JPS629413Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a nozzle cylinder for a human body private parts cleaning device (hereinafter simply referred to as a cleaning device) in a toilet. In recent years, the above-mentioned cleaning devices have been recognized for their usefulness from the viewpoint of health and hygiene, and have been used in large numbers. The general configuration of the cleaning device is
As shown in the figure, the water in the water tank 61 of the toilet is filtered by a filter 62, guided to a hot water tank 63 by a pump 63, heated in the hot water tank 63 to make hot water, and the hot water is heated to the discharge pressure of the pump 63. The pressure of the hot water is sent to the nozzle cylinder A fixed to the toilet bowl 67 via piping 65, 66, and the second piston 4 or the second cylinder 3 and the second
The piston 4 is made to protrude from the first cylinder 100,
Warm water is jetted out from a nozzle 48 formed at the tip of the second piston 4 to cleanse the private parts of the human body.

As this nozzle cylinder A, nozzle cylinders shown in FIGS. 5 and 6 exist as prior art. This nozzle cylinder includes a cylindrical first cylinder 100, a first piston 200 that is slidably mounted in a first cylinder chamber 107 of this first cylinder 100, and is integrally fixed to this first piston 200. The main components are a second cylinder 3 similarly inserted into the first cylinder chamber 107 and a second piston 4 slidably mounted in the second cylinder chamber 36 of the second cylinder 3.

The first piston 100 has a cylindrical cylinder portion 1
01 and a rear end portion 102 that is liquid-tightly fixed to this rear end with a cap nut 103. This rear end portion 10
Two ports 104 and 105 are formed in 2, and these ports 104 and 105 constitute a first hydraulic waterway and a second hydraulic waterway, respectively. port 10
4 is a first cylinder chamber 107 in which a central waterway 104a is formed along the central axis of the rear end portion 102.
It is open to On the other hand, the port 105 opens into the first cylinder chamber 107 as a ring-shaped groove 105a along the peripheral edge of the first cylinder chamber 107. A rubber pipe-shaped seal 106 is fixed to the open end of the central waterway 104a of the rear end portion 102.

The first piston 200 has a cylindrical shape with a central through hole 206, and has two cylindrical grooves formed on its outer peripheral surface, in which rubber seals are held. The first piston 200 is mounted in the first cylinder chamber 107 of the first cylinder 100 so as to be slidable in the axial direction.

The second cylinder 3 has a cylindrical shape, and its rear end is coaxially fixed to one end of the first piston 200.

The first piston 200 is urged toward the rear end (leftward in the figure) by a spring 202. A ring-shaped stopper member 51 is inserted into the distal end of the cylinder portion 101 of the first cylinder 100, and the stopper member 51 further has the cylinder portion 10 at its distal end.
A fixing member 52 screwed to the cylinder part 101 is firmly pressed and fixed to the tip of the cylinder part 101. The spring 202 is inserted between the stopper member 51 and the first piston 200 in a compressed state.

The second piston 4 consists of a cylindrical rear end portion 41 having a central hole 411 and a tubular tube portion 42 whose tip is sealed and has an axial hole 47 coaxially fixed to one side of the rear end portion 41. . On the outer peripheral surface of the rear end portion 41,
Two ring-shaped grooves are formed into which rubber seals are inserted. The second piston 4 is slidably mounted within the second cylinder chamber 36 of the second cylinder 3. A spring 43 is inserted between the ring-shaped back surface of the rear end portion 41 of the second piston 4, a guide 45 inserted into the tip of the second cylinder 3, and a guide fixture 46 fixed to the tip of the second cylinder 3 by screw connection.
is inserted in a compressed state to urge the second piston 4 toward the rear end. In addition, the cylindrical portion 4 of the second piston 4
The lower side peripheral wall of the tip of 2 is cut off, and the cylindrical part 4
A step 421 is formed in the lower middle of 2 (see FIG. 6). The guide 45 has a through hole with a shape equivalent to the circular cross-sectional shape of the distal end of the cylindrical portion 42, and prevents the cylindrical portion 42 from sliding along this through hole and rotating the cylindrical portion 42. It has a role to play. A check valve 44 is incorporated into the central hole 411 of the rear end portion 41 of the second piston 4 . This check valve 44 is always urged toward the rear end by a spring 441.

The prior art nozzle cylinder has the above configuration.

