JPH0628310Y2 - Knock cap structure for knock writing instruments - Google Patents
Knock cap structure for knock writing instrumentsInfo
- Publication number
- JPH0628310Y2 JPH0628310Y2 JP1986200737U JP20073786U JPH0628310Y2 JP H0628310 Y2 JPH0628310 Y2 JP H0628310Y2 JP 1986200737 U JP1986200737 U JP 1986200737U JP 20073786 U JP20073786 U JP 20073786U JP H0628310 Y2 JPH0628310 Y2 JP H0628310Y2
- Authority
- JP
- Japan
- Prior art keywords
- knock
- cap
- fitted
- writing instrument
- bush
- 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
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】 （考案の利用分野） 本考案はノック式筆記具のノックキャップ構造に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Use of the Invention) The present invention relates to a knock cap structure of a knock-type writing instrument.
（従来技術とその問題点） 鉛芯の繰り出しを可能としたシャープペンシルや，筆記
先端の出没を可能としたボールペン等の所謂ノック式筆
記具では，筆記具本体の軸筒後端部に内方に押し込み自
在なノックキャップを備えているものが多いが，これら
のノックキャップは軸筒に対し内方に押し込まれるが故
に軸筒の内径よりも小径であったり，軸筒の外径と同一
外径を有するもののノックストロークに相当する小径部
分を露出せねばならず，ノックキャップと軸筒の間に段
差を形成してしまい，而してこの段差が外観上の見栄え
を損ねるとともにデザインの制約になっている。(Prior art and its problems) In so-called knock-type writing instruments such as mechanical pencils that allow the lead core to be drawn out and ballpoint pens that allow the tip of the writing to appear and disappear, push it inwardly into the rear end of the barrel of the writing instrument body. Many of them have a free knock cap, but these knock caps are pushed inward with respect to the shaft cylinder, so they have a smaller diameter than the inner diameter of the shaft cylinder, or have the same outer diameter as the outer diameter of the shaft cylinder. However, the small diameter part corresponding to the knock stroke must be exposed, and a step is formed between the knock cap and the shaft cylinder, which impairs the appearance and limits the design. There is.
叙上の事情に鑑み，既に実公昭58-52147号にて蛇腹状の
伸縮筒部を有する筒体を筆記具本体の軸筒後端部に装着
してなるノックキャップ構造が提案されている。該ノッ
クキャップ構造は，ノックキャップを蛇腹状の伸縮筒部
と該筒部の末端部に形成されたノック部とで構成し，こ
の伸縮筒部及びノック部で前述の段差を隠蔽するととも
に伸縮筒部の伸縮でノック時の作動ストロークを吸収す
るようになしたものであるが，ノックキャップは基本的
に軟質材から形成されることから，ノックキャップを直
接ノック式筆記具の可動部に嵌合するようにすると，繰
り返しのノック操作の都度伸縮する伸縮筒部の変形でノ
ック部のノック杆との嵌合が徐々に甘くなり，遂には外
れてしまうといった問題を有していた。In view of the above circumstances, Japanese Utility Model Publication No. 58-52147 has already proposed a knock cap structure in which a tubular body having a bellows-shaped telescopic tubular portion is attached to the rear end of the barrel of the writing instrument body. In the knock cap structure, the knock cap is composed of a bellows-shaped expandable cylinder part and a knock part formed at the end of the cylinder part. The expandable cylinder part and the knock part conceal the above-mentioned step and the expandable cylinder. It is designed to absorb the operating stroke at the time of knocking by expanding and contracting the part, but since the knock cap is basically made of a soft material, the knock cap is directly fitted to the movable part of the knock type writing instrument. In this case, the deformation of the telescopic cylinder that expands and contracts each time the knocking operation is repeated weakens the engagement of the knocking rod with the knocking rod, and finally the knocking rod comes off.
