JP2017218789A - Flush toilet bowl device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flush toilet bowl device capable of connecting a tank to a toilet bowl body in a water-tight manner easily.SOLUTION: A flush toilet bowl device 1 includes: a tank 20 assembled from above in a predetermined installation position on the rear side of a toilet bowl body 2 for supplying washing water to a conduit 14 of the toilet bowl body; and an expandable/contractible connection member 52 for connecting a toilet bowl body side connection part 50 and a tank side connection part 56. Each of the toilet bowl body side connection part, the connection member and the tank side connection part is accessible by an operator in a state prior to the tank being assembled from above in the predetermined installation position, one end of the connection member can be connected to the other end of the toilet bowl body side connection part in a water-tight manner in advance, and the other end of the connection member can be connected to one end of the tank side connection part in a water-tight manner in advance. After the toilet bowl body side connection part and the tank side connection part are connected with each other in a water-tight manner via the connection member, the tank can be assembled from above in the predetermined installation position.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a flush toilet apparatus, and more particularly, to a flush toilet apparatus that flushes toilets with washing water supplied by a jet pump action and discharges filth.

Conventionally, as a flush toilet device for washing toilet bowls with wash water supplied by a jet pump action to discharge filth, wash water supplied from a water supply source as described in Patent Document 1, for example, There is known a tank in which a part of the tank is stored and a tank for supplying washing water to the toilet body is installed on the upper surface of the toilet body.
In such a conventional flush toilet apparatus, since the jet pump unit that induces the jet pump action and other related parts are built in the tank, in order to ensure the jet pump performance in the tank alone, It is desirable that the connection between the tank and the toilet body is made outside the tank.

JP 2014-190065 A

However, in recent years, due to diversification of design of flush toilet equipment and water saving, the tank is placed at a relatively low position on the rear side of the toilet bowl 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 is used, which suppresses the overall height of the flush toilet device. For such low silhouette type tanks, the width in the front-rear direction (depth direction) and the left-right direction are used. In order to reduce the dead space, it is unavoidable to design a tank that surrounds the connecting portion between the tank and the toilet body to reduce the dead space.
In addition, in the design of the tank and toilet body that surrounds the connection between the tank and the toilet body in this way, when the operator assembles the tank to the toilet body, the connection between the tank and the toilet body is handy. Therefore, it is difficult to perform construction by direct access by workers, so the operation of watertight connection between the tank and the toilet bowl must be performed indirectly by some means or method. There is a problem that it is difficult to secure.
In addition, a method of accessing the connection part between the tank and the toilet bowl from the inside of the tank is also conceivable. However, the space is occupied by many related parts in addition to the jet pump unit, so the tank is downsized. The smaller the space inside the tank, the more difficult it is for the operator to access it directly. Therefore, it is difficult to perform the connection operation directly to ensure water tightness near the connection in the tank. There is a problem that there is.

  Then, this invention was made | formed in order to solve the problem of the prior art mentioned above, and it aims at providing the flush toilet apparatus which can connect a tank to a toilet main body simply and watertightly.

In order to achieve the above object, the present invention is a flush toilet apparatus for washing toilet bowl with washing water supplied by a jet pump action to discharge waste, a bowl portion for receiving waste, and the bowl portion A toilet body having a water conduit for guiding the wash water to the toilet body, and a part of the wash water supplied from the water supply source is assembled at a predetermined installation position on the rear side of the bowl portion of the toilet body. A tank that is stored and supplies wash water to the water conduit of the toilet body, and includes a jet pump unit disposed in a state where at least a part of the tank is submerged, and the jet pump unit includes the water supply source. A jet nozzle for injecting the wash water supplied from the air outlet, and a suction port formed at one end and an outlet through which the wash water flows out toward the water conduit of the toilet body at the other end. A jet pipe, and the jet nozzle jets the wash water from the suction port of the throat pipe toward the inside, thereby cleaning the flow rate of the wash water flowing through the throat pipe from the jet nozzle. The tank for inducing a jet pump action that increases the flow rate of water and supplying an increased flow rate of wash water from the throat pipe toward the water conduit of the toilet body, and the water conduit of the toilet body A toilet body-side connection part that forms a toilet body-side connection pipe line, one end of which is provided integrally with or separately from the water conduit, and one end that is watertight to the other end of the toilet body-side connection part. A connecting member that is connected to form a connecting conduit that can communicate with the toilet main body-side connecting conduit, and a part of the tank, and one end of the connecting member is watertight to the other end of the connecting member. A cylindrical tank-side connecting portion that forms a tank-side connecting conduit that can communicate with the connecting conduit of the connecting member, and the toilet body-side connecting portion and the connecting member Each of the tank side connection portions is accessible to the operator before the tank is assembled at the predetermined installation position, and one end of the connection member is connected to the toilet body side connection portion in advance. The other end of the connecting member can be connected to one end of the tank side connecting portion in a watertight manner, and the toilet body side connecting portion and the tank side connection are connected in advance. After the parts are connected to each other in a watertight manner via the connection member, the tank can be assembled at the predetermined installation position, and the tank is assembled at the predetermined installation position. Above flights Each of the connection portion between the container main body side connection portion and the connection member, and the connection portion between the connection member and the tank side connection portion is maintained in watertightness, and each periphery is directly connected to the operator. It is characterized by being covered by the toilet body and the tank so that it cannot be accessed easily.
In the present invention configured as described above, in a state where the tank is assembled at a predetermined installation position on the rear side of the bowl portion of the toilet bowl body, the connection section between the toilet body side connection section and the connection member, and the connection member Even if the surrounding area of the connecting part between the tank and the tank side connecting part is covered by the toilet body and the tank and the worker cannot directly access the tank, the worker can remove the tank from the bowl part of the toilet body. Before assembling to the predetermined installation position on the rear side, one end of the connection member can be easily connected to the other end of the toilet body side connection portion in a watertight manner, and the other end of the connection member is connected in advance to the tank side. Since it can be easily watertightly connected to one end of the section, the watertightness of each of the connecting portion between the toilet body side connecting portion and the connecting member and the connecting portion between the connecting member and the tank side connecting portion is thereafter set. While lifting the tank can be easily assembled to the predetermined installation position of the rear side of the water conduit of the toilet body. Therefore, the tank can be easily and watertightly connected to the toilet body.

