JPH05220293A - Washing machine - Google Patents

Abstract

PURPOSE:To provide a compact washing machine having excellent vibration- proof property and eliminated with excess component parts and gap. CONSTITUTION:A washing machine 1 is provided with an operation section 4 having a rotary tub 3 connected to a drive section 2, a rectangular solid- shaped outer box 5 forming an upper outer box 51 storing the rotary tub 3 with a partition wall 50 provided to partition the drive section and the rotary tub 3 and a lower outer box 52 storing a drive tub, and an elastic support section 6 provided between the outer box 5 and the drive section 2 and elastically suspending and supporting the operation section 4. The partition wall 50 is a bottomed cylinder surrounding the rotary tub 3, and the elastic support section 6 and the wiring 7 for controlling the drive section 2 are provided in a gap between the peripheral face of the partition wall 50 and the side face of the outer box 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-tank type dewatering washing machine in which washing and dewatering are performed in the same rotary tub.

[0002]

2. Description of the Related Art Generally, a dehydration washing machine a as shown in FIG.
It has been known. That is, the dewatering washing machine a accommodates the operating portion d having a bottomed cylindrical rotary tub c that is connected to the driving portion b and is rotatable, and stores the entire operating portion d, and rotates with the driving portion b. A rectangular parallelepiped outer box h configured to form an upper outer box f for housing the rotary tank c and a lower outer box g for housing the drive part b by a partition wall e provided so as to partition the tank c. And an elastic support part i provided between the outer box h and the drive part b and adapted to elastically suspend and support the operating part d.

The rotary tub c of the dehydration washing machine a is rotated at the time of dehydration to pump water in the rotary tub c above the rotary tub c, and a drain hole provided at the upper peripheral edge of the rotary tub c. The water is drained from j to the outside of the rotary tank c. And
The water drained from the rotary tank c is once received in the upper outer box h, and then discharged to the outside from the upper outer box f through the drainage pipe k. Further, the drive part b for driving the rotary tank c is supported by the elastic support part i in the lower outer box g in which the drainage during the dehydration is not scattered.

Conventionally, a partition wall e for partitioning the upper outer box f and the lower outer box g is provided so as to simply partition the bottom part of the rotary tank c and the drive part b in the horizontal direction. It was being done.

The elastic supporting part i is elastically supported in the outer box h by connecting the entire operating part d to the rod l suspended from the partition wall e by connecting the driving part b via a spring m or the like. I was supposed to do. Further, a ball joint n is provided at the end of the rod l, and this ball joint n is used for the outer box h.
Also, the actuating portion d is configured to be swingable in the outer box h by being supported by a hemispherical seat o formed on the driving portion b.

[0006]

However, in the case of the above-described conventional spin-drying washing machine a, since it is connected to the drive unit b via the spring m etc. to the rod l suspended from the partition wall e, it is limited. Also, the operating part d had to be supported inside the lower outer box g, and the rod l could not be lengthened. Therefore, the operating part d cannot be suspended and supported in a well-balanced state, and as a result, the operating part d itself is shaken by the rotation of the rotary tank c.

Further, the operation of the spin-drying washing machine a is usually performed by operating a control panel (not shown) provided on the upper surface of the outer box h to drive the drive section b. Therefore, the wiring p is provided between the upper surface of the outer box h and the drive section b. However, in the case of the conventional spin-drying washing machine a, the inside of the outer box h is horizontally partitioned by the partition wall e. Because
This wiring p had to be routed inside the upper outer box f.
That is, the wiring p is placed in the upper outer box f where the water is scattered during dehydration.
However, there is a problem in that the wiring p must be protected by a waterproof pipe q or the like so as to be sufficiently waterproof.

Further, since the rotary tank c is housed in the upper outer box f formed in a rectangular parallelepiped shape, the gap between the rotary tank c and the upper outer box f is not uniform. Therefore, when the rotary tank c rotates, a pressure difference is generated in the gap between the rotary tank c and the upper outer box f, and there is a disadvantage that a rolling phenomenon occurs in which the rotary tank c revolves at a low speed and rotates at a high speed.

When the rotary tank c rotates, in addition to the above-described swing, as shown in FIG. 9, when the natural frequencies V1 and V2 of the operating portion d generated at the start of rotation are passed. The operating part d will swing. The runout of the operating part d is absorbed to some extent by the elastic force of the spring m, but since the runout is suspended in the outer box h so that the runout is generated, the operating part d moves outside. It swings in the box h. Therefore, the outer box h must be formed in such a large size that a sufficient gap can be formed between the outer box h and the operating part d so as not to collide with the operating part d due to the swing of the operating part d. There was an inconvenience.

