Claims
- 1. A stator of a motor, comprising:a ring-shaped slotless stator core having a rectangular cross section; and a plurality of winding segments formed by coiling a wire around the stator core, the number of the segments depending on the number of poles of the motor and the number of phases of an AC power source, wherein each said winding segment comprises at least a first winding layer, formed by spirally coiling the wire in a first direction on the stator core such that no portion of the wire intersects any other wire portion, and a second winding layer, formed by spirally coiling the wire in a second direction opposite to the first direction on the first winding layer such that no portion of the wire intersects any other wire portion, the second winding layer being stacked on the first winding layer, said winding segments having the same number of turns and external shape and being arranged on the stator core at equal spaces in the circumferential direction, and wherein each said winding segment is formed by coiling the wire around the stator core and a printed board pasted on at least one end face of the stator core.
- 2. The stator of a motor according to claim 1, wherein said wire constituting the winding segments has a circular cross section.
- 3. The stator of a motor according to claim 1, wherein said wire constituting the winding segments has a flat rectangular cross section.
- 4. The stator of a motor according to claim 1, wherein said winding segments are connected to one another by means of a printed pattern on the printed board pasted on at least one end face of the stator core.
- 5. A stator of a motor, comprising:a slotless stator core to be positioned in a motor; a first layer of wire coiled around the slotless stator core such that as the wire advances in a first direction no portion of the coiled wire intersects any other wire portion previously coiled; a second layer of the wire coiled around the first layer such that as the wire advances in a second direction opposite to the first direction, no portion of the second layer of coiled wire intersects any other previously coiled wire portion of the second layer, and an electrically conductive medium positioned on an end face of the slotless stator core prior to the first layer of wire being coiled around the slotless stator.
- 6. A stator for improving a uniform magnetic field in a motor having a slotless stator core, comprising:a plurality of wire layers coiled around said slotless stator core; said plurality of wire layers comprising; a first layer of wire toroidially coiled around said slotless stator core in a first direction along a longitudinal axis of the slotless stator core; a second layer of wire toroidially coiled around said slotless stator core in a second direction opposite said first direction, along said longitudinal axis of said slotless stator core, said first and second layers being positioned relative to one another so as to reduce magnetic field non-uniformity effects; and an electrically conductive medium positioned on an end face of the slotless stator core prior to toroidially coiling the wire around the slotless stator core in the first direction along the longitudinal axis of the slotless stator core.
- 7. A stator of a motor, comprising:a slotless stator core to be positioned in a motor; a first layer of wire coiled around the slotless stator core in a first direction; and a second layer of wire coiled around the first layer in a second direction opposite to the first direction; and an electrically conductive medium positioned on an end face of the slotless stator core prior to coiling the first layer of wire around the slotless stator core in the first direction.
Priority Claims (1)
Number |
Date |
Country |
Kind |
10-175342 |
Jun 1998 |
JP |
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Parent Case Info
This application is a divisional of application Ser. No. 09/326,618, filed Jun. 7, 1999, now pending.
US Referenced Citations (6)
Foreign Referenced Citations (3)
Number |
Date |
Country |
5-161290 |
Jun 1993 |
JP |
6-159361 |
Jun 1994 |
JP |
6-205553 |
Jul 1994 |
JP |