TW202200880A - Sanitary washing device - Google Patents

Abstract

This sanitary washing device comprises: a cleaning nozzle which cleans a human body by discharging cleaning water; a cleaning water flow path which is provided between a supply source and the cleaning nozzle, and which circulates cleaning water from the supply source to the cleaning nozzle; and a flow rate switching mechanism which supplies the cleaning water from the supply source to a cleaning water path. The sanitary washing device further comprises: a flow rate sensor which detects the flow rate of the cleaning water in the cleaning water path; a heat exchanger which is provided on the upstream side from the cleaning nozzle and heats the cleaning water; a flow control valve; and a control unit which controls the flow rate sensor and the heat exchanger. The control unit inputs the flow rate of the cleaning water in the cleaning water path detected by the flow rate sensor, predicts a change in the flow rate of the cleaning water, and controls power supply to the heat exchanger. This makes it possible to provide a sanitary washing device which can maintain the temperature of the cleaning water closer to a target temperature.

Description

Sanitary washing device

The present disclosure relates to a sanitary washing device.

This sanitary washing apparatus heats the washing water for washing the human body to a suitable temperature by a heat exchanger and supplies it to the washing nozzle.

In the past, the following structure was used: a warm water tank was installed on the flow path of the washing water, and the water stored in the warm water tank was first heated to a suitable temperature by an electric heater, and then stored in the warm water tank and kept warm. When the device is in use, the warm water in the warm water tank in the heat preservation state is supplied to the nozzle and sprayed.

However, in the case of such a system, there is a problem that a large amount of electric energy is consumed for the heat preservation of the warm water in the warm water tank.

Therefore, in recent years, a method has been gradually adopted in which the supplied washing water is instantly boiled to a target temperature (set temperature) by heating by a heater of a heat exchanger, and the washing water that has become warm water is heated. It is supplied to the cleaning nozzle (for example, refer to Patent Document 1).

This is because this method is not a method of pre-heating the washing water, storing it in the warm water tank, and letting it flow out of the warm water tank for washing, but heating the washing water passing through the heat exchanger to a predetermined temperature, and then using Since it is configured to spray warm water for washing, it is possible to save electricity. prior art literature Patent Literature

Patent Document 1: Japanese Patent Application Laid-Open No. 11-303181

However, there is a problem in that it may be difficult for the heat exchanger to maintain the wash water at a target temperature due to the influence of water pressure fluctuations, temperature changes, etc. in the water channel, which is the supply source of the wash water.

The present disclosure provides a sanitary washing device that can maintain washing water in a state closer to a target temperature.

The sanitary washing device of the present disclosure includes: a washing nozzle that discharges washing water to wash the human body; A cleaning nozzle; and a flow rate switching mechanism for supplying the cleaning water from the supply source to the cleaning water channel. Furthermore, it includes: a flow rate sensor for detecting the flow rate of the washing water in the washing water passage; a heat exchanger provided on the upstream side of the washing nozzle and heating the washing water; and a control unit for controlling the flow rate switching mechanism , flow sensor and heat exchanger. The control unit inputs the flow rate of the washing water in the washing water channel detected by the flow sensor, and predicts the change in the flow rate of the washing water to control the power supply to the heat exchanger.

The sanitary washing device of the present disclosure can maintain the washing water in a state closer to the target temperature.

Form for carrying out the invention

Hereinafter, embodiments will be described in detail with reference to the drawings.

Furthermore, the attached drawings and the following descriptions are provided for those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the scope of the patent application.

(Embodiment 1) As shown in FIG. 1 , the sanitary washing apparatus 100 is constituted by a main body portion 200 , a toilet seat 300 , and a toilet cover 320 as main components. The main body portion 200 , the toilet seat 300 and the toilet cover 320 are integrally formed, and are provided on the upper surface of the toilet bowl 110 .

The sleeve operation part 210 is provided on the right side part of the main body part 200 so as to protrude forward, and a plurality of switches and indicator lamps for operating and setting various functions of the sanitary washing apparatus 100 are provided.

Furthermore, in the present embodiment, the installation side of the body portion 200 of the sanitary washing device 100 is regarded as the rear, the installation side of the toilet seat 300 is regarded as the front, and the right side facing the front is regarded as the right side, and the The left side of the front is regarded as the left side, and the arrangement of each component will be described.

As shown in FIGS. 3 to 5 , in the main body 200 , from the right, a water supply unit 400 , a heat exchanger 500 , a water pump 600 , a nozzle device 700 , a drying device 220 for drying a part, and a odor during defecation are provided. The deodorizing apparatus 230 etc. which deodorize are provided with the control part etc. which control each function of the sanitary washing apparatus 100 in the upper position of the heat exchanger 500.

In the present embodiment, the water supply unit 400 , the heat exchanger 500 , the water pump 600 , the nozzle device 700 , the drying device 220 , the deodorizing device 230 , and the control unit are hereinafter referred to as various functional components.

Furthermore, various functional parts can be added or removed as necessary.

<Main body structure> The main body portion 200 is composed of a base portion 250 constituting a bottom surface, a rear cover 270 constituting a part of the rear and side surfaces, and a front cover 290 constituting a part of the front and upper surfaces and side surfaces.

The base portion 250 is formed with a convex portion 251 whose width is gradually narrowed from the side surface to the back surface. The rear cover 270 is formed with a groove portion 271 whose width is gradually narrowed from the side surface to the back surface.

The rear cover 270 is attached to the base part 250 by sliding from the rear of the base part 250 to the front direction. When the rear cover 270 is slid and installed, the groove portion 271 and the insertion portion of the convex portion 251 are slid as a guide in a state in which the convex portion 251 is inserted into the groove portion 271 .

Thereby, the installation workability of the rear cover 270 with respect to the base part 250 is improved. In addition, in the state where the rear cover 270 is installed on the base part 250, the gap between the inside and the outside of the main body part 200 is formed into a serpentine shape by the groove part 271 and the convex part 251, so that the liquid can be prevented from flowing into the main body part. 200 Infiltration inside.

A part of the bottom of the rear cover 270 extends to a position below the base part 250 , and can be screwed to a position where the bottom of the base part 250 overlaps with the bottom of the rear cover 270 from the rear cover 270 side.

The front cover 290 can be attached from the front side of the base portion 250 . In the state where the front cover 290 is installed on the base portion 250 , the side surface of the front cover 290 abuts against the outer side of the side surface of the rear cover 270 , thereby restraining the front cover 290 and the rear cover 270 A situation where there is a gap on the side.

As shown in FIG. 10 , the base portion 250 is formed with a groove portion 252 whose width is gradually narrowed from the side surface to the front surface. The front cover 290 is formed with a convex portion 291 whose width is gradually narrowed from the side to the front.

The front cover 290 is attached to the base part 250 by sliding from the front of the base part 250 to the rear direction. When the front cover 290 is slid and installed, the groove portion 252 and the insertion portion of the convex portion 291 are slid as a guide in a state in which the convex portion 291 is inserted into the groove portion 252 .

Thereby, the installation workability of the front cover 290 with respect to the base part 250 is improved. In addition, in the state where the front cover 290 is installed on the base portion 250, the gap between the inside and the outside of the main body portion 200 is formed into a serpentine shape due to the groove portion 252 and the convex portion 291, so that liquid can be suppressed from flowing into the main body portion. 200 Infiltration inside.

As shown in FIG. 8, the front end surface 270a of the rear cover 270 is formed to face forward and to extend in the horizontal direction. The rear end of the front cover 290 has an U-shaped holding portion 290a that holds the front end surface 270a of the rear cover 270, and holds the front cover 290 from the front. Thereby, the clamping part 290a clamps the front end surface 270a of the rear cover 270, and the situation where a clearance gap arises between the front cover 290 and the rear cover 270 is suppressed. The upper surface of the front cover 290 is formed by being bent toward the back of the rear cover 270, and in the state where the front cover 290 is installed, the upper surface of the front cover 290 is gently connected toward the back of the rear cover 270 to form a structure. A part of the rear of the body part 200 . The front cover 290 can be screwed and fixed to the rear cover 270 from the rear side.

Thereby, the seam between the front cover 290 and the rear cover 270 can be made inconspicuous when viewed from the front, and it is possible to suppress the deterioration of the aesthetics. Also, when the liquid drips onto the upper surface of the main body portion 200 , the liquid can be prevented from infiltrating the joint between the front cover 290 and the rear cover 270 and dripping onto the rear cover side.

As shown in FIG. 10 , the inclined surface 240 constituting the lower part of the nozzle device 700 is a slope configured to match the inclination of the nozzle device 700 , and is composed of the front cover 290 and the base part 250 , and is embedded in the inclined surface 240 . combine. The fitting part of the inclined surface 240 is comprised so that it may be located in the upper position in the toilet bowl of the toilet bowl 110 .

The inclined surface 240 can be considered as a configuration formed in the front cover 290, but in this configuration, the fitting portion of the front cover 290 and the base portion 250 is located above the toilet 110, and when water penetrates into the fitting portion , there is a concern that the upper surface of the toilet 110 will be soiled. Moreover, in the case where the fitting portion does not constitute a waterproof structure, the possibility of soiling the upper surface of the toilet bowl 110 is further increased.

In the present embodiment, when water leaks from the nozzle device 700 in the main body 200 , the water can be distributed to the inclined surface 240 to drain the water into the toilet bowl of the toilet 110 . Even if water has penetrated into the fitting portion between the front cover 290 and the base portion 250, since the fitting portion is located in the toilet 110, the surroundings will not be soiled. The fitting portion is completed by the fitting of the groove portion 252 formed in the base portion 250 and the convex portion 291 formed in the front cover 290, so that water hardly penetrates, and the cleaning performance can be improved.

The same effect can be expected even if the main body portion 200 is installed by being inclined toward the rear.

Since the front lower part of the main body part 200 is constituted by the front cover 290, it becomes possible to improve the cleaning workability even when sewage adheres. In addition, if a water removal rib is formed to remove the sewage adhering to the front cover 290, the drainage performance of the toilet bowl 110 can be further improved.

On the bottom surface of the base portion 250 , a rib 253 is formed to protrude upward at a front side end portion to the right of the nozzle device 700 , and a front side position of the water supply unit 400 or the heat exchanger 500 . When water leakage occurs in the component part of the water circuit to the right of the nozzle device 700 , the rib 253 guides the leaked water to the inclined surface 240 and drains the water into the toilet bowl 110 .

Although the front of the inclined surface 240 is covered by a nozzle cover (not shown), the leaked water can be drained from the periphery of the nozzle cover, and can be drained without providing a dedicated drain port. By providing the nozzle cover, the unevenness at the front position of the main body portion 200 where the sewage bounces the most can be eliminated, and the cleaning performance can be improved.

<Damper mechanism> In the present embodiment, the toilet seat 300 and the toilet cover 320 are manually opened and closed, and a damping mechanism is provided so that the toilet seat 300 and the toilet cover 320 are gently closed and closed.

The damping mechanism is shown in FIGS. 12 to 14 . The damper mechanism 241 includes the damper 242 for a toilet seat and the damper 243 for a toilet seat, and the toilet seat 300 is attached to the damper 242 for a toilet seat, and the toilet lid 320 is attached to the damper 243 for a toilet seat.

The damper 242 for a toilet seat and the damper 243 for a toilet cover are fixed by fitting the several latching claws 245 provided in the damper attachment part 244. The damper mounting portion 244 is fixed to the upper left side of the rear cover 270 .

Although the damper 242 for toilet seats and the damper 243 for toilet lids have been configured to be fitted to the damper mounting portion 244 by the locking claws 245, the following situation is conceivable: during long-term use, The damper 242 for a toilet seat or the damper 243 for a toilet cover is disengaged from the latching claw 245, and is disengaged from the damper attachment part 244.

In the present embodiment, a drop-off preventing boss 246 is protruded from the rear cover 270 , and the drop-off preventing boss 246 faces the toilet seat damper 242 and the toilet seat damper 243 and abuts against the toilet seat damper 242 and the toilet seat damper 242 . Cover damper 243. Even when the damper 242 for the toilet seat or the damper 243 for the toilet cover is disengaged from the locking claw 245, since the detachment prevention boss 246 abuts the damper 242 for the toilet seat or the damper 243 for the toilet seat, the toilet seat can be prevented from When the damper 242 or the damper 243 for the toilet cover falls off.

In the present embodiment, the damper 242 for a toilet seat and the damper 243 for a toilet lid are fixed to the damper mounting portion 244 by the locking claws 245, so as to improve the mounting workability and eliminate fixing members such as screws. to reduce material costs.

When it is desired to firmly fix the damper 242 for a toilet seat and the damper 243 for a toilet lid to the damper attachment part 244, it is needless to say that a fixing method such as screw fixing may be used.

In the above-mentioned embodiment, although the damping mechanism is provided so that the toilet seat 300 and the toilet lid 320 are gently closed and closed, the toilet seat 300 and the toilet lid 320 may be opened and closed by a motor.

<Detailed structure of the main body> As shown in FIG. 15 to FIG. 17 , a seat occupancy detection unit 272 is arranged on the toilet seat support part 276 of the rear cover 270 . The seating detection unit 272 is configured to detect that the human body is sitting on the toilet seat 300 .

The seating detection part 272 is used for the seat support part 276 to receive the toilet seat shaft 301 of the toilet seat 300, and the toilet seat shaft 301 will descend downward due to the weight of the human body when a person sits on the toilet seat 300, so that the seat can be seated. The detection unit 272 also detects the downward descent, and detects the sitting of the human body.

As shown in FIGS. 18 and 19 , a through hole 273 is formed on the right side of the rear surface of the rear cover 270 , and a filter 274 for removing foreign matter in the water channel is provided inside the through hole 273 . The filter 274 can be removed from the through hole 273 on the rear surface of the rear cover 270 , so that the foreign matter attached to the filter 274 can be removed.

As shown in FIG. 20 and FIG. 21 , on both sides of the rear cover 270 , there are stoppers 275 near the toilet lid rotating shaft 321 . The stoppers 275 limit the toilet when the toilet lid 320 is opened. The opening angle of the cover 320. The stopper 275 is formed so as to extend from the side surface to the horizontal part so as to be easily wiped off even if it is soiled by the adhesion of dust or the like, so as not to generate a minute gap. In addition, the stopper 275 is connected in an R shape with respect to the vertical part and the horizontal part, and the cleaning property is taken into consideration.

The configuration of the sleeve operation part 210 and the attachment structure for attaching the sleeve operation part 210 to the main body part 200 will be described with reference to FIGS. 22 to 26 .

A mounting portion 211 may be formed between the base portion 250 and the front cover 290 on the right side of the body portion 200 . The attachment portion 211 is provided with the sleeve operation portion 210 .

The sleeve operation part 210 includes a lower cover 212 , an upper cover 213 , an operation board part 214 , and an operation name plate 215 . The operation board part 214 includes an operation board 216 and an operation board part cover 217 , and the operation board 216 and the main body board (not shown) are connected by wires 218 .

The operation board part 214 is fastened to the upper case 213 by screwing, and a sealing material (not shown) is disposed between the operation board part cover 217 and the upper case 213 . The lead wires 218 of the operation board portion 214 are wired to the base portion 250 through the hollow portion 219 formed by the lower case 212 . In addition, the lower case 212 has a structure in which ribs (not shown) for fixing the lead wires 218 are arranged to prevent the lead wires from being bitten during assembly.

After the upper cover 213 and the lower cover 212 are fitted with claws (not shown), the upper cover 213 is fastened to the lower cover 212 with screws from above, and the operation name plate 215 is attached to cover the screws. . A peripheral wall 225 is formed on the upper casing 213 at the fitting portion of the lower casing 212 and the upper casing 213 to cover the mating surface of the lower casing 212 and the upper casing 213 from the outer peripheral side. Thereby, even when liquid is splashed on the sleeve operation part 210, it is possible to prevent the liquid from infiltrating the inside.

A mounting portion 221 for mounting to the mounting portion 211 may be integrally formed with the lower case 212 in the lower case 212 . A groove portion 222 to which the convex portion 251 of the base portion 250 is fitted is formed on the base portion 250 side of the mounting portion 221 . A groove portion 223 into which the convex portion 292 formed on the front cover 290 is fitted is formed on the front cover 290 side of the mounting portion 221 .

The mounting portion 221 is formed larger in the vertical direction and the front-rear direction than the extending portion 224 extending from the lower case 212 toward the mounting portion 221 , and is formed with the base portion 250 at an outer peripheral position than the extending portion 224 . It is fitted with the front cover 290 to constitute a part of the side wall of the main body portion 200 . Since the fitting is performed at an outer peripheral position than the extending portion 224, even when liquid is spilled from above, it is possible to prevent the liquid from infiltrating into the main body portion 200 from the fitting portion. A curved surface is formed between the extending portion 224 and the mounting portion 221, and the cleaning workability is improved.

In the state where the mounting portion 221 is mounted on the mounting portion 211, the gap between the inside and the outside can be formed into a serpentine shape by the fitting of the groove portion 222 and the convex portion 251 and the fitting of the groove portion 223 and the convex portion 292. , and the infiltration of liquid into the interior of the installation portion 221 is suppressed.

In the present embodiment, various functions are operated by the sleeve operation part 210, but it may be operated by a remote control device. In this configuration, the mounting plate provided with the receiving portion and the minimum operation switch can be mounted on the mounting portion 211 by the same mounting structure as the mounting structure of the mounting portion 221 . Thereby, it can correspond to a plurality of models.

<The structure of the base part> Various functional parts for performing various functions of the sanitary washing apparatus 100 are mounted on the base portion 250 . The base portion 250 is provided with a mounting portion 254 on which various functional components are mounted.

FIG. 27 shows the mounting portion 254 of the heat exchanger 500 as an example of the mounting portion. The attachment portion 254 of the heat exchanger 500 is an example, and it goes without saying that other configurations are also possible.

The mounting portion 254 is formed by a locking piece 255 erected from the base portion 250 and an engaging claw 256 formed on the side surface of the heat exchanger 500 .

Since various functional components have different shapes, center of gravity heights, and the like, the shape and the like of the mounting portion 254 can be appropriately selected according to the various functional components.

Various functional parts can be transported on the belt conveyor, and installed on the base portion 250 by an automatic machine, and the locking piece 255 and the engaging claw 256 are engaged, fixed or temporarily fixed to prevent positional deviation.

At the time of manufacture, the base part 250 is moved by being placed on a pallet on a belt conveyor, and various functional parts are fixed by the mounting parts 254 of the various functional parts of the base part 250 by an automatic machine, or Temporarily fixed. When various functional parts are placed on the base part 250, the base part 250 on the pallet will move to a predetermined position, and the various functional parts are screwed and fixed to the base part 250 by an automatic machine as required. .

Since the base portion 250 is formed in a flat plate shape and there is no member covering the base portion 250, it becomes possible to easily perform installation and screwing operations of various functional parts by an automatic machine.

Since the various functional parts can be fixed or temporarily fixed to the mounting part 254 on the base part 250 to prevent the movement of the various functional parts, it is not affected by the vibration during the movement of the belt conveyor, and The screw locking by automatic machine can be completed.

In the present embodiment, the sleeve operation part 210, the water supply unit 400, the heat exchanger 500, the nozzle device 700, the drying device 220, the deodorizing device 230, etc., can be mentioned as various types of the robot mounted on the base part 250. functional parts.

In the present embodiment, the sleeve operation part 210 , the water supply unit 400 , the heat exchanger 500 , the nozzle device 700 , the drying device 220 , and the deodorizing device 230 are provided as various functional parts from the right side of the main body part 200 . The order of the sleeve operation part 210 , the water supply unit 400 , the heat exchanger 500 , the nozzle device 700 , the drying device 220 , and the deodorizing device 230 is fixed.

In addition, in the above-mentioned embodiment, the locking piece 255 is erected vertically upward from the base portion 250 .

However, depending on the structure or shape of various functional parts, the locking piece 255 may be configured to be erected upward in a state inclined with respect to the base portion 250 . If it is such a structure, when assembling by an automatic machine, it is preferable to make the following structure in which the pallet on which the base part 250 is mounted is inclined when various functional parts are mounted.

In addition, although the locking piece 255 is formed on the base portion 250 as the attachment portion 254, and the engaging claws 256 are formed on various functional parts, the engaging claws 256 may be formed on the base portion 250, and various functional parts are formed with the engaging claws 256. The parts form the engaging claws 256 .

The attachment portion 254 may be configured to fix or temporarily fix various functional components to the base portion 250 , and configurations other than the locking piece 255 and the engagement claw 256 may be selected.

In addition, various functional components have holding portions for holding lead wires so as not to interfere with assembly. The lead wire is held by the holding portion before the assembly operation so as not to interfere with the assembly.

In addition, a wiring member (not shown) is provided. In the process of arranging the control unit (not shown) on the right side of the nozzle device 700 and arranging the drying device 220 and the deodorizer 230 on the left side, the wiring member is provided so as not to prevent the A member that supports the lead wire at the upper position of the nozzle device 700 by making the lead wire contact the driving part of the nozzle device 700 . The wiring member is fixed to the housing of the control unit and the drying device 220 . Thereby, the nozzle device 700 does not come into contact with the lead wire during driving, and easy assembly can be achieved.

＜Water supply unit＞ In the base part 250, the water supply unit 400 is arrange|positioned at the rightmost position. The water supply unit 400 is connected to a water channel constituting a supply source of washing water through a hose (not shown) outside the main body 200 .

The water supply unit shown in FIGS. 28 to 31 includes a water pump 600 and has an open water path 405A, and is described below as the water supply unit 400A.

The water supply unit 400A includes a strainer 401A, a constant flow valve 402A, a water stop solenoid valve 403A, a vacuum interrupter 404A, and an open water passage 405A.

The water flowing through the water piping (not shown) is supplied to the strainer 401A as washing water. Contaminants, impurities, etc. contained in the washing water can be removed by the strainer 401A.

The washing water from which dirt, impurities, etc. have been removed by the strainer 401A is supplied to the water stop solenoid valve 403A. The water stop solenoid valve 403A switches the supply state of the wash water to the downstream side. The operation of the water stop solenoid valve 403A is controlled by a control unit (not shown). When the wash water is supplied from the water stop solenoid valve 403A to the constant flow valve 402A, the wash water is supplied to the vacuum interrupter 404A. The constant flow valve 402A controls the flow rate of the washing water flowing in the water supply unit 400A to be constant.

The vacuum interrupter 404A includes a vacuum adapter 406A, a vacuum cover 407A covering the vacuum adapter 406A, and a vacuum interrupter valve 408A supported between the vacuum adapter 406A and the vacuum cover 407A.

The vacuum adapter 406A has an inflow port 409A into which the washing water from the constant flow valve 402A flows, an outflow port 410A to the main water channel, and an outflow port 411A to the open water channel 405A. The vacuum cover 407A includes a suction port 412A.

The water supply unit 400A flows the wash water supplied from the inflow port 409A to the outflow port 410A leading to the main water channel and the outflow port 411A leading to the open water channel 405A. The washing water supplied to the outflow port 410A leading to the main water passage flows to the downstream side by the output of the water pump 600 arranged on the downstream side. The flush water not supplied to the outflow port 410A is guided from the outflow port 411A to the open water passage 405A, and drains into the toilet.

The flow sensor 570, the heat exchanger 500, etc. are arranged on the upstream side of the water pump 600 of the main water path. The flow sensor 570 or the heat exchanger 500, etc., have a large flow resistance. Therefore, in the configuration in which the washing water flows to the downstream side only by the output of the water pump 600, the load on the water pump 600 is large.

In this embodiment, by providing the fixed orifice 413C on the open water channel side, a water pressure equivalent to the flow resistance of the flow sensor 570, the heat exchanger 500, etc. can be applied to the outflow port 410A leading to the main water channel. , and the load on the water pump 600 can be suppressed.

In addition, since the flow rate of the washing water set by the user is smaller, the flow rate through the fixed orifice 413C becomes larger, and the water pressure applied to the outflow port 410 leading to the main water channel becomes larger, and the water pressure applied to the water pump becomes larger. The water pressure at the inlet of 600 also becomes higher, so that the pulsation of the washing water flowing out from the nozzle device 700 can be eliminated, and gentler washing water can be provided. On the contrary, since the flow rate of the washing water set by the user is larger, the flow rate through the fixed orifice 413C will be smaller, and the water pressure applied to the outflow port 410A leading to the main water channel will be smaller, and the flow rate applied to the water pump will be smaller. The water pressure at the inlet of 600 also becomes smaller, so that more powerful washing water can be supplied without eliminating the pulsation of the washing water flowing out of the nozzle device 700 .

The vacuum circuit breaker 404A normally pushes up the vacuum circuit breaker valve 408A by the water pressure by the washing water, so the flow path to the suction port 412A is closed, but when the upstream side becomes negative pressure, The vacuum interrupter valve 408A is lowered, and external air is introduced from the suction port 412A to release the negative pressure on the upstream side, thereby preventing the risk of reverse flow of sewage from the nozzle device 700 or the open water path.

In the embodiment of the water supply unit described above, it is conceivable that the water pump 600 is eliminated.

The water supply unit shown in FIGS. 32 to 34 is a structure in which the water pump 600 is eliminated, and the water supply unit 400B is taken as an example as the water supply unit 400, and will be described below.

The water supply unit 400B includes a strainer 401B, a water stop solenoid valve 403B, a pressure reducing valve 402B, a vacuum interrupter 404B, and an open water passage 405B.

The water flowing through the water piping (not shown) is supplied to the strainer 401B as washing water. Contaminants, impurities, etc. contained in the washing water can be removed by the strainer 401B.

The washing water from which dirt, impurities, etc. have been removed by the strainer 401B is supplied to the water stop solenoid valve 403B. The water stop solenoid valve 403B switches the supply state of the wash water to the downstream side. The operation of the water stop solenoid valve 403B is controlled by a control unit (not shown). When the washing water is supplied from the water stop solenoid valve 403B to the pressure reducing valve 402B, the pressure of the washing water flowing in the water supply unit 400B is reduced to a certain pressure by the pressure reducing valve 402B.

The vacuum interrupter 404B includes a vacuum adaptor 406B, a vacuum cover 407B covering the vacuum adaptor 406B, and a vacuum interrupter valve 408B supported between the vacuum adaptor 406B and the vacuum cover 407B.

The vacuum adapter 406B has an inflow port 409B into which the washing water from the pressure reducing valve 402B flows, an outflow port 410B leading to the main water channel, and an outflow port 411B leading to the open water channel. The vacuum cover 407B includes a suction port 412B.

The vacuum circuit breaker 404B is arranged on the downstream side of the pressure reducing valve 402B, and the flush water pressure-reduced to a certain pressure by the pressure reducing valve 402B is supplied into the vacuum circuit breaker 404B from the inflow port 409B, and flows to the outflow port 410B .

In the vacuum interrupter 404B, since the vacuum interrupter valve 408B is normally pushed up by the washing water by hydraulic pressure, the flow path to the suction port 412B is closed. When the upstream side becomes negative pressure, the vacuum interrupter valve 408B is lowered, and external air is introduced from the suction port 412B to release the negative pressure on the upstream side, thereby preventing the risk of backflow of sewage from the nozzle device 700 or the open water path.

It is conceivable that in the embodiment of the water supply unit described above, a water pump and a pressure reducing valve are added.

The water supply unit shown in FIGS. 35 to 37 is a structure in which a water pump 600 and a pressure reducing valve 402C are added, and the water supply unit 400C is taken as an example as the water supply unit 400, and will be described below.

The water supply unit 400C includes a strainer 401C, a water stop solenoid valve 403C, a pressure reducing valve 402C, a vacuum interrupter 404C, and an open water passage 405C.

The water flowing through the water piping (not shown) is supplied to the strainer 401C as washing water. Contaminants, impurities, etc. contained in the washing water can be removed by the strainer 401C.

The washing water from which dirt, impurities, etc. have been removed by the strainer 401C is supplied to the water stop solenoid valve 403C. The water stop solenoid valve 403C switches the supply state of the wash water to the downstream side. The operation of the water stop solenoid valve 403C is controlled by a control unit (not shown). When the washing water is supplied from the water stop solenoid valve 403C to the pressure reducing valve 402C, the pressure of the washing water flowing in the water supply unit 400C is reduced to a certain pressure by the pressure reducing valve 402C.

The vacuum interrupter 404C includes a vacuum adaptor 406C, a vacuum cover 407C covering the vacuum adaptor 406C, and a vacuum interrupter valve 408C supported between the vacuum adaptor 406C and the vacuum cover 407C.

The vacuum adapter 406C has an inflow port 409C into which the washing water from the pressure reducing valve 402C flows, an outflow port 410C to the main water channel, and an outflow port 411C to the open water channel. The vacuum cover 407C includes a suction port 412C.

The vacuum interrupter 404C is arranged on the downstream side of the pressure reducing valve 402C. The washing water can be decompressed to a certain pressure by the decompression valve 402C, supplied into the vacuum interrupter 404C from the inflow port 409C, further decompressed by passing through the fixed orifice 413C, and flows to the outflow port 410C.

Because the lower the cleaning flow rate set by the user, the smaller the flow rate through the fixed orifice 413C, and the greater the water pressure applied to the outflow port 410C, the higher the water pressure applied to the inlet of the water pump 600. The larger it is, the pulsation of the washing water flowing out of the nozzle device 700 can be eliminated, and milder washing water can be provided. Conversely, because the more the cleaning flow rate is set by the user, the more the flow rate through the fixed orifice 413C will become, and the water pressure applied to the outflow port 410C will become smaller, and the water pressure applied to the inlet of the water pump 600 will become smaller. It also becomes smaller, so that more powerful washing water can be provided without eliminating the pulsation of the washing water flowing out of the nozzle device 700 .

Since the vacuum interrupter 404C normally pushes up the vacuum interrupter valve 408C by the water pressure by the washing water, the flow path to the suction port 412C is closed. When the upstream side becomes negative pressure, the vacuum interrupter valve 408C is lowered, and external air is introduced from the suction port 412C to release the negative pressure on the upstream side, thereby preventing the risk of backflow of sewage from the nozzle device 700 or the open water path.

In case the sewage is to flow backward from the nozzle device 700, the flow path of the sewage flowing in from the outflow port 410C can be reduced by the fixed orifice 413C, so that the reverse flow of the sewage can be suppressed. Hereinafter, the outflow port 410A, the outflow port 410B, and the outflow port 410C will be collectively referred to as the outflow port 410 . In addition, the vacuum interrupter, the vacuum interrupter valve, the suction port, the fixed port, etc. are also collectively referred to by the same representation as the outflow port 410 .

＜Heat exchanger＞ A heat exchanger 500 is disposed at a position on the left side of the water supply unit 400 of the base portion 250 . The outflow port 410 of the water supply unit 400 and the heat exchanger 500 are connected by a flexible hose (not shown).

The heat exchanger 500 is described in detail below with reference to FIGS. 38-50 .

The heat exchanger 500 is formed in a low-height rectangular parallelepiped shape, and a surface with a wide area is placed on and fixed to the base portion 250 .

The heat exchanger 500 includes a lower case 510, an upper case 520, and a front structure 530 formed of a heat-resistant resin. The lower cover 510 and the upper cover 520 are integrally formed by welding or the like, and the front structure 530 can be integrally formed at the front thereof by welding or the like.

In the front structure 530 , an inlet cylindrical portion 532 is formed to protrude vertically upward at the right position of the upper surface. In the front structure 530 , an outlet cylindrical portion 534 is formed to protrude vertically upward at a left position of the upper surface.

By arranging the inlet cylindrical portion 532 on the right side of the heat exchanger 500, the interval with the water supply unit 400 can be shortened, the piping connecting the water supply unit 400 and the inlet cylindrical portion 532 can be shortened, and the piping workability can be improved.

A temperature detection part mounting part 521 is formed on the upper surface of the upper casing 520 by a rib area. In the present embodiment, the temperature detector uses a thermal fuse 522 , and the thermal fuse 522 and the wiring 523 for the thermal fuse 522 are arranged on the temperature detector mounting portion 521 . Since the temperature of the heater structure 580 of the heat exchanger 500 is set so that the inlet 531 side is higher than the outlet 533 side, the thermal fuse 522 is installed at a position corresponding to the flow path on the inlet 531 side. The part of the temperature detection part attachment part 521 to which the thermal fuse 522 is attached is comprised so that the wall thickness may be set thin, and the empty burning of the heat exchanger 500 can be detected more reliably. The temperature detection part mounting part 521 is covered by the temperature detection part cover 540 fixed to the upper casing 520 . The thermal fuse 522 has a circuit configuration that blocks only the power supply to the heat exchanger 500 .

In the heat exchanger 500, a flow sensor 550 is installed in the inlet cylindrical portion 532 and a hot water discharge block 560 is installed in the outlet cylindrical portion 534 through a common ground connection terminal plate 565, respectively.

The terminal plate 565 is formed of a single metal plate, and is connected to a ground terminal (not shown) connected to the power supply ground. The terminal board 565 often comes into contact with washing water at the inlet 531 and the outlet 533 . Thereby, even when the basic insulation of the heater structure 580 is broken, it is possible to prevent leakage of electricity through the washing water from leaking to the user or the water pipe.

As shown in FIGS. 42 to 44 , the flow sensor 570 includes a flow sensor housing 571 , a flow sensor housing cover 572 , a water inlet temperature sensor 573 , a water inlet temperature sensor fixture 574 , and a flow sensor The detector shaft 575 , the impeller 576 , and the detection unit 577 that detects the rotational speed of the impeller 576 .

The flow sensor case 571 includes an inflow port 578 that flows in from the water supply unit 400 and an outflow port 579 that leads to the heat exchanger 500 .

A flow sensor shaft 575 is installed between the flow sensor housing 571 and the flow sensor housing cover 572 , and the impeller 576 is installed on the aforementioned flow sensor shaft 575 . The inflow port 578 is arranged to supply wash water from the lower front to the tangential direction of the impeller 576, and the impeller 576 rotates around the flow sensor shaft 575 by the supplied wash water. The detection part 577 is arrange|positioned at the upper part of the flow sensor 570, and detects the rotation number of the impeller 576, and outputs a measured flow rate value to a control part. Thereby, it can suppress that the detection part 577 becomes incapable of detecting the rotation number of the impeller 576 because dirt or the dirt tends to accumulate below.

In the flow sensor housing 571 , the inlet water temperature sensor 573 is fixed by the inlet water temperature sensor fixture 574 . The water entry temperature sensor 573 is installed in the following manner: the metal part is covered with the water entry temperature sensor fixture 574 so that the metal part is not exposed outside the flow sensor 570 . Thereby, even if the insulation of the lead wires wired around is damaged, it is still possible to prevent the leakage of electricity to the washing water through the metal part of the water inlet temperature sensor 573 .

The washing water flowing around the impeller 576 flows out from the front upper part to the left, and flows through the inlet water temperature sensor 573 to the outflow port 579 .

Furthermore, in the present embodiment, although the flow sensor 570 is attached to the inlet 531 , it may be attached to the downstream of the outlet 533 . In this configuration, since the wash water warmed by the heat exchanger 500 is supplied to the flow sensor 570 , the risk of scale adhering to the inside of the flow sensor 570 increases. Therefore, the method of this embodiment is superior in quality.

The structure of the inner space of the heat exchanger 500 will be described with reference to FIGS. 45 to 50 . In addition, the heater structure 580 on the lower side of FIG. 46 is shown in the state turned 180 degrees.

In the inner space of the heat exchanger 500 , the heater structure 580 is arranged in the horizontal direction, and is sandwiched and fixed by the upper case 520 and the lower case 510 with the lower sealing body 581 and the upper sealing body 582 interposed therebetween.

The heater structure 580 has a terminal portion 583 at the center portion of the side end portion of the front structure 530 . The terminal portion 583 connects a lead wire (not shown) to the heater of the heater structure 580 through the front structure 530 . The lead wire connected to the terminal portion 583 is drawn out through a lead-out path (not shown) formed in the front structure body 530 . In the heater structure 580, a plurality of through holes 584 constituting a part of the flow path are formed on the end portion side facing the end portion where the terminal portion 583 is provided.

The inner space of the heat exchanger 500 is divided into an up-down direction by the heater structure 580, and the divided upper space and the lower space are formed to have almost equal volumes. In the upper space and the lower space, an upper sealing body 582 and a lower sealing body 581 made of silicone rubber are disposed, respectively.

The upper sealing body 582 has a surrounding sealing body 582a, a partition sealing body 582b, a partition sealing body 582c, and a partition sealing body 582d extending in the front-rear direction and connected to three of the surrounding sealing bodies 582a. The surrounding sealing body 582a and the partition sealing bodies 582b, 582c, and 582d are in close contact with the inner surface of the upper case 520 and the upper surface of the heater structure 580 to be sealed, and between the inner surface of the upper case 520 and the heater structure 580 A flow path (upper flow path) is formed.

The upper sealing body 582 includes a connecting sealing body 582e which connects the left and right division sealing bodies 582b and the division sealing body 582d on the front structure body 530 side, and is connected to the central division sealing body 582c. The connection sealing body 582e has a surface on the side of the heater structure 580 lower than the other parts of the upper sealing body 582, and forms a flow path between the connection sealing body 582e and the heater structure 580. As shown in FIG.

The lower sealing body 581 has a surrounding sealing body 581a, a partition sealing body 581b, a partition sealing body 581c, and a partition sealing body 581d extending in the front-rear direction and connected to three of the surrounding sealing bodies 581a. The surrounding sealing body 581a and the partition sealing bodies 581b, 581c, and 581d are in close contact with the inner surface of the lower case 510 and the upper surface of the heater structure 580 to be sealed, and a flow is formed between the inner surface of the lower case 510 and the heater structure 580. path (lower flow path).

The lower seal body 581 includes, on the front structure 530 side: a right connecting seal body 581e connecting the surrounding seal body 581a on the right side and a central partition seal body 581c; and a left connecting seal body 581f connecting the surrounding seal body 581a on the left side with the center partition seal body 581f The partition sealing body 581c. The right connecting seal body 581e and the left connecting seal body 581f have their surfaces on the side of the heater structure 580 lower than the other parts of the lower seal body 581 . Thereby, flow paths (upper flow paths) are formed between the right connection sealing body 581e and the heater structure 580 and between the left connection sealing body 581f and the heater structure 580 .

The heater structure 580 includes a heater (not shown), and the heater is arranged slightly apart from the surrounding sealing body 582a of the upper sealing body 582 and the partition sealing bodies 581b, 581c, and 581d. In addition, the heater is arranged slightly apart from the surrounding sealing body 581a of the lower sealing body 581 and the partition sealing bodies 581b, 581c, and 581d. Thereby, the situation where the heater is locally overheated is prevented, and the situation where the durability is reduced is suppressed.

In the heater, the ratio of the power on the inlet 531 side to the power on the outlet 533 side is set so that the power on the inlet 531 side becomes higher. In the present embodiment, the ratio of the power on the inlet 531 side to the power on the outlet 533 side is set to 3:2.

The washing water supplied from the inlet 531 flows into the flow path between the partition sealing body 582b and the surrounding sealing body 581a on the right side of the upper space. The washing water flows toward the rear side while being heated by the heater structure 580, and flows from the through hole 584 into the flow path between the sealing body 581b and the surrounding sealing body 581a on the right side of the lower space. It flows toward the front side while being heated by the heater structure 580, and passes over the right connecting seal body 581e and flows into the flow path between the right side partition seal body 581b and the center partition seal body 581c.

The washing water flows toward the rear side while being heated by the heater structure 580, and flows from the through-hole 584 into the flow path between the partitioned sealing body 582b on the right side of the upper space and the partitioned and sealed body 582c in the center. The washing water flows toward the front side while being heated by the heater structure 580 , and passes over the connecting sealing body 582e and flows into the flow path between the central dividing sealing body 582c and the left dividing sealing body 582d. The washing water flows toward the rear side while being heated by the heater structure 580, and flows from the through hole 584 into the flow path between the central partitioned sealing body 581c and the left partitioned sealing body 581d of the lower space.

