JP2015161095A - Medicine supply mechanism for water closet and pressure reducing valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent washing water from overflowing due to high water pressure of washing water in a medicine supply mechanism for a water closet.SOLUTION: A pressure reducing valve 100 is disposed in a communication pipe connected to a washing water supply pipe. Even when a water pressure of washing water supplied from the washing water supply pipe is equal to or higher than a predetermined value, the water pressure can be lowered to a proper pressure by passing through the pressure reducing valve 100, so that the washing water can be prevented from overflowing from a body case. The pressure reducing valve, in addition to a cylindrical housing 101, includes a valve body 103 for controlling an opening area of a washing water circulation hole; however, it does not penetrate and form a circulation hole for a liquid in the valve body itself, but it forms a notch part 1010 at the housing 101, and a gap between an outer peripheral surface of the valve body 103 and an inner peripheral surface of the communication pipe is made to be a flow passage. Thus, it is suitable as the pressure reducing valve used by being inserted in the communication pipe having a small diameter.

Description

  The present invention relates to a flush toilet chemical supply mechanism and a pressure reducing valve, and particularly when flush water is supplied from a flush water supply pipe to a flush toilet, the flush toilet has a necessary amount for the purpose of disinfection, deodorization, washing, etc. The present invention relates to a medicine supply mechanism for flush toilets for supplying medicine and a pressure reducing valve used therefor.

  Conventionally, it is used in combination with a flush water supply pipe that supplies flush water to the flush toilet. Each time flush water flows into the flush toilet, it is a drug intended for disinfection, deodorization, washing, etc. (usually liquid type) A chemical supply mechanism for flush toilets that supplies (medical solution)) is known. Such a flush toilet bowl medicine supply mechanism has been known to have various structures so far, but basically, the structure shown in Patent Documents 1 and 2 is used. That is, in the main body case, a drug container and a float capable of leaching the drug are disposed, a valve chamber is attached to the main body case, and the valve body disposed in the valve chamber is connected to the float. The valve chamber and the washing water supply pipe are connected by a communication pipe. When washing water flows in the washing water supply pipe, a part of it is taken into the valve chamber via the communication pipe, and further, the medicine is washed by being taken from the valve chamber into the main body case via the communication hole of both. When mixed with water and the float floats up a predetermined amount, the valve body closes the communication hole and restricts the inflow amount of the washing water. When the amount of washing water flowing through the washing water supply pipe decreases and the water pressure decreases, the valve body descends to open the communication hole, and the washing water mixed with the chemical flows out from the communication pipe to the washing water supply pipe. Supplied to flush toilet.

Japanese Patent Publication No.49-21541 JP 2003-96873 A

  The above-described flush toilet drug supply mechanism has a structure in which the drug is diluted by taking in the wash water flowing through the wash water supply pipe. Therefore, a larger amount of washing water is taken in as the pressure of the washing water flowing through the washing water supply pipe is higher. However, the washing water pressure flowing through the washing water supply pipe varies depending on the washing water supply pipe to be attached and is not constant. The drug supply mechanism for flush toilets of Patent Documents 1 and 2 basically has a structure that operates normally even if there is some fluctuation in water pressure, but depending on the facility, the water pressure in the washing water supply pipe is higher than expected. There is a case. Therefore, even if the wash water is vigorously taken into the main body case through the communication pipe and the float rises, the valve body and the float continue to vibrate due to the force of the wash water, and the communication hole is not closed. There is a possibility that the inflow does not stop at an appropriate timing and the washing water overflows from the main body case.

  The present invention has been made in view of the above, and even when the water pressure of the washing water supply pipe is higher than a predetermined level, the medicine supply mechanism for a flush toilet that can appropriately control the inflow amount of the washing water into the main body case, and It aims at providing the pressure-reduction valve used for this chemical | medical agent supply mechanism for flush toilets.

  In order to solve the above-mentioned problems, the flushing toilet medicine supply mechanism of the present invention takes in the washing water from the washing water supply pipe for supplying the washing water to the flush toilet through the communication pipe, and arranges it in the main body case. The medicine supplied from the medicine supply means is mixed with the washing water taken into the main body case, and the washing water mixed with the medicine is discharged into the washing water supply pipe through the communication pipe to the flush toilet. In the medicine supply mechanism for a flush toilet to be supplied, a housing having an outer diameter that can be inserted into the communication pipe and having a wash water circulation hole penetrating in a longitudinal direction inside, and wash water from the wash water supply pipe A pressure reducing valve provided with a valve body that controls an opening area of the washing water circulation hole when taken into the main body case is disposed in the communication pipe.

The housing includes a first tube portion and a second tube portion that are formed with a notch portion provided in the middle in the longitudinal direction and each has a wash water circulation hole penetrating in the axial direction. The valve body is provided at a position corresponding to the notch, and has a structure that forms a flow path of cleaning water between an outer peripheral surface and an inner peripheral surface of the communication pipe to be inserted. preferable.
The housing is inserted and disposed in the communication pipe with the first cylinder portion positioned on the washing water supply pipe side and the second cylinder section positioned on the main body case side, and the valve body includes the main body It is preferable that the opening area of the washing water circulation hole provided in the second cylinder portion located on the case side is controlled.
The valve body is an integrated type having a small diameter portion and a large diameter portion, and is provided so that the large diameter portion is located on the second tube portion side, and the valve body has an axial direction of the housing. When the cleaning water is taken into the main body case from the cleaning water supply pipe, the valve body is arranged on the second cylinder portion side along the shaft. Are in contact with each other, and the opening area of the washing water circulation hole of the second cylinder part is preferably reduced.

  The pressure reducing valve of the present invention takes in the washing water from the washing water supply pipe that supplies the washing water to the flush toilet through the communication pipe, and supplies the medicine supplied from the medicine supply means arranged in the main body case. Used in the flush toilet drug supply mechanism that mixes with the wash water taken into the main body case, flows the wash water mixed with the drug into the wash water supply pipe through the communication pipe, and supplies the flush water to the flush toilet. A pressure reducing valve, which is formed with an outer diameter that can be inserted into the communication pipe, and has a cleaning water circulation hole penetrating in the longitudinal direction therein, and cleaning water is taken into the main body case from the cleaning water supply pipe And a valve body that controls the opening area of the washing water circulation hole, and is disposed in the communication pipe.

The housing includes a first tube portion and a second tube portion that are formed with a notch portion provided in the middle in the longitudinal direction and each has a wash water circulation hole penetrating in the axial direction. The valve body is provided at a position corresponding to the notch, and has a structure that forms a flow path of cleaning water between an outer peripheral surface and an inner peripheral surface of the communication pipe to be inserted. preferable.
The housing is inserted and disposed in the communication pipe with the first cylinder portion positioned on the washing water supply pipe side and the second cylinder section positioned on the main body case side, and the valve body includes the main body It is preferable that the opening area of the washing water circulation hole provided in the second cylinder portion located on the case side is controlled.
The valve body is an integrated type having a small diameter portion and a large diameter portion, and is provided so that the large diameter portion is located on the second tube portion side, and the valve body has an axial direction of the housing. When the cleaning water is taken into the main body case from the cleaning water supply pipe, the valve body is arranged on the second cylinder portion side along the shaft. Are in contact with each other, and the opening area of the washing water circulation hole of the second cylinder part is preferably reduced.

  The present invention includes a pressure reducing valve that is inserted into the communication pipe. Therefore, even when the water pressure of the cleaning water supplied from the cleaning water supply pipe is higher than a predetermined level, it can be reduced to an appropriate water pressure by passing through the pressure reducing valve, and the cleaning water overflows from the main body case. Can be prevented. Further, the pressure reducing valve is not inserted into the communication pipe and exposed to the outside of the communication pipe. Therefore, the existing communication pipe can be used as it is. Moreover, the internal diameter of the existing communicating pipe is about 5-8 mm normally. The pressure reducing valve of the flush toilet drug supply mechanism of the present invention includes a valve body that controls the opening area of the wash water circulation hole in addition to the cylindrical housing, but the outer diameter of the housing is equal to or less than the inner diameter of the communication pipe, Furthermore, if the valve body is provided in the housing, the diameter of the valve body becomes very small, and forming a liquid flow hole through the small valve body requires precise work and also reduces the manufacturing cost. Get higher. However, according to the present invention, a notch is not formed in the housing, but a liquid flow hole is formed in the valve body itself, so that the gap between the outer peripheral surface of the valve body and the inner peripheral surface of the communication pipe is liquid. And is suitable as a pressure reducing valve that is inserted into a small communication pipe.

  Further, the housing has a first cylinder part and a second cylinder part with the notch part interposed therebetween, a washing water circulation hole is formed in each cylinder part, and the valve element disposed in the notch part is divided into a small diameter part and a large diameter part. It is preferable to have a configuration having a portion. Thereby, when the large diameter portion is in contact with the end surface of the second tube portion, the opening area of the wash water circulation hole of the second tube portion can be narrowed to easily reduce the water pressure of the wash water. On the other hand, when the cleaning water flows from the main body case side to the cleaning water supply pipe side, even if the valve body comes into contact with the first tube portion, the small diameter portion causes the large diameter portion and the end portion of the first tube portion to Since a gap through which the liquid flows is ensured, the cleaning water can flow out to the cleaning water supply pipe without resistance.

FIG. 1 is a diagram showing an overall configuration of a flush toilet chemical supply mechanism according to an embodiment of the present invention. FIG. 2 is a view for explaining the internal structure of the main body case of the flush toilet bowl medicine supply mechanism. FIG. 3 is a view for explaining the internal structure in the main body case of the flush toilet bowl medicine supply mechanism. FIG. 4 is an enlarged view of a part A in FIG. 1 and is a view for explaining the arrangement position of the pressure reducing valve. Fig.5 (a) is the perspective view which showed the state which the small diameter part of the valve body contact | abutted to the end surface of the 1st cylinder part, FIG.5 (b) is sectional drawing of Fig.5 (a). FIG. 6A is a perspective view showing a state in which the large diameter portion of the valve body is in contact with the end surface of the second cylindrical portion, and FIG. 6B is a cross-sectional view of FIG. . Fig.7 (a) is a figure for demonstrating the structure of the housing of a pressure-reduction valve, FIG.7 (b) is an AA arrow line view of Fig.7 (a). FIG. 8A is a sectional view of the valve body, and FIG. 8B is a view showing a shaft.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the overall configuration of the flush toilet drug supply mechanism 1 using the pressure reducing valve 100 of the present embodiment will be described. As shown in FIG. 1, the flush toilet chemical supply mechanism 1 takes in the wash water from the wash water supply pipe 200 that supplies the wash water to the flush toilet, and supplies the wash water into the main body case 10 through the communication pipe 110. The medicine is diluted with the washing water taken into the main body case 10, and the washing water mixed with the medicine is again supplied to the washing water supply pipe 200 through the communication pipe 110 as the internal pressure in the washing water supply pipe 200 decreases. It is configured to flow out into the flush toilet.

  The washing water supply pipe 200 is, for example, piped extending in the vertical direction, with the upper end connected to a washing water tank (not shown) and the lower end connected to a flush toilet (not shown). One end 110 a of the communication pipe 110 is connected to the cleaning water supply pipe 200 and the other end is connected to the main body case 10.

  In the present embodiment, the body case 10 of the flush toilet bowl medicine supply mechanism 1 is formed in a substantially rectangular shape when viewed from the front, and includes a plate-like base member 11 located at the rear and a box-like lid member 12 having an open surface. Composed. The lid member 12 is assembled and fixed to the base member 11 by using, for example, an engagement structure between an engagement groove and an engagement claw or a fastener such as a bolt.

  A water container 13 is disposed in the main body case 10, and a medicine supply means is disposed inside the water container 13 as shown in FIG. The medicine supply means only needs to be able to supply a predetermined amount of medicine to be mixed with the washing water when the washing water is taken into the water container 13, and in this embodiment, as shown in FIG. The liquid medicine is filled inside, and the medicine bottle 14 provided by being turned upside down with the leachable bottle cap 14A such as a spongy body facing downward is set.

  An inner lid member 15 having a plurality of elongated holes is fitted into the opening in the upper front wall of the lid member 12, and an outer lid member 16 is mounted on the front surface of the inner lid member 15 so as to cover it. The outer lid member 16 has a large number of slit-shaped openings 16A. The bottom wall of the main body case 10 is provided with a washing water inflow / discharge section 20 connected to a communication pipe 110 connected in the middle of a washing water supply pipe 200 for supplying washing water to the flush toilet.

