The plurality of recesses 36 are arranged at intervals along a trajectory of {HEAD ~ a locking projection} 33 of {TAIL ~ an antenna structure body} 3 generated when the antenna structure body 3 turns 
of
The plurality of recesses 36 are arranged at intervals along a trajectory of { HEAD ~ a locking projection } 33 of { TAIL ~ an antenna structure body } 3 generated when the antenna structure body 3 turns
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH