JPH09290091A - Washing machine - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To make it possible to wash laundry made of a delicate material satisfactorily without damage to the laundry, and to simplify and downsize the configuration. SOLUTION: An agitator 5 is disposed on an inner bottom portion of a rotating tub 4, and a plate-like member 36 is disposed above the agitator 5 in a substantially horizontal shape, whereby washing is performed. An object is housed so as not to come into contact with the stirring body 5. Plate member 36
A notch-like portion 37 is formed in the groove, and a water passage 40 is formed between the notch-like portion 37 and the inner surface of the rotary tank 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine suitable for washing laundry which is prone to damage and shrinkage.

[0002]

As is well known, in a general washing machine, a stirrer disposed at the inner bottom of a washing tub is used to generate a water flow to perform a washing operation. There is. By the way, when washing delicate materials such as wool products and silk products with so-called "hand wash" indication, it is known that it is better not to give mechanical power or strong water flow by the agitator. ing.

As a washing machine of this kind, on the inner surface of the washing tub,
A water channel component is attached to form a water channel that extends in the vertical direction, and a pump action is generated at the bottom of the washing tank by the agitator or a pump blade provided on this, and water is passed through the water channel from the opening at the upper end into the washing tank. There is a configuration in which a separating member for separating the agitator from the laundry is provided inside the washing tub.

In this structure, the laundry made of the delicate material is placed on the isolation member and accommodated in the washing tub, and the water at the bottom of the washing tub is raised in the water passage to wash the laundry. The laundry is washed by dropping it from above.

However, in the above-described conventional structure, in order to form the water channel, a separate member for the water channel is required, and a structure for mounting this on the washing tank is also required, and mounting work is also required. However, there is a problem in that the manufacturing cost is high and that the space for mounting the water channel component is required, and the size is increased.

The present invention has been made in view of the above circumstances, and an object thereof is to wash laundry made of a delicate material satisfactorily without damaging the cloth, simplify the structure, reduce the size, and reduce the cost. The purpose is to provide a washing machine that can be manufactured at low cost.

[0007]

According to the present invention, there is provided a washing tub in which an agitator is disposed on an inner bottom portion, and a washing tub disposed in an upper part of the agitator in the washing tub and arranged substantially horizontally. A plate-shaped member for preventing the stirrer from coming into contact with the stirrer, and the plate-shaped member has a part of its peripheral portion formed in a cutout shape, and the cutout-shaped portion is separated from the inner surface of the washing tank. Further, the peripheral edge portion excluding the cutout portion is formed in a shape that abuts the inner surface of the washing tank with almost no gap, and the water passage is formed by the gap between the cutout portion of the plate member and the inner peripheral surface of the washing tank. It is characterized in that it is formed.

In the above structure, the plate-like member for preventing the laundry from coming into contact with the stirring body is located above the stirring body in the washing tub and is arranged substantially horizontally. By placing the laundry on the strip-shaped member, the laundry is separated from the agitator. Further, a water passage is formed between the cutout portion of the plate member and the inner peripheral surface of the washing tank. Then, when the agitator is rotated, a water flow is generated in the lower part of the plate-shaped member, whereby the water in the part rises through the water passage and comes into contact with the laundry. As a result, water (water containing detergent) can pass through the inside of the laundry, so that the laundry can be washed well without damage to the cloth. Further, in this structure, since the water passage can be formed with a simple structure of forming a notch-shaped portion in the plate-shaped member,
The configuration is extremely simple, the size can be reduced, and the cost can be reduced.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. First, FIG.
In the outer box 1, an outer tub 2 having an open upper surface is elastically supported by a suspension mechanism 3. Inside the outer tub 2, a rotary tub 4 serving both as a washing tub and a dehydrating tub
Is rotatably provided, and an agitator 5 is rotatably provided at the inner bottom portion of the rotary tank 4.

As shown in FIGS. 2 and 3, the rotary tank 4 has a cylindrical inner tank made of, for example, stainless steel on the inner peripheral side of a tank main body 6 made of, for example, plastic which gradually expands toward the upper end. The body 7 is arranged with a gap 7a for passing water, and a bottom cover 8 made of, for example, plastic is connected to the lower portion of the inner tank body 7. A gap for water passage is also formed between the bottom cover 8 and the tank body 6.

