JP5610988B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet bowl.

  The flush toilet is for flushing the stool with water, but the preferred flush toilet is to flush the stool and sewage cleanly regardless of the state of the stool, and further to the stool in the drain pipe connected to the toilet. It conveys filth.

  By the way, feces may adhere to the ball surface of the toilet bowl.

  To facilitate the removal of stool, the rim of the toilet bowl is made hollow and a number of small holes are provided in the inner wall surface of the rim, and water from the water supply pipe is passed through such rim so that the rim can be passed through the water channel. Can be considered. With such a configuration, the water supplied to the rim from the water supply pipe flows out from the small hole to the ball surface and cleans the ball surface with water of direct water pressure. This is called rim cleaning.

  Moreover, in flush toilet bowls, by flowing water into the toilet bowl, the stored water (sealed water) is replaced, so that the stored water maintains a new state each time.

  Furthermore, in flush toilets, sewer odors and gas are prevented from entering the indoors through the piping of drainage facilities. For this purpose, a drain trap is provided at a location near the toilet of the pipe. The drain trap is curved, and because of its shape, all of the water that has flowed through the toilet bowl is stored in the bottom of the toilet bowl that communicates with the drain trap without flowing.

  As a result, the inside and outside of the toilet are blocked, and the bad odor and the ingress of gas are suppressed as described above. Not only that, pests and rats are difficult to enter the toilet along the drain. In addition, although water is stored by providing a drain trap, the depth (sealed depth) of the stored water is determined by standards.

  On the other hand, there are a washing-off type and a siphon jet type as mainstream methods of water flow (washing method) in flush toilets.

  The washing-off type is a method that uses only the momentum of water flowing to the toilet bowl when discharging the filth from the toilet bowl.

  The siphon jet type is a standard method with a feature that the water surface is wider than the wash-off type. The larger the water storage surface, the more the toilet ball surface comes into contact with water, so the ball surface is more difficult to dry. If it is difficult to dry, stool will not adhere to the ball surface. For this reason, even if filth adheres to the ball surface, the filth slides down the ball surface and sinks into the stored water, so that the odor is difficult to leak from the toilet.

  Moreover, when the water storage surface is wide, the sealing depth becomes deep. When the sealing water depth is deep, the drop (hereinafter referred to as the drainage drop) between the connection point of the drainage pipe connected to the flush toilet and the drainage pipe connected to the flush toilet is increased, Causes the so-called siphon phenomenon.

When the siphon phenomenon occurs, the amount of water stored in the toilet bowl decreases suddenly, and the stored water surface is rapidly lowered and discharged. In other words, even if the filth floats on the surface of the water reservoir, the water gains momentum.

  And as a result of the siphon phenomenon, when the water surface falls to the entrance of the drain trap at the bottom of the toilet, air is sucked into the drain trap. Then, the siphon is broken, and the discharge of the stool from the toilet due to the siphon phenomenon is terminated. On the other hand, water is supplied to the toilet from the water supply pipe, and the water is stored in the ball until the sealing depth reaches a depth determined by the standard, thereby completing the cleaning.

  On the other hand, a flash valve is an example of a valve used in the siphon jet type. The flush valve is a valve that uses the water pressure of the water supply pipe connected to the toilet as it is. When the drain button or drain handle on the flush valve is operated, the water stops after the water has been drained for a certain period of time. The flush valve is also called a cleaning valve.

  The toilet bowl is cleaned by controlling the supply and stop of water to the toilet bowl by such a flush valve. For this reason, the flush valve can be referred to as a toilet flushing switch.

  On the other hand, there is a strong demand for realizing significant water savings in toilet cleaning water due to recent environmental problems. However, for this purpose, the cleaning device must be able to accurately control the amount of water flow. However, the conventional flush valve originally does not have a flow rate control adjustment function for the purpose of saving water in the apparatus itself. In other words, it can be said that the cause of the waste of water is in the mechanism of the flash valve itself.

  This is a JIS standard that defines the performance of the flash valve. In construction, the standard water discharge amount of the valve is 15 liters and the tolerance is 1.5 liters, but the test pressure is 1 kgf / cm2 (0.1 MPa). This is due to the description of “11 to 16.5 liters in the following, and 13.5 to 19 liters at a test pressure of 4 kgf / cm 2 (0.39 MPa) or more”.

  In short, the flush valve flows between 11 and 16.5 liters (66% tolerance) when operating under a water pressure of 1 kg or less, and between 13.5 and 19 liters (71%) when the water pressure is 4 kg or more. Then, even if the amount of flowing water is different at every drainage operation, it is recognized as a normal product. For this reason, about 15 liters of water can flow in one drain operation, and about 20 liters of water depending on conditions such as water pressure.

  So, from the viewpoint of contributing to ecology and natural environment protection, the water momentum flowing out of the flash valve is accelerated, slowed, foamed to reduce water, “Toilet bowls with built-in cleaning devices” and the like, which are said to be water-saving types with “large and small sorting functions”, have been proposed.

  In addition, the present applicant has proposed a flush valve that realizes accurate flowing water.

JP 2002-97704 A

If the amount of water used can be reduced, it is possible not only to reduce water charges, but also to reduce the amount of drainage into the sewer. If the amount of wastewater discharged into the sewer can be reduced, it is possible to reduce the power required for sewage treatment.

  Against this background, interest in water conservation has increased worldwide, and further improvement of water conservation technology has been desired.

  This invention is made | formed in view of the said situation, and makes it a technical subject to provide the flush toilet bowl which can further save water.

  That is, the flush toilet of the present invention is configured to receive a stool and have a ball part having a rim that is hollow and formed with a plurality of holes as an outer edge of the toilet, and water supplied from the water supply pipe to the ball part. A tank body to be supplied earlier, a stool discharge hole for discharging feces together with water toward the drain pipe, a flow path connecting the water tank body and the stool discharge hole, A partition provided between the rim and the water tank body, and a switching unit formed on the partition and controlling the amount of water supplied to the rim or the flow path are provided.

  Further, the present invention employs a siphon jet type as a washing method, uses a flush valve that directly uses the water pressure of the water supply pipe connected to the toilet, and flushes the stool with water to the drain pipe by operating the flush valve. It is a type toilet. The flush toilet of the present invention receives a stool and has a ball part having a rim that is hollow and formed with a plurality of holes as an outer edge of the toilet bowl, and is integrally formed with the ball part, and when the flush valve is operated, A water tank body to be supplied before water to be supplied to the ball part, a stool discharge hole formed at the bottom of the ball part for discharging feces together with water toward the drain pipe, and the water tank A body, a flow path connecting the stool discharge hole, a partition wall provided between the rim and the water tank body, and a switching formed on the partition wall to control the amount of water supplied to the rim or the flow path. Means.

  The switching means includes an outer case, an inner case that moves inside the outer case, and an elastic body that is interposed between the inner case and the outer case. In order to add water, an introduction hole for introducing water into the outer case is formed, and depending on the degree of movement distance in the outer case of the inner case that moves under the pressure of water entering the outer case from the introduction hole, It is good also as switching to the 1st water channel which flows water toward a rim, or the 2nd water channel which flows water toward the said flow path.

  And a supply means for supplying water that seals the stool discharge hole of the ball portion, the supply means having a tank provided in the water tank body 5 and a penetrating through the tank and the ball portion. And a hole.

  In the present invention, a siphon jet type is applied as a cleaning method, a flush valve that uses the water pressure of a water supply pipe connected to the toilet 1 as it is is used, and flushing is performed by discharging the feces together with water to the drain pipe by operating the flush valve. It is also a toilet system.

In this system, the toilet bowl receives a stool and has a ball portion having a rim that is hollow and formed with a plurality of holes as an outer edge of the toilet bowl, and is integrally formed with the ball portion. When the flush valve is operated, A water tank body that is sent before the water supplied from the ball portion is supplied, a stool discharge hole that is formed at the bottom of the ball portion and discharges stool together with water toward the drain pipe, A water tank body and a flow path connecting the stool discharge hole, a partition wall provided between the rim and the water tank body, a first water channel formed on the partition wall and allowing water to flow toward the rim, and the flow And a flow path switching means for supplying water to the newly switched direction by switching to the second water path for flowing water toward the path. By this flow path switching means, the second water path is more second than the first water path. To increase the amount of water flowing into the waterway Characterized in that it was.

  According to the flush toilet of the present invention, it is possible to save water compared to conventional flush toilets.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole external appearance perspective view of 1st Example of this invention flush toilet bowl. It is a principal part enlarged view of FIG. It is a partially cutaway perspective view of the flow path switching valve of the flush toilet of the present invention. It is a longitudinal cross-sectional view of FIG. It is the sectional view on the AA line of FIG. FIG. 5 is a plan view of FIG. 4. It is operation | movement explanatory drawing of the valve | bulb of the flush toilet bowl of this invention. It is a flowchart for demonstrating operation | movement of the flush toilet bowl of this invention. It is a flowchart for demonstrating another means to accumulate the stored water of the flush toilet bowl of this invention in a toilet bowl.

Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be exemplarily described based on examples. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified.
Example 1
A flush toilet 1 (hereinafter referred to as a toilet) 1 shown in FIG. 1 is a so-called flush valve system that does not have a tank (water tank) that stores water for generating water flow, and is a toilet that sucks and discharges filth by siphoning. In this embodiment, the toilet seat and lid attached to the toilet body 10 are omitted.

  The toilet body 10 is fixed to a floor surface or a wall surface of a house by a bolt cap (not shown). The bolt cap is a mounting bolt having a cap on the bolt head. As shown in FIG. 4, a water supply pipe 2 and a horizontal drainage pipe 4 are connected to the toilet body 10.

  The water supply pipe 2 is a pipe drawn from a water main pipe (not shown), and is a pipe that sends water to the toilet body 10. A flash valve 3 is provided in the middle of the water supply pipe 2.

  The horizontal drainage pipe 4 is a pipe for discharging the stool collected in the ball portion 11 to the outside of the site. The horizontal drainage pipe 4 is connected to the rear part of the toilet body 10 using a drainage connection adapter 41 or an elbow which is a bellows-like pipe. The end (other end) of the horizontal drainage pipe 4 opposite to the toilet body 10 extends toward a sewage pipe (not shown).

  As can be seen from FIG. 4, a portion of the toilet body 10 that is located behind the ball portion 11 and is connected to the water supply pipe 2 is referred to as a water supply pipe connection portion 5. Let the water supply pipe connection part 5 be the starting point of the flow of water in the toilet body 10. That is, when the toilet user operates the flush valve 3, the water pressure from the water supply pipe 2 is supplied to the toilet 1 using the water pressure of the water supply pipe 2 as it is, and the supplied tap water (hereinafter, water) is supplied to the toilet 1. The part that enters first is referred to as a water supply pipe connection part 5.

  Similarly, as shown in FIG. 4, in the toilet body 10, a connection portion that is located below the water supply pipe connection portion 5 and is connected to the horizontal drainage pipe 4 is called a drainage pipe connection portion 6. Let the drain pipe connection part 6 be the end point of the flow of water in the toilet body 10.

  When the flush valve 3 is operated by the toilet user and water is supplied from the water supply pipe 2 to the toilet main body 10, the supplied water is a water supply that is a starting point of water flow in the toilet main body 10. The toilet body 10 is entered via the pipe connection 5. The water that has passed through the toilet main body 10 then reaches the horizontal drainage pipe 4 via the drain pipe connecting portion 6 that is the end point of the flow of water in the toilet main body 10, and finally reaches the sewage pipe after that. It is processed in the urine processing plant.

  Next, each component of the toilet body 10 will be described with reference to FIGS.

  The toilet body 10 has the shape of a bow like a bow, and includes the outer part 12 surrounding the ball part 11, the ball part 11, the water supply pipe connection part 5, and the drain pipe connection part 6 described above. Have.

  Here, before and after in this specification refers to a front side in a state where a toilet user is seated on a toilet seat (not shown) when using the toilet 1, and the opposite side is referred to as a rear side. Also, the left and right sides are referred to as the left side and the right side, respectively, with the toilet user facing forward. Similarly, the upper and lower sides in a seated state are referred to as an upper side and a lower side, respectively.

  As shown in FIGS. 4 and 5, the ball portion 11 has a bowl shape. A rim 13 corresponding to the upper edge of the outer shell 12 is positioned at the top. Further, a stool discharge hole 111 for discharging stool from the ball part 11 toward the horizontal drainage pipe 4 is formed in the central part near the rear of the bottom surface of the ball part 11. As shown in FIG. 6, the stool discharge hole 111 has a rectangular shape with four rounded corners when viewed in plan.

  As shown in FIG. 6, the rim 13 has an oval ring shape. The ring shape defines the opening of the toilet body 10. The rim 13 is hollow, and water flows through the rim.

  As can be seen from FIGS. 4 and 5, the rim 13 has a rectangular cross section. However, the shape of the cross section varies slightly depending on the rim portion. This is because the cross section of the rim 13 is changed between a portion of the rim 13 that contacts the toilet user's buttocks via the toilet seat and a portion that does not.

  This makes a difference in the contact pressure that the toilet user receives at the buttocks. In the former case, that is, the cross section of the rim 13 at the rear side of the toilet bowl is relatively large. The reason for this is to make it difficult to feel pain in the buttocks even when sitting on the toilet seat for a long time. In the latter case, i.e., the portion of the rim 13 at the front side of the toilet bowl has a relatively small cross section. This is because the toilet user does not need to relieve the pain based on the pain caused by the contact pressure. Moreover, if a cross section is small, the material of the ball | bowl part 11 can be reduced that much. As can be seen from FIG. 4, the rim 13 has the same height position as the water supply pipe connection portion 5 and is flush.

  Further, as can be seen from FIG. 6, the water supply pipe connecting portion 5 described above is connected to the rim 13 via a rim connecting portion 133 formed at the rear end portion of the rim 13. Thereby, the water sent from the water supply pipe 2 flows into the rim 13 via the water supply pipe connection portion 5 and the rim connection portion 133.

A large number of small holes 131 are formed in the rim 13 downward (see FIGS. 4 and 6). Accordingly, water flows out from the small holes 131 while the water flows through the rim 13. Water that has exited from the small hole 131 travels along the surface of the ball part 11 toward the fecal discharge hole 111 (see FIGS. 4 and 6) located on the bottom surface of the ball part 11. The water coming out of the small hole 131 of the rim 13 toward the fecal discharge hole 111 is
The water is gradually stored as accumulated water.

  However, the water supplied as the stored water from the small hole 131 of the rim 13 is used for replenishment less than the amount of water supplied from the stored water tank 52R described later. Therefore, the reservoir tank 52R can be said to be a makeup water tank. Further, the water discharged from the rim 13 performs rim cleaning, which is the surface cleaning of the ball portion 11, and functions as makeup water for forming accumulated water.

  As shown in FIG. 4, the stool discharge hole 111 is connected to the drainage connection adapter 41 through the stool discharge path 141. By providing the fecal discharge path 141, a drain trap is formed in the toilet bowl. The fecal discharge passage 141 is located immediately below the water supply pipe connecting portion 5, and the shape seen in the longitudinal section shown in FIG. 4 is convex. As for the degree of the convexity, the fecal discharge passage 141 is formed in a convex shape sufficient for the toilet 1 to secure a sufficient sealing depth h for realizing the siphon phenomenon (see FIG. 4).

  Specifically, the stool discharge passage 141 has a trap ascending pipe 141a that rises straight and obliquely from the connection point with the stool discharge hole 111 so that the rear side becomes higher from there (upward to the left shoulder in FIG. 4), and a trap ascending pipe 141a and a trap downcomer 141b that is continuous and rapidly descends.

  The trap rising pipe 141a has a straight cylindrical pipe shape. On the other hand, the trap downcomer 141b is a curved pipe-shaped part continuous to the trap upcomer 141a, and has an outer corner 141b1 and an inner corner 141b2 described below as far as seen in the longitudinal section of FIG.

  The outer corner portion 141b1 is located above the inner corner portion 141b2 and is relatively far from the drain pipe connecting portion 6. On the other hand, the inner corner portion 141b2 is located immediately below the outer corner portion 141b1, and is located relatively near the drain pipe connecting portion 6.

  Further, as shown in FIG. 4, the trap downcomer 141b has a curved shape from the outer corner 141b1 to the tip, and the L from the inner corner 141b2 to the tip rotates 180 degrees counterclockwise. It has an inverted L shape. Such a trap downcomer 141b has a drain pipe connecting part 6 at its tip.

  Then, the volume of the ball part 11 and the volume of the trap rising pipe 141a and the installation angle are set so that the stored water becomes full at the position of the inner corner part 141b2 when the water is stored, that is, the specified sealing depth h. The amount of water coming out from the small hole 131 of the rim 13 is set in advance. The surface of the accumulated water when it is full is called the accumulated water surface. In addition, the amount of stored water required to fill the water is determined in advance.

  Such a fecal discharge path 141 including the trap ascending pipe 141a and the trap descending pipe 141b is referred to as a drain trap. For this reason, the entrance of the flight discharge path 141 is referred to as a trap entrance. Furthermore, the inner corner portion 141b2 is called a trap top portion because it is a full water position.

  A jet jet hole 11j from which a jet jet flows when the flash valve 3 is operated is formed in a portion of the ball portion 11 that faces the trap entrance. The jet jet hole 11j will be described after the water supply pipe connecting portion 5 is described in detail below.

  As can be seen from FIGS. 1 and 4 to 6, the water supply pipe connection portion 5 is a water tank body that is located adjacent to the upper portion of the fecal discharge passage 141 that is a drain trap. As can be seen from FIG. 1, the overall shape of the water supply pipe connecting portion 5 is roughly like a rice bowl. Further, as shown in FIG. 6, the shape seen in a plane has a bifurcated shape such that the “gate” is laid sideways. Furthermore, as shown in FIG. 1, the side surface has a shape like a boot.

  Further, as shown in FIG. 4, the water supply pipe connecting portion 5 has a container shape in which a part of the bottom surface is raised at the center in the longitudinal section. Furthermore, in the cross-sectional view shown in FIG. 5, the water supply pipe connection portion 5 has a container shape in which a part of the bottom surface rises downward and inside. The rise of the bottom surface is due to the fact that the fecal discharge passage 141 is integrally formed with the bottom surface of the water supply pipe connecting portion 5.

  In other words, the water supply pipe connection part 5 includes a water receiving tank part 50 that receives water from the water supply pipe 2 (see FIGS. 1 and 4 to 6), and a pair of arms that extend forward from the left and right sides of the water receiving tank part 50. 52L, 52R.

  The water receiving tank portion 50 is connected to the hollow of the rim 13 through a part of the front wall thereof.

  Among the arm portions 52L and 52R, the arm portion 52L located at the upper portion in FIG. 6 (the left side when the toilet user is seated on the toilet seat) connects the water supply pipe connection portion 5 and the fecal discharge hole 111, and the water supply pipe It functions as a flow path for guiding water from the connecting portion 5 to the fecal discharge hole 111 (hereinafter, the arm portion 52L is referred to as a flow path 52L). Moreover, the arm part 52R located in the lower part (the right side when the toilet user is seated on the toilet seat) in the same figure functions as a tank for storing water as the stored water (hereinafter, the arm part 52R is referred to as the stored water). (Referred to as a tank 52R for use).

  The channel 52L descends in a straight line with the left side of the fecal discharge hole 111 facing forward (see FIGS. 4 to 6), and then turns sharply clockwise and backward in the vicinity of the fecal discharge hole 111. It is drawn and bent. In this state, the stool discharge hole 111 is connected to the front edge 111a. The jet jet hole 11j is formed in the front edge 111a.

  As shown in FIG. 4, the jet jet hole 11j is a hole having a considerably smaller diameter than the flow path 52L. Therefore, the flow path 52L is hung from the base end side where the flow path 52L is connected to the water receiving tank 50 to the front end side where it is connected to the jet jet hole 11j so that the flow path 52L can be connected to the jet jet holes 11j. The diameter is gradually reduced.

  Therefore, as described above, the flush valve 3 uses the water pressure of the water supply pipe 2 as it is, the influence of gravity on the water flowing down the flow path 52L, and the jet jet holes 11j are connected to the flow path 52L. Compared with the fact that the hole has a considerably small diameter, the water flowing down the flow path 52L is jetted from the jet jet hole 11j to the fecal discharge hole 111 as a jet water stream with extremely high momentum. This state is called a state in which jet cleaning is being performed.

  Next, the stored water tank 52R will be described with reference to FIGS. The reservoir tank 52R has a through passage (through hole) 521R that opens to the inner surface of the ball at its front end. The water stored in the reservoir tank 52R flows out through the through-passage 521R, travels along the surface of the ball portion 11, and passes through the stool discharge hole 111 (FIGS. 4 and 6) located on the bottom surface of the ball portion 11. Head to see). And it collects in the bottom part of the ball | bowl part 11 as stored water.

  Further, as can be seen from FIG. 6, the water supply pipe connecting portion 5 is connected to the rim 13 via a rim connecting portion 133 having a rectangular planar shape.

