JP2022026931A - Flushing water tank device and flushing toilet bowl equipped with the same - Google Patents

Abstract

To provide a flushing water tank device and a flushing toilet bowl equipped with the same, which can facilitate adjustment of the height position of a float body of a water supply valve device and suppress the effect on the buoyancy of the float body, while realizing downsizing of the entire water storage tank body.SOLUTION: A flushing water tank device 1 of the present invention has a water storage tank body 22 and a water supply valve device 28. The water supply valve device comprises a lever arm 66, a float body 32a that moves up and down by buoyancy according to the water level in the water storage tank body, a float shaft 32b that extends upward from the float body and is connected to the lever arm, and a float height adjustment mechanism M1. Provided at the connection between the lever arm and the float shaft, the float height adjustment mechanism allows both the float body and the float shaft to move up and down against the lever arm without circumferential rotation in a state in which the lever arm and the float shaft are connected.SELECTED DRAWING: Figure 6

Description

The present invention relates to a washing water tank device and a flush toilet equipped with the washing water tank device, and more particularly to a washing water tank device for supplying washing water to the toilet body of the flush toilet and a flush toilet equipped with the washing water tank device. ..

Conventionally, for example, as described in Patent Document 1-4, as a washing water tank device for supplying washing water for washing the toilet body, a water storage tank body capable of storing the washing water for washing the toilet body is used. , A water supply valve device that enables water supply and stoppage of washing water supplied from a water supply source such as water supply to the inside of a water storage tank body is known.
In these conventional wash water tank devices, the water supply valve device has a water supply valve that opens and closes a water supply channel to which wash water is supplied from a water supply source, a lever arm that is operably connected to the water supply valve, and this lever. It includes a float shaft provided on the tip end side of the arm, and a float body provided on the float shaft that moves up and down according to fluctuations in the water level in the water storage tank body.
First, in the water supply valve device of the conventional washing water tank device described in Patent Document 1, the float shaft is fixed to the tip end portion of the lever arm. Further, a plurality of engaging protrusions are provided on the outer peripheral surface of the float shaft, and a protrusion for forming a mounting hole into which the float shaft is inserted is provided at the upper end of the float body. On the inner peripheral surface of the mounting hole of the protruding portion, a fitting recess that engages with the engaging protrusion of the float shaft so as to be disengaged is provided. As a result, with the float shaft inserted into the mounting hole in the protrusion at the upper end of the float body, one of the plurality of engaging protrusions of the float shaft is selected and engaged with the fitting recess of the float body. Then, the height position of the float body with respect to the lever arm and the float shaft can be adjusted.
Next, in the water supply valve device of the conventional washing water tank device described in Patent Document 2, the float shaft is fixed to the tip of the lever arm, and the upper surface of the float body is used for height adjustment. A holding portion that rotatably holds the dial is provided integrally. As a result, when the height adjustment dial is rotated independently of the float body, the float body can move in the axial direction with respect to the float axis, and the height position of only the float body can be adjusted. There is.
Further, in the water supply valve device of the conventional washing water tank device described in Patent Document 3, the float shaft is integrally formed so as to extend upward from the float body, and the float shaft is integrally formed with respect to the tip of the lever arm. Detachably connected. This float shaft is provided with a plurality of connecting portions that can change the connecting position with the lever arm in multiple stages in the vertical direction. After the connecting portion of the float shaft is once disconnected from the lever arm, the float is floated. By selecting one of the plurality of connecting portions of the shaft and connecting it to the lever arm again, the height positions of both the float shaft and the float body can be adjusted.
Further, in the water supply valve device of the conventional washing water tank device described in Patent Document 4, the float shaft is integrally formed so as to extend upward from the float body, and the tip of the lever arm is integrally formed with the float shaft. It is screwed into the male screw on the outer peripheral surface of the. As a result, when both the float body and the float shaft are rotated around the axial center axis of the float shaft, the height positions of both the float shaft and the float body can be adjusted.

Japanese Patent No. 5392721 (Japanese Unexamined Patent Publication No. 2011-149179) Japanese Patent No. 5643954 (Japanese Unexamined Patent Publication No. 2012-177260) Japanese Patent No. 6529308 (Japanese Unexamined Patent Publication No. 2016-188543) Japanese Unexamined Patent Publication No. 2010-71055

In recent years, along with water saving and miniaturization of flush toilets, miniaturization of the water storage tank body has also progressed. For this reason, the volume inside the water storage tank body also decreases, so it is required to reduce the size of the internal equipment and parts inside the water storage tank body. It is a requested issue.
Furthermore, in the installed state of the flush toilet, the conditions such as the direct pressure (water supply pressure) of the water supply differ depending on the installation location, so the height of the float is also adjusted for the water supply valve device of the flush water tank device. By doing so, it is necessary to adjust the amount of washing water in the main body of the water storage tank.
However, in the conventional washing water tank device described in Patent Documents 1 and 2 described above, when the height position of the float body with respect to the float shaft is adjusted, the float shaft moves up and down inside the float body. Since it is in a pierced state, the larger the proportion of the float shaft that occupies the inside of the float body, the greater the influence on the buoyancy acting on the inside of the float body.
Further, in the conventional washing water tank device described in Patent Documents 1, 3 and 4 described above, when adjusting the height position of the float body, the float shaft and the float body are accessed from above the water storage tank body. In the conventional washing water tank device described in Patent Document 2 described above, when adjusting the height position of the float body, the dial for height adjustment is used from above the water storage tank body. Access is required, but the smaller the size of the water storage tank body, the more difficult it is to access the float body and its surroundings, and the more difficult it is to adjust the height position of the float body.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art and the requested problems, and the height of the float body of the water supply valve device while realizing the miniaturization of the entire water storage tank body. It is an object of the present invention to provide a washing water tank device capable of facilitating the position adjustment work and suppressing the influence on the buoyancy of the float body, and a washing toilet bowl equipped with the washing water tank device.

In order to solve the above-mentioned problems, the present invention is a washing water tank device for supplying washing water to the toilet body of a washing toilet, and a water storage tank main body capable of storing the washing water for washing the toilet body. The water supply valve device has a water supply valve device capable of supplying and stopping the wash water supplied from the water supply source into the water storage tank main body, and the water supply valve device has a water supply channel to which the wash water is supplied from the water supply source. For the water supply valve that opens and closes this water supply channel, the lever arm that is connected to this water supply valve and can swing, the float body that moves up and down by buoyancy according to the water level in the water storage tank body, and this float body. It is provided with a float shaft that is fixed and extends upward from the float body and is connected to the lever arm, and a float height adjusting mechanism that makes it possible to adjust the height positions of both the float body and the float shaft. The float height adjusting mechanism is provided at a connection portion between the lever arm and the float shaft, and both the float body and the float shaft are connected to the lever arm and the float shaft. It is characterized in that it can be moved in the vertical direction with respect to the lever arm without rotating in the circumferential direction.
In the present invention configured as described above, in a state where the float shaft fixed to the float main body of the water supply valve device and extending upward from the float main body is connected to the lever arm, the float main body is provided by the float height adjusting mechanism. And both of the float shafts can be moved up and down with respect to the lever arm without rotating in the circumferential direction.
In addition, when adjusting the height position of the float body by the float height adjustment mechanism, the float height adjustment mechanism is provided at the connection portion between the lever arm and the float shaft, so that the entire water storage tank body can be made smaller. Even if the water storage tank is used, the float height adjustment mechanism can be easily accessed from above the water storage tank body, so that the height positions of both the float body and the float shaft can be easily adjusted.
At this time, since the float shaft extends upward from the float body, it is possible to suppress the influence of the float shaft on the buoyancy acting on the inside of the float body.
As a result, it is possible to facilitate the adjustment work of the height positions of both the float body and the float shaft of the water supply valve device while realizing the miniaturization of the entire water storage tank body, and the influence on the buoyancy of the float body. Can be suppressed.

In the present invention, preferably, the float shaft has a male screw formed on the outer peripheral surface thereof, and the float height adjusting mechanism is provided at a connection portion between the lever arm and the float shaft to provide the float shaft. A generally tubular or annular rotation operating member that can be screwed into a male screw, and a float that regulates the rotation of the float shaft around the axis when the rotation operation member is rotated about the axis with respect to the float axis. A shaft rotation restricting unit is provided, and the float shaft rotation restricting unit is provided at a connection portion between the rotation operation member and the lever arm, and is provided at a connection portion between the lever arm and the float shaft. The float shaft rotation regulating unit is provided, and when the rotation operation member is rotated, the rotation operation member is made rotatable with respect to the lever arm around the axis of the float shaft, while the float main body is provided. And the float shaft can be moved in the vertical direction with respect to the rotation operation member and the lever arm without rotating both in the circumferential direction.
In the present invention configured as described above, when adjusting the height position of the float body of the water supply valve device, the rotation operating member of the float height adjusting mechanism is rotated around the float axis. ..
At this time, while the vertical height positions of the lever arm and the rotation operation member are maintained, the entire float shaft is axially rotated with respect to the rotation operation member due to the screwing action between the rotation operation member and the male screw of the float shaft. You can move.
On the other hand, the float shaft rotation restricting portion of the float height adjusting mechanism puts the connection portion between the lever arm and the male screw of the float shaft in a non-screwed state, so that the rotation of the float shaft itself is restricted.
Therefore, the rotation operation member of the float height adjustment mechanism can be rotated around the axis of the float shaft with respect to the lever arm, while both the float body and the float shaft are not rotated in the circumferential direction. It can be moved in the vertical direction with respect to the rotation operation member and the lever arm.
Therefore, the height position in the vertical direction can be easily adjusted without rotating the float main body in the circumferential direction by a simple operation of rotating the rotation operation member of the float height adjusting mechanism.

In the present invention, preferably, the lever arm is provided on the tip end side thereof and has a connection hole through which the float shaft can be inserted in the vertical direction.
The rotation operation member includes a rotation operation main body portion having a female screw screwable to the male screw of the float shaft formed on the inner circumference, and the rotation operation main body portion extending downward in the axial direction from the lower end of the rotation operation main body portion, and the lower end thereof is the lever. It is provided with an engaging portion that rotatably engages with the connection hole of the arm around the axis, and the rotation operation main body portion and the engaging portion are used as the float shaft rotation restricting portion.
The lever arm has a engaged portion in which the engaging portion of the rotation operating member is engaged on the inner peripheral wall surface forming the connection hole, and an engaged portion that protrudes inward on the inner peripheral wall surface and is larger than the engaged portion. It is provided with a fitting convex portion formed so as to extend downward, and the engaged portion and the fitting convex portion are used as the float shaft rotation restricting portion.
The float shaft is formed so as to extend in the axial direction on the outer peripheral surface thereof, and a fitting recess that is slidably fitted to the fitting convex portion of the lever arm in the axial direction is used as the float shaft rotation restricting portion. I have.
In the present invention configured as described above, when the rotation operation member of the float height adjusting mechanism is rotated, the rotation operation main body of the rotation operation member rotates about an axis, so that the female screw of the rotation operation main body is rotated. The entire float shaft can be moved in the axial direction by the screwing action between the float shaft and the male screw of the float shaft.
At this time, the engagement portion of the rotation operation member and the engaged portion of the lever arm are engaged by the float shaft rotation regulation portion of the height adjusting mechanism provided at the connection portion between the rotation operation member and the lever arm. While the rotation operation main body portion and the engagement portion of the rotation operation member can rotate around the axis with respect to the connection hole of the lever arm, the rotation around the axis of the float shaft itself is restricted.
As a result, while the vertical height position of the lever arm and the rotation operation member is maintained, the entire float shaft is rotated by the screwing action of the female screw of the rotation operation main body of the rotation operation member and the male screw of the float shaft. When the member is rotated around the axis, it can be moved in the axial direction with respect to the rotation-operated member.
Further, when the rotation operation member of the float height adjustment mechanism is rotated, the float shaft rotation control portion of the float height adjustment mechanism provided at the connection portion between the lever arm and the float shaft allows the connection hole of the lever arm. The fitting convex portion of the float shaft and the fitting concave portion of the float shaft are fitted. As a result, the rotation of the float shaft around the axis with respect to the connection hole of the lever arm is restricted, and the fitting recess of the float shaft can move in the axial direction along the fitting convex portion of the connection hole of the lever arm. ..
Therefore, the height positions of both the rotation operation member and the lever arm are maintained at a constant height by a simple operation of rotating the rotation operation main body of the rotation operation member of the float height adjustment mechanism. Both the float body and the float shaft can be easily adjusted in height by moving them in the vertical direction without rotating them in the circumferential direction.

In the present invention, preferably, the rotation operating member of the float height adjusting mechanism is provided on the upper portion of the lever arm on the tip end side.
In the present invention configured as described above, even if the entire water storage tank body is miniaturized, the float height adjustment mechanism can be easily accessed from above the water storage tank body, so that the height position of the float shaft can be adjusted. If it becomes easier.
Therefore, the adjustment work of the height positions of both the float body and the float shaft becomes easy.

In the present invention, preferably, the float body has a rectangular shape in a plan view.
In the present invention configured as described above, when the entire water storage tank body is miniaturized, for example, it is required to reduce the size of the water storage tank body in the front-rear depth direction rather than the left-right width direction. Further, by making the shape of the float body in a plan view rectangular, it is possible to suppress the dimensions of the float body in the front-rear depth direction as compared with the shape of the float body in a plan view of a circular shape.
Therefore, it is possible to suppress the dimensions in the front-rear depth direction of the entire water supply valve device and the entire water storage tank body.
In addition, the buoyancy acting on the float body can be sufficiently secured.

In the present invention, preferably, the float body includes a first central axis and a second central axis that bisect the opposite sides of a rectangular shape in a plan view, and these first central axes and the first central axis and the second central axis are respectively provided. The second central axis is inclined with respect to the longitudinal central axis of the lever arm in a state where the lever arm and the float axis are connected in a plan view.
In the present invention configured as described above, the first central axis and the second central axis that bisect the sides of the rectangular shape facing each other in the plan view of the float body are the lever arm and the float axis in the plan view, respectively. Since the float body is tilted with respect to the central axis in the longitudinal direction of the lever arm in the state of being connected to the lever arm, the float body can be arranged in a tilted posture in a plane with respect to the lever arm.
Therefore, in a plan view, the lever arm is compared with the case where one of the first center axis or the second center axis of the float body is aligned with the center axis in the longitudinal direction of the lever arm and the float body is juxtaposed with respect to the lever arm. It is possible to secure a large maximum distance from the base end of the float to the distal end of the float body.
As a result, it is possible to secure the torque for swinging the lever arm by moving the float body and the float shaft up and down, so that the buoyancy required for the float body can be reduced.
Therefore, the float main body itself can be miniaturized, and the entire water supply valve device can be miniaturized, so that the entire water storage tank main body can be miniaturized.

In the present invention, preferably, the float body has a rectangular shape in a plan view, and each of the first central axis and the second central axis is bisected with a short side and a long side of the rectangular shape. Each of the longitudinal center axis and the lateral center axis to be divided.
The float axis is provided on the longitudinal center axis of the float body in a plan view, and is arranged distal to the water supply valve from the center of the rectangular shape in the plan view of the float body. Has been done.
In the present invention configured as described above, the float axis of the water supply valve device is provided on the longitudinal center axis of the float body in a plan view, and is provided as a water supply valve rather than the center of the rectangular shape in the plan view of the float body. By arranging it on the distal side, the float axis can be arranged eccentrically on the distal side of the water supply valve with respect to the center of the float body in a plan view.
As a result, a part of the float body can be arranged even in the dead space formed between the float shaft in the water storage tank body and the water supply valve on the proximal side thereof, so that the float body can be moved up and down. The required space and surrounding space can be reduced, and the entire water supply valve device can be effectively miniaturized.

Next, the present invention is a flush toilet equipped with the wash water tank device.
In the present invention configured in this way, it is possible to easily adjust the height position of the float body of the water supply valve device while realizing the miniaturization of the entire water storage tank body, and the buoyancy of the float body. It is possible to provide a flush toilet equipped with a flush water tank device capable of suppressing the effect.

According to the washing water tank device of the present invention and the washing toilet bowl provided with the washing water tank device, it is possible to easily adjust the height position of the float body of the water supply valve device while realizing the miniaturization of the entire water storage tank body. At the same time, the influence on the buoyancy of the float body can be suppressed.

It is a top view which shows the flush toilet equipped with the flush water tank apparatus according to 1st Embodiment of this invention. FIG. 3 is a cross-sectional view taken along the line II-II of FIG. It is a block diagram which shows the basic structure of the washing water tank apparatus by 1st Embodiment of this invention. The schematic front sectional view of the water storage tank main body and the small tank which shows the basic structure of the washing water tank apparatus by 1st Embodiment of this invention. It is a top view which shows the internal structure of the water storage tank main body of the washing water tank apparatus by 1st Embodiment of this invention. It is a perspective view of the water supply valve device of the washing water tank device according to 1st Embodiment of this invention as seen from the front right diagonally above. It is a top view of the water supply valve device of the washing water tank device according to 1st Embodiment of this invention. It is sectional drawing as seen along the line VIIIA-VIIIA of FIG. 7 of the water supply valve device of the washing water tank device according to the first embodiment of the present invention, and shows the closed state of the main valve and the float side pilot valve of the water supply valve device. show. It is a cross-sectional view similar to FIG. 8A of the water supply valve device of the washing water tank device according to the first embodiment of the present invention, and shows the valve open state of the main valve and the float side pilot valve of the water supply valve device. It is a perspective view which looked at the float height adjustment mechanism in the water supply valve device of the washing water tank device by 1st Embodiment of this invention from diagonally below. It is a perspective view of the float (float main body and float shaft) in the water supply valve device of the washing water tank device according to the first embodiment of the present invention seen from diagonally above. It is a perspective view which looked at the rotation operation member of the float height adjustment mechanism in the water supply valve device of the washing water tank device by 1st Embodiment of this invention from diagonally below. FIG. 3 is a perspective sectional view of a rotation operating member of a float height adjusting mechanism in a water supply valve device of a washing water tank device according to the first embodiment of the present invention as viewed from diagonally below. It is a vertical sectional view of the float height adjustment mechanism in the water supply valve device of the washing water tank device according to 1st Embodiment of this invention. It is a vertical sectional view of the float height adjusting device in the water supply valve device of the washing water tank device according to 1st Embodiment of this invention, and shows the state which the float is adjusted to the 1st height position (low position). It is a vertical sectional view of the float height adjustment device in the water supply valve device of the washing water tank device according to 1st Embodiment of this invention, and the float is adjusted to the 2nd height position (high position) higher than the 1st height position. Indicates the state of being done. It is a front view of the float height adjusting device in the water supply valve device of the washing water tank device according to the 2nd Embodiment of this invention. It is a top view of the float height adjusting device in the water supply valve device of the washing water tank device according to the 2nd Embodiment of this invention.