そこで出願人は，第２図に示す如く，ノック式筆記具の
可動部（図示せず）に嵌合せるキャップ１０１に頭孔１
０２を設け，該頭孔１０２に嵌合係止し得る鍔１０３付
突起１０４を蛇腹状の伸縮筒部１０５を有する筒体１０
６の底面１０６ａに設け，これにより上述の問題を解消
せんとしたが，突起１０４の鍔１０３を大きくすればそ
れなりの係止力を得ることが可能となるが，逆に突起１
０４の頭孔１０２への嵌合が困難になり，又これをきら
って鍔１０３を小さくすると嵌合は容易になるものの，
逆に今度は筒体１０６が外れ易くなるといった相反する
問題を抱えるに至った。Therefore, the applicant, as shown in FIG. 2, inserts a head hole 1 into a cap 101 to be fitted to a movable part (not shown) of a knock-type writing instrument.
No. 02 is provided, and the protrusion 104 with the collar 103 that can be fitted and locked in the head hole 102 is provided
Although the above-mentioned problem was not solved by providing it on the bottom surface 106a of No. 6, if the flange 103 of the projection 104 is made larger, it is possible to obtain a certain amount of locking force.
Although it becomes difficult to fit 04 into the head hole 102, and if the collar 103 is made smaller to avoid this, the fitting becomes easier,
On the contrary, this time, there is a contradictory problem that the tubular body 106 is likely to come off.
（考案の目的） 本考案は上述せる問題点に鑑みなされたもので，蛇腹状
の伸縮筒部を有する筒体を筆記具本体側の可動部に嵌合
されるキャップに確実に組み付けることができ，しかも
組み付け後はノック操作を繰り返しても該キャップより
外れることがないノック式筆記具のノックキャップ構造
を提供せんとするものである。(Purpose of the Invention) The present invention has been made in view of the above-mentioned problems, and it is possible to reliably assemble a tubular body having a bellows-shaped telescopic tubular portion into a cap fitted to a movable portion of the writing instrument main body side. Moreover, the object of the present invention is to provide a knock cap structure of a knock-type writing instrument which does not come off from the cap even after repeating the knocking operation after the assembling.
（考案の概要） 本考案は、蛇腹状の伸縮筒部を筆記具本体の軸筒後端部
に装着してなるノッキ式筆記具のノックキャップ構造に
おいて、前記ノックキャップを、筆記具本体の可動部に
嵌合するキャップと、該キャップに形成された頭孔に嵌
合係止し得る鍔付突起を底面に有し、かつ蛇腹状の伸縮
筒部を有する筒体と、前記鍔付突起に形成された有底孔
に圧入嵌合される、該有底孔と略同径の大きなブッシュ
とで構成し、該ブッシュを前記筒体の内側より挿入し、
突起に形成された有底孔に圧入したことを要旨とし上記
目的に応ずるものである。(Summary of the Invention) The present invention provides a knock cap structure of a knocking type writing instrument in which a bellows-shaped telescopic tube portion is attached to a rear end portion of a shaft tube of a writing instrument body, and the knock cap is fitted to a movable portion of the writing instrument body. A cap to be fitted, a tubular body having a bellows-like expandable tubular portion on the bottom surface, which has a flanged protrusion capable of being fitted and locked in a head hole formed in the cap, and the flanged protrusion. A bush having a diameter substantially the same as that of the bottomed hole and press-fitted into the bottomed hole, and the bush is inserted from the inside of the tubular body,
The purpose of this invention is to press-fit into a bottomed hole formed in the protrusion to meet the above purpose.
（考案の実施例） 以下，本考案を実施例に基づき詳細に説明する。(Embodiment of the Invention) Hereinafter, the present invention will be described in detail based on an embodiment.
