JPH06108519A - Nozzle device for hot water washing device - Google Patents

Abstract

PURPOSE:To prevent residual water from being left in a nozzle. CONSTITUTION:A nozzle water supply port 57 connected to a jet port and a connection hole 58 which is located beyond the nozzle water supply port 57 and connected to a cylinder water supply port 43 are provided at the rear of a nozzle. Also a second recess 48 to connect the nozzle water supply port 57 with the connection hole 58 when the nozzle 50 is located at the store position is provided in a cylinder 40. Thus, atmospheric air is introduced from the cylinder water supply port 57 to the nozzle water supply port 57 smoothly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water washing device,
In particular, the purpose is to drain the residual water remaining in the nozzle.

[0002]

2. Description of the Related Art As such a prior art of the present invention, there is known one disclosed in Japanese Patent Laid-Open No. 4-140339. 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 the cleaning water is supplied from the cylinder water supply port 4 formed at the rear end of the cylinder 2, the piston surface 7 at the rear end of the nozzle 3 is pushed by the water pressure of the cleaning water, and the nozzle 3 moves inside the cylinder 2. Extend to the wash position. Then, 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 cleaning water is guided from the recess 6 to the nozzle water supply port 5, and is ejected from the ejection port 9 formed at the tip of the nozzle 3.

When the supply of washing water is stopped, the nozzle 3
Is retracted to the storage position A indicated by a two-dot chain line by the urging force of the spring 1 arranged 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, it is still closed by the surface tension of the remaining cleaning water. It will come off. Therefore, the air necessary for draining the wash water remaining in the water passage 8 is not supplied, and the wash water remains in the water passage 8. This waterway 8
The remaining residual water inside is unfavorable for hygiene if it remains for a long time,
In addition, when the water is cooled and becomes cooling water, it is jetted toward the human body at the time of the next washing, which causes discomfort.

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

[0006]

[Constitution of the invention]

[0007]

To solve the above-mentioned problems, a technical solution provided by the present invention 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 to communicate 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 capable of advancing and retracting and having a tip inclined downward; A jet port formed at the tip of the nozzle body, a water passage formed in the nozzle body and communicating with the jet port, and a piston part formed at the rear end of the nozzle body and sliding in the cylinder chamber. A nozzle water supply port that is formed on the peripheral surface of the piston portion and that communicates with the water passage and also communicates with the cylinder chamber through the first recess at the cleaning 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,
A valve means is provided 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 wash water from the supply means is stopped, and the inner circumference of the rear end portion of the cylinder chamber is provided. A second recess is formed on the surface so as to communicate with the nozzle water supply port at the storage position of the nozzle, and a communication hole for communicating the cylinder water supply port with the second recess at the storage position of the nozzle on the piston part. The hot water cleaning device is characterized by having.

[0008]

When cleaning water is supplied to the cylinder chamber from the cylinder water supply port by the supply means, the piston portion at the rear end of the nozzle body is pushed and extended by the water pressure of the cleaning water. Then, when reaching the cleaning position, the nozzle water supply port formed in the piston portion communicates with the cylinder chamber through the first recess formed in the inner wall of the cylinder chamber, and the cleaning water is ejected from the ejection port at the tip. Further, when the supply means stops the supply of washing water, the nozzle is retracted by the biasing means and is housed in the cylinder chamber. Since the second recess is formed in the cylinder chamber at this storage position and the communication hole is formed at the rear end of the nozzle, the second recess and the communication hole communicate the nozzle water supply port and the cylinder water supply port. Let Further, since the valve means is opened to communicate the cylinder water supply port with the atmosphere, the cleaning water remaining in the water passage is discharged from the tip ejection port.

