Car door rubber sealing strip

Time:

Oct 26,2023

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The car rubber liquid seal is made of binary rubber EPD) material, which has good elasticity and sound drop effect. Since the ladder sealing strip is in the compression open/state during the actual matching process, the sealing strip and the surrounding environmental parts are often in an interference state when designing the structure. The amount of interference and deformation state play a decisive role in the sealing performance of the car. Design engineers usually design and optimize the structure and amount of interference of EPDM rubber strips based on experience. This will greatly reduce the reliability of the design, resulting in frequent problems in the later period and increasing development costs.

The door seal is mainly formed by extrusion and injection molding processes. The cross-section of the extrusion section is the same as that of the door collar. The sealing strip at the corner of the door is mostly injection molded, which is often inconsistent with the amount of gold received, and the problem of door leakage often occurs at this corner. The sealing strip assembly is fixed in the form of 3 tapes and buckles, so the 3 tapes and buckles can be constrained in 6 degrees of freedom, and the working direction is the displacement of the door closing.