JP7344439B2 - flush toilet - Google Patents

Description

TECHNICAL FIELD The present invention relates to a flush toilet, and particularly to a flush toilet that is flushed with flushing water and discharges waste.

Conventionally, flush toilets that are flushed with flush water and discharged waste have been used, for example, as known in Patent Documents 1 and 2, flush water supplied from a flush water source is supplied to a rim conduit of the toilet body. A toilet bowl is known in which a flushing water supply pipe is connected between a flushing water source and the toilet bowl body.
First, in the conventional flush toilet described in Patent Document 1, the flush water supply pipe connecting the flush water source (water storage tank) and the toilet main body is made of an expandable and contractible bellows-shaped hose member. This makes it possible to easily assemble the water storage tank and the toilet main body by expanding and contracting the wash water supply pipe during construction when the water storage tank is assembled to the toilet main body.
Next, in the conventional flush toilet described in Patent Document 2, the downstream side of the flush water supply pipe is connected to the inlet of the water conduit in the toilet main body (the opening in the rear side wall of the water conduit). Specifically, the wash water supply pipe includes a water supply pipe and an outer cylindrical pipe coaxially extending outside the water supply pipe.
The water supply pipe also includes, at its distal end side, an inner cylindrical portion that can be inserted into an opening in the rear side wall of the water conduit of the toilet bowl body, and a locking portion that widens further than the opening at the distal end side of the inner cylindrical portion. It is equipped with
Furthermore, a flange is provided on the distal end side of the outer cylindrical portion, and this flange is formed to be wider than the opening on the outside of the opening in the rear side wall of the water conduit of the toilet main body.
As a result, the flange of the outer cylinder part and the locking part in the opening of the rear side wall of the water conduit of the toilet main body can sandwich the rear side wall of the water conduit through the packing, and the flush water supply pipe can be connected to the toilet main body. It is designed to be fixed to the opening of the water conduit.

Japanese Patent Application Publication No. 2017-218789 Patent No. 5110865 (Japanese Patent Application Laid-Open No. 2008-144454)

However, in the above-mentioned conventional flush toilet in which the flush water supply pipe is connected between the flush water source and the toilet main body, pressure loss of the flush water passing through the flush water supply pipe and the exit of the flush water supply pipe A recent challenge has been how to reduce the pressure loss of flushing water passing through the inlet (opening) of the water conduit in the toilet bowl body to which the main body of the toilet is connected.
In addition, especially when installing the outlet of the flush water supply pipe to the inlet (opening) of the water conduit in the toilet body, it is difficult for the installer to access the inside of the inlet (opening) of the water conduit, and the front side of the toilet body The installer cannot visually check the connection between the outlet of the flush water supply pipe on the wall (back wall) side of the water conduit on the back side and the inlet (opening) of the water conduit in the main body of the toilet. There is a problem in that it is also a cause of defects.
Furthermore, in ceramic toilet bodies, uneven surfaces are formed on the wall surface that forms the inlet (opening) of the water conduit in the toilet body, to which the outlet of the flush water supply pipe is connected, due to variations due to manufacturing errors unique to ceramics. This causes a problem in that the outlet part of the flush water supply pipe and the inlet part (opening) of the water conduit in the toilet main body are not properly fixed to each other.
Therefore, when assembling the flush water supply pipe to the inlet (opening) of the water conduit in the toilet body, how should the outlet of the flush water supply pipe and the inlet (opening) of the water conduit in the toilet body be connected and fixed? How to do this simply and reliably has become a challenge in recent years.

Therefore, the present invention has been made to solve the above-mentioned problems of the prior art and the problems that have been demanded in recent years, and it is possible to easily and reliably assemble a flush water supply pipe to a ceramic toilet body. The purpose is to provide a flush toilet that can improve workability.

In order to solve the above-mentioned problems, the present invention provides a flush toilet that is flushed with flush water and discharges filth, which includes a flush water source that supplies flush water, a bowl portion that receives filth, and a bowl portion of the bowl portion. A ceramic toilet body including a rim portion formed on an upper edge, a rim water conduit provided in the rim portion and guiding cleansing water to the bowl portion, and between the flush water source and the toilet body. A wash water supply pipe is connected to the wash water source and supplies the wash water supplied from the wash water source to the rim conduit of the toilet main body, and an outlet of the wash water supply pipe is connected to the toilet main body. a pipe connecting and fixing device that is fixed in a connected state to the inlet of the rim conduit, the pipe connecting and fixing device being installed at the outlet of the washing water supply pipe and fixed at the inlet of the rim conduit. a nozzle part that can be inserted into the rim water conduit from an opening; and a nozzle part that is slidably and swingably attached to the nozzle part and inserted into the rim water conduit from the entrance of the rim water conduit together with the nozzle part. an inner holding member capable of holding the nozzle part from inside the rim water conduit in a state in which the nozzle part is inserted into the rim water conduit from an inlet of the rim water conduit; an outer holding member that can be held from the outside of the toilet main body, and each of the nozzle part and the inner holding member has the pipe connection fixing device attached to the inlet of the rim conduit of the toilet main body. In this case, each of the inner holding members is provided with a holding portion that slidably and swingably holds the inner holding member with respect to the nozzle portion.
In the present invention configured as described above, when a flush water supply pipe connecting a flush water source and a ceramic toilet body is assembled to the toilet body during installation work of a flush toilet, etc., the pipe connection fixing device allows The outlet portion of the flush water supply pipe is connected and fixed to the inlet portion of the rim conduit of the toilet main body.
Specifically, first, the inner holding member slides and swings with respect to the nozzle part by the respective holding parts of the nozzle part and the inner holding member of the pipe connection fixing device provided at the outlet part of the cleaning water supply pipe. Can be installed.
Next, place the holding part of the inner holding member against the holding part of the nozzle part so that the inner holding member can be inserted into the rim water conduit through the opening of the inlet of the rim water conduit of the toilet main body together with the nozzle part. and slide it relative to each other.
Thereafter, a part of the inner holding member is swung and tilted until it comes into contact with the nozzle part. As a result, the inner holding member of the tube connection fixing device is temporarily fixed to the nozzle portion. Then, both the nozzle part and the inner holding member can be inserted through the opening of the inlet of the rim water conduit.
Next, when the entire inner holding member of the pipe connection fixing device passes through the entrance of the rim water conduit together with the nozzle part and is inserted into the rim water conduit, the inner holding member is temporarily fixed to the nozzle part. The inner holding member is released from the held state and swings again, and almost the entire inner holding member comes into contact with the inner wall surface forming the opening of the inlet portion within the rim water conduit.
As a result, even if the installer on the front side of the toilet main body cannot visually see the inner holding member inserted into the rim water conduit from the opening of the inlet of the rim water conduit from inside the rim water conduit 2d. The nozzle portion can be easily held from inside the rim water conduit by the inner holding member 46.
Then, by holding the nozzle part from the outside of the toilet bowl body by the outer holding member of the pipe connection fixing device, the rim water conduit is held in a state where the inner holding member is inserted into the rim water conduit from the opening of the inlet of the rim water conduit. The nozzle portion is reliably fixed (locked) to the inner wall surface of the rim water conduit through the inner holding member.
As a result, it is difficult to clean the entrance of the rim water channel of a ceramic toilet body that has manufacturing errors and the inner wall surface of the rim water channel that forms the opening (the ceramic wall surface that has unevenness due to manufacturing errors). The outlet part of the water supply pipe can be easily and reliably fixed in a connected state.
Therefore, with the pipe connection and fixing device, the flush water supply pipe can be easily and reliably assembled to the ceramic toilet main body, and the workability of the flush toilet can be improved.

