| 摘要 |
PURPOSE: To achieve a significant reduction in the number of components, a cost reduction, easy disassembly, assortment and reuse for recycling, safety and dust-proof for driving gears, and the easy hooking of harnesses. CONSTITUTION: Casings 45 and 46, opposite each other, are made of glass-fiber- reinforced slidable resin so as to be integrated with the bearing parts 48 for a gear train 47. Also, the shafts 47a of the gear train 47 are made of slidable resin of a general grade, different from the resin of which the casings 45 and 46 are made, so as to be integrated with the gear train 47. The projecting edges 45a and 46a of the casings 45 and 46 cover the gear train, and hooks 46c for the harnesses 51 and 52 are integrated with the casing 46.
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