JP6649082B2 - Toilet flush tank and toilet flushing device including the same - Google Patents

Description

  The present invention relates to a toilet flushing tank and a toilet flushing device including the same.

  2. Description of the Related Art Conventionally, a toilet flushing device including a toilet flushing tank and an overflow pipe attached to the bottom of the toilet flushing tank is known (for example, see Patent Document 1). The overflow pipe described in Patent Literature 1 includes an overflow pipe main body extending in a vertical direction, a drain port provided at a lower portion of the overflow pipe main body to discharge washing water, and a valve seat provided at a peripheral edge of the drain port. . The overflow pipe described in Patent Literature 1 includes an overflow pipe main body, a drain port, and a valve seat formed of two separate members, and is attached to the bottom of the toilet flush tank at the drain port. Water that has flowed in from the upper opening of the overflow pipe body flows into the drain at the lower part.

Japanese Patent No. 5807257

In the overflow pipe described in Patent Document 1, the overflow pipe main body, the drain port, and the valve seat are composed of two separate members, and the number of parts is likely to increase and the configuration is likely to be complicated.
Here, the overflow pipe described in Patent Document 1 is attached to the bottom of the toilet flush tank. Therefore, it is desired to simplify the overflow structure in which the overflow pipe is attached to the toilet flush tank.

  An object of the present invention is to provide a toilet flushing tank that can simplify the overflow structure.

  The present invention relates to a toilet flushing tank (for example, a flushing tank 4 to be described later) for storing flushing water, which includes a bottom (for example, a bottom 411 to be described later) and an outer wall (for example, a peripheral wall 412 to be described later) rising from the periphery of the bottom. ), A drain port provided at the bottom (for example, a drain port 11 described later), a valve seat provided at a periphery of the drain port (for example, a valve seat 12 described later), and a drain port provided at the bottom portion. A flow path communicating with the mouth (for example, a flow path 13 described later) and an overflow pipe (for example, an overflow pipe 46 described later) have an opening connected thereto, and a connection portion for an overflow pipe (for example, an overflow pipe connecting section) communicating with the flow path. The drain port, the valve seat, the flow path, and the overflow pipe connection section are related to a toilet flush tank integrally formed.

  Further, it is preferable that the flow path communicates the drain port with the outside of the toilet flush tank.

  Further, it is preferable that the flow path is formed so as to extend from the drain port toward the rear of the toilet flush tank.

  Further, the present invention is a toilet cleaning device (for example, a toilet cleaning device 1 described later) including the toilet cleaning tank and the overflow pipe connected to the overflow pipe connection portion, wherein the overflow pipe is The present invention relates to a toilet flushing device having a closing portion (for example, a closing portion 464 described below) that is disposed in the flow path and stops the flow of water to the outside of the toilet flushing tank.

  The present invention also provides a drain valve configured to be movable between the toilet flush tank and a position in contact with the valve seat and a position separated from the valve seat, and that opens and closes the drain port (for example, a drain valve described below). The overflow having a drain valve 48), an overflow pipe main body (for example, an overflow pipe main body described later), and a drain valve support section (for example, a drain valve support section 465 described later) that movably supports the drain valve. A flush toilet device comprising: a flush pipe, wherein the overflow pipe main body and the drain valve support portion are integrally formed.

  ADVANTAGE OF THE INVENTION According to this invention, the toilet flush tank which can simplify an overflow structure can be provided.

It is a perspective view showing toilet bowl washing device 1 concerning one embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating a cleaning tank 4 and an internal configuration of the cleaning tank 4 according to an embodiment of the present invention. FIG. 3 is a cross-sectional perspective view illustrating a configuration around an overflow pipe 46 and a drain port 11. It is sectional drawing which shows the structure of the periphery of the overflow pipe 46 and the drain port 11. FIG. FIG. 4 is a perspective view of the cleaning tank 4 as viewed obliquely from above. FIG. 4 is a perspective view of the washing tank 4 as viewed from obliquely below. FIG. 4 is a perspective view showing a configuration of an overflow pipe 46 and a drain valve 48. FIG. 4 is an enlarged perspective view showing a configuration of an overflow pipe 46 and a drain valve 48.

