JPH0613854Y2 - Nozzle device for hot water cleaning - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a hot water washing nozzle device provided in a toilet bowl. More specifically, the present invention relates to a hot water washing nozzle device that is improved so as to eliminate the pulsation of jetted hot water when the hot water supplied from a pump pulsates.

[Prior Art] FIG. 4 shows a vertical cross-sectional view of a Western-style toilet provided with a conventional nozzle device for washing hot water of this type.

In FIG. 4, water is supplied into the raw tank 14 from the water supply pipe 10 through the water stop plug 12. The supplied water fills the low tank 14 and the service tank 1
It also fills 6. The water in the service tank 16 is further supplied to the warm water tank 20 through the water supply hose 18 and warmed to become warm water. The hot water is sucked up by the electromagnetic pump 22 and is supplied to the hot water washing nozzle device 26 via the hot water supply hose 24. The reason why the electromagnetic pump 22 is provided on the downstream side of the hot water tank 20 is that if the electromagnetic pump 22 is provided on the upstream side, the hot water tank must be a pressure resistant tank, and the apparatus becomes expensive. In the hot water washing nozzle device 26, the nozzle 28 is projected by the supply of hot water, and hot water is jetted toward the human buttocks from the hot water jet outlet provided at the tip of the nozzle 28.

[Problems to be Solved by the Invention] In the above-described conventional hot water cleaning nozzle device, hot water is supplied with a pressure that intermittently changes by, for example, an electromagnetic pump 22, and pulsation occurs in the jetted hot water. In this way, when pulsation occurs in the jetted hot water, the hot water is jetted from the jet outlet while spreading in a direction orthogonal to the jet direction, and spreads over a wide area of the human buttocks, and the wetted area of the buttocks expands unnecessarily. was there.

That is, when the jetted warm water pulsates, the water is jetted from the jet port in the form of a minute ring. (This ring is
The ring axis direction is the flight direction. ) This ring of hot water gradually expands during the flight process toward the buttocks of the human body, becoming a large diameter ring. As a result, the lateral bird's-eye view shape of the flow of the jetted hot water becomes an inverted conical shape that expands upward. Then, the warm water comes to be spread over a wide range of the buttocks of the human body.

It is an object of the present invention to provide a hot water washing nozzle device in which the jet flow is in the form of a bundle of equal diameter even if the hot water supplied pulsates.

[Means for Solving the Problems] The present invention comprises a nozzle having a hot water jet at the tip, a piston portion provided at the rear end of the nozzle, and a cylinder for accommodating and holding the nozzle so as to project forward. The present invention relates to a hot water cleaning nozzle device.

The hot water washing nozzle device of the present invention is provided with an intake passage that communicates with the atmosphere in the nozzle device, allows the inflow of the air into the nozzle device, and prevents the outflow of water from the nozzle device. A stop valve is provided in the intake passage.

[Operation] In the hot water washing nozzle device of the present invention, air is retained in the cylinder, and as a result, pulsation is prevented.

That is, when the supply of hot water into the cylinder is stopped, the residual water in the cylinder gradually tries to flow out from the tip side of the nozzle device. In the present invention, since the check valve that allows the air to flow into the cylinder is provided, the residual water gradually flows out from the tip of the nozzle device, and the air is introduced into the cylinder instead.

The air thus introduced into the cylinder is supplied at the time when the hot water pulsates into the cylinder at the time of the next hot water washing operation, for example, when the pressure increases among the intermittent pressure changes of the electromagnetic pump. Becomes smaller,
On the contrary, when the pressure becomes low, the volume becomes large. In this way, by repeatedly expanding and contracting the air so as to cancel the fluctuation of the hot water pressure supplied to the cylinder, the discharged hot water pressure is leveled and the pulsation is eliminated.

Embodiment Hereinafter, the present invention will be described in more detail with reference to an embodiment shown in the drawings.

FIG. 1 is a vertical cross-sectional view of a hot water washing nozzle device according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of an essential part of FIG. 1, and FIG. 3 is an operation explanatory view of the device of FIG. Is.

As shown in FIG. 1, a nozzle 28 is arranged at the center of the hot water washing nozzle device 26. A plurality of hot water outlets 32 are formed upward at the tip of the nozzle 28. A piston portion 34 is provided at the rear end of the nozzle 28. The piston portion 34 closes the rear end opening of the nozzle 28. There are two O-rings 3 on the outer circumference of the piston part 34.
6 is provided. A metal cylinder 38 is arranged on the outer peripheral side of the nozzle 28, and the piston portion 34 is
It is in sliding contact with the inner peripheral surface of the cylinder 38 via the ring 36. The nozzle 28 is housed and held in this cylinder 38,
It can be projected forward. The cylinder 38 is housed and held in a cylindrical holder body 40, and the tip of the nozzle 28 can be projected from the tip of the holder body 40. A flange 42 is provided at the rear end of the holder body 40. At the rear end of the holder body 40, the holder body 40
A sealing member 44 for closing the valve is fitted through an O-ring 46, and the sealing member 44 is fixed by a screw 45 to the flange 4
It is fastened to 2.

A metal head cap 48 is attached to the tip of the holder body 40.
Is screwed and fixed. The nozzle 28 can project from the opening 50 of the head cap 48.

In the middle of the holder body 40, the hot water supply hose 24
A hose connection portion 60 for connecting (see FIG. 4) is formed, and hot water is supplied into the holder main body 40 from an internal supply port 62. This hose connection 60
In the vicinity of, the cylinder 38 is provided with a hot water passage port 64, and hot water is supplied into the cylinder 28. The hot water supplied into the holder body 40 flows toward the rear end of the holder body 40. Then, it passes through the notch 66 formed at the rear end of the cylinder 38 and is supplied to the recess 68 formed on the inner surface side of the sealing member 44. The rear end of the piston portion 34 is exposed in the recess 68, and the nozzle 38 is pushed and projected by the pressure of hot water. Further, a hot water inlet 70 is formed in the piston portion 34 so as to coincide with the hot water passage 64 in a state where the nozzle 38 projects to the forward limit (see FIG. 3).

A valve connecting portion 72 is provided behind the hose connecting portion 60 to form an intake passage in the holder body 40. A check valve 76 is connected to the valve connecting portion 72. The check valve 76 includes a valve body 74 inside a valve case 78. Further, as shown in FIG. 2, a plurality of projections 80 are formed on the tip end surface portion of the valve connecting portion 72, and when the valve body 74 descends due to its own weight, the tip of the valve connecting portion 72 and the valve body 74 are separated from each other. A gap A is formed between them.

The valve case 78 has a hole 78 in which the shaft portion of the valve element 74 is loosely fitted.
A partition wall 78b with a is provided.

A valve seat 78c on which the valve body 74 is seated is formed at the lower edge of the hole 78a of the partition wall 78b.

A return spring 81 is arranged on the outer circumference of the nozzle 28. The tip end of the return spring 81 is locked to the tip end side of the holder body 40, and the rear end side of the return spring 81 engages with the piston portion 34 to urge the nozzle 38 in the backward direction.

In this nozzle device, the axial direction is an angle θ from the horizontal line.
It is attached to the toilet bowl by leaning forward so that it only tilts.

Next, the operation of the apparatus of this embodiment will be described.

The hot water sucked up by the electromagnetic pump 22 from the hot water tank 20 (see FIG. 4) is supplied from the hot water supply port 62 of the hose connecting portion 60 via the hot water supply hose 24 to the holder main body 4
0 and the cylinder 38. The supply of this hot water is accompanied by intermittent pressure fluctuation (pulsation) due to the characteristics of the electromagnetic pump 22.

The supplied hot water enters the recess 68 through the notch 66 at the rear end of the cylinder 38, presses the rear surface of the pinston portion 34, and resists the urging force of the return spring 81 to cause the nozzle 2 to move.
8 is projected forward. 3rd is the state of protruding to the forward limit
It is a figure. Since the nozzle 28 projects to the forward limit, the hot water passage port 64 of the cylinder 38 and the piston portion 34
The positions of the hot water inlets 70 are the same. As a result, the hot water is supplied into the nozzle 28 and is ejected from the hot water ejection port 32 at the tip of the nozzle 28. At this time, the valve body 74 of the check valve 76 is
The valve is lifted by the pressure of hot water, seated on the valve seat 78c, and the passage to the outside is blocked. Therefore, hot water does not leak out. Although a small amount of hot water may leak immediately before the valve body 74 closes, this amount is a small amount and is stored in the upper portion of the valve case 78.

When the supply of hot water is stopped, the nozzle 28 is gradually retracted by the urging force of the return spring 81. At this time,
The residual water in the cylinder 38 flows out to the toilet bowl through the gap between the inner peripheral surface of the opening at the tip of the cylinder 38 and the outer peripheral surface of the nozzle 28.

When the nozzle 28 retreats to the retreat limit (state of FIG. 1),
Since the piston portion 34 is not pressed against the residual water in the cylinder 38, the valve body 34 of the check valve 76 descends by its own weight and contacts the projection 80. As a result, the intake passage is opened to the atmosphere, and the atmosphere can flow between the holder body 40 and the cylinder 38. Therefore, the residual water between the holder main body 40 and the cylinder 38 further flows out from the tip of the device to the toilet bowl, and in exchange for this, air flows in from the intake passage.

Next, when hot water is supplied again to the nozzle device 26, the hot water flows into the cylinder 38 through the notch 66 and the recess 68 to advance the nozzle 28, and eventually the openings 70 and 64 are aligned with each other to eject hot water. Be started. In this case, since the holder body 40 and the cylinder 38 are inclined forward and downward at the inclination angle θ, the air in the apparatus is stored and trapped inside the holder body 40 and the cylinder 38 as shown in FIG. It will be. The trapped air 82 remains sufficiently even when hot water is ejected from the tip of the nozzle 28. Therefore, even if the supplied hot water is accompanied by intermittent pressure fluctuation (pulsation), this pressure fluctuation is absorbed by the trapped air 82 and pulsation can be prevented.
That is, at the moment when the hot water supply amount increases due to intermittent pressure fluctuations, the volume of the trapped air 82 becomes small, and the amount of hot water jetted out is kept small. Further, at the moment when the pressure is lowered and the hot water supply amount is reduced, the volume of the trapped air 82 is increased and the hot water is pushed out to increase the ejection amount. Therefore, it is possible to equalize the ejection amount by preventing an increase or decrease in the amount of the jetted hot water due to intermittent pressure fluctuations by the change in the volume of the trapped air.

In the above embodiment, the connecting portions 60 and 72 are both provided on the upper surface of the holder body 40, but one or both connecting portions may be provided at other locations. For example, the hose connecting portion 60 may be provided on the side of the holder body 40.

Further, in the above embodiment, the holder body 40 and the cylinder 38 are provided as separate members, but the holder body 40 and the cylinder 38 may be integrated so that the inside of the holder body 40 directly functions as a cylinder.

[Effect] As described above, according to the hot water washing nozzle device of the present invention, even if the water pressure of the supplied hot water pulsates, the pulsation of the jetted hot water does not occur. Therefore, the jetted hot water does not diffuse even in the flight process in the direction orthogonal to the jetting direction, and becomes a thin bundle and can be applied to the human buttocks. Therefore, when washing with warm water, the wetted area of the buttocks is narrowed, and extremely comfortable washing with warm water can be performed.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention. Second
The figure is an enlarged perspective view of the main part of FIG. FIG. 3 is a diagram for explaining the operation of FIG. FIG. 4 is a cross-sectional view of the entire Western-style toilet including a conventional hot water supply nozzle device. 12 ... Stop valve, 14 ... Faucet tank, 16 ... Service tank, 18 ... Supply hose, 20 ... Hot water tank, 22 ... Electromagnetic pump, 24 ... Hot water supply hose, 26 ... Hot water washing Nozzle device, 28 ... Nozzle, 30 ... Solenoid, 32 ... Hot water jet, 34 ... Piston part, 36 ... O-ring, 38 ... Cylinder, 40 ... Holder body, 42 ... Mounting flange, 44 ... Sealing member, 46 ... O-ring, 48 ... Head cap, 52 ... Head cap holding member, 56 ... Stopper, 58 ... Mounting flange, 60 ... Hose connection part, 62 ... Hot water supply Port, 64 ... Hot water passage port, 66 ... Notch part, 68 ... Recessed part, 70 ... Hot water inlet port, 72 ... Valve device connection part, 76 ... Check valve, 74 ... Valve body, 81 ... … Return spring.

Claims (1)

[Scope of utility model registration request] 1. A hot water cleaning for human buttocks including a nozzle having a hot water jet at the tip, a piston portion provided at the rear end of the nozzle, and a cylinder for accommodating and holding the nozzle so as to project forward. In the nozzle device, the intake device is provided with an intake passage communicating with the atmosphere in the nozzle device, and a check valve that allows the inflow of the atmosphere into the nozzle device and blocks the outflow of water from the nozzle device is provided. A nozzle device for hot water cleaning, which is provided in a passage.