The washing water flows toward the front side while being heated by the heater structure 580, and passes over the left connecting sealing body 581f and flows into the flow path between the surrounding sealing body 581a and the left dividing sealing body 581d. The washing water flows toward the rear while being heated by the heater structure 580, and flows from the through hole 584 into the flow path between the surrounding sealing body 582a in the upper space and the partition sealing body 582d on the left side. The washing water flows forward while being heated by the heater structure 580 , and is supplied to the nozzle device 700 through a hose (not shown) from the outlet 533 .

The following method can be considered: the inlet 531 is formed on the side of the upper casing 520, the outlet 533 is formed on the side of the lower casing 510, and the washing water flows in the upper flow path and then flows into the lower flow path. . With this configuration, it is presumed that the amount of movement of the flow in the vertical direction can be reduced, and the resistance of the flow path can be reduced.

However, in this configuration, a piping space for the outlet 533 is required below the lower case 510, and the arrangement space becomes large. Moreover, the piping work of the outlet 533 is performed in the clearance gap between the lower case 510 and the base part 250, and workability|operativity deteriorates.

In this embodiment, the washing water alternates between the upper flow path (corresponding to, for example, "1", "2", "3", and "4" shown in Fig. 46 ) and the lower flow path (corresponding to For example, "1'", "2'", "3'", and "4'" shown in FIG. 46 flow through, and a plurality of flow paths are formed up and down, respectively.

In the present embodiment, four flow paths are formed up and down, respectively. Thereby, the inlet 531 and the outlet 533 can be formed on the side of the upper case 520 . Thereby, the space for piping to the inlet 531 and the outlet 533 can be formed only on the side of the upper casing 520, and the problem that the installation space becomes large can be solved.

In addition, although four flow paths are formed up and down, respectively, two flow paths may be used, or six or more flow paths may be formed. The inlet 531 and the outlet 533 can be formed on the upper casing 520 side by forming a plurality of upper and lower flow paths.

The inner surface of the upper casing 520 which constitutes the flow path may be formed in a concave-convex shape by forming the convex portion 524 . The convex part 524 is continuously formed in the shape of a mountain, and is formed so that the upstream side has a steep slope and the downstream side has a gentle slope.

The inner surface of the lower casing 510 which constitutes the flow path may be formed in a concave-convex shape by forming the convex portion 514 . The convex part 514 is continuously formed in a mountain shape, and is formed so that the upstream side has a steep slope and the downstream side has a gentle slope.

As shown in FIG. 50 , since the protrusions 514 and 524 have a shape that approaches the heater structure 580 on the upstream side, the washing water flowing in the flow path is detected upstream by the protrusions 514 and 524 toward the heater structure 580 . The heater structure 580 side is guided, and flows on a gentle slope on the downstream side over the tops of the convex portions 514 and 524 . When the tops of the convex portions 514 and 524 are passed over, the volume of the flow path becomes wider, so that the washing water becomes a turbulent flow and the temperature is uniformized. By narrowing and widening the flow path by the convex portions 514 and 524, the thermal conductivity can be improved and the temperature of the washing water can be made uniform.

By increasing the thermal conductivity of the heater structure 580 , the surface temperature of the heater structure 580 can be suppressed, and the adhesion of scale to the heater structure 580 can be suppressed.

The heater structure 580 is provided with a heater (not shown), and the heaters are provided slightly apart from the upper sealing body 582 and the lower sealing body 581, so that the overheating of the heater can be prevented, and the effect of scale on the heater structure 580 can be suppressed. attached.

When the air bubbles have penetrated into the heat exchanger 500 , the air bubbles stay on the downstream side of the convex portions 514 and 524 as shown in FIG. 49 .

In the present embodiment, since the convex portions 514 and 524 are formed with gentle slopes on the downstream side as shown in FIG. 50 , the air bubbles flow to the downstream side along the slopes of the convex portions 514 and 524, and heat exchange 500 discharges.

A nozzle device 700 is arranged on the left side of the heat exchanger 500 . The detailed configuration of the nozzle device 700 will be described later.

＜Water pump＞ On the right side of the nozzle device 700, a water pump 600, which is a variable part of the spouting water amount, is provided. In this embodiment, the water pump 600 uses a diaphragm pump.

Furthermore, a configuration in which the water pump 600 is not used may be employed.

As shown in FIGS. 51 to 55 , the water pump 600 includes a pump mechanism portion 610 and a motor portion 620, and is formed in a substantially cylindrical shape. The pump mechanism portion 610 is provided with an elastic member A630 so as to cover the entire circumference of the end portion side. The motor portion 620 is provided with the elastic member B640 so as to cover the entire circumference of the end portion side opposite to the elastic member A630. The elastic member A630 and the elastic member B640 are formed of an elastic material such as foamed resin.

The water pump 600 is attached to the concave portion 605a of the pump housing 605 in a state in which the elastic member A630 and the elastic member B640 are attached. The motor part 620 of the water pump 600 is fixed by the pump fixture 606 by engaging the claw part 606a with the fixing claw 605b of the pump housing 605 .

The water pump 600 is formed in a cylindrical shape, and a water supply cylinder 600b having a water supply port 600a and a discharge cylinder 600d having a discharge port 600c are formed to protrude perpendicularly from one end face with respect to the end face. The water pump 600 is installed in the horizontal direction with the end surface having the water supply tube 600b and the discharge tube 600d facing forward.

The pump cover 605 is fixed to a predetermined position of the base portion 250 via the elastic member C650.

The water pump 600 can absorb the vibration of a wide range of frequencies through the elastic member A630 , the elastic member B640 and the elastic member C650 , thereby effectively suppressing the transmission of the vibration to the body portion 200 .

The lead wire 607 of the water pump 600 can be restricted from moving by the fixing claw 606b and the locking claw 605c.

Since the water pump 600 is fixed to the base portion 250 by screwing, claw fitting, or the like, the water pump 600 can be removed regardless of the nozzle device 700, and maintenance workability can be improved. Moreover, it can suppress that the vibration of the water pump 600 is directly transmitted to the nozzle apparatus 700.

Furthermore, as shown in FIG. 55 , a drain port 608 is formed in the pump cover 605 . When the pump mechanism portion 610 of the water pump 600 is damaged and water leaks, the water can be drained from the drain port 608 . The water drained from the drain port 608 can be drained into the toilet bowl 110 through the inclined surface 240 from the base portion 250 .

In this embodiment, the detection part (not shown) which detects the water drained from the drain port 608 is provided. The detection part will detect the situation of water leakage in the pump mechanism part 610 and report the fault.

In the present embodiment, although the detection unit is configured to detect the water from the drain port 608 , it is not limited to this configuration, as long as it can detect the water leakage from the pump mechanism unit 610 . In addition, the detection portion may be configured to detect, for example, a situation where electricity is energized due to water leakage between a pair of terminals, and other well-known configurations may be used.

The water supply port 600a of the water pump 600 is connected to the outlet 533 of the heat exchanger 500 through a connection pipe made of soft resin.

Hereinafter, the structure of the water pump 600 will be described in detail with reference to FIGS. 56 and 57 .

Fig. 56 is an exploded perspective view showing the diaphragm pump for liquid of the present invention. Fig. 57 is a sectional view of the main part of the diaphragm pump.

The cover body 1 of the diaphragm pump has a thin cylindrical shape, and is attached to the front surface 3a side of the middle cover body 3 via a gasket 2 formed of an elastic member. The cover body 1 is formed with a through hole 1c in the center portion, and the through hole 1c can be inserted into the chimney-shaped discharge hole 37 of the middle cover body 3 . In addition, the lid body 1 is provided with a protruding suction hole 12 capable of inhaling liquid, and is provided with a lid suction chamber 38, the lid suction chamber 38 being a part of the suction passage 30 through which the liquid sucked into the lid back 1b flows, and the lid suction chamber 38 It communicates with the suction hole 12 .

The middle lid body 3 is formed in a cylindrical shape made of resin, and a discharge hole 37 is protruded from the center portion of the front surface 3a. The middle lid body 3 is formed with a groove portion (not shown) on the back surface for discharging the liquid from the discharge hole 37 to the outside, and the groove portion and the discharge hole 37 communicate with each other. In addition, in the middle cover body 3, a valve seat portion 34 is formed at the bottom of the groove portion. In the valve seat portion, a total of three are arranged at equal intervals of 120 degrees in the circumferential direction with the discharge holes 37 as the center. Moreover, the suction chamber 33 of the circular groove part is formed corresponding to the three valve seat parts 34 on the front surface 3a side of the middle cover body 3. As shown in FIG. The suction chamber 33 constitutes a part of the suction passage 30 through which the suctioned liquid flows.

The valve seat portion 34 has a short cylindrical shape, and a central portion of the front end wall portion 35 penetrates into the suction chamber 33 to form a mounting hole (not shown) to which the suction valve body 4 can be attached. A suction hole 32 is formed in the front end wall portion 35 of the valve seat portion 34 , and a suction hole 32 through which a liquid suction passage 30 can be sucked in the vicinity of the mounting hole is formed.

The discharge valve membrane 52 of the diaphragm assembly 5 is brought into contact with the valve seat portion 34 so as to be covered so as to be in close contact and separable. The front end wall portion 35 of the valve seat portion 34 is configured to open and close the suction hole 32 by contacting and separating the valve portion 4 a of the suction valve body 4 . In contrast to the case where three valve seat portions 34 are formed, two suction valve bodies 4 are provided, and one of the valve seat portions 34 is not covered by the suction valve body 4 .

In the diaphragm assembly 5, three bowl-shaped diaphragms 50 are equally arranged at intervals of 120 degrees in the circumferential direction, and are connected by a diaphragm 54 formed on the axis. A gasket edge portion 53 is formed on the outer peripheral edge portion of the diaphragm 54 , and a discharge valve membrane 52 is provided to protrude from the diaphragm 54 toward the outer peripheral side. The diaphragm 50 is provided with a drive unit 51 that reciprocates the diaphragm 50 .

The gasket edge portion 53 of the diaphragm assembly 5 is sandwiched between the middle cover 3 and the retainer member 6, and the retainer member 6 is provided with a hole through which the driving portion 51 of the diaphragm 50 can be inserted. (not shown). The drive part 51 inserted into the diaphragm 50 of the retainer member 6 is supported by the locking hole 71 of the rocking plate 7 . The rocking plate 7 is disposed in the bottomed cylindrical cylindrical case 13 , and the end of the cylindrical case 13 abuts against the retainer member 6 .

A small DC motor 11 is arranged outside the cylindrical case 13 , an output shaft 11 a of the motor 11 extends into the cylindrical case 13 , and an eccentric rotating body 9 is attached to the output shaft 11 a . The eccentric rotating body 9 has a shaft attachment hole 91 into which the output shaft 11a can be inserted, and an eccentric hole 92 arranged eccentrically from the shaft attachment hole 91, and the crankshaft 8 is inserted through the eccentric hole 92 in an inclined manner.

The diaphragm pump forms the pump chamber 25 on the inner surface side of the discharge valve film 52 and the outer surface side of the discharge valve film 52 by sandwiching the diaphragm assembly 5 between the middle cover body 3 and the retainer member 6 . A common discharge space 36 including a discharge hole 37 formed by the groove portion 39 and the diaphragm 54 is formed.

The cylindrical case 13 is fixed to the motor 11 with screws 14 . In addition, the cover body 1 , the gasket 2 , the middle cover body 3 , the diaphragm assembly 5 , and the retainer member 6 are sequentially laminated on the cylindrical case 13 and fixed to the cylindrical case 13 with long screws 15 to form a case. 10.

In the present disclosure, although three valve seat portions 34 and two suction valve bodies 4 are provided, for example, four valve seat portions 34 and three suction valve bodies 4 may be provided.

The operation of the diaphragm pump for liquid with the above-mentioned configuration will be described.

When the output shaft 11a of the motor 11 is rotated, the eccentric rotating body 9 attached to the output shaft 11a is rotated, and the rocking plate 7 is rocked by the crank shaft 8, thereby causing the driving part 51 of the diaphragm 50 to reciprocate. Through the reciprocating motion of the driving part 51 , the diaphragm 50 is repeatedly expanded and compressed. Thereby, the pump chamber 25 formed by the valve seat portion 34 of the middle cover body 3 and the diaphragm 50 is compressed and expanded.

When the pump chamber 25 expands, the pump chamber 25 becomes a negative pressure, and the valve portion 4a of the suction valve body 4 is separated from the suction valve seat portion 35a so as to be pulled apart. The suction hole 32 of the suction passage 30 formed in the front end wall portion 35 of the valve seat portion 34 is opened to the pump chamber 25 . Thereby, the liquid flows from the suction hole 12 through the suction passage 30 formed by the lid suction chamber 38 of the lid body 1 and the suction chamber 33 of the middle lid body 3 and into the pump chamber 25 .

In addition, when the pump chamber 25 becomes a negative pressure, the discharge valve membrane 52 of the diaphragm 50 is brought into close contact with the valve seat portion 34 . As a result, the outflow of the liquid to the common discharge space 36 or the reverse flow from the common discharge space 36 can be prevented. The space formed by 39.

When the pump chamber 25 is compressed, the valve portion 4a of the suction valve body 4 is pressed against the suction valve seat portion 35a. The suction hole 32 of the suction passage 30 formed in the front end wall portion 35 of the valve seat portion 34 is in a blocked state by the valve portion 4a. Thereby, the suction valve body 4 prevents the inflow and outflow of the liquid from the suction hole 32 . In addition, due to the compression of the pump chamber 25 , the discharge valve membrane 52 is enlarged in diameter and separated from the valve seat portion 34 , and the liquid in the pump chamber 25 is pressurized to the common discharge space 36 .

