JPH08229280A - Washing machine - Google Patents

Abstract

PURPOSE: To obtain a washing machine having a high degree of freedom in plane shape by internally providing a washing tank with an approximately horizontal washing plate which moves back and forth vertically while maintaining the contact with the wash in the washing tank, mounting a longitudinal partition plate extending approximately perpendicularly downward to the washing plate and providing the washing plate with a transverse partition plate moving cooperatively with the longitudinal partition plate. CONSTITUTION: The washing plate 3 is moved back and forth vertically via a guide shaft 4 by a slider crank mechanism driven by rotation of a motor 9 when operation is started after wash, such as clothing, is thrown together with a detergent into a washing chamber 55. The washing water passing holes 51c... formed at the transverse partition plate 51 generates upward flow and the wash above the washing plate 3 is moved downward during the downward movement of the washing plate 3. Namely, the washing water and the wash are so moved as to circulate vertically. On the other hand, the wash above the washing plate 3 is pushed upward during rise of the washing plate 3. At this time, the forward and backward movement of the wash is hindered by the presence of the longitudinal partition plate 11 and, therefore, the entanglement of the cloth of the wash is suppressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric washing machine for washing dirty clothes and the like.

[0002]

2. Description of the Related Art Conventionally, the following methods have been put into practical use as a washing machine. That is, the item to be washed is put in a washing tub filled with washing water, a water flow is generated inside the washing tub by using a stirring blade (pulsator) or a stirring rod, and the dirt on the item to be washed in the washing tub is washed away with the washing water. There is a method. Further, there is a method in which an object to be washed and washing water are put in a rotary drum having a horizontal rotary shaft, and the rotary drum is rotated so that the object to be washed is stirred and dropped in the rotary drum to perform tap washing. is there.

The above washing-type washing tub is basically formed in a cylindrical shape having a circular or substantially square planar shape.
Further, the rotary drum of the tap wash type is usually formed in a cylindrical shape. These washing tubs and rotating drums are usually combined with the outer frame of the main body of a rectangular parallelepiped washing machine.

[0004]

However, in the above combination, the degree of freedom in the plane shape of the washing machine is low, and in the combination of the rectangular parallelepiped and the cylindrical shape, the space efficiency is never good. On the other hand, if the flat shape of the washing machine is made to have a desired shape, for example, an elongated shape, the size of the washing tub or the rotating drum may be limited, which may cause a problem that satisfactory performance cannot be obtained. It was

Therefore, an object of the present invention is to solve the above technical problems and to provide a novel washing machine having a high degree of freedom in plane shape.

[0006]

In order to achieve the above object, a washing machine according to a first aspect of the present invention includes a washing tub containing a laundry and an amount of washing water in which the laundry is immersed, and a washing tub in the washing tub. There is a washing plate that is arranged substantially horizontally and is supported so as to be movable in the vertical direction while being in contact with the laundry in the washing tub, a driving means that reciprocates the washing plate in the vertical direction, and is attached to the washing plate. A vertical partition plate that extends substantially vertically downward from the wash plate, and a horizontal partition plate that cooperates with the vertical partition plate to divide the inside of the washing tub into an upper chamber in which the wash plate exists and a lower chamber, Laundry water can pass between the upper and lower chambers, but laundry cannot pass through. A horizontal partition plate with a number of small holes and a side wall inside the washing tub. And a passage for communicating washing water from the upper chamber to the lower chamber.

A washing machine according to a second aspect is the first aspect.
In the washing machine according to 1, the washing tub has a planar shape that is elongated in one direction, and the washing plate is disposed substantially in the center of the washing tub in a plan view, and the inner surface of the washing tub along the longitudinal direction of the washing tub. And the inner surface of the washing tub along the direction orthogonal to the longitudinal direction of the washing tub is provided with a space provided so that laundry can be put therein.

A washing machine according to a third aspect of the present invention is the washing machine according to the first aspect.
Or in the washing machine according to 2, the upper end of the passage opens above the water surface in the upper chamber and the other end opens in the lower chamber.
It is characterized in that at least one of washing water and air can be taken in from the upper end opening and passed through the lower end opening to the lower chamber. The washing machine according to claim 4 is the washing machine according to claim 3, wherein a lower end opening of the passage is provided with a check valve for preventing washing water in the lower chamber from flowing into the passage from the lower end opening. It is characterized by that.

