JP4754289B2 - Multi-core writing instrument - Google Patents

Multi-core writing instrument Download PDF

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JP4754289B2
JP4754289B2 JP2005213898A JP2005213898A JP4754289B2 JP 4754289 B2 JP4754289 B2 JP 4754289B2 JP 2005213898 A JP2005213898 A JP 2005213898A JP 2005213898 A JP2005213898 A JP 2005213898A JP 4754289 B2 JP4754289 B2 JP 4754289B2
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writing
rear end
shaft
opening
pen tip
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JP2007030239A (en
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正史 安藤
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Pilot Ink Co Ltd
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Description

本発明は、多芯筆記具に関する。詳細には、軸筒内に複数の筆記体を収容した多芯筆記具に関する。   The present invention relates to a multi-core writing instrument. In detail, it is related with the multi-core writing instrument which accommodated the several writing body in the axial cylinder.

従来、この種の多芯筆記具において、特許文献１には、「軸筒の尾端側外周面に穿設された複数個の窓孔から作動子（本願の操作体）の押圧部が径方向に突出し、この押圧部を押圧して軸線方向に前進させると軸筒内に収容されたボールペン芯とシャープペンシル中具からなる複数本の書記体のいずれか１本の書記体が前進してボールペンチップないしシャープペンシルの先金が軸筒の先端開口から突出するとともに前進位置にある他の書記体を後退させるシャープペンシルとボールペンの多芯筆記具であって、前記シャープペンシル中具が後退するときに該シャープペンシル中具用の作動子が衝合する軸筒の受け面と該作動子の間に緩衝部材が介装されたことを特徴とするシャープペンシルとボールペンの多芯筆記具。」が開示されている。さらに、特許文献１には、受け面に弾力性に富んだゴム板からなる緩衝部材が貼り付けられる構成が記載されている。 Conventionally, in this type of multi-core writing instrument, Patent Document 1 states that “the pressing portion of the operating element (the operating body of the present application) is in the radial direction from a plurality of window holes formed in the outer peripheral surface on the tail end side of the shaft tube. When the pressing part is pressed to advance in the axial direction, any one of a plurality of writing bodies composed of a ballpoint pen core and a mechanical pencil center accommodated in the shaft cylinder is advanced to the ballpoint pen. A tip of a pencil or a tip of a mechanical pencil protrudes from the tip opening of the shaft tube, and is a multi-core writing instrument of a mechanical pencil and a ballpoint pen that retreats other letters in an advanced position, and when the mechanical pencil center is retracted A multi-core writing instrument of a mechanical pencil and a ballpoint pen characterized in that a buffer member is interposed between the receiving surface of the shaft cylinder with which the actuator for the mechanical pencil middle tool abuts and the actuator. ingFurthermore, Patent Document 1 describes a configuration in which a cushioning member made of a rubber plate rich in elasticity is attached to a receiving surface.

実用新案登録第２５１１７４２号公報Utility Model Registration No. 2511742

前記特許文献１の多芯筆記具は、緩衝部材が、作動子の後端と軸筒内面の受け面との間に設けられる構成であるため、緩衝部材を配置するスペースに制限があり、緩衝部材として衝撃吸収性能が低いゴム板等を採用せざるを得ない。そのため、筆記体がリターンする際（即ちペン先突出状態からペン先没入状態へ移行する際）の十分な衝撃吸収性能が得られない。   The multi-core writing instrument of Patent Document 1 has a configuration in which the buffer member is provided between the rear end of the actuator and the receiving surface of the inner surface of the shaft cylinder. As such, a rubber plate having a low impact absorbing performance must be employed. Therefore, sufficient impact absorption performance cannot be obtained when the cursive returns (that is, when the pen tip protrudes from the pen tip protruding state to the pen tip immersive state).

特に、筆記体が、インキ収容管内に、低粘度油性インキまたは剪断減粘性を有する水性インキが収容され、且つ、前記インキの後端に、該インキの消費に伴い前進する追従体が収容されたボールペンである場合、筆記体リターン時の大きな衝撃により、インキ及び追従体が後退してインキ収容管の後端開口部から漏出したり、ペン先から空気が入り込み、筆記不能となるおそれがある。 In particular, the writing body contains a low-viscosity oil-based ink or a water-based ink having shear thinning viscosity in an ink storage tube, and a follower that moves forward with consumption of the ink at the rear end of the ink. In the case of a ballpoint pen, due to a large impact at the time of returning the writing body, the ink and the follower may retreat and leak from the rear end opening of the ink containing tube, or air may enter from the pen tip and become unwritable.

本発明は、前記従来の問題点を解決するものであって、筆記体リターン時に大きな衝撃が筆記体に加わることを回避できる多芯筆記具を提供しようとするものである。尚、本発明において、「前」とはペン先側を指し、「後」とは反対側を指す。 The present invention is intended to solve the above-described conventional problems, and to provide a multi-core writing instrument that can prevent a large impact from being applied to the cursive when the cursive is returned. In the present invention, “front” refers to the pen tip side, and “rear” refers to the opposite side.

