Abstract: A slip anchor for a seat belt device is attached to a vehicle for guiding a webbing. The slip anchor is formed of a fixing plate to be attached to the vehicle, a guide member having an upper section fixed to the fixing plate, a lower section situated parallel to the upper section and two side sections for connecting the upper and lower sections at lateral sides thereof to thereby form a guide hole for the webbing between the upper and lower sections, and a resin coating coated over the lower section. The lower section is located parallel to and at a predetermined distance away from a plane extending through a back surface of the fixing plate, and includes a rear surface facing the plane, a lower surface facing in a direction away from the upper section, and a curved upper surface extending from an upper end of the rear surface to a front end of the lower surface. Thus, the webbing extending along the rear surface changes a direction along the curved upper surface to smoothly guide the webbing.

Abstract: A slip anchor for a seat belt device has a webbing guide portion including a steel plate pivotably mounted on a part of the vehicle body by a fixing portion and a webbing through opening formed in the steel plate by punching. The steel plate as an insert metal is provided with a resin coating at least at the position of the webbing through opening. The webbing through opening of the steel plate has a flange formed at an edge of the opening at least on the side contacting the webbing and a portion of the steel plate under the webbing through opening is provided with a bend for stiffening.