FIG. 5 shows one state when pressured water is introduced into the port 104 of this nozzle cylinder. Note that pressure water is not introduced into the other ports 105.
When pressurized water is introduced through port 104, it flows through the central hole of seal 106, so that
The seal 106 increases in diameter due to the water pressure, and the seal 106 increases in diameter by the water pressure, and the seal 106 closes the central waterway 10 at the tip 102 of the first cylinder 100.
4a and the center through hole 206 of the first piston 200
A seal 106 is pressed against the inner wall surface, and the tip 102 of the first cylinder 100 and the first piston 200
Seal between. and the first piston 200
Pressure water flows into the second cylinder chamber 36 of the second cylinder 3 through the central through hole 206 of the second cylinder 3 . This water pressure resists the biasing force of the spring 43 and drives the second piston 4 inserted into the second cylinder chamber 36 in the distal direction (rightward in the figure). The spring 441 of the check valve 44 is made strong enough to prevent the valve from opening under the water pressure at this time.
is the through hole 411 of the tip portion 41 of the second piston 4
is closed. FIG. 5 shows a cross section of the nozzle cylinder in this state.

When the pressure water is further introduced from the port 104, the stepped portion 421 of the second piston 4 collides with the guide 45, and the movement of the second piston 4 is stopped. When pressure water further flows into 104 in this state, the water pressure in the second piston chamber 36 increases, and this increased water pressure opens the check valve 44 and opens the shaft hole 47 of the cylinder 42.
Pressure water flows inside. And the pressure water 4 that flowed in
7 is ejected from the nozzle 48. Incidentally, the jetted water in this case is used as washing water for anal washing.

FIG. 6 shows a state in which pressure water is introduced into ports 104 and 105 at the same time. By introducing pressure water into the port 105, pressure water is introduced between the rear end of the first cylinder chamber 107 and the rear end of the first piston 200, and the first piston 200
Driven in the distal direction by water pressure. In this case, the seal 106 is separated from the center through hole 206 and the inner peripheral surface of the first piston 200. Further, pressurized water flows into the second cylinder chamber 36 of the second cylinder 3 through the center through hole 206 of the first piston 200, and the second piston 4 is driven in the distal direction by the water pressure. FIG. 6 shows a cross section of the nozzle cylinder in this state.

Furthermore, when pressure water is introduced into the ports 104 and 105, the first piston 200 and the second piston 4 are urged in the distal direction, so that the nozzle 4
8 protrudes in the distal direction by a length that is the sum of the amount of movement of the first piston and the amount of movement of the second piston.
When the movement of the first piston 200 and the second piston 4 is completed, the water pressure increases and overcomes the biasing force of the check valve 44, and the pressure water flows into the shaft hole 47 of the cylinder body 42, and the pressure is released from the nozzle 48 to the outside. Water gushes out. In this case, the jetted water becomes water for washing the woman's private parts (bidet).

Note that the amount of water introduced when cleaning the anus is relatively large, and the amount of water introduced when cleaning the bidet is due to the water pump 6.
3, and the water pump 63 is adjusted so that the most suitable amount of water is spouted.

In the prior art nozzle cylinder described above, since the rear end 102 of the first cylinder 100 and the first piston 200 are sealed with the rubber seal 106, the rear end 102 and the first piston 200 are sealed.
If water scale or the like adheres to the space between the two, the rubber seal may be deformed by water pressure in the gap, and there is a risk that abnormal stress may be applied to the rubber seal. Also, in extreme cases,
If dirt or the like is present between the rear end portion 102 and the first piston 200, there is a risk that the gap will become large and exceed the sealable range of the rubber seal 106, making sealing impossible.

The nozzle cylinder of the present invention provides a nozzle cylinder free from such problems.

