JP3678247B2 - Flush toilet - Google Patents

Description

The present invention relates to a flush toilet that flushes fresh wash water by passing it through a toilet bowl that stores stored water.

  There are various methods for cleaning the toilet bowl by passing the cleaning water through the toilet bowl, and the cleaning water flow is widely used from the hollow rim provided on the upper edge of the toilet bowl. In this method, a hollow rim is used as a water passage, and the cleaning water is ejected substantially vertically from a U-shaped hole formed so as to surround the ball portion over a hole or a hole scattered at the lower end of the rim. .

Another method has also been proposed in which cleaning water is ejected from the upper edge of the ball surface (Patent Document 1).
International Publication WO98 / 16696

  In the conventional cleaning method described above, new cleaning water is stored in advance in a tank, and the cleaning water in the tank is supplied to the rim water passage. Washing water supply is also performed directly from a water pipe or the like without using such a storage tank. However, this direct water supply has not yet been applied to the washing water ejection method from the upper edge of the ball portion for the reason described below.

  When cleaning water is directly supplied to the rim water passage from a water pipe or the like, the cleaning water is ejected vigorously from the lower end of the rim almost vertically with tap water source pressure. Since the jetted cleaning water hits the surface of the ball part and immediately reaches the stored water, the cleaning water may scatter to the outside of the ball due to a collision with the surface of the ball part or the stored water surface. In addition, there is a problem that the sound accompanying the collision of the cleaning water increases. Since there are such problems, it has not been assumed in the past in the manufacture of flush toilets that direct water supply from a water pipe or the like is applied to the flush water ejection system from the upper edge of the ball section. It was the current situation.

  By the way, other methods for ejecting cleaning water from the upper edge of the ball surface proposed in Patent Document 1 have only been able to use a storage tank for the reasons described above.

The present invention has been made to solve the above-described problems, and an object of the present invention is to improve the function in the case where the toilet bowl is washed by passing washing water through the toilet bowl section.

  In order to solve the above-described problems, the present invention is a flush toilet that performs flushing of toilet bowl by passing fresh wash water through a toilet bowl portion for storing stored water, and substantially over the entire circumference of the ball portion. A guide recess formed in a groove shape in a substantially horizontal direction, and a rim ejection nozzle that is mounted and fixed to a lateral upper portion of the ball portion and that ejects the cleaning water toward the guide recess in communication with the guide recess. And the washing water jetted from the rim ejection nozzle, the pressure flushing water from an external pressurized water supply source being introduced as the new washing water, and water guiding means for guiding the washing water to the rim ejection nozzle However, a swirl flow is caused in a substantially horizontal direction along the upper edge of the ball surface of the ball portion while being guided by the guide recess, and the entire circumference of the upper edge of the ball surface is made to circulate.

  The shape of the rim portion is preferably overhanged so as to cover the rim ejection nozzle.

  Washing water ejected from the rim ejection nozzle ... In particular, if pressurized washing water is guided to the rim ejection nozzle by a pipe member, stabilization of the ejection direction, stabilization of the swivel in the substantially horizontal direction, washing water Higher cleaning performance can be achieved by stabilizing the jet shape such as the jet velocity, simplifying the formation of the pressurized cleaning water path, and uniformizing the path area of the cleaning water path.

  The pressurized water supply here means a generic name of those that exhibit a water supply pressure (source pressure) that cannot be obtained with a toilet-mounted washing water storage tank having a water head pressure of about 250 mm. Therefore, the pressurized water supply source of the present invention is capable of supplying cleaning water with a higher water head pressure than a toilet-mounted type, such as a house roof or a building roof, in addition to a pressurized water pipe such as a water pipe. Including things.

  The flush toilet of this invention which has said structure can also take the following aspects. That is, it is possible to prepare a plurality of rim ejection nozzles at the upper edge of the ball surface, and the water guiding means guides the pressurized cleaning water to the plurality of rim ejection nozzles. By doing so, the pressurized cleaning water ejected from the respective rim ejection nozzles performs ball surface cleaning with high energy during the turning process, so that the cleaning ability can be further enhanced. In this case, each rim ejection nozzle may be prepared so as to cause a reverse turning behavior in addition to the case where the same turning behavior occurs.

  In addition, a siphon trap pipe is provided as a drain pipe from the toilet bowl, and the inflow of the accumulated water into the siphon trap pipe is caused independently of the washing water jet from the rim jet nozzle. As described above, it is also possible to have a ball portion water passing means for passing fresh flush water through the toilet bowl portion. In this way, the flush water flowing into the toilet bowl part by the ball part water flow means uniquely causes the stored water to flow into the siphon trap pipe, so that the suction of the wash water into the siphon trap pipe can be ensured and extended. In this case, the washing water can be quickly filled in the siphon trap pipe by sucking the washing water. Therefore, it is possible to accelerate the induction of the siphon action by the siphon trap pipe, and to increase the discharge efficiency of the filth that accumulates or settles in the accumulated water. In addition, the filth which floats in the stored water is made into a mixed state in the stored water when the wash water that has caused the swirling behavior reaches the stored water.

  This ball section water passing means allows the cleaning water to flow toward the pipe entrance of the siphon trap pipe, or allows the cleaning water to pass through the toilet bowl section from a position lower than the surface of the stored water. Washing water can be passed through the water so as to cause the swirling of the same direction as the swirling direction of the washing water ejected from the rim ejection nozzle to the stored water. If it does in this way, it is beneficial to the induction promotion of the siphon action through the quick filling of the washing water in the siphon trap pipe described above. In particular, in the case of performing washing water flow from the position lower than the surface of the stored water or performing cleaning water flow that causes the swirling of the stored water, the filth mixed or settled in the stored water is pushed directly into the trap pipe. Therefore, the discharge efficiency of these filths can be further increased.

  Moreover, this ball part water-passing means can also be used to pass the pressurized washing water from the pressurized water supply source to the toilet bowl part. In this way, cleaning water flowing at a high pressurized water supply source pressure is beneficial in promoting the induction of siphon action through filling of the cleaning water in the siphon trap line, and also contaminates or settles in the stored water. The discharge efficiency can be further improved. Further, since the water supply source of the ball part water passing means and the water guiding means can be made common, the construction work on the site, that is, the work of connecting the water supply path from the water source to the ball water passing means and the water guiding means can be simplified. Simplification of the pipe line configuration can be achieved. Of course, the water supply source may be different, and the ball portion water passing means may receive water from the flush water tank mounted on the toilet bowl. By doing so, even if the pressurized water supply source is small and the pressurized washing water can be supplied only to the water guiding means for regional reasons, the ball section water passing means can be supplied with no trouble. Therefore, the area where the flush toilet of the present invention can be installed can be expanded.

  In this way, in passing the pressurized cleaning water from the ball section water passing means to the toilet bowl section, the rim ejection nozzle of the pressurized cleaning water passing through the ball section water passing means and the pressurized cleaning water passing through the water guiding means. It is possible to have a control means for controlling water flow to the water. Then, the ball section water passing means is branched from the water guiding means, and the control means is disposed at the branching point, or the control means is connected to the pressurized washing water flowing through the water guiding means and the ball section water flowing. It is possible to switch and control the pressurized washing water passing through the means in this order. In this way, by controlling the flow of pressurized washing water passing through the water guiding means and the pressure washing water passing through the ball section water passing means, for example, by sequentially switching both washing water passing water, The above effects can be exhibited synergistically.

  In addition, if the total amount of drained wash water discharged to the outside of the toilet bowl when the toilet bowl is cleaned is about 7 liters or less, it is possible to satisfy the demand for water saving. In this way, even if the total amount of discharged cleaning water is regulated, the pressurized cleaning water flow by the water guiding means with the turning described above and the pressurized cleaning water flow by the ball water passing means contributing to siphon action induction are performed. Since this is done, it is possible to secure a cleaning capacity equivalent to or higher than that of existing toilets. In addition, since the total amount of discharged cleaning water regulates the total amount of water flowing through both washing water passages, the total amount of discharged cleaning water can be regulated as described above through the restriction on the total amount of both washing water passages.

  The washing water from the rim ejection nozzle moves while swinging so as to slide on the ball surface, and obliquely merges with the accumulated water in the ball portion, and efficiently imparts a turning force to the accumulated water. As a result, the stored water in the ball portion is swirled and discharged from the discharge port, and the effect of discharging the stored water and the filth in the stored water is enhanced.

  Moreover, when the shape of the rim portion is overhanged so as to cover the rim ejection nozzle, the rim ejection nozzle can be made difficult to see and the appearance can be improved. Moreover, it is possible to prevent the spray washing water from inadvertently jumping out of the ball portion due to the overhang of the rim portion.

  In order to further clarify the configuration and operation of the present invention described above, an embodiment of the flush toilet of the present invention will be described below. FIG. 1 is an explanatory view showing a siphon-zette-type toilet 110 according to an embodiment of the present invention, with a part of its upper surface broken away, and FIG. 2 is a schematic longitudinal sectional view of this toilet 110 taken along line 2-2 in FIG. It is explanatory drawing shown along a broken line. FIG. 3 is a schematic cross-sectional view taken along line 3-3 in FIG. The siphon-jet toilet 110 performs washing water ejection from a later-described jet ejection port 122 and washing water ejection at the upper edge of the ball surface as it is washed. Hereinafter, each part of the toilet bowl 110 will be described with reference to FIGS. 1 to 3.

