Further, a guide pin 7 having a slightly smaller diameter than {HEAD ~ a groove width} of the slit groove 6C is arranged to be inserted into the slit groove, and both ends of {TAIL ~ the guide pin} 7 are press inserted to the bearing portion 3A and fixed 
Further , a guide pin 7 having a slightly smaller diameter than { HEAD ~ a groove width } of the slit groove 6C is arranged to be inserted into the slit groove , and both ends of { TAIL ~ the guide pin } 7 are press inserted to the bearing portion 3A and fixed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH