JPH0450158Y2 - - Google Patents
Info
- Publication number
- JPH0450158Y2 JPH0450158Y2 JP1987025195U JP2519587U JPH0450158Y2 JP H0450158 Y2 JPH0450158 Y2 JP H0450158Y2 JP 1987025195 U JP1987025195 U JP 1987025195U JP 2519587 U JP2519587 U JP 2519587U JP H0450158 Y2 JPH0450158 Y2 JP H0450158Y2
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- pipe
- tip
- connector
- tank
- 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
Links
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案はチヤツクを前進させることによりチ
ヤツクを拡開し、次の芯を追従するノツク式シヤ
ープペンシルのチヤツク拡開装置に関するもので
ある。[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a chuck expanding device for a knock-type sharp pencil that expands the chuck by advancing the chuck and follows the next lead.
従来のノツク式シヤープペンシルは、チヤツク
を前進させた時、チヤツク自身の弾力によりチヤ
ツクが拡開していた。
In conventional lock-type sharp pencils, when the chuck was moved forward, the chuck expanded due to the elasticity of the chuck itself.
従つて頻繁にチヤツクが開閉するとチヤツクが
撓んでしまい、拡開できなくなつてしまうもので
あつた。しかもチヤツクが曲がつていた場合には
次の芯がチヤツク内に落下できず、次の芯が追従
できないという欠点を有するものであつた。
Therefore, if the chuck is opened and closed frequently, the chuck becomes bent and cannot be opened. Moreover, if the chuck is bent, the next lead cannot fall into the chuck and the next lead cannot follow the lead.
上記の問題点を改善した本考案の構成を、実施
例に対応する第１図を用いて説明すると、軸筒４
内にチヤツクスプリング７により軸方向後方に付
勢されてチヤツク６が内蔵され、チヤツク６の芯
保持部６Ｃおよび頭部６Ｂが位置する前部は軸方
向に複数の切溝が設けられて弾性を有するように
構成されている。該チヤツク６は通常頭部６Ｂが
締具５に押圧されて閉じられ芯１を強く保持して
いる。チヤツク６の後部筒６Ｄ内にはチヤツク６
のテーパー状の内段６Ｅと先端がわずかに離間し
てパイプ８が挿入されている。該パイプ８を固着
するコネクター９と軸筒４の内段４Ｂとの間には
リターンスプリング１０が張架され、コネクター
９は軸方向後方に付勢されて外段９Ａが軸筒４の
後部内鍔４Ｃに当接されている。しかも、チヤツ
ク６の後端とコネクター９は長手方向に適宜離間
され、該離間距離を、前記チヤツク６の内段６Ｅ
よりパイプ８の先端までの離間距離に比べて長く
設定することにより、芯タンク１１を前進させる
とパイプ８の先端がチヤツク６の内段６Ｅに当接
してチヤツク６を拡開するものである。コネクタ
ー９の後端は次の芯１をパイプ８内に導くために
漏斗状に構成され、該コネクター９には予備芯を
収納する芯タンク１１が固着されている。
The structure of the present invention that improves the above problems will be explained using FIG. 1 corresponding to the embodiment.
A chuck 6 is built into the chuck 6, which is biased rearward in the axial direction by a chuck spring 7, and the front part of the chuck 6, where the core holding part 6C and the head 6B are located, is provided with a plurality of grooves in the axial direction and is elastic. It is configured to have. The chuck 6 normally has its head 6B pressed against the fastener 5 to close it and strongly hold the core 1. The chuck 6 is inside the rear cylinder 6D of the chuck 6.
The pipe 8 is inserted with its tip slightly spaced from the tapered inner stage 6E. A return spring 10 is stretched between the connector 9 that fixes the pipe 8 and the inner stage 4B of the shaft cylinder 4, and the connector 9 is urged rearward in the axial direction so that the outer stage 9A is pushed into the rear part of the shaft cylinder 4. It is in contact with the collar 4C. Moreover, the rear end of the chuck 6 and the connector 9 are appropriately spaced apart in the longitudinal direction, and the distance is set by the inner stage 6E of the chuck 6.
By setting the gap to be longer than the distance to the tip of the pipe 8, when the core tank 11 is moved forward, the tip of the pipe 8 comes into contact with the inner stage 6E of the chuck 6, thereby expanding the chuck 6. The rear end of the connector 9 is configured in a funnel shape for guiding the next wick 1 into the pipe 8, and a wick tank 11 for storing a spare wick is fixed to the connector 9.
第１図の状態で筆記を行い芯１が磨耗して短く
なつた場合には、リターンスプリング１０の弾発
力に抗して芯タンク１１を前進させ、パイプ８の
先端をチヤツク６の内段６Ｅに当接させる。する
とチヤツク６がチヤツクスプリング７の弾発力に
抗して前進し、芯１を一定量繰り出す。さらにパ
イプ８を前進させるとチヤツク６の頭部６Ｂが締
具５より外れ、パイプ８の先端によりチヤツク６
のテーパー状の内段６Ｅが押し広げられチヤツク
６が拡開するとともに、チヤツク６が軸筒４の外
周方向に微動修正されてパイプ８の孔とチヤツク
６の芯保持部６Ｃの中心が一致する。従つて筆記
中の芯１が短くなつた場合には次の芯１がチヤツ
ク６内にスムーズに落下される。
If writing is performed in the state shown in FIG. 1 and the lead 1 becomes worn and shortened, the lead tank 11 is moved forward against the elastic force of the return spring 10, and the tip of the pipe 8 is inserted into the inner stage of the chuck 6. Bring it into contact with 6E. Then, the chuck 6 moves forward against the elastic force of the chuck spring 7, and draws out the core 1 by a certain amount. When the pipe 8 is further advanced, the head 6B of the chuck 6 comes off from the fastener 5, and the tip of the pipe 8 causes the chuck 6 to move forward.
The tapered inner stage 6E is pushed out and the chuck 6 expands, and the chuck 6 is slightly adjusted in the outer circumferential direction of the shaft tube 4 so that the center of the hole in the pipe 8 and the core holding part 6C of the chuck 6 coincide. . Therefore, when the lead 1 being used for writing becomes short, the next lead 1 is smoothly dropped into the chuck 6.
以下、本考案の実施例を説明する。 Examples of the present invention will be described below.
第１図において、芯１を軽い力で保持する芯ホ
ルダー２を内蔵した口金３が軸筒４の前部に螺合
され、口金３の係止段３Ａと軸筒４の前部内鍔４
Ａとの間には締具５が遊嵌されている。軸筒４の
前部内鍔４Ａとチヤツク６の後部外段６Ａとの間
にはチヤツクスプリング７が張架され、チヤツク
６を軸方向後方に付勢している。該チヤツク６の
頭部６Ｂおよび芯保持部６Ｃが位置する前部は軸
方向に複数の切溝が設けられて数分割され、弾性
を有するように構成されている（図示していない
がチヤツクは各片に完全に数分割されていても何
ら問題はない）。チヤツク６は後方に付勢されて
頭部６Ｂが締具５に押圧され、チヤツク６の芯保
持部６Ｃが閉じられて芯１を強く保持している。
チヤツク６の後部筒６Ｄ内にはチヤツク６の内段
６Ｅに先端がわずかに離間してパイプ８が挿入さ
れている。パイプ８の後部に固着されたコネクタ
ー９の前端と軸筒４の内段４Ｂとの間にはリター
ンスプリング１０が張架され、コネクター９の外
段９Ａが軸筒４の後部内鍔４Ｃに当接されてい
る。しかも、チヤツク６の後端とコネクター９は
長手方向に適宜離間され、該離間距離は前記チヤ
ツク６の内段６Ｅよりパイプ８の先端までの離間
距離に比べて長く設定されているので、芯タンク
１１を前進させるとパイプ８の先端がチヤツク６
の内段６Ｅに当接してチヤツク６を拡開できるも
のである。コネクター９の後端は次の芯１をパイ
プ８内に導くために漏斗状に構成され、コネクタ
ー９には予備芯を収納する芯タンク１１が固着さ
れている。 In FIG. 1, a cap 3 with a built-in core holder 2 that holds the core 1 with a light force is screwed onto the front part of the barrel 4, and a locking stage 3A of the cap 3 and a front inner flange 4 of the barrel 4 are screwed together.
A fastener 5 is loosely fitted between A and A. A chuck spring 7 is stretched between the front inner flange 4A of the shaft cylinder 4 and the rear outer stage 6A of the chuck 6, and urges the chuck 6 rearward in the axial direction. The front part of the chuck 6, where the head 6B and the lead holding part 6C are located, is divided into several sections with a plurality of grooves provided in the axial direction, and is configured to have elasticity (although not shown, the chuck There is no problem even if each piece is completely divided into several parts). The chuck 6 is urged backward, the head 6B is pressed against the fastener 5, and the lead holding portion 6C of the chuck 6 is closed to strongly hold the lead 1.
