JP2002347385A - Mechanical pencil - Google Patents
Mechanical pencilInfo
- Publication number
- JP2002347385A JP2002347385A JP2001160334A JP2001160334A JP2002347385A JP 2002347385 A JP2002347385 A JP 2002347385A JP 2001160334 A JP2001160334 A JP 2001160334A JP 2001160334 A JP2001160334 A JP 2001160334A JP 2002347385 A JP2002347385 A JP 2002347385A
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- slider
- lead
- core
- rear end
- 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.)
- Withdrawn
Links
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、残芯を極力小としたシ
ャープペンシルの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a mechanical pencil with a minimum residual core.
【０００２】[0002]
【従来の技術】図６は従来のシャープペンシルを示して
いる。図に示すように、軸筒１２の先方には軸継ぎ手１
４を介してチャック１６が把持部外周に締め具１７を嵌
装して設置され、チャック１６の後端に固着した芯ケー
ス１５と軸筒１２との間に附勢されたスプリング１９に
よりチャック１６が締め具１７で締め付けられて供給芯
１１を把持している。また軸筒１２の先端に取付けられ
た口先部１３の先端にはスライダー１８が固定され、そ
のスライダー１８は、芯ガイド軸部１８ａの前方に先端
パイプ１８ｂが、後方にゴム等の弾性材よりなる保持チ
ャック１８ｃが固定されて、残芯１０は保持チャック１
８ｃを貫通して先端パイプ１８ｂより突出している。こ
の状態から、ノックしてチャック１６を前進するとチャ
ック１６が締め具１７で締め付けられているので供給芯
１１は把持された状態で前進する。更に前進すると締め
具１７が口先部１３の段部１３ａに当接してチャックの
みが前進するので芯の把持が解除され、芯の前端が残芯
１０の後端に当接する。その状態からノックを解除する
と芯が停止した状態でチャックが後退するが、チャック
の把持部が締め具１７に係合し始めた時点から芯に摩擦
係合して、芯を若干後退させた状態で把持が完了する。
即ち、残芯１０の後端がチャック１６の把持部から外れ
た場合、つぎのノックで供給芯１１の先端が残芯１０の
後端に当接するが、供給芯１１の前端が保持チャック１
８ｃに係合されていない為に、チャック１６の後退時に
チャックが締め具１７で締め付けられるやや手前で芯が
チャックに係合されて芯を若干後退させてしまい、残芯
１０の後端と供給芯１１の間に隙間２０が生じてしま
う。従って、残芯１０の前端に筆圧をかけると隙間分芯
潜りを生じる。その状態を起こすと筆感が悪く、しばら
くの間はノックの度に芯潜りを繰り返す。従って、通常
はノックを繰り返して残り分の芯を吐き出してしまう場
合が多い。その場合、チャック把持部の略前端と先端パ
イプの前端迄の長さが残芯として無駄となる問題があ
る。その長さは設計都合で異なるが、通常は７ｍｍ〜１
２ｍｍ程度である。また我慢して使う場合でも残芯の後
端が保持チャックから外れた位置に前進すると芯は先端
パイプの前端から脱落してしまう。2. Description of the Related Art FIG. 6 shows a conventional mechanical pencil. As shown in FIG.
A chuck 16 is mounted on the outer periphery of the gripping part with a fastener 17 fitted thereto, and the chuck 16 is biased between a core case 15 fixed to the rear end of the chuck 16 and the barrel 12 by a spring 19. Are gripped by the fastener 17 to grip the supply core 11. A slider 18 is fixed to a tip of a mouth portion 13 attached to a tip of the barrel 12. The slider 18 has a tip pipe 18 b in front of a core guide shaft 18 a and a rear pipe made of an elastic material such as rubber. The holding chuck 18c is fixed, and the residual core 10 is
8c and protrudes from the tip pipe 18b. From this state, when the chuck 16 is knocked forward and the chuck 16 is moved forward, the supply core 11 is moved forward while being gripped since the chuck 16 is fastened by the fastener 17. When the fastener further advances, the fastener 17 comes into contact with the step portion 13a of the mouth portion 13 and only the chuck advances, so that the gripping of the lead is released, and the front end of the lead contacts the rear end of the remaining lead 10. When the knock is released from that state, the chuck retracts with the lead stopped, but the frictional engagement with the lead is started when the gripping portion of the chuck starts to engage with the fastener 17, and the lead is slightly retracted. The grip is completed.