[0009]

According to the structure of the invention according to claim 1, the inside of the washing tub is divided into an upper chamber and a lower chamber having a washing plate by the vertical partition plate and the horizontal partition plate attached to the washing plate. Therefore, as the washboard descends, the wash water below the washboard moves into the surrounding lower chamber. The moved wash water pushes the wash water in the lower chamber and distributes it to the upper chamber through the small holes formed in the horizontal partition plate. At this time, a flow that flows upward into the upper chamber occurs, and with this, the laundry in the upper chamber tends to move above the washing tub. In addition, the wash water and the laundry above the washboard move downward in the upper chamber. As a result, the wash water and the laundry circulate vertically in the upper chamber. On the other hand, when the washboard rises, the laundry is pushed upward against the circulating wash water. At this time, the laundry is rubbed between the washboard and the laundry, and the dirt is washed off. Also, since the laundry circulates, it can be washed evenly.

Also, since the upper chamber and the lower chamber are partitioned by the vertical partition plate and the horizontal partition plate, when the washing plate descends, the washing water mainly flows into the upper chamber through the small holes. As a result, a large amount of washing water flows upward in the upper chamber, so that the laundry is well stirred and washed more effectively. Further, when the washing plate rises, the washing water flows into the lower portion of the washing plate from the periphery thereof. At the same time, since the surrounding laundry also tries to flow into the flow of the wash water, it is assumed that the laundry blocks the flow of the wash water and prevents the wash water from flowing in sufficiently. Even in such a case, since the wash water can flow from the passage, the flow of the wash water to the lower side of the wash plate is not hindered, and the negative pressure is not generated below the wash plate. Rises smoothly.

Further, since the washing operation is not so much related to the plane shape of the washing tub, the plane shape of the washing tub can be freely set, resulting in a high degree of freedom in designing the washing machine. According to the configuration of the invention of claim 2, in addition to the function of the invention of claim 1, there is a portion between the washboard and the washing tub where a space for passing the laundry is opened. In the open portion, since the laundry is easy to move, the laundry is well agitated and washed more effectively by the wash water flowing upward in the upper chamber.

Also, since the plane shape of the washing tub is long in one direction, this washing machine can be easily installed in a narrow space. According to the configuration of the invention according to claim 3, the claim 1 or 2
In addition to the operation of the invention described in (1), since the upper end opening of the passage is above the water surface, washing water or air can be taken into the passage even when the upper chamber is filled with laundry. Therefore, when the washboard is raised, no negative pressure is generated in the lower chamber or below the washboard, and the washboard can be raised smoothly.

According to the configuration of the invention of claim 4,
In addition to the effect of the invention described in claim 3, when the washing plate descends, the check valve prevents wash water from flowing into the passage from the lower chamber, so that the wash water can be efficiently introduced from the lower chamber to the upper chamber. .

[0014]

Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. In the following description, the “left-right direction” and the “front-back direction” are directions based on the front view of the washing machine. The first embodiment of the washing machine of the present invention is shown in FIGS.
Will be described in detail with reference to. FIG. 1 is a sectional side view showing a schematic configuration of a first embodiment of a washing machine of the present invention. FIG. 2 is a sectional front view of the washing machine of FIG. This washing machine
For example, a main body 1 having a rectangular parallelepiped box shape for determining the outer shape and a washing tub 2 in the main body 1 capable of accommodating laundry and washing water are provided. The washing tub 2 is formed in a rectangular box shape that is long in the front-rear direction in a plan view. In the washing tub 2, a pair of side walls 50 extending along the front and rear surfaces of the washing tub 2, and a pair of horizontal partition plates 51 extending along the bottom of the washing tub 2 in front of and behind the bottom of the washing tub 2.
A washing plate 3, which is a rectangular plate member that moves up and down, is provided. The laundry is housed in the washing tub 2 in a compartment (laundry room) 55 between the pair of side walls 50 and above the pair of horizontal partition plates 51 and the wash plate 3.