In the present invention, preferably, the connection member has a second predetermined length in which the length of the connection pipe line is longer than the first predetermined length in a state before the tank is assembled at the predetermined installation position. After the toilet body side connection portion and the tank side connection portion are connected in a watertight manner, the length of the connection pipe line is the first predetermined length in a state where the tank is assembled at the predetermined installation position. The toilet main body side connection portion and the tank side connection portion are connected in a watertight manner, whereby the connection pipeline can be expanded and contracted.
In the present invention configured as described above, for the connection member, the length of the connection pipe line of the connection member is longer than the first predetermined length before the tank is assembled at the predetermined installation position. After the toilet body side connection part and the tank side connection part are connected in a watertight manner with a length, the length of the connection pipe line is the first predetermined length with the tank assembled at a predetermined installation position. Since the side connection part and the tank side connection part are connected in a watertight manner, the connection pipe line of the connection member can be expanded and contracted. Therefore, particularly in a state where the tank is assembled at a predetermined installation position. And the length of the connecting pipe line can be set to the first predetermined length. Therefore, it is possible to reduce the pressure loss of the washing water flowing through the shortest connection pipe on the downstream side of the tank.
Therefore, since it is possible to suppress a decrease in the suction amount of the cleaning water in the tank due to the jet pump action of the jet pump unit in the tank, it is possible to suppress a decrease in the jet pump performance.

In the present invention, preferably, the toilet main body side connection portion and the tank side connection have a length of the connection pipe line with the first predetermined length in a state where the tank is assembled at the predetermined installation position. A guide portion for guiding the connecting member into a predetermined shape so that the portion can be connected in a watertight manner.
In the present invention configured as described above, the length of the connection pipe line of the connection member is the first predetermined length in a state where the tank is assembled at a predetermined installation position, and the toilet body side connection portion and the tank side connection portion. Has a guide part for guiding the connection member into a predetermined shape so that the tank can be connected in a watertight manner, so that the tank main body side connection part and the tank are previously connected by the connection member in a state before the tank is assembled at the predetermined installation position. The side connecting portion can be connected to the side connecting portion in a water-tight manner easily and reliably. After that, in a state where the tank is assembled at a predetermined installation position, the guide portion guides the connecting member into a predetermined shape. The length of the connecting pipe line can be reliably set to the first predetermined length.
Accordingly, it is possible to reduce the pressure loss of the washing water flowing in the first predetermined length of the connecting pipe on the downstream side of the tank, and the suction of the washing water in the tank by the jet pump action of the jet pump unit in the tank. Since a decrease in the amount can be suppressed, a decrease in jet pump performance can be suppressed.

In the present invention, preferably, the connecting member is made of an elastic member, and the flush toilet apparatus is further maintained in a horizontal state in a state where the tank is assembled in the predetermined installation position. A fixing portion that enables the tank to be fixed to the toilet body;
In the present invention configured as described above, the connecting member is made of an elastic member, and the flush toilet apparatus further includes a tank so that the posture of the tank assembled in a predetermined installation position is maintained in a horizontal state. By having a fixing portion that can fix the tank to the toilet body, the tank can be stably fixed to the toilet body in a state where the posture of the tank is maintained in a horizontal state.
Therefore, for example, when the reaction force by the connecting member acts on the tank or the tank side connection portion, the tank tilts and the water level in the tank tilts, so that the cleaning water in the tank by the jet pump action of the jet pump unit in the tank is Since it can suppress that suction amount falls, decline in jet pump performance can be controlled.

  According to the flush toilet apparatus of the present invention, the tank can be easily and watertightly connected to the toilet body.

It is a schematic perspective view of the flush toilet apparatus by one Embodiment of this invention. It is a disassembled perspective view of the flush toilet device by one Embodiment of this invention. It is the center side sectional view seen along the III-III line of FIG. It is front sectional drawing seen along the IV-IV line of FIG. It is a top view which shows the internal structure of the washing water tank apparatus in the flush toilet apparatus by one Embodiment of this invention. It is a block diagram which shows the basic composition of the washing water tank apparatus of the flush toilet apparatus by one Embodiment of this invention. It is the perspective view seen from the diagonal front of the water storage tank of the flush water tank apparatus of the flush toilet apparatus by one Embodiment of this invention. It is the A section enlarged view of FIG. It is a general | schematic center side sectional view which shows the state before assembling the washing water tank apparatus from the upper side in the predetermined installation position of the back side of a toilet bowl main body in the flush toilet apparatus by one Embodiment of this invention. It is a rear view of the flush toilet device by one Embodiment of this invention. It is the schematic perspective view which expanded the fixing device which fixes the water storage tank of the flush water tank apparatus to the toilet bowl main body in the flush toilet apparatus by one Embodiment of this invention shown in FIG. It is the schematic of the fixing device which fixes the water storage tank of the flush water tank apparatus in the flush toilet apparatus by one Embodiment of this invention to a toilet bowl main body. It is a perspective view which shows the state when confirming the connection state of the toilet bowl main body and the water storage tank in the flush toilet apparatus by one Embodiment of this invention. In the flush toilet apparatus according to an embodiment of the present invention, from the state before the start of construction where the water storage tank of the flush water tank apparatus is not assembled at a predetermined installation position on the rear side of the toilet body, the inlet of the water conduit of the toilet body It is a schematic sectional drawing which shows the 1st construction state with which the spat was connected watertight. After the first construction state shown in FIG. 14A, before the water storage tank of the flush water tank device of the flush toilet device according to one embodiment of the present invention is assembled to the predetermined installation position on the rear side of the toilet body, It is a schematic sectional drawing which shows the 2nd construction state by which the end of the connection pipe member which can be expanded-contracted was watertightly connected. After the second construction state shown in FIG. 14B, before the water storage tank of the flush water tank device of the flush toilet device according to one embodiment of the present invention is assembled at a predetermined installation position on the rear side of the toilet body, It is a schematic sectional drawing which shows the 3rd construction state by which the other end of the connection pipe member was watertightly connected to the tank side connection part of the water storage tank of a tank apparatus. After the third construction state shown in FIG. 14C, the water storage tank of the flush toilet apparatus of the flush toilet apparatus according to one embodiment of the present invention is assembled from above at a predetermined installation position on the rear side of the toilet body. It is a schematic sectional drawing which shows the construction state of 4. FIG.

Hereinafter, a flush toilet apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, the basic structure of a flush toilet apparatus according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic perspective view of a flush toilet apparatus according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a flush toilet apparatus according to an embodiment of the present invention, and FIG. It is the center side sectional view seen along line III-III.

First, as shown in FIGS. 1-3, the flush toilet apparatus 1 by one Embodiment of this invention is installed in the predetermined installation position of the toilet body 2 made from earthenware, and this toilet body 2 back side. In addition, a washing water tank device 4 for supplying washing water to the toilet body 2 is provided. This flush toilet apparatus 1 is, for example, a so-called water-saving flush-type flush toilet that is washed with 6.0 liters or less of washing water, preferably with 3.0 to 4.8 liters of washing water. is there.
Next, as shown in FIG. 3, the toilet body 2 includes a bowl portion 6 provided on the front side thereof for receiving filth, and a rim portion 8 formed on the upper edge of the bowl portion 6.
In addition, an inlet 10a of a drain trap conduit 10 opens at the bottom of the bowl portion 6 of the toilet body 2, and the drain trap conduit 10 extends obliquely downward and rearward from the inlet 10a and then obliquely upward. And it extends to the top on the rear side, and then extends downward and is connected to a drain socket (not shown) installed on the floor.
Further, as shown in FIG. 3, in the rim portion 8 on the side from the rear side of the bowl portion 6 of the toilet body 2, a guide for guiding the wash water supplied from the wash water tank device 4 to the bowl portion 6 is provided. A water channel 14 is formed, and a water discharge port 16 through which washing water in the water channel 14 is discharged is formed in a part of the rim portion 6.
In the flush toilet apparatus 1 according to the present embodiment, a form of a wash-out toilet that discharges filth by a height drop will be described, but the filth in the bowl portion 6 is sucked and drained using a siphon action. A so-called siphon-type toilet that discharges to the outside at once from the trap pipe 10 may be used, and toilets of other forms are also applicable.
In the flush toilet apparatus 1 according to the present embodiment, the drainage drained from the drain trap pipe 10 is discharged to a drain pipe (not shown) below the floor, but a drain socket (not shown) is adopted. Alternatively, a drain socket (not shown) for discharging drainage drained from the drain trap pipe 10 to a drain pipe (not shown) on the back side of the wall behind the flush toilet apparatus 1 is adopted. Form may be sufficient.

Next, the washing water tank device 4 will be described in detail with reference to FIGS.
4 is a front sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is a plan view showing the internal structure of the flush water tank device in the flush toilet apparatus according to the embodiment of the present invention. FIG. 6 is a block diagram showing the basic configuration of the flush water tank apparatus of the flush toilet apparatus according to one embodiment of the present invention.
4 and FIG. 5, the left and right direction when viewed from the front side of the toilet body 2 is “left side” and the left and 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 a water supply, and a rear side of the bowl portion 6 of the toilet body 2. A part of the wash water that is assembled to the predetermined installation space S1 from above and supplied from the water supply source (not shown) through the water supply pipe 18 is stored, and the wash water is stored in the water conduit 14 of the toilet body 2. The water storage tank 20 which is a tank which supplies water is provided.
In addition, although this embodiment demonstrates the form which the water storage tank 20 is assembled | attached from the upper side to the predetermined installation space S1 of the back side rather than the bowl part 6 of the toilet bowl main body 2, it is not restricted to such a form, A water storage tank 20 may be assembled from the side (lateral direction) into a predetermined installation space S1 on the rear side of the bowl portion 6 of the toilet body 2.
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 disposed at a relatively low position on the rear side of the toilet body 2 as shown in FIG. Thus, the water tank 20 is a so-called low silhouette type water tank where the upper end height of the water tank 20 is low.
Furthermore, in the flush toilet apparatus 1 of the present embodiment, the toilet room wall (not shown) and the like are provided adjacent to the rearmost end of the toilet body 2, so that the toilet body 2 is guided. When assembling the water storage tank 20 in a predetermined installation space S1 (see FIG. 2) on the rear side of the water channel 14, the water storage tank 20 must be inserted and assembled from the opened upper side of the installation space S1. It has become.

Next, as shown in FIGS. 3 to 6, a main valve 24 is provided inside the water storage tank 20 as a water supply valve for stopping the wash water supplied from the water supply pipe 18 through the constant flow valve 22. A water supply valve device 26 including a jet pump unit 30 (details will be described later) connected via a vacuum breaker valve 28 is provided on the downstream side of the water supply valve device 26 in the water storage tank 20. Yes.
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 to operate the water supply valve device 26. An operation lever 32 is provided.

Next, as shown in FIGS. 4 and 6, the jet pump unit 30 is arranged in a state where at least a part is submerged inside the water storage tank 20, and is supplied from a water supply pipe 34 extending from the vacuum breaking valve 28. A jet nozzle 36 for injecting clean water is provided. Here, the vacuum breaker valve 28 is for sucking air from the outside to prevent negative pressure in the water supply pipe 34 from the vacuum breaker valve 28 to the jet nozzle 36.
As shown in FIGS. 4 and 6, the jet pump unit 30 is provided near the downstream side of the jet nozzle 36, and the flow path of the cleaning water sprayed from the jet nozzle 36 is changed according to the water level in the water storage tank 20. The flow path switching valve 38 for switching is provided.
Further, as shown in FIGS. 3 to 6, the jet pump unit 30 includes a throat pipe 40 in which a suction port 40 a is formed at one end and an outflow port 40 b through which cleaning water flows out is formed at the other end. . As shown in FIG. 4, the throat pipe 40 has a tube shape extending from the suction port 40a to the outlet port 40b, for example, an inverted U-shape (or, in other words, an inverted J-shape, or Gooseneck type shape).
The jet nozzle 36 is disposed so as to face the suction port 40a of the throat pipe 40. The suction port 40a of the throat pipe 40 and the jet nozzle 36 are always submerged in the water storage tank 20. It has become.

Further, as shown in FIG. 6, the flow path switching valve 38 flows the cleaning water jetted from the jet nozzle 36 into the throat pipe 40 from the suction port 40 a of the throat pipe 40 when cleaning the bowl portion 6 of the toilet body 2. Thus, the toilet cleaning channel 42 that flows out from the outlet 40 b to the water conduit 14 side of the toilet body 2 and the cleaning water jetted from the jet nozzle 36 when the water storage tank 20 is stored do not flow into the throat pipe 40. In addition, it is possible to switch to any one of the tank water storage channels 44 that are directed into the water storage tank 20 outside the throat pipe 40 according to 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 cleaning water from the suction port 40a of the throat pipe 40 to the inside, whereby the throat The flow rate of the cleaning water flowing in the pipe 40 is increased more than the flow rate of the cleaning water jetted from the jet nozzle 36, and the increased amount of the cleaning water flows from the outlet 40 b of the throat pipe 40 to the toilet body. It is supplied toward the two water conduits 14.
That is, for the term “jet pump action” described in this specification, the flow of cleaning water having a momentum injected from the jet nozzle 36 toward the suction port 40a of the throat pipe 40 itself is a pump or the like. Without depending on other mechanical elements, a negative pressure is formed so as to directly draw the surrounding cleaning water such as the vicinity of the suction port 40a of the throat pipe 40, and the inside of the throat pipe 40 is utilized using this negative pressure. This means that the washing water in the water storage tank 20 sucked into the container is transported to the toilet body 2 side.

