JP2907670B2 - 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 reduce undesired noise at the time of washing and draining, and can also reduce the return of dirt and washing water and stabilize washing performance, while saving water for washing. It is about.

[0002]

2. Description of the Related Art Conventionally, various types of flush toilets having various structures 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 flush toilets have been used. A 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 bowl 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 portion provided along the entire upper edge of the bowl 1, 3 is a water passage provided in the rim portion 2, 4 is a water supply port from a low tank, 5 is A drain port 6 of the bowl 1, a spray hole 6 provided in the rim portion 2, a jet hole 7, a water conduit 8, and an inverted U-shaped drain pipe 9 ′ that acts as a siphon. The drain pipe 9 'is formed of a hard material such as ceramics integrally with the flush toilet.

In such a siphon-jet flush toilet, the bowl 1 surface is washed by the washing water flowing down from the spray hole 6 of the rim portion 2 at the time of washing. Also, bowl 1
The washing water flowing down from the headrace channel 8 is jetted from the jet hole 7 to the drain port 5 provided at the lowest position of the above, thereby forcibly causing the washing water that has washed the bowl 1 surface to drain. This drainage flow creates a water-filled state inside the drainage line 9 ′, thereby causing a siphon action and forcibly discharging dirt in the bowl 1 together with the washing water. That is, in the siphon jet type flush toilet, a suction pressure is generated in the filled portion by flowing a part of the water at a stretch after the drainage line 9 'is full, and this suction force causes the water in the filled portion to be chained. The waste and the washing water in the bowl 1 are discharged to the inside.
In addition, when the water is not washed, a water puddle is formed in the bowl 1 with the water level at the bent portion of the inverted U-shaped drain pipe 9 'as the upper limit water level, and this water puddle prevents the backflow of offensive odor. This is the initial flow of action.

[0005] In this siphon-jet type flush toilet, an air pocket is formed in the inside of the drainage pipe which hangs downward through the bent portion of the inverted U-shaped drainage pipe 9 '. An important requirement is how quickly the pool is filled with water. Therefore, conventionally, it has been proposed that the drainage pipe bends into a complicated shape, or that the inner diameter of the drainage pipe is partially reduced, thereby increasing the flow path resistance at that portion and making it easier to fill the area. Has been.

[0006] Further, in the flush type flush toilet which can be exemplified in the cross-sectional view of FIG. 9 and the plan view of FIG. 10, a drain pipe having substantially the same configuration and structure as the siphon jet flush toilet is provided. However, in the case of this flush toilet, the washing water is jetted only from the spray hole 6 provided in the rim portion 2, and the bowl 1 is washed with the wash water from the spray hole 6. At the same time, the waste is discharged from the bowl 1 in the direction of the drainage line 9 'at the same moment.

[0007]

However, in the case of a siphon-jet type flush toilet as shown in FIG. 8, for example, although it has a high washing performance, it uses a siphon action to provide a larger amount of water than the jet hole 7. There is a basic problem that water must be injected. Also,
The siphon action is that the water in the bowl 1 is gradually drained 9
, The water level in the puddle drops, and air enters the drain pipe 9 ′ from the drain port 5, and the water filling state is broken and completed. Therefore, when the air enters from the drain port 5 at the end, it is called “bumpy”. There is also a problem that unpleasant sounds are generated. Further, once the water drawn into the siphon action ends in the middle of the siphon action, the water may return from the drain port 5 to the inside of the bowl 1 without going over the bent portion above the drain pipe 9 ', and the waste may be contaminated. And washing water may not completely flow.

In order to eliminate such disadvantages, the inventors of the present invention have already proposed a flush toilet as illustrated in FIGS. 11 (a) and 11 (b) (Japanese Patent Laid-Open No. 4-28522).
No. 7). In this flush toilet, the drainage pipe 9 is formed of a flexible material, and the drainage pipe 9 is deformed and movable by driving devices 12 and 13. However, in the case of this flush toilet, since the drainage line 9 is made of a flexible material, the strength of the drainage line 9 deteriorates due to the repeated deformation, and the deformation control of the drainage line 9 is relatively difficult. Defects such as lack of shape stability of the pipe are inevitable.

On the other hand, in the case of the flush toilet shown in FIGS. 9 and 10, since the waste is discharged only by the force of the water, the cleaning sound is loud and the waste which floats on the water is extremely difficult. There is a problem that it is difficult to discharge. The present invention has been made in view of the above circumstances, and eliminates the drawbacks of conventional flush toilets, saves washing water, suppresses unpleasant noise during washing and drainage, and furthermore reduces waste It is an object of the present invention to provide a highly reliable flush toilet that can eliminate the return of flush water and stabilize flush performance.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a drain pipe extending from a drain port at the bottom of a bowl of a flush toilet and a horizontal pipe portion and an end portion disposed at a substantially right angle. A vertical pipe section having an opening, and connected to an L-shaped movable drain pipe rotatable around the center of the horizontal pipe section, the L-shaped movable drain pipe was internally provided, and a discharge port was provided. A flush toilet comprising a case body and driving means for an L-shaped movable drainage pipe, wherein the driving means turns the L-shaped movable drainage pipe over during cleaning and drainage and L-shaped during non-washing drainage. A flush toilet characterized in that a movable drain pipe is set upright with an end opening of a vertical pipe part facing upward to form a water pool in a bowl.

