JPH08141280A - Fully automatic washing machine - Google Patents

Abstract

PURPOSE: To smoothly discharge overflow water and prevent water drops from jumping on floor to deposit on a charging section by forming an abnormal overflow water opening on an outer tank, connecting a flexible tube to the opening, and specifying distance between the tip of the tube and the floor. CONSTITUTION: Energizing a motor 20 operates a clutch 14 via a pulley 17, a V-belt 16 and a pulley 15, and rotates stirring blades to perform washing. Energizing a drain valve 12 thereafter drains washing liquid outside the washing machine from a drain hose 13. In this case, an abnormal overflow water opening 24 formed on an outer tank 2 is connected with a flexible tube 29, which is fixed at the lower edge of an outer tank 4 by a hardware 30. When abnormal water overflow occurs, the overflown water is discharged to a floor surface 27 from the abnormal overflow water opening 24 on the outer tank 2 via the tube 29. In order to prevent the overflown water discharged onto the floor surface 27 from jumping on the floor and deposit onto a charging section for electric components at this time, the distance H between the tip of the tube 29 and the floor surface 27 is specified to less than 100mm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine,
The present invention relates to prevention of splashing of water to the charging part of an electric component in an abnormal water supply state such as continuous water supply due to a failure of a water supply control device or the like.

[0002]

2. Description of the Related Art In a fully automatic washing machine, when the water supply control mechanism fails and the water continuously supplied from the drain passage from the drain hose is not drained, the continuously supplied water is The structure is such that it overflows from the outer tank cover provided on the upper part of the outer tank or is discharged to a specific position from a special abnormal overflow port provided on the upper part of the outer tank. The abnormal hose can be guided to the floor with a special hose.
Proposed as 168494.

However, there is a problem in discharging the water continuously supplied by the conventional method without damaging the electric parts, and depending on product variations, the water is discharged to the charging part of the electric parts. There was a problem that water was splashed, insulation was lowered, and an electric shock was generated. Even if the discharged water does not directly reach the charging parts of the electrical parts, the water flowing out from the abnormal overflow port provided in the outer tub or the like to the floor surface bounces off the floor surface and becomes the charging parts of the electrical parts. Water droplets also adhered, causing a decrease in insulation.

As another conventional technique, a motor is completely molded with a plastic material, a fully closed motor is used, or a completely sealed system is used to prevent water droplets from adhering to a connector and a terminal connected to a power source. The cost was high and mass production had a major drawback.

[0005]

DISCLOSURE OF THE INVENTION The present invention eliminates the drawbacks of the prior art, and even if the water supply control device or the like is out of order at a low cost and the water is continuously supplied, the floor overflows from the outer tank. This is to prevent the overflowed water that has flowed out on the surface from becoming water droplets and not affecting the charging parts of the electrical parts.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a water supply abnormality,
At the discharge part of the conventional abnormal overflow port, a flow passage is provided so that overflowed water will not be applied to the charging part of the electric component.
By arranging the lower end of the flow passage close to the floor surface, the overflow water is prevented from splashing from the floor surface to prevent water droplets from adhering to the charging part of the electric component.

[0007]

[Function] A device for forming a flow path is provided at the outlet of the dedicated abnormal overflow port such as an outer tank, and the distance between the discharge tip of the flow path and the floor surface is set to a distance within a height range where water splash does not occur. By doing so, it is possible to prevent water droplets from flowing into the charging part of the electric component during continuous water supply when the water supply is abnormal.

[0008]

The present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a fully automatic washing machine adopting the present invention, and its operation will be sequentially described with reference to FIG.

In the fully automatic washing machine, four hanging rods 5 are provided inside the outer frame 1 with a pushing spring 4 provided on the hanging rod 5, and an outer tub 2 is supported on the upper portion of the outer frame 1. ing. An inner tub 3 is provided inside the outer tub 2, and a stirring blade 7 for moving and washing clothes is provided on a central bottom surface of the inner tub 3. In addition, the inner wall of the inner tub 3 is dehydrated by the centrifugal force generated by the rotation of the inner tub 3 when the washing water and rinse water in the inner tub are drained to the outer tub 2 and when the water is dehydrated. A large number of holes 3a are provided.