The washing plate 3 is provided in the central portion of the washing tub 2 in a plan view with its plate surface horizontal. The washboard 3 is provided close to the left and right inner surfaces of the washing tub 2 and is spaced apart from the front and rear inner surfaces of the washing tub 2 so that laundry can be taken out. For example, the front-rear dimension of the washboard 3 is set to approximately half the inner dimension of the washing tub 2 in the front-rear direction. In addition, the gap between the washboard 3 and the left and right side surfaces of the washing tub 2 is 1 to 3
It is set so that it can be suppressed to cm. This is because the laundry does not enter this gap when the washboard 3 moves up and down.
Also, even if it gets in, it can be taken out easily.

On the lower surface of the washing plate 3, a guide shaft 4 extending vertically downward from the center thereof, a bellows 5 which encloses the guide shaft 4 and vertically expands and contracts between the bottom face of the washing tub 2 and water, and a bellows. 5, a pair of rectangular vertical partition plates 11 that limit the passage of laundry and washing water extending downward from the lower surface of the washing plate 3 are provided. The pair of vertical partition plates 11 are respectively erected at a predetermined distance from the front and rear ends of the washing plate 3, for example, 50 mm closer to the center. The size of the vertical partition plate 11 is
The vertical partition plate 11 is set so that the laundry does not get caught in the vertical partition plate 11, the vertical movement of the wash plate 3 does not interfere, and the flow of the wash water from the lower side of the wash plate 3 to the front and rear direction is restricted. There is. For example, the horizontal width of the vertical partition plate 11 is substantially equal to the horizontal width of the wash plate 3, and the vertical dimension is larger than the distance between the wash plate 3 and the bottom surface of the washing tub 2 at the lower end position (bottom dead center) of the wash plate 3. It is formed slightly shorter.

At the center of the bottom of the washing tub 2, there is fixed a cylindrical sliding member 6 which supports the guide shaft 4 so as to be vertically movable. Below the sliding member 6, a slider crank mechanism is provided as a drive mechanism for moving the guide shaft 4 up and down. That is, the lower end portion 4a of the guide shaft 4 is rotatably coupled to the upper end portion 7a of the connecting rod 7 by inserting the sliding member 6. A lower end portion 7b of the connecting rod 7 is rotatably connected to an outer diameter portion of the crankshaft 8. The crankshaft 8 is a motor 9
It is fixed to the output shaft of the speed reducer 52 driven by.
The speed reducer 52 and the motor 9 are coaxially connected and fixed to the main body 1. The output shaft of the motor 9 and the rotating shafts at the upper and lower ends of the connecting rod 7 are provided along the axis in the front-rear direction. The rotation of the motor 9 causes the guide shaft 4 to reciprocate in the vertical direction which is the guide direction of the sliding member 6 by the above-mentioned slide crank mechanism, and the washing plate 3 moves up and down.

At the upper end position of the vertical movement (top dead center), the laundry placed on the upper surface of the washing plate 3 is prevented from being extremely exposed on the water surface H, and at the bottom dead center, the washing plate 3 is divided by the horizontal partition plate 51. The position and amplitude of the vertical movement of the washing plate 3 and the dimensions of each part in the washing tub 2 are set so as to reach a little higher than. In the vicinity of the upper edge of the washing tub 2, the water splash preventive portions 2a, 2 which continuously protrude from the inside of the washing tub 2 into the washing room 55.
b is formed, and the lid 10 that covers the washing tub 2 is placed thereon. The water splash prevention portion 2a is provided on the front and rear side surfaces in the washing tub 2, and a step is formed on the upper surface of the protruding tip portion as a gap for ventilation with the lid 10 thereon. An air vent hole 10 a leading to this step is formed in the lid 10. The water splash prevention portions 2b are located on the left and right side surfaces in the washing tub 2 and are smaller than the water splash prevention portions 2a.

In this way, the lid 10 for preventing the scattering of washing water
When the washing tub 2 covers the washing tub 2, it is usually assumed that the reciprocating movement of the washing plate 3 causes the height of the water surface in the washing tub 2 to fluctuate, resulting in a pressure difference between the inside and outside of the washing tub 2. To be done. Therefore, in the present invention, since the air pressure difference is eliminated by the air vent hole 10a, the deformation of the lid 10 and the washing tub 2 due to the air pressure difference is prevented.

The water splash prevention portions 2a and 2b are provided in order to easily and effectively waterproof the openings such as the air vent holes 10a and the gaps. That is, since the water splash prevention portions 2a and 2b are projected into the washing room 55, the vertical movement of the washing plate 3 causes the water surface to sway and move up and down. Even if it scatters, the water surface and water drops hit the lower surfaces of the water splash prevention portions 2a and 2b and are pressed and stopped, so that they do not rise further. Therefore, the washing water is discharged from the gap between the lid 10 and the washing tub 2 and the air vent hole 1
There is no possibility that the washing water will be scattered around the washing machine without reaching 0a. In place of the step for ventilation of the water splash prevention portion 2a,
A vent may be provided in the lid 10 from the outside of the water splash prevention portion 2a to the air vent hole 10a.

In addition, in the washing tub 2, the above horizontal partition plate 5 is provided.
1 and the vertical partition plate 11, the above-mentioned laundry room 5 which is the upper room
In addition to 5, the lower chamber has a water passage 54 through which the washing water can flow between the bottom surface of the washing tub 2 and the horizontal partition plate 51, and the washing water between the side wall 50 and the front and rear side surfaces of the washing tub 2. And a passage 2f through which air can flow. On the side wall 50,
The washing room 55 communicates with the passage 2f above the water surface,
Ventilation port 2g with crosspieces to prevent laundry from entering
And a water passage 2d formed of a small hole that communicates the laundry room 55 and the passage 2f below the water surface above the horizontal partition plate 51 to prevent passage of laundry and allow passage of washing water, and the side wall 5
At the lower end of 0 and below the horizontal partition plate 51, a water passage 2e that connects the passage 2f and the water passage 54 is formed. The water inlet 2e allows the circulation of the wash water flowing out from the passage 2f and opens and closes the check valve 53 that blocks the circulation of the wash water in the opposite direction (the open state is shown in FIG. 1). Is provided.

A large number of holes 51c are formed in the portion of the horizontal partition plate 51 near the side wall 50 so that the water passage 54 and the washing chamber 55 are communicated with each other so that washing water can flow. In addition, between the end portions of the pair of horizontal partition plates 51 near the center of the washing tub 2, openings are formed at predetermined intervals. The vertical partition plate 11 approaches the opening and is inserted and moved. As described above, the inside of the washing tub 2 is largely divided into the washing room 55, the passage 2f, and the water passage 54, which are communicated with each other. Therefore, the washing plate 3 and the bottoms of the washing tub 2 are moved along with the vertical movement of the washing plate 3. The flow of washing water generated by the change in the volume between and flows as follows. That is, when the washing plate 3 descends, the washing water below the washing plate 3 is pushed by the washing plate 3 and moves back and forth, but the washing water in the portion sandwiched by the vertical partition plates 11 is vertically partitioned. Since the movement is restricted by the plate 11, the washing water in the portion not sandwiched by the vertical partition plates 11 mainly passes under the vertical partition plates 11 and flows into the water passage 54. The washing water in the water channel 54 is pushed by the washing water that has flowed in and flows upward through the hole 51c into the washing chamber 55. Further, since the check valve 53 does not allow the wash water in the water passage 54 to flow into the passage 2f from the water passage 2e, the wash water is efficiently introduced into the hole 51c.

When the washing plate 3 is raised, the washing water flows from the surroundings to the lower side of the washing plate 3 in the route opposite to the above-described downward movement. At this time, riding on the flow of this washing water, the washing room 5
Since the laundry in 5 moves, it is conceivable that the laundry collects in the hole 51c or the like that serves as a flow path for the washing water and blocks it. Even in such a case, the washing water flows into the passage 2f from the washing tub 2 through the water passage port 2d. Also,
Even if the water outlet 2d is blocked by the surrounding laundry,
Air flows in from the ventilation port 2g. When the check valve 53 is opened, the check valve 53 passes through the water passage 2e, and the water passage 54 is connected to the passage 2
Since wash water or air flows in from f, negative pressure is prevented from being generated below the washing plate 3. In addition, passage 2f
When the air inside reaches the water passage 2d or the hole 51c, it blows out as bubbles from there, so it pushes away the laundry blocking it and promotes the passage of washing water.

As a means for supplying water to the washing tub 2, a water supply facility (not shown) such as an external water supply is connected to the upper rear part of the main body 1, and water is poured into the washing room 55 from the upper part of the washing tub 2. A pipe 22 and a water supply valve 23 are provided in the middle of the pipe 22. When the water supply valve 23 is opened, water is supplied from the water supply facility into the washing tub 2. Further, as drainage means, below the washing tub 2, a drainage pipe 20 that communicates the drainage hole 2c formed at the bottom of the washing tub 2 with the outside of the main body 1, and a drainage valve 21 in the middle thereof are provided. The end of the drainage pipe 20 is the main body 1
And is led to the outside. When the drain valve 21 is closed, washing water is stored in the washing tub 2, and when opened, it is drained.

Next, the operation of this washing machine will be described. First, laundry such as clothes is put into the laundry room 55 together with the detergent. Then, the water supply valve 23 is opened, a predetermined amount of washing water is supplied, and the washing water is included in the laundry. The amount of water at this time is the amount of water in which the laundry is sufficiently immersed in the washing water, and is set to, for example, 10 to 15 liters of washing water for 1 kg of the laundry. Then, when the motor 9 is rotated, the washing plate 3
Moves up and down, and the laundry is washed as described below.
After the operation of the motor 9 for a predetermined time, the drain valve 21 is opened, drainage is performed, and all operations are completed.

Next, the laundry in the laundry room 55 will be described. The vertical movement of the washing plate 3 stirs the laundry and the washing water in the laundry room 55. That is, when the washboard 3 is lowered,
The flow of washing water through the hole 51c causes an upward flow of washing water along the side wall 50 in the washing chamber 55.
Along with this, the laundry near this area moves upward (arrow C1). At the same time, the laundry above the washboard 3 moves downward as the washboard 3 moves downward (arrow C).
2). As a result, the wash water and the laundry move so as to circulate vertically in the laundry room 55. In addition, when the washing plate 3 is raised, the laundry above the washing plate 3 is pushed up against the circulating water flow as the washing plate 3 moves upward. At this time, the laundry is rubbed against each other in the laundry room 55 such as a washboard and the laundry, and the dirt is washed off. Also, since the laundry circulates, it can be washed evenly.

The laundry directly below the washboard 3 is
It is pushed by the wash board 3 and kneaded in the wash water.
In addition, a large amount of washing water passes between the fibers of the laundry due to the water flow passing through the hole 51c and the laundry moving against the washing water, resulting in the removal of dirt attached to the fibers of the laundry. Is promoted.

By the vertical partition plate 11, the laundry is
Since it cannot pass through the lower center of the washing plate 3 in the front-rear direction, the laundry can be prevented from being caught in the cloth and can be washed more effectively. As described above, in the washing machine of the present invention, in the structure of the washing tub 2 and the washing plate 3 that moves up and down in the washing tub 2 to obtain the above-described washing action, the relationship between the planar shape of the washing tub 2 and the washing action. Since the washing tub 2 can be freely set in the plane shape, the washing machine has a high degree of freedom in designing, and the washing machine can have a high space efficiency. Therefore, in the conventional washing machine including the pulsator, the planar shape of the washing tub can be basically formed only in a circular shape or a substantially square shape, whereas in the present invention, the washing tub 2 has the planar shape as described above. It can be formed in an elongated rectangular shape and can impart sufficient washing ability.

Next, a second embodiment of the washing machine of the present invention will be described. FIG. 3 is a sectional side view showing a schematic configuration of the washing machine of the second embodiment of the present invention. FIG. 4 is a sectional front view of the washing machine of FIG. 3 and 4, in this embodiment, the guide shaft 4, the bellows 5, and the vertical partition plate 11 of the first embodiment.
In place of the horizontal partition plate 51, the guide shaft 34, the bellows 35, the vertical partition plate 36, and the horizontal partition plate 37 are used, respectively, which is a difference from the first embodiment, and other configurations are the first. Is the same as the embodiment described above. That is, the feature of this embodiment is that the first
The embodiment is that the position of the washing plate 3 in the washing tub 2 is elevated and the shape of the horizontal partition plate 37 is different from that of the embodiment.

That is, the guide shaft 34, the bellows 35, and the vertical partition plate 36 are formed longer than the guide shaft 4, the bellows 5, and the vertical partition plate 11 of the first embodiment by the same dimension in the height direction. . As a result, at the bottom dead center, the washing plate 3 is provided with a distance from the horizontal partition plate 37, and more laundry can be accommodated therein. Further, the horizontal partition plate 37 is different from the horizontal partition plate 51 of the first embodiment in that an inclined portion 37a is formed near the side walls 50 of the pair of horizontal partition plates 37, and the pair of horizontal partition plates 37 is The inclined portion 37b is formed near the washing plate 3, and the other configuration of the horizontal partition plate 37 is the same as that of the horizontal partition plate 51. The inclined portions 37a and 37b are curved surfaces having an appropriate curvature, for example, are inclined substantially vertically at the end of the horizontal partition plate 37 and become lower from that, while being substantially horizontal at the center of the horizontal partition plate. , Is formed into a smoothly changing curved surface.

Therefore, when the washing plate 3 is lowered, the laundry that is pushed by the washing plate 3 is guided by the horizontal partition plate 37 along the inclined portion 37b.
Move up, and the laundry on the horizontal partition 37
It turns upward along the inclined portion 37a and moves upward along the side wall 50. Since the washing water also moves, the inclined portions 37a and 37b smoothly guide the flow in the washing room 55. Further, by the inclined portion 37b, the laundry is moved from directly below the washing plate 3 at the end of washing, and it is easier to confirm or take out the laundry after the washing is finished.

As described above, in addition to the operation of the laundry of the first embodiment, the laundry moves well in the front-rear direction as the washing plate 3 reciprocates up and down, so that the laundry is well agitated.
Evenly and effectively washed. The inclined portions 37a, 37
b is not limited to a curved surface, and may be formed in a flat shape, for example. Further, it may be formed separately from the horizontal partition plate.

Also, in this embodiment, the functions and effects described in the first embodiment can be obtained in the same manner. It should be noted that the present invention is not limited to the above-described embodiment, and, for example, a slide crank mechanism is used for the vertical movement mechanism of the washing plate 3, but each variable that determines the movement amount, speed, acceleration, etc. Can be applied in various combinations. It may be determined according to practical dimensions and realistic component performance. Similarly, instead of the slider crank mechanism, other methods such as a link mechanism, a cam mechanism, and a direct drive motor may be used.

In each of the embodiments of the present invention, the vertical partition plate 11 is a plate through which neither washing water nor laundry can pass.
Holes may be formed to allow the passage of wash water.
In this case, a water flow is generated similarly to the hole 51c. Since this water flow is along the horizontal partition plate 51, it has the effect of moving the laundry in the front-rear direction as in the second embodiment. Further, in order not to weaken the water flow from the hole 51c, it is preferable that the opening formed in the vertical partition plate 11 in this case is not so large as the opening above the horizontal partition plate 51.

Further, in each of the embodiments of the present invention, the washing tub 2 is formed mainly in the shape of a rectangular box in a plan view, but the present invention is not limited to this. Moreover, although the washing plate 3 illustrated the oval shape and the rectangular shape, it is not limited to this. Also,
The combination of the washing tub 2 and the washing plate 3 is not limited to the one exemplified above. Further, in each of the embodiments of the present invention, the passage 2f is divided into both sides by the side wall 50, but it may be provided only on one side. In this case, the structure is simple.

Further, in each of the embodiments of the present invention, the side wall 5
The water passage 2d is formed at 0, but it is not always necessary. In addition, various design changes can be made without changing the gist of the present invention.

[0037]

According to the invention of claim 1, the vertical partition plate and the horizontal partition plate allow the wash water to flow from the lower chamber to the upper chamber through the small holes as the washing plate descends. Along with this flow and the movement of the washboard, the wash water and the laundry in the upper chamber circulate vertically in the upper chamber. At this time, the laundry is rubbed between the washboard and the laundry, and the dirt is washed off. Also, since the laundry circulates, it can be washed evenly.

