JP4961028B2 - Flush toilet - Google Patents

Description

  The present invention relates to a technique for flowing flush water in a toilet bowl into a bowl.

  Conventionally, by washing the bowl with bubble mixed washing water, it is possible to improve the washing effect by collision of bubbles in bubble mixed water, impact force due to high frequency vibration when bubbles break, etc., and increase washing power with a small amount of water It is proposed by Patent Document 1 and Patent Document 2 to enable this.

  Generally, when washing water is ejected from the washing water ejection section to the atmospheric pressure environment through the supply pipe, the washing water ejection section is ejected while expanding, and in particular, bubbles are generated compared to water. In the case of mixed washing water, since there are bubbles, the spread immediately after jetting from the washing water jetting part to the atmospheric pressure environment is larger than that of water alone. In the toilet bowl, when bubble mixed washing water is used instead of water simply as washing water, compared to water when jetted from the washing water jetting part to the rear end part of the side opening groove part formed on the lower surface side of the rim part The expanse immediately after jetting from the washing water jetting part to the atmospheric pressure environment is large, and the bubble mixed washing water spreads laterally immediately after jetting and flows down from the rear end part of the side opening of the side opening groove part more than necessary. Side opening groove provided in the circumferential direction on the lower surface side of In this way, the swirling flow of the bubbling mixed washing water cannot flow down from the side opening uniformly to the inner surface of the bowl at each circumferential portion of the side opening groove. There was a problem that it was not possible to wash uniformly with a swirling flow of washing water.

  That is, in the method of cleaning the bowl with the bubble mixed cleaning water, the inner surface of the bowl cannot be effectively and sufficiently simply by using the bubble mixed cleaning water as the cleaning water in the conventional toilet bowl cleaning with water.

JP 2001-279787 A Japanese Utility Model Publication No. 2-112774

  The present invention has been invented in view of the above-described conventional problems, and can stably inject bubble mixed washing water and eject it with a strong directivity toward the back side of the side opening groove. It is an object of the present invention to provide a flush toilet bowl.

  In order to solve the above-mentioned problem, the first invention is to form a laterally opening groove portion that opens inward toward the inside of the bowl on the lower surface portion of the rim portion provided at the upper end opening edge portion of the bowl over a substantially circumferential direction. And a cleaning water jet part for jetting the bubble mixed cleaning water is provided at the rear end of the bowl, and the bubble mixed cleaning water jetted from the cleaning water jet part flows along the side opening groove part and is located on the side of the side opening groove part. A flush toilet that flows into the bowl from the side opening and cleans the inside of the bowl, and causes the bubble mixed cleaning water to flow along the depth of the side opening groove between the washing water ejection part and the side opening groove. A guiding water channel constituting guiding means is provided, and a collision part is provided in the guiding water channel for causing the bubble mixed washing water ejected from the washing water jetting part to collide with the guiding water channel.

  According to a second aspect of the present invention, a side opening groove that opens inward toward the inside of the bowl is formed in the lower surface of the rim provided at the upper edge opening edge of the bowl over the substantially circumferential direction, and bubbles are formed at the rear end of the bowl. A cleaning water jet part for jetting mixed cleaning water is provided, and the bubble mixed cleaning water jetted from the cleaning water jet part flows along the side opening groove part and flows into the bowl from the side opening of the side opening groove part. A flush toilet for washing the inside, a guiding water channel that constitutes guiding means for causing bubble mixed washing water to follow the groove depth of the side opening groove portion between the washing water ejection portion and the side opening groove portion An auxiliary guide wall having a lower height on the front end side at the lower edge of the side opening at the start end of the side opening groove, and facing the groove depth of the side opening groove The rear end portion of the inner surface of a certain auxiliary guide wall is connected to the inner surface on one side of the outlet of the guide water channel. Both the outer surface of the auxiliary guide wall is continuously provided on the end portion of the lateral opening provided substantially circumferentially in the bowl, characterized by comprising.