[１]本発明は、軸筒２内に複数の筆記体６を前後方向に移動可能に収容し、前記各々の筆記体６を弾発体８により後方に付勢し、前記各々の筆記体６の後端に操作体７を連結し、軸筒２の側壁に前後方向に延びる複数の窓孔４１を径方向に貫設し、前記各々の窓孔４１から径方向外方に前記各々の操作体７を突出させ、一つの操作体７を窓孔４１に沿って前方にスライドさせることにより、その一つの操作体７に連結された筆記体６のペン先６１を軸筒２の前端孔３１から突出させるとともに、先に突出状態にあった他の筆記体６のペン先６１を軸筒２内に没入させる多芯筆記具であって、ペン先突出状態の筆記体６を後方に付勢する弾発体８の弾発力を、３０グラム〜８０グラム（好ましくは４０グラム〜７０グラム）の範囲に設定し、各々の筆記体６を軸筒２内から取り外し交換可能に構成するとともに、軸筒２の後端に、窓孔４１を後方に開口させる開口部４２を設け、前記開口部４２を通して操作体７を、軸筒２内から取り外し可能且つ軸筒２内に挿入可能に構成し、前記開口部４２を開閉する蓋部５を軸筒２の後端部に設け、前記蓋部５に、ペン先没入状態の筆記体６の操作体７が当接する当接壁部５１を設けたこと（請求項１）を要件とする。 [1] In the present invention, a plurality of writing bodies 6 are accommodated in the shaft cylinder 2 so as to be movable in the front-rear direction, and each of the writing bodies 6 is urged rearward by a projectile body 8 to each of the writing bodies. The operating body 7 is connected to the rear end of the shaft 6, a plurality of window holes 41 extending in the front-rear direction are provided in the side wall of the shaft cylinder 2 in the radial direction, and each of the window holes 41 is radially outward from the window holes 41. By projecting the operating body 7 and sliding one operating body 7 forward along the window hole 41, the pen tip 61 of the writing body 6 connected to the one operating body 7 is inserted into the front end hole of the shaft cylinder 2. 31 is a multi-core writing instrument that causes the pen tip 61 of the other writing body 6 that has been in the protruding state to be immersed in the shaft cylinder 2 and biases the writing body 6 in the protruding state of the pen tip backward. the resilient force of the resilient body 8, set in the range of 30 g to 80 g (preferably 40 g to 70 g), each The writing body 6 is configured to be removable from the inside of the shaft tube 2 and replaceable, and an opening 42 is provided at the rear end of the shaft tube 2 to open the window hole 41 rearward. The lid 5 is configured to be removable from the shaft cylinder 2 and insertable into the shaft cylinder 2, and the lid portion 5 that opens and closes the opening 42 is provided at the rear end portion of the shaft cylinder 2. It is a requirement that an abutting wall portion 51 with which the operating body 7 of the writing body 6 abuts is provided (claim 1).

前記多芯筆記具１（請求項１）は、筆記体６が後方にリターンした際、筆記体６に大きな衝撃が加わることを回避でき、特に、筆記体６がボールペンの場合、リターン時の大きな衝撃でインキが外部に漏出したり、ペン先６１から空気が入り筆記不能となるおそれがない。また、前記多芯筆記具１（請求項１）は、筆記体６を適正な位置まで確実に戻すことができ、筆記体６の円滑な出没作動が維持される。また、前記多芯筆記具１（請求項１）は、筆記体６が後方にリターンした際に発生する衝撃音を和らげることができる。 The multi-core writing instrument 1 (Claim 1) can prevent a large impact from being applied to the writing body 6 when the writing body 6 returns to the rear. In particular, when the writing body 6 is a ballpoint pen, a large impact at the time of return. Therefore, there is no possibility that ink leaks to the outside or air enters from the pen tip 61 and writing becomes impossible. Further, the multi-core writing instrument 1 (Claim 1) can reliably return the writing body 6 to an appropriate position, and the smooth operation of the writing body 6 is maintained. In addition, the multi-core writing instrument 1 (Claim 1) can soften the impact sound generated when the writing body 6 returns backward.

もし、ペン先突出状態の筆記体６を後方に付勢する弾発体８の弾発力が３０グラムよりも小さい場合、筆記体６を適正な位置まで確実に戻すことができず、筆記体６同士の接触が生じ、筆記体６の円滑な出没作動が阻害されるおそれがある。一方、もし、ペン先突出状態の筆記体６を後方に付勢する弾発体８の弾発力が８０グラムよりも大きい場合、筆記体６が後方にリターンした際、筆記体６に大きな衝撃が加わり、特に、筆記体６がボールペンの場合、インキが外部に漏出したり、ペン先６１から空気が入り筆記不能となるおそれがある。その上、もし、ペン先突出状態の筆記体６を後方に付勢する弾発体８の弾発力が８０グラムよりも大きい場合、筆記体６が後方にリターンした際、耳障りな大きな衝撃音が発生するおそれがある。 If the resilience of the projectile 8 that biases the curled body 6 in the protruding state of the nib backward is less than 30 grams, the cursive body 6 cannot be reliably returned to an appropriate position, and the cursive body There is a possibility that the contact between the six members occurs, and the smooth operation of the writing body 6 is hindered. On the other hand, if the resilience of the projectile 8 that biases the pen 6 in the protruding state is greater than 80 grams, when the cursive 6 returns to the rear, a large impact is applied to the cursive 6. In particular, when the writing body 6 is a ballpoint pen, ink may leak out or air may enter from the pen tip 61, making writing impossible. In addition, if the resilience of the projectile 8 that biases the pen 6 in the protruding state of the pen 6 backward is greater than 80 grams, an irritating loud impact sound when the cursive 6 returns backward. May occur.

［２］前記多芯筆記具１において、ペン先没入状態の筆記体６を後方に付勢する弾発体８の弾発力を、１グラム〜２５グラム（好ましくは５グラム〜２０グラム）の範囲に設定したこと（請求項２）が好ましい。 [2] In the multi-core writing instrument 1, the resilience of the projectile 8 that urges the pen-immersed cursive 6 backward is in the range of 1 to 25 grams (preferably 5 to 20 grams). (Claim 2) is preferable.

前記多芯筆記具１（請求項２）は、筆記体６が後方にリターンした際、筆記体６に大きな衝撃が加わることを回避でき、特に、筆記体６がボールペンの場合、リターン時の大きな衝撃でインキが外部に漏出したり、ペン先６１から空気が入り筆記不能となるおそれがない。また、前記多芯筆記具１（請求項２）は、筆記体６を適正な位置まで確実に戻すことができ、筆記体６の円滑な出没作動が維持される。また、前記多芯筆記具１（請求項２）は、筆記体６が後方にリターンした際に発生する衝撃音を和らげることができる。 The multi-core writing instrument 1 (Claim 2) can prevent a large impact from being applied to the writing body 6 when the writing body 6 returns to the rear. In particular, when the writing body 6 is a ballpoint pen, a large impact at the time of return. Therefore, there is no possibility that ink leaks to the outside or air enters from the pen tip 61 and writing becomes impossible. Further, the multi-core writing instrument 1 (Claim 2) can reliably return the writing body 6 to an appropriate position, and the smooth operation of the writing body 6 is maintained. Moreover, the multi-core writing instrument 1 (Claim 2) can soften the impact sound generated when the writing body 6 returns backward.

もし、ペン先没入状態の筆記体６を後方に付勢する弾発体８の弾発力が１グラムよりも小さい場合、筆記体６を適正な位置まで確実に戻すことができず、筆記体６同士の接触が生じ、筆記体６の円滑な出没作動が阻害されるおそれがある。一方、もし、ペン先没入状態の筆記体６を後方に付勢する弾発体８の弾発力が２５グラムよりも大きい場合、筆記体６が後方にリターンした際、筆記体６に大きな衝撃が加わり、特に、筆記体６がボールペンの場合、インキが外部に漏出したり、ペン先６１から空気が入り筆記不能となるおそれがある。その上、もし、ペン先没入状態の筆記体６を後方に付勢する弾発体８の弾発力が２５グラムよりも大きい場合、筆記体６が後方にリターンした際、耳障りな大きな衝撃音が発生するおそれがある。 If the resilience of the bullet 8 that urges the nib-immersed cursive 6 backward is less than 1 gram, the cursive 6 cannot be reliably returned to the proper position, and the cursive There is a possibility that the contact between the six members occurs, and the smooth operation of the writing body 6 is hindered. On the other hand, if the resilience of the projectile 8 that urges the nib-immersed cursive 6 backward is greater than 25 grams, when the cursive 6 returns to the rear, a large impact is applied to the cursive 6. In particular, when the writing body 6 is a ballpoint pen, ink may leak out or air may enter from the pen tip 61, making writing impossible. In addition, if the resilience of the projectile 8 that urges the pen-immersed cursive 6 backward is greater than 25 grams, an irritating loud impact sound when the cursive 6 returns backwards. May occur.

前記多芯筆記具１（請求項１）は、開口部４２を通して各々の操作体７が交換可能となるとともに、前記筆記体６のリターン時の衝撃を小さくできることにより、筆記体６のリターンが繰り返され、当接壁部５１に操作体７が繰り返し当接しても、操作体７を交換しない時に蓋部５が外れ、開口部４２が開口してしまうおそれがない。また、特に、前記多芯筆記具１（請求項１）は、ペン先没入状態の筆記体６を後方に付勢する弾発体８の弾発力を、１グラム〜２５グラムの範囲に設定したこと（請求項２）により、蓋部５を開口部４２から取り除き、開口部４２を開口した際、没入状態の筆記体６の後端の操作体７が、弾発体８の後方付勢により開口部４２から後方に突出されるため、軸筒２後端の開口部４２を下向きにしなくても、操作体７を容易に取り出すことができる。尚、前記筆記体６は、操作体７と連結状態で、軸筒２の後端の開口部４２を通して交換可能に構成することが好ましいが、軸筒２に前方に開口する開口部を設け、その開口部を通して交換してもよい。 In the multi-core writing instrument 1 (Claim 1 ), each operating body 7 can be exchanged through the opening 42, and the impact at the time of returning the writing body 6 can be reduced, whereby the return of the writing body 6 is repeated. Even if the operating body 7 repeatedly comes into contact with the abutting wall portion 51, there is no possibility that the lid portion 5 is removed and the opening 42 is opened when the operating body 7 is not replaced. In particular, in the multi-core writing instrument 1 (Claim 1 ), the resilience of the projectile 8 that urges the pen-immersed cursive 6 backward is set in the range of 1 to 25 grams. (Claim 2), when the lid 5 is removed from the opening 42 and the opening 42 is opened, the operating body 7 at the rear end of the immersed writing body 6 is caused by the rear urging of the bullet 8 Since it protrudes rearward from the opening 42, the operating body 7 can be easily taken out without the opening 42 at the rear end of the shaft cylinder 2 being directed downward. The writing body 6 is preferably configured to be exchangeable through the opening 42 at the rear end of the shaft cylinder 2 in a state of being connected to the operating body 7, but the shaft cylinder 2 is provided with an opening opening forward, It may be exchanged through the opening.

請求項１の多芯筆記具によれば、筆記体が後方にリターンした際、筆記体に大きな衝撃が加わることを回避でき、しかも、筆記体を適正な位置まで確実に戻すことができ、さらに、筆記体が後方にリターンした際の衝撃音を和らげることができる。 According to the multi-core writing instrument of claim 1, when the writing body returns backward, it can be avoided that a large impact is applied to the writing body, and the writing body can be surely returned to an appropriate position, The impact sound when the cursive returns to the rear can be softened.

請求項２の多芯筆記具によれば、筆記体が後方にリターンした際、筆記体に大きな衝撃が加わることを回避でき、しかも、筆記体を適正な位置まで確実に戻すことができ、さらに、筆記体が後方にリターンした際の衝撃音が和らげることができる。 According to the multi-core writing instrument of claim 2, when the writing body returns backward, it can be avoided that a large impact is applied to the writing body, and the writing body can be reliably returned to an appropriate position, The impact sound when the cursive returns to the rear can be softened.

請求項１の多芯筆記具によれば、開口部を通して各々の操作体が交換可能となるとともに、前記筆記体リターン時の衝撃を小さくできることにより、筆記体のリターンが繰り返されても、蓋部が外れ、開口部が開口するおそれがない。 According to the multi-core writing instrument of claim 1 , each operating body can be exchanged through the opening, and the impact at the time of returning the writing body can be reduced, so that even if the return of the writing body is repeated, the lid portion can be There is no possibility that it will come off and the opening will open.