  As shown in FIGS. 1 and 2, the toilet bowl 110 includes a ball portion 120 that receives filth. The ball portion 120 has a concave portion 126 as a filth reservoir at the bottom thereof, and the upper peripheral wall of the concave portion is a water-covering surface 123 that contacts the water RW even when the toilet 110 is not washed, and the water RW when the toilet 110 is not washed. The exposed surface 124 is not in contact with.

  As shown in FIGS. 1 and 3, the jet outlet 122 is provided on the wall surface of the ball portion surrounding the recess 126, and a later-described jet water supply pipe 146 is connected in a watertight manner. When connecting the jet water supply pipe 146, a bush or the like is used, and there is no particular hindrance to the pipe connection from the outside of the ball portion. The jet outlet 122 is located on the left side with respect to the recess 126 and is located on the same side as the rim ejection nozzle 144.

  In the toilet 110, a siphon is provided as a two-way flush water flow system for supplying flush water to the ball unit 120 and a discharge pipe for discharging filth in the ball unit 120 toward the drainage startup pipe 190. A trap line 130 is provided.

  The siphon trap conduit 130 forms a conduit that communicates with the recess 126 and the outlet 125. The siphon trap pipe 130 is connected to a connecting path 131 that is bent obliquely upward from the discharge port 125, an ascending path 132 that extends in the bending direction of the connecting path 131, and then bends in the lateral direction. And a descending path 133 that curves downward from the lateral direction.

  These flow paths are formed integrally with the toilet bowl 110, which is a pottery, by forming the flow path shape into a plaster mold or a resin mold. However, the flow path may be formed by a member other than the toilet bowl 110. Is possible. For example, all or some of these flow paths may be formed of other members such as resin and connected to the discharge port 125.

  The end of the descending path 133 is connected to a drainage rising pipe 190 provided on a building-side wall or floor via a resin drainage socket 170. In this case, the lower end opening of the drain socket 170 becomes the terminal drain port of the siphon trap conduit 130.

  When a bent portion (hereinafter referred to as a bent portion) from the ascending path 132 to the descending path 133 of the siphon trap pipe 130 is filled with the inflow washing water from the discharge port 125, the tip of the descending path 133 and the accumulated water are filled. A pressure difference is generated between the ball portion 120 and a downward pulling force. Due to this drawing force, the accumulated water at a position lower than the bent portion is led to the drainage rising pipe 190 together with the filth at a stretch. Thus, siphon action is induced.

  Next, the washing water flow system will be described. The rear portion of the toilet bowl 110 is a hollow raised portion 112 raised upward. A lid 17 is attached to the raised portion 112, and a valve unit 115 is disposed inside the raised portion. The valve unit 115 is connected to a pressurized water supply source (not shown), for example, a primary side water supply pipe 116 branched from a water pipe, and receives tap water supply. The valve unit 115 switches between the on-off valve mechanism that controls the flow of the wash water downstream through the opening and closing of the pipe, and the water supply to the above-described zette water supply pipe 146 and the water supply to the rim water supply pipe 143 described later. A switching valve mechanism to be controlled is incorporated. The primary side water supply pipe 116 is connected to the on-off valve mechanism of the valve unit 115.

  Here, the valve mechanism operation in the valve unit 115 will be briefly described. When the washing button 16 provided on the lid 17 is operated, the valve unit 115 opens the pipe line, allows tap water to flow downstream with its pressure, closes the pipe line, and stops water flow. To do. The valve unit 115 switches the water flow destination to one of the jet water supply pipe 146 and the rim water supply pipe 143 while the on-off valve mechanism is open. Therefore, by controlling the pipe opening time in the valve unit 115, the amount of washing water discharged from the siphon trap pipe 130 to the outside of the toilet (discharged washing water amount) is limited to about 5 to 7 liters. In this embodiment, it is set to about 6 liters at the time of stool washing. The valve unit 115 can take various structures, such as a configuration using a mechanically driven on-off valve and a switching valve, or an electric signal (ON / OFF) from the control device for the electromagnetic on-off valve and the switching valve. It is possible to adopt a configuration in which the drive is controlled by a signal).

  The above-described amount of drainage washing water refers to the amount when excreted stool is transported and discharged from the toilet bowl for toilet flushing. Since the flush toilet shown in FIG. 1 and the like can be shared for large and small urine as in this embodiment, the amount of flush water can be set to be large or small during stool washing and urine washing. When setting the amount of washing water, the stool washing needs to transport and discharge solid waste, and since there is no solid matter during urination, the amount of washing water during stool washing naturally increases. That is, although urine washing can be performed even with the set amount of washing water at the time of stool washing, stool washing is insufficient for the set amount of washing water at the time of urine washing. Therefore, in order to set the washing water amount that can be reliably executed regardless of whether the toilet bowl is washed or not, the washing water amount at the time of stool washing is determined, and the pipe opening time corresponding to this washing water amount is set. Then, change the operation direction of the operation buttons and operation handle for toilet bowl cleaning between large and small urinals, and at the time of urine washing, the amount of washing water is smaller than the set amount of washing water (drainage washing water amount) set as above The pipeline opening / closing time may be determined so that

