| 摘要 |
PROBLEM TO BE SOLVED: To simplify assembling work by boring engagement holes in corresponding parts of right and left brackets, inserting a connecting member in both engagement holes, and engaging locking pieces formed at both ends of the connecting member with the outside surfaces of both brackets. SOLUTION: Engagement holes 14, 15 elongated in the longitudinal direction are bored in corresponding portions of triangular brackets 12, 13 pointing forward and backward. A connecting member 16 formed by bending a metal plate to form a downward U-shape and have a longitudinal width a little smaller than those of the engagement holes 14, 15 is inserted in the engagement holes 14, 15. Downward locking pieces 17 at both ends of the connecting member 16 are engaged with the outside surfaces of both brackets 12, 13. Thus, both brackets 12, 13 can be prevented from opening in the separating directions and being rattled, and the connecting member 16 can be simply fitted to the brackets 12, 13.
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