JPS60137245U

JPS60137245U - Disc brake piston

Info

Publication number: JPS60137245U
Application number: JP2506784U
Authority: JP
Inventors: 丸矢　一夫; 洋田畑; 石黒　敏之
Original assignee: 日産自動車株式会社
Priority date: 1984-02-23
Filing date: 1984-02-23
Publication date: 1985-09-11

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−図は従来のディスクブレーキの要部断面図、第２
図は従来の１°ストンの斜視図、第３図は本考案のピス
トンの斜視図、第４図は第１の実施例のピストンをディ
スクブレーキに装着した状態を示すディスクブレーキの
要部断面図、第５図は第２の実施例のピストンの平面図
、第６図は第５図の■−■断面図、−第７図は第２の実
施例の細形状のピストンの平面図、第８図は第７図の■
−■断面図である。１・・・ディスク、２・・・ブレーキパッド、３・・・
摩擦材、４・・・裏金、５・・・ピストン、７・・・シ
ール、８・・・シリンダー、８ａ・・・シールを装着す
る溝、１１゜１３．１５・・・ピストン、１２・・・中
空部、１４・・・ディンプル、１６・・・溝。Figure 1 is a sectional view of the main parts of a conventional disc brake;
The figure is a perspective view of a conventional 1° stone, Figure 3 is a perspective view of the piston of the present invention, and Figure 4 is a sectional view of the main part of the disc brake, showing the state in which the piston of the first embodiment is attached to the disc brake. , FIG. 5 is a plan view of the piston of the second embodiment, FIG. 6 is a sectional view taken along the line ■-■ of FIG. 5, and FIG. 7 is a plan view of the narrow-shaped piston of the second embodiment. Figure 8 is the ■ of Figure 7.
−■ It is a sectional view. 1... Disc, 2... Brake pad, 3...
Friction material, 4... Back metal, 5... Piston, 7... Seal, 8... Cylinder, 8a... Groove for installing seal, 11° 13.15... Piston, 12...・Hollow part, 14... dimple, 16... groove.

Claims

[Scope of utility model registration request]

(1) A piston facing the back of the brake pad is slidably fitted into the cylinder formed in the caliper body, and a sealing member for sealing between the piston and the cylinder is attached to the inner surface of the cylinder or the outer peripheral surface of the piston. In a disc brake arranged in a carved groove, the piston is molded from synthetic resin, and a hollow f is formed on the end surface opposite to the brake pad.
, π, and a portion in contact with a sealing member is formed solid.

(2) A piston for a disc brake according to claim 1, which is a registered utility model, characterized in that a concave portion of 232 is formed on the surface of the bottom of the piston on the brake pad side.

(3) A piston for a disc brake according to claim 1 or FJ2, wherein the synthetic resin is a phenolic resin.