JPS6231112Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a water supply switching device for a washing machine that can selectively switch a plurality of water supply paths for a single water supply source by operating a single switching lever. It pertains to things with functions.

In particular, with regard to two-tub washing machines, there are washing machines that can switch between the top water supply and bottom water supply of the washing machine, or the water supply to the dehydration tank. Three water outlets corresponding to the upper water supply, lower water supply, and dewatering water supply are formed on the peripheral wall of the main body, and a cylindrical valve body with one or two water permeable ports is inserted into these, and this valve body is operated by an operating shaft. A device is used in which the water outlet is rotated to selectively communicate with the water outlet of the pot body through the water inlet. By the way, among this type of switching devices, lever-operated ones are arranged with the main unit facing vertically, but those operated by a rotary knob have an inclined washing machine operation panel. Because of this, it is necessary to install the kettle body so that the axis of the operation shaft, that is, the axis of the kettle body, is perpendicular to the operation panel, facing diagonally upward. In this type of installation method, one of the water outlets (in most cases, the water outlet for the upper water supply) on the Kotoku body is oriented upward, so the water faucet is connected to the selected upper water supply switching position using that water outlet. If the water supply is stopped, the water inside the Kotoku body will not flow out and most of it will remain. If left in such a state, for example in a cold region, the water inside would freeze, and since the switching device has a sealed structure, the device would be damaged or the switching operation would become impossible.

Therefore, the purpose of this invention is to create a water supply switching device that has a water outlet that opens upward, so that even if the water outlet is left in the selected state, water will naturally drain out of the body of the kettle, so that water will not freeze. To provide a water supply switching device for a washing machine which prevents the inconvenience caused by water.

Hereinafter, embodiments of this invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, this water supply switching device 1 includes:
It is equipped with a bottomed cylindrical body 2 and a cover member 3 that is attached to the opening thereof, and by rotating the valve body 14 inserted in the body 2 via the operating shaft 20, the upper water supply is performed. , the state is such that either the lower water supply or the dehydrated water supply is selected. Referring also to FIG. 2, the main body 2 is equipped with first, second, and third water supply cylinders 7, 8, and 9 arranged on its peripheral wall with an interval of 120 degrees, for example. . A drain hole 10 is formed in the peripheral wall facing the first water supply cylinder 7. In addition, this drain hole 10 is much smaller than the diameter of each water cylinder, and is about 1 to 2 φ. Furthermore, three protrusions 11 for locking the cover member 3 are provided on the outer circumferential wall of the pot body 2 to protrude outward. In this case, although only two protrusions are shown in FIG. 2, the remaining one is provided between the water supply cylinders 8 and 9. On the other hand, a lower bearing 12 for receiving the lower end of the operating shaft 20 is formed in the center of the bottom wall of the main body 2, and an arcuate rib 13 is concentrically arranged around the lower bearing 12. The valve body 14 inserted into the inside of the pot body 2 is made of a cylindrical body made of synthetic resin, and has first and second water holes 15 and 16 bored in opposing walls. In this case, the first water inlet 15 has a cutout 17.
The upper and lower ends of the cut portion 17 are elastically connected by a pair of connecting bands 18 that are bent in a U-shape and project inward. Furthermore, a pair of vertical ribs 19 are formed in a portion of the valve body 14 that faces the inner wall. As is clear from the above, this valve body 14 is
Because it is elastically deformed to easily contract and expand,
For example, it is inserted into the kettle body 2 so as to reduce the interval between the cut portions 17, and is brought into close contact with the inner wall of the kettle body 2 by the elastic force that tends to spread outward. On the other hand, if accurate dimensional accuracy cannot be obtained due to sink marks etc. during molding and the diameter is smaller than that in relation to the main body 2, the water pressure during water supply will force it to expand. It will come into close contact with the inner wall of the pot body 2. The operating shaft 20, which is supported in contact with the lower bearing 12 of the main body 2, has a first stopper 21 projecting from its lower part so as to cooperate with the end of the rib 13 described above, and It has a second stopper 24 located above and protruding in the opposite direction, so that a predetermined rotation angle, that is, each of the above-mentioned water supply positions can be obtained. Further, the operating shaft 20 has a pair of arms 22 extending in opposite directions, and a grip portion 23 having a U-shape when viewed from above in the figure is formed at the tip of each arm 22. This arm 22 is formed to be slightly shorter than the inner diameter of the valve body 14, and is configured such that the grip portion 23 fits into the vertical rib 19 of the valve body 14 with some gap. A flange 25 is provided around the upper part of the operating shaft 20, and a first O-ring 26 is attached to the upper part of the flange 25. The operating shaft 20 is inserted from above so that the grip portion 23 of the arm 22 fits into the vertical rib 19 of the valve body 14, and transmits rotational force to the valve body 14 via the arm 22. On the other hand, the cover member 3 includes a water receiving tube 27 to which a water supply hose (not shown) from a water faucet is connected, and three mounting brackets 28 connected to the outer periphery of the cover. At the opening edge of the cover member 3, there is a protrusion 11 of the Kotoku main body 2.
Correspondingly, three tongue pieces 29 extending downward are formed, and each tongue piece 29 is bored with an engagement groove 30 that cooperates with the protrusion 11. Note that a second O-ring 31 for sealing the upper edge of the lock body 2 is fitted to the inner wall edge of the cover member 3. In addition, at the center of the upper wall of the cover member 3,
An upper bearing 32 is formed to insert and support the upper end of the operating shaft 20, and an elastic piece 33 that acts on a second stopper 24 provided on the operating shaft 20 side extends downward near the upper bearing 32. A second stopper 2 is provided in the center of the
A slit 34 is provided for elastically locking 4 with an appropriate click force. This cover member 3 is placed on the cock body 2 by inserting the upper end of the operating shaft 20 into the upper bearing 32, and by engaging the protrusion 11 of the cock body 2 in the engagement groove 30 of the tongue piece 29. It is fitted into the upper opening of the pot body 2. At this time, the upper bearing 3
2 is watertightly sealed by the first O-ring 26 described above.

