Urinal

Abstract

To provide a urinal capable of improving the maintainability of a vacuum breaker.SOLUTION: A urinal comprises a bowl portion, a water discharge portion, a functional portion, and a storage portion. The bowl portion receives urine. The water discharge portion discharges cleaning water into the bowl portion. The functional portion supplies cleaning water to the water discharge portion. The storage portion is formed on an upper rear side of the bowl portion and stores the functional portion. The functional portion includes: a vacuum breaker that is provided in a water supply passage to the water discharge portion and prevents backflow of sewage from the water discharge portion; and a diaphragm that is provided upstream of the vacuum breaker and switches between a water stop state that closes the water supply passage and a water supply state that opens the water supply passage. The vacuum breaker is arranged above the diaphragm.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The disclosed embodiments relate to a urinal. [Background technology]

[0002] Conventionally, there is known a urinal that has a storage section provided on the upper rear side of a bowl section that receives urine from a user, and is configured to store a functional section in the storage section (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-203340 A Summary of the Invention [Problem to be solved by the invention]

[0004] In order to meet the regulations of the country or place where the urinal is installed, the urinal may be equipped with a vacuum breaker that prevents wastewater from backflowing into the water supply line. Such a vacuum breaker is a device that requires relatively frequent maintenance. Therefore, there is a demand for improved maintainability of the vacuum breaker in the urinal.

[0005] An object of one aspect of the embodiment is to provide a urinal that can improve the ease of maintenance of a vacuum breaker. [Means for solving the problem]

[0006] A urinal in one embodiment comprises a bowl portion for receiving urine, a water discharge portion for discharging cleaning water into the bowl portion, a functional portion for supplying cleaning water to the water discharge portion, and a storage portion formed on the upper rear side of the bowl portion for storing the functional portion, wherein the functional portion includes a vacuum breaker provided in a water supply passage to the water discharge portion for preventing backflow of sewage from the water discharge portion, and a diaphragm provided upstream of the vacuum breaker for switching between a water stop state that closes the water supply passage and a water supply state that opens the water supply passage, and wherein the vacuum breaker is positioned above the diaphragm.

[0007] As a result, the vacuum breaker is disposed in a position in the storage section that is easily accessible from above, and an operator can easily perform maintenance on the vacuum breaker. In other words, by disposing the vacuum breaker above the diaphragm, it is possible to improve the maintainability of the vacuum breaker, which requires relatively frequent maintenance.

[0008] The functional unit is characterized in that it further includes a power generation unit provided upstream of the vacuum breaker and which generates power using the flow of cleaning water in the water supply passage.

[0009] In this way, by providing the power generation unit upstream of the vacuum breaker, it is possible to prevent backflow of sewage from the water discharge unit to the power generation unit, etc.

[0010] The vacuum breaker is also characterized in that it is fixed to the water discharge section.

[0011] In this way, by fixing the vacuum breaker to the water outlet, the relative positional relationship between the vacuum breaker and the water outlet can be prevented from changing due to the water force during flushing, and the vacuum breaker can ensure its intended performance. In other words, for example, if the vacuum breaker is fixed to a location other than the water outlet, the relative positional relationship between the vacuum breaker and the water outlet may change due to the water force during flushing, and the vacuum breaker may tilt relative to the water outlet. In such a case, for example, the valve body of the vacuum breaker may have difficulty moving vertically, and the intended performance may not be ensured.

[0012] Therefore, by fixing the vacuum breaker to the water discharge section, the relative position of the vacuum breaker to the water discharge section can be prevented from changing, which can prevent the occurrence of events such as the valve body becoming difficult to operate, and ensure the desired performance of the vacuum breaker.

[0013] The vacuum breaker also comprises a water passage having a water inlet on the upstream side and a water outlet on the downstream side, an air inlet connecting the water passage with the outside, and a valve body provided within the water passage that operates vertically due to the water pressure of cleaning water, thereby connecting the water inlet and the water outlet when water is passing through, and connecting the water passage with the air inlet when water is not passing through.

[0014] In this way, the vacuum breaker is a type of vacuum breaker in which the valve body operates vertically in the water passage by the water pressure of the flushing water. In other words, since the vacuum breaker is configured so that flushing water is supplied from below, it is possible to place the vacuum breaker in a position that is above each device that constitutes the functional section. This allows the vacuum breaker to be placed in a position that is easier to access from above in the storage section, for example, and further improves the maintainability of the vacuum breaker.

