JP2005161643A - Eraser support of mechanical pencil - Google Patents

Eraser support of mechanical pencil Download PDF

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JP2005161643A
JP2005161643A JP2003402392A JP2003402392A JP2005161643A JP 2005161643 A JP2005161643 A JP 2005161643A JP 2003402392 A JP2003402392 A JP 2003402392A JP 2003402392 A JP2003402392 A JP 2003402392A JP 2005161643 A JP2005161643 A JP 2005161643A
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eraser
support
eraser support
mechanical pencil
outer flange
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JP4424976B2 (en
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Kyokuichiro Yokosuka
極一郎 横須賀
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Pilot Precision KK
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Pilot Precision KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an eraser support 1 which is stable even when an eraser 2 is pushed against the surface of paper and also has no possibility that the eraser 2 comes off, in regard to the eraser support 1 provided in a mechanical pencil. <P>SOLUTION: An outer flange part 1A is formed in the eraser support 1 and a plurality of projecting parts 1B extending forward longitudinally are formed in the outer flange part 1A at equal intervals circumferentially. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、消しゴムの突出量が少なくなっても簡単に消しゴムを外すことができるシャープペンシルの消しゴム支えに関するものである。   The present invention relates to an eraser support for a mechanical pencil that can be easily removed even if the amount of protrusion of the eraser decreases.

従来、消しゴムをシャープペンシルに取り付けるために、消しゴムの中間部に消しゴムホルダーが設けられていた。しかも、手指のスリップを防止するために、消しゴムホルダーの段差筒の外周面に凹状と凸状を交互に周設して形成されていた。（特許文献１参照）
実開昭５６−１４９６９１号公報 Conventionally, in order to attach an eraser to a mechanical pencil, an eraser holder has been provided in the middle of the eraser. Moreover, in order to prevent the fingers from slipping, the outer peripheral surface of the step cylinder of the eraser holder is formed by alternately providing concave and convex shapes. (See Patent Document 1)
Japanese Utility Model Publication No. 56-149691

解決しようとする課題は、段差筒の外周面に凹状と凸状を交互に周設するために段差筒が長くなってしまうものであった。この段差筒が長くなると消しゴムを使用する時の安定性が悪く、強い力で消しゴムを紙面に押し付けると消しゴムが外れてしまう恐れがあった。   The problem to be solved is that the step cylinder becomes long because the concave and convex shapes are alternately provided on the outer peripheral surface of the step cylinder. If this step cylinder is long, the stability when using the eraser is poor, and if the eraser is pressed against the paper with a strong force, the eraser may come off.

本発明は、シャープペンシルに設けられる消しゴム支えにおいて、消しゴム支えに外鍔部を形成し、この外鍔部に長手方向後方に伸びた突部を形成したことを第１の要旨とする。   The first gist of the present invention is that, in the eraser support provided on the mechanical pencil, an outer flange portion is formed on the eraser support, and a protrusion extending rearward in the longitudinal direction is formed on the outer flange portion.

また、外鍔部に形成する突部を円周方向等間隔に複数形成したことを第２の要旨とする。   A second gist is that a plurality of protrusions formed on the outer flange portion are formed at equal intervals in the circumferential direction.

本発明のシャープペンシルは、消しゴム支えの外鍔部に突部を形成することにより外鍔部が短くなり、シャープペンシルに設けた消しゴムを紙面に押し付けても安定しており、消しゴムが外れる恐れがない。   In the mechanical pencil of the present invention, the outer flange portion is shortened by forming a protrusion on the outer flange portion of the eraser support, and even if the eraser provided on the mechanical pencil is pressed against the paper surface, the eraser may be removed Absent.

また、消しゴムの突出量が少なくなっても外鍔部の段差部に爪を立てて消しゴム支えを外すことができるので、簡単に消しゴムを外すことができる。   Further, even if the eraser protrudes less, the eraser support can be removed by raising a nail on the stepped portion of the outer collar, so that the eraser can be easily removed.

消しゴム支えの外鍔部に突部を形成することにより、短い外鍔部でも確実に外すことができる消しゴム支えを実現した。   By forming protrusions on the outer flange of the eraser support, we have realized an eraser support that can be reliably removed even with a short outer flange.

図１、図２及び図３により本発明の実施例１を説明する。尚、図１の左側を前方とし右側を後方とする。合成樹脂製の消しゴム支え１の後部に外鍔部１Ａを形成し、この外鍔部１Ａの後部はテーパー面となっているが後端は平坦に形成する。外鍔部１Ａの前部には長手方向前方に伸びた突部１Ｂを円周方向等間隔に４個形成する。更に、消しゴム支え１の中間部外周面１Ｃに突起１Ｄが形成される。また、消しゴム支え１の内面には内方突起１Ｅが形成され、内方突起１Ｅは前方から後方に行くに従って内方に突出する傾斜面が形成され、その後端は垂直面に形成される。この内方突起１Ｅは１個でも良いが、好ましくは２個、３個あるいは４個といった複数個を円周方向等間隔に形成する。   Embodiment 1 of the present invention will be described with reference to FIGS. In addition, let the left side of FIG. 1 be the front, and let the right side be the back. The outer flange portion 1A is formed at the rear portion of the eraser support 1 made of synthetic resin. The rear portion of the outer flange portion 1A has a tapered surface, but the rear end is formed flat. Four protrusions 1B extending forward in the longitudinal direction are formed on the front portion of the outer flange portion 1A at equal intervals in the circumferential direction. Further, a protrusion 1D is formed on the outer peripheral surface 1C of the intermediate portion of the eraser support 1. Further, an inner protrusion 1E is formed on the inner surface of the eraser support 1, and the inner protrusion 1E is formed with an inclined surface that protrudes inward from the front to the rear, and its rear end is formed on a vertical surface. The number of the inward protrusions 1E may be one, but preferably a plurality of two, three, or four inward protrusions are formed at equal intervals in the circumferential direction.

この消しゴム支え１の前方から消しゴム２を挿入し、消しゴム２の後端を消しゴム支え１から適宜突出させる。消しゴム２は、前方に対しては消しゴム支え１の内方突起１Ｅの後端に係止され移動できないが、後方に対しては内方突起１Ｅの傾斜面を滑って移動することができる。   The eraser 2 is inserted from the front of the eraser support 1, and the rear end of the eraser 2 is appropriately projected from the eraser support 1. The eraser 2 is locked to the rear end of the inward projection 1E of the eraser support 1 with respect to the front and cannot move, but it can slide on the inclined surface of the inward projection 1E with respect to the rear.

上記消しゴム支え１は、図３に示したように、一般的なノック式シャープペンシルの芯タンク３に装着して使用する。この時、消しゴム支え１の突起１Ｄが芯タンク３の内面に圧接され、芯タンク３に適度の摩擦力で嵌合する。また、消しゴム支え１の突部１Ｂの前端が芯タンク３の後端に当接する。   As shown in FIG. 3, the eraser support 1 is used by being attached to a core tank 3 of a general knock type mechanical pencil. At this time, the protrusion 1D of the eraser support 1 is pressed against the inner surface of the lead tank 3, and is fitted to the lead tank 3 with an appropriate frictional force. Further, the front end of the protrusion 1 </ b> B of the eraser support 1 contacts the rear end of the lead tank 3.

芯タンク３に芯を補充する場合には、消しゴム支え１を外して芯を挿入するが、消しゴム２の突出量が少なくなった場合には、消しゴム支え１の外鍔部１Ａに形成された段差部１Ｆに爪を掛けて消しゴム２を取り出すことができるので、簡単に取り出すことができる。   When the lead tank 3 is refilled with the lead, the eraser support 1 is removed and the lead is inserted, but when the amount of protrusion of the eraser 2 decreases, the step formed on the outer flange portion 1A of the eraser support 1 Since the eraser 2 can be taken out by putting a nail on the part 1F, it can be taken out easily.

また、消しゴム２を突出させる場合には、前方より消しゴム２を押すことにより消しゴム２が消しゴム支え１内を後方に移動し、消しゴム支え１の後端より突出させることができる。   Further, when the eraser 2 is protruded, the eraser 2 can be moved backward in the eraser support 1 by pushing the eraser 2 from the front and protrude from the rear end of the eraser support 1.

消しゴムの突出量が少ない場合でも確実に消しゴム支えを外すことができる。   Even if the eraser has a small amount of protrusion, the eraser support can be reliably removed.

本発明の消しゴム支えを示す正面図である。（実施例１）It is a front view which shows the eraser support of this invention. (Example 1) 本発明の消しゴム支えを示す断面図である。（実施例１）It is sectional drawing which shows the eraser support of this invention. (Example 1) 本発明の消しゴム支えをシャープペンシルに取り付けた状態を示す断面図である。（実施例１）It is sectional drawing which shows the state which attached the eraser support of this invention to the mechanical pencil. (Example 1)

符号の説明Explanation of symbols

１ 消しゴム支え
１Ａ 消しゴム支え１の外鍔部
１Ｂ 消しゴム支え１の突部 DESCRIPTION OF SYMBOLS 1 Eraser support 1A Outer part of eraser support 1 1B Projection of eraser support 1

Claims (2)

シャープペンシルに設けられる消しゴム支えにおいて、消しゴム支えに外鍔部を形成し、この外鍔部に長手方向前方に伸びた突部を形成したことを特徴とするシャープペンシルの消しゴム支え。   An eraser support for a mechanical pencil, wherein an eraser support is provided on the mechanical pencil, and an outer collar portion is formed on the eraser support, and a protrusion extending forward in the longitudinal direction is formed on the outer collar portion. 外鍔部に形成する突部を円周方向等間隔に複数形成したことを特徴とする請求項１記載のシャープペンシルの消しゴム支え。   2. The mechanical pencil eraser support according to claim 1, wherein a plurality of protrusions formed on the outer collar portion are formed at equal intervals in the circumferential direction.
JP2003402392A 2003-12-02 2003-12-02 Mechanical pencil eraser support Expired - Lifetime JP4424976B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003402392A JP4424976B2 (en) 2003-12-02 2003-12-02 Mechanical pencil eraser support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003402392A JP4424976B2 (en) 2003-12-02 2003-12-02 Mechanical pencil eraser support

Publications (2)

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JP2005161643A true JP2005161643A (en) 2005-06-23
JP4424976B2 JP4424976B2 (en) 2010-03-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9004792B2 (en) 2011-12-29 2015-04-14 Sanford, L.P. Eraser cap assembly for writing instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9004792B2 (en) 2011-12-29 2015-04-14 Sanford, L.P. Eraser cap assembly for writing instrument

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