What is the reason for the rattling sound of the car door when bumping?

The occurrence of this situation is generally due to the abnormal noise caused by the mutual compression and collision of the tolerances between the plastic parts during the assembly of the car. The occurrence of this kind of abnormal noise can be reduced to a certain extent by installing a sealing tube or making a sound insulation for the whole car.

The use of hidden door handles can reduce the appearance of abnormal noise, and now the technology and quality of hidden door handles have passed the test of time. The advantage of the hidden door handle is that it can reduce the wind resistance of the car, reduce fuel consumption, and reduce wind noise to a certain extent. And this kind of handle makes the appearance of the car more neat and beautiful, and it is more technological for those who have not used this kind of door handle. Generally, cars that use hidden door handles are cars with relatively high technology configuration, and the door can also be opened by remote control or central control, which is more intelligent and convenient. But the hidden door handle also has disadvantages, that is, it is easier to hide dirt and dirt, and it is not easy to clean. If particles enter the handle position, it is easy to cause abnormal noise. But as the times change, I believe that hidden door handles will gradually become popular.