JP6712404B2 - Flush toilet device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet device, and more particularly to a flush toilet device that flushes a toilet with flush water supplied by a jet pump action to discharge dirt.

2. Description of the Related Art Conventionally, as a flush toilet device that flushes a toilet bowl with flush water supplied by a jet pump action to discharge dirt, for example, as described in Patent Document 1, flush water supplied from a water supply source. It is known that a tank, which is partially stored and which supplies flush water to the toilet body, is installed on the upper surface of the toilet body.
In such a conventional flush toilet device, since the jet pump unit for inducing the jet pump action and other related parts are internally provided in the tank, in order to secure the jet pump performance by the tank alone, It is desirable that the connection between the tank and the toilet body be made outside the tank.

JP, 2014-190065, A

However, in recent years, due to diversification of design of flush toilet device and water saving, the tank is arranged at a relatively low position on the rear side of the toilet body, so that the height position of the upper end of the tank is set to a low position. The so-called "low silhouette type" tank, which suppresses the height of the flush toilet device as a whole, is used. Regarding such a low silhouette type tank, the width in the front-back direction (depth direction) and the left-right direction In order to reduce the dead space, it is unavoidable to enclose the periphery of the connecting portion between the tank and the toilet body in order to reduce the dead space.
In addition, in the design of the tank and the toilet body that surrounds the periphery of the connection portion between the tank and the toilet body in this way, when the worker assembles the tank to the toilet body, the operator should touch the connection portion between the tank and the toilet body. Since it will not reach directly and it will be difficult for construction to be performed by direct access by the operator, the operation to connect the tank and the toilet body in a watertight manner must be performed indirectly by some means or method. There is a problem that it will be difficult to secure.
Furthermore, it is conceivable to access the connection between the tank and the toilet body from the inside of the tank, but since the space inside the tank is occupied by many related parts other than the jet pump unit, the tank can be made smaller. The smaller the space inside the tank, the more difficult it is for operators to directly access it.Therefore, it is difficult to directly perform the connecting operation to secure the watertightness in the vicinity of the connection inside the tank. There is a problem.

Therefore, the present invention has been made in order to solve the above-mentioned problems of the prior art, and when connecting the tank to the toilet body in a watertight manner, in the toilet body-side connecting portion and the tank-side connecting portion, respectively. On the other hand, it is an object of the present invention to provide a flush toilet device that can easily and water-tightly connect a tank to the toilet body even when the surrounding area is covered by an inaccessible worker. I am trying.

In order to achieve the above-mentioned object, the present invention is a flush toilet device for cleaning a toilet bowl with cleaning water supplied by a jet pump action to discharge dirt, and a bowl portion for receiving the waste material and the bowl portion. The toilet body having a water conduit for guiding the cleaning water to the toilet body, and the cleaning water supplied from the water supply source, which is assembled from above at a predetermined installation position on the rear side of the bowl portion of the toilet body. A tank that stores a portion of the water and supplies flush water to the water conduit of the toilet body, and a toilet body-side connection portion that is provided in the water conduit of the toilet body and connected to the tank, one end of which is The toilet body main body side connection portion which is provided integrally with or separately from the water conduit and forms the toilet body main body side connection pipe whose other end is directed upward, and the toilet body main body side connection which is provided on the front side of the tank. A tank-side connecting portion that is connected to a portion, and that forms a tank-side connecting pipeline that extends upward from one end that is capable of communicating with the toilet-main-body-side connecting pipeline; and the toilet-body-side connecting portion. And a sealing member provided so as to be watertightly connectable between the tank and the tank-side connecting portion, and the tank is a jet pump unit that is arranged in a state in which at least a part of the tank is submerged in water. A jet nozzle for injecting cleaning water supplied from the water supply source, and a throat having a suction port formed at one end and an outlet for discharging the cleaning water toward the water conduit of the toilet body at the other end A pipe, and the jet nozzle jet-injects the washing water from the suction port of the throat pipe toward the inside, so that the flow rate of the washing water flowing in the throat pipe is the washing water jetted from the jet nozzle. The jet pump unit is provided inside the tank and the jet pump unit that induces a jet pump action that increases the flow rate to supply an increased flow rate of flush water toward the water conduit of the toilet body from the throat pipe. A water supply valve for stopping the cleaning water supplied from a water supply source to the jet nozzle, and formed so as to project from the front surface of the tank rearward toward the inside of the tank and extend upward from the bottom surface of the tank. And a throat pipe side connecting portion forming an outflow port of the throat pipe is connected to the step portion, and a connection port communicating with the tank side connecting pipe line is formed. The upper end portion of the stepped portion is provided by an operator when the tank is assembled to the predetermined installation position from above from the upper side. It is located above the full water level in the tank so that a watertight connection operation for connecting the tank side connection section in a watertight manner is possible, and the toilet body side connection section and the tank side connection section are When the tank is connected to the toilet body in a watertight manner, the surrounding area is covered so that the operator cannot directly access it, and the stepped portion is provided on the tank side by performing the watertight connection operation. The connecting portion is characterized in that it can be connected in a watertight manner to the toilet body-side connecting portion via the seal member.
In the present invention thus configured, when the tank is watertightly connected to the toilet body by the operator, the tank is assembled from the upper side to a predetermined installation position on the rear side of the bowl portion of the toilet body from the upper side. In addition, even when the surroundings of the toilet body-side connecting portion and the tank-side connecting portion are covered so that the workers cannot directly access them, the upper end of the step inside the tank is By being located above the full water level in the tank, the operator can easily and directly access the upper end of the step in the tank from above the tank.
Therefore, an operator who directly accesses the upper end of the step inside the tank can simply perform a watertight connection operation for water-tightly connecting the toilet body-side connecting portion and the tank-side connecting portion with respect to the upper end of the step inside the tank. It is possible to reliably connect the tank-side connecting portion to the toilet body-side connecting portion via the seal member in a watertight manner, and to easily connect the tank to the toilet body in a watertight manner.

In the present invention, preferably, the step is the only step formed in the tank so as to be located above the lowest water level in the tank.
In the present invention thus configured, the step in the tank is the only step formed in the tank so as to be located above the lowest water level in the tank. Since the space occupied by the parts can be suppressed, the entire tank can be downsized.

In the present invention, preferably, the step portion is formed in a central portion in the left-right direction in the tank, and the water supply valve and the throat pipe are capable of the watertight connection operation with respect to a part of an upper end portion of the step portion. It is arranged so as to be offset to one side area in the left-right direction in the tank.
In the present invention thus configured, the step portion in the tank is formed in the center portion in the left-right direction in the tank, and the watertight connection operation can be performed on a part of the upper end portion of the step portion in the tank. Since the water supply valve and the throat pipe are arranged on one side in the left-right direction inside the tank, the operator can assemble the tank from above from a predetermined installation position behind the water conduit of the toilet body. When the tank side connection part is connected to the toilet body side connection part, when an operator who directly accesses the upper end part of the step part in the tank performs a watertight connection operation on the upper end part of the step part in the tank. Operation space can be secured.
Therefore, the operator can reliably perform a watertight connection operation on a part of the upper end of the step in the tank, and reliably connect the tank-side connection portion to the toilet body-side connection portion through the seal member. Then, the tank can be reliably connected to the toilet body in a watertight manner.

In the present invention, preferably, the upper end portion of the stepped portion is formed in an area in the width direction on the left and right sides thereof, an operation area surface on which the watertight connection operation is possible, the throat pipe side connection portion, and the vicinity thereof. A front region surface formed between the front wall portion of the tank and smaller than the area of the operation region surface.
In the present invention thus configured, the upper end portion of the step portion in the tank is provided in the left and right widthwise regions and is provided with the operation region surface capable of watertight connection operation, and the throat pipe side connection is made. By providing a front region surface formed between the portion and the front wall portion of the tank adjacent thereto and smaller than the area of the operation region surface, the operation region surface of the upper end of the step in the tank, Since it can be set relatively large without interfering with the throat pipe side connection portion, it is possible to easily perform the watertight connection operation on the operation area surface of the upper end portion of the step portion.
Further, since the front region surface of the upper end of the step in the tank can be set to be relatively small and the dead space in the tank can be minimized, the entire tank can be downsized.

In the present invention, preferably, an upper end portion of the stepped portion is provided with an operation area surface capable of performing the watertight connection operation, and each of the seal member, the tank side connection portion, and the toilet body side connection portion is , The tanks are arranged so as to overlap with each other vertically below the step in a state where the tanks are assembled to the predetermined installation positions from above, and the watertight connection operation is performed such that the tanks are installed at the predetermined installation positions. This is a pushing operation in which the operation area surface is pushed downward by the worker when assembled from the upper side, and the step portion is such that the tank side connecting portion is connected to the toilet body side via the sealing member by this pushing operation. It is pushed into the portion to enable the tank and the toilet body to be connected in a watertight manner.
In the present invention thus configured, with respect to each of the seal member, the tank-side connecting portion, and the toilet body-side connecting portion, the tank is assembled at a predetermined installation position from above and below the step in the vertical direction. Are placed so that they overlap with each other, and the operation area surface is pushed downward, so that the tank-side connection part is pushed into the toilet body-side connection part through the seal member, and the tank and the toilet body can be connected in a watertight manner. Therefore, when the operator pushes the operation area surface of the step inside the tank when the tank is assembled to the predetermined installation position from the upper side, the step vertically below the step. It is possible to efficiently apply a pushing force to each of the seal member, the tank-side connecting portion, and the toilet body-side connecting portion, which are overlapped with each other, so that they can be reliably water-tightly connected to each other.
Therefore, the pushing force of the step portion required for the pushing operation at the time of the watertight connection of the seal member, the tank side connecting portion, and the toilet body side connecting portion can be completed with a relatively small force, so that the pushing operation is directly performed. Since the stepped portion itself to be performed can also be made small, the entire tank can be made small.

In the present invention, preferably, when the operation area surface of the upper end portion of the step portion is pushed downward in a state where the tank is assembled to the predetermined installation position from above, the toilet body side connection is made. The force dispersion unit is provided so as to be able to support the unit and can disperse the pushing force acting from the tank side connection unit to the toilet body side connection unit.
In the present invention thus configured, when the operation area surface of the upper end portion of the step portion is pushed downward in a state where the tank is assembled at a predetermined installation position from the upper side, the toilet body side connecting portion is The tank-side connecting portion is supported from above from the toilet body-side connecting portion by further including a force distributing portion that is capable of supporting and disperses the pushing force acting on the toilet body-side connecting portion from the tank-side connecting portion. Even if an excessive pushing force is applied from the tank side connecting part to the toilet body side connecting part when the pushing operation is performed downward, since this pushing force can be dispersed by the force distributing part, the toilet body side connecting part Can be prevented from being damaged.

According to the flush toilet device of the present invention, when the tank is watertightly connected to the toilet body, the peripheries of the toilet body-side connecting portion and the tank-side connecting portion are direct to the operator. The tank can be easily and watertightly connected to the body of the toilet even when it is inaccessibly covered.

1 is a schematic perspective view of a flush toilet device according to a first embodiment of the present invention. FIG. 3 is an exploded perspective view of the flush toilet device according to the first embodiment of the present invention. FIG. 3 is a central side cross-sectional view taken along the line III-III in FIG. 1. FIG. 4 is a front sectional view taken along line IV-IV in FIG. 1. FIG. 3 is a plan view showing the internal structure of the flush water tank device in the flush toilet device according to the first embodiment of the present invention. It is a block diagram showing the basic composition of the flush water tank device of the flush toilet device by a 1st embodiment of the present invention. FIG. 3 is an enlarged view of part A in FIG. 2. It is a B section enlarged view of FIG. FIG. 3 is a rear view of the flush toilet device according to the first embodiment of the present invention. FIG. 10 is an enlarged schematic perspective view of a fixing device for fixing the water storage tank of the flush water tank device in the flush toilet device according to the first embodiment of the present invention shown in FIG. 9 to the toilet body. FIG. 3 is a schematic view of a fixing device that fixes the water storage tank of the flush water tank device in the flush toilet device according to the first embodiment of the present invention to the toilet body. It is a perspective view showing a state when confirming the connection state of the toilet body and the water storage tank in the flush toilet device according to the first embodiment of the present invention. FIG. 4 is a schematic cross-sectional view showing a state before the start of construction in which the water storage tank of the flush water tank device is not assembled at a predetermined installation position on the rear side of the toilet body in the flush toilet device according to the first embodiment of the present invention. After the pre-installation state shown in FIG. 13A, before the water tank of the flush water tank device of the flush toilet device according to the first embodiment of the present invention is assembled at a predetermined installation position on the rear side of the toilet body, the toilet body FIG. 3 is a schematic cross-sectional view showing a first construction state in which only the spud is watertightly connected to the inflow port of the water conduit of FIG. After the first construction state shown in FIG. 13B, before the water tank of the flush water tank device of the flush toilet device according to the first embodiment of the present invention is assembled at a predetermined installation position on the rear side of the toilet body, the toilet bowl is installed. It is a schematic sectional drawing which shows the 2nd construction state in which the connecting pipe member was watertightly connected to the spud which was watertightly connected to the inlet of the water conduit of the main body. After the second construction state shown in FIG. 13C, the tank side connection portion of the water storage tank of the flush water tank device of the flush toilet device according to the first embodiment of the present invention is water-tightly connected to the connection pipe member to store water. It is a schematic sectional drawing which shows the 3rd construction state with which the tank was assembled from the upper side to the predetermined installation position of the back side of the toilet body. In the state between the second construction state shown in FIG. 13C and the third construction state shown in FIG. 13D, the lower and upper fin portions of the fin packing of the flush toilet apparatus according to the first embodiment of the present invention are FIG. 6 is a schematic front cross-sectional view showing a state immediately before being inserted into a connection pipe line of a connection pipe member. FIG. 14A is a schematic front cross-sectional view showing an inserting state when only the lower fin part of the fin packing of the flush toilet device according to the first embodiment of the present invention is inserted into the connection conduit of the connection pipe member from the state shown in FIG. 14A. Is. When both the lower fin part and the upper fin part of the fin packing of the flush toilet device according to the first embodiment of the present invention are inserted from the state shown in FIG. 14B to the insertion completion position in the connection pipe line of the connection pipe member. FIG. 4 is a schematic front sectional view showing a state in which the insertion is completed. A diagram qualitatively showing the relationship between the insertion distance after contact and the contact resistance in the fin packing of the flush toilet device according to the first embodiment of the present invention, and the fin packing of the flush toilet device according to the first embodiment of the present invention. It is the figure which compared with the diagram which qualitatively shows the relationship of the insertion distance and contact resistance in a modification. FIG. 5 is a front sectional view similar to FIG. 4, showing a flush toilet device according to a second embodiment of the present invention. In the flush toilet device according to the third embodiment of the present invention, it is a schematic perspective view of the toilet body in a state before the water storage tank of the flush water tank device is assembled at a predetermined installation position, as seen from the back side.

Hereinafter, a flush toilet device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.
First, the basic structure of the flush toilet device according to the first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic perspective view of a flush toilet device according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view of the flush toilet device according to a first embodiment of the present invention, and FIG. FIG. 3 is a central side cross-sectional view taken along the line III-III in FIG. 1.

First, as shown in FIGS. 1 to 3, a flush toilet device 1 according to a first embodiment of the present invention is installed at a toilet body 2 made of earthenware and at a predetermined installation position on the rear side of the toilet body 2. In addition, a flush water tank device 4 for supplying flush water to the toilet body 2 is provided. This flush toilet device 1 is, for example, a so-called water-saving type flush flush toilet which is washed with 6.0 liters or less of wash water, preferably 3.0 liter to 4.8 liter of wash water. is there.
Next, as shown in FIG. 3, the toilet body 2 is provided with a bowl portion 6 provided on the front side thereof to receive dirt, and a rim portion 8 formed on the upper edge of the bowl portion 6.
Further, an inlet 10a of the drain trap pipeline 10 is opened at the bottom of the bowl portion 6 of the toilet body 2, and the drain trap pipeline 10 extends obliquely downward and rearward from the inlet 10a and then diagonally upward. Further, it extends to the apex on the rear side, then extends downward, and is connected to a drain socket (not shown) installed on the floor surface.
In addition, as shown in FIG. 3, a guiding portion for guiding the cleaning water supplied from the cleaning water tank device 4 to the bowl portion 6 is provided in the rim portion 8 of the toilet body 2 from the rear side to the side of the bowl portion 6. A water passage 14 is formed, and a spout 16 for discharging the wash water in the water guide passage 14 is formed in a part of the rim portion 6.
In the flush toilet device 1 according to the present embodiment, a form of a flush toilet that discharges filth by a drop in the height direction will be described. However, siphon action is used to suck filth in the bowl 6 and drain it. It may be a so-called siphon type toilet bowl that discharges from the trap conduit 10 to the outside at once, or a toilet bowl of any other form is applicable.
Further, in the flush toilet apparatus 1 according to the present embodiment, drainage discharged from the drain trap pipeline 10 is discharged to a drain pipeline (not shown) under the floor, but a drain socket (not shown) is adopted. Alternatively, a drain socket (not shown) for discharging the drainage discharged from the drain trap pipe 10 to a drain pipe (not shown) behind the flush toilet device 1 is adopted. It may be in the form.