That is, when the rear end of the remnant core 10 comes off the gripping portion of the chuck 16, the leading end of the supply core 11 abuts on the rear end of the remnant core 10 in the next knock, but the front end of the supply core 11 is held by the holding chuck 1.
8c, when the chuck 16 is retracted, the chuck is fastened with the fastener 17 slightly before the lead is engaged with the chuck to slightly retract the lead. A gap 20 is created between the cores 11. Accordingly, when writing pressure is applied to the front end of the remnant core 10, the core retreats by a gap. When this occurs, the feeling of writing is poor, and for a while, it repeatedly goes under the core every time it is knocked. Therefore, in many cases, knocking is repeated and the remaining core is discharged. In this case, there is a problem that the length between the substantially front end of the chuck holding portion and the front end of the front end pipe is wasted as a residual core. The length varies depending on the design convenience, but is usually 7 mm to 1 mm.
It is about 2 mm. In addition, even when used with patience, when the rear end of the residual core advances to a position outside the holding chuck, the core falls off the front end of the distal end pipe.
【０００３】また軸筒の前端に口先部が設けられ、軸筒
内に芯ケースと、この芯ケースの前端部に把持部外周に
締め具が被嵌された後方チャックがスプリングによって
前後動可能に設けられ、この後方チャックの前方に継ぎ
手を介して連動するように前方チャックが設けられて、
その前方チャックの把持部が口先部の前端孔に係合され
て芯が把持されるように構成されたトップチャックある
いはダブルチャックと呼ばれるシャープペンシルが知ら
れている。この場合、前方チャックには略１ｍｍの長さ
の残芯が把持可能であり、芯の無駄がない。しかしなが
ら、構造が複雑なので低単価のシャープペンシルとして
提供しにくい問題がある。また先端がチャックと成って
いるために、定規に当てて線引きする場合などにしずら
い問題がある。A tip is provided at the front end of the barrel, and a core case and a rear chuck having a front end of the core case fitted with a fastener on the outer periphery of a gripping portion are movable back and forth by a spring. A front chuck is provided so as to interlock with a front of the rear chuck via a joint,
There has been known a mechanical pencil called a top chuck or a double chuck in which a grip portion of the front chuck is engaged with a front end hole of a mouth portion to grip a core. In this case, the front chuck can hold a residual core having a length of about 1 mm, and there is no waste of the core. However, there is a problem that it is difficult to provide a low-priced mechanical pencil due to its complicated structure. In addition, since the tip is formed as a chuck, there is a problem that is difficult when a wire is drawn against a ruler.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、残芯量を極
端に短くして無駄をなくすと共に、使い勝手が良く、且
つ低単価なシャープペンシルの提供を可能とする。SUMMARY OF THE INVENTION The present invention makes it possible to provide a mechanical pencil that is extremely easy to use and low in unit price while reducing waste by extremely reducing the amount of residual core.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記課題を達
成する為に以下の構成を有する。請求項１に記載のシャ
ープペンシルは、軸筒の前方に配設されたチャックの前
後動で芯を把持し、且つ芯を繰り出すように成したシャ
ープペンシルに於いて、軸筒の前端に取付けられた口先
部の内孔に先端部が口先部の前端から突出された状態に
嵌挿されるスライダーの内孔部略前端に保持チャックが
設けられ、スライダーの後退位置で、前記口先部の内孔
周面とスライダー外周面との間でスライダーの前進が阻
止されるように係合されると共に、チャックの後退位置
で、スライダーの略後端に設けた後方の係止部と芯ケー
スの前方に設けた係止部との間が係止され、またその状
態からチャックが前進して、締め具が口先部の段部に当
