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