TWI238123B

TWI238123B - Ballpoint pen tip and ballpoint pen

Info

Publication number: TWI238123B
Application number: TW91136380A
Authority: TW
Inventors: Akira Kitao; Hiroyuki Muto
Original assignee: Mitsubishi Pencil Co
Priority date: 2001-12-18
Filing date: 2002-12-17
Publication date: 2005-08-21
Also published as: TW200301197A; CN1274518C; CN1448279A

Abstract

A ballpoint pen tip using a ball with a diameter smaller than 0.3 mm, in which an amount of ball-sinking is made to be as small as possible and ball-dropping is made to occur hardly. Either in a ballpoint pen tip 10 comprising a holder 20 with inward protrusions 22 formed by a plurality of adjacent positions to an end of a fine metal tube, every one of which locates at an equal distance from an end of a fine metal tube and is adjacent to the end, being so pressed and deformed inwardly that the inward protrusions 22 may have an inscribed circle with a diameter of F (mm), and a ball 30 with a diameter (D) smaller than 0.3 mm supported by the inward protrusions 22; or in a ballpoint pen tip comprising a ball house 23 formed by an inner space of an end of a columnar material being curved, an ink-inducting hole 27 formed to penetrate from another end of the columnar material to an adjacent position to the ball house 2, an ink-flowing hole 28 with a diameter of F (mm) formed to penetrate between the ball house 23 and the ink-inducting hole 21, and the ball 30 with a diameter (D) smaller than 0.3 mm inserted into the ball house 23; a following relationship is fulfilled; 0.4 <= F/D <= 0.6.

Description

1238123 玖、發明說明 (發明說明應敘明：發明所属之技術領域、先前技術、内容、實施方式及圖式簡單說明） C發明所屬^_技領域】發明所屬之技術領域本發明係有關於一種圓珠筆筆尖與圓珠筆，該圓珠筆 5筆尖係使用圓珠直徑小於〇.3mm之小直徑圓珠，特別係有關於一種具有圓珠直徑〇.29mm以下之圓珠者，又，前述圓珠筆係具有使用金屬細管而形成之圓珠筆筆尖之形狀及該圓珠筆筆尖，且，本發明係與切削圓柱材而形成之圓珠筆筆尖之形狀有關。 10 【】習知技術以在有各種將金屬細管加工成固持座之圓珠筆筆尖。如此之圓珠筆筆尖，係將使該金屬細管前端附近之多處朝内方按壓變形而形成之内方突起作為圓珠之承接座。 15且，將圓珠***承接座，並使該金屬細管前端朝内方按壓變形而形成歛合部。並且藉該承接座與歛合部包圍支撐圓珠’使其不脫洛且可自由旋轉。又，該金屬細管之材質，一般係使用鎳含量7乃至9 重量％之SUS304。進而，為了使該金屬細管之塑性加工性 20良好，實施退火處理使維氏硬度降低至180乃至2〇〇左右後供固持座加工。又，以往有各種切削圓柱材料以加工成固持座之圓珠筆筆尖。如此之圓珠筆筆尖，係將該圓柱材料前端附近之外周 1238123 玖、發明說明切削成頊細之錐部，並且切削其内周而形成圓珠室。另外 ’將由該圓柱材料後端穿孔至該圓珠室附近以形成墨水引導孔，亚利用貫通該圓珠室底面與該墨水引導孔來設置流通孔且朝向後端且諸如放射狀地對該圓珠室底面進行 5切槽加工來形成墨水引導溝，並以殘留之底面作為承接座。然後，朝該圓珠室插人圓珠，並使前述錐部之前端朝内方按壓變形而形成歛合部。即，藉該承接座與歛合部包圍支撐圓珠以使其不脫落並可自由旋轉。且，使用圓珠直徑小於0e3mm之小直徑圓珠之圓珠筆 1〇筆尖，尤其當圓珠直徑係〇.29mm以下者時，一旦隨著圓珠直徑縮小，連接墨水流通孔之墨水引導孔直徑亦隨著縮 J則墨水會無法順暢地供給，而發生字模糊不清或線條斷掉等現象。尤其，使用有考慮對直流性能黏度之假塑性水性墨水或低黏度油性墨水之圓珠筆明顯有此傾向。 15 發明欲解決之課題對於圓珠筆筆尖而言，應該避免之特性之一係所謂「圓珠沉陷」。於此，所謂圓珠沉陷，係指承接座因旋轉之圓珠與承接座之間產生摩擦而漸漸磨損，即所謂圓珠旋轉空隙增大之現象。該圓珠沉陷嚴重時，圓珠與固持座前端口緣之開口部之間之間隙增大。因此，墨水之供給量增多，成為所謂「墨水外漏」之原因。由於使用有金屬細管之圓珠筆筆尖中，承接座係藉由如鈉述之内方突起形成，因此與圓珠之接觸面積小。故，因磨損造成之圓珠沉陷之問題很嚴重。 1238123 玫、發明說明尤其，使用圓珠直徑不足0.3mm之小直徑圓珠之圓珠筆筆尖，特別係圓珠直徑0.29mm以下者容易發生圓珠沉陷之問題，其對策成為重要之課題。然而，若單純使承接座與在承接座中之圓珠之接觸面 5積增大時，因内方突起之按壓變形而變形之變形量不得不增大。因此，收容圓珠之空間的圓珠室變形，又，内方突起容易破裂。 10 15 口此，本發明第1課題係於使用小直徑圓珠之圓珠筆筆尖中，藉使内方突起之形成所需之變形量恰當，以儘可能地使圓珠沉陷問題減輕。又，對圓珠筆筆尖而言，必需儘可能地抑制書寫時圓珠前端部與紙面之摩擦。另外，《了防止圓珠由固持座前端部跳脫’亦必需使㈣合部進行之固持確實。使用有圓珠直捏不足〇.3mm(尤其直徑〇·29以下）之小直徑圓珠之圓珠筆筆尖，與使用有大直徑圓珠者相比，圓 ^由固持座突出之突出尺寸較小。，於書寫時固持座前端部容易與紙面接觸，故，不好進行書寫，且會有因固持座前端部磨損而造成圓珠跳脫之問題。此外，使用有圓珠直徑小於Q.3mm(尤其直徑為〇^29mm以下）之小直徑圓珠之圓珠筆筆尖，與使用大直徑圓珠者相比，歛合部前端口緣部之内徑較小，因此，歛合部所實施之固持力不得不較小。因此，本發明笛 q _ 課題係藉於使用小直徑圓珠之圓珠筆筆尖中，使歛合部 ^ y成所需之變形量恰當，而有效地 20 1238123 玖、發明說明防止圓珠跳脫。進而，本發明第3課題係提供一種圓珠筆筆尖，且係藉於該使用小直徑圓珠之圓珠筆筆尖中，使内方突起之形成所需之變形量恰當，並使歛合部之形成所需之變形量恰 5當，而盡可能地使圓珠沉陷程度減輕且不易發生圓珠跳脫〇又，如前述，利用藉退火使金屬細管之硬度降低，而使金屬細管之塑性加工性良好。然而，於使用小直徑圓珠之圓珠筆筆尖中，固持座之直徑亦按照其縮小，因此，因 10硬度降低而容易造成彎曲，且，亦又容易發生前述圓珠沉陷之問題。然而，為了避免硬度降低，僅單單省略退火步驟時，因塑性加工性不良而於内方突起形成時容易發生龜裂。即，該等缺點若不經仔細調查金屬細管之材質而挑選優良者係無法解決的。 15 因此，本發明第4課題係於使用小直徑圓珠，且以内方突起固持其圓珠之圓珠筆筆尖中，解決因金屬細管之材質引起之彎曲或圓珠沉陷之問題。進而，本發明第5課題係提供一種可實現順暢書寫感之圓珠筆，該圓珠筆具有一種圓珠筆筆尖，且係藉於該使 2〇用小直徑圓珠之圓珠筆筆尖中，使内方突起之形成所需之又形里恰當，並使歛合部之形成所需之變形量恰當，而儘可能地使圓珠沉陷程度減輕且不易發生圓珠跳脫者。又，本發明第6課題係提供一種圓珠筆，其係除了前述第5課題之外，利用限定使用之墨水而實現更順暢之書 1238123 玖、發明說明寫感者。 5 10 另外’為了解決與切削圓柱材而製造之圓珠筆筆尖有狀前述問題，而加A墨水引導孔時，會干擾固持座之部部。為了避免該問題’亦有將墨水引導孔之與墨水流通孔連接之連接部份縮短之方法，然而，相對地墨水流通孔增長，因而對墨水之供給造成阻礙。1238123 发明 Description of the invention (The description of the invention should state: the technical field to which the invention belongs, the prior art, the content, the embodiments, and the drawings briefly) C. The technical field to which the invention belongs] The technical field to which the invention belongs The present invention relates to a Ballpoint pen tip and ballpoint pen, the ballpoint pen 5 tip is a small diameter ball with a ball diameter of less than 0.3mm, especially a ball with a ball diameter of 0.39mm or less, and the aforementioned ballpoint pen has a metal The shape of a ballpoint pen tip formed by a thin tube and the ballpoint pen tip, and the present invention relates to the shape of a ballpoint pen tip formed by cutting a cylindrical material. 10 [] Know-how There are various ballpoint pen tips for processing metal thin tubes into holders. Such a ballpoint pen nib uses the inner protrusion formed by pressing and deforming a plurality of places near the front end of the thin metal tube inward as a socket for the ball. 15 Then, insert the ball into the receiving seat, and press and deform the front end of the thin metal tube to form a convergent portion. And the support ball is surrounded by the receiving seat and the convergence portion so that it cannot be lifted off and can rotate freely. In addition, the material of the metal thin tube is generally SUS304 having a nickel content of 7 to 9% by weight. Furthermore, in order to improve the plastic workability 20 of the thin metal tube, an annealing treatment is performed to reduce the Vickers hardness to about 180 to 200, and then the holder is processed. In addition, conventionally, various cylindrical materials have been cut to be processed into ballpoint pen nibs. Such a ballpoint pen tip is formed by cutting the outer periphery of the cylindrical material near the front end of the cylindrical material into a thin tapered portion and cutting the inner periphery to form a ball chamber. In addition, 'the rear end of the cylindrical material is perforated to the vicinity of the bead chamber to form an ink guide hole, and a circulation hole is provided through the bottom surface of the bead chamber and the ink guide hole, and the circle is directed toward the rear end, such as radially. The bottom surface of the bead chamber is grooved to form an ink guide groove, and the remaining bottom surface is used as a receiving seat. Then, a bead is inserted into the bead chamber, and the front end of the tapered portion is pressed and deformed inward to form a convergent portion. That is, the supporting ball is surrounded by the receiving seat and the convergence portion so as not to fall off and can rotate freely. In addition, the tip of a ballpoint pen with a small diameter of less than 0e3mm and a ballpoint pen of 10 is used, especially when the ball diameter is less than 0.29mm. Once the diameter of the ball is reduced, the diameter of the ink guide hole connected to the ink circulation hole is also With the shrinkage of J, the ink cannot be smoothly supplied, and the phenomenon of blurred characters or broken lines occurs. In particular, ball-point pens using pseudoplastic water-based inks or low-viscosity oil-based inks that consider DC performance viscosity are clearly inclined. 15 Problems to be Solved by the Invention One of the characteristics that a ballpoint pen tip should avoid is the so-called "ball sinking". Here, the so-called ball subsidence refers to the fact that the socket gradually wears out due to the friction between the rotating ball and the socket, which is the phenomenon that the gap of the ball rotation increases. When the ball sinks severely, the gap between the ball and the opening at the front port edge of the holder increases. Therefore, the supply amount of ink increases, which is a cause of the so-called "ink leakage." Since the tip of a ball-point pen with a thin metal tube is used, the socket is formed by an inner protrusion as described in sodium, so the contact area with the ball is small. Therefore, the problem of bead sinking due to wear is very serious. 1238123 Rose and description of the invention In particular, the use of a ballpoint pen tip with a small-diameter ball having a ball diameter of less than 0.3mm, especially if the ball diameter is less than 0.29mm, the problem of ball sinking is prone to occur, and its countermeasures have become important issues. However, if the product of the contact surface 5 between the receiving seat and the ball in the receiving seat is simply increased, the deformation amount due to the pressing deformation of the inner protrusion has to be increased. Therefore, the bead chamber in the space for accommodating the beads is deformed, and the inner protrusion is easily broken. 10 15 In this regard, the first problem of the present invention is to reduce the problem of ball subsidence as much as possible by using the proper amount of deformation required to form the inner protrusions in the tip of a ball-point pen using a small-diameter ball. In addition, it is necessary for the ballpoint pen tip to minimize the friction between the tip of the ball and the paper surface during writing. In addition, "In order to prevent the ball from leaping from the front end of the holding seat ', it is necessary to ensure the holding of the coupling portion. When using a ballpoint pen tip with a small ball diameter of less than 0.3mm (especially a diameter of less than 29.29), the size of the projection protruding from the holder is smaller than that of a ball with a large diameter ball. During writing, the front end of the holding base is easy to contact the paper surface, so it is not easy to write, and there is a problem that the ball is detached due to the wear of the front end of the holding base. In addition, using a ballpoint pen tip with a small-diameter ball with a ball diameter smaller than Q.3mm (especially a diameter of less than 0 ^ 29mm), the inner diameter of the front port edge of the convergence portion is smaller than that of a large-diameter ball. Small, therefore, the holding force applied by the convergence portion has to be small. Therefore, the subject of the flute q _ of the present invention is to effectively prevent the ball from jumping off by using the tip of a ball-point pen with a small diameter to make the deformation amount required for the convergence portion ^ y appropriate. Furthermore, the third object of the present invention is to provide a ballpoint pen nib, and by using the ballpoint pen nib with a small diameter ball, the amount of deformation required for the formation of the inner protrusion is appropriate, and the formation of the convergence portion is required. The amount of deformation is just 5 to reduce the degree of sinking of the beads as much as possible and prevent the ball from falling off. As mentioned above, the hardness of the metal thin tube is reduced by annealing, so that the plastic workability of the metal thin tube is good. However, in the ballpoint pen tip using a small-diameter ball, the diameter of the holder is also reduced in accordance with it. Therefore, it is easy to cause bending due to a decrease in hardness, and the problem of sinking the ball is also easy to occur. However, in order to avoid a decrease in hardness, when the annealing step is omitted alone, cracks are liable to occur when the inner protrusions are formed due to poor plastic workability. That is, these disadvantages cannot be resolved without careful investigation of the material of the metal thin tube. 15 Therefore, the fourth problem of the present invention is to solve the problem of bending or ball sinking caused by the material of a thin metal tube in a ballpoint pen tip using a small diameter ball and holding the ball with an inner protrusion. Furthermore, the fifth subject of the present invention is to provide a ball-point pen which can realize a smooth writing feeling. The ball-point pen has a ball-point pen tip, and is formed by using a ball-point pen tip with a small diameter of 20 balls to form an inner protrusion. Those who need to be appropriate and appropriate, and make the amount of deformation required to form the convergence part is appropriate, and as far as possible to reduce the degree of ball subsidence and the ball is not easy to escape. In addition, the sixth subject of the present invention is to provide a ball-point pen, which is a book that realizes smoother use of limited-use ink in addition to the fifth subject described above. 1238123 发明, description of the invention. 5 10 In addition, a ballpoint pen tip manufactured to cut a cylindrical material has the aforementioned problems, and when the A ink guide hole is added, it may interfere with the portion of the holder. In order to avoid this problem, there is also a method of shortening the connection portion between the ink guide hole and the ink flow hole. However, the ink flow hole is relatively long, which hinders the supply of ink.

進而’為了解決前述問題’而有於墨水引導孔與墨水流通孔之連接部設置錐狀之直徑縮小部之方法，然而，普通之圓珠筆筆尖之外形錐角度係30度左右，使前述連接部之錐角度增大時，@持鋒部之層厚減少，於以切槽加工形成墨水引導孔等時，會因薄層部之拙曲發生加工不良。另外，使前述連接部之錐角度減小時，必然會使墨水引導孔與墨水流通孔之距離增長，因此，會容易對墨水之供給造成阻礙，且，高速書寫性不佳。Further, in order to solve the aforementioned problem, there is a method of providing a tapered diameter reduction portion at the connection portion between the ink guide hole and the ink circulation hole. However, the angle of the outer cone of the conventional ballpoint pen tip is about 30 degrees, which makes the connection portion When the taper angle is increased, the layer thickness of @ 持锋部 is reduced. When the ink guide hole is formed by grooving, processing defects may occur due to the slackness of the thin layer portion. In addition, when the taper angle of the connecting portion is reduced, the distance between the ink guide hole and the ink circulation hole is necessarily increased, and therefore, the supply of ink is likely to be hindered, and the high-speed writing performance is not good.

口此本發明第7課題係提供一種圓珠筆筆尖，其係用以解決前述問題，且即使係具有圓珠直徑小於〇.3麵之小直徑圓珠，尤其0 29mm以下之圓珠之圓珠筆筆尖，亦具有優良鬲速書寫性，且容易加工。又，對圓珠筆筆尖而言，應該避免之特性之一，係所 20明圓珠〉儿陷」之問題。於此，所謂圓珠沉陷係指承接座因旋轉之圓珠與承接座之間產生之摩擦而漸漸磨損，圓珠由歛合部前端突出之尺寸減少之現象。該圓珠沉陷嚴重時，圓珠會堵塞墨水引導孔，妨礙墨水流出，而無法書寫。又，圓珠突出尺寸減少時。於書寫時歛合部容易比圓珠先 10 1238123 玖、發明說明碰觸紙面，因此，損害書寫之滑順度。尤其，使用圓珠直徑小於0.3mm之小直徑圓珠，特另】係圓珠直徑0.29mm以下之圓珠之圓珠筆筆失，與使用車六大直徑之圓珠之圓珠筆筆尖相比，圓珠與固持座之摩擦速 5度不’憂’然而由於圓珠之接觸面積較小，所以接觸部份之磨損車父強烈’其結果為，容易發生圓珠沉陷，其解決方去成為重要之課題。然而，單純使承接座與位於其中之圓珠之接觸面積增大時，藉内方突起之按壓變形而變形之變形量不得不增大 10 。因此，使圓珠與固持座之接觸面積增加時，勢必不得不使墨水流通孔與墨水引導溝縮小，因而發生高速書寫時黑水供給不足之缺點。因此，本發明第8課題係於使用小直徑圓珠之圓珠筆筆尖中，藉使用以形成墨水流通孔之切削量為恰當，而儘 15可能地使圓珠沉陷狀況減輕且確保充足之墨水供給。又，於圓珠筆筆尖中，必需儘可能地抑制於書寫時之固持座前端部與紙面之摩擦，再者，為了防止圓珠自固持座前端跳脫，亦必需使藉歛合部所施行之固持確實。使用有圓珠直徑小於〇.3mm(尤其直徑小於〇 29叫之 2〇小直徑圓珠之圓珠筆筆尖，與使用大直徑圓珠者相比，圓珠由固持座突出之尺寸較小。因此，於書寫時固持座前端部易與紙面接觸，所以經常不好書寫，且會有因固持座前端之磨損而造成圓珠跳脫之問題。此外，使用有圓珠直徑小於〇.3mm(尤其直徑小於 1238123 玖、發明說明〇.29mm)之小直徑圓珠之圓珠筆筆尖，與使用大直徑圓珠者相比，藉歛合部固持圓珠之尺寸較小，因此，藉歛合部亍之固持力不得不較小。因此，又加上前述磨損之問題 . 而容易發生圓珠跳脫。 k 5 因此，本發明第9課題係於使用小直徑圓珠之圓珠筆筆尖中，使歛合部之形成所需之變形量恰當，而有效地防止圓珠跳脫之問題。進而本發明苐10課題係提供一種圓珠筆筆尖，其係於使用小直徑圓珠之圓珠筆筆尖中，利用使用以形成墨水 1〇流通孔之切削量為恰當，並使形成歛合部所需之變形量為恰當，而儘可能地使圓珠沉陷狀況減輕且確保充足之墨水供給，又，不易發生圓珠跳脫。【發明内容】解決課題之手段 15 為了達成前述目的，本發明係如以下之結構。此外’標號係表示於發明實施形態中使用之標號，並 φ 非限定本發明技術範圍者。 (第1發明） « 蓉於則述第1課題，本發明中第1發明之圓珠筆筆尖 ^ 有固持座2〇與圓珠3〇，前述固持座2〇係於金屬細 ^ ^之附近部，將距離該一端等距之多處朝内方按壓變 =形成有内方突起22者，前述圓珠30則為***前述内方突起與前述一端間之直徑小於〇 3咖，且最好係 0.9 以如- 者，且，藉將前述一端之邊緣朝内方歛合加工 12 1238123 玖、發明說明㈣成有歛合部21，又，使前述圓珠3G之直徑為〇及使前述内方突起22之内接圓之直徑為F時’滿足以謂d $ 0.6之關係。弟1發明中之金屬細管之材質，宜為沃斯田鐵系不錄鋼。尤其，其碳含量宜為〇.〇3%以下（例如susm6l等卜 ★又’圓珠30之材質宜諸如為超硬合金、獨鋼、陶竟等。内方犬起22之形成’舉例而言，可使用前端為球狀之拍擊工具來進行。又，内方突起22之個數宜為3個。 10 歛合加工’舉例來說，可以使用輥之旋轉加工來進行〇 15 依前述，於收容直徑小於0.3_、宜為〇 29mm以下之圓珠30之金屬細管製之圓珠筆筆尖1〇中利用使内方大起22之形成所需之變形量為恰當，可防止因加工影塑造成圓珠室23變形或内方突起。破裂，並且不易發生圓珠沉陷。 (第2發明） 20 鑒於別述第2課題，本發明中第2發明之圓珠筆筆尖 1〇 ’係包含有固持座20與圓珠3〇,前述固持座20係於金屬細管一端之附近部，將距離該一端等距之多處朝内方按壓又开V而形成有内方突起22者，前述圓珠則為***前述内方突起22與前述一端間之直徑小於〇.3麵，且最好係㈣麵以下者，且，藉將前述一端之邊緣朝内方歛合加工而开y成有歛σ 一 21 ’又，使前述圓珠3〇之直徑為d及使 13 1238123 玖、發明說明該圓珠30之由前述歛合部21前端突出之突出尺寸為g且使該歛合部21之内徑為η時，滿足G/D-0.25且 0.005mmSD — H^O.OlOmm 之關係。第2發明中之金屬細管及圓珠30之材質，及内方突起 5 22之形成與歛合加工係與前述第1發明相同。依前述，於收容直徑小於〇.3mm、宜為〇.29mm以下之圓珠30之金屬細管製之圓珠筆筆尖1〇中，利用使歛合部21形成所需之變形量為恰當，而有效地防止書寫時之阻礙與圓珠跳脫。 10 (第3發明）鑑於前述第3發明，本發明中第3發明之圓珠筆筆尖 10 ’包含有固持座20與圓珠30，前述固持座20係於金屬細管一端之附近部，將距離該一端等距之多處朝内方按壓變形而形成有内方突起22者，前述圓珠30則為***前述 15内方突起22與前述一端間之直徑小於0 3mm，且最好係〇.29mm以下者，且，藉將前述一端之邊緣朝内方歛合加工而形成有歛合部21，又，使前述圓珠30之直徑為D及使前述内方突起22之内接圓之直徑F，且使前述圓珠3〇之由前述歛合部21前端突出之突出尺寸為G且使該歛合部 20 21之内徑為η時，滿足0.4SF/D$0.6且G/D20.25及〇〇〇5mm$D — H$ 0.010mm 之關係。第3發明中之金屬細管及圓珠3〇之材質，及内方突起 22之形成與歛合加工係與前述第1發明相同。依前述，於收容直控小於〇.3mm、宜為〇.29mm以下 1238123 玖、發明說明之圓珠3G之金屬細管製之圓珠筆筆尖1()中，利用使内方突起22及歛合部21形成所需之變形量為恰當，而防止加工之影響造成圓珠室23變形或内方突起22破裂，且不易毛生圓珠/儿(½ ’並且同時有效地防止書寫時之阻礙或圓珠 5 跳脫。，此外，由前述第i發明至前述第3發明之各個發明中 ’前述金屬細管宜以鎳含量1〇重量%以上，且，维氏硬度 350以上之不錄鋼形成。藉此，可解決因金屬細管之材質造成之彎曲或圓珠沉陷。進而，該不錄鋼宜為碳含量_ 10重里％以下之沃斯田鐵系不錄鋼。藉此，即使圓珠與圓珠承接座產生摩擦熱，亦不易形成鉻之碳化物，因此，提昇而十磨損f生’其結果為不易發生圓珠沉陷。 (第4發明） ^於别述第4發明，本發明中第4發明之圓珠筆筆尖 15 10 & a有固持座與圓珠，前述固持座係於金屬細管一端之附k P將距離泫一端等距之多處朝内方按壓變形而形成有内方突起者’前述圓珠則為***前述内方突起與前述一端間之直控小於0.3mm ’且最好係0.29mm以下者，且 ’藉將前述—端之邊緣朝时歛合加U形成有歛合部， 20 又，前述金屬細管你自人曰1 a丄θ &係以鎳含夏10重量％以上，且，維氏硬度350以上之不銹鋼形成。第4發明中之金屬細管及圓珠30之材質，及内方突起 22之形成與歛合加卫係與前述第i發明相同。、’、里〇重里％以上之不銹鋼，可舉例有沃斯田鐵系 15 1238123 @、發明說明不鑄鋼中之 SUS316、SUS316L、SUS3〇5 等。細总即，利用使圓珠筆筆尖以前述硬度之不銹鋼製之金屬細官形成，可解決彎曲與圓珠沉陷之問題。另外，由於前述不銹鋼為鎳含量10重量％以上，因此，與小於重量％者相比係較富延性，因而於内方突起形成時不發生龜裂。此外，前述不銹鋼宜為碳含量0 03重量％以下之沃斯田鐵系不銹鋼。藉此，即使圓珠與圓珠承接座產生摩擦熱亦不會形成鉻之碳化物，因此，提昇耐磨損性，其結果為不易發生圓珠沉陷。 10 (第5發明）鑑於前述第5課題，本發明中第5發明之圓珠筆4〇亦有種圓珠筆筆尖，該圓珠筆筆尖包含有用以收容墨水之收容管44、固持座20與圓珠3〇 ,前述固持座2〇係於金屬細管一端之附近部，將距離該一端等距之多處朝内方按 15 I叆形而形成有内方突起22者，前述圓珠30則為***前述内方突起22與前述一端間之直徑小於〇·3ιηιη，且最好係 0.29mm以下者’且藉將前述一端之邊緣朝内方歛合加工而形成有歛合部21，又，使前述圓珠30之直徑為D及使前述内方突起之22之内接圓之直徑為F，並使前述圓珠30 20 之由前述歛合部21前端突出之突出尺寸為G且使該歛合部21之内徑為η時，滿足〇.4$F/D$0.6，G/D-0.25且〇.〇〇5mm$D — H$0.010mm 之關係。依gil述’於收容直徑小於〇.3nim、宜為0.29mm以下之圓珠30之金屬細管製之圓珠筆筆尖1〇之圓珠筆4〇中， 16 1238123 玖、發明說明形成所需之變形量恰當， 23變形與内方突起22之並且同時可有效地防止書寫利用使内方突起22及歛合部21 而防止因加工之影響造成圓珠室破裂’且不易發生圓珠沉陷，並時之阻礙與圓珠跳脫，其結果為可實現暢快之書寫感 (第6發明） ’於與本發明中第6發明有關之圓The seventh subject of the present invention is to provide a ballpoint pen nib, which is used to solve the aforementioned problem, and even if it is a small-diameter ball with a ball diameter smaller than 0.3, especially a ballpoint pen tip with a diameter of 0 to 29mm, It also has excellent fast writing performance and is easy to process. In addition, for the ballpoint pen tip, one of the characteristics that should be avoided is the problem of “20 Mingyuan Balls”. Here, the so-called ball subsidence refers to the phenomenon that the socket gradually wears out due to the friction between the rotating ball and the socket, and the size of the ball protruding from the front end of the convergence portion decreases. When the ball sinks heavily, the ball will block the ink guide hole, prevent the ink from flowing out, and make writing impossible. When the size of the ball protrusion is reduced. When writing, the convergence part is easier than the ball. 10 1238123 发明, description of the invention Touch the paper surface, therefore, the smoothness of writing is impaired. In particular, the use of small-diameter ball with a ball diameter less than 0.3mm, especially] Ball-point pens with a ball diameter of 0.29mm or less are lost, compared with the ballpoint pen tip with six large-diameter ball-point pens. The friction speed with the retaining seat is 5 degrees. It is not 'worrying'. However, because the contact area of the ball is small, the wearer of the contact part is strongly 'resulting in it. As a result, the ball sinks easily, and its solution becomes an important issue. . However, when simply increasing the contact area between the receiving seat and the ball located therein, the deformation amount due to the pressing deformation of the inner protrusion has to be increased by 10%. Therefore, when the contact area between the ball and the holder is increased, the ink circulation hole and the ink guide groove will inevitably be reduced, so that the black water supply is insufficient during high-speed writing. Therefore, the eighth subject of the present invention is to use a small-diameter ballpoint pen tip, and by using the cutting amount for forming the ink circulation hole as appropriate, it is possible to reduce the ball sinking condition and ensure sufficient ink supply. In addition, in the ballpoint pen tip, it is necessary to suppress the friction between the front end portion of the holder and the paper surface as much as possible when writing. Furthermore, in order to prevent the ball from escaping from the front end of the holder, it is also necessary to hold the holding portion by the convergence portion. indeed. Use a ballpoint pen tip with a ball diameter of less than 0.3mm (especially a diameter of less than 〇29 and a diameter of 20 small diameter balls). Compared with a large diameter ball, the size of the ball protruding from the holder is smaller. Therefore, When writing, the front end of the holder is prone to contact with the paper surface, so it is often difficult to write, and there will be problems of ball jumping due to the wear of the front of the holder. In addition, the diameter of the ball is less than 0.3mm (especially the diameter The ballpoint pen tip of a small diameter ball smaller than 1238123 (introduction of the invention, 0.29mm) has a smaller size than the one using a large diameter ball to hold the ball. Therefore, The force has to be small. Therefore, the problem of abrasion mentioned above is added, and ball jumping is easy to occur. K 5 Therefore, the ninth problem of the present invention is to use a ballpoint pen tip with a small diameter ball to make the convergence part The amount of deformation required for the formation is appropriate, and the problem of ball jumping is effectively prevented. Furthermore, the subject of the present invention is to provide a ballpoint pen tip, which is used in a ballpoint pen tip using a small diameter ball, and is used to form The cut amount of the ink 10 flow hole is appropriate, and the amount of deformation required to form the convergence portion is appropriate, so as to reduce the sinking of the ball as much as possible and ensure sufficient ink supply, and it is not easy for the ball to escape [Summary of the Invention] Means for Solving the Problem 15 In order to achieve the foregoing object, the present invention has the following structure. In addition, the reference numerals are used in the embodiments of the invention, and φ does not limit the technical scope of the present invention. (No. 1 Invention) «Rong Yuzhe describes the first problem. The ballpoint pen tip of the first invention in the present invention has a holder 20 and a ball 30. The holder 20 is located near the metal thinner ^ ^ One end is pressed inward at a plurality of equidistant positions = the inner protrusion 22 is formed, and the ball 30 is inserted between the inner protrusion and the one end and the diameter is less than 0.33, and it is preferably 0.9 to be- In addition, by converging the edge of the one end inward 12 1238123, the invention description is formed with a converging portion 21, and the diameter of the ball 3G is 0 and the inner protrusion 22 is inside. When the diameter of the circle is F ' It is enough to refer to the relationship of d $ 0.6. The material of the metal thin tube in the invention of Di 1 should be Vostian iron-based non-recording steel. In particular, its carbon content should be less than 0.03% (for example, susm6l and so on. The material of the ball 30 is preferably such as cemented carbide, single steel, pottery, etc. The formation of the inner dog 22 can be performed by using, for example, a tapping tool with a spherical tip. Also, the inner protrusion 22 The number should be 3. 10 Convergence processing 'For example, the rotation processing of the roller can be used to perform the 〇15 According to the foregoing, the metal fine control of the ball 30 containing a diameter of less than 0.3_, preferably 〇29mm or less In the ballpoint pen tip 10, the amount of deformation required to form the inner big rise 22 is appropriate, which can prevent the ball chamber 23 from being deformed or protruded from the inner side due to the processing shadow. Ruptured and less likely to sink. (Second invention) 20 In view of the second problem described above, the ballpoint pen tip 10 'of the second invention of the present invention includes a holder 20 and a ball 30, and the holder 20 is located near one end of a thin metal tube. The inner protrusions 22 are formed by pressing inwardly at a plurality of places equidistant from the one end to form an inner protrusion 22, and the ball is inserted between the inner protrusion 22 and the one end with a diameter smaller than 0.3, and the most It is better for those below the noodle surface, and by converging the edge of the aforementioned one end inward to process y into a convergent σ a 21 ′, so that the diameter of the aforementioned ball 30 is d and 13 1238123 It is explained that when the protruding size of the ball 30 protruding from the front end of the convergence portion 21 is g and the inner diameter of the convergence portion 21 is η, the relationship of G / D-0.25 and 0.005mmSD — H ^ O.OlOmm is satisfied. . The material of the thin metal tube and the beads 30 in the second invention, and the formation and convergence processing of the inner protrusions 5 and 22 are the same as those of the first invention. According to the foregoing, in the ballpoint pen tip 10 of the metal fine-regulated ball-point pen 10 containing the ball 30 smaller than 0.3 mm and preferably 0.29 mm or less, the amount of deformation required to form the convergence portion 21 is appropriate and effectively Prevents obstructions and ball-jumping when writing. 10 (Third invention) In view of the third invention, the ballpoint pen tip 10 'of the third invention of the present invention includes a holder 20 and a ball 30, and the holder 20 is located near one end of the thin metal tube, and is distanced from the one end. The inner protrusions 22 are formed by pressing and deforming at a plurality of equidistant positions inward. The diameter of the ball 30 is inserted between the inner protrusion 22 of the 15 and the one end. The diameter is less than 0.3 mm, and preferably less than 0.29 mm. Further, the convergence portion 21 is formed by converging the edge of the one end inward, and the diameter of the ball 30 is D and the diameter F of the circle inscribed in the inner protrusion 22 is formed. When the protruding size of the ball 30 from the front end of the convergence portion 21 is G and the inner diameter of the convergence portion 20 21 is η, 0.4SF / D $ 0.6 and G / D20.25 and 〇 are satisfied. 〇〇5mm $ D — H $ 0.010mm relationship. The material of the thin metal tube and the bead 30 in the third invention, and the formation and convergence processing of the inner protrusion 22 are the same as those in the first invention. In accordance with the foregoing, in the ballpoint pen tip 1 () of the direct control containing less than 0.3mm, preferably 0.229mm or less, preferably 0.39mm, the ball-point pen 3G of the invention described in detail, the inner protrusion 22 and the convergence portion 21 are used. The amount of deformation required for the formation is appropriate, to prevent deformation of the bead chamber 23 or breakage of the inner protrusions 22 due to the effects of processing, and it is not easy to hairy balls / babies (½ ') and at the same time effectively prevent obstructions or beads during writing 5 In addition, in each of the foregoing inventions from the i-th invention to the third invention, the aforementioned metal thin tube is preferably formed of non-recorded steel having a nickel content of 10% by weight or more and a Vickers hardness of 350 or more. It can solve the bending or bead subsidence caused by the material of the metal thin tube. Furthermore, the non-recording steel should be a non-recording steel with a carbon content of less than 10% by weight. The socket generates frictional heat, and it is not easy to form chromium carbides. Therefore, lifting and abrasion will result in hardly bead sinking. (Fourth invention) ^ In addition to the fourth invention, the fourth invention Invention Ballpoint Pen Tip 15 10 & a Holder And ball, the aforementioned retaining seat is attached to one end of the thin metal tube, and k P is pressed and deformed inwardly at a plurality of equidistant distances from one end to form an inner protrusion. 'The aforementioned ball is inserted into the inner protrusion and the aforementioned. The direct control between one end is less than 0.3mm ', and it is preferably 0.29mm or less, and the convergence end is formed by converging the aforementioned edge of the end toward the time and adding U. 20 Also, the aforementioned metal thin tube is 1 a 丄 θ & is formed of stainless steel with nickel containing 10% by weight or more and having a Vickers hardness of 350 or more. The material of the metal thin tube and the ball 30 in the fourth invention, and the formation and convergence of the inner protrusion 22 The Jiawei system is the same as the i-th invention mentioned above. For example, stainless steel with a weight of more than 5% by weight, such as Vostian Iron System 15 1238123 @, invention description SUS316, SUS316L, SUS305 in uncast steel, etc. In other words, the ballpoint pen tip is formed by thin metal parts made of stainless steel with the aforementioned hardness, which can solve the problems of bending and ball sinking. In addition, the aforementioned stainless steel has a nickel content of 10% by weight or more. More ductile than No cracking occurs when the inner protrusion is formed. In addition, the aforementioned stainless steel should preferably be a Wastian iron-based stainless steel with a carbon content of 0 03% by weight or less. Therefore, even if frictional heat is generated between the ball and the ball bearing seat, As chromium carbides are formed, wear resistance is improved, and as a result, ball sinking is less likely to occur. 10 (Fifth Invention) In view of the aforementioned fifth problem, the ballpoint pen 40 of the fifth invention of the present invention also has a ballpoint pen tip. The ballpoint pen tip contains a containing tube 44 for holding ink, a holder 20 and a ball 30. The holder 20 is located near one end of a thin metal tube, and a plurality of equidistant distances from the end are pressed inward. 15 I-shaped and formed with an inner protrusion 22, the ball 30 is inserted between the inner protrusion 22 and the one end of the diameter is less than 0.3 mm, and preferably 0.29 mm or less, and by the aforementioned end Converging portions 21 are formed with the edges facing inward, and the diameter of the ball 30 is D, and the diameter of the inscribed circle of the inner protrusion 22 is F, and the ball 30 is formed. 20 of which protrudes from the front end of the aforementioned convergence portion 21 When the protruding size is G and the inner diameter of the convergence portion 21 is η, the relationship of 0.4 $ F / D $ 0.6, G / D-0.25 and 0.0005mm $ D—H $ 0.010mm is satisfied. According to Gil's, in the ball-point pen 40, the ball-point pen tip 10 of the metal fine-regulated ball-point pen tip 10 containing a ball diameter less than 0.3 nm, preferably 0.29 mm or less, 16 1238123 玖, the amount of deformation required to form the description of the invention is appropriate, 23 deformation and inner protrusions 22 can effectively prevent writing at the same time by using the inner protrusions 22 and the convergence portion 21 to prevent the ball chamber from rupturing due to the influence of processing ', and it is not easy for the ball to sink, and the current obstacles and obstacles The ball jumps off, and as a result, a smooth writing feeling can be achieved (sixth invention) 'The circle related to the sixth invention of the present invention

鑒於前述第6課題，於此，所謂「水性墨水」，係意指以水為基本材料，且於其中有增黏成分或著色成分等散布之墨水。依前述，與第6發明有關之圓珠筆4〇所具有之圓珠筆 15筆尖1〇,係適用具有前述物性之所謂假塑性水性墨水。進而，收容有如此之假塑性水性墨水之圓珠筆4〇之書寫感係更加順暢。 (第7發明）鑒於前述第7課題，本發明中第7發明之圓珠筆筆尖 20 ，包含有圓珠30、用以固持圓珠30之固持座20，前述固持座20具有圓珠室23與墨水孔40A，前述圓珠室23係用以於一端收納並包圍支撐前述圓珠以使其可自由旋轉者，前述墨水孔40A則由前述圓珠室23貫穿圓珠相反側之另一端以供給墨水於前述圓珠30者，且，前述墨水孔4〇a 17 1238123 玖、發明說明至少具有墨水流通孔28A與墨水引導孔27，前述墨水流通孔28A係由前述圓珠室23朝圓珠相反側設置以使墨水朝圓珠室23流通者，前述墨水引導孔27則設置於前述墨水，流通孔28A之圓珠相反側，以朝前述墨水流通孔28A導入 * 5墨水者，且於前述固持座20之圓珠側外周，形成有朝圓珠側縮小直徑之錐部25，又，前述圓珠3〇之外徑小於 0.3mm，且前述墨水引導孔27之與前述墨水流通孔28八之連接部，係構成朝圓珠側縮小直徑而呈錐狀之直徑縮小孔 · 42A，前述直徑縮小孔42A之最大直徑p為〇 4mm以上， 10且，丽述直徑縮小孔42A之錐角度Q為3〇度以上9〇度以下。前述圓珠30係用以於書寫面塗布墨水，可使用超硬合金、硬化鋼、陶瓷等形成。於本發明中，其外徑小於 0.3mm，最好形成為〇·29ππη以下。 15 丽述固持座20係用以固持前述圓珠3〇。即，於設置於固持座20 —方側之端部之圓筒溝狀之圓珠室23内，收 · 納、包圍支撐圓珠30使其一部份由固持座2〇朝外部突出並可自由旋轉。 · 則述固持座20，係於其圓珠側外周形成有朝圓珠侧、縮 r 20 小直徑之錐部25。再者，岫述固持座20具有由前述圓珠室23朝圓珠相反側貫穿至另-側端部之墨水孔4〇A。該墨水孔4〇a係用以供給墨水於圓珠30，然而，順應圓珠3〇之外徑，前述圓珠室23亦為小直徑，因此，具有形成為較墨水孔4〇a 18 1238123 玖、發明說明之圓珠相反側直徑還小之墨水引導孔27及墨水流通孔28A ’以使墨水於圓珠室23内順暢地流通。前述墨水流通孔28A係由前述圓珠室23朝向圓珠相反側設置，係用以供給墨水至圓珠室23内之孔，且形成為 5 較圓珠30直徑還小。前述墨水引導孔27，係設置於前述墨水流通孔28A之圓珠相反側，係用以朝墨水流通孔28A導入墨水之孔，形成為較墨水流通孔28A直徑還大，然而，較墨水孔4〇A之圓珠相反側端部直徑還小。 10 且，前述墨水引導孔27之與墨水流通孔28A連接之部份’係構成朝圓珠側縮小直徑而呈錐狀之直徑縮小孔 42A。即，為了使内徑不同之兩個孔連接，係使墨水引導孔27之圓珠側縮小直徑並呈錐狀，且分別使直徑縮小孔 42A之最小徑相等於墨水流通孔28A之内徑F，直徑縮小 15 孔42A之最大徑P相等於墨水引導孔27之最小直徑。此外，於前述墨水流通孔28A周圍，可由墨水流通孔 28A之中心放射狀地形成多條墨水引導溝22A。該墨水引導溝22A係用以使墨水由墨水流通孔28A充分流通至圓珠室23之狹缝，且亦可由圓珠室23貫穿至墨水引導孔27， 20 並且亦可設置於由圓珠室23至墨水流通孔28a長度之中間。於本發明中，前述直徑縮小孔42A之最大徑p係形成為0.4mm以上。藉如此地形成，可使墨水由墨水引導溝27 朝墨水流通孔28a之導入順暢地進行，其結果為，不易發 1238123 玫、發明說明生因墨水供給不良，造成字模糊不清、線條斷掉之情形。進而，於本發明中，前述直徑縮小孔42A之直徑縮小孔錐角Q係形成為30度以上90度以下。藉如此地开:，、可不妨礙墨水朝圓珠室23流通’且以切槽加工形成墨水引 5導溝22A等時，可使薄層部不易發生拙曲之加工不良。另外，前述固持座20之錐部25之錐角度R，宜為乃度以上。藉如此地形成，可-面_保使前述直徑縮小孔42A之最大徑P’即墨水引導孔27之最小徑為大，—面儘可能地 1〇使薄層部份形成較厚，可進行較為穩定之墨水供給並可使加工不良不容易發生。 (第8發明） 15In view of the aforementioned sixth problem, the term "water-based ink" herein refers to ink that uses water as a basic material and has a thickening component or a coloring component dispersed therein. According to the foregoing, the ballpoint pen 15 of the ballpoint pen 40 related to the sixth invention has a nib 10 and a so-called pseudoplastic water-based ink having the aforementioned physical properties. Furthermore, the writing feel of the ball-point pen 40 containing such a pseudo-plastic water-based ink is smoother. (Seventh invention) In view of the seventh problem, the ballpoint pen tip 20 of the seventh invention of the present invention includes a ball 30 and a holder 20 for holding the ball 30. The holder 20 has a ball chamber 23 and ink. The hole 40A, the bead chamber 23 is used for receiving and enclosing the bead at one end so that it can rotate freely, and the ink hole 40A is penetrated by the bead chamber 23 at the other end of the opposite side of the bead to supply ink In the aforementioned ball 30, the ink hole 40a 17 1238123 玖, the description of the invention has at least an ink circulation hole 28A and an ink guide hole 27, and the ink circulation hole 28A is directed from the ball chamber 23 to the opposite side of the ball It is set so that the ink flows toward the bead chamber 23, and the ink guide hole 27 is provided on the ink, and the ball is opposite to the ball of the circulation hole 28A, and the * 5 ink is introduced into the ink circulation hole 28A, and is held in the holding seat. The outer periphery of the ball side of 20 is formed with a tapered portion 25 having a reduced diameter toward the ball side. The outer diameter of the ball 30 is less than 0.3 mm, and the ink guide hole 27 is connected to the ink circulation hole 28. Department Reduced diameter tapered shape of the reduced diameter bore · 42A, the maximum diameter of the reduced diameter p of the square hole 42A 4mm or more, and 10, Li said reduced diameter bore 42A taper angle of less than Q 3〇 ° 9〇 degrees lower. The ball 30 is used to apply ink to the writing surface, and may be formed using super hard alloy, hardened steel, ceramics, or the like. In the present invention, the outer diameter is less than 0.3 mm, and it is preferably formed to be ≦ 29ππη or less. 15 Lishu holding base 20 is used to hold the aforementioned ball 30. That is, in the cylindrical groove-shaped bead chamber 23 provided at the end of the holding seat 20 on the square side, the supporting ball 30 is received, received, and surrounded so that a part of the bead protrudes from the holding seat 20 to the outside and can be Free spin. · The retaining base 20 is formed by forming a tapered portion 25 with a small diameter of r 20 toward the bead side on the outer periphery of the bead side. In addition, the holding base 20 has an ink hole 40A penetrating from the aforementioned bead chamber 23 toward the opposite side of the bead to the other-side end. The ink hole 40a is used to supply ink to the ball 30. However, in accordance with the outer diameter of the ball 30, the aforementioned ball chamber 23 is also small in diameter. Therefore, the ink hole 40a is formed to be larger than the ink hole 40a 18 1238123. (2) The ink guide hole 27 and the ink circulation hole 28A ′ having a smaller diameter on the opposite side of the ball according to the invention to allow ink to flow smoothly in the ball chamber 23. The aforementioned ink circulation hole 28A is provided from the aforementioned bead chamber 23 toward the opposite side of the bead, and is a hole for supplying ink into the bead chamber 23, and is formed to have a diameter smaller than that of the bead 30. The ink guide hole 27 is provided on the opposite side of the ball of the ink circulation hole 28A, and is a hole for introducing ink toward the ink circulation hole 28A. The hole is formed to have a larger diameter than the ink circulation hole 28A. The diameter of the opposite end of the ball of OA is still small. Further, the portion of the ink guiding hole 27 connected to the ink circulation hole 28 'is a diameter-reducing hole 42A that is reduced in diameter toward the ball side and tapered. That is, in order to connect two holes with different inner diameters, the ball side of the ink guide hole 27 is reduced in diameter and tapered, and the smallest diameter of the reduced-diameter hole 42A is equal to the inner diameter F of the ink circulation hole 28A. The maximum diameter P of the reduced-diameter 15 hole 42A is equal to the minimum diameter of the ink guide hole 27. Further, a plurality of ink guide grooves 22A may be formed radially around the ink circulation hole 28A from the center of the ink circulation hole 28A. The ink guide groove 22A is a slit for allowing ink to fully circulate from the ink circulation hole 28A to the bead chamber 23, and may also pass from the bead chamber 23 to the ink guide holes 27, 20 and may also be provided in the bead chamber. 23 to the middle of the length of the ink circulation hole 28a. In the present invention, the maximum diameter p of the diameter-reducing hole 42A is formed to be 0.4 mm or more. By forming in this way, the introduction of ink from the ink guide groove 27 to the ink circulation hole 28a can be performed smoothly. As a result, 1238123 is not easy to produce. The invention explains that due to poor ink supply, the characters are blurred and the lines are broken. Situation. Further, in the present invention, the diameter-reducing hole taper angle Q of the diameter-reducing hole 42A is formed to be 30 degrees or more and 90 degrees or less. By doing this, when the ink flow to the bead chamber 23 is not hindered 'and the ink guide grooves 22A are formed by grooving processing, it is possible to make the thin layer portion less prone to churn processing defects. In addition, the taper angle R of the taper portion 25 of the holding base 20 is preferably equal to or more than one degree. By forming in this way, the surface can be made to ensure that the maximum diameter P ′ of the aforementioned reduced-diameter hole 42A, that is, the minimum diameter of the ink guide hole 27 is large, and the surface can be formed as thick as possible to make the thin layer portion 10, which can be performed. The relatively stable ink supply can make processing defects less likely to occur. (Eighth invention) 15

鑑於前述第8課題，本發明中第8發明之圓珠筆筆尖，包含有錐部25、圓珠室23、墨水引導孔27、墨水流通孔28A、及圓珠30，前述錐部25係將圓柱材一端之外周切削成頭細而形成者，前述圓珠室23則切削前述錐部Μ 之内周而形成’前述墨水引導孔27係由該圓柱材之另一端穿孔至前述圓珠室23之附近而形成者，該墨水流通孔28A 則貫穿前述圓珠室23與前述墨水引導孔27之間而形成，及刖述圓珠30係***前述圓珠室23内之直徑小於〇·3細，且最好為0.29mm以下者，且藉將前述_端之邊緣朝内方歛合加卫以形成歛合部，又，使前述BI珠30之直徑為D 及使丽述墨水流通孔28A之直徑為F冑，滿足 0.6。 20 1238123 玖、發明說明於第8發明中之圓柱材之材質，宜為不銹鋼、尤宜為鐵酸磁體系不鎮鋼。 “ 又’圓珠3G之材f宜諸如為超硬合金、硬化鋼、不鱗鋼、陶瓷等。 5 錐部25之形成，舉例而言，可使用錐狀之切削刀來進行。圓珠23之形成，舉例來說，可使用諸如鑽頭型之工具而進行。墨水引導孔27之形成，舉例而言，可使用擴孔器型之 10 工具而進行。墨水流通孔28A之形成，諸如可使用螺旋鑽頭來進行。於此，墨水流通孔28A之直徑，由前述關係看來必需較圓珠至23之内徑還小，然而亦必需較墨水引導孔之直徑退小。此外，宜於墨水流通孔28A周圍，最好於3處以 15 上’形成可確保墨水流通之墨水引導溝22A。歛合加工，舉例而言，可使用錐狀之輥來進行。依前述，於收容直徑小於〇.3mm，且最好係〇29咖以下之圓珠30之圓柱材製之圓珠筆筆尖1〇中，利用使用以形成墨水流通孔28A之切削量恰當，而防止因加工之影 2〇響造成圓珠室23變形與破裂，並同時不易引發圓珠沉陷。 (第9發明）鑑於前述第9課題，本發明中第9發明之圓珠筆筆尖 10,包含有錐部25、圓珠室23、墨水引導孔27、墨水流通孔28A、及圓珠30，前述錐部25係將圓柱材一端之外 21 1238123 玖、發明說明周切削成頭細而形成者，前述圓珠室23則切削前述錐部 25之内周而形成，前述墨水引導孔27係由該圓柱材之另一端穿孔至前述圓珠室23附近而形成者，該墨水流通孔 · 28A則貫穿前述圓珠室23與前述墨水引導孔27之間而形 , 5 成，及前述圓珠30係***前述圓珠室23内之直徑小於 0.33mm，且最好為〇.29mm以下者，且藉將前述一端之邊緣朝内方歛合加工以形成歛合部，又，使前述圓珠3〇之直徑為D，並使該圓珠30之由前述歛合部前端突出之突出尺 · 寸為G及使該歛合部之内徑為η時，滿足g/D - 〇·25且 10 〇.〇〇5mm$D - HS0.01〇mm 之關係。第9發明中之圓柱材及圓珠3〇之材質，及錐部25、圓珠室23、墨水引導孔27及墨水流通孔28A之形成及歛合加工係與前述第8發明相同。依前述，於收容直徑小於〇.3mm，且最好係〇29mm 15以下之圓珠30之圓柱材製之圓珠筆筆尖10中，利用使歛合部21之形成所需之變形量恰當，而有效地防止書寫時之 · 阻礙與圓珠跳脫。 (第10發明） - 鑒於刚述第10課題，本發明中第10發明之圓珠筆筆 · 2〇尖’係包含有錐部25、圓珠室23、墨水引導孔27、墨水流通孔28A、及圓珠3〇，前述錐部25係將圓柱材一端之卜周刀肖j成頭細而形成者’前述圓珠室23則係切削前述錐部25之内周而形成，前述墨水引導孔27係由該圓柱材之另一端穿孔至前述圓珠室23附近而形成者，該墨水流通孔 22 1238123 玖、發明說明In view of the aforementioned eighth problem, the ballpoint pen tip of the eighth invention of the present invention includes a tapered portion 25, a ball chamber 23, an ink guide hole 27, an ink circulation hole 28A, and a ball 30. The tapered portion 25 is a cylindrical material The outer periphery of one end is cut into a thin head, and the ball chamber 23 is formed by cutting the inner periphery of the tapered portion M. The ink guide hole 27 is perforated from the other end of the cylindrical material to the vicinity of the ball chamber 23. In the former, the ink circulation hole 28A is formed between the ball chamber 23 and the ink guide hole 27, and the ball 30 is inserted into the ball chamber 23 with a diameter smaller than 0.3 mm, and It is preferable that the diameter is 0.29mm or less, and the edge of the _ end is converged inward to form a convergent portion, and the diameter of the BI beads 30 is D and the diameter of the ink circulation hole 28A is set. Is F 胄 and satisfies 0.6. 20 1238123 发明 Description of the invention The material of the cylindrical material in the eighth invention is preferably stainless steel, and particularly preferably ferritic magnetic system ballast steel. "Also, the material f of the ball 3G should be, for example, cemented carbide, hardened steel, non-scale steel, ceramics, etc. 5 The formation of the tapered portion 25 can be performed, for example, using a tapered cutter. Ball 23 The formation of the ink guide hole 27 can be performed using, for example, a drill type tool. The formation of the ink guide hole 27 can be performed using, for example, a reamer type 10 tool. The formation of the ink circulation hole 28A can be performed, for example. Auger drill is used. Here, the diameter of the ink circulation hole 28A must be smaller than the inner diameter of the ball to 23 from the foregoing relationship, but it must be smaller than the diameter of the ink guide hole. In addition, it is suitable for ink circulation Around the hole 28A, it is best to form 15 ink guide grooves 22A at three places to ensure the ink circulation. Convergence processing, for example, can be performed using a tapered roller. According to the foregoing, the diameter of the accommodation is less than 0.3mm In addition, it is preferable that the ballpoint pen tip 10 made of a cylindrical material of a ball 30 with a diameter of less than 29 cm is used to form an ink circulation hole 28A with a suitable cutting amount to prevent the ball chamber from being caused by the processing shadow of 20 sounds. 23 deformation and cracking, (Ninth invention) In view of the ninth problem, the ballpoint pen tip 10 of the ninth invention of the present invention includes a tapered portion 25, a ball chamber 23, an ink guide hole 27, an ink circulation hole 28A, And ball 30, the tapered portion 25 is formed by cutting the outside of one end of a cylindrical material 21 1238123, the description of the invention is formed by cutting the circumference into a thin head, and the ball chamber 23 is formed by cutting the inner circumference of the tapered portion 25, the ink The guide hole 27 is formed by perforating the other end of the cylindrical material to the vicinity of the aforementioned bead chamber 23. The ink circulation hole 28A is formed between the aforementioned bead chamber 23 and the aforementioned ink guide hole 27. And the above-mentioned ball 30 is inserted into the above-mentioned bead chamber 23 with a diameter of less than 0.33mm, and preferably 0.29mm or less, and the edge of the one end is converged inward to form a convergent portion. When the diameter of the ball 30 is D, and the protruding size of the ball 30 protruding from the front end of the convergence portion is G and the inner diameter of the convergence portion is η, g / D- 0.25 and 10 〇005mm $ D-HS0.01〇mm. The cylindrical material in the ninth invention And the material of the ball 30, and the formation and convergence processing of the tapered portion 25, the bead chamber 23, the ink guide hole 27, and the ink circulation hole 28A are the same as the aforementioned eighth invention. According to the foregoing, the containing diameter is less than 0. 3 mm, and preferably a ball-point pen tip 10 made of a cylindrical material with a diameter of 30 mm or less and a ball diameter of 30 or less, uses the appropriate amount of deformation required to form the convergence portion 21 to effectively prevent obstruction and roundness during writing (10th invention)-In view of the 10th problem just described, the ballpoint pen according to the 10th invention of the present invention, the "20 tip" system includes a tapered portion 25, a ball chamber 23, an ink guide hole 27, and ink circulation. The hole 28A and the bead 30. The tapered portion 25 is formed by thinning one end of a cylindrical material at one end. The aforementioned ball chamber 23 is formed by cutting the inner periphery of the tapered portion 25. The ink guide hole 27 is formed by perforating the other end of the cylindrical material to the vicinity of the aforementioned bead chamber 23. The ink circulation hole 22 1238123 发明, description of the invention

28A則貫穿前述圓珠室23與前述墨水引導孔27之間而形成，及前述圓珠30係***前述圓珠室23内之直徑小於 0.3mm，且最好為0.29mm以下者，且藉將前述一端之邊緣朝内方歛合加工以形成歛合部，又，使前述圓珠30之直徑 5 為D，並使前述墨水流通孔28 A之直徑為F，且使前述圓珠30之由前述歛合部前端突出之突出尺寸為G及使該歛合部之内徑為Η時，滿足0.4SF/DS0.6，G/D-0.25且 0.005mm$D—HS 0.010mm 之關係。於第10發明中之圓柱材及圓珠30之材質，及錐部25 10 、圓珠室23、墨水引導孔27及墨水流通孔28A之形成及歛合加工係與前述第8發明相同。28A is formed through the space between the bead chamber 23 and the ink guide hole 27, and the diameter of the bead 30 inserted into the bead chamber 23 is less than 0.3mm, and preferably 0.29mm or less. The edge of the one end is converged inward to form a convergent portion, and the diameter 5 of the ball 30 is D, and the diameter of the ink circulation hole 28 A is F, and the reason of the ball 30 is When the protruding size of the front end of the convergence portion is G and the inner diameter of the convergence portion is Η, the relationship of 0.4SF / DS0.6, G / D-0.25, and 0.005mm $ D—HS 0.010mm is satisfied. The materials of the cylindrical material and the bead 30 in the tenth invention, and the formation and convergence processing of the tapered portion 25 10, the bead chamber 23, the ink guide hole 27 and the ink circulation hole 28A are the same as those of the eighth invention.