  The washing water inflow / discharge section 20 includes an upper pipe member 20A and a lower pipe member 20B that is screwed to the outer peripheral surface of the lower end portion of the upper pipe member 20A. A connection port 20 </ b> C serving as a communication connection portion of the communication pipe 19 is provided on the peripheral wall of the lower pipe member 20 </ b> B. Then, the upper end portion of the upper pipe member 20A is passed through the mounting holes in the bottom wall of the main body case 10 and the bottom wall of the water container 13, and the nut member 21 is screwed onto the outer peripheral surface of the upper end portion of the upper pipe member 20A protruding from the mounting hole. By fitting, the main body case 10 and the water container 13 are attached. The nut member 21 has a support hole 21A in the upper end surface through which a valve shaft 24 described later is supported. Further, the nut member 21 is provided with a through hole 21B that is opened in a peripheral wall thereof, and the through hole 21B communicates with a communication hole 20D that communicates the main body case 10 and the cleaning water inflow / discharge portion 20. Allows inflow and discharge of cleaning water.

  A float 22 is stored inside the water container 13 in the main body case 10 so as to freely move up and down. A valve body 23 that operates integrally with the float 22 is connected to the lower end portion of the float 22 via a valve shaft 24 that penetrates the inside of the communication hole 20D of the upper pipe member 20A. 20 is accommodated in the lower pipe member 20B. Moreover, the valve body 23 is formed in a substantially truncated cone shape, and its outer surface is tapered. A valve comprising a conical tapered surface that closes the communication hole 20D when the outer surface of the valve body 23 comes into contact with the inner peripheral surface of the lower end opening of the communication hole 20D of the upper pipe member 20A when the float 22 moves upward. A seat 25 is formed.

  Here, the pressure reducing valve 100 is disposed in the communication pipe 110. Specifically, the communication pipe 110 is inserted and arranged from one end 110 a which is a connection end with the cleaning water supply pipe 200. As illustrated in FIGS. 4 to 8, the pressure reducing valve 100 includes a housing 101, a shaft 102, and a valve body 103.

  The housing 101 is formed in a cylindrical shape whose outer diameter is close to the inner peripheral surface of the communication pipe 110. A flange portion 101 a is formed at one end portion, and the flange portion 101 a is attached so as to be in close contact with the end surface of the one end portion 110 a of the communication pipe 110. The housing 101 has a notch portion 1010 over a predetermined range at a substantially central portion in the longitudinal direction, and a first tube portion 1020 on the side where the flange portion 101a is formed across the notch portion 1010, Two cylindrical portions of the second cylindrical portion 1030 on the opposite side are provided. A notch portion 1010 between the first cylinder portion 1020 and the second cylinder portion 1030 is provided in order to form a washing water flow path with the inner peripheral surface of the communication pipe 110 positioned around the housing 101. . In the present embodiment, it is cut out over the length of about half of the circumference, and the remaining semi-tubular portions 1040 adjacent to the cutout portion 1010 in the circumferential direction are the first tube portion 1020 and the second tube portion. It is a connecting part that connects the part 1030.

  Shaft insertion holes 1021 and 1031 are formed in the central portions of the first tube portion 1020 and the second tube portion 1030, respectively, and outside the peripheral wall portions 1021a and 1031a forming the shaft insertion holes 1021 and 1031, Washing water circulation holes 1022 and 1032 serving as washing water channels are formed. The first cleaning water circulation hole 1022 formed in the first cylindrical portion 1020 is a flow path through which the cleaning water flows without much resistance both when the cleaning water flows in and out, and the size and shape thereof are limited. is not. On the other hand, the 2nd washing water circulation hole 1032 formed in the 2nd cylinder part 1030 is formed in the magnitude | size and shape which are substantially obstruct | occluded in the state with which the below-mentioned valve body 103 is closely_contact | adhered. This point will be further described later.

  The housing 101 having the first cylinder part 1020 and the second cylinder part 1030 described above is integrally formed from a synthetic resin such as vinyl chloride resin, but is inserted into the first cylinder part 1020 and the second cylinder part 1030. A shaft made of metal, preferably stainless steel, is inserted into and supported by the holes 1021 and 1031.

  Since one end of the shaft 102 is inserted into the shaft insertion hole 1021 of the first cylinder portion 1020 and the shaft insertion hole 1031 of the second cylinder portion 1030 on the other end side, the portion corresponding to the notch portion 1010 is exposed. The valve body 103 is disposed in the exposed portion.

  The valve body 103 has a shape in which a cylindrical small-diameter portion 103a along the axial direction and a cylindrical large-diameter portion 103b having a larger outer diameter are integrally formed in the axial direction, A through hole 103c is formed at the center in the axial direction from one end to the other end. Like the housing 101, it is integrally formed of a synthetic resin such as a vinyl chloride resin. The shaft 102 is inserted through the through-hole 103c, and is supported at a position corresponding to the notch 1010 between the first cylindrical portion 1020 and the second cylindrical portion 1030 of the housing 101 described above.

