JP4517859B2 - Low tank equipment - Google Patents

Description

  The present invention relates to a row tank facility installed on a rear upper surface of a Western-style toilet, and more particularly to a double row tank facility including an outer tank and an inner tank.

  A double type low tank facility in which an inner tank is disposed in an outer tank is well known and widely available as disclosed in JP-A-11-324058, JP-A-2001-214494, and the like.

  9 to 12 show an example of a commercially available double low tank facility. FIG. 9 is a front view, FIG. 10 is a front longitudinal sectional view, and FIG. 11 is a XI-XI of FIG. Line sectional view, FIG. 12 is a horizontal sectional view.

  The low tank facility 10 includes an outer tank 12 made of earthenware and an inner tank 14 disposed in the outer tank 12. A ceramic lid 16 is mounted on the upper surface of the outer tank 12. A heat insulating material 18 is provided on each of the outer surface of the side portion and the outer surface of the bottom portion of the inner tank 14.

  From the bottom of the inner tank 14, an outflow cylinder portion 22 projects downward. The inside of the outflow cylinder portion 22 is a water outlet for the water in the inner tank 14. The outflow cylindrical portion 22 protrudes below the outer tank 12 through the opening 12 a on the bottom surface of the outer tank 12. The outer tank 12 and the inner tank 14 are connected by the nut 24 being tightened into the outflow cylinder portion 22.

  A valve seat member 25 of the float valve device 20 is fixed to the inner peripheral edge of the upper end of the outflow cylindrical portion 22, and a float valve body 26 is seated on the valve seat member 25. An overflow pipe 28 is provided so as to continue to the valve seat member 25. The overflow pipe 28 rises slightly above the stored water level in the inner tank 14. The overflow pipe 28 communicates with the valve seat member 25.

  A pair of bolts 29 project downward from the bottom of the outer tank 12. Each bolt 29 is inserted into a bolt insertion hole provided at the rear part of the western style toilet (not shown). By tightening each bolt 29 with a nut, the low tank facility is fixedly installed on the Western-style toilet. At this time, the outflow cylindrical portion 22 is fitted in the washing water receiving port on the upper surface of the rear portion of the western style toilet.

  A mounting hole 12 b of the handle device 30 is provided in the upper part of the right side surface of the outer tank 12. A column 31 of the handle device 30 is inserted into the mounting hole 12 b and fixed by a nut 32. A handle shaft 33 is inserted through the column 31. A handle 36 is fixed to the base end side of the handle shaft 33 (outside of the outer tank 12). The distal end side of the handle shaft 33 is bent in an L shape, and the float valve body 26 is connected to the distal end side via a chain 34. By turning the handle 36 and lifting the float valve body 26, the water in the inner tank 14 is discharged to the Western-style toilet through the outflow tube portion 22.

  A ball tap 40 is attached to the upper part of the side surface of the inner tank 14 in order to supply water to the inner tank 14 so as to reach a predetermined water level. The ball tap 40 includes a lever 44 that is rotated in the vertical direction by a floating ball 42. When the lever 44 tilts downward due to the discharge from the inner tank 14, the ball tap 40 is opened, and water flows out from the ball tap 40 into the inner tank 14. When the water level in the inner tank 14 rises to a predetermined water level, the lever 44 becomes substantially horizontal and the ball tap 40 is closed.

In this conventional example, the handle device 30 is provided on the right side surface (right side surface) facing the front of the outer tank 12, and the ball tap 40 is provided on the left side surface (left side surface) facing the front of the inner tank 14. Yes. The intersection between the left side surface and the back surface of the inner tank 14 is a recess that is recessed toward the center side of the inner tank 14, and the ball tap is disposed on the left side surface facing the recess. The lever 44 of the ball tap 40 extends in the left-right direction. The ball tap 40 is connected to a water stop cock 48 on the wall surface of the toilet room via a water supply hose 47. The water supply hose 47 is drawn out of the outer tank 12 through a hose insertion port provided in the bottom surface of the outer tank 12.
JP-A-11-324058 JP 2001-214494 A

  In the conventional example of FIGS. 9 to 12, the handle 36 of the low tank is provided on the right side surface facing the front, but may be provided on the left side depending on the structure of the toilet room.

  As shown in FIGS. 10 to 12, a ball tap and an overflow pipe are arranged in the inner tank, and it is not possible to change only the handle device left and right. 9 to 12, even if the handle device 30 is provided on the left side surface and the overflow pipe 28 is disposed on the right side of the float valve device, if the handle shaft 32 is turned, it will hit the ball tap 40.

  Conventionally, even with a low tank facility of the same model, it is necessary to manufacture an outer tank and an inner tank for a right handle and an outer tank and an inner tank for a left handle, which are expensive.

  An object of the present invention is to provide a low tank facility that can share at least an inner tank for a right handle and a left handle, and can reduce costs.

A row tank facility according to the present invention (Claim 1) is a row tank facility installed on the upper surface of the rear part of a Western-style toilet, comprising an outer tank and an inner tank disposed in the outer tank, and a float at the bottom of the inner tank. A valve seat and a valve body of the valve device are arranged, a ball tap is attached to the upper portion of the inner tank, a handle of the float valve device is attached to an upper portion of a side surface of the outer tank, and a shaft connected to the handle is connected to the inner tank In the low tank facility extending into the inner tank through the upper side of the side portion, each of the left and right side surfaces of the inner tank is provided with a recess that is recessed into the center side of the inner tank, on the right side of the recess of the left face and said right side of said left side of the recess, the attachment portion of the ball tap each provided It is an feature.

  The low tank facility according to claim 2 is characterized in that, in claim 1, the upper ends of the left and right side portions of the inner tank are each provided with a notch-like portion through which the shaft of the handle can pass. is there.

Low tank equipment according to claim 3, in claim 1 or 2, wherein the outer tank is referred planar view shape lateral pairs, the valve seat of the float valve device is arranged in the front and rear and right and left of the center of the outer tank It is characterized by that.

  According to a fourth aspect of the present invention, the low tank facility according to the third aspect is characterized in that a handle of the float valve device is attached to an intermediate position in the front-rear direction of the upper portion of the side surface of the outer tank.

  The low tank facility according to claim 5 is a low tank facility installed on a rear upper surface of a Western-style toilet, and includes an outer tank and an inner tank disposed in the outer tank, and is provided at the center in the left-right direction at the bottom of the inner tank. A float valve device attachment port is provided, and a valve seat member of the float valve device is attached to the float valve device attachment port. The valve seat member has an outflow cylindrical portion protruding downward, and an upper portion of the inner tank. A ball tap is attached to the upper side of the outer tank, and a handle of the float valve device is attached to the upper portion of the outer tank. A shaft connected to the handle extends into the inner tank through the upper side of the inner tank. In the low tank facility, the float valve device attachment port and the valve seat member extend in the front-rear direction of the Western-style toilet, and the valve seat member is Even if the front and rear directions are reversed, it can be attached to the float valve device mounting port, and when the inner tank is turned 180 ° with respect to the outer tank, The position with respect to the tank is the same as the position of the outflow tube portion when the inner tank is installed with the direction being positive.

  In the low tank facility according to claim 1, since the ball tap mounting portions are provided on both the left side surface and the right side surface of the inner tank, the handle is provided on the outer tank provided on either the left side surface or the right side surface. In contrast, the same inner tank can be installed.

In the low tank facility according to claim 2, since the notched portion through which the handle shaft can pass is provided at the upper ends of the left and right side portions of the inner tank, the handle is provided on either the left side surface or the right side surface of the outer tank. Even in this case, the height of the inner tank can be increased .

