| 摘要 |
A motorized brush imparts vibrational motion to a scrubbing brush head. The brush includes a water-tight housing, in which a small electric motor is mounted. The motor includes an eccentric weight mounted to its drive shaft. In use, the motor is energized, causing the eccentric weight to be rotated. The eccentric weight vibrates the brush head without rotating it. This vibrational motion provides an effective scrubbing action without the necessity for complex sealing mechanisms connecting the brush head to the motor shaft.
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