JPS6173441U

JPS6173441U -

Info

Publication number: JPS6173441U
Application number: JP15772584U
Authority: JP
Priority date: 1984-10-20
Filing date: 1984-10-20
Publication date: 1986-05-19

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す系統図、第
２図は補助マスタシリンダを拡大して示す断面図
、第３図はオートトランスミツシヨンの従来構造
を示す模式図である。１：ブレーキペダル、２：マスタシリンダ、３
：主ブレーキ油路、３ａ：マスタシリンダ側主ブ
レーキ油路、３ｂ：ブレーキ装置側主ブレーキ油
路、４：ブレーキ装置、５：補助マスタシリンダ
、８：ピストン部材、８ｂ：第１ピストン体、８
ｃ：第２ピストン体、８ｄ：環状油路、９：第１
油圧室、１０：第２油圧室、１２：弁部材、１８
：副ブレーキ油路、１９：油圧源、２０：シフト
レバー、２１：検出スイツチ装置、２２：車速検
出器、２４：分岐油路、２５：電磁開閉弁、２６
：コントローラ、ＳＷ_１，ＳＷ_２：検出スイツチ
。 FIG. 1 is a system diagram showing an embodiment of this invention, FIG. 2 is a sectional view showing an enlarged auxiliary master cylinder, and FIG. 3 is a schematic diagram showing the conventional structure of an autotransmission. 1: Brake pedal, 2: Master cylinder, 3
: Main brake oil path, 3a: Main brake oil path on the master cylinder side, 3b: Main brake oil path on the brake device side, 4: Brake device, 5: Auxiliary master cylinder, 8: Piston member, 8b: First piston body, 8
c: second piston body, 8d: annular oil passage, 9: first
Hydraulic chamber, 10: Second hydraulic chamber, 12: Valve member, 18
: Sub-brake oil path, 19: Hydraulic pressure source, 20: Shift lever, 21: Detection switch device, 22: Vehicle speed detector, 24: Branch oil path, 25: Electromagnetic on-off valve, 26
: Controller, SW ₁ , SW ₂ : Detection switch.

Claims

[Scope of utility model registration request]

A main brake oil path connecting the master cylinder and the brake device, and a main brake oil path provided in the main brake oil path,
Under normal conditions, the main brake oil passage on the master cylinder side and the main brake oil passage on the brake equipment side are communicated, and the stroke of the piston accompanying the supply of pressure oil closes the main brake oil passage on the master cylinder side, and the main brake oil passage on the brake equipment side is An auxiliary master cylinder that generates pressure oil in the brake oil passage, an auxiliary brake oil passage that connects the auxiliary master cylinder to a hydraulic power source, and an electromagnetic opening/closing system that controls the supply of pressure oil from the hydraulic source to the auxiliary brake oil passage. A detection switch device that detects a switching operation between forward and backward movement of a shift lever of an auto transmission, a vehicle speed detector that detects that the vehicle traveling speed is higher than a predetermined speed, and a detection signal of the vehicle speed detector. and a controller that sends a signal to operate an electromagnetic on-off valve upon receiving a detection signal from a detection switch device.