JP2011178153A - Writing tool - Google Patents

Writing tool Download PDF

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Publication number
JP2011178153A
JP2011178153A JP2010145649A JP2010145649A JP2011178153A JP 2011178153 A JP2011178153 A JP 2011178153A JP 2010145649 A JP2010145649 A JP 2010145649A JP 2010145649 A JP2010145649 A JP 2010145649A JP 2011178153 A JP2011178153 A JP 2011178153A
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JP
Japan
Prior art keywords
shaft
pen tip
writing
cam
rear direction
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Granted
Application number
JP2010145649A
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Japanese (ja)
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JP2011178153A5 (en
JP5813929B2 (en
Inventor
Yoshihiro Ito
喜博 伊藤
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Pilot Ink Co Ltd
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Pilot Ink Co Ltd
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Priority to JP2010145649A priority Critical patent/JP5813929B2/en
Application filed by Pilot Ink Co Ltd filed Critical Pilot Ink Co Ltd
Priority to CN201410392571.4A priority patent/CN104191862B/en
Priority to CN201180008420.9A priority patent/CN102741061B/en
Priority to TW104115853A priority patent/TWI614148B/en
Priority to EP13183586.0A priority patent/EP2676805B1/en
Priority to CN201510013376.0A priority patent/CN104691157B/en
Priority to SG10201503145QA priority patent/SG10201503145QA/en
Priority to ES17155130T priority patent/ES2825824T3/en
Priority to US13/576,826 priority patent/US9108456B2/en
Priority to PL13183586.0T priority patent/PL2676805T3/en
Priority to SG2012056974A priority patent/SG182835A1/en
Priority to CN201510587925.5A priority patent/CN105128559A/en
Priority to EP17155130.2A priority patent/EP3184320B1/en
Priority to PL11739705T priority patent/PL2532531T3/en
Priority to CA2788724A priority patent/CA2788724C/en
Priority to KR1020197021099A priority patent/KR102098571B1/en
Priority to KR1020187025804A priority patent/KR102004110B1/en
Priority to EP11739705.9A priority patent/EP2532531B1/en
Priority to SG10201900934WA priority patent/SG10201900934WA/en
Priority to ES13183586.0T priority patent/ES2587078T3/en
Priority to EP13183588.6A priority patent/EP2676804B1/en
Priority to ES11739705T priority patent/ES2862911T3/en
Priority to PL17155130T priority patent/PL3184320T3/en
Priority to PCT/JP2011/051905 priority patent/WO2011096357A1/en
Priority to TW100103655A priority patent/TWI522248B/en
Priority to KR1020127020210A priority patent/KR101779233B1/en
Priority to KR1020177025257A priority patent/KR101898408B1/en
Priority to KR1020217008884A priority patent/KR102319864B1/en
Priority to KR1020207007322A priority patent/KR102234299B1/en
Publication of JP2011178153A publication Critical patent/JP2011178153A/en
Publication of JP2011178153A5 publication Critical patent/JP2011178153A5/ja
Priority to HK15103454.6A priority patent/HK1203459A1/en
Priority to HK16104618.6A priority patent/HK1216733A1/en
Priority to HK13104326.2A priority patent/HK1176912A1/en
Priority to HK15109193.9A priority patent/HK1208410A1/en
Priority to HK14104024.6A priority patent/HK1190674A1/en
Priority to US14/794,929 priority patent/US9844973B2/en
Application granted granted Critical
Publication of JP5813929B2 publication Critical patent/JP5813929B2/en
Priority to US15/830,456 priority patent/US10493791B2/en
Priority to US16/658,433 priority patent/US11179963B2/en
Priority to US17/532,043 priority patent/US11738589B2/en
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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a writing tool which enables stable frictional operation using a friction part, further prevents the friction part from being stained, etc., and also increases a degree of freedom in appearance design. <P>SOLUTION: A pop in/out mechanism for extruding a stored pen tip 91 of a writing tool 9 has, in a shaft tube 2, a plurality of cam teeth and cam grooves which are alternately arranged along the peripheral direction and extended in the forward/backward directions; a rotation member 6 rotatably arranged behind the writing tool 9 having a plurality of protrusions to be alternately engaged with the cam teeth and the cam grooves; a plurality of other cam teeth which are arranged at an operation body 7 and rotates the rotation member 6; and a resilient body 8 which presses the writing tool 9 backward.A shaft part is arranged at the operation body 7. The shaft part and the rotation member 6 are locked with a space in the forward/backward directions. The operation body 7 is slid forward against the pressing force of the resilient body 8. The protrusions 61 are alternately engaged with the cam teeth or the cam grooves at different positions in the forward/backward directions, to pop out/in the pen tip 91 of the writing tool 9. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、筆記具に関する。詳細には、筆記体を軸筒内に前後方向に移動可能に収容し、前記筆記体のペン先を軸筒の前端孔から出没可能に構成した筆記具に関する。   The present invention relates to a writing instrument. Specifically, the present invention relates to a writing instrument in which a writing body is accommodated in a shaft cylinder so as to be movable in the front-rear direction, and a pen tip of the writing body is configured to be able to appear and retract from a front end hole of the shaft cylinder.

特許文献１には、軸筒内に筆記体を前後方向に移動可能に収容し、軸筒の外面に操作部を設け、前記操作部を操作することにより前記筆記体のペン先を軸筒の前端孔から出没可能に構成し、前記筆記体の内部に熱変色性インキを収容し、前記筆記体の前端に前記熱変色性インキが吐出可能なペン先を設け、前記軸筒の外面に、前記熱変色性インキの筆跡を摩擦しその際に生じる摩擦熱で該筆跡を熱変色可能な摩擦部を設けた熱変色性筆記具が開示されている。   In Patent Document 1, a writing body is accommodated in a shaft cylinder so as to be movable in the front-rear direction, an operation portion is provided on an outer surface of the shaft tube, and the pen tip of the writing body is attached to the shaft tube by operating the operation portion. It is configured to be able to appear and retract from a front end hole, accommodates thermochromic ink inside the cursive body, provides a pen tip capable of ejecting the thermochromic ink at the front end of the cursive body, on the outer surface of the shaft cylinder, There has been disclosed a thermochromic writing instrument provided with a friction portion capable of thermally changing the handwriting with frictional heat generated by rubbing the handwriting of the thermochromic ink.

前記特許文献１は、軸筒後端の操作部を前方に押圧するタイプにおいて操作部に摩擦部を設けた場合、該摩擦部を用いて摩擦操作すると、被筆記面によって操作部が前方に移動し、安定した摩擦操作を行うことができないおそれがある。特に、ペン先突出操作及びペン先没入操作のいずれもが操作部を前方に押圧操作するタイプの出没機構（いわゆるダブルノック式）を採用し且つ操作部に摩擦部を設けた場合、ペン先突出状態において操作体が前後方向にがたつき、安定した摩擦操作を行うことができないおそれがある。   In Patent Document 1, when a friction part is provided in the operation part in the type in which the operation part at the rear end of the shaft cylinder is pressed forward, the operation part moves forward by the writing surface when a friction operation is performed using the friction part. However, there is a possibility that a stable friction operation cannot be performed. In particular, when both a pen tip protruding operation and a pen tip immersing operation employ a retracting mechanism (so-called double knock type) that pushes the operating portion forward and a friction portion is provided in the operating portion, the pen tip protrudes. In this state, the operating body may rattle in the front-rear direction, and a stable friction operation may not be performed.

また、特許文献１の図１２には、筒状の操作部を前後方向に移動可能に設け、前記筒状の操作部の外面にポケット等に挟持可能なクリップを突設し、前記筒状の操作部の後端外面に摩擦部を設けた構成が開示されている。しかし、この構成の熱変色性筆記具は、ペン先の出没操作時に摩擦部を押圧するため、摩擦部が手垢等で汚れるおそれがある。そして、前記摩擦部が汚れた状態で熱変色性インキの筆跡を摩擦した場合、筆跡を有する被筆記面（例えば紙面）が汚れるおそれがある。   Further, in FIG. 12 of Patent Document 1, a cylindrical operation portion is provided so as to be movable in the front-rear direction, and a clip that can be sandwiched in a pocket or the like is provided on the outer surface of the cylindrical operation portion. The structure which provided the friction part in the rear-end outer surface of the operation part is disclosed. However, since the thermochromic writing instrument having this configuration presses the friction portion during the pen tip operation, the friction portion may be soiled with dirt or the like. When the handwriting of the thermochromic ink is rubbed in a state where the friction portion is dirty, the writing surface (for example, paper surface) having the handwriting may be stained.

また、特許文献１の図１５には、操作部を軸筒側壁より径方向外方に突出させ、前記操作部を後方付勢に抗して前方に押圧操作することにより、ペン先没入状態からペン先突出状態にする構成（いわゆる多芯タイプのサイドスライド式）の出没機構を備え、軸筒の後端外面に摩擦部を設けた構成が開示されている。しかし、この構成の熱変色性筆記具は、ペン先突出状態からペン先没入状態にする際（ペン先突出状態を解除する際）、他の筆記体に取り付けられた操作体を操作しなければならない。そのため、複数の操作体（即ち複数の突出部分）を設ける必要があり、外観デザイン上の自由度が減少する。さらには、ポケット等に挟持可能なクリップを軸筒に設ける場合、より一層、突出部分が増え、外観デザイン上の自由度が減少する。   Further, in FIG. 15 of Patent Document 1, the operation portion is protruded radially outward from the side wall of the shaft cylinder, and the operation portion is pushed forward against the rear bias, thereby removing the pen tip from the immersive state. A configuration is disclosed in which a pen tip protruding state (so-called multi-core type side slide type) protruding and retracting mechanism is provided, and a friction portion is provided on the outer surface of the rear end of the shaft cylinder. However, the thermochromic writing instrument with this configuration must operate an operating tool attached to another writing tool when the pen tip protrudes from the pen tip protruding state (when the pen tip protruding state is canceled). . Therefore, it is necessary to provide a plurality of operating bodies (that is, a plurality of protruding portions), and the degree of freedom in appearance design is reduced. Furthermore, when a clip that can be held in a pocket or the like is provided on the shaft tube, the protruding portion is further increased, and the degree of freedom in appearance design is reduced.

国際公開第２００８／１０５２２７号パンフレットInternational Publication No. 2008/105227 Pamphlet

本発明は前記従来の問題点を解決するものであって、摩擦部を用いて安定した摩擦操作が可能となり、さらに、摩擦部が手垢等で汚れることを回避でき、しかも、外観デザイン上の自由度が増加する筆記具を提供しようとするものである。また、本発明は、ユーザーが操作方法を容易に習得できる、操作方法が簡単な筆記具を提供しようとするものである。また、本発明は、クリップ体をスリット孔に容易に挿入することができる筆記具を提供しようとするものである。また、本発明は、軸筒全体が不必要に長くなることを回避できる筆記具を提供しようとするものである。また、本発明は、ペン先突出状態でクリップ体の近傍を把持しても、安定した摩擦操作が可能となる筆記具を提供しようとするものである。また、本発明は、クリップ体の挟持性能が向上するとともにクリップ体のぐらつきを防止できる筆記具を提供しようとするものである。また、本発明は、ペン先突出状態からペン先没入状態にする際、筆記体に加わる衝撃を緩和できる筆記具を提供しようとするものである。   The present invention solves the above-mentioned conventional problems, enables a stable friction operation using the friction part, and further prevents the friction part from being soiled with hand dirt, etc. It is intended to provide a writing instrument of increasing degree. The present invention is also intended to provide a writing instrument with a simple operation method that allows the user to easily learn the operation method. The present invention also aims to provide a writing instrument in which the clip body can be easily inserted into the slit hole. The present invention is also intended to provide a writing instrument that can prevent the entire shaft cylinder from becoming unnecessarily long. The present invention is also intended to provide a writing instrument that can perform a stable friction operation even when the vicinity of the clip body is gripped in a state where the pen tip protrudes. In addition, the present invention is intended to provide a writing instrument capable of improving the clip body clamping performance and preventing the clip body from wobbling. In addition, the present invention is to provide a writing instrument that can alleviate the impact applied to the cursive body when the pen tip protrudes from the pen tip protruding state.

尚、本発明で、「前」とは、ペン先側を指し、「後」とは、その反対側を指す。尚、本発
明で、「ペン先没入状態」とは、ペン先が軸筒内に没入した状態をいい、「ペン先突出状
態」とは、ペン先が軸筒の前端より外部に突出した状態をいう。また、本発明で、「ペン
先没入操作」とは、ペン先突出状態からペン先没入状態にする操作をいい、「ペン先突出
操作」とは、ペン先没入状態からペン先突出状態にする操作をいう。 In the present invention, “front” refers to the pen tip side, and “rear” refers to the opposite side. In the present invention, the “pen nib immersive state” refers to a state in which the pen nib is immersed in the shaft cylinder, and the “pen nib protruding state” refers to a state in which the pen nib projects outward from the front end of the shaft cylinder. Say. Further, in the present invention, the “pen tip immersing operation” refers to an operation for changing the pen tip from the pen tip protruding state to the pen tip immersing state, and the “pen tip protruding operation” is a state where the pen tip immersing state is changed to the pen tip protruding state. An operation.