図１乃至図３に本発明の実施の形態を示す。
本実施の形態の多芯筆記具１は、軸筒２内に複数本（具体的には２本）の筆記体６が前後方向に移動可能に収容される。また、前記軸筒２内には複数（具体的には２個）の弾発体８（具体的には圧縮コイルスプリング）が収容される。前記各々の筆記体６は、前記各々の弾発体８により後方に付勢されている。 1 to 3 show an embodiment of the present invention.
In the multi-core writing instrument 1 of the present embodiment, a plurality (specifically, two) of the writing bodies 6 are accommodated in the shaft cylinder 2 so as to be movable in the front-rear direction. Also, the plurality in the axial cylinder 2 bullet inducer 8 (specifically the compression coil springs) of (specifically, two) is accommodated. Each of the writing bodies 6 is urged rearward by each of the bullet bodies 8.

（軸筒）
前記軸筒２は、先細状の円筒体からなる前軸３と、該前軸３の後端部と螺合または圧入により取り付けられる円筒状の後軸４とからなる。前記前軸３の前端には、筆記体６のペン先６１が突出可能な前端孔３１が軸方向に貫設される。前記前軸３及び後軸４は、合成樹脂（例えば、ポリカーボネイト等）の射出成形により得られる。 (Shaft tube)
The shaft cylinder 2 includes a front shaft 3 formed of a tapered cylindrical body, and a cylindrical rear shaft 4 attached to the rear end portion of the front shaft 3 by screwing or press-fitting. At the front end of the front shaft 3, a front end hole 31 through which the pen tip 61 of the writing body 6 can protrude is provided in the axial direction. The front shaft 3 and the rear shaft 4 are obtained by injection molding of a synthetic resin (for example, polycarbonate).

前記後軸４の後部の側壁には、複数本（具体的には２本）の前後方向に延びる細長状の窓孔４１が、径方向に貫設される。前記２本の窓孔４１は、互いに、軸線に対して対称の位置に形成される。また、前記後軸４の後端部には、軸方向に貫通し且つ径方向外方に開口する開口部４２が形成される。前記開口部４２は、後軸４の後端（即ち軸筒２の後端）において窓孔４１と連通され、それにより、窓孔４１後端が後方に切り欠かれ、後方に開口されている。一方、前記窓孔４１の前端は常時閉鎖されている。   A plurality (specifically, two) elongated window holes 41 extending in the front-rear direction are provided in a radial direction in the rear side wall of the rear shaft 4. The two window holes 41 are formed at positions symmetrical with respect to the axis. An opening 42 is formed at the rear end portion of the rear shaft 4 so as to penetrate in the axial direction and open radially outward. The opening 42 communicates with the window hole 41 at the rear end of the rear shaft 4 (that is, the rear end of the shaft cylinder 2), whereby the rear end of the window hole 41 is notched rearward and opened rearward. . On the other hand, the front end of the window hole 41 is always closed.

また、前記後軸４の窓孔４１の相互間の側壁内面には、前後方向に延びるリブよりなる係止壁部４３が形成され、前記係止壁部４３に、ペン先６１が突出した際の筆記体６の操作体７の後端が係止される。   Further, a locking wall portion 43 made of a rib extending in the front-rear direction is formed on the inner surface of the side wall between the window holes 41 of the rear shaft 4, and the pen tip 61 protrudes from the locking wall portion 43. The rear end of the operating body 7 of the cursive body 6 is locked.

前記後軸４の窓孔４１の相互間の側壁外面には、クリップ４４が設けられる。   A clip 44 is provided on the outer surface of the side wall between the window holes 41 of the rear shaft 4.

（蓋部）
前記後軸４の後端部には、前記開口部４２を開閉自在にする蓋部５が回動自在に設けられる。前記蓋部５の一端部は、クリップ４４基部に、ヒンジ部５２により回動自在に接続される。前記ヒンジ部５２は、ペン先下向きでクリップ４４を正面視したときのクリップ４４の左右方向に延設され、それにより、前記蓋部５は、略前後方向に回動自在となる。前記蓋部５の前面には、当接壁部５１が形成される。前記当接壁部５１に、没入状態の筆記体６の後端に連結された操作体７の後端が、衝止される。本実施の形態では、前記ヒンジ部５２は、具体的には、回動軸により回動自在に接続される構成が採用されているが、これ以外にも、屈曲変形可能な可撓性を有する連結部または薄肉部により一体に接続される構成であってもよい。 (Cover)
At the rear end portion of the rear shaft 4, a lid portion 5 that can open and close the opening portion 42 is provided rotatably. One end of the lid 5 is pivotally connected to the base of the clip 44 by a hinge 52. The hinge portion 52 extends in the left-right direction of the clip 44 when the clip 44 is viewed from the front with the pen tip facing downward, whereby the lid portion 5 is rotatable in a substantially front-rear direction. A contact wall 51 is formed on the front surface of the lid 5. The rear end of the operating body 7 connected to the rear end of the immersive writing body 6 is bumped to the contact wall 51. In the present embodiment, specifically, the hinge portion 52 is configured to be pivotably connected by a pivot shaft. However, in addition to this, the hinge portion 52 has flexibility capable of bending deformation. The structure connected integrally by a connection part or a thin part may be sufficient.

前記蓋部５の他端部の前面には、係合部５３が設けられる（具体的には係合凹部または係合孔部が形成される）。後軸４の後端には、前記係合部５３と係合可能な被係合部４５が設けられる（具体的には係合凸部が突設される）。前記係合部５３（係合凹部または係合孔部）の内面には、内向突起が形成され、一方、前記被係合部４５（係合凸部）の外面には、前記内向突起と乗り越え係止可能な外向突起が形成される。   An engagement portion 53 is provided on the front surface of the other end portion of the lid portion 5 (specifically, an engagement recess or an engagement hole portion is formed). An engaged portion 45 that can be engaged with the engaging portion 53 is provided at the rear end of the rear shaft 4 (specifically, an engaging convex portion protrudes). An inward projection is formed on the inner surface of the engagement portion 53 (engagement recess or engagement hole), while the outer surface of the engaged portion 45 (engagement projection) climbs over the inward projection. A lockable outward projection is formed.

前記係合部５３と前記被係合部４５とは、蓋部５が開口部４２を閉鎖した際、互いに係合状態にあり（具体的には内向突起と外向突起が乗り越え係止状態にあり）、弾発体８の後方への付勢による操作体７と蓋部５前面の当接壁部５１との当接では、その係合状態は解除されず、蓋部５が開くことはない。   The engaging portion 53 and the engaged portion 45 are in an engaged state with each other when the lid portion 5 closes the opening 42 (specifically, the inward projection and the outward projection are overcoming and locked) ) When the operating body 7 and the contact wall portion 51 on the front surface of the lid portion 5 are brought into contact with each other by the rearward urging of the projectile body 8, the engaged state is not released and the lid portion 5 is not opened. .

また、前記係合部５３と被係合部４５の構成以外にも、前記係合部５３が係合凸部よりなり、前記被係合部４５が係合凹部または係合孔部からなる構成でもよい。 In addition to the configuration of the engaging portion 53 and the engaged portion 45, the engaging portion 53 is an engaging convex portion, and the engaged portion 45 is an engaging concave portion or an engaging hole portion. But you can.

（筆記体）
前記各々の筆記体６は、ボールペンレフィルであり、前端にボールが回転可能に抱持されたボールペンチップ（即ちペン先６１）と、該ボールペンチップを前端に備え且つ後端が開口されたインキ収容管６２とからなる。前記インキ収容管６２の内部には、剪断減粘性を有する水性ゲルインキ、低粘度の水性インキ、低粘度の油性インキ、または高粘度の油性インキからなるインキが収容される。前記インキが、剪断減粘性を有する水性ゲルインキ、低粘度の水性インキ、または低粘度の油性インキの場合、インキ収容管６２内のインキの後端には、インキの消費に伴い前進する高粘度流体からなる追従体が充填される。 (Cursive)
Each of the writing bodies 6 is a ball-point pen refill, and includes a ball-point pen tip (that is, a pen tip 61) in which a ball is rotatably held at the front end, and an ink container having the ball-point pen tip at the front end and having an open rear end. A tube 62. Inside the ink storage tube 62 is accommodated an ink composed of a water-based gel ink having shear thinning viscosity, a low-viscosity aqueous ink, a low-viscosity oil-based ink, or a high-viscosity oil-based ink. When the ink is a water-based gel ink having shear thinning viscosity, a low-viscosity water-based ink, or a low-viscosity oil-based ink, a high-viscosity fluid that advances as the ink is consumed is disposed at the rear end of the ink in the ink containing tube 62. A follower consisting of is filled.

また、前記ボールペンチップは、前端に回転可能に抱持されたボールを弾発体等により前方に付勢し、前端縁部の内面にボールを密接させる構成でもよい。また、ボールペンチップは、インキ収容管６２の前端開口部に圧入等により直接、取り付けてもよいが、本実施の形態ではペン先ホルダーを介してインキ収容管６２の前端開口部に固着される。 Further, the ballpoint pen tip may be configured such that a ball held rotatably at the front end is urged forward by a projectile or the like, and the ball is brought into close contact with the inner surface of the front end edge portion. The ballpoint pen tip may be directly attached to the front end opening of the ink containing tube 62 by press fitting or the like, but in this embodiment, it is fixed to the front end opening of the ink containing tube 62 via the pen tip holder.

（操作体）
前記各々の筆記体６の後端（即ちインキ収容管６２の後端開口部）には、操作体７が取り付けられる。前記各々の操作体７は、後端部に形成され且つ軸筒２の窓孔４１から外部に突出する操作部７１と、該操作部７１の反対側に設けられる前側突出部７２と、該操作部７１の反対側の前側突出部７２の後方に設けられる後側突出部７３と、前端部に形成され且つインキ収容管６２の後端開口部に嵌入される嵌入部７４と、該嵌入部７４の後方に形成される鍔部７５とを備える。前記嵌入部７４は、インキ収容管６２の後端開口部に嵌入された際、インキ収容管６２の後端開口部を完全には塞がず、インキ収容管６２の内部と外部とを通気可能にする。また、前記鍔部７５の前面には、弾発体８の後端が係止される。 (Operation body)
An operation body 7 is attached to the rear end of each of the writing bodies 6 (that is, the rear end opening of the ink containing tube 62). Each of the operating bodies 7 includes an operating portion 71 formed at the rear end and projecting outside from the window hole 41 of the shaft cylinder 2, a front projecting portion 72 provided on the opposite side of the operating portion 71, A rear projecting portion 73 provided behind the front projecting portion 72 on the opposite side of the portion 71, a fitting portion 74 formed at the front end portion and fitted into the rear end opening of the ink containing tube 62, and the fitting portion 74. And a collar portion 75 formed on the rear side. The insertion portion 74 does not completely block the rear end opening of the ink storage tube 62 when inserted into the rear end opening of the ink storage tube 62, and can vent the inside and the outside of the ink storage tube 62. To. In addition, the rear end of the bullet 8 is locked to the front surface of the flange 75.

ペン先没入状態にある筆記体６の後端に連結された操作体７の前側突出部７２は、その操作体７の操作部７１を前方にスライド操作した際、先に突出状態にある他の筆記体６の後端に連結された操作体７の後側突出部７３と当接され、他の筆記体６のペン先突出状態が解除される。   The front projecting portion 72 of the operating body 7 connected to the rear end of the writing body 6 in the pen tip immersing state is the other projecting state when the operating portion 71 of the operating body 7 is slid forward. The pendant projecting state of the other cursive body 6 is released by contacting the rear projecting portion 73 of the operating body 7 connected to the rear end of the cursive body 6.

前記各々の操作体７は、連結される筆記体６の内部（即ちインキ収容管６２内部）に収容されたインキの色と略同じ色に着色される。具体的には、前記操作体７の各々は、連結される筆記体６のインキ色と略同じ色に着色された合成樹脂の成形体からなる。それにより、前記操作体７は、インキ色表示からなる識別表示を有する。例えば、インキ色が黒色の筆記体６に連結する操作体７は黒色に着色され、インキ色が青色の筆記体６に連結する操作体７は青色に着色され、インキ色が赤色の筆記体６に連結する操作体７は赤色に着色され、インキ色が緑色の筆記体６に連結する操作体７は緑色に着色される。本実施の形態では、インキ色の互いに異なる２本の筆記体６を軸筒２内に収容している。   Each of the operation bodies 7 is colored in substantially the same color as the color of the ink stored in the connected writing body 6 (that is, in the ink storage tube 62). Specifically, each of the operation bodies 7 is formed of a synthetic resin molded body colored in substantially the same color as the ink color of the connected writing body 6. Thereby, the said operation body 7 has the identification display which consists of an ink color display. For example, the operating body 7 connected to the black writing body 6 with the ink color is colored black, the operating body 7 connected to the writing body 6 with the blue ink color is colored blue, and the writing body 6 with the red ink color. The operating body 7 connected to is colored red, and the operating body 7 connected to the writing body 6 whose ink color is green is colored green. In the present embodiment, two writing bodies 6 having different ink colors are accommodated in the shaft cylinder 2.

特に、インキ収容管６２が不透明材料からなる構成の場合またはインキ収容管６２が透明材料からなるとともに内部のインキが染料インキである構成の場合、内部のインキを外部より視認することが困難であるが、操作体７をインキの色と略同じ色に着色したことが有効に作用し、軸筒２外部に存在する交換前の筆記体６において、内部のインキ色を外部より容易に識別できる。 In particular, when the ink storage tube 62 is made of an opaque material, or when the ink storage tube 62 is made of a transparent material and the internal ink is dye ink, it is difficult to visually recognize the internal ink from the outside. However, it is effective that the operation body 7 is colored in substantially the same color as the color of the ink, and the ink color inside the writing body 6 before the replacement that exists outside the shaft cylinder 2 can be easily identified from the outside.

（弾発体支持部）
軸筒２の内壁（即ち後軸４の内壁）には、円筒状の弾発体支持部９が設けられる。前記弾発体支持部９は、筆記体６が挿通される複数（具体的には２個）の内孔９１が軸方向に貫設されている。前記弾発体支持部９の後面と、各々の操作体７の鍔部７５の前面との間には、弾発体８が配置される。前記各々の弾発体８の内部に筆記体６（即ちインキ収容管６２）の後部が遊挿されるとともに、各々の弾発体８の前端は弾発体支持部９の後面により係止され、各々の弾発体８の後端は操作体７の鍔部７５の前面に係止される。 (Projection support part)
A cylindrical projectile support part 9 is provided on the inner wall of the shaft cylinder 2 (that is, the inner wall of the rear shaft 4). The projectile support 9 has a plurality of (specifically, two) inner holes 91 through which the writing body 6 is inserted, extending in the axial direction. A projectile 8 is disposed between the rear surface of the projectile support 9 and the front surface of the collar 75 of each operation body 7. The rear part of the writing body 6 (that is, the ink containing tube 62) is loosely inserted into each of the bullet bodies 8, and the front end of each bullet body 8 is locked by the rear surface of the bullet body support part 9, The rear end of each bullet member 8 is locked to the front surface of the collar portion 75 of the operation body 7.

また、弾発体支持部９の後面の各々の内孔９１の周囲には、周状壁部（具体的には後方に突出する筒状突出部）よりなる保持部９２が形成される。前記各々の保持部９２の内面は、各々の弾発体８の前端部外面が圧入保持される。それにより、各々の筆記体６及び操作体７を交換する際、軸筒２内から開口部４２を通して各々の弾発体８が脱落することを防止できる。   Further, around each inner hole 91 on the rear surface of the projectile support portion 9, a holding portion 92 made of a circumferential wall portion (specifically, a cylindrical protruding portion protruding rearward) is formed. The inner surface of each holding portion 92 is press-fitted and held at the outer surface of the front end portion of each bullet member 8. Thereby, when each writing body 6 and the operation body 7 are exchanged, it is possible to prevent each of the projectile bodies 8 from dropping out of the shaft tube 2 through the opening 42.

（弾発体）
前記各々の弾発体８は、各々の操作体７（即ち各々の筆記体６）を、常時、後方に付勢している。前記各々の弾発体８は、ペン先突出状態及びペン先没入状態のいずれにおいても圧縮状態（即ち筆記体６が後方に付勢された状態）にあり、それにより、各々の操作体７の前後のがたつきが防止される。 (Bullet)
Each of the projectile bodies 8 always urges each operation body 7 (that is, each writing body 6) backward. Each of the elastic bodies 8 is in a compressed state (that is, a state in which the writing body 6 is urged rearward) in both the pen tip protruding state and the pen tip immersing state. Shaking back and forth is prevented.

前記筆記体６のペン先６１が没入状態のとき、その筆記体６に取り付けられた操作体７の後端部は、蓋部５の前面に形成された当接壁部５１に衝止される。本実施の形態では、ペン先没入状態の筆記体６を後方に付勢する弾発体８の弾発力は、７グラム〜１０グラムの範囲に設定される。   When the pen point 61 of the writing body 6 is in an immersive state, the rear end portion of the operating body 7 attached to the writing body 6 is hit by a contact wall portion 51 formed on the front surface of the lid portion 5. . In the present embodiment, the resilience of the projectile 8 that urges the pen-immersed cursive 6 backward is set in the range of 7 to 10 grams.

一方、前記筆記体６のペン先６１が突出状態のとき、その筆記体６に取り付けられた操作体７の後端部は、軸筒２の内壁に形成された係止壁部４３に係止される。本実施の形態では、ペン先突出状態の筆記体６を後方に付勢する弾発体８の弾発力は、５０グラム〜６０グラムの範囲に設定される。 On the other hand, when the pen point 61 of the writing body 6 is in a protruding state, the rear end portion of the operating body 7 attached to the writing body 6 is locked to a locking wall portion 43 formed on the inner wall of the shaft cylinder 2. Is done. In the present embodiment, the resilience of the projectile 8 that biases the writing body 6 in the pen tip protruding state backward is set in a range of 50 grams to 60 grams.

尚、本実施の形態において、前記弾発体８の弾発力の測定は、軸筒２の窓孔４１から突出する操作体７の操作部７１にプッシュプルゲージを押し当てて測定した。前記測定において、ペン先突出状態の筆記体６を後方に付勢する弾発体８の弾発力は、操作体７と係止壁部４３との係止状態から、その係止状態が解除される瞬間の値を測定した。また、前記測定において、ペン先没入状態の筆記体６を後方に付勢する弾発体８の弾発力は、操作体７と当接壁部５１との当接状態から、その当接状態が解除される瞬間の値を測定した。 In the present embodiment, the elastic force of the elastic body 8 is measured by pressing a push-pull gauge against the operation portion 71 of the operation body 7 protruding from the window hole 41 of the shaft tube 2. In the measurement, the elastic force of the elastic body 8 that urges the writing body 6 in the protruding state of the pen tip backward is released from the locked state of the operating body 7 and the locking wall portion 43. Measured instantaneous value. In the measurement, the elastic force of the elastic body 8 that urges the pen-immersed writing body 6 backward is changed from the contact state between the operating body 7 and the contact wall portion 51 to the contact state. The value at the moment when is released is measured.

（ペン先の出没）
本実施の形態におけるペン先６１の出没作動について説明する。
一つの操作体７の操作部７１を弾発体８の後方付勢に抗して窓孔４１に沿って前方にスライド操作すると、そのスライド操作された操作体７の前側突出部７２が、先に突出状態にある他の筆記体６の操作体７の後側突出部７３を径方向外方に持ち上げる。それにより、軸筒２内壁の係止壁部４３と操作体７との係止状態が解除され、他の筆記体６が弾発体８の後方付勢により後方に移動され、他の筆記体６のペン先６１が軸筒２内に没入され、他の筆記体６の操作体７の後端が蓋部５の前面の当接壁部５１に当接衝止される。前記他の筆記体６のペン先６１の没入と同時に、前記前方にスライド操作した操作体７に連結された筆記体６のペン先６１が、軸筒２の前端孔３１より外部に突出されるとともに、前方にスライド操作された操作体７の後端が軸筒２内壁の係止壁部４３に係止され、そのペン先突出状態が維持される。 (Invitation of the nib)
A description will be given of the operation of the pen tip 61 in the present embodiment.
When the operating portion 71 of one operating body 7 is slid forward along the window hole 41 against the rear urging of the projectile 8, the front projecting portion 72 of the operating body 7 that has been slid is moved forward. The rear projecting portion 73 of the operating body 7 of the other writing body 6 in the projecting state is lifted outward in the radial direction. As a result, the locking state between the locking wall portion 43 of the inner wall of the shaft cylinder 2 and the operating body 7 is released, and the other writing body 6 is moved rearward by the rear urging of the projectile body 8, so that the other writing body. The pen tip 61 of 6 is immersed in the shaft cylinder 2, and the rear end of the operation body 7 of the other writing body 6 is brought into contact with and abutted against the contact wall portion 51 on the front surface of the lid portion 5. Simultaneously with the immersion of the pen tip 61 of the other writing body 6, the pen tip 61 of the writing body 6 connected to the operating body 7 slid forward is projected outside from the front end hole 31 of the shaft tube 2. At the same time, the rear end of the operating body 7 that has been slid forward is locked to the locking wall 43 of the inner wall of the shaft tube 2, and the pen tip protruding state is maintained.

（筆記体及び操作体の交換）
本実施の形態における筆記体６及び操作体７の交換について説明する。
筆記体６を交換する際、蓋部５が軸筒２の後端の開口部４２を閉鎖した状態（図１参照）から、蓋部５のヒンジ部５２と反対側の操作端部を後方に押圧し、係合部５３と被係合部４５との係合を解除し、蓋部５を後方に回動させ、軸筒２の後端の開口部４２を開口する。前記開口部４２を開口させると、前記開口部４２から各々の操作体７が、弾発体８の後方付勢により後方外部に突出される。前記軸筒２の後端の開口部４２が開口した状態（図３参照）で、操作体７を取り出すことにより、その操作体７と互いに連結状態にある筆記体６を、前記開口部４２を通して軸筒２内から取り出し、その後、互いに連結状態にある新たな筆記体６と新たな操作体７とを前記開口部４２を通して軸筒２内に挿入する。そして、蓋部５の当接壁部５１に各々の操作体７を当接させ、各々の操作体７を前方に押圧しながら蓋部５を前方に回動させ、その後、係合部５３と被係止部４５とを係合させ、開口部４２を閉鎖する。これにより、筆記体６及び操作体７の交換作業が終了する。 (Replace cursive and operating body)
The replacement of the writing body 6 and the operation body 7 in the present embodiment will be described.
When the cursive body 6 is replaced, the operation end on the side opposite to the hinge 52 of the lid 5 is moved backward from the state in which the lid 5 closes the opening 42 at the rear end of the barrel 2 (see FIG. 1). By pressing, the engagement between the engaging portion 53 and the engaged portion 45 is released, the lid portion 5 is rotated backward, and the opening 42 at the rear end of the shaft tube 2 is opened. When the opening 42 is opened, each operation body 7 is protruded from the opening 42 to the outside by the rear urging of the projectile 8. In the state where the opening 42 at the rear end of the shaft cylinder 2 is opened (see FIG. 3), the writing body 6 that is connected to the operation body 7 is taken out through the opening 42 by taking out the operation body 7. The new writing body 6 and the new operation body 7 which are taken out from the shaft cylinder 2 and are connected to each other are inserted into the shaft cylinder 2 through the opening 42. Then, each operating body 7 is brought into contact with the abutting wall portion 51 of the lid 5, and the lid 5 is rotated forward while pressing each operating body 7 forward. The locked portion 45 is engaged and the opening 42 is closed. Thereby, the exchange work of the writing body 6 and the operation body 7 is completed.

