JP7094488B2 - Washing water tank device and flush toilet equipped with it - Google Patents

Description

The present invention relates to a washing water tank device, and more particularly to a washing water tank device capable of storing washing water for washing a toilet bowl in the event of a power failure, and a washing toilet bowl including the washing water tank device.

As shown in Patent Document 1, as a washing water tank device capable of storing washing water in the event of a power failure, washing water is supplied to the washing water tank by a water supply device provided with an electromagnetic valve device and a mechanical on-off valve device. Tank devices are known.

As shown in FIG. 11, in the washing water tank device 118, among the water supply devices 132, a mechanical on-off valve device (not shown) provided with a float (not shown) for detecting the water level in the washing water tank 120. , And the water supply port 146 and the like for discharging water into the washing water tank 120 need to be arranged inside the washing water tank.
On the other hand, the solenoid valve device 152 is arranged outside the washing water tank 120 in order to suppress the adverse influence of the steam generated from the washing water in the washing water tank 120. Along with this, a flow path for closing the valve body of the solenoid valve device 152 is also arranged outside the washing water tank 120. The water supply pipe 130 that supplies the washing water from the water supply source to the washing water tank 120 is formed so as to rise from below the washing water tank 120. The water supply pipe 130 is arranged on the side side of the washing water tank device 118. If the water supply pipe 130 is extended so as to stand up relatively straight, it can be connected to the solenoid valve device 152 relatively easily. Therefore, in order to arrange the water supply pipe 130 and the solenoid valve device 152, the washing water tank 120 has a notched structure 121 in which a part of the side portion thereof is recessed from the upper end portion to the lower end portion toward the inside of the tank. It was forming.

Japanese Unexamined Patent Publication No. 2014-70415

However, the region where the notch structure 121 is formed in the wash water tank 120 becomes a region that cannot be used as a water storage region, and it is necessary to raise the full water level in order to store a specified amount of wash water in the wash water tank 120. rice field. Therefore, it is necessary to increase the height of the washing water tank 120, and there is a problem that the low silhouette that lowers the height of the washing water tank device 118 is hindered.

Further, in the washing water tank device 118, the electromagnetic valve device 152 of the water supply device 132 and the flow path on the electromagnetic valve side are arranged on the external side across the wall surface of the washing water tank 120, and sandwich the wall surface of the washing water tank 120. A mechanical on-off valve device and a water supply port 146 are arranged on the inner side, and these are communicated by a relatively long-distance flow path penetrating the wall surface. Therefore, there is also a problem that the water supply device is easily formed as a relatively large device and it is difficult to make the washing water tank device 118 a low silhouette.

Further, since the notch structure 121 is formed at a position on the rear side so as to be hidden from the front of the washing water tank 120, it is possible to perform connection work and maintenance work of the connection portion between the water supply pipe 130 and the water supply device 132. There was a problem that it was difficult. Further, there is a problem that it is difficult to assemble because the flow path of the water supply device 132 is arranged so as to penetrate the wall surface of the washing water tank 120.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and provides a washing water tank device capable of reducing the silhouette of a washing water tank device capable of storing washing water in the event of a power failure. The purpose is to do.

In order to achieve the above object, the present invention is a wash water tank device capable of storing wash water in the event of a power failure, and is a wash water that stores wash water to be supplied to a toilet bowl and has a first opening formed in the upper portion. The tank, the water supply pipe that supplies the wash water from the external water supply source of the wash water tank to the wash water tank, the water supply device that supplies the wash water into the wash water tank, and the first opening. The water supply device has a lid-like member for covering, a water supply port provided inside the washing water tank, a connecting part connected to the water supply pipe outside the washing water tank, and the connecting part. A water supply flow path extending from the water supply port to the water supply port, an electric flow path opening / closing device for opening and closing the water supply flow path by an electromagnetic valve mechanism provided outside the lid-shaped member, and an electric flow path opening / closing device provided inside the washing water tank. A mechanical flow path opening / closing device for opening / closing the water supply flow path by a mechanical mechanism is provided, and the washing water tank has a first bottom surface and a connection portion of the water supply device above the first bottom surface and above the first bottom surface. It is characterized by having a second bottom surface formed above.
In the present invention configured as described above, in the washing water tank device capable of storing wash water in the event of a power failure, the water supply device is an electric flow that opens and closes the water supply flow path by an electromagnetic valve mechanism provided on the outside of the lid-shaped member. When the passage opening / closing device and the mechanical flow path opening / closing device for opening / closing the water supply flow path by a mechanical mechanism provided inside the washing water tank are provided, the washing water tank has a first bottom surface and the first bottom surface. It is provided with a second bottom surface formed above the bottom surface of 1 and above the connection portion of the water supply device. In the washing water tank device having such a structure, washing water can be stored in a region above the second bottom surface. According to the present invention, the washing water can be stored in the area formed as a relatively large notch area to the lower part of the water supply device and cannot be used as the water storage area in the conventional washing water tank, and the washing water tank is filled with water. The water level can be lowered. Therefore, in the washing water tank device capable of storing the washing water in the event of a power failure, the washing water tank device can be made into a low silhouette.
Further, for example, in a washing water tank device capable of storing washing water in the event of a power failure, the steam generated from the washing water in the washing water tank is generated by providing the electromagnetic valve mechanism of the electric flow path opening / closing device on the outside of the lid-shaped member. It is possible to suppress adverse effects on the electromagnetic valve mechanism. Further, most of the water supply devices, for example, a water supply flow path having a basic structure other than the electric flow path opening / closing device and a mechanical flow path opening / closing device are provided inside the washing water tank. Therefore, the distance between the water supply flow path extending in the washing water tank and the mechanical flow path opening / closing device can be made relatively short. As a result, the water supply device can be formed in a relatively small size, and it is not necessary to provide the washing water tank with a notch for arranging the flow path of the water supply device so as to straddle the wall surface of the washing water tank as in the conventional case. As in the invention, the washing water tank that houses most of the water supply device can be formed in a relatively small size. Therefore, in the washing water tank device capable of storing the washing water in the event of a power failure, the washing water tank device can be made into a low silhouette.

In the present invention, preferably, the second bottom surface of the wash water tank is formed in the lateral region of the wash water tank.
In the present invention configured as described above, since the second bottom surface of the wash water tank is formed in the lateral region of the wash water tank, the water arranged on the side of the center of the wash water tank. It is possible to suppress the distance extending the supply pipe laterally to the connection portion below the second bottom surface. Therefore, in order to secure a space in which the water supply pipe can be arranged, the size of the region notched toward the inside of the washing water tank can be suppressed. Therefore, it is possible to suppress a decrease in the capacity of the washing water tank, and it is possible to make the washing water tank device a lower silhouette.

In the present invention, preferably, the second bottom surface of the wash water tank extends to the side wall of the wash water tank.
In the present invention configured as described above, the accommodation space for accommodating the connection portion of the water supply device can be formed relatively compactly below the second bottom surface, and the connection portion can be formed from the side of the washing water tank. Connection work and maintenance work can be performed, and workability for the connection part can be improved.

In the present invention, preferably, the second bottom surface of the wash water tank extends to the vertical wall on the front side of the wash water tank.
In the present invention configured as described above, the connection portion and the maintenance work of the connection portion can be performed from the front side of the washing water tank to the connection portion of the water supply device arranged below the second bottom surface. Workability for the connection portion can be further improved.

In the present invention, preferably, the lid-shaped member includes a first lid-shaped member formed so as to partially cover the first opening and forming a second opening smaller than the first opening, and the above-mentioned lid-shaped member. A second lid-like member covering the second opening is provided, and by combining the first lid-like member and the second lid-like member, the first lid-like member and the second lid can be combined. A mounting structure is formed such that the mounting portion of the electric flow path opening / closing device is sandwiched between the shaped members.
In the present invention configured as described above, by combining the first lid-shaped member and the second lid-shaped member, the electric motor is placed between the first lid-shaped member and the second lid-shaped member. It can be mounted so as to sandwich the mounting portion of the type flow path switching device. Therefore, it is possible to suppress the adverse effect of steam on the electric flow path opening / closing device, to make the washing water tank device a low silhouette, and to assemble a structure in which the electric flow path opening / closing device is provided on the outside of the lid-shaped member. It is possible to improve the sex.

In the present invention, preferably, a sealing member for sealing between the outer periphery of the mounting portion of the electric flow path switching device and the mounting structure is provided.
In the present invention configured as described above, when the electric flow path opening / closing device is provided on the outer side of the lid-shaped member, the sealing member is attached to the outer periphery of the mounting portion of the electric flow path opening / closing device. It is possible to suppress water leakage from between the mounting structure formed by the lid-shaped member 1 and the second lid-shaped member.

In the present invention, preferably, the first lid-shaped member of the lid-shaped member is provided with a brim portion, and a guiding portion for guiding water is formed in the brim portion.
In the present invention configured as described above, the first lid-shaped member is provided with a brim portion, and a guide portion for guiding water is formed in the brim portion. 1 Even if water leaks to the outside of the lid-shaped member, water can be guided from the brim to the part that is not affected even if it gets wet with water through the guide part, and other electronic devices with water leaks. The effect on the water can be suppressed.

In the present invention, preferably, a substrate provided below the wash water tank and supporting the wash water tank is provided, and the substrate is formed in a U shape on the upper surface thereof and below the guide portion. It has a water receiving part.
In the present invention configured as described above, the substrate includes a water receiving portion formed in a U shape on the upper surface thereof and below the downstream end of the guiding portion. Therefore, it is possible to prevent the water that has fallen from the guide portion from scattering to the surroundings due to the impact of the collision with the water receiving portion, and it is possible to prevent the water from adhering to the electronic device or the like attached to the substrate.

In the present invention, preferably, the electric flow path opening / closing device is provided on the front side of the washing water tank.
In the present invention configured as described above, since the electric flow path opening / closing device is provided on the front side of the washing water tank, it is electrically operated from the front side of the washing water tank when the maintenance worker performs the maintenance work. It is possible to approach the type flow path switchgear and improve workability during maintenance.

Further, the present invention is a flush toilet bowl provided with a flush water tank device according to an embodiment.
In the present invention configured as described above, the flush toilet bowl including the wash water tank can be made into a low silhouette.

According to the washing water tank device of the present invention, the washing water tank device can be made into a low silhouette in the washing water tank device capable of storing wash water in the event of a power failure.

