JP2009014170A - Fluid control valve and water flow control device for sanitary washing toilet seat using the same - Google Patents

Abstract

Provided is a fluid control valve that can obtain an accurate flow rate corresponding to a valve opening degree with a simple configuration and that has a small required drive torque.
A valve body 135 made of an inelastic material rotatably provided in a housing 132 made of an inelastic material having an inflow path 133 and an outflow path 134, and the inflow path and the outflow path are communicated or blocked. The outlet portion 137 of the flow path 136 inside the valve body is provided on the sliding contact surface 138 with the housing 132, and the contact sliding member 139 formed with an elastic material including a hole shape is provided at the outlet portion. The contact sliding member at the outlet of the valve body is made of an elastic material and is in close contact with the sliding contact surface of the inner surface of the housing, so that the accurate opening area and flow rate according to the hole shape of the outlet of the valve body and the rotational position of the valve body Since the other part of the valve body is made of an inelastic material, the sliding frictional resistance can be reduced, and the driving torque required when the valve body is rotated can be reduced.
[Selection] Figure 1

Description

  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 washing a human body part after a toilet.

  The sanitary washing toilet seat is a device intended for washing the anus after stool and washing women's local area for small use and menstruation. However, anal washing requires strong washing power, and bidet washing is soft. A feeling is required. To cope with this, there is a sanitary washing toilet seat having two dedicated nozzles. In order to select and switch between the two systems of nozzles, the following fluid control valve has been proposed.

  For example, FIG. 12 shows a block diagram of a sanitary washing toilet seat using this type of conventional fluid control valve (for example, see Patent Document 1). In the figure, 1 is a water supply pump provided in a water supply channel 2 for washing water, 3 is a bidet washing nozzle for washing a female part, 4 is an anal washing nozzle for washing an anus, and 5 is a bidet washing. A fluid control valve for selecting the nozzle 3 and the anal washing nozzle 4 is a switching knob. Reference numeral 7 is a hot water tank, and 8 is an electromagnetic valve interlocked with the washing knob 9.

  When the cleaning knob 9 is turned, the electromagnetic valve 8 is opened and the pump 1 is operated. The fluid in the water supply channel is sent as cleaning water to the fluid control valve 5 by the water pressure of the pump 1, and the bidet cleaning nozzle 3 is switched by switching the fluid control valve 5. The washing water is selectively ejected from the anal washing nozzle 4 to perform bidet washing and anal washing.

  The fluid control valve 5 has a housing 13 having an inlet 10, an outlet 11 that communicates with the bidet washing nozzle 3, and an outlet 12 that communicates with the anal washing nozzle 4, and a valve body 14 that is rotatable in the housing 13. In the valve body 14, a 0 ring 15 and a 0 ring 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, 20 denotes a water passage inside the valve body 14, and 21 denotes an outlet portion of the water passage 20.

  In the above configuration, the wash water that flows when the electromagnetic valve 8 is opened is pressurized by the pump 1 and enters the water heater 7 to be heated and supplied as hot water to the inlet 10 of the fluid control valve 5 from the water heater 7. Then, as shown in FIG. 12, the cleaning water flows through the water passage 20 in the valve body 14, passes through the outlet portion 21 and flows into the bidet cleaning nozzle 3, and the cleaning water is ejected from the bidet cleaning nozzle 3. Done.

  Further, when the switching knob 6 of the fluid control valve 5 is turned, the valve body 14 is rotated, and the outlet portion 21 of the water passage 20 is switched to the outlet 12 to the anal washing nozzle 4. Wash water spouts and anal cleaning 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 of the cleaning water from each nozzle can be adjusted by controlling the rotation speed of the feed water pump 1.

  Further, a sanitary washing toilet seat shown in FIG. 13A is also shown in Patent Document 1 described above. In the sanitary washing toilet seat fluid control valve 27, the same components as those of the fluid control valve 5 shown in FIG. 12 are denoted by the same reference numerals, detailed description thereof will be omitted, and only different components will be described.

A groove 25 is provided on the outer periphery so as to surround the entire periphery of the outlet 24 in the water passage 20 of the valve body 23, and an elastic seal member 26 is provided in the groove 25. And when the outlet part 24 and the horizontal hole 29 of the outflow port 11 are connected, and the fluid is flowing, it is set as the structure which prevents this fluid leaking into the horizontal hole 30 of the outflow port 12. FIG.

Further, as this type of conventional fluid control valve, one shown in FIG. 14 (see, for example, Patent Document 2) is also known. In this fluid control valve 5a, the same components as those in the fluid control valve 5 shown in FIG. 12 are denoted by the same reference numerals, detailed description thereof will be omitted, and only different components will be described. The valve body 14 a is provided with a convex portion 31 in contact with the entire periphery of the outlet 11 of the housing 13 by resin molding integrally with the valve body 14 a on the entire periphery of the outlet portion 21 of the water passage 20. And before the outlet part 21 of the valve body 14a by rotation approaches the outflow port 11 of the housing 13, it is set as the structure which prevents that a fluid leaks out to the outflow port 11 from the joining surface of the housing 13 and the valve body 14a.
JP 60-51237 A JP-A-7-260019

  However, in the former former 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 wash water at the time of anus wash Despite flowing to the nozzle 4, it leaks from the diameter gap 22 to the outlet 11 of the bidet cleaning nozzle 3 and flows at the outlet cleaning nozzle 4. The washing water leaks from 3.

  For this reason, it is necessary to reduce the diameter gap 22 between the housing 13 and the valve body 14, and this processing requires high accuracy, high processing costs, and the yield of non-defective products is poor and the productivity cannot be increased. there were.

  Further, when trying to reduce the diameter gap 22 between the housing 13 and the valve body 14 for sealing the housing 13 and the valve body 14, the valve body 14 may be fitted into the housing 13 due to dimensional variations. The required torque for rotationally driving the valve body 14 is increased, and there is a problem that there are some that are difficult to rotate even if the switching knob 6 is rotated.

  In order to solve the above problem, in the fluid control valve of the sanitary washing toilet seat shown in FIG. 13A, the elastic seal member 26 is provided on the outer periphery surrounding the outlet portion 24 of the valve body 23. Since the space 22a between the entire peripheral end face of the hole of the outlet portion 24 and the groove 25 is not sealed with respect to the inner surface of the housing 28, the sealing member 26 is rotated by rotating the valve body 23 so that the lateral holes 29, 30 of the housing 28 are rotated. There is a problem that the flow rate cannot be accurately controlled at the rotation relative position.

