JPH0550312B2 - - Google Patents

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a water supply coupling device for a washing machine that has an improved connection structure for coupling a coupling pipe to which a water supply hose is connected to a water supply port on the washing machine main body side. .

[Technical background of the invention and its problems] Conventionally, in a washing machine, a water supply hose connected to a water faucet is connected by fitting into a water supply port provided on the main body of the washing machine. I was trying to supply water to the washing machine. However, in this case, in order to prevent the water supply hose from accidentally coming off due to water pressure, vibrations of the washing machine, etc., the fit between the water supply hose and the water supply port is strengthened. There was a problem in that the water supply hose could not be easily attached and detached.

On the other hand, recently, a plastic joint pipe to which a water supply hose is connected is used, and an elastic claw is provided at one end of this joint pipe, and the joint pipe is fitted into the water supply port, and the elastic claw is used to supply water to the washing machine main body. A water supply hose is provided in which a water supply hose is removably connected to a water supply port via a joint pipe by being removably engaged near the mouth. In this case, the operation of attaching and detaching the water supply hose to the water supply port is easier than in the case described above, but since it utilizes the elastic deformation of the elastic claw, repeated attachment and detachment operations will cause the elastic claw to become damaged. There is a problem in that it deteriorates and deforms, etc., making it impossible to securely connect the joint pipe and the water supply port.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to easily attach and detach the joint pipe to the water supply port to which the water supply hose is connected, and to make it possible to easily attach and detach the joint pipe to the water supply port. To provide a water supply coupling device for a washing machine that can always ensure the connection state with a water supply port.

[Summary of the Invention] The present invention provides a water supply port provided on a washing machine main body, a joint pipe to which a water supply hose is connected and fitted to the water supply port, and a first water supply port provided on the outer peripheral surface of the water supply port. a second protrusion provided on the outer circumferential surface of the joint pipe to face the first protrusion; and a water supply provided on the outer circumferential surface of the water supply hose connection side from the second protrusion. A hose retaining protrusion for connecting a hose,
When the joint pipe is fitted to the water supply port, it is rotatably mounted so as to straddle both the first and second protrusions, and the first and second protrusions are rotated from the device position. and a connecting ring having a clamping part that locks the hose in a clamped state, and the outer diameter of the hose removal prevention protrusion is set slightly larger than the inner diameter of the connecting ring. It is characterized in that attachment/detachment to/from the water supply port is performed by rotating the connecting ring.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. First, in Fig. 2, 1 is the washing machine main body of a two-tub washing machine, 2 is its outer box, and inside this outer box 2, a washing tub 3 is arranged on the left side of the figure, and a dewatering tank (not shown) is arranged on the right side. ing. Reference numeral 4 denotes an operation box disposed at the rear of the upper part of the outer box 2, and the operation panel 5 of this box is equipped with a washing machine timer 6, a dehydration timer 7, a knob 8 for opening and closing a drain valve (not shown), etc. There is. 9
is a water supply recess formed in the approximate center of the operation panel 5. In FIG. 1, reference numeral 10 denotes a water supply case disposed at the bottom of the operation box 4, which includes a washing tub side water supply channel 11 communicating with the washing tub 3 side.
A dehydration tank side water supply channel 12 communicating with the dehydration tank side is formed. Reference numeral 13 denotes a water supply switching case that is located above the water supply case 10 and is movable in the left-right direction. , the lower end opening is located above the washing tank side water supply channel 11 as shown by the solid line in FIG.
It can be selectively switched between the position above the 15 is a cover that covers the upper surface of the water supply case 10, and this includes a cylindrical water supply port 16.
is installed protrudingly. The upper end of this water supply port 16 penetrates the bottom of the water supply recess 9 and protrudes upward, and the upper end of the outer circumferential surface of the water supply port 16 has an outer peripheral surface that protrudes outward on both left and right sides as shown in FIG. First protrusions 17, 17 are formed. 18 has a water supply hose 19 fitted and connected to the upper side and a water supply port 1 at the lower part.
6, a flange-shaped second protrusion 20 is formed on the outer circumferential surface of the axially intermediate portion so as to face the first protrusions 17, 17. A plurality of hose removal prevention protrusions 21 for connecting the water supply hose are formed in a step shape on the outer peripheral surface of the upper part of the protrusion 20, that is, the connection side part of the water supply hose 19. Thus, when the joint pipe 18 is fitted into the water supply port 16, the lower surface of the second protrusion 20 is in contact with the water supply port 1.
6 and is fitted and supported by the water supply port 16 . Reference numeral 22 denotes a connecting ring, which has a handle portion 23 on its outer circumferential surface, and is composed of an upper first clamping protrusion 24 and an opposing lower second clamping protrusion 25 on its inner surface. The holding portion 26 is provided with a holding portion 26. In this clamping part 26, the second clamping protrusion 25 has notches 27, 27 corresponding to the first protrusions 17, 17, as shown in FIG.
is formed. Further, first stoppers 28 and 28 are formed between the first and second clamping protrusions 24 and 25 on the inner surface of the connecting ring 22, and are located at one end side of each of the notches 27 and 27. At the same time, second stoppers 29, 29 are formed at intermediate portions between the notches 27, 27. As shown in FIG.
is movably mounted so as to straddle both the first and second protrusions 17 and 20, and the first and second clamping protrusions 24 and 25 of the clamping part 26 are rotated from the mounted state. between those first and second
The protrusions 17 and 20 are held in a pinched state to connect the joint pipe 18 to the water supply port 16. Here, as shown in FIG. 4, the inner diameter dimension A of the first clamping protrusion 24 in the connecting ring 22 is set smaller than the inner diameter dimension B of the second clamping protrusion 25 (A<B ), and the outer diameter dimension C of the hose removal prevention protrusion 21 of the joint pipe 18 is set to be slightly larger than the inner diameter dimension A of the first clamping protrusion 24, that is, the minimum inner diameter dimension of the connecting ring 22. (C>A). Therefore, in this case, the connecting ring 22 is
It is pre-attached to the joint pipe 18 as shown in FIG. 3 by fitting into the joint pipe 18 from the water supply hose connection side (upper side) so as to go over the hose removal prevention protrusion 21. There is. In this attached state, the first clamping protrusion 24 of the connecting ring 22 is located between the second protrusion 20 and the hose retaining protrusion 21, so that the connecting ring 22 is prevented from coming off.

In the above configuration, when connecting the joint pipe 18 to the water supply port 16, first attach the connecting ring 22 to the joint pipe 18 as shown in FIG. The water supply hose 19 connected to the faucet is fitted and connected. Then, the handle portion 23 of the connecting ring 22 is adjusted so that the notches 27, 27 of the second clamping protrusion 25 of the connecting ring 22 correspond to the first protrusions 17, 17 of the water supply port 16, respectively. The joint pipe 18 is fitted into the water supply port 16 while being positioned on the front side as shown by the solid line in FIG. 3. Then, the second clamping protrusion 2 on the connecting ring 22
5 is located below the first protrusions 17 and 17, so that the connecting ring 22 is attached so that its clamping part 26 straddles both the first and second protrusions 17 and 20. Become. From this state, when the handle portion 23 is rotated in the direction of arrow A in FIG. 3 and the connecting ring 22 is rotated to the position shown by the two-dot chain line in the same figure, the grip portion 26 is rotated as shown in FIG. locks the first and second protrusions 17 and 20 in a pinched state,
The coupling ring 22 connects the joint pipe 18 to the water supply port 16 in a manner that prevents it from coming off. In this case, when the connecting ring 22 is rotated to the position shown by the two-dot chain line, the second stoppers 29, 29
are in contact with the first protrusions 17, 17, respectively, so that they cannot rotate any further.

On the other hand, when removing the coupling pipe 18 from this connected state, rotate the coupling ring 22 in the opposite direction of arrow A to bring the handle portion 23 to the position shown by the solid line. Part 27,
27 correspond to the first protrusions 29, 29, respectively, and the clamping state of the first and second protrusions 17 and 20 by the clamping part 26 is released, and in this state, the joint pipe 18 can be lifted together with the connecting ring 22. For example, the joint pipe 18 can be removed from the water supply port 16. In this case, when the coupling ring 22 is rotated to the position shown by the solid line, the first stopper 2
8 and 28 contact the first protrusions 17 and 17, respectively, so that they cannot rotate any further.

According to this embodiment, the connecting ring 22 having the clamping portion 26 is connected to the first protrusion 17 provided in the water supply port 16 and the joint pipe when the joint pipe 18 is fitted to the water supply port 16. It is rotatably mounted so as to straddle both the second protrusion 20 provided on the clamping part 26 and the second protrusion 20 provided in the clamping part 26
The first and second protrusions 17 and 20 are held in place and the joint pipe 18 is connected to the water supply port 1.
6, the coupling pipe 18 to which the water supply hose 19 is connected can be attached to and detached from the water supply port 16 by simply rotating the coupling ring 22. Furthermore, due to the rotation of the connecting ring 22, the first
And since the second protrusions 17 and 20 are clamped, unlike those that utilize the elastic deformation of elastic claws, the clamping parts 26 etc. will not deteriorate or deform even if the attachment/detachment operation is repeated. There is almost no possibility that this will occur, and therefore, the connection state between the joint pipe 18 and the water supply port 16 can always be ensured.

In addition, especially in the case of this embodiment, the outer diameter dimension C of the hose removal prevention protrusion 21 provided on the joint pipe 18 is set to be slightly larger than the inner diameter dimension A of the connecting ring 22. It can be installed in a state where it does not come off, and the connecting ring 2
2 will not be lost, and the connecting ring 22
Connect the water supply hose 1 to the joint pipe 18 without attaching the
It is possible to eliminate the possibility that 9 will be connected.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate modifications within the scope of the invention.

[Effects of the Invention] As is clear from the above description, the present invention connects the joint pipe to the water supply port to which the water supply hose is connected by rotating the connection ring. The water supply port can be easily attached and detached, and the connection between the joint pipe and the water supply port can always be ensured.
In addition, the outside diameter of the hose stopper protrusion provided on the joint pipe is set to be slightly larger than the inside diameter of the connection ring, so the connection ring can be attached to the joint pipe without coming off, and the connection This has excellent effects such as preventing the ring from being lost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view of the main parts in a connected state, FIG. 2 is a perspective view of the upper part of the two-tub washing machine, and FIG. 3 is an exploded perspective view of the main parts. FIG. 4 is a front view of the joint pipe and the connecting ring, and FIG. 5 is a cross-sectional view of the connecting ring taken along the line - - in FIG. 4. In the figure, 1 is the main body of the washing machine, 16 is the water supply port, and 17
18 is a first protrusion, 18 is a joint pipe, 19 is a water supply hose, 20 is a second protrusion, 21 is a hose retaining protrusion, 22 is a connecting ring, and 26 is a clamping part.

Claims (1)

[Claims] 1. A water supply port provided on the main body of the washing machine, a joint pipe to which a water supply hose is connected and fitted into the water supply port, and a first pipe provided on the outer peripheral surface of the water supply port.
a second protrusion provided on the outer circumferential surface of the joint pipe so as to face the first protrusion; and a hose removal prevention protrusion for connecting the water supply hose, and the hose is rotatably mounted so as to straddle both the first and second protrusions when the joint pipe is fitted to the water supply port. a connecting ring having a clamping part that locks the first and second protrusions in a clamping state when rotated from a mounting position, and the outer diameter of the hose retaining protrusion is set to the inner diameter of the connecting ring. A water supply coupling device for a washing machine that is set slightly larger than the above.