接するまで前記係止が解除され、チャックが更にやや前
進した状態で、スライダーの略後端に設けた前方の係止
部と芯ケースの前方に設けた係止部が係止して、チャッ
クの更なる前進と共にスライダーが共に前進し、最前進
した状態からチャックを後退させた時に、再びスライダ
ーの後端に設けた後方の係止部と芯ケースの前方に設け
た係止部との間が係止されて、チャックと共にスライダ
ーが連動して後退するように構成されてなる。The present invention has the following arrangement to achieve the above object. A mechanical pencil according to claim 1, wherein the mechanical pencil is gripped by a front-rear movement of a chuck disposed in front of the barrel, and is drawn out of the core. The mechanical pencil is attached to a front end of the barrel. A holding chuck is provided at a substantially front end of an inner hole portion of the slider which is inserted into the inner hole of the lip portion such that a tip portion of the lip portion projects from the front end of the lip portion. Between the outer surface of the slider and the outer peripheral surface of the slider so as to prevent the slider from moving forward, and at the retracted position of the chuck, provided at a rear locking portion provided at substantially the rear end of the slider and at the front of the lead case. In this state, the chuck is moved forward, the chuck is advanced from that state, and the lock is released until the fastener comes into contact with the step of the lip portion, and the chuck is further advanced, The front of the slider When the stop part and the locking part provided in front of the lead case are locked, the slider moves forward with the further advancement of the chuck, and when the chuck is retracted from the most advanced state, it is provided again at the rear end of the slider. The rear locking portion is locked between the locking portion provided in front of the lead case and the slider is moved backward together with the chuck.
【０００６】[0006]
【実施例】実施例について図面を参照して説明すると、
図１は本発明の実施例に基づくノック式シャープペンシ
ルであり、図２に示すように、チャック６はその先端芯
把持部外周に締め具８を嵌装した後に、締め具８の後端
を軸筒１の軸心孔の前端近傍に設けられた段部１ｂに当
接させた状態で軸筒１の軸心孔に挿通されて、チャック
６後端の係止部６ａが芯ケース３前端の軸部３ａに設け
た連結孔に係止されている。その際、芯ケース３前方に
設けられた鍔状の段部３ｂと軸筒１の段部１ｂとの間に
スプリング９がチャック６を後方に引き込むように敷設
される。また前記鍔状の段部３ｂの径方向所要箇所に突
部３ｃが設けられ、またチャック６の前方部は拡縮可能
に二つ割りあるいは三つ割の軸部で構成されている。ま
た前記軸筒１の段部１ｂには、軸筒の内壁よりの所要箇
所に、後述するスライダー７の片部７ｄを貫通するスリ
ット１ｃが穿設されている。Embodiments will be described with reference to the drawings.
FIG. 1 is a knock mechanical pencil based on an embodiment of the present invention. As shown in FIG. The shaft 6 is inserted into the shaft hole of the shaft tube 1 in a state of contact with a step 1 b provided near the front end of the shaft hole of the shaft tube 1, and the locking portion 6 a at the rear end of the chuck 6 is moved to the front end of the core case 3. Of the shaft 3a. At this time, a spring 9 is laid between the flange-shaped step portion 3b provided in front of the core case 3 and the step portion 1b of the barrel 1 so as to pull the chuck 6 backward. A protrusion 3c is provided at a required position in the radial direction of the flange-shaped step 3b, and a front portion of the chuck 6 is formed of a split or split shaft so as to be expandable and contractible. Further, a slit 1c is formed in the step portion 1b of the shaft cylinder 1 at a required position from an inner wall of the shaft cylinder so as to penetrate a piece 7d of a slider 7 described later.