  Further, in this embodiment, the valve unit 115 performs the flow destination switching by the switching valve mechanism during the pipeline opening as follows. After the operation of the cleaning button, first, cleaning water (tap water) is passed through the rim water supply pipe 143 for a predetermined time (initial flow). Thereafter, the water supply destination is switched to the jet water supply pipe 146, and the cleaning water is passed through the jet water supply pipe 146 for a predetermined time. Next, the water destination is switched to the rim water supply pipe 143 again, and cleaning water (tap water) is passed through the rim water supply pipe 143 for a predetermined time (final water flow). The total time of these water flows is the above-mentioned pipe opening / closing time, and the water passing time at the time of each water passing is set in advance. The final water flow using the above-described rim water supply pipe 143 is for storing a predetermined amount of stored water RW in the ball portion 120 in preparation for the next and subsequent flights.

  The valve unit 115 is connected to a zette water supply pipe 146 and a rim water supply pipe 143 with respect to the switching valve mechanism. If the primary side water supply pipe 116 and the rim water supply pipe 143 are pipes for introducing cleaning water (tap water) from an external water pipe into the toilet bowl 110, the jet water supply pipe 146 can be said to be branched from the pipe line. The valve unit 115 is disposed at the branch point.

  The rim water supply pipe 143 guides cleaning water to the inside of the base of the rim 121 that surrounds the ball 120 at its upper end. FIG. 4 is an explanatory diagram for explaining a pipe line configuration of the rim water supply pipe 143 and a state of fixing thereof, and FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. As shown in FIG. 4, the rim water supply pipe 143 includes a straight tubular valve side pipe part 143a connected to the valve unit 115, a ball side pipe part 143b fixed to the ball part 120, and both pipe parts. Are divided into bent pipe line portions 143c. The valve side pipe part 143a and the ball side pipe part 143b are formed of a resin or metal pipe material, and the bent pipe part 143c is an elastic material (for example, rubber, elastomer or Soft resin material etc.) and exhibit flexibility. The ball side pipe line part 143b has a flow straightening plate 143d that divides the pipe cross section into four parts and rectifies the flow of the passing wash water in the middle of the pipe line.

  Here, how the rim water supply pipe 143 is assembled in the toilet will be described. First, a valve-side conduit portion 143a, a bent conduit portion 143c, and a ball-side conduit portion 143b are prepared, and are adhered in this order with an adhesive or the like. If it carries out like this, it will become the rim water supply pipe | tube 143 which can be bent freely by the bending | flexion pipe line part 143c. The valve-side conduit portion 143a of the rim water supply pipe 143 is fixed to the valve unit 115, the ball-side conduit portion 143b is inserted into the bottom opening 112a of the raised portion 112, and the distal end of the conduit portion is connected to the base wall surface of the rim portion 121. It is inserted into the through hole 120a formed in the space. In this way, the rim water supply pipe 143 forms a path bent by the bent pipe line portion 143c, as shown in FIGS. Next, a seal member 143f is interposed between the flange portion 143e of the ball side conduit portion 143b and the base wall surface, and the rim ejection nozzle 144 is screwed into the tip side screw portion of the ball side conduit portion 143b from the book portion surface side. To do. The rim water supply pipe 143 is fixed at both ends thereof by screwing the rim jet nozzle 144, and the washing water from the valve unit 115 is guided to the rim jet nozzle 144.

  The through-hole 120a to which the rim ejection nozzle 144 is mounted and fixed is located on the upper left side with respect to the ball portion 120 and is grooved in a substantially horizontal direction along the upper edge of the ball surface (specifically, the exposed surface 124) of the ball portion 120. It is formed so as to communicate with the guide recess 124a formed in a concave shape. Since the rim ejection nozzle 144 is fixed to the through hole 120a, the nozzle opening is directed to the guide recess 124a. Therefore, the behavior of the cleaning water ejected from the rim ejection nozzle 144 (hereinafter, the cleaning water ejected in this way is referred to as the rim shot cleaning water RS) is as follows. FIG. 6 is an explanatory diagram for explaining the behavior of the rim shot cleaning water.

