CN111615352A

CN111615352A - Toilet device

Info

Publication number: CN111615352A
Application number: CN201980009373.6A
Authority: CN
Inventors: 矶村隆秀; 堀内启史; 片山透; 竹村贤司; 鸟饲优; 田中伸幸
Original assignee: Aisin Seiki Co Ltd; Lixil Corp
Current assignee: Lishu Group Co.,Ltd.; Aisin Corp
Priority date: 2018-01-22
Filing date: 2019-01-15
Publication date: 2020-09-01
Also published as: US20210045594A1; DE112019000473T5; JP2019126406A; WO2019142771A1; JP7028655B2

Abstract

A toilet device provided in a toilet bowl, comprising: a main body fixed to an upper surface of the toilet bowl; a toilet seat supported by the main body; and a reflective optical sensor provided in the toilet seat, the optical sensor including a light emitting portion that emits light from a surface of the toilet seat and a light receiving portion that can receive reflected light of the light emitted by the light emitting portion. Therefore, the user of the toilet seat apparatus can be appropriately detected by the optical sensor provided in the toilet seat. Further, by providing the optical sensor in the toilet seat instead of the main body, it is not necessary to design the shape of the toilet seat so as to expose the optical sensor.

Description

Toilet device

Technical Field

The present invention relates to a toilet seat apparatus.

Background

Conventionally, as such a toilet device, there has been proposed a toilet device including a main body fixed to the rear of the upper surface of the toilet, a toilet seat and a toilet lid rotatably supported by the main body and openable and closable, and an optical sensor provided in the main body and capable of detecting a user (human body) (see, for example, patent document 1). In this toilet seat apparatus, the shape of the rear end side in the closed state of the toilet seat and the toilet cover is a shape in which both right and left end portions supported by the main body extend rearward from the central portion, whereby the optical sensor is exposed regardless of whether the toilet seat and the toilet cover are in the open state or the closed state. Thus, the optical sensor can detect whether the toilet seat or the toilet cover is in the open state or the closed state.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 4467866

In the toilet seat apparatus described above, since the shape of the toilet seat or the like is fixed to the above shape so as to be detectable by the optical sensor, the degree of freedom in designing the toilet seat is limited. In such a toilet seat apparatus, there is room for improvement because demands for cleanliness and beauty have been increased due to changes in consciousness of users in recent years.

Disclosure of Invention

The present invention has as its main object the ability to perform appropriate detection by an optical sensor.

The present invention adopts the following means to achieve the above-described main object.

A toilet apparatus according to the present invention is a toilet apparatus provided in a toilet, and includes: a main body fixed to an upper surface of the toilet bowl; a toilet seat supported by the main body; and a reflective optical sensor provided in the toilet seat, the optical sensor including a light emitting portion that emits light from a surface of the toilet seat, and a light receiving portion that can receive reflected light of the light emitted by the light emitting portion.

In the toilet seat device of the present invention, the reflective optical sensor is provided in the toilet seat supported by the main body, and the optical sensor includes the light emitting portion that emits light from the surface of the toilet seat and the light receiving portion that can receive the reflected light of the light emitted by the light emitting portion, and therefore, it is possible to appropriately detect entry of a user into the room and sitting on the seat. The optical sensor may be a seating sensor that detects that the user is seated on the toilet seat.

In the toilet seat apparatus of the present invention, the toilet seat may include: a sitting portion for a user to sit; and an extension portion that extends from the seating portion to the rear body side so as to cover the body, wherein the optical sensor is provided in the extension portion. In addition, the extension may have: an inclined portion that is smoothly connected with the seating portion and is inclined at an upward inclination from the seating portion toward the rear; and a flat portion extending rearward from an upper end of the inclined portion in a substantially flat shape, wherein the optical sensor is provided in the inclined portion. Thus, the optical sensor can be provided at a position suitable for detection without interfering with the sitting of the user, and the toilet seat can be shaped to cover the main body. Here, when the optical sensor is provided in the main body of the toilet seat apparatus and the shape of the toilet seat is such that the optical sensor is exposed, a gap between the toilet seat and the main body is also exposed, and dirt may accumulate in the gap. Since the toilet seat is provided as the cover body, the gap is prevented from being exposed, and thus the cleanness of the toilet seat apparatus can be maintained. Further, since the appearance of the toilet seat apparatus can be made neat by making the gap invisible, the appearance of the toilet seat apparatus can be improved.

