| 摘要 |
PROBLEM TO BE SOLVED: To provide frame joints capable of working one frame by one kind of a die and one kind of a tool by setting the die and the tool of a right-to-left common type for forming right and left side members, reducing the initial investment for the die and the tool considerably more than a conventional one, and reducing the manufacturing cost. SOLUTION: The frame joints are splittable joints 6, 7, 8, 9 having parts 4, 5 changing in the vehicle width direction and/or the height direction provided on side members 3, 3' of the frame 1 to which the right and left side members 3, 3' are connected by a plurality of cross members 2 in a predetermined width. The joints 6, 7, 8, 9 are formed rotation-symmetric in the longitudinal direction on the right and left sides. Right and left side members are formed with one kind of the die and one kind of the tool for one frame, the initial investment of the die and the tool can be reduced considerably more than the conventional one, and the manufacturing cost including the management cost of the die and the tool can also be reduced. COPYRIGHT: (C)2008,JPO&INPIT
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