JP2016087864A - Thermochromic writing instrument - Google Patents

Thermochromic writing instrument Download PDF

Info

Publication number
JP2016087864A
JP2016087864A JP2014222508A JP2014222508A JP2016087864A JP 2016087864 A JP2016087864 A JP 2016087864A JP 2014222508 A JP2014222508 A JP 2014222508A JP 2014222508 A JP2014222508 A JP 2014222508A JP 2016087864 A JP2016087864 A JP 2016087864A
Authority
JP
Japan
Prior art keywords
friction member
friction
rear end
writing instrument
shaft tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2014222508A
Other languages
Japanese (ja)
Other versions
JP6419531B2 (en
Inventor
栗田　哲宏
Tetsuhiro Kurita
哲宏 栗田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pilot Corp
Original Assignee
Pilot Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pilot Corp filed Critical Pilot Corp
Priority to JP2014222508A priority Critical patent/JP6419531B2/en
Publication of JP2016087864A publication Critical patent/JP2016087864A/en
Application granted granted Critical
Publication of JP6419531B2 publication Critical patent/JP6419531B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a thermochromic writing instrument 1 capable of suppressing deformation and swinging of a friction member 9 formed of an elastic material and provided on a knock body, during friction time, and suppressing an operation error due to forward movement of the knock body 10 during friction time.SOLUTION: A thermochromic writing instrument is configured so that: a projection part 12c projecting from a rear end opening 4a of a barrel 4 is formed on an upper part of a fixing cam 12; a part of a side face of a friction member 9 is swollen for forming a friction part 9e for contacting a paper face; a penetration hole 9a is formed on the friction member 9 then, the projection part 12c is inserted into the penetration hole 9a for integrating them; and in a state that, a pen point 6 of a writing body 5 is stored inside of the barrel 4, an outside face of a front end part 9f of the friction member 9 is adjacent to an inside face of a rear end part 3a of the barrel 4.SELECTED DRAWING: Figure 1

Description

本発明は、熱変色性筆記具に関し、詳細には、軸筒の後端開口から突出する弾性材料からなる摩擦部材を有したノック体を操作することにより、軸筒内に配設した固定カムを前進させると共に当該軸筒内に配設した回転カムを回動させ、軸筒の内部に収容した筆記体のペン先が該軸筒の前端孔より突出した状態となる熱変色性筆記具に関する。   The present invention relates to a thermochromic writing instrument, and in particular, by operating a knock body having a friction member made of an elastic material protruding from a rear end opening of a shaft tube, a fixed cam disposed in the shaft tube is provided. The present invention relates to a thermochromic writing instrument that moves forward and rotates a rotating cam disposed in the shaft cylinder so that a pen tip of a writing body accommodated in the shaft cylinder protrudes from a front end hole of the shaft cylinder.

特許文献１および特許文献２には、ペン先から熱変色性インキを吐出可能な筆記体を、軸筒内に前後方向へ移動可能に収容させ、軸筒後方のノック体を前方へ押動することにより、軸筒内に配設したコイルスプリングの弾発力に抗して、筆記体のペン先を軸筒の前端孔から突出させる熱変色性筆記具が開示されている。
特許文献１の熱変色性筆記具では、ノック体を弾性材料から一体で形成して外面に摩擦部を形成しており、特許文献２の熱変色性筆記具では、ノック体の外面に弾性材料からなる摩擦部を外皮として形成している。特許文献１および特許文献２の熱変色性筆記具は、弾性材料からなるノック体の摩擦部で熱変色性インキにより紙面等に形成された筆跡を摩擦して、その際に生じる摩擦熱により前記熱変色性インキの筆跡を熱変色させるものである。
このようなことから、ノック体に摩擦部を設けた熱変色性筆記具においては、摩擦を行いやすくするために、ノック体に設けた摩擦部が摩擦時に変形したり揺れ動かないようにすることが求められている。
また特許文献３の熱変色性筆記具では、摩擦時における摩擦部を設けたノック体の前後方向の移動を阻止するために、ペン先を軸筒の前端開口から突出させた状態において、ノック体である摩擦体に設けた係合部を軸筒に設けた被係合部に係合させる構造としてある。したがって、摩擦を行う際には摩擦体の係合部を軸筒に被係合部に係合させる動作が必要であり、さらに摩擦時は、軸筒の前端開口から突出したペン先が使用者の顔側に位置することから気をつけて摩擦を行う必要があった。 In Patent Document 1 and Patent Document 2, a writing body capable of discharging thermochromic ink from a nib is accommodated in a shaft cylinder so as to be movable in the front-rear direction, and a knock body behind the shaft cylinder is pushed forward. Thus, a thermochromic writing instrument is disclosed in which the pen tip of the writing body protrudes from the front end hole of the shaft cylinder against the elastic force of the coil spring disposed in the shaft cylinder.
In the thermochromic writing instrument of Patent Document 1, the knock body is integrally formed from an elastic material and the friction portion is formed on the outer surface. In the thermochromic writing instrument of Patent Document 2, the outer surface of the knock body is made of an elastic material. The friction part is formed as an outer skin. The thermochromic writing instruments of Patent Document 1 and Patent Document 2 rub the handwriting formed on the paper surface or the like with thermochromic ink at the friction part of the knock body made of an elastic material, and the heat is generated by the frictional heat generated at that time. It changes the handwriting of discolorable inks by heat.
For this reason, in a thermochromic writing instrument provided with a friction part on the knock body, the friction part provided on the knock body may be prevented from being deformed or swayed during friction in order to facilitate friction. It has been demanded.
Moreover, in the thermochromic writing instrument of Patent Document 3, in order to prevent the knock body provided with the friction portion during the friction from moving in the front-rear direction, in the state where the pen tip protrudes from the front end opening of the shaft cylinder, The engaging portion provided on a certain friction body is engaged with the engaged portion provided on the shaft tube. Therefore, when the friction is performed, it is necessary to engage the engaging portion of the friction body with the engaged portion with the shaft tube. Further, at the time of friction, the pen tip protruding from the front end opening of the shaft tube is used by the user. Because it is located on the face side, it was necessary to take care of friction.

特開２０１１−１５６８２６号公報JP 2011-156826 A 特開２０１１−２３０４７４号公報JP 2011-230474 A 特開２０１１−３７０８７号公報JP 2011-37087 A

本発明では、ノック体に設けた弾性材料からなる摩擦部材が、摩擦時に変形したり揺れ動き難くすると共に、摩擦時においてノック体が前進することによる誤作動が発生し難い構造の熱変色性筆記具を得ることを目的とした。   In the present invention, there is provided a thermochromic writing instrument having a structure in which the friction member made of an elastic material provided on the knock body is not easily deformed or swayed at the time of friction, and is less likely to malfunction due to advancement of the knock body at the time of friction. Aimed to get.

本発明は、
「１．軸筒の後端開口から突出する弾性材料からなる摩擦部材を有したノック体を操作することにより、前記軸筒内に配設した固定カムを前進させると共に当該軸筒内に配設した回転カムを回動させ、前記軸筒の内部に収容した筆記体のペン先が該軸筒の前端孔より突出した状態となる熱変色性筆記具であって、前記固定カムの上方に前記軸筒の後端開口から突出する突出部を形成し、前記摩擦部材の側面の一部を膨出させて紙面等に接触させる摩擦部を形成し、前記摩擦部材に貫通孔を形成して該貫通孔に前記突出部を挿着させて一体とし、且つ筆記体のペン先を前記軸筒の内部に収容した状態で前記摩擦部材の前端部の外側面を該軸筒の後端部の内側面に近接させる構造としたことを特徴とする熱変色性筆記具。
２．前記摩擦部材の貫通孔を前記軸筒の軸心に沿って形成すると共に、前記固定カムに形成した突出部の後端に前記摩擦部材の後端面より露出する鍔部を形成したことを特徴とする前記１項に記載の熱変色性筆記具。」である。 The present invention
"1. By operating a knock body having a friction member made of an elastic material protruding from the rear end opening of the shaft tube, the fixed cam disposed in the shaft tube is advanced and disposed in the shaft tube. A thermochromic writing instrument in which the pen tip of the writing body accommodated in the shaft cylinder is protruded from the front end hole of the shaft cylinder, and the shaft is disposed above the fixed cam. A protruding portion that protrudes from the rear end opening of the cylinder is formed, a friction portion that bulges a part of the side surface of the friction member and makes contact with the paper surface, etc. is formed, and a through hole is formed in the friction member. The protrusion is inserted into the hole so as to be integrated, and the outer surface of the front end portion of the friction member is the inner surface of the rear end portion of the shaft cylinder while the pen tip of the writing body is housed in the shaft cylinder. Thermochromic writing instrument characterized by having a structure close to
2. The through hole of the friction member is formed along the axial center of the shaft cylinder, and a collar portion exposed from the rear end surface of the friction member is formed at the rear end of the protruding portion formed in the fixed cam. The thermochromic writing instrument according to 1 above. It is.

摩擦部材を成形する弾性材料は、弾性を有する樹脂（ゴム、エラストマー）が挙げられ、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。尚、前記摩擦部材を成形する弾性材料は、高摩耗性の弾性材料（例えば、消しゴム等）よりも、摩擦時に消しカスが生じない低摩耗性の弾性材料が好ましい。また、固定カムは突出部によって弾性材料で形成された摩擦部材を支持させるために、硬質樹脂や金属など硬質材料で形成すればよい。
また摩擦部材の側面に形成する摩擦部は、摩擦部材の外周に沿ってフランジ状に形成したり、摩擦部材の外周に複数の凸部を放射状に形成してもよい。 Examples of the elastic material for molding the friction member include elastic resins (rubber and elastomer). For example, 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. Note that the elastic material for forming the friction member is preferably a low-abrasion elastic material that does not cause debris during friction, rather than a high-abrasion elastic material (for example, an eraser). The fixed cam may be formed of a hard material such as hard resin or metal in order to support the friction member formed of an elastic material by the protruding portion.
The friction part formed on the side surface of the friction member may be formed in a flange shape along the outer periphery of the friction member, or a plurality of convex portions may be formed radially on the outer periphery of the friction member.

本発明における摩擦部材の前端部と軸筒の後端部との隙間の関係は、摩擦部材を有したノック体を軸心に沿って押動した際には前進させることができ、且つ摩擦部材の摩擦部を紙面等に接触させて摩擦させる際には、軸筒が斜めに傾斜することでノック体が軸筒に対して傾いて、摩擦部材の前端部の外側面が軸筒の後端部の内側面に当接してノック体の前進が防止されるようにすることが肝要である。
また、摩擦部材の貫通孔を軸筒の軸心に沿って形成すると共に、固定カムに形成した突出部の後端に、摩擦部材の後端面より露出する鍔部を形成する場合には、鍔部が摩擦部材の貫通孔を挿通できるようにすると共に、当該鍔部と突出部の根元に形成した固定カムの段部とで摩擦部材の前後を挟持できるように形成することが好ましい。尚、鍔部の後端面は、平坦形状や円弧形状などノック操作の際に使用者の指が痛くならない形状に形成することが好ましい。
さらに、固定カムの段部に摩擦部材の前端面にくい込む突起を形成することにより、摩擦時に摩擦部材が回転してしまうことを防止できる。 In the present invention, the clearance between the front end portion of the friction member and the rear end portion of the shaft cylinder can be advanced when the knock body having the friction member is pushed along the axis, and the friction member. When the friction part is brought into contact with the paper or the like and rubbed, the shaft cylinder is inclined so that the knock body is inclined with respect to the shaft cylinder, and the outer surface of the front end portion of the friction member is the rear end of the shaft cylinder. It is important that the knock body is prevented from moving forward by abutting against the inner surface of the portion.
In addition, when the through hole of the friction member is formed along the axial center of the shaft cylinder and the flange exposed from the rear end surface of the friction member is formed at the rear end of the protrusion formed on the fixed cam, It is preferable that the portion can be inserted through the through hole of the friction member, and that the front and rear of the friction member can be sandwiched between the flange portion and a stepped portion of the fixed cam formed at the base of the protruding portion. In addition, it is preferable to form the rear end surface of the buttocks in a shape that does not hurt the user's finger during a knocking operation, such as a flat shape or an arc shape.
Furthermore, by forming a protrusion that is not easily received at the front end face of the friction member at the stepped portion of the fixed cam, it is possible to prevent the friction member from rotating during friction.

本発明の熱変色性筆記具によれば、ノック体に設けた摩擦部材の外側面が軸筒の後端開口と固定カムに設けた突出部とで支持されるので、摩擦時において摩擦部材が変形したり揺れ動くことを防止し、筆記体のペン先を前記軸筒の内部に収容した状態で摩擦を行う際にも、ノック体の前進による誤作動が生じ難いものとなる。   According to the thermochromic writing instrument of the present invention, since the outer surface of the friction member provided on the knock body is supported by the rear end opening of the shaft cylinder and the protrusion provided on the fixed cam, the friction member is deformed during friction. Even when friction is performed in a state where the pen tip of the writing body is housed inside the shaft cylinder, the malfunction due to the forward movement of the knock body is less likely to occur.

本実施例のボールペンにおける筆記体のペン先を軸筒の内部に収容した状態を示した断面図である。It is sectional drawing which showed the state which accommodated the pen point of the cursive body in the ball-point pen of a present Example inside the axial cylinder. 本実施例のボールペンにおける筆記体のペン先を軸筒の前端開口より突出させた状態を示した断面図である。It is sectional drawing which showed the state which made the pen point of the writing body in the ball-point pen of a present Example protrude from the front-end opening of a shaft cylinder. 本実施例のボールペンの要部を示した分解図である。It is the exploded view which showed the principal part of the ball-point pen of a present Example. 本実施例のボールペンで筆記を行っている状態を示した斜視図である。It is the perspective view which showed the state which is writing with the ball-point pen of a present Example. 本実施例のボールペンで摩擦を行っている状態を示した斜視図である。It is the perspective view which showed the state which is performing friction with the ball-point pen of a present Example. 摩擦を行っている状態の要部を示した断面図である。It is sectional drawing which showed the principal part of the state which is performing the friction.

次に図面を参照しながら、本実施例の熱変色性筆記具について説明を行う。尚、本実施例では、熱変色性筆記具としてボールペンについての説明を行うが、本発明は以下の実施例に限定されるものではない。また、図中の同じ部材、同じ部品については、同じ符号としてある。図中においてペン先がある側を前方とし反対側を後方として表現する。   Next, the thermochromic writing instrument of the present embodiment will be described with reference to the drawings. In this embodiment, a ballpoint pen will be described as a thermochromic writing instrument, but the present invention is not limited to the following embodiment. In addition, the same members and the same parts in the drawings are denoted by the same reference numerals. In the figure, the side with the pen tip is expressed as the front and the opposite side is expressed as the back.

図１〜図３を用いて、本実施例のボールペン構造について説明を行う。
図１は本実施例のボールペンにおける筆記体のペン先を軸筒の内部に収容した状態を示した断面図である。図２は本実施例のボールペンにおける筆記体のペン先を軸筒の前端開口より突出させた状態を示した断面図である。図３は本実施例のボールペンの要部を示した分解図である。
ボールペン１は、前軸２と後軸３とを螺合して形成した軸筒４内に、レフィル５を収容してある。レフィル５は、ボールペンチップをペン先６とし、ペン先６の後方にインキ収容筒７を装着してあり、軸筒４内に配したコイルスプリング８にて後方へ弾発され、軸筒４の後端開口４ａから突出した摩擦部材９を有したノック体１０を前方へ押動するように操作することによって、軸筒４の前端開口４ｂからペン先６を出没させることができる構造である。 The ball-point pen structure of the present embodiment will be described with reference to FIGS.
FIG. 1 is a cross-sectional view showing a state in which a pen tip of a writing body in the ballpoint pen of the present embodiment is housed inside a shaft cylinder. FIG. 2 is a cross-sectional view showing a state in which the pen tip of the writing body in the ballpoint pen of this embodiment is projected from the front end opening of the shaft cylinder. FIG. 3 is an exploded view showing the main part of the ballpoint pen of this embodiment.
The ballpoint pen 1 contains a refill 5 in a shaft cylinder 4 formed by screwing a front shaft 2 and a rear shaft 3 together. The refill 5 uses a ballpoint pen tip as a pen tip 6, and an ink containing cylinder 7 is mounted on the rear side of the pen tip 6, and is repelled rearward by a coil spring 8 disposed in the shaft cylinder 4. By operating the knock body 10 having the friction member 9 protruding from the rear end opening 4a so as to push forward, the pen tip 6 can be projected and retracted from the front end opening 4b of the shaft cylinder 4.