【０００７】スライダー７は、先端パイプ７ａの内孔部
略前端に芯を挿通し適宜摩擦係合するゴム等の保持チャ
ック７ｂが固定され、その後端に略当接した状態で芯ガ
イド軸７ｃの前方部が先端パイプ７ａの内孔に固定され
てなる。また芯ガイド軸７ｃの後方には、筒状部から所
要数の片部７ｄが後方に向かって延設されており、また
片部７ｄの略前端には窓部７ｆが穿設され、略後端には
窓部７ｇが穿設されている。また更に、芯ガイド軸７ｃ
の筒状部７ｈ外周に、ゴムやバネなどの弾性体からなる
係合部材７ｅが設けられている。The slider 7 has a holding chuck 7b made of rubber or the like, which is inserted into a substantially front end of an inner hole portion of a front end pipe 7a and is frictionally engaged with the center, and is fixed to a rear end of the center guide shaft 7c. The front part is fixed to the inner hole of the tip pipe 7a. A required number of pieces 7d extend rearward from the cylindrical portion behind the core guide shaft 7c, and a window 7f is formed substantially at the front end of the piece 7d to form a window 7f. A window 7g is formed at the end. Furthermore, the core guide shaft 7c
An engagement member 7e made of an elastic body such as rubber or a spring is provided on the outer periphery of the cylindrical portion 7h.
【０００８】またスライダー７の片部７ｄの略前端に設
けられた窓部７ｆに締め具８に設けられた突部８ａを嵌
挿させると共に、片部７ｄが軸筒の段部１ｂに設けられ
たスリット１ｃを貫通して、片部７ｄの略後端に設けら
れた窓部７ｇの後面（スライダーの略後端に設けた後方
の係止部）に前記芯ケース３に設けられた突部３ｃを係
止させた状態となし、軸筒１前端の軸部１ａに螺合等の
手段によって口先部２が取付けられ、口先部２の孔部２
ｃに先端パイプ７ａが口先部２の前端から突出された状
態に嵌挿される。またその時、スライダー７は、その筒
状部７ｈに設けられた係合部材７ｅが口先部２の係合壁
２ａとの間に摩擦係合して固定された状態を維持可能と
する。A projection 8a provided on the fastener 8 is fitted into a window 7f provided substantially at the front end of the piece 7d of the slider 7, and the piece 7d is provided on the step 1b of the shaft cylinder. A projection provided on the core case 3 on the rear surface of a window 7g provided substantially at the rear end of the piece 7d (a rear locking portion provided substantially at the rear end of the slider) through the slit 1c. 3c is locked, and the tip 2 is attached to the shaft 1a at the front end of the barrel 1 by means such as screwing.
The front end pipe 7a is inserted into c so as to protrude from the front end of the mouth portion 2. At that time, the slider 7 can maintain a state in which the engagement member 7e provided on the cylindrical portion 7h is frictionally engaged with the engagement wall 2a of the mouth portion 2 and fixed.
【０００９】またその状態から芯ケース３と共にチャッ
ク６が前進して、前記片部７ｄの略後端に設けられた窓
部７ｇの後面から芯ケース３に設けられた突部３ｃが離
れて相互の係止が解除され、締め具８の突部８ａの前端
が口先部２の係合壁２ａの後端に設けられた段部２ｂに
当接し、チャック６が更にやや前進した状態で前記窓部
７ｇの前面（スライダーの略後端に設けた前方の係止
部）に芯ケース３に設けられた突部３ｃが当接して、チ
ャック６の更なる前進と共にスライダー７の筒状部７ｈ
に設けられた係合部材７ｅと口先部２の係合壁２ａとの
係合が解除されてスライダー７が共に前進し、最前進し
た状態からチャック６を後退させた時に、再び片部７ｄ
の略後端に設けられた窓部７ｇの後面に芯ケース３に設
けられた突部３ｃが係止されて、チャック６と共にスラ
イダー７が連動して後退する。In this state, the chuck 6 moves forward together with the lead case 3, and the projection 3c provided on the lead case 3 is separated from the rear surface of the window 7g provided substantially at the rear end of the piece 7d. Is released, the front end of the projection 8a of the fastener 8 comes into contact with the step 2b provided at the rear end of the engagement wall 2a of the lip 2, and the window 6 is further advanced with the chuck 6 further advanced. The protrusion 3c provided on the lead case 3 abuts on the front surface of the portion 7g (the front locking portion provided substantially at the rear end of the slider).
