Patent ID: 8678438

Claim:
A seat belt apparatus for a vehicle, the seat belt apparatus comprising: a seat belt anchor having: an anchor metal plate including a base portion with a through hole for insertion of a fastening bolt and a free end portion formed therein with a slot to extensibly support a seat belt, a lower cover to cover one side of the base portion of the anchor metal plate, an upper cover to cover a head portion of the fastening bolt in opposition to the base portion of the anchor metal plate, and which is rotatably supported on a vehicle body by the fastening bolt, the upper cover including a contact rib protruding toward the lower cover from at least one inner side portion, the contacting rib contacting a portion of a lower sidewall protruding from an edge of a bottom plate of the lower cover, at least one arc-type rib protruding from a portion adjacent to an edge of a side portion of the base portion of the anchor metal plate provided on an inner surface of the bottom plate of the lower cover, and a connection rib connecting the arc-type rib and the lower sidewall; a guide bar having a proximal end rotatable at a predetermined angle about the fastening bolt, and a distal end extending in a forward direction of the vehicle body, the fastening bolt passing through the guide bar between an outer surface of the lower cover and the vehicle body; a belt guide connected to the distal end of the guide bar to support the seat belt, which has passed through the slot of the anchor metal plate, by allowing the seat belt to secondarily pass through the belt guide; and a housing coupled with the vehicle body to rotatably receive the proximal end of the guide bar, wherein a stopper guide protrudes from a cover portion of the housing facing the bottom plate of the lower cover to event the seat belt anchor from rotating when a head of an occupant collides with a side portion of the upper cover, and at least one arc-type slot is formed in the bottom plate of the lower cover adjacent to at least one side portion of the base portion of the anchor metal plate so that the stopper is inserted into the arc-type slot.