It is sectional drawing of the flush toilet to which the flush water tank device according to one embodiment of the present invention is applied. It is a perspective view which looked at the washing water tank apparatus by one Embodiment of this invention from the front left side. It is a top view of the washing water tank apparatus by one Embodiment of this invention. It is a front view of the washing water tank apparatus by one Embodiment of this invention. It is a top view which looked at the washing water tank device by one Embodiment of this invention from above with the 2nd lid-like member removed. It is a top view which looked at the washing water tank device by one Embodiment of this invention from above with the 1st lid-like member and the 2nd lid-like member removed. FIG. 3 is a cross-sectional view taken along the line VII-VII of FIG. It is sectional drawing seen along the line VIII-VIII of FIG. It is sectional drawing seen along the IX-IX line of FIG. It is sectional drawing seen along the X-ray line of FIG. It is a perspective view of the conventional washing water tank device seen from the diagonally upper left side behind the toilet bowl.

Next, the washing water tank device according to the embodiment of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIG. 1, a flush toilet to which the flush water tank device according to the embodiment of the present invention is applied will be described.
FIG. 1 is a cross-sectional view of a flush toilet to which the flush water tank device according to the embodiment of the present invention is applied.

As shown in FIG. 1, reference numeral 1 indicates a flush toilet, the flush toilet 1 includes a toilet body 2, and the toilet body 2 includes a bowl portion 4, a water passage 6, and a bowl portion 4. A drain trap pipeline 8 communicating with the lower portion is formed.
At the upper edge of the bowl portion 4 of the toilet body 2, an overhanging rim 10 and a first spout 12 for discharging the washing water supplied from the headrace 6 are formed, and the first spout 12 is formed. The washing water discharged from the bowl descends while swirling to wash the bowl portion.
The flush toilet 1 of the present embodiment is an example of applying the present invention to a floor-standing flush toilet, but the present invention can also be applied to other, for example, a wall-mounted flush toilet.

Below the bowl portion 4, a reservoir portion 14 whose storage surface W ₀ is indicated by a alternate long and short dash line is formed. An inlet 8a of the drain trap pipeline 8 opens below the water reservoir 14, and an ascending passage 8b extends rearward from the inlet 8a. A descending path 8c is continuous with the ascending path 8b, and the lower end of the descending path 8c is connected to an underfloor drainage pipe (not shown) via a drainage socket (not shown). Further, a second spout 16 for discharging the washing water supplied from the headrace 6 is formed above the storage surface W ₀ of the bowl portion 4, and the washing water discharged from the second spout 16 is formed. A swirling flow that swirls the pooled water of the pool portion 14 in the vertical direction is generated.

A washing water tank device 18 for storing the washing water supplied to the toilet body 2 is provided above the headrace 6 of the toilet body 2, and the washing water stored in the washing water tank device 18 is supplied to the toilet body 2. It is supposed to be done. The wash water tank device 18 is a so-called low silhouette tank formed so that its height is relatively low. The washing water tank device 18 has a function of storing washing water in the event of a power failure. The washing water tank device 18 is covered with an exterior cover 19. The wash water tank device 18 includes a wash water tank 20 for storing wash water to be supplied to the toilet bowl, and a drain port 22 extending in the vertical direction is formed at the bottom of the wash water tank 20. The lower end communicates with the headrace 6 of the toilet bowl body 2, and the wash water in the washwater tank 20 is supplied from the drain port 22 to the headrace 6 of the toilet bowl body 2.

The toilet body 2 is provided with a control unit 21 capable of controlling the operation of the washing water tank device 18 on a substrate 35 described later (see FIG. 1). The control unit 21 is an operation unit (not shown) that is provided on the wall surface and can be operated by the user to start cleaning by wire or wirelessly, an electric flow path of a float switch 28, a rotation device 38, and a water supply device 32, which will be described later. It is electrically connected to the switchgear 52 and the like. The control unit 21 has a built-in CPU, memory, etc., and has a function of sending an operation signal to each of these devices, etc., and operating each device, etc. by operating the operation unit or setting itself.

Next, the details of the washing water tank device 18 will be described with reference to FIGS. 2 to 10.
FIG. 2 is a perspective view of the washing water tank device according to the embodiment of the present invention as viewed from the front left side, FIG. 3 is a top view of the washing water tank device according to the embodiment of the present invention, and FIG. 4 is the present invention. FIG. 5 is a front view of the washing water tank device according to the embodiment, and FIG. 5 is a top view of the washing water tank device according to the embodiment of the present invention as viewed from above with the second lid-shaped member removed. 6 is a top view of the washing water tank device according to the embodiment of the present invention as viewed from above with the first lid-shaped member and the second lid-shaped member removed, and FIG. 7 is the line VII-VII of FIG. It is a sectional view seen along the line, FIG. 8 is a sectional view seen along the line VIII-VIII of FIG. 3, and FIG. 9 is a sectional view seen along the line IX-IX of FIG. 10 is a cross-sectional view taken along the line XX of FIG. In FIG. 7, the full water level when the wash water tank is full is shown by WL1.
Hereinafter, in the description in one embodiment of the present invention, the front side when viewed from the user side using the flush toilet bowl 1 (the user side standing in front of the flush toilet bowl 1 to use the flush toilet bowl 1). The side is the front side (front side), the back side is the rear side when viewed from the user, the right side of the washing water tank device 18 is the right side when viewed from the front, and the left side is the left side when viewed from the front. 18 is described as the right side or the left side when viewed from the front as the side side.

As shown in FIGS. 2 to 8, the wash water tank device 18 has a wash water tank 20 having a first opening 24 formed in its upper portion, and a drain port for the wash water stored in the wash water tank 20. From the drain valve device 26 that opens 22 to flow out to the headrace 6 of the toilet body 2, the float switch 28 that electrically detects the full water level WL1 of the wash water tank 20, and the external water supply source of the wash water tank 20. The water supply pipe 30 for supplying the wash water to the wash water tank 20, the water supply device 32 for supplying the wash water into the wash water tank 20, the lid-shaped member 33 covering the first opening 24, and the wash water tank 20. It is provided with a substrate 35 for supporting the above.

As shown in FIG. 7, the drain valve device 26 opens and closes the drain valve 36 by moving the overflow pipe 34, the drain valve 36 fixed to the lower end of the overflow pipe 34, and the overflow pipe 34 up and down. It is equipped with a moving device 38. The drain valve 36 sits on a drain valve seat 37 provided on the bottom surface of the washing water tank 20 to seal the drain port 22. Further, a guide member 40 that guides the vertical movement of the drain valve 36 and regulates the height position is attached to the peripheral portion of the drain port 22 of the washing water tank 20.

The overflow pipe 34 is a cylindrical pipe member extending in the vertical direction. Then, when the water level of the washing water in the washing water tank 20 rises above the full water level WL1 and exceeds the height position of the upper end of the overflow pipe 34, the washing water overflows and the washing water overflows from the upper end of the overflow pipe 34. It is supplied to the toilet bowl main body 2 side from the drain port 22 of the washing water tank 20 through the inside of the cylindrical tube.

Further, the rotating device 38 is a driving device provided with a driving means such as a DC motor, and a ball chain 44 is attached to the tip of a rotating shaft 42 extending from the rotating device 38. The lower portion of the ball chain 44 is attached to the overflow pipe 34. When the rotating device 38 rotates the rotating shaft 42 so as to pull up the ball chain 44, the overflow pipe 34 rises together with the ball chain 44, and the rotating device 38 rotates the rotating shaft 42 so as to pull down the ball chain 44. Then, the overflow pipe 34 descends together with the ball chain 44.
The rotating device 38 is provided with a manual operation mechanism that allows the user to directly rotate the operating lever (not shown) to rotate the rotating shaft 42 to open and close the drain valve 36 in the event of a power failure. ..

The float switch 28 is arranged above the inside of the washing water tank 20 and is attached so that its axial center portion faces downward from the top of the washing water tank 20. The float switch 28 electrically detects a predetermined full water level WL1 and transmits the detection signal to the control unit 21.

As shown in FIGS. 2, 9 and 10, the water supply pipe 30 is a floor-standing type flush toilet 1 in which the wash water tank is located laterally from the center of the wash water tank 20 from the floor or wall surface of the building. Arranged to rise to the height of the bottom of 20. The water supply pipe 30 is arranged so as to rise from the floor surface or the wall surface of the building to the height of the lower part of the washing water tank 20 even when the wall-mounted flush toilet is adopted. The water supply pipe 30 is arranged on the outer side of the toilet bowl main body 2 and the washing water tank 20. The water supply pipe 30 is formed of a flexible pipe such as a hose. The water supply pipe 30 is connected to a connection portion 48 described later of the water supply device 32.

Next, a specific configuration of the water supply device 32 of the washing water tank device according to the embodiment of the present invention will be described with reference to FIGS. 6, 7, 9 and 10.
The water supply device 32 extends from the water supply port 46 provided inside the wash water tank 20, the connection portion 48 connected to the water supply pipe 30 outside the wash water tank 20, and the water supply port 46 from the connection portion 48. Water is supplied by a water supply flow path 50, an electric flow path opening / closing device 52 that opens and closes the water supply flow path 50 by an electromagnetic valve mechanism provided outside the lid-shaped member 33, and a mechanical mechanism provided inside the washing water tank 20. It is equipped with a mechanical flow path opening / closing device 54 (see FIGS. 6 and 10) for opening / closing the flow path.

Further, the water supply device 32 has a main valve seat 56 provided in the water supply flow path 50 and a water stop state provided in the water supply flow path 50 and seated on the main valve seat 56 to close the secondary side water passage 64. From the diaphragm valve body 58, which is a diaphragm valve that switches between the water supply state that opens the secondary side water passage 64 away from the main valve seat 56, and the water supply source outside the wash water tank 20 in the water supply flow path 50. The primary side water passage 60, which is the first water supply flow path for supplying the wash water, and the water supply flow path 50 are provided on the opposite sides of the diaphragm valve body 58 from the main valve seat 56 side, and the pressure of the internal wash water fluctuates. The inside of the pressure chamber 62, the secondary side water passage 64 which is the second water supply channel for supplying the wash water to the water supply port 46 inside the wash water tank 20 among the water supply flow paths 50, and the inside of the pressure chamber 62. The first pilot flow path 66, which is the first flow path extending from the pressure chamber 62 to the wash water tank 20 so that the pressure can be released to the wash water tank 20, and the internal pressure of the pressure chamber 62 can be released to the wash water tank 20. Is provided with a second pilot flow path 68, which is a second flow path extending from the pressure chamber 62 to the wash water tank 20.