When the engagement between the engaging member 7e provided on the front end and the engaging wall 2a of the lip portion 2 is released and the slider 7 advances together, and the chuck 6 is retracted from the most advanced state, the one-side portion 7d is again
The protrusion 3c provided on the lead case 3 is locked to the rear surface of the window 7g provided substantially at the rear end of the slider 6, and the slider 7 moves back together with the chuck 6 in conjunction.
【００１０】ところで、前記実施例において、スライダ
ーは、先端パイプの内孔部略前端に芯を挿通し適宜摩擦
係合するゴム等の保持チャックを固定して設けたが、無
論先端パイプを弾性に優れた樹脂成形品となして、芯と
摩擦係合する片状の保持チャック部を先端パイプと一体
に形成することも可能である。また前記実施例におい
て、先端パイプの内孔に芯ガイド軸の前方部を固定して
設けたが、無論先端パイプと芯ガイド軸は弾性に優れた
一体の樹脂成形品となすことも可能である。また更に、
前記実施例において、スライダー７の芯ガイド軸７ｃの
筒状部７ｈ外周に、ゴムやバネなどの弾性体からなる係
合部材７ｅを設けて口先部２の係合壁２ａとの間で摩擦
係合するように設けているが、片部７ｄあるいは筒状部
７ｈの外周に容易に弾性変位する部位を一体に形成する
ことも、また相互間に容易に弾性変位する部材を介在さ
せることも可能である。In the above-mentioned embodiment, the slider is provided with a holding chuck made of rubber or the like which is inserted through a core substantially at the front end of the inner hole portion of the tip pipe and is appropriately frictionally engaged. As an excellent resin molded product, it is also possible to integrally form the one-sided holding chuck portion that frictionally engages with the core with the tip pipe. Further, in the above-described embodiment, the front portion of the core guide shaft is fixedly provided in the inner hole of the distal pipe, but it is a matter of course that the distal pipe and the core guide shaft may be formed as an integral resin molded product having excellent elasticity. . Moreover,
In the above-described embodiment, an engagement member 7e made of an elastic body such as rubber or a spring is provided on the outer periphery of the cylindrical portion 7h of the core guide shaft 7c of the slider 7 to provide frictional engagement with the engagement wall 2a of the lip portion 2. Although it is provided so as to fit together, an easily elastically displaceable portion can be integrally formed on the outer periphery of the piece portion 7d or the cylindrical portion 7h, or a member that easily elastically displaces can be interposed between them. It is.
【００１１】[0011]
【作用】図１及び図２に示す状態より、ノックカバー４
のノックとその解除を繰り返すことによって、通常のシ
ャープペンシルと同様に芯ケース３と連動してチャック
６が前後動して芯が先端パイプ７ａの前端から繰り出さ
れる。即ち、スライダー７の係合部材７ｅと口先部２の
係合壁２ａとの係合力は保持チャック７ｂと芯との摩擦
係合力より強く設定されており、従って、芯の前進によ
る保持チャック７ｂへの摩擦係合力に対してスライダー
７は固定された状態を保ち、その状態からチャック６が
前進して、締め具８の突部８ａの前端が口先部２の段部
２ｂに当接し、更にやや前進した状態でスライダー７の
窓部７ｇの前面に芯ケース３に設けられた突部３ｃが当
接して、芯ケース３及びチャック６の更なる前進と共に
スライダー７の前記係合が外れて、チャック６とスライ
ダー７が共に前進する。またチャック６を最前進した状
態から後退させた時に、再びスライダー７の後端に設け
た窓部７ｇの前面（スライダーの略後端に設けた前方の
係止部）に芯ケース３に設けられた突部３ｃが当接し
て、チャック６と共にスライダー７が連動して後退す
る。The knock cover 4 is moved from the state shown in FIGS.
