JP2001190890A - Washing machine - Google Patents

Abstract

(57) [Summary] [Problem] To cope with an increase in washing capacity and suppress occurrence of imbalance during dehydration. A dehydrating tank is rotatably arranged in a receiving cylinder, a stirring blade is rotatable on an inner bottom of the dehydrating tank, and a speed reducing mechanism, a meshing clutch mechanism are provided on a bottom of the receiving cylinder. , The drive motors 32 are arranged in this order,
The positions of the centers of gravity of the dewatering tub 24, the speed reduction mechanism 30, and the drive motor 32 are made to coincide with the rotation center, thereby suppressing imbalance during dehydration. Further, the drive motor 32 includes the speed reduction mechanism 30 and the meshing clutch mechanism 33, and the rotational force transmitting portion of the meshing clutch 33 is formed in the rotor, so that the number of parts can be reduced and the meshing clutch can be made thinner. It is possible to prevent a large volume below the main body 21 from being taken up, which corresponds to an increase in washing capacity. In addition, the electromagnetic brake can be used during dehydration and the braking performance is improved, so that the washing time can be reduced and the washing capacity can be increased.

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 clothes used in ordinary households, and rinsing with a stirring blade rotating at a low speed, and performing dehydration by rotating a dehydration tub at a high speed.

[0002]

2. Description of the Related Art A conventional fully automatic washing machine is shown in FIG.
The configuration is as shown in FIG. That is, the receiving cylinder 3 supported by the suspension 2 is provided in the main body 1,
The receiving cylinder 3 is provided with a dehydration tub 4 also serving as a washing tub (hereinafter, simply referred to as a dehydration tub 4). The dewatering tub 4 has an open top so that laundry can be put in from the top.
The bottom has a stirring blade 5 and the side has a number of holes.

[0003] The dewatering tub 4 includes a bearing 6 provided on the bottom surface of the receiving cylinder 3.
Fixed to a dehydrating shaft 7 supported by the Further, the stirring blade 5 is fixed to a washing shaft 9 supported by a bearing 8 inside the dewatering shaft 7. The washing shaft 9 is connected to a speed reduction mechanism 10, and a rotor 11a of a drive motor 11 is connected to the speed reduction mechanism input shaft 10a. The drive motor 11 includes a rotor 11a and a stator 11b provided to face a magnet provided on the outer periphery of the rotor 11a. The rotor 11a is rotated by a rotating magnetic field of the stator 11b. Rotor 11 of reduction shaft input shaft 10a
The mounting portion of a is shaved on four sides, and the mounting hole of the rotor 11a is shaped to fit into the hole to transmit the rotational force of the rotor 11a. In addition, the reduction mechanism input shaft 10a has:
It has a spring clutch mechanism 12 for switching and transmitting the rotation of the drive motor 11 to the washing shaft 9 or the dehydrating shaft 7.

The spring clutch mechanism 12 is formed by bending a clutch input boss portion 12a, a clutch spring 12b, and an end portion of the clutch spring 12b, which are provided with holes so as to be fitted into portions of the speed reduction mechanism input shaft 10a formed by cutting the four surfaces. A control claw portion 12c provided, a release sleeve 12d having a notch into which the control claw portion 12c provided by bending an end of the clutch spring 12b is fitted, and a clutch driving means 12f engaged with a stopper 12e of the release sleeve 12d. And a clutch output boss 12g of the dehydrating shaft 7 around which the clutch spring 12b is wound.

In the above-described configuration, in the agitating washing and rinsing strokes, the clutch driving means of the spring clutch mechanism 12 engages the stopper 12f with the stopper 12e of the release sleeve 12d, and the control pawl provided by bending the end of the clutch spring 12b. When the clutch 12c is fixed, the clutch spring 12b cannot be wound around the clutch input boss 12a, and even if the clutch input boss 12a rotates, the rotation cannot be transmitted to the clutch output boss 12g of the dehydrating shaft 7. The rotation of the drive motor 11 is only transmitted to the stirring blade 5 via the washing shaft 9 and gives a mechanical force to the laundry. Thus, the washing and the rinsing process of the laundry stored in the dewatering tub 4 proceeds.

In the dewatering process, the clutch driving means 12f of the spring clutch mechanism 12 is moved to the release sleeve 1
The control claws 12 are disengaged from the 2d stoppers 12e and bent at the ends of the clutch springs 12b.
When c is released, the clutch spring 12b winds around the clutch input boss 12a, and the clutch input boss 1
2a is rotated, the clutch output boss 12 of the dehydrating shaft 7 is rotated.
Transmit the rotation to g. The rotation of the drive motor 13 is controlled by the spinning shaft 7.
, And is transmitted to the dehydration tub 4 only through the rotation of the dehydration tub 4. The water content of the laundry that has completed the agitating washing and the rinsing process by the rotation of the dewatering tub 4 is squeezed out into the receiving cylinder 3 from a large number of holes provided on the side surface of the dewatering tub 4 by centrifugal force. Thus, the laundry is automatically dehydrated.

The rotating shaft of the drive motor 13 and the dewatering tank 7
By disposing the rotation center on the coaxial line, the dewatering tank 7,
The position of the center of gravity of the receiving cylinder 2 and the like and the position of the center of gravity of the drive motor 13 are made substantially coincident with each other, so that the effect of suppressing imbalance particularly during dehydration can be exerted.

[0008]

However, in the conventional washing machine, the braking performance during dehydration must be improved with respect to the increase in the washing capacity. The torque of the drive motor 13 had to be increased. However, the spring clutch mechanism 12
Therefore, the electromagnetic brake by the motor cannot be actuated at the time of dehydration stop, and the enlargement of the mechanical brake cannot be avoided. In addition, the drive motor 13 is increased in size in order to increase the torque, and the drive unit is inevitably increased in size.

SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and avoids an increase in the size of a drive section due to an increase in the size of a drive motor, and increases the washing capacity of an electromagnetic brake capable of improving braking performance during dehydration. It is an object of the present invention to provide a washing machine capable of coping with the following.

[0010]

According to the present invention, in order to solve the above-mentioned problems, a speed reduction mechanism and a drive motor are disposed coaxially, and a meshing clutch mechanism transmits a rotation of the drive motor to a dehydrating shaft. A drive unit that comes into contact with or separates from the force transmission unit and the rotation force transmission unit is provided, a part of the rotation force transmission unit is formed on the rotor of the drive motor, and the speed reduction mechanism and the meshing clutch are included in the drive motor. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention described in claim 1 is directed to a dehydrating shaft fixedly rotating a dewatering tub, and a washing machine arranged in the dehydrating shaft fixed with a stirring blade disposed in the dehydrating tub. Shaft, a drive motor for driving the spinning shaft and the washing shaft, a speed reduction mechanism for reducing the rotation of the drive motor and transmitting the rotation to the washing shaft, and a meshing clutch for switching the rotation of the driving motor to one of the spinning shaft and the washing shaft. The washing and dehydrating shafts are coaxial and have a double structure. From the stirring blade side, a speed reduction mechanism, a meshing clutch mechanism, and a drive motor are arranged in this order. These are on the same axis, and the drive motor is decelerated. A washing machine including a mechanism and a meshing clutch mechanism, and a part of the meshing clutch mechanism is formed in a rotor of a drive motor.

According to this embodiment, the speed reduction mechanism, the meshing clutch mechanism, and the drive motor are located on the same axis, and the position of the center of gravity of the dewatering tub and the receiving cylinder and the rotation center of the dewatering tub are determined. And the occurrence of unbalance during dehydration can be suppressed, and the drive motor incorporates a speed reduction mechanism and a meshing clutch mechanism. Even if the rotor height is increased, the overall height dimension does not change. Also, since a part of the rotation transmitting portion of the meshing clutch mechanism is formed in the rotor of the drive motor,
The number of parts can be reduced, and assemblability can be improved.
In addition, since the meshing clutch mechanism is thinner and smaller than the spring clutch mechanism, it is possible to prevent the washing machine from having a large volume below the main body.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, there is provided a case including a dehydrating shaft and having a bearing for supporting the dehydrating shaft. Side, and a meshing clutch mechanism is provided in this recessed portion. With this configuration as the embodiment, the drive motor approaches the case, and the length of the washing-side input shaft can be reduced.

According to a third aspect of the present invention, in addition to the first or second aspect, a dehydration shaft is included,
A case having a bearing for supporting the dewatering shaft is provided, and this case is composed of upper and lower two parts, and an attachment part for the drive motor is provided at a joint between the upper and lower parts. By adopting this configuration as the embodiment, even if the drive motor becomes large, the drive motor can approach the case and can be downsized.

According to a fourth aspect of the present invention, in addition to any one of the first to third aspects of the present invention, there is provided a case including a dewatering shaft and having a bearing for supporting the dewatering shaft. Is composed of upper and lower parts, and a bead is provided on the entire periphery of a portion where the upper and lower parts are joined.
By adopting this configuration as the embodiment, the thickness of the case can be reduced, and at the same time, the water overflowing from the receiving cylinder can be prevented from entering the deceleration mechanism, the clutch mechanism, and the drive motor by the beads.

According to a fifth aspect of the present invention, in addition to the first aspect of the present invention, there is provided a case including a dehydrating shaft and having a bearing for supporting the dehydrating shaft. Is composed of upper and lower parts, and is composed of the same upper and lower parts. By using this configuration as an embodiment, sharing of parts can be achieved.

According to a sixth aspect of the present invention, in addition to the first or second aspect, a dehydration shaft is included,
A case having a bearing for supporting the dewatering shaft is provided. The case is composed of upper and lower parts, and the upper case is composed of a motor stator. By adopting this configuration as the embodiment, the number of parts can be reduced, and the accuracy of mounting the rotor can be increased by integrating the stator portion and the bearing of the motor.

According to a seventh aspect of the present invention, in addition to the first or second aspect, a dehydration shaft is included,
A case having a bearing for supporting the dewatering shaft is provided, and this case is composed of upper and lower parts, and a lower case is composed of a motor stator. By adopting this configuration as the embodiment, the number of parts can be reduced, and the accuracy of mounting the rotor can be increased by integrating the stator portion and the bearing of the motor.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

[0020]

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described. Embodiment 1 is an embodiment of the invention according to claim 1. FIG. 1 is a sectional view showing the overall configuration of the present embodiment. A receiving cylinder 23 suspended by a suspension 22 is provided in the main body 21 so as to prevent dehydration vibration.
A dewatering tub 24 is rotatably disposed inside the
A stirring blade 25 for stirring the laundry is rotatably disposed at the inner bottom of the container. The dewatering tub 24 is fixed to the upper end of a dewatering shaft 27 that is supported by a bearing 26 provided at the bottom of the receiving cylinder 23, and the stirring blade 25 is provided coaxially with the dewatering shaft 27 in the hollow portion of the dewatering shaft 27. And is fixed to the upper end of the washing shaft 29 disposed so as to satisfy the following condition.

The washing shaft 29 is supported by a bearing 28 provided in the hollow portion of the dehydrating shaft 27, and the lower end of the washing shaft 29 is connected to the output side of the speed reduction mechanism 30. A drive motor 32 is attached to a speed reduction mechanism input shaft 31 of the speed reduction mechanism 30.

The drive motor 32 is shaped like a disk, and has a rotor 32b having a magnet mounting portion 32a extending in the height direction on its outer periphery, and a magnet attached to the outer peripheral portion of the magnet mounting portion 32a. And a stator 32c that is provided on the outer peripheral side of the magnet of the rotor 32b and applies a rotating magnetic field to the rotor 32b. The reduction mechanism input shaft 31 of the reduction mechanism 30 is connected to the rotation center of the rotor 32 b of the drive motor 32.

The meshing clutch mechanism 33 comprises a torque transmitting portion for transmitting the torque of the drive motor 32 and a driving portion for fixing or releasing the torque transmitting portion. The rotational force transmitting unit includes a rotor-side meshing clutch tooth portion 33a provided in a space enclosed by the rotor 32b and the magnet mounting portion 32a, a dehydrating shaft 27, and a bearing 26 that supports the dehydrating shaft 27. The rotor-side meshing clutch teeth are fitted into the fixed meshing clutch teeth 33b, the splines 27a provided on the spinning shaft 27, and the splines 27a of the spinning shaft 27 in the recesses formed by recessing the lower periphery of the lower portion 34a toward the center of the shaft. A movable clutch 33c slidable in the thrust direction provided with a tooth portion meshing with the portion 33a and a fixed side meshing clutch tooth portion 33b. Clutch teeth 33b latch 33c is engagement stationary clutch teeth 33a meshing rotor side
And a clutch driving means 33d for controlling so as to mesh with each other.

The operation of the embodiment will be described below. In the agitating washing and rinsing steps, the power supply to the clutch driving means 33d for moving the meshing clutch mechanism 33 is stopped. The clutch driving means 33d meshes the movable clutch 33c with the fixed side meshing clutch teeth 33b, so that the dehydrating shaft 27 cannot rotate. The power of the drive motor 32 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 the rinsing process of the laundry stored in the dewatering tub 24 proceeds.

When the stirring and washing process is completed, the dehydration process is automatically started. In this dehydration process, the water in the dewatering tub 24 is drained, and the clutch driving means 33d for moving the meshing clutch mechanism 33 is energized. The clutch driving means 33d connects the movable clutch 33c to the fixed side meshing clutch teeth 33b.
, And meshes with the rotor-side meshing clutch teeth 33a so that the dehydrating shaft 27 can rotate in synchronization with the rotor 32b. The reduction mechanism input shaft 31 and the dehydrating shaft 27 are connected, and the entire dehydrating tub 24 rotates. The water content of the laundry that has completed the agitation washing and the rinsing process by the rotation of the dewatering tub 24 is squeezed out into the receiving cylinder 23 from a large number of holes provided on the side surface of the dewatering tub 24 by centrifugal force. Thus, the laundry is automatically dehydrated. Thus, the dewatering tank 2
The laundry put in 4 is automatically stirred and washed, rinsed,
This ends the dehydration process.

As described above, according to this embodiment, the washing shaft 2
9. The dehydrating shaft 27 has a coaxial double structure, and the reduction mechanism 30, the meshing clutch mechanism 33, and the drive motor 32 are arranged in this order from the stirring blade 25 side. Since the mechanism is integrated and the center of gravity comes to the center of the receiving cylinder 23, the imbalance caused by the motor not being at the center of the receiving cylinder 23 as in the related art is eliminated, and vibration during dehydration is suppressed. Further, by using the meshing clutch mechanism 33 instead of the spring clutch mechanism, the thickness can be reduced with the same transmission torque. Further, when dehydration is stopped, the electromagnetic braking action of the drive motor 32 can be used, and the braking time can be reduced in combination with the mechanical brake, thereby enabling a large washing capacity. Further, since the drive motor 32 includes the speed reduction mechanism 30 and the meshing clutch mechanism 33, even if the drive motor 32 is increased in size, it does not extend in the axial direction, thereby providing a washing machine that can be made thinner and smaller. Is what you do.

(Embodiment 2) Embodiment 2 of the present invention will be described below with reference to FIG. This embodiment is an embodiment of the invention according to claim 2. In the present embodiment, an intermeshing rotor-side meshing clutch tooth portion 33a provided in a space enclosed by the rotor 32b and the magnet mounting portion 32a and the dehydrating shaft 27 are included, and the bearing 26 that supports the dewatering shaft 27 is provided. A fixed side meshing clutch tooth part 33b and a dewatering shaft 2
7, a thrust direction in which a tooth portion meshing with the rotor-side meshing clutch tooth portion 33a and a tooth portion meshing with the fixed-side meshing clutch tooth portion 33b are provided while being fitted to the spline 27a of the dehydrating shaft 27. Is provided with a movable clutch 33c which is slidable in this order, the speed reduction mechanism 30, the meshing clutch mechanism 33, and the drive motor 32 are arranged in this order from the stirring blade 25 side, and the structure is such that these are on the same axis. By providing the washing machine, a washing machine having a low height and good operability is provided.

(Embodiment 3) Embodiment 3 of the present invention will be described below with reference to FIG. This embodiment is an embodiment of the third aspect of the present invention. In the present embodiment, the dehydrating shaft 27 is included, and the upper case 34b and the lower case 34a each having the bearing 26 that supports the dehydrating shaft 27 are provided. The drive motor 3 is connected to the joint between the upper case 34b and the lower case 34a.
2, the speed reduction mechanism 30, the meshing clutch mechanism 33, and the drive motor 32 are arranged in this order from the stirring blade 25 side even if the drive motor 32 is enlarged, and these are arranged on the same axis. An object of the present invention is to provide a washing machine having a low height and good operability by being efficiently arranged.

(Embodiment 4) Next, Embodiment 4 of the present invention will be described with reference to FIG. This embodiment is an embodiment of the invention according to claim 4. The same components as those shown in FIG. 1 are given the same reference numerals to avoid duplication of detailed description. In the present embodiment, an upper case 34b and a lower case 34a each including a dehydrating shaft 27 and having a bearing 26 that supports the dehydrating shaft 27 are provided.
Bead 34c is formed on the entire periphery of
The thickness of the case can be reduced, and at the same time, water overflowing from the receiving cylinder 23 can be prevented from entering the speed reduction mechanism 30, the meshing clutch mechanism 33, and the drive motor 32. A washing machine is provided.

Fifth Embodiment Next, a fifth embodiment of the present invention will be described with reference to FIG. This embodiment is an embodiment of the invention according to claim 5. The same components as those shown in FIG. 1 are given the same reference numerals to avoid duplication of detailed description. In the present embodiment, an upper case 34b and a lower case 34a each including a dehydrating shaft 27 and having a bearing 26 for supporting the dehydrating shaft 27 are provided.
b and the lower case 34a are made of the same components, so that the components can be shared, and if the structure is deep on one side only, the strength is increased so that it is not deformed by the force of the rotation of the dehydrating shaft 27. However, the present invention provides a washing machine in which the same strength can be used, and only one kind of material is required.

Embodiment 6 Next, Embodiment 6 of the present invention will be described with reference to FIG. This embodiment is an embodiment of the invention according to claim 6. The same components as those shown in FIG. 1 are denoted by the same reference numerals, and redundant description will be avoided. In the present embodiment, an upper case 34b including a dehydrating shaft 27 and having a bearing 26 for supporting the dehydrating shaft 27 is provided.
And a lower case 34a.
2c, the number of parts is reduced, and the stator 32c and the bearing 26 are integrated to increase the mounting accuracy of the rotor 32b, thereby increasing the gap accuracy and enabling the washing efficiency to be increased. Machine.

Embodiment 7 Next, Embodiment 7 of the present invention will be described with reference to FIG. This embodiment is an embodiment of the invention according to claim 7. The same components as those shown in FIG. 1 are denoted by the same reference numerals, and redundant description will be avoided. In this embodiment, the upper case upper part 34 including the dehydrating shaft 27 and having the bearing 26 for supporting the dehydrating shaft 27 is provided.
b and a lower case 34a, and the lower case 34a is composed of a stator 32c. The number of parts is reduced, and the stator 32c and the bearing 26 are integrated to increase the mounting accuracy of the rotor 32b, thereby improving the gap accuracy. It is an object of the present invention to provide a washing machine that can be improved and can increase the motor efficiency.

[0033]

The invention described in claim 1 of the present invention has a double structure in which the washing shaft and the dewatering shaft are coaxial, and the speed reduction mechanism, the meshing clutch mechanism, and the drive motor are arranged on the same axis in this order from the stirring blade side. By arranging, the motor and the mechanism are integrated,
The unbalance of the receiving cylinder is suppressed, the vibration during dehydration is small, and the meshing clutch mechanism can use the electromagnetic brake function of the drive motor at the time of dehydration stop compared to the spring clutch mechanism. It is possible to cope with the shortening of the washing time and the increase of the washing capacity, and there is no generation of abnormal noise due to running out of grease due to aging as in a spring clutch.

Further, since the drive motor includes the speed reduction mechanism and the meshing clutch mechanism, the drive motor does not expand in the axial direction even if the drive motor is increased in size. Accordingly, the present invention realizes a washing machine capable of suppressing a large volume below the main body of the washing machine.

The type of the drive motor is not limited, and is not limited as long as a space can be provided inside the rotor of the drive motor. The form of the meshing clutch is not limited either. The invention described in claim 2 of the present invention is arranged from the stirring blade side in the order of the reduction mechanism, the meshing clutch mechanism, and the drive motor, and these are arranged on the same axis. In a certain structure, a dehydrating shaft is included, and a case having a bearing for supporting the dehydrating shaft is provided.The lower outer periphery of the case is depressed toward the center of the shaft, and a meshing clutch portion is provided in the depressed portion. In addition, the meshing clutch can be made thinner, whereby the drive motor approaches the case, thereby making it possible to make it thinner. Also,
Since the length of the washing-side input shaft can be shortened, a washing machine capable of suppressing a large volume below the main body of the washing machine can be realized.

According to the third aspect of the present invention, a deceleration mechanism is included in a structure in which a speed reduction mechanism, a meshing clutch mechanism, and a drive motor are arranged in this order from the stirring blade side, and these are on the same axis. In addition, a case having a bearing for supporting the dehydrating shaft is provided, and this case is composed of upper and lower two parts, and a drive motor mounting portion is provided at a coupling part of the upper and lower two parts, so that the drive motor is enlarged and driven. Since the portion can be reduced in size without extending in the axial direction, it is possible to realize a washing machine capable of suppressing a large volume below the main body of the washing machine.

According to the invention described in claim 4 of the present invention, the deceleration mechanism, the meshing clutch mechanism, and the drive motor are arranged in this order from the stirring blade side, and the structure in which these are on the same axis includes the dehydrating shaft. In addition, a case having a bearing for supporting the dehydrating shaft is provided. The case is composed of upper and lower two parts, and a bead is provided on the entire periphery of a portion where the upper and lower parts are joined, so that the thickness of the case can be reduced. At the same time, it is possible to prevent water overflowing from the receiving cylinder from entering the speed reduction mechanism, the clutch and the motor due to the beads, thereby realizing a durable washing machine.

According to a fifth aspect of the present invention, a deceleration shaft is included in a structure in which a speed reduction mechanism, a meshing clutch mechanism, and a drive motor are arranged in this order from the stirring blade side, and these are on the same axis. In addition, a case having a bearing that supports the dehydrating shaft is provided, and this case is composed of upper and lower two parts, and is composed of the same upper and lower parts, thereby realizing an inexpensive washing machine that shares parts. It is.

According to the invention described in claim 6 of the present invention, a deceleration mechanism, a meshing clutch mechanism, and a drive motor are arranged in this order from the stirring blade side, and the dehydrating shaft is included in a structure in which these are on the same axis. And a case having a bearing for supporting the dewatering shaft. The case is composed of upper and lower parts, and the upper side of the case is composed of a motor stator. Thus, a washing machine is realized in which gap accuracy is increased by increasing the mounting accuracy of the rotor by integrating the rotor and motor efficiency can be increased.

According to the invention described in claim 7 of the present invention, a deceleration mechanism, a meshing clutch mechanism, and a drive motor are arranged in this order from the stirring blade side, and a dehydrating shaft is included in a structure in which these are on the same axis. In addition, a case having a bearing that supports the dehydrating shaft is provided, the case is composed of upper and lower parts, and the lower part of the case is composed of a motor stator. An object of the present invention is to realize a washing machine in which the accuracy of the gap is increased by increasing the mounting accuracy of the rotor by integrating the bearings, and the motor efficiency can be increased.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an overall configuration of a washing machine according to embodiments 1, 2, and 3 of the present invention.

FIG. 2 is a sectional view illustrating the overall configuration of a washing machine according to a fourth embodiment of the present invention.

FIG. 3 is a sectional view illustrating the overall configuration of a washing machine according to a fifth embodiment of the present invention.

FIG. 4 is a sectional view illustrating the overall configuration of a washing machine according to a sixth embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating an overall configuration of a washing machine according to a seventh embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating the overall configuration of a conventional washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Main body 22 Suspension 23 Receiving cylinder 24 Dehydration tank 25 Stirring blade 26, 28 Bearing 27 Dehydration shaft 27a Spline 29 Washing shaft 30 Reduction mechanism 31 Reduction mechanism input shaft 32 Drive motor 32a Magnet attachment part 32b Rotor 32c Stator 33 Mesh clutch mechanism 33a Rotor side meshing clutch teeth 33b Fixed side meshing clutch teeth 33c Movable clutch 33d Clutch drive means 34a Lower case 34b Upper case 34c Bead

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B155 AA10 BA03 BA04 BB16 BB19 CA06 CB06 HB02 HB03 HB09 HB15 HB17 HB19 HB29 HB33 MA01 MA02

Claims (7)

[Claims] 1. A dewatering shaft for rotating a dewatering tub, a washing shaft for rotating a stirring blade disposed in the dewatering tub and disposed coaxially with the dewatering shaft, the dewatering shaft and the washing shaft. A drive motor for rotating the drive motor, a reduction mechanism for reducing the rotation of the drive motor to rotate the washing shaft, and a meshing clutch mechanism for transmitting or not transmitting the rotation of the drive motor to the dehydrating shaft, A reduction mechanism and the drive motor are coaxially arranged, and the meshing clutch mechanism includes a rotational force transmitting unit that transmits rotation of the drive motor to a dehydrating shaft, and a drive that contacts or separates from the rotational force transmission unit. A washing machine comprising: a portion of the rotational force transmitting portion formed on a rotor of the drive motor; and the speed reduction mechanism and the meshing clutch included by the drive motor. 2. A case including a dewatering shaft and having a bearing for supporting the dewatering shaft, wherein a lower outer periphery of the case is depressed toward the center of the shaft, and a clutch mechanism is provided in the depressed portion. The washing machine as described. 3. A case including a dehydrating shaft and having a bearing for supporting the dehydrating shaft, the case being composed of upper and lower two parts, and a drive motor mounting part provided at a joint between the upper and lower two parts. The washing machine according to claim 1. 4. A case including a dewatering shaft and having a bearing for supporting the dewatering shaft, the case being composed of two upper and lower parts, and a bead provided on the entire outer periphery of a joint portion of the upper and lower two parts. The washing machine according to any one of claims 1 to 3. 5. A case including a dewatering shaft and a bearing having a bearing for supporting the dewatering shaft, wherein the case is composed of two upper and lower parts, and is composed of the same upper and lower parts. 5. The washing machine according to any one of the above items 4. 6. A case including a dewatering shaft and a bearing having a bearing for supporting the dewatering shaft, the case being composed of upper and lower parts, and an upper part being composed of a motor. Or the washing machine according to any one of 2. 7. A case including a dewatering shaft and a bearing having a bearing for supporting the dewatering shaft, the case being composed of two parts, upper and lower, and a lower part being composed of a motor. 3. The washing machine according to any one of 1 and 2.