Next, the wash water tank device 4 will be described in detail with reference to FIGS. 1 to 8.
4 is a front sectional view taken along line IV-IV of FIG. 1, and FIG. 5 is a plan view showing the internal structure of the flush water tank device in the flush toilet device according to the first embodiment of the present invention. FIG. 6 is a block diagram showing the basic configuration of the flush water tank device of the flush toilet device according to the first embodiment of the present invention.
Regarding the left-right direction of the flush water tank device 4 shown in FIGS. 4 and 5, the left side in the left-right direction when viewed from the front side of the toilet body 2 is the “left side”, and the left-right direction when viewed from the front side of the toilet body 2. The right side is defined as "right side".

As shown in FIGS. 2 to 6, the flush water tank device 4 has a water supply pipe 18 whose upstream side is connected to a water supply source (not shown) such as tap water, and a rear side of the bowl portion 6 of the toilet body 2. Part of the wash water supplied from the water supply source (not shown) through the water supply pipe 18 is stored in the predetermined installation space S1 from above and the wash water is supplied to the water conduit 14 of the toilet body 2. And a water storage tank 20 which is a tank for supplying water.
Further, as shown in FIG. 5, the water storage tank 20 is formed in a flat shape that is long in the left-right direction in a plan view, and is arranged at a relatively low position on the rear side of the toilet body 2 as shown in FIG. Thus, it is a so-called low silhouette type water storage tank in which the height position of the upper end of the water storage tank 20 is low.
Further, in the flush toilet device 1 of the present embodiment, when the water tank 20 is assembled in the toilet body 2 in the predetermined installation space S1 (see FIG. 2) on the rear side of the water conduit 14, this installation space is used. The water storage tank 20 must be inserted and assembled from the open upper side of S1.
In addition, in the flush toilet device 1 of the present embodiment, basically, regardless of the construction of the flush toilet device 1 in the field, the flush toilet device 1 is opened at the rear side of the bowl portion 6 of the toilet body 2 in the factory. The storage tank 20 may be inserted into the predetermined installation space S1 from the upper side and assembled, and then the construction may be performed on site, or it may be applied in various situations.

Next, as shown in FIGS. 3 to 6, the main valve 24 is provided inside the water storage tank 20 as a water supply valve for stopping and supplying the wash water supplied from the water supply pipe 18 through the constant flow valve 22. A water supply valve device 26 including the same is installed inside, and a jet pump unit 30 (details described later) connected via a vacuum break valve 28 is installed inside the water storage tank 20 on the downstream side of the water supply valve device 26. There is.
Further, as shown in FIGS. 4 to 6, the flush water tank device 4 is provided on the left side portion of the water storage tank 20 as viewed from the front side of the toilet body 2, and is for operating the water supply valve device 26. The operation lever 32 is provided.

Next, as shown in FIGS. 4 and 6, the jet pump unit 30 is arranged in the water storage tank 20 with at least a portion submerged therein, and is supplied from a water supply pipe 34 extending from the vacuum break valve 28. A jet nozzle 36 for injecting the cleaning water is provided. Here, the vacuum break valve 28 is for sucking air from the outside to prevent negative pressure in the water supply pipe 34 from the vacuum break valve 28 to the jet nozzle 36.
In addition, as shown in FIGS. 4 and 6, the jet pump unit 30 is provided near the downstream side of the jet nozzle 36 and controls the flow path of the wash water injected from the jet nozzle 36 according to the water level in the water storage tank 20. A flow path switching valve 38 is provided for switching.
Further, as shown in FIGS. 3 to 6, the jet pump unit 30 includes a throat pipe 40 having a suction port 40a formed at one end and an outflow port 40b at the other end through which wash water flows out. .. As shown in FIG. 4, in the throat pipe 40, the pipe shape extending from the suction port 40a to the outlet 40b has, for example, an inverted U shape (or, in other words, an inverted J shape, or Gooseneck type).
Further, the jet nozzle 36 is arranged so as to face the suction port 40a of the throat pipe 40, and the suction port 40a of these throat pipe 40 and the jet nozzle 36 are always submerged in the water storage tank 20. Has become.

Further, as shown in FIG. 6, the flow path switching valve 38 causes the cleaning water jetted from the jet nozzle 36 at the time of cleaning the bowl portion 6 of the toilet body 2 to flow into the throat pipe 40 from the suction port 40 a of the throat pipe 40. The flow path 42 for flushing the toilet, which flows out from the outlet 40b toward the water conduit 14 side of the toilet body 2, and the flush water jetted from the jet nozzle 36 when the water is stored in the water storage tank 20 do not flow into the throat pipe 40. In addition, it is possible to switch to any one of the flow path 44 for tank water storage directed to the inside of the water storage tank 20 outside the throat pipe 40 depending on the water level in the water storage tank 20. As a result, when the flow path switching valve 38 is set to the toilet flushing flow path 42, the jet nozzle 36 jets the wash water from the suction port 40a of the throat pipe 40 toward the inside thereof, thereby By inducing a jet pump action to increase the flow rate of the wash water flowing in the pipe 40 over the flow rate of the wash water jetted from the jet nozzle 36, the increased flow rate of the wash water flows from the outlet 40b of the throat pipe 40 to the toilet body. It is designed to be supplied to the second water conduit 14.
That is, regarding the term “jet pump action” described in the present specification, the flow itself of the vigorous wash water jetted from the jet nozzle 36 toward the suction port 40 a of the throat pipe 40 is a pump or the like. A negative pressure that directly draws the surrounding cleaning water near the suction port 40a of the throat pipe 40, etc. is formed without depending on other mechanical elements of the throat pipe 40. This means an action of transporting the cleaning water in the water storage tank 20 sucked in to the toilet body 2 side.

It should be noted that, as shown in FIGS. 4 to 6, the water supply valve device 26 has the same structure and operation mechanism as those of the conventional one, and thus a detailed description thereof will be omitted, but the main valve 24 is a pilot type. Diaphragm valve, which can be opened and closed by the operation of a first pilot valve (not shown) that is connected to the operating lever 32 by the drive shaft 46 and is opened and closed by operating this operating lever 32. It can be opened and closed by the operation of a second pilot valve (not shown) that is opened and closed by the vertical movement of the float 48 that moves up and down according to the level of the washing water inside.

Next, FIG. 7 is an enlarged view of part A of FIG. 2, and FIG. 8 is an enlarged view of part B of FIG.
As shown in FIGS. 2 to 4, 7 and 8, a spud 50, which is a part of the toilet body side connecting portion, is watertightly connected to the inlet 14a on the rear side of the water conduit 14 of the toilet body 2. From this rear side, one end of a connecting pipe member 52, which is a part of the toilet body side connecting portion, is inserted into the spud 50 and is water-tightly connected.
In addition, as shown in FIGS. 2 to 4, 7 and 8, the connection pipe member 52 extends from the one end (front end) watertightly connected to the spud 50 to the rear side in a substantially horizontal direction, A toilet main body side connection conduit 52a, which is a bent conduit directed toward the upper side, is formed, and the other end portion (upper end portion 52b) of the connection pipe member 52 forms an open end penetrating vertically. There is.
Further, a generally annular fin packing 54, which is a sealing member, is watertightly connected to the upper end portion 52b of the connecting pipe member 52 in a state of being inserted into the toilet body side connecting pipe passage 52a from above.
Further, the fin side packing 54 is water-tightly connected to the inner peripheral side of the water tank 20 with a tank side connecting portion 56 integrally formed in the water storage tank 20 being inserted therein. The tank-side connection conduit 56a is formed inside thereof.
In addition, in this embodiment, although the spud 50 and the connection pipe member 52, which are the toilet body-side connecting portions, are separate from the water conduit 14 of the toilet body 2, a configuration will be described. There is no limitation, and the spud 50 and the connecting pipe member 52, which are the connection portions on the toilet body side, may be formed integrally with the water conduit 14 of the toilet body 2 by the same pottery or the like.
Further, in the present embodiment, a description will be given of a mode in which the fin packing 54 is used as a seal member that is watertightly connectable between the connection pipe member 52 and the tank-side connection portion 56, but as a modification, a fin packing other than the fin packing is used. A ring-shaped packing or a seal member such as an O-ring may be used. In this case, the seal member is provided in advance between the toilet body-side connecting portion and the tank-side connecting portion, such as the lower surface of the connecting port 58a of the step portion 58, and the toilet body using the bolts and nuts that are the connecting members. The toilet body-side connecting portion and the tank-side connecting portion may be water-tightly connected by tightening the connecting portion between the side connecting portion and the tank-side connecting portion from both upper and lower sides.
Further, in the present embodiment, the substantially cylindrical tank-side connection portion 56 will be described as being integrally formed with the water storage tank 20, but it may be a cylindrical member that is separate from the water storage tank 20. Good.

Next, as shown in FIG. 3 to FIG. 5, FIG. 7 and FIG. 8, the water storage tank 20 is internally provided with a step portion 58 which is integrally formed in the center portion in the left-right direction on the front side thereof. The step portion 58 projects rearward from the front surface (inner front surface 20a) in the water storage tank 20 and extends upward from the bottom surface 20b to the side of the cylindrical tank-side connection portion 56 and its rear side. It is formed so as to surround the outer peripheral portion on the side.
In addition, as shown in FIGS. 3 to 5, 7, and 8, the step portion 58 of the water storage tank 20 is connected to the throat pipe side connection portion 60 that forms the outflow port 40 b of the throat pipe 40, and is connected to the tank. It is provided with an upper end portion 58b in which a connection port 58a communicating with the side connection conduit 56a is formed. As shown in FIGS. 4 and 5, the upper end portion 58b of the step portion 58, when the water storage tank 20 is assembled from above into a predetermined installation space S1 behind the bowl portion 6 of the toilet body 2, As a watertight connecting operation in which the operator connects the upper end portion 52b of the connecting pipe member 52, which is the connecting portion on the toilet body side, and the tank connecting portion 56 in a watertight manner via the fin packing 54, a pushing operation from above to below is possible. Therefore, it is located above the full water level WL0 in the water storage tank 20.
Further, as shown in FIGS. 3 to 5, FIG. 7 and FIG. 8, regarding the spud 50 and the connection pipe member 52 which are the toilet body side connecting portions, and the tank side connecting portion 56, the water storage tank 20 is attached to the toilet body 2. When connecting in a watertight manner, the left and right sides and the rear side of these portions 50, 52, 56 are covered with the outer wall portion 58c (see FIG. 7) of the step portion 58, and these portions 50, 52 are also provided. , 56 is covered by the upper side wall portion 58d (see FIG. 7) of the step portion 58, and the front side and the lower side of these portions 50, 52, 56 are covered by the toilet body 2. The periphery of these portions 50, 52, 56, that is, the front-rear direction, the up-down direction, and the left-right direction of these portions 50, 52, 56 are covered so that the workers cannot directly access them.
In the flush toilet apparatus 1 of the present embodiment, the step portion 58 projects rearward from the front surface (inner front surface 20a) in the water storage tank 20 and extends upward from the bottom surface 20b to form a tubular shape. Since it is formed so as to surround the lateral side of the tank-side connecting portion 56 and the outer peripheral portion on the rear side thereof, the lateral side of the tank-side connecting portion 56 is covered with the tank 20 so that the operator cannot directly access it. However, the present invention is not limited to such a mode, and as another mode in which direct access by an operator is impossible, the side of the tank-side connecting portion 56 is a part of the toilet body 2. It may be in the form of being covered with both the tank 20 and a part of the tank 20.
In addition, the word "covered" in the description of "immediately inaccessible to the worker" in this specification is out of reach (inaccessible) of the worker. It means that the gap of is included.

Further, as shown in FIGS. 3 and 4, some steps are formed in the water storage tank 20, and in particular, the step 58 is among the steps formed in the water storage tank 20. It is the only stepped portion located above the lowest water level (dead water line DWL) in the water storage tank 20.

Next, as shown in FIG. 5, since the step portion 58 of the water storage tank 20 is formed in the center portion of the water storage tank 20 on the front side in the left-right direction, the water storage tank 20 is extended in the left-right direction in plan view. It is located on the central axis A1 that bisects it and is located on the front side of the central axis A2 that bisects the water storage tank 20 in the front-rear direction in plan view.
On the other hand, as shown in FIG. 5, each of the water supply valve device 26 and the throat pipe 40 has an upper end of the step portion 58 when the water storage tank 20 is assembled from the upper side to a predetermined installation position on the rear side of the toilet body 2. The portion 58b is arranged so as to be biased to a region on one side in the left-right direction in the water storage tank 20 so that the pushing operation can be performed from above to below.
More specifically, as shown in FIG. 5, the water supply valve device 26 is disposed in the water storage tank 20 on the right side of the central axis A1 that bisects the water storage tank 20 in the left-right direction in a plan view. In addition, the water storage tank 20 is arranged at a position closer to the rear side than the central axis A2 that bisects the water storage tank 20 in the front-back direction in plan view.
In addition, as shown in FIG. 5, the throat pipe 40 is disposed in the water storage tank 20 on the right side of the central axis A1 that bisects the water storage tank 20 in the left-right direction in a plan view, and also in a plan view. The water storage tank 20 is arranged at a position closer to the front side than a central axis A2 that bisects the water storage tank 20 in the front-rear direction.

Next, as shown in FIG. 5, the upper end portion 58b of the step portion 58 is formed in a region in one direction in the left and right width directions thereof, and is capable of being pushed in without interfering with the throat pipe side connecting portion 60. An area surface F1, a front area surface F2 smaller than the area of the operation area surface F1 formed between the throat pipe side connection portion 60 and the inner front surface 20a which is the front wall portion in the water storage tank 20 adjacent thereto. Is equipped with.
In the present embodiment, as shown in FIG. 5, with respect to the operation area surface F1 that can be pushed in without interfering with the throat pipe side connection portion 60, one side in the left-right width direction of the upper end portion 58b of the step portion 58 is formed. Although the form formed in the region in the direction will be described, the form may be formed in the regions in both the left and right width directions of the upper end portion 58b of the step portion 58.

Next, as shown in FIG. 8, each of the upper end portion 52b of the connecting pipe member 52 which is the toilet body side connecting portion, the fin packing 54 which is the sealing member, and the tank side connecting portion 56 has the water storage tank 20 as the toilet body 2 In the state of being assembled from the upper side to a predetermined installation position on the rear side of the above, they are arranged vertically below the step portion 58 so as to overlap each other. When the operation area surface F1 is pushed downward, the tank-side connecting portion 56 is pushed into the toilet body-side connecting pipeline 52a from the upper end portion 52b of the connecting pipe member 52 via the fin packing 54, and the fin packing 54 is connected. The water-tight connection between the water storage tank 20 and the toilet body 2 is inserted in a state where the upper end portion 52b of the pipe member 52 is inserted into the toilet body-side connection pipeline 52a and the insertion distance d is inserted by a predetermined insertion distance d0. It's supposed to be completed.
In the present embodiment, as an example, when the water storage tank 20 is assembled from above into a predetermined installation space S1 behind the bowl portion 6 of the toilet body 2, the operator is the toilet body connection portion. The operator operates the upper end portion 58b of the step portion 58 of the water storage tank 20 in a watertight connection operation in which the upper end portion 52b of the connection pipe member 52 and the tank-side connection portion 56 are watertightly connected via the fin packing 54. A mode in which the region surface F1 can be pushed in from above will be described, but the upper end portion 52b of the connection pipe member 52 and the tank-side connection portion 56 are fixed by a fastening member or the like via a seal member. The watertight connection operation described above may be performed by an operation other than the pushing operation.

Next, as shown in FIGS. 3, 4 and 8, on the bottom surface 62 of the installation space S1 in which the water storage tank 20 on the rear side of the toilet body 2 is installed, the lower surface 52c of the bent portion of the connection pipe member 52 is provided. A force distribution portion 64 made of earthenware and extending upward in the shape of a column is integrally formed.
The force distribution portion 64 is a toilet body-side connection portion when the operation area surface F1 of the upper end portion 58b of the step portion 58 is pushed downward in a state where the water storage tank 20 is assembled at a predetermined installation position from above. The lower surface 52c of the bent portion of the connection pipe member 52 is provided so as to be supported on the toilet body 2 side, and the pushing force acting on the connection pipe member 52 from the tank-side connection portion 56 can be dispersed.
In the present embodiment, the form in which the force distribution unit 64 is formed integrally with the toilet body 2 will be described, but the form may be formed integrally with the connection pipe member 52, or the force distribution unit 64 may be formed. It may be in the form of a force distribution member that is a separate body from the toilet body 2 and the connection pipe member 52.

