JP2019218760A - Washing water tank device - Google Patents

Abstract

To provide a washing water tank device capable of inhibiting a drive unit from being soaked without increasing a size of the drive unit.SOLUTION: A washing water tank device according to an embodiment comprises: a tank for reserving washing water; a drain valve device for opening/closing a drain valve provided at a drain port of the tank; an overflow pipe; a drive unit; and a fixing part. Inside the tank, the overflow pipe is provided beside the drain valve device and is provided so as to extend vertically to make washing water having been higher than a full water level overflow to an aperture formed on the upper end side and be discharged to a toilet bowl. The drive unit drives the drain valve device. The fixing part fixes the drive unit to the overflow pipe so that the drive unit is located above an aperture of the overflow pipe. The fixing part comprises: a body part to which the fixing part is attached; and a cylindrical part that supports the body part and is formed in a cylindrical shape to be fitted with the overflow pipe.SELECTED DRAWING: Figure 2

Description

  The disclosed embodiments relate to a wash water tank device.

  BACKGROUND ART Conventionally, a flush water tank device that stores flush water used for flush toilets is known (for example, see Patent Document 1). The above-described washing water tank device includes a drive unit including an electric drive unit such as a motor, and is configured to operate the drain valve device of the tank by the electric drive unit. In the prior art, the drive unit is arranged outside the tank.

JP-A-2006-056554

  However, in the related art, since the drive unit is arranged outside the tank, for example, it is possible to suppress the flooding of the washing water, but the drive unit and the drain valve device are located relatively far apart. The Rukoto. Therefore, for example, in the case of the electric drive unit of the drive unit, it is necessary to pull up the drain valve of the drain valve device with a relatively large force, which may lead to an increase in the size of the drive unit including the electric drive unit.

  It is an object of one embodiment of the present invention to provide a washing water tank device capable of suppressing the drive unit from being wetted without increasing the size of the drive unit.

  A washing water tank device according to one aspect of the embodiment includes a tank that stores washing water, a drain valve device that opens and closes a drain valve provided at a drain port of the tank, and a side of the drain valve device in the tank. And an overflow pipe extending along the up-down direction and overflowing flush water exceeding the full water level into an opening formed at the upper end side and discharging the flush water to the toilet, and a drive for driving the drain valve device A unit, and a fixing unit for fixing the drive unit to the overflow pipe so as to be positioned above the opening of the overflow pipe, wherein the fixing unit includes a main body to which the drive unit is attached, And a tubular portion that supports the main body and is formed in a tubular shape and fits into the overflow pipe.

  Thereby, it is possible to prevent the drive unit from being wetted without increasing the size of the drive unit. That is, since the overflow pipe is provided on the side of the drain valve device and the drive unit is fixed to the overflow pipe, the drive unit can be arranged closer to the drain valve device. Therefore, for example, in the electric drive unit of the drive unit, it becomes possible to pull up the drain valve of the drain valve device with a small force, compared with the case where the drive unit is disposed outside the tank. It does not lead to an increase in size.

  Further, since the driving unit is positioned above the opening of the overflow pipe by the fixing portion, the washing water in the tank is hardly scattered to the driving unit, and therefore, the driving unit can be prevented from being wet.

  In addition, since the tubular portion is configured to fit into the overflow pipe, the drive unit can be fixed while being positioned at a desired position. In addition, since the cylinder and the overflow pipe are fitted with each other, the cylinder is difficult to rotate with respect to the overflow pipe, and therefore, the drive unit rotates from a predetermined position with respect to the drain valve device and changes its direction. As a result, a decrease in drainage capacity can be suppressed.

  Further, since the tubular portion can be attached to the overflow pipe from above, the drive unit can be easily fixed, and the assemblability of the drive unit can be improved.

