JP7082325B2 - urinal - Google Patents

Description

The present invention relates to a urinal, and more particularly to a urinal that cleans the bowl surface with washing water.

Conventionally, as shown in Patent Document 1, in a urinal, a water guide stage portion is provided on the inner surface of a side wall of a bowl surface, and a relatively large amount of washing water is guided over a wide range by the water guide step portion to be used for cleaning. Has been done.
Further, in a urinal as shown in Patent Document 1, cleaning of the inner portion of the front wall of the bowl portion may be insufficient. Therefore, as shown in Patent Document 2, the convex surface of the water-conducting convex portion of the bowl portion. There is known a urinal that repels the washing water flowing from the outside to the inside of the water guide convex portion by providing a locally protruding protrusion near the top and further increasing the height of the water guide protrusion. In this urinal, the protrusions repel the washing water that flows from the outside to the inside of the water guide convex part out of a relatively large amount of washing water, so that the washing water also flows to the inner part of the front wall of the bowl part. Is said to be possible.

Further, in recent years, as shown in Patent Document 3, the bowl surface is formed to face the front, and the washing water discharged from the water discharge device is discharged so as to spread in the left-right direction of the bowl surface, so that a wide range of the bowl surface can be washed. Urinals are being considered. In such a urinal, the washing water discharged in the left-right direction forms a water film along a relatively gentle bowl surface to wash the bowl surface.

Japanese Unexamined Patent Publication No. 2001-115533 Japanese Unexamined Patent Publication No. 2014-234621 Japanese Patent No. 050660239

However, with the recent demand for water saving, it is also required to reduce the amount of washing water in the urinal. In order to reduce the amount of wash water, it is necessary to reduce the amount of wash water per urinal and / or the amount of wash water per unit time. When the amount of washing water per urinal is reduced and the washing time is constant, the amount of washing water per unit time is also reduced. When the bowl surface is to be washed over a wide area while the amount of washing water is reduced, the amount of water is reduced, so that the thickness of the water film formed on the bowl surface becomes thin. When the thickness of the water film becomes thin in this way, the momentum of the spread washing water tends to decrease, and the reduced momentum of the washing water tends to flow down from the stepped portion on the bowl surface, and the washing water is easily dropped to the stepped portion. There was a problem that it was not possible to lead forward along the line. As a result, there has been a problem that the entire bowl surface cannot be washed well.

The present invention has been made to solve the above-mentioned problems, and the amount of washing water is reduced as the water is saved, and the washing water discharged by the water discharge device so as to spread in the left-right direction on the bowl surface has a relatively high water force. Even in the case of forming a thin water film that is weak and has a relatively small amount of water, the reversely inclined surface of the shelf is inclined so as to face outward with respect to the inward facing bowl surface, so that it can be washed. Suppressing the flow of water from the reversely inclined surface toward the bowl surface, the washing water can be guided toward the front area on the shelf, and the area on the front side of the bowl surface can be washed well. Can be done. Therefore, it is an object of the present invention to provide a urinal capable of satisfactorily cleaning the entire bowl surface.

In order to achieve the above object, the present invention is a urinal for washing the bowl surface with washing water, which is provided in the bowl surface forming the surface for receiving urine and the upper region in the bowl surface. It has a water discharge device that discharges wash water so as to spread in the left-right direction of the bowl surface, and the bowl surface extends from the left and right side regions of the bowl surface to the front side region while descending to the left and right sides of the bowl surface. It has a shelf that guides a portion of the wash water flowing down the area towards the front area, the shelf with the outer end connecting portion of the bowl surface that connects to the outer end of the shelf in a horizontal section. A region formed so that the angle formed by the outer end of the shelf is blunt, and the outer end connection of the bowl surface and the outer end of the shelf that connect to the outer end of the bowl in a horizontal section. It is characterized by having a region formed so that the angle formed is a sharp angle .
In the present invention configured as described above, the amount of washing water is reduced as the water is saved, and the washing water discharged by the water discharge device so as to spread in the left-right direction on the bowl surface has a relatively weak water force and a relatively small amount of water. Even in the case of forming a thin water film, the forward-sloping surface of the shelf is inclined so as to face the inside of the bowl surface, so that the washing water flows down toward the inward-facing bowl surface. It is possible to clean the areas on both the left and right sides of the bowl surface well, and since the reverse inclined surface of the shelf is inclined so as to face outward with respect to the inward facing bowl surface. It suppresses the flow of wash water from the reverse inclined surface toward the bowl surface, and can guide the wash water toward the front area on the shelf, and cleans the front area of the bowl surface well. be able to. Therefore, the entire bowl surface can be satisfactorily washed.
Further, preferably, in a region formed so that the angle formed by the outer end connection portion of the bowl surface and the outer end portion of the shelf portion is an blunt angle, the bowl surface connected to the inner end portion of the shelf portion in the horizontal cross section is formed. The shelf is formed so that the angle between the inner end connection and the inner end of the shelf is blunt, and the angle between the outer end connection of the bowl surface and the outer end of the shelf is sharp. In the region formed so as to be, the shelf portion is formed so that the angle formed by the inner end portion of the bowl surface connected to the inner end portion of the shelf portion and the inner end portion of the shelf portion is sharp in the horizontal cross section. The shelves.
Further, preferably, the region formed so that the angle formed by the outer end connection portion of the bowl surface and the outer end portion of the shelf portion is an acute angle is formed so that the outer end connection portion of the bowl surface and the outer end portion of the shelf portion are formed. It is provided at a position higher than the region formed so that the angle between the bowl and the bowl becomes an acute angle.

In the present invention, preferably, the reverse inclined surface of the shelf portion of the bowl surface is formed in the vicinity of the position where the upper end thereof reaches the shelf portion at both ends of the washing water discharged from the water discharge device and spread in the left-right direction. ..
In the present invention configured as described above, the upper ends of the inverted inclined surface are formed in the vicinity of the positions where both ends of the washing water spreading in the left-right direction on the bowl surface reach the shelf portion. Therefore, it is possible to prevent the washing water from flowing inward from the reversely inclined surface and to guide the washing water toward the front region on the shelf. Therefore, even when the water force of the washing water discharged from the water discharging device becomes relatively weak, it is possible to easily guide the washing water toward the region on the front side. Therefore, even when the amount of washing water is reduced, the entire bowl surface can be washed satisfactorily.

In the present invention, preferably, the lower end of the inverted inclined surface of the shelf portion of the bowl surface is formed in the vicinity of the intermediate position of the shelf portion.
In the present invention configured as described above, since the lower end of the reverse inclined surface is formed in the vicinity of the intermediate position of the shelf portion, it is possible to prevent the washing water from flowing inward from the inverted inclined surface. Moreover, it is possible to form a flow of the washing water toward the front area along the shelf up to the vicinity of the intermediate position of the shelf, and it is possible to easily guide the washing water toward the front area. Therefore, even when the water force of the washing water discharged from the water discharging device becomes relatively weak, it is possible to easily guide the washing water toward the region on the front side. Therefore, even when the amount of washing water is reduced, the entire bowl surface can be washed satisfactorily.

In the present invention, a forward inclined surface is preferably formed from the lower end of the reverse inclined surface of the shelf portion of the bowl surface to the lower end of the shelf portion.
In the present invention configured as described above, the reverse inclined surface of the shelf portion suppresses the flow of the washing water from the inverted inclined surface toward the bowl surface, and the washing water flowing on the inverted inclined surface of the shelf portion is prevented. The forward inclined surface formed from the lower end of the reverse inclined surface to the lower end of the shelf allows the bowl surface to gradually flow down toward the bowl surface, and the area on the front side of the bowl surface can be well cleaned, and the entire bowl surface can be cleaned. Can be washed well.

In the present invention, preferably, the shelf portion of the bowl surface forms a first forward inclined surface forming a forward inclined surface on the upper end side, a reverse inclined surface, and a forward inclined surface on the lower end side in order from above. It has a forward sloping surface.
In the present invention configured as described above, in the shelf portion, the first forward inclined surface, the reverse inclined surface, and the second forward inclined surface are formed in this order from above, so that the first forward inclined surface is formed. , A part of the washing water can be flowed down along the bowl surface so as to wash the bowl surface from the upper part of the shelf. Further, the reversely inclined surface can prevent the washing water from flowing inward from the reversely inclined surface, and can guide the washing water toward the region on the front side on the shelf portion. Further, the second forward inclined surface can allow a part of the washing water guided to the front side by the reverse inclined surface to flow down along the bowl surface so as to wash the bowl surface from the lower part of the shelf portion. Therefore, the region on the front side of the bowl surface can be satisfactorily washed, and the entire bowl surface can be satisfactorily washed.

In the present invention, the bowl surface is preferably formed so as to gradually recede downward from the upper end of the bowl surface and the radius of curvature is continuously reduced.
In the present invention configured as described above, the washing water can be discharged from the water discharge device so as to spread in the left-right direction on the bowl surface, and in the vicinity of the left and right ends where the water is discharged so as to spread in the left-right direction on the bowl surface. Even when the water force of the washing water is relatively weak, it is possible to easily guide the washing water toward the region on the front side. Therefore, even when the amount of washing water is reduced, the entire bowl surface can be washed satisfactorily.

According to the urinal of the present invention, the amount of washing water is reduced as the water is saved, and the washing water discharged by the water discharge device so as to spread in the left-right direction on the bowl surface is thin water having a relatively weak water force and a relatively small amount of water. Even in the case of forming a film, the reverse inclined surface of the shelf portion is inclined so as to be directed outward with respect to the inward facing bowl surface, so that the washing water is directed from the inverted inclined surface to the bowl surface. It is possible to suppress the flow down and guide the washing water toward the front area on the shelf, and the area on the front side of the bowl surface can be washed well, and the entire bowl surface can be satisfactorily washed. Can be washed.

It is an overall perspective view which shows the urinal by one Embodiment of this invention. It is a top view of the urinal of FIG. It is a central sectional view of the urinal of FIG. It is sectional drawing seen along the IV-IV line of FIG. It is sectional drawing seen along the VV line of FIG. It is sectional drawing seen along the VI-VI line of FIG. FIG. 5 is a partially enlarged cross-sectional view showing an enlarged portion of the vicinity of the reverse inclined surface of the shelf portion of FIG. It is sectional drawing seen along the line VIII-VIII of FIG. It is sectional drawing seen along the IX-IX line of FIG. It is sectional drawing seen along the X-X line of FIG. It is a schematic diagram which shows the state of the change of the inclination of the 1st forward inclined surface, the reverse inclined surface and the 2nd forward inclined surface in the whole shelf part of the urinal by one Embodiment of this invention.

A urinal according to an embodiment of the present invention will be described with reference to the accompanying drawings. First, the basic structure of the urinal will be described with reference to FIGS. 1 to 3. 1 is an overall perspective view showing a urinal according to an embodiment of the present invention, FIG. 2 is a top view of the urinal of FIG. 1, and FIG. 3 is a central sectional view of the urinal of FIG.

As shown in FIGS. 1 to 3, reference numeral 1 indicates a urinal according to an embodiment of the present invention, and the urinal 1 is for cleaning a urinal body 2 made of earthenware and the urinal body 2. The automatic toilet bowl cleaning unit 4 (illustrated in FIG. 3 and omitted in other drawings) is provided. The urinal 1 is a wall-mounted urinal that is attached along the back wall surface W so that the lowermost portion of the urinal 1 is floated from the floor surface G, but the urinal 1 is arranged directly on the floor surface. It may be a floor-standing urinal.
The urinal 1 in one embodiment of the present invention uses a washing water amount of 0.5 liter to 1.2 liter for one washing of the urinal 1 so that it can be used as a water-saving urinal. Although it is possible to perform one-time cleaning, it is also applicable to urinals that use about 4 liters of washing water for one-time cleaning of the urinal 1. As described above, the amount of washing water used may differ depending on the type of toilet bowl.

The urinal body 2 of the urinal 1 has a storage chamber 6 for accommodating the above-mentioned automatic toilet cleaning unit 4 at the upper end, a bowl surface 8 extending downward from the front surface 7 of the storage chamber 6, and the bowl surface 8. It is provided with a discharge port 10 formed at the bottom of the bowl.

The storage chamber 6 is formed by a lid 3 which is a separate body from the urinal body 2. Further, the front surface 7 of the storage chamber 6 is formed so as to be inclined toward the rear, as will be described in detail later. Further, a perforated plate (not shown) is arranged at the discharge port 10. Further, the discharge port 10 is connected to the drain trap pipeline 12 and the drain pipe 13 arranged on the downstream side.

Next, the automatic toilet bowl cleaning unit 4 will be described with reference to FIG.
The automatic toilet bowl cleaning unit 4 includes a water supply pipe 14 that supplies cleaning water from a water supply source such as water supply, a flow rate adjusting device 16 provided in the water supply pipe 14, and an on-off valve that is attached to the water supply pipe 14 to supply and stop water supply. 18, a supply passage 20 for supplying wash water from the on-off valve 18 to a spreader to be described later, a spreader 22 which is a water discharge portion attached to the tip of the supply passage 20, and a human body detection sensor 24 for detecting the presence or absence of a user. A control unit 26 capable of controlling the on-off valve 18 and the like based on a detection signal from the human body detection sensor 24 and a predetermined control program and the like is provided.

The flow rate adjusting device 16 is a constant flow rate valve capable of adjusting the washing water passing through the water supply pipe 14 to an appropriate constant flow rate. The flow rate adjusting device 16 may be configured by another device capable of adjusting the washing water to an appropriate flow rate by using a flow rate sensor or the like. The flow rate adjusting device 16 may be configured to be controlled by the control unit 26. The on-off valve 18 is a solenoid valve that opens and closes the flow path of the water supply pipe 14 (and the flow path of the supply passage 20 on the downstream side) by the control signal of the control unit 26. The on-off valve 18 may be configured by another flow path switchgear capable of supplying and stopping water supply.

In the present embodiment, the automatic toilet cleaning unit 4 includes an on-off valve 18 attached to a water supply pipe 14 to supply and stop water supply, and the control unit 26 opens and closes the on-off valve 18 to wash water to the supply passage 20. Controls the start and stop of supply.

The human body detection sensor 24 is an infrared sensor that detects the presence or absence of a user on the front side (front side) of the urinal 1 and the distance to the user. When the human body detection sensor 24 detects that the user has added some extra work and is separated from the urinal 1 by a predetermined distance, an operation signal is transmitted from the control unit 26, and the operation signal opens the on-off valve 18 to open the on-off valve 18. Washing water is supplied from the water supply pipe 14 to the spreader 22, and the bowl surface 8 of the urinal 1 is washed. The human body detection sensor 24 is not limited to the infrared sensor, but may be a concealable radio wave type sensor (microwave sensor).
The control unit 26 controls to open and close the on-off valve 18 in response to the detection result of the presence or absence of the user of the human body detection sensor 24, and also every time a preset predetermined time, for example, 2 hours elapses. , An operation signal is transmitted from the control unit 26, and the on-off valve 18 is controlled to be opened by the operation signal. As a result, the washing water is supplied from the water supply pipe 14 to the spreader 22, the bowl surface 8 of the urinal 1 is washed, and germs in the drain trap pipeline 12 and the drain pipe 13 arranged on the downstream side of the discharge port 10 are cleaned. It is possible to perform equipment protection cleaning that suppresses the propagation of urinals and suppresses the adhesion of urinal stones and the like.

As shown in FIG. 1 and the like, in the automatic toilet bowl cleaning unit 4, the spreader 22 is attached to the front surface 7 of the storage chamber 6 of the front surface portion 8a of the urinal body 2. The spreader 22 is provided substantially in the center of the upper region in the bowl surface 8, and discharges the washing water so as to spread from the central region of the bowl surface 8 toward the left and right ends. The spreader 22 includes a spout portion 28 that discharges the wash water so as to spread from the central region of the bowl surface 8 to a wide range of left and right regions, and a supply passage 30 that supplies the wash water to the spout portion 28. The spreader 22 has a flow rate of wash water discharged from the spreader 22 per unit time in the range of 7.0 liters / minute to 13 liters / minute.

The spout portion 28 is internally connected to the front end of the supply passage 30, and is formed so as to open the outer periphery of the spreader 22 in a fan shape from the lower portion to the left-right direction. The spout portion 28, which opens in a fan shape in this way, discharges the washing water so as to spread to the vicinity of the left and right ends of the bowl surface 8, and forms a water film of the water flow over a wide area on the bowl surface 8 while the water flow flows. The surface of the bowl surface 8 can be cleaned. The supply passage 30 is connected to the tip of the water supply pipe 14.

Next, the structure of the bowl surface 8 of the urinal body 2 of the urinal 1 will be described with reference to FIGS. 1 to 3.
The bowl surface 8 forms an inward facing surface for receiving urine in the urinal. The bowl surface 8 has an integral structure with the front surface 7 of the storage chamber 6 in the urinal body 2. The bowl surface 8 is formed continuously with the front surface 7 of the storage chamber 6 in the upper portion thereof. Here, "continuous" between the front surface 7 of the storage chamber 6 and the bowl surface 8 means that the front surface 7 and the bowl surface 8 of the storage chamber 6 are formed flush with each other or substantially flush with each other. There is. Further, it does not have to be completely flush with each other. For example, a small step may be provided, and the washing water flowing from the front surface of the storage chamber 6 to the bowl surface 8 may not be separated. Therefore, the washing water discharged from the spreader 22 so as to spread in the left-right direction can flow while forming a water film so as to spread smoothly on the upper part of the bowl surface 8.

The bowl surface 8 has an arc-shaped (arch-shaped) front portion 8a whose front surface is open so as to face the user from the upper portion to the lower portion. The bowl surface 8 is not provided with a side surface portion of the bowl surface 8 that projects forward from the bowl surface in a wall shape in the upper region where the spreader 22 is provided, and is provided only from the front portion 8a. It is formed.

The front portion 8a of the bowl surface 8 is formed by a concave curved surface continuous in the left-right direction. The upper region formed only from the front portion 8a of the bowl surface 8 is one arc (curvature radius R) drawn with one radius of curvature R from the left end portion 8b to the right end portion 8c of the bowl surface 8 in a plan view. Is one arc that does not change substantially on the way, and forms a single R region formed along an arc (a arc called a single R). That is, in the single R region, the curved surface is formed by a substantially single arc shape having a substantially single radius of curvature R. In this single R region, the radius of curvature of the arc is formed so as to gradually decrease and the curvature gradually increases toward the lower side from the upper end 8d of the bowl surface 8. The region further below the single R region of the bowl surface 8 forms a composite R region which is a composite shape portion of a combination of arcs having two types of radius radii R or a combination of arcs and straight lines.

The front portion 8a of the bowl surface 8 is formed as a concave curved surface having a relatively shallow depth. The bowl surface 8 is a wall-mounted surface 9 on the back surface of the urinal 1 from the left end 8b in a horizontal cross section across the spreader 22 (the urinal of the present invention is also applicable to the floor-standing flush toilet as described above. Even if it is not actually mounted on the wall surface, the vertical line drawn perpendicular to the wall mounting surface 9 as the back surface of the urinal 1 and the front portion 8a of the bowl surface 8 (for example, the front portion 8a). The angle formed by the tangent line at the end portion) at the left end portion 8b is formed in an angle in the range of more than 45 degrees and less than 90 degrees. The bowl surface 8 is formed symmetrically, and the same relationship is established at the right end portion 8c.
Further, as shown in FIG. 1, the bowl surface 8 has a line segment connecting the left end portion 8b and the right end portion 8c of the bowl surface 8 in a horizontal cross section crossing the spreader 22, and an arc having this line segment as a diameter. It is formed so as to be located in the range between and.

The front portion 8a of the bowl surface 8 is arranged so that the position of the front portion 8a at the center of the bowl surface 8 in each cross section obtained by cutting the bowl surface 8 horizontally gradually recedes downward from the upper end 8d of the bowl surface 8. It is formed. Further, in the front portion 8a of the bowl surface 8, the arc shape of the front portion 8a of the bowl surface 8 in each cross section obtained by cutting the bowl surface 8 horizontally has a radius of curvature continuously downward from the upper end 8d of the bowl surface 8. Is formed to be small.
Such a bowl surface 8 can form a water film so that the washing water discharged from the spreader 22 spreads in the left-right direction on the bowl surface 8. Further, even when the amount of washing water discharged from the spreader 22 is reduced due to the request for water saving, a relatively thin water film is formed over a wide area on the bowl surface 8 by the washing water having a relatively small flow rate, and the bowl surface is formed. 8 can be washed over a wide area.
Further, since such a bowl surface 8 is formed so as to gradually recede downward from the upper end 8d of the bowl surface 8 and the radius of curvature is continuously reduced, the bowl surface 8 is formed. Below, the washing water can be more reliably suppressed from being scattered from the bowl surface 8 to the outside.

Further, the bowl surface 8 is formed so that the left end portion including the left end portion 8b and the right end portion including the right end portion 8c of the bowl surface 8 project forward toward the lower front end portion 8e. Has been done.
Such a bowl surface 8 is formed so that the right end portion 8c of the bowl surface 8 and the left end portion 8b of the bowl surface 8 project forward as they go downward, so that the lower portion of the bowl surface 8 is formed. In the above, it is possible to more reliably suppress the washing water from being scattered from the bowl surface 8 to the outside beyond the right end portion 8c or the left end portion 8b.

In one embodiment of the present invention, the bowl surface 8 may be formed by another shape in which the washing water discharged from the spreader 22 can flow down while flowing so as to spread in the left-right direction of the bowl surface 8. good.

Next, the structure of the shelf portion 32 of the bowl surface 8 of the urinal body 2 of the urinal 1 will be described with reference to FIGS. 1 to 8.
4 is a cross-sectional view taken along line IV-IV of FIG. 3, FIG. 5 is a cross-sectional view taken along line VV of FIG. 3, and FIG. 6 is taken along line VI-VI of FIG. It is a cross-sectional view seen along, FIG. 7 is a partially enlarged cross-sectional view showing an enlarged portion near the reverse inclined surface of the shelf portion of FIG. 5, and FIG. 8 is a partially enlarged cross-sectional view taken along the line VIII-VIII of FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 3, FIG. 10 is a cross-sectional view taken along line XX of FIG. 3, and FIG. 11 is a cross-sectional view of the present invention. It is a schematic diagram which shows the state of the change of the inclination of the 1st forward inclined surface, the reverse inclined surface and the 2nd forward inclined surface in the whole shelf part of the urinal by one Embodiment.

The bowl surface 8 extends from the left and right side regions of the bowl surface 8 while descending to the lower and front side regions, and a part of the washing water flowing down on the left and right side regions of the bowl surface 8 is in the front side region. It has a shelf portion 32 that leads toward. The shelf portion 32 forms a flat surface portion extending laterally with respect to the bowl surface 8. The flat surface portion of the shelf portion 32 forms a flow path on the upper surface so that water can easily flow, and the washing water can be guided along the shelf portion 32 to the right side shelf portion tip portion 32o or the left side shelf portion tip portion 32p. It has become like. Therefore, the shelf portion 32 allows the washing water to reach the region on the front side of the bowl surface 8 with a relatively small amount of washing water, and the bowl surface 8 can be reliably washed in a wider range than before.

