JPS5910239B2 - washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a washing tank equipped with a pulsator, a dehydration tank built into the water receiving tank, and a water supply channel switching device capable of selectively supplying tap water to the washing tank or the dehydration tank. This invention relates to a tank-type washing machine, and in particular to one in which a water supply electromagnetic valve is provided between a water supply channel switching device and a water faucet to improve operability when switching water supply to the washing tank and the dewatering tank.

Conventionally, with respect to washing machines equipped with the water supply solenoid valve and water supply channel switching device, a water supply channel switching device is rotatably attached to a part of the water supply solenoid valve, for example, as in Japanese Patent Publication No. 54-7158, and its discharge port is It was common practice to supply water to the washing tank or dehydration tank by rotating the switch directly using a switching lever.

In this type of system, there have been problems such as water entering through the opening that guides the operation of the switching lever and hitting the control switch of the water supply solenoid valve, resulting in electrical leakage.

In addition, the switching lever can be used to directly rotate the discharge port of the water supply channel switching device left and right to the dehydration tank side or the washing tank side, and the switch of the water supply solenoid valve can also be turned ON and OFF.
During the dissociation stroke leading to F, the outlet itself must also be able to rotate by a considerable amount.

For this reason, for example, if you are supplying water to the washing tank and want to switch it to the dehydration tank, if you move the switching lever quickly, the switch will turn OFF, and by the time the water supply solenoid valve closes and the water supply stops, the discharge port itself will also open. When the machine moves, the water drips and gets wet on the top of the washing machine.

Also, when you want to close the water supply solenoid valve and stop the water supply itself, you have to move the switching lever near the center.
At this time, the remaining water in the pipe will drip onto the top of the washing tank.

The present invention has been made to solve the above-mentioned conventional problems.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is a washing machine main body, 2 is a washing tank installed in the main body 1, and a pulsator 3 is equipped at the bottom.

4 is a water receiving tank installed in parallel with the washing tank 2, and a dehydration tank 5 is installed inside.

Reference numeral 6 denotes a panel section provided at the rear of the upper part of the main body 1, which includes a knob 7a of the washing time switch 7 and a cock switching mechanism 8.
, a knob 52 of a switch 50 for controlling a water supply solenoid valve, a knob 10a of a dehydration time switch 10, and various other electrical components are built-in.

11 is a water faucet 12 is an inlet joint of a water supply solenoid valve 30 built in the panel part 6, and 12 and 30 are pressure hoses 1.
4 is connected.

Further, reference numeral 15 indicates a washing side outlet, and 16 indicates a dewatering side outlet, which respectively serve as a washing side outlet or a dewatering side outlet of the water supply channel switching device 44 built in the panel section 6.

FIG. 3 shows a cross section A-A' in FIG.

The panel part 6 is formed of a panel box 40 and a panel 41, and the water guiding guide 4 is built into the panel part 6.
2, the water is guided to the washing tank 2 side and discharged from the washing side discharge port 15, or the water supply is guided to the dehydration tank 5 side and discharged from the dewatering side discharge port 16. There is.

A chevron-shaped partition portion 43 is formed in the middle of this water guiding guide 42 to serve as a water divider.

A water supply channel switching nozzle 44 rotatably supported on the center of the partition portion 43 is provided, and the discharge port 31 of the water supply solenoid valve 30 fixed to the upper panel box 40 is connected to the water supply channel switching nozzle 44. It opens at the top of the mouth.

45 indicates a rotating pin of the water supply channel switching nozzle. An arm 46 is integrally formed at one end of the rotating pin 45, and as the arm 46 is swung left and right, the water supply channel switching nozzle 44 is also swung left and right as a unit, passing through the water supply solenoid valve 30. The water flowing down from the discharge port 31 is guided in the direction in which the water supply channel switching nozzle 44 is inclined and flows out.

Here, the arm 46 that operates the water supply channel switching nozzle 44 is configured such that it cannot be directly operated from the outside.