  That is, as apparent from the development of the main part of the fluid control valve 27 shown in FIG. 13B, when the valve body 23 is rotated, the outlet portion 24 of the valve body 23 is moved to the outlet 11 of the housing 28. Before reaching the horizontal hole 29 of the outlet port 12 or the horizontal hole 30 of the outlet port 12, the joint surface between the housing 28 and the valve element 23 in the space 22 a from the entire peripheral end surface of the outlet portion 24 of the water passage 20 to the elastic seal member 26 (oblique line) From the side hole 29 of the outlet 11 or the side hole 30 of the outlet 12 to the outlet 11.

  Accordingly, the outlet portion 24 of the rotating valve body 23 reaches the horizontal hole 29 of the outlet port 11 of the housing 28, and control is performed with the amount of change of fluid flow until the outlet portion 24 and the horizontal hole 29 completely coincide. Even if it was set, accurate flow control could not be performed due to the leakage of the fluid described above.

Further, in the fluid control valve 5a shown in FIG. 14 for solving the problems of the fluid control valve 27 shown in FIGS. 13 (a) and 13 (b), a convex portion 31 formed by resin molding integrally with the valve body 14a. Since the clearance between the housing 13 and the sliding contact portion 32 is reduced, leakage from the outer periphery of the valve body 14a is remarkably reduced, a flow rate corresponding to the valve opening is obtained with a simple configuration, and the required driving torque is obtained. A fluid control valve with a small is obtained.

  However, in this case, although there is a small gap between the sliding contact portion 32 between the convex portion 31 and the housing 13 provided by resin molding integrally with the valve body 14a, there is some leakage, and the amount of leakage depends on the dimensional accuracy of the resin molding. However, there is a problem that the leakage to other flow paths is derived. For example, even when the valve body 14a is in a valve body position where only the outlet 11 is intended to flow, it leaks to another outlet 12. On the other hand, if the width of the convex portion 31 is increased to prevent the fluid from leaking from the sliding contact portion 32, the driving torque for rotating the valve body 14a may be increased. It was.

  In view of the above-described conventional problems, the problem to be solved by the present invention is to provide a fluid control valve that has a simple configuration with almost no leakage, an accurate flow rate corresponding to the valve opening, and a small required drive torque. It is to provide.

  In order to solve the above problems, a fluid control valve of the present invention includes a housing made of an inelastic material having an inflow path and an outflow path, and a valve body made of an inelastic material provided rotatably in the housing. An outlet portion of a flow passage inside the valve body that communicates or blocks the inflow passage and the outflow passage is provided on a sliding contact surface with the housing, and the outlet portion is formed of an elastic material including a hole shape. A contact sliding member is provided.

  As a result, the contact sliding member formed in the outlet portion of the valve body made of the non-elastic material rotating in the housing made of the non-elastic material and including the hole shape by the elastic material is in sliding contact with the housing. The surface slides in close contact with the elasticity of the elastic material. Therefore, the contact sliding member made of an elastic material has no gap with the sliding contact surface of the housing, and an accurate flow rate corresponding to the valve opening can be obtained. In addition, since only the contact sliding member of the outlet portion is made of an elastic material and the other part of the valve body is made of an inelastic material, the sliding frictional resistance can be reduced and the drive necessary for rotating the valve body. Torque is small.

  The fluid control valve of the present invention can obtain an accurate flow rate according to the valve opening with a simple configuration, and can reduce the required driving torque.

  According to a first aspect of the present invention, there is provided a housing made of an inelastic material having an inflow passage and an outflow passage, a valve body made of an inelastic material rotatably provided in the housing, the inflow passage and the outflow passage. Fluid control in which an outlet portion of a flow path inside the valve body to be communicated or blocked is provided on a sliding contact surface with the housing, and a contact sliding member formed of an elastic material including a hole shape is provided at the outlet portion. It is a valve.

  With this configuration, the contact sliding member made of an elastic material provided at the outlet portion of the valve body made of an inelastic material that rotates in the housing made of an inelastic material has an elastic material on the sliding contact surface with the housing. The contact sliding member made of an elastic material eliminates the gap between the housing and the sliding contact surface, and obtains an accurate flow rate corresponding to the valve opening degree. Can do. Moreover, since only the contact sliding member of the outlet portion is made of an elastic material and the other sliding contact surfaces are made of an inelastic material, the number of elastic sliding contact surfaces can be reduced, and the sliding friction resistance can be reduced. The drive torque required for rotation can be reduced.

  In the fluid control valve according to the second invention, in particular, the contact sliding member of the first invention is rubber or elastomer. With the configuration in which the rubber or elastomer contact sliding member is provided, the contact sliding member made of rubber or elastomer provided at the outlet portion of the valve body made of inelastic material that rotates in the housing made of inelastic material, Since an appropriate rubber hardness can be selected, it can be slid while being in close contact with the sliding contact surface with the housing with an appropriate elasticity, so that the sliding between the contact sliding member made of rubber or elastomer and the housing can be made. An accurate flow rate corresponding to the valve opening can be obtained by eliminating the gap with the dynamic contact surface. In addition, since only the contact sliding member of the outlet portion is made of an elastic material made of rubber or elastomer, and the other sliding contact surfaces are made of an inelastic material, the number of elastic sliding contact surfaces is reduced and sliding friction resistance is reduced. The driving torque required to rotate the valve body can be reduced.

  The fluid control valve according to the third invention is characterized in that, in particular, the contact sliding member of the second invention is fitted into the valve body, and a thread bead is provided in the fitting portion. With this configuration, the contact sliding member can be assembled to the valve body simply by fitting the contact sliding member having the thread bead into the outlet portion of the valve body made of non-elastic material, and there is no need for rubber baking or bonding. In addition, since the seal is made by the thread bead, the seal portion by the thread bead can be slid, and the valve body can be rotated while the contact sliding member is appropriately pressed against the housing by the fluid pressure.

  That is, the contact sliding member can be slid while being pressed and adhered to the housing appropriately by the seal configuration with the thread bead, so that the contact sliding member made of rubber or elastomer and the sliding contact surface of the housing Thus, an accurate flow rate corresponding to the valve opening can be obtained. In addition, since only the contact sliding member of the outlet portion is made of an elastic material made of rubber or elastomer, and the other sliding contact surface is made of an inelastic material, the sliding friction resistance can be reduced and the valve body can be rotated. The driving torque required for this can be reduced.

  A fluid control valve according to a fourth aspect of the invention is characterized in that, in particular, the contact sliding member of the second aspect of the invention is fitted into the valve body, and a direction regulating portion for regulating the fitting direction is provided. It is. With this configuration, for example, in order to improve the linearity of the rotation angle of the valve body and the flow rate change characteristic, even when the outlet portion provided in the contact sliding member is not a simple circle but a deformed hole such as a slit hole, There is no inconvenience that the flow characteristic is shifted by the direction of the outflow hole due to the rotation of the valve body, and a stable flow characteristic can always be obtained.

