JPS6234876Y2

JPS6234876Y2 -

Info

Publication number: JPS6234876Y2
Application number: JP2249482U
Authority: JP
Priority date: 1982-02-18
Filing date: 1982-02-18
Publication date: 1987-09-04
Also published as: JPS58124360U

Description

【考案の詳細な説明】本考案は、小型自転車から大型自転車まで広範
囲に用いることができるチエーンステー拡張器に
関するものである。[Detailed Description of the Invention] The present invention relates to a chainstay expander that can be used in a wide range of applications from small bicycles to large bicycles.

従来用いられているチエーンステー拡張器は26
インチの自転車を対象として製造されたものであ
り、近年需要が高まつてきた小型自転車に用いる
となると、不都合な面を有している。 The conventionally used chainstay dilator is 26
It was manufactured for inch-sized bicycles, and has some disadvantages when used for small-sized bicycles, of which demand has been increasing in recent years.

即ち、小型自転車では26インチの自転車に比べ
てチエーンステーが短いため、上記拡張器をチエ
ーンステー間に装着してチエーンステー間隔を、
タイヤの取付け及び取外しに十分なだけ広げる
と、チエーンステーと車体とのなす角度が26イン
チの自転車に比べて急角度となり、チエーンステ
ー拡張器が外れ、事故を起こすことも度々であつ
た。従つて、今では小型自転車の場合チエーンス
テー拡張器を用いず、車体を分解してタイヤの取
付け及び取外しを行なつている。 In other words, since the chain stays of small bicycles are shorter than those of 26-inch bicycles, the above expander is attached between the chain stays to reduce the chain stay spacing.
When the bicycle was widened enough to install and remove tires, the angle between the chainstay and the bicycle body was steeper than that of a 26-inch bicycle, and the chainstay expander would come off, often causing accidents. Therefore, in the case of small bicycles, the chainstay expander is no longer used, and tires are now installed and removed by disassembling the bicycle body.

そこで、叙上のような実情に鑑みて考案された
のが本願考案であり、その日的はチエーンステー
拡張器の可動部材に当接部材を回動自在に取付け
ることにより、小型自転車から大型自転車まで広
範囲に用いることができるチエーンステー拡張器
を提供するものである。 Therefore, the present invention was devised in view of the above-mentioned actual situation, and its purpose is to rotatably attach the abutment member to the movable member of the chain stay expander, so that it can be used from small bicycles to large bicycles. The present invention provides a chainstay dilator that can be used in a wide range of applications.

以下、図に基づいて一実施例を説明すると、本
考案に係るチエーンステー拡張器Ａは、第１図に
示すように可動部材１に設けられた凹溝１ａに当
接部材２の支軸４を遊嵌せしめたものである。該
当接部材２は支軸４を軸として回動し得る構成で
ある。支軸４は当接板３に凸設され、支軸４の軸
方向は当接板３に平行である。該当接板３はチエ
ーンステーに密接し得るように凹面３ａを有す
る。支軸４の両端面４ａ，４ａには螺子穴４ｂ，
４ｂが設けられ、支軸４を凹溝１ａに遊嵌後、係
止板５，５が座金６，６を介して螺子７，７で支
軸４の両端面４ａ，４ａに固着される。上記可動
部材１の凹溝１ａの両端部には、上記螺子７が頭
を突出しないように凹部１ｂ，１ｂが設けられて
いる。 Hereinafter, one embodiment will be described based on the drawings. As shown in FIG. It is loosely fitted. The contact member 2 is configured to be able to rotate around a support shaft 4. The support shaft 4 is provided in a protruding manner on the contact plate 3, and the axial direction of the support shaft 4 is parallel to the contact plate 3. The contact plate 3 has a concave surface 3a so that it can come into close contact with the chain stay. Both end surfaces 4a, 4a of the support shaft 4 have screw holes 4b,
4b is provided, and after the support shaft 4 is loosely fitted into the groove 1a, the locking plates 5, 5 are fixed to both end surfaces 4a, 4a of the support shaft 4 with screws 7, 7 via washers 6, 6. Recesses 1b, 1b are provided at both ends of the groove 1a of the movable member 1 so that the screw 7 does not protrude.

チエーンステー拡張器の使用方法を説明する
と、該チエーンステー拡張器を両チエーンステー
間に介在させ、固定部材８の凹部８ａを向こう側
のチエーンステーに当接するとともに、当接板３
の凹面３ａを手前のチエーンステーに当接し、ハ
ンドル９を回転することにより、両チエーンステ
ーの間隔を押し広げることができる。 To explain how to use the chainstay expander, the chainstay expander is interposed between both chainstays, the recess 8a of the fixing member 8 is brought into contact with the chainstay on the other side, and the contact plate 3
By bringing the concave surface 3a into contact with the front chain stay and rotating the handle 9, the distance between the two chain stays can be widened.

叙上の如く、本考案のチエーンステー拡張器は
当接部材を可動部材に設けた凹溝に遊嵌すること
により、当接部材を回動し得るようにし、チエー
ンステーと車体とのなす角度が増大しても、当接
部材がチエーンステーに密接したまま、チエーン
ステーの動きに追随し得るようにしたことを特徴
とするものである。そのためチエーンステーが短
い小型自転車に対しても、好都合に使用すること
ができる。 As mentioned above, the chainstay expander of the present invention allows the abutting member to rotate by loosely fitting the abutting member into the groove provided in the movable member, and the angle between the chainstay and the vehicle body is adjusted. The present invention is characterized in that the abutment member can follow the movement of the chainstay while remaining in close contact with the chainstay even if the Therefore, it can be conveniently used even for small bicycles with short chain stays.

本考案は新規な構成にしてその実用上の効果は
著大である。 The present invention has a novel configuration and its practical effects are significant.

[Brief explanation of the drawing]

第１図は本考案に係るチエーンステー拡張器の
一実施例を示す斜視図、第２図は一部分解斜視図
である。図面符号：１……可動部材、１ａ……凹溝、１
ｂ……凹部、２……当接部材、３……当接板、３
ａ……凹面、４……支軸、４ａ……端面、４ｂ…
…螺子穴、５……係止板、６……座金、７……螺
子、８……固定部材、８ａ……凹部。 FIG. 1 is a perspective view showing an embodiment of a chainstay dilator according to the present invention, and FIG. 2 is a partially exploded perspective view. Drawing code: 1...Movable member, 1a...Concave groove, 1
b... recess, 2... abutting member, 3... abutting plate, 3
a... Concave surface, 4... Support shaft, 4a... End surface, 4b...
...screw hole, 5...locking plate, 6...washer, 7...screw, 8...fixing member, 8a...recess.

Claims

[Claims for Utility Model Registration] 1. A chain stay expander comprising a fixed member 8 and a movable member 1, characterized in that a contact member 2 is rotatably attached to the movable member 1. dilator. 2. The chainstay expander according to claim 1, wherein the abutting member 2 comprises an abutting plate 3 and a support shaft 4 protruding from the abutting plate. 3. The chainstay dilator according to claim 1 or 2, wherein the movable member 1 has a groove 1a.