| 摘要 |
<p>According to an aspect of the present invention, a drive mechanism for a power seat apparatus for a vehicle includes an electric motor (2), a speed-reduction gear mechanism (3), a gear housing (4) for housing therein the speed-reduction gear mechanism (3) and supporting thereto the electric motor (2), the gear housing (4) including a housing body (41) having an accommodating space (411), a cover (42) mounted to the housing body (41), and a retaining member (43) provided on the housing body (41) for fixedly retaining the cover (42) on the housing body (41) by rotating the cover (42) relative to the housing body (41) upon assembly, and a bracket (5) through which the gear housing (4) is supported by the driven member (92), the bracket (5) including a receiving portion (53) and a rotation-restricting surface (54).
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