When the pump chamber 25 is compressed, the discharge valve membrane 52 expands in diameter in the direction of the common discharge space 36 , presses the liquid in the common discharge space 36 , and pushes the liquid out of the discharge hole 37 . In this way, the outer membrane surface of the discharge valve membrane 52 has the function of pumping the liquid.

When the pump chamber 25 at the position where the valve portion 4a is not arranged is compressed, the suction hole 32 is opened as it is. Therefore, when the pump chamber 25 is compressed, the liquid in the pump chamber 25 is pushed back from the pump chamber 25. The amount of liquid in the direction of the suction passage 30 is large. The liquid pushed back to the suction passage 30 is pressurized to the pump chamber 25 in which the valve portion 4a is arranged.

On the other hand, although the discharge valve film 52 has an enlarged diameter in the direction of the common discharge space 36, the pressure applied to the discharge valve film 52 is reduced, and the discharge amount to the common discharge space 36 is reduced. The water pressure of the washing water sprayed on the local part of the human body will become lower. That is, the partial ejection of the human body is temporarily interrupted, or the ejection of low water pressure is in a state.

The water pressure at the position where the valve portion 4a is arranged and the water pressure at the position where the valve portion 4a is not arranged fluctuates because the washing water force for ejecting a normal amount of water to a part of the human body is generated at the position where the valve portion 4a is arranged. , and the pulsation of washing water pressure is generated.

At the position where the valve portion 4a is arranged, the liquid pushed back from the suction passage 30 is pressurized to the pump chamber 25 where the valve portion 4a is arranged, and acts between the pump chambers 25 to generate the rotation direction of the actuator. The cleaning water pressure during compression of sequential diaphragms.

When comparing the performance of the diaphragm pump provided with the two valve parts 4a and the diaphragm pump provided with the three valve parts 4a, the performance of the present invention provided with the two valves was compared. The diaphragm pump of the structure of the part 4a can generate the washing water pressure which is about twice the maximum washing water pressure of the diaphragm pump of the structure of the three valve parts 4a.

The drying device 220 is arranged at the left position of the nozzle device 700 . The drying device 220 dries the water adhering to the part after washing by the generated warm air.

A deodorizing device 230 for deodorizing the odor in the toilet bowl 110 is disposed at the left position of the drying device 220 .

<Nozzle device> At the left position of the heat exchanger 500 , a nozzle device 700 , which is a main component of the cleaning portion, is provided in the center portion of the main body portion 200 .

FIG. 58 is a perspective view of the nozzle device 700 viewed from the right side, and FIG. 59 is a perspective view of the nozzle device 700 viewed from the left side. Furthermore, FIG. 58 shows a state in which the water pump 600 is attached to the nozzle device 700. As shown in FIG.

As shown in FIGS. 58 and 59 , the nozzle device 700 includes a support portion 710 , a drive portion 730 , a nozzle body 750 , and a flow path switching mechanism 780 .

The support part 710 is molded with a resin material such as POM (polyoxymethylene: generally polyacetal, acetal resin). The nozzle body 750 moves forward and backward along the support portion 710 . The drive unit 730 moves the nozzle body 750 in the forward and backward direction.

In this embodiment, the storage direction of the nozzle body 750 is regarded as the rear, the forward direction of the nozzle body 750 is regarded as the front, and the right side is regarded as the right and the left is regarded as the left from the rear to the front. The arrangement of each component of the nozzle device 700 will be described.

Hereinafter, each component of the nozzle device 700 will be described in detail.

60 is an exploded perspective view of the nozzle device in a state in which the cleaning nozzle has been removed, viewed from the front right. Fig. 61 is an exploded perspective view of the nozzle device viewed from the right front. Fig. 62 is a plan view of the nozzle device viewed from the right direction. Fig. 63 is a plan view of the nozzle device viewed from the rear. Fig. 64 is an exploded perspective view of the nozzle device viewed from the rear right.

The support portion 710 includes an inclined portion 711 , a circular arc portion 712 provided at a lower rear portion of the inclined portion 711 , a guide rack 713 provided at a position below the inclined portion 711 in parallel with the inclined portion 711 , and a guide rack 713 provided on the inclined portion 711 The substantially cylindrical holding portion 714 at the front end of the . The inclined portion 711 descends from the rear toward the front (low front and high back). The arc portion 712 has the bottom portion 715 substantially horizontal (including horizontal), and is connected to the guide rack 713 . The holding portion 714 is integrally formed in a substantially cylindrical shape at the front end of the supporting portion 710 , and supports the nozzle portion 760 in an embracing manner.

On the left side surface of the support portion 710 , a second inclined portion 716 is formed at a position below the inclined portion 711 so as to be parallel to the inclined portion 711 . The inclined portion 711 extends from the right side surface of the support portion 710 in a direction perpendicular to the side surface, and the second inclined portion 716 extends from the left side surface of the support portion 710 in a right angle direction relative to the side surface. The inclined portion 711 and the second inclined portion 716 are formed to protrude in the opposite direction to the support portion 710 . That is, the inclined portion 711 and the second inclined portion 716 are arranged at positions that support the support in a direction (left-right direction) perpendicular to an imaginary line (not shown) passing through the center in the longitudinal direction of the nozzle body 750 . The position of the side surface of the part 710 rotated in the left-right direction.

A guide space for guiding the flexible rack 731 and the first arm portion 764 of the nozzle body 750 is formed between the inclined portion 711 of the support portion 710 and the guide rack 713 . The guide space is open toward the right side of the support portion 710 .

The arc portion 712 is open toward the right side of the support portion 710 , and the drive portion 730 is disposed on the arc portion 712 . The drive unit 730 includes a motor 732 supported on a side surface opposite to the arcuate portion 712 ; a pinion gear 733 driven to rotate by the motor 732 ; and a flexible rack 731 by the pinion gear 733 On the other hand, it moves between the peripheral edge portion of the circular arc portion 712 and the guide space. The motor 732 is mounted on the left side of the support portion 710 .

Hereinafter, the configuration of the cleaning nozzle will be described.

65 is an exploded perspective view of the nozzle body 750 viewed from the front left, FIG. 66 is a perspective view of the nozzle body 750 viewed from the front left, and FIG. 67 is a sectional view of the main part of the nozzle device 700 .

The nozzle body 750 includes a nozzle portion 760 having a plurality of washing water flow paths, and a flow path switching mechanism 780 , and the flow path switching mechanism 780 switches the washing water flow path of the nozzle portion 760 . The nozzle part 760 includes a pipe part 761A and a nozzle cover 761B which covers from the central part of the pipe part 761A to the front part.

The flow path switching mechanism 780 includes a flow path regulating valve 781 that is provided behind the nozzle portion 760 and switches the flow path, and a flow path switching motor 782 that drives the flow path regulating valve 781 .

The rear part of the nozzle part 760 is provided with the holding part 761C which holds the outer periphery of the pipe part 761A. In the holding portion 761C, a first arm portion 764 is extended to the right from an upper position above the center of the pipe portion 761A and a lower position below the upper edge of the holding portion 761C. The first arm portion 764 is formed in a U-shape downward to hold the inclined portion 711 .

In the lower part of the holding part 761C, a second arm part 765 is extended downward from the lower part of the left position on the left side from the center of the pipe part 761A. The second arm portion 765 is extended toward the right side to hold the second inclined portion 716 .

On the first arm portion 764, a protruding portion 766 is formed on the sliding contact surface with the inclined portion 711, and on the second arm portion 765, a protruding portion 767 is formed on the sliding contact surface with the second inclined portion 716. The slidability of the nozzle body 750 is improved by reducing the frictional resistance with the sliding surface by the protrusions 766 and 767 .

The position where the protruding strip portion 766 of the first arm portion 764 is in sliding contact with the inclined portion 711 is set to an upper position higher than the center of the pipe portion 761A. The position where the protruding strip portion 767 of the second arm portion 765 is in sliding contact with the second inclined portion 716 is set to a left position on the left side of the center of the pipe portion 761A.

Thereby, the height of the nozzle part 760 in the support direction of the support part 710 can be made low, the height of the nozzle device 700 can be set low, and the support can be stably performed.

The nozzle portion 760 can be supported by the first arm portion 764 at an upper position above the center of the pipe portion 761A, and can be supported by the second arm portion 765 at a left position further left than the center of the pipe portion 761A. . Thereby, the nozzle part 760 can be supported by the support part 710 in a stable state, and when the nozzle part 760 is moved, the nozzle part 760 can be supported with good mobility.

The nozzle part 760 is moved by the flexible rack 731 of the driving part 730 . The side surface of the flexible rack 731 on which the pinion gear 733 is not formed is guided in the guide space between the inner peripheral edge portion of the circular arc portion 712 and the inclined portion 711 .

The front end of the flexible rack 731 is engaged with the engaging portion formed on the first arm portion 764, and in the standby state in which the nozzle portion 760 has been accommodated in the accommodated position, it becomes a nearly meshing portion that surrounds and engages with the pinion 733. Status of the week. The flexible rack 731 moves the nozzle part 760 to the cleaning position by the motor 732 of the driving part 730 .

The length of the flexible rack 731 is preferably set to be shorter than the entire circumference of the pinion gear 733 . When the nozzle portion 760 moves forward, the flexible rack 731 retains a sufficient amount of engagement that does not fall off, and slides from the arc portion 712 to the guide space between the peripheral portion of the arc portion 712 and the inclined portion 711 . When the nozzle portion 760 returns to the storage position, since the flexible rack 731 surrounds the pinion 733 along the arc portion 712 , the gear of the flexible rack 731 will not be disengaged from the pinion 733 .

When the driving part 730 is assembled, the right side of the nozzle device 700 is regarded as the upper surface in the accommodated state of the nozzle part 760, the flexible rack 731 and the pinion gear 733 are fitted in order from the upper surface side, and the support part is covered. 717 is inserted into the support portion 710 and screwed to fix it. The flexible rack 731 is formed of a resin part formed with a predetermined curvature. Since the flexible rack 731 has a curvature, it can be easily wound around the pinion gear 733 , and the assemblability can be facilitated, and the meshing with the pinion gear 733 can be surely performed.

The movable space of the flexible rack 731 can be covered by the support portion cover 717 . Therefore, even when the nozzle portion 760 is manually forcibly returned to the standby position from the protruded state, the flexible rack can be stably moved without disengaging the flexible rack 731 The state where the 731 is engaged with the pinion gear 733 directly induces the forward and backward driving of the nozzle portion 760 .

The flexible rack 731 is integrally formed by, for example, TPU (thermoplastic polyurethane) or TPE (thermoplastic elastomer) made of TPEE (polyester elastomer). The flexible rack 731 is formed in a slightly curved band shape as a whole. A tooth shape that meshes with the pinion 733 of the drive portion 730 may be formed on the curved inner peripheral surface of the flexible rack 731, and the curved outer peripheral surface may be formed as a flat surface. The curved outer peripheral surface of the flexible rack 731 is coated with a fluororesin such as PTFE (polytetrafluoroethylene resin). Thereby, the frictional resistance between the flexible rack 731 and the guide rack 713 can be reduced.

<Advance and retreat drive structure of the nozzle body> Next, the forward/backward movement of the nozzle portion 760 will be described.

The nozzle part 760 is moved to a predetermined position by the driving part 730 , and the first arm part 764 is moved to the position of the holding part 714 . The nozzle part 760 is stably supported and moved by the support formed by the inclined part 711 and the first arm part 764 and the support formed by the second inclined part 716 and the second arm part 765 .

Fig. 68 is a cross-sectional view of the holding portion.

The holding portion 714 is configured to form ridges 718 on the left, right and below the inner peripheral surface, and the ridges 718 support the nozzle cover 761B of the nozzle portion 760 so that the nozzle portion 760 maintains a predetermined angle and reaches a predetermined protrusion. Location.

When the time required for the nozzle portion 760 to protrude to a predetermined protruding position may impair usability, it is necessary to increase the drive speed of the flexible rack 731 so as not to impair usability.

In order to increase the driving speed of the flexible rack 731, it is conceivable to increase the size of the motor 732, but when the motor 732 is increased in size, an increase in cost and an increase in product height are assumed.

In the present embodiment, in order to increase the driving speed of the flexible rack 731 without increasing the size of the motor 732, the configuration is as follows: the diameter of the pinion gear 733 is made large, and the arc portion The inner peripheral edge portion of the 712 is continuous with the guide space of the inclined portion 711 and is located in the tangential direction of the outer periphery of the pinion gear 733 . In this way, the frictional resistance of the flexible rack 731 can be reduced, and the driving between the protruding position and the storage position of the nozzle portion 760 can be made into a structure that can slide smoothly.

In the present embodiment, it is possible to achieve a comfortable washing by rapidly protruding the nozzle portion 760 at an appropriate angle from the standby position to the human body washing position while having a compact configuration.

The nozzle body 750 includes a nozzle portion 760 having a plurality of washing water flow paths, and a flow path switching mechanism 780 , and the flow path switching mechanism 780 switches the washing water flow path of the nozzle portion 760 . The nozzle part 760 includes a pipe part 761A and a nozzle cover 761B which covers from the central part of the pipe part 761A to the front part.

<Configuration of the discharge part of the washing water> FIG. 69 is an external perspective view of the pipe part of the nozzle body, and FIG. 70 is a cross-sectional view of the main part of the pipe part.

