JP2017094600A - Writing instrument - Google Patents

Writing instrument Download PDF

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JP2017094600A
JP2017094600A JP2015228981A JP2015228981A JP2017094600A JP 2017094600 A JP2017094600 A JP 2017094600A JP 2015228981 A JP2015228981 A JP 2015228981A JP 2015228981 A JP2015228981 A JP 2015228981A JP 2017094600 A JP2017094600 A JP 2017094600A
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knock member
knock
shaft cylinder
shaft
writing
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JP6694574B2 (en
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欣也 松下
Kinya Matsushita
欣也 松下
哲也 福井
Tetsuya Fukui
哲也 福井
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Kokuyo Co Ltd
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Kokuyo Co Ltd
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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

PROBLEM TO BE SOLVED: To effectively inhibit a knock member from being pressed without depending on user's intention to make the tip of a writing lead project out of the barrel.SOLUTION: A writing instrument is configured by comprising: writing leads that embody the function to perform writing; a barrel that stores wiring leads; a knock member, arranged on one end side of the barrel for movement to an advance position advancing deeper in the barrel by undergoing knocking operation by user's fingers for pressing toward the inside of the barrel to expose the tip of a writing lead out of the other end side of the barrel, and for reset to a projected position projected wider out of one end side of the barrel by undergoing knocking operation again to retract the tip of the writing lead; and an automatic lock mechanism, which causes the knock member to displace in a different direction from the axial direction for the knock member to advance and retreat between the projected position and the advance position, when the knock member resets by undergoing knocking operation again, without depending on operation force applied from user's fingers, thereby restricting the movement to the advance position of the knock member reset to the projected position.SELECTED DRAWING: Figure 4

Description

本発明は、いわゆるノック式の筆記具に関する。   The present invention relates to a so-called knock-type writing instrument.

この種の筆記具の代表例として、ノック式のボールペンが周知である（例えば、下記非特許文献を参照）。ノック式のボールペンでは、後端側に設けられているノック部材（ノック棒）を押下することで、インキを紙等の筆記対象に転写するためのボールを包有するペン先が軸筒の前端側から突出する。その後、再びノック部材を押下することで、軸筒から突出していたペン先が軸筒内に没入する。   As a representative example of this type of writing instrument, a knock-type ballpoint pen is well known (for example, refer to the following non-patent document). In a knock-type ballpoint pen, a pen tip having a ball for transferring ink to a writing object such as paper is pushed to the front end side of the shaft cylinder by pressing a knock member (knock bar) provided on the rear end side. Protrude from. After that, by depressing the knock member again, the pen tip protruding from the shaft tube is immersed in the shaft tube.

ノック式の筆記具をペンケースや鞄等に入れて運搬している最中に、他の物品等により意図せずノック部材が押圧されて、ペン先が軸筒から突出することがある。さすれば、ペン先から滲出するインクが、筆記具を収めているペンケースや鞄等の内側を汚染してしまう懸念を生じる。   While a knock type writing instrument is being carried in a pen case or a bag, the knock member may be unintentionally pressed by another article or the like, and the pen tip may protrude from the shaft tube. Then, there is a concern that the ink that oozes out from the pen tip contaminates the inside of the pen case, the tub, or the like that contains the writing instrument.

“ボールペン”，コクヨ総合カタログ２０１５年版ステーショナリー編，コクヨ株式会社，平成２６年１２月，ｐ．５３９−５４０“Ballpoint Pen”, KOKUYO General Catalog 2015 Stationery Edition, KOKUYO Co., Ltd., December 2014, p. 539-540

本発明は、使用者の意図によらずノック部材が押圧されて筆記芯の先端部が軸筒から突出することを効果的に抑止することを所期の目的としている。   An object of the present invention is to effectively inhibit the knock member from being pressed and the tip of the writing core projecting from the shaft tube without the intention of the user.

上述した課題を解決するべく、本発明では、筆記を行うための機能を具現する筆記芯と、筆記芯を収容する軸筒と、軸筒の一端側に配され、使用者の手指により軸筒内に向けて押圧されるノック操作を受けることで軸筒内により深く進入した進入位置に移動して筆記芯の先端部を軸筒の他端側から露出させるとともに、再度ノック操作を受けることで軸筒の一端側からより大きく突出する突出位置に復帰して筆記芯の先端部を軸筒内に没入させるノック部材と、ノック部材が再度のノック操作を受けて突出位置に復帰する際、使用者の手指から加えられる操作力によらずに、ノック部材が突出位置と進入位置との間で進退する軸心方向とは異なる方向に変位することを惹起し、以て突出位置に復帰したノック部材の進入位置に向かう移動を規制する自動ロック機構とを具備する筆記具を構成した。   In order to solve the above-described problems, in the present invention, a writing core that implements a function for performing writing, a shaft cylinder that accommodates the writing core, and a shaft cylinder that is disposed on one end side of the shaft cylinder and is operated by a user's fingers. By receiving a knocking operation that is pressed inward, it moves to the entry position that has entered deeper into the shaft cylinder, exposes the tip of the writing core from the other end side of the shaft cylinder, and receives the knocking operation again. A knock member that returns to the protruding position that protrudes more greatly from one end side of the shaft cylinder and immerses the tip of the writing core into the shaft cylinder, and is used when the knock member returns to the protruding position after receiving another knocking operation. Knock that causes the knock member to move in a direction different from the axial direction in which the knock member advances and retracts between the protruding position and the approach position regardless of the operating force applied from the finger of the person, and thus returns to the protruding position. The movement toward the entry position of the member is regulated. To constitute a writing instrument comprising an automatic locking mechanism to be.

前記自動ロック機構としては、例えば、前記ノック部材が前記突出位置に向けて移動する過程でノック部材を前記軸筒に対して相対的に軸心回りに回動させるカム機構を設ける。この場合、カム機構により軸心回りに回動したノック部材が突出位置において軸筒の所定部位に係合し、当該ノック部材の進入位置に向けた移動が規制される。   As the automatic locking mechanism, for example, a cam mechanism is provided for rotating the knock member relative to the shaft cylinder around the axis in the process of moving the knock member toward the protruding position. In this case, the knock member rotated around the axis by the cam mechanism engages with a predetermined portion of the shaft cylinder at the protruding position, and movement of the knock member toward the entry position is restricted.

より具体的には、前記軸筒の一端側の端部から他端側に向かって延びる、軸心方向に沿って進退するノック部材の所定部位を通過させるための切欠を軸筒に形成しておき、ノック部材が突出位置に復帰するときに、前記ノック部材の所定部位の位置が軸筒の切欠からずれるものとすることが考えられる。   More specifically, the shaft tube is formed with a notch for passing through a predetermined portion of the knock member that extends from the end portion on one end side of the shaft tube toward the other end side and advances and retreats along the axial direction. When the knock member returns to the protruding position, it is conceivable that the position of the predetermined portion of the knock member deviates from the notch of the shaft tube.

前記軸筒の外周面との間で他の物を挟むことのできるクリップを、前記ノック部材の外周面から外側に張り出す連接部を介してノック部材に一体的に設けている場合には、その連接部を前記ノック部材の所定部位とすることができ、ノック部材が突出位置に復帰するときに当該連接部の位置が軸筒の切欠からずれる。   When a clip capable of sandwiching another object between the outer peripheral surface of the shaft cylinder and the knock member is integrally provided via a connecting portion projecting outward from the outer peripheral surface of the knock member, The connecting portion can be a predetermined portion of the knock member, and when the knock member returns to the protruding position, the position of the connecting portion deviates from the notch of the shaft tube.

あるいは、前記自動ロック機構として、前記軸筒において前記ノック部材を受け容れる筒孔の内周面よりも外側に位置するロック姿勢と当該筒孔の内周面よりも内側に位置するアンロック姿勢とをとり得るストッパを前記ノック部材に設ける。この場合、ノック部材が前記突出位置に向けて移動する過程でストッパがアンロック姿勢からロック姿勢に遷移して軸筒の所定部位に係合し、突出位置に復帰したノック部材の進入位置に向けた移動が規制される。   Alternatively, as the automatic locking mechanism, a locking posture positioned outside the inner peripheral surface of the cylindrical hole that accepts the knock member in the shaft tube, and an unlocking posture positioned inside the inner peripheral surface of the cylindrical hole, The knock member is provided with a stopper capable of taking In this case, in the process in which the knock member moves toward the protruding position, the stopper changes from the unlocked position to the locked position, engages with a predetermined portion of the shaft tube, and moves toward the knock member entering position that has returned to the protruding position. Movement is restricted.

前記ストッパを、軸心方向に対して交差する軸回りに回動可能であるようにノック部材の基体に支持させており、ノック部材が進入位置に向かうときに予め使用者の手指により前記アンロック姿勢とされたストッパが基体とともに前記軸筒内に進入し、ノック部材が突出位置に復帰するときに軸筒内から脱出したストッパが回動して前記ロック姿勢をとるものとしても構わない。   The stopper is supported on the base of the knock member so as to be rotatable about an axis that intersects the axial direction, and the unlocking is performed in advance by a user's finger when the knock member moves toward the entry position. The stopper in the posture may enter the shaft cylinder together with the base body, and the stopper that escapes from the shaft cylinder when the knock member returns to the protruding position may be rotated to take the locking posture.

本発明によれば、使用者の意図によらずノック部材が押圧されて筆記芯の先端部が軸筒から突出することを効果的に抑止できる。   ADVANTAGE OF THE INVENTION According to this invention, it can suppress effectively that a knock member is pressed regardless of a user's intention, and the front-end | tip part of a writing core protrudes from a shaft cylinder.

本発明の第一実施形態の筆記具の斜視図。The perspective view of the writing instrument of 1st embodiment of this invention. 同実施形態の筆記具の斜視図。The perspective view of the writing instrument of the embodiment. 同実施形態の筆記具を分解した状態を示す斜視図。The perspective view which shows the state which decomposed | disassembled the writing instrument of the embodiment. 同実施形態の筆記具の後軸及びノック部材を拡大して示す、後軸の後端部を破断した斜視図。The perspective view which fractured | ruptured the rear-end part of the rear axis | shaft which expands and shows the rear axis | shaft and knock member of the writing instrument of the embodiment. 同実施形態の筆記具の後軸及びノック部材を拡大して示す側断面図。The sectional side view which expands and shows the rear axis | shaft and knock member of the writing instrument of the embodiment. 同実施形態の筆記具の後軸及びノック部材を拡大して示す平断面図。The cross-sectional view which expands and shows the rear axis | shaft and knock member of the writing instrument of the embodiment. 同実施形態の筆記具の後軸及びノック部材を拡大して示す側断面図。The sectional side view which expands and shows the rear axis | shaft and knock member of the writing instrument of the embodiment. 同実施形態の筆記具の後軸及びノック部材を拡大して示す平断面図。The cross-sectional view which expands and shows the rear axis | shaft and knock member of the writing instrument of the embodiment. 本発明の第二実施形態の筆記具の後軸及びノック部材を拡大して示す側断面図。The sectional side view which expands and shows the rear axis | shaft and knock member of the writing instrument of 2nd embodiment of this invention. 同実施形態の筆記具の後軸及びノック部材を拡大して示す側断面図。The sectional side view which expands and shows the rear axis | shaft and knock member of the writing instrument of the embodiment.

＜第一実施形態＞本発明の一実施形態を、図面を参照して説明する。図１ないし図８に、本発明の適用対象の一である後端ノック式の筆記具を示している。この筆記具は、筆記を行うための機能を具現する筆記芯１と、筆記芯１を収容する軸筒２と、軸筒２の一端側即ち後端（上端）側に配しているノック部材３がノック操作されることで軸筒２の他端側即ち前端（下端）側から筆記芯１の先端部を突没させるノック機構と、使用者の意図によらずノック部材３が押圧されて筆記芯１の先端部が軸筒２の他端側から突出することを抑止するための自動ロック機構とを具備する。   <First Embodiment> An embodiment of the present invention will be described with reference to the drawings. FIG. 1 to FIG. 8 show a trailing end knock type writing instrument which is one of the objects to which the present invention is applied. This writing instrument includes a writing core 1 that implements a function for performing writing, a shaft cylinder 2 that houses the writing core 1, and a knock member 3 that is disposed on one end side, that is, the rear end (upper end) side of the shaft cylinder 2. Is knocked so that the tip of the writing core 1 protrudes and retracts from the other end side, that is, the front end (lower end) side of the barrel 2, and the knock member 3 is pressed regardless of the intention of the user. And an automatic locking mechanism for preventing the tip portion of the core 1 from protruding from the other end side of the shaft tube 2.

本実施形態の筆記具は、ノック式のボールペンである。筆記芯１は、インキを充填した容器の先端部位にインキを紙等に転写するためのボールを包有する筆記機構部を取り付けたリフィルである。筆記具がボールペン以外の種類のものである場合も、筆記芯１の先端部には、インキ類を紙等に転写するための筆記機構部が設けられる。   The writing instrument of this embodiment is a knock-type ballpoint pen. The writing core 1 is a refill in which a writing mechanism unit including a ball for transferring ink to paper or the like is attached to a tip portion of a container filled with ink. Even when the writing instrument is of a type other than a ballpoint pen, a writing mechanism unit for transferring inks to paper or the like is provided at the tip of the writing core 1.

軸筒２は、筆記芯１及びノック機構を収容し、使用者に把持されるケーシングであり、軸心方向に沿って伸長した筒状の概形をなす。本実施形態における軸筒２は、後軸２１及び前軸２２に二分割される。図示例では、後軸２１に雌ねじ部を形成し、前軸２２に雄ねじ部を形成しており、それら雄ねじ部と雌ねじ部との螺合を通じて、後軸２１と前軸２２とを結合し軸筒２を構成するようにしている。   The shaft cylinder 2 is a casing that accommodates the writing core 1 and the knock mechanism and is gripped by the user, and has a cylindrical shape that extends along the axial direction. The shaft cylinder 2 in the present embodiment is divided into a rear shaft 21 and a front shaft 22. In the illustrated example, a female screw portion is formed on the rear shaft 21 and a male screw portion is formed on the front shaft 22, and the rear shaft 21 and the front shaft 22 are coupled to each other through screw engagement between the male screw portion and the female screw portion. The cylinder 2 is configured.

ノック機構は、使用者の手指により軸筒２内に向けて押圧されるノック操作を受けるノック部材（ノック棒）３と、ノック部材３に対して加えられた押圧力の伝達を受けて軸筒２内で軸心回りに回動しながら前後動（上下動）する回転子４と、軸筒２の内周に設けられ軸心回りに回動する回転子４と係合して回転子４の軸心方向に沿った位置を保定する中駒（カム筒）２１１と、ノック部材３、回転子４及び筆記芯１を筆記具の後端側に向けて弾性付勢する弾性付勢部材であるコイルばね５とを要素として成立する、従来より周知のカーン式ノック機構である。   The knock mechanism includes a knock member (knock bar) 3 that receives a knock operation that is pressed toward the shaft cylinder 2 by a user's finger, and a shaft cylinder that receives transmission of a pressing force applied to the knock member 3. The rotor 4 engages with the rotor 4 that moves back and forth (up and down) while rotating around the axis within the shaft 2, and the rotor 4 that rotates around the axis around the inner periphery of the shaft cylinder 2. This is an elastic urging member that elastically urges the middle piece (cam cylinder) 211, the knock member 3, the rotor 4 and the writing core 1 toward the rear end side of the writing instrument. This is a conventionally known Kern-type knock mechanism that is formed using the coil spring 5 as an element.

図１に示すように、ノック部材３が軸筒２の後端側からより大きく突出する突出位置にあるときに、使用者がノック部材３を押下するノック操作を行うと、ノック部材３及びこれと係合する回転子４が筆記具の前端側に向かって移動し、筆記芯１を前進させてその先端部を軸筒２の前端側から突出させる。しかる後、使用者がノック部材３に対して加えている押下操作力を緩めると、コイルばね５により弾性付勢されているノック部材３、回転子４及び筆記芯１が筆記具の後端側に向かってやや後退するが、回転子４と係合する中駒２１１が回転子４のそれ以上の後退を抑止し、その結果として、筆記芯１の先端部が軸筒２の前端側から突出した状態を維持するように回転子４及び筆記芯１が保定される。   As shown in FIG. 1, when the knock member 3 is in a projecting position where the knock member 3 projects more greatly from the rear end side of the shaft cylinder 2, if the user performs a knock operation to depress the knock member 3, the knock member 3 and the knock member 3 Is moved toward the front end side of the writing instrument, and the writing core 1 is advanced to project the tip portion from the front end side of the shaft tube 2. Thereafter, when the pressing operation force applied to the knock member 3 by the user is loosened, the knock member 3, the rotor 4 and the writing core 1 that are elastically biased by the coil spring 5 are moved to the rear end side of the writing instrument. The middle piece 211 that engages with the rotor 4 restrains further retreat of the rotor 4, and as a result, the tip of the writing core 1 protrudes from the front end side of the shaft cylinder 2. The rotor 4 and the writing core 1 are held so as to maintain the state.

図２に示すように、筆記芯１の先端部が軸筒２から突出し、ノック部材３が軸筒２内により深く進入した進入位置にあるときに、使用者が再度ノック部材３を押下するノック操作を行うと、ノック部材３、回転子４及び筆記芯１が筆記具の前端側に向かってやや前進する。しかる後、使用者がノック部材３に対して加えている押下操作力を緩めると、コイルばね５により弾性付勢されているノック部材３、回転子４及び筆記芯１が筆記具の後端側に向かって移動する。その過程で、中駒２１１による回転子４及び筆記芯１の保定が解除されて、図１に示しているように、ノック部材３が突出位置に復帰するとともに、筆記芯１の先端部が軸筒２内に没入する。   As shown in FIG. 2, when the tip of the writing core 1 protrudes from the shaft cylinder 2 and the knock member 3 is in the entry position where it has entered deeper into the shaft cylinder 2, the user knocks the knock member 3 again. When the operation is performed, the knock member 3, the rotor 4, and the writing core 1 are slightly advanced toward the front end side of the writing instrument. Thereafter, when the pressing operation force applied to the knock member 3 by the user is loosened, the knock member 3, the rotor 4 and the writing core 1 that are elastically biased by the coil spring 5 are moved to the rear end side of the writing instrument. Move towards. In the process, the retaining of the rotor 4 and the writing core 1 by the middle piece 211 is released, and as shown in FIG. 1, the knock member 3 is returned to the protruding position, and the tip of the writing core 1 is pivoted. Immerse in the tube 2.

しかして、本実施形態の筆記具の自動ロック機構は、ノック部材３が再度のノック操作を受けて突出位置に復帰する際に、使用者の手指から加えられる操作力によらずに、ノック部材３が突出位置と進入位置との間で進退する軸心方向とは異なる方向に変位することを惹起する。   Thus, the automatic locking mechanism of the writing instrument according to the present embodiment does not depend on the operation force applied from the user's finger when the knock member 3 receives the knock operation again and returns to the protruding position. Is caused to be displaced in a direction different from the axial direction in which it advances and retreats between the protruding position and the approach position.

詳述すると、図３、図４、図６及び図８に示すように、本実施形態におけるノック部材３は、使用者の手指により直接押下操作される操作部３１と、軸筒２内で操作部３１とともに軸心方向に沿って進退動作しながら回転子４と係合して回転子４の軸心方向に沿った進退及び軸心回りの回転を惹起する駆動部３２とを要素とする。操作部３１と駆動部３２とは別体をなしており、操作部３１は駆動部３２及び軸筒２に対して相対的に軸心回りに回動することが可能である。一方で、駆動部３２は、既製のボールペンのカーン式ノック機構におけるノック棒と同様、軸筒２内で軸心周りに回動しない。   More specifically, as shown in FIGS. 3, 4, 6, and 8, the knock member 3 according to the present embodiment is operated in the operation unit 31 that is directly pressed by a user's finger and the shaft cylinder 2. The drive part 32 which engages with the rotor 4 while moving forward and backward along the axial direction together with the part 31 and causes the rotor 4 to move forward and backward along the axial direction and to rotate around the axial center is used as an element. The operation unit 31 and the drive unit 32 are separate from each other, and the operation unit 31 can rotate around the axis relative to the drive unit 32 and the shaft tube 2. On the other hand, the drive part 32 does not rotate around the shaft center in the shaft cylinder 2 like a knock bar in a Kern knock mechanism of a ready-made ballpoint pen.

ノック部材３の操作部３１における、軸筒２内に挿入される部位の外周面には、軸心方向に対して垂直な径方向に沿って外側方に突出したカム部３１１を形成している。このカム部３１１の後向面（上向面）は、軸心方向及び軸心回りの回転方向の各々に対して傾斜している。   A cam portion 311 that protrudes outward along a radial direction perpendicular to the axial direction is formed on an outer peripheral surface of a portion of the operation portion 31 of the knock member 3 that is inserted into the shaft tube 2. . The rear surface (upward surface) of the cam portion 311 is inclined with respect to the axial direction and the rotational direction around the axial center.

他方、ノック部材３が挿入される軸筒２の後端部の内周には、それ以外の部位と比較して内径が狭まった縮径部２１２を設けており、その縮径部２１２の前端縁（下端縁）を一部切り欠くことでカム部２１３を形成している。このカム部２１３の前向面（下向面）もまた、軸心方向及び軸心回りの回転方向の各々に対して傾斜している。軸筒２の縮径部２１２（の内周面）の内径は、ノック部材３のカム部３１１（の外周面）の外径と略等しい。ノック部材３及び軸筒２の各々のカム部３１１、２１３は、本実施形態の筆記具の自動ロック機構を構成する。   On the other hand, on the inner periphery of the rear end portion of the shaft cylinder 2 into which the knock member 3 is inserted, a reduced diameter portion 212 having a smaller inner diameter than that of the other portions is provided, and the front end of the reduced diameter portion 212 is provided. The cam portion 213 is formed by partially cutting the edge (lower edge). The forward surface (downward surface) of the cam portion 213 is also inclined with respect to each of the axial direction and the rotational direction around the axial center. The inner diameter of the reduced diameter portion 212 (the inner peripheral surface thereof) of the shaft cylinder 2 is substantially equal to the outer diameter of the cam portion 311 (the outer peripheral surface thereof) of the knock member 3. The cam portions 311 and 213 of the knock member 3 and the shaft tube 2 constitute an automatic locking mechanism for the writing instrument of this embodiment.

また、図４ないし図８に示すように、ノック部材３における、軸筒２から突出する部位である操作部３１の外周面には、径方向に沿って外側方に張り出す連接部３１２を設けており、この連接部３１２を介して、軸筒２の外周面との間で他の物を挟む機能を提供するクリップ３３をノック部材３に一体的に接合している。   Further, as shown in FIGS. 4 to 8, a connecting portion 312 is provided on the outer peripheral surface of the operation portion 31 which is a portion protruding from the shaft cylinder 2 in the knock member 3 and projects outward in the radial direction. A clip 33 that provides a function of sandwiching other objects between the outer periphery of the shaft tube 2 is integrally joined to the knock member 3 via the connecting portion 312.

上記の連接部３１２は、軸筒２の周壁と干渉し得る。そこで、軸筒２の後端部から前端側に向かって延びる切欠２１４を、予め軸筒２に形成してある。図７に示しているように、この切欠２１４は、ノック操作を受けたときにノック部材３とともに移動する連接部３１２を通過させるためのものである。   The connecting portion 312 can interfere with the peripheral wall of the shaft tube 2. Therefore, a notch 214 extending from the rear end portion of the shaft tube 2 toward the front end side is formed in the shaft tube 2 in advance. As shown in FIG. 7, the notch 214 is for allowing the connecting portion 312 that moves together with the knock member 3 to pass through when the knock operation is received.

再度のノック操作を受けたノック部材３が突出位置に向けて移動する際には、図５に示すように、対向するカム部２１３の前向面とカム部３１１の後向面とが当接する。その後、コイルばね５により弾性付勢されたノック部材３がさらに後退（上動）することで、図６に示すようにカム部３１１の後向面がカム部２１３の前向面に対して摺動し、ノック部材３が軸筒２に対して軸心回りに一定の方向に回動する。結果、図８に示すように、ノック部材３が突出位置に到達する直前に、ノック部材３の連接部３１２の位置がその回動方向に沿って軸筒２の切欠２１４からずれる。そして、連接部３１２が、軸筒２の切欠２１４の後端に連なる係止部２１５に近接または係合する。係止部２１５は、ちょうど軸筒２の後端を軸心回りの回転方向即ち周方向に沿って一部切り欠いたような形状をなす。ノック部材３の連接部３１２と相対する係止部２１５の後向端面は、軸筒２の後端面よりも前方に偏倚している。   When the knock member 3 that has been subjected to the knock operation again moves toward the protruding position, as shown in FIG. 5, the front surface of the cam portion 213 and the rear surface of the cam portion 311 that are in contact with each other come into contact with each other. . Thereafter, the knock member 3 elastically biased by the coil spring 5 is further retracted (moved upward) so that the rear surface of the cam portion 311 slides with respect to the front surface of the cam portion 213 as shown in FIG. The knock member 3 rotates in a fixed direction around the axis with respect to the shaft cylinder 2. As a result, as shown in FIG. 8, immediately before the knock member 3 reaches the protruding position, the position of the connecting portion 312 of the knock member 3 is shifted from the notch 214 of the shaft tube 2 along the rotation direction. Then, the connecting portion 312 approaches or engages with the locking portion 215 that is continuous with the rear end of the notch 214 of the shaft tube 2. The locking portion 215 has a shape in which the rear end of the shaft cylinder 2 is partially cut out along the rotational direction around the axis, that is, in the circumferential direction. The rearward end surface of the locking portion 215 facing the connecting portion 312 of the knock member 3 is biased forward relative to the rear end surface of the shaft tube 2.

図８に示しているように、ノック部材３の連接部３１２が軸筒２の切欠２１４からずれている状態では、ノック部材３に軸心方向に沿った外力が作用したとしても、連接部３１２と係止部２１５との衝突により、ノック部材３が突出位置から進入位置に向かって移動することが阻まれる。故に、軸筒２内に没入している筆記芯１の先端部が軸筒２から突出することもない。本実施形態の筆記具を使用しようとする使用者は、ノック部材３をノック操作するのに先んじて、ノック部材３を軸心回りに回動させ、図７に示しているように連接部３１２を切欠２１４の直上の位置まで変位させる。   As shown in FIG. 8, in a state where the connecting portion 312 of the knock member 3 is displaced from the notch 214 of the shaft cylinder 2, even if an external force along the axial direction acts on the knock member 3, the connecting portion 312. And the locking portion 215 impede the knock member 3 from moving from the protruding position toward the entry position. Therefore, the tip of the writing core 1 that is immersed in the shaft tube 2 does not protrude from the shaft tube 2. Prior to knocking the knock member 3, the user who intends to use the writing instrument of the present embodiment rotates the knock member 3 about the axis, and connects the connecting portion 312 as shown in FIG. 7. Displace to a position directly above the notch 214.

本実施形態では、筆記を行うための機能を具現する筆記芯１と、筆記芯１を収容する軸筒２と、軸筒２の一端側に配され、使用者の手指により軸筒２内に向けて押圧されるノック操作を受けることで軸筒２内により深く進入した進入位置に移動して筆記芯１の先端部を軸筒２の他端側から露出させるとともに、再度ノック操作を受けることで軸筒２の一端側からより大きく突出する突出位置に復帰して筆記芯１の先端部を軸筒２内に没入させるノック部材３と、ノック部材３が再度のノック操作を受けて突出位置に復帰する際、使用者の手指から加えられる操作力によらずに、ノック部材３（操作部３１）が突出位置と進入位置との間で進退する軸心方向とは異なる方向に変位することを惹起し、以て突出位置に復帰したノック部材３の進入位置に向かう移動を規制する自動ロック機構とを具備する筆記具を構成した。   In the present embodiment, a writing core 1 that implements a function for performing writing, a shaft cylinder 2 that houses the writing core 1, and one end side of the shaft cylinder 2, which is placed in the shaft cylinder 2 by a user's fingers. By receiving a knocking operation that is pressed toward the shaft cylinder 2, it moves to the entry position that has entered deeper into the shaft cylinder 2 to expose the tip of the writing core 1 from the other end side of the shaft cylinder 2 and to receive the knocking operation again. The knock member 3 that returns to the projecting position that projects more greatly from the one end side of the shaft cylinder 2 and immerses the tip end portion of the writing core 1 into the shaft cylinder 2, and the knock member 3 receives the knock operation again and projects to the projecting position. When returning to the position, the knock member 3 (operation unit 31) is displaced in a direction different from the axial direction in which the knock member 3 (operation unit 31) advances and retreats between the protruding position and the entering position regardless of the operating force applied from the user's finger The knock member 3 that has returned to the protruding position due to To constitute a writing instrument comprising an automatic locking mechanism for restricting the movement towards the location.

本実施形態によれば、使用者の意図によらずノック部材３が押圧されて筆記芯１の先端部が軸筒２から突出することを効果的に抑止することができる。   According to this embodiment, it can suppress effectively that the knock member 3 is pressed regardless of a user's intention, and the front-end | tip part of the writing core 1 protrudes from the axial cylinder 2. FIG.

本実施形態における自動ロック機構は、前記ノック部材３が前記突出位置に向けて移動する過程でノック部材３を前記軸筒２に対して相対的に軸心回りに回動させるカム機構である。カム機構により軸心回りに回動したノック部材３は、突出位置において軸筒２の所定部位２１５に係合し、その結果として当該ノック部材３の進入位置に向けた移動が規制される。このような自動ロック機構は、ノック式の筆記具が必然的に有しているノック機構の要素である弾性付勢部材５を利用するものであり、自動ロック機構自体のために別途弾性付勢部材を筆記具に実装する必要がない。   The automatic locking mechanism in the present embodiment is a cam mechanism that rotates the knock member 3 about the axis relative to the shaft cylinder 2 in the process of moving the knock member 3 toward the protruding position. The knock member 3 rotated about the axis by the cam mechanism is engaged with the predetermined portion 215 of the shaft cylinder 2 at the protruding position, and as a result, the movement of the knock member 3 toward the entry position is restricted. Such an automatic locking mechanism uses an elastic biasing member 5 that is an element of the knocking mechanism that a knock type writing instrument inevitably has, and a separate elastic biasing member for the automatic locking mechanism itself. Is not required to be mounted on the writing instrument.

さらに、本実施形態では、前記軸筒２の外周面との間で他の物を挟むことのできるクリップ３３を、前記ノック部材３の外周面から外側に張り出す連接部３１２を介してノック部材３に一体的に設け、かつ、軸筒２の一端側の端部から他端側に向かって延びる、ノック部材３とともに進退する連接部３１２を通過させるための切欠２１４を軸筒２に形成しており、ノック部材３が突出位置に復帰するとき、前記カム機構により軸心回りに回動したノック部材３の連接部３１２の位置がその回動方向に沿って軸筒２の切欠２１４からずれるものとしているため、筆記具全体としての構造や各部材の形状が徒に複雑化しない。   Furthermore, in the present embodiment, the clip 33 that can hold another object between the outer peripheral surface of the shaft cylinder 2 is knocked via the connecting portion 312 that projects outward from the outer peripheral surface of the knock member 3. The shaft tube 2 is formed with a notch 214 that is provided integrally with the shaft member 3 and extends from the end portion on one end side of the shaft tube 2 toward the other end side so as to pass through the connecting portion 312 that advances and retreats together with the knock member 3. When the knock member 3 returns to the protruding position, the position of the connecting portion 312 of the knock member 3 rotated about the axis by the cam mechanism is shifted from the notch 214 of the shaft tube 2 along the rotation direction. Therefore, the structure of the writing instrument as a whole and the shape of each member are not complicated.

なお、ノック部材３が軸心方向に沿って進退するときに軸筒２の切欠２１４内で進退し、ノック部材３が進入位置から突出位置に復帰する際に切欠２１４から係止部２１５へと変位する部位が、必ずクリップ３３に連接する連接部３１２であるとは限らない。   The knock member 3 advances and retreats in the notch 214 of the shaft cylinder 2 when the knock member 3 advances and retreats along the axial direction, and when the knock member 3 returns from the entering position to the protruding position, the notch 214 moves to the locking portion 215. The portion to be displaced is not necessarily the connecting portion 312 that is connected to the clip 33.

また、ノック部材３が突出位置に向けて移動する過程でノック部材３の操作部３１を軸筒２に対して相対的に軸心回りに回動させるカム機構が、常に操作部３１と軸筒２との間に介在しているとも限らない。例えば、操作部３１と駆動部３２との間に、これら操作部３１及び駆動部３２が突出位置に向けて移動する過程で操作部３１を駆動部３２及び軸筒２に対して相対的に軸心回りに回動させるカム機構を設けることも当然に考えられる。   Further, a cam mechanism that rotates the operation portion 31 of the knock member 3 around the axis relative to the shaft tube 2 in the process of moving the knock member 3 toward the projecting position is always the operation portion 31 and the shaft tube. It is not necessarily between the two. For example, the operation unit 31 and the drive unit 32 are moved relative to the drive unit 32 and the shaft tube 2 in the process in which the operation unit 31 and the drive unit 32 move toward the protruding position. Of course, it is conceivable to provide a cam mechanism that rotates around the center.

あるいは、操作部３１と駆動部３２との間に、操作部３１が駆動部３２に対して相対的に軸心回りに回動するように操作部３１を弾性付勢する弾性付勢部材を介在させて設けておき、これにより操作部３１に連なる連接部３１２の切欠２１４側から係止部２１５側への変位を惹起するようにしても構わない。この場合、上述したカム機構は不要となる。   Alternatively, an elastic biasing member that elastically biases the operation unit 31 is interposed between the operation unit 31 and the drive unit 32 so that the operation unit 31 rotates about the axis relative to the drive unit 32. Thus, the displacement from the notch 214 side to the locking portion 215 side of the connecting portion 312 connected to the operation portion 31 may be caused thereby. In this case, the above-described cam mechanism is not necessary.

＜第二実施形態＞続いて説明する第二実施形態は、ノック部材３単体で自動ロック機構を構築したものであり、軸筒２にはカム部２１３を設ける等の特段の改変を施していない。以降、本実施形態特有の構成に関して述べる。筆記芯１やノック機構等については、上記第一実施形態（さらには、既存の筆記具）と同様に構成することができるため、ここでは説明を割愛する。   <Second Embodiment> In the second embodiment to be described subsequently, an automatic locking mechanism is constructed with the knock member 3 alone, and the shaft cylinder 2 is not specially modified such as providing a cam portion 213. . Hereinafter, a configuration unique to the present embodiment will be described. The writing core 1, the knock mechanism, and the like can be configured in the same manner as in the first embodiment (further, the existing writing instrument), and thus description thereof is omitted here.

図９及び図１０に示すように、本実施形態の筆記具のノック部材３は、ノック機構の回転子４と係合して筆記芯１の先端部の突没を惹起する（ノック部材３本来の機能を具現する）基体３４と、軸心方向に対して交差しまたは軸心方向に対して垂直な軸３４１回りに回動可能であるようにノック部材３の基体３４に支持させたストッパ３５とを備えている。   As shown in FIGS. 9 and 10, the knock member 3 of the writing instrument according to the present embodiment engages with the rotor 4 of the knock mechanism to cause the leading end of the writing core 1 to project and retract (originally of the knock member 3). And a stopper 35 supported on the base 34 of the knock member 3 so as to be rotatable about an axis 341 that intersects or is perpendicular to the axial direction. It has.

本実施形態のノック部材３のストッパ３５は、図９に示すアンロック姿勢と、図１０に示すロック姿勢とを選択的にとり得る。前者のアンロック姿勢をとるとき、ストッパ３５は、軸筒２においてノック部材３を受け容れる筒孔の内周面２１６よりも内側に位置する。この状態では、ストッパ３５が基体３４の後方（上方）に覆い被さる様相を呈する。翻って、後者のロック姿勢をとるときには、ストッパ３５が、軸筒２の筒孔の内周面２１６よりも外側に位置する。   The stopper 35 of the knock member 3 of the present embodiment can selectively take the unlocking posture shown in FIG. 9 and the locking posture shown in FIG. When taking the former unlocking posture, the stopper 35 is positioned on the inner side of the inner peripheral surface 216 of the tube hole that receives the knock member 3 in the shaft tube 2. In this state, the stopper 35 covers the rear side (upper side) of the base body 34. In turn, when the latter locking posture is taken, the stopper 35 is positioned outside the inner peripheral surface 216 of the tube hole of the shaft tube 2.

ストッパ３５は、当該ストッパ３５と基体３４との間に介在させた弾性付勢部材（図示せず）、例えばねじりコイルばねやトーションバーばね、樹脂ばね等により、予めアンロック姿勢からロック姿勢へと向かう方向に弾性付勢してある。   The stopper 35 is previously changed from the unlocked position to the locked position by an elastic biasing member (not shown) interposed between the stopper 35 and the base body 34, for example, a torsion coil spring, a torsion bar spring, a resin spring or the like. It is elastically biased in the direction of heading.

ノック部材３がノック操作を受けて進入位置にあり、筆記芯１の先端部が筒孔から突出しているときには、ストッパ３５の少なくとも一部分が軸筒２の筒孔内に挿入されており、必然的にストッパ３５は筒孔の内周面２１６と係合してアンロック姿勢をとる。その状態で、ノック部材３が再度のノック操作を受けると、ノック機構の作動によりノック部材３の基体３４が突出位置に向けて移動することとなるが、弾性付勢されているストッパ３５が軸筒２の筒孔から脱出した瞬間にストッパ３５が回動、傾倒してロック姿勢をとるようになる。   When the knock member 3 is in the entry position after receiving the knock operation and the tip of the writing core 1 protrudes from the cylindrical hole, at least a part of the stopper 35 is inserted into the cylindrical hole of the shaft cylinder 2 inevitably. Further, the stopper 35 is engaged with the inner peripheral surface 216 of the cylindrical hole to take an unlocked posture. In this state, when the knock member 3 is subjected to another knock operation, the base 34 of the knock member 3 moves toward the protruding position by the operation of the knock mechanism. The stopper 35 rotates and tilts at the moment when it escapes from the tube hole of the tube 2 and takes a locked posture.

図１０に示しているように、ストッパ３５がロック姿勢をとっている状態では、ノック部材３に軸心方向に沿った外力が作用したとしても、ストッパ３５と軸筒２の周壁との衝突により、ノック部材３が突出位置から進入位置に向かって移動することが阻まれる。故に、軸筒２内に没入している筆記芯１の先端部が軸筒２から突出することもない。本実施形態の筆記具を使用しようとする使用者は、ノック部材３をノック操作するのに先んじて、ストッパ３５を軸３４１回りに回動させて、図９に示すアンロック姿勢まで変位させる。   As shown in FIG. 10, in the state where the stopper 35 is in the locked posture, even if an external force along the axial direction acts on the knock member 3, the stopper 35 and the peripheral wall of the shaft cylinder 2 are collided. The knock member 3 is prevented from moving from the protruding position toward the entering position. Therefore, the tip of the writing core 1 that is immersed in the shaft tube 2 does not protrude from the shaft tube 2. Prior to knocking the knock member 3, the user who intends to use the writing instrument of the present embodiment rotates the stopper 35 about the shaft 341 to displace it to the unlocked posture shown in FIG.

本実施形態では、筆記を行うための機能を具現する筆記芯１と、筆記芯１を収容する軸筒２と、軸筒２の一端側に配され、使用者の手指により軸筒２内に向けて押圧されるノック操作を受けることで軸筒２内により深く進入した進入位置に移動して筆記芯１の先端部を軸筒２の他端側から露出させるとともに、再度ノック操作を受けることで軸筒２の一端側からより大きく突出する突出位置に復帰して筆記芯１の先端部を軸筒２内に没入させるノック部材３と、ノック部材３が再度のノック操作を受けて突出位置に復帰する際、使用者の手指から加えられる操作力によらずに、ノック部材３（ストッパ５３）が突出位置と進入位置との間で進退する軸心方向とは異なる方向に変位することを惹起し、以て突出位置に復帰したノック部材３の進入位置に向かう移動を規制する自動ロック機構とを具備する筆記具を構成した。   In the present embodiment, a writing core 1 that implements a function for performing writing, a shaft cylinder 2 that houses the writing core 1, and one end side of the shaft cylinder 2, which is placed in the shaft cylinder 2 by a user's fingers. By receiving a knocking operation that is pressed toward the shaft cylinder 2, it moves to the entry position that has entered deeper into the shaft cylinder 2 to expose the tip of the writing core 1 from the other end side of the shaft cylinder 2 and to receive the knocking operation again. The knock member 3 that returns to the projecting position that projects more greatly from the one end side of the shaft cylinder 2 and immerses the tip end portion of the writing core 1 into the shaft cylinder 2, and the knock member 3 receives the knock operation again and projects to the projecting position. When returning to, the knock member 3 (stopper 53) is displaced in a direction different from the axial direction in which the knock member 3 (stopper 53) advances and retracts between the protruding position and the entering position, regardless of the operating force applied from the user's finger. The knock member 3 that has been raised and thus returned to the protruding position The movement toward the position to constitute a writing instrument comprising an automatic locking mechanism for restricting.

本実施形態によれば、使用者の意図によらずノック部材３が押圧されて筆記芯１の先端部が軸筒２から突出することを効果的に抑止することができる。   According to this embodiment, it can suppress effectively that the knock member 3 is pressed regardless of a user's intention, and the front-end | tip part of the writing core 1 protrudes from the axial cylinder 2. FIG.

本実施形態における自動ロック機構は、前記軸筒２において前記ノック部材３を受け容れる筒孔の内周面２１６よりも外側に位置するロック姿勢と当該筒孔の内周面２１６よりも内側に位置するアンロック姿勢とをとり得るストッパ３５を、アンロック姿勢からロック姿勢へと遷移する方向に弾性付勢しながら前記ノック部材３に設けてなるものである。ノック部材３が前記突出位置に向けて移動する過程でアンロック姿勢からロック姿勢に遷移したストッパ３５は軸筒２の所定部位即ち後端部の周壁に係合し、その結果として突出位置に復帰したノック部材３の進入位置に向けた移動が規制される。このような自動ロック機構は、ノック部材３単体で成立するものであり、筆記具の他の部材、即ち軸筒２や回転子４、筆記芯１等に特段の改変を施すことなく実現することが可能である。   In the present embodiment, the automatic locking mechanism is positioned on the outer side of the inner peripheral surface 216 of the cylindrical hole that receives the knock member 3 in the shaft cylinder 2 and on the inner side of the inner peripheral surface 216 of the cylindrical hole. The knock member 3 is provided with a stopper 35 that can take the unlocking posture while being elastically biased in the direction of transition from the unlocking posture to the locking posture. The stopper 35 that has transitioned from the unlocked position to the locked position in the process in which the knock member 3 moves toward the protruding position engages with a predetermined portion of the shaft cylinder 2, that is, the peripheral wall of the rear end, and as a result, returns to the protruding position. The movement of the knock member 3 toward the entry position is restricted. Such an automatic locking mechanism is realized by the knock member 3 alone, and can be realized without any particular modification to other members of the writing instrument, that is, the shaft cylinder 2, the rotor 4, the writing core 1, and the like. Is possible.

さらに、本実施形態では、前記ストッパ３５を、軸心方向に対して交差する軸３４１回りに回動可能であるようにノック部材３の基体３４に支持させており、ノック部材３が進入位置に向かうときに予め使用者の手指により前記アンロック姿勢とされたストッパ３５が基体３４とともに前記軸筒２内に進入し、ノック部材３が突出位置に復帰するときに軸筒２内から脱出したストッパ３５が回動して前記ロック姿勢をとるものとしているため、筆記具全体としての構造や各部材の形状が徒に複雑化しない。   Further, in the present embodiment, the stopper 35 is supported by the base body 34 of the knock member 3 so as to be rotatable around an axis 341 that intersects the axial direction, and the knock member 3 is at the entry position. The stopper 35 which has been in the unlocked posture by the user's fingers in advance when entering, enters the shaft cylinder 2 together with the base body 34 and escapes from the shaft cylinder 2 when the knock member 3 returns to the protruding position. Since 35 rotates and assumes the said locking posture, the structure as a whole writing instrument and the shape of each member do not become complicated easily.

上記実施形態では、ノック部材３における基体３４とストッパ３５との間に弾性付勢部材を介在させて、ストッパ３５をアンロック姿勢からロック姿勢へと向かう方向に弾性付勢していた。しかしながら、そのような弾性付勢部材を用いず、ノック部材３が突出位置に向けて移動する過程でストッパ３５がその自重によってアンロック姿勢からロック姿勢に遷移するように構成する（そのようにストッパ３５の重心を設定する）ことも考えられる。   In the above embodiment, an elastic biasing member is interposed between the base body 34 and the stopper 35 in the knock member 3 to elastically bias the stopper 35 in the direction from the unlocking posture to the locking posture. However, such a resilient urging member is not used, and the stopper 35 is configured to transition from the unlocked position to the locked position by its own weight in the process in which the knock member 3 moves toward the protruding position (such as the stopper). Setting the center of gravity of 35).

なお、本発明は以上に詳述した実施形態に限られるものではない。例えば、筆記具の態様はボールペンには限定されない。換言すれば、筆記芯はボールペンのリフィルであるとは限らない。   The present invention is not limited to the embodiment described in detail above. For example, the mode of the writing instrument is not limited to a ballpoint pen. In other words, the writing core is not necessarily a ballpoint pen refill.

その他各部の具体的構成は、本発明の趣旨を逸脱しない範囲で種々変形が可能である。   Other specific configurations of each part can be variously modified without departing from the spirit of the present invention.

本発明は、雄ねじ部を有する部材と雌ねじ部を有する部材との結合の構造に適用できる。   The present invention can be applied to a structure of coupling between a member having a male screw portion and a member having a female screw portion.

１…筆記芯
２…軸筒
２１３…カム部
２１４…切欠
２１５…係止部
２１６…筒孔の内周面
３…ノック部材
３１１…カム部
３１２…連接部
３３…クリップ
３４…基体
３４１…軸
３５…ストッパ DESCRIPTION OF SYMBOLS 1 ... Writing core 2 ... Shaft cylinder 213 ... Cam part 214 ... Notch 215 ... Locking part 216 ... Inner peripheral surface of cylinder hole 3 ... Knock member 311 ... Cam part 312 ... Connection part 33 ... Clip 34 ... Base | substrate 341 ... Shaft 35 ... stopper

Claims (6)

筆記を行うための機能を具現する筆記芯と、
筆記芯を収容する軸筒と、
軸筒の一端側に配され、使用者の手指により軸筒内に向けて押圧されるノック操作を受けることで軸筒内により深く進入した進入位置に移動して筆記芯の先端部を軸筒の他端側から露出させるとともに、再度ノック操作を受けることで軸筒の一端側からより大きく突出する突出位置に復帰して筆記芯の先端部を軸筒内に没入させるノック部材と、
ノック部材が再度のノック操作を受けて突出位置に復帰する際、使用者の手指から加えられる操作力によらずに、ノック部材が突出位置と進入位置との間で進退する軸心方向とは異なる方向に変位することを惹起し、以て突出位置に復帰したノック部材の進入位置に向かう移動を規制する自動ロック機構と
を具備する筆記具。 A writing core that embodies the function for writing,
A barrel that houses the writing core;
It is arranged on one end side of the shaft tube, and receives the knocking operation that is pressed toward the inside of the shaft tube by the user's finger, so that it moves to the entry position that has entered deeper into the shaft tube and moves the tip of the writing core to the shaft tube. A knock member that is exposed from the other end of the shaft and returns to a protruding position that protrudes more greatly from one end side of the shaft cylinder by receiving a knock operation again, and immerses the tip of the writing core into the shaft cylinder,
The axial direction in which the knock member advances and retracts between the protruding position and the entry position regardless of the operating force applied from the user's finger when the knock member returns to the protruding position after receiving another knocking operation. A writing instrument comprising: an automatic lock mechanism that regulates movement of the knock member that has been displaced in a different direction and thus returned to the protruding position toward the entry position. 前記自動ロック機構として、前記ノック部材が前記突出位置に向けて移動する過程でノック部材を前記軸筒に対して相対的に軸心回りに回動させるカム機構を設けており、
カム機構により軸心回りに回動したノック部材が突出位置において軸筒の所定部位に係合し、当該ノック部材の進入位置に向けた移動が規制される請求項１記載の筆記具。 As the automatic locking mechanism, a cam mechanism is provided for rotating the knock member relative to the shaft cylinder around the axis in the process of moving the knock member toward the protruding position;
The writing instrument according to claim 1, wherein the knock member rotated about the axis by the cam mechanism engages with a predetermined portion of the shaft cylinder at the protruding position, and movement of the knock member toward the entry position is restricted. 前記軸筒の一端側の端部から他端側に向かって延びる、軸心方向に沿って進退するノック部材の所定部位を通過させるための切欠を軸筒に形成しており、
ノック部材が突出位置に復帰するとき、前記ノック部材の所定部位の位置が軸筒の切欠からずれる請求項１または２記載の筆記具。 The shaft tube is formed with a notch for passing through a predetermined portion of the knock member that extends from the end portion on one end side of the shaft tube toward the other end side and advances and retracts along the axial direction.
The writing instrument according to claim 1 or 2, wherein when the knock member returns to the protruding position, the position of the predetermined portion of the knock member deviates from the notch of the shaft cylinder. 前記軸筒の外周面との間で他の物を挟むことのできるクリップを、前記ノック部材の外周面から外側に張り出す連接部を介してノック部材に一体的に設けており、
その連接部が前記ノック部材の所定部位であり、
ノック部材が突出位置に復帰するとき、ノック部材の連接部の位置が軸筒の切欠からずれる請求項３記載の筆記具。 A clip capable of sandwiching another object with the outer peripheral surface of the shaft cylinder is provided integrally with the knock member via a connecting portion projecting outward from the outer peripheral surface of the knock member,
The connecting portion is a predetermined part of the knock member,
The writing instrument according to claim 3, wherein when the knock member returns to the protruding position, the position of the connecting portion of the knock member deviates from the notch of the shaft cylinder. 前記自動ロック機構として、前記軸筒において前記ノック部材を受け容れる筒孔の内周面よりも外側に位置するロック姿勢と当該筒孔の内周面よりも内側に位置するアンロック姿勢とをとり得るストッパを前記ノック部材に設けており、
ノック部材が前記突出位置に向けて移動する過程でストッパがアンロック姿勢からロック姿勢に遷移して軸筒の所定部位に係合し、突出位置に復帰したノック部材の進入位置に向けた移動が規制される請求項１記載の筆記具。 As the automatic locking mechanism, a locking posture positioned outside the inner peripheral surface of the cylindrical hole that accepts the knock member in the shaft cylinder and an unlocking posture positioned inside the inner peripheral surface of the cylindrical hole are taken. A stopper to obtain is provided on the knock member,
In the process in which the knock member moves toward the protruding position, the stopper changes from the unlocked position to the locked position, engages with a predetermined portion of the shaft cylinder, and the movement of the knock member toward the entering position returns to the protruding position. The writing instrument according to claim 1 to be regulated. 前記ストッパを、軸心方向に対して交差する軸回りに回動可能であるようにノック部材の基体に支持させており、
ノック部材が進入位置に向かうときに予め使用者の手指により前記アンロック姿勢とされたストッパが基体とともに前記軸筒内に進入し、
ノック部材が突出位置に復帰するときに軸筒内から脱出したストッパが回動して前記ロック姿勢をとる請求項５記載の筆記具。 The stopper is supported on the base of the knock member so as to be rotatable about an axis that intersects the axial direction,
When the knock member goes to the entry position, the stopper that has been in the unlocked posture by the user's fingers in advance enters the shaft cylinder together with the base body,
The writing instrument according to claim 5, wherein when the knock member returns to the protruding position, the stopper that has escaped from the shaft tube rotates to assume the locked posture.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190060340A (en) * 2017-11-24 2019-06-03 동아연필 주식회사 Knock type pen
US10940713B2 (en) 2019-03-07 2021-03-09 Heemangnote Co., Ltd. Thermochromic writing instrument having a separable eraser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190060340A (en) * 2017-11-24 2019-06-03 동아연필 주식회사 Knock type pen
KR102399598B1 (en) * 2017-11-24 2022-05-19 동아연필(주) Knock type pen
US10940713B2 (en) 2019-03-07 2021-03-09 Heemangnote Co., Ltd. Thermochromic writing instrument having a separable eraser

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