第１図並びに第２図は本考案の第１実施例を示すもの
で，１はノック式筆記具本体の軸筒であり，該軸筒１内
にはノック操作により前後動する可動部２が配置されて
いる。図示例ではノック式筆記具としてシャープペンシ
ルを示してあるので，前記可動部２は鉛芯を収納せる芯
タンクとなるが，ボールペンの場合にはボールペンリフ
ィールを押圧前進可能な押圧部材がこれに当る。３は前
記可動部２に着脱自在に嵌合された筒状のキャップであ
り，該キャップ３の頭壁３ａの中央には後述する突起７
が嵌合係止される頭孔４が穿設されている。尚，前述せ
るキャップ３はシャープペンシルの場合では，鉛芯を補
充する為に可動部２に着脱自在に嵌合されるが，ボール
ペンの場合にはその必要がないので可動部２に固定して
もよい。５は前記軸筒１の外径と略同一外径の蛇腹状の
伸縮筒部６を有する筒体であり，該筒体５は底面５ａの
中央に前記頭孔４に嵌合かつ係止し得る，後に詳述する
鍔付突起７を有している。該筒体５は比較的軟質な合成
ゴム，合成樹脂等の成形物として得られるものであり，
蛇腹状の伸縮筒部６にはノック操作時の収縮及び伸長に
充分な弾性力が付与される。前記突起７はキャップ３の
頭壁３ａの肉厚と略等しい高さと前記頭孔４の内径と略
等しい外径を備える脚部７ａと，頭孔４の内径より大き
な外径を備える鍔７ｂを有しており，更に中央に略同径
のブッシュ８が嵌合される有底孔７ｃを有している。本
考案のノックキャップＡは叙上のキャップ３，筒体５及
びブッシュ８より構成されており，筒体５先端を軸筒１
後端に当接してノック式筆記具本体の軸筒１後端部に装
着されている。1 and 2 show a first embodiment of the present invention, in which 1 is a shaft cylinder of a knock-type writing instrument main body, and inside the shaft cylinder 1, a movable part 2 which is moved back and forth by a knock operation is arranged. Has been done. In the illustrated example, since a mechanical pencil is shown as a knock-type writing instrument, the movable part 2 serves as a lead tank for accommodating a lead core, but in the case of a ballpoint pen, a pressing member capable of pressing and advancing a ballpoint pen refill corresponds to this. Reference numeral 3 denotes a cylindrical cap that is detachably fitted to the movable portion 2, and a head 7a of the cap 3 has a projection 7 to be described later at the center thereof.
Is provided with a head hole 4 for fitting and locking. In the case of a mechanical pencil, the cap 3 described above is detachably fitted to the movable part 2 to replenish the lead core, but in the case of a ball-point pen, it is not necessary, so it is fixed to the movable part 2. Good. Reference numeral 5 denotes a tubular body having a bellows-shaped expandable tubular portion 6 having an outer diameter substantially the same as that of the shaft tube 1. The tubular body 5 is fitted and locked in the head hole 4 at the center of the bottom surface 5a. It has a flanged protrusion 7 which will be described later in detail. The cylindrical body 5 is obtained as a molded product of relatively soft synthetic rubber, synthetic resin, etc.,
An elastic force sufficient for contraction and extension during a knocking operation is applied to the bellows-shaped telescopic tube portion 6. The protrusion 7 has a leg portion 7a having a height substantially equal to the wall thickness of the head wall 3a of the cap 3 and an outer diameter substantially equal to the inner diameter of the head hole 4, and a collar 7b having an outer diameter larger than the inner diameter of the head hole 4. It also has a bottomed hole 7c in the center of which a bush 8 of approximately the same diameter is fitted. The knock cap A of the present invention comprises a cap 3, a tubular body 5 and a bush 8. The tip of the tubular body 5 is a barrel 1.
It is attached to the rear end of the barrel 1 of the main body of the knocking writing instrument by abutting on the rear end.
次に上述せる実施例におけるノックキャップＡの組み付
け及び作用効果について説明する。まず，キャップ３の
後方より筒体５を外嵌し，そして突起７を頭孔４に嵌合
し，鍔７ｂを頭壁３ａの内面に係止させる。この時の突
起７の頭孔４への嵌合は，突起７が有底孔７ｃの存在で
変形し易いようになっていることから容易に行なえる。
次いでキャップ３の前方内側よりブッシュ８を挿入し，
頭孔４に嵌合係止された状態にある突起７の有底孔７ｃ
に嵌合する。このブッシュ８の有底孔７ｃへの嵌合で
は，ブッシュ８が孔７ｃと略同径であることから若干の
変形は伴なうものの突起７の外形はあまり変化すること
はないが，突起７はブッシュ８の嵌合でその脚部７ａを
頭孔４に密に嵌合し，鍔７ｂを頭壁３ａの内面に確実に
係止され，しかも内方に撓みにくい状態なるので，突起
７の嵌合及び係止をより強化して確実なものとなすとと
もに，突起７の内方撓みをブッシュ８で阻止して筒体５
の外れを防止することができる。Next, the assembling of the knock cap A in the above-mentioned embodiment and the function and effect will be described. First, the tubular body 5 is externally fitted from the rear of the cap 3, the projection 7 is fitted in the head hole 4, and the collar 7b is locked to the inner surface of the head wall 3a. At this time, the projection 7 can be fitted into the head hole 4 easily because the projection 7 is easily deformed due to the presence of the bottomed hole 7c.