Next, as shown in FIGS. 7 and 8, on the outer peripheral surface of the fin packing 54, which is a packing member formed in a substantially annular shape, there are a plurality of flexible projections protruding outward in the radial direction. The side fin portion 54a and the upper fin portion 54b are formed over the entire circumference. Further, a plurality of fins 54a and 54b are arranged at intervals in the axial direction of the outer peripheral surface of the fin packing 54.
Further, the plurality of fins 54a and 54b of the fin packing 54 can reliably maintain the watertightness even if the connecting pipe member 52, which is the toilet-side connecting portion, and the tank-side connecting portion 56 are misaligned with each other. It is like this.

Further, as shown in FIGS. 7 and 8, the fin packing 54, which is a seal member, is connected to the tank-side connecting portion 56 of the water storage tank 20 together with the connection pipe member when the water storage tank 20 is assembled at a predetermined installation position from above. The tank-side connecting portion 56 is water-tightly connected to the connecting pipe member 52 by being pushed into the toilet body-side connecting pipe line 52a of 52. The pushing force acting on the fin packing 54 at this time is the connecting pipe member. It is set to be smaller than the pull-out force that acts on the fin packing 54 when the tank-side connecting portion 56 that is watertightly connected to 52 is pulled out from the connecting pipe member 52 and removed.

Next, FIG. 9 is a rear view of the flush toilet device according to the first embodiment of the present invention.
As shown in FIG. 9, the flush toilet device 1 of the present embodiment is provided with a water storage tank 20 of the flush water tank device 4 installed in a predetermined installation space S1 on the back side and left and right sides of the water storage tank 20. The base portion 20c is provided with a pair of fixing devices 66 that are fixing portions that are fixed to the toilet body 2 so that the posture of the water storage tank 20 is maintained in a horizontal state and that are horizontal maintaining portions.

FIG. 10 is an enlarged schematic perspective view of a fixing device for fixing the water storage tank of the flush water tank device to the toilet body in the flush toilet device according to the first embodiment of the present invention shown in FIG. 9, and FIG. FIG. 3 is a schematic view of a fixing device for fixing the water storage tank of the flush water tank device in the flush toilet device according to the first embodiment of the invention to the toilet body.
As shown in FIGS. 10 and 11, the fixing device 66 includes a rubber bush 68 attached by being inserted into a mounting hole 62a of a bottom surface 62 of the installation space S1 of the water storage tank 20 on the rear side of the toilet body 2, and a water storage tank. A flexible member 70 formed of a cushion or the like arranged in a long hole 20d for fixing a tank that vertically penetrates the base portion 20c of 20 and a bolt 72 attached to the rubber bush 68 via the flexible member 70. A washer 74 which is attached to the bolt 72 and whose lower surface is in contact with the bottom surface 20b of the water storage tank 20, and a spring washer 76 which is attached to the bolt 72 and whose lower surface is in contact with the upper surface of the washer 74. I have it.
A bolt operating portion 78, whose lower surface is in contact with the upper surface of the spring washer 76, is integrally formed on the head (upper end) of the bolt 72 so as to project radially outward.
Further, the rubber bush 68 also functions as a nut with which the lower portion of the bolt 72 is screwed.
Then, these elements 68, 70, 72, 74, 76, 78 function as a horizontal adjustment unit capable of adjusting the posture of the water storage tank 20 to a horizontal state.
In the present embodiment, the rubber bush 68 and the flexible member 70 are described as separate members, but the members 68, 70 may be integrally formed with each other.

More specifically, as shown in FIGS. 9 to 11, in the fixing device 66, after the water tank 20 is assembled at a predetermined installation position on the rear side of the toilet body 2, the bolt operation portion 78 is tightened. Since the flexible member 70 can be elastically deformed in the axial direction according to the tightening condition of the bolt operating portion 78, the elastic deformation amount can be adjusted. The height position of the water storage tank 20 with respect to the toilet body 2 can be adjusted.
Therefore, after the water storage tank 20 is assembled at a predetermined installation position on the rear side of the toilet body 2 and then fixed to the toilet body 2 by the fixing device 66, for example, the height position of the water storage tank 20 is finely adjusted. Or when it becomes necessary to finely adjust the posture of the water storage tank 20 to a horizontal state, the water storage tank 20 is not removed from a predetermined installation position on the rear side of the toilet body 2, and the bolt operation part 78 is removed. Fine adjustment of the height position of the water storage tank 20 can be performed simply by operating the tightening condition to adjust the deformation condition of the flexible member 70 and the fastening condition between the toilet body 2 and the water storage tank 20 by the fixing device 66. Alternatively, the posture of the water storage tank 20 can be easily finely adjusted to a horizontal state.
In the present embodiment, the fixing device 66 includes the flexible member 70, but the flexible member 70 may be omitted.

Further, as shown in FIG. 11, in the present embodiment, the size of the long hole 20d for fixing the tank in the base portion 20c of the water storage tank 20 is larger than the outer diameters of the bolt 72 and the flexible member 70 to some extent. Since it functions as a set adjustment hole, even if there is a dimensional error in the water storage tank 20 or some dimensional error in the pottery body 2 of the pottery, the water storage tank 20 is moved within the range of the elongated hole 20d and positioned. Can be finely adjusted to absorb a dimensional error.

Next, FIG. 12 is a perspective view showing a state when the connection state between the toilet body and the water storage tank in the flush toilet device according to the first embodiment of the present invention is confirmed.
As shown in FIGS. 2 and 12, a pushing depth confirmation line L1 extending in the horizontal and horizontal directions is provided on the outer front surface 20e of the water storage tank 20 as a connection state confirmation means.
On the other hand, whether or not the line L2 extending in the horizontal left-right direction of the front upper edge portion 80 of the installation space S1 of the rear side water storage tank 20 in the toilet body 2 matches the pushing depth confirmation line L1 of the water storage tank 20. It is a confirmation line L2 on the toilet body side for confirmation, and functions as a connection state confirmation means.
Here, in the water storage tank 20 shown in FIG. 12, after the water storage tank 20 is assembled in the predetermined installation space S1 on the rear side of the toilet body 2, the tank lid 82 is located on the rear side of the toilet body 2. Before it is attached to the upper end of the installation space S1, the pushing depth confirmation line L1 is parallel to the confirmation line L2 on the toilet body side, and substantially coincides with the height position of both L1 and L2. 20 is properly installed at a predetermined installation position on the rear side of the toilet body 2.

1 to 15, a method of installing the flush water tank device 4 of the flush toilet device 1 according to the first embodiment of the present invention at a predetermined installation position of the toilet body 2, and the method of the present invention. The operation of the flush toilet device 1 according to the first embodiment will be described.
First, FIG. 13A is a schematic cross-sectional view showing a state before the start of construction in which the water storage tank of the flush water tank device in the flush toilet device according to the first embodiment of the present invention is not assembled at a predetermined installation position on the rear side of the toilet body. It is a figure.
Next, FIG. 13B shows that the water tank of the flush water tank device of the flush toilet device according to the first embodiment of the present invention is at a predetermined installation position on the rear side of the toilet body after the pre-installation state shown in FIG. 13A. FIG. 4 is a schematic cross-sectional view showing a first construction state in which only the spud is watertightly connected to the inlet of the water conduit of the toilet body before being assembled.
Further, FIG. 13C shows that after the first construction state shown in FIG. 13B, the water storage tank of the flush water tank device of the flush toilet device according to the first embodiment of the present invention is at a predetermined installation position on the rear side of the toilet body. It is a schematic sectional drawing which shows the 2nd construction state in which the connection pipe member was watertightly connected to the spud watertightly connected to the inlet of the water conduit of the toilet body before being assembled.
Further, FIG. 13D shows that after the second construction state shown in FIG. 13C, the tank-side connection portion of the water storage tank of the flush water tank device of the flush toilet device according to the first embodiment of the present invention is watertight to the connection pipe member. It is a schematic sectional drawing which shows the 3rd construction state with which the water tank was assembled|attached from the upper side to the predetermined installation position of the back side of the toilet body by being connected.
Next, FIG. 14A shows the underside of the fin packing of the flush toilet apparatus according to the first embodiment of the present invention in a state between the second construction state shown in FIG. 13C and the third construction state shown in FIG. 13D. FIG. 6 is a schematic front cross-sectional view showing a state immediately before the fin portion and the upper fin portion are inserted into the connection duct of the connection pipe member.
In addition, FIG. 14B is a halfway insertion state when only the lower fin part of the fin packing of the flush toilet device according to the first embodiment of the present invention is inserted into the connection conduit of the connection pipe member from the state shown in FIG. 14A. It is a schematic front sectional view showing.
Further, FIG. 14C shows the insertion completion position in the connection conduit of the connection pipe member from the state in which both the lower and upper fins of the fin packing of the flush toilet apparatus according to the first embodiment of the present invention are shown in FIG. 14B. FIG. 9 is a schematic front sectional view showing a state in which the insertion is completed when the insertion is made up to FIG.

