JP2001132059A - Washing apparatus for the private parts of human body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle, having a simple construction and capable of surely draining smoothly and quickly the washing water entering a gap between a cylinder and a nozzle and of operating the nozzle. SOLUTION: A ring-shaped spring receiving portion 10, receiving a reset spring 33 for the inner peripheral surface at the front end side of a cylinder 3, is formed. This spring receiving portion 10 has an inner diameter which is slightly larger than the outer diameter of the nozzle 5, and the front end side of the nozzle 5 is supported freely slidably. A flat portion 25 is formed on the outer peripheral surface of a nozzle 5, and a gap between this flat portion 25 and a sliding surface 10a of the spring receiving portion 10 is used as a gap 26 for draining water, and the rotation of the nozzle 5 is prevented by a projection 11 formed on the sliding surface 10a and the flat surface 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for cleaning a local part of a human body after stool, and more particularly to a device for cleaning a local part of a human body in which a nozzle is operated only by water pressure.

[0002]

2. Description of the Related Art This type of human body cleaning apparatus installed in a toilet bowl is roughly classified into two types depending on the driving method of a nozzle. There are two types, one that moves forward and retracts and returns by a spring. As a human body local cleaning device using the latter water pressure, for example, Japanese Patent Publication No. 2-1570
No. 0 (hereinafter referred to as Prior Art 1), Japanese Patent Laid-Open No. 11-1
A cleaning apparatus described in, for example, Japanese Patent Application Laid-Open No. 81866 (hereinafter, referred to as Prior Art 2) is known.

[0003] The cleaning apparatus described in the prior art 1 employs a double cylinder system, and comprises an outer cylinder, an intermediate cylinder slidably fitted in the outer cylinder, and
A nozzle pipe slidably fitted in the intermediate cylinder, a pressure regulating valve incorporated in the nozzle pipe, two return springs for returning the intermediate cylinder and the nozzle pipe to their initial positions, and the like. The anal cleaning and bidet cleaning are performed by changing the moving stroke of the nozzle tube by switching the flow path according to. That is, at the time of anal washing, the nozzle pipe is made to protrude from the outer cylinder and the intermediate cylinder by supplying the washing water into the intermediate cylinder, and when the nozzle pipe stops and the water pressure in the intermediate cylinder rises, the pressure regulating valve opens. Wash water flows into the nozzle tube and is sprayed from the nozzle toward a local area. On the other hand, at the time of bidet cleaning, the cleaning water is supplied into the outer cylinder to make the intermediate cylinder protrude from the outer cylinder, and when the intermediate cylinder stops and the water pressure in the outer cylinder rises, the cleaning water is supplied into the intermediate cylinder. Then, the nozzle pipe protrudes from the intermediate cylinder, and when the nozzle pipe stops and the water pressure in the intermediate cylinder rises, the pressure regulating valve is opened, and the washing water flows into the nozzle pipe and is jetted from the nozzle toward the local area.

[0004] The cleaning apparatus described in Prior Art 2 has a cylinder including first, second, and third cylinders having different outer diameters and inner diameters, and a main flow path and a sub flow path for anal cleaning. A powerful nozzle that has a movable nozzle slidably fitted therein, a check valve that is incorporated in the movable nozzle, and that opens and closes the main flow path. And mild cleaning with weak cleaning strength. That is,
At the time of powerful cleaning, the movable nozzle protrudes from the cylinder by supplying the cleaning water into the third cylinder, and when the movable nozzle stops and the water pressure in the third cylinder rises, the check valve opens to move the cleaning water. The liquid is guided to the main flow path of the nozzle, and is injected from the main nozzle hole toward the anus.
On the other hand, during mild cleaning, cleaning water is supplied into the third cylinder to cause the movable nozzle to protrude from the cylinder. When the movable nozzle stops and the water pressure in the third cylinder rises, the check valve opens to supply the cleaning water. At the same time, the washing water is supplied from the outside of the cylinder to the sub-flow path of the movable nozzle, and the cleaning water is jetted toward the anus from the sub-nozzle hole at the same time as being guided to the main flow path of the movable nozzle and being sprayed toward the anus from the main nozzle hole. . In addition, the cleaning device cleans the entire circumference of the movable nozzle by supplying cleaning water to a gap between the first cylinder and the movable nozzle.