In the toilet seat device according to the present invention, the hinge portion may be provided so as to extend from the center side in the width direction from one of the toilet seat and the main body toward the other, and be pivotally supported by being fitted into a recess provided in the other of the toilet seat and the main body, and the hinge portion may rotatably support the toilet seat. Thus, the hinge portion is fitted into the recess and pivotally supported, and thus the toilet seat is stably supported with less rattling. Therefore, even when the weight of the toilet seat is increased due to the shape of the toilet seat covering the main body, the opening and closing operation of the toilet seat can be stabilized. The toilet seat may be rotatably supported by the main body not only at the hinge portion but also at both ends in the width direction. Thus, the toilet seat is supported more stably by the both end sides and the center side in the width direction.

In the toilet seat device according to the present invention, the hinge portion may be pivotally supported by a hollow shaft-like hinge shaft, and the wiring of the optical sensor may be routed between the toilet seat and the main body through the inside of the hinge shaft. In this way, when the optical sensor is installed in the toilet seat, the wiring of the optical sensor can be easily routed.

In the toilet seat device according to the present invention, the toilet seat may be rotatably supported by the main body at both ends in the width direction, and dampers may be provided at least two locations among locations where the toilet seat is supported by the main body at both ends and locations where the hinge portion is pivotally supported by the inner walls on both sides of the recess. Thus, abrupt opening and closing operations of the toilet seat can be appropriately suppressed.

In the toilet seat device according to the present invention, the toilet seat may be rotatably supported by the main body at both ends in the width direction, and dampers may be provided at three locations among locations where the toilet seat is supported by the main body at both ends and locations where the hinge portion is pivotally supported by the inner walls on both sides of the recess. Thus, abrupt opening and closing operations of the toilet seat can be appropriately suppressed.

In the toilet apparatus of the present invention, the toilet cover may be provided with a toilet cover. In this way, the position of the optical sensor provided in the toilet seat is not restricted by the toilet cover, and therefore the degree of freedom in designing the toilet seat can be further improved. In addition, the cost of the toilet seat can be reduced by not providing the toilet cover.

Drawings

Fig. 1 is an external perspective view of a toilet 1 to which a toilet device 10 is attached.

Fig. 2 is a schematic diagram showing the configuration of the toilet seat apparatus 10.

Fig. 3 is an enlarged view showing a main part of the toilet seat apparatus 10.

Fig. 4 is an external perspective view of the toilet seat device 10.

Fig. 5 is a sectional view showing a part of the internal structure of the toilet seat apparatus 10.

Fig. 6 is an external perspective view of the seating sensor 40.

Fig. 7 is an exploded perspective view of the seating sensor 40.

Detailed Description

Next, embodiments of the present invention will be explained.

Fig. 1 is an external perspective view of a toilet 1 to which a toilet device 10 is attached, fig. 2 is a configuration diagram schematically showing a configuration of the toilet device 10, fig. 3 is an enlarged view of a main portion of the toilet device 10, fig. 4 is an external perspective view of the toilet device 10, and fig. 5 is a sectional view showing a part of an internal configuration of the toilet device 10. In the present embodiment, the left-right direction, the front-back direction, and the up-down direction are as shown in the respective drawings. The structure disposed in the toilet seat device 10 is shown by a broken line in fig. 2, but is shown by a thick solid line in fig. 3 for convenience of illustration.

