JP6618031B2 - urinal - Google Patents

Description

  The present invention relates to a urinal, and more particularly to a urinal having an eye plate.

  A conventional urinal is provided with a detachable eye plate at the drain outlet for the purpose of preventing intrusion of off-flavors, pests and the like from the drain pipe.

  In addition, when the urine collides with the bowl surface of the urinal, the back of the bowl surface of the urinal is lowered from above to prevent the urine from bouncing off the bowl surface and scattering outside the urinal. A curved surface that is slanted toward the rear and is smoothly continuous as a whole is disclosed (see Patent Document 1).

JP 2014-218800 A

  However, in the case of a bowl surface-shaped urinal as in Patent Document 1, the wash water supplied to the bowl surface from the water discharge portion provided above the urinal body is the eye plate installed in the lower region of the bowl surface. Speeds up when flowing into the. Also, since the bowl surface of the urinal is inclined in a curved shape in the left-right direction, when the wash water supplied from the water discharge part to the bowl surface flows into the eye plate, the flow flows in the center part in the left-right direction of the bowl surface. concentrate.

  As a result, the washing water does not spread over the entire eye plate, and an unwashed region in which urine and bacteria adhering to the surface of the eye plate cannot be sufficiently washed out may occur.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to suppress the generation of a non-washing region by spreading the flow of washing water over the entire eye plate.

To achieve the above object, according to the urinal of one aspect of the present invention, a bowl surface including a back surface portion and a bottom surface portion formed continuously below the back surface portion, and drainage formed on the bottom surface portion. A urinal having a mouth, a mouth plate that covers the drain port from above, and a water discharge portion that discharges wash water from above the bowl surface, The upper inclined surface has an upward inclined surface that is inclined upward in the forward direction . The upward inclined surface extends in the left-right direction, and is highest at the rear than the center in the front-rear direction on the upper surface of the eye plate .

  In the present invention configured as described above, when the wash water discharged from the water discharge portion flows into the eye plate installed on the bottom portion of the bowl surface, even if the speed of the wash water is high and the flow is biased, The cleaning water collides with the upper inclined surface provided at the rear part of the upper surface of the eye plate, the speed of the cleaning water becomes weak, and the cleaning water temporarily stays on the upper inclined surface and then flows forward from the upper inclined surface. Therefore, the flow of washing water can be spread over the entire eye plate.

  In the urinal according to one embodiment of the present invention, the upper inclined surface may have a ridge line extending in the front-rear direction.

  In the present invention configured as described above, the washing water that has flowed from the back surface portion of the bowl surface into the eye plate in a state where the flow is biased can be made to flow to the left and right on the upper inclined surface. Thereby, the flow of washing water can be more spread over the whole eye plate. Further, even when the user urinates, even if the urine collides directly with the upper inclined surface, the urine that extends in the front-rear direction has a ridgeline, so the rebound of the collided urine is distributed to the left and right rear in the bowl surface. And urine splashing to the outside of the urinal can be suppressed.

  Moreover, the urinal which concerns on 1 aspect of this invention WHEREIN: The upper surface of an eye plate may incline and descend each right and left centering on the vertical axis | shaft which extends in the front-back direction and divides the eye plate into right and left.

  In the present invention configured as described above, even when the washing water flowing through the eye plate flows forward from the upper inclined surface, the flow of the washing water is widened to the left and right even if the flow is biased toward the center. Thus, the flow of washing water can be spread over the entire eye plate.

  In the urinal according to one aspect of the present invention, the back surface portion may be formed in a curved surface shape by inclining backward from above to below.

  In the present invention configured as described above, the bowl surface is inclined downward from above to form a curved surface, so that the speed of the washing water flowing into the eye plate is high and the flow is in the center. Although it becomes easy to concentrate, the flow of washing water can be spread over the whole eye plate by adopting the eye plate as in the present invention.

  In the urinal according to one embodiment of the present invention, the bowl surface may include a cleaning port provided in the vicinity of the drain port and communicated with the drainage channel, and the eye plate may cover the cleaning port from above.

  In the present invention configured as described above, the shape of the eye plate is increased by covering the cleaning port from the top in addition to the drain port, so that an unwashed region of the eye plate is likely to occur. By adopting an eye plate, the flow of washing water can be spread over the entire eye plate.

  The urinal according to one embodiment of the present invention may be a wall-mounted urinal.

  In the present invention configured as described above, in the case of a wall-mounted urinal, since the height position of the front side of the urinal relative to the eye plate is lower than that of the floor-mounted urinal, urine splash is likely to occur. However, it is possible to suppress urine splash by adopting the eye plate as in the present invention.

  According to the present invention, it is possible to spread the flow of washing water over the entire eye plate and suppress the occurrence of non-washing areas.

It is side sectional drawing of the urinal by 1st embodiment of this invention. It is a perspective view of the eye plate by 1st embodiment of this invention. It is a side view of the eye plate by 1st embodiment of this invention. It is II sectional drawing in FIG. It is II-II sectional drawing in FIG. It is III-III sectional drawing in FIG. It is a figure showing the flow of the washing water from the water discharging part of the urinal by the first embodiment of this invention to a bottom face part. It is a figure showing the flow of the washing water in the vicinity of the eye plate by 1st embodiment of this invention. It is an upper view of the urinal by a first embodiment of the present invention. It is side sectional drawing of the urinal by 2nd embodiment of this invention. It is a perspective view of the eye plate of the urinal by 2nd embodiment of this invention. It is a side view of the eye plate by 2nd embodiment of this invention. It is a perspective view of the eye plate by the modification of this invention.

  A urinal according to an embodiment of the present invention will be described below with reference to the drawings.

<Configuration of urinal>
First, an overall configuration of a urinal according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a side sectional view of a urinal according to a first embodiment of the present invention.

  As shown in FIG. 1, a urinal 1 according to a first embodiment of the present invention is a wall-mounted urinal attached along a wall surface behind a bowl surface 3, a drain port 7, a drain trap 9, and the like. And water discharger 11.

  The bowl surface 3 has a back surface portion 4 and a bottom surface portion 5.

  The back surface portion 4 of the bowl surface 3 includes an upper portion 4a inclined backward from the upper end of the bowl surface 3, a lower portion 4b inclined forward from the lower end of the upper portion 4a, and an upper portion 4a. And side portions 4c located on the left and right sides of the lower portion 4b. The back surface portion 4 is formed with a continuous curved upper surface 4a, a lower portion 4b, and a side portion 4c, and has a gentle curved surface.

  The bottom surface portion 5 of the bowl surface 3 is formed continuously below the back surface portion 4.

  The drainage port 7 is formed in the bottom surface part 5 of the bowl surface 3, and the washing water that has passed through the drainage port 7 flows into a drainage trap 9 that forms sealed water on the downstream side of the drainage port 7.

  The water discharge part 11 is provided in the upper part of the back surface part 4 of the bowl surface 3, and discharges the wash water supplied through the water supply pipe 13 from water supply sources, such as a water supply, toward the bowl surface 3 below.

  A drainage passage 18 is formed on the downstream side of the drain trap 9 to drain the drain discharged from the drain trap 9 to the drain pipe 19 side. The bowl surface 3 is formed with a cleaning port 15 that allows the drainage channel 18 to communicate with the outside. The cleaning port 15 is an opening for cleaning the drainage channel 18 and the like, and a cleaning tool such as a brush can be inserted from the bowl surface 3 side of the cleaning port 15.

  The cleaning port 15 has an opening shape with a substantially circular cross section, and the cleaning port 15 is closed by attaching a substantially disk-shaped lid 16 to the cleaning port 15 so as to be detachable from the bowl surface 3 side. It has become.

