JP7077663B2 - Washing water tank device and flush toilet equipped with it - Google Patents

Description

The present invention relates to a washing water tank device mounted on a toilet bowl and a flushing toilet equipped with the washing water tank device.

Conventionally, as a washing water tank device for washing a flush toilet with washing water and discharging filth, for example, a drain valve provided in the washing water tank by a drive unit (rotary shaft unit for automatic operation) having a motor inside. Those that open and close are known (Patent Document 1). In Patent Document 1, an opening is formed on the side wall surface of the washing water tank, and the drive unit is fixed to the opening.

In recent years, particularly low-silhouette wash water tanks have been preferred, and tanks having various shapes are known. In tanks of such various shapes, the full water level (the height of the upper end of the overflow pipe) of the wash water tank is different, so it is necessary to optimize the drive unit so that it will not be submerged. That is, it was necessary to provide an optimum arrangement of the washing water tank and an optimum drive unit for each product.

On the other hand, in Patent Document 2, a drive unit for automatic washing is arranged outside the washing water tank, and a tube or a wire is washed with water connected to a drain valve through a notch formed above the washing water tank. The toilet bowl device is disclosed. In such a flush toilet device, since the tank shape does not cause a problem in the arrangement of the drive unit, the drive unit can be applied to various tank shapes.

Japanese Unexamined Patent Publication No. 2010-001640 Japanese Unexamined Patent Publication No. 2016-056554

However, when the drive unit is arranged outside the washing water tank, the path length between the drain valve and the drive unit is longer than when the drive unit is arranged inside the water storage tank. The lengths of the tubes and wires will also be long.

Therefore, as the path length between the drain valve and the drive unit and the length of the tube and wire become longer, the tolerance and variation of these lengths, the sliding resistance between the tube and the wire, etc. become more common in the drain valve. This will greatly affect the amount of operation, the amount of operation of the drain valve will vary, problems will occur in the opening and closing operation of the drain valve, and it will be difficult to operate properly.

Further, since the path length between the drain valve and the drive unit and the length of the tube and the wire become long, the force required for opening and closing the drain valve increases, and it is necessary to increase the output of the motor. As a result, there is a problem that the drive unit itself becomes bloated and the cost increases.

Therefore, the present invention has been made to solve the above-mentioned problems, and is a washing water tank device in which the degree of freedom in installing the drive unit is improved and the operation performance of the drain valve is improved even in various tank shapes. , And to provide a flush toilet equipped with it.

In order to achieve the above object, according to the washing water tank device according to the uniform state of the present invention, the washing water tank device having a washing water tank for storing the washing water is used to provide washing water for washing the toilet bowl. A water supply device that supplies water from the water source into the wash water tank, a drain valve device that is installed on the bottom of the wash water tank to open and close the drainage channel that communicates with the toilet, and a drain valve device that stores water in the wash water tank. An overflow pipe that discharges the washing water to the drainage flow path from the opening formed at the upper edge when the washing water exceeds the full water level, and a drive unit that drives the drainage valve device to open and close the drainage flow path. The drive unit is fixed to the overflow pipe by a fixing member so as to be located above the opening of the overflow pipe, and the fixing member has a support portion in contact with the inner wall of the washing water tank.

In the present invention configured in this way, since the drive unit is provided in the overflow pipe so as to be located above the overflow pipe, it is driven above the full water level regardless of the tank shape. The unit is located and the drive unit does not come into contact with the wash water. Further, since the drive unit is provided in the overflow pipe of the drain valve device, the drive unit and the drain valve device can be brought close to each other. Therefore, the drain valve device can be efficiently opened and closed.

Here, since the drive unit is provided in the overflow pipe extending in the vertical direction, the drain valve device rotates together with the overflow pipe due to the weight of the drive unit, which affects the sealing performance of the drain valve device. there is a possibility. However, according to the present invention, since the fixing member is provided with a support portion that comes into contact with the inner wall surface of the washing water tank to support the drive unit, the overflow pipe and the support portion ensure that the drive unit is connected to the overflow pipe. It will be possible to support it above.

Further, in one aspect of the present invention, the support portion extends downward from the fixing member and comes into contact with the bottom surface of the washing water tank to support the drive unit.

In the present invention configured as described above, since the support portion is in contact with the bottom surface of the wash water tank, it can be reliably supported by the bottom surface of the wash water tank in the downward direction where the weight of the drive unit is applied.

Further, in the uniform state of the present invention, the drive unit has an operation unit and an electric drive unit, the operation unit is located above the opening of the overflow pipe, and the support unit is located below the electric drive unit.

In the present invention configured as described above, the drive unit has an operation unit for operating the drain valve and an electric drive unit having a motor or the like, and the operation unit is located above the opening of the overflow pipe, so that drainage is performed. The length distance from the valve device can be reduced, and the operability of the drain valve device can be improved. Further, in the drive unit, since there is a support portion below the motor portion where the weight becomes large, it is possible to reliably give an instruction from below, and it is possible to suppress the influence on the performance of the drain valve.

Here, "located above the opening of the overflow pipe" indicates that it is located directly above the opening, and "located below the electric drive unit" indicates that it is located directly below the electric drive unit. It is a thing.

Further, in one aspect of the present invention, the length of the support portion can be adjusted in the vertical direction.

In the present invention configured as described above, since the length of the support portion can be adjusted in the vertical direction, the support portion and the bottom surface of the washing water tank can be adjusted by adjusting the length regardless of the tank shape. And can be brought into contact with each other, and the drive unit can be reliably supported from below.

Further, in one aspect of the present invention, the fixing member has a cap portion that abuts on the upper end of the overflow pipe and covers the peripheral edge of the opening.

In the present invention configured as described above, since the cap portion is provided so as to cover the upper end forming the opening of the overflow pipe and the peripheral edge of the opening of the overflow pipe, a special fixing tool is provided by the two contact surfaces. The fixing member can be reliably fixed to the overflow pipe without the need for.

Further, in one aspect of the present invention, the water supply device has a make-up water supply means for supplying wash water to the overflow pipe, and the cap portion has a make-up water guiding portion for guiding the make-up water supply means into the inside of the overflow pipe. It is provided.

In the present invention configured as described above, since the vicinity of the opening of the overflow pipe is covered with the cap portion, it becomes difficult to supply the washing water from the make-up water supply means to the inside of the overflow pipe. However, since the cap portion is provided with the make-up water guiding means for guiding the make-up water supply means into the inside of the overflow pipe, the replenishment operation can be performed while being supported by the cap portion.

According to the present invention, it is provided a washing water tank device having improved the degree of freedom in installing a drive unit and improving the operation performance of a drain valve even in various tank shapes, and a washing toilet bowl equipped with the washing water tank device. With the goal.

It is a perspective view which shows the flush toilet equipped with the flush water tank device in one Embodiment of this invention. It is a front sectional view which shows the II-II cross section of the washing water tank apparatus in one Embodiment of this invention. It is a partial perspective view which shows the drive unit in one Embodiment of this invention. It is a partially enlarged front view which shows the drive unit fixed to the drain valve device in one Embodiment of this invention. It is a partially enlarged side view which shows the drive unit fixed to the drain valve device in one Embodiment of this invention.

Hereinafter, embodiments of the invention disclosed in the present specification will be described in detail with reference to the drawings. From the following description, many improvements and other embodiments of the present invention will be apparent to those skilled in the art. Therefore, the following description should be construed as an example only and is provided for the purpose of teaching those skilled in the art the best embodiments of the present invention. The details of its structure and / or function can be substantially modified without departing from the spirit of the present invention.

First, as shown in FIGS. 1 and 2, the flush toilet 1 provided with the flush water tank device 4 to which the drain valve device 28 according to the embodiment of the present invention is applied includes a toilet body 2 that receives filth and the toilet body 2. It is provided with a rectangular washing water tank device 4 provided above the rear of the toilet bowl main body 2. The wash water tank device 4 includes a water storage tank 6 for storing wash water for washing the toilet bowl. Further, above the water storage tank 6, a lid 8 that is detachably fixed so as to cover the opening portion almost entirely is provided. Further, a drainage port 10 penetrating in the vertical direction is provided at the bottom of the water storage tank 6. In addition, one embodiment of the present invention may be a flush toilet in which the flush water tank device 4 and the toilet body 2 are separately formed, and the wash water tank device 4 and the toilet body 2 are integrated. It may be a flush toilet bowl formed in.

