| 摘要 |
PROBLEM TO BE SOLVED: To regulate backlash between spot-welded members.SOLUTION: Backlash occurs since a gap t is formed by a nugget n in a spot-welded portion between a front face of a front pillar 2 and a welding surface 6a formed in a rear end of a front upper frame 6. Regarding an axial line L of stopper holes 13 which are opened in both ends 12a of a connecting plate 12 and screw holes 2c, 6b, corresponding thereto, threaded in the front upper frame 6 and the front pillar 2, both holes are disposed coaxially while being spaced for a distance S1, and the axial line L1 is inclined in a fan shape outward from an insertion side of a bolt 14. When the bolt 14 inserted through the stopper holes 13 on the connecting plate 12 is threaded and fastened in the screw holes 2c, 6b threaded in the front upper frame 6 and the front pillar 2, since a pitch between the stopper holes 13 is shorter than a pitch between the screw holes 2c and 6b, an included angle between the front upper frame 6 and the front pillar 2 is made narrow, and backlash is regulated. |