On the other hand, on the surface of the panel 41, the ON/OFF information of the water supply solenoid valve 30 is displayed.
A switch 50 that controls the operation is fixed and rotatably supported by the panel 41.

A cam 51 and a knob 52 for operating the cam 51 are provided.

According to each setting position of this knob 52, the cam 5
1 rotates, and the switch 50 is turned on and off in a predetermined manner.

Here, an arm 53 is integrally formed on this cam 51, and this arm 53 and the arm 46 of the water supply channel switching nozzle 44 are connected by a flexible elastic body, for example, a tension spring 54.

As shown in FIG. 7, the switch 50 has a two-pole structure, and the other terminal of the switch 50 is electrically connected to the washing timer 7. >, the cam 51 rotates together with this, and the solenoid valve 30 is connected to the timer 50.

To explain the operation in the above configuration, as shown in FIG. 5, when the knob 52 is adjusted to supply water to the washing tank, stop water supply, and supply water to the dewatering tank, the switch 50 of the water supply solenoid valve 30 and the water supply solenoid valve 30 are activated. The water supply channel switching nozzle 44 of the water supply channel switching device operates as shown in FIG.

That is, when the knob 52 is adjusted to the water supply to the washing tank, this and 1
The cam 51 rotates on the body and the switch 50 is turned on.

This opens the water supply solenoid valve 30 and allows tap water to flow.

At the same time, as shown in FIG.
The water flowing down from the solenoid valve 30 is bent to the left as shown by the arrow, as shown by the solid line in the figure.
The water passes through the water guiding guide 42, is discharged from the washing side outlet 15, and is poured into the washing tank.

Next, the cam 51 rotates at the same time as the knob 52 is set to <water supply stop>, the switch 50 is turned off, and the water supply solenoid valve 30 is closed.

At this time, the arm 53 naturally rotates as the cam 51 rotates, but since the arm 46 of the water supply channel switching nozzle 44 is connected via a tension spring 54, sufficient torque is applied to the arm 46. The applied horizontal component force does not work, and the spring only contracts, so that the water supply channel switching nozzle 44 maintains its position.

Therefore, in the switching process of the knob 52, and before it is set to <Water supply stop>, there will naturally be some dripping of water accumulated in the pipe due to the operating range of the switch and the delay in closing the water supply solenoid valve. Flows only into the washing tank, so there is no need to worry about it leaking into the dehydration tank.

Therefore, even if the knob 52 is switched when the dehydration tank contains cloth that has been dehydrated, there is no need to worry about getting the clothes wet.

Furthermore, when the knob 52 is set to <Dehydration tank water supply>, the cam 51 rotates, the switch 50 turns ON and the water supply solenoid valve 30 opens again, and at the same time the arm 53 also moves, but horizontally with respect to the arm 46. Since it will be a major move,
The tension spring 54 is stretched, and the arm 46 momentarily moves to the left as indicated by the dotted arrow in FIG. 4, so that the supplied water is guided toward the dehydration tank.

Conversely, even if the knob 52 is turned, the above-mentioned reverse operation is reliably performed.

Furthermore, by adopting the wiring configuration shown in FIG.
If you set the knob 52 to <Water supply automatic stop>,
Along with this, the cam 51 rotates, and the water supply solenoid valve 30 is electrically connected to the wash timer 7.

At this time, if you turn wash timer 7, wash timer 7
During the opening time, the water supply solenoid valve 30 is opened, and at the same time, the washing motor 54 is also turned on.

Thereafter, when the wash timer 7 is turned off, the water supply solenoid valve 30 and the wash motor 54 are also closed and turned off at the same time.

Of course, when the knob 52 is at the set position (thus water supply automatic stop), the water supply channel switching nozzle 44 is in a state of supplying water to the washing tank side.

FIG. 9 shows the operating states of the water supply solenoid valve switch 50, the water supply solenoid valve 30, and the water supply channel switching device 44 in this state.

As described above, according to the present invention, the water supply channel switching device that selectively guides the tap water flowing down from the water supply solenoid valve to the washing tank or the dehydration tank is built into the panel part, and the water channel is switched internally, making it watertight. Since this method uses a water guiding body to guide the water to fixed outlets at left and right positions, compared to the conventional method of moving the water outlet itself from side to side, water is less likely to splash out during the process of cutting the water supply channel. There is no need to worry about getting the top of the washing machine or floor wet.

If you use the water supply automatic stop function when rinsing, there will be no need to continue supplying water without knowing that the wash timer has run out.

In addition, the system of the water supply channel switching device simply receives the water flowing down the outlet of the water supply solenoid valve with a tapered nozzle and bends the flow to the left or right, so there is no strain on the water flow. Since there is no increase in flow resistance, there is no need to worry about the connection of the pressure hose coming off due to water leakage during switching or an increase in internal pressure due to increased flow resistance.

In addition, the biggest problem with this type of switching device is that when switching from the washing tank side water supply to stopping the water supply, or from the dehydration tank side water supply to stopping the water supply, due to the timing difference between the switch operation and the switching of the water supply channel, the opposite side Water leaks into the water supply channel.

For example, if water leaks into the spin-drying tank when switching from water supply to washing tank water supply to stop water supply, there is a problem that the water will boil over clothes that have already been spin-dried. Since it is operated via a flexible elastic body, this problem is completely prevented by timing the system so that when the water supply is stopped, the water supply channel remains as it is without being switched.

Furthermore, since the switch is fixed to the panel surface and operated by a rotary cam that is easy to seal with water, there is no risk of electrical leakage no matter how much water gets on the panel surface.

Further, since operations are performed using knobs on the panel surface, it has the advantage of being easy to operate and easy to read the display, and it is also possible to easily design the other knobs on the panel surface in a unified manner, thereby improving the product value.

As described above, the present invention solves all of the drawbacks of the conventional water supply channel switching system, and provides a configuration that exhibits excellent effects and at the same time provides a significant water saving effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a two-tank washing machine equipped with a water supply solenoid valve and a water supply channel switching mechanism, showing one embodiment of the present invention, and FIG.
Figure 3 is a partial cross-section of Figure 1 (A
A' cross-section), Figure 4 is a sectional view of the water supply switching mechanism of the panel section in Figure 2 seen from the front, Figure 5 is a rotational movement diagram of the water supply switching knob, and Figure 6 is a diagram of the setting position of the knob. Figure 7 shows the operation of the water supply solenoid valve switch, water supply solenoid valve, and water supply channel switching device, Figure 7 is a wiring diagram of the present invention, Figure 8 is an operation diagram of the knob and wash timer when the water supply is automatically stopped,
FIG. 9 shows the operating states of the solenoid valve switch, solenoid valve, and switching device when the water supply is automatically stopped. 30... Water supply solenoid valve, 44... Water supply channel switching nozzle, 50... Water supply solenoid valve switch, 5
2...Curved water supply switching knob, 54...Switching cam,
54...washing motor, 55...dehydration motor.

Claims (1)

[Claims] 1. A washing tank equipped with a pulsator, a dehydration tank built into a water receiving tank, a water supply channel switching device that can selectively supply tap water to the washing tank or the dehydration tank, the water supply channel switching device and the Eimichi faucet. A water supply solenoid valve is provided between the water supply solenoid valve and the water supply solenoid valve, and the water supply solenoid valve is controlled to be turned ON and OFF by operating a knob using a select switch provided on the panel surface, and the water supply channel switching device is installed in the panel box. The select switch and the water supply channel switching device are connected by a flexible elastic body, and the water supply channel switching device is built in in conjunction with operation by the knob of the select switch. is operated, and an automatic water supply stop step is provided during the knob switching step,
A washing machine characterized in that the washing timer and the water supply solenoid valve are connected in series so that the opening time of the water supply solenoid valve is controlled by the washing timer.