  According to a third invention, in the second invention, the groove back portion of the side opening groove portion facing the auxiliary guide wall is formed as an inclined groove back portion that is inclined so as to be displaced outwardly toward the front in a plan view. Features.

  The present invention prevents bubble mixed washing water from colliding with the collision part in the guide water channel to fill the bubble mixed wash water into the guide water channel and prevent air from entering from the outside, and stably supplies the bubble mixed wash water to the guide water channel. Can be ejected with a strong directivity toward the back side of the side opening groove.

  Further, the present invention prevents the bubble mixed washing water immediately after being ejected from the outlet of the guide water channel from spreading laterally, thereby making it possible to obtain a swirling flow that continuously and annularly flows without interruption as a whole. The inside can be effectively cleaned with the bubble mixed cleaning water almost uniformly in the circumferential direction.

1 is an overall perspective view of the present invention. It is a partially exploded perspective view same as the above. It is sectional drawing of the front-back direction of a front part same as the above. It is sectional drawing of the left-right direction of front parts same as the above. It is a disassembled perspective view of a front part same as the above. It is a perspective view of a bowl same as the above. The bowl part same as the above is shown, (a) is a plan view, (b) is a side view, and (c) is a perspective view. It is a principal part enlarged plan view of a bowl part same as the above. It is a bottom view of a rim part same as the above. It is sectional drawing of the bowl which integrated the rim | limb part with the bowl part of the AA line of FIG. 8 same as the above. It is sectional drawing of the bowl which integrated the rim | limb part with the bowl part of the BB line of FIG. 8 same as the above. It is sectional drawing of the bowl which integrated the rim | limb part with the bowl part of CC line of FIG. 8 same as the above. It is sectional drawing of the bowl which integrated the rim | limb part with the bowl part of the DD line | wire of FIG. 8 same as the above. It is sectional drawing of the bowl which integrated the rim | limb part with the bowl part of the EE line of FIG. 8 same as the above. It is a schematic explanatory drawing which shows the mechanism used as bubble mixing washing water same as the above.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. The flush toilet 5 is provided with a bowl 1, and a rim portion 2 that protrudes toward the inside of the bowl 1 is provided at the upper end opening edge of the bowl 1.

  A side opening groove portion 3 is formed on the lower surface side of the rim portion 2 provided at the upper end opening edge of the bowl 1, and the side opening groove portion 3 opens sideways toward the inside of the bowl 1 over the entire length. A side opening 7 is formed.

  In the embodiment shown in the accompanying drawings, the main body of the flush toilet 5 provided with the bowl 1 is made of synthetic resin, but may be made of earthenware.

  In the embodiment shown in the accompanying drawings, as shown in FIGS. 1 and 2, the flush toilet 5 includes a front part 10 having a bowl 1, a rear part 11, and a support frame 12. The front part 10 and the rear part 11 constituting the main body 5 are both made of synthetic resin.

  The front part 10 includes a skirt portion 13 having a substantially C-shaped horizontal cross section, a bowl portion 14 that is fitted and integrated with the upper portion of the skirt portion 13, and a bowl portion 14 that is further fitted onto the bowl portion 14. And the rim portion 2 welded and integrated with the upper end edge portion of the skirt portion 13. Here, the bowl portion 14 and the rim portion 2 constitute a bowl 1 as shown in FIG.

  The rear part 11 includes an upper cover 16, an apparatus support case 17, a rear cover 18, an upper side cover 19, and a lower side cover 20, all of which are made of synthetic resin.

  The support frame 12 is made of metal, and the front part 10 is attached to the support frame 12 with a screw tool. The apparatus support case 17 of the rear part 11 has a hot water cleaning device 21a for local cleaning, a blower device 21b for local drying, A deodorizing device 21c for deodorizing the odor in the bowl 1, a washing water channel 21d, a toilet mixing device 21 such as a bubble mixing unit 21e that mixes bubbles with the washing water flowing in the washing water channel 21d to obtain bubble mixing washing water. The apparatus support case 17 is attached to and supported by the support frame 12 with a screw tool. The upper cover 16 is attached so as to cover the apparatus support case 17, and a toilet seat 22 and a toilet lid 23 are rotatably attached to the upper cover 16. The rear cover 18 is attached to the apparatus support case 17 and the support frame 12, the upper side cover 19 is detachably attached to the rear cover 18, and the lower side cover 20 is detachably locked to the upper side cover 19 for positioning. In this state, it is detachably attached to the support frame 12 by a magnet.

