A door buffer for a car door

Abstract

The invention discloses a vehicle door buffer for a vehicle door. The vehicle door buffer comprises a rubber buffer head (1), a shaft sleeve (2), a center shaft (3), a pump plug (4), a return spring (5), a pump body (6) and a pump seat (7). A cavity is formed in the rubber buffer head (1); one end of the shaft sleeve (2) is inserted into the rubber buffer head (1) in an embedded mode, and the other end of the shaft sleeve (2) is fixedly connected with the center shaft (3) through the injection process; the middle of the center shaft (3) is of a spiral structure, and the center shaft (3) is fixedly connected with the pump plug (4) through the injection process; two gas exhaust holes are formed in the pump plug (4) and enable the cavity in the rubber buffer head (1) to communicate with the interior of the pump body (6); and the return spring (5) is supported between the pump plug (4) and the pump seat (7). The vehicle door buffer for the vehicle door has the characteristics that the structure is simple, practicability and convenience are achieved, vibration of a window frame of the vehicle door is reduced, and the door closing sound quality is improved.

Description

technical field [0001] The invention relates to the field of automobile manufacturing, in particular to a door buffer for a car door. Background technique [0002] At present, the common car door in the market is generally equipped with a rubber buffer block structure, which is installed on the door lock and the upper rear edge of the door. The corresponding position on the side wall is designed with a plane structure. When the door is closed, the rubber buffer block is behind the door seal and ahead of the door sheet metal. The plane contact of the side wall prevents the hard collision between the door and the side wall. The existing rubber buffer blocks are all fixed structures, with a constant overall height, high hardness, and a small amount of compression deformation during collisions. Although direct hard collision between the door and the side wall sheet metal can be avoided, the rubber buffer block and the side wall plane The moment of collision will cause the door ...

AI Technical Summary

Problems solved by technology

The existing rubber buffer blocks are all fixed structures, with a constant overall height, high hardness, and a small amount of compression deformation during collisions. Although direct hard collision between the door and the side wall sheet metal can be avoided, the rubber buffer block and the side wall plane The moment of collision will cause the door and window frame to vibrate significantly and produce a large abnormal noise. Customers in the market often complain that the quality of the existing door closing sound is poor. In order to solve the above technical problems, a new solution is needed.

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