As shown in fig. 1, the toilet 1 is a western style toilet, and a toilet device 10 is provided on the upper surface of the toilet 1. The toilet seat device 10 includes: a toilet device main body 20 fixed to the rear of the upper surface of the toilet 1; and a toilet seat 30 pivotally supported to the toilet seat apparatus main body 20 so as to be openable and closable. The toilet seat device 10 is provided with a seating sensor 40 for detecting seating of a user (human body) and a state notification lamp 47 indicating a state of the toilet seat device 10 in the toilet seat 30. The toilet seat device 10 has a toilet lid structure without a toilet lid for covering the toilet seat 30. When the toilet seat 30 is in the closed state (see fig. 1) at the closed position, the surface that becomes the upper surface is defined as the front surface, and the surface that becomes the lower surface is defined as the rear surface. Fig. 2 to 4 show an open state in which the toilet seat 30 is in an open position. The toilet seat apparatus 10 includes an operation panel and the like for receiving user operations, but is not shown.

The toilet seat apparatus main body 20 includes: a plurality of (e.g., two) partial washing nozzles 22 that wash the user's parts; and a control device 24 for controlling the entire toilet seat device 10. The toilet seat device body 20 is formed in a substantially triangular prism shape, and a side surface 20a corresponding to the bottom surface of the triangular prism is formed in a substantially right triangular shape, and the toilet seat device body 20 has an inclined surface 20b inclined downward toward the front. The inclined surface 20b is provided with a right support block 25 and a left support block 26 having a substantially rectangular parallelepiped shape for supporting the toilet seat 3. The right support block 25 and the left support block 26 are arranged with a predetermined gap in the left-right direction (width direction of the toilet seat 30), and a recess 27 is formed therebetween. The right support block 25 and the left support block 26 are bilaterally symmetrical with each other with the recess 27 interposed therebetween, and the controller 24 is disposed in the left support block 26.

The toilet seat 30 includes: a seating portion 30a formed in a substantially annular shape and on which a user can sit; an inclined portion 30b smoothly connected to the seating portion 30a and inclined at an upward inclination from the seating portion 30a toward the rear; and a flat portion 30c extending rearward from the upper end of the inclined portion 30b to be substantially flat. That is, the toilet seat 30 is composed of a seating portion 30a, an inclined portion 30b extending rearward from the seating portion 30a, and a flat portion 30 c. The toilet seat 30 is integrally molded with the seat portion 30a, the inclined portion 30b, and the flat portion 30c, and the boundaries of the respective portions are not strictly defined. The toilet seat 30 incorporates a toilet seat heater 38, and the toilet seat heater 38 heats a seating surface, which is a surface of the seating portion 30 a. The inclined portion 30b is inclined along the inclined surface 20b of the toilet seat apparatus body 20, and a seating sensor 40 is provided at the upper side of the center in the left-right direction. The flat portion 30c is provided with a state notification lamp 47 at the center in the left-right direction. The toilet seat 30 covers the toilet seat apparatus main body 20 from above via the inclined portion 30b and the flat portion 30 c. The toilet seat 30 has a recessed block housing portion 32 formed on the back side of the inclined portion 30b and the flat portion 30c to house the right support block 25 and the left support block 26 of the toilet seat apparatus body 20 in the closed state. Side wall portions 34 constituting side walls of the inclined portion 30b and the flat portion 30c are formed on both end sides in the left-right direction of the block accommodating portion 32. A rotation shaft 34a is provided on the distal end (lower end in fig. 2) side of the side wall portion 34, and the toilet seat 30 is rotatably supported by the toilet seat apparatus main body 20 via the rotation shaft 34 a.

