JPS5842137Y2

JPS5842137Y2 - Shape pencil

Info

Publication number: JPS5842137Y2
Application number: JP8518178U
Authority: JP
Inventors: 洋住田
Original assignee: パイロツトプレシジヨン株式会社
Priority date: 1978-06-20
Filing date: 1978-06-20
Publication date: 1983-09-22
Also published as: JPS552656U

Description

【考案の詳細な説明】従来のノック式シャープペンシルのチャックスプリング
は芯を保持する働きと同時に軸筒より後端に突出した消
しゴムの使用に対しても没入することがないという作用
を行なっていた。[Detailed explanation of the invention] The chuck spring of conventional knock-type mechanical pencils not only holds the lead but also prevents the eraser, which protrudes from the barrel at the rear end, from sinking in when used. .

けれどもその芯繰り出しの操作がシャープペンシルを持
ち替えて行なうなど煩わしく非能率でもあった。However, the operation of feeding out the lead was cumbersome and inefficient, as it required changing hands with the mechanical pencil.

そこでこのシャープペンシルはチャックスプリングを極
めて弱くすることによって重量体に慣性力を働かせて芯
を繰り出すという、つまり筆記姿勢のままシャープペン
シルを振って芯を繰り出すものに係り、さらにこのよう
なシャープペンシルにおいても消しゴムが使用できるよ
うにしたものである。Therefore, this mechanical pencil uses an extremely weak chuck spring to exert inertia on a heavy body to feed out the lead.In other words, the mechanical pencil is shaken while in the writing position to feed out the lead. It also allows the use of erasers.

この考案の構成を図面にもとづいて詳しく説明すると、
第１図の胴１の前部には、芯２を軽く保持するための芯
ホルダ−３を内蔵した口金４が、連結具５のねじ部５Ａ
に胴１の先端突部ＩＡを介して螺合し、該連結具５の凹
溝５Ｂには締リング６を遊嵌する。The structure of this idea will be explained in detail based on the drawings.
In the front part of the barrel 1 shown in FIG.
The connector 5 is screwed into the body 1 through the tip protrusion IA, and the tightening ring 6 is loosely fitted into the concave groove 5B of the connector 5.

連結具５と芯タンク７との間には非常に弱い弾発力のチ
ャックスプリング８が設けられ、さらにチャック９と芯
タンク７が固着されていることによりチャックスプリン
グ８の弾発力によって通常チャック９の頭部９Ａが締リ
ング６に押し付けられて構成されている。A chuck spring 8 with a very weak elastic force is provided between the connector 5 and the core tank 7, and since the chuck 9 and the core tank 7 are fixed, the elastic force of the chuck spring 8 causes a normal chuck The head 9A of 9 is pressed against the tightening ring 6.

連結具５の後端５Ｃと芯タンク７の前端７Ａとは当接可
能に構成されているとともに、筒部９Ｂの肉厚を薄く構
成したチャック９の前端９Ｃより口金４の内股４Ａまで
の距離Ｌ１およびチャック９が前進するときに圧縮させ
られるチャックスプリング８の取付時長さより全圧縮時
長さを差し引いた距離は、連結具５の後端５Ｃより芯タ
ンク７の前端７Ａまでの距離Ｌ２よりも長く構成されて
いる。The rear end 5C of the connector 5 and the front end 7A of the core tank 7 are configured to be able to come into contact with each other, and the distance from the front end 9C of the chuck 9 to the inner thigh 4A of the base 4 is such that the wall thickness of the cylindrical portion 9B is thin. The distance obtained by subtracting the fully compressed length from the installed length of the chuck spring 8, which is compressed when L1 and the chuck 9 move forward, is less than the distance L2 from the rear end 5C of the connector 5 to the front end 7A of the core tank 7. It also consists of a long

芯タンク７内の後部には、芯２径よりわずかに大径の芯
挿入穴１０Ａを有ししかも後端１０Ｂがすりばち状に構
成された栓体１０が取り付けられ、芯タンク７内に挿入
されている替芯１１の後端１１Ａと栓体１０の前端１０
Ｃとの距離がきわめて短かく構成され、さらに芯タンク
７の突部７Ｂには弾性体１２が固定されるとともに外側
には円筒状の重量体１３が摺動可能に取り付けられてい
る。A plug body 10 having a core insertion hole 10A having a diameter slightly larger than the diameter of the core 2 and having a dome-shaped rear end 10B is attached to the rear part of the core tank 7, and is inserted into the core tank 7. The rear end 11A of the refill 11 and the front end 10 of the stopper 10
Further, an elastic body 12 is fixed to the protrusion 7B of the core tank 7, and a cylindrical weight body 13 is slidably attached to the outside.

一方後段１４Ａを有する内軸１４に、消しゴム支え１５
を前方より摺動自在に挿入し、さらに軸スプリング１６
を挿入した後に駒１７を内軸１４の前端１４Ｂに螺着し
、消しゴム支え１５を内軸１４の後段１４Ａに係止して
構成する。On the other hand, an eraser support 15 is attached to the inner shaft 14 having the rear stage 14A.
is slidably inserted from the front, and then the shaft spring 16 is inserted.
After inserting, the piece 17 is screwed onto the front end 14B of the inner shaft 14, and the eraser support 15 is locked to the rear end 14A of the inner shaft 14.

このように構成した内軸１４を軸１８の内面１８Ａに圧
入して固定する。The inner shaft 14 configured in this way is press-fitted into the inner surface 18A of the shaft 18 and fixed.

消しゴム支え１５の後部内側１５Ａには消しゴムケース
１９を被嵌した消しゴム２０が嵌合されていて、該消し
ゴム２０を覆うようにノブ２１が後部外側１５Ｂに嵌合
され、軸１８の後端１８Ｂより消しゴム２０およびツブ
２１が突出している。An eraser 20 fitted with an eraser case 19 is fitted to the rear inner side 15A of the eraser support 15, and a knob 21 is fitted to the rear outer side 15B so as to cover the eraser 20. Eraser 20 and knob 21 protrude.

このように構成された胴１と軸１８とを螺合することに
より、重量体１３は弾性体１２と消しゴム支え１５の前
端１５Ｃとの間を摺動可能に構成され、かつこの状態で
芯タンク７の後端７Ｃと消しゴム支え１５の内股１５Ｄ
とはわずかのすきまがあけられている。By screwing together the barrel 1 configured in this way and the shaft 18, the weight body 13 is configured to be able to slide between the elastic body 12 and the front end 15C of the eraser support 15, and in this state, the core tank 7 rear end 7C and inner thigh 15D of eraser support 15
There is a slight gap between the two.

ついでこの考案の作用を述べると、芯２を繰り出すため
には、使用者が筆記状態のままの持ち方でシャープペン
シルを軸方向に振ることにより重量体１３が摺動して弾
性体１２に衝突し、重量体１３の慣性力がチャックスプ
リング８の弾発力に打ち勝って芯タンク７およびチャッ
ク９を前進させる。Next, to describe the operation of this device, in order to feed out the lead 2, the user swings the mechanical pencil in the axial direction while holding it while writing, and the weight body 13 slides and collides with the elastic body 12. However, the inertial force of the weight body 13 overcomes the elastic force of the chuck spring 8 and moves the core tank 7 and chuck 9 forward.

よって芯２が一定量線り出され筆記可能となる。Therefore, the lead 2 is drawn out by a certain amount and becomes ready for writing.

