JPH01158365U

JPH01158365U -

Info

Publication number: JPH01158365U
Application number: JP5577188U
Authority: JP
Priority date: 1988-04-25
Filing date: 1988-04-25
Publication date: 1989-11-01
Anticipated expiration: 2003-04-25
Also published as: JPH0742895Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図および第３図はそれぞれ第１図と異なる状態を
示す要部の正面図、第４図、第５図はそれぞれ連
結ピン４１と長穴３９ａの左端部３９ｂとの位置
を説明するための正面図である。１……シエル、２……パワーピストン、４……
定圧室、５……変圧室、６……バルブボデイ、７
……弁機構、１５……通路、１６……電磁弁（停
車保持手段）、２５……入力軸、３９……クレビ
ス、３９ａ……長穴、３９ｂ……端部、４０……
ブレーキペダル、４１……連結ピン、４２，４３
……弾性部材。 Fig. 1 is a sectional view showing one embodiment of the present invention;
3 and 3 are respectively front views of main parts showing states different from those in FIG. It is a diagram. 1... Ciel, 2... Power Piston, 4...
Constant pressure chamber, 5... Variable pressure chamber, 6... Valve body, 7
... Valve mechanism, 15 ... Passage, 16 ... Solenoid valve (stopping holding means), 25 ... Input shaft, 39 ... Clevis, 39a ... Long hole, 39b ... End, 40 ...
Brake pedal, 41... Connection pin, 42, 43
...Elastic member.

Claims

[Scope of Claim for Utility Model Registration] A power piston that is slidably provided within the shell, a constant pressure chamber and a variable pressure chamber that are formed on the front and rear sides of the power piston in the operating direction, and a variable pressure chamber that is provided on the shaft of the power piston. A valve mechanism housed in a valve body that switches the flow path, an input shaft that operates this valve mechanism, an elongated hole provided in either one of the input shaft or the brake pedal, and an elongated hole provided in the other with the above-mentioned length. A connecting pin that engages with the hole and advances the input shaft by abutting against the end of the elongated hole when the brake pedal is depressed, and a connecting pin that holds the input shaft in the forward position even after the brake pedal is released and doubles the brake. and stop holding means for maintaining the brake pedal in an operating state, and when the input shaft is held in the forward position by the stop holding means, the elongated hole allows the brake pedal to return to the non-operating position. In the brake booster, a pair of elastic members are attached at a predetermined interval to the contact portion of the connecting pin and the end of the elongated hole that contact each other when the brake pedal is depressed, and the elastic members are attached at a predetermined distance. An elastic member is interposed between the connecting pin and the end of the elongated hole, and when the connecting pin and the end of the elongated hole are pressed with a pressing force of a predetermined value or more, the elastic member is elastically deformed. A brake booster characterized in that the connecting pin and the end of the elongated hole are brought into contact with each other through a gap between the pair of elastic members.