  Further, the drive unit includes an operation unit connected to the drain valve of the drain valve device, and the fixed unit is configured such that at least a part of the operation unit projects in a projection plane in which the drain valve device is vertically projected. The drive unit is fixed so as to be located at

  Thus, for example, it is possible to shorten the length of the wire connecting the operation unit and the drain valve device, and thus it is possible to improve the operability of the operation unit with respect to the drain valve device.

  Further, the fixing portion includes a locking portion that locks on an upper end portion of the overflow pipe.

  Accordingly, the downward movement of the fixing portion is regulated by the locking portion, and thus the drive unit fixed by the fixing portion can be prevented from dropping downward.

  Further, a convex portion is formed on one of the peripheral portion of the cylindrical portion and the peripheral portion of the overflow tube, and the other of the peripheral portion of the cylindrical portion and the peripheral portion of the overflow tube has A concave portion to be fitted to the convex portion is formed.

  This makes it difficult for the tubular portion to rotate with respect to the overflow pipe. Therefore, for example, it is possible to suppress a decrease in drainage capacity due to the drive unit rotating from an expected position with respect to the drain valve device and changing its direction.

  Further, the concave portion and the convex portion are formed so as to extend along a vertical direction.

  This makes it possible to increase the contact area between the concave portion and the convex portion. Therefore, for example, the rotation of the cylindrical portion with respect to the overflow pipe can be further suppressed.

  Further, a plurality of concave portions corresponding to one convex portion are formed.

  Thus, for example, in the case of a cylindrical portion having a convex portion formed thereon, the direction of the cylindrical portion can be changed by changing the concave portion to be fitted when the cylindrical portion is attached to the overflow pipe. Thereby, for example, it is possible to appropriately change the direction of the drive unit fixed by the fixing portion including the cylindrical portion according to the specifications of the tank, etc., thereby improving the degree of freedom in designing the washing water tank device. Can be.

  Further, the cylindrical portion is formed so as to expose an upper end portion of the overflow pipe.

  Thereby, it can suppress that the drainage function of an overflow pipe falls. That is, since the cylindrical portion is formed so as to expose the upper end portion of the overflow pipe, the cylindrical portion does not hinder the inflow of the washing water into the overflow pipe, thereby reducing the drainage function of the overflow pipe. Can be suppressed.

  Further, the fixing portion includes a rib portion connecting the cylindrical portion and the main body portion.

  Thus, for example, even when a relatively heavy drive unit is fixed to the main body, the main body can be supported by the ribs, and thus, for example, the fixing part can be inclined or deformed. Can be suppressed.

  According to one aspect of the embodiment, the drive unit can be prevented from being wet without increasing the size of the drive unit.

FIG. 1 is a perspective view showing a toilet device provided with a washing water tank device according to the embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a plan view of the washing water tank device. FIG. 4 is a perspective view of the fixing portion. FIG. 5 is an enlarged perspective view showing the vicinity of the upper end of the overflow pipe. FIG. 6 is an enlarged side view showing the vicinity of the upper end of the overflow pipe. FIG. 7 is a sectional view taken along line VII-VII of FIG. FIG. 8 is a sectional view taken along line VIII-VIII of FIG. FIG. 9 is a cross-sectional view showing a cylindrical portion and an overflow pipe according to a modification.

  Hereinafter, an embodiment of a washing water tank device disclosed in the present application will be described in detail with reference to the accompanying drawings. The present invention is not limited by the embodiments described below.

<1. Toilet device with washing water tank device>
FIG. 1 is a perspective view showing a toilet device provided with a washing water tank device according to the embodiment. Note that FIG. 1 shows a three-dimensional orthogonal coordinate system in which the X-axis direction, the Y-axis direction, and the Z-axis direction which are orthogonal to each other are defined and the Z-axis positive direction is a vertically upward direction for easy understanding. FIG. Such an orthogonal coordinate system may be shown in other drawings used in the following description. 1 and FIG. 2 and subsequent figures are schematic diagrams.

  As shown in FIG. 1, the toilet device 1 includes a toilet body (hereinafter, sometimes referred to as “toilet”) 2 and a flush water tank device 10. The toilet 2 includes a bowl 3, a rim 4, a drain trap pipe 5, and a water conduit 6.

