JP3175844U - Multi-core thermochromic writing instrument - Google Patents

Multi-core thermochromic writing instrument Download PDF

Info

Publication number
JP3175844U
JP3175844U JP2012001354U JP2012001354U JP3175844U JP 3175844 U JP3175844 U JP 3175844U JP 2012001354 U JP2012001354 U JP 2012001354U JP 2012001354 U JP2012001354 U JP 2012001354U JP 3175844 U JP3175844 U JP 3175844U
Authority
JP
Japan
Prior art keywords
writing
thermochromic
lid
friction
core
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.)
Expired - Lifetime
Application number
JP2012001354U
Other languages
Japanese (ja)
Inventor
秀之 田中
孝司 蟹江
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 Ink Co Ltd
Original Assignee
Pilot Ink Co Ltd
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 Ink Co Ltd filed Critical Pilot Ink Co Ltd
Priority to JP2012001354U priority Critical patent/JP3175844U/en
Application granted granted Critical
Publication of JP3175844U publication Critical patent/JP3175844U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

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

Abstract

【課題】摩擦によって熱変色性インキによる筆跡を迅速に熱変色させることができ、しかも、開口部を開閉する際、蓋部の操作が容易な多芯式熱変色性筆記具を提供する。
【解決手段】軸筒２内に複数の筆記体３を前後方向に移動可能に収容する。軸筒２の窓孔２２から操作体４の操作部４１を突出させる。軸筒２の前端孔２１から択一的にペン先３１を出没させる。軸筒２の後端に、窓孔２２を後方に開口させる開閉自在の開口部を設ける。軸筒２の後端部に、前記開口部を開閉自在とする蓋部５を設ける。筆記体３の内部に熱変色性インキを収容する。蓋部５の外面に、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、弾性材料からなる摩擦部７を設ける。
【選択図】図１Provided is a multi-core thermochromic writing instrument capable of rapidly changing the color of a handwriting with a thermochromic ink by friction and easily operating a lid when opening and closing an opening.
A plurality of writing bodies are accommodated in a shaft cylinder so as to be movable in the front-rear direction. The operating portion 41 of the operating body 4 is protruded from the window hole 22 of the shaft cylinder 2. The pen tip 31 is alternatively projected and retracted from the front end hole 21 of the shaft tube 2. An openable / closable opening for opening the window hole 22 rearward is provided at the rear end of the shaft tube 2. A lid 5 is provided at the rear end of the shaft tube 2 so that the opening can be opened and closed. A thermochromic ink is accommodated in the cursive body 3. A friction part 7 made of an elastic material is provided on the outer surface of the lid part 5 so that the handwriting of the thermochromic ink is rubbed and the handwriting is thermally discolored by frictional heat generated at that time.
[Selection] Figure 1

Description

本考案は、多芯式熱変色性筆記具に関する。 The present invention relates to a multi-core thermochromic writing instrument.

文献１には、筆記用芯体の内部に熱変色性インキを収容し、前記筆記用芯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、摩擦用芯体の前端に、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チップを設け、前記筆記用芯体のペン先と前記摩擦用芯体のチップを択一的に軸筒の前端孔から出没可能にする出没機構を備えた熱変色性筆記具が記載されている。 Document 1 contains thermochromic ink inside the writing core, a pen tip capable of discharging the thermochromic ink at the front end of the writing core, and the front end of the friction core, A tip capable of thermally discoloring the handwriting of the thermochromic ink by rubbing the handwriting of the thermochromic ink is provided, and the pen tip of the writing core and the tip of the friction core are alternatively provided as shafts. There is described a thermochromic writing instrument provided with a retracting mechanism that allows it to protrude from the front end hole of the cylinder.

また、文献１には、前記筆記用芯体を後方に付勢する弾発体と、前記摩擦用芯体を後方に付勢する弾発体とを軸筒内に収容し、前記筆記用芯体の後端に操作体を連結し、前記摩擦用芯体の後端に操作体を連結し、前記軸筒の側壁に前後方向に延びる複数の窓孔を径方向に貫設し、前記各々の窓孔から径方向外方に前記各々の操作体を突出させ、一つの操作体を窓孔に沿って前方にスライドさせることにより、その一つの操作体に対応した筆記用芯体のペン先または摩擦用芯体のチップを軸筒の前端孔から外部に突出させるとともに、先に突出状態にあった筆記用芯体のペン先または摩擦用芯体のチップを軸筒内に没入させてなる出没機構を備えた熱変色性筆記具が記載されている。 Further, in Document 1, an elastic body that urges the writing core body backward and an elastic body that urges the friction core body backward are accommodated in a shaft tube, and the writing core An operating body is connected to the rear end of the body, an operating body is connected to the rear end of the friction core, and a plurality of window holes extending in the front-rear direction are provided in a radial direction in the side wall of the shaft cylinder, By projecting each of the operating bodies radially outward from the window hole and sliding one operating body forward along the window hole, the pen tip of the writing core corresponding to the one operating body Alternatively, the tip of the friction core is protruded to the outside from the front end hole of the shaft cylinder, and the pen tip of the writing core or the tip of the friction core that has been previously protruded is immersed in the shaft cylinder. A thermochromic writing instrument with a haunting mechanism is described.

特開２００８−２４７０２５号公報JP 2008-247025 A

前記従来の熱変色性筆記具の摩擦用芯体のチップでは、熱変色性インキによる筆跡が大きい場合、熱変色性インキによる筆跡を摩擦によって迅速に熱変色させることが困難である。また、前記従来の熱変色性筆記具は、開口部を開閉する際、蓋部を操作する部分が少ないため、蓋部の操作が容易ではない。 In the tip of the friction core of the conventional thermochromic writing instrument, when the handwriting by the thermochromic ink is large, it is difficult to quickly thermally discolor the handwriting by the thermochromic ink by friction. Moreover, since the said conventional thermochromic writing instrument has few parts which operate a cover part when opening and closing an opening part, operation of a cover part is not easy.

本考案は、前記従来の問題点を解決するものであって、熱変色性インキによる大きな筆跡を摩擦によって迅速に熱変色させることができ、しかも、開口部を開閉する際、蓋部の操作が容易な多芯式熱変色性筆記具を提供しようとするものである。尚、本考案で、「前」とはペン先側を指し、「後」とはその反対側を指す。 The present invention solves the above-mentioned conventional problems, and can quickly discolor a large handwriting by thermochromic ink by friction, and when opening and closing the opening, the operation of the lid is not necessary. An object of the present invention is to provide an easy multi-core thermochromic writing instrument. In the present invention, “front” refers to the pen tip side, and “rear” refers to the opposite side.

［１］本願の第１の考案は、軸筒２内に複数の筆記体３を前後方向に移動可能に収容し、前記各々の筆記体３の内部に熱変色性インキを収容し且つ前記各々の筆記体３の前端に前記熱変色インキが吐出可能なペン先３１を備え、前記各々の筆記体３の後端に操作体４を取り付け、前記各々の操作体４を弾発体６により後方に付勢し、前記軸筒２の側壁に軸方向に延びる複数の窓孔２２を径方向に貫設し、前記各々の窓孔２２から径方向外方に前記各々の操作体４の操作部４１を突出させ、一つの操作部４１を窓孔２２に沿って前方にスライドさせることにより、その一つの操作体４が取り付けられた筆記体３のペン先３１を軸筒の前端孔２１から突出させるとともに、先に突出状態にあった他の筆記体のペン先３１を軸筒２内に没入させ、前記軸筒２の後端に、前記各々の窓孔２２を後方に開口させる開閉自在の開口部２３を設け、前記開口部２３を介して筆記体３及び操作体４を連結状態で軸筒２内から取り外し可能且つ軸筒２内に挿入可能に構成し、前記軸筒２の後端部に、前記開口部２３を開閉自在とする蓋部５を設けた多芯式熱変色性筆記具であって、前記蓋部５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、弾性材料からなる摩擦部７を設けたことを要件とする。 [1] In the first device of the present application, a plurality of writing bodies 3 are accommodated in the shaft cylinder 2 so as to be movable in the front-rear direction, thermochromic ink is accommodated in each of the writing bodies 3, and each A pen tip 31 capable of discharging the thermochromic ink is provided at the front end of each of the writing bodies 3, and the operation bodies 4 are attached to the rear ends of the respective writing bodies 3. A plurality of window holes 22 extending in the axial direction are provided in the side wall of the shaft cylinder 2 in the radial direction, and the operation portions of the respective operation bodies 4 are radially outward from the respective window holes 22. 41 is protruded, and one operation portion 41 is slid forward along the window hole 22 so that the pen tip 31 of the writing body 3 to which the one operation body 4 is attached protrudes from the front end hole 21 of the shaft cylinder. In addition, the pen point 31 of the other cursive body that had been in the protruding state was immersed in the shaft tube 2 and the front Openable and closable openings 23 for opening the respective window holes 22 rearward are provided at the rear end of the shaft cylinder 2, and the writing body 3 and the operation body 4 are connected to each other through the openings 23 in the shaft cylinder 2. A multi-core thermochromic writing instrument that is configured to be removable from the shaft cylinder 2 and to be inserted into the shaft cylinder 2 and is provided with a lid 5 at the rear end of the shaft cylinder 2 that allows the opening 23 to be opened and closed. It is a requirement that the outer surface of the lid portion 5 is provided with a friction portion 7 made of an elastic material capable of rubbing the handwriting of the thermochromic ink and heat-discoloring the handwriting with frictional heat generated at that time.

前記第１の考案の多芯式熱変色性筆記具１は、蓋部５の外面に、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、弾性材料からなる摩擦部７を設けたことにより、摩擦部７を大きく形成でき、熱変色性インキによる大きな筆跡を摩擦によって迅速に熱変色させることができる。さらに、前記第１の考案の多芯式熱変色性筆記具１は、蓋部５の外面に弾性材料からなる摩擦部７を設けたことにより、開口部２３を開閉する際、摩擦部７を操作でき、そのとき、蓋部５の開閉操作時、摩擦部７と指とが滑ることを防止でき且つ指に痛みを感じることがなく、蓋部５に力を加えやすいため、蓋部５の操作が容易となる。 The multi-core thermochromic writing instrument 1 of the first device is made of an elastic material capable of rubbing the handwriting of the thermochromic ink on the outer surface of the lid 5 and thermally changing the handwriting with frictional heat generated at that time. By providing the friction part 7 as described above, the friction part 7 can be formed large, and a large handwriting by the thermochromic ink can be rapidly discolored by friction. Further, the multi-core thermochromic writing instrument 1 of the first invention is provided with the friction part 7 made of an elastic material on the outer surface of the lid part 5, so that the friction part 7 is operated when the opening part 23 is opened and closed. At that time, when the lid 5 is opened and closed, the friction portion 7 and the finger can be prevented from slipping, the finger is not painful, and it is easy to apply force to the lid 5. Becomes easy.

［２］本願の第２の考案は、前記第１の考案の多芯式熱変色性筆記具１において、蓋部５の後面に取付部５４を形成し、摩擦部７に被取付部７１を形成し、前記蓋部５の取付部５４と前記摩擦部７の被取付部７１とを係合させることを要件とする。 [2] The second device of the present application is that, in the multi-core thermochromic writing instrument 1 of the first device, a mounting portion 54 is formed on the rear surface of the lid 5 and a mounted portion 71 is formed on the friction portion 7. In addition, it is a requirement that the attaching portion 54 of the lid portion 5 and the attached portion 71 of the friction portion 7 are engaged.

前記第２の考案の多芯式熱変色性筆記具１は、前記蓋部５の取付部５４と摩擦部７の被取付部７１とを係合させることによって、摩擦部７と蓋部５との強固な取り付けが可能となり、摩擦時に摩擦部７が蓋部５から外れることを防止できる。 The multi-core thermochromic writing instrument 1 according to the second invention is configured such that the attaching portion 54 of the lid portion 5 and the attached portion 71 of the friction portion 7 are engaged with each other, whereby the friction portion 7 and the lid portion 5 are engaged. Strong attachment is possible, and it is possible to prevent the friction portion 7 from being detached from the lid portion 5 during friction.

［３］本願の第３の考案は、前記第１の考案の多芯式熱変色性筆記具１において、蓋部５と摩擦部７とが弾性材料により一体に形成されることを要件とする。 [3] The third device of the present application requires that the lid portion 5 and the friction portion 7 are integrally formed of an elastic material in the multi-core thermochromic writing instrument 1 of the first device.

前記第３の考案の多芯式熱変色性筆記具１は、蓋部５と摩擦部７が一体に形成されることによって、部品点数を減少させ、安価に提供でき、且つ、摩擦時に摩擦部７が蓋部５から外れることがない。 The multi-core thermochromic writing instrument 1 according to the third aspect of the present invention can be provided at a low cost by reducing the number of parts by integrally forming the lid portion 5 and the friction portion 7, and the friction portion 7 can be provided at the time of friction. Does not come off the lid 5.

・摩擦部
尚、本考案の摩擦部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。前記摩擦体４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。 Friction part The elastic material constituting the friction part of the present invention is preferably a synthetic resin (rubber or elastomer) having elasticity, 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. The synthetic resin having elasticity constituting the friction body 4 is a low-abrasion elastic material in which wear debris (erasure debris) hardly occurs at the time of friction as compared with a high-abrasion elastic material (for example, an eraser). Preferably it consists of.

・熱変色性インキ
尚、本考案において、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 invention, 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.

本考案では、図５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５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 invention, as shown in FIG. 5, the shape of the curve plotting the change of the color density due to the temperature change is opposite to the case where the temperature is raised from the lower temperature side than the color change temperature range, and from the higher temperature side than the color change temperature range. The color changes by following a different path depending on the descending state, and the color development state in the low temperature range below the complete color development temperature (t 1 ) or the color erase state in the high temperature range above the complete color erase temperature (t 4 ) 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 t 2 and t 3 (substantially two-phase retention temperature range)]. In FIG. 5, ΔH indicates 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.

本考案では、前記熱変色性インキの摩擦部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、本考案では、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体４による摩擦熱で容易に変色することができる。 In the present invention, the color change temperature due to frictional heat of the friction portion of the thermochromic ink is set to 25 ° C. to 95 ° C. (preferably 36 ° C. to 95 ° C.). That is, in the present invention, the high temperature side discoloration point [complete decoloring temperature (t 4 )] is set in a range of 25 ° C. to 95 ° C. (preferably 36 ° C. to 90 ° C.), and the low temperature side discoloration point [ It is effective to set the complete color development temperature (t 1 )] in the range of −30 ° C. to + 20 ° C. (preferably −30 ° C. to + 10 ° C.). Accordingly, it is possible to effectively maintain the color exhibited in the normal state (daily life temperature range), and it is possible to easily change the handwriting by the reversible thermochromic ink with the frictional heat generated by the friction body 4.

本考案の多芯式熱変色性筆記具は、熱変色性インキによる大きな筆跡を摩擦によって迅速に熱変色させることができ、しかも、開口部を開閉する際、蓋部の操作が容易となる。 The multi-core thermochromic writing instrument of the present invention can rapidly discolor a large handwriting by thermochromic ink by friction, and the lid can be easily operated when opening and closing the opening.

本考案の第１の実施の形態の開口部の閉鎖状態の縦断面図である。It is a longitudinal cross-sectional view of the closed state of the opening part of the 1st Embodiment of this invention. 図１の開口部の開口状態の側面図及び蓋部の縦断面図である。It is the side view of the opening state of the opening part of FIG. 1, and the longitudinal cross-sectional view of a cover part. 本考案の第２の実施の形態の開口部の閉鎖状態の縦断面図である。It is a longitudinal cross-sectional view of the closed state of the opening part of the 2nd Embodiment of this invention. 図３の開口部の開口状態の側面図及び蓋部の縦断面図である。It is the side view of the opening state of the opening part of FIG. 3, and the longitudinal cross-sectional view of a cover part. 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.

＜第１の実施の形態＞
本考案の第１の実施の形態を図１及び図２に示す。
本実施の形態の多芯式熱変色性筆記具１は、軸筒２内に複数本（具体的には２本）の筆記体３が前後方向に移動可能に収容されている。前記各々の筆記体３は、弾発体６（具体的には圧縮コイルスプリング）により、後方に付勢されている。 <First Embodiment>
A first embodiment of the present invention is shown in FIGS.
In the multi-core thermochromic writing instrument 1 of the present embodiment, a plurality of (specifically, two) writing bodies 3 are accommodated in a shaft cylinder 2 so as to be movable in the front-rear direction. Each of the writing bodies 3 is urged rearward by an elastic body 6 (specifically, a compression coil spring).

（軸筒）
前記軸筒２は、先細状の円筒体からなる前軸２ａと、該前軸２ａの後端部と螺合または圧入により取り付けられる円筒状の後軸２ｂとからなる。前記前軸２ａの前端には、筆記体３のペン先３１が突出可能な前端孔２１が軸方向に貫設される。前記前軸２ａ及び後軸２ｂは、合成樹脂（例えば、ポリカーボネイト等）の射出成形により得られる。 (Shaft tube)
The shaft cylinder 2 includes a front shaft 2a formed of a tapered cylindrical body and a cylindrical rear shaft 2b attached to the rear end portion of the front shaft 2a by screwing or press-fitting. At the front end of the front shaft 2a, a front end hole 21 through which the pen tip 31 of the writing body 3 can protrude is provided in the axial direction. The front shaft 2a and the rear shaft 2b are obtained by injection molding of a synthetic resin (for example, polycarbonate).

前記後軸２ｂの後部の側壁には、複数本（具体的には２本）の前後方向に延びる細長状の窓孔２２が、径方向に貫設される。前記２本の窓孔２２は、互いに、軸線に対して対称の位置に形成される。また、前記後軸２ｂの後端部には、軸方向に貫通し且つ径方向外方に開口する開口部２３が形成される。前記開口部２３は、後軸２ｂの後端（即ち軸筒２の後端）において窓孔２２と連通され、それにより、窓孔２２後端が後方に切り欠かれ後方に開口されている。前記開口部２３を通して、操作体４が取り付けられた状態の筆記体３を、軸筒２内に挿入可能且つ軸筒２内から取り出し可能に構成される。 A plurality of (specifically, two) elongated window holes 22 extending in the front-rear direction are provided in the radial direction in the rear side wall of the rear shaft 2b. The two window holes 22 are formed at symmetrical positions with respect to the axis. In addition, an opening 23 that penetrates in the axial direction and opens outward in the radial direction is formed at the rear end of the rear shaft 2b. The opening 23 communicates with the window hole 22 at the rear end of the rear shaft 2b (that is, the rear end of the shaft cylinder 2), whereby the rear end of the window hole 22 is notched rearward and opened rearward. The writing body 3 with the operating body 4 attached thereto can be inserted into the shaft tube 2 and taken out from the shaft tube 2 through the opening 23.

また、前記後軸２ｂの窓孔２２の相互間の側壁内面には、前後方向に延びるリブよりなる係止壁部（図示せず）が形成され、前記係止壁部に、ペン先３１が突出した際の筆記体３の操作体４の後端が係止される。また、前記後軸２ｂの窓孔２２の相互間の側壁外面には、クリップ２５が設けられる。 Further, a locking wall portion (not shown) made of a rib extending in the front-rear direction is formed on the inner surface of the side wall between the window holes 22 of the rear shaft 2b, and a pen tip 31 is formed on the locking wall portion. The rear end of the operation body 4 of the writing body 3 when protruding is locked. Further, a clip 25 is provided on the outer surface of the side wall between the window holes 22 of the rear shaft 2b.

（蓋部）
前記後軸２ｂの後端部には、前記開口部２３を開閉自在にする蓋部５が回動自在に設けられる。前記蓋部５の一端部は、クリップ２５基部に、ヒンジ部５１により回動自在に接続される。前記蓋部５は、略前後方向に回動自在となる。前記蓋部５の前面には、当接壁部５２が形成される。前記当接壁部５２に、ペン先没入状態の筆記体３の後端に連結された各々の操作体４の後端が、当接される。尚、本考案において、前記当接壁部５２は、蓋部５の前面に形成される構成以外にも、軸筒２（後軸２ｂ）と一体に形成されてもよい。 (Cover)
At the rear end portion of the rear shaft 2b, a lid portion 5 that freely opens and closes the opening portion 23 is rotatably provided. One end of the lid 5 is pivotally connected to the base of the clip 25 by a hinge 51. The lid 5 is rotatable in a substantially front-rear direction. A contact wall 52 is formed on the front surface of the lid 5. The rear end of each operation body 4 connected to the rear end of the writing body 3 in the pen tip immersion state is in contact with the contact wall portion 52. In the present invention, the abutting wall portion 52 may be formed integrally with the shaft cylinder 2 (rear shaft 2b) in addition to the configuration formed on the front surface of the lid portion 5.

前記蓋部５の他端部の前面には、凹部または孔部よりなる係合部５３が設けられる。後軸２ｂの後端には、前記係合部５３と係合可能な突部よりなる被係合部２４が設けられる。前記係合部５３の内面には、内向突起が形成され、一方、前記被係合部２４の外面には、前記内向突起と乗り越え係止可能な外向突起が形成される。 On the front surface of the other end portion of the lid portion 5, an engaging portion 53 including a concave portion or a hole portion is provided. At the rear end of the rear shaft 2b, an engaged portion 24 including a protrusion that can engage with the engaging portion 53 is provided. An inward projection is formed on the inner surface of the engaging portion 53, while an outward projection that can get over and engage with the inward projection is formed on the outer surface of the engaged portion 24.

（摩擦部）
蓋部５の後面には、取付部５４（具体的には後方に突出する凸部）が形成される。前記取付部５４が、摩擦部７の被取付部７１（具体的には凹部）に係合される（具体的には凸部が凹部に圧入される）。それにより、摩擦部７が蓋部５の後面に固定される。尚、これ以外にも、前記取付部５４が凹部であり、前記被取付部が凸部である構成でもよい。前記摩擦部７は、弾性材料からなる。前記摩擦部７は、後方に向かうに従い外径が小さくなる凸曲面状の表面を備える。尚、前記摩擦部７は、交換可能なように、蓋部５後面と着脱自在とすることもできる。 (Friction part)
An attachment portion 54 (specifically, a convex portion protruding rearward) is formed on the rear surface of the lid portion 5. The mounting portion 54 is engaged with a mounted portion 71 (specifically, a concave portion) of the friction portion 7 (specifically, the convex portion is press-fitted into the concave portion). Thereby, the friction part 7 is fixed to the rear surface of the lid part 5. In addition, the structure which the said attaching part 54 is a recessed part and the said to-be-attached part is a convex part besides this may be sufficient. The friction part 7 is made of an elastic material. The friction part 7 includes a convex curved surface whose outer diameter decreases toward the rear. In addition, the said friction part 7 can also be made detachable with respect to the rear surface of the cover part 5 so that replacement | exchange is possible.

（筆記体）
前記各々の筆記体３は、ボールペンレフィルであり、前端にボールが回転可能に抱持されたボールペンチップ（即ちペン先３１）と、該ボールペンチップを前端に備え且つ後端が開口されたインキ収容管３２とからなる。前記インキ収容管３２の内部には、水性ゲルよりなる熱変色性インキと、インキの後端に配置され且つインキの消費に伴い前進する高粘度流体からなる追従体が充填される。 (Cursive)
Each of the writing bodies 3 is a ball-point pen refill, and includes a ball-point pen tip (that is, a pen tip 31) in which a ball is rotatably held at the front end, and an ink container having the ball-point pen tip at the front end and having an open rear end. A tube 32; The ink storage tube 32 is filled with a thermochromic ink made of an aqueous gel and a follower made of a high-viscosity fluid that is disposed at the rear end of the ink and moves forward as the ink is consumed.

前記ボールペンチップは、前端に回転可能に抱持されたボールを弾発体等により前方に付勢し、前端縁部の内面にボールを密接させる構成が採用される。また、ボールペンチップは、インキ収容管３２の前端開口部に圧入等により直接、取り付けてもよいが、本実施の形態ではペン先ホルダーを介してインキ収容管３２の前端開口部に固着される。 The ballpoint pen tip employs a configuration in which a ball held rotatably at the front end is urged forward by a projectile or the like, and the ball is brought into close contact with the inner surface of the front end edge. In addition, the ballpoint pen tip may be directly attached to the front end opening of the ink containing tube 32 by press fitting or the like, but in this embodiment, it is fixed to the front end opening of the ink containing tube 32 via the pen tip holder.

（操作体）
前記各々の筆記体３の後端（即ちインキ収容管３２の後端開口部）には、操作体４が取り付けられる。前記各々の操作体４は、後端部に形成され且つ軸筒２の窓孔２２から外部に突出する操作部４１と、該操作部４１の反対側に設けられる後側突出部４３と、該操作部４１の反対側の後側突出部４３の前方に設けられる前側突出部４２と、前端部に形成され且つインキ収容管３２の後端開口部に嵌入される嵌入部４４と、該嵌入部４４の後方に形成される鍔部４５とを備える。また、前記鍔部４５の前面には、弾発体６の後端が係止される。また、前記操作体４の両方の側面には抜け止め突起４６が形成される。前記抜け止め突起４６は窓孔２２の両方の側壁内面に係合可能である。 (Operation body)
The operation body 4 is attached to the rear end of each of the writing bodies 3 (that is, the rear end opening of the ink containing tube 32). Each of the operation bodies 4 includes an operation portion 41 formed at the rear end portion and projecting outside from the window hole 22 of the shaft cylinder 2, a rear side projection portion 43 provided on the opposite side of the operation portion 41, A front projecting portion 42 provided in front of the rear projecting portion 43 on the opposite side of the operation portion 41; a fitting portion 44 formed at the front end portion and fitted into the rear end opening of the ink containing tube 32; and the fitting portion 44 and a flange 45 formed behind 44. In addition, the rear end of the projectile 6 is locked to the front surface of the flange portion 45. Further, a retaining projection 46 is formed on both side surfaces of the operating body 4. The retaining projection 46 can be engaged with the inner surfaces of both side walls of the window hole 22.

