| 摘要 |
<p>A detecting member 35 has three substantially rectangular plate-shaped detecting plates 51a, 51b, and 51c formed integrally therewith which are arranged to face an arc-shaped portion 33a of a following member 33. The detecting plates 51a, 51b, and 51c are, at one end, supported on a main portion 50, and are composed of base-end portions R1, with which, at their reverse side, a prop 60 makes contact, and swing portions R2, which are located on the tip-end side of the base-end portions R1 and with which protrusions 43a and 43b on the arc-shaped portion 33a make contact. The base-end portions R1 have a wider elastically deformable range than the swing portions R2.</p> |