  The through hole 103 c of the valve body 103 is formed with an inner diameter slightly larger than the outer diameter of the shaft 102. Therefore, the valve body 103 can move in the axial direction along the outer peripheral surface of the shaft 102 with almost no resistance. The valve body 103 is supported by the shaft 102 so that the small diameter portion 103a is positioned on the first cylinder portion 1020 side and the large diameter portion 103b is positioned on the second cylinder portion 1030 side.

  Here, in this embodiment, the 2nd washing water circulation hole 1032 formed in the 2nd cylinder part 1030 is formed in the shape which made the long hole of the predetermined width the circular arc shape on the outer side of the surrounding wall part 1031a of the shaft insertion hole 1031. And three are formed at predetermined intervals in the circumferential direction. And the diameter D1 (refer FIG.7 (b)) of the virtual circle which connected the outer periphery of each circular arc of these three 2nd washing water circulation holes 1032 is slightly smaller than the outer diameter of the large diameter part 103b of the valve body 103. For example, it is formed on the conditions that become larger by about 0.1 to 0.5 mm. As described above, the large-diameter portion 103b of the valve body 103 is located on the second cylindrical portion 1030 side. Therefore, when the large-diameter portion 103b of the valve body 103 is in close contact with the end surface of the second cylindrical portion 1030, most of the second washing water circulation hole 1032 is closed. As described above, the second washing water Since the diameter D1 of the imaginary circle connecting the outer circumferences of the respective arcs of the flow hole 1032 is slightly larger than the outer diameter of the large diameter portion 103b of the valve body 103, the large diameter portion 103b of the valve body 103 is the second cylindrical portion 1030. Even if it is in close contact with the end face, the opening area is controlled (reduced) so that each second wash water circulation hole 1032 has a slight gap outside the large-diameter portion 103b. When the washing water flows from the first cylinder part 1020 side to the second cylinder part 1030 side, only this slight gap in the second washing water circulation hole 1032 can pass. The three second wash water flow holes 1032 are formed, thereby forming three support walls 1031b that are integral with the peripheral wall 1031a that forms the shaft insertion hole 1031. The shaft 102 can be supported so as to maintain its shape, and the shaft 102 inserted through the shaft insertion hole 1031 can be stably supported. However, the number and shape of the second washing water circulation holes 1032 are not shown in the figure.

  On the other hand, the small diameter part 103a contacts the valve body 103 with respect to the opposing end surface on the first cylindrical part 1020 side. The small diameter portion 103a is formed with an outer diameter slightly larger than the diameter of the shaft 102 (for example, the small diameter portion 103a is 2.0 mm when the shaft 103 has a diameter of 1.2 mm). Therefore, when the small diameter portion 103a contacts the end surface of the first cylinder portion 1020, the small diameter portion 103a contacts the peripheral wall portion 1021a of the shaft insertion hole 1021 of the shaft 102, and closes the first washing water circulation hole 1022 positioned on the outer side. Never do. Therefore, the first wash water circulation hole 1022 is separated when the small diameter portion 103a of the valve body 103 is in contact with the first tube portion 1020 (the state shown in FIGS. 5A and 5B). 6A and 6B), the cleaning water is always open, and the cleaning water can flow through the first cleaning water circulation hole 1022 without resistance. The first wash water circulation hole 1022 is not blocked by the valve body 103 as long as the first wash water circulation hole 1022 is formed outside the peripheral wall portion 1021a. Is not limited. However, in the present embodiment, the peripheral wall portion 1021a of the shaft insertion hole 1021 is stably supported so as to have the same size and position as the second washing water circulation hole 1032 formed in the second cylinder portion 1030. Three support walls 1021b are formed in the circumferential direction, and three first wash water circulation holes 1022 each having a long hole having a predetermined width in an arc shape are formed therebetween.

