JPS613062U

JPS613062U - vehicle brake cylinder

Info

Publication number: JPS613062U
Application number: JP7279785U
Authority: JP
Inventors: 朝雄中野
Original assignee: 株式会社ナブコ
Priority date: 1985-05-15
Filing date: 1985-05-15
Publication date: 1986-01-09

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 drawings]

図は本考案の一実施例を示す断面図である。１・・・シリンダ組立体、２・・・空圧用シリンダ部（
空圧用ハウジング）、３・・・液圧用シＩ）ンダ体、７
・・・空圧用ピストン（可動部材）、１０・・・無圧室
、１０ａ・・・凹所、１９・・・液圧用シリンダ孔、２
４・・・液圧用ピストン、之５・・・大径頭部、２−６
・・・小径頭部、２７・・・低液圧室、２８・・・高液
圧室、４４・・・圧 −力逃し弁。The figure is a sectional view showing an embodiment of the present invention. 1... Cylinder assembly, 2... Pneumatic cylinder part (
Pneumatic housing), 3... Hydraulic cylinder I) cylinder body, 7
... Pneumatic piston (movable member), 10... No pressure chamber, 10a... Recess, 19... Hydraulic cylinder hole, 2
4... Hydraulic piston, 5... Large diameter head, 2-6
...Small diameter head, 27...Low hydraulic pressure chamber, 28...High hydraulic pressure chamber, 44...Pressure relief valve.

Claims

[Scope of utility model registration request]

A cylinder assembly including a pneumatic housing and a raw hydraulic cylinder body on the same axis, and a pressure chamber that is movably disposed within the pneumatic housing and is supplied with pressurized fluid sent out from a brake valve. and atmospheric pressure, (c) a movable member that separates a pressureless chamber to be held, a return spring disposed in the pressureless chamber and pressing the movable member toward the pressure chamber, and a hydraulic cylinder body. a hydraulic piston slidably fitted into a hydraulic cylinder hole provided and driven by the movable member; In the vehicle brake cylinder that generates hydraulic pressure according to fluid pressure from a Brenniki valve, the movable member and the hydraulic piston are connected so as to move forward and backward in unison, and the hydraulic cylinder hole and the hydraulic piston are connected to each other so as to move forward and backward in unison. has a stepped shape, and defines a low pressure chamber between the large diameter head and the small diameter head of the hydraulic piston, and a high pressure chamber on the small diameter side of the hydraulic cylinder and hole of the small diameter head. ,
The low hydraulic pressure chamber is connected to a liquid reservoir via a pressure relief valve, and the low hydraulic pressure chamber and the high hydraulic pressure chamber are pressurized until the hydraulic pressure beyond the low hydraulic pressure reaches a predetermined value. When the hydraulic pressure in the low hydraulic pressure chamber becomes equal to or higher than a predetermined value, the pressure liquid in the low hydraulic pressure chamber is released to the pressure relief valve. The liquid is discharged into a liquid reservoir so that the pressurizing effect is performed only in the high liquid pressure chamber, and the pneumatic pressure cylinder is formed by extending it to the outer periphery of the liquid pressure cylinder. A brake cylinder for a vehicle, wherein a cavity is formed that is continuous with the inner number of the pneumatic housing and the no-pressure chamber, and the return spring can be compressed and accommodated in the cavity.