JPH02129988U - - Google Patents
Info
- Publication number
- JPH02129988U JPH02129988U JP3893089U JP3893089U JPH02129988U JP H02129988 U JPH02129988 U JP H02129988U JP 3893089 U JP3893089 U JP 3893089U JP 3893089 U JP3893089 U JP 3893089U JP H02129988 U JPH02129988 U JP H02129988U
- Authority
- JP
- Japan
- Prior art keywords
- crankshaft
- fitted
- mounting base
- chain receiver
- 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
Landscapes
- Gears, Cams (AREA)
Description
第１図は第５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
に係るチエン受け具の側面図、第４図は第３図の
−線断面図、第５図は実施例に係るギヤクラ
ンクの外側面図、第６図は従来列を示した図であ
る。
１…クランク軸、４…ハンガ部、５…クランク
アーム、５ａ…基端ボス部、６７…大径スプロケ
ツト、８…インナスプロケツト（最小径スプロケ
ツト）、９…チエン受け具、９ａ…取付け基部、
９ｂ…チエン受け本体部。
Figure 1 is a diagram corresponding to the - line cross section of Figure 5;
Fig. 2 is a view in the direction of the arrow in Fig. 1, Fig. 3 is a side view of the chain receiver according to the embodiment, Fig. 4 is a sectional view taken along the - line in Fig. 3, and Fig. 5 is the gear according to the embodiment The outside view of the crank, FIG. 6, is a diagram showing a conventional row. 1... Crank shaft, 4... Hanger part, 5... Crank arm, 5a... Base end boss part, 67... Large diameter sprocket, 8... Inner sprocket (minimum diameter sprocket), 9... Chain receiver, 9a... Mounting base,
9b...Chain receiver main body.
Claims (1)
も１枚の小径スプロケツトとを有するとともに、
クランクアームの基端ボス部をハンガ部から突出
するクランク軸の軸端部に套嵌支持させてなる自
転車用ギヤクランクにおいて、 クランク軸の軸端部に套嵌される略筒状の取付
け基部と、この取付け基部の内端部から上記ハン
ガ部と上記基端ボス部との間を半径方向外方に延
出して、先端部が最も内側に配置されるインナス
プロケツトの内側方に位置する略円板状のチェン
受け本体部とを有するチエン受け具を設け、 このチエン受け具クランクアームの基端ボス部
の軸支孔とこれに嵌挿されるクランク軸との間に
上記取付け基部を差し込んで取付けたことを特徴
とする、自転車用ギヤクランク。[Claims for Utility Model Registration] Having at least one large diameter sprocket and at least one small diameter sprocket,
In a bicycle gear crank in which the base end boss portion of the crank arm is fitted and supported on the shaft end of the crankshaft that protrudes from the hanger portion, a substantially cylindrical mounting base that is fitted on the shaft end of the crankshaft; , extending radially outward between the hanger part and the proximal end boss part from the inner end of the mounting base, and having a distal end located approximately inward of the innermost sprocket disposed innermost. A chain receiver having a disc-shaped chain receiver main body is provided, and the mounting base is inserted between the shaft support hole of the proximal boss portion of the chain receiver crank arm and the crankshaft to be fitted into the shaft support hole. A bicycle gear crank, which is characterized by the fact that it is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3893089U JPH02129988U (en) | 1989-03-31 | 1989-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3893089U JPH02129988U (en) | 1989-03-31 | 1989-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02129988U true JPH02129988U (en) | 1990-10-26 |
Family
ID=31547376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3893089U Pending JPH02129988U (en) | 1989-03-31 | 1989-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02129988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200447756Y1 (en) * | 2009-05-14 | 2010-02-16 | 삼천리자전거 주식회사 | The crank assembly of the bicycle |
-
1989
- 1989-03-31 JP JP3893089U patent/JPH02129988U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200447756Y1 (en) * | 2009-05-14 | 2010-02-16 | 삼천리자전거 주식회사 | The crank assembly of the bicycle |