| 摘要 |
<p>A joint section (11) is provided to the upper case (3) of a mirror unit tilting mechanism (1) so as to protrude therefrom. A fitting section (21) is provided to the pivot plate (5) side so as to correspond to the joint section (11). The joint section (11) is formed in a hollow hemispherical shape. A support shaft (13) is raised from the center part of an outer wall (12), and a spherical surface section (12b) is formed on the outer wall (12). The fitting section (21) has a hollow hemispherical dome shape and is provided with a spherical surface-shaped side wall section (22) and a ceiling section (23) which has a wave-shaped cross-section. The fitting section (21) is press-fitted into the joint section (11) with a small force by one-touch insertion operation. The fitting section (21) and the joint section (11) are rockably connected to each other with the curved surfaces of the spherical surface section (12b) and the side wall section (22) held in contact with each other.</p> |