Next, insert the bush 8 from the front inside of the cap 3,
The bottomed hole 7c of the protrusion 7 that is fitted and locked in the head hole 4
To fit. When the bush 8 is fitted into the bottomed hole 7c, since the bush 8 has a diameter substantially the same as that of the hole 7c, the outer shape of the protrusion 7 does not change so much although the deformation is accompanied, but the protrusion 7 does not change much. Is fitted with the bush 8 so that the leg portion 7a is tightly fitted in the head hole 4 and the collar 7b is securely locked to the inner surface of the head wall 3a, and further, it is difficult to bend inward. The fitting and locking are further strengthened to ensure reliability, and the inward bending of the protrusion 7 is blocked by the bush 8 to prevent the cylindrical body 5 from being bent.
Can be prevented from coming off.
第３図は本考案の第２実施例を示すもので，上述せる第
１実施例とはブッシュ８′に係止突部８ａ及び鍔８ｂを
設けた点で異なる。該第２実施例においても第１実施例
と同様の作用効果が基体できることに加え，ブッシュ
８′の抜けを前記係止突部８ａの有底孔７ｃ内面への喰
い込みで防止することができる。FIG. 3 shows a second embodiment of the present invention, which differs from the first embodiment described above in that a bushing 8'is provided with a locking projection 8a and a collar 8b. In the second embodiment as well, the same operational effect as in the first embodiment can be achieved, and the bush 8'can be prevented from coming off by the engagement protrusion 8a with the inner surface of the bottomed hole 7c. .
（考案の効果） 以上の如く，本考案によれば，キャップの頭孔に嵌合係
止された筒体の鍔付突起に該突起に形成された孔と略同
径のブッシュを嵌合することで，突起７の嵌合係止をよ
り強化して確実なものとなすとともに，突起７の内方撓
みをブッシュで阻止して筒体の外れを防止することがで
きるので，取り付け後はノック操作を繰り返しても筒体
はキャップより外れることはない。また，ブッシュも表
面に露出しなく，而して所期の目的である外観効果を満
足し得，実用に供し得る優れたノック式筆記具における
ノックキャップ構造を提供することができる。(Effects of the Invention) As described above, according to the present invention, the bush having substantially the same diameter as the hole formed in the protrusion is fitted to the flanged protrusion of the cylindrical body fitted and locked in the head hole of the cap. As a result, the fitting and locking of the protrusion 7 can be further strengthened to make it more reliable, and the inward bending of the protrusion 7 can be blocked by the bush to prevent the tubular body from coming off. The cylinder does not come off the cap even if the operation is repeated. Further, the bush is not exposed on the surface, and thus the desired external appearance effect can be satisfied, and an excellent knock cap structure for a knock-type writing instrument that can be put to practical use can be provided.
第１図は本考案の第１実施例を示す縦断面図、第２図は
第１図の要部分解縦断面図、第３図は他の実施例を示す
縦断面図、第４図は従来例を示す縦断面図である。 １……軸筒，２……可動部，Ａ……ノックキャップ， ３……キャップ，４……頭孔，５……筒体， ６……伸縮筒部，７……突起，７ｂ……鍔， ７ｃ，７ｃ′……有底孔，８……ブッシュ。FIG. 1 is a vertical sectional view showing a first embodiment of the present invention, FIG. 2 is an exploded vertical sectional view of an essential part of FIG. 1, FIG. 3 is a vertical sectional view showing another embodiment, and FIG. It is a longitudinal cross-sectional view showing a conventional example. 1 ... Shaft cylinder, 2 ... Movable part, A ... Knock cap, 3 ... Cap, 4 ... Head hole, 5 ... Cylindrical body, 6 ... Telescopic cylinder part, 7 ... Protrusion, 7b ... Tsuba, 7c, 7c '... bottomed hole, 8 ... Bush.
