JP7675389B2 - Toilet seat device and toilet bowl device - Google Patents

Description

This disclosure relates to a toilet seat device and a toilet bowl device.

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.

JP 2019-170866 A

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

This disclosure has been made in consideration of the above-mentioned reasons, and aims to provide a toilet seat apparatus and a toilet bowl apparatus in which the top cover can be positioned and arranged with high precision relative to the casing.

A toilet seat device 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 the edge of the upper surface. The top cover has a cover portion that covers the upper surface, a hanging piece that protrudes downward from the cover portion and follows the vertical surface, and a rib that extends in the vertical direction and protrudes from the hanging piece toward the vertical surface.

A toilet device according to one aspect of the present disclosure includes the toilet seat device and a toilet bowl. The toilet seat device is installed in the toilet bowl.

In the toilet seat device and toilet bowl device according to the above aspect, the top cover can be positioned and arranged with high precision relative to the casing.

FIG. 1 is a side view of a toilet apparatus according to one embodiment of the present disclosure. FIG. 2 is a perspective view of the toilet device, in which the side cover, rear cover, etc. are omitted. FIG. 3 is a perspective view of the rear part of the toilet device, with the top cover and toilet lid omitted. FIG. 4 is an exploded perspective view of a cover and a top cover of the toilet device. FIG. 5 is a cross-sectional view showing a state where a top cover is attached to the cover of the above embodiment. FIG. 6 is an enlarged view of a portion A1 in FIG. FIG. 7 is a perspective view of the top cover. FIG. 8 is an enlarged view of a portion A2 in FIG. 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.

This disclosure relates to a toilet seat device and a toilet bowl device, and more specifically to a toilet seat device equipped with a top cover that covers the upper surface of a casing, and a toilet bowl device equipped with this toilet seat device.

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

The toilet device 1 comprises a toilet device main body 2 and a toilet seat device 3. The toilet seat device 3 is installed in the toilet device main body 2 and constitutes a part of the toilet device 1.

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 by fasteners such as screws. The frame 20 reinforces the toilet 21.

As shown in FIG. 1, the toilet 21 has a toilet body 22, a pair of left and right side covers 23, and a rear cover 24. Each of the toilet body 22, the pair of left and right side covers 23, and the rear cover 24 is made of synthetic resin.

As shown in FIG. 2, the toilet body 22 has a bowl 220, a rim 221, and a skirt 222. The bowl 220 is a part that receives stool 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 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.

The pair of left and right side covers 23 and the rear cover 24 shown in FIG. 1 are each 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.

The material of the toilet body 22 is not limited to synthetic resin, and may be made of ceramic, for example. The shape of the toilet body 22 is not limited. The toilet device body 2 does not have to have a frame 20.

The toilet seat device 3 is installed on the 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, the state in which the top cover 6 is attached to the casing 4 will be described.

The casing 4 is located at the rear end and upper end of the toilet device 1. The toilet seat 30 and the toilet lid 31 are rotatably attached to the casing 4. The toilet seat 30 and the 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.

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 opens 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. Note that the shape of the base 40 is not limited. Also, the material of the base 40 is not limited to synthetic resin.

The base 40 is provided with a functional unit 32 that adds functions to the toilet seat device 3. The functional unit 32 has multiple mechanisms. The functional unit 32 has multiple mechanisms, such as a bowl cleaning mechanism, a private parts cleaning mechanism, a drying mechanism, and a deodorizing mechanism.

The bowl cleaning mechanism cleans the bowl 220. The bowl cleaning mechanism has, for example, a water discharge device that discharges water into the bowl 220, a detergent tank 320 (see FIG. 3), and a detergent mixing device that mixes the detergent stored in the detergent tank 320 with the water discharged into the bowl 220 by the water discharge device. 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 to the private parts of the user to dry them. The deodorizing mechanism sucks in the air in the bowl 220 and removes odors contained in the air. The functional unit 32 is not limited, and may have only a part of the multiple mechanisms described above, or may have mechanisms other than those described above.

The casing 4 further has a cover 5 shown in Figs. 3 to 5. The cover 5 constitutes the upper part of the casing 4. The cover 5 is formed in a container shape that opens downward. The cover 5 is made of synthetic resin. The cover 5 is attached to the base 40 (see Fig. 1). Note that the cover 5 is not limited to being made of synthetic resin.

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.

As shown in FIG. 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.

The upper surface of the upper plate portion 50 constitutes 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 being greater than the left-right width of the front portion. The portion of the upper plate portion 50 rearward of the front end is formed in a roughly horizontal plate shape. The front end of the upper plate portion 50 and the upper surface of this front end are inclined or curved so that the portion located further forward is positioned lower.

The front plate portion 51 protrudes downward from the front edge of the upper plate portion 50. The front plate portion 51 is formed over the entire length of the front edge of the upper plate portion 50. The front plate portion 51 protrudes downward from the upper plate portion 50 in a smaller dimension than the pair of left and right side plate portions 52 and the rear plate portion 53. The lower edge of the front plate portion 51 is located above the lower edges of the side plate portions 52 and the rear plate portion 53.

The pair of left and right side plate portions 52 protrude downward from the left and right side edges of the upper plate portion 50, respectively. Each side plate portion 52 is formed over 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. Each side plate portion 52 is formed with a toilet seat attachment portion 520 and a toilet lid attachment portion 521. The end of the toilet seat 30 (see FIG. 1) is rotatably attached to the toilet seat attachment portion 520 of the pair of left and right side plate portions 52. The end of the toilet lid 31 (see FIG. 1) is rotatably attached to the toilet lid attachment portion 521 of the pair of left and right side plate portions 52.

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.

The functional unit 32 further includes 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 includes a plurality of operation buttons 322 provided on the upper surface of the upper plate portion 50. The display unit 323 includes 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 by, for example, changing the light emission state of the plurality of light sources 324. Note that the toilet seat device 3 does not necessarily have to include the operation unit 321 and the display unit 323.

The casing 4 has a plurality of storage sections 41. Each storage section 41 stores a component of the toilet device 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 device 3. The battery storage section 410 is a recess formed on the upper 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.

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

The shape, size, and position of each of the battery storage section 410 and the tank storage section 411 are not limited. The casing 4 may have storage sections other than the battery storage section 410 and the tank storage section 411. The casing 4 may not have the storage section 41.

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 of the upper plate portion 50, respectively. 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.

As shown in FIG. 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.

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 corresponding protrusion 62 fits into the fitting portion 420. As shown in FIG. 4, the guide surface 421 is formed in a circular 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 over 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 positioned further outward from the fitting portion 420.

As shown in FIG. 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.

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 being a vertical surface.

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.

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.

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

Of the horizontal surfaces 502, the pair of left and right side horizontal surfaces 502B and the rear horizontal 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 placement surface 503 is formed at the rear end of the front horizontal surface 502A. The placement surface 503 extends forward from the lower edge of the front vertical surface 501A. The placement surface 503 is formed so as to extend over approximately the entire length of the lower edge of the front vertical surface 501A. The placement surface 503 is the bottom surface of a recess formed at the rear end of the front horizontal surface 502A, and extends forward from the rest of the lower edge of the front vertical surface 501A except for both left and right ends (see FIG. 4). The rest of the front horizontal surface 502A except for the placement surface 503 is inclined so that the closer to the front end, the lower the position.

The shapes of the cover 5 and the base 40 are not limited. 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.

The top cover 6 shown in FIG. 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 FIG. 3) from above.

The top cover 6 is formed in a thin box shape 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 a plate shape 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 is greater than the left-right width of the front portion. The front end of the cover portion 60 and the upper surface of this front end are each inclined or curved so that the portions closer to the front end are positioned lower, similar to the upper surface of the front end of the upper plate portion 50 of the casing 4.

The portions of the cover 60 that correspond to the light sources 324 of the display 323 are translucent portions 63 through which light passes. The translucent portions 63 are, for example, portions that are thinner than other portions of the cover 60 or openings that penetrate the cover 60. The light emitted from each light source 324 passes through the corresponding translucent portion 63 and exits above the cover 60.

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

The protruding length L1 (see FIG. 6) of the hanging piece portion 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 portion 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 portion 61 is, for example, 6 mm or more and 18 mm or less. Note that the protruding length L1 of the hanging piece portion 61 is not limited.

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. The 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.

As shown in Figures 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 along the horizontal surface 502 of the casing 4, and the inner surface of the hanging piece 61 is aligned along 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 outwardly from the vertical surface 501. In addition, the lower end surface of the hanging piece 61 does not contact the horizontal surface 502, but is positioned slightly upwardly from the horizontal surface 502.

The top cover 6 further has a number of ribs 64 as shown in FIG. 7. The ribs 64 are formed on the inner surface of the hanging piece portion 61 and protrude inward from the hanging piece portion 61. The ribs 64 are arranged at intervals in the circumferential direction of the hanging piece portion 61 formed over the entire length of the periphery of the cover portion 60. The top cover 6 has, as the number of ribs 64, a number of front ribs 64A formed on the front hanging piece portion 61A, a number of side ribs 64B formed on each of the left and right side hanging piece portions 61B, and a number of rear ribs 64C formed on the rear hanging piece portion 61C.

Each rib 64 is a rib whose thickness direction is parallel to the circumferential direction of the hanging piece portion 61 and extends in the vertical direction. As shown in Figures 7 and 8, the front rib 64A and the side rib 64B are each vertically long ribs that are formed over the entire vertical length of the hanging piece portion 61, and their upper ends are connected to the underside of the cover portion 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 the upper end of the rear rib 64C is located in the vertical middle of the rear hanging piece portion 61C and is not connected to the underside of the cover portion 60.

As shown in Figures 6 and 8, each rib 64 is formed across the inner surface of the hanging piece portion 61 and the underside of the hanging piece portion 61. Each rib 64 has a portion that protrudes inward from the hanging piece portion 61 and a portion that protrudes downward from the hanging piece portion 61. As shown in Figure 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 may be any surface that intersects with the horizontal direction, and is not limited to being a vertical surface.

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 horizontal surface 502. The lower end surface 641 of each rib 64 may be any surface that intersects with the vertical direction, and is not limited to being a horizontal surface. 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.

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

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 on 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 not limited. The top cover 6 does not need to have any protrusions 62.

When the top cover 6 is attached to the casing 4, the multiple ribs 64 rest on the horizontal surface 502 (see FIG. 4) of the casing 4, and the multiple mounting ribs 65 rest on the upper surface of the upper plate portion 50 (see FIG. 4) of the casing 4. In this attached state, the inner end surface 640 (vertical surface 501 side) of each rib 64 is aligned with the vertical surface 501 at a position inner 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 the 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 the horizontal movement of the top cover 6 and determines the horizontal position of the top cover 6 relative to the casing 4.

The inner end surface 640 of each rib 64 also restricts the top cover 6 from moving horizontally relative to the casing 4, for example, when the user places his or her hand on the top cover 6 attached to the casing 4. Therefore, even if 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.

The regulating surface formed by the inner end surface 640 of each rib 64 can be positioned closer to the vertical surface 501 with greater precision than when the hanging piece portion 61 is used as the regulating surface. Therefore, the top cover 6 can be attached to the casing 4 with a highly precise positioning 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 be in contact with the vertical surface 501.