In the low tank equipment 請 Motomeko 5, even if the front and rear, right and left reversed by turning 180 ° the inner tank, may be unchanged the position of the outflow tube portion. Therefore, even when the low tank facility is installed on the toilet as either the left handle type or the right handle type, the low tank facility can be disposed at the same position without being displaced forward and backward.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows a state in which a low tank facility according to an embodiment of the invention of claims 1 and 2 is used as a right handle type. FIG. 1 (a) is a horizontal sectional view of this low tank facility, and FIG. Is a front longitudinal sectional view. FIG. 2 shows a left-handle type low tank facility using the inner tank of the low tank facility of FIG. 1, (a) a horizontal sectional view of this low tank facility, and (b) a front longitudinal sectional view. It is.

  The low tank facility 10A shown in FIG. 1 has an inner tank 14A disposed in a right handle type outer tank 12R, and the low tank facility 10B shown in FIG. An inner tank 14A having the same product number as the one is arranged.

  In the right handle type outer tank 12R, a mounting hole 12b of the handle device 30 is provided on the front side of the right side surface (right side surface) on the front side (the tank front side rather than the middle in the front-rear direction). In the left handle type outer tank 12L, the mounting hole 12b is provided on the front side of the upper part of the left side surface (left side surface) when facing the front. A column 31 of the handle device 30 is inserted into the mounting hole 12b and fixed by a nut 32, and a handle shaft 33 is inserted into the column 31. A handle 36 is fixed to the base end side of the handle shaft 33 (outside of the outer tanks 12L and 12R).

  In this embodiment, as shown in FIG. 1 (a) and FIG. 2 (a), the inner tank 14A has a crossing portion between each of the left and right side surfaces and the back side of the inner tank 14A. The recesses are recessed into the center, and mounting holes 50L and 50R for the ball tap 40 are provided on the left-facing surface of the left-side recess and the right-facing surface of the right-side recess, respectively.

  Further, notches that allow the handle shaft 33 to pass into the inner tank 14A are respectively provided at the upper ends of the left side surface and the right side surface of the inner tank 14A (the region of each side surface on the tank front side with respect to the recess). The shaped portions 52L and 52R are provided. The mounting hole 12b of the right handle type outer tank 12R faces the right notch 52R, and the mounting hole 12b of the left handle type outer tank 12L faces the left notch 52L.

  In this embodiment as well, the outflow cylindrical portion 22 as a water outlet is projected downward from the bottom of the inner tank 14A, and the outflow cylindrical portion 22 is open on the bottom surface of the outer tanks 12L and 12R ( (Not shown, see FIG. 11) and protrudes below the outer tanks 12L, 12R. The outer tanks 12L and 12R and the inner tank 14A are connected by tightening the nut 24 into the outflow cylinder portion 22.

  A valve seat member 25 of the float valve device 20 is fixed to the inner peripheral edge of the upper end of the outflow cylindrical portion 22, and a float valve body 26 is seated on the valve seat member 25. Further, an overflow pipe 28 is provided so as to continue to the valve seat member 25 and rises slightly above the stored water level in the inner tank 14A. In this embodiment, by rotating the valve seat member 25, the overflow pipe 28 can be disposed on either the left side or the right side of the float valve device 20.

  In the right handle type low tank facility 10A, the handle shaft 33 enters the inner tank 14A through the notch 52R on the right side surface of the inner tank 14A. Also in this embodiment, the distal end side of the handle shaft 33 is bent in an L shape, and the float valve body 26 is connected to the distal end side via a chain 34.

  Further, the ball tap 40 is attached to the attachment hole 50L on the left side surface of the inner tank 14A. Specifically, the base end side of the main body of the ball tap 40 is inserted into the mounting hole 50L from the inner side of the inner tank 14A, and is fixed by a fixture (reference number omitted) from the outer side of the inner tank 14A.

  The water supply hose 47 connected to the ball tap 40 is routed downward in the recess on the left side surface of the inner tank 14A, and passes through a hose insertion port (not shown) provided on the left rear side of the bottom of the outer tank 12R. The outer tank 12 </ b> R is drawn out and connected to the stop cock 48.

  The overflow pipe 28 is disposed on the left side of the float valve device 20 (the valve seat member 25).

  On the other hand, in the left handle type low tank facility 10 </ b> B, the handle shaft 33 enters the inner tank 14 </ b> A through the notch 52 </ b> L on the left side surface of the inner tank 14 </ b> A, and the tip end side of the float valve body 26 via the chain 34. It is connected with.

  Further, the ball tap 40 is attached to the attachment hole 50R on the right side surface of the inner tank 14A. The mounting structure of the ball tap 40 in the mounting hole 50R is the same as the mounting structure in the mounting hole 50L described above. The water supply hose 47 connected to the ball tap 40 is routed downward in the recess on the right side surface of the inner tank 14A, and passes through a hose insertion port (not shown) provided on the right rear side of the bottom of the outer tank 12L. The outer tank 12L is pulled out and connected to the water stop cock 48.

  The overflow pipe 28 is disposed on the right side of the float valve device 20.

  The other configurations of these low tank facilities 10A and 10B are the same as those of the above-described low tank facility 10 in FIGS. 9 to 12. In FIGS. 1 and 2, the same reference numerals as those in FIGS. 9 to 12 denote the same parts. ing.

  In this embodiment, the inner tank 14A has mounting holes 50R and 50L for the ball tap 40 on both the right side surface and the left side surface thereof, so that the inner tank 14A is connected to the right handle type outer tank 12R. It can be installed on either of the left handle type outer tanks 12L.

  Further, in this embodiment, notched portions 52R and 52L through which the handle shaft 33 can pass are provided at the upper ends of both the right side surface and the left side surface of the inner tank 14A. Regardless of whether it is installed in the handle type outer tank 12R or the left handle type outer tank 12L, the height of the inner tank 14A can be increased.

FIG. 3 shows a low tank facility according to a reference example using a right handle type. FIG. 3 (a) is a horizontal sectional view of the low tank facility, and FIG. 3 (b) is a front longitudinal sectional view. FIG. 4 is a view showing the low tank facility of FIG. 3 used as a left handle type. FIG. 4 (a) is a horizontal sectional view of the low tank facility, and FIG. 4 (b) is a front longitudinal sectional view.

The low tank facility 10C has an inner tank 14C disposed in an outer tank 12C. As shown in FIGS. 3 (a) and 4 (a), the outer tank 12C has a plan view shape (a shape of a projected image on a horizontal plane) that is bilaterally symmetric and longitudinally symmetric. In the outer tank 12C, an insertion opening (not shown) for the discharge cylinder portion 22 of the inner tank 14C is provided in the front and rear and the center of the left and right of the bottom portion. Further, an attachment hole 12b of the handle device 30 is provided at the upper part of one side surface of the outer tank 12C. In this reference example , the mounting hole 12b is disposed at an intermediate position in the front-rear direction above the side surface.

In this reference example , an outflow cylindrical portion 22 as a water discharge port projects downward from the front and rear of the bottom of the inner tank 14C and from the center of the left and right, and this outflow cylindrical portion 22 is provided at the bottom of the outer tank 12C. It protrudes below the outer tank 12C through the central opening. And the outer tank 12C and the inner tank 14C are connected by tightening the nut 24 in this outflow cylinder part 22. FIG.

  The valve seat member 25 of the float valve device 20 is fixed to the inner periphery of the upper edge of the outflow cylindrical portion 22, and the float valve body 26 is seated on the valve seat member 25. That is, in the low tank facility 10C, the valve seat member 25 is disposed at the front and rear and the center of the left and right of the bottom surface of the outer tank 12C.

Also in this reference example , a pair of bolts 29 project from the bottom outer surface of the outer tank 12C downward. These bolts 29 are provided on both the left and right sides of the outflow cylinder portion 22, and are respectively arranged in the middle of the bottom portion of the outer tank 12 </ b> C in the front-rear direction and at the same distance from the center of the outflow cylinder portion 22. Has been.