  The pressure reducing valve 100 of this embodiment is attached when the pressure of the cleaning water flowing through the cleaning water supply pipe 200 is equal to or higher than a predetermined value. Specifically, the pressure reducing valve 100 is connected to the main body case 10 of the flush toilet bowl drug supply mechanism 1 from the one end 110a which is a connection end with the wash water supply pipe 200 in the communication pipe 110. It is inserted and arranged so as to be on the side (see FIGS. 1 and 4). When washing water having a high water pressure flows through the washing water supply pipe 200, a part of the washing water is taken into the communication pipe 110. However, since the pressure reducing valve 110 is disposed in the communication pipe 110, the washing water Always passes the pressure reducing valve 110. First, the cleaning water that has entered the first cylinder portion 1020 passes through the first cleaning water circulation hole 1022. At this time, the large diameter portion 103b of the valve body 103 is brought into close contact with the end surface of the second cylindrical portion 1030 due to the water pressure of the washing water, and the state shown in FIGS. Thereby, most part of the second washing water circulation hole 1032 is closed. After passing through the first cleaning water flow hole 1022, the cleaning water passes between the outer peripheral surface of the valve body 103 and the inner peripheral surface of the communication pipe 110 in the notch 1010, and is outside the large-diameter portion 103b. An attempt is made to enter the second washing water circulation hole 1032 from a slight gap. The washing water can move without resistance to the position where the notch 1010 is formed. However, when the washing water tries to enter the second washing water circulation hole 1032, it receives a large resistance by the large diameter portion 103 b of the valve body 103. become. Therefore, the amount of washing water passing through the second washing water circulation hole 1032 is reduced, and the water pressure is also lowered. The wash water whose water pressure has dropped is taken into the wash water inflow / discharge portion 20 of the flush toilet drug supply mechanism 1 from the communication pipe 110 through the second wash water circulation hole 1032. After that, it enters the water container 13 in the main body case 10, the float 22 rises, and when the valve body 23 comes into contact with the valve seat 25 located at the lower end opening of the communication hole 20D, the communication hole 20D is closed. Is done. When the washing water is taken into the water container 13, the medicine leached from the medicine bottle 14 is mixed with the washing water.

  When the water pressure of the cleaning water in the cleaning water supply pipe 200 decreases, the valve body 23 moves away from the valve seat 25 and opens the communication hole 20D. When the communication hole 20D is opened, the cleaning water mixed with the medicine flows from the communication pipe 110 toward the cleaning water supply pipe 200. At that time, the washing water mixed with the medicine passes through the pressure reducing valve 100 again. The cleaning water mixed with the chemical enters the pressure reducing valve 100 from the second cylinder portion 1030 side of the pressure reducing valve 100 and passes through the second cleaning water circulation hole 1032. Since the internal pressure of the cleaning water supply pipe 200 is reduced, the valve body 103 has moved to the first tube portion 1020 side as shown in FIGS. 5A and 5B, and the first tube portion The small diameter portion 103 a is in contact with the peripheral wall portion 1021 a of the shaft insertion hole 1021 of 1020. Therefore, the cleaning water mixed with the medicine passes through the second cleaning water flow hole 1032, and then the outer peripheral surface of the large-diameter portion 103 b of the valve body 103 located in the notch 1010 and the inner peripheral surface of the communication pipe 110. , Further passes through the outside of the small diameter portion 103a, enters the first cleaning water circulation hole 1022 without resistance, and flows out from the one end 110a of the communication pipe 110 to the cleaning water supply pipe 200. After flowing out into the washing water supply pipe 200, it flows into the flush toilet.

  As described above, according to the present embodiment, since the pressure reducing valve 100 is disposed in the communication pipe 110, even when the water pressure of the washing water flowing through the washing water supply pipe 200 is higher than usual, the medicine for the flush toilet is reduced. The main body case 10 of the supply mechanism 1 can be taken in, and the valve body 23 vibrates in the cleaning water inflow / discharge section 20 so that the cleaning water flows into the main body case 10 without sufficiently closing the communication hole 20D. You can prevent the situation that continues. In addition, the inner diameter of the existing communication pipe 110 is normally about 5 to 8 mm. However, according to the pressure reducing valve 100 of the above-described embodiment, the valve body 103 itself is not formed with a liquid flow hole penetrating the housing. A notch 1010 is formed in 101, and the gap between the outer peripheral surface of the valve body 103 and the inner peripheral surface of the communication pipe 110 is used as a flow path for the washing water, and is inserted into the small communication pipe 110. It is suitable as the pressure reducing valve 100 to be used. In addition, since the pressure reducing valve 100 of the present embodiment has a structure disposed in the communication pipe 110, a part of the valve mechanism (for example, an opening / closing operation unit) is provided outside the pipe, such as a valve mechanism provided in the middle of the pipe. ) Does not adversely affect the appearance.

