JP7054043B2 - Toilet seat device - Google Patents

Description

Aspects of the present invention generally relate to toilet seat devices.

In the toilet device described in Patent Document 1, hypochlorite water or tap water is automatically sprayed on the bowl portion of the toilet bowl before using the toilet device (for example, when the human body detection sensor detects the human body). .. In this toilet device, hypochlorite water and tap water are sprayed only on the bowl of the toilet bowl, so from the viewpoint of suppressing the generation of bacteria and dirt in every corner of the toilet bowl, toilet seat and toilet lid, There is room for improvement.

In the toilet bowl with a mist cleaning device described in Patent Document 2, ozone water, electrolytic sterilized water, and high-temperature water mist are sprayed based on the manual operation of the user. Patent Document 2 states that the mist generated by the mist cleaning device can be spread to every corner of the toilet bowl, toilet seat, toilet lid, etc. by air flow to clean it.

Japanese Patent No. 5029930 Japanese Unexamined Patent Publication No. 2007-138605

Dirt easily adheres directly to the inner wall surface of the bowl portion or the rim portion in the toilet bowl, and the dirt may adhere to the inner wall surface. Therefore, as in Patent Document 1, it is preferable to execute a premist mode in which sterilized water or tap water is automatically sprayed before using the toilet seat device. By landing a mist of disinfectant water or tap water in the toilet bowl in the premist mode and forming a water film in the toilet bowl, it is possible to suppress the fixation of filth. In the configuration of Patent Document 2, if the user forgets the manual operation, the spray is not performed before using the toilet seat device, so that the water film is not formed and the filth may stick.

Immediately after executing the premist mode, the user is likely to use the toilet seat device. Therefore, in the premist mode, if the mist is landed on a wide range including the toilet seat, the toilet seat becomes wet when the user uses the toilet seat device. In this case, if the user rotates the toilet seat by hand or sits on the toilet seat, the user's buttocks and hands may come into contact with the disinfectant water or tap water that has landed on the toilet seat, causing discomfort. , The problem arises. On the other hand, a method of making the user wait until the toilet seat on which the mist has landed dries, or a method of having the user wipe off the mist on the toilet seat with toilet paper or the like can be considered. However, when the user has a desire to defecate and is in urgent need, it is not preferable to keep the user waiting or to have the user wipe the toilet seat. On the other hand, since some users are concerned about the dirt on the toilet seat before using the toilet seat device, it is also desired to spray the disinfectant water on the toilet seat.

The present invention has been made based on the recognition of such a problem, and it is possible to spray mist into the toilet bowl and the toilet seat portion before using the toilet seat device, and the user does not get wet with the mist. The purpose is to provide a ready-to-use toilet seat device.

The first invention is a toilet seat device installed on the upper part of a toilet bowl, in which a toilet seat portion on which a user sits, a sterilization device for generating sterilized water, and a mist of the sterilized water or tap water. A spraying device that sprays mist, a detection sensor that detects the user, a manual operation unit for the user to spray the disinfectant water, detection information of the detection sensor, or operation of the manual operation unit. A control device for controlling the sterilization device and the spray device based on the information is provided, and the control device detects the user from a state in which the detection sensor does not detect the user. In the premist mode, the mist of the disinfectant water or the mist of the tap water is automatically sprayed into the toilet bowl so that the disinfectant water or the tap water does not land on the toilet seat. The toilet seat device is characterized in that it is possible to execute a manual mist mode in which the mist of the disinfectant water is sprayed onto the toilet seat portion after the user operates the manual operation portion.

According to this toilet seat device, disinfectant water or tap water is landed in the toilet bowl in the premist mode before using the toilet seat device. The inside of the toilet bowl is a part where dirt easily adheres directly and the dirt load is large. Further, the inner wall surface of the bowl portion and the rim portion is a portion having a high tolerance for wetting because inconvenience does not easily occur even if it gets wet. Therefore, before using the toilet seat device, a water film is formed in the toilet bowl by executing the premist mode to suppress the adhesion of filth. Further, in the premist mode, the mist of sterilized water or tap water is sprayed into the toilet bowl so as not to land on the toilet seat. As a result, even if the user rotates the toilet seat by hand or sits on the toilet seat immediately after executing the premist mode, the disinfectant water or tap water touches the user's hand or buttocks. Can be prevented. That is, the user can immediately use the toilet seat device without getting wet with mist.
Further, in the manual mist mode, the disinfectant water can be landed on the toilet seat at the timing when the manual operation unit is operated, so that the generation of bacteria and dirt can be further suppressed. For example, a user who is concerned about the dirt on the toilet seat before using the toilet seat device can spray the mist on the toilet seat and sterilize it by the manual mist mode. Since the sterilization is performed based on the user's own operation, the user's sense of security and satisfaction can be enhanced.

According to a second aspect of the present invention, in the first invention, the control device has a particle size of the sterilized water mist sprayed in the manual mist mode, or the sterilized water mist sprayed in the premist mode. It is a toilet seat device characterized in that the spraying device is controlled so as to be smaller than the particle size of the mist of tap water.

According to this toilet seat device, in the manual mist mode, since the particle size of the sterilized water mist is small, the sterilized water mist is likely to diffuse over a wide range. This makes it possible to suppress bacteria and dirt not only in the bowl portion of the toilet bowl but also in a wide range such as the rim portion and the toilet seat portion. Further, in the premist mode, since the particle size of the mist of the disinfectant water or tap water is large, a water film can be formed on the inner wall surface of the bowl portion or the rim portion in a short time. As a result, the premist mode can be terminated before the user sits on the toilet seat.

A third aspect of the invention further comprises, in the first or second invention, a blower device that blows air toward the inside of the toilet bowl, wherein the spray device is a state in which the toilet seat device is installed on the upper portion of the toilet bowl. In the toilet seat portion, the mist of the disinfectant water or the mist of the tap water is configured to be sprayed toward the inside of the toilet bowl, and the manual mist mode is set to the spray device. In a state where the mist of the disinfectant water is sprayed into the toilet bowl, the blower is operated to generate a first updraft capable of raising the mist of the disinfectant water toward the toilet seat portion. In the premist mode, the first updraft is generated in a state where the spray device is sprayed with the mist of the disinfectant water or the mist of the tap water into the toilet bowl. The toilet seat device is characterized in that the blower device is controlled so as not to raise the mist of the disinfectant water or the mist of the tap water toward the toilet seat portion side.

According to this toilet seat device, it is possible to switch between a case where the mist sprayed from below the toilet seat portion is placed on the updraft and landed on the toilet seat, and a case where the mist is not placed on the updraft. As a result, with a single spraying device, the mist of disinfectant water is landed on the toilet seat in the manual mist mode, and the mist of disinfectant water or tap water is applied so as not to wet the toilet seat in the premist mode. Water can be landed in the toilet bowl.

A fourth aspect of the invention is the toilet seat device according to the third aspect, wherein the premist mode stops the operation of the blower device.

According to this toilet seat device, by stopping the operation of the blower device, it is possible to more reliably prevent the mist-like sterilized water from rising toward the toilet seat portion in the premist mode.

A fifth aspect of the invention is the third invention, in which the premist mode operates the blower to generate a second updraft, and the flow velocity of the second updraft is higher than the flow velocity of the first updraft. It is a toilet seat device characterized by being low.

According to this toilet seat device, in the premist mode, the second updraft with a flow velocity lower than the flow velocity of the first updraft does not raise the mist of disinfectant water or tap water to the toilet seat side, but horizontally or downwardly. Can be diffused into. As a result, the disinfectant water can be landed on a wider area in the toilet bowl.

A sixth aspect of the invention is characterized in that, in any one of the third to fifth inventions, the spraying device radially sprays the mist of the disinfectant water or the mist of the tap water in a top view. It is a toilet seat device.

According to this toilet seat device, even if the mist of disinfectant water or the mist of tap water does not get on the updraft in the premist mode, the mist is landed on a wide range in the toilet bowl such as the inner wall surface of the bowl part and the rim part. be able to.

The seventh invention is the toilet lid that can be opened and closed in any one of the first to sixth inventions, that is, the toilet lid that covers the toilet seat portion from above in the closed state, and the toilet lid that is electrically opened and closed. The control device includes a toilet lid motor, and the control device executes the manual mist mode with the toilet lid closed, and executes the premist mode with the toilet lid open. It is a toilet seat device.

According to this toilet seat device, the manual mist mode is executed with the toilet lid closed, so that the mist of the disinfectant water is diffused while preventing the mist of the disinfectant water from scattering outside the toilet bowl. Bacteria and stains can be suppressed in a wide range such as toilet bowls, toilet seats and toilet lids. On the other hand, since the premist mode is executed with the toilet lid open, the user can immediately sit on the toilet seat without waiting for the completion of the execution of the premist mode. In the premist mode, the spraying device sprays the mist so that the mist does not land on the toilet seat, so even if the user sits on the toilet seat while the premist mode is being executed, the user It is unlikely that mist will be applied to the toilet.

According to the aspect of the present invention, it is possible to spray the mist into the toilet bowl and the toilet seat portion before using the toilet seat device, and the toilet seat device can be used immediately without the user getting wet with the mist. Provided.

It is a perspective view which illustrates the toilet apparatus which concerns on embodiment. It is sectional drawing which illustrates the toilet device which concerns on embodiment. It is a block diagram which illustrates the composition of the main part of the toilet seat device which concerns on embodiment. 4 (a) to 4 (e) are a plan view and a perspective view illustrating the toilet device according to the embodiment. 5 (a) to 5 (c) are perspective views illustrating another toilet device according to the embodiment. 6 (a) to 6 (c) are schematic views illustrating the spraying device according to the embodiment. 7 (a) and 7 (b) are plan views illustrating the disc of the spraying device according to the embodiment. It is a flowchart illustrating the operation of the toilet seat device which concerns on embodiment. 9 (a) and 9 (b) are schematic views illustrating the operation of the toilet seat device according to the embodiment. It is a schematic diagram which illustrates the operation in the after mist mode and the manual mist mode of the toilet seat device which concerns on embodiment. 11 (a) and 11 (b) are cross-sectional views illustrating the operation of the toilet seat device according to the embodiment in the after mist mode and the manual mist mode. 12 (a) to 12 (d) are plan views illustrating the operation of the toilet seat device according to the embodiment in the after mist mode and the manual mist mode. It is a flowchart which illustrates the operation in the aftermist mode of the toilet seat device which concerns on embodiment. It is a flowchart which illustrates the operation in the manual mist mode of the toilet seat device which concerns on embodiment. It is a schematic diagram which illustrates the operation in the premist mode of the toilet seat device which concerns on embodiment. 16 (a) to 16 (c) are cross-sectional views and plan views illustrating the operation of the toilet seat device according to the embodiment in the premist mode. 17 (a) to 17 (c) are cross-sectional views and plan views illustrating the operation of the toilet seat device according to the embodiment in the premist mode. It is a flowchart which illustrates the operation in the aftermist mode of the toilet seat device which concerns on embodiment. 19 (a) to 19 (e) are plan views illustrating the toilet device according to the embodiment. It is a table exemplifying the amount of water landing of mist in the after mist mode. 21 (a) and 21 (b) are perspective views illustrating the method for measuring the particle size according to the embodiment. 22 (a) and 22 (b) are a plan view and a cross-sectional view illustrating a part of the toilet device according to the modified example of the embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, similar components are designated by the same reference numerals and detailed description thereof will be omitted as appropriate.
FIG. 1 is a perspective view illustrating the toilet device according to the embodiment.
FIG. 2 is a cross-sectional view illustrating a part of the toilet device according to the embodiment.

The toilet device 10 shown in FIG. 1 includes a Western-style sitting toilet (hereinafter simply referred to as a “toilet bowl” for convenience of explanation) 800 and a toilet seat device 100. The toilet bowl 800 has a concave bowl portion 801 that receives filth. The toilet seat device 100 is installed on the upper part of the toilet bowl 800.

The toilet seat device 100 includes a casing 400, a toilet seat portion 200 on which the user sits, and a toilet lid 300. The toilet seat portion 200 and the toilet lid 300 are pivotally supported with respect to the casing 400, respectively. The state of FIG. 1 is a state in which the toilet seat portion 200 is closed (a state in which it is lowered) and a state in which the toilet lid 300 is in an open state (a state in which it is raised). In the closed state, the toilet lid 300 covers the seat surface of the toilet seat portion 200 from above.