[0015] The vacuum breaker further includes a water receiving section for receiving cleaning water that overflows from the air inlet, and the water receiving section includes a drain outlet for discharging the received cleaning water, and a wall section formed to surround the drain outlet.

[0016] As a result, in the water receiving section, the discharge path for the cleaning water collected by the water receiving section can be divided into two paths, one through the discharge port and the other through the air inlet, allowing the collected cleaning water to be discharged quickly. Also, since a wall is provided around the discharge port, the collected cleaning water that does not exceed the wall is discharged from the air inlet side. Since the air inlet has a relatively large opening diameter, the collected cleaning water can be discharged quickly.

[0017] The water receiving portion is characterized in that a bottom surface portion for receiving the cleaning water is formed so as to slope downwardly toward the air inlet port.

[0018] This allows the cleaning water collected in the water receiving portion to easily flow to the air inlet, so that the cleaning water can be discharged from the air inlet quickly.

[0019] The water discharge section is further characterized by having a first water discharge hole that discharges flushing water supplied from the water supply passage into the bowl section, and a second water discharge hole that discharges flushing water supplied from the water receiving section through the drain outlet into the bowl section.

[0020] This allows flushing water discharged from the outlet of the water receiving section to be reliably discharged to the bowl section side. That is, for example, when flushing water discharged from the outlet of the water receiving section is connected to the first water discharge hole, flushing water with a water force for washing the bowl section flows through the first water discharge hole, and the flushing water may be pushed by the water force and become difficult to discharge from the outlet. Therefore, by providing the second water discharge hole in addition to the first water discharge hole in the water discharge section, flushing water discharged from the outlet of the water receiving section can be reliably discharged to the bowl section side.

[0021] Moreover, the second water discharge hole is provided above the first water discharge hole.

[0022] This allows the distance between the second water discharge hole and the water receiving portion located above the second water discharge hole to be closer than when the second water discharge hole is located below or to the side of the first water discharge hole. Therefore, for example, the length of the connecting pipe connecting the second water discharge hole and the water receiving portion can be shortened, making it easier to handle the connecting pipe. Effect of the Invention

[0023] According to one aspect of the embodiment, the maintainability of the vacuum breaker can be improved. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a side cross-sectional view of a urinal according to an embodiment. [Diagram 2] FIG. 2 is a top view of the urinal according to the embodiment. [Diagram 3] FIG. 3 is a perspective view of the functional section and the water discharge section. [Figure 4] FIG. 4 is a front view of the functional section and the water discharge section. [Diagram 5] FIG. 5 is a block diagram showing a configuration example of the functional section and the water discharge section. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] FIG. 7 is a diagram for explaining a method of fixing the vacuum breaker and the water discharger. [Figure 8] FIG. 8 is a top view of the water receiving portion. [Figure 9] FIG. 9 is an end view taken along line IX-IX in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, an embodiment of a urinal disclosed in the present application will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiment described below.

[0026] (Embodiment) A urinal 1 according to an embodiment will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a side cross-sectional view of the urinal 1 according to an embodiment. Fig. 2 is a top view of the urinal 1 according to an embodiment. Figs. 1 and 2, and Fig. 3 onwards, which will be described later, are all schematic diagrams.

[0027] 1 and 2, for convenience of explanation, a three-dimensional Cartesian coordinate system is illustrated which defines mutually orthogonal X-axis, Y-axis, and Z-axis directions, with the positive Z-axis direction being the vertically upward direction. In the following explanation, the positive X-axis direction may be described as "right", the negative X-axis direction as "left", the positive Y-axis direction as "forward", and the negative Y-axis direction as "rear". For this reason, in the following explanation, the X-axis direction may be referred to as the left-right direction, the Y-axis direction as the front-back direction, and the Z-axis direction as the up-down direction (vertical direction). Such Cartesian coordinate systems may also be shown in other figures.

[0028] As shown in Figures 1 and 2, a urinal 1 according to the embodiment is installed in a toilet room. The urinal 1 may be a wall-mounted type installed on a wall surface, or a floor-standing type installed on a floor surface. The urinal 1 has a urinal body 2, which is made of, for example, ceramic.

[0029] The urinal body 2 comprises a bowl section 3, a drainage section 5, a storage section 6, a functional section 10, and a water discharge section 20.

[0030] The bowl section 3 is formed on the front surface (front face) of the urinal body 2, which faces the user. The bowl section 3 is formed with a bowl surface 4 that receives the user's urine. The bowl surface 4 is formed so that it is recessed inward (towards the center in the left-right direction of the bowl section 3) and towards the back (rear side) as it extends downward from the top end. The bowl surface 4 is also formed so that it curves gently from near the center in the up-down direction towards the rear from the bottom.

[0031] A water discharger 20 is provided on the upper part of the bowl surface 4. Cleansing water is discharged from the water discharger 20 onto the bowl surface 4 of the bowl section 3, cleaning the bowl surface 4. A drainage section 5 is provided on the lower part of the bowl surface 4.

[0032] As shown in FIG. 1, the drain section 5 includes a drain outlet 5a and a drain trap section 5b. The drain outlet 5a is formed in the lower part of the bowl surface 4 of the bowl section 3, and flushing water that has washed the bowl surface 4 is drained through the drain outlet 5a. The drain trap section 5b is connected to the downstream side of the drain outlet 5a. The drain trap section 5b stores flushing water to form a water seal, and prevents odors and the like from the drain pipe from flowing back toward the bowl section 3. A drain socket 100 is connected to the downstream side of the drain trap section 5b, and flushing water is drained from the drain trap section 5b through the drain socket 100 to an external drain pipe (not shown).

[0033] The storage section 6 is formed on the upper rear side of the bowl section 3 and stores the functional section 10. The storage section 6 has a bottom section 6a, a front wall section 6b, and left and right side wall sections 6c. The space surrounded by the bottom section 6a, the front wall section 6b, and the left and right side wall sections 6c becomes a storage space S that stores the functional section 10. A top cover 6d is attached to the top of the storage section 6 from above so as to be detachable from the storage section 6. Note that FIG. 2 shows a state in which the top cover 6d has been removed. The top of the storage space S is closed by the top cover 6d.

[0034] Specifically, the bottom 6a is located below the functional unit 10. The bottom 6a supports the functional unit 10 from below. The bottom 6a may directly support the functional unit 10, or may indirectly support the functional unit 10 via a support member. Also, a part or the whole of the functional unit 10 may be fixed and supported at a location other than the bottom 6a.

[0035] The front wall 6b is a wall formed so as to rise upward from the front end (front edge) of the bottom 6a. The left and right side walls 6c are walls formed so as to rise upward from the left and right side ends (side edges) of the bottom 6a. The bottom 6a, the front wall 6b, and the left and right side walls 6c are integrally formed, and a storage space S with an open rear is formed by being surrounded by the bottom 6a, the front wall 6b, and the left and right side walls 6c.

[0036] In this way, the storage section 6 is not disposed further above the bowl section 3, but is disposed at the upper rear side of the bowl section 3 so that the functional section 10 is hidden within the bowl section 3. This gives the urinal 1 a compact appearance.

[0037] The functional unit 10 has a function of supplying flushing water to the water discharge unit 20. The configuration of the functional unit 10 varies depending on the country or location in which the urinal 1 is installed. For example, to satisfy regulations set forth in the country in which the urinal 1 is installed, the functional unit 10 may include a vacuum breaker that prevents sewage from backflowing up the water supply line. Such a vacuum breaker is a device that requires relatively frequent maintenance. For example, since the vacuum breaker includes rubber members and the like, regular maintenance is required.

[0038] Therefore, in this embodiment, the vacuum breaker is configured to improve the ease of maintenance.

[0039] This configuration will be described with reference to Figs. 3 to 5. Fig. 3 is a perspective view of functional unit 10 and water discharge unit 20, and Fig. 4 is a front view of functional unit 10 and water discharge unit 20. Fig. 5 is a block diagram showing an example of the configuration of functional unit 10 and water discharge unit 20. For ease of understanding, Figs. 3 and 4 only show functional unit 10 and water discharge unit 20. Figs. 3 and 4 also show the functional unit 10 stored in storage unit 6, and the water discharge unit 20 attached to bowl unit 3.

[0040] For example, an automatic cleaning unit that automatically cleans bowl surface 4 (see FIG. 1) can be used as functional section 10. Specifically, as shown in FIGS. 3 to 5, functional section 10 includes water supply passage 30 (see FIG. 5), stop valve 40, constant flow valve 50 (see FIG. 5), diaphragm 60, solenoid valve 70, generator 80, and vacuum breaker 90.

[0041] Each device of the functional section 10 will be described with reference to Fig. 5. The water supply passage 30 is a flow path to which flush water is supplied from a water supply source (not shown) such as a water main. The stopcock 40 is connected to the water supply passage 30, and supplies and stops flush water to each device on the downstream side. The constant flow valve 50 is connected to the water supply passage 30 downstream of the stopcock 40, and throttles the flowing flush water to a predetermined flow rate or less.

[0042] The diaphragm 60 is connected to the downstream side of the constant flow valve 50 in the water supply passage 30, and a pressure chamber 61 is provided adjacent to the diaphragm 60. In addition, a solenoid valve 70 is connected to the downstream side of the diaphragm 60 in the water supply passage 30. The solenoid valve 70 operates the diaphragm 60 by changing the pressure in the pressure chamber 61, and controls the flow of flush water in the water supply passage 30.

[0043] Specifically, the solenoid valve 70 opens when a user is detected by the human body detection sensor 200 provided at an appropriate position on the urinal 1 (for example, the water outlet 20) and an open signal is input from a control unit (not shown). This causes the pressure chamber 61 to drop, causing the diaphragm 60 to open the water supply passage 30 and allow the supplied flush water to flow downstream. On the other hand, the solenoid valve 70 closes when a close signal is input from the control unit, causing the pressure chamber 61 to rise and the diaphragm 60 to block the water supply passage 30 and stop the supply of flush water. In this way, the diaphragm 60 switches between a water stop state in which the water supply passage 30 is closed and a water supply state in which the water supply passage 30 is open.

[0044] The generator 80 is connected to the water supply passage 30 downstream of the constant flow valve 50, and generates power using the flow of flush water in the water supply passage 30. Specifically, the generator 80 is connected to a branch flow passage 31 that branches off from the water supply passage 30, and is a hydroelectric generator that generates power using the flow of flush water in the branch flow passage 31. The power generated by the generator 80 is stored in a power storage unit (e.g., a capacitor) not shown, and is supplied from the power storage unit to various electrical devices such as the solenoid valve 70 and the human body detection sensor 200. The generator 80 is one example of a power generation unit.

[0045] The vacuum breaker 90 is connected to the water supply line 30 downstream of the generator 80 and the solenoid valve 70. The water discharge unit 20 is connected to the downstream side of the vacuum breaker 90. In other words, the vacuum breaker 90 is provided in the water supply line 30 to the water discharge unit 20. The vacuum breaker 90 prevents backflow of sewage from the water discharge unit 20.

[0046] Here, the configuration of the vacuum breaker 90 will be described with reference to Fig. 6. Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 4, and is a diagram for explaining the vacuum breaker 90 and the like.

[0047] As shown in FIG. 6, the vacuum breaker 90 includes a water passage 91, an air inlet 92, a valve body 93, and a water receiving portion 94.

[0048] Water passage 91 has a water inlet 91a on the upstream side (the side of solenoid valve 70 (see Figure 5) of water supply passage 30) and a water outlet 91b on the downstream side (the side of water outlet 20). Water inlet 91a opens in the vertical direction (up and down), and water outlet 91b opens forward (more precisely, forward and downward). Air introduction port 92 is an opening that connects water passage 91 to the outside, is provided above water inlet 91a, and opens vertically.

[0049] Valve element 93 is provided in water passage 91, and moves (moves up and down) in the vertical direction within water passage 91 due to the water pressure of wash water. When water is passing through (see arrow A), valve element 93 rises due to the water pressure, connecting water inlet 91a and water outlet 91b.

[0050] As shown by the dashed line, when water is not passing through, the valve body 93 descends under its own weight to close the water inlet 91a and connect the water passage 91 to the air inlet 92. If negative pressure occurs in the water supply passage 30 for some reason, the valve body 93 is pulled downward by the negative pressure to close the water inlet 91a. This allows the vacuum breaker 90 to prevent the backflow of sewage from the water discharge section 20.

[0051] The water receiving portion 94 is provided above the atmospheric air inlet 92. The water receiving portion 94 is in communication with the atmospheric air inlet 92, and receives the cleaning water that overflows from the atmospheric air inlet 92. The cleaning water collected by the water receiving portion 94 may be discharged from the atmospheric air inlet 92 or from a discharge port 94d provided in the water receiving portion 94, which will be described later.

[0052] A water discharge section (spreader) 22 is connected to the downstream side of the vacuum breaker 90. The water discharge section 20 is attached and fixed to the bowl section 3 (see FIG. 1).

[0053] The water discharge section 20 includes a first water inlet 21a, a first water discharge hole 22a, and a first communication passage 23a. A water outlet 91b of the water passage 91 is connected to the first water inlet 21a. The first water discharge hole 22a is an opening that opens toward the bowl surface 4 of the bowl section 3. The first communication passage 23a is a flow path that communicates the first water inlet 21a and the first water discharge hole 22a. Therefore, when flush water flows into the first water inlet 21a from the water outlet 91b of the water passage 91, the flush water that has flowed in is discharged from the first water discharge hole 22a to the bowl surface 4 via the first communication passage 23a, and washes the bowl surface 4. In this way, the first water discharge hole 22a discharges flush water supplied from the water supply passage 30 into the bowl section 3. The water discharger 20 has a separate flow path different from the flow path through which flush water flows from the water supply path 30 (water passage 91), but this will be described later.

[0054] The vacuum breaker 90 configured as described above is disposed near the upper portion of the storage section 6. In other words, the vacuum breaker 90 is disposed at a position above the devices constituting the functional section 10. For example, as shown in FIG. 4, the vacuum breaker 90 is disposed above the diaphragm 60.

[0055] As a result, the vacuum breaker 90 is disposed in a position in the storage section 6 that is easily accessible from above, allowing an operator to easily perform maintenance on the vacuum breaker 90. In other words, by disposing the vacuum breaker 90 above the diaphragm 60, it is possible to improve the maintainability of the vacuum breaker 90, which requires relatively frequent maintenance.

[0056] Moreover, the vacuum breaker 90 is disposed above not only the diaphragm 60 but also the stop valve 40, the constant flow valve 50 (not visible in FIG. 4) which is disposed at the same height as the stop valve 40, the solenoid valve 70, the generator 80, etc. In other words, and more specifically, the vacuum breaker 90 is disposed at a position which is the uppermost with respect to the devices which constitute the functional unit 10.

[0057] This allows the vacuum breaker 90 to be disposed in a position that is easily accessible from above in the storage section 6, for example, and the maintainability of the vacuum breaker 90 can be improved.

[0058] As described above, the vacuum breaker 90 is a type of vacuum breaker in which the valve body 93 operates vertically in the water passage 91 by the water pressure of the cleaning water. That is, since the vacuum breaker 90 is configured so that cleaning water is supplied from below, it is possible to place the vacuum breaker 90 in a position above the devices that make up the functional section 10.

[0059] This allows the vacuum breaker 90 to be disposed at a position in the storage section 6 that is easier to access from above, for example, and the maintainability of the vacuum breaker 90 can be further improved.

[0060] The type of the vacuum breaker 90 is not limited to the above, and other types such as a flapper type may be used.

[0061] As shown in FIG. 5, upstream of the vacuum breaker 90, a generator 80, a solenoid valve, a diaphragm 60, a constant flow valve 50, a stop valve 40, and the like are provided.

[0062] In this way, by providing the generator 80 or the like upstream of the vacuum breaker 90, backflow of sewage from the water discharge section 20 to the generator 80 or the like can be prevented.

[0063] Next, we will explain the fixing of the vacuum breaker 90. As shown in Fig. 6, the vacuum breaker 90 is fixed to the water discharger 20. In other words, the vacuum breaker 90 is fixed directly to the water discharger 20, and is not fixed to the bottom 6a or front wall 6b (see Fig. 2) of the storage section 6, or the like.

[0064] A specific fixing method will be described with reference to Fig. 7. Fig. 7 is a diagram for explaining a method for fixing the vacuum breaker 90 to the water discharger 20. Fig. 7 is a top view of the water discharger 20, and only the water passage 91 portion of the vacuum breaker 90 is shown.

[0065] As shown in Figures 6 and 7, the vacuum breaker 90 and the water discharge unit 20 are fixed by a fixing bracket 300 at the water outlet 91b of the water passage 91 of the vacuum breaker 90 and at the first water inlet 21a of the water discharge unit 20. A ring-shaped retaining ring can be used as the fixing bracket 300. For ease of understanding, Figure 7 shows the retaining ring, which is the fixing bracket 300, in an open state (unfixed state).