  The rim connecting portion 133 is a pair of a front wall 5f that is one wall of the water supply pipe connecting portion 5 and a pair of front walls 5f that extend in parallel with a certain distance from the front wall 5f toward the front. Protruding walls 133F and 133R. The pair of projecting walls 133F and 133R are integrally formed at the rear end of the rim 13, so that the water supply pipe connecting portion 5 and the rim 13 are connected via the rim connecting portion 133 as described above. It is integrated.

A part 5 fp of the front wall 5 f that is one wall of the water supply pipe connection part 5 is also a wall that separates the water supply pipe connection part 5 and the rim 13. For this reason, a part 5fp of the front wall 5f is hereinafter referred to as a partition wall 5fp.

  The partition wall 5fp is connected to the rim 13 via the rim connection part 133 as described above. Since the rim 13 has a ring shape, the rim connecting portion 133 that intersects the rim 13 communicates with the rim 13 in a bifurcated shape (see FIGS. 1 and 6).

  A valve 15 is attached to the partition wall 5fp in a penetrating state (see FIG. 7). In order to pass the valve 15 through the partition wall 5fp, a through hole 212a is formed in the partition wall 5fp. A bush 7, which is a rubber cylinder, is fitted into the through-hole 212 a at both ends.

  The bush 7 cannot move in the axial direction when it is fitted in the through hole 212a. This is because projecting flanges 71F and 71R are formed at both ends in the axial direction of the bush 7, and the distance between the projecting flanges 71F and 71R is the same as the wall thickness of the partition wall 5fp.

  In addition, the overhanging flange 71F located on the front side is rounded at the periphery so that the bush 7 can be easily inserted into the through hole 212a from the rear.

  The valve 15 is inserted into the through hole 7 h of the bush 7 with the bush 7 fitted in the through hole 212 a. Thereby, the bush 7 is interposed between the through hole 212a and the valve 15.

  By interposing the bush 7 between the through hole 212a and the valve 15, the gap between the through hole 212a and the valve 15 is filled. Further, the valve 15 is prevented from rotating around the axis by friction generated by the bush 7 being interposed between the valve 15 and the through hole 212a.

  The valve 15 has three components. That is, as shown in FIGS. 3 and 7, a cylindrical outer case 51 and an inner case that is slidably fitted in the axial direction inside the outer case 51 and that has one end opened and the other end closed. 53 and a compression spring 55 interposed between the inner case 53 and the outer case 51. These are all on the same axis.

  In the outer case 51, the outer diameter of the outer case 51 and the inner diameter of the through hole 7h of the bush 7 are set so that the outer case 51 is fitted into the bush 7 in a tightly fitted state. The outer case 51 has an overhanging flange 511 on the outer peripheral surface thereof. The overhanging flange 511 is used to position the outer case 51 in the axial direction when the valve 15 is installed on the partition wall 5fp.

  As shown in FIG. 7, the projecting flange 511 has an outer diameter slightly smaller than the outer diameter of the projecting flange 72 of the bush 7.

  Further, the outer case 51 is formed with holes of different sizes in the center of both end surfaces. That is, there are a front end through hole 513f formed in the front end surface 51f and a rear end through hole 513r formed in the rear end surface 51r, but the rear end through hole 513r is smaller than the front end through hole 513f (FIG. 2). 3 and 7).

  Among the through holes 513f and 513r, the rear end through hole 513r is configured to remove a part of the water supplied from the water supply pipe 2 and drawn into the water supply pipe connection portion 5 which is a water tank body by the operation of the flash valve 3. It is a hole for introduction into the case 51. Further, the front end through hole 513f is a hole for introducing water that has passed through the valve 15 into the rim 13.

  Further, the outer wall of the outer case 51 is formed with a plurality of rear openings 514 that are located behind the projecting flange 511 and forward openings 516 that are also located forward (this implementation). In the example, two rear openings 514 and one front opening 516 are formed, one each in the vertical direction).

  The front side opening 516 is provided at a location separated from the overhanging flange 511 in the axial direction by an amount corresponding to the length of the bush 7.

  The rear side opening 514 is an opening for introducing a part of the water drawn into the water supply pipe connecting portion 5 into the inner case 53. The front side opening 516 is an opening for discharging water that has entered the inner case 53. All the openings 514 and 516 are formed at equal intervals in the circumferential direction of the outer case 51. The rear side opening 514 has a larger diameter than the front side opening 516.

  As described above, the inner case 53 is a cylindrical case that is open at the front end (one end) and closed at the rear end (the other end) and is closed at the other end. The inner diameter of the outer case 51 and the outer diameter of the inner case 53 are set so that the inner case 53 can smoothly slide in the outer case 51. That is, the inner diameter of the outer case 51 is slightly larger than the outer diameter of the inner case 53.

  The length of the inner case 53 is approximately 2/3 that of the outer case 51. Similarly to the outer case 51, the inner case 53 has an opening 534 formed on the outer peripheral wall. A plurality of openings 534 are formed at equal intervals in the circumferential direction at a substantially central portion in the axial direction of the inner case 53. The outer case 51 has two types of openings 514 and 516 formed in the outer peripheral wall. However, in the case of the inner case 53, the opening 534 is only formed in the outer peripheral wall.

  Further, even if the inner case 53 is movable in the axial direction with respect to the outer case 51, it cannot be rotated around the axis. For this purpose, for example, it is conceivable that a convex portion (not shown) extending in the axial direction is formed on the inner surface of the outer case 51 and a concave portion slidably fitted to the convex portion is provided on the outer surface of the inner case 53.