依前述，於收容直徑小於〇.3mm，且最好係0.29mm 以下之圓珠30之圓柱材製之圓珠筆筆尖10中，利用使墨水流通孔28A及歛合部21之形成所需之變形量恰當，而 15 可防止因加工之影響造成圓珠室23變形與破裂，且不易發生圓珠沉陷，並同時可有效地防止書寫時之阻礙與圓珠跳脫。此外，前述各發明之技術特徵，可按照需要任意地組合。 20 【實施方式】發明之實施形態 (1)第1實施形態以下，將與本發明有關之圓珠筆筆尖及其製造方法之第1實施形態，與圖示例一起作說明。 23 1238123 玖、發明說明第1圖及第2圖係本實施形態之圓珠筆筆尖1〇之正視圖，第3圖係該圓珠筆筆尖10之前端部份之正視圖（A)及俯視圖（B)，第4圖至第10圖係顯示該圓珠筆筆尖1〇之製造步驟之正視圖，且，第11圖至第13圖乃顯示結合有該 5 圓珠筆筆尖10之圓珠筆40之正視截面圖。 (1-1)圓珠筆筆尖10 如第1圖及第2圖所示，本實施形態之圓珠筆筆尖1〇包含有固持座20與圓珠30。 (1-1-1)固持座20 10 前述固持座20係用以固持圓珠3〇之結構。該固持座20係由碳含量0·03%以下之沃斯田鐵系不銹鋼製之金屬細管形成。該沃斯田鐵系不銹鋼係使用鎳含量 10%以上之諸如SUS316、SUS316L或SUS305等。且，於固持座20之製造製程中，增加退火後之加工步驟等，使完 15成硬度於維氏硬度350以上。又，該固持座20具有圓筒狀之基部28與圓筒狀之縮小部29’前述圓筒狀之基部28係與圓珠筆4〇結合時位於後端側者’月ij述圓筒狀之縮小部29則係與圓珠筆結合時位於前端側，且_及外徑較該基部28還小者。 20According to the foregoing, in the ballpoint pen tip 10 made of a cylindrical material containing a ball 30 having a diameter of less than 0.3 mm and preferably 0.29 mm or less, the deformation amount required to form the ink circulation hole 28A and the convergence portion 21 is used. Appropriate, and 15 can prevent the deformation and cracking of the bead chamber 23 due to the influence of processing, and it is not easy for the bead to sink, and at the same time, it can effectively prevent the obstruction and the ball from jumping off during writing. In addition, the technical features of the foregoing inventions can be arbitrarily combined as required. [Embodiment] Embodiments of the invention (1) First embodiment Hereinafter, a first embodiment of a ballpoint pen tip and a method for manufacturing the same according to the present invention will be described together with an example in the drawings. 23 1238123 (1) Figures 1 and 2 of the invention are front views of the ballpoint pen tip 10 of this embodiment, and FIG. 3 is a front view (A) and a top view (B) of the front end portion of the ballpoint pen tip 10. 4 to 10 are front views showing the manufacturing steps of the ballpoint pen tip 10, and FIGS. 11 to 13 are front sectional views showing a ballpoint pen 40 incorporating the 5 ballpoint pen tip 10. (1-1) Ballpoint pen tip 10 As shown in FIG. 1 and FIG. 2, the ballpoint pen tip 10 of this embodiment includes a holder 20 and a ball 30. (1-1-1) Holding base 20 10 The aforementioned holding base 20 is a structure for holding the ball 30. The holder 20 is formed of a thin metal tube made of Vosstian iron-based stainless steel having a carbon content of 0.03% or less. The Vostian iron-based stainless steel is made of SUS316, SUS316L or SUS305 with a nickel content of 10% or more. In addition, in the manufacturing process of the holder 20, processing steps such as annealing are added, so that the hardness of 15% is more than 350 Vickers hardness. The holding base 20 includes a cylindrical base portion 28 and a cylindrical reduction portion 29 '. The cylindrical base portion 28 is located at the rear end side when the cylindrical base portion 28 is combined with the ballpoint pen 40. The portion 29 is located on the front side when combined with a ballpoint pen, and the outer diameter is smaller than the base portion 28. 20

則述鈿小部29之前端部份成為圓錐狀之歛告 21 °又，於該縮小部29中，在距離歛合部2i預定距隸位置形成有朝内方穿山方大4之3個时突起22。又，該縮小 29之内部空間成為收容圓珠30之圓珠室23。 24 1238123 玫、發明說明又，前述縮小部29於其歛合部21附近外周具有圓錐狀之錐部25。 0-1-2)歛合部21 月’J述歛合部21係用以由前端側支撐收納於圓珠室23 5 之圓珠30之結構。该歛合部21係設置於縮小部29之前端部份。又，该歛合部21係形成為圓錐面狀，且其内徑形成為較圓珠30之直徑（D)還小（參照第3圖A)。 (1-1-3)内方突起22 鈉述内方犬起22係用以由後端側支撐收納於圓珠室 23之圓珠30之構造。该内方突起22係於縮小部29之預定位置，即於距離欽合部預定距離之位置合計設置有3個。又，該等3個内方突起22,由固持座2〇中心俯看係 15設置為放射狀（參照第3B圖）。又，各内方突起22係朝向固持座2〇内方突出。藉此，内方突起22之内接圓半徑（F)係形成為較圓珠3〇之直徑 (D)還小。又，各内方突起22於其圓珠室23側之面具有與圓珠 20 30相連接之部份之圓珠承接座24。 (11-4)圓珠室23 前述圓珠室23係用以收納圓珠3〇之結構。該圓珠室23係意指歛合部21與各内方突起22之間之内部空間。 1238123 玖、發明說明又，該圓珠室23之内徑係形成為較圓珠3〇之直徑（d) 稍大。 (M-5)錐部 25 月i述錐部25係用以於書寫時使固持座2〇不接觸書寫 5 面之結構。該錐部25係於縮小部29之歛合部21附近外周，設置成與歛合部21相接連，並形成為由前端侧朝後端侧外徑逐漸擴大之圓錐面狀。Then, the front end of the small part 29 becomes conical and converges 21 °. In the reduced part 29, when the distance from the convergence part 2i to the predetermined distance from the slave is formed, three inwardly crossing mountains are formed. Protrusions 22. The inner space of the reduced size 29 is a bead chamber 23 for containing the bead 30. 24 1238123 Rose, description of the invention The aforementioned reduced portion 29 has a conical tapered portion 25 on the outer periphery near the convergent portion 21. 0-1-2) Converging section 21 The 'converging section 21' is a structure for supporting the ball 30 accommodated in the bead chamber 23 5 from the front end side. The convergence portion 21 is provided at a front end portion of the reduction portion 29. The converging portion 21 is formed in a conical shape, and its inner diameter is smaller than the diameter (D) of the ball 30 (see Fig. 3A). (1-1-3) Inner side protrusion 22 The inner side dog 22 is a structure for supporting the bead 30 accommodated in the bead chamber 23 from the rear end side. The inner protrusions 22 are provided at a predetermined position of the reduction portion 29, that is, a total of three are provided at a predetermined distance from the coupling portion. The three inner protrusions 22 are provided in a radial shape by the center 20 of the holding seat 20 (see FIG. 3B). Each of the inner protrusions 22 protrudes toward the inner side of the holding seat 20. As a result, the inscribed circle radius (F) of the inner protrusion 22 is formed to be smaller than the diameter (D) of the ball 30. In addition, each of the inner protrusions 22 has a ball receiving seat 24 on a surface on the side of the ball chamber 23 connected to the ball 20 and 30. (11-4) Bead Chamber 23 The aforementioned bead chamber 23 is a structure for accommodating balls 30. The bead chamber 23 means an internal space between the convergence portion 21 and each of the inner protrusions 22. 1238123 (ii) Description of the invention The inner diameter of the ball chamber 23 is slightly larger than the diameter (d) of the ball 30. (M-5) Conical section 25. The conical section 25 described above is used to prevent the holder 20 from contacting the writing 5 surface when writing. The tapered portion 25 is formed on the outer periphery near the converged portion 21 of the reduced portion 29, and is provided in contact with the converged portion 21, and is formed in a conical surface shape that gradually increases in outer diameter from the front end side toward the rear end side.

(1-1-6)墨水引導孔27 10 岫述墨水引導孔27係用以供給墨水至圓珠室23所收納之圓珠30之結構。 «亥墨水引導孔27係形成為成為材料之金屬細管之内部空間’並連繫固持座20後端至圓珠室23。 (1-1-7)圓珠 30 15 前述圓珠30係用以於書寫面塗布墨水之結構。(1-1-6) Ink guide hole 27 10 The ink guide hole 27 is a structure for supplying ink to the beads 30 housed in the bead chamber 23. «Hai ink guide hole 27 is formed as an inner space of a metal thin tube as a material 'and is connected to the rear end of the holder 20 to the bead chamber 23. (1-1-7) Ball 30 15 The aforementioned ball 30 is a structure for applying ink to a writing surface.

該圓珠30係由超硬合金形成。又，該圓珠3〇之直徑 (D)係〇.29mm 以下。又，該圓珠30係收納於圓珠室23，僅使預定之圓珠大出尺寸（G)之部份由歛合部21突出至固持座2〇外部（泉 2〇照第3圖A)，然後，藉歛合部21與各内方突起22支撐且固持，使其可於固持座20前端側自由旋轉。又，於圓珠30與歛合部21之間設置有稱作縫隙以之微小間隙。該縫隙26係成為書寫時之墨水之通路。且，隨著圓珠30旋轉，黏著於圓珠3〇表面之黑水扩 26 1238123 玖、發明說明繪於書寫面’藉此於書寫面畫出線條。 (1-2)圓珠筆筆尖之製造方法接著，針對本實施形態之圓珠筆筆尖1〇之製造方法作說明。本實施形態之圓珠筆筆尖10之製造方法，包含有縮 5小步驟、切削步驟、按壓步驟、完成步驟及歛合步驟。第4圖係顯示加工前之固持座2〇之前端側。該固持座 20具有預定尺寸之内徑（E)。 (1-2-1)縮小步驟前述縮小步驟係於固持座2〇前端側設置縮小部29之 10 步驟。具體而言，如第5圖所示，於距離固持座2〇前端預定距離⑴以輥50施行縮小加工，藉此於固持座20前端側形成縮小部29。且，固持座2〇之縮小部29以外之部份係形成基部28。 15 U-1-2)切削步驟刖述切削步驟係藉切削縮小部29内周面而疏通之步驟〇具體吕之，如第6圖所示，以鑽頭7〇切削縮小部29 内周面，使構成預定尺寸之内徑（κ，然* K<E)，藉此疏 20通縮小部29之内周面。 (1-2-3)按壓步驟 ^述按[步驟’係藉於縮小部29之預定位置施行按壓加工’以於縮小部29之預定位置設置3個内方突起22之步驟。 1238123 玖、發明說明具體來說，如第7圖所示，於距離在縮小部29之固持座20前端預定距離（L，但是L<J)之3處之外周面，使用則端為球狀之拍擊卫具施行按壓加卫，藉此設置3個朝向固持座20内方突出之内方突起22。該等3個内方突起22 5由固持座20中心俯看係設置成放射狀（參照第3目B)。此外，該按壓步驟中之内方突起22之變形量，係形成為該等The ball 30 is formed of a cemented carbide. The diameter (D) of the ball 30 is 0.29 mm or less. The bead 30 is housed in the bead chamber 23, and only a portion (G) of a predetermined ball is protruded from the convergence portion 21 to the outside of the holding seat 20 (the spring 20 according to FIG. 3A) ). Then, the convergence portion 21 and the inner protrusions 22 are supported and held so that they can rotate freely on the front end side of the holding base 20. A minute gap called a gap is provided between the ball 30 and the convergence portion 21. The slit 26 is a passage for ink when writing. And, as the bead 30 rotates, the black water adhering to the surface of the bead 30 spreads. 12 1238123 发明, description of the invention Draw on the writing surface 'This draws lines on the writing surface. (1-2) Manufacturing method of ballpoint pen tip Next, a manufacturing method of the ballpoint pen tip 10 of this embodiment will be described. The manufacturing method of the ballpoint pen tip 10 of this embodiment includes a small step of shrinking, a cutting step, a pressing step, a completion step, and a convergence step. Figure 4 shows the front end side of the holder 20 before processing. The holding base 20 has an inner diameter (E) of a predetermined size. (1-2-1) Reduction step The aforementioned reduction step is a step of providing a reduction portion 29 on the front end side of the holder 20. Specifically, as shown in FIG. 5, a reduction process is performed by a roller 50 at a predetermined distance 前端 from the front end of the holding base 20, thereby forming a reduced portion 29 on the front end side of the holding base 20. Further, a portion other than the reduced portion 29 of the holding seat 20 forms the base portion 28. 15 U-1-2) Cutting step Description The cutting step is a step of unblocking the inner peripheral surface of the reduced portion 29 by cutting. Specifically, as shown in FIG. The inner diameter (κ, then * K < E) constituting a predetermined size is made so as to sparse the inner peripheral surface of the through-reduction portion 29. (1-2-3) Pressing step ^ The step of pressing [Step 'is to perform pressing processing at a predetermined position of the reduction section 29' to set three inner protrusions 22 at predetermined positions of the reduction section 29. 1238123 发明 Description of the invention Specifically, as shown in FIG. 7, the outer peripheral surface is at a predetermined distance (L, but L < J) at a predetermined distance (L, but L < J) from the front end of the holding seat 20 of the reduction portion 29, and the end is spherical The slamming guard implements pressurization, thereby providing three inner protrusions 22 protruding toward the inner side of the holding base 20. The three inner protrusions 22 5 are arranged radially from the center of the holding base 20 (see item 3B). In addition, the deformation amount of the inner protrusion 22 in the pressing step is formed as such

内接圓之直徑F(然而F<K)及前述圓珠直徑D滿足0.4^ F/D$ 〇·6之程度。其-人，如第8圖所示，使用錐狀切削刀將固持座2〇前 1〇端外周切削成圓錐狀，設置錐部25。 (1-2-4)完成步驟前述完成步驟係如第9圖所示，使用鑽頭80切削内方大出邛22刖端側之面及由内方突出部至前端之内周面，使 Μ成為預疋尺寸（然而，較κ大，且較以）之内徑之步驟。The diameter F of the inscribed circle (however F < K) and the aforementioned ball diameter D satisfy the degree of 0.4 ^ F / D $ 0.6. The other person, as shown in FIG. 8, uses a tapered cutter to cut the outer periphery of the front end 20 of the holding seat 20 into a cone shape, and a tapered portion 25 is provided. (1-2-4) Completion steps The aforementioned completion steps are shown in FIG. 9 by using a drill 80 to cut the surface on the inner side of the large outer side 邛 22 刖 and the inner peripheral surface from the inner protrusion to the front end, so that Μ The step of becoming the inner diameter of the pre-diameter size (however, larger than κ, and larger).

1 v驟自各内方突起22起之前端側之縮小部29 内部成為圓珠室23,又，各内方突起22之前端側之面構成圓珠承接座24。另外，自各时突起22起之後端側之固持座20内部則形成墨水引導孔27。 (^-2-5)歛合步驟 4歛合步驟’係於插人圓珠％於圓珠室Μ後，於口持座2〇之縮小部29側之端部設置歛合部21之步驟。八而Ό首先，如第10圖所示，***圓珠30於圓於錐部25前端使⑽施行歛合加工以設 -口邛2卜藉此形成第i圖所示之圓珠筆筆尖10。然而 28 1238123 玖、發明說明 ’該欽合加工之變形量係形成為前述圓珠突出尺寸G、前述圓珠直控D及前述歛合部前端内徑Η滿足G/D-0.25且〇.〇〇5mm$D — H$〇.〇l〇mm 之程度。 (1-3)圓珠筆4〇之形狀 5 依前述步驟形成之圓珠筆筆尖10，係結合於如第u 圖所示之圓珠筆40。該圓珠筆40具有墨水收容管· 44、軸筒43、連接器41、圓珠筆筆尖1〇、封口件“及尾栓47。墨水收容管44係收容水性凝膠狀之墨水45及油性凝膠狀之墨水隨動體46。連接器41係利用於其前端側安裝 ίο圓珠筆筆尖ίο，且其後端側安裝於墨水收容管44前端，而連接圓珠筆筆尖1〇與墨水收容管44。軸筒幻係構成圓珠筆筆尖10外侧之部份，且其内部收容墨水收容管44。且，於軸筒43前端，擰緊一可覆蓋連接器41之封口件42 。又，於軸筒43後端安裝尾栓47。即，該第u圖所示之 15圓珠筆4〇係所謂中黏度水性凝膠墨水圓珠筆。又，依前述步驟而形成之圓珠筆筆尖1〇，亦有結合於如第12圖所示之圓珠筆4〇。該圓珠筆4〇包含有軸筒43、收集器49、連接器41、圓珠筆筆尖1〇、替換芯料、橡膠柄43a及尾栓47。 !〇軸筒43直接收容富含水性流動性之墨水。軸筒43内之墨水透過纖維質之替換芯48,藉毛細管現象朝安裝圓珠筆筆尖10之連接器4!方向移動。又，於該替換芯48周圍設置有由用以緩衝軸筒43内外遷力差變化之多數直尾翅構成之收集器49。又，軸筒43之前端部份係構成頭較細， 29 1238123 玖、發明說明亦可覆蓋連接器41，且同時於軸筒43之握柄部份安裳有防滑之橡膠柄43a。即，第12圖所示之圓珠筆4〇，係所謂直液式水性圓珠筆。此外，依前述步驟形成之圓珠筆筆尖1〇，亦有結合於 5如第13圖所示之圓珠筆40。該圓珠筆40包含有中棉4如、連接器41、圓珠筆筆尖1〇、替換芯糾、軸筒们及尾栓 47。即，軸筒43内部直接收容浸潰有水性墨水之中棉他，含浸於芯内之墨水透過纖維質之替換芯48，藉毛細管現象朝安裝圓珠筆筆尖10之前端方向移動。又，該替換芯 ίο 48之前端係由圓珠筆筆尖ίο後端***至圓珠室23。即，第13圖所示之圓珠筆4〇，係所謂中棉式水性圓珠筆。 (2)第2實施形態以下，將本發明圓珠筆筆尖及其製造方法之第2實施形態與圖示例一起作說明。 15 (2-1)圖示說明第圖係本實施形態之圓珠筆筆尖前端部份之正視圖。第15圖及第16圖係本實施形態之圓珠筆筆尖ι〇之正視圖。第π圖係該圓珠筆筆尖1G前端部份之俯視截面圖。第18圖至第24圖係顯示該圓珠筆筆尖1〇之製造製程之正 20 視圖。 (2-2)圓珠筆筆尖10 圓珠筆筆尖10係如第14圖至第16圖所示，包含有圓珠筆30,與用以固持圓珠筆3()之固持座2()。又，前述固持座20至少具有用以收納圓珠3〇之圓珠室23、用以使收 30 1238123 玖、發明說明納於圓珠室23之圓珠30不朝外部跳出之歛合部2ι、及用以供給墨水於圓珠30之墨水孔40A。 (2-2-1)固持座20 前述固持座20係用以固持圓珠3〇之略圓筒形之構件 5 〇該前述固持座20係使用黃銅、洋銀、不銹鋼等圓柱材而形成，具有用以收納圓珠30之圓珠室23、用以使收納於圓珠室23之圓珠30不朝外部跳出之歛合部21、及用以供給墨水至圓珠30之墨水孔40A。 10 又，於固持座20之圓珠側（即，該固持座20前端之外周）形成有朝向圓珠側縮小直徑之頭細之錐部乃。該錐部前端部份之内部空間，係成為收容圓珠3〇之圓珠室& 另外，該錐部25前端部份之外周成為圓錐狀之歛合部21 。該錐部25之錐角（外形錐角R)宜形成為乃度以上。此 U㈣外型錐角R與後述墨水引導孔27之内徑（直徑縮小孔 42A之最大徑）之關係中’使墨水之供給可良好地進行，且為了於加工時不易造成拙曲等之適當之角度，其根據於後述。口持座2G之後端部份之外徑為小直徑，成為連接墨水 2〇填充物之接連部29A(參照第15圖及第16圖）。進而，由固持座20後端至前端之内部空間，係如第 15圖所示，成為内徑階段性地狹小之墨水引導孔π。且，該墨水引導孔27與圓珠室23係以墨水流通孔28A貫穿。並且於該墨水流通孔28A周圍之4處形成有放射狀之墨水 31 1238123 玖、發明說明引導溝22A，藉此亦可使墨水5丨導孔27與圓珠室23互通〇 (2-2-3)圓珠室23 圓珠室23係設置於固持座2〇之一端之用以收納圓珠 5 30之空間，具有内徑較圓珠3〇之圓珠直徑d猶大之圓筒狀之側壁51，與以圓珠相反側為頂點側之圓錐狀之底面部 52。（參照第14圖）又，於忒圓珠室23後端面設置有預定直徑（F)之墨水流通孔28A，藉此與墨水引導孔27互通。再者，於該墨水 10流通孔28A周圍放射狀地穿孔有4處與前述墨水引導孔27 互通之墨水引導溝22A(參照第17圖）。另外，於該底面部 52形成有具有與圓珠3〇之曲率幾乎同一曲率之凹球面狀之圓珠承接座24。該圓珠承接座24係由後端支撐圓珠3〇。且該底面部52之角度可於90度乃至170度之間適當選 15 擇。 (2-2-3)歛合部21 歛合部21，係將固持座20之圓珠室23側之一端形成圓錐狀者’係由前端側支撐收納於圓珠室23之圓珠3〇，且同時用以使圓珠30不由圓珠室23跳出者。該歛合部21 20 係設置於錐部25之前端部份。又，該歛合部21形成為圓錐面狀，其内徑（H)形成為較圓珠30之直徑（D)還小（參照第14圖）。該歛合部21係於圓珠室23收納有圓珠30後，藉於固持座20端部施行輥軋加工而形成，且歛合部21之内徑η 32 1238123 玫、發明說明形成為較圓珠30之圓珠直徑D還小。再者π 合部21之内阊之門再者，圓珠30與潑之内51之間設置有微小間隙。使圓珠30之一邮/八jj ^ ,1, , 邛伤由别述圓珠室23朝外部、, 同時藉該歛合部21句囹*产外门* 丨大出’亚其可自由r鑪於固持座20前端使〇η ^ ^ ?, 々疋轉，使黏著於之墨水描緣於書寫面以畫出線條。此之間隙（縫隙）成為墨水之通路。次小 (2-2-4)錐部 25 10The interior of the reduced portion 29 on the front end side from each inner protrusion 22 becomes a bead chamber 23, and the front end surface of each inner protrusion 22 constitutes a bead receiving seat 24. In addition, an ink guide hole 27 is formed inside the holding seat 20 at the rear end side from the projection 22 at each time. (^ -2-5) Convergent Step 4 Convergent Step 'is a step of inserting convergent portion 21 on the end of the reduced portion 29 side of the mouth holder 20 after inserting the bead% into the bead chamber M . First, as shown in FIG. 10, the ball 30 is inserted at the front end of the tapered portion 25, and the ball is converged to form a mouthpiece 2b to form the ballpoint pen tip 10 shown in FIG. I. However, 28 1238123 发明, the description of the invention 'the deformation amount of the coincidence processing is formed as the aforementioned ball protruding size G, the aforementioned ball direct control D, and the aforementioned inner diameter of the front end of the convergence portion Η satisfies G / D-0.25 and 0.0. 〇5mm $ D — H $ 0.01mm. (1-3) The shape of the ball-point pen 40. The ball-point pen tip 10 formed in the foregoing steps is coupled to the ball-point pen 40 as shown in Fig. U. The ball-point pen 40 includes an ink containing tube 44, a shaft barrel 43, a connector 41, a ball-point pen tip 10, a sealing member ", and a tail plug 47. The ink containing tube 44 contains an aqueous gel-like ink 45 and an oily gel-like Ink follower 46. The connector 41 is a ballpoint pen tip mounted on the front end side, and a rear end side is mounted on the front end of the ink receiving tube 44 to connect the ballpoint pen tip 10 to the ink receiving tube 44. The outer part of the ballpoint pen tip 10 is formed, and the ink receiving tube 44 is contained inside. Furthermore, a sealing member 42 covering the connector 41 is tightened at the front end of the shaft barrel 43. A tail bolt 47 is installed at the rear end of the shaft barrel 43 That is, the 15 ballpoint pen 40 shown in the u figure is a so-called medium viscosity water-based gel ink ballpoint pen. In addition, the ballpoint pen tip 10 formed according to the foregoing steps is also combined with the ballpoint pen 4 shown in FIG. 12 The ball-point pen 40 includes a shaft barrel 43, a collector 49, a connector 41, a ball-point pen tip 10, a replacement core material, a rubber handle 43a, and a tail bolt 47. The shaft barrel 43 directly contains water-rich fluidity. Ink. Ink in shaft 43 penetrates The fibrous replacement core 48 is moved toward the connector 4! Of the ballpoint pen tip 10 by a capillary phenomenon. Furthermore, a plurality of straight tail fins are provided around the replacement core 48 to buffer the change in the internal and external force difference of the shaft cylinder 43. Collector 49. The front end of the shaft cylinder 43 has a thinner head, 29 1238123 123, the description of the invention can also cover the connector 41, and at the same time, there is a non-slip on the handle part of the shaft cylinder 43. The rubber handle 43a. That is, the ball-point pen 40 shown in FIG. 12 is a so-called straight liquid water-based ball-point pen. In addition, the ball-point pen tip 10 formed in the foregoing steps is also combined with the ball-point pen 40 shown in FIG. 13 The ball-point pen 40 includes a cotton pad 4 such as a connector 41, a ball-point pen tip 10, replacement cores, shaft cylinders, and a tail bolt 47. That is, the inside of the shaft cylinder 43 directly contains the cotton impregnated with water-based ink. The ink impregnated in the core passes through the fibrous replacement core 48 and moves toward the front end of the ballpoint pen tip 10 by the capillary phenomenon. The front end of the replacement core 48 is inserted into the ball chamber 23 from the rear end of the ballpoint pen tip. That is, as shown in FIG. 13 The ball-point pen 40 is a so-called mid-cotton water-based ball-point pen. (2) Second Embodiment Hereinafter, the second embodiment of the ball-point pen tip of the present invention and the method for manufacturing the ball-point pen will be described together with an example of the figure. 15 (2-1) Figure The illustration is a front view of the tip portion of the ballpoint pen tip of this embodiment. Figures 15 and 16 are front views of the ballpoint pen tip of this embodiment. Figure π is a front view of the 1G tip portion of the ballpoint pen tip. Top sectional view. Figures 18 to 24 are 20 views showing the manufacturing process of the ballpoint pen tip 10. (2-2) Ballpoint pen tip 10 The ballpoint pen tip 10 is shown in Figures 14 to 16 and includes There are a ballpoint pen 30 and a holder 2 () for holding the ballpoint pen 3 (). In addition, the above-mentioned holding seat 20 has at least a bead chamber 23 for accommodating the bead 30, a convergence part 2 for receiving 30 1238123 发明, and a description of the invention. The bead 30 accommodated in the bead chamber 23 does not jump out to the outside. And an ink hole 40A for supplying ink to the ball 30. (2-2-1) Holder 20 The aforementioned holder 20 is a slightly cylindrical member 5 for holding a ball 30. The aforementioned holder 20 is formed by using cylindrical materials such as brass, silver, stainless steel, etc. There is a bead chamber 23 for accommodating the beads 30, a convergence part 21 for preventing the bead 30 accommodated in the bead chamber 23 from jumping out, and an ink hole 40A for supplying ink to the bead 30. 10 Further, a thin tapered portion having a reduced diameter toward the ball side is formed on the ball side of the holding base 20 (that is, the outer periphery of the front end of the holding base 20). The inner space of the front end portion of the tapered portion is a bead chamber accommodating the ball 30, and the outer periphery of the front end portion of the tapered portion 25 is a conical convergent portion 21. The taper angle (outer taper angle R) of the taper portion 25 is preferably set to be greater than or equal to degrees. The relationship between the U㈣ shape taper angle R and the inner diameter of the ink guide hole 27 (the largest diameter of the reduced diameter hole 42A) described later is to 'allow the supply of ink to be performed well, and to prevent the occurrence of aberrations etc. during processing. The angle is based on the following. The outer diameter of the rear end portion of the mouthpiece holder 2G is a small diameter, and becomes a connecting portion 29A for connecting the ink 20 filler (refer to FIGS. 15 and 16). Further, as shown in Fig. 15, the internal space from the rear end to the front end of the holder 20 is an ink guide hole π having a stepped inner diameter. The ink guide hole 27 and the bead chamber 23 are penetrated by an ink circulation hole 28A. In addition, radial ink 31 1238123 is formed at four places around the ink circulation hole 28A. The invention describes a guide groove 22A, so that the ink 5 and the guide hole 27 can communicate with the bead chamber 23. (2-2- 3) Bead chamber 23 The bead chamber 23 is a space provided at one end of the holding seat 20 for accommodating the beads 5 30, and has a cylindrical side wall with an inner diameter larger than the diameter of the bead 30 and a cylindrical side wall of Judah. 51. A conical bottom surface portion 52 having a vertex side opposite to the ball. (Refer to FIG. 14) In addition, an ink circulation hole 28A having a predetermined diameter (F) is provided on the rear end surface of the cymbal bead chamber 23, thereby communicating with the ink guide hole 27. In addition, four ink guide grooves 22A (refer to FIG. 17) communicating with the ink guide holes 27 are radially perforated around the ink flow holes 28A. In addition, on the bottom surface portion 52, a ball receiving seat 24 having a concave spherical shape having a curvature almost the same as the curvature of the ball 30 is formed. The ball receiving seat 24 supports the ball 30 by a rear end. In addition, the angle of the bottom surface portion 52 can be appropriately selected between 90 degrees and 170 degrees. (2-2-3) Converging portion 21 The converging portion 21 is formed by forming one end of the bead chamber 23 side of the holder 20 into a conical shape. 'The bead 3 is supported and stored in the bead chamber 23 by the front end side. And also used to prevent the ball 30 from jumping out of the ball room 23. The convergence portion 21 20 is provided at a front end portion of the tapered portion 25. The converging portion 21 is formed in a conical shape, and its inner diameter (H) is smaller than the diameter (D) of the ball 30 (see Fig. 14). The convergence portion 21 is formed after the ball 30 is accommodated in the bead chamber 23, and is formed by performing rolling processing at the end of the holding seat 20. The inner diameter η 32 of the convergence portion 21 is 1238123. The bead diameter D of the bead 30 is still small. Furthermore, a gate of the inner part of the π joint 21 is provided, and a minute gap is provided between the ball 30 and the inner part 51. Make one of the balls 30 / eight jj ^, 1,, stab wounds from the other-mentioned ball room 23 to the outside, and at the same time borrow the converging section 21 sentences 产 * 出外门 * 丨 Big out 'Achi can be free The r furnace turns 〇η ^ ^?, 々疋 at the front end of the holder 20, so that the adhered ink is drawn on the writing surface to draw a line. The gap (gap) becomes the path for the ink. Second smallest (2-2-4) cone 25 10

前述錐部25係用以於書寫時使固持座2()不接觸面之結構。曰”” a該錐部25係設置於歛合部21附近外周，接連於欽合部21 ’且係形成為由前端侧至後端側外徑逐漸增大之圓錐面狀。The aforementioned tapered portion 25 is used to prevent the holder 2 () from contacting the surface when writing. Said "a" The tapered portion 25 is provided on the outer periphery near the convergence portion 21, is connected to the joint portion 21 ', and is formed into a conical surface shape in which the outer diameter gradually increases from the front end side to the rear end side.

