JP5807144B2 - Nozzle device and sanitary washing device using it - Google Patents

Description

  The present invention relates to a nozzle device that ejects cleaning water for cleaning a local part of a human body.

  Conventionally, this type of nozzle device is provided with a pair of vortex chambers below the spout and applies a fluid oscillation element that automatically oscillates the wash water using the pressure difference caused by the water flow to periodically eject the wash water. Thus, the cleaning range is expanded and the jetting intensity is changed (see, for example, Patent Document 1).

  FIG. 9 shows a configuration in the vicinity of a jet port of a conventional nozzle device described in Patent Document 1. As shown in FIG. 9, an orifice 2 having a reduced channel diameter is provided substantially perpendicular to the water supply channel 1, and the orifice 2 communicates with a main water channel 3 having a large channel diameter. A swirling water channel 4 is provided on both sides of the main water channel 3, and the downstream side of the main water channel 3 communicates with the jet port 5, so that the jet port 5 gradually expands from the inlet side toward the outlet side. Is formed. An air inlet 6 for introducing outside air is provided on the upstream side of the main water channel 3.

  The line purified water that has flowed in from the water supply channel 1 passes through the orifice 2 and flows into the main water channel 3 and ejects from the jet outlet 5, but a part of the wash water that has flowed into the main water channel 3 flows into the swirl channel 4 and turns By generating a flow, the flow of the cleaning water in the main water channel 3 is drawn toward one of the swirling water channels 4, and the cleaning water ejected from the ejection port 5 is also attracted and ejected in the same manner. In this state, the pressure in the other swirling channel 4 is increased, a pressure difference in the swirling channel 4 is generated, the washing water in the main channel is drawn to the opposite side, and the washing water ejected from the jet outlet 5 is also drawn in the opposite direction. Is erupted. By repeating the above operation, the cleaning water automatically oscillates and can be ejected in an oscillating flow. Further, by introducing outside air from the air inlet 6 provided in the main water channel 3, the volume of the washing water is increased, the action of blocking the jet port 5 is increased, and the pressure difference between the swirling channels is increased. Oscillation can be made more stable.

JP-A-3-279525

  However, in the conventional configuration, since it is an essential component to provide two swirl flow paths for oscillating the wash water below the jet nozzle, the tip portion of the nozzle is enlarged, and in particular In a combined function nozzle device in which a plurality of jet nozzles such as a butt cleaning and a bidet cleaning are provided in one nozzle, it is very difficult to implement due to the increase in size and complexity of the structure. . In addition, since a swirling flow path configured by a curve is provided immediately below the jet outlet, there is a concern that the swirling flow path may be blocked by dirt entering from the jet outlet and the transmission function cannot be performed. There is room for improvement in these respects. Had.

  The present invention solves the above-described conventional problems, and a nozzle device that can eject a vibration flow that is easy to implement even in a composite nozzle and that does not cause functional degradation due to contamination or the like, with a small and simple configuration. The purpose is to provide.

In order to solve the above-described conventional problems, a nozzle device of the present invention is provided at a tip of a nozzle body, a nozzle outlet that ejects cleaning water, communicates with the nozzle, and supplies cleaning water. The main water channel having a substantially cylindrical shape, and the jet outlet has a two-stage configuration in which a small hole portion having a small opening area in the original portion and a large hole portion having a large opening area in the tip portion are connected to each other. The opening area is larger than the opening area of the small hole portion, and the main water channel and the small hole portion are connected to each other by forming an annular stepped portion on the entire circumference, and a pressure communication path that connects at least two opposing portions of the stepped portion is provided. It is a nozzle device provided in the nozzle body.

  As a result, the washing water flowing into the small hole portion from the main water channel is swirled at the step portion, so that a part of the washing water is peeled off from the wall surface at the small hole portion serving as the inlet of the jet port, and the pressure is reduced. Ascending, a part of the gas adheres to the wall surface and the pressure decreases. Due to the pressure difference, a secondary flow is generated through the pressure communication path from the high pressure separation side to the low pressure adhesion side, and the attached flow is transferred to the separation flow by the action of the secondary flow. However, when the pressure rises, a reverse pressure difference is generated. When the pressure difference is reversed, a secondary flow in the opposite direction is generated. By repeatedly performing these actions, it is possible to oscillate the cleaning water flowing into the small hole portion by alternately moving the adhering portion and the peeling portion. When the washing water that has become an oscillating flow flows from the small hole into the large hole, a vortex is generated, so that the pulsation can be amplified and the washing water ejected from the jet outlet has a strong pulsating vibration flow. can do.

  In addition, the vibration flow can be implemented with a small and simple configuration of only the main water channel, the pressure communication channel, and the two-stage jet nozzle, so that the nozzle device with high cleaning power and feeling of cleaning can be realized with a small and simple configuration. It becomes possible to carry out.

