JP2002219294A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-noise washing machine achieving miniaturization of a drive mechanism and cost reduction. SOLUTION: The washing machine includes a washing/drying tub 5, an agitator 50 disposed inside the tub 5, and a drive mechanism 8 disposed in the lower portion of the tub 5 for driving the tub 5 and the agitator 50 for rotation. The drive mechanism 8 is contained in one housing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly, to a washing machine in which a washing and dewatering tub and a stirring blade are rotated by a driving mechanism having a speed reducer.

[0002]

2. Description of the Related Art FIG. 4 is an enlarged sectional view of a main part of a conventional washing machine. In the drawing, reference numeral 5 denotes a washing and dewatering tub disposed in an outer tub (not shown) of a fully automatic washing machine, and a rotating force of a motor (not shown) is provided below the washing and dehydrating tub during washing and rinsing. A deceleration mechanism 9, a clutch mechanism 21, which transmits to the washing / dehydration tub 5 and the stirring blades 50 at the time of spin-drying by transmitting the speed to the stirring blades 50 arranged at the bottom portion of the water tank 5 and rotates the two 5, 50 integrally. A drive mechanism 8 including a transmission mechanism (such as the pulley 20) and a motor is provided.

In the drive mechanism 8, an upper portion 11 is a tub shaft fixed to the bottom of the washing and dewatering tub 5, and a lower portion thereof is fitted to an upper hollow shaft portion of a speed reducer housing 13 of the speed reduction mechanism 9. The tank shaft 11 and the reduction gear housing 13 are supported by the housing 10 via radial bearings 12a and 12b. 14 is an oil-impregnated metal 26a, 2 in the tank shaft 11.
A stirring shaft is inserted and supported through 6b. A stirring blade 50 is fixed to an upper portion, and a lower end is connected to a lower speed side of the speed reducer 15 of the speed reduction mechanism 9. Reference numeral 16 denotes a rotary shaft inserted and supported in the lower hollow shaft portion of the speed reducer housing 13 via an oil-impregnated metal 26c.
And the internal gear 1 provided in the reduction gear housing 13
9 meshes with the planetary gear 18 meshing with the rotating shaft 1
When 6 rotates, its rotational force is transmitted to the speed reducer 15 and transmitted to the stirring shaft 14 while decelerating. In addition, the rotating shaft 16
Is connected to a pulley 20 to which the rotational force of the motor is transmitted via a belt (not shown). 22a,
Reference numeral 22b denotes first and second clutch cases of the clutch mechanism 21, which are provided on the outer periphery of the lower end of the rotating shaft 16 and the outer periphery of the lower end of the lower hollow shaft of the reducer housing 13, respectively. A clutch spring 23 is interposed inside. Then, by operating a clutch lever (not shown) of the clutch mechanism 21, the tightening of the clutch spring 23 becomes free or impossible, and the rotational force of the rotary shaft 16 is transmitted or cut off to the tank shaft 11.

[0004] In the washing machine thus constructed, in the washing step or the rinsing step, the rotational force of the motor is reduced and transmitted to the stirring shaft 14 via the rotating shaft 16 and the speed reducer 15, and the stirring blade 50 is moved. Spin at low speed to wash and spin off 5
Wash or rinse the laundry inside. In the spin-drying step, the rotational force of the motor is transmitted to the tub shaft 11 via the rotary shaft 16 and the speed reducer housing 13, and the washing and spin-drying tub 5 is rotated at a high speed so that the laundry in the spin-drying and spin-drying tub 5 is rotated. To dehydrate. Incidentally, such a washing machine is disclosed in, for example, JP-A-63-1.
No. 25844 and the like.

[0005]

The conventional washing machine as described above has, in its drive mechanism 8, a housing 10 accommodating a reduction mechanism 9 including a reduction gear 15 and a reduction gear housing 13, and a motor. There are two housings, a housing (not shown) and a separate housing, so that the pulley 20 connected to the rotating shaft 16 and the pulley (not shown) on the motor side are connected via a belt. It has a configuration. Therefore, the noise source is motor,
There were three places of the transmission mechanism including the speed reduction mechanism 9 and the belt and the pulley 20, and the loud noise was generated.
Also, the assembly of the drive mechanism 8 is complicated because there are three parts, the motor, the speed reduction mechanism 9 and the transmission mechanism.