  The bottom surface portion 5 of the bowl surface 3 is provided with a recess 5a formed so as to be recessed downward, and the eye plate 20 is detachably attached to the recess 5a from above in the recess 5a. It has become. In a state where the eye plate 20 is mounted in the recess 5a, the drain port 7 and the cleaning port 15 can be concealed by the eye plate 20, but the outer edge of the eye plate 20 and the peripheral edge of the recess 5a A gap 6 is formed between substantially the entire circumference. The gap 6 functions as an inflow port through which the washing water (drainage) flows into the drain port 7.

<Configuration of the eye plate>
Next, with reference to FIGS. 2-6, the structure of the eye plate by 1st embodiment of this invention is demonstrated. FIG. 2 is a perspective view of the eye plate according to the first embodiment of the present invention. FIG. 3 is a side view of the eye plate according to the first embodiment of the present invention. 4 is a cross-sectional view taken along the line II in FIG. 5 is a cross-sectional view taken along the line II-II in FIG. 6 is a cross-sectional view taken along line III-III in FIG.

  As shown in FIGS. 2 and 6, the eye plate 20 has an upper inclined surface 30 at the upper rear portion and a lower inclined surface 40 at the upper front portion.

  The upper inclined surface 30 has a ridge line 31, a right surface portion 32, and a left surface portion 33.

  The ridge line 31 extends in the front-rear direction at the center in the left-right direction of the upper inclined surface 30. In a state in which the eye plate 20 is attached to the concave portion 5a, the right surface portion 32 is inclined downward to the right with the ridge line 31 as the center, and is inclined upward (inclined upward) from the rear end toward the front. 33 is inclined downward to the left with the ridge line 31 as the center, and is inclined upward (inclined) from the rear end toward the front. That is, the upper inclined surface 30 is a left-right symmetrical mountain-shaped portion composed of a right surface portion 32 and a left surface portion 33 that are inclined downward from the left and right center to the left and right outer sides (see FIGS. 4 and 5), and the ridgeline 31 is an upward inclination It is a mountain-shaped ridge portion (ridge line portion) on the surface 30, and corresponds to the left-right center line of the upper inclined surface 30.

  The inclination angle θ1 formed by the horizontal line L1 extending in the front-rear horizontal direction through the vertex 31a at the front end of the ridge line 31 and the line L2 connecting the vertex 31a and the rear end point 31b at the rear end of the ridge line 31 is 27 degrees. In the present embodiment, the inclination angle θ1 is not limited to this, and is preferably in the range of 20 to 35 degrees.

  In addition, an inclination angle θ2 formed by a horizontal line L3 passing through the apex 31a in the horizontal direction, a line L4 connecting the apex 31a and the starboard point 31c at the right front end of the upper inclined surface 30, a horizontal line L3, and the apex The inclination angle θ3 formed by the line L5 connecting 31a and the left saddle point 31d at the left front end of the upper inclined surface 30 is both 20 degrees. In the present embodiment, the inclination angle θ2 and the inclination angle θ3 are not limited to this, and are preferably in the range of 15 to 30 degrees.

  As described above, the upper inclined surface 30 provided at the rear portion of the upper surface of the eye plate 20 is an inclined surface inclined upward from the rear to the front of the eye plate 20, and the left and right direction of the rear portion of the upper surface of the eye plate 20. It extends to. That is, the rear part of the upper surface of the eye plate 20 is formed as a slope inclined upward from the rear to the front over the entire left and right direction. In particular, in this embodiment, the upper inclined surface 30 is a slope inclined upward from the rear to the front over the entire left and right sides of the upper surface of the eye plate 20, but the right surface portion 32 and the left surface portion that form a ridge line portion in the left and right central portions. 33 is formed in a mountain shape.

  The downward inclined surface 40 includes a right surface portion 41, a left surface portion 42, and an attachment / detachment operation portion 43.

  In the state where the eye plate 20 is attached to the recess 5a, the lower inclined surface 40 is inclined downward to the right about the vertical line L6 that bisects the lower inclined surface 40 to the left and right, and from the rear end. Inclined downward (downwardly inclined) toward the front end.