The shelf portion 32 of the bowl surface 8 is outward in the upper region of the shelf portion 32 with respect to the first forward inclined surface 32a inclined so as to be directed toward the inside of the bowl surface 8 and the inward facing bowl surface 8. It includes an inverted inclined surface 32b inclined so as to be directed, and a second forward inclined surface 32c inclined so as to be directed toward the inside of the bowl surface 8 in the lower region of the shelf portion 32.
The shelf portion 32 of the bowl surface 8 has left and right shelf portions 32 formed in a shape symmetrical with respect to the central plane P extending to the center of the urinal body 2.

As shown in FIG. 4, the first forward inclined surface 32a is inclined so as to be directed inward of the bowl surface 8, that is, inward so as to follow the inward facing bowl surface 8. The direction of the inclined surface (flat surface) of the first forward inclined surface 32a is inward in accordance with the direction of the inward facing bowl surface 8 (although the direction is slightly different from the inward direction of the nearby bowl surface 8), the bowl surface 8 It is facing inward, which is directed to the inside of the bowl. The fact that the first forward inclined surface 32a is directed to the inside of the bowl surface 8 means that the flat surface of the first forward inclined surface 32a is directed toward the central plane P inside the bowl surface 8. ..
As described above, the first forward inclined surface 32a is oriented toward the position on the central plane P. More specifically, the perpendicular line V1 orthogonal to the plane of the first forward inclined surface 32a extends inward in such a direction that it can intersect with the central plane P (the plane extending the central plane P). The first forward inclined surface 32a is formed inward.

As shown in FIG. 4, in the horizontal cross section in the upper end region of the shelf portion 32, in the first forward inclined surface 32a, the inner end portion 32d of the first forward inclined surface of the shelf portion 32 is the outer end portion 32e of the first forward inclined surface. It is formed by being located on the rear side of the shelf. Since the inner end portion 32d of the first forward inclined surface is located on the rear side of the outer end portion 32e of the first forward inclined surface, the first forward inclined surface 32a is the bowl surface 8 in the front-rear direction of the urinal body 2. It is formed so that it faces inward rather than the front.
As shown in FIG. 4, the first forward inclined surface 32a is formed so as to extend forward from the vertical line V2 of the bowl surface 8 with respect to the inner end portion 32d of the first forward inclined surface of the bowl surface 8. Therefore, the first forward inclined surface 32a and the bowl surface 8 form an angle larger than 90 °, that is, an obtuse angle a1.

In FIG. 11, in the region of the first forward inclined surface 32a, the outer end portion 32e of the first forward inclined surface is arranged so as to be displaced forward with respect to the inner end portion 32d of the first forward inclined surface provided on the bowl surface 8. It is shown that the plane connecting the inner end portion 32d of the first forward inclined surface and the outer end portion 32e of the first forward inclined surface forms an inwardly inclined surface.
That is, as shown in FIGS. 4 and 11, in the present embodiment, in the first forward inclined surface 32a, the inner end portion 32d of the first forward inclined surface is L1 mm more than the outer end portion 32e of the first forward inclined surface. It is formed at a position on the rear side of the distance. For example, L1 mm is formed in a range larger than 0 mm and 4 mm or less. Therefore, the first forward inclined surface 32a forms a plane inclined inward toward the central plane P.

Further, as shown in FIG. 8, in the cross section in the direction orthogonal to the inclined surface of the shelf portion 32 in the upper end region of the shelf portion 32, the first forward inclined surface 32a is the inner end of the first forward inclined surface of the shelf portion 32. The portion 32d is formed by being located below the outer end portion 32e of the first forward inclined surface. Since the inner end portion 32d of the first forward inclined surface is located on the lower side (lower position) than the outer end portion 32e of the first forward inclined surface, the first forward inclined surface 32a is located in the vertical direction of the urinal body 2. It is formed so as to face the inside of the bowl surface 8. The first forward inclined surface 32a is formed so as to be inclined inward rather than horizontally.
As shown in FIG. 8, the first forward inclined surface 32a is formed so that the perpendicular line V1 orthogonal to the plane of the first forward inclined surface 32a extends toward the central plane P. Therefore, the first forward inclined surface 32a forms a flat surface inclined toward the inside of the bowl surface 8.

As shown in FIG. 11, the first forward inclined surface 32a is formed in the shelf portion 32 over a predetermined length below the upper end 32j of the shelf portion 32. For example, the first forward inclined surface 32a is formed from the upper end 32j of the shelf portion 32 to a length of about one-fourth of the length of the entire shelf portion 32. The first forward inclined surface 32a is formed in the shelf portion 32 between the upper end 32j of the shelf portion 32 and the upper end 32l of the reverse inclined surface 32b. For example, assuming that the total length L of the shelf portion 32 is 500 mm, the length of the reverse inclined surface 32b is formed to be about 125 mm.

As shown in FIG. 6, the second forward inclined surface 32c is inclined so as to be directed inward of the bowl surface 8, that is, to be directed inward so as to follow the inward facing bowl surface 8. The direction of the inclined surface (flat surface) of the second forward inclined surface 32c is inward in accordance with the direction of the inward facing bowl surface 8 (although the direction is slightly different from the inward direction of the nearby bowl surface 8), the bowl surface 8 (Inward facing). The fact that the second forward inclined surface 32c is directed to the inside of the bowl surface 8 means that the flat surface of the second forward inclined surface 32c is directed toward the central plane P inside the bowl surface 8. ..
As described above, the second forward inclined surface 32c is oriented toward the position on the central plane P. More specifically, the perpendicular line V3 orthogonal to the plane of the second forward inclined surface 32c extends inward in such a direction that it can intersect with the central plane P (the plane extending the central plane P). The second forward inclined surface 32c is formed inward.

As shown in FIG. 6, in the horizontal cross section in the lower region of the shelf portion 32, the second forward inclined surface 32c has the inner end portion 32f of the second forward inclined surface of the shelf portion 32 from the outer end portion 32g of the second forward inclined surface. Is also formed by being located on the rear side. Since the inner end portion 32f of the second forward inclined surface is located on the rear side of the outer end portion 32g of the second forward inclined surface, the second forward inclined surface 32c is the bowl surface 8 in the front-rear direction of the urinal body 2. It is formed so that it faces inward rather than the front.
As shown in FIG. 6, the second forward inclined surface 32c is formed so as to extend forward from the vertical line V4 of the bowl surface 8 with respect to the region near the inner end portion 32f of the second forward inclined surface of the bowl surface 8. There is. Therefore, the second forward inclined surface 32c and the bowl surface 8 form an angle larger than 90 °, that is, an obtuse angle a2. In one embodiment of the present invention, the angle a2 of the second forward inclined surface 32c is formed to be larger than the angle a1 of the first forward inclined surface 32a.

In FIG. 11, in the region of the second forward inclined surface 32c, the second forward inclined surface outer end portion 32g is arranged so as to be displaced forward with respect to the second forward inclined surface inner end portion 32f provided on the bowl surface 8. It is shown that the plane connecting the inner end portion 32f of the second forward inclined surface and the outer end portion 32g of the second forward inclined surface forms an inwardly inclined surface.
That is, as shown in FIGS. 6 and 11, in the present embodiment, in the second forward inclined surface 32c, the inner end portion 32f of the second forward inclined surface is L2 mm more than the outer end portion 32g of the second forward inclined surface. It is formed at a position on the rear side of the distance. For example, L2 mm is formed in a range larger than 0 mm and 8 mm or less. Therefore, the second forward inclined surface 32c forms a plane inclined inward toward the central plane P.
As shown in FIG. 11, for example, in the second forward inclined surface 32c, the distance L2 between the inner end portion 32f of the second forward inclined surface and the outer end portion 32g of the second forward inclined surface is the same as that of the first forward inclined surface 32a. The second forward inclined surface 32c is formed to be larger than the distance L1 of the above, and is formed so as to face more inward than the first forward inclined surface 32a.