軸筒４の内部には、従来構造の回転カム機構が設けられており、後軸３の後端部３ａの内壁面には複数のカム溝１１を形成してあり、前方に山型状の凹凸部１２ａを形成し、外周面に前記カム溝１１に係合する複数の突起１２ｂを有した固定カム１２を配設し、固定カム１２の前方に、前記カム溝１１に係合する複数のカム突起１３ａを外周面に周状に形成し、前記固定カム部１２の凹凸部１２ａに噛合う噛合部１３ｂを有した回転カム１３を配設してあり、カム突起１３ａはカム溝１１に係止して回転カム１３はカム溝１１に沿って前後に移動可能としてある。
固定カム１２の後方には、軸筒４の軸心に沿って摩擦部材９に形成した貫通孔９ａに挿着させる突出部１２ｃを形成してあり、摩擦部材９の前端面９ｂを、固定カム１２の突出部１２ｃの根元に形成した段部１２ｄに当接させ、摩擦部材９の後端面９ｃを、固定カム１２の突出部１２ｃの後端に形成した鍔部１２ｅに当接させ、摩擦部材９の前後を挟持してある。また本実施例では、固定カム１２の段部１２ｄに、摩擦部材９の前端面９ｂにくい込む円錐状の突起１２ｆを形成してあり摩擦部材９の回転を防止してある。また摩擦部材９の後方の外側面９ｄには、断面半円状で円環状に膨出させた摩擦部９ｅを形成しており、紙面等に接触させて摩擦できるようにしてある。 A rotary cam mechanism having a conventional structure is provided inside the shaft cylinder 4, and a plurality of cam grooves 11 are formed on the inner wall surface of the rear end portion 3 a of the rear shaft 3. A fixed cam 12 having a concavo-convex portion 12 a and having a plurality of protrusions 12 b that engage with the cam groove 11 on the outer peripheral surface is disposed, and a plurality of engaging cams 11 are engaged in front of the fixed cam 12. The cam projection 13a is formed on the outer peripheral surface in a circumferential shape, and a rotating cam 13 having a meshing portion 13b that meshes with the concavo-convex portion 12a of the fixed cam portion 12 is disposed, and the cam projection 13a is engaged with the cam groove 11. The rotary cam 13 is stopped and can be moved back and forth along the cam groove 11.
On the rear side of the fixed cam 12, a protruding portion 12 c is formed along the axis of the shaft cylinder 4 to be inserted into a through hole 9 a formed in the friction member 9, and the front end surface 9 b of the friction member 9 is connected to the fixed cam 12. The friction member 9 is brought into contact with a step 12d formed at the base of the projecting portion 12c, and the rear end surface 9c of the friction member 9 is brought into contact with a flange 12e formed at the rear end of the projecting portion 12c of the fixed cam 12. 9 is sandwiched around. In this embodiment, the step 12d of the fixed cam 12 is formed with a conical protrusion 12f that is difficult to be brought into contact with the front end surface 9b of the friction member 9, thereby preventing the friction member 9 from rotating. A frictional part 9e having a semicircular cross section and bulging in an annular shape is formed on the rear outer surface 9d of the friction member 9, so that it can be brought into contact with the paper surface and rubbed.

本実施例のボールペン１は、図１に示した状態のノック体１０を前方へ押動するように操作することで、固定カム１２の前進に伴い回転カム１３のカム突起１３ａがカム溝１１の前端に移動し、固定カム１２の凹凸部１２ａの傾斜により回転カム１３のカム突起１３ａのカム斜面１３ｃがカム溝１１のカム斜面１１ａを滑り、レフィル５を介してコイルスプリング８で後方へ弾発された回転カム１３のカム突起１３ａが複数のカム溝１１間に形成された係合部１１ｂに係合して、ペン先６を軸筒４の前端開口４ｂから突出させた状態で維持することができ、図２に示した状態のノック体１０を再度前方へ押動するように操作することで、回転カム１３のカム突起１３ａとカム溝１１間の係合部１１ｂの係合状態を解除して、回転カム１３のカム突起１３ａと固定カム１２の突起１２ｂをカム溝１１の後方へ後退させ、図１に示した状態のようにペン先６を軸筒４の内部に収容させることができる。   The ballpoint pen 1 of this embodiment is operated so as to push forward the knock body 10 in the state shown in FIG. 1, so that the cam projection 13 a of the rotating cam 13 moves into the cam groove 11 as the fixed cam 12 advances. The cam slope 13c of the cam projection 13a of the rotating cam 13 slides on the cam slope 11a of the cam groove 11 due to the inclination of the concavo-convex portion 12a of the fixed cam 12, and is repelled rearward by the coil spring 8 via the refill 5. The cam projection 13a of the rotating cam 13 is engaged with the engaging portion 11b formed between the plurality of cam grooves 11, and the pen tip 6 is maintained in a state of protruding from the front end opening 4b of the shaft cylinder 4. 2, the engagement state of the engagement portion 11b between the cam projection 13a of the rotating cam 13 and the cam groove 11 is released by operating the knock body 10 in the state shown in FIG. The rotation cam 13 The projection 13a and the projection 12b of the fixed cam 12 is retracted to the rear of the cam groove 11, it is possible to accommodate the nib 6 as in the state shown in FIG. 1 inside the barrel 4.

尚、ノック体１０を前方へ押動する際には、使用者は摩擦部材９の後端面９ｃと共に固定カム１２の鍔部１２ｅにも触れるが、本実施例の鍔部１２ｅの後端面１２ｇは平坦形状に形成してあるため、ノック操作の際に使用者の指が痛くなることはなかった。   When the knock body 10 is pushed forward, the user touches the flange portion 12e of the fixed cam 12 together with the rear end surface 9c of the friction member 9, but the rear end surface 12g of the flange portion 12e of this embodiment is Since it was formed in a flat shape, the user's finger did not hurt during the knocking operation.

図４に示すように、本実施例のボールペン１は、軸筒４の前端開口４ｂから突出させたペン先６で紙面１００に熱変色性インキの筆跡１０１を形成することができた。   As shown in FIG. 4, the ballpoint pen 1 of the present embodiment was able to form the thermochromic ink handwriting 101 on the paper surface 100 with the pen tip 6 projected from the front end opening 4 b of the shaft tube 4.

次に、図５および図６を用いて、本実施例のボールペンで摩擦を行う状態についての説明を行う。図５は本実施例のボールペンで摩擦を行っている状態を示した斜視図であり、図６は摩擦を行っている状態の要部を示した断面図である。図６に示すように、本実施例のボールペン１は、摩擦時において摩擦部材９の摩擦部９ｅが紙面１００に接した際に、
摩擦部材９の前端部９ｆの外側面９ｄが後軸３の後端部３ａの内側面３ｂに当接してノック体１０の前進が防止される構造となっている。尚、本実施例では、摩擦部材９の後端面９ｃより固定カム１２の鍔部１２ｅが露出していることから、使用者が必然的に軸筒４を紙面１００に対して傾斜させて摩擦部材９を接触することとなり、ノック体１０が前進することによる誤作動が発生することなく、また使用者の顔側に向かって軸筒４の前端開口４ｂからペン先６が突出することも防止できた。 Next, a state where friction is performed with the ballpoint pen of the present embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a perspective view showing a state where friction is performed with the ballpoint pen of the present embodiment, and FIG. 6 is a cross-sectional view showing a main part in a state where friction is being performed. As shown in FIG. 6, when the ballpoint pen 1 of the present embodiment is in friction, when the friction portion 9e of the friction member 9 contacts the paper surface 100,
The outer side surface 9d of the front end portion 9f of the friction member 9 is in contact with the inner side surface 3b of the rear end portion 3a of the rear shaft 3 to prevent the knock body 10 from moving forward. In this embodiment, since the flange portion 12e of the fixed cam 12 is exposed from the rear end surface 9c of the friction member 9, the user inevitably inclines the shaft cylinder 4 with respect to the paper surface 100 to cause the friction member. 9, without causing malfunction due to advancement of the knock body 10, and can prevent the pen tip 6 from protruding from the front end opening 4 b of the shaft tube 4 toward the face of the user. It was.

また図５に示したように、摩擦部材９の摩擦部９ｅで摩擦を行う際には、摩擦部材９に回転する方向の力も加わるが、前述の通り本実施例の固定カム１２の段部１２ｄに、摩擦部材９の前端面９ｂにくい込む円錐状の突起１２ｆを形成したことから、摩擦部材９の不要な回転を防止することができた。   Further, as shown in FIG. 5, when friction is performed at the friction portion 9e of the friction member 9, a force in the direction of rotation is also applied to the friction member 9, but as described above, the step portion 12d of the fixed cam 12 of this embodiment. In addition, since the conical protrusion 12f that is difficult to receive on the front end surface 9b of the friction member 9 is formed, unnecessary rotation of the friction member 9 can be prevented.

１…ボールペン、２…前軸、
３…後軸、３ａ…後端部、３ｂ…内側面、
４…軸筒、４ａ…後端開口、４ｂ…前端開口、
５…レフィル、６…ペン先、
７…インキ収容筒、８…コイルスプリング、
９…摩擦部材、
９ａ…貫通孔、９ｂ…前端面、９ｃ…後端面、
９ｄ…外側面、９ｅ…摩擦部、９ｆ…前端部、
１０…ノック体、
１１…カム溝、１１ａ…カム斜面、１１ｂ…係合部、
１２…固定カム、１２ａ…凹凸部、１２ｂ…突起、
１２ｃ…突出部、１２ｄ…段部、１２ｅ…鍔部、
１２ｆ…突起、１２ｇ…後端面、
１３…回転カム、１３ａ…カム突起、１３ｂ…噛合部、
１３ｃ…カム斜面、
１００…紙面、１０１…筆跡。 1 ... ballpoint pen, 2 ... front shaft,
3 ... rear shaft, 3a ... rear end, 3b ... inner surface,
4 ... shaft cylinder, 4a ... rear end opening, 4b ... front end opening,
5 ... refill, 6 ... nib,
7 ... Ink container, 8 ... Coil spring,
9 ... friction member,
9a ... through hole, 9b ... front end surface, 9c ... rear end surface,
9d: outer surface, 9e: friction part, 9f: front end part,
10 ... Knock body,
11 ... Cam groove, 11a ... Cam slope, 11b ... Engagement part,
12 ... Fixed cam, 12a ... Uneven portion, 12b ... Projection,
12c ... projecting part, 12d ... step part, 12e ... collar part,
12f ... projection, 12g ... rear end surface,
13 ... Rotating cam, 13a ... Cam projection, 13b ... Meshing part,
13c ... cam slope,
100 ... paper, 101 ... handwriting.

Claims (2)

軸筒の後端開口から突出する弾性材料からなる摩擦部材を有したノック体を操作することにより、前記軸筒内に配設した固定カムを前進させると共に当該軸筒内に配設した回転カムを回動させ、前記軸筒の内部に収容した筆記体のペン先が該軸筒の前端孔より突出した状態となる熱変色性筆記具であって、前記固定カムの上方に前記軸筒の後端開口から突出する突出部を形成し、前記摩擦部材の側面の一部を膨出させて紙面等に接触させる摩擦部を形成し、前記摩擦部材に貫通孔を形成して該貫通孔に前記突出部を挿着させて一体とし、且つ筆記体のペン先を前記軸筒の内部に収容した状態で前記摩擦部材の前端部の外側面を該軸筒の後端部の内側面に近接させる構造としたことを特徴とする熱変色性筆記具。 By operating a knock body having a friction member made of an elastic material protruding from the rear end opening of the shaft tube, the fixed cam disposed in the shaft tube is advanced and a rotating cam disposed in the shaft tube Is a thermochromic writing instrument in which the pen tip of the writing body accommodated inside the shaft tube protrudes from the front end hole of the shaft tube, and is located behind the shaft tube above the fixed cam. Forming a protruding portion that protrudes from the end opening, forming a friction portion that bulges a part of the side surface of the friction member to contact a paper surface, etc., forming a through hole in the friction member, and forming the through hole in the through hole; The projecting portion is inserted and integrated, and the outer surface of the front end portion of the friction member is brought close to the inner surface of the rear end portion of the shaft cylinder in a state where the pen tip of the writing body is housed in the shaft tube. Thermochromic writing instrument characterized by having a structure. 前記摩擦部材の貫通孔を前記軸筒の軸心に沿って形成すると共に、前記固定カムに形成した突出部の後端に前記摩擦部材の後端面より露出する鍔部を形成したことを特徴とする請求項１に記載の熱変色性筆記具。 The through hole of the friction member is formed along the axial center of the shaft cylinder, and a collar portion exposed from the rear end surface of the friction member is formed at the rear end of the protruding portion formed in the fixed cam. The thermochromic writing instrument according to claim 1.
JP2014222508A 2014-10-31 2014-10-31 Thermochromic writing instrument Active JP6419531B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014222508A JP6419531B2 (en) 2014-10-31 2014-10-31 Thermochromic writing instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014222508A JP6419531B2 (en) 2014-10-31 2014-10-31 Thermochromic writing instrument