Is repeated and the chuck 6 is moved back and forth in conjunction with the lead case 3 like a normal mechanical pencil, and the lead is fed out from the front end of the tip pipe 7a. That is, the engaging force between the engaging member 7e of the slider 7 and the engaging wall 2a of the lip portion 2 is set to be stronger than the frictional engaging force between the holding chuck 7b and the core. The slider 7 keeps a fixed state against the frictional engagement force of the above, from which the chuck 6 moves forward, the front end of the projection 8a of the fastener 8 comes into contact with the step 2b of the lip portion 2, and a little more. In the forward state, the projection 3c provided on the lead case 3 abuts against the front surface of the window 7g of the slider 7, and the further engagement of the lead 7 and the chuck 6 disengages the slider 7 with the lead case 3 and the chuck 7. 6 and the slider 7 move forward together. When the chuck 6 is retracted from the most advanced state, the chuck 7 is again provided on the front surface of the window 7g provided at the rear end of the slider 7 (front locking portion provided at substantially the rear end of the slider). The protrusion 3c abuts, and the slider 7 moves back together with the chuck 6 in conjunction.
【００１２】筆記と共に芯が消耗すると、芯の後端がチ
ャック６の芯把持部から外れ、残芯となる。また芯ケー
ス３から次の芯が供給芯としてチャック６に送られる。
図４はスライダー７内に残芯１０が位置し、その後方に
チャック６に把持された供給芯１１が位置した状態を示
している。上述したように、この状態でチャック６が前
進するとスライダー７は固定された状態で締め具８の前
端が口先部２の段部２ｂに当接してチャックの芯把持が
解除される間、芯が先端パイプ７ａの前端から突出す
る。このとき、残芯１０の後端に供給芯１１の前端が当
接した状態にある。また上述したように、チャック６を
最前進した状態から後退させた時に、再びスライダー７
の後端に設けた窓部７ｇの前面に芯ケース３に設けられ
た突部３ｃが当接して、チャック６と共にスライダー７
が連動して後退する。このとき、チャック６の芯把持部
は芯を開放した状態にあって、残芯の後端に供給芯の前
端が当接した状態を維持している。更にチャック６が後
退すると、チャックは芯把持部に締め具８が係合しなが
ら後退する。しかしながら、チャック６とスライダー７
は一体となって後退するので残芯１０の後端と供給芯１
１の前端は当接した状態に維持され、従って、残芯１０
の後端が保持チャックから外れるまでは芯の前端に筆圧
をかけても芯潜りが無く筆感が良い。また保持チャック
を極力先端パイプの内孔部前端に設けることによって筆
記不可となる残芯の長さを短くすることができる。When the lead is consumed with writing, the trailing end of the lead comes off the lead gripping portion of the chuck 6 and becomes a residual lead. The next lead is sent from the lead case 3 to the chuck 6 as a supply lead.
FIG. 4 shows a state in which the residual core 10 is located in the slider 7 and the supply core 11 held by the chuck 6 is located behind the residual core 10. As described above, when the chuck 6 moves forward in this state, while the slider 7 is fixed, the front end of the fastener 8 abuts the step 2b of the lip portion 2 and the core is released while the chuck is released. It protrudes from the front end of the tip pipe 7a. At this time, the front end of the supply core 11 is in contact with the rear end of the residual core 10. As described above, when the chuck 6 is retracted from the most advanced state, the slider 7 is again moved.
