JP3424240B2 - Water discharge amount measuring device, water discharge amount adjusting device, and water discharge form switching device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water discharge amount measuring device for measuring a water discharge amount from a water discharge port of a faucet body, a water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a faucet body, and a faucet. The present invention relates to a water discharge form switching device that switches a water discharge form from a water discharge port of a main body.

[0002]

2. Description of the Related Art In a water discharge device that discharges water from a water discharge port of a faucet body such as a shower head or a curran, a flow rate adjustment for adjusting the amount of water discharged from the water discharge port is routinely made. Since flow rate measurement is indispensable for such flow rate adjustment, for example, in a water discharge device using a shower head, an impeller that rotates according to passage of hot water is provided in the hot water mixing flow path on the hot water mixing tap side. The amount of hot water (rotational speed) is measured to convert and calculate the hot water flow rate, that is, the water discharge amount from the shower head.

In recent years, in addition to simply discharging water from the faucet body, the amount of water discharged can be changed according to the purpose of water spouting from the faucet body, and the form of water discharge from the water spout can be diversified. Something with added value is proposed. For example, in a kitchen curran, the amount of water discharged is changed by removing oil stains from dishes and washing vegetables, and in a shower head in a bathroom, mixed hot and cold water flowing from a hot and cold water mixing tap is used. There are different types of water discharge.

Explaining in detail the diversification of water discharge modes in this shower head, the water discharge nozzles for realizing water discharge in different water discharge modes are switched. Therefore, when each of the water discharge nozzles is appropriately selected and switched, the water discharge form thereof includes a water discharge form determined by the shape of the water discharge hole in the water discharge nozzle, for example, a water discharge form (spray) in which water is sprayed, and bubbles are included in the foam. The water is discharged in the shape of a bubble (foam) or the water is discharged in the shape of a stick (cast).

[0005]

However, in the above-mentioned water discharge device, although the amount of water discharge can be adjusted and the water discharge form can be switched, the following problems have been pointed out.

First, since the amount of water discharged from the faucet body is converted from the momentum of the impeller in the flow path reaching the faucet body, there are the following specific problems. In the impeller,
Due to the rotation characteristics, for example, it takes time at the time of starting the rotation, and when the flow rate is decreasing, the decreasing tendency of the flow rate is not reflected in the rotation of the impeller due to the rotational inertia of the impeller. As a result, the responsiveness to changes in the flow rate is poor,
The flow rate in the flow path, that is, the amount of water discharged from the faucet body cannot be accurately measured.

Further, since the impeller is usually provided on the side of the hot and cold water mixing valve separated from the faucet body, the amount of movement of the impeller may be increased or decreased by, for example, raising or lowering the shower head or bending a hose connected to the shower head. The flow rate converted from and the water discharge amount actually discharged from the shower head may not match. Incorporating an impeller into a faucet body such as a shower head is practically limited due to restrictions on the use of the faucet body such as a shower head, for example, size and weight due to being handled by hand. difficult. Therefore, when the flow rate control or the like is performed using the flow rate obtained from the momentum of the impeller, sufficient control accuracy cannot be obtained.

Secondly, there are the following problems. The switching of the water discharge form is performed by replacing the water discharge nozzle in the faucet body or by a water discharge nozzle switching mechanism that switches the water discharge nozzle using a manual lever. Therefore, it is necessary to replace the water discharge nozzle and operate the lever each time the water discharge mode is changed, which is complicated. In particular, in a shower head which is often handled with one hand, it is necessary to perform these operations with both hands every time the nozzle is replaced or the lever is operated, and the operability is poor. Further, every time the nozzle is replaced or the lever is operated to switch the water discharge mode, the shower water discharge is temporarily interrupted and then the shower water discharge is restarted.

Moreover, even if the water discharge mode is switched in this way and the flow rate control in the changed water discharge mode is performed based on the flow rate converted from the momentum of the impeller, the amount of water discharge is adjusted to the above-mentioned momentum of the impeller. It was difficult to control the amount of water discharged according to the water discharge form because of the fact that it is based on this.

For example, when the spraying form of a spray having a relatively large amount of water discharge is switched to the discharging form of a spot having a relatively small amount of water discharge, the rotation of the impeller does not immediately respond to the decreasing change of the flow rate, so that the discharging form of the spot is changed. Despite switching, water is discharged in spots with a large amount of water discharge. As described above, when the spot-shaped water discharge is applied with a large amount of water discharge, the user feels uncomfortable.

Although it is conceivable to operate the water discharge nozzle switching mechanism by an electric drive source such as a motor, the drive source is secured in the faucet body and the drive force of the drive source is transmitted to the water discharge nozzle. For convenience, there are the following specific problems.

If the drive source is a small motor and is built in the faucet body together with the drive unit such as the water discharge nozzle, the drive unit and the drive source can be directly connected or can be connected using a very small transmission mechanism. Therefore, even when the user holds the shower head by hand and takes a shower, the operability is not relatively impaired. In other words, the drive source must use a small motor.

When the mixed hot water is switched to another water discharge mode while discharging the mixed hot water from the shower head having the water discharge nozzle and the small motor built therein, the mixed hot water exists in the shower head. It is necessary to drive the motor to switch the water discharge nozzle under the circumstances. In such a case, since the motor is small in size, it is necessary to control the flow rates of the hot water and the water in the pipes to zero in order to temporarily stop the flow of the mixed hot water into the shower head. . In order to avoid misfire of the water heater caused by the stop of hot water supply from the water heater, at least the flow rate of hot water from the water heater in the pipeline must be zero.
The flow rate control in this pipeline is performed by drivingly controlling a flow rate control valve or the like.

Then, at the same time when the switching of the water discharge nozzle by the motor is completed, that is, the switching of the water discharge mode is completed, it is necessary to control the return of the flow rate adjusting valve and the like in the pipeline to the original state. Therefore, it takes a long time to switch the discharge mode of the mixed hot and cold water in the shower head, and the responsiveness deteriorates. As a result, the user taking a shower is uncomfortable.

Further, minute dust contained in the fluid to be spouted or components in the fluid may adhere to the spout hole at the spout of the faucet body, or the spout hole may be deformed by the heat of the fluid itself. . For example, in a shower head that discharges mixed hot and cold water, scales adhere to the water discharge holes, and the water discharge nozzle made of resin expands and contracts due to the heat of the mixed hot water, causing the water discharge holes to deform over time. When such a situation is reached, even if the flow rate control based on the momentum of the impeller is continued, these situations are not reflected at all, so the amount of water discharged from the faucet body changes.

The present invention has been made to solve the above-mentioned problems, and adjusts the water discharge amount based on the accurate water discharge amount from the water discharge port of the faucet body and adjusts the water discharge amount in consideration of the change over time of the water discharge hole. At the same time, an object of the present invention is to promptly switch the water discharge mode and eliminate discomfort in the water discharge mode after the switching.

[0017]

The procedure and means adopted by the present invention to achieve the above object are as follows. The water discharge amount measuring device according to claim 1, which is a water discharge amount measuring device for measuring a water discharge amount from a water discharge port of a water faucet body, and which passes through a fluid flow path including an internal flow path formed in the water faucet body. Then, the inflow pressure of the fluid reaching the water outlet is detected in the internal flow path, and the amount of water discharged from the water outlet of the faucet body is calculated based on the detected inflow pressure. The gist of the invention is to include a water discharge amount calculation means.

A water discharge amount measuring device according to a second aspect is a water discharge amount measuring device for measuring a water discharge amount from a water discharge port of a water faucet body, the flow rate coefficient including an internal flow passage formed in the water faucet body. Flow path switching means for selectively connecting and switching a plurality of different fluid flow paths to the water outlet of the faucet body, and a selected fluid flow path selected by the flow path switching means and connected to the water outlet The inflow pressure of the fluid passing through the water discharge port to the water discharge port , based on the detected inflow pressure and the flow coefficient, the amount of water discharged from the water discharge port based on the detected inflow pressure and the flow coefficient. wherein as its gist in that it comprises a water discharge amount calculating means for calculating for each object to be selected 択流fluid flow path.

The water discharge amount adjusting device according to claim 4 is a water discharge amount adjusting device for adjusting the water discharge amount from the water discharge port of the water faucet body, and the flow rate for adjusting the water discharge amount from the water discharge port of the water faucet body. An adjusting means; an inflow pressure detecting means for detecting an inflow pressure of a fluid that passes through a fluid flow path including an internal flow path formed in the faucet body and reaches the water discharge port in the internal flow path; The gist is to include a flow rate control means for controlling the flow rate adjusting means based on the detected inflow pressure and a predetermined target water discharge amount.

The water discharge amount adjusting device according to claim 5 is a water discharge amount adjusting device for adjusting the water discharge amount from the water discharge port of the water faucet body, and the flow rate for adjusting the water discharge amount from the water discharge port of the water faucet body. Adjusting means, and a plurality of fluid flow paths having different flow coefficients including an internal flow path formed in the faucet body, and a flow path switching means for selectively connecting and switching to a water outlet of the faucet body,
Inflow pressure detection means for detecting, in the internal flow path, the inflow pressure of the fluid that has passed through the selected fluid flow path selected by the flow path switching means and connected to the water discharge port and reaches the water discharge port,
The gist is to provide a flow rate control means for controlling the flow rate adjusting means based on the detected inflow pressure and a target water discharge amount predetermined for each of the selected fluid flow paths.

A water spouting form switching device according to a tenth aspect of the present invention is a water spouting form switching device for switching a water spouting form from a water spout body of a faucet body, wherein an internal flow path formed in the faucet body and reaching the water spout port. And a drive source for driving the water discharge mode switching unit, which is driven in the internal flow path and switches the water discharge mode from the water discharge port, and an inflow pressure of the fluid flowing into the internal flow path. Is provided with inflow pressure detection means for detecting in the internal flow path, and control means for controlling the drive source to drive the water discharge mode switching portion based on the detected inflow pressure. .

A water discharge amount adjusting device according to a twelfth aspect is a water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a water faucet body, wherein a fluid flowing through a pipe connected to the water faucet body is adjusted. An inflow pressure for detecting in the internal flow path a flow rate detection means for detecting a flow rate, and an inflow pressure of the fluid reaching the water discharge port through a fluid flow path including an internal flow path formed in the faucet body. Based on the detection means, a flow coefficient storage means for storing a flow coefficient of the fluid flow path including the internal flow path, and the stored flow coefficient and the inflow pressure detected by the inflow pressure detection means,
Flow rate calculation means for calculating the flow rate of the fluid passing through the internal flow path, and correction for correcting the flow rate coefficient of the flow rate coefficient storage means based on the calculated calculated flow rate and the detected flow rate detected by the flow rate detection means. It is the gist to have means.

A water discharge amount adjusting device according to a fifteenth aspect is a water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a faucet body to a predetermined target water discharge amount, which is formed in the faucet body. Inflow pressure detection means for detecting the inflow pressure of the fluid that has passed through the fluid flow path including the internal flow path and reaches the water discharge port, and an allowable inflow in which the detected inflow pressure is predetermined. The gist of the present invention is to include a water discharge abnormality detecting unit that makes water discharge from the water discharge port abnormal when the pressure is out of the pressure range.

A water discharge amount adjusting device according to a sixteenth aspect is a water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a faucet body to a predetermined target water discharge amount, which is formed in the faucet body. Flow path switching means for selectively connecting and switching a plurality of fluid flow paths including internal flow paths and having different flow coefficients to the water outlet of the faucet body, and to the water outlet selected by the flow path switching means. Inflow pressure detection means for detecting the inflow pressure of the fluid passing through the connected selected fluid flow path and reaching the water discharge port in the internal flow path, and the detected inflow pressure for each of the selected fluid flow paths. The gist of the present invention is to include a water discharge abnormality detecting unit that abnormally discharges water from the water discharge port when it is out of a predetermined allowable inflow pressure range.

[0025]

According to the water discharge amount measuring device having the above structure, when measuring the water discharge amount from the water discharge port of the water faucet body, first, the water flow amount including the internal flow path of the water faucet body is passed. The inflow pressure of the fluid reaching the water discharge port is detected in the internal flow path by the inflow pressure detection means. Then, based on the detected fluid inflow pressure, the water discharge amount calculation means calculates the water discharge amount from the water discharge port of the faucet body, and sets this as the water discharge amount.
By the way, the fluid inflow pressure in the internal passage of the faucet body is
There is an extremely strong correlation with the flow rate of the fluid that passes through the internal flow path and reaches the water discharge port. That is, the fluid inflow pressure and the flow rate are uniquely defined by a predetermined conversion formula, and the change in the flow rate is accurately reflected in the change in the fluid inflow pressure. Moreover, its responsiveness is high. Further, even if the faucet body moves up and down, the detection fluid inflow pressure reflects the fluctuation due to the up and down movement because the detection position is the internal flow path of the faucet body.

As a result, the water discharge amount calculated based on the fluid inflow pressure in the internal flow path is exactly the same as the flow rate of the fluid passing through the internal flow path and reaching the water outlet regardless of the vertical movement of the faucet body. Match.

According to a second aspect of the present invention, there is provided a water flow rate measuring device, wherein the measurement of the amount of water discharged from the water outlet of the faucet body is the same as that of the water flow rate measuring device according to the first aspect. Every time. That is, when a plurality of fluid flow paths including internal flow paths and having different flow coefficients are selected by the flow path switching means and connected to the water discharge port, they pass through the selected fluid flow path selected and reach the water discharge port. The inflow pressure of the fluid is detected in the internal flow path by the inflow pressure detection means. Then, on the basis of the the detected fluid inflow pressure and flow coefficient, the water discharge amount calculating means, and the water discharge amount which was calculated water spouting volume from the water discharge port of each object to be selected 択流fluid flow path.

The fluid inflow pressure detected by the inflow pressure detecting means is
It is for each selected fluid flow path selected by the flow path switching means, and since its detection position is also the internal flow path of the faucet body, it passes through the selected fluid flow path including the internal flow path. There is an extremely strong correlation with the flow rate of the fluid reaching the water outlet. Further, the change in the flow rate of the fluid reflects the change in the flow rate accurately and with high responsiveness, and naturally reflects the change due to the vertical movement of the faucet body.

As a result , the selected selected fluid flow path is connected.
There, in its water discharge amount calculated per a selected fluid flow path based on the fluid inflow pressure at the flow rate coefficient and the internal flow path, the fluid reaching the spout through the object to be selected fluid flow path including an internal passage Exactly matches the flow rate of.

In the water discharge amount adjusting device according to the fourth aspect, a fluid inflow pressure having an extremely strong correlation with the flow rate of the fluid passing through the fluid flow path including the internal flow path to reach the water discharge port is generated in the internal flow path. The inflow pressure detected by the inflow pressure detecting means and the predetermined target water discharge amount are used for the control of the flow rate adjusting means by the flow rate controlling means. As a result, it becomes possible to accurately match the target water discharge amount adjusted via the flow rate adjusting means with the flow amount of the fluid passing through the internal flow path and reaching the water discharge port.

According to a fifth aspect of the water discharge amount adjusting device, the control of the flow rate adjusting means by the same flow rate controlling means as the water discharge amount adjusting device according to the fourth aspect is selectively switched by the flow path switching means. This is performed for each selected fluid channel. That is, when a plurality of fluid flow paths including internal flow paths and having different flow coefficients are selected by the flow path switching means and connected to the water discharge port, they pass through the selected fluid flow path selected and reach the water discharge port. The inflow pressure of the fluid is detected in the internal flow path by the inflow pressure detection means. Then, the fluid inflow pressure detected for each selected fluid channel and the target water discharge amount predetermined for each selected fluid channel are used for the control of the flow rate adjusting means by the flow rate control means. As a result, the target water discharge amount adjusted for each selected fluid flow path through the flow rate adjusting means is exactly matched with the flow rate of the fluid that passes through the internal flow path of each selected fluid flow path and reaches the water discharge port. It becomes possible.

In the water discharge form switching device according to the tenth aspect, the control means controls the drive source based on the fluid inflow pressure of the internal flow passage detected by the inflow pressure detection means. As a result, the water discharge mode switching unit is driven to switch the water discharge mode from the water discharge port. As a result, it becomes possible to drive the water discharge mode switching unit in consideration of the load applied to the drive source due to the fluid inflow pressure.

According to a twelfth aspect of the present invention, in the water discharge amount adjusting device, the inflow pressure of the fluid which passes through the fluid flow path including the internal flow path and reaches the water discharge port is detected in the internal flow path by the inflow pressure detecting means.
Based on the detected fluid inflow pressure and the flow coefficient stored by the flow coefficient storage means for the fluid flow path including the internal flow path,
The flow rate calculation means calculates the flow rate of the fluid passing through the internal flow path. On the other hand, the flow rate detecting means detects the flow rate of the fluid passing through the pipe connected to the faucet body. Then, based on the calculated flow rate on the faucet body side and the detected flow rate on the piping side, the correction means corrects the flow coefficient of the flow coefficient storage means.

Generally, when the faucet body is used, the state of the fluid flow passage including the internal flow passage such as the shape of the water discharge hole, the opening area, and the fluid resistance changes due to some unavoidable cause. Since the flow coefficient of the fluid flow path naturally changes, the amount of water discharged from the water outlet changes with time. Therefore, if the amount of water discharged from the water outlet of the faucet body is adjusted without considering such changes in the amount of water discharged over time, the following situation will result.

For example, if clogging occurs for some reason, the flow coefficient of the fluid path changes. Therefore, when the target water discharge amount of the water discharge amount is adjusted to match the calculated flow rate on the faucet body side, depending on the variation of the flow coefficient of the fluid flow path,
The fluid inflow pressure must be changed. However, the variable region of the fluid inflow pressure is limited by the faucet body or the like. Also, even if the target flow rate is adjusted so that the detected flow rate on the pipe side matches, the change in the flow rate coefficient of the fluid flow path cannot be avoided, so it is difficult to make the water discharge rate from the water outlet constant.

However, if the flow rate coefficient used to calculate the fluid flow rate is corrected based on the calculated flow rate on the faucet body side and the detected flow rate on the piping side, the flow rate coefficient after this correction will vary with time. Since the fluid inflow pressure corresponding to and the detected flow rate on the piping side are reflected, the calculated flow rate on the faucet body side calculated based on the corrected flow coefficient and the detected inflow pressure also It is possible to reflect the detected flow rate and the variation of the water discharge amount over time. Therefore, by using this calculated flow rate for flow rate adjustment, it becomes possible to adjust the water discharge rate in consideration of the change in water discharge rate over time.

According to a fifteenth aspect of the present invention, there is provided an inflow pressure detecting means for detecting a fluid inflow pressure having a very strong correlation with a flow rate of a fluid passing through a fluid flow path including an internal flow path and reaching a water discharge port. Is detected in the internal flow path. Then, when the detected fluid inflow pressure of the internal flow path deviates from the predetermined allowable inflow pressure range, the water discharge abnormality detection unit abnormally discharges water from the water discharge port.

As a result, it is possible to accurately judge the suitability of the flow rate adjustment based on the abrupt change of the fluid inflow pressure and the change tendency thereof.

According to the water discharge amount adjusting device of the sixteenth aspect, the flow path switching means selectively switches the judgment of the water discharge abnormality from the water outlet by the water discharge abnormality detecting means similar to the water discharge amount adjusting apparatus of the fifteenth aspect. This is performed for each selected fluid channel. That is, when a plurality of fluid flow paths including internal flow paths and having different flow coefficients are selected by the flow path switching means and connected to the water discharge port, they pass through the selected fluid flow path selected and reach the water discharge port. The inflow pressure of the fluid is detected in the internal flow path by the inflow pressure detection means. Then, when the fluid inflow pressure detected for each of the selected fluid flow paths is out of the predetermined allowable inflow pressure range for each of the selected fluid flow paths, the water discharge abnormality detecting means determines that the water discharge from the water discharge outlet is abnormal. To do.

As a result, it is possible to accurately judge the suitability of the flow rate adjustment for each selected fluid channel by the rapid change of the fluid inflow pressure or the change tendency thereof.

[0041]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a water discharger TS in a hot water supply system for a bathroom will be described with reference to the drawings. FIG. 1 is an external view of the bathroom, and FIG. 2 is a schematic block diagram showing the overall configuration of the water discharge device TS. First, the configuration of the bathroom R having a plurality of hot water supply points will be described.

As shown in FIG. 1, the water discharger T of this embodiment.
S is a hot water supply point in the bathroom, which is a bathtub karan rk for discharging water to the bathtub r, a hand-type shower head A that can be attached to a predetermined position on the wall surface of the bathroom and used by hand, and a washroom currant for discharging water to the washroom. In addition, an operating part P for setting the water spouting destination, the water spouting amount, etc. is embedded in the bathroom wall surface near the washing facility and the position where it can be operated from inside the bathtub. ing. The operation section P includes a main controller 7 (see FIG. 2) that performs various controls of the entire water discharger, and outputs a control signal for instructing the main controller 7 on the water discharge destination, the water discharge amount, etc. on the surface thereof. Operation panel part PP (see FIGS. 2 and 3)
Equipped with.

As will be described later, the shower head A has a built-in water discharge mode switching mechanism for switching the water discharge mode, and discharges water in four kinds of water discharge modes among various water discharge modes described below. These four types of water discharge forms are, for example, spray water discharge, straight water discharge, spot water discharge in which straight water from the shower hole is collected at one point, foam water discharge in which bubbles are mixed in the shower water, and stick water discharge. It is selected from any combination of water discharge forms such as a water discharge for giving a water discharge, a water discharge for mist water discharge, and a water discharge for a massage having a rotary blade. In the present embodiment, the four types of water discharge forms are a water discharge form of pouring a stick-like water discharge, a water discharge form of spray, a water discharge form of foam, and a water discharge form of spot.

Next, the detailed structure and electrical structure of each device of the water discharge device TS will be sequentially described. Washing place Karan n
As shown in the schematic block diagram of FIG. 2, the hot and cold water mixing taps MO provided at the root of the are connected to the water inflow pipe 1 and the hot water inflow pipe 2 from a water heater (not shown), respectively. Flow rate adjusting valves 3 and 4 for adjusting the flow rates of water and hot water in the respective pipelines, and a thermistor 1 for detecting the water temperature and the hot water temperature in the respective pipelines on the upstream side of the respective valves.
a, 2a. These flow rate adjusting valves 3 and 4 are
Actuators 5 and 6 that control the flow rate are attached.

Downstreams of the flow rate adjusting valves 3 and 4 are connected to form a hot and cold water discharge connection pipe 10, and the water and hot water in the respective pipelines join and mix here. The hot water temperature at the hot water discharge connection pipe 10 is
It is determined by each temperature of water and hot water and its mixing ratio. The hot and cold water discharge connection pipe 10 is provided with a water amount sensor 8 for detecting the flow rate and temperature of the mixed hot and cold water in the flow path, and a thermistor 9. Each actuator is a stepping motor. Further, the water amount sensor 8 is configured by providing an impeller that rotates in proportion to the flow rate passing through the hot and cold water discharge connection pipe 10 inside the connection pipe, and the rotation speed N of the impeller as the flow rate at the hot and cold water discharge connection pipe 10. Is output.

A water discharge switching unit 11 is provided downstream of the hot and cold water discharge connection pipe 10, and a shower head A, a bathtub lan rk, a washing basin n, and a so-called sewage pipe 12 for discharging hot and cold water outside the bathroom are connected thereto. Has been done. The water discharge switching unit 11 switches the discharge destination of the mixed water,
A solenoid valve (see FIG. 17) provided for each water discharge port is turned on / off by a main controller 7 described later to switch the water discharge destination. Turning on / off of each solenoid valve by the main controller 7 is performed based on a pressed state of a shower water discharge switch 73 (see FIG. 4) described later provided on the shower head A and an operation of various buttons on an operation panel section PP described later. Done. The water discharge switching unit 1
1, the washing facility karan n is directly connected, the bathtub karan rk is connected via a pipe (not shown) arranged in the bathroom wall, and the shower head A is connected via a shower hose h.

The various sensors and actuators of the hot and cold water mixing valve MO and the sub controller 67 built in the shower head A are connected to the main controller 7 together with the operation panel section PP. The main controller 7 determines the actuator drive amount (stepping motor drive amount), the water discharge destination, etc. on the basis of various control signals from the respective sensors and the sub controller 67, and determines the actuators 5, 6 and the water discharge switching unit 11 etc. Drive control is performed and a control signal is output to the sub controller 67 of the shower head A. Details of the electrical configuration of the two controllers, transmission / reception of control signals, and various controls performed by both controllers will be described later.

When the actuators 5 and 6 are driven by the main controller 7, water and hot water having a flow rate determined by the drive amount of each actuator flow into the hot and cold water discharge connection pipe 10 to be mixed. Therefore, from the shower head A and each of the currants set as the water discharge destination by the water discharge switching unit 11, the temperature of the water and the hot water itself is mixed with the temperature determined by the flow ratio of the water and the hot water regulated by the flow rate adjusting valves 3 and 4. Hot water is discharged.

As shown in FIG. 1, the operation panel section PP of the operation section P which can be operated from the vicinity of the washing facility and the bathtub is
In addition to specifying each water discharge destination and water discharge form, the water discharge amount per unit time (hereinafter referred to simply as the water discharge amount) and water discharge temperature for each water discharge destination and water discharge form is changed each time. It has a simple structure.

As shown in FIG. 3, the operation panel section PP has a power button 150 for powering on, a display 151 which normally operates as a clock for displaying the current time, and displays various messages each time. In addition to the water discharge amount indicator 152 that relatively displays the water discharge amount from the water discharge destination, the water discharge temperature indicator 153 that numerically displays the water discharge temperature from the water discharge destination, the speaker 166 for anomaly notification, etc. Various instruction button groups for designating, various instruction button groups for designating the water discharge form from the shower head A from the operation panel section PP, and various button groups for changing the water discharge temperature and the water discharge amount are provided. Each button group constitutes a matrix switch. Each of these buttons is a push type,
The control signal is sent to the main controller 7 each time the pressing operation is performed.
Output to. As shown in the figure, in addition to the character string, the surface of each of the above-mentioned buttons has a picture in which the corresponding function is designed.

As a group of various instruction buttons for individually designating the spouting destination, a bathtub currant instruction button 154, a washroom currant instruction button 155, and a shower head designation button 1
And 56 are provided. Then, when these buttons are pressed, the signals are input to the main controller 7, and the main controller 7 receiving this signal switches the water discharge destination.

For example, when the bathtub currant instruction button 154 is pressed, water is discharged from the bathtub currant rk. Similarly, when the washing place currant instruction button 155 or the shower head designating button 156 is depressed, the washing place currant n or the shower head A is pressed. Spouted from. Moreover, if the designation button for designating a different spouting destination is pressed while water is being spouted from a certain spouting destination, the spouting from the certain spouting destination that has been sprinkling until then is interrupted, and the pushed designation button is pressed. The water is discharged from the corresponding water discharge destination. Further, when the same button is continuously pressed twice, the water is stopped from the water discharge destination corresponding to the button at that time. Note that such switching of the water discharge destination is performed by switching the electromagnetic valve in the water discharge switching unit 11.

As various instruction button groups for designating the water discharge form from the shower head A, there are a cast designation button 157, a spray designation button 158, and a foam designation button 1.
59 and a spot designation button 160 are provided.
Then, when these buttons are pressed, similarly to the case of the above-mentioned instruction button for designating the spouting destination, the spouting form from the shower head A is switched to the spouting form corresponding to the pressed designating button. The state of switching the water discharge form will be described later in detail.

As a group of various buttons for changing the water discharge temperature and the water discharge amount, a water discharge temperature increase instruction button 162 is provided.
A water discharge temperature decrease instruction button 163, a water discharge amount increase instruction button 164, and a water discharge amount reduction instruction button 165 are provided. Then, when these buttons are pressed, the signals are also input to the main controller 7, and the main controller 7 receiving the signals changes the water discharge temperature and the water discharge amount as follows. The optimum water discharge temperature and water discharge amount for each currant and each water discharge form are, as initial values, a built-in RO in the MPU 7a of the main controller 7 described later.
It is written in a predetermined address of M and is used as a control initial value.

When the water discharge temperature increase instruction button 162 is operated, the desired water discharge temperature obtained by changing the current set water discharge temperature according to the number of times of operation is processed by the main controller 7 as the set water discharge temperature. As a result, the main controller 7 calculates the actuator drive amount of each flow rate control valve so that water can be discharged at this set water discharge temperature, and the hot and cold water discharge connection pipe 1
The discharge water temperature is controlled through the flow rate adjustment of water and hot water while referring to the detected temperature from the thermistor 9 at 0.

When each of the above-mentioned instruction buttons relating to the change of the water discharge amount is operated, the desired water discharge amount obtained by gradually changing the currently set water discharge amount in accordance with the number of times the corresponding instruction button is operated is the main set water discharge amount. It is processed by the controller 7. For example, if the water discharge amount increase instruction button 164 is operated once, the water discharge amount obtained by increasing the currently set water discharge amount by one step is set as a new set water discharge amount. This set water discharge amount can be changed for each water discharge destination and for each water discharge form within a range of levels 1 to 5 when the preset optimum water discharge amount is level 3 (control initial value). The details of the water discharge temperature control and the water discharge amount control (flow rate control) will be described later.

Next, as described above, the shower head A capable of switching the four water discharge modes will be described. First,
Explaining the schematic configuration, as shown in FIG. 2, the shower head A has a water discharge portion B housed in the water discharge case 21, a hot water flow passage 62, and a device storage space 63 other than this flow passage from the tip thereof. The shower head main body D is formed to be secured, and the water discharge case 21 is watertightly assembled to the shower head main body D with the seal portion C interposed between the shower head main body D and the water discharge portion B. . Further, a hose connecting portion E is provided in a watertight manner at the lower end of the shower head body D, and the end of a shower hose h connected to the water discharge switching portion 11 is connected to the hose connecting portion E.

Next, the detailed structure of each portion will be described with reference to FIG. 2 and FIG. 4 which is a vertical sectional view of the showerhead A, and FIG. 5 which is a sectional view taken along the line I-I thereof. As shown in the figure, the water discharge portion B closes the upper end surface and the water discharge window 3 on the side surface.
The water spouting case 21 in which 0 is formed is rotatably housed in the water spouting body 23. And this rotary water discharge body 2
3 is fixed to the rotary shaft 29 that penetrates the seal portion C from the device storage space 63 and projects into the water discharge case 21.
As shown in FIGS. 4 and 5, the rotary shaft 29 is chamfered over the range within the rotary water discharge body 23, and the rotary water discharge body 23 fits the chamfered portion of the rotary shaft 29 at the center thereof. The shaft fixing hole 23a is formed.

Therefore, the shaft fixing hole 2 in the center of the rotary water discharger 23
If the rotary shaft 29 is inserted into 3a and the upper portion thereof is screwed as shown in the drawing, the rotary water discharger 23 rotates integrally with the rotary shaft 29 without idling with respect to the rotary shaft 29. Since the rotary water discharger 23 is almost covered with the water discharge case 21, it is not manually rotated from the outside. Further, a rotational force is transmitted to the rotary water discharger 23 from an electric drive unit 64 described later, but the rotation direction is only one (counterclockwise as viewed from the water discharge case 21).

As shown in FIG. 5, the rotary water discharger 23 has water discharge nozzles 24, 25, 26, 27 divided into four in the circumferential direction.
The spout window 30 (shown in FIG. 4 is the spout nozzles 24 and 26).
Prepare according to the opening position of. Then, it rotates integrally with the rotary shaft 29 so that one of the water discharge nozzles 24 to 27 faces the water discharge window 30 (see FIG. 13). The rotation control of the rotary water discharger 23 at this time will be described later.

Each of the water discharge nozzles 24-27 is shown in FIG.
As shown in (a) to FIG. 6 (d), different water discharge holes are provided to realize water discharge in each of the above water discharge modes, and each water discharge hole is made to face the water discharge window 30, and the above-described four water discharge holes are provided. Water discharge form (spray: Fig. 6 (a), spot: Fig. 6
(B), foam: FIG. 6 (c), singing: FIG. 6 (d)). That is, the rotary water discharger 23 including the water discharge nozzles 24 to 27 constitutes a water discharge mode switching mechanism. In addition, according to the rotation of the rotary water discharger 23, each of the water discharge nozzles 24 to 27 has a structure shown in FIGS.
The water discharge hole is made to face the water discharge window 30 in the order of (d).

On the back surface of each water discharge nozzle 24-27 (the surface on the rotary shaft 29 side of each water discharge nozzle in FIG. 5), there is formed a nozzle communication passage 28 which communicates from the bottom surface of the rotary water discharge body 23 to each water discharge nozzle. There is. The nozzle communication passage 28
As shown in FIG. 5, is formed in an appropriate shape according to each water discharge nozzle that determines the water discharge form.

Next, the seal portion C interposed between the water discharge portion B and the shower head body D will be described in addition to FIG.
FIG. 7 is an exploded perspective view of the seal portion C and FIG. 8 is a sectional view.
And FIG. 9 which is a bottom view. The seal portion C seals between the water discharge portion B and the shower head body D, and the water discharge nozzle facing the hot water flow passage 62 of the shower head body D and the water discharge window 30 (the water discharge nozzle 24 in FIG. 4). In order to communicate with the nozzle communication passage 28 of the above, it is configured as follows.

As shown in FIGS. 7 and 8, the seal portion C is
A water discharge seal base C1 having a disk-shaped constant thickness, and a pressure bonding seal board C2 assembled on the water discharge seal base C1.
With. The water discharge seal board C1 is watertightly fitted and fixed to the lower end opening of the water discharge case 21, and is assembled and fixed by the water discharge case 21 so that the bottom surface of the shower head body D contacts the upper end surface thereof.

The water discharge seal board C1 is provided with a shaft hole 41 into which the rotary shaft 29 is inserted and a counterbore hole 41a concentrically at the center of the board, and the shaft hole 41 and the counterbore hole 41a are provided on the upper surface.
A circular recess 42 is provided at an eccentric position including. Furthermore,
As shown in FIGS. 8 and 9, an annular groove 43 having a constant width is provided on the bottom surface around the shaft hole 41. Further, in the bottom surface of the circular recess 42 of the water discharge seal base C1, a long hole-shaped vertical hole 44 is formed on the side of the shaft hole 41 so as to communicate with the annular groove 43 on the bottom surface. Therefore, when the water discharge seal board C1 is assembled and fixed by bringing its bottom surface into contact with the upper end surface of the shower head body D, the vertical hole 44 is formed in the hot and cold water flow path 62 of the shower head body D as shown in FIG. The upper end opening is communicated with the annular groove 43. In addition, spout water seal base C1
A spiral notch 55 that engages with the upper end of the head case 61 is formed on the peripheral edge of the lower surface.

Furthermore, a three-month-shaped shallow groove 45 is formed on the upper surface of the water discharge seal substrate C1. Therefore, when the water discharge seal board C1 is assembled and fixed with the bottom surface of the shower head body D in contact with the bottom surface thereof, the rotary water discharge body 2
Even if the bottom surface of 3 and the top surface of the water discharge seal base C1 come into contact with each other, the contact range is a very narrow area range excluding the three-month-shaped shallow groove 45.

Next, the pressure-bonding seal board C2 assembled in the circular recess 42 of the water discharge seal base C1 will be described with reference to FIG.
Also, description will be made with reference to FIGS. The pressure-bonding seal disk C2 has an upper disk C20 that is slidably fitted in a circular recess 42 in the vertical direction along its axial direction, and a counterbore hole 41 that is concentric with the shaft hole 41 and projects from the lower surface of the upper disk C20.
and a lower disk C21 inserted in a. And
When assembled to the water discharge seal base C1, its upper surface is made to coincide with the upper surface of the water discharge seal base C1. That is, the contact area between the bottom surface of the rotary water discharger 23 and the seal portion C is the upper surface of the water discharge seal base C1 excluding the above-mentioned three-month shallow groove 45, and the upper shaft hole 46 and the upper vertical hole 47 described later. It becomes the upper surface of the crimp seal board C2.

The pressure-bonding sealing disk C2 is the upper disk C2.
0 and the lower disk C21, the upper shaft hole 46 into which the rotary shaft 29 is fitted, and the upper vertical hole 47 having the same shape (long hole shape) as the vertical hole 44 of the water discharge seal base C1 are provided on the side thereof. . The upper shaft hole 46 is formed so as to be concentric with the shaft hole 41 of the water discharge seal base C1 when the pressure-bonding seal board C2 is assembled to the water discharge seal base C1, and the upper vertical hole 47 is formed as shown in FIG. As shown in FIG. 7, the holes are formed so as to be displaced from the vertical hole 44 toward the shaft hole 41. Therefore, the upper vertical hole 47 and the vertical hole 4
4 is in communication with part of the holes aligned.

Further, the crimp seal disk C2 has seal grooves 48a, which are formed on the peripheral side surfaces of the upper disk C20 and the lower disk C21.
48b, and a seal member (O
Rings) 49a and 49b are attached. In addition, a seal groove 50a is provided on the upper surface of the upper disc C20 around the upper vertical hole 47, and a seal member (O ring) 50 is attached to this seal groove.

Therefore, when the seal portion C, which is integrated through the assembling of the water discharge seal board C1 to the pressure-bonding seal board C2, is incorporated between the shower head body D and the water discharge portion B, the shower heads are caused by the respective seal members. A seal between the main body D and the water discharge part B is performed. Specifically, the sealing members 49a and 49b seal between the inner peripheral surfaces of the circular recess 42 and the counterbore hole 41a and the outer peripheral surfaces of the upper disc C20 and the lower disc C21, and the sealing member 50 upper surface of the upper disc C20. The bottom surface of the rotary water discharger 23 is sealed. However, the upper vertical hole 47, the vertical hole 44, and the nozzle communication passage 28 of the water discharge nozzle (the water discharge nozzle 24 in FIG. 4) facing the water discharge window 30 are in communication with each other. When assembling the above-mentioned seal portion C, as shown in FIGS. 2 and 4, the rotary shaft 29 integrally fixed to the rotary water discharger 23 is inserted into the shaft hole 41 and the upper shaft hole 46. In this case, the space between the rotary shaft 29 and the upper shaft hole 46 is sealed by a Y packing 29b mounted on the outer peripheral surface of the rotary shaft 29.

Here, FIG. 10 and FIG. 11, which are enlarged cross-sectional views around the seal portion C, show how the seal portion C seals the shower head body D and the water discharge portion B.
Will be explained.

When the hot water does not flow into the shower head A, the pressure of the hot water inflow is not applied to the lower surface of the pressure-bonding seal board C2. Therefore, as shown in FIG. 10, the pressure-bonding seal board C2 has a circular concave portion of the water discharge seal base C1. 42 It is sinking to the bottom.
The rotary water discharger 23 is supported by the shoulder 29 a of the chamfered portion of the rotary shaft 29. In this case, the rotary shaft 29 is sealed by the sealing members 49a, 49b and the Y packing 29b.
Between the upper surface and the second upper surface, the bottom face of the rotary water discharger 23 is only in contact with the seal member 50 due to its own weight or the like, and there is a slight gap so that the seal is not sufficient. However, since no hot water flows into the shower head A, there is no problem.

On the other hand, as shown by the arrows in FIGS. 4 and 11,
When hot and cold water flows from the shower hose h through the hot and cold water flow path 62 of the shower head body D to the pressure bonding seal board C2, the pressure of hot water flowing into the lower surface of the pressure bonding seal board C2 causes the pressure bonding seal board C2 to be a circular shape of the water discharge seal base C1. Float from the bottom of the recess 42. That is, the pressure-bonding seal board C2 slides along the rotating shaft 29 and comes into close contact with the bottom surface of the rotary water discharger 23 with the upper surface thereof as the pressure receiving surface. In this case, the seal members 49a and 49b and the Y packing 29b are sealed along the rotary shaft 29 as described above, and the space between the bottom surface of the rotary water discharger 23 and the top surface of the pressure-bonding seal board C2 is crushed as shown in the drawing. It is sealed by the seal member 50. Therefore, the hot and cold water successively passes through the nozzle communication passage 28 of the water discharge nozzle (the water discharge nozzle 24 in FIG. 4) facing the vertical hole 44, the upper vertical hole 47, and the water discharge window 30 next to the annular groove 43, and the water discharge concerned. Water is discharged from the nozzle in a predetermined water discharge form.

For example, as shown in FIG. 4, the water discharge nozzle 24
If it faces the water discharge window 30, since the water discharge nozzle 24 is a water discharge nozzle corresponding to the water discharge in the spray water discharge form (see FIG. 6A), the water discharge window 30 discharges water in the spray water discharge form. To be done.

Next, regarding the shower head main body D, FIG. 4 and FIG. 12 which is a sectional view taken along line II-II thereof, and FIG. 13 which is a right side arrow view of FIG. 4 and a front view of the shower head A are used. Explain. As shown in FIG. 4, the shower head body D has a head case 61 that forms a hot and cold water flow passage 62 and a device storage space 63 that stores various devices described later, and has the following configuration.

The hot and cold water flow path 62 of the shower head body D is
As shown in FIG. 12, it is formed in a substantially oval cross section along the inner peripheral wall of the head case 61 from the upper end to the lower end of the case. Further, the hot and cold water flow passage 62 is formed on one side of the inner peripheral wall, and the cross-sectional shape thereof is formed substantially the same from the upper end to the lower end of the head case 61. As a result, the device storage space 63 occupies most of the internal space including the center of the head case 61 as shown in FIG. The hot and cold water flow passage 62 is formed so that its effective passage area is substantially the same as that of the shower hose h, and at the lower end of the head case 61, a horseshoe-shaped groove 62a is formed along the inner peripheral surface of the case (see FIG. 15). Is in communication with.

The shower head body D has an electric drive section 64 for driving the rotary water discharger 23 in the equipment storage space 63 formed by occupying most of the internal space of the head case 61 as described above. Built-in. The electric drive unit 64 constitutes a main part of the water discharge mode switching mechanism, and is suspended from the rotary water discharge unit 23 via a rotary shaft 29 that is fixed to the rotary water discharge unit 23 and extends into the head case 61. And has the following configuration.

As shown in FIG. 4, the electric drive unit 64 is
In order from the seal portion C side, a potentiometer 65 for detecting the rotational position of the rotary shaft 29 and a geared motor 66 are provided, and these are connected and integrally configured. The geared motor 66 includes a reduction gear portion 66a for reducing the rotation of the motor at a predetermined reduction ratio, and a rotation shaft 2 at the reduction gear portion 66a.
9 and a motor rotating shaft are connected to each other, and a motor 66b that applies a rotational driving force to the rotating shaft 29 is integrally formed.
The potentiometer 65 and the reduction gear portion 66a are composed of upper and lower screw stop portions 6 protruding in three directions from the outer peripheral surface of the joint portion.
5a and 65b are fastened to each other by screws (not shown) to be integrated. Further, the reduction gear portion 66a and the motor 66b are integrated by a fixture (not shown) attached to the reduction gear portion 66a. In addition, in order to perform accurate rotational positioning of the rotary water discharger 23, the reduction gear portion 66a includes
A non-backlash mechanism for limiting the rotation direction of the geared motor 66 to one way is provided.

For this reason, the geared motor 6 is detected while the rotary position of the rotary water discharger 23 is detected by the potentiometer 65.
When the water spouting body 23 is rotated by driving 6 and the desired water spouting nozzle faces the water spouting window 30, it is possible to spout water in a water spouting form determined by the water spouting nozzle. The configuration of the potentiometer 65, the state of detecting the rotational position of the rotary water discharger 23, the drive control of the geared motor 66, and the like will be described later.

Between the upper end surface of the potentiometer 65 and the upper side wall 69 of the head case 61, as shown in FIG. 4, there is provided a stopper flange 68 for restricting lifting of the electric drive section 64 along the rotation axis. It is fixedly provided on the rotating shaft 29. Flange 68 for this stopper
When there is no inflow of hot and cold water to the shower head A and the lower surface of the rotary water discharger 23 is in contact with the upper surface of the seal portion C due to its own weight and the weight of the electric drive portion 64, the water is slightly in contact with the upper side wall 69. Located with a gap of. However, when the hot water flows into the shower head A and the rotary water discharger 23 and the electric drive unit 64 float up together with the pressure-bonding seal board C2 due to the flow pressure thereof, the stopper flange 6 together with the rotary shaft 29.
8 is lifted and abuts on the upper side wall 69 of the head case 61. Therefore, further lifting along the rotation axis of the electric drive unit 64 is avoided.

Further, on the outer peripheral surfaces of the potentiometer 65 and the reduction gear portion 66a integrally formed with the geared motor 66, there are two anti-rotation pieces 70 protruding toward the inner peripheral wall of the head case 61 in two directions, as shown in FIG. It is provided. The rotation preventing pieces 70 are attached to the head case 6
It engages with each engaging recessed portion 71 formed on the inner peripheral wall of No. 1 with a predetermined gap. Therefore, the electric drive unit 64 including the geared motor 66 and the like is connected to the rotary water discharger 23 by the rotary shaft 2.
Although it is suspended and supported via 9, it is configured so as to be vertically movable along the rotation axis direction and not to rotate.

Further, the shower head main body D includes a sub-controller 67 in the equipment storage space 63 for controlling the drive of the electric drive unit 64, and a pressure sensor 75 for measuring the pressure in the hot and cold water flow passage 62. The thick wall portion 61a of the head case 61 below the water discharge window 30 is provided with a shower water discharge switch 73 for performing an on / off operation of water discharge from the shower head A and a shower changeover switch 74 for changing the water discharge mode. Prepare by embedding.

As shown in FIG. 4, the sub controller 67
Is attached to the inner wall of the head case 61 below the geared motor 66. The shower water discharge switch 73 and the shower changeover switch 74 are so-called spring-back type switches having a built-in spring.
As shown in FIG. 13, it is embedded in the thick portion 61a of the head case 61 below 0 so as to be pressed from the outside. In addition,
Each switch is arranged so as to be covered with a waterproof resin sheet (not shown).

The pressure sensor 75 has its sensor element portion 7
The pressure detection surface 75b of 5a is exposed in the hot and cold water flow path 62, and is attached and fixed to the wall surface of the equipment storage space 63. The pressure sensor 75 is used to detect the pressure of the hot water flowing in the hot water flow passage 62 to control the water discharge amount, and the like, as will be described later.
Connected with. The water discharge amount control and the like using the hot and cold water pressure in the hot and cold water flow path 62 detected by the pressure sensor 75 will be described later.

Next, the hose connecting portion E for connecting the shower hose h to the head case 61 of the shower head main body D will be described with reference to FIG. 4 and its sectional view taken along line III-III in FIG. As shown in FIG. 4, the hose connecting portion E includes a hose joint body 81 to which the end of the shower hose h is fixed, and a tightening cylinder body 82 for fixing the end of the shower hose h to the hose joint body 81.
And a hose coupling case 83 that is screwed to the lower end of the shower head body D and covers the hose joint body 81.

The hose joint body 81 is provided at its lower end surface with a pipe 84 on the outer peripheral surface of which bamboo shoot projections are inserted and into which the shower hose h is inserted, and at its upper end surface, the head case 6 is provided.
1, a support protrusion 85 rotatably fitted in the lower end hole 76 of the device storage space 63, and a stopper pin 81a for restricting the rotation amount. This support protrusion 85
An O-ring for sealing is attached to the outer periphery of the lower end hole 7
6 is fitted, and even in that state, the hose joint body 81
Is manufactured in consideration of its size so as to be rotatable in the lower end hole 76.

Further, at the center of the support projection 85, a code hole 85a is provided which forms a wiring path of the electric wire bundle 89 reaching the hose connecting portion E together with the shower hose h as described later. The hose joint body 81 has a support protrusion 85.
From the cord hole 85a to the lower end surface of the hose joint body 81, and a water passage 86 from the inner hole of the pipe 84 to the upper end surface of the hose joint body 81.
And are formed so as to penetrate the joint body.

As shown in FIG. 14, this water passage 86 has 6
Although two holes are formed in the cord passage 88, the water passages 86 and the cord passage 88 are three-dimensionally formed at equal intervals without interfering with each other. The stopper pin 81a protruding from the upper end of the hose joint body 81 is buried to a depth that does not interfere with the cord passage 88. Further, the water passage 86 is formed so that the total cross-sectional area of each water passage 86, that is, the effective passage area is equal to the effective passage area of the hot water flow passage 62.

Next, the structure around the stopper pin 81a will be described with reference to FIG. 15, which is a sectional view taken along line IV-IV of FIG. The horseshoe-shaped groove 62a that communicates with the hot and cold water flow path 62 and the lower end of the head case 61 is formed by being surrounded by a lower peripheral wall of the head case 61, a peripheral wall of the lower end hole 76, and a rib 61b provided between both peripheral walls. 81a is
The groove 62a projects from the upper end surface of the hose joint main body 81 so that its tip portion enters.

The hose connecting portion E having the above structure is
The shower head A is assembled to the head case 61 as follows, the shower head A and the shower hose h are connected, and the hose and the hot and cold water flow passage 62 are connected.

First, the shower hose h is inserted into the pipe 84, the tightening cylinder 82 is screwed into the hose joint body 81, and the shower hose h is fixed to the hose joint body 81. Then, the support projection 85 is fitted into the lower end hole 76 of the device storage space 63 by fitting an O-ring, and the hose connecting case 8
3 is screwed onto the lower end of the shower head body D. A Y packing 81b is attached to the outer peripheral surface of the hose joint main body 81 to seal the inner peripheral surface of the hose coupling case 83.

When the hose connecting portion E is assembled in this way, the hot water flowing into each water passage 86 from the shower hose h is connected to the upper end surface of the hose joint body 81 and the hose connecting case 8.
3 and the inner peripheral surface of the water passage circuit 87, and the hot water flow passage 6
It passes through the groove 62a at the lower end of 2 and flows into the hot water flow passage 62. Then, as described above, the water is discharged in a predetermined water discharge form from the water discharge nozzle through the seal portion C.

In connecting the shower head A and the shower hose h in this manner, the hose connecting portion E is rotated through the hose joint main body 81 about the lower end hole 76 of the equipment storage space 63 as a rotation center. The shower head body D is rotatable with respect to the shower hose h. Further, as shown in FIG. 15, the rotation of the shower head A is within a range in which the stopper pin 81a can move around the lower end hole 76 in the groove 62a so that the stopper pin 81a does not contact the rib 61b (from a position indicated by X in the figure). Clockwise and counterclockwise are possible over the range up to the position indicated by Y). The diameter of the stopper pin 81a, the wall thickness of the rib 61b, and the like are set so that the shower head A can be rotated over approximately 360 degrees.

Next, the electric wire bundle 89 via the hose connecting portion E
Will be described with reference to FIG. 16 in addition to FIG. The electric wire bundle 89 is composed of a power supply electric wire 89a for the geared motor 66 and the like in the electric drive section 64 and a control electric wire 89b for transmitting a control signal, and one end of each electric wire is a main controller 7 in the operation section P as described later. It is connected to the. As shown in FIG. 16, this bundle of electric wires 89 is woven into the hose peripheral wall from the end of the shower hose h on the side of the hot and cold water mixing tap, reaches the end of the shower hose h, and then goes out to the outside to provide the cord passage 88. Also, wiring is provided in the code hole 85a of the support protrusion 85. At this time, the wire bundle 89 is laid between the end of the shower hose h and the lower end of the cord passage 88 with some slack in the cord.

Then, as shown in FIG. 4, it is connected to a connector 90 installed at the upper end of the lower end hole 76 of the equipment storage space 63, and the equipment storage space 6 is connected through this connector 90.
It is connected to the electric drive unit 64 and the sub-controller 67 in the unit 3. That is, the wire bundle 89 is connected to the hose joint body 8
In the lower end hole 76 of the device storage space 63, which is the center of rotation when the 1 rotates in the hose connection case 83, the connector 90
Connected to.

Next, the electrical configuration of the water discharger TS having the above-mentioned device configuration will be described with reference to FIGS. 17 and 18. The main controller 7 in the operation unit P of the water discharger TS described above is always powered on, displays the current time on the display 151 of the operation panel PP, and discharges water after the power button 150 is pressed. Various controls, which will be described later, necessary for the execution are started. Then, the following configuration is provided.

As shown in FIG. 17, the main controller 7 is composed mainly of a one-chip microcomputer, has a built-in ROM, RAM, etc., and controls an apparatus to be controlled according to various programs described later.
7a, and an input / output interface (hereinafter referred to as I / O) 7b for inputting / outputting with the outside. In addition to the above, the main controller 7 includes a power supply circuit 7c for applying a power supply voltage suitable for the MPU 7a and other electric devices, and a water side motor driver for driving the actuator 5 of the water side flow rate adjusting valve 3. 7d, a hot water side motor drive 7e, and solenoid valve drivers 7f to 7i for turning on and off the solenoid valves 11a to 11d provided in the water discharge switching unit 11 for each water discharge destination.

The I / O 7b has an operation panel section P.
Various sensors such as P, the thermistor 1a, the thermistor 2a, the water amount sensor 8, the thermistor 9, etc., the actuators 5, 6 and the water discharge switching section 11 etc. are connected. Of these, each of the actuators is a water side motor driver 7d.
Alternatively, the solenoid valves 11a to 11d of the water discharge switching unit 11 are connected via the hot water side motor drive 7e, and are connected via the solenoid valve drivers 7f to 7i. In addition, MPU7a
Is based on the output state of the valve opening / closing signal to each solenoid valve driver, and each solenoid valve 11a to 1a in the water discharge switching unit 11 is
The open / closed state of 1d is recognized and used for water discharge control described later.

Further, between the solenoid valve driver 7f for turning on / off the shower solenoid valve 11a for the shower head A and the I / O 7b, an analog switch 7m for opening / closing the circuit regardless of the control signal from the MPU 7a. Is provided. Furthermore, this analog switch 7m and the thermistor 9
Between, and the temperature detected by the thermistor 9 (mixed hot water temperature)
And a predetermined temperature pattern are compared with each other, and the analog switch 7m is provided with a comparator 7n for independently outputting a circuit open / close signal.

The temperature pattern for the comparator 7n to output the circuit open / close signal is prepared as a so-called hysteresis temperature pattern. Then, the comparator 7n causes the analog switch 7m to operate when the temperature detected by the thermistor 9 rises to a predetermined upper limit temperature, for example 50 degrees.
The control signal for opening the circuit is output to the analog switch 7m when the detected temperature of the thermistor 9 drops to a predetermined lower limit temperature, for example, 45 degrees.

As a result, the analog switch 7m is actuated in response to the control signal from the comparator 7n to open / close the circuit. Therefore, when the temperature of the mixed hot water of the shower head A reaches 50 degrees for some reason. , The circuit is opened, the shower solenoid valve 11a is turned off, and the water discharge from the shower head A is interrupted. Further, once the temperature of the mixed hot water drops to 45 degrees after the temperature rises to 50 degrees or more, the water discharge from the shower head A can be restarted from that point.

Sub-controller 6 on the shower head A side
7 is the main controller 7 as shown in FIG.
Similarly, it has an MPU 67a and an I / O 67b. The sub-controller 67 includes a voltage regulator 67c for applying a power supply voltage suitable for the MPU 67a and other electric devices on the showerhead A side, an amplifier 67d for amplifying a signal from the pressure sensor 75, and a geared motor. Motor driver 67e for driving 66
With. This voltage regulator 67c is shown in FIG.
As shown in FIG. 18, it is connected to the power supply circuit 7c of the main controller 7 via the power supply wire 89a of the wire bundle 89. Further, the motor driver 67e is the MPU 67a.
The geared motor 66 can be braked based on the control signal (brake signal) from the.

To this I / O 67b, switches such as a shower water discharge switch 73 and a shower changeover switch 74 and a potentiometer 65 are directly connected, a pressure sensor 75 is via an amplifier 67d, a geared motor 66 is via a motor driver 67e, Each is connected. The shower water discharge switch 73 is for instructing the start or stop of water discharge from the shower head A, and the shower changeover switch 74 is for switching the water discharge mode and instructing the target water discharge nozzle m. The specification of the start or stop of water discharge from the shower head A and the specification of the target water discharge nozzle m will be described later.

Here, regarding the potentiometer 65,
This will be described with reference to FIG. This potentiometer 65
Is for detecting which of the water discharge nozzles 24 to 27 the water discharge nozzle is facing the water discharge window 30 by detecting the rotational position of the rotary water discharge body 23. It has a simple structure.

As shown in FIGS. 19 (a) and 19 (b), the potentiometer 65 has a conductive brush support 101 fixed to the rotary shaft 29 and rotating integrally with the shaft, as shown in FIGS. 19 (a) and 19 (b). And three brushes 103a to 103c formed of a conductor and provided on the lower surface of the brush support 101.
And a detection substrate 105 fixed to a casing (not shown) of the potentiometer 65 having a circuit pattern described later. When fixing the conductive brush support 101 to the rotary shaft 29, insulation is provided between the two.

The detection substrate 105 has an annular circuit pattern 111 along the outer edge of the substrate on its surface, and four protruding circuit patterns 111a to 111a, which project from the annular circuit pattern 111 in the rotation axis direction with a phase of 90 degrees. 111d
A circuit pattern 113 extending from the ring-shaped circuit pattern 111 to the connector portion 105a of the detection substrate 105, a ring-shaped circuit pattern 114 separated from the ring-shaped circuit pattern 111 by a predetermined distance, and a strip-shaped pattern positioned between the ring-shaped circuit patterns 111 and 114. Four arc circuit patterns 115a to 115d
With.

Each of the circuit patterns described above has the brush support 10
When 1 rotates together with the rotating shaft 29, the brush 103c of the brush body 103 is formed on the surface of the annular circuit pattern 114.
So that they come into contact with each other, each arc circuit pattern 115a to 115
The brush 103a is formed so that the brush 103b contacts the surface d, and the brush 103a contacts the surface of each of the protruding circuit patterns 111a to 111d.

Each arc circuit pattern 115a to 115d
Are formed to have a width of 30 degrees in the circumferential direction and a phase of 90 degrees, and are formed so as to overlap the corresponding protruding circuit patterns 111a to 111d by 3 degrees in the circumferential direction.

Further, as shown in FIG. 19B, the detection substrate 105 has circuit patterns 117a to 117e corresponding to the annular circuit pattern 114 and the circular arc circuit patterns 115a to 115d on the back surface thereof. Each of the circuit patterns 117a to 117e is formed so as to be electrically connected to the annular circuit pattern 114 or the like through a through hole shown by a dotted line in the figure. That is, the circular circuit pattern 114 and the circuit pattern 117a are replaced by the circular circuit pattern 115a.
And the circuit pattern 117e are the arc circuit pattern 115.
b and the circuit pattern 117b are the arc circuit pattern 11
5c and the circuit pattern 117c are the arc circuit pattern 1
15d and the circuit pattern 117d are electrically connected to each other.

In the potentiometer 65 having the above-described structure, the annular circuit pattern 114 connected to the ground line via the circuit pattern 117a and any of the circular arc circuit patterns 115a to 115d to which a predetermined voltage is applied are connected to the rotary shaft 29. Electrical continuity is established through the brushes 103b and 103c of the brush support 101 that rotates integrally. In addition, the ring-shaped circuit pattern 114 and any of the protruding circuit patterns 111a to 111d to which a predetermined voltage is applied,
Conduction is made via the brushes 103a and 103c.

On the other hand, in assembling the potentiometer 65 together with the geared motor 66 and the like into the equipment accommodating space 63, the brush support 101 is provided with the water discharge nozzle 24.
Is fixed to the rotary shaft 29 so as to be positioned immediately below the one water discharge nozzle, that is, just below the one water discharge nozzle. Further, the detection substrate 105 is fixed at a position where the arc circuit pattern 115b comes into contact with the brush 103b of the brush support 101 when the rotary water discharger 23 faces the water discharge window 30 with the one water discharge nozzle. (See Figure 12).

Therefore, the sub-controller 67 connected to the potentiometer 65, based on the conduction state between the annular circuit pattern 114 and each of the circular arc circuit patterns 115a to 115d, the one water discharge nozzle, for example, the water discharge nozzle 2
It is possible to determine which position 4 is located, and by using this, which of the water discharge nozzles facing the water discharge window 30 is. That is, each arc circuit pattern 115
a to 115d are used for detecting the position of the water discharge nozzle.

The sub-controller 67 also includes the ring-shaped circuit pattern 114 and the protruding circuit patterns 111a-111.
Based on the conduction state with d, it is determined whether the rotary water discharger 23 is excessively rotated, and whether or not the geared motor 66 needs to be braked. That is, each of the protruding circuit patterns 111a to 111d
Is used to instruct a forced stop of the geared motor 66, as will be described later, and each water discharge nozzle has its water discharge hole through the water discharge window 30.
The stop position (indexing completion position) that correctly faces Regarding the position detection of the water discharge nozzle and the control of the geared motor 66 using this potentiometer 65,
It will be described later.

Next, the relationship between the above controllers will be described. The main controller 7 embedded in the wall surface of the bathroom and incorporated in the operation portion P and the sub-controller 67 incorporated in the shower head A are connected to each other via a wire bundle 89. More specifically, the power supply circuit 7c of the main controller 7 and the voltage regulator 67c of the sub controller 67 are connected by a power supply wire 89a, and the main controller 7 side MPU 6 of the shower head A is connected.
Power is supplied to electric devices such as the pressure sensor 75 such as 7a. Also, the I / O 7b of the main controller 7
And the interrupt terminal (INT) in the MPU 67a of the sub-controller 67, the I / O 67 of the sub-controller 67
b and the interrupt terminal (INT) of the MPU 7a of the main controller 7 are connected by a control electric wire 89b, and signals required for various controls to be described later are exchanged between the two controllers to transmit various information such as rotation. Communication of information such as the rotational position of the water discharge body 23 and the pressure detected by the pressure sensor 75 is executed.

[0115] Such communicated information and operation panel section P
Based on the button operation at P and the operation of the shower changeover switch 74 of the shower head A, the both controllers change the water discharge destination, change the water discharge mode, and the like.

Next, the water discharge device TS having the above-mentioned structure
The control such as the switching of the water discharge form performed by the above will be described based on the drawings.

First, the control performed on the main controller 7 side will be described. On the main controller 7 side, a water discharge state body side setting control (routine) for setting a water discharge state, a water discharge control (routine) for executing water discharge based on the set water discharge state, and a sub controller 6
Communication control (routine) for exchanging data with 7
And are repeatedly executed at a predetermined cycle.
Each of these routines is executed in each interrupt cycle as described later, but in consideration of overlapping interrupt timings, the water discharge state main body side setting routine, the water discharge routine, and the communication routine are executed in this order. Priorities are set.

The water discharge state main body side setting routine is always executed every 15 ms regardless of whether or not the power button 150 is operated, and performs each processing shown in the flowchart of FIG. First, the main body side information based on the on / off states of various buttons on the operation panel section PP and the outputs of various sensors such as the thermistor 1a is read (step 10).
0: Hereinafter, the step is simply expressed as S). More specifically, the on / off state of the power button 150, the on / off state of the matrix switch including the bathtub currant instruction button 154, the temperature of the thermistors 1a, 2a, 9 and the temperature of the hot water and the mixed hot water, and the amount of water. From the flow rate of the water discharged from the sensor 8 (rotation speed N) and the open state of each solenoid valve such as the shower solenoid valve 11a and the water solenoid valve 11b in the water discharge switching unit 11, the discharge instructed from the operation panel section PP side is performed. Head, water discharge temperature, water discharge amount, shower water discharge form and water discharge switching unit 1
The main body side information such as the switching state of 1 is read.

Among the matrix switches, the water discharge temperature increase instruction button 162, the water discharge temperature decrease instruction button 1
For 63, the set water discharge temperature is based on the button operation, and for the water discharge amount increase instruction button 164 and the water discharge amount decrease instruction button 165, the set water discharge amount (water discharge amount level value: 1 to 5) based on the button operation. Are calculated respectively, and the calculation result is read as data of the main body side information. At this time, a control signal corresponding to the calculated temperature and water discharge amount is output to the operation panel unit PP, the calculated set water discharge temperature is displayed numerically on the water discharge temperature indicator 153 of the operation panel unit PP, and the set water discharge amount is set to the level. It is displayed on the water discharge amount indicator 152 according to the value. For example, when the level value is 3, three of the display segments of the water discharge amount indicator 152 are turned on, and when the level value is 5, all of them are turned on.

After that, it is determined whether or not it is possible to make a transition to a water discharge state based on a certain amount of the read information, for example, the water discharge amount and the water discharge temperature according to the ON / OFF state of the matrix switch and the water discharge destination. Judgment is made from other information read in, for example, on / off of the power button 150, the open state of each solenoid valve in the water discharge switching section 11, the thermistor output, etc. (S110).

Here, if an affirmative decision is made, if it is possible to make a transition to a water discharge state based on the water discharge temperature, the water discharge amount, etc. determined by the water discharge temperature decrease instruction button 163, the water discharge amount increase instruction button 164, etc., then the water from the thermistors 1a, 2a And the temperature of the hot water and various instruction buttons (tub currant instruction button 154
Etc.), the read information is updated as main body side information used for control described later.
It is stored (S120). Specifically, the various information read in S100 is used as MP related information on the main body side.
It is updated and written to a predetermined address of the RAM in U7a. Then, this routine is once terminated and the processing from S100 is repeated.

On the other hand, if a negative decision is made that the transition to the water discharge state cannot be made, this routine is temporarily terminated without any processing. Therefore, in this case, the main body side information stored by the processing of this routine before the previous time remains.

Since the water discharge state main body side setting routine for performing such processing is interrupted every 15 ms as described above, by executing this routine, the matrix of the operation panel section PP is The main body side information based on the pressed state of the switch or the like is scanned every 15 ms, and is updated and stored whenever the pressed state is changed.

The information on the main body side includes all the information necessary for performing the water discharge in the water discharge form desired by the user who operates the matrix switch of the operation panel section PP and each switch of the shower head A. , Is updated and stored in the above-mentioned water discharge state main body side setting routine,
The predetermined data is also updated / stored by the head information received from the sub controller 67 in the communication routine described later.

In other words, when performing water discharge, regarding predetermined items, for example, the designation of the target water discharge nozzle m can be performed either from the singing designation button 157 or the like on the operation panel section PP side or from the shower changeover switch 74 on the shower head A side. You can give instructions. Therefore, regarding items that can be instructed from both the operation panel unit PP and the shower head A (target water discharge nozzle m, water discharge execution and water stop from each water discharge port, etc.), the head that reflects the operation status of each switch of the shower head A is reflected. The information on the main body side is updated by the information whenever necessary.
Remember. Therefore, the main body side information is the shower head A
The information reflects the operation status of each switch and the operation status of each switch of the operation panel unit PP.

Next, regarding the water discharge routine for executing water discharge based on the main body side information set in this way,
explain. This water discharge routine is executed every 250 ms while the power button 150 is in the ON state, and performs each processing shown in the flowchart of FIG. In this water discharge routine, the main body side information stored in the water discharge state main body side setting routine is read (S20
0), and the reading of the head information transmitted from the sub controller 67 of the shower head A and stored in the RAM of the MPU 7a in the communication routine described later (S205).
And are sequentially executed.

This head information includes data on the current water discharge nozzle M which the rotary water discharger 23 faces the water discharge window 30 at present, and the detected voltage VP of the pressure sensor 75 (voltage reflecting the pressure in the hot and cold water flow passage 62). ), Data regarding execution or stoppage of water discharge from the shower head A, and data regarding a target water discharge nozzle m that should be newly exposed to the water discharge window 30. Each data will be described later.

Then, it is judged which of the shower head A, the washing place curran n, and the bathtub currant rk is designated as the water discharge destination in the main body side information read in S200 (S210), and all the water discharge destinations are designated. If not, it is not necessary to inflow water and hot water from the inflow pipes 1 and 2, and both flow rate adjusting valves are fully closed (S213).
This routine is once ended.

In S210, the spouting point is the washing place
Alternatively, if it is determined to be the bathtub curran rk, a drive signal (ON signal) is output to the solenoid valve (washing place solenoid valve 11c or bathtub solenoid valve 11d) of the water discharge switching unit 11 corresponding to each curran to open the solenoid valve. The valve is controlled (S215), and then an off signal is output to the water solenoid valve 11b to perform the valve closing control (S215).
220). In other words, if the water spouting destination is the washing place curran n or the bathtub curran rk, there is no obstacle in starting the water spouting, and thus each solenoid valve is driven as described above to prepare for prompt water spouting from each curran.

Next, the water discharge process from each currant is carried out as described below (S230), and this routine is terminated. In this water discharge process, the hot and cold water discharge connection pipe 1 is set based on the temperatures of water, hot water, and mixed hot and cold water in the main body side information, the flow rate of the hot and cold water discharge connection pipe 10 and the set water discharge temperature and water discharge amount.
The flow rates of water and hot water to be flown into 0 are calculated, and the flow rate adjustment amounts of the flow rate adjustment valves 3 and 4 corresponding to the calculated flow rates, that is, the drive amounts of the actuator 5 and the actuator 6 (stepping drive amount) are calculated. To do. Then, a control signal corresponding to the calculated drive amount is output to the water side motor driver 7d and the hot water side motor drive 7e. Therefore,
Since each actuator is driven by each drive and each flow rate adjustment valve adjusts the flow rate, the calculated flow rate of water and hot water flows into the hot and cold water discharge connection pipe 10, and the set water discharge temperature and water discharge amount are supplied from any one of the above-mentioned currans. Is exhaled by.

Note that the water discharged from the currant is the shower head designation button 156 on the operation panel section PP.
Is newly pressed or the bathtub currant instruction button 154 is continuously pressed twice to change the main body side information, and the water discharge state based on this information is stored as transition possible in the water discharge state main body side setting routine. Continue until

On the other hand, if it is determined in S210 that the water discharge destination is the shower head A, it is determined whether or not the target water discharge nozzle m in the main body side information and the current water discharge nozzle M in the head information match (S235). . The current water discharge nozzle M is set by the sub controller 67 based on the output of the potentiometer 65, as described later.

If it is determined in S235 that the target water discharge nozzle m and the current water discharge nozzle M do not match, the drive signal (ON signal) output of the water discharge switching unit 11 to the slide water solenoid valve 11b is passed. Control for opening the solenoid valve (S240)
And the valve closing control (S245) of the electromagnetic valve through the output of the OFF signal to the shower electromagnetic valve 11a are sequentially executed in this order, and the process proceeds to the next S300. That is, when the target water discharge nozzle m and the current water discharge nozzle M do not match, the shower solenoid valve 11a is closed and the shower head A is closed.
The inflow of hot water to and from is stopped in preparation for the completion of indexing of the water discharge nozzle by the water discharge nozzle rotation control performed by the sub controller 67 on the shower head A side described later.

On the other hand, if it is determined in S235 that the target water discharge nozzle m and the current water discharge nozzle M coincide with each other, it is determined that the flow of hot water into the shower head A can be started, and the shower solenoid valve 11a of the water discharge switching unit 11 is controlled. Control for opening the solenoid valve through the output of the drive signal (ON signal) of S (S250)
Then, the valve closing control (S255) of the solenoid valve which has passed the output of the off signal to the water solenoid valve 11b is sequentially executed in this order, and the process proceeds to the next S300.

In S300 following S245 and S255, the following water discharge temperature control is performed so that water can be discharged from the shower head A at the set water discharge temperature in the main body side information (S300). That is, based on the temperature of the water itself in the inflow pipe 1 and the temperature of the hot water itself in the inflow pipe 2 detected by the thermistors 1a and 2a, the water temperature and the mixed hot and cold water temperature obtained when the hot water is mixed are obtained. A flow rate ratio of water and hot water for matching the set discharge temperature is calculated.

Next, in order to discharge water at the set water discharge temperature, S
The following flow rate control is performed so that water can be discharged from the shower head A at the set water discharge amount in the main body side information while maintaining the flow rate ratio of water and hot water calculated in 300 (S40).
0).

The flow rate is controlled by adjusting the flow rate based on the detection voltage VP of the pressure sensor 75, which is the first half of the flow rate control (FIG. 22).
And the correction / abnormality treatment of the control parameter based on the detected voltage VP which is the latter half (FIG. 24), which will be described in detail below.

This flow rate control will be described with reference to the flow chart of FIG. 22 from the flow rate adjustment which is the first half of the process.

As shown in the figure, in the flow rate adjustment in the flow rate control, first, it is determined whether or not the spouting from the shower head A is instructed in the read main body side information (S403). Here, shower water discharge switch 73
Is off, and the output of each water discharge form instruction button is off, it is judged that the shower head A does not execute water discharge in the main body side information. Since it is not necessary to inflow water or hot water, both flow rate adjusting valves are fully closed (S405), and this routine is once terminated.

On the other hand, if the output of either the shower water discharge switch 73 or each of the water discharge form instruction buttons is ON, it is judged that the shower head A is instructed to execute the water discharge in the main body side information, the main body is judged. While determining the flow rate of water and hot water based on the level value N (the level value of any one of 1 to 5) of the set water discharge amount regarding the current water discharge nozzle M (any of the water discharge nozzles 24 to 27) in the side information, The drive amounts of the actuators 5 and 6 for flowing the determined flow rates of water and hot water through the respective inflow pipes are calculated, and the respective flow rate adjusting valves 3 and 4 are driven via the respective motor drivers 7d and 7e (S407). At this time, it goes without saying that the flow rate ratio of water and hot water calculated in S300 is maintained.

The set water discharge amount of each level value is stored in advance in the ROM incorporated in the MPU 67a for each water discharge nozzle. Even if the set water discharge amount of the same level value is used, water is actually discharged from each water discharge nozzle. The water discharge amount differs for each water discharge nozzle. For example, in the case of the straight water discharge nozzle 24,
At the set water discharge amount of the level value 3, 7 liters of water is discharged per minute, and the squirting water discharge nozzle 27 discharges 10 liters of water per minute even if the set water amount of the level value is 3.

Next, from the level value N of the set water discharge amount and the current water discharge nozzle M, the set water discharge amount conversion voltage VMN of the flow rate map relating to the current water discharge nozzle M is read (S41).
0). As shown in FIG. 23, this flow rate map shows the pressure in the hot and cold water flow path 62 detected by the pressure sensor 75 when water is discharged from each water discharge nozzle at the set water discharge amount of each level value (1 to 5), that is, the set discharge. The water volume conversion voltage VMN and the above level values are associated with each water discharge nozzle, and the flow coefficient CVM predetermined by the size and shape of the hole of each water discharge nozzle (see FIG. 6) is associated with each water discharge nozzle. It is attached, and is stored in the ROM incorporated in the MPU 7a. In addition, the subscript M in the set water discharge amount conversion voltage VMN and the flow coefficient CVM indicates one of the symbols A, B, C, and D for distinguishing the water discharge nozzles of each water discharge form, and the subscript N is the set level value. Indicates any one of 1 to 5.

For example, the set water discharge amount is the water discharge amount of the level value 4, and the current water discharge nozzle M is the straight water discharge nozzle 2.
If 4, then this current water discharge nozzle M (water discharge nozzle 24)
With regard to the above, VB4 is read as the set water discharge amount conversion voltage VMN. Similarly, if the set water discharge amount is the water discharge amount of the level value 3 and the current water discharge nozzle M is the discharge water discharge nozzle 27, VD3 is read.

The set water discharge amount conversion voltage VMN (VA1 to VD5) for each water discharge nozzle is obtained by converting the set water discharge amount of each level value into the sensor output voltage of the pressure sensor 75. Is required through. The set water discharge amount of each level value is actually discharged from the water discharge nozzle, and the output voltage of the pressure sensor 75 is sampled when the actual water discharge amount measured by the flow rate measuring device outside the nozzle matches the set water discharge amount. Then, a significant voltage is obtained from this sampling voltage by using a statistical method or the like, and the obtained voltage is stored as the set water discharge amount conversion voltage VMN.

