UNDANPRESSNINGSKOLVENHET FOR ATT ASTADKOMMA EN VOLYMENDRING I EN HYDRAULISK BROMSLEDNING,申请号SE19730000559-传众专利搜索

UNDANPRESSNINGSKOLVENHET FOR ATT ASTADKOMMA EN VOLYMENDRING I EN HYDRAULISK BROMSLEDNING

申请公布号：SE392691(B)

申请号：SE19730000559

申请日期：1973.01.16

申请公布日期：1977.04.18

申请人：

TEVES GMBH ALFRED

发明人：BELART J

分类号：B60T8/42;(IPC1-7):60T8/02

主分类号：B60T8/42

摘要：This invention relates to a device for effecting a volume change in a hydraulic brake system equipped with an antiskid control system. The device includes a displacement piston assembly having several parts and offering pressure application surfaces for the control pressure in one direction and for the main pressure of the brake system in the other direction. The displacement piston assembly is arranged together with a separating valve within a blind bore of a one piece casing or housing. A radially elastic bushing is provided in the opening of the blind bore sealed between that portion of the displacement piston assembly extending out of the blind bore and the inner wall of the blind bore. The advantages of this device are (1) inexpensive construction, (2) no close tolerances are required and (3) it is not necessary to very accurately center the displacement piston assembly in the blind bore to ensure complete functional safety due to the radially elastic bushing. In case of failure of the control pressure, the displacement piston assembly is maintained in its neutral position by an emergency spring.