  Further, the sanitary washing device of the present invention includes the nozzle device of the present invention, a cleaning water supply unit that supplies cleaning water to the nozzle device, a control unit that controls the nozzle device and the cleaning water supply unit, and an upper surface of the toilet bowl. It has a toilet seat to be placed.

  As a result, the cleaning water ejected toward the local area becomes a jet with an oscillating flow, so that the cleaning power is enhanced, and a sense that the cleaning is strong against the human body is generated. Therefore, a hygienic cleaning device that is hygienic and easy to use is provided. be able to.

  The nozzle device of the present invention can generate an oscillating flow having a high cleaning power and a high cleaning feeling with a small and simple configuration.

The perspective view of the state installed in the toilet bowl in the sanitary washing apparatus in Embodiment 1 of this invention The perspective view which shows the external appearance of the nozzle apparatus in Embodiment 1 of this invention. (A) is sectional drawing in the bidet washing position of the nozzle apparatus in Embodiment 1 of this invention, (b) is detailed sectional drawing of the front-end | tip part. (A) is sectional drawing in the butt washing position of the nozzle apparatus in Embodiment 1 of this invention, (b) is detailed sectional drawing of the front-end | tip part (A) is a top view of the nozzle unit in Embodiment 1 of this invention, (b) is the same sectional drawing. Sectional drawing of the front-end | tip part of the nozzle body in Embodiment 1 of this invention Sectional perspective view which shows the detail of the bending part of the nozzle main body in Embodiment 1 of this invention. (A) is a schematic diagram explaining the vibration action of the buttocks outlet in Embodiment 1 of this invention, (b) is a schematic diagram explaining the communication action of a pressure communicating path Sectional view of the main part of a conventional nozzle device

  According to a first aspect of the present invention, there is provided a nozzle main body, a jet outlet that is installed at a tip portion of the nozzle main body and ejects cleaning water, and a substantially cylindrical main water channel that communicates with the jet outlet and supplies cleaning water. The spout has a two-stage configuration in which a small hole portion having a small opening area in the original portion and a large hole portion having a large opening area in the tip portion are connected, and the opening area of the main water channel is A pressure communication passage that is larger than the opening area of the small hole portion, and that the main water channel and the small hole portion are connected to each other by forming an annular step portion over the entire circumference and communicating at least two opposing portions of the step portion. Is a nozzle device provided in the nozzle body.

  As a result, the washing water flowing into the small hole portion from the main water channel generates vortices at the step portion, so that a part of the washing water peels off from the wall surface at the small hole portion serving as the inlet of the jet outlet and the pressure rises. However, a part of the gas adheres to the wall surface and the pressure decreases. Due to the pressure difference, a secondary flow is generated through the pressure communication path from the high pressure separation side to the low pressure adhesion side, and the attached flow is transferred to the separation flow by the action of the secondary flow. As the pressure rises, a reverse pressure difference is generated. When the pressure difference is reversed, a secondary flow in the opposite direction is generated. By repeatedly performing these actions, it is possible to oscillate the cleaning water flowing into the small hole portion by alternately moving the adhering portion and the peeling portion. When the washing water that has become an oscillating flow flows from the small hole into the large hole, a vortex is generated, so that the pulsation can be amplified and the washing water ejected from the jet outlet has a strong pulsating vibration flow. can do.

  In a second aspect of the invention, particularly in the first aspect of the invention, the pressure communication passage communicates with a gap provided between an outer peripheral wall of the main water channel and the stepped portion at a back end of the gap. And an annular pressure communication chamber that goes around the outside of the section.

  As a result, the pressure communication passage can be adapted to the pressure difference generated at all locations of the stepped portion, and the vibration flow can be generated reliably, and the pressure electric passage is implemented with a simple configuration. be able to.

  In a third aspect of the invention, particularly in the first or second aspect of the invention, the main water channel and the jet port are connected so that their axial centers intersect at a predetermined angle.

  As a result, the cleaning water in the small hole portion easily generates appropriate peeling and adhesion, and can generate a vibration flow stably.

A fourth invention is, in particular, any one of the invention to a 1-3, a plurality of ejection ports in the nozzle body, comprising a plurality of flow paths for supplying the washing water to the spout, at least one spout Is a two-stage shape in which the small hole portion and the large hole portion are connected.

  Accordingly, a single nozzle body can be provided with a plurality of cleaning functions, and a compact nozzle device can be provided.

  In a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, a cylindrical nozzle cover that covers at least a part of the nozzle body is provided, and the nozzle body and the nozzle cover are slidable with respect to each other. The nozzle cover has an ejection opening corresponding to at least one ejection port of the nozzle body, and the washing water ejected from the ejection port is ejected through the ejection opening.

  As a result, the nozzle body, particularly the vicinity of the nozzle outlet, is covered with the nozzle cover when the cleaning water is ejected, and the nozzle body is less contaminated with cleaning water soiled by cleaning, which is sanitary.

A sixth aspect of the invention is the nozzle device according to any one of the first to fifth aspects, a cleaning water supply means for supplying cleaning water to the nozzle device, a control means for controlling the nozzle device and the cleaning water supply means, It is a sanitary washing device provided with a toilet seat placed on the upper surface of the toilet bowl.

  As a result, the cleaning water ejected toward the local area becomes a jet with an oscillating flow, so that the cleaning power is enhanced, and a sense that the cleaning is strong against the human body is generated. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a perspective view of a sanitary washing device using a nozzle device according to Embodiment 1 of the present invention.

<1> Configuration of Sanitary Washing Device As shown in FIG. 1, the sanitary washing device 10 of the present invention is installed on the upper surface of the toilet bowl 70 and used on the front surface of the main body 20 installed at the rear part of the toilet bowl 70. The toilet seat 40 and the toilet lid 30 are pivotally supported, and when the toilet lid 30 is opened as shown in FIG. 1, the toilet lid 30 stands so as to be positioned at the rearmost part of the toilet seat device 10. . When the toilet lid 30 is closed, the entire surface of the toilet seat 40 is concealed.

  The nozzle device 100 is installed at the front center of the main body 20, the nozzle unit 200 of the nozzle device 100 advances toward the center of the toilet 70, and the user's local area is ejected from a spout provided at the tip of the nozzle unit 100. Wash out the user's local area by spouting wash water. The nozzle unit 100 includes a butt cleaning nozzle part for cleaning the butt and a bidet nozzle part for cleaning a female part.

  A seating detection sensor 21 for detecting a human body seated on the toilet seat 40 is installed at the front corner portion of the main body 20. When the seating detection sensor 21 does not detect a human body, the washing water is ejected from the nozzle device 100. By stopping, the washing water is prevented from being ejected outside the toilet 70 and scattered in the toilet room.

  Inside the main body 20 is a water supply means such as a pump for supplying the cleaning water to the nozzle device 100 and a cleaning water supply means (not shown) provided with a heat exchanger for heating the cleaning water. A drying device (not shown) for blowing hot air to dry the local portion, a nozzle device 100, cleaning water supply means, a control means (not shown) for controlling the drying device, and the like are provided.

  In the toilet room, a human body detection sensor 50 for detecting the user's entry and a remote controller 60 for operating the sanitary washing device are installed.

  The human body detection sensor 50 is attached to the wall surface of the toilet room. The human body detection sensor 50 is a reflective infrared sensor, and detects that a user has entered the toilet room when detecting infrared light reflected from the human body.

  The remote controller 60 is provided with a plurality of operation switches. The remote controller 60 is attached to a place such as a wall surface of a toilet room that can be operated by a user seated on the toilet seat 40, and operates each function of the toilet seat device.

  The control unit of the main body 200 controls the operation of each unit of the toilet seat device 10 based on signals transmitted from the human body detection sensor 50, the remote controller 60, and the seating sensor 21.

<2> Configuration of Nozzle Device FIG. 2 is a perspective view of the overall appearance of the nozzle device in which the nozzle is in the storage position. FIG. 3A is a sectional view of the nozzle device at the bidet cleaning position. ) A detailed sectional view of the tip of the nozzle device is shown. 4A shows a cross-sectional view of the nozzle device at the butt cleaning position, and FIG. 4B shows a detailed cross-sectional view of the tip of the nozzle device. FIG. 5A shows a top view of the nozzle unit, and FIG. 5B shows a cross-sectional view.

  As shown in FIG. 2, the nozzle device 100 has a configuration in which a casing 110 molded from a resin material is combined with an upper case 120 and a lower case 130 that can be separated vertically, and a substantially cylindrical shape is formed at the center of the casing 110. A nozzle guide 111 is formed, and a tip opening 112 is provided at one end of the nozzle guide 111.

  A nozzle shutter 140 that is pivotable up and down is pivotally supported above the tip opening 112 of the nozzle guide 111, and closes the tip opening 112 while the nozzle unit 200 is housed in the nozzle guide 111. When the nozzle unit 200 advances to the cleaning position, the nozzle shutter 140 is opened upward by pushing the tip of the nozzle unit 200 forward. When the nozzle unit 200 is stored in the storage position, the nozzle shutter 200 rotates downward by its own weight. It is the structure which closes.

  A cylindrical nozzle unit 200 is slidably installed in the nozzle guide 111. As shown in FIG. 2, the storage position in which the nozzle unit 200 is stored in the nozzle guide 111, FIG. As shown in FIG. 4A, the nozzle unit 200 can move back and forth between two cleaning positions, a bidet cleaning position and a butt cleaning position, which protrude from the tip opening 112.

  5A and 5B, the nozzle unit 200 includes a substantially cylindrical nozzle body 300, a substantially cylindrical nozzle cover 400 that accommodates the nozzle body 300, and the nozzle cover 400. It comprises the connecting means 500 to be pulled. The nozzle cover 400 includes a nozzle cover body 410 and a nozzle rack block 420 that are integrated. The nozzle cover main body 410 is formed by forming a thin stainless steel plate into a cylindrical shape, the front end surface is a closed surface, the rear end surface is an open surface, and the nozzle main body 300 can be inserted from the rear end surface. Yes.

  The nozzle body 300 and the nozzle cover 400 are slidable with respect to each other, and the nozzle body 300 and the nozzle cover 400 are stopped at a predetermined relative position by the connecting means 500 in the bidet cleaning position and the buttocks cleaning position. It is the composition to do. As shown in FIG. 3 (b), a single jet opening 411 is provided on the upper surface of the nozzle cover main body 410, and is superposed on the bidet cleaning jet outlet 340 of the nozzle main body 300 at the bidet cleaning position. . Further, as shown in FIG. 4B, the butt cleaning jet outlet 320 is superposed at the butt cleaning position. The jet opening 411 has a larger opening than the bidet washing jet outlet 340 and the buttocks washing jet outlet 320, and the washing water hits the jet opening 411 so that the jet is not hindered.

  As shown in FIG. 5B, a slit-shaped rack opening that fits into the nozzle rack block 420 is provided at the rear of the lower surface of the nozzle cover main body 410, and the cleaning water in the nozzle cover main body 410 is provided at the front of the lower surface. A drain port 412 for discharging the water is provided. A tooth-shaped rack 421 is formed on the lower surface of the nozzle rack block 420 over substantially the entire length.

The nozzle body 300 has an outer diameter that is slightly smaller than the inner diameter of the nozzle cover 400, and has a dimensional relationship that allows the nozzle body 300 and the nozzle cover 400 to slide smoothly with respect to each other.

  Further, as shown in FIGS. 3A and 4A, a nozzle driving means 113 is installed in the lower part of the casing 110. The nozzle driving means 113 includes a drive motor 114, a plurality of transmission gears (not shown), and a pinion gear 115. The pinion gear 115 is a position that meshes with a rack 421 installed on the lower surface of a nozzle rack block 420 that constitutes the nozzle cover 400. It is installed in. The rotation of the drive motor 114 is transmitted to the pinion gear 115 at a reduced speed through the transmission gear, and the nozzle cover 400 having the rack 421 is slidable by the rotation of the pinion gear 115. The drive motor 114 is connected to control means (not shown), and operation is controlled by the control means. In addition, a rotation detection sensor (not shown) for detecting the rotation speed of the drive motor 114 is installed at the rear of the drive motor 114.

<3> Configuration of Nozzle Body FIG. 6 shows a detailed cross-sectional view of the tip of the nozzle body, and FIG. 7 shows a cross-sectional perspective view of the tip of the nozzle body.

  As shown in FIG. 5B and FIG. 6, the inside of the nozzle body 300 molded with a resin material includes a butt cleaning channel 310 and a bidet cleaning channel 330 substantially parallel to the axis of the nozzle body 300. Two flow paths are formed. The buttocks cleaning channel 310 is disposed in the lower part of the nozzle body 300, and the bidet cleaning channel 330 is disposed in the upper part of the nozzle body 300. At the rear ends of the buttocks cleaning channel 310 and the bidet cleaning channel 330 are provided an ass cleaning water supply port 319 and a bidet cleaning supply port 339 into which cleaning water supplied from the cleaning water supply means flows. .

  Also, a butt cleaning jet 320 is provided on the top surface of the tip of the nozzle body 300, and a bidet cleaning jet 340 is provided on the rear end side of the butt cleaning jet 320. Hereinafter, the direction of the front end portion of the nozzle body will be described as the front end side, and the direction of the rear end portion will be described as the rear end side.

  The buttocks cleaning flow path 310 has a flow path of about φ3.0 to 3.5 mm arranged substantially in parallel with the axis of the nozzle body 300 from the rear end of the nozzle body 300 to the vicinity of the front end, as shown in FIG. As described above, the front end of the nozzle main body 312 is connected to a substantially cylindrical main water channel 312 disposed directly below the bottom cleaning jet outlet 320 via a bent portion 311 that is bent at a substantially right angle upward. It is connected to the butt cleaning outlet 320 provided on the upper surface.