After reading the set water discharge amount conversion voltage VMN in this way, the set water discharge amount conversion voltage VMN is compared with the detection voltage VP of the pressure sensor 75, and the flow rate is controlled according to the result.

The flow rate is controlled by using the detection voltage VP of the pressure sensor 75 for the following reason. The flow rate Q of the fluid such as hot water flowing through the flow passage (the hot water flow passage 62 in this embodiment) is a unit correction constant K in consideration of the viscosity of the fluid and the like.
And the flow coefficient CV and the pressure difference ΔP obtained by subtracting the atmospheric pressure P0 from the pressure P in the hot and cold water flow path 62 are expressed by the following equations. Q = K ・ CV ・ (△ P) ^1/2 = K ・ CV ・ (P-P0) ^1/2

The flow rate coefficient CV in this equation is a flow rate coefficient determined in advance by the water discharge form from each water discharge nozzle 24 to 27, that is, the size and shape of the hole of each water discharge nozzle (see FIG. 6). Further, the pressure difference ΔP obtained by subtracting the atmospheric pressure P0 from the pressure P in the hot and cold water flow path 62 is obtained through a predetermined conversion formula f (VP) which is uniquely determined by using the detected voltage VP of the pressure sensor 75 as a variable. It is not out of the range. Therefore, the above equation becomes Q = K · CV · (f (VP))
It can be transformed to ^1/2 .

Therefore, the flow rate can be indirectly compared by comparing the set water discharge amount conversion voltage VMN obtained by converting the set water discharge amount of each level value into the sensor output voltage and the detection voltage VP of the pressure sensor 75. The flow rate can be controlled.

In comparing the set water discharge amount conversion voltage VMN with the detection voltage VP of the pressure sensor 75 to control the flow rate, first, the detection voltage VP is set to the set water discharge amount conversion voltage VMN by the allowable measurement error voltage α. It is determined whether the applied voltage is equal to or higher than the applied voltage (S413). This allowable measurement error voltage α is due to variations in the detection accuracy in manufacturing the pressure sensor 75, and the detection voltage VP of the pressure sensor 75 that accompanies abrupt vertical movement of the shower head A when the shower head A is held by hand. It is predetermined in consideration of fluctuations and the like.

Here, if it is determined that the detected voltage VP is equal to or higher than the voltage obtained by adding the allowable measurement error voltage α to the set water discharge amount conversion voltage VMN, the total inflow amount of water and hot water from each inflow pipe, that is, the flow rate is determined. The drive amount of each actuator 5, 6 for reducing the amount by a predetermined amount is calculated, and each flow rate adjusting valve 3, 4 is driven via each motor driver 7d, 7e (S41).
5). Then, this routine ends. Of course, when the flow rate adjusting valves 3 and 4 are driven, the flow rate ratio of water and hot water calculated in S300 is maintained. Thus, thereafter, the water discharge amount is corrected to be reduced. As the unit for reducing the flow rate, a different value is prepared for each water discharge nozzle.

On the other hand, if a negative judgment is made in S413, it is judged whether or not the detected voltage VP is equal to or lower than the voltage obtained by subtracting the allowable measurement error voltage α from the set water discharge amount conversion voltage VMN (S4).
17). Here, if a negative determination is made, together with the determination at S413, it can be determined that the detection voltage VP is within the allowable range centered on the set water discharge amount conversion voltage VMN. Therefore, the flow rate adjustment process is terminated here because further flow rate adjustment is not necessary, and the process proceeds to each process of control parameter correction / abnormality treatment based on the detected voltage VP which is the latter half of the flow rate control. In this way, by the process of S417, the water discharge from the shower head A is continued while maintaining the water discharge amount (the set water discharge amount) before.

However, if an affirmative decision is made in S417, the drive amount of each actuator 5, 6 for increasing the total inflow amount of water and hot water from each inflow pipe by a predetermined amount is calculated, and each flow rate adjusting valve 3, 4 is driven via the respective motor drivers 7d and 7e (S420). Then, this routine ends. In this way, the amount of water discharged is increased and corrected thereafter.
The unit for increasing the flow rate is the same as the unit for decreasing the flow rate, and a different value is prepared for each water discharge nozzle.

In the correction / abnormality treatment of the control parameters subsequent to the above flow rate adjustment, as shown in the flowchart of FIG. 24, first, the flow rate map regarding the target water discharge nozzle m of the main body side information read in S200 is read (S43).
0). For example, if the target water discharge nozzle m is the water discharge nozzle 27, the flow rate map regarding this water discharge nozzle 27 is read.

Next, from the flow rate coefficient CVm (subscript m: any of the water discharge nozzle distinction symbols A to D) in the read flow rate map and the output (rotation speed N) of the water amount sensor 8, the hot and cold water discharge connection pipe 10 is obtained. The flow rate conversion voltage VQ is calculated by converting the flow rate in the above into a voltage.

In calculating the flow rate conversion voltage VQ, the following conversion equation was used in consideration of dimensions such as the flow rate coefficient CVm and the output of the water amount sensor 8 (rotation speed N). VQ = kv (N / CVm) ² where kv is a proportional constant.

The flow rate coefficient CVm is a coefficient predetermined according to the size of the water discharge hole of each water discharge nozzle. Also,
Since the present process (S433) is a process when the flow rate is stable after the process of S417 (continuation of water discharge at the set water discharge amount), the output of the water amount sensor 8 (rotation speed N) is the flow rate in the hot and cold water discharge connection pipe 10. The output reflects. Therefore, the flow rate conversion voltage VQ obtained by converting the flow rate in the hot and cold water discharge connection pipe 10 by the above conversion formula can be used as a control parameter in the following process.

Thereafter, it is determined whether or not the flow rate conversion voltage VQ is within the allowable conversion voltage range (MIN: VmL, MAX: VmH) specified for each target water discharge nozzle m, that is, for each water discharge mode. (S437). This allowable conversion voltage range corresponds to an appropriate water discharge amount range that does not give a feeling of strangeness to a user who is bathing water even if the water discharge amount fluctuates while continuing water discharge in a certain water discharge form. And is stored in the ROM incorporated in the MPU 7a for each water discharge form.

That is, the process of S437 is to judge whether or not the water spouting continuing in the water spouting form corresponding to the target water spouting nozzle m is within the proper water spouting amount range in the water spouting form. Is.

Here, if a negative determination is made, that is, if the water discharge amount is not within the proper water discharge amount range, the shower hose h is clogged by foreign matter or the like, the water spout hole of the water spout nozzle is clogged, or water is spouted by a crack or the like. If an unexpected situation such as deformation of the hole has occurred, an abnormality is notified (S440).
Specifically, a control signal is output to the speaker 166 of the operation panel unit PP to notify it by voice or the display 151.
A control signal is output to display a predetermined character string to notify that effect. Further, the water discharge amount indicator 152, the water discharge temperature indicator 15
3 etc. are intermittently turned on to notify.

After that, both flow rate adjusting valves are fully closed (S445) to stop the water discharge until such a situation is resolved, and this routine is once terminated.

On the other hand, when it is determined in S437 that the water discharge form corresponding to the target water discharge nozzle m is within the proper water discharge amount range, the detection voltage VP of the pressure sensor 75 and the flow rate conversion voltage are determined. From VQ, the absolute value of the difference between the two voltages is calculated as the flow rate conversion voltage error Z (S45).
0). Then, it is determined whether or not the calculated flow rate conversion voltage error Z is a value within the allowable range β (S453).

The detection voltage VP of the pressure sensor 75 reflects the actual flow rate (water discharge amount) in the shower head A,
Since the flow rate conversion voltage VQ reflects the flow rate in the hot and cold water discharge connection pipe 10, the flow rate converted voltage error Z is the flow rate (water discharge amount) in the shower head A and the hot and cold water discharge connection pipe 1.
It corresponds to the difference with the flow rate at 0. Therefore, the determination in S453 is to determine whether the flow rate difference between the actual flow rate (water discharge amount) in the shower head A and the flow rate in the hot water discharge connection pipe 10 is within the allowable range.

Here, the flow rate conversion voltage error Z is within the allowable range β.
If it is determined to be within the range, since the flow rate difference is within the allowable range, it is determined that there is no problem in continuing the water discharge from the shower head A, and this routine is ended.

However, if it is determined in S453 that the flow rate conversion voltage error Z is outside the allowable range β, the flow rate coefficient CVm of the pressure sensor 75 is set so that the flow rate conversion voltage error Z falls within the allowable range β. The updated flow rate coefficient CVm0 is updated using the detected voltage VP and the output (rotation speed) of the water amount sensor 8 and rewritten (S457, S460).

That is, in S457, the updated flow rate coefficient CVm0 is calculated from the following equation considering dimensions, and in S460, the calculated updated flow rate coefficient CVm0 is rewritten as a new flow rate coefficient CVm of the flow rate map for the target water discharge nozzle m. . CVm0 = kC · (N / (f (VP)) ^1/2 )

Next, the flow coefficient CVm is updated to the updated flow coefficient CVm0.
Accordingly, the total water discharge amount conversion voltage Vmi (subscript m: any of the water discharge nozzle discrimination symbols A to D, subscript i: each level value of the set water discharge amount) in the flow rate map relating to the target water discharge nozzle m , Flow rate coefficient CVm to updated flow rate coefficient CVm
It is corrected by the following equation in consideration of the rate of change to 0 and the dimension, and this is rewritten to the discharge water conversion voltage of the flow rate map (S46).
3). Then, this routine is terminated via this S463. Corrected water discharge conversion voltage = Vmi · (CVm / CVm0) ²

The water discharge routine for performing such processing is
As already mentioned, it is executed every 250 ms, so
Flow rate control consisting of the above-mentioned various processes based on the main body side information including all the information (press information of each switch, information of water volume, temperature, etc.) necessary for performing the water discharge in the water discharge form desired by the user. Is also done every 250 ms.

Next, a communication routine for exchanging data between the main controller 7 and the sub controller 67 will be described. This communication routine includes a main controller communication routine that is interrupted by the MPU 7a every 125 ms while the power button 150 is on, and a sub routine that receives an interrupt signal from the main controller communication routine. It is composed of a sub-controller side communication routine which is executed on the controller 67 side each time, and performs each processing shown in the flowchart of FIG.

In the main controller side communication routine,
First, the main body side information stored in S207 of the water discharge routine is read (S500), and then the target water discharge nozzle related data is synthesized from the read main body side information (S53).
0). The target water discharge nozzle-related data has a data structure of a plurality of bits, and is configured by assigning to each bit data relating to the target water discharge nozzle (data necessary for switching the current water discharge nozzle to the target water discharge nozzle).

Then, the combined multi-bit target water discharge nozzle related data is serially converted and the converted data is transmitted (S540). After that, the head information request signal for requesting the transmission of the head information is transmitted from the sub controller 67 (S550), and this routine is once ended.

In the serial conversion in S540, an interrupt signal (1
Bit), the start signal (1 bit), and the transmission source (in this case, the main controller 7) that distinguishes the ID signal (2
Bit) etc. is added to make the transmission data of a predetermined number of bits,
The transmission data is serially converted as shown in FIG.

That is, the interrupt bit is converted to the first transmission bit, the start bit is the second transmission bit, the ID bit is the third and fourth transmission bits, and serial conversion is performed. To do. Then, the transmission data after serial conversion is converted into MPU on the main controller 7 side.
7a to the interrupt terminal of the MPU 67a on the sub controller 67 side directly via the I / O 7b and one of the control wires 89b.

This transmission method is a start-stop synchronization method, and each data bit length is 100 μsec in total.

Sub-controller 6 that received this data
In the MPU 67a of No. 7, an external interrupt occurs due to the interrupt bit in the transmission data (reception timing of FIG. 25), the processing up to that point is temporarily interrupted, and the sub-controller side communication routine shown in FIG. 24 is executed. .

That is, when the sub-controller side communication routine starts in response to an external interrupt, it waits for the input of the start bit (L level) following the interrupt bit, and waits for 150 μsec after inputting the bit (reception timing). (Reception timing), and thereafter, data is input every 100 μsec, and this is input to the RAM with built-in MPU 67a.
(S600).

Thus, the data reception is continued until the stop bit (L level) is input at the reception timing. If the stop bit input cannot be confirmed at the reception timing, a stop bit error is set. In addition, the parity check is performed with the input data immediately before the stop bit (L level), the input data is adopted if OK, and the parity check error is set if NG.

Thereafter, in the sub controller side communication routine, S5 in the main controller side communication routine is executed.
It waits for the input of the head information request signal transmitted at 50 (S610). When this request signal is input, the head information stored in the RAM incorporated in the MPU 67a is read by a head information setting routine described later (S620), and a plurality of data contained in this head information is serially converted (6
30). This serial conversion is performed by adding an ID signal (2 bits) or the like for distinguishing the transmission source (in this case, the sub controller 67), similar to the processing in S540, and the head information data is replaced with the target nozzle related data. Used.

As will be described later, the head information includes data relating to the current water discharge nozzle M, detected voltage VP of the pressure sensor 75, data relating to water discharge execution or water stoppage from the shower head A, and target water discharge nozzle m. Data and are included.

Next, the transmission data after serial conversion is converted into
From the MPU 67a on the sub controller 67 side to the I / O 67
b, and the electric wire for control 89b, another one is directly transmitted to the interrupt terminal of the MPU 7a on the main controller 7 side (S6
40) and terminates the sub-controller side communication routine.

On the other hand, the MPU 7a of the main controller 7
Then, an external interrupt occurs when the head information data including the interrupt bit and the ID bit and serially converted is received.
The head information receiving routine shown in FIGS. 25 and 27 is executed by interruption.

In this head routine receiving routine, the transmitted head information data is received and temporarily stored (S560), and based on this head information data, the data relating to the predetermined item of the main body side information is updated / stored ( S5
70). In S570, as shown in FIG. 27, it is determined whether or not the shower selector switch 74 has been operated based on the head information data (S572), and if a negative determination is made, no processing is required and the head routine reception routine is temporarily terminated. To do.

If an affirmative decision is made in S572, it is determined that the user desires to switch the water discharge mode based on the operation of the shower selector switch 74, and the data relating to the target water discharge nozzle m in the main body side information is updated and stored. (S57
4).

Next, it is judged whether or not the shower water discharge switch 73 is operated based on the head information data (S5).
76), if a negative decision is made, it is concluded that no processing is necessary and this routine is once ended.

If an affirmative decision is made in S576, it is assumed that the user desires to execute water discharge or change to water stop based on the operation of the shower water discharge switch 73, and the data on the water discharge from the shower head A in the main body side information. Is updated and stored (S578). That is, if the data related to the water discharge from the shower head A in the main body side information until then is water discharge execution data, it is regarded as water stop data,
If it is water stop data, it is treated as water discharge execution data.

In this way, the head routine receiving routine in the main controller 7 ends, and the data relating to the predetermined item of the main body side information is updated.

That is, every time the main controller side communication routine is executed every 125 ms, the head information is updated in the MPU 7a (S560), and each time the head routine receiving routine is executed, the MPU 7a is executed.
Since the data relating to the predetermined item of the main body side information is updated at (S574, S578), S2 of the water discharge routine is performed.
00 and S205, the main body side information and the head information read at each time are the latest data. As a result, the water discharge routine uses the data included in the latest main body side information and head information as control parameters in various processes.

Next, the control performed on the sub controller 67 side in addition to the sub controller side communication routine will be described. On the sub controller 67 side, head information setting control (routine) for setting head information from the pressure sensor 75 in the shower head A, the shower water discharge switch 73, etc., and the target water discharge nozzle to the water discharge window 3
The water discharge nozzle indexing control (routine) for indexing the water discharge nozzles to reach 0 is repeatedly executed at a predetermined cycle. Each of these routines is executed at each interrupt cycle as described later,
Considering that the interrupt timings overlap, the priority order of execution is determined in the order of the head information setting routine and the water discharge nozzle indexing routine. As described above, the sub-controller side communication routine is forcibly executed by temporarily interrupting the head information setting routine and the water discharge nozzle indexing routine each time by external indexing.

The head information setting routine is executed every 15 ms while the power is being supplied via the power supply circuit 7c of the main controller 7.
Each process shown in the flowchart of FIG. 28 is performed.

First, the head information based on the pressed states of the shower water discharge switch 73 and the shower changeover switch 74 in the shower head A and the sensor output from the potentiometer 65 and the pressure sensor 75 is read (S70).
0). Specifically, from the output of the potentiometer 65,
The current water discharge nozzle M facing the water discharge window 30 is specified, either the water discharge execution from the shower head A or the water stop is specified from the switch output of the shower water discharge switch 73, and the pressing operation of the shower changeover switch 74 is further specified. The target water discharge nozzle m is specified based on the
Is read as head information together with the detected voltage VP.

The water discharge from the shower head A or the water stop is performed every time the shower water discharge switch 73 is pressed.
It is alternately specified by the PU 67a. Further, the target water discharge nozzle m is specified based on the number of times the shower switch 74 is pressed and the current water discharge nozzle M. That is, every time the shower changeover switch 74 is pressed once, the water discharge nozzle next to the current water discharge nozzle M along the rotation direction of the rotary water discharge body 23 becomes the target water discharge nozzle m. For example, when the water discharge nozzle 24 is the current water discharge nozzle M,
When the shower changeover switch 74 is operated once, the water discharge nozzle 25 becomes the target water discharge nozzle m, and when the shower changeover switch 74 is twice, the water discharge nozzle 26 becomes the target water discharge nozzle m, and when the shower change switch 74 is three times, the water discharge nozzle 27 becomes the target water discharge nozzle m (FIG. 6). reference). That is, every time the shower changeover switch 74 is pressed, the target water discharge nozzle m is sequentially fed from the current water discharge nozzle M and specified.

After that, the read head information is MP-processed.
The RAM in the U67a is updated to a predetermined address and written (S710), and this routine is once ended.

That is, by executing the above-mentioned head information setting routine, the head information based on each switch output and sensor output in the shower head A is updated and stored every 15 ms. The head information is transmitted to the main controller 7 and used for the various controls described above.

Next, a water discharge nozzle indexing routine for indexing the water discharge nozzle will be described. This water discharge nozzle indexing routine is executed every 2 ms while the power is turned on via the power supply circuit 7c of the main controller 7, and performs each process shown in the flowchart of FIG. .

First, the target water discharge nozzle m is read in the transmission data from the main controller 7 stored in S600 of the sub-controller side communication routine (S80).
0) and reading of the current water discharge nozzle M in the head information stored in S710 of the head information setting routine (S).
And 810) are sequentially executed in this order. Then, it is determined whether the read target water discharge nozzle m and the current water discharge nozzle M match (S820).

If it is determined that the target water discharge nozzle m and the current water discharge nozzle M match, it is judged that indexing of the water discharge nozzle is not necessary, and this routine is once terminated without performing any processing.

On the other hand, if it is determined that the target water discharge nozzle m and the current water discharge nozzle M do not match, the detection voltage VP of the pressure sensor 75 is read from the head information (S83).
0) Next, it is judged whether or not the water discharge nozzle can be indexed by comparing the read detection voltage VP with the allowable minimum voltage VL0 allowed for indexing the water discharge nozzle (S840). ).

This allowable minimum voltage VL0 is set in order to smoothly and promptly index the water discharge nozzle in the inflow path of the hot water, and also to drive the geared motor 66 under a low load. It was decided in consideration. As a result, the pressure sensor 75 in the hot and cold water flow path 62
By comparing the detected voltage VP with the minimum allowable voltage VL0, it is determined whether or not the water discharge nozzle can be indexed by the rotational drive of the geared motor 66.

Here, the detection voltage VP is the allowable minimum voltage VL0.
If it is determined that the voltage exceeds, the hot and cold water at this point passes through the hot and cold water flow path 62 to reach the crimp seal board C2, and the inflow pressure of the hot and cold water is applied to the lower surface of the crimp seal board C2. Therefore, since it is necessary to drive the geared motor 66 to rotate under an excessive load, this routine is temporarily terminated without any processing because it is considered that the indexing of the water discharge nozzle will be hindered.

On the other hand, if it is determined that the detected voltage VP is equal to or lower than the allowable minimum voltage VL0, the hot and cold water reaches the crimp seal board C2 and inflow pressure is applied to the lower surface thereof at this time as well.
Its pressure value is low. Therefore, although the hot water flows into the shower head A, the geared motor 66 can be driven under a low load to start the indexing of the water discharge nozzle. In response to this determination, a control signal is output to the motor driver 67e to drive the geared motor 66, the water discharge nozzle is indexed (S850), and this routine is ended.

In this way, the water discharge nozzle indexing routine is performed for 2 m.
By repeatedly performing every s, the pressure sensor 7
Only when the load of the geared motor 66 is small based on the comparison between the detected voltage VP of 5 and the allowable minimum voltage VL0, the geared motor 66 is driven to rotate the water discharge until the target water discharge nozzle m and the current water discharge nozzle M match. The body 23 continues to rotate. As a result, the target water discharge nozzle m makes its water discharge hole face the water discharge window 30 and the indexing is completed. For example, when the current water discharge nozzle M is the water discharge nozzle 24 and the target water discharge nozzle m is the water discharge nozzle 26 (see FIGS. 4 and 6), the water discharge nozzle 26 rotates its water discharge hole until it faces the water discharge window 30, that is, rotation. Until the water discharge body 23 rotates 180 degrees, the geared motor 66
Will be driven.

Here, the state of the detection signal output from the potentiometer 65, the state of driving the geared motor 66, the state of water spouting from the water spouting nozzle, and the like will be described in association with each other. For convenience of description, a case where the current water discharge nozzle M is the water discharge nozzle 24 (spray) and the target water discharge nozzle m is the water discharge nozzle 26 (foam) will be described with reference to FIG.

As shown in the figure, during the water discharge from the water discharge nozzle 24 in the water discharge form of spray, that is, while the current water discharge nozzle M is the water discharge nozzle 24 (spray) in the main body side information and the head side information. , Foam specification button 1
When 59 is pressed or the shower water discharge switch 73 is pressed twice to instruct to switch the water discharge mode to foam, the main body side information is updated in S120, the head side information is updated in S710, and S574 and S578. After updating the main body side information by the target water discharge nozzle m,
6 (foam).

Therefore, a negative determination is made in S235, the water is drained by opening the water solenoid valve 11b (S240), and then the shower solenoid valve 11a is closed (S245).
Due to this, the water spouting from the shower head A will eventually stop.
Then, while the water discharge from the shower head A is stopped,
When the detected voltage VP of the pressure sensor 75 matches the allowable minimum voltage VL0, the index of the water discharge nozzle is permitted (S84).
0), a rotation drive signal is output to the motor driver 67e (S850). As a result, the geared motor 66 starts rotating.

When the geared motor 66 starts rotating in this way, the rotary water discharger 23 and the brush support 10 are also moved with this.
Since 1 also rotates integrally, the circular arc circuit pattern 115b and the annular circuit pattern 114 via the brush body 103
And the electrical connection between the protruding circuit pattern 111b and the annular circuit pattern 114 are cut off.

After that, the rotation drive signal is continuously output to the motor driver 67e, the geared motor 66 continues to rotate, and eventually the circular arc circuit pattern 115d and the annular circuit pattern 114 are electrically connected to each other via the brush body 103. The protruding circuit pattern 111d that defines the stop position (indexing completion position) of the water discharge nozzle and the annular circuit pattern 114 are electrically connected. Therefore, the target water discharge nozzle m and the current water discharge nozzle M are completely coincident with each other due to the conduction of the two circuit patterns and the conduction between the circular circuit pattern 115d and the ring-shaped circuit pattern 114 preceding the circuit patterns S235 and S820.
Will be judged by. That is, the water discharge nozzle 26 (foam) which is the target water discharge nozzle m has reached the stop position.

It should be noted that each arc circuit pattern 115a-11.
5d is made wider than the protruding circuit pattern 111a, etc., and the arc circuit pattern 115d and the annular circuit pattern 114 are connected prior to the connection between the protruding circuit pattern 111d and the annular circuit pattern 114. This is because the MPU 67a recognizes that it has rotated to the vicinity of the output position, and avoids erroneous detection due to superposition of noise on the signal line connected to the potentiometer 65.

Upon receipt of this judgment, the motor driver 67e
The brake signal is output to the forcible stop of the geared motor 66, and the water discharge nozzle 26 (foam) reaching the stop position
To the stop position completely. In response to this, the shower solenoid valve 11a is opened (S250), and water is discharged from the shower head A in the form of foam discharge. Further, after the closing water solenoid valve 11b is closed (S255), the stopping water that has been performed until then is stopped. And shower head A
When the water discharge (foam) from the pressure sensor 75
Of the motor driver 67e until the detection voltage VP exceeds the allowable minimum voltage VL0, indexing of the water discharge nozzle thereafter is prohibited (S840), and a new water discharge mode switching instruction is issued.
The rotation drive signal is not output to.

When the indexing of the water discharge nozzle 26 which is the target water discharge nozzle m is completed, the main body side information is updated in S120, the head side information is updated in S710, and S57.
4, after the main body side information is updated in S578, the water discharge nozzle 26 (foam) is set as the current water discharge nozzle M.

According to the water discharger TS of this embodiment having the above-mentioned structure, the following effects can be obtained.

The water discharger TS according to the present embodiment has a hot water flow path 62.
The inflow pressure of the hot and cold water in the hot and cold water flow path 62 is detected by the pressure sensor 75 provided at the position, and the detected voltage VP is used as the control parameter. This detection voltage VP has an extremely strong correlation with the flow rate of the hot and cold water which passes through the hot and cold water flow passage 62 of the shower head A and reaches each of the water discharge nozzles while the measurement position is inside the hot and cold water flow passage 62. It can be said that this is a control parameter that accurately reflects the flow rate change with good responsiveness.

Therefore, firstly, by using the detection voltage VP of the pressure sensor 75, the actual water discharge amount Q discharged from each water discharge nozzle of the shower head A can be accurately obtained by the following equation. Q = K · CV · (f (VP)) ^1/2 Note that f (VP) is the pressure sensor 7 as described above.
5 is a predetermined conversion formula that is uniquely determined by using the detected voltage VP of 5 as a variable.

Second, since the detection position of the detection voltage VP is the shower head A, the fluid inflow pressure in the hot and cold water flow path 62 reflects the fluctuations due to the daily up and down movement of the shower head A. It is possible to accurately measure the actual water discharge amount Q discharged from each water discharge nozzle regardless of the vertical movement of the shower head A. Further, since the detection voltage VP is not affected by the bending of the shower hose h, the actual water discharge amount Q discharged from each water discharge nozzle can be accurately measured regardless of the bending of the shower hose h.

A set water discharge amount conversion voltage VMN corresponding to a predetermined set water discharge amount and a detection voltage V of the pressure sensor 75.
Compared with P, the detected voltage VP is equal to the set discharge water conversion voltage VMN
If it is within the permissible range centered on, the water discharge from the shower head A is continued with the previous water discharge amount (set water discharge amount),
If it is outside the allowable range, the amount of water discharged is increased or decreased. Moreover, the flow rate control is accompanied by such an increase / decrease correction of the water discharge amount based on the information on the main body side including all the information necessary for discharging water in the water discharge form desired by the user, and the update / storage of the main body side information. And repeated.

Therefore, thirdly, the water discharge amount after the flow rate adjustment,
That is, the amount of water actually discharged from the shower head A can be accurately matched with the preset amount of water discharge. That is, the flow rate adjustment accuracy can be improved. Moreover, since the flow rate control is performed in an extremely short cycle, the water discharge amount after the flow rate adjustment and the set water discharge amount can be accurately matched quickly.

Fourth, when the indexing of the water discharge nozzle which is the target water discharge nozzle m is completed, the flow rate adjustment for this water discharge nozzle, that is, the flow rate adjustment for the water discharge form detected by the shower head A is performed from that point. As a result, by simply operating the shower selector switch 74, it is possible to realize switching between the water discharge modes and water discharge with a water discharge amount that does not cause a sense of discomfort in accordance with the water discharge mode after switching. Furthermore, since the simple operation of pressing the switch is required, the usability of the shower head A can be improved. Also,
The pressure sensor 7 controls the flow rate of the discharged water after switching.
Since the detection voltage VP of 5 is used as a control parameter,
The water discharge in the water discharge form after the switching can be promptly started with an accurate set water discharge amount.

Fifthly, when the flow rate is adjusted with respect to the water discharge form after switching, the set water discharge amount (set water discharge amount conversion voltage VMN) which is the target flow amount of the flow amount adjustment is different for each water discharge form (see FIG. 23). Therefore, the water discharge amount in the water discharge form after switching can be made suitable for the water discharge form. For example, even when switching from the water discharge form of a spray having a relatively large water discharge amount to the water discharge form of a spot having a relatively small water discharge amount, the water discharge in the water discharge form of the spot after the switching is made relatively in accordance with the water discharge form of the spot. A small amount of water can be discharged.

Sixth, the set water discharge amount for each water discharge form is
Discharge amount increase instruction button 164, Discharge amount decrease instruction button 1
Since it can be set / changed by the operation of 65, the diversification of the water discharge amount in each water discharge mode after switching allows more comfortable discharge according to the user's preference for the strength of the water discharge. It is possible to easily obtain water discharge in the amount of water. Therefore, the usability of the shower head A can be further improved.

Seventh, when the water discharge nozzle is indexed and the water discharge mode is switched, when the detection voltage VP of the pressure sensor 75 becomes equal to or lower than the allowable minimum voltage VL0 allowed for indexing the water discharge nozzle, that is, When the inflow pressure of the hot water into the hot water flow passage 62 becomes equal to or lower than a predetermined pressure, the switching of the water discharge mode based on the drive control of the geared motor 66 is started. As a result, it is not necessary to wait until the water discharge from the shower head A is completely interrupted, so that the water discharge form can be switched quickly and smoothly. Moreover, an excessive load is not applied to the geared motor 66 for switching the water discharge mode. Therefore, through downsizing of the geared motor 66, the shower head A can be made compact and operability and usability can be improved.

Further, when the water discharge form from the shower head A is switched, first the opening water solenoid valve 11b is opened (S240).
Since the amount of hot water flowing in the shower head A is reduced at the same time as the instruction to switch the water discharge form from the shower head A is made, the detection voltage VP of the pressure sensor 75 is detected.
Can be lowered faster. Therefore, since the detected voltage VP falls below the allowable minimum voltage VL0 earlier, the water discharge form can be switched more quickly and smoothly.

Further, the following effects can be obtained. In general,
Even if it is determined that the amount of water discharged from the shower head A is within the appropriate amount of water discharge, the pressure sensor 7
5 detection voltage VP and output of water amount sensor 8 (rotation speed N)
The flow rate conversion voltage VQ that reflects the flow rate in the hot and cold water discharge connection pipe 10 calculated by the above method does not always match. This is for the following reason.

Since the flow passage area of the water discharge hole of the water discharge nozzle of the shower head A is usually small, fine dust or scales mixed in the hot water tend to adhere. That is, the shape, opening area, fluid resistance, etc. of the water discharge hole gradually change over time due to the unavoidable cause such as the adhesion of scales to the water discharge hole instead of the unexpected situation described in S440. As a result, the actual flow coefficient changes and the amount of water discharged from the water outlet also changes. Therefore, it is considered that there is a difference between the detected voltage VP of the pressure sensor 75 and the flow rate conversion voltage VQ. Specifically, when the flow coefficient changes due to clogging and the water discharge amount decreases, the detection voltage VP increases accordingly.

In the water discharger TS of this embodiment, the detection voltage V
The water discharge amount is increased / decreased and corrected until P is within the predetermined allowable range (allowable measurement error voltage α), and the actual water discharge amount from the shower head A based on the detected voltage VP and the set water discharge amount are within the predetermined allowable range. Match within. However, even if the water discharge amount is stabilized in this way, the following processing is performed. That is, if the difference between the detected voltage VP of the pressure sensor 75 and the flow rate conversion voltage VQ is outside the allowable range β, the flow rate coefficient CVm used to calculate the flow rate conversion voltage VQ that reflects the flow rate in the hot and cold water discharge connection pipe 10 is The updated flow coefficient CVm0 is updated using the detected voltage VP of the pressure sensor 75 and the output (rotation speed) of the water amount sensor 8.

As a result, through the correction of the flow coefficient CVm,
The flow rate conversion voltage VQ from the next time onward is measured by the pressure sensor 7
As the voltage reflecting the detection voltage VP of 5 and the output (rotation speed) of the water amount sensor 8, the actual flow rate (water discharge amount) in the shower head A and the flow rate in the hot and cold water discharge connection pipe 10 can be made more equal. In other words, the change over time in the water discharge amount caused by the inevitable cause such as the adhesion of scales is also taken into account by correcting the flow coefficient CVm, and the actual water discharge amount from the shower head A and the hot water discharge connection pipe are taken into consideration. The flow rate at 10 can be matched.

In addition to the correction of the flow rate coefficient CVm, the total discharge amount conversion voltage Vmi of the flow amount map corresponding to the set discharge amount is set.
Since (subscript m: any of the water discharge nozzle discrimination codes A to D, subscript i: each level value of the set water discharge amount) is corrected in consideration of the rate of change from the flow coefficient CVm to the updated flow coefficient CVm0, It is possible to match the actual water discharge amount from the shower head A and the set water discharge amount more accurately and in consideration of the above-described change over time of the water discharge amount.

In addition, since the correction of the flow coefficient CVm and the correction of the total water discharge amount conversion voltage Vmi of the flow map are performed for each water discharge form, the actual water discharge amount from the shower head A and the flow amount in the hot and cold water discharge connection pipe 10 are obtained. And the agreement between the actual water discharge amount from the shower head A and the set water discharge amount,
This can be achieved for each water discharge form.

Further, for example, an unexpected situation such as clogging of the shower hose h due to entry of foreign matter, clogging of the water discharge hole of the water discharge nozzle, and deformation of the water discharge hole due to cracks may occur. However, according to the water discharger TS of the present embodiment, the detection voltage VP of the pressure sensor 75 that accurately reflects the actual amount of water discharged from the shower head A can be used to detect the occurrence of such an unexpected situation, such as clogging. It can be detected in the early days when it occurs.

As a result, it is possible to promptly take action (close the flow rate adjusting valve) based on the abnormality. Furthermore, it is possible to prevent the difference between the actual water discharge amount from the shower head A and the set water discharge amount from being significantly widened to prevent rapid flow rate adjustment, and to prevent an excessive load from being applied to the shower head A and the like. You can Further, such abnormality detection is possible for each water discharge form.

In addition to this, the water discharger TS of this embodiment is
The following effects are achieved with respect to data communication. (1) When performing water discharge control such as flow rate control, when various data are transmitted between the main controller 7 and the sub controller 67, a plurality of types of control data are serially converted in both controllers that are data transmission sources. Then, the data is transmitted via the two control electric wires 89b. That is, from the main controller 7, from the water discharge nozzle indexing permission data for instructing the rotation control of the geared motor 66 in the sub controller 67, various data necessary for switching the current water discharge nozzle M to the target water discharge nozzle m, and the like. The target water discharge nozzle related data is converted to serial and transmitted. Further, the sub-controller 67 serially converts head information composed of a plurality of types of data such as data relating to the current water discharge nozzle M, the detected voltage VP of the pressure sensor 75, data relating to shower water discharge execution or water stoppage, and transmits. Then, the controller on the side of receiving the transmission converts each data into a signal necessary for processing and performs the various controls described above.

Therefore, between the water discharger main body side and the shower head A side, which are in the positional relationship separated by the shower hose h, the number of control signal communication wires conventionally required for each processing function is It can be two. As a result, from the main controller 7 to the sub controller 67 in the shower head A, even if the control electric wires 89b are embedded and wired along the shower hose h along the shower hose h, the number of embedded electric wires is small. Therefore, the flexibility and operability of the shower hose h are not impaired, and the handling of the shower head A is not hindered. That is, it is possible to perform data communication between the water discharger body side and the shower head A side while maintaining the operability of the shower head A.
Further, even if the connection is performed in the limited space at the lower end of the shower head A, the connection state of the electric wires can be ensured due to the small number of electric wires, and the reliability in data transmission can be improved.

(2) When transmitting data, the transmission data to which the 2-bit ID signal for distinguishing the transmission source (main controller 7, sub-controller 67) is added is serially converted and transmitted. Can immediately recognize the source of data.

As a result, when the data receiving side, for example, the main controller 7 transmits different data to the data transmission source after receiving the data, when the contents of the data are decoded and the reply destination is recognized. Compared with the above, it is possible to reduce the processing load of the main controller 7 and improve the processing efficiency.

In particular, when a data transmission destination is provided in addition to the sub controller 67 of the shower head A, as shown in FIG. 30, for example, as shown in FIG. When the controllers nS and rS for performing are provided, the above-mentioned effects become remarkable.

(3) The electric wire bundle 89 is moved along the center of the lower end hole 76, which is the center of rotation of the shower head A, into the equipment storage space 6
Even if the shower head A is rotated with respect to the shower hose h, the twisting load applied to the wire bundle 89 can be reduced because the shower head A is rotated into the shower head h. Therefore, it is possible to avoid damage to the electric wire bundle 89 and improve the reliability of transmission of electric signals. Further, since it is not necessary to provide a so-called slack portion for absorbing a large twist in the wire bundle 89 around the hose joint body 81, the entire shower head A including the hose joint body 81 is made compact and held by hand. Improve usability in case.

(4) The stopper pin 81a and the groove 62a restrict the range of rotation of the shower head A to approximately 360 degrees and limit the twist of the wire bundle 89. Therefore, damage to the wire bundle 89 due to this twist is prevented. It can be avoided more reliably. Therefore, the reliability of data transmission can be further improved.

Further, the water discharger TS of this embodiment has the following effects. In forming the hot and cold water flow passage 62 in the shower head body D, the hot and cold water flow passage 62 is formed along the inner peripheral wall of the head case 61 from the upper end to the lower end of the head case 61, and the formation position is set to one of the inner peripheral wall. The position was biased to the side of. As a result, it is possible to secure a sufficient flow passage area and to make the water discharged from the shower head A have no discomfort due to insufficient flow rate. In addition, the head case 61
A large part of the internal space including the center of the electric drive section 64 is used as a device storage space 63 for storing the electric drive unit 64, which enables the storage of various electric devices and allows the electric devices to be arranged with a margin in the assembly work. Can be made easy.

Rotating water spouting body 23 for switching water spouting form
The electric drive unit 64 that rotationally drives the rotating water discharger 23 is hung from the rotating water discharger 23 via the rotating shaft 29. As a result, since the axial displacement of the rotary water discharger 23 and the electric drive unit 64 along the axis of the rotary shaft 29 is not caused, when the rotary water discharger 23 is rotated, the electric drive unit 64 is caused by the axial displacement. The load of can be reduced. In addition, power saving and downsizing of the drive motor can be achieved by reducing the load. Furthermore,
Even if a biased force is applied to the rotary spouting body 23 due to the inflow of hot and cold water and the rotating shaft 29 is tilted, the rotation transmission of the rotary spouting body 23 is not hindered, and the rotation of the rotary spouting body 23 is ensured. Switching, that is, switching of the water discharge form is possible.

On the outer peripheral surfaces of the potentiometer 65 and the reduction gear portion 66a constituting the electric drive portion 64, there are provided rotation preventing pieces 70 which engage with the engaging concave portions 71 of the inner peripheral wall of the head case 61 with a predetermined gap. . Therefore, although the electric drive unit 64 is suspended and supported by the rotary water spouting body 23, it can move up and down along the rotation axis direction and does not rotate. Drive unit 64
Don't let me wake you up. As a result, the rotation is reliably transmitted to the rotary water discharger 23, and the water discharge form can be switched accurately and surely.

When the hot water does not flow in, a stopper flange 68 fixed to the rotating shaft 29 with a slight gap between it and the lower surface of the upper side wall 69 is provided on the upper end surface of the electric drive section 64 and the head case 61. It is provided between the side wall 69. As a result,
Even if the hot water flows into the shower head A and the rotary water discharger 23 and the electric drive section 64 float up due to the flow pressure, the stopper flange 68 abuts the upper side wall 69 of the head case 61, and electric power higher than that is generated. It is possible to avoid the floating up of the mechanical drive unit 64 along the rotation axis. For this reason, tensile stress along the axial direction is not applied to the rotary shaft 29 below the stopper flange 68, and the electric drive unit 6 is prevented.
The load due to this stress on 4 is avoided and the electrical drive 64
Can be suitably driven.

In sealing the rotary water discharger 23 on its bottom surface, a pressure-bonding seal board C2 is slidably incorporated in the circular recess 42 of the water discharge seal base C1 along the inflow direction of hot water and has the seal member 50 on the upper surface. Was used. When hot and cold water flows in, the pressure sealing plate C2 slides due to the inflow pressure and is brought into close contact with the bottom surface of the rotary water discharger 23 with the upper surface thereof as the pressure receiving surface, and the sealing member 50 is the peripheral surface of the nozzle communication passage 28 on the bottom surface of the rotary water discharger 23. It is pressed against and has a sealing function. On the other hand, when the hot water does not flow in, no pressure is applied, so that the pressure-bonding seal board C2 sinks into the bottom of the circular recess 42 and does not adhere to the bottom surface of the rotary water discharger 23. As a result, the rotation of the rotary water discharger 23, which is performed when the hot water does not flow in, does not rotate.
3 The friction resistance between the bottom surface and the upper surface of the seal portion C is small, so that the friction resistance is smooth. Therefore, it is possible to reduce the load on the geared motor 66 through the smooth rotation of the rotary water discharger 23.

By avoiding the axis deviation (), rotating the water spouting body 23 under low frictional resistance (), and ensuring a sufficient volume of the equipment storage space 63 (), the load on the electric drive section 64 can be reduced. It is also possible to use a battery as the drive source and store this battery in the device storage space 63 through power saving and size reduction of the motor.

Since the potentiometer 65 is mounted coaxially with the geared motor 66 via the rotary shaft 29, the positioning accuracy and the control reliability can be improved.

A water passage 86 that connects the shower hose h and the hot water passage 62 is formed in the hose joint body 81 with a large number of holes (6
Since the holes are provided and the effective passage area is the same as that of the hot and cold water flow passage 62, it is possible to avoid an inadvertent pressure fluctuation when hot and cold water flows into the hot and cold water flow passage 62. Therefore, the detection error in the detection voltage VP of the pressure sensor 75 can be reduced.

Since the cord passage 88 serving as the wiring route for the bundle of electric wires 89 is formed so as not to interfere with the water passage 86, the wiring route for the bundle of electric wires 89 and the hot and cold water flow passage are separated from each other to prevent leakage and to improve safety. Can be improved.

Next, another embodiment of the present invention will be described. In the water discharge device of the other embodiment, since the processing contents in each of the routines described above are different,
The different processing contents will be described. In this explanation, the reference numerals used in the above embodiment are used for the control target equipment and the like.

First, the different processing contents will be described. The water discharging apparatus of the other embodiment is different in that the flow rate is automatically changed in a constant cycle in each of the water discharging modes.

Specifically, in comparing the set water discharge amount reflected by the set water discharge amount conversion voltage VMN with the actual water discharge amount based on the detection voltage VP of the pressure sensor 75 (S413, S4).
17) Although the set water discharge amount is fixed as the preset water discharge amount, the set water discharge amount, which is a comparison target of the actual water discharge amount, may be changed every predetermined time. For example, even when the set water discharge amount is level 3, the set water discharge amount in the comparative calculation is changed to a set water discharge amount in a level value in a higher range, for example, the set water discharge amount of levels 3, 4, and 5 every predetermined time. Further, the water discharge form can be automatically changed. In this case, the water discharge nozzle may be indexed every predetermined time. When such control is performed, by using the detection voltage VP of the highly responsive pressure sensor 75 as a control parameter, it is possible to diversify the shower water discharge by finely changing the flow rate. Further, it is possible to obtain a so-called massage effect by varying the strength of water discharge.

Furthermore, another embodiment having the following structure can be adopted. That is, the processing of S570 in the head information receiving routine on the main controller 7 side of FIG. 25 is performed as follows.

Prior to S572 which is the first processing of S570, the detection voltage VP of the pressure sensor 75 received as one piece of data of the head information is set for each water discharge nozzle, that is, for each water discharge form for safety or usability. It is determined whether the voltage is within the allowable voltage range based on the water discharge amount range allowed from. If it is out of this range, the detection voltage VP
The abnormality is notified as described above. Also,
Along with this abnormality notification, data relating to shower water discharge in the main body side information (water discharge execution, water stop) is stopped regardless of whether or not the shower selector switch 74 is operated. In response to this, the water discharge routine (S210 of FIG. 21) determines that there is no water discharge destination, and the valve is fully closed (S213).

As a result, the water spouting from the shower head A in each water spouting form can be bathed only within a range permitted for safety or usability.

Further, the shower hose h, the hot and cold water flow passages 62, and the like have the same inner diameter, and the factors that determine the flow coefficient are items relating to each water discharge nozzle (shape of the water discharge hole, opening area, fluid resistance, etc.). It's not limited. For example, an open / close valve and a throttle may be provided in the path of hot water to serve as the defining factors of the flow coefficient, and even with the same water discharge form, water discharge with different flow coefficients can be performed.

In particular, with such a configuration, the following effects can be obtained by the above abnormality determination.
When the pipe is opened and closed using the on-off valve, the inflow of hot water causes
At the same time when the valve is opened, a pressure defined by the primary pressure and the flow coefficient of the flow path is generated in the shower head A, and this pressure is detected by the pressure sensor 75 of the shower head A.

If the detected voltage VP of the pressure sensor 75 thus detected is a high voltage, it is treated as an abnormal discharge of water as described above. As a result, the water spouting from the shower head A in each water spouting form can be bathed only within a range permitted from the viewpoint of safety or its usability. That is, the above-described abnormality determination is effective in the water discharge device that uses both the on-off valve and the throttle.

The embodiments of the present invention have been described above.
The present invention is not limited to such embodiments, and it goes without saying that the present invention can be carried out in various modes without departing from the scope of the present invention. Therefore, modified examples will be described below.

For example, the embodiment in which the water discharger TS according to the present invention is applied to the hot water supply system in the bathroom has been described.
Not limited to this, it can also be used for a so-called system kitchen that integrally controls the water supply in the kitchen. In addition, the shower head A is used as a water outlet having a water discharge mode switching mechanism.
Of course, the present invention can be applied not only to water spray nozzles for spraying water in the garden. Moreover, the nozzle is not limited to one connected to a hose or the like, and may be a nozzle fixed to a pipe such as a steel pipe or a curran so long as it has a water discharge function and a function capable of issuing various instructions from the water discharge port.

Further, unlike the present embodiment, it is not necessary to provide a plurality of faucet bodies such as the shower head A, the bathtub cullan rk, and the washing place curran n, and for example, the water discharger having only the showerhead A as the faucet body. Of course, it may be.

Further, in the water discharger TS of this embodiment, in comparing the set water discharge amount (flow rate) with the actual water discharge amount, the set water discharge amount conversion voltage VMN and the pressure obtained by converting the set water discharge amount into the sensor output voltage are used. The detection voltage VP of the sensor 75 is used,
The following configuration can also be adopted. That is, the flow rate map shown in FIG. 31 is used instead of the flow rate map shown in FIG. In this flow rate map, the set water discharge amount QMN of each level value (1 to 5) and the flow coefficient CVN are associated with each water discharge nozzle. Then, the set water discharge amount read from this flow rate map and the calculated actual water discharge amount may be compared, and the flow amount may be controlled according to the result. In addition, the subscripts M and N in the set discharge amount QMN and the flow coefficient CVN
Indicates any one of the reference signs A to D and the set level values 1 to 5 for distinguishing the water discharge nozzles of each water discharge mode, like the set water discharge amount conversion voltage VMN.

For example, the set water discharge amount is the water discharge amount of the level value 4, and the current water discharge nozzle M is the straight water discharge nozzle 2
If it is 4, the set water discharge amount QB4 and the flow rate coefficient CVB are read, and the set water discharge rate QB4, the actual flow rate Q0 calculated from the flow rate coefficient CVB, the detection voltage VP of the pressure sensor 75, the unit correction constant K, etc. Compare. This actual flow rate Q0 is
It is calculated from the following formula. Q0 = K ・ CVB ・ (f (VP)) ^1/2

In addition, in this embodiment, the water discharge nozzle is indexed to switch the water discharge mode.
As shown in FIG. 2, all the water discharge nozzles 24 to 27 may be exposed to the water discharge window 30, and the switching valve built in the shower head A may switch the inflow destination of the hot water to each water discharge nozzle. In this way, instead of indexing the water discharge nozzle, it is sufficient to drive the switching valve when the detection voltage VP of the pressure sensor 75 is equal to or lower than the allowable minimum voltage VL0, and the switching of the water discharge mode can be performed in a shorter time. You can

Further, although the shower head A and the operating portion P are provided with the controllers (main controller 7 and sub-controller 67) respectively, the controllers may be provided in only one of them.

Further, the known PD control or PID control can be applied to the drive control of the geared motor 66 to smooth the rotary operation of the rotary water discharger 23. Further, the power consumption of the geared motor 66 can be reduced by gradually increasing the drive speed when the geared motor 66 is started.

In addition, the electric equipment to be used is not limited to that used in the present embodiment, and an encoder or the like may be used instead of the potentiometer 65 to detect the position of the rotary water discharge body 23, or the geared motor 66. Alternatively, a stepping motor, a DC motor, an ultrasonic motor, or the like may be used, and the type of actuator does not matter.

In the detection of the rotational position of the rotary water discharger 23 by the potentiometer 65, the detection value (output voltage) of the potentiometer 65 when the four water discharge nozzles 24 to 27 exactly match the water discharge window 30 is, for example, Four
It can also be configured to have different voltage values such as V, 8V, 12V, 16V. In this case, each voltage value may be associated with each water discharge nozzle in advance, and it is possible to accurately detect which water discharge nozzle is facing the water discharge window 30 on the basis of the output voltage value. Is possible.

Further, whether or not each of the water discharge nozzles 24 to 27 faces the water discharge window 30 with its water discharge hole is detected by a separate sensor provided at a different position for each water discharge nozzle, such as a micro switch. , Each water discharge nozzle 24-2
Independent potentiometers may be arranged between the seven, and various structures for increasing the resolution of index detection can be adopted.

Further, the wire bundle 89 may be woven into the peripheral wall of the hose while being swung around the shower hose h as shown by the chain double-dashed line in FIG.

[0265]

As described above in detail with reference to the embodiments, the water discharge amount measuring device according to the first aspect of the invention first measures the water discharge amount from the water discharge port of the faucet body. The inflow pressure of the fluid passing through the fluid passage including the inner passage and reaching the water discharge port is detected in the inner passage. Then, based on the detected fluid inflow pressure, the amount of water discharged from the water outlet of the faucet body is calculated and used as the amount of water discharged.

This fluid inflow pressure has an extremely strong correlation with the flow rate of the fluid passing through the internal flow path to reach the water discharge port, and accurately reflects the change in the flow rate with good responsiveness. According to the water discharge amount measuring device of the first aspect, wherein the water amount is the water discharge amount from the water discharge port, the actual water discharge amount discharged from the water discharge port can be obtained accurately and in real time.

Moreover, since the detection position is inside the faucet body, the fluid inflow pressure in the internal flow path reflects the fluctuation due to the up-and-down movement of the faucet body. It is possible to accurately measure the actual amount of water discharged from the water discharge port.

In the water discharge amount measuring device described in claim 2, the measurement of the water discharge amount from the water discharge port of the faucet body similar to the water discharge amount measuring device described in claim 1 is selectively connected to the water discharge port. This is performed for each selected fluid channel. The inflow pressure of the fluid passing through the selected fluid flow path and reaching the discharge port has different flow coefficients.
That is of each the selected fluid flow path, also since the detection position is an internal passage of the faucet body, a very strong correlation with the flow rate of the fluid reaching the spout through the object to be selected fluid flow path Have a relationship. Further, the change in the flow rate of the fluid reflects the change in the flow rate accurately and with high responsiveness, and naturally reflects the change due to the vertical movement of the faucet body.

As a result , the selected selected fluid flow path is connected.
Based on the flow coefficient and the fluid inflow pressure in the internal flow path.
According water discharge amount calculated per a selected fluid flow path Zui the water discharge amount measuring apparatus according to claim 2, the water discharge amount from the spout, the actual water spouting volume spouted from the water discharge port, faucet It is possible to accurately and in real time obtain for each selected fluid flow path regardless of the vertical movement of the main body.

In the water discharge amount measuring device according to the third aspect, a plurality of fluid flow paths having different flow coefficients are switched by switching the water discharge form in the faucet body to a different water discharge form. As a result, according to the water discharge amount measuring device described in claim 3, the actual water discharge amount discharged from the water discharge port is accurately and accurately for each of the switched water discharge modes regardless of the vertical movement of the faucet body. It can be calculated in real time.

In the water discharge amount adjusting device according to the fourth aspect, in adjusting the water discharge amount from the water discharge port, first, the fluid inflow pressure is detected in the internal flow passage. Then, the detected inflow pressure and the predetermined target water discharge amount are used for the flow rate adjustment. This fluid inflow pressure has an extremely strong correlation with the flow rate of the fluid that passes through the fluid flow path including the internal flow path and reaches the water discharge port, and changes in the flow rate are reflected accurately and with high responsiveness, and the faucet Naturally, the fluctuation due to the vertical movement of the main body is reflected.

As a result, according to the water discharge amount adjusting device of the fourth aspect, the actual water discharge amount discharged from the water discharge port accurately and promptly matches the target water discharge amount regardless of the vertical movement of the faucet body. Can be made. That is, the accuracy of flow rate adjustment can be improved.

[0273] water spouting volume adjustment device according to claim 5, water spouting volume adjustment device of based on the target water discharge a predetermined amount of the detected intake pressure at <br/> claim 4, wherein the same flow rate adjustment Is performed for each selected fluid channel selectively connected to the water outlet.

As a result, according to the water discharge amount measuring apparatus of the fifth aspect, the actual water discharge amount discharged from the water discharge port is
Regardless of the vertical movement of the faucet body, it is possible to accurately and quickly match the target water discharge amount for each selected fluid flow path.
That is, it is possible to improve the accuracy of flow rate adjustment for each selected fluid flow path. Further, by simply connecting a certain fluid flow path to the water discharge port, it is possible to discharge water with a target water discharge amount related to that fluid flow path, so even if switching to a fluid flow path with a different flow coefficient, water discharge without discomfort Can be done promptly.

According to the sixth aspect of the water discharge amount adjusting device, in adjusting the flow rate for each selected fluid channel, the flow coefficient for each selected fluid channel and the fluid inflow detected for that selected fluid channel. The flow rate of the fluid passing through the internal flow path is calculated based on the pressure. Then, the flow rate is adjusted based on the calculated flow rate and the target water discharge amount for each selected fluid flow path.

Since the calculated fluid flow rate reflects the fluid inflow pressure for each selected fluid flow path, according to the water discharge amount adjusting device of the sixth aspect, the actual water discharged from the water discharge port is also obtained. The water discharge amount can be accurately and promptly matched with the target water discharge amount for each selected fluid flow path regardless of the vertical movement of the faucet body. That is, it is possible to improve the accuracy of flow rate adjustment for each selected fluid channel,
Even if the flow paths are switched to have different flow rate coefficients, it is possible to quickly perform water discharge without a feeling of strangeness.

In the water discharge amount adjusting device according to the seventh aspect, by switching the water discharge form in the faucet body to a different water discharge form, a plurality of fluid flow paths having different flow coefficients are switched, and water is discharged from the water discharge port. To adjust the actual water discharge,
The target water discharge amount for each water discharge form is used. As a result, according to the water discharge amount measuring device described in claim 7, by adjusting the flow rate for each of the switched water discharge modes, the accuracy of the flow rate adjustment for each water discharge mode can be improved and different water discharge modes can be achieved. By switching to, it is possible to promptly obtain the spouted water in the spouted form without any discomfort.

According to the water discharge amount adjusting device of the eighth aspect, since the target water discharge amount used for adjusting the flow rate can be changed, it is possible to diversify the water discharge amount, and the user's preference and purpose of use can be improved. It is possible to obtain a suitable water discharge without discomfort.

According to the water discharge amount adjusting device of the ninth aspect, by periodically changing the target water discharge amount used for adjusting the flow rate, the water discharge amount in each flow path or each water discharge form after switching can be adjusted. Since the water can be changed periodically, the water discharge can be made stronger or weaker, and through further diversification, it is possible to obtain water discharge that does not cause discomfort in accordance with the user's preference and purpose of use. In addition, a so-called massage effect can be achieved depending on the strength of the spouted water.

In the water discharge form switching device according to the tenth aspect, when the water discharge form switching unit is driven to switch the water discharge form from the water discharge port, the flow rate of the fluid passing through the internal flow path to the water discharge port is extremely high. The drive source of the water discharge form switching unit is drive-controlled based on the fluid inflow pressure in the internal flow path having a strong correlation.

As a result, according to the water discharge mode switching device of the tenth aspect, the water discharge mode switching unit is driven in consideration of the load applied to the drive source due to the fluid inflow pressure, and the water discharge mode is quickly switched. be able to.

According to the eleventh aspect of the water discharge form switching device, when the water discharge form switching unit is driven to switch the water discharge form from the water discharge port, the flow rate of the fluid passing through the internal flow path and reaching the water discharge port is extremely high. When the fluid inflow pressure in the internal flow path having a strong correlation is within a predetermined low inflow pressure range, the drive of the water discharge form switching unit is permitted.

As a result, according to the water discharge mode switching device of the eleventh aspect, since the drive source can be drive-controlled under a low load, the drive source can be operated until the fluid flow into the faucet body is stopped. It is not necessary to wait for drive control, and the water discharge form can be switched more quickly. Further, the faucet body itself can be made compact by reducing the size of the drive source.

The water discharge amount adjusting device described in claim 12 is
The inflow pressure of the fluid that reaches the discharge port through the fluid flow path including the internal flow path is detected in the internal flow path, and the detected fluid inflow pressure and the flow coefficient for the fluid flow path including the internal flow path are used. Based on this, the flow rate of the fluid passing through the internal flow path is calculated. On the other hand, the flow rate of the fluid passing through the pipe connected to the faucet body is detected. Then, the flow coefficient is corrected based on the calculated flow rate on the faucet body side and the detected flow rate on the piping side.

Generally, when the faucet body is used, the state of the fluid passage including the internal passage such as the shape of the water discharge hole, the opening area, and the fluid resistance changes due to some unavoidable cause. Since the flow coefficient of the fluid flow path naturally changes, the amount of water discharged from the water outlet changes with time. Therefore, if the amount of water discharged from the water outlet of the faucet body is adjusted without considering such changes in the amount of water discharged over time, the following situation will result.

For example, if clogging occurs for some reason, the flow coefficient of the fluid path changes. Therefore, when the target water discharge amount of the water discharge amount is adjusted to match the calculated flow rate on the faucet body side, depending on the variation of the flow coefficient of the fluid flow path,
The fluid inflow pressure must be changed. However, the variable region of the fluid inflow pressure is limited by the faucet body or the like. Also, even if the target flow rate is adjusted so that the detected flow rate on the pipe side matches, the change in the flow rate coefficient of the fluid flow path cannot be avoided, so it is difficult to make the water discharge rate from the water outlet constant.

However, if the flow rate coefficient used for calculating the fluid flow rate is corrected based on the calculated flow rate on the faucet body side and the detected flow rate on the piping side, the flow rate coefficient after this correction will have a temporal variation in the flow rate coefficient. Since the fluid inflow pressure corresponding to and the detected flow rate on the piping side are reflected, the calculated flow rate on the faucet body side calculated based on the corrected flow coefficient and the detected inflow pressure also It is possible to reflect the detected flow rate and the variation of the water discharge amount over time. Therefore, by using this calculated flow rate for flow rate adjustment, it is possible to adjust the water discharge rate in consideration of changes in the water discharge rate over time.

The water discharge amount adjusting device described in claim 13 is
The amount of water discharged is adjusted in consideration of the change in amount of water discharged over time due to unavoidable causes, for each flow path of different flow coefficient switched in the faucet body. As a result, claim 1
According to the water discharge amount adjusting device described in 3, it is possible to perform the water discharge amount adjustment for each fluid flow path after switching in consideration of the change in the water discharge amount over time.

The water discharge amount adjusting device described in claim 14 is
By switching the water discharge form in the faucet body to a different water discharge form, multiple fluid flow paths with different flow coefficients are switched, and the water discharge amount adjustment that considers the temporal change in the water discharge amount that occurs due to unavoidable causes is performed. This is performed for each water discharge mode switched in the stopper body. As a result, according to the water discharge amount adjusting device of the fourteenth aspect, it is possible to perform the water discharge amount adjustment in consideration of the temporal change in the water discharge amount for each water discharge form after the switching.

The water discharge amount adjusting device according to claim 15 is
The fluid inflow pressure, which has an extremely strong correlation with the flow rate of the fluid that passes through the fluid flow path including the internal flow path and reaches the outlet, is detected in the internal flow path, and the detected fluid inflow pressure of the internal flow path is predetermined. When it is out of the allowable inflow pressure range, the water discharge from the water discharge port is abnormal.

As a result, according to the water discharge amount adjusting device of the fifteenth aspect, it is possible to accurately judge the suitability of the flow rate adjustment based on the abrupt change of the fluid inflow pressure or the changing tendency thereof. Therefore, an unexpected situation due to poor flow rate adjustment, for example, abrupt flow rate adjustment based on a large gap between the flow rate of the fluid passing through the internal flow path and reaching the water discharge port and the target water discharge amount during the water discharge amount adjustment, is avoided. Thus, it is possible to prevent an excessive load from being applied to the faucet body or the like.

The water discharge amount adjusting device described in claim 16 is
Similar to the water discharge amount adjusting device according to the fifteenth aspect, the water discharge abnormality determination from the water discharge port is performed for each selected fluid flow path that is selectively switched and connected to the water discharge port.

As a result, according to the water discharge amount adjusting device of the sixteenth aspect, the suitability of the flow rate adjustment for each selected fluid flow path is accurately determined by the rapid change of the fluid inflow pressure or the change tendency thereof. can do.

The water discharge amount adjusting device according to claim 17 is
A plurality of fluid flow passages having different flow coefficients are switched by switching the water discharge form in the faucet body to a different water discharge form, and a water discharge abnormality from the water discharge port similar to the water discharge amount adjusting device according to claim 15 is determined. , For each water discharge form.

As a result, according to the water discharge amount adjusting device of the seventeenth aspect, whether the flow rate adjustment for each water discharge form is appropriate or not is performed.
It is possible to make an accurate judgment based on a sudden change in the fluid inflow pressure, a tendency of the change, and the like.

[Brief description of drawings]

FIG. 1 is an external view of a bathroom when a water discharger TS is applied to a hot water supply system of the bathroom.

FIG. 2 is a schematic block diagram used for explaining a schematic electrical configuration of a water discharger TS and a configuration of each device.

FIG. 3 is an explanatory diagram for explaining an operation panel section PP provided in an operation section P.

FIG. 4 is a vertical cross-sectional view for explaining the configuration of a shower head A.

5 is a cross-sectional view taken along the line I-I of FIG.

FIG. 6 is an explanatory diagram for explaining each of the water discharge nozzles 24 to 27 in the rotary water discharge body 23.

FIG. 7 is an exploded perspective view of a seal portion C.

FIG. 8 is a sectional view of a seal portion C.

FIG. 9 is a bottom view of a water discharge seal base C1 forming a seal portion C.

FIG. 10 is an enlarged cross-sectional view of the periphery of the seal portion C used for explaining the state of sealing by the seal portion C.

FIG. 11 is an enlarged cross-sectional view of the periphery of the seal portion C used for explaining the state of sealing by the seal portion C.

12 is a sectional view taken along line II-II of FIG.

FIG. 13 is a front view of the shower head A.

14 is a sectional view taken along the line III-III in FIG.

15 is a sectional view taken along line IV-IV of FIG.

FIG. 16 is an explanatory view used for explaining the assembling of the electric wire bundle 89 via the hose connecting portion E.

FIG. 17 is a block diagram centering on a main controller 7 in an operation unit P for explaining the electrical configuration of the water discharge device TS.

FIG. 18 is a block diagram centering on a sub controller 67 in the shower head A for explaining the electrical configuration of the water discharger TS.

FIG. 19 is a perspective view of a main part and a rear view of the main part used for explaining the configuration of a potentiometer 65 that detects the rotational position of the rotary water discharger 23.

FIG. 20 is a flowchart showing a water discharge state main body side setting routine which is performed on the main controller 7 side and sets a water discharge state.

FIG. 21 is a flowchart showing a water discharge routine executed by the main controller 7 for executing water discharge based on a set water discharge state.

22 is a flowchart for explaining in detail the first half of the flow rate control in the flowchart of FIG.

FIG. 23 is a flowchart for detailed description of the latter half of the flow rate control in the flowchart of FIG.

FIG. 24 is an explanatory diagram of a flow rate map used for explaining flow rate control.

FIG. 25: Main controller 7 and sub controller 6
7 is a flowchart for explaining a communication routine for transmitting and receiving data to and from 7.

FIG. 26 is an explanatory diagram illustrating a structure of transmission data.

FIG. 27 is a flowchart showing the processing of a head routine reception routine that is performed on the main controller 7 side and that is interrupted by receiving data transmission from the sub controller 67.

FIG. 28 is a flowchart showing a head information setting routine for setting head information, which is performed on the sub-controller 67 side.

FIG. 29 is a flowchart showing a water discharge nozzle indexing routine performed by the sub-controller 67 for indexing the water discharge nozzle.

FIG. 30 is a timing chart for explaining a state of a detection signal output from the potentiometer 65, a state of driving the geared motor 66, and the like in association with each other.

FIG. 31 is a view corresponding to FIG. 23 in a modified example.

FIG. 32 is a front view for explaining a shower head A in a modified example.

[Explanation of symbols]

3 Flow control valve 4 Flow rate adjustment valve 7 Main controller 8 Water sensor 9 thermistor 10 Hot and cold water discharge connection pipe 11 Water discharge switching unit 24-27 Water discharge nozzle 29 rotation axis 62 Hot water flow path 63 Equipment storage space 64 Electric drive 65 Potentiometer 66 geared motor 67 Sub controller 73 Shower spout switch 74 Shower selector switch 75 Pressure sensor 81 Hose fitting body 85 Support protrusion 88 code passage 89 wire bundle 85a code hole 89a Power wire 89b Control wire A shower head B water discharge part C seal part C1 water discharge seal base C2 crimp seal board D shower head body E Hose connection part MO hot and cold water mixing tap PP operation panel section TS water discharge device h shower hose

Continuation of the front page (31) Priority claim number Japanese Patent Application No. 3-84127 (32) Priority date April 16, 1991 (April 16, 1991) (33) Priority claim country Japan (JP) (31) Priority claim number Japanese Patent Application No. 3-84128 (32) Priority date April 16, 1991 (April 16, 1991) (33) Priority claiming country Japan (JP) (31) Priority claim number Japanese Patent Application No. 3-84129 (32) Priority date April 16, 1991 (April 16, 1991) (33) Priority claiming country Japan (JP) (31) Priority claim number Japanese Patent Application No. 3-27275 (32) Priority Date February 21, 1991 (February 21, 1991) (33) Country claiming priority Japan (JP) (72) Inventor Mikio Horimoto 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Incorporated (72) Inventor Masahito Ichimatsu 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Totoki Equipment Co., Ltd. (56) Reference JP-A 1-227012 (JP, A) JP-A 52-16428 (JP, A) JP-A-52-138727 (JP, A) JP-A-2-30824 (JP, A) 61-153422 (JP, A) JP-A 64-51179 (JP, A) JP-A 3-90735 (JP, A) JP-A 3-220607 (JP, A) JP-A 4-133108 (JP , A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G05D 7/06 E03C 1/042

Claims (17)

(57) [Claims] 1. A water discharge amount measuring device for measuring a water discharge amount from a water discharge port of a water faucet body, wherein the water discharge amount measuring device passes through a fluid flow path including an internal flow path formed in the water faucet body to the water discharge port. An inflow pressure detecting means for detecting the inflow pressure of the incoming fluid in the internal flow passage, and a water discharge amount calculating means for calculating the water discharge amount from the water discharge port of the faucet body based on the detected inflow pressure. A water discharge amount measuring device comprising. 2. A water discharge amount measuring device for measuring a water discharge amount from a water discharge port of a water faucet body, comprising a plurality of fluid flow paths having different flow coefficients including an internal flow path formed in the water faucet body, A flow path switching unit for selectively connecting to the water discharge port of the faucet body and switching, and passing through a selected fluid flow path selected by the flow path switching unit and connected to the water discharge port to reach the water discharge port. the inflow pressure of the fluid, an inlet pressure detection means for detecting in said internal passage, based on said a該検out inflow pressure flow coefficient, the water discharge amount from the water discharge port said each object selected 択流fluid flow passage A water discharge amount measuring device comprising: a water discharge amount calculating means for calculating. 3. The water discharge amount measuring device according to claim 2, further comprising a faucet body capable of switching a water discharge form from a water discharge port to a different water discharge form, wherein the flow path switching means is provided in the faucet body. A water discharge amount measuring device for switching a plurality of fluid flow paths having different flow coefficients by switching a water discharge form to a different water discharge form. 4. A water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a faucet body, comprising: flow rate adjusting means for adjusting a water discharge amount from the water discharge port of the faucet body; Inflow pressure detection means for detecting the inflow pressure of the fluid reaching the water discharge port through the fluid flow path including the formed internal flow path, and the inflow pressure detected is predetermined. A water discharge amount adjusting device, comprising: a flow amount control unit that controls the flow amount adjusting unit based on a target water discharge amount. 5. A water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a water faucet body, comprising: flow rate adjusting means for adjusting a water discharge amount from a water discharge port of the water faucet body; Flow path switching means for selectively connecting and switching a plurality of fluid flow paths including the formed internal flow path and having different flow coefficients to the water outlet of the faucet body, and the flow path switching means selects and discharges the flow path. Inflow pressure detection means for detecting, in the internal flow path, the inflow pressure of the fluid that has passed through the selected fluid flow path connected to the water port and reaches the discharge port, the detected inflow pressure and the selected fluid flow path And a flow rate control means for controlling the flow rate adjusting means on the basis of a predetermined target water discharge rate for each. 6. The water discharge amount adjusting device according to claim 5, wherein the flow rate control unit selects the flow rate switching unit, and the flow rate coefficient relating to the selected fluid flow channel connected to the water discharge port, A flow rate calculation unit that calculates a flow rate of the fluid passing through the internal flow path based on the inflow pressure detected by the inflow pressure detection means for the selected fluid flow path, the calculated flow rate and the selected fluid flow. A water discharge amount adjusting device, comprising: a flow rate control unit for controlling the flow rate adjusting means based on a target water discharge amount predetermined for each road. 7. The water discharge amount adjusting device according to claim 5, further comprising a faucet body capable of switching a water discharge form from a water discharge port to a different water discharge form, wherein the flow path switching means has a different flow coefficient. The switching of the plurality of fluid flow paths is performed by switching the water discharge form in the faucet body to a different water discharge form, and the target water discharge amount when the flow rate control unit controls the flow rate adjusting unit is the different water discharge form. A water discharge amount adjusting device which is a target water discharge amount predetermined for each form. 8. The water discharge amount adjusting apparatus according to claim 4, wherein the target water discharge amount when the flow rate control unit controls the flow rate adjusting unit is changeable. apparatus. 9. The water discharge amount adjusting device according to claim 4, wherein the target water discharge amount when the flow rate control unit controls the flow rate adjusting unit is periodically changed. Water amount adjustment device. 10. A water discharge form switching device for switching a water discharge form from a water discharge port of a water faucet body, the device being incorporated in an internal flow path formed in the water faucet body and reaching the water discharge port, wherein: A water discharge mode switching unit that is driven to switch the water discharge mode from the water discharge port, a drive source that drives the water discharge mode switching unit, and an inflow pressure of the fluid flowing into the internal flow channel are detected in the internal flow channel. A water discharge mode switching device comprising: an inflow pressure detection means; and a control means for controlling the drive source to drive the water discharge mode switching unit based on the detected inflow pressure. 11. The water discharge form switching device according to claim 10, wherein the control unit drives the drive when the inflow pressure detected by the inflow pressure detection unit is within a predetermined low inflow pressure range. A water discharge form switching device comprising a control permission unit for permitting driving of the water discharge form switching unit through control of a water source. 12. A water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a water faucet body, comprising a flow rate detecting means for detecting a flow rate of a fluid passing through a pipe connected to the water faucet body. Inflow pressure detection means for detecting the inflow pressure of the fluid reaching the water discharge port through a fluid flow path including an internal flow path formed in the faucet body, and the internal flow path, A flow rate coefficient storage means for storing the flow rate coefficient of the fluid flow path including the flow rate coefficient, and a flow rate of the fluid passing through the internal flow path based on the stored flow rate coefficient and the inflow pressure detected by the inflow pressure detection means. A water discharge amount adjusting device comprising: a flow rate calculation means; and a correction means for correcting the flow rate coefficient of the flow rate coefficient storage means based on the calculated calculated flow rate and the detected flow rate detected by the flow rate detection means. . 13. The water discharge amount adjusting device according to claim 12, further comprising a faucet body capable of switching the fluid flow path to a fluid flow path having a different flow coefficient, wherein the flow coefficient storage means is provided with the flow rate. A coefficient is stored for each fluid flow path, and the flow rate calculation means detects the flow rate coefficient stored in the flow rate coefficient storage means for the switched fluid flow path switched in the faucet body and the inflow pressure detection. Means calculates the flow rate of the fluid passing through the internal flow path based on the inflow pressure detected for the switched fluid flow path, and the correction means stores the flow coefficient memory for the switched fluid flow path. A water discharge amount adjusting device that corrects the flow coefficient of the means. 14. The water discharge amount adjusting device according to claim 13, wherein the faucet body includes a water discharge mode switching mechanism for switching a water discharge mode from a water discharge port to a different water discharge mode, and the fluid flow having the different flow coefficient. The water discharge amount adjusting device, wherein switching to the passage is performed through switching of the water discharge form by the water discharge form switching mechanism, and the flow coefficient storage means stores the flow coefficient for each water discharge form. 15. A water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a water faucet body to a predetermined target water discharge amount, the fluid flow passage including an internal flow passage formed in the water faucet body. Inflow pressure detecting means for detecting the inflow pressure of the fluid passing through the discharge port to the water discharge port in the internal flow path, and the discharge pressure when the detected inflow pressure is out of a predetermined allowable inflow pressure range. A water discharge amount adjusting device, comprising: a water discharge abnormality detecting unit configured to make water discharge from a water outlet abnormal. 16. A water discharge amount adjusting device for adjusting a water discharge amount from a water discharge port of a water faucet body to a predetermined target water discharge amount, the device including an internal flow path formed in the water faucet body, Flow path switching means for selectively connecting and switching a plurality of different fluid flow paths to the water outlet of the faucet body, and a selected fluid flow path selected by the flow path switching means and connected to the water outlet. Inflow pressure detection means for detecting the inflow pressure of the fluid passing through and reaching the water discharge port in the internal flow path, and the detected inflow pressure is within a predetermined allowable inflow pressure range for each selected fluid flow path. A water discharge amount adjusting device, comprising: a water discharge abnormality detecting unit configured to make water discharge from the water discharge port abnormal when the water is removed. 17. The water discharge amount adjusting device according to claim 16, further comprising a faucet body capable of switching a water discharge form from a water discharge port to a different water discharge form, wherein the flow path switching means is provided in the faucet body. A water discharge amount adjusting device for switching a plurality of fluid flow paths having different flow coefficients by switching a water discharge form to a different water discharge form.