The present invention relates to a mechanism for adjusting an angle at which a movable member is fixed to a fixed member, for use on an adjustable-angle seat back, for example, and more particularly to such a fixed-angle adjusting mechanism composed of a fixed member and a movable member angularly movably mounted on the fixed member, the fixed and movable members having a latch member and a pawl member engageable with and disengageable from each other in response to operation of a control lever for adjusting the angle of attachment of the movable member to the fixed member.
Prior fixed-angle adjusting mechanisms of the type described include a fixed member and a movable member angularly adjustably mounted on the fixed member. To set the movable member in a desired angular position with respect to the fixed member, a control handle is first released, then the movable member is angularly moved to the desired position with respect to the fixed member, and finally the movable member is secured to the fixed member. Once the movable member has been turned from a desired position to another position, however, the movable member cannot easily be returned to the desired position. When the movable member is to be restored to the original desired position, efforts should be made to adjust the angular position of the movable member again. Accordingly, the conventional fixed-angle adjusting mechanisms have been tedious and time-consuming in angle adjusting operation.