JP5483314B2 - Toilet body - Google Patents

Description

  The present invention relates to a toilet body.

  Patent Document 1 discloses a conventional toilet body. This toilet bowl body includes a toilet bowl portion and a rim water passage provided on the upper peripheral edge of the toilet bowl portion. A water discharge port for discharging washing water along the rim water passage is provided at the start end of the rim water passage. The rim water passage is formed with a peripheral wall part forming the upper inner peripheral surface of the toilet bowl part, and extending inward from the lower end of the peripheral wall part. And a shelf that allows the washing water to flow down along the inner surface of the toilet bowl that continues downward. The shelf is formed in an ascending gradient from the start end portion to the intermediate portion of the rim water passage, and is formed in a descending gradient from the intermediate portion to the end portion. In this toilet bowl main body, the wash water discharged from the spout can be spread over the entire rim water passage, and the wash water can flow down over the entire inner surface of the toilet bowl.

JP 2007-315061 A

  However, in the conventional toilet body, the vertical dimension of the peripheral wall portion of the rim water passage is the same as that of the rim water passage because the shelves are formed in a downward slope from the middle portion to the end portion of the rim water passage. As it approaches the terminal part from the intermediate part, it is formed larger. The wash water discharged from the water outlet flows along the inner peripheral surface of the stool part that continues downward while flowing through the upper surface of the shelf part. The amount of the cleaning water flowing on the upper surface of the shelf is gradually reduced, and the level of the cleaning water on the shelf is lowered. For this reason, as the upper end of the inner peripheral surface of the peripheral wall portion approaches the end portion of the rim water passage, the cleaning water discharged from the water discharge port does not come into contact and is not cleaned. Moreover, the area of the inner peripheral surface of the peripheral wall portion that does not come into contact with the cleaning water increases as it approaches the end portion of the rim water passage. For this reason, the splash of sewage adhering to the upper part of the inner peripheral surface of the peripheral wall portion of the rim water passage is not washed away, and the area becomes large, which may cause dirt to be noticeable or cause odors, etc. There is.

  The present invention has been made in view of the above-described conventional situation, and it is an object to be solved to provide a toilet bowl body that can perform toilet cleaning well and hardly accumulate dirt.

The toilet bowl body of the present invention includes a toilet bowl portion, a rim water passage provided at an upper peripheral edge of the toilet bowl portion, and a water outlet that is provided at a start end portion of the rim water passage and discharges wash water along the rim water passage. A toilet body provided with
The rim water passage is formed by extending from the lower end of the peripheral wall portion to the inner peripheral surface forming the upper inner peripheral surface of the toilet bowl portion, and circulating the wash water discharged from the water outlet to the upper surface, A shelf that allows some of the wash water to flow down along the inner surface of the toilet bowl that continues downward from the inside,
The peripheral wall portion is characterized in that the vertical dimension thereof is gradually reduced from the start end portion of the rim water passage to the vicinity of the end portion at the shortest.

In this toilet body, as the end of the rim water passage is approached, the amount of washing water discharged from the outlet and flowing through the upper surface of the shelf portion decreases, and the vertical direction of the peripheral wall portion decreases as the water level decreases. The dimensions of are gradually reduced. For this reason, the washing water can be brought into contact with the entire inner peripheral surface of the peripheral wall portion. Therefore, the inner peripheral surface of the peripheral wall can be cleaned well with the cleaning water discharged from the water outlet.

  Therefore, the toilet main body of the present invention can be cleaned well and it is difficult to collect dirt.

  The shelf may be formed with an ascending slope from the start end of the rim water passage to the vicinity in front of the end at least. In this case, the thickness of the collar part formed extending inward from the upper end of the peripheral wall part can be reduced. That is, compared with the case where the thickness of the flange portion is gradually increased in order to gradually reduce the vertical dimension of the peripheral wall portion from the beginning end portion of the rim water passage to the vicinity of the front end portion, The thickness of the part can be reduced. For this reason, the inner peripheral surface of the heel part formed in the substantially vertical direction in the toilet bowl is also thinned, and it is possible to reduce the adhesion of sewage splashes to the inner peripheral surface and to make the inner peripheral surface difficult to be stained. Further, by reducing the area of the inner peripheral surface of the collar portion, even if the inner peripheral surface becomes dirty due to the adhering of splashes of sewage, it can be made inconspicuous.