  FIG. 15 is a schematic configuration diagram in which the flush toilet 5 is provided with a bubble mixing portion 21e that mixes bubbles with washing water flowing in the washing water flow path 21d to obtain bubble mixed washing water. In FIG. 15, an ejector portion 60 for taking air into the washing water flow path 21d, a bubble subdividing portion 61 for subdividing the air taken into the water into countless bubbles to obtain bubble mixed washing water, In the embodiment of FIG. 15, a cleaning water flow is provided at the tip of the branch path 65 including the circulation path 64 for circulating the detergent in the detergent tank 62 containing the liquid detergent by the circulation pump 63 and the valve 66 branched from the circulation path 64. The bubble mixing portion 21e is configured by communicating between the ejector portion 60 and the bubble subdividing portion 61 of the path 21d.

  That is, when the water that is the washing water is caused to flow in the washing water flow path 21d by the tap water by opening the electromagnetic valve 67 in a state where the circulation pump 63 is stopped (in this case, the valve 66 is closed), the ejector unit 60 Air is forcibly taken into the water flowing in the washing water channel 21d, and the air taken into the water is further subdivided into countless bubbles by the bubble subdivision unit 61 (for example, the average particle diameter is about several millimeters). The bubbles are mixed into the bubbles to be washed into the bowl 1 from the end of the washing water channel 21d, and the high frequency when the bubbles collide with the bubbles in the bowl 1 and the bubbles break. Effective cleaning is performed with a small amount of water while increasing the cleaning effect by impact force caused by vibration.

  In addition, when the electromagnetic valve 67 is opened and the circulation pump 63 is turned on (in this case, the valve 66 is opened), air is taken into the washing water channel 21d as described above, and air is taken in as described above. The water in a state where the liquid detergent is supplied into the produced water and the liquid detergent and air are mixed is subdivided into countless bubbles by the bubble subdivision unit 61. In this case, since the liquid detergent, which is a surfactant, is mixed, the surface tension of the cleaning water in which air and liquid detergent are mixed in the water is lowered, and thereby, innumerable innumerable parts are generated by the shear force in the bubble subdividing part 61. When subdividing into bubbles, the bubbles can be subdivided into bubbles having a smaller diameter (for example, an average particle size of about 60 μm) than when no liquid detergent is mixed. It spouts out in the bowl 1 from an edge part. In this case, since bubbles contained in the cleaning liquid are small and contain a liquid detergent, when water is stored in the bowl 1, micrometer-sized air bubbles containing a surfactant in the water line portion of the bowl 1 in contact with the stored water. The bowl 1 can effectively clean the vicinity of the water line. In addition, micrometer-sized bubbles containing a surfactant are less likely to break than bubbles with an average particle size of several millimeters, and can be adhered to the inner surface of the bowl 1 for a long time. It will be possible.

  As described above, as the bubble mixed cleaning liquid, in the embodiment, two types of jetting of the bubble mixed cleaning liquid in which bubbles of only air are mixed and the bubble mixed cleaning liquid in which bubbles including liquid detergent (surfactant) and air are mixed. In cleaning the bowl 1, when flushing the pooled water containing the filth accumulated in the bowl 1, the bubble mixed cleaning liquid in which bubbles of only air are mixed is ejected and washed. When the water is stored in the bowl 1 up to a certain water level, a mixed liquid for cleaning bubbles mixed with bubbles including a liquid detergent (surfactant) and air is ejected and stored.

  Of course, in the present invention, in the whole process of washing from the flushing to the pooled water, it is possible to just eject the bubble mixed washing liquid in which bubbles of only air are mixed as the bubble mixed washing liquid, or the entire washing from the washing to the pooled water. In the process, the bubble mixed cleaning liquid in which bubbles including a liquid detergent (surfactant) and air are mixed may be ejected.

  A drain tube portion 14a is formed at the bottom of the bowl portion 14, and one end portion of the trap is connected to the drain tube portion 14a. In this embodiment, the trap is of a turn trap type, and is constituted by a flexible trap cylinder 90 (shown in FIG. 15). The trap cylinder is rotated upward by rotating the trap cylinder by a motor (not shown). The trap structure can be selected between a U-shaped trap structure state and a substantially inverted L-shaped trap structure release state. Normally, the trap cylinder 90 has an upward U-shape. The trap structure is in a state where water has accumulated in the lower part of the bowl part 14, the drain cylinder part 14a, and the trap cylinder 90. In this state, stool and urine are performed. As will be described later, the cleaning water is allowed to flow, and the trap cylinder 90 is rotated to release the trap structure so that the waste water is drained together with the filth. The flexible trap cylinder, motor, and the like are housed in a trap case 34, and the trap case 34 is attached to a metal support frame 12.

  The cleaning nozzle 24 provided in the hot water cleaning device 21a is provided on the inner peripheral surface of the rear portion of the rim portion 2 with a cleaning nozzle insertion / removal opening 25 for taking it in and out of the bowl 1 and is ejected from the duct front end of the blower device 21b. Blowing openings 26 for blowing hot air or cold air into the bowl 1 are provided side by side, and the lower surface of the rear end portion of the rim 2 is provided with the above-mentioned cleaning nozzle outlet opening as shown in FIG. LED 25 for brightly illuminating the inside of bowl 1 while providing deodorizing opening 27 for inhaling the odor in bowl 1 communicating with deodorizing device 21c at a position shifted in the left-right direction from section 25 and air opening 26 A light emitting opening 29 is provided for the light emitting unit 28 to face.

  In the bowl 1, a side opening groove 3 is formed in a portion surrounded by a lower surface of the rim portion 2 and an upper surface of the upper outer peripheral portion of the bowl portion 14.

  The end of the cleaning water flow path for supplying the bubble mixed cleaning water is fitted into one end of the rear of the bowl 1 in the left-right direction (one end in the left-right direction at the rear of the bowl 14 in the embodiment shown in the accompanying drawings). The washing water ejection part 4 is for ejecting mixed washing water.

  In addition, one side end portion in the left-right direction of the rear end portion of the side opening groove portion 3 from the washing water jetting portion 4 at the rear portion of the bowl 1 (one side end in the left-right direction of the rear end portion of the side opening groove portion 3). A guiding water channel 41 constituting the guiding means 40 is formed between the first end portion 3a).

  Then, the bubble mixed washing water ejected from the washing water jetting portion 4 is passed through the guide water channel 41 to one end portion in the left-right direction of the rear end portion of the side opening groove portion 3 (this portion becomes the start end portion 3a of the side opening groove portion 3). Is directed to the back side of the groove and supplied to the start end portion 3a of the side opening groove portion 3, and thus the bubble mixed washing water supplied to the start end portion 3a of the side opening groove portion 3 is The swirl flow flows in the circumferential direction from the start end portion 3 a of the side opening groove 3 to the inside of the side opening groove 3. In this way, when the bubble mixed cleaning water flows in the side opening groove portion 3 as a swirling flow, a part of the cleaning water gradually enters the bowl 1 from the lower edge portion of the side opening 7 of the side opening groove portion 3. As shown by the arrow in FIG. 7A, the flow flows as a swirling flow, and the inside of the bowl 1 is washed by the swirling flow.

