Electrically powered foldable outer rearview mirror for a motor vehicle

An electrically powered foldable outer rearview mirror comprising:

• a base (43);
• a shaft (10) mounted on the base, said shaft including a flange portion (20) and a cylindrical portion (11) protruding from the flange portion (20), said flange portion having a slide surface (Sa) ;
• and
• a frame (15) engaged rotatably on the cylindrical portion (11) for rotation around the cylindrical portion, said frame (15) having a root portion (24) provided with an annular shaped sliding portion (S) contacting said slide surface (Sa) of said flange portion to slide smoothly around the cylindrical portion (11) of said shaft (10);
• wherein said frame is provided with an annular-shaped plate stopper element (14) in a rear surface of the root portion (24) and inside of the sliding portion (S), and said flange portion (20) of the shaft (10) has a shaft stopper element (32) loosely engaged with an arc-shaped groove (31) provided in the rear surface of the frame root portion (24) and balls (13,13) are accommodated in respective semi-spherical apertures (12,12) provided in the flange portion (20) and located so that said balls (13,13) contact said plate stopper element (14);
• and
• wherein said shaft (10) includes an annular rib (16) protruding from an upper surface of said flange portion (20) and extending coaxially to the plate stopper element (14) around an outer periphery of the sliding surface (Sa) and said rear surface of the root portion (24) is provided with an annular groove (17) in which said annular rib (16) engages loosely.