  The bowl part 3 is formed in a bowl shape capable of receiving waste. The rim 4 is formed on the upper edge of the bowl 3. For example, a toilet seat (not shown) is provided above the rim portion 4.

  In addition, a water conduit 6 is connected to the rim portion 4. The water conduit 6 includes a first water outlet 6a and a second water outlet 6b. When the toilet bowl is cleaned, the flush water discharged from the drain port 15 of the flush water tank device 10 flows into the water conduit 6. Then, the washing water in the water conduit 6 is discharged to the bowl portion 3 through the first and second water outlets 6a and 6b, and cleans the bowl portion 3 while turning. Note that the number of water outlets of the water conduit 6 is not limited to two, and may be one or three or more.

  The drain trap line 5 is connected to the bowl portion 3. More specifically, the drain trap line 5 includes an inlet 5a and a reservoir 5b. The inlet 5 a is provided so as to be continuous with the bottom of the bowl 3, and allows the washing water from the bowl 3 to flow into the drain trap pipe 5.

  The reservoir 5b is located downstream of the inlet 5a and has a shape in which a predetermined amount of washing water is stored. The downstream side of the water storage section 5b is connected to a drainage channel (not shown), so that the washing water flowing into the water storage section 5b is discharged from the drainage channel. In this way, the drain trap pipe line 5 prevents the odor and the like from the drain pipe from flowing back to the bowl part 3 by storing the washing water in the reservoir part 5b and functioning as a sealing.

  The toilet 2 is of a so-called siphon type, in which the waste in the bowl portion 3 is drawn in using the siphon action and discharged from the drain trap pipe line 5. For this reason, in the toilet 2, when the toilet is washed, the washing water is drawn into the drain trap line 5 together with the dirt due to the siphon action, so that the washing water of the pool 5 b (hereinafter referred to as “pool water”) Water level) will drop.

  When the water level of the stored water in the stored water portion 5b falls below a predetermined water level, the stored water does not function as a seal, and odors and the like may flow back to the bowl portion 3 side. For this reason, the flush water tank device 10 replenishes the bowl portion 3 with flush water in order to return the water level of the stored water to the initial water level after discharging the waste by flushing the toilet. It will be described later.

  The washing water tank device 10 is installed above the rear of the toilet 2 (in the negative Y-axis direction). The washing water tank device 10 includes a tank 11 for storing washing water. The tank 11 includes a tank body 12 and a lid 13. The tank body 12 is a rectangular parallelepiped container having an open upper surface, and stores washing water for washing the bowl 3 of the toilet 2. The drain port 15 described above is provided on the bottom surface of the tank body 12. The internal configuration of the tank body 12 will be described later with reference to FIG. Further, the shape of the tank main body 12 shown in FIG. 1 and the installation position of the tank main body 12 with respect to the toilet bowl 2 are only examples and are not limited.

  The lid 13 is disposed so as to entirely cover the upper surface of the tank body 12, and is detachably attached to an upper portion of the tank body 12.

  An operation remote controller 20 is provided at an appropriate position in the toilet room where the toilet device 1 is installed. The operation remote controller 20 includes an operation button 21 through which a user inputs a start instruction for starting toilet cleaning, and the like. The operation remote controller 20 outputs a signal indicating a start instruction input from the user via the operation button 21 to a control device (not shown). Although not shown, a human sensor may be provided, and a signal indicating a start instruction may be output based on the output of the human sensor.

<2. Overall configuration of washing water tank device>
FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a plan view of the washing water tank device 10. FIG. 3 shows the cleaning water tank device 10 from which the lid 13 is removed for the sake of convenience.

  As shown in FIGS. 2 and 3, the wash water tank device 10 includes a water supply device 30, a drain valve device 40, a drive unit (electric drive unit) 60, a fixing unit 70, and an overflow pipe 100. These are arranged and accommodated in the tank body 12.

  The water supply device 30 supplies cleaning water into the tank main body 12. For example, the water supply device 30 includes a float 31, and supplies or stops the supply of cleaning water into the tank body 12 in accordance with the vertical movement of the float 31.

  The water supply device 30 further includes a water supply hose 32 for supplying cleaning water. The water supply hose 32 is connected to a supply unit 75 (described later) located above the overflow pipe 100. Thereby, the water supply device 30 supplies the flush water to the overflow pipe 100 via the water supply hose 32 and the replenishing unit 75 in order to return the level of the pool water in the reservoir unit 5b to the initial water level after flushing the toilet, Wash water can be supplied to the bowl portion 3 of the toilet 2.

  The drain valve device 40 includes a drain valve 41 and a wire 42, and is configured to open and close the drain valve 41. Specifically, the drain valve 41 is provided at the drain port 15 and is configured to be vertically movable. Then, the drain valve 41 opens and closes the drain port 15 by the vertical movement. One end of the wire 42 is connected to the drain valve 41. The other end of the wire 42 is connected to the drive unit 60.

  The drive unit 60 includes a drive motor 61 and an operation unit 62, and drives the drain valve device 40. The drive motor 61 is an electric motor that operates the drain valve device 40 by electric drive. The drive motor 61 is an example of an electric drive unit. The operation unit 62 is connected to the drive motor 61 and rotates by driving the drive motor 61. The other end of the wire 42 is connected to the operation unit 62. That is, the operation unit 62 is connected to the drain valve 41 of the drain valve device 40 via the wire 42.

  Then, when a signal indicating a start instruction to start toilet flushing is output from the operation remote controller 20 (see FIG. 1) to the control device, the control device drives the drive motor 61 of the drive unit 60 to rotate the operation unit 62. The wire 42 is wound up. As a result, the drain valve 41 is pulled by the wire 42 and rises, and the drain port 15 is opened. By opening the drain port 15, the washing water in the tank body 12 is drained to the toilet 2 (see FIG. 1), that is, the toilet is washed. Note that the control unit described above may be included in the drive unit 60.

  Note that, in addition to the drive unit 60 described above, a manual drive unit that opens and closes the drain valve 41 by manual operation may be connected to the drain valve device 40.

  The fixing unit 70 is a fixing member that fixes the drive unit 60 to the overflow pipe 100. The detailed configuration of the fixing unit 70 will be described later with reference to FIG.

  The overflow pipe 100 is provided in the tank 11 beside the drain valve device 40, in other words, is provided adjacent to the drain valve device 40. The overflow pipe 100 extends in the tank 11 along the up-down direction. The overflow pipe 100 has an opening 101 (see FIG. 2) formed on the upper end side, and communicates with the drain port 15 on the lower end side. Therefore, the overflow pipe 100 causes the flush water that has exceeded the full water level in the tank body 12 to overflow into the opening 101, and is discharged to the toilet 2 through the drain port 15.

<3. Configuration of Fixed Section>
Next, the fixing portion 70 will be described with reference to FIG. FIG. 4 is a perspective view of the fixing unit 70. As shown in FIG. 4, the fixing unit 70 includes a main body 71, a cylindrical part 72, a convex part 73, a locking part 74, a supply part 75, and a rib part 76. In FIG. 4, the drive unit 60, the overflow pipe 100, and the water supply hose 32 are shown by imaginary lines for convenience of understanding.

<3.1. Main unit>
The drive unit 60 is attached to the main body 71. For example, the main body 71 includes a bottom surface 71a, a first side wall 71b, and a second side wall 71c. The bottom surface portion 71a is formed, for example, in a flat plate shape, and has a shape on which the drive unit 60 can be placed. The first and second side walls 71b and 71c are erected upward from the end of the bottom surface 71a, for example. The first and second side wall portions 71b and 71c are formed to be continuous.