[0005]

The cleaning device described in the above-mentioned prior art 1 seals so that cleaning water does not enter a gap between the intermediate cylinder and the nozzle pipe.
Because it cannot be completely sealed and does not have a flow path for escaping the washing water that enters the gap,
If a small amount of cleaning water enters the gap and accumulates, it causes a large resistance when the nozzle tube advances. Therefore,
There has been a problem that the operation of the nozzle tube is slow and requires an unnecessarily large water pressure. Further, there is also a problem that the cleaning water accumulated in the gap is corroded and unsanitary unless it is used for a long period of time, and there is a problem that the nozzle pipe does not smoothly advance and retreat when scale is attached to the nozzle pipe or the intermediate cylinder.

In the cleaning apparatus described in Prior Art 2, cleaning water is forcibly supplied to a gap between the cylinder and the movable nozzle to clean the entire circumference of the movable nozzle, and the cleaning water is supplied to the front end opening of the cylinder. Although the above-mentioned problem is solved because the water is discharged from the nozzle, it is necessary to provide a large gap for discharging the cleaning water between the opening at the front end of the cylinder and the outer periphery of the nozzle. Therefore, there is a problem that the movable nozzle is apt to rattle when the movable nozzle moves forward and backward. Further, since the cleaning water is forcibly supplied to the gap between the cylinder and the movable nozzle, there is a problem that the structures of the piping and the switching valve are complicated.

[0007] Further, since the above-mentioned conventional cleaning devices all incorporate a check valve in the nozzle, the structure of the nozzle itself becomes complicated and the manufacturing cost becomes high, and the cost for operating the check valve is high. There was a problem that water pressure was required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to simplify the structure of a nozzle and to reliably discharge washing water entering a gap between a cylinder and a nozzle. It is an object of the present invention to provide a human body local cleaning device capable of quickly operating a nozzle.

[0009]

According to a first aspect of the present invention, there is provided an apparatus for cleaning a local part of a human body, comprising a cleaning unit attached to a toilet for cleaning a local part of a body after stool. A cylinder having a spring receiving portion formed therein, a piston which is inserted into the cylinder so as to be able to move forward and backward, and which moves forward by the water pressure of the washing water supplied to the cylinder, and which advances and retreats through the spring receiving portion into the cylinder. A nozzle which is freely inserted and protrudes from the cylinder by the pressing of the piston by forward movement, and is interposed between a flange provided on the rear end side of the nozzle and the spring receiving portion to urge the nozzle in the piston direction. The cleaning unit is constituted by a return spring for returning to the initial position, and a flat portion and a spring in which a gap for draining water is formed between the spring receiving portion of the cylinder and the nozzle on the outer peripheral surface of the nozzle. Those formed by the parts.

According to a second aspect of the present invention, in the first aspect, a rotation preventing portion for preventing rotation of the nozzle is provided on at least a part of the flat portion formed on the outer peripheral surface of the nozzle and the spring receiving portion.

In the present invention, the spring receiving portion has not only a function of receiving one end of the return spring but also a function of supporting and guiding the nozzle so as to be able to move forward and backward. Since the nozzle moves back and forth with respect to the cylinder, it is inevitable that washing water enters the gap between the cylinder and the nozzle during the movement of the nozzle, but this washing water is discharged to the outside of the cylinder from the gap for draining. Is done. The gap between the flat portion of the nozzle and the inner peripheral surface of the cylinder and the gap for drainage form a drainage path for washing water.
The flat portion and the rotation preventing portion prevent the rotation of the nozzle.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a sectional view of a cleaning unit according to an embodiment of the present invention when not in use, and FIG.
(A), (b) is a perspective view and a rear view of the piston, FIG.
FIG. 4 is an enlarged sectional view taken along line III-III of FIG. 1, FIG. 4 is a sectional view showing a state at the time of anal washing, and FIG. 5 is a sectional view showing a state at the time of bidet washing. In these figures, the human body local cleaning apparatus according to the present invention includes a hydraulic cleaning unit 2 which is incorporated in a toilet (not shown) at a required angle downward and downward so that the front end is lower than the rear end. I have.

The washing unit 2 is inserted into the cylinder 3 so as to be capable of moving forward and backward, and the piston 4 is operated by the water pressure of the washing water 7. At the time of washing, the nozzle 5 which advances by water pressure following the piston 4, the flow paths 6a to 6e of the cleaning water 7, and the opening and closing of the flow paths 6b to 6e
Switching valves V1 to V4, a flow control valve V5, and the like.

The cylinder 3 is made of a plastic pipe having a front end opened and a rear end closed and having a different outside diameter and inside diameter from a plastic. The front half constitutes a small diameter cylinder 3A, and the rear half is a large diameter cylinder 3B. Is composed. For this reason, a step portion 8 is provided at the connection portion between the small-diameter cylinder 3A and the large-diameter cylinder 3B on the inner peripheral surface of the cylinder 3 as a locking portion for restricting the forward movement of the piston 4. Near the front end of the inner peripheral surface of the small diameter cylinder 3A, a cylindrical locking portion 9 for restricting the forward movement of the nozzle 5 is provided.
The spring receiving portion 10 is provided at a front end side of the spring. The spring receiving portion 10 receives the front end of a return spring 33 to be described later, and slidably supports and guides the nozzle 5. The inner diameter of the spring receiving portion 10 is smaller than the inner diameter of the locking portion 9 and smaller than the outer diameter of the nozzle 5. It is formed in a slightly large ring shape. On the sliding surface 10a of the spring receiving portion 10 which supports and guides the nozzle 5, a projection 11 constituting a rotation preventing portion of the nozzle 5 is integrally provided. As shown in FIG. 3, a total of four protrusions 11 are formed, two by two so as to face each other with a phase difference of 180 ° in the circumferential direction of the sliding surface 10a.

On the rear wall 12 of the cylinder 3, a washing water inlet 14 connected to a water supply pipe 13 is provided. The water supply pipe 13 includes an electromagnetic valve 15 and is connected to a water pipe (not shown) directly or via a pump. On the outer peripheral surface of the cylinder 3, a nozzle cleaning water supply port 17, a nozzle operation supply port 18, and first and second discharge ports 19 and 2 are provided.
0 is provided. Cleaning water supply port 17 for nozzle and second
Are formed on the small-diameter cylinder 3A side so as to be located before and after the locking portion 9, and the flow passages 6 e,
6d. Supply port 1 for nozzle operation
8 and the first discharge port 19 are located at the front and rear sides of the stepped portion 8 so that the small-diameter cylinder 3A and the large-diameter cylinder 3B
And are connected to the flow paths 6b and 6a, respectively. The channels 6a, 6c and 6e are connected in series, and the channels 6b and 6d are connected to the upstream and downstream of the channel 6c with the switching valve V2 interposed therebetween.

The switching valves V1 to V4 are connected to the flow paths 6b,
6c, 6d, and 6e, respectively. These switching valves V1 to V4 are controlled to be opened and closed by being driven by a driving signal from a controller (not shown). During anal cleaning, switching valves V2 and V4 are opened, switching valves V1 and V3 are closed, and one V1, V3, V during cleaning
4 is opened and the switching valve V2 is closed.
The flow rate of the washing water 7 supplied to the nozzle 5 is controlled by the flow control valve V
5 by manual operation. Note that the flow control valve V5 is connected to the flow path 6e, but may be the flow path 6a.