Therefore, a washing machine in which the transmission mechanism is omitted and the motor and the speed reduction mechanism 9 are connected is considered, and FIG. 5 shows such a washing machine. In this washing machine, the rotating shaft 16 in FIG. 4 is replaced by an output shaft 25 provided on a rotor 24a of a motor 24. Similar to the washing machine in FIG. There are two housings, a housing 10 that houses the speed reduction mechanism 9 including the machine housing 13 and the like, and a housing 26 that houses the motor 24, each of which is configured separately. For this reason, the speed reduction mechanism 9 and the motor 24 are disposed vertically, and a sufficient space is required in the height direction of the lower portion of the washing and dewatering tub 5 of the washing machine, which may lead to an increase in the size of the washing machine. Further, the structure in which the two housings 10 and 26 are stacked requires a large amount of housing members. Further, since there are two noise sources, the motor 24 and the speed reduction mechanism 9, the noise generated during the operation of the washing machine was large even if the transmission mechanism was omitted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a washing machine that can reduce the size and cost of a drive mechanism and that has low noise. is there.

[0008]

A washing machine according to the present invention comprises:
In a washing machine including a washing and dewatering tub, a stirring blade disposed in the washing and dewatering tub, and a drive mechanism disposed below the washing and dewatering tub and configured to rotate the washing and dewatering tub and the stirring blade. , The drive mechanism is housed in one housing.

A washing machine according to the present invention comprises: a washing and dewatering tub;
In a washing machine having a stirring blade disposed in a washing and dewatering tub and a drive mechanism disposed below the washing and dewatering tub and configured to rotationally drive the washing and dewatering tub and the stirring blade, the driving mechanism includes a washing mechanism. It has a motor for rotating the dewatering tub and the stirring blade, and a reduction mechanism for reducing the rotation of the stirring blade, and the motor and the reduction mechanism are housed in one housing.

A washing machine according to the present invention comprises: a washing and dewatering tub;
In a washing machine having a stirring blade disposed in a washing and dewatering tub and a drive mechanism disposed below the washing and dewatering tub and configured to rotationally drive the washing and dewatering tub and the stirring blade, the driving mechanism includes a washing mechanism. A motor that rotates the spinning / dewatering tub and the stirring blade, a deceleration mechanism that reduces the rotation of the stirring blade, and a clutch mechanism that transmits or shuts off the rotational force to the washing and dewatering tub,
The reduction mechanism and the clutch mechanism are housed in one housing.

[0011] In the washing machine according to the present invention, a part of a speed reducer housing accommodating a speed reducer constituting a speed reduction mechanism is formed by a part of a rotor constituting a motor.

In the washing machine according to the present invention, a lower portion of a speed reducer housing accommodating a speed reducer constituting a speed reduction mechanism is fitted into a recess provided in a rotor constituting a motor, and a bottom portion of the speed reducer housing is attached to the rotor. Formed by the bottom of the concave portion.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is an enlarged sectional view of an essential part of the first embodiment of the present invention and an explanatory diagram of its operation,
FIG. 2 is a schematic diagram of the embodiment of the present invention. In the figure, reference numeral 1 denotes a substantially box-shaped outer tub having an open upper portion of a fully automatic washing machine, in which a bottomed cylindrical water tub 4 is elastically supported via a hanging rod 2 and a vibration absorbing spring 3 so as to be swingable. Have been. Reference numeral 5 denotes a washing and dewatering tub disposed in the water tub 4 for washing, rinsing, and dewatering the laundry. A balancer 6 is attached to an upper end of the washing and dewatering tub. The vibration generated from the displacement is reduced. 7
Is an outer lid for opening and closing the upper opening of the outer tub 1 for taking the laundry in and out of the washing and dewatering tub 5, and 8 is a washing and dehydrating tub 5 in the outer tub 1.
, A drive mechanism 8 provided at a lower portion of the vehicle, and includes a speed reduction mechanism 9, a motor 24, a clutch mechanism, and the like.

In the drive mechanism 8, an upper portion 11 is a tub shaft fixed to the bottom of the washing and dewatering tub 5, and a lower portion thereof is fitted into an upper hollow shaft portion of a speed reducer housing 13 having a substantially convex cross section of the speed reduction mechanism 9. The tank shaft 11 and the reducer housing 13 are supported by the housing 10 via radial bearings 12a and 12b. Reference numeral 14 denotes a stirring shaft inserted and supported in the tank shaft 11 via oil-impregnated metals 26a and 26b.
The stirring blade 50 is fixed to the upper part, and the lower end part is connected to the low speed side of the speed reducer 15 of the speed reduction mechanism 9.

