JPH11333189A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure insulation between the coil of a stator and a reduction mechanism to improve safety even if the insulation between the stator and the coil of the stator is degraded in a washing machine which executes washing, rinsing, and dewatering clothes. SOLUTION: A hollow spin-dry shaft 27 and a washing shaft 29 mounted coaxial with the spin-dry shaft 27 are rotated by a motor 34 to rotate a washing/spin-dry basket by the spin-dry shaft 27. The rotation speed of a motor 34 is reduced by a reduction mechanism 30 to rotate the agitator blade provided in the washing/spin-dry basket by a washing shaft 28, and the rotation of the motor 34 is switched to either the spin-dry shaft 27 or the washing shaft 29 by a clutch mechanism 47. The motor 34 and the reduction mechanism 30 are coaxially mounted via an insulation 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine for washing, rinsing and dewatering clothes.

[0002]

2. Description of the Related Art Conventionally, this type of washing machine has been configured as shown in FIGS. Hereinafter, the configuration will be described.

As shown in FIG. 6, a washing machine main body 1 is provided with a water receiving tank 3 suspended by a suspension 2 so as to prevent dehydration vibration therein. The washing and dewatering tub 4 is provided with a stirring blade 5 for stirring the laundry at the inner bottom thereof.

As shown in FIG. 8, the washing and dewatering tub 4 is fixed to the upper end of a dewatering shaft 7 supported by a bearing 6 provided at the bottom of the water receiving tub 3. A washing shaft 9 disposed in the hollow portion of the shaft 7 so as to be coaxial with the dewatering shaft 7 and supported by a bearing 8 provided in the hollow portion of the dewatering shaft 7.
Is fixed to the upper end. The lower end of the washing shaft 9 is connected to the output side of the speed reduction mechanism 10.

[0005] The motor bracket 11 is formed in a cup shape, is mounted on the housing 12 of the speed reduction mechanism 10 with the opening portion down, and a stator 14 for applying a rotating magnetic field to the rotor 13 is press-fitted into the motor bracket 11. A motor 15 is configured with the rotor 13 facing the motor 14, and the speed reduction mechanism 10 and the motor 15 are arranged on the same axis.

[0006] The rotor 13 is a cylindrical rotor member 1 having a bottom.
6 is provided with a magnet 17, and a fitting hole 18 is provided at the center of the bottom of the rotor member 16. A reduction mechanism input shaft 19 of the reduction mechanism 10 is fitted into the fitting hole 18.

The clutch mechanism 20 switches the rotation of the motor 15 to one of the dehydrating shaft 7 and the washing shaft 9. A clutch spring 20 is provided in a space provided inside the rotor 13.
a, and a clutch driving means 20b for driving the clutch spring 20a is provided outside.

The operation of the above configuration will be described. Washing,
In the rinsing stroke, the clutch driving means 20b of the clutch mechanism 20 releases the clutch spring 20a,
To a state where torque cannot be transmitted. The power of the motor 15 is only transmitted to the stirring blade 5 via the washing shaft 9,
Gives mechanical power to the laundry. Thus, the washing and rinsing of the laundry stored in the washing and dewatering tub 4 proceeds.

When the washing step is completed, a dehydration step is started. In this dehydration step, the water in the washing and dewatering tub 4 is drained, and the clutch driving means 20b of the clutch mechanism 20 drives the clutch spring 20a to move the water to the dehydrating shaft 7. A state in which torque can be transmitted. The power of the motor 15 is supplied to the reduction mechanism input shaft 19.
And the dewatering shaft 7 are connected, and the washing and dewatering tub 4 rotates.

[0010] By rotating the washing and dewatering tub 4,
The water content of the laundry that has been washed and rinsed is squeezed into the water receiving tub 3 from a large number of holes provided on the side surface of the washing and dewatering tub 4 by centrifugal force. Thus, the laundry is automatically dehydrated. In this manner, the laundry put into the washing and dewatering tub 4 automatically finishes the washing, rinsing, and dehydrating steps.

[0011]

In such a conventional structure, if the insulation between the stator 14 and a coil (not shown) wound on the stator 14 is deteriorated, the stator 14 is attached to the motor bracket 11. Since the motor bracket 11 is attached to the housing 12 of the speed reduction mechanism 10, there is a problem that the coil between the stator 14 and the speed reduction mechanism 10 is in a conductive state, and safety is reduced.

