JP2014066120A - Toilet bowl washing apparatus - Google Patents

Abstract

The present invention provides a toilet cleaning device that can reduce noise and perform toilet cleaning satisfactorily.
A toilet bowl cleaning device supplies flush water to a flush toilet bowl via a water supply channel. In the initial stage of draining the wash water from the drain port 15 and the tank 10 having the drain port 15 for storing the wash water and the stored wash water flowing out to the water supply channel 1 communicating with the downstream side, the wash water is flowed at a low flow rate. A drainage device 30 is provided that drains and increases the flow rate of the cleaning water drained from the drain port 15 due to the lowering of the level of the cleaning water in the tank 10.
[Selection] Figure 1

Description

  The present invention relates to a toilet bowl cleaning device.

  FIG. 4 of Patent Document 1 discloses a conventional toilet cleaning device. This toilet flushing apparatus includes a tank having a drainage port for storing washing water and draining the stored washing water, and an opening / closing valve for opening and closing the drainage port. The drain port communicates with the water supply channel downstream. This toilet flushing apparatus supplies flush water to a flush toilet through a water supply channel. The on-off valve is composed of a parent valve and a child valve that rotate about the same rotation axis. The parent valve rotates with the child valve to open and close the drain. The parent valve is provided with an opening having an opening area smaller than that of the drain port. The sub-valve rotates independently to open and close the opening provided in the parent valve. The child valve connects the wire for opening operation. The child valve and the parent valve are connected by a wire.

  The toilet cleaning device pulls up the wire connected to the child valve when performing toilet cleaning. Then, first, the child valve is raised to open the opening of the parent valve. As a result, the water is discharged from the drain outlet at a flow rate with a small amount of cleaning water (the flow rate refers to the amount of cleaning water flowing per unit time; the same applies hereinafter) and flows out into the water supply channel. At this time, residual water and residual air in the water supply channel are pushed out into the flush toilet. Thereafter, when the wire rod connected to the child valve is further pulled up, the wire rod connecting the child valve and the parent valve is pulled up, and the parent valve rises to open the drain port. As a result, the flow rate of the cleaning water drained from the drain port increases. At this time, since the residual water and residual air in the water supply channel are pushed out into the flush toilet, noise generated by the flow of flush water through the water supply channel and discharged into the flush toilet is generated. Can be reduced.

Japanese Patent No. 3925214

  However, in the conventional toilet flushing apparatus described above, the pulling timing of the child valve and the parent valve varies depending on the pulling speed of the wire connected to the child valve. That is, only the child valve is pulled up, and the time for which the washing water having a small flow rate is drained from the drain port varies. If the washing water with a low flow rate is drained from the drain outlet for a short time, the residual water and residual air in the water supply channel cannot be sufficiently pushed out into the flush toilet, and the washing water with a high flow rate passes through the water supply channel. There is a possibility that noise caused by flowing and being discharged into the flush toilet cannot be reduced. In addition, if the washing water with a low flow rate is drained from the drain port for a long time, the residual water and residual air in the water supply channel can be pushed out reliably, but the washing water with a large flow rate is drained from the drain port, There is a risk that the amount of flushing water discharged to the flush toilet through the road will be reduced, and toilet flushing cannot be performed satisfactorily.

  The present invention has been made in view of the above-described conventional situation, and it is an object to be solved to provide a toilet cleaning device that can reduce noise and perform toilet cleaning satisfactorily.

The toilet bowl cleaning device of the present invention is a toilet bowl cleaning apparatus that supplies flush water to a flush toilet bowl through a water supply channel,
A tank having a drain outlet for storing the wash water, and the stored wash water flowing out to the water supply channel communicating with the downstream side;
In the initial stage of draining the washing water from the drain port, the washing water is drained at a low flow rate, and the flow rate of the washing water drained from the drain port is increased by the lowering of the level of the washing water in the tank. It is characterized by having a drainage device.

  In the initial stage of draining the wash water from the drain port of the tank, this toilet flushing device pushes the residual water and the residual air in the water supply channel with a small flow rate of the wash water. For this reason, even if wash water with a large flow rate is drained from the drain outlet after that, it is possible to reduce noise generated by flowing in the water supply channel and being discharged into the flush toilet.

  In addition, this toilet cleaning device increases the flow rate of the wash water drained from the drain port due to the lowering of the level of the wash water in the tank caused by draining the wash water from the drain port at a low flow rate in the initial stage. In this manner, the cleaning water is drained from the drain outlet at a small flow rate until the cleaning water level in the tank reaches the set water level. For this reason, the amount of washing water drained from the drain outlet at a small flow rate in the initial stage can always be made constant. For this reason, the amount of washing water drained from the drain outlet at a large flow rate thereafter can always be kept constant. Therefore, by draining the washing water from the drain outlet with a small flow rate of washing water in the initial stage, the residual water and residual air in the water supply channel can be pushed out reliably, and then the washing water is discharged from the drain outlet at a large flow rate. By draining the washing water, the toilet bowl can be washed well.

  Therefore, the toilet bowl cleaning apparatus of the present invention can achieve noise reduction and perform toilet bowl cleaning satisfactorily.

It is a toilet bowl washing | cleaning apparatus of Example 1, Comprising: It is sectional drawing which shows the standby state of toilet bowl washing | cleaning. It is a toilet bowl washing | cleaning apparatus of Example 1, Comprising: It is sectional drawing which shows a toilet bowl washing | cleaning start stage. It is a toilet bowl washing | cleaning apparatus of Example 1, Comprising: It is sectional drawing which shows the washing | cleaning initial stage. It is a toilet bowl washing | cleaning apparatus of Example 1, Comprising: It is sectional drawing which shows a large flow volume drainage step. It is a toilet bowl washing | cleaning apparatus of Example 1, Comprising: It is sectional drawing which shows the toilet bowl washing | cleaning completion | finish stage. It is a toilet bowl washing | cleaning apparatus of Example 1, Comprising: It is sectional drawing which shows the initial stage of a wash water storage stage. It is a toilet bowl washing | cleaning apparatus of Example 1, Comprising: It is sectional drawing which shows a mode that a support member and a float member raise in a wash water storage stage. It is a toilet bowl washing | cleaning apparatus of Example 1, Comprising: It is sectional drawing which shows a mode that washing water flows in into a weight member in a washing water storage stage. It is a toilet bowl washing | cleaning apparatus of Example 2, Comprising: It is sectional drawing which shows the standby state of toilet bowl washing | cleaning. It is a toilet bowl washing | cleaning apparatus of Example 2, Comprising: It is sectional drawing which shows a toilet bowl washing | cleaning start stage. It is a toilet bowl washing | cleaning apparatus of Example 2, Comprising: It is sectional drawing which shows the washing | cleaning initial stage. It is a toilet bowl washing | cleaning apparatus of Example 2, Comprising: It is sectional drawing which shows a large flow volume drainage step. It is a toilet bowl washing | cleaning apparatus of Example 2, Comprising: It is sectional drawing which shows a toilet bowl washing | cleaning completion | finish stage. It is a toilet bowl washing | cleaning apparatus of Example 2, Comprising: It is sectional drawing which shows a mode that a support member and a float member raise in a wash water storage stage. It is a toilet bowl washing | cleaning apparatus of Example 2, Comprising: It is sectional drawing which shows a mode that washing water flows in into a weight member in a washing water storage stage. It is sectional drawing of the toilet bowl washing | cleaning apparatus which shows another Example.

  A preferred embodiment of the present invention will be described.

  The drainage device moves up and down to open and close the drainage port, and the initial stage of draining the washing water from the drainage port does not descend, and the level of the washing water in the tank is below a set water level The weight member that starts to descend, the drain valve connected to one end, the weight member connected to the other end, the both ends of the coupler suspended from both sides, the drain valve And a support for supporting the weight member in a suspended state.

  In this case, in the initial stage of draining the wash water from the drain port, the weight member does not descend, and the toilet bowl cleaning device drains the wash water from the drain port with a small flow rate. After that, when the water level in the tank becomes equal to or lower than the set water level, the weight member starts to descend, so the drain valve is pulled up by the connector, the drain port is opened, and the toilet flushing device drains the drain water from the drain port. Increase the flow rate. In this way, this toilet flushing device has a low flow rate of washing water drained from the drain outlet when the washing water level in the tank is lowered (when the washing water level in the tank falls below the set water level). Change to flow rate. Depending on the level of the wash water in the tank, the wash water drained from the drain outlet is changed from a small flow rate to a large flow rate, so the amount of wash water drained from the drain port at each flow rate must be the same in each toilet flush. it can. For this reason, the residual water and residual air in a water supply channel can be pushed out reliably, and toilet bowl washing | cleaning can be performed favorably with the wash water with many flow rates.

  The weight member has a bottom surface portion, a side surface portion rising from the bottom surface portion, a small hole that communicates with the inside and the outside provided in the lower portion, and an upper opening that opens at the upper portion. The upper opening is opened below the highest water level of the cleaning water in the tank, the cleaning water flows in from the upper opening, and at the lowered position where it descends most from the middle of the lowering, Wash water can flow out.

  In this case, while waiting for toilet bowl cleaning, the weight member is submerged in the cleaning water stored in the tank while the cleaning water is stored. For this reason, when toilet flushing is performed and the water level in the tank becomes equal to or lower than the set water level, the force pressing the drain valve downward due to the water pressure of the washing water becomes smaller than the weight of the weight member. Accordingly, the weight member is lowered, the drain valve is pulled up, and the drain port can be opened. In addition, the weight member flows out of the small amount of cleaning water stored at the lowered position from the middle of the descent, and the weight is reduced. For this reason, the weight member can be pulled up to the raised position by the connector while maintaining the state where the drain valve closes the drain port.

  The drainage device includes a moving device for moving the support tool up and down, and the drainage valve is moved by the moving device descending the support tool while the weight member is stopped at the lowered position. The drain can be closed. In this case, when the support device is lowered by the moving device, the drain valve connected to the opposite side of the weight member of the connector is lowered while the weight member is stopped at the lowered position, and the drain port can be closed.

  The moving device may include a float member that is connected to the support and is responsive to a change in the water level of the cleaning water in the tank. In this case, when the water level of the cleaning water in the tank is lowered, the float member and the support are lowered, so that the drain valve is lowered and the drain port can be closed. Further, when the water level of the cleaning water in the tank rises with the drain valve closing the drain port, the float member and the support member rise, so that the weight member can be raised from the lowered position to the raised position.

  The moving device includes a bottom portion penetrating a lower hole, a side surface rising from the bottom portion, and a float valve that opens and closes the lower hole in response to a change in the level of the cleaning water in the tank. And having a container in which the float member is inserted and housed from an upper end opening, the washing water flows into the container, the float member rises, and the support member and the weight member rise Can do.

  In this case, in the process in which the drain valve closes the drain port and the cleaning water in the tank rises, the pilot hole penetrating the bottom surface of the container is closed by the float valve. For this reason, most of the washing water flowing into the container flows from the upper end opening of the container. When washing water flows from the top opening of the container and the float member rises, the washing water level in the tank rises to the top position of the container, so the water pressure of the washing water stored in the tank is drained. The force which presses down the drain valve which has closed the mouth is large. In this situation, when the support member rises as the float member rises, the drainage valve connected to one end of the connector does not rise, and the weight member connected to the other end of the connector rises from the lowered position. Can be raised to position.

  The drainage device may include a lower stopper that defines the lowered position of the weight member. In this case, the weight member is stopped at the lowered position by the lower stopper. In this state, when the support tool is lowered, the drain valve connected to one end of the coupler can be lowered to close the drain port.

  The drain valve has a convex part projecting outward on the outer peripheral surface, a valve body having a cylindrical shape with a sealing surface formed at the lower end, a first rising groove whose lower side is gently inclined upward, A second ascending groove extending continuously upward from one end of the ascending groove; and a descending groove extending continuously from the upper end of the second ascending groove to the other end of the first ascending groove; A cylindrical guide member disposed around the valve body so as to move in a state in which the convex portions are fitted in the order of the first rising groove, the second rising groove, and the lowering groove. Can be provided.

  In this case, when the valve body is rotated so that the convex part of the valve body moves along the first rising groove, the valve body slightly rises, so that the washing water can be drained from the drain outlet at a small flow rate. it can. When the weight member is lowered, the convex portion of the drain valve is pulled up along the second rising groove by the connector, and the drain valve further opens the drain port, so that the washing water can be drained from the drain port at a large flow rate. it can. And if the pulling-up force of a connector is lost, the convex part of a drainage valve will move along a descent | fall groove | channel, and a drainage valve will close a drain outlet. Thus, this toilet bowl washing | cleaning apparatus can perform the raising / lowering of a drain valve favorably.

  The second ascending groove extends obliquely and the descending groove may extend in the vertical direction. In this case, since the convex part of the drainage valve rises along the second ascending groove extending obliquely, the force for lifting the drainage valve can be reduced. Moreover, since the convex part of a drain valve moves along the descent | fall groove | channel extended in the perpendicular direction, a drain valve can descend | fall reliably and a drain outlet can be closed reliably.

  Next, Embodiments 1 and 2 embodying the toilet bowl cleaning device of the present invention will be described with reference to the drawings.

<Example 1>
As shown in FIG. 1, the toilet bowl cleaning apparatus according to the first embodiment supplies flush water to a flush toilet bowl through a water supply channel 1. The toilet bowl cleaning device includes a tank 10 for storing cleaning water and a drainage device 30. The tank 10 has a bottom part 11 and a side wall part 13 rising from the periphery of the bottom part 11. The tank 10 has a drain port 15 that passes through the bottom 11 and drains the stored washing water. The drain port 15 communicates with the water supply channel 1 on the downstream side. The tank 10 has an overflow pipe 17 rising from a connecting hole penetrating the bottom 11. The overflow pipe 17 has an upper end opening 17 </ b> A located above the highest water level in the tank 10. The tank 10 can store cleaning water supplied by a ball tap (not shown) having a water discharge port 19. The tank 10 is placed and fixed on the rear upper surface of the toilet body 3 of the flush toilet.

  The drainage device 30 includes a drainage valve 40, a weight member 50, a connection tool 60, a support tool 70, a moving device 80, an upper stopper 91 that defines a rising position of the weight member 50, and a lower stopper that defines a lowering position of the weight member 50. 92.

  The drain valve 40 includes a parent valve 41 and a child valve 45. The parent valve 41 is a flapper valve that is sized to block the entire drainage port 15 of the tank 10. The parent valve 41 is pivotally supported by a shaft portion 41 </ b> A provided adjacent to the drain port 15 on the upper surface of the bottom portion 11 of the tank 10. The parent valve 41 has an annular sealing surface 42 formed on the lower surface. The sealing surface 42 abuts on the upper end of the drain port 15 of the tank 10. The parent valve 41 has a through hole 43 having an opening area smaller than that of the drain port 15. The child valve 45 is a flapper valve that can open and close the through hole 43. The child valve 43 is pivotally supported by a shaft portion 45 </ b> A provided adjacent to the through hole 43 on the upper surface of the parent valve 41. The child valve 45 has an annular sealing surface 46 formed on the lower surface. The sealing surface 46 abuts on the upper surface of the peripheral edge portion of the through hole 43 of the parent valve 41. The child valve 45 is connected to a ball chain, which is a lifting tool 47 for lifting the child valve 45, on the upper surface. The upper end of the ball chain (the lifting tool 47) is connected to the tip of the lifting lever 48A of the cleaning handle 48. In the parent valve 41, one end of a ball chain, which is a connector 60, is connected to the upper surface on the opposite side of the shaft portion 41A.

  The weight member 50 has a bottom surface portion 51 and a side surface portion 53 that rises from the periphery of the bottom surface portion 51. A bottom hole 51 is provided with a small hole 51A. The weight member 50 forms an upper opening 55 in which the upper end of the side surface portion 53 is opened upward. The weight member 50 is connected to the other end of the ball chain which is the connecting tool 60.

  The support tool 70 is formed of a disk-shaped pulley. This support tool 70 has both ends of a ball chain (connector 60) suspended from both sides, and a parent valve 41 connected to one end of the ball chain (connector 60) and a ball chain (connector 60). The weight member 50 connected to the other end is supported in a suspended state.

  The moving device 80 includes a float member 81 to which the support tool 70 is connected, and a container 83 in which the float member 81 is stored. The float member 81 has a cylindrical shape with an axial center extending in the vertical direction, and a rod member 85 extends upward from the upper end surface. A pulley which is a support tool 70 is rotatably fixed to the upper end portion of the bar member 85. A container 83 that accommodates the float member 81 has a circular bottom surface portion 87 penetrating the lower hole 87 </ b> A, and a cylindrical side surface portion 89 that rises from the outer peripheral edge of the bottom surface portion 87 and is slightly larger than the outer shape of the float member 81. And a float valve 88 that opens and closes the lower hole 87A of the bottom portion 87. The container 83 is accommodated by inserting the float member 81 from the upper end opening 89A. The side surface 89 of the container 83 guides the vertical movement of the float member 81. An upper end opening 89 </ b> A of the container 83 is opened below the lower stopper 92. The float valve 88 is inserted into the disc-shaped valve body 88A formed so as to cover the lower hole 87A from below the bottom surface portion 87 of the container 83, and the lower hole 87A from the upper surface of the valve body 88A, and the upper end expands outward. And a plurality of locking portions 88B.

  The upper stopper 91 and the lower stopper 92 are formed by flat plate-like convex portions extending inward from the side wall portion 13 of the tank 10. When the weight member 50 is lifted, the upper end edge of the side surface portion 53 of the weight member 50 comes into contact with the lower surface of the upper stopper 91 to prevent the weight member 50 from rising upward. It prescribes. Further, when the weight member 50 is lowered, the lower surface of the bottom surface portion of the weight member 50 comes into contact with the upper surface of the lower stopper 92, and the weight member 50 is prevented from descending downward. Stipulate. Thus, the weight member 50 reciprocates between the upper stopper 91 and the lower stopper 92.

  Next, the toilet cleaning operation of the toilet cleaning device having such a configuration will be described.

<Toilet bowl waiting state>
In this toilet bowl cleaning device, the state of waiting for toilet bowl cleaning is as shown in FIG. 1 in which the drain valve 40 closes the drain port 15 and the wash water is stored in the tank 10. The water level in the tank 10 is the highest water level. Further, the weight member 50 is submerged in the cleaning water stored in the tank 10 at the raised position, and stores the cleaning water. The support 70 and the float member 81 are raised by the buoyancy of the float member 81. The float valve 88 is lifted by its buoyancy, and closes the lower hole 87A of the container 83 of the moving device 80.

<Toilet cleaning start and initial cleaning stage>
In order to start toilet cleaning, first, as shown in FIG. 2, the cleaning handle 48 is operated, and the ball chain (the lifting tool 47) connected to the child valve 45 is pulled up. As a result, the child valve 45 rises, and the through hole 43 formed in the parent valve 41 is opened. Then, a small amount of cleaning water (hereinafter referred to as “small flow rate” in the first embodiment) flows out from the drain port 15 into the water supply channel 1, and the level of the cleaning water in the tank 10 gradually increases as shown in FIG. To drop. Here, the small flow rate is a flow rate necessary for causing the residual water and residual air to flow well when flowing out into the water supply channel 1, and means a flow rate at which no noise is generated.

  Thus, in the initial stage of draining the wash water from the drain port 15, the weight member 50 does not descend, but a small amount of wash water is drained from the drain port 15, and the residual water and residual air in the water supply channel 1 are pushed out. For this reason, even after a large amount of flush water (hereinafter referred to as “large flow rate” in the first embodiment) is drained from the drain port 15, the flush water is discharged into the flush toilet through the water supply channel 1. Noise can be reduced. Here, the large flow rate refers to a flow rate required for discharging filth and the like in the flush toilet bowl. Moreover, since the water level of the washing water in the tank 10 is lowered, the water pressure holding the parent valve 41 downward is lowered. Further, when the level of the cleaning water in the tank 10 is lower than that of the weight member 50, the weight of the weight member 50 applied to the ball chain (connector 60) gradually increases.

<High flow drainage stage>
Furthermore, when the water level of the cleaning water in the tank 10 is lowered to the set water level, as shown in FIG. 4, the force pressing the parent valve 41 downward by the water pressure of the cleaning water is more than the weight of the weight member 50. Get smaller. Therefore, the weight member 50 is lowered to the lowered position, the parent valve 41 is raised, and the drain port 15 is opened. Then, a large flow of washing water flows out from the drain port 15 into the water supply channel 1.

  As described above, this toilet flushing apparatus drains a small amount of flush water from the drain port 15 until the flush water level in the tank 10 reaches the set water level (initial stage), and the flush water level in the tank 10 When the water level falls below the set water level, a large flow of washing water is drained from the drain port 15. That is, in this toilet bowl cleaning device, the level of the cleaning water in the tank 10 is lowered, and the cleaning water drained from the drain port 15 changes from a small flow rate to a large flow rate. For this reason, the amount of washing water drained from the drain outlet at a small flow rate in the initial stage can always be made constant. For this reason, the amount of washing water drained from the drain outlet at a large flow rate after that can always be kept constant. Therefore, by draining the washing water from the drain outlet with a small flow of washing water in the initial stage, the residual water and residual air in the water supply channel can be pushed out reliably, and then the washing water is discharged from the drain outlet at a large flow rate. By draining the washing water, the toilet bowl can be washed well.

  Therefore, the toilet bowl cleaning apparatus according to the first embodiment can reduce noise and perform toilet bowl cleaning satisfactorily.

<Toilet bowl end stage>
When a large amount of washing water is drained from the drain port 15, the level of the washing water in the tank 10 further decreases. Then, as shown in FIG. 5, the float valve that has closed the lower hole of the container 83 of the moving device 80 moves downward, the lower hole is opened, and the washing water in the container 83 flows out. Thereby, the float member 81 and the support tool 70 are lowered. Further, the weight member 50 connected to the other end of the ball chain (connector 60) is stopped at the lowered position by the lower stopper 92, and does not move downward. For this reason, the master valve 41 connected to one end of the ball chain (connector 60) is lowered and the drain port 15 is closed. As a result, the wash water is not supplied to the flush toilet through the water supply channel 1, and toilet flushing is completed. During this time, the weight member 50 flows out from the small hole 51A at the lowered position from the middle of the descent, and the weight is reduced.

<Washing water storage stage>
When cleaning water is supplied into the tank 10 from the water outlet 19 of the ball tap with the drain valve 40 closed, the water level of the cleaning water in the tank 10 rises. As shown in FIGS. 6 and 7, since the lower hole 87 </ b> A of the container 83 of the moving device 80 is closed by the float valve 88, most of the washing water flowing into the container 83 flows from the upper end opening 89 </ b> A of the container 83. . When the washing water flows into the container 83 and the float member 81 rises, the level of the washing water in the tank 10 rises to the upper end opening 89A of the container 83. For this reason, the force which presses down the drain valve 40 which the water pressure of the wash water stored in the tank 10 has closed the drain port 15 becomes large. In this situation, when the support member 70 rises as the float member 81 rises, the drain valve 40 connected to one end of the ball chain (connector 60) does not rise, and the other of the ball chain (connector 60). The weight member 50 connected to the end of the head is raised from the lowered position to the raised position.

  Further, when cleaning water is supplied into the tank 10 from the spout 19 of the ball tap, the level of the cleaning water in the tank 10 rises, and cleaning is performed from the upper end of the side surface portion 53 of the weight member 50 as shown in FIG. Water flows into the weight member 50. And if the water level of the wash water in the tank 10 reaches the maximum water level, the supply of the wash water from the spout 19 of the ball tap is stopped, and the toilet bowl cleaning device returns to the toilet bowl cleaning standby state shown in FIG.

<Example 2>
As shown in FIG. 9, the toilet bowl cleaning device of the second embodiment is different from the first embodiment in the form of the drain valve 140 of the drain device 30. The other points are the same as in the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In this toilet bowl cleaning apparatus, the drain valve 140 includes a valve body 141 having a cylindrical outer diameter and a cylindrical guide member 143 disposed around the valve body 141. The valve body 141 has a pair of columnar convex portions 141A that protrude outward on the opposite surface of the outer peripheral surface. The valve body 141 has a sealing surface 142 formed at the lower end. The seal surface 142 abuts the upper end of the drain port 15 of the tank 10. The valve body 141 has a columnar operation shaft 145 extending upward from the center of the upper surface. The valve body 141 and the operation shaft 145 are formed concentrically. The valve body 141 is connected to one end of a ball chain which is a connector 60.

  The guide member 143 has a first ascending groove 151, a second ascending groove 152, and a descending groove 153 that are formed on the axial object at positions facing the inner peripheral surface. In the first rising groove 151, the lower side 151A is gently inclined upward from the other end toward the one end. The second rising groove 152 is continuous with one end portion of the first rising groove 151 and extends obliquely upward in the upward direction above the other end portion of the first rising groove 151. The descending groove 153 is continuous with the upper end portion of the second raising groove 152, extends vertically downward, and is continuous with the other end portion of the first raising groove 151. A step portion 154 that is recessed downward is formed at the boundary between the first rising groove 151 and the second rising groove 152.

  Further, a shaft portion 163 is provided at a portion where the lower side 152A of the second rising groove 152 intersects with the inner side 153A of the lowering groove 153, and a first piece 161 and a second side 162 extending on both sides around the shaft portion 163, It has the stopper 160 which has. The stopper 160 is bent at the shaft portion 163, and the first piece 161 is formed to be heavier than the second side 162. In the stopper 160, the first piece 161 is always arranged along the lower side 152 </ b> A of the second rising groove 152, and the second piece 162 is on the virtual extension line extending upward from the inner side 153 </ b> A of the lowering groove 153. Is arranged. The stopper 160 prevents the convex portion 141 </ b> A of the valve body 141 from moving from above to below along the second rising groove 152. Therefore, the convex portion 141 </ b> A of the valve body 141 can move in a state in which the first rising groove 151, the second rising groove 152, and the lowering groove 153 are fitted in the grooves 151, 152, and 153 in this order.

  Next, the toilet cleaning operation of the toilet cleaning device having such a configuration will be described.

<Toilet bowl waiting state>
In this toilet bowl cleaning device, in a state of waiting for toilet bowl cleaning, as shown in FIG. 9, the valve body 141 closes the drain port 15 and the wash water is stored in the tank 10. The water level in the tank 10 is the highest water level. Further, the weight member 50 is submerged in the cleaning water stored in the tank 10 at the raised position, and stores the cleaning water. The support 70 and the float member 81 are raised by the buoyancy of the float member 81. The float valve 88 is lifted by its buoyancy, and closes the lower hole 87A of the container 83 of the moving device 80. The convex portion 141 </ b> A of the valve body 141 of the drain valve 140 is located at the lowest portion on the other end side of the first rising groove 151.

<Toilet cleaning start and initial cleaning stage>
In order to start toilet flushing, first, as shown in FIG. 10, the operating shaft 145 is rotated clockwise as viewed from above, and the convex portion 141 </ b> A of the valve body 141 is one end from the other end of the first rising groove 151. It moves to the part side along the 1st raising groove 151, and is located in the step part 154. FIG. As a result, the valve body 141 slightly rises and opens the drain port 15. Then, a small amount of cleaning water (hereinafter referred to as “small flow rate” in the second embodiment) flows out from the drain port 15 into the water supply channel 1, and the level of the cleaning water in the tank 10 gradually increases as shown in FIG. To drop. Here, the small flow rate is a flow rate necessary for causing the residual water and residual air to flow well when flowing out into the water supply channel 1, and means a flow rate at which no noise is generated.

  Thus, in the initial stage of draining the wash water from the drain port 15, the weight member 50 does not descend, but a small amount of wash water is drained from the drain port 15, and the residual water and residual air in the water supply channel 1 are pushed out. For this reason, even if flush water having a large flow rate (hereinafter referred to as “large flow rate” in the second embodiment) is drained from the drain port 15, the water is discharged into the flush toilet through the water supply channel 1. Noise can be reduced. Here, the large flow rate refers to a flow rate required for discharging filth and the like in the flush toilet bowl. Moreover, since the water level of the washing water in the tank 10 decreases, the water pressure holding the valve element 141 downward decreases. Further, when the level of the cleaning water in the tank 10 is lower than that of the weight member 50, the weight of the weight member 50 applied to the ball chain (connector 60) gradually increases.

<High flow drainage stage>
Furthermore, when the water level of the cleaning water in the tank 10 is lowered to the set water level, the force pressing the valve body 141 downward by the water pressure of the cleaning water is lower than the weight of the weight member 50 as shown in FIG. Get smaller. Therefore, the weight member 50 is lowered to the lowered position, the valve body 141 is further raised, and the drain port 15 is largely opened. Then, a large flow of washing water flows out from the drain port 15 into the water supply channel 1.

  As described above, this toilet flushing apparatus drains a small amount of flush water from the drain port 15 until the flush water level in the tank 10 reaches the set water level (initial stage), and the flush water level in the tank 10 When the water level falls below the set water level, a large flow of washing water is drained from the drain port 15. That is, in this toilet bowl cleaning device, the level of the cleaning water in the tank 10 is lowered, and the cleaning water drained from the drain port 15 changes from a small flow rate to a large flow rate. For this reason, the amount of washing water drained from the drain outlet at a small flow rate in the initial stage can always be made constant. For this reason, the amount of washing water drained from the drain outlet at a large flow rate after that can always be kept constant. Therefore, by draining the washing water from the drain outlet with a small flow of washing water in the initial stage, the residual water and residual air in the water supply channel can be pushed out reliably, and then the washing water is discharged from the drain outlet at a large flow rate. By draining the washing water, the toilet bowl can be washed well.

  Therefore, the toilet bowl cleaning apparatus according to the second embodiment can also reduce noise and perform toilet bowl cleaning satisfactorily.

  The convex portion 141A of the valve body 141 moves along the second rising groove 152 from the step 154 at one end of the first rising groove 151, and is a boundary portion between the second rising groove 152 and the lowering groove 153. Located at the top end. Since the 2nd raising groove 152 inclines diagonally, the force which pulls up the valve body 141 can be made small. Further, during this movement, the convex portion 141A comes into contact with the second side of the stopper. Then, the stopper rotates around the shaft portion, and the shaft portion passes through the stopper. Thereafter, since the stopper returns to the original position, the convex portion 141A is prevented from moving downward from above along the second rising groove 152.

<Toilet bowl end stage>
When a large amount of washing water is drained from the drain port 15, the level of the washing water in the tank 10 further decreases. Then, as shown in FIG. 13, the float valve that closed the lower hole of the container 83 of the moving device 80 moves downward, the lower hole is opened, and the washing water in the container 83 flows out. Thereby, the float member 81 and the support tool 70 are lowered. Further, the weight member 50 connected to the other end of the ball chain (connector 60) is stopped at the lowered position by the lower stopper 92, and does not move downward. For this reason, the valve body 141 connected to one end of the ball chain (connector 60) is lowered and the drain port 15 is closed. That is, the convex portion 141 </ b> A of the valve body 141 descends along the descending groove 153 and is located at the lower portion of the descending groove 153 (the lowest portion on the other end side of the first ascending groove 151). As a result, the wash water is not supplied to the flush toilet through the water supply channel 1, and toilet flushing is completed. During this time, the weight member 50 flows out from the small hole 51A at the lowered position from the middle of the descent, and the weight is reduced.

<Washing water storage stage>
When cleaning water is supplied into the tank 10 from the water outlet 19 of the ball tap with the valve body 141 closing the drain port 15, the level of the cleaning water in the tank 10 rises. As shown in FIG. 14, since the lower hole 87 </ b> A of the container 83 of the moving device 80 is closed by the float valve 88, most of the cleaning water flowing into the container 83 flows from the upper end opening 89 </ b> A of the container 83. When the washing water flows into the container 83 and the float member 81 rises, the level of the washing water in the tank 10 rises to the upper end opening 89A of the container 83. For this reason, the force which presses down the valve body 141 which the water pressure of the wash water stored in the tank 10 has closed the drain port 15 becomes large. In this situation, when the support member 70 rises as the float member 81 rises, the valve body 141 connected to one end of the ball chain (connector 60) does not rise, and the other of the ball chain (connector 60). The weight member 50 connected to the end of the head is raised from the lowered position to the raised position.

  Further, when the cleaning water is supplied into the tank 10 from the spout 19 of the ball tap, the level of the cleaning water in the tank 10 rises and the cleaning is performed from the upper end of the side surface portion 53 of the weight member 50 as shown in FIG. Water flows into the weight member 50. Then, when the level of the cleaning water in the tank 10 reaches the highest level, the supply of the cleaning water from the water tap 19 of the ball tap is stopped, and the toilet bowl cleaning device returns to the toilet cleaning standby state shown in FIG.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Examples 1 and 2, a small hole is provided in the bottom surface portion of the weight member, and the upper end of the side surface portion forms an upper opening. You may make it the container which has the upper surface part to cover, and provide an upper opening in the upper part.
(2) In Examples 1 and 2, the weight member is formed in a container shape having a bottom surface portion and a side surface portion, but may be an absorber or the like that can absorb and drain cleaning water.
(3) In Examples 1 and 2, the support tool moved up and down, but it need not move up and down.
(4) In Examples 1 and 2, the support is moved up and down by the float member, but may be moved up and down by other means.
(5) In Examples 1 and 2, the upper stopper is provided, but it may not be provided.
(6) In Examples 1 and 2, the lower stopper is provided, but it may not be provided.
(7) Although the child valve is lifted by operating the washing handle in the first embodiment, it may be automatically lifted using a motor or the like.
(8) As shown in FIG. 16, the first ascending groove, the second ascending groove, and the descending groove of the guide member according to the second embodiment extend the second ascending groove 252 in the vertical direction and incline the descending groove 253 obliquely. May be extended. In FIG. 16, the same components as those of the second embodiment are denoted by the same reference numerals.
(9) As shown in FIG. 16, the bottom surface of the drain valve of the drain valve of Example 2 may be inclined. In this case, a seal surface 242 is formed on the lower surface of the valve body 241 and is brought into contact with the upper end of the inclined drain port 215.

DESCRIPTION OF SYMBOLS 1 ... Water supply path 10 ... Tank 15 ... Drain outlet 30, 130 ... Drainage device 40, 140 ... Drain valve 50 ... Weight member 51 ... Bottom part 51A ... Small hole 53 ... Side part 55 ... Top opening 60 ... Connecting tool (ball chain) )
70 ... Support (pulley)
DESCRIPTION OF SYMBOLS 80 ... Moving apparatus 81 ... Float member 83 ... Container 87 ... Bottom part 87A ... Lower hole 88 ... Float valve 89 ... Side part 92 ... Lower stopper 141 ... Valve body 141A ... Convex part 142 ... Sealing surface 143 ... Guide member 151 ... First 1 ascending groove 152 ... second ascending groove 153 ... descending groove

Claims (9)

A toilet flushing device for supplying flush water to a flush toilet via a water supply channel,
A tank having a drain outlet for storing the wash water and flowing out to the water supply channel communicating the stored wash water to the downstream side;
In the initial stage of draining the washing water from the drain port, the washing water is drained at a low flow rate, and the flow rate of the washing water drained from the drain port is increased by the lowering of the level of the washing water in the tank. A toilet bowl cleaning device comprising a drainage device. The drainage device
A drain valve that moves up and down to open and close the drain port;
An initial stage of draining the cleaning water from the drain port does not descend, and a weight member that starts to descend when the water level of the cleaning water in the tank falls below a set water level,
A connector that connects the drain valve to one end and the weight member to the other end;
2. The toilet bowl cleaning device according to claim 1, further comprising a support tool that suspends both ends of the connector from both sides and supports the drain valve and the weight member in a suspended state. The weight member is
It has a bottom surface, a side surface that rises from the bottom surface, a small hole that communicates the inside and the outside provided at the bottom, and an upper opening that opens at the top.
At the most elevated position, the upper opening opens below the highest water level of the cleaning water in the tank, and the cleaning water flows in,
The toilet flushing apparatus according to claim 2, wherein the washing water flows out from the small hole at a lowered position where the lowest is lowered from the middle of the descent. The drainage device includes a moving device that moves the support up and down,
The toilet flushing device according to claim 2 or 3, wherein the drain valve closes the drain port when the moving device lowers the support while the weight member is stopped at the lowered position. .   The toilet cleaning device according to claim 4, wherein the moving device includes a float member that is connected to the support and moves in response to a change in a level of the cleaning water in the tank. The moving device includes a bottom portion penetrating a lower hole, a side surface rising from the bottom portion, and a float valve that opens and closes the lower hole in response to a change in the level of the cleaning water in the tank. And having a container for storing the float member inserted from the upper end opening,
The toilet flushing device according to claim 5, wherein the washing water flows into the container, the float member rises, and the support and the weight member rise.   The toilet flushing device according to any one of claims 4 to 6, wherein the drainage device includes a lower stopper that defines the lowered position of the weight member. The drain valve is
A valve body having a cylindrical outer shape having a convex portion protruding outward on the outer peripheral surface and having a seal surface formed at the lower end;
The first rising groove whose lower side is gently inclined upward, the second rising groove continuously extending from one end of the first rising groove, and the upper end of the second rising groove It has a descending groove extending to the other end of the first rising groove on the inner peripheral surface, and moves in a state in which the convex portions are fitted in the order of the first rising groove, the second rising groove, and the descending groove. The toilet bowl cleaning device according to claim 2, further comprising a cylindrical guide member disposed around the valve body.   The toilet cleaning device according to claim 8, wherein the second rising groove extends obliquely and the falling groove extends in a vertical direction.

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