| 摘要 |
PROBLEM TO BE SOLVED: To improve the outside appearance by closing an outside surface opening 9 of a conveyor side frame 2. SOLUTION: It is possible to prevent a backlash of a cover 12 as an inside part 15a makes closely contact with an inner surface of a vertical edge 7 on the upper side and no clearance is made between an engagement hook 15 and the cover 12 when the cover 12 is closed by loosening a main body 13, that is, the inside part 15a of the engagement hook 15 is made contact with the inner surface of the vertical edge 7 on the upper side.
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