The present invention solves the above-mentioned conventional problems. Even if the insulation between the stator and the coil of the stator is deteriorated, the insulation between the coil of the stator and the speed reduction mechanism is ensured to improve safety. It aims to improve.

[0013]

SUMMARY OF THE INVENTION The present invention achieves the above-mentioned object, and comprises rotating a hollow dewatering shaft and a washing shaft arranged coaxially with the dewatering shaft by a motor so that the dewatering shaft can be used for washing and washing. While rotating the spin-drying tub, the rotation of the motor is reduced by the speed reduction mechanism, the washing shaft is rotated by the washing shaft, and the stirring blade disposed in the spin-drying tub is rotated. And the motor is arranged on the same axis line in the speed reduction mechanism via an insulator.

Thus, even if the insulation between the stator and the coil of the stator deteriorates, the insulation between the coil of the stator and the speed reduction mechanism can be ensured, and safety can be improved.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is characterized in that a hollow dewatering shaft for rotating a washing and dewatering tub, a stirring blade disposed in the washing and dewatering tub are rotated and the dewatering is performed. A washing shaft disposed coaxially with a shaft, a motor for rotating the dehydrating shaft and the washing shaft, a reduction mechanism for reducing the rotation of the motor to rotate the washing shaft, and a dehydrating shaft for rotating the motor. And a clutch mechanism for switching to one of the washing shafts, wherein the motor is arranged on the same axis line via an insulator in the speed reduction mechanism, and the insulation between the stator and the coils of the stator is deteriorated by any chance. Even in this case, insulation between the coil of the stator and the speed reduction mechanism can be ensured by the insulator between the speed reduction mechanism and the motor, and safety can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, an insulating material is formed by integrally molding a resin with a motor bracket constituting a motor, and a speed reduction mechanism is formed via the insulating material. The motor is provided, and even if the insulation between the stator and the stator coil deteriorates, the insulation between the stator coil and the reduction mechanism is ensured by the insulator between the reduction mechanism and the motor. It is possible to improve the safety and to improve the strength of the insulator and improve the assemblability because the resin is integrally molded with the motor bracket that constitutes the motor to form the insulator. Can be.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, a plurality of burring holes are provided in a housing constituting the speed reduction mechanism, and a substantially donut-shaped reinforcing plate and an insulating member formed in the motor are provided. A screw that penetrates the object is screwed into the burring hole, and the motor is screwed to the speed reduction mechanism. A substantially donut-shaped reinforcing plate is applied to an insulator formed on the motor, and a substantially donut-shaped By screwing a screw penetrating the reinforcing plate and the insulator of the motor into the burring hole and screwing the motor to the speed reduction mechanism, the motor can be securely fixed to the speed reduction mechanism, and the durability is improved. be able to.

According to a fourth aspect of the present invention, in the third aspect of the present invention, a plurality of holes are provided in a housing constituting a speed reduction mechanism and a substantially donut-shaped reinforcing plate, and the holes are formed in a motor. The convex parts provided on the upper and lower sides of the insulator
It is positioned, and can be positioned between the speed reduction mechanism and the motor, between the motor and the substantially donut-shaped reinforcing plate,
The assemblability can be improved.

According to a fifth aspect of the present invention, in the first or second aspect of the invention, the insulator formed on the motor has a fitting hole at a substantially central portion of the motor. The shaft of the motor and the shaft of the speed reduction mechanism can be easily and accurately aligned with each other, and is fixed to the speed reduction mechanism input shaft of the speed reduction mechanism. The gap between the rotor and the stator can be made substantially constant, the motor efficiency can be improved, and the occurrence of abnormal noise can be prevented.

According to a sixth aspect of the present invention, in the first or second aspect of the present invention, the motor bracket constituting the motor has a substantially cylindrical flange at a substantially central portion of the motor. The insulation is formed by integrally molding the resin to the motor bracket including the flange, and the cylindrical part of the housing of the speed reduction mechanism is fitted to the insulation formed by integrally molding the resin to the flange. ,
The surface between the motor bracket and the cylindrical portion of the housing of the speed reduction mechanism can be brought into contact with each other via an insulator, so that the resistance to a load in the radial direction can be increased.

According to a seventh aspect of the present invention, in the first or second aspect of the present invention, a clutch switching lever for driving a clutch mechanism is provided, and the clutch switching lever is made to penetrate an insulator formed on a motor. When the clutch switching lever is rotated to drive the clutch spring, even if the clutch switching lever is rotated, it does not come into contact with the motor bracket, and insulation between the stator and the coil of the stator is improved. Even in the case of one deterioration, conduction to the motor bracket through the clutch switching lever can be prevented, and safety can be improved.