  As shown in FIGS. 4 to 6, the structure and operating mechanism of the water supply valve device 26 are the same as those in the prior art, and therefore a detailed description thereof is omitted, but the main valve 24 is a pilot type. The diaphragm valve can be opened and closed by the operation of a first pilot valve (not shown) connected to the operation lever 32 by the drive shaft 46 and opened and closed by the operation of the operation lever 32, and the water storage tank 26. 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 in accordance with the level of the cleaning water inside.

Next, FIG. 7 is a perspective view of the water storage tank of the flush toilet apparatus of the flush toilet apparatus according to the embodiment of the present invention as seen from an oblique front, and FIG. 8 is an enlarged view of part A of FIG. .
As shown in FIG. 2 to FIG. 4, FIG. 7 and FIG. 8, a spud 50, which is a toilet body side connection portion, is watertightly connected to the inflow port 14 a on the rear side of the water conduit 14 of the toilet body 2. One end of an expandable / contractible connecting pipe member 52, which is a connecting member, is inserted into the spud 50 from the rear side, and is watertightly connected through a band 54a.
As shown in FIGS. 2 to 4 and 8, the connecting pipe member 52 extends substantially horizontally from one end (front end) connected to the spud 50 in a watertight manner to the rear side, and then upwards. A connecting pipe line 52a that can be bent and bent is formed.
On the other hand, as shown in FIGS. 2, 4, 7, and 8, a band 54 b is provided at the other end (upper end 52 b) of the connecting pipe member 52. The band 54b is tightened from the outer peripheral side of the upper end portion 52b of the connection pipe member 52 in a state where the substantially cylindrical tank side connection portion 56 formed integrally with the water storage tank 20 is inserted into the connection pipe line 52a from above. Thus, the connection pipe member 52 and the tank side connection portion 56 of the water storage tank 20 are connected in a watertight manner. As a result, the tank side connection pipe 56 a formed inside the tank side connection portion 56 and the connection pipe 52 a of the connection pipe member 52 communicate with each other.
In addition, although this embodiment demonstrates the form that the spud 50 which is a toilet body side connection part is a different body with respect to the water conduit 14 of the toilet body 2, it is not limited to such a form, The toilet body side The spud 50 part which is a connection part may be formed integrally with the water conduit 14 of the toilet body 2 by the same pottery or the like.
In the present embodiment, the substantially cylindrical tank-side connection portion 56 will be described as being formed integrally with the water storage tank 20, but a cylindrical member separate from the water storage tank 20 may be used. Good.

Next, as shown in FIG. 3 to FIG. 5, FIG. 7 and FIG. 8, the water storage tank 20 is provided with a stepped portion 58 that is integrally formed at the center in the left-right direction on the front side. The step portion 58 protrudes 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 the rear thereof. It is formed so as to surround the outer peripheral portion on the side.
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 outlet 40 b of the throat pipe 40, and the tank An upper end portion 58b formed with a connection port 58a communicating with the side connection pipe 56a is provided. The upper end portion 58b of the stepped portion 58 has a full water level in the water storage tank 20, as shown in FIGS. It is located above WL0.
Further, as shown in FIGS. 3 to 5, 7, and 8, in a state where the water storage tank 20 is assembled at a predetermined installation position, a connection portion between the spud 50 and the connection pipe member 52, and a connection pipe member Each of the connection parts between the tank 52 and the tank side connection part 56 is maintained watertight, and the left and right sides and the rear side of these parts 50, 52, 56 are outside wall parts 58 c (see FIG. 7). Covered). Moreover, the upper side of these parts 50, 52, and 56 is covered with the upper side wall part 58d (refer FIG. 7) of the step part 58, Furthermore, the front side and lower side of these parts 50, 52, and 56 are the toilet bowl main bodies. 2, the surroundings of these portions 50, 52, 56, that is, the front-rear direction, the vertical direction, and the left-right direction of these portions 50, 52, 56 are not directly accessible by the operator. Covered.

  Further, as shown in FIGS. 3 and 4, several 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. This is the only step located above the lowest water level in the water storage tank 20 (dead water line DWL).

Next, as shown in FIG. 5, the stepped portion 58 of the water storage tank 20 is formed at the center in the left-right direction on the front side in the water storage tank 20. It is located on the central axis A1 that equally divides and is located further forward than 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 is disposed so as to be offset from one region in the left-right direction in the water storage tank 20.
More specifically, as shown in FIG. 5, the water supply valve device 26 is disposed on the right side of the central axis A <b> 1 that bisects the water tank 20 in the left-right direction in a plan view in the water tank 20. In addition, the water storage tank 20 is arranged in a rearward direction with respect to the central axis A2 that bisects the water storage tank 20 in the front-rear direction in plan view.
In addition, as shown in FIG. 5, the throat pipe 40 is disposed in the water tank 20 on the right side of the central axis A1 that bisects the water tank 20 in the left-right direction in plan view, and in plan view. The water storage tank 20 is arranged at a position closer to the front side than the central axis A2 that bisects the water storage tank 20 in the front-rear direction.