Further, as shown in FIG. 1, the toilet body 2 of the flush toilet bowl 1 includes a bowl portion 12 provided on the front side thereof and a rim portion 14 formed on the upper edge of the bowl portion 12. ..
Further, an inlet 16a of the drain trap pipeline 16 is opened at the bottom of the bowl portion 12 of the toilet body 2, and the drain trap pipeline 16 behind the inlet 16a is under the floor via a drain socket (not shown) or the like. It is connected to the drain pipe (not shown).
The flush toilet 1 according to the present embodiment may be a so-called siphon-type flush toilet that sucks in the filth in the bowl portion 12 by utilizing the siphon action and discharges it to the outside at once from the drain trap pipeline 16. In addition, the flush toilet 1 is not limited to the siphon type flush toilet, but is another type such as a so-called wash-off type flush toilet that flushes out filth by the running water action due to the drop of water in the bowl portion. It can also be applied to the flush toilet.

Next, the toilet body 2 has a headrace 20 into which the wash water discharged from the drain port 10 of the water storage tank 6 flows in, and a first rim spout 22 formed near the center on the left side when viewed from the front of the rim portion 14. And a second rim spout 24 (see FIG. 1) formed on the right rear side when viewed from the front of the rim portion 14.
Further, the headrace 20 forms a flow path that extends from the center of the rear of the toilet bowl body 2 toward the front side and then branches to extend to the first rim spout 22 or the second rim spout 24. The wash water discharged from the drain port 10 of the water storage tank 6 flows from the center behind the toilet bowl body 2 toward the front side in the headrace 20, and then is branched to the first rim spout 22 or the second rim. Reach the spout 24. The washing water discharged from each of the first rim spout 22 and the second rim spout 24 cleans the bowl portion 12 and discharges filth from the drain trap pipeline 16.

Next, the internal structure of the washing water tank device 4 according to the embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 2, the washing water tank device 4 opens the drain port 10 for the water supply device 26 for supplying the washing water into the water storage tank 6 and the washing water stored in the water storage tank 6, and the toilet bowl main body 2. It is provided with a drain valve device 28 for flowing out to the headrace 20.

The water storage tank 6 has a drive unit 42 for automatic cleaning that drives the drain valve device 28 to automatically open and close the drain valve body 40 arranged inside the casing 41, and a side portion of the water storage tank 6. It is composed of a manual operation unit 38 that is provided and can manually operate the opening / closing operation of the drain valve body 40 of the drain valve device 28.

The manual operation unit 38 is provided separately from the drive unit 42. The manual operation unit 38 is composed of a manual operation lever 46 arranged outside the water storage tank portion 6 so that the user can operate it, and a rotation mechanism unit 48 interlocking with the manual operation lever. Further, an operation member 50 for manual operation is connected to the drain valve device 28.

In one embodiment of the present invention, the washing water tank device 4 provided with the manual operation unit 38 operated by the lever is shown, but the washing water tank device 4 may be operated by a push button type. Further, in the case of performing only automatic cleaning, the manual operation unit 38 may not be provided.

Further, the water supply device 26 is attached to a water supply pipe 30 which is connected to an external water supply source (not shown) and is provided so as to extend upward from the bottom of the water storage tank 6 and an upper end portion of the water supply pipe 30. A water supply valve 32 that switches between water discharge and water stoppage of the wash water supplied from the water supply pipe 30 into the water storage tank 6, and water discharge and water stoppage by the water supply valve 32 that moves up and down according to fluctuations in the water level in the water storage tank 6. It is equipped with a float 34 for switching between.

