JP7432380B2 - toilet seat - Google Patents

Description

The present disclosure relates to a toilet seat.

Patent Document 1 discloses a toilet seat that includes a toilet seat body and a toilet seat cover attached to the seat surface of the toilet seat body. In the toilet seat cover, a cushion layer is provided between the surface layer, the air intake/exhaust layer, and the adhesive layer. The cushion layer is made of a low resilience material and has a thickness of, for example, 5 to 20 mm.

JP2007-229388A

In the configuration including the cushion layer disclosed in Patent Document 1, if the thickness of the cushion layer is increased, the toilet seat cover becomes larger, which may impede various functions such as opening and closing functions of the toilet seat and toilet lid. If the thickness of the cushion layer is made small so as not to interfere with various functions, the toilet seat will not be comfortable to sit on.

The present disclosure was completed based on the above circumstances, and an object of the present disclosure is to provide a toilet seat that is comfortable to sit on while ensuring its functionality.

The toilet seat of the present disclosure is a toilet seat including a cushion portion that constitutes at least a portion of a seating surface, the cushion portion having a thin portion in a front end region, and the cushion portion forming the seating surface. The thickness of the predetermined portion is greater than the thickness of the thin portion.

1 is a side view showing a toilet device according to Embodiment 1. FIG. FIG. 2 is a side view of the toilet seat and the toilet lid in a closed state, with the toilet lid cut away. FIG. 2 is a side view of the toilet seat and the toilet lid in an open state, with the toilet lid cut away. It is an exploded perspective view showing a cushion member and a toilet seat. FIG. 3 is a plan view showing a state in which the cushion member is attached to the toilet seat. 6 is a sectional view taken along the line VI-VI in FIG. 5. FIG. 6 is a sectional view taken along the line VII-VII in FIG. 5. FIG. 6 is a sectional view taken along line VIII-VIII in FIG. 5. FIG. 6 is a sectional view taken along line IX-IX in FIG. 5. FIG. FIG. 3 is an enlarged cross-sectional view of the cushion member. It is a sectional view showing a state where the cushion member is removed from the toilet seat and the toilet lid is closed. It is a sectional view showing a state where the cushion member is attached to the toilet seat and the toilet lid is open. It is a sectional view showing a state where the cushion member is attached to the toilet seat and the toilet lid is closed. FIG. 3 is a cross-sectional view showing a state in which a cushion member according to a second embodiment is attached to a toilet seat. FIG. 7 is a perspective view showing a cushion portion and a toilet seat main body according to Embodiment 3. FIG. 7 is an enlarged cross-sectional view of a cushion portion according to Embodiment 4.

<Embodiment 1>
As shown in FIG. 1, the toilet device 10 includes a toilet main body 11 and a toilet seat device 20. Hereinafter, in each component, the front-back direction, the left-right direction, and the up-down direction refer to the front-back direction, the left-right direction, and the up-down direction, respectively, as seen from the seated person sitting on the toilet device 10.

The toilet main body 11 has a toilet bowl portion. A rim 12 is formed at the upper end of the toilet bowl part. A toilet seat device 20 is installed above the toilet main body 11.

The toilet seat device 20 includes a device main body 21, a toilet seat 30, and a toilet lid 50, as shown in FIGS. 2 and 3. The device main body 21 is arranged at the rear of the toilet main body 11 and is fixed to the toilet main body 11. The device main body 21 includes a toilet seat shaft 22 that rotatably supports the toilet seat 30, and a toilet lid shaft 23 that rotatably supports the toilet lid 50. The device main body 21 includes functional parts such as a private parts cleaning device, a toilet bowl cleaning device, a toilet seat opening and closing device that automatically opens and closes the toilet seat 30, a toilet lid opening and closing device that automatically opens and closes the toilet lid 50, and a toilet seat heating device that warms the toilet seat 30. It houses a control unit 24 (see FIG. 1) that controls various sensors.

The toilet seat 30 is provided so as to be openable and closable. In the closed state shown in FIG. 2, the toilet seat 30 is placed in a reclining position along the top surface of the toilet main body 11. In the open state shown in FIG. 3, the toilet seat 30 is disposed in an upright position upwardly of the toilet main body 11 and slightly tilted backward. The toilet seat 30 rotates around the toilet seat shaft 22 between a closed state and an open state. For example, the toilet seat 30 is automatically opened and closed by being driven by a toilet seat opening/closing device built into the device body 21 based on a signal input from a remote controller or a detection signal from a human body detection sensor. rotate.