[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 warm water cleaning device 20 according to this embodiment. As described above, the warm water washing device 20 includes the device main body 22 arranged at the rear end of the toilet bowl 21, and the toilet lid 22 and the toilet seat 23 whose rear end is pivotally supported by the device main body 22. A nozzle device 30 for performing local cleaning, a warm air drying device for blowing warm 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 body 22. . The cleaning water is supplied from the tap water pressure source through the water conduit 26 to the main body water supply port 25 provided in the main body 22 of the apparatus.

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 mounting portions 49, 49 formed on the outer circumference. The cylinder chamber 42 formed in the cylinder body 41 is a first chamber located on the tip side of the cylinder chamber 42.
It is composed of a cylinder chamber 42a and a second cylinder chamber 42b having a diameter larger than that of the first cylinder chamber 42a. First
At the rear of the cylinder chamber 42a, a step portion 47 is formed whose diameter decreases toward the tip.

The second cylinder chamber 42b is a cylinder body 4
It communicates with a cylinder water supply port 43 formed at the rear end of No. 1, 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 is provided to prevent the wash water from leaking. A groove 46 extending in the axial direction is formed on the inner peripheral surface of the second cylinder chamber 42b.
6 extends further longer than the tip end 44a of the pipe 44, is exposed from the tip end 44a of the pipe 44, and has a first recess 46.
a is formed. Further, the 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 the piston portion 52 at the rear end of the nozzle body 51, which will be described later.
That is, the second recess 48 is formed.

Next, the nozzle 50 will be described. The nozzle body 51 of the nozzle 50 has a nozzle (not shown) at the tip.
And a water passage 53 that extends in the axial direction and communicates with the ejection port, and a piston portion 52 is arranged at the rear end portion of the nozzle body 51. A locking portion 54 for locking one end of the spring 60 is formed on the circumferential surface of the piston portion 52, and a contact portion 55 for contacting the step portion 47 of the cylinder 40 is formed obliquely on the peripheral edge of the locking portion 54. Has been done. The other end of the spring 60 is locked to the tip of the first cylinder chamber 42a, and the spring 60 biases the nozzle 50 in the backward direction. Further, the sliding portion 52a formed on the rear end side of the piston portion 52 is formed to have a diameter 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 retracts. Further, a nozzle water supply port 57 that communicates with the water passage 53 in the nozzle body 51 is opened in the sliding portion 52a, and a cylinder that extends toward the rear end portion on 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 tubular portion 59.

When the nozzle 50 is in the storage position, the second portion formed between the cylindrical portion 59 and the second cylinder chamber 42b.
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, the water circuit of the hot water cleaning apparatus 20 of this embodiment will be described with reference to FIG. First, the cleaning water supplied from the tap water pressure source to the main body water supply port 25 of the main body 22 of the apparatus is the electromagnetic valve 62 and the regulator 6 in the main body 22 of the apparatus.
Water is supplied to the hot water tank 65 through the flow rate control valve 64 and the flow control valve 64. The washing water in the warm water tank 65 is heated to a desired temperature by a sensor and a heater (not shown). Then, water is supplied from the warm 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 connects the nozzle device 30 for the anus to the hot water tank 65 when an instruction to wash the anus, for example, and connects the nozzle device 30 to the drain 67 (68 for a bidet) when not washing, It is designed to communicate with the atmosphere. The solenoid valve 62, the flow rate 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 solenoid valve 62 and the switching valve 66 are opened and the cleaning water is supplied to the cylinder water supply port 43 of the nozzle device 30, the rear end surface of the piston portion 52 is pushed by the water pressure and extends from the tip of the cylinder 40. 40 steps 47
The abutment portion 55 of the nozzle 50 comes into contact with the and the extension is stopped.

When the nozzle 30 reaches the cleaning position shown in FIG. 3 in this way, the cleaning water in the second cylinder chamber 42b passes from the tip end 44a of the pipe 44 through the communication hole 58 to the first concave portion 4b.
6a, and further from the first recess 46a to the nozzle water supply port 5
It is sent to the water passage 53 through 7. In this way, the cleaning water is ejected from the ejection port at the tip of the nozzle 50.

Next, when the electromagnetic valve 62 is closed and the supply of washing water is stopped, the nozzle 50 retracts into the cylinder chamber 42 by the urging force of the spring 60 and returns to the state shown in FIG. Further, the solenoid valve 62 is closed, and 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 and the drain 67 (or the drain 68). As a result, the cylinder water supply port 43 communicates with the atmosphere. Then, from the cylinder water supply port 43, the communication hole 58 at the rear end of the nozzle, the piston portion 5
2 and the cylinder body 41 are formed with a second recess 4
8, a nozzle water supply port 57 and a water passage 53 of the nozzle 50,
Air is passed through the drain 67. In this way, water passage 5
Air necessary for draining the residual water in 3 is smoothly introduced, and the residual water is discharged from the jet port at the tip.

As described above, in this 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 residual water smoothly flows into the water passage 53. Therefore, residual water can be discharged smoothly. Therefore, at the time of the next washing, the cold residual water is not spouted and is warmed to a desired temperature and the washing water is jetted from the beginning, so that more comfortable washing can be performed.

Further, as shown in FIG. 3, the nozzle 50 reaches the cleaning position before the piston portion 52 is completely removed from the pipe 44. In the state where the pipe 44 is pulled out, there is a problem in that when the user tries to retreat again to return to the storage position, it comes into contact with the tip of the pipe 44 and it becomes difficult to return. It is surely 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 is not pulled out backward from 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 to flow 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 smoothly flows into the water passage of the nozzle, the residual water Can be prevented from being drained from the ejection port at the tip of the nozzle and not being accumulated in the nozzle.

[Brief description of drawings]

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

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

FIG. 3 shows a cross-sectional view of the nozzle device in the cleaning position of this embodiment.

FIG. 4 shows a water circuit of the hot water cleaning apparatus of this embodiment.

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

[Explanation of symbols]

20 ··· Hot water cleaning device, 30 · · Nozzle device, 40 · ·
Cylinder 41 ・ ・ Cylinder body 42 ・ ・ Cylinder chamber 43 ・ ・ Cylinder water inlet 44 ・ ・ Pipe 46
・ Grooves, 48 ・ ・ Second recesses, 50 ・ ・ Nozzles, 51 ・ ・
Nozzle body, 52 ... Piston part, 53 ... Water passage,
57..nozzle water supply port, 58..communication hole, 60..spring (biasing means), 62..solenoid valve (supplying means), 6
5 ・ ・ Hot water tank, 66 ・ ・ Switching valve, 67, 68 ・
·drain.

Front page continued (72) Inventor Hideki Furukawa 2-1-1 Asahi-cho, Kariya city, Aichi Prefecture Aisin Seiki Co., Ltd.

Claims (1)

[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 an inner wall of the cylinder chamber. A cylinder having a first recess, a nozzle body that is housed in the cylinder chamber so as to be able to move forward and backward, and has a tip inclined downward, an ejection port formed at the tip of the nozzle body, and the ejection body formed in the nozzle body. A water passage communicating with the outlet, a piston portion formed at the rear end portion of the nozzle body and sliding in the cylinder chamber, a piston formed on the circumferential surface of the piston portion, communicating with the water passage, and at the cleaning position Nozzle having a nozzle water supply port that communicates with the cylinder chamber via a recess, a biasing unit that is provided in the cylinder chamber and biases the nozzle in the backward direction, Supply means for supplying cleaning water to the cylinder water supply port of the cylinder, and the cylinder water supply port is communicated with the atmosphere when the supply of the cleaning water from the supply means is arranged between the cylinder water supply port and the supply means. A second concave portion is provided on the inner peripheral surface of the rear end of the cylinder chamber, the second recess communicating with the nozzle water supply port at the nozzle storage position, and the piston portion at the nozzle storage position. A hot water cleaning device having a communication hole for communicating the cylinder water supply port and the second recess.