  In a state where the eye plate 20 is attached to the recess 5a, the left surface portion 42 is inclined downward to the left on the downward inclined surface 40 about the vertical axis L6 that bisects the downward inclined surface 40 to the left and right, and the rear end Inclined downward (downwardly inclined) from the front toward the front end.

  The attachment / detachment operation part 43 is formed in the center of the downward inclined surface 40 so as to extend in the front-rear direction and protrude upward, and has a through-hole 44 penetrating from the left side surface toward the right side surface. . In this way, the eye plate 20 can be easily attached to and detached from the recess 5a by hooking the through hole 44 with a hook or the like.

  Also, a rib 21 protruding downward is formed near the front end of the lower surface of the eye plate 20. In a state in which the eye plate 20 is attached to the recess 5a, the rib 21 and the rear lower surface 22 of the eye plate 20 are in contact with the surface of the recess 5a.

<Flow of washing water>
Next, with reference to FIGS. 7 and 8, the urinal washing operation according to the first embodiment of the present invention will be described. FIG. 7 is a view showing a flow of washing water from the water discharge portion to the bottom portion of the urinal according to the first embodiment of the present invention. FIG. 8 is a diagram showing the flow of washing water near the eye plate according to the first embodiment of the present invention.

  When the user finishes urination, as shown in FIG. 7, the urinal 1 can wash the bowl surface 3 as much as possible from the water discharge portion 11 toward the bowl surface 3 with the wash water supplied from the water supply pipe 13. Dispense water so that it spreads across the left and right. The washing water discharged from the water discharge portion 11 toward the bowl surface 3 flows down while cleaning the back surface portion 4 of the bowl surface 3 from above to below, and is continuously formed below the back surface portion 4. It flows to the bottom part 5 made.

  At this time, since the back surface portion 4 of the bowl surface 3 is formed in a curved surface shape by being inclined downward from above, a portion of the wash water discharged from the water discharge portion 11 toward the left and right of the back surface portion 4. The part once flows down to the left and right, then gradually changes to a flow toward the center in the left-right direction, and becomes a flow concentrated in the center as it flows down. In addition, since there is no resistance that obstructs the flow of the washing water until the washing water flows from the back surface portion 4 to the bottom surface portion 5 of the bowl surface 3, the flow of the washing water is almost constant. It flows to the bottom surface portion 5 below the back surface portion 4 without decelerating.

  As shown in FIG. 8, the wash water that has flowed from the upper back surface portion 4 to the bottom surface portion 5 reaches the vicinity of the eye plate 20 provided on the bottom surface portion 5 (A1). When this washing water reaches the vicinity of the eye plate 20, a part of the washing water flows from the rear side of the eye plate 20 to the upper surface of the eye plate 20 (A2). On the other hand, other wash water flows directly into the gap 6 without flowing into the upper surface of the eye plate 20 (A3).

  The washing water that has flowed into the upper surface of the eye plate 20 from the rear side of the eye plate 20 as indicated by the arrow A <b> 2 first flows into the upper inclined surface 30 provided behind the eye plate 20. Since the upper inclined surface 30 is inclined upward from the rear end toward the front, the washing water that has flowed into the upper surface of the eye plate 20 from the rear side of the eye plate 20 collides with the upper inclined surface 30 to reduce the flow velocity. At the same time, it temporarily stays on the upper inclined surface 30. Furthermore, since a ridge line 31 extending in the front-rear direction is provided at the center of the upper inclined surface 30, the cleaning water temporarily retained on the upper inclined surface 30 flows before passing through the upper inclined surface 30. Slightly spread left and right from the center (A4).

  Then, the washing water passes through the upper inclined surface 30 and flows into the lower inclined surface 40. Since the downward inclined surface 40 has a right surface portion 41 inclined downward toward the right end and a left surface portion 42 inclined downward toward the left end, the wash water flowing on the right surface portion 41 and the left surface portion 42 Then, it flows down so that the whole is washed evenly while spreading in the left-right direction (A5). Further, the washing water also flows to the front end of the downward inclined surface 40 (A6).

