Patent ID: 8136841

Claim:
A shoulder position adjuster device comprising: a guide rail having a plurality of latch holes arranged at predetermined intervals in a longitudinal direction, the guide rail being adapted to be fixed to a body frame; a slide member slidably attached to the guide rail; a through anchor connected to the slide member and supporting a webbing; a latch member provided on the slide member so as to advance and retract, the latch member being adapted to restrain the slide member from sliding on the guide rail by being projected from the slide member; a latch spring which biases the latch member so as to insert the latch member into a latch hole of the plurality of latch holes; a button which enables a pulling operation of the latch member, the pulling operation including pulling the latch member out of the latch hole against a biasing force of the latch spring; and a cover attached to the slide member and having an open window portion through which the button is externally exposed, wherein a height of the through anchor is adjusted by selecting the latch hole with which the latch member is inserted into, wherein the button comprises: an outer surface portion which, at a normal state, is continuous with an outer surface of the cover which faces an interior space of a vehicle, flexible left and right outer lateral walls formed continuously from the outer surface portion and having a lock portion which is locked on to the slide member at the normal state and is released from the locked state when the pulling operation is performed, and a connecting wall which extends from the outer surface portion towards the guide rail in the left and right outer lateral walls so as to connect the latch member; wherein the slide member comprises a spring compartment for accommodating the latch spring, the spring compartment comprising: a spring supporting portion for supporting the latch spring, adapted to abut with an upper end of the latch member during the pulling operation so as to restrict the button from moving to the interior space of the vehicle, a wall surrounding a portion of the latch spring, and a pair of slits in opposite portions of the wall, and wherein the latch member comprises a locking piece configured to project movably through the pair of slits, the locking piece being connectable to the connecting walls of the button.