In the present invention, preferably, the inner holding member includes an annular portion whose maximum external dimension is larger than the maximum dimension of the opening cross section of the inlet of the rim water conduit, and the annular portion is provided with a swing axis extending in a direction perpendicular to the axial direction of the nozzle section, and is swingable relative to the nozzle section about this swing axis.
In the present invention configured as described above, when inserting the nozzle part into the opening of the inlet of the rim water conduit, the annular part of the inner holding member is swung about the swing axis until it comes into contact with the nozzle part. It can be moved and tilted. Thereby, the inner holding member can be temporarily fixed to the nozzle part in a posture (tilted posture) in which it can be inserted together with the nozzle part.
Therefore, even if the maximum external dimension of the annular part of the inner holding member is set larger than the maximum dimension of the opening cross section of the inlet of the rim water conduit, both the nozzle part and the inner holding member are connected to the inlet of the rim water conduit. can be easily inserted through the opening.
In addition, when the entire inner holding member passes through the entrance of the rim water conduit together with the nozzle part and is inserted into the rim water conduit, the annular part of the inner holding member is temporarily fixed to the nozzle part. It is released from the suspended state and can swing again around the swing axis.
At this time, since the maximum external dimension of the annular part of the inner holding member is larger than the maximum dimension of the opening cross section of the inlet part of the rim water conduit, almost the entire annular part of the inner holding member is inside the rim water conduit at the inlet part. It is possible to contact the inner wall surface (ceramic surface) forming the opening in a state where it is not easily affected by unevenness due to manufacturing errors of the ceramic.
This makes it possible to reliably fix (lock) both the nozzle part and the inner holding member to the inner wall surface (ceramic surface) of the rim water conduit, making it difficult for them to come off.
As a result, when assembling the flush water supply pipe into the ceramic toilet body, both the nozzle part and the inner holding member can be easily inserted into the opening of the inlet of the rim water conduit, and can be easily removed after insertion. It is possible to provide a pipe connection fixing device that makes the pipe connection difficult.

In the present invention, preferably, the holding portion of the inner holding member includes a pair of holding protrusions provided on the inner circumferential side of the annular portion to face each other so as to include the swing axis, and The holding part of the nozzle part includes a first holding groove part formed along the circumferential direction of the outer peripheral surface of the nozzle part and slidably and rotatably holding each of the pair of holding protrusions, and the first holding groove part. A second holding groove is formed in the axial direction of the nozzle part from one end of the groove and slidably and rotatably holds each of the pair of holding protrusions.
In the present invention configured as described above, when assembling the flush water supply pipe to the toilet main body, each of the pair of holding protrusions of the inner holding member is in advance attached to either the first holding groove part or the second holding groove part of the nozzle part. They can be easily attached to each other, improving ease of assembly.
Each of the pair of holding protrusions of the inner holding member is slidably and rotatably held along the first holding groove or the second holding groove of the nozzle part. Thereby, for example, each of the pair of holding protrusions of the inner holding member can be slid in the circumferential direction of the nozzle part along the first holding groove, and the axis of the nozzle part can be slid along the second holding groove. Since the inner holding member can be slid in the direction, the relative position of the inner holding member with respect to the nozzle portion can be easily adjusted.
Further, each of the pair of holding protrusions of the inner holding member can be rotated in the first holding groove or the second holding groove of the nozzle part, and the annular part of the inner holding member can be swung relative to the nozzle part. be able to. Thereby, the posture (inclined posture and angle of inclination) of the annular portion of the inner holding member with respect to the nozzle portion can be easily adjusted.

In the present invention, preferably, the holding groove of the nozzle part further includes a third holding groove cut out in a curved shape along the circumferential direction of the outer peripheral surface of the nozzle part, and the third holding groove part This makes it possible to hold a portion of the annular portion of the inner holding member in a swung state other than the holding protrusion.
In the present invention configured as described above, when inserting the inner holding member together with the nozzle portion into the rim water conduit from the opening of the inlet of the rim water conduit, the annular portion of the inner holding member other than the holding protrusion is removed. The part swings to the third holding groove part of the nozzle part and is held in an inclined state.
As a result, when the nozzle part and the inner holding member are inserted into the inlet opening of the rim conduit, the maximum dimension of the cross section perpendicular to the axial direction of these inserted parts is larger than the size of the inlet opening of the rim conduit. Can be made smaller.
Therefore, even if the maximum external dimension of the annular part of the inner holding member is set larger than the size of the opening of the inlet of the rim water conduit, both the nozzle part and the inner holding member can be moved smoothly from the opening of the inlet of the rim water conduit. Since it can be inserted into the pipe, construction efficiency can be improved.

In the present invention, preferably, the annular portion of the inner holding member has an opening cross section in which the inside thereof is formed into a generally elongated hole shape, a first central axis extending in the longitudinal direction of the opening cross section, and a first central axis line extending in the longitudinal direction of the opening cross section. a second central axis extending in the width direction perpendicular to the longitudinal direction of the annular part, and the swing axis is eccentric with respect to the second central axis of the annular part. is set to.
In the present invention configured in this way, the generally elongated opening cross section of the annular portion of the inner holding member has a first center axis in the longitudinal direction thereof, and a cross section of the annular portion that bisects the first center axis in the longitudinal direction. A second central axis extends in the width direction perpendicular to the longitudinal direction, and a swing axis of the annular portion of the inner holding member is eccentric with respect to the second central axis.
As a result, when inserting the inner holding member and the nozzle part into the opening of the inlet of the rim water conduit, the pivot axis of the entire inner holding member is adjusted until a part of the annular part of the inner holding member comes into contact with the nozzle part. It can be made easier to swing to the center.
Therefore, even if the maximum external dimension of the annular part of the inner holding member is set larger than the maximum dimension of the opening cross section of the inlet of the rim water conduit, the inner holding member and the nozzle part are It can be smoothly inserted into the state before being inserted into the device.
Furthermore, even when the entire inner holding member passes through the entrance of the rim water conduit together with the nozzle part and is inserted into the rim water conduit, the annular part of the inner holding member is temporarily fixed to the nozzle part. This allows the entire inner holding member to be easily swung again about the swiveling axis.
Thereby, both the nozzle portion and the inner holding member can be smoothly fixed (locked) to the inner wall surface (ceramic surface) of the rim water conduit, making it difficult for them to come off.

In the present invention, preferably, in the toilet main body, all of the wash water supplied from the wash water source to the wash water supply pipe flows from the inlet of the rim water conduit into the bowl portion through the rim water conduit. configured to be supplied.
In the present invention configured in this manner, all of the flushing water supplied from the flushing water source to the flushing water supply pipe flows from the inlet of the rim conduit into the bowl portion through the rim conduit. Since the rim water conduit is configured to be supplied with water, the size of the opening at the inlet of the rim conduit can be set relatively large.
As a result, the size of the cross section of the water passageway and spout of the nozzle member connected to the opening of the inlet of the rim waterway can be set large, so that the passage through the water passageway and water spout of the nozzle member can be set large. The pressure loss of cleaning water can be reduced.
Furthermore, the pipe connection and fixing device can have a simple structure in which the outlet of the wash water supply pipe can be easily connected and fixed to the opening of the inlet of the rim conduit.
As a result, the flush water supply pipe can be easily and reliably assembled into the rim conduit of the ceramic toilet main body, and workability can be improved.

According to the flush toilet of the present invention, the flush water supply pipe can be easily and reliably assembled to the ceramic toilet main body, and workability can be improved.

FIG. 1 is a schematic perspective view of a flush toilet according to an embodiment of the present invention, viewed diagonally from behind and from above. 1 is an overall configuration diagram of a flush toilet according to an embodiment of the present invention. 1 is a partially enlarged plan view of a tank unit of a flush toilet according to an embodiment of the present invention; FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3. FIG. FIG. 1 is an exploded perspective view of a pipe connection and fixing device for a flush toilet according to an embodiment of the present invention. FIG. 2 is an enlarged exploded perspective view of a nozzle member and an inner holding member in a pipe connection and fixing device for a flush toilet according to an embodiment of the present invention. FIG. 2 is a right side view of the nozzle member and inner holding member of the pipe connection fixing device for a flush toilet according to an embodiment of the present invention, as seen from the right side with respect to the rear side of the toilet main body, and the inner holding member is attached to the nozzle member. The state before being swung (the state before being tilted) is shown. FIG. 2 is a right side view of the nozzle member and inner holding member of the pipe connection fixing device for a flush toilet according to an embodiment of the present invention, as seen from the right side with respect to the rear side of the toilet main body, and the inner holding member is attached to the nozzle member. This shows the state in which it is swung (tilted). In the nozzle member and inner holding member of the pipe connection and fixing device for a flush toilet according to an embodiment of the present invention, the state is shown before the holding protrusion of the inner holding member is assembled into the holding groove (circumferential groove) of the nozzle member. In the nozzle member and inner holding member of the pipe connection and fixing device for a flush toilet according to an embodiment of the present invention, after the holding protrusion of the inner holding member is assembled into the holding groove (circumferential groove) of the nozzle member, the circumferential direction Shows the state in which it is being slid along the groove. In the nozzle member and inner holding member of the pipe connection fixing device for a flush toilet according to an embodiment of the present invention, the holding protrusion of the inner holding member is slid along the circumferential groove of the nozzle member to a corner of the groove. After that, it is shown sliding along the axial groove. In the nozzle member and inner holding member of the flush toilet pipe connection fixing device according to an embodiment of the present invention, the holding protrusion of the inner holding member is slid along the axial groove of the nozzle member to the tip of the groove. The figure shows a state in which a part of the annular portion of the inner holding member is fitted into the swing regulating groove of the nozzle member. In the nozzle member and the inner holding member of the pipe connection and fixing device for a flush toilet according to an embodiment of the present invention, when inserted into the opening of the inlet of the rim conduit of the toilet main body, It is a perspective view seen from the rear side. FIG. 2 is a perspective view of the pipe connection and fixing device for a flush toilet according to an embodiment of the present invention when the nozzle member and the inner holding member have been assembled, as seen from the inside of the water conduit of the toilet main body.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A flush toilet according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
First, FIG. 1 is a schematic perspective view of a flush toilet according to an embodiment of the present invention, viewed diagonally from behind and from above. Further, FIG. 2 is an overall configuration diagram of a flush toilet according to an embodiment of the present invention.
As shown in FIGS. 1 and 2, a flush toilet 1 according to an embodiment of the present invention includes a toilet bowl body 2 made of ceramic and a tank device 4 (flushing water source) provided on the rear side thereof. There is.
The toilet main body 2 also includes a bowl part 2a for receiving waste, a drain trap part (drain trap pipe 2b) extending from the bottom of the bowl part 2a and discharging waste in the bowl part 2a, and an upper edge of the bowl part 2a. A rim portion 2c formed in the rim portion 2c is provided.

Next, as shown in FIGS. 1 and 2, the tank device 4 includes a water supply pipe 6 and a water discharge pipe 8 connected to the upstream side and the downstream side, respectively.
The upstream side of the water supply pipe 6 is connected to an external water supply source (not shown) such as a water supply. On the other hand, the downstream side of the water supply pipe 6 is connected to a water storage tank 10 of the tank device 4. With these, wash water is supplied from the water supply pipe 6 to the water storage tank 10.
Further, the water supply pipe 6 is provided with a water stopcock 12 and a valve unit 14, respectively, from the upstream side to the downstream side.
Further, the valve unit 14 includes a constant flow valve 16 provided in the water supply pipe 6, and an electromagnetic valve 18 that opens and closes an on-off valve (diaphragm valve 17) provided downstream of the constant flow valve 16.

Next, as shown in FIGS. 1 and 2, the tank device 4 further includes a connection unit 20 connected to the downstream side of the valve unit 14 of the water supply pipe 6, and a connection unit 20 connected to the downstream side of this connection unit 20. and a tank unit 22 including a water storage tank 10.
In the valve unit 14, the flow rate of the cleaning water in the water supply pipe 6 is adjusted to be constant by a constant flow valve 16.
Thereafter, when the solenoid valve 18 is electromagnetically opened and the flow path of the water supply pipe 6 is opened by the on-off valve (diaphragm valve 17), the wash water in the water supply pipe 6 passes through the connection unit 20 and flows into the tank unit 22. It is now being supplied.

As shown in FIG. 2, the connection unit 20 includes a housing 24, an overflow pipe 26, and a check valve 28.
Further, the lower opening 24a of the housing 24 is removably connected to the upper opening 10a of the water storage tank 10 of the tank unit 22.

Next, the overflow pipe 26 connects the overflow port 24b provided in a part of the side wall of the housing 24 and the water discharge pipe 8.
The water discharge pipe 8 is a connection pipe (wash water supply pipe) connected to the pump 30 of the tank device 4 on its upstream side, and is connected to the rim water conduit 2d inside the rim portion 2c of the toilet main body 2 on its downstream side. There is.
Further, the check valve 28 is provided at the overflow port 24b, and allows the cleaning water in the housing 24 to flow into the overflow pipe 26 from the overflow port 24b, while the check valve 28 allows the cleaning water in the overflow pipe 26 to flow into the overflow pipe 26 from the overflow port 24b. 24.

Next, as shown in FIG. 2, the tank unit 22 includes a water storage tank 10, a pump 30, a float switch 32, and a drain plug 34.
The pump 30 is provided in a part (midway) of a water pipe 36 connected to the upstream side of the water discharge pipe 8. An upstream end 36a of this water pipe 36 is connected to a downstream end 38a of a suction pipe 38 provided inside the water storage tank 10.

When the pump 30 operates, the cleaning water stored in the water storage tank 10 is sucked into the water pipe 36 from the suction pipe 38, and then is pumped through the pump 30 to the water discharge pipe 8. There is.
Thereby, all of the wash water supplied from the water storage tank 10 to the water discharge pipe 8 by the pump 30 is supplied into the rim conduit 2d from the inlet 2e of the rim conduit 2d.
The flushing water in the rim conduit 2d is then discharged into the bowl portion 2a from the rim spout 2f at the downstream end of the rim conduit 2d, so that toilet bowl cleaning (so-called toilet bowl cleaning using 100% rim water discharge) is performed. It has become.
That is, each of the water flow pipe 36 and the water discharge pipe 8 functions as a wash water supply pipe that supplies the wash water pumped by the pump 30 from the water storage tank 10 to the toilet main body 2.

The float switch 32 detects the water level in the water storage tank 10, and the opening/closing operation of the solenoid valve 18 of the valve unit 14 is controlled by the controller C based on the water level in the water storage tank 10 detected by the float switch 32. It has become so.
Further, the operation of the pump 30 is also controlled by the controller C based on the water level in the water storage tank 10 detected by the float switch 32.
For example, when the water level in the water storage tank 10 detected by the float switch 32 is below a predetermined level, the electromagnetic valve 18 is opened, the water supply pipe 6 is opened, and the pump 30 is operated.
When the water level in the water storage tank 10 reaches a predetermined water level, the electromagnetic valve 18 is closed, the water supply pipe 6 is closed, and the pump 30 is stopped.

The drain plug 34 is provided on the bottom surface of the water storage tank 10. This drain valve 34 is always closed during normal use, and is opened as necessary so that the wash water in the water storage tank 10 can be discharged to the outside.

Next, FIG. 3 is a partially enlarged plan view of a tank unit of a flush toilet according to an embodiment of the present invention. Further, FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3.
First, as shown in FIGS. 1 to 4, the water discharge pipe 8 is made of a flexible hose member such as a flexible hose, and has an outlet portion 8a (an outlet portion of the wash water supply pipe) which is the downstream end of the water discharge pipe 8. ) is provided with a pipe connection fixing device 40, the details of which will be described later.
When assembling the tank device 4 to the ceramic toilet main body 2 during installation work of the flush toilet 1, etc., the pipe connection fixing device 40 is used to connect the outlet portion 8a of the water discharge pipe 8 (the outlet portion of the flush water supply pipe). ) is fixed in a state connected to the inlet 2e of the rim conduit 2d (inlet of the rim conduit) located on the rear side of the rim portion 2c of the toilet main body 2.

Next, details of the tube connection fixing device 40 will be explained with reference to FIGS. 4 to 7B.
FIG. 5 is an exploded perspective view of a pipe connection and fixing device for a flush toilet according to an embodiment of the present invention.
As shown in FIGS. 4 and 5, the tube connection fixing device 40 includes a nozzle member 42, an outer holding member 44, and an inner holding member 46, respectively.
First, as shown in FIGS. 4 and 5, the nozzle member 42 is a generally cylindrical member, and its upstream end is connected to the outlet portion 8a of the water discharge pipe 8 so as to communicate with the interior of the water discharge pipe 8. . That is, inside the nozzle member 42, a single passageway 42a, through which the cleaning water flowing out from the outlet portion 8a of the water discharge pipe 8 passes, is formed in a substantially cylindrical shape.
Further, the downstream end of the water passage 42a of the nozzle member 42 functions as a water spout 42b for discharging the cleaning water supplied from the water spout 8 to the water passage 42a into the rim water conduit 2d.
Furthermore, as shown in FIG. 4, the diameter (water spout diameter D1) of the circular opening cross section of the water spout 42b of the nozzle member 42 is such that the nozzle member 42 can be inserted into the opening of the inlet 2e of the rim water conduit 2d. It is set.

Next, as shown in FIGS. 4 and 5, the outer holding member 44 is composed of a plurality of members 48, 50, 52, and 54 provided concentrically on the outside of the nozzle member 42, and the outer holding member 44 is configured to hold the nozzle member 42 against the toilet main body. 2 can be held from the outside.
Specifically, the outer holding member 44 includes a nut member 48, a pressing member 50, a packing 52, and an O-ring 54 from the outer side in the axial direction toward the inner side or from the outer circumferential side to the inner circumferential side. Each is equipped with
A portion of the inner peripheral surface of the nut member 48 is screwed onto the outer peripheral surface of the nozzle member 42, so that the nozzle member 42 can be held from the outside of the toilet main body 2.
The holding member 50 is a generally annular member having a flange portion 50a on its outer peripheral surface. A portion of the holding member 50, including its axial end, is inserted into the nut member 48, so that it can hold the axially intermediate portion of the nozzle member 42 from the outer circumferential side. There is.
The packing 52 is attached inside a flange portion 50a (see FIG. 4) that protrudes outward from the outer peripheral surface of the holding member 50. These pressing member 50 and packing 52 are watertightly attached to a wall surface (rear wall surface 2g of rim portion 2c) that forms the opening of the inlet 2e of the rim water conduit 2d in the toilet main body 2.
The O-ring 54 is attached to the outer peripheral surface of the axially intermediate portion of the nozzle member 42 . The outer peripheral side of this O-ring 54 is held watertight by the inner peripheral surface of the pressing member 50.

