JPH11342290A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts, balance a water receiver tank easily, and form the shape that takes material for a lever with less waste to reduce the cost in a washing machine for washing, rinsing and dehydrating clothes. SOLUTION: In the washing machine, a hollow dehydrating shaft 32 and a washing shaft 34 which is set on the same shaft to the dehydrating shaft 32 are ratated with a motor 37 and a washing and dehydrating tank is rotated with the dehydrating shaft 32. And the motor 37 is decelerated with a reducing mechanism 35 to rotate an agitation blade set on the washing and dehydrating tank with the washing shaft 34 and the rotation of the motor 37 is changed to either of the hollow dehydrating shaft 32 or the washing shaft 34 with the clutch mechanism 39 and the clutch mechanism 39 is driven with the clutch driving means 41. The reducing mechanism 35 and the motor 37 are set on the same shaft and the part of the clutch driving means 41 comes into contact with the brake lever rotating shaft 47 at the proximity to a clutch rotating shaft 45.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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 is shown in FIGS.
It was configured as shown in FIG. Hereinafter, the configuration will be described.

As shown in FIG. 5, a washing machine main body 1 has a water receiving tub 3 supported by a suspension 2 therein, and a washing and dewatering tub 4 is rotatably provided in the water receiving tub 3.
The washing and dewatering tub 4 has an open top so that laundry can be put in from the top. Further, a stirring blade 5 is rotatably provided at the bottom, and has a large number of holes on the side surface.

[0006] As shown in FIG. 6, the washing and dewatering tub 4 is fixed to a dewatering shaft 7 supported by a bearing 6 provided on the bottom surface of the water receiving tub 3. Is fixed to a washing shaft 9 supported by a bearing 8 inside the inside. The washing shaft 9 is connected to a speed reduction mechanism 10, and a pulley 12 is attached to the speed reduction mechanism input shaft 11.

[0005] The mounting portion of the pulley 12 of the speed reduction mechanism input shaft 11 has four cut-out surfaces, and the mounting hole of the pulley 12 is formed in a shape that fits into the hole, thereby transmitting the rotational force of the pulley 12. The pulley 12 is connected to a motor 14 via a belt 13. Further, the speed reduction mechanism input shaft 11 has a clutch mechanism 15 for switching the rotation of the motor 14 to the washing shaft 9 or the dehydrating shaft 7 and transmitting the rotation.

[0006] The clutch mechanism 15 includes a speed reduction mechanism input shaft 11.
A clutch boss 16 having a hole shape to be fitted to a portion obtained by cutting the four surfaces provided in the clutch spring 17, a clutch spring 17, and a release sleeve 18 for transmitting the clutch switching force of the clutch driving means 19 to the clutch spring 17. doing. One of the clutch springs 17 is wound around the clutch boss 16 and the other is wound around the dehydrating shaft 7.

As shown in FIG. 7, the clutch driving means 19 includes a clutch claw 20, a clutch lever 21, a clutch spring 22, a clutch rotating shaft 23, and a gear motor for rotating the clutch lever 21, for example. It comprises clutch switching means (not shown). A stopper portion 25 is formed on a part of the clutch lever 21 so as to contact the brake lever rotation shaft 24.

The operation of the above configuration will be described. The laundry is put into the washing / dewatering tub 4 and the washing is started. First, a predetermined amount of water is supplied from a water supply port (not shown). When a predetermined amount of water is obtained, the washing process is started. At this time, the clutch lever 21 of the clutch driving means 19
Is held by the clutch spring 22 so that the stopper portion 25 contacts the brake lever rotation shaft 24.
The clutch pawl 20 engages with the release sleeve 18 and applies a force in a direction to loosen the clutch spring 17.

