JPH01174647U

JPH01174647U -

Info

Publication number: JPH01174647U
Application number: JP7132388U
Authority: JP
Priority date: 1988-05-30
Filing date: 1988-05-30
Publication date: 1989-12-12
Anticipated expiration: 2003-05-30
Also published as: JPH0534345Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示す構成図、第
２図はロータの振動周波数と振幅との関係を示す
線図、第３図はロータ振動周波数と各圧力変動と
の関係を示す線図、第４図は本考案の第２実施例
を示す構成図である。１Ｌ，１Ｒ…キヤリパ、１ａ…円筒部、２Ｌ，
２Ｒ…ロータ、３Ｌ，３Ｒ…外側シリンダ、４Ｌ
，４Ｒ…内側シリンダ、５Ｌ，５Ｒ…外側シリン
ダ穴、６Ｌ，６Ｒ…内側シリンダ穴、７Ｌ，７Ｒ
…外側ピストン、８Ｌ，８Ｒ…内側ピストン、９
…ブレーキパツド、１０Ｌ，１０Ｒ…外側圧力室
、１１Ｌ，１１Ｒ…内側圧力室、１２Ｌ，１２Ｒ
…連通路、２０…車体側部材、２１…内筒、２２
…ラバー。 Fig. 1 is a block diagram showing the first embodiment of the present invention, Fig. 2 is a diagram showing the relationship between rotor vibration frequency and amplitude, and Fig. 3 is a diagram showing the relationship between rotor vibration frequency and each pressure fluctuation. The diagram and FIG. 4 are block diagrams showing a second embodiment of the present invention. 1L, 1R...Caliper, 1a...Cylindrical part, 2L,
2R...rotor, 3L, 3R...outer cylinder, 4L
, 4R...Inner cylinder, 5L, 5R...Outer cylinder hole, 6L, 6R...Inner cylinder hole, 7L, 7R
...Outer piston, 8L, 8R...Inner piston, 9
...Brake pad, 10L, 10R...Outer pressure chamber, 11L, 11R...Inner pressure chamber, 12L, 12R
...Communication path, 20...Vehicle body side member, 21...Inner cylinder, 22
…rubber.

Claims

[Claims for Utility Model Registration] (1) A cylinder and a piston that is fitted into a hole in the cylinder so as to be able to move forward and backward and whose tip is in contact with a brake pad are provided on both sides of a rotor that rotates together with the wheel, Opposing cylinder type disc brakes in which the pressure chambers on both sides defined between the cylinder and the piston communicate with each other are disposed corresponding to at least one of the left and right wheels of the front wheels or the rear wheels, and the pressure chambers communicate with each other. A disc brake characterized in that the volumes of the communication passages that communicate with each other are made different between the opposing cylinder type disc brakes corresponding to the left and right wheels, respectively. (2) A cylinder and a piston fitted into a hole in the cylinder so as to be movable and retractable and having a brake pad in contact with the tip thereof are provided on both sides of a rotor that rotates together with the wheel, and there is a space between the cylinder and the piston. Opposed cylinder disc brakes in which the pressure chambers on both sides communicate with each other are arranged corresponding to at least one of the front wheels or the rear wheels, and the cylinders on both sides of the rotor are attached to the vehicle body. The brake is formed in one caliper, and further, the spring constant in the direction perpendicular to the rotational direction of the rotor between the caliper and the vehicle body is made different between the opposing cylinder type disc brakes corresponding to the left and right wheels, respectively. Disc brake.