Claims (1)
部に装着してなるノック式筆記具のノックキャップ構造
において、前記ノックキャップを、筆記具本体の可動部
に嵌合するキャップと、該キャップに形成された頭孔に
嵌合係止し得る鍔付突起を底面に有し、かつ蛇腹状の伸
縮筒部を有する筒体と、前記鍔付突起に形成された有底
孔に圧入嵌合される、該有底孔と略同径の大きなブッシ
ュとで構成し、該ブッシュを前記筒体の内側より挿入
し、突起に形成された有底孔に圧入したことを特徴とす
るノック式筆記具のノックキャップ構造。1. A knock cap structure for a knock-type writing instrument, wherein a bellows-shaped telescopic tube portion is attached to a rear end portion of a shaft tube of the writing instrument body, and the knock cap is a cap fitted to a movable portion of the writing instrument body. A cylindrical body having a bellows-like telescopic cylinder part on the bottom surface, which has a flanged projection capable of being fitted and locked in a head hole formed in the cap, and a bottomed hole formed in the flanged projection. It is characterized in that it is composed of a bush having a diameter substantially the same as that of the bottomed hole and press-fitted, the bush is inserted from the inside of the cylindrical body, and is press-fitted into the bottomed hole formed in the protrusion. Knock cap structure for knock writing instruments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986200737U JPH0628310Y2 (en) | 1986-12-27 | 1986-12-27 | Knock cap structure for knock writing instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986200737U JPH0628310Y2 (en) | 1986-12-27 | 1986-12-27 | Knock cap structure for knock writing instruments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63106687U JPS63106687U (en) | 1988-07-09 |
| JPH0628310Y2 true JPH0628310Y2 (en) | 1994-08-03 |
Family
ID=31163531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986200737U Expired - Lifetime JPH0628310Y2 (en) | 1986-12-27 | 1986-12-27 | Knock cap structure for knock writing instruments |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628310Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4961651U (en) * | 1972-09-08 | 1974-05-30 | ||
| JPS576585U (en) * | 1980-06-11 | 1982-01-13 | ||
| JPS5826582U (en) * | 1981-08-14 | 1983-02-19 | 株式会社 寿 | Knot part of Knot type writing instrument |
-
1986
- 1986-12-27 JP JP1986200737U patent/JPH0628310Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63106687U (en) | 1988-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH09175077A (en) | Grip of writing implement | |
| JP2566092Y2 (en) | Double writing instrument | |
| JPH0628310Y2 (en) | Knock cap structure for knock writing instruments | |
| JPH0628309Y2 (en) | Knock cap structure for knock writing instruments | |
| JP6523512B2 (en) | Writing instrument | |
| JPH0742793Y2 (en) | Writing cap attachment structure | |
| JPH028795Y2 (en) | ||
| JP2519017Y2 (en) | Out-of-the-box writing instrument | |
| JP2566093Y2 (en) | Double writing instrument | |
| JPH0545516Y2 (en) | ||
| JPH088872Y2 (en) | Writing instrument cap | |
| JPS6113357Y2 (en) | ||
| JP6833794B2 (en) | Haunting multi-core writing tool | |
| JP2513979Y2 (en) | Rotating writing instrument | |
| JPH0143277Y2 (en) | ||
| JPH0524558Y2 (en) | ||
| JPS6229273Y2 (en) | ||
| JPS6111017Y2 (en) | ||
| JPS5852147Y2 (en) | Notsuku style writing instrument | |
| JP2513395Y2 (en) | Writing instrument | |
| JPH0810531Y2 (en) | Small tube writing instrument | |
| JPH0617976U (en) | Writing instrument tail plug | |
| JPH1044685A (en) | Multi-lead writing implement | |
| JPS6316553Y2 (en) | ||
| JPH0532312Y2 (en) |