[0011]

[Operation] In the flush toilet of the present invention, the horizontal pipe section and the vertical pipe section are connected to the drain pipe extending from the drain port at the bottom of the bowl at a substantially right angle, and the center of the horizontal pipe section is used as an axis. A rotatable L-shaped movable drain pipe, driving means for rotating the L-shaped movable drain pipe, and a case body provided with the L-shaped movable drain pipe and having an outlet. At the time of washing and draining, the L-shaped movable drain pipe can be turned over to a horizontal position or higher, so that the trapping effect of the vertical piping part is eliminated, and the water in the bowl can be discharged by its own head pressure. For this reason, it is not necessary to cause a siphon action for drainage, and it is not necessary to jet flushing water from a rim portion or the like. Discharge of dirt and the like in the bowl and cleaning of the bowl surface can be performed quietly and in a short time with an extremely small amount of water. Also, at the time of non-washing drainage, the L-shaped movable drainage pipe can be erected with its vertical piping opening upward, and a water pool can be formed in the bowl up to the vertical piping opening. it can. The backflow of the odor is prevented. Further, even if more water is supplied into the bowl, the water overflows from the vertical pipe opening, passes through the case body, and is discharged from the discharge port to the outside of the flush toilet, so that the water does not overflow from the bowl. The length of the vertical pipe portion of the L-shaped drainage pipe can be freely set, and the water level of the water pool formed in the bowl can be appropriately changed. Further, the L-shaped drainage pipe has a constant and stable shape, and the shape stability is ensured along with the durability.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a flush toilet according to the present invention. FIG. 1 is a sectional view showing an embodiment of a flush toilet according to the present invention. In the example of FIG. 1, a rim portion 2 is provided along the entire upper edge of the bowl 1, and a washing water passage 3 is formed inside the rim portion 2. Further, the rim portion 2 is formed with a water injection hole 6 facing the inner surface direction of the bowl 1 and communicating with the water passage 3. Further, a drain pipe 14 having a predetermined length extends from the drain port 5 provided at the bottom of the bowl 1 horizontally rearward. A drain pipe block 15 described below is connected to the rear of the drain pipe 14 via a packing 16. The outer diameter of the drain pipe 14 is, for example, as shown in FIG.
Can be tapered and can be strongly sealed as the drain block 15 is inserted. The drain pipe block 15 can be firmly fixed in the flush toilet with bolts 17, nuts 18 and the like as illustrated in FIG.

The drain pipe block 15 includes a case body 19, L
It comprises a movable drainage pipe 20 and a drive unit 21. FIG. 4 shows this enlarged. For example, as illustrated in FIG. 4, in the L-shaped movable drain pipe 20, the horizontal pipe section 22 and the vertical pipe section 23 are connected at substantially right angles, and the outer connection section thereof, that is, the L-shaped movable drain pipe 20. The outer bend of the pipe 20 has a shaft 2 on the extension of the horizontal pipe 22.
4 are connected. The shaft 24 is disposed coaxially with the horizontal pipe portion 22 of the L-shaped movable drain pipe 20,
Penetrates. The L-shaped movable drainage pipe 20 is rotatable left and right about the center of the horizontal pipe part 22 and the shaft 24. Further, between the outer peripheral surface of the horizontal piping portion 22 and the inner peripheral surface of the case 19, the vicinity of the opening of the horizontal piping portion 22 and the connection portion (L-shaped) inside the horizontal piping portion 22 and the vertical piping portion 23. O-rings 25 seal at two locations near the bent portion inside the movable drain pipe 20) to prevent water from leaking to the outside. Bearings 26 are provided between the O-rings 25 to reduce frictional resistance when the L-shaped movable drainage pipe 20 rotates. Similarly, an O-ring 25 and a bearing 26 are provided at a portion where the shaft 24 passes through the case body 19. Such an L-shaped movable drain pipe 20 is housed inside the case body 19. At the bottom of the case body 19, as shown in FIG.
Is formed, and the waste water and overflow water from the L-shaped movable drain pipe 20 are discharged to the outside of the flush toilet through the discharge port 27.

The power for rotation of the L-shaped movable drain pipe 20 is introduced from a drive unit 21. FIG. 5 is a side view illustrating the configuration of the driving unit 21. Of course, the configuration of the driving unit 21 is not limited by the following example. For example, in the example of FIG. 5, the case body 19 illustrated in FIG.
A gear 28 is provided at the tip of a shaft 24 protruding from the shaft 28. A worm gear 29 meshing with the gear 28 is provided below the gear 28, and is connected to a motor 31 via another gear 30. Operate the motor 31 and set the worm gear 2
By rotating 9, the rotating operation of the L-shaped movable drain pipe 20 is performed.

