JP3042958B2 - Flush toilet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet. More specifically, the present invention relates to a flush toilet that can easily and easily take out a valve provided in a valve device and perform maintenance and the like when a failure occurs.

[0002]

2. Description of the Related Art Conventionally, various types of flush toilets having various configurations and structures have been used in toilet rooms of houses and the like, for example, siphon type or siphon jet type flush toilets, and flush type toilets. The flush toilet and the like have been known so far.

[0003] As a siphon jet type flush toilet, for example, one disclosed in Japanese Utility Model Publication No. 63-22212 is known. This toilet can be shown, for example, as a cross-sectional view in FIG. In the figure, 1 is a bowl of a toilet bowl, 2 is a rim provided along the entire upper edge of the bowl 1, 3 is a water passage provided in the rim 2, 4 is a water supply port from a low tank, Reference numeral 5 denotes a drain port of the bowl 1, 6 denotes a water injection hole provided in the rim portion 2, 7 denotes a jet hole, 8 denotes a water conduit, and 9 denotes an inverted U-shaped drain pipe that exhibits a siphon action.

[0004] Further, in a flush-type flush toilet which can be exemplified in the cross-sectional view of FIG. 10, a drain pipe 9 having substantially the same configuration and structure as the siphon-jet type flush toilet described above.
However, in the case of the washing-down type, the washing water is spouted only from the spray hole 6 provided in the rim 2. However, for example, in the case of the conventional siphon-jet type flush toilet shown in FIG. 9, while having high washing performance, a large amount of water must be jetted from the jet hole 7 due to the use of the siphon action. There is a basic problem. In addition, after discharge of dirt and the like, air enters into the drain port 5 to generate an unpleasant noise, and furthermore, in a case where the siphon action ends halfway, the drain port 5 enters the bowl 1. There was also a problem that water returned and the filth could not be completely washed away.

[0005] In the case of the conventional flush-type flush toilet illustrated in FIG. 10, since the filth and the like are discharged only by the force of the water, the rinsing noise is loud and the filth that floats on the water. Was very difficult to discharge. In order to solve such a drawback, a flush toilet as shown in a sectional view of FIG. 11 has been proposed by the present inventors (Japanese Patent Application No. 5-94669).
issue).

In this flush toilet, a drain pipe section 11 having a terminal opening 10 is provided horizontally from the drain port 5 provided at the bottom of the bowl 1 to the rear of the toilet bowl.
A drain pipe section 13 having a bottom portion 2 is connected thereto, and a flapper valve 14 which can be freely opened and closed is disposed at an end opening 10 of the drain pipe section 11. In such a flush toilet, at the time of washing and draining, by opening the flapper valve 14, the washing water on the bowl 1 surface together with the dirt and the like in the bowl 1 is discharged to the outside of the toilet through the drain pipe section 11 and the discharge pipe section 13 at once. Can be discharged. In this way, it is possible to reliably discharge dirt and the like without causing a siphon action, thereby stabilizing the cleaning performance, and at the same time, providing an effect of suppressing unpleasant noise during cleaning and drainage.

In the flush toilet illustrated in FIG. 11, an overflow drain pipe 16 for connecting the drain pipe section 11 and the discharge pipe section 12 is provided. The overflow drain pipe 16 extends upward from the drain pipe section 11, passes directly above the drain pipe section 13, and is connected downward to the discharge pipe section 13. By providing the overflow drain pipe 16 in this manner, the water level of the water pool in the bowl 1 can be set to a sufficient height, and for example, the water level can be changed between large use and small use. Waste can be discharged. In the event that the wash water is excessively supplied into the bowl 1, excess wash water can be discharged to the outside of the toilet through the overflow drain pipe 16.

[0008]

However, even in the flush toilet provided with the flapper valve 14 having such excellent operational effects, in this flush toilet, the discharge pipe portion 13 is formed as an integral body. Therefore, when water leakage or the like occurs in the valve 14 and maintenance is required, there is a problem that the entire discharge pipe 13 must be removed from the drain pipe 11. In addition, as described above, since the overflow drain pipe 16 is bent above the discharge pipe section 13, a sufficient space cannot be taken for removing the discharge pipe section 13. Depending on the size of the overflow drain pipe 1
6 had to be removed, and removal of the discharge pipe 13 was not easy.

