JP7196657B2 - Cleaning water tank device - Google Patents

Description

The disclosed embodiments relate to wash water tank arrangements.

Conventionally, there has been known a flush water tank device that includes a tank that stores flush water and that supplies the flush water stored in the tank to a toilet bowl.

Patent Literature 1 discloses a washing water tank device that includes a drain valve that closes the drain port of the tank, and a rotating device that opens the drain port by pulling up the drain valve.

The rotating device includes a driving portion such as a DC motor, a shaft extending horizontally from the driving portion, and a ball chain connecting the shaft and the drain valve, and the driving portion is screwed to the tank. firmly fixed to the tank.

JP 2014-70415 A

However, if the drive unit is firmly fixed to the tank, for example, when the drain valve is pulled up, a load may be applied to the fixed position, which may affect the fixed state. If the fixed state of the rotating device is affected, for example, there is a risk that the water drainage operation will be hindered.

One aspect of the embodiments has been made in view of the above, and an object thereof is to provide a flushing water tank device capable of reducing the load applied to the fixing portion of the driving portion.

A wash water tank device according to an aspect of an embodiment includes a tank portion for storing wash water, a drain valve disposed inside the tank portion for closing a drain port formed in the bottom portion of the tank portion, and a rotating device for pulling up the drain valve, wherein the rotating device includes a driving portion that generates a rotating force, a shaft portion that rotates by the rotating force of the driving portion, and the shaft portion and the drain valve that are connected to each other. The tank portion includes an installation surface provided above the cleaning water storage space, a fixing portion provided on the installation surface for fixing the driving portion, and a connection member provided on the installation surface. and a locking portion that locks the driving portion so as to restrict rotation of the driving portion about the axial direction of the shaft portion.

By locking the driving part so that the locking part restricts the rotation of the driving part about the axial direction of the shaft part, the locking part absorbs the force that rotates the driving part generated when the drain valve is pulled up. can do. Therefore, the load on the fixed portion can be reduced.

Also, the distance between the locking portion and the shaft portion is smaller than the distance between the fixing portion and the shaft portion. In this way, by providing the locking portion at a location near the shaft, which is the center of rotation, compared to the case where the locking portion is provided at a location far from the shaft, a gap of the same size can provide a larger position. Misalignment (rotation) can be allowed. In other words, the desired positional deviation tolerance can be achieved with a smaller gap, so the engaging portion can be formed more compact. Further, by providing the fixed portion at a location far from the shaft portion which is the center of rotation, the load applied to the fixed portion when the drive portion rotates can be reduced as much as possible.

Further, the flushing water tank device according to one aspect of the embodiment includes a wall surface having an insertion opening which is erected on the installation surface and into which the shaft portion is inserted, and the locking portion is provided with the insertion port of the shaft portion. It extends along the direction of insertion into the mouth and guides movement of the drive portion in the direction of insertion.

In this manner, since the locking portion extends along the insertion direction of the shaft portion, the driving portion is moved to the locking portion as the driving portion is moved to insert the shaft portion into the insertion opening. can be locked. Further, the movement of the driving portion in the insertion direction can be guided by the engaging portion. Therefore, workability and maintainability can be improved.

Further, the driving portion has a fixed portion that abuts on the fixing portion, and the fixing portion rotates the shaft portion due to the rotational force of the driving portion to pull up the drain valve. It is provided on the back side of the fixed portion in the direction in which the portion is about to rotate. As a result, the fixed portion can receive the rotation of the driving portion during the normal cleaning operation.

Further, the fixing portion has a screw hole used for fixing the driving portion, and the screw hole is provided at a position higher than the locking portion.

In this way, by providing the screw hole of the fixing portion at a position higher than that of the locking portion, it is possible to improve workability and maintainability for a worker who accesses the screw hole from above.

According to one aspect of the embodiment, it is possible to reduce the load applied to the fixed portion of the drive unit.