  When the inner case 53 moves in the axial direction in the outer case 51, a gap S is formed between the closed end 53r of the inner case 53 and the rear end surface 51r of the outer case 51 (see FIG. 7). The gap S is reduced by the compression spring 55 being compressed in the axial direction against its elasticity by the water (see arrows in FIGS. 7B and 7C) that has entered the gap S via the through hole 513. Thus, the inner case 53 is a space formed by moving forward in the outer case 51. The gap S when the inner case 53 moves the outer case 51 forward to the maximum is maximized.

  Next, the compression spring 55 will be described. The compression spring 55 has a length that is accommodated in the inner case 53 by about 2/3 in a state where no load is applied to the compression spring 55. When the inner case 53 is put in the outer case 51 together with the compression spring 55 in a state where no load is applied, the inner case 53 is in a state farthest from the front end of the outer case 51 (FIG. 7 ( a)).

  At this time, the front end of the compression spring 55 contacts the inner surface of the one end (front end) of the outer case 51, and the compression spring is applied to the inner surface of the other end (rear end) of the inner case 53 positioned on the other end side of the outer case 51. The rear end of 55 abuts. This is a state when no hydraulic pressure is applied to the compression spring 55, and the position of the inner case 53 at that time in the outer case 51 is referred to as an initial position.

The compression spring 55 is moved by the inner case 53 moving in the outer case 51 due to the water pressure of water flowing into the valve 15 from the rear end through hole 513r formed in the rear end surface 51r of the outer case 51. Compressed while resisting the water pressure (see FIG. 7B). The rear end through hole 513r is an introduction hole for introducing water into the outer case 51.

  Further, as the amount of water increases, the inner case 53 further proceeds under water pressure, and the tip of the inner case 53 comes into contact with the front end surface 51f of the outer case 51, so that the inner case 53 cannot move any further. Come (see FIG. 7C). The case where the inner case 53 is at the position is referred to as the inner case 53 being at the stop position.

  There is no flow of water at the stop position. This is because there is no water flow through any hole formed in the inner and outer cases. For this reason, water does not flow into the valve 15. Therefore, the water flowing from the water supply pipe 2 is thereafter stored in the flow path 52L and the reservoir tank 52R. Thus, the storage destination of the valve 15 differs depending on whether water flows into the valve. That is, it is referred to as means for switching the water flow path, that is, the flow path switching valve 15.

  In short, the valve 15 has a rim 13 according to the moving distance in the outer case 51 of the inner case 53 that moves by receiving the pressure of water that has entered the outer case 51 from the rear end through hole 513r formed in the outer case 51. It can be said that the water supply amount in each of the rim 13 and the flow path 52L is controlled by switching to the first water path for flowing water toward the second path or the second water path for flowing water toward the flow path 52L. The first water channel may be a water channel that guides the water that has exited from the valve 15 toward the rim 13, and the second water channel is that that guides the water that has exited from the valve 15 toward the channel 52L. Any channel that can be used.

  In addition, when the inner case 53 exists in the state of Fig.7 (a), (b), water flows in into the flow-path switching valve 15, and the flow of water arises. For this reason, when the inner case is in the state of FIGS. 7A and 7B with respect to the stop position of FIG. 7C, the inner case is in the flowing position.

  When the inner case 53 reaches the stop position, the openings 514 and 516 formed on the outer peripheral wall of the outer case 51 are blocked by a portion 536 of the outer peripheral wall of the inner case 53 where the opening 534 is not formed. (See FIG. 7C). In the closed state, a certain amount of remaining water exists in the rim 13. The remaining water is prevented from flowing out due to the surface tension of the water even if there are many small holes 131.

  The use of the remaining water will be described in Example 2.

  As described above, when the inner case 53 is at the stop position, the lengths of the outer case 51 and the inner case 53 are adjusted so that the openings 514 and 516 of the outer case 51 are closed by the portion 536 of the inner case 53. The size and position of the openings 514 and 516 of the case 51 and the size and position of the portion 536 of the outer peripheral wall of the inner case 53 where the opening 534 is not formed are set.

  When the water pressure is no longer applied to the inner case 53, the compression spring 55 has elasticity that pushes the inner case 53 to the initial position and returns to the original length. For this reason, the opening 514 and 516 of the outer case in the initial position is opened because it is not blocked by the portion 536 of the inner case 53 (see FIG. 7A).

Thus, when the inner case 53 is at the stop position, the openings 514 and 516 of the outer case 51 are closed by the portion 536 of the inner case 53, and when the inner case 53 is in the running water position. In order to allow water to flow into the flow path switching valve 15, the lengths of the outer case 51 and the inner case 53, the sizes and locations of the openings 514 and 516 of the outer case 51, and the opening 534 of the outer peripheral wall of the inner case 53. The size and position of the portion 536 where no is formed is set. Further, the amount of water flowing from the water supply pipe connecting portion 5 to the rim 13 from the initial position to the stop position and the amount of water stored in the stored water tank 52R for storing water are also determined in advance. Since the amount is the sum of the amount of water flowing through the rim 13 and the amount of water stored in the reservoir tank 52R, water is not unnecessarily consumed to store the water.

  7A and 7B, in the case where the inner case 53 is present, water flows into the flow path switching valve 15 and water flows through the rim 13 via the valve 15. Needless to say, the flow rate when jet cleaning is performed is larger than the flow rate. This is because the toilet bowl is sufficiently washed by using not only siphon phenomenon but also jet washing.

  Next, the function and effect will be described with reference to FIG.

  By operating operation means such as the drainage button and drainage handle provided on the flash valve 3, the water stops after the toilet 1 has been drained for a certain period of time. As a result, the toilet 1 is washed and water is stored. This operation is called a cleaning operation. The cleaning operation includes the following steps. Among the plurality of steps, the steps of the rim cleaning S123, the jet cleaning S234, and the makeup water S45 from the tank are executed concurrently with the execution of steps S1 to S5.

  In S1, water is caused to flow from the water supply pipe 2 to the toilet 1 by operating the operation means. That is, this is a step in which running water to the toilet 1 is started. After a while, a siphon phenomenon occurs, the amount of water stored in the toilet bowl decreases rapidly, and the surface of the stored water drops rapidly, resulting in drainage.

When S1 is executed, water is stored in the water supply pipe connecting portion 5 that is a water tank body, and the flow path switching valve 15 provided in the water supply pipe connecting portion 5 is opened according to the amount of water stored (see FIG. 7A). While the flow path switching valve 15 is open, water is supplied to the rim 13, and water is discharged from the numerous small holes 131 provided in the rim 13 to perform rim cleaning for cleaning the surface of the ball portion 11. (See rim cleaning in FIG. 8).

  The rim 13 is connected to the water supply pipe connection part 5 via the rim connection part 133. Since the rim 13 has a ring shape, the water that has entered the water supply pipe connection part 5 passes through the rim connection part 133. It branches into a bifurcated shape and is supplied to the rim 13. For this reason, since the water that has entered the rim 13 can be supplied to the rim 13 from both the left and right sides, the rim cleaning can be performed quickly.

  Then, when the amount of water supplied to the water supply pipe connecting portion 5 increases (see FIG. 7B), the flow path switching valve 15 starts to be closed in the next step S2. Therefore, S2 is referred to as a valve closing start step. Further, the jet cleaning described above is disclosed at a time somewhat earlier than the closing start timing of the flow path switching valve 15 in step S2 (see jet cleaning S234 in FIG. 8).

  Thereafter, when the amount of water supplied to the water supply pipe connecting portion 5 further increases, in the next step S3, the closing of the flow path switching valve 15 is completed (see FIG. 7C). Therefore, S3 is referred to as a valve closing completion step. Completion of valve closing in S3 means the end of rim cleaning S123 (see rim cleaning S123 in FIG. 8). Between S2 and S3 is a period during which both rim cleaning S123 and jet cleaning S234 are executed.

The rim cleaning is completed in synchronization with the completion of the valve closing in S3. At this time jet cleaning S
234 is continued. However, after that, for a while, only the jet cleaning S234 is executed alone, and after a while, the jet cleaning S234 is also ended. The completion of both the rim cleaning and the jet cleaning is referred to as completion of running water, and is indicated by step S4. Also, some time before the completion of running water, that is, in synchronism with the end of jet cleaning, the water stored in the reservoir tank 52R is started to be supplied as supplementary water for the stored water (the tank in S45). To make-up water).

  Thereafter, after a while, the water stored in the reservoir tank 52R disappears. This is called stoppage of makeup water and is executed in step S5.

  Stopping the supply of makeup water means that the stored water is full. That is, replenishment is started from a stage slightly before the completion of running water in step S4, and the replenishing water for reserving water is supplied from the through-passage 521R of the reserving water tank 52R until the replenishing water stoppage in step S5. .

In the toilet 1 of the first embodiment, a jet jet is generated in addition to causing a siphon phenomenon, and thus there is a momentum of water flowing into the toilet. Therefore, even if the amount of water used in the toilet 1 is small, the stool can be washed away. Therefore, water can be saved more than before. In addition, of the water supplied to the toilet 1 through the water supply pipe 2, the amount of water for storage can be secured by the flow path switching valve 15 and the amount of water stored in the storage water tank 52R. Since the amount of stored water is a predetermined amount, there is no waste in storing water. For this reason, this also contributes to water saving. Furthermore, since the flow amount of the water flowing through the rim is limited by the flow path switching valve 15, the water passing through the rim does not run down during the period until the water stops after the water is discharged to the toilet for a certain period of time. . Therefore, this contributes most to water saving.
(Example 2)
A second embodiment will be described with reference to FIG.

  The difference between the second embodiment and the first embodiment is that the water stored in the small holes 131 of the rim 13 is used to cover all the stored water. In this case, even when the rim cleaning is performed, the rim 13 has a certain amount of remaining water, so that it is applied as stored water without wasting it. Therefore, in the second embodiment, the through passage 521R of the stored water tank 52R of the first embodiment can be eliminated.

  The water that is to be stored in the reservoir tank 52R in the first embodiment is applied, for example, as jet cleaning or as the reservoir water that exits from the small hole 131 of the rim 13.

  FIG. 9 differs from FIG. 8 after step S5 for storing water. Steps S1 to S4 are the same as those in the first embodiment. The same applies to the point in time at which the rim cleaning and jet cleaning that occur between steps S1 to S4 are executed. Therefore, in the second embodiment, these descriptions are omitted, and the description starts from S5. S5 to S8 are steps for using the water remaining in the rim from the large number of small holes 131 provided in the rim 13 as the stored water.

  In S5, the flow path switching valve 15 is opened from the state shown in FIG. 7C to the state shown in FIG. By doing so, air flows in the rim 13. That is, in the state of FIG. 7C, the remaining water was prevented from flowing out from the small holes 131 by the surface tension, and the water as the accumulated water was not replenished from the rim 13. Therefore, the rim cleaning S123 was stopped (see S3). However, it breaks when it becomes the state of FIG. 7A in step S6. As a result, the remaining water flows out from the small hole 131 and is stored on the bottom surface of the ball as stored water in step S7. From the end of step S5 to the end of step S7, makeup water is supplied from the rim 13 (see S67).

  The volume of the rim 13 and the amount of remaining water are determined in advance so that the sealed water depth h can be secured also by the total amount of the remaining water.

  After a while, the water remaining on the rim 13 is also lost. This is called stoppage of makeup water and is executed in step S8. Stopping the supply of makeup water means that the stored water is full.

  The present invention can also be applied to a tank-type toilet.

  Further, the flow path switching valve may not be a mechanical type as in the present embodiment, but an electromagnetic valve may be used.

DESCRIPTION OF SYMBOLS 1 Toilet 2 Water supply pipe 3 Flash valve 4 Horizontally drainage pipe 5 Water supply pipe connection part (water tank body)
5f Front wall 5fp Bulkhead 6 Drainage pipe connection part 7 Bush 7h Bushing hole 10 Toilet body 11 Ball part 11j Jet jet hole 12 Outer part 13 Rim 15 Valve (switching means)
DESCRIPTION OF SYMBOLS 15 Flow path switching valve 41 Drainage connection adapter 50 Water receiving tank part 51 Outer case 51f Front end surface 51r Rear end surface 52L The flow path which connects a water tank body and a feces discharge hole 52R Reservoir tank 53 Inner case 53r Closed end 55 Compression spring 71F Overhang flange 72 Overhang flange 111 Stool discharge hole 111a Front edge 131 Small hole 133 Rim connection part 133F Projection wall 141 Stool discharge path 141a Trap rise pipe 141b Trap drop pipe 141b1 Outer corner part 141b2 Inner corner part 212a Through hole 511 Overhang flange 513 Through hole 513f Front end penetration Hole 513r Rear end through hole (introduction hole)
514 Rear side opening 516 Front side opening 521R Through passage (through hole)
534 Opening 536 Part L Inversion S Clearance h Sealing depth

Claims (5)

A ball portion having a rim for receiving stool and having a hollow and a plurality of holes formed as an outer edge of the toilet;
A water tank body in which water supplied from the water supply pipe to the ball portion is supplied before the ball portion;
A stool discharge hole formed in the ball portion for discharging the stool together with water toward the drain pipe;
A flow path connecting the water tank body and the fecal discharge hole,
A partition wall provided between the rim and the water tank body;
A flush toilet having a switching means that is formed in the partition wall and controls the amount of water supplied to each of the rim and the flow path. Siphon jet type is applied as a washing method, a flush valve that uses the water pressure of the water supply pipe connected to the toilet as it is, a flush toilet that discharges feces together with water to the drain pipe by operating the flush valve,
A ball portion having a rim for receiving stool and having a hollow and a plurality of holes formed as an outer edge of the toilet;
A water tank body that is integrally formed with the ball portion and when the flush valve is operated, water supplied from the water supply pipe is supplied before being supplied to the ball portion;
A stool discharge hole formed at the bottom of the ball portion for discharging the stool together with water toward the drain pipe;
A flow path connecting the water tank body and the fecal discharge hole,
A partition wall provided between the rim and the water tank body;
A flush toilet having a switching means that is formed in the partition wall and controls the amount of water supplied to each of the rim and the flow path. The switching means is
An outer case,
An inner case that moves inside the outer case;
An elastic body interposed between the inner case and the outer case,
The outer case is formed with an introduction hole for introducing water into the outer case in order to apply water pressure to the inner case,
Depending on the degree of movement distance in the outer case of the inner case that moves by receiving the pressure of water that has entered the outer case from the introduction hole, toward the first water channel or the flow channel that flows water toward the rim. The flush toilet according to claim 1 or 2, wherein the flush toilet is switched to a second water channel through which water flows. A supply means for supplying water for sealing the stool discharge hole of the ball portion;
The supply means includes a tank provided in the water tank body,
The flush toilet according to any one of claims 1 to 3, further comprising a through-hole penetrating the tank and the ball portion. A flushing toilet system in which a siphon jet type is applied as a washing method, a flush valve that uses the water pressure of a water supply pipe connected to the toilet bowl is used as it is, and stool is discharged into a drain pipe together with water by operating the flush valve. ,
The toilet is
A ball portion having a rim for receiving stool and having a hollow and a plurality of holes formed as an outer edge of the toilet;
A water tank body that is integrally formed with the ball portion and when the flush valve is operated, water supplied from the water supply pipe is supplied before being supplied to the ball portion;
A stool discharge hole formed at the bottom of the ball portion for discharging the stool together with water toward the drain pipe;
A flow path connecting the water tank body and the fecal discharge hole,
A partition wall provided between the rim and the water tank body;
A flow path switching means that is formed in the partition wall and switches to a first water channel that flows water toward the rim and a second water channel that flows water toward the flow channel, and supplies water to the newly switched channel. Have
A flush toilet system in which the flow amount flowing through the second water channel is larger than the first water channel by the flow channel switching means.

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