JPS581430Y2 - bicycle frame - Google Patents
bicycle frameInfo
- Publication number
- JPS581430Y2 JPS581430Y2 JP1978084935U JP8493578U JPS581430Y2 JP S581430 Y2 JPS581430 Y2 JP S581430Y2 JP 1978084935 U JP1978084935 U JP 1978084935U JP 8493578 U JP8493578 U JP 8493578U JP S581430 Y2 JPS581430 Y2 JP S581430Y2
- Authority
- JP
- Japan
- Prior art keywords
- main pipe
- chainstay
- hanger lug
- bicycle frame
- notch
- 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
Description
【考案の詳細な説明】
本考案はメインパイプと、このメインパイプに固定され
たハンガーラッグと、チェーンステーとを備えた自転車
フレームに関するもので、特にチェーンステーの構造を
改良することにより、ハンガーラッグの構造を簡略化す
るとともに、部品点数の削減をはかり、しかもメインパ
イプとハンガーラッグ及びチェーンステーの十分な接合
強度を得ることを目的とする。[Detailed description of the invention] The present invention relates to a bicycle frame equipped with a main pipe, a hanger lug fixed to the main pipe, and a chainstay. The purpose is to simplify the structure of the main pipe, reduce the number of parts, and obtain sufficient joint strength between the main pipe, hanger lug, and chainstay.
以下、本考案をその実施例を示す図面にもとづいて説明
する。Hereinafter, the present invention will be explained based on drawings showing embodiments thereof.
第１図において、１はへラドラッグ２を一端に固定した
略Ｕ字状のメインパイプで、他端にはサドル（図示せず
）を固定する金具３を取り付けている。In FIG. 1, reference numeral 1 denotes a substantially U-shaped main pipe with a HeraDrag 2 fixed to one end, and a metal fitting 3 for fixing a saddle (not shown) to the other end.
４はシートステーで、このシートステー４の後端は後輪
（図示せず）の軸支部５に取り付けられ、かつ前端はサ
ドル固定用金具３に取り付けられている。Reference numeral 4 denotes a seat stay, and the rear end of the seat stay 4 is attached to a shaft support 5 of a rear wheel (not shown), and the front end is attached to a saddle fixing metal fitting 3.
６はメインパイプ１の途中に設けられ、かつ駆動に関係
するクランク軸（図示せず）を取り付けるハンガーラッ
グで、両端開口の円筒状に構成している。A hanger lug 6 is provided in the middle of the main pipe 1 and has a cylindrical shape with openings at both ends to which a crankshaft (not shown) related to driving is attached.
７はチェーンステーで、このチェーンステー７の後端は
シートステー４と同様後輪（図示せず）の軸支部５に取
り付けられている。Reference numeral 7 denotes a chainstay, and the rear end of the chainstay 7, like the seatstay 4, is attached to the shaft support 5 of the rear wheel (not shown).
また前端は、チェーンステーを構成する円形パイプの内
部に板状の挿入片８を入れて縦板状に押圧加工している
。Further, the front end is press-processed into a vertical plate shape by inserting a plate-shaped insertion piece 8 inside the circular pipe that constitutes the chainstay.
この場合、押圧部９の後端は、上部は円形パイプ部を多
く残して板状部を短くし、かつ下部は板状部を長くして
チェーンステー７の軸心に対して傾斜した押しつぶし形
状にしている。In this case, the rear end of the pressing part 9 has a pressed shape that is inclined with respect to the axis of the chainstay 7 by leaving a large circular pipe part in the upper part and shortening the plate part, and lengthening the plate part in the lower part. I have to.
また抑圧部９の前端は、メインパイプ１の中心両側部の
近傍に沿うように切断し、さらに抑圧部９の下面にはハ
ンガーラッグ６の周面と同等の曲率半径を有する円弧状
の切欠き部１０を設けている。The front end of the suppressing part 9 is cut along both sides of the center of the main pipe 1, and the lower surface of the suppressing part 9 has an arc-shaped notch with a radius of curvature equivalent to the circumferential surface of the hanger lug 6. A section 10 is provided.
そしてこのチェーンステー７は抑圧部９の切欠き部１０
をハンガーラッグ６の上面に沿わせるとともに、押圧部
９の一部側面をメインパイプ１の中心両側部に沿わせて
、それぞれを溶接により接合する。This chainstay 7 has a notch 10 in the suppressing part 9.
along the upper surface of the hanger lug 6, and part of the side surfaces of the pressing part 9 along both sides of the center of the main pipe 1, and are joined by welding.
