JP2009097174A - Toilet bowl flushing tank device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet bowl flushing tank device which includes a mechanism for switching between feces flushing and urine flushing, and which can perform the operation of surely switching between the feces flushing and urine flushing, by enabling a feces passing hole, provided in a control cylinder, to be opened/closed by a weak force. <P>SOLUTION: A drain outlet 32 is opened in a prescribed portion in a tank body 1; a drain valve 3 is constituted by openably/closably seating a drain valve 31 in the drain outlet 32; a float body 7 is attached to the drain valve body 31, and housed in the control cylinder 5; and a urine passing hole 52 and the feces passing hole 53 are each opened in the lower portion of the control cylinder 5, and connected to connecting members 10 and 11 which are pulled up by the turning of an operating handle 8, and a pilot valve 4 for urine flushing, which is arranged in the state of abutting on the drain valve body 31 and the feces passing hole 53 of the control cylinder 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a toilet bowl cleaning tank apparatus, and more particularly to a toilet bowl cleaning tank apparatus capable of switching the amount of water supplied to the toilet bowl to the large side or the small side by rotating the operation handle.

  In the conventional toilet bowl cleaning tank device, as shown in, for example, Patent Document 1 (Patent No. 3206263), by rotating the turning direction of the operation handle provided in the tank body to the large side or the small side, There is one that selectively switches between large washing that supplies all of the washing water stored in the toilet to the toilet and small washing that supplies water while leaving a predetermined amount of washing water in the tank body, thereby saving water .

Japanese Patent No. 3206263

9 to 12 show a toilet bowl cleaning tank device described in Patent Document 1. FIG.
This toilet bowl cleaning tank apparatus 100 is provided with a drain valve 3 for supplying cleaning water to the toilet bowl on the bottom surface inside the tank body 101, and an operation handle 104 for opening the drain valve 3 on the upper peripheral wall of the tank body 101. In addition, a ball tap faucet 102 is provided for replenishing water supplied from a water supply source to a water supply level in the tank body every time toilet cleaning is performed. The upper end port of the water supply pipe 112 that connects the tank main body 101 and the toilet bowl is fitted into the opening on the bottom surface of the tank main body 101, and the upper end port of the water supply pipe 112 is configured as a drain outlet 132. The drain port 132 constitutes the valve port of the drain valve 103, and opens upward on the bottom surface in the tank body 101, and the drain valve body 131 is seated on the drain port 132 from above.

  The disc-shaped drain valve body 131 is attached and fixed to the lower end of the overflow pipe 115, and a hole 131a through which water flowing down the overflow pipe 115 passes through the drain port 132 is formed in the center thereof. The overflow pipe 115 passes through a center portion of the control container 105 described later, and is supported by the control container 105 so as to be vertically slidable. The control container 105 is a substantially flat D-shaped container having an open top surface, and is installed at a position slightly above the bottom surface in the tank body 101 by being attached to and supported by the bottom surface of the tank body 101 via the legs 114. is there. In addition, the middle tube portion 105a is vertically penetrated through the central portion of the control vessel 105, and the overflow pipe 115 is slidably inserted along the inside of the middle tube portion 105a. A drainage valve body 131 provided at the lower end of the pipe is brought into contact with the bottom surface of the control container 105 at the rising end, thereby setting an upper limit of levitation by the float body 107 described later.

  From the upper outer periphery of the overflow pipe 115, two connecting members 113 extending into the control container 105 avoiding the middle cylinder portion 105 a are protruded, and hollow floats 107 are respectively attached to the lower ends of these connecting members 113. It is fixed. The float body 107 is a hollow body that generates a buoyancy sufficient to float the overflow pipe 115 and the drain valve body 131. The float body 107 is housed in the control container 105 and integrated with the connecting pipe 113. Along with the vertical movement, the container 5 is supported so as to rise and fall.

