| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To keep the operation feeling when operating an operation lever excellent. <P>SOLUTION: A grip margin adjusting mechanism 9 is interposed between the lever body 13 of an operation lever 16 and a knocker 14. The grip margin adjusting mechanism 9 comprises an adjusting bolt 16 threaded to the female screw hole 19 of the lever body 13 and a plate-like engaging projection section 14e, which is formed on the working arm 14c of the knocker 14. In the outer face of the head section 16b of the adjusting bolt 16, engaging grooves 17a and 17b are recessed in a cross shape. Each of the engaging grooves 17a and 17b is formed broader than the arc shape of the engaging projection section 14e. Both of the side walls 17c and 17c of the engaging grooves 17a and 17b are formed into arcs having radius R2, R2 around two points 01 and 01 which are positioned separated from each other in the orthogonal direction and hold the center axis CL of the adjusting bolt 16. The bottom walls 17d of the engaging grooves 17a and 17b are formed by the straight lines 2L connected to the arc faces of both of the side walls 17c and 17c so that the engaging grooves 17a and 17b become broad and shallow. <P>COPYRIGHT: (C)2004,JPO</p> |