つぎに芯２を戻す場合にはノブ２１をノックすることに
より消しゴム支え１５が前進し、梢しゴム支え１５の内
股１５Ｄが芯タンク７の後端７Ｃに当接してチャック９
および芯タンク７を前進させ、締リング６が口金４の内
股４Ａに当接することによりチャック９が拡開し、芯２
は指または紙面に押し付けられて戻される。Next, when returning the lead 2, the eraser support 15 moves forward by knocking the knob 21, and the inner thigh 15D of the rubber support 15 contacts the rear end 7C of the lead tank 7, and the chuck 9
When the core tank 7 is moved forward and the tightening ring 6 comes into contact with the inner thigh 4A of the mouthpiece 4, the chuck 9 is expanded and the core 2
is pressed back against the finger or the paper.

このように重量体１３の慣性力でたわむというチャック
スプリング８のために消しゴム２０の使用時の押圧に耐
えることのできる構成を軸１８の後部に構成したもので
、このような構成によって消しゴム支え１５を軸スプリ
ング１６によって消しゴム２０の使用時の押圧に、抗す
る弾発力で単独に作用させて、従来のノック式シャープ
ペンシルと同様の作用効果を得たものである。Because of the chuck spring 8, which bends due to the inertia of the weight body 13, a structure is provided at the rear of the shaft 18 that can withstand the pressure applied when the eraser 20 is used.With such a structure, the eraser support 15 The shaft spring 16 is used to independently act on the eraser 20 with an elastic force that resists the pressure applied during use, thereby achieving the same effect as that of a conventional knock-type mechanical pencil.

第２図は内軸に前段を構成する他の実施態様を示したも
ので、内軸１１４の内面に凹溝１１４Ｃを設けるととも
に、駒２２を断面Ｃ型で弾性を持たせ、内軸１１４の前
方より駒１１７を挿入して凹溝１１４Ｃに落し込んで構
成したものである。FIG. 2 shows another embodiment in which the front stage is configured on the inner shaft, in which a groove 114C is provided on the inner surface of the inner shaft 114, and the piece 22 is made to have a C-shaped cross section and is elastic. It is constructed by inserting the piece 117 from the front and dropping it into the groove 114C.

第３図は内輪に前段を構成する他の実施態様を示したも
ので、消しゴム支え１１５を挿入してから内軸２１４の
前端２１４Ｂを内側に折り曲げて構成したものである。FIG. 3 shows another embodiment in which the front stage is constructed in the inner ring, and is constructed by inserting the eraser support 115 and then bending the front end 214B of the inner shaft 214 inward.

以上のような構成と作用を有するこの考案はシャープペ
ンシルを持ち変える必要なしに、単に筆記体を軸方向に
振るだけで一定量づつ芯が繰り出されるとともに、消し
ゴムを従来のノック式シャープペンシルと同様に使用で
きるという画期的な効果を有するものである。With the above-mentioned structure and function, this device does not require you to change your grip on the mechanical pencil; simply by shaking the cursive in the axial direction, the lead will be drawn out a certain amount at a time. It has an epoch-making effect in that it can be used for many purposes.

[Brief explanation of the drawing]

第１図はこの考案を示す縦断面図、第２図および第３図
はこの考案の他の実施態様を示す主要部縦断面図である
。１・・・・・・胴、１Ａ・・・・・・胴１の先端突部、
２・・・・・・芯、３・・・・・・芯ホルダ−，４・・
・・・・口金、４Ａ・・・・・・口金４の内股、５・・
・・・・連結具、５Ａ・・・・・・連結具５のねじ部、
５Ｂ・・・・・・連結具５の凹溝、５Ｃ・・・・・・連
結具５の後端、６・・・・・・締リング、７・・・・・
・芯タンク、７Ａ・・・・・・芯タンク７の前端、７Ｂ
・・・・・・芯タンク７の突部、７Ｃ・・・・・・芯タ
ンク７の後端、８・・・・・・チャックスプリング、９
・・・・・・チャック、９Ａ・・・・・・チャック９の
頭部、９Ｂ・・・・・・チャック９の筒部、９Ｃ・・・
・・・チャック９の前端、１０・・・・・・栓体、ＩＯ
Ａ・・・・・・栓体１０の挿入穴、ＩＯＢ・・・・・・
栓体１０の後端、１０Ｃ・・・・・・栓体１０の前端、
１１・・・・・・替芯、１１Ａ・・・・・・替芯１１の
後端、１２・・・・・・弾性体、１３・・・・・・重量
体、１４．１１４，２１４・・・・・・内軸、１４Ａ・
・・・・・内軸１４の後段、１４Ｂ、２１４Ｂ・
・・・・・内軸１４，２１４の前端、１１４Ｃ・・・・
・・内軸１１４の凹溝、１５，１１５・・・・・・消し
ゴム支え、１５Ａ・・・・・・消しゴム支え１５の後部
内側、１５Ｂ・・・・・・消しゴム支え１５の後部外側
、１５Ｃ・・・・・・消しゴム支え１５の前端、１５Ｄ
・・・・・・消しゴム支え１５の内股、１６・・・・・
・軸スプリング、１７，１１７・・・・・・駒、１８・
・・・・・軸、１８Ａ・・・・・・軸１８の内面、１８
Ｂ・・・・・・軸１８の後端、１９・・・・・・消しゴ
ムケース、２０・・・・・・消しゴム、２１・・・・・
・ノブ。FIG. 1 is a longitudinal sectional view showing this invention, and FIGS. 2 and 3 are longitudinal sectional views of main parts showing other embodiments of this invention. 1... Trunk, 1A... Tip protrusion of trunk 1,
2... Core, 3... Core holder, 4...
...Base, 4A...Inner thigh of cap 4, 5...
...Connection tool, 5A...Threaded part of connection tool 5,
5B... Concave groove of coupling tool 5, 5C... Rear end of coupling tool 5, 6... Tightening ring, 7...
- Core tank, 7A...Front end of core tank 7, 7B
... Protrusion of core tank 7, 7C ... Rear end of core tank 7, 8 ... Chuck spring, 9
...Chuck, 9A...Head of chuck 9, 9B...Cylinder part of chuck 9, 9C...
... Front end of chuck 9, 10 ... Stopper, IO
A...Insertion hole for plug 10, IOB...
The rear end of the plug 10, 10C...the front end of the plug 10,
11... Refill, 11A... Rear end of refill 11, 12... Elastic body, 13... Weight body, 14.114,214. ...Inner shaft, 14A.
...The rear stage of the inner shaft 14, 14 B, 214 B.
...Front end of inner shaft 14, 214, 114C...
...Concave groove of inner shaft 114, 15,115... Eraser support, 15A... Rear inner side of eraser support 15, 15B... Rear outer side of eraser support 15, 15C ...Front end of eraser support 15, 15D
...Eraser support 15 inner thigh, 16...
・Axis spring, 17, 117...Piece, 18・
...Shaft, 18A...Inner surface of shaft 18, 18
B... Rear end of shaft 18, 19... Eraser case, 20... Eraser, 21...
·Knob.

Claims

[Scope of utility model registration request]

1. A cap with a lead holder is connected to the tip of the barrel, and inside the barrel there is a core tank with a chuck with a tightening ring fitted onto the head. The load when installing the chuck spring that springs backward in the axial direction is set to 200 g or less, and a shaft spring is provided between the front stage of the inner shaft and the eraser support with the eraser, and the eraser support is abutted against the rear stage of the inner shaft. A mechanical pencil characterized in that the side is connected to a shaft having a fixed inner ring. 2. The mechanical pencil according to claim 1, wherein the front or rear stage of the inner shaft is constructed by screwing a piece onto the inner shaft. 3. The mechanical pencil according to claim 1, wherein the front or rear stage of the inner shaft is constructed by inserting an elastic piece with a C-shaped cross section into the groove of the inner shaft. 4. Utility model registration claim 1, characterized in that the front stage or rear stage of the inner shaft is constructed by bending the end of the inner shaft
Mechanical pencil as described in section. 5. The mechanical pencil according to claim 1, wherein the inner shaft is fixed by press-fitting or gluing into the inner surface of the shaft.