Further, the toilet seat apparatus 10 is provided with a center hinge 35 between the toilet seat apparatus main body 20 and the toilet seat 30. The center hinge 35 is composed of a rotating member 36 and a support member 37. The pivot member 36 is pivotally supported by being fitted between the inner wall portion 25a of the right support block 25 and the inner wall portion 26a of the left support block 26, which form the inner wall of the recess 27 of the toilet seat apparatus body 20. The support member 37 is connected to the rotating member 36 and to the bottom of the block receiving portion 32. A main damper 28 is provided on the inner wall portion 25a side of the right support block 25, and this main damper 28 applies rotational resistance to the pivot member 36 connected to the rotating shaft 36a disposed on the right side in the pivot member 36. The pivotal member 36 is connected to the toilet seat 30 via the support member 37, and therefore the main damper 28 applies rotational resistance to the toilet seat 30 at the rotational axis S1. The pivot member 36 is provided with a hinge shaft 36b, and the hinge shaft 36b is inserted into the inner wall portion 26a of the left support block 26 from the pivot member 36. Although detailed description is omitted, the hinge shaft 36b is inserted into unillustrated hinge barrels provided in the inner wall portion 26a and the rotary member 36, respectively, and is coupled to the hinge barrels so as to be relatively rotatable about the rotation axis S2, and the hinge shaft 36b is formed in a hollow shaft shape. The auxiliary damper 29 is provided on the right side wall portion 25b of the right support block 25, and the auxiliary damper 29 is coupled to the rotary shaft 34a of the right side wall portion 34 of the toilet seat 30 to apply a rotational resistance to the toilet seat 30 at the rotary shaft S3. Similarly, the auxiliary damper 29 is provided on the left side wall portion 26b of the left support block 26, and the auxiliary damper 29 is coupled to the rotating shaft 34a of the left side wall portion 34 of the toilet seat 30 to apply rotational resistance to the toilet seat 30 at the rotating shaft S4. The auxiliary damper 29 is configured to apply a smaller rotational resistance than the main damper 28. For convenience of explanation, the rotating shafts S1 to S4 are shown, but the rotating shafts S1 to S4 are coaxial shafts.

As shown in fig. 6 and 7, the seating sensor 4 includes a sensor body 41, a cover 42, a sensor cover 43, and a pad 44. The sensor body 41 includes a light emitting portion 40a that emits light such as infrared light, and a light receiving portion 40b that receives reflected light of the light emitted by the light emitting portion 40 a. The cover 42 is disposed between the sensor body 41 and the sensor cover 43 in order to prevent diffuse reflection of light in the sensor cover 43. The sensor cover 43 is formed of a light-transmitting material and attached to the sensor body 41. The spacer 44 is for preventing water from infiltrating into the sensor main body 41 side. The seating sensor 40 is mounted on a sensor fixing member 37a (see fig. 5) disposed in the support member 37 of the center hinge 35 in a state where the sensor cover 43 is attached to the sensor body 41 with the cover 42 interposed therebetween and the spacer 44 is placed on the sensor cover 43. Then, if the support member 37 is attached to the pivot member 36 in a state where the seating sensor 40 is mounted on the sensor fixing member 37a, the seating sensor 40 is accommodated in the sensor accommodating portion 33 (see fig. 4) provided at the bottom of the block accommodating portion 32 of the toilet seat 30 and is assembled into the toilet seat 30. Thereby, the seating sensor 40 can detect whether the user is seated on the toilet seat 30. When the seating sensor 40 is assembled in the toilet seat 30, the pad 44 is pressed against the back surface of the toilet seat 30 (the inclined portion 30b), and water can be prevented from entering the sensor body 41 side. The wiring 45 (see fig. 3) of the seating sensor 40 is routed so as to pass through the support member 37, the pivot member 36, the hinge shaft 36b, and the left support block 26, and is connected to the control device 24 disposed in the left support block 26. That is, the wire harness 45 is routed between the toilet seat 30 and the toilet seat apparatus main body 20 through the hollow hinge shaft 36 b.