  The washing water indicated by the arrows A5 and A6 flows down onto the downward inclined surface 40 and then flows into the gap 6 between the eye plate 20 and the recess 5a. The washing water flowing into the gap 6 flows into the drain trap 9 from the drain port 7 and is discharged from the drain pipe 19 through the drain channel 18.

<Action and effect>
Next, the effect of the urinal according to the first embodiment of the present invention will be described.

  In the first embodiment of the present invention, the back surface portion 4 of the bowl surface 3 in the urinal 1 is formed in a curved surface shape by inclining backward from the upper side to the lower side. The washing water spouted into the water has a relatively high speed when it flows into the eye plate 20 installed on the bottom surface portion 5 and has a flow biased toward the center. On the other hand, the top plate 20 has an upper inclined surface 30 inclined upward from the rear end toward the front on the upper surface. As a result, the wash water that has flowed in from the rear side of the eye plate 20 collides with the upper inclined surface 30 to reduce the flow velocity, and flows down the upper surface of the eye plate 20 after temporarily staying on the upper inclined surface 30. Therefore, the washing water that has flowed into the upper surface of the eye plate 20 can be spread over the entire upper surface of the eye plate 20, and the occurrence of an unwashed region on the upper surface of the eye plate 20 can be suppressed.

  Further, the upper inclined surface 30 of the eye plate 20 has a ridge line 31 extending in the front-rear direction at the center in the left-right direction. Thereby, the washing water whose flow is biased toward the center when it flows into the upper inclined surface 30 of the eye plate 20 can be made to flow to the left and right on the upper inclined surface 30. Therefore, the flow of washing water can be further spread over the entire upper surface of the eye plate 20, and the occurrence of unwashed areas on the upper surface of the eye plate 20 can be suppressed.

  Further, the upper inclined surface 30 of the eye plate 20 has a ridge line 31, the right surface portion 32 is inclined downward to the right around the ridge line 31, and is inclined upward from the rear end to the front, and the left surface portion 33. Is inclined downward to the left with the ridgeline 31 as the center, and is inclined upward from the rear end toward the front. Therefore, even if the user performs urination in a urine trajectory that directly collides with the upper inclined surface 30 of the eye plate 20, the urine that has collided with the upper inclined surface 30 is bounced back and forth in the bowl surface 3 By distributing the urine, the urine splash to the outside of the urinal 1 can be suppressed.

  In addition, the downward inclined surface 40 of the eye plate 20 has a right surface portion 41 inclined downward from the vertical axis L6 toward the right end about the vertical axis L6 that bisects the downward inclined surface 40 left and right, and toward the left end. And a left surface portion 42 inclined downward. Thereby, it is possible to make the washing water flowing from the upper inclined surface 30 to the lower inclined surface 40 and flowing in the center to flow to the left and right on the lower inclined surface 40, so that the washing water is spread over the entire upper surface of the eye plate 20. Can be spread.

  Further, the bowl surface 3 is formed with a cleaning port 15 communicating with the drainage channel 18, and the drainage port 7 and the cleaning port 15 are concealed by the eyeplate 20 when the eyeplate 20 is mounted in the recess 5 a. ing. Therefore, the size of the eye plate is relatively large, and an unwashed area on the upper surface of the eye plate is more likely to occur. However, by using the eye plate 20 in the urinal 1, the wash water is supplied to the eye plate. 20 can be spread over the entire top surface. That is, in the configuration in which the cleaning port 15 is provided in the vicinity of the drain port 7 and the portion covered by the eye plate 20 is relatively large, the upper surface of the eye plate 20 is effectively obtained by adopting the eye plate 20 of the present embodiment. The non-washing area can be effectively reduced.