First, as shown in FIG. 13A, before the worker starts construction before installing the flush water tank device 4 of the flush toilet device 1 according to the present embodiment in the predetermined installation space S1 on the rear side of the toilet body 2. The construction is started from the state, and then the spud 50 is inserted into the installation space S1 from above as shown in FIG. 13B. Then, by inserting the spud 50 into the inlet 14a of the water conduit 14 of the toilet body 2 from the rear side, only the spud 50 is watertightly connected to the inlet 14a of the water conduit 14 of the toilet body 2. This is the first construction state, which is the state.

Next, after the first construction state shown in FIG. 13B, as shown in FIG. 13C, after inserting the connecting pipe member 52 into the installation space S1 from above, the upper end portion 52b of this connecting pipe member 52 is moved upward. The front end portion 52d of the connecting pipe member 52 is inserted from the rear side with respect to the spud 50 that is watertightly connected to the inlet 14a of the water conduit 14 of the toilet body 2 so as to be watertight. As a result, the connection pipe member 52 is in a second construction state where the connection pipe member 52 is watertightly connected to the spud 50, and the connection pipe line of the connection pipe member 52 (toilet body side connection pipe line 52a) and the water conduit 14 of the toilet body 2 are provided. And are in communication with each other.
Further, as shown in FIG. 13B, in the second construction state, the force distribution portion 64 of the toilet body 2 supports the lower side surface 52c of the bent portion of the connection pipe member 52 from below.

Next, after the second construction state shown in FIG. 13C, as shown in FIG. 13D, related members such as the water supply valve device 26 and the jet pump unit 30 are previously assembled in the water storage tank 20 of the wash water tank device 4. With respect to the water storage tank 20 in the opened state, with the fin packing 54 attached to the lower end of the tank-side connecting portion 56, the lower end of the tank-side connecting portion 56 and the fin packing 54 are inserted from above into the predetermined installation space S1. The upper end portion 52 of the connecting pipe member 52 is inserted into the connecting pipe line (the toilet body side connecting pipe line 52a) of the connecting pipe member 52.
At this time, the operator manually pushes the operation area surface F1 (see FIG. 5) of the upper end portion 58 of the step portion 58 in the water storage tank 20 from the upper side to the lower side, whereby the tank-side connecting portion is connected. A state in which the lower end of 56 and the fin packing 54 are inserted from the upper end 52 of the connecting pipe member 52 into the toilet body side connecting pipe 52a of the connecting pipe member 52 by a predetermined insertion distance d0 (see FIGS. 8 and 14C) Become.
As a result, as shown in FIG. 13D, the water storage tank 20 is assembled from the upper side to a predetermined installation position on the rear side of the toilet body 2, and the lower end of the tank-side connecting portion 56, the fin packing 54, and the connecting pipe member 52 are connected. Is in a third construction state in which it is watertightly connected.

By the way, FIG. 15 is a diagram qualitatively showing the relationship between the insertion distance after contact and the pushing force (contact resistance) in the fin packing of the flush toilet device according to the first embodiment of the present invention, and the first diagram of the present invention. It is the figure which compared with the diagram which qualitatively shows the relationship of the insertion distance and pushing force (contact resistance) in the modification of the fin packing of the flush toilet apparatus by embodiment.
Here, the horizontal axis of FIG. 15 shows the insertion distance d when the lower end portion of the tank-side connection portion 56 and the fin packing 54 are inserted into the upper end portion 52b of the connection pipe member 52, and the vertical axis of FIG. When the lower end portion of the tank-side connecting portion 56 and the fin packing 54 are inserted into the upper end portion 52b of the connecting pipe member 52, the operation area surface F1 (see FIG. 5) of the upper end portion 58 of the step portion 58 of the water storage tank 20 is lowered from above. Corresponding to the pushing force P when the pushing operation is performed toward, the contact resistance when the fins 54a and 54b of the fin packing 54 come into contact with the connection conduit of the connection conduit member 52 (the connection conduit 52a on the toilet body side). It is qualitatively consistent with R.
14B and FIG. 15 from the state immediately before the lower end portion of the tank-side connecting portion 56 and the fin packing 54 shown in FIG. 14A are plugged into the connecting conduit of the connecting pipe member 52 (toilet body-side connecting conduit 52a). As described above, when the lower end of the tank-side connecting portion 56 and the fin packing 54 are further inserted to the insertion distance d1, only the lower fin portion 54a of the fin packing 54 comes into contact with the inside of the toilet body-side connecting conduit 52a.
Then, as shown in FIG. 15, when the lower end portion of the tank-side connecting portion 56 and the fin packing 54 are further inserted to the insertion distance d2 (>d1), both the lower fin portion 54a and the upper fin portion 54b of the fin packing 54 are inserted. The contact with the inside of the toilet main body side connection conduit 52a starts due to. At this time, in the section where the insertion distance d is d1 to d2 in FIG. 15, only the lower fin portion 54a of the fin packing 54 is in contact, so the pushing force P and the contact resistance R are relatively gentle. With a certain inclination, the pushing force P1 and the contact resistance R1 increase almost proportionally.
After that, as shown in FIGS. 8, 14C, and 15, when the lower end of the tank-side connecting portion 56 and the fin packing 54 are inserted up to the maximum insertion distance d0 (>d2), the lower end of the tank-side connecting portion 56 and the fin packing. 54 is inserted to the insertion completion position in the toilet body side connection conduit 52a of the connection pipe member 52, and the insertion completion state is achieved. At this time, in the section where the insertion distance d is from d2 to d0 in FIG. 15, both the lower fin portion 54a and the upper fin portion 54b of the fin packing 54 are in contact with each other, so the pushing force P and the contact resistance are R has a resistance larger than that in the state where only the lower fin portion 54a of the fin packing 54 is in contact, and increases almost proportionally to the pushing force P2 and the contact resistance R2.

Next, after the third construction state shown in FIG. 13D, as shown in FIGS. 9 to 11, while adjusting the tightening degree of the bolt operation portion 78 of the bolt 72 by the fixing device 66, the rear side of the water storage tank 20. Further, the base parts 20c on both the left and right sides are fixed to the toilet body 2 so that the posture of the water storage tank 20 is maintained in a horizontal state.
Then, as shown in FIG. 12, it is confirmed that the push-in depth confirmation line L1 is parallel to the confirmation line L2 on the toilet body side, and substantially coincides with the height positions of both L1 and L2. When it is confirmed that the 20 is properly installed at the predetermined installation position on the rear side of the toilet body 2, the tank lid 82 is attached to the upper end of the installation space S1 of the water tank 20 on the rear side of the toilet body 2. The installation and the construction shown in FIG. 3 are completed.

On the other hand, if it cannot be confirmed that the water storage tank 20 is correctly installed at a predetermined installation position on the rear side of the toilet body 2, the posture of the water storage tank 20 may not be horizontal, so By moving the position of the water storage tank 20 within the range of the long hole 20d for fixing the tank of the base 20c of the water storage tank 20 without removing the tank 20 from the predetermined installation position, the water storage tank 20 in the setting space S1 The relative position of the toilet body 2 in the front-rear direction and the left-right direction is adjusted, and again, as shown in FIGS. 9 to 11, while adjusting the tightening degree of the bolt operation portion 78 of the fixing device 66, the rubber bush 68 and the flexible bush 68 can be adjusted. By adjusting the elastic deformation amount of the flexible member 70, as shown in FIG. 12, fine adjustment such as adjusting the height position of the water storage tank 20 with respect to the toilet body 2 can be performed until the correct installation state can be confirmed. To do.

On the other hand, in FIG. 15, as a modification of the fin packing 54 of the flush toilet apparatus 1 according to the first embodiment of the present invention, an example in which a single flexible fin portion is provided instead of the two fin portions 54a and 54b. The single fin has a rigidity higher than that of the fins 54a and 54b because the thickness of the single fin is larger than the thickness of the fins 54a and 54b described above.
Accordingly, in the fin packing of the modified example, when the contact between the single fin part and the inside of the toilet body side connection conduit 52a of the connection pipe member 52 starts, the pushing force P and the contact resistance R are two fin parts 54a and 54b. With the resistance larger than that of the fin packing 54 provided with, the pushing force P2 and the contact resistance R2 can be reached with the insertion distance d3 smaller than the insertion distance d2, and the insertion complete state can be achieved. ..

According to the flush toilet device 1 according to the first embodiment of the present invention described above, the operator installs the water storage tank 20 into the predetermined installation space S1 behind the bowl portion 6 of the toilet body 2 from above. When connecting the water storage tank 20 to the toilet body 2 in a watertight manner, the periphery of each of the connection pipe member 52 and the tank-side connection portion 56, which are the connection portions on the toilet body side, is directly around the operator. Even when the access is covered in an inaccessible manner, since the upper end 58b of the step 58 in the water storage tank 20 is located above the full water level WL0 in the water storage tank 20, the worker can store water. The upper end 58b of the step 58 in the water storage tank 20 can be easily and directly accessed from above the tank 20.
Therefore, the operator who directly accesses the upper end portion 58b of the step portion 58 in the water storage tank 20 connects the upper end portion 52b of the connecting pipe member 52 and the tank-side connecting portion 56 in a watertight manner through the fin packing 54. By simply performing the connecting operation on the upper end portion 58b of the step portion 58 in the water storage tank 20, the tank-side connection portion 56 can be reliably connected to the connection pipe member 52 through the fin packing 54 in a watertight manner. 20 can be easily connected to the toilet body 2 in a watertight manner.

Further, according to the flush toilet apparatus 1 of the present embodiment, the only step formed in the water storage tank 20 is that the step portion 58 in the water storage tank 20 is located above the lowest water level DWL in the water storage tank 20. Since it is the stepped portion, the space occupied by the stepped portion 58 in the water storage tank 20 can be suppressed, so that the entire water storage tank 20 can be downsized.

Further, according to the flush toilet apparatus 1 of the present embodiment, the step portion 58 in the water storage tank 20 is formed in the central portion in the left-right direction in the water storage tank 20, and the upper end portion 58b of the step portion 58 in the water storage tank 20 is formed. Since the water supply valve device 26, the throat pipe 40, and the like are arranged so as to be offset to a region on one side in the left-right direction in the water storage tank 20 so that a part of the water storage tank 20 can be pushed in, the water storage tank 20 can be operated by an operator. When the tank-side connecting portion 56 is watertightly connected to the connecting pipe member 52 via the fin packing 54, the water tank 20 is assembled from above in a predetermined installation position on the rear side of the water conduit 14 of the toilet body 2. It is possible to secure an operation space when a worker who directly accesses the upper end portion 58b of the inner step portion 58 performs a watertight connection operation of the upper end portion 58b of the step portion 58 in the water storage tank 20.
Therefore, the operator can reliably perform a watertight connection operation on a part of the upper end portion 58b of the step portion 58 in the water storage tank 20, and securely connect the tank side connection portion 56 to the connection pipe member 52 via the fin packing 54. The water storage tank 20 can be reliably connected to the toilet body 2 in a watertight manner.

Further, according to the flush toilet apparatus 1 according to the present embodiment, the upper end portion 58b of the step portion 58 in the water storage tank 20 is formed in a region in one of the left and right width directions and interferes with the throat pipe side connecting portion 60. The operation area surface F1 that enables a watertight connection operation without any operation is provided, and the area of the operation area surface F1 is formed between the throat pipe-side connecting portion 60 and the inner front surface 20a of the water storage tank 20 adjacent to this. Since the front area surface F2 smaller than the above is provided, the operation area surface F1 of the upper end portion 58b of the step portion 58 in the water storage tank 20 can be set relatively large without interfering with the throat pipe side connection portion 60. Therefore, the watertight connection operation on the operation area surface F1 of the upper end portion 58b of the step portion 58 can be facilitated.
Further, the front area F2 of the upper end portion 58b of the step portion 58 in the water storage tank 20 can be set to be relatively small, and the dead space in the water storage tank 20 can be minimized. The whole can be miniaturized.

Further, according to the flush toilet device 1 according to the present embodiment, the water storage tank 20 is assembled at a predetermined installation position from the upper side with respect to each of the fin packing 54, the tank-side connection portion 56, and the connection pipe member 52. The lower end of the tank-side connecting portion 56 is arranged vertically below the step portion 58 so as to overlap with each other, and the lower end portion of the tank-side connecting portion 56 is inserted into the toilet body side of the connecting pipe member 52 via the fin packing 54. Since the water storage tank 20 and the toilet body 2 can be connected in a watertight manner by being inserted into the connection conduit 52a, the water storage tank 20 has a predetermined installation space behind the bowl portion 6 of the toilet body 2. When the operator pushes the operation area surface F1 of the step portion 58 in the water storage tank 20 when the work piece is assembled to S1 from above, the fin packings 54 overlapping vertically below the step portion 58, The pushing force P can be efficiently exerted on each of the tank-side connecting portion 56 and the connecting pipe member 52, so that they can be reliably connected to each other in a watertight manner.
Therefore, the pushing force P of the step portion 58 required for the pushing operation at the time of the watertight connection of the fin packing 54, the tank side connecting portion 56, and the connecting pipe member 52 can be completed with a relatively small force, and thus the pushing operation is directly performed. Since it is possible to reduce the size of the step portion 58 itself, which is performed as a whole, the entire water storage tank 20 can be downsized.

Further, according to the flush toilet apparatus 1 according to the present embodiment, the operation area surface F1 of the upper end portion 58b of the step portion 58 is pushed downward in a state where the water storage tank 20 is assembled at a predetermined installation position from above. At this time, the force distribution portion 64 is provided so that the lower side surface 52c of the bent portion of the connection pipe member 52 can be supported on the toilet body side, and the pushing force P acting on the connection pipe member 52 from the tank-side connection portion 56 can be dispersed. By further including, it is possible to perform an operation of pushing the tank-side connecting portion 56 from the upper side to the lower side with respect to the connecting pipe member 52, and an excessive pushing force P is applied from the tank-side connecting portion 56 to the connecting pipe member 52. Also, since the pushing force P can be dispersed by the force distribution portion 64, it is possible to prevent the connection pipe member 52 from being damaged.

Next, with reference to FIG. 16, a flush toilet device 100 according to a second embodiment of the present invention will be described.
FIG. 16 is a front sectional view similar to FIG. 4, showing a flush toilet device according to a second embodiment of the present invention.
Here, in the flush toilet device 100 according to the second embodiment of the present invention shown in FIG. 16, the same parts as those of the flush toilet device 1 according to the first embodiment of the present invention shown in FIG. The description thereof is omitted.
As shown in FIG. 16, the flush toilet apparatus 100 according to the present embodiment is provided with a force distribution member 164 that supports the connection pipe member 52 from below, and the base portion 164a of the force distribution member 164 is the toilet body. 2 is fixed to the bottom surface 62 of the installation space S1 of the water storage tank 20 on the rear side of 2, and the force integrally formed on the toilet body 2 of the flush toilet apparatus 1 according to the first embodiment of the present invention described above. The form is different from that of the dispersion unit 64.

According to the flush toilet device 100 according to the second embodiment of the present invention described above, the operation of pushing the tank-side connecting portion 56 into the connecting pipe member 52 from the upper side to the lower side is performed to connect from the tank-side connecting portion 56. Even if an excessive pushing force P is applied to the pipe member 52, the pushing force P can be dispersed by the force distribution member 164, so that the connection pipe member 52 can be prevented from being damaged.

Next, with reference to FIG. 17, a flush toilet device 200 according to a third embodiment of the present invention will be described.
FIG. 17 is a schematic perspective view of the toilet body of the flush toilet device according to the third embodiment of the present invention before the water tank of the flush water tank device is assembled at a predetermined installation position, as viewed from the rear side. ..
Here, in the flush toilet device 200 according to the third embodiment of the present invention shown in FIG. 17, the same parts as those of the flush toilet device 1 according to the first embodiment of the present invention described above are designated by the same reference numerals, and The description of is omitted.
As shown in FIG. 17, in the flush toilet apparatus 200 according to the present embodiment, between the spat 50 watertightly connected to the inlet 14a of the water conduit 14 of the toilet body 2 and the tank side connection 56 of the water storage tank 20. The connection pipe member 252 that is connected in a watertight manner has a force distribution portion 264 integrally formed in a flange shape from the upper end portion 252a in the left-right direction, and both end portions of the force distribution portion 264 in the left-right direction of the toilet body 2 are formed. In terms of being partially supported and fixed, the force dispersion unit 64 integrally formed with the toilet body 2 of the flush toilet apparatus 1 according to the first embodiment of the present invention described above, and the second embodiment of the present invention. Each of the force distribution members 164 of the flush toilet device 100 of FIG.

According to the flush toilet device 200 according to the third embodiment of the present invention described above, the operation of pushing the tank-side connecting portion 56 into the connecting pipe member 252 from the upper side to the lower side is performed to connect from the tank-side connecting portion 56. Even if an excessive pushing force P is applied to the pipe member 252, since the pushing force P can be dispersed by the force distribution member 264, the connection pipe member 252 can be prevented from being damaged.

1 Flush toilet device according to the first embodiment of the present invention 2 Toilet body 4 Flush water tank device 6 Bowl part 8 Rim part 10 Drain trap conduit 10a Drain trap conduit inlet 14 Water conduit 14a Water conduit inlet 16 Spout Water inlet 18 Water supply pipe 20 Water storage tank (tank)
20a Inside front of water tank (front wall of tank, front of tank)
20b Bottom of water storage tank (bottom of tank)
20c Bottom of the water storage tank on the back side and on both left and right sides 20d Long holes for fixing the tank 20e Front side of the water storage tank 22 Constant flow valve 24 Main valve (water supply valve)
26 Water supply valve device (water supply valve)
28 Vacuum break valve 30 Jet pump unit 32 Operating lever 34 Water supply pipe 36 Jet nozzle 38 Flow path switching valve 40 Throat pipe 40a Suction port 40b Outlet port 42 Toilet bowl cleaning flow channel 44 Tank water storage channel 46 Drive shaft 48 Float 50 Spud (Toilet bowl body side connection part)
52 Connection pipe member (Toilet bowl body side connection part)
52a Toilet main body side connection conduit 52b Upper end portion of connection pipe member 52c Lower surface of bent portion of connection pipe member 52d Front end portion of connection pipe member 54 Fillet packing (seal member, packing member)
54a Lower fin (projection)
54b Upper fin part (projection part)
56 Tank side connection part 56a Tank side connection line (connection line)
58 step of water storage tank 58a connection port of step of water storage tank 58b upper end of step of water storage tank 58c outer wall of step of water storage tank 58d upper side wall of step of water storage tank 60 throat pipe side connection 62 Bottom of installation space of water tank on the rear side of toilet body 62a Mounting hole 64 Force distribution section 66 Fixing device (fixing section)
68 Rubber Bushing 70 Flexible Member 72 Bolt 74 Washer 76 Spring Washer 78 Bolt Operating Section 80 Front Upper Edge of Installation Space of Water Storage Tank on Rear Side of Toilet Body 82 Tank Lid 100 Large Flushing according to Second Embodiment of the Present Invention Toilet device 164 Force distribution member 164a Base part of force distribution member 200 Flush flush toilet device according to third embodiment of the present invention 252 Connection pipe member 252a Upper end portion of connection pipe member 264 Force distribution part A1 Horizontal direction of water storage tank in plan view The central axis that divides the water tank into two equal parts in the front-rear direction when viewed in plan D2 Minimum water level (dead water line)
d Insertion distance d0 Insertion distance d1 Insertion distance d2 Insertion distance d3 Insertion distance
F1 Pushable operation area surface F2 Front area surface L1 Water tank push-in depth confirmation line L2 Toilet body side confirmation line P Pushing force P1 Pushing force P2 Pushing force R Contact resistance R1 Contact resistance R2 Contact resistance S1 Toilet body Installation space for water tank on the rear side WL0 Full water level

Claims (6)

A flush toilet device that flushes a toilet bowl with flush water supplied by a jet pump action to discharge dirt.
A toilet body having a bowl portion for receiving dirt and a water conduit for guiding wash water to the bowl portion,
The toilet body is assembled from above at a predetermined installation position on the rear side of the bowl, and a portion of the wash water supplied from the water supply source is stored and the wash water is supplied to the water conduit of the toilet body. A tank to
A toilet body side connecting portion provided in a water conduit of the toilet body and connected to the tank, wherein one end is provided integrally with or separately from the water conduit and the other end is directed upward. The toilet body-side connecting portion forming a connection conduit,
A tank-side connecting portion that is provided on the front side of the tank and that is connected to the toilet body-side connecting portion, and that forms a tank-side connecting pipe line that extends upward from one end that can communicate with the toilet body-side connecting pipe line. And the tank side connection part,
A seal member provided to be watertightly connectable between the toilet body-side connecting portion and the tank-side connecting portion,
The tank is a jet pump unit that is disposed in a state where at least a part thereof is submerged in the tank, and has a jet nozzle that injects cleaning water supplied from the water supply source and a suction port at one end. At the other end, a throat pipe having an outlet for forming wash water flowing out toward the water conduit of the toilet body is provided, and the jet nozzle jets the wash water from the suction port of the throat pipe toward the inside. By so doing, a jet pump action that increases the flow rate of the wash water flowing in the throat pipe over the flow rate of the wash water injected from the jet nozzle is induced, and the increased flow rate of the wash water is discharged from the throat pipe to the toilet bowl. The jet pump unit that is supplied toward the water conduit of the main body,
A water supply valve which is provided inside the tank and stops the cleaning water supplied from the water supply source to the jet nozzle,
A step portion formed so as to protrude from the front surface of the tank toward the rear side into the inside of the tank and extend upward from the bottom surface of the tank;
The step portion has an upper end portion to which a throat pipe side connecting portion forming an outflow port of the throat pipe is connected and a connection port communicating with the tank side connecting pipe line is formed. The upper end portion enables a worker to perform a watertight connection operation for watertightly connecting the toilet body side connection portion and the tank side connection portion when the tank is assembled to the predetermined installation position from above. Is located above the full water level in the tank,
The toilet body-side connection portion and the tank-side connection portion, when the tank is watertightly connected to the toilet body, the periphery thereof is covered so that the operator cannot directly access it,
The stepped portion allows the tank-side connecting portion to be water-tightly connected to the toilet body-side connecting portion via the seal member by performing the water-tight connecting operation. apparatus. The flush toilet apparatus according to claim 1, wherein the step portion is the only step portion formed in the tank so as to be located above the lowest water level in the tank. The step portion is formed at a central portion in the left-right direction in the tank, and the water supply valve and the throat pipe are provided in the tank so that the watertight connection operation can be performed on a part of an upper end portion of the step portion. The flush toilet device according to claim 1 or 2, wherein the flush toilet device is arranged so as to be offset to one side area in the left-right direction. The upper end of the stepped portion is formed between the left and right widthwise regions of the operation area surface where the watertight connection operation is possible, the throat pipe side connection portion, and the front wall portion of the tank adjacent thereto. The flush toilet device according to any one of claims 1 to 3, further comprising: a front area surface formed between the operation area surfaces and having a smaller area than the operation area surface. The upper end of the stepped portion is provided with an operation area surface capable of the watertight connection operation,
Each of the seal member, the tank-side connecting portion, and the toilet body-side connecting portion may overlap with each other vertically below the step portion in a state where the tank is assembled at the predetermined installation position from above. Has been placed,
The watertight connection operation is a push-in operation in which the operator pushes the operation area surface downward when the tank is assembled to the predetermined installation position from above, and the step portion is the tank by the push-in operation. 5. The side connecting part is pushed into the toilet body side connecting part via the sealing member to enable the tank and the toilet body to be connected in a watertight manner. A flush toilet device. Further, it is provided so as to be able to support the toilet body side connection portion when the operation area surface of the upper end portion of the step portion is pushed downward in a state where the tank is assembled to the predetermined installation position from above. 6. The flush toilet apparatus according to claim 5, further comprising a force dispersion unit that disperses a pushing force that acts on the toilet body side connection unit from the tank side connection unit.

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