FIG. 1 is a diagram showing the configuration of a flush toilet according to an embodiment. FIG. 2 is a perspective view of the washing water tank device according to the embodiment. FIG. 3 is a plan view of the washing water tank device according to the embodiment. FIG. 4 is a sectional view along line IV-IV shown in FIG. FIG. 5 is a perspective view of a tank body and lid according to the embodiment. FIG. 6 is a perspective view of the rotating device according to the embodiment. FIG. 7 is a perspective view showing a state in which the rotating device is attached to the lid. FIG. 8 is a side view of the lid and pivoting device; 9 is a schematic enlarged view of the H portion shown in FIG. 8. FIG.

Hereinafter, embodiments of the flush water tank apparatus disclosed in the present application will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by embodiment shown below.

<Configuration of flush toilet>
First, the configuration of a flush toilet provided with a flush water tank device according to an embodiment will be described with reference to FIG. FIG. 1 is a diagram showing the configuration of a flush toilet according to an embodiment.

For convenience of explanation, FIG. 1 shows a three-dimensional orthogonal coordinate system including the Z-axis whose positive direction is vertically upward. Further, hereinafter, the surface on the positive side of the X-axis is defined as the "left side", the surface on the negative side of the X-axis is defined as the "right side", the surface on the positive side of the Y-axis is defined as the "front", and the surface on the negative side of the Y-axis is defined as the "front". The side surface is defined as the "back surface". Therefore, hereinafter, the X-axis direction may be referred to as the left-right direction, the Y-axis direction as the front-rear direction, and the Z-axis direction as the up-down direction.

As shown in FIG. 1 , the flush toilet 1 includes a toilet body 2 , an exterior cover 3 , and a flush water tank device 4 . The toilet bowl body 2 is installed on the floor surface of the toilet room, and the exterior cover 3 is installed on the upper part of the toilet bowl body 2 . Also, the washing water tank device 4 is arranged inside the exterior cover 3 . In addition, the toilet body 2 is not limited to a floor-mounted type, and may be a wall-mounted type. Also, the flush water tank device 4 may be installed at a location away from the toilet body 2 .

The toilet bowl main body 2 has a bowl portion 21 for receiving waste, a water conduit 22 for guiding wash water supplied from the wash water tank device 4 to the bowl portion 21, and an inlet connected to a lower portion of the bowl portion 21. and a drain trap line 23 for draining the waste into a drain line (not shown). The drainage trap line 23 constitutes a trap section.

The bowl portion 21 is formed with a first water outlet 24 and a second water outlet 25 for discharging washing water supplied from the water conduit 22 . The first water spout 24 is formed in the upper portion of the bowl portion 21 , and the washing water discharged from the first water spout 24 descends while swirling to wash the bowl portion 21 . The second water outlet 25 is formed in the lower portion of the bowl portion 21, and the wash water (storage surface W0 indicated by a dashed line) stored in the lower portion of the bowl portion 21 generates a swirling flow that swirls in the vertical direction. Let

The drainage trap pipeline 23 has an inlet below the storage surface W0, and includes an ascending channel portion extending upward from the inlet and a descending channel portion extending downward from the end of the ascending channel portion and connected to the drain pipe. have.

The flush water tank device 4 has a tank portion for storing flush water supplied from an external water supply source, and supplies the flush water stored in the tank portion to the water conduit 22 of the toilet body 2 through a drain port 51 . do. The washing water tank device 4 is covered with an exterior cover 3 so that the washing water tank device 4 is not visually recognized by the user.

<Configuration of washing water tank device>
Next, the configuration of the wash water tank device 4 will be described with reference to FIGS. 2 to 4. FIG. FIG. 2 is a perspective view of the washing water tank device 4 according to the embodiment. FIG. 3 is a plan view of the washing water tank device 4 according to the embodiment. FIG. 4 is a sectional view along line IV-IV shown in FIG.

As shown in FIGS. 2 to 4, the washing water tank device 4 includes a tank body 5, a lid 6, a water supply device 7, a drainage device 8, and a rotation device 9.