The main valve seat 56 is provided at the inlet end of the secondary side water passage 64. The main valve seat 56 is provided between the primary side water passage 60 and the secondary side water passage 64.
The diaphragm valve body 58 is formed with a bleed hole (not shown) that connects the primary side water passage 60 and the pressure chamber 62. The diaphragm valve body 58 moves in the direction of abutting toward the main valve seat 56 or in the direction away from the main valve seat 56 due to the pressure difference between the internal pressure of the pressure chamber 62 and the water pressure of the primary side water passage 60. is set up. With the bleed hole formed in the diaphragm valve body 58, the primary side water passage 60 and the pressure chamber 62 communicate with each other in a state where the diaphragm valve body 58 is closed, and the water pressure from the primary side water passage 60 enters the pressure chamber 62. Is working.

The pressure chamber 62 moves the diaphragm valve body 58 toward the main valve seat 56 when the internal pressure rises, and moves the diaphragm valve body 58 away from the main valve seat 56 when the internal pressure drops.

The electric flow path switching device 52 is a solenoid valve device that is electrically controlled by the control unit 21. The electric flow path opening / closing device 52 is seated on the first valve seat 66a of the first pilot flow path 66, and has a first valve body 70 formed so as to be able to close the first pilot flow path 66, and a first valve body 70. It is provided with a solenoid valve mechanism 72 that electrically operates the valve body 70. When the float switch 28 does not electrically detect the full water level WL1 of the washing water tank 20, the electric flow path opening / closing device 52 separates the first valve body 70 from the first valve seat 66a and first. When the pilot flow path 66 is opened and the float switch 28 electrically detects the full water level WL1 of the wash water tank 20, the first valve body 70 is pressed against the first valve seat 66a to close the first valve seat 66a. 1 The pilot flow path 66 is closed.

The electric flow path opening / closing device 52 can open / close the diaphragm valve body 58 by opening / closing the first pilot flow path 66 by the first valve body 70, and discharges the washing water into the washing water tank 20. It has a function to switch the water stoppage. Of the electric flow path switchgear 52, at least the solenoid valve mechanism 72 is provided in the air space outside the lid-shaped member 33 so that the electronic components are prevented from being affected by the humid air in the washing water tank 20. Has been done.

The mechanical flow path opening / closing device 54 forms a mechanical so-called ball tap valve device that does not use electricity. The mechanical flow path opening / closing device 54 is seated on the second valve seat 68a of the second pilot flow path 68, and has a second valve body 74 formed so as to be able to close the second pilot flow path 68, and wash water. Float 76 (see FIGS. 6 and 8), which is a mechanical mechanism that moves up and down according to fluctuations in the water level of the wash water in the tank 20, and one of which is connected to the float 76 and the other as a mechanical mechanism. It is provided with a swing member 78, which is a mechanical mechanism connected to the two valve bodies 74 and swings when the float 76 moves up and down to mechanically open and close the second valve body 74. The operation of the float 76 is transmitted to the second valve body 74 as a mechanical operation via the swing member 78.

When the portion of the swing member 78 on the float 76 side moves upward, the portion on the second valve body 74 side moves downward and presses the second valve body 74 against the second valve seat 68a to close the swing member 78. When the portion of the swing member 78 on the float 76 side moves downward, the portion on the second valve body 74 side moves upward so that the second valve body 74 is separated from the second valve seat 68a and opened. It has become. The mechanical flow path opening / closing device 54 can open / close the diaphragm valve body 58 by opening / closing the second pilot flow path 68 by the second valve body 74 connected to the float 76 and the swing member 78, and is used for cleaning. It has a function of switching between spouting water into the washing water tank 20 and stopping water.
Most of the water supply device 32, for example, the primary side water passage 60, the secondary side water passage 64, the pressure chamber 62, the diaphragm valve body 58, which is a basic structure other than the electric flow path opening / closing device 52. The main valve seat 56 and the mechanical flow path opening / closing device 54 are provided inside the washing water tank 20. Therefore, the distance between the water supply flow path 50 extending in the washing water tank 20 and the mechanical flow path opening / closing device 54 can be made relatively short. As a result, the water supply device 32 can be formed in a relatively small size, and it is necessary to provide the washing water tank 20 with a notch for arranging the flow path of the water supply device 32 so as to straddle the wall surface of the washing water tank 20 as in the conventional case. It is possible to form the washing water tank 20 in which most of the water supply device 32 is housed in a relatively small size as in the present embodiment.
The mechanical flow path opening / closing device 54 may be one in which the second valve body 74 is mechanically opened / closed by a lever-type mechanical mechanism using a lever, and the poppet valve mechanism using a cam is used to open and close the second valve body 74. The two-valve body 74 may be mechanically opened and closed. Further, the mechanical flow path opening / closing device 54 may mechanically open / close the first valve body 70 of the electric flow path opening / closing device 52 with a wire or the like.

Next, the mounting structure of the water supply device 32 in the washing water tank device according to the embodiment of the present invention will be described with reference to FIGS. 2 to 5 and 8 to 10.

The lid-shaped member 33 has a first lid-shaped member 80 that is formed so as to partially cover the first opening 24 and forms a second opening 25 that is smaller than the first opening 24, and a second opening 25. It is provided with a second lid-like member 82 to cover. By combining the first lid-shaped member 80 and the second lid-shaped member 82, the mounting portion 73 of the electric flow path opening / closing device 52 is sandwiched between the first lid-shaped member 80 and the second lid-shaped member 82. Such a mounting structure 84 is formed. The attachment portion 73 of the electric flow path opening / closing device 52 is formed so as to extend from the inside to the outside of the lid-shaped member 33. The mounting structure 84 forms an opening having a shape along the outer periphery of the mounting portion 73. The mounting structure 84 forms an opening toward the front side, that is, the front side of the washing water tank device 18. Therefore, the electric flow path opening / closing device 52 is provided on the front side of the washing water tank 20 on the outer side of the first lid-shaped member 80 and the second lid-shaped member 82. Therefore, when the maintenance worker performs the maintenance work, the electric flow path opening / closing device 52 can be approached from the front side of the washing water tank 20, and the workability at the time of maintenance can be improved.

As shown in FIGS. 8 and 10, the washing water tank device 18 further includes a sealing member 86 that seals between the outer periphery of the mounting portion 73 of the electric flow path opening / closing device 52 and the mounting structure 84. .. The seal member 86 can suppress water leakage from the outer periphery of the mounting portion 73 of the electric flow path opening / closing device 52 and the mounting structure 84.

As shown in FIGS. 2 to 4, the first lid-shaped member 80 includes a brim portion 88 forming a substantially flat upper surface. The brim 88 is formed with an opening 90 which is a guiding portion for guiding water. The opening 90 is formed at a position outside the position directly above the first opening 24 of the washing water tank 20. The opening 90 is opened downward so that water can be guided and dropped from the upper surface of the brim 88 to the bottom of the wash water tank 20 through the opening 90 as shown by arrow F1 (see FIG. 2). can. Therefore, even if water leaks from the electric flow path opening / closing device 52 to the outside of the first lid-shaped member 80, even if water gets wet from the brim 88 through the opening 90, there is little effect. It can be guided to a portion, and the influence of water leakage on other electronic devices can be suppressed.
A partition 92 may also be formed in the brim portion 88 as a guide portion for guiding water. The partition 92 can divide the upper surface region on the brim 88 into the lower region 88a of the electric flow path switching device 52 and the region 88b on the float switch 28 side. Therefore, if water leaks from the electric flow path opening / closing device 52 to the region 88a, it is possible to suppress the flow of water to the float switch 28, which is an electronic device, and allow the water to flow downward through the opening 90. can. Therefore, it is possible to suppress the influence of water leakage on other electronic devices.

As shown in FIG. 2, the substrate 35 of the washing water tank device 18 is provided below the washing water tank 20. An electronic device such as a washlet (registered trademark) functional unit (not shown) or a wiring device (not shown) of the washing water tank device 18 can be attached to the substrate 35. The substrate 35 is configured so that the water supply pipe 30 can be guided above the toilet bowl body 2 and below the water supply device 32.
The substrate 35 includes a water receiving portion 94 formed in a U shape on the upper surface thereof and below the downstream end 90a of the opening 90 in the vertical direction. Therefore, the water flowing down from the opening 90 reaches the water receiving portion 94 as shown by the arrow F1. Since the upper surface of the water receiving portion 94 is formed with a U-shaped recess in the central portion, it is possible to prevent the dropped water from scattering to the surroundings due to the impact of the collision with the water receiving portion 94, and the substrate. It is possible to prevent water from adhering to other electronic devices and the like attached to the 35.

Next, the structure of the bottom surface of the washing water tank 20 in the washing water tank device 18 according to the embodiment of the present invention will be described with reference to FIGS. 9 and 10.
The wash water tank 20 is formed with a first bottom surface 20a forming the lowermost surface of the water storage region of the wash water tank 20 and above the first bottom surface 20a and above the connection portion 48 of the water supply device 32. It is provided with a second bottom surface 20b. The first bottom surface 20a is provided at substantially the same height as the drain valve seat 37.

The second bottom surface 20b of the wash water tank 20 is formed below the primary side water passage 60 of the water supply device 32 and above the connection portion 48. The second bottom surface 20b is arranged between the diaphragm valve body 58 and the connecting portion 48. The second bottom surface 20b is formed so as to penetrate the primary side water passage 60. The second bottom surface 20b forms a trapezoidal flat portion higher than the first bottom surface 20a. The second bottom surface 20b of the wash water tank 20 is formed in a lateral region of the wash water tank 20. The side region of the wash water tank 20 is a region on the side side of the central region where the drain port 22 is located, and preferably the wash water tank 20 has a total length of 1 in the left-right direction. It is a lateral region so as to be included in the length of 1/3 from each of the left and right side walls of 20.
The second bottom surface 20b and the first bottom surface 20a form the entire bottom surface of the washing water tank 20.

The second bottom surface 20b is formed below the full water level WL1. Therefore, the region above the second bottom surface 20b and below the full water level WL1 forms the water storage region A1. In this way, the region above the second bottom surface 20b can be used as the water storage region A1. In the horizontal cross section of the wash water tank 20 above the second bottom surface 20b, the cross-sectional area of the water storage area is expanded by the amount of the water storage area A1.

The second bottom surface 20b extends to the side wall 20c of the washing water tank 20. The second bottom surface 20b also has a function of relatively compactly forming a storage space B1 for accommodating the connection portion 48 of the water supply device 32 below the second bottom surface 20b. The accommodation space B1 is formed as a space inside the side wall 20c and outside the inner side wall 20d formed inside the side wall 20c at a height between the second bottom surface 20b and the substrate 35. Since the connection portion 48 of the water supply device 32 needs to be arranged at a height between the second bottom surface 20b and the substrate 35, a storage space B1 having a recessed outer wall of the washing water tank 20 is formed. ing. Since the second bottom surface 20b extends to the side wall 20c, the accommodation space B1 can be formed relatively compactly, and the accommodation space B1 is opened laterally from the side of the washing water tank device 18. The connection work and maintenance work of the connection portion can be performed, and the workability of the connection portion 48 can be improved.

