Back body gas seal used for automobile vacuum booster

• Main Authors: XIA DINGHU, MA XIAOPENG, CAI PEILIANG, WANG ZHEN, YUAN YUHU
• Format: Patent
• Language: Chinese; English
• Published: 19.05.2010
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL

The utility model discloses a back body gas seal used for an automobile vacuum booster, which comprises a tube body, wherein the tube body consists of a framework and a rubber ring sleeve, the rubber ring sleeve and the upper end of the framework are vulcanized into a whole structure, the rubber ring sleeve consists of an inner circle movable sealing section and an outer circle fixed sealing section, a plurality of annular bulges are distributed on the outer circle fixed sealing surface of the rubber ring sleeve, and a plurality of annular bulges are distributed on the inner movable sealing surface of the rubber ring sleeve. Through the improvement on the back body gas seal structure, the utility model prolongs the service life of the automobile vacuum booster, improves the sealing characteristics and the movement sensitivity of the vacuum booster, and simultaneously improves the self durability of the back body gas seal through adopting better materials and production processes.