The invention according to claim 8 is the invention according to claim 1 or 2, further comprising rotation detection means for detecting rotation of the motor, wherein a hole for mounting the rotation detection means is formed in the motor. When the insulation of the rotation detecting means is deteriorated, conduction with the motor bracket is prevented, and safety can be improved.

According to a ninth aspect of the present invention, in the invention of the eighth aspect, a projection is provided on the rotation detecting means, and the projection is fitted into a recess provided on an insulator formed on the motor.
Since the positioning is performed, the accuracy of the mounting position where the rotation detecting means is attached to the motor can be improved, and the rotation detection accuracy of the motor can be improved.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) As shown in FIG. 2, a washing machine main body 21 is provided with a water receiving tank 23 suspended by a suspension 22 so as to prevent dehydration vibration therein. The washing and dewatering tub 24 is arranged rotatably in
A stirring blade 25 for stirring the laundry is rotatably disposed at the inner bottom of the washing / dewatering tub 24.

The washing and dewatering tub 24 is, as shown in FIG.
The agitating blade 25 is fixed to the upper end of a dehydrating shaft 27 supported by a bearing 26 provided at the bottom of the water receiving tank 23.
It is disposed coaxially with the dewatering shaft 27 in the hollow portion of the dewatering shaft 27, and is fixed to the upper end of a washing shaft 29 supported by a bearing 28 provided in the hollow portion of the dewatering shaft 27. The lower end of the washing shaft 29 is connected to the output side of the speed reduction mechanism 30.

The motor bracket 31 is formed in a cup shape and is mounted on the speed reduction mechanism 30 with the opening downward, and a stator 33 for applying a rotating magnetic field to the rotor 32 is press-fitted into the motor bracket 31. 32
Are opposed to each other to form a motor 34, the speed reduction mechanism 30 and the motor 34 are arranged on the same axis, and the motor 34 is attached to the speed reduction mechanism input shaft 35 of the speed reduction mechanism 30.

The rotor 32 includes a first rotor member 37 to which a magnet 36 is fixed and a second rotor member 37 to which a speed reduction mechanism input shaft 35 is fixed.
And the first rotor member 3
7 and the second rotor member 38 are integrally formed by molding with a resin 39 at intervals.

In the motor bracket 31, a substantially cylindrical flange portion 31a is formed substantially at the center of the motor 34, and resin is integrally molded with the motor bracket 31 including the flange portion 31a to form an insulator 40. I have. This insulator 4
Reference numeral 0 denotes a fitting hole 41 at a substantially central portion of the motor 34, and a cylindrical portion 43 of a housing 42 constituting the speed reduction mechanism 30 is fitted into the fitting hole 41.

A plurality of burring holes 44 are provided in a housing 42 constituting the speed reduction mechanism 30, and a substantially donut-shaped reinforcing plate 45 is applied to an insulator 40 formed in the motor 34, and
6 is a substantially donut-shaped reinforcing plate 45 and an insulator 4 of the motor 34.
0, the screw 46 is screwed into the burring hole 44, the motor 34 is screwed to the housing 42 of the speed reduction mechanism 30 via the insulator 40, and the motor 34 is the same as the speed reduction mechanism 30. It is arranged on the axis.

The clutch mechanism 47 switches the rotation of the motor 34 to either the dehydrating shaft 27 or the washing shaft 29. A clutch spring 47a is provided in a space provided inside the rotor 32, and the clutch spring 47a is driven externally. A clutch driving means 47b is provided. In addition, 4
Reference numeral 8 denotes a motor cover that covers a lower opening of the motor bracket 31.

The operation of the above configuration will be described. Washing,
In the rinsing stroke, the clutch driving means 47b of the clutch mechanism 47 releases the clutch spring 47a,
7 cannot be transmitted. The power of the motor 34 is only transmitted to the stirring blade 25 via the washing shaft 29, and gives a mechanical force to the laundry. Thus, the washing and rinsing of the laundry housed in the washing and dewatering tub 24 proceeds.

When the washing step is completed, a dehydration step is started. In this dehydration step, water in the washing and dewatering tub 24 is drained,
The clutch driving means 47b of the clutch mechanism 47 drives the clutch spring 47a so that a rotational force can be transmitted to the dehydrating shaft 27. The power of the motor 34 is connected to the speed reduction mechanism input shaft 35 and the dehydrating shaft 27, and the washing and dehydrating tub 24 rotates.

