The present invention relates to an improvement of {HEAD ~ a braking structure} which is applied to {TAIL ~ a combined portion} between the after mentioned kind of turning body and a base so as to provide a predetermined braking force to the turning according to the turning body combined turnably relative to the base 
is applied to
The present invention relates to an improvement of { HEAD ~ a braking structure } which is applied to { TAIL ~ a combined portion } between the after mentioned kind of turning body and a base so as to provide a predetermined braking force to the turning according to the turning body combined turnably relative to the base
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH