| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of welding points while ensuring the bonding strength between the upper frame and the side frame of a seat back by welding. SOLUTION: For long plate-like side frames 1B and 1B which form the frames on both side sections of the seat back 1, the plate sections on the distal end sides which become a bonded section with a pipe-like upper frame 1A forming the frame of the upper edge section of the seat back 1 are bent into a semi-pipe form by going along the outer peripheral surface shape of the upper frame 1A, and are placed and bonded to the outer peripheral surface of the upper frame 1A. Welding points W1 and W2 which bond the upper frame 1A to the side frames 1B and 1B are set to be welding points W1 and W2 being arranged in the peripheral direction of the upper frame 1A, and a welding point W3 which is away from the two points in the axial direction of the upper frame 1A. The welded trace of the welding point W3 is formed into a shape which extends long in the axial direction of the upper frame 1A. COPYRIGHT: (C)2009,JPO&INPIT
|
