Abstract: A bumper stopper installed on the shock absorber of a vehicle to respond to the impact of a cylinder lifting or lowering in the vertical direction depending on the running state of the vehicle. The bumper stopper is constructed such that a cylindrical dust cover having an opening formed at the lower end thereof is connected to a buffer member formed of peaks and troughs. The buffer member has a through hole through which a cylinder and rod of a shock absorber passes via a connection plate so that the buffer member and the dust cover are integrated with each other. It prevents air from being compressed inside the buffer member, thereby preventing component damage due to high pressure. Also, it prevents abnormal noise from occurring in the process of contact and separation between the cylinder and the connection plate, thereby providing improved ride comfort.

Abstract: A compact boot of a constant velocity joint having a housing and a drive shaft, including: a large diameter portion connected to the housing; a small diameter portion connected to the drive shaft, positioned in the same central axis as the large diameter portion, and having a smaller external diameter than the large diameter portion; and a corrugated portion connecting between the large diameter portion and the small diameter portion, and having a plurality of peaks and valleys. The plurality of peaks and valleys are formed to be parallel with the central axis of the large diameter portion and the small diameter portion, and the plurality of peaks are not radially protruded to be converged between the external diameter of the large diameter portion and the external diameter of the small diameter portion.