JPS6292994U - - Google Patents
Info
- Publication number
- JPS6292994U JPS6292994U JP18641985U JP18641985U JPS6292994U JP S6292994 U JPS6292994 U JP S6292994U JP 18641985 U JP18641985 U JP 18641985U JP 18641985 U JP18641985 U JP 18641985U JP S6292994 U JPS6292994 U JP S6292994U
- Authority
- JP
- Japan
- Prior art keywords
- thread
- crankshaft
- crank
- crank arm
- screw
- 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
Landscapes
- Transmission Devices (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
第１図は本考案の一実施例を示す要部のみの拡
大断面図、第２図は別の実施例を示す要部のみの
断面図である。
１……クランク軸、１１……ねじ、１２……嵌
合部、２……クランクアーム、２１……嵌合孔、
２２……内ねじ、３……螺合体、３１……ねじ、
３２……回転操作部、３３……外ねじ。
FIG. 1 is an enlarged sectional view of only the essential parts showing one embodiment of the present invention, and FIG. 2 is a sectional view of only the essential parts showing another embodiment. 1... Crankshaft, 11... Screw, 12... Fitting portion, 2... Crank arm, 21... Fitting hole,
22... Internal thread, 3... Threaded assembly, 31... Screw,
32... Rotation operation unit, 33... External screw.
Claims (1)
外周に嵌合部１２を設けて、該嵌合部１２に、嵌
合孔２１をもつたクランクアーム２を挿嵌し、前
記ねじ１１に、該ねじ１１に螺合するねじ３１と
回転操作部３２とをもつた螺合体３を螺合して固
定する如くした自転車用ギヤクランクであつて、
前記クランク軸１の嵌合部１２に嵌合する前記ク
ランクアーム２の嵌合孔２１の外側に内ねじ２２
を設けると共に、前記螺合体３の外周に、前記内
ねじ２２に螺合する外ねじ３３を設けて、これら
内ねじ２２及び外ねじ３３を、前記螺合体３の前
記クランク軸１のねじ１１への螺進時、前記クラ
ンクアーム２をクランク軸１に対し嵌合方向に強
制移動させる螺合関係としたことを特徴とする自
転車用ギヤクランク。 A fitting part 12 is provided on the outer periphery of the shaft end of the crankshaft 1 having a screw 11 at the shaft end, and a crank arm 2 having a fitting hole 21 is inserted into the fitting part 12. A bicycle gear crank is provided in which a threaded body 3 having a screw 31 that is threadedly engaged with the screw 11 and a rotary operation portion 32 is threadedly fixed.
An internal thread 22 is provided on the outside of the fitting hole 21 of the crank arm 2 that fits into the fitting part 12 of the crankshaft 1.
At the same time, an outer thread 33 is provided on the outer periphery of the threaded body 3 to be threaded into the inner thread 22, and these inner thread 22 and outer thread 33 are connected to the thread 11 of the crankshaft 1 of the threaded body 3. A gear crank for a bicycle, characterized in that the crank arm 2 is forcibly moved in the fitting direction with respect to the crankshaft 1 when the crank arm 2 is screwed into the crank shaft 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18641985U JPS6292994U (en) | 1985-12-02 | 1985-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18641985U JPS6292994U (en) | 1985-12-02 | 1985-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6292994U true JPS6292994U (en) | 1987-06-13 |
Family
ID=31135958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18641985U Pending JPS6292994U (en) | 1985-12-02 | 1985-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6292994U (en) |
-
1985
- 1985-12-02 JP JP18641985U patent/JPS6292994U/ja active Pending
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