  In the main body 71 configured as described above, the drive unit 60 is placed on the bottom surface portion 71a and the side surfaces of the drive unit 60 are surrounded by the first and second side wall portions 71b and 71c. 60 is attached.

<3.2. Tube part>
The tubular portion 72 is located below the main body 71 and supports the main body 71. The tubular portion 72 is formed in a tubular shape. The cylindrical portion 72 is formed so that the inner diameter is larger than the outer diameter of the overflow pipe 100.

  Then, the cylindrical portion 72 is configured to be moved downward as shown by an arrow A, for example, toward the overflow pipe 100 so as to fit into the overflow pipe 100. In a state where the tubular portion 72 is fitted to the overflow pipe 100, the drive unit 60 is located above the opening 101 of the overflow pipe 100 and is fixed to the overflow pipe 100 as shown in FIG.

  The overflow pipe 100 is provided on the side of the drain valve device 40 as described above, and since the drive unit 60 is fixed to the overflow pipe 100, the drive unit 60 is arranged as close to the drain valve device 40 as possible. can do. Therefore, for example, in the drive motor 61 of the drive unit 60, the drain valve 41 of the drain valve device 40 can be pulled up with a smaller force than when the drive unit 60 is arranged outside the tank 11. Therefore, the size of the drive unit 60 including the drive motor 61 does not increase.

  Further, since the drive unit 60 is positioned above the opening 101 of the overflow pipe 100 and fixed to the overflow pipe 100 by the fixing unit 70, the washing water in the tank 11 is hardly scattered to the drive unit 60, Therefore, the drive unit 60 can be prevented from being wet.

  Further, since the tubular portion 72 is configured to fit into the overflow pipe 100, the drive unit 60 can be fixed while being positioned at a desired position. Further, since the tubular portion 72 and the overflow pipe 100 are fitted together, the tubular portion 72 is less likely to rotate with respect to the overflow pipe 100, so that the drive unit 60 rotates from the expected position with respect to the drain valve device 40. It is possible to suppress a decrease in drainage capacity due to a change in direction.

  Further, since the cylindrical portion 72 is attached to the overflow pipe 100 from above the overflow pipe 100 having a relatively large space in the tank 11, the drive unit 60 can be easily fixed, and the assemblability of the drive unit 60 is improved. Can be done.

  Further, for example, in the case of a configuration in which the overflow tube 100 is screwed with a clip to which the drive unit 60 is attached, for example, the fastening force of the screw decreases with age, and the drive unit 60 is moved from the expected position. It may rotate and cause a decrease in drainage capacity. On the other hand, in the fixing portion 70 according to the present embodiment, since the cylindrical portion 72 is configured to fit into the overflow pipe 100, the drive unit 60 is less likely to rotate from an expected position with age. In addition, a decrease in drainage capacity can be suppressed.

  FIG. 5 is an enlarged perspective view showing the vicinity of the upper end portion 100a of the overflow pipe 100 fitted with the tubular portion 72. FIG. 6 is an enlarged side view showing the vicinity of the upper end 100a of the overflow pipe 100 similarly fitted to the tubular portion 72.

  As shown in FIGS. 5 and 6, the cylindrical portion 72 is formed so as to expose the upper end portion 100 a of the overflow pipe 100. Specifically, as shown in FIG. 6, the cylindrical portion 72 is formed so as to expose the upper end portion 100a of the overflow pipe 100 by a predetermined height H1. Note that the predetermined height H1 can be changed to an arbitrary value.

  Thereby, it can suppress that the drainage function of the overflow pipe 100 falls. That is, the full water level (upper limit water level) in the tank 11 is defined by the height of the upper end 100 a of the overflow pipe 100. Since the cylindrical portion 72 is formed so as to expose the upper end portion 100a, the cylindrical portion 72 does not hinder the inflow of the washing water into the overflow pipe 100, and thus reduces the drainage function of the overflow pipe 100. Can be suppressed.

<3.3. Convex>
Next, the protrusion 73 will be described with reference to FIGS. 7 and 8. FIG. 7 is a sectional view taken along line VII-VII of FIG. FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7, and shows the vicinity of the upper end 100 a of the overflow pipe 100.

  As shown in FIGS. 7 and 8, the convex portion 73 is formed on the inner peripheral edge 72 a of the cylindrical portion 72. For example, as shown in FIG. 7, a plurality of (in this case, four) convex portions 73 are formed along the circumferential direction of the cylindrical portion 72. Further, the convex portions 73 are formed so as to be at a predetermined interval (90-degree interval here) in the circumferential direction of the cylindrical portion 72.

  In addition, the number of the above-mentioned convex parts 73 is only an example and is not limited, and may be, for example, three or less, or five or more. Further, the above-mentioned predetermined interval can be appropriately changed, and the convex portions 73 may be formed at an arbitrary interval.

  In addition, a concave portion 103 to be fitted to the convex portion 73 is formed on the outer peripheral edge portion 100b of the overflow pipe 100. As shown in FIG. 8, both the concave portion 103 and the convex portion 73 are formed so as to extend in the vertical direction (Z-axis direction). The recess 103 is formed so as to extend downward from the upper end 100a of the overflow pipe 100.

  As described above, in the present embodiment, the convex portion 73 is formed on the inner peripheral edge 72 a of the cylindrical portion 72, while the concave portion 103 is formed on the outer peripheral edge 100 b of the overflow pipe 100. 72 can be made more difficult to rotate with respect to the overflow pipe 100. Thus, for example, a decrease in drainage capacity due to the drive unit 60 rotating from its intended position with respect to the drain valve device 40 and changing its direction can be further suppressed.

  As described above, since the concave portion 103 and the convex portion 73 are formed so as to extend in the up-down direction, the contact area between the concave portion 103 and the convex portion 73 can be increased. Thus, for example, the rotation of the cylindrical portion 72 with respect to the overflow pipe 100 can be further suppressed.

  In the above description, the convex portion 73 is formed in the cylindrical portion 72 and the concave portion 103 is formed in the overflow tube 100, but the present invention is not limited to this. That is, for example, although not shown, a concave portion may be formed on the inner peripheral edge portion 72a of the cylindrical portion 72, and a convex portion may be formed on the outer peripheral edge portion 100b of the overflow pipe 100.

  As described above, in the present embodiment, a convex portion is formed on one of the inner peripheral edge portion 72a (an example of the peripheral edge portion) of the cylindrical portion 72 and the outer peripheral edge portion 100b (an example of the peripheral edge portion) of the overflow pipe 100. The other of the inner peripheral edge portion 72a of the cylindrical portion 72 and the outer peripheral edge portion 100b of the overflow pipe 100 has a concave portion that is fitted to the convex portion.

<3.4. Locking part>
Next, the locking portion 74 will be described with reference to FIGS. As shown in FIGS. 5 and 6, the locking portion 74 is a portion that locks to the upper end 100 a of the overflow pipe 100. For example, the locking portion 74 is formed above the cylindrical portion 72.

  Thus, in the present embodiment, it is possible to prevent the drive unit 60 from dropping downward. That is, for example, when attaching the fixing part 70 to the overflow pipe 100, the cylindrical part 72 and the locking part 74 are moved downward toward the overflow pipe 100. When the locking portion 74 is locked to the upper end portion 100a of the overflow pipe 100, the downward movement of the fixed portion 70 including the cylindrical portion 72 and the like is restricted. As described above, the locking portion 74 functions as a stopper of the fixing portion 70, and thereby, it is possible to prevent the drive unit 60 fixed by the fixing portion 70 from dropping downward.

  Further, as shown in FIG. 5, the locking portion 74 is formed so as not to cover the opening 101 of the overflow pipe 100 when locked to the upper end 100 a of the overflow pipe 100. Thus, the locking portion 74 does not prevent the flush water from flowing into the overflow pipe 100, and therefore, does not lower the drainage function of the overflow pipe 100.

<3.5. Supply Department>
Next, the replenishing section 75 will be described with reference to FIGS. As shown in FIGS. 5 and 6, the replenishing unit 75 is located above the overflow pipe 100. The replenishing unit 75 includes a connection port 75a, and the water supply hose 32 is connected to the connection port 75a. Although not shown, a water outlet is opened on the lower surface side of the replenishing unit 75, and the water outlet and the connection port 75a are formed so as to communicate with each other. Thereby, the replenishing part 75 can supply the flush water supplied from the water supply device 30 (see FIG. 2) to the overflow pipe 100, and replenish the flush water to the bowl part 3 of the toilet bowl 2.

<3.6. Rib>
Next, the rib portion 76 will be described with reference to FIG. As shown in FIG. 4, the rib portion 76 is a member that connects the cylindrical portion 72 and the main body portion 71 (specifically, the bottom surface portion 71a of the main body portion 71), and for example, reinforces the support of the main body portion 71 by the cylindrical portion 72. It is a member to do.

  Thereby, for example, even when the relatively heavy drive unit 60 is fixed to the main body 71, the main body 71 can be supported by the ribs 76, so that, for example, the fixing part 70 is inclined, Deformation can be suppressed.

  Here, a position where the drive unit 60 fixed by the fixing unit 70 is arranged in the tank 11 will be described with reference to FIG. As shown in FIG. 3, the fixing unit 70 fixes the operation unit 62 so that a part of the operation unit 62 is located above the drain valve device 40.

  Specifically, the fixing unit 70 fixes the drive unit 60 such that a part of the operation unit 62 is located within a projection plane S that projects the drain valve device 40 in the vertical direction. In FIG. 3, for convenience of understanding, the projection surface S is shown by a two-dot chain line smaller than the outer shape of the drain valve device 40, but the actual projection surface S overlaps the outer shape of the drain valve device 40.

  As described above, since a part of the operation unit 62 is located within the projection plane S of the drain valve device 40, the operation unit 62 can be disposed above the drain valve device 40. Therefore, for example, it is possible to shorten the length of the wire 42 connecting the operation unit 62 and the drain valve device 40, and thus it is possible to improve the operability of the operation unit 62 with respect to the drain valve device 40.

  In the above description, a part of the operation unit 62 is located within the projection plane S of the drain valve device 40. However, the present invention is not limited to this. It may be located in the plane S. That is, the fixing unit 70 may fix the drive unit 60 such that at least a part of the operation unit 62 is located within the projection plane S of the drain valve device 40.

  As described above, the washing water tank device 10 according to the embodiment includes the tank 11, the drain valve device 40, the overflow pipe 100, the drive unit 60, and the fixing unit 70. The tank 11 stores cleaning water. The drain valve device 40 opens and closes a drain valve 41 provided at the drain port 15 of the tank 11. The overflow pipe 100 is provided on the side of the drain valve device 40 in the tank 11, and extends along the vertical direction to overflow the washing water exceeding the full water level into the opening 101 formed on the upper end side. Then, it is discharged to the toilet 2. The drive unit 60 drives the drain valve device 40. The fixing unit 70 fixes the drive unit 60 to the overflow pipe 100 so as to be located above the opening 101 of the overflow pipe 100.

  Further, the fixing part 70 includes a main body part 71 and a cylindrical part 72. The drive unit 60 is attached to the main body 71. The tubular portion 72 supports the main body 71 and is formed in a tubular shape to fit into the overflow pipe 100. Thus, the drive unit 60 can be prevented from being wet without increasing the size of the drive unit 60.

<4. Modification>
Next, a modified example will be described. In the following description, the same parts as those already described are denoted by the same reference numerals as those already described, and redundant description will be omitted.

  In the embodiment described above, the convex portion 73 of the cylindrical portion 72 and the concave portion 103 of the overflow tube 100 are formed so as to form a pair. That is, although one concave portion 103 is formed for one convex portion 73, the present invention is not limited to this.

  FIG. 9 is a cross-sectional view showing a cylindrical portion 72 and an overflow pipe 100 according to a modification. As shown in FIG. 9, in the modified example, the convex portions 73 a to 73 d are formed on the inner peripheral edge 72 a of the cylindrical portion 72. A plurality (three in the example shown in FIG. 9) of recesses 103a to 103d corresponding to the projections 73a to 73d are formed on the outer peripheral edge 100b of the overflow tube 100. In FIG. 9, the concave portion 103a corresponds to the convex portion 73a, the concave portion 103b corresponds to the convex portion 73b, the concave portion 103c corresponds to the convex portion 73c, and the concave portion 103d corresponds to the convex portion 73d.

  Thus, in the modified example, a plurality of concave portions (for example, the concave portion 103a) corresponding to one convex portion (for example, 73a) is formed.

  Therefore, in the cylindrical portion 72 in which the convex portions 73a to 73d are formed, the direction of the cylindrical portion 72 can be changed by changing the concave portions 103a to 103d to be fitted when the cylindrical portion 72 is attached to the overflow pipe 100. Become.

  Thereby, for example, the direction of the drive unit 60 fixed by the fixing portion 70 including the cylindrical portion 72 can be appropriately changed according to the specifications of the tank 11 and the positional relationship with other components in the tank 11. Thus, the degree of freedom in designing the washing water tank device 10 can be improved.

  In the above-described embodiment and modified examples, when the tubular portion 72 and the overflow pipe 100 are fitted, the tubular portion 72 is positioned on the outer peripheral side with respect to the overflow pipe 100. However, the present invention is not limited to this. It may be located on the inner peripheral side.

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

Reference Signs List 10 cleaning water tank device 11 tank 15 drain port 40 drain valve device 41 drain valve 60 drive unit 62 operating section 70 fixing section 71 main body section 72 cylindrical section 73 convex section 74 locking section 76 rib section 100 overflow pipe 103 concave section

Claims (8)

A tank for storing washing water,
A drain valve device that opens and closes a drain valve provided at a drain port of the tank,
An overflow that is provided on the side of the drain valve device in the tank and extends along the up-down direction to overflow flush water exceeding a full water level into an opening formed at an upper end side and discharge the flush water to a toilet. Tubes and
A drive unit for driving the drain valve device,
A fixing unit for fixing the drive unit to the overflow pipe so as to be positioned above the opening of the overflow pipe,
The fixing portion,
A main body to which the drive unit is attached;
A washing water tank device, comprising: a tubular portion that supports the main body portion, is formed in a tubular shape, and fits into the overflow pipe. The drive unit includes:
An operation unit connected to the drain valve of the drain valve device,
The fixing portion,
The washing water tank device according to claim 1, wherein the drive unit is fixed such that at least a part of the operation unit is positioned within a projection plane that projects the drain valve device in a vertical direction. The fixing portion,
The washing water tank device according to claim 1 or 2, further comprising: a locking portion that locks to an upper end portion of the overflow pipe. A convex portion is formed on one of the peripheral portion of the cylindrical portion and the peripheral portion of the overflow tube,
The concave part which fits into the above-mentioned convex part is formed in the other of the above-mentioned peripheral part of the above-mentioned tube part, and the above-mentioned peripheral part of the above-mentioned overflow pipe. The washing water tank device according to 1. The concave portion and the convex portion,
The washing water tank device according to claim 4, wherein the washing water tank device is formed so as to extend along a vertical direction. The washing water tank device according to claim 4, wherein a plurality of the concave portions corresponding to one convex portion are formed. The tubular portion is
The washing water tank device according to any one of claims 1 to 6, wherein the washing water tank device is formed so as to expose an upper end portion of the overflow pipe. The fixing portion,
The washing water tank device according to any one of claims 1 to 7, further comprising a rib portion that connects the cylindrical portion and the main body portion.

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