A pipe 8 is inserted into the rear cylinder 6D of the chuck 6 with its tip slightly spaced apart from the inner stage 6E of the chuck 6. A return spring 10 is stretched between the front end of the connector 9 fixed to the rear part of the pipe 8 and the inner stage 4B of the shaft cylinder 4, and the outer stage 9A of the connector 9 comes into contact with the rear inner flange 4C of the shaft cylinder 4. being touched. Moreover, the rear end of the chuck 6 and the connector 9 are appropriately spaced apart in the longitudinal direction, and the distance is set longer than the distance from the inner stage 6E of the chuck 6 to the tip of the pipe 8, so that the wick tank When moving forward 11, the tip of pipe 8 will be connected to chuck 6.
The chuck 6 can be expanded by coming into contact with the inner stage 6E of the chuck. The rear end of the connector 9 is configured in a funnel shape to guide the next wick 1 into the pipe 8, and a wick tank 11 for storing a spare wick is fixed to the connector 9.
尚、コネクターは芯タンクと一体でも何ら問題
はない。 There is no problem even if the connector is integrated with the core tank.
この第１図の状態で筆記を行い芯１を繰り出す
場合には、リターンスプリング１０の弾発力に抗
して芯タンク１１を前進させ、パイプ８の先端を
チヤツク６のテーパー状の内段６Ｅに当接させ
る。するとチヤツクスプリング７を圧縮してチヤ
ツク６が前進し芯１を繰り出す。そしてチヤツク
６の頭部６Ｂに外嵌された締具５が口金３の係止
段３Ａに当接されるとチヤツク６より締具５が外
れる。するとチヤツク６の前部は数分割されかつ
チヤツクスプリング７により常に後方に付勢され
ているので、パイプ８の前進とともにパイプ８の
先端によりチヤツク６の内段６Ｅが押し広げられ
チヤツク６が拡開する。しかもチヤツク６は軸筒
４の外周方向に揺動可能に軸筒４に内蔵されてい
るので、パイプ８の挿入によりチヤツク６の芯保
持部６Ｃとパイプ８の孔の中心が一致するように
チヤツク６が微動修正されて第２図に示した状態
となる。従つて使用中の芯１が短くなつた場合に
は芯タンク１１内の予備芯がスムーズにチヤツク
６内に落下される。 When writing and drawing out the lead 1 in the state shown in FIG. bring it into contact with. Then, the chuck spring 7 is compressed, the chuck 6 moves forward, and the lead 1 is fed out. When the fastener 5 fitted onto the head 6B of the chuck 6 comes into contact with the locking stage 3A of the cap 3, the fastener 5 is removed from the chuck 6. Then, since the front part of the chuck 6 is divided into several parts and is always urged backward by the chuck spring 7, as the pipe 8 moves forward, the inner stage 6E of the chuck 6 is pushed out by the tip of the pipe 8, and the chuck 6 is expanded. Open. Moreover, since the chuck 6 is built into the shaft cylinder 4 so as to be able to swing in the direction of the outer circumference of the shaft cylinder 4, the chuck can be inserted so that the center of the core holding part 6C of the chuck 6 and the hole of the pipe 8 coincide with each other when the pipe 8 is inserted. 6 has been corrected by slight movement and is in the state shown in FIG. Therefore, when the wick 1 in use becomes short, the spare wick in the wick tank 11 is smoothly dropped into the chuck 6.
以上説明したように本考案は、チヤツクスプリ
ングにより軸方向後方に付勢されたチヤツクと、
該チヤツクと分離されかつリターンスプリングに
より軸方向後方に付勢された芯タンクに直接ある
いはコネクターを介してパイプを固着し、該パイ
プをチヤツクの後部筒内にわずかに離間して挿入
する。しかもチヤツクの後端よりパイプの先端ま
での離間距離を、パイプを固着した芯タンクある
いはコネクターよりチヤツクの後端までの長手方
向離間距離に比べて短く構成し、芯タンクの前進
によりパイプの先端がチヤツクの内段に当接して
チヤツクを拡開するように構成した点に特長があ
る。
As explained above, the present invention includes a chuck that is biased rearward in the axial direction by a chuck spring,
A pipe is fixed directly or via a connector to a core tank that is separated from the chuck and is urged axially rearward by a return spring, and the pipe is inserted into the rear cylinder of the chuck at a slight distance. Moreover, the distance from the rear end of the chuck to the tip of the pipe is shorter than the distance in the longitudinal direction from the core tank to which the pipe is fixed or from the connector to the rear end of the chuck, so that the tip of the pipe can be moved as the core tank moves forward. The feature is that the chuck is configured to expand by coming into contact with the inner stage of the chuck.