Also in this reference example , the intersection of one side surface and the back surface of the inner tank 14C is a recess that is recessedly fitted toward the center side of the inner tank 14C, and on the upper part of the lateral surface facing this recess, A mounting hole 50C for the ball tap 40 is provided. The mounting structure of the ball tap 40 to the mounting hole 50C is the same as the mounting structure of the inner tank 14A to the mounting holes 50R and 50L.

  Further, a notch 52C that allows the shaft 33 of the handle device 30 to pass through is provided at the upper end of the other side surface of the inner tank 14C. The mounting hole 12b of the outer tank 12C faces the notch 52C.

Also in this reference example , the column 31 of the handle device 30 is inserted into the mounting hole 12b and fixed by the nut 32, and the handle shaft 33 is inserted into the column 31. A handle 36 is fixed to the base end side of the handle shaft 33 (outside of the outer tank 12C). The handle shaft 33 enters the inner tank 14 </ b> C through the notch 52 </ b> C, and the float valve body 26 is connected to the front end side of the handle shaft 33 via the chain 34.

  Other configurations of the low tank facility 10C are the same as those of the low tank facility 10 shown in FIGS.

  In the low tank facility 10C, the shape of the outer tank 12C in plan view is bilaterally symmetric and longitudinally symmetric, and the valve seat member 25 of the float valve device 20 (the outflow cylindrical portion 22 of the inner tank 14C) is the outer tank. Since the tank 12C is disposed at the front and rear and at the center of the left and right of the bottom of the tank 12C, the outer tank 12C can be installed 180 degrees by turning 180 °. Therefore, this low tank facility 10C can be used for both the right handle and the left handle.

Further, in this reference example , since the mounting hole 12b of the handle device 30 is disposed at the intermediate position in the front-rear direction of the side surface of the outer tank 12C, the handle 36 is disposed on either the right side surface or the left side surface of the outer tank 12C. However, it is not located too far behind.

  FIG. 5 shows a state in which the low tank facility according to the embodiment of the invention of claim 5 is used as a right handle type. FIG. 5 (a) is a horizontal sectional view of the low tank facility, and FIG. It is a longitudinal cross-sectional view. 6 is a cross-sectional view taken along line VI-VI in FIG. 5, and FIG. 7 is an exploded perspective view of the bottom of the low tank facility. FIG. 8 is a horizontal sectional view of a left handle type low tank facility using the inner tank.

  The low tank facility 10D shown in FIG. 5 has an inner tank 14D arranged in a right handle type outer tank 12R ′, and the low tank facility 10E shown in FIG. 8 has the low tank facility 10D in the left handle type outer tank 12L ′. An inner tank 14D having the same product number as that of 10D is arranged.

  In this embodiment, in any of the outer tanks 12R ′ and 12L ′, an opening through which an outflow cylindrical portion 22D as a water outlet of the inner tank 14D is inserted in front of the left and right and front and rear centers of the bottom portion. 12a '(Fig. 6) is arranged. In the state where the inner tank 14D is disposed in each of the outer tanks 12R ′ and 12L ′, the left and right and front and rear centers of the bottom of each outer tank 12R ′ and 12L ′ are the left and right and front and rear centers of the bottom of the inner tank 14D. Is almost identical. Other configurations of the outer tanks 12R 'and 12L' are the same as those of the outer tanks 12R and 12L shown in Figs.

  In the center of the left and right of the bottom portion of the inner tank 14D, an oval float valve device attachment port 60 that extends long in the front-rear direction is formed. In this embodiment, as shown in FIG. 7, the valve seat member 25 </ b> D of the float valve device 20 </ b> D has an oval plate-like pedestal portion 61 that fits in the float valve device attachment port 60. The outflow tube portion 22D protrudes downward from the lower surface of the half portion of the pedestal portion 61 in the major axis direction. The inner hole of the outflow cylinder portion 22D passes through the pedestal portion 61 and communicates with the upper surface side of the pedestal portion 61. A seat 62 is provided around.

  From the outer periphery of the upper surface of the pedestal portion 61, a flange 61f that protrudes from the periphery of the float valve device attachment port 60 is provided. A packing 63 is disposed between the flange 61f and the peripheral edge of the float valve device attachment port 60. A packing (O-ring) 64 that seals between the inner peripheral surface of the float valve device attachment port 60 and the side peripheral surface of the pedestal portion 61 is attached to the side peripheral surface of the pedestal portion 61.

  Also in this embodiment, the intersection of one side surface and the back surface of the inner tank 14D is a recess that is recessedly fitted toward the center side of the inner tank 14D, and is formed at the upper portion of the lateral surface facing the recess. A mounting hole 50D for the ball tap 40 is provided. The mounting structure of the ball tap 40 to the mounting hole 50D is the same as the mounting structure of the inner tank 14A to the mounting holes 50R and 50L.

  Further, a notch 52D that allows the shaft 33 of the handle device 30 to pass through is provided at the upper end of the other side surface of the inner tank 14D.

  In the right handle type low tank facility 10D, the inner tank 14D is disposed in the outer tank 12R 'with the side surface provided with the notch-shaped portion 52D on the right side. The notch 52D faces the handle device mounting hole 12b on the right side surface of the outer tank 12R '.

  Also in this embodiment, the column 31 of the handle device 30 is inserted into the mounting hole 12 b and fixed by the nut 32, and the handle shaft 33 is inserted into the column 31. The handle shaft 33 enters the inner tank 14D through the notch 52D. The float valve body 26 is connected to the distal end side of the handle shaft 33 via a chain 34. A handle 36 is attached to the base end side of the handle shaft 33 (outside of the outer tank 12R ').

  The opening 12 a ′ at the bottom of the outer tank 12 </ b> R ′ overlaps the float valve device attachment port 60 so as to be shifted to the front side from the center in the long axis direction (front-rear direction) of the float valve device attachment port 60. Accordingly, the pedestal portion 61 is fitted into the float valve device attachment port 60 with the outflow cylindrical portion 22D being the front side. As a result, the outflow cylindrical portion 22D is inserted into the opening 12a ', and the tip end side projects below the outer tank 12R'. Then, when the nut 24 is tightened on the distal end side of the outflow cylinder portion 22D, the pedestal portion 61 is fixed to the outer tank 12R ′, and the bottom portion of the inner tank 14D (the peripheral portion of the float valve device attachment port 60) is formed. It is clamped by the flange 61f and the bottom of the outer tank 12R ′.

  On the other hand, in the left handle type low tank facility 10E, the inner tank 14D has an outer tank with the side surface provided with the notch-shaped portion 52D on the left side (that is, reverse to the front and rear as used in the right handle type low tank facility 10D). 12L ′. In this case, the notch 52D faces the handle device mounting hole 12b on the left side surface of the outer tank 12L '.

  Also in this left-handle type low tank facility 10E, the opening 12a ′ at the bottom of the outer tank 12L ′ is in front of the float valve device mounting port 60 from the center in the long axis direction of the float valve device mounting port 60 (low tank facility 10D, the pedestal portion 61 is fitted into the float valve device attachment port 60 with the outflow cylinder portion 22D being the front side. As a result, the outflow cylindrical portion 22D is inserted into the opening 12a ', and the tip end side projects below the outer tank 12L'. Then, when the nut 24 is tightened on the distal end side of the outflow cylindrical portion 22D, the pedestal portion 61 is fixed to the outer tank 12L ′, and the bottom portion of the inner tank 14D (the peripheral portion of the float valve device attachment port 60) is formed. It is sandwiched between the flange 61f and the bottom of the outer tank 12L ′.

  In this embodiment, the position of the outflow cylinder 22D when the front-rear direction of the inner tank 14D and the front-rear direction of the float valve device 20D are reversed is the same as the direction of the inner tank 14D and the float valve device 20D. Same as positive. Therefore, regardless of whether the inner tank 14D is installed in either the right handle type outer tank 12R 'or the left handle type outer tank 12L', the outflow cylindrical portion 22D can be inserted into the opening 12a '.

  Each of the above embodiments shows an example of the present invention, and the present invention is not limited to the above embodiment.

It is a figure which shows the state which used the low tank equipment which concerns on embodiment of invention of Claim 1, 2 as a right handle type. It is a figure which shows the left handle type low tank equipment using the inner tank of the low tank equipment of FIG. It is a figure which shows what used the low tank equipment which concerns on a reference example as a right handle type. It is a figure which shows what used the inner tank of the low tank installation of FIG. 3 as a left handle type. It is a figure which shows what used the low tank equipment which concerns on embodiment of invention of Claim 5 as a right handle type. It is sectional drawing which follows the VI-VI line of FIG. It is a disassembled perspective view of the inner tank bottom part of the low tank equipment of FIG. It is a figure which shows what used the low tank installation of FIG. 5 as a left handle type. It is a front view of the double type low tank equipment concerning a conventional example. It is a front longitudinal cross-sectional view of the double type low tank equipment of FIG. It is the XX sectional view taken on the line of FIG. It is a horizontal sectional view of the double type low tank facility of FIG.

10, 10A, 10B, 10C, 10D Low tank equipment 12, 12R, 12L, 12C, 12D Outer tank 12b Handle device mounting hole 14, 14A, 14C Inner tank 20, 20D Float valve device 22, 22D Outflow cylinder 25, 25D Valve seat member 26 Float valve body 28 Overflow pipe 30 Handle device 33 Handle shaft 36 Handle 40 Ball tap 50R, 50L, 50C, 50D Ball tap mounting hole 52R, 52L, 52C, 52D Notch-shaped portion 60 Float valve device mounting port 61 Base portion 62 Valve seat

Claims (5)

A low tank facility installed on the rear upper surface of a Western-style toilet,
An outer tank and an inner tank disposed in the outer tank;
A valve seat and a valve body of a float valve device are disposed at the bottom of the inner tank,
A ball tap is attached to the top of the inner tank,
In the low tank facility in which the handle of the float valve device is attached to the upper part of the side surface of the outer tank, and the shaft connected to the handle extends into the inner tank through the upper side of the side of the inner tank.
Each of the left and right side surfaces of the inner tank is provided with a recess that is recessed into the center side of the inner tank,
Low tank equipment, characterized in that on the right side of the recess of the left face and said right side of said left side of the recess, the attachment portion of the ball tap, respectively are provided.   2. The low tank facility according to claim 1, wherein a cutout portion through which the shaft of the handle can pass is provided at the upper ends of the left and right side portions of the inner tank. According to claim 1 or 2, wherein the outer tank is referred planar view shape lateral pairs,
A low tank facility characterized in that valve seats of the float valve device are arranged at the front and rear and left and right centers of the outer tank.   The low tank facility according to claim 3, wherein a handle of the float valve device is attached to an intermediate position in the front-rear direction of the upper part of the side surface of the outer tank. A low tank facility installed on the rear upper surface of a Western-style toilet,
An outer tank and an inner tank disposed in the outer tank;
A float valve device mounting port is provided at the center in the left-right direction at the bottom of the inner tank,
A valve seat member of the float valve device is attached to the float valve device attachment port,
The valve seat member has an outflow cylinder projecting downward,
A ball tap is attached to the top of the inner tank,
In the low tank facility in which the handle of the float valve device is attached to the upper part of the side surface of the outer tank, and the shaft connected to the handle extends into the inner tank through the upper side of the side of the inner tank.
The float valve device mounting port and the valve seat member extend in the front-rear direction of the Western-style toilet,
The valve seat member can be attached to the float valve device mounting opening even if the front and rear directions are reversed.
When the inner tank is rotated 180 ° with respect to the outer tank and installed upside down, the position of the outflow cylinder with respect to the outer tank is the position of the outflow cylinder when the inner tank is oriented positive. Low tank equipment characterized by the same location.

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