Toilet seat device and toilet bowl device

Abstract

To provide a toilet seat device and a toilet bowl device capable of accurately positioning and placing a top cover with respect to a casing.SOLUTION: The toilet seat device includes a casing 4, a toilet seat, and a top cover 6. The toilet seat is attached to the casing 4. The top cover 6 covers the top face of the casing 4. The casing 4 has a vertical surface 501 extending downward from the edge of the upper surface of the casing 4. The top cover 6 has a cover portion 60, a hanging piece 61, and a rib 64. The cover portion 60 covers the top face of the casing 4. The hanging piece 61 protrudes downward from the cover portion 60 along the vertical surface 501. The rib 64 protrudes from the hanging piece 61 toward the vertical surface 501 and extends in the vertical direction.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present disclosure relates to a toilet seat system and a toilet bowl system. [Background technology]

[0002] Patent Document 1 discloses a toilet seat device. This toilet seat device includes a functional unit, a main body cover, and a top cover. The functional unit performs functions such as toilet bowl cleaning, private parts cleaning, and deodorization. The main body cover covers the functional unit from above. An opening is formed on the top surface of the main body cover to expose the detergent tank inside the main body cover. The top cover is removably attached to the main body cover and covers the opening of the main body cover. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-170866 Summary of the Invention [Problem to be solved by the invention]

[0004] In the toilet seat device described above, it is not easy to accurately position and dispose the top cover relative to the main body cover, and there is a possibility that the top cover may become loose.

[0005] The present disclosure has been made in view of the above-mentioned circumstances, and has an object to provide a toilet seat apparatus and a toilet bowl apparatus in which a top cover can be positioned and arranged with high precision relative to a casing. [Means for solving the problem]

[0006] A toilet seat apparatus according to one aspect of the present disclosure includes a casing, a toilet seat attached to the casing, and a top cover that covers the upper surface of the casing. The casing has a vertical surface that extends downward from an edge of the top surface. The top cover has a cover portion that covers the upper surface, a hanging piece that extends downward from the cover portion and along the vertical surface, and a rib that extends vertically from the hanging piece toward the vertical surface.

[0007] A toilet apparatus according to one aspect of the present disclosure includes the toilet seat apparatus and a toilet bowl. The toilet seat apparatus is installed in the toilet bowl. [Effects of the Invention]

[0008] In the toilet seat apparatus and toilet bowl apparatus according to the above aspect, the top cover can be positioned and disposed with high precision relative to the casing. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a side view of a toilet apparatus according to one embodiment of the present disclosure. [Figure 2] FIG. 2 is a perspective view of the toilet device, in which illustration of the side cover, rear cover, etc. is omitted. [Figure 3] FIG. 3 is a perspective view of the rear part of the toilet device, with the top cover and toilet lid omitted. [Figure 4] FIG. 4 is an exploded perspective view of a cover and a top cover of the toilet apparatus. [Figure 5] FIG. 5 is a cross-sectional view showing a state in which a top cover is attached to the cover of the same. [Figure 6] FIG. 6 is an enlarged view of a portion A1 in FIG. [Figure 7] FIG. 7 is a perspective view of the top cover. [Figure 8] FIG. 8 is an enlarged view of a portion A2 in FIG. [Figure 9] FIG. 9 is a cross-sectional view showing a state in which the protrusion of the top cover is fitted into the recess of the cover. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present disclosure relates to a toilet seat device and a toilet bowl device, and more particularly to a toilet seat device provided with a top cover that covers the upper surface of a casing, and a toilet bowl device provided with this toilet seat device.

[0011] (1) Implementation form The toilet device 1 of this embodiment is installed, for example, on a floor 91 of a toilet room along a wall 90, and is used as a Western-style toilet, as shown in Figure 1. Note that in this disclosure, the toilet device 1 will be described using the direction seen by a user seated on the toilet device 1.

[0012] The toilet apparatus 1 comprises a toilet apparatus main body 2 and a toilet seat apparatus 3. The toilet seat apparatus 3 is installed in the toilet apparatus main body 2 and constitutes a part of the toilet apparatus 1.

[0013] The toilet device main body 2 has a frame 20 (see Figure 2) and a toilet 21. The frame 20 shown in Figure 2 is made of metal and forms the framework of the toilet device main body 2. The toilet 21 is attached to the frame 20 while it is housed within the frame 20. The toilet device 1 is installed, for example, with the frame 20 fixed to the floor 91 with fasteners such as screws. The frame 20 reinforces the toilet 21.

[0014] As shown in Figure 1, the toilet 21 has a toilet body 22, a pair of left and right side covers 23, and a rear cover 24. The toilet body 22, the pair of left and right side covers 23, and the rear cover 24 are each made of synthetic resin.

[0015] As shown in FIG. 2, the toilet body 22 has a bowl 220, a rim 221, and a skirt 222. The bowl 220 is the part that receives waste and is open upward. The rim 221 is formed in a ring shape when viewed from above. The inner peripheral edge of the rim 221 is connected to the upper edge of the bowl 220. The upper surface of the rim 221 forms the upper surface of the toilet bowl 21. The skirt 222 is formed in a U-shape that opens to the rear when viewed from above. The upper edge of the skirt 222 is connected to the outer peripheral edge of the rim 221. The skirt 222 protrudes downward from the outer peripheral edge of the rim 221. The skirt 222 covers the bowl 220 from the front and both the left and right sides.

[0016] Each of the pair of left and right side covers 23 and rear cover 24 shown in Figure 1 is attached to the rear of the frame 20. The rear of the frame 20 is located between the pair of left and right side covers 23. The pair of left and right side covers 23 cover the rear of the frame 20 from both the left and right sides. The rear cover 24 is located behind the frame 20 and covers the frame 20 from the rear side.

[0017] The material of the toilet body 22 is not limited to synthetic resin, and it may be made of ceramic, for example. There are also no limitations on the shape of the toilet body 22. The toilet device body 2 does not have to have a frame 20.

[0018] The toilet seat device 3 is installed on a toilet bowl 21. The toilet seat device 3 has a casing 4, a toilet seat 30, a toilet lid 31, a functional part 32, and a top cover 6. In this disclosure, unless otherwise specified, a state in which the top cover 6 is attached to the casing 4 will be described.

[0019] The casing 4 is located at the rear end and upper end of the toilet apparatus 1. The toilet seat 30 and toilet lid 31 are rotatably attached to the casing 4. The toilet seat 30 and toilet lid 31 each rotate around a rotation axis parallel to the left-right direction. The toilet seat 30 rests on the upper surface of the rim 221 of the toilet bowl 21. The toilet lid 31 covers the toilet seat 30 resting on the rim 221.

[0020] The casing 4 has a base 40 and a cover 5. The base 40 is formed, for example, in the shape of a box that is open upward. The base 40 is made of synthetic resin. The base 40 is attached to the rear of the frame 20 (see FIG. 2). The base 40 is made of synthetic resin. The shape of the base 40 is not limited. Furthermore, the material of the base 40 is not limited to synthetic resin.

[0021] A functional unit 32 that adds functions to the toilet seat device 3 is installed on the base 40. The functional unit 32 has a plurality of mechanisms, such as a bowl cleaning mechanism, a private parts cleaning mechanism, a drying mechanism, and a deodorizing mechanism.

[0022] The bowl cleaning mechanism cleans bowl 220. The bowl cleaning mechanism has, for example, a water discharger that discharges water into bowl 220, detergent tank 320 (see FIG. 3), and a detergent mixer that mixes detergent stored in detergent tank 320 with water discharged into bowl 220 by the water discharger. The private parts cleaning mechanism discharges water toward the private parts of the user to clean the private parts. The drying mechanism blows warm air toward the private parts of the user to dry them. The deodorizing mechanism sucks in air within bowl 220 and removes odors contained in this air. Note that functional unit 32 is not limited and may have only some of the multiple mechanisms described above, or may have mechanisms other than the mechanisms described above.

[0023] The casing 4 further has a cover 5 shown in Figs. 3 to 5. The cover 5 forms the upper part of the casing 4. The cover 5 is formed in the shape of a container that is open downward. The cover 5 is made of synthetic resin. The cover 5 is attached to a base 40 (see Fig. 1). However, the cover 5 is not limited to being made of synthetic resin.

[0024] The cover 5 is located above the base 40, the pair of left and right side covers 23, and the rear cover 24 (see FIG. 1), and is located behind the rim 221. The cover 5 covers the base 40 and most of the functional unit 32 installed on the base 40. The cover 5 is detachable from the base 40. Therefore, by removing the cover 5 from the base 40, maintenance of the functional unit 32 can be performed.

[0025] 4, the cover 5 has an upper plate portion 50, a front plate portion 51, a pair of left and right side plate portions 52, and a rear plate portion 53. The upper surface of the upper plate portion 50, the front surface of the front plate portion 51, the outer surfaces of the pair of left and right side plate portions 52, and the rear surface of the rear plate portion 53 respectively constitute the upper surface, front surface, left and right side surfaces, and rear surface of the cover 5.

[0026] The upper surface of the upper plate portion 50 forms the upper surface of the casing 4. The upper plate portion 50 is formed in a roughly T-shape when viewed from above, with the left-right width of the rear end portion being greater than the left-right width of the front portion. The portion of the upper plate portion 50 rearward of the front end portion is formed in a roughly horizontal plate shape. The front end portion of the upper plate portion 50 and the upper surface of this front end portion are inclined or curved so that the portion located further forward is positioned downward.

[0027] The front plate 51 protrudes downward from the front edge of the upper plate 50. The front plate 51 is formed over the entire length of the front edge of the upper plate 50. The front plate 51 protrudes downward from the upper plate 50 less than the pair of left and right side plate portions 52 and the rear plate portion 53. The lower edge of the front plate 51 is located higher than the lower edges of the side plate portions 52 and the rear plate portion 53.

[0028] The pair of left and right side plate portions 52 respectively protrude downward from the left and right side edges of the upper plate portion 50. Each side plate portion 52 is formed along the entire length of the side edge of the upper plate portion 50. The upper end of the front edge of each side plate portion 52 is connected to the side edge of the upper plate portion 50. A toilet seat mounting portion 520 and a toilet lid mounting portion 521 are formed on each side plate portion 52. The end of the toilet seat 30 (see Figure 1) is rotatably attached to the toilet seat mounting portions 520 of the pair of left and right side plate portions 52. The end of the toilet lid 31 (see Figure 1) is rotatably attached to the toilet lid mounting portions 521 of the pair of left and right side plate portions 52.

[0029] The rear plate portion 53 protrudes downward from the rear edge of the upper plate portion 50. The rear plate portion 53 is formed over the entire length of the rear edge of the upper plate portion 50. Both left and right side edges of the rear plate portion 53 are connected to the rear edges of the pair of left and right side plate portions 52. The lower edge of the rear plate portion 53 is located at the same height as the lower edges of the side plate portions 52.

[0030] The functional unit 32 further has an operation unit 321 and a display unit 323 shown in FIG. 3. The operation unit 321 and the display unit 323 are provided in the casing 4. The operation unit 321 is used, for example, to set the operation of the functional unit 32 of the toilet seat device 3. The operation unit 321 has a plurality of operation buttons 322 provided on the upper surface of the upper plate portion 50. The display unit 323 has a plurality of light sources 324 provided on the upper surface of the upper plate portion 50. Each light source 324 is, for example, a light-emitting diode. The display unit 323 displays information such as the operating state of the toilet seat device 3, for example, by changing the light emission state of the plurality of light sources 324. It should be noted that the toilet seat device 3 does not necessarily have to have the operation unit 321 and the display unit 323.

[0031] The casing 4 has a plurality of storage sections 41. Each storage section 41 stores components of the toilet apparatus 1 in an exposed state. The casing 4 of this embodiment has a battery storage section 410 and a tank storage section 411 as the plurality of storage sections 41. The battery storage section 410 stores a removably battery 33. The battery 33 is used as a power source for the toilet seat apparatus 3. The battery storage section 410 is a recess formed on the top surface of the upper plate section 50. The battery storage section 410 is formed in the middle in the left-right direction at the rear end of the upper plate section 50.

[0032] The tank housing portion 411 houses the detergent tank 320 of the toilet seat device 3. The detergent tank 320 houses liquid detergent. The detergent in the detergent tank 320 is used when the bowl cleaning mechanism cleans the bowl 220. The tank housing portion 411 has an opening 412 which is a hole that penetrates the upper plate portion 50 from top to bottom. The opening 412 is located in front of the battery housing portion 410. The detergent tank 320 is inserted into and removed from the tank housing portion 411 through the opening 412.

[0033] There are no limitations on the shape, size, and position of each of the battery accommodating section 410 and the tank accommodating section 411. The casing 4 may have an accommodating section other than the battery accommodating section 410 and the tank accommodating section 411. The casing 4 may not have the accommodating section 41.