That is, the nozzle cylinder of the human body private parts cleaning device of the present invention includes a first cylinder whose rear end is sealed, and a central through hole that is slidably attached to the first cylinder chamber of the first cylinder and is urged by the rear end. a first piston having a first piston, a second tubular cylinder formed integrally with the first piston, and a nozzle that is slidably attached to a second cylinder chamber of the second cylinder and that spouts water at a tip end thereof. and a tubular second piston having a shaft hole communicating with the nozzle and biased toward the rear end, and introducing pressurized water into the second cylinder chamber on the rear end side of the second piston. the first piston and the second piston due to the introduction of pressure water into the first cylinder chamber on the rear end side of the first piston and the second cylinder chamber on the rear end side of the second piston. A nozzle of a human body private part cleaning device in which the second piston protrudes in two stages and water is selectively jetted from a nozzle at the tip of the second piston to one of two private parts of the human body. In the cylinder, the rear end of the first cylinder has a first port forming a first hydraulic waterway, a center hole communicating with the first port, and the first cylinder is coaxially formed with the first cylinder. It has a tubular projection protruding into the cylinder chamber, and between the outer peripheral surface of the tubular projection of the first cylinder and the inner peripheral surface of the center through hole of the first piston, there is a groove extending from the tip of the center through hole to the rear end. The cylinder is characterized in that it has a seal-like valve that prevents water from flowing in, and that the rear end of the first cylinder has a port for a second water pressure waterway that opens to the rear end of the first cylinder chamber.

In the nozzle cylinder of the present invention, between the rear end of the first cylinder and the first piston, a first hydraulic water passage that does not flow into the first cylinder chamber is provided for a certain distance in the axial direction corresponding to the so-called sliding part between the cylinder and the piston. By forming the cylinder so that it moves at equal intervals, and sealing the interval, even if foreign matter such as limescale is interposed between the rear end of the first cylinder and the first piston, the two will not be in the relative position as designed. Even if it does not return, the waterway forming the first hydraulic waterway between the rear end of the first cylinder and the first piston can be completely sealed. In this invention,
A tubular projection inserted into the center through hole of the first cylinder is formed at the rear end of the first cylinder, and an equally spaced portion corresponding to the cylinder and the piston is formed between the center through hole and the tubular projection.

On the other hand, it is possible to form a cylindrical projection at the rear end of the first piston and provide a center hole at the rear end of the first cylinder, but this would result in the nozzle cylinder being longer. There is a problem. In the present invention, since the central through-hole in the first piston is utilized, the problem of a longer front length of the nozzle cylinder does not occur. The seal valve provided between the outer circumferential surface of the tubular protrusion provided at the rear end of the first cylinder and the inner circumferential surface of the center through hole of the first piston is either the outer circumferential surface of the tubular protrusion or the inner circumferential surface of the center through hole. It is fixed to either the circumferential surface. Then, it is made to abut and slide against the other surface. This seal valve is the first
This prevents pressure water from flowing back from the tip to the rear end of the piston. Therefore, it may be a check valve that allows water to flow from the rear end toward the front end in the center through hole of the first piston.

The nozzle cylinder of the present invention has a type of cylinder-piston relationship between the tubular protrusion and the central through hole, so even if a foreign object is present between the rear end of the first cylinder and the first piston, both can be completely separated. can be sealed. Further, no abnormal deformation occurs in the seal portion due to the presence of foreign matter. Therefore, the nozzle cylinder of the present invention has high durability.
The nozzle cylinder of the present invention has a special feature in the sealing portion between the rear end of the first cylinder and the first piston, and other parts are the same as the nozzle cylinder of the prior art described above. be. Therefore, for the parts other than the seal between the rear end of the first cylinder and the first piston, the above-mentioned prior art can be used as is, or other conventionally known related technologies can be employed and combined.

Examples will be explained below.

Embodiments of the nozzle cylinder of the human body private parts cleaning device of the present invention are shown in FIGS. 1 to 3. The nozzle cylinder of this embodiment has a cylindrical first cylinder 1, first piston 2, second cylinder 3, and second piston 4 as main components. The second cylinder 3 and second piston 4 of this nozzle cylinder are the same as the second cylinder 3 and second piston 4 shown in FIGS. 5 and 6, which were previously described as prior art.

The first piston 1 consists of a cylindrical cylinder part 11 and a rear end part 12 fixed to the rear end of the cylinder part 11 in a liquid-tight manner with a cap nut 16. A tubular projection 13 having a center hole 131 coaxially along the axis of the first cylinder 1 is formed in the rear end portion 12 . The center hole 131 communicates with a port 14 of a first hydraulic waterway formed integrally with the end surface of the rear end portion 12 of the first cylinder 1, as shown in FIG. still,
The port 15 of the second hydraulic waterway is formed on the end surface of the rear end portion 12 along with the port 14 . This port 15 communicates with a ring-shaped groove 15a formed in the bid portion of the outer peripheral surface of the tubular projection 13.
Note that this groove 15a is a part of the cylinder chamber 17 of the first cylinder 1.

The first piston 2 has a cylindrical shape with a central through hole 26, and has a ring-shaped groove formed on its outer peripheral surface, in which a rubber seal 23 is held. A second cylinder 3 is coaxially connected to the first piston 2. Center through hole 26 of first piston 2
The tubular protrusion 13 of the rear end portion 12 is inserted into the center hole of the seal valve 27 in which a circular pedestal-shaped seal valve 27 having a center hole is incorporated, and the outer peripheral surface and the inner surface of the seal valve 27 are inserted into the center hole of the seal valve 27. The peripheral surface slides into contact with the first
The center through hole 26 of the piston 2 is sealed.

The characteristic parts of the first cylinder 1 and the first piston 2 of the nozzle cylinder of this embodiment are as described above, and the other parts are the same as those of the first cylinder and the first piston of the nozzle cylinder of the prior art described above. The structure is the same as that of Further, the second cylinder 3 and second piston 4 used in the nozzle cylinder of this embodiment have the same structure as the second cylinder 3 and the second piston 4 of the prior art nozzle cylinder described above. Therefore, descriptions of their structures will be omitted.

The structure of the nozzle cylinder according to the embodiment of the present invention is as described above.

This nozzle cylinder introduces pressure water into the port 14 and closes the port 15, so that the pressure water in the port 14 passes through the center hole 131 and directly into the first
It flows into the center through hole 26 of the piston 2, and from there into the cylinder chamber 36 of the second cylinder 3. The water pressure in the second cylinder chamber 36 drives the second piston 4 toward the tip (rightward in the figure) against the biasing force of the spring 43. On the other hand, in the center through hole 26 of the first piston, the first cylinder 1
A seal valve 27 is provided between the outer circumferential surface of the tubular projection 13 of the rear end portion 12 and the inner circumferential surface of the center through hole 26 of the first piston, and the pressure water in the center through hole 26 is sealed from the first cylinder 1. does not flow into the cylinder chamber 17. Therefore, the first piston 1 is biased by the spring 22 and remains at the rear end position.
When pressurized water is further introduced from the port 14, the second piston 4 moves to the most extreme position (towards the right in the figure),
Stop there. When pressure water is further introduced, the water pressure in the second cylinder chamber 36 increases, overcomes the biasing force of the check valve 44 of the second piston 4, opens the check valve 44, and the pressure water flows into the second piston 4. It flows into the shaft hole 47 of the cylindrical body 42. Then, pressurized water is ejected from a nozzle provided at the tip (not shown) of the second piston 4. This squirted cleansing water is used for anal cleansing.

If the introduction of pressure water is stopped in this state, the spring 4
The second piston 4 is driven toward the rear end by the urging force of the second cylinder chamber 36, and the water in the second cylinder chamber 36 flows backward through the first port 14 and flows out to the outside through a throttle valve (not shown). Finally, the state shown in FIG. 1 is restored.

When pressure water is introduced into the port 15, the cylindrical protrusion 13
Pressure water is introduced into the cylinder chamber 17 of the first cylinder 1 through a ring-shaped groove 15a provided on the outer periphery of the base. This pressure water causes the first piston 2
is driven and moves toward the tip. At this time, a seal valve 27 provided in the center through hole 26 of the first piston 2
is the tubular projection 13 of the rear end 12 of the first cylinder 1
slides on the outer circumferential surface of the When the first piston 2 is further driven in the distal direction, the seal valve 27
It comes out from the tubular projection 13. In this state, the pressurized water in the first cylinder chamber 17 flows into the second cylinder chamber 36 of the second cylinder 3 through the center through hole 26 of the first piston. The water pressure in the second cylinder chamber 36 drives the second piston 4 in the distal direction. When pressurized water is further introduced through the port 15, the first piston 2 and the second piston 4 are driven to the most extreme positions and stopped. Further, the pressure water that is sent increases the water pressure in the second piston chamber 36, which opens the check valve 44 against the biasing force of the check valve 44, and the pressure water flows into the second piston cylinder. It flows into the shaft hole 47 of the body 42 . Then, it is ejected from a nozzle provided at the tip of the second piston (not shown). This spouted water is used as bidet cleaning water.

When the introduction of pressure water through the port 15 is stopped in this state, the water in the first cylinder chamber 17 is biased by the spring 22 that biases the first piston, and the water in the second piston chamber 36 biases the second piston 4. spring 43
, the water flows backward through ports 14 and 15 and is discharged to the outside through a throttle valve (not shown). Note that if a foreign object or the like is present at the rear end of the first cylinder chamber 17 between the rear end portion 12 of the first cylinder 1 and the first piston 2 and the first piston does not return to a predetermined position, for example, Even when the first piston 2 stops at the position shown in FIG.
The seal valve provided in the center through hole 26 of the piston 2 comes into contact, and the center through hole 26 of the first piston 2 is reliably sealed. Therefore, even if the first piston 2 is stopped in the state shown in FIG. 3, the pressure water will not flow into the first cylinder chamber 17 by introducing pressure water into the port 14.

Therefore, even in such a case, the second piston 4
Only the second anal cleaning position is driven and the second
A nozzle provided at the tip of the piston 4 can be carried.

In this embodiment, a ring-shaped seal valve is used, but other shapes may be used. Further, the seal valve is connected to the center through hole 2 of the first piston 2.
Instead of being fixed to 6, it may be fixed to the outer peripheral surface of the tip of the tubular projection 13.

[Brief explanation of the drawing]

1 to 3 show a nozzle cylinder according to an embodiment of the present invention.
The figure is a cross-sectional view taken along arrows A--A in Figure 1.
The figure is a cross-sectional view of the main part of the nozzle cylinder showing the state when the first piston 2 cannot return to the predetermined position due to foreign matter etc. Figure 4 is an overall conceptual diagram of a human body private part cleaning device using the nozzle cylinder, Figure 5 FIG. 6 shows a nozzle cylinder existing as prior art,
FIG. 5 is a partially cutaway sectional view showing a state in which the first piston 200 is at the rear end position and the second piston 4 is driven in the distal direction, and FIG. FIG. 3 is a partially cutaway sectional view showing a state when the vehicle is driven. 1...First cylinder, 2...First piston, 3
...Second cylinder, 4...Second piston, 13...
... Tubular projection, 14, 15 ... Port, 26 ... Center through hole, 27 ... Seal valve, 100 ... First cylinder, 200 ... First piston.

Claims (1)

[Claims for Utility Model Registration] (1) A first cylinder whose rear end is sealed, and a central through hole that is slidably attached to the first cylinder chamber of the first cylinder and is biased by the rear end. a first piston; a second tubular cylinder integrally formed with the first piston;
It is slidably attached to the second cylinder chamber of the cylinder, has a nozzle that spouts water at its tip, a shaft hole that communicates with the nozzle, and a tubular second piston that is biased toward the rear end. and protrusion of the second piston by introducing pressure water into the second cylinder chamber on the rear end side of the second piston, and the first cylinder chamber on the rear end side of the first piston and the second piston. Due to the protrusion of the first piston and the second piston due to the introduction of pressure water into the second cylinder chamber on the rear end side, the second piston protrudes in two stages, and is selectively applied to one of the two private parts of the human body. In a nozzle cylinder of a human body private parts cleaning device that jets water from a nozzle at the tip of the second piston, the rear end of the first cylinder has a first port forming a first water pressure waterway, and a first port forming a first water pressure waterway. a tubular projection having a central hole communicating with the port and projecting into the first cylinder chamber formed coaxially with the first cylinder, the outer peripheral surface of the tubular projection of the first cylinder and the center of the first piston; A seal-like valve is provided between the inner circumferential surface of the through hole and prevents water from flowing from the tip to the rear end of the central through hole, and further,
A nozzle cylinder for a human body private part cleaning device, wherein the rear end of the first cylinder has a port for a second water pressure waterway that opens to the rear end of the first cylinder chamber. (2) The nozzle cylinder according to claim 1, wherein the seal valve is fixed to the central through hole of the first piston and slides in contact with the outer peripheral surface of the tubular projection of the first cylinder. (3) The nozzle cylinder according to claim 1, wherein the seal valve is fixed to the outer peripheral surface of the tubular projection of the first cylinder and slides in contact with the inner peripheral surface of the central through hole of the first piston. .