In FIG. 2, the piston 4 is made of synthetic resin, and has a disc-shaped pressure receiving plate 4A and four guides integrally projecting from the pressure receiving surface (rear surface) of the pressure receiving plate 4A so as to be spaced apart from each other. A clearance between the pressure receiving plate 3A, the guide piece 4B and the inner peripheral surface of the large-diameter cylinder 3B for allowing the washing water in the large-diameter cylinder 3B to escape to the small-diameter cylinder 3A at the end of the cleaning. Is set. A conical concave portion 21 is formed at the center of the front surface of the pressure receiving plate 4A, and a conical convex portion 21A is integrally provided at the center of the pressure receiving surface. Recess 21
Form a support portion for supporting the rear end side of the nozzle 5. The guide pieces 4B are formed radially at equal intervals in the circumferential direction of the pressure receiving plate 4A so that the inner ends face each other at the center of the piston, and the outer end faces contact the inner circumferential surface of the large-diameter cylinder 3B. This prevents the piston 4 from tilting. Further, the guide pieces 4B prevent the cleaning water from remaining. In other words, when the piston is formed in a cup shape having one end opened by a pressure receiving plate and a cylindrical body integrally projecting from the rear surface of the pressure receiving plate, washing water is accumulated inside,
If the guide pieces 4B are separated from each other, these guide pieces do not form a pool of the cleaning water 7. That is, when the four guide pieces 4B are formed so as to be separated from each other, the two separated guide pieces 4B, 4B
Even if is facing diagonally upward, the V-shaped space formed by these two guide pieces does not form a pool of washing water,
Therefore, the washing water 7 does not accumulate in the piston 4. A notch 22 is formed in the center of the rear end face of each guide piece 4B so that the washing water inlet 14 is not blocked. The guide piece 4B is not limited to the one formed radially, and may be one in which a plurality of arc-shaped projections are provided in the circumferential direction along the outer edge of the pressure receiving surface of the pressure receiving plate 4A. Good.

The nozzle 5 is formed of a synthetic resin in the shape of an elongated round bar having an outer diameter slightly smaller than the inner diameter of the spring receiving portion 10, and has an anal washing passage 23 and a bidet washing passage 24 formed therein. . The front end side opening of the anal washing passage 23 is formed on the front end side upper surface of the nozzle 5 to form a spout 23a, and the rear end side opening 23b is provided when the nozzle 5 advances and stops during anal washing. The cleaning water supply port 17 is formed at a position facing the cleaning water supply port 17. The front end side opening of the bidet washing passage 24 is formed on the front end side upper surface of the nozzle 5 at a position forward of the jetting outlet 23a to form a spout 24a, and the rear end side opening 24b is used for cleaning bidet washing. The nozzle 5 is formed at a position facing the nozzle cleaning water supply port 17 when the nozzle 5 advances and stops. In the drawing, each of the ejection ports 23a and 24a is shown by one small hole, but is actually constituted by a plurality of small holes.

Two flat portions 25 parallel to each other are formed in a central portion of the outer peripheral surface of the nozzle 5 excluding both end portions, specifically, in a portion sliding along the sliding surface 10a of the spring receiving portion 10. The flat portion 2 is formed corresponding to the projection 11.
The gap between the spring 5 and the spring receiving portion 10 forms a gap 26 for draining water. The protrusion 11 and the flat portion 25 are opposed to each other in close proximity to each other, thereby preventing the nozzle 5 from rotating. The gap 26 for draining water and the gap 27 between the inner peripheral surface of the cylinder 3 and the locking portion 9 and the flat portion 25 form a drainage passage 28 for washing water.

A flange 30 and a pin 31 are integrally formed on the outer peripheral surface and the rear end surface of the nozzle 5 on the rear end side. The flange 30 has an outer diameter slightly smaller than the inner diameter of the small-diameter cylinder 3A, and a seal member 32 is mounted on the front side. The pin 31 is integrally provided at the center of the rear end face of the nozzle 5 and is inserted into and supported by the recess 21 of the piston 4. Therefore, the nozzle 5 is supported at two points at the front and rear ends, that is, the front end side outer peripheral surface is supported by the sliding surface 10 a of the spring receiving portion 10, and the rear end side is supported by the pin 31 and the concave portion 21, and the nozzle 5 is inclined. Instead, the piston 4 advances and retreats with the axial center substantially aligned with the piston 4. The pin 31 separates the piston 4 from the nozzle 5 in order to supply the washing water flowing into the small-diameter cylinder 3A from the nozzle operation supply port 18 to the back side of the nozzle 5.

A return spring 33 is mounted on the outer periphery of the nozzle 5 to urge the nozzle 5 rearward and to return to the initial position shown in FIG. The return spring 33 is composed of a compression coil spring and is elastically mounted between the spring receiving portion 10 and the seal member 32.

Next, the cleaning operation by the cleaning unit 2 having such a structure will be described. At the time of non-washing, the nozzle 5 is held at the initial position by the return spring 33, thereby pressing the piston 4 against the rear wall 12 of the cylinder 3 as shown in FIG. In this state, the solenoid valve 15 and the switching valves V1 to V4 are closed.

When the user operates the switch for anal cleaning after the stool, the solenoid valve 15 and the switching valves V2 and V4 are opened. When the solenoid valve 15 is opened, the washing water 7 supplied from the water supply pipe 13 flows into the large-diameter cylinder 3B through the washing water inlet 14, and presses the piston 4 by its water pressure to move it forward. Therefore, the nozzle 5 also advances integrally with the piston 4 against the return spring 33 and projects from the front end opening 34 of the cylinder 3. The piston 4 moves forward by the maximum stroke and comes into contact with the step 8 and stops. Accordingly, the nozzle 5 also stops at this position, and in this state, as shown in FIG. 4, the rear end side opening 23b of the anal cleaning passage 23 matches the nozzle cleaning water supply port 17, and the anal cleaning is started. . That is,
When the piston 4 moves forward and stops, the cleaning water 7 in the large-diameter cylinder 3B is removed from the first discharge port 19-flow path 6a-flow path 6c.
-Since the water is supplied to the anal cleaning passage 23 from the nozzle cleaning water supply port 17 through the flow path 6e, the water is sprayed upward from the jet port 23a to perform anal cleaning.

After the anal cleaning, when the switch is turned off,
Since the supply of the cleaning water 7 is stopped by closing the solenoid valve 15, the water pressure of the cleaning water 7 decreases, and the nozzle 5 gradually retreats due to the elasticity of the return spring 33 and returns to the initial position shown in FIG. Then, the piston 4 is pressed against the rear wall 12 of the cylinder 3. At this time, the washing water remaining in the cylinder 3 is discharged to the drain passage 2.
Since it is discharged to the outside through the front end opening 34 of the cylinder 3 through 8, it does not remain in the gap 27 between the cylinder 3 and the nozzle 5.

When the user operates the bidet cleaning switch after the use, the solenoid valve 15 and the switching valves V1, V3, V4 are opened. When the solenoid valve 15 is opened, the washing water 7 supplied from the water supply pipe 13 passes through the washing water inlet 14 and the large-diameter cylinder 3
B, and the piston 4 is pressed by the water pressure and moved forward. Therefore, the nozzle 5 also advances integrally with the piston 4 against the return spring 33 and projects from the front end opening 34 of the cylinder 3. The piston 4 moves forward by the maximum stroke and comes into contact with the step 8 and stops. When the piston 4 stops, the nozzle 5 is no longer moved by the piston 4, but the washing water 7 supplied into the large-diameter cylinder 3B is supplied to the first discharge port 19-flow path 6a-flow path 6b-supply for nozzle operation. Since the water is guided into the small-diameter cylinder 3A through the port 18, the water further advances by the water pressure, and stops when the flange 30 contacts the rear end of the locking portion 9 via the seal member 33 as shown in FIG. . In this state, the bidet cleaning passage 24
The rear end side opening 24b coincides with the nozzle cleaning water supply port 17, and the bidet cleaning is started. That is, when the nozzle 5 advances by the maximum stroke and stops, the cleaning water 7 guided to the small-diameter cylinder 3A passes through the second discharge port 20-flow path 6d-flow path 6e from the cleaning water supply port 17 for the nozzle. Since it is supplied to the bidet cleaning passage 24, it is jetted upward from the jet port 24a to perform bidet cleaning.

The operation of returning the piston 4 and the nozzle 5 after the bidet cleaning is exactly the same as that during the anal cleaning. At this time, the washing water remaining in the cylinder 3 is discharged to the outside from the front end opening 34 of the cylinder 3 through the drain passage 28.
It does not remain in the gap 27 between the cylinder 3 and the nozzle 5.

As described above, in the apparatus for cleaning a human body part according to the present invention, the drainage passage 28 for the washing water is provided between the cylinder 3 and the nozzle 5, so that the washing of the anus and the washing of the bidet are completed at any time. The cleaning water remaining in the cylinder 3 due to the return operation of the piston 4 and the nozzle 5 is
Can be discharged to the outside from the front end opening portion 34 of the first member. Therefore, the cleaning water does not remain in the gap 27 between the cylinder 3 and the nozzle 5, and the nozzle 5 can be quickly operated at the time of starting the next cleaning operation. Also,
If the washing water does not remain, corrosion of the washing water, adhesion of scale, etc. do not occur, and the next user is not uncomfortable. Further, since the inner diameter of the spring receiving portion 10 is slightly larger than the outer diameter of the nozzle 5, the spring receiving portion 10 supports the nozzle 5 in a stable state and prevents rattling during operation. Therefore, the reciprocating operation of the nozzle 5 is also good. Further, since there is no need to incorporate a check valve into the nozzle 5, the structure of the nozzle 5 itself can be made simple and inexpensive.

[0028]

As described above, according to the apparatus for cleaning a human body according to the present invention, since a gap for draining water is formed between the spring receiving portion of the cylinder and the nozzle, the gap between the cylinder and the nozzle is formed. The entered washing water can be reliably drained. Accordingly, there is provided a sanitary cleaning apparatus in which the corrosion of residual cleaning water, adhesion of scale, and the like do not occur, and the nozzle is well advanced and retracted. Further, the structure of the nozzle is simple, and the rotation of the nozzle can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view when a cleaning unit according to an embodiment of the present invention is not used.

FIGS. 2A and 2B are a perspective view and a perspective view of a piston.

FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a cross-sectional view showing a state during anal cleaning.

FIG. 5 is a cross-sectional view showing a state during bidet cleaning.

[Explanation of symbols]

2 ... Cleaning unit, 3 ... Cylinder, 4 ... Piston, 5 ...
Nozzle, 7: washing water, 10: spring receiving part, 11: projection for preventing rotation, 25: flat part, 26: gap for draining, 27
... gap, 28 ... drainage passage, 30 ... flange, 33 ... return spring.

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission Date] November 5, 1999 (1999.11.
5)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

Claims (2)

[Claims] 1. A human body local cleaning device provided with a cleaning unit attached to a toilet for cleaning a local part of a body after stool, comprising: a cylinder having a spring receiving portion formed on an inner peripheral surface; A piston which is inserted into the cylinder and moves forward by the water pressure of the washing water supplied to the cylinder, and which is inserted into the cylinder through the spring receiving portion so as to be able to move forward and backward, and protrudes from the cylinder by the pushing by the advance of the piston. The cleaning unit is constituted by a nozzle and a return spring interposed between a flange provided on the rear end side of the nozzle and the spring receiving portion to urge the nozzle in a piston direction and return to the initial position. A body part cleaning device, characterized in that a gap for draining water is formed between a spring receiving portion of the cylinder and the nozzle by a flat portion formed on an outer peripheral surface of the nozzle and a spring receiving portion. 2. The apparatus according to claim 1, wherein a rotation preventing portion for preventing rotation of the nozzle is provided on at least a part of the flat portion formed on the outer peripheral surface of the nozzle and the spring receiving portion. Human body local cleaning device.