When the top cover 6 is attached to the casing 4, the lower end surfaces 641 of the ribs 64 contact the side surface 502 of the casing 4, and the lower end surfaces of the mounting ribs 65 (see FIG. 7) contact the upper surface of the upper plate portion 50 of the casing 4, restricting downward movement of the top cover 6. 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 the case where the lower surface of the cover portion 60 and the lower end surface of the hanging piece portion 61 function as restricting surfaces, the top cover 6 can be attached to the casing 4 in a state where it is positioned accurately in the vertical direction. Of the multiple ribs 64, the lower end surface of the front rib 64A contacts the mounting surface 503.

The top cover 6 is attached to the casing 4 simply by placing it in a specified position. Once attached to the casing 4, the top cover 6 can be removed from the casing 4 simply by moving it upwards.

As shown in FIG. 4, the top cover 6 removed from the casing 4 can be attached to the casing 4 by moving downward so that the inner part of the step 500 in the upper plate 50 of the casing 4 fits into the inner side 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, so that the top cover 6 moves horizontally so that each protrusion 62 fits into the fitting portion 420 of the corresponding recess 42 and is attached to the casing 4. Therefore, the top cover 6 can be easily attached to the casing 4. Note that, in the present embodiment, each protrusion 62 does not contact the inner surface and bottom surface of the corresponding recess 42 as shown in FIG. 9 when the top cover 6 is attached to the casing 4, but may contact them.

(2) Aspects As is clear from the embodiment described above, 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) has a cover portion (60), a hanging piece portion (61), and a rib (64). The cover portion (60) covers the upper surface of the casing (4). The hanging piece portion (61) protrudes downward from the cover portion (60) and follows the vertical surface (501). The rib (64) protrudes from the hanging piece portion (61) toward the vertical surface (501) and extends in the up-down direction.

In this embodiment, the rib (64) can be positioned precisely close to the vertical surface (501). Therefore, the top cover (6) can be attached to the casing (4) while being precisely positioned in the horizontal direction.

The toilet seat device (3) of the second aspect can be realized in combination with the first aspect. The vertical surface (501) of the second aspect is a vertical surface.

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 preventing the top cover (6) from moving in the horizontal direction.

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) that extends 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 precisely close to the horizontal surface (502). Therefore, the top cover (6) can be attached to the casing (4) with precise positioning in the vertical direction.

The toilet seat device (3) of the fourth aspect can be realized by combining it with any one of the first to third aspects. The top cover (6) of the fourth aspect has a plurality of ribs (64) spaced apart in a direction intersecting the vertical direction.

According to this embodiment, the end faces (640) of the multiple ribs (64) can be positioned precisely close to the vertical surface (501), and the top cover (6) can be attached to the casing (4) with the top cover (6) positioned more precisely in the horizontal direction.

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 underside 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 protrusion (62) fits into the fitting portion (420). 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 further outwardly the guide surface (421) is from the fitting portion (420) when viewed from above.

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).

The toilet seat device (3) of the sixth aspect can be realized by combining it with any one of the first to fifth aspects. 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.

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), so that the top cover (6) can be appropriately prevented from moving in the horizontal direction.

The toilet bowl device (1) of the seventh aspect has the configuration shown below. The toilet bowl device (1) includes a toilet seat device (3) and a toilet bowl (21). The toilet seat device (3) is any one of the toilet seat devices (3) of the first to sixth aspects. The toilet bowl (21) is provided with the toilet seat device (3).

According to this embodiment, the top cover (6) can be attached to the casing (4) while being precisely positioned in the horizontal direction.

L1: Length of protrusion of hanging piece 1: Toilet device 21: Toilet 3: Toilet seat device 30: Toilet seat 4: Casing 42: Recess 420: Fitting 421: Guide surface 501: Vertical surface 502: Horizontal surface 6: Top cover 60: Cover portion 61: Hanging piece 62: Protrusion 64: Rib 641: Lower end surface

Claims (5)

A container-like 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 horizontal 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. The longitudinal surface is a vertical surface.
2. A toilet seat apparatus as claimed in claim 1. 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. The length of the hanging piece portion protruding downward from the cover portion is 20 mm or less.
A toilet seat device according to any one of claims 1 to 3. 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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