The rotation of the washing and dewatering tub 24 causes the moisture of the laundry, which has been washed and rinsed, to be condensed into the water receiving tub 23 from a large number of holes provided on the side of the washing and dewatering tub 24 by centrifugal force. Will be issued. Thus, the laundry is automatically dehydrated. In this manner, the laundry put into the washing and dewatering tub 23 automatically finishes the washing, rinsing, and dehydrating steps.

As described above, according to the present embodiment, the washing shaft 2
9. The dehydrating shaft 27 has a coaxial double structure, and the reduction mechanism 30, the clutch mechanism 47, and the motor 34 are arranged in this order from the stirring blade 25 side, and since these are on the same axis, the motor 34 and the reduction mechanism 30 Are integrated, and the center of gravity comes to the center of the water receiving tank 23, so that imbalance is eliminated and vibration during dehydration can be suppressed.

Further, since the motor 34 is arranged on the same axis in the speed reduction mechanism 30 via the insulator 40, even if the insulation between the stator 33 and the coil 33a of the stator 33 deteriorates, With the insulator 40 between the speed reduction mechanism 30 and the motor 34, insulation between the coil 33a of the stator 33 and the speed reduction mechanism 30 can be ensured, and safety can be improved.

The insulator 40 is provided on the motor bracket 3.
1 is formed by integrally molding a resin, and the motor 34 is disposed in the speed reduction mechanism 30 via the insulator 40. Therefore, the strength of the insulator 40 can be improved and the assemblability can be improved. .

The insulator 40 has a fitting hole 41 substantially at the center of the motor 34, and the fitting hole 41
Is fitted, the axis of the motor 34 and the axis of the speed reduction mechanism 30 can be easily and accurately aligned, and the speed reduction mechanism input shaft 35 of the speed reduction mechanism 30 is fitted. Rotor 32 and stator 33 fixed to
Can be made substantially constant.

Further, the motor bracket 31 is
4, a substantially cylindrical flange portion 31a is formed substantially at the center,
Since the resin 40 is integrally molded with the motor bracket 31 including the flange portion 31a to form the insulator 40, the insulator 4 formed by integrally molding the resin with the flange portion 31a is formed.
0 by fitting the cylindrical portion 43 of the housing 42 of the speed reduction mechanism 30 to the motor bracket 31 and the speed reduction mechanism 30.
Between the cylindrical portion 43 of the housing 42 and the cylindrical portion 43 with the insulator 40 interposed therebetween, and the resistance to the load in the radial direction can be increased.

A plurality of burring holes 44 are provided in the housing 42 so that a substantially donut-shaped reinforcing plate 45 and a motor 34 are provided.
A screw 46 penetrating through the insulator 40 formed in the above is screwed into the burring hole 44 and the motor 34 is screwed to the housing 42, so that the substantially donut-shaped reinforcing plate 45 is applied to the insulator 40 of the motor 34. And a substantially donut-shaped reinforcing plate 45
A screw 46 that penetrates the insulator 34 of the motor 34 is screwed into the burring hole 44 to connect the motor 34 to the housing 42.
By screwing the motor 34 to the
And the durability can be improved.

The magnet 36 of the rotor 32 and the stator 3
The first rotor member 37 and the second rotor member 3
The insulation between the coil 33a and the speed reduction mechanism input shaft 35 can be ensured, and the power can be supplied to the speed reduction mechanism 30, the washing shaft 29, and the like. And safety can be improved.

(Embodiment 2) As shown in FIG. 3, the housing 49 constitutes the speed reduction mechanism 30. The housing 49 is provided with a plurality of holes 49a, and the substantially donut-shaped reinforcing plate 50 is also provided with a plurality of holes 50a. Is provided. The insulator 51 is formed by integrally molding a resin with the motor bracket 31 that constitutes the motor 34.
The convex portion 51a is fitted and positioned in the hole 49a provided in the housing 49 and the hole 50a provided in the substantially donut-shaped reinforcing plate 50. Other configurations are the same as those in the first embodiment.

The operation of the above construction will be described. The protrusions 51a provided on the top and bottom of the insulator 51 are fitted into the holes 49a provided on the housing 49 and the holes 50a provided on the substantially donut-shaped reinforcing plate 50, respectively. Since it is positioned, the speed reduction mechanism 3
Positioning between the motor 0 and the motor 34 and between the motor 34 and the substantially donut-shaped reinforcing plate 50 can improve the ease of assembly.