On the bottom surface of the outer tub 2, a motor 20 which is a power source for moving clothes during washing, and a clutch mechanism 4 for switching the power source of the motor 20 when spinning and rotating the inner tub 3 are provided. The control drain valve 12 is provided for draining water during washing, rinsing, and dehydration.

The main components of the fully automatic washing machine will be described in more detail, and the operation of the fully automatic washing machine will be described.
At the upper part of the outer frame 1, there is a top cover 18 that covers the entire outer frame from the upper surface. The top cover 18 is provided with a control mechanism 19 for controlling washing conditions, a water supply valve 10, and a water level sensor 22. There is. First, after opening the lid 18a provided on the top cover 18 for clothes to be washed and putting the clothes into the inner tub 3, by turning on the switch provided in the control mechanism 19, the water supply valve 10 is energized to supply water. Through the water supply hose 11 connected to the faucet, the inner tank 3
The amount of water required for washing is supplied inside. The amount of water required for washing is detected by controlling the change in the air pressure in the air top 8 provided on the side wall of the bottom of the outer tub 2 through the tube 9 and controlling the specified amount of water by the displacement of the air pressure by the water level sensor 22. . When the specified water amount is reached, the power supply to the water supply valve 10 is automatically stopped and the water supply is stopped.

Next, when a prescribed amount of water required for washing enters the inner tub 3 and the outer tub 2, the motor 20 is driven and its rotation is transmitted from the pulley 17 attached to the motor 20 through the V belt 16. Pulley 1 attached to clutch 14
Transmit to 5. When washing, by operating the clutch 14,
Washing is performed by rotating the stirring blade 7 provided in the center of the inner tub 3 for moving clothes. After the washing is finished, the washing liquid is drained,
The operation of the motor 7 is stopped, and the drain valve 12 is energized to drain the drain hose 13 to the outside of the machine. After the drainage is finished, the drainage valve 12 is used to dehydrate the washing water contained in the clothes in the inner tub 3.
The motor 20 is driven while the power is supplied to. At this time, the clutch 14 is switched from the rotation of the stirring blade 7 to the rotation of the inner tank 3, and the rotation of the motor 7 is transmitted to the inner tank 3 to rotate the inner tank 3 at a high speed. By rotating the inner tub 3 at a high speed, the water in the clothes in the inner tub 3 is centrifugally dehydrated into the outer tub 2 through the dewatering holes 3a provided in the side wall of the inner tub 3 to drain the water. The dehydrated water is discharged from the unit 12 to the outside of the machine via the drain hose 13.

On the upper part of the inner tub 3, when clothes are dehydrated,
A balancer 6 is provided so that the inner tub 3 can rotate stably at a high speed, and water does not splash from the inner tub 3 and the outer tub 2 at the upper part of the outer tub 2 during washing, rinsing, and dehydration. Similarly, the outer tank cover 23 is provided.

In the series of operations, not only washing but also rinsing and dehydration are controlled in the same manner, and the process from washing to rinsing and dehydration is automatically performed.

Next, description will be made with reference to FIG. Water is supplied into the inner tub 3 by energizing the water supply valve 10 at the start of washing, but even if the water level sensor 22 malfunctions or the water supply valve 10 malfunctions or the like, the water supply valve reaches a prescribed amount necessary for washing. When the water supplied from 10 into the inner tub 3 is not stopped and is continuously supplied, the washing water surface 28 rises and the overflow port 25 for washing is used.
From the drainage hose 13 through the overflow hose 26 regardless of opening / closing control of the drainage valve.
When the fluid resistance of 6 and drain hose 13 becomes large,
When the drain hose 13 is hung on the outer frame 1 of the washing machine and cannot be discharged, a structure is provided for draining the water overflowing to a certain place from the abnormal overflow port 24 provided near the top of the outer tub 2. Has become. The height of the abnormal overflow port 24 is higher than that of the overflow port 25 at the time of washing, and the structure is such that water does not overflow from the abnormal overflow port 24 to the floor surface 27 in a normal state.

In this way, when the water supply cannot be stopped due to a failure of the water supply valve 10 or the like, the drainage port that stably flows out from the abnormal overflow port 24 provided in the upper part of the outer tub to a certain place is abnormally overflowed. In contrast to the mouth 24, the function of the overflow port 25 at the time of washing is that when the washing operation is performed by supplying water higher than the maximum water level due to the control variation of the water level sensor 22 at the time of washing, the overflow port 25 at the time of washing Therefore, it is intended to prevent the excess water from being discharged or the water splash due to the movement of the cloth during washing. In addition, by moving the stirring blade 7 during rinsing and moving clothes, the water supply valve 10 is energized to continuously supply water while rinsing overflow. The drain valve 12 serves as a bypass between the overflow hose 26 and the drain hose 13, and the rinse water is drained regardless of the valve operation of the drain valve 12. It is a thing.

FIG. 3 is an explanatory view of a flooding system different from the system of the abnormal flooding port 24 provided in the outer tank 2 of FIG.

In this overflow method, when the abnormal overflow port 24 as shown in FIG. 2 is not provided due to the structure of the outer tub 2, the outer tub also serves to prevent splashing of water or clothes on the upper part of the outer tub 2. A cover 23 is provided. When a cutout is provided in a part of the outer tub cover 23 and a tube 29 is connected to the outer tub cover 23, water is continuously supplied due to a failure of the water supply valve 10 as described in FIG. Tube 2 of cover 23
It is configured such that water overflowing from 9 to the inside of the outer frame 1 is discharged. These methods shown in FIGS. 2 and 3 are currently applied to commercialization. However, by discharging abnormally rising water and overflowing water to a certain position by these methods, electric components, that is, the motor 20 and It is possible to prevent a drop in insulation due to water droplets on those connection terminals and the like. However, it is not the situation that water droplets do not adhere to the charged parts of these electric parts,
Although water droplets adhere to the charging part, the current situation is that the insulation has not deteriorated. Therefore, when the water supply state cannot be controlled due to a failure of the water supply valve 10 or the like, an abnormal overflow port is provided in the outer tub 2 or the outer tub cover 23 to release the overflowed water to a certain place. However, in such a situation, even if the insulation resistance of each electrical component is secured,
Water that has flowed out to the floor, etc. bounces off the charging parts of these electrical parts, and water droplets at a level that does not cause insulation deterioration are attached to the charging parts, and insulation deterioration may occur over time. .

FIG. 4 is a diagram showing an embodiment of the present invention.

The water supply valve 10 and other components for controlling the water supply state do not stop the water supply, and are provided as a safety measure for continuously supplying the water. Although the conventional technique has been described with reference to FIGS. 2 and 3, in the conventional technique, when abnormal flooding occurs, the insulation deterioration of the electrical component is equal to or higher than the reference value (10
0 MΩ or more) is a dangerous situation because water splashes to the charged parts of electrical parts.

In the present invention, the tube 29 is connected to the abnormal overflow port 24 portion provided in the outer tub 2 described in FIG.
At the lower end of the tube 29, the tube 29 is fixed so that the tube 29 does not shake and is stable.
It is a method of stable release to 7. At this time, tube 2
The water that has overflowed from 9 to the floor surface 27 is discharged, but the discharged water splashes from the floor surface 27, and water droplets adhere to the charging parts of the electrical parts, causing insulation deterioration. It is necessary to secure the H dimension so that the water discharged from the floor surface 27 does not splash. The distance H between the tip of the tube 29 and the floor 27 needs to be 100 mm or less with respect to the floor when the outer tub of the washing machine is sufficiently filled with water. By setting the dimension H method to 100 mm or less, the water discharged from the tip of the pipe 29 to the floor surface 27 is
There is no danger of hitting 7 and splashing, and it is possible to prevent water droplets from adhering to the charging parts of electric parts.

FIG. 5 is a partial sectional view of the tip portion of the tube 29 when the distance H between the tip of the floor surface 27 and the floor surface 27 cannot be secured to be 100 mm or less due to the structure of the tube 29 in FIG. Is.