前記各々の操作体４は、合成樹脂（例えば、ポリアセタール樹脂、ＡＢＳ樹脂等）の成形体からなる。前記各々の操作体４は、連結される筆記体３の内部（即ちインキ収容管３２内部）に収容されたインキの色と略同じ色に着色される。具体的には、前記操作体４の各々は、連結される筆記体３のインキ色と略同じ色に着色された合成樹脂の成形体からなる。 Each operation body 4 is formed of a molded body of a synthetic resin (for example, polyacetal resin, ABS resin, etc.). Each of the operation bodies 4 is colored in substantially the same color as the color of the ink stored in the connected writing body 3 (that is, in the ink storage tube 32). Specifically, each of the operation bodies 4 is formed of a synthetic resin molded body colored in substantially the same color as the ink color of the connected writing body 3.

筆記体３のペン先３１が没入状態のとき、その筆記体３に取り付けられた操作体４の後端部は、蓋部５の前面に形成された当接壁部５２に当接される。一方、筆記体３のペン先３１が突出状態のとき、その筆記体３に取り付けられた操作体４の後端部は、軸筒２の内壁に形成された係止壁部に係止される。 When the pen point 31 of the writing body 3 is in an immersive state, the rear end portion of the operating body 4 attached to the writing body 3 is brought into contact with a contact wall portion 52 formed on the front surface of the lid portion 5. On the other hand, when the pen tip 31 of the writing body 3 is in a protruding state, the rear end portion of the operation body 4 attached to the writing body 3 is locked to a locking wall portion formed on the inner wall of the shaft tube 2. .

ペン先没入状態にある筆記体３の後端に連結された操作体４の前側突出部４２は、その操作体４の操作部４１を前方にスライド操作した際、先にペン先突出状態にある他の筆記体３の後端に連結された操作体４の後側突出部４３と当接され、他の筆記体３のペン先突出状態が解除される。 The front protruding portion 42 of the operating body 4 connected to the rear end of the writing body 3 in the pen tip immersing state is in a pen tip protruding state when the operating portion 41 of the operating body 4 is slid forward. The pendant protruding state of the other cursive body 3 is released by contacting the rear projecting portion 43 of the operating body 4 connected to the rear end of the other cursive body 3.

本実施の形態の多芯式熱変色性筆記具１は、蓋部５の外面に、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、弾性材料からなる摩擦部７を設けたことにより、摩擦部７を大きく形成でき、熱変色性インキによる大きな筆跡を摩擦によって迅速に熱変色させることができる。さらに、前記第１の考案の多芯式熱変色性筆記具１は、蓋部５の外面に弾性材料からなる摩擦部７を設けたことにより、開口部２３を開閉する際、摩擦部７を操作でき、そのとき、蓋部５の開閉操作時、摩擦部７と指とが滑ることを防止でき且つ指に痛みを感じることがなく、蓋部５に力を加えやすいため、蓋部５の操作が容易となる。 The multi-core thermochromic writing instrument 1 of the present embodiment is made of an elastic material capable of rubbing the handwriting of the thermochromic ink on the outer surface of the lid portion 5 and thermally changing the handwriting with frictional heat generated at that time. By providing the friction part 7, the friction part 7 can be formed large, and a large handwriting by the thermochromic ink can be rapidly discolored by friction. Further, the multi-core thermochromic writing instrument 1 of the first invention is provided with the friction part 7 made of an elastic material on the outer surface of the lid part 5, so that the friction part 7 is operated when the opening part 23 is opened and closed. At that time, when the lid 5 is opened and closed, the friction portion 7 and the finger can be prevented from slipping, the finger is not painful, and it is easy to apply force to the lid 5. Becomes easy.

本実施の形態の多芯式熱変色性筆記具１は、前記蓋部５の取付部５４と摩擦部７の被取付部７１とを係合させることによって、摩擦部７と蓋部５との強固な取り付けが可能となり、摩擦時に摩擦部７が蓋部５から外れることを防止できる。 The multi-core thermochromic writing instrument 1 according to the present embodiment engages the attachment portion 54 of the lid portion 5 and the attached portion 71 of the friction portion 7, thereby firmly connecting the friction portion 7 and the lid portion 5. Mounting is possible, and it is possible to prevent the friction portion 7 from being detached from the lid portion 5 at the time of friction.

＜第２の実施の形態＞
本考案の第２の実施の形態を図３及び図４に示す。
本実施の形態の多芯式熱変色性筆記具１は、軸筒２内に複数本（具体的には２本）の筆記体３が前後方向に移動可能に収容されている。前記各々の筆記体３は、弾発体６（具体的には圧縮コイルスプリング）により、後方に付勢されている。 <Second Embodiment>
A second embodiment of the present invention is shown in FIGS.
In the multi-core thermochromic writing instrument 1 of the present embodiment, a plurality of (specifically, two) writing bodies 3 are accommodated in a shaft cylinder 2 so as to be movable in the front-rear direction. Each of the writing bodies 3 is urged rearward by an elastic body 6 (specifically, a compression coil spring).

（軸筒）
前記軸筒２は、先細状の円筒体からなる前軸２ａと、該前軸２ａの後端部と螺合または圧入により取り付けられる円筒状の後軸２ｂとからなる。前記前軸２ａの前端には、筆記体３のペン先３１が突出可能な前端孔２１が軸方向に貫設される。前記前軸２ａ及び後軸２ｂは、合成樹脂（例えば、ポリカーボネイト等）の射出成形により得られる。 (Shaft tube)
The shaft cylinder 2 includes a front shaft 2a formed of a tapered cylindrical body and a cylindrical rear shaft 2b attached to the rear end portion of the front shaft 2a by screwing or press-fitting. At the front end of the front shaft 2a, a front end hole 21 through which the pen tip 31 of the writing body 3 can protrude is provided in the axial direction. The front shaft 2a and the rear shaft 2b are obtained by injection molding of a synthetic resin (for example, polycarbonate).

前記後軸２ｂの後部の側壁には、複数本（具体的には２本）の前後方向に延びる細長状の窓孔２２が、径方向に貫設される。前記２本の窓孔２２は、互いに、軸線に対して対称の位置に形成される。また、前記後軸２ｂの後端部には、軸方向に貫通し且つ径方向外方に開口する開口部２３が形成される。前記開口部２３は、後軸２ｂの後端（即ち軸筒２の後端）において窓孔２２と連通され、それにより、窓孔２２後端が後方に切り欠かれ後方に開口されている。前記開口部２３を通して、操作体４が取り付けられた状態の筆記体３を、軸筒２内に挿入可能且つ軸筒２内から取り出し可能に構成される。 A plurality of (specifically, two) elongated window holes 22 extending in the front-rear direction are provided in the radial direction in the rear side wall of the rear shaft 2b. The two window holes 22 are formed at symmetrical positions with respect to the axis. In addition, an opening 23 that penetrates in the axial direction and opens outward in the radial direction is formed at the rear end of the rear shaft 2b. The opening 23 communicates with the window hole 22 at the rear end of the rear shaft 2b (that is, the rear end of the shaft cylinder 2), whereby the rear end of the window hole 22 is notched rearward and opened rearward. The writing body 3 with the operating body 4 attached thereto can be inserted into the shaft tube 2 and taken out from the shaft tube 2 through the opening 23.

また、前記後軸２ｂの窓孔２２の相互間の側壁内面には、前後方向に延びるリブよりなる係止壁部（図示せず）が形成され、前記係止壁部に、ペン先３１が突出した際の筆記体３の操作体４の後端が係止される。また、前記後軸２ｂの窓孔２２の相互間の側壁外面には、クリップ２５が設けられる。 Further, a locking wall portion (not shown) made of a rib extending in the front-rear direction is formed on the inner surface of the side wall between the window holes 22 of the rear shaft 2b, and a pen tip 31 is formed on the locking wall portion. The rear end of the operation body 4 of the writing body 3 when protruding is locked. Further, a clip 25 is provided on the outer surface of the side wall between the window holes 22 of the rear shaft 2b.

（蓋部）
前記後軸２ｂの後端部には、前記開口部２３を開閉自在にする蓋部５が回動自在に設けられる。前記蓋部５の一端部は、クリップ２５基部に、ヒンジ部５１により回動自在に接続される。前記蓋部５は、略前後方向に回動自在となる。前記蓋部５の前面には、当接壁部５２が形成される。前記当接壁部５２に、ペン先没入状態の筆記体３の後端に連結された各々の操作体４の後端が、当接される。尚、本考案において、前記当接壁部５２は、蓋部５の前面に形成される構成以外にも、軸筒２（後軸２ｂ）と一体に形成されてもよい。 (Cover)
At the rear end portion of the rear shaft 2b, a lid portion 5 that freely opens and closes the opening portion 23 is rotatably provided. One end of the lid 5 is pivotally connected to the base of the clip 25 by a hinge 51. The lid 5 is rotatable in a substantially front-rear direction. A contact wall 52 is formed on the front surface of the lid 5. The rear end of each operation body 4 connected to the rear end of the writing body 3 in the pen tip immersion state is in contact with the contact wall portion 52. In the present invention, the abutting wall portion 52 may be formed integrally with the shaft cylinder 2 (rear shaft 2b) in addition to the configuration formed on the front surface of the lid portion 5.

前記蓋部５の他端部の前面には、凹部または孔部よりなる係合部５３が設けられる。後軸２ｂの後端には、前記係合部５３と係合可能な突部よりなる被係合部２４が設けられる。前記係合部５３の内面には、内向突起が形成され、一方、前記被係合部２４の外面には、前記内向突起と乗り越え係止可能な外向突起が形成される。前記蓋部５は、弾性材料により形成される。 On the front surface of the other end portion of the lid portion 5, an engaging portion 53 including a concave portion or a hole portion is provided. At the rear end of the rear shaft 2b, an engaged portion 24 including a protrusion that can engage with the engaging portion 53 is provided. An inward projection is formed on the inner surface of the engaging portion 53, while an outward projection that can get over and engage with the inward projection is formed on the outer surface of the engaged portion 24. The lid 5 is made of an elastic material.

（摩擦部）
蓋部５の後面には、摩擦部７が一体に形成される。即ち、前記蓋部５及び摩擦部７は、同一の弾性材料からなる。前記摩擦部７は、後方に向かうに従い外径が小さくなる凸曲面状の表面を備える。尚、前記蓋部５は、交換可能なように、軸筒２のヒンジ部５１と着脱自在とすることもできる。 (Friction part)
A friction part 7 is integrally formed on the rear surface of the lid part 5. That is, the lid part 5 and the friction part 7 are made of the same elastic material. The friction part 7 includes a convex curved surface whose outer diameter decreases toward the rear. In addition, the said cover part 5 can also be made detachable with respect to the hinge part 51 of the axial cylinder 2 so that replacement | exchange is possible.

（筆記体）
前記各々の筆記体３は、ボールペンレフィルであり、前端にボールが回転可能に抱持されたボールペンチップ（即ちペン先３１）と、該ボールペンチップを前端に備え且つ後端が開口されたインキ収容管３２とからなる。前記インキ収容管３２の内部には、水性ゲルよりなる熱変色性インキと、インキの後端に配置され且つインキの消費に伴い前進する高粘度流体からなる追従体が充填される。 (Cursive)
Each of the writing bodies 3 is a ball-point pen refill, and includes a ball-point pen tip (that is, a pen tip 31) in which a ball is rotatably held at the front end, and an ink container having the ball-point pen tip at the front end and having an open rear end. A tube 32; The ink storage tube 32 is filled with a thermochromic ink made of an aqueous gel and a follower made of a high-viscosity fluid that is disposed at the rear end of the ink and moves forward as the ink is consumed.

前記ボールペンチップは、前端に回転可能に抱持されたボールを弾発体等により前方に付勢し、前端縁部の内面にボールを密接させる構成が採用される。また、ボールペンチップは、インキ収容管３２の前端開口部に圧入等により直接、取り付けてもよいが、本実施の形態ではペン先ホルダーを介してインキ収容管３２の前端開口部に固着される。 The ballpoint pen tip employs a configuration in which a ball held rotatably at the front end is urged forward by a projectile or the like, and the ball is brought into close contact with the inner surface of the front end edge. In addition, the ballpoint pen tip may be directly attached to the front end opening of the ink containing tube 32 by press fitting or the like, but in this embodiment, it is fixed to the front end opening of the ink containing tube 32 via the pen tip holder.

（操作体）
前記各々の筆記体３の後端（即ちインキ収容管３２の後端開口部）には、操作体４が取り付けられる。前記各々の操作体４は、後端部に形成され且つ軸筒２の窓孔２２から外部に突出する操作部４１と、該操作部４１の反対側に設けられる後側突出部４３と、該操作部４１の反対側の後側突出部４３の前方に設けられる前側突出部４２と、前端部に形成され且つインキ収容管３２の後端開口部に嵌入される嵌入部４４と、該嵌入部４４の後方に形成される鍔部４５とを備える。また、前記鍔部４５の前面には、弾発体６の後端が係止される。また、前記操作体４の両方の側面には抜け止め突起４６が形成される。前記抜け止め突起４６は窓孔２２の両方の側壁内面に係合可能である。 (Operation body)
The operation body 4 is attached to the rear end of each of the writing bodies 3 (that is, the rear end opening of the ink containing tube 32). Each of the operation bodies 4 includes an operation portion 41 formed at the rear end portion and projecting outside from the window hole 22 of the shaft cylinder 2, a rear side projection portion 43 provided on the opposite side of the operation portion 41, A front projecting portion 42 provided in front of the rear projecting portion 43 on the opposite side of the operation portion 41; a fitting portion 44 formed at the front end portion and fitted into the rear end opening of the ink containing tube 32; and the fitting portion 44 and a flange 45 formed behind 44. In addition, the rear end of the projectile 6 is locked to the front surface of the flange portion 45. Further, a retaining projection 46 is formed on both side surfaces of the operating body 4. The retaining projection 46 can be engaged with the inner surfaces of both side walls of the window hole 22.

前記各々の操作体４は、合成樹脂（例えば、ポリアセタール樹脂、ＡＢＳ樹脂等）の成形体からなる。前記各々の操作体４は、連結される筆記体３の内部（即ちインキ収容管３２内部）に収容されたインキの色と略同じ色に着色される。具体的には、前記操作体４の各々は、連結される筆記体３のインキ色と略同じ色に着色された合成樹脂の成形体からなる。 Each operation body 4 is formed of a molded body of a synthetic resin (for example, polyacetal resin, ABS resin, etc.). Each of the operation bodies 4 is colored in substantially the same color as the color of the ink stored in the connected writing body 3 (that is, in the ink storage tube 32). Specifically, each of the operation bodies 4 is formed of a synthetic resin molded body colored in substantially the same color as the ink color of the connected writing body 3.

筆記体３のペン先３１が没入状態のとき、その筆記体３に取り付けられた操作体４の後端部の衝止部４７は、蓋部５の前面に形成された当接壁部５２に当接される。一方、筆記体３のペン先３１が突出状態のとき、その筆記体３に取り付けられた操作体４の後端部は、軸筒２の内壁に形成された係止壁部に係止される。 When the pen point 31 of the writing body 3 is in an immersive state, the stopper 47 of the rear end portion of the operating body 4 attached to the writing body 3 is brought into contact with the abutting wall portion 52 formed on the front surface of the lid portion 5. Abutted. On the other hand, when the pen tip 31 of the writing body 3 is in a protruding state, the rear end portion of the operation body 4 attached to the writing body 3 is locked to a locking wall portion formed on the inner wall of the shaft tube 2. .

ペン先没入状態にある筆記体３の後端に連結された操作体４の前側突出部４２は、その操作体４の操作部４１を前方にスライド操作した際、先にペン先突出状態にある他の筆記体３の後端に連結された操作体４の後側突出部４３と当接され、他の筆記体３のペン先突出状態が解除される。 The front protruding portion 42 of the operating body 4 connected to the rear end of the writing body 3 in the pen tip immersing state is in a pen tip protruding state when the operating portion 41 of the operating body 4 is slid forward. The pendant protruding state of the other cursive body 3 is released by contacting the rear projecting portion 43 of the operating body 4 connected to the rear end of the other cursive body 3.

本実施の形態の多芯式熱変色性筆記具１は、蓋部５の外面に、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、弾性材料からなる摩擦部７を設けたことにより、摩擦部７を大きく形成でき、熱変色性インキによる大きな筆跡を摩擦によって迅速に熱変色させることができる。さらに、前記第１の考案の多芯式熱変色性筆記具１は、蓋部５の外面に弾性材料からなる摩擦部７を設けたことにより、開口部２３を開閉する際、摩擦部７を操作でき、そのとき、蓋部５の開閉操作時、摩擦部７と指とが滑ることを防止でき且つ指に痛みを感じることがなく、蓋部５に力を加えやすいため、蓋部５の操作が容易となる。 The multi-core thermochromic writing instrument 1 of the present embodiment is made of an elastic material capable of rubbing the handwriting of the thermochromic ink on the outer surface of the lid portion 5 and thermally changing the handwriting with frictional heat generated at that time. By providing the friction part 7, the friction part 7 can be formed large, and a large handwriting by the thermochromic ink can be rapidly discolored by friction. Further, the multi-core thermochromic writing instrument 1 of the first invention is provided with the friction part 7 made of an elastic material on the outer surface of the lid part 5, so that the friction part 7 is operated when the opening part 23 is opened and closed. At that time, when the lid 5 is opened and closed, the friction portion 7 and the finger can be prevented from slipping, the finger is not painful, and it is easy to apply force to the lid 5. Becomes easy.

本実施の形態の多芯式熱変色性筆記具１は、蓋部５と摩擦部７が一体に形成されることによって、部品点数を減少させ、安価に提供でき、且つ、摩擦時に摩擦部７が蓋部５から外れることがない。 The multi-core thermochromic writing instrument 1 of the present embodiment can be provided at a low cost by reducing the number of parts by integrally forming the lid portion 5 and the friction portion 7, and the friction portion 7 can be provided at the time of friction. It does not come off from the lid 5.

１ 多芯式熱変色性筆記具
２ 軸筒
２ａ 前軸
２ｂ 後軸
２１ 前端孔
２２ 窓孔
２３ 開口部
２４ 被係合部
２５ クリップ
３ 筆記体
３１ ペン先
３２ インキ収容管
４ 操作体
４１ 操作部
４２ 前側突出部
４３ 後側突出部
４４ 嵌入部
４５ 鍔部
４６ 抜け止め突起
５ 蓋部
５１ ヒンジ部
５２ 当接壁部
５３ 係合部
５４ 取付部
６ 弾発体
７ 摩擦部
７１ 被取付部
DESCRIPTION OF SYMBOLS 1 Multi-core type thermochromic writing instrument 2 Shaft cylinder 2a Front shaft 2b Rear shaft 21 Front end hole 22 Window hole 23 Opening part 24 Engagement part 25 Clip 3 Writing body 31 Pen tip 32 Ink storage pipe 4 Operation body 41 Operation part 42 Front projecting portion 43 Rear projecting portion 44 Fitting portion 45 Eave portion 46 Retaining protrusion 5 Lid portion 51 Hinge portion 52 Abutting wall portion 53 Engaging portion 54 Attaching portion 6 Ejector 7 Friction portion 71 Attached portion

Claims (3)

軸筒内に複数の筆記体を前後方向に移動可能に収容し、前記各々の筆記体の内部に熱変色性インキを収容し且つ前記各々の筆記体の前端に前記熱変色インキが吐出可能なペン先を備え、前記各々の筆記体の後端に操作体を取り付け、前記各々の操作体を弾発体により後方に付勢し、前記軸筒の側壁に軸方向に延びる複数の窓孔を径方向に貫設し、前記各々の窓孔から径方向外方に前記各々の操作体の操作部を突出させ、一つの操作部を窓孔に沿って前方にスライドさせることにより、その一つの操作体が取り付けられた筆記体のペン先を軸筒の前端孔から突出させるとともに、先に突出状態にあった他の筆記体のペン先を軸筒内に没入させ、前記軸筒の後端に、前記各々の窓孔を後方に開口させる開閉自在の開口部を設け、前記開口部を介して筆記体及び操作体を連結状態で軸筒内から取り外し可能且つ軸筒内に挿入可能に構成し、前記軸筒の後端部に、前記開口部を開閉自在とする蓋部を設けた多芯式熱変色性筆記具であって、前記蓋部の外面に、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、弾性材料からなる摩擦部を設けたことを特徴とする多芯式熱変色性筆記具。 A plurality of writing bodies are accommodated in the shaft cylinder so as to be movable in the front-rear direction, thermochromic ink is accommodated in each of the writing bodies, and the thermochromic ink can be discharged to the front end of each writing body. A pen tip is provided, an operating body is attached to a rear end of each writing body, each operating body is urged rearward by a resilient body, and a plurality of window holes extending in the axial direction are provided on a side wall of the shaft cylinder. By piercing in the radial direction, projecting the operation part of each operation body radially outward from each window hole, and sliding one operation part forward along the window hole, the one The pen tip of the writing body to which the operating body is attached protrudes from the front end hole of the shaft cylinder, and the pen tip of another writing body that has been in the protruding state is immersed in the shaft cylinder, and the rear end of the shaft cylinder Are provided with openable and closable openings for opening the respective window holes rearwardly, and through the openings. A multi-core structure in which the writing body and the operation body are connected to each other so that they can be removed from the shaft tube and inserted into the shaft tube, and a lid portion is provided at the rear end of the shaft tube so that the opening can be opened and closed. The thermochromic writing instrument is provided with a friction part made of an elastic material capable of rubbing the handwriting of the thermochromic ink and thermally discoloring the handwriting by frictional heat generated at that time on the outer surface of the lid part. A multi-core thermochromic writing instrument characterized by that. 蓋部の後面に取付部を形成し、摩擦部に被取付部を形成し、前記蓋部の取付部と前記摩擦部の被取付部とを係合させる請求項１記載の多芯式熱変色性筆記具。 The multi-core thermochromic according to claim 1, wherein an attachment portion is formed on a rear surface of the lid portion, an attachment portion is formed on the friction portion, and the attachment portion of the lid portion and the attachment portion of the friction portion are engaged. Sex writing instrument. 蓋部と摩擦部とが弾性材料により一体に形成される請求項１記載の多芯式熱変色性筆記具。 The multi-core thermochromic writing instrument according to claim 1, wherein the lid and the friction portion are integrally formed of an elastic material.
JP2012001354U 2012-03-12 2012-03-12 Multi-core thermochromic writing instrument Expired - Lifetime JP3175844U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012001354U JP3175844U (en) 2012-03-12 2012-03-12 Multi-core thermochromic writing instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012001354U JP3175844U (en) 2012-03-12 2012-03-12 Multi-core thermochromic writing instrument

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2009111571A Continuation JP2010260218A (en) 2009-04-30 2009-04-30 Multi-core type thermochromic writing utensil

Publications (1)

Publication Number Publication Date
JP3175844U true JP3175844U (en) 2012-06-07

Family

ID=48002852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012001354U Expired - Lifetime JP3175844U (en) 2012-03-12 2012-03-12 Multi-core thermochromic writing instrument

Country Status (1)

Country Link
JP (1) JP3175844U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007015275A (en) * 2005-07-08 2007-01-25 Pilot Ink Co Ltd Multiple lead writing utensil
WO2008105227A1 (en) * 2007-02-26 2008-09-04 The Pilot Ink Co., Ltd. Thermally changeable color writing tool
JP2008247025A (en) * 2007-03-05 2008-10-16 Pilot Ink Co Ltd Thermal color changing writing utensil, writing core body refill, and friction core body refill

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007015275A (en) * 2005-07-08 2007-01-25 Pilot Ink Co Ltd Multiple lead writing utensil
WO2008105227A1 (en) * 2007-02-26 2008-09-04 The Pilot Ink Co., Ltd. Thermally changeable color writing tool
JP2008247025A (en) * 2007-03-05 2008-10-16 Pilot Ink Co Ltd Thermal color changing writing utensil, writing core body refill, and friction core body refill

Similar Documents

Publication Publication Date Title
JP6756877B2 (en) Thermal discoloration writing instrument
JP2019130923A (en) Thermochromic writing instrument
JP5328554B2 (en) Thermochromic writing instrument
WO2011096357A1 (en) Writing tool
JP2010260218A (en) Multi-core type thermochromic writing utensil
JP2011037086A (en) Thermochromic writing utensil
JP5675015B2 (en) Thermochromic writing instrument
JP5784967B2 (en) Thermochromic writing instrument
JP5681857B2 (en) Thermochromic writing instrument
JP5603738B2 (en) Thermochromic writing instrument
JP5694836B2 (en) Thermochromic writing instrument
JP5969753B2 (en) Multi-core thermochromic writing instrument
JP5358471B2 (en) Thermochromic writing instrument
JP5698927B2 (en) Writing instrument
JP5813929B2 (en) Writing instrument
JP6081438B2 (en) Thermochromic writing instrument
JP6184767B2 (en) Thermochromic writing instrument
JP3175844U (en) Multi-core thermochromic writing instrument
JP5791946B2 (en) Thermochromic writing instrument
JP5603737B2 (en) Thermochromic writing instrument
JP2010260219A (en) Multi-core type thermochromic writing utensil
JP6440784B2 (en) Thermochromic writing instrument
JP2010260217A (en) Thermochromic writing utensil
JP2012232481A (en) Multi-core type thermochromic writing utensil

Legal Events

Date Code Title Description
R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150509

Year of fee payment: 3

A624 Registrability report (other person)

Free format text: JAPANESE INTERMEDIATE CODE: A624

Effective date: 20140626

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R323114

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term