(Embodiment 3) As shown in FIG. 4, the clutch driving means 47b has a clutch switching lever 52 for driving a clutch mechanism 47a, and this clutch switching lever 52 is attached to the motor bracket 31 of the motor 34. An insulator 53 formed by integrally molding a resin is penetrated. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. Since the clutch switching lever 52 penetrates the insulator 53 formed on the motor bracket 31, the rotation of the motor 34 can be switched between the dehydrating shaft 27 and the washing shaft 29. ,
When the clutch switching lever 52 is rotated to drive the clutch spring 47a, even if the clutch switching lever 52 is rotated, the clutch switching lever 52 does not come into contact with the motor bracket 31 and the gap between the stator 33 and the coil 33a of the stator 33 is maintained. Even if the insulation deteriorates, the clutch switching lever 5
2 can be prevented from conducting to the motor bracket 31, and safety can be improved.

(Embodiment 4) As shown in FIG. 5, the rotation detecting means 54 detects the rotation of the motor 34, and is configured by mounting a Hall IC 56 on a connector 55, and the Hall IC 56 is connected to the rotor 32. Mounted facing the magnet 36,
The rotation of the motor 34 is detected by detecting the magnetic flux of the magnet 36 of the rotor 32 by the Hall IC 56, and the rotation detecting means 54 is provided with a projection 57.

The insulator 58 is formed by integrally molding resin with the motor bracket 31 constituting the motor 34. The insulator 58 is provided with a hole 59 for mounting the rotation detecting means 54 and a concave portion 60. The protrusion 57 provided on the rotation detecting means 54 is fitted to the recess 60 for positioning. Other configurations are the same as those in the first embodiment.

The operation of the above arrangement will be described. The hole 59 for mounting the rotation detecting means 54 is inserted into the motor bracket 3.
Since the rotation detecting means 54 is provided on the insulator 58 formed in the step 1, the conduction with the motor bracket 31 is prevented when the insulation of the rotation detecting means 54 is deteriorated, so that the safety can be improved.

Further, since the rotation detecting means 54 is provided with a convex portion 57, and the convex portion 57 is fitted and positioned in the concave portion 60 provided in the insulator 58, the rotation detecting means 54 is attached to the motor 34. The position accuracy can be improved, and the rotation detection accuracy of the motor 34 can be improved.

[0050]

As described above, according to the first aspect of the present invention, the hollow dewatering shaft for rotating the washing and dewatering tub, and the stirring blade disposed in the washing and dewatering tub are rotated. A washing shaft arranged coaxially with the spinning shaft, a motor for rotating the spinning shaft and the washing shaft, a speed reduction mechanism for reducing the rotation of the motor to rotate the washing shaft, and A clutch mechanism for switching the rotation between a dehydrating shaft and a washing shaft; and a motor disposed on the same axis line via an insulator in the speed reduction mechanism. Even in the case of one deterioration, insulation between the coil of the stator and the speed reduction mechanism can be ensured by the insulator between the speed reduction mechanism and the motor, and safety can be improved.

According to the second aspect of the present invention, the resin is integrally molded with the motor bracket constituting the motor to form an insulator, and the motor is disposed on the speed reduction mechanism via the insulator. Even if the insulation between the stator and the stator coil deteriorates, the insulation between the stator coil and the speed reduction mechanism can be ensured by the insulator between the speed reduction mechanism and the motor, improving safety. In addition, the strength of the insulator can be improved, and the assemblability can be improved.

According to the third aspect of the present invention, a plurality of burring holes are provided in a housing constituting a speed reduction mechanism, and a screw penetrating a substantially donut-shaped reinforcing plate and an insulator formed on a motor is provided. Since the screw is screwed into the burring hole and the motor is screwed to the speed reduction mechanism, a substantially donut-shaped reinforcing plate is applied to the insulator formed on the motor, and the substantially donut-shaped reinforcing plate and the motor insulator are penetrated. By screwing the screw into the burring hole and screwing the motor to the speed reduction mechanism, the motor can be securely fixed to the speed reduction mechanism, and the durability can be improved.

According to the fourth aspect of the present invention, a plurality of holes are provided in the housing constituting the speed reduction mechanism and the substantially donut-shaped reinforcing plate, and the holes are provided above and below the insulator formed in the motor. Since the provided protrusions are fitted and positioned, positioning between the speed reduction mechanism and the motor, and between the motor and the substantially donut-shaped reinforcing plate can be performed, and assemblability can be improved.