Further, as shown in FIG. 10, in the cross section in the direction orthogonal to the inclined surface of the shelf portion 32 in the lower region of the shelf portion 32, the second forward inclined surface 32c is the inner end portion of the second forward inclined surface of the shelf portion 32. 32f is formed by being located below the outer end portion 32g of the second forward inclined surface. Since the inner end portion 32f of the second forward inclined surface is located on the lower side (lower position) than the outer end portion 32g of the second forward inclined surface, the second forward inclined surface 32c is located in the vertical direction of the urinal body 2. It is formed so as to face the inside of the bowl surface 8. The second forward inclined surface 32c is formed so as to be inclined inward rather than horizontally.
As shown in FIG. 10, the second forward inclined surface 32c is formed so that the perpendicular line V3 orthogonal to the plane of the second forward inclined surface 32c extends toward the central plane P. Therefore, the second forward inclined surface 32c forms a flat surface inclined toward the inside of the bowl surface 8.

As shown in FIG. 11, the second forward inclined surface 32c is formed in the shelf portion 32 over a predetermined length below the midpoint 32m of the shelf portion 32. For example, the second forward inclined surface 32c is formed from the midpoint 32m of the shelf portion 32 to a length of about half of the length L of the entire shelf portion. The second forward inclined surface 32c is formed in the shelf portion between the intermediate point 32m of the shelf portion 32 (the lower end of the reverse inclined surface 32b) and the lower end 32k of the shelf portion 32. For example, assuming that the total length L of the shelf portion is 500 mm, the length of the second forward inclined surface 32c is formed to be about 250 mm. The second forward inclined surface 32c is formed to have a length longer than that of the first forward inclined surface 32a.

Next, the reverse inclined surface 32b as shown in FIGS. 5, 7 and 9 is formed. The inverted inclined surface 32b is inclined so as to be directed outward with respect to the inward facing bowl surface 8. The term "outside" with respect to the inward-facing bowl surface 8 means that the direction of the surface of the reversely inclined surface 32b is directed toward the outside rather than the inside direction of the bowl surface 8. The perpendicular line V5 orthogonal to the surface of the reverse inclined surface 32b extends outward from the direction intersecting the central plane P passing through the center of the urinal body 2, that is, the direction not intersecting the central plane P. The reverse inclined surface 32b is formed so as to face outward. Therefore, the washing water is easy to get on the reverse inclined surface 32b, is hard to flow inward from the reverse inclined surface 32b, and is along the reverse inclined surface 32b on the reverse inclined surface 32b toward the lower side of the reverse inclined surface 32b. It is easy to flow.

As shown in FIG. 5, in the horizontal cross section in the region above the center of the shelf portion 32, the reverse inclined surface inner end portion 32h is located on the front side of the reverse inclined surface outer end portion 32i in the reverse inclined surface 32b. It is formed by. Since the reverse inclined surface inner end portion 32h is located on the front side of the reverse inclined surface outer end portion 32i, the reverse inclined surface 32b is formed so as to face outward from the front surface of the bowl surface 8. The reverse inclined surface 32b forms a surface in which the entire region of the shelf portion 32 itself from the inner end portion 32h of the reverse inclined surface to the outer end portion 32i of the reverse inclined surface is flatly inclined in the left-right direction (width direction). There is. Further, the reverse inclined surface 32b forms an outwardly inclined surface having a constant inclination from the inner end portion 32h of the reverse inclined surface to the outer end portion 32i of the reverse inclined surface in the horizontal cross section.
As shown in FIG. 7, in the reverse inclined surface 32b, the angle a3 formed by the perpendicular line V6 of the bowl surface 8 with respect to the inner end portion 32h of the inverted inclined surface 8 and the inverted inclined surface 32b is larger than 0 degrees and 30. It is formed at an angle that is less than or equal to a degree. More preferably, the reverse inclined surface 32b is formed at an angle such that the angle a3 formed by the perpendicular line V6 of the bowl surface 8 and the reverse inclined surface 32b is larger than 0 degrees and 15 degrees or less. For example, the inverted inclined surface 32b is formed so that the angle a3 formed by the perpendicular line V6 of the bowl surface 8 and the inverted inclined surface 32b is 15 degrees. Therefore, the reverse inclined surface 32b and the bowl surface 8 form an acute angle angle a4.

In FIG. 11, in the region of the reverse inclined surface 32b, the reverse inclined surface outer end portion 32i is arranged so as to be displaced rearward with respect to the reverse inclined surface inner end portion 32h provided on the bowl surface 8, and the reverse inclined surface inner end portion 32i is arranged. It is shown that the plane connecting the portion 32h and the outer end portion 32i of the reverse inclined surface forms an outwardly inclined surface.
That is, as shown in FIGS. 5 and 11, in the present embodiment, the reverse inclined surface 32b has the reverse inclined surface outer end portion 32i on the rear side of the reverse inclined surface inner end portion 32h by a distance of L3 mm. It is formed in a suitable position. For example, L3 mm is formed in a range larger than 0 mm and 5 mm or less. Therefore, the reverse inclined surface 32b forms a plane inclined outward without facing the central plane P.

Further, as shown in FIG. 9, in the cross section in the direction orthogonal to the inclined surface of the shelf portion 32 in the region above the center of the shelf portion 32, the reverse inclined surface 32b has a reverse inclined surface inner end portion 32h. It is formed by being located above the surface outer end portion 32i. Since the reverse inclined surface outer end portion 32i is located on the lower side (lower position) than the reverse inclined surface inner end portion 32h, the reverse inclined surface 32b is located outside the bowl surface 8 in the vertical direction of the urinal body 2. It is formed by being tilted toward it. The reverse inclined surface 32b is formed so as to be inclined outward rather than horizontally.
As shown in FIG. 9, the inverted inclined surface 32b has a perpendicular line V5 orthogonal to the surface of the inverted inclined surface 32b extending outward toward an outward direction away from the central plane P, that is, a direction not intersecting with the central plane P. The reverse inclined surface 32b is formed so as to face outward.

As shown in FIG. 11, the reverse inclined surface 32b is formed in the vicinity of the position where the upper end 32l thereof reaches the shelf portion 32 at both ends of the washing water discharged from the spreader 22 and spread in the left-right direction. The washing water discharged from the spreader 22 and spreading toward both left and right ends reaches the upper end of the reverse inclined surface 32b so as to collect, and easily flows into the inverted inclined surface 32b. Further, the lower end of the reverse inclined surface 32b is formed in the vicinity of the intermediate point 32m of the shelf portion 32. For example, the reverse inclined surface 32b is located at the midpoint 32m of the shelf portion 32 from the portion where the flow F1 near both ends of the washing water discharged from the spreader 22 and spread to the vicinity of the left and right side ends reaches on the shelf portion 32. It is formed up to the vicinity. For example, the reverse inclined surface 32b is formed in the shelf portion 32 on the upper side of the vicinity of the midpoint 32m of the shelf portion 32 over a length of about one-fourth of the length L of the entire shelf portion 32. For example, assuming that the total length L of the shelf portion 32 is 500 mm, the length of the reverse inclined surface 32b is formed to be about 125 mm.

The shelf portion 32 forms a first forward inclined surface 32a from above, forms a reverse inclined surface 32b below the lower end of the first forward inclined surface 32a (upper end 32l of the reverse inclined surface 32b), and forms a reverse inclined surface 32b. The second forward inclined surface 32c is formed on the lower side from the lower end 32m of the 32b. That is, the shelf portion 32 has a first forward inclined surface 32a forming a forward inclined surface on the upper end side, a reverse inclined surface 32b, and a second forward inclined surface 32c forming a forward inclined surface on the lower end side in order from above. is doing.

As shown in FIGS. 4, 5 and 6, the reverse inclined surface 32b is formed on the front side of the position of the first forward inclined surface 32a in the top view. Further, in the top view, the shelf portion 32 is formed in the order of the first forward inclined surface 32a, the reverse inclined surface 32b, and the second forward inclined surface 32c from the rear side to the front side of the urinal 1.

By arranging the reverse inclined surface 32b of the shelf portion 32 of the urinal 1 according to the embodiment of the present invention, it is possible to prevent the washing water from flowing down from the inverted inclined surface 32b toward the bowl surface 8 and to be on the shelf portion 32. Can be guided towards the area on the front side.
Further, by arranging the reverse inclined surface 32b on the upstream side of the second forward inclined surface 32c, the washing water that suppresses the flow from the reverse inclined surface 32b toward the bowl surface 8 can be discharged from the second forward inclined surface 32c. It can be gradually flowed down toward the bowl surface 8. Further, by arranging the reverse inclined surface 32b between the first forward inclined surface 32a and the second forward inclined surface 32c, the washing water is discharged from the first forward inclined surface 32a and the second forward inclined surface 32c to the bowl surface 8. Can be flushed over a wider area of.

The bowl surface 8 is connected so that the wall surface on the right side and the wall surface on the left side form an acute angle in the region of the front end portion 8e of the bowl surface 8. Since the front end 8e at the lower part of the bowl surface 8 protrudes forward at an acute angle, the front end 8e is easily positioned between the user's feet, and the user can easily approach the urinal 1 and use it. .. Therefore, the shelf portion 32 of the bowl surface 8 has an acute angle formed by the orientation of the right shelf portion 32 and the orientation of the left shelf portion 32 in the region near the front end portion 8e of the bowl surface 8. There is.

The shelf portion 32 of the bowl surface 8 further forms a region 36 without a shelf portion by dividing the shelf portion 32 into the right shelf portion 32 and the left shelf portion 32 in the region of the front end portion 8e of the bowl surface 8. It is provided with a recess 32n.
The recess 32n of the shelf portion 32 is formed on the tip end side of the center of the urinal body 2. The recess 32n of the shelf portion 32 divides the shelf portion 32 so as to be separated by a predetermined length. As shown in FIG. 2, the right side shelf tip portion 32o at the tip of the right side shelf portion 32 and the left side shelf portion tip portion 32p at the tip of the left side shelf portion 32 are formed so as to be separated from each other.

The region 36 of the recess 32n without a shelf is formed inside the right shelf tip 32o and the left shelf tip 32p (between the right shelf tip 32o and the left shelf tip 32p). ing. The area 36 without a shelf is a shelf that connects the tip 32o of the right shelf and the tip 32p of the left shelf almost flatly by a continuous flat surface, or the tip 32o of the right shelf and the left shelf. There is no shelf portion that extends and connects a part of the upper surface of the tip portion 32p to each other. Further, in the region 36 without the shelf portion, a relatively narrow shelf portion connecting between the right side shelf portion tip portion 32o and the left side shelf portion tip portion 32p is not formed. Therefore, in the region 36 without the shelf portion, a flat flow path is provided so as to merge the flow path formed on the tip portion 32o of the right shelf portion and the flow path formed on the tip portion 32p of the left shelf portion. The shelves to be formed are not formed.

The front end of the recess 32n without a shelf is formed by the inward facing surface 8f of the front end 8e of the bowl surface 8.
A shelf is not formed in the region 36 of the inward facing surface 8f of the front end 8e of the bowl surface 8 without a shelf, and the inner facing surface 8f is relatively flat from the upper edge 8g to the lower end 8h. The bowl surface 8 is formed. The bowl surface 8 may be formed in a relatively smooth curved shape from the upper edge portion 8g of the inward facing surface 8f to the lower end portion 8h so that there is no laterally protruding shelf portion.

Further, the left and right sides of the recess 32n without a shelf are formed by a left vertical wall 32q extending downward from the left shelf tip 32p and a right vertical wall 32r extending downward from the right shelf tip 32o. It is formed.
As described above, the region 36 without the shelf portion of the recess 32n forms a concave inner region sandwiched between the left vertical wall 32q and the right vertical wall 32r. The recessed bottom surface 36a forming the bottom surface of the recessed portion 32n without the shelf portion is formed by the bottom surface 8i of the bowl surface 8. The bottom surface 8i of the bowl surface 8 forms the bottom surface of the lowest portion of the bowl surface 8. The bottom surface 8i of the bowl surface 8 is a relatively flat and gently inclined curved surface extending laterally to the discharge port 10 at the lower portion of the bowl surface 8. The bottom surface 36a of the recess 32n can be formed at a relatively low position up to the bottom surface 8i of the bowl surface 8. As shown in FIG. 3, the bottom surface 36a of the recess and the bottom surface 8i of the bowl surface 8 are connected substantially flat to form a substantially flush surface (gentle curved surface).
Therefore, in the region 36 without the shelf portion, the position of the upper surface of the shelf portion of the right side shelf portion tip portion 32o and the left side shelf portion tip portion 32p on the left and right sides is relatively high from the height of the recess bottom surface 36a. ing. Therefore, between the upper surface of the shelf portion of the right side shelf portion tip portion 32o and the left side shelf portion tip portion 32p and the concave bottom bottom surface 36a, the upper surfaces of the right side shelf portion tip portion 32o and the left side shelf portion tip portion 32p are directed toward the center. The wash water flowing into the shelves receives gravity and flows down into the region 36 without the shelves, and is formed so as to join (collide) at a position lower than the upper surface of the tips of these shelves.
As a modification, the concave bottom surface 36a is not limited to the bottom surface 8i of the bowl surface 8, and may be formed as another surface at a position higher than the bottom surface 8i of the bowl surface 8.

When the tip of the conventional right shelf and the tip of the left shelf are connected at the front end, the merging position where the washing water flowing down the shelves on both the left and right sides joins is the urinal body 2. It is the connection position of the central shelf. At this time, the distance from the upper edge of the tip to the confluence position is the distance from the upper edge of the tip to the vicinity of the tip of the right shelf or the tip of the left shelf. On the other hand, in the present invention, when the region 36 without the shelf portion is formed between the right side shelf portion tip portion 32o and the left side shelf portion tip portion 32p, the shelf portions 32 on both the left and right sides flow down. The confluence position C1 at which the wash water merges is lower than the upper surfaces of the right side shelf tip portion 32o and the left side shelf portion tip portion 32p, and is a position inside the region 36 without the shelf portion. At this time, the distance from the upper edge portion 8g of the front end portion 8e to the merging position C1 is the distance L1. The distance L1 from the upper edge portion 8g to the merging position C1 is longer than the conventional distance from the upper edge portion to the merging position. Therefore, when the right side shelf tip portion 32o and the left side shelf portion tip portion 32p are to be arranged at relatively high positions, for example, the distance between the front end portion 8e and the right side shelf portion tip portion 32o and the left side shelf portion tip portion 32p. Even when the size is in the range of 10 mm to 60 mm, it is possible to prevent the washing water from spilling out beyond the front end portion 8e.

Since the washing water that joins (collides) from the left and right joins at a position lower than the upper surface of the tip of each shelf, even if the washing water scatters due to the collision of water, it gets over the front end 8e and is a urinal. It is difficult to jump out to the outside of the main body 2. Further, since the washing water forms a vertical downward flow from the upper surfaces of the right side shelf tip portion 32o and the left side shelf portion tip portion 32p toward the merging position C1, the merging washing water is formed. The water splashing from the urinal is also likely to occur downward, and it is difficult for the washing water to flow upward over the front end portion 8e to the outside of the urinal body 2. In the present invention, at the time of merging, the vertical and downward directional component of the flow of the merging wash water is larger than that at the time of merging as compared with the case where the conventional shelf portion is present.

Next, the operation of the urinal according to the embodiment of the present invention will be described.
First, the flow of the urinal cleaning operation by the urinal 1 according to the embodiment of the present invention will be described.
Normally, when the user stands in front of the urinal 1, the human body detection sensor 24 detects the presence of the user and sends the detection information to the control unit 26, and the control unit 26 recognizes the presence of the user. When the user finishes urinating on the bowl surface 8 of the urinal 1, the user who has finished urinating leaves from the front of the urinal 1, and the control unit 26 becomes a non-detection state, the user of the control unit 26 is the urinal 1. The control unit 26 starts cleaning the urinals, determining that the patient has left.

In the urine cleaning operation, the control unit 26 sends a control signal to the on-off valve 18 to open the on-off valve 18 to supply the washing water supplied from the water supply pipe 14 to the supply passage 20. The washing water supplied to the supply passage 20 is discharged from the spout portion 28 of the spreader 22 so as to spread from the central region of the bowl surface 8 to a wide range of left and right regions. FIG. 1 shows the flow F1 of the washing water discharged from the spout portion 28 and spread to the vicinity of the left and right side ends.

Since the spout 28 of the spreader 22 is formed so as to open relatively wide in a fan shape, the washing water spouted from the spout 28 is widely spouted from the upper left and right to the lower center of the bowl surface 8. Ru.
The washing water discharged from the spreader 22 can be guided from the central portion of the bowl surface 8 to the left and right end portions due to the shape of the concave curved surface having a relatively shallow depth of the front portion 8a of the bowl surface 8. When the amount of wash water is reduced due to the request for water saving, the wash water discharged from the spreader 22 is widely discharged in the left-right direction, but the amount of water is relatively small, the water film is thinly formed, and the water force is relatively high. Since it is weak, it is induced so that a water film can be effectively formed on the entire bowl surface 8.

The washing water discharged from the spreader 22 flows down on the front portion 8a of the bowl surface 8 so as to spread in the left-right direction, and reaches the shelf portion 32.
A part of the washing water flowing down to the first forward inclined surface 32a provided in the upper end region of the shelf portion 32 is flat as shown in FIG. 8 as shown by arrow F2. It flows on the shelf portion 32 toward the front side (reverse inclined surface 32b side) along the surface direction. On the other hand, the other portion of the washing water flowing down to the first forward inclined surface 32a spreads further downward to the bowl surface 8 along the inward inclination of the first forward inclined surface 32a as shown by the arrow F3. Flow down like. The first forward inclined surface 32a is located at a position higher than the reverse inclined surface 32b, and the washing water flows down from the first forward inclined surface 32a so as to spread on the bowl surface 8, so that it is on the lower side of the reverse inclined surface 32b. The bowl surface 8 can also be sufficiently washed with the washing water flowing down from the first forward inclined surface 32a. In this way, the areas on both sides of the bowl surface 8 can be extensively washed with the washing water flowing down from the first forward inclined surface 32a to the bowl surface 8.

As shown in the flow F1, the washing water flowing down to the reverse inclined surface 32b provided in the upper region of the shelf portion 32 is generally directed outward as shown by the arrow F4 as shown in FIGS. 5 and 9. It flows on the shelf portion 32 from the inclined reverse inclined surface 32b toward the downstream side of the shelf portion 32. Since the reverse inclined surface 32b is formed outward with respect to the bowl surface 8, the washing water existing on the reverse inclined surface 32b is difficult to flow toward the inner bowl surface 8. Therefore, it is suppressed that the washing water flows from the reverse inclined surface 32b toward the inner bowl surface 8. As shown by the arrow F4, the washing water tends to flow toward the downstream side (second forward inclined surface 32c side) of the shelf portion 32 toward the outer end portion 32i side of the reverse inclined surface.
Since the reverse inclined surface 32b is formed over a predetermined distance from the upper end 32l of the inverted inclined surface 32b that has flowed down the bowl surface 8 and easily collects the washing water to the intermediate point 32m, the flow of the washing water is indicated by the arrow F4. It is possible to easily form a flow directed to the lower front side even after the end of the reverse inclined surface 32b, which is directed in the direction shown in 1.

As shown in the flow F4, a part of the washing water flowing into the second forward inclined surface 32c from the lower end 32m of the reverse inclined surface 32b is a second as shown in FIGS. 6 and 10 as shown by the arrow F5. It flows on the shelf portion 32 toward the lower end 32k along the flat surface direction of the forward inclined surface 32c. The area near the front end on the front side of the bowl surface 8 can be washed over a wide area with the washing water flowing down the shelf portion 32 to the lower end 32k.
On the other hand, the other portion of the washing water flowing into the second forward inclined surface 32c spreads further downward to the bowl surface 8 along the inward inclination of the second forward inclined surface 32c as shown by arrow F6. Flow down like. In this way, the areas on both sides on the front side of the bowl surface 8 can be extensively washed with the washing water flowing down from the second forward inclined surface 32c to the bowl surface 8.

In this way, the washing water discharged from the spout portion 28 of the spreader 22 is discharged in the radial direction from the spreader 22, and then the shelf portion 32 moves the surface of the bowl surface 8 to the front side from the regions on both the left and right sides. It flows over a wide area so as not to generate a portion that cannot be washed up to the region, and good washing of the entire bowl surface 8 can be performed while flowing down the bowl surface 8.
Further, when the amount of washing water is reduced due to water saving, and the washing water discharged by the spreader 22 so as to spread in the left-right direction on the bowl surface forms a thin water film having a relatively weak water force and a relatively small amount of water. Even so, the shelf portion 32 allows the bowl surface 8 to flow over a wide area on the surface of the bowl surface 8 from the areas on both the left and right sides to the area on the front side so as not to create a portion that cannot be washed, and flows down the bowl surface 8 to the entire bowl surface 8. Can perform good cleaning.

In FIGS. 1 to 3, as shown in the flow F7, the washing water flowing into the recess 32n from the upper surface of the right shelf tip 32o of the right shelf 32 and the left shelf tip 32p of the left shelf 32. The washing water flowing into the recess 32n from the upper surface of the recess 32n is merged in the region 36 of the recess 32n without a shelf. Since the washing water flowing into the recess 32n does not have a shelf in the region 36 without the shelf, it freely falls diagonally downward from the right shelf tip 32o and the left shelf tip 32p. At this time, the flow of the washing water on the front side can satisfactorily wash the inward facing surface 8f of the front end portion 8e while flowing along the inward facing surface 8f of the front end portion 8e, and the shelf is placed on the inward facing surface 8f. Since the portion is not formed, it can flow down to the lower end portion 8h along the inward facing surface 8f.
Mainly, the washing water flowing down from the right side shelf tip portion 32o and the left side shelf portion tip portion 32p to the region 36 without the shelf portion is mixed so as to collide with each other at the confluence position (confluence region) C1 in the air slightly below. It flows down toward the bottom surface 36a.
Further, since a relatively large amount of washing water flows down along either the inward facing surface 8f of the recess 32n, the left vertical wall 32q or the right vertical wall 32r, the washing waters collide or merge during the fall. Even in such a case, water splashing or scattering due to a collision or the like is unlikely to occur, and even if it does occur, it is difficult to get over the front end portion 8e and jump out to the outside.

The washing water that merges at the confluence position C1 below the upper surface of the right shelf tip 32o and the left shelf tip 32p falls from the upper surface of the right shelf tip 32o and the left shelf tip 32p to the confluence position C1. Therefore, even when the washing water is scattered due to the merging, it is possible to make it difficult to get over the upper edge portion 8g of the front end portion 8e, and it is possible to suppress the washing water from being scattered from the bowl surface 8 to the outside. can.
The washing water flowing down from the upper surface of the right side shelf tip portion 32o and the left side shelf portion tip portion 32p into the region 36 without the shelf portion reaches the concave bottom bottom surface 36a. Since the bottom surface 36a of the recess is formed by the bottom surface 8i of the bowl surface 8, washing water is possible in the bowl surface 8 from the top surface of the right side shelf tip portion 32o and the left side shelf portion tip portion 32p to the bottom surface 8i of the bowl surface 8. It can flow down as low as possible, and the water landing position on the confluence position C1 and the bottom surface 36a of the recess is relatively low. Therefore, it is possible to prevent the scattering of the washing water, which tends to occur at the merging position C1 and the landing position of the bottom surface 36a of the recess, from reaching the outside beyond the upper edge portion 8g of the front end portion 8e.

The washing water flowing down the bowl surface 8 is discharged from the discharge port 10, passes through the drain trap pipeline 12 downstream of the discharge port 10, and flows further toward the drain pipe 13 downstream. When the spouting of a predetermined instantaneous flow rate from the spouting port 28 of the spreader 22 is continued for a certain period of time, the control unit 26 closes the on-off valve 18, ends the spouting of water from the spreader 22, and ends the urine washing operation. Let me.

Next, the action and effect of the urinal according to the first embodiment of the present invention described above will be described.
According to the urinal 1 according to the above-described embodiment, the amount of washing water is reduced as the water is saved, and the washing water discharged by the spreader 22 so as to spread in the left-right direction on the bowl surface 8 is relatively weak and relatively weak. Even in the case of forming a thin water film with a small amount of water, since the first forward inclined surface 32a of the shelf portion 32 is inclined so as to face the inside of the bowl surface 8, the washing water is directed inward. The area on both the left and right sides of the bowl surface 8 can be satisfactorily washed, and the reverse inclined surface 32b of the shelf portion 32 can be flushed toward the bowl surface 8 of the shelf portion 32 with respect to the inward facing bowl surface 8. Since it is inclined so as to be directed to the outside, it suppresses the flow of the washing water from the reversely inclined surface 32b toward the bowl surface 8, and guides the washing water toward the front area on the shelf portion 32. It is possible to clean the area on the front side of the bowl surface 8 satisfactorily. Therefore, the entire bowl surface 8 can be satisfactorily washed.

Further, in the urinal 1 according to the present embodiment, the upper ends of the reverse inclined surface 32b are formed in the vicinity of the positions where both ends of the washing water spreading in the left-right direction on the bowl surface 8 reach the shelf portion 32. Therefore, it is possible to prevent the washing water from flowing inward from the reverse inclined surface 32b and to guide the washing water on the shelf portion 32 toward the front region. Therefore, even when the water force of the washing water discharged from the spreader 22 becomes relatively weak, it is possible to easily guide the washing water toward the region on the front side. Therefore, even when the amount of washing water is reduced, the entire bowl surface 8 can be washed satisfactorily.

Further, in the urinal 1 according to the present embodiment, since the lower end of the reverse inclined surface 32b is formed in the vicinity of the intermediate point 32 m of the shelf portion 32, the washing water flows inward from the inverted inclined surface 32b. This can be suppressed, and a flow of wash water can be formed along the shelf 32 toward the front region up to the vicinity of the midpoint 32 m of the shelf 32, and the wash water can be directed toward the front region. Can be easily guided. Therefore, even when the water force of the washing water discharged from the spreader 22 becomes relatively weak, it is possible to easily guide the washing water toward the region on the front side. Therefore, even when the amount of washing water is reduced, the entire bowl surface 8 can be washed satisfactorily.

Further, in the urinal 1 according to the present embodiment, the reverse inclined surface 32b of the shelf portion 32 suppresses the washing water from flowing down from the reverse inclined surface 32b toward the bowl surface 8, and the reverse inclined surface of the shelf portion 32 is prevented from flowing down. The washing water flowing on the 32b is gradually flowed down toward the bowl surface 8 by the second forward inclined surface 32c formed from the lower end of the reverse inclined surface 32b to the lower end 32k of the shelf portion 32, and is on the front side of the bowl surface 8. The area of the bowl surface 8 can be satisfactorily washed, and the entire bowl surface 8 can be satisfactorily washed.

Further, in the urinal 1 according to the present embodiment, the shelf portion 32 is formed with a first forward inclined surface 32a, a reverse inclined surface 32b, and a second forward inclined surface 32c in order from above. The 1 forward inclined surface 32a can allow a part of the washing water to flow down along the bowl surface 8 so as to wash the bowl surface 8 from the upper part of the shelf portion 32. Further, the reverse inclined surface 32b can prevent the washing water from flowing inward from the reverse inclined surface 32b, and can guide the washing water toward the region on the front side on the shelf portion 32. Further, the second forward inclined surface 32c causes a part of the washing water guided to the front side by the reverse inclined surface 32b to flow down along the bowl surface 8 so as to wash the bowl surface 8 from the lower part of the shelf portion 32. be able to. Therefore, the region on the front side of the bowl surface 8 can be satisfactorily washed, and the entire bowl surface 8 can be satisfactorily washed.

Further, in the urinal 1 according to the present embodiment, the washing water can be discharged from the spreader 22 so as to spread in the left-right direction on the bowl surface 8, and the left and right water is discharged so as to spread in the left-right direction on the bowl surface 8. Even when the water force of the washing water near the edge is relatively weak, it is possible to easily guide the washing water toward the region on the front side. Therefore, even when the amount of washing water is reduced, the entire bowl surface 8 can be washed satisfactorily.

1 urinal 2 urinal body 3 lid 4 automatic urinal cleaning unit 6 storage room 7 front surface 8 bowl surface 8a front part 8b left end part 8c right end part 8d upper end 8e front end 8f inward facing surface 8g upper edge 8h lower end 8i Bottom surface 9 Wall mounting surface 10 Drainage port 12 Drainage trap pipeline 13 Drainage pipe 14 Water supply pipe 16 Flow control device 18 On / off valve 20 Supply passage 22 Spreader 24 Human body detection sensor 26 Control unit 28 Water discharge port 30 Supply passage 32 Shelf 32a 1 forward inclined surface 32b reverse inclined surface 32c second forward inclined surface 32d first forward inclined surface inner end 32e first forward inclined surface outer end 32f second forward inclined surface inner end 32g second forward inclined surface outer end 32h Reverse slope inner end 32i Reverse slope outer end 32j Upper end 32k Lower end 32l Upper end 32m Midpoint 32n Recess 32o Right shelf tip 32p Left shelf tip 32q Left vertical wall 32r Right vertical wall 36 No shelf Area 36a Recessed bottom surface a1 Angle a2 Angle a3 Angle a4 Angle C1 Confluence position G Floor surface L Total length L1 Distance L2 Distance P Central plane W Wall surface

Claims (3)

A urinal that cleans the bowl surface with wash water.
The bowl surface forming the surface for receiving urine and the bowl surface
It has a water discharge device provided in an upper region in the bowl surface and discharges washing water so as to spread in the left-right direction of the bowl surface.
The bowl surface extends while descending from the left and right side regions of the bowl surface to the front side region, and guides a part of the washing water flowing down on the left and right side regions of the bowl surface toward the front side region. Has a shelf and
The shelf portion is a region formed so that the angle formed by the bowl surface and the shelf portion at the outer end portion of the shelf portion is an acute angle in the horizontal cross section, and the shelf portion at the outer end portion of the shelf portion in the horizontal cross section. A urinal having a region formed so that the angle formed by the bowl surface and the shelf portion is an acute angle. In the region of the shelf portion formed so that the angle formed by the bowl surface and the shelf portion at the outer end portion of the shelf portion is obtuse in the horizontal cross section, the inner end portion of the shelf portion is formed in the horizontal cross section. The shelf is formed so that the angle between the bowl surface and the shelf is obtuse.
In the region of the shelf portion formed so that the angle formed by the bowl surface and the shelf portion at the outer end portion of the shelf portion is an acute angle in the horizontal cross section, the inner end portion of the shelf portion is formed in the horizontal cross section. The urinal according to claim 1, wherein the shelf portion is formed so that the angle formed by the bowl surface and the shelf portion is an acute angle. In the horizontal cross section, a region of the shelf portion formed so that the angle formed by the bowl surface and the shelf portion at the outer end portion of the shelf portion is an acute angle is located at the outer end portion of the shelf portion in the horizontal cross section. The urinal according to claim 1 or 2, which is provided at a position higher than a region formed so that the angle formed by the bowl surface and the shelf portion becomes an acute angle.

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