Rotary motor and production method thereof, and laminated core and production method thereof
First Claim
1. A rotary motor having n phases, the rotary motor comprising:
- a stator portion having an inner circumference and including a stator core comprised of laminated magnetic materials, the stator core including a plurality of blocks and a plurality of thin portions, each thin portion being disposed between and connected to adjacent blocks, each block including n magnetic pole teeth, one corresponding to each of the n phases, extending inwardly toward the inner circumference and n coils disposed about the n magnetic pole teeth;
a rotor portion which is disposed adjacent the inner circumference of the stator portion; and
a molded resin product or a substrate, the stator portion being mounted to the molded resin product or the substrate so the inner circumference of the stator portion faces the rotor portion.
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Accused Products
Abstract
An object of the present invention is to provide a low cost, high performance, thin structure rotary motor for driving medium used in magnetic disk drive unit, optical disk drive unit or the like, in order to improve the productivity of terminating processing and the reliability of the coils. Magnetic materials which are divided to a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.
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Citations
37 Claims
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1. A rotary motor having n phases, the rotary motor comprising:
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a stator portion having an inner circumference and including a stator core comprised of laminated magnetic materials, the stator core including a plurality of blocks and a plurality of thin portions, each thin portion being disposed between and connected to adjacent blocks, each block including n magnetic pole teeth, one corresponding to each of the n phases, extending inwardly toward the inner circumference and n coils disposed about the n magnetic pole teeth; a rotor portion which is disposed adjacent the inner circumference of the stator portion; and a molded resin product or a substrate, the stator portion being mounted to the molded resin product or the substrate so the inner circumference of the stator portion faces the rotor portion. - View Dependent Claims (2, 3, 4, 5)
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6. A rotary motor comprising:
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a rotor portion; and a stator portion including a stator core disposed about said rotor portion, said stator core including, a plurality of blocks, each block including a plurality of magnetic pole teeth extending inwardly toward the rotor portion, a plurality of coils disposed about said magnetic pole teeth, said coils comprised of wire being wrapped around the magnetic pole teeth, and a plurality of crossover wires that interconnect said coils on said magnetic pole teeth, each crossover wire disposed between and interconnecting at least one coil on a block to at least one coil on an adjacent block, wherein said crossover wire is a portion of a continuous length of wire that forms said at least one coil on said blocks. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A rotary motor comprising:
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a base; a rotor portion mounted to said base; a stator portion having a stator core including laminated magnetic pole teeth; and
coils disposed on the magnetic pole teeth; anda storage container for storing said stator core, said storage container being mountable to said base, wherein said stator core is bendable about the rotor portion and mounted to said storage container, said storage container being constructed and arranged to fix said stator core in a predetermined position about said rotor portion when said storage container is mounted to said base. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A laminated core for a rotary motor, said core comprising:
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a plurality of sheets of magnetic material stacked to form the magnetic path of the rotary motor, said plurality of sheets of magnetic material forming a plurality of block portions and thin portions connecting said block portions, each block portion including a plurality of magnetic pole teeth, said laminated core being bendable at said thin portions, wherein said block portions and said thin portions are integrally formed with said sheets of magnetic material. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A laminated core comprising:
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a plurality of stacked layers of magnetic material including outer layers having outer sides, wherein at least each outer layer is comprised of folded magnetic material that includes first and second portions each having opposing sides, one side having at least one edge including a burr portion thereon and the other side having edges free of burr portions, the first and second portions being folded toward each other with the burr portions being disposed opposite each other, the outer layers of magnetic material being arranged with the edges of the outer sides being free of burr portions.
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37. A laminated core for forming a magnetic path for a transformer, the laminated core comprising:
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a plurality of stacked magnetic material sheets, each magnetic material sheet comprised of a substantially U-shaped core portion including a first end and a second end and having a substantially U-shaped opening, a substantially straight yoke portion including a first end and a second end and a thin portion which interconnects the first end of the core portion to the first end of the yoke portion, the thin portion being constructed and arranged to be bent so that the second end of the yoke portion engages the second end of the core portion to close the U-shaped opening with the yoke portion.
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Specification