As described above, the flush toilet illustrated in FIG. 11 has a problem that it is difficult to attach and remove the valve 14 during maintenance of the valve 14 provided in the valve device. The present invention has been made in view of the above circumstances, and solves the drawbacks of the conventional flush toilet, and allows easy and easy removal and maintenance of a valve provided in a valve device when a failure or the like occurs. The aim is to provide an improved flush toilet that can.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a drain pipe connected from the drain port at the bottom of the bowl to the back of the toilet bowl, and a valve for opening and closing the drain pipe at the terminal opening. Along with disposing a valve device, a discharge pipe having a discharge port at a terminal end is connected to the drain pipe to communicate therewith,
In a flush toilet that closes the end opening of the drain pipe with a valve to form a water reservoir in the bowl and opens the valve to perform bowl washing and drainage, the drain pipe is provided for the upper case and the lower case. Divided into two, the upper case is detachably connected to the lower case,
A rotating shaft for rotatably supporting the valve of the valve device is supported by the upper case, and the flush toilet is provided with an overflow drain pipe for bypass communication between the drain pipe section and the discharge pipe section. Goes upward from the drain pipe,
Bend so that it does not pass over the upper case of the discharge pipe,
Next, there is provided a flush toilet characterized by being connected downward to a lower case of a discharge pipe portion.

[0011]

In the flush toilet of the present invention, the discharge pipe is divided into an upper case and a lower case, the upper case is detachably connected to the lower case, and the valve of the valve device is rotated. A freely rotating shaft is supported by the upper case. Also, an overflow drain pipe is provided to connect and bypass the drain pipe section and the discharge pipe section, and the overflow drain pipe is directed upward from the drain pipe section so as not to pass above the upper case of the discharge pipe section. It is bent and then connected downward to the lower case of the discharge pipe section.

With such a configuration, when water leakage or the like occurs in the valve provided in the valve device, only the upper case need be removed without removing the lower case. Upon removal of the upper case, the valve is removed with its upper case. When mounting the valve, the upper case may be fixed to the lower case after inserting the valve into the lower case. In mounting and removing such a valve, the overflow drain does not pass above the upper case,
The space above the upper case is larger than in conventional flush toilets, and the overflow drain does not hinder the mounting and removal of the upper case.

For this reason, when performing valve maintenance, etc.,
Mounting and removal can be performed simply and easily.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a flush toilet according to the present invention. 1 and 2 are a longitudinal sectional view and a transverse sectional view, respectively, showing an embodiment of a flush toilet of the present invention.

For example, in the examples shown in FIGS. 1 and 2, a rim portion 2 is provided along the upper edge of the bowl 1 along the entire periphery thereof. 3 are formed. The bottom of the bowl 1 is provided with a drain port 5 bent to the rear side of the toilet, and a horizontal drain pipe section 11 is connected to the drain port 5 behind the toilet. An upright discharge pipe 13 having a discharge port 12 at the bottom end is connected to the rear of the drain pipe 11. Discharge pipe part 13
Is provided with a horizontal connection portion 21 for connecting to the drain pipe portion 11 on the side thereof, and the horizontal connection portion 21 and the discharge pipe portion 13 are provided.
End opening 10 of drainage pipe 11 between the upright portion of
Is also formed. The connection between the drain pipe section 11 and the horizontal connection section 21 of the discharge pipe section 13 can be made by providing flanges or the like at opposite ends and through appropriate binding means such as bolts and nuts.

The discharge pipe section 13 has an upper case 101 and a lower case 10 with the upper surface of the horizontal connection section 21 as a boundary.
It is divided into two. These upper cases 101
The lower case 102 is formed with a flange portion at the connection facing surface portion, and through the flange portion, an appropriate binding means such as a bolt and a nut is used to form the upper case 101.
Can be fixed on the lower case 102 so as to be attachable and detachable.

On the other hand, as shown in FIG. 3, the lower case 102 can be fixed inside the toilet by bolts 23 and nuts 24. In the example of FIG. 1, the terminal opening 10 as the drain pipe 11
An openable and closable flapper valve 14 is provided in the vertical direction. The flapper valve 14 opens and closes inside the discharge pipe section 13, and a pressing plate 38 is connected to the back of the flapper valve 14. The upper end of the pressing plate 38 is rotatably supported by the rotating shaft 15, and as a result, the flapper valve 14
Is obtained. And the rotating shaft 15
Is supported by the upper case 101 of the discharge pipe section 13, and a driving source 103 of the flapper valve 14 as illustrated in FIGS. 4 and 5 is connected to the rotating shaft 15.