In the water supply device 26, the washing water that has passed through the water supply valve 32 is discharged into the water storage tank 6 from the water discharge port (not shown). Further, when the wash water in the water storage tank 6 is drained to the toilet bowl by the drain valve device 28, the water level of the wash water is lowered and the float 34 is lowered, whereby the water supply valve 32 is opened and the water is discharged from the spout. Is started, and water is discharged into the water storage tank 6 from an external water supply source (not shown) of the water storage tank 6. Further, when the water discharge is continued and the water level in the water storage tank 6 rises, the float 34 rises, whereby the water supply valve 32 is closed and the water discharge from the water discharge port is stopped. As a result, the water level of the washing water in the water storage tank 6 is maintained at the predetermined water level (WL1) when the water is full.

Further, the water supply device 26 includes a refill pipe (make-up water supply means) 36, and the washing water from the refill pipe 36 flows directly into the overflow pipe 58 and is made up of water via the headrace 20 of the toilet body 2. It can be supplied into the bowl portion 12.

Next, the basic structure of the drain valve device 28 according to the embodiment of the present invention will be described with reference to FIG. As shown in FIG. 2, the washing water tank device 4 includes a drain valve device 28 provided in the water storage tank section 6 and arranged at the center of the water storage tank section 6 in the left-right direction when viewed from the front side. The drain valve device 28 includes a drain valve body 40 that opens and closes a drain port 10 formed so as to penetrate in the vertical direction at the center in the left-right direction when viewed from the front side at the bottom of the water storage tank portion 6. It is a so-called direct-acting drain valve device that opens and closes the drain port 10 by moving the body 40 up and down.

The drain valve device 28 includes a casing 41 that forms the appearance of the drain valve device 28, a drain valve body 40 that moves vertically inside the casing 41 to open and close the drain port 10 of the water storage tank 6, and the casing 41. The drain valve device 28 is opened and closed by pulling the drain valve body 40 upward by an operation from the outside of the above.

The drain valve device 28 further includes an overflow pipe 58 extending in the vertical direction on the side of the casing 41. The overflow pipe 58 is the overflow pipe 58.
The downstream end of the inside communicates with the drain port 10 below the drain valve body 40. The overflow pipe 58 can be discharged to the drain valve device 28 when the washing water in the water storage tank 6 exceeds the water level (WL1) at a height corresponding to the upper end position of the overflow pipe 58.

Although not shown, the upper end of the overflow pipe 58 is open, the opening surface is formed in a cylindrical shape, and a predetermined thickness is provided between the outer peripheral wall and the inner peripheral wall of the overflow pipe. Is.

Next, the drive unit 42 shown in FIGS. 2 and 3 will be described.
The washing water tank device 4 includes a drive unit 42 for automatic washing that drives the drain valve device 28 to automatically open and close the drain valve body 40. The drive unit 42 includes an electric drive unit 52 having a built-in motor (not shown) that electrically drives the drain valve device 28, and an operation unit that pulls up the drain valve body 40 of the drain valve device 28 by driving the motor. 54 and. Further, the drive unit 42 includes an elongated electric operation member 56 that connects the drain valve device 28 and the operation unit 54 and operates the opening / closing operation of the drain valve body 40 by driving the electric drive unit 52. There is. Further, the electric drive unit 52 of the drive unit 42 has a rotation shaft 60, and the electric drive unit 52 and the operation unit 54 are arranged in parallel on the axis (A1-A2) of the rotation shaft 60.

The drive unit 42 is operated by a motor electrically driven based on a signal from a sensor or the like that detects the user of the toilet bowl (or a control signal transmitted from a control unit that receives the signal from the sensor or the like). The drain valve device 28 is operated via the above.
The drive unit 42 is electrically driven by a motor based on a signal from a wall-mounted remote controller or the like (not shown) (or a control signal transmitted from a control unit that has received a signal from a sensor or the like). The wire is pulled up, but the drive is not limited to this and may be driven by various triggers.

4 and 5 show a state in which the drive unit 42 is fixed to the drain valve device 28 according to the embodiment of the present invention, FIG. 4 is a partial cross-sectional view in a front view, and FIG. 5 is a partial cross-sectional view in a side view. Is.

As shown in FIG. 4, the drive unit 42 is installed above the overflow pipe 58 by the fixing member 62, and the fixing member 62 is attached to the main body portion 64 fixed to the drive unit 42 and the overflow pipe 58. A cap portion 66 and a support portion 68 extending downward from the fixing member 62 and abutting the bottom surface (dotted line in FIGS. 4 and 5) of the water storage tank 6 are provided.

First, the drive unit 42 is attached to the main body 64, and the main body 64 is formed so that the bottom surface is flat, and the drive unit 42 is placed on the flat bottom surface. Further, the electric drive unit 52 has a rotating shaft 60 that rotates, and the rotating shaft 60 is inserted into an opening formed on the side surface of the main body portion 62 and fixed to the main body portion from the outside by a fixing nut.

In one embodiment of the present invention, the drive unit 42 is fixed as described above, but the present invention is not limited to this, and the drive unit 42 and the main body portion 64 may be fixed by, for example, bolts or the like.

Further, the main body portion 64 is integrally formed with a cap portion 66 for attaching to the overflow pipe 58. The cap portion 66 is provided on the entire circumference of the opening so as to be in contact with the upper end forming the opening of the overflow pipe 58, and the cap portion 66 is also in contact with the peripheral edge of the overflow pipe 58. Here, the "upper end" refers to the upward surface of the uppermost open end of the overflow pipe 58, and the "periphery" refers to the entire circumference of the side wall surface on the outer side of the overflow pipe 58 near the upper end. That is, the cap portion 66 is provided in a cap shape (cover shape) so as to cover the opening of the overflow pipe 58, whereby the drive unit 42 can be reliably supported from the two surfaces of the upper end and the peripheral edge.

Further, the main body portion 64 is provided with a support portion 68 for supporting the drive unit 42 by the bottom surface of the water storage tank 6. The support portion 68 extends downward from the flatly formed bottom surface of the main body portion 62, and the lower end thereof is provided so as to abut on the bottom surface of the water storage tank 6.

Here, the overflow pipe 58 is provided so as to be located on the side of the casing 41 forming the appearance of the drain valve device 28, and when the weight of the drive unit 42 is applied to the overflow pipe 58, the drain port 10 is used as a base point. A moment is generated in the drain valve device 28 (a load is applied in the direction in which the drain valve device 28 rotates). This may affect the sealing performance of the drain valve device 28.

However, according to one embodiment of the present invention, since the support portion 68 supports the drive unit 42 by the bottom surface of the water storage tank 6, the overflow pipe 58 does not affect the sealing performance of the drain valve device 28. The drive unit 42 can be installed above. In the present embodiment, the mode in which the bottom surface of the water storage tank 6 and the support portion 68 come into contact with each other has been described. It is also preferable to have a form of contact.

As described above, according to one embodiment of the present invention, the cap portion 66 and the support portion 68 formed on the main body portion 64 make it possible to provide the drive unit 42 above the overflow pipe 58, depending on the shape of the tank. Even if the water level (WL1) at the time of full water changes, it is possible to suppress the submersion of the drive unit. Further, since the drive unit 42 is arranged inside the water storage tank 6, the length of the operation member 56 for electric operation can be shortened, and the operation performance of the drain valve body 40 can be improved.

Next, the support portion 68 is formed so as to extend downward from the bottom surface (immediately below the electric drive portion 52) corresponding to the portion where the electric drive portion 52 is arranged in the main body portion 64. That is, the support portion 68 is configured to support the electric drive portion 52 from the bottom surface of the water storage tank 6. In the drive unit 42, the electric drive portion 52 including the motor generally has the heaviest weight, but since the support portion 68 is provided in this portion, the drain valve is caused by the moment generated in the drain valve device 28. It is possible to suppress the influence on the sealing performance of the device 28.

Further, it is preferable that the support portion 68 is composed of two parts. That is, the support portion 68 is configured as a male screw portion 68a and a female screw portion 68b, and by adjusting the length of the support portion 68 by this, even if the water level (WL1) at the time of full water changes depending on the tank shape, the water storage tank 6 The drive unit 42 can be supported from the bottom surface of the. In the present embodiment, the length is adjusted by a screw type, but the length is not limited to this, and the support portion 68 may be configured as one component.

Next, as shown in FIGS. 4 and 5, the operation unit 54 of the drive unit 42 is arranged so as to be located above the opening of the overflow pipe 58 (immediately above the opening of the overflow pipe 58). As a result, the operation unit 54 can be arranged closer to the drain valve body 40 side, so that the operation performance of the drain valve body 40 can be improved.

Further, the cap portion 66 is provided with a make-up water guiding portion 70 for guiding the refill pipe (make-up water supply means) 36 into the inside of the overflow pipe 58. The make-up water guide portion 70 is provided with a connection portion 72 connected to the refill pipe 36 and an opening (not shown) for supplying make-up water to the inside of the overflow pipe 58 in communication with the connection portion 72. Therefore, even if the cap portion 66 is provided so as to cover the opening of the overflow pipe 58, the refill pipe (make-up water supply means) 36 can be supplied to the inside of the overflow pipe 58.

The embodiments of the present invention have been described in detail above, but this is merely an example, and the present invention can be configured in a form in which various modifications are made without departing from the spirit of the present invention.

1 Washing toilet bowl 2 Toilet bowl body 4 Washing water tank device 6 Water storage tank (washing water tank)
8 lid 10 drainage port (drainage channel)
12 Bowl part 14 Rim part 16 Drain trap pipeline 16a Inlet 20 Headrace 22 1st rim spout 24 2nd rim spout 26 Water supply device 28 Drain valve device 30 Water supply pipe 32 Water supply valve 34 Float 36 Refill pipe (make-up water supply) means)
38 Manual operation unit 40 Drain valve body 41 Casing 42 Drive unit 46 Manual operation lever 48 Rotation mechanism unit 50 Operation member (for manual operation)
52 Electric drive unit 54 Operation unit 56 Operation member (for electric operation)
58 Overflow pipe 60 Rotating shaft 62 Fixing member 64 Main body 66 Cap 68 Support 68a Male thread 68b Female thread 70 Make-up water guide 72 Connection

Claims (6)

A washing water tank device having a washing water tank for storing washing water.
A water supply device that supplies washing water for washing the toilet bowl from the water source into the washing water tank, and
A drain valve device provided on the bottom surface of the washing water tank to open and close the drainage flow path communicating with the toilet bowl.
An overflow pipe provided in the drain valve device and draining the washing water from the opening formed in the upper edge to the drainage flow path when the washing water stored in the washing water tank exceeds the full water level.
A drive unit that drives the drain valve device to open and close the drain flow path, and
Equipped with
The drive unit is fixed to the overflow pipe by a fixing member so as to be located above the opening of the overflow pipe , and receives the weight of the drive unit and is located above the opening of the overflow pipe. The fixing member has a support portion that comes into contact with the inner wall of the wash water tank to support the drive unit so as to support the direction in which the drain valve device rotates, and the support portion is the wash water tank. A wash water tank device characterized by an adjustable length to the inner wall of the . The washing water tank device according to claim 1, wherein the support portion extends downward from the fixing member and comes into contact with the bottom surface of the washing water tank to support the drive unit. The drive unit has an operation unit and an electric drive unit, the operation unit is located above the opening of the overflow pipe, and the support unit is located below the electric drive unit. Item 2. The washing water tank device according to item 2. The washing water tank device according to claim 3, wherein the support portion has an adjustable length in the vertical direction. The washing water tank device according to any one of claims 1 to 4, wherein the fixing member has a cap portion that abuts on the upper end of the overflow pipe and covers the peripheral edge of the opening. The water supply device has a make-up water supply means for supplying wash water to the overflow pipe, and the cap portion is provided with a make-up water guiding portion for guiding the make-up water supply means into the inside of the overflow pipe. The washing water tank device according to claim 5, wherein the washing water tank device is characterized.

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