  The fluid control valve according to the fifth invention is characterized in that, in particular, the contact sliding member of the second invention is formed on the surface of the valve body by coating and printing. With this configuration, it is possible to eliminate the gap with the sliding contact surface of the housing and obtain an accurate flow rate corresponding to the valve opening degree by a simple construction method simply applying and printing an elastic material on the surface of the valve body. be able to.

  In the fluid control valve according to the sixth invention, in particular, in any one of the first to fifth inventions, the contact sliding member has a low friction characteristic having a dynamic friction coefficient of 0.8 or less (ISO8295 JIS K7125). It is characterized by that. In the case of general-purpose nitrile rubber (NBR) or ethylene propylene rubber (EPDM), the coefficient of dynamic friction is about 1.4 to 1.8, whereas the material with a dynamic coefficient of friction of 0.8 or less or processed material is contacted and slid By constituting as a member, the driving torque required to further rotate the valve body can be reduced to about half.

  A fluid control valve according to a seventh invention is characterized in that, in particular, in any one of the first to sixth inventions, the contact sliding member is a rubber or an elastomer in which a low friction reducing component is immobilized by reaction. To do. In order to make the surface of rubber or elastomer low-friction and non-adhesive, there are those that are simply coated with a low-friction non-adhesive agent on the surface, but in this case, the applied material is easy to peel off, and the dramatic low friction effect is sustained. It was difficult.

  On the other hand, a method for reactively fixing a low friction component such as a polymer having low friction and non-adhesive properties has been developed in recent years. For example, by using a coupling agent or surface graft polymerization on the rubber or elastomer surface of the contact sliding member, the low friction component is reacted with a functional group such as -SH, -OH, -COOH on the rubber or elastomer surface and fixed. By making the reaction fixed, the dynamic friction coefficient is about 0.2, which is about 1/5 to 1/8 of that of untreated rubber, and it can be drastically reduced in friction. Even if it is used, the low friction effect can be maintained, an accurate flow rate corresponding to the valve opening degree can be obtained, and the driving torque necessary for driving the valve body can be further reduced.

  In the fluid control valve according to the eighth invention, in particular, in any one of the first to seventh inventions, the housing has a plurality of outflow passages each branched from the inflow passage. That is, a valve body made of an inelastic material rotatably provided in the housing having a plurality of outflow passages, and an outlet of a flow passage inside the valve body that communicates or blocks the inflow passage and the outflow passage. The portion is provided on a sliding contact surface with the housing, and a contact sliding member formed by including an aperture shape with an elastic material is provided at the outlet portion.

  With this configuration, the contact sliding member made of an elastic material provided at the outlet portion of the valve body made of an inelastic material that rotates in the housing made of an inelastic material has an elastic material on the sliding contact surface with the housing. Since the contact sliding member made of an elastic material eliminates the gap between the housing and the sliding contact surface, leakage from the gap on the outer periphery of the valve body is remarkably reduced. . As a result, leakage to the other flow path can be minimized, and selective switching of a plurality of flow paths and accurate flow rate control in each flow path are possible. Moreover, since only the contact sliding member of the outlet portion is made of an elastic material and the other sliding contact surfaces are made of an inelastic material, the number of elastic sliding contact surfaces can be reduced, and the sliding friction resistance can be reduced. The drive torque required for rotation can be reduced.

  A fluid control valve according to a ninth invention is the fluid control valve according to any one of the first to eighth inventions, in particular, by controlling the rotation angle of the motor and drive means having a motor for rotating the valve body. A rotation angle control means for performing selective switching of a plurality of outflow passages and flow rate control is provided. That is, a single drive is provided by providing a motor that rotationally drives a valve body made of an inelastic material rotatably provided in the housing having a plurality of outflow paths, and a rotation angle control means of the motor. With a simple and simple configuration, the leakage flow rate to other than the predetermined flow path can be minimized, the required drive torque is small, and the remote control enables the selective switching of multiple flow paths and the flow control in each flow path. The fluid control valve can be reduced in size, cost, and durability can be improved.

  A water flow control device for a sanitary washing toilet seat according to a tenth aspect of the present invention includes heating means such as a water heater provided in a water supply path for supplying washing water, heating water, and an inflow path communicating with the water heater and the inflow path. A housing having a plurality of outflow passages provided by branching each other, a valve body rotatably provided in the housing, and an outlet portion of a flow path inside the valve body on a sliding contact surface with the housing A fluid control valve comprising a contact sliding member provided at the outlet portion including a hole shape by an elastic material, a drive means having a stepping motor for rotating the valve body, and Operating means having first and second washing nozzles respectively communicating with the first and second outflow passages, a washing switch for selectively driving the first and second washing nozzles, and a water flow adjusting switch for adjusting the amount of water; , Said operation The signal means is provided with a rotation angle control means for controlling the rotation angle of the stepping motor.

In other words, the stepping motor is used as a driving means, and an outlet for performing selective switching between the first and second cleaning nozzles and adjusting the flow rate of the cleaning water discharged from each cleaning nozzle is provided on the sliding contact surface with the housing. A fluid control valve having a contact sliding member formed of an elastic material including a hole shape at the outlet portion, and first and second cleanings respectively communicating with the first and second outflow passages of the fluid control valve An operation means having a nozzle, a washing switch for selectively driving the first and second washing nozzles, and a water flow adjusting switch for adjusting the amount of water; and a rotation angle control for controlling the rotation angle of the stepping motor by a signal from the operation means Since the means is provided, the pulse signal supplied to the stepping motor is controlled by the signal from the operation means, and the first washing nozzle for bidet washing It is possible to selectively switch the second cleaning nozzle for anal cleaning, and it is compact that can finely adjust the amount of water (water flow) discharged from the first and second cleaning nozzles according to the signal of the operation means A water flow control device is possible.

  Since the object of the present invention can be achieved by using the first to tenth aspects of the present invention as the main part of the embodiments, details of the embodiments corresponding to the respective claims will be described below with reference to the drawings. It will be described and the best mode for carrying out the present invention will be described. Note that the present invention is not limited to the embodiments. Further, in the description of the present embodiment, the same reference numerals are given to the same configurations and the effects and the same description is not repeated.

(Embodiment 1)
FIG. 1 is a structural cross-sectional view of a fluid control valve 131 according to Embodiment 1 of the present invention, and FIGS. 2A to 2C are cross-sectional views taken along line AA of FIG. In the figure, reference numeral 132 denotes a housing made of an inelastic material, and has an inflow path 133 and an outflow path 134. Reference numeral 135 denotes a valve body made of an inelastic material provided rotatably in the housing 132, and a flow path 136 that connects or blocks the inflow path 133 and the outflow path 134 of the housing 132 is formed therein.

