Leather diaphragm of automobile vacuum booster

• Main Authors: XIA DINGHU, MA XIAOPENG, CAI PEILIANG, YUAN YUHU, CHEN TIANMING
• Format: Patent
• Language: Chinese; English
• Published: 08.07.2009
• 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 first leather diaphragm in a vehicle vacuum booster, which is characterized in that a round hole is arranged in the center of the leather diaphragm, two eyelets are arranged on the leather diaphragm, the internal wall of the round hole is provided with a circular groove, the internal wall of the edge of the leather diaphragm is provided with a circular ditch groove, the distance from the circular groove on the internal wall to the top plane is from 0.6 mm to 1 mm, and lubricating grease can be stored in the circular groove; the circular ditch groove on the edge can divide a booster cavity into two cavities; two eyelets on the leather diaphragm are distributed symmetrically, and the leather diaphragm can be made by choosing EP rubber. The utility model prolongs the life of the vehicle vacuum booster, enlarges the power boost ratio of the booster, improves the seal performance of the vacuum booster, also improves the use durability of the leather diaphragm, is moulded in a mould pr