  An outlet 108 is opened in the flat portion 105 b on the side wall of the control container 105, and an open / close valve lid 109 is provided outside the outlet 108. The outlet 108 is used to allow the water in the control container 105 to flow out in a short time during the small cleaning, and is a predetermined height from the bottom surface in the tank main body 101, that is, the water level in the tank main body during the small cleaning. Opened to a low level. On the other hand, the on-off valve lid 109 provided at the outlet 108 is formed in a plate shape as shown in FIGS. 9 and 11 and is provided so as to be applied to the outlet 108 opened on the side wall of the control container 105 from the outside. Guide shafts 191 that extend vertically downward are provided on both sides of the valve lid 109, and the guide shafts 191 are provided in sliding holes 192 that are provided vertically along both sides of the outlet 108. On the other hand, the outlet 108 is slidably inserted from above to slide up and down to close the outlet 108 so as to be opened and closed. Normally, the above-described on-off valve lid 109 maintains a closed state by its own weight, but when the connecting member 111 connected to the upper part is pulled up by the turning operation of the operation handle 104, the valve is raised and opened. When the member 111 is loosened, it is lowered again by its own weight and closes the outlet 108.

  The guide shaft 191 slides so as to be inserted into the slide hole 192 when the on-off valve lid 109 is lowered. The lower end of the slide hole 192 is narrowed to a small diameter, and the guide shaft 191 is slid. As the inside of the moving hole 192 descends, the water filling the sliding hole 192 is ejected to the outside through the small diameter hole 193, and an appropriate resistance is generated at that time, and the lowering of the on-off valve lid 109 is delayed. It is supposed to let you. The above-described resistance is obtained by providing an appropriate clearance between the guide shaft 191 and the sliding hole 192 without providing the small-diameter hole 93, and the water between the inside of the sliding hole 192 and the outside through this clearance. It can be generated even if it is configured to enter and exit. Therefore, the opening / closing valve lid 109 is pulled up by the operation of the operation handle 104, and then, when the opening / closing valve lid 109 is closed by its own weight, the guide shaft 191 is lowered to eject from the inside of the sliding hole 192 through the small diameter hole 193. To do. At this time, a necessary resistance is generated in the guide shaft 191, and the opening / closing valve cover 109 slowly descends over time due to this resistance. A small through hole 116 is formed in the bottom surface of the control container 105. This small through hole 116 is for draining the water in the control container 105 little by little to lower the float 107 in the container 105 over time, and the water filling the container 105 is in the lower part of the container. It is set to a diameter that can flow out over a predetermined time until the float body 7 is lowered to the lowering position, for example, the time from the start of draining of the washing water in the tank body until the drainage is completely completed.

  The operation handle 104 provided at the upper part of the peripheral wall of the tank main body 101 includes a rotation shaft 141 extending horizontally into the tank main body 101 and a lever 142 protruding downward, and the rotation shaft 141 is fitted to the peripheral wall of the tank main body 101. By being inserted into the worn support cylinder 111 from the outside, it is supported so as to rotate by a predetermined angle from side to side. Further, the rotation direction of the operation handle 104 is determined in accordance with the large washing and the small washing. When the handle 104 is turned to the left with the position where the lever 142 faces downward, the large washing is performed. When it is turned to the right, small washing is performed.

  A rotary pipe 161 is fitted on the outer periphery of a rotary shaft 141 that extends horizontally into the tank body 101, and an arm piece 162 that pulls up the drain valve body 131 and a pull-up valve that raises the on-off valve lid 109. The arm pieces 163 are attached facing downward. A connecting member 110 made of a chain or the like is suspended from the arm piece 162, and the lower end of the connecting member 110 is connected to the upper end of the overflow pipe 115 without slack. The lifting arm piece 163 includes a fixed piece 164 fixed to the outer periphery of the rotary tube 161, and a rotary piece 166 supported on the intermediate portion of the fixed piece 164 via a rotary shaft 165. A locking piece 167 is bent at one side of the tip. The connecting member 111 is suspended from the tip of the rotating piece 166, and the lower end of the connecting member 111 is connected to the upper part of the opening / closing valve lid 109 in a somewhat slackened state. Therefore, when the operation handle 104 is rotated to the large side, the rotating piece 166 hangs down from the rotating shaft 165 of the fixed piece 164 rotated by a predetermined angle toward one side as shown in FIG. The connecting member 111 is pulled up small. In this pulling up, since the pulling stroke is small, the opening / closing valve lid 109 is kept closed only by loosening the connecting member 111. Further, when the operation handle 104 is rotated to the small side, the fixed piece 164 is rotated by a predetermined angle and the rotary piece 166 locked to the locking piece 167 is rotated so as to extend the fixed piece 164. Accordingly, the connecting member 111 is pulled up with a large stroke, and the on-off valve lid 109 is opened.

  By the above means, at the time of small cleaning, the opening / closing valve lid is largely pulled up through the connecting member by the rotation of the operation handle, and the outlet of the control container is opened. On the other hand, at the time of large cleaning, the amount of pulling up by the connecting member is small, and the on-off valve lid is kept closed. Further, the open / close valve lid that is lifted during the small washing is lowered by its own weight, but the lowering is delayed for a predetermined time by the lowering delay mechanism. Therefore, during the delay time, the on-off valve lid is opened, whereby the water in the control container quickly flows out from the outlet and the drain valve body is closed earlier. As a result, residual washing water is generated in the tank, and the residual water and the amount of water supplied to the toilet are reduced.

  The above-described conventional toilet flushing tank device controls the valve opening time of the drain valve body 131 by delaying the valve lid 109 at the outlet 108 opened in the flat portion 105b of the side wall of the control container 105. Although the water outflow speed is varied, the valve lid 109 is delayed closed by a guide shaft 191 extending vertically downward on the side of the valve lid 109 and both sides of the outlet 108. Since it is configured by a damper mechanism that uses water leaking from the clearance with the sliding hole 192 provided vertically along the portion, the scale deposits from the minute dust and cleaning water present in the tank body 101 in the clearance. As a result, the valve lid 109 failed to open. Further, the damper effect also functions when the valve lid 109 is opened. Therefore, an excessive valve opening load is required to open the valve lid 109, the operating force of the operation handle 104 is increased, and the connecting member 111 is disconnected. There were problems such as.

  The object of the present invention is to reliably open and close the large and small washing by opening and closing the outlet provided in the control cylinder with a light force with respect to the toilet flushing tank apparatus having the switching mechanism between the large washing and the small washing as described above. An object of the present invention is to provide a toilet bowl cleaning tank device capable of switching the operation of the toilet bowl.

  In order to solve the above-mentioned object, the toilet flushing tank apparatus according to claim 1 of the present invention opens a drainage port that communicates with the toilet bowl at the bottom of the tank body upward, and a valve port constituted by the drainage port. The drain valve body is configured to be openable and closable from above, and a drain valve is mounted on the drain valve body. A direct valve float is attached to the drain valve body, and the float is spaced from the inner bottom of the tank body. Is placed in a control cylinder installed at a predetermined height so that it can be moved up and down, and the upper part of the control cylinder is opened, and a small passage for delay closing is opened at the lower part of the control cylinder. A large through hole communicating with the downstream side of the drain port is provided in the lower part of the control cylinder, and one of the two connecting members pulled up by the operating means provided in the upper part of the tank body is used as the drain valve body, and the other The large through hole of the control cylinder can be opened and closed When the small cleaning is selected by the operation means, the two connecting members are pulled up to open the drain valve body and the small cleaning pilot valve. When a large cleaning is selected by the means, only the one lifting means is lifted to open the drain valve body and to close the small cleaning pilot valve. It is.

  Further, in the toilet flushing tank device according to claim 2, a storage portion for slidably storing the small cleaning pilot valve provided in the control cylinder, and an outer peripheral surface of the small cleaning pilot valve or the And a rib projecting from the inner wall surface of the storage portion toward the other.

  The toilet bowl cleaning tank device according to claim 3, wherein a cylindrical member having an inner diameter smaller than that of the storage portion is provided at an upper portion of the storage portion, and the cylindrical member is connected to the small cleaning pilot valve. The member is configured to be inserted.

  Moreover, the cylindrical member of Claim 4 is set as the structure which expands gradually toward a tank upper direction.

  As described above, according to the present invention, by selecting the rotation direction of the operation handle from the large side and the small side, the large through hole communicating with the downstream side from the drain port is formed in the lower portion of the control cylinder. By starting drainage from the drainage valve with the valve closed or open, and changing the water level lowering time in the control container, the timing of closing the drainage valve is slow (large washing) and early ( Small wash), and is configured to selectively switch the amount of washing water drainage performed on the toilet from within the tank body. It is no longer necessary to have a damper mechanism on the valve lid that controls the outflow of water, and the large through hole provided in the control cylinder can be opened and closed with a light force, so that the large and small washing can be switched reliably.

  The toilet cleaning tank device according to claim 2, wherein the contact area between the small cleaning pilot valve and the storage portion provided in the control cylinder is reduced, and the pilot valve opening load is reduced by reducing the sliding resistance between the pilot valve and the storage portion. In addition, it is possible to prevent the pilot valve from being poorly opened due to dust trapped between the pilot valve and the storage portion.