This water supply device 1 having the above configuration includes an operation box 4
The operating shaft 20 is screwed into the operating box 4 via a bracket 28 at an angle perpendicular to the obliquely inclined front panel 5 (see FIG. 1). That is, the pot main body 2 is placed diagonally and attached so that the water receiving tube 27 and the first water supply tube 7 face upward. In addition, reference number 3
5 is the operating shaft 2 through the through hole of the front panel 5.
This is a knob connected to 0. Further, in this embodiment, each water supply cylinder 7, 8, 9 has a communication pipe 39,
The upper and lower water supply ports of the corresponding washing tubs and the water supply ports of the spin-drying tubs are communicated via ports 40 and 41, respectively.

Next, the water supply switching operation will be explained. Third
The figure shows the state of the upper water supply. That is, as shown in the figure, when the operating shaft 20 is rotated counterclockwise to bring the first stopper 21 into contact with one end of the rib 13 (on the left side in the figure), the valve body 1
4 communicates with the first water supply cylinder 7 of the Kotuku main body 2, and the second and third water supply cylinders 8, 9
is closed by the peripheral wall of the valve body 14. Therefore, water flowing into the pot body 2 from the water receiving cylinder 27 is sent to the upper water supply port of the washing tub through the first water supply cylinder 7. When the operating shaft 20 is rotated clockwise in the drawing from this state via the operating knob 35, the second stopper 24 deforms the elastic piece 33 and fits over it into the slit 34 ( (See Figure 4). As a result, the operating shaft 20 is locked at the midpoint between both ends of the rib 13 with a light click feeling, and the second
A water inlet 16 communicates with the second water supply cylinder 8 . At this time, the first and third water supply cylinders 7 and 9 are connected to the valve body 14.
closed by a surrounding wall. Therefore, the water flowing from the water tank 27 is supplied to the lower water supply port of the washing tub through the second water supply pipe 8. Then, when the operating shaft 20 is further rotated clockwise in FIG. 3, the mode is switched to dewatering and water supply. That is, the second stopper 24 comes out of the slit 34 while deforming the elastic piece 33, and the elastic piece 33 at that time deforms.
Due to the spring elasticity of the operating shaft 20, the stopper 2
1 is easily switched so that it comes into contact with the other end of the rib 13 (on the right side in FIG. 3), and the third water supply cylinder replaces the second water supply cylinder 8 by the first water permeable port 15 of the valve body 14. 9 is opened, while the first and second water cylinders 7, 8 are closed. Therefore, the water tank 27
The more inflowing water is sent to the water supply port of the dehydration tank.
By the way, if the Kotoku main body 2 is installed diagonally as mentioned above, when the water faucet is closed at the upper water supply switching position, water will remain in the Kotuku main body 2, and the remaining water will freeze, making it impossible to switch, etc. There is a risk that it will become. However, in this invention, in the upper water supply state shown in FIG.
The drain hole 10 is opened by the second water permeable port 16, and the water remaining inside the pot body 2 is configured to flow out through the drain hole 10, so that switching failure due to freezing may occur. There is almost no possibility that this will occur. Naturally, in this upper water supply state, the water receiving tube 27
Water flowing in from the drain hole 10 also flows out from the drain hole 10, but the diameter of the drain hole 10 is much smaller than that of the water supply cylinder, and moreover, the water flowing out from the drain hole 10 flows out from the panel frame. Since water is received by a water receiving portion 37 formed on the side and supplied to the washing tub from there, there is no practical problem at all. In addition, the switching position of lower water supply and dehydration supply,
That is, when either the second or third water supply cylinders 8, 9 are in communication, the drain hole 10 is closed, but the second or third water supply cylinders 8,
9 will be located at the bottom when the pot body 2 is tilted, so most of the water inside will flow out through each of these water supply cylinders. Therefore,
The amount of water remaining inside the water supply main body 2 is extremely small, and even if it freezes, the water supply switching device 1 will hardly be damaged or become unable to switch. Another modified embodiment is shown in FIG. 5, and in this water supply switching device 1, a tapered portion 38 having a triangular cross section is provided inside the lower edge of the valve body 14. As shown in FIG. According to this, the water inside the pot body 2 can be almost completely drained through the drain hole 10. Note that this tapered portion may be provided on the bottom wall side of the pot body 2.

As is clear from the description of the above-mentioned embodiments, according to this invention, when the upper water outlet of the water outlet of the water outlet is communicated with the water outlet of the valve body, The water drain hole formed on the lower side is communicated with the other water permeation port of the valve body, so even if the water supply is left switched to the upper water supply, the water inside the switching device will not drain. It naturally flows out through the extraction hole, avoiding the inconvenience caused by freezing, which is extremely practical.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the water supply switching device according to this invention, Figure 2 is an exploded perspective view of the same device, and Figure 3 is the first
FIG. 4 is a back view of the cover member, and FIG. 5 is a longitudinal sectional view showing another embodiment. In the figure, 1 is the water supply switching device, 2 is the main unit, and 3
is a cover member, 4 is an operation box, 5 is an operation panel,
7, 8, 9 are the first, second and third water supply cylinders, 10 is the drain hole, 12 is the lower bearing, 14 is the valve body, 1
5 and 16 are first and second water permeable holes, 19 is a vertical rib,
20 is an operating shaft, 22 is an arm, 23 is a gripping portion, 26 is a first O-ring, 27 is a water container, 28
31 is a bracket, 31 is a second O-ring, 32 is an upper bearing, 35 is an operating knob, and 38 is a tapered portion.

Claims (1)

[Claims for Utility Model Registration] (1) A bottomed cylindrical pot body with a plurality of water outlets formed on the peripheral wall, and a water receiving tube connected to a water supply hose, etc., and the opening of the pot pot body is watertight. a cylindrical shape having a cover member that is fitted into the body, and a plurality of water holes that are rotatably provided within the body and that selectively communicate with one of the water outlets at a predetermined rotational position; a valve body; and an operating shaft extending through the cover member and into the body and operatively connected to the valve body, wherein any one of the identified water outlets is connected to the other water outlet. In the water supply switching device for a washing machine, the water supply switching device for a washing machine is constructed by tilting and installing the water outlet so that the water outlet is located above the specific water outlet. The washing machine has a hole, and the drain hole is opened by the other water hole of the valve body when the specific water outlet is communicated with the water hole of one of the valve bodies. Machine's water supply switching device. (2) The water supply switching device for a washing machine according to claim (1), wherein the water drain hole is formed to have an extremely smaller diameter than the specific water outlet. (3) In claim (1) of the utility model registration, the valve body that opens and closes the water drain hole has a tapered part on the inner side of the lower edge of the water hole for guiding residual water to the water drain hole. A water supply switching device for a washing machine, characterized in that: