Direct Drive Motor in Washing Machine
First Claim
1. A direct drive motor in a washing machine comprising:
- a stator 14 having a winding portion with coils wound thereon;
a rotor having a sidewall 13b, and a rear wall 13a with a pass through hole 131 at a center,an annular washer in close contact with, and fixedly secured to, the rear wall 13a of the rotor 13;
a connector of resin having a vibration mode different from the washing shaft, fixedly secured to the rear wall of the rotor for supporting the washing shaft;
coupling means for coupling the connector 16, the rotor 13, and the washer 30 together.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention improves a driving unit of a washing machine, for improving workability in fabrication of a rotor, and enhance rigidity of the rotor.
To achieve this, the present invention provides a direct drive motor in a washing machine including a stator 14 having a winding portion with coils wound thereon, a rotor having a sidewall 13b, and a rear wall 13a with a pass through hole 131 at a center, and fastening pass through holes 138 around the pass through hole 131, an annular washer 30 in close contact with, and fixedly secured to, the rear wall 13a of the rotor 13, the annular washer 30 having fastening pass through holes 300a in a surface thereof in correspondence to fastening pass through holes 138 in the rear wall of the rotor, a connector 16 of resin having a vibration mode different from the washing shaft, fixedly secured to an inner side of the rear wall of the rotor for supporting the washing shaft, the connector having fastening pass through holes 162 in correspondence to the fastening pass through holes 138 around the pass through hole 131, bolts ‘B’ passed through the fastening pass through holes in the connector 16, the rotor 13, and the washer 30, and nuts ‘N’ fastened to threads on the bolts ‘B’ for holding the connector 16, the rotor, and the washer together.
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Citations
20 Claims
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1. A direct drive motor in a washing machine comprising:
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a stator 14 having a winding portion with coils wound thereon; a rotor having a sidewall 13b, and a rear wall 13a with a pass through hole 131 at a center, an annular washer in close contact with, and fixedly secured to, the rear wall 13a of the rotor 13; a connector of resin having a vibration mode different from the washing shaft, fixedly secured to the rear wall of the rotor for supporting the washing shaft; coupling means for coupling the connector 16, the rotor 13, and the washer 30 together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A direct drive motor in a washing machine comprising:
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a stator 14 having a winding portion with coils wound thereon; a rotor having a sidewall 13b, and a rear wall 13a with a pass through hole 131 at a center, and fastening pass through holes 138 around the pass through hole 131; an annular washer 30 in close contact with, and fixedly secured to, the rear wall 13a of the rotor 13, the annular washer 30 having fastening bosses 300 projected from a surface thereof toward a washing shaft in correspondence to fastening pass through holes 138 in the rear wall of the rotor, each of the fastening bosses 300 having a fastening hole 300b with a thread on an inside circumference; a connector of resin having a vibration mode different from the washing shaft, fixedly secured to the rear wall of the rotor with bolts B passed through the fastening pass through holes 138 in the rotor, and fastened to the fastening bosses 300 on the annular washer 30. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A direct drive motor in a washing machine comprising:
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a stator 14 having a winding portion with coils wound thereon; a rotor having a sidewall 13b, and a rear wall 13a with a pass through hole 131 at a center, and fastening pass through holes 138 around the pass through hole 131; a connector 16 of resin having a vibration mode different from the washing shaft, fixedly secured to an inner side of the rear wall of the rotor for supporting the washing shaft, the connector having fastening pass through holes 162 in correspondence to the fastening pass through holes 138 around the pass through hole 131; an annular washer 30 in close contact with an outer side of, and fixedly secured to, the rear wall 13a of the rotor 13, the annular washer 30 having fastening pass through holes 300a in a surface thereof in correspondence to the fastening pass through holes 138 in the rear wall of the rotor, and positioning holes in which the positioning projections 160 on the connector 16 are inserted; and coupling means for coupling the connector 16, the rotor 13, and the washer 30. - View Dependent Claims (18, 19, 20)
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Specification