The water discharged from the tube 29 is collected on the floor surface 2
The impact to the floor surface 27 becomes high due to the drop of up to 7, and the water is splashed, and the water discharged from the tube 29 is not discharged in a certain situation but becomes a turbulent flow and is discharged to the floor surface 27. Therefore, water splashes on the floor surface 27 is also a cause. Therefore, the tip of the tube 29 from the floor surface 27 is 10
In the case of 0 mm or more, it is necessary to rectify the water discharged from the tip of the tube 29, and a rectifying net 31 with good water permeability is provided to rectify the water discharged to the tip of the tube 29. The net 31 is fixed by the cap 30 so as not to fall off during discharging. Like this
A rectifying net 31 or the like is provided at the tip of the pipe 29, and the pipe 2
When discharged from the tip of 9, the discharged water is rectified and dropped to the floor surface 27, so that water splash from the floor surface 27 can be prevented.

FIG. 6 is an application example of FIGS. 4 and 5. 4 and 5 show the tube 29 from the abnormal overflow port 24 of the outer tub 2.
Although it is guided to the floor surface 27 by the above-mentioned method, the space formed inside the outer tub 1 and outside the outer tub 2 is narrow, and the tube 29
It is an example figure in the case of the structure which cannot be attached to the abnormal overflow port 24 part. As described above, the structure in which the space between the outer tub 1 and the outer tub 2 cannot be secured is a bag-like product 32 made of synthetic resin or the like for overflowing water and having open ends as shown in FIG. FIG. 6 is an embodiment diagram of a method of discharging water to the floor surface 27 by using

A thin bag (for example, polyethylene) having open ends is attached to the outlet of the abnormal overflow port 24 of the outer tub 2 with a fixture 33. In a normal state where water does not overflow from the abnormal overflow port 24, the thin bag-like shape 32 has a thin thickness of 2 to 3 mm and can be attached in a narrow space between the outer frame 1 and the outer tub 2.

In addition, an abnormality occurs in the water supply state and it becomes impossible to control the water supply stop, the water is continuously supplied, the water overflows from the abnormal overflow port 24 provided in the outer tub 2, and the thin bag-like shape 32 is formed.
When it is guided to the floor 27 and discharged to the floor 27, this thin bag-like 3
2 is 2 to 3 mm in the normal state by passing water through it
The thickness of the inner diameter increases in accordance with the amount of water passing through it, and the water can be discharged to the floor surface 27 without any trouble. That is, unlike the tube 29 shown in FIG. 5, the thin bag-shaped overflow passage 32 has a thickness of about 2 to 3 mm when not normally used, and can be installed in a narrow space. There is a feature that does not obviate the fixed shape that forms the passage.

With respect to the length relationship of the thin bag-like shape 29, when the floor surface 27 is used as a reference, the H dimension is 100 mm or less and the length of the tip is an opening, or When the length is increased on the same surface as the surface 27, the maximum L dimension is set to 70 mm or less, so that the water overflowing from the abnormal overflow port 24 is discharged to a specific position without splashing on the floor surface 27. It becomes possible to do.

Therefore, it is possible to prevent the deterioration of insulation without water droplets adhering to the charging part of the electric component.

FIGS. 7 and 8 are application examples of FIGS. 4 and 6.

First, FIG. 7 is a partial cross-sectional view of a system in which the outer tank cover 23 covering the upper tank of the outer tank 2 is flooded. The outer tank cover 23 is provided with an overflow port 34, and the tube 2 formed of synthetic resin or the like in the overflow port 34.
9 is attached along the side surface of the outer tank 2 as a passage to the vicinity of the floor surface 27, or a bag-like object such as a tubular thin polyethylene having open ends at the ends described in FIG. 6 is attached to the floor surface. It is an embodiment figure of the method of leading to 27 and discharging overflowing water to the floor surface 27.

FIG. 8 and FIG. 9 are applications of the overflow port 25 at the time of washing described in FIG. 2. The overflow port is divided into two chambers, one of which is dedicated to the overflow port for washing and rinsing. It is explanatory drawing which dedicated the other one to the abnormal overflow port.