(2-2-5)墨水孔 40A 墨水孔40A係由前述圓珠室23之底面部52貫穿至固(2-2-5) Ink hole 40A The ink hole 40A is penetrated from the bottom surface portion 52 of the bead chamber 23 to the solid portion.

持座20另一端之孔，係用以供給墨水於收納於圓珠室u 之圓珠30。更詳而言之，於墨水孔40A係如第15圖所示，形成有墨水引導孔27、墨水流通孔28A及墨水引導溝22A。墨水引導孔27係設置於墨水孔40A之圓珠側，係較墨水孔40A之圓珠相反側直徑還小之孔，係用以導入並供給墨水於收納於圓珠室23之圓珠30者。該墨水引導孔27 形成固持座20之内部空間，如前述，係朝向前端側階段性地縮小内徑，並同時透過前述墨水流通孔28A及前述墨水 33 1238123 玖、發明說明引導溝22A與圓珠室23互通。即，係為了由墨水孔4〇a 之大直徑部份朝小直徑之圓珠室23内供給墨水，而逐漸縮小内徑，於孔内不易造成墨水堵塞。 - 再者，墨水引導孔27之與後述之墨水流通孔28A之 · 5連接ϋ卩伤，係成為朝向圓珠側縮小直捏呈錐狀之直徑縮小孔42Α。即，直徑縮小孔42Α之最小直徑係與墨水流通孔 28Α之内徑同一，最大徑則與墨水引導孔27之最小徑同一。且，該直徑縮小孔42Α之最大徑ρ係形成為〇 4mm以上鲁。當該尺寸於0.4mm以下時，會妨礙墨水由墨水引導孔27 1〇朝墨水流通孔28A流通，成為書寫時字模糊不清之原因。因此，直徑縮小孔42A之最大徑p宜形成為〇4mm以上。此外，該根據於後述。另外，該直徑縮小孔42A之錐角（直徑縮小孔錐角Q) 係形成為30度以上且小於90度。此係於前述直徑縮小孔 15 42A之與最大徑P之關係中，直徑縮小孔錐角Q於3〇度以下時必然需使直徑縮小孔42A之長度或墨水流通孔28α φ 之長度增長，容易對墨水之流通造成阻礙。另外，直徑縮 J孔錐角Q於9〇度以上時，必然需使直徑縮小孔“A之 · 長度縮短，因此，必需使墨水流通孔28A之長度增長或使 · 墨水弓I導孔27之端部朝圓珠側延長，前者之情況係容易對墨水之流通造成阻礙，後者之情況則會使固持座2〇之錐部 25部份之層厚減少，於加工時容易因拙曲造成加工不良口此直徑縮小孔錐角Q宜形成為30度以上且小於9〇度，而該根據於後述。 34 1238123 玖、發明說明墨水流通孔28A係設置於前述圓珠室23底面部52與前述直徑縮小孔42A之圓珠側端部之間之孔，係用以將由墨水引導孔27導入之墨水供給至圓珠室23内。墨水引導溝22A係由前述墨水流通孔28A中心設置為 5放射狀之狹縫，係用以將由墨水引導孔27導入之墨水充分地供給至圓珠室23内。墨水引導溝22A可按照墨水之特性等設置3條乃至6條（本實施形態係4條），溝寬可於〇·〇3乃至0.10mm之間適當選擇。此外，於圖示之實施形態中，前述墨水引導溝22A係 1〇由圓珠室23底面部52至墨水引導溝27貫穿而設置，然而，按照墨水之特性等亦可不貫穿而設置。 (2-2-6)圓珠 30 圓珠30係用以於書寫面塗布墨水者。該圓珠3G係使用超硬合金、不錄鋼材、硬化鋼、不鎮 15鋼或喊等形成為球形。且，於本實施形態中，圓珠川之直I D係形成於〇.29mm以下。便具由敛合部又’该圓珠30係收納於圓珠室朝固持座20外部僅突出預定圓珠突出尺寸⑼(參照第 20The hole at the other end of the holder 20 is used to supply ink to the bead 30 stored in the bead chamber u. More specifically, the ink hole 40A is formed with an ink guide hole 27, an ink circulation hole 28A, and an ink guide groove 22A as shown in Fig. 15. The ink guide hole 27 is provided on the bead side of the ink hole 40A, and is a hole having a smaller diameter than the opposite side of the ball of the ink hole 40A. It is used to introduce and supply ink to the bead 30 stored in the bead chamber 23. . The ink guide hole 27 forms the internal space of the holding seat 20. As described above, the inner diameter is gradually reduced toward the front end side, and simultaneously passes through the ink circulation hole 28A and the ink 33 1238123. The invention description guide groove 22A and the ball. The chamber 23 communicates. That is, in order to supply ink from the large-diameter portion of the ink hole 40a to the small-diameter bead chamber 23, the inner diameter is gradually reduced, so that the ink is not easily clogged in the hole. -In addition, the ink guide hole 27 is connected to the ink flow hole 28A to be described later, and is cut into a diameter-reducing hole 42A that is reduced toward the ball side and is pinched and tapered. That is, the minimum diameter of the reduced diameter hole 42A is the same as the inner diameter of the ink circulation hole 28A, and the maximum diameter is the same as the minimum diameter of the ink guide hole 27. The maximum diameter ρ of the reduced-diameter hole 42A is formed to be 0.4 mm or more. When the size is less than 0.4 mm, the ink is prevented from flowing from the ink guide hole 27 10 to the ink circulation hole 28A, which may cause the characters to be blurred when writing. Therefore, the maximum diameter p of the diameter-reducing hole 42A is preferably set to be 0.4 mm or more. This basis is described later. In addition, the taper angle (taper angle Q of the reduced-diameter hole) of the reduced-diameter hole 42A is formed to be 30 degrees or more and less than 90 degrees. This is in the relationship between the diameter reduction hole 15 42A and the maximum diameter P. When the cone diameter Q of the diameter reduction hole is less than 30 degrees, it is necessary to increase the length of the diameter reduction hole 42A or the length of the ink circulation hole 28α φ, which is easy. Impede the flow of ink. In addition, when the taper angle Q of the diameter-reduced hole J is more than 90 degrees, the diameter-reduced hole "A" must be shortened. Therefore, it is necessary to increase the length of the ink circulation hole 28A or the ink bow I guide hole 27. The end is extended toward the bead side. In the former case, it is easy to hinder the flow of ink. In the latter case, the layer thickness of the 25 part of the cone portion of the holding seat 20 is reduced, and it is easy to cause processing due to buckling during processing. Defective opening The taper angle Q of the reduced-diameter hole should be formed to be 30 degrees or more and less than 90 degrees, and this will be described later. 34 1238123 玖 Description of the invention The ink circulation hole 28A is provided in the bottom surface portion 52 of the aforementioned ball chamber 23 and the aforementioned The hole between the bead-side ends of the reduced-diameter hole 42A is used to supply the ink introduced through the ink guide hole 27 into the bead chamber 23. The ink guide groove 22A is set to 5 radiation from the center of the aforementioned ink circulation hole 28A. The slits are used to sufficiently supply the ink introduced through the ink guide holes 27 into the bead chamber 23. The ink guide grooves 22A can be provided with three or even six according to the characteristics of the ink (four in this embodiment) The groove width can be less than 0.03 In addition, in the illustrated embodiment, the ink guide groove 22A is formed from the bottom surface portion 52 of the bead chamber 23 to the ink guide groove 27. However, it is based on the characteristics of the ink and the like. It can also be installed without penetrating. (2-2-6) Ball 30 Ball 30 is used to apply ink to the writing surface. The ball 3G is made of super hard alloy, non-recorded steel, hardened steel, and ballast 15 steel. Or shouts are formed into a spherical shape. In this embodiment, the straight ID system of the Bead River is formed below 0.29 mm. The bead 30 is stored in the bead chamber toward the holding seat 20 from the convergence portion. The projected size is only projected from the outside ⑼ (see page 20)

圖）°且’ It斂合部21與圓珠承接座24支轉，以固持於持座20前端側而可自由旋轉。、此外’藉使圓珠30形成為具有與紙面產生適度摩拷抗之表面粗糙，以於書寫時在圓珠室23内旋轉 40A引入墨水而可塗布於紙面。土又，圓珠3〇與歛合部21之間設置有稱作縫隙26之 35 1238123 玖、發明說明小間隙（參照第14圖）。該縫隙26係成為於書寫時黑水之通路。且，隨著圓珠30旋轉，墨水由圓珠3〇與斂合部21之間吐出，且同時黏著於圓珠30表面之墨水描繪於書寫面， 5 藉此於書寫面畫出線條。 (2-3)圓珠筆筆尖1〇之製造方法接著，針對本實施形態之圓珠筆筆尖1〇之製造方法作說明。首先，藉切削刀將加工前之圓柱形固持座2〇之外周切 1〇削為小直徑，形成接連部29A(參照第18圖）。然後，依序實施以下步驟。 (2-3-1)墨水引導孔27形成步驟由固持座20後端，最初以大直徑之錯頭切削至一半。然後，由此朝向前端，經過數階段地依序縮小鑽頭之直徑 15而切削至前端附近，形成墨水引導孔27(參照第18圖）。 (2-3-2)錐部25形成步驟由固持座20前端至預定距離，使用錐狀之切削刀切削成圓錐狀，形成錐部25(參照第19圖）。 (2-3-3)中心孔28a步驟《口持座20如端’為了將用以加工墨水流通孔％ a 之鑽碩引導至中心，使用中心孔工具加工圓錐狀之中心孔 28<參照第20圖）。 (2-3-4)墨水流通孔28A形成步驟乂月il述中心孔28a之中心為目標，使用鑽頭於其與墨 1238123 玖、發明說明水引導孔27之間貫穿預定尺寸内郎，然而〇靖犯 0-6)之墨水流通孔28A(參照第21圖）。 (2-3-5)完成步驟 - 使用鑽頭切削前述錐部25前端内周面為預定尺寸之内 . 5 徑（M，然而μ > D)。藉該步驟，錐部25前端之内部空間成為圓珠室^，又，其後端面成為圓珠承接座24(參照第22圖）。 (2-3-6)切溝步驟 g 由前述圓珠承接座24前端朝墨水流通孔28A周圍， ίο***切槽工具並貫穿至墨水引導孔27以切削4條放射狀之溝。該等溝成為墨水引導溝22A(參照第23圖）。 (2-3-7)敲打步驟朝前述圓珠室23***圓珠30後，藉將前述圓珠如上部朝後端方向按壓，使圓珠承接座24沿圓珠3〇外形變形（ 15參照第24圖）。該步驟係用以使圓珠承接座24之耐磨損性提升，並同時使圓珠30與圓珠承接座24之接觸面積增廣 · 而實行的。 (2-3-8)斂合步驟 · 斂合步驟係於***圓珠3〇於圓珠室23後，於錐部25 · 20 端部設置傲合部21之步驟。具體而言，於前述敲打步驟後，於錐部25前端使用錐狀之輥施行斂合加工而設置斂合部21，以形成圓珠筆筆尖 10(參照第14圖及第15圖）。然而，該斂合加工之變形量，係形成為使前述圓珠突出尺寸〇、前述圓珠直徑D及前 37 1238123 玖、發明說明述斂合部前端内徑Η滿足G/D-0.25且0.005 SD —H S 0.010mm之程度。【實施例】以下，一面將本發明實施例與比較例相對照一面作說 5 明，然而，本發明不受限於此。 (1)圓珠直徑與内方突起内接圓直徑、圓珠突出尺寸及斂合部前端内徑之關係（其1)(Picture) ° 'It's converging portion 21 and the ball receiving seat 24 are pivoted to be held on the front end side of the holding seat 20 and can rotate freely. In addition, if the ball 30 is formed to have a rough surface with moderate friction resistance against the paper surface, it can be applied to the paper surface by rotating the ink in the ball chamber 23 by 40A during writing. In addition, between the ball 30 and the converging portion 21, there is a gap 12 35123 38123, which is a small gap (see FIG. 14). The slit 26 is a passage for black water during writing. And, as the ball 30 rotates, ink is ejected between the ball 30 and the convergence portion 21, and at the same time, the ink adhered to the surface of the ball 30 is drawn on the writing surface, 5 thereby drawing a line on the writing surface. (2-3) Manufacturing method of ballpoint pen tip 10 Next, a manufacturing method of the ballpoint pen tip 10 of this embodiment will be described. First, the outer periphery of the cylindrical retaining seat 20 before machining is cut to a small diameter by a cutter to form a continuous portion 29A (see FIG. 18). Then, perform the following steps in order. (2-3-1) Forming step of ink guide hole 27 From the rear end of the holder 20, it is initially cut to half with an offset of a large diameter. Then, toward the front end, the diameter of the drill bit 15 is sequentially reduced in several steps and cut to the vicinity of the front end to form an ink guide hole 27 (see FIG. 18). (2-3-2) Step of forming the tapered portion 25 The tapered portion 25 is formed by cutting from the front end of the holder 20 to a predetermined distance using a tapered cutter to form a tapered portion (see FIG. 19). (2-3-3) Step 28a of the center hole "The mouthpiece holder 20 is at the end" In order to guide the drill for processing the ink circulation hole% a to the center, use the center hole tool to process the conical center hole 28 < Figure 20). (2-3-4) Step of forming ink circulation hole 28A: The center of the center hole 28a is described as a target, and a drill is used to pass through a predetermined size between the ink 1238123 and the water guide hole 27 of the invention, but Jingan 0-6) ink circulation hole 28A (refer to Figure 21). (2-3-5) Completion steps-Use a drill to cut the inner peripheral surface of the front end of the tapered portion 25 within a predetermined size. 5 diameter (M, but μ > D). By this step, the internal space at the front end of the tapered portion 25 becomes a ball chamber ^, and the rear end surface thereof becomes a ball receiving seat 24 (see FIG. 22). (2-3-6) Grooving step g Insert the grooving tool through the ink guide hole 27 from the front end of the aforementioned ball receiving base 24 toward the ink circulation hole 28A to cut four radial grooves. These grooves become ink guide grooves 22A (see FIG. 23). (2-3-7) After the ball 30 is inserted into the ball chamber 23 in the tapping step, the ball receiving seat 24 is deformed along the shape of the ball 30 by pressing the ball toward the rear end as the upper part (see 15 for reference) (Figure 24). This step is performed to improve the abrasion resistance of the ball receiving seat 24 and to increase the contact area between the ball 30 and the ball receiving seat 24 at the same time. (2-3-8) Convergent Step The convergent step is a step of inserting the ball 30 into the bead chamber 23, and then providing the convergent portion 21 at the end of the cone portion 25 · 20. Specifically, after the aforementioned tapping step, a converging portion 21 is provided at the front end of the conical portion 25 using a conical roller to form a converging portion 21 to form a ballpoint pen tip 10 (see Figs. 14 and 15). However, the deformation amount of the convergence processing is formed so that the aforementioned ball protrudes to a size of 0, the aforementioned diameter of the ball D and the front 37 1238123 玖, the description of the front end inner diameter 敛 of the convergence section satisfies G / D-0.25 and 0.005 SD —HS is about 0.010mm. [Examples] Hereinafter, examples of the present invention will be described in comparison with comparative examples, but the present invention is not limited thereto. (1) The relationship between the diameter of the ball and the diameter of the inscribed circle of the inner protrusion, the protruding size of the ball, and the inner diameter of the front end of the convergence part (Part 1)

(1-1)實施例及比較例實施例與比較例所使用之圓珠30皆為超硬合金製，且 10 圓珠直徑（D)為0.28mm。固持座20係使用SUS316L製，外徑0.6mm，内徑 0.3mm且長度8mm之金屬細管為材料。於下述表1顯示分別於各實施例及各比較例中之D、 F/D、G/D、及（D —H)(然而，F為内方突起22内接圓之直 15 徑（mm)，G係圓珠突出尺寸（mm)，且Η為斂合部前端内徑(1-1) Examples and Comparative Examples The balls 30 used in the examples and comparative examples are made of cemented carbide, and the diameter (D) of the 10 balls is 0.28 mm. The holder 20 is a thin metal tube made of SUS316L with an outer diameter of 0.6mm, an inner diameter of 0.3mm and a length of 8mm. The following Table 1 shows D, F / D, G / D, and (D-H) in each of the examples and comparative examples (however, F is the straight 15 diameter of the inscribed circle of the inner protrusion 22 ( mm), G series ball protruding size (mm), and Η is the inner diameter of the front end of the convergence part

(mm))之值。【表1】 D F/D G/D D-H (mm) (mm) 實施例1 0.28 0.43 0.43 0.003 實施例2 0.28 0.43 0.23 0.013 實施例3 0.28 0.29 0.35 0.005 實施例4 0.28 0.64 0.35 0.005 實施例5 0.28 0.43 0.35 0.005 38 1238123 玖、發明說明實施例6 0.28 0.50 0.35 0.005 ^ 實施例7 0.28 0.57 0.35 0.005 _ 實施例8 0.28 0.43 0.32 0.008 ^ 實施例9 0.28 0.50 0.32 0.008 ^ 實施例10 0.28 0.57 0.32 0.008 _ 實施例11 0.28 0.43 0.28 0.010 比較例1 0.28 0.29 0.43 0.003 ^ 比較例2 0.28 0.64 0.43 0.003 ^ 比較例3 0.28 0.29 0.23 0.013 比較例4 0.28 0.64 0.23 0.013 此外，於以下說明中，將前述表1内之值中，於第2 列顯示之F/D值為0.4以上且〇·6以下稱作「第丨條件」。又，同表内之值中，於第3列顯示之G/D值為0.25以上，且於第4列顯示之（D — H)值為〇〇〇5以上且〇〇1〇以下稱 5作「第2條件」。即，由實施例i、2及5至^滿足第i條件。又，由實施例3至Π滿足第2條件。但是，比較例i 至4皆不滿足第1條件及第2條件任一。各實施例及各比較例之圓珠筆筆尖1〇，如第u圖所不，係結合於與市售之圓珠筆4〇(UM-151，三菱斜筆股份 10有限公司）使用之相同筆體内，而供書寫。又，於該圓珠筆40之墨水收容管44中，充填有具有下述表2所顯示之成分之假塑性水性墨水，以供書寫。【表2】 39 1238123 玖、發明說明成分重量％碳煙粉 7.0 _ 笨乙烯丙烯酸椒胺基 3.0 _ 乙二醇 20.0 鉀皂（潤滑劑） 0.4 — 1:2-苯並異噻唑酮酸 (benzisothiazolonic acid)(防腐劑） 0.2 氨基甲基丙醇（Ph調整劑） 0.3 苯並***類（防銹劑） 0.2 聚丙烯酸鹽（丙烯系合成高分子） 0.1 離子交換水 68.8 (1-2)試驗項目(mm)). [Table 1] DF / DG / D DH (mm) (mm) Example 1 0.28 0.43 0.43 0.003 Example 2 0.28 0.43 0.23 0.013 Example 3 0.28 0.29 0.35 0.005 Example 4 0.28 0.64 0.35 0.005 Example 5 0.28 0.43 0.35 0.005 38 1238123 发明 Description of the invention Example 6 0.28 0.50 0.35 0.005 ^ Example 7 0.28 0.57 0.35 0.005 _ Example 8 0.28 0.43 0.32 0.008 ^ Example 9 0.28 0.50 0.32 0.008 ^ Example 10 0.28 0.57 0.32 0.008 _ Example 11 0.28 0.43 0.28 0.010 Comparative Example 1 0.28 0.29 0.43 0.003 ^ Comparative Example 2 0.28 0.64 0.43 0.003 ^ Comparative Example 3 0.28 0.29 0.23 0.013 Comparative Example 4 0.28 0.64 0.23 0.013 In addition, in the following description, the values in Table 1 above, The F / D value displayed in the second column is 0.4 or more and 0.6 or less is referred to as "the first condition". Also, among the values in the same table, the G / D value shown in the third column is 0.25 or more, and the (D-H) value shown in the fourth column is not less than 0.0005 and not more than 0.001. Make "the second condition". That is, conditions i, 2 and 5 to ^ satisfy the i-th condition. In addition, the second condition is satisfied from Examples 3 to Π. However, none of Comparative Examples i to 4 satisfies either the first condition or the second condition. The ballpoint pen tip 10 of each embodiment and each comparative example, as shown in Fig. U, is incorporated into the same pen body used in the commercially available ballpoint pen 40 (UM-151, Mitsubishi Oblique Pen Co., Ltd.) And for writing. The ink containing tube 44 of the ball-point pen 40 is filled with a pseudoplastic water-based ink having a composition shown in Table 2 below for writing. [Table 2] 39 1238123 发明,% by weight of the ingredients of the invention, soot powder 7.0 _ stupid vinyl acrylamine 3.0 _ ethylene glycol 20.0 potassium soap (lubricant) 0.4 — 1: 2-benzisothiazolonic acid (benzisothiazolonic acid) (Preservative) 0.2 Aminomethylpropanol (Ph regulator) 0.3 Benzotriazole (rust inhibitor) 0.2 Polyacrylate (propylene-based synthetic polymer) 0.1 Ion exchange water 68.8 (1-2) test project

針對前述各實施例及各比較例，實施下述①至④之試驗，且分別依下述作評價。 ①不順暢感 5 使用分別結合有實施例及比較例之圓珠筆筆尖1〇之圓珠筆40，藉檢查人實際書寫之官能試驗來評價伴隨於書寫之不順暢感。具體而言，分別將檢查人完全沒感覺到不順暢感者評價為「AA」，於書寫時有感覺到不構成障礙程度之不順暢感者評價為「A」，於書寫時感到有 10 些許困難程度之不順暢感者評價為「b」，及，於蚩寫日士感到有顯著障礙程度之不順暢感者評價為「c 。 '、 40 1238123 玖、發明說明 ②固持座變形使用依據ISO規格14145-1之書寫試驗器，以書寫速度4.5m/分、書寫角度6〇。、及書寫負荷〇 98N(i〇〇g重 )之條件，辨識進行600m書寫後之固持座2〇之變形以評饧口曰寫4成之固持座變形。具體而言，分別將幾乎不變形者評價為「A」，可觀察到稍微變形者為「B」，及可看到顯著變形者為rc」。 ③圓珠固持力For each of the foregoing examples and comparative examples, the following tests ① to ④ were performed, and the evaluations were performed as described below. ① Unsmoothness 5 A ball-point pen 40 incorporating a ball-point pen tip 10 of an example and a comparative example was used to evaluate the unsmoothness accompanying the writing by a functional test of the examiner's actual writing. Specifically, the examiners were evaluated as "AA" if they did not feel any sense of inconvenience, and "A" was evaluated as "A" when they felt that they did not constitute a degree of obstacles when writing. A person with a degree of difficulty in the degree of difficulty is evaluated as "b", and a person with a degree of difficulty in noting a significant degree of difficulty in writing the Japanese is evaluated as "c.", 40 1238123 玖, Description of the invention ② The deformation of the holder is based on ISO The writing tester of specification 14145-1 recognizes the deformation of the holder 20 after writing at 600m under the conditions of a writing speed of 4.5m / min, a writing angle of 60 °, and a writing load of 098N (100g weight). According to the commentary, 40% of the deformation of the holder is written. Specifically, the person who is hardly deformed is evaluated as "A", the person who is slightly deformed is observed as "B", and the person who notices significant deformation is rc " . ③ Ball holding force

10 因書寫造成之圓珠固持力之變化，分別將幾乎看不到斂合部21鬆動者評價為「A」，斂合部21有鬆動但仍 “、、口持圓珠30者為「B」，及，因敛合部21鬆動造成圓珠30脫落者為「〇」。 ④圓珠沉陷 15 _ _ ---，於以珂述②同樣< 件進行書寫後，利用測量圓珠突出尺寸之減少來作麥 ’、體。之’分別將圓珠突出尺寸之減少小於μ㈣評價為「A」，25 um u μ π 1 # μπι以上且小於35μιη者為「Β」，石 35μηι以上者為rc」。10 The change in the holding force of the ball caused by writing is evaluated as "A", where the loosening of the convergence portion 21 is hardly visible, and the looseness of the convergence portion 21 is still "," and the person holding the ball 30 in the mouth is "B." ", And the case where the ball 30 falls off due to the loosening of the convergence portion 21 is" 0 ". ④Bead subsidence 15 _ _ ---, Yu Yushu ② After writing the same < It ’s evaluated that the reduction in the protruding size of the beads is less than μ㈣, which is “A”, 25 um u μ π 1 # μπι or more and less than 35 μιη is “B”, and stone ≥ 35 μηι is rc ”.

20 此外，實際上，對於前述評價項目至11及由比較例1至4中皆無評價為 (1-3)第1條件之檢討，由前述實施例「C」者。以下’將圓珠筆筆尖1G滿足第1條件之效果，分別於不滿足第2條件之情況與滿足之情況下作檢討。 (1 一3-1)不滿足第2條件之情況 41 1238123 玖、發明說明如下述表3所示，實施例1與比較例1及比較例2 之G/D值共通，然而卻皆不滿足第2條件。且，相對於貫施例1滿足第1條件，比較例1及比較例2皆不滿足第1條件。 5【表3】20 In addition, in fact, none of the foregoing evaluation items to 11 and Comparative Examples 1 to 4 were evaluated as (1-3) the first condition, and those in the foregoing example "C". In the following, the effect that the ballpoint pen tip 1G meets the first condition will be reviewed separately from the case where the second condition is not satisfied and the case where it is satisfied. (1-3-1) Cases where the second condition is not satisfied 41 1238123 玖 The description of the invention is shown in Table 3 below. The G / D values of Example 1 and Comparative Example 1 and Comparative Example 2 are common, but they are not satisfied The second condition. In addition, with respect to the first example, the first condition was satisfied, and neither of the comparative example 1 and the second example satisfied the first condition. 5 [Table 3]

F/D G/D D-H ① ② ③ ④ 實施例1 0.43 0.43 0.003 A A B A 比較例1 0.29 0.43 0.003 A B B A 比較例2 0.64 0.43 0.003 A A B BF / D G / D D-H ① ② ③ ④ Example 1 0.43 0.43 0.003 A A B A Comparative Example 1 0.29 0.43 0.003 A B B A Comparative Example 2 0.64 0.43 0.003 A A B B

由前述表3之結果，不滿足第2條件而滿足第1條件之實施例1，相對於皆不滿足第丨條件與第2條件之比較例1，於固持座變形（②）之項目中評價為優良。又，相對於皆不滿足第1條件及第2條件之比較例2，於圓 10 珠沉陷（④）之項目中評價為優良。From the results of the foregoing Table 3, Example 1 which did not satisfy the second condition and fulfilled the first condition was evaluated in the item of deformation of the holder (②), as compared with Comparative Example 1 where neither of the conditions 丨 and 2 was satisfied. As excellent. Moreover, compared with Comparative Example 2 in which neither the first condition nor the second condition was satisfied, it was evaluated as excellent in the item of the round 10-bead subsidence (④).

另外，如下述表4所示，實施例2與比較例3芩比較例4之G/D值共通，然而皆不滿足第2條件，且，相對於實施例2滿足第1條件，比較例3與比較例*不滿足第1條件。 15【表4】 F/D G/D D-H ① (2) ③ ④ J施例2 0.43 0.23 0.013 B A A A 比較例3 0.29 0.23 0.013 B B A A 比較例4 0.64 0.23 0.013 B A A B 由前述表4之結果，不滿足第2條件而滿足第1條 42 1238123 玖、發明說明件之實施例2 ’相對於皆不滿足第1條件及第2條件之比較例3，於固持座變形（②）之項目中評價為優良。又，相對於皆不滿足第1條件及第2條件之比較例4，於圓珠沉陷（④）之項目中評價為優良。 5 10 即，使圓珠筆筆尖10之G/D值及（D — H)值之條件相同，且不滿足第2條件之情況下，滿足第1條件時係較不滿足第1條件時可清楚看到性能之提昇。In addition, as shown in Table 4 below, the G / D values of Example 2 and Comparative Example 3 and Comparative Example 4 are common, but none of them satisfies the second condition, and, compared with Example 2, the first condition is satisfied, and Comparative Example 3 And Comparative Example * does not satisfy the first condition. 15 [Table 4] F / DG / D DH ① (2) ③ ④ J Example 2 0.43 0.23 0.013 BAAA Comparative Example 3 0.29 0.23 0.013 BBAA Comparative Example 4 0.64 0.23 0.013 BAAB According to the results in Table 4 above, it does not satisfy the second Conditions that satisfy Article 1 42 1238123 (ii) Example 2 of the invention description. Compared to Comparative Example 3, which did not satisfy both the first and second conditions, it was evaluated as excellent in the item of deformation of the holder (②). In addition, compared with Comparative Example 4 in which neither the first condition nor the second condition was satisfied, it was evaluated as excellent in the item of the ball subsidence (④). 5 10 That is, if the conditions of the G / D value and the (D-H) value of the ballpoint pen tip 10 are the same, and the second condition is not satisfied, the first condition can be clearly seen when the first condition is not satisfied. To performance improvement.

(1-3-2)滿足第2條件時如下述表5所示，實施例5、實施例6及實施例7 與實施例3及實施例4之G/D值及（D—H)值共通，且皆滿足第2條件。且，相對於實施例5、實施例6及實施例7皆滿足第1條件，實施例3及實施例4皆不滿足第 1條件。【表5】(1-3-2) When the second condition is satisfied, as shown in Table 5 below, the G / D values and (D-H) values of Example 5, Example 6 and Example 7 and Example 3 and Example 4 It is common, and both satisfy the second condition. In addition, with respect to Example 5, Example 6, and Example 7 all satisfy the first condition, and Examples 3 and 4 do not satisfy the first condition. 【table 5】

由前述表5之結果，滿足第2條件且滿足第丨條件之貫施例5、實施例6及實施例7，相對於滿足第2條件From the results of the foregoing Table 5, the fifth, sixth, and seventh examples satisfying the second condition and satisfying the first condition are in contrast to satisfying the second condition.

而不滿足第1條件之實施例3，皆於固持座變形（②）之項目中评價為優良，又，不順暢感(①)之項目之評價亦提 43 15 1238123 玖、發明說明昇。再者，滿足第2條件且滿足第1條件之實施例$、實施例6及實施例7，相對於滿足第2條件而不滿足第！條件之實施例4，皆於圓珠沉陷（④）之項目中評價為優良，又，於不順暢感（①）之項目中之評價亦提昇。 5 即，於G/D值及①一 H)值之條件相同，且，滿足第 2條件之情況下，滿足第1條件時係較不滿足第丨條件時可清楚看到圓珠筆筆尖10性能之提昇。此外，如下述表6所示，即使於滿足第2條件之範圍内改變了 G/D值及（D—H)值，滿足第1條件範圍内之 10 實施例8至實施例10之評價亦一樣良好。【表6】Example 3, which did not satisfy the first condition, was evaluated as excellent in the item of deformation of the retaining seat (②), and the evaluation of the item with a sense of unsmoothness (①) was also mentioned 43 15 1238123 发明, description of the invention. In addition, the examples $, 6 and 7 which satisfy the second condition and satisfy the first condition are more important than the second condition which is not satisfied! Example 4 of the condition was evaluated as excellent in the items where the bead subsided (④), and the evaluation was also improved in the items with a sense of instability (①). 5 That is, the conditions of G / D value and ①-H) value are the same, and when the second condition is satisfied, the performance of the ballpoint pen tip 10 can be clearly seen when the first condition is satisfied when the first condition is not satisfied. Promotion. In addition, as shown in Table 6 below, even if the G / D value and the (D-H) value are changed within the range satisfying the second condition, the evaluations of Example 8 to Example 10 within the range of the first condition are also satisfied. Just as good. [Table 6]

F/D G/D D-H ① ② ③ ④ 實施例8 0.43 0.32 0.008 A A A A 實施例9 0.50 0.32 0.008 A A A A 實施例10 0.57 0.32 0.008 A A A A (1-1-3)第1條件之效果由前述（1-3-1)及（1-3-2)之結果可清楚明白，不管第 2條件，當F/D值低於第1條件之下限（0.4)時（表3之比較例1、表4之比較例3、與表5之實施例3)，固持座變形增大。又，不管第2條件’ F/D值高於第1條件之上限（0·6)時（表3之比較例2、表4之比較例4、表5之實施例4)，圓珠沉陷增大。即，第1條件由固持座變形及圓珠沉陷之觀點看來可以說是F/D值之適當範圍。 20F / DG / D DH ① ② ③ ④ Example 8 0.43 0.32 0.008 AAAA Example 9 0.50 0.32 0.008 AAAA Example 10 0.57 0.32 0.008 AAAA (1-1-3) The effect of the first condition is as described above (1-3- The results of 1) and (1-3-2) are clear. Regardless of the second condition, when the F / D value is lower than the lower limit (0.4) of the first condition (Comparative Example of Table 3, Comparative Example of Table 4) 3. As in Example 3) of Table 5, the deformation of the holder is increased. When the F / D value of the second condition is higher than the upper limit (0 · 6) of the first condition (Comparative Example 2 in Table 3, Comparative Example 4 in Table 4, and Example 4 in Table 5), the ball sinks. Increase. That is, the first condition can be said to be an appropriate range of F / D values from the viewpoints of deformation of the holder and sinking of the beads. 20

(1-4)第2條件之檢討 44 1238123 玖、發明說明以下，將圓珠筆筆尖10滿足第2條件時之效果，分為不滿足第1條件與滿足第i條件來作檢討。 (1-4-1)不滿足第1條件時如下述表7所示，實施例3與比較例丨及比較例3 之F/D值/、通，但皆不滿足第1條件。且，相對於實施例3滿足第2條件，比較例！及比較例3不滿足第2條件。(1-4) Review of the second condition 44 1238123 发明. Description of the invention In the following, the effect when the ballpoint pen tip 10 satisfies the second condition is divided into whether the first condition is not satisfied and the i condition is satisfied for review. (1-4-1) When the first condition is not satisfied As shown in Table 7 below, the F / D values of Example 3 and Comparative Example 丨 and Comparative Example 3 are equal, but none of them satisfy the first condition. In addition, the second condition is satisfied with respect to Example 3, a comparative example! And Comparative Example 3 did not satisfy the second condition.

【表7】[Table 7]

F/D G/D D— Η ① ② ③ ④ 實施例3 0.29 0.35 0.005 A B A A 比較例1 0.29 0.43 0.003 A B B A 比較例3 0.29 0.23 0.013 B B A AF / D G / D D— Η ① ② ③ ④ Example 3 0.29 0.35 0.005 A B A A Comparative Example 1 0.29 0.43 0.003 A B B A Comparative Example 3 0.29 0.23 0.013 B B A A

由前述表7之結果，不滿足第1條件而滿足第2條 10 件之實施例3，相對於皆不滿足第1條件及第2條件之比較例1，於圓珠固持力（③）之項目中評價為優良。又，相對於皆不滿足第丨條件及第2條件之比較例3，於不順暢感（①）之項目中評價為優良。另外’如下述表8所示，實施例4與比較例2及比 15 較例4之F/D值共通，但皆不滿足第1條件。且，相對於實施例4滿足第2條件，比較例2及比較例4不滿足第2條件。【表8】From the results in Table 7 above, Example 3 which did not satisfy the first condition and 10 of Article 2 was compared with Comparative Example 1 where neither of the first condition and the second condition was satisfied. It was evaluated as excellent in the project. In addition, Comparative Example 3, which neither satisfied the first condition and the second condition, was evaluated as excellent in the item with a sense of unsmoothness (①). In addition, as shown in Table 8 below, the F / D values of Example 4 are the same as those of Comparative Example 2 and Comparative Example 4, but neither of them satisfies the first condition. In addition, compared with Example 4, the second condition was satisfied, and Comparative Example 2 and Comparative Example 4 did not satisfy the second condition. [Table 8]

F/D G/D D— H ① ② ③ 實施例4 0.64 0.35 0.005 A A A B 45 1238123F / D G / D D— H ① ② ③ Example 4 0.64 0.35 0.005 A A A B 45 1238123

件之實施例4，相對於皆不滿足第丨條件及第2條件之比較例2，於圓珠固持力（③）之項目中評價為優良。又，相對於皆不滿足第1條件及第2條件之比較例4，於不 5 順暢感（①）之項目中評價為優良。即’圓珠筆筆尖10於F/D值之條件相同，且，不滿足第1條件之情況下，滿足第2條件時係較不滿足第 2條件時可清楚看到性能之提昇。 (1-4-2)滿足第1條件時 10Example 4 of the present invention was evaluated as excellent in the item of the bead holding force (③), as compared with Comparative Example 2 in which neither the first condition nor the second condition was satisfied. Moreover, compared with Comparative Example 4 in which neither of the first condition and the second condition was satisfied, it was evaluated as excellent in the items that did not feel smooth (①). That is, the condition of the F / D value of the ballpoint pen tip 10 is the same, and if the first condition is not satisfied, the performance improvement can be clearly seen when the second condition is satisfied when the second condition is not satisfied. (1-4-2) When the first condition is satisfied 10

如下述表9所示，實施例5、實施例8及實施例i i 與實施例1及實施例2，F/D值共通且皆滿足第丨條件。且，相對於實施例5、實施例8及實施例U皆滿足第2 條件，實施例1及實施例2皆不滿足第2條件。【表9】 ^ F/D G/D D— Η ① (?) ③ ④ 5 0.43 0.35 0.005 ΑΑ A A A 8 0.43 0.32 0.008 A A A A 11 0.43 0.28 0.010 A A A A .__左施例1 0.43 0.43 0.003 A A B A 2 0.43 0.23 0.013 B A A A 由前述表9之結果，滿足第1條件且滿足第2條件之實施例5、實施例8及實施例11，相對於滿足第丨條As shown in Table 9 below, the F / D values of Example 5, Example 8 and Example i i are the same as those of Example 1 and Example 2 and all satisfy the first condition. In addition, with respect to Example 5, Example 8, and Example U, all satisfy the second condition, and both Example 1 and Example 2 do not satisfy the second condition. [Table 9] ^ F / DG / DD— Η ① (?) ③ ④ 5 0.43 0.35 0.005 ΑΑ AAA 8 0.43 0.32 0.008 AAAA 11 0.43 0.28 0.010 AAAA .__ Left Example 1 0.43 0.43 0.003 AABA 2 0.43 0.23 0.013 BAAA From the results of the aforementioned Table 9, Example 5, Example 8 and Example 11 satisfying the first condition and satisfying the second condition are compared with satisfying Article 丨

46 15 1238123 玖、發明說明件而不滿足第2條件之實施例i，皆於圓珠固持力（③）之項目中評價為優良。再者，滿足第工條件且滿足第2條 · 件之實施例5、實施例8及實施例u，相對於滿足第1 . 條件但不滿足第2條件之實施例2，皆於不順暢感（①）之 · 5 項目中評價為優良。即，F/D之條件相同，且，滿足第i條件之情況下 ’滿足第2條件時係較不滿足第2條件時可清處看到圓珠筆筆尖10性能之提昇。春 (1-4-3)第2條件之效果 ίο 由前述（1-4-1)及d-4—2)之結果可清楚明白，不管第 1條件，當G/D值低於第2條件之下限（0·25),且，（D一 Η)值高於第2條件之上限（0.01〇111111)時（表7之比較例3、表8之比較例4、與表9之實施例2)，不順暢感增大。又，不管第1條件，當G/D值滿足第2條件但（D—印值 15 低於第2條件之下限（0.005mm)時（表7之比較例i、表8 之比較例2、與表9之實施例1)，圓珠固持力降低。即 · ，第2條件由不順暢感及圓珠固持力之觀點看來，可以說是G/D值及（D —H)值之適當範圍。 (1-5)評價之匯總 ’ 20 如前述’即使僅滿足第1條件及第2條件任一者時，亦較皆不滿足這些條件時，可清楚看到圓珠筆筆尖性能之提昇（表3、表4、表7、表8)。再者，皆滿足第1條件及第2條件時，當然較皆不滿足這些條件時，且較僅滿足這些條件任一者時，還可 47 1238123 玖、發明說明清楚看到圓珠筆筆尖10性能之提昇（表5、表9)。即，前述F/D值範圍之適當化與G/D值及（D—H)值範圍之適當化，係可分別從旁協助圓珠筆筆尖10性能之提昇，且同時當這些相輔相成而適當化時，可更提昇圓 5 珠筆筆尖10之性能。 (2)圓珠直徑與内方突起内接圓直徑、圓珠突出尺寸及歛合部前端内徑之關係（其2)46 15 1238123 (ii) Example i of the invention which does not satisfy the second condition is evaluated as excellent in the item of the ball holding force (③). In addition, Example 5, Example 8, and Example u that satisfy the second working condition and meet the second condition are relatively uncomfortable compared to Example 2 that satisfies the first condition but does not satisfy the second condition. (①) of · 5 The project was evaluated as excellent. That is, the conditions of F / D are the same, and when the i-th condition is satisfied, when the second condition is satisfied, the performance of the ballpoint pen tip 10 can be seen clearly when the second condition is not satisfied. The effect of the second condition of spring (1-4-3) ίο From the results of (1-4-1) and d-4-2) above, it is clear that regardless of the first condition, when the G / D value is lower than the second When the lower limit of the condition is (0 · 25), and the value of (D-1) is higher than the upper limit of the second condition (0.01〇111111) (Comparative Example 3 of Table 7, Comparative Example 4 of Table 8, and Implementation of Table 9) Example 2), the uncomfortable feeling increases. Regardless of the first condition, when the G / D value satisfies the second condition but (D-print value 15 is lower than the lower limit of the second condition (0.005mm) (Comparative Example i in Table 7, Comparative Example 2 in Table 8, As in Example 1 of Table 9, the ball holding force is reduced. That is, the second condition can be said to be the value of the G / D value and the (D-H) value from the viewpoint of the feeling of irregularity and the ball holding force. Appropriate range. (1-5) Evaluation summary '20 As mentioned above, even when only one of the first and second conditions is satisfied, the performance of the ball-point pen tip can be clearly seen when these conditions are less satisfied ( Table 3, Table 4, Table 7, Table 8) In addition, when both of the first and second conditions are satisfied, of course, when neither of these conditions are satisfied, and when either of these conditions is satisfied, 47 1238123 发明, the description of the invention clearly sees the improvement of the performance of the ballpoint pen tip 10 (Table 5, Table 9). That is, the appropriateness of the foregoing F / D value range and the appropriateness of the G / D value and (D-H) value range, It can help to improve the performance of the ballpoint pen tip 10 from the side, and at the same time, when these complement and complement each other, the performance of the round 5-point pen tip 10 can be further improved. 2) The relationship between the diameter of the ball and the diameter of the inscribed circle of the inner protrusion, the protruding size of the ball, and the inner diameter of the front end of the convergence portion (the second)

(2-1)實施例及比較例實施例及比較例所使用之圓珠30，皆為超硬合金製 10 ，且圓珠直徑（D)為0.18mm。固持座20係使用SUS316L製，且外徑0.6mm、内徑0.22mm且長度8mm之金屬細管。(2-1) Examples and Comparative Examples The balls 30 used in the examples and comparative examples are all made of cemented carbide 10, and the ball diameter (D) is 0.18 mm. The holder 20 is a thin metal tube made of SUS316L, with an outer diameter of 0.6 mm, an inner diameter of 0.22 mm, and a length of 8 mm.

於下述表10分別顯示於各實施例及各比較例中之 D、F/D、G/D、及（D — H)(然而，F係内方突起22之内 15 接圓直徑（mm)，G為圓珠突出尺寸（mm)，Η係歛合部前端直徑（mm))之值。【表10】 D F/D G/D D-H (mm) (mm) 實施例12 0.18 0.44 0.36 0.003 實施例13 0.18 0.44 0.22 0.013 實施例14 0。18 0.36 0.31 0.005 實施例15 0.18 0.660 0.31 0.005 實施例16 0.18 0.44 0.31 0.005 48 1238123 明說明 ___實施例17 0.18 0.50 0.31 0.005 __^施例18 0.18 0.55 0.31 0.005 __實施例19 0.18 0.44 0.28 0.008 實施例20 0.18 0.50 0.28 0.008 声施例21 0.18 0.55 0.28 0.008 __^施例22 0.18 0.44 0.25 0.010 __比較例5 0.18 0.36 0.36 0.003 ___比較例6 0.18 0.66 0.36 0.003 ___比較例7 0.18 0.36 ^0.22 0.014 __比較例8 ~------- 0.18 0.66 —------—— _0.22 0.014 此外，於以下說明中，前述表1〇内之值中，第2 列所顯示之F/D值係0.4以上且〇·6以下時，稱作「第1 條件」。又，前述表内之值中，第3列所顯示之G/D值為0.25以上，且，第4列所示之（D〜H)為〇〇〇5以上且 5 〇·010以下時，稱作「第2條件」。即，由實施例12、13 及16至22係滿足第i條件。又，由實施例14至22係滿足第2條件。然而，比較例5至8皆不滿足第i條件及第2條件任一。各實施例及各比較例之圓珠筆筆尖1〇，如第u圖 10所示，係結合於與市售之圓珠筆4〇(觀]51，三菱紐筆股份有限公司）使用之相同筆體内，而供書寫。又，於該圓珠筆40之墨水收容管44中，充填有具有河述表2所顯示之成分之假塑性水性墨水，以供書寫 49 1238123 玖、發明說明 (2-2)試驗項目針對前述各實施例及各比較例，與前述（1-2)同樣地只施①不順暢感、②固持座變形、③圓珠固持力及④圓珠 >儿卩曰之试驗’又同樣地作評價。此外，實際上，由前述實施例12至22及比較例5 至8中，於前述評價項目皆無評價為rc」者。The following Table 10 shows D, F / D, G / D, and (D-H) in each of the examples and comparative examples (however, the inside diameter of the F-type inner protrusion 22 and the diameter of the circle (mm) ), G is the value of the protruding size (mm) of the ball and the diameter (mm) of the front end of the convergence portion. [Table 10] DF / DG / D DH (mm) (mm) Example 12 0.18 0.44 0.36 0.003 Example 13 0.18 0.44 0.22 0.013 Example 14 0. 18 0.36 0.31 0.005 Example 15 0.18 0.660 0.31 0.005 Example 16 0.18 0.44 0.31 0.005 48 1238123 Description ___Example 17 0.18 0.50 0.31 0.005 __ ^ Example 18 0.18 0.55 0.31 0.005 __Example 19 0.18 0.44 0.28 0.008 Example 20 0.18 0.50 0.28 0.008 Acoustic Example 21 0.18 0.55 0.28 0.008 __ ^ Example 22 0.18 0.44 0.25 0.010 __Comparative Example 5 0.18 0.36 0.36 0.003 ___Comparative Example 6 0.18 0.66 0.36 0.003 ___Comparative Example 7 0.18 0.36 ^ 0.22 0.014 __Comparative Example 8 ~ ------- 0.18 0.66 ----------- _0.22 0.014 In the following description, among the values in the aforementioned table 10, the F / D value shown in the second column is 0.4 or more and 0.6 or less , Called "the first condition". Also, among the values in the above table, when the G / D value shown in the third column is 0.25 or more, and when (D to H) shown in the fourth column is not less than 0.0005 and not more than 50.010, This is called "the second condition". That is, the twelfth condition is satisfied by the examples 12, 13, and 16 to 22. It is to be noted that the second condition is satisfied from Examples 14 to 22. However, none of Comparative Examples 5 to 8 satisfies either the i-th condition or the second condition. The ballpoint pen tip 10 of each example and each comparative example, as shown in FIG. 10, is incorporated into the same pen body used in the commercially available ballpoint pen 40 (View) 51, Mitsubishi New Pen Co., Ltd., And for writing. In addition, the ink containing tube 44 of the ball-point pen 40 is filled with a pseudoplastic water-based ink having the composition shown in Table 2 for writing 49 1238123 玖, invention description (2-2) The test items are implemented for the foregoing Examples and comparative examples were applied in the same manner as in (1-2) above except for ① a feeling of blame, ② deformation of the holder, ③ ball holding force, and ④ the test of the ball > daughter-in-law. . In addition, in fact, none of the above-mentioned evaluation items was evaluated as "rc" in Examples 12 to 22 and Comparative Examples 5 to 8.

(2-3)第1條件之檢討以下，將圓珠筆筆尖10滿足第丨條件之效果，分為不滿足第2條件與滿足第2條件來作檢討。 (2-3-1)不滿足第2條件時如下述表11所示，實施例12與比較例5及比較例 6之G/D值及（D — H)值共通，但皆不滿足第2條件。且 ’相對於實施例12滿足第1條件，比較例5及比較例6(2-3) Review of the first condition In the following, the effect that the ballpoint pen tip 10 satisfies the first condition will be divided into whether the second condition is not satisfied and the second condition is satisfied. (2-3-1) When the second condition is not satisfied, as shown in Table 11 below, the G / D values and (D-H) values of Example 12 and Comparative Examples 5 and 6 are the same, but neither of them meets the 2 conditions. And ′ satisfies the first condition with respect to Example 12, Comparative Example 5 and Comparative Example 6

不滿足第1條件。【表11]The first condition is not satisfied. [Table 11]

F/D G/D D— Η ① (2) ③ ④ 實施例12 0.44 0.36 0.003 A A B A 比較例5 0.36 0.36 0.003 A B B A 比較例6 0.66 0.36 0.003 A A B B 由前述表11之結果，不滿足第2條件但滿足第1 條件之實施例12，相對於皆不滿足第丨條件與第2條件之比較例5，於固持座變形(②）之項目中評價為優良。又，相對於皆不滿足第1條件及第2條件之比較例6 ,於 50 20 1238123 玖、發明說明圓珠沉陷（④）之項目中評價為優良。 5 另外，如下述表12所示，實施例13與比較例7及比較例8之G/D值共通，又，（D—H)值幾乎相同，然而皆不滿足第2條件。且，相對於實施例13滿足第丨條件 ’比較例7及比較例8不滿足第1條件。【表12】F / DG / DD— Η ① (2) ③ ④ Example 12 0.44 0.36 0.003 AABA Comparative Example 5 0.36 0.36 0.003 ABBA Comparative Example 6 0.66 0.36 0.003 AABB According to the results in Table 11 above, the second condition is not satisfied but the first condition is satisfied. Example 12 of the condition was evaluated as excellent in the item of deformation of the retaining seat (②), as compared with Comparative Example 5 in which neither the first condition nor the second condition was satisfied. Moreover, compared with Comparative Example 6 in which neither the first condition nor the second condition was satisfied, it was evaluated as excellent in the item of 50 20 1238123 玖, description of the invention (④). 5 In addition, as shown in Table 12 below, the G / D values of Example 13 and Comparative Examples 7 and 8 are the same, and the (D-H) values are almost the same, but neither of the two conditions is satisfied. In addition, compared with Example 13, the first condition was satisfied; Comparative Example 7 and Comparative Example 8 did not satisfy the first condition. [Table 12]

由前述表12之結果，不滿足第2條件但滿足第ιFrom the results in Table 12 above, the second condition is not satisfied but the

10 15 條件之實施例13，相對於皆不滿足第丨條件及第2條件之比較例7，於固持座變形（②）之項目中評價為優良。又，相對於皆不滿足第1條件及第2條件之比較例8，於圓珠沉陷（④）之項目中評價為優良。Example 13 with 10 15 conditions was evaluated as excellent in the item of deformation of the retaining seat (②) compared to Comparative Example 7 where neither of the conditions 丨 and 2 was satisfied. In addition, compared with Comparative Example 8 in which neither the first condition nor the second condition was satisfied, it was evaluated as excellent in the item of the bead subsidence (④).

即，圓珠筆筆尖10於G/D值及（D — H)值之條件幾乎相同，且，不滿足第2條件之情況下，滿足第丨條件時係較不滿足第1條件時可清楚看到性能提昇。 (2-3-2)滿足第2條件時如下述表13所示，實施例16、實施例17及實施例 18與貫施例14及實施例15之G/D值及①一印共通，且皆滿足第2條件。且，相對於實施例16、實施例17及貫施例18皆滿足第1條件，實施例14及實施例15皆不滿足第1條件。 51 20 1238123 玖、發明說明【表13】That is, the ballpoint pen tip 10 has almost the same G / D value and (D-H) value conditions, and if the second condition is not satisfied, it can be clearly seen that the first condition is satisfied when the first condition is satisfied Improved performance. (2-3-2) When the second condition is satisfied, as shown in Table 13 below, the G / D values of Example 16, Example 17 and Example 18 and Example 14 and Example 15 are the same as each other. And all meet the second condition. In addition, with respect to Example 16, Example 17, and Example 18, all satisfy the first condition, and Example 14 and Example 15 do not satisfy the first condition. 51 20 1238123 发明, Description of the invention [Table 13]

由前述表13之結果，滿足第2條件且滿足第丨條件之實施例16、實施例17及實施例18,相對於滿足第 2條件而不滿足第i條件之實施例14，皆於固持座變形（ ②）之項目中評價為優良，又，不順暢感（①）之項目之評價亦有提昇。再者，滿足第2條件且滿足第丨條件之實施例16、實施例Π及實施例18，相對於滿足第2條件但不滿足第1條件之實施例15,皆於圓珠沉陷（④）之項 10 目中評價為優良，又，不順暢感（①）之項目之評價亦有提昇。即，於G/D值及（D—H)值之條件相同，且，滿足第 2條件之情況下，滿足第丨條件時係較不滿足第丨條件時可清楚看到圓珠筆筆尖10性能之提昇。此外，如下述表14所示，即使於滿足第2條件之範圍内改變了 G/D值及（D 一 H)值，在滿足第1條件範圍内之實施例19至實施例21之評價亦一樣良好。【表14】 F/D G/D D — Η ① ② ③ ④ 52 15 1238123 玫、發明說明實施例19 0.44 0.28 0.008 A A A A 實施例20 0.50 0.28 0.008 A A A A 實施例21 0.55 0.28 0.008 A A A A (2-3-3)第1條件之效果由箣述（2-3-1)及（2-3-2)之結果可清楚明白，不管第 2條件，當F/D值低於第1條件之下限（〇·4)時（表η之比較例5、表12之比較例7、表13之實施例14)，固持座變形增大。又，不管第2條件，F/D值高於第1條件之上限（0.6)時（表11之比較例6、表12之比較例8、表13 之實施例15，圓珠沉陷增大。即，第1條件由固持座變形及圓珠沉陷之觀點看來，可以說是F/D值之適當範圍〇 (2-4)弟2條件之檢討以下，將圓珠筆筆尖10滿足第2條件時之效果分為不滿足第1條件時與滿足第丨條件時來作檢討。 (2-4-1)不滿足第1條件時如下述表15所示，實施例14與比較例5及比較例 7之F/D值共通，然而皆不滿足第1條件。且，相對於貫施例14滿足第2條件，比較例5及比較例7不滿足第 2條件。【表15】 F/D G/D D— H ① ② ③ ④ 53 1238123 玖、發明說明From the results of the foregoing Table 13, Examples 16, 17 and 18 meeting the second condition and meeting the 丨 condition, compared to the embodiment 14 meeting the second condition but not the i condition, are all in the holding seat. Distorted items (②) were evaluated as excellent, and unsmooth items (①) were improved. Furthermore, Example 16, Example Π, and Example 18 meeting the second condition and satisfying the 丨 condition are all subsided to the ball as compared to Example 15, which satisfies the second condition but does not satisfy the first condition (④) Item 10 was evaluated as excellent, and the evaluation of the item (1) was not smooth. That is, when the conditions of the G / D value and the (D-H) value are the same, and when the second condition is satisfied, the performance of the ballpoint pen tip 10 can be clearly seen when the condition 丨 is satisfied when the condition 丨 is not satisfied. Promotion. In addition, as shown in Table 14 below, even if the G / D value and the (D-H) value are changed within a range that satisfies the second condition, the evaluation of Examples 19 to 21 within the range that satisfies the first condition is Just as good. [Table 14] F / DG / DD — Η ① ② ③ ④ 52 15 1238123 Rose, Invention Description Example 19 0.44 0.28 0.008 AAAA Example 20 0.50 0.28 0.008 AAAA Example 21 0.55 0.28 0.008 AAAA (2-3-3) The effect of the first condition can be clearly understood from the results of (2-3-1) and (2-3-2). Regardless of the second condition, when the F / D value is lower than the lower limit of the first condition (0.4 ) (Comparative Example 5 of Table η, Comparative Example 7 of Table 12, and Example 14 of Table 13), the deformation of the holder increases. Regardless of the second condition, when the F / D value is higher than the upper limit (0.6) of the first condition (Comparative Example 6 in Table 11, Comparative Example 8 in Table 12, and Example 15 in Table 13, the ball subsidence increases. That is, from the viewpoint of the deformation of the holder and the sinking of the ball, the first condition can be said to be an appropriate range of F / D value. (2-4) The review of the second condition is as follows. When the ballpoint pen tip 10 satisfies the second condition The effect is reviewed when the first condition is not satisfied and when the first condition is satisfied. (2-4-1) When the first condition is not satisfied, as shown in Table 15 below, Example 14 and Comparative Example 5 and Comparative Examples The F / D values of 7 are common, but none of them satisfy the first condition. In addition, compared with Example 14 which satisfies the second condition, Comparative Example 5 and Comparative Example 7 do not satisfy the second condition. [Table 15] F / DG / DD— H ① ② ③ ④ 53 1238123 发明, description of the invention

實施例14 0.36 0.31 0.005 A B A A 比較例5 0.36 0.36 0.003 A B B A 比較例7 0.36 0.22 0.014 B B A AExample 14 0.36 0.31 0.005 A B A A Comparative Example 5 0.36 0.36 0.003 A B B A Comparative Example 7 0.36 0.22 0.014 B B A A

由箣述表15之結果，不滿足第1條件而滿足第2 條件之實施例14，相對於皆不滿足第丨條件及第2條件之比較例5，於圓珠固持力（③）之項目中評價為優良。又，相對於皆不滿足第丨條件與第2條件之比較例7，於不順暢感（①）之項目中評價為優良。另外，如下述表16所示，實施例15與比較例6及比較例8之F/D值共通，然而皆不滿足第丨條件。且，相對於實施例15滿足第2條件，比較例6及比較例8不滿足第2條件。From the results described in Table 15, Example 14 which does not satisfy the first condition and satisfies the second condition, is compared with the item 5 in which neither the first condition nor the second condition is satisfied in Comparative Example 5. The evaluation was excellent. Moreover, compared with Comparative Example 7 in which neither the first condition nor the second condition was satisfied, it was evaluated as excellent in the item of feeling of unsmoothness (①). In addition, as shown in Table 16 below, the F / D values of Example 15 are the same as those of Comparative Example 6 and Comparative Example 8, but neither of them satisfies the first condition. Furthermore, Comparative Example 6 and Comparative Example 8 did not satisfy the second condition with respect to Example 15 satisfying the second condition.