  In the toilet flushing tank apparatus according to claim 3, the connecting member is raised and lowered along the inner wall of the cylindrical member, and the small washing pilot valve is opened in a substantially vertical direction, whereby the small washing pilot valve and the storage portion are opened. Therefore, the pilot valve opening load due to the reduction of the contact resistance between the pilot valve and the storage portion can be reduced.

  In the cylindrical member according to the fourth aspect, since the connecting member rises and descends along the gradually enlarged portion of the cylindrical member, the connecting member can be prevented from being bent by preventing the connecting member from being bent.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a front view of a toilet bowl cleaning tank apparatus according to the present invention, partially cut away. The toilet bowl cleaning tank device a shown in FIG. 1 is installed in the upper part of a toilet bowl (not shown), and a drain valve 3 for supplying cleaning water to the toilet bowl is provided on the bottom of the tank body 1 made of ceramics. An operation handle 8 for opening the valve and a ball tap faucet 2 for replenishing the water supplied from the water supply source to the water supply level in the tank body each time the toilet bowl is cleaned are provided. The upper end port of the water supply pipe 12 that connects the tank main body 1 and the toilet bowl is fitted into the opening on the bottom surface of the tank main body 1, and the upper end port of the water supply pipe 12 is configured as a drain port 32. The drain port 32 constitutes the valve port of the drain valve 3, opens upward on the bottom surface in the tank body 1, and the drain valve body 31 is seated on the drain port 32 from above.

  The disc-shaped drain valve body 31 is attached and fixed to the lower end of the overflow pipe 15, and a hole 31 a through which water flowing down the overflow pipe 15 passes through the drain port 32 is formed at the center thereof. The overflow pipe 15 passes through the center portion of the control cylinder 5 described later, and is supported by the control cylinder 5 so as to be vertically slidable. The control cylinder 5 is a cylindrical container having an upper surface opened, and is installed at a position somewhat above the bottom surface in the tank main body 1 by fitting to the water supply pipe 12. The control cylinder 5 described above may have a shape other than a cylindrical shape. Further, a drain valve body 31 provided at the lower end at the upper end of the overflow pipe 15 along the inside of the middle cylinder portion 5a is provided in the central portion of the control cylinder 5 with the middle cylinder portion 5a penetrating vertically. The upper limit of the levitation by the float body 7 as a direct acting valve float in the present invention to be described later is determined.

  A flange portion 15 a is formed on the upper outer peripheral surface of the overflow pipe 15. The float 7 is formed by a cylinder 7a and a float 7b opened downward at the lower end of the cylinder 7a. A step portion 7c is formed on the upper portion of the cylindrical portion 7a so as to contact the upper surface of the flange portion 15a, and the overflow pipe 15 is inserted into the cylindrical portion 7a of the float body 7 from below the float body 7 so The overflow pipe 15 and the float body 7 were integrated by bringing 7c into contact and mounting the stop member 55 on the upper part of the overflow pipe 15. The float 7b is a lower opening container that generates buoyancy sufficient to float the overflow pipe 15, the drain valve body 31, and the stopper member 55. The float 7b is housed inside the control cylinder 5 and moves upward and downward with the overflow pipe 15. The control cylinder 5 is supported so as to rise and fall. In addition, the form of the float 7b is not restricted to a downward opening container, A cylindrical hollow body may be sufficient.

  A small through hole 51 is formed in the bottom surface of the control cylinder 5. This small through hole 51 is for draining the water in the control cylinder 5 little by little to lower the float 7 in the control cylinder 5 over time, and the water filling the control cylinder 5 is controlled. It is set to a diameter that can flow out over a predetermined time until the float body 7 is lowered to the lowering position of the lower part of the cylinder, for example, from the start of drainage of the wash water in the tank body 1 until the drainage is completely completed. . In addition, a large through hole 52 having an opening area larger than that of the small through hole 51 is opened at the lower portion of the control cylinder 5, and a water through cylinder 53 communicating with the large through hole 52 projects from the bottom of the control cylinder 5 to the bottom surface of the tank body 1. ing. The water supply pipe 12 is provided with an outlet 34 communicating with the downstream side of the upper end of the water supply pipe 12, and the outlet 34 and the water pipe 53 are communicated with each other through the connecting pipe 6. A small cleaning pilot valve 4 is disposed at the upper end of the large through hole 52. The pilot valve 4 for small cleaning is composed of a seal member 41 and a float 42. The seal member 41 is disposed at the lower end of the float 42, and the large through hole 52 is formed by contacting the bottom surface of the seal member 41 with the upper portion of the large through hole 52. Is blocked.

  The principle of closing the large through hole 52 by the small cleaning pilot valve 4 when storing the cleaning water in the tank body 1 will be described. First, when the drain port 31 is closed by the drain valve body 31, the outlet 34 of the water supply pipe 12 and the water pipe 53 at the bottom of the control cylinder 5 are connected by the connecting pipe 6 in the inner area from the seal position on the lower surface of the pilot valve 4 for small washing. Because it communicates, atmospheric pressure is acting. Further, the water head pressure acting on the upper surface portion of the small cleaning pilot valve 4 is applied depending on the water supply level in the tank body 1. For this reason, the small cleaning pilot valve 4 has a float 42 self-weight F1, a seal member 41 self-weight F2, and a pressure difference between the head pressure acting on the top surface of the small cleaning pilot valve and the atmospheric pressure acting on the bottom surface of the pilot valve. The generated load F3 acts, and the buoyancy F4 generated by the float 42 is generated in the upward direction of the tank. By setting the float capacity such that (F1 + F2 + F3)> F4, the large through hole 52 is closed by the seal member.

  Next, when the operation handle 8 as the operation means of the present invention is rotated to the large washing side, only the overflow pipe 15 is pulled up and the drain port 32 is opened, the large through hole 52 by the small washing pilot valve 4 is provided. The occlusion principle will be described. When the drain port 32 is opened, the cleaning water in the tank body 1 flows into the water supply pipe 12, and the inside of the water supply pipe 12 is filled with the cleaning water. Therefore, F3 described above is a pilot valve for small cleaning. Although the load changes due to the differential pressure between the water head pressure acting on the upper surface and the static pressure acting on the lower surface of the pilot valve, the static velocity acting on the lower surface of the pilot valve rather than the water head pressure due to the flow rate of water flowing in the water supply pipe 12. The pressure becomes smaller. Therefore, since F3 is still a load that acts downward in the tank, the small cleaning pilot valve 4 is biased toward the large through hole 52 and maintains the large through hole 52 closed.

  The operation handle 8 provided at the upper part of the peripheral wall of the tank main body is provided with a rotating shaft 81 extending horizontally into the tank main body 1 and a lever 82 protruding downward, and the rotating shaft 81 is fitted to the peripheral wall of the tank main body 1. By being inserted into the worn support cylinder 83 from the outside, it is supported so as to rotate by a predetermined angle angle to the left and right. Further, the operation handle 8 has a rotation direction corresponding to the large washing and the small washing, and when the handle 82 is turned to the left around the position where the lever 82 faces downward, the large washing is performed. When it is turned to the right, small washing is performed.

  A small cleaning pilot valve lifting member 91 is inserted on the outer periphery of the rotating shaft 81 extending horizontally into the tank body 1, and then an overflow pipe lifting member 92 is fitted. The overflow pipe lifting member 92 rotates in conjunction with the rotation direction of the rotary shaft 81 to lift the overflow pipe 15 when the lever is rotated in either the large washing side or the small washing side.

  FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 and is a cross-sectional view showing the positional relationship between the small cleaning pilot valve 4 and the rotating shaft 81. The principle of rotation of the small cleaning pilot valve lifting member 91 will be described with reference to FIG. FIG. 2B shows a neutral position where the handle 82 is not operated. When the handle 82 is rotated from the neutral position to the small washing side as shown in FIG. 2A, the flip-up rib 81 a disposed on the outer periphery of the rotation shaft 81 jumps the pilot valve lifting member 91 for small washing. The small washing pilot valve 4 is brought into contact with the raising surface 91a and is rotated by the rib 81a via the springing surface 91a in synchronization with the rotation of the rotary shaft 81. The tank is pulled up. Next, when the handle 82 is turned to the large washing side as shown in FIG. 2C, the idle running angle α larger than the large washing side turning angle is provided between the rib 81a and the small washing pilot valve lifting member 91. Therefore, the rib 81a and the spring-up surface 91a of the small cleaning pilot valve lifting member 91 are not in contact with each other, and the small cleaning pilot valve lifting member 91 maintains its initial position by its own weight. The small cleaning pilot valve 4 is kept in contact with the large through hole 52 of the control cylinder 5.

  The operation of the toilet flushing tank apparatus a configured as described above will be described. Normally, the wash water is stored in the tank main body 1 up to the upper limit water level (WL in FIG. 1) in the tank main body 1 by water supplied by the ball tap water tap 2. In this state, the drain valve 3 is closed by the water head pressure, and the small washing pilot valve 4 is similarly closed by the water head pressure.

  When the user rotates the operation handle 8 to the large cleaning side during the large cleaning, the overflow pipe jumping member 92 rotates by a predetermined angle, and the connecting member 10 and the overflow pipe 15 are pulled up by this rotation, and the drain valve body. 31 opens. From this time point, supply of the washing water from the tank body 1 to the toilet is started. Further, the drain valve body 31 once opened is raised by the buoyancy by the float body 7 to maintain the valve open state. At this time, the small cleaning pilot valve 4 is maintained in the initial state by the operating principle of the small cleaning pilot valve 4 described above.

  When the water level in the tank main body 1 decreases with the drainage of the cleaning water and falls to the opening at the upper end of the control cylinder 5, the cleaning water in the tank main body 1 does not flow into the control cylinder 5 and further in the tank main body 1. A large amount of the wash water is drained from the drain port 32, and the water level rapidly decreases. In parallel with this, water in the control cylinder 5 flows out from the small through hole 51 on the bottom surface of the control cylinder 5 and the float body 7 also descends. However, since the outflow amount from the small through hole 51 is small, the control cylinder 5 The lowering of the internal water level is slow, and it falls slowly over time. Therefore, the upper end of the drainage port 32 in the tank body 1 (DWL1 in FIG. 1) until the above-described floating body 7 is lowered to the lower part in the control cylinder 5 and the drainage valve body 31 is seated on the drainage port 32. All of the wash water except the part below is drained and drainage is complete. That is, at the time of large washing, all the water that can be discharged by opening the drain valve 3 in the tank body 1 is drained. After the drain valve 3 is closed, water is supplied from the ball tap water tap 2 in the upper part of the tank body 1, and cleaning water is replenished to the upper limit water level in the tank body 1.

  When the operation handle 8 is rotated to the small cleaning side during the small cleaning, the overflow pipe lifting member 92 is rotated by a predetermined angle, the overflow pipe 15 is pulled up via the connecting member 10 and the drain valve body 31 is opened, and the toilet bowl is opened. Water supply to is started. At the same time, the small cleaning pilot valve lifting member 91 rotates in synchronism with the rotation of the overflow pipe lifting member 92, whereby the connecting member 11 is pulled up and the small cleaning pilot valve 4 is opened. When the water level in the tank main body 1 decreases with drainage and falls below the opening at the upper end of the control cylinder 5, the large through hole 52 of the control cylinder 5 is opened widely. The water level in the control cylinder 5 quickly flows out through 52, and the water level in the control cylinder 5 rapidly decreases at substantially the same speed as the water level in the tank body 1 decreases.

  A drainage valve that descends together with the float body 7 when the float body 7 in the control cylinder 5 descends to the bottom of the container 5 and the water level in the tank body 1 falls to the lower limit water level (DWL2 in FIG. 1) at the time of small washing. The body 31 sits at the drain port 32 and closes. Since the small cleaning pilot valve 4 also descends in the same manner as the float body 7, it closes substantially simultaneously with the closing of the drain valve body 31. At the time when the drain valve 3 is closed, flush water remains in the tank body 1 in the range below the lower surface of the control cylinder 5, and this residual water (the difference between DWL1 and DWL2) Therefore, the amount of cleaning water supplied will be reduced.

  As described above, in the toilet flushing tank apparatus a, as in the conventional case, an open / close valve lid for controlling the flow rate of water in the control cylinder is disposed on the side of the control cylinder, and the open / close valve It is not necessary to use a damper mechanism for delaying closing of the lid, and the outflow speed of water in the control cylinder 5 can be controlled by opening and closing the small washing pilot valve 4. Therefore, the small cleaning pilot valve 4 provided in the control cylinder 5 can be opened and closed with a light force, and the large and small cleaning can be switched reliably.

  Based on FIGS. 3 to 5, the relationship between the storage portion 54 in the control cylinder 5 and the small cleaning pilot valve 4 will be further described. 3 is a perspective view showing the storage portion 54 of the small cleaning pilot valve 4 disposed in the control cylinder, FIG. 4 is a perspective view showing the float 42 of the small cleaning pilot valve 4, and FIG. FIG. 6 is a top view showing the positional relationship between the storage portion 54 and the small cleaning pilot valve 4. As shown in FIG. 3, a storage portion 54 for storing the small cleaning pilot valve 4 is formed on the outer peripheral portion of the control cylinder 5. The storage portion 54 has a cylindrical inner surface and is connected to the control cylinder 5 by a slit-like communication path 54a. Further, as shown in FIG. 4, a rib 43 is formed to project from the outer peripheral surface of the float 42 of the small cleaning pilot valve 4 toward the other side. As shown in FIG. 5, the rib 43 is configured to face the inner wall of the storage portion 54. Accordingly, the operation handle 8 is rotated to the small washing side, and the small washing pilot valve 4 is moved upward. When pulling up, the inner wall of the storage portion 54 comes into contact with the rib 43. The rib 43 is not limited to a configuration in which the rib 43 protrudes from the outer peripheral surface of the float 42 of the pilot valve 4 for small cleaning, but a configuration in which the rib 43 projects from the inner peripheral surface of the storage portion 54 toward the other. Also good.

  By forming the rib 43 in a projecting manner, the sliding resistance between the storage portion 54 and the float 42 can be reduced. Therefore, the small cleaning pilot valve 4 provided in the control cylinder 5 can be opened and closed with a light force, and the large and small cleaning can be switched reliably.

Next, the operation of the connecting member 11 that connects the small cleaning pilot valve lifting member 91 and the small cleaning pilot valve 4 when the small cleaning pilot valve 4 is lifted will be described with reference to FIGS. .
6 is a cross-sectional view showing the positional relationship between the small cleaning pilot valve 4, the small cleaning pilot valve lifting member 91, and the connecting member 11. FIG. 7 is a cylindrical member above the storage portion 54 of the small cleaning pilot valve 4. FIG. 8 is a cross-sectional view showing a case where the upper end portion of the cylindrical member 55 is gradually enlarged as a modified example of the cylindrical member 55. As shown in FIG. 6 (b), the positional relationship between the small cleaning pilot valve 4 and the flip-up surface 91a of the small cleaning pilot valve lifting member 91 that lifts the small cleaning pilot valve 4 to the upper side of the tank is small cleaning. When the pilot valve 4 is closed, the flip-up surface 91a is positioned substantially vertically above the small washing pilot valve 4. That is, the connecting member 11 maintains a substantially vertical state. When the operation handle 8 is rotated to the small washing side (shown in FIG. 6 (a)), the small washing pilot valve 4 is lifted to the upper side of the tank through the lifting member 11 by the rotation of the flip-up surface 91a. . At this time, since the flip-up surface 91a rotates by a predetermined rotation angle, the flip-up surface 91a comes to a position deviated from the vertical upper side of the small washing pilot valve 4 at the end of the rotation of the flip-up surface 91a. That is, the connecting member 11 is also in a state where it cannot maintain the vertical with respect to the small cleaning pilot valve 4. The angle of deviation from the vertical direction at this time is β. Therefore, the small cleaning pilot valve 4 is not lifted in the vertical direction, but is lifted in a direction shifted by an angle β from the vertical direction. The position of the pilot valve 4 for small cleaning at this time is indicated by a broken line. As a result, the small cleaning pilot valve 4 is lifted upward while contacting the inner wall of the storage portion 54. Therefore, sliding resistance is generated between the outer wall of the float 42 of the pilot valve 4 and the inner wall of the storage portion 54, and the lifting load of the small cleaning pilot valve increases.

  Here, as shown in FIG. 7, a cylindrical member 55 having an inner diameter smaller than that of the storage portion 54 is disposed above the storage portion 54. When the connecting member 11 connected to the small cleaning pilot valve is inserted through the cylindrical member 55, the position of the flip-up surface 91a and the small cleaning pilot valve 4 is increased when the small cleaning pilot valve 4 is pulled up. Even if the relationship is shifted by an angle β, the connecting member 11 pulls up the small cleaning pilot valve 4 along the inner wall of the cylindrical member 55, so that the pilot valve 4 can be lifted upward while maintaining a substantially vertical state. The small washing pilot valve 4 provided in the control cylinder 5 can be opened and closed with a light force, and the large and small washing can be switched reliably.

Further, as shown in FIG. 8, by gradually expanding the upper end portion 55a of the cylindrical member 55, the bending of the connecting member 11 can be prevented and the sliding resistance between the connecting member 11 and the cylindrical member 54 can be reduced. The lifting load of the cleaning pilot valve 4 can be further reduced.

The front view which shows the toilet bowl washing tank apparatus which implemented this invention partly notched. Sectional drawing which shows the positional relationship of the pilot valve for small washing | cleaning, and a rotating shaft. The perspective view which shows the storage part of the pilot valve for small washing | cleaning arrange | positioned at the control cylinder. The perspective view which shows the float of the pilot valve for small washing | cleaning. The top view which shows the positional relationship of a storage part and the pilot valve for small washing | cleaning. Sectional drawing which shows the positional relationship of the pilot valve for small washing | cleaning, the pilot valve raising member for small washing | cleaning, and a connection member. Sectional drawing which shows the positional relationship of the pilot valve for small washing | cleaning, the pilot valve raising member for small washing | cleaning, and a connection member at the time of arrange | positioning a cylindrical member in the upper part of a storage part. Sectional drawing which shows the case where the upper end part of a cylindrical member is expanded gradually. The front view which shows the conventional toilet bowl washing tank apparatus. The enlarged view which shows the conventional drain valve part. The perspective view which shows the outflow port part of the conventional control container. The longitudinal cross-sectional view which shows the rotation state of the raising arm piece at the time of the conventional large washing | cleaning and the time of small washing | cleaning.

Explanation of symbols

a Toilet cleaning tank device 1 Tank body 3 Drain valve 4 Small cleaning pilot valve 5 Control cylinder 7 Floating body (Float for direct acting valve)
8 Operation handle (operating means)
DESCRIPTION OF SYMBOLS 10, 11 Connection member 12 Water supply pipe 15 Overflow pipe 31 Drain valve body 32 Drain port 43 Rib 51 Small through hole 52 Large through hole 54 Storage part 55 Cylindrical member 91 Pilot valve raising member for small cleaning (pickup member operating mechanism)
92 Overflow pipe lifting member (lifting member operating mechanism)

Claims (4)

A drainage port that opens to the toilet in the bottom of the tank body is opened upward, and a drainage valve body is seated on the valve port constituted by the drainage port so that the drainage valve can be opened and closed from above. A direct-acting valve float that floats the valve body is attached to the valve body, and the direct-acting valve float is movable up and down to the inside of a control cylinder installed at a predetermined height with a space from the inner bottom of the tank body. The control cylinder is opened, the upper part of the control cylinder is opened, a small passage hole for delay closing is opened at the lower part of the control cylinder, and a large through hole communicating with the downstream side of the drainage port is provided at the lower part of the control cylinder. One of the two connecting members pulled up by the operating means provided on the upper part of the tank main body is the drain valve body, and the other is the pilot valve for small washing supported so that the large through hole of the control cylinder can be opened and closed. Connected and small by the above operating means When cleaning is selected, the two connecting members are pulled up to open the drain valve body and the small cleaning pilot valve. When large cleaning is selected by the operating means, only the one lifting means is lifted up. A toilet flushing tank apparatus comprising a lifting member operating mechanism that opens the drain valve body and closes the small washing pilot valve. 2. The toilet flushing tank apparatus according to claim 1, wherein a storage unit that slidably stores the small cleaning pilot valve provided in the control cylinder, and an outer peripheral surface of the small cleaning pilot valve or the storage unit. And a rib formed to project from the inner wall surface to the other side of the toilet bowl cleaning tank apparatus. The toilet bowl cleaning tank apparatus according to claim 2, wherein a cylindrical member having an inner diameter smaller than that of the storage portion is provided at an upper portion of the storage portion, and a connecting member connected to the pilot valve for small cleaning is provided in the cylindrical member. A toilet bowl cleaning tank device characterized by being inserted. 4. The toilet bowl cleaning tank device according to claim 3, wherein the cylindrical member gradually expands toward the upper side of the tank.

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