JPS60100287U - bicycle gear crank - Google Patents

bicycle gear crank

Info

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
Application number
JP19393983U
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 JP19393983U priority Critical patent/JPS60100287U/en
Publication of JPS60100287U publication Critical patent/JPS60100287U/en
Pending legal-status Critical Current

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

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

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)

【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. .
JP19393983U 1983-12-15 1983-12-15 bicycle gear crank Pending JPS60100287U (en)

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)

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