JP3127609B2 - Nozzle device for hot water cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water cleaning apparatus,
In particular, it aims at draining residual water remaining in the nozzle.

[0002]

2. Description of the Related Art As such a prior art of the present invention, one disclosed in Japanese Patent Application Laid-Open No. 4-140339 is known. As shown in FIG. 5, the nozzle device 1 mainly includes a cylinder 2 and a nozzle 3 inserted into a cylinder chamber 8 of the cylinder 2. When washing water is supplied from a cylinder water supply port 4 formed at the rear end of the cylinder 2, the water pressure of the washing water pushes the piston face 7 at the rear end of the nozzle 3, and the nozzle 3 moves inside the cylinder 2. Extend to wash position. When the nozzle 3 extends to the cleaning position, the nozzle water supply port 5 formed on the peripheral surface of the rear end of the nozzle 3 communicates with the recess 6 formed in the cylinder 2. In this way, the washing water is guided from the recess 6 to the nozzle water supply port 5 and is spouted from the spout 9 formed at the tip of the nozzle 3.

When the supply of cleaning water stops, the nozzle 3
Is retracted to a storage position A indicated by a two-dot chain line by the urging force of a spring 1 disposed in the cylinder 2.

[0004]

However, at the storage position A, the nozzle water supply port 5 is closed by the inner surface of the cylinder chamber 8, and even if there is a slight gap, the nozzle water supply port 5 is also closed by the surface tension of the remaining washing water. It will come off. For this reason, air required for draining the washing water remaining in the water passage 8 is not supplied, and the washing water remains in the water passage 8. This waterway 8
If the remaining water inside remains for a long time, it is not hygienic,
In addition, it was cooled and turned into cooling water, which was first sprayed toward the human body during the next washing, thereby causing discomfort.

Therefore, the present invention sends air into the nozzle,
A technical issue is to prevent residual water from being left.

[0006]

Configuration of the Invention

[0007]

Means for Solving the Problems The technical solution taken in the present invention to solve the above problems is to provide a cylinder body, a cylinder chamber formed in the cylinder body, and a rear end of the cylinder body. A cylinder water supply port formed and communicating with the cylinder chamber, a cylinder having a first recess formed in an inner wall of the cylinder chamber, a nozzle body housed in the cylinder chamber so as to be able to advance and retreat, and a tip inclined downward. A spout formed at the tip of the nozzle body, a water passage formed in the nozzle body and communicating with the spout, and a piston formed at the rear end of the nozzle body and sliding in the cylinder chamber. A nozzle water supply port formed on the peripheral surface of the piston portion and communicating with the water passage and communicating with the cylinder chamber via the first recess at the washing position. And Le, a biasing means is provided inside the cylinder chamber for biasing said nozzle in a backward direction, and supplying means for supplying cleaning water into the cylinder supply port of the cylinder,
Valve means disposed between the cylinder water supply port and the supply means for communicating the cylinder water supply port with the atmosphere when the supply of the washing water from the supply means is stopped, and an inner periphery of a rear end of the cylinder chamber; A second recess communicating with the nozzle water supply port is formed at the surface of the nozzle at the storage position of the nozzle, and a communication hole communicating the cylinder water supply port with the second recess at the storage position of the nozzle at the piston portion. It is a warm water washing apparatus characterized by having.

[0008]

When the cleaning water is supplied from the cylinder water supply port to the cylinder chamber by the supply means, the piston portion at the rear end of the nozzle body is pushed and extended by the pressure of the cleaning water. When the cleaning position is reached, the nozzle water supply port formed in the piston communicates with the cylinder chamber through the first recess formed in the inner wall of the cylinder chamber, and the cleaning water is jetted from the jet port at the tip. Further, when the supply means stops the supply of the washing water, the nozzle is retracted by the urging means and stored in the cylinder chamber. A second recess is formed in the cylinder chamber at this storage position, and a communication hole is formed at the rear end of the nozzle, so that the second recess communicates with the nozzle water supply port and the cylinder water supply port. Let it. Further, since the valve means is opened to allow the cylinder water supply port to communicate with the atmosphere, the cleaning water remaining in the water passage is discharged from the jet port at the tip.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an external view of a hot water cleaning device 20 according to the present embodiment. As described above, the hot water washing device 20 includes the device main body 22 provided at the rear end of the toilet 21, and the toilet lid 22 and the toilet seat 23 pivotally supported by the device main body 22 at the rear end. A nozzle device 30 for performing local cleaning, a hot air drying device for blowing hot air after cleaning, and an automatic opening / closing device (both not shown) for opening and closing the toilet lid 23 and the toilet seat 24 are built in the device main body 22. . The cleaning water is supplied from a tap water pressure source to a main body water supply port 25 provided in the apparatus main body 22 through a water guide pipe 26.

Next, the nozzle device 30 will be described.
As shown in FIG. 2, the nozzle device 30 mainly includes a cylinder 40
And a nozzle 50, the tip of which is inclined downward. The cylinder body 41 of the cylinder 40 is fixed in the apparatus main body 22 by attachment portions 49, 49 formed on the outer periphery. The cylinder chamber 42 formed in the cylinder body 41 has a first
It comprises a cylinder chamber 42a and a second cylinder chamber 42b having a larger diameter than the first cylinder chamber 42a. First
A step portion 47 is formed at the rear of the cylinder chamber 42a.

The second cylinder chamber 42b has a cylinder body 4
1 is connected to a cylinder water supply port 43 formed at the rear end, and a metal pipe 44 is disposed inside. Between the rear end of the pipe 44 and the second cylinder chamber 42b,
A seal member 45 for preventing leakage of the cleaning water is provided. A groove 46 extending in the axial direction is formed on the inner peripheral surface of the second cylinder chamber 42b.
6 extends further than the tip 44 a of the pipe 44, is exposed from the tip 44 a of the pipe 44,
a. Further, a rear end 44b of the pipe 44 is formed shorter than the second cylinder chamber 42b, and a gap is formed between the rear end 44b of the pipe 44 and a piston portion 52 at a rear end of the nozzle body 51 described later.
That is, the second concave portion 48 is formed.

Next, the nozzle 50 will be described. The nozzle body 51 of the nozzle 50 has a spout (not shown) at its tip.
And a water passage 53 extending in the axial direction and communicating with the ejection port. A piston 52 is provided at the rear end of the nozzle body 51. A locking portion 54 to which one end of the spring 60 is locked is formed on the peripheral surface of the piston portion 52, and a contact portion 55 that is in contact with the step portion 47 of the cylinder 40 is formed obliquely on a peripheral edge of the locking portion 54. Have been. The other end of the spring 60 is locked at the tip of the first cylinder chamber 42a, and the spring 60 urges the nozzle 50 in the backward direction. Further, a sliding portion 52a formed on the rear end side of the piston portion 52 is formed substantially equal to the inner diameter of the pipe 44, and slides on the inner peripheral surface of the pipe 44 as the nozzle 50 advances and retreats. A nozzle water supply port 57 communicating with a water passage 53 in the nozzle body 51 is opened in the sliding portion 52a, and a cylinder extending toward the rear end portion is provided at the rear end side of the nozzle water supply port 57. A portion 59 is formed, and a communication hole 58 is formed in the cylindrical portion 59.

When the nozzle 50 is at the storage position, the second cylinder formed between the cylindrical portion 59 and the second cylinder chamber 42b is closed.
The recess 48 and the communication hole 58 allow the cylinder water supply port 43 and the nozzle water supply port 57 to communicate with each other.

Next, a water circuit of the hot water cleaning device 20 of the present embodiment will be described with reference to FIG. First, the washing water supplied to the main body water supply port 25 of the apparatus main body 22 from the tap water pressure source is supplied to the electromagnetic valve 62 and the regulator 6 in the apparatus main body 22.
Water is supplied to the hot water tank 65 through the valve 3 and the flow control valve 64. The cleaning water in the hot water tank 65 is heated to a desired temperature by a sensor and a heater (not shown). Then, water is sent from the hot water tank 65 to the nozzle device 30 through the switching valve 66. In this embodiment, two nozzle devices 30 are provided, one for the anus and one for the bidet. The switching valve 66, for example, when an instruction for anal cleaning is input, connects the anal nozzle device 30 to the hot water tank 65, and when not cleaning, connects the nozzle device 30 to the drain 67 (68 for a bidet). It is designed to communicate with the atmosphere. The solenoid valve 62, the flow control valve 64,
The opening / closing operation of the switching valve 66 and the temperature adjustment of the hot water tank 65 are performed by a microcomputer (not shown), and are operated by a user's instruction with a switch or the like.

Next, the operation of the nozzle device 30 will be described. When the electromagnetic valve 62 and the switching valve 66 are opened to supply cleaning water to the cylinder water supply port 43 of the nozzle device 30, the rear end face of the piston portion 52 is pushed by water pressure to extend from the tip of the cylinder 40, and 40 steps 47
Then, the contact portion 55 of the nozzle 50 comes into contact with the nozzle 50 and the extension stops.

When the nozzle 30 reaches the cleaning position shown in FIG. 3, the cleaning water in the second cylinder chamber 42b flows through the communication hole 58 from the distal end 44a of the pipe 44 to the first recess 4.
6a, and further from the first recess 46a to the nozzle water inlet 5
The water is sent to the water passage 53 through 7. Thus, the washing water is spouted from the spout at the tip of the nozzle 50.

Next, when the supply of the washing water is stopped by closing the solenoid valve 62, the nozzle 50 retreats into the cylinder chamber 42 by the urging force of the spring 60, and returns to the state shown in FIG. Further, while the electromagnetic valve 62 is closed, the switching valve 66 closes the communication between the nozzle device 30 and the hot water tank 65, and instead connects the nozzle device 30 with the drain 67 (or the drain 68). Thus, the cylinder water supply port 43 communicates with the atmosphere. The communication hole 58 at the rear end of the nozzle, the piston 5
Second concave portion 4 formed between cylinder 2 and cylinder body 41
8, the nozzle water supply port 57 and the water passage 53 of the nozzle 50,
Air is passed from the drain 67. Thus, the water channel 5
The air required for draining the residual water from the inside 3 is smoothly introduced, and the residual water is discharged from the jet port at the tip.

As described above, in the present embodiment, the nozzle water supply port 57 is not closed by the inner wall of the cylinder chamber 42 at the storage position of the nozzle 50, and the air for draining the residual water into the water passage 53 flows smoothly. Therefore, residual water is also discharged smoothly. Therefore, at the next washing, the washing water is heated to a desired temperature and the washing water is spouted from the beginning without jetting out the cold residual water, so that more comfortable washing can be performed.

As shown in FIG. 3, the nozzle 50 arrives at the cleaning position before the piston portion 52 is completely removed from the pipe 44. When it comes out of the pipe 44, there is a problem that it is difficult to return by coming into contact with the tip of the pipe 44 when it retreats and tries to return to the storage position. However, in the present embodiment, there is no such a problem. It is securely stored in the original storage position.

Further, even at the storage position, the sliding portion 52a of the piston portion 52 of the nozzle 50 does not come out behind the pipe 44. Therefore, the cleaning water supplied from the cylinder water supply port 43 does not leak from between the pipe 44 and the piston portion 52 and flows into the cylinder chamber 42, and the nozzle 50 can be efficiently advanced.

[0021]

According to the present invention, since the nozzle water supply port is not closed by the cylinder chamber at the storage position of the nozzle and the air for draining the residual water flows smoothly into the water passage of the nozzle, the residual water Can be prevented from draining from the nozzle at the tip of the nozzle and accumulating in the nozzle.

[Brief description of the drawings]

FIG. 1 is an external view of a hot water cleaning apparatus according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the nozzle device in a storage position according to the present embodiment.

FIG. 3 is a cross-sectional view of the nozzle device at a cleaning position according to the present embodiment.

FIG. 4 shows a water circuit of the hot water cleaning device of the present embodiment.

FIG. 5 shows a cross-sectional view of a conventional nozzle device.

[Explanation of symbols]

20 hot water washing device, 30 nozzle device, 40
Cylinder, 41 cylinder body, 42 cylinder chamber, 43 cylinder water inlet, 44 pipe, 46 cylinder
.Groove, 48... Second recess, 50... Nozzle, 51.
Nozzle body, 52, piston part, 53, water passage,
57 ··· Nozzle water supply port, 58 ··· Communication hole, 60 ··· Spring (biasing means), 62 ·· Electromagnetic valve (supply means), 6
5. Hot water tank, 66 Switching valve, 67, 68
·drain.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-140339 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E03D 9/08

Claims (1)

(57) [Claims] 1. A cylinder body, a cylinder chamber formed in the cylinder body, a cylinder water supply port formed at a rear end of the cylinder body and communicating with the cylinder chamber, and formed on an inner wall of the cylinder chamber. A cylinder having a first concave portion, a nozzle body housed in the cylinder chamber so as to be able to advance and retreat, a tip inclined downward, an ejection port formed at the tip of the nozzle body, and a nozzle formed in the nozzle body. A water passage communicating with an outlet; a piston formed at a rear end of the nozzle body and sliding in the cylinder chamber; and a piston formed on a peripheral surface of the piston and communicating with the water passage. A nozzle having a nozzle water supply port that communicates with the cylinder chamber through one recess, an urging means provided in the cylinder chamber to urge the nozzle in a backward direction; Supply means for supplying cleaning water to a cylinder water supply port of the cylinder; and a cylinder water supply port disposed between the cylinder water supply port and the supply means, wherein when the supply of cleaning water from the supply means stops, the cylinder water supply port communicates with the atmosphere. A second concave portion communicating with the nozzle water supply port at a storage position of the nozzle is formed on an inner peripheral surface of a rear end portion of the cylinder chamber; and a piston portion at a storage position of the nozzle at the storage position of the nozzle. A hot water washing device comprising a communication hole for communicating the cylinder water supply port with the second recess.