＜１＞本願の第１の発明は、筆記体９を軸筒２内に収容し、軸筒２に設けた操作体７を操作して前記筆記体９を前後方向に移動させ、前記筆記体９のペン先９１を筆記具１の先端から出没可能に構成した筆記具１であって、前記軸筒２の側壁に設けた前後方向に延びるスライド孔２１と、前記スライド孔２１に配設した前記操作体７を前方へスライド操作することで、前記筆記体９のペン先９１を没入状態から突出状態にする出没機構とを有し、前記出没機構として、円周方向に沿って交互に配置された前後方向に延びる複数のカム歯４１ａ及びカム溝４１ｂと、前記筆記体９の後方に回転可能に配置され、前記カム歯４１ａ又は前記カム溝４１ｂに交互に係合可能な複数の突条６１を有する回転部材６と、前記操作体７に設けられ、前記回転部材６を回動させる複数の他のカム歯７３ａと、前記筆記体９を後方に付勢する弾発体８と、を前記軸筒２内に備え、前記操作体７には、前記軸筒２内に収容され且つ前後方向に延びる軸部７３を設け、前記軸部７３と前記回転部材６とが、前後方向のあそびを有する状態で互いに係止され、前記弾発体８の付勢力に抗して、前記操作体７を前方へスライド操作することにより、前記突条６１を、前記カム歯４１ａ又は前記カム溝４１ｂに交互に前後方向の異なる位置で係合させ、前記筆記体９のペン先９１を交互に突出状態又は没入状態にすることを要件とする。 <1> In the first invention of the present application, the writing body 9 is accommodated in the shaft cylinder 2, the operation body 7 provided on the shaft cylinder 2 is operated to move the writing body 9 in the front-rear direction, and the writing body 9 is a writing instrument 1 configured to be able to protrude and retract from the tip of the writing instrument 1, the slide hole 21 provided in the side wall of the shaft cylinder 2 extending in the front-rear direction, and the operation provided in the slide hole 21 By sliding the body 7 forward, the pen tip 91 of the writing body 9 has an in / out mechanism that makes the pen tip 91 project from an indented state, and the in / out mechanism is alternately arranged along the circumferential direction. A plurality of cam teeth 41a and cam grooves 41b extending in the front-rear direction, and a plurality of protrusions 61 that are rotatably arranged behind the writing body 9 and can be alternately engaged with the cam teeth 41a or the cam grooves 41b. The rotating member 6 and the operating body 7, A plurality of other cam teeth 73a that rotate the member 6 and a resilient body 8 that urges the writing body 9 backward are provided in the shaft cylinder 2, and the operating body 7 includes the shaft cylinder. 2 and provided with a shaft portion 73 that extends in the front-rear direction, and the shaft portion 73 and the rotating member 6 are engaged with each other in a state of having a play in the front-rear direction. On the contrary, by sliding the operating body 7 forward, the ridges 61 are alternately engaged with the cam teeth 41a or the cam grooves 41b at different positions in the front-rear direction. It is a requirement that the pen tip 91 be alternately in a protruding state or an immersive state.

前記第１の発明の筆記具１は、出没機構が、回転カム機構を用いたサイドスライド式出没機構であり、ペン先突出操作及びペン先没入操作の何れもが操作体７を前方にスライド操作するタイプ（いわゆるダブルノック式の出没機構）であるため、操作方法が簡単であり、ユーザーが操作方法を容易に習得できる。また、前記操作体７が、前記軸筒２内に収容され且つ前後方向に延びる軸部７３を有し、前記軸部７３と前記回転部材６とが、互いに回転可能且つ互いに前後方向のあそびを有した状態で前後方向に係止されることにより、ペン先突出状態において、回転部材６がカム部４１のカム歯４１ａに係止され、回転部材６の後方移動が阻止されるとともに、操作体７の不用意な前後方向の移動が抑えられる。   In the writing instrument 1 according to the first aspect of the present invention, the retracting mechanism is a side slide type retracting mechanism using a rotating cam mechanism, and both the pen tip protruding operation and the pen tip retracting operation slide the operating body 7 forward. Since it is a type (so-called double knock type in / out mechanism), the operation method is simple and the user can easily learn the operation method. The operating body 7 has a shaft portion 73 that is accommodated in the shaft tube 2 and extends in the front-rear direction, and the shaft portion 73 and the rotating member 6 are rotatable with respect to each other and play with each other in the front-rear direction. In this state, the rotary member 6 is locked to the cam teeth 41a of the cam portion 41 in the pen tip protruding state, and the backward movement of the rotary member 6 is prevented, and the operating body 7 inadvertent movement in the front-rear direction is suppressed.

＜２＞本願の第２の発明は、前記軸筒２が互いに連結可能な複数の部品からなり、前記軸筒２を構成する二つの前記部品の各側壁に、前方又は後方が開放され且つ前後方向に延びる第１又は第２の長孔４４、５１をそれぞれ設け、二つの前記部品を連結したときに、前記第１及び第２の長孔４４、５１が、互いに連通して前記スライド孔２１を形成することを要件とする。 <2> In the second invention of the present application, the shaft cylinder 2 is composed of a plurality of parts that can be connected to each other. When the two parts are connected to each other, the first and second long holes 44 and 51 communicate with each other to connect the slide hole 21. Is a requirement.

前記第２発明の筆記具１は、前方又は後方に開放された第１の長孔４４と第２の長孔５１とでスライド孔２１を形成したことによって、クリップ体７の軸部７３をスライド孔２１に容易に挿入することができる。   In the writing instrument 1 of the second invention, the slide hole 21 is formed by the first long hole 44 and the second long hole 51 that are opened forward or rearward, so that the shaft portion 73 of the clip body 7 is moved into the slide hole. 21 can be easily inserted.

＜３＞本願の第３の発明は、前記軸筒２を構成する二つの前記部品の各側壁を、互いに径方向に重なるように連結し、前記第１及び第２の長孔４４、５１が、互いに径方向に重なった状態で連通して前記スライド孔２１を形成することを要件とする。 <3> In the third invention of the present application, the side walls of the two parts constituting the shaft cylinder 2 are connected so as to overlap each other in the radial direction, and the first and second elongated holes 44 and 51 are formed. It is a requirement that the slide hole 21 is formed so as to communicate with each other in a state where they overlap each other in the radial direction.

前記第３の発明の筆記具１は、前記中間軸４の側壁と前記後軸５の側壁とを互いに径方向に重なるように連結し、前記第１の長孔４４と前記第２の長孔５１とを径方向に連通させたことにより、軸筒２全体が不必要に長くなることを回避できる。尚、本発明で、前記中間軸４の側壁と前記後軸５の側壁とを互いに径方向に重なるように連結するとは、例えば、中間軸４の側壁外面と後軸５の側壁内面とを径方向に重なるように連結（例えば嵌合や螺合）させる構成、または、中間軸４の側壁内面と後軸５の側壁外面とを径方向に重なるように連結（例えば嵌合や螺合）させる構成が挙げられる。前記中間軸４の側壁と前記後軸５の側壁とを互いに径方向に重なるように連結する構成は、少なくとも、前記中間軸４の側壁の一部と前記後軸５の側壁の一部とが互いに径方向に重なるように連結する構成であればよい。   In the writing instrument 1 of the third invention, the side wall of the intermediate shaft 4 and the side wall of the rear shaft 5 are connected so as to overlap each other in the radial direction, and the first long hole 44 and the second long hole 51 are connected. Can be prevented from becoming unnecessarily long. In the present invention, to connect the side wall of the intermediate shaft 4 and the side wall of the rear shaft 5 so as to overlap each other in the radial direction, for example, the outer surface of the side wall of the intermediate shaft 4 and the inner surface of the side wall of the rear shaft 5 are connected. A structure for coupling (for example, fitting or screwing) so as to overlap in the direction, or a connection (for example, fitting or screwing) so that the inner wall of the intermediate shaft 4 and the outer wall of the rear shaft 5 overlap in the radial direction. A configuration is mentioned. The configuration in which the side wall of the intermediate shaft 4 and the side wall of the rear shaft 5 are connected so as to overlap each other in the radial direction is such that at least a part of the side wall of the intermediate shaft 4 and a part of the side wall of the rear shaft 5 What is necessary is just the structure connected so that it may mutually overlap in a radial direction.

＜４＞本願の第４の発明は、前記操作体７を、クリップ本体７１が前記スライド孔２１より突出するクリップ体７としたことを要件とする。 <4> The fourth invention of the present application requires that the operation body 7 is the clip body 7 in which the clip body 71 protrudes from the slide hole 21.

前記第４の発明の筆記具１は、軸筒２外面にクリップ体７を設けたにもかかわらず、従来の多芯タイプのサイドスライド式の筆記具に比べ、突出部分が少なく、外観デザイン上の自由度が増加し、スマートな外観を得ることができる。尚、本発明において、前記クリップ体７は、軸筒２外面との間において衣類のポケットや手帳等の被挟持物に挟持可能なものである。   The writing instrument 1 according to the fourth aspect of the present invention has fewer protruding parts than the conventional multi-core type side slide type writing instrument, despite the provision of the clip body 7 on the outer surface of the shaft tube 2, and is free in appearance design. The degree increases and a smart appearance can be obtained. In addition, in this invention, the said clip body 7 can be pinched | interposed into to-be-clamped objects, such as a pocket and a notebook of clothes, between the axial cylinders 2 outer surface.

尚、本発明において、前記摩擦部１０は、少なくとも摩擦操作時に、前記摩擦部１０を軸筒２の後端に固定する構成であればよく、例えば、摩擦部１０が、ペン先出没操作以外の操作により軸筒２後端より出没する構成であってもよい。尚、本発明で、摩擦操作時とは、摩擦部１０を用いて摩擦操作する時をいう。前記摩擦操作時において、ペン先突出状態またはペン先没入状態のいずれであってもよい。   In the present invention, the friction portion 10 may be configured to fix the friction portion 10 to the rear end of the shaft tube 2 at least during a friction operation. For example, the friction portion 10 may be other than the pen tip operation. The structure which protrudes and protrudes from the rear end of the axial cylinder 2 by operation may be sufficient. In the present invention, the time of friction operation means the time of friction operation using the friction portion 10. At the time of the friction operation, either the pen tip protruding state or the pen tip immersing state may be used.

本発明の筆記具は、摩擦部を用いて安定した摩擦操作が可能となり、さらに、摩擦部が手垢等で汚れることを回避でき、しかも、外観デザイン上の自由度が増加し、スマートな外観を得ることができる。これに加え、本発明の筆記具は、以下の作用効果を奏する。
（１）操作方法が簡単で、ユーザーが操作方法を容易に習得できる。
（２）ペン先突出状態において操作体の不用意な前後方向の移動が抑えられる。
（３）操作体をスライド孔に容易に挿入することができ、軸筒全体が不必要に長くなることを回避できる。
（４）従来の多芯タイプのサイドスライド式の筆記具に比べ、突出部分が少なく、外観デザイン上の自由度が増加し、スマートな外観を得ることができる。
The writing instrument of the present invention enables a stable friction operation using the friction part, and further, can prevent the friction part from being soiled by hand dirt, etc., and further increases the degree of freedom in appearance design and obtains a smart appearance. be able to. In addition, the writing instrument of the present invention has the following effects.
(1) The operation method is simple and the user can easily learn the operation method.
(2) Inadvertent movement of the operating body in the front-rear direction is suppressed in the pen tip protruding state.
(3) The operating body can be easily inserted into the slide hole, and it is possible to avoid the entire shaft cylinder from becoming unnecessarily long.
(4) Compared to a conventional multi-core type side slide type writing instrument, there are few protruding parts, the degree of freedom in appearance design is increased, and a smart appearance can be obtained.

本発明の第１の実施の形態のペン先没入状態を示す側面図である。It is a side view which shows the nib immersion state of the 1st Embodiment of this invention. 図１の正面図である。It is a front view of FIG. 図１のペン先突出状態を示す側面図である。It is a side view which shows the pen tip protrusion state of FIG. 図１の縦断面図である。It is a longitudinal cross-sectional view of FIG. 図１の前軸の拡大縦断面図である。FIG. 2 is an enlarged longitudinal sectional view of a front shaft in FIG. 1. 図１の中間軸の拡大縦断面図及び回転部材の拡大正面図である。FIG. 2 is an enlarged longitudinal sectional view of an intermediate shaft in FIG. 1 and an enlarged front view of a rotating member. 図１の後軸の拡大縦断面図及び摩擦部の拡大正面図である。FIG. 2 is an enlarged longitudinal sectional view of a rear shaft of FIG. 1 and an enlarged front view of a friction portion. 図１のクリップ体の拡大側面図である。It is an enlarged side view of the clip body of FIG. 第１の実施の形態におけるクリップ体の他の例を示す拡大縦断面図である。It is an expanded longitudinal cross-sectional view which shows the other example of the clip body in 1st Embodiment. 熱変色性インキの変色挙動を示す説明図である。It is explanatory drawing which shows the color change behavior of a thermochromic ink. 本発明の第２の実施の形態のペン先没入状態を示す側面図である。It is a side view which shows the pen tip immersion state of the 2nd Embodiment of this invention. 図１１の正面図である。It is a front view of FIG. 図１１のペン先突出状態を示す側面図である。It is a side view which shows the pen tip protrusion state of FIG. 図１１の縦断面図である。It is a longitudinal cross-sectional view of FIG. 図１４のＡ−Ａ線拡大断面図である。It is an AA line expanded sectional view of FIG. 図１４のＢ−Ｂ線拡大断面図である。It is the BB line expanded sectional view of FIG. 図１１のペン先突出状態の縦断面図である。It is a longitudinal cross-sectional view of the pen tip protruding state of FIG. 図１１の前軸の拡大縦断面図である。FIG. 12 is an enlarged longitudinal sectional view of the front shaft of FIG. 11. 図１１の中間軸の拡大正面図である。It is an enlarged front view of the intermediate shaft of FIG. （ａ）が図１９のＣ−Ｃ線断面図、（ｂ）が図１９のＤ−Ｄ線断面図、（ｃ）が図１９のＥ−Ｅ線断面図、（ｄ）が図１９のＦ−Ｆ線断面図である。19A is a cross-sectional view taken along line CC in FIG. 19, FIG. 19B is a cross-sectional view taken along line DD in FIG. 19, FIG. 19C is a cross-sectional view taken along line EE in FIG. FIG. 図１１の中間軸の拡大縦断面図である。FIG. 12 is an enlarged longitudinal sectional view of the intermediate shaft in FIG. 11. 図１１の後軸の拡大正面図である。FIG. 12 is an enlarged front view of the rear shaft of FIG. 11. 図２２のＧ−Ｇ線断面図である。It is the GG sectional view taken on the line of FIG. 図１１の後軸の拡大縦断面図である。FIG. 12 is an enlarged longitudinal sectional view of the rear shaft of FIG. 11. 図１１の後軸と摩擦部との取付状態を示す拡大縦断面図である。FIG. 12 is an enlarged longitudinal sectional view showing a state where the rear shaft and the friction portion are attached to FIG. 11. 図１１のクリップ体を省略した要部拡大正面図である。It is a principal part enlarged front view which abbreviate | omitted the clip body of FIG. 図１１のクリップ体の拡大縦断面図である。It is an expansion longitudinal cross-sectional view of the clip body of FIG. 図１１のクリップ体の円筒体を除いたクリップ体主要部の拡大側面図である。It is an enlarged side view of the clip body principal part except the cylindrical body of the clip body of FIG. 図１１のクリップ体の円筒体の拡大正面図である。It is an enlarged front view of the cylindrical body of the clip body of FIG. 図１１のクリップ体の円筒体の拡大平面図である。It is an enlarged plan view of the cylindrical body of the clip body of FIG. 図１１のクリップ体の円筒体の拡大縦断面図である。It is an expansion longitudinal cross-sectional view of the cylindrical body of the clip body of FIG. 図１１の回転部材の拡大正面図である。It is an enlarged front view of the rotating member of FIG. 図１１の回転部材の拡大縦断面図である。FIG. 12 is an enlarged longitudinal sectional view of the rotating member of FIG. 11. 図１１のクリップ体主要部、円筒体、回転部材、中間軸、及び後軸を示す分解図である。It is an exploded view which shows the clip body main part of FIG. 11, a cylindrical body, a rotation member, an intermediate shaft, and a rear shaft. 図１１のペン先突出状態（図１７）の要部拡大縦断面図である。It is a principal part expanded longitudinal cross-sectional view of the pen tip protrusion state (FIG. 17) of FIG.

＜第１の実施の形態＞
図１及び図９に本発明の第１の実施の形態を示す。
本実施の形態の熱変色性筆記具１は、軸筒２と、該軸筒２内に収容される筆記体９と、該体９のペン先９１を軸筒２の前端孔３１より出没自在にさせる出没機構とを備える。 <First Embodiment>
1 and 9 show a first embodiment of the present invention.
The thermochromic writing instrument 1 of the present embodiment has a shaft tube 2, a writing body 9 accommodated in the shaft tube 2, and a pen tip 91 of the body 9 that can be projected and retracted from a front end hole 31 of the shaft tube 2. And a haunting mechanism.

・筆記体
前記筆記体９は、ペン先９１と、該ペン先９１が前端開口部に圧入固着されたインキ収容管９２と、該インキ収容管９２内に充填される熱変色性インキと、該熱変色性インキの後端に充填され且つ該熱変色性インキの消費に伴い前進する追従体（例えば高粘度流体）とからなる。 Writing body The writing body 9 includes a pen tip 91, an ink storage tube 92 in which the pen tip 91 is press-fitted and fixed to the front end opening, a thermochromic ink filled in the ink storage tube 92, It consists of a follower (for example, a high-viscosity fluid) that fills the rear end of the thermochromic ink and moves forward as the thermochromic ink is consumed.

前記ペン先９１は、例えば、前端に回転可能にボールを抱持した金属製のボールペンチップのみからなる構成、または前記ボールペンチップの後部外面を保持した合成樹脂製のペン先ホルダーからなる構成のいずれであってもよい。また、前記インキ収容管９２の後端開口部に、インキ収容管９２と外部とが通気可能な通気孔を備えた尾栓９５が取り付けられる。前記ペン先９１の内部には、前端のボールを前方に押圧するスプリングが収容される。前記スプリングは、圧縮コイルスプリングの前端部にロッド部を備えた構成であり、前記ロッド部の前端がボール後面に接触している。非筆記時、前記スプリングの前方付勢によりボールがボールペンチップ前端の内向きの前端縁部内面に密接され、ペン先９１の前端からのインキの漏出及びインキの蒸発を防止できる。   The nib 91 is composed of, for example, either a metal ballpoint pen tip having a ball rotatably held at the front end, or a synthetic resin nib holder holding the rear outer surface of the ballpoint pen tip. It may be. A tail plug 95 having a vent hole through which the ink containing tube 92 and the outside can be vented is attached to the rear end opening of the ink containing tube 92. A spring that presses the ball at the front end forward is housed inside the nib 91. The spring includes a rod portion at a front end portion of a compression coil spring, and the front end of the rod portion is in contact with the rear surface of the ball. When not writing, the ball is brought into close contact with the inner surface of the front end edge portion of the front end of the ballpoint pen tip by the forward urging of the spring, and ink leakage from the front end of the pen tip 91 and ink evaporation can be prevented.

・軸筒
前記軸筒２は、先細円筒状の前軸３と、該前軸３の後端部に連結される円筒状の中間軸４と、該中間軸４の後端部に連結される円筒状の後軸５とからなる。 Shaft cylinder The shaft cylinder 2 is connected to a tapered cylindrical front shaft 3, a cylindrical intermediate shaft 4 connected to the rear end portion of the front shaft 3, and a rear end portion of the intermediate shaft 4. It consists of a cylindrical rear shaft 5.

図５に前軸３を示す。前記前軸３は、合成樹脂（例えば、ポリカーボネート樹脂）の成形体からなる先細円筒状の本体３ａと、該本体３ａ外面に設けられる弾性材料からなる把持部３ｂとからなる。前記把持部３ｂは、２色成形または本体３ａ外面への装着により設けられる。前記前軸３の後端部は縮径され、その外面にはオネジ部３２が形成される。前記前軸３の前端には、前端孔３１が前後方向に貫設される。   FIG. 5 shows the front shaft 3. The front shaft 3 includes a tapered cylindrical main body 3a made of a synthetic resin (for example, polycarbonate resin) molded body and a grip portion 3b made of an elastic material provided on the outer surface of the main body 3a. The grip portion 3b is provided by two-color molding or mounting on the outer surface of the main body 3a. The rear end portion of the front shaft 3 is reduced in diameter, and a male screw portion 32 is formed on the outer surface thereof. A front end hole 31 is provided in the front end of the front shaft 3 in the front-rear direction.

図６に中間軸４を示す。前記中間軸４は、円筒状の合成樹脂（例えば、ポリカーボネート樹脂）の成形体からなる。前記中間軸４の前端部内面には、メネジ部４６が形成される。前記メネジ部４６に前記前軸３のオネジ部３２が螺合可能である。前記中間軸４の後端部には、縮径部４３が一体に形成される。前記縮径部４３には、前端が閉鎖され且つ後端が開放された、前後方向に延びる第１の長孔４４が形成される。さらに、前記縮径部４３の外面には外向突起４５が一体に形成される。前記縮径部４３より前方の前記中間軸４の内面には、段部４２が一体に形成される。前記段部４２よりも前方の前記中間軸４の内面（前記中間軸４の第１の長孔４４よりも前方の内面）には、カム部４１が一体に形成される。また、前記段部４２は、前記カム部４１の後方且つ第１の長孔４４の前方（即ちカム部４１と第１の長孔４４との間）の中間軸４の内面に一体に形成される。また、前記中間軸４の外面には、係止突起４７が一体に形成される。ペン先没入状態において、前記係止突起４７とクリップ体７の玉部７１ａとの間でポケット等の被挟持物が挟持可能である。   FIG. 6 shows the intermediate shaft 4. The intermediate shaft 4 is formed of a cylindrical synthetic resin (for example, polycarbonate resin) molded body. A female thread portion 46 is formed on the inner surface of the front end portion of the intermediate shaft 4. The male screw portion 32 of the front shaft 3 can be screwed into the female screw portion 46. A reduced diameter portion 43 is integrally formed at the rear end portion of the intermediate shaft 4. The reduced diameter portion 43 is formed with a first long hole 44 extending in the front-rear direction, having a front end closed and a rear end open. Furthermore, outward projections 45 are integrally formed on the outer surface of the reduced diameter portion 43. A step portion 42 is integrally formed on the inner surface of the intermediate shaft 4 in front of the reduced diameter portion 43. A cam portion 41 is integrally formed on the inner surface of the intermediate shaft 4 in front of the step portion 42 (inner surface in front of the first long hole 44 of the intermediate shaft 4). The step portion 42 is integrally formed on the inner surface of the intermediate shaft 4 behind the cam portion 41 and in front of the first long hole 44 (that is, between the cam portion 41 and the first long hole 44). The A locking projection 47 is integrally formed on the outer surface of the intermediate shaft 4. In the pen tip immersion state, an object to be clamped such as a pocket can be clamped between the locking projection 47 and the ball portion 71 a of the clip body 7.

図７に後軸５を示す。前記後軸５は、円筒状の合成樹脂（例えば、ポリカーボネート樹脂）の成形体からなる。前記後軸５の前端部側壁には、前端が開放され且つ後端が閉鎖された、前後方向に延びる第２の長孔５１が形成される。また、前記後軸５の後端には、取付孔５２が前後方向に貫設される。前記取付孔５２に弾性材料からなる摩擦部１０が圧入嵌合される。それにより、前記後軸５の後端外面に摩擦部１０が固定される。また、前記後軸５の内面には、内向突起５３が一体に形成される。前記第２の長孔５１の幅寸法は、前記第１の長孔４４の幅寸法と等しく設定され、それにより、スライド孔２１に沿ってクリップ体７の前後方向のスムーズな移動が可能となる。   FIG. 7 shows the rear shaft 5. The rear shaft 5 is made of a molded body of a cylindrical synthetic resin (for example, polycarbonate resin). The front end side wall of the rear shaft 5 is formed with a second long hole 51 extending in the front-rear direction with the front end open and the rear end closed. A mounting hole 52 is provided in the rear end of the rear shaft 5 in the front-rear direction. The friction portion 10 made of an elastic material is press-fitted into the mounting hole 52. Thereby, the friction part 10 is fixed to the outer surface of the rear end of the rear shaft 5. An inward projection 53 is integrally formed on the inner surface of the rear shaft 5. The width dimension of the second long hole 51 is set to be equal to the width dimension of the first long hole 44, thereby enabling the clip body 7 to move smoothly in the front-rear direction along the slide hole 21. .

図８にクリップ体７を示す。前記クリップ体７は、前後方向に延びるクリップ本体７１と、該クリップ本体７１の後部に一体に連設される基部７２と、該基部７２と一体に連設され且つ基部７２より前方に延びる筒状の軸部７３とからなる。前記クリップ体７は、合成樹脂（例えば、ポリカーボネート樹脂）の成形体により得られる。前記クリップ本体７１の、裏面（内面）に玉部７１ａが突設される。前記軸部７３の前端には、カム歯７３ａが一体に形成される。   FIG. 8 shows the clip body 7. The clip body 7 includes a clip main body 71 extending in the front-rear direction, a base 72 integrally connected to the rear portion of the clip main body 71, and a cylindrical shape integrally connected to the base 72 and extending forward from the base 72. The shaft portion 73. The clip body 7 is obtained by a synthetic resin (for example, polycarbonate resin) molded body. A ball portion 71 a projects from the back surface (inner surface) of the clip body 71. Cam teeth 73 a are integrally formed at the front end of the shaft portion 73.

・クリップ体の組立
前記クリップ体７の組立について説明する。
前記中間軸４の第１の長孔４４の後端開放部より、該第１の長孔４４内にクリップ体７の基部７２を挿入するとともに、クリップ体７の筒状の軸部７３を中間軸４内に挿入する。その後、中間軸４の第１の長孔４４と後軸５の第２の長孔５１とを径方向に連通させるように（径方向に重なるように）、前記後軸５の内面を前記中間軸４の縮径部４３の外面に嵌合させるとともに、クリップ体７の基部７２を、第２の長孔５１の前端開放部より、該第２の長孔５１内に挿入する。それにより、前記中間軸４と前記後軸５とが連結され、前記第１の長孔４４と第２の長孔５１とにより、前後方向に延びるスライド孔２１が形成されるとともに、前記スライド孔２１より径方向外方にクリップ体７（クリップ本体７１及び基部７２の一部）が突出され、前記クリップ体７がスライド孔２１に沿って前後方向にスライド可能（前後方向に摺動可能）に構成される。尚、このとき、前記中間軸４の縮径部４３外面の外向突起４５と後軸５の内面の内向突起５３が乗り越え係合される。 -Assembly of a clip body The assembly of the said clip body 7 is demonstrated.
The base 72 of the clip body 7 is inserted into the first long hole 44 from the rear end opening portion of the first long hole 44 of the intermediate shaft 4, and the cylindrical shaft portion 73 of the clip body 7 is placed in the middle. Insert into the shaft 4. Thereafter, the inner surface of the rear shaft 5 is connected to the middle so that the first long hole 44 of the intermediate shaft 4 and the second long hole 51 of the rear shaft 5 communicate with each other in the radial direction (so as to overlap in the radial direction). The base portion 72 of the clip body 7 is inserted into the second long hole 51 from the front end opening portion of the second long hole 51 while being fitted to the outer surface of the reduced diameter portion 43 of the shaft 4. Thereby, the intermediate shaft 4 and the rear shaft 5 are connected to each other, and the first long hole 44 and the second long hole 51 form a slide hole 21 extending in the front-rear direction, and the slide hole The clip body 7 (a part of the clip main body 71 and the base 72) protrudes radially outward from 21 and can be slid in the front-rear direction along the slide hole 21 (slidable in the front-rear direction). Composed. At this time, the outward projection 45 on the outer surface of the reduced diameter portion 43 of the intermediate shaft 4 and the inward projection 53 on the inner surface of the rear shaft 5 get over and engage.

