CUSHION MEMBER HAVING THREE-DIMENSIONAL NET

摘要

PURPOSE: To heighten a lock strength with respect to a sheet frame or the like of each metallic lock clip and to obtain an excellent durability by holding a plurality of metallic lock clips between at least the both end parts of a three- dimensional net and rein frames and integrally joining them by means of vibration welding. CONSTITUTION: A cushion member C having the three-dimensional net 8 to be used as a seat or a seat back for a wheelchair is provided with the three- dimensional net 8 and the metallic lock clips 10 for fixing the net 8 to a vehicle body frame. The end part of the net 8 is crushed by vibration welding over its whole periphery. Then one end parts of the lock clips 10 are held between the both end parts and the resin frames 12 at prescribed interval the clips 10 and the frames 12 are integrally joined to the net 8 by executing vibration welding again. A thermo-plastic resin such as polybutylene phthalate, for example, is used for the resin frame 12.