Hereinafter, a flush toilet equipped with a flush water tank device according to the first embodiment of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIGS. 1 and 2, the basic structure of a flush toilet equipped with a flush water tank device according to the first embodiment of the present invention will be described.
FIG. 1 is a plan view showing a flush toilet equipped with a flush water tank device according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II of FIG.

First, as shown in FIGS. 1 and 2, the flush toilet 2 provided with the wash water tank device 1 according to the first embodiment of the present invention includes the toilet body 4. The washing water tank device 1 of the present embodiment, which will be described in detail later, is arranged on the upper surface of the toilet bowl body 4 on the rear side.
Next, as shown in FIGS. 1 and 2, the toilet bowl main body 4 has a bowl portion 6 provided on the front side thereof, a rim portion 8 formed on the upper edge of the bowl portion 6, and the rim portion 8. It is provided with a shelf portion 10 formed on the inner circumference.
Further, an inlet 12a of the trap drainage channel 12 is opened at the bottom of the bowl portion 6 of the toilet bowl body 4, and the trap drainage channel 12 includes an ascending pipe 12b extending upward and a descending pipe 12c extending downward. .. As can be seen from the shape of the trap drainage channel 12, the flush toilet bowl 2 according to the present embodiment is a wash-off type toilet bowl that discharges filth by a drop in the height direction.
In this embodiment, a form applied to the wash-off type toilet bowl will be described, but the present invention is not limited to such a form, and the filth in the bowl portion is sucked in by using the siphon action to the outside at once from the drain trap pipeline. It is also applicable to other forms of flush toilets, such as the form of a so-called siphon type toilet that discharges.

Next, the toilet body 4 has a headrace 16 into which the wash water discharged from the drain port 14 of the wash water tank device 1 flows in, and a first rim spout port formed in the center on the left side when viewed from the front of the shelf portion 10. It is provided with 18 and a second rim spout 20 formed on the right rear side when viewed from the front.
Further, the headrace 16 branches downstream into the first headrace 16a and the second headrace 16b, and the washing water of the headrace 16 reaches the first rim spout 18 via the first headrace 16a. , The second rim spout 20 is reached through the second headrace 16b, and the washing water is spouted from the first rim spout 18 and the second rim spout 20, respectively, to wash the bowl portion 6 and clean the filth. It is designed to be discharged from the trap drainage channel 12.

Next, the details of the washing water tank device 1 of the present embodiment will be described with reference to FIGS. 1 to 13B.
First, FIG. 3 is a block diagram showing a basic configuration of a washing water tank device according to the first embodiment of the present invention. Further, FIG. 4 is a schematic front sectional view of a water storage tank main body and a small tank showing the basic configuration of the washing water tank device according to the first embodiment of the present invention. Further, FIG. 5 is a plan view showing the internal structure of the water storage tank main body of the washing water tank device according to the first embodiment of the present invention.
In the washing water tank device 1 shown in FIG. 3, for convenience, the entire internal structure of the water storage tank body 22 is schematically simplified, so that the structure of the washing water tank device 1 shown in FIGS. 4 and 5 is shown. It is different from the arrangement of.
Further, in the washing water tank device 1 shown in FIG. 4, a part of the structure is simplified.
Further, regarding the left-right direction of the washing water tank device 1 shown in FIGS. 1 to 8B, the left side in the left-right direction when viewed from the front side (user side) of the toilet bowl main body 4 of the flush toilet bowl 2 is the "left side", and the toilet bowl main body. The right side in the left-right direction when viewed from the front side of 4 is defined as the "right side".

First, as shown in FIGS. 3 to 5, the washing water tank device 1 includes a ceramic exterior tank T, a water storage tank main body 22 which is an interior tank housed in the exterior tank T, and water supply and the like. It includes a water supply pipe 24 connected to a water source (not shown).
In the water storage tank main body 22, a part of the washing water supplied through the water supply pipe 24 is stored and can be supplied to the headrace 16 of the toilet bowl main body 4.
Further, as shown in FIG. 4, the water storage tank main body 22 is arranged at a relatively low position on the rear side of the toilet bowl main body 4, and the upper end height position of the water storage tank main body 22 is low, that is, a so-called low silhouette type tank. As shown in FIG. 5, it is formed in a flat shape that is long in the left-right direction in a plan view.

Next, as shown in FIGS. 3 to 5, a water supply valve device 28 for supplying and stopping the washing water supplied from the water supply pipe 24 via the constant flow rate valve 26 is provided inside the water storage tank main body 22. ing.
The water supply valve device 28 includes a main valve 30 and the like, which are water supply valves that open and close the water supply passage on the downstream side of the constant flow rate valve 26.
Further, the washing water tank device 1 includes an operating device 32 (operating lever 32a, drive rotating shaft 32b) which is an operating unit for operating the operation of the water supply valve device 28 when starting the washing of the toilet bowl.

Next, the details of the internal structure and the operating mechanism of the water supply valve device 28 will be described with reference to FIGS. 3 to 5.
First, the water supply valve device 28 further includes a poppet valve 34, a float 36, a float side pilot valve 38, and a float height adjusting mechanism M1.
The poppet valve 34 is an operation-side pilot valve that opens and closes the main valve 30 by rotating the operating lever 32a and the drive rotation shaft 32b of the operating device 32. Further, the float 36 moves up and down by buoyancy according to the water level WL in the water storage tank main body 22. Further, the float side pilot valve 38 opens and closes the main valve 30 by moving the float 36 up and down.
Further, the float height adjusting mechanism M1 is a mechanism for adjusting the height position of the float 36 in the vertical direction, although the details will be described later.

Next, as the main structure of the main valve 30 part of the water supply valve device 28, the main valve body 30a which is a pilot type diaphragm valve, the main valve seat 30b on which the main valve body 30a is seated, and the main valve seat 30b to which the main valve body 30a is seated are mainly operated by internal pressure. It is provided with a pressure chamber 30c for moving the valve body 30a with respect to the main valve seat 30b.
As a result, the water supply valve device 28 is either in a water stop state in which the main valve body 30a is seated on the main valve seat 30b to stop water, or in a water supply state in which the main valve body 30a is separated from the main valve seat 30b to supply water. It is possible to switch to that state.
Further, the pressure chamber 30c is provided with a poppet hole 34a and a float side pilot hole 38a for releasing the pressure of the pressure chamber 30c, respectively.
Further, a poppet valve 34 is provided in the poppet hole 34a of the pressure chamber 30c so as to be openable and closable. The poppet valve 34 is connected to a drive rotation shaft 32b that connects the operation lever 32a and the water supply valve device 28. The drive rotary shaft 32b can rotate around the shaft in conjunction with the manual operation of the operation lever 32a by the user, and is a part of the operation unit for operating the operation of the water supply valve device 28. ..
Further, a float-side pilot valve 38 is provided in the float-side pilot hole 38a of the pressure chamber 30c. The float-side pilot valve 38 can be opened and closed by moving the float 36 up and down according to the water level WL of the washing water in the water storage tank main body 22.

Further, the main valve body 30a is provided with a bleed hole (not shown), and when the water is stopped, the primary side flow path A of the water supply pipe 24 and the pressure chamber 30c are provided with the bleed hole (not shown). It communicates with the inside.
Here, the opening area of the poppet hole 34a is formed to be larger than the opening area of the float side pilot hole 38a. Further, the poppet hole 34a is formed at a position above the float side pilot hole 38a as shown in FIG.

Further, as shown in FIG. 4, the water supply valve device 28 is normally in a water stop state, and in the water stop state, both the poppet hole 34a and the float side pilot hole 38a are closed, and the water supply pipe 24 is closed. The primary side flow path A communicates with the pressure chamber 30c through a bleed hole (not shown).
Therefore, the water pressure of the primary side flow path A of the water supply pipe 24 and the water pressure of the pressure chamber 30c are the same water pressure (primary side flow path pressure α), and the secondary side flow path B of the water supply pipe 24 is open to the atmosphere, and the main valve. Since the area where the water pressure acts on the body 30a is larger than the area of the primary side flow path A, the main valve body 30a is pressed against the main valve seat 30b and is in a closed state.