The tank main body 5 stores washing water supplied from a water supply device 7, which will be described later. A drain port 51 is provided at the bottom of the tank body 5 . The lid 6 is provided on the top of the tank body 5 and covers the upper opening of the tank body 5 . The lid 6 is provided with an opening 61 that communicates with the inside of the tank body 5 .

The water supply device 7 is connected to an external water supply source (not shown) through a water supply pipe L, and flushes water supplied from the water supply source to the tank body 5 from above the tank body 5 through the opening 61 of the lid 6 . inside the

The water supply device 7 includes a primary side water supply channel portion 71 (see FIG. 4 ), a secondary side water supply channel portion 72 , an intermediate channel portion 73 , and a spout portion 74 . The primary-side water supply channel portion 71 extends vertically and is connected to the water supply pipe L (see FIG. 2) at its lower end. The secondary water supply channel portion 72 has a cylindrical shape with a closed end (downstream end) and extends horizontally (here, in the left-right direction) toward the opening 61 provided in the lid 6 . . The intermediate flow path portion 73 is provided between the primary side water supply flow path portion 71 and the secondary side water supply flow path portion 72, and connects the primary side water supply flow path portion 71 and the secondary side water supply flow path portion 72. . The intermediate flow passage portion 73 includes, for example, an electromagnetic valve device 75 (see FIG. 3) that switches between discharging water to the secondary water supply flow passage portion 72 and stopping water, A mechanical opening/closing valve device 76 or the like is provided for switching between water discharge to the secondary side water supply channel portion 72 and water stop by the float.

The drainage device 8 is arranged inside the tank body 5 . The drainage device 8 causes the wash water stored in the tank body 5 to flow out to the conduit 22 (see FIG. 1) by opening the drainage port 51 .

The drainage device 8 comprises an overflow pipe 81 , a drainage valve 82 and a guide 83 . The overflow pipe 81 is a cylindrical pipe member extending vertically. The overflow pipe 81 communicates with the drain port 51 , and when the water level of the wash water in the tank body 5 exceeds the height position of the upper end of the overflow pipe 81 , the inside of the overflow pipe 81 flows from the upper end of the overflow pipe 81 . The wash water that has flowed into is discharged to the water conduit 22 through the drain port 51 .

A drain valve 82 is provided at the lower end of the overflow pipe 81 and closes the drain port 51 . The guide 83 is provided so as to surround the overflow pipe 81, and guides the vertical movement of the overflow pipe 81 by the rotating device 9, which will be described later.

The rotating device 9 opens and closes the drain valve 82 by vertically moving the overflow pipe 81 . The rotating device 9 includes a driving portion 91 that generates a rotating force, a shaft portion 92 that rotates by the rotating force of the driving portion 91, one end attached to the tip of the shaft portion 92, and the other end attached to the overflow pipe 81. and a connection member 93 such as a ball chain. The drive unit 91 includes, for example, a rotary motor such as a DC motor, and a casing that houses the rotary motor. The shaft portion 92 is connected to the rotary motor of the drive portion 91 and horizontally protrudes outside the drive portion 91 through the casing of the drive portion 91 . A mounting portion 921 extending in a direction orthogonal to the axial direction of the shaft portion 92 is provided at the tip of the shaft portion 92 , and the connecting member 93 is mounted on the mounting portion 921 . In the embodiment, the shaft portion 92 extends along the X-axis direction, and the attachment portion 921 extends further to the Y-axis negative direction side than the shaft portion 92 .

When the driving portion 91 rotates the shaft portion 92 so as to lift the connecting member 93 upward, the overflow pipe 81 and the drain valve 82 provided on the overflow pipe 81 are lifted together with the connecting member 93, and the drain port 51 is opened. be done. As a result, the wash water stored in the tank main body 5 is supplied from the drain port 51 to the water conduit 22 . Further, when the driving portion 91 rotates the shaft portion 92 so as to pull the connecting member 93 downward, the overflow pipe 81 and the drain valve 82 descend together with the connecting member 93 . As a result, the drain port 51 is closed by the drain valve 82 , thereby stopping the water supply from the tank body 5 to the water conduit 22 .

The rotating device 9 also includes a lever 94 for manually rotating the shaft portion 92 . The lever 94 is provided on the opposite side (X-axis negative direction side) to the side (X-axis positive direction side) on which the shaft portion 92 of the driving portion 91 is provided. The lever 94 is provided on the same axis as the rotation axis of the shaft portion 92 , and the user can rotate the shaft portion 92 in conjunction with the lever 94 by rotating the lever 94 . Thus, according to the rotating device 9, the drain valve 82 can be manually opened and closed, for example, during a power outage.

<Regarding the mounting structure of the rotating device>
Next, the mounting structure of the rotating device 9 will be described with reference to FIGS. 5 and 6. FIG. FIG. 5 is a perspective view of the tank body 5 and lid 6 according to the embodiment. FIG. 6 is a perspective view of the rotating device 9 according to the embodiment.

As shown in FIG. 5 , the lid 6 further includes an installation surface 62 , a wall surface 63 , a fixing portion 64 and a locking portion 65 .

The wall surface 63 is part of the wall surrounding the opening 61 and is erected at the edge of the opening 61 on the installation surface 62 . The wall surface 63 is formed with an insertion opening 631 into which the shaft portion 92 is inserted. The insertion port 631 is open along the axial direction of the shaft portion 92 (here, the X-axis direction), and the shaft portion 92 is inserted into the insertion port 631 along the axial direction. The installation surface 62 is a flat surface adjacent to the opening 61 with the wall surface 63 interposed therebetween, and blocks the storage space of the tank body 5 from above.

The fixing portion 64 and the locking portion 65 are provided on the installation surface 62 . The fixed portion 64 includes a projecting portion 641 projecting upward from the installation surface 62 , a contact surface 642 formed at the upper end of the projecting portion 641 , and a screw hole 643 formed in the contact surface 642 .

The locking portion 65 is a rail-shaped member extending along the insertion direction of the shaft portion 92 into the insertion opening 631 and has an I-shaped cross section. Specifically, the locking portion 65 includes a base portion 651 provided on the installation surface 62 , a constricted portion 652 extending upward from the center of the base portion 651 , and extending from the upper end of the constricted portion 652 in a direction perpendicular to the insertion direction. A pair of wide portions 653a and 653b extending along (here, the Y-axis direction) are provided. The wide portion 653a protrudes in the positive Y-axis direction, and the wide portion 653b protrudes in the negative Y-axis direction.

As shown in FIG. 6 , the driving portion 91 of the rotating device 9 further includes a fixed portion 95 and a locked portion 96 .

The fixed portion 95 is a plate-like member that horizontally protrudes from the peripheral surface of the drive portion 91 along the direction (Y-axis direction) orthogonal to the insertion direction of the shaft portion 92, and is integrated with the drive portion 91 (casing). formed A screw hole 951 is formed in the fixed portion 95 .

The locked portion 96 is a member extending along the insertion direction of the shaft portion 92 into the insertion opening 631, and includes a pair of vertical portions 961a and 961b and a pair of horizontal portions 962a and 962b. The pair of vertical portions 961a and 961b are spaced apart in a direction perpendicular to the insertion direction (Y-axis direction) and extend downward. A pair of horizontal portions 962a and 962b are provided at lower ends of a pair of vertical portions 961a and 961b and extend in a direction toward each other. Specifically, the horizontal portion 962a protrudes in the Y-axis negative direction, and the horizontal portion 962b protrudes in the Y-axis positive direction.

The distance between the pair of vertical portions 961a and 961b is greater than the distance from the tip of the wide portion 653a to the tip of the wide portion 653b in the locking portion 65 (the full width of the pair of wide portions 653a and 653b). Also, the distance between the pair of horizontal portions 962 a and 962 b is smaller than the full width of the pair of wide portions 653 a and 653 b and larger than the width of the constricted portion 652 .