At the connecting portion between the inner tank body 7 and the bottom cover 8, the inner diameter of the upper end 8a of the bottom cover 8 is smaller than the inner diameter of the inner tank body 7, that is, the inner surface of the inner tank body 7 is A step portion 9 exists at a connecting portion with the upper end portion 8a of the bottom cover 8. The upper end 8a of the bottom cover 8 is formed with a rising portion 10 that rises at two opposing locations, and both end surfaces of the rising portion 10 form a rotation stopping portion 11.

A dehydration hole 6a (see FIG. 1) is formed in the upper portion of the tank body 6, and a large number of holes 7b are formed in the inner tank body 7. A balance ring 12 is attached to the upper end of the tank body 6. Furthermore, in the inner tank body 7, which is located above the stepped portion 9, the protrusion portion 1 for preventing the pull-out is provided.
3 are formed.

Further, as shown in FIG. 1, a water passage port 4a is formed at the bottom of the rotary tub 4, and the port 4a is provided at the inner bottom of the outer tub 2. It communicates with the drain port 15 via the passage 14. The drain port 15 is configured to be opened and closed by a drain valve 16, and a drain hose 17 leading to the outside of the machine is connected to a lower portion of the drain valve 16. An air trap 18 for detecting the water level is formed at the drain port 15. In this configuration,
When the drain valve 16 is opened, the water in the rotary tank 4 is
A, the drainage passage 14, the drainage port 15, the drainage valve 16 and the drainage hose 17 are configured to be discharged to the outside.

An auxiliary drainage port 19 is formed at the front part of the bottom of the outer tub 2, and the auxiliary drainage port 19 is connected to the drainage hose 17 via a connecting hose (not shown). As a result, when the water in the rotary tub 4 is discharged into the outer tub 2 through the dehydration hole 6a during the dehydration operation, this drainage is generated by the auxiliary drainage port 19, the connection hose, and the drainage hose 17.
Will be discharged to the outside through. A water level sensor (denoted by reference numeral 20 in FIG. 8) composed of a pressure sensor is connected to the air trap 18 via an air pipe (not shown).
It is configured to detect the water level inside.

At the outer bottom of the outer tub 2, a motor 22 capable of variable speed driving and a drive mechanism 23 are provided. The motor 22 is composed of, for example, a brushless motor, and is variable in speed by an inverter circuit (not shown). The rotational force of the motor 22 is transmitted to the drive mechanism section 23 via the belt transmission mechanism 24.
Although not specifically shown, the drive mechanism section 23 has a well-known configuration including a clutch mechanism, a speed reducer, a brake device, and the like. In particular, the clutch mechanism has a function of switching between a state in which the rotational force of the motor 22 is decelerated and transmitted only to the stirring body 5 via the speed reducer during washing, and a state in which it is transmitted at high speed to the rotating tank 4 and the stirring body 5 during dehydration. Have

A top cover 25 is attached to the upper part of the outer box 1, and a rear part of the top cover 25 has a top cover 25.
Electromagnetic water supply valve 2 for performing water supply operation into the rotary tank 4
6 is provided, and a water supply device 26a having an automatic detergent feeding function is provided. Further, the top cover 25 is provided with, for example, a half-foldable lid 27 that opens and closes an entrance for loading and unloading the laundry. A tank cover 28 is attached to the upper portion of the outer tank 2, and an inner lid 29 is provided on the tank cover 28 so as to be openable and closable.
A concave portion 29a having a large number of water passage holes (not shown) is formed at the rear side of the inner lid 29, and the water from the water supply valve 26 has the concave portion 29a. After that, it is supplied to the tank.

On the other hand, FIG. 8 shows an outline of the electrical configuration by a combination of functional blocks. In FIG. 7, the control circuit 30 is composed of a microcomputer or the like, has a function of controlling the overall washing operation, and stores a control program therefor. The control circuit 30 includes various key switches such as a power switch, a start switch, a water level setting switch, and a course selection switch provided on an operation panel (not shown). It is configured to receive a water level detection signal from the sensor 20 and a pulse signal from a rotation sensor 32 that generates a pulse signal according to the rotation of the motor 22.