69 and 70, the structure of the front-end|tip part of the nozzle part 760 is demonstrated in detail.

A first ejection port 762 and a second ejection port 763 are provided at the front end portion of the pipe portion 761A of the nozzle portion 760 as ejection ports for washing the human body. The first jetting port 762 is a jetting port for pudendal washing that jets wide-width washing water, and the second jetting port 763 is a jetting port for buttock washing.

The pipe part 761A of the nozzle part 760 is provided with a first flow path 773 , a second flow path 774 , and a third flow path (not shown), and the flow of the washing water to these flow paths can be controlled by the flow path switching mechanism 780 . to switch. The first flow path 773 is connected to the first discharge port 762 . The second flow path 774 and the third flow path are connected to the second ejection port 763, and the washing water ejected from the second ejection port 763 discharges the straight component from the second flow path 774 and the spiral component from the third flow path.

The front end portion of the pipe portion 761A includes a first cap 771 and a second cap 772 attached to an upper portion of the first cap 771 . The first cap 771 includes a flow channel that communicates with the first flow channel 773 and constitutes a part of the first flow channel 773 , a flow channel that communicates with the second flow channel 774 and constitutes a part of the second flow channel 774 , and a third channel. The flow path communicates and constitutes a part of the third flow path. Each flow path of the first cap 771 changes the washing water from the axial direction of the nozzle portion 760 to the direction of the human body. The second cap 772 includes a first ejection port 762 and a second ejection port 763, and the first cap 771 and the second cap 772 are formed of resin and integrally formed by ultrasonic welding.

When washing the buttocks, the washing water flowing in the second flow path 774 and the third flow path is ejected from the second ejection port 763 . By changing the ratio of the washing water flowing in the second flow path 774 and the third flow path, the washing water according to the user's preference can be sprayed. When spot-like washing is preferred, the ratio of the washing water in the second flow channel 774 (direct-injection flow channel) can be set high, and when wide-ranging and gentle washing is preferred, the By increasing the relative flow rate of the washing water in the third flow path (swirling flow path), a wide range of gentle washing water is sprayed while swirling.

The first jetting port 762 is a jetting port for jetting the washing water for the vagina, and is configured to be inclined forward with respect to the extending direction of the first flow path 773 of the nozzle portion 760 so that the washing water is jetted further forward. The first flow path 773 that communicates with the first ejection port 762 is located at the lowermost part of the nozzle portion 760, and the flow path of the second cap 772 is redirected toward the human body and ejected toward the human body. The first ejection port 762 is constituted by four ejection holes. A substantially triangular-shaped rectifying rib 768 is provided in the flow path of the second cap 772 .

In this embodiment, the four ejection holes of the first ejection port 762 are all 0.8 to 1.0 mm in diameter and about 3 mm in length, and are provided with an inclination of 103.5 degrees in the forward direction in order to eject more obliquely forward.

The washing water flowing into the flow path of the second cap 772 from the first flow path 773 becomes turbulent. The jet flow of the turbulent washing water is sprayed in multiple directions, and when it hits the human body, it becomes a dispersed jet flow, and it is impossible to perform good washing.

In this embodiment, the rectifying rib 768 is provided so that the washing water jetted from the four jetting holes can reach the body part straightly. The angle of the long side of the substantially triangular shape in the straightening rib 768 is preferably set to be substantially parallel to the inclination of the ejection hole. With such a configuration, the washing water sprayed from the four spray holes can hit the human body in bundles without being scattered, thereby realizing comfortable vaginal washing.

The second ejection port 763 is an ejection port for ejecting the washing water for buttocks, and is located behind the first ejection port 762 . The second flow path 774 and the third flow path are connected through the second flow path 774 and the third flow path of the first cap 771 in the second ejection port 763 .

In the merging portion 769 of the first cap 771, the washing water of the straight component in the second flow path 774 merges on the side closer to the second discharge port 763 than the washing water of the swirl component in the third flow path. The washing water of the swirl component in the third flow path flows in the tangential direction at a lower position than the second flow path 774 in the confluence portion 769 .

In the confluence portion 769 , the guide portion 770 is extended from the back side of the second discharge port 763 of the second cap 772 toward the inside of the confluence portion 769 , and the washing water is discharged through the guide portion 770 . The second ejection port 763 has a diameter of 1.0 to 1.1 mm and a length of about 4 mm. The guide portion 770 is a shape obtained by cutting a cylindrical shape obliquely, and the longer side of the cylindrical shape is located at the front end side of the nozzle portion 760, and the shorter side is located at the second flow path 774 and the third flow path 774. flow side.

The washing water of the straight jet flow from the second flow path 774 flowing in the axial direction enters the confluence portion 769 and is ejected toward the human body from the second ejection port 763 along the guide portion 770 . The washing water of the swirl component in the third flow path flows into the confluence portion 769 from below the position where the second flow path 774 flows, and washes the direct injection component in the confluence portion 769 and the second flow path 774 The water confluences and spews out.

Inside the nozzle portion 760 , the second flow path 774 and the third flow path for the buttocks are located above the first flow path 773 as the flow path for the female part.

In this configuration, when the direction of the flow path of the washing water flowing in the flow path for buttocks is turned toward the second ejection port 763 in the confluence portion 769, the rectification length in the human body direction is shortened. After the direction is changed, if the length of the second jetting port 763 is increased in order to rectify the washing water of the direct injection component of the second flow path 774, the washing water of the swirl component of the third flow path will be connected It is also rectified to be a direct injection type, and there is a concern that the feeling when it hits the human body will be reduced. On the other hand, if the length of the second discharge port 763 is short, there is a possibility that the washing water of the direct injection component of the second flow path 774 cannot be sufficiently rectified.

In this embodiment, the guide portion 770 is provided. By providing the guide portion 770, the direct injection component can hold the direct injection component, and the swirling component can be ejected while holding the swirling component. Therefore, the jet flow that the user prefers can be realized by the confluence of the direct injection component and the swirling component.

In addition, it is expected that the water jets are pulsated by the washing water in the form of dots. It is desirable that the wide and gentle wash water, dominated by swirling components, does not pulsate the jet.

Therefore, by providing the guide portion 770 in the confluence portion 769, only the direct injection component can be rectified, and the washing water can be sprayed while retaining the pulsation formed by the swirling component.

By having the above-mentioned configuration, it becomes possible to perform comfortable body washing.

In the present embodiment, pulsation is generated in the washing water by the water pump 600 , but other methods may be employed as long as the pulsation can be generated in the flow path before the second discharge port 763 . The configuration is effective as long as the generated pulsation is not attenuated by the provision of the guide portion 770, and is not limited to this embodiment.

As shown in FIG. 59 , on the left side of the nozzle portion 760, a water inlet 751 and a water outlet 752 connected to the flow path switching mechanism 780 are arranged, and a flow path connected to the water inlet 751 and the water outlet 752 to become water inlet and outlet is arranged. The two-line hose 753. The two-line hose 753 is configured by connecting the first piping 754 and the second piping 755 in parallel, and connecting the first piping 754 and the second piping 755 integrally.

The first piping 754 transmits the washing water sent through the heat exchanger 500 and the water pump 600 to the first connecting portion 756 through the passage in the second connecting portion 757 . The second piping 755 allows the washing water for cleaning switched from the first piping 754 to pass through the flow path switching mechanism 780 to flow.

The two-wire hose 753 is movable in a section where it is bent from the first connecting portion 756 to the second connecting portion 757 at the rear end of the nozzle body 750 . At the position of the second connecting portion 757 , the second piping 755 , which is a flow path for cleaning, is held and extended by the second connecting portion 757 to be connected to the cleaning port 758 provided in the holding portion 714 of the front end portion of the support portion 710 . .

In the two-line hose 753 , a concave portion is formed between the first piping 754 and the second piping 755 . In the concave portion, the lead wire 759 of the motor that drives the flow-path regulating valve 781 is a flat wire, and is arranged from the first connection portion 756 to the second connection portion 757 . The lead wire 759 moves integrally with the two-wire hose 753 in conjunction with the movement of the nozzle body 750 .

The two-wire hose 753 and the flat wire-shaped lead wire 759 are fixed in the vicinity of the center of the first connection portion 756 and the second connection portion 757 by a locking clamp 759A. Since the two-wire hose 753 and the lead wire 759 are respectively moved by different amounts between the forward position and the standby position of the nozzle body 750, they are not fixed over the entire length. By making local fixation, since each can bend with a natural curvature without applying stress, it is possible to stably drive the nozzle body 750 . In addition, workability at the time of maintenance is also improved. In this embodiment, the locking jig is used as a local fixing method, but it is not limited to this.

Next, the cleaning function of the nozzle body 750 will be described.

FIG. 71 is an external perspective view of the holding part, and FIG. 72 is a cross-sectional view of the main part of the holding part.

A holding part 714 for holding the front end of the nozzle part 760 is provided on the front end side of the support part 710 . The nozzle shutter 728 is held on the left and right sides of the upper end at a position in front of the holding portion 714, and is provided so as to be freely openable and closable. The nozzle shutter 728 covers the front end of the nozzle cover 761B and the overflow water drain port 719 for draining the toilet when the internal water pressure rises, thereby preventing it from being contaminated with feces or the like. A cleaning port 758 for nozzle cleaning and the holding portion 714 are integrally formed at the front end portion of the holding portion 714, and a second piping 755 for cleaning is connected.

An overflow water port 721 is provided at the right front position of the support portion 710, and is connected to a nozzle pressure relief valve (not shown) that operates when the internal water pressure rises through a hose.

The overflow water port 721 and the overflow water drain port 719 are integrally formed in a substantially L-shape in the holding portion 714, and the overflow water is drained from the overflow water port 721 through the overflow water drain port 719 into the toilet.

The nozzle relief valve is configured to suppress breakage of the flow path by overflowing the washing water in the drainage direction when a predetermined pressure or more has been applied to the inside of the nozzle portion 760 . The nozzle pressure relief valve discharges overflow water from the periphery of the nozzle portion 760 toward the toilet in the same manner as when the functions such as nozzle cleaning and nozzle sterilization are activated, thereby preventing misidentification of water leakage due to malfunction.

In the present embodiment, the nozzle cover 761B and the front end portion of the nozzle portion 760 in the standby state are configured to be washed.

As shown in FIG. 70 , a cleaning hole 722 is provided on the upper surface of the holding portion 714 . The cleaning hole 722 is arranged between the first jetting port 762 for the vagina and the second jetting port 763 for the buttocks, and is provided so that the washing water from the cleaning hole 722 does not face the first jetting port 762 and the second jetting port 763 The ejection port 763 avoids the position where it is directly ejected.

Thereby, the occurrence of abnormal noise caused by the collision of the washing water from the cleaning hole 722 against the first jetting port 762 and the second jetting port 763 can be suppressed.

It is not limited to the present embodiment, and the first discharge port 762 may be used as long as it does not directly discharge the washing water from the cleaning hole 722 toward the first discharge port 762 and the second discharge port 763 . The positional relationship with the second ejection port 763 is different from this. The ejection port may be single, or three or more may be provided.

As shown in FIGS. 68 and 72 , in the inside of the holding portion 714 of the support portion 710 , a plurality of protruding lines 718 are formed toward the inner peripheral direction. The protruding strips 718 form a gap 723 between the inner peripheral surface of the holding portion 714 of the support portion 710 and the outer peripheral surface of the nozzle cover 761B of the nozzle body 750 .

In the accommodated state of the nozzle part 760 , the washing water sprayed from the nozzle part 760 flows into the gap 723 formed between the inner peripheral surface of the holding part 714 and the outer peripheral surface of the nozzle cover 761B of the nozzle part 760 . Thereby, the washing water washes the outer peripheral surface of the nozzle cover 761B of the nozzle portion 760 and is discharged into the toilet.

FIG. 73 is a cross-sectional view of the holding portion 714 . As shown in FIGS. 68 and 73 , a folded portion 724 is provided at the front end portion of the holding portion 714 so as to extend along the outer periphery of the nozzle cover 761B between the ridges 718 .

Thereby, in the cleaning of the nozzle cover 761B, the inflow of the washing water from the rear of the holding portion 714 into the inside of the machine can be suppressed, and the peripheries of the first ejection port 762 and the second ejection port 763 can be cleaned in a focused manner. Wash clean.

The protruding height of the ridges 718 protruding from the inner peripheral surface of the holding portion 714 is set higher than the height of the turn-back portion 724 , and the ridges 718 abut against the nozzle cover 761B, so that the nozzle portion 760 slides.

The ridges 718 are formed to cover the entire moving length of the nozzle portion 760. When the nozzle portion 760 advances and retreats along the ridges 718, even if a drop is formed at the junction of the nozzle cover 761B and the nozzle portion 760, the nozzle The movement of the portion 760 can also be smoothly slid without jamming.

<Control> The sanitary washing apparatus 100 of the present embodiment includes a control device.

The control device controls: the water supply unit 400 for supplying water, the heater structure 580 for the heat exchanger 500, the flow sensor 570 for measuring the amount of water supplied, the flow path switching mechanism 780 for switching the water path, and the control of the inlet and outlet of the cleaning nozzle. motor 732.

<Flow path switching mechanism control> The control device switches the water channel by the channel switching mechanism 780 and changes the flow rate.

When the wash button of the sleeve operation part 210 is operated, the control device opens the water stop solenoid valve 403 to supply wash water. It is necessary to shorten the time until the washing water is sprayed on the human body after the washing button is operated, and to supply the washing water of an appropriate supply amount to the heat exchanger 500 from the water stop solenoid valve 403 .