【表16】 F/D G/D d-h ① ② ③ ④ 實施例15 0.66 0.31 0.005 A A A B 比較例6 0.66 0.36 0.003 A A B B 比較例8 0.66 0.22 0.014 B A A B 10[Table 16] F / D G / D d-h ① ② ③ ④ Example 15 0.66 0.31 0.005 A A A B Comparative Example 6 0.66 0.36 0.003 A A B B Comparative Example 8 0.66 0.22 0.014 B A A B 10

由前述表16之結果，不滿足第1條件而滿足第2 條件之貝施例15 ’相對於皆不滿足第i條件及第2條件之比較例6’於圓珠固持力（③)之項目中評價為優良。又相對於皆不滿足第i條件及第2條件之比較例8,於不順暢感（①）之項目中評價為優良。即，不滿足第圓珠筆筆尖H)之F/D值之條件相同，且，於 1條件之情況下，滿足第2條件時係較不滿足 54 15 1238123 玖、發明說明第2條件時可清楚看到性能之提昇。 (2-4-2)滿足第1條件時如下述表17所示，實施例ι6、實施例19及實施例 22與貫施例12及實施例13之F/D值共通，且皆滿足第 5 1條件。且，相對於實施例16、實施例19及實施例22 白滿足第2條件，實施例12及實施例13皆不滿足第2 條件。【表17】Based on the results in Table 16 above, the item 15 of the Example 15 'which does not satisfy the first condition and satisfies the second condition is compared to the item 6 which does not satisfy the condition i and the condition 2 of Comparative Example 6'. The evaluation was excellent. In comparison with Comparative Example 8, which did not satisfy both the i-th condition and the second condition, it was evaluated as excellent in the item of feeling of unsmoothness (①). That is, the conditions that do not satisfy the F / D value of the ballpoint pen tip H) are the same, and in the case of condition 1, when the second condition is satisfied, it is less satisfied 54 54 1238123 玖, the second condition of the invention description can be clearly seen To performance improvement. (2-4-2) When the first condition is satisfied, as shown in Table 17 below, the F / D values of Example 6, Example 19, and Example 22 are the same as those of Embodiment 12 and Example 13, and all meet the F / D values. 5 1 condition. In addition, with respect to Example 16, Example 19, and Example 22, the second condition is satisfied, and neither Example 12 nor Example 13 satisfies the second condition. [Table 17]

F/D G/D D— Η ① (2) ③ ④ 實施例16 0.44 0.31 0.005 ΑΑ A A A 實施例19 0.44 0.28 0.008 A A A A 實施例22 0.44 0.25 0.010 A A A A 實施例12 0.44 0.36 0.003 A A B A 實施例13 0.44 0.22 0.013 B A A — -A 由前述表17之結果，滿足第丨條件且滿足第2條 10 件之貫施例16、實施例19及實施例22，相對於滿足第 1條件但不滿足第2條件之實施例12，皆於圓珠固持力（ ③）之項目中評價為優良。再者，滿足第i條件且滿足第 2條件之實施例16、實施例19及實施例22，相對於滿足第1條件但不滿足第2條件之實施例丨3，皆於不順暢 15 感（①）之項目中評價為優良。即，於F/D值之條件相同，且，滿足第i條件之# 況下，滿足第2條件時係較不滿足第2條件時可、、主姑看到圓珠筆筆尖10性能之提昇。 55 1238123 玖、發明說明 (2-4-3)第2條件之效果F / DG / DD—Η ① (2) ③ ④ Example 16 0.44 0.31 0.005 ΑΑ AAA Example 19 0.44 0.28 0.008 AAAA Example 22 0.44 0.25 0.010 AAAA Example 12 0.44 0.36 0.003 AABA Example 13 0.44 0.22 0.013 BAA — -A From the results of the foregoing Table 17, the 16th embodiment, 19th embodiment, and 22nd embodiment that meet the condition 丨 and meet the 10th condition of Article 2 are compared to the embodiment 12 that satisfies the first condition but does not meet the second condition , All were evaluated as excellent in the items of ball holding force (③). In addition, Embodiment 16, Embodiment 19, and Embodiment 22 that satisfy the i-th condition and the second condition are all less smooth than those that satisfy the first condition but do not satisfy the second condition. 15 ( ①) The items were evaluated as excellent. That is, the conditions of the F / D value are the same, and if the condition i is satisfied, # 2 is satisfied when the second condition is not satisfied, and the aunt sees the performance improvement of the ballpoint pen tip 10. 55 1238123 发明, Description of the invention (2-4-3) Effect of the second condition

由前述（2-4-1)及（2-4-2)之結果可清楚明白，不管第 1條件，當G/D值低於第2條件之下限（0.25)，且，（D — H)值高於第2條件之上限（0.010mm)時（表15之比較例7 5 、表16之比較例8、表17之實施例13)，不順暢感增大。又，不管第1條件，當G/D值滿足第2條件但（D —H) 值低於第2條件之下限（0.005mm)時（表15之比較例5、表16之比較例6、表17之實施例12)，圓珠固持力下降。即，第2條件由不順暢感及圓珠固持力之觀點看來， 10 可以說是G/D值及（D —H)值之適當範圍。 (2-5)評價之匯總如前述，即使僅滿足第1條件及第2條件任一者時，亦較皆不滿足這些條件時可清楚看到圓珠筆筆尖10性能之提昇（表11、表12、表15、表16)。 15 再者，皆滿足第1條件及第2條件時，當然較皆不From the results of (2-4-1) and (2-4-2), it is clear that regardless of the first condition, when the G / D value is lower than the lower limit of the second condition (0.25), and (D — H When the value) is higher than the upper limit (0.010 mm) of the second condition (Comparative Example 7 5 in Table 15, Comparative Example 8 in Table 16, and Example 13 in Table 17), the feeling of unsmoothness increases. Regardless of the first condition, when the G / D value satisfies the second condition but the (D-H) value is lower than the lower limit of the second condition (0.005mm) (Comparative Example 5 in Table 15, Comparative Example 6 in Table 16, In Example 12 of Table 17, the ball holding force was decreased. That is, the second condition is considered to be an appropriate range of the G / D value and the (D-H) value from the viewpoint of the feeling of irregularity and the holding power of the ball. (2-5) The summary of the evaluation is as described above. Even when only one of the first condition and the second condition is satisfied, the improvement of the performance of the ballpoint pen tip 10 can be clearly seen when these conditions are not satisfied (Table 11, Table 12 , Table 15, Table 16). 15 Furthermore, when both the first condition and the second condition are satisfied, of course, neither of them

滿足這些條件時，且較僅滿足這些條件任一者時，還可清楚看到圓珠筆筆尖10性能之提昇（表13、表17)。 gp，前述F/D值範圍之適當化與G/D值及（D—H)值範圍之適當化，係可分別從旁協助圓珠筆筆尖10性能之 20 提昇，且同時當這些相輔相成而適當化時，可更提昇圓珠筆筆尖10之性能。 (3)固持座材質之檢討 (3-1)實施例及比較例實施例及比較例所使用之圓珠30，皆為超硬合金製 56 1238123 玖、發明說明，且圓珠直徑（D)為0_28mm。When these conditions are met, and when only one of these conditions is met, the performance improvement of the ballpoint pen tip 10 can be clearly seen (Table 13, Table 17). gp, the appropriateness of the aforementioned F / D value range, and the appropriateness of the G / D value and (D-H) value range can be improved from the side to help the ballpoint pen tip 10 performance of 20, and at the same time, when these complement each other and appropriate , The performance of the ballpoint pen tip 10 can be further improved. (3) Review of the holder material (3-1) Examples and Comparative Examples The balls 30 used in the examples and comparative examples are made of cemented carbide 56 1238123 玖, description of the invention, and the diameter of the balls (D) It is 0_28mm.

固持座20之形成係使用鎳含量11.8重量％之 SUS316L製之金屬細管或鎳含量8.3重量％之SUS304製之金屬細管任一者。任一金屬細管皆係外徑0.6mm，内 5 徑0.3mm且長度8mm。又，分別之維氏硬度係藉退火之有無進行調節。此外，維氏硬度係藉微小硬度試驗機（( 股份）日本明石公司，MVK-E)作測量。於下述表18顯示實施例及比較例各個之材質及維氏硬度。【表18】材質維氏硬度（Hv) 實施例23 SUS316L 370 比較例9 SUS316L 190 比較例10 SUS304 355 比較例11 SUS304 180The holding seat 20 is formed by using either a metal thin tube made of SUS316L with a nickel content of 11.8% by weight or a metal thin tube made of SUS304 with a nickel content of 8.3% by weight. Any metal thin tube is 0.6mm in outer diameter, 0.3mm in inner diameter and 8mm in length. The Vickers hardness is adjusted by the presence or absence of annealing. In addition, Vickers hardness is measured by a micro hardness tester ((Shares) Akashi Corporation, MVK-E). The materials and Vickers hardness of each of the examples and comparative examples are shown in Table 18 below. [Table 18] Material Vickers hardness (Hv) Example 23 SUS316L 370 Comparative example 9 SUS316L 190 Comparative example 10 SUS304 355 Comparative example 11 SUS304 180

10 各實施例及各比較例之圓珠筆筆尖10，如第11圖所示，係結合於與市售之圓珠筆40(UM-151，三菱鉛筆股份有限公司）使用之相同筆體内，而供書寫。又，於該圓珠筆40之墨水收容管44中，充填有具有前述表2所顯示之成分之所謂假塑性水性墨水，以供 15 書寫。 (3 - 2)試驗項目針對前述各個實施例及比較例，實施下述⑤至⑦之試驗，並分別依下述作評價。 ⑤加工性 57 1238123 玖、發明說明 >於内方突起22形成時，由龜裂之產生、變形或有無：寸了良作評價。具體而言’分別將全無前述情況者貝為A」，及，看到有這些情況中任一者評價為％〇 * ⑥圓珠沉陷、使用依據助規格⑷⑹之書寫試驗器，以書寫速度4.5m/分、書寫角度6〇。、及書寫負荷〇 _(辑重 )之條件，於進行_m螺旋書寫後，以測量圓珠尺寸之 · 減少作評價。具體而言，分別將圓珠突出尺寸之減少小於20_者評價為「A」，2〇_以上且小於π⑽者為「B」，及，27#m以上者為rc」。 ⑦彎曲變形 15 使用依據ISO規格之書寫試驗器，測量於書寫速度4.5m/分、書寫角度60。之條件下、以書寫負荷 0.侧(50g重）或〇.98N(100g重）進行嶋m螺旋書寫後之圓珠筆筆尖10前端之彎曲量以作評價。將鈾端彎曲量於〇· 1 mm以下者評價為「具體而言，分別八」，超過0.1mm10 The ballpoint pen tip 10 of each embodiment and each comparative example, as shown in FIG. 11, is incorporated into the same pen body used in the commercially available ballpoint pen 40 (UM-151, Mitsubishi Pencil Co., Ltd.) for writing . The ink containing tube 44 of the ball-point pen 40 is filled with so-called pseudoplastic water-based ink having the composition shown in Table 2 for writing. (3-2) Test items For each of the foregoing examples and comparative examples, the following tests ⑤ to ⑦ were performed, and the evaluations were performed according to the following. ⑤ Workability 57 1238123 玖, description of the invention > When the inner protrusion 22 is formed, it is caused by cracks, deformation, or presence or absence: An evaluation was performed. Specifically, 'respectively the case where none of the foregoing conditions are present is A', and the evaluation of any of these conditions is evaluated as% 〇 * ⑥ The ball is sinking, and a writing tester according to the auxiliary specification ⑷⑹ is used to write at a speed 4.5m / min, writing angle 60. And writing load 〇 _ (repetition weight) conditions, after the _m spiral writing, to measure the reduction in the size of the ball for evaluation. Specifically, "A" is evaluated as the reduction in ball protrusion size of less than 20 mm, "B" is greater than 20 mm and less than π⑽, and rc is greater than 27 #m. ⑦ Bending deformation 15 Using a writing tester according to the ISO standard, measure at a writing speed of 4.5 m / min and a writing angle of 60. Under the conditions, the amount of bending of the tip of the ballpoint pen tip 10 after the 嶋 m spiral writing with a writing load of 0.1 side (50 g weight) or 0.98 N (100 g weight) was evaluated. Those with a uranium end curvature of less than 0.1 mm were evaluated as "specifically, eight", exceeding 0.1 mm

且小於0.2mm者為「B」，及 (3-3)試驗結果〇.2mm以上者為rc」。 20 前述各個實施例及比較例於前述各試驗之評價係如下述表19。【表19】If it is less than 0.2mm, it is "B", and (3-3) Test result 0.2mm or more is rc ". 20 The evaluations of the foregoing examples and comparative examples in the foregoing tests are shown in Table 19 below. [Table 19]

------ ------- Ni(%) —------ —---- 免免 —_實施例23 11.8 —---—-— 370 A A A A 58 1238123 玖、發明說明------ ------- Ni (%) ------- ------ Exempt --- Example 23 11.8 --------- 370 AAAA 58 1238123 玖, Invention description

比較例9 11.8 190 A B B B 比較例10 8.3 355 C A A A 比較例11 8.3 180 A C B CComparative Example 9 11.8 190 A B B B Comparative Example 10 8.3 355 C A A A Comparative Example 11 8.3 180 A C B C

首先，鎳含量10重量％以上且維氏硬度350以上之實施例23，係較鎳含量10%以上但維氏硬度小於350之比較例9，於圓珠沉陷（⑤）及彎曲變形（⑦）之項目中評價較優良。即，藉鎳含量10重量％以上使加工性良好，且使維氏硬度為350以上而有效地防止圓珠沉陷及彎曲變形0 另外，前述實施例23係較維氏硬度350以上但鎳含量小於10%之比較例10，於加工性（⑤）之項目中評價較優良。即，藉維氏硬度為350以上而有效地防止圓珠 10 沉陷及彎曲變形，且以鎳含量為10重量％以上使加工性提昇。順帶一提，鎳含量小於1〇重量％且維氏硬度小於 350之比較例11，因硬度低而加工性（⑤）良好，然而圓珠沉陷（⑥）及彎曲變形（⑦）之評價卻較比較例9還更差， 15 終究無法供於實用。 (4)針對直控縮小孔最大徑p、直徑縮小孔錐角卩、及外形錐角R之評價分別試做本發明圓珠筆筆尖10與比較例之圓珠筆筆尖，並使用這些來進行評價試驗。 20 即，使用於固持座20中之直徑縮小孔最大徑P、直徑縮小孔錐角Q、及外形錐角R分別不同之圓珠筆筆尖 59 1238123 玫、發明說明，對(4-1)高速書寫性及（4_2)加工性進行評價試驗。此外，圓珠30之圓珠直徑D為〇 25mm，材質係使用超硬合金。固持座2〇係以不錄鋼形成。 - 又’墨水係使用於攝氏25度、剪切速度38.4sec-丨. 5中黏度為100mPa. sec者，其成分係如前述表2。 (4-1)高速書寫性南速書寫性係以書寫速度9m/分進行螺旋書寫，而評價字有沒有模糊不清。其評價係如以下。 · AA :完全沒發生字模糊不清。 10 A ·幾乎沒發生字模糊不清。 B:字有些模糊不清但不是很嚴重。 C :字非常模糊不清。 (4-2)加工性加工性係於以切槽加工形成墨水引導溝Μ時，調 15查有沒有因拙曲造成加工不良。即，加工下述表20所示之各結構之圓珠筆筆尖1〇。〇〇個時，調查整體有多少百 · 分比發生加工不良。其評價係如下述。 · ΑΑ :完全沒發生加工不良（〇%)。 · 2〇 A ·有發生加工不良，但是非常少（〇〜〇〇2%)。 B :有發生些許加工；j；良，然而於生產效率上不構成問題（0.02〜1%)。 C :發生嚴重之加工不良以上）。【表20】 60 1238123 玖、發明說明First, Example 23 with a nickel content of 10% by weight or more and a Vickers hardness of 350 or more is compared to Comparative Example 9 with a nickel content of 10% or more but a Vickers hardness of less than 350. It is found in ball subsidence (⑤) and bending deformation (⑦) The evaluation of the project is excellent. That is, the nickel content of 10% by weight or more makes the processability good, and the Vickers hardness is 350 or more, which effectively prevents the ball from sinking and bending. In addition, the foregoing Example 23 is 350 or more than the Vickers hardness but the nickel content is less than Comparative example 10 of 10% was evaluated excellent in the item of workability (⑤). That is, the Vickers hardness is 350 or more to effectively prevent the sinker 10 from sinking and bending, and the workability is improved when the nickel content is 10% by weight or more. Incidentally, in Comparative Example 11 in which the nickel content is less than 10% by weight and the Vickers hardness is less than 350, the workability (⑤) is good because of the low hardness, but the evaluation of ball subsidence (⑥) and bending deformation (⑦) is relatively Comparative Example 9 is even worse, and 15 cannot be practically used after all. (4) Evaluation of the maximum diameter p of the direct reduction hole, the taper angle 直径 of the diameter reduction hole, and the external taper angle R The ballpoint pen tip 10 of the present invention and the ballpoint pen tip of the comparative example were respectively tried and evaluated using these. 20 That is, the ball-point pen tip 59 used in the holder 20 has a diameter reduction hole maximum diameter P, a diameter reduction hole taper angle Q, and an external taper angle R, respectively. 59 1238123 Rose, description of the invention, (4-1) high-speed writing And (4_2) workability evaluation test. The ball diameter D of the ball 30 is 0.25 mm, and the material is made of cemented carbide. The holder 20 is formed of non-recorded steel. -Also, the ink is used at 25 ° C and a shear speed of 38.4sec- 丨. 5 For a viscosity of 100mPa. Sec, the composition is as shown in Table 2 above. (4-1) High-speed writing performance The South-speed writing performance is spiral writing at a writing speed of 9 m / min, and the evaluation characters are not ambiguous. The evaluation is as follows. · AA: No word ambiguity occurred. 10 A · Fuzziness hardly occurs. B: The words are a bit vague but not very serious. C: The words are very vague. (4-2) Workability The workability is when the ink guide groove M is formed by grooving, and it is adjusted to check whether there is a machining defect due to the huff. That is, the ballpoint pen tip 10 of each structure shown in Table 20 below was processed. At the time of 0.00, the percentage of the entire process was investigated. The evaluation is as follows. · ΑΑ: No processing defects occurred (0%). · 20 A · Machining defects occurred, but very few (0 to 0.02%). B: Some processing occurred; j; Good, but it did not pose a problem in terms of production efficiency (0.02 to 1%). C: serious processing defects occur). [Table 20] 60 1238123 玖, description of the invention

D(mm) P(mm) Q(度） R(度）高速書寫性加工性實施例24 0.25 0.4 30 30 B AA 實施例25 0.25 0.4 60 30 A A 實施例26 0.25 0.4 90 30 AA B 實施例27 0.25 0.5 30 35 A AA 實施例28 0.25 0.5 60 35 AA A 實施例29 0.25 0.5 90 35 AA B 比較例12 0.25 0.4 25 30 C AA 比較例13 0.25 0.4 95 30 AA C 比較例14 0.25 0.35 60 30 C A 比較例15 0.25 0.35 90 30 C BD (mm) P (mm) Q (degree) R (degree) High-speed writing processability Example 24 0.25 0.4 30 30 B AA Example 25 0.25 0.4 60 30 AA Example 26 0.25 0.4 90 30 AA B Example 27 0.25 0.5 30 35 A AA Example 28 0.25 0.5 60 35 AA A Example 29 0.25 0.5 90 35 AA B Comparative Example 12 0.25 0.4 25 30 C AA Comparative Example 13 0.25 0.4 95 30 AA C Comparative Example 14 0.25 0.35 60 30 CA Comparative Example 15 0.25 0.35 90 30 CB

前述實驗之結果，首先由高速書寫性來看，比較例 12、比較例14及15字相當模糊不清。即，比較例12係 P及R之值與實施例24乃至26同一但是Q值小於30度之情況，比較例14及比較例15為Q及R之角度與實施 5 例25及26同一然而P值於0.4mm以下之情況。於比較例12中，因為Q值即直徑縮小孔錐角小，所以墨水引導孔27與墨水流通孔28A之間之距離長，會對墨水供給造成阻礙。又，於比較例14及比較例15 中，P值即直徑縮小孔最大徑小，因此於墨水引導孔 10 27至墨水流通孔28A之間會發生墨水堵塞。另外，於實施例24中，字有些許模糊不清但不是很嚴重。這可以想成為當Q值為30度，墨水引導孔27 61 1238123 玖、發明說明與墨水流通孔28A之距離增長，對墨水之供給造成輕微阻礙。另外，實施例25乃至29皆沒有或幾乎不發生字模 - 糊不清之現象。這些係皆形成為p值〇 4mm以上，q值 . 5 30度以上且90度以下。於此，幾乎不發生字模糊不清之實施例27之q值，與稍微有發生字模糊不清之實施例24同為3〇度，但形成P值0.5mm,係較實施例24還大，因此，墨水之供鲁給平順，幾乎不發生字模糊不清。又，完全沒發生字模 10 糊不清之實施例28之Q值與幾乎不發生字模糊不清之實施例25同為60度，然而因與前述相同之理由，而完全沒發生字模糊不清。接著，針對加工性來看，於比較例丨3中發生嚴重加工不良。即，P及R之值係與實施例24乃至26相同 15 ，但Q值為90度以上之情況。這是由於使Q值增加，會使直控縮小孔42A之長度縮短，且必需使墨水引導孔鲁 27朝圓珠側延長，而造成錐部25 一部份之厚度減少，容易引發加工不良。又，於實施例26及29、比較例15中，有發生些許 · 一0 力不良這疋因為Q值為90度，且因與前述相同之理由’容易發生些許加工不良。另外，於其他實施例及比較例中，係完全不發生加工不良，或即使有發生亦很輕微。即，Q值為25度之比較例12、Q值為30度之實施例24及27、Q值為6〇度 62 1238123 玖、發明說明、知例25及28、比較例14之情；：兄。 ' 與Q值為60度之實施例25及28相比，〇值為3〇疮、， V 一又L下之比較例12、實施例24及27係加工性，、、少沒係因為Q值越小，可將錐部25 一部份之， 5 形成動5 P 又山又与，因此不易引發拙曲。然而，如比較例12所示The results of the foregoing experiments are, first of all, from the viewpoint of high-speed writing, the characters of Comparative Example 12, Comparative Examples 14 and 15 are rather ambiguous. That is, Comparative Example 12 is a case where the values of P and R are the same as those in Examples 24 to 26 but the Q value is less than 30 degrees. In Comparative Example 14 and Comparative Example 15, the angles of Q and R are the same as those in Example 5 and 25 and 26, but P When the value is less than 0.4mm. In Comparative Example 12, the Q value, that is, the taper angle of the diameter reduction hole is small, so the distance between the ink guide hole 27 and the ink circulation hole 28A is long, which hinders the ink supply. In Comparative Example 14 and Comparative Example 15, the P value, which is the largest diameter of the reduced-diameter hole, is small. Therefore, ink clogging occurs between the ink guide hole 10 27 and the ink circulation hole 28A. In addition, in Example 24, the words were slightly ambiguous but not very serious. It can be thought that when the Q value is 30 degrees, the ink guide hole 27 61 1238123 玖, the distance between the ink guide hole 28A and the ink flow hole 28A is increased, which slightly hinders the supply of ink. In addition, in Examples 25 to 29, there was no or almost no illegibility. These systems are all formed with a p-value of 0.4 mm or more and a q-value of 5 30 degrees or more and 90 degrees or less. Here, the q value of Example 27 where the word ambiguity hardly occurs is the same as that of Example 24 where the word ambiguity slightly occurs, but the P value is 0.5 mm, which is larger than that of Example 24. Therefore, the supply of ink to Lu is smooth, and almost no ambiguity occurs. In addition, the Q value of Example 28 in which the illegibility of word form 10 did not occur at all was 60 degrees as in Example 25 in which word ambiguity was hardly occurred, but for the same reason as above, no word ambiguity occurred. . Next, from the viewpoint of processability, severe machining failure occurred in Comparative Example 丨 3. That is, the values of P and R are the same as those in Examples 24 to 26, 15 but the Q value is 90 degrees or more. This is because increasing the Q value shortens the length of the direct-control reduction hole 42A, and it is necessary to extend the ink guide hole 27 toward the ball side, resulting in a reduction in the thickness of a part of the tapered portion 25, which easily causes processing defects. Further, in Examples 26 and 29 and Comparative Example 15, there were some cases where a poor force was caused because the Q value was 90 degrees, and for a reason similar to that described above, there was a possibility that a small amount of processing failure occurred. In addition, in other examples and comparative examples, machining defects did not occur at all, or were slight even if they occurred. That is, Comparative Example 12 with a Q value of 25 degrees, Examples 24 and 27 with a Q value of 30 degrees, and a Q value of 60 degrees 62 1238123 玖, description of the invention, known examples 25 and 28, and comparative example 14: Man. 'Compared with Examples 25 and 28 with a Q value of 60 degrees, the value of 0 is 30 ulcers, and Comparative Example 12, Examples 24 and 27 at V and L are processability, and are not due to Q The smaller the value, the part of the conical part 25 can be formed as 5 and 5 P moves both in the mountains and in the same way, so it is not easy to cause aberration. However, as shown in Comparative Example 12

，當Q值過小時，會對墨水之流通造成阻礙，而引發字模糊不清。 X 然而，將實施例24乃至實施例26，與實施例27乃 % 至29做比較時，雖然Q值相同，但是於高速書寫性上〇，實施例27乃至29係較優良。這係由於已將R值形成為35度，所以即使使P值形成為〇.5mm，較實施例24 乃至26大時，錐部25 一部份亦不會減少厚度，所以不才貝及加工性，墨水之流通更加平順。將以上评價綜合且加以酌量時，首先針對比較例而言’比較例13之高速書寫性優良但加工性差，比較例丨2及14及15加工性還可以但是高速書寫性差。因此， % 热法達到本發明之目的之提供一種高速書寫性優良且容易加工之圓珠筆筆尖。另外，實施例24乃至29係可提供一種圓珠筆筆尖 · 20 ^ 5亥圓珠筆筆尖係在兩速書寫性及加工性兩方面無不佳之評價，高速書寫性優良，且容易加工。此外，實施例 27乃至29可以說可提供高速書寫性更加優良之圓珠筆筆尖。且，鑒於前述實施例24乃至26之評價，p值宜為 63 1238123 玖、發明說明 0.4mm以上，Q值宜為30度以上90度以下，R值宜為 30度以上，進而，鑒於前述實施例27乃至29之評價，可得知結論為R值尤宜為35度以上。 (5)針對圓珠直徑D、墨水流通孔直徑F、圓珠突出 5 尺寸G、歛合部前端内徑Η之評價。 (5-1)實施例及比較例When the Q value is too small, it will hinder the flow of ink and cause the word to be ambiguous. X However, when comparing Example 24 to Example 26 with Examples 27 or% to 29, although the Q value is the same, in terms of high-speed writing, Example 27 to 29 are superior. This is because the R value has been formed to 35 degrees, so even if the P value is formed to 0.5 mm, the thickness of the tapered portion 25 will not be reduced when it is larger than that in Example 24 or 26. The ink flow is smoother. When the above evaluations are combined and taken into consideration, first of all, the comparative example 13 is superior in high-speed writing performance but poor in processability, and Comparative Examples 2 and 14 and 15 have acceptable processability but poor high-speed writing performance. Therefore, the% thermal method achieves the object of the present invention to provide a ballpoint pen tip that is excellent in high-speed writing and easy to process. In addition, Example 24 to 29 series can provide a ball-point pen tip. The 20 ^ 5 Hai ball-point pen tip has no bad evaluation in terms of two-speed writing performance and processability. It has excellent high-speed writing performance and is easy to process. In addition, it can be said that Examples 27 to 29 can provide a ball-point pen tip with more excellent high-speed writing. Moreover, in view of the evaluation of the foregoing Examples 24 to 26, the p value should be 63 1238123 玖, the description of the invention should be 0.4 mm or more, the Q value should be 30 degrees or more and 90 degrees or less, and the R value should be 30 degrees or more. Evaluation of Examples 27 to 29 shows that the R value is particularly preferably 35 degrees or more. (5) Evaluation of the diameter D of the ball, the diameter F of the ink flow hole, the size G of the ball protrusion 5 and the inner diameter Η of the front end of the convergence portion. (5-1) Examples and Comparative Examples

實施例及比較例所使用之圓珠30，皆為超硬合金製，圓珠直徑（D)為0.25mm。固持座20係SUS430製，且使用外徑為2.3mm之 10 圓柱材作為材料。於下述表21分別顯示於各實施例及各比較例中之 D、F/D、G/D及（D—H)(然而，F係墨水流通孔28A之直徑（mm)，G為圓珠突出尺寸（mm)、Η為歛合部前端内徑 (mm))之值。The beads 30 used in the examples and comparative examples are made of cemented carbide, and the ball diameter (D) is 0.25 mm. The holder 20 is made of SUS430 and uses a cylindrical material with an outer diameter of 2.3mm as the material. D, F / D, G / D, and (D-H) in the examples and comparative examples are shown in Table 21 below (however, F is the diameter (mm) of the ink circulation hole 28A, G is a circle The bead protrusion size (mm) and Η are values of the inner diameter (mm) of the front end of the convergence portion.