In this case, the control circuit 30 controls the rotation sensor 3
2 has a function of detecting the rotation speed of the motor 22 on the basis of a pulse signal from the pulse motor 2, and particularly detects the rotation speeds of the agitator 5 and the rotary tank 4 from the rotation speed of the motor 22 at the time of washing and dehydration. Has become. Further, the control circuit 3
Reference numeral 0 denotes a display unit 33 including various indicators such as a water level indicator provided on the operation panel (not shown), a buzzer 34 for notifying the end of operation, a water supply valve 26, a drain valve 16 and a motor. 22 is configured to be energized by a drive circuit 35.

Now, as shown in FIG. 1, a plate-like member 36 is disposed in an upper part of the agitating member 5 in the rotary tank 4 so as to be attachable and detachable substantially horizontally. Member 3
6 is for preventing the laundry from coming into contact with the stirring body 5. The plate-shaped member 36 is made of a flexible material such as polyethylene resin and has a generally circular plate shape as shown in FIGS. Part of the part has a substantially linear notch shape, and the notch parts 37, 37 are separated from the inner surface of the rotary tank 4 (the inner surface of the inner tank body 7) and the notch parts 37, 37
A peripheral edge portion (arc-shaped portion 36a) except 37 is formed in a shape that abuts the inner surface of the inner tank body 7 with almost no gap.

The plate member 36 has an outer peripheral portion 3
The thickness of 6b is made thicker and the thickness of the portion 36c other than the outer peripheral portion is made thin, and a plurality of circular ribs 38 are concentrically formed on the portion 36c other than the outer peripheral portion 36b.
Many water passage holes 39 are formed.

When the plate member 36 is arranged in the rotary tank 4, the protrusion 13 is slightly bent.
The arcuate portion 36a is placed on the step portion 9 while overcoming the portion (see FIG. 5). At this time, the cutout portions 37, 37
Has passed through the rising portion 10, and the detent portions 11 on both end surfaces thereof come into contact with or come close to the cutout portions 37, 37. This prevents the plate member 36 from rotating. The water passages 40, 40 (see FIG. 4) are formed by the gaps between the cutout portions 37, 37 of the plate member 36 and the inner peripheral surface of the rotary tank 4.

Now, the case of washing delicate materials such as wool products and silk products marked with "hand wash" in the above configuration will be described. in this case,
For the user, the plate member 36 is housed and arranged in the rotary tub 4 as shown in FIG. 1, the laundry is placed on the plate member 36, and the required amount of detergent is supplied to the water dispenser. After being stored in the detergent dispenser 26a, a course selection switch (not shown) is operated to select a hand washing course, and the start switch is operated.

Then, the control circuit 30 opens the water supply valve 26 and puts a predetermined amount of water into the rotary tub 4 (lower than the water level in the standard automatic operation of washing laundry made of general cloth). The amount of water is preferably such that the laundry is submerged in water), and the detergent is also supplied by this water.
Then, the stirring body 5 is intermittently rotated forward and backward. As a result, a weak water flow is formed below the plate member 36. A part of this water flow flows in the centrifugal direction, flows out through the water passages 40, 40 to above the plate-like member 36, and falls on the laundry. As a result, water (water containing detergent) can pass through the inside of the laundry, so that the laundry can be washed well without damage to the cloth. The water on the upper side of the plate-shaped member 36 passes through a large number of water passage holes 39 or the water passages 40, 40, especially when the stirring body 5 is stopped. Move to the side.

In this case, since the plate-shaped member 36 is flexible, the portion 36c of the plate-shaped member 36 is flexed and deformed up and down, so that water may be discharged between the lower side of the laundry and the plate-shaped member 36. In addition to being easy to enter, it can be expected that the laundry can be expanded and contracted up and down, so that a so-called push washing (relatively weak push washing) action can be obtained. Since the outer peripheral portion 36b of the plate-shaped member 36 has a large wall thickness, the outer peripheral portion 36b can maintain its regularity and the plate-shaped member 36 does not come off from the stepped portion 9. Further, since the plurality of circular ribs 38 are concentrically formed on the portion 36c, the plate member 36 is formed.
Does not flex in the twisting direction, and flexibly deforms in the vertical direction. As a result, the posture of placing the laundry on the plate-shaped member 36 is not greatly disturbed. And since the above-mentioned water passage hole 39 is formed in the portion 36c other than the wall thickness,
The above-described regularity of the outer peripheral portion 36b is not impaired.

Moreover, according to this embodiment, the plate member 36 is
Since the water passages 40, 40 can be formed with a simple structure in which the cutouts 37, 37 are formed in the rotary tank 4, a separate water passage is formed in the rotary tank 4 to pump water and return the water to the rotary tank 4. It is not necessary to do so, the configuration is extremely simple, and the size can be reduced, and the cost can be reduced.

The rotary tank 4 has an inner tank body 7 on the inner surface side of the tank body 6, and a bottom cover 8 is connected to the lower portion of the inner tank body 7. The inner tank body 7 and the bottom portion are connected to each other. A step portion 9 is provided on the cover 8 and the plate-shaped member 3 is utilized by utilizing the step portion 9.
Since 6 is held, the step 9 need not be formed,
This can also simplify the configuration.

9 to 11 show a second embodiment of the present invention, in which the structure of the plate member 41 is different from that of the first embodiment. That is, the plate member 41 is
The two unit members 42 and 43 are connected by a rotatable connecting member 44. Each unit member 42, 43 is
Each of them has the same shape as the plate-like member 41 in the first embodiment, the connecting member 44 is formed integrally with these, has flexibility, and is thus rotatable. The unit members 42 and 43 are the plate-shaped members 4 of the first embodiment.
1 has the same configuration, and therefore, the same reference numerals are given to the same portions, and duplicate description will be omitted.

As shown in FIG. 9, the plate-like member 41 has a lower unit member 42 placed on the step 9 on the inner surface of the rotary tub 4, and is placed on the unit member 43 for washing. And the upper unit member 43 is placed on this laundry. This makes it possible to effectively prevent the laundry from collapsing or rising.

12 to 14 show the third to fifth embodiments of the present invention. In each embodiment, the notch 3
The shape or the number of 7 formed is different from that of the first embodiment. That is, in the third embodiment (FIG. 12), the notch-like portion 37 is formed in a circular arc concave shape, and in the fourth embodiment (FIG. 13), the notch-like portion 37 is linear at three places on the circumference. Formed,
In the fifth embodiment (FIG. 14), it is formed linearly at four places on the circumference. In any of the embodiments, the same effect as that of the first embodiment can be obtained.

FIG. 15 shows a sixth embodiment of the present invention. In this embodiment, the plate-shaped member 51 has a first structure.
Is different from the embodiment. The plate-shaped member 51 has a circular plate shape as a whole, and an outer peripheral portion 51a is formed to have a large wall thickness, and another portion (a part on the center side) 51b is formed to have a small wall thickness. The outer peripheral portion 51a has four portions with a relatively wide circumference, and a water passage 52 is formed in this portion. In this case, although not shown,
The bottom cover 8 of the rotary tank 4 may be provided with, for example, a protrusion-shaped or pin-shaped rotation stopping portion at a portion that comes into contact with or comes close to both ends of the water passage 52. Even in this case, the same effect as that of the first embodiment can be obtained.

16 to 27 show a seventh embodiment of the present invention, in which the following points are different. That is, the plate-shaped member 61 is configured by connecting two unit members 62 and 63 by the hinge portion 64. In this case, in a state where these unit members 62 and 63 are developed in a flat plate shape,
It is arranged in the rotary tank 4. In each unit member 62, 63,
The cutout portion 65 is formed, a reinforcing rib portion 66 that is a thick portion is formed on the outer peripheral portion, and an arcuate reinforcing rib portion 67 is formed. Further, a straightening rib portion 68 is formed so as to extend in the radial direction. Further, a large number of water passage holes 69 each having an elongated rectangular shape are formed so as to be adjacent to the straightening rib portion 68.

As shown in FIG. 19, the straightening rib portion 68 has a base end portion which is vertical and a tip end portion which is curved in an arc shape in the leftward direction in the drawing. The bending direction is set in consideration of the rotation direction of the stirring body 70 and the shape of the raised portion 71 of the stirring body 70. That is, the stirring body 70 is adapted to be driven intermittently in the direction of arrow A in FIG. 21, whereas the ridges 71 are radial as a whole, but are rearward with respect to the direction of rotation thereof. Shape to be inclined. The stirring body 71 is rotated in the direction of the arrow A,
It acts to suck the water on the center side and push the water on the outer side in the centrifugal direction. As a result, the rectifying rib portion 68 turns upward as shown by the arrow B in FIG.

Further, in the rotary tub 4, a suppressing plate 72 for suppressing the floating of the laundry above is arranged. As shown in FIG. 22, this is the two members 73, 7
4 is rotatably connected by a hinge portion 75, which is arranged in an expanded state. Thus, the restraint plate 72 is provided with holes 76 for passing water and holes 77 also serving as handles, and arc-shaped escape recesses 78 are formed at four positions on the outer circumference. There is. In the vicinity of the escape recess 78, a raised portion 79 having a slope 79a is formed.

On the other hand, on the inner surface of the inner tub body 7 of the rotary tub 4, a plurality of hemispherical projections 80 for holding the suppressing plates are formed vertically at four places on the circumference thereof. Then, the suppressing plate 72 is inserted through the relief portion 78 to the convex portion 80 portion of any height, and the suppressing plate 72 is rotated so that the held portion 79 fits between the convex portions 80. To do. As a result, the held portion 79 is fixed between the convex portions 80, and thus the suppression plate 72 is held in the rotary tank 4.

Now, the case of washing delicate materials such as wool products and silk products marked with "hand wash" in the above structure will be described. in this case,
For the user, as shown in FIG. 16, the plate-shaped member 7
1. The laundry and the restraining member 73 are housed and arranged in the rotary tub 4,
Then, a water supply device 26a is provided with a required amount of detergent according to the amount of laundry.
After storing it in the detergent dispenser of No. 1, select the hand washing course by operating the course selection switch (not shown), and operate the water level setting switch to change the water level appropriately to "high water level" or "medium water level". , And “low water level” (both of which are lower than the water level of standard automatic operation for washing laundry made of general cloth and suitable for hand washing), and start Operate the switch.

Then, the control circuit 30 functions as an operation control means and executes a hand washing / laundry operation course. That is, the water supply valve 26 is opened to supply the set amount of water into the rotary tank 4, and the detergent is also supplied by this water. Then, the stirring body 70 is intermittently rotated in the direction of arrow A. As a result, a weak water flow is formed below the plate member 61. A part of this water flow flows in the centrifugal direction, passes through the water passages 40, 40, flows out above the plate-shaped member 61, and falls on the laundry. Further, another part of the water flow generated in the lower portion of the plate-shaped member 61 is rectified by the rectifying rib portion 68 and flows upward from the water passage hole 69. This allows
Water (water containing detergent) can be penetrated into the inside of the laundry from above and below, so that the laundry can be washed well without being damaged.

As shown in FIGS. 24 to 26, the control circuit 30 controls the "water supply", "soak", "keep", "wash", "drain", "drain" and "drain" as shown in FIGS. Shower rinse "," water supply "," trial rinse "," drainage ", and" dehydration "are sequentially executed, and the outline of the execution contents of each process is as follows.
It is as follows. 24, 25, and 26 are
The case where the set water level is "low", "medium", and "high" is shown. For example, the case where the set water level is "high" will be described (see FIG. 26). Further, this washing operation is performed with the plate-shaped member 61 and the suppression plate 72 left in place.

"First water supply" ... The water supply valve 26 is driven to open up to the water level set by the water level setting switch (detected by the water level sensor 20). The approximate time required for water supply at this time is shown in parentheses in the figure, which is about 2 minutes in this case. “Smearing” ... In this case, the stirring body 70 is intermittently driven for 3 minutes. In this intermittent mode, as shown in FIG. 27, the agitator 70 is driven for 1 second (motor energization), and 0.5
Repeatedly being stopped for two seconds (motor cutoff). In this case, the stirrer 70 is operated for 24
At 0 rpm, the next 0.5 seconds is the target rotation speed Nm. In this case, 4
Control to rotate at 80 rpm.

"Putting" ... The state where the rotation of the stirring body 70 is stopped is executed for 12 minutes in this case. "Washing" ... Stirring body 70 is intermittently driven for 3 minutes in this case. This intermittent mode is shown in FIG. 27, and in this case, the target rotation speed Nm is 660 rpm.

"First drainage" ... The drain valve 16 is opened. After 2 minutes, it will remain open and proceed to the "shower rinse" step. "Shower rinsing" ... Rotating tank 4, for example, 360r.pm
The water supply valve 26 is opened and water is supplied into the rotary tank 4 while continuously rotating. Do this for 5 minutes, drain valve 16
To close.

"Second water supply" ... "First water supply"
Same as. “Rinse and rinse” ... The stirring body 70 is intermittently driven in 6 minutes. In this case, the target rotation speed Nm is 660 rpm. “Second drainage” ... The drain valve 16 is opened. After 2 minutes, it goes open to the "dehydration" process. "Dehydration" ... Rotating tank 4 is continuously rotated at 660 rpm. Do this for 5 minutes.

According to the seventh embodiment as described above, in addition to obtaining the same effect as that of the first embodiment, the plate member 61 is also provided.
A large number of water passage holes 69 are formed in the
Since 8 is formed, the water flow generated in the lower portion of the plate-shaped member 61 can be rectified and guided to the water passage hole 69, and water can be caused to flow upward from the water passage hole 69, which is a cleaning effect on the laundry. Can be further increased.

In particular, since the rectifying rib portion 68 has a base end portion in a vertical shape and a tip end portion in a curved shape, the water passage hole 6 can be satisfactorily passed.
You will be able to guide to 9. In addition, after performing a washing process in which the stirring body 70 is intermittently rotated for a predetermined time, the stirring body 7
Since the soaking process is executed by stopping 0 for a predetermined time, the water containing the detergent is sufficiently permeated into the laundry, so that the so-called cloth damage can be further prevented and the cleaning effect can be improved. .

Furthermore, since the agitating member 70 has a ridge 71 which is inclined rearward with respect to one rotation direction, and the agitating member 70 is intermittently rotated only in the one rotation direction, the agitation is performed. The water flow generated by the body 70 always flows toward the rectifying rib portion 68, and the water can be guided to the water passage hole 69 more favorably.

Further, in the washing process, the stirring member 70 is used.
Since the rotation speed is set to be low at the initial stage and then increased at the beginning of one drive period, it is possible to prevent a sudden load from being applied to the motor 22 that drives the stirring body 70, and the water flow is gradually increased. Since it becomes stronger, it is possible to prevent cloth damage and the like as compared with the case where the water flow suddenly becomes stronger from the beginning.

In the seventh embodiment, the stirring body 70 may be rotated in the forward and reverse directions. In this case, different water flows are generated in the forward and reverse rotations. The same effect as that of the embodiment described above is obtained, and when rotating in the reverse direction, the strength of the water flow from the lower portion of the plate-shaped member 61 to the upper portion is slightly weakened.

28 and 29 show an eighth embodiment of the present invention. In this embodiment, the shapes of the straightening rib portion 81 and the water passage hole 82 are different from those of the seventh embodiment.
That is, the straightening rib portion 81 is formed in a vertical plate shape, and the water passage hole 82 is formed in a circular shape. Even with this,
The action of rectifying the water flow can be obtained, and the water in the lower portion of the plate-shaped member 61 can be made to flow upward from the water holes 82. In this case, the plate member 61 and the rectifying rib portion 8
When 1 and 1 are integrally molded, the shape of the mold becomes simple and the mold can be easily removed.

[0048]

As apparent from the above description, the present invention has the following effects. According to the invention of claim 1, it is possible to prevent the laundry from coming into contact with the agitator by the plate-shaped member, and moreover, let the water in the lower portion of the plate-shaped member flow out to the upper side of the plate-shaped member through the water passage. It can be dropped onto the laundry, so that the laundry made of delicate material can be washed well without being damaged. Moreover, since the above water passage can be formed with a simple structure such as forming a notch in the plate-like member, there is no need to form a separate water passage in the washing tank for pumping water and returning it back into the washing tank. In addition, the structure is extremely simple, the size can be reduced, and the cost can be reduced.

According to the second aspect of the invention, since the stepped portion for holding the plate-shaped member is provided on the inner peripheral portion of the washing tank, and the rotation preventing portion is provided on this stepped portion, the plate-shaped member is prevented from rotating. Can keep good condition. According to the invention of claim 3, the washing tub has an inner tub body on the inner surface side of the tub body, and a bottom cover is connected to a lower portion of the inner tub body. Since there is a step on the plate and the plate-shaped member is held on this step, the step existing in the washing tank can be used for holding the plate-shaped member, and the step does not have to be formed. It is possible to simplify the configuration.

According to the fourth aspect of the present invention, since the plate-shaped member is constructed by connecting the two unit members by the rotatable connecting member, one unit member does not contact the laundry with the agitator. The other unit member can prevent the loading posture of the laundry from being collapsed or lifted.