It is necessary for the heat exchanger 500 to set the temperature of the hot water immediately after it is sprayed onto the human body to an optimum temperature. The heat exchanger 500 heats the supplied washing water at the same time when the washing button is operated in order to set the temperature of the hot water to an optimum temperature immediately after the washing water is sprayed on the human body.

More specifically, when the user operates the wash button, the control device switches the flow path switching mechanism 780 to the second flow path 774 , which is a water path for the buttocks, and drives the water stop solenoid valve 403 . The flow of the washing water is detected by the flow sensor 550, and the power supply to the heater structure 580 of the heat exchanger 500 is started.

In the present embodiment, the washing water is supplied to the second flow path 774 for a period of 2.4 seconds. After that, the flow path switching mechanism 780 is switched to the second piping 755 which is the clean water path, and after the switching, the motor 732 is driven to move the nozzle body 750 forward. When the nozzle body 750 is moved, the washing water is sprayed from the cleaning hole 722 of the second flow path 774 to wash the nozzle body 750 . The wash water that has washed the nozzle body 750 can be drained toward the toilet through the drain path without spraying the wash water from the nozzle body 750 toward the human body.

When the nozzle body 750 is moved to a predetermined position, the flow path switching mechanism 780 is switched from the second piping 755 to the second flow path 774 for buttocks. The human body can be washed with the washing water from the second flow path 774 .

The minimum flow rate of the second flow path 774 which is the buttock water path is controlled so as to be almost equal to the flow rate of the second pipe 755 which is the clean water path. Thereby, it becomes possible to perform stable control, and it becomes possible to suppress the temperature fluctuation immediately after the washing water is sprayed on the human body.

In this embodiment, since the flow rate is changed by switching the second piping 755, which is the clean water path, and the second flow path 774, which is the buttock water path, by the flow path switching mechanism 780, it takes time to change. The flow path switching mechanism 780 is configured to set the flow rate of the washing water to the second flow path 774, which is the buttock water path, at a low level immediately after it is sprayed onto the human body, and to set a predetermined flow rate after the start of spraying to the human body. The flow up to now gradually increased. Thereby, washing water of various washing strengths can be supplied, and washing without discomfort to the user can be realized.

Conversely, if the flow rate is high at the beginning of spraying on the human body, and the flow rate gradually decreases from the spraying on the human body, it will be unexpected for users who prefer weak cleaning strength. Therefore, it is not used in this embodiment.

When the washing button is operated during washing, the driving of the water stop solenoid valve 403 is stopped to stop the supply of washing water. The flow path switching mechanism 780 is switched to the second piping 755 that is the clean water path, and the nozzle body 750 is accommodated. After the nozzle body 750 is accommodated, the flow path switching mechanism 780 switches to the second flow path 774 that is the buttocks water path, and drives the water stop solenoid valve 403 for a predetermined time to wash the front end of the nozzle body 750 . After the cleaning of the nozzle body 750 is completed, the water stop solenoid valve 403 is stopped, and the flow path switching mechanism 780 is switched to the stop position.

The pussy wash will perform the same control as the butt wash, so the explanation is omitted.

<Heat exchanger control> Next, the control of the heater structure 580 of the heat exchanger 500 will be described.

As described above, the water circuit of the present embodiment is configured to change the flow rate by switching the water path by the flow path switching mechanism 780, so it takes time to change the flow rate, so the configuration is as follows: The flow rate will be lower at the time of spraying, and the flow rate will gradually increase from the time when it is sprayed to the human body to the predetermined flow rate.

Therefore, the flow rate when first sprayed on the human body will vary greatly. The control of the heater structure 580 at this time is very important in order not to give the user an uncomfortable feeling.

In the present embodiment, the flow rate is changed by using a stepping motor for the flow path switching mechanism 780 and moving the stepping motor to a predetermined position. Therefore, the flow rate of the washing water is not changed instantaneously to the target flow rate, but is changed in stages by the operation of the stepping motor.

When the flow rate of the washing water is different from the rate of change of the energization amount of the heater structure 580 of the heat exchanger 500, there are cases where high-temperature hot water is discharged or low-temperature hot water is discharged.

In the present embodiment, the flow rate of the washing water is measured by the flow rate sensor 570 , and the amount of energization to the heater structure 580 is controlled according to the flow rate measured by the flow rate sensor 570 .

When controlling the energization amount of the heater structure 580 in accordance with the flow rate measured by the flow rate sensor 570, there may be the following concerns: the delay in heat transfer from the heater structure 580 to the heat exchanger 500 or the flow rate sensor 570's detection delay affects the hot water discharge temperature.

In order to solve this problem, in the present embodiment, the amount of energization of the heater structure 580 is changed in advance by predicting the change in the flow rate of the washing water. The amount of energization to the basic heater structure 580 can be expressed by (Equation 1) shown below.

[Expression 1] W=(T _heater -T _in )×Q×k W : heater input amount T _heater : target temperature T _in : water channel water temperature Q : flow rate of washing water K : calculation coefficient

In (Equation 1), although Q is the flow rate detected by the flow rate sensor 570, when the flow rate changes, the change in the energization amount to the heater structure 580 is delayed. In order to suppress this situation, the predicted flow rate Q' is used instead of the flow rate Q as shown in the following (Equation 2).

[Equation 2] W=(T _heater -T _in )×Q'×k Q': Predicted flow rate

The predicted flow rate Q' is a flow rate obtained by adding a predetermined flow rate to the flow rate of the wash water detected by the flow rate sensor 570, and is predicted to be ahead of the time when the flow rate sensor 570 measures by a predetermined time. The flow of flow that flows in time.

As an example, the behavior of the predicted flow rate when the washing strength of the washing water is changed is shown in FIG. 74 . The shift time T _heater is a value determined by the heat exchange performance of the heat exchanger 500 , particularly the responsiveness.

In Fig. 74, "flow rate" is Q in (Equation 1), and "forecast flow rate" is Q' in (Equation 2). The predicted flow rate Q' is to increase the amount of energization to the heater structure 580 so as to advance the amount of time T _heater .

In this way, the amount of energization to the heater structure 580 is changed in advance of the change in the flow rate of the washing water. Thereby, it becomes possible to suppress the delay of changing the amount of electricity supplied to the heater structure 580 and suppress the fluctuation of the hot water discharge temperature when the flow rate of the washing water is changed.

Actually, (Equation 2) is used only when the flow rate of the wash water is changed.

The flow rate of the washing water is continuously and slowly changed continuously due to the water pressure and temperature of the water in the channel, and does not take a certain value.

Therefore, it is difficult to predict the change in the flow rate of the washing water frequently. Basically, the flow rate measured by the flow rate sensor 570 is used.

The flow-path switching mechanism 780 is configured to linearly change the flow rate of the washing water in the areas where the buttocks washing and the pubic washing are used. Accordingly, when the flow rate of the washing water is changed, the speed of the flow rate change is always constant.

As shown in FIG. 75 , when the flow rate is changed by the flow path switching mechanism 780, first, in (Equation 2), the flow rate Q measured by the current flow rate sensor 570 is substituted into the predicted flow rate Q′, and then the predicted flow rate is changed to Q' increases (or decreases) at a certain rate of change. When the predicted flow rate Q' reaches the flow rate at the previous use, the change of the flow rate is terminated and set to a constant value.

With this control, the hot water discharge temperature can be stabilized when the flow rate of the washing water is changed. In the structure of the flow path switching mechanism 780, although the flow rate of the washing water also changes when the washing starts, even if it does change, the amount of electricity supplied to the heater structure 580 can be advanced in the same way. change, and reduce the fluctuation of the temperature of the wash water.

The flow rate of the wash water varies depending on the influence of hysteresis (hysteresis), and the timing of the flow rate change may vary. The hysteresis is the amount of backlash that occurs when the stepping motor of the flow path switching mechanism 780 reverses the driving direction and is about to reduce the clearance of the reduction gear gap. Therefore, when the flow channel switching mechanism 780 is driven in a different direction from the previous time, a delay due to hysteresis occurs, but when it is rotated in the same direction as the previous time, no delay occurs.

The flow path switching mechanism 780 does not change the flow rate of the washing water while the stepping motor is being driven by the hysteresis amount. Therefore, in the control of the energization amount of the heater structure 580, it becomes necessary to take the influence of hysteresis into consideration.

As shown in FIG. 76 , in order to match the timing of the change in the flow rate of the washing water, when the flow path switching mechanism 780 is rotated in the same direction as in the previous drive (hereinafter referred to as “forward rotation”), set the The drive standby time T _stpm . The drive standby time T _stpm is the standby time based on the case where the hysteresis becomes the largest when the rotation is in a different direction from the previous rotation (hereinafter referred to as "reverse direction"). Furthermore, the drive standby time T _stpm is a predetermined value.

When the flow path switching mechanism 780 is reversed, the drive standby time T _stpm(diff) is set by reducing the standby time according to the amount of hysteresis compared with the case of the largest hysteresis.

Thereby, the flow rate of the washing water can be changed at the same timing even in the case of reversing the flow path switching mechanism 780 as in the case of rotating the flow path switching mechanism 780 in the forward direction.

The standby time when the flow path switching mechanism 780 is reversed is represented by (Equation 3) shown below.

[Equation 3] T _stpm(diff) =T _stpm -(H _ys ×T _step ) T _stpm(diff) : Drive standby time (when the direction is reversed) T _stpm : Drive standby time _Hys : Hysteresis amount T _step : Make Time required for stepping motor to perform stepping action (fixed value)

In (Equation 3), the hysteresis amount H _ys of the flow path switching mechanism 780 takes different values one by one according to the component deviation of the stepping motor. By setting the value of the hysteresis amount _Hys in accordance with each body, it becomes possible to absorb the deviation of the parts of the stepping motor, and to always perform flow control at the same timing.

Furthermore, in order to stabilize the hot water discharge temperature of the washing water, when changing the flow rate of the washing water by the flow path switching mechanism 780, it is necessary to change the amount of energization to the heater structure 580 in advance. In other words, it is necessary to delay the operation of the flow path switching mechanism 780 relative to the operation of the energization amount of the heater structure 580 . In this control, the drive standby time T _stpm of the flow switching mechanism 780 not only makes the operation timing of the flow switching mechanism 780 coincide, but also contributes to the generation of time for the advance control of the amount of energization to the heater structure 580 .

<Control by learning function> In the water circuit of the present embodiment, the flow rate of the washing water is changed according to the position of the stepping motor of the flow path switching mechanism 780 . Therefore, the accuracy of the position of the stepping motor of the flow path switching mechanism 780 becomes important.

The flow rate of the washing water is measured using the flow sensor 570, and when the measured flow rate deviates from the target flow rate, the position of the flow switching mechanism 780 is corrected so that the flow rate of the washing water is close to the target flow rate. In addition, during washing, this control is always performed so that the flow rate of the washing water is aligned with the target flow rate.

In order to correct the flow rate, it takes time, even if it is only a small amount, after the flow path switching mechanism 780 is activated until the flow rate can be fed back by the flow rate sensor 570 . Therefore, when correcting the position of the flow-path switching mechanism 780 , the step of the stepping motor is increased, and the operation is intermittently performed little by little.

When the flow rate measured by the flow rate sensor 570 deviates from the target flow rate by a predetermined amount or more, the count for intermittent operation is incremented one by one. When the value of the counter exceeds a certain value, the flow-path switching mechanism 780 is operated in a direction to bring the flow rate of the washing water close to the target flow rate. By repeating this procedure, the flow rate of the wash water is brought close to the target flow rate.

When the amount of deviation between the flow rate of the wash water and the target flow rate decreases and falls below the threshold, the counter is reset to 0 (zero). The purpose of this processing is not to actuate the flow path switching mechanism 780 until the flow rate of the washing water and the target flow rate are completely matched, but to have a certain amount of difference. This makes it possible to prevent the flow rate from being constantly and continuously adjusted when the position of the flow path switching mechanism 780 is not determined, even when fine flow rate adjustment is difficult due to variations in components.

The above-described position control of the flow path switching mechanism 780 is performed during cleaning, and it is conceivable that the flow rate of the washing water immediately after the start of the cleaning does not match the target flow rate. One of the reasons for this is the variation in the hysteresis of the channel switching mechanism 780 . That is, when the apparatus is used for the first time or the like, the hysteresis of the flow path switching mechanism 780 may deviate, and the flow rate of the washing water may not match the target flow rate.

Therefore, in the water circuit of the present embodiment, the hysteresis of the flow path switching mechanism 780 is memorized before shipment of the device. The hysteresis of the flow-path switching mechanism 780 has a variation in mass production, so the flow-path switching mechanism 780 is operated while the flow rate is measured by passing water before shipment. Thereby, the hysteresis is measured and memorized.

In the flow path switching mechanism 780, when the position of the stepping motor is changed, there is a region where the flow rate changes. The amount of hysteresis can be measured by reversing the stepping motor in this area.

In a state where the washing water is flowing, the flow-path switching mechanism 780 is driven in one direction and stopped, and thereafter, the flow-path switching mechanism 780 is driven in the opposite direction by a certain amount each time. When it rotates in the opposite direction, there is no change in the flow rate due to the hysteresis caused by the backlash of the gear, etc., but when the reverse rotation amount exceeds the hysteresis amount, the flow rate changes. By detecting this flow change with the flow sensor 570, it becomes possible to measure the amount of hysteresis. industrial availability

Since the sanitary washing device of the present disclosure can improve the workability of attaching various functional parts to the base, it can also be applied to a sanitary washing device that does not have a toilet cover.

1: cover 1b: Back of cover 1c: Through hole 2: padding 3: middle cover 3a: front 4: Suction valve body 4a: valve section 5: Diaphragm assembly 6: Retainer components 7: Shake the board 8: Crankshaft 9: Eccentric rotating body 10: Cover 11: Motor 11a: Output shaft 12: Suction hole 13: Cylinder box 14: Screws 15: long screw 25: Pump room 30: Inhalation path 32: Suction hole 33: Inhalation Chamber 34: Valve seat 35: Front end wall 35a: Suction valve seat 36: Common spit space 37: Spit hole 38: Cover suction chamber 39: groove part 50: Diaphragm 51: Drive Department 52: Spit out valve membrane 53: Pad edge 54: Diaphragm 71: Locking hole 91: Shaft mounting hole 92: Eccentric hole 100: Sanitary washing device 110: toilet 200: body part 210: Sleeve Operation Department 211: Installation Department 212: Lower cover 213: Upper cover 214: Operation board part 215: Operation nameplate 216: Operation substrate 217: Operation board cover 218: Lead 219: Empty Department 220: Drying device 221: Installation Department 222, 223: Groove 224: Extension setting part 225: Zhou Wall 230: Deodorization device 240: Inclined surface 241: Damping mechanism 242: Damper for toilet seat 243: Damper for toilet cover 244: Damper installation part 245,605c: Locking claw 246: Prevent falling off boss 250: Base part 251: convex part 252: Groove 253: Ribs 254: Installation Department 255: Locking piece 256: Engagement claw 270: rear cover 270a: Front face 271: Groove 272: Seating Detection Department 273: Through hole 274: Filter 275: Stopper 276: Toilet seat support 290: Front cover 290a: Clamping part 291, 292: convex part 300: toilet seat 301: Toilet seat shaft 320: toilet cover 321: toilet cover rotation axis 400, 400A, 400B, 400C: Water Supply Unit 401A, 401B, 401C: Strainer 402A: Constant flow valve 402B, 402C: Pressure reducing valve 403, 403A, 403B, 403C: Water stop solenoid valve 404A, 404B, 404C: Vacuum circuit breakers 405A, 405B, 405C: Open Waterways 406A, 406B, 406C: Vacuum adaptors 407A, 407B, 407C: Vacuum cover 408A, 408B, 408C: Vacuum circuit breaker valve 409A, 409B, 409C: Inlet 410, 410A, 411A, 410B, 411B, 410C, 411C: Outlet 412A, 412B, 412C: Suction port 413C: Fixed orifice 500: Heat Exchanger 510: Lower cover 514,524: convex part 520: Upper cover 521: Installation part of temperature detection part 522: thermal fuse 523: Wiring 530: Front Construct 531: Entrance 532: Inlet barrel 533: Exit 534: Outlet barrel 540: Temperature detection part cover 560: Hot water discharge block 565: Terminal Board 570: Flow sensor 571: Flow sensor cover 572: Flow sensor housing cover 573: Inlet water temperature sensor 574: Inlet water temperature sensor fixture 575: Flow sensor shaft 576: Impeller 577: Inspection Department 578: Inflow 579: Outlet 580: Heater structure 581: Lower sealing body 581a, 582a: Surrounding seals 581b, 581c, 581d, 582b, 582c, 582d: Division seals 581e: Right link seal 581f: Left link seal 582: Upper seal 582e: Bonding Seal 583: Terminals 584: Through hole 600: water pump 600a: Water inlet 600b: Water Supply Cartridge 600c: Spit out 600d: Spit out cylinder 605: Pump Housing 605a: Recess 605b, 606b: Fixed jaws 606: Pump Fixture 606a: Claws 607: Lead 608: Drain 610: Pump Mechanism Department 620: Motor Department 630: Elastic member A 640: Elastic member B 650: Elastic member C 700: Nozzle device 710: Support Department 711: Slope 712: Arc part 713: Guide rack 714: Holding Department 715: Bottom edge 716: 2nd slope 717: Support cover 718: Rib 719: Overflow water outlet 721: Overflow nozzle 722: Cleaning Holes 723: Gap 724: Turn-back Department 728: Nozzle Gate 730: Drive Department 731: Flexible Rack 732: Motor 733: Pinion 750: Nozzle body 751: Inlet 752: Water outlet 753: Dual Line Hose 754: 1st piping 755: 2nd piping 756: 1st connection 757: 2nd connection 758: Clean mouth 759: Lead 759A: Locking Clamp 760: Nozzle part 761A: Pipe Fittings 761B: Nozzle Cover 761C: Retention Department 762: 1st outlet 763: 2nd outlet 764: 1st Arm 765: Arm 2 766, 767: Projection 768: Rectifying Rib 769: Confluence Department 770: Guidance Department 771: 1st Cap 772: 2nd Cap 773: 1st stream 774: 2nd stream 780: Flow switching mechanism 781: Flow control valve 782: Flow switching motor

FIG. 1 is an external perspective view of a sanitary washing apparatus in Embodiment 1. FIG. Fig. 2 is an external perspective view of the main part of the same sanitary washing device. Fig. 3 is a plan view of the same sanitary washing apparatus in a state in which the front cover and the rear cover have been removed from the main body. Fig. 4 is a perspective view of the same sanitary washing apparatus in a state in which the front cover has been removed from the main body. Fig. 5 is a perspective view of the sanitary washing apparatus in a state in which the rear cover has been removed from the main body. Fig. 6 is a perspective view of a base portion of the same sanitary washing device. Fig. 7 is a sectional view of the main part of the same sanitary washing device. Fig. 8 is a sectional view of the main part of the same sanitary washing device. Fig. 9 is a sectional view of the main part of the same sanitary washing device. Fig. 10 is a sectional view of the main part of the same sanitary washing device. Fig. 11 is a perspective view of the main parts of the same sanitary washing device. Fig. 12 is a perspective view showing the main part of the damping mechanism of the same sanitary washing device. Fig. 13 is a perspective view showing the main parts of the damping mechanism of the same sanitary washing device. Fig. 14 is a sectional view of the main part showing the damping mechanism of the same sanitary washing device. Fig. 15 is a perspective view showing the main parts of the seating detection part of the same sanitary washing device. Fig. 16 is a perspective view showing the main parts of the seating detection part of the same sanitary washing device. FIG. 17 is a perspective view showing the main parts of the seating detection unit of the same sanitary washing device. Fig. 18 is a perspective view showing the back surface of the main body of the same sanitary washing device. Fig. 19 is a sectional view of the main part of the same sanitary washing device. Fig. 20 is a perspective view of a main part of the toilet lid of the same sanitary washing device in an open state. Fig. 21 is a perspective view of a main part of the toilet lid of the same sanitary washing device in an open state. Fig. 22 is a perspective view of the main parts of the sanitary washing apparatus in a state in which the front cover has been removed. Fig. 23 is a cross-sectional view of the main part showing the circumference of the sleeve operation part of the same sanitary washing device. Fig. 24 is a perspective view of the sleeve operating portion of the sanitary washing device. Fig. 25 is an exploded perspective view of the sleeve operating portion of the sanitary washing device. Fig. 26 is a cross-sectional view of the sleeve operating portion of the sanitary washing device. Fig. 27 is a cross-sectional view around the heat exchanger of the same sanitary washing device. Fig. 28 is a perspective view of the water supply unit of the same sanitary washing apparatus. Fig. 29 is a cross-sectional view of the water supply unit of the same sanitary washing apparatus. 30 is a cross-sectional view of a vacuum breaker of the water supply unit of the sanitary washing apparatus. 31 is a cross-sectional view of a vacuum breaker of the water supply unit of the sanitary washing apparatus. Fig. 32 is a cross-sectional view of the water supply unit of the same sanitary washing apparatus. 33 is a cross-sectional view of a vacuum breaker of the water supply unit of the sanitary washing apparatus. 34 is a cross-sectional view of a vacuum breaker of the water supply unit of the sanitary washing apparatus. Fig. 35 is a cross-sectional view of the water supply unit of the same sanitary washing apparatus. 36 is a cross-sectional view of a vacuum breaker of the water supply unit of the sanitary washing apparatus. 37 is a cross-sectional view of a vacuum breaker of the water supply unit of the sanitary washing apparatus. Fig. 38 is a perspective view of the heat exchanger of the same sanitary washing apparatus. Fig. 39 is a perspective view of the heat exchanger in a state in which the hot water discharge block is removed from the sanitary washing apparatus. Fig. 40 is an exploded perspective view of the heat exchanger of the same sanitary washing apparatus. Fig. 41 is an exploded perspective view of the heat exchanger of the same sanitary washing apparatus. Fig. 42 is a perspective view of a flow sensor in the heat exchanger of the sanitary washing apparatus. Fig. 43 is a cross-sectional view of the flow sensor of the heat exchanger of the sanitary washing apparatus. Fig. 44 is a cross-sectional view of the flow sensor of the heat exchanger of the sanitary washing apparatus. Fig. 45 is an exploded perspective view of the heat exchanger of the same sanitary washing apparatus. Fig. 46 is an exploded perspective view of the heat exchanger of the same sanitary washing apparatus. Fig. 47 is a sectional view of the heat exchanger of the same sanitary washing apparatus. Fig. 48 is a sectional view of the main part of the heat exchanger of the same sanitary washing apparatus. Fig. 49 is a sectional view of the main part of the heat exchanger of the same sanitary washing apparatus. Fig. 50 is a sectional view of the main part of the heat exchanger of the same sanitary washing apparatus. Fig. 51 is a perspective view of a water pump of the same sanitary washing device. Fig. 52 is a perspective view of a water pump of the same sanitary washing apparatus. Fig. 53 is an exploded perspective view of the water pump of the same sanitary washing apparatus. Fig. 54 is a perspective view of a water pump of the same sanitary washing apparatus. Fig. 55 is a perspective view of a water pump of the same sanitary washing device. Fig. 56 is an exploded perspective view of the water pump of the same sanitary washing apparatus. Fig. 57 is a sectional view of the water pump of the same sanitary washing apparatus. Fig. 58 is a perspective view of the nozzle device of the same sanitary washing device viewed from the right side. Fig. 59 is a perspective view of the nozzle device of the same sanitary washing device viewed from the left. Fig. 60 is an exploded perspective view of the nozzle device in a state in which the cleaning nozzle of the sanitary cleaning device has been removed from the front right. Fig. 61 is an exploded perspective view of the nozzle device of the same sanitary washing device viewed from the front right. Fig. 62 is a plan view of the nozzle device of the same sanitary washing device viewed from the right direction. Fig. 63 is a plan view of the nozzle device of the same sanitary washing device viewed from the rear. Fig. 64 is an exploded perspective view of the nozzle device of the same sanitary washing device viewed from the rear right. Fig. 65 is an exploded perspective view of the cleaning nozzle of the same sanitary cleaning device viewed from the front left. Fig. 66 is a perspective view of the cleaning nozzle of the same sanitary cleaning device viewed from the front left. Fig. 67 is a sectional view of the main part of the nozzle device of the same sanitary washing device. Fig. 68 is a cross-sectional view of the holding portion of the same sanitary washing device. Fig. 69 is an external perspective view of the pipe part of the nozzle body of the same sanitary washing device. Fig. 70 is a sectional view of the main part of the pipe part of the same sanitary washing device. Fig. 71 is an external perspective view of the holding part of the same sanitary washing device. Fig. 72 is a sectional view of the main part of the holding part of the same sanitary washing device. Fig. 73 is a sectional view of the main part of the holding part of the same sanitary washing device. FIG. 74 is a graph showing the behavior of the predicted flow rate in the case of changing the washing strength by the washing water in the sanitary washing apparatus. FIG. 75 is a graph showing the behavior of the predicted flow rate in the case of changing the washing strength by the washing water in the sanitary washing apparatus. FIG. 76 is a time chart illustrating an operation for matching the timing of the change in the flow rate of washing water in the sanitary washing apparatus.

Claims (4)

A sanitary washing device for supplying washing water supplied from a supply source to a human body by water pressure from the supply source, the sanitary washing device comprising: Wash the nozzle, spit out the washing water to wash the human body; a washing water flow path, provided between the supply source and the washing nozzle, and allowing the washing water from the supply source to flow to the washing nozzle; a flow switching mechanism for supplying the washing water from the supply source to the washing water passage; a flow sensor for detecting the flow rate of the washing water in the washing water path; a heat exchanger provided on the upstream side of the washing nozzle and heating the washing water; and a control unit that controls the flow switching mechanism, the flow sensor and the heat exchanger, The control unit inputs the flow rate of the washing water in the washing water channel detected by the flow sensor, and predicts a change in the flow rate of the washing water to control the power supply to the heat exchanger. The sanitary washing device according to claim 1, wherein the control unit controls the flow rate of the washing water detected by the flow sensor plus a predetermined flow rate as the flow rate of the washing water, and controls Power supply to the aforementioned heat exchanger. The sanitary washing apparatus according to claim 1, wherein the control unit advances the time measured by the flow rate sensor by a predetermined time and predicts the flow rate to flow at the advanced time as the flow rate of the washing water. flow to control the power supply to the aforementioned heat exchanger. The sanitary washing device of claim 1, wherein the flow switching mechanism uses a stepping motor, The control unit adds the calculated flow rate to the flow rate of the wash water detected by the flow sensor according to the hysteresis of the stepper motor, as the flow rate of the wash water, and controls the flow rate of the heat. Power supply for the switch.

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