DESCRIPTION OF SYMBOLS 1 Flush toilet chemical supply mechanism 10 Main body case 20 Washing water inflow / discharge part 100 Pressure reducing valve 101 Housing 1010 Notch part 1020 First cylinder part 1022 First washing water circulation hole 1030 Second cylinder part 1032 Second washing water circulation hole 102 Shaft 103 Valve body 103a Small diameter portion 103b Large diameter portion

Claims (8)

The washing water was taken into the main body case from the washing water supply pipe for supplying the washing water to the flush toilet through the communication pipe, and the medicine supplied from the medicine supply means arranged in the main body case was taken into the main body case. In the flush toilet flushing agent supply mechanism, the wash water mixed with the wash water flows out into the wash water supply pipe through the communication pipe and is supplied to the flush toilet.
A housing that is formed with an outer diameter that can be inserted into the communication pipe, and that has a cleaning water circulation hole penetrating in the longitudinal direction therein;
When the cleaning water is taken into the main body case from the cleaning water supply pipe, a pressure reducing valve including a valve body that controls an opening area of the cleaning water circulation hole is disposed in the communication pipe. A drug supply mechanism for flush toilets. The housing includes a first tube portion and a second tube portion that are formed with a notch portion provided in the middle in the longitudinal direction and each has a wash water circulation hole penetrating in the axial direction. Become
2. The structure in which the valve body is provided at a position corresponding to the notch and forms a flow path of cleaning water between an outer peripheral surface and an inner peripheral surface of the communication pipe to be inserted. Drug supply mechanism for flush toilets. The housing is inserted and disposed in the communication pipe with the first cylinder part positioned on the cleaning water supply pipe side and the second cylinder part positioned on the main body case side,
The drug supply mechanism for a flush toilet according to claim 2, wherein the valve body has a structure for controlling an opening area of a wash water circulation hole provided in a second cylinder portion located on the main body case side. The valve body is an integral type having a small diameter portion and a large diameter portion, and is provided so that the large diameter portion is located on the second tube portion side,
A shaft disposed along the axial direction of the housing is inserted through the valve body,
When the cleaning water is taken into the main body case from the cleaning water supply pipe, the large diameter portion of the valve body abuts on the second tube portion side along the shaft, and the cleaning water of the second tube portion The drug supply mechanism for flush toilets according to claim 3, wherein the medicine supply mechanism is for reducing the opening area of the flow hole. The washing water was taken into the main body case from the washing water supply pipe for supplying the washing water to the flush toilet through the communication pipe, and the medicine supplied from the medicine supply means arranged in the main body case was taken into the main body case. A pressure reducing valve used for a flush toilet drug supply mechanism that mixes with wash water and flows the wash water mixed with the drug into the wash water supply pipe through the communication pipe and supplies the flush water to the flush toilet.
A housing that is formed with an outer diameter that can be inserted into the communication pipe, and that has a cleaning water circulation hole penetrating in the longitudinal direction therein;
A valve body that controls an opening area of the cleaning water flow hole when the cleaning water is taken into the main body case from the cleaning water supply pipe, and is disposed in the communication pipe. Characteristic pressure reducing valve. The housing includes a first tube portion and a second tube portion that are formed with a notch portion provided in the middle in the longitudinal direction and each has a wash water circulation hole penetrating in the axial direction. Become
The said valve body is provided in the position corresponding to the said notch part, and is a structure which forms the flow path of a washing water between an outer peripheral surface and the inner peripheral surface of the said communication pipe of the insertion object. Pressure reducing valve. The housing is inserted and disposed in the communication pipe with the first cylinder part positioned on the cleaning water supply pipe side and the second cylinder part positioned on the main body case side,
The pressure reducing valve according to claim 6, wherein the valve body is configured to control an opening area of a washing water circulation hole provided in a second cylinder portion located on the main body case side. The valve body is an integral type having a small diameter portion and a large diameter portion, and is provided so that the large diameter portion is located on the second tube portion side,
A shaft disposed along the axial direction of the housing is inserted through the valve body,
When the cleaning water is taken into the main body case from the cleaning water supply pipe, the large diameter portion of the valve body abuts on the second tube portion side along the shaft, and the cleaning water of the second tube portion The pressure reducing valve according to claim 7, wherein the pressure reducing valve has a structure for reducing an opening area of the flow hole.

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