Since the upper chamber and the lower chamber are partitioned by the vertical partition plate and the horizontal partition plate, a large amount of washing water flows out upward in the upper chamber when the washing plate descends, so that the laundry is well washed. Stir and wash more effectively. In addition, when the washboard is raised, even if the washwater cannot sufficiently flow into the lower part of the washboard due to the laundry, the washwater can flow from the passage, so that the washwater does not flow into the lower part of the washboard. It is possible to prevent the negative pressure from being generated below the wash plate, and the wash plate can be raised smoothly.

Since the plane shape of the washing tub can be freely set, the washing machine has a high degree of freedom in design. According to the invention of claim 2, in addition to the effect of the invention of claim 1, the laundry is easy to move at the portion where the laundry passing space between the washboard and the washing tub is open. The laundry is well stirred by the washing water flowing upward in the upper chamber, and is washed more effectively. Further, since the plane shape of the washing tub is long in one direction, this washing machine can be easily installed in a narrow place.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, even when the upper chamber is filled with laundry, washing water or air is discharged from the upper end opening of the passage. Since it can be taken in, no negative pressure is generated in the lower chamber or below the wash plate when the wash plate is raised, and the wash plate is raised smoothly. According to the invention of claim 4,
In addition to the effect of the invention described in claim 3, since the wash water does not flow into the passage from the lower chamber due to the check valve when the wash plate descends, the wash water can be efficiently introduced from the lower chamber to the upper chamber. Therefore, the laundry is well agitated and washed more effectively.

[Brief description of drawings]

FIG. 1 is a sectional side view showing a configuration of a washing machine according to a first embodiment of the present invention.

FIG. 2 is a sectional front view of the washing machine of FIG.

FIG. 3 is a sectional side view showing a configuration of a washing machine according to a second embodiment of the present invention.

FIG. 4 is a sectional front view of the washing machine of FIG.

[Explanation of symbols]

 1 Main Body 2 Washing Tank 2e Water Passage (Lower End Opening) 2f Passage 2g Vent (Upper End Opening) 3 Washing Plate 11 Vertical Partition Plates 37a, 37b Slopes 51, 37 Horizontal Partitioning Plate 51c Hole (Small Hole) 53 Check Valve 54 Water channel (lower chamber) 55 Laundry room (upper chamber) 4, 6, 7, 8, 9, 34, 52 Drive means

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeki Yoshida 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Denki Co., Ltd. (72) Inventor Takuya Noro 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (4)

[Claims] 1. A washing tub for containing laundry and an amount of washing water into which the laundry is immersed, and a washing tub which is disposed substantially horizontally in the washing tub and which is vertically contacted with the laundry in the washing tub. A washboard supported so as to be movable, a drive means for reciprocating the washboard up and down, a vertical partition plate attached to the washboard and extending substantially vertically downward from the washboard, and the vertical partition board in cooperation with the vertical partition plate. Is a horizontal partition plate that divides the inside of the washing tub into an upper room and a lower room, where wash water can flow between the upper and lower rooms, but the laundry can pass through. A horizontal partition plate with a large number of small holes that cannot be formed, and a passage that is provided along the side surface inside the washing tub and connects the upper and lower chambers and allows washing water to flow from the upper chamber to the lower chamber A washing machine characterized by that. 2. The washing machine according to claim 1, wherein the washing tub has a planar shape that is elongated in one direction, and the washing plate is disposed substantially in the center of the washing tub in a plan view. The inner surface of the washing tub which is close to the inner surface of the washing tub along the longitudinal direction of the tub is provided at a space where the laundry can be put into the inner surface of the washing tub along the direction orthogonal to the longitudinal direction of the washing tub. A washing machine characterized by that. 3. The washing machine according to claim 1, wherein the passage has an upper end opened above the water surface in the upper chamber and the other end opened in the lower chamber, and at least one of washing water and air. The washing machine is characterized in that it can be taken in through the upper opening and passed through the lower opening into the lower chamber. 4. The washing machine according to claim 3, wherein the lower end opening of the passage is provided with a check valve for preventing washing water in the lower chamber from flowing into the passage from the lower end opening. Washing machine.