Anchoring structure for a self-standing seat belt unit

Claim 1

An anchoring structure for a self-standing seat belt unit adapted to be anchored to a side portion of a vehicle seat, said seat belt unit including a self-supporting, elongated upstanding member formed at the lower end portion thereof with a bolt accomodation hole and a belt connector mounted to the upper end of said upstanding member, said anchoring structure comprising: a support member mounted to the side portion of said vehicle seat and having a bolt accommodation hole with which said bolt accomodation hole of said upstanding member is aligned; a bushing member having a sleeve portion and a flange portion, said sleeve portion being received within said bolt accomodation hole of said upstanding member, said flange portion being interposed between said upstanding member and said support member; a bolt passing through said bolt accomodation holes and said bushing sleeve portion and attaching the lower end of said upstanding member to said support member in such a manner that the upstanding member is swingingly movable about the axis of said bolt, said bolt having a head portion, a threaded stem portion and a nut at the end of said stem; biasing means constituted by a relatively thin elastic member mounted on said bolt for urging the lower end portion of said upstanding member against said support member for thereby retaining, by the effect of frictional resistance, said upstanding member at a convenient position for use, said biasing means cooperating with said head portion of said bolt and said nut to elastically clamp the lower end portion of said upstanding member toward said support member; and a guide member of a thin-walled structure, mounted on the lower end portion of said upstanding member to rotate together therewith about the axis of said bolt and having a channel-like portion including a base wall and a pair of side walls, said base wall interposed between the lower end portion of said upstanding member and said flange portion of said bushing member and being formed with a hole which is substantially aligned with said bolt accomodation hole of said upstanding member and through which said sleeve portion of said bushing member passes, said side walls being adapted to fittingly receive between them the lower end portion of said upstanding member, said guide member further comprising an integral finger portion provided at the lower end of said base wall and projecting toward said support member; said support member having an elongated opening to receive therewithin said finger portion in such a manner that the finger portion is movable within said opening and abuttingly engageable with the end walls of said opening to limit the extent of swinging movement of said upstanding member.