[0066] The vacuum breaker 90 and the water discharge section 20 are fixed to each other by a fixing bracket 300 while locked together. Specifically, in the water discharge section 20, a convex portion 25 that protrudes toward the water passage 91 of the vacuum breaker 90 is formed on the outer peripheral surface 21a1 of the first water inlet 21a. In the water passage 91 of the vacuum breaker 90, a concave portion 95 with which the convex portion 25 can be locked (fitted) is formed on the outer peripheral surface 91b1 of the water outlet 91b.

[0067] The above-mentioned convex portion 25 and concave portion 95 are engaged, so that the vacuum breaker 90 is engaged with the water discharge portion 20. This prevents the water passage 91 of the vacuum breaker 90 from rotating in the circumferential direction relative to the water discharge portion 20. With the rotation of the vacuum breaker 90 restricted, the fixing bracket 300 is tightened so as to sandwich the vicinity of the convex portion 25 and the concave portion 95, so that the vacuum breaker 90 is fixed to the water discharge portion 20.

[0068] In this way, by fixing the vacuum breaker 90 to the water outlet 20, the relative positional relationship between the vacuum breaker 90 and the water outlet 20 can be prevented from changing due to the water force during flushing, and the vacuum breaker 90 can ensure the desired performance.

[0069] That is, for example, if the vacuum breaker 90 is fixed to a location other than the water discharge portion 20, the relative position of the vacuum breaker 90 to the water discharge portion 20 may change due to the water force during flushing, and the vacuum breaker 90 may tilt relative to the water discharge portion 20. In such a case, the valve body 93 of the vacuum breaker 90 may have difficulty moving vertically, and the expected performance may not be ensured.

[0070] Therefore, by fixing the vacuum breaker 90 to the water discharge portion 20, it is possible to prevent the vacuum breaker 90 from changing its relative positional relationship with the water discharge portion 20. This makes it possible to prevent the valve body 93 from becoming difficult to operate, and the vacuum breaker 90 can ensure its desired performance.

[0071] Next, the water receiving portion 94 of the vacuum breaker 90 and the separate flow path provided in the water discharger 20 will be described with reference to Fig. 6, Fig. 8 and Fig. 9. Fig. 8 is a top view of the water receiving portion 94. Fig. 9 is an end view taken along line IX-IX in Fig. 8.

[0072] As shown in Fig. 6, the water receiving portion 94 is formed in a box shape and includes a main body portion 94a and a lid portion 94b. Figures 8 and 9 show a state in which the lid portion 94b is removed.

[0073] As shown in Figures 8 and 9, the main body 94a includes a bottom surface 94a1 and a side wall 94a2. The side wall 94a2 is a wall formed to rise upward from the peripheral edge of the bottom surface 94a1. The lid 94b (see Figure 6) is attached to the upper part of the main body 94a. As a result, in the water receiving part 94, a space surrounded by the bottom surface 94a1, the side wall 94a2, and the lid 94b is formed, and the cleaning water overflowing from the air inlet 92 is collected in this space.

[0074] The bottom surface portion 94a1 includes an inlet outlet 94c, an outlet 94d, and a wall portion 94e. The inlet outlet 94c is formed to communicate with the above-mentioned atmosphere inlet 92. Therefore, the washing water that overflows from the atmosphere inlet 92 flows in from the inlet outlet 94c, and the bottom surface portion 94a1 receives the inflowing washing water.

[0075] The discharge port 94d is formed at a position spaced apart from the inlet / outlet 94c. The discharge port 94d discharges the wash water received in the water receiving portion 94. The wall portion 94e is formed so as to surround the discharge port 94d. In other words, the wall portion 94e is formed so as to extend upward from a portion of the bottom surface portion 94a1 surrounding the discharge port 94d. The height of the upper end of the wall portion 94e is set to be lower than the height of the side wall portion 94a2.

[0076] Therefore, the outlet 94d discharges the wash water that has passed over the wall portion 94e, out of the wash water received in the water receiving portion 94. In other words, when the wash water collected by the water receiving portion 94 exceeds a predetermined amount by passing over the wall portion 94e, the outlet 94d discharges the wash water that has passed over the wall portion 94e.

