| 摘要 |
PURPOSE:To ensure accurate operation and to simplify the structure by functioning a detection switch while overlapping the relative rotation of cam due to rotation of a visor against the detection switch and the axial motion due to the motion of moderation mechanism. CONSTITUTION:The bracket 12 of a visor is fitted rotatably into a hollow shaft 3 of shaft member 2 to be fixed to the stay to constitute a moderation mechanism 10 for holding the visor 14 at predetermined position with a moderation groove 14 formed in the bottom face of bracket 12 and a moderating projection 5 formed on a washer to be fixed rotatably to the base of the shaft 3. The shaft 3 is fitted with a washer 16, a gear base 17, a gear 18, a washer 19 and a cam base 20, then supported resiliently by a coil spring 15 to engage the gear 18 with the output shaft 36 of the drive motor section 31. A switch 42 co-operating with a cam 43 on the cam base 20 is fixed through a switch plate 41 to the underface of drive motor section 31 thus to construct the switch section. |