  As shown in the drawing, the rim shot cleaning water RS swivels in a substantially horizontal direction along the upper edge of the ball surface while being guided by the guide recess 124a of the ball portion 120, and extends around the entire upper edge of the ball surface. Go around. Thereafter, the rim shot cleaning water RS travels along the exposed surface 124 while swirling and reaches the accumulated water RW in the recess 126, and with the flow diverging from the swirling flow at various places as the swirling flow speed decreases. And then fall down along the exposed surface 124. The recessed shape of the guide recess 124a described above is not limited to the shape shown in FIGS. 2 and 3, and the cleaning water swirling while being guided by the guide recess 124a is almost entirely around the upper edge of the ball surface. Any shape that flows along the exposed surface 124 while circulating around the circumference may be used. Further, since the branch flow from the above-described swirl flow is accompanied by a decrease in the speed of the swirl flow, the manner in which the branch flow occurs is determined by the washing water ejection speed (initial speed) from the rim ejection nozzle 144.

  The rim shot cleaning water RS causing such a turning behavior is nothing but tap water supplied from the primary side water supply pipe 116 via the valve unit 115. Therefore, since the rim shot cleaning water RS has the above-mentioned turning behavior with the water pipe original pressure, the ball surface is cleaned with high energy during the turning process. Such toilet cleaning (ball surface cleaning) can exhibit high cleaning ability.

  In this embodiment, tap water having tap water source pressure is guided to a rim jet nozzle 144 by a rim water supply pipe 143 having a substantially uniform pipe diameter, and the jet wash water from the rim jet nozzle 144 is referred to as rim shot wash water RS. To do. Therefore, the rim water supply pipe 143 allows the washing water to flow into the rim ejection nozzle 144 with a stable flow. When the washing water is ejected, the rim ejection nozzle 144 ejects the ejection direction, the washing water ejection speed, and the like. Since the situation can be stabilized, the above-described substantially horizontal turning behavior of the rim shot cleaning water RS after ejection can be stabilized. From these things, the cleaning capability accompanying the turning behavior of the rim shot cleaning water RS can be further enhanced.

  Thus, the rim shot cleaning water RS moves while swinging so as to slide on the ball surface, and obliquely merges with the accumulated water RW of the ball portion, and efficiently imparts a counterclockwise turning force to the accumulated water RW. . As a result, the stored water RW in the ball unit 120 is discharged from the discharge port 125 as a counterclockwise swirling flow. As described above, the swirling water is swirled by the rim shot cleaning water, so that the effect of discharging the accumulated water and the filth in the accumulated water is enhanced.

  The washing water flowing through the rim water supply pipe 143 is rectified by the rectifying plate 143d, reaches the rim ejection nozzle 144, and is ejected from the nozzle. Therefore, since the washing water can be ejected from the rim ejection nozzle 144 in a state where the flow is in order, the ejection state such as the ejection direction is also stabilized by the nozzle, so that the above-described washing water behavior after ejection is stably caused. be able to.

  As shown in FIG. 4, the rim water supply pipe 143 pipe upstream of the flow straightening plate 143d is a water supply path inclined toward the rim jet nozzle 144 (specifically, the current flow plate 143d). It is possible to prevent the washing water from flowing backward from the side. The rim ejection nozzle 144 is positioned at the base of the rim portion 121 at the upper end of the ball surface, and the rim portion 121 is overhanging so as to cover the rim ejection nozzle 144. Therefore, the rim portion 121 makes it difficult to see the rim ejection nozzle 144 from above, and the appearance can be improved. Further, the overwash of the rim portion 121 around the rim ejection nozzle 144 can prevent the ejection cleaning water from inadvertently jumping out of the ball portion.

  In this embodiment, the rim ejection nozzle 144 is fixed to the tip of the rim water supply pipe 143, but the opening of the rim water supply pipe 143 or the through-hole 120a of the ball wall surface can be used as a washing water jet outlet. In this case, the rim water supply pipe 143 may be directly fixed to the through hole 120a via a bush or the like.

  Next, in addition to the rim water supply pipe 143, a description will be given of the jet water supply pipe 146 that allows cleaning water to pass through the ball portion 120. As shown in FIGS. 1 to 3, the jet water supply pipe 146 forms a water supply path from the switching mechanism of the valve unit 115 to the jet outlet 122 of the recess 126 described above. Therefore, the jet water supply pipe 146 guides the cleaning water from the valve unit 115 to the recess 126 independently of the cleaning water ejection from the rim ejection nozzle 144.

  Here, the behavior of the accumulated water RW generated in the recess 126 as the cleaning water is ejected from the jet outlet 122 will be described. FIG. 7 is an explanatory view schematically showing the periphery of the recess 126 in order to explain the behavior of the water stored in the recess 126. As shown in the drawing, since the jet jet port 122 is open to the concave portion 126 at the bottom of the ball portion 120, the ball portion 120 is cleaned by the jet jet port 122 from a position lower than the water surface of the accumulated water RW. Water is spouted out. This washing water ejection occurs in the concave portion 126 in the region partitioned by the side surface as schematically shown in FIG. Accordingly, the cleaning water ejected from the jet outlet 122 (hereinafter, this ejected cleaning water is referred to as a ball portion ejection cleaning water BS) causes a swiveling behavior in the concave portion 126 and swirls together with the stored water RW in the concave portion 126 as shown in the figure. To do. This washing water behavior occurs separately from the rim shot washing water RS from the rim ejection nozzle 144 described above, and the stored water RW and the ball portion ejection washing water BS flow into the siphon trap conduit 130 communicating with the recess 126. cause.

  In this embodiment, the water flow switching by the switching valve mechanism of the valve unit 115 is performed in the order of the rim water supply pipe 143 (initial water flow) → the zette water supply pipe 146 → the rim water supply pipe 143 (final water flow). Do. Therefore, the above-described ball-portion-cleaning water BS that has passed through the zette water supply pipe 146 is made after the swirling of the accumulated water RW is caused by the rim shot cleaning water RS during initial water flow. In addition, the swirling water swirl associated with the ball-portion ejected cleaning water BS and the stored water swirling associated with the rim shot cleaning water RS are in the same direction due to the positional relationship between the rim ejecting nozzle 144 and the jet ejecting port 122 described above. For this reason, the swirling in the same direction is caused by the ball-portion cleaning water BS in the stored water RW in a state where the rotation accompanying the rim shot cleaning water RS has occurred. Accordingly, the swirling water swirl is amplified by the ball-portion-spouted cleaning water BS, so that the cleaning water inflow into the siphon trap conduit 130 is promoted.

  The rim ejection nozzle 144 and the rim water supply pipe 143 may be formed on the right side in FIG. Moreover, although the jet water supply pipe | tube 146 was connected to the jet jet nozzle 122 so that it might be formed with a pipe line member, it can also be performed as follows. A path (zet path) communicating with the recess 126 is formed on the outside of the ball part integrally with the toilet bowl, and fired. And you may make it insert the jet water supply pipe | tube 146 connected to the valve unit 115 in said jet path | route, and to eject the ball part ejection washing water BS from the opening of a jet path.

  According to the toilet 110 of the present embodiment described above, the washing water is ejected from the rim ejection nozzle 144 by the initial water flow, and the washing water swirls in the substantially horizontal direction along the guide recess 124a at the upper edge of the ball surface. . In addition, as described above, this washing water swirl is caused by the ejection of tap water having a water pipe main pressure. For this reason, the ball surface is cleaned with high energy during the turning process. Such toilet cleaning (ball surface cleaning) can exhibit high cleaning ability.

  Further, by adopting the turning behavior, the washing water (rim shot washing water RS and branch washing water) is obliquely merged with the stored water RW in the ball portion. For this reason, even if washing water is ejected from the rim ejection nozzle 144 with washing water having a higher pressure (tap water source pressure) than when a toilet-mounted washing water tank is used, the washing water collides with the stored water. It is possible to reliably suppress the generation of sound due to splashing and collision of cleaning water.

  In addition, after the initial water flow, washing water is ejected from the jet jet outlet 122 to cause swirling behavior in the accumulated water RW, and the suction of the washing water into the discharge port 125 of the siphon trap pipe 130 is promoted. For this reason, the siphon trap conduit 130 can be quickly filled with water, and the drainage efficiency of the stored water RW and filth can be increased through early induction of the siphon action by the siphon trap conduit 130. In addition, since the swirling water swirl associated with the washing water ejection from the jet outlet 122 is in the same direction as the swirling water swirling associated with the washing water ejection from the rim ejection nozzle 144, the accumulated water swirling is amplified. Therefore, the suction of the washing water to the discharge port 125 can be further promoted, and thereby the waste discharge efficiency can be further enhanced.

  Next, another embodiment will be described. FIG. 8 is an explanatory view showing a part of the upper surface of the toilet 110A of the second embodiment, and FIG. 9 shows a schematic longitudinal section of the toilet 110A along the broken line 9-9 in FIG. It is explanatory drawing. In the following description, the reference numerals used in the above embodiments are used as they are for members that perform the same functions as those in the above embodiments.

  As shown in the drawing, the toilet 110A of the second embodiment has a rim water passage 121a in the rim portion 121 extending from the rear left side of the ball portion to the right side of the tip of the ball portion, as shown in FIG. The rim water passage 121a is formed by making the rim portion 121 into a hollow shape over a range shown in the figure when the toilet bowl is manufactured. The rim water passage 121a has a rim water discharge hole 121b at the tip of the ball portion. As shown in FIG. 9, the rim water discharge hole 121b is formed so that washing water can be ejected toward the exposed surface 124 near the rim base.

  The toilet 110A has the rim water supply pipe 143 for performing the rim shot washing water RS described above, the rim ejection nozzle 144, and the like in common with the above embodiment, for water flow to the rim water passage 121a. A second rim water supply pipe 150 is provided. The second rim water supply pipe 150 is formed of a flexible pipe member made of resin or the like, and is connected to the switching valve mechanism of the valve unit 115. In this case, when connecting to the rim water passage 121a, the bush 151 is connected to the through hole 121c of the rim portion 121 in a watertight manner. In addition, since the 2nd rim water supply pipe | tube 150 arrangement | positioning from the valve unit 115 to the through-hole 121c becomes an operation | work inside a toilet bowl, a suitable jig is used.

  Even in the toilet bowl 110A of the second embodiment described above, the initial water flow using the rim water supply pipe 143 is executed by the valve unit 115 as described above. After that, the water destination is switched to the second rim water supply pipe 150, the water destination is switched to the rim water supply pipe 143 again, and the final water flow is executed. When water is passed through the second rim water supply pipe 150 in this way, the wash water (tap water) is passed from the second rim water supply pipe 150 into the rim water passage 121a, and the rim water discharge at the tip of the ball portion. It is ejected from the hole 121b. The washing water ejected from the rim water spouting hole 121b in this way flows down along the ball surface of the ball portion 120 as shown by the white arrow RBS in the figure, and enters the discharge port 125 at a position facing the rim water spouting hole 121b. Inflow. At that time, the accumulated water RW and the filth are pushed directly from the outlet 125 into the siphon trap conduit 130. Therefore, according to the second embodiment, it is possible to improve the discharge efficiency of the filth together with the improvement of the cleaning ability accompanying the cleaning water jet from the rim jet nozzle 144. In the toilet bowl 110A of the second embodiment, washing water is jetted onto the ball surface with tap water source pressure. However, this ejection is performed after toilet flushing (ball surface washing) is performed with ejection washing water from the rim ejection nozzle 144, and the ejection time from the rim spout hole 121b is approximately 1 / of the total washing time. It only takes about 3 to 1/4 time. Therefore, the scattering of the cleaning water caused by the collision of the ball surface of the cleaning water ejected from the rim water spouting hole 121b and the sound accompanying the collision are suppressed compared to the case where the cleaning water is jetted toward the ball surface over the entire cleaning period. There is no practical problem.

  FIG. 10 is an explanatory view showing a toilet bowl 110B of the third embodiment with a part of its upper surface broken away. In the third embodiment, all flushing water for toilet flushing is covered by the flushing water from the rim ejection nozzle 144. Therefore, the toilet 110B includes only a rim water supply pipe 143 and a rim ejection nozzle 144 as shown in the drawing, and the cleaning water (tap water) is passed from the valve unit 115 to the rim water supply pipe 143 over the entire cleaning period. To do. Even if it does in this way, while being able to exhibit high washing | cleaning capability with the washing | cleaning water (rim shot washing water RS) which raise | generates the above-mentioned turning behavior, washing water scattering and generation | occurrence | production of a sound can be suppressed.

  FIG. 11 is an explanatory view showing a schematic longitudinal section of a toilet bowl 110C of the fourth embodiment. In the fourth embodiment, the present invention is applied to a so-called wash-out toilet. The toilet bowl 110C includes a flush water dropping passage 127 on the front side of the toilet bowl, and discharges accumulated water and filth overflowing from the recess 126 to the outside of the toilet bowl with flush water supply. Even in the toilet bowl 110C, in order to perform the washing water ejection that causes the above-described turning behavior, the rim water supply pipe 143 and the rim ejection nozzle 144 are provided in the same manner as in the third embodiment, and the valve unit 115 is used during the entire washing period. The washing water (tap water) is passed through the rim water supply pipe 143. Even if it does in this way, while being able to exhibit a high washing | cleaning capability with the washing | cleaning water (rim shot washing water RS) which raise | generates the above-mentioned turning behavior, washing water scattering and generation | occurrence | production of a sound can be suppressed. Further, even in the case of cleaning water supply using the rim shot cleaning water RS, the accumulated water and dirt in the concave portion 126 can overflow into the cleaning water dropping passage 127 without hindrance.

  As mentioned above, although the form in which the present invention is implemented was explained, the present invention is not limited to such an example at all, and it is needless to say that the present invention can be carried out in various modes without departing from the gist of the present invention. is there.

  For example, in the above embodiment, the rim water supply pipe 143 and the rim ejection nozzle 144 are configured to have one set, but can be modified as follows. FIG. 12 is an explanatory view for explaining a toilet bowl 110D of a modified example. The toilet 110D has upper and lower rim ejection nozzles 144 at the upper edge of the ball portion, that is, at the base of the rim portion 121. A rim water supply pipe 143 is connected to each rim ejection nozzle 144 from the valve unit 115. In this case, the guide recess 124a is wide in preparation for the washing water jet from each rim jet nozzle 144. The valve unit 115 performs valve control so that the cleaning water is simultaneously ejected from the respective rim ejection nozzles 144. In this way, a swirling flow of washing water occurs in a wide state, and the chance of the swirling flow coming into contact with the surface of the ball surface is increased, so that a high cleaning ability can be exhibited.

  Moreover, when installing the several rim | limb ejection nozzle 144 like said modification, it can also be performed as follows. That is, one rim ejection nozzle 144 can be provided on the left side and the other on the right side as shown in FIG. At this time, if the vertical positions of the left and right rim ejection nozzles 144 are shifted, when cleaning water is simultaneously ejected from the left and right nozzles, the clockwise swirling cleaning water and the counterclockwise swirling cleaning water are not used. It is possible to prevent the occurrence of a prepared collision, which is preferable.

  Moreover, although the case where the present invention is applied to the siphon-jet toilet 110, the siphon toilet, or the wash-out toilet has been described as an example, it can be understood as an invention in which the toilet is combined with other devices and members. For example, sanitary washing devices combined with functional toilet seats that realize various functions such as local washing and heating, toilet kit devices combined with storage cabinets and hand-washing devices, wall materials, floor materials and ceiling materials as toilet room structures It can also be applied to a system toilet apparatus that combines the above.

  The flush toilet of the present invention can be used as a flush toilet in hotels, public facilities as well as ordinary households.

It is explanatory drawing which fractures | ruptures a part of upper surface, and shows the siphon jet type toilet bowl 110 which is an Example of this invention. It is explanatory drawing which shows the schematic longitudinal cross-section of this toilet bowl 110 along the broken line of the 2-2 line of FIG. FIG. 3 is a schematic sectional view taken along line 3-3 in FIG. 1. It is explanatory drawing for demonstrating the pipe line structure of the rim water supply pipe | tube 143, and the mode of the fixation. FIG. 5 is a sectional view taken along line 5-5 in FIG. It is explanatory drawing for demonstrating the behavior of rim shot washing water. It is explanatory drawing which represented the recessed part 126 periphery typically in order to demonstrate the stored water behavior of the recessed part 126. FIG. It is explanatory drawing which fractures | ruptures a part of upper surface, and shows toilet bowl 110A of 2nd Example. It is explanatory drawing which shows the schematic longitudinal cross-section of this toilet bowl 110A along the 9-9 broken line of FIG. It is explanatory drawing which fractures | ruptures a part of upper surface, and shows toilet bowl 110B of 3rd Example. It is explanatory drawing which shows the schematic longitudinal cross-section of toilet bowl 110C of 4th Example. It is explanatory drawing explaining toilet bowl 110D of a modification.

Explanation of symbols

16 ... Cleaning button 17 ... Lid 110, 110A-110D ... Toilet 112 ... Raised portion 112a ... Bottom opening 115 ... Valve unit 116 ... Primary side water supply pipe 120 ... Ball portion 120a ... Through hole 121 ... Rim portion 121a ... Rim water passage 121b ... Rim water discharge hole 121c ... through hole 122 ... jet outlet 123 ... water-covering surface 124 ... exposed surface 124a ... guide recess 125 ... discharge port 126 ... recess 127 ... wash water dropping passage 130 ... siphon trap conduit 131 ... connection passage 132 ... Ascending path 133 ... Descent path 143 ... Rim water supply pipe 143a ... Valve side pipe line part 143b ... Ball side pipe line part 143c ... Bending pipe line part 143d ... Rectifying plate 143e ... Bridge part 143f ... Seal member 144 ... Rim jet nozzle 146 ... Zet water supply pipe 150 ... second rim water supply pipe 151 ... bush 170 ... drain socket 190 ... drain stand Up tube BS ... ball portion jet washing water RS ... rim shot cleaning water RW ... accumulated water

Claims (2)

A flush toilet that performs flushing by flushing fresh flush water into a toilet bowl portion for storing stored water, and is formed in a groove shape in a substantially horizontal direction over substantially the entire circumference of the upper portion of the ball portion. A guide recess, a rim spray nozzle that is attached and fixed to the upper side portion of the ball portion, communicates with the guide recess, and jets the cleaning water toward the guide recess, and a filth reservoir formed at the bottom of the ball portion A jet outlet opening in the recess as the above, and tap water as pressurized cleaning water from an external pressurized water supply source is introduced as the new cleaning water, and water guiding means for guiding the cleaning water to the rim ejection nozzle The cleaning water jetted from the rim jet nozzle causes a swirling flow in a substantially horizontal direction along the upper edge of the ball surface of the ball portion while being guided by the guide recess, and substantially around the upper edge of the ball surface. Go around the whole lap Also the positional relationship of the rim jet nozzle and jet spout, and the pooled water swivel with the wash water jetted from pooled water turning a rim jet nozzle with the wash water jetted from the jet spout was set to be the same direction A flush toilet characterized by that. The flush toilet according to claim 1, further comprising a valve unit for switching water flow to the rim ejection nozzle and the jet outlet.