Next, in the water supply valve device 28, when the poppet hole 34a is opened by the poppet valve 34 and / or the float side pilot hole 38a is opened by the float side pilot valve 38, the washing water is discharged from the pressure chamber 30c. It flows out and the pressure in the pressure chamber 30c is reduced.
As a result, the main valve body 30a moves away from the main valve seat 30b to open the valve, and the water is discharged.

Further, in the water supply valve device 28, when the poppet hole 34a is closed by the poppet valve 34 and the float side pilot hole 38a is closed by the float side pilot valve 38, the pressure in the pressure chamber 30c is again reduced to the primary side flow path pressure. It becomes α, and the main valve body 30a moves toward the main valve seat 30b, and finally becomes a closed valve state (water stop state).
At this time, since the washing water of the primary side flow path A is gradually injected into the pressure chamber 30c from the bleed hole, the main valve is delayed by a predetermined time after the poppet hole 34a and the float side pilot hole 38a are closed. The body 30a is in a valve closed state (water stop state).
A jet pump unit 42 (details will be described later) connected via the vacuum break valve 40 is provided in the water supply passage on the downstream side of the water supply valve device 28.

Next, the details of the jet pump unit 42 will be described with reference to FIGS. 3 to 6B.
First, as shown in FIGS. 3 to 5, the jet pump unit 42 is provided on the downstream side of the water supply pipe 44 extending from the vacuum break valve 40, and the jet nozzle 46 and the flow flow from the upstream side to the downstream side. It is provided with a path switching valve 48 and a throat pipe 50, respectively.
Further, each of these jet nozzles 46, the flow path switching valve 48, and the suction port 50a of the throat pipe 50 is located on one of the left and right sides of the water storage tank body 22 (in FIG. 3, the right side when the water storage tank body 22 is viewed from the front side). ), It is arranged in the jet nozzle accommodating portion H protruding downward.

As shown in FIGS. 3 to 5, the jet nozzle 46 of the jet pump unit 42 is arranged in a state where at least a part of the jet nozzle 46 is submerged inside the water storage tank main body 22 from the water supply pipe 44 extending from the vacuum break valve 40. It sprays the supplied wash water.
The vacuum break valve 40 is for sucking air from the outside and preventing the inside of the water supply pipe 44 from the vacuum break valve 40 to the jet nozzle 46 to have a negative pressure.

Next, as shown in FIGS. 3 to 6B, the flow path switching valve 48 of the jet pump unit 42 is provided near the downstream side of the jet nozzle 46, and stores the flow path of the washing water jetted from the jet nozzle 46. It can be switched according to the water level WL in the tank body 22.
Further, as shown in FIGS. 3 to 6B, the throat pipe 50 of the jet pump unit 42 is provided in the vicinity of the downstream side of the flow path switching valve 48. A suction port 50a is formed at one end (upstream end) of the throat pipe 50, while a discharge port 50b for discharging washing water is formed at the other end (downstream end) of the throat pipe 50.
Further, as shown in FIG. 4, the throat tube 50 has a tube shape extending from the suction port 50a to the discharge port 50b, for example, an inverted U shape (or, in other words, an inverted J shape). Or it is formed in a gooseneck shape).
Here, the jet nozzle 46 is arranged so as to face the suction port 50a of the throat tube 50. The suction port 50a and the jet nozzle 46 of these throat pipes 50 are constantly submerged in the water storage tank main body 22.

Further, as shown in FIGS. 3 and 4, the flow path switching valve 48 flushes the flow path of the jet-injected wash water to the toilet bowl main body 4 side according to the water level WL in the water storage tank main body 22. It is possible to switch to either the water flow path 52 or the tank water storage flow path 54 communicating with the water storage tank main body 22 side.
Specifically, in the toilet bowl cleaning flow path 52, when the bowl portion 6 of the toilet bowl body 4 is cleaned, the suction port 50a of the throat pipe 50 is opened by the flow path switching valve 48, and the toilet jet nozzle 46 jets the flow path 52 for cleaning. This is a flow path for water to flow into the suction port 50a of the throat pipe 50. The wash water that has flowed into the throat pipe 50 through this flow path flows out of the discharge port 50b of the throat pipe 50, and is discharged from the drain port 14 of the wash water tank device 1 to the headrace 16 side of the toilet bowl body 4. It has become.
On the other hand, in the tank water storage flow path 54, the suction port 50a of the throat pipe 50 is closed by the flow path switching valve 48 when the water storage tank main body 22 is storing water, and the throat pipe 50 is used for the washing water jet-injected from the jet nozzle 46. It is a flow path that is directed into the water storage tank main body 22 outside the throat pipe 50 without flowing into the water.

By the way, when the flow path switching valve 48 is set in the flow path 52 for cleaning the toilet bowl, the jet nozzle 46 jets the cleaning water from the suction port 50a of the throat tube 50 toward the inside to jet the cleaning water into the throat tube 50. The so-called "jet pumping action" is induced, in which the flow rate of the washing water flowing through the inside is increased more than the flow rate of the washing water ejected from the jet nozzle 46. As a result, the increased flow rate of the washing water is supplied from the discharge port 50b of the throat pipe 50 to the headrace 16 of the toilet body 4 via the drain port 14.
Regarding the term "jet pumping action" described in the present specification, the flow itself of the vigorous washing water jetted from the jet nozzle 46 toward the suction port 50a of the throat tube 50 is a pump or the like. A negative pressure is formed so as to directly draw in the surrounding washing water such as in the vicinity of the suction port 50a of the throat tube 50 without depending on other mechanical elements, and this negative pressure is used in the throat tube 50. It means the action of transporting the washing water in the water storage tank body 22 sucked into the toilet body 4 side.

Further, as shown in FIGS. 4 and 5, an overflow pipe 56 extending in the vertical direction is provided in the water storage tank main body 22. The overflow pipe 56 is provided adjacent to a descending pipe portion 38b extending in the vertical direction of the throat pipe 50 of the jet pump unit 42, and its lower end communicates with the drain port 14.
As a result, the washing water in which the water level WL in the water storage tank main body 22 rises above the still water level WL0 and exceeds the position of the overflow port 56a of the overflow pipe 56 flows into the overflow pipe 56 and flows from the drain port 14 to the toilet bowl. It is supplied as make-up water to the headrace 16 of the main body 4.
Further, as shown in FIGS. 3 to 5, a replenishment water channel (replenishment water pipe 58) for connecting a part of the tank water storage flow path 54 and the overflow port 56a is provided in the water storage tank main body 22.
As a result, a part of the washing water of the tank water storage flow path 54 flows into the overflow pipe 56 through the make-up water pipe 58, is supplied from the drain port 14 to the headrace 16 of the toilet body 4, and finally. , The toilet bowl body 4 is used as make-up water for forming a sealing water.

Next, as shown in FIGS. 4 and 5, the washing water tank device 1 includes a large / small washing switching device 60 provided in the water storage tank main body 22, and the large / small washing switching device 60 may be used for a large washing mode or. It is possible to switch to one of the small cleaning modes.
Further, the large / small cleaning switching device 60 includes a small tank 62 for switching large / small cleaning provided in the water storage tank main body 22, and a large / small cleaning switching valve device 64 provided in the small tank 62.
As shown in FIG. 4, when the large / small cleaning switching device 60 is switched to the large cleaning mode, the switching valve body 64a of the large / small cleaning switching valve device 64 is opened and the switching opening of the small tank 62 is opened. 62a is designed to be opened.
On the other hand, when the large / small cleaning switching device 60 is switched to the small cleaning mode, the switching valve body 64a of the large / small cleaning switching valve device 64 is closed and the switching opening 62a of the small tank 62 is closed. It has become.

Next, the details of the float height mechanism M1 in the water supply valve device 28 of the washing water tank device 1 of the present embodiment will be described with reference to FIGS. 6 to 13B.
First, FIG. 6 is a perspective view of the water supply valve device of the washing water tank device according to the first embodiment of the present invention as viewed from diagonally above the front right. Further, FIG. 7 is a plan view of the water supply valve device of the washing water tank device according to the first embodiment of the present invention.
Next, FIGS. 8A and 8B are cross-sectional views taken along the line VIIIA-VIIIA of FIG. 7 of the water supply valve device of the washing water tank device according to the first embodiment of the present invention, and are the main valves of the water supply valve device. The closed state and the open state of the float side pilot valve are shown.
Further, FIG. 9 is a perspective view of the float height adjusting mechanism in the water supply valve device of the washing water tank device according to the first embodiment of the present invention as viewed from diagonally below.

First, as shown in FIGS. 6 to 8B, the water supply valve device 28 includes a lever arm 66 that can open and close the float side pilot valve 38. The base end of the lever arm 66 is connected to the hinge portion 28b of the main body portion 28a of the water supply valve device 28.
On the other hand, the tip of the lever arm 66 is connected to the float shaft 36b of the float 36 (float main body 36a and float shaft 36b).
As a result, the lever arm 66 can swing around the hinge axis C1 of the hinge portion 28b in the main body portion 28a of the water supply valve device 28 by the vertical movement of the float 36. Further, a float side pilot hole 38a is provided in the vicinity of the hinge portion 28b in the main body portion 28a of the water supply valve device 28, and the float side is provided at the base end portion of the lever arm 66 facing the float side pilot hole 38a. A pilot valve 38 is provided.
As a result, when the lever arm 66 swings about the hinge axis C1 due to the vertical movement of the float 36, the float side pilot valve 38 closes the float side pilot hole 38a (see FIG. 8A) or opens the valve (see FIG. 8A). It is possible to switch to any of (see FIG. 8B).

Next, as shown in FIGS. 6 to 9, the float height adjusting mechanism M1 includes a rotation operating member 68 provided at a connection portion between the lever arm 66 and the float shaft 36b. Specifically, the rotation operation member 68 is provided in the upper part of the connection hole 66a formed on the tip end side of the lever arm 66.
Further, when the rotation operation member 68 is rotated around the axis in the state where the lever arm 66 and the float shaft 36b are connected, both the float body 36a and the float shaft 36b of the float 36 do not rotate in the circumferential direction. It is movable in the vertical direction with respect to the lever arm 66 and the rotation operation member 68.

Next, FIG. 10 is a perspective view of a float (float body and float shaft) in the water supply valve device of the washing water tank device according to the first embodiment of the present invention as viewed from diagonally above. 11A and 11B show a perspective view and a perspective sectional view of the rotation operating member of the float height adjusting mechanism in the water supply valve device of the washing water tank device according to the first embodiment of the present invention as viewed from diagonally below. .. Further, FIG. 12 is a vertical cross-sectional view of the float height adjusting mechanism in the water supply valve device of the washing water tank device according to the first embodiment of the present invention.
First, as shown in FIGS. 9 and 10, the float 36 includes a float body 36a and a float shaft 36b integrally provided with respect to the upper surface of the float body 36a and extending upward.

The float body 36a of the float 36 has a hollow substantially rectangular parallelepiped shape, and moves up and down by buoyancy according to the water level WL in the water storage tank body 22. By moving the float body 36a up and down, the float shaft 36b also moves up and down integrally with the float body 36a.
Further, the float shaft 36b is a round bar having a substantially cylindrical or columnar shape, and a male screw (male screw groove 36c) is formed on the outer peripheral surface of the float shaft 36b.
Further, a pair (two) of vertical recesses 36d for restricting rotation of the float shaft are formed on the outer peripheral surface of the float shaft 36b. The vertical recesses 36d are arranged diagonally to each other in the plan view of the float shaft 36b, and extend in the axial direction so as to divide the male thread groove 36c.

Next, as shown in FIGS. 9 to 12, the rotation operating member 68 of the float height adjusting mechanism M1 is a generally tubular or annular member screwed into the male screw (male thread groove 36c) of the float shaft 36b. be.
Further, as shown in FIGS. 11A to 12, the rotation operation member 68 is engaged with a substantially cylindrical rotation operation main body portion 68a and a plurality (four) protruding downward from the lower end of the rotation operation main body portion 68a. A portion (engagement leg 68b) is provided. These engaging legs 68b are located inside the inner peripheral wall surface forming the connecting hole 66a of the lever arm 66 and outside the outer peripheral surface of the float shaft 36b.
Further, a female thread (female thread 68c) that can be screwed into the male thread groove 36c of the float shaft 36b is formed on the inner peripheral surface of the rotation operation member 68. The female thread 68c is formed in a single spiral shape that goes around the inner peripheral surface of the rotation operating member 68.
Further, the engaging legs 68b are arranged at intervals in the circumferential direction of the rotation operation main body portion 68a, and an engaging portion (engaging protrusion 68d) protruding outward is provided at the lower end portion of each engaging leg 68b. Has been done.

Next, as shown in FIGS. 9 and 12, a connection hole 66a through which the float shaft 36b can be inserted in the vertical direction is formed at the tip of the lever arm 66.
Further, as shown in FIG. 12, the inner peripheral wall surface forming the connection hole 66a of the lever arm 66 is recessed toward the outside and an engaged portion (annular recess 66b) formed in an annular shape along the circumferential direction. Is formed. An engaging portion of the rotation operating member 68 (engaging projection 68d of each engaging leg 68b) is engaged in the annular recess 66b.
For example, when the rotation operation member 68 is rotated around the axial center axis C2, the engagement projection 68d of each engagement leg 68b of the rotation operation member 68 becomes the axial center axis in the annular recess 66b of the lever arm 66. It can rotate and slide around C2.
As a result, the entire rotation operation member 68 can rotate around the axial center axis C2 with respect to the float shaft 36b and the lever arm 66.

Further, as shown in FIGS. 9, 10 and 12, on the inner peripheral wall surface of the connection hole 66a of the lever arm 66, the float shaft rotation protruding inward and extending downward in the axial direction in the portion below the annular recess 66b. A fitting convex portion (vertical convex portion 66c) for regulation is provided, and the float shaft 36b can be fitted in the fitting concave portion (vertical concave portion 36d) for restricting rotation of the float shaft.
As a result, when the vertical convex portion 66c for restricting the rotation of the float shaft is fitted in the vertical concave portion 36d of the float shaft 36b, the float shaft 36b is restricted from rotating around its axis, while the connection of the lever arm 66 is restricted. When moving in the vertical direction with respect to the hole 66a, the vertical concave portion 36d for restricting the rotation of the float shaft of the float shaft 36b can slide in the vertical direction while fitting with the vertical convex portion 66c for restricting the rotation of the float shaft. It has become.
Here, the rotation operation main body portion 68a of the rotation operation member 68, each engagement leg 68b and each engagement protrusion 68d, and the annular recess 66b of the connection hole 66a of the lever arm 66 make the rotation operation member 68 with respect to the float shaft 36b. It functions as a float shaft rotation regulating unit that regulates the rotation of the float shaft 36b around the shaft when the float shaft 36b is rotated around the shaft. These float shaft rotation restricting portions 66b, 68a, 68b, 68d are provided at the connection portion between the rotation operating member 68 and the lever arm 66.

Further, with respect to the vertical convex portion 66c for restricting the rotation of the float shaft of the connection hole 66a of the lever arm 66 and the vertical concave portion 36d for restricting the rotation of the float shaft of the float shaft 36b, the rotation operation member 68 is attached to the float shaft 36b. The float shaft 36b functions as a float shaft rotation restricting unit that regulates the rotation of the float shaft 36b around the shaft when the rotation operation is performed around the shaft.
That is, these float shaft rotation restricting portions 36d and 66c are provided at the connection portion between the lever arm 66 and the float shaft 36b.
Further, these float shaft rotation restricting portions 36d, 66b, 66c, 68a, 68b, 68d rotate the rotation operating member 68 around the axis of the float shaft 36b with respect to the lever arm 66 when the rotation operating member 68 is rotated. While making it rotatable, both the float body and the float shaft are made movable in the vertical direction with respect to the lever arm 66 and the rotation operation member 68 without rotating in the circumferential direction.

Next, as shown in FIG. 7, the float body 36a of the float 36 has a rectangular shape in the plan view shown in FIG. 7, and more specifically, it has a rectangular shape.
Further, as shown in FIG. 7, the float main body 36a includes a first central axis C3 and a second central axis C4 that bisect the sides facing each other in a rectangular shape in a plan view. Further, as shown in FIG. 7, each of the first central axis C3 and the second central axis C4 of the float main body 36a has the lever arm 66 and the float shaft 36b connected to each other in a plan view. Is inclined with respect to the central axis C5 in the longitudinal direction of the above.

Further, as shown in FIG. 7, each of the first central axis C3 and the second central axis C4 of the float body 36a bisects each of the rectangular short side 36e and the long side 36f of the float body 36a. The directional center axis C3 and the lateral center axis C4, respectively.
Further, as shown in FIG. 7, the float shaft 36b is provided on the longitudinal center axis C3 of the float main body 36a in a plan view.
Further, as shown in FIG. 7, the float shaft 36b is farther from the center O1 of the rectangular shape in the plan view of the float main body 36a with respect to the main body portion 28a of the water supply valve device 28 accommodating the water supply valve (main valve 30). It is located on the side of the rank.

Next, with reference to FIGS. 12 to 13B, an operation method of the float height adjusting mechanism M1 in the water supply valve device 28 of the washing water tank device 1 according to the first embodiment of the present invention will be described.
First, FIGS. 13A and 13B are vertical sectional views of a float height adjusting device in a water supply valve device of a washing water tank device according to the first embodiment of the present invention. Further, FIG. 13A shows a state in which the float is adjusted to the first height position (low position), and FIG. 13B shows the float adjusted to the second height position (high position) higher than the first height position. Indicates the state of being done.

First, with respect to the float 36 set at the first height position (low position P1) in the water supply valve device 28 of the washing water tank device 1 according to the present embodiment shown in FIG. 13A, the float height adjusting mechanism M1 is used. When adjusting to the second height position (high position P2) shown in FIG. 13B, the operator moves the rotation operating member 68 of the float height adjusting mechanism M1 shown in FIG. 13A in one direction around the axial center axis C2. Rotate in (rotation direction U).
At this time, as shown in FIGS. 12 and 13A, the rotation operation main body of the rotation operation member 68 is screwed by the screwing action between the female screw (female thread 68c) of the rotation operation member 68 and the male screw (male thread groove 36c) of the float shaft 36b. Since the portion 68a and each engaging leg 68b rotate in the rotation direction U around the axial center axis C2 with respect to the float shaft 36b, each engaging projection 68d of each engaging leg 68b of the rotation operating member 68 is a lever arm 66. It rotates in the rotation direction U around the axial center axis C2 along the annular recess 66b of the connection hole 66a.

Further, at this time, the connection portion between the lever arm 66 and the male screw (male thread groove 36c) of the float shaft 36b is in a non-screwed state, and the vertical length for restricting the rotation of the float shaft of the connection hole 66a of the lever arm 66 is set. Since the convex portion 66c and the vertical concave portion 36d of the float shaft 36b are fitted to each other, the rotation of the float shaft 36b around the axial center axis C2 with respect to the connection hole 66a of the lever arm 66 is restricted, and the float shaft 36b is restricted from rotating. The fitting recess (vertical recess 36d) moves upward in the axial direction along the fitting convex portion (vertical convex portion 66c) of the connection hole 66a of the lever arm 66.
Therefore, while the vertical height positions of the lever arm 66 and the rotation operating member 68 are maintained at a constant height position P0, the entire float shaft 36b moves (ascends) axially upward with respect to the rotation operating member 68. do.
Therefore, the float body 36a also rises together with the float shaft 36b, and the float 36 is adjusted to the second height position (high position P2) shown in FIG. 13B.

Similarly, when the float 36 at the second height position (high position P2) shown in FIG. 13B is readjusted to the first height position (low position P1) shown in FIG. 13, the float height shown in FIG. 13B is adjusted. The rotation operation member 68 of the adjustment mechanism M1 is rotated in the other direction (rotation direction D) around the axial center axis C2.
As a result, the rotation operation main body portion 68a of the rotation operation member 68 and each engagement leg 68b rotate in the rotation direction D around the axial center axis C2 with respect to the float shaft 36b, so that each engagement leg 68b of the rotation operation member 68 Each engaging protrusion 68d of the above rotates in the rotation direction D around the axial center axis C2 along the annular recess 66b of the connection hole 66a of the lever arm 66.
At this time, the connection portion between the lever arm 66 and the male screw (male screw groove 36c) of the float shaft 36b is in a non-screw state, and the vertically convex portion for restricting the rotation of the float shaft of the connection hole 66a of the lever arm 66 is in a non-screw state. Since the 66c and the vertical recess 36d of the float shaft 36b are fitted, the rotation of the float shaft 36b around the axial center axis C2 with respect to the connection hole 66a of the lever arm 66 is restricted, and the float shaft 36b is fitted. The concave portion (vertical concave portion 36d) moves downward in the axial direction along the fitting convex portion (vertical convex portion 66c) of the connection hole 66a of the lever arm 66.
Therefore, while the vertical height positions of the lever arm 66 and the rotation operation member 68 are maintained at a constant height position P0, the entire float shaft 36b moves (descends) axially downward with respect to the rotation operation member 68. do.
Therefore, the float body 36a also descends together with the float shaft 36b, and the float 36 is adjusted to the first height position (low position P1) shown in FIG. 13A.

Next, the operation of the washing water tank device 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 13B.
According to the washing water tank device 1 according to the first embodiment of the present invention described above, the float shaft 36b fixed to the float body 36a of the water supply valve device 28 and extending upward from the float body 36a is connected to the lever arm 66. In this state, the float height adjusting mechanism M1 can move both the float body 36a and the float shaft 36b in the vertical direction with respect to the lever arm 66 without rotating them in the circumferential direction.
Further, when the height position of the float body 36a is adjusted by the float height adjusting mechanism M1, the float height adjusting mechanism M1 is provided at the connection portion between the lever arm 66 and the float shaft 36b to store water. Even if the entire tank body 22 is miniaturized, the float height adjusting mechanism M1 can be easily accessed from above the water storage tank body 22, so that the height positions of both the float body 36a and the float shaft 36b can be adjusted. It will be easy.
At this time, since the float shaft 36b extends upward from the float main body 36a, it is possible to suppress the influence of the float shaft 36b on the buoyancy acting on the inside of the float main body 36a.
As a result, while realizing the miniaturization of the entire water storage tank main body 22, it is possible to facilitate the adjustment work of the height positions of both the float main body 36a and the float shaft 36b of the water supply valve device 28, and the float main body 36a. It is possible to suppress the influence on the buoyancy of.

Further, according to the washing water tank device 1 according to the present embodiment, when adjusting the height position of the float main body 36a of the water supply valve device 28, the rotation operating member 68 of the float height adjusting mechanism M1 is attached to the float shaft 36b. On the other hand, it is rotated around the axis.
At this time, while the height positions of the lever arm 66 and the rotation operation member 68 in the vertical direction are maintained, the entire float shaft 36b has a female screw (female thread 68c) of the rotation operation member 68 and a male screw (male thread groove 36c) of the float shaft 36b. ), It is possible to move in the axial direction with respect to the rotation operation member 68.
On the other hand, the float shaft rotation restricting portion of the float height adjusting mechanism M1 provided at the connection portion between the rotation operation member 68 and the lever arm 66 (the annular recess 66b of the connection hole 66a of the lever arm 66, the rotation operation of the rotation operation member 68). Since the connection portion between the lever arm 66 and the male screw (male thread groove 36c) of the float shaft 36b is in a non-screw state due to each engaging leg 68b and each engaging protrusion 68d of the main body portion 68a, the float shaft 36b itself Is restricted from rotating around the axis.
Therefore, with respect to the rotation operation member 68 of the float height adjusting mechanism M1, the female thread (female thread 68c) is screwed into the male thread (male thread groove 36c) of the float shaft 36b, and the engagement leg 68b of each engagement leg 68b of the rotation operation main body portion 68a is screwed. Since each engaging protrusion 68d can rotate in the circumferential direction with respect to the annular recess 66b of the connection hole 66a of the lever arm 66, it can be rotated about the axis of the float shaft 36b with respect to the lever arm 66.
On the other hand, both the float body 36a and the float shaft 36b of the float 36 are moved in the vertical direction with respect to the rotation operation member 68 and the lever arm 66 without being rotated in the circumferential direction (around the axial center axis C2). Can be done.
Therefore, the height position P1 in the vertical direction without rotating the float body 36a in the circumferential direction by a simple operation of rotating the rotation operation member 68 of the float height adjusting mechanism M1 around the axial center axis C2. P2 can be easily adjusted.

Further, according to the washing water tank device 1 according to the present embodiment, when the rotation operation member 68 of the float height adjusting mechanism M1 is rotated, the rotation operation main body portion 68a of the rotation operation member 68 rotates around the axis (center in the axial direction). By rotating around the axis C2), the entire float shaft 36b moves in the axial direction due to the screwing action between the female screw (female thread 68c) of the rotation operation main body 68a and the male screw (male thread groove 36c) of the float shaft 36b. be able to.
At this time, the float shaft rotation restricting portion of the float height adjusting mechanism M1 provided at the connection portion between the rotation operation member 68 and the lever arm 66 (the annular recess 66b of the connection hole 66a of the lever arm 66, the rotation of the rotation operation member 68). Each engaging leg 68b and each engaging projection 68d of the operating body portion 68a) with the engaging portion of the rotation operating member 68 (each engaging projection 68d of each engaging leg 68b of the rotation operating body portion 68a of the rotation operating member 68). The engaged portion of the lever arm 66 (the annular recess 66b of the connection hole 66a of the lever arm 66) is engaged, and the rotation operation main body portion 68a and the engagement portion (each engagement leg 68b and each engagement) of the rotation operation member 68 are engaged. The protrusion 68d) can rotate about the axial center axis C2 with respect to the connection hole 66a of the lever arm 66, while the rotation of the float shaft 36b itself around the axis is restricted.
As a result, while the vertical height position (constant height position P0) of the lever arm 66 and the rotation operation member 68 is maintained, the entire float shaft 36b is a female screw (female screw) of the rotation operation main body portion 68a of the rotation operation member 68. When the rotation operation member 68 is rotationally operated to the axial center axis C2 by the screwing action between the ridge 68c) and the male screw (male thread groove 36c) of the float shaft 36b, the rotation operation member 68 may move in the axial direction with respect to the rotation operation member 68. can.
Further, when the rotation operating member 68 of the float height adjusting mechanism M1 is rotated, the float shaft rotation restricting portion (float) of the float height adjusting mechanism M1 provided at the connection portion between the lever arm 66 and the float shaft 36b is provided. The vertical concave portion 36d for restricting the rotation of the float shaft of the shaft 36b and the vertical convex portion 66c for restricting the rotation of the float shaft of the lever arm 66) allow the fitting convex portion (vertical convex portion 66c) and the float of the connection hole 66a of the lever arm 66. The fitting recess (vertical recess 36d) of the shaft 36b is fitted.
As a result, the rotation of the float shaft 36b around the axial center axis C2 with respect to the connection hole 66a of the lever arm 66 is restricted, and the fitting recess (vertical recess 36d) of the float shaft 36b is formed in the connection hole 66a of the lever arm 66. It can move in the axial direction along the fitting convex portion (vertical convex portion 66c).
Therefore, the height positions of both the rotation operation member 68 and the lever arm 66 are constant height positions by a simple operation of rotating the rotation operation main body portion 68a of the rotation operation member 68 of the float height adjustment mechanism M1. While being maintained at P0, both the float body 36a and the float shaft 36b are moved in the vertical direction without being rotated in the circumferential direction (around the axial center axis C2) to easily adjust the height positions P1 and P2. can do.