As a result, the clutch spring 17
And the clutch boss 16 slips, and the torque of the motor 14 transmitted via the belt 13 causes the pulley 12 to rotate the speed reduction mechanism input shaft 11. This torque is
The washing shaft 9 is rotated via the speed reduction mechanism 10, and the stirring blade 5 fixed to the washing shaft 9 is further rotated. The laundry is washed by the rotation of the stirring blade 5. Of course, at this time, the motor 14 is rotating left and right for a predetermined time period.

When the washing is completed, the water in the washing and dewatering tub 4 is drained to perform dehydration. At this time, the clutch lever 21 is rotated by the clutch switching means (not shown). As the clutch lever 21 rotates, the clutch pawl 2
0 comes off the release sleeve 18, and the clutch spring 17 winds around the clutch boss 16.

When the motor 14 is rotated in this state,
The torque transmitted to the pulley 12 via the belt 13 rotates the deceleration mechanism input shaft 11 to rotate the dewatering shaft 7 via the clutch boss 16 and the clutch spring 17. Further, the washing and dewatering tub 4 fixed to the dewatering shaft 7 is rotated. The laundry is dehydrated by rotating the washing / dewatering tub 4. At this time, the water from the laundry is drained from a number of holes provided on the side surface of the washing and dewatering tub 4.

As described above, the rotation of the stirring blade 5 and the washing / dewatering tub 4 can be switched by the clutch mechanism 15 to perform washing, rinsing, and dewatering, thereby performing washing.

[0013]

In such a conventional configuration, since the motor 14 and the drive mechanism are connected via the belt 13, the number of parts is increased and the cost is high. In addition, it is difficult to balance the water receiving tub 3 because the motor 14 is installed at a position off the center of rotation of the washing and dewatering tub 4. Further, since the stopper portion 25 is provided in the clutch lever 21 in a convex shape, waste is likely to occur in molding material.

The present invention solves the above-mentioned conventional problems, and reduces the number of parts, facilitates the balance of the water receiving tank, and reduces the cost by reducing the amount of useless clutch lever material. The purpose is.

[0015]

According to the present invention, in order to achieve the above object, a hollow dewatering shaft and a washing shaft arranged coaxially with the dewatering shaft are rotated by a motor, and the washing and drying operation is performed by the dewatering shaft. 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. The clutch mechanism is configured to be driven by clutch driving means, the speed reduction mechanism and the motor are arranged on the same axis, and a part of the clutch driving means is brought into contact with a stopper member in the vicinity of its rotating part. It is composed.

As a result, it is possible to reduce the number of parts, suppress occurrence of unbalance during dehydration, and reduce the cost by reducing the amount of useless material for removing the clutch lever.

[0017]

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. A clutch mechanism for switching to one of the washing shafts, and a clutch driving means for driving the clutch mechanism, wherein the deceleration mechanism and the motor are arranged on the same axis, and a part of the clutch driving means is provided. It is configured to abut against the stopper member in the vicinity of the rotating part, and since the speed reduction mechanism and the motor are located on the same axis, the position of the center of gravity of the washing and dewatering tub, the water receiving tub and the rotation of the washing and dewatering tub are rotated. One with the center And the occurrence of unbalance during dehydration can be suppressed, and a belt is not required, so that the number of parts can be reduced and assemblability can be improved. The cost can be reduced as the shape is small.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided a case including a speed reduction mechanism and the like.
A stopper member is provided at a position where it comes into contact with the rotating portion of the clutch driving means. With a simple configuration, the reliability can be improved, and the unit can be compactly arranged in the axial direction and safety can be improved. .

[0019]

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 26 is provided with a water receiving tank 28 suspended by a suspension 27 so as to prevent dehydration vibration therein. The washing and dewatering tub 29 is arranged rotatably in
A stirring blade 30 for stirring the laundry is rotatably arranged at the inner bottom of the washing / dewatering tub 29.

The washing and dewatering tub 29 is, as shown in FIG.
The stirring blade 30 is fixed to the upper end of a dehydrating shaft 32 that is supported by a bearing 31 provided at the bottom of the water receiving tank 28.
It is disposed coaxially with the dewatering shaft 32 in the hollow portion of the dewatering shaft 32, and is fixed to the upper end of a washing shaft 34 supported by a bearing 33 provided in the hollow portion of the dewatering shaft 32. The lower end of the washing shaft 34 is connected to the output side of the speed reduction mechanism 35.

The motor bracket 36 is formed in a cup shape and is mounted on the speed reduction mechanism 35 with the opening downward, and a stator 37b for applying a rotating magnetic field to the rotor 37a is press-fitted into the motor bracket 36, and the rotor 37b is inserted into the stator 37b. The motor 37 is constituted by opposing the motor 37a and the speed reduction mechanism 3
5 and the motor 37 are arranged on the same axis,
The motor 37 is attached to the input shaft 38 of the speed reduction mechanism.

The clutch mechanism 39 switches the rotation of the motor 37 between the dehydrating shaft 32 and the washing shaft 34. A clutch spring 40 is provided in a space provided inside the rotor 37a, and the clutch spring 40 is driven externally. Clutch driving means 41 is provided.

The clutch driving means 41 includes a clutch claw 42
, A clutch lever 43, a clutch spring 44, a clutch rotating shaft 45, and clutch switching means (not shown) such as a geared motor for rotating the clutch lever 43.

The clutch lever 43 rotatably supports a U-shaped portion 43a by a clutch rotating shaft (rotating portion) 45, extends the U-shaped portion 43a to form a stopper portion 46, and forms a stopper portion 46. 46 is configured to abut a brake lever rotation shaft (stopper member) 47.

The operation of the above configuration will be described. Washing,
In the rinsing stroke, the clutch driving means 29b of the clutch mechanism 29 releases the clutch spring 29a, and the dehydrating shaft 2
2 cannot transmit torque. The power of the motor 27 is only transmitted to the stirring blade 20 via the washing shaft 24, and gives a mechanical force to the laundry. Thus, the washing and rinsing of the laundry housed in the washing / dewatering tub 29 progresses.

When the washing process is completed, a dehydration process is started. In this dehydration process, water in the washing and dewatering tub 29 is drained,
The clutch driving means 29b of the clutch mechanism 29 drives the clutch spring 29a so that a rotational force can be transmitted to the dehydrating shaft 22. As for the power of the motor 27, the speed reduction mechanism input shaft 28 and the dehydrating shaft 22 are connected, and the washing and dehydrating tub 29 rotates.

As the washing and dewatering tub 29 rotates, the water content of the laundry, which has been washed and rinsed, is condensed into the water receiving tub 28 from a large number of holes provided on the side of the washing and dewatering tub 29 by centrifugal force. Will be issued. Thus, the laundry is automatically dehydrated. In this way, the laundry put into the washing and dewatering tub 29 automatically ends the washing, rinsing, and dehydrating steps.

As described above, according to the present embodiment, the washing shaft 3
4. The dehydrating shaft 32 has a double structure in which the dehydrating shaft 32 is coaxial. The deceleration mechanism 35, the clutch mechanism 39, and the motor 37 are arranged in this order from the stirring blade 30 side, and since these are on the same axis, the motor 37 and the deceleration mechanism 35 are arranged. And the center of gravity comes to the center of the water receiving tank 38, so that the imbalance caused by the motor 37 not being at the center of the water receiving tank 28 as in the related art is eliminated, and vibration during dehydration can be suppressed.

The speed reduction mechanism 3 is directly driven by the motor 37.
5. Since the dehydrating shaft 32 is rotated, a drive mechanism unit which is compactly arranged in the axial direction can be formed.
Since a conventional belt is not required, the number of parts can be reduced, and assemblability can be improved.

Further, the clutch lever 43 has a stopper portion 46 formed by extending a U-shaped portion 43a rotatably supported by the clutch rotating shaft 45, and the stopper portion 46 is brought into contact with a brake lever rotating shaft 47. The stopper portion 46 can be formed by extending in the longitudinal direction of the clutch lever 43 because it is configured to be in contact with the clutch lever 43. The stopper portion 46 can be formed in a shape with little waste in removing the material of the clutch lever 43, and cost is reduced. Can be reduced.

(Embodiment 2) As shown in FIGS. 3 and 4, the case 48 includes the speed reduction mechanism 35 and the like.
In this case 48, a stopper screw (stopper member) 50 is provided at a position where the clutch lever 43 of the clutch drive means 41 comes into contact with a stopper portion 49 of the clutch lever 43 when the clutch lever 43 rotates. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. In the cleaning process, the clutch pawl 42 is at the position a and is engaged with the release sleeve 51. In the dehydration process, the clutch pawl 42 is moved by the clutch switching means (not shown) to b
Move to the position. When the clutch claw 42 is rotated to a predetermined position b or more due to some abnormality, for example, an abnormality of the clutch switching means (not shown), the stopper portion 49 of the clutch lever 43 comes into contact with the stopper screw 50, and the clutch Claw 42 and rotor 3 constituting motor 37
7a does not interfere.

As described above, according to the present embodiment, the speed reduction mechanism 3
When the clutch lever 43 of the clutch driving means 41 is rotated into the case 48 containing
Since the stopper screw 50 is provided at a position where the stopper screw 3 comes into contact, the reliability can be improved by a simple configuration, and the stopper screw 50 can be compactly arranged in the axial direction and safety can be improved.

[0035]

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 rotation to one of a dehydrating shaft and a washing shaft; and a clutch driving means for driving the clutch mechanism. The reduction gear mechanism and the motor are arranged on the same axis, and the clutch driving means is provided. Of the washing and dewatering tub, the center of gravity of the water receiving tub and the like, and the rotation center of the washing and dewatering tub can be made to coincide with each other. Ann in The occurrence of lances can be suppressed, and the need for a belt is eliminated, so that the number of parts can be reduced and assemblability can be improved. In addition, the cost is reduced by reducing the amount of material used for clutch lever material removal. Can be.

According to the second aspect of the present invention, there is provided a case including a speed reduction mechanism and the like, and the case is provided at a position where the clutch driving means is brought into contact with the rotating portion of the clutch driving means when the clutch driving means rotates. Since the stopper member is provided, the reliability can be improved with a simple configuration, and at the same time, the unit can be compactly arranged in the axial direction and the safety 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 partially cutaway plan view of a main part of a washing machine according to a second embodiment of the present invention;

FIG. 4 is an essential part plan view showing an operation state of the washing machine;

FIG. 5 is a sectional view of a conventional washing machine.

FIG. 6 is an enlarged sectional view of a main part of the washing machine.

FIG. 7 is a plan view of a main part of the washing machine with a part cut away.

[Explanation of symbols]

 29 Washing and dewatering tank 30 Stirrer blade 32 Dehydrating shaft 34 Washing shaft 35 Reduction mechanism 39 Clutch mechanism 37 Motor 41 Clutch driving means 45 Clutch rotating shaft (rotating part) 47 Brake lever rotating shaft (Stopper member)

Claims (2)

[Claims] 1. A hollow dehydrating 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 dehydrating shaft, and A motor for rotating a shaft and the washing shaft, a reduction mechanism for reducing the rotation of the motor to rotate the washing shaft, a clutch mechanism for switching the rotation of the motor to one of a dehydrating shaft and a washing shaft, and the clutch A clutch driving means for driving a mechanism, wherein the speed reduction mechanism and the motor are arranged on the same axis, and a part of the clutch driving means is brought into contact with a stopper member in the vicinity of a rotating portion thereof. Washing machine. 2. A washing machine according to claim 1, further comprising a case including a speed reduction mechanism, wherein a stopper member is provided at a position in contact with a rotating portion of the clutch driving means when the clutch driving means rotates. Machine.