For example, as shown in FIGS. 4 and 5, a fixed portion 25 provided on the upper case 101 of the discharge pipe portion 13 is provided with a motor 26 as a power source.
The motor 26 is provided with a cam 28 which is connected to the rotation shaft and is rotatable about the rotation shaft 27 as the center of rotation. On one side of the cam 28, one end of a link 29 is rotatably connected. An elongated hole 30 opened in the longitudinal direction is formed at the other end of the link 29.

Further, there is provided a lever 34 having a substantially Z-shape, in which two horizontal portions 31 and 32 are arranged in the left and right direction and connected by a vertical portion 33. In the lever 34, the length of the lower horizontal portion 32 is shorter than that of the upper horizontal portion 31, and a substantially horizontal slot 35 is formed in the lower horizontal portion 32 in the longitudinal direction. The rotating shaft 27 of the cam 28 is inserted into the elongated hole 35.

An inclined surface 36 which is inclined toward the lower end thereof is formed on the side surface of the lower end of the horizontal portion 32 below the lever 34. Further, the lever 34 is connected to the above-mentioned link 29 via the elongated hole 30 at the tip of the upper horizontal portion 31. The torsion coil spring 20 is connected between the connection portion of the lever 34 with the link 29, that is, between the distal end portion of the upper horizontal portion 31 and the valve device fixing portion 25 in the vicinity thereof. The torsion coil spring 20 is arranged with its annular helical portion 37 facing the cam 28.

Both ends of the torsion coil spring 20 are rotatably connected to the lever 34 and the fixed portion 25.
As is clear from FIG. 4, the lever 34, the torsion coil spring 20 and the link 29 are connected at the same place. As illustrated in FIG. 5, the rotation shaft 15
The distal end protrudes toward the lever 34 from the side of the upper case 101 and is bent substantially in an L-shape.
Horizontal portion 3 provided on the lever 34 at the front end portion 40
2 can be in contact with the side surface.

The rotary shaft 15 is provided with another torsion coil spring 41 between a portion supporting the pressing plate 38 and the bent portion 39. This torsion coil spring 41
Is for assisting the movement of the flapper valve 14 in the closing direction, and may be omitted in some cases. In the state illustrated in FIGS. 4 and 5, the flapper valve 14 closes the terminal opening 10 as the drain pipe. In this state, a puddle is formed in the bowl 1 of the flush toilet illustrated in FIG. Even by the formation of the puddle, the flapper valve 14 does not open at all, and the opening 10 is firmly closed, so that water leakage does not occur.

To explain the principle, when the flapper valve 14 is in the closed state, the lower surface of the lower horizontal portion 32 of the lever 34 rides on the distal end 40 of the bent portion 39 of the rotating shaft 15, and the flapper valve 14 Prevents rotation in the opening direction. This rotation is prevented by the torsion coil spring 2 described above.
Obtained with zero elastic force. That is, the torsion coil spring 20 is urged in a direction to push down the lower horizontal portion 32 of the lever 34 downward, and its elastic force is
It acts on the flapper valve 14 via the rotary shaft 4 and the rotating shaft 15. The flapper valve 14 is pressed against the opening 10 by receiving the elastic force of the torsion coil spring 20.

When the washing water is discharged together with the dirt and the like in the bowl 1 illustrated in FIGS. 1 and 2, the motor 26 is operated to rotate the cam 28. FIG. 6 is a cross-sectional view showing the state at that time. For example, as shown in FIG. 6, with the rotation of the cam 28, the cam surface comes into contact with the tip portion 40 of the bent portion 39 of the rotating shaft 15, and then the tip portion 40
Push up.

In the same manner, the link 29 is
The link 29 is rotated with the lever 34
The lever 34 is moved so as to be pulled rearward at a connection portion with the upper horizontal portion 31 of FIG. Then, the lever 34
The distal end of the lower horizontal portion 32 is separated from the distal end 40 of the bent portion 39 of the rotating shaft 15 and is pulled backward.
The movement of the lever 34 is performed using the elongated hole 35 of the lower horizontal portion 32 and the rotating shaft 27 of the cam 28 as guides. The lever 34 slides within the length of the elongated hole 35 and moves in a substantially horizontal direction.