As shown in FIG. 4, the toilet seat 30 has a seating portion (toilet seat main body portion) 31 and a toilet seat hinge portion 36. The seating portion 31 and the toilet seat hinge portion 36 are integrally provided with a hard resin material.

The seating portion 31 has an annular shape with an open center, and is disposed along the rim 12 (see FIG. 2) when the toilet seat 30 is closed. When the toilet seat 30 is closed, the seating part 31 has an upper surface 32 facing upward, an inner surface 33 facing the inner circumference, an outer surface 34 facing the outer circumference, a lower surface facing downward, an inner surface 33, and a lower surface. and a cut surface formed between the outer surface 34 and the lower surface. The inner surface 33 and the outer surface 34 correspond to the side surfaces of the toilet seat 30. The lower end of the outer surface 34 is located closer to the outer periphery than the upper end of the outer surface 34 (see FIG. 9). The lower end of the outer surface 34 constitutes the maximum external shape of the toilet seat 30.

The toilet seat hinge portion 36 rotatably supports the toilet seat 30 with respect to the device main body 21. The toilet seat hinge portion 36 is assembled to the toilet seat shaft portion 22. A pair of toilet seat hinge parts 36 are provided at both ends of the seating part 31 in the left-right direction. The toilet seat hinge portion 36 has a shape that protrudes rearward from the rear end portion of the seating portion 31.

The toilet seat 30 includes a capacitive seat sensor 38 shown in FIG. The capacitive seat sensor 38 is a sensor for detecting that a person has touched the toilet seat 30 and determining whether or not the person is seated. In the toilet seat device 20, the functions of various functional parts are appropriately performed based on the determination result of whether or not a person is seated. The toilet seat 30 is a heated toilet seat having a heat generating member 39 shown in FIG. The heat generating member 39 is provided inside the hollow seating portion 31 and heats the upper surface 32 to a predetermined temperature.

As shown in FIGS. 2 and 3, the toilet lid 50 is provided above the toilet seat 30 so as to be openable and closable. In the closed state, the toilet lid 50 is arranged in a reclining position along the upper surface of the toilet main body 11. In the open state, the toilet lid 50 is arranged in an upright position upwardly of the toilet main body 11 and slightly tilted backward. The toilet lid 50 rotates around the toilet lid shaft 23 between a closed state and an open state. For example, the toilet lid 50 can be opened and closed by driving a toilet lid opening/closing device built into the main body 21 based on a signal input from a remote controller or a detection signal from a human body detection sensor. automatically rotates.

The toilet lid 50 has a toilet lid main body part 51, a toilet lid hinge part 55, a foot part 56, and a contact part 57. The toilet lid main body part 51 and the toilet lid hinge part 55 are integrally provided with a hard resin material.

When the toilet lid 50 is closed, the toilet lid body 51 covers the upper surface 32 and the entire opening of the seating section 31, and also covers the outer surface 34. The toilet lid main body part 51 has a flat upper plate part 52 that is one size larger than the upper surface 32, and a hanging piece part 53 extending downward from the edge of the upper plate part 52.

The toilet lid hinge portion 55 rotatably supports the toilet lid 50 with respect to the device main body 21. The toilet lid hinge portion 55 is assembled to the toilet lid shaft portion 23. A pair of toilet lid hinge parts 55 are provided at both ends of the toilet lid main body part 51 in the left-right direction. The toilet lid hinge portion 55 has a shape that protrudes rearward from the rear end portion of the toilet lid main body portion 51. The toilet lid hinge portion 55 covers the top and outer surfaces of the toilet seat hinge portion 36.

As shown in FIG. 2, the foot portion 56 supports the toilet lid main body portion 51 when the toilet lid 50 is closed. The tip of the leg portion 56 is made of an elastic resin material such as synthetic rubber. The contact portion 57 is a portion that contacts the seating surface 60 when both the toilet lid 50 and the toilet seat 30 are open.

The toilet seat device 20 includes a cushion member 40 that is detachably attached to the toilet seat 30, as shown in FIGS. 4 and 5. The cushion member 40 is provided separately from the seating section 31 and the toilet seat hinge section 36. The cushion member 40 is an example of a cushion portion that constitutes the seating surface 60 when attached to the toilet seat 30 shown in FIG. The seating surface 60 is, for example, a surface that is exposed upward and comes into contact with the seated person when the toilet lid 50 is open and the toilet seat 30 is closed (see FIG. 1).

The cushion member 40 as a whole has an annular shape with an open center like the seating portion 31. The cushion member 40 is made of a softer material than the seat portion 31 and the toilet seat hinge portion 36, and the larger the thickness, the better the cushioning properties. The thickness of the cushion member 40 is measured when the cushion member 40 is attached to the toilet seat 30, with the thickness direction being perpendicular to the surface that contacts the seating portion 31. As shown in FIGS. 6 to 8, the front half of the cushion member 40 includes a thin portion 41 formed thin. The thin portion 41 has a sheet shape. The thickness of the thin portion 41 is preferably 2 mm or more and 7 mm or less. The rear half of the cushion member 40 includes a thick portion 42 formed thick. The thickness of the thick portion 42 is preferably 10 mm or more and 30 mm or less. The thickness of the thick portion 42 is preferably 1.5 times or more and 15 times or less, and more preferably 2 times or more and 5 times or less than the thickness of the thin portion 41. The thickness of the thick portion 42 is preferably 10 mm or more and 30 mm or less. The thickness of the side parts 45 and 46, which will be described later, is preferably 2 mm or more and 7 mm or less.

As shown in FIGS. 5 to 8, the cushion member 40 has a thin portion 41 in the front end region RF. Specifically, the entire front end region RF is constituted by the thin portion 41. The front end region RF is, for example, a region that is 1/3 of the length from the front end to the rear end of the cushion member 40 from the front end to the rear end. As shown in FIG. 5, in this embodiment, the positions of the front end and rear end of the cushion member 40 are approximately the same as the positions of the front end 31A and rear end 31B of the seating portion 31.

The thickness of the predetermined portions R1, R2, and R3 forming the seating surface 60 of the cushion member 40 is greater than the thickness of the thin portion 41 of the cushion member 40. The predetermined portions R1, R2, and R3 are included in the rear half region of the seating surface 60. The predetermined portions R1 and R2 are at least part of the regions located on the left and right rear sides of the seating surface 60. Specifically, when the cushion member 40 is attached to the toilet seat 30, the predetermined portions R1 and R2 are provided on the left and right sides of the opening of the seating portion 31. In the length from the front end 31A to the rear end 31B of the seating part 31, the opening of the seating part 31 is included in the range of, for example, 1/10 to 9/10 from the rear end 31B, and in FIG. 5, the opening is 1/8. It is formed over a range of 7/8 from 7/8. In the length from the front end 31A to the rear end 31B of the seating portion 31, the predetermined portions R1 and R2 are included in a range from, for example, 1/10 to 3/5 of the position from the rear end 31B, and in FIG. It is formed over the range of 5 to 2/5. The predetermined portions R1 and R2 are provided on the inner peripheral side of the seating portion 31 in the width direction of the seating portion 31 (see FIG. 9). The predetermined regions R1 and R2 are ischial support regions that support the ischial bones of a seated person. The predetermined region R3 is at least a part of a region located at the center of the seating surface 60 in the left and right directions. Specifically, when the cushion member 40 is attached to the toilet seat 30, the predetermined portion R3 is provided on the rear side with respect to the opening of the seating portion 31. The predetermined portion R3 is provided at a position facing the opening of the seating portion 31 (see FIG. 6). The predetermined region R3 is a coccyx support region that supports the coccyx of the seated person.

As shown in FIG. 5, the center of gravity C1 of the cushion member 40 is located in the rear half of the length from the front end 31A to the rear end 31B of the seating portion 31. Specifically, the center of gravity C1 of the cushion member 40 is included in a range of up to 1/3 forward from the rear end of the length from the front end to the rear end of the cushion member 40. The center of gravity C1 of the cushion member 40 is located closer to the toilet seat shaft portion 22 than the front end 31A of the seating portion 31 in the front-rear direction when the cushion member 40 is attached to the toilet seat 30 (FIGS. 2 and 3). reference).

As shown in FIG. 7, the thickness of the cushion member 40 gradually increases from the thin portion 41 toward the rear. The thickness of the front portions of the predetermined portions R1, R2 and the region adjacent to the front side of the predetermined portions R1, R2 gradually increases, and the upper surface has a gentle slope shape. The rear portions of the predetermined portions R1, R2 and the regions adjacent to the rear side of the predetermined portions R1, R2 have the maximum thickness in the cushion member 40. The rear end of the cushion member 40 has a shape that tapers toward the end.

As shown in FIG. 9, the cushion member 40 has a U-shaped cross section in the width direction. The cushion member 40 has an upper surface portion 44 that constitutes a seating surface 60, and side portions 45 and 46 extending downward from both ends of the upper surface portion 44 in the width direction. In the rear half of the cushion member 40, the thick portion 42 is provided on the upper surface portion 44. In the rear half of the cushion member 40, the thickness of the side parts 45, 46 as a whole is smaller than the thickness of the top part 44. The side parts 45 and 46 become thinner toward the tip side. The heights of the side surfaces 45 and 46 are smaller than the heights of the side surfaces 33 and 34 of the seating section 31. With such a configuration, the cushion member 40 can be easily attached to the toilet seat 30, and the cushion member 40 can be made smaller.

The cushion member 40 is attached to the toilet seat 30 with an adhesive sheet 47, as shown in FIG. The adhesive sheet 47 is provided integrally with the cushion member 40 over the entire back surface of the cushion member 40. The adhesive sheet 47 has an adhesive surface that can be repeatedly applied and peeled off from the toilet seat 30. The adhesive sheet 47 has an adhesive force that maintains the attached state of the cushion member 40 when the cushion member 40 is attached to the toilet seat 30 and the toilet seat 30 is opened. Note that in FIGS. 6 to 9, the cushion member 40 is depicted without the adhesive sheet 47.

The cushion member 40 is made of a material that elastically deforms when a user sits on it. The cushion member 40 is made of, for example, a low resilience foam such as urethane foam. The cushion member 40 has a gas venting portion 48 for venting gas during molding. Specifically, the cushion member 40 is foam-molded using a mold having gas vent holes, and an unfoamed or slightly foamed skin layer 49A is formed on the surface of the foam layer 49B. The surface of the skin layer 49A has water repellency and antibacterial properties. The gas venting portion 48 is a portion where the skin layer 49A is not formed due to the gas venting hole, and the foam layer 49B is exposed on the surface. The surface of the gas venting portion 48 is rougher than the surface of the skin layer 49A, and has an uneven shape. A plurality of gas venting portions 48 are provided scattered on the back surface of the cushion member 40. The gas vent portion 48 is covered with an adhesive sheet 47. Specifically, the plurality of gas venting portions 48 and the skin layer 49A located on the back side of the cushion member 40 are collectively covered with the adhesive sheet 47.

The configuration of each part when the cushion member 40 is attached to the toilet seat 30 will be explained. In the following description, unless otherwise specified, a state in which the cushion member 40 is attached to the toilet seat 30 will be described.

The cushion member 40 covers the entire upper surface 32 of the seating portion 31, as shown in FIG. On the other hand, the cushion member 40 does not cover the upper surface of the toilet seat hinge part 36, and a space is secured between the toilet seat hinge part 36 and the toilet lid hinge part 55 regardless of the presence or absence of the cushion member 40. (See Figure 2). The cushion member 40 covers the upper portions of the side surfaces 33 and 34 of the toilet seat 30, as shown in FIG. Specifically, the side surface portion 45 of the cushion member 40 covers the upper portion of the inner surface 33, and the side portion 46 covers the upper portion of the outer surface 34. The cushion member 40 is arranged inside the maximum external shape of the toilet seat 30. In other words, the outer circumferential end of the cushion member 40 having the maximum external shape is located inside the outer circumferential end of the toilet seat 30. In this embodiment, the outer circumferential end portion of the cushion member 40 that has the maximum external shape is the tip portion of the side surface portion 46 . According to this configuration, the cushion member 40 and the toilet lid 50 are unlikely to interfere with each other, and even when the cushion member 40 is attached to the toilet seat 30, the toilet lid 50 can be sufficiently closed. According to the above configuration, dirt splashed from the toilet main body 11 can be received by the seating portion 31, and dirt can be prevented from adhering to the cushion member 40.

The capacitive seating sensor 38 shown in FIG. 1 detects that the user has touched the thin wall portion 41 . In other words, the thickness of the thin portion 41 is set so as to suppress the influence of the presence or absence of the cushion member 40 on detection by the capacitive seating sensor 38. The thickness of the thin part 41 is set so that heat from the heat generating member 39 can be transmitted to the seated person via the thin part 41.

As shown in FIGS. 2 and 3, the toilet seat device 20 is capable of automatically opening and closing the toilet seat 30 with the cushion member 40 attached to the toilet seat 30 by a toilet seat opening/closing device built into the device body 21. . For example, the cushion member 40 is configured such that the torque acting on the toilet seat shaft portion 22 allows the toilet seat opening/closing device to open and close the cushion member 40 . From the viewpoint of reducing the torque acting on the toilet seat shaft portion 22, the mass of the cushion member 40 is preferably 400 g or less. The cushion member 40 is configured so that the upright posture of the toilet seat 30 does not tilt forward due to the cushion member 40 coming into contact with the toilet lid 50 when the toilet seat 30 is open. In other words, when the cushion member 40 is attached and the toilet seat 30 is opened, the toilet seat 30 is held in an upright position that is vertical or tilted backwards.

The toilet seat device 20 is capable of automatically opening and closing the toilet lid 50 with the cushion member 40 attached to the toilet seat 30 by a toilet lid opening/closing device built into the device main body 21. For example, the cushion member 40 is configured such that the cushion member 40 and the toilet lid 50 do not come into contact with each other except that the thin wall portion 41 contacts the foot portion 56 when the toilet lid 50 is closed. For example, in the present embodiment, the thickness of the cushion member 40 is equal to the gap between the toilet seat 30 and the toilet lid 50 when the cushion member 40 is not attached, except for the portion 41A of the cushion member 40 that is in contact with the foot portion 56. is set smaller than.

As shown in FIG. 9, in the toilet seat device 20, when the cushion member 40 is attached to the toilet seat 30 and the toilet lid 50 is closed, the side surface 46A of the cushion member 40 is hidden by the toilet lid 50. Specifically, when the toilet lid 50 is closed, the side surface portion 46 of the cushion member 40 is covered from the outer circumferential side by the hanging piece portion 53 of the toilet lid 50.

With reference to FIGS. 11A, 11B, and 11C, the state in which the toilet lid 50 is closed is compared with the case where the cushion member 40 is removed from the toilet seat 30 and the case where the cushion member 40 is attached to the toilet seat 30. explain. The foot portion 56 contacts the toilet seat 30 when the cushion member 40 is removed from the toilet seat 30 and the toilet lid 50 is closed, and the foot portion 56 contacts the cushion member 40 when the cushion member 40 is attached to the toilet seat 30 and the toilet lid 50 is closed. come into contact with. As shown in FIG. 11A, the position of the front end of the toilet lid 50 in a state where the cushion member 40 is removed from the toilet seat 30 and the toilet lid 50 is closed is defined as P1. As shown in FIG. 11C, the position of the front end of the toilet lid 50 in a state where the cushion member 40 is attached to the toilet seat 30 and the toilet lid 50 is closed is defined as P2. P2 is displaced above P1 by the amount of the cushion member 40. The amount of displacement between P1 and P2 is smaller than the thickness of the portion 41A of the cushion member 40 that the foot portion 56 contacts. That is, in the state where the toilet lid 50 is closed, the portion 41A of the cushion member 40 that is in contact with the foot portion 56 is elastically deformed, so that the cushion member 40 has a thickness smaller than that in the natural state shown in FIG. 11B. In this embodiment, the cushion member 40 is more elastically deformable than the foot portion 56. According to this configuration, the amount of displacement between P1 and P2 can be suppressed to be smaller than a configuration in which the cushion member has higher rigidity than the foot.

The operation and effects of this embodiment will be explained. The toilet seat 30 of this embodiment includes a cushion member (cushion portion) 40 that constitutes at least a portion of the seating surface 60. The thickness of predetermined portions R1, R2, and R3 forming the seating surface 60 of the cushion member 40 is greater than the thickness of the front end region RF of the cushion member 40.

As a result of studies conducted by the inventors of the present application, it has been found that in order to improve the comfort of sitting on the toilet seat 30, it is effective to provide cushioning properties to predetermined areas that support the ischial bones, coccyx, and the like. On the other hand, it has been found that the cushioning properties in the front end region RF of the seating surface 60 have a smaller effect on improving sitting comfort than in the predetermined regions R1, R2, and R3. The toilet seat 30 of this embodiment was developed based on these findings, and the thickness of the predetermined portions R1, R2, and R3 is larger than the thickness of the thin portion 41 in the front end region RF. Therefore, the cushion member 40 makes the toilet seat 30 more comfortable to sit on. For example, the toilet seat 30 of this embodiment impedes the opening/closing function of the toilet seat 30, the heating toilet seat function, the sensor function for detecting seating, etc., compared to the case where the front end region RF has the same thickness as the predetermined parts R1, R2, and R3. Hateful. As a result, it is possible to provide a comfortable toilet seat 30 while ensuring the functionality of the toilet seat 30.

This embodiment includes a seating portion (toilet seat main body portion) 31 whose upper surface 32 is covered by a cushion member 40 . The center of gravity of the cushion member 40 is located in the rear half of the length from the front end 31A to the rear end 31B of the seating section 31. According to this configuration, since the cushion member 40 is attached to the toilet seat 30, the torque acting on the toilet seat shaft portion 22 can be reduced, and the load when opening and closing the toilet seat 30 can be reduced. According to the cushion member 40 in which the center of gravity C1 is located in the rear half of the length from the front end 31A to the rear end 31B of the seating portion 31, the weight of the front end region RF is reduced, so that the toilet seat 30 can be opened and closed manually. It is difficult to feel the weight when doing so.

In the present embodiment, the predetermined portions R1 and R2 are at least part of the regions located on the left and right rear sides of the seating surface 60. According to this configuration, the sit bones of the seated person can be supported by the predetermined portions R1 and R2, making the toilet seat 30 more comfortable to sit on.

In this embodiment, the thickness of the cushion member 40 gradually increases from the thin portion 41 toward the rear. According to this configuration, the seated person is less likely to notice changes in the thickness of each part of the cushion member 40, and can sit on the seating surface 60 without feeling uncomfortable.

In this embodiment, a toilet lid 50 is provided above the seating surface 60 so as to be openable and closable. The toilet lid 50 has a toilet lid main body part 51 and a leg part 56 that supports the toilet lid main body part 51 in the closed state. The thin wall portion 41 of the cushion member 40 is in contact with the foot portion 56 when the toilet lid 50 is closed. According to this configuration, compared to a configuration in which the thick portion 42 of the cushion member 40 contacts the foot portion 56, the amount of displacement of the position of the toilet lid 50 depending on the presence or absence of the cushion member 40 can be reduced. As a result, even when the cushion member 40 is attached to the toilet seat 30, the toilet lid 50 can be fully closed.

In this embodiment, the toilet seat 30 includes a capacitive seating sensor 38 that detects when the user has touched the thin wall portion 41 . According to this configuration, even when the cushion member 40 is attached to the toilet seat 30, it is possible to determine whether or not the person is seated using the capacitive seating sensor 38.

The toilet seat 30 of this embodiment includes a seating portion 31 whose entire upper surface 32 is covered with a cushion member 40. According to this configuration, the comfort of sitting on the toilet seat 30 can be improved compared to a configuration in which only a portion of the upper surface 32 of the seating portion 31 is covered by the cushion member 40. For example, in a post-installed toilet seat sheet that is divided into left and right parts to accommodate various toilet seat shapes, the portion of the upper surface 32 of the seating portion 31 that supports the coccyx is not covered by the cushion member 40. On the other hand, in the present embodiment, the cushion member 40 covers the entire upper surface 32 of the seating portion 31, so that the coccyx can be supported by the predetermined portion R3, thereby improving sitting comfort. According to the above configuration, when the cushion member 40 is attached to the toilet seat 30, there is a sense of unity between the cushion member 40 and the toilet seat 30, and the design can be improved.

In this embodiment, since the side parts 45 and 46 of the cushion member 40 contact the inner surface 33 and outer surface 34 of the toilet seat 30, the cushion member 40 is difficult to shift in the width direction of the toilet seat 30, and the cushion member 40 is positioned. Cheap. In this embodiment, since the cross-sectional shape of the cushion member 40 is U-shaped, the shape of the seating surface 60 can be stabilized compared to a flat cushion sheet.