  As shown in FIG. 7, about half of the flow path of the bent portion 311 is formed by a curved portion 313 in which the outside of the flow channel is formed with a gently curved surface and the buttocks cleaning flow channel 310 and the main water channel 312 are smoothly connected. The other half is squared to change the direction of the flow path to a substantially right angle. By forming the bent portion 311 in such a shape, the flow velocity varies depending on the location of the flow path, so that a swirl component can be imparted to the cleaning water.

  The main water channel 312 has a cylindrical shape with a cross-sectional area substantially equal to the buttocks cleaning channel 310, and the upper end thereof is connected to the buttocks cleaning jet outlet 320.

  As shown in FIG. 7, the bottom jet outlet 320 has a small hole portion 321 having a diameter of about 1.5 to 1.7 mm with a small opening area in the original portion and a diameter of about 1.9 to 2 at the tip portion having a large opening area. It is formed in a two-stage shape consisting of a large hole portion 322 of 1 mm.

A step portion 314 is formed at a connecting portion between the main water channel 312 having a large opening area and the small hole portion 321 of the bottom cleaning jet outlet 320 having a small opening area, and the main water channel 312 is formed on the outer periphery of the step portion 314. A gap 315 is provided along the outer peripheral wall. The back end of the gap 315 communicates with a pressure communication chamber 316 provided above the main water channel 312. The pressure communication chamber 316 is formed in an annular shape so as to go around the small hole portion 321 and communicates with the gap 314 over the entire circumference. Since the pressure communication passage 317 is formed by the gap 315 and the total pressure passage chamber 316, the high pressure applied from the main water channel 312 to a specific portion of the step portion 314 passes through the pressure communication passage 317 in the step portion 314. It is transmitted to the opposite location and has the function of increasing the pressure at that location.

  Further, the bottom cleaning jet outlet 320 is formed so that the upper portion of the axial center thereof is inclined to the rear end side of the nozzle body 300 by about 7 degrees with respect to the axial center of the main water channel 312. By forming in this way, the cleaning water is easy to peel off at the wall surface on the rear end side of the small hole portion 321 and easily adheres to the front end side, and the balance of the water flow can be lost. It can be made easier.

  The corner portion where the small hole portion 321 and the large hole portion 322 are switched is formed in an edge shape that stands substantially at a right angle. By forming it in an edge shape, flow separation is likely to occur, and a part of the washing water ejected from the small hole portion 321 adheres to the side wall of the large hole portion 322, thereby causing the vibration flow ejected from the large hole portion 322. The pulsation is amplified and ejected. Since the washing water that has become an oscillating flow hits the local area, the sensation that the washing power is increased and the human body is strongly washed occurs, so that an effect that feels stronger than the load actually applied to the local area and gives high satisfaction is born.

  The bidet cleaning flow path 330 is disposed approximately parallel to the axis of the nozzle body 300 with a flow path diameter of about 3.0 to 3.5 mm from the rear end of the nozzle body 300 to the vicinity of the front end. The tip portion is bent substantially perpendicularly through a water chamber 332 disposed below the bidet cleaning jet port 340 through an orifice 331 narrowed to about φ1.0 to 1.5 mm, and the bidet cleaning jet port 340 is bent. It is connected to.

  The water chamber 332 has a wider cross-sectional area than the bidet cleaning flow path 330, and the tip side thereof is formed with a curved surface that curves upward, so that the cleaning water flowing in from the bidet cleaning flow 330 has a flow velocity in the water chamber 332. In a state where the pulsation component of the washing water is reduced and flows into the bidet washing jet outlet 340 along the curved surface.

  The bidet washing spout 340 has a cylindrical shape with a diameter of about 1.8 mm on the inlet side, and the outlet side gradually expands from about half. The entrance portion of the bidet washing spout 340 is formed in a small aspect over the entire circumference, and allows the washing water flowing in from the water chamber 331 to flow smoothly and stably, and jet out washing water with less pulsating components. Can do.

  In order to form the nozzle body 300 having the above-described configuration, the nozzle body 300 is formed of three parts in the present embodiment. As shown in FIG. 6, a nozzle lid member 302 provided with a butt cleaning jet outlet 320 and a bidet cleaning jet 340 is formed on a nozzle body base material 301 formed by integrally molding the butt cleaning flow path 310 and the bidet cleaning flow path 340. The nozzle bottom member 303 forming the bent portion 311 of the buttocks cleaning channel 310 is joined by welding.

  In particular, the gap 314 and the pressure communication path 314 formed at the connecting portion between the main water channel 312 and the buttocks washing outlet 320 are formed by providing a gap at the joint between the nozzle body base material 301 and the nozzle lid member 302. Therefore, the dimensional accuracy and assembly accuracy of each part in each part are important.

<4> Operation and Action of Nozzle Device The operation and action of the nozzle device configured as described above will be described below.

First, in the storage state where the nozzle shown in FIG. 2 is not used, the nozzle cover 400 is located at the rearmost part of the nozzle guide 111, and the nozzle body 300 is also located at the rearmost part of the sliding range. The nozzle cover 400 is disposed at the most retracted position, this position is referred to as a storage position, and this state is referred to as a storage state. At this time, the ejection opening 411 of the nozzle cover 400 is superposed with the bidet cleaning ejection port 340 of the nozzle body 300.

  When starting cleaning from the housed state, first, the user operates the remote controller 60 to start the control, and the rotation of the drive motor 114 is transferred to the pinion gear 115 via a plurality of transmission gears. The nozzle cover 400 having the rack 421 engaged with the pinion gear 115 is transmitted to the rear by being transmitted. However, since the nozzle cover 400 cannot be moved further rearward, the position in the front-rear direction does not change. With this position as the origin, the subsequent positions of the nozzle cover 400 can be controlled while estimating the amount of movement of the nozzle cover 400 by detecting the rotational speed of the drive motor 114 with the rotational speed detection sensor.

  Next, the drive motor 114 is reversely rotated to move the nozzle cover 400 forward. At this time, the nozzle body 300 moves forward in a state of being pulled and integrated with the nozzle cover 400 by the connecting means 500.

  When the user's operation is a bidet cleaning operation, as shown in FIG. 3A, the nozzle cover 400 moved forward and the nozzle body 300 are moved from the origin state according to a preset control sequence. When the number of rotations of the drive motor 114 reaches the set value, it stops. In this state, the bidet cleaning jet outlet 340 is disposed substantially at the center of the jet opening 411, and the bidet cleaning jet outlet 340 is not concealed by the edge of the jet opening 411.

  In this state, the control means controls the washing water supply means, and the bidet washing is started by passing water through the bidet washing flow path 340. The washing water ejected from the bidet washing outlet 340 is ejected through the ejection opening 411. The cleaning channel is switched and the flow rate is adjusted by the cleaning water supply means.

  Wash water with pulsation supplied from the cleaning water supply means flows into the bidet cleaning flow path 330 through the cleaning water supply port 339, passes through the orifice 331 from the bidet cleaning flow path 330, and flows into the water chamber 331. . During this time, immediately after passing through the orifice and immediately after flowing into the water chamber, the flow rate of the wash water becomes slow, and a vortex is generated and stirred in the wash water, thereby reducing the pulsation of the wash water supply means.

  The wash water flowing from the water chamber 331 to the bidet washing jet outlet 340 can be stably flowed in due to the situation provided over the entire circumference of the entrance portion, and the bidet washing jet outlet 340 expanding toward the outside. The washing water ejected from can eject the washing water with less pulsating components, and can provide a soft feeling of washing.

  At this time, the buttocks washing ejection port 320 is covered with the nozzle cover main body 410, and the sewage generated by the bidet washing is not directly applied, so that it is kept clean.

  When the bidet cleaning is stopped, the drive motor 114 rotates in the reverse direction, and the nozzle cover 400 and the nozzle body 300 move rearward and return to the original storage position.

Next, when the user selects the buttocks cleaning, after confirming the origin position of the nozzle cover 400 as in the bidet cleaning, the drive motor 114 rotates to move forward, and the nozzle cover 400 and the nozzle body Although moving 300 forward is the same as in bidet cleaning, in the case of butt cleaning, the nozzle cover 400 is further moved forward beyond the bidet cleaning position.

  At this time, the nozzle body 300 abuts against a front stopper provided on the nozzle guide 111, and the nozzle body 300 is restricted from moving further forward. When the nozzle cover 400 is further moved forward, the connection of the connecting means 500 is brought into a state where the nozzle body 300 and the nozzle cover 400 are separated, and only the nozzle cover 400 moves forward, as shown in FIG. The ejection opening 411 overlaps with the buttocks cleaning ejection port 340, and the buttocks cleaning ejection port 340 is in a state of being arranged at the approximate center of the ejection opening 411. At this time, the forward movement of the nozzle cover 400 is completed, and the drive motor 114 is stopped. This state is the buttocks cleaning position.

  When the nozzle cover 400 reaches the buttocks cleaning position, the control means controls the cleaning water supply means and starts passing water into the buttocks cleaning flow path 310 via the buttocks cleaning water supply port 319. Butt washing starts. The washing water ejected from the buttocks washing ejection port 320 passes through and is ejected without directly contacting the ejection opening 411. The cleaning channel is switched and the flow rate is adjusted by the cleaning water supply means.

  The washing water that has flowed into the buttocks washing flow path 310 flows into the main water channel 312 via the bent portion 311, but a swirling component is imparted to the wash water by the curved portion 313 formed at a part of the bent portion 311. The

  FIGS. 8A and 8B are schematic views for explaining the operation until the washing water flows from the main water channel 312 into the buttocks washing jet outlet 320 and is ejected. FIG. FIG. 8B is a schematic diagram for explaining the communication action of the pressure communication path. FIG.