When the cam 28 further rotates, the rotation shaft 15 rotates along with the cam surface, and the flapper valve 14 rotates together with the pressing plate 38 supported by this.
The opening 10 is opened. When the flapper valve 14 is changed from the open state to the closed state illustrated in FIGS. 4 and 5 again, the motor 26 is rotated and the rotating shaft 15 is moved along the cam surface of the cam 28 as in the open state. Of the bent portion 39 is returned to the original position. At this time, the lever 34 moves in a substantially horizontal direction by using the long hole 35 of the lower horizontal portion 32 and the rotating shaft 27 of the cam 28 as a guide by the movement of the link 29 accompanying the rotation of the cam 28. And the lower horizontal part 3
The second inclined surface 36 comes into contact with the distal end portion 40 of the bent portion 39 of the rotating shaft 15, and the lower horizontal portion 32 rides thereon, and the elastic force of the torsion coil spring 20 acts on the flapper valve 14.

1 and 2, the drain pipe section 11 and the discharge pipe section 13 are connected by an overflow drain pipe 16. This overflow drain pipe 16
Is connected to the lower case 102 of the discharge pipe portion 13 after going upward from the drain pipe portion 11 and then bending to the back side, further going upward, then bending horizontally, and then going downward. ing. As is clear from FIG. 2, the overflow drain pipe 16 is connected to the discharge pipe section 1.
The drain pipe section 11 and the drain pipe section 13 communicate with each other so as not to pass above the upper case 101 of the third case.

As described above, by providing the overflow drain pipe 16 which is directed upward from the drain pipe section 11 and is connected to the discharge pipe section 13, the water level of the puddle formed in the bowl 1 can be sufficiently increased. can do. For example, the water level at the time of large use and at the time of small use is shown in FIG.
It can be changed as shown by the two-dot chain line in the figure,
Enables effective waste discharge. In the event that the wash water is excessively supplied into the bowl 1, excess wash water can be discharged to the outside of the toilet through the overflow drain pipe 16.

For example, as shown above, the discharge pipe portion 13 is divided into upper and lower cases 101 and 102, and a rotating shaft 15 for rotatably supporting the flapper valve 14 is supported on the upper case and overflow. By arranging the drain pipe 16 so as not to pass above the upper case 101, for example, when water leakage or the like occurs in the flapper valve 14 and maintenance is required, only the upper case 101 is removed from the lower case 102. The flapper valve 14 can be taken out of the lower case 102 by lifting it upward. Upper case 1
01, a sufficient space is secured because the overflow drain pipe 16 does not pass through.
The overflow drain pipe 16 does not hinder the removal of the pipe 4. For this reason, the flapper valve 14 can be taken out without removing the overflow drain pipe 16. When attaching the flapper valve 14 after maintenance, the flapper valve 14 is
And insert the upper case 101 into the lower case 1
02 may be fixed by appropriate binding means. Attachment and removal of the flapper valve 14 are simpler and easier than before, maintenance is very easy, and workability and efficiency are greatly improved. Such convenience of attaching and detaching the flapper valve 14 is effective not only at the time of maintenance but also throughout the attaching and detaching.

In the examples shown in FIGS. 1 and 2, the rotating shaft 15 is bent toward the rear of the toilet and the valve drive source 103 is disposed at the rear of the toilet. As shown in FIG. 7, it can be arranged at the center of the toilet. In the example of FIG. 7, the rotating shaft 15 is bent toward the front of the toilet, and the cam 28, the link 29, the lever 34, and the torsion coil spring 20 are arranged at a substantially central portion of the toilet.

In the example shown in FIG.
Are different from the examples of FIGS. 4, 5, and 6. That is, the lever 34 is formed of a horizontal plate-like body, and an inclined surface 36 that is inclined toward the upper end is formed on a side surface of the distal end of the lever 34 that contacts the distal end 40 of the bent portion 39 of the rotating shaft 15. When the flapper valve 14 is closed, the upper end of the lever 34 supports the distal end 40 of the bent portion 39 of the rotating shaft 15 from below, so that the elastic force of the torsion coil spring 20 acts on the flapper valve 14. I have.

For example, in the flush toilet of the present invention which can be shown above, as shown in FIG. 8, flush water for flushing the bowl 1 can be supplied directly from tap water. The water pipe for supplying the flush water can be connected to a solenoid valve 42 provided at the upper rear part of the toilet. This solenoid valve 42
, The washing water is supplied from the water pipe directly into the bowl 1 through the water spray hole 6 via the rim portion 2.

As shown in FIG. 8, a control device 43 for operating and controlling the solenoid valve 42 is provided above the solenoid valve 42, that is, in the vicinity of the upper rear surface of the flush toilet.
A box body 44 storing the. As described above, since the control device 43 is housed inside the box body 44, even if a water leak occurs in the flush toilet, for example, the control device 43 is not flooded, and the electric circuit unit provided therein is provided. And the like can be stably maintained. In addition, when only the electric component provided in the control device 43 fails, the control device 43 is arranged at the rear upper portion of the flush toilet, so that repair and replacement can be easily performed, and the convenience is excellent.