Therefore, the ball joint n of the elastic support portion i and the seat o
It is conceivable to suppress the swinging of the actuating part d by preventing the sliding force with the actuation from acting too much, but in this case, the vibration transmitting force to the outer box h via the elastic supporting part i becomes large, so This results in inconvenience such as giving a discomfort to.

As a washing machine for solving the above-mentioned suspension balance, water splash, rolling phenomenon, etc.,
As shown in FIG. 10, a washing machine r without the partition wall e has been proposed. 10, the same members as those in FIG. 8 are designated by the same reference numerals.

That is, in this washing machine r, a rotary tub c formed so as to have a large number of drain holes j is surrounded by an outer tub s, and the outer tub s is supported by an elastic supporting portion i. The water for dehydration is scattered in the outer tank s. However, in the case of this washing machine r, the amount of water corresponding to the outer tub s is required at the time of washing, but the inconvenience arises that only the capacity of the rotating tub c is secured as the washing capacity. In addition, since it is necessary to provide a gap between the rotary tub c and the outer tub s, and between the outer tub s and the outer box h, the size of the entire washing machine is increased relative to the capacity of the rotary tub c. It causes inconvenience such as being lost. Further, since it has the two-tank structure of the rotary tank c and the outer tank s, the structure becomes complicated and the number of parts increases, which is disadvantageous.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a washing machine which is excellent in vibration damping properties and which is compact in size by eliminating extra components and gaps. There is.

[0014]

SUMMARY OF THE INVENTION A washing machine of the present invention for solving the above-mentioned problems includes an operating part having a bottomed cylindrical rotary tub which is connected to a drive part and is rotatable, and an entire operating part. Of the rectangular parallelepiped shape that is configured to form an upper outer box that houses the rotary tank and a lower outer box that houses the drive tank by a partition wall that is provided to partition the drive unit and the rotary tank. A washing machine comprising an outer box and an elastic support portion provided between the outer box and the drive portion and adapted to elastically suspend and support the operating portion, wherein the partition wall is rotatable. It has a bottomed cylindrical shape surrounding the tank, and an elastic support portion, wiring for controlling the drive portion, and the like are provided in the gap between the circumferential surface of the partition wall and the side surface of the outer box.

Further, the washing machine of the present invention has an operating part which is connected to a driving part and is rotatable, an outer box adapted to accommodate the operating part, and a spherical ball joint at one end. And a rod having an elastically expandable spherical elastic ball joint at the other end, the ball joint being slidably supported by a hemispherical seat formed on the outer box, and The elastic ball joint is slidably supported by a hemispherical seat formed in the actuating portion, so that the actuating portion is elastically suspended and supported in a swingable manner in the outer box. In a washing machine made, a spring made of a shape memory alloy for pressing a ball joint and a heater for heating the spring are provided on the seat of the outer box, and in the vicinity of the operating portion,
Rotation speed detecting means for detecting the rotation speed of the operating portion is provided, and the sliding force between the seat and the ball joint of the outer box is adjusted by heating the spring with the heater according to the rotation speed of the operating portion. It was made possible.

[0016]

According to the washing machine of the present invention as set forth in claim 1, since the partition wall has a bottomed cylindrical shape surrounding the rotary tub, the gap between the circumferential surface of the partition wall and the side surface of the outer box is It can be effectively used as a space in which an elastic support portion, wiring for controlling the drive portion, and the like are provided. In addition, the circumference of the rotating tank is
Since it is surrounded by the bottomed cylindrical partition wall, the gap between the rotary tank and the partition wall becomes uniform.

According to the washing machine of the second aspect, the spring is heated by the heater in accordance with the number of rotations of the operating part to adjust the sliding force between the seat of the outer box and the ball joint. It is possible to suppress the swinging of the operating portion inside the outer box.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

[0019]

Embodiment 1 FIGS. 1 to 4 show the outline of the entire structure of a washing machine 1.