Next, FIG. 9 is a schematic central side cross-sectional view showing a state before the flush water tank device is assembled from the upper side to a predetermined installation position on the rear side of the toilet body in the flush toilet device according to one embodiment of the present invention. It is.
Here, although the detail of the method of installing the washing water tank apparatus 4 of the flush toilet apparatus 1 by one Embodiment of this invention in the predetermined installation position of the toilet body 2 is mentioned later using FIG. 13A-FIG. 13D. 2 and 9, in the state before the water storage tank 20 is assembled from the upper side into the predetermined installation space S1 on the rear side of the toilet body 2, the spud 50, which is a toilet body side connecting portion, is expanded and contracted. Each of the possible connecting pipe member 52 and the tank side connecting portion 56 can be accessed by an operator.
That is, as shown in FIGS. 2 and 9, the extendable connecting pipe member 52 is connected in advance in a state before 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. One end (front end) of the pipe member 52 can be connected to the other end (rear end) of the spud 50 connected to the inlet 14a of the water conduit 14 of the toilet body 2 in a watertight manner via a band 54a. In addition, the other end (upper end portion) of the connection pipe member 52 can be connected to the one end (lower end portion) of the tank side connection portion 56 in a watertight manner in advance.
2 and 9, the spud 50 and the tank side connection portion 56 are connected to each other in a watertight manner via the connection pipe member 52, and then the water storage tank 20 is moved to a predetermined installation position from above. It can be assembled.
Further, as shown in FIG. 8, in a state where the water storage tank 20 is assembled at a predetermined installation position from above, a connection portion between the spud 50 and the connection pipe member 52, and a connection pipe member 52 and the tank side connection portion 56. Each of the connecting parts is maintained watertight by the bands 54a and 54b, and the surroundings are covered with the toilet body 2 and the water storage tank 20 so that the operator cannot directly access them.

Next, as shown in FIGS. 8 and 9, the extendable connecting pipe member 52 is specifically a bellows-like hose member that is extendable in the axial direction and adjustable in overall length.
In addition, although this embodiment demonstrates the form which itself consists of elastic members, such as a spring element like a compression coil spring or a tension coil spring, as the connection pipe member 52 which can be expanded-contracted, such an elastic member, The connecting pipe member 52 that is a bellows-like hose member may be provided as a separate member. In short, the connection pipe member 52 is connected in a state where it is connected between the spud 50 and the tank side connection portion 56. What is necessary is just that the full length of the pipe member 52 can be adjusted suitably.
Accordingly, as shown in FIG. 9, the connecting pipe member 52 is configured so that the length (full length) of the connecting pipe line 52a of the connecting pipe member 52 before the water storage tank 20 is assembled at the predetermined installation position is as follows. The spud 50 and the tank side connection portion 56 are connected in a watertight manner with a length d2 when extended, which is a second predetermined length, which is longer than a length d1 when shortening, which is a predetermined length of 1. Yes. Thereafter, as shown in FIG. 8, the connecting pipe member 52 is configured such that the length of the connecting pipe line 52 a is the first length when the water storage tank 20 is assembled in the predetermined installation space S <b> 1 on the rear side of the toilet body 2. The connecting pipe member 52 and the connecting pipe line 52a can be shrunk so that the spud 50 and the tank side connecting part 56 are connected in a watertight manner with the shortened length d1.
In the present embodiment, the shortened length d1 which is the first predetermined length of the connection pipe line 52a of the connection pipe member 52 is the shortest length when the connection pipe member 52 is maximally contracted in the longitudinal direction. The length may be set, or it may be longer than the shortest length as long as it is shorter than the length d2 at the time of extension.

Further, as shown in FIGS. 7 and 8, the water storage tank 20 includes a guide portion 61 formed in a curved shape below the tank side connection portion 56. In the state where the water storage tank 20 is assembled at a predetermined installation position on the rear side of the toilet body 2, the guide portion 61 has a length d 1 when the length of the connection pipe line 52 a of the connection pipe member 52 is shortened. The connection pipe member 52 guides to a predetermined shape bent from the upper end portion to the front end portion so that the tank side connection portion 56 can be connected in a watertight manner.
Here, as shown in FIG. 8, in the present embodiment, the predetermined shape of the connecting pipe member 52 having the first predetermined length d1 when shortened is the center axis A3 of the connecting pipe line 52a. Although the form with one bending part R1 is demonstrated, the form without the bending part R1 may be sufficient.
In the present embodiment, the guide unit 61 of the water storage tank 20 is described as being formed integrally with the water storage tank 20, but a guide member that is a separate member from the water storage tank 20 may be employed. .
Further, in the present embodiment, as described above, the connecting pipe member 52 that can be expanded and contracted is an elastic member such as a spring element such as a compression coil spring or a tension coil spring. In addition to this, a guide function for guiding the connection pipe member 52 to a predetermined shape is provided. As a guide portion for guiding the connection pipe member 52 to a predetermined shape, a separate guide mechanism or a part of the connection pipe member 52 is provided. A spring mechanism may be provided.

Next, as shown in FIGS. 3, 4, and 8, the bottom surface 62 of the installation space S <b> 1 where the water storage tank 20 is installed on the rear side of the toilet body 2 is located upward to the vicinity of the lower side surface 61 a of the guide portion 61. A force distribution portion 64 made of earthenware extending in a columnar shape is integrally formed.
When the operation area plane F1 of the upper end portion 58b of the stepped portion 58 is pushed downward with the water storage tank 20 assembled at a predetermined installation position from above, the force distribution portion 64 is connected to the toilet body main body side connecting portion. The guide portion 61 that supports the lower side of the bent portion of the connecting pipe member 52 is provided so as to be supported on the toilet body 2 side, and is connected to the guide portion 61 from the tank side connecting portion 56 via the connecting pipe member 52. The acting pushing force can be dispersed.
In addition, although this embodiment demonstrates the form in which the force distribution part 64 was integrally formed in the toilet bowl main body 2, the form integrally formed in the guide part 61 may be sufficient, and the force distribution part 64 is the toilet bowl. It may be in the form of a force distribution member that is separate from the main body 2 and the connecting pipe member 52.

Next, FIG. 10 is a rear view of a flush toilet apparatus according to an embodiment of the present invention.
As shown in FIG. 10, the flush toilet apparatus 1 of the present embodiment has the water tank 20 of the water tank apparatus 4 installed in a predetermined installation space S <b> 1 on the back side and the left and right sides of the water tank 20. The base portion 20c includes 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.

FIG. 11 is an enlarged schematic perspective view of a fixing device for fixing the water tank of the flush water tank device to the toilet body in the flush toilet device according to the embodiment of the present invention shown in FIG. 10, and FIG. It is the schematic of the fixing device which fixes the water storage tank of the flush water tank apparatus in the flush toilet apparatus by one Embodiment to a toilet bowl main body.
As shown in FIGS. 11 and 12, the fixing device 66 includes a rubber bush 68 inserted into the mounting hole 62 a of the 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 made of a cushion or the like disposed in a tank fixing long hole 20d penetrating the base portion 20c of the tank 20 in the vertical direction, and a bolt 72 attached to the rubber bush 68 via the flexible member 70. A washer 74 that is attached to the bolt 72 and whose lower surface can contact the bottom surface 20b of the water storage tank 20, and a spring washer 76 that is attached to the bolt 72 and whose lower surface can contact the upper surface of the washer 74. I have.
In addition, a bolt operating portion 78 whose bottom surface can be in contact with the top surface of the spring washer 76 is integrally formed on the head (upper end) of the bolt 72 so as to protrude radially outward.
Further, the rubber bush 68 functions as a nut to which a lower portion of the bolt 72 is screwed.
These elements 68, 70, 72, 74, 76, 78 function as a horizontal adjustment unit that can adjust 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. However, the members 68 and 70 may be formed integrally with each other.