15 【表21】 D (mm) F/D G/D D-H (mm) 實施例30 0.25 0.40 0.35 0.003 實施例31 0.25 0.40 0.23 0.013 實施例32 0.25 0.32 0.32 0.005 實施例33 0.25 0.64 0.32 0.005 實施例34 0.25 0.40 0.32 0.005 實施例35 0.25 0.50 0.32 0.005 實施例36 0.25 0.60 0.32 0.005 64 123812315 [Table 21] D (mm) F / DG / D DH (mm) Example 30 0.25 0.40 0.35 0.003 Example 31 0.25 0.40 0.23 0.013 Example 32 0.25 0.32 0.32 0.005 Example 33 0.25 0.64 0.32 0.005 Example 34 0.25 0.40 0.32 0.005 Example 35 0.25 0.50 0.32 0.005 Example 36 0.25 0.60 0.32 0.005 64 1238123

玖、發明說明发明 Description of invention

此外，以下之說明中，將前述表21内之值中，第2 列所顯示之F/D值為〇·4以上Q.6以下稱作「第i條件_ 。又，將前述表内之值中，帛3列所顯示之㈣值為〇.25mm以上，且，第4列所顯示之（d—h)值為謂5以上且ο·〇1〇以下稱作「第2條件」。即，由實施例3〇、實施例31及實施<列34至實施例39係滿足第i條件。又，由實施例32至實施例39係滿足第2條件。然而，由比較例16至19皆不滿足第丨條件及第2條件。In the following description, among the values in the aforementioned Table 21, the F / D value shown in the second column is 0.4 or more and Q.6 or below is referred to as "i-th condition_." Among the values, the ㈣ value shown in the 帛 3 column is 0.25 mm or more, and the (d-h) value shown in the 4th column is 5 or more and ο · 〇10 hereinafter is referred to as "second condition". That is, Example 30, Example 31, and Implementation < Column 34 to Example 39 satisfy the i-th condition. It should be noted that the second condition is satisfied from the thirty-second embodiment to the thirty-ninth embodiment. However, none of Comparative Examples 16 to 19 satisfies the first condition and the second condition.

10 各實施例及各比較例之圓珠筆筆尖10,如第n圖所不，係結合於與市售之圓珠筆4〇(UM_151，三菱鉛筆股份有限公司）使用之相同筆體内，而供書寫。又，於該圓珠筆40之墨水收容管44中，充填有具有别述表2所顯示之成分之所謂假塑性水性墨水，以供書寫。 (5-2)試驗項目針對前述各實施例及比較例，實施下述①至④之試驗，且分別依下述作評價。 65 1238123 玖、發明說明 ① 不順暢感使用分別結合有實施例及比較例之圓珠筆筆矣1〇之圓珠筆’藉檢查人實際書寫之官能試驗來評價伴隨於書寫之不順暢感。具體而言’分別將檢查人完全沒感覺 5到不順暢感，或於書料有感覺到不構成障礙程度之些許不順暢感者評㈣「A」，於書«❹丨有些許困難程10 The ballpoint pen tip 10 of each example and each comparative example, as shown in figure n, is incorporated into the same pen body used in the commercially available ballpoint pen 40 (UM_151, Mitsubishi Pencil Co., Ltd.) for writing. The ink containing tube 44 of the ball-point pen 40 is filled with so-called pseudoplastic water-based ink having a composition shown in Table 2 for writing. (5-2) Test items For each of the foregoing examples and comparative examples, the following tests ① to ④ were carried out, and the evaluations were performed as follows. 65 1238123 发明. Description of the invention ① Feeling of irregularity Use a ballpoint pen combined with the examples and comparative examples, a ballpoint pen of 10, to evaluate the feeling of irregularity accompanying the writing by using the functional test of the examiner's actual writing. Specifically, ‘respective reviewers do n’t feel 5 to feel uncomfortable at all, or those who feel that the material does not constitute a degree of impediment are rated as“ A ”, which is a bit difficult in the book« ❹ 丨

度之不順暢感者評價為「B」，及，於書寫時感到有顯著障礙程度之不順暢感者評價為「C」。 ② 高速書寫性 10 高速書寫性係使用依據ISO規格14145-1之書寫試驗器，以書寫速度4.5m/分、書寫角度6〇0、及書寫負荷 0.98N(100g重）之條件進行書寫，藉辨識其線條斷續程度Those who have a sense of degree of irregularity are evaluated as "B", and those who feel a significant degree of disturbance at the time of writing are evaluated as "C". ② High-speed writing performance 10 High-speed writing performance uses a writing tester according to ISO standard 14145-1 to write at a speed of 4.5m / min, a writing angle of 60, and a writing load of 0.98N (100g weight). Identify the degree of line breaks

^料價。具體而言，分別將幾乎看不到線條斷續者評仏為A」，看到線條有稍微斷續者評價為rB」，及可顯 15 著看到線條斷續者評價為「C」。 ③ 圓珠固持力因書寫造成之圓珠固持力之變化係使用依據⑽規才〇 14145」之書寫試驗器，以書寫速度4.5m/分、書寫角度60及書寫負荷〇.98N(1〇〇g重）之條件，進行曰寫y炱利用觀察歛合部之鬆動情況來作評價。具體而二分別將幾乎看不到斂合部21鬆動者評價為「八」，級合部21有鬆動但仍然固持圓珠30者為「B」，及，因斂口邛21鬆動造成圓珠30脫落者為rc」。 ④圓珠沉陷 66 1238123 玖、發明說明、因書寫造成之圓珠30沉陷，於以前述③同樣之條件進仃書寫後’利用測量圓珠突出尺寸之減少來作評價。具體言之’分別將圓珠突出尺寸之減少小於25_者評價為「Α」，25μίη以上且小於35帅者為「b」，及， 35μπι以上者為rc」。此外’實際上，由前述實施例3〇至39及由比較例 16至19中’對於前述評價項目任—皆無評價為％者^ Price of materials. Specifically, those who can hardly see the line interruption are evaluated as A ", those who see a slight line interruption are evaluated as rB", and those who can see the line interruption are marked as "C". ③ The change in the bead holding force caused by writing is based on the use of a writing tester in accordance with 〇14145 ”, at a writing speed of 4.5 m / min, a writing angle of 60, and a writing load of 0.98 N (1〇〇 g weight), the evaluation is performed by observing the looseness of the convergence part by writing y 炱. Specifically, the two evaluated the person who could hardly see the loosening of the convergence portion 21 as "eight", the one with looseness in the gradation portion 21 but still holding the ball 30 as "B", and the ball caused by the loosening of the convergence opening 21 30 is rc ". ④Bead subsidence 66 1238123 发明, description of the invention, the subsidence of the bead 30 caused by writing, after writing under the same conditions mentioned above ③, the measurement is made by measuring the reduction of the protruding size of the beads. Specifically, ′ is evaluated as “Α” for those with a reduction in ball protruding size of less than 25_, “b” for those with a size of 25 μίη and less than 35, and rc for those with a size of 35 μm or more. In addition, "in fact, from the foregoing Examples 30 to 39 and from Comparative Examples 16 to 19", the above evaluation items were not evaluated as "%".

(5-3)第1條件之檢討 10 以下’將圓珠"尖1G滿足第1條件之效果，分別於不滿足第2條件之情況與滿足之情況下作檢討。 (5-3-1)不滿足第2條件之情況(5-3) Review of the first condition 10 The following will review the effect of satisfying the first condition of the "ball tip" 1G, and the case where the second condition is not satisfied and the case where it is satisfied. (5-3-1) Case where the second condition is not satisfied

如下述表22所示，實施例3〇與比較例16及比較例17之G/D值及（D —H)值共通，然而卻皆不滿足第2 15 條件。且，相對於實施例30滿足第丨條件，比較例16 及比較例17不滿足第1條件。【表22】As shown in Table 22 below, the G / D value and the (D-H) value of Example 30 are the same as those of Comparative Example 16 and Comparative Example 17, but none of them satisfies the condition 2-15. Moreover, compared with Example 30, the first condition was satisfied, and Comparative Example 16 and Comparative Example 17 did not satisfy the first condition. [Table 22]

F/D G/D D-H ① (2) ③ ④ 實施例30 0.40 0.35 0.003 A A B A 比較例16 032 0.35 0.003 A B B A 比較例17 0.64 0.35 0.003 A A B B 由前述表22之結果，不滿足第2條件而滿足第j 條件之實施例30，相對於皆不滿足第1條件與第2條件之比較例16 ’於咼速書寫性（②）之項目中評價為優良。 67 20 1238123 玖、發明說明又，相對於皆不滿足第丨條件及第2條件之比較例17，於圓珠沉陷（④）之項目中評價為優良。另外，如下述表23所示，實施例31與比較例18 及比較例19之G/D值及（D—H)值共通，然而皆不滿足第2條件，且，相對於實施例31滿足第丨條件，比較例 18與比較例19不滿足第丨條件。【表23】 F/D G/D D— Η ① ② ③ ④ 實施例31 0.40 0.23 0.013 Β A A A 比較例18 0.32 0.23 0.013 Β B A A 比較例19 _ 0.64 0.23 0.013 Β A A -—---- 由刖述表23之結果，不滿足第2條件而滿足第工條件之實施例31，相對於皆不滿足第i條件及第之條件F / DG / D DH ① (2) ③ ④ Example 30 0.40 0.35 0.003 AABA Comparative Example 16 032 0.35 0.003 ABBA Comparative Example 17 0.64 0.35 0.003 AABB According to the results in Table 22 above, the second condition is not satisfied and the jth condition is satisfied. Example 30 was evaluated as excellent in the comparative example 16 ′ which failed to satisfy the first condition and the second condition in the item of high-speed writing (②). 67 20 1238123 发明、 Explanation of the invention In comparison with Comparative Example 17, which did not satisfy the first condition and the second condition, it was evaluated as excellent in the item of ball subsidence (④). In addition, as shown in Table 23 below, the G / D value and the (D-H) value of Example 31 are the same as those of Comparative Example 18 and Comparative Example 19. However, neither of them satisfies the second condition. The first condition, Comparative Examples 18 and 19 do not satisfy the first condition. [Table 23] F / DG / DD— Η ① ② ③ ④ Example 31 0.40 0.23 0.013 Β AAA Comparative Example 18 0.32 0.23 0.013 Β BAA Comparative Example 19 _ 0.64 0.23 0.013 Β AA --------- According to the table As a result of Example 23, Example 31, which does not satisfy the second condition and satisfies the first working condition, does not satisfy the i-th condition and the n-th condition.

10之比較例18，於高速書寫性（②）之項目中評價為優良。又’相對於皆不滿足第i條件及第2條件之比較例19，於圓珠沉陷（④）之項目中評價為優良。即，使圓珠筆筆尖1〇之G/D值及（D—H)值之條件相同’且不滿足第2條件之情況下，滿足第i條件時係 15 lx不滿足第1條件時可清楚看到性能提昇。 (5-3-2)滿足第2條件時如下述表24所示，實施例34、實施例％及實施例 36與實施例32及實施例33《G/D值及(D—H)值共通，且皆滿足第2條件。且，相對於實施例34、實施例35 20及貝施例36皆滿足第！條件，實施例％及實施例幻皆 68 1238123 玖、發明說明不滿足第1條件。【表24】Comparative example 18 of 10 was evaluated as excellent in the item of high-speed writing (②). Also, compared to Comparative Example 19, in which neither the i-th condition nor the second condition was satisfied, it was evaluated as excellent in the item of the bead subsidence (④). That is, if the conditions of the G / D value and the (D-H) value of the ballpoint pen tip 10 are the same, and when the second condition is not satisfied, 15 lx when the i condition is satisfied can be clearly seen when the first condition is not satisfied. To performance improvement. (5-3-2) When the second condition is satisfied, as shown in Table 24 below, Example 34, Example%, and Example 36 and Example 32 and Example 33 "G / D value and (D-H) value It is common, and both satisfy the second condition. And, with respect to Example 34, Example 35, 20, and Example 36, all satisfy the first! Conditions, Examples% and Examples are all 68 1238123 发明, Description of the Invention The first condition is not satisfied. [Table 24]

------ 實施例34 F/D ——--- 0.40 G/D 0.32 0.32 D-H 0.005 0.005 見 Λ — 免實施例35 --——. 0.50 A A A A A A 實施例3 6 0.60 0.32 0.005 -----— A A A A A 實施例32 0.32 0.32 0.005 A -— B A ----- A A A 實施例33 0.64 0.32 0.005 A A A A -----1 A B 街則迎衣24之結果，滿足第2條件且滿足第丨條件之實施例34、實施例35及實施例36，相對於滿足第 2條件而不滿足第！條件之實施例32，皆於高速書寫性( ②)之項目中評價為優良。再者，滿足第2條件且滿足第 1條件之實施例34、實施例35及實施例36，相對於滿足第2條件而不滿足第丨條件之實施例33，皆於圓珠沉陷（④）之項目中評價為優良。------ Example 34 F / D ----- 0.40 G / D 0.32 0.32 DH 0.005 0.005 See Λ-Exempt Example 35 ------. 0.50 AAAAAA Example 3 6 0.60 0.32 0.005 --- --- AAAAA Example 32 0.32 0.32 0.005 A --- BA ------- AAA Example 33 0.64 0.32 0.005 AAAA ----- 1 AB Street is the result of 24, meeting the second condition and meeting the The conditions of Example 34, Example 35, and Example 36 satisfy the second condition but not the second! Condition Example 32 was evaluated as excellent in the items of high-speed writing (②). Furthermore, Example 34, Example 35, and Example 36, which satisfy the second condition and satisfy the first condition, are all subsided with respect to the example 33 which satisfies the second condition but does not satisfy the condition 丨 (④) The items were evaluated as excellent.

即’於G/D值及（D — H)值之條件相同，且，滿足第 2條件之情況下，滿足第丨條件時係較不滿足第丨條件時可清楚看到圓珠筆筆尖1〇性能之提昇。此外，如下述表25所示，即使於滿足第2條件範圍内改變了 G/D值及（D—H)值，滿足第1條件範圍内之實施例37至實施例39之評價亦一樣良好。【表25】That is, the conditions of the G / D value and the (D-H) value are the same, and when the second condition is met, the ballpoint pen tip 10 can be clearly seen when the first condition is met and the second condition is not met. Of promotion. In addition, as shown in Table 25 below, even if the G / D value and the (D-H) value were changed within the range satisfying the second condition, the evaluations of Examples 37 to 39 within the first condition range were equally good. . [Table 25]

F/D G/D D-H ① ② ③ ④ 1施例37 0.40 0.25 0.010 A A A A 69 !238123F / D G / D D-H ① ② ③ ④ 1 Example 37 0.40 0.25 0.010 A A A A 69! 238123

(5-3-3)第l條件之效果(5-3-3) Effect of condition l

由月il述（5-3-1)及（5-3-2)之結果清楚可見，不管第2 條件，當F/D值低於第i條件之下限（〇·4)時（表22之比較例16、表23之比較例18、與表24之實施例32)，高 5速書寫性降低。又，不管第2條件，#齡值高於第i 條件之上限（0.6)時（表22之比較例17、表23之比較例 19、表24之實施例33)，圓珠沉陷增大。即，第1條件由固持座變形及圓珠沉陷之觀點看來可以說是F/D值之適當範圍。 1〇 (5·4)第2條件之檢討以下，將圓珠筆筆尖10滿足第2條件時之效果，分為不滿足第1條件與滿足第1條件來作檢討。 (5-4-1)不滿足第1條件時It can be clearly seen from the results of (5-3-1) and (5-3-2) that regardless of the second condition, when the F / D value is lower than the lower limit (i · 4) of the i condition (Table 22) In Comparative Example 16, Comparative Example 18 in Table 23, and Example 32 in Table 24), the writing performance at a high speed of 5 was reduced. Regardless of the second condition, when the #age value is higher than the upper limit (0.6) of the i-th condition (Comparative Example 17 in Table 22, Comparative Example 19 in Table 23, and Example 33 in Table 24), the ball subsidence increases. That is, the first condition can be said to be an appropriate range of F / D values from the standpoint of deformation of the holder and sinking of the beads. 1〇 (5 · 4) Review of the second condition The effect of the ballpoint pen tip 10 meeting the second condition will be categorized into failure to meet the first condition and the first condition. (5-4-1) When the first condition is not satisfied

如下述表26所示，實施例32與比較例16及比較 15 例18之F/D值共通，但皆不滿足第1條件。且，相對於實施例32滿足第2條件，比較例16及比較例18不滿足第2條件。【表26】As shown in Table 26 below, the F / D values of Example 32 are the same as those of Comparative Example 16 and Comparative Example 18, but none of them satisfies the first condition. Furthermore, Comparative Example 16 and Comparative Example 18 did not satisfy the second condition with respect to Example 32 satisfying the second condition. [Table 26]

F/D G/D D — Η ① ② ③ ④ 貫施例3 2 0.32 0.32 0.005 A B A A 比較例16 0.32 0.35 0.003 A B B A 比較例18 0.32 0.23 0.013 B B A A 70 1238123 玖、發明說明由月）述表26之結果，不滿足第i條件而滿足第2 ^、件之貫施例32 ’相對於皆不滿足第1條件及第2條件幸乂例16’於圓珠固持力（③）之項目中評價為優良。相對於白不滿足第i條件及第2條件之比較例工8，於不順暢感（①）之項目中評價為優良。另外，如下述表27所示，實施例33與比較例17 及比車乂例19之F/D值共通，但皆不滿足第工條件。且，相對於貝知例33滿足第2條件，比較例17及比較例ΐ9 φ 10【表27]F / DG / DD — Η ① ② ③ ④ Implementation Example 3 2 0.32 0.32 0.005 ABAA Comparative Example 16 0.32 0.35 0.003 ABBA Comparative Example 18 0.32 0.23 0.013 BBAA 70 1238123 (2) The results in Table 26 are described in the table. Example 32 which satisfies the condition i and satisfies the 2nd and the 2nd conditions, is relatively excellent in the item of the ball holding force (③), as compared with the case that the conditions 1 and 2 are not satisfied. Compared with Comparative Example 8 in which White condition i and Condition 2 were not satisfied, it was evaluated as excellent in the item with a sense of unsmoothness (①). In addition, as shown in Table 27 below, the F / D values of Example 33 are the same as those of Comparative Example 17 and Comparative Example 19, but they do not satisfy the first working condition. In addition, compared with the known example 33, the second condition is satisfied, Comparative Example 17 and Comparative Example ΐ9 φ 10 [Table 27]

不滿足第2條件。 F/D G/D D— Η ① ② ③ ④ 實施例33 0.64 0.32 0.005 A A A B 比較例17 0.64 0.35 0.003 A A B B 比較例19 0.64 0.23 0.013 B A A B 由前述表27之結果，不滿足第丨條件但滿足第2 條件之實施例33，相對於皆不滿足第丨條件及第2條件之比較例17,於圓珠固持力（③）之項目中評價為優良。又，相對於皆不滿足第1條件及第2條件之比較例19， 15 於不順暢感（①）之項目中評價為優良。即，圓珠筆筆尖10於F/D值之條件相同，且，不滿足第1條件之情況下，滿足第2條件時係較不滿足第 2條件時可清楚看到性能之提昇。 (5-4-2)滿足第1條件時如下述表28所示，實施例34及實施例37與實施 71 20 1238123 玖、發明說明例30及實施例31，F/D值係共通且皆滿足第i條件。且，相對於實施例34、實施例37皆滿足第2條件，實施The second condition is not satisfied. F / DG / DD— Η ① ② ③ ④ Example 33 0.64 0.32 0.005 AAAB Comparative Example 17 0.64 0.35 0.003 AABB Comparative Example 19 0.64 0.23 0.013 BAAB According to the results in Table 27 above, the conditions of the first condition are not satisfied but the second condition is satisfied. Example 33 was evaluated as excellent in the item of the bead holding force (③), as compared to Comparative Example 17, which neither satisfied the first condition and the second condition. Moreover, compared with Comparative Examples 19 and 15 in which neither the first condition nor the second condition was satisfied, it was evaluated as excellent in the item of feeling of unsmoothness (①). That is, the conditions of the F / D value of the ballpoint pen tip 10 are the same, and if the first condition is not satisfied, the performance improvement can be clearly seen when the second condition is satisfied than when the second condition is not satisfied. (5-4-2) When the first condition is satisfied, as shown in Table 28 below, Example 34 and Example 37 and Example 71 20 1238123 玖, Invention Description Example 30 and Example 31, F / D values are common and all The i-th condition is satisfied. And, with respect to Example 34 and Example 37, the second condition is satisfied, and

F/D G/D D-H ① (2) ③ ④ 實施例34 0.40 0.32 0.005 A A A A 實施例37 0.40 0.25 0.010 A A A A 實施例30 0.40 0.35 0.003 A A B A 實施例31 0.40 0.23 0.013 B A A A 例30及實施例31皆不滿足第2條件。【表28】 _ 5 由前述表28之結果，滿足第1條件且滿足第2條件之貫施例34及實施例37，相對於滿足第丨條件而不滿足第2條件之實施例30，皆於圓珠固持力（③）之項目中評價為優良。再者，滿足第i條件且滿足第2條件之實施例34及實施例37,相對於滿足第i條件但不滿足 10第2條件之實施例31，皆於不順暢感（①）之項目中評價為優良。即，F/D之條件相同，且，滿足第i條件之情況下 · ，滿足第2條件時係較不滿足第2條件時可清楚看到圓珠筆筆尖10性能之提昇。 ’ 15 (5-4-3)第2條件之效果由前述（5-4-1)及（5-4·2)之結果可清楚看到，不管第 1條件’當G/D值低於第2條件之下限（〇25)，且，①一 HM直高於第2條件之上限(0.010_時(表％之比較例18 、表27之比較例19、與表28之實施例31)，不順暢感 72 1238123 玖、發明說明增大。又，不管第1條件，當G/D值滿足第2條件但φ —Η)值低於第2條件之下限（0.005mm)時（表％之比較例 16、表27之比較例17、與表28之實施例30)，圓珠固持力降低。即，第2條件由不順暢感及圓珠固持力之觀 5 點看來’可以說是G/D值及（D — H)值之適當範圍。 (1-5)評價之匯總如前述，即使僅滿足第1條件及第2條件任一者時，亦較皆不滿足這些條件時，可清楚見到圓珠筆筆尖1〇性能之提昇（表22、表23、表26、表27)。 10 再者，皆滿足第1條件及第2條件時，當然較皆不滿足這些條件時，且較僅滿足這些條件任一者時，還可清楚見到圓珠筆筆尖10性能之提昇（表24、表28)。即’ 述F/D值範圍之適當化與值及（D — H)值範圍之適當化，係可分別從旁協助圓珠筆筆尖丨〇性能之 15 提昇，且同時當這些相輔相成而適當化時，可更提昇圓珠筆筆尖10之性能。發明之效果本舍明係如如述之結構，因此可發揮以下欽述之效果。 20 即，依本發明中第1發明之說明，於使用小直徑圓珠之圓珠筆筆尖中，藉使内方突起之形成所需之變形量恰當’可儘可能地使圓珠沉陷情況減輕。又，依本發明中第2發明之說明，於使用小直徑圓珠之圓珠筆筆尖中，藉使歛合部之形成所需之變形量恰 73 1238123 玖、發明說明當’可有效地防止圓珠跳脫。進而，依本發明中第3發明之說明，可提供一種圓珠筆筆尖，係於該使用小直徑圓珠之圓珠筆筆尖中，藉使内方大起之形成所需之變形量恰當，且使歛合部之形 5成所需之變形量恰當，而可儘可能地使圓珠沉陷情況減輕且不易造成圓珠跳脫。又，依本發明中第4發明之說明，可於使用小直徑圓珠，且以内方突起支撐該圓珠之圓珠筆筆尖中，解決因金屬細管之材質引發之彎曲與圓珠沉陷。 10 又，依本發明中第5發明之說明，可提供一種可實現暢快書寫感之圓珠筆，該圓珠筆具有使用小直徑圓珠之圓珠筆筆a，且係利用於該使用小直徑圓珠之圓珠筆筆▲中使内方突起之形成所需之變形量恰當，並使歛合部21之形成所需之變形量恰當，而可儘可能地使圓珠沉 15陷情況減輕，且不易造成圓珠跳脫。再者依本發明中第6發明之說明，可提供一種圓珠筆，該圓珠筆係除了前述第5發明之效果之外，利用將使用之墨限定為所謂假塑性水性墨水，而可實現更加暢順之書寫感。力此外&本發明中第7發明之說明，可提供-種圓珠筆筆尖，當該圓珠筆筆尖具有圓珠直徑小於〇3mm之小直徑圓珠，尤其0.29mm以下之圓珠時，高速書寫性亦優良’且亦容易進行加工。再者依本發明中第8發明之說明，於使用小直徑 74 1238123 玖、發明說明圓珠之圓珠筆筆尖中，藉使用以形成墨水流通孔之切削量恰當，而可儘可能地使圓珠沉陷情況減輕，並同時可確保充分之墨水供給。又，依本發明中第9發明之說明，於使用小直徑圓珠之圓珠筆筆央中’藉使歛合部之形成所需之變形量恰當，可有效地防止圓珠跳脫。另外，依本發明中第10發明之說明，可提供一種圓珠筆筆尖，係於該使用小直徑圓珠之圓珠筆筆尖中，藉使用以形成墨水流通孔之切削量恰當，且使歛合部之形成所需之變形量恰當，而可儘可能地使圓珠沉陷情況減輕，並同時可確保充分之墨水供給，且不易造成圓珠跳脫。【圖式簡單說明】第1圖是本發明第i實施形態之圓珠筆筆尖之正視圖。且，以戴面顯示有固持座。第2圖係本發明第1實施形態之圓珠筆筆尖之正視圖〇第3圖係本發明第1實施形態之圓珠筆筆尖之前端部份之正視圖（A)及截面圖（B)。且，於A以截面顯示固持座。又’於B顯示去除圓珠之狀態。第4圖係顯示本發明第1實施形態之圓珠筆筆尖製造步驟之正視圖。且，以截面顯示固持座。第5圖係顯示本發明第1實施形態之圓珠筆筆尖之紫造步驟之正視圖。且，以截面顯示固持座。 1238123 玟、發明說明第6圖係顯示本發明第1實施形態之圓珠筆筆尖之製造步驟之正視圖。且，以戴面顯示固持座。第7圖係顯示本發明第1實施形態之圓珠筆筆尖之製造步驟之正視圖。且，以截面顯示固持座。 5 第8圖係顯示本發明第丨實施形態之圓珠筆筆尖之製造步驟之正視圖。且，以截面顯示固持座。第9圖係顯示本發明第1實施形態之圓珠筆筆尖之製造步驟之正視圖。且，以截面顯示固持座。第1〇圖係顯示本發明第1實施形態之圓珠筆筆尖之製 10造步驟之正視圖。且，以截面顯示固持座。第11圖係結合有本發明第1實施形態之圓珠筆筆尖之圓珠筆之正視截面圖。第12圖係結合有本發明其他實施形態之圓珠筆筆尖之圓珠筆之正視截面圖。 15 第13圖係結合有本發明其他實施形態之圓珠筆筆尖之圓珠筆之正視截面圖。第14圖係本發明第2實施形態之圓珠筆筆尖之前端部份之放大正視圖。且，以截面顯示固持座。第15圖係本發明第2實施形態之圓珠筆筆尖之正視圖 20 。且’以戴面顯示固持座。又，省略内側之墨水引導溝。第16圖係本發明第2實施形態之圓珠筆筆尖之正視圖〇第17圖係本發明第2實施形態之圓珠筆筆尖之前端部 ^之俯視戴面圖。然而，係顯示去除圓珠之狀態。 76 1238123 玖、發明說明第18圖係顯示本發明第2實施形態之圓珠筆筆尖之製造步驟之正視圖。且，以截面顯示固持座。第19圖係顯示本發明第2實施形態之圓珠筆筆尖之製造步驟之正視圖。且，以截面顯示固持座。 5 第20圖係顯示本發明第2實施形態之圓珠筆筆尖之製造步驟之正視圖。且，以截面顯示固持座。第21圖係顯示本發明第2實施形態之圓珠筆筆尖之製造步驟之正視圖。且，以截面顯示固持座。第22圖係顯示於本發明第2實施形態之圓珠筆筆尖之 10 製造步驟中之前端部份放大之正視圖。且，以截面顯示固持座。第23圖係顯示於本發明第2實施形態之圓珠筆筆尖之製造步驟中之前端部份放大之正視圖。且，以截面顯示固持座。 15 第24圖係顯示於本發明第2實施形態之圓珠筆筆尖之製造步驟中之前端部份放大之正視圖。且，以截面顯示固持座。【圖式之主要元件代表符號表】 10.··圓珠筆筆尖 24…圓珠承接座 20...固持座 25…錐部 21…歛雜 26..。縫隙 22...内方突起 27。.。墨水引導孔 22A...墨水引導溝 28…基部 23...圓珠室 28a...中心孔 1238123 玖、發明說明 28A...墨水流通孔 29.. .縮小部 29A…接連部 30.. .圓珠 40.. .圓珠筆 40A...墨水孔 41…連接器 42.. .封口件 42A...直徑縮小孔 43.. .轴筒 43a...橡膠柄 44.. .墨水收容管 44a...中棉 45…墨水 46…墨水隨動體 47…尾栓 48…替換芯 49.. .收集器 50…幸昆 51.. .侧壁 52.. .底面部 70、80...鑽頭 D…圓珠直徑 E. ··固持座之預定尺寸之内徑 F. ..墨水流通孔内徑 G. ..圓珠突出尺寸 H. ..歛合部内徑 J、 L…距離固持座前端預定距離 K. ..縮小部之預定尺寸之内徑 M...錐部前端内周面之内徑 P. ..直徑縮小孔之最大徑 Q. ..直徑縮小孔錐角 R. ..錐部之錐角度F / DG / D DH ① (2) ③ ④ Example 34 0.40 0.32 0.005 AAAA Example 37 0.40 0.25 0.010 AAAA Example 30 0.40 0.35 0.003 AABA Example 31 0.40 0.23 0.013 BAAA Example 30 and Example 31 did not meet the requirements 2 conditions. [Table 28] _ 5 From the results of the foregoing Table 28, Example 34 and Example 37, which satisfy the first condition and the second condition, are compared to Example 30, which satisfies the first condition and does not satisfy the second condition. It was evaluated as excellent in the item of ball holding force (③). In addition, Example 34 and Example 37 that satisfy the i-th condition and the second condition are all in the item of feeling unsatisfactory (①) compared to the example 31 that satisfies the i-th condition but not the second condition Evaluation was excellent. That is, the conditions of F / D are the same, and when the condition i is satisfied, when the condition 2 is satisfied, the performance of the ballpoint pen tip 10 is clearly seen when the condition 2 is not satisfied. '15 (5-4-3) The effect of the second condition can be clearly seen from the results of the aforementioned (5-4-1) and (5-4 · 2), regardless of the first condition' when the G / D value is lower than Lower limit of the second condition (0 25), and ① HM is higher than the upper limit of the second condition (0.010_hour (Comparative Example 18 of Table%, Comparative Example 19 of Table 27, Example 31 of Table 28) Feeling of unsmoothness 72 1238123 玖, the description of the invention increases. Also, regardless of the first condition, when the G / D value meets the second condition but the value of φ-Η) is lower than the lower limit of the second condition (0.005mm) (Table%) In Comparative Example 16, Comparative Example 17 in Table 27, and Example 30 in Table 28), the ball holding force was reduced. That is, the second condition is considered to be an appropriate range of the G / D value and the (D-H) value from the viewpoint of the feeling of irregularity and the holding power of the ball. (1-5) Summary of evaluation As mentioned above, even when only one of the first condition and the second condition is satisfied, these conditions are less satisfied, and the performance improvement of the ballpoint pen tip 10 can be clearly seen (Table 22, Table 23, Table 26, Table 27). 10 Furthermore, when both the first and second conditions are satisfied, of course, when these conditions are less satisfied, and when only one of these conditions is satisfied, the performance improvement of the ballpoint pen tip 10 can be clearly seen (Table 24, Table 28). That is, the appropriateness of the F / D value range and the appropriateness of the (D-H) value range can be improved from the side of the ballpoint pen tip, respectively, and the performance is improved, and at the same time, when these complement each other and are appropriate, The performance of the ballpoint pen tip 10 can be further improved. EFFECTS OF THE INVENTION Ben Sheming has the structure as described above, so it can exert the effects described below. 20 That is, according to the description of the first invention of the present invention, in a ballpoint pen tip using a small-diameter ball, the amount of deformation required for the formation of the inner protrusion is appropriate ', so as to reduce the ball sinking as much as possible. In addition, according to the description of the second invention of the present invention, in a ballpoint pen tip using a small diameter ball, the amount of deformation required to form the convergence portion is exactly 73 1238123 发明, the description of the invention when 'can effectively prevent the ball Get out. Furthermore, according to the description of the third invention of the present invention, a ballpoint pen tip can be provided, which is a ballpoint pen tip using a small-diameter ball, so that the amount of deformation required for the formation of a large inner side is appropriate, and the convergence is achieved. The amount of deformation required for the shape of the part to be 50% is appropriate, which can reduce the sinking of the ball as much as possible and not easily cause the ball to escape. In addition, according to the description of the fourth invention of the present invention, in a ballpoint pen tip using a small diameter ball and supporting the ball with an inner protrusion, it can solve the bending and ball subsidence caused by the material of the metal thin tube. 10 Also, according to the description of the fifth invention of the present invention, a ball-point pen capable of realizing a smooth writing feeling can be provided. The ball-point pen has a ball-point pen a using a small-diameter ball, and is used for the ball-point pen using a small-diameter ball. ▲ The amount of deformation required to form the inner protrusion is appropriate, and the amount of deformation required to form the convergence portion 21 is appropriate, which can reduce the sinking of the ball as much as possible, and it is not easy to cause the ball to jump. Take off. Furthermore, according to the description of the sixth invention of the present invention, a ball-point pen can be provided. In addition to the effects of the fifth invention, the ball-point pen can be used to limit the ink used to a so-called pseudoplastic water-based ink, which can realize smoother. Writing sense. In addition, a description of the seventh invention of the present invention can provide a ball-point pen nib. When the ball-point pen nib has a small-diameter ball with a ball diameter less than 0.3 mm, especially a ball with a diameter of 0.29 mm or less, the high-speed writing performance is also Excellent 'and easy to process. Furthermore, according to the description of the eighth invention in the present invention, in the ballpoint pen tip with a small diameter of 74 1238123 玖, the ballast pen of the invention description, the cutting amount for forming the ink circulation hole is appropriate, and the ball can be sunk as much as possible The situation is reduced and at the same time sufficient ink supply is ensured. Furthermore, according to the description of the ninth invention of the present invention, in the ballpoint pen center using a small-diameter ball, if the deformation amount required for forming the convergence portion is appropriate, the ball can be effectively prevented from jumping off. In addition, according to the description of the tenth invention of the present invention, a ballpoint pen tip can be provided, which is used in the ballpoint pen tip with a small diameter ball, and the cutting amount for forming the ink circulation hole by using is appropriate, and the convergence part is formed The required amount of deformation is appropriate, which can reduce the sinking of the ball as much as possible, and at the same time ensure sufficient ink supply, and it is not easy to cause the ball to jump off. [Brief Description of the Drawings] FIG. 1 is a front view of a ballpoint pen tip of an i-th embodiment of the present invention. In addition, a holding seat is shown on the wearing surface. Fig. 2 is a front view of the ballpoint pen nib of the first embodiment of the present invention. Fig. 3 is a front view (A) and a cross-sectional view (B) of the front end portion of the ballpoint pen nib of the first embodiment of the present invention. And, the holding seat is shown in cross section at A. Also, "B" shows the state where the beads are removed. Fig. 4 is a front view showing the manufacturing steps of the ballpoint pen nib according to the first embodiment of the present invention. The holding seat is shown in a cross section. Fig. 5 is a front view showing the steps of forming a purple ballpoint pen tip according to the first embodiment of the present invention. The holding seat is shown in a cross section. 1238123 发明 Description of the invention Fig. 6 is a front view showing the manufacturing steps of the ballpoint pen tip according to the first embodiment of the present invention. In addition, the holding seat is displayed on the face. Fig. 7 is a front view showing the manufacturing steps of the ballpoint pen tip according to the first embodiment of the present invention. The holding seat is shown in a cross section. 5 FIG. 8 is a front view showing the manufacturing steps of the ballpoint pen tip according to the first embodiment of the present invention. The holding seat is shown in a cross section. Fig. 9 is a front view showing the manufacturing steps of the ballpoint pen tip according to the first embodiment of the present invention. The holding seat is shown in a cross section. Fig. 10 is a front view showing the manufacturing steps of the ballpoint pen tip according to the first embodiment of the present invention. The holding seat is shown in a cross section. Fig. 11 is a front sectional view of a ballpoint pen incorporating a ballpoint pen tip according to a first embodiment of the present invention. Fig. 12 is a front sectional view of a ballpoint pen incorporating a ballpoint pen tip according to another embodiment of the present invention. 15 FIG. 13 is a front sectional view of a ballpoint pen incorporating a ballpoint pen tip according to another embodiment of the present invention. Fig. 14 is an enlarged front view of a front end portion of a ballpoint pen nib according to a second embodiment of the present invention. The holding seat is shown in a cross section. Fig. 15 is a front view 20 of a ballpoint pen tip according to a second embodiment of the present invention. And ', the holding seat is displayed on the face. The ink guide groove on the inner side is omitted. FIG. 16 is a front view of the ballpoint pen tip of the second embodiment of the present invention. FIG. 17 is a plan view of the front end of the ballpoint pen tip of the second embodiment of the present invention. However, it shows the state where the beads were removed. 76 1238123 发明 Description of the invention Fig. 18 is a front view showing the manufacturing steps of the ballpoint pen tip according to the second embodiment of the present invention. The holding seat is shown in a cross section. Fig. 19 is a front view showing a manufacturing process of a ballpoint pen tip according to a second embodiment of the present invention. The holding seat is shown in a cross section. 5 Fig. 20 is a front view showing the manufacturing steps of the ballpoint pen tip according to the second embodiment of the present invention. The holding seat is shown in a cross section. Fig. 21 is a front view showing a manufacturing process of a ballpoint pen tip according to a second embodiment of the present invention. The holding seat is shown in a cross section. Fig. 22 is an enlarged front view showing a front end portion of the ballpoint pen tip 10 in the manufacturing step of the second embodiment of the present invention. The holder is shown in cross section. Fig. 23 is an enlarged front view showing a front end portion in a manufacturing step of a ballpoint pen tip according to a second embodiment of the present invention. The holder is shown in cross section. 15 FIG. 24 is an enlarged front view showing a front end portion in a manufacturing step of a ballpoint pen tip according to a second embodiment of the present invention. The holder is shown in cross section. [Character table of the main components of the figure] 10. ·· ball-point pen tip 24 ... ball-receiving base 20 ... retaining base 25 ... cone part 21 ... convergence 26 ... Gap 22 ... inner protrusion 27. .. Ink guide hole 22A ... Ink guide groove 28 ... Base 23 ... Bead chamber 28a ... Center hole 1238123 玖, Description of the invention 28A ... Ink circulation hole 29 ... Reduced portion 29A ... Connecting portion 30. .Ball ball 40..ball pen 40A ... ink hole 41 ... connector 42..seal 42A ... diameter reduction hole 43..shaft barrel 43a ... rubber handle 44..ink storage Tube 44a ... Cotton 45 ... Ink 46 ... Ink follower 47 ... Tail plug 48 ... Replacement core 49..Collector 50 ... Xing Kun 51 ... Side wall 52..Bottom surface 70, 80. ..Drill bit… Ball diameter E. ·· Inner diameter of the predetermined size of the holder F. .. Inner diameter of the ink circulation hole G. .. Ball projection size H. .. Inner diameter of the convergence part J, L ... Distance The predetermined distance of the front end of the holder K. The inner diameter of the predetermined size of the reduced portion M ... The inner diameter of the inner peripheral surface of the front end of the tapered portion P ... The maximum diameter of the reduced diameter hole Q ... ... cone angle