  The water outlets are a first water outlet and a second water outlet provided at two locations on the upper peripheral edge of the toilet bowl, and the rim water passage is formed to extend from the first water outlet to the second water outlet. The first rim water passage and the second rim water passage formed to extend from the second water outlet to the first water outlet. In this case, since the length of each rim water passage can be shortened, the wash water discharged from each water outlet can be circulated favorably from the start end portion to the end portion of each rim water passage. For this reason, since wash water can be made to flow down to the whole inner surface of a toilet bowl part, toilet bowl washing | cleaning can be performed favorably.

  In a state where the toilet bowl is viewed in plan, the first water outlet is provided at the upper peripheral edge of the front left and right when the toilet bowl is equally divided in the front-rear direction and the left-right direction. The second water outlet may be provided at the periphery. In this case, it is possible to shorten the length of each rim water passage through which the wash water discharged from each water outlet flows. Moreover, the wash water with a strong water immediately after being discharged from each water outlet is made to flow along the curved portion having a small curvature of the rim water passage. For this reason, the washing water flows well through the curved portion having the small curvature, and the washing water also flows through the curved portion having the large curvature thereafter. Therefore, it is possible to distribute the washing water satisfactorily from the start end to the end of each rim water passage. For this reason, washing water can be made to flow down to the whole inner surface of a toilet bowl part, and toilet bowl washing can be performed favorably.

  The inner peripheral surface of the peripheral wall portion and the upper surface of the shelf portion may be connected by an inclined surface facing inward and upward. In this case, since the centrifugal force acts on the washing water that circulates on the upper surface of the shelf, the circulated so as to be pressed against the inner peripheral surface of the peripheral wall portion. For this reason, wash water can be spread over the upper part of the inner peripheral surface of the peripheral wall portion along the inclined surface. Therefore, the inner peripheral surface of the peripheral wall portion can be cleaned well with the cleaning water.

  The rim water passage has a flange portion that extends inwardly from the upper end of the peripheral wall portion, and the inner peripheral surface and the lower surface of the flange portion can be connected by an inclined surface facing inward and downward. In this case, the area of the inner peripheral surface of the collar portion can be further reduced. For this reason, it can reduce that the splash etc. of sewage adheres to the internal peripheral surface of a collar part, and can make an internal peripheral surface difficult to get dirty. Further, by reducing the area of the inner peripheral surface of the collar portion, even if the inner peripheral surface becomes dirty due to the adhering of splashes of sewage, it can be made inconspicuous. In addition, since an inclined surface facing inward and downward is formed, it becomes easy to insert a cleaning tool such as a brush below the collar part, and the lower surface of the collar part, the inner peripheral surface of the peripheral wall part, and the upper surface of the shelf part are easy. Can be cleaned.

It is a top view of the toilet bowl body of an Example. It is sectional drawing of the toilet bowl main body of an Example. It is arrow XX sectional drawing of FIG. (A)-(E) are the fragmentary sectional views corresponding to arrow AA-arrow EE of FIG. It is arrow YY sectional drawing of FIG. It is arrow FF sectional drawing of FIG. It is arrow GG sectional drawing of FIG. It is a perspective view of the flush toilet bowl using the toilet bowl body of an example.

  An embodiment embodying the present invention will be described with reference to the drawings.

  The toilet bowl body 10 of the embodiment includes a toilet bowl 11 as shown in FIGS. 1 and 2. A first rim water passage 12 </ b> A and a second rim water passage 12 </ b> B are provided on the upper peripheral edge of the toilet bowl 11. When the toilet bowl 11 is viewed in plan, as shown in FIG. 2, when a virtual line L equally divided in the front-rear direction and a virtual line M equally divided in the left-right direction are drawn, A first spout 17A is provided on the upper peripheral edge of the toilet bowl 11 located on the left side of the toilet bowl 11 (front end T side of the toilet bowl 11) (left side when viewed from the front end T side of the toilet bowl 11). Is provided. Further, on the upper peripheral edge of the toilet bowl 11 located on the right side (right side when viewed from the front end T side of the toilet bowl 11) on the rear side (the rear end R side of the toilet bowl 11) from the virtual line L Is provided with a second water discharge port 17B. The first rim water passage 12A is formed to extend from the first water outlet 17A to the second water outlet 17B. Further, the second rim water passage 12B is formed to extend from the second water outlet 17B to the first water outlet 17A. Thus, since the 1st water outlet 17A and the 2nd water outlet 17B are provided in the position where the upper peripheral part of the toilet bowl part 11 opposes substantially, 12A of 1st rim water passages and the 2nd rim water passage 12B are used. It can be formed short.

  The first water discharge port 17A is an opening provided at the tip of the left rim water supply channel 17L. A left pipe 31L of the distribution pipe 30 is connected to the rear end portion of the left rim water supply path 17L. The 2nd water outlet 17B is an opening provided in the front-end | tip part of the right side rim water supply path 17R. A right pipe 31R of the distribution pipe 30 is connected to the rear end of the right rim water supply path 17R.

  As shown in FIG. 1, the distribution pipe 30 is formed at the rear end of the toilet body 10, and a part of the distribution pipe 30 is stored in the storage unit 21 in which the standing wall 21 </ b> A is raised at the peripheral part. The left pipe 31L and the right pipe 31R of the distribution pipe 30 are inserted into a pair of insertion ports 21L and 21R provided side by side at the lower part of the front wall 21A. The distribution pipe 30 has a connection port 30 </ b> A that opens upward in the storage portion 21. The connection port 30A is connected to a toilet bowl cleaning device to be described later. Thereby, the wash water supplied from the toilet bowl cleaning device is discharged from the water outlets 17A and 17B to the rim water passages 12A and 12B via the distribution pipe 30 and the rim water supply channels 17L and 17R.

  As shown in FIGS. 2 to 7, each of the rim water passages 12 </ b> A and 12 </ b> B includes a peripheral wall portion 13 that forms the upper inner peripheral surface of the toilet bowl portion 11, and a shelf that extends inward from the lower end of the peripheral wall portion 13. It has the part 14 and the collar part 16 extended and formed from the upper end of the surrounding wall part 13 inside.

  While the shelf part 14 distribute | circulates the wash water discharged from the 1st water discharge port 17A or the 2nd water discharge port 17B to the upper surface, along the inner surface of the toilet bowl part 11 which continues a part of the wash water below Let it flow down.

  The shelf 14 forming the first rim water passage 12A has an upward slope from the start end S1 of the first rim water passage 12A to the vicinity N before the end E1. That is, in the first rim water passage 12A, as shown in FIGS. 4 and 6, since the shelf portion 14 has an upward slope, the vertical dimension of the peripheral wall portion 13 is the same as that of the first rim water passage 12A. The distance from the start end S1 to the vicinity N near the end E1 is gradually reduced.

  As the wash water discharged from the first water discharge port 17A approaches the terminal end E1 of the first rim water passage 12A, the amount of water flowing through the upper surface of the shelf portion 14 decreases, and the water level decreases. According to this, since the dimension of the surrounding wall part 13 is formed gradually small, a wash water can be made to contact the whole inner peripheral surface of the surrounding wall part 13. FIG. For this reason, the internal peripheral surface of the surrounding wall part 13 can be wash | cleaned favorably with the wash water discharged from the 1st water discharge port 17A.

  Further, as shown in FIG. 2 and FIG. 5, the shelf 14 forming the second rim water passage 12B has an upward slope from the start end S2 to the end portion E2 of the second rim water passage 12B. Is formed. That is, since the shelf 14 has an upward slope in the second rim water passage 12B, the vertical dimension of the peripheral wall portion 13 extends from the start end S2 to the end portion E2 of the second rim water passage 12B. In between, it is gradually formed smaller.

  As the wash water discharged from the second water discharge port 17B approaches the terminal end E2 of the second rim water passage 12B, the amount of water flowing through the upper surface of the shelf portion 14 decreases, and the water level decreases. Accordingly, since the size of the peripheral wall portion 13 is gradually reduced, the cleaning water can be brought into contact with the entire inner peripheral surface of the peripheral wall portion 13. For this reason, the internal peripheral surface of the surrounding wall part 13 can be wash | cleaned favorably with the wash water discharged from the 2nd water discharge port 17A.

  Therefore, the toilet bowl body of the embodiment can be satisfactorily washed and can make it difficult to collect dirt.

  Moreover, since the shelf part 14 was made up-gradient in order to make the vertical dimension of the surrounding wall part 13 small gradually, the thickness of the collar part 16 can be made thin. For this reason, it can reduce that the splash of sewage etc. adhere to 16 A of inner peripheral surfaces of the collar part 16, and 16 A of inner peripheral surfaces can be made hard to become dirty. In addition, by reducing the area of the inner peripheral surface 16A of the collar portion 16, even if the inner peripheral surface 16A becomes dirty due to adhesion of splashes of sewage, it can be made inconspicuous.

  In addition, the first water discharge port 17A and the second water discharge port 17B are provided at two locations on the upper peripheral edge of the toilet bowl 11, and the first rim water passage 12A and the second rim water passage 12B are formed. For this reason, the length of each rim water passage 12A, 12B can be shortened, and the wash water discharged from each water outlet 17A, 17B is sent from the start end S1, S2 of each rim water passage 12A, 12B to the end E1. , E2 can be distributed well. Therefore, the washing water can flow down on the entire inner surface of the toilet bowl 11, and the toilet bowl can be washed well.

  In addition, the vertical dimension of the peripheral wall portion 13 is large in the vicinity of the second water discharge port 17B, but since the curvature is a curved portion with a small curvature, a large centrifugal force acts on the washing water, and the upper portion of the peripheral wall portion 13 The washing water can be spread until the peripheral wall portion 13 can be cleaned well.

  Also, wash water having a strong water force immediately after being discharged from each of the water discharge ports 17A and 17B is caused to flow along the curved portions having small curvatures of the respective rim water passages 12A and 12B. That is, since a curved portion having a small curvature is formed in the first half of each rim water passage 12A, 12B through which the washing water discharged from each water outlet 17A, 17B flows, a large centrifugal force acts on the washing water in this portion. The cleaning water is pressed against the inner peripheral surface of the peripheral wall portion 13, and the inner peripheral surface of the peripheral wall portion 13 can be cleaned well. Further, the washing water flows well through the curved portion having a small curvature, and the washing water also flows through the curved portion having a large curvature thereafter. Therefore, the wash water can be circulated favorably from the start end portions S1 and S2 to the end portions E1 and E2 of the rim water passages 12A and 12B. For this reason, wash water can be made to flow down to the whole inner peripheral surface of the toilet bowl part 11, and toilet bowl washing | cleaning can be performed favorably.

  As shown in FIG. 3 and FIG. 4, the inner peripheral surface of the peripheral wall portion 13 and the upper surface of the shelf portion 14 are connected by an inclined surface 15 facing the inner upper side. The inclined surface 15 is continuous with each of the inner peripheral surface of the peripheral wall portion 13 and the upper surface of the shelf portion 14 and is curved in a concave shape. Since the centrifugal force acts on the cleaning water flowing through the upper surface of the shelf portion 14, it flows so as to be pressed against the inner peripheral surface of the peripheral wall portion 13. For this reason, the wash water can be distributed along the inclined surface 15 to the upper part of the inner peripheral surface of the peripheral wall portion 13. Therefore, the inner peripheral surface of the peripheral wall portion 13 can be cleaned well with cleaning water.