<Embodiment 2>
The toilet seat 30 of the second embodiment differs from the first embodiment in the range in which the seating portion 31 is covered by the cushion member 140. Components similar to those in Embodiment 1 are designated by the same reference numerals and redundant explanations will be omitted.

As shown in FIG. 12, the cushion member 140 has a U-shaped cross section in the width direction. The cushion member 140 has an upper surface portion 44 that constitutes the seating surface 60, and side portions 145 and 146 extending downward from both ends of the upper surface portion 44 in the width direction. The side portions 145, 146 become thinner toward the distal end. The heights of the side surfaces 145 and 146 are approximately equal to the heights of the side surfaces 33 and 34 of the seating section 31.

The cushion member 140 covers the entire sides 33 and 34 of the toilet seat 30. Specifically, the side surface portion 145 of the cushion member 140 covers the entire inner surface 33, and the side surface portion 146 covers the entire outer surface 34. The cushion member 140 does not cover the cut surfaces on both sides in the width direction located below the side surfaces 33 and 34 of the toilet seat 30.

In the toilet seat device 20, when the cushion member 140 is attached to the toilet seat 30 and the toilet lid 50 is closed, a side surface 146A of the cushion member 140 is hidden by the toilet lid 50. Specifically, when the toilet lid 50 is closed, the side surface portion 146 of the cushion member 140 is covered from the outer peripheral side by the hanging piece portion 53 of the toilet lid 50.

In this embodiment, since the cushion member 140 covers the entire upper surface 32 and side surfaces 33 and 34 of the seating portion 31, there is a sense of unity between the cushion member 140 and the toilet seat 30, and the design of the toilet seat 30 can be improved.

In this embodiment, the gap between the cushion member 140 and the toilet seat 30 is located on the back side of the toilet seat 30, compared to a configuration in which the cushion member 140 covers only the upper portions of the side surfaces 33 and 34 of the toilet seat 30. Therefore, it is difficult for dirt to enter the gap between the cushion member 140 and the toilet seat 30 from above, and cleaning performance is good.

In this embodiment, since the side parts 145 and 146 of the cushion member 140 contact the inner surface 33 and outer surface 34 of the toilet seat 30, the cushion member 140 is difficult to shift in the width direction of the toilet seat 30, and the cushion member 140 is positioned. Cheap. In this embodiment, since the cross-sectional shape of the cushion member 140 is U-shaped, the shape of the seating surface 60 can be stabilized compared to a flat cushion sheet.

<Embodiment 3>
The toilet seat 200 of the third embodiment is different from the first embodiment in that a cushion portion 240 is provided integrally with the toilet seat main body portion 230 and cannot be removed from the toilet seat main body portion 230, as shown in FIG. The cushion portion 240 has a configuration corresponding to the cushion member 40 of the first embodiment, and the toilet seat main body portion 230 has a configuration equivalent to the seating portion 31 of the first embodiment. Components similar to those in Embodiment 1 are designated by the same reference numerals and redundant explanations will be omitted.

The cushion portion 240 is integrally formed with the toilet seat body portion 230 by two-color molding, insert molding, or the like. The surface of the cushion portion 240 is flush with and continuous with the surface of the toilet seat body portion 230. In this embodiment, since no gap or step is formed between the cushion portion 240 and the toilet seat body portion 230, dirt is difficult to enter between the cushion portion 240 and the toilet seat body portion 230.

<Embodiment 4>
The toilet seat 30 of Embodiment 4 is different from Embodiment 1 in that the cushion part 340 cannot be removed from the seating part (toilet seat body part) 31, as shown in FIG. The cushion portion 340 has a configuration corresponding to the cushion member 40 of the first embodiment. Components similar to those in Embodiment 1 are designated by the same reference numerals and redundant explanations will be omitted.

The cushion portion 340 is fixed to the toilet seat 30 by an adhesive layer 347. The adhesive layer 347 is provided on the entire back surface of the cushion portion 340. The adhesive layer 347 is a layer in which an adhesive having excellent compatibility with the cushion portion 340 and the seat portion (toilet seat main body portion) 31 is solidified. In this embodiment, the cushion portion 340 is difficult to shift from the toilet seat 30.

<Other embodiments>
The present disclosure is not limited to the embodiments described above and illustrated in the drawings, and, for example, the following embodiments are also included within the technical scope of the present disclosure.
(1) The predetermined portion may be any one of the predetermined portions R1, R2, and R3. The predetermined portion may be a portion different from the predetermined portions R1, R2, and R3. However, a region other than the front end region is preferable.
(2) Only a portion of the front end region may be constituted by a thin portion. The range of the front end region can be set as appropriate depending on the shape of the cushion member, the positional relationship with other members, and the like. The front end region is not limited to the region of the front ⅓ of the length from the front end to the rear end of the cushion member. For example, the front end region may be the front 1/4 region or the front 1/5 region in the length from the front end to the rear end of the cushion member.
(3) The position of the center of gravity of the cushion portion is not limited to the above position.
(4) The shape, material, and range of the cushion portion that covers the seating portion can be changed as appropriate. For example, in a configuration in which a photoelectric human body detection sensor is disposed at a seating portion or a position close to the seating portion, a portion of the upper surface of the seating portion that overlaps with the path of infrared rays or the like may not be covered. The cushion portion may cover only one of the inner and outer surfaces of the toilet seat.
(5) In the above embodiment, the cushion portion constitutes the entire seating surface. The cushion portion may constitute only a part of the seating surface. For example, the seating surface may include a cushion portion and a portion of the upper surface of the seating portion.
(6) The configuration of the toilet seat can be changed as appropriate. For example, the toilet seat may be opened and closed manually rather than automatically. The toilet seat does not need to be equipped with a capacitive seating sensor. The toilet seat does not have to be a heated toilet seat. The shape of the seating portion is not limited to the above-described shape, and may not have a cut surface, for example. The portion that constitutes the maximum external shape in the seating portion may not be the lower end of the outer surface, but may be, for example, the outer end of the lower surface. The seating portion may be formed not in a hollow shape but in a plate shape.
(7) The configuration of the toilet lid can be changed as appropriate. For example, the toilet lid may be opened and closed manually instead of automatically.

30,200... Toilet seat, 31... Seating part (toilet seat body part), 31A... Front end, 31B... Rear end, 32... Upper surface, 38... Capacitive seating sensor, 40,140... Cushion member (cushion part), 41 ...Thin wall part, 50... Toilet lid, 51... Toilet lid body part, 56... Foot part, 60... Seating surface, 240, 340... Cushion part, C1... Center of gravity, R1, R2, R3... Predetermined region, RF... Front end region

Claims (10)

A toilet seat comprising a cushion portion forming at least a part of a seating surface,
The cushion portion has a thin portion over the entire front end region,
The thickness of a predetermined portion of the cushion portion constituting the seating surface is greater than the thickness of the thin portion,
A toilet lid is provided above the seating surface so as to be openable and closable;
The toilet lid has a toilet lid main body and a foot that supports the toilet lid main body in a closed state,
A toilet seat in which the foot portion is in contact with the thin wall portion when the toilet lid is closed . A toilet seat main body portion having at least a portion of its upper surface covered by the cushion portion,
The toilet seat according to claim 1, wherein the cushion portion is provided separately from the toilet seat main body portion. The toilet seat according to any one of claims 1 and 2, wherein the toilet seat can be opened and closed with the cushion portion provided. The toilet seat according to any one of claims 1 to 3, wherein when the cushion part is provided on the toilet seat and the toilet lid is closed, a side surface of the cushion part is hidden by the toilet lid. The toilet seat according to any one of claims 1 to 4, comprising a heat generating member. A toilet seat main body portion having at least a portion of its upper surface covered by the cushion portion,
The toilet seat according to claim 1, wherein the center of gravity of the cushion portion is located in the rear half of the length from the front end to the rear end of the toilet seat main body. The toilet seat according to any one of claims 1 to 6, wherein the predetermined portion is at least a part of a region located on the left and right rear sides of the seating surface. The toilet seat according to any one of claims 1 to 7, wherein the cushion portion has a thickness that gradually increases from the thin portion toward the rear. The toilet seat according to any one of claims 1 to 8, further comprising a capacitive seating sensor that detects that a user has touched the thin wall portion. The toilet seat according to claim 1 , further comprising a toilet seat body portion whose entire upper surface is covered by the cushion portion.

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