前記摩擦部１０が固定された後軸５を中間軸４の後端部に連結することによって、前記摩擦部１０が軸筒２の後端に常時固定される。また、前軸３と中間軸４とが螺合により着脱自在に連結され、それにより、筆記体９を交換可能にできる。   By connecting the rear shaft 5 to which the friction portion 10 is fixed to the rear end portion of the intermediate shaft 4, the friction portion 10 is always fixed to the rear end of the shaft tube 2. Further, the front shaft 3 and the intermediate shaft 4 are detachably connected by screwing, whereby the writing body 9 can be exchanged.

・出没機構
前記出没機構は、回転カム機構を用いたサイドスライド式出没機構である。前記出没機構は、中間軸４内面に形成されたカム部４１と、該カム部４１に係合し且つ筆記体９の後端に当接する回転部材６と、該回転部材６に係合し且つスライド孔２１より径方向外方に突出するクリップ体７と、軸筒２内に収容され且つ筆記体９を後方に付勢する弾発体８（例えば圧縮コイルスプリング）とからなる。本実施の形態の出没機構は、ペン先突出操作及びペン先没入操作のいずれもがクリップ体７を前方にスライド操作するダブルノック式である。前記回転部材６は合成樹脂（例えばポリアセタール樹脂）の成形体により得られる。 -In / out mechanism The in / out mechanism is a side slide type in / out mechanism using a rotating cam mechanism. The retracting mechanism includes a cam portion 41 formed on the inner surface of the intermediate shaft 4, a rotating member 6 that engages with the cam portion 41 and contacts the rear end of the writing body 9, engages with the rotating member 6, and The clip body 7 protrudes radially outward from the slide hole 21 and the elastic body 8 (for example, a compression coil spring) accommodated in the shaft cylinder 2 and biases the writing body 9 backward. The retracting mechanism of the present embodiment is a double knock type in which both the pen tip protruding operation and the pen tip retracting operation slide the clip body 7 forward. The rotating member 6 is obtained by a synthetic resin (for example, polyacetal resin) molded body.

前記カム部４１は、前方に突出する鋸歯状の複数のカム歯４１ａと、該カム歯４１ａ間に形成される、前後方向に延びる複数のカム溝４１ｂとを備える。前記回転部材６は、その外面に前後方向に延びる複数本（例えば４本）の突条６１を備え、該突条６１が、カム部４１のカム歯４１ａ及びカム部４１のカム溝４１ｂと係合される。前記クリップ体７の軸部７３の前端には、回転部材６の突条６１の後端と係合するカム歯７３ａが一体に形成される。   The cam portion 41 includes a plurality of serrated cam teeth 41a protruding forward, and a plurality of cam grooves 41b formed between the cam teeth 41a and extending in the front-rear direction. The rotating member 6 includes a plurality of (for example, four) protrusions 61 extending in the front-rear direction on the outer surface thereof, and the protrusions 61 are engaged with the cam teeth 41 a of the cam portion 41 and the cam grooves 41 b of the cam portion 41. Combined. Cam teeth 73 a that engage with the rear end of the protrusion 61 of the rotating member 6 are integrally formed at the front end of the shaft portion 73 of the clip body 7.

・ペン先の出没
ペン先没入状態からクリップ体７を前方に、弾発体８による後方付勢に抗してスライド操作すると、クリップ体７の軸部７３のカム歯７３ａによって回転部材６が前方に押圧され、前記回転部材６の突条６１がカム溝４１ｂに沿って前方に移動するに伴って、前記回転部材６が筆記体９の後端を前方に押圧し、ペン先９１が前端孔３１より外部に突出される。このとき、前記軸部７３のカム歯７３ａと前記回転部材６の突条６１との当接によって回転部材６がカム部４１に対して一定角度だけ回転する。それにより、前記回転部材６の突条６１がカム部４１のカム歯４１ａに係合され、ペン先突出状態が維持される。 When the clip body 7 is slid forward from the pen tip immersion state against the rear bias by the elastic body 8, the rotating member 6 is moved forward by the cam teeth 73a of the shaft portion 73 of the clip body 7. As the ridge 61 of the rotating member 6 moves forward along the cam groove 41b, the rotating member 6 presses the rear end of the writing body 9 forward, and the nib 91 moves to the front end hole. 31 protrudes from the outside. At this time, the rotating member 6 rotates by a certain angle with respect to the cam portion 41 by the contact between the cam teeth 73 a of the shaft portion 73 and the protrusion 61 of the rotating member 6. Thereby, the protrusion 61 of the rotating member 6 is engaged with the cam teeth 41a of the cam portion 41, and the pen tip protruding state is maintained.

ペン先突出状態からクリップ体７を前方にスライド操作すると、クリップ体７の軸部７３が回転部材６を前方に押圧し、前記軸部７３のカム歯７３ａと前記回転部材６の突条６１との当接によって回転部材６がカム部４１に対して一定角度だけ回転する。それによって、前記突条６１とカム部４１のカム歯４１ａとの係合状態が解除され、弾発体８による後方付勢により、前記突条６１がカム部４１のカム溝４１ｂに沿って後方に移動する。前記回転部材６が後方に移動することに伴って、筆記体９が後方に移動し、ペン先没入状態となる。   When the clip body 7 is slid forward from the pen tip protruding state, the shaft portion 73 of the clip body 7 presses the rotating member 6 forward, and the cam teeth 73a of the shaft portion 73 and the protrusion 61 of the rotating member 6 The rotating member 6 rotates by a certain angle with respect to the cam portion 41 by the contact. Accordingly, the engagement state between the protrusion 61 and the cam teeth 41a of the cam portion 41 is released, and the protrusion 61 is rearward along the cam groove 41b of the cam portion 41 due to the rearward biasing by the elastic body 8. Move to. As the rotating member 6 moves rearward, the writing body 9 moves rearward and enters the pen tip immersion state.

前記摩擦部１０は、前記クリップ体７の前後方向の移動に連動せず、後軸５（軸筒２）の後端外面に固定される。前記摩擦部１０は、クリップ体７と独立して設けられる。   The friction portion 10 is fixed to the outer surface of the rear end of the rear shaft 5 (shaft cylinder 2) without interlocking with the movement of the clip body 7 in the front-rear direction. The friction part 10 is provided independently of the clip body 7.

・クリップ体の他の例
図９にクリップ体７の他の例を示す。
本実施の形態の図８のクリップ体７と異なる点は、カム歯７４ａを有する円筒体７４をクリップ体７の軸部７３に取り付けた点であり、他の構成及び作用効果は図１乃至図８の実施の形態と同様であるため、説明を省略する。前記円筒体７４は合成樹脂（例えばポリアセタール樹脂）の成形体により得られる。 -Other example of clip body The other example of the clip body 7 is shown in FIG.
The difference from the clip body 7 of FIG. 8 of the present embodiment is that a cylindrical body 74 having cam teeth 74a is attached to the shaft portion 73 of the clip body 7, and other configurations and operational effects are shown in FIGS. Since it is the same as that of 8 embodiment, description is abbreviate | omitted. The cylindrical body 74 is obtained from a molded body of synthetic resin (for example, polyacetal resin).

・摩擦部
本実施の形態において、前記摩擦部１０を構成する弾性材料は、弾性を有する合成樹脂（ゴム、エラストマー）が好ましく、例えば、シリコーン樹脂、ＳＢＳ樹脂（スチレン−ブタジエン−スチレン共重合体）、ＳＥＢＳ樹脂（スチレン−エチレン−ブタジエン−スチレン共重合体）、フッ素系樹脂、クロロプレン樹脂、ニトリル樹脂、ポリエステル系樹脂、エチレンプロピレンジエンゴム（ＥＰＤＭ）等が挙げられる。前記摩擦部１０を構成する弾性を有する合成樹脂は、高摩耗性の弾性材料（例えば、消しゴム等）からなるものよりも、摩擦時に摩耗カス（消しカス）が殆ど生じない低摩耗性の弾性材料からなることが好ましい。また、前記摩擦部１０は、軸筒２の後端部外面に少なくとも設ければよく、例えば、軸筒２の後端部外面もしくは後軸５の後端部外面に弾性材料よりなる摩擦部１０を圧入、係合、螺合、嵌合、接着、２色成形等によって固着する構成、または軸筒２の全体もしくは後軸５の全体が弾性材料により一体に形成される構成が挙げられる。 -Friction part In this Embodiment, the elastic material which comprises the said friction part 10 has preferable the synthetic resin (rubber, elastomer) which has elasticity, for example, a silicone resin, SBS resin (styrene-butadiene-styrene copolymer) SEBS resin (styrene-ethylene-butadiene-styrene copolymer), fluorine resin, chloroprene resin, nitrile resin, polyester resin, ethylene propylene diene rubber (EPDM), and the like. The elastic synthetic resin constituting the friction part 10 is a low-abrasion elastic material in which almost no wear debris (erasure debris) is generated during friction, compared to a high-abrasion elastic material (for example, an eraser). Preferably it consists of. The friction portion 10 may be provided at least on the outer surface of the rear end portion of the shaft tube 2. For example, the friction portion 10 made of an elastic material on the outer surface of the rear end portion of the shaft tube 2 or the outer surface of the rear end portion of the rear shaft 5. Can be fixed by press-fitting, engagement, screwing, fitting, adhesion, two-color molding, or the like, or a configuration in which the entire shaft cylinder 2 or the entire rear shaft 5 is integrally formed of an elastic material.

・熱変色性インキ
本実施の形態において、前記熱変色性インキは、可逆熱変色性インキが好ましい。前記可逆熱変色性インキは、発色状態から加熱により消色する加熱消色型、発色状態または消色状態を互変的に特定温度域で記憶保持する色彩記憶保持型、または、消色状態から加熱により発色し、発色状態からの冷却により消色状態に復する加熱発色型等、種々のタイプを単独または併用して構成することができる。 -Thermochromic ink In the present embodiment, the thermochromic ink is preferably a reversible thermochromic ink. The reversible thermochromic ink is a heat decoloring type that decolors by heating from a colored state, a color memory retaining type that reversibly stores and retains a colored state or a decolored state in a specific temperature range, or from a decolored state Various types such as a heating coloring type that develops color by heating and returns to a decolored state by cooling from the colored state can be used alone or in combination.

また、前記可逆熱変色性インキに含有される色材は、従来より公知の（イ）電子供与性呈色性有機化合物、（ロ）電子受容性化合物、及び（ハ）前記両者の呈色反応の生起温度を
決める反応媒体、の必須三成分を少なくとも含む可逆熱変色性組成物をマイクロカプセル
中に内包させた可逆熱変色性顔料が好適に用いられる。 The coloring material contained in the reversible thermochromic ink includes conventionally known (a) electron donating color-forming organic compounds, (b) electron-accepting compounds, and (c) color reactions of both. A reversible thermochromic pigment in which a reversible thermochromic composition containing at least the essential three components of a reaction medium for determining the occurrence temperature of the polymer is encapsulated in a microcapsule is preferably used.

本実施の形態では、図１０に示すように、温度変化による着色濃度の変化をプロットした曲線の形状が、温度を変色温度域より低温側から上昇させていく場合と逆に変色温度域より高温側から下降させていく場合とで異なる経路を辿って変色し、完全発色温度（ｔ１）以下の低温域での発色状態、または完全消色温度（ｔ４）以上の高温域での消色状態が、特定温度域〔ｔ２〜ｔ３の間の温度域（実質的二相保持温度域）〕で記憶保持できる色彩記憶保持型熱変色性インキが適用されることが好ましい。図１０において、ΔＨは、ヒステリシスの程度を示す温度幅（即ちヒステリシス幅）を示す。ΔＨの値が小さいと、変色前後の両状態のうち一方の状態しか存在しえない。ΔＨの値が大きいと、変色前後の各状態の保持が容易となる。   In the present embodiment, as shown in FIG. 10, the shape of the curve plotting the change in color density due to the temperature change is higher than the color change temperature range, contrary to the case where the temperature is raised from the lower temperature side than the color change temperature range. The color changes by following a different route depending on whether the color is lowered from the side, and a color development state in a low temperature region below the complete color development temperature (t1) or a color erase state in a high temperature region above the complete color removal temperature (t4) It is preferable to apply a color memory retention type thermochromic ink that can be stored and retained in a specific temperature range [temperature range between t2 and t3 (substantially two-phase retention temperature range)]. In FIG. 10, ΔH represents a temperature width (ie, hysteresis width) indicating the degree of hysteresis. When the value of ΔH is small, only one of the two states before and after the color change can exist. When the value of ΔH is large, it is easy to maintain each state before and after the color change.

本実施の形態では、前記熱変色性インキの摩擦部１０の摩擦熱による変色温度は、２５℃〜９５℃（好ましくは３６℃〜９５℃）に設定される。即ち、本実施の形態では、前記高温側変色点〔完全消色温度（ｔ４）〕を、２５℃〜９５℃（好ましくは、３６℃〜９０℃）の範囲に設定し、前記低温側変色点〔完全発色温度（ｔ１）〕を、−３０℃〜＋２０℃（好ましくは、−３０℃〜＋１０℃）の範囲に設定することが有効である。それにより、常態（日常の生活温度域）で呈する色彩の保持を有効に機能させることができるとともに、可逆熱変色性インキによる筆跡を摩擦部１０による摩擦熱で容易に変色することができる。   In the present embodiment, the color change temperature due to frictional heat of the frictional part 10 of the thermochromic ink is set to 25 ° C. to 95 ° C. (preferably 36 ° C. to 95 ° C.). That is, in this embodiment, the high temperature side discoloration point [complete decoloring temperature (t4)] is set in a range of 25 ° C. to 95 ° C. (preferably 36 ° C. to 90 ° C.), and the low temperature side discoloration point is set. It is effective to set [complete color development temperature (t1)] in the range of −30 ° C. to + 20 ° C. (preferably −30 ° C. to + 10 ° C.). Thereby, while maintaining the color exhibited in a normal state (daily life temperature range) can be effectively functioned, the handwriting by the reversible thermochromic ink can be easily changed in color by the frictional heat generated by the friction portion 10.

本実施の形態の熱変色性筆記具１は、前記摩擦部１０を軸筒２の後端外面に固定したことにより、摩擦操作時、摩擦部１０の後方への移動が阻止されるため、摩擦部１０を用いて安定した摩擦操作が可能となる。また、本実施の形態の熱変色性筆記具１は、ペン先出没の操作をするための操作部をクリップ体７に設け、摩擦部１０をクリップ体７（操作部）から独立させたことにより、ペン先９１を出没する際、クリップ体７を操作し、摩擦部１０を操作しないため、摩擦部１０が手垢等で汚れることを回避できる。また、本実施の形態の熱変色性筆記具１は、軸筒２外面にクリップ体７を設けたにもかかわらず、従来の多芯タイプのサイドスライド式の熱変色性筆記具に比べ、突出部分が少なく、外観デザイン上の自由度が増加し、スマートな外観を得ることができる。   In the thermochromic writing instrument 1 of the present embodiment, since the friction part 10 is fixed to the outer surface of the rear end of the shaft tube 2, the friction part 10 is prevented from moving backward during the friction operation. 10 enables stable friction operation. In addition, the thermochromic writing instrument 1 of the present embodiment is provided with an operation part for operating the pen tip in the clip body 7, and by making the friction part 10 independent of the clip body 7 (operation part), When the pen tip 91 appears and disappears, the clip body 7 is operated and the friction portion 10 is not operated. Therefore, it is possible to avoid the friction portion 10 from being soiled with dirt or the like. Further, the thermochromic writing instrument 1 of the present embodiment has a protruding portion compared to the conventional multi-core type side slide type thermochromic writing instrument although the clip body 7 is provided on the outer surface of the shaft tube 2. The degree of freedom in appearance design is increased, and a smart appearance can be obtained.

本実施の形態の熱変色性筆記具１は、出没機構が、回転カム機構を用いたサイドスライド式出没機構であり、ペン先突出操作及びペン先没入操作の何れもがクリップ体７を前方にスライド操作するタイプ（いわゆるダブルノック式の出没機構）であるため、操作方法が簡単であり、ユーザーが操作方法を容易に習得できる。   The thermochromic writing instrument 1 of the present embodiment is a side slide type retracting mechanism in which the retracting mechanism uses a rotating cam mechanism, and both the pen tip protruding operation and the pen tip retracting operation slide the clip body 7 forward. Since it is a type to operate (a so-called double knock type in / out mechanism), the operation method is simple and the user can easily learn the operation method.

本実施の形態の熱変色性筆記具１は、後方に開放された第１の長孔４４と前方に開放された第２の長孔５１とによりスリット孔２１を形成したことによって、前記中間軸４と前記後軸５とを連結する際（即ちスライド孔２１を形成する際）に、クリップ体７を第１の長孔４４と第２の長孔５１とに挿入でき、クリップ体７をスリット孔２１に容易に挿入することができ、クリップ体７と軸筒２との容易な挿入組立が可能となる。   In the thermochromic writing instrument 1 of the present embodiment, the intermediate shaft 4 is formed by forming the slit hole 21 with the first long hole 44 opened rearward and the second long hole 51 opened forward. The clip body 7 can be inserted into the first long hole 44 and the second long hole 51 when connecting the rear shaft 5 to the rear shaft 5 (that is, when the slide hole 21 is formed). The clip body 7 and the shaft tube 2 can be easily inserted and assembled.

本実施の形態の熱変色性筆記具１は、前記中間軸４の側壁と前記後軸５の側壁とを径方向に重なるように連結し、前記第１の長孔４４と前記第２の長孔５１とを径方向に連通させたことにより、軸筒２全体が不必要に長くなることを回避できる。   The thermochromic writing instrument 1 of the present embodiment connects the side wall of the intermediate shaft 4 and the side wall of the rear shaft 5 so as to overlap in the radial direction, and the first elongated hole 44 and the second elongated hole. By making 51 communicate with the radial direction, it is possible to prevent the entire shaft tube 2 from becoming unnecessarily long.

本実施の形態の熱変色性筆記具１は、前記摩擦部１０が弾性材料からなり、前記摩擦部１０の一部がペン先没入状態のクリップ体７に当接してなることにより、ペン先突出状態からペン先没入状態にする際、弾発体８の後方付勢により筆記体９及びクリップ体７が後方移動し、クリップ体７と弾性材料よりなる摩擦部１０とが当接するため、その際に筆記体９に加わる衝撃を緩和できる。その結果、筆記体９内のインキの逆流やペン先９１からの空気の混入を防止できる。   In the thermochromic writing instrument 1 according to the present embodiment, the friction part 10 is made of an elastic material, and a part of the friction part 10 is in contact with the clip body 7 in the pen tip immersion state, so that the pen tip protrudes. Since the writing body 9 and the clip body 7 are moved backward by the rear bias of the projectile body 8 and the clip body 7 is brought into contact with the friction portion 10 made of an elastic material. The impact applied to the cursive body 9 can be reduced. As a result, it is possible to prevent the backflow of ink in the writing body 9 and the mixing of air from the nib 91.

＜第２の実施の形態＞
図１１乃至図３５に本発明の第２の実施の形態を示す。
本実施の形態の熱変色性筆記具１は、軸筒２と、該軸筒２内に収容される筆記体９と、該筆記体９のペン先９１を軸筒２の前端孔３１より出没自在にさせる出没機構とを備える。 <Second Embodiment>
11 to 35 show a second embodiment of the present invention.
The thermochromic writing instrument 1 according to the present embodiment includes a shaft tube 2, a writing body 9 accommodated in the shaft tube 2, and a pen tip 91 of the writing body 9 that can be projected and retracted from a front end hole 31 of the shaft tube 2. And a haunting mechanism.

・筆記体
前記筆記体９は、ペン先９１と、該ペン先９１が前端開口部に圧入固着されたインキ収容管９２と、該インキ収容管９２内に充填される熱変色性インキ９３と、該熱変色性インキ９３の後端に充填され且つ該熱変色性インキ９３の消費に伴い前進する追従体９４（例えば高粘度流体）とからなる。 -Writing body The writing body 9 includes a pen tip 91, an ink storage tube 92 in which the pen tip 91 is press-fitted and fixed to the front end opening, and a thermochromic ink 93 filled in the ink storage tube 92. It comprises a follower 94 (for example, a high-viscosity fluid) that fills the rear end of the thermochromic ink 93 and moves forward as the thermochromic ink 93 is consumed.

前記ペン先９１は、例えば、前端に回転可能にボールを抱持した金属製のボールペンチップのみからなる構成、または前記ボールペンチップの後部外面を保持した合成樹脂製のペン先ホルダーからなる構成のいずれであってもよい。また、前記インキ収容管９２の後端開口部に、インキ収容管９２と外部とが通気可能な通気孔を備えた尾栓９５が取り付けられる。前記ペン先９１の内部には、前端のボールを前方に押圧するスプリングが収容される。前記スプリングは、圧縮コイルスプリングの前端部にロッド部を備えた構成であり、前記ロッド部の前端がボール後面に接触している。非筆記時、前記スプリングの前方付勢によりボールがボールペンチップ前端の内向きの前端縁部内面に密接され、ペン先９１の前端からのインキの漏出及びインキの蒸発を防止できる。   The nib 91 is composed of, for example, either a metal ballpoint pen tip having a ball rotatably held at the front end, or a synthetic resin nib holder holding the rear outer surface of the ballpoint pen tip. It may be. A tail plug 95 having a vent hole through which the ink containing tube 92 and the outside can be vented is attached to the rear end opening of the ink containing tube 92. A spring that presses the ball at the front end forward is housed inside the nib 91. The spring includes a rod portion at a front end portion of a compression coil spring, and the front end of the rod portion is in contact with the rear surface of the ball. When not writing, the ball is brought into close contact with the inner surface of the front end edge portion of the front end of the ballpoint pen tip by the forward urging of the spring, and ink leakage from the front end of the pen tip 91 and ink evaporation can be prevented.

・軸筒
前記軸筒２は、先細円筒状の前軸３と、該前軸３の後端部に連結される円筒状の中間軸４と、該中間軸４の後端部に連結される円筒状の後軸５とからなる。 Shaft cylinder The shaft cylinder 2 is connected to a tapered cylindrical front shaft 3, a cylindrical intermediate shaft 4 connected to the rear end portion of the front shaft 3, and a rear end portion of the intermediate shaft 4. It consists of a cylindrical rear shaft 5.

図１８に前軸３を示す。前記前軸３は、合成樹脂（例えば、ポリカーボネート樹脂）の成形体からなる先細円筒状の本体３ａと、該本体３ａ外面に設けられる弾性材料からなる把持部３ｂとからなる。前記把持部３ｂは、２色成形または本体３ａ外面への装着により設けられる。前記前軸３の後端部は縮径され、その外面にはオネジ部３２が形成される。前記前軸３の前端には、前端孔３１が前後方向に貫設される。   FIG. 18 shows the front shaft 3. The front shaft 3 includes a tapered cylindrical main body 3a made of a synthetic resin (for example, polycarbonate resin) molded body and a grip portion 3b made of an elastic material provided on the outer surface of the main body 3a. The grip portion 3b is provided by two-color molding or mounting on the outer surface of the main body 3a. The rear end portion of the front shaft 3 is reduced in diameter, and a male screw portion 32 is formed on the outer surface thereof. A front end hole 31 is provided in the front end of the front shaft 3 in the front-rear direction.

図１９乃至図２１に中間軸４を示す。前記中間軸４は、円筒状の合成樹脂（例えば、ポリカーボネート樹脂）の成形体からなる。前記中間軸４の前端部内面には、メネジ部４６が形成される。前記メネジ部４６に前記前軸３のオネジ部３２が螺合可能である。前記中間軸４の後端部には、縮径部４３が一体に形成される。前記中間軸４の後端部側壁には、前端が閉鎖され且つ後端が開放された、前後方向に延びる第１の長孔４４が形成される。さらに、前記縮径部４３の外面には外向突起４５が一体に形成される。前記縮径部４３よりも前方の前記中間軸４の内面には、段部４２が一体に形成される。前記段部４２より前方の前記中間軸４の内面には、カム部４１が一体に形成される。また、前記第１の長孔４４の前端は、前記段部（即ち前記カム部４１の後端）よりも僅かに前方に位置し且つカム部４１のカム歯４１ａよりも後方に位置している。また、前記第１の長孔４４より前方の中間軸４の外面には、前後方向に延びるガイド溝４８が形成される。前記ガイド溝４８に、クリップ体７の玉部７１ａが常時係合し、クリップ体７の前後方向の移動に伴って、前記クリップ体７の玉部７１ａが前記ガイド溝４８に沿って前後方向に移動可能である。前記ガイド溝４８と玉部７１ａによって、ポケット等の被挟持物が強固に挟持される。   The intermediate shaft 4 is shown in FIGS. The intermediate shaft 4 is formed of a cylindrical synthetic resin (for example, polycarbonate resin) molded body. A female thread portion 46 is formed on the inner surface of the front end portion of the intermediate shaft 4. The male screw portion 32 of the front shaft 3 can be screwed into the female screw portion 46. A reduced diameter portion 43 is integrally formed at the rear end portion of the intermediate shaft 4. A first long hole 44 extending in the front-rear direction is formed in the rear end side wall of the intermediate shaft 4, with the front end closed and the rear end open. Furthermore, outward projections 45 are integrally formed on the outer surface of the reduced diameter portion 43. A step portion 42 is integrally formed on the inner surface of the intermediate shaft 4 in front of the reduced diameter portion 43. A cam portion 41 is integrally formed on the inner surface of the intermediate shaft 4 in front of the step portion 42. Further, the front end of the first long hole 44 is positioned slightly in front of the stepped portion (that is, the rear end of the cam portion 41) and is positioned in the rear of the cam teeth 41a of the cam portion 41. . A guide groove 48 extending in the front-rear direction is formed on the outer surface of the intermediate shaft 4 in front of the first long hole 44. The ball portion 71 a of the clip body 7 is always engaged with the guide groove 48, and the ball portion 71 a of the clip body 7 moves in the front-rear direction along the guide groove 48 as the clip body 7 moves in the front-rear direction. It is movable. By the guide groove 48 and the ball portion 71a, an object to be held such as a pocket is firmly held.

図２２乃至図２５に後軸５を示す。前記後軸５は、円筒状の合成樹脂（例えば、ポリカーボネート樹脂）の成形体からなる。前記後軸５の前端部側壁には、前端が開放され且つ後端が閉鎖された、前後方向に延びる第２の長孔５１が形成される。また、前記後軸５の後端には、取付孔５２が前後方向に貫設される。前記取付孔５２に弾性材料からなる摩擦部１０が圧入嵌合される。それにより、前記後軸５の後端外面に摩擦部１０が固定される。また、前記後軸５の内面には、内向突起５３が一体に形成される。前記第２の長孔５１の幅寸法は、前記第１の長孔４４の幅寸法と等しく設定され、それにより、スライド孔２１に沿ってクリップ体７の前後方向のスムーズな移動が可能となる。   The rear shaft 5 is shown in FIGS. The rear shaft 5 is made of a molded body of a cylindrical synthetic resin (for example, polycarbonate resin). The front end side wall of the rear shaft 5 is formed with a second long hole 51 extending in the front-rear direction with the front end open and the rear end closed. A mounting hole 52 is provided in the rear end of the rear shaft 5 in the front-rear direction. The friction portion 10 made of an elastic material is press-fitted into the mounting hole 52. Thereby, the friction part 10 is fixed to the outer surface of the rear end of the rear shaft 5. An inward projection 53 is integrally formed on the inner surface of the rear shaft 5. The width dimension of the second long hole 51 is set to be equal to the width dimension of the first long hole 44, thereby enabling the clip body 7 to move smoothly in the front-rear direction along the slide hole 21. .

図２８にクリップ体７を示す。前記クリップ体７は、前後方向に延びるクリップ本体７１と、該クリップ本体７１の後部に一体に連設される基部７２と、該基部７２と一体に連設され且つ基部７２より前方に延びる軸部７３とからなる主要部７ａと、該軸部７３に取り付けられる円筒体７４とからなる。前記クリップ体７の主要部７ａは、合成樹脂（例えば、ポリカーボネート樹脂）の成形体により得られる。前記クリップ本体７１の裏面（内面）に板状の玉部７１ａが一体に突設される。   FIG. 28 shows the clip body 7. The clip body 7 includes a clip main body 71 extending in the front-rear direction, a base 72 integrally connected to a rear portion of the clip main body 71, and a shaft portion integrally connected to the base 72 and extending forward from the base 72. 73, and a cylindrical body 74 attached to the shaft portion 73. The main part 7a of the clip body 7 is obtained by a molded body of synthetic resin (for example, polycarbonate resin). A plate-like ball portion 71 a is integrally projected on the back surface (inner surface) of the clip body 71.

前記軸部７３は、大径部７３ｂと、該大径部７３ｂより前方に連設される、該該大径部７３ｂより小さい外径を有する小径部７３ｃとからなる。前記大径部７３ｂの外面には第１の外向突起７３ｄが一体に形成され、前記小径部７３ｃの外面には第２の外向突起７３ｅが一体に形成される。前記第１の外向突起７３ｄ及び第２の外向突起７３ｅは、例えば、環状突起または複数個が周状に分散された分散状突起が挙げられる。   The shaft portion 73 includes a large-diameter portion 73b and a small-diameter portion 73c connected to the front of the large-diameter portion 73b and having an outer diameter smaller than the large-diameter portion 73b. A first outward projection 73d is integrally formed on the outer surface of the large diameter portion 73b, and a second outward projection 73e is integrally formed on the outer surface of the small diameter portion 73c. Examples of the first outward protrusion 73d and the second outward protrusion 73e include an annular protrusion or a distributed protrusion in which a plurality of protrusions are circumferentially distributed.

前記クリップ体７の基部７２の外面または軸部７３の外面には、前後方向に延びるリブ７２ａが形成される。前記リブ７２ａが、中間軸４の後端部内面に形成した前後方向に延びる溝４９に係合し、前記リブ７２ａが前記溝４９に沿って前後方向に移動する。それによって、クリップ体７の周方向のぐらつきを抑えることができる。   A rib 72 a extending in the front-rear direction is formed on the outer surface of the base portion 72 of the clip body 7 or the outer surface of the shaft portion 73. The rib 72 a engages with a groove 49 extending in the front-rear direction formed on the inner surface of the rear end portion of the intermediate shaft 4, and the rib 72 a moves in the front-rear direction along the groove 49. Thereby, wobbling in the circumferential direction of the clip body 7 can be suppressed.

図２９乃至図３１に円筒体７４を示す。前記円筒体７４は、前記クリップ体７の軸部７３の外面に取り付けられる。前記円筒体７４の前端には、カム歯７４ａが形成される。前記円筒体７４の内部には、内孔が前後方向に貫通され、前記内孔の内面に内向突起７４ｂが一体に形成される。前記円筒体７４は、クリップ体７の軸部７３の外面の第１の外向突起７３ｄと乗り越え係合し、クリップ体７と円筒体７４が一体となって、前後方向に移動可能となる。前記円筒体７４の外面には、複数のガイド突起７４ｃが一体に形成され、前記ガイド突起７４ｃが、カム部４１のカム溝４１ｂに沿って前後方向に移動可能に係合し、それによって、軸筒２内での円筒体７４の回転が阻止される。前記円筒体７４は合成樹脂（例えばポリアセタール樹脂）の成形体により得られる。   A cylindrical body 74 is shown in FIGS. The cylindrical body 74 is attached to the outer surface of the shaft portion 73 of the clip body 7. Cam teeth 74 a are formed at the front end of the cylindrical body 74. Inside the cylindrical body 74, an inner hole penetrates in the front-rear direction, and an inward projection 74b is integrally formed on the inner surface of the inner hole. The cylindrical body 74 gets over and engages with the first outward projection 73d on the outer surface of the shaft portion 73 of the clip body 7, and the clip body 7 and the cylindrical body 74 are integrated and can move in the front-rear direction. A plurality of guide protrusions 74c are integrally formed on the outer surface of the cylindrical body 74, and the guide protrusions 74c are engaged with the cam groove 41b of the cam portion 41 so as to be movable in the front-rear direction. The rotation of the cylindrical body 74 in the cylinder 2 is prevented. The cylindrical body 74 is obtained from a molded body of synthetic resin (for example, polyacetal resin).

図３２乃至図３３に回転部材６を示す。
前記回転部材６は、その外面に前後方向に延びる複数本（例えば４本）の突条６１を備え、該突条６１が、カム部４１のカム歯４１ａ及びカム部４１のカム溝４１ｂと係合される。前記回転部材６の内部には前後方向に貫通する内孔が形成される。前記回転部材６の内孔の内面には内向突起６２が形成される。前記回転部材６は合成樹脂（例えばポリアセタール樹脂）の成形体により得られる。 32 to 33 show the rotating member 6.
The rotating member 6 includes a plurality of (for example, four) protrusions 61 extending in the front-rear direction on the outer surface thereof, and the protrusions 61 are engaged with the cam teeth 41 a of the cam portion 41 and the cam grooves 41 b of the cam portion 41. Combined. An inner hole penetrating in the front-rear direction is formed in the rotating member 6. An inward projection 62 is formed on the inner surface of the inner hole of the rotating member 6. The rotating member 6 is obtained by a synthetic resin (for example, polyacetal resin) molded body.

図３５に、ペン先突出状態におけるクリップ体７と回転部材６との係合状態を示す。前記回転部材６の内向突起６２が、クリップ体７の第２の外向突起７３ｅと乗り越え係合する。それにより、クリップ体７と回転部材６の抜け止めがなされる。また、前記回転部材６が前後方向のあそびを有するとともに、回転可能に取り付けられる。前記前後方向のあそび（移動可能量）は、回転部材６の突条６１とカム部４１のカム歯４１ａとの係脱が可能な程度の小さい寸法に設定される。   FIG. 35 shows an engaged state between the clip body 7 and the rotating member 6 in the pen tip protruding state. The inward protrusion 62 of the rotating member 6 gets over and engages with the second outward protrusion 73e of the clip body 7. Thereby, the clip body 7 and the rotating member 6 are prevented from coming off. The rotating member 6 has play in the front-rear direction and is rotatably attached. The play in the front-rear direction (movable amount) is set to such a small dimension as to enable engagement / disengagement between the protrusion 61 of the rotating member 6 and the cam teeth 41a of the cam portion 41.

・クリップ体の組立
前記クリップ体７の組立について説明する。
前記中間軸４の第１の長孔４４の後端開放部より、該第１の長孔４４内にクリップ体７の基部７２を挿入するとともに、クリップ体７の筒状の軸部７３を中間軸４内に挿入する。その後、中間軸４の第１の長孔４４と後軸５の第２の長孔５１とを径方向に連通させるように（径方向に重なるように）、前記後軸５の内面を前記中間軸４の縮径部４３の外面に嵌合させるとともに、クリップ体７の基部７２を、第２の長孔５１の前端開放部より、該第２の長孔５１内に挿入する。それにより、前記中間軸４と前記後軸５とが連結され、前記第１の長孔４４と第２の長孔５１とにより、前後方向に延びるスライド孔２１が形成されるとともに、前記スライド孔２１より径方向外方にクリップ体７（クリップ本体７１及び基部７２の一部）が突出され、前記クリップ体７がスライド孔２１に沿って前後方向にスライド可能（前後方向に摺動可能）に構成される。尚、このとき、前記中間軸４の縮径部４３外面の外向突起４５と後軸５の内面の内向突起５３が乗り越え係合される。 -Assembly of a clip body The assembly of the said clip body 7 is demonstrated.
The base 72 of the clip body 7 is inserted into the first long hole 44 from the rear end opening portion of the first long hole 44 of the intermediate shaft 4, and the cylindrical shaft portion 73 of the clip body 7 is placed in the middle. Insert into the shaft 4. Thereafter, the inner surface of the rear shaft 5 is connected to the middle so that the first long hole 44 of the intermediate shaft 4 and the second long hole 51 of the rear shaft 5 communicate with each other in the radial direction (so as to overlap in the radial direction). The base portion 72 of the clip body 7 is inserted into the second long hole 51 from the front end opening portion of the second long hole 51 while being fitted to the outer surface of the reduced diameter portion 43 of the shaft 4. Thereby, the intermediate shaft 4 and the rear shaft 5 are connected to each other, and the first long hole 44 and the second long hole 51 form a slide hole 21 extending in the front-rear direction, and the slide hole The clip body 7 (a part of the clip main body 71 and the base 72) protrudes radially outward from 21 and can be slid in the front-rear direction along the slide hole 21 (slidable in the front-rear direction). Composed. At this time, the outward projection 45 on the outer surface of the reduced diameter portion 43 of the intermediate shaft 4 and the inward projection 53 on the inner surface of the rear shaft 5 get over and engage.

前記摩擦部１０が固定された後軸５を中間軸４の後端部に連結することによって、前記摩擦部１０が軸筒２の後端に常時固定される。また、前軸３と中間軸４とが螺合により着脱自在に連結され、それにより、筆記体９を交換可能にできる。   By connecting the rear shaft 5 to which the friction portion 10 is fixed to the rear end portion of the intermediate shaft 4, the friction portion 10 is always fixed to the rear end of the shaft tube 2. Further, the front shaft 3 and the intermediate shaft 4 are detachably connected by screwing, whereby the writing body 9 can be exchanged.

・出没機構
前記出没機構は、回転カム機構を用いたサイドスライド式出没機構である。前記出没機構は、中間軸４内面に形成されたカム部４１と、該カム部４１に係合し且つ筆記体９の後端に当接する回転部材６と、該回転部材６に係合し且つスライド孔２１より径方向外方に突出するクリップ体７と、軸筒２内に収容され且つ筆記体９を後方に付勢する弾発体８（例えば圧縮コイルスプリング）とからなる。本実施の形態の出没機構は、ペン先突出操作及びペン先没入操作のいずれもがクリップ体７を前方にスライド操作するダブルノック式である。 -In / out mechanism The in / out mechanism is a side slide type in / out mechanism using a rotating cam mechanism. The retracting mechanism includes a cam portion 41 formed on the inner surface of the intermediate shaft 4, a rotating member 6 that engages with the cam portion 41 and contacts the rear end of the writing body 9, engages with the rotating member 6, and The clip body 7 protrudes radially outward from the slide hole 21 and the elastic body 8 (for example, a compression coil spring) accommodated in the shaft cylinder 2 and biases the writing body 9 backward. The retracting mechanism of the present embodiment is a double knock type in which both the pen tip protruding operation and the pen tip retracting operation slide the clip body 7 forward.

前記カム部４１は、前方に突出する鋸歯状の複数のカム歯４１ａと、該カム歯４１ａ間に形成される、前後方向に延びる複数のカム溝４１ｂとを備える。前記回転部材６は、その外面に長手方向に延びる複数本（例えば４本）の突条６１を備え、該突条６１が、カム部４１のカム歯４１ａ及びカム部４１のカム溝４１ｂと係合される。前記クリップ体７の軸部７３に取り付けられた円筒体７４の前端には、回転部材６の突条６１の後端と係合するカム歯７４ａが一体に形成される。   The cam portion 41 includes a plurality of serrated cam teeth 41a protruding forward, and a plurality of cam grooves 41b formed between the cam teeth 41a and extending in the front-rear direction. The rotating member 6 includes a plurality of (for example, four) protrusions 61 extending in the longitudinal direction on the outer surface thereof, and the protrusions 61 are engaged with the cam teeth 41 a of the cam portion 41 and the cam grooves 41 b of the cam portion 41. Combined. Cam teeth 74 a that engage with the rear end of the protrusion 61 of the rotating member 6 are integrally formed at the front end of the cylindrical body 74 attached to the shaft portion 73 of the clip body 7.

