JPS63133488U - - Google Patents
Info
- Publication number
- JPS63133488U JPS63133488U JP2669587U JP2669587U JPS63133488U JP S63133488 U JPS63133488 U JP S63133488U JP 2669587 U JP2669587 U JP 2669587U JP 2669587 U JP2669587 U JP 2669587U JP S63133488 U JPS63133488 U JP S63133488U
- Authority
- JP
- Japan
- Prior art keywords
- crank device
- gear crank
- square
- bracket
- tightening
- 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.)
- Pending
Links
- 229910001234 light alloy Inorganic materials 0.000 claims 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Gears, Cams (AREA)
Description
第１図及び第２図は本考案に係るギヤクランク
装置の断面図と側面図、第３図は同装置の分解斜
視図、第４図及び第５図は従来のギヤクランク装
置をそれぞれ示す断面図である。
２０……ブラケツト軸、２０ａ……角状部分、
２１……支持部、２２……ライトコーン、２３…
…レフトコーン、２６……ハンガーラツク、２８
……チエーンスプロケツト、２９……クランク、
３０……ボス部、３０Ａ，３０Ｂ……ボス半部、
３１……キヤツプ付ボルト、３２……分割穴、３
３ａ，３３ｂ……ねじ穴、３４……締付ボルト。
1 and 2 are a sectional view and a side view of a gear crank device according to the present invention, FIG. 3 is an exploded perspective view of the same device, and FIGS. 4 and 5 are cross sections showing a conventional gear crank device, respectively. It is a diagram. 20... Bracket shaft, 20a... Corner part,
21...Support part, 22...Light cone, 23...
...Left corn, 26...Hanger rack, 28
...Chain sprocket, 29...Crank,
30...Boss part, 30A, 30B...Boss half part,
31... Bolt with cap, 32... Divided hole, 3
3a, 33b...screw holes, 34...tightening bolts.
Claims (1)
、該ブラケツト軸の両端に角穴を有するボス部が
嵌合される軽合金から成る一対のクランクと、前
記ブラケツト軸を回転自在に支持する支持部とを
備える自転車用ギヤクランク装置において、前記
ボス部に前記角穴に連通して設けられ、該ボス部
を二分割する分割穴と、該ボス部の各分割部を前
記分割穴を介して締付ける締付具とを含むことを
特徴とする自転車用ギヤクランク装置。 ２ 前記締付具は前記各分割部に螺入される締付
ボルトであることを特徴とする実用新案登録請求
の範囲第１項に記載の自転車用ギヤクランク装置
。[Claims for Utility Model Registration] 1. A bracket shaft having square ends, a pair of cranks made of a light alloy into which bosses having square holes are fitted at both ends of the bracket shaft, and the bracket A bicycle gear crank device comprising: a support portion that rotatably supports a shaft; a dividing hole provided in the boss portion in communication with the square hole and dividing the boss portion into two; A bicycle gear crank device, comprising: a fastener for tightening the part through the split hole. 2. The gear crank device for a bicycle according to claim 1, wherein the tightening tool is a tightening bolt that is screwed into each of the divided portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2669587U JPS63133488U (en) | 1987-02-25 | 1987-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2669587U JPS63133488U (en) | 1987-02-25 | 1987-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63133488U true JPS63133488U (en) | 1988-08-31 |
Family
ID=30828017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2669587U Pending JPS63133488U (en) | 1987-02-25 | 1987-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63133488U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7234373B2 (en) | 2001-11-23 | 2007-06-26 | Shimano, Inc. | Bicycle crank axle with a radial projection |
| US7686721B2 (en) | 2005-05-11 | 2010-03-30 | Shimano Inc. | Bicycle chainring |
| US7856903B2 (en) | 2001-11-23 | 2010-12-28 | Shimano, Inc. | Bicycle crank axle with a radial projection |
| WO2011096633A3 (en) * | 2010-02-04 | 2011-11-03 | 에스에스오토엔지니어링(주) | Position control device of crank arm of bicycle |
-
1987
- 1987-02-25 JP JP2669587U patent/JPS63133488U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7234373B2 (en) | 2001-11-23 | 2007-06-26 | Shimano, Inc. | Bicycle crank axle with a radial projection |
| US7856903B2 (en) | 2001-11-23 | 2010-12-28 | Shimano, Inc. | Bicycle crank axle with a radial projection |
| US7686721B2 (en) | 2005-05-11 | 2010-03-30 | Shimano Inc. | Bicycle chainring |
| WO2011096633A3 (en) * | 2010-02-04 | 2011-11-03 | 에스에스오토엔지니어링(주) | Position control device of crank arm of bicycle |