7878

Claims

1238123 拾、申請專利範圍 1· 一種圓珠筆筆尖，包含有：固持座，係於金屬細管一端之附近部，將距離該一端等距之多處朝内方按壓變形而形成有内方突起者 ;及圓珠’係***前述内方突起與前述一端間之直徑小於0.3mm者，且，藉將前述一端之邊緣朝内方歛合加工而形成有欽合部，又’使前述圓珠之直徑為D及使前述内方突起之内接圓之直徑為F時，滿足0.4SF/DS0.6之關係。 2· —種圓珠筆筆尖，包含有：固持座，係於金屬細管一端之附近部，將距離該一端等距之多處朝内方按壓變形而形成有内方突起者 :及圓珠，係***前述内方突起與前述一端間之直徑在0.2mm以下者，且5藉將前述-端之邊緣朝内方歛合加工而形成有欽合部， 20 又’使前述圓珠之直徑為D及使前述内方突起之内接圓之直控為F時，滿足〇.4sF/DgG.6之關係。 3. —種圓珠筆筆尖，包含有·· 端之附近部，將距離該形而形成有内方突起者1238123 Patent application scope 1. A ballpoint pen nib, which includes: a holder, which is attached to a portion of a thin metal tube near one end, and is deformed by pressing a plurality of equidistant distances from the end inward to form an inner protrusion; The ball is inserted between the inner protrusion and the one end with a diameter of less than 0.3 mm, and the convergence portion is formed by converging the edge of the one end inward, and the diameter of the ball is When D and the diameter of the inscribed circle of the aforementioned inner protrusion is F, the relationship of 0.4SF / DS0.6 is satisfied. 2 · — A kind of ballpoint pen tip, including: a holder, which is near the end of a thin metal tube, and presses and deforms a plurality of equidistant distances from the end to form an inner protrusion: and a ball, which is inserted The diameter between the inner protrusion and the one end is less than 0.2mm, and 5 is formed by converging the edge of the -end inward to form a joint portion, and the diameter of the ball is D and When the direct control of the inscribed circle of the aforementioned inner protrusion is F, the relationship of 0.4 sF / DgG.6 is satisfied. 3. —A kind of ballpoint pen tip, which includes the near part of the tip, and will form the inner protrusion from the shape.

固持座，係於金屬細管一一端專距之多處朝内方按壓變 ;及 79 1238123 拾、申請專利範匱圓珠，係***前述内方突起與前述一端間之直徑小於0.3mm者，且，藉將前述一端之邊緣朝内方歛合加工而形成有欽合部，又，使前述圓珠之直徑為D,並使該圓珠由前述歛合部前端突出之尺寸為G及使該歛合部之内徑為Η時，滿足G/Dg 0.25且0.005mn^ Dm〇1〇mm之關係。 4· 一種圓珠筆筆尖，包含有： ®持座’係於金屬細管一端之附近部，將距離該一端等距之多處朝内方按壓變形而形成有内方突起者 •，及圓珠，係***前述内方突起與前述一端間之直徑 0.2mm以下者，且，藉將前述一端之邊緣朝内方歛合加工而形成 15 有歛合部，又’使W述圓珠之直徑為D，並使該圓珠由前述欽合部前端突出之尺寸為G及使該歛合部之内徑為η時，滿足0/0^0.25且0.〇〇5111111$0—11幺〇〇1〇 — υ·〇1〇Ώιη之關係。 5. —種圓珠筆筆尖，包含有：固持座，係於金屬細管-端之附近部，將距離該一端等距之多處朝内方按壓變形而形忐〜成有内方突起者 ;及端間之直徑The retaining seat is pressed at one end of the thin metal tube at a plurality of distances inward; and 79 1238123, the patent-pending fan ball is inserted between the aforementioned inner protrusion and the aforementioned end with a diameter less than 0.3mm, Furthermore, a joint portion is formed by converging the edge of the one end inward, and the diameter of the ball is D, and the size of the ball protruding from the front end of the convergence portion is G and When the inner diameter of the convergence portion is Η, the relationship of G / Dg 0.25 and 0.005mn ^ Dm0 10mm is satisfied. 4 · A ballpoint pen tip includes: ® Holder is attached to the end of a thin metal tube, and the inner protrusions are formed by pressing and deforming a plurality of equidistant distances from the end toward the inside, and a ball, Insert a diameter of 0.2 mm or less between the inner protrusion and the one end, and form a 15-converged portion by converging the edge of the one end inward, and make the diameter of the ball D D, When the size of the ball protruding from the front end of the joint portion is G and the inner diameter of the convergence portion is η, 0/0 ^ 0.25 and 0.0005111111 $ 0—11 幺〇〇1〇— The relationship of υ · 〇1〇Ώιη. 5. —A kind of ballpoint pen tip, including: a holder, which is attached to the end of a thin metal tube, and is deformed by pressing a plurality of equidistant distances from the end toward the inside to form a shape with an inner protrusion; and the end Interval diameter

圓珠，係***前述内方突起與前述_ 小於0.3mm者， 80 20 拾、申請專利範圍且’藉將前述一端之邊緣朝内方歛合加工而形成有歛合部，又，使前述圓珠之直徑為D，並使前述内方突起之内接圓之直徑為F，且使前述圓珠由前述歛合部前端突出之尺寸為G及使該歛合部之内徑為H時，滿足〇.4‘ F/D^O.6、G/D-0.25，且 HgG 侧匪之關係。 6· —種圓珠筆筆尖，包含有：固持座，係於金屬細管一端之附近部，將距離該一端等距之多處朝内方按壓變形而形成有内方突起者 :及圓珠，係***前述内方突起與前述一端間之直徑〇.2mm以下者，且藉將刖述一端之邊緣朝内方欽合加工而形成有歛合部，又使兩述圓珠座之直徑為D ’並使前述内方突起之内接圓之直徑為F，並使前述圓珠由前述歛合部前端犬出之尺寸為G及使該歛合部之内徑為η時，滿足〇.4$ 〇·6、G/D- 〇 25 且〇〇〇5mmS D— 〇〇1〇血^ 之關係。 •如申睛專利範圍第1、2、3、4、5或6項之圓珠筆筆尖’其中前述金屬細管係由鎳含量1〇重量％以上 ’且維氏硬度350以上之不銹鋼形成。 •如申請專利範圍第7項之圓珠筆筆尖，其中前述不 1238123 拾、申請專利範圍銹鋼係碳素含量〇·〇3重量％以下之鋼 9. _ 沃斯田鐵系不銹種圓珠筆筆尖，包含有·· 固持座，係於金屬細管一端之附 ° ’將距古女端等距之多處朝内方按壓變形而形成有 ° :及内方突起者圓珠，係***前述内方突起與前述小於0.3mm者， —端間之直徑The ball is inserted between the inner protrusion and the _ smaller than 0.3mm, 80 20, the scope of patent application, and 'converging part is formed by convergence processing of the edge of the one end inward, and the circle is formed. When the diameter of the bead is D, and the diameter of the inscribed circle of the inner protrusion is F, and the size of the ball protruding from the front end of the convergence portion is G and the inner diameter of the convergence portion is H, Meet the relationship of 0.4 'F / D ^ O.6, G / D-0.25, and HgG side bandit. 6 · — A kind of ballpoint pen tip, including: a holder, which is near the end of a thin metal tube, and presses and deforms a plurality of equidistant distances from the end toward the inside to form an inner protrusion: and a ball, which is inserted The diameter between the inner protrusion and the one end is 0.2 mm or less, and the convergence portion is formed by processing the edge of the one end toward the inside, and the diameter of the two ball seats is D ′ and When the diameter of the inscribed circle of the inner protrusion is F, and the size of the ball from the front end of the convergence portion is G, and the inner diameter of the convergence portion is η, 0.4 $ is satisfied. -6, G / D- 025 and 005mmS D- 001 blood relationship. • The ballpoint pen tip of item 1, 2, 3, 4, 5, or 6 as claimed in the patent application, wherein the thin metal tube is made of stainless steel with a nickel content of 10% by weight or more and a Vickers hardness of 350 or more. • If the ballpoint pen tip of item 7 of the scope of patent application, among which the aforementioned 1238123 does not apply, the scope of the patent application scope is stainless steel with a carbon content of 0.03% by weight or less. 9. _ Vostian iron series stainless steel ballpoint pen tip, Contains a retainer, attached to one end of a thin metal tube ° 'Pressing and deforming a number of places equidistant from the ancient female end inward to form °: and the inner protruding ball is inserted into the aforementioned inner protruding And the above is less than 0.3mm, the diameter between the ends

10 且’糟將前述一有歛合部，端之邊緣朝内方歛合加工而形成又，前述金屬細管，係由錄含量1G重量％以上，且維氏硬度350以上之不銹鋼形成。 ίο.如申請專利範圍第9項之圓珠筆筆尖，其中前述不銹鋼係礙含量0.03重量％以下之沃斯田鐵系不錄鋼。 15 11’種圓珠筆亦具有一種圓珠筆筆尖’該圓珠筆筆尖包10 In addition, the aforementioned one has a converging portion, and the end edge is formed by inward converging and processing. The metal thin tube is made of stainless steel with a content of 1G% by weight or more and a Vickers hardness of 350 or more. ί. If the ballpoint pen nib of item 9 of the patent application scope, wherein the aforementioned stainless steel hinders Vostian iron-based non-recording steel with a content of 0.03% by weight or less. 15 11 ’ballpoint pens also have a ballpoint pen tip’ The ballpoint pen tip pack

含有：墨水收容管，係用以收容墨水；固持座，係於金屬細管一端之附近部，將距離該一端等距之多處朝内方按壓變形而形成有内方突起者 20 ;及圓珠’係***前述内方突起與前述一端間之直徑小於0.3mm者，且’藉將前述一端之邊緣朝内方歛合加工而形成有歛合部， 82 1238123 拾、申請專利範圍又，使前述圓珠座之直徑為D，並使前述内方突起之内接圓之直徑為F，且使前述圓珠由前述歛合部前端突出之尺寸為G及使該歛合部之内徑為]^時，滿足〇·4^ * F/1^0.6、G/D^〇 25 且〇〇〇5inm$D—Η^〇〇ι〇馳之 ) 5 關係。 12>種圓珠筆亦具有一種圓珠筆筆尖，該圓珠筆筆尖包含有：墨水收容管，係用以收容墨水； · 固持座，係於金屬細管一端之附近部，將距離該 1〇一端等距之多處朝内方按壓變形而形成有内方突起者 ;及圓珠，係***前述内方突起與前述一端間之直徑〇.2mm以下者，且，藉將前述一端之邊緣朝内方歛合加工而形成 15 有歛合部，又，使前述圓珠座之直徑為D，並使前述内方突起 · 之内接圓之直徑為F，且使前述圓珠由前述歛合部前端突出之尺寸為G及使該歛合部之内徑為η時，滿足〇·4 $ F/DS 0·6、G/D- 0.25且〇.〇〇5mmg D— Hg 〇.〇l〇mm2 2〇關係。 13.如申請專利範圍第11或丨2項之圓珠筆，其中前述墨水收容管所收容之墨水係水性墨水，且該水性墨水係於在25°C之剪切速度MJsec·1中之黏度為2〇mPa · sec 以上且600Pa · sec以下，並且於在25 〇C之剪切速度 83 1238123 拾 14. 5 10 15 20 15. 16. 、申請專利範圍 384sec 中之黏度為 105mPa · sec 以上且 120Pa · sec 以下。一種圓珠筆筆尖，包含有：圓珠；及固持座，係用以固持圓珠，前述固持座，具有：圓珠室，係用以於一端收納並包圍支撐前述圓珠以使其可自由旋轉者·，及鲁墨水孔’係由前述圓珠室貫穿圓珠相反側之另一端以供給墨水於前述圓珠者，如述墨水孔，至少具有：墨水流通孔’係由前述圓珠室朝圓珠相反側設置以使墨水朝圓珠室流通者；及墨水引導孔，係設置於前述墨水流通孔之圓珠相反側，以朝前述墨水流通孔導入墨水者，在於前述固持座之圓珠側外周，形成有朝圓珠側 · 細小直徑之錐部之圓珠筆筆尖中，前述圓珠之外徑小於〇.3mm，且前述墨水引導孔之與前述墨水流通孔之連接邠，係構成朝圓珠側縮小直徑而呈錐狀之直徑縮小孔，前述直徑縮小孔之最大直徑為〇4mm以上，且，前述直徑縮小孔之錐角度為3〇度以上9〇度以下。如申請專利範圍第14項之圓珠筆筆尖，#中前述圓珠座之錐部之錐角度係35度以上。一種圓珠筆筆尖，包含有； 84 1238123 拾、申請專利fg圍錐部，係將圓柱材一端之^ 鳊之外周切削成頭細而形成者；圓珠室，係切削前述錐部之内周而形成者； ‘ 墨水引導孔，係由該圓柱材另_端穿孔至前述圓 . 5 珠室附近而形成者；墨水流通孔’係貫穿前述圓珠室與前述墨水引導孔間而形成者·，及圓珠，係***前述圓珠室内之直徑小於。·3麵者， · 且，藉將前述一端之邊緣朝内方歛合加卫而形成 10 有歛合部，又，使前述圓珠之直徑為!）及使前述墨水流通孔之直徑為F時，滿足0.4gF/Dg〇62關係。 17. —種圓珠筆筆尖，包含有：錐部，係將圓柱材一端之外周切削為頭細而形成 15 者；圓珠至’係切削前述錐部内周而形成者； · 墨水引導孔，係由該圓柱材另一端穿孔至前述圓珠室之附近而形成者；墨水流通孔，係貫穿前述圓珠室與前述墨水引導 2〇孔之間而形成者；及圓珠’係***前述圓珠室内之直徑小於〇.3mm者，且’藉將前述一端之邊緣朝内方歛合加工而形成有欽合部，又’使前述圓珠之直徑為D，並使該圓珠由前述歛 85 1238123 拾、申請專利範圍合部前端突出之尺寸為G及使該歛合部之内徑為Η時，滿足 G/_.25_05mn^Dm〇i〇mm 之關係。 18· 一種圓珠筆筆尖，包含有·· ♦ 錐部’係將圓柱材一端之外周切削為頭細而形& " 者；圓珠室，係切削前述錐部内周而形成者，· 墨水引導孔，係由該圓柱材另一端穿孔至前述圓珠室之附近而形成者；墨水流通孔，係貫穿前述圓珠室與前述墨水引導孔之間而形成者；及圓珠，係***前述圓珠室内之直徑小於〇.3mm者，且’藉將前述一端之邊緣朝内方歛合加工而形成有歛合部，又，使前述圓珠之直徑為D，並使該圓珠由前述歛合部前端突出之尺寸為〇及使該歛合部之内徑為 Η時，滿足0.4SF/Dg〇.6、G/D^〇 25且〇〇〇5mm$D_ H$ 0.010mm之關係。潘钃 86Contains: an ink containing tube for containing ink; a holding seat, which is adjacent to one end of a thin metal tube, presses and deforms a plurality of equidistant distances from the end toward the inside to form an inner protrusion 20; and a ball 'It is inserted between the inner protrusion and the one end whose diameter is less than 0.3mm, and' converging part is formed by agglomerating the edge of the one end inward, 82 1238123 The diameter of the ball seat is D, and the diameter of the inscribed circle of the inner protrusion is F, and the size of the ball protruding from the front end of the convergence portion is G, and the inner diameter of the convergence portion is] In this case, the relationship of 0.4 ^ * F / 1 ^ 0.6, G / D ^ 25 and 005 inm $ D-^ ^ 〇〇〇〇 should be satisfied). 12 > The ballpoint pen also has a ballpoint pen tip, which includes: an ink containing tube for containing ink; and a holding seat, which is located near one end of the thin metal tube and will be equidistant from the 10 end. Those with inner protrusions formed by pressing and deforming inwardly; and beads, which are inserted between the inner protrusion and the one end with a diameter of 0.2 mm or less, and are processed by converging the edge of the one end inward. 15 has a convergence portion, and the diameter of the ball seat is D, and the diameter of the inscribed circle of the inner protrusion · is F, and the size of the ball protruding from the front end of the convergence portion When G is G and the inner diameter of the convergence portion is η, the relationship of 0.4 F / DS 0.6, G / D-0.25, and 0.005 mmg D—Hg 0.001 mm2 2 is satisfied. . 13. The ball-point pen according to item 11 or 2 of the scope of patent application, wherein the ink contained in the aforementioned ink containing tube is a water-based ink, and the viscosity of the water-based ink at a shear rate of 25 ° C MJsec · 1 is 2 〇mPa · sec or more and 600Pa · sec or less, and a shear rate of 83 1238123 at 25 ℃ to pick up 14. 5 10 15 20 15. 16. The viscosity in the patent application range of 384sec is 105 mPa · sec or more and 120 Pa · sec or less. A ballpoint pen nib includes: a ball; and a holder for holding the ball. The holder includes: a ball chamber for receiving and enclosing the ball at one end so as to be able to rotate freely. ·, And Lu ink hole 'is the one through the ball room through the other end of the opposite side of the ball to supply ink to the ball, such as the ink hole, at least: The ink flow hole' is from the ball room to the circle The opposite side of the beads is provided so that the ink flows toward the bead chamber; and the ink guide hole is provided on the opposite side of the beads of the ink circulation hole to introduce the ink toward the ink circulation hole, which is on the side of the ball of the holding seat. In the outer periphery, a ballpoint pen tip with a tapered portion facing the ball side and a small diameter is formed, the outer diameter of the ball is less than 0.3 mm, and the connection between the ink guide hole and the ink circulation hole is a ball. The diameter-reduced hole having a tapered shape on the side is reduced in diameter, the maximum diameter of the diameter-reduced hole is 0.4 mm or more, and the cone angle of the diameter-reduced hole is 30 ° or more and 90 ° or less. For example, the ballpoint pen tip of item 14 of the scope of patent application, the cone angle of the cone part of the aforementioned ball seat in # is more than 35 degrees. A ballpoint pen nib includes: 84 1238123 The patent application fg surrounding cone is formed by cutting the outer periphery of one end of a cylindrical material into a thin head; the ball chamber is formed by cutting the inner periphery of the aforementioned cone 'Ink guide holes are formed by perforating the other end of the cylindrical material to the aforementioned circle. 5 In the vicinity of the bead chamber; Ink circulation holes' are formed by penetrating between the aforementioned bead chamber and the aforementioned ink guide hole, and The ball is smaller than the diameter inserted into the bead chamber. · Three faces, and ······························································································ 借In this case, the 0.4gF / Dg062 relationship is satisfied. 17. —A kind of ballpoint pen tip, including: a cone, which is formed by cutting the outer circumference of one end of a cylindrical material into a thin head to form 15; a ball to 'is formed by cutting the inner periphery of the aforementioned cone; · an ink guide hole, which is formed by The other end of the cylindrical material is perforated to the vicinity of the aforementioned bead chamber; the ink circulation hole is formed by penetrating between the aforementioned bead chamber and the aforementioned ink guide 20 hole; and the bead 'is inserted into the aforementioned bead chamber If the diameter is less than 0.3mm, and the 'joint part is formed by converging the edge of the one end inward, and the diameter of the ball is D, and the ball is made from the converging 85 1238123 When the size of the front end of the joint portion of the patent application range is G and the inner diameter of the convergence portion is Η, the relationship of G / _. 25_05mn ^ Dm0i0mm is satisfied. 18 · A ballpoint pen tip containing: · ♦ The tapered portion is formed by cutting the outer periphery of one end of a cylindrical material into a thin and thin head & " The ball chamber is formed by cutting the inner periphery of the aforementioned tapered portion, and the ink guide The hole is formed by perforating the other end of the cylindrical material to the vicinity of the aforementioned bead chamber; the ink circulation hole is formed by penetrating between the aforementioned bead chamber and the aforementioned ink guide hole; and the ball is inserted into the aforementioned circle If the diameter in the bead chamber is less than 0.3mm, and a convergence portion is formed by converging the edge of the one end inward, and the diameter of the ball is D, and the ball is converged by the aforesaid When the size of the front end of the joint portion is 0 and the inner diameter of the convergence portion is Η, the relationship of 0.4SF / Dg0.6, G / D ^ 25, and 0.05mm $ D_H $ 0.010mm is satisfied. Pan 钃 86