According to the fifth aspect of the present invention, the insulator formed on the motor has a fitting hole at a substantially central portion of the motor, and the fitting hole forms a reduction mechanism in the housing. Since the cylindrical portion is fitted, the axis of the motor and the axis of the reduction mechanism can be easily and accurately aligned, and the gap between the rotor and the stator fixed to the input shaft of the reduction mechanism of the reduction mechanism is almost constant. As a result, the motor efficiency can be improved, and the occurrence of abnormal noise can be prevented.

According to the invention described in claim 6, the motor bracket constituting the motor has a substantially cylindrical flange portion formed substantially at the center of the motor, and the motor bracket including the flange portion is formed on the motor bracket. Since the insulator is formed by integrally molding the resin, the surface between the motor bracket and the cylindrical part of the housing of the speed reduction mechanism can be brought into contact with each other via the insulator, thereby increasing the resistance to radial loads. it can.

According to the seventh aspect of the present invention, a clutch switching lever for driving a clutch mechanism is provided, and the clutch switching lever is made to penetrate an insulator formed in the motor. Even if the insulation between them deteriorates, conduction to the motor bracket through the clutch switching lever can be prevented, and safety can be improved.

According to the eighth aspect of the present invention, there is provided the rotation detecting means for detecting the rotation of the motor, and the hole for mounting the rotation detecting means is provided on the insulator formed on the motor. If the insulation of the detecting means is deteriorated, conduction with the motor bracket is prevented, and safety can be improved.

According to the ninth aspect of the present invention, the rotation detecting means is provided with a convex portion, and the convex portion is fitted into a concave portion provided on an insulator formed on the motor, and is positioned. The accuracy of the mounting position at which the means is attached to the motor can be improved, and the rotation detection accuracy of the motor can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a washing machine according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the washing machine.

FIG. 3 is a sectional view of a main part of a washing machine according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a washing machine according to a third embodiment of the present invention.

FIG. 5 is a sectional view of a main part of a washing machine according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view of a conventional washing machine.

FIG. 7 is a sectional view of a main part of the washing machine.

[Explanation of symbols]

 Reference Signs List 24 washing and dewatering tank 25 stirring blade 27 dehydrating shaft 29 washing shaft 30 reduction mechanism 34 motor 40 insulator 47 clutch mechanism

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Norimasa Kondo 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd.

Claims (9)

[Claims] A hollow shaft for rotating a washing and dewatering tub; a washing shaft for rotating a stirring blade disposed in the washing and dewatering tub and disposed coaxially with the dewatering shaft; A motor that rotates the shaft and the washing shaft, a reduction mechanism that reduces the rotation of the motor to rotate the washing shaft, and a clutch mechanism that switches the rotation of the motor to one of the dehydrating shaft and the washing shaft, A washing machine in which a motor is disposed on the same axis as the speed reduction mechanism via an insulator. 2. The washing machine according to claim 1, wherein an insulator is formed by integrally molding resin to a motor bracket constituting the motor, and the motor is disposed in the reduction mechanism via the insulator. 3. A plurality of burring holes are provided in a housing constituting a speed reduction mechanism, and a screw penetrating a substantially donut-shaped reinforcing plate and an insulator formed in the motor is screwed into the burring hole. 3. The washing machine according to claim 1, wherein the washing machine is screwed to the speed reduction mechanism. 4. A housing constituting a speed reduction mechanism and a substantially donut-shaped reinforcing plate are provided with a plurality of holes, and convex portions provided above and below an insulator formed on the motor are fitted into the holes and positioned. The washing machine according to claim 3. 5. The insulator formed on the motor has a fitting hole at a substantially central portion of the motor, and a cylindrical portion of a housing constituting a speed reduction mechanism is fitted into the fitting hole.
The washing machine as described. 6. A motor bracket constituting a motor,
The washing machine according to claim 1 or 2, wherein a substantially cylindrical flange portion is formed at a substantially central portion of the motor, and an insulator is formed by integrally molding resin to the motor bracket including the flange portion. 7. The washing machine according to claim 1, further comprising a clutch switching lever for driving a clutch mechanism, wherein the clutch switching lever penetrates an insulator formed in the motor. 8. The washing machine according to claim 1, further comprising rotation detection means for detecting rotation of the motor, wherein a hole for mounting the rotation detection means is provided on an insulator formed on the motor. 9. The washing machine according to claim 8, wherein a projection is provided on the rotation detecting means, and the projection is fitted into a recess provided on an insulator formed on the motor and positioned.