Inside the casing 400, there is a built-in body cleaning function unit that realizes cleaning of the human body local part (such as "buttocks") of the user sitting on the toilet seat portion 200. Further, for example, the casing 400 is provided with a seating detection sensor 404 that detects that the user has sat on the toilet seat portion 200. When the seating detection sensor 404 detects the user sitting on the toilet seat 200, when the user operates the manual operation unit 500 such as a remote controller, it is referred to as a cleaning nozzle (simply referred to as a "nozzle" for convenience of the following description. ) 473 can be advanced into the bowl portion 801 of the toilet bowl 800. In the toilet seat device 100 shown in FIG. 1, the nozzle 473 represents a state in which the nozzle 473 has advanced into the bowl portion 801.

One or more spouts 474 are provided at the tip of the nozzle 473. Then, the nozzle 473 can inject water from the spout 474 provided at the tip thereof to wash the "buttocks" of the user sitting on the toilet seat portion 200.

In the specification of the present application, each of "upper", "lower", "front", "rear", "left side" and "right side" faces the open toilet lid 300 and is attached to the toilet seat portion 200. This is the direction seen from the sitting user.

As shown in FIG. 2, the toilet bowl 800 has a rim portion 805 provided on the bowl portion 801. The rim portion 805 is an annular portion forming the upper edge portion of the toilet bowl 800. Reservoir 801w is stored in the bowl portion 801. For example, when the user operates the toilet bowl cleaning with a switch provided on the remote controller or the like, or when the user stands up from the toilet seat portion 200, the toilet bowl cleaning (dirt in the bowl portion 801 is discharged and the bowl portion 801 is discharged. The operation of cleaning the surface of the toilet) is executed. In toilet bowl cleaning, cleaning water is supplied into the bowl portion 801. For example, in the example of FIG. 2, the washing water is discharged from the bowl water supply port 811 along the upper edge of the toilet bowl 800.

The rim portion 805 has an upper surface 806 and an inner wall surface 807. The upper surface 806 is a surface facing the back surface 204 of the closed toilet seat portion 200. The inner wall surface 807 is a portion of the inner wall surface of the toilet bowl 800 (the wall surface facing the center side of the bowl portion 801) above the portion through which the washing water for cleaning the toilet bowl flows. That is, in the present specification, the inner wall surface 807 of the rim portion 805 refers to the non-cleaning portion in the toilet bowl cleaning. In the example of FIG. 2, the inner wall surface 807 includes an elevation surface located above the bent portion 805B bent like a shelf.

The inner wall surface 807 of the bowl portion 801 and the rim portion 805 is a portion having a large dirt load because dirt easily adheres directly to the inner wall surface 807. Further, the inner wall surface 807 of the bowl portion 801 and the rim portion 805 is a portion having a high tolerance for wetting because inconvenience does not easily occur even if it gets wet.

Dirt is less likely to directly adhere to the upper surface 806 of the toilet seat portion 200 and the rim portion 805 than to the inner wall surface 807 of the bowl portion 801 and the rim portion 805. For example, urine or sewage that hits the bowl portion 801 or the accumulated water 801w adheres to the upper surface 806 of the toilet seat portion 200 and the rim portion 805. Therefore, the upper surface 806 of the toilet seat portion 200 and the rim portion 805 is a portion where the dirt load is relatively small. Further, if the upper surface 806 of the toilet seat portion 200 or the rim portion 805 is excessively wet, the disinfectant water may touch the user's skin or drip out of the toilet bowl. Therefore, the toilet seat portion 200 or the rim portion 805 The upper surface 806 of the above surface is a portion having a low tolerance for wetting.

FIG. 3 is a block diagram illustrating a configuration of a main part of the toilet seat device according to the embodiment.
Note that FIG. 3 also shows the main components of the water channel system and the electrical system.
The toilet seat device 100 includes a solenoid valve 431, a sterilization device 450, a switching valve 472, a spray device 481, a nozzle motor 476, a nozzle 473, a nozzle cleaning chamber 478, and flow paths 110 to 113. These are arranged in the casing 400.

The flow path 110 is a flow path for guiding water supplied from a water supply source (not shown) such as a water supply or a water storage tank to a spray device 481 or a nozzle 473. A solenoid valve 431 is provided on the upstream side of the flow path 110. The solenoid valve 431 is a solenoid valve that can be opened and closed, and controls the supply of water based on a command from the control device 405 provided inside the casing 400.

On the flow path 110, downstream of the solenoid valve 431, a sterilizing device 450 for generating sterilizing water is provided. The sterilizer 450 produces sterilized water containing, for example, hypochlorous acid. Examples of the sterilizer 450 include an electrolytic cell unit. The electrolytic cell unit electrolyzes tap water flowing through the space (flow path) between the anode plate (not shown) and the cathode plate (not shown) by controlling the energization from the control device 405. The sterilized water is not limited to those containing hypochlorous acid. For example, the disinfectant water may be a solution containing metal ions such as silver ion or copper ion, a solution containing electrolytic chlorine or ozone, acidic water, alkaline water or the like. The sterilizing device 450 is not limited to the electrolytic cell, and may have any configuration capable of generating sterilized water.

A switching valve 472 is provided on the flow path 110 and downstream of the sterilizing device 450. A nozzle 473, a nozzle cleaning chamber 478, and a spraying device 481 are provided downstream of the switching valve 472. The flow path 110 is branched into a flow path 111 that guides water to the nozzle 473, a flow path 112 that guides water to the nozzle cleaning chamber 478, and a flow path 113 that guides water to the spray device 481 by the switching valve 472. The switching valve 472 controls the opening and closing of each of the flow path 111, the flow path 112, and the flow path 113 based on the command from the control device 405. That is, the switching valve 472 controls the supply of water to the nozzle 473, the nozzle cleaning chamber 478, and the spraying device 481. Further, the switching valve 472 switches the flow rate of the water supplied downstream thereof.

The nozzle 473 receives a driving force from the nozzle motor 476 and moves in and out of the bowl portion 801 of the toilet bowl 800. That is, the nozzle motor 476 advances and retreats the nozzle 473 based on a command from the control device 405. The nozzle 473 is housed in the casing 400 when not in use. The nozzle 473 discharges water from the spout 474 in a state of advancing forward from the casing 400 to clean the human body local part.

The nozzle cleaning chamber 478 cleans the outer peripheral surface (body) of the nozzle 473 by injecting disinfectant water or tap water from a spout provided inside the nozzle cleaning chamber 478.

The spraying device 481 makes tap water or sterilized water generated by the sterilizing device 450 into a mist. The spraying device 481 sprays mist M (sterilized water mist or tap water mist) on the bowl portion 801 and the rim portion 805, and the toilet seat portion 200. In other words, the spraying device 481 makes the mist of disinfectant water or the mist of tap water land on the bowl portion 801 and the rim portion 805, and the toilet seat portion 200. In the specification of the present application, "water landing" means that water (sterilized water or tap water) adheres to the surface of an object. In particular, the term "direct water landing" means that water (sterilized water or fine particles p of tap water) arrives at the surface of an object from the air.

Further, inside the casing 400, a toilet seat motor 511 (rotating device), a toilet lid motor 512 (rotating device), a blower device 513, and a warm air heater 514 are provided.
The toilet seat motor 511 electrically rotates the toilet seat portion 200 to open and close based on a command from the control device 405. The toilet lid motor 512 electrically rotates the toilet lid 300 to open and close based on a command from the control device 405.

The blower 513 is, for example, a fan provided inside the casing 400. The blower device 513 operates based on a command from the control device 405. For example, the blades rotate with the rotation of the motor of the blower 513. As a result, the blower device 513 can blow air toward the inside of the toilet bowl 800 (for example, the inside of the bowl portion 801). Further, the ventilation device 513 may blow air to the local part of the user sitting on the toilet seat portion 200. The hot air heater 514 heats the air sent to the outside of the casing 400 by the blower device 513. As a result, warm air can be sent to the local part of the user to dry the local part.

The toilet seat heater 515 (drying device) is provided inside, for example, the toilet seat portion 200. The toilet seat heater 515 has, for example, an annular metal member provided along the circumference of the opening 200a formed in the center of the toilet seat portion 200. The toilet seat heater 515 warms the toilet seat portion 200 by energizing the toilet seat heater 515 based on a command from the control device 405. As the toilet seat heater 515, for example, a tubing heater, a sheathed heater, a halogen heater, a carbon heater, or the like may be used. The metal member is made of, for example, aluminum or copper. Further, as the shape of the metal member, various shapes such as a sheet shape, a wire shape, and a mesh shape can be adopted.

As the control device 405, a circuit to which power is supplied from a power supply circuit (not shown) is used. For example, the control device 405 includes an integrated circuit such as a microcomputer. The control device 405 has an electromagnetic valve 431, a sterilization device 450, based on the detection information of the detection sensor 402 (for example, the human body detection sensor 403 or the seating detection sensor 404) that detects the user, or the operation information of the manual operation unit 500. It controls a switching valve 472, a nozzle motor 476, a blower 513, a hot air heater 514, a toilet seat heater 515, a toilet seat motor 511, and a toilet lid motor 512.

The manual operation unit 500 is an operation unit for the user to spray the disinfectant water at an arbitrary timing, for example. For example, the manual operation unit 500 is a remote controller having a switch, a button, or the like, and when the user operates the manual operation unit 500, operation information (signal) instructing spraying of sterilized water is sent to the control device 405. The control device 405 controls the sterilization device 450 and the spray device 481 based on the operation information. As a result, the user can spray the sterilized water by operating the manual operation unit 500.
Further, the manual operation unit 500 may have not only the spray of disinfectant water but also switches and buttons for the user to operate each function of the toilet seat device 100. When an operation corresponding to each function is performed, the operation information is sent to the control device 405, and the control device 405 controls the operation of each part of the toilet seat device 100 based on the operation information.

The seating detection sensor 404 can detect whether or not the user is seated on the toilet seat portion 200. The seating detection sensor 404 detects the user's seating and leaving. As the seating detection sensor 404, a microwave sensor, a distance measuring sensor (infrared projection type sensor), an ultrasonic sensor, a tact switch, a capacitance switch (touch sensor), or a strain sensor can be used. In this example, the seating detection sensor 404 uses a distance measuring sensor provided in the casing 400.

When contact type sensors such as a tact switch, an electrostatic sensor and a strain sensor are used, these contact type sensors are provided on the toilet seat portion 200. When the user sits on the toilet seat 200, the tact switch is pressed by the weight of the user. Alternatively, the user comes into contact with the electrostatic sensor. Alternatively, pressure is applied to the strain sensor by the weight of the user. The seating of the user can be detected by the electric signals from these sensors.

The human body detection sensor 403 can detect a user who is in front of the toilet bowl 800, that is, a user who is located at a position forwardly separated from the toilet seat portion 200. That is, the human body detection sensor 403 can detect a user who has entered the toilet room and is approaching the toilet seat portion 200. As such a human body detection sensor, for example, a focal light sensor, a microwave sensor, an ultrasonic sensor, or a distance measuring sensor (infrared projection type sensor) can be used. In this example, the pyroelectric sensor provided in the casing is used for the human body detection sensor 403. Further, the human body detection sensor 403 detects a user immediately after opening the door of the toilet room and a user immediately before entering the toilet room, that is, a user existing in front of the door trying to enter the toilet room. You may. For example, when a microwave sensor is used, it is possible to detect the presence of a user through the door of the toilet room.

The control device 405 receives the detection information of the human body detection sensor 403 (signal indicating the presence or absence of the user) and the detection information of the seating detection sensor 404 (signal indicating the presence or absence of the user), and the received detection. Based on the information, the operation of each part of the toilet seat device 100 is controlled.

The control device 405 can execute three types of mist modes: an after mist mode, a premist mode, and a manual mist mode.
The after mist mode is, for example, an operation mode in which the mist of sterilized water is automatically sprayed based on the detection information of the detection sensor 402 after the user's toilet device 10 is used. The premist mode is, for example, an operation mode in which a mist of sterilized water or tap water is automatically sprayed based on the detection information of the detection sensor 402 before the user's toilet device 10 is used. The manual mist mode is an operation mode for spraying the mist of sterilized water based on the operation information of the manual operation unit 500.

4 (a) to 4 (e) are a plan view and a perspective view illustrating the toilet device according to the embodiment.
FIG. 4A shows a state in which a part of the toilet device 10 is viewed from the front.
As shown in FIG. 4A, the spray device 481, the nozzle damper 479, and the blower damper 516 are located at the rear upper portion of the bowl portion 801 in a state where the toilet seat device 100 is installed on the upper portion of the toilet bowl 800.

FIG. 4B is an enlarged representation of a part of FIG. 4A. In FIG. 4B, a part of the casing 400 located in front of the spraying device 481 is omitted for the sake of visibility.
The nozzle damper 479 is rotatably supported with respect to the casing 400. The nozzle 473 is located behind the nozzle damper 479 when it is retracted inside the casing 400. At the time of cleaning the human body local part or the like, the nozzle 473 abuts on the nozzle damper 479, rotates and opens the nozzle damper 479, and advances from the inside of the casing 400.

4 (c) to 4 (e) are enlarged perspective views showing the periphery of the spray device 481, the nozzle damper 479, and the blower damper 516.
The blower damper 516 is rotatably supported with respect to the casing 400. A blower device 513 is arranged behind the blower damper 516. The blower damper 516 covers the opening 516a of the casing 400. The air sent from the blower 513 is sent into the toilet bowl 800 through the opening 516a.

FIG. 4 (c) shows a state in which the blower device 513 has stopped operating, and FIGS. 4 (d) and 4 (e) show that the blower device 513 is activated and blows air toward the inside of the bowl portion 801. Indicates the state.
As shown in FIG. 4C, the blower damper 516 is closed when the blower is stopped.
As shown in FIG. 4D, when the blower device 513 is activated, the blower damper 516 is rotated and opened by the pressure (wind pressure) of the air sent from the blower device 513. As a result, the blower device 513 blows air from the upper rear portion in the bowl portion 801 toward the lower front portion in the bowl portion 801 as shown by the arrow A1.
In the state of FIG. 4 (e), the amount of air sent by the blower device 513 is larger (or the wind speed is higher) than in the state of FIG. 4 (d). In this case, the blower damper 516 rotates further and opens as compared with the state of FIG. 4D. As a result, the blower device 513 blows air from the rear upper portion in the bowl portion 801 toward the front upper portion in the bowl portion 801 as shown by the arrow A2, for example.

In this way, the direction of the wind sent from the blower device 513 is changed by the blower damper 516. In other words, the blower device 513 can control the blower direction by the air volume (wind speed). By placing the mist sprayed from the spray device 481 on the airflow generated by the wind from the blower device 513, the range where the mist lands and the amount of mist landing in each range (sterilized water that lands on each range). Alternatively, the amount of tap water) may be controlled.

5 (a) to 5 (c) are perspective views illustrating another toilet device according to the embodiment. In this example, a mist damper 482 is provided in front of the spray device 481. The mist damper 482 covers at least a part in front of the spray device 481 in the closed state. For example, the mist damper 482 covers the front of the disk 481b, which will be described later with respect to FIG. 6, in the closed state.

The mist damper 482 is fixed to, for example, the nozzle damper 479, and interlocks with the nozzle damper 479. When the nozzle damper 479 opens, the mist damper 482 also opens, and when the nozzle damper 479 closes, the mist damper 482 also closes.

5 (b) and 5 (c) show the periphery of the nozzle damper 479 and the mist damper 482 in an enlarged manner. FIG. 5B shows a state in which the nozzle 473 is retracted inside the casing 400. At this time, the nozzle damper 479 is in a closed state and covers the front of the nozzle 473. Further, the mist damper 482 is in a closed state and covers at least a part of the front of the spray device 481.

When the spraying device 481 is not used, the spraying device 481 is concealed from the bowl portion 801 side by the mist damper 482 as shown in FIG. 5 (b). This makes it possible to prevent urine and dirt from adhering to the spraying device 481.

FIG. 5C shows a state in which the nozzle 473 advances forward and the nozzle damper 479 is rotated. The forward advance distance of the nozzle 473 at this time may be shorter than the forward advance distance at the time of washing the human body locally. For example, the tip of the nozzle 473 is in contact with the nozzle damper 479. Further, in FIG. 5C, the mist damper 482 rotates together with the nozzle damper 479 and is open. A part of the spraying device 481 (disk 481b) is exposed to the bowl portion 801 side. As a result, the spraying device 481 can spray the mist toward the bowl portion 801.

6 (a) to 6 (c) are schematic views illustrating the spraying device according to the embodiment.
FIG. 6A is a perspective view of the spraying device 481, and FIG. 6B is a side view of the spraying device 481.
The spraying device 481 has a motor 481a and a disk 481b connected below the motor 481a. The rotation of the motor 481a is controlled by the control device 405. When the motor 481a rotates, the driving force of the rotation is transmitted to the disk 481b, and the disk 481b rotates.

As shown in FIG. 6B, water W (tap water or sterilized water generated by the sterilizing device 450) is supplied to the upper surface of the disk 481b. During the rotation of the disk 481b, the water W is supplied, so that the spraying device 481 sprays the water W in the form of a mist. In this example, the disk 481b has a flat disk shape, but may be appropriately provided with irregularities, or may have a conical shape or a sphere.

FIG. 6 (c) is an enlarged view of a part of the disk 481b as viewed from above. The water W dropped on the upper surface of the rotating disk 481b spreads like a film on the disk 481b by centrifugal force and is radiated from the disk 481b. At this time, the water W splits from the vicinity of the edge of the disk 481b in the form of a film, or splits after becoming thread-like, and then becomes fine particles p (mist). The particle size of the mist (diameter of the fine particles p) can be controlled by the rotation speed of the disk 481b, that is, the rotation speed of the motor 481a. The higher the rotation speed, the smaller the particle size of the mist. For example, low-speed rotation with a rotation speed of about 1000 (rotation per minute: rpm), medium-speed rotation with a rotation speed of about 10,000 rpm, or high-speed rotation with a rotation speed of about 20,000 rpm is appropriately used to obtain a desired particle size. .. Further, the particle size of the mist can be controlled by adjusting the flow rate of the water W supplied from the water supply port 481c to the spray device 481.

In the specification of the present application, the particle size is the particle size of the fine particles p existing in the air before landing on the toilet device 10, and is, for example, the Sauter mean diameter (total volume / total surface area). The method for measuring the "particle size" in the present specification will be described later with reference to FIG. Further, the mist means a range in which the particle size is 10 micrometers (μm) or more and 300 μm or less. If the particle size of the mist is less than 10 μm, a long time is required to wet the target portions such as the bowl portion 801 and the rim portion 805 and the toilet seat portion 200. Further, when disinfecting water containing hypochlorous acid is used, if the particle size of the mist is less than 10 μm, the concentration of hypochlorous acid in the mist tends to be attenuated, and the disinfection performance tends to deteriorate. On the other hand, if the particle size of the mist is larger than 300 μm, the mist is difficult to diffuse and it is difficult to spray the mist over a wide area. Further, in the following description, the large particle size mist is a mist having a particle size in the range of 100 μm or more and 300 μm or less, preferably 150 μm or more and 300 μm or less, and the medium particle size mist is a mist having a particle size of 50 μm or more and 200 μm or less. Hereinafter, the mist is preferably in the range of 60 μm or more and 150 μm or less, and the small particle size mist is a mist having a particle size of 10 μm or more and 100 μm or less, preferably 10 μm or more and 60 μm or less.

7 (a) and 7 (b) are plan views illustrating the disc of the spraying device according to the embodiment.
7 (a) and 7 (b) show the rotating disk 481b as viewed from above. In the example of FIG. 7A, the number of water supply ports 481c for supplying water W onto the disk 481b is one. In this case, in the region near the water supply port 481c, the water W is radiated from the disc 481b before the water film of the supplied water W becomes thin on the disc 481b. Therefore, as shown in FIG. 7A, the particle size of the mist is biased around the spraying device 481. That is, a region R1 having a relatively large mist particle size, a region R2 having a medium mist particle size, and a region R3 having a relatively small mist particle size are generated. In addition, the flow rate (the amount of mist sprayed per unit time) also varies depending on the particle size of the mist. That is, the flow rate is large in the region R1, the flow rate is medium in the region R2, and the flow rate is small in the region R3.

Therefore, for example, the particle size, flow rate, direction, etc. of the mist sprayed from the spray device 481 into the toilet bowl 800 depending on the position of the water supply port 481c or the rotation direction (clockwise or counterclockwise) of the disk 481b. It is possible to adjust. Thereby, the range where the mist sprayed from the spraying device 481 lands on the water and the amount of the mist landing in each range may be controlled. Further, a cover or the like for controlling the direction in which the mist is sprayed may be appropriately provided around the disk 481b.

Further, the number of water supply ports 481c is not limited to one, and a plurality of water supply ports 481c may be provided. For example, in FIG. 7B, four water supply ports 481c are provided. The water supply ports 481c are arranged at intervals of 90 ° when viewed from the center of the disk 481b. By arranging the plurality of water supply ports 481c along the outer periphery of the disk at substantially equal intervals in this way, it is possible to suppress the unevenness of the mist particle size and the flow rate around the spraying device 481 and perform uniform spraying.

The spray device 481 is arranged below the toilet seat portion 200 in a state where the toilet seat device 100 is installed on the upper part of the toilet bowl 800 (see FIG. 2), and sprays mist toward the inside of the toilet bowl 800. Here, the state in which the spraying device 481 is arranged below the toilet seat portion 200 means that at least a part of the spraying device 481 (disk 481b in this example) is below the toilet seat portion 200. As a result, the mist of tap water or sterilized water is sprayed into the toilet bowl 800 from below the toilet seat portion 200.

In the embodiment, the spraying device is not limited to the device described with respect to FIGS. 6 and 7. For example, an ultrasonic atomizer may be used as the spray device. The ultrasonic atomizer irradiates the liquid with ultrasonic waves to make the liquid into a mist. Further, for example, a two-fluid nozzle may be used as the spraying device. The two-fluid nozzle ejects both gas and liquid to make the liquid mist. However, when the devices described with respect to FIGS. 6 and 7 are used, there is an advantage that the spray range can be easily controlled by the blower device 513. In addition, the risk of clogging is low, and ancillary devices such as a compressor are unnecessary.

FIG. 8 is a flowchart illustrating the operation of the toilet seat device according to the embodiment.
9 (a) and 9 (b) are schematic views illustrating the operation of the toilet seat device according to the embodiment.
FIG. 9B shows the target sites (P1 to P4) on which the mist of sterilized water or tap water lands. FIG. 9A shows the amount of water landing on each target portion (the amount of water landing per unit area) in each mist mode in four stages of “large”, “medium”, “small”, and “minimal”.

The premist mode automatically prevents the disinfectant water or tap water from landing on the toilet seat 200 after the detection sensor 402 changes from not detecting the user to detecting the user. A mist of disinfectant water or a mist of tap water is sprayed into the toilet bowl 800.

For example, as shown in FIG. 8, when the user enters the toilet room and the human body detection sensor 403 detects the user's entry, a signal (detection information) indicating the user's entry is transmitted to the control device 405. To the toilet. The control device 405 automatically executes the premist mode based on the signal. In the premist mode, the control device 405 sprays the mist of tap water on the spray device 481 and makes the mist land on the target site. As shown in FIGS. 9A and 9B, the target portions in the premist mode are the target portion P3 (inner wall surface 807 of the rim portion 805) and the target portion P4 (bowl portion 801). In the premist mode, the upper surface 806 of the toilet seat portion 200 and the rim portion 805 is not a target portion for spraying.

