| 摘要 |
<p>In the described electrically powered foldable outer rearview mirror which comprises a base (43), a shaft (10) mounted on the base (43) and having a flange portion (20) and a cylindrical portion (11) which is provided on the flange portion (43), and a frame (15) engaged to rotate about the cylindrical portion (11) and having a bottom portion (24), the flange portion (20) of the shaft (10) comprise a slide surface (Sa) and the bottom portion (24) of the frame (15) comprises a protruding sliding portion (S) which surface contact the slide surface (Sa) to have the frame (15) sliding smoothly around the cylindrical portion (11), for causing a precise stop of the mirror folding movement and an interruption of the electric power. Further, for causing a precise stop of the erecting movement, the frame (15) at the bottom portion (24) has an arc-shaped groove (31) and a plate stopper element (14) including a pair of recess portions which have steps (14a, 14b) symmetric with reference to the cylindrical portion of the frame, the flange portion (20) of the shaft (10) has a shaft stopper element (32) which is loosely engaged in the arc-shaped groove (31) of the frame (15) and a pair of semi-spherical apertures (12) wherein a ball (13) is each retained; and means for rotating the frame determine the frame positions: the normal state in which one of the steps (14a) of each recess of the plate stopper element (14) contacts the respective ball (13), and the backward state in which the shaft stop element (32) contacts one of the groove edges of the arc-shaped groove (31). <IMAGE></p> |