このことにより頻繁にチヤツクを開閉した後で
もチヤツクが確実に拡開でき、チヤツクの耐久性
が飛躍的に向上するとともに、次の芯がスムーズ
にチヤツク内に落下できるものである。さらにチ
ヤツクを閉じる時にチヤツク自身のバネ力により
拡開するものに比べて弱い力で閉じることができ
るので、確実にチヤツクが閉じて強い芯保持力が
得られるものである。 This allows the chuck to open reliably even after frequent opening and closing, dramatically improving the durability of the chuck, and allowing the next core to fall smoothly into the chuck. Furthermore, when the chuck is closed, the chuck can be closed with a weaker force than the chuck that expands due to its own spring force, so the chuck can be reliably closed and a strong core holding force can be obtained.
第１図はこの考案のノツク式シヤープペンシル
のチヤツク拡開装置を示す主要部縦断面図、第２
図は第１図におけるチヤツクを拡開した状態を示
す主要部縦断面図である。
４……軸筒、５……締具、６……チヤツク、６
Ｄ……チヤツク６，１０６の後部筒、７……チヤ
ツクスプリング、８……パイプ、９……コネクタ
ー、１０……リターンスプリング、１１……芯タ
ンク。
Fig. 1 is a vertical cross-sectional view of the main part showing the chuck expanding device of the chuck-type sharp pencil of this invention;
This figure is a longitudinal cross-sectional view of the main part showing the chuck in FIG. 1 in an expanded state. 4... Shaft tube, 5... Fastener, 6... Chack, 6
D...Rear cylinder of chuck 6, 106, 7...chuck spring, 8...pipe, 9...connector, 10...return spring, 11...core tank.
Claims (1)
グにより軸方向後方に付勢されて締具に当接され
閉じられるチヤツクと、該チヤツクと分離しかつ
リターンスプリングにより軸方向後方に付勢され
た芯タンクと、該芯タンクに直接あるいはコネク
ターを介して固着されたパイプとからなり、チヤ
ツクの後部筒内に挿入されたパイプの先端とチヤ
ツクの内段を長手方向にわずか離間して構成し、
該チヤツクの内段よりパイプの先端までの離間距
離を、パイプを固着した芯タンクあるいはコネク
ターよりチヤツクの後端までの長手方向離間距離
に比べて短く構成し、芯タンクの前進によりパイ
プの先端がチヤツクの内段に当接してチヤツクを
拡開するように構成したことを特徴とするノツク
式シヤープペンシルのチヤツク拡開装置。 a shaft cylinder, a chuck disposed within the shaft cylinder and urged rearward in the axial direction by a chuck spring to be brought into contact with a fastener and closed; and a chuck which is separated from the chuck and urged rearward in the axial direction by a return spring. It consists of a core tank and a pipe fixed to the core tank directly or through a connector, and the tip of the pipe inserted into the rear cylinder of the chuck and the inner stage of the chuck are slightly spaced apart in the longitudinal direction. ,
The distance from the inner stage of the chuck to the tip of the pipe is configured to be shorter than the distance in the longitudinal direction from the wick tank or connector to which the pipe is fixed to the rear end of the chuck, so that the tip of the pipe moves as the wick tank moves forward. What is claimed is: 1. A chuck expanding device for a lock-type sharp pencil, characterized in that the chuck is expanded by coming into contact with the inner stage of the chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987025195U JPH0450158Y2 (en) | 1987-02-23 | 1987-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987025195U JPH0450158Y2 (en) | 1987-02-23 | 1987-02-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63132780U JPS63132780U (en) | 1988-08-30 |
| JPH0450158Y2 true JPH0450158Y2 (en) | 1992-11-26 |
Family
ID=30825118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987025195U Expired JPH0450158Y2 (en) | 1987-02-23 | 1987-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450158Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6548138B2 (en) * | 2013-12-27 | 2019-07-24 | ぺんてる株式会社 | mechanical pencil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218296A (en) * | 1985-07-18 | 1987-01-27 | ミクロ株式会社 | Propelling pencil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6370388U (en) * | 1986-10-28 | 1988-05-11 |
-
1987
- 1987-02-23 JP JP1987025195U patent/JPH0450158Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218296A (en) * | 1985-07-18 | 1987-01-27 | ミクロ株式会社 | Propelling pencil |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63132780U (en) | 1988-08-30 |
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