As described above, before using the toilet seat device 100, disinfectant water or tap water is landed in the toilet bowl 800 in the premist mode. As a result, a water film can be formed in the toilet bowl 800, which has a large dirt load and a high tolerance for wetting, and can suppress the adhesion of dirt. On the other hand, on the upper surface 806 of the toilet seat portion 200 and the rim portion 805 where the dirt load is small, the disinfectant water is landed in the after mist mode after using the toilet seat device 100 without forming a water film in the premist mode. Therefore, the sticking of filth can be suppressed. Therefore, in the toilet seat device 100, in the premist mode, the mist of disinfectant water or tap water is sprayed into the toilet bowl 800 so as not to land on the toilet seat portion 200. As a result, while suppressing the generation of bacteria and dirt in a wide range such as the toilet bowl 800 and the toilet seat 200 by the premist mode and the aftermist mode, the user can use the disinfectant water or tap water sprayed by the premist mode. You can prevent it from getting wet. For example, even if the user manually rotates the toilet seat 200 or sits on the toilet seat 200 immediately after executing the premist mode, the user's buttocks and hands are sterilized by water landing on the toilet seat. It is possible to prevent contact with water or tap water. That is, the user can immediately use the toilet seat device 100 without getting wet with mist.

Further, in the premist mode, by not allowing the mist to land on the toilet seat portion 200, a water film can be formed in the toilet bowl 800 in a short time, and the execution time of the premist mode can be shortened. A user who has entered the toilet room can use the toilet seat device 100 without waiting for the end of the premist mode.

In the premist mode, the range in which "sterilized water or tap water does not land on the toilet seat" is not limited to the case where all mist does not land on the toilet seat 200, but a small amount of mist does land on the toilet seat 200. It may include the case of. For example, the amount of tap water or sterilized water landing on the toilet seat 200 in the premist mode is smaller than the amount of sterilized water landing on the toilet seat 200 in the aftermist mode or the manual mist mode. However, in the premist mode, the amount of sterilized water or tap water landing on the toilet seat 200 is preferably as small as possible, for example, zero.

In the after mist mode, after the detection sensor 402 changes from the state of detecting the user to the state of not detecting the user, the mist of the disinfectant water is automatically sprayed into the toilet bowl 800 and the toilet seat 200.

For example, as shown in FIG. 8, when the user leaves the toilet room and the human body detection sensor 403 detects that the user has left the room, a signal (detection information) indicating that the user has left the room is transmitted to the control device 405. To the toilet. The control device 405 automatically executes the aftermist mode based on the signal. In the after mist mode, the control device 405 causes the sterilizing device 450 to generate sterilized water, sprays the spray device 481 with the mist of the sterilized water, and causes the mist to land on the target site. As shown in FIGS. 9 (a) and 9 (b), the target parts in the aftermist mode are the target part P1 (front surface 203 of the toilet seat portion 200) and the target part P2 (back surface 204 of the toilet seat portion 200 and the rim portion 805). 806), the target site P3 and the target site P4.

In this way, by executing the aftermist mode, the sterilized water can be automatically landed in the toilet bowl 800 and in the toilet seat portion 200 after the user's toilet seat device 100 is used. As a result, it is possible to automatically suppress the generation of bacteria and dirt not only in the toilet bowl 800 but also in a wide range such as the toilet seat 200.

Since the aftermist mode is executed after the user's toilet seat device 100 is used, it is easy to secure a long non-use time as compared with before use. Therefore, even if the upper surface 806 of the toilet seat portion 200 or the rim portion 805 gets wet due to the after mist mode, the upper surface 806 of the toilet seat portion 200 or the rim portion 805 tends to dry by the next use.

In the manual mist mode, after the user operates the manual operation unit 500, the mist of the disinfectant water is sprayed into the toilet bowl 800 and the toilet seat unit 200.

For example, as shown in FIG. 8, when the user operates the manual operation unit 500 while the user is in the toilet room (for example, after executing the premist mode), a signal (operation information) corresponding to the operation is transmitted to the control device 405. Will be done. The control device 405 executes the manual mist mode based on the signal. The manual mist mode is executed at timings such as before, after, and when cleaning the toilet seat device 100. In the manual mist mode, the control device 405 causes the disinfectant device 450 to generate disinfectant water, sprays the spray device 481 with the mist of the disinfectant water, and causes the mist to land on the target site. The target sites in the manual mist mode are the target site P1, the target site P2, the target site P3, and the target site P4, as shown in FIGS. 9 (a) and 9 (b).

In this way, by landing the disinfectant water in the toilet bowl 800 and the toilet seat 200 in the manual mist mode, it is possible to further suppress the generation of bacteria and dirt. For example, fixed stains that are difficult to control in the aftermist mode can be sterilized by wiping the sterilized water that has landed on it with toilet paper or the like. The user can easily wipe and sterilize without using a special sterilization paper.
Further, for example, a user who is concerned about the dirt on the toilet seat portion 200 before using the toilet seat device 100 can sterilize the toilet seat portion 200 by the manual mist mode. Since the sterilization is performed based on the user's own operation, the user's sense of security and satisfaction can be enhanced.

As shown in FIG. 8, the control device 405 does not detect the user from the state where the detection sensor detects the user after executing the manual mist mode in the state where the detection sensor detects the user. Even if the state is reached, the aftermist mode is executed. As a result, even if the manual mist mode is executed before the user's toilet seat device 100 is used (defecation or urination), the after mist mode is executed to more reliably suppress the generation of bacteria and dirt. can do.

However, if the user leaves the toilet room immediately after the manual mist mode ends, there is a possibility that the disinfectant water that has landed on the upper surface 806 of the toilet seat portion 200 or the rim portion 805 has not been wiped off. For example, as shown in FIG. 8, when the manual mist mode is executed after the toilet seat device 100 is used and the detection sensor does not detect the user within the first predetermined time T1 from the end of the manual mist mode. There is a possibility that sterilized water remains on the upper surface 806 of the toilet seat portion 200 and the rim portion 805.

Therefore, when the control device 405 changes from the state in which the detection sensor detects the user to the state in which the user is not detected within the first predetermined time T1 from the end of the manual mist mode, the control device 405 executes the after mist mode. You don't have to. Alternatively, the control device 405 determines the amount of sterilized water sprayed by the spray device 481 in the after mist mode from the state in which the detection sensor detects the user after the lapse of the first predetermined time T1 from the end of the manual mist mode. The number may be reduced as compared with the case where the user is not detected. As a result, it is possible to prevent the sterilized water from dripping out of the toilet bowl due to the upper surface 806 of the toilet seat portion 200 and the rim portion 805 getting too wet due to the aftermist mode. The first predetermined time T1 is, for example, about 10 seconds to 30 seconds. However, the first predetermined time T1 is not limited to this, and can be appropriately set.

Further, when the next user enters the toilet room immediately after the end of the after mist mode, the upper surface 806 of the toilet seat portion 200 and the rim portion 805 may be wet with the disinfectant water. For example, when the next user enters the toilet room and operates the manual operation unit 500 within the second predetermined time T2 from the end of the after mist mode, the toilet seat portion 200 and the upper surface 806 of the rim portion 805 are displayed on the upper surface 806. There is a possibility that sterilized water still remains.

Therefore, the control device 405 does not have to execute the manual mist mode when the manual operation unit 500 is operated within the second predetermined time T2 from the end of the after mist mode. Alternatively, the control device 405 compares with the case where the manual operation unit 500 operates the amount of the sterilized water sprayed by the spray device 481 in the manual mist mode after the second predetermined time T2 has elapsed from the end of the after mist mode. It may be reduced. As a result, it is possible to prevent the sterilized water from dripping out of the toilet bowl due to the upper surface 806 of the toilet seat portion 200 and the rim portion 805 getting too wet due to the manual mist mode. The second predetermined time T2 is, for example, about 10 seconds to 30 seconds. However, the second predetermined time T2 is not limited to this, and can be appropriately set.

Further, in the control device 405, the amount of water landing per unit area (average water landing amount) of the disinfectant water landing on the toilet seat 200 in the manual mist mode is the disinfectant water landing on the toilet seat 200 in the after mist mode. The spraying device is controlled so as to be larger than the amount of sterilized water landed per unit area (average amount of water landed). For example, as shown in FIG. 9A, the amount of sterilized water per unit area landing on the target site P1 and the target site P2 in the manual mist mode is “small”. Further, in the aftermist mode, the amount of sterilized water per unit area landing on the target site P1 is "minimal", and the amount of sterilized water per unit area landing on the target site P2 is "minimum". "Small".

As described above, since the amount of sterilized water landing on the toilet seat 200 in the after mist mode is relatively small, the toilet seat 200 can be dried in a short time after the after mist. This makes it possible to prevent the disinfectant water from touching the user's hands and buttocks even when the user uses the toilet seat device 100 after the after mist. Further, since the amount of the sterilized water landing on the toilet seat 200 in the manual mist mode is relatively large, the sterilized water can be firmly impregnated into the toilet paper or the like. As a result, it is possible to improve the sterilization performance by wiping and prevent the resin toilet seat portion 200 from being damaged during wiping. Therefore, it is possible to achieve both the drying performance in the after mist mode and the wiping performance in the manual mist mode.

Further, as shown in FIG. 9A, the amount of sterilized water per unit area landing on the target site P3 and the target site P4 in the manual mist mode and the after mist mode is “large”. On the other hand, in the premist mode, the amount of sterilized water per unit area landing on the target site P3 and the target site P4 is "medium". After using the toilet seat device 100, by landing a large amount of sterilized water in the toilet bowl 800, the generation of bacteria and dirt can be further suppressed.

Further, for example, the control device 405 makes the particle size of the mist of the disinfectant water sprayed in the after mist mode smaller than the particle size of the mist of the tap water (or the disinfectant water) sprayed in the premist mode. Control the spraying device. Further, the control device 405 sprays so that the particle size of the mist of the disinfectant water sprayed in the manual mist mode is smaller than the particle size of the mist of the tap water (or the disinfectant water) sprayed in the premist mode. Control the device.

As described above, in the after mist mode and the manual mist mode, by reducing the particle size of the mist, the mist of the sterilized water can be easily diffused over a wide range. As a result, bacteria and dirt can be suppressed not only in the bowl portion 801 but also in a wide range such as the rim portion 805 and the toilet seat portion 200. In the premist mode, by increasing the particle size of the mist, a water film can be formed on the inner wall surface 807 of the bowl portion 801 and the rim portion 805 in a short time. As a result, the premist mode can be terminated before the user sits on the toilet seat.

An example of the operation of the toilet seat device 100 in the after mist mode and the manual mist mode will be described with reference to FIGS. 10 to 12.

FIG. 10 is a schematic diagram illustrating the operation of the toilet seat device according to the embodiment in the after mist mode and the manual mist mode.
In the after mist mode and the manual mist mode, the control device 405 operates the blower device 513. As a result, the blower 513 blows air into the toilet bowl 800 to generate a first updraft U1 in the toilet bowl 800. Further, the control device 405 controls the spray device 481 so as to simultaneously generate the first mist M1 of the sterilized water and the second mist M2 of the sterilized water in the state where the first updraft U1 is generated. .. The first mist M1 is a mist having a small particle size. The particle size of the first mist M1 (diameter of the fine particles p1 of the disinfected water) is a particle size that can be increased toward the toilet seat portion 200 by the first updraft U1. The second mist M2 is a mist having a medium particle size. The particle size of the second mist M2 (diameter of the fine particles p2 of the sterilized water) is larger than the particle size of the first mist M1. The second mist M2 does not rise toward the toilet seat portion 200 due to the first updraft U1. The range in which the second mist M2 does not rise in the first updraft U1 may include not only the case where all the second mist M2 does not rise but also the case where a slight second mist M2 rises. do. The second mist M2 that rises due to the first updraft U1 is preferably as small as possible, and is preferably zero, for example.

That is, the first mist M1 sprayed from below the toilet seat portion 200 rides on the first updraft U1 and rises toward the toilet seat portion 200, and lands on the upper surface 806 of the toilet seat portion 200 and the rim portion 805. On the other hand, since the second mist M2 sprayed from below the toilet seat portion 200 has a large particle size, it does not rise toward the toilet seat portion 200 due to the first updraft U1, and the inner wall surface 807 of the bowl portion 801 and the rim portion 805. Land on the water. As a result, with a single spraying device 481, the mist of disinfectant water can be landed not only on the bowl portion 801 of the toilet bowl 800 but also on the upper surface 806 of the rim portion 805 and the toilet seat portion 200. Therefore, bacteria and dirt can be suppressed not only in the bowl portion 801 of the toilet bowl 800 but also in a wide range such as the rim portion 805 and the toilet seat portion 200. Further, by using a single spraying device 481, the toilet seat device 100 can be miniaturized.