The status notification lamp 47 is composed of a plurality of LEDs, and includes, for example: a power LED47a that lights up when power is supplied; a power-saving LED47b that is lit in a state in which the power-saving mode is set to suppress power consumption; and a service LED47c that is lit in a state during a prescribed service of the toilet seat apparatus 10. The power saving mode can be set by the operation panel or the like. The wiring 48 (see fig. 3) of these status notification lamps 47 is connected to the control device 24 by passing through the hollow hinge shaft 36b and being wound, similarly to the wiring 45 of the seating sensor 40. In addition, a wire 39 (refer to fig. 3) of the toilet seat heater 38 also passes through the hollow hinge shaft 36b and is wound to be connected to the control device 24.

Although not shown, the control device 24 is configured as a microcomputer including a CPU as a center, and includes a ROM, a RAM, an input/output port, and the like in addition to the CPU. A detection signal from the seating sensor 40, an operation signal from an operation panel, not shown, and the like are input to the control device 24 via the input port. Further, a drive signal to the private parts washing nozzle 22, a drive signal to the toilet seat heater 38, a lighting signal to each LED of the status notification lamp 47, and the like are output from the control device 24 via the output port.

In the toilet seat device 10 configured as described above, whether or not the user is seated on the toilet seat 30 is detected by the detection signal from the seating sensor 40. When the detection signal from the seating sensor 40 detects seating, the control device 24 outputs a drive signal to the seat heater 38 based on the setting of the operation panel to heat the seating surface of the toilet seat 30 or prepare for ejection of washing water from the private parts washing nozzle 22. When the seating sensor 40 detects that the user is seated, the control device 24 ejects the washing water from the local washing nozzle 22 based on the operation of the operation panel. When the seating is not detected based on the detection signal from the seating sensor 40, the control device 24 terminates the heating of the seating surface of the toilet seat 30 by the toilet seat heater 38. Since the toilet seat device 10 has the seat sensor 40 provided on the toilet seat 30 with the toilet lid-less structure, the seat sensor 40 can appropriately detect sitting when the toilet seat 30 is in the closed state. Further, since the seating sensor 40 can be set to not detect seating normally when the toilet seat 30 is in the open state, it is possible to prevent erroneous detection of the user and malfunction of the toilet seat apparatus 10, for example, when a male urinates.

In the toilet seat device 10 described above, since the seating sensor 40 is provided on the toilet seat 30, the user can detect when the toilet seat 30 is in the closed position, and therefore, it is not necessary to design the toilet seat 30 in a shape in which the seating sensor is exposed, as in the case where the seating sensor is provided on the toilet seat device main body 20. Further, since the seating sensor 40 is provided in the toilet seat 30 instead of the toilet seat apparatus main body 20, it is not necessary to design the toilet seat 30 in a shape in which the seating sensor 40 is exposed, as in the case where the seating sensor 40 is provided in the toilet seat apparatus main body 20. Therefore, the user can be appropriately detected by the seating sensor 40, and the degree of freedom in designing the toilet seat 30 can be improved.

The toilet seat 30 has an inclined portion 30b and a flat portion 30c extending rearward from the seating portion 30a, and the toilet seat 30 covers the toilet seat apparatus body 20 when in the closed position. Therefore, the gap between the toilet seat 30 and the toilet seat apparatus main body 20 is prevented from being exposed, the cleanness of the toilet seat apparatus 10 can be maintained, the appearance of the toilet seat apparatus 10 can be made neat, and the beauty of the toilet seat apparatus 10 can be improved.

Further, the toilet seat 30 is supported at the center side in the left-right direction (width direction) by the center hinge 35, and the center hinge 35 is fitted into the recess 27 to suppress the rattling, so that even when the toilet seat 30 is increased in weight due to the shape covering the toilet seat apparatus main body 20, the opening and closing operation of the toilet seat 30 can be stabilized. Further, since the dampers (the main damper 28 and the auxiliary damper 29) are provided at three locations of the rotation shafts S1, S3, and S4, abrupt opening and closing operations of the toilet seat 30 can be appropriately suppressed.

In addition, the wiring 45 of the seating sensor 40 can be easily routed through the inside of the hinge shaft 36 b. In order to appropriately detect the sitting of the user, the sitting sensor 40 is usually provided on the center side in the left-right direction of the toilet seat 30, and therefore, by passing the wire 45 through the hinge shaft 36b of the center hinge 35, the wire 45 can be prevented from exceeding a required length, and can be effectively routed. In addition, since the wiring 39 of the toilet seat heater 38 and the wiring 48 of the status notification lamp 47 also pass through the hinge shaft 36b, the wirings can be collectively routed.

Further, since the toilet seat apparatus 10 is configured without a toilet lid, the position of the seating sensor 40 is not limited by the toilet lid, and the degree of freedom in designing the toilet seat 30 can be further improved. Further, the cost of the toilet seat apparatus 10 can be reduced by providing the toilet seat cover.

In the above-described embodiment, the seating sensor for detecting seating on the toilet seat 30 is exemplified as the optical sensor, but the present invention is not limited thereto, and a room entrance detection sensor or the like for detecting entrance of a user into a room in which the toilet seat apparatus 10 is installed may be used. Further, the seat sensor and the entry detection sensor may be provided in the toilet seat 30, and the plurality of optical sensors may be provided in the toilet seat 30.

In the embodiment, the toilet seat device 10 is configured as a toilet lid having no toilet lid for covering the toilet seat 30, but the present invention is not limited thereto, and the toilet seat device 10 may be configured as a toilet lid. The toilet seat 30 is configured to cover the toilet seat apparatus main body 20, but is not limited thereto, and the toilet seat 30 may be configured to expose the toilet seat apparatus main body 20 without covering the toilet seat apparatus main body 20.

In the embodiment, the dampers are provided at three of the four positions of the rotating shafts S1 to S4, but the present invention is not limited thereto, and the dampers may be provided at least two positions. Alternatively, the damper may be provided at only one location, but in consideration of an increase in weight of the toilet seat 30 when covering the toilet seat apparatus main body 20, it is preferable to provide the damper at least two locations.

In the embodiment, two types of dampers (the main damper 28 and the auxiliary damper 29) having different magnitudes of the rotational resistance to be applied to the toilet seat 30 are provided, but the present invention is not limited thereto, and a plurality of dampers having the same magnitude of the rotational resistance to be applied may be provided, and for example, dampers (corresponding to the main dampers) may be provided on both end sides.

In the embodiment, the wiring 45 of the seating sensor 40 is passed through the hollow hinge shaft 36b of the center hinge 35, that is, the wiring 45 is routed from the center portion of the toilet seat 30 to the toilet seat apparatus main body 20, but the present invention is not limited thereto, and the wiring 45 may be routed from the left and right end portions of the toilet seat 30 to the toilet seat apparatus main body 20. The heater wire 39 of the toilet seat heater 38 and the lamp wire 48 of the status notification lamp 47 are inserted into the hinge shaft 36b, but the present invention is not limited thereto, and only the wire 45 of the seating sensor 40 may be inserted. The configuration is not limited to the configuration in which the heater 38 and the state notification lamp 47 are provided, and the heater 38 and the state notification lamp 47 may not be provided.

In the embodiment, the center hinge 35 is coupled (fixed) to the toilet seat 30 and pivotally supported in the recess 27 provided in the toilet seat apparatus main body 20, but the present invention is not limited thereto, and the center hinge 35 may be coupled to the toilet seat apparatus main body 20 and pivotally supported in the recess provided in the toilet seat 30. The toilet seat 30 is supported on both end sides and a center side in the left-right direction, but is not limited thereto, and may be supported on either end side or the center side. However, in consideration of the increase in weight when the toilet seat 30 is provided to cover the toilet seat apparatus main body 20, it is preferable that the toilet seat be supported on both end sides and the center side. Further, the hinge portion may not be fitted into the recess.

