JPS632525Y2 - - 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 64 by a pump 63, heated in the hot water tank 64 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 liquid-tightly fixed to this rear end with a cap nut 103. This rear end 1
Two ports 104 and 105 are formed in 02, 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 having 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 the 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 inner peripheral surface of the center through hole 206 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 cylindrical portion 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 center hole that communicates with the port and opens into the first cylinder chamber, and the center hole is driven in the axial direction and has a center through hole of the first piston. When in contact, the first cylinder chamber of the first cylinder is closed, and the center hole and the center through hole of the first piston are connected, and when the center hole and the first piston are separated, the center hole and the a tubular valve communicating between a first cylinder chamber and a center through hole of the first piston, and driving the tubular valve in the axial direction to cause the tubular valve to come into contact with or separate from a wall surface forming the center through hole of the first piston. It is characterized in that it is provided with a drive device.

In the nozzle cylinder of the present invention, a cylindrical valve is provided between the rear end of the first cylinder and the first piston to form a waterway that does not flow into the first cylinder chamber,
By driving this tubular valve in the axial direction, the second
It is possible to send pressurized water only to the cylinder chamber, or, on the other hand, to drive the tubular valve in the opposite direction to send pressurized water to both the first cylinder chamber and the second cylinder chamber, and to send pressurized water to the second cylinder chamber with a nozzle.
This allows the piston to protrude in two stages.

As a result, even if foreign matter such as limescale is present between the rear end of the first cylinder and the first piston, and the two do not return to their designed relative positions, the tubular valve will be driven that much more. In order to form a water channel between the rear end of the first cylinder and the first piston, the second piston can be protruded in two stages as designed. Furthermore, by providing a tubular valve, the number of ports can be reduced from two to one.

A center hole is provided at the rear end of the first cylinder to slidably hold the tubular valve. A tubular valve slides within this central hole. Note that an O-ring or the like is used to seal between the tubular valve and the inner peripheral surface of the center hole. An opening is provided at the center of the tip of the tubular valve, and the peripheral end forming this opening comes into contact with the inner peripheral surface of the center through hole of the first piston, thereby reducing the pressure from the center through hole of the first piston to the first cylinder chamber. Prevent water runoff. In order to achieve a complete seal between the tip of the tubular valve and the inner circumferential surface of the central through hole, it is preferable that the tip of the tubular valve has a spherical surface and the opening of the central through hole widens into a funnel shape. The center through hole is preferably made of a material that is more flexible than steel, such as plastic, copper, or copper alloy. On the other hand, the first piston is preferably made of hard, wear-resistant steel or the like.

The nozzle cylinder of the present invention uses the above-mentioned tubular valve, and drives this tubular valve in the axial direction with a drive device to directly communicate the pressure water channel to the center through hole of the second piston, thereby supplying pressure water only to the second cylinder. The feature is that the pressure water is sent to the first cylinder chamber and the second cylinder chamber at the same time by driving the tubular valve in the opposite direction. Technology nozzle cylinder is identical. Therefore, the rear end of the first cylinder and the first
For parts other than the center through hole of the piston, the above-mentioned prior art can be used as is, or other conventionally known technologies connected to these can be adopted 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 includes a cylindrical cylinder portion 11 and a rear end portion 12 liquid-tightly fixed to the rear end thereof with screws. This rear end portion 12 has a center hole 13 coaxially formed along the axis of the first cylinder 1 . Note that this center hole 13 communicates with a port 14 provided on the lower side wall of the rear end portion. A bearing hole 13a is coaxially formed in the center hole 13 and opens at the other end of the rear end. The tubular valve 15 has a cylindrical shape with a semicircular tip, and an opening is formed at the tip. Further, a ring-shaped groove is formed on the outer surface of the tubular valve 15, and a seal 151 is fitted into the ring-shaped groove to seal the inner circumferential surface of the center hole 13. Further, a drive shaft 152 is fixed to the rear end of the tubular valve 15,
This drive shaft 152 passes through the bearing hole 13a in a fluid-tight manner. A spring 153 is installed in a compressed state between the bottom surface of the center hole 13 and the tubular valve 15.
5 in the direction of the tip. A solenoid 16 is used as a driving source, and this solenoid 16 is fixed to the rear end of the rear end portion 12 of the first cylinder 1 with a screw 161 or the like. A movable shaft of this solenoid 16 serves as a drive shaft 152. This solenoid 1
6 is not working, that is, is not energized, the tubular valve 15 is moved in the distal direction by the biasing force of the spring 153. FIGS. 1 and 2 show this state. When the solenoid 16 is energized, the drive shaft 152 moves the tubular valve 15 toward the rear end against the biasing force of the spring 153. This state is shown in FIG.

The first piston 2 has a cylindrical shape with a central through hole 2, and has two ring-shaped grooves 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
It has a funnel-shaped opening with a wide mouth toward the rear end. The spherical tip of the tubular valve 15 comes into contact with this opening, sealing off the cylinder chamber 1 of the first cylinder 1, and the opening of the tubular valve 15 communicates only with the center through hole 26 of the first piston 2.

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 as follows. The structure is the same as that of the piston 2 (FIGS. 5 and 6). 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 second piston 4 of the nozzle cylinder of the prior art 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.

In the state shown in FIG. 1, that is, in the state in which the solenoid 16 of this nozzle cylinder is not energized, the first piston is biased toward the rear end by the spring 22, and a tubular shape is formed on the inner peripheral surface of the center through hole 26. The spherical tip of the valve 15 is in contact with it. At this time, the tubular valve 15 is moved in the distal direction by the urging force of the spring 153 to close the first cylinder chamber 17, and the opening of the tubular valve 15 is connected to the center through hole 2 of the first piston 2.
It communicates only with Moreover, the second piston 4 is
It is biased toward the rear end by a spring 43, and the rear end is in contact with the first piston 2.

In this state, when pressure water is introduced into the port 14, the pressure water passes from the center hole 13 through the shaft hole of the tubular valve 15 and directly into the center through hole 26 of the first piston 2.
From there, it flows into the second cylinder chamber 36 of the second cylinder 3. Note that the first cylinder chamber 1
7 is closed by a tubular valve 15, so that pressure water does not flow into the first cylinder chamber 17.

At this time, this pressurized water flows into the gap between the rear end 41 of the second piston 4 and the surface of the first piston 2 facing thereto. As a result, the first piston 2 is pushed in the biasing direction of the spring 22 with a force of "(area of a circle whose diameter is the inner diameter of the second cylinder 3) x (hydraulic pressure of pressure water)". On the other hand, when the pressure water flows into the center through hole 26 of the first piston 2, the first piston 2 is It is pushed toward the tip by the pressure water with a force equal to "area of the circle) x (pressure of the pressure water)". However, tubular valve 1
The area formed by the contact of the piston 5 with the center through hole of the first piston 2 is smaller than the area of a circle whose diameter is the inside of the second cylinder 3. Therefore, the first piston 2 is pushed back toward the rear end regardless of the pressure of the pressurized water or the urging force of the spring 22.
Therefore, when the solenoid is not energized, that is, as long as the tubular valve 15 is moved in the distal direction by the biasing force of the spring 153 and closes the first cylinder chamber 17, the first piston 2 is moved in the distal direction. It maintains a state at the rear end position without protruding. On the other hand, the second piston 4 protrudes toward the distal end due to the water pressure in the second cylinder chamber 36 against the biasing force of the spring. The state at this time is shown in FIG.

When pressure water is further introduced from port 14, the second
The piston 4 moves to the most extreme position (rightward in the figure) and stops there. When pressurized water is further introduced, the water pressure in the second cylinder chamber 36 increases, overcoming the biasing force of the check valve 44 of the second piston 4,
The check valve 44 is opened, and the pressurized water flows into the shaft hole 47 of the cylindrical body 42 of the second piston 4 . 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 3
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
5. The water flows backward through the center hole 13 and port 14, and flows out to the outside through a throttle valve (not shown). Finally, the state shown in FIG. 1 is restored.

From the state shown in FIG. 1, the solenoid 16
When the drive shaft 152 is excited, as shown in FIG.
moves toward the rear end against the biasing force of the spring 153. Then, the spherical tip of the tubular valve 15 separates from the inner circumferential surface of the funnel opening of the center through hole 26 of the first piston 2 that it was in contact with, and the first cylinder chamber 17 is unblocked.

In FIG. 1, when pressure water is introduced into the port 14 with the solenoid 16 energized and the first cylinder chamber 17 unblocked by the tubular valve 15, the pressure water flows from the center hole 13 into the shaft of the tubular valve 15. It passes through the hole and flows into the cylinder chamber 17 of the first cylinder 1. At the same time, it passes through the center through hole 26 of the first piston 2 and flows into the second cylinder chamber 36 . The pressure water that has flowed into the first cylinder chamber 17 causes the first piston 2 to move toward the tip with a force of "(area of a circle whose diameter is the inner diameter of the first cylinder chamber 17) x (water pressure of the pressure water)". Pushed. On the other hand, the pressure water that has passed through the center through hole 26 of the first piston 2 and entered the second cylinder chamber 36 flows into the gap between the rear end 41 of the second piston 4 and the surface of the first piston 2 facing thereto. do. As a result, the first piston 2 is pushed in the biasing direction of the spring 22 with a force of "(area of a circle whose diameter is the inner diameter of the second cylinder 3) x (hydraulic pressure of pressure water)".

However, the area of a circle whose diameter is the inner diameter of the first cylinder chamber 17 is larger than the area of a circle whose diameter is the inner diameter of the second cylinder 3. Therefore, the first piston 2 resists the biasing force of the spring 22 and protrudes in the distal direction. In addition, the second piston 4 also protrudes in the distal direction against the biasing force of the spring 43 due to the water pressure in the second cylinder chamber 36 . Therefore, when the solenoid 16 is excited, the amount of protrusion of the first piston 2 is added to the amount of protrusion of the second piston 4.
It becomes possible to make the second piston 4 protrude in stages. FIG. 3 shows a state in which the first piston 2 and the second piston 4 are protruded. When pressurized water is further introduced through the port 14, the first piston 2 and the second piston 4 are driven to the most extreme positions and then stopped. Then, the water pressure in the second piston chamber 36 increases due to the pressure water force that is sent, and the water pressure 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 14 is stopped in this state, the water in the first cylinder chamber 17 is moved by the spring 22 which urges the first piston, and the water in the second piston chamber 36 is moved by the spring 22 which urges the second piston 4. spring 43
The water flows backward through the port 14 and is discharged to the outside through a throttle valve (not shown).

Note that even 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 the predetermined position, the rear Tubular valve 15 at end 12
is long to some extent and movable in the axial direction, so that its spherical tip reaches the opening of the center through hole 26 of the first piston 2 and abuts there to securely close the center through hole 26 of the first piston 2. Seal. Therefore, even if the first piston 2 cannot completely return to the rear end position due to foreign matter or the like, pressure water will not flow into the first cylinder chamber 17 unless the solenoid 16 is excited.

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.

[Brief explanation of drawings]

1 to 3 show a nozzle cylinder according to an embodiment of the present invention.
The figure is a sectional view of a main part showing a state in which the second piston 4 is driven, FIG. 3 is a sectional view of a main part showing a state in which both the first piston 2 and the second piston 4 are driven,
The figure is an overall conceptual diagram of a human body private parts cleaning device using a nozzle cylinder, and FIGS. 5 and 6 show the nozzle cylinder existing as prior art. In FIG. FIG. 6 is a partially cutaway sectional view showing a state when both the first piston 200 and the second piston 4 are driven in the distal direction. . 1... First cylinder, 2... First piston, 3... Second cylinder, 4... Second piston, 15... Tubular valve,
14... Port, 16... Solenoid, 26... Center through hole, 100... First cylinder, 200... First piston.

Claims (1)

[Claims for Utility Model Registration] A first cylinder whose rear end is sealed, and a first piston that is slidably mounted in a first cylinder chamber of the first cylinder and has a central through hole that is biased toward the rear end. a tubular second cylinder integrally formed with the first piston; and a nozzle that is slidably attached to the second cylinder chamber of the second cylinder and that spouts water at its tip and communicates with the nozzle. a tubular second piston having an axial hole and biased toward the rear end, the second piston having pressure water introduced into the second cylinder chamber on the rear end side of the second piston; and the protrusion of the first piston and the second piston by introducing 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. In the nozzle cylinder of the human body private parts cleaning device, the second piston protrudes in two stages and water is selectively ejected from the nozzle at the tip of the second piston to one of the two private parts of the human body. The rear end of the first cylinder has a center hole that communicates with the port and opens into the first cylinder chamber, and the center hole has a wall surface that is driven in the axial direction and forms the center through hole of the first piston. the first cylinder chamber of the first cylinder is closed and the center hole and the center through hole of the first piston communicate with each other, and the center hole, the first cylinder chamber and the A tubular valve that communicates with the center through hole of the first piston, and a drive device that drives the tubular valve in the axial direction to bring the tubular valve into contact with or separate from a wall surface forming the center through hole of the first piston. A nozzle cylinder for a human body private parts cleaning device.