As shown in FIG. 4, the second bottom surface 20b extends to the vertical wall 20e on the front side of the washing water tank 20 so as to form a substantially flat flat surface. Therefore, it is possible to visually recognize the connection portion 48 of the water supply device 32 and access the connection portion 48 from the diagonal direction on the front side of the washing water tank 20. Therefore, it is possible to perform connection work and maintenance work of the connection portion 48 from the front side of the washing water tank device 18 to the connection portion 48 of the water supply device 32 arranged below the second bottom surface 20b, and the connection portion 48 can be performed. Workability can be further improved.

Next, the effect of the washing water tank device 18 according to the above-described embodiment of the present invention will be described.
According to the washing water tank device 18 according to the embodiment of the present invention described above, in the washing water tank device 18 capable of storing washing water in the event of a power failure, the water supply device 32 is provided on the outside of the lid-shaped member 33. When the electric flow path opening / closing device 52 for opening / closing the water supply flow path 50 and the mechanical flow path opening / closing device 54 for opening / closing the water supply flow path 50 by a mechanical mechanism provided inside the washing water tank 20 are provided. The wash water tank 20 includes a first bottom surface 20a and a second bottom surface 20b formed above the first bottom surface 20a and above the connection portion 48 of the water supply device 32. In the washing water tank device 18 having such a structure, washing water can be stored in a region above the second bottom surface 20b. According to the present invention, the washing water can be stored in the area formed as a relatively large notch area to the lower part of the water supply device 132 in the conventional washing water tank 120 and cannot be used as the water storage area, and the washing water tank can be used. The full water level WL1 of 20 can be lowered. Therefore, in the washing water tank device 18 capable of storing washing water in the event of a power failure, the washing water tank 20 can be made into a low silhouette.
Further, for example, in the washing water tank device 18 capable of storing washing water in the event of a power failure, the washing water in the washing water tank 20 is provided by providing the electromagnetic valve mechanism 72 of the electric flow path opening / closing device 52 on the outside of the lid-shaped member 33. It is possible to suppress the adverse effect of the steam generated from the electromagnetic valve mechanism 72 on the electromagnetic valve mechanism 72. Further, most of the water supply device 32, for example, a water supply flow path 50 having a basic structure other than the electric flow path opening / closing device 52 and a mechanical flow path opening / closing device 54 are provided inside the washing water tank 20. Therefore, the distance between the water supply flow path 50 extending in the washing water tank 20 and the mechanical flow path opening / closing device 54 can be made relatively short, and the water supply device 32 can be formed in a relatively small size, as in the conventional case. It is no longer necessary to provide the washing water tank 20 with a notch for arranging the flow path of the water supply device 32 so as to straddle the wall surface of the washing water tank 20, and the washing that accommodates most of the water supply device 32 inside as in the present embodiment. The water tank 20 can be formed in a relatively small size. Therefore, in the washing water tank device 18 capable of storing washing water in the event of a power failure, the washing water tank 20 can be made into a low silhouette.

Further, according to the washing water tank device 18 according to the embodiment, since the second bottom surface 20b of the washing water tank 20 is formed in the lateral region of the washing water tank 20, it is closer to the center of the washing water tank 20. It is possible to suppress the distance extending the water supply pipe 30 arranged on the side side to the connecting portion 48 below the second bottom surface 20b in the lateral direction. Therefore, in order to secure a space in which the water supply pipe 30 can be arranged, the size of the region cut out toward the inside of the washing water tank 20 can be suppressed. Therefore, it is possible to suppress a decrease in the capacity of the washing water tank 20, and the washing water tank 20 can be made into a lower silhouette.

Further, according to the washing water tank device 18 according to the embodiment, a storage space for accommodating the connection portion 48 of the water supply device 32 can be formed relatively compactly below the second bottom surface 20b, and the washing water can be formed. The connection work and maintenance work of the connection portion 48 can be performed from the side of the tank 20, and the workability for the connection portion 48 can be improved.

Further, according to the washing water tank device 18 according to the embodiment, the connection work of the connecting portion 48 from the front side of the washing water tank 20 to the connecting portion 48 of the water supply device 32 arranged below the second bottom surface 20b. And maintenance work can be performed, and workability for the connection portion 48 can be further improved.

Further, according to the washing water tank device 18 according to the embodiment, the first lid-shaped member 80 and the second lid-shaped member 82 are provided by combining the first lid-shaped member 80 and the second lid-shaped member 82. It can be mounted so as to sandwich the mounting portion 73 of the electric flow path opening / closing device 52 between them. Therefore, the adverse effect of steam on the electric flow path opening / closing device 52 can be suppressed, the washing water tank 20 can be made into a low silhouette, and the electric flow path opening / closing device 52 is provided on the outside of the lid-shaped member 33. It is possible to improve the assemblability of the.

Further, according to the washing water tank device 18 according to the embodiment, when the electric flow path opening / closing device 52 is provided on the outer side of the lid-shaped member 33, the seal member 86 is the electric flow path opening / closing device 52. It is possible to suppress water leakage from the outer periphery of the mounting portion 73 and the mounting structure 84 formed by the first lid-shaped member 80 and the second lid-shaped member 82.

Further, according to the washing water tank device 18 according to the embodiment, the first lid-shaped member 80 includes a brim portion 88, and the brim portion 88 is formed with an opening 90 for guiding water. Even if water leaks from the electric flow path opening / closing device 52 to the outside of the first lid-shaped member 80, water is guided from the brim portion 88 to the portion where the influence is small even if it gets wet with water through the opening 90. It is possible to suppress the influence of water leakage on other electronic devices.

Further, according to the washing water tank device 18 according to the embodiment, the substrate 35 includes a water receiving portion 94 formed in a U shape on the upper surface thereof and below the downstream end 90a of the opening 90. Therefore, it is possible to prevent the water that has fallen from the opening 90 from scattering to the surroundings due to the impact of the collision with the water receiving portion 94, and to prevent the water from adhering to the electronic device or the like attached to the substrate 35. Can be done.

Further, according to the washing water tank device 18 according to the embodiment, since the electric flow path opening / closing device 52 is provided on the front side of the washing water tank 20, the washing water is washed when the maintenance worker performs the maintenance work. The electric flow path opening / closing device 52 can be approached from the front side of the tank 20, and workability during maintenance can be improved.

Further, according to the flush toilet 1 provided with the wash water tank device 18 according to the embodiment, the flush toilet 1 including the wash water tank 20 can be made into a low silhouette.

1 Water-washing toilet 2 Toilet body 4 Bowl 6 Headrace 8 Drainage trap pipeline 8a Inlet 8b Ascending path 8c Down-passing 10 Rim 12 1st spout 14 Reservoir 16 2nd spout 18 Washing water tank device 19 Exterior cover 20 Washing water tank 20a First bottom surface 20b Second bottom surface 20c Side wall 20d Inner side wall 20e Vertical wall 21 Control unit 22 Drainage port 24 First opening 25 Second opening 26 Drainage valve device 28 Float switch 30 Water supply pipe 32 Water supply device 33 Lid-shaped member 34 Overflow pipe 35 Board 36 Drain valve 37 Drain valve seat 38 Rotating device 40 Guide member 42 Rotating shaft 44 Ball chain 46 Water supply port 48 Connection part 50 Water supply flow path 52 Electric flow path opening / closing device 54 Mechanical flow path opening / closing device 56 Main valve seat 58 Diaphragm valve body 60 Primary side water passage 62 Pressure chamber 64 Secondary side water passage 66 First pilot flow path 66a First valve seat 68 Second pilot flow path 68a Second valve seat 70 1st valve body 72 Electromagnetic valve mechanism 73 Mounting part 74 2nd valve body 76 Float 78 Swing member 80 1st lid-like member 82 2nd lid-like member 84 Mounting structure 86 Seal member 88 Brim part 88a Region 88b Region 90 Opening Part 90a Downstream end 94 Water receiving part A1 Water storage area B1 Storage space F1 Arrow W ₀ Storage surface WL1 Full water level

Claims (10)

A wash water tank device that can store wash water in the event of a power outage.
A wash water tank that stores wash water to be supplied to the toilet bowl and has a first opening at the top.
A water supply pipe that supplies wash water from an external water supply source of the wash water tank to the wash water tank, and
A water supply device that supplies wash water into the wash water tank,
It has a lid-like member that covers the first opening, and has a lid-like member.
The above water supply device
The water supply port provided inside the washing water tank and
A connection portion connected to the water supply pipe outside the washing water tank,
A water supply flow path extending from the connection portion to the water supply port portion,
An electric flow path opening / closing device that opens / closes the water supply flow path by a solenoid valve mechanism provided on the outside of the lid-shaped member.
A mechanical flow path opening / closing device for opening / closing the water supply flow path by a mechanical mechanism provided inside the washing water tank is provided.
The electric flow path opening / closing device is arranged above the first opening.
The washing water tank includes a first bottom surface and a second bottom surface formed above the first bottom surface and above the connection portion of the water supply device and below the full water level . A wash water tank device characterized by that. The washing water tank device according to claim 1, wherein the second bottom surface of the washing water tank is formed in a lateral region of the washing water tank. The washing water tank device according to claim 1, wherein the second bottom surface of the washing water tank extends to the side wall of the washing water tank. The washing water tank device according to claim 1, wherein the second bottom surface of the washing water tank extends to a vertical wall on the front side of the washing water tank. The lid-shaped member is
A first lid-like member formed so as to partially cover the first opening and forming a second opening smaller than the first opening.
A second lid-like member that covers the second opening is provided.
By combining the first lid-shaped member and the second lid-shaped member, the mounting portion of the electric flow path opening / closing device is sandwiched between the first lid-shaped member and the second lid-shaped member. The washing water tank device according to any one of claims 1 to 4, wherein the mounting structure is formed. The washing water tank device according to claim 5, further comprising a sealing member for sealing between the outer periphery of the mounting portion of the electric flow path opening / closing device and the mounting structure. The washing water tank device according to claim 6, wherein the first lid-shaped member of the lid-shaped member is provided with a brim portion, and a guiding portion for guiding water is formed in the brim portion. Further, a substrate provided below the washing water tank and supporting the washing water tank is provided.
The washing water tank device according to claim 7, wherein the substrate includes a water receiving portion formed in a U shape on the upper surface thereof and below the guiding portion. The washing water tank device according to any one of claims 1 to 8, wherein the electric flow path opening / closing device is provided on the front side of the washing water tank. A flush toilet equipped with the flush water tank device according to any one of claims 1 to 9.

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