The correspondence between the main elements of the present embodiment and the main elements described in the section of the summary of the invention will be described. The toilet seat device 10 of the present embodiment corresponds to the "toilet seat device" of the present invention, the toilet seat device main body 20 corresponds to the "main body", the toilet seat 30 corresponds to the "toilet seat", and the seating sensor 40 corresponds to the "optical sensor". The seating portion 30a corresponds to a "seating portion", and the inclined portion 30b and the flat portion 30c correspond to an "extending portion". The recess 27 corresponds to a "recess", the center hinge 35 corresponds to a "hinge portion", and the hinge shaft 36b corresponds to a "hinge shaft". The wiring 45 corresponds to "wiring of an optical sensor". The main damper 28 and the auxiliary damper 29 correspond to "dampers".

The correspondence relationship between the main elements of the present embodiment and the main elements described in the section of the summary of the invention is an example for specifically describing the mode of the present embodiment for carrying out the invention described in the section of the summary of the invention, and therefore, the elements of the invention described in the section of the summary of the invention are not limited. That is, the invention described in the section of the summary of the invention should be explained based on the description in the section, and the present embodiment is only a specific example of the invention described in the section of the summary of the invention.

While the present invention has been described with reference to the specific embodiments, it is to be understood that the present invention is not limited to the embodiments and can be variously embodied without departing from the scope of the present invention.

Industrial applicability of the invention

The present invention can be used in the manufacturing industry of toilet seats.

Claims

1. A toilet device provided in a toilet, comprising:

a main body fixed to an upper surface of the toilet bowl;

a toilet seat supported by the main body; and

and a reflective optical sensor provided in the toilet seat, the optical sensor including a light emitting portion that emits light from a surface of the toilet seat, and a light receiving portion that can receive reflected light of the light emitted by the light emitting portion.

2. The toilet seat apparatus according to claim 1,

the toilet seat is provided with: a sitting portion for a user to sit; and an extending portion extending from the seating portion to the rear body side so as to cover the body,

the optical sensor is arranged on the extension part.

3. The toilet seat apparatus according to claim 2,

the extension has:

an inclined portion that is smoothly connected with the seating portion and is inclined at an upward inclination from the seating portion toward the rear; and

a flat portion extending rearward from an upper end of the inclined portion in a substantially flat shape,

the optical sensor is arranged on the inclined part.

4. The toilet seat apparatus according to claim 2 or 3,

the toilet seat includes a hinge portion that is provided so as to extend from a center side in a width direction from one of the toilet seat and the main body toward the other, and that is pivotally supported by being fitted into a recess provided in the other of the toilet seat and the main body, and that rotatably supports the toilet seat.

5. The toilet seat apparatus according to claim 4,

the hinge portion is pivotally supported by a hollow shaft-like hinge shaft,

the wiring of the optical sensor is routed between the toilet seat and the main body through the inside of the hinge shaft.

6. The toilet seat apparatus according to claim 4 or 5,

the toilet seat is rotatably supported by the main body at both ends in the width direction,

the toilet seat has dampers at least two locations, among locations where the toilet seat is supported by the main body at both end sides and locations where the hinge portion is pivotally supported by inner walls on both sides of the recess.

7. The toilet seat apparatus according to claim 4 or 5,

the toilet seat has dampers that apply rotational resistance to the toilet seat at three locations, among locations where the toilet seat is supported by the main body at the both end sides and locations where the hinge portion is pivotally supported by the inner walls on both sides of the recess.

8. The toilet seat apparatus according to any one of claims 1 to 7,

the toilet device is a toilet lid structure without a toilet lid for covering the toilet.

9. The toilet seat apparatus according to any one of claims 1 to 8,

the optical sensor is a seating sensor that detects that a user is seated on the toilet seat.