JPH065915Y2 - Writing body appearance / disappearance mechanism in notch type writing instruments - Google Patents
Writing body appearance / disappearance mechanism in notch type writing instrumentsInfo
- Publication number
- JPH065915Y2 JPH065915Y2 JP13713687U JP13713687U JPH065915Y2 JP H065915 Y2 JPH065915 Y2 JP H065915Y2 JP 13713687 U JP13713687 U JP 13713687U JP 13713687 U JP13713687 U JP 13713687U JP H065915 Y2 JPH065915 Y2 JP H065915Y2
- Authority
- JP
- Japan
- Prior art keywords
- shaft cylinder
- writing
- hole
- locking projection
- 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.)
- 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】 「産業上の利用分野」 本案は、ノック式筆記具における筆記体出没機構に係わ
るものであって、当該係止用突部の摺動及び係脱に配慮
した出没機構の改良に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a writing body retracting mechanism in a knock-type writing instrument, and is related to a retracting mechanism that considers sliding and engagement / disengagement of the locking projection. Regarding improvement.
「従来技術と本案が解決しようとする問題点」 従来からノック式筆記具における筆記体出没機構に関す
るものの存在は広く知られているが、軸筒後端開口部側
に突出している押し部材を押圧することにより、筆記体
筆端部を軸筒前端開口部から露出させるものが、一般的
であって、筆端部の出没は、押し部材に形成した軸筒中
心から外方へ弾発する係止用突部を軸筒の境界部の前後
に設けた透孔に係脱させたものが多い。この場合、露出
した筆端部を没入させるには、係止用突部を係合してい
る透孔から離脱するまで軸筒の内方へ押圧してやらなけ
れば筆記体を没入状態にすることができないため、指に
よる係止用突部の押圧量及び押圧力がかなり必要とされ
かつ、操作上わずらわしさがあり問題となっている。"Problems to be solved by the prior art and the present proposal" It is widely known that there is a writing body retracting mechanism in a knock-type writing instrument, but the pushing member protruding toward the rear end opening side of the barrel is pressed. Therefore, the writing brush writing end is generally exposed from the front end opening of the barrel, and the protruding and retracting of the writing end is a protrusion for locking that is elastically outward from the center of the barrel formed on the pressing member. Many of them are engaged with and disengaged from through holes provided in the front and rear of the boundary portion of the shaft cylinder. In this case, in order to immerse the exposed writing end portion, the writing body cannot be put into the immersing state unless the locking projection is pushed inward of the barrel until it is disengaged from the engaging through hole. Therefore, a considerable amount of pressing force and pressing force of the locking projection by the finger are required, and it is troublesome in operation, which is a problem.
「問題解決のための手段」 本案は、これらの従来技術の状態の解消を意図し、軸筒
に設けた境界部に軸筒の軸心方向へ延びる空隙部を形成
するとともに、押し部材の係止用突部に前記空隙部の幅
より幅広の部分と幅狭の部分を形成しかつ、係止用突部
が軸筒の外方へ弾発しきったとき、その幅広の部分が空
隙部の前後に設けた透孔のいずれかに係合している状態
になるようにすることをもって問題解決のための手段と
している。"Means for Solving Problems" The present invention intends to eliminate the above-mentioned state of the art, and forms a void portion extending in the axial direction of the shaft cylinder in the boundary portion provided in the shaft cylinder, and at the same time, relates to the push member. When the locking protrusion is formed with a wider portion and a narrower portion than the width of the void portion and the locking protrusion has springed out of the shaft cylinder, the wide portion of the void portion A means for solving the problem is to be in a state of engaging with one of the through holes provided in the front and rear.
「作用」 本案によれば、筆記状態にあるときの係止用突部の上部
つまり、軸筒に設けた前方透孔の後端面に当接する位置
で軸筒から突出している係止用突部の上部を軸筒の内方
へ向って押圧することにより、前方透孔の後端面に当接
する係止用突部の幅広の部分が、当該後端面より離脱す
る。境界部の空隙部は、係止用突部の幅狭の部分より幅
が広いので係止用突部の幅狭の部分は、その空隙部を通
過し後方透孔側へ移動し、やがて、係止用突部は自らの
軸筒外方への弾発によって、後方透孔の後端面にその幅
広の部分を当接して筆記状態を解除する。このように、
筆記状態から筆記体を軸筒内に没入させるには、前方透
孔の後端面に当接している係止用突部の幅広の部分のみ
を当該後端面から離脱させればよいので、少ない押圧量
と小さな押圧力により筆端部の没入作動が実現する。[Operation] According to the present invention, the locking projection protruding from the shaft cylinder at the position where it contacts the upper part of the locking projection in the writing state, that is, the rear end face of the front through hole provided in the shaft cylinder. By pressing the upper part of the inward toward the inner side of the barrel, the wide portion of the locking projection that abuts the rear end surface of the front through hole is separated from the rear end surface. Since the void part of the boundary part is wider than the narrow part of the locking projection part, the narrow part of the locking projection part passes through the void part and moves to the rear through hole side, and eventually, The locking projection releases its writing state by abutting a wide portion of the rear projection on the rear end surface of the rear through-hole by elastically propelling the locking projection outward. in this way,
In order to immerse the writing body in the barrel from the writing state, only the wide portion of the locking projection that is in contact with the rear end surface of the front through hole needs to be disengaged from the rear end surface. The amount of writing and the small pressing force enable the pen tip to immerse.
「実施例」 以下、本案の実施例を図面に基づいて説明する。[Examples] Examples of the present invention will be described below with reference to the drawings.
押し部材3は、軸筒後端開口部1bから押圧部8を突出
するとともに軸筒外方へ弾発する係止用突部4を設けて
ある。軸筒1の境界部5には、軸筒の軸心方向へ延びる
空隙部5aが形成され、係止用突部4には、この空隙部
5aの幅よりも幅広の部分4aと幅狭の部分4bが形成
されている。係止用突部4は、軸心方向における前後に
空隙部5aと連通して穿設した前方透孔6と後方透孔7
に交互に係脱するものであって、押し部材3の押圧部8
を軸筒前端開口部1a方向へ押圧することによって、係
止用突部4はその前端部4′を円弧状にしてあるので、
大きな抵抗力を受けることなく空隙部5aの入口5bを
とおって前方透孔6に係合する。このとき、コイルスプ
リングSの弾発力で軸筒後端開口部1b方向へ付勢され
て押し部材3と当接する筆記体2は軸筒前端開口部1a
方向へ弾発力に抗して移動させられ、その筆端部2aを
当該開口部1aから露出させて筆記状態を実現する。し
かして、筆記状態にあるときの係止用突部4はその幅広
の部分4aを前方透孔6の後端面6aに当接させつつ、
軸筒外方へ弾発しきった状態になっている。筆端部2a
を軸筒1内に没入させるには、筆記状態において、係止
用突部の幅狭の部分4bの上部を軸筒の内方へ向って押
してやればよくかくすることによって、係止用突部4は
その幅広の部分4aを前方透孔6の後端面6aから離脱
し、コイルスプリングSの弾発力によって付勢されてい
る筆記体2の後退移動とともに軸筒後端開口部1b方向
へ移動する。このとき、係止用突部4の幅狭の部分4b
は空隙部5aを通過し、これにともない、係止用突部4
はその幅広の部分4aを後方透孔7の後端面7aに当接
させかつ、軸筒の外方へ弾発しきった状態になる。かく
して、筆記体の筆端部2は軸筒1内に没入する。The pushing member 3 is provided with a locking projection 4 which projects the pressing portion 8 from the rear end opening 1b of the barrel and elastically springs outward of the barrel. A space 5a extending in the axial direction of the shaft cylinder is formed in the boundary 5 of the shaft cylinder 1, and the locking projection 4 has a portion 4a wider than the width of the space 5a and a narrower width. The portion 4b is formed. The locking projection 4 is provided with a front through hole 6 and a rear through hole 7 which are formed in front and rear in the axial direction so as to communicate with the void 5a.
Which are alternately engaged with and disengaged from
Since the locking projection 4 has an arcuate front end 4'by pressing the shaft end toward the front end opening 1a of the barrel,
The front through hole 6 is engaged through the inlet 5b of the void 5a without receiving a large resistance force. At this time, the cursive body 2 that is urged by the elastic force of the coil spring S toward the rear end opening 1b of the shaft cylinder and abuts against the pushing member 3 is the front end opening 1a of the shaft cylinder.
The writing end 2a is moved in the direction against the elastic force, and the writing end 2a is exposed from the opening 1a to realize the writing state. In the writing state, the locking projection 4 has its wide portion 4a abutted against the rear end surface 6a of the front through hole 6,
It is in a state where it has blasted out to the outside of the barrel. Brush end 2a
In order to immerse the locking projection into the barrel 1, it is sufficient to push the upper part of the narrow portion 4b of the locking projection inwardly of the barrel in the writing state, and thereby the locking protrusion is pushed. The wide portion 4a of the portion 4 is detached from the rear end surface 6a of the front through hole 6 and moves toward the rear end opening portion 1b of the axial cylinder along with the backward movement of the writing body 2 biased by the elastic force of the coil spring S. Moving. At this time, the narrow portion 4b of the locking projection 4
Passes through the void 5a, and along with this, the locking projection 4
The wide portion 4a is brought into contact with the rear end surface 7a of the rear through hole 7 and is in a state of being fully bulged out of the barrel. Thus, the writing end portion 2 of the cursive body is immersed in the barrel 1.
「考案の効果」 以上のとおり、本案は軸筒の境界部にその軸心方向へ延
びる空隙部を形成するとともに、この空隙部の前後の透
孔に係脱する係止用突部に空隙部より幅広の部分と幅狭
の部分を形成しかつ、係止用突部がその幅広の部分を前
後の透孔のいずれかに係合したとき、軸筒の外方へ弾発
しきった状態になるようにしてなるものであるから、筆
記体の筆端部を軸筒内に没入させる際、係止用突部の幅
狭の部分の上部を軽く軸筒の内方に向って押圧するだけ
で、その没入状態が実現し、従来のものに比べて係止用
突部に対する軸筒の内方への押圧量と押圧力が少なくて
よいことになり、係止用突部の弾発性にも耐久性が得ら
れるなど簡便にしてかつ、確実な作動が期待できる筆記
体出没機構の実現が安直に可能になる。[Advantage of the Invention] As described above, according to the present invention, the boundary portion of the shaft cylinder is formed with the void extending in the axial direction, and the void is formed in the locking projections engaging and disengaging the through holes in the front and rear of the void. A wider part and a narrower part are formed, and when the locking projection engages the wide part with one of the front and rear through holes, it is in a state of being fully bulged out of the barrel. Therefore, when the writing end of the cursive body is immersed in the barrel, simply press the upper part of the narrow part of the locking projection toward the inside of the barrel. , The immersive state is realized, and the inward pressing amount and the pressing force for the locking projection with respect to the locking projection are less than those of the conventional ones, and the elasticity of the locking projection is improved. Also, it is possible to easily realize a cursive body retracting mechanism that can be expected to operate reliably and easily, such as durability.
第1図は、本案を実施した筆記具全体について説示した
縦断面図、第2図は第1図において筆記体が軸筒外に露
出した状態を説示した一部断面上面図である。 1……軸筒、2……筆記体、 3……押し部材、4……係止用突部、 4a……幅広の部分、4b……幅狭の部分、 5……境界部、5a……空隙部、 6……前方透孔、6a……後端面、 7……後方透孔、7a……後端面、 8……押圧部。FIG. 1 is a vertical cross-sectional view illustrating the entire writing instrument embodying the present invention, and FIG. 2 is a partial cross-sectional top view illustrating the state in which the writing body is exposed outside the barrel in FIG. 1 ... Shaft cylinder, 2 ... Writing body, 3 ... Pushing member, 4 ... Locking protrusion, 4a ... Wide part, 4b ... Narrow part, 5 ... Boundary part, 5a ... ... void, 6 ... front through hole, 6a ... rear end surface, 7 ... rear through hole, 7a ... rear end surface, 8 ... pressing portion.
Claims (1)
して収容した筆記体2を軸筒後端開口部1b側から押し
部材3を押圧するとともに、押し部材3に形成した軸筒
1の外方へ弾発する係止用突部4を軸筒1に設けた前方
透孔6と、後方透孔7に係脱させて、その筆端部2aを
軸筒前端開口部1aから出没させるノック式筆記具にお
いて、前記軸筒1の透孔6,7と連通する境界部5に軸
筒の軸心方向へ延びる空隙部5aを形成するとともに押
し部材3の係止用突部4に前記空隙部5aの幅より幅広
の部分4aと幅狭の部分4bを形成しかつ、係止用突部
4が弾発しきったとき、当該幅広の部分4aが後方透孔
7の後端面7aまたは、前方透孔6の後端面6aのいず
れかに当接する位置にあるように設定したことを特徴と
するノック式筆記具における筆記体出没機構。1. A writing body 2, which is accommodated in a shaft cylinder 1 by being biased toward a shaft cylinder rear end opening portion 1b, presses a pushing member 3 from the shaft cylinder rear end opening portion 1b side, and at the same time, pushes it on the pushing member 3. The locking projection 4 that elastically springs outward of the formed shaft cylinder 1 is engaged with and disengaged from the front through hole 6 and the rear through hole 7 provided in the shaft cylinder 1, and the writing end 2a thereof is opened at the front end of the shaft cylinder. In the knock-type writing instrument which is projected from and retracted from the lathe 1a, a gap 5a extending in the axial direction of the shaft cylinder is formed in a boundary portion 5 communicating with the through holes 6 and 7 of the shaft cylinder 1, and a projection for locking the pushing member 3 is formed. 4 has a portion 4a wider than the width of the void 5a and a portion 4b narrower than the width of the gap 5a, and when the locking projection 4 is fully elastic, the wide portion 4a is the rear end surface of the rear through hole 7. 7a or the rear end surface 6a of the front through hole 6 is set so as to be in a position to be in contact with the knock type writing. Cursive haunt mechanism in.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13713687U JPH065915Y2 (en) | 1987-09-08 | 1987-09-08 | Writing body appearance / disappearance mechanism in notch type writing instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13713687U JPH065915Y2 (en) | 1987-09-08 | 1987-09-08 | Writing body appearance / disappearance mechanism in notch type writing instruments |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6442185U JPS6442185U (en) | 1989-03-14 |
JPH065915Y2 true JPH065915Y2 (en) | 1994-02-16 |
Family
ID=31398286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13713687U Expired - Lifetime JPH065915Y2 (en) | 1987-09-08 | 1987-09-08 | Writing body appearance / disappearance mechanism in notch type writing instruments |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH065915Y2 (en) |
-
1987
- 1987-09-08 JP JP13713687U patent/JPH065915Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6442185U (en) | 1989-03-14 |
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