More specifically, as shown in FIGS. 10 to 12, the fixing device 66 is configured such that after the water storage tank 20 is assembled at a predetermined installation position on the rear side of the toilet body 2, the bolt operation unit 78 is tightened. Since the elastic deformation amount when the flexible member 70 is compressed in the axial direction can be adjusted according to the tightening degree of the bolt operation portion 78, the amount of elastic deformation can be adjusted. The height position of the water storage tank 20 with respect to the toilet body 2 can be adjusted.
Accordingly, after the water storage tank 20 is assembled at a predetermined installation position on the rear side of the toilet body 2, the height position of the water storage tank 20 is finely adjusted, for example, while being fixed to the toilet body 2 by the fixing device 66. Or when it is necessary to finely adjust the posture of the water storage tank 20 to a horizontal state or the like, without removing the water storage tank 20 from the predetermined installation position on the rear side of the toilet body 2, By simply adjusting the degree of deformation of the flexible member 70 and the degree of fastening by the fixing device 66 between the toilet body 2 and the water storage tank 20 by adjusting the tightening degree, the height position of the water storage tank 20 can be easily finely adjusted. Or, the posture of the water storage tank 20 can be finely adjusted to a horizontal state easily.
In addition, although this embodiment demonstrates the form in which the fixing device 66 was provided with the flexible member 70, the form which abbreviate | omitted about the flexible member 70 may be sufficient.

  12, in this embodiment, the size of the tank fixing long hole 20d in the base portion 20c of the water storage tank 20 is somewhat larger than the outer diameter of the bolt 72 and the flexible member 70. Since it functions as a set adjustment hole, even if there is a dimensional error of the water storage tank 20 or a slight dimensional error of the ceramic toilet body 2, the water storage tank 20 is moved within the range of the long hole 20d. Can be finely adjusted, and dimension errors can be absorbed.

Next, FIG. 13 is a perspective view showing a state when the connection state between the toilet body and the water storage tank in the flush toilet apparatus according to one embodiment of the present invention is confirmed.
As shown in FIGS. 2 and 13, the outer front surface 20 e of the water storage tank 20 is provided with a push-in depth confirmation line L <b> 1 extending in the horizontal left-right direction as 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 80 of the installation space S1 of the rear water storage tank 20 in the toilet body 2 also coincides with the pushing depth confirmation line L1 of the water storage tank 20 is determined. 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. 13, after the water storage tank 20 is assembled in the predetermined installation space S <b> 1 on the rear side of the toilet body 2, the tank lid 82 is located on the rear side of the water storage tank 20 in the toilet body 2. Before being installed at the upper end of the installation space S1, 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, 20 is in the state correctly installed in the predetermined installation position of the back side of the toilet body 2.

Next, referring to FIG. 1 to FIG. 14D, a method of installing the flush water tank device 4 of the flush toilet apparatus 1 according to one embodiment of the present invention at a predetermined installation position of the toilet body 2, and one of the present invention. The operation of the flush toilet apparatus 1 according to the embodiment will be described.
First, FIG. 14A shows a state of the toilet body from a state before the start of construction in which the water storage tank of the washing 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 embodiment of the present invention. It is a schematic sectional drawing which shows the 1st construction state by which the spat was watertightly connected to the inflow port of the water conduit.
Next, FIG. 14B shows that after the first construction state shown in FIG. 14A, the water storage tank of the flush water tank device of the flush toilet apparatus according to one 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 end of the connecting pipe member which can be expanded-contracted to a spud was connected watertight before assembling | attaching.
14C shows a state where the storage tank of the flush water tank device of the flush toilet apparatus according to the embodiment of the present invention is assembled at a predetermined installation position on the rear side of the toilet body after the second construction state shown in FIG. 14B. It is a schematic sectional drawing which shows the 3rd construction state by which the other end of the connection pipe member was watertightly connected to the tank side connection part of the water storage tank of a washing water tank apparatus before being done.
Further, FIG. 14D shows that after the third construction state shown in FIG. 14C, the water storage tank of the flush water tank device of the flush toilet device according to one embodiment of the present invention is moved upward to a predetermined installation position on the rear side of the toilet body. It is a schematic sectional drawing which shows the 4th construction state assembled | attached from the side.

  First, as shown to FIG. 14A, an operator is before construction start before installing the washing water tank apparatus 4 of the flush toilet apparatus 1 by this embodiment in the predetermined installation space S1 of the back side of the toilet bowl body 2. FIG. Construction is started from the state, and the spud 50 is inserted into the installation space S1 from above. And by inserting this spud 50 from the rear side with respect to the inlet 14a of the water conduit 14 of the toilet body 2, only the spud 50 is connected to the inlet 14a of the water conduit 14 of the toilet body 2 in a watertight manner. It becomes the 1st construction state which is a state.

  Next, after the first construction state shown in FIG. 14A, as shown in FIG. 14B, the extendable connecting pipe member 52 is inserted into the installation space S1 from above, and one end (front end) of the connecting pipe member 52 is then inserted. Portion) is inserted into the spud 50 from the rear side, and then the connecting portion between the spud 50 and the front end portion of the connecting pipe member 52 is watertightly connected in advance by a band 54a. Thereby, it will be in the 2nd construction state by which the connection pipe member 52 was reliably watertightly connected with respect to the spud 50, and the state where the connection pipe line 52a of the connection pipe member 52 and the water conduit 14 of the toilet bowl body 2 were connected. Become.

Next, after the second construction state shown in FIG. 14B, the water storage in a state where related members such as the water supply valve device 26 and the jet pump unit 30 of the washing water tank device 4 are assembled in advance outside the predetermined setting space S1. A tank 20 is prepared. After that, as shown in FIG. 14C, the other end (upper end portion) of the connecting pipe member 52 is extended in advance to the outside of the predetermined setting space S1.
And the tank side connection part 56 is inserted in the connection pipe line 52a from the upper end part with respect to this extended connection pipe member 52, and the upper end part of the connection pipe member 52 outside the predetermined setting space S1 And the tank side connection portion 56 are connected in advance in a watertight manner by a band 54b. As a result, the connection pipe member 52 is in a third construction state in which the connection pipe member 52 is securely connected to the tank side connection portion 56 in a watertight manner, and the connection pipe line 52a of the connection pipe member 52 and the tank side connection pipe of the tank side connection portion 56 are obtained. The path 56a is in communication.