  Hereinafter, an embodiment of a toilet flushing device 1 of the present invention will be described with reference to the drawings. In the following description, the front-back direction when viewed from a person sitting on a toilet seat (not shown) of the toilet flushing device 1 is referred to as a front-back direction. The left and right directions when viewed from a person sitting on a toilet seat (not shown) of the toilet bowl cleaning device 1 are referred to as left and right directions. The vertical direction along the vertical direction is defined as the vertical direction.

  As shown in FIGS. 1 and 2, the toilet cleaning device 1 of the present embodiment includes a toilet 2, a base plate 3, a cleaning tank 4 as a toilet cleaning tank, a water supply unit 5, a cleaning drive unit 7, A cover 8a and a pair of side covers 8b, 8b are provided.

  The toilet 2 includes a toilet main body 2a, a toilet seat (not shown), and a toilet lid 2b. The toilet seat (not shown) and the toilet lid 2b are rotatably attached to the upper part of the toilet body 2a with respect to the toilet body 2a.

  The base plate 3 is attached to a rear upper surface of the toilet body 2a as shown in FIG. A cleaning tank 4 is arranged above the base plate 3. The water received by the base plate 3 is led out into the toilet body 2a through a lead-out opening (not shown) formed in the base plate 3.

  The washing tank 4 is arranged above the base plate 3 and behind and above the toilet bowl 2 and stores washing water for washing the toilet body 2a. The washing tank 4 is provided inside the toilet bowl washing device 1. The cleaning tank 4 includes a tank body 41 and a tank lid 42 as shown in FIG.

  The tank body 41 stores cleaning water. As shown in FIG. 2, the tank main body 41 is formed with an open upper surface, and includes a bottom 411 and a peripheral wall 412 (outer wall) formed so as to rise from the periphery of the bottom 411 and surround the periphery. 2 to 6, the tank body 41 has a drain port 11, a valve seat 12, a flow path 13, and a connection port 14 as a connection part for an overflow pipe. The drain port 11, the valve seat 12, the flow path 13, and the connection port 14 are integrally formed at the bottom 411 of the tank body 41. An overflow pipe 46 is connected to the connection port 14 of the tank body 41.

  The drain port 11 is provided on the bottom 411 of the tank body 41 of the cleaning tank 4 as shown in FIGS. The drain port 11 discharges flush water to the toilet 2. The drain port 11 is formed in a cylindrical shape protruding downward from a lower portion of the bottom 411, and penetrates the bottom 411 of the tank body 41.

  The valve seat 12 is provided on the periphery of the drain port 11 as shown in FIG. The valve seat 12 is formed in a cylindrical shape, and is formed so as to extend upward from the bottom 411 of the tank body 41 at the periphery of the drain port 11. The upper end of the valve seat 12 is inclined such that the rear side of the washing tank 4 is higher.

  As shown in FIGS. 2 to 4, a drain valve 48 is arranged on the valve seat 12. The drain valve 48 opens and closes the drain port 11. The drain valve 48 is configured to be movable between a position in contact with the valve seat 12 and a position apart from the valve seat 12. At the upper end of the valve seat 12, the rear side of the cleaning tank 4 is formed to be inclined so as to be higher. Therefore, the drain valve 48 is higher at the rear side of the cleaning tank 4 when the drain port 11 is closed. It is arranged on the valve seat 12 in such an inclined state.

As shown in FIGS. 7 and 8, the drain valve 48 has a valve body 481, a valve body holding part 482, and a pair of support arms 483 and 483.
The valve body 481 is formed in an annular plate shape. The valve body portion 481 contacts the valve seat 12 to close the drain port 11. The valve body portion 481 is held by the valve body holding portion 482. The lower end of the ball chain 401 is connected to the upper surface of the valve body holding portion 482.

  The pair of support arms 483 and 483 are formed to extend from one end of the valve body holding portion 482 to the overflow pipe 46 side. A support recess 483a is formed at the tip end of the pair of support arms 483 and 483. The support concave portion 483a is formed in a concave shape whose lower side is opened, and is rotatably supported by a drain valve support portion 465 of the overflow pipe 46 described later.

  As shown in FIG. 2, the drain valve 48 is connected to the cleaning drive unit 7 through a chain 401, and opens and closes the drain port 11 by operating an operation button (not shown). By raising the drain valve 48 to open the drain port 11, the washing water stored in the tank body 41 flows out from the drain port 11 and is supplied to the toilet main body 2a, so that the toilet main body 2a is washed. The drain valve 48 is connected to the cleaning drive unit 7 via a chain 401. For example, the rotation shaft 7b of the motor 7a of the cleaning drive unit 7 is rotated by operating an operation button (not shown). , The cleaning drive unit 7 is driven, and the drain valve 48 is opened and closed.

  The flow channel 13 is provided on the bottom 411 of the tank main body 41 as shown in FIGS. Water flowing from an opening 46 a (described later) at the upper part of the overflow pipe 46 is introduced into the flow channel 13. The flow path 13 circulates water flowing from the overflow pipe 46 toward the drain port 11. The flow path 13 is formed so as to penetrate the side surface on the inner rear side of the valve seat 12 sideways. The flow path 13 communicates with the drain port 11.

  The flow path 13 is configured by a flow path component 131 as shown in FIG. The flow path component 131 extends from the rear of the cleaning tank 4 in the valve seat 12 to the rear of the cleaning tank 4. The flow path component 131 has a lower component 131a and an upper component 131b. The lower component part 131a is constituted by the bottom part 411 of the cleaning tank 4, and is formed in a plate shape extending in the horizontal direction. The upper component 131b is disposed above and separated from the lower component 131a, and is formed in a plate shape extending in the horizontal direction. The flow path 13 is formed between the lower component 131a and the upper component 131b.

  The flow path component 131 is formed integrally with a connection port 14 described later. The connection port 14 is formed above the upper component 131b. The connection port 14 is formed in a cylindrical shape extending in the vertical direction, has an opening at an upper portion to which the overflow pipe 46 is connected, and communicates with the flow path 13.

  The flow path 13 extends toward the outside of the cleaning tank 4. The flow path 13 extends horizontally from the rear side surface inside the valve seat 12 formed on the peripheral edge of the drain port 11 toward the rear side of the washing tank 4, and extends between the drain port 11 and the tank body 41. Communicate with the outside world.

  In the present embodiment, when the cleaning tank 4 is molded by using a mold (not shown) arranged vertically, at the bottom of the cleaning tank 4 without penetrating in the horizontal direction and halfway for molding reasons. It is difficult to mold the extending flow path. Therefore, in order to easily form the flow path 13, the flow path 13 is molded using a mold so as to penetrate the drain port 11 and the outside of the tank body 41 to communicate with each other. Thereby, since the drain port 11 and the outside of the tank main body 41 are formed so as to penetrate, the flow path 13 can be easily formed even when the tank main body 41 is molded using a vertically arranged mold.

  Here, in the present embodiment, the flow path 13 is formed so as to extend rearward from the valve seat 12 on the periphery of the drain port 11. In the present embodiment, the distance from the peripheral valve seat 12 of the drain port 11 to the outside of the cleaning tank 4 on the rear side is from the peripheral valve seat 12 of the drain port 11 to the outside of the cleaning tank 4 on the left and right sides. Shorter than the distance. That is, in the present embodiment, the length of the flow path 13 is formed shorter than the length of the flow path 13 extending in the left-right direction of the cleaning tank 4 from the drain port 11. Thus, since the flow path 13 is short, the flow path 13 can be easily formed even when the tank main body 41 is molded using a mold arranged vertically.

  The connection port 14 is formed in a cylindrical shape that extends in the up-down direction and has a circular opening at the top. As shown in FIGS. 3 and 4, an overflow pipe connecting portion 462 of an overflow pipe 46 described later is connected to the opening of the connection port 14. The lower portion of the connection port 14 communicates with the flow channel 13 by being connected to the upper configuration portion 131b of the flow channel configuration portion 131 halfway in the front-rear direction in which the flow channel 13 extends. Thus, the connection port 14 communicates the flow path 13 with the inside of the tank body 41.

  The overflow pipe 46 is provided inside the tank main body 41 as shown in FIG. The overflow pipe 46 is configured to be detachable from the tank main body 41. In the present embodiment, a structure in which the overflow pipe 46 is attached to the cleaning tank 4 is referred to as an overflow structure. The overflow structure includes the drain port 11, the valve seat 12, the flow path 13 and the connection port 14 provided on the bottom 411 of the tank body 41, and an overflow pipe connection portion 462 (described later) of the overflow pipe 46.

  The overflow pipe 46 is formed integrally with a resin material. The overflow pipe 46 has an opening 46a at the top. The opening 46 a opens at the upper end of the overflow pipe 46 at a height that matches the upper limit of the level of the cleaning water stored in the cleaning tank 4.

  The overflow pipe 46 has an overflow pipe main body 461, an overflow pipe connection part 462, and a pair of drain valve support parts 465 and 465, as shown in FIGS. The overflow pipe main body 461, the overflow pipe connection part 462, and the pair of drain valve support parts 465, 465 are formed integrally.

  The overflow pipe connection portion 462 is provided below the overflow pipe 46. The overflow pipe connection part 462 is connected to the connection port 14 of the tank body 41 as shown in FIG. The overflow pipe connecting portion 462 has a connecting portion main body 463 and a closing portion 464 as shown in FIGS.

  The connecting portion main body 463 is formed to extend downward from the lower end of the overflow pipe main body 461 as shown in FIG. The connecting portion main body 463 includes a connecting portion cylindrical body 463a, an annular locking convex portion 463b, a positioning vertical convex portion 463c, a plurality of vertical convex portions 463d, an O-ring groove 463e, and a first engaging portion 463f. , And a second engagement portion 463g.

The connection tube 463a is formed in a cylindrical shape extending downward from the lower end of the overflow pipe main body 461.
As shown in FIG. 8, the annular locking projection 463b protrudes in an annular shape from the outer surface of the connection part cylinder 463a at the upper end of the connection part cylinder 463a. When the overflow pipe 46 is connected to the bottom 411 of the cleaning tank 4, the annular locking projection 463b comes into contact with the upper end surface of the connection port 14 of the cleaning tank 4 (see FIG. 4).

  As shown in FIG. 8, the positioning vertical convex portion 463c protrudes from the outer peripheral surface of the connecting portion tubular body 463a and extends vertically below the annular locking convex portion 463b. The positioning vertical protrusion 463c is formed on the side where the drain valve 48 is arranged. When the overflow pipe 46 is connected to the bottom 411 of the cleaning tank 4, the positioning vertical projection 463 c is locked in the groove 141 of the connection port 14 of the cleaning tank 4, and the overflow pipe 46 cannot rotate with respect to the tank body 41. (See FIG. 4).

  As shown in FIG. 8, the plurality of vertical protrusions 463d protrude from the outer peripheral surface of the connecting portion tubular body 463a and extend vertically below the annular locking protrusion 463b. The plurality of vertical protrusions 463d are arranged apart from each other in the circumferential direction. When the overflow pipe 46 is connected to the bottom 411 of the cleaning tank 4, the plurality of vertical projections 463 d are deformed by being pressed against the inner surface of the connection port 14 of the cleaning tank 4.

  As shown in FIG. 8, the O-ring groove 463e is formed below the plurality of vertical protrusions 463d and along the outer peripheral surface of the connecting portion cylinder 463a. The O-ring 466 is disposed in the O-ring groove 463e. The O-ring 466 arranged in the O-ring groove 463e is pressed against the inner surface of the connection port 14 when the overflow pipe 46 is connected to the bottom 411 of the cleaning tank 4 (see FIG. 4).

  As shown in FIG. 8, the first engagement portion 463f protrudes downward at the lower end of the connection portion cylindrical body 463a, and protrudes laterally on the flow channel 13 side. When the overflow pipe 46 is connected to the bottom 411 of the cleaning tank 4, the first engagement portion 463 f is provided on the drain port 11 side of the connection port 14 on the upper component 131 b of the channel component 131 constituting the channel 13. (See FIG. 4).

  As shown in FIG. 8, the second engagement portion 463 g protrudes downward at the lower end of the connection portion tubular body 463 a, and protrudes to the side of the flow path 13 on the outside of the cleaning tank 4. When the overflow pipe 46 is connected to the bottom portion 411 of the cleaning tank 4, the second engagement portion 463 g is provided on the connection port 14 on the outside of the cleaning tank 4 at the upper side of the flow path component portion 131 constituting the flow path 13. It engages with the edge of the portion 131b (see FIG. 4).

  The closing portion 464 is formed continuously below the connecting portion main body 463 as shown in FIG. The closing part 464 is disposed in the flow path 13 when the overflow pipe 46 is connected to the bottom part 411 of the washing tank 4, and stops the flow of water to the outside of the washing tank 4. The closing portion 464 has a semi-cylindrical body 464a, a semi-circular plate 464b, and a water blocking protrusion 464c.

The semi-cylindrical body 464a is formed in a substantially semi-cylindrical shape having a substantially semi-circular cross section in the horizontal direction, and extends in the vertical direction. The semi-cylindrical body 464a forms an arc-shaped side surface of the closing portion 464, and is formed to extend downward from the lower end of the connection portion main body 463.
The semi-circular plate 464b forms the bottom of the closing portion 464 and is formed in a substantially semi-circular plate shape. The semi-circular plate 464b is connected to the lower end of the semi-cylindrical body 464a so as to cover the lower part of the semi-cylindrical body 464a in a state of being horizontally arranged.

  As shown in FIG. 8, the water stopping protrusion 464c is formed on the outer surface of the semi-cylindrical body 464a and the semi-circular plate 464b. The water stop projection 464c has a pair of vertical projections 464d and 464d and a horizontal projection 464e. The pair of vertically projecting portions 464d, 464d extend linearly in the vertical direction on the outer surface of the semi-cylindrical body 464a, and are formed symmetrically around the cleaning tank 4 with the semi-cylindrical body 464a interposed therebetween. The horizontal protruding portion 464e is formed by connecting lower end portions of a pair of vertical protruding portions 464d and 464d on the outer surface (lower surface) of the semi-circular plate 464b, and extends linearly in the front-rear direction of the washing tank 4.

  The closing portion 464 is disposed in the flow path 13 when the overflow pipe 46 is connected to the bottom 411 of the tank body 41, as shown in FIGS. The closing portion 464 is arranged such that the arc-shaped side surface of the semi-cylindrical body 464a is convex toward the outside of the tank body 41. The closing portion 464 is formed of a resin material, and when the overflow pipe 46 is connected to the bottom portion 411 of the tank main body 41, the closing portion 464 is press-fitted into the channel 13 via the connection port 14, inserted and crushed.

  When the closing portion 464 is crushed, the pair of vertical protruding portions 464d, 464d and the horizontal protruding portion 464e of the closing portion 464 abut on the inner surface of the flow path component 131 constituting the flow path 13. Thereby, the closing part 464 closes the flow path 13 on the outside of the cleaning tank 4. Therefore, the flow of the water that has flowed into the flow path 13 from the overflow pipe 46 to the drain port 11 side is allowed, and the flow of the water to the outside of the tank body 41 is closed by the closing portion 464.

  The base plate 3 is disposed below the washing tank 4, as shown in FIGS. Therefore, even if the water flowing through the flow path 13 leaks from the gap between the flow path 13 and the closing portion 464, the water is received by the base plate 3. The water received by the base plate 3 is led out into the toilet body 2a through a lead-out opening (not shown) formed in the base plate 3.

  As shown in FIG. 8, the pair of drain valve support portions 465 and 465 rotatably (movably) support the drain valve 48. The pair of drain valve support portions 465 and 465 respectively protrude laterally from the outer peripheral surface of the overflow pipe 46 at the lower portion of the overflow pipe main body 461 and extend upward from the distal end of the protruding portion. The pair of drain valve support portions 465 and 465 support the support concave portions 483 a of the pair of support arm portions 483 and 483 of the drain valve 48.

  The water supply unit 5 is provided in the cleaning tank 4 as shown in FIG. The water supply unit 5 includes a water supply flow path unit 51 and a ball tap device 60. A water supply pipe 501 connected to an external water supply source (not shown) is connected to the water supply unit 5.

As shown in FIG. 2, the water supply channel 51 has a main channel 511 and a branch channel 512.
The main flow path 511 passes through the inside of the cleaning tank 4. The main flow path section 511 supplies the cleaning water supplied from the water supply section 5 to the cleaning tank 4. At a downstream end of the main flow path 511, a cleaning water discharging section 511a for discharging water into the cleaning tank 4 is provided. The branch channel 512 discharges the wash water supplied from the water supply unit 5 to the base plate 3 (see FIG. 1) as makeup water to be supplied to the toilet body 2a.

  As shown in FIG. 2, the ball tap device 60 includes a water supply valve 61, a water saving tank 62, a float member 63, an operation arm member 64 as an arm member, and a floating closing member 65.

The water-saving tank 62 has a bottom portion 621 in which a circular bottom communication hole 621a is formed. The water-saving tank 62 is formed in a rectangular cylindrical shape in which an upper portion of one side portion is opened to the side and an upper portion is opened. You.
The floating closing member 65 is disposed in the bottom communication hole 621 a of the water saving tank 62. The floating closing member 65 has buoyancy, and moves up and down in conjunction with the level of the cleaning water stored in the cleaning tank 4.

The float member 63 moves up and down in conjunction with the level of the wash water stored in the water saving tank 62. The float member 63 has a float portion main body 631 and a float side arm portion 632.
The float main body 631 is arranged inside the water saving tank 62. The float portion main body 631 is formed in a rectangular box shape whose upper part is closed and whose lower part is open.
The float side arm 632 is connected to the upper part of the float main body 631. The float arm 632 extends in the up-down direction.

  The operation arm member 64 moves the connection support portion 611 of the water supply valve 61 in the vertical direction by moving the distal end side in the vertical direction, and operates the water supply valve 61. The operation arm member 64 extends in a direction crossing the vertical direction. The operation arm member 64 has a proximal end connected to the water supply valve 61 and a distal end engaged with the float-side arm portion 632 of the float member 63. The operation arm member 64 moves in the vertical direction with the base end side as a fulcrum in conjunction with the vertical movement of the float member 63.

  The water supply valve 61 is provided in the water supply pipe 501 as shown in FIG. The water supply valve 61 is connected to the operation arm member 64. When the operation arm member 64 moves in conjunction with the vertical movement of the float member 63, the water supply valve 61 opens and closes in an open state for supplying water to the cleaning tank 4 or a closed state for stopping water supply to the cleaning tank 4. It is possible.

  As shown in FIG. 2, the tank lid 42 is disposed on the upper surface of the tank main body 41 and covers the upper surface of the tank main body 41. The tank lid 42 has a first lid 43 and a second lid 44. The first lid 43 and the second lid 44 are formed in a plate shape and cover the upper surface of the tank body 41. The second lid 44 has an opening 444 and a pair of ribs 445 and 445. The opening 444 is formed above the float-side arm 632 of the float member 63 as shown in FIG.

The upper cover 8a is formed so as to cover the cleaning tank 4 and other functional components as shown in FIG.
The pair of side covers 8b, 8b is formed so as to cover both sides in the left-right direction behind the toilet body 2a. The shape of the pair of side covers 8b, 8b is symmetrical in the left-right direction of the toilet body 2a.

According to the washing tank 4 and the toilet bowl washing device 1 of the present embodiment described above, the following effects can be obtained.
In the cleaning tank 4 of the present embodiment, the cleaning tank 4 stores the cleaning water, and includes a bottom 411, a peripheral wall 412 rising from a periphery of the bottom 411, a drain port 11 provided in the bottom 411, and a drain port 11. A valve seat 12 provided on the periphery, a flow path 13 provided on the bottom 411 and communicating with the drain port 11, and a connection port 14 having an opening to which the overflow pipe 46 is connected and communicating with the flow path 13. The drain port 11, the valve seat 12, the flow path 13, and the connection port 14 are integrally formed.
Therefore, the drain port 11, the valve seat 12, the flow path 13, and the connection port 14 are integrally formed on the bottom 411 of the tank main body 41 of the cleaning tank 4, so that the drain port 11, the valve seat 12, the flow path 13, The connection port 14 does not need to be formed by a separate member, and the overflow pipe 46 does not need to be provided with the drain port 11 and the valve seat 12. Thus, by configuring the cleaning tank 4 as described above, the overflow structure can be easily configured. Therefore, the cost for producing the overflow pipe 46 can be reduced.

Further, in the cleaning tank 4 of the present embodiment, the flow path 13 communicates the drain port 11 with the outside of the cleaning tank 4.
Therefore, the flow path 13 that connects the overflow pipe 46 and the drain valve 48 can be formed so as to connect the drain port 11 and the outside of the cleaning tank 4. Accordingly, when the cleaning tank 4 is molded using a mold, the flow path 13 can be easily formed.
Further, in the present embodiment, the flow path 13 extends from the drain port 11 toward the rear of the washing tank 4. Therefore, the flow path 13 can be shortened. Thereby, the flow path 13 can be formed more easily.

  Further, the toilet bowl cleaning device 1 of the present embodiment includes the cleaning tank 4 and an overflow pipe 46 connected to the connection port 14, and the overflow pipe 46 is disposed in the flow path 13 and is provided outside the cleaning tank 4. And a closing part 464 for stopping the flow of water to the water. Therefore, the water flowing into the flow path 13 from the overflow pipe 46 can be stopped by the closing portion 464 to stop the flow of water to the outside of the cleaning tank 4 and be guided to the drain port 11 side. In addition, since the overflow pipe 46 has the closing part 464, the water flowing into the flow channel 13 from the overflow pipe 46 is guided to the drain port 11 side only by connecting the overflow pipe 46 to the bottom part 411 of the cleaning tank 4 and the closing part 464. With 464, the flow of water to the outside of the washing tank 4 in the flow path 13 can be stopped. Further, since the overflow pipe 46 has the closing portion 464, it is not necessary to provide another configuration or another member for closing the flow path 13.

  Further, in the present embodiment, the drainage that is configured to be rotatable (movable) between the cleaning tank 4 and a position that comes into contact with the valve seat 12 and a position that is separated from the valve seat 12, and that opens and closes the drainage port 11. An overflow pipe 46 having a valve 48, an overflow pipe main body 461, and a drain valve support part 45 for rotatably (movably) supporting the drain valve 48 is provided. The overflow pipe main body 461 and the drain valve support part are provided. 465 is formed integrally. Therefore, by providing the overflow valve 46 with the drain valve support portion 45, a structure for supporting the drain valve 48 does not need to be provided on the cleaning tank 4 side.

As described above, the preferred embodiments of the cleaning tank 4 and the toilet bowl cleaning device 1 of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and can be appropriately changed.
For example, in the above-described embodiment, the overflow pipe 46 is provided with the closing portion 464 that is disposed in the flow path 13 and stops the flow of water to the outside of the toilet flush tank 4, but is not limited thereto. The overflow pipe 46 may not include the closing part 464 disposed in the flow path 13. In the toilet cleaning device 1 according to the present embodiment, a base plate 3 is disposed below the cleaning tank 4 as shown in FIGS. Therefore, the water flowing from the flow path 13 is received by the base plate 3 without disposing the closing portion 464 in the flow path 13. The water received by the base plate 3 is led out into the toilet body 2a through a lead-out opening (not shown) formed in the base plate 3.

  Further, in the above embodiment, the flow path 13 is formed to extend in the horizontal direction, but the present invention is not limited to this. The flow path 13 may be formed to extend in an oblique direction.

1 Toilet washing device 4 Wash tank (toilet washing tank)
11 drain port 12 valve seat 13 flow path 14 connection port (connection part for overflow pipe)
46 overflow pipe 48 drain valve 411 bottom 412 peripheral wall (outer wall)
461 Overflow pipe main body 464 Closing part 465 Drain valve support part

Claims (4)

A toilet flush tank for storing flush water,
The bottom,
An outer wall rising from the periphery of the bottom,
A drain port provided at the bottom,
A valve seat provided on the periphery of the drain port,
A channel provided on the bottom portion and communicating with the drain port,
An overflow pipe connecting portion having an opening to which the overflow pipe is connected and communicating with the flow path,
The drain port, the valve seat, the flow path and the overflow pipe connection portion are integrally formed ,
The flow path has a communicating portion for communicating the outside of the toilet flushing tank and the drain outlet, the toilet bowl to the communicating portion, that having a closure to stop the flow of water to the outside of the toilet flushing tank Wash tank. The toilet flush tank according to claim 1 , wherein the flow path is formed so as to extend from the drain port toward the rear of the toilet flush tank. A toilet bowl washing tank according to claim 1 or 2 ,
The overflow pipe connected to the overflow pipe connection portion, and a toilet flushing device,
The above-mentioned overflow pipe is a toilet flushing device which is arranged in the above-mentioned channel, and has the above-mentioned closure part. A toilet bowl washing tank according to claim 1 or 2 ,
A drain valve configured to be movable between a position in contact with the valve seat and a position separated from the valve seat, and opening and closing the drain port.
A toilet flushing device including: an overflow pipe main body; and an overflow pipe having a drain valve supporting portion that movably supports the drain valve.
The toilet flushing device, wherein the overflow pipe main body and the drain valve support portion are integrally formed.

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