Publications (2)

Publication Number Publication Date
JP2016087864A true JP2016087864A (en) 2016-05-23
JP6419531B2 JP6419531B2 (en) 2018-11-07

Family

ID=56015557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014222508A Active JP6419531B2 (en) 2014-10-31 2014-10-31 Thermochromic writing instrument

Country Status (1)

Country Link
JP (1) JP6419531B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018123655A1 (en) * 2016-12-27 2018-07-05 株式会社パイロットコーポレーション Thermochromic writing tool
JP2020082634A (en) * 2018-11-29 2020-06-04 株式会社パイロットコーポレーション Writing instrument

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009214515A (en) * 2008-03-13 2009-09-24 Pilot Ink Co Ltd Mounting structure of flexible member
JP2011037087A (en) * 2009-08-10 2011-02-24 Pilot Ink Co Ltd Thermochromic writing utensil
JP2011230474A (en) * 2010-04-30 2011-11-17 Pilot Ink Co Ltd Heat-discoloring writing tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009214515A (en) * 2008-03-13 2009-09-24 Pilot Ink Co Ltd Mounting structure of flexible member
JP2011037087A (en) * 2009-08-10 2011-02-24 Pilot Ink Co Ltd Thermochromic writing utensil
JP2011230474A (en) * 2010-04-30 2011-11-17 Pilot Ink Co Ltd Heat-discoloring writing tool

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018123655A1 (en) * 2016-12-27 2018-07-05 株式会社パイロットコーポレーション Thermochromic writing tool
JP2018103506A (en) * 2016-12-27 2018-07-05 株式会社パイロットコーポレーション Thermochromic writing instrument
CN110139763A (en) * 2016-12-27 2019-08-16 株式会社百乐 Thermochromism pen tool
US10787025B2 (en) 2016-12-27 2020-09-29 Kabushiki Kaisha Pilot Corporation Thermochromic writing tool
CN110139763B (en) * 2016-12-27 2020-10-20 株式会社百乐 Thermochromic pen
JP2020082634A (en) * 2018-11-29 2020-06-04 株式会社パイロットコーポレーション Writing instrument
JP7208776B2 (en) 2018-11-29 2023-01-19 株式会社パイロットコーポレーション writing instrument

Also Published As

Publication number Publication date
JP6419531B2 (en) 2018-11-07

Similar Documents

Publication Publication Date Title
JP7087370B2 (en) Long object feeding device and writing tools equipped with this
JP6304958B2 (en) Writing instrument with eraser
JP2013063541A (en) Retractable writing instrument
JP2013220602A (en) Writing utensil
JP5943343B2 (en) Knock-type writing instrument
JP6419531B2 (en) Thermochromic writing instrument
JP6379010B2 (en) Thermochromic writing instrument
JP6204663B2 (en) Thermochromic writing instrument
JP2018192660A (en) Thermochromic writing instrument
JP6204662B2 (en) Thermochromic writing instrument
JP7260969B2 (en) writing instrument
JP6669817B2 (en) Thermochromic writing instrument
JP6400432B2 (en) Thermochromic writing instrument
JP2010173244A (en) Retractable writing utensil
JP2019010827A (en) Knock type writing instrument
JP6410901B2 (en) Thermochromic writing instrument
JP7208776B2 (en) writing instrument
JP5262088B2 (en) Writing instrument
JP2011212985A (en) Retractable writing utensil
JP2016010952A (en) Multi-core type writing utensil
JP7261009B2 (en) writing instrument
JP7220630B2 (en) writing instrument
JP2018108663A (en) Thermochromic writing tool
JP6327786B2 (en) Thermochromic writing instrument
JP2006150725A (en) Retractable writing utensil

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20170808

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20180619

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20180615

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20180806

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20181009

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20181010

R150 Certificate of patent or registration of utility model

Ref document number: 6419531

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150