  As shown in FIGS. 3 to 7, the flange 16 has an inner peripheral surface 16 </ b> A and a lower surface 16 </ b> B connected by a flat inclined surface 16 </ b> C facing inward and downward. The flange portion 16 formed in this way makes the area of the inner peripheral surface 16A smaller. For this reason, it can reduce that the splash of sewage etc. adhere to 16 A of inner peripheral surfaces of the collar part 16, and 16 A of inner peripheral surfaces can be made hard to become dirty. In addition, by reducing the area of the inner peripheral surface 16A of the collar portion 16, even if the inner peripheral surface 16A becomes dirty due to adhesion of splashes of sewage, it can be made inconspicuous. Further, since the inclined surface 16C is formed, it becomes easy to insert a cleaning tool such as a brush below the flange portion 16, and the lower surface 16B of the flange portion 16, the inner peripheral surface of the peripheral wall portion 13, and the upper surface of the shelf portion 14 are provided. Easy to clean.

  As shown in FIGS. 1, 3, and 5, the toilet body 10 includes a toilet drainage channel 18 that communicates with the downstream side of the toilet bowl 11, and an upper surface portion 20 that continuously extends rearward from the upper surface of the heel portion 16. have. The toilet drainage channel 18 is continuous from the lower end portion of the toilet bowl 11 and extends upwardly from the rear portion, and the downward flow channel 18B continues from the upper end portion of the upward flow channel 18A and extends downward. Is formed. The downstream end opening of the descending flow path 18 </ b> B communicates with the inflow port of the drain pipe 5 drawn from the floor surface via the connecting member 4.

  A cylindrical hollow portion 19 is formed in the toilet body 10 below the upper surface portion 20 located in front of the storage portion 21 and rearward of the toilet bowl portion 11. The lower end of the cavity 19 is opened at the upper end of the toilet drainage channel 18. An opening portion 19 </ b> A that penetrates the upper surface portion 20 is formed at the upper end of the cavity portion 19. An extended cavity portion 19 </ b> B extending rearward from the lower end rear portion of the cavity portion 19 is formed.

  The toilet body 10 is provided with a pair of first attachment holes 22 extending downward from the upper surface portion 20 and arranged side by side with a predetermined interval in the left-right direction. The positions of the first mounting holes 22 from the front end of the toilet body 10 and the dimensions between the first mounting holes 22 are defined in JIS standards as mounting holes for the toilet seat device. In addition, a pair of second mounting holes 23 are provided in the left and right ends of the upper surface portion 20 of the toilet body 10 behind the first mounting hole 22 and in front of the standing wall 21A on the front side.

  By using the toilet main body 10 configured as described above, a flush toilet equipped with a toilet cleaning device 40 and a suction device 50 can be configured as shown in FIG.

  In this flush toilet, a toilet cleaning device 40 having a cleaning tank 41 and a suction device 50 are arranged above the rear end of the toilet body 10. The toilet cleaning device 40 and the suction device 50 are covered with a cover 1 attached to the upper surface of the toilet body 10. A toilet seat 2 and a toilet lid 3 are pivotally supported at the lower front portion of the cover 1 so as to be rotatable.

The cleaning tank 41 has an outlet formed in the lower end surface, and the outlet is connected to the connection port 30 </ b> A of the distribution pipe 30. The suction device 50 is connected to the suction port of the lid member 52 via the suction path 51. The lid member 52 closes the opening 19A formed at the upper end of the cavity 19 in an airtight state. The suction passage 51 is formed by a first intake pipe 51A and a second intake pipe 51B. The lid member 52 is inserted from above into the opening 19 A, and is fixed in a state of being pressed by the fixing member 60 on a flat plate. The fixing member 60 is firmly fixed to the upper surface portion 20 of the toilet body 10 by the bolt B1 screwed into the first mounting hole 22 and the bolt B2 screwed into the second mounting hole 23.

  In the flush toilet constructed as described above, washing water flows out from the outlet of the washing tank 41 when toilet flushing is started. Thereby, the wash water is discharged from the water discharge ports 17A and 17B of the toilet body 10 to the rim water passages 12A and 12B. The washing water flows down along the inner surface of the toilet bowl 11 while being circulated in the rim water passages 12 </ b> A and 12 </ b> B in one direction, and is stored in the toilet bowl 11. Thereby, the wash water in the toilet bowl part 11 rises.

  Thereafter, the suction device 50 is driven, and the air in the toilet drainage channel 18 is sucked through the cavity 19 and the expansion cavity 19B. As a result, the wash water stored in the toilet bowl 11 is drawn into the toilet drainage channel 18, and the wash water in the toilet drainage channel 18 is increased to induce a siphon action. For this reason, in this flush toilet bowl, the siphon action can be surely induced and the toilet bowl can be washed well.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the embodiment, the vertical dimension of the peripheral wall portion of the rim water passage is gradually reduced by forming the shelf portion in an upward slope, but the shelf portion is formed horizontally and the thickness of the flange portion is reduced. By gradually increasing the thickness, the vertical dimension of the peripheral wall portion of the rim water passage may be gradually reduced.
(2) In the embodiment, two spouts are provided at two locations on the upper peripheral edge of the toilet bowl, but only one may be provided at one location.
(3) In the embodiment, the inner peripheral surface of the peripheral wall portion of the rim water passage and the upper surface of the shelf portion are connected by a curved inclined surface, but may be connected by a flat inclined surface facing inward and upward.
(4) In the embodiment, the collar portion is provided in the rim water passage, but the collar portion may not be provided.
(5) In the embodiment, the inner peripheral surface and the lower surface of the collar portion are connected by a flat inclined surface facing inward and downward. However, the inner peripheral surface and the lower surface of the collar portion are continuous with each other and curved in a convex shape. You may connect by the inclined surface.

  The present invention can be used for flush toilets.

DESCRIPTION OF SYMBOLS 10 ... Toilet body 11 ... Toilet bowl part 12A, 12B ... Rim water passage (12A ... 1st rim water passage, 12B ... 2nd rim water passage)
S1, S2 ... Start end (S1 ... Start end of first rim water passage, S2 ... Start end of second rim water passage)
E1, E2... End portion (E1... End portion of the first rim water passage, E2... End portion of the second rim water passage)
DESCRIPTION OF SYMBOLS 13 ... Peripheral wall part 14 ... Shelf part 15 ... Inclined surface 16 ... Eaves part 16A ... Inner peripheral surface 16B ... (in the eaves part) Lower surface 16C ... Inclined surface 17A, 17B ... Outlet (17A ... First discharge Water mouth, 17B ... second water outlet)

Claims (6)

A toilet body provided with a toilet bowl portion, a rim water passage provided at the upper periphery of the toilet bowl portion, and a water outlet provided at the start end of the rim water passage for discharging wash water along the rim water passage. There,
The rim water passage is formed by extending from the lower end of the peripheral wall portion to the inner peripheral surface forming the upper inner peripheral surface of the toilet bowl portion, and circulating the wash water discharged from the water outlet to the upper surface, A shelf that allows some of the wash water to flow down along the inner surface of the toilet bowl that continues downward from the inside,
The toilet body is characterized in that the peripheral wall portion is formed so that its vertical dimension gradually decreases from the start end portion of the rim water passage to the vicinity of the front end portion at the shortest.   2. The toilet body according to claim 1, wherein the shelf is formed with an ascending slope from the start end of the rim water passage to the vicinity in front of the end at least.   The water outlets are a first water outlet and a second water outlet provided at two locations on the upper peripheral edge of the toilet bowl, and the rim water passage is formed to extend from the first water outlet to the second water outlet. The toilet main body according to claim 1 or 2, wherein the toilet body is a second rim water passage formed to extend from the first rim water passage and the second water outlet to the first water outlet.   In a state where the toilet bowl is viewed in plan, the first water outlet is provided at the upper peripheral edge of the front left and right when the toilet bowl is equally divided in the front-rear direction and the left-right direction. The toilet main body according to claim 3, wherein the second water discharge port is provided at a peripheral edge.   The toilet body according to any one of claims 1 to 4, wherein the inner peripheral surface of the peripheral wall portion and the upper surface of the shelf portion are connected by an inclined surface facing inward and upward.   The rim water passage has a flange portion that is formed to extend inward from the upper end of the peripheral wall portion, and the inner peripheral surface and the lower surface of the flange portion are connected by an inclined surface facing inward and downward. The toilet body according to any one of claims 1 to 5, wherein

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