OSCILLATING MOTOR AND ELECTRIC CLIPPERS
First Claim
1. An oscillating motor, comprising:
- a U-shaped magnetic yoke having a first support leg and a second support leg, and the first support leg and the second support leg are wound with coils;
a control circuit electrically connected to the coils and generating alternating pulses to generate alternating magnetic poles at end faces of the the first support leg and the second support leg of the U-shaped magnetic yoke;
a swing arm swingable around a fulcrum;
wherein the swing arm extends outward from the end faces of the U-shaped magnetic yoke and is bounded by the fulcrum;
an end of the swing arm close to the U-shaped magnetic yoke is an inner arm and the other end of the swing arm remote from the U-shaped magnetic yoke is an outer arm;
a second magnetic yoke mounted at one end of the inner arm close to the U-shaped magnetic yoke; and
a first permanent magnet, a second permanent magnet, a third permanent magnet, and a fourth permanent magnet being fixedly mounted on the second magnetic yoke;
wherein the first permanent magnet, the second permanent magnet, the third permanent magnet, and the fourth permanent magnet are orderly spaced and distributed on a same circumference centered on the fulcrum;
radial end faces of the first permanent magnet and of the fourth permanent magnet have a same polarity;
radial end faces of the second permanent magnet and of the third permanent magnet have a same polarity;
the radial end faces of the first permanent magnet and the second permanent magnet have opposite polarities and are provided corresponding to an end face of the first support leg;
the radial end faces of the third permanent magnet and the fourth permanent magnet have opposite polarities and are provided corresponding to an end face of the second support leg;
an air gap is provided between the end faces of the first permanent magnet and the second permanent magnet and of the corresponding first support leg and an air gap is provided between the end faces of the third permanent magnet and the fourth permanent magnet and of the corresponding second support leg.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an oscillating motor and electric clippers. The oscillating motor includes a U-shaped magnetic yoke, four permanent magnets and a swing arm. The U-shaped magnetic yoke causes end faces of two support legs to produce alternating magnetic poles with the control circuit. The four permanent magnets are fixedly mounted to an inner arm via a second magnetic yoke. The four permanent magnets are sequentially distributed on a same circumferential surface having a fulcrum being a circle centre. The polarities of radial end faces of the first permanent magnet and the fourth permanent magnet are the same. The polarities of radial end faces of the second permanent magnet and the third permanent magnet are the same, and the opposite of the polarity of the radial end face of the first permanent magnet. When a coil is electrified, the four permanent magnets produce torque having the same direction of rotation.
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Citations
12 Claims
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1. An oscillating motor, comprising:
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a U-shaped magnetic yoke having a first support leg and a second support leg, and the first support leg and the second support leg are wound with coils; a control circuit electrically connected to the coils and generating alternating pulses to generate alternating magnetic poles at end faces of the the first support leg and the second support leg of the U-shaped magnetic yoke; a swing arm swingable around a fulcrum;
wherein the swing arm extends outward from the end faces of the U-shaped magnetic yoke and is bounded by the fulcrum;
an end of the swing arm close to the U-shaped magnetic yoke is an inner arm and the other end of the swing arm remote from the U-shaped magnetic yoke is an outer arm;a second magnetic yoke mounted at one end of the inner arm close to the U-shaped magnetic yoke; and a first permanent magnet, a second permanent magnet, a third permanent magnet, and a fourth permanent magnet being fixedly mounted on the second magnetic yoke;
wherein the first permanent magnet, the second permanent magnet, the third permanent magnet, and the fourth permanent magnet are orderly spaced and distributed on a same circumference centered on the fulcrum;
radial end faces of the first permanent magnet and of the fourth permanent magnet have a same polarity;
radial end faces of the second permanent magnet and of the third permanent magnet have a same polarity;
the radial end faces of the first permanent magnet and the second permanent magnet have opposite polarities and are provided corresponding to an end face of the first support leg;
the radial end faces of the third permanent magnet and the fourth permanent magnet have opposite polarities and are provided corresponding to an end face of the second support leg;
an air gap is provided between the end faces of the first permanent magnet and the second permanent magnet and of the corresponding first support leg and an air gap is provided between the end faces of the third permanent magnet and the fourth permanent magnet and of the corresponding second support leg. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification