The casing 1 is formed with a recess or projection 1a, 1b, thus preventing {HEAD ~ a slip} of {TAIL ~ the resin member} 3 from occurring 
of
The casing 1 is formed with a recess or projection 1a , 1b , thus preventing { HEAD ~ a slip } of { TAIL ~ the resin member } 3 from occurring
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH