JPS6072393U - bicycle gear crank - Google Patents

bicycle gear crank

Info

Publication number
JPS6072393U
JPS6072393U JP16581183U JP16581183U JPS6072393U JP S6072393 U JPS6072393 U JP S6072393U JP 16581183 U JP16581183 U JP 16581183U JP 16581183 U JP16581183 U JP 16581183U JP S6072393 U JPS6072393 U JP S6072393U
Authority
JP
Japan
Prior art keywords
gear crank
bicycle
bicycle gear
portions
shaft portion
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
Application number
JP16581183U
Other languages
Japanese (ja)
Inventor
杉野　安
Original Assignee
株式会社スギノテクノ
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社スギノテクノ filed Critical 株式会社スギノテクノ
Priority to JP16581183U priority Critical patent/JPS6072393U/en
Publication of JPS6072393U publication Critical patent/JPS6072393U/en
Pending legal-status Critical Current

Links

Landscapes

  • Axle Suspensions And Sidecars For Cycles (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

【図面の簡単な説明】[Brief explanation of the drawing]

第１，２図は本考案の第１実施例を示しており、第１図
は一部断面平面図、第２図は第１図の■−■線断面図、
第３図は第２実施例を示す一部断面図である。 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、１１
・・・筒軸体、１２・・・パイプ体、１４・・・補強リ
ブ部、１５・・・折曲部。Figures 1 and 2 show a first embodiment of the present invention, where Figure 1 is a partially sectional plan view, Figure 2 is a sectional view taken along the line ■-■ in Figure 1,
FIG. 3 is a partial sectional view showing the second embodiment. 1... Gear crank, 2, 3... Spiral shaft, 4...
Shaft portion, 5... Arm portion, 6... Gear engaging protrusion, 11
... Cylindrical shaft body, 12... Pipe body, 14... Reinforcement rib portion, 15... Bending portion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 螺軸部２，３を有すると共に一方の螺軸部２の外側にチ
ェーンギヤ７を嵌合可能な軸部４と、この軸部４の両端
から略り字形に折曲されて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、
前記アーム部５はパイプで形成され且つ少なくとも折曲
部１５には折曲角の増減を阻止する補強リブ部１４が形
成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 shaft portion 4 that is bent in an abbreviated shape from both ends of the shaft portion 4 in a radially outward direction. A bicycle gear crank having a pair of extended arm portions 5,
The gear crank for a bicycle is characterized in that the arm portion 5 is formed of a pipe, and at least the bending portion 15 is formed with a reinforcing rib portion 14 for preventing an increase or decrease in the bending angle.
JP16581183U 1983-10-25 1983-10-25 bicycle gear crank Pending JPS6072393U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16581183U JPS6072393U (en) 1983-10-25 1983-10-25 bicycle gear crank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16581183U JPS6072393U (en) 1983-10-25 1983-10-25 bicycle gear crank

Publications (1)

Publication Number Publication Date
JPS6072393U true JPS6072393U (en) 1985-05-22

Family

ID=30363167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16581183U Pending JPS6072393U (en) 1983-10-25 1983-10-25 bicycle gear crank

Country Status (1)

Country Link
JP (1) JPS6072393U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS454895Y1 (en) * 1966-08-15 1970-03-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS454895Y1 (en) * 1966-08-15 1970-03-07

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