本発明の多芯筆記具の実施の形態の全ペン先没入状態（非筆記時）を示す縦断面図である。It is a longitudinal cross-sectional view which shows all the nib immersion states (at the time of non-writing) of embodiment of the multi-core writing instrument of this invention. 図１の多芯筆記具の一つのペン先が突出した状態（筆記時）を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state (at the time of writing) which one nib of the multi-core writing instrument of FIG. 1 protruded. 図１の多芯筆記具の後端の開口部を開口した状態を示す側面図である。It is a side view which shows the state which opened the opening part of the rear end of the multi-core writing instrument of FIG.

１ 多芯筆記具
２ 軸筒
３ 前軸
３１ 前端孔
４ 後軸
４１ 窓孔
４２ 開口部
４３ 係止壁部
４４ クリップ
４５ 被係合部
５ 蓋部
５１ 当接壁部
５２ ヒンジ部
５３ 係合部
６ 筆記体
６１ ペン先（ボールペンチップ）
６２ インキ収容管
７ 操作体
７１ 操作部
７２ 前側突出部
７３ 後側突出部
７４ 嵌入部
７５ 鍔部
８ 弾発体
９ 弾発体支持部
９１ 内孔
９２ 保持部
DESCRIPTION OF SYMBOLS 1 Multi-core writing instrument 2 Shaft cylinder 3 Front shaft 31 Front end hole 4 Rear shaft 41 Window hole 42 Opening part 43 Locking wall part 44 Clip 45 Engagement part 5 Lid part 51 Contact wall part 52 Hinge part 53 Engagement part 6 Cursive body 61 nib (ballpoint pen tip)
62 Ink receiving tube 7 Operating body 71 Operating section 72 Front projecting section 73 Rear projecting section 74 Fitting section 75 Hook 8 Ejection body 9 Elastomer support section 91 Inner hole 92 Holding section

Claims (2)

軸筒内に複数の筆記体を前後方向に移動可能に収容し、前記各々の筆記体を弾発体により後方に付勢し、前記各々の筆記体の後端に操作体を連結し、軸筒の側壁に前後方向に延びる複数の窓孔を径方向に貫設し、前記各々の窓孔から径方向外方に前記各々の操作体を突出させ、一つの操作体を窓孔に沿って前方にスライドさせることにより、その一つの操作体に連結された筆記体のペン先を軸筒の前端孔から突出させるとともに、先に突出状態にあった他の筆記体のペン先を軸筒内に没入させる多芯筆記具であって、ペン先突出状態の筆記体を後方に付勢する弾発体の弾発力を、３０グラム〜８０グラムに設定し、各々の筆記体を軸筒内から取り外し交換可能に構成するとともに、軸筒の後端に、窓孔を後方に開口させる開口部を設け、前記開口部を通して操作体を、軸筒内から取り外し可能且つ軸筒内に挿入可能に構成し、前記開口部を閉鎖する蓋部を軸筒の後端部に設け、前記蓋部に、ペン先没入状態の筆記体の操作体が当接する当接壁部を設けたことを特徴とする多芯筆記具。 A plurality of writing bodies are accommodated in the shaft cylinder so as to be movable in the front-rear direction, each of the writing bodies is urged rearward by a projectile, and an operating body is connected to a rear end of each of the writing bodies, A plurality of window holes extending in the front-rear direction are provided in the side wall of the cylinder in the radial direction, the respective operation bodies are protruded radially outward from the respective window holes, and one operation body is disposed along the window hole. By sliding forward, the pen tip of the cursive body connected to the one operating body is projected from the front end hole of the shaft cylinder, and the pen tip of the other cursive body that has been in the projecting state first is inserted into the shaft cylinder. A multi-core writing instrument that is immersed in the pen, and the elastic force of the projectile that urges the writing body in a state where the pen tip protrudes backward is set to 30 to 80 grams, and each writing body is placed from within the shaft cylinder. It is configured to be removable and replaceable, and at the rear end of the shaft tube, an opening for opening a window hole rearward is provided, The operation body is configured to be removable from the shaft tube and insertable into the shaft tube through the mouth, and a lid for closing the opening is provided at the rear end of the shaft tube, and the pen tip is inserted into the lid. A multi-core writing instrument comprising a contact wall portion on which an operating body of a writing body in a state contacts . ペン先没入状態の筆記体を後方に付勢する弾発体の弾発力を、１グラム〜２５グラムに設定したことを特徴とする請求項１記載の多芯筆記具。 2. The multi-core writing instrument according to claim 1, wherein the resilience of the projectile that urges the pen-immersed cursive body backward is set to 1 to 25 grams.
JP2005213898A 2005-07-25 2005-07-25 Multi-core writing instrument Active JP4754289B2 (en)

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JP2007030239A JP2007030239A (en) 2007-02-08
JP4754289B2 true JP4754289B2 (en) 2011-08-24

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5254641B2 (en) * 2007-03-05 2013-08-07 パイロットインキ株式会社 Thermochromic writing instrument
JP5279535B2 (en) * 2009-02-02 2013-09-04 株式会社パイロットコーポレーション Sliding composite writing instrument

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4097239B2 (en) * 1998-10-22 2008-06-11 株式会社壽 Side knock ballpoint pen
JP2005081821A (en) * 2003-09-11 2005-03-31 Pilot Ink Co Ltd Composite writing utensil
JP2005111905A (en) * 2003-10-10 2005-04-28 Pilot Ink Co Ltd Duplex writing utensil

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