JPH05111596A - Washing machine - Google Patents

Abstract

PURPOSE:To reduce components of a reduction gear, etc., by placing a water trough afloat on water, damping vibration with water, and driving a washing/ spin-drying trough directly with a motor. CONSTITUTION:Water is stored in a water reserve 52 of an outer trough 42. A projection 43a on a water trough 41 is fitted in a supporting recess 44a in the outer trough 42 to support the water trough 41, which in this condition, is put afloat on water. The sides of this water trough 41 are supported by resilient members. A pulsator 47 is fixed to the water trough 41 through a pulsator shaft 46. A washing/spin-drying trough 40 is supported rotatably by the pulsator shaft 46. A motor 49 is fixed to the upper part of the water trough 41, and a motor roller 70 is fixed to the motor shaft 69. The motor roller 70 is contacted with a balancer cover 68 of the washing/spin-drying trough 40, which is thus rotated. A resistance body 41a is furnished at the periphery of the bottom of the water trough 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration isolation structure and a cleaning system for a fully automatic washing machine or the like.

[0002]

2. Description of the Related Art A conventional fully automatic washing machine is shown in FIG. In the fully automatic washing machine, the drive source is the washing / dewatering motor 1, and at the time of washing, the driving force is the motor pulley 2, the V belt 3, the drive pulley 4, the gear shaft 5, the reduction gear 6, and the pulsator shaft 7 in this order. Transmitted, rotate the pulsator 8,
Wash the laundry.

The washing / dehydrating tub 9 is fixedly connected to the dewatering flange 10, the dewatering tub 11, the wheel lid 12, the brake wheel 13 and the wheel shaft 14, and the washing / dehydrating tub 9 is braked and fixed by the brake band 15. , Will not be put out in conjunction with the laundry.

On the other hand, at the time of spin-drying, the washing and spin-drying motor 1
From 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 dehydration shaft 11, the dehydration flange 10, and the washing and dewatering tub 9 in this order. At this time, of course, brake band 1
5 is unlocked downward, and the washing / dehydrating tank 9 and the pulsator 8 rotate integrally to perform dewatering.

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

The washing / dehydrating tub 9 driven as described above is rotatably mounted in the water tub 21, and the drive mechanism such as the motor 1 is attached to the bottom of the water tub 21.

The water tank assembly having most of the internal functional parts including the washing / dehydrating tank 9 is constructed with 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 tank 27 by a mechanism.

In the figure, 28 is a washing / dehydration switching clutch, 29 is a heater, 30 is a heater receiver, and 31 is a lid.

[0009]

In the prior art described above, the water tank assembly having most of the internal functional parts with the washing and dewatering tank 9 at the top, that is, most of the product weight is the outer tank 2
Since it is suspended above the four corners of 7, the center of gravity of the support is high, and the outer tank 27 rolls greatly. In addition, there is a problem in strength of the four corners of the outer tub 27, and it is necessary to increase the wall thickness of the outer tub 27 or use a damping material. The degree of freedom is small and it is not possible to reduce costs.

Further, since the washing / dewatering motor 1 is a four-pole motor, in order to achieve a predetermined dewatering and pulsator rotation speed, a drive transmission component such as a reduction gear having a double shaft structure,
In addition, a gear change mechanism such as parts for the washing / dehydration switching clutch part is required, resulting in an increase in the number of parts and problems in reliability and quality of the parts.

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 enhancing the vibration damping effect in the outer tub.

Another object of the present invention is to provide a washing machine in which the drive mechanism is simplified to reduce the number of parts and the product reliability can be improved.

[0013]

Means for Solving the Problems As means for solving the above problems, the present invention comprises a water tank containing a washing and dehydrating tank, and an outer tank in which a lower part of the water tank is sealed and water is stored. The washing / dehydrating tub rotation driving motor arranged on the upper part of the water tub and the drive transmitting unit for rotating the washing / dehydrating tub directly by the driving force of the motor with the side wall of the washing / dehydrating tub as the driven force transmitting surface are provided. The water tank is floated in the water, a supported portion is provided in the center of the bottom surface of the water tank, a support portion is provided on the bottom surface of the outer tank opposite to the supported portion, and a resistor is provided on the outer periphery of the bottom surface of the water tank.

[0014]

In the above means for solving the problem, at the time of washing, water is poured into the water tank 41 to a water level according to the amount of the article to be washed. Then, the motor 49 is driven and the drive transmission unit 50 directly rotates the washing / dehydrating tub 40.

At the time of spin-drying, the motor 49 is rotated at a higher speed to spin the washing / spinning tub 40 at high speed to spin off the laundry.

During operation, the water tank 41 is floated in the water stored in the outer tank 42, so that the water tank 41 is subjected to buoyancy, and the resistor 41a is provided on the outer peripheral portion of the bottom surface of the water tank. The vibration of the water tank 40 is slowed down by the water.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 an embodiment of the present invention.

The fully automatic washing machine of this embodiment is as shown in the drawing.
The washing / dehydrating tub 40 includes a water tub 41 rotatably mounted therein, and an outer tub 42 whose lower part is sealed and stores water.
The water tank 41 is floated in the water 2 and the supported portion 43 provided at the center of the bottom surface of the water tank 41 and the support portion 44 provided at the center of the bottom surface of the outer tank 42 facing the supported portion 43, and the water tank 41.
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.

The pulsator shaft 46 is attached to the water tank 41.
The pulsator 47 is fixed via the above, the baffle 48 is formed in the washing / dehydrating tub 40, and the washing / dehydrating tub 40 is rotatably supported around the pulsator shaft 46.

A washing / dehydrating tub rotation driving motor 49 is provided above the water tub 41, and the washing / dehydrating tub 4 is directly driven by the driving force of the motor 49 using the side wall of the washing / dehydrating tub 40 as a driven force transmitting surface.
The drive transmission part 50 which rotates 0 is provided.

The outer tub 42 has a box-like shape with an open upper surface, and a convex portion 51 that bulges upward is formed at the center of the bottom surface, and a support groove 44a in the shape of a skirt is formed at the center of the convex portion 51. Circular water reservoir 52 with a lower circumference
It is said that. In addition, legs 53 are integrally formed on the bottom surface,
The side surface and the bottom surface of 2 are sealed by being integrally molded. A drain port 54 is formed at a position higher than the convex portion 51 on the back side of the bottom surface, and a drain pipe 55 is connected to the drain port 54.

An upper surface plate 57 having an opening 56 is mounted on the upper portion of the outer tank 42, and a lid 58 for opening and closing the opening 57 is attached to the upper surface plate 57.

The water tank 41 is formed with a downward mountain-shaped recess 59 at the center of its bottom surface and a hemispherical projection 43a at the tip thereof. Further, the resistor 4 is provided on the outer peripheral portion of the bottom surface.
A plurality of 2a are formed. Further, an outlet 60 communicating with the water storage portion 52 is formed on the back side of the bottom surface, and a drain valve 61 is provided there.

The projection 43a of the water tank 41 serves as the supported portion 43, the support recess 44a of the outer tank 42 serves as the support portion 44, and the projection 46a fits into the support recess 44a. The water tank 41 is supported by the outer tank 42 by receiving buoyancy from the water stored in 52.

The elastic body 45 composed of a tension spring is brought into contact with the upper part of the side surface of the water tank 41 at a plurality of positions with the outer tank 42, and the water tank 41 is supported in an upright state with respect to the outer tank 42.

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

A pulsator insertion hole 63 is formed in the center of the bottom surface of the washing / dehydrating tub 40, and a washing / dehydrating tub flange 64 is screwed to the periphery of the hole 63, and the pulsator shaft 46 is attached to the washing / dehydrating tub flange 64. Through the bearing 65. Further, a brake body 66 is mounted on the pulsator shaft fixing seat 62 and brought into contact with the washing / dehydrating tub flange 64 to stop the rotation of the washing / dehydrating tub 40.

A balancer 67 containing a fluid is provided on the outer side of the washing / dehydrating tub 40, and a balancer cover 68 is fused to the upper part of the balancer 67.

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

The motor 49 is a continuously variable high speed commutator motor, and is fixed to the upper side of the rear surface of the side surface of the water tank 41. A rubber motor roller 70 is fixed to the lower part of the motor shaft 69, and the motor roller 70 is in sliding contact with the side surface of the balancer cover 68 of the washing / dehydrating tank 40. The drive transmission unit 50 is configured. In the figure, 71 is an overflow port, 72 is a water supply valve, and 73 is a water supply hose.

In the above structure, at the time of washing, the water supply valve 72 is first opened to pour water into the water tank 41. At the initial stage of water injection, the drain valve 61 is opened, and the water is stored in the water storage portion 52 of the outer layer 42 up to a constant water level at the same level as the drain port 54. Then, the water tank 41 is filled with water up to the water level according to the amount of the laundry.

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

The baffle 48 generates a water flow when the motor 49 repeats normal rotation and reverse rotation, and the pulsator 47 is generated.
A stream of water hits and is stirred, and the article to be washed is swung and washed.

When the washing is finished, the motor 49 is stopped and the brake body 66 stops the rotation of the washing / dehydrating tub 40. 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 / dehydrating tub 40, and water is poured up to the water level reaching the overflow port 71 of the water tub 41. Further, it drops from the overflow port 71 and is drained from the drain port 54. It

At the time of dehydration, with the drain valve 61 open,
The rotation speed of the motor 49 is increased to rotate it, and
Spin at high speed to spin the laundry.

During the operation of the fully automatic washing machine, the water tank 41 is moved to the outer tank 4
By being floated in the water stored in 2, the water tub 41 is subjected to buoyancy, and the vibration of the washing / dehydrating tub 40 is damped by water having characteristics different from those of the conventional damping body. Further, the horizontal vibration is damped by the elastic body 45 and the resistor 41a provided on the bottom surface of the water tank.

In this way, the vibration damping effect is enhanced, and the vibration of the outer tub 42 can be reduced. Also, the water tank 41
By lowering the support position of the outer tank 42 from the bottom surface of the outer tank 42 and storing water in the lower portion of the outer tank 42, the center of gravity can be lowered, the hem stability can be increased, and the outer tank 42 can be thinned. Outer tank 4
2 cost reduction.

By fixing the pulsator 47 and rotating the washing / dehydrating tub 40, the object to be washed can be swung and washed, and can be washed evenly. Moreover, it is possible to prevent the laundry from getting tangled, as compared with the conventional pulsator 47 that rotates.

Further, by directly driving the washing / dehydrating tub 40 with the motor 49 via the drive transmission unit 50 to electrically shift the speed, parts are provided as compared with the mechanical shifting method using a speed reducer, a washing / dehydrating switching clutch and the like. By reducing the number of points and the number of parts, it is possible to improve the reliability of the product and reduce the cost.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

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

The supporting portion 44 of the outer tank 42 may be convex upward and the supported portion 43 of the water tank 41 may be concave upward.

[0044]

As is apparent from the above description, the water tank in which the washing / dehydrating tank is rotatably installed is floated on the outer tank in which the lower part is sealed and the water is stored, and the bottom surface of the water tank is supported by the bottom surface of the outer tank. Therefore, the vibration of the washing / dehydrating tub is damped by water, and the vibration of the outer tub can be reduced. Moreover, since the supporting position is low, the center of gravity of the washing machine is low, the hem stability can be increased, the outer tub can be made thin, and the cost of the outer tub can be reduced.

Further, by directly driving the washing / dehydrating tub with the motor via the drive transmission unit, the number of parts can be reduced and the number of parts can be reduced as compared with the mechanical speed change system using a speed reducer, a washing / dehydration switching clutch and the like. As a result, the reliability of the product can be improved and the cost can be reduced.

[Brief description of drawings]

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

FIG. 2 is a rear view of the water tank of the present invention.

FIG. 3 is an overall configuration diagram of a conventional fully automatic washing machine.

[Explanation of symbols]

 40 Washing / dehydrating tank 41 Water tank 41a Resistor 42 Outer tank 43 Supported part 44 Support part 45 Elastic body 46 Pulsator shaft 47 Pulsator 48 Baffle 49 Motor 50 Drive transmission part

Claims (1)

[Claims] 1. A water tub having a washing machine dehydration tub installed therein, and an outer tub in which a lower part provided inside the water tub is sealed and water is stored.
The washing / dehydrating tub rotation driving motor arranged on the upper part of the water tub and the drive transmitting unit for rotating the washing / dehydrating tub directly by the driving force of the motor with the side wall of the washing / dehydrating tub as the driven force transmitting surface are provided. The washing tank is characterized in that the water tank is floated in the water, a supported portion is provided at the center of the bottom surface of the water tank and a support portion is provided on the bottom surface of the outer tank facing the water tank, and a resistor is provided on the outer circumference of the bottom surface of the water tank. Machine.