Mechanism for slowing down idling shoe of an electric polisher
First Claim
1. A mechanism for slowing down idling shoe of an electric polisher, comprising a housing that forms a body of the polisher, an actuating spindle that downward extends through a protective cover connected to a bottom of said housing has a lower end forming an eccentric shaft, a fan that is mounted on said actuating spindle, a fixing seat that is mounted around said eccentric shaft of said actuating spindle and has a ball bearing fitted therein, a brake ring that has an elastic inner ring tightly fitted around a lower outer periphery of said fixing seat and an outer ring engaged with an underside of said protective cover, a shoe that is screwed to a bottom of said fixing seat for holding a polishing element to a bottom surface of said shoe, and a washer that is positioned between said fixing seat and said shoe;
- whereby when said shoe is idling, said eccentric shaft of said actuating spindle brings said fixing seat to rotate synchronously in eccentric motion to increase a frictional force between said fixing seat and said brake ring and thereby slow down said idling shoe.
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Accused Products
Abstract
A mechanism for slowing down idling shoe of an electric polisher is provided. The mechanism includes an actuating spindle that downward extends through a protective cover connected to a bottom of a housing of the polisher and has a lower end forming an eccentric shaft, a fixing seat that is mounted around the eccentric shaft of the actuating spindle and has a ball bearing fitted therein, a brake ring that has an elastic inner ring tightly fitted around a lower outer periphery of the fixing seat and an outer ring engaged with an underside of the protective cover, a shoe that is screwed to a bottom of the fixing seat for holding a polishing element to a bottom surface of the shoe. When the shoe is idling, the eccentric shaft of the actuating spindle brings the fixing seat to rotate synchronously in eccentric motion to increase a frictional force between the fixing seat and the brake ring, so that the idling shoe is brought to rotate at low speed and vibrate at high frequency.
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Citations
5 Claims
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1. A mechanism for slowing down idling shoe of an electric polisher, comprising a housing that forms a body of the polisher, an actuating spindle that downward extends through a protective cover connected to a bottom of said housing has a lower end forming an eccentric shaft, a fan that is mounted on said actuating spindle, a fixing seat that is mounted around said eccentric shaft of said actuating spindle and has a ball bearing fitted therein, a brake ring that has an elastic inner ring tightly fitted around a lower outer periphery of said fixing seat and an outer ring engaged with an underside of said protective cover, a shoe that is screwed to a bottom of said fixing seat for holding a polishing element to a bottom surface of said shoe, and a washer that is positioned between said fixing seat and said shoe;
- whereby when said shoe is idling, said eccentric shaft of said actuating spindle brings said fixing seat to rotate synchronously in eccentric motion to increase a frictional force between said fixing seat and said brake ring and thereby slow down said idling shoe.
- View Dependent Claims (2, 3, 4, 5)
Specification