In such a flush toilet, since it is closed by the flapper valve 14 at the time of non-wash drainage, a water pool is formed by supplying water into the bowl 1. The puddle can prevent the odor from flowing backward. On the other hand, the flapper valve 14
Is released by the above-described operation of the valve device, and the dirt and the like in the bowl 1 are discharged to the outside from the discharge port 13 at the bottom of the discharge pipe 13 at a stretch together with the washing water on the surface of the bowl 1. Since the drain pipe section 11 connected to the drain port 5 of the bowl 1 is provided in a horizontal direction, the water in the bowl 1 is discharged by its own head pressure. For this reason, it is not necessary to cause a siphon action for discharging dirt and the like, and it is not necessary to jet flush water from the water spray hole 6 of the rim portion 2 vigorously. Dirt and the like can be discharged from the bowl 1 together with the washing water with a small amount of water, quietly and effectively in a short time. In addition, unlike a conventional siphon-type or siphon-jet type flush toilet, backflow of dirt, water, and the like is prevented, and uncomfortable noise caused by the formation of an air pocket is reduced.

Of course, the present invention is not limited by the above examples. It goes without saying that various forms are possible for details such as the shape of the flush toilet and the mounting method of the valve device.

[0036]

As described above in detail, according to the present invention, the valve provided in the valve device can be easily and easily taken out and maintenance can be performed in the event of a failure, and the valve can be easily removed and mounted. Can be. The workability and efficiency of the mounting and removing operations are improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a flush toilet according to the present invention.

FIG. 2 is a cross-sectional view of the example of FIG.

FIG. 3 is a plan view illustrating a drain pipe section and a discharge pipe section of FIG. 1;

FIG. 4 is a cross-sectional view showing an example of a valve device that can be used in the flush toilet of the present invention.

FIG. 5 is a plan view of the example of FIG. 5;

6 is a cross-sectional view illustrating a state when the valve device illustrated in FIG. 4 is opened.

FIG. 7 is a sectional view showing another example of the flush toilet of the present invention.

FIG. 8 is a sectional view illustrating a flush toilet of the present invention.

FIG. 9 is a sectional view of a conventional siphon-jet type flush toilet.

FIG. 10 is a sectional view of a conventional flush-type flush toilet.

FIG. 11 is a sectional view of a conventional flush toilet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bowl 2 Rim part 3 Water passage 5 Drain port 6 Water injection hole 10 Termination opening part 11 Drain pipe part 12 Drain port 13 Drain pipe part 14 Flapper valve 15 Rotation axis 16 Overflow drain pipe 20 Torsion coil spring 21 Horizontal connection part 22 Packing 23 Bolt 24 Nut 25 Fixed part 26 Motor 27 Rotating shaft 28 Cam 29 Link 30 Long hole 31, 32 Horizontal part 33 Vertical part 34 Lever 35 Long hole 36 Inclined surface 37 Annular spiral part 38 Pressing plate 39 Bend part 40 Tip part 41 Torsion coil spring 42 solenoid valve 43 controller 44 box 101 upper case 102 lower case 103 valve drive source

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E03D 11/10 E03D 5/012

Claims (2)

(57) [Claims] A drain pipe is connected from the drain port at the bottom of the bowl to the back of the toilet, and a valve device having a valve for opening and closing the drain pipe is disposed at the terminal opening, and a discharge pipe having a discharge port at the terminal part. The drain is connected to the drain pipe, and the end opening of the drain pipe is closed with a valve to form a puddle in the bowl, and the valve is opened to perform bowl washing and draining. In a toilet bowl, a discharge pipe part is divided into two parts, an upper case and a lower case, and the upper case is detachably connected to the lower case, and a rotation shaft for rotatably supporting a valve of the valve device is provided. An overflow drain pipe is provided on the upper case and communicates with the flush toilet to bypass the drain pipe section and the discharge pipe section. The overflow drain pipe faces upward from the drain pipe section and is located above the drain pipe section. Above the case A flush toilet characterized by being bent so as not to pass through and then being connected downward to a lower case of a discharge pipe portion. 2. The flush toilet according to claim 1, wherein a valve drive source of the valve device is fixed to an upper case of the discharge pipe portion.