Here, the function of the overflow port 25 at the time of washing will be described. When the laundry is washed on the prescribed washing water surface (especially at a high water level) at the time of washing, the clothes are swirled by the stirring blade 7 at the time of washing. The washing water level between the outer tub 2 and the inner tub 3 rises with respect to the spiral movement of the clothes. The more soiled the clothes, the stronger the rotation of the stirring blade 7, so that the water surface thereof is prevented from rising and overflowing from the engaging portion between the outer tub 2 and the outer tub cover 23, flowing out to the floor surface 27 and wetting the floor surface. In addition, an overflow port 25 at the time of washing is provided for the purpose of preventing water splashing at the time of washing. The water overflowing from the overflow port 25 at the time of washing passes through the flow passage 26 and remains as it is regardless of the valve operation of the drain valve 12.
The structure is such that it is drained to the outside of the aircraft.

Further, at the time of rinsing, since the rinsing time is continuously supplied while moving the stirring blade 7, it also has a function of naturally draining the supplied water from the overflow port 25. The overflow 25 at the time of this washing is divided into 2 by the partition 25b.
It is divided into chambers, one of which is used as a room with an abnormal overflow port 25a, water is continuously supplied due to a failure of the water supply valve 10 and the water overflowing from the overflow port 25 at the time of washing causes clogging of the drain hose 13 on the way. In the situation where the drain hose 13 is leaning against the outer frame 1 and cannot be discharged from the drain hose 13 to the outside of the machine, the water level becomes higher than the overflow port 25 at the time of washing, and when reaching the abnormal overflow port 25a, from the abnormal overflow port 25a. Unnecessarily abnormally overflowing water is guided to the floor surface and discharged at a predetermined position on the floor surface 27 by a tube 29a or a bag-like member whose both ends are opened by the above-mentioned thin polyethylene or the like.

As described above, by discharging from a specific position, it is possible to discharge to a place where there are no electric parts, etc., and it is possible to secure safety because water drops do not splash on the charging part and insulation deterioration is not impaired. It is a thing.

[0035]

INDUSTRIAL APPLICABILITY According to the present invention, in a water supply control mechanism of a fully automatic washing machine, the water supply valve for controlling water supply and other sensors are out of order, so that it is impossible to control water supply stop and water is continuously supplied. In the case of 1, the water supplied from a specific place is discharged, and the water discharged from the floor rebounds, so that there is an effect of safety in that water drops are not attached to electric parts and the insulation deterioration is eliminated.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a fully automatic washing machine.

FIG. 2 is an explanatory diagram of an abnormal overflow from the outer tank.

FIG. 3 is an explanatory diagram of abnormal overflow from the outer tank cover.

FIG. 4 is an external view of an abnormal overflow structure.

FIG. 5 is a sectional view of an abnormal flood hose.

FIG. 6 is an external view of an abnormal flood structure.

FIG. 7 is an explanatory diagram of abnormal water overflow of the outer tank cover.

FIG. 8 is an explanatory diagram of a laundry overflow port and an abnormal overflow port.

FIG. 9 is an external view of a laundry overflow port and an abnormal overflow port.

[Explanation of symbols]

2 ... Outer tank, 23 ... Outer tank cover, 25 ... Abnormal overflow port, 27
… Floor, 29… tubular flow passage.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Arimura 1-1-1, Higashitaga-cho, Hitachi-shi, Ibaraki Hitachi Ltd. Electric Appliances Division Taga Headquarters

Claims (1)

[Claims] 1. An outer tub of a washing machine or a part of an outer tub cover,
An abnormal overflow port is provided, and a flow passage is provided to guide the water overflowing to this abnormal overflow outlet to the floor along the outer tank side wall, and the distance between the discharge tip of the flow passage and the floor surface. Is 100 mm or less, or the flow passage is composed of a flexible tube,
A fully automatic washing machine characterized in that its lower end has a length which is in contact with the floor surface or extends along the floor surface.