Further, by simultaneously generating a first mist M1 having a small particle size that can be ascended by the first updraft U1 and a second mist M2 having a particle size that is not ascended by the first updraft U1, the bowl portion 801 is removed. The amount of sterilized water on the rim portion 805, the amount of sterilized water on the upper surface 806 of the rim portion 805, and the amount of sterilized water on the toilet seat portion 200 can be arbitrarily controlled.

Further, the control device 405 controls the spray device 481 so that the total amount (g) of the first mist M1 is smaller than the total amount (g) of the second mist M2 in the after mist mode and the manual mist mode. As a result, the amount of sterilized water landing on the upper surface 806 of the toilet seat portion 200 and the rim portion 805 is relatively small, and the amount of sterilized water landing on the inner wall surface 807 of the bowl portion 801 and the rim portion 805 is relatively small. It will be relatively large. By landing a large amount of sterilized water mist on the bowl portion 801 and the inner wall surface 807, which have a large dirt load and a high tolerance for wetting, the generation of bacteria and dirt can be suppressed. By reducing the amount of sterilized water landing on the upper surface 806 of the toilet seat 200 and the rim portion 805, which has a small dirt load and a low tolerance for wetting, the toilet seat 200 and the toilet seat 200 and the rim portion 805 can be suppressed in a short time while suppressing bacteria and dirt. The upper surface 806 of the rim portion 805 can be dried. This makes it possible to prevent the disinfectant water from touching the user's skin or dripping out of the toilet bowl.

The total amount of mist is the total amount of mist sprayed by the spraying device 481 in one mist mode (one after mist mode or one manual mist mode). In one mist mode, the spraying device 481 may spray the mist continuously or intermittently. Further, the total amount of the first mist M1 and the total amount of the second mist M2 can be controlled by adjusting, for example, the rotation speed of the disk 481b and the flow rate of the sterilized water supplied to the spray device 481.

Further, the spraying device 481 sprays the sterilized water so that the first mist M1 is formed above the second mist M2. More specifically, the spraying device 481 sprays the first mist M1 diagonally upward with respect to the horizontal plane. Further, the spraying device 481 sprays the second mist M2 in a direction parallel to or diagonally downward with respect to the horizontal plane.

Thereby, when the first mist M1 having a small particle size is raised by the first updraft U1, it is possible to prevent the first mist M1 from coming into contact with the second mist M2. Therefore, the particle size of the first mist M1 becomes large due to the contact with the second mist M2, and it is possible to prevent the first mist M1 from falling into the toilet bowl 800. The direction of the first mist M1 and the direction of the second mist M2 may be divided into upper and lower parts according to the particle size after spraying.

Further, the spraying device 481 sprays each of the first mist M1 and the second mist M2 radially in a top view. Radial is a state in which the range in which the mist is present becomes wider as the distance from the spraying device 481 increases. For example, in top view, the mist is sprayed in all directions away from the center of the disc 481b.

Since the first mist M1 is radial, the first mist M1 can be placed on the entire first updraft U1 and land on a wide range such as the toilet seat portion 200 and the upper surface 806 of the rim portion 805. Further, since the second mist M2 is radial, even if the second mist M2 has a particle size so large that it does not get on the air flow, the inside of the toilet bowl 800 such as the inner wall surface 807 of the bowl portion 801 and the rim portion 805. The second mist M2 can be landed on a wide range of water.

The formation position and spreading method of the mist (first mist M1 and second mist M2) are adjusted by the rotation speed, arrangement, and shape of the disk 481b, the position of the water supply port 481c for supplying water to the disk 481b, and the like. be able to.

11 (a) and 11 (b) are cross-sectional views illustrating the operation of the toilet seat device according to the embodiment in the after mist mode and the manual mist mode.
11 (b) is an enlarged view of the region R4 shown in FIG. 11 (a).
The dashed arrow represents the airflow formed by the blower 513. As shown in FIG. 11A, in the after mist mode and the manual mist mode, the blower device 513 blows air forward and downward. At least a part of the air sent from the blower 513 hits the inside of the toilet bowl 800 (inside the bowl portion 801 or the inner wall surface 807 of the rim portion 805) and heads upward. As a result, an updraft U1 that winds up above the toilet seat 200 is formed from the inside of the toilet bowl 800 below the toilet seat 200.

The solid arrow represents the flow of mist sprayed from the spraying device 481. The thickness of the solid arrow corresponds to the amount of disinfected water. The thicker the arrow, the more sterilized water. In the after mist mode and the manual mist mode, a part of the mist is radiated from the spray device 481 toward the inner wall surface 807 of the rim portion. Further, the mist having a relatively large particle size lands on the bowl portion 801. The mist having a relatively small particle size lands on the upper surface 806 of the rim portion, the toilet seat portion 200, the toilet lid 300, and the like due to the updraft. As a result, it is possible to sterilize every corner of the toilet device 10 including the rim portion 805, the toilet seat portion 200, the toilet lid 300, and the like.

Further, in the embodiment, the nozzle 473 is arranged between the spray device 481 and the blower device 513 in the width direction (short direction) of the nozzle 473 (see FIG. 4). That is, the spray device 481 is arranged at a position away from the blower device 513 in the left-right direction. As a result, the first mist M1 having a small particle size is blown from the blower 513 into the toilet bowl 800 before getting on the first updraft U1 (airflow before generating the first updraft U1). ), It is possible to prevent water from landing in the toilet bowl 800.

12 (a) to 12 (d) are plan views illustrating the operation of the toilet seat device according to the embodiment in the after mist mode and the manual mist mode.
In FIGS. 12 (a) and 12 (c), the toilet seat portion 200 and the toilet lid 300 are omitted for convenience of explanation. The broken line arrow indicates the blowing direction of the blowing device 513. The solid arrow represents the flow of mist sprayed from the spraying device 481. The thickness of the solid arrow corresponds to the amount of disinfected water. The thicker the arrow, the more sterilized water. 12 (b) and 12 (d) represent the toilet seat portion 200.
12 (a) and 12 (b) show the state when the disk 481b of the spraying device 481 is counterclockwise in the top view. In this case, a large amount of sterilized water lands on the left side of the toilet device 10 as compared with the right side. For example, as shown in FIG. 12A, on the upper surface of the rim portion, a large amount of sterilized water lands on the left side region RL1 rather than the right side region RR1. For example, as shown in FIG. 12B, in the toilet seat portion 200, more disinfectant water lands on the left side region RL2 than on the right side region RR2.

12 (c) and 12 (d) show the state when the disk 481b of the spraying device 481 is clockwise in the top view. In this case, a large amount of sterilized water lands on the right side of the toilet device 10 as compared with the left side. For example, as shown in FIG. 12 (c), on the upper surface of the rim portion, a large amount of sterilized water lands on the right side region RR1 rather than the left side region RL1. For example, as shown in FIG. 12 (d), in the toilet seat portion 200, more disinfectant water lands on the right side region RR2 than on the left side region RL2.

It is preferable that the control device 405 controls the motor 481a of the spraying device 481 to appropriately switch between clockwise and counterclockwise during the aftermist mode and the manual mist mode. As a result, the distribution of mist in the left-right direction tends to be uniform.

FIG. 13 is a flowchart illustrating the operation of the toilet seat device according to the embodiment in the aftermist mode.
When the human body detection sensor 403 detects that the user has left the room (step S101: Yes), the control device 405 controls the toilet lid motor 512 to close the toilet lid 300, open the solenoid valve 431, and the motor of the spray device 481. The 481a and the disk 481b are rotated counterclockwise (CCW) at high speed (step S102). When the solenoid valve 431 opens, water supply to the disk 481b is started.

The control device 405 maintains the state in which the disk 481b is rotated at high speed for a predetermined time (step S103: No). As a result, the residual water on the disc 481b can be discharged from the disc 481b. At this time, for example, since the mist damper 482 is closed, the mist is not sprayed into the toilet bowl 800.

When the predetermined time elapses (step S103: Yes), the control device 405 advances the nozzle 473 into the bowl portion 801 by the nozzle motor 476. Along with this, the mist damper 482 opens (step S104).

After that, the control device 405 controls the sterilization device 450 to start the generation of sterilized water, and controls the blower device 513 to start blowing air into the toilet bowl 800 (step S105). As a result, mist of sterilized water starts to be sprayed on the toilet bowl 800, the toilet seat 200, the toilet lid 300, and the like. The control device 405 maintains a state in which the mist of sterilized water is sprayed from the disk 481b rotating at high speed counterclockwise for a predetermined time (t1) (step S106: No).

When the predetermined time (t1) has elapsed (step S106: Yes), the control device 405 rotates the motor 481a and the disk 481b of the spraying device 481 clockwise (CW) at high speed (step S107). The control device 405 maintains a state in which the mist of the disinfectant water is sprayed from the disk 481b rotating at high speed clockwise for a predetermined time (t1) (step S108: No).

When the predetermined time (t1) elapses (step S108: Yes), the control device 405 controls the blower device 513 to stop blowing, controls the sterilization device 450 to stop the generation of sterilized water, and the motor. The 481a and the disk 481b are rotated clockwise (CW) at a low speed (step S109).

The control device 405 supplies tap water to the disk 481b and maintains the state in which the disk 481b rotates at a low speed for a predetermined time (step S110: No). As a result, the disc 481b is self-cleaned. The self-cleaning is an operation of physically cleaning the disc at a rotation speed that does not intentionally generate mist. Sterilized water may be used for self-cleaning.

When the predetermined time elapses (step S110: Yes), the control device 405 closes the solenoid valve 431 (step S111). The control device 405 maintains a state in which the water supply to the disk 481b is stopped and the disk 481b is rotated at a low speed for a predetermined time (step S112: No). As a result, the residual water on the disc 481b can be removed.

When the predetermined time elapses (step S112: Yes), the control device 405 stops the rotation of the motor 481a and the disk 481b, and the nozzle motor 476 retracts the nozzle 473 into the casing 400. Along with this, the mist damper 482 closes. Further, the control device 405 turns on the toilet seat heater 515 (energized state) (step S113).

The control device 405 keeps the toilet seat heater 515 ON for a predetermined time (step S114: No). As a result, the temperature of the toilet seat portion 200 can be raised to evaporate the sterilized water that has landed on the toilet seat portion 200, and the toilet seat portion 200 can be dried. Instead of the toilet seat-heater 515, the blower device 513 and the warm air heater 514 may be driven to dry the toilet seat portion 200 with warm air.

When the predetermined time elapses (step S114: Yes), the control device 405 turns off the toilet seat heater 515 (non-energized state) (step S115). This completes the aftermist mode.

FIG. 14 is a flowchart illustrating the operation of the toilet seat device according to the embodiment in the manual mist mode.
When the user operates the manual operation unit 500 (step S201: Yes), the control device 405 controls the toilet lid motor 512 to close the toilet lid 300, open the solenoid valve 431, and the motor 481a of the spray device 481 and the motor 481a. The disk 481b is rotated counterclockwise (CCW) at high speed (step S202). When the solenoid valve 431 opens, water supply to the disk 481b is started.

The control device 405 maintains the state in which the disk 481b is rotated at high speed for a predetermined time (step S203: No). As a result, the residual water on the disc 481b can be discharged from the disc 481b. At this time, for example, since the mist damper 482 is closed, the mist is not sprayed into the toilet bowl 800.

When the predetermined time elapses (step S203: Yes), the control device 405 advances the nozzle 473 into the bowl portion 801 by the nozzle motor 476. Along with this, the mist damper 482 opens (step S204).

After that, the control device 405 controls the sterilization device 450 to start the generation of sterilized water, and controls the blower device 513 to start blowing air into the toilet bowl 800 (step S205). As a result, mist of sterilized water starts to be sprayed on the toilet bowl 800, the toilet seat 200, the toilet lid 300, and the like. The control device 405 maintains a state in which the mist of sterilized water is sprayed from the disk 481b rotating at high speed counterclockwise for a predetermined time (t2) (step S206: No).

When the predetermined time (t2) has elapsed (step S206: Yes), the control device 405 rotates the motor 481a and the disk 481b of the spraying device 481 clockwise (CW) at high speed (step S207). The control device 405 maintains a state in which the mist of the disinfectant water is sprayed from the disk 481b rotating at high speed clockwise for a predetermined time (t2) (step S208: No).

When the predetermined time (t2) elapses (step S208: Yes), the control device 405 controls the blower device 513 to stop blowing, controls the sterilization device 450 to stop the generation of sterilized water, and the motor. The 481a and the disk 481b are rotated clockwise (CW) at a low speed (step S209).

The control device 405 supplies tap water to the disk 481b and maintains the state in which the disk 481b rotates at a low speed for a predetermined time (step S210: No). As a result, the disc 481b is self-cleaned.

When the predetermined time elapses (step S210: Yes), the control device 405 closes the solenoid valve 431 (step S211). The control device 405 maintains a state in which the water supply to the disk 481b is stopped and the disk 481b is rotated at a low speed for a predetermined time (step S212: No). As a result, the residual water on the disc 481b can be removed.

When the predetermined time elapses (step S212: Yes), the control device 405 stops the rotation of the motor 481a and the disk 481b, and the nozzle motor 476 retracts the nozzle 473 into the casing 400. Along with this, the mist damper 482 closes (step S213). This completes the manual mist mode. In addition, the user can sterilize the toilet seat 200 by appropriately wiping the sterilized water that has landed on the toilet seat 200 with toilet paper or the like after the manual mist mode.

The control device 405 controls the spraying device so that the time for spraying the disinfectant water in the manual mist mode is longer than the time for spraying the disinfectant water in the after mist mode. For example, the predetermined time (t2) described with respect to FIG. 14 is longer than the predetermined time (t1) described with respect to FIG. As a result, the amount of sterilized water landing on the toilet seat 200 in the manual mist mode can be made larger than the amount of sterilized water landing on the toilet seat 200 in the after mist mode. As a result, the sterilizing water can be firmly impregnated into the toilet paper or the like in the manual mist mode, and the sterilizing performance can be improved. In addition, it is possible to prevent the resin toilet seat portion 200 from being damaged during wiping.

For example, it is conceivable to change the amount of sterilized water landed by changing the particle size of the mist of the sterilized water without changing the time for spraying the sterilized water. For example, by increasing the particle size, the amount of sterilized water landed can be increased. However, if the particle size is increased, it may be difficult for the sterilized water to get on the updraft. On the other hand, by changing the time for spraying the sterilized water, the amount of the sterilized water landing on the toilet seat portion 200 can be increased without changing the particle size. Therefore, the mist of the sterilized water can be easily put on the updraft, and the sterilized water can be diffused over a wide range of the toilet seat portion 200.

Further, the control device 405 operates the drying device for drying the toilet seat portion 200 with the first drying force during or after the execution of the aftermist mode. For example, in FIG. 13, the control device 405 operates the toilet seat heater 515 with the first heating amount (first electric power (watt)) in steps S113 and S114.
On the other hand, the control device 405 does not operate the drying device during or after the execution of the manual mist mode, or operates with a second drying force smaller than the first drying force. For example, in FIG. 14, the control device 405 does not operate the toilet seat heater 515. Alternatively, the control device 405 may operate the toilet seat heater 515 with a second heating amount (second electric power (watt)) smaller than the first heating amount. For example, the toilet seat heater 515 causes the temperature of the seat surface during or after the execution of the aftermist mode to be higher than the temperature of the seat surface during or after the execution of the manual mist mode.

In this way, during or after the execution of the aftermist mode, the drying device dries the toilet seat portion 200 with a relatively large first drying force (for example, the first electric power), so that the disinfectant water landed on the toilet seat portion 200. The drying time can be shortened. On the other hand, during or after the execution of the manual mist mode, the drying device does not operate, or the toilet seat portion 200 is dried with a relatively small second drying force (for example, a second electric power) to land on the toilet seat portion 200. The drying time of the sterilized water can be lengthened. As a result, it is possible to prevent the toilet seat portion 200 from drying before wiping off the disinfectant water that has landed on the toilet seat portion 200 with toilet paper.

An example of the operation of the toilet seat device 100 in the premist mode will be described with reference to FIGS. 15 to 17.
FIG. 15 is a schematic diagram illustrating the operation of the toilet seat device according to the embodiment in the premist mode.
In the premist mode, the control device 405 activates the spray device 481 to generate mist M3 (sterilized water mist or tap water mist). Further, the control device 405 controls the blower device 513 so as not to generate the first updraft U1 and to raise the mist M3 toward the toilet seat portion 200 in a state where the spray device 481 is sprayed with the mist M3. As described above, the first updraft U1 is an airflow created by the blower device 513, and is an airflow capable of raising the mist of sterilized water to the toilet seat portion 200 side in the after mist mode and the manual mist mode. Is.

In the premist mode, the mist sprayed from below the toilet seat portion 200 does not rise to the toilet seat portion 200 side, but lands on the bowl portion 801 of the toilet bowl 800 and the inner wall surface 807 of the rim portion 805. A water film is formed on the bowl portion 801 and the inner wall surface 807, making it difficult for dirt to adhere. Further, since the mist does not rise toward the toilet seat portion 200, it is possible to prevent the upper surface 806 of the toilet seat portion 200 and the rim portion 805 from getting wet in the premist mode. This makes it possible to prevent the user's hands and buttocks from getting wet when the user sits down immediately after the premist mode or the toilet seat portion 200 is rotated by hand.
On the other hand, in the after mist mode and the manual mist mode, the control device 405 operates the blower device 513 and raises the mist of the disinfected water to the toilet seat portion 200 side by the first updraft U1.

That is, the control device 405 can switch between a case where the mist sprayed from below the toilet seat portion 200 is placed on the updraft and landed on the toilet seat portion 200, and a case where the mist is not placed on the updraft. As a result, in the single spraying device 481, the mist of the disinfectant water is landed in the toilet bowl 800 and the toilet seat 200 in the after mist mode and the manual mist mode, and the toilet seat 200 is not wet in the premist mode. The mist can be landed in the toilet bowl 800.

In the premist mode, the range of "not raising the mist of sterilized water or the mist of tap water to the toilet seat side" may include not only the case where all the mist does not rise but also the case where a slight mist rises. It shall be. For example, the amount of mist rising toward the toilet seat in the premist mode is smaller than the amount of mist rising toward the toilet seat in the after mist mode or the manual mist mode.

For example, in the premist mode, the control device 405 stops the operation of the blower device 513 and does not blow air. This makes it possible to more reliably prevent the mist from rising toward the toilet seat portion 200.

Further, in the premist mode, the control device 405 may operate the blower device 513 to generate the second updraft U2. The flow velocity of the second updraft U2 is lower than the flow velocity of the first updraft U1, and the mist M3 does not rise toward the toilet seat portion 200 due to the second updraft U2. The second updraft U2 allows the mist to diffuse horizontally or downward without rising to the toilet seat 200 side. As a result, the disinfectant water can be landed on a wider area in the toilet bowl 800.

Further, even in the premist mode, the spraying device 481 sprays the mist of sterilized water or the mist of tap water radially in a top view. As a result, even when the mist does not ride on the updraft in the premist mode, the mist can be landed on a wide range such as the inner wall surface 807 of the bowl portion 801 and the rim portion 805.

The mist M3 is, for example, a mist having a medium particle size or a large particle size. Even if the particle size of the mist M3 (diameter of the fine particles p3 of the sterilized water or tap water) is larger than the particle size of the first mist M1 and the particle size of the second mist M2 in the manual mist mode and the after mist mode, for example. good. As a result, the mist M3 may not rise toward the toilet seat portion 200.

16 (a) to 16 (c) are cross-sectional views and plan views illustrating the operation of the toilet seat device according to the embodiment in the premist mode.
16 (a) to 16 (c) illustrate a state in which the motor 481a of the spraying device 481 is rotating at a medium speed. At this time, the mist sprayed by the spraying device 481 is a mist having a medium particle size. Further, in FIGS. 16A to 16C, the solid arrow indicates the flow of mist sprayed from the spraying device 481. The thickness of the solid arrow corresponds to the amount of disinfected water. The thicker the arrow, the more sterilized water. In addition, in FIG. 16 (b) and FIG. 16 (c), the toilet seat portion 200 is omitted for convenience of explanation.

As shown in the cross-sectional view of FIG. 16A, the spraying device 481 sprays mist toward the upper end of the rim portion 805. When the motor 481a rotates at a medium speed, the outer region RS (outer portion 801S in the bowl portion 801 and the rim portion) of the toilet bowl 800 is compared with the inner region RU of the toilet bowl 800 (inner portion 801U of the bowl portion 801). A large amount of disinfectant water or tap water lands on the inner wall surface 807) of the 805.

The plan view of FIG. 16B shows the state when the disc 481b of the spraying device 481 is counterclockwise in the top view. In this case, a large amount of sterilized water or tap water lands on the left side as compared with the right side in the toilet bowl 800.

The plan view of FIG. 16C shows the state when the disk 481b of the spraying device 481 is clockwise in the top view. In this case, a large amount of sterilized water or tap water lands on the right side as compared with the left side in the toilet bowl 800.

17 (a) to 17 (c) are cross-sectional views and plan views illustrating the operation of the toilet seat device according to the embodiment in the premist mode.
17 (a) to 17 (c) illustrate a state in which the motor 481a of the spraying device 481 is rotating at a low speed. At this time, the mist sprayed by the spraying device 481 is a mist having a large particle size. Further, in FIGS. 17 (a) to 17 (c), the solid arrow indicates the flow of mist sprayed from the spraying device 481. The thickness of the solid arrow corresponds to the amount of disinfected water. The thicker the arrow, the more sterilized water. In addition, in FIG. 17 (b) and FIG. 17 (c), the toilet seat portion 200 is omitted for convenience of explanation.

When the motor 481a rotates at a low speed, the particle size of the mist is large and the centrifugal force is small as compared with the case where the motor is rotating at a medium speed, so that the flight distance of the mist is short. As shown in the cross-sectional view of FIG. 17A, when the motor 481a is rotating at a low speed, more disinfectant water or tap water is used in the inner region RU of the toilet bowl 800 than in the outer region RS of the toilet bowl 800. Lands on the water.

The plan view of FIG. 17B shows the state when the disk 481b of the spraying device 481 is clockwise in the top view. In this case, a large amount of sterilized water or tap water lands on the right side as compared with the left side in the toilet bowl 800.

The plan view of FIG. 17C shows the state when the disc 481b of the spraying device 481 is counterclockwise in the top view. In this case, a large amount of sterilized water or tap water lands on the left side as compared with the right side in the toilet bowl 800.

The control device 405 controls the motor 481a of the spray device 481 to appropriately switch between low-speed rotation and medium-speed rotation during the premist mode. As a result, the mist of sterilized water or tap water can be applied to every corner of the toilet bowl 800.

Further, it is preferable that the control device 405 controls the motor 481a of the spraying device 481 to appropriately switch between clockwise and counterclockwise rotation during the premist mode (during low-speed rotation and medium-speed rotation). As a result, the distribution of mist in the left-right direction tends to be uniform.

FIG. 18 is a flowchart illustrating the operation of the toilet seat device according to the embodiment in the aftermist mode.
When the human body detection sensor 403 detects the entry of the user (step S301: Yes), the control device 405 controls the toilet lid motor 512 to open the toilet lid 300, the solenoid valve 431, and the motor of the spray device 481. The 481a and the disk 481b are rotated counterclockwise (CCW) at a medium speed (step S302). When the solenoid valve 431 opens, water supply to the disk 481b is started.

The control device 405 maintains the state in which the disk 481b is rotated at a medium speed for a predetermined time (step S303: No). As a result, the residual water on the disc 481b can be discharged from the disc 481b. At this time, for example, since the mist damper 482 is closed, the mist is not sprayed into the toilet bowl 800.

When the predetermined time elapses (step S303: Yes), the control device 405 advances the nozzle 473 into the bowl portion 801 by the nozzle motor 476. Along with this, the mist damper 482 opens (step S304). As a result, the mist of tap water starts to be sprayed into the toilet bowl 800. The control device 405 maintains a state in which the mist of tap water is sprayed from the disk 481b rotating at a medium speed counterclockwise for a predetermined time (step S305: No).

When the predetermined time elapses (step S305: Yes), the control device 405 rotates the motor 481a and the disk 481b of the spraying device 481 clockwise (CW) at a medium speed (step S306). The control device 405 maintains a state in which tap water mist is sprayed from the disk 481b that rotates clockwise at a medium speed for a predetermined time (step S307: No).

When the predetermined time elapses (step S307: Yes), the control device 405 rotates the motor 481a and the disk 481b of the spraying device 481 clockwise (CW) at a low speed (step S308). The control device 405 maintains a state in which the mist of tap water is sprayed from the disk 481b rotating at a low speed clockwise for a predetermined time (step S309: No).

When the predetermined time elapses (step S309: Yes), the control device 405 rotates the motor 481a and the disk 481b of the spraying device 481 counterclockwise (CCW) at a low speed (step S310). The control device 405 maintains a state in which the mist of tap water is sprayed from the disk 481b rotating at a low speed counterclockwise for a predetermined time (step S311: No).

When the predetermined time elapses (step S311: Yes), the control device 405 closes the solenoid valve 431 (step S312). The control device 405 maintains a state in which the water supply to the disk 481b is stopped and the disk 481b is rotated at a low speed for a predetermined time (step S313: No). As a result, the residual water on the disc 481b can be removed.

When the predetermined time elapses (step S313: Yes), the control device 405 stops the rotation of the motor 481a and the disk 481b, and the nozzle motor 476 retracts the nozzle 473 into the casing 400. Along with this, the mist damper 482 is closed (step S314). This completes the premist mode.

The control device 405 executes the premist mode with the toilet lid 300 open. That is, in the premist mode, the mist is sprayed with the stool lid 300 open. As a result, the user can immediately sit on the toilet seat portion 200 without waiting for the execution of the premist mode to be completed. In the premist mode, the spraying device 481 sprays the toilet seat portion 200 so that the mist does not land on the toilet seat portion 200. Therefore, even if the user sits on the toilet seat portion 200 during the execution of the premist mode, the spraying device 481 is used. It is unlikely that a person will get mist.

On the other hand, the control device 405 executes the after mist mode and the manual mist mode with the toilet lid 300 closed. That is, in the after mist mode and the manual mist mode, the mist is sprayed with the toilet lid 300 closed. As a result, while preventing the mist of the disinfectant water from scattering outside the toilet bowl, the mist of the disinfectant water is diffused to remove bacteria and dirt in a wide range such as the toilet bowl 800, the toilet seat 200 and the toilet lid 300. It can be suppressed.

In the embodiment, the control device 405 determines the amount of sterilized water landed per unit area of the sterilized water in the toilet seat portion 200 and the sterilization on the upper surface 806 of the rim portion 805 in one mist mode (for example, one after mist mode). Each of the amount of water landed per unit area of water is smaller than the amount of water landed per unit area of sterilized water in the bowl portion 801 and larger than the amount of water landed per unit area of sterilized water on the inner wall surface 807 of the rim portion 805. The spraying device 481 is controlled so as to be small.

That is, according to the embodiment, in one mist mode, the control device 405 relatively increases the amount of sterilized water landing on the inner wall surface 807 of the bowl portion 801 and the rim portion 805. By landing a large amount of disinfectant water mist on the inner wall surface 807 of the bowl portion 801 and the rim portion 805, which have a large dirt load and a high tolerance for wetting, the generation of bacteria and dirt can be suppressed.

Further, according to the embodiment, in one mist mode, the control device 405 relatively reduces the amount of sterilized water landing on the upper surface 806 of the toilet seat portion 200 and the rim portion 805. Since the upper surface 806 of the toilet seat portion 200 and the rim portion 805 has a relatively small dirt load, bacteria and dirt can be suppressed by landing a relatively small amount of sterilized water.

Further, by reducing the amount of sterilized water landing on the upper surface 806 of the toilet seat portion 200 and the rim portion 805 having a low tolerance for wetting, the upper surface 806 of the toilet seat portion 200 and the rim portion 805 can be dried in a short time. .. This makes it possible to prevent the disinfectant water from touching the user's skin or dripping out of the toilet bowl.

As described above, according to the embodiment, the disinfectant water touches the user's skin while suppressing bacteria and stains in a wide range such as not only the bowl portion 801 of the toilet bowl but also the rim portion 805 and the toilet seat portion 200. It can cause discomfort and prevent the disinfectant water from dripping out of the toilet bowl.

For example, in the control device 405, the amount of water landing on the toilet seat portion 200 (the amount of water landing per unit area of the disinfectant water on the toilet seat portion) in one mist mode is such that the disinfectant water that has landed on the toilet seat portion 200 drips. The spraying device 481 is controlled so that the amount of water landing does not occur. Further, in the control device 405, in one mist mode, the amount of water landing on the upper surface 806 of the rim portion 805 (the amount of water landing per unit area of the disinfected water on the upper surface of the rim portion) reaches the upper surface 806 of the rim portion 805. The spraying device is controlled so that the amount of sterilized water that has been spilled does not drip and stays.

In this way, the sterilized water stays on the upper surface 806 of the toilet seat portion 200 and the rim portion 805, which have a small stain load, without dripping, so that the oxidative decomposition action and the bleaching action of the sterilized water can be secured for a long time. It is possible to suppress the generation of bacteria and dirt. Further, by setting the amount of water landing on the upper surface 806 of the toilet seat portion 200 and the rim portion 805 to be the amount of water landing on which the sterilized water stays, the risk of the sterilized water dripping out of the toilet bowl can be reduced.

Further, in the control device 405, the amount of water landing on the bowl portion 801 (the amount of water landing per unit area of the disinfectant water in the bowl portion) in one mist mode is such that the disinfectant water landed on the bowl portion 801 drips. The spraying device 481 is controlled so that the amount of water landed is the same. Further, in the control device 405, the amount of water landing on the inner wall surface 807 of the rim portion 805 (the amount of water landing per unit area of the disinfected water on the inner wall surface of the rim portion) in one mist mode is the inner wall surface of the rim portion 805. The spraying device 481 is controlled so that the amount of the disinfectant water that has landed on the 807 is the amount of water that drips.

In this way, by dripping the disinfectant water on the inner wall surface 807 of the bowl portion 801 and the rim portion 805 having a large dirt load, not only the oxidative decomposition action and the bleaching action but also the action of washing away the dirt with the disinfectant water is performed. It can be used. As a result, the generation of bacteria and stains can be suppressed more effectively than when the sterilized water is retained.

In addition, "dripping" means that water adhering to the surface of an object (for example, sterilized water) flows down. The range of "dripping" includes the flow of water droplets or water film due to its own weight or vibration caused by the operation of the toilet device.

For example, in the control device 405, the amount of water landing on the toilet seat 200 does not allow the disinfectant water that has landed on the toilet seat 200 to drip when the toilet seat 200 is rotated by the toilet seat motor 511 (rotating device). The spraying device is controlled so that the amount of water landing stays.

As a result, even when the toilet seat portion 200 is rotated, the sterilized water can be prevented from dripping, so that the oxidative decomposition action and the bleaching action of the sterilized water can be secured for a long time. And the generation of dirt can be further suppressed. Further, by setting the amount of water landing on the toilet seat portion 200 to be the amount of water landing on which the sterilized water stays, the risk of the sterilized water dripping to an unintended portion can be reduced.

The amount of water landing as described above can be controlled by controlling the particle size of the mist sprayed from the spraying device 481. For example, in the control device 405, the particle size of the disinfectant water mist sprayed on the toilet seat portion 200 and the particle size of the disinfectant water mist sprayed on the upper surface 806 of the rim portion 805 are each set to the bowl portion 801. The spraying device 481 is controlled so as to be smaller than the particle size of the mist of the disinfectant water sprayed on the rim portion 805 and smaller than the particle size of the mist of the disinfectant water sprayed on the inner wall surface 807 of the rim portion 805. The particle size of the mist of the sterilized water sprayed on each site is, for example, the particle size of the mist landing on each site.

Since the particle size of the mist of the disinfectant water landing on the upper surface 806 of the toilet seat portion 200 and the rim portion 805 is small, it is possible to prevent the disinfectant water landing on the upper surface of the toilet seat portion and the rim portion from dripping. .. Further, since the particle size of the mist of the disinfectant water landing on the inner wall surface 807 of the bowl portion 801 and the rim portion 805 is large, the disinfectant water landing on the inner wall surface 807 of the bowl portion 801 and the rim portion 805 is a liquid. It becomes easy to drip, and the action of washing away dirt can be improved.

A method for measuring the amount of water landing (average amount of water landing) will be described with reference to FIGS. 19 (a) to 19 (e).
19 (a) to 19 (e) are plan views illustrating the toilet device according to the embodiment. 19 (a) and 19 (b) show the front surface 203 of the toilet seat portion 200 and the back surface 204 of the toilet seat portion 200, respectively. The surface 203 is a seating surface on which the user sits, and faces upward when the toilet seat portion 200 is closed. The back surface 204 is a surface opposite to the front surface 203, and faces downward when the toilet seat portion 200 is closed.

As shown in FIG. 19A, the surface 203 has a tip region 203F located on the front side, a lateral region 203R located on the right side, and a side located on the left side when the toilet seat portion 200 is closed. It has a square region 203L. The area of each area shall be 20 square centimeters (cm ² ).
The amount of water landing per unit area in the tip area 203F (g / cm ² ), the amount of water landing per unit area in the side area 203R (g / cm ² ), and the amount of water landing per unit area in the side area 203L (g). The average with / cm ² ) is taken as the amount of water landing per unit area on the surface 203 (average water landing amount (g / cm ² )).

As shown in FIG. 19B, the back surface 204 has a tip region 204F located on the front side, a lateral region 204R located on the right side, and a side located on the left side when the toilet seat portion 200 is closed. It has a square area 204L and. The area of each area shall be 20 square centimeters (cm ² ).
The amount of water landing per unit area in the tip area 204F (g / cm ² ), the amount of water landing per unit area in the side area 204R (g / cm ² ), and the amount of water landing per unit area in the side area 204L (g). The average with / cm ² ) is taken as the amount of water landing per unit area on the back surface 204 (average amount of water landing (g / cm ² )).

The water landing amount per unit area (average water landing amount (g / cm ² )) in the toilet seat portion 200 is an average of the water landing amount per unit area on the front surface 203 and the water landing amount per unit area on the back surface 204.

As shown in FIG. 19 (c), the upper surface 806 of the rim portion 805 has a tip region 806F located on the front side, a side region 806R located on the right side, and a side region 806L located on the left side. Have. The area of each area shall be 20 square centimeters (cm ² ).
The amount of water landing per unit area (average water landing amount (g / cm ² )) on the upper surface 806 of the rim portion 805 is the amount of water landing per unit area (g / cm ² ) in the tip region 806F and the unit in the side region 806R. It is the average of the amount of water landing per area (g / cm ² ) and the amount of water landing per unit area in the lateral region 806L (g / cm ² ).

As shown in FIG. 19D, the inner wall surface 807 of the rim portion 805 includes a tip region 807F located on the front side, a lateral region 807R located on the right side, and a lateral region 807L located on the left side. , Have. The area of each area shall be 20 square centimeters (cm ² ).
The amount of water landing per unit area (average water landing amount (g / cm ² )) on the inner wall surface 807 of the rim portion 805 is the amount of water landing per unit area (g / cm ² ) in the tip region 807F and the lateral region 807R. It is the average of the amount of water landing per unit area (g / cm ² ) and the amount of water landing per unit area in the lateral area 807L (g / cm ² ).

As shown in FIG. 19 (e), the bowl portion 801 (the portion of the inner surface of the bowl portion 801 in which no accumulated water is provided) has a tip region 801F located on the front side and a lateral side located on the right side. It has a region 801R and a lateral region 801L located on the left side. The area of each area shall be 20 square centimeters (cm ² ).
The amount of water landing per unit area in the bowl portion 801 (average water landing amount (g / cm ² )) is the amount of water landing per unit area in the tip region 801F (g / cm ² ) and the amount of water landing per unit area in the side region 801R. It is the average of the amount of water landing (g / cm ² ) and the amount of water landing per unit area in the lateral region 801L (g / cm ² ).

Each region shown in FIGS. 19A to 19E (203F, 203L, 203R, 204F, 204L, 204R, 806F, 806L, 806R, 807F, 807L, 807R, 801F, 801L, and 801R, respectively). The measurement of the amount of water landing per unit area in the above is as follows.
First, after spraying the mist, a certain area is wiped with a paper, and the mist that has landed on the area is absorbed by the paper. Next, the difference between the weight of the paper before water absorption and the weight of the paper after water absorption is defined as the amount of mist (water landing amount) that has landed on the region. By dividing the amount of water landing by the area of the area (the area wiped off), the amount of water landing per unit area in the area is calculated.

FIG. 20 is a table illustrating the amount of water landed on the mist in the after mist mode.
In FIG. 20, the magnitude relationship of the amount of water landed per unit area in each region shown in FIGS. 19 (a) to 19 (e) is divided into four stages of “large”, “medium”, “small” and “minimal”. Indicated by.
For example, the amount of water landed per unit area in the tip region and the lateral region of the upper surface 806 of the rim portion 805 is “medium”. On the other hand, the amount of water landing per unit area in the tip region and the lateral region of the surface 203 of the toilet seat portion 200 is "minimal".

That is, in the control device 405, the amount of sterilized water on the upper surface 806 of the rim portion 805 per unit area is larger than the amount of sterilized water on the surface 203 of the toilet seat portion 200. Controls the spray device 481. Bacteria on the upper surface 806 of the rim portion 805 due to a larger amount of sterilized water landing on the upper surface 806 of the rim portion 805, which is less likely to be directly touched by the user than the surface 203 of the toilet seat portion 200 that the user directly touches. And the generation of dirt can be suppressed.

Further, when the user urinates while sitting on the toilet seat portion 200, urine or sewage splashed by the bowl portion 801 or the pooled water 801w tends to adhere to the front side of the back surface 204 of the toilet seat portion 200. Therefore, the front side of the back surface 204 of the toilet seat portion 200 is a portion where the dirt load is larger than that of the side surface side of the back surface 204 of the toilet seat portion 200. On the other hand, as shown in FIG. 20, the amount of water landing per unit area in the tip region of the back surface 204 of the toilet seat portion 200 is “large”, and per unit area in the lateral region of the back surface 204 of the toilet seat portion 200. The amount of water landing on the toilet is "small".

That is, when the front side of the opening 200a of the toilet seat portion 200 is set as the front portion and the side portion of the opening 200a is set as the side portion, the control device 405 sets the disinfectant water in the front portion of the back surface 204 of the toilet seat portion 200. The spraying device 481 is provided so that the amount of water landed per unit area (average water landing amount) is larger than the amount of water landed per unit area (average water landing amount) of the disinfected water at the lateral portion of the back surface 204 of the toilet seat portion 200. Control. By increasing the amount of sterilized water landing on the front side as compared with the side side, it is possible to further suppress the generation of bacteria and dirt on the back surface 204 of the toilet seat portion 200.

Further, since it is less likely that the user directly touches the back surface 204 of the toilet seat portion 200 as compared with the front surface 203, the back surface 204 of the toilet seat portion 200 is a portion having a high tolerance for wetting. Further, urine or sewage that hits the bowl portion 801 or the accumulated water 801w and splashes tends to adhere to the back surface 204 of the toilet seat portion 200. Therefore, the back surface 204 of the toilet seat portion 200 has a larger dirt load than the front surface 203 of the toilet seat portion 200. On the other hand, as shown in FIG. 20, in the control device 405, the amount of water landed per unit area of the sterilized water on the back surface 204 of the toilet seat portion 200 is per unit area of the sterilized water on the front surface 203 of the toilet seat portion 200. The spraying device 481 is controlled so as to be larger than the amount of water landed on the toilet.

That is, the amount of sterilized water landing on the back surface 204 of the toilet seat portion 200 is larger than that of the front surface 203 of the toilet seat portion 200. By increasing the amount of sterilized water landing on the back surface 204 of the toilet seat portion 200, it is possible to suppress the generation of bacteria and dirt.

Further, as shown in FIG. 20, the amount of water landing per unit area in the tip region and the lateral region of the inner wall surface 807 of the rim portion 805 is “large”, and the unit in the tip region and the side region of the bowl portion 801 is The amount of water landed per area is "large". However, the amount of sterilized water per unit area that directly lands on the tip region and the lateral region of the bowl portion 801 is "medium".

That is, in the control device 405, the amount of water landing per unit area (average water landing amount) of the disinfectant water directly landing on the inner wall surface 807 of the rim portion 805 is the unit area of the disinfectant water directly landing on the bowl portion 801. The spraying device 481 is controlled so as to be larger than the amount of water landing per unit (average amount of water landing). The amount of sterilized water that directly lands does not include the amount of sterilized water that flows down from above.

The wash water for cleaning the toilet bowl flows through the bowl portion 801 and the wash water for cleaning the toilet bowl does not flow through the inner wall surface 807 of the rim portion 805. Therefore, the inner wall surface 807 of the rim portion 805 has a larger dirt load than the bowl portion 801. Therefore, as described above, by increasing the amount of sterilized water that directly lands on the inner wall surface 807 of the rim portion 805, which has a relatively large dirt load, the generation of bacteria and dirt on the inner wall surface 807 can be further suppressed. Can be done.

21 (a) and 21 (b) are perspective views illustrating the method for measuring the particle size according to the embodiment.
A laser diffraction method is used to measure the particle size. When a fine particle is irradiated with a laser, diffracted scattered light is generated from the fine particle in various directions. The intensity of diffracted scattered light has a spatial pattern in the direction in which the light is emitted. This spatial pattern is called a light intensity distribution pattern. The light intensity distribution pattern changes depending on the particle size of the fine particles. The particle size can be calculated by detecting the light intensity distribution pattern by utilizing the correlation between the particle size of the fine particles and the light intensity distribution pattern.

As shown in FIGS. 21 (a) and 21 (b), the particle size measuring device 600 includes a light emitting unit 601 and a light receiving unit 602. The light receiving unit 602 is provided so as to be able to receive the laser emitted by the light emitting unit 601. In the measurement of the particle size, the laser emitted by the light emitting unit 601 is applied to the mist M sprayed from the spraying device 481. The light receiving unit 602 receives the diffracted scattered light generated by the irradiation of the laser. This makes it possible to detect the light intensity distribution pattern. Aerotrack LDSA-3500A (manufactured by Microtrack Bell Co., Ltd.) can be used as the measuring device.

22 (a) and 22 (b) are a plan view and a cross-sectional view illustrating a part of the toilet device according to the modified example of the embodiment.
FIG. 22A is a plan view of a part of the toilet device as viewed from the front. 22 (b) is a cross-sectional view taken along the line AA shown in FIG. 22 (a).
As shown in FIGS. 22A and 22B, in this example, the mist damper 482 is not provided, and the casing 400 is provided with a slit S. The spraying device 481 is arranged in the casing 400, and the slit S is located in the lower front part of the spraying device 481. For example, the height (position in the vertical direction) of the upper end surface S1 of the slit S is the same as the height of the bottom surface B1 of the disk 481b, and the upper end surface S1 and the bottom surface B1 are on the same plane. Alternatively, the upper end surface S1 may be lower than the bottom surface B1.

The upper surface of the disc 481b is tilted from the horizontal, and the disc 481b sprays the mist M slightly downward from the horizontal. The mist M sprayed from the disk 481b passes through the slit S and is sprayed into the bowl portion 801. As a result, since the mist damper 482 as shown in FIG. 5 is not provided, it is possible to prevent dirt Y such as urine from adhering to the spray device 481 without impairing the design and cleanability of the toilet device.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. The above-mentioned embodiments which have been appropriately designed by those skilled in the art are also included in the scope of the present invention as long as they have the features of the present invention. For example, the shape, size, material, arrangement, installation form, and the like of each element included in the toilet bowl, the toilet seat device, and the like are not limited to those exemplified, and can be appropriately changed.
Further, the elements included in each of the above-described embodiments can be combined as much as technically possible, and the combination thereof is also included in the scope of the present invention as long as the features of the present invention are included.

10 Toilet appliance, 100 toilet seat device, 110-113 flow path, 200 toilet seat, 200a opening, 203 surface, 203F tip area, 203L side area, 203R side area, 204 back side, 204F tip area, 204L side area, 204R Side area, 300 toilet lid, 400 casing, 402 detection sensor, 403 human body detection sensor, 404 seating detection sensor, 405 control device, 431 electromagnetic valve, 450 sterilization device, 472 switching valve, 473 nozzle, 474 spout, 476 Nozzle Motor, 478 Nozzle Cleaning Room, 479 Nozzle Damper, 481 Sprayer, 481a Motor, 481b Disc, 481c Water Supply Port, 482 Mist Damper, 500 Manual Operation Unit, 511 Toilet Seat Motor, 512 Toilet Lid Motor, 513 Blower Hot air heater, 515 toilet seat heater, 516 blower damper, 516a opening, 600 measuring device, 601 light emitting part, 602 light receiving part, 800 toilet bowl, 801 bowl part, 801F tip area, 801L side area, 801R side area, 801w Reservoir, 805 rim, 806 top surface, 806F tip area, 806L side area, 806R side area, 807 inner wall surface, 807F tip area, 807L side area, 807R side area, 811 bowl water inlet, M, M3 Mist, M1 1st mist, M2 2nd mist, S slit, T1 predetermined time, T2 predetermined time, U1 1st updraft, U2 2nd updraft

Claims (6)

It is a toilet seat device installed on the top of the toilet bowl.
The toilet seat where the user sits and the toilet seat
A sterilizer that produces sterilized water and a sterilizer
A spraying device that sprays the mist of disinfectant water or the mist of tap water,
The detection sensor that detects the user and
A manual operation unit for the user to spray the disinfectant water,
A control device that controls the sterilization device and the spray device based on the detection information of the detection sensor or the operation information of the manual operation unit.
Equipped with
The control device is
After the detection sensor changes from the state in which the user is not detected to the state in which the user is detected, the disinfection water or tap water is automatically removed so as not to land on the toilet seat portion. A premist mode that sprays a mist of fungal water or a mist of tap water into the toilet bowl, and
A manual mist mode in which the mist of the disinfectant water is sprayed onto the toilet seat after the user operates the manual operation unit.
Is feasible and
The spraying device so that the particle size of the mist of the disinfectant water sprayed in the manual mist mode is smaller than the particle size of the mist of the disinfectant water or the mist of the tap water sprayed in the premist mode. A toilet seat device characterized by controlling . Further equipped with a blower device for blowing air into the toilet bowl,
The spray device is arranged below the toilet seat portion in a state where the toilet seat device is installed on the upper part of the toilet bowl, and the mist of the disinfectant water or the mist of the tap water is placed in the toilet bowl. It is configured to spray towards
In the manual mist mode, the blower is operated in a state where the mist of the disinfectant water is sprayed into the toilet bowl by the spray device, and the mist of the disinfectant water is raised toward the toilet seat portion. The blower is controlled so as to generate a first updraft capable of
In the premist mode, the disinfectant water mist or the tap water mist is sprayed into the toilet bowl without generating the first updraft, and the disinfectant water mist or the tap water mist is sprayed on the spray device. The toilet seat device according to claim 1 , wherein the blower is controlled so that the mist of tap water does not rise toward the toilet seat portion. The toilet seat device according to claim 2 , wherein the premist mode stops the operation of the blower device. The premist mode activates the blower to generate a second updraft.
The toilet seat device according to claim 2 , wherein the flow velocity of the second updraft is lower than the flow velocity of the first updraft. The toilet seat device according to any one of claims 2 to 4 , wherein the spray device sprays the mist of the disinfectant water or the mist of the tap water radially in a top view. A toilet lid that can be opened and closed and that covers the toilet seat from above in the closed state.
A motor for the toilet lid that opens and closes the toilet lid electrically,
Equipped with
One of claims 1 to 5 , wherein the control device executes the manual mist mode with the toilet lid closed, and executes the premist mode with the toilet lid open. Toilet seat device described in.

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