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