  The outlet portion 137 of the flow path 136 of the valve body 135 is provided on the sliding contact surface 138 with the housing 132, and a ring shape made of an elastic material including the hole shape of the outlet portion at the edge of the hole shape of the outlet portion 137. The sliding contact member 139 is integrally formed with the valve body 135 of the outlet portion 137. Reference numerals 140 and 141 denote seal packings such as an X ring and an O ring, which are fitted in grooves on the entire circumferential surface at both ends of the valve body 135 perpendicular to the axial direction of the valve body 135. Reference numeral 142 denotes a rotary knob.

  The operation of the present embodiment in the above configuration will be described. FIG. 2A shows the valve closed state. The flow path 136 communicating with the inflow path 133 does not communicate with the outflow path 134, and is made of an elastic material provided at the hole-shaped edge of the outlet portion 137. The resulting sliding contact member 139 is in close contact with the sliding contact surface 138 on the inner surface of the housing 132 to prevent fluid leakage to the outflow passage 134. FIG. 2B shows the valve half open state, and FIG. 2C shows the valve fully open state.

  As described above, when the valve body 135 is rotated in order to fit the outlet portion 137 of the valve body 135 to the outflow path 134 of the housing 132, the sliding contact member 139 first reaches the hole of the outflow path 134. In addition, since the contact sliding member 139 is positioned on the sliding contact surface 138 including the hole shape of the outlet portion 137, the outlet sliding portion 137 moves from the sliding contact surface 138 to the outlet passage 134 before the outlet portion 137 reaches the outlet passage 134. The fluid does not leak and the fluid begins to flow only after the outlet 137 reaches the outflow passage 134.

  Therefore, fluid control can be accurately performed according to the degree of opposition of the outlet portion 137 of the valve body 135 with the hole of the outflow passage 134. Further, since only the contact sliding member 139 of the outlet portion 137 of the valve body 135 is made of an elastic material and the other part of the valve body 135 is made of an inelastic material, the sliding frictional resistance can be reduced. The driving torque required at the time of rotation can also be suppressed small.

As described above, according to the present embodiment, the sliding contact member 139 is formed on the housing 132 by providing the sliding contact member 139 made of an elastic material including the hole shape of the outlet portion 137 of the valve body 135. It is possible to obtain an accurate opening area and flow rate according to the hole shape of the outlet portion 137 of the valve body 135 and the rotational position of the valve body 135 by being in close contact with the sliding contact surface 138 of the inner surface.

  Further, in the configuration in which the sliding contact member 139 made of an elastic material is provided along the hole shape of the outlet portion 137 of the valve body 135, only the contact sliding member 139 of the outlet portion 137 of the valve body 135 is made of an elastic material. By forming the other part of the valve body 135 from a non-elastic material, the sliding contact area of an elastic material having a larger dynamic friction coefficient than that of the non-elastic material can be reduced, and the driving torque required to rotate the valve body 135 can be reduced. Small and accurate flow rate corresponding to the rotational position of the valve body 135 can be performed with a small rotational operation force.

  In particular, the effect of this operation is that only the portion of the sliding contact member 139 made of an elastic material in which the hole shape of the outlet portion 137 of the valve body 135 is provided along the flow path 136, for example, a slight amount of about 0.1 to 0.2 millimeters. A higher effect can be obtained by forming on a convex part (not shown). This is because the convex portion of the sliding contact member 139 made of an elastic material of the valve body 135 is more elastic and closely contacts the sliding contact surface 138 on the inner surface of the housing 132, so that the sealing performance is further improved and the sliding This is because the contact area can be reduced to the narrow area of the convex portion of the sliding contact member 139, and the sliding frictional resistance can be further reduced.

(Embodiment 2)
FIG. 3 is a structural cross-sectional view of the fluid control valve 143 according to Embodiment 2 of the present invention, and FIGS. 4A to 4D are BB cross-sectional views of FIG. In the figure, reference numeral 144 denotes a housing made of an inelastic material, and has an inflow path 145 and first and second outflow paths 146 and 147. Reference numeral 148 denotes a valve body made of an inelastic material rotatably provided in the housing 144. The inflow passage 145 and the first or second outflow passages 146, 147 are selectively communicated or blocked inside. A flow path 149 is formed to block both outflow paths.

  The outlet portion 150 of the flow path 149 of the valve body 148 is provided on the sliding contact surface 151 with the housing 144, and a ring shape made of an elastic material including the hole shape of the outlet portion at the hole-shaped edge of the outlet portion 150. The sliding contact member 152 is integrally formed with the valve body 148. Reference numerals 153 and 154 denote seal packings such as an X ring and an O ring, which are fitted in grooves on the entire circumferential surface at both ends of the valve body 148 perpendicular to the axial direction of the valve body 148. Reference numeral 155 denotes a rotary knob.

  The operation of the present embodiment in the above configuration will be described. FIG. 4A shows the valve closed state, and the flow path 149 communicating with the inflow path 145 does not communicate with any of the first and second outflow paths 146 and 147, and The sliding contact member 152 made of an elastic material provided at the edge of the hole shape is in close contact with the sliding contact surface 151 on the inner surface of the housing 144 to prevent fluid leakage.

  4B shows a state in which the valve body 148 is rotated, the outlet 150 is directed toward the first outflow path 146 of the housing 144, and the first outflow path 146 is fully opened. FIG. 4D shows a state where the body 148 rotates and the second outflow passage 147 is half-opened, and FIG. 4D shows a state where the valve body 148 further rotates and the second outflow passage 147 is fully opened.

  As described above, when the valve body 148 is rotated to align the outlet 150 of the valve body 148 with the first and second outflow passages 146 and 147 of the housing 144, the sliding contact member 152 is first moved. Even if the contact sliding member 152 is located on the sliding contact surface 151 including the hole shape of the outlet portion 150 even if it approaches the holes of the first and second outflow passages 146, 147, the outlet portion 150 is Fluid does not leak from the sliding contact surface 151 to the first and second outflow passages 146, 147 before reaching the holes of the first and second outflow passages 146, 147, and the outlet portion 150 is connected to the first and second outflow passages 146, 147. The fluid begins to flow only after reaching the second outflow passages 146 and 147.

  Accordingly, accurate fluid control is possible depending on the degree of opposition of the first and second outflow passages 146 and 147 at the outlet 150 of the valve body 148. Further, since only the contact sliding member 152 of the outlet 150 of the valve body 148 is made of an elastic material and the other part of the valve body 148 is made of an inelastic material, the sliding friction resistance can be reduced. It is possible to reduce the driving torque required during rotation.