That is, this washing machine 1 accommodates the operating part 4 having a bottomed cylindrical rotary tub 3 which is connected to the driving part 2 and is rotatable, and the operating part 4 as a whole, and the driving part 2 A partition wall 5 provided so as to partition the rotary tank 3 from the rotary tank 3.
0, the upper outer box 51 that houses the rotary tank 3 and the drive tank 2
A rectangular parallelepiped-shaped outer box 5 configured to form a lower outer box 52 for accommodating therein, and provided between the outer box 5 and the drive unit 2 so as to elastically suspend and support the operating unit 4. And the partition wall 50.
Has a bottomed cylindrical shape that surrounds the rotary tank 3, and the wiring 7 for controlling the elastic support portion 6 and the drive portion 2 is provided in the gap between the circumferential surface of the partition wall 50 and the side surface of the outer box 5. Etc. are provided.

The drive unit 2 includes a support plate 21 and a drive motor 2
2 and the bearing portion 23 are attached.
That is, the drive motor 22 and the bearing portion 23 are attached to the back surface of the support board 21, and both of them can be driven and transmitted by the pulley 24. Further, a magnet 26 is provided on a pulley 24 provided on a rotary shaft 25 of the bearing portion 23, and a reed switch 27 is provided on a support board 21 near the rotation track of the magnet 26. The reed switch 27 counts the number of passages of the magnet 26 so that the number of rotations of the rotating shaft 25 can be grasped. This reed switch 27 has wiring 7
Is connected to a control unit 8 provided above the outer box 5, and by operating this control unit 8, the drive state of the drive unit 2 can be freely controlled.

The rotary tank 3 has a cylindrical shape with a bottom.
A liquid sealing balancer 31 which can be fitted and inserted into the upper end opening is provided on the periphery of the upper end opening. Further, a dehydration hole 32 is provided at a position on the periphery of the opening and slightly below the liquid-filled balancer 31. Then, at the time of dewatering, the water pumped up above the rotary tub 3 by the centrifugal force generated by the rotation of the rotary tub 3 is used to remove the water.
It is designed to drain from the outside to the outside. Further, the bottom of the rotary tub 3 is provided with a rotary blade 33 that agitates the water in the rotary tub 3 during washing. And the rotary tank 3
The rotary blade 33 is connected to the rotary shaft 25, and the bearing 2
The clutches (not shown) in 3 are switched so that they can be rotated independently.

The outer case 5 is formed so that a lower outer case 52 adapted to accommodate the drive unit 2 and an upper outer case 51 adapted to accommodate the rotary tank 3 can be combined. In a state where the outer case 52 and the upper outer case 51 are combined together, a rectangular parallelepiped outer case 5 for accommodating the entire operating portion 4 is formed.

Of these, the upper outer box 51 is provided with a partition wall 50 which is designed to form a cylindrical space with a bottom, and the rotary tank 3 can be housed in the partition wall 50. There is. The partition wall 50 is provided at its bottom with an opening 53 adapted to communicate with the rotary shaft 25. The opening portion 53 is provided with a bellows portion 54 configured to close the opening portion 53 in a rotatable state of the rotating shaft 25.

Hemispherical seats 55 are provided outside the partition wall 50 and above the four corners of the upper outer box 51. Then, by connecting the receiving seat 55 and the support board 21 of the drive unit 2 with the elastic support unit 6, the outer box 5
The entire operating portion 4 is elastically suspended and supported therein.

The elastic supporting portion 6 has a spherical ball joint 6 at one end.
1 is fixed and a spring receiver 62 is fixed to the other end of the rod 63, and a sleeve 65 is slidable on the spring receiver 62 via a spring 64. The ball joint 61 is supported by the receiving seat 55 provided on the upper outer box 51, and
The sleeve 65 is a seat 2 formed on the back surface of the support board 21.
8 and is elastically supported by the support plate 21 by the elastic force of the spring 64. In this state, rod 6
Since 3 is arranged in the gap between the upper outer box 51 and the partition wall 50, the rod 63 can be made to have a sufficient length to suspend and support the entire operating portion 4 in a well-balanced state. Therefore, the rotation tank 3 can be prevented from swinging. Further, since the rotary tank 3 itself is also surrounded by the bottomed cylindrical partition wall 50, when the rotary tank 3 rotates, the air pressure difference between the rotary tank 3 and the partition wall 50 becomes uniform, and It will rotate in a stable state that does not occur. That is, the partition wall 50
By making the bottomed cylindrical shape, the operating part 4 can be suspended and supported in a stable state, and the rotating state of the rotary tub 3 can also be stabilized, so that the washing machine 1 having excellent vibration damping properties can be obtained.
Becomes In addition, the wiring 7 can be provided between the partition wall 50 and the outer case 5 without providing a waterproof structure, and the number of parts can be reduced.

