JP2649104B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration structure and a cleaning method for a fully automatic washing machine and the like.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional fully automatic washing machine. In a fully automatic washing machine, a driving source is a motor 1 for washing and spinning, and at the time of washing, its driving force is a motor pulley 2, a V-belt 3, a driving pulley 4, a gear shaft 5, a reduction gear 6, a pulsator
It is transmitted in the order of the data shaft 7 rotates the Paruse motor 8, to wash the laundry.

The washing and dewatering tub 9 is fixedly connected to a dewatering flange 10, a dewatering shaft 11, a wheel cover 12, a brake wheel 13, and a wheel shaft 14. Since the washing and dewatering tub 9 is brake-fixed by a brake band 15, However, it does not move in conjunction with the laundry.

On the other hand, at the time of dehydration, the washing and dehydrating motor 1 is used.
Is transmitted to the motor pulley 2, the V-belt 3, the drive pulley 4, the wheel shaft 14, the brake wheel 13, the wheel lid 12, the dewatering shaft 11, the dewatering flange 10, and the washing dewatering tub 9 in this order. At this time, of course, brake band 1
5 is released, and the washing and dewatering tub 9 and the pulsator 8
Rotates together to perform dehydration.

Next, at the time of rinsing, transmission of driving force is the same as that of washing, but water is added to this. That is, water from the outside is supplied from the water supply valve 16 and the water supply hose 17 to the washing and dewatering tub 9.
Water is supplied inside, overflow port 18, rinse hose 1
9. Performs a rinsing function while being discharged to the outside via the drain hose 20.

The washing and dewatering tub 9 driven as described above is rotatably mounted in a water tub 21, and a driving mechanism such as the motor 1 is mounted on the bottom of the water tub 21.

The water tank assembly on which most of the internal functional parts including the washing / dewatering tub 9 are mounted has a vibration isolator comprising a support spring 22, a spring receiver 23, a slider 24, a support rod 25, and a support rod receiver 26. It is suspended above the four corners of the outer tub 27 by a mechanism.

In the drawing, reference numeral 28 denotes a clutch for switching between washing and dehydration, 29 a heater, 30 a heater receiver, and 31 a lid.

[0009]

In the prior art described above, a water tank assembly in which most of the internal functional parts are mounted with the washing and dewatering tub 9 at the top, that is, a large part of the product weight is the outer tub 2
7, the position of the center of gravity of support is high, and the lateral sway of the outer tub 27 is large. In addition, there is a problem in the strength of the four corners of the outer tub 27, and it is necessary to take measures such as increasing the thickness of the outer tub 27 and using a vibration damping material. The degree of freedom is small and cost reduction cannot be achieved.

Further, since the washing and dewatering motor 1 is a four-pole motor, a drive transmission component such as a reduction gear,
In addition, a transmission mechanism for the parts of the washing / dewatering switching clutch is required, and as a result, the number of parts is increased, and there is a problem in the reliability and quality of the parts.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a washing machine capable of reducing the vibration of the outer tub by increasing the vibration damping effect in the outer tub.

It is another object of the present invention to provide a washing machine capable of simplifying a drive mechanism to reduce the number of parts and improving the reliability of a product.

[0013]

As shown in FIG. 1, the present invention provides a water tank 41 in which a washing and dewatering tank 40 is rotatably mounted, and an outer tank 42 in which the lower part is sealed and stored. The supported portion 43 is provided on the bottom of the water tank 41.
And a support portion 44 is provided on the bottom surface of the outer tub 42 in opposition thereto.
Provided, the supported portion 43 contacts the support portion 44,
The water tank 41 receives buoyancy from the water stored in the outer tank 42.
The Rukoto, in which the water tank 41 is supported on the outer tank 42.

According to a second aspect of the present invention, there is provided a water tank 41.
A pulsator 47 is fixed via a pulsator shaft 46, a baffle 48 is formed in the washing and dewatering tub 40, and the washing and dewatering tub 40 is rotatably supported around the pulsator shaft 46.

According to a third aspect of the present invention, a water tank 41 is provided.
A motor 49 for driving the rotation of the washing and dewatering tub arranged at the top of
A drive transmission unit 50 for rotating the washing / dewatering tub 40 by the driving force of the motor 49 directly using the side wall of the washing / dewatering tub 40 as a driven force transmission surface is provided.

[0016]

In the above means for solving the above problems, at the time of washing, water is poured into the water tank 41 to a water level corresponding to the amount of the laundry. Then, the motor 49 is driven to directly rotate the washing and dewatering tub 40 by the drive transmission unit 50.

When the motor 49 repeats normal rotation and reverse rotation, the baffle 48 generates a water flow, and the pulsator 47
The laundry is stirred by being hit with a water stream, and the laundry is swung and washed.

At the time of spin-drying, the motor 49 is rotated at a high speed, and the spin-drying tub 40 is spun at high speed to spin-dry the laundry.

During operation, the water tub 41 is floated in the water stored in the outer tub 42, whereby the water tub 41 receives buoyancy, and the vibration of the washing and dewatering tub 40 is attenuated by the water.

[0020]

An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is an overall configuration diagram of a fully automatic washing machine showing one embodiment of the present invention.

The fully automatic washing machine according to the present embodiment, as shown in FIG.
A water tub 41 in which a washing / dewatering tub 40 is rotatably mounted, and an outer tub 42 in which a lower portion is hermetically sealed to store water.
The water tank 41 is floated in the water 2 and a supported part 43 provided at the center of the bottom of the water tank 41 and a support part 44 provided at the center of the bottom of the outer tank 42 in opposition thereto.
The water tank 41 is supported by the outer tank 42 by a lateral shake preventing elastic body 45 provided between the side surface of the outer tank 42 and the side surface of the outer tank 42.

A pulsator shaft 46 is provided in the water tank 41.
A pulsator 47 is fixed via the fin, a baffle 48 is formed in the washing and dewatering tub 40, and the washing and dewatering tub 40 is rotatably supported around the pulsator shaft 46.

On the upper part of the water tub 41, a motor 49 for rotationally driving the washing and dewatering tub and the washing and dewatering tub 4 directly driven by the motor 49 with the side wall of the washing and dewatering tub 40 as a driven force transmitting surface.
0 is provided.

The outer tub 42 has a box shape with an open top surface, a convex portion 51 having a raised portion formed at the center of the bottom surface, and a slash-shaped support concave portion 44a formed at the center thereof. An annular water storage section 52 in which the periphery of 51 is lowered one step
It is said. Further, legs 53 are integrally formed on the bottom surface, and the side and bottom surfaces of the outer tub 42 are integrally molded to be sealed. On the back side of the bottom surface, a drain port 54 is formed at a position higher than the convex portion 51, and a drain pipe 55 is formed.
Is connected.

Further, the upper portion of outer tub 42, top plate 57 having an opening 56 is covered state, the lid 58 for opening and closing the opening 5 6 on the upper surface plate 57 is mounted.

The water tank 41 has a downwardly concave chevron-shaped recess 59 formed at the center of the bottom surface thereof, and a hemispherical projection 43a formed at the tip thereof. An outlet 60 communicating with the water storage section 52 is formed on the back side of the bottom surface, and a drain valve 61 is interposed therein.

The projection 43a of the water tank 41 is the supported part 43, the support recess 44a of the outer tank 42 is the support part 44, the projection 43a is fitted into the support recess 44a, and the water tank 41 is the water storage part. The water tank 41 is supported by the outer tank 42 by receiving buoyancy from the water stored in the tank 52.

The elastic body 45 made of a tension spring is abutted on the upper portion of the side surface of the water tank 41 at a plurality of places between the outer tank 42 and the water tank 41, and the water tank 41 is supported upright with respect to the outer tank 42.

The pulsator 47 has a pulsator shaft 46.
The pulsator shaft 46 is fixed to the
Pulsator shaft fixing seat 6 screwed to the bottom of water tank 41
It is fixed to 2.

The washing and dewatering tub 40 has a pulsator insertion hole 63 formed in the center of the bottom surface thereof, and a washing and dewatering tub flange 64 is screwed to the periphery of the hole 63. Are passed through the bearing 65. Further, a brake body 66 is mounted on the pulsator shaft fixing seat 62, and the rotation of the washing / dewatering tub 40 is stopped by bringing the brake body 66 into contact with the washing / dewatering tub flange 64.

A balancer 67 in which a fluid is sealed is provided above the outer surface of the washing and dewatering tub 40, and a balancer cover 68 is fused to the balancer 67.

The baffle 48 is a plurality of ribs projecting from the inner side surface of the washing and dewatering tub 40 to the edge of the hole 63 on the bottom surface. A large number of small holes for drainage are formed between each baffle 48.

The motor 49 is composed of a commutator motor of a non-shift type, and is fixed to the upper portion on the back side of the side surface of the water tank 41. A rubber motor roller 70 is fixed to a lower portion of the motor shaft 69, and the motor roller 70 is in sliding contact with a side surface of the balancer cover 68 of the washing and dewatering tub 40. The drive transmission unit 50 is configured.

In the figure, 71 is an overflow port, 7
2 is a water supply valve and 73 is a water supply hose.

In the above configuration, at the time of washing, the water supply valve 72 is first opened and water is poured into the water tank 41. At the initial stage of water injection, the drain valve 61 is opened, and water is stored in the water storage section 52 of the outer tank 42 up to the same level as the drain port 54. Then, water is poured into the water tank 41 to a water level corresponding to the amount of the laundry.

Next, when the motor 49 is driven, the balancer cover 68 of the washing and dewatering tub 40 rotates with the rotation of the motor roller 70, and the washing and dewatering tub 40 is rotated by the pulsator shaft 4.
Rotate around 6.

When the motor 49 repeats normal rotation and reverse rotation, the baffle 48 generates a water flow, and the pulsator 47
The laundry is stirred by being hit with a water stream, and the laundry is swung and washed.

When the washing is completed, the motor 49 is stopped, and the rotation of the washing / dewatering tub 40 is stopped by the brake body 66. Then, the drain valve 61 is opened, and the water overflowing from the water storage section 52 is drained from the drain port 54.

At the time of rinsing, the motor 49 is driven to rotate the washing / dewatering tub 40, and water is poured to a water level reaching the overflow port 71 of the water tub 41, and the water is dropped from the overflow port 71 and drained from the drain port 54. You.

At the time of dehydration, with the drain valve 61 opened,
The rotation speed of the motor 49 is increased and the washing and dewatering tub 40 is rotated.
Is rotated at a high speed to dehydrate the laundry.

During operation of the fully automatic washing machine, the water tub 41 is
The water tub 41 receives buoyancy by being floated in the water stored in the water tank 2, and the vibration of the washing and dewatering tub 40 is attenuated by water having characteristics different from those of the conventional damping body. The horizontal vibration is attenuated by the elastic body 45.

As described above, the vibration damping effect is enhanced, and the vibration of the outer tank 42 can be reduced. In addition, water tank 41
By lowering the supporting position of the bottom of the outer tub 42 and storing water in the lower portion of the outer tub 42, the center of gravity can be lowered, the stability with the hem can be increased, and the outer tub 42 can be made thinner, etc. Outer tub 4
2 is a cost reduction.

Further, by rotating the washing and dewatering tub 40 while fixing the pulsator 47, the laundry can be swung and washed, so that the laundry can be washed evenly. In addition, it is possible to prevent the laundry from getting entangled as compared with the conventional rotating pulsator 47.

Also, by directly driving the washing and dewatering tub 40 by the motor 49 via the drive transmission unit 50 and electrically changing the speed, the parts can be compared with a mechanical speed change method using a reduction gear, a washing and dewatering switching clutch or the like. By reducing the number of parts and the number of parts, it is possible to improve product reliability and reduce costs.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention.

For example, as the drive transmission unit 50, a pulley may be fixed to a motor shaft, and a belt may be wound around the outer surface of the washing and dewatering tub 40 to drive the belt.

Further, the support portion 44 of the outer tub 42 may be convex upward, and the supported portion 43 of the water tub 41 may be concave upward.

[0048]

As it is clear from the description above, according to the present invention, according to the present invention according to claim 1, a water tank where the laundry drying tub rotatably furnished, is floated on the outer tank bottom is water is sealed floating
Since the bottom surface of the water tub is in contact with and supported by the bottom surface of the outer tub under the force, the vibration of the washing and dewatering tub is damped by the water, and the vibration of the outer tub can be reduced. In addition, since the supporting position is lowered, the center of gravity of the washing machine is lowered, the stability with the hem can be increased, the thickness of the outer tub can be reduced, and the cost of the outer tub can be reduced.

According to the second aspect, the pulsator is fixed to the water tub via the pulsator shaft, the baffle is formed in the washing and dewatering tub, and the washing and dewatering tub is rotatably supported around the pulsator shaft. Can be washed by shaking, and can be washed evenly. Moreover, it is possible to prevent the laundry from getting entangled as compared with the conventional pulsator that rotates the pulsator.

According to the third aspect of the present invention, the number of parts can be reduced by directly driving the washing and dewatering tub by the motor via the drive transmission unit, as compared with a mechanical speed change system using a speed reducer, a washing and dewatering switching clutch, and the like. By reducing the number of parts, it is possible to improve product reliability and reduce costs.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a fully automatic washing machine showing one embodiment of the present invention.

FIG. 2 is an overall configuration diagram of a conventional fully automatic washing machine.

[Explanation of symbols]

 40 Washing / dewatering tub 41 Water tub 42 Outer tub 43 Supported part 44 Supporting part 45 Elastic body 46 Pulsator shaft 47 Pulsator 48 Bath full 49 Motor 50 Drive transmission part

Claims (3)

(57) [Claims] 1. A consists washing a water tub a dehydration tub and rotatably furnished, the outer tank bottom is water is sealed, the
A supported portion is provided on the bottom surface of the water tank, and a supporting portion is provided on the bottom surface of the outer tank in opposition to the supported portion, and the supported portion contacts the supporting portion.
Touching, and the water tank receives buoyancy from the water stored in the outer tank.
The Rukoto, washing machine, characterized in that the water tank is supported on the outer tank. 2. The washing machine according to claim 1, wherein the pulsator is fixed to the water tub via a pulsator shaft, a baffle is formed in the washing and dewatering tub, and the washing and dewatering tub is rotatably supported around the pulsator shaft. A washing machine characterized by the following. 3. The washing machine according to claim 1, wherein the washing and dewatering tub rotating drive motor disposed at the upper part of the water tub and the washing and dewatering tub are driven directly by the driving force of the motor using the side wall of the washing and dewatering tub as a driven force transmitting surface. A washing machine provided with a drive transmission unit for rotating a water tub.