Further, according to the washing water tank device 1 according to the present embodiment, even if the entire water storage tank body 22 is miniaturized, it floats from above the water storage tank body 22 with the top lid (not shown) of the exterior tank T removed. Since the height adjusting mechanism M1 is easily accessible, it is easy to adjust the height position of the float shaft 36b.
Therefore, the adjustment work of the height positions of both the float body 36a and the float shaft 36b becomes easy.

Further, according to the washing water tank device 1 according to the present embodiment, when the entire water storage tank body 22 is miniaturized, for example, it is required to reduce the size of the water storage tank body 22 in the front-rear depth direction rather than the left-right width direction. Even if this is the case, by making the shape of the float body 36a in the plan view rectangular, the shape of the float body 36a in the plan view is in the anteroposterior depth direction as compared with the case where the shape of the float body 36a in the plan view is circular. The dimensions can be suppressed.
Therefore, it is possible to suppress the dimensions of the entire water supply valve device 28 and the entire water storage tank main body 22 in the front-rear depth direction.
Further, the buoyancy acting on the float body 36a can be sufficiently secured.

Further, according to the washing water tank device 1 according to the present embodiment, the first central axis (longitudinal central axis C3) that bisects the short side 36e of the rectangular shape in the plan view of the float body 36a shown in FIG. 7 and The second central axis (center axis C4 in the lateral direction) that bisects the long side 36f of the rectangular shape in the plan view of the float body 36a is connected to the lever arm 66 and the float shaft 36b in the plan view. In this state, since the lever arm 66 is tilted with respect to the central axis C5 in the longitudinal direction, the float body 36a can be arranged in a plane tilted posture with respect to the lever arm 66.
Therefore, in a plan view, one of the longitudinal center axis C3 or the lateral center axis C4 of the float body 36a is aligned with the longitudinal center axis C5 of the lever arm 66, and the float body 36a is juxtaposed with respect to the lever arm 66. It is possible to secure a large horizontal maximum distance L1 (see FIG. 7) from the position P3 of the base end portion of the lever arm 66 to the position P4 of the distal end portion of the float main body 36a as compared with the case where the lever arm 66 is used.
As a result, the torque required to swing the lever arm 66 by the vertical movement of the float main body 36a and the float shaft 36b can be secured, so that the buoyancy required for the float main body 36a can be reduced.
Therefore, the float main body 36a itself can be miniaturized, and the entire water supply valve device 28 can be miniaturized, so that the entire water storage tank main body 22 can be miniaturized.

Further, according to the washing water tank device 1 according to the present embodiment, as shown in FIG. 7, the float shaft 36b of the water supply valve device 28 is provided on the longitudinal center axis C3 of the float main body 36a in a plan view. The float main body 36a can be arranged distal to the main body portion 28a of the water supply valve device 28 with respect to the rectangular center O1 in the plan view.
Thereby, the float shaft 36b can be arranged so as to be eccentric to the distal side of the main body portion 28a of the water supply valve device 28 with respect to the center O1 in the plan view of the float main body 36a.
As a result, a part of the float main body 36a can be arranged with respect to the dead space formed between the float shaft 36b in the water storage tank main body 22 and the main body portion 28a of the water supply valve device 28 on the proximal side thereof. can.
Therefore, the space required for vertical movement of the float main body 36a and the surrounding space can be suppressed, and the entire water supply valve device 28 can be effectively miniaturized.

Further, according to the flush toilet 2 provided with the flush water tank device 1 according to the present embodiment, the height position adjustment work of the float body 36a of the water supply valve device 28 is performed while realizing the miniaturization of the entire water storage tank body 22. And can suppress the influence on the buoyancy of the float main body 36a.

In the washing water tank device 1 according to the first embodiment of the present invention described above, the float shaft rotation restricting portion of the float height adjusting mechanism M1 of the water supply valve device 28 is engaged with each engaging leg 68b of the rotation operating member 68. By using the joint protrusion 68d as the engaging portion and the annular recess 66b of the connection hole 66a of the lever arm 66 as the engaged portion, the rotation operating member 68 is engaged on the engaging side (convex side) and the lever arm 66 is engaged. The form of the side (concave side) has been described, but the present invention is not limited to such a form, and the rotation operation member 68 is the engaged side (concave side) and the lever arm 66 is the engaging side (convex side). May be.

Next, the washing water tank device 100 according to the second embodiment of the present invention will be described with reference to FIGS. 14 and 15.
First, FIGS. 14 and 15 show a front view and a plan view of a float height adjusting device in a water supply valve device of a washing water tank device according to a second embodiment of the present invention, respectively.
Here, in the washing water tank device 100 according to the second embodiment of the present invention shown in FIGS. 14 and 15, the same portion as the washing water tank device 1 according to the first embodiment of the present invention shown in FIGS. 1 to 13B described above. The same reference numerals are given to the above, and the description thereof will be omitted.
As shown in FIGS. 14 and 15, in the washing water tank device 100 according to the second embodiment of the present invention, only the structure of the lever arm 166 of the water supply valve device 128 and the float height adjusting mechanism M101 is the above-mentioned invention. The structure is different from that of the lever arm 66 and the float height adjusting mechanism M1 of the water supply valve device 28 of the washing water tank device 1 according to the first embodiment.

Specifically, as shown in FIGS. 14 and 15, in the lever arm 166 of the water supply valve device 128 of the washing water tank device 100 according to the present embodiment, from the inner peripheral wall surface of the connection hole 166a on the tip end side to the inside. A pair of projecting float shaft rotation restricting fitting protrusions 166c, 166c are provided.
Each of these fitting protrusions 166c and 166c is fitted to each of the pair of fitting recesses (vertical recesses 36d) of the float shaft 36b.
Further, the rotation operation member 168 of the float height adjusting mechanism M101 is screwed into the male thread groove 36c of the float shaft 36b, and is sandwiched between the upper support portion 166b and the lower support portion 166d of the lever arm 166.
As a result, the rotation operation member 168 is rotatably supported around the central axis C2 in the axial direction with respect to the lever arm 166.

According to the washing water tank device 100 according to the second embodiment of the present invention described above, when the rotation operation member 168 of the float height adjusting mechanism M101 is rotationally operated, the rotation operation member 168 is rotated around the central axis C2 in the rotation axis direction. By rotating, the entire float shaft 36b can be moved in the axial direction by the screwing action between the rotation operation member 168 and the male screw (male screw groove 36c) of the float shaft 36b.
At this time, the float shaft rotation restricting portion of the float height adjusting mechanism M1 provided at the connection portion between the lever arm 166 and the float shaft 36b (the vertical recess 36d for regulating the float shaft rotation of the float shaft 36b, the float of the lever arm 166). The fitting convex portion 166c of the connection hole 166a of the lever arm 166 and the fitting concave portion (vertical concave portion 36d) of the float shaft 36b are fitted by the fitting convex portion 166c) for restricting the rotation of the shaft.
As a result, the rotation of the float shaft 36b around the axial center axis C2 with respect to the connection hole 166a of the lever arm 166 is restricted, and the fitting recess (vertical recess 36d) of the float shaft 36b is formed in the connection hole 166a of the lever arm 166. It can move axially along the fitting protrusion 166c.
Therefore, the height positions of both the rotation operation member 168 and the lever arm 166 are maintained at a constant height position P0 by a simple operation of rotating the rotation operation member 168 of the float height adjustment mechanism M101. Both the float body 36a and the float shaft 36b can be moved in the vertical direction without being rotated in the circumferential direction (around the axial center axis C2) to easily adjust the height positions P1 and P2.

Regarding the washing water tank devices 1 and 100 according to the first and second embodiments of the present invention described above, the mode in which the jet pump unit 42 is adopted has been described, but other than the jet pump unit 42 is adopted. The morphology is also applicable.
That is, as another embodiment of the washing water tank device 1, 100, the washing water stored in the water storage tank main body 22 is discharged from the drain port 14 by lowering the water level WL by gravity and supplied to the toilet main body 4. A so-called gravity water supply type wash water tank device is adopted, and in this gravity water supply type wash water tank device, the water supply valve device 28 of the wash water tank devices 1, 100 according to the first embodiment and the second embodiment of the present invention. , 128 may be applied.

Further, in the washing water tank devices 1 and 100 according to the first and second embodiments of the present invention described above, the float shaft rotation regulating portions of the float height adjusting mechanisms M1 and M101 of the water supply valve devices 28 and 128 are described. The fitting protrusions 66c and 166c for regulating the rotation of the float shaft in the connection holes 66a and 166a of the lever arms 66 and 166 are on the convex side, and the fitting recess (vertical recess 36d) for regulating the rotation of the float shaft of the float shaft 36b is concave. Although the form on the side has been described, the present invention is not limited to such a form, and the fitting concave portion is provided in the connection holes 66a and 166a of the lever arms 66 and 166 to form the concave side, and the fitting convex portion is formed on the outer peripheral surface of the float shaft 36b. May be provided and the convex side may be provided.

1 Washing water tank device according to the first embodiment of the present invention 2 Washing toilet bowl 4 Toilet bowl body 6 Bowl part 8 Rim part 10 Shelf part 12 Trap drainage channel 12a Trap drainage channel entrance 12b Trap drainage channel rise pipe 12c Trap drainage channel Down pipe 14 Drain port 16 Toilet bowl body headrace 16a 1st headrace 16b 2nd headrace 18 1st rim spout 20 2nd rim spout 22 Water storage tank body 24 Water supply pipe 26 Constant flow valve 28 Water supply valve device 28a Main body of water supply valve device 28b Hinging part 30 Main valve (water supply valve)
30a Main valve body 30b Main valve seat 30c Pressure chamber 32 Operation device (operation unit)
32a Operation lever (operation unit)
32b Drive rotation shaft (operation unit)
34 Poppet valve 34a Poppet hole 36 Float 36a Float body 36b Float shaft 36c Male thread groove (male thread)
36d Vertical recess for float shaft rotation regulation (float shaft rotation regulation part, fitting recess)
36e Short side of float body 36f Long side of float body 38 Float side pilot valve 38a Float side pilot hole 40 Vacuum break valve 42 Jet pump unit 44 Water supply pipe 46 Jet nozzle 48 Flow switching valve 50 Throat pipe 50a Suction port 50b Discharge port 50c Throat pipe down pipe 52 Toilet cleaning flow path 54 Tank water storage flow path 56 Overflow pipe 56a Overflow port 58 Replenishment water pipe 60 Large / small cleaning switching device 62 Small tank for large / small cleaning switching 62a Switching opening 64 Large / small cleaning switching valve Equipment (large / small cleaning switching valve)
64a Switching valve body 66 Lever arm 66a Connection hole 66b An annular recess (engaged part, float shaft rotation restricting part)
66c Vertical convex part for float shaft rotation regulation (float shaft rotation regulation part, fitting convex part)
68 Rotation operation member (float height adjustment mechanism)
68a Rotation operation main body (float shaft rotation regulation part)
68b Engagement leg (engagement part, float shaft rotation regulation part)
68c Female thread (female thread)
68d Engagement protrusion (engagement part, float shaft rotation regulation part)
100 Washing water tank device according to the second embodiment of the present invention 128 Water supply valve device 166 Lever arm 166a Connection hole 166b Upper support part 166c Fitting convex part for float shaft rotation regulation part (float shaft rotation regulation part, fitting convex part)
166d Lower support part 168 Rotation operation member (float height adjustment mechanism)
A Primary side flow path of water supply pipe B Secondary side flow path of water supply pipe C1 Hinge axis C2 Axial center axis of rotation operating member and float axis C3 Longitudinal center axis that bisects the rectangular short side of the float body (1st center axis)
The center axis in the lateral direction (second center axis) that bisects the long side of the rectangular shape of the C4 float body.
C5 Longitudinal central axis of the lever arm D Rotational direction of the rotation operating member H Jet nozzle accommodating part L1 Maximum horizontal distance from the position of the base end of the lever arm to the position of the distal end of the float body M1 Float Height adjustment mechanism M101 Float height adjustment mechanism O1 Center of rectangular shape in plan view of float body P0 Vertical height position of lever arm and rotation operation member (constant height position)
First height position (low position) in the vertical direction of the P1 float (float body and float axis)
Second height position (high position) in the vertical direction of the P2 float (float body and float axis)
P3 Position of the base end of the lever arm P4 Position of the distal end of the float body T Exterior tank U Rotation direction of the rotation operating member WL Water level WL0 Stop water level α Primary side pressure

Claims (8)

A wash water tank device that supplies wash water to the toilet bowl body of a flush toilet.
The water storage tank body that makes it possible to store the washing water that cleans the toilet bowl body,
It has a water supply valve device that enables water supply and stoppage of the washing water supplied from the water supply source into the water storage tank body.
The water supply valve device includes a water supply channel to which wash water is supplied from the water supply source, a water supply valve that opens and closes the water supply channel, a lever arm that is connected to the water supply valve and can swing, and a water storage tank body. Both the float body that moves up and down by buoyancy according to the water level, the float shaft that is fixed to the float body and extends upward from the float body and connected to the lever arm, and the float body and the float shaft. It is equipped with a float height adjustment mechanism that makes it possible to adjust the height position of the water supply.
The float height adjusting mechanism is provided at a connection portion between the lever arm and the float shaft, and the float height adjusting mechanism is provided around the float body and the float shaft in a state where the lever arm and the float shaft are connected to each other. A washing water tank device characterized in that it can move up and down with respect to the lever arm without rotating in a direction. The float shaft has a male screw formed on its outer peripheral surface, and the float height adjusting mechanism is provided at a connection portion between the lever arm and the float shaft and can be screwed to the male screw of the float shaft. A tubular or annular rotation operating member and a float shaft rotation regulating unit that regulates the rotation of the float shaft around the axis when the rotation operating member is rotated about the axis with respect to the float axis. I have
The float shaft rotation restricting portion is provided at the connection portion between the rotation operation member and the lever arm, and is provided at the connection portion between the lever arm and the float shaft.
The float shaft rotation restricting unit makes the rotation operation member rotatable around the axis of the float shaft with respect to the lever arm when the rotation operation member is rotated, while the float body and the float shaft have a rotation control unit. The washing water tank device according to claim 1, wherein the rotation operating member and the lever arm can be moved in the vertical direction without rotating both in the circumferential direction. The lever arm is provided on the tip side thereof and has a connection hole through which the float shaft can be inserted in the vertical direction.
The rotation operation member includes a rotation operation main body portion having a female screw screwable to the male screw of the float shaft formed on the inner circumference, and the rotation operation main body portion extending downward in the axial direction from the lower end of the rotation operation main body portion, and the lower end thereof is the lever. It is provided with an engaging portion that rotatably engages with the connection hole of the arm around the axis, and the rotation operation main body portion and the engaging portion are used as the float shaft rotation restricting portion.
The lever arm has a engaged portion in which the engaging portion of the rotation operating member is engaged on the inner peripheral wall surface forming the connection hole, and an engaged portion that protrudes inward on the inner peripheral wall surface and is larger than the engaged portion. It is provided with a fitting convex portion formed so as to extend downward, and the engaged portion and the fitting convex portion are used as the float shaft rotation restricting portion.
The float shaft is formed so as to extend in the axial direction on the outer peripheral surface thereof, and a fitting recess that is slidably fitted to the fitting convex portion of the lever arm in the axial direction is used as the float shaft rotation restricting portion. The washing water tank device according to claim 2. The washing water tank device according to claim 2, wherein the rotation operating member of the float height adjusting mechanism is provided on the upper portion of the lever arm on the tip end side. The washing water tank device according to any one of claims 1 to 4, wherein the float body has a rectangular shape in a plan view. The float body has a first central axis and a second central axis that bisect the opposite sides of a rectangular shape in a plan view, and these first central axis and the second central axis are planes. The washing water tank device according to claim 5, wherein the lever arm and the float shaft are connected to each other and are inclined with respect to the central axis in the longitudinal direction of the lever arm. The float body has a rectangular shape in a plan view, and each of the first central axis and the second central axis has a longitudinal central axis that bisects each of the short side and the long side of the rectangular shape. Each of the central axes in the lateral direction,
The float axis is provided on the longitudinal center axis of the float body in a plan view, and is arranged distal to the water supply valve from the center of the rectangular shape in the plan view of the float body. The wash water tank device according to claim 5 or 6. A flush toilet equipped with the flush water tank device according to any one of claims 1 to 7.

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