[0034] The casing 4 further has a plurality of recesses 42. The plurality of recesses 42 are formed on the upper surface of the upper plate portion 50. The casing 4 has a pair of left and right recesses 42 as the plurality of recesses 42. The pair of left and right recesses 42 are formed on both left and right ends of the rear end portion of the upper plate portion 50. When the top cover 6 is attached to the casing 4, a plurality of protrusions 62 (see FIG. 7) formed on the lower surface of the top cover 6 are fitted into the plurality of recesses 42, respectively.

[0035] 9, each recess 42 has a fitting portion 420 into which the corresponding protrusion 62 fits, and a guide surface 421 whose lower end is connected to the upper end of the fitting portion 420. The fitting portion 420 is a circular recess that opens upward when viewed from above. The inner peripheral surface of the fitting portion 420 is a substantially vertical surface.

[0036] The guide surface 421 guides the movement of the protrusion 62 so that the corresponding protrusion 62 fits into the fitting portion 420 when the top cover 6 is attached to the casing 4. As shown in FIG. 4, the guide surface 421 is formed in an annular shape when viewed from above, and is located around the fitting portion 420. The inner peripheral edge (lower edge) of the guide surface 421 is connected to the upper edge of the fitting portion 420 along its entire length. The guide surface 421 is inclined so that the portion closer to the inner peripheral edge is positioned lower. In other words, the guide surface 421 is inclined so that the portion closer to the upper end is further away from the fitting portion 420.

[0037] 4, a step 500 is formed on the periphery of the upper surface of the upper plate 50. The step 500 is formed over the entire length of the periphery of the upper surface of the upper plate 50. A hanging piece 61, which is the periphery of the top cover 6 attached to the casing 4, is disposed on the step 500.

[0038] The step portion 500 has a vertical surface 501 and a horizontal surface 502. The vertical surface 501 extends downward from the periphery of the upper surface of the upper plate portion 50. The vertical surface 501 is formed over the entire length of the periphery of the upper surface of the upper plate portion 50. The vertical surface 501 is a vertical surface. Note that the vertical surface 501 may be any surface that intersects with the horizontal direction, and is not limited to a vertical surface.

[0039] The horizontal surface 502 extends outward from the lower edge of the vertical surface 501. The horizontal surface 502 is formed over the entire length of the lower edge of the vertical surface 501. The outer peripheral edge of the horizontal surface 502 is connected to the upper edge of the front surface of the front plate portion 51, the upper edges of the outer surfaces of the pair of side plate portions 52, and the upper edge of the rear surface of the rear plate portion 53. In other words, the front surface of the front plate portion 51, the outer surfaces of the pair of side plate portions 52, and the rear surface of the rear plate portion 53 extend downward from the outer peripheral edge of the horizontal surface 502.

[0040] The vertical surface 501 has a front vertical surface 501A, a pair of left and right side vertical surfaces 501B, and a rear vertical surface 501C. The front vertical surface 501A extends downward from the front edge of the upper surface of the upper plate portion 50. The pair of left and right side vertical surfaces 501B extend downward from the left and right side edges of the upper surface of the upper plate portion 50, respectively. The rear vertical surface 501C extends downward from the rear edge of the upper surface of the upper plate portion 50.

[0041] The lateral surface 502 has a front lateral surface 502A, a pair of left and right side lateral surfaces 502B, and a rear lateral surface 502C. The front lateral surface 502A extends forward from the lower edge of the front vertical surface 501A. The pair of left and right side lateral surfaces 502B extend outward in the left-right direction from the lower edges of the pair of left and right side vertical surfaces 501B. The rear lateral surface 502C extends rearward from the lower edge of the rear vertical surface 501C.

[0042] Of the lateral surfaces 502, the pair of left and right side lateral surfaces 502B and the rear lateral surface 502C extend horizontally outward from the lower edges of the pair of left and right side vertical surfaces 501B and the rear vertical surface 501C, respectively. As shown in FIG. 6, a horizontal placing surface 503 is formed at the rear end of the front lateral surface 502A. The placing surface 503 extends forward from the lower edge of the front vertical surface 501A. The placing surface 503 is formed to extend over substantially the entire length of the lower edge of the front vertical surface 501A. The placing surface 503 is the bottom surface of a recess formed at the rear end of the front lateral surface 502A, and extends forward from the lower edge of the front vertical surface 501A except for both left and right ends (see FIG. 4). The portion of the front lateral surface 502A except for the placing surface 503 is inclined downwards as it approaches the front end.

[0043] There is no limitation on the shapes of the cover 5 and the base 40. Furthermore, the casing 4 is not limited to being composed of the base 40 and the cover 5, and may be composed of, for example, three or more members or only one member.

[0044] The top cover 6 shown in Figure 4 is detachable from the casing 4. The top cover 6 is made of synthetic resin. The top cover 6 fits over the upper surface of the upper plate portion 50 of the casing 4, and covers the upper surface of the upper plate portion 50, the operation unit 321, the display unit 323, the battery 33, and the detergent tank 320 (see Figure 3) from above.

[0045] The top cover 6 is formed in the shape of a thin box that opens downward. The top cover 6 has a cover portion 60 that covers the upper surface of the upper plate portion 50 and a hanging piece portion 61 that protrudes downward from the periphery of the cover portion 60. The cover portion 60 is formed in the shape of a plate that conforms to the upper surface of the upper plate portion 50. When viewed from above, the cover portion 60 is formed in a roughly T-shape that overlaps with the upper plate portion 50 of the casing 4, and the left-right width of the rear end portion is greater than the left-right width of the front portion. The front end portion of the cover portion 60 and the upper surface of this front end portion are each inclined or curved so that the portions closer to the front end are positioned downward, similar to the upper surface of the front end portion of the upper plate portion 50 of the casing 4.

[0046] The portions of the cover unit 60 corresponding to each light source 324 of the display unit 323 are light-transmitting portions 63 through which light passes. The light-transmitting portions 63 are, for example, portions that are thinner than other portions of the cover unit 60 or openings that penetrate the cover unit 60. Light emitted from each light source 324 passes through the corresponding light-transmitting portion 63 and emerges above the cover unit 60.

[0047] The hanging piece 61 protrudes downward from the periphery of the cover part 60. The hanging piece 61 is formed integrally with the cover part 60. The hanging piece 61 is formed over the entire length of the periphery of the cover part 60.

[0048] The protruding length L1 (see FIG. 6) of the hanging piece 61 protruding downward from the cover portion 60 is smaller than the protruding length L2 (see FIG. 5) of the front plate portion 51 protruding downward from the upper plate portion 50 of the cover 5. The protruding length L1 of the hanging piece 61 is preferably 20 mm or less to give the top cover 6 a simple, plate-like appearance. The protruding length L1 of the hanging piece 61 is, for example, 6 mm or more and 18 mm or less. However, the protruding length L1 of the hanging piece 61 is not limited.

[0049] The hanging piece 61 has a front hanging piece 61A, a pair of left and right side hanging pieces 61B, and a rear hanging piece 61C. The front hanging piece 61A protrudes downward from the front edge of the cover part 60. The pair of left and right side hanging pieces 61B protrude downward from the left and right side edges of the cover part 60, respectively. The front edges of the pair of left and right side hanging pieces 61B are connected to both left and right side edges of the front hanging piece 61A. The rear hanging piece 61C protrudes downward from the rear edge of the cover part 60. Both left and right side edges of the rear hanging piece 61C are connected to the rear edges of the pair of left and right side hanging pieces 61B, respectively.

[0050] 5 and 6, when the top cover 6 is attached to the casing 4, the lower end surface of the hanging piece 61 is aligned with the horizontal surface 502 of the casing 4, and the inner surface of the hanging piece 61 is aligned with the vertical surface 501 of the casing 4. However, the inner surface of the hanging piece 61 does not contact the vertical surface 501 of the casing 4, but is positioned slightly away from the vertical surface 501. In addition, the lower end surface of the hanging piece 61 is not in contact with the horizontal surface 502, but is positioned slightly above the horizontal surface 502.

[0051] The top cover 6 further has a plurality of ribs 64 shown in Fig. 7. The plurality of ribs 64 are formed on the inner surface of the hanging piece 61 and protrude inward from the hanging piece 61. The plurality of ribs 64 are arranged at intervals in the circumferential direction of the hanging piece 61, which is formed over the entire length of the peripheral edge of the cover part 60. The top cover 6 has, as the plurality of ribs 64, a plurality of front ribs 64A formed on the front hanging piece 61A, a plurality of side ribs 64B formed on each of the left and right side hanging pieces 61B, and a plurality of rear ribs 64C formed on the rear hanging piece 61C.