・ペン先の出没
ペン先没入状態からクリップ体７を前方に、弾発体８による後方付勢に抗してスライド操作すると、クリップ体７の軸部７３に取り付けられた円筒体７４によって回転部材６が前方に押圧され、前記回転部材６の突条６１がカム溝４１ｂに沿って前方に移動するに伴って、前記回転部材６が筆記体９の後端を前方に押圧し、ペン先９１が前端孔３１より外部に突出される。このとき、前記軸部７３に取り付けられた円筒体７４のカム歯７４ａと前記回転部材６の突条６１との当接によって回転部材６がカム部４１に対して一定角度だけ回転する。それにより、前記回転部材６の突条６１がカム部４１のカム歯４１ａに係合され、ペン先突出状態が維持される。 When the clip body 7 is slid forward from the pen tip immersion state against the rear bias by the bullet 8, the rotating member is moved by the cylindrical body 74 attached to the shaft portion 73 of the clip body 7. 6 is pressed forward, and as the protrusion 61 of the rotating member 6 moves forward along the cam groove 41b, the rotating member 6 presses the rear end of the writing body 9 forward, and the nib 91 Protrudes to the outside from the front end hole 31. At this time, the rotating member 6 rotates by a certain angle with respect to the cam portion 41 by contact between the cam teeth 74 a of the cylindrical body 74 attached to the shaft portion 73 and the protrusion 61 of the rotating member 6. Thereby, the protrusion 61 of the rotating member 6 is engaged with the cam teeth 41a of the cam portion 41, and the pen tip protruding state is maintained.

ペン先突出状態からクリップ体７を前方にスライド操作すると、クリップ体７の軸部７３に取り付けられた円筒体７４が回転部材６を前方に押圧し、前記円筒体７４のカム歯７４ａと前記回転部材６の突条６１との当接によって回転部材６がカム部４１に対して一定角度だけ回転する。それによって、前記突条６１とカム部４１のカム歯４１ａとの係合状態が解除され、弾発体８による後方付勢により、前記突条６１がカム部４１のカム溝４１ｂに沿って後方に移動する。前記回転部材６が後方に移動することに伴って、筆記体９が後方に移動し、ペン先没入状態となる。   When the clip body 7 is slid forward from the pen tip protruding state, the cylindrical body 74 attached to the shaft portion 73 of the clip body 7 presses the rotating member 6 forward, and the cam teeth 74a of the cylindrical body 74 and the rotation The rotating member 6 rotates by a certain angle with respect to the cam portion 41 by the contact of the member 6 with the protrusion 61. Accordingly, the engagement state between the protrusion 61 and the cam teeth 41a of the cam portion 41 is released, and the protrusion 61 is rearward along the cam groove 41b of the cam portion 41 due to the rearward biasing by the elastic body 8. Move to. As the rotating member 6 moves rearward, the writing body 9 moves rearward and enters the pen tip immersion state.

・摩擦部
本実施の形態において、前記摩擦部１０を構成する弾性材料は、弾性を有する合成樹脂（ゴム、エラストマー）が好ましく、例えば、シリコーン樹脂、ＳＢＳ樹脂（スチレン−ブタジエン−スチレン共重合体）、ＳＥＢＳ樹脂（スチレン−エチレン−ブタジエン−スチレン共重合体）、フッ素系樹脂、クロロプレン樹脂、ニトリル樹脂、ポリエステル系樹脂、エチレンプロピレンジエンゴム（ＥＰＤＭ）等が挙げられる。前記摩擦部１０を構成する弾性を有する合成樹脂は、高摩耗性の弾性材料（例えば、消しゴム等）からなるものよりも、摩擦時に摩耗カス（消しカス）が殆ど生じない低摩耗性の弾性材料からなることが好ましい。また、前記摩擦部１０は、軸筒２の後端部外面に少なくとも設ければよく、例えば、軸筒２の後端部もしくは後軸５の後端部に弾性材料よりなる摩擦部１０を圧入、係合、螺合、嵌合、接着、２色成形等によって固着する構成、または軸筒２の全体もしくは後軸５の全体が弾性材料により一体に形成される構成が挙げられる。 -Friction part In this Embodiment, the elastic material which comprises the said friction part 10 has preferable the synthetic resin (rubber, elastomer) which has elasticity, for example, a silicone resin, SBS resin (styrene-butadiene-styrene copolymer) SEBS resin (styrene-ethylene-butadiene-styrene copolymer), fluorine resin, chloroprene resin, nitrile resin, polyester resin, ethylene propylene diene rubber (EPDM), and the like. The elastic synthetic resin constituting the friction part 10 is a low-abrasion elastic material in which almost no wear debris (erasure debris) is generated during friction, compared to a high-abrasion elastic material (for example, an eraser). Preferably it consists of. The friction portion 10 may be provided at least on the outer surface of the rear end portion of the shaft tube 2. For example, the friction portion 10 made of an elastic material is press-fitted into the rear end portion of the shaft tube 2 or the rear end portion of the rear shaft 5. , Engagement, screwing, fitting, bonding, two-color molding, or the like, or a configuration in which the entire shaft cylinder 2 or the entire rear shaft 5 is integrally formed of an elastic material.

・熱変色性インキ
本実施の形態において、前記熱変色性インキは、可逆熱変色性インキが好ましい。前記可逆熱変色性インキは、発色状態から加熱により消色する加熱消色型、発色状態または消色状態を互変的に特定温度域で記憶保持する色彩記憶保持型、または、消色状態から加熱により発色し、発色状態からの冷却により消色状態に復する加熱発色型等、種々のタイプを単独または併用して構成することができる。 -Thermochromic ink In the present embodiment, the thermochromic ink is preferably a reversible thermochromic ink. The reversible thermochromic ink is a heat decoloring type that decolors by heating from a colored state, a color memory retaining type that reversibly stores and retains a colored state or a decolored state in a specific temperature range, or from a decolored state Various types such as a heating coloring type that develops color by heating and returns to a decolored state by cooling from the colored state can be used alone or in combination.

また、前記可逆熱変色性インキに含有される色材は、従来より公知の（イ）電子供与性呈色性有機化合物、（ロ）電子受容性化合物、及び（ハ）前記両者の呈色反応の生起温度を決める反応媒体、の必須三成分を少なくとも含む可逆熱変色性組成物をマイクロカプセル中に内包させた可逆熱変色性顔料が好適に用いられる。   The coloring material contained in the reversible thermochromic ink includes conventionally known (a) electron donating color-forming organic compounds, (b) electron-accepting compounds, and (c) color reactions of both. A reversible thermochromic pigment in which a reversible thermochromic composition containing at least the essential three components of a reaction medium for determining the occurrence temperature of the polymer is encapsulated in a microcapsule is preferably used.

本実施の形態では、図１０に示すように、温度変化による着色濃度の変化をプロットした曲線の形状が、温度を変色温度域より低温側から上昇させていく場合と逆に変色温度域より高温側から下降させていく場合とで異なる経路を辿って変色し、完全発色温度（ｔ１）以下の低温域での発色状態、または完全消色温度（ｔ４）以上の高温域での消色状態が、特定温度域〔ｔ２〜ｔ３の間の温度域（実質的二相保持温度域）〕で記憶保持できる色彩記憶保持型熱変色性インキが適用されることが好ましい。図１０において、ΔＨは、ヒステリシスの程度を示す温度幅（即ちヒステリシス幅）を示す。ΔＨの値が小さいと、変色前後の両状態のうち一方の状態しか存在しえない。ΔＨの値が大きいと、変色前後の各状態の保持が容易となる。   In the present embodiment, as shown in FIG. 10, the shape of the curve plotting the change in color density due to the temperature change is higher than the color change temperature range, contrary to the case where the temperature is raised from the lower temperature side than the color change temperature range. The color changes by following a different route depending on whether the color is lowered from the side, and a color development state in a low temperature region below the complete color development temperature (t1) or a color erase state in a high temperature region above the complete color removal temperature (t4) It is preferable to apply a color memory retention type thermochromic ink that can be stored and retained in a specific temperature range [temperature range between t2 and t3 (substantially two-phase retention temperature range)]. In FIG. 10, ΔH represents a temperature width (ie, hysteresis width) indicating the degree of hysteresis. When the value of ΔH is small, only one of the two states before and after the color change can exist. When the value of ΔH is large, it is easy to maintain each state before and after the color change.

本実施の形態では、前記熱変色性インキの摩擦部１０の摩擦熱による変色温度は、２５℃〜９５℃（好ましくは３６℃〜９５℃）に設定される。即ち、本実施の形態では、前記高温側変色点〔完全消色温度（ｔ４）〕を、２５℃〜９５℃（好ましくは、３６℃〜９０℃）の範囲に設定し、前記低温側変色点〔完全発色温度（ｔ１）〕を、−３０℃〜＋２０℃（好ましくは、−３０℃〜＋１０℃）の範囲に設定することが有効である。それにより、常態（日常の生活温度域）で呈する色彩の保持を有効に機能させることができるとともに、可逆熱変色性インキによる筆跡を摩擦部１０による摩擦熱で容易に変色することができる。   In the present embodiment, the color change temperature due to frictional heat of the frictional part 10 of the thermochromic ink is set to 25 ° C. to 95 ° C. (preferably 36 ° C. to 95 ° C.). That is, in this embodiment, the high temperature side discoloration point [complete decoloring temperature (t4)] is set in a range of 25 ° C. to 95 ° C. (preferably 36 ° C. to 90 ° C.), and the low temperature side discoloration point is set. It is effective to set [complete color development temperature (t1)] in the range of −30 ° C. to + 20 ° C. (preferably −30 ° C. to + 10 ° C.). Thereby, while maintaining the color exhibited in a normal state (daily life temperature range) can be effectively functioned, the handwriting by the reversible thermochromic ink can be easily changed in color by the frictional heat generated by the friction portion 10.

本実施の形態の熱変色性筆記具１は、前記摩擦部１０を軸筒２の後端外面に固定したことにより、摩擦操作時、摩擦部１０の後方への移動が阻止されるため、摩擦部１０を用いて安定した摩擦操作が可能となる。また、本実施の形態の熱変色性筆記具１は、ペン先出没の操作をするための操作部をクリップ体７に設け、摩擦部１０をクリップ体７（操作部）から独立させたことにより、ペン先９１を出没する際、クリップ体７を操作し、摩擦部１０を操作しないため、摩擦部１０が手垢等で汚れることを回避できる。また、本実施の形態の熱変色性筆記具１は、軸筒２外面にクリップ体７を設けたにもかかわらず、従来の多芯タイプのサイドスライド式の熱変色性筆記具に比べ、突出部分が少なく、外観デザイン上の自由度が増加し、スマートな外観を得ることができる。   In the thermochromic writing instrument 1 of the present embodiment, since the friction part 10 is fixed to the outer surface of the rear end of the shaft tube 2, the friction part 10 is prevented from moving backward during the friction operation. 10 enables stable friction operation. In addition, the thermochromic writing instrument 1 of the present embodiment is provided with an operation part for operating the pen tip in the clip body 7, and by making the friction part 10 independent of the clip body 7 (operation part), When the pen tip 91 appears and disappears, the clip body 7 is operated and the friction portion 10 is not operated. Therefore, it is possible to avoid the friction portion 10 from being soiled with dirt or the like. Further, the thermochromic writing instrument 1 of the present embodiment has a protruding portion compared to the conventional multi-core type side slide type thermochromic writing instrument although the clip body 7 is provided on the outer surface of the shaft tube 2. The degree of freedom in appearance design is increased, and a smart appearance can be obtained.

本実施の形態の熱変色性筆記具１は、出没機構が、回転カム機構を用いたサイドスライド式出没機構であり、ペン先突出操作及びペン先没入操作の何れもがクリップ体７を前方にスライド操作するタイプ（いわゆるダブルノック式の出没機構）であるため、操作方法が簡単であり、ユーザーが操作方法を容易に習得できる。   The thermochromic writing instrument 1 of the present embodiment is a side slide type retracting mechanism in which the retracting mechanism uses a rotating cam mechanism, and both the pen tip protruding operation and the pen tip retracting operation slide the clip body 7 forward. Since it is a type to operate (a so-called double knock type in / out mechanism), the operation method is simple and the user can easily learn the operation method.

本実施の形態の熱変色性筆記具１は、後方に開放された第１の長孔４４と前方に開放された第２の長孔５１とによりスリット孔２１を形成したことによって、前記中間軸４と前記後軸５とを連結する際（即ちスライド孔２１を形成する際）に、クリップ体７を第１の長孔４４と第２の長孔５１とに挿入でき、クリップ体７をスリット孔２１に容易に挿入することができ、クリップ体７と軸筒２との容易な挿入組立が可能となる。   In the thermochromic writing instrument 1 of the present embodiment, the intermediate shaft 4 is formed by forming the slit hole 21 with the first long hole 44 opened rearward and the second long hole 51 opened forward. The clip body 7 can be inserted into the first long hole 44 and the second long hole 51 when connecting the rear shaft 5 to the rear shaft 5 (that is, when the slide hole 21 is formed). The clip body 7 and the shaft tube 2 can be easily inserted and assembled.

本実施の形態の熱変色性筆記具１は、前記中間軸４の側壁と前記後軸５の側壁とを径方向に重なるように連結し、前記第１の長孔４４と前記第２の長孔５１とを径方向に連通させたことにより、軸筒２全体が不必要に長くなることを回避できる。   The thermochromic writing instrument 1 of the present embodiment connects the side wall of the intermediate shaft 4 and the side wall of the rear shaft 5 so as to overlap in the radial direction, and the first elongated hole 44 and the second elongated hole. By making 51 communicate with the radial direction, it is possible to prevent the entire shaft tube 2 from becoming unnecessarily long.