According to the invention of claim 5, since the plate member is made of a flexible material, and the wall thickness of the outer peripheral portion is made thicker and the wall thickness of the portion other than the outer peripheral portion is made thin, the plate member has a fixed shape. It is expected that the plate-shaped member can be flexibly deformed while maintaining the property, and that it can be expected to have a stretching effect on the laundry and an improved cleaning effect.

According to the sixth aspect of the present invention, since the plurality of circular ribs are concentrically formed on the portion other than the outer peripheral portion of the plate-shaped member, the plate-shaped member does not bend in the twisting direction and the vertical direction Therefore, it is possible to flexibly deform, and thus the placement posture of the laundry on the plate-shaped member is not greatly deteriorated.

According to the invention of claim 7, since the peripheral portion of the plate-shaped member is formed in such a shape as to abut against the inner surface of the washing tank, and a plurality of water passages are formed in the vicinity of the peripheral portion, the plate-shaped member is formed. The water in the lower part of the member can be made to flow to the upper side of the plate-shaped member through the water passage and be dropped on the laundry, so that the laundry can be washed well without damage to the cloth. Moreover, since the water passage can be formed with a simple structure such that the water passage is formed in the plate-shaped member, it is not necessary to form a water passage in the washing tank for pumping water and returning the water to the rotary tank 4. The configuration is extremely simple, and the size can be reduced, and the cost can be reduced.

According to the eighth aspect of the present invention, since a large number of water passage holes are formed in the plate member and the rectifying rib portion is formed on the lower surface, the water flow generated in the lower portion of the plate member is rectified. The water can be guided to the water passage and the water can be caused to flow upward through the water passage, so that the washing effect on the laundry can be further enhanced.

According to the ninth aspect of the invention, since the straightening rib portion is formed in a vertical plate shape, the die shape can be simplified when the plate member and the straightening rib portion are integrally molded. Die cutting becomes easy.

According to the tenth aspect of the invention, since the rectifying rib portion is formed so that the base end portion is vertical and the tip end portion is curved, the water below the plate-shaped member can pass through better. You will be able to guide to the water hole.

According to the eleventh aspect of the present invention, the operation control means performs the washing step of intermittently rotating the agitating body for a predetermined time, and then performs the sprinkling step in which the agitating body is stopped for the predetermined time. Therefore, the water containing the detergent is sufficiently permeated into the laundry, and it is possible to improve the cleaning effect while further preventing the cloth from being damaged.

According to the twelfth aspect of the present invention, the agitator has a ridge that is inclined rearward with respect to one rotation direction, and the operation control means causes the agitation body to move in the one rotation direction only during the washing process. Since it is driven to rotate intermittently, the water flow generated by the agitator always flows toward the rectifying rib portion side, and the water can be guided to the water passage hole more favorably.

According to the thirteenth aspect of the present invention, the operation control means, in the washing process, lowers the rotational speed of the agitator at the beginning of one drive period and then increases the rotational speed of the agitator. It is possible to prevent a sudden load from being applied to the motor that drives the body, and it is possible to prevent cloth damage and the like as compared with the case where the water flow suddenly becomes strong from the beginning because the water flow gradually becomes stronger.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional side view of a main part of a rotary tank.

FIG. 3 is a perspective view of the same.

[Fig. 4] Vertical side view of the water passage.

FIG. 5 is a vertical sectional side view of a step portion.

FIG. 6 is a plan view of a plate member.

[Fig. 7] Side view of the same section

FIG. 8 is a block diagram showing an electrical configuration.

FIG. 9 is a vertical sectional side view of a washing machine showing a second embodiment of the present invention.

FIG. 10 is a plan view of a plate member.

FIG. 11 is a vertical sectional side view of a hinge portion.

FIG. 12 is a plan view of a plate-like member showing a third embodiment of the present invention.

FIG. 13 is a plan view of a plate-like member showing a fourth embodiment of the present invention.

FIG. 14 is a plan view of a plate-like member showing a fifth embodiment of the present invention.

FIG. 15 is a plan view of a plate-like member showing a sixth embodiment of the present invention.

FIG. 16 is a vertical sectional side view of a washing machine showing a seventh embodiment of the present invention.

FIG. 17 is a plan view of a plate member.

FIG. 18 is a bottom view of the plate member.

FIG. 19 is a vertical sectional side view of a rectifying rib portion.

FIG. 20 is a perspective view of the main part of the rotary tank.

FIG. 21 is a plan view of the stirring body.

FIG. 22 is a cross-sectional plan view showing a state where the suppression plate is held by the inner tank body.

