| 摘要 |
PURPOSE:To disperse the stress that a body of an operating part receives and to increase strength by placing stanchions across the inside of the body, connecting a pair of covers by the stanchions, and mounting and fixing the covers so as to hold the body in place therebetween. CONSTITUTION:The 1st and the 2nd covers 10, 11 are connected to each other, and are mounted and fixed to a casing 7 by holding the casing 7 in place therebetween. More specifically, the 1st cover 10 and a suppoting plate 14 are connected by means of plural supporting rods 12-. A mounting annular body 19 and a member 32 for fixing an anti-folding pipe as a cover fixing member are connected to the plate 14 and the 2nd cover 11 is tightened by the member 32. Both covers 10, 11 are fitted by being pressed and fixed while they are held fitted in respective openings 8, 9 as the cover are connected and pulled by the rods 12-, the plate 14, the body 19 and the member 32. The formation of the body with a plastic is made possible while satisfactory mechanical strength is assured with the easy processing of the parts and the reduced cost. |
