JPS588690U

JPS588690U - bicycle crank

Info

Publication number: JPS588690U
Application number: JP10313181U
Authority: JP
Inventors: 杉野　安
Original assignee: 株式会社杉野鉄工所
Priority date: 1981-07-09
Filing date: 1981-07-09
Publication date: 1983-01-20

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

[Brief explanation of the drawing]

第１図は本考案の実施例を示す平面図、第２図　　　−
は第１図■二■線断面図、第３図は芯材の平面図、−−
第４図は第３図ＩＶ−ＩＶ線断面図、第５図は鋳型の断
面図、第６図は使用状態を示す断面図である。　　　　
　−１・・・・・・クランク本体　３−６＠＠＠＠クラ
ンク軸取付札、４ｍｈａｍａｍペダル取付孔、５・・・
・・・芯材。 □補正　昭５６．１０．　７図面の簡単な説明を次のように補正する。明細書第７頁第２行の「断面図である。」を「断面図、
第７図及び第８図は孔周縁をバーニング加工した芯すの
平面図及び側面図である。」と補正する。Figure 1 is a plan view showing an embodiment of the present invention, Figure 2 -
Figure 1 is a sectional view on the line ■2■, Figure 3 is a plan view of the core material, --
4 is a sectional view taken along the line IV--IV in FIG. 3, FIG. 5 is a sectional view of the mold, and FIG. 6 is a sectional view showing the state of use.
-1...Crank body 3-6@@@@@Crankshaft mounting tag, 4mhamam pedal mounting hole, 5...
... Core material. □Correction October 1982. 7. Amend the brief description of the drawing as follows. In the second line of page 7 of the specification, “It is a cross-sectional view.” has been changed to “A cross-sectional view.”
FIGS. 7 and 8 are a plan view and a side view of a core whose hole periphery has been burnt. ” he corrected.

Claims

[Claims for Utility Model Registration] The crank body is made of lightweight material such as aluminum alloy or plasti, and has a pedal mounting hole at one end and a cool crankshaft mounting hole at the other end. This is characterized in that a plate-shaped or solid rod-shaped core material made of a metal material having a higher tensile strength than the "previous material" is integrally buried between the reattachment holes including the reattachment holes. bicycle crank. −? 1