Abstract: A drum brake used in a vehicle generally includes a backing plate secured to a non-rotatable member of a wheel shaft; a pair of brake shoes slidably attached to the backing plate; a wheel cylinder disposed between one end of each brake shoe, where they are closely positioned to each other; an anchor disposed between the other end portion of each brake shoe where they are again closely positioned to each other, and having an anchor block on which each end portion of the brake shoes abuts and an anchor bracket secured on the anchor block for protecting each brake shoe from swinging out; and a substantially U-shaped return spring engaged with each web portion of the brake shoes for biasing the shoes in a mutually approaching direction.

Abstract: A drum brake used in a vehicle generally includes a backing plate secured to a non-rotatable member of a wheel shaft; a pair of brake shoes slidably attached to the backing plate; a wheel cylinder disposed between each end portion of the brake shoes where they are closely positioned to each other; and a substantially U-shaped return spring to be engaged with each web portion of the brake shoes at the extreme ends thereof for biasing both in a mutually approaching direction. The U-shaped return spring in this invention is characteristically provided with, at each end portion thereof, where the same is engaged with each web portion of the shoes, a notch whereinto the web portion is to be fitted for securely positioning the return spring.