Next, as shown in FIGS. 4 and 5, the inner holding member 46 is a generally annular member attached to the nozzle member 42 so as to be slidable and swingable.
Hereinafter, with reference to FIGS. 4 to 7B, the specific structure of the inner holding member 46 and the inner holding member 46 that allows the inner holding member 46 to slide and swing relative to the nozzle member 42 will be described. The details of the mounting structure between the nozzle member 42 and the nozzle member 42 will be explained.
First, FIG. 6 is an enlarged exploded perspective view of a nozzle member and an inner holding member in a pipe connection and fixing device for a flush toilet according to an embodiment of the present invention.
Next, each of FIGS. 7A and 7B shows the right side of the nozzle member and the inner holding member of the pipe connection and fixing device for a flush toilet according to an embodiment of the present invention, as viewed from the right side with respect to the rear side of the toilet main body. FIG. 3 shows a state before the inner holding member is swung relative to the nozzle member (a state before being tilted) and a state where the inner holding member is swung relative to the nozzle member (a tilted state). ) are shown respectively.

As shown in FIGS. 5 to 7B, each of the nozzle member 42 and the inner holding member 46 includes a pair of holding grooves 56, 58 and a pair of holding protrusions 60, 62, respectively.
These retaining grooves 56, 58 and retaining protrusions 60, 62 fit or engage with each other as female and male sides, respectively, when the pipe connection fixing device 40 is attached to the inlet 2e of the rim conduit 2d of the toilet main body 2. The inner holding member 46 is adapted to function as a holding portion that holds the inner holding member 46 slidably and swingably relative to the nozzle member 42 .
Next, as shown in FIGS. 5 to 7B, the pair of holding grooves 56 and 68 of the nozzle member 42 are provided on the outer circumferential surface of the nozzle member 42 so as to face each other in the radial direction. The shape of each groove is generally L-shaped.
Further, each of the holding grooves 56 and 58 includes circumferential grooves 56a and 58a (first holding groove portions) formed along the circumferential direction on the outer circumferential surface of the nozzle member 42, and circumferential grooves 58a (first holding groove portions) formed on the outer circumferential surface of the nozzle member 42. Axial grooves 56b and 58b (second holding groove portions) are formed along the axial direction from one end of each circumferential groove 56a and 58a for a predetermined length.

Next, as shown in FIGS. 5 to 7B, the inner holding member 46 includes an annular portion 64 formed in a generally annular shape.
This annular portion 64 has an opening cross section S1 (see FIG. 6) whose interior is formed into a generally elongated hole shape, a first central axis C1 extending in the longitudinal direction of this opening cross section S1, and a first central axis C1 extending in the longitudinal direction of the opening cross section S1. The annular portion 64 has a second central axis C2 that is bisected and extends in a direction (width direction) perpendicular to the longitudinal direction of the annular portion 64.
Further, the maximum external dimension L1 (see FIG. 6) of the annular portion 64 is set larger than the maximum dimension (maximum inner diameter D2) of the opening cross section S2 (see FIG. 4) of the inlet 2e of the rim water conduit 2d. L1>D2).
Further, on the inner peripheral side of the annular portion 64 of the inner holding member 46, the above-mentioned pair of holding protrusions 60 and 62 are provided so as to face each other in the width direction of the annular portion 64.
Each holding projection 60, 62 includes a swing axis A1 extending in a direction perpendicular to the axial direction of the nozzle member 42, and each holding projection 60, 62 moves in one direction or the other around this swing axis A1. By rotating, the entire annular portion 64 can swing relative to the nozzle member 42 .
Further, as shown in FIG. 6, the swing axis A1 is set to be eccentric by a predetermined distance (eccentricity distance L2) in the first central axis C1 direction with respect to the second central axis C2 of the annular portion 64. , are set parallel to the second central axis C2.

Next, as shown in FIGS. 5 to 7B, the nozzle member 42 further includes a third holding groove cut out in a curved shape (approximately a crescent shape or an arcuate shape) along the circumferential direction on its outer peripheral surface. A certain holding groove (swing regulating groove 66) is provided.
As shown in FIG. 7B, the swing regulating groove 66 makes it possible to hold a portion of the annular portion 64 of the inner holding member 46 in a swinging state other than the holding protrusions 60 and 62.
More specifically, as shown in FIG. 6, the opening cross section S1 of the annular portion 64 is divided into two opening cross sections (a first opening cross section S3, a second opening cross section S4), the cross-sectional area of the first opening cross-section S3 becomes smaller than the cross-sectional area of the second opening cross-section S4.
At this time, the arched portion (arched portion 64a) of the annular portion 64 forming the first opening cross section S3 having a small cross-sectional area rises in a direction perpendicular to the axial direction of the nozzle member 42, as shown in FIG. 7A. From the standing posture, it swings about the swing axis A1 as shown in FIG. 7B to the swing regulating groove 66, and can be fitted into the swing regulating groove 66 as shown in FIG. 7B. Thereby, the entire inner holding member 46 is temporarily locked in an inclined position relative to the nozzle member 42.
As shown in FIG. 7B, when the entire inner holding member 46 is temporarily locked in an inclined position with respect to the nozzle member 42, the tip side of the nozzle member 42 and the entire inner holding member 46 are It can be inserted into the rim water conduit 2d from the opening of the inlet 2e of the rim water conduit 2d.

Next, with reference to FIGS. 8A to 8F, a method of assembling the pipe connection fixing device 40 to the opening of the inlet 2e of the rim conduit 2d of the toilet body 2 during installation of the flush toilet 1 will be explained. do.
Each of FIGS. 8A to 8F shows the assembly work when assembling the pipe connection fixing device to the inlet opening of the rim conduit of the toilet main body during installation work of a flush toilet according to an embodiment of the present invention. The nozzle member and inner holding member of the pipe connection fixing device are shown in each state from before the assembly work is started until the assembly work is completed.
First, as shown in FIG. 8A, when assembling the water discharge pipe 8 to the ceramic toilet main body 2, after inserting the nozzle member 42 into the annular part 64 of the inner holding member 46, the pair of holding members of the inner holding member 46 The protrusions 60 and 62 are respectively inserted and fitted into the respective circumferential grooves 56a and 58a of the nozzle member 42.

Next, as shown in FIG. 8B, the holding protrusions 60 and 62 of the inner holding member 46 slide along the circumferential grooves 56a and 58a of the nozzle member 42 from the distal end side to the proximal end side in the circumferential direction. and is moved to the corner of each circumferential groove 56a, 58a and each axial groove 56b, 58b.
Then, as shown in FIG. 8C, each of the holding protrusions 60 and 62 of the inner holding member 46 is slid along each of the axial grooves 56b and 58b of the nozzle member 42, and the axial direction of each of the axial grooves 56b and 58b is Move to the tip of the
At this time, the entire annular portion 64 (arch portion 64a) of the inner holding member 46 is also in a state where it can swing around the swing axis A1.

Next, as shown in FIG. 8D, each of the holding protrusions 60 and 62 of the inner holding member 46 rotates about the swing axis A1 in each of the axial grooves 56b and 58b of the nozzle member 42. As shown in FIG.
The entire annular portion 64 (arch portion 64a) of the inner holding member 46 is tilted (lowered) by swinging relative to the nozzle member 42, and is then fitted into the swing regulating groove 66. .
As a result, the annular portion 64 (arch portion 64a) of the inner holding member 46 is tilted (lowered) toward the nozzle member 42 than when the assembly work was started, and the entire inner holding member 46 is tilted toward the nozzle member 42. It is held in a temporarily locked state.
In addition, in a state where the entire inner holding member 46 is temporarily locked to the nozzle member 42, both the nozzle member 42 and the inner holding member 46 are inserted into the opening of the inlet 2e of the rim water conduit 2d. It becomes possible.

Next, as shown in FIG. 8E, both the nozzle member 42 and the inner holding member 46 in the inclined (lowered) position in a state where it is temporarily locked are attached to the rear wall surface 2g of the rim portion 2c of the toilet main body 2. It is inserted into the entrance 2e of the rim conduit 2d from the outside.
FIG. 8F is a perspective view of the pipe connection and fixing device for a flush toilet according to an embodiment of the present invention, when the nozzle member and the inner holding member have been assembled, as seen from inside the water conduit of the toilet main body.
As shown in FIG. 8F, when the entire inner holding member 46 is inserted into the rim water conduit 2d through the opening of the inlet 2e of the rim water conduit 2d together with the nozzle member 42, the inner holding member 46 is inserted into the rim water conduit 2d. The inner holding member 46 is released from being temporarily fixed to the rim conduit 2d, swings again from the tilted (lowered) position to the standing position (standing position), and almost the entire inner holding member 46 is placed within the rim water conduit 2d. It comes into contact with the inner wall surface 2h forming the opening of the inlet 2e.
Further, the nozzle member 42 is rotated about its axial center axis A2, and the inner holding member 46 is also rotated about its axial center axis A2. As a result, the installer on the front side of the toilet main body can visually see the inner holding member 46 inserted into the rim water channel 2d from the opening of the inlet 2e of the rim water channel 2d from inside the rim water channel 2d. Even without this, it is possible to adjust the degree of contact between the surface of the inner wall surface 2h in the rim water conduit 2d and the contact surface of the inner holding member 46 facing thereto.
Then, while the nozzle member 42 is held from the outside of the toilet main body 2 by the outer holding member 44 , by tightening the nut member 48 screwed onto the nozzle member 42 , the nozzle member 42 is moved through the inner holding member 46 . It is fixed to the inner wall surface 2h in the rim water conduit 2d, and the assembly work is completed.

Next, the operation of the flush toilet 1 according to the embodiment of the present invention described above will be explained with reference to FIGS. 1 to 8F.
According to the flush toilet 1 according to the present embodiment, when installing the flush toilet 1, etc., the water discharge pipe 8 (flush water supply pipe) connected to the pump 30 of the tank device 4 is connected to the ceramic toilet main body 2. When assembled, the outlet 8a of the water discharge pipe 8 can be easily fixed by being connected to the inlet 2e of the rim conduit 2d of the ceramic toilet main body 2 via the pipe connection and fixing device 40.
Specifically, first, the holding portion of the nozzle member 42 (a pair of holding grooves 56, 58) and the holding portion of the inner holding member 46 (a pair of The holding protrusions 60, 62) allow the inner holding member 46 to be easily attached to the nozzle member 42 in a slidable and swingable manner.
Next, the inner holding member 46 is moved so that the inner holding member 46 can be inserted into the rim water conduit 2d from the opening of the inlet 2e of the rim water conduit 2d of the toilet main body 2 together with the nozzle member 42 (tilted attitude). Each of the holding protrusions 60 and 62 can be slid relative to each of the holding grooves 56 and 58 of the nozzle member 42 with ease.
After that, a part of the arch portion 64a of the inner holding member 46 can be easily swung and tilted (lowered) until it comes into contact with the oscillation regulating groove 66 of the nozzle member 42.
As a result, the inner holding member 46 of the tube connection and fixing device 40 is temporarily fixed in an inclined (lowered) position relative to the nozzle member 42 . Then, both the nozzle member 42 and the inner holding member 46 can be inserted from the opening of the inlet 2e of the rim water conduit 2d.
Next, the entire inner holding member 46 of the tube connection fixing device 40 can be easily inserted into the rim water conduit 2d through the opening of the inlet 2e of the rim water conduit 2d together with the nozzle member 42.
After this insertion, the inner holding member 46 can be released from the state where it was temporarily fixed to the nozzle member 42, and is again swung from the tilted (lowered) position to the standing position (standing position). be able to.
Thereby, substantially the entire inner holding member 46 can be easily brought into contact with the inner wall surface 2h forming the opening of the inlet 2e in the rim water conduit 2d (see FIGS. 4 and 8F).
Therefore, for the installer on the front side of the toilet main body, it is impossible to visually see the inner holding member 46 inserted into the rim water conduit 2d from the opening of the inlet 2e of the rim water conduit 2d from inside the rim water conduit 2d. However, the nozzle member 42 can be easily held from inside the rim conduit 2d by the inner holding member 46.
The nozzle member 42 can be held from the outside of the toilet main body 2 by the outer holding member 44 (nut member 48, pressing member 50, packing 52, O-ring 54) of the pipe connection fixing device 40.
As a result, the inner holding member 46 is securely fixed (locked) to the inner wall surface 2h of the rim water channel 2d when inserted into the rim water channel 2d from the opening of the inlet 2e of the rim water channel 2d. I can do it. At the same time, the nozzle member 42 can be reliably fixed (locked) to the inner wall surface 2h of the rim water conduit 2d via the inner holding member 46.
As a result, the inner wall surface 2h of the rim conduit 2d forming the entrance 2e and the opening of the rim conduit 2d of the ceramic toilet main body 2 that has manufacturing errors (that is, the surface shape such as unevenness due to the manufacturing error of the ceramic) The outlet portion 8a of the water discharge pipe 8 can be easily and reliably fixed and assembled to the toilet main body 2 even on a wall surface having variations.
Therefore, the workability of the flush toilet 1 can be improved.

Further, according to the flush toilet 1 according to the present embodiment, when inserting the nozzle member 42 into the opening of the inlet 2e of the rim water conduit 2d, a part of the arch portion 64a of the annular portion 64 of the inner holding member 46 is inserted. The nozzle member 42 can be tilted by swinging about the swing axis A1 until it comes into contact with the swing regulating groove 66 of the nozzle member 42.
As a result, the inner holding member 46 can be temporarily fixed to the swing regulating groove 66 of the nozzle member 42 in an inclined (lowered) position in which the inner holding member 46 can be inserted together with the nozzle member 42 .
Therefore, even if the maximum external dimension L1 of the annular portion 64 of the inner holding member 46 is set larger than the maximum dimension (maximum inner diameter D2) of the opening cross section S2 of the inlet 2e of the rim water conduit 2d, the nozzle member 42 and the inner Both of the holding members 46 can be easily inserted through the opening of the inlet 2e of the rim conduit 2d.
Furthermore, when the entire inner holding member 46 passes through the entrance 2e of the rim water conduit 2d together with the nozzle member 42 and is inserted into the rim water conduit 2d, the annular portion 64 of the inner holding member 46 swings around the nozzle member 42. It is released from the state where it was temporarily fixed to the movement regulating groove 66 and can again swing about the swing axis A1.
At this time, since the maximum external dimension L1 of the annular portion 64 of the inner holding member 46 is larger than the maximum dimension (maximum inner diameter D2) of the opening cross section S2 of the inlet 2e of the rim water conduit 2d, the annular portion 64 of the inner holding member 46 Almost the entirety of the inner wall surface 2h (ceramic surface) forming the opening of the inlet 2e in the rim water conduit 2d can be in contact with the inner wall surface 2h (ceramic surface) in a state where it is not easily affected by unevenness due to manufacturing errors of the ceramic.
This makes it possible to reliably fix (lock) both the nozzle member 42 and the inner holding member to the inner wall surface 2h (porcelain surface) of the rim water conduit 2d, making it difficult for them to come off.
As a result, when assembling the water discharge pipe 8 to the ceramic toilet main body 2, it is easy to insert both the nozzle member 42 and the inner holding member into the opening of the inlet 2e of the rim water conduit 2d. Later, a tube connection fixing device 40 that is difficult to come off can be provided.

Furthermore, according to the flush toilet 1 according to the present embodiment, when assembling the water discharge pipe 8 to the toilet main body 2, each of the pair of holding protrusions 60, 62 of the inner holding member 46 is inserted into the first holding groove portion of the nozzle member 42 in advance. It can be easily attached to either the (circumferential grooves 56a, 58a) or the second holding groove (axial grooves 56b, 58b), thereby improving ease of assembly.
Each of the pair of holding protrusions 60 and 62 of the inner holding member 46 slides along the first holding groove (circumferential grooves 56a, 58a) or the second holding groove (axial grooves 56b, 58b) of the nozzle member 42. It is held movably and rotatably.
As a result, each of the pair of holding protrusions 60 and 62 of the inner holding member 46 can be slid in the circumferential direction of the nozzle member 42 along the first holding groove portions (circumferential grooves 56a and 58a). Since the nozzle member 42 can be slid in the axial direction along the two holding grooves (axial grooves 56b, 58b), the relative position of the inner holding member 46 with respect to the nozzle member 42 can be easily adjusted.
Further, each of the pair of holding protrusions 60 and 62 of the inner holding member 46 can be rotated in the first holding groove (circumferential groove 56a, 58a) or the second holding groove (axial groove 56b, 58b) of the nozzle member 42. The annular portion 64 of the inner holding member 46 can be swung relative to the nozzle member 42.
Thereby, the attitude (standing attitude, or inclined attitude or angle of inclination) of the annular portion 64 of the inner holding member 46 relative to the nozzle member 42 can be easily adjusted.

Further, according to the flush toilet 1 according to the present embodiment, when inserting the inner holding member 46 together with the nozzle member 42 into the rim water conduit 2d from the opening of the inlet 2e of the rim water conduit 2d, the annular shape of the inner holding member 46 A portion of the portion 64 other than the holding protrusions 60 and 62 (arch portion 64a) swings to the third holding groove portion (swing regulating groove 66) of the nozzle member 42, and is held in an inclined (lowered) state.
As a result, when the nozzle member 42 and the inner holding member 46 are inserted into the opening of the inlet 2e of the rim water conduit 2d, the maximum dimension L3 (see FIG. 7B) of the cross section S5 perpendicular to the axial direction of the inserted portions is as follows. It can be made smaller than the maximum inner diameter D2 (see FIGS. 4 and 8E) of the opening of the inlet 2e of the rim water conduit 2d (L3<D2).
Therefore, even if the maximum external dimension L1 of the annular portion 64 of the inner holding member 46 is set larger than the maximum dimension (maximum inner diameter D2) of the opening cross section S2 of the inlet 2e of the rim water conduit 2d (L1>D2), Since both the nozzle member 42 and the inner holding member 46 can be smoothly inserted through the opening of the inlet 2e of the rim water conduit 2d, workability can be improved.

Furthermore, according to the flush toilet 1 according to the present embodiment, the swing axis A1 of the annular portion 64 of the inner holding member 46 is eccentric with respect to the second central axis C2.
As a result, when inserting the inner holding member 46 and the nozzle member 42 into the opening of the inlet 2e of the rim water conduit 2d, a part of the arch portion 64a of the annular portion 64 of the inner holding member 46 swings. The entire inner holding member 46 can be easily swung around the swiveling axis A1 until it comes into contact with the regulation groove 66.
Therefore, even if the maximum external dimension L1 of the annular portion 64 of the inner holding member 46 is set larger than the maximum inner diameter D2 of the opening cross section S2 of the inlet 2e of the rim water conduit 2d, the inner holding member 46 and the nozzle member 42 are Before inserting into the opening of the inlet 2e of the rim water conduit 2d, it can be brought into a state where it can be smoothly inserted.
Further, even when the entire inner holding member 46 passes through the opening of the inlet 2e of the rim water conduit 2d together with the nozzle member 42 and is inserted into the rim water conduit 2d, the annular portion 64 of the inner holding member 46 is inserted into the nozzle member. 42, and the entire inner holding member 46 can be made easier to swing again about the swing axis A1.
Thereby, both the nozzle member 42 and the inner holding member 46 can be smoothly fixed (locked) also to the inner wall surface 2h (ceramic surface) in the rim water conduit 2d, making it difficult for them to come off.

Further, according to the flush toilet 1 according to the present embodiment, all of the flush water supplied from the water storage tank 10 to the water discharge pipe 8 by the pump 30 flows from the inlet 2e of the rim water conduit 2d to the rim water conduit 2d to the bowl. The water is supplied into the section 2a, and toilet bowl cleaning (so-called toilet bowl cleaning using 100% rim water discharge) is performed.
Therefore, the opening size of the inlet 2e of the rim water conduit 2d of the ceramic toilet main body 2 can be set relatively large.
Thereby, the size of the cross section of the passageway 42a and the water spout 42b of the nozzle member 42 connected to the opening of the inlet 2e of the rim waterway 2d can also be set large.
Therefore, the pressure loss of the cleaning water passing through the water passage 42a and the water spout 42b in the nozzle member 42 can be reduced.
Furthermore, since the size of the opening of the inlet 2e of the rim water conduit 2d can be set relatively large, the outlet part 8a of the water discharge pipe 8 can be set to the opening of the inlet 2e of the rim water conduit 2d in the pipe connection fixing device 40. It is possible to have a simple structure that is easy to connect and fix.
As a result, the water discharge pipe 8 can be easily and reliably assembled to the rim conduit 2d of the ceramic toilet main body 2, and workability can be improved.

In this embodiment, a water storage tank 10 is adopted as a washing water source for the water discharge pipe 8 that supplies washing water to the toilet main body 2, and the washing water in this water storage tank 10 is discharged using the pressure compensation of the pump 30. Although the embodiment has been described in which water is supplied from the water pipe 8 to the rim water conduit 2d of the toilet main body 2, the present invention is not limited to this embodiment, and other embodiments may be used as the water source for flushing the water discharge pipe 8.
For example, the form of the washing water source on the upstream side of the water pipe may be a gravity-fed water storage tank, a direct water pressure type that directly uses the water supply pressure of tap water, or a flush water source. A valve type configuration may also be adopted.

1 Flush toilet according to an embodiment of the present invention 2 Toilet main body 2a Bowl part 2b Drainage trap pipe 2c Rim part 2d Rim conduit 2e Inlet of rim conduit (inlet part of rim conduit)
2f Rim spout 2g Rear wall surface of the rim portion 2h Inner wall surface forming the inlet opening in the rim water conduit 4 Tank device (cleaning water source)
6 Water supply pipe 8 Water discharge pipe (washing water supply pipe)
8a Outlet part of water discharge pipe (outlet part of washing water supply pipe)
10 Water storage tank 10a Upper opening 12 Stop valve 14 Valve unit 16 Constant flow valve 17 Diaphragm valve 18 Solenoid valve 20 Connection unit 22 Tank unit 24 Housing 24a Lower opening 24b Overflow port 26 Overflow pipe 28 Check valve 30 Pump (cleaning) water source)
32 Float switch 34 Drain plug 36 Water pipe 36a Upstream end of water pipe 38 Suction pipe 38a Downstream end of suction pipe 40 Pipe connection fixing device 42 Nozzle member (nozzle part)
42a Water flow channel 42b Water spout 44 Outer holding member 46 Inner holding member 48 Nut member (outer holding member)
50 Holding member (outer holding member)
50a Flange portion 52 Packing (outer holding member)
54 O-ring (outer holding member)
56 Retaining groove (retaining part)
56a Circumferential groove (first holding groove)
56b Axial groove (second holding groove)
58 Retaining groove (retaining part)
58a Circumferential groove (first holding groove)
58b Axial groove (second holding groove)
60 Holding protrusion (holding part, holding protrusion)
62 Holding protrusion (holding part, holding protrusion)
64 Annular part of inner holding member 64a Arch part 66 Swing regulating groove (holding part, third holding groove part)
A1 Swing axis A2 Axial center axis of the nozzle member C Controller C1 First center axis extending in the longitudinal direction of the annular portion of the inner holding member C2 Second center axis extending in the width direction of the annular portion of the inner holding member D1 Water spout diameter D2 Maximum internal diameter of the opening cross section of the inlet of the rim water conduit L1 Maximum external dimension of the annular part of the inner holding member L2 Eccentricity distance L3 Maximum dimension of the cross section perpendicular to the axial direction of the nozzle member and inner holding member at the time of insertion S1 Cross section of the opening of the annular portion of the inner holding member S2 Cross section of the opening of the inlet of the rim water conduit S3 First cross section of the opening of the annular portion of the inner holding member S4 Second opening cross section of the annular portion of the inner holding member

Claims (6)

A flush toilet that is flushed with flush water and discharges waste,
a cleaning water source that supplies cleaning water;
A ceramic toilet body comprising a bowl part for receiving filth, a rim part formed on the upper edge of the bowl part, and a rim conduit provided in the rim part to guide wash water to the bowl part. ,
a wash water supply pipe connected between the wash water source and the toilet main body, which supplies the wash water supplied from the wash water source to the rim conduit of the toilet main body;
a pipe connection and fixing device provided at the outlet of the flush water supply pipe and fixing the outlet in a state connected to the inlet of the rim conduit of the toilet main body;
The pipe connection fixing device includes a nozzle part that is provided at the outlet of the washing water supply pipe and that can be inserted into the rim water conduit through an opening of the inlet of the rim water supply pipe;
The nozzle part is slidably and swingably attached to the nozzle part, and is inserted into the rim water conduit from the entrance part of the rim water conduit together with the nozzle part, and the nozzle part is inserted from the inside of the rim water conduit. a retainable inner holding member;
an outer holding member capable of holding the nozzle part from the outside of the toilet main body in a state where the nozzle part is inserted into the rim water conduit from the entrance part of the rim water conduit,
The nozzle portion and the inner holding member each have a structure that allows the inner holding member to slide and swing relative to the nozzle portion when the pipe connection fixing device is attached to the inlet of the rim water conduit of the toilet main body. A flush toilet characterized in that each holding part is provided for holding the flush toilet. The inner holding member includes an annular portion whose maximum external dimension is larger than the maximum dimension of the opening cross section of the inlet of the rim water conduit, and the annular portion is formed on the axis of the nozzle portion. 2. The flush toilet according to claim 1, further comprising a swing axis extending in a direction perpendicular to the direction, and swingable relative to said nozzle part about this swing axis. The holding portion of the inner holding member includes a pair of holding protrusions that are provided on the inner peripheral side of the annular portion so as to be opposed to each other so as to include the swing axis;
The holding portion of the nozzle portion includes a first holding groove portion formed along the circumferential direction of the outer circumferential surface of the nozzle portion and slidably and rotatably holding each of the pair of holding protrusions; The washing large according to claim 2, further comprising: a second holding groove formed in the axial direction of the nozzle part from one end of the holding groove to slidably and rotatably hold each of the pair of holding protrusions. Toilet bowl. The holding groove of the nozzle part further includes a third holding groove cut out in a curved shape along the circumferential direction of the outer circumferential surface of the nozzle part, and the third holding groove part is in a swung state. The flush toilet according to claim 3, wherein a portion of the annular portion of the inner holding member other than the holding protrusion can be held. The annular portion of the inner holding member has an opening cross section in which the inside thereof is formed into a generally elongated hole shape, a first central axis extending in the longitudinal direction of the opening cross section, and a first central axis bisecting the first central axis. a second central axis extending in the width direction perpendicular to the longitudinal direction of the annular part;
The flush toilet according to any one of claims 2 to 4, wherein the swing axis is eccentric with respect to the second central axis of the annular portion. The toilet main body is configured such that all of the flushing water supplied from the flushing water source to the flushing water supply pipe is supplied into the bowl portion from the inlet of the rim conduit through the rim conduit. The flush toilet according to any one of claims 1 to 5.

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