关键词: 驾驶室车门；密封胶条；车门淋雨；截面结构；压缩量；密封性

Abstract: In order to solve the problem of rain leakage of cab door, this paper analyses the main influencing factors of sealing property and the main features of weather strip, focuses on optimizing the structure of weather strip. The compression is improved by changing the structure of cross section of weather strip from single cavity to double cavities. The clamping force is improved by adding pawls. Through adding foam bars at the position which the curvature changes intensely, the contact area between the strip and door is increased, the rebound force is increased. Through adding the molded corners, the strip and mounting edge are fitting well, the accuracy of mounting position is guaranteed. Through the above methods, the sealing property of the cab door is increased, which is proved by rain test. Therefore, optimizing the structure of weather strip can effectively improve the sealing property of the cab and reduce the production cost.

Key words: Cab door; Weather strip; Door rain-leaking; Structure of cross section; Compression; Sealing property