  The guide water channel 41 has a substantially trapezoidal shape in plan view as shown in FIGS. 7A, 7C, and 8, and the lateral width (lateral width) gradually becomes narrower toward the front end side in the flow direction. The tip is an outlet 41a. At least the rear part inside the guide water channel 41 has a larger cross section (cross section orthogonal to the flow direction) than the cross section (cross section orthogonal to the flow direction) of the washing water ejection section 4. In addition, of the left and right side walls 42 and 43 of the guide water channel 41, the distal end portion of the outer side wall 42 is made to be flush with the groove back surface 50 of the start end portion 3 a of the side opening groove portion 3. The inner side wall 43 of the left and right side walls 42 and 43 is inclined so as to approach the outer side of the bowl 1 toward the tip side in a plan view.

  Therefore, when the bubble mixed washing water ejected forward from the washing water ejection part 4 passes through the inside of the guiding water channel 41, it is guided to the inner side wall 43 and directed toward the inner side of the groove of the side opening groove part 3. A flow having strong directivity is jetted into the start end portion 3a of the side opening groove portion 3, and the bubble mixed washing water tends to spread immediately after jetting from the washing water jetting portion 4. By guiding as a flow having strong directivity toward the groove back side of the side opening groove 3, the bubble 1 is mixed and washed more than necessary from the side opening 7 of the start end 3 a of the side opening groove 3 into the bowl 1. The water is prevented from flowing down.

  Further, the guiding water channel 41 has at least the vertical width of the outlet 41a portion longer than the horizontal width. In the embodiment shown in the accompanying drawings, as shown in FIGS. 10 and 11, the vertical width is made longer than the horizontal width in a region ahead of the central portion in the front-rear direction of the guide water channel 41. As a result, the bubble mixed washing water ejected from the outlet 41a of the guide water channel 41 flows with a strong directivity toward the back side of the side opening groove 3 in a state where the cross-sectional shape is narrow and vertically long. Further, immediately after jetting from the washing water jetting part 4, the bubble mixed washing water spreads and the bubble mixed washing water does not flow more than necessary into the bowl 1 at the start end portion of the side opening groove 3.

  At least at the upper end of the outlet 41a portion of the guide water channel 41, an overflow portion 45 having a wider width than the width of other portions of the outlet 41a portion is formed. In the embodiment shown in the accompanying drawings, as shown in FIGS. 10, 11, and 12, an overflow portion 45 is formed at the upper end portion over the entire length of the guide water channel 41 in the front-rear direction. If the bubble mixed washing water has different foaming states, the volume of the bubble mixed washing water (water + bubble) is different, and in the case of excessive bubble mixed washing water, it is caused to overflow into the wide overflow part 45 provided at the upper end and having a wide width. Thereby, it can eject to the rear-end part of the side opening groove part 3 without imposing a burden on an apparatus.

  As shown in FIG. 8, a collision part 46 made of a projection for colliding the bubble mixed washing water ejected from the washing water ejection part 4 is provided in the guide water channel 41, and the bubble mixed washing water collides in the guidance channel 41. By colliding with the portion 46, the bubble mixing washing water is filled in the guiding water channel 41 to prevent air from entering from the outside, and the bubble mixing washing water is stably guided by the guiding water channel 41 to the side. It can be ejected with a strong directivity toward the groove back side of the opening groove 3.

  As shown in FIGS. 6, 8, 13, and 14, an auxiliary guide wall 47 having a lower height on the front end side is formed at the lower edge of the side opening 7 of the start end 3 a of the side opening groove 3. It is erected.

  The inner surface of the auxiliary guide wall 47 (the surface facing the groove depth of the side opening groove portion 3) is continuously provided so that the rear end portion thereof is flush with the inner surface of the outlet 41a of the guide water channel 41. The outer surface of the auxiliary guide wall 47 (the surface facing the inside of the bowl 1) is flush with the groove bottom surface of the circumferential end that is the circumferential end of the side opening groove 3 provided in the bowl 1 in the substantially circumferential direction. ing.

  By providing the auxiliary guide wall 47 as described above, it is possible to prevent the bubble mixed cleaning water immediately after being ejected from the outlet 41a of the guide water channel 41 from spreading laterally by the auxiliary guide wall 47. The bubble mixed washing water ejected from the ejection part 4 is guided by the guiding means 40 toward the groove back side of the start end part 3 a of the side opening groove part 3, and from the start end part 3 a of the side opening groove part 3 to the side opening groove part 3. While flowing as a swirl flow in the circumferential direction, the swirl flow flows into the bowl 1 little by little from each circumferential portion of the side opening, and the inside of the bowl 1 is washed evenly in the circumferential direction. At this time, the end of the swirling flow of the amount of water that the swirling flow flowing in the circumferential direction through the side opening groove portion 3 reaches the end portion 3b of the side opening groove portion 3 is reduced along the outer surface of the auxiliary guide wall 47, The guide wall 47 is gradually lowered. Then, the end of the swirling flow is ejected from the outlet 41a of the guide water channel 41 and gradually merges with the start end of a new swirling flow flowing inside the auxiliary guiding wall 47, and as a whole, continuously without interruption. A swirling flow that flows in an annular shape can be obtained.

  Since a swirling flow that continuously flows in an annular shape can be formed without interruption in this way, the inside of the bowl 1 can be effectively cleaned with the bubble mixed cleaning water almost uniformly in the circumferential direction.

  As shown in FIGS. 7A, 7C, and 8, the groove inner surface of the side opening groove portion 3 facing the auxiliary guide wall 47 is inclined to the outer side of the inclined groove so as to be displaced outwardly in a plan view. 48, the bubble mixed washing water immediately after being ejected from the outlet 41a of the guide water channel 41 is prevented from spreading laterally by the auxiliary guide wall 47, and at the same time, the bubble mixed washing water by the auxiliary guide wall 47 is Therefore, it is possible to obtain a flow in which the directivity toward the groove back side of the side opening groove portion 3 is enhanced by the presence of the inclined groove back portion 48 while preventing the spread.

DESCRIPTION OF SYMBOLS 1 Bowl 2 Rim part 3 Side opening groove part 4 Washing water ejection part 5 Flush toilet 7 Side opening 40 Guide means 41 Guide water channel 42 Outer side wall 43 Inner side wall 45 Overflow part 46 Colliding part 47 Auxiliary guide wall 48 Inclined groove back Part

Claims (3)

  A side opening groove that opens inward toward the inside of the bowl is formed on the lower surface of the rim provided at the upper edge opening edge of the bowl over the substantially circumferential direction, and bubble mixed cleaning water is jetted to the rear end of the bowl. A flush toilet having a washing water jetting part, in which the bubble mixed washing water jetted from the washing water jetting part flows along the side opening groove part and flows from the side opening of the side opening groove part into the bowl to wash the inside of the bowl A guide water channel is provided between the cleaning water jetting part and the side opening groove part to constitute a guiding means for guiding the bubble mixed cleaning water along the groove depth of the side opening groove part. A flush toilet comprising a collision part for colliding the bubble mixed washing water ejected from the washing water ejection part.   A side opening groove that opens inward toward the inside of the bowl is formed on the lower surface of the rim provided at the upper edge opening edge of the bowl over the substantially circumferential direction, and bubble mixed cleaning water is jetted to the rear end of the bowl. A flush toilet having a washing water jetting part, in which the bubble mixed washing water jetted from the washing water jetting part flows along the side opening groove part and flows from the side opening of the side opening groove part into the bowl to wash the inside of the bowl And a guide water channel that constitutes a guide means for bringing the bubble mixed cleaning water along the groove depth of the side opening groove portion between the cleaning water jetting portion and the side opening groove portion, An auxiliary guide wall having a lower height at the front end side at the lower edge portion of the side opening at the start end of the opening groove, and facing the groove depth of the side opening groove, is the inner surface of the auxiliary guide wall. The rear end of the guide channel is connected to the inner surface of one side of the outlet of the guide water channel, Flush toilet bowl which is characterized by comprising an outer surface of the wall is continuously provided on the end portion of the lateral opening provided substantially circumferentially to the bowl. 3. The flush toilet according to claim 2, wherein the groove back portion of the side opening groove portion facing the auxiliary guide wall is formed as an inclined groove back portion that is inclined so as to be shifted outward in the front direction in plan view.

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