The protrusion 3c provided on the core case 3 abuts on the front surface of the window 7g provided at the rear end of the
Retreats in conjunction. At this time, the core holding portion of the chuck 6 is in a state where the core is opened, and the state where the front end of the supply core is in contact with the rear end of the remaining core is maintained. When the chuck 6 is further retracted, the chuck is retracted while the fastener 8 is engaged with the core gripping portion. However, the chuck 6 and the slider 7
Are retracted as a unit, so that the rear end of the residual core 10 and the supply core 1
1 is maintained in abutting condition, so that the residual core 10
Until the rear end of the lead comes off the holding chuck, even if pressure is applied to the front end of the lead, the lead feels good without penetrating the lead. In addition, by providing the holding chuck at the front end of the inner hole of the front end pipe as much as possible, the length of the unwritable residual core can be shortened.
【００１３】[0013]
【発明の効果】本発明の構成及び作用は以上の如くであ
り、筆記不可となる残芯が極端に短くでき芯の無駄がな
いので経済的である。又、僅かな残芯を吐き出す為に少
ないノックで行うことができ煩わしさが極端に軽減で
き、使い勝手が良く、且つ低単価なシャープペンシルの
提供が可能となる。The construction and operation of the present invention are as described above, and the remaining core, which is not writable, is extremely short, and the core is not wasted. In addition, since a small amount of residual core is discharged, it can be performed with a small amount of knock, so that it is possible to significantly reduce inconvenience, provide a user-friendly mechanical pencil with low unit cost.
【図１】本発明の実施例であるシャープペンシルの縦半
断面図を示している。FIG. 1 is a longitudinal half sectional view of a mechanical pencil according to an embodiment of the present invention.
【図２】本発明のシャープペンシルの要部を拡大して示
した半断面図で、スライダーが後退した状態を示してい
る。FIG. 2 is an enlarged half sectional view showing a main part of the mechanical pencil of the present invention, showing a state in which the slider is retracted.
【図３】本発明のシャープペンシルの要部を拡大して示
した半断面図で、スライダーが最前進した状態を示して
いる。FIG. 3 is an enlarged half sectional view showing a main part of the mechanical pencil of the present invention, showing a state in which the slider is moved forward most.
【図４】本発明のシャープペンシルの要部を拡大して示
した半断面図で、スライダーが後退した状態で且つ芯が
挿通された状態を示している。FIG. 4 is an enlarged half sectional view showing a main part of the mechanical pencil of the present invention, showing a state where the slider is retracted and a core is inserted.
【図５】本発明のシャープペンシルの要部を拡大して示
した半断面図で、スライダーが最前進した状態で且つ芯
が挿通された状態を示している。FIG. 5 is an enlarged half sectional view showing a main part of the mechanical pencil according to the present invention, showing a state in which the slider is moved forward most and a core is inserted.
【図６】従来例のシャープペンシルの要部を拡大して示
した半断面図で、芯が挿通された状態を示している。FIG. 6 is an enlarged half sectional view showing a main part of a conventional mechanical pencil, and shows a state where a lead is inserted.
１ 軸筒 １ａ 軸部 １ｂ 段部 １ｃ スリット ２ 口先部 ２ａ 係合壁 ２ｂ 段部 ２ｃ 孔部 ３ 芯ケース ３ａ 軸部 ３ｂ 段部 ４ ノックカバー ４ａ クリップ ５ 消しゴム ６ チャック ６ａ 係止部 ７ スライダー ７ａ 先端パイプ ７ｂ 保持チャック ７ｃ 芯ガイド軸 ７ｄ 片部 ７ｅ 係合部材 ７ｆ 窓部 ７ｇ 窓部 ７ｈ 筒状部 ８ 締め具 ８ａ 突部 ９ スプリング １０ 残芯 １１ 供給芯 １２ 軸筒 １３ 口先部 １３ａ 段部 １４ 軸継ぎ手 １５ 芯ケース １６ チャック １６ａ 係止部 １７ 締め具 １８ スライダー １８ａ 芯ガイド軸部 １８ｂ 先端パイプ １８ｃ 保持チャック １９ スプリング ２０ 隙間 1 Shaft 1a Shaft 1b Step 1c Slit 2 Tip 2a Engaging wall 2b Step 2c Hole 3 Core case 3a Shaft 3b Step 4 Knock cover 4a Clip 5 Eraser 6 Chuck 6a Locking section 7 Slider 7a Tip Pipe 7b Holding chuck 7c Core guide shaft 7d One piece 7e Engaging member 7f Window 7g Window 7h Tubular part 8 Fastener 8a Projection 9 Spring 10 Remnant core 11 Supply core 12 Shaft cylinder 13 Tip 13a Step 14 Shaft Joint 15 Core case 16 Chuck 16a Locking part 17 Fastener 18 Slider 18a Core guide shaft 18b Tip pipe 18c Holding chuck 19 Spring 20 Clearance
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2C353 FA04 FC13 FE02 FE04 FE06 FG06 HA06 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C353 FA04 FC13 FE02 FE04 FE06 FG06 HA06
Claims (1)
動で芯を把持し、且つ芯を繰り出すように成したシャー
プペンシルに於いて、軸筒の前端に取付けられた口先部
の内孔に先端部が口先部の前端から突出された状態に嵌
挿されるスライダーの内孔部略前端に保持チャックが設
けられ、スライダーの後退位置で、前記口先部の内孔周
面とスライダー外周面との間でスライダーの前進が阻止
されるように係合されると共に、チャックの後退位置
で、スライダーの略後端に設けた後方の係止部と芯ケー
スの前方に設けた係止部との間が係止され、またその状
態からチャックが前進して、締め具が口先部の段部に当
接するまで前記係止が解除され、チャックが更にやや前
進した状態で、スライダーの略後端に設けた前方の係止
部と芯ケースの前方に設けた係止部が係止して、チャッ
クの更なる前進と共にスライダーが共に前進し、最前進
した状態からチャックを後退させた時に、再びスライダ
ーの後端に設けた後方の係止部と芯ケースの前方に設け
た係止部との間が係止されて、チャックと共にスライダ
ーが連動して後退するように構成されたことを特徴とす
るシャープペンシル。In a mechanical pencil configured to grip a lead and extend the lead by a forward and backward movement of a chuck disposed in front of the barrel, a tip portion attached to a front end of the barrel is provided. A holding chuck is provided at a substantially front end of the inner hole portion of the slider which is inserted in a state where a tip portion protrudes from the front end of the mouth portion, and at a retracted position of the slider, the inner peripheral surface of the mouth portion and the outer peripheral surface of the slider. And a locking portion provided at a substantially rear end of the slider and a locking portion provided at the front of the lead case at a retracted position of the chuck. And the chuck is advanced from this state, and the lock is released until the fastener comes into contact with the stepped portion of the lip portion. With the chuck further advanced, the slider is moved substantially at the rear end. On the front locking part and the front of the lead case The locking portion provided is locked, and the slider advances together with the further advancement of the chuck, and when the chuck is retracted from the most advanced state, the rear locking portion and the core provided at the rear end of the slider again. A mechanical pencil characterized in that the space between the engaging portion and the engaging portion provided at the front of the case is engaged, and the slider is moved back together with the chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001160334A JP2002347385A (en) | 2001-05-29 | 2001-05-29 | Mechanical pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001160334A JP2002347385A (en) | 2001-05-29 | 2001-05-29 | Mechanical pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002347385A true JP2002347385A (en) | 2002-12-04 |
Family
ID=19003766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001160334A Withdrawn JP2002347385A (en) | 2001-05-29 | 2001-05-29 | Mechanical pencil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002347385A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2353592A1 (en) | 2002-09-26 | 2011-08-10 | Japan Science and Technology Agency | Therapeutic causing contraction of mucosal tissue and method of treating diseases relating to mucosal tissues |
-
2001
- 2001-05-29 JP JP2001160334A patent/JP2002347385A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2353592A1 (en) | 2002-09-26 | 2011-08-10 | Japan Science and Technology Agency | Therapeutic causing contraction of mucosal tissue and method of treating diseases relating to mucosal tissues |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20080805 |