JPH02129986U - - Google Patents
Info
- Publication number
- JPH02129986U JPH02129986U JP3892889U JP3892889U JPH02129986U JP H02129986 U JPH02129986 U JP H02129986U JP 3892889 U JP3892889 U JP 3892889U JP 3892889 U JP3892889 U JP 3892889U JP H02129986 U JPH02129986 U JP H02129986U
- Authority
- JP
- Japan
- Prior art keywords
- sprocket
- innermost
- bicycle gear
- diameter
- crank
- 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
- 238000010586 diagram Methods 0.000 description 2
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
Landscapes
- Gears, Cams (AREA)
Description
第４図の−線断面に相当する図、第２図は
第１図の矢視方向図、第３図は実施例に係る固
定ボルトの断面図、第４図は実施例に係るギヤク
ランクの外側面図、第５図は従来例を示した図で
ある。
５…クランクアーム、５ｂ…スプロケツト支持
部（スプロケツト支持アーム部）、６，７…大径
スプロケツト（最小径スプロケツト）、１１…（
イナスプロケツトの）固定ボルト、１１ａ…チエ
ン受け部（頭部）。
FIG. 2 is a view in the direction of the arrow in FIG. 1, FIG. 3 is a sectional view of the fixing bolt according to the embodiment, and FIG. 4 is a diagram of the gear crank according to the embodiment. The outside view, FIG. 5, is a diagram showing a conventional example. 5... Crank arm, 5b... Sprocket support part (sprocket support arm part), 6, 7... Large diameter sprocket (minimum diameter sprocket), 11... (
) fixing bolt of flathead sprocket, 11a...chain receiving part (head).
Claims (1)
も１枚の小径スプロケツトとを有し、最も内側に
配置されるインナスプロケツトを、クランクアー
ムの基端部から一体的に半径方向外方に延成され
たスプケツト支持部に、円周方向に所定間隔をあ
けて配設する複数のボルトによってボルト止めし
てなる自転車用ギヤクランクであって 上記イン
ナスプロケツトの固定ボルトを、上記インナスプ
ロケツトの内側面からクランク軸方向内方に所定
長さ突出させて、インナスプケツトの内方にチエ
ン受け部を設けたことを持徴とする、自転車用ギ
ヤクランク。 The sprocket has at least one large-diameter sprocket and at least one small-diameter sprocket, and the innermost sprocket is an innermost sprocket that integrally extends radially outward from the base end of the crank arm. A bicycle gear crank which is bolted to a support part with a plurality of bolts arranged at predetermined intervals in the circumferential direction, the fixing bolt of the inner sprocket being fixed to the inner sprocket from the inner surface of the inner sprocket. A bicycle gear crank characterized by a chain receiving part provided inside an inner spket by protruding a predetermined length inward in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3892889U JPH02129986U (en) | 1989-03-31 | 1989-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3892889U JPH02129986U (en) | 1989-03-31 | 1989-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02129986U true JPH02129986U (en) | 1990-10-26 |
Family
ID=31547372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3892889U Pending JPH02129986U (en) | 1989-03-31 | 1989-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02129986U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200447756Y1 (en) * | 2009-05-14 | 2010-02-16 | 삼천리자전거 주식회사 | Crank assembly of bicycle |
-
1989
- 1989-03-31 JP JP3892889U patent/JPH02129986U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200447756Y1 (en) * | 2009-05-14 | 2010-02-16 | 삼천리자전거 주식회사 | Crank assembly of bicycle |
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