  As described above, according to the present embodiment, by providing the sliding contact member 152 made of an elastic material including the hole shape of the outlet portion 150 of the valve body 148, the sliding contact member 152 can be attached to the housing 144. It is possible to obtain an accurate opening area and flow rate according to the hole shape of the outlet portion 150 of the valve body 148 and the rotational position of the valve body 148 by closely contacting the sliding contact surface 151 of the inner surface.

  Further, in the configuration in which the sliding contact member 152 made of an elastic material including the hole shape is provided at the hole-shaped edge of the outlet portion 150 of the valve body 148, the contact sliding member 152 of the outlet portion 150 of the valve body 148 is provided. Only the elastic material and the other part of the valve body 148 are made of a non-elastic material, so that the sliding contact area of the elastic material having a larger dynamic friction coefficient than the non-elastic material can be reduced, and the valve body 148 can be rotated. The drive torque required for the valve body 148 is small, and an accurate flow rate corresponding to the rotational position of the valve body 148 can be performed with a small rotational operation force. In particular, the effect of this operation is that only the portion of the sliding contact member 152 made of an elastic material in which the hole shape of the outlet 150 of the valve body 148 is provided along the flow path, for example, a slight amount of about 0.1 to 0.2 mm. A higher effect can be obtained by forming the projections (not shown).

  Accordingly, the leakage flow rate to the other flow path in the first and second outflow paths 146 and 147 can be minimized with a simple configuration, and the required drive torque is small. A fluid control valve 143 may be provided that allows flow control in the channel.

(Embodiment 3)
FIG. 5 is a structural cross-sectional view of a fluid control valve 156 according to Embodiment 3 of the present invention, and FIGS. 6 (a) to 6 (d) are CC cross-sectional views of FIG. In the figure, reference numeral 157 denotes a housing made of an inelastic material, and has an inflow passage 158 and first and second outflow passages 159 and 160. Reference numeral 161 denotes a substantially cylindrical valve body made of a non-elastic material rotatably provided in the housing 157. The inflow passage 162 and the first and second outflow passages 159 and 160 are selectively communicated with each other. Or the flow path 162 which interrupts | blocks and interrupts both outflow paths is formed.

  The outlet portion 163 of the flow path 162 of the valve body 161 is provided on the sliding contact surface 164 with the housing 157, and the annular shape made of an elastic material including the hole shape of the outlet portion at the edge of the hole shape of the outlet portion 163. The sliding contact member 165 is integrally formed with the valve body 161. Reference numerals 166 and 167 denote seal packings such as an X ring and an O ring, which are fitted in grooves on the entire circumferential surface at both ends of the valve body 161 perpendicular to the axial direction of the valve body 161.

  Reference numeral 168 denotes a driving means composed of a motor that can rotate forward and backward. The output shaft 169 of the motor 168 has an I-shaped cross-section and is inserted into the hole 170 having the same I-shaped cross-section of the valve body 161. The diameter of the mounting flange 171 of the motor 168 is larger than the diameter of the mounting boss 172 of the housing 157. In this configuration, there is a mounting gap play, and the eccentricity of the shaft center between the housing 157 and the valve body 161 is absorbed. The height of the mounting boss 172 of the housing 157 is larger than the plate thickness of the mounting flange 171 of the motor 168. Even after the motor 168 is tightened with the screws 173 and 174, the eccentricity is compensated for within the range of the mounting clearance described above. It is the structure which has the freedom degree of movement to do.

The operation of the present embodiment in the above configuration will be described. FIG. 6A shows the valve closed state of the valve body 161. The flow path 162 communicating with the inflow path 158 does not communicate with any of the first and second outflow paths 159, 160. A sliding contact member 165 made of an elastic material is in close contact with the sliding contact surface 164 on the inner surface of the housing 157 along the hole shape of the outlet portion 163 to prevent fluid leakage.

  6B shows a state in which the valve body 161 is rotated, the outlet portion 163 is directed toward the first outflow passage 159 of the housing 157, and the first outflow passage 159 is fully opened. FIG. FIG. 6D shows a state where the body 161 is rotated and the second outflow passage 160 is half-opened, and FIG. 6D shows a state where the valve body 161 is further rotated and the second outflow passage 160 is fully opened.

  As described above, when the valve body 161 is rotated to align the outlet portion 163 of the valve body 161 with the first and second outflow passages 159 and 160 of the housing 157, the sliding contact member 165 is first moved. Even if the contact sliding member 165 is located on the sliding contact surface 164 including the hole shape of the outlet portion 163 even if it approaches the holes of the first and second outflow passages 159, 160, the outlet portion 163 is the first outlet 163. Fluid does not leak from the sliding contact surface 164 to the first and second outflow passages 159, 160 before reaching the holes of the first and second outflow passages 159, 160, and the outlet portion 163 is connected to the first and second outflow passages 159, 160. The fluid begins to flow only after reaching the second outflow passages 159 and 160.

  Therefore, accurate fluid control is possible depending on the degree of opposition to the holes of the first and second outflow passages 159 and 160 at the outlet portion 163 of the valve body 161. In addition, since only the contact sliding member 165 of the outlet portion 163 of the valve body 161 is made of an elastic material and the other part of the valve body 161 is made of an inelastic material, the sliding friction resistance can be reduced. It is possible to reduce the driving torque required during rotation.

  As described above, according to the present embodiment, the sliding contact member 165 made of an elastic material including a hole shape is provided at the hole edge of the outlet portion 163 of the valve body 161, so that the sliding contact member 165 is provided. Can be brought into close contact with the sliding contact surface 164 of the inner surface of the housing 157, and an accurate opening area and flow rate according to the hole shape of the outlet portion 163 of the valve body 161 and the rotational position of the valve body 161 can be obtained.

  In the configuration in which the hole shape of the outlet portion 163 of the valve body 161 is provided with the sliding contact member 165 made of an elastic material along the flow path, only the contact sliding member 165 of the outlet portion 163 of the valve body 161 is an elastic material. Thus, by forming the other part of the valve body 161 from a non-elastic material, the sliding contact area of the elastic material having a larger dynamic friction coefficient than that of the non-elastic material can be reduced, and the drive necessary to rotate the valve body 161 is achieved. The torque is small, and an accurate flow rate corresponding to the rotational position of the valve body 161 can be performed with a small rotational operation force.

  Therefore, the valve body 161 can be rotationally driven by a small and low-torque motor, and a compact and inexpensive fluid control valve 156 can be realized. In addition, since the required driving torque can be reduced, the reduction gear ratio of the reduction gear of the motor 168 as the driving means can be reduced. Thereby, the responsiveness of switching and flow rate adjustment can be improved.

  In other words, it is possible to minimize the leakage flow rate to other than the predetermined flow path with a simple configuration with a single drive means, and the required drive torque is small, and it is possible to selectively switch between multiple flow paths and control the flow rate in each flow path. It is possible to provide an excellent fluid control valve 156 that is small and low in cost.