Next, after the third construction state shown in FIG. 14C, the entire water storage tank 20 is inserted into the predetermined installation space S1 on the rear side of the toilet body from the upper side, and as shown in FIG. It becomes the 4th construction state assembled | attached from the upper side to the predetermined installation position of the back side of the toilet bowl body 2. FIG.
At this time, the connection pipe member 52 made of an elastic member is returned to a predetermined shape while being contracted by the elastic restoring force of the elastic member while being guided by the guide portion 61, and the length of the connection pipe line 52 a of the connection pipe member 52. Is set to the shortened length d1.

Next, after the fourth construction state shown in FIG. 14D, the back side of the water storage tank 20 is adjusted while adjusting the tightening degree of the bolt operating portion 78 of the bolt 72 by the fixing device 66 as shown in FIGS. 10 to 12. And about the base part 20c of both right and left sides, it fixes with respect to the toilet bowl main body 2 so that the attitude | position of the water storage tank 20 may be maintained at a horizontal state.
Then, as shown in FIG. 13, it is confirmed that the indentation 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 20 is correctly installed at a predetermined installation position on the rear side of the toilet body 2, a tank lid 82 is attached to the upper end of the installation space S1 of the rear water storage tank 20 in the toilet body 2. Installation and construction as shown in FIG. 3 are completed.

  On the other hand, if it is not possible to confirm 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 in the water storage tank 20 may not be in a horizontal state. Without removing the tank 20 from the predetermined installation position, the position of the water storage tank 20 in the setting space S1 is shifted by moving the position of the water storage tank 20 within the range of the tank fixing long hole 20d of the base portion 20c of the water storage tank 20. While adjusting the relative position in the front-rear direction and the left-right direction with respect to the toilet body 2, or adjusting the tightening degree of the bolt operation portion 78 of the fixing device 66 again as shown in FIGS. By adjusting the amount of elastic deformation of the flexible member 70, as shown in FIG. 13, until the correct installation state can be confirmed, the toilet body 2 of the water storage tank 20 is fixed. Perform fine adjustment such or adjusting the height position.

According to the flush toilet apparatus 1 according to the embodiment of the present invention described above, in the state where the water storage tank 20 is assembled in the predetermined installation space S1 on the rear side of the bowl portion 6 of the toilet body 2, the toilet body side connection is made. The periphery of each of the connecting part between the spud 50 and the connecting pipe member 52 that can be expanded and contracted, and the connecting part between the connecting pipe member 52 and the tank side connecting part 56 is covered with the toilet body 2 and the water storage tank 20. Even if the operator cannot directly access the connecting pipe member 52 before assembling the water storage tank 20 in the predetermined installation space S1 behind the bowl portion 6 of the toilet body 2, One end (front end) of the connecting pipe member 52 can be easily and securely connected to the other end (rear end) of the spud 50 in a watertight manner, and the other end (upper end) of the connecting pipe member 52 is connected to the tank side in advance. Easily and reliably with respect to the one end parts 56 (the lower end) can be connected in a watertight manner. Therefore, after that, the water storage tank 20 is placed in the toilet bowl while maintaining watertightness for each of the connecting portion between the spud 50 and the extendable connecting pipe member 52 and the connecting portion between the connecting pipe member 52 and the tank side connecting portion 56. The main body 2 can be easily assembled at a predetermined installation position on the rear side of the water conduit 14.
Therefore, the water storage tank 20 can be easily and watertightly connected to the toilet body 2.

Further, according to the flush toilet apparatus 1 according to the present embodiment, the connection pipe member 52a of the connection pipe member 52 can be expanded and contracted before the water storage tank 20 is assembled in the predetermined installation space S1. The toilet body side connecting portion (spud 50) and the tank side connecting portion have a second predetermined length (length d2 when extended) that is longer than the first predetermined length (length d1 when shortened). 56, after the water storage tank 20 is assembled at a predetermined installation position, the length of the connection conduit 52a is the first predetermined length (the length d1 when shortened) and the toilet body By connecting the side connection portion (spud 50) and the tank side connection portion 56 in a watertight manner, the connection pipe line 52a of the connection pipe member 52 can be expanded and contracted. For this reason, in particular, in a state where the water storage tank 20 is assembled at a predetermined installation position, the length of the connection pipe member 52 and the connection pipe line 52a is simply the first predetermined length (length d1 when shortened). Can be set to Therefore, it is possible to reduce the pressure loss of the washing water flowing in the connection pipe 52a having the first predetermined length (the length d1 when shortening) on the downstream side of the water storage tank 20.
Therefore, since the fall of the suction | inhalation amount of the washing water in the water storage tank 20 by the jet pump effect | action of the jet pump unit 30 in the water storage tank 20 can be suppressed, the fall of jet pump performance can be suppressed.

Furthermore, according to the flush toilet apparatus 1 according to the present embodiment, the length of the connection pipe line 52a of the connection pipe member 52 is the first predetermined length (with the water storage tank 20 assembled in the predetermined installation space S1 ( The water storage tank is provided with a guide portion 61 for guiding the connecting pipe member 52 into a predetermined shape so that the toilet main body side connecting portion (spad 50) and the tank side connecting portion 56 can be connected in a watertight manner with a shortened length d1). In a state before the 20 is assembled at a predetermined installation position, the toilet body side connection portion (spud 50) and the tank side connection portion 56 are simply and securely connected in a watertight manner in advance by the connecting pipe member 52, and then the water storage tank 20 Can be guided in a predetermined shape, and the connection pipe line 52a of the connection pipe member 52 has a first predetermined length (length when shortened). d1 It is possible to reliably set in.
Accordingly, it is possible to reduce the pressure loss of the wash water flowing in the first predetermined length (length d1 when shortened) downstream of the water tank 20 and the jet pump in the water tank 20. Since it is possible to suppress a decrease in the suction amount of the wash water in the water storage tank 20 due to the jet pump action of the unit 30, it is possible to suppress a decrease in jet pump performance.