従来の自転車フレームにおけるチェーンステ一部の構造
は、第２図に示すように、ハンガーラッグ１１に一対の
枝部１２を設け、この枝部１２にチェーンステー１３の
端部を嵌入固定するとともに、ハンガーラッグ１１の上
部とメインパイプ１４の側面とに補強板１５を固定して
、両者を強固に保持するようにしていた。As shown in FIG. 2, the structure of a part of the chainstay in a conventional bicycle frame is such that a hanger lug 11 is provided with a pair of branches 12, and the ends of a chainstay 13 are fitted and fixed into these branches 12. A reinforcing plate 15 is fixed to the upper part of the hanger lug 11 and the side surface of the main pipe 14 to firmly hold both.
しかし、この構造によれば、部品点数が多く、またハン
ガーラッグ１１の構造も複雑となるため大量生産に適さ
ず、コスト高となっていた。However, according to this structure, the number of parts is large and the structure of the hanger lug 11 is complicated, so it is not suitable for mass production and the cost is high.
しかるに本考案によれば、上記構成からも明らかなよう
に、チェーンステーは端部を縦板状に抑圧加工して抑圧
部を形成し、かつこの押圧部の下面には切欠き部を設け
、この切欠き部をハンガーラッグの上面に沿わせて接合
するとともに、押圧部の一部側面をメインパイプの側面
に接合するようにしているため、メインパイプとハンガ
ーラッグ及びチェーンステーの十分な接合強度が得られ
、しかもハンガーラッグの構造は単に円筒状に構成する
のみでよく、また従来における補強板も不要となるため
、組立作業ならびにコスト的にもすぐれたものを提供す
ることができる。However, according to the present invention, as is clear from the above structure, the ends of the chainstay are pressed into a vertical plate shape to form a suppressed part, and the lower surface of this pressed part is provided with a notch, This notch is joined along the top surface of the hanger lug, and a part of the side of the pressing part is joined to the side of the main pipe, ensuring sufficient joint strength between the main pipe, hanger lug, and chainstay. Moreover, since the structure of the hanger lug only needs to be cylindrical, and the conventional reinforcing plate is not required, it is possible to provide an item that is superior in terms of assembly work and cost.
第１図は本考案の一実施例を示す自転車フレームの斜視
図、第２図は従来の自転車フレームの斜視図である。
１・・・・・・メインパイプ、６・・・・・・ハンガー
ラッグ、７・・・・・・チェーンステー、９・・・・・
・押圧部、１０・・−・・・切欠き部。FIG. 1 is a perspective view of a bicycle frame showing an embodiment of the present invention, and FIG. 2 is a perspective view of a conventional bicycle frame. 1... Main pipe, 6... Hanger lug, 7... Chain stay, 9...
- Pressing part, 10...notch part.
Claims (1)
ッグと、チェーンステーとを備え、前記チェーンステー
は端部を縦板状に抑圧加工して抑圧部を形成し、かつこ
の押圧部の下面には切欠き部を設け、この切欠き部をハ
ンガーラッグの上面に沿わせて接合するとともに、抑圧
部の一部側面をメインパイプの側面に接合してなる自転
車フレーム。The chain stay includes a main pipe, a hanger lug provided on the main pipe, and a chainstay, and the end of the chainstay is pressed into a vertical plate shape to form a suppressed part, and a cut is provided on the lower surface of the pressed part. This bicycle frame is formed by providing a notch, joining the notch along the top surface of the hanger lug, and joining a part of the side surface of the suppressing part to the side surface of the main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978084935U JPS581430Y2 (en) | 1978-06-20 | 1978-06-20 | bicycle frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978084935U JPS581430Y2 (en) | 1978-06-20 | 1978-06-20 | bicycle frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS551550U JPS551550U (en) | 1980-01-08 |
| JPS581430Y2 true JPS581430Y2 (en) | 1983-01-11 |
Family
ID=29008092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978084935U Expired JPS581430Y2 (en) | 1978-06-20 | 1978-06-20 | bicycle frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS581430Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4716650U (en) * | 1971-03-31 | 1972-10-26 | ||
| JPS4833170U (en) * | 1971-08-23 | 1973-04-21 |
-
1978
- 1978-06-20 JP JP1978084935U patent/JPS581430Y2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4716650U (en) * | 1971-03-31 | 1972-10-26 | ||
| JPS4833170U (en) * | 1971-08-23 | 1973-04-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS551550U (en) | 1980-01-08 |
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