(Embodiment 4)
FIG. 7 is a configuration diagram of a water flow control device in a sanitary washing toilet seat using the fluid control valve shown in FIG. 5 according to Embodiment 4 of the present invention. In the figure, reference numeral 7 denotes a water heater provided in the water supply path 2 for supplying cleaning water and having a heater 75. The fluid shown in FIG. 5 which is the invention of the fifth embodiment is disposed downstream of the water heater 7. A control valve 156 is provided. The configuration and operational effects of the fluid control valve 156 are the same as those shown in FIG. 176 and 1
77 is a first and second cleaning nozzle provided in communication with the first and second outflow passages 159 and 160 of the fluid control valve 156, respectively. The first cleaning nozzle 176 is for bidet cleaning. The second cleaning nozzle 177 is for anal cleaning.

  178 is an operation means for the sanitary washing toilet seat, the washing switches 179 and 180 for selecting the first and second washing nozzles 176 and 177, and the water pressure adjusting switches 181 and 182 for adjusting the amount of water in each washing are selected. It comprises display means 183 and a stop switch 184 for displaying the current water flow. Reference numeral 185 denotes a rotation angle control means for controlling the rotation angle of the stepping motor 168 that is a drive means for the fluid control valve 156 based on a signal from the operation means 178.

  The operation of the present embodiment in the above configuration will be described. After the user sits on a sanitary toilet seat (not shown) and uses the toilet switch, the cleaning switch 180 is turned on to select the cleaning switch 179, 180, for example, to drive the second cleaning nozzle 177 that performs anal cleaning. Then, the stepping motor 168 is driven to rotate by the signal via the rotation angle control means 185, and the valve body 161 is rotated to the position shown in FIG.

  As a result, the cleaning water is discharged from the inflow path 158 of the fluid control valve 156 to the second outflow path 160 through the water supply path 2 and the water heater 7 and flows into the second cleaning nozzle 177. When the cleaning switch 180 is pressed, the rotation angle control means 185 first controls the stepping motor 168 so that the standard water pressure is obtained, and rotates the valve body 161. In addition, by instructing the desired water flow with the water flow adjustment switches 181 and 182, the rotation angle of the valve body 161 is controlled, and the discharge flow rate can be arbitrarily increased or decreased.

  If the stop switch 184 is turned on after the cleaning operation, the stepping motor 168 is driven, the valve body 161 is controlled to the position shown in FIG. 6A, and the water circuit is closed. When bidet cleaning is performed, if the cleaning switch 179 is selected, the signal is driven to rotate the stepping motor 168 via the rotation angle control means 185, so that the position shown in FIG. The valve body 161 is rotated to a position such that the cleaning water is discharged from the inflow path 158 of the fluid control valve 156 to the first outflow path 159 through the water supply path 2, the water heater 7, and the like, and the first cleaning nozzle 176. And is controlled in the same manner as the second cleaning nozzle 177 described above.

  As described above, according to the present embodiment, the stepping motor 168 is used as a driving means to selectively switch between the first and second cleaning nozzles 176 and 177 and to adjust the flow rate of the cleaning water discharged from each cleaning nozzle. Since the fluid control valve 156 to be performed, the cleaning nozzle operation means 178, and the rotation angle control means 185 for controlling the rotation angle of the stepping motor 168 by the signal of the operation means 178 are provided, the operation means 178 is operated. Thus, the pulse signal supplied to the stepping motor 168 is controlled, and the use of the first cleaning nozzle 176 for bidet cleaning and the second cleaning nozzle 177 for anal cleaning can be selectively switched. It is possible to arbitrarily adjust the amount of water (water flow) discharged from each cleaning nozzle in accordance with the signal from the operation means 178.

  Further, since the sliding contact member 165 made of an elastic material is provided along the hole shape of the outlet portion 163 of the valve body 161, the sliding contact member 165 made of an elastic material becomes a sliding contact surface on the inner surface of the housing 157. 164, the leakage from the outer peripheral gap of the valve body 161 is remarkably reduced. For example, when washing is performed with the first washing nozzle 176, there is almost no leakage flow rate to the other second washing nozzle. The minimum level can be said.

Further, since only the contact sliding member 165 of the outlet portion 163 of the valve body 161 is made of an elastic material and the other part of the valve body 161 is made of an inelastic material, the sliding friction resistance can be reduced, and the valve body 161 is The driving torque required for rotation can be reduced, and the small and low torque stepping motor 168 can be driven to rotate, and a compact and inexpensive fluid control valve 156 can be realized. Furthermore, since the required drive torque can be reduced, the reduction ratio of the built-in reduction gear of the stepping motor 168 that is the drive means can be reduced, and the response of switching and flow rate adjustment can be improved.

  Accordingly, the simple flow rate of the single drive means 168 can minimize the leakage flow rate to other than the predetermined flow path, and the required drive torque is small. Therefore, it is possible to provide an excellent water flow control device that is small and low in cost.

  Further, since the stepping motor 168 is used as the driving means for the valve body 161, the rotation angle of the valve body 161, that is, the valve opening degree can be controlled with high accuracy by the supplied pulse signal, and forward / reverse rotation is also possible. As a result, for example, it becomes possible to give fluctuations to the amount of water to be washed, and the effect of peeling off the filth adhering to the local part of the human body can be improved by repeating the strong and weak water flow, so that efficient washing can be achieved and the monotonous feeling at the time of washing is eliminated .

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

(Embodiment 5)
FIG. 8 is a structural cross-sectional view of a fluid control valve 190 in the fifth embodiment of the present invention. In the figure, reference numeral 191 denotes a cylindrical housing made of an inelastic material, which has an inflow path 192, first and second outflow paths 193 and 194, and third and fourth outflow paths 195 and 196, respectively. is doing. Reference numeral 197 denotes a bottomed substantially cylindrical valve body made of an inelastic material rotatably provided in the housing 191, and an inflow passage 192 of the housing 191 and the first, second, third and first A flow path 198 that selectively communicates or blocks the four outflow paths 193, 194, 195, and 196 is formed.

  The outlet portion 199 of the flow path 198 of the valve body 197 is provided on the sliding contact surface 200 with the housing 191, and the whole of the outlet portion 199 is made of an elastic material including the hole shape of the outlet portion at the edge of the hole shape. A sliding contact member 201 having a circular arc surface is formed integrally with the valve body 197. 202 and 203 are seal packings such as an X ring and an O ring, which are fitted in grooves on the entire circumferential surface at both ends of the valve body 197 perpendicular to the axial direction of the valve body 197. Reference numeral 204 denotes a driving means for rotating the valve body 197, which is a stepping motor capable of rotating forward and backward.