本実施の形態の熱変色性筆記具１は、前記クリップ体７が、前記軸筒２内に収容され且つ前後方向に延びる軸部７３を有し、前記軸部７３と前記回転部材６とが、互いに回転可能且つ互いに前後方向のあそびを有した状態で前後方向に係止されることにより、ペン先突出状態において、クリップ体７の不用意な前後方向の移動が抑えられる。その結果、ペン先突出状態でクリップ体７の近傍を把持しても、安定した摩擦操作が可能となる。   In the thermochromic writing instrument 1 of the present embodiment, the clip body 7 has a shaft portion 73 that is accommodated in the shaft tube 2 and extends in the front-rear direction, and the shaft portion 73 and the rotating member 6 are By being locked in the front-rear direction while being able to rotate relative to each other and having play in the front-rear direction, inadvertent movement of the clip body 7 in the front-rear direction can be suppressed in the pen tip protruding state. As a result, even if the vicinity of the clip body 7 is gripped with the pen tip protruding, a stable friction operation can be performed.

本実施の形態の熱変色性筆記具１は、前記スライド孔２１より前方の前記軸筒２の外面に、前後方向に延びるガイド溝４８を形成し、前記クリップ体７の前部内面に玉部７１ａを突設し、前記クリップ体７の前後方向の移動に伴って前記ガイド溝４８内を前記玉部７１ａが前後方向に摺動することにより、クリップの挟持性能が向上するとともにクリップ体７の横方向（周方向）のぐらつきを防止できる。   In the thermochromic writing instrument 1 of the present embodiment, a guide groove 48 extending in the front-rear direction is formed on the outer surface of the shaft cylinder 2 in front of the slide hole 21, and a ball portion 71 a is formed on the inner surface of the front portion of the clip body 7. And the ball 71a slides in the front-rear direction in the guide groove 48 as the clip body 7 moves in the front-rear direction, thereby improving the clip clamping performance and the side of the clip body 7 The wobbling of the direction (circumferential direction) can be prevented.

本実施の形態の熱変色性筆記具１において、前記摩擦部１０が弾性材料からなり、前記摩擦部１０の一部がペン先没入状態のクリップ体７に当接させることもできる。それにより、ペン先突出状態からペン先没入状態にする際、弾発体８の後方付勢により筆記体９及びクリップ体７が後方移動し、クリップ体７と弾性材料よりなる摩擦部１０とが当接するため、その際に筆記体９に加わる衝撃を緩和できる。その結果、筆記体９内のインキの逆流等やペン先９１からの空気の混入を防止できる。   In the thermochromic writing instrument 1 of the present embodiment, the friction portion 10 can be made of an elastic material, and a part of the friction portion 10 can be brought into contact with the clip body 7 in the pen tip immersion state. Thereby, when changing from the pen tip protruding state to the pen tip immersing state, the writing body 9 and the clip body 7 are moved backward by the rear urging of the elastic body 8, and the clip body 7 and the friction portion 10 made of an elastic material are brought into contact. Since it abuts, the impact applied to the cursive body 9 can be reduced. As a result, it is possible to prevent backflow of ink in the writing body 9 and air from the nib 91.

１ 熱変色性筆記具（筆記具）
２ 軸筒
２１ スライド孔
３ 前軸
３１ 前端孔
３２ オネジ部
３ａ 本体
３ｂ 把持部
４ 中間軸
４１ カム部
４１ａ カム歯
４１ｂ カム溝
４２ 段部
４３ 縮径部
４４ 第１の長孔
４５ 外向突起
４６ メネジ部
４７ 係止突起
４８ ガイド溝
４９ 溝
５ 後軸
５１ 第２の長孔
５２ 取付孔
５３ 内向突起
６ 回転部材
６１ 突条
６２ 内向突起
７ クリップ体（操作体）
７１ クリップ本体
７１ａ 玉部
７２ 基部
７２ａ リブ
７３ 軸部
７３ａ カム歯
７３ｂ 大径部
７３ｃ 小径部
７３ｄ 第１の外向突起
７３ｅ 第２の外向突起
７４ 円筒体
７４ａ カム歯
７４ｂ 内向突起
７４ｃ ガイド突起
７ａ 主要部
８ 弾発体
９ 筆記体
９１ ペン先
９２ インキ収容管
９３ 熱変色性インキ
９４ 追従体
９５ 尾栓
１０ 摩擦部 1 Thermochromic writing instrument (writing instrument)
2 Shaft cylinder 21 Slide hole 3 Front shaft 31 Front end hole 32 Male thread portion 3a Main body 3b Holding portion 4 Intermediate shaft 41 Cam portion 41a Cam tooth 41b Cam groove 42 Step portion 43 Reduced diameter portion 44 First long hole 45 Outward protrusion 46 Female screw Portion 47 Locking projection 48 Guide groove 49 Groove 5 Rear shaft 51 Second long hole 52 Mounting hole 53 Inward projection 6 Rotating member 61 Projection 62 Inward projection 7 Clip body (operation body)
71 clip body 71a ball 72 base 72a rib 73 shaft 73a cam teeth 73b large diameter 73c small diameter 73d first outward projection 73e second outward projection 74 cylindrical body 74a cam teeth 74b inward projection 74c guide projection 7a main part 8 bullet body 9 cursive body 91 nib 92 ink receiving tube 93 thermochromic ink 94 follower 95 tail plug 10 friction part

Claims (4)

筆記体を軸筒内に収容し、前記軸筒に設けた操作体を操作して前記筆記体を前後方向に移動させ、前記筆記体のペン先を筆記具の先端から出没可能に構成した筆記具であって、
前記軸筒の側壁に設けた前後方向に延びるスライド孔と、前記スライド孔に配設した前記操作体を前方へスライド操作することで、前記筆記体のペン先を没入状態から突出状態にする出没機構とを有し、
前記出没機構として、円周方向に沿って交互に配置された前後方向に延びる複数のカム歯及びカム溝と、前記筆記体の後方に回転可能に配置され、前記カム歯又は前記カム溝に交互に係合可能な複数の突条を有する回転部材と、前記操作体に設けられ、前記回転部材を回動させる複数の他のカム歯と、前記筆記体を後方に付勢する弾発体と、を前記軸筒内に備え、
前記操作体には、前記軸筒内に収容され且つ前後方向に延びる軸部を設け、前記軸部と前記回転部材とが、前後方向のあそびを有する状態で互いに係止され、
前記弾発体の付勢力に抗して、前記操作体を前方へスライド操作することにより、前記突条を、前記カム歯又は前記カム溝に交互に前後方向の異なる位置で係合させ、前記筆記体のペン先を交互に突出状態又は没入状態にすることを特徴とする筆記具。 A writing instrument configured to accommodate a writing body in a shaft tube, operate the operating body provided on the shaft tube to move the writing body in the front-rear direction, and to allow the pen tip of the writing body to protrude from the tip of the writing tool. There,
A slide hole provided in the side wall of the shaft cylinder extending in the front-rear direction, and the operation body disposed in the slide hole is slid forward to bring the pen tip of the writing body into a protruding state from an immersive state. A mechanism,
As the retracting mechanism, a plurality of cam teeth and cam grooves extending in the front-rear direction alternately arranged along the circumferential direction, and rotatably arranged behind the writing body, the cam teeth or the cam grooves are alternately arranged. A rotating member having a plurality of protrusions that can be engaged with each other, a plurality of other cam teeth that are provided on the operating body and rotate the rotating member, and a resilient body that urges the writing body backward. In the shaft tube,
The operating body is provided with a shaft portion accommodated in the shaft cylinder and extending in the front-rear direction, and the shaft portion and the rotating member are locked to each other in a state having play in the front-rear direction,
By sliding the operating body forward against the urging force of the projectile, the ridges are alternately engaged with the cam teeth or the cam grooves at different positions in the front-rear direction, A writing instrument, wherein the pen tip of the cursive body is alternately in a protruding state or an immersive state. 前記軸筒が互いに連結可能な複数の部品からなり、前記軸筒を構成する二つの前記部品の各側壁に、前方又は後方が開放され且つ前後方向に延びる第１又は第２の長孔をそれぞれ設け、二つの前記部品を連結したときに、前記第１及び第２の長孔が、互いに連通して前記スライド孔を形成する請求項１記載の筆記具。   The shaft cylinder is composed of a plurality of parts that can be connected to each other, and the first or second elongated hole that opens in the front or rear and extends in the front-rear direction is formed in each side wall of the two parts constituting the shaft cylinder 2. The writing instrument according to claim 1, wherein when the two parts are connected, the first and second elongated holes communicate with each other to form the slide hole. 前記軸筒を構成する二つの前記部品の各側壁を、互いに径方向に重なるように連結し、前記第１及び第２の長孔が、互いに径方向に重なった状態で連通して前記スライド孔を形成する請求項２記載の筆記具。   The side walls of the two parts constituting the shaft cylinder are connected to each other so as to overlap each other in the radial direction, and the first and second elongated holes communicate with each other in a state where they overlap each other in the radial direction. The writing instrument according to claim 2, wherein: 前記操作体をクリップ体とした請求項１乃至３の何れか１項に記載の筆記具。   The writing instrument according to any one of claims 1 to 3, wherein the operation body is a clip body.
JP2010145649A 2010-02-03 2010-06-25 Writing instrument Active JP5813929B2 (en)

Priority Applications (38)

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JP2010145649A JP5813929B2 (en) 2010-02-03 2010-06-25 Writing instrument
PL17155130T PL3184320T3 (en) 2010-02-03 2011-01-31 Writing instrument
TW104115853A TWI614148B (en) 2010-02-03 2011-01-31 Thermochromic writing pen and writing instrument
CN201180008420.9A CN102741061B (en) 2010-02-03 2011-01-31 Pen
CN201510013376.0A CN104691157B (en) 2010-02-03 2011-01-31 Pen
SG10201503145QA SG10201503145QA (en) 2010-02-03 2011-01-31 Writing instrument
ES17155130T ES2825824T3 (en) 2010-02-03 2011-01-31 Writing instrument
US13/576,826 US9108456B2 (en) 2010-02-03 2011-01-31 Writing instrument
PL13183586.0T PL2676805T3 (en) 2010-02-03 2011-01-31 Writing tool
SG2012056974A SG182835A1 (en) 2010-02-03 2011-01-31 Writing tool
CN201510587925.5A CN105128559A (en) 2010-02-03 2011-01-31 Pen
EP17155130.2A EP3184320B1 (en) 2010-02-03 2011-01-31 Writing instrument
PL11739705T PL2532531T3 (en) 2010-02-03 2011-01-31 Writing tool
CA2788724A CA2788724C (en) 2010-02-03 2011-01-31 Writing instrument
KR1020197021099A KR102098571B1 (en) 2010-02-03 2011-01-31 Writing tool
PCT/JP2011/051905 WO2011096357A1 (en) 2010-02-03 2011-01-31 Writing tool
EP11739705.9A EP2532531B1 (en) 2010-02-03 2011-01-31 Writing tool
SG10201900934WA SG10201900934WA (en) 2010-02-03 2011-01-31 Writing instrument
ES13183586.0T ES2587078T3 (en) 2010-02-03 2011-01-31 Writing instrument
EP13183588.6A EP2676804B1 (en) 2010-02-03 2011-01-31 Thermochromic writing instrument
CN201410392571.4A CN104191862B (en) 2010-02-03 2011-01-31 Pen
EP13183586.0A EP2676805B1 (en) 2010-02-03 2011-01-31 Writing tool
KR1020187025804A KR102004110B1 (en) 2010-02-03 2011-01-31 Writing tool
TW100103655A TWI522248B (en) 2010-02-03 2011-01-31 Hot discoloration writing pen and writing pen
KR1020127020210A KR101779233B1 (en) 2010-02-03 2011-01-31 Writing tool
KR1020177025257A KR101898408B1 (en) 2010-02-03 2011-01-31 Writing tool
KR1020217008884A KR102319864B1 (en) 2010-02-03 2011-01-31 Writing tool
KR1020207007322A KR102234299B1 (en) 2010-02-03 2011-01-31 Writing tool
ES11739705T ES2862911T3 (en) 2010-02-03 2011-01-31 Writing tool
HK15103454.6A HK1203459A1 (en) 2010-02-03 2013-04-10 Writing tool
HK16104618.6A HK1216733A1 (en) 2010-02-03 2013-04-10 Writing tool
HK15109193.9A HK1208410A1 (en) 2010-02-03 2013-04-10 Writing tool
HK13104326.2A HK1176912A1 (en) 2010-02-03 2013-04-10 Writing tool
HK14104024.6A HK1190674A1 (en) 2010-02-03 2014-04-28 Writing tool
US14/794,929 US9844973B2 (en) 2010-02-03 2015-07-09 Writing instrument
US15/830,456 US10493791B2 (en) 2010-02-03 2017-12-04 Writing instrument
US16/658,433 US11179963B2 (en) 2010-02-03 2019-10-21 Writing instrument
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JP2013248807A (en) * 2012-05-31 2013-12-12 Mitsubishi Pencil Co Ltd Knock type writing instrument
JP2014128912A (en) * 2012-12-28 2014-07-10 Pilot Corporation Thermochromic writing instrument
CN113306330A (en) * 2021-06-02 2021-08-27 杭州简弈科技有限公司 Precise reset machine core

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JP2013248807A (en) * 2012-05-31 2013-12-12 Mitsubishi Pencil Co Ltd Knock type writing instrument
JP2014128912A (en) * 2012-12-28 2014-07-10 Pilot Corporation Thermochromic writing instrument
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CN113306330B (en) * 2021-06-02 2023-11-10 温州市简系文具有限公司 Precise reset movement

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