JPS60100287U - bicycle gear crank - Google Patents
bicycle gear crankInfo
- Publication number
- JPS60100287U JPS60100287U JP19393983U JP19393983U JPS60100287U JP S60100287 U JPS60100287 U JP S60100287U JP 19393983 U JP19393983 U JP 19393983U JP 19393983 U JP19393983 U JP 19393983U JP S60100287 U JPS60100287 U JP S60100287U
- Authority
- JP
- Japan
- Prior art keywords
- gear crank
- bicycle gear
- shaft
- shaft portion
- screw shaft
- 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
- Gears, Cams (AREA)
- Forging (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は全長鍛造材で形成した従来例を示す一部断面平
面図、第２図は全長パイプ材で形成した例を示す一部断
面平面図、第３〜６図は本考案の実施例を示しており１
、第３，４図は第１実施例を示す一部断面平面図と側面
図、第５図は第２実施例を示す一部断面平面図、第６図
は第３実施例を示す一部断面平面図である。
１・・・・・・ギヤクランク、２，３・・・・・・螺軸
部、４・・・。
・・・軸部、５・・・・・・アーム部、６・・・・・・
ギヤ係合突起、７・・・・・・チェーンギヤ。Fig. 1 is a partially sectional plan view showing a conventional example made of full-length forged material, Fig. 2 is a partially sectional plan view showing an example made of full-length pipe material, and Figs. 3 to 6 are examples of the present invention. It shows 1
, 3 and 4 are a partially sectional plan view and a side view showing the first embodiment, FIG. 5 is a partially sectional plan view showing the second embodiment, and FIG. 6 is a partially sectional plan view showing the third embodiment. FIG. 1... Gear crank, 2, 3... Spiral shaft, 4... ...Shaft part, 5...Arm part, 6...
Gear engagement protrusion, 7...Chain gear.
Claims (1)
ェーンギヤ７を嵌合可能な軸部４と、この軸部４の両端
から径外方向に延設された１対のアーム部５とを有する
自転車用ギヤクランクにおいて、前記軸部４は鍛造材で
形成され、前記アーム部５はパイプ材で形成されて軸部
４に溶着されていることを特徴とする自転車用ギヤクラ
ンク。A shaft portion 4 having screw shaft portions 2 and 3 and into which a chain gear 7 can be fitted on the outside of one of the screw shaft portions 2, and a pair of arms extending radially outward from both ends of the shaft portion 4. 5, wherein the shaft part 4 is made of a forged material, and the arm part 5 is made of a pipe material and welded to the shaft part 4. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19393983U JPS60100287U (en) | 1983-12-15 | 1983-12-15 | bicycle gear crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19393983U JPS60100287U (en) | 1983-12-15 | 1983-12-15 | bicycle gear crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60100287U true JPS60100287U (en) | 1985-07-08 |
Family
ID=30417002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19393983U Pending JPS60100287U (en) | 1983-12-15 | 1983-12-15 | bicycle gear crank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60100287U (en) |
-
1983
- 1983-12-15 JP JP19393983U patent/JPS60100287U/en active Pending
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