Further, according to the flush toilet apparatus 1 according to the present embodiment, the connecting pipe member 52 is made of an elastic member, and the posture of the water storage tank 20 in a state in which the flush toilet apparatus 1 is further assembled at a predetermined installation position. By having the fixing device 66 that can fix the water storage tank 20 to the toilet body 2 so as to be maintained in a horizontal state, the water storage tank 20 is placed in the state in which the posture of the water storage tank 20 is maintained in a horizontal state. 2 can be stably fixed.
Therefore, for example, when the reaction force by the connection pipe member 52 acts on the water tank 20 or the tank side connection portion 56 and the water tank 20 is inclined and the water level in the water tank 20 is inclined, the jet pump unit in the water tank 20 is inclined. Since it can suppress that the suction | inhalation amount of the washing water in the water storage tank 20 by 30 jet pump action | operations falls, the fall of jet pump performance can be suppressed.

DESCRIPTION OF SYMBOLS 1 Flush toilet device 2 Toilet body 4 Wash water tank device 6 Bowl part 8 Rim part 10 Drain trap pipe 10a Drain trap pipe inlet 14 Water conduit 14a Water inlet 16 Water outlet 18 Water supply pipe 20 Water storage tank ( tank)
20a Water tank inner front surface 20b Water tank bottom surface 20c Water tank rear side and right and left bases 20d Tank fixing slot 20e Water tank outer front surface 22 Constant flow valve 24 Main valve 26 Water supply valve device 28 Vacuum break Valve 30 Jet pump unit 32 Operation lever 34 Water supply pipe 36 Jet nozzle 38 Flow path switching valve 40 Throat pipe 40a Suction port 40b Outlet 42 Toilet washing flow path 44 Tank water storage path 46 Drive shaft 48 Float 50 Spud (toilet body) Side connection)
52 Stretchable connecting pipe member (connecting member, elastic member)
52a Connection pipe line 52b Upper end part of connection pipe member 54a Band 54b Band 56 Tank side connection part 56a Tank side connection pipe line 58 Reservoir tank step part 58a Reservoir tank step part connection port 58b Reservoir tank step part upper end part 58c Outer wall portion of stepped portion of water storage tank 58d Upper side wall portion of stepped portion of water storage tank 60 Throat pipe side connection portion 61 Guide portion 61a Lower side surface of guide portion 62 Bottom surface of water storage tank installation space on the rear side of toilet body 62a Mounting hole 64 Force distribution part 66 Fixing device (fixing part)
68 Rubber bushing 70 Flexible member 72 Bolt 74 Washer 76 Spring washer 78 Bolt operation part 80 Upper edge of the front side of the installation space of the water storage tank on the rear side of the toilet body 82 Tank lid A1 Two water storage tanks in the left-right direction in plan view Central axis to equally divide A2 Central axis to bisect the water storage tank in the front-rear direction in plan view A3 Central axis to the connection pipe line of the connection pipe member DWL Minimum water level (dead water line)
d1 Length when the connecting pipe is shortened (first predetermined length)
d2 Length when connecting pipe is extended (second predetermined length)
F1 Operation area surface F2 Front area surface L1 Reservoir push-in depth confirmation line L2 Toilet body confirmation line R1 Bending portion of the central axis of the connection pipe line of the connection pipe member S1 Installation space for the water storage tank on the rear side of the toilet body WL0 Full water level

Claims (4)

A flush toilet device for washing toilet bowl with wash water supplied by a jet pump action to discharge filth,
A toilet body provided with a bowl portion for receiving filth, and a water conduit for guiding washing water to the bowl portion;
A tank that is assembled at a predetermined installation position on the rear side of the bowl portion of the toilet body, stores a part of the wash water supplied from the water supply source, and supplies the wash water to the water conduit of the toilet body. A jet pump unit disposed at least partially submerged therein, the jet pump unit having a jet nozzle for injecting cleaning water supplied from the water supply source, and a suction port at one end. And a throat pipe formed at the other end with an outlet that allows the washing water to flow out toward the water conduit of the toilet body, and the jet nozzle is washed from the suction port of the throat pipe toward the inside. By jetting water, the jet pump that increases the flow rate of the cleaning water flowing in the throat pipe more than the flow rate of the cleaning water sprayed from the jet nozzle. By inducing action, and the tank is the wash water of increased flow rate to supply toward the water conduit of the toilet body from the throat pipe,
A toilet body side connection part that is provided on the rear side of the water conduit of the toilet body, and that forms a toilet body side connection conduit having one end provided separately or separately from the water conduit;
One end is connected to the other end of the toilet body side connection portion in a watertight manner, and a connection member that forms a connection conduit that can communicate with the toilet body side connection conduit therein,
A cylinder provided in a part of the tank, one end of which is watertightly connected to the other end of the connection member, and in which a tank-side connection pipe that can communicate with the connection pipe of the connection member is formed. A tank-like connection portion,
Each of the toilet body side connecting portion, the connecting member, and the tank side connecting portion can be accessed by an operator in a state before the tank is assembled at the predetermined installation position. One end of the member is watertightly connectable to the other end of the toilet body side connecting portion, and the other end of the connecting member is preliminarily connectable to one end of the tank side connecting portion, After the toilet body side connection part and the tank side connection part are connected to each other in a watertight manner via the connection member, the tank can be assembled at the predetermined installation position, and
In the state where the tank is assembled at the predetermined installation position, each of the connecting portion between the toilet body side connecting portion and the connecting member, and the connecting portion between the connecting member and the tank side connecting portion is watertight. The flush toilet apparatus is characterized in that each of the surroundings is covered with the toilet body and the tank so that an operator cannot directly access them.   The connecting member is connected to the toilet body side connecting portion with a second predetermined length in which the length of the connecting conduit is longer than the first predetermined length before the tank is assembled at the predetermined installation position. After the tank side connection portion is connected in a watertight manner, the length of the connection pipe line is the first predetermined length in the state where the tank is assembled at the predetermined installation position. 2. The flush toilet apparatus according to claim 1, wherein the tank-side connecting portion is connected in a watertight manner so that the connection pipe can be expanded and contracted.   Further, the toilet main body side connection portion and the tank side connection portion can be connected in a watertight manner with the length of the connection pipe line being the first predetermined length in a state where the tank is assembled at the predetermined installation position. The flush toilet apparatus according to claim 2, further comprising a guide portion for guiding the connecting member into a predetermined shape.   The connecting member is formed of an elastic member, and the flush toilet apparatus further includes the tank mounted on the toilet body so that the tank is maintained in a horizontal state in a state where the tank is assembled at the predetermined installation position. 4. The flush toilet apparatus according to claim 3, further comprising a fixing portion that can be fixed to the flush toilet apparatus.

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