JPH0585683U - Anti-shake device for writing tip - Google Patents

Abstract

(57)【要約】 【目的】 鉛筆タイプ及びノック式筆記具において、筆
記時に筆記先端部が軸筒先端部の先端孔に当接しておこ
るガタツキ音を防止する。 【構成】 筆記先端部３の適宜位置に凹溝４を設け、軸
筒１先端部の内径とほぼ等しい外径の弾性を有するＯリ
ング５を前記凹溝４に嵌着してなるもの。 (57) [Abstract] [Purpose] To prevent rattling noise that occurs when the writing tip of a pencil-type and knock-type writing instrument contacts the tip hole of the tip of the barrel during writing. [Structure] A concave groove 4 is provided at an appropriate position of the writing tip portion 3, and an O-ring 5 having elasticity having an outer diameter substantially equal to the inner diameter of the tip portion of the barrel 1 is fitted into the concave groove 4.

Description

【考案の詳細な説明】[Detailed description of the device]

【０００１】[0001]

【産業上の利用分野】[Industrial applications]

本考案は鉛筆タイプ及びノック式筆記具の筆記時における筆記先端部のガタつ き防止に関する。 The present invention relates to prevention of rattling of a writing tip when writing with a pencil type or knock type writing instrument.

【０００２】[0002]

【従来の技術】[Prior Art]

従来、ボールペン等の出没機構をそなえた筆記具或いは、鉛筆タイプの筆記先 端部が固定されたボールペンにおいては、筆記先端部の先端外径より僅かに大径 の先端孔より筆記先端部を出没或いは突出させていた。 Conventionally, in a writing instrument having a retractable mechanism such as a ballpoint pen or a ball-point pen having a pencil-type writing tip end fixed, the writing tip is projected or retracted through a tip hole slightly larger than the tip outer diameter of the writing tip. It was protruding.

【０００３】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら上記従来のものは、筆記時において筆記先端部外径より僅かに軸 筒の先端孔内径が大きい為にガタツキの原因となり、特に先端が金属の場合ガタ ツキ音を生じたりして不快感を与えるなどの欠点があった。又、このガタツキを なくすためには、筆記先端部の外径及び、軸筒の先端孔の内径における寸法は大 変な精度を要求される。 However, the above-mentioned conventional type causes rattling because the inner diameter of the tip hole of the barrel is slightly larger than the outer diameter of the writing tip when writing, and there is rattling noise especially when the tip is metal, which causes discomfort. There were drawbacks such as giving. In addition, in order to eliminate this rattling, the outer diameter of the writing tip and the inner diameter of the tip hole of the barrel need to be highly accurate.

【０００４】[0004]

【課題を解決するための手段】[Means for Solving the Problems]

本考案による筆記先端部の振れ防止装置は、これらの欠点を解決するものであ り、筆記先端部の適宜位置に凹溝を設け、この凹溝に軸筒先端部の内径とほぼ等 しい外径の弾性を有するＯリングを嵌着してなるものである。 The device for preventing shake of the writing tip according to the present invention solves these drawbacks.A groove is provided at an appropriate position on the writing tip, and the groove has an outer diameter approximately equal to the inner diameter of the tip of the barrel. It is formed by fitting an O-ring having diameter elasticity.

【０００５】[0005]

【作用】[Action]

本考案は上記構成を持つので筆記先端部はＯリングと軸筒内壁とが当接し、Ｏ リングが緩衝材となるので、筆記時にガタツクことがなくなり、更にＯリングは 凹溝に嵌着されるので、ノック式の場合にノック操作によるＯリングの前後への 移動も防止することができる。 Since the present invention has the above-described structure, the O-ring and the inner wall of the shaft contact each other at the writing tip portion, and the O-ring serves as a cushioning material, so that there is no rattling during writing, and the O-ring is fitted into the groove. Therefore, in the case of the knock type, it is possible to prevent the O-ring from moving back and forth due to the knock operation.

【０００６】[0006]

【実施例】【Example】

本考案による筆記先端部の振れ防止装置の一実施例を、図面について説明する と、軸筒１内に筆記部２を先端から突出させて収納した筆記先端部３の後方の外 側面に環状の凹溝４を刻設し、軸筒１先端部の内径とほぼ等しい外径の弾性を有 するＯリング５を前記凹溝４を嵌着してなるものであり、軸筒１内壁と筆記先端 部３との間にＯリング５を介在させることにより、筆記時に筆記先端部３が軸筒 １の先端孔６に当接して発生するガタツキ音を防止することができ、ノック式筆 記具に使用した場合には、ガタツキ音を防止すると同時に、Ｏリング５は凹溝４ に嵌着されるので、ノック操作によるＯリングの前後への移動も防止することが できる。 An embodiment of a device for preventing shake of a writing tip according to the present invention will be described with reference to the drawings. An annular shape is provided on the outer side surface behind the writing tip 3 in which a writing section 2 is housed in a barrel 1 so as to project from the tip. A groove 4 is formed, and an O-ring 5 having an outer diameter that is substantially equal to the inner diameter of the tip of the barrel 1 is fitted in the groove 4, and the inner wall of the barrel 1 and the writing tip are fitted. By interposing the O-ring 5 between it and the portion 3, it is possible to prevent the rattling sound generated when the writing tip portion 3 comes into contact with the tip hole 6 of the barrel 1 during writing, and a knock type writing instrument is provided. When used, the rattling noise can be prevented, and at the same time, the O-ring 5 is fitted in the concave groove 4, so that the O-ring can be prevented from moving back and forth due to a knocking operation.

【０００７】[0007]

【考案の効果】[Effect of the device]

上述のとおり、本考案による筆記先端部の振れ防止装置は、筆記時に筆記部が ガタツクことがなくなりガタツキ音が防止することができるものである。 As described above, the device for preventing shake of the writing tip according to the present invention prevents rattling of the writing portion during writing and prevents rattling noise.

【０００８】[0008]

【図面の簡単な説明】[Brief description of drawings]

【図１】本考案による筆記先端部の振れ防止装置の要部
の断面図である。FIG. 1 is a cross-sectional view of a main part of a device for preventing shake of a writing tip according to the present invention.

【符号の説明】[Explanation of symbols]

１ 軸筒 ２ 筆記部 ３ 筆記先端部 ４ 凹溝 ５ Ｏリング ６ 先端孔 1 Shaft cylinder 2 Writing part 3 Writing tip part 4 Concave groove 5 O-ring 6 Tip hole

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 筆記先端部の適宜位置に凹溝を設け、軸
筒先端部の内径とほぼ等しい外径の弾性を有するＯリン
グを前記凹溝に嵌着してなる筆記先端部の振れ防止装
置。1. A wobbling prevention of a writing tip formed by providing a concave groove at an appropriate position of the writing tip and fitting an O-ring having an outer diameter substantially equal to the inner diameter of the barrel tip into the groove. apparatus.