[0052] Each rib 64 is a rib whose thickness direction is parallel to the circumferential direction of the hanging piece 61 and extends in the vertical direction. As shown in Figures 7 and 8, the front rib 64A and the side ribs 64B are each a vertically long rib that is formed over the entire vertical length of the hanging piece 61, and its upper end is connected to the underside of the cover part 60. As shown in Figure 7, the rear rib 64C is a rib whose front-to-back dimension is longer than its vertical dimension, and its upper end is located in the vertical middle of the rear hanging piece 61C and is not connected to the underside of the cover part 60.

[0053] 6 and 8, each rib 64 is formed across the inner surface and the underside of the hanging piece 61. Each rib 64 has a portion that protrudes inward from the hanging piece 61 and a portion that protrudes downward from the hanging piece 61. As shown in FIG. 6, the inner end surface 640 of each rib 64 is a vertical surface that is parallel to the vertical surface 501. Note that the inner end surface 640 of each rib 64 need only be a surface that intersects with the horizontal direction, and is not limited to a vertical surface.

[0054] The lower end surface 641 of each rib 64 extends outward from the lower edge of the end surface 640. The lower end surface 641 of each rib 64 is a horizontal surface parallel to the lateral surface 502. The lower end surface 641 of each rib 64 is not limited to a horizontal surface as long as it is a surface that intersects the vertical direction. Furthermore, each rib 64 may be formed only on the inner surface of the hanging piece portion 61, and does not have to be formed across the inner surface and the lower end surface of the hanging piece portion 61.

[0055] In addition to the above-described ribs 64, the top cover 6 further includes a plurality of mounting ribs 65 shown in FIG. 7. The mounting ribs 65 are formed on the inner surface of the rear hanging piece 61C. The mounting ribs 65 are arranged at intervals in the left-right direction. In this embodiment, the mounting ribs 65 are formed in the left-right central portion of the rear hanging piece 61C, and a plurality of rear ribs 64C are formed at each of the left-right end portions of the rear hanging piece 61C. Each mounting rib 65 extends upward from the vertical central portion of the rear hanging piece 61C and its upper end is connected to the cover part 60. The lower end surface of each mounting rib 65 is located above the lower end surface of the rear hanging piece 61C. The mounting ribs 65 may be omitted.

[0056] The top cover 6 further has a plurality of protrusions 62. The plurality of protrusions 62 are formed on the underside of the cover portion 60. The plurality of protrusions 62 correspond one-to-one to the plurality of recesses 42 (see FIG. 4) formed in the casing 4. The top cover 6 has a pair of left and right protrusions 62 as the plurality of protrusions 62. The pair of left and right protrusions 62 are formed on the underside of the rear end portion of the cover portion 60. Each protrusion 62 has a plurality of protrusion pieces 620 protruding downward from the cover portion 60. The shape of the protrusions 62 is not limited, and may be composed of only one protrusion piece, for example. The number of protrusions 62 on the top cover 6 is also not limited. The top cover 6 does not have to have any protrusions 62.

[0057] When the top cover 6 is attached to the casing 4, the multiple ribs 64 rest on the horizontal surfaces 502 (see FIG. 4) of the casing 4, and the multiple mounting ribs 65 rest on the upper surface of the top plate portion 50 (see FIG. 4) of the casing 4. In this attached state, the inner end surface 640 (on the vertical surface 501 side) of each rib 64 is aligned with the vertical surface 501 at a position more inward than the hanging piece portion 61, as shown in FIG. 6. When a horizontal force is applied to the top cover 6, the inner end surface 640 of the rib 64 comes into contact with the vertical surface 501, thereby restricting horizontal movement of the top cover 6. In other words, the inner end surface 640 of each rib 64 functions as a restricting surface that restricts horizontal movement of the top cover 6 and determines the horizontal position of the top cover 6 relative to the casing 4.

[0058] The inner end surface 640 of each rib 64 also restricts horizontal movement of the top cover 6 relative to the casing 4, for example, when a user places their hand on the top cover 6 attached to the casing 4. Therefore, even in the case where the protruding length L1 of the hanging piece portion 61 protruding downward from the cover portion 60 is short, as in this embodiment, the top cover 6 attached to the casing 4 is prevented from sliding horizontally and coming off the casing 4.

[0059] The restricting surface formed by the inner end surface 640 of each rib 64 can be positioned closer to the vertical surface 501 with higher precision than when the hanging piece portion 61 is used as the restricting surface. Therefore, the top cover 6 can be attached to the casing 4 with the top cover 6 positioned with high precision in the horizontal direction. Note that, when the top cover 6 is attached to the casing 4, the inner end surface 640 of each rib 64 may or may not contact the vertical surface 501.

[0060] The top cover 6 attached to the casing 4 is restricted from moving downward as the lower end surfaces 641 of the multiple ribs 64 come into contact with the side surfaces 502 of the casing 4 and the lower end surfaces of the multiple mounting ribs 65 (see FIG. 7) come into contact with the upper surface of the top plate portion 50 of the casing 4. That is, the lower end surfaces of the ribs 64 and the lower end surfaces of the mounting ribs 65 function as restricting surfaces that restrict the downward movement of the top cover 6. Therefore, compared to a case where the lower surface of the cover portion 60 and the lower end surfaces of the hanging piece portions 61 function as restricting surfaces, the top cover 6 can be attached to the casing 4 in a state where it is positioned more accurately in the up-down direction. Among the multiple ribs 64, the lower end surface of the front rib 64A comes into contact with the mounting surface 503.

[0061] The top cover 6 can be attached simply by placing it in a predetermined position on the casing 4. The top cover 6 attached to the casing 4 can be removed from the casing 4 simply by moving it upward.

[0062] As shown in FIG. 4, the top cover 6 removed from the casing 4 can be attached to the casing 4 by moving it downward so that the portion of the upper plate 50 of the casing 4 that is inner than the step 500 fits into the inside of the hanging piece 61 and the multiple ribs 64. At this time, even if the horizontal position of the top cover 6 relative to the casing 4 is slightly misaligned, the protrusions 62 (see FIG. 7) of the top cover 6 move along the guide surfaces 421 of the corresponding recesses 42, and the top cover 6 moves horizontally so that each protrusion 62 fits into the fitting portion 420 of the corresponding recess 42, thereby attaching it to the casing 4. This makes it easy to attach the top cover 6 to the casing 4. Note that, in this embodiment, each protrusion 62 does not contact the inner surface or bottom surface of the corresponding recess 42 when the top cover 6 is attached to the casing 4, as shown in FIG. 9, but may contact them.

[0063] (2) Mode As is clear from the above-described embodiment, the toilet seat device (3) of the first aspect has the following configuration. The toilet seat device (3) includes a casing (4), a toilet seat (30), and a top cover (6). The toilet seat (30) is attached to the casing (4). The top cover (6) covers the upper surface of the casing (4). The casing (4) has a vertical surface (501) extending downward from the edge of the upper surface of the casing (4). The top cover (6) includes a cover portion (60), a hanging piece (61), and a rib (64). The cover portion (60) covers the upper surface of the casing (4). The hanging piece (61) projects downward from the cover portion (60) and follows the vertical surface (501). The rib (64) projects from the hanging piece (61) toward the vertical surface (501) and extends in the up-down direction.

[0064] In this embodiment, the ribs 64 can be positioned accurately close to the vertical surface 501. Therefore, the top cover 6 can be attached to the casing 4 while being positioned accurately in the horizontal direction.

[0065] The toilet seat device (3) of the second embodiment can be realized by combining it with the toilet seat device of the first embodiment. The vertical surface (501) of the second embodiment is a vertical surface.

[0066] According to this embodiment, when a horizontal force is applied to the top cover (6) attached to the casing (4), the end face (640) of the rib (64) comes into contact with the vertical surface (501), thereby appropriately suppressing horizontal movement of the top cover (6).

[0067] The toilet seat device (3) of the third aspect can be realized by combining it with the first or second aspect. The third aspect has the following configuration. The casing (4) has a horizontal surface (502) extending outward from the lower edge of the vertical surface (501). The rib (64) has a lower end surface (641) that is aligned with the horizontal surface (502). According to this aspect, the lower end surface (641) of the rib (64) can be positioned accurately close to the horizontal surface (502). Therefore, the top cover (6) can be attached to the casing (4) while being positioned accurately in the vertical direction.

[0068] The toilet seat device (3) of the fourth aspect can be realized by combining it with any one of the aspects 1 to 3. The top cover (6) of the fourth aspect has a plurality of ribs (64) spaced apart in a direction intersecting the up-down direction.

[0069] According to this embodiment, the end faces (640) of the plurality of ribs (64) can be positioned close to the vertical surface (501) with high precision, and the top cover (6) can be attached to the casing (4) with its positioning in the horizontal direction being more precise.

[0070] The toilet seat device (3) of the fifth aspect can be realized by combining it with any one of the first to fourth aspects. The fifth aspect has the following configuration. The top cover (6) has a protrusion (62) formed on the lower surface of the cover portion (60). The casing (4) has a recess (42) formed on the upper surface of the casing (4). The recess (42) has a fitting portion (420) and a guide surface (421). The fitting portion (420) fits into the protrusion (62). The lower end of the guide surface (421) is connected to the upper end of the fitting portion (420), and the closer to the upper end, the more it is separated outward from the fitting portion (420) when viewed from above.

[0071] According to this embodiment, when the top cover (6) is attached to the casing (4), the guide surface (421) guides the movement of the protrusion (62) so that the protrusion (62) fits into the fitting portion (420). This makes it easy to attach the top cover (6) to the casing (4).

[0072] The toilet seat device (3) of the sixth aspect can be realized by combining it with any one of the aspects 1 to 5. The hanging piece portion (61) of the sixth aspect has a downward protruding length (L1) from the cover portion (60) of 20 mm or less.

[0073] According to this embodiment, even though the protruding length (L1) of the hanging piece portion (61) is short, the end face (640) of the rib (64) comes into contact with the vertical surface (501), thereby appropriately preventing the top cover (6) from moving horizontally.

[0074] The toilet bowl apparatus (1) of the seventh aspect has the following configuration. The toilet bowl apparatus (1) includes a toilet seat apparatus (3) and a toilet bowl (21). The toilet seat apparatus (3) is the toilet seat apparatus (3) of any one of the first to sixth aspects. The toilet seat apparatus (3) is installed in the toilet bowl (21).

[0075] According to this embodiment, the top cover (6) can be attached to the casing (4) while being positioned with high horizontal accuracy. [Explanation of symbols]

[0076] L1 Protruding length of hanging piece 1 Toilet equipment 21 Toilet 3 Toilet seat device 30 toilet seats 4 Casing 42 recess 420 fitting part 421 Guide surface 501 vertical surface 502 Side 6 Top cover 60 Cover 61 Hanging piece part 62 protrusion 64 Ribs 641 Lower end surface

Claims

1. A container-shaped casing that opens downward; a toilet seat attached to the casing; a top cover that is detachably fitted onto an upper surface of the casing; The casing comprises: A vertical surface extending downward from a peripheral edge of the upper surface; a lateral surface extending outward from a lower edge of the vertical surface; the vertical surface and the horizontal surface are located at an upper end of the casing; The top cover is A cover portion that covers the upper surface; A hanging piece portion that protrudes downward from a peripheral edge of the cover portion and extends along the vertical surface; a rib extending in an up-down direction and protruding from the hanging piece portion toward the vertical surface, The rib is A lower end surface along the lateral surface, The top cover has a plurality of the ribs spaced apart in a direction intersecting with the up-down direction. Toilet seat device.

2. The longitudinal surface is a vertical surface.

2. A toilet seat apparatus as claimed in claim 1.

3. A casing, a toilet seat attached to the casing; a top cover that covers an upper surface of the casing; The casing comprises: A vertical surface extending downward from an edge of the upper surface, The top cover is A cover portion that covers the upper surface; A hanging piece portion that protrudes downward from the cover portion and extends along the vertical surface; a rib extending in an up-down direction and protruding from the hanging piece portion toward the vertical surface, The top cover is A protrusion is formed on the lower surface of the cover portion, The casing comprises: A recess formed on the top surface, The recessed portion is a fitting portion into which the protrusion fits; A guide surface having a lower end connected to an upper end of the fitting portion, and a portion closer to the upper end is more distant from the fitting portion when viewed from above. Toilet seat device.

4. The downward protruding length of the hanging piece portion from the cover portion is 20 mm or less. A toilet seat device according to any one of claims 1 to 3.

5. A toilet seat device according to any one of claims 1 to 4, and a toilet bowl on which the toilet seat device is installed. Toilet device.

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