[0027]

[Embodiment 2] This embodiment is shown in FIGS.

In this example, the sliding force between the receiving seat 55 of the upper outer box 51 and the ball joint 61 of the elastic support portion 6 can be adjusted, and other configurations are the same as those in the first embodiment. Therefore, only the difference will be described here, and the other description will be omitted. The same members as those in the first embodiment are designated by the same reference numerals.

That is, the receiving seat 55 of the upper outer box 51 is provided with a cover 91 adapted to cover the supporting portion 61.

The cover 91 is provided with a heater 92 on the surface facing the ball joint 61. And the heater 9
The temperature of the heater 92 can be detected by the thermistor 93 installed in the second unit. The heater 92 and the thermistor 93 are connected to the control unit 8 through the wiring 94,
The temperature can be controlled by the control unit 8.

A spring 95 made of a shape memory alloy is provided between the heater 92 and the ball joint 61, and when the heater 92 reaches a predetermined temperature, the spring 95 presses the ball joint 61 against the seat 55. It is done like this. Accordingly, when the pressing force of the spring 95 is weak, the ball joint 61 can easily slide in the seat 55, that is, the operating portion 4 can swing, and when the pressing force of the spring 95 is strong, the ball joint 61 moves. Difficult to slide in the seat 55,
It becomes difficult for the operating unit 4 to swing. That is, by changing the pressing force of the spring 95 by controlling the temperature of the heater 92, it is possible to change the swinging state of the operating portion 4 inside the outer box 5.

Next, the operation during dehydration will be described.

However, in the washing machine 1, if there is a bending of the laundry in the rotary tub 3, 60 rpm and 150 rpm.
It is assumed that the operating portion 4 has a resonance point near rpm and the amplitude is constant from around 300 rpm. Further, as shown in FIG. 6, the spring 95 made of the shape memory alloy has a spring force P with respect to the deflection amount L at room temperature.
1 and the spring force P2 is changed with respect to the deflection amount L at 60 to 80 ° C.

First, as shown in FIG. 7, when the dehydration is started, the heater 92 is turned on and the thermistor 93 is heated to 80 ° C.
It is detected whether or not the following (steps 1 to 3).

When the temperature of the heater 92 is 80 ° C. or higher, the heater 92 is turned off, and the same operation is repeated until the heater 92 becomes 80 ° C. or lower (step 4).

If the temperature of the heater 92 is 80 ° C. or lower, it is detected whether the heater 92 is 60 ° C. or higher (step 5).

When the temperature of the heater 92 is 60 ° C. or lower, the heater 92 is turned on (step 6) and the heater 92 is turned on.
The operation from step 3 onward is repeated until the temperature becomes higher than or equal to 80 ° C. and lower than or equal to 80 ° C.

In this way, when the heater 92 enters the predetermined temperature range, the shape memory alloy spring 95 changes, and the pressing force of the shape memory alloy spring 95 becomes strong, so that the operating portion 4 moves. It becomes difficult to swing.
Then, the drive motor 22 is turned on and the rotation of the rotary tank 3 is started (step 7). At this time, the rotary tank 3 is 60r
When passing the resonance point around pm and 150 rpm,
Although the operating portion 4 tries to swing, the pressing force of the shape memory alloy spring 95 makes it difficult to swing, so that the operating portion 4 is prevented from swinging. During this time, as in steps 3 to 6, the heater 92
Is controlled to be 60 ° C. or higher and 80 ° C. or lower (steps 8 to 11).

The number of passages of the magnet 26 provided on the pulley 24 is counted by the reed switch 27 to measure the number of revolutions of the rotary tank 3, and the number of revolutions is 300.
It is detected whether the speed is equal to or higher than rpm (step 12).

If this rotation speed is not 300 rpm or more, it means that the rotary tank 3 is not rotating in a stable state.
Since it is necessary to keep the operating portion 4 in a state in which it is difficult to swing, the operations after step 7 are repeated and the heater 9
2 is continuously controlled within a predetermined temperature.

The rotation speed of the rotary tank 3 is 300 rpm.
In the above case, the heater 92 is turned off, and the rotary tank 3 is in steady rotation (steps 13 and 14). That is, when the heater 92 is turned off, the shape memory alloy spring 95 is naturally cooled and returned to the spring force at room temperature, so that the actuating portion 4 becomes swingable and vibration of the outer case 5 is prevented. Transmission will be reduced.

In this embodiment, 60 rpm and 1
There is a resonance point of the operating part 4 near 50 rpm, and 300 rp
Washing machine 1 configured to have a constant amplitude from around m
However, the present invention is not limited to this and may be a washing machine having an appropriate resonance point.

A spring 95 made of a shape memory alloy is also used.
Is the spring force P against the deflection L at 60 to 80 ° C.
However, the present invention is not limited to this, and a desired change temperature can be obtained as long as the change temperature is slightly different from the temperature in the normal use state of the washing machine 1. The spring 95 can be used.

[0044]

As described above, according to the present invention as set forth in claim 1, in the gap between the circumferential surface of the partition wall and the side surface of the outer box,
Since the wiring for controlling the drive unit can be provided, it is not necessary to take waterproofing measures for this wiring, and the cost can be reduced. Moreover, the circumferential surface of the partition wall and the side surface of the outer box can be separated from each other. Since the gap is formed from the upper end to the lower end of the outer box, by providing the elastic support portion using this gap, the operating portion can be suspended in a well-balanced state.

Furthermore, since the gap between the rotary tank and the partition wall becomes uniform, the rotation of the rotary tank prevents a pressure difference from being generated in the gap, and the runout of the operating portion due to the rolling phenomenon can be prevented. it can.

According to the second aspect of the present invention, the sliding force between the seat of the outer box and the ball joint can be adjusted to suppress the swinging of the operating portion in the outer box. It is possible to make the washing machine compact by reducing the gap between the operating portion and the outer box.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the outline of the overall configuration of a washing machine.

FIG. 2 is a cross-sectional view schematically showing the overall configuration of the washing machine taken along the line AA in FIG.

FIG. 3 is a cross-sectional view showing an outline of the entire configuration of the washing machine taken along the line BB of FIG.

FIG. 4 is a cross-sectional view showing the outline of the overall configuration of the washing machine taken along the line CC of FIG.

FIG. 5 is a view according to the second embodiment and is a cross-sectional view showing a connected state of the seat of the outer box and the ball joint.

FIG. 6 is a graph showing characteristics of a shape memory alloy spring.

FIG. 7 is a flowchart illustrating the operation of the washing machine according to the second embodiment.

FIG. 8 is a cross-sectional view showing a conventional washing machine.

FIG. 9 is a graph showing vibration characteristics of a washing machine.

FIG. 10 is a cross-sectional view showing another conventional washing machine.

[Explanation of symbols]

 1 Washing machine 2 Drive part 27 Reed switch (rotation speed detection means) 3 Rotating tank 4 Operating part 5 Outer box 50 Partition wall 51 Upper outer box 52 Lower outer box 55 Seat 6 Elastic support 61 Ball joint 63 Rod 65 Sleeve ( Elastic ball joint) 7 Wiring 95 Spring 92 Heater

Claims (2)

[Claims] 1. An operating part having a bottomed cylindrical rotary tub which is connected to a drive part and is rotatable, and an operating part as a whole, and a partition provided between the drive part and the rotary tub. A partition wall is provided between the outer box and the drive unit, and a rectangular parallelepiped outer box configured to form an upper outer box that houses the rotary tank and a lower outer box that houses the drive tank. A washing machine comprising: an elastic support portion adapted to elastically suspend and support a portion, wherein the partition wall has a bottomed cylindrical shape surrounding a rotary tub,
A washing machine characterized in that an elastic support portion, wiring for controlling a drive portion, and the like are provided in a gap between the circumferential surface of the partition wall and the side surface of the outer box. 2. An actuating part which is connected to a driving part and is rotatable, an outer box adapted to accommodate the actuating part, a spherical ball joint at one end, and an elastic extension / contraction at the other end. And a rod having a spherical elastic ball joint capable of sliding, the ball joint being slidably supported by a hemispherical seat formed in an outer box, and the elastic ball joint having an operating portion. A washing machine, which is slidably supported by a hemispherical seat formed on the inner surface of the outer box, so that an operating portion is elastically suspended and supported in a swingable state in an outer box. A spring made of a shape memory alloy for pressing a ball joint and a heater for heating the spring are provided on the seat of the outer box, and the number of rotations of the operating portion is detected in the vicinity of the operating portion. A rotation speed detection means is provided, and a spring is spun by a heater according to the rotation speed of the operating part. By heating the washing machine, characterized in that the sliding force between the seat and the ball joint of the outer box is made adjustable.