JPS636237B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a washing machine mainly used at home.

(b) Prior art In conventional washing machines, especially those that automatically perform each process such as water supply, washing, draining, and rinsing, when trying to clean the inside of the washing tub, you can pour water into a bucket or the like and use the water. It was a hassle to wash the laundry tub, or to use a hose to pour water into the laundry tub from another faucet. In addition, even in washing machines that have a water tank in addition to the washing tank to store used liquid in the washing tank for reuse, cleaning the water tank is still troublesome in the same way as described above.

(C) Object of the Invention An object of the present invention is to provide a washing machine that can easily clean the washing tub and water tank by using a water supply box that supplies water to the washing tub.

(D) Structure of the Invention The present invention has a water supply pipe that projects into the water supply box through which water from a faucet passes from the rear wall of the water supply box whose front face is open toward the interior of the washing tub, and the tip of the water supply pipe. In addition to providing a collision wall that catches the water in the pipe and changes its direction,
An opening is formed through which the water diverted by the collision wall is discharged into the water supply box, and when an external hose is inserted into the outer peripheral surface of the water supply pipe so as to cover this opening,
A water passage communicating between the opening and the inside of the external hose is formed between the inner circumferential surface of the external hose and the outer circumferential surface of the water supply pipe.

With this configuration, when the external hose is not inserted into the outer peripheral surface of the water supply pipe, the water in the water supply pipe is discharged from the above opening into the water supply box, and is poured into the washing tub from the front opening of the water supply box, and the water from the external hose is discharged into the water supply box through the opening. When the water supply pipe is inserted, the water in the water supply pipe is discharged from the opening and the water passage into the external hose, and the washing tub or water storage tank can be easily cleaned using the external hose.

(e) Example As an example, an automatic washing machine with a water storage tank is shown. 1 is a frame of the main body of the washing machine, and an outer tank 2 is suspended from the upper part of the frame 1 by a plurality of hanging rods 3 in a vibration-proof manner. has been done. Inside the outer tub 2, there is provided a washing tub 5 which also serves as a dehydration tub and has a large number of dehydration holes 4 in its peripheral wall, and a rotary blade 6 is disposed at the center of the bottom of the washing tub 5. At the bottom of the outer tub 2, there are rotating blades 6 for washing.
A drive motor 7 that rotates the washing tub 5 during dewatering and a bearing case 8 are installed, and a drain port 9 is provided, and the drain port 9 is connected to a drain electromagnetic valve that opens when excited. It is communicated with the outside of the machine via a valve 10 and a drainage hose 11. 14 is a water supply device that supplies water to the washing tub 5, which is a feature of the present invention, which will be described later.

Reference numeral 15 denotes a water tank made of synthetic resin in the shape of a rectangular parallelepiped, and is composed of a main body 16 and legs 17, and one side of the main body 16 of this water tank 15 is joined to the side of the frame 1 of the washing machine main body. It is attached to frame 1. A top plate 23 made of synthetic resin is attached to the upper ends of the frame 1 and the water tank 15 to create a sense of unity between the frame 1 and the water tank 15.
It improves the appearance. 24 is a lid of the washing machine that opens and closes the clothes input port 25 formed on the top plate 23, 26 is a lid that closes the upper opening of the water tank 15, and 27 is a control box provided at the rear of the top of the washing machine body.

A reversible pump 29 driven by a motor 28 is attached to the bottom of the water tank body 16.
This reversible pump 29 has two flow ports, which function as a suction port or a discharge port depending on the direction of rotation, and one of the flow ports (not shown) is opened to communicate with the bottom surface of the water tank body 16. , the other flow port 30 communicates with the drain port 9 of the outer tank via a communication path 31. The connecting passage 31 is provided with a connecting valve 32 that opens and closes the passage.

Therefore, when transferring the used washing liquid or rinse water in the washing tub 5 to the water storage tank 15, the connection valve 32 is opened and the reversible pump 29 is rotated in one direction on the condition that there is no liquid in the water storage tank 15. . Then, the liquid in the washing tub 5 moves to the water storage tank 15 through the connecting path 31. On the other hand, when reusing the liquid in the water storage tank 15, the connecting valve 32 is opened and the reversible pump 29 is rotated in the other direction on the condition that there is liquid in the water storage tank 15.
The liquid in 5 is transferred to the washing tub 5 via the connecting path 31.

Next, we will discuss the second feature of the water supply device, which is a feature of the present invention.
This will be explained in detail based on FIGS. 4 to 4. The control box 27
The bottom wall 40 is integrally molded with the top plate 23, and a recess 41 with an open bottom is formed in the front side of the bottom wall 40, and a water supply box 42 made of synthetic resin is installed in this recess 41. ing. The front surface of the water supply box 42 is open toward the washing tub 5, and a water supply pipe 44 protruding into the water supply box 42 is integrally molded on the rear wall 43.
A water supply channel 45 is connected to the rear end of the water supply pipe 44, and this water supply channel 45 is connected to a water faucet via a water supply electromagnetic valve. The tip of the water supply pipe 44 is a small diameter section 46, and within this small diameter section 46 is formed a collision wall 47 that receives water flowing through the water supply pipe 44 and changes its direction outward. .
At the tip of the large diameter portion 48 of the water supply pipe 44, there is an opening 49 for discharging water that collided with the collision wall 47 and was deflected outward into the water supply box 42.
There are several. This opening 49 is the small diameter portion 4
It communicates with the outer peripheral surface of 6. A plurality of guide ribs 50 are integrally molded on the outer peripheral surface of the small diameter portion 46 and extend in the axial direction of the water supply pipe 44 continuously with the outer peripheral surface of the large diameter portion 48 . The tip of this guide rib 50 is rounded as shown in FIG.

A hose insertion port 52 that is concentric with the water supply pipe 44 and has a larger diameter than the large diameter portion 48 is formed on the wall surface 51 of the recess 41 facing the front opening of the water supply box 42. Connect the external hose 53 to the large diameter portion 48 as shown by the dashed line in FIG.
It can be fitted onto the outer peripheral surface of the opening 49 so as to cover the opening 49. At this time, the guide ribs 50 are in contact with the inner circumferential surface of the hose 53, thereby securing a water passage 54 between the small diameter portion 46 and the inner circumferential surface of the hose 53, which communicates the opening 49 with the inside of the hose.

In such a configuration, if the external hose 53 is not inserted into the water supply pipe 44, the water flowing inside the water supply pipe 44 will collide with the collision wall 47 and change its direction outward, as shown by the solid line arrow in FIG. The water is discharged from the opening 49 into the water supply box 42, and the discharged water is rectified by a number of bottles 55 protruding from the rear wall of the water supply box 42, and is poured into the washing tub 5 from the front opening of the water supply box. I can escape. It is in this state when the washing machine is in use.

When cleaning the washing tub 5 and water storage tank 15, open the water supply solenoid valve, open the drain solenoid valve 10 and the connection valve 32, and insert the external hose 53 into the water supply pipe 44 as shown by the dashed line in FIG. . Then, the water that has flowed through the water supply pipe 44 and collided with the collision wall 47 flows into the hose 53 from the opening 49 through the water passage 54 as indicated by the dotted arrow. Therefore, the washing tub 5 and the water tank 15 can also be cleaned with this hose 53. At this time, the hose 53 is prevented from being excessively bent by the hose insertion port 52, and excessive force is not applied to the insertion portion of the hose 53 into the water supply pipe 44 due to extreme bending. Moreover, the guide rib 50 reliably secures the water passage 54 between the hose 53 and the small diameter portion 46, allowing good water circulation.

In this way, cleaning can be done easily by simply inserting the external hose 53 into the water supply pipe 44, and there is no need to use a hose to get water from other taps or use a bucket. And this hose can be short.

FIG. 5 shows another embodiment of the water supply box 42, in which there is no guide rib on the outer peripheral surface of the small diameter portion 46 of the water supply pipe 44. In something like this,
Although it is somewhat difficult to insert the external hose into the large diameter section 48 of the water supply pipe, the stepped surface between the large diameter section 48 and the small diameter section 46 prevents a hose with a small diameter from being forcibly inserted by mistake.

(F) Effects of the Invention According to the present invention, the washing tub and the water tank can be easily cleaned by simply inserting an external hose into the water supply pipe in the water supply box that supplies water to the washing tub.

[Brief explanation of the drawing]

The drawings show the present invention, and FIG. 1 is a front vertical sectional view of a washing machine with a water storage tank, FIG. 2 is a perspective view of the main parts, FIG. 3 is a sectional view taken along the line in FIG. 2, and FIG. 4 is a water supply. A perspective view of the box, and FIG. 5 is a perspective view of another embodiment. 5...Washing tub, 42...Water supply box, 43...
... Rear wall, 44 ... Water supply pipe, 47 ... Collision wall, 49 ... Opening, 53 ... External hose, 54 ...
...Water passage, 27...Control box, 40...Bottom wall, 41
... recess, 51 ... wall surface, 52 ... hose insertion port.

Claims (1)

[Scope of Claims] 1. A water supply pipe through which water from a water faucet passes is made to protrude into the water supply box from the rear wall of the water supply box whose front face is open toward the interior of the washing tub, and a water supply pipe is provided at the tip of the water supply pipe. A collision wall that receives water in the pipe and changes its direction is provided, and an opening is formed through which the water diverted by the collision wall is discharged into the water supply box, and the opening is formed on the outer peripheral surface of the water supply pipe. A water supply device for a washing machine, wherein when an external hose is inserted so as to cover the external hose, a water passage is formed between the inner circumferential surface of the external hose and the outer circumferential surface of the water supply pipe to communicate the opening and the inside of the external hose. . 2. Installing the water supply box in a lower open recess formed on the back side of the bottom wall of the washing machine control box,
2. The water supply device for a washing machine according to claim 1, wherein a wall surface of the recess facing the front surface of the water supply box is provided with a hose insertion port concentric with the water supply pipe through which the external hose passes.