  As shown in FIG. 8 (a), the wash water supplied to the main water channel 312 flows into the buttocks washing outlet 320 as indicated by the arrow A, but the opening area of the small hole portion 321 is larger than that of the main water channel 312. Since it is small, a vortex is generated over the entire circumference of the stepped portion 314. However, the generated vortex is not uniform, and in the case of the present embodiment, the buttocks cleaning jet outlet 320 is particularly inclined to the rear end side. The vortex B on the rear end side becomes stronger than the vortex B ′ on the front end side, and the water pressure on the rear end side becomes higher. Further, the washing water that has flowed into the small hole portion 321 has a flow separated from the wall surface as indicated by an arrow C on the rear end side, and a flow attached to the wall surface as indicated by an arrow D on the front end side.

  On the other hand, since a pressure difference is generated between the rear end side and the front end side in the stepped portion 314, the high pressure on the rear end side is transmitted through the gap 315 to the pressure communication chamber 315, and the high pressure in the pressure communication chamber 315 is Propagated by the secondary flow in the direction indicated by arrow E. The high pressure propagated to the tip side is transmitted to the vortex B 'through the gap 314, and the pressure of the vortex B' increases. Then, the pressure of the vortex B ′ on the front end side is increased and the pressure of the vortex B on the rear end side is decreased, whereby the flow on the front end side is separated from the wall surface, and the flow on the rear end side is attached to the wall surface. Become.

  By switching the flow separation and adhesion, the vortex generation and pressure of the stepped portion 314 also change, and this time the high pressure on the tip side is changed by the arrow F through the pressure communication passage 317 including the gap 315 and the pressure communication chamber 316. Propagated to the rear end side by the secondary flow in the direction shown.

  In this way, adhesion and separation occur alternately on the front end side and the rear end side, and by repeating this operation, the cleaning water becomes an oscillating flow, the cleaning range is widened, and the switching is performed at a high speed, so that the water is separated. It becomes a pulsation state.

The washing water that has flowed into the large hole portion 322 from the small hole portion 321 generates a vortex at the step portion by forming an edge shape at the corner where the small hole portion 321 and the large hole portion 322 are switched, and the small hole By further amplifying the pressure fluctuation of the part 321, the jet flow ejected from the large hole part 322 has a strong pulsation, so that the cleaning power is enhanced and the human body feels strong washing. It feels stronger than such a load and produces an effect that gives high satisfaction.

  At this time, the upper portion of the bidet cleaning jet 340 is covered with the nozzle cover body 410, and the sewage generated by the butt cleaning does not directly reach the bidet cleaning jet 340, so the bidet cleaning jet 340 is clean. Kept.

  When stopping the buttocks cleaning, the drive motor 114 rotates in the reverse direction and starts moving the nozzle cover 400 and the nozzle body 300 backward. During the process of moving backward for storage, the rear end of the nozzle body 300 abuts on a rear stopper provided at the rear of the nozzle guide 111, and the nozzle body 300 is restricted from moving further. When the nozzle cover 400 is further moved rearward, the connection means 500 is disconnected, the nozzle body 300 and the nozzle cover 400 are separated, and the nozzle cover 400 is moved relative to the nozzle body 300 whose movement is restricted by the rear stopper. Only move backward, and the ejection opening 411 is superposed on the bidet washing ejection port 340. At this point, the nozzle cover 400 can no longer move rearward, and the drive motor 114 stops.

  As described above, in the present embodiment, the nozzle body 300 including the buttocks cleaning ejection port 320 and the bidet cleaning ejection port 340 for ejecting the cleaning water, and the flow path for supplying the cleaning water to the respective ejection ports, A cylindrical nozzle cover 400 that covers the nozzle body 300 and has one outlet opening 411, a connecting means 500 that connects the nozzle body 300 and the nozzle cover 400, and a nozzle unit 200 that includes the nozzle body 300 and the nozzle cover 400. The nozzle main body 300 and the nozzle cover 400 are configured to be slidable with each other, and a nozzle opening 411 is overlapped at a used outlet. The nozzle cover 400 is slid so as to cause the nozzle cover 400 to eject through the ejection opening 411, so that a plurality of Even nozzle body 300 having an outlet jet opening 411 requires only one, since the deposited conspicuous place of dirt is minimized, cleanliness is improved. Further, since the unused-side jet nozzle is covered with the nozzle cover 400, the nozzle body 300 is not contaminated with the cleaning water soiled by cleaning, which is hygienic.

  Moreover, since the ejection opening 411 is the minimum necessary, the appearance is neat and the nozzle cover 400 has a simple configuration, so that the cost can be reduced.

  In addition, since the nozzle body 300 and the nozzle cover 400 are interlocked via the connecting means 500 so that the relative positions can be switched, one nozzle driving means 113 can select the two driving targets respectively. The device can be driven to a position, and the device can be reduced in size and cost.

  Further, a curved portion 313 is formed in the bent portion 311 of the buttocks cleaning channel 310, and a pressure communication passage 317 including a gap 315 and a pressure communication chamber is provided in a step portion 314 between the main water channel 312 and the buttocks cleaning jet 320. The configuration in which the axis of the water channel 312 and the buttocks cleaning jet 320 is joined while being tilted to form the buttocks cleaning jet 320 in a two-stage shape is a small and simple configuration, and these configurations are adopted. Thus, the cleaning water can be ejected from the butt cleaning outlet 320 as a vibration flow. And since the washing water that has become a vibration flow hits the local area, the cleaning power is increased and the human body feels that it is a strong washing, so it feels stronger than the load actually applied to the local area and has the effect of giving high satisfaction. to be born.

It should be noted that the components such as the curved portion, the pressure communication path, the inclined joint, and the two-stage shape are individually provided with a function that contributes to generate the vibration flow, and all these components are not complete. However, it is possible to generate an oscillating flow with a combination of at least two components.

  Moreover, the water chamber 331 wider than the cross-sectional area of the bidet cleaning flow path 330 is provided, and the inlet portion of the bidet cleaning jet outlet 340 is formed on the entire surface in a phase, so that the cleaning water ejected from the bidet cleaning jet outlet is pulsating component. Therefore, it is possible to provide a comfortable bidet cleaning.

  In the present embodiment, in this embodiment, the gap is provided over the entire circumference of the main water channel, but is not limited to this, and is provided in at least two locations facing the small hole portion. Just do it.

  In the present embodiment, the nozzle unit is composed of two components, ie, the nozzle body and the nozzle cover. However, the present invention is not limited to this, and the nozzle unit may be composed of only the nozzle body.

  In the present embodiment, the nozzle body is configured to have two functions of the buttocks cleaning function and the bidet cleaning function, but the present invention is not limited to this. A configuration having only a single function may be used.

  As described above, since the nozzle device according to the present invention can make the nozzle device capable of ejecting cleaning water having a high cleaning power and a high cleaning feeling in a small and simple configuration, any cleaning device other than local cleaning, etc. It can be applied to other uses.

DESCRIPTION OF SYMBOLS 10 Sanitary washing device 40 Toilet seat 70 Toilet bowl 300 Nozzle body 310 Butt washing flow path (flow path)
312 Main water channel 314 Stepped portion 315 Gap 316 Pressure communication chamber 317 Pressure communication path 320 Butt cleaning jet (spout)
321 Small hole portion 322 Large hole portion 330 Bidet cleaning flow path (flow path)
340 Bidet washing spout (spout)
400 Nozzle cover 411 Spout opening

Claims (6)

A nozzle body;
A jet outlet that is installed at the tip of the nozzle body and jets washing water;
A substantially cylindrical main water channel that communicates with the spout and supplies cleaning water,
The jet port has a two-stage configuration in which a small hole portion having a small opening area in the original portion and a large hole portion having a large opening area in the tip portion are connected,
The opening area of the main water channel is larger than the opening area of the small hole portion, and the main water channel and the small hole portion are connected to each other by forming an annular step portion on the entire circumference,
A nozzle device comprising a pressure communication path in the nozzle body for communicating at least two opposing portions of the stepped portion.   The pressure communication path includes a gap provided between an outer peripheral wall of the main water channel and the stepped portion, an annular pressure communication chamber that communicates with the back end of the gap and circulates outward of the small hole portion. The nozzle device according to claim 1, comprising:   3. The nozzle device according to claim 1, wherein the main water channel and the jet nozzle are connected so that their axial centers intersect at a predetermined angle. A plurality of ejection ports in the nozzle body, comprising a plurality of flow paths for supplying the washing water to the spout, formed in the two-step shape in which connecting a small hole portion and the large opening at least one spout, The nozzle apparatus of any one of Claims 1-3. A cylindrical nozzle cover covering at least a part of the nozzle body is provided,
The nozzle body and the nozzle cover are slidable with respect to each other,
The nozzle cover has an ejection opening corresponding to at least one ejection port of the nozzle body,
The nozzle device according to any one of claims 1 to 4, wherein the washing water ejected from the ejection port is ejected through the ejection opening. The nozzle device according to any one of claims 1 to 4,
Cleaning water supply means for supplying cleaning water to the nozzle device;
Control means for controlling the nozzle device and the washing water supply means;
A sanitary washing device provided with a toilet seat placed on the upper surface of the toilet.