Reference numeral 24 denotes a motor having a rotor 24a having a substantially concave cross section, a stator 24b provided on the outer periphery of the rotor 24a, and an output shaft 25 integrally provided substantially at the center of the bottom of the rotor 24a. The lower end of the reduction gear housing 13 is fitted into the recess, and the bottom 24 c of the recess of the rotor 24 a also serves as the bottom of the reduction gear housing 13. The lower end of the output shaft 25 is supported by the housing 10 via the radial bearing 12c, and the upper end is the sun gear 17 of the speed reducer 15 and meshes with the internal gear 19 provided on the speed reducer housing 13. When the output shaft 25 rotates, its rotational force is transmitted to the speed reducer 15, and is transmitted to the stirring shaft 14 while decelerating.

Reference numeral 27 denotes a substantially cylindrical fixed body integrally provided at an upper portion of the enlarged diameter portion of the speed reducer housing 13, having an outwardly projecting flange 27a at an upper end thereof, and a lower portion of the flange 27a. Teeth 27b are provided on the outer periphery in the vertical direction. 28 is a fixed body 27 (reduction gear housing 1
3) A cross section substantially L connecting the rotor 24a and the rotor 24a in a detachable manner.
The movable body is shaped like a letter.
7b is provided with teeth 28a meshing with the rotor 2b.
4a, teeth 31a provided at the upper end of the back yoke 31
When the moving body 28 is moved downward, the reduction gear housing 13 and the rotor 24a (the back yoke 31) are engaged and connected to each other, as shown on the right side of FIG. As shown in the left side of FIG. 1, the two members 13 and 24a are separated from each other and the connection is released. Reference numeral 29 denotes a clutch spring interposed between the flange 27a of the fixed body 27 and the outer peripheral side of the moving body 28. The clutch spring 29 constantly urges the moving body 28 downward. Locked to the upper end, the tank shaft 11 rotates with the rotation of the output shaft 25. Numeral 30 denotes an electromagnetic solenoid unit provided corresponding to the moving body 28. When energized, the moving body 28 moves upward against the biasing force of the clutch spring 29, as shown in the left side of FIG. Then, the lock with the back yoke 31 is released, and the tank shaft 11 does not rotate because the rotational force of the output shaft 25 is cut off. And
The clutch mechanism includes a fixed body 27, a moving body 28, a clutch spring 29, and an electromagnetic solenoid unit 30.

The motor 24 shown in FIG. 1 is a DC motor. In this case, the lower portion of the speed reducer housing 13 is provided at the lower portion of the speed reducer housing 13 inside the back yoke 31 in the recess of the rotor 24a via a sealing material 32 and the like. A necessary lubricant (lubricant) is enclosed in the gear. When the motor 24 is an induction motor, a recess for accommodating the speed reduction mechanism 9 is provided in the upper part of the rotor core, and the reduction gear housing 13 is provided on the inner peripheral side of the recess with a sliding member necessary for the reduction gear via a sealing material 32 or the like. A fluid (lubricant) is enclosed.

In the first embodiment thus constructed, in the washing step or the rinsing step, first, the electromagnetic solenoid unit 30 is energized to move the moving body 28 upward against the urging force of the clutch spring 29. Back yoke 31
Is released, and the reduction gear housing 13 and the rotor 24a are detached to release the connection. Next, when the motor 24 is driven, the rotor 24a and the output shaft 25
Rotates, and the rotating force is transmitted through the reduction gear 15 to the stirring shaft 14.
Then, the stirring blade 50 is rotated at a low speed to wash or rinse the laundry in the washing and dewatering tub 5. At this time,
The tank shaft 11 does not rotate because the torque of the output shaft 25 is cut off by the clutch mechanism.

In the dehydrating step, the moving body 28 is moved downward by the urging force of the clutch spring 29, is locked with the back yoke 31, and engages and connects the reduction gear housing 13 with the rotor 24a. Next, when the motor 24 is driven, the rotor 24a and the output shaft 25 rotate, and the rotational force is applied to the moving body 28 and the reduction gear housing 1.
The washing and dewatering tub 5 is rotated at high speed to transmit the laundry to the tub shaft 11 to dehydrate the laundry in the washing and dewatering tub 5. At this time, the rotational force of the output shaft 25 is also transmitted to the stirring shaft 14 via the speed reducer 15, and the stirring blade 50 also rotates.

As described above, the lower end of the reduction gear housing 13 is fitted into the recess of the rotor 24a of the motor 24, and the bottom 24c of the recess of the rotor 24a also serves as the bottom of the reduction gear housing 13. Is constituted by the fixed body 27, the moving body 28, the clutch spring 29 and the electromagnetic solenoid unit 30, so that the speed reduction mechanism 9, the motor 24 and the drive mechanism 8 having the clutch mechanism
Can be accommodated in one housing 10. As a result, the drive mechanism 8 can be made compact, the amount of housing members can be reduced, and the noise source can be reduced to one.
It is possible to obtain a washing machine capable of reducing the size of the drive mechanism 8 and reducing noise at low cost.

In the first embodiment, the moving body 28 is constantly urged downward by the clutch spring 29, and the energizing of the electromagnetic solenoid unit 30 causes the moving body 28 to resist the urging force of the clutch spring 29. The moving body 28 may be urged upward by the clutch spring 29 and moved downward by the electromagnetic solenoid unit 30.

Embodiment 2 FIG. FIG. 3 is an enlarged cross-sectional view of a main part of a second embodiment of the present invention and an explanatory diagram of its operation. In the second embodiment, the speed reduction mechanism 9 and the clutch mechanism of the drive mechanism 8 according to the first embodiment are different from each other. The structure has been changed.

In the figure, 11 is a washing and dewatering tub 5 at the top.
A tank shaft fixed to the bottom of the housing is supported by the housing 10 via a radial bearing 12a, and a stirring shaft 14 is inserted inside the housing 10 through oil-containing metals 26a and 26b. The stirring shaft 14 has a stirring blade 50 fixed to an upper portion, a lower end portion rotatably supported by the housing 10 via a radial bearing 12c, and an integrated portion substantially at the center of the bottom of the rotor 24a of the motor 24. Is provided.

Reference numeral 15 denotes a speed reducer which is a straight bevel gear 33 meshing with the teeth provided in the recess of the rotor 24a, a cross shaft face gear 34 provided orthogonally to the straight bevel gear 33, and a cross shaft face at the lower end. A connection gear 3 having teeth meshing with the gear 34 and an upper end integrally provided with the stirring shaft 14;
5, and the lower end of the reduction gear 15 has the rotor 2
4a is housed in a speed reducer housing 13 fitted in the recess.

Reference numeral 36 denotes a movable body having a reverse convex shape in cross section for removably connecting the connection shaft 35 of the tank shaft 11, the reduction gear housing 13 and the reduction gear 15, and a lower end thereof.
3 is slidably fitted between the upper end of the connecting gear 35 and the upper end of the connecting gear 35, and is provided in the vertical direction of the inner periphery and the outer periphery of the lower end in the vertical direction of the outer periphery of the upper end of the connecting gear 35. Tooth 3
5a and the teeth 36a, 3 meshing with the teeth 13a provided in the vertical direction on the upper inner periphery of the reduction gear housing 13, respectively.
6b is provided. Further, the upper end of the moving body 36 is slidably fitted to the lower end of the tank shaft 11, and the moving body 3
In the vertical direction on the inner circumference of the upper end of the tooth 6, there is provided a tooth 36c that meshes with the tooth 11a provided on the outer circumference of the lower end of the tank shaft 11 in the vertical direction. When the moving body 36 is moved downward, as shown on the right side of FIG. 3, the connecting gear 35, the speed reducer housing 13 and the tank shaft 11 are engaged and connected. As shown on the left, connecting gear 3
5 is disconnected and the connection is released. 37 is a clutch spring interposed between the reduction gear housing 13 and the moving body 36,
The moving body 36 is constantly urged upward, whereby the lower end of the moving body 36 is released from the engagement with the connection gear 35,
The tank shaft 11 does not rotate because the rotational force of the stirring shaft 14 is cut off. Numeral 38 denotes an electromagnetic solenoid unit provided corresponding to the moving body 36, and teeth 38a meshing with teeth 36d provided in the vertical direction on the outer periphery of the upper end of the moving body 36 are provided in the vertical direction on the inner side thereof. Electromagnetic solenoid unit 3
8, the moving body 36 is connected to the clutch spring 3
7, the tank shaft 11 is locked by the upper end of the connecting gear 35 and rotates with the rotation of the stirring shaft 14, as shown on the right side of FIG. The clutch mechanism includes a moving body 36, a clutch spring 37, and an electromagnetic solenoid unit 38.

The motor 24 shown in FIG. 3 is a DC motor. In this case, the lower part of the reduction gear housing 13 is fitted into the concave part of the rotor 24a, and the bottom part 24c of the concave part of the rotor 24a is Also serves as.
When the motor 24 is an induction motor, a recess for accommodating the speed reduction mechanism 9 is provided in the upper portion of the rotor core, and the lower portion of the speed reducer housing 13 is fitted into the recess, and the bottom of the speed reducer housing 13 is formed by the bottom of the recess. To also serve as

In the second embodiment constructed as described above, in the washing step or the rinsing step, the moving body 36 is held upward by the urging force of the clutch spring 29, and the engagement with the connecting gear 35 is released. Then, the reduction gear housing 13 and the rotor 24a are separated from each other, and the connection is released. Next, when the motor 24 is driven, the rotor 24a
Then, the stirring shaft 14 is rotated, and the rotating force is reduced by the speed reducer 15 to wash or rinse the laundry in the washing and dewatering tub 5 while rotating the stirring blade 50 at a low speed. At this time, the rotating force of the stirring shaft 14 is cut off by the clutch mechanism and the tank shaft 11 does not rotate.

In the dehydrating step, the electromagnetic solenoid unit 38 is energized to move the moving body 36 downward against the urging force of the clutch spring 29, thereby engaging with the connecting gear 35, as well as the rotor 24a and the connecting gear. 35, the reduction gear housing 13 and the tank shaft 11 are engaged and connected. Next, when the motor 24 is driven, the rotor 24a and the stirring shaft 1 are rotated.
4 rotates, and the rotating force is transmitted to the tub shaft 11 via the reduction gear housing 13 and the moving body 36, and the washing and dewatering tub 5 is rotated.
Is rotated at a high speed to dehydrate the laundry in the washing and dewatering tub 5. At this time, the rotational force of the stirring shaft 14 is also transmitted to the speed reducer 15, but is also transmitted to the speed reducer housing 13 and the like, so that the speed reduction effect by the speed reducer 15 is not obtained and the tank shaft 11 rotates at high speed. .

As described above, the lower end of the reduction gear housing 13 is fitted into the recess of the rotor 24a of the motor 24, and the bottom 24c of the recess of the rotor 24a also serves as the bottom of the reduction gear housing 13. Rotor 2 at lower end
4a, the rotation of the rotor 24a is directly transmitted to the stirring shaft 14, and the clutch mechanism is constituted by the moving body 36, the clutch spring 37, and the electromagnetic solenoid unit 38. ,
One drive mechanism 8 having a motor 24 and a clutch mechanism
In one housing 10. As a result, the drive mechanism 8 can be made compact to reduce the amount of the housing member, and the noise source can be provided at one place, so that the drive mechanism 8 can be reduced in size and the noise can be reduced at low cost. Can be obtained.

In the above-described second embodiment, the moving body 36 is constantly biased upward by the clutch spring 37, and the moving body 36 is pressed against the biasing force of the clutch spring 37 by energizing the electromagnetic solenoid unit 38. The moving body 36 may be urged downward by the clutch spring 37 and moved upward by the electromagnetic solenoid unit 38.

[0031]

As described above, the washing machine according to the present invention comprises a washing and dewatering tub, a stirring blade disposed in the washing and dewatering tub,
In a washing machine having a drive mechanism disposed at the lower part of the washing and dewatering tub and rotating and driving the washing and dewatering tub and the stirring blade,
Since the drive mechanism is housed in one housing, the drive mechanism can be made compact and the amount of housing members can be reduced. In addition, a single noise source can be provided. This makes it possible to obtain a washing machine in which the drive mechanism can be reduced in size and noise can be reduced at low cost.

The washing machine according to the present invention comprises:
In a washing machine having a stirring blade disposed in a washing and dewatering tub and a drive mechanism disposed below the washing and dewatering tub and configured to rotationally drive the washing and dewatering tub and the stirring blade, the driving mechanism includes a washing mechanism. It has a motor for rotating the dewatering tub and the stirring blade, and a speed reduction mechanism for reducing the rotation of the stirring blade. Since the motor and the speed reduction mechanism are housed in one housing, the drive mechanism is compacted to reduce the amount of housing members. In addition, it is possible to provide a single noise source, and to obtain a washing machine that can reduce the size of the drive mechanism and reduce noise at low cost.

The washing machine according to the present invention comprises:
In a washing machine having a stirring blade disposed in a washing and dewatering tub and a drive mechanism disposed below the washing and dewatering tub and configured to rotationally drive the washing and dewatering tub and the stirring blade, the driving mechanism includes a washing mechanism. A motor that rotates the spinning / dewatering tub and the stirring blade, a deceleration mechanism that reduces the rotation of the stirring blade, and a clutch mechanism that transmits or shuts off the rotational force to the washing and dewatering tub,
Since the speed reduction mechanism and the clutch mechanism are housed in one housing, the drive mechanism can be made more compact and cost reduction can be achieved, and the noise source can be located at one place.
A washing machine in which the drive mechanism can be reduced in size and noise can be reduced.

In the washing machine according to the present invention, a part of the reduction gear housing accommodating the reduction gear constituting the reduction mechanism is formed by a part of the rotor constituting the motor, so that the drive mechanism can be downsized. be able to.

In the washing machine according to the present invention, a lower portion of a speed reducer housing in which a speed reducer constituting a speed reduction mechanism is accommodated in a recess provided in a rotor constituting a motor, and a bottom portion of the speed reducer housing is attached to the rotor. Since it is formed by the bottom of the recess, the size and cost of the drive mechanism can be reduced.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part according to a first embodiment of the present invention and an explanatory diagram of its operation.

FIG. 2 is a schematic diagram of an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a main part according to a second embodiment of the present invention and an explanatory diagram of its operation.

FIG. 4 is an enlarged sectional view of a main part of a conventional washing machine.

FIG. 5 is an enlarged sectional view of a main part of another conventional washing machine.

[Explanation of symbols]

5 washing and dewatering tub, 8 drive mechanism, 9 reduction mechanism, 10
Housing, 13 reducer housing, 15 reducer,
24 motors, 24a rotors, 50 stirring blades.

Continued on the front page (72) Inventor Masayuki Tsunoda 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Hideaki Maeyama 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Co., Ltd. Inside the company (72) Inventor Tatsuaki Shimizu 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Masao Tani 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation F term (reference) 3B155 BA03 BB18 HB10 HB17 HB20 HB28 HB29 MA02 3J063 AA31 AB12 AC01 BB25 BB41 BB48 CA01 CB02 CC23 CC24

Claims (5)

[Claims] 1. A washing and dewatering tub, a stirring blade disposed in the washing and dewatering tub, and a drive mechanism disposed below the washing and dewatering tub for rotating and driving the washing and dewatering tub and the stirring blade. A washing machine comprising: a washing machine, wherein the drive mechanism is housed in one housing. 2. A washing and dewatering tub, a stirring blade disposed in the washing and dewatering tub, and a drive mechanism disposed below the washing and dewatering tub for rotating and driving the washing and dewatering tub and the stirring blade. Wherein the drive mechanism has a motor for rotating the washing / dewatering tub and the stirring blades and a speed reduction mechanism for reducing the rotation of the stirring blades, and the motor and the speed reduction mechanism are provided in one housing. A washing machine characterized by being housed. 3. A washing and dewatering tub, a stirring blade disposed in the washing and dewatering tub, and a drive mechanism disposed below the washing and dewatering tub for rotating and driving the washing and dewatering tub and the stirring blade. Wherein the drive mechanism transmits or shuts off a rotational force to the washing and dewatering tub and a motor for rotating the stirring blade, a deceleration mechanism for reducing the rotation of the stirring blade and the washing and dewatering tub. A washing machine, comprising: a clutch mechanism; a motor, a speed reduction mechanism, and a clutch mechanism housed in a single housing. 4. The washing machine according to claim 2, wherein a part of a speed reducer housing that houses a speed reducer that forms a speed reduction mechanism is formed by a part of a rotor that forms a motor. 5. A lower part of a speed reducer housing in which a speed reducer constituting a speed reduction mechanism is accommodated in a concave part provided in a rotor constituting a motor, and a bottom part of the reducer housing is fitted to a bottom part of a concave part of the rotor. The washing machine according to claim 2, wherein the washing machine is formed by: