JP2669342B2 - Fluid control valve and water flow controller for sanitary washing toilet seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid control valve capable of switching a flow path and controlling a flow rate, and a water flow control device suitable for a sanitary washing toilet seat for cleaning a human body part after toilet.

[0002]

2. Description of the Related Art A sanitary washing toilet seat is a device intended for washing the anus after toilet, and for washing the female part during small use and menstruation. The bidet cleaning requires a soft feeling and the like. To cope with this, there is a sanitary washing toilet seat having two dedicated nozzles. The following fluid control valves have been proposed to selectively switch between the two systems of nozzles.

FIG. 8 shows a sanitary washing toilet seat using a conventional fluid control valve of this type (for example, Japanese Patent Laid-Open No. 60-51237). In the figure, 1 is a water supply pump provided in a water supply passage 2 for cleaning water, 3 is a bidet cleaning nozzle for cleaning a female part, 4 is an anus cleaning nozzle for cleaning an anus, and 5 is a bidet cleaning. A fluid control valve for selecting a nozzle and an anal irrigation nozzle, and 6 is a switching knob thereof. Reference numeral 7 denotes a hot water tank, and reference numeral 8 denotes an electromagnetic valve linked to the cleaning knob 9.

When the washing knob 9 is turned, the solenoid valve 8 is opened and the pump 1 is operated, and the washing water is sent to the fluid control valve 5 by the water pressure of the pump 1, and by switching the fluid control valve 5, the bidet washing nozzle 3 and the anus. Cleaning water is selectively spouted from the cleaning nozzle 4 to perform bidet cleaning and anal cleaning.

The fluid control valve 5 includes a housing 13 having an inflow port 10, an outflow port 11 communicating with the bidet cleaning nozzle 3, and an outflow port 12 communicating with the anal cleaning nozzle 4, and a valve body 14 rotatable in the housing 13. And has its valve body 14
The O-rings 15 and 16 are fitted in the grooves 17 and 18 for sealing the housing 13 and the valve body 14. Reference numeral 19 denotes a valve lid, reference numeral 20 denotes a water passage inside the valve body 14, and reference numeral 21 denotes an outlet of the water passage 20.

When the washing water is supplied from the hot water tank 7 to the inflow port 10 in the above-described structure, as shown in FIG. 8, the washing water is passed through the water passage 20 in the valve body 14 and the outlet 21 to wash the bidet washing nozzle 3. The water flows and the washing water spouts from the bidet washing nozzle 3 to perform the bidet washing.

When the switching knob 6 of the fluid control valve 5 is turned, the valve body 14 is rotated, and the water channel is an outlet 12 to the anus washing nozzle 4.
The washing water is spouted from the anal washing nozzle 4 in the same manner as described above, and the anal washing is performed.

As described above, the cleaning nozzles 3 and 4 can be selectively switched by switching the fluid control valve 5, and the discharge flow rate can be adjusted by controlling the rotation speed of the water supply pump 1.

[0009]

However, in the conventional water flow control device as described above, if the diameter gap 22 between the housing 13 of the fluid control valve 5 for switching the nozzle and the valve body 14 is large, the anus washing is performed. Although the water is flowing to the anus washing nozzle 4, the water leaks from the portion of the diameter clearance 22 toward the outlet 11 of the bidet washing nozzle 3 and is washed by the anus washing nozzle 4. At the same time, washing water leaks from the bidet washing nozzle 3.

For this reason, it is necessary to reduce the radial clearance 22 between the housing 13 and the valve body 14, and this processing requires high accuracy and increases the processing cost, and the yield of non-defective products is poor and the productivity cannot be improved. There was such a problem.

Further, when the radial clearance 22 between the housing 13 and the valve body 14 is to be reduced in order to seal the housing 13 and the valve body 14, the valve body 14 is affected by dimensional variations.
However, there is a problem that the housing 13 has a tight fit, the torque required for rotationally driving the valve body 14 becomes large, and even if the switching knob 6 is to be rotated, it is hard and cannot be rotated. .

Further, for the purpose of solving the above problems, FIG.
As shown in, for example, Japanese Patent Application Laid-Open No. 60-51237, a groove 2 is formed around the outlet 24 of the valve body 23 so as to surround the outlet 24.
5, a fluid control valve 27 having an elastic seal member 26 in the groove 25 has been proposed. However, in this case, when the sealing member 26 crosses the lateral holes 29, 30 of the housing 28 by rotating the valve body 23, the elastic sealing member 26 is deformed by being pushed into the lateral holes 29, 30 or partially damaged. There were challenges.

When the fluid control valve 27 is used not only for switching the flow path but also for controlling the rotation angle of the valve element 23 to control the flow rate, permanent deformation strain of the elastic seal member 26 is generated, resulting in an accurate correction. There was a problem in flow control that it could not be used.

The present invention solves the above-mentioned problems.
A first object of the present invention is to provide a fluid control valve 31 that can obtain a flow rate according to the valve opening with a simple configuration and that has a small required drive torque.

A second object is to make it possible to minimize the leakage flow rate to the other flow path with a simple structure and to reduce the required driving torque, and to selectively switch a plurality of flow paths and control the flow rate in each flow path. The object is to provide a fluid control valve 43 which enables this.

A third object is that a single drive means and a simple structure can minimize a leakage flow rate to a portion other than a predetermined flow passage, a required drive torque is small, and a plurality of flow passages can be selectively switched. An object of the present invention is to provide a small, low-cost, highly durable and highly reliable fluid control valve 56 that enables flow rate control in each flow path.

A fourth object is to provide a first washing nozzle and a second anus washing nozzle separately, and a water flow suitable for a sanitary washing toilet seat capable of selectively switching the nozzles and adjusting the water force with a simple structure. It is to provide a control device.

[0018]

In order to achieve the first object, a fluid control valve of the present invention comprises a housing having an inflow passage and an outflow passage, and a valve body rotatably provided in the housing. And an outlet portion of the flow passage inside the valve body for communicating or blocking the inflow passage and the outflow passage is provided on a sliding contact surface with the housing, and the valve body has a hole shape of the outlet portion .
The shape is formed by the protrusions made of polymer material along the flow path.
It is a thing .

In order to achieve the above-mentioned second object, the fluid control valve of the present invention is such that the housing has a plurality of outflow passages respectively branched from the inflow passage.

In order to achieve the third object, the fluid control valve of the present invention comprises a drive means having a motor for rotating the valve body, and a plurality of outflow passages by controlling a rotation angle of the motor. And rotation angle control means for controlling flow rate control.

In order to achieve the fourth object, the water flow control device of the present invention comprises a hot water tank for heating the wash water provided in a water supply passage for supplying the wash water, an inflow passage communicating with the hot water tank, and the inflow. A housing having a first outflow passage and a second outflow passage respectively branched from the passage, a valve body rotatably provided in the housing, and an outlet portion of the flow passage inside the valve body. A polymer provided on a sliding contact surface with the housing, wherein a hole shape of the outlet portion is formed along a flow path.
A convex portion made of a material , a fluid control valve including driving means having a stepping motor for rotating the valve body,
First and second cleaning nozzles respectively communicating with the first and second outflow passages of the fluid control valve, a cleaning switch for selectively driving the first and second cleaning nozzles, and a water pressure adjusting switch for adjusting the amount of water. And rotation angle control means for controlling the rotation angle of the stepping motor in accordance with a signal from the operation means.

[0022]

The fluid control valve according to the present invention has a hole shape of the outlet portion at the outlet portion of the flow passage provided in the valve body rotating in the housing.
By providing a convex part made of a polymer material that is formed along the flow path , this convex part reduces the clearance on the sliding contact surface with the housing, so leakage from the clearance on the outer circumference of the valve body is significantly reduced However, the flow rate of leakage to other than the predetermined flow path can be minimized, and a flow rate corresponding to the valve opening can be obtained.

In addition, whether the polymer material provided on the valve body
The convex contact portion reduces the sliding contact area and reduces the driving torque required to rotate the valve element.

Further, in the fluid control valve of the present invention, an outlet portion of a flow passage provided in a valve body that rotates in a housing having a plurality of outflow passages, and a hole shape of the outlet portion is surrounded along the flow passage .
By providing the convex portion made of a polymeric material formed in this way, the convex portion reduces the clearance on the sliding contact surface with the housing, and the leakage from the clearance on the outer circumference of the valve body is significantly reduced. This minimizes leakage to the other channel,
Selection switching of a plurality of flow paths and flow rate control in each flow path become possible.

The fluid control valve of the present invention has a housing having a plurality of outflow passages, a substantially cylindrical shape having a hole at an outer peripheral outlet portion .
By providing a motor for rotationally driving a valve body having a convex portion made of a polymeric material formed along the flow path, and a rotation angle control means for the motor, a single drive means and a simple structure are provided. Miniaturization of the fluid control valve that can minimize the flow rate of leakage to other than the specified flow path, the required drive torque is small, and can switch the selection of multiple flow paths by remote control and control the flow rate in each flow path. In addition, cost reduction and improvement of durability reliability can be achieved.

Further, in the water flow control device according to the present invention, the stepping motor is used as a driving means, and the selection of the first and second washing nozzles and the hole of the outlet portion for adjusting the flow rate of the washing water discharged from each washing nozzle. Enclose the shape along the flow path
A fluid control valve having a valve body formed with a convex portion made of a polymeric material, an operating means for the cleaning nozzle, and a rotation angle control means for controlling the rotation angle of the stepping motor by a signal from the operating means. Since it is provided, the pulse signal supplied to the stepping motor is controlled by the signal from the operating means, and the first washing nozzle for bidet washing and the second washing nozzle for anal washing are selectively selected. A compact water flow control device that can be switched and that can finely adjust the amount (water pressure) of the cleaning water discharged from the first and second cleaning nozzles in accordance with the signal from the operating means is enabled.

[0027]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a constitutional view of a fluid control valve 31 showing a first embodiment of the present invention, and FIGS. 2A to 2C are sectional views taken along the line AA of FIG. In the figure, reference numeral 32 denotes a housing, which has an inflow path 33 and an outflow path 34. Reference numeral 35 denotes a valve element rotatably provided in the housing 32, and a flow path 36 that connects or blocks the inflow path 33 and the outflow path 34 is formed inside. Outlet part 3 of flow path 36 of valve body 35
7 is provided on a sliding contact surface 38 with the housing 32,
The outlet 37 is formed so as to surround the hole shape along the flow path.
The convex portion 39 made of a polymer material is formed integrally with the valve body 35. 40 and 41 are seal packings, 4
2 is a rotary knob.

The operation of this embodiment having the above configuration will be described. FIG. 2A shows a valve closed state, in which the flow passage 36 communicating with the inflow passage 33 does not communicate with the outflow passage 34 and surrounds the hole shape of the outlet portion 37 along the flow passage. The convex portion 39 made of a polymer material formed in the above section makes the clearance between the convex portion 39 and the housing 32 small and prevents fluid leakage. FIG. 2B shows a valve half-open state, and FIG. 2C shows a valve fully open state. Here, since the convex portion 39 can be molded integrally with the valve body 35 by a polymer material, the productivity is good, and the contact area with the housing 32 is small in part, so that the drive required when the valve body 35 is rotated is required. The torque can be kept small.

Further, as shown in FIG. 9, a groove 25 is provided on the outer periphery of the valve body 23 so as to surround the outlet portion 24, and an elastic seal member 26 is provided in the groove 25. , When the valve member 23 is rotated and the seal member 26 traverses the lateral holes 29, 30 of the housing 28, the elastic seal member 26 is deformed by being pushed into the lateral holes 29, 30 or partially damaged. Thus, not only the valve body 35 can rotate lightly and smoothly, but also the flow rate can be controlled according to the rotation angle of the valve body 35, and the durability can be improved.

The above, according to this embodiment, as mentioned, high so as to surround along the hole shape of the outlet portion 37 of the valve body 35 in the flow path
Since the convex portion 39 made of a molecular material is provided, the convex portion 3
9 reduces the clearance of the sliding contact surface 38 with the housing 32, the leakage from the clearance of the outer periphery of the valve body 35 is significantly reduced, and the leakage flow rate to other than the predetermined flow path can be minimized. Ma
The convex portion 39 is not an elastic body such as rubber, but is integrated with the valve body 35.
Since it is a molded polymer material, the protrusions 39 change like rubber.
The opening surface according to the rotational position of the valve body 35 without being formed
An accurate flow rate can be obtained without changing the product.

The convex portion 39 provided on the valve body 35
As a result, the sliding contact area is reduced, the drive torque required to rotate the valve element 35 can be reduced, and a light and smooth rotational operation can be performed. In addition, the convex portion 39 is made of elastic material such as rubber.
Since it is a polymer material molded into the valve body 35 instead of the body, the convex portions
39 is a rubber-like hole of the outflow passage 34 of the housing 32.
Be careful not to deform it so that the edges are hard
The friction coefficient is small and it does not stick.
The driving torque required for rotation can be reduced,
It can be rotated easily.

FIG. 3 is a constitutional view of a fluid control valve 43 showing a second embodiment of the present invention, and FIGS. 4 (a) to 4 (d) are shown in FIG.
FIG. In the figure, reference numeral 44 denotes a housing, and an inflow path 45, first and second outflow paths 46,
47. Reference numeral 48 denotes a valve element that is rotatably provided in the housing 44, and a flow path 49 that selectively communicates the inflow path 45 with the first or second outflow path 46, 47 is formed therein. . Outlet portion 5 of flow path 49 of valve body 48
0 is provided on the sliding contact surface 51 with the housing 44,
Polymer formed along the hole-shaped flow path of the outlet part 50
A convex portion 52 made of a material is formed integrally with the valve body 48. 53 and 54 are seal packings, and 55 is a rotary knob.

The operation of the present embodiment in the above configuration will be described. FIG. 4A shows a valve closed state, in which the flow path 49 communicating with the inflow passage 45 does not communicate with either the first or second outflow passages 46, 47, and the outlet portion 50.
The convex portion 52 formed so as to surround the gap makes the gap between the convex portion 52 and the housing 44 small and prevents fluid leakage. 4B, the valve body 48 is rotated so that the outlet portion 50 faces the first outflow passage 46 of the housing 44 and the first outflow passage 46 is fully opened. FIG. 4C shows the valve body 48. Is rotated and the second outflow passage 47 is half-opened, and FIG.
8 further shows a state in which the second outflow path 47 is fully opened by further rotating 8. Here, since the convex portion 52 can be molded integrally with the valve body 48 by a polymer material, the productivity is good, and the contact area with the housing 44 is a small part, so that the driving force required when the valve body 48 is rotated. The torque can be kept small.

Further, as shown in FIG. 9, a groove 25 is provided on the outer periphery of the valve body 23 so as to surround the outlet portion 24 of the valve body 23, and an elastic seal member 26 is provided in the groove 25. , When the valve member 23 is rotated and the seal member 26 traverses the lateral holes 29, 30 of the housing 28, the elastic seal member 26 is deformed by being pushed into the lateral holes 29, 30 or partially damaged. Thus, not only the valve body 48 can rotate lightly and smoothly, but also the flow rate can be controlled according to the rotation angle of the valve body 48, and the durability can be improved.

As described above, according to this embodiment, the hole shape of the outlet portion 50 of the valve body 48 is formed in a high shape along the flow path.
By providing the convex portion 52 made of the secondary material , the convex portion 52
Reduces the clearance of the sliding contact surface 51 with the housing 44, significantly reduces the leakage from the clearance on the outer circumference of the valve body 48, and minimizes the leakage flow rate to other than the predetermined flow path. Ma
In addition, the convex portion 52 is formed into a valve body 48 instead of an elastic body such as rubber.
The convex 52 is deformed like rubber.
And the opening area according to the rotational position of the valve body 48 is
An accurate flow rate can be obtained without fluctuation.

The convex portion 52 provided on the valve body 48
As a result, the sliding contact area is reduced, the drive torque required to rotate the valve element 48 can be reduced, and a light and smooth rotational operation can be performed. In addition, the convex portion 52 is made of elastic material such as rubber.
Since it is a polymer material molded into the valve body 48 instead of the body,
52 is a rubber-like outflow passage 46, 47 of the housing 44.
That it does not deform so that it does not fit into the edge of the hole,
Since the friction coefficient is smaller than rubber and it does not stick,
The drive torque required to rotate 48 can be reduced,
It can be rotated lightly and smoothly.

Therefore, the flow rate of leakage into the other flow path can be minimized with a simple configuration, and the required driving torque is small.
It is possible to provide a fluid control valve 43 that enables selection switching of a plurality of flow paths and flow rate control in each flow path.

FIG. 5 is a constitutional view of a fluid control valve 56 showing a third embodiment of the present invention, and FIGS. 6 (a) to 6 (d) are shown in FIG.
It is CC sectional drawing of. In the figure, reference numeral 57 denotes a housing, and an inflow path 58, first and second outflow paths 59,
60. Reference numeral 61 denotes a substantially cylindrical valve body rotatably provided in the housing 57, and has an inflow passage 62 therein.
A flow path 62 is formed which selectively communicates with the first or second outflow paths 59 and 60. Flow path 62 of valve body 61
The outlet portion 63 of the valve body 6 is provided on the sliding contact surface 64 with the housing 57, and the convex portion 65 made of a polymer material formed so as to surround the hole shape of the outlet portion 63 along the flow path is used as the valve body 6.
It is integrally molded with 1. Reference numerals 66 and 67 denote seal packings, and reference numeral 68 denotes a driving means constituted by a motor capable of rotating forward and backward. The output shaft 69 of the motor 68 has an O-shaped cross section and is inserted into a hole 70 of the valve body 61 having the same O-shaped cross section. The hole diameter of the mounting flange 71 of the motor 68 is larger than the diameter of the mounting boss 72 of the housing 57. , With mounting clearance
It is a configuration that absorbs the eccentricity of the axis between the housing 57 and the valve element 61. The height of the mounting boss 72 of the housing 57 is larger than the thickness of the mounting flange 71 of the motor 68, and the motor 68 compensates for eccentricity within the above-mentioned mounting clearance even after being tightened with the screws 73 and 74. This is a configuration having freedom of movement.

The operation of this embodiment with the above configuration will be described. FIG. 6A shows a valve closed state, in which the flow passage 62 communicating with the inflow passage 58 does not communicate with either the first or second outflow passages 59, 60, and the outlet portion 63.
Polymer material formed so as to surround the hole shape along the flow path
The clearance between the housing 65 and the housing 57 is reduced by the convex portion 65 to prevent fluid leakage. FIG. 6 (b)
The state where the valve body 61 is rotated and the outlet portion 63 is directed toward the first outflow passage 59 of the housing 57 and the first outflow passage 59 is fully opened, FIG. Second outflow channel 6
6 shows a state in which 0 is half opened, and FIG. 6D shows a state in which the valve body 61 is further rotated and the second outflow passage 60 is fully opened. Here, since the convex portion 65 can be molded integrally with the valve body 61 from a polymer material, the productivity is good, and since the contact area with the housing 57 is a small portion, the valve body 6
The required driving torque at the time of rotation of one can be kept small.

Further, as shown in FIG. 9, a groove 25 is provided on the outer periphery of the valve body 23 so as to surround the outlet portion 24, and an elastic seal member 26 is provided in the groove 25. , When the valve member 23 is rotated and the seal member 26 traverses the lateral holes 29, 30 of the housing 28, the elastic seal member 26 is deformed by being pushed into the lateral holes 29, 30 or partially damaged. without, not only rotate smoothly lighter valve body 61, can flow control in accordance with the rotation angle of the valve body 61, durability can be improved.

As described above, according to this embodiment, the hole shape of the outlet portion 63 of the valve body 61 is formed along the flow path with a high height.
Since the convex portion 65 made of the child material is provided, the convex portion 65
Reduces the clearance of the sliding contact surface 64 with the housing 57, the leakage from the clearance on the outer circumference of the valve body 61 is significantly reduced, and the leakage flow rate to other than the predetermined flow path can be minimized. Ma
In addition, the convex portion 65 is molded into the valve body 61 instead of an elastic body such as rubber.
The convex 65 deforms like rubber because
The opening area according to the rotational position of the valve body 61
An accurate flow rate can be obtained without fluctuation.

The convex portion 65 provided on the valve body 61
Accordingly, the sliding contact area is reduced, the driving torque required to rotate the valve element 61 can be reduced, and the convex portion 65
A polymer material molded into the valve body 61 instead of an elastic body such as rubber
Therefore, the convex portion 65 flows out of the housing 57 like rubber.
It can be deformed so as to fit into the edges of the holes of the roads 59 and 60.
And has a smaller coefficient of friction than rubber and does not stick.
Therefore, the driving torque required to rotate the valve
A fluid control valve 56 that is compact, inexpensive, and has a long service life can be realized because it can be made small, can be driven to rotate lightly and smoothly by a motor having a small size and low torque. In addition, since the required driving torque can be reduced, the motor
The reduction ratio of the reduction gear can be reduced. Thereby, the responsiveness of switching and flow rate adjustment can be improved.

That is, with a single drive means and a simple structure, the leakage flow rate to other than the predetermined flow path can be minimized, the required drive torque is small, and a plurality of flow paths can be selectively switched and each flow path can be selected. Thus, it is possible to provide a fluid control valve 56 which is small in size, low in cost, and excellent in durability and reliability.

FIG. 7 is a block diagram of a water flow control device using the above fluid control valve. In FIG. 7, 7 is a hot water tank having a heater 75 provided in a water supply passage 2 for supplying wash water. A fluid control valve 56 shown in FIG. 5 is provided downstream of the hot water tank 7. Reference numerals 76 and 77 denote first and second cleaning nozzles provided to be able to communicate with the first and second outflow passages 59 and 60 of the fluid control valve 56, respectively.
The first washing nozzle 76 is for bidet washing, and the second washing nozzle 77 is for anal washing.

Reference numeral 78 is a sanitary washing toilet seat operating means, which are washing switches 79 and 80 for selecting the first and second washing nozzles 76 and 77, and water pressure adjusting switches 81 and 82 for adjusting the amount of water in each washing. Display means 83 for displaying the selected water force and a stop switch 84
It is composed of Reference numeral 85 denotes a stepping motor 8 which is driving means for the fluid control valve 56 in accordance with a signal from the operating means 78.
6 is a rotation angle control means for controlling the rotation angle.

The operation of this embodiment with the above configuration will be described. After the user sits on the sanitary toilet seat (not shown) and has a toilet, the washing switch 79, 80 is selected, for example, the washing switch 80 is turned on to drive the second washing nozzle 77 for performing anal washing. Then, the signal causes the stepping motor 86 to be rotationally driven through the rotation angle control means 85, and the valve body 61 is rotated to the position shown in FIG. As a result, the wash water is discharged from the inflow passage 58 of the fluid control valve 56 to the second outflow passage 60 via the water supply passage 2, the hot water tank 7, and the like, and then flows into the second wash nozzle 77. When the cleaning switch 80 is pressed, the rotation angle control means 85 first controls the stepping motor 86 so that the standard water pressure is obtained, and rotates the valve body 61. By instructing a desired water pressure with the water pressure adjusting switches 81 and 82, the rotation angle of the valve body 61 is controlled, and the discharge flow rate can be arbitrarily increased or decreased.

After the washing operation, if the stop switch 84 is turned on, the stepping motor 86 is driven to control the valve body 61 to the position shown in FIG. 6 (a) and close the water circuit. When performing bidet cleaning, the same control is performed by selecting the cleaning switch 79.

As described above, according to this embodiment, the stepping motor 86 is used as the driving means, the selection switching between the first and second cleaning nozzles 76 and 77 and the flow rate of the cleaning water discharged from each cleaning nozzle. Fluid control valve 56 for regulation
The operating means 78 for the cleaning nozzle and the rotation angle control means 85 for controlling the rotation angle of the stepping motor 86 in response to a signal from the operating means 78 are provided.
By turning on, the pulse signal supplied to the stepping motor 86 is controlled, and the first washing nozzle 76 for bidet washing and the second washing nozzle 77 for anus washing can be selectively switched. In addition, the amount of cleaning water (water force) discharged from each cleaning nozzle can be arbitrarily adjusted according to a signal from the operating means 78.

The shape of the hole of the outlet portion 63 of the valve body 61 is changed to the flow path.
By providing the convex portion 65 made of a polymeric material formed along the ridge, the convex portion 65 reduces the clearance of the sliding contact surface 64 with the housing 57, and leakage from the clearance of the outer periphery of the valve body 61 is remarkable. When decreasing, for example, when cleaning with the first cleaning nozzle 76, the leakage flow rate to the other second cleaning nozzle can be set to a minimum level that is almost nonexistent.

The convex portion 65 provided on the valve body 61
As a result, the sliding contact area is reduced, the driving torque required to rotate the valve body 61 can be reduced, and the small and low torque stepping motor 86 can be driven to rotate lightly and smoothly. A fluid control valve 56 having a durable life can be realized. Further, since the required driving torque can be reduced, the stepping motor 86 serving as the driving means can be reduced.
The reduction ratio of the built-in reduction gear can be reduced. Thereby, the responsiveness of switching and flow rate adjustment can be improved.

Therefore, with a simple structure of the single drive means 86, the leakage flow rate to other than the predetermined flow path can be minimized, the required drive torque is small, and a plurality of flow paths can be selectively switched.
It is possible to provide a small-sized, low-cost, and highly durable water flow control device capable of controlling the flow rate in each flow path.

Further, since the stepping motor 86 is used as the drive means for the valve body 61, the rotation angle of the valve body 61, that is, the valve opening degree can be controlled with high accuracy by the pulse signal supplied, and the forward and reverse rotations can be performed. . As a result, for example, it is possible to give fluctuations to the amount of cleaning water, and the repetition of strong and weak water flows improves the effect of removing dirt adhering to the human body part, thereby enabling efficient cleaning and eliminating the monotonous feeling at the time of cleaning. .

That is, it is possible to provide a water flow control device suitable for a sanitary washing toilet seat capable of selectively switching a plurality of washing nozzles and adjusting the water pressure with a simple structure.

[0055]

As described above in detail, in the fluid control valve of the present invention, the hole shape of the outlet portion of the flow passage of the valve body rotatably provided in the housing is formed along the flow passage with the housing. A projection made of a polymer material is provided on the sliding contact surface,
The following effects can be obtained.

(1) The shape of the hole of the valve element outlet 37 is set along the flow path.
The convex portion 39 made of a polymer material formed by
Since the clearance of the sliding contact surface 38 with 32 is made small, the leakage from the clearance of the outer circumference of the valve body is significantly reduced, and the leakage flow rate to other than the predetermined flow path can be minimized, and it can be adjusted according to the rotational position of the valve body 35.
Thus, the opening degree and the flow rate of the outlet 37 are obtained.

(2) The shape of the hole of the outlet 37 is set along the flow path.
The formed convex portion 39 made of a polymeric material reduces the sliding contact area, and can reduce the drive torque required to rotate the valve body.

Further, the fluid control valve of the present invention is a valve body which rotates in a housing 44 having a plurality of outflow passages 46 and 47.
48 , an outlet 50 of a flow path 49 ,
50 holes are formed from a polymer material formed along the flow path.
That are those of the convex portion 52 is provided, the following effects can be obtained.

(1) The shape of the hole of the outlet section 50 is set along the flow path.
The formed convex portion 52 made of a polymer material is provided on the housing 44.
By reducing the clearance of the sliding contact surface 51 with and the leakage from the clearance of the outer periphery of the valve body to a great extent, the leakage to the other flow passage can be minimized and the leakage depending on the rotational position of the valve body 48.
Opening degree and the flow rate of the outlet portion 50 is Ru obtained.

(2) The valve element can be rotated with a small torque, and selective switching of a plurality of flow paths and flow rate control in each flow path can be performed lightly and smoothly.

Further, the fluid control valve of the present invention includes a housing 57 having a plurality of outflow passages 59 and 60 , and a polymeric material in which a hole shape of a substantially cylindrical outer peripheral outlet portion 63 is formed along the flow passage.
A motor for rotating the valve body 61 having a convex portion 65 formed of charge, which was provided with a rotation angle control means of the motor, the following effects can be obtained.

(1) It is possible to minimize the leakage flow rate to a channel other than the predetermined channel with a simple structure of a single drive means, and to selectively switch a plurality of channels and to remotely control the flow rate in each channel. it can.

(2) Since the required drive torque can be reduced, the valve body can be rotationally driven by a small motor having a low torque, and a compact, inexpensive, and long-life fluid control valve can be realized.

(3) Since the required drive torque can be made small, the reduction ratio of the reduction gear of the motor, which is the drive means, can be reduced, so that the responsiveness of flow path switching and flow rate adjustment can be improved.

In the sanitary washing toilet seat water flow control device of the present invention, the stepping motor 86 is used as a driving means, and the first and second washing nozzles 76 and 77 are selectively switched and the washing water discharged from each washing nozzle is switched. Outlet for adjusting flow rate
The hole shape of 63 is made of a polymer material formed along the flow path.
Fluid control valve 56 having a valve body 61 formed with protrusions 65 that
The operating means 78 for the cleaning nozzle and the rotation angle control means 85 for controlling the rotation angle of the stepping motor in response to the signal from the operating means are provided, and the following effects can be obtained.

(1) The shape of the hole of the valve body outlet 63 is adjusted along the flow path.
A structure provided with a convex portion 65 made of a polymer material formed by
In, it by the signal from the operating means is controlled pulse signal to be supplied to the stepping motor, the first cleaning nozzle for bidet wash, a second cleaning nozzle for anal irrigation selectively switches that It is possible to adjust the amount (water pressure) of the cleaning water discharged from the first and second cleaning nozzles according to the signal from the operating means.

(2) The shape of the hole of the valve body outlet 63 is adjusted along the flow path.
The projection 65 made of a polymer material formed by
Since the stepping motor is used as the driving means, it is possible to perform highly accurate position control according to the pulse signal supplied, and it is possible to accurately adjust the water pressure without a flow rate detecting means such as a rotational position detecting sensor of the valve body. .

(3) The shape of the hole of the valve body outlet 63 is adjusted along the flow path.
By providing the convex portion 65 made of the polymer material formed as described above, the frictional resistance at the time of turning the valve body can be reduced, and the rotation torque of the stepping motor can be reduced. In addition, since the reduction ratio of the stepping motor can be reduced, the responsiveness of switching and variable flow can be improved.

(4) The shape of the hole of the valve body outlet 63 is adjusted along the flow path.
The convex portion 65 made of a polymer material formed by
As a result, the rotation angle can be controlled with high precision by the pulse signal supplied to the stepping motor, and the forward / reverse operation can be performed within an arbitrary rotation angle range. The effect is improved and efficient cleaning can be performed, and the monotonous feeling at the time of cleaning is eliminated.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a fluid control valve showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of the fluid control valve.

FIG. 3 is a configuration diagram of a fluid control valve according to a second embodiment of the present invention.

FIG. 4 is a sectional view taken along line BB of the fluid control valve.

FIG. 5 is a configuration diagram of a fluid control valve according to a third embodiment of the present invention.

FIG. 6 is a sectional view taken along line CC of the fluid control valve.

FIG. 7 is a configuration diagram of a water flow control device in a sanitary washing toilet seat using a fluid control valve according to a third embodiment of the present invention.

FIG. 8 is a block diagram of a conventional water flow control device.

FIG. 9 is a block diagram of another conventional water flow control device.

[Explanation of symbols]

 31 fluid control valve 32 housing 33 inflow passage 34 outflow passage 35 valve body 36 flow passage 37 outlet portion 38 sliding contact portion 39 convex portion 43 fluid control valve 44 housing 45 inflow passage 46 first outflow passage 47 second outflow passage 48 valve body 49 flow path 50 outlet section 51 sliding contact section 52 convex section 56 fluid control valve 57 housing 58 inflow path 59 first outflow path 60 second outflow path 61 valve body 62 flow path 63 outlet section 64 sliding Contact part 65 Convex part 68 Drive means 76 First cleaning nozzle 77 Second cleaning nozzle 78 Operating means 79 Cleaning switch 80 Cleaning switch 81 Water pressure adjusting switch 82 Water pressure adjusting switch 88 Rotation angle control means

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-6-33503 (JP, A) JP-A-6-17466 (JP, A) JP-A 61-257546 (JP, A) JP-A 61- 55478 (JP, A) JP 60-241583 (JP, A) JP 64-6567 (JP, A) Actually opened 60-54874 (JP, U) Actually opened 61-138952 (JP, U) Actual Kaihei 3-111684 (JP, U) Japanese Patent Publication Sho 50-13499 (JP, B1)

Claims (4)

(57) [Claims] 1. A housing 32 having an inflow path 33 and an outflow path 34 , a valve body 35 rotatably provided in the housing 32 , and connecting or blocking the inflow path 33 and the outflow path 34. Outlet of the flow passage 36 inside the valve body 35
37 is provided on a sliding contact surface 38 with the housing 32, and a convex portion 39 made of a polymer material formed so as to surround the outlet portion 37 along the hole shape is integrally formed with the valve body 35. > Provided fluid control valve. 2. A housing 44, claims having a plurality of outlet passages 46 and 47 provided in each branch from inlet channel 45
Item 2. The fluid control valve according to Item 1 . 3. A drive means 68 having a motor for rotating the valve body 61 , and a rotation angle control means for selectively switching the plurality of outflow paths 59 , 60 and controlling the flow rate by controlling the rotation angle of the motor. The fluid control valve according to claim 1 or 2, further comprising an 85 . 4. A heating means such as a hot water tank 7 provided in the water supply passage 2 for supplying the washing water and heating the washing water;
7 from the inlet channel 2 and the inlet passage 2 communicating with the first outflow path 59 provided in each branch with a housing 57 having a second outlet channel 60, rotatably provided in said housing 57 A polymeric material in which a valve body 61 and an outlet portion 63 of a flow path inside the valve body 61 are provided on a sliding contact surface 64 with the housing 57 and are surrounded along the hole shape of the outlet portion 63. a convex portion 65 formed of a fluid control valve 56 and a drive means having a stepping motor 86 for rotating the valve body 61, the first and second outflow path 59, 60 of the fluid control valve 56 First and second cleaning nozzles 76 and 77 communicating with each other, and a cleaning switch for selectively driving the first and second cleaning nozzles 76 and 77
80 and the water flow control of the sanitary washing toilet seat provided with the operating means 78 having the water pressure adjusting switches 81 and 82 for adjusting the amount of water, and the rotation angle control means 85 for controlling the rotation angle of the stepping motor 68 by the signal of the operating means 78. apparatus.