{HEAD ~ an adaptor member} adapted to be fitted to the second supporting section and formed with {TAIL ~ a guide groove} for pinching the sub shaft, and 
formed with
{ HEAD ~ an adaptor member } adapted to be fitted to the second supporting section and formed with { TAIL ~ a guide groove } for pinching the sub shaft , and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH