JP7478611B2 - Water outlets and urinals - Google Patents

Description

This disclosure relates to water outlets and urinals.

Patent Document 1 discloses a conventional spreader. This spreader has a discharge port, a flushing water passage, and a supply port. When the spreader is fixed to the urinal, the discharge port opens downward. The supply port is connected to a water supply pipe via an elbow. The flushing water passage is a passage that leads from the supply port to the discharge port.

Japanese Patent Application Laid-Open No. 7-189329

In a spreader such as that in Patent Document 1, after the urinal is flushed, the remaining water in the flush water passage turns into droplets and flows down to the water outlet. In this spreader, the position of the outlet relative to the toilet bowl surface is far enough away that it is a distance greater than the front-to-back width of the outlet. As a result, these droplets are not guided from the outlet to the toilet bowl surface, and instead drip directly downward from the outlet (dripping phenomenon).

This disclosure has been made in consideration of the above-mentioned conventional situation, and aims to solve the problem of providing a water spout and a urinal that suppresses the dripping of water from the water spout.

The first water discharge device of the present disclosure is a water discharge device that is attached to a toilet bowl and discharges cleaning water to clean the toilet bowl surface, and has a water discharge port that opens so as to discharge cleaning water toward the toilet bowl surface, a rear wall that constitutes the wall of the water discharge port on the toilet bowl surface side, and a guide part that protrudes forward from the rear wall and extends in the vertical direction, and the distance between the bottom end of the rear wall and the toilet bowl surface is smaller than the radius of a water droplet.

The second water discharge device of the present disclosure is a water discharge device that is attached to a toilet bowl and discharges cleaning water to clean the toilet bowl surface, and has a water discharge port that opens so as to discharge cleaning water toward the toilet bowl surface, a rear wall that constitutes the wall of the water discharge port facing the toilet bowl surface, and a guide part that protrudes forward from the rear wall and extends in the vertical direction, and the distance between the bottom end of the rear wall and the toilet bowl surface is smaller than the front-to-rear width of the opening area of the water discharge port.

The third water discharge device of the present disclosure is a water discharge device that is attached to a toilet bowl and discharges cleaning water to clean the surface of the toilet bowl, and has a portion that collects water droplets provided on the opening edge of the water discharge port.

FIG. 1 is a perspective view showing a urinal of a first embodiment. FIG. 2 is a left-right central cross-sectional view showing the urinal of the first embodiment. FIG. 2 is a perspective view of the spreader of the first embodiment as viewed from diagonally forward right. 3 is a cross-sectional view showing the spreader of the first embodiment, which corresponds to the cross section taken along line AA in FIG. 2. 5 is a cross-sectional view of the spreader of the first embodiment taken along line BB of FIG. 4. 5 is a cross-sectional view of the spreader of the first embodiment taken along line CC of FIG. 4. FIG. 3 is an enlarged cross-sectional view of FIG. 2 showing a main part of the urinal of the first embodiment. FIG. 8 is a partially enlarged view of FIG. 7 for explaining the flow of water droplets. 1 is a cross-sectional view seen from the front illustrating a state in which the spreader of the first embodiment is assembled to a urinal in a tilted state. FIG.

A first embodiment of the urinal 1 of the present disclosure will be described with reference to the drawings. In the following description, up and down refer to the up and down of the urinal 1 in its installed state, left and right refer to the left and right as seen from the user's side when using the installed urinal 1, and front and back refer to the closer side as seen from the user's side when using the installed urinal 1, and the farther side as seen from the user's side when using the installed urinal 1, respectively.

<Embodiment 1>
The urinal 1 of the first embodiment includes a toilet bowl 10, a peripheral wall 30, and a spreader (water spouting device) 50, which is a water spouting device, as shown in Fig. 1 and Fig. 2. As shown in Fig. 2, the toilet bowl 10 has an upright portion 11 extending in the vertical direction, a bowl-shaped portion 13 continuing to the lower portion of the upright portion 11, and a concealed portion 15 continuing to the upper portion of the upright portion 11. The upright portion 11 forms a toilet bowl surface 10A that is curved in the left-right direction so that the left-right central portion is recessed backward in the entire up-down direction. The toilet bowl surface 10A is slightly curved in the up-down direction so that the lower portion extends vertically in the up-down direction and the upper portion forms an inclined surface that is inclined diagonally forward toward the upper side. The upright portion 11 has a through hole 11A that penetrates in the front-rear direction at the upper part of the left-right center. The upright portion 11 around the through hole 11A has the toilet bowl surface 10A and its back surface formed flat.

The bowl-shaped portion 13 is connected to the lower part of the upright portion 11 and forms the toilet bowl surface 10B, which spreads upward in a bowl shape. The bowl-shaped portion 13 protrudes forward from the upright portion 11. A drain hole 13A is formed at the lower end of the bowl-shaped portion 13. A strainer 17 is attached to the drain hole 13A from above so that it can be easily attached and detached.

As shown in Figures 1 and 2, the toilet bowl surfaces 10A, 10B formed by the vertical portion 11 and the bowl-shaped portion 13 are formed with steps extending vertically at symmetrical positions, that is, a pair of left and right flushing steps 19. The upper ends of the pair of left and right flushing steps 19 are located separately on the left and right below the spreader 50, and extend while inclining diagonally forward toward the lower front end of the bowl-shaped portion 13. The pair of left and right flushing steps 19 are formed so that flushing water discharged from the spreader 50 flows along the step surface and joins at the front end of the bowl-shaped portion 13. Therefore, in the urinal 1, flushing water discharged from the spreader 50 flows smoothly into the bowl-shaped portion 13 as well, and the toilet bowl surface 10A can be cleaned well.

As shown in FIG. 2, the concealing portion 15 is formed by a convex portion that protrudes forward from the upper end of the vertical portion 11 of the toilet bowl 10. This concealing portion 15 extends in the left-right direction over almost the entire upper end of the vertical portion 11 of the toilet bowl 10 in the left-right direction. The concealing portion 15 is continuous with the front edge of the upper wall portion 31 of the peripheral wall portion 30 described below, and its upper surface is formed flush with the upper surface 31A of the upper wall portion 31. When viewed from above, this concealing portion 15 conceals the spreader 50 described below.

As shown in Figs. 1 and 2, the peripheral wall portion 30 is continuous with the outer peripheral edge of the toilet bowl 10, and has an upper wall portion 31, left and right wall portions 33, and a lower wall portion 35. As shown in Fig. 2, the upper wall portion 31 is plate-shaped, continuous with the upper edge of the toilet bowl 10, and is provided above the toilet bowl 10. The upper wall portion 31 widens above the toilet bowl 10 and is inclined diagonally downward toward the front. Therefore, the upper surface 31A of the upper wall portion 31 is inclined diagonally downward toward the front. As described above, the upper surface of the concealment portion 15 is formed flush with the upper surface 31A of the upper wall portion 31 and is inclined diagonally downward toward the front at the same angle as the upper surface 31A of the upper wall portion 31.

The spreader 50 is attached to the toilet bowl 10 as shown in Figs. 1 and 2. When attached to the toilet bowl 10, the spreader 50 is exposed forward in a disk shape. The spreader 50 is attached to the toilet bowl 10 so that the water outlet 70 described below faces downward. The spreader 50 spouts cleaning water for cleaning the toilet bowl surfaces 10A and 10B from the water outlet 70. The spreader 50 is attached to the upper part of the vertical surface portion 11 of the toilet bowl 10 at the center of the left and right. The spreader 50 spouts cleaning water so that it spreads from the central area of the toilet bowl surface 10A to the left and right ends. Below, the spreader 50 is described in the state where it is attached to the toilet bowl 10.

As shown in FIG. 7, the spreader 50 has a built-in non-contact human body sensor S. The human body sensor S is, for example, an ultrasonic sensor, and detects when a user stands in front of the urinal 1 and moves away. The spreader 50 uses an on-off valve (not shown) to start and stop the supply of water to the water supply line 65 (described below). The on-off valve is controlled based on a detection signal from the human body sensor S.

As shown in FIG. 7, the spreader 50 has a main body 51, a cover 53, and a front plate 55. In FIGS. 3, 5, and 6, the cover 53 is omitted to show the spreader 50. As shown in FIGS. 5 to 7, the main body 51 has an outer tube 61, a partition wall 63, a water supply passage 65, an electrical path 67, and a connection portion 69. The outer tube 61 is cylindrical. The outer tube 61 has a screw thread formed on its outer circumferential surface. The partition wall 63 divides the space inside the outer tube 61 into upper and lower spaces. The partition wall 63 is provided slightly below the center of the outer tube 61 in the vertical direction. The water supply passage 65 is composed of the partition wall 63 and the lower end portion of the outer tube 61. The water supply passage 65 supplies cleaning water supplied from a flow path 69A (described later) to the water outlet 70. The electrical path 67 is formed by the partition wall 63 and the upper end portion of the outer tube portion 61. The electrical path 67 houses wiring and the like connected to the human body sensor S. The connection portion 69 protrudes rearward from the rear end of the outer tube portion 61. The connection portion 69 is connected to a water supply pipe (not shown). The connection portion 69 is cylindrical. The connection portion 69 has a flow path 69A formed therein through which flush water flows. The flow path 69A supplies flush water to the water outlet 70 from the rear side via the water supply passage 65.

As shown in FIG. 7, the cover portion 53 is fitted to the tip of the outer tube portion 20. The cover portion 53 covers the electrical path 67 and the water supply path 65 from the front side. The front plate portion 55 is provided between the main body portion 51 and the cover portion 53. The front plate portion 55 covers the water supply path 65 from the front side.

As shown in FIG. 3, the spreader 50 is provided with a water outlet 70. The water outlet 70 has a rear wall 71, a pair of upper walls 77, and a front plate portion 55. The water outlet 70 is open so as to discharge flushing water toward the toilet bowl surface 10A. The water outlet 70 is configured by cutting out a slit-shaped portion of the peripheral surface of the spreader 50 attached to the toilet bowl 10 in front of the toilet bowl surface 10A.

As shown in FIG. 8, the rear wall 71 constitutes the wall on the toilet bowl surface 10A side of the water outlet 70. The rear wall 71 is a flange-shaped wall extending radially from the lower end side of the outer tube portion 61. The rear wall 71 is connected to the wall on the lower end side of the water supply passage 65 (the wall on the lower end side of the outer tube portion 61). The front surface 71A of the rear wall 71 slopes downward toward the rear. This makes it possible to prevent water droplets running down the front surface 71A of the rear wall 71 from dripping midway in the vertical direction. A packing P made of, for example, rubber is provided between the rear wall 71 and the toilet bowl surface 10A. The packing P stops water from flowing between the rear wall 71 and the toilet bowl surface 10A.

As shown in FIG. 8, the rear wall 71 has a main body wall 73 and a protruding wall 75. The main body wall 73 extends downward along the circumferential direction of the outer tube portion 61. The front surface 73A of the main body wall 73 is inclined downward toward the rear (for example, inclined at an angle of 17° or less with respect to the vertical direction). The protruding wall 75 corresponds to the "portion that collects water droplets". The protruding wall 75 is provided on the opening edge 70A of the water outlet 70. The opening edge 70A of the water outlet 70 is composed of the rear lower edge of the front plate portion 55 (edge wall portion 57) described later, the front lower edge of the main body wall 73, a part of the side surface 80C of the guide portion 80 described later, and the lower edge of a pair of upper walls 77 (see FIG. 4). As shown in FIG. 4, the opening edge 70A of the water outlet 70 is formed on the left and right sides of the guide portion 80 described later when viewed from the front-rear direction. As shown in FIG. 8, the protruding wall 75 extends downward from the rear end side of the opening edge 70A (the lower end side of the front lower edge of the main body wall 73). The protruding wall 75 is located at the lower end of the spreader 50. The protruding wall 75 protrudes downward from the lower end of the main body wall 73 at the center in the left-right direction. The protruding wall 75 has a width in the left-right direction at the upper end greater than the width in the left-right direction at the lower end. The front surface 75A of the protruding wall 75 is inclined downward toward the rear (for example, inclined at an angle of 17° or less with respect to the vertical direction). This makes it possible to prevent water droplets running down the front surface 75A of the protruding wall 75 from dripping midway in the up-down direction. The front surface 75A of the protruding wall 75 is inclined downward at a steeper angle than the front surface 73A of the main body wall 73. The lower edge of the protruding wall 75 is inclined upward toward the outside in the left-right direction. The left and right side portions of the outer edge of the protruding wall 75 are curved so as to be concave toward the center of the outer cylinder portion 61. This configuration allows water droplets running down the rear wall 71 to be collected at the lower end 75C of the protruding wall 75, causing the water droplets to grow larger. The larger water droplets then tend to adhere to the toilet bowl surface 10A at the lower end 75C of the protruding wall 75.

In FIG. 4, the spreader 50 is attached to the toilet bowl surface 10A in a state (normal state) where it is not tilted around the central axis C1 (the central axis of the outer cylinder portion 61). The normal state is a state where the central axis C1 of the spreader 50 and the central axis C2 of the flow path 69A overlap in the vertical direction. The normal state is a state where the guide portion 80 is located at the center of the left and right direction of the spreader 50. In the normal state, the protruding wall 75 overlaps the flow path 69A in the vertical direction when viewed from the front side, as shown in FIG. 9. In FIG. 9, the spreader 50 is attached to the toilet bowl surface 10A with an inclination of θ around the central axis C1. The protruding wall 75 overlaps the flow path 69A in the vertical direction with θ in the range of 0° to 15°. As shown in FIG. 9, even if the spreader 50 is attached to the toilet bowl surface 10A with an inclination of θ around the central axis C1, the water droplets flowing down the rear wall 71 can be reliably captured by the protruding wall 75. For example, water droplets flowing downward from the left and right ends of the flow path 69A adhere to the protruding wall 75 and are guided to the lower end 75C. Note that the tilt angle θ around the central axis C1 is clockwise in FIG. 9, but it can also be counterclockwise.

As shown in FIG. 8, the lower end surface of the rear wall 71 (the lower end surface 75B of the protruding wall 75) is inclined downward toward the toilet bowl surface 10A when the spreader 50 is attached to the toilet bowl 10. The lower end surface 75B of the protruding wall 75 is connected to the lower end surface 80B of the guide portion 80. The front end of the lower end surface 75B of the protruding wall 75 (excluding the guide portion 80) is a curved surface that is convex toward the front and downward. The rear end of the lower end surface 75B of the protruding wall 75 is a curved surface that is convex toward the rear and downward. This configuration makes it less likely to damage the toilet bowl surface 10A, etc., when attaching the spreader 50 to the toilet bowl 10, compared to a configuration in which the rear end of the lower end surface 75B is pointed.

As shown in Figs. 3 and 4, the water outlet 70 is provided with a guide portion 80. The guide portion 80 corresponds to the "part that collects water droplets". The guide portion 80 is arranged over the entire top and bottom of the water outlet 70, including the opening edge 70A. The guide portion 80 protrudes forward from the rear wall 71 and extends in the vertical direction. The guide portion 80 is provided in the center of the rear wall 71 in the left-right direction. The guide portion 80 extends downward from the outlet (front end) of the water supply passage 65. As shown in Figs. 5 and 6, the upper end surface 80A of the guide portion 80 is connected to the bottom wall surface 65A of the water supply passage 65 in the front-rear direction. As shown in Fig. 8, the upper end surface 80A is inclined upward toward the rear at an angle similar to that of the bottom wall surface 65A when the spreader 50 is attached to the toilet bowl 10. The guide portion 80 extends from the upper end to the lower end of the rear wall 71. The lower end surface 80B of the guide portion 80 is connected in the front-rear direction at the center in the left-right direction of the lower end surface 75B of the protruding wall 75. The lower end surface 80B slopes downward toward the rear. The left and right side surfaces 80C of the guide portion 80 slope downward toward the center in the left-right direction.

8, the guide portion 80 has an extension wall 81, protrusions 82 and 83, and a recess 84. The extension wall 81 constitutes the rear portion of the guide portion 80. The extension wall 81 is a rectangular wall that protrudes forward from the rear wall 71 and is vertically long in a side view. When viewed from the left and right, the extension wall 81 overlaps with the lower end side of the opening area AR of the water outlet 70 described below. The front-to-rear width of the extension wall 81 (the width in the direction perpendicular to the front surface 73A of the main body wall 73) is approximately the same size as the front-to-rear width of the opening area AR of the water outlet 70 (the gap between the front plate portion 55 and the main body wall 73 (width L3 described below)).

As shown in FIG. 8, the protrusion 82 protrudes forward from the front lower end of the extension wall 81. The protrusion 82 has a square cross section when viewed from the front-rear direction. The protrusion 83 protrudes forward from a position above the protrusion 82 at the front end of the extension wall 81. The protrusion 83 has a square cross section when viewed from the front-rear direction. The recess 84 is formed by the protrusions 82, 83 and the portion between the protrusions 82 and 83 at the front end of the extension wall 81. The edge wall 57 of the front plate 55, which will be described later, fits into the recess 84. The protrusion 82 is connected in the up-down direction to the lower end of the front plate 55 (the lower end of the edge wall 57).

After the water discharge is completed (after the on-off valve changes from the open state to the closed state), the remaining water in the water supply passage 65 gradually flows out of the water outlet 70 as shown in FIG. 8. The water supply passage 65 has a downwardly convex semicircular cross section when viewed from the front to back direction, so the water flows out to the water outlet 70 while gathering in the left-right center. The water droplets flowing down from the water supply passage 65 contact at least one of the left and right side surfaces 80C of the guide portion 80 and the rear wall 71 and flow downward. Since the left and right side surfaces 80C of the guide portion 80 are inclined downward toward the left-right center, the water droplets running down the side surfaces 80C are gathered in the left-right center. Since the left-right width of the protruding wall 75 becomes smaller toward the bottom, the water droplets running down the front surface 75A of the protruding wall 75 are gathered in the left-right center. By gathering the water droplets at the lower end 71B of the rear wall 71, the size of the water droplets increases, making it easier for them to come into contact with the toilet bowl surface 10A. This makes it easier for water droplets to be guided to the toilet bowl surface 10A.

As shown in FIG. 4, the pair of upper walls 77 form the upper left and right ends of the water outlet 70. The upper walls 77 rise forward from the upper left and right ends of the rear wall 71. The lower surfaces of the pair of upper walls 77 are each inclined downward toward the outside in the left and right directions.

As shown in FIG. 3, the front plate portion 55 constitutes the front end side of the water outlet 70. The front plate portion 55 is semicircular. As shown in FIG. 7, the front plate portion 55 is disposed in front of the water supply passage 65. The front plate portion 55 causes the cleaning water supplied from the water supply passage 65 to collide with itself and spread out to the left and right. As shown in FIG. 3, the front plate portion 55 has a plate portion 56 and an edge wall portion 57. The plate portion 56 is semicircular. As shown in FIG. 5 and FIG. 6, the edge wall portion 57 rises rearward from the edge of the lower end of the plate portion 56. The front plate portion 55 is connected to the rear wall 71 in the front-rear direction via the extension wall 81 of the guide portion 80 by fitting the edge wall portion 57 into the recess 84. With this configuration, compared to a configuration in which there is a gap between the guide portion 80 and the front plate portion 55, it is possible to suppress the attraction of water droplets to the front end of the guide portion 80 by surface tension. In other words, water droplets running down the left and right side surfaces 80C of the guide portion 80 can be easily attracted to the rear wall 71 by surface tension. The rear surface of the front plate portion 55 is parallel to the front surface 71A of the rear wall 71, as shown in FIG. 8.

8, when the spreader 50 is attached to the toilet bowl 10, the distance L1 between the lower end 71B of the rear wall 71 and the toilet bowl surface 10A is smaller than the radius L2 of the water droplet. The lower end 71B of the rear wall 71 is the lower end 75C of the protruding wall 75. The lower end 75C is the lowest part of the protruding wall 75. The lower end 75C is closer to the toilet bowl surface 10A on the lower end surface 75B of the protruding wall 75. The distance L1 is, for example, the distance along the horizontal direction between the center of the water droplet (the center of the straight line extending vertically downward from the lower end 75C of the protruding wall 75) when there is a water droplet on the lower end 75C of the protruding wall 75 and the toilet bowl surface 10A. The distance L1 is, for example, 2 mm or less. The radius L2 of the water droplet is, for example, the radius of the water droplet that is large enough to flow downward by its own weight when it adheres to the rear wall 71. The radius L2 of the water droplet is, for example, greater than 2 mm and less than 3 mm. When water droplets gather at the bottom end 75C of the protruding wall 75 to form a single droplet, the radius L2 of this droplet becomes greater than 2 mm. When the water droplet reaches the bottom end 75C of the protruding wall 75, the distance L1 between the bottom end 71B of the rear wall 71 and the toilet bowl surface 10A is smaller than the radius L2 of the water droplet, so the water droplet will reliably come into contact with the toilet bowl surface 10A. This makes it easier for the water droplet to be guided to the toilet bowl surface 10A.

As shown in FIG. 8, when the spreader 50 is attached to the toilet bowl 10, the distance L1 between the lower end 71B of the rear wall 71 (the lower end 75C of the protruding wall 75) and the toilet bowl surface 10A is smaller than the width L3 in the front-rear direction of the opening area AR of the water outlet 70. The opening area AR of the water outlet 70 is the area surrounded by the opening edge 70A. The opening area AR of the water outlet 70 is, for example, the area sandwiched between the rear lower edge of the front plate portion 55 (edge wall portion 57) and the front lower edge of the main body wall 73 of the rear wall 71. As shown in FIG. 4, the opening area AR is formed on the left and right sides of the guide portion 80 when viewed from the front-rear direction. The opening area AR is arc-shaped when viewed from the front-rear direction. The width L3 in the front-rear direction of the opening area AR is the distance of the narrowest part between the front plate portion 55 and the rear wall 71. That is, it is the distance between the rear end of the edge wall portion 57 of the front plate portion 55 and the main wall 73 of the rear wall 71. The distance L1 between the lower end 75C of the protruding wall 75 and the toilet bowl surface 10A is, for example, 2 mm or less. The width L3 is, for example, greater than 2 mm and less than 6 mm. When water droplets reach the lower end 75C of the protruding wall 75, the distance L1 between the lower end 71B of the rear wall 71 and the toilet bowl surface 10A is smaller than the front-to-rear width L3 of the opening area AR of the spout 70, so that the water droplets are more likely to come into contact with the toilet bowl surface 10A. Therefore, the water droplets are more likely to be guided to the toilet bowl surface 10A.

The embodiment configured as above provides the following advantages:

The urinal 1 of the present disclosure allows the remaining water droplets in the spreader 50 after water discharge has finished to come into contact with the guide portion 80 and be guided downward. This allows the remaining water droplets to be collected at the lower end 71B of the rear wall 71. Furthermore, because the distance L1 between the lower end 71B of the rear wall 71 and the toilet bowl surface 10A is smaller than the radius L2 of the water droplets, the water droplets that have flowed down to the lower end 71B of the rear wall 71 are more likely to come into contact with the toilet bowl surface 10A. This makes it easier for the water droplets to be guided to the toilet bowl surface 10A, and makes it possible to suppress direct dripping from the spreader 50.

In the spreader 50 of the present disclosure, the distance between the lower end 71B of the rear wall 71 and the toilet bowl surface 10A is smaller than the front-to-rear width L3 of the opening area AR of the spout 70, so water droplets that flow down to the lower end 71B of the rear wall 71 are more likely to come into contact with the toilet bowl surface 10A. This makes it easier for water droplets to be guided to the toilet bowl surface 10A, and makes it possible to prevent water droplets from dripping directly from the spreader 50.

The urinal 1 of the present disclosure can collect droplets of water remaining in the spreader 50 after water discharge has stopped by using the guide portion 80 and the protruding wall 75. As the droplets collect, they become larger in size, making them more likely to come into contact with the toilet bowl surface 10A. This makes it easier for the droplets to be guided to the toilet bowl surface 10A, and can prevent them from dripping directly from the spreader 50.

In the spreader 50 of the present disclosure, the guide portion 80 and the protruding wall 75 are provided at the bottom end. This allows the guide portion 80 and the protruding wall 75 to collect the droplets of water remaining in the spreader 50 after water discharge has finished at the bottom end of the spreader 50. This makes it even easier for the droplets to be guided by the toilet bowl surface 10A.

The spreader 50 of the present disclosure has a rear wall 71 that constitutes the wall on the toilet bowl surface 10A side of the water outlet 70. This allows the water droplets collected by the guide portion 80 and the protruding wall 75 to be guided to the toilet bowl surface 10A via the rear wall 71. In this way, by guiding the water droplets via the rear wall 71 close to the toilet bowl surface 10A, it becomes easier to guide the water droplets to the toilet bowl surface 10A.

In the spreader 50 of the present disclosure, the rear wall 71 is provided with a protruding wall 75 that protrudes downward and has a width in the left-right direction at its upper end that is greater than the width in the left-right direction at its lower end. With this configuration, water droplets that flow down to the upper end of the protruding wall 75 can be collected toward the center in the left-right direction toward the lower end of the protruding wall 75.

The spreader 50 of the present disclosure is equipped with a flow path 69A that supplies flushing water from the rear side to the water outlet 70. When the spreader 50 is attached to the toilet bowl 10 tilted 0° to 15° from the normal position around the central axis C1 along the front-to-rear direction, the protruding wall 75 overlaps with the flow path 69A in the vertical direction when viewed from the front. With this configuration, even if the spreader 50 is attached tilted on the toilet bowl surface 10A, the protruding wall 75 can reliably capture water droplets flowing down the rear wall 71.

In the spreader 50 of the present disclosure, the lower end surface of the rear wall 71 (the lower end surface 75B of the protruding wall 75) is inclined downward toward the toilet bowl surface 10A. This configuration makes it easier to guide water droplets that reach the lower end surface 75B of the protruding wall 75 toward the toilet bowl surface 10A.

In the spreader 50 of the present disclosure, the front end of the lower end surface of the rear wall 71 (the lower end surface 75B of the protruding wall 75) is a curved surface. This configuration makes it easier to guide water droplets flowing down the rear wall 71 to the lowest point of the lower end surface 75B of the protruding wall 75.

The urinal 1 of the present disclosure is capable of collecting droplets of water remaining in the spreader 50 after water discharge has stopped at the bottom end of the spreader 50 by the guide portion 80. As the droplets collect, they become larger in size, making them more likely to come into contact with the toilet bowl surface 10A. This makes it easier for the droplets to be guided to the toilet bowl surface 10A, and makes it possible to prevent them from dripping directly from the spreader 50.

The present disclosure is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments are also included within the technical scope.
(1) In the first embodiment, the guide portion 80 may not be provided. In the first embodiment, the protruding wall 75 may not be provided. That is, a guide may be provided from the upper end to the lower end of the main body wall 73 of the rear wall 71.
(2) In the first embodiment, the guide portion 80 is connected to the front plate portion 55. The front end of the guide may be separated from the front plate portion 55. In other words, the guide may extend from the rear wall 71 to a position partway in the front-to-rear direction in the opening area AR of the spout 70.
(3) In the first embodiment, both left and right side portions of the outer edge of the protruding wall 75 are curved. However, as long as the width in the left-right direction decreases toward the bottom, the outer edge may be linear or stepped.
(4) In the first embodiment, the packing P need not be provided so long as the relationship between L1, L2, and L3 is maintained as described above.
(5) In the first embodiment, the protruding wall 75 may be configured as a separate member from the main body wall 73 (for example, a rubber packing).

1...urinal, 10...toilet bowl, 10A...toilet bowl surface, 50...spreader (water outlet), 69A...flow path, 70...water outlet, 70A...opening edge, 71...back wall, 71B...bottom end, 75...protruding wall (part that collects water droplets), 75B...bottom end surface, 75C...bottom end, 80...guide part (part that collects water droplets), AR...opening area, central axis...C1

Claims (8)

A water spouting device that is attached to a toilet bowl and spouts water to clean the toilet bowl surface,
A water outlet is provided for discharging flush water toward the toilet bowl surface,
The water outlet has a portion for collecting water droplets,
The water droplet collecting portion is provided at the lower end,
a rear wall that constitutes a wall of the water outlet on the toilet bowl side,
The rear wall includes a protruding wall that protrudes downward and has a width in the left-right direction at an upper end that is larger than a width in the left-right direction at a lower end,
The portion that collects the water droplets is the protruding wall . A flow path is provided for supplying flush water from the rear side to the water outlet,
The water-discharge device as described in claim 1, wherein the protruding wall overlaps with the flow path in the vertical direction when viewed from the front when the water-discharge device is attached to the toilet bowl at an angle of 0° to 15° from the normal state around a central axis along the front-to-rear direction. 3. The water spouting device according to claim 1, wherein a lower end surface of the rear wall is inclined downward toward the surface of the toilet bowl. The water spouting device according to any one of claims 1 to 3 , wherein a front end of the lower end surface of the rear wall is a curved surface. 5. The water spouting device according to claim 1 , wherein the portion that collects the water droplets is a guide portion that protrudes forward from the rear wall and extends in the vertical direction. 6. The water spouting device according to claim 1 , wherein the distance between the lower end of the rear wall and the surface of the toilet bowl is smaller than the radius of a water droplet. 7. The water spouting device according to claim 1 , wherein the distance between the lower end of the rear wall and the surface of the toilet bowl is smaller than the front-to-rear width of an opening area of the water spout . The toilet bowl;
The water spouting device according to any one of claims 1 to 7 ,
A urinal equipped with:

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