The operator inserts the shaft portion 92 of the turning device 9 into the insertion opening 631 formed in the wall surface 63 of the lid 6 by horizontally moving the turning device 9 along the axis of the shaft portion 92 . Then, the locked portion 96 is slid into the locking portion 65 as the rotating device 9 is moved, and the pair of horizontal portions 962a and 962b of the locked portion 96 are aligned with the base portion of the locking portion 65. It enters between 651 and a pair of wide portions 653a and 653b (on the sides of constricted portion 652). As a result, the driving portion 91 of the rotating device 9 is locked by the locking portion 65 .

As described above, the locking portion 65 extends in the direction of insertion of the shaft portion 92 , that is, in the axial direction of the shaft portion 92 . , the driving portion 91 can be locked to the locking portion 65 . Further, the movement of the driving portion 91 in the axial direction can be guided by the locking portion 65 . Therefore, workability and maintainability can be improved.

It should be noted that when the rotating device 9 is attached to the lid 6 , the locking portion 65 locks the driving portion 91 so as to restrict the rotation of the driving portion 91 about the axial direction of the shaft portion 92 . , which will be discussed later.

Further, when the shaft portion 92 of the rotating device 9 is inserted into the insertion port 631 , the fixed portion 95 of the rotating device 9 contacts the contact surface 642 of the fixing portion 64 from above, and the fixed portion 95 The position of the screw hole 951 and the position of the screw hole 643 of the fixing portion 64 are aligned. The operator inserts the screw S from above the fixed portion 95 into the screw hole 951 of the fixed portion 95 and the screw hole 643 of the contact surface 642 of the fixed portion 64 . Thereby, the rotating device 9 is fixed to the lid 6 by screws. As shown in FIG. 7 , the screw hole 643 provided in the fixed portion 64 is provided at a position higher than the locking portion 65 . Therefore, it is possible to improve workability and maintainability for a worker who accesses the screw hole 643 from above.

8 is a side view of the lid 6 and the rotating device 9. FIG. 9 is a schematic enlarged view of the H portion shown in FIG. 8. FIG.

As described above, the attachment portion 921 of the shaft portion 92 extends in the negative axial direction of the shaft portion 92 (see FIG. 2), and the rotating device 9 rotates counterclockwise when viewed from the direction of FIG. The drain valve 82 can be pulled up by rotating the shaft portion 92 . Hereinafter, this operation will be referred to as "normal cleaning operation". During the normal washing operation, the rotation device 9 receives a clockwise force around the shaft portion 92 as viewed from the direction of FIG. (indicated by solid arrows) are in effect.

On the other hand, as shown in FIG. 9, a gap G1 is formed between the wide portion 653b of the locking portion 65 and the horizontal portion 962b of the locked portion 96. As shown in FIG. The same applies to the space between the wide portion 653a of the locking portion 65 and the horizontal portion 962a of the locked portion 96. As shown in FIG. Since the gap G1 is provided between the locking portion 65 and the locked portion 96 in this way, the clockwise force that rotates the rotating device 9 about the shaft portion 92 that is generated during the normal cleaning operation is reduced. It can be absorbed in the gap G1.

Further, as described above, for example, in the event of a power failure, the user or the like rotates the lever 94 counterclockwise when viewed from the direction of FIG. be able to. This operation is described as "blackout cleaning operation". During the power failure cleaning operation, a counterclockwise force (indicated by a dashed arrow in FIG. 8) acts on the rotating device 9 around the shaft portion 92 .

On the other hand, as shown in FIG. 9, a gap G2 is formed between the wide portion 653a of the locking portion 65 and the vertical portion 961a of the locked portion 96. As shown in FIG. The same applies to the space between the wide portion 653b of the locking portion 65 and the vertical portion 961b of the locked portion 96. As shown in FIG. Since the gap G2 is provided between the locking portion 65 and the locked portion 96 in this way, the counterclockwise force that rotates the rotating device 9 around the shaft portion 92 is generated during the power failure washing operation. can be absorbed in the gap G2.

As described above, the flush toilet 1 according to the embodiment can absorb the force that rotates the rotating device 9 about the shaft portion 92 by the engaging portion 65, so that the rotating device 9 is fixed to the locking portion 65. The load generated on the fixed portion 64 and the fixed portion 95 can be reduced.

7 and 8, the locking portion 65 and the locked portion 96 are arranged forward (Y-axis positive direction side) of the shaft portion 92, and the fixed portion 64 and the locked portion 95 is arranged behind the shaft portion 92 (on the Y-axis negative direction side).

8, the distance between the locking portion 65 and the shaft portion 92 is smaller than the distance between the fixed portion 64 and the shaft portion 92. As shown in FIG. That is, the locking portion 65 is provided at a position closer to the shaft portion 92 than the fixed portion 64 is.

In this way, by providing the locking portion 65 at a location near the shaft portion 92 that is the center of rotation, compared to the case where the locking portion 65 is provided at a location far from the shaft portion 92, a gap of the same size can be obtained. , a larger misalignment (rotation) can be tolerated. In other words, the desired misalignment tolerance can be achieved with a smaller gap. Therefore, the engaging portion 65 can be made smaller. Further, by providing the fixed portion 64 at a location far from the shaft portion 92 which is the center of rotation, the load applied to the fixed portion 64 when the drive portion 91 rotates can be reduced as much as possible.

Further, as shown in FIG. 8 , the fixing portion 64 is provided below the fixed portion 95 of the rotating device 9 . In other words, the fixing portion 64 is provided on the back side of the fixed portion 95 in the direction in which the driving portion 91 tends to rotate during the normal washing operation (the clockwise direction when viewed from the direction in FIG. 8). As a result, the rotation of the driving portion 91 during the normal cleaning operation can be received by the fixing portion 64 . It should be noted that the fixed portion 64 is also preferably configured to receive the rotation of the driving portion 91 even during a cleaning operation other than during normal cleaning (for example, a cleaning operation during a power failure or the like).

As described above, the washing water tank device 4 according to the embodiment includes the tank portion (the tank main body 5 and the lid 6 as an example), the drain valve 82 and the rotating device 9 . The tank part stores cleaning water. The drain valve 82 is arranged inside the tank portion and closes the drain port 51 formed in the bottom portion of the tank portion. The rotating device 9 pulls up the drain valve 82 . The rotating device 9 also includes a driving portion 91 , a shaft portion 92 and a connecting member 93 . The drive unit 91 generates a rotational force. The shaft portion 92 is rotated by the rotational force of the drive portion 91 . The connecting member 93 connects the shaft portion 92 and the drain valve 82 . The tank portion also includes an installation surface 62 , a fixing portion 64 and a locking portion 65 . The installation surface 62 is provided above the cleaning water storage space. The fixing portion 64 is provided on the installation surface 62 and fixes the driving portion 91 . The locking portion 65 is provided on the installation surface 62 and locks the driving portion 91 so as to restrict rotation of the driving portion 91 about the axial direction of the shaft portion 92 .

By locking the driving portion 91 so that the locking portion 65 restricts the rotation of the driving portion 91 about the axial direction of the shaft portion 92, the force that rotates the driving portion 91 is generated when the drain valve 82 is pulled up. can be absorbed in the locking portion 65 . Therefore, the load on the fixed portion 64 can be reduced.

Also, the distance between the engaging portion 65 and the shaft portion 92 is smaller than the distance between the fixed portion 64 and the shaft portion. In this way, by providing the locking portion 65 at a location near the shaft portion 92 that is the center of rotation, compared to the case where the locking portion 65 is provided at a location far from the shaft portion 92, a gap of the same size can be obtained. , a larger misalignment (rotation) can be tolerated. In other words, the desired misalignment tolerance can be achieved with a smaller gap. Therefore, the engaging portion 65 can be made smaller. Further, by providing the fixed portion 64 at a location far from the shaft portion 92 which is the center of rotation, the load applied to the fixed portion 64 when the drive portion 91 rotates can be reduced as much as possible.

Further, the washing water tank device 4 according to the embodiment is provided with a wall surface 63 that stands on the installation surface 62 and has an insertion opening 631 into which the shaft portion 92 is inserted along the axial direction. In addition, the locking portion 65 extends along the insertion direction of the shaft portion 92 into the insertion opening 631 and guides the movement of the drive portion 91 in the insertion direction.

As described above, the locking portion 65 extends along the insertion direction of the shaft portion 92 , that is, along the axial direction of the shaft portion 92 . The driving portion 91 can be locked to the locking portion 65 along with the operation. Further, the movement of the driving portion 91 in the insertion direction can be guided by the locking portion 65 . Therefore, workability and maintainability can be improved.

Further, the driving portion 91 has a fixed portion 95 that abuts on the fixing portion 64 . Further, the fixing portion 64 is provided on the back side of the fixed portion 95 in the direction in which the driving portion 91 tends to rotate when the shaft portion 92 is rotated by the rotational force of the driving portion 91 and the drain valve 82 is pulled up. be done. As a result, the rotation of the driving portion 91 during the normal cleaning operation can be received by the fixing portion 64 .

The fixing portion 64 also has a screw hole 643 used for fixing the drive portion 91 , and the screw hole 643 is provided at a position higher than the locking portion 65 . By providing the screw hole 643 of the fixing portion 64 at a position higher than the locking portion 65 in this manner, workability and maintainability for an operator who accesses the screw hole 643 from above can be improved.

In the above-described embodiment, an example in which the tank portion is configured to be separable into the tank main body 5 and the lid 6 has been described, but in the tank portion, the tank main body 5 and the lid 6 are integrally configured. It can be anything.

Further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspects of the invention are not limited to the specific details and representative embodiments so shown and described. Accordingly, various changes may be made without departing from the spirit or scope of the general inventive concept defined by the appended claims and equivalents thereof.

1 flush toilet bowl 2 toilet body 3 exterior cover 4 flush water tank device 5 tank body 6 lid 7 water supply device 71 primary side water supply channel portion 72 secondary side water supply channel portion 73 intermediate channel portion 74 spout portion 8 drainage device 81 overflow pipe 82 drain valve 83 guide 9 rotating device 91 driving part 92 shaft part 93 connecting member

Claims (5)

a tank portion for storing washing water;
a drain valve disposed inside the tank portion for closing a drain port formed in the bottom portion of the tank portion;
and a rotating device for pulling up the drain valve,
The rotating device is
a driving unit that generates a rotational force;
a shaft portion rotated by the rotational force of the driving portion;
a connection member that connects the shaft portion and the drain valve,
The tank part is
an installation surface provided above the cleaning water storage space;
a fixing portion provided on the installation surface for fixing the driving portion;
A washing water tank device, comprising: a locking portion provided on the installation surface and locking the driving portion so as to restrain rotation of the driving portion about the axial direction of the shaft portion. 2. The flush water tank device according to claim 1, wherein a distance between said engaging portion and said shaft portion is smaller than a distance between said fixed portion and said shaft portion. a wall surface erected on the installation surface and having an insertion opening into which the shaft is inserted;
The locking portion is
The washing water tank device according to claim 1 or 2, extending along the insertion direction of the shaft portion into the insertion port, and guiding the movement of the driving portion in the insertion direction. The drive unit
having a fixed portion that abuts on the fixed portion;
The fixed part is
3. The shaft portion is provided on the back side of the fixed portion in a direction in which the driving portion tends to rotate when the drain valve is pulled up by rotating the shaft portion due to the rotational force of the driving portion. The washing water tank device according to any one of . The fixed part is
Having a screw hole used for fixing the driving part,
The washing water tank device according to any one of claims 1 to 4, wherein said screw hole is provided at a position higher than said engaging portion.

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