US Patent 10513223 Viewing device for a vehicle

In a door mirror device for a vehicle, an engaging ring that rotates together with a case is provided on an interior floor portion of the case. A restricting ring is provided at the upper side of the engaging ring and is urged toward the lower side by a coil spring. The restricting ring is movable to a side in an axial direction of a support shaft of a stand, but relative rotation of the restricting ring with respect to the support shaft is restricted. Therefore, in a state in which upper side protrusion portions of the engaging ring go out from restricting recess portions of the restricting ring, the restricting ring is moved toward the upper side. Consequently, movement of the case toward the upper side can be suppressed.