  9 is an exploded perspective view of the valve element 197 of the fluid control valve 190 shown in FIG. 8, FIG. 10 is an enlarged perspective view of only the sliding contact member 201 of FIG. 9, and FIG. 11 is a sectional view thereof. is there. The sliding contact member 201 according to the present embodiment is the same as that of each of the first to fourth embodiments shown in FIGS. The sliding contact member provided on the moving contact surface and made of an elastic material along the hole-shaped edge of the outlet portion is formed integrally with the valve body. ” The specific configuration is different.

  That is, the contact sliding member 201 made of rubber or elastomer is hermetically fitted into the fitting opening 209 that leads to the flow path 198 of the resin-molded valve body 197, and as shown in FIG. A very thin thread bead 206 is provided on the entire circumference.

  The thread bead 206 slightly slides in the fitting port 209 in response to the movement of the contact sliding member 201 to which the fluid pressure is applied being appropriately pressed against the sliding contact surface 200 of the housing 191. Reference numeral 207 denotes a direction restricting portion that restricts the fitting direction of the contact sliding member 201, and 208 is a slit hole that forms an outlet portion 199 of the valve body 197.

  The slit hole 208 has a circular shape having the same diameter as the inner diameter of the flow path at the outlet of the flow path of the valve body in each of the first to fourth embodiments shown in FIGS. The inner diameter of the moving member is also a part of the outlet portion of the flow path, but in this embodiment, the outlet portion 199 is a slit hole 208.

  With this configuration, the contact sliding member 201 is assembled to the valve body 197 simply by fitting the contact sliding member 201 having the thread bead 206 into the fitting port 209 forming the outlet 199 of the valve body 197 made of an inelastic material. Thus, there is no need for baking or bonding of rubber, and since the seal is made by the thread bead 206, the seal portion by the thread bead 206 can be slidable as described above, and the contact sliding member 201 can be slid by the fluid pressure. The valve body 197 can be rotated while being appropriately pressed against the sliding contact surface 200 of the housing 191.

  In short, the contact sliding member 201 made of rubber or elastomer is fitted into the resin-molded valve body 197 and has a slit hole 208, and the seal portion by the thread bead 206 is slidable. It acts on the contact sliding member 201 into which the fluid pressure of 198 is fitted so as to press the contact sliding member 201 against the sliding contact surface 200 of the housing 191.

  That is, even if the dimensional accuracy of the parts is somewhat rough, the contact sliding member 201 can be appropriately pressed against the sliding contact surface 200 of the housing 191 by the fluid pressure without being too strong and not too weak. Since the contact sliding member 201 can be slid while being appropriately pressed against the housing 191, the contact sliding member 201 made of rubber or elastomer eliminates a gap with the sliding contact surface 200 of the housing 191. An accurate flow rate corresponding to the valve opening can be obtained.

  Moreover, since only the contact sliding member 201 of the outlet portion 199 is made of an elastic material made of rubber or elastomer, and the valve body 197 is made of an inelastic material, the sliding friction resistance can be reduced, and it is necessary for rotating the valve body. The driving torque can be reduced.

  The above-described operation and effect have been described in the configuration in which the contact sliding member 201 having the thread bead 206 is fitted in the outlet portion 199 of the valve body 197. However, even when the thread bead 206 is not provided, the contact sliding member 201 and the valve body 197 are contacted. The same effect can be obtained if the fitting accuracy with the moving member 201 is appropriate.

  Further, as described above, the contact sliding member 201 made of rubber or elastomer is fitted into the resin-molded valve body 197, and the contact sliding member 201 eliminates the gap with the sliding contact surface 200 of the housing 191. The fluid control valve 190 shown in FIG. 8 can be used to obtain an accurate flow rate corresponding to the valve opening and to suppress a driving torque required to rotate the valve body 197. In the configuration in which the first, second, third or fourth outflow passages 193, 194, 195, 196 are switched to a plurality of outflow passages or the flow rate of each is controlled, leakage to other flow passages, and the stepping motor 204 There is no need to worry about upsizing.

  Moreover, the convex part 31 formed so that it encloses along the hole shape of the exit part 21 of the valve body 14a like the conventional fluid control valve 5a shown in FIG. 14 is resin-molded integrally with the valve body 14a, and is provided. In this case, the gap between the sliding contact portion 32 between the convex portion 31 and the housing 13 is small, but there is some leakage, and there is a problem that the amount of leakage varies depending on the dimensional accuracy of the resin molding, in order to ensure the dimensional accuracy. In addition, the valve body 14a and the housing 13 are made of polyphenylene sulfide (PPS) resin, which has a high material cost, and the molding conditions are strictly controlled. Nevertheless, leakage to other flow paths cannot be avoided.

  However, in the present embodiment, the valve body 197 and the housing 191 are made of, for example, ABS resin (acrylonitrile, butadiene, styrene) by fitting the contact sliding member 201 made of rubber or elastomer into the resin molded valve body 197. The contact sliding member 201 eliminates a gap with the sliding contact surface 200 of the housing 191 according to the valve opening without requiring particularly strict molding condition management. An accurate flow rate can be obtained, and the driving torque required to rotate the valve body 197 can be reduced.

  As described above, the fluid control valve 190 in the present embodiment is switched to a large number of outflow passages 193, 194, 195, and 196, and in the configuration for controlling the respective flow rates, leakage to other passages, the stepping motor 204 Since there is no need to worry about an increase in size and the like, not only switching between buttocks washing and bidet washing and flow rate adjustment, the functions of washing the outside of the buttocks nozzle and the bidet nozzle to keep them clean, etc., are one fluid control valve 190 This is possible without wasting water or hot water, and is suitable for providing a warm toilet bowl with high added value in a compact and compact manner.

  Further, as shown in FIG. 10, the contact sliding member 201 made of rubber or elastomer is fitted into the valve body 197, and the direction regulating portion 207 that regulates the fitting direction is provided. For example, in order to improve the linearity of the rotation angle of the valve body 197 and the flow rate change characteristic, even when the outlet portion 199 provided in the contact sliding member 201 is not a simple circle but a deformed hole such as a slit hole 208. There is no inconvenience that the flow characteristic is shifted due to the direction of the outflow hole due to the rotation of the valve body 197, and a stable flow characteristic can always be obtained.

  Incidentally, the sliding contact members 139, 152, and 165 shown in FIGS. 1 to 7 are made of elastic material made of rubber or elastomer along the hole shape of the outlet portions 137, 150, and 163, to the valve bodies 135, 148, and 161. The valve body 135, 148, 161 may be configured to be fitted, or an elastic material made of rubber or elastomer along the hole shape of the outlet portions 137, 150, 163 may be applied and printed on the surface of the valve body 135, 148, 161. By eliminating the gaps between the body 135, 148, 161 and the sliding contact surfaces 138, 151, 164 of the housings 132, 144, 157, leakage from the gap on the outer periphery of the valve body can be significantly reduced, and accurate flow rate control becomes possible. .

  In addition, the contact sliding member is formed by applying and printing an elastic material on the surface of the valve body, thereby eliminating a gap with the sliding contact surface of the housing and obtaining an accurate flow rate according to the valve opening degree. This can be realized by a simple construction method in which an elastic material is applied and printed on the surface of the valve body.

  Further, the contact sliding members 139, 152, 165, and 201 preferably have low friction characteristics with a dynamic friction coefficient of 0.8 or less (ISO8295 JIS K7125). In the case of general-purpose nitrile rubber (NBR) or ethylene propylene rubber (EPDM), the coefficient of dynamic friction is about 1.4 to 1.8, whereas the material with a dynamic coefficient of friction of 0.8 or less or processed material is contacted By configuring as a member, the driving torque required to rotate the valve bodies 135, 148, 161, and 197 can be further reduced to about half. In this case, the required driving torque of the driving means 168, 204 can be further reduced, and a longer life or a smaller size or cost can be achieved.

Furthermore, it is more preferable that the contact sliding members 139, 152, 165, and 201 are made of rubber or elastomer in which a low friction reducing component is reactively fixed. In order to make the surface of rubber or elastomer low-friction and non-adhesive, there are those that are simply coated with a low-friction non-adhesive agent on the surface, but in this case, the applied material is easy to peel off, and the dramatic low friction effect is sustained. It was difficult.

  On the other hand, a method for reactively fixing a low friction component such as a polymer having low friction and non-adhesive properties has been developed in recent years. For example, by using a coupling agent or surface graft polymerization on the rubber or elastomer surface of the contact sliding member, the low friction component is reacted with a functional group such as -SH, -OH, -COOH on the rubber or elastomer surface and fixed. By making the reaction fixed, the dynamic friction coefficient is about 0.2, which is about 1/5 to 1/8 of that of untreated rubber, and it can be drastically reduced in friction. Even if it is used, a low friction effect can be maintained, an accurate flow rate corresponding to the valve opening can be obtained, and a driving torque necessary for driving the valve bodies 135, 148, 161, 197 can be obtained. It can be further reduced. In this case, the required driving torque of the driving means 168 and 204 can be further reduced, and a longer life or a smaller size or cost can be achieved.

  As described above, the fluid control valve according to the present invention can obtain an accurate flow rate according to the valve opening degree with a simple configuration and can reduce the required driving torque. It can also be applied to fluid equipment.

Cross-sectional view of the configuration of the fluid control valve in Embodiment 1 of the present invention AA sectional view of the fluid control valve in FIG. Sectional drawing of composition of fluid control valve in Embodiment 2 of the present invention BB sectional view of FIG. 3 of the fluid control valve Sectional drawing of composition of fluid control valve in Embodiment 3 of the present invention CC sectional view of FIG. 5 of the fluid control valve The block diagram of the water flow control apparatus in the sanitary washing toilet seat using the fluid control valve shown in FIG. 5 in Embodiment 4 of this invention Sectional drawing of composition of fluid control valve in Embodiment 5 of the present invention An exploded perspective view of the valve body of the fluid control valve The perspective view of the contact sliding member of the fluid control valve Sectional view of the contact sliding member Configuration diagram of conventional water flow control device Configuration diagram of another conventional water flow control device Configuration diagram of another conventional water flow control device

Explanation of symbols

131, 143, 156, 190 Fluid control valve 132, 144, 157, 191 Housing 133, 145, 158, 192 Inflow path 134 Outflow path 135, 148, 161, 197 Valve element 136, 149, 162, 198 Flow path 137, 150, 163, 199 Outlet portion 138, 151, 164, 200 Sliding contact surface 139, 152, 165, 201 Contact sliding member 146, 159, 193 First outflow path (outflow path)
147, 160, 194 Second outflow channel (outflow channel)
168, 204 Drive means 176 First washing nozzle 177 Second washing nozzle 178 Operation means 179 Washing switch 180 Washing switch 181 Water pressure adjustment switch 182 Water pressure adjustment switch 188 Rotation angle control means 195 Third outflow path (outflow path)
196 Fourth outflow channel (outflow channel)
205 Fitting portion 206 Thread bead 207 Direction restricting portion 208 Slit hole

Claims (10)

A housing made of an inelastic material having an inflow path and an outflow path, a valve body made of an inelastic material rotatably provided in the housing, and the valve for communicating or blocking the inflow path and the outflow path A fluid control valve in which an outlet portion of a flow path inside the body is provided on a sliding contact surface with the housing, and a contact sliding member formed of an elastic material including a hole shape is provided in the outlet portion. The fluid control valve according to claim 1, wherein the contact sliding member is made of rubber or elastomer. The fluid control valve according to claim 2, wherein the contact sliding member is configured to be fitted into a valve body, and a thread bead is provided in the fitting portion. The fluid control valve according to claim 2, wherein the contact sliding member is configured to be fitted into a valve body, and a direction regulating portion for regulating a fitting direction thereof is provided. 2. The fluid control valve according to claim 1, wherein the contact sliding member is formed on the surface of the valve body by coating and printing. The fluid control valve according to claim 1, wherein the contact sliding member has a low friction characteristic having a dynamic friction coefficient of 0.8 or less. The fluid control valve according to any one of claims 1 to 6, wherein the contact sliding member is a rubber or an elastomer in which a friction reducing component is reactively fixed. The fluid control valve according to claim 1, wherein the housing has a plurality of outflow passages each branched from the inflow passage. Any one of 1 to 8 provided with drive means having a motor for rotating the valve body, and rotation angle control means for performing selective switching and flow rate control of the plurality of outflow paths by controlling the rotation angle of the motor. The fluid control valve described. A heating means such as a water heater that is provided in a water supply path for supplying cleaning water and that heats the cleaning water; an inflow path that communicates with the water heater; and a housing having a plurality of outflow paths that are branched from the inflow path; A valve body rotatably provided in the housing and an outlet portion of a flow path inside the valve body are provided on a sliding contact surface with the housing, and the outlet portion includes a hole shape by an elastic material. A formed contact sliding member; a fluid control valve comprising a driving means having a stepping motor for rotating the valve body; and first and second fluid passages communicating with the first and second outflow passages of the fluid control valve, respectively. A second washing nozzle, a washing switch for selectively driving the first and second washing nozzles, an operation means having a water flow adjustment switch for adjusting the amount of water, and a rotation angle of the stepping motor according to a signal from the operation means Flow controller of the sanitary washing toilet seat provided with a rotation angle control means for controlling.