  The urinal 1 is a wall-mounted urinal, and the height of the front end of the urinal 1 relative to the position of the eye plate 20 is lower than that of the floor-mounted urinal. 9, even if the user N urinates in the urine trajectory R that directly collides with the upper inclined surface 30 of the eye plate 20, as shown in FIG. Since it bounces back into the back surface part 4, the urine splash to the outside of the urinal 1 can be suppressed.

<Second embodiment>
Next, with reference to FIGS. 10-12, the urinal by 2nd embodiment of this invention is demonstrated. FIG. 10 is a side sectional view of a urinal according to the second embodiment of the present invention. FIG. 11 is a perspective view of the urinal according to the second embodiment of the present invention. FIG. 12 is a side view of the eye plate according to the second embodiment of the present invention.

  In the urinal 100 according to the second embodiment of the present invention shown in FIGS. 10 to 12, the same components as those of the urinal 1 according to the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted. .

  As shown in FIG. 10, the urinal 100 is a floor-mounted urinal placed on the floor F of the toilet room, and opens up and down on the bottom surface of the recess 105 a provided in the bottom surface portion 105 of the bowl surface 103. The drain tube 105b is erected, and includes a pan 120 that is detachably attached to the recess 105a and covers the recess 105a and the drain tube 105b.

  The drain tube 105b has a substantially cylindrical shape opened up and down, and is erected at the center of the recess 105a. Further, the opening at the upper end of the drain tube 105b is located above the bottom surface of the recess 105a, the opening at the lower end of the drain tube 105b is located below the bottom surface of the recess 105a, and the drain tube 105b is located in the recess 105a. The inside and the outside of the recess 105a communicate with each other through the bottom surface.

  As shown in FIGS. 11 and 12, the eye plate 120 includes a top plate portion 121 and a cylindrical portion 122, and the upper surface of the top plate portion 121 is similar to the eye plate 20 according to the first embodiment described above. It has an upper inclined surface 130 and a lower inclined surface 140. Further, a rib 121 a is formed near the front end of the bottom surface of the top plate portion 121, and a rib 121 b is formed near the rear end of the bottom surface of the top plate portion 121.

  The cylindrical portion 122 protrudes downward from the lower surface of the top plate portion 121, and has a substantially cylindrical shape whose upper end is inclined from the front to the rear so as to follow the inclination of the top plate portion 121 and whose lower end is opened. Is. Moreover, as for the cylindrical part 122, the upper part 122a is formed more thinly than the lower part 122b. In the present embodiment, the inner diameter of the cylindrical portion 122 is substantially the same in the entire vertical direction, while the outer diameter of the lower portion 122b is larger than the outer diameter of the upper portion 122a, so that the wall thickness of the upper portion 122a is increased. Is thinner than the wall thickness of the lower part 122b. However, a difference in wall thickness between the upper portion 122a and the lower portion 122b may be provided due to the difference in the inner diameter of the cylindrical portion 122, or due to the difference in both the outer diameter and the inner diameter.

  In a state in which the eye plate 120 is attached to the recess 105a, the rib 121a and the rib 121b are in contact with the step 105c of the recess 105a, and the outer edge of the eye plate 120 and the step 105c are almost entirely covered. A gap 106 is formed. This gap 106 functions as an inflow port through which the cleaning water flows into the recess 105a.

  The inner diameter of the cylindrical portion 122 is larger than the outer diameter of the drain tube 105b and smaller than the inner diameter of the recess 105a. Therefore, when the eye plate 120 is attached to the concave portion 105a, the cylindrical portion 122 is fitted into a concave space formed by the inner peripheral wall surface and the bottom surface of the concave portion 105a and the outer peripheral wall surface of the drain tube 105b.

  The lower end of the cylindrical part 122 is located below the upper end of the drain cylinder 105b and has a height that does not reach the bottom surface of the recess 105a. A substantially constant gap is formed between the drain tube 105b and the cylindrical portion 122, and the drain tube 105b and the cylindrical portion 122 have a substantially coaxial positional relationship. Thereby, the drainage trap is formed by the cylindrical portion 122, the inner peripheral wall surface and the bottom surface of the recess 105a, and the outer peripheral wall surface of the drain tube 105b.

  In the urinal 100 configured as described above, when the wash water flowing to the bottom surface portion 105 of the bowl surface 103 reaches the vicinity of the eye plate 120, a part of the wash water moves forward from the rear side on the upper surface of the eye plate 120. After flowing to the side, it flows into the gap 106, and other cleaning water flows directly into the gap 106 without flowing through the upper surface of the eye plate 120. Since the upper surface of the top plate portion 121 of the eye plate 120 has the same configuration as the upper surface of the eye plate 20 in the first embodiment described above, the wash water flowing from the rear side to the front side of the upper surface of the eye plate 120 is It flows so as to spread over the entire upper surface of the eye plate 120. Thereby, there exists an effect similar to 1st embodiment mentioned above.

  Moreover, since the upper part 122a is formed thinner than the lower part 122b, the cylindrical part 122 is thicker at the lower part than in the case where the upper part 122a is formed with a certain thickness up and down, By increasing the substitution rate of the trap and reducing the volume by reducing the thickness of the upper part, the cost can be reduced and sink marks can be prevented.

<Modification>
As mentioned above, although embodiment of the technique which this application discloses was described, the technique which this application discloses is not limited above.

  For example, in the above-described embodiment, the ridgeline 31 extending in the front-rear direction is provided at the center in the left-right direction of the upper inclined surface 30 of the eye plate 20, but the present invention is not limited to this, as shown in FIG. The inclined surface 30 may not have the ridge line 31. In this case, the upper inclined surface 30 does not have the right surface portion 32 and the left surface portion 33 that form the mountain-shaped portion forming the ridge line portion, and the entire inclined surface is inclined upward from the rear to the front of the eye plate. As a gentle curved surface.

  The elements included in each of the embodiments described above can be combined as much as technically possible, and combinations thereof are also included in the scope of the present invention as long as they include the features of the present invention.

DESCRIPTION OF SYMBOLS 1 Urinal 3 Bowl surface 4 Back surface part 4a Upper part 4b Lower part 4c Side part 5 Bottom part 5a Concave part 6 Gap 7 Drain port 9 Drain trap 11 Drain part 13 Water supply pipe 15 Cleaning port 16 Cover 18 Drain channel 19 Drain pipe 20 Eye plate 21 Rib 22 Lower back surface 30 Upper inclined surface 31 Ridge line 31a Top vertex 31b Bottom point 31c Right saddle point 31d Left saddle point 40 Lower inclined surface 41 Right surface portion 42 Left surface portion 43 Attachment / detachment operation portion 44 Through hole

Claims (6)

A bowl surface including a back surface portion and a bottom surface portion formed continuously below the back surface portion;
A drain outlet formed in the bottom portion;
An eye plate covering the drain outlet from above;
A water discharger for discharging wash water from above the bowl surface;
A urinal having
In the rear part of the upper surface of the eye plate, it has an upper inclined surface inclined upward from the rear to the front of the eye plate,
The upper inclined surface extends in the left-right direction, and is a urinal that is highest at the rear side from the center in the front-rear direction on the upper surface of the eye plate .   The urinal according to claim 1, wherein the upper inclined surface has a ridge line extending in the front-rear direction.   The urinal according to claim 1 or 2, wherein an upper surface of the eye plate extends in the front-rear direction and is inclined downward to the left and right about a vertical axis that divides the eye plate into left and right.   The urinal according to any one of claims 1 to 3, wherein the back portion is formed in a curved surface shape by being inclined rearward from above to below. The bowl surface includes a cleaning port provided in the vicinity of the drain port and communicated with the drainage channel,
The urinal according to any one of claims 1 to 4, wherein the eye plate covers the cleaning port from above.   The urinal according to any one of claims 2 to 5, wherein the urinal is a wall-mounted urinal.

Images