JPH08200519A - Open / close valve - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an opening / closing valve for a dehydration port that does not require power. [Structure] A valve 11 and a coil spring having a predetermined spring force for supporting the valve 11 are enclosed, and an opening / closing valve 15 provided in the side wall of a large number of small holes and opened in only one direction is provided as a dehydration port 1.
Since it is an on-off valve of 8, the spring force is 11
Since the centrifugal force generated by the valve 11 is not drained from the dehydration port, the centrifugal force generated by the valve 11 is superior to the spring force during the dehydration, and the coil spring 12 contracts.
Since 1 is separated from the dehydration port, the dehydration port 18 is opened, and the wash water is drained from the washing tub 16 through the multiple drainage ports provided in the opening / closing valve 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine provided with a washing basket which is rotationally driven by a drive motor, and more particularly to a drainage mechanism thereof.

[0002]

2. Description of the Related Art Conventionally, a large number of dehydration ports provided on the side wall of a washing basket are not attached with an opening / closing mechanism and are always open. For this purpose, the washing basket has a two-tank structure of an inner tank and an outer tank, the inner tank is provided with a dehydration port that is always open, and the outer tank is provided with a main drain port that can be opened and closed by electric power or the like. FIG. 4 shows a schematic cross-sectional view of this conventional cleaning basket. FIG.
In the figure, 41 is an inner tank of a cleaning basket having a large number of dehydration ports 42 of a size that does not discharge the object to be cleaned, and 43 is an outer tank having a main drain port 44 for discharging the cleaning water to the outside of the cleaning car. . The drainage port 44 is closed at the time of stopping and washing, and is opened by electric power only at the time of dehydration to drain the washing water to the outside. Such an inner tank 41 of the cleaning basket having a two-tank structure
When the cleaning water is poured into the container, the dehydration port 42 is opened, so that the outer tank 43 is also filled with water, and water is also poured into the gap between the inner tank and the outer tank.

[0003]

As described above, according to the conventional method, an external driving force such as electric power is required to open and close the main drainage port 44 of the outer tank 43, and the inner tank and the outer tank are not required. There is a drawback in that cleaning water is also required in the gap between and, and unnecessary cleaning water which is not originally necessary for cleaning is required.

[0004]

DISCLOSURE OF THE INVENTION The present invention is an opening and closing machine which is fixed to a large number of dehydrating ports provided on the side wall of a washing basket of a washing machine which is washed by being rotationally driven. , A water-stop lid and an elastic body are enclosed inside the elastic body in the direction of expansion and contraction of the elastic body on the opening side, and a cylindrical body with a large number of drainage outlets is provided on the outer wall at a predetermined rotational speed. Only when it reaches, the water-stopping lid is moved by contracting the elastic body by the centrifugal force generated in the water-stopping lid by rotating the washing basket, and as a result, the water is drained from the drain port. Is.

[0005]

According to the present invention, since the water shutoff lid and the elastic body having a predetermined spring force for supporting the water shutoff lid are used as the opening / closing valve of the dehydration port, except during the dehydration, Since the elastic body is not contracted by the centrifugal force generated by the low speed rotation of the cleaning basket, the water blocking lid is kept pressed against the dehydration port and is not drained from the dehydration port. The elastic body contracts due to the centrifugal force generated by the high-speed rotation of the car, so the water-stopping lid separates from the dehydration port, so the dehydration port opens and the internal tank is opened through the multiple drainage ports provided in the on-off valve. Wash water is drained from the.

[0006]

1 is a schematic sectional view of a fully automatic washing machine showing an embodiment of an on-off valve of the present invention, FIG. 2 is an enlarged sectional view of the embodiment shown in FIG. 1 when stopped or during washing, and FIG. It is an expanded sectional view of the Example shown in FIG. 1 at the time of dehydration. In FIG. 1, 1 is a washing tub, 2 is an opening / closing valve fixed to the outer wall of a large number of dewatering ports provided in the washing tub 1, 3 is an outer tub, and 4 is a main drain which is always open in the outer tub It is a mouth. In FIG. 2 and FIG. 3, 11
Is a stainless steel sphere (hereinafter referred to as a valve) which is a water-stopping lid, and 12 is a coil spring which is an elastic body appropriately adjusted so as to have a spring force sufficient to stop the water by pressing the valve 11 against a dehydration port 18 described later. , 13 is a tubular body that encloses the valve 11 and the coil spring 12 and is open only in one direction, and 14 is the tubular body 1.
A large number of drain outlets are provided in 3, and these constitute the on-off valve 15. Further, 16 is a washing tub, 17 is a mesh sheet for preventing foreign matters other than water fixed to the inner wall of the washing tub 16 from entering the opening / closing valve 15, 18 is a dehydration port provided in the washing tub 16, and 19a , 19b has a valve 11 having a dehydration port 1
8 is a packing made of rubber or the like, which is adhered to 8 and processed into a tapered shape so as to completely stop water.

As shown in FIG. 2, the outer wall side edge of the dehydration port 18 is tapered so that the valve 11 completely closes the dehydration port 18 at the time of stoppage or washing, and in addition, an elastic packing 19a such as rubber is provided. , 19b are provided. In addition, in order that the washing water drained from the dehydration port 18 can be drained to the outer tub 3 side, the coil spring 12 is provided on the outside and the coil spring 12 is provided on the inside of the on-off valve 15 outside the dehydration port 18. A stainless true sphere, which is a valve having an outer diameter larger than the diameter and smaller than the outer diameter of the opening / closing valve 15, is arranged, and the valve 11 is pushed by the spring force of the coil spring 12 to close the dehydration port 18, and the dehydration port 18 is closed. The on-off valve 15 is fixed to the outer wall of the washing tub 16 so that the center and the center of the on-off valve 15 coincide with each other. Here, the spring force of the coil spring 12 is adjusted in advance as follows so that the valve 11 is moved by the centrifugal force generated by the rotational driving of the washing basket only during the dehydration and drained from the washing tub. Spring force> Centrifugal force during washing + static pressure of washing water Spring force <Centrifugal force during dehydration + static pressure of washing water Since the adjustment is made as described above, the valve 11 generated by rotating the washing tub 11 Coil spring 1
Since the dewatering port 18 is closed by the valve 11 except when dehydrated, the water does not flow out from the washing tub 1 at the time of stoppage or washing, and is drained from the washing tub 1 only at the time of dehydration. It Therefore, drainage control of the washing tub 1 can be performed without requiring special power.

[0008]

According to the present invention, drainage control of the washing tub 1 can be performed without requiring special power. Further, since the dewatering port 18 of the washing tub 1 is closed except during dewatering, it suffices to store water only in the washing tub. Therefore, 30 to 40% of the water can be saved as compared with the case of the conventional two-tub structure. Since the main drainage port of the outer tub can be left open at all times, the structure of the washing machine can be simplified and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a fully automatic washing machine showing an embodiment of an opening / closing valve of the present invention.

FIG. 2 is an enlarged cross-sectional view of the embodiment shown in FIG. 1 during washing or at rest.

FIG. 3 is an enlarged sectional view of the embodiment shown in FIG. 1 during dehydration.

FIG. 4 is a schematic sectional view showing a conventional embodiment.

[Explanation of symbols]

 1, 16 Washing tank 2, 15 Open / close valve 4 Main drainage port 11 Water stop valve 12 Coil spring 13 Cylindrical body 14 Drainage port 17 Mesh sheet 18 Dehydration port 19a, 19b Packing

Claims (2)

[Claims] 1. A washing basket having a large number of dehydrating ports for a washing machine that is rotated by being driven, and an elastic body is housed on the bottom side inside a bottomed cylindrical body having a large number of drainage ports on its outer wall. A shutoff valve having a larger diameter than the dehydration port is accommodated on the opening side, and the open end of the bottomed tubular body is fixed to the periphery of the dehydration port of the outer wall of the washing basket. 2. The on-off valve according to claim 1, wherein the elastic body is a compression coil spring and has the following spring force (compression force). Spring force> Centrifugal force during washing + static pressure of wash water Spring force <Centrifugal force during dehydration + Static pressure of wash water