[0077] In addition, when the cleaning water collected by the water receiving portion 94 does not exceed the wall portion 94e and the inflow of cleaning water from the atmospheric inlet 92 stops, the collected cleaning water flows out from the inlet outlet 94c through the atmospheric inlet 92 into the water passage 91, and is drained from the water passage 91 through the water outlet portion 20.

[0078] In this way, in the water receiving portion 94, the discharge path for the cleaning water collected by the water receiving portion 94 can be divided into two paths: one through the discharge port 94d and one through the atmospheric inlet port 92, so that the collected cleaning water can be discharged quickly.

[0079] In addition, since a wall portion 94e is provided around the discharge port 94d, the cleaning water that is collected and does not exceed the wall portion 94e is discharged from the air inlet port 92. Since the air inlet port 92 has a relatively large opening diameter, the collected cleaning water can be discharged quickly.

[0080] 8 and 9, the bottom surface portion 94a1 is formed to have a downward slope toward the atmosphere inlet port 92. This allows the cleaning water collected in the water receiving portion 94 to easily flow toward the atmosphere inlet port 92, and therefore the cleaning water can be discharged from the atmosphere inlet port 92 quickly.

[0081] Here, the water discharger 20 will be described with reference to FIG. 6. The water discharger 20 includes a second water inlet 21b, a second water discharge hole 22b, and a second communication passage 23b.

[0082] The second water inlet 21b is connected to the discharge port 94d of the water receiving portion 94 via a connecting pipe 96. The second water discharge hole 22b is an opening that opens toward the bowl surface 4 (see FIG. 1) of the bowl portion 3. The second communication passage 23b is a flow path that communicates the second water inlet 21b and the second water discharge hole 22b. Therefore, when flush water discharged from the discharge port 94d flows into the second water inlet 21b via the connecting pipe 96, the flowing flush water is discharged from the second water discharge hole 22b via the second communication passage 23b to the bowl surface 4. In this way, the second water discharge hole 22b discharges flush water supplied from the water receiving portion 94 via the discharge port 94d into the bowl portion 3.

[0083] Thus, the water discharge section 20 is provided with, in addition to the first water discharge hole 22a that discharges flush water supplied from the water supply passage 30, the second water discharge hole 22b that discharges flush water supplied (discharged) from the water receiving section 94 via the discharge port 94d into the bowl section 3. This allows flush water discharged from the discharge port 94d of the water receiving section 94 to be reliably discharged to the bowl section 3 side.

[0084] In other words, for example, if the cleaning water discharged from the outlet 94d of the water receiving portion 94 is connected to the first water discharge hole 22a, the first water discharge hole 22a will carry cleaning water with a water force sufficient to clean the bowl portion 3, and the cleaning water may be pushed by that water force, making it difficult to discharge from the outlet 94d.

[0085] Therefore, by providing the second water discharge hole 22b in addition to the first water discharge hole 22a in the water discharge section 20, the cleaning water discharged from the outlet 94d of the water receiving section 94 can be reliably discharged to the bowl section 3 side.

[0086] Furthermore, in the water discharge section 20, the second water discharge hole 22b is provided above the first water discharge hole 22a. This allows the distance between the second water discharge hole 22b and the water receiving section 94 located above the second water discharge hole 22b to be closer than when the second water discharge hole 22b is provided below or to the side of the first water discharge hole 22a. This allows the length of the connecting pipe 96 connecting the second water discharge hole 22b and the water receiving section 94 to be shortened, making it easier to handle the connecting pipe 96.

[0087] As described above, the urinal 1 according to the embodiment includes a bowl section 3, a water discharge section 20, a functional section 10, and a storage section 6. The bowl section 3 receives urine. The water discharge section 20 discharges flushing water into the bowl section 3. The functional section 10 supplies flushing water to the water discharge section 20. The storage section 6 is formed on the upper rear side of the bowl section 3 and stores the functional section 10. The functional section 10 includes a vacuum breaker 90 that is provided in the water supply passage 30 to the water discharge section 20 and prevents backflow of sewage from the water discharge section 20, and a diaphragm 60 that is provided upstream of the vacuum breaker 90 and switches between a water stop state that closes the water supply passage 30 and a water supply state that opens the water supply passage 30. The vacuum breaker 90 is disposed above the diaphragm 60. This improves the ease of maintenance of the vacuum breaker 90.

[0088] <Additional Notes> (1) A bowl portion for receiving urine; A water discharge portion that discharges wash water into the bowl portion; A functional section for supplying flush water to the water discharge section; a storage section formed on an upper rear side of the bowl section and configured to store the functional section; Equipped with The functional unit includes: A vacuum breaker provided in a water supply passage to the water discharge portion to prevent backflow of wastewater from the water discharge portion; a diaphragm provided upstream of the vacuum breaker and configured to switch between a water stop state for closing the water supply passage and a water supply state for opening the water supply passage; Including, The vacuum breaker is disposed above the diaphragm. A urinal characterized by: (2) The functional unit includes: A power generation section that is provided upstream of the vacuum breaker and generates power using the flow of cleaning water in the water supply passage. The urinal according to (1), further comprising: (3) The vacuum breaker is fixed to the water discharge portion. A urinal as described in (1) or (2). (4) The vacuum breaker comprises: A waterway having an inlet on the upstream side and an outlet on the downstream side; An air inlet port that communicates the water passage with the outside; a valve body that is provided in the water passage and moves in a vertical direction by the water pressure of the wash water to communicate between the water inlet and the water outlet when water is passing through and to communicate between the water passage and the air inlet when water is not passing through; The urinal according to any one of (1) to (3) above, further comprising: (5) The vacuum breaker comprises: A water receiving section for receiving washing water overflowing from the air inlet Further equipped with The water receiving portion is A drain outlet for discharging the received cleaning water; A wall portion formed to surround the drain outlet; A urinal as described in (4) above, characterized in that it comprises: (6) The water receiving portion is The bottom surface portion for receiving the cleaning water is formed so as to slope downward toward the air inlet. A urinal as described in (5) above. (7) The water discharge portion is A first water discharge hole that discharges flush water supplied from the water supply passage into the bowl portion; a second water discharge hole that discharges flush water supplied from the water receiving portion through the drain outlet into the bowl portion; A urinal as described in (5) or (6) above, characterized in that it comprises: (8) The second water discharge hole is provided above the first water discharge hole. A urinal as described in (7) above. [Explanation of symbols]

[0089] 1 urinal 3 Bowl section 6 Storage area 10 Functional Part 20 Water outlet 90 Vacuum Breaker 60 Diaphragm

Claims

1. A bowl portion for receiving urine; A water discharge portion that discharges wash water into the bowl portion; A functional section for supplying flush water to the water discharge section; a storage section formed on an upper rear side of the bowl section and configured to store the functional section; Equipped with The functional unit includes: A vacuum breaker provided in a water supply passage to the water discharge portion to prevent backflow of wastewater from the water discharge portion; a diaphragm provided upstream of the vacuum breaker and configured to switch between a water stop state for closing the water supply passage and a water supply state for opening the water supply passage; Including, The vacuum breaker is disposed above the diaphragm and is fixed to the water discharge portion. A urinal characterized by:

2. The functional unit includes: A power generation section that is provided upstream of the vacuum breaker and generates power using the flow of cleaning water in the water supply passage.

2. The urinal of claim 1, further comprising:

3. The vacuum breaker comprises: A waterway having an inlet on the upstream side and an outlet on the downstream side; An air inlet port that communicates the water passage with the outside; a valve body that is provided in the water passage and moves in a vertical direction by the water pressure of the wash water to communicate between the water inlet and the water outlet when water is passing through and to communicate between the water passage and the air inlet when water is not passing through; 2. A urinal as claimed in claim 1, further comprising:

4. The vacuum breaker comprises: A water receiving section for receiving washing water overflowing from the air inlet Further equipped with The water receiving portion is A drain outlet for discharging the received cleaning water; A wall portion formed to surround the drain outlet; 4. A urinal as claimed in claim 3, further comprising:

5. The water receiving portion is The bottom surface portion for receiving the cleaning water is formed so as to slope downward toward the air inlet.

5. A urinal according to claim 4.

6. The water discharge portion is a first water discharge hole that discharges flush water supplied from the water supply passage into the bowl portion; a second water discharge hole that discharges flush water supplied from the water receiving portion through the drain outlet into the bowl portion; 5. A urinal as claimed in claim 4, further comprising:

7. The second water discharge hole is provided above the first water discharge hole. A urinal according to claim 6.

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