JPS58144128U

JPS58144128U - Cast iron drum for drum brakes

Info

Publication number: JPS58144128U
Application number: JP4221782U
Authority: JP
Inventors: 秀雄井上
Original assignee: トヨタ自動車株式会社
Priority date: 1982-03-24
Filing date: 1982-03-24
Publication date: 1983-09-28

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図は本考案の第１実施例に係るドラムブレーキ用鉄
板鋳込ドラムの背面図、第２図は第１図の■−■線に沿
う展開断面図、第３図は鉄板鋳込ドラムにおける鉄板部
の内周縁部に生じる歪−位相角線図である。また第４図
は本考案の第２実施例に係るドラムブレーキ用鉄板鋳込
ドラムの背面図である。符号の説明、１０．２０・・・ドラムブレーキ用鉄　へ
板鋳込ドラム、１１．２１・・・鉄板部、１１ａ。２１ａ・・・ホイールハブへの取付孔、１２．　２２・
・・鋳鉄部、１２ａ、２２ａ・・・凸部、凹部、Ａ、　
Ｂ・・・熱だまり。第４図Fig. 1 is a rear view of the iron plate casting drum for drum brakes according to the first embodiment of the present invention, Fig. 2 is a developed sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is the iron plate casting drum. FIG. 3 is a strain-phase angle diagram that occurs at the inner peripheral edge of the iron plate portion in FIG. Further, FIG. 4 is a rear view of a cast iron drum for a drum brake according to a second embodiment of the present invention. Explanation of symbols, 10.20... Drum brake iron plate casting drum, 11.21... Iron plate part, 11a. 21a... Attachment hole to wheel hub, 12. 22・
...Cast iron part, 12a, 22a... Convex part, concave part, A,
B... Heat pool. Figure 4

Claims

[Scope of utility model registration request]

In a cast iron drum for a drum brake, which comprises a disc-shaped iron plate part having a mounting hole for a wheel hub, and a cylindrical cast iron part cast on the outer periphery of the iron plate part, the outer periphery of the iron plate part A cast iron drum for a drum brake, wherein an odd number of heat pools are formed by integrally molding a plurality of convex portions or concave portions at approximately equal intervals in the circumferential direction on a part of the cast iron portion.