FIG. 23 is a vertical sectional side view of a held portion.

FIG. 24 is a time chart showing the control contents at low water level.

FIG. 25 is a time chart showing the control contents when the water level is medium.

FIG. 26 is a time chart showing the control contents at high water level.

FIG. 27 is a view showing an intermittent mode of a stirring body.

FIG. 28 is a bottom view of the plate-like member showing the eighth embodiment of the present invention.

FIG. 29 is a vertical sectional side view of a rectifying rib portion.

[Explanation of symbols]

4 is a rotating tank (washing tank), 6 is a tank body, 7 is an inner tank body, 8 is a bottom cover, 9 is a stepped portion, 11 is a rotation stopping portion, 13 is a protruding portion, 30 is a control circuit, and 36 is a plate shape. A member, 37 is a notched portion, 38 is a rib, 39 is a water passage hole, 40 is a water passage, 41 is a plate member, 42 and 43 are unit members, 44 is a connecting member, 5
1 is a plate member, 52 is a water passage port, 61 is a plate member, 62,
63 is a unit member, 65 is a notched portion, 68 is a rectifying rib portion, 69 is a water passage hole, 70 is a stirring body, 71 is a raised portion, 72
Is a restraint plate, 79 is a held portion, 80 is a convex portion, 81 is a rectifying rib portion, and 82 is a water passage hole.

Claims (13)

[Claims] 1. A washing tub having an agitator at an inner bottom thereof, and a washing tub disposed in a substantially horizontal position above the agitator in the washing tub to prevent laundry from coming into contact with the agitator. And a plate-shaped member for making the plate-shaped member, a part of the periphery of the plate-shaped member has a cutout shape,
The notched portion is formed so as to be separated from the inner surface of the washing tank, and the peripheral edge portion excluding the notched portion is in contact with the inner surface of the washing tank with almost no gap. A washing machine characterized in that a water passage is formed by a gap between the inner peripheral surface of the washing machine. 2. The washing machine according to claim 1, wherein a step portion for holding the plate-shaped member is provided on an inner peripheral portion of the washing tub, and a rotation stop portion is provided on the step portion. . 3. The washing tub has an inner tub body on the inner surface side of the tub body, and a bottom cover is connected to a lower portion of the inner tub body, and the inner tub body and the bottom cover have stepped portions. Yes,
The washing machine according to claim 2, wherein a plate-shaped member is held on the step portion. 4. The washing machine according to claim 1, wherein the plate-shaped member has a structure in which two unit members are connected by a rotatable connecting member. 5. The washing machine according to claim 1, wherein the plate-shaped member is made of a flexible material and has a thicker outer peripheral portion and a thinner outer peripheral portion. 6. The washing machine according to claim 5, wherein the plate-shaped member has a plurality of circular ribs formed concentrically on a portion other than the outer peripheral portion. 7. A washing tub having an agitator at the inner bottom, and a washing tub disposed in a substantially horizontal position above the agitator in the washing tub to prevent laundry from coming into contact with the agitator. And a plate-shaped member for forming the plate-shaped member, wherein the plate-shaped member is formed in a shape in which the peripheral edge portion abuts the inner surface of the washing tank, and a plurality of water passages are formed in the vicinity of the peripheral edge portion. And a washing machine. 8. The washing machine according to claim 1, wherein the plate-shaped member is provided with a large number of water passage holes, and the lower surface is provided with a rectifying rib portion. 9. The washing machine according to claim 8, wherein the straightening rib portion is formed in a vertical plate shape. 10. The washing machine according to claim 8, wherein the straightening rib portion has a base end portion having a vertical shape and a tip end portion having a curved shape. 11. An operation control means is provided, wherein the operation control means performs a washing step of intermittently rotating the agitating body for a predetermined time, and then carries out a soaking step in which the agitating body is stopped for a predetermined time. The washing machine according to claim 1 or 7, characterized in that: 12. The stirrer is configured to have a raised portion that is inclined rearward with respect to one rotation direction, and the operation control means intermittently drives the stirrer to rotate only in the one rotation direction in the washing process. The washing machine according to claim 11, wherein the washing machine is configured as follows. 13. The operation control means, in the washing process,
13. The washing machine according to claim 12, wherein the stirring body is configured to have a low rotation speed at an initial stage and a high rotation speed after a single driving period.