At the time of non-washing / draining of the flush toilet, <
As illustrated in <a> and <b>, the L-shaped movable drain pipe 20 is erected upright with the opening at the tip of the vertical pipe section 23 upward, and the bowl is moved to a position where the opening of the vertical pipe section 23 is the upper limit. A puddle can be formed in 1. This pool prevents the backflow of offensive odors. In this case, even if more water is supplied into the bowl 1, the water overflows from the opening of the vertical pipe portion 23 of the L-shaped movable drain pipe 20 and overflows, passes through the inside of the case body 19, and is discharged from the discharge port 27. Released to the outside of the flush toilet. Water does not overflow from bowl 1.

On the other hand, at the time of washing and draining, the motor 31 is operated by an electric signal, and as shown in <a> and <b> in FIG. . Then, the washing water on the bowl 1 surface is discharged at a stretch together with the dirt and the like in the bowl 1. At this time, L
Since the M-shaped movable drain pipe 20 is tilted horizontally or more, a flow path is formed between the L-shaped movable drain pipe 20 and the discharge port 27 of the case body 19, so that filth and overflow water are formed. Can be discharged to the outside of the flush toilet. Further, the trapping effect in the vertical piping portion 23 is lost, and 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 flushing water from the rim portion 2 in FIG. With a very small amount, the washing water can be drained from the bowl 1 together with dirt and the like in a quiet and short time. The backflow of water after the end of the siphon action in the conventional siphon type or siphon jet type flush toilet is prevented, and the uncomfortable noise caused by the formation of an air pocket is reduced. In addition, the L-shaped movable drain pipe 20 has a constant and stable shape, and sufficient durability and shape stability are ensured. The material is not particularly limited, and an appropriate material having shape retaining properties can be selected and used.

After the washing and draining, the L-shaped movable drain pipe 20 is returned to the upright state in FIG. In the flush toilet of the present invention, the rotation of the worm gear 29 by the motor 31 can be finely controlled, and when water is stored in the bowl 1, for example, the L-shaped movable drain pipe 20 is used.
Instead of standing upright, the water level of the puddle formed in the bowl 1 may be changed to a desired one by inclining at an angle and changing the angle appropriately. Further, the length of the vertical pipe portion 23 of the L-shaped drain pipe 20 is relatively freely set, and the water level of the water pool formed in the bowl 1 is appropriately determined depending on the length of the vertical pipe portion 23. It is possible to change to

Of course, the present invention is not limited by the above examples. It goes without saying that various details are possible as long as the flush toilet is of a type that discharges dirt and the like using a drainage pipe.

[0019]

As described above in detail, the present invention provides a flush toilet which saves water for the flush water, has low noise, and has excellent cleanability without returning dirt and flush water.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view of a main part illustrating a connection part between a drain pipe and a drain pipe block of FIG. 1;

FIG. 3 is a plan view of a connecting portion in FIG. 2;

FIG. 4 is an enlarged sectional view showing the drain pipe block of FIG. 1;

FIG. 5 is a side view illustrating the configuration of a driving unit.

FIGS. 6A and 6B are a cross-sectional view and a vertical cross-sectional view, respectively, illustrating a state of the drain pipe block during non-wash drainage.

FIGS. 7A and 7B are a cross-sectional view and a vertical cross-sectional view illustrating a state of the drain pipe block at the time of washing and draining, respectively.

FIG. 8 is a cross-sectional view of a conventional siphon-jet type flush toilet.

FIG. 9 is a cross-sectional view of a conventional flush toilet.

FIG. 10 is a plan view of the flush toilet of FIG. 9;

FIG. 11 is a sectional view of a conventional siphon-jet type flush toilet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bowl 2 Rim part 3 Water passage 5 Drain port 6 Drain hole 14 Drain pipe 15 Drain pipe block 16 Packing 17 Bolt 18 Nut 19 Case body 20 L-shaped movable drain pipe 21 Drive part 22 Horizontal piping part 23 Vertical piping part 24 shaft 25 O-ring 26 Bearing 27 Outlet 28, 30 Gear 29 Worm gear 31 Motor

──────────────────────────────────────────────────続 き Continuation of the front page (72) Yoshihiro Nishizaki, Inventor 1048 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Works, Ltd. (56) References JP-A-1-278633 (JP, A) Jikken Sho 56-40938 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) E03D 11/02 E03D 11/13

Claims (1)

(57) [Claims] A drain pipe extending from a drain port at the bottom of a bowl of a flush toilet has a horizontal pipe section arranged at a substantially right angle and a vertical pipe section having an end opening, and the center of the horizontal pipe section is provided. L-shaped movable drain pipe rotatable around the shaft is connected, the L-shaped movable drain pipe is installed, a case body having a discharge port, and a driving means for the L-shaped movable drain pipe are provided. A flush toilet, wherein the driving means turns the L-shaped movable drain pipe over during washing and draining, and raises the L-shaped movable drain pipe upright with the end opening of the vertical piping part upward during non-washing and draining. A flush toilet characterized by forming a puddle in a bowl.