JP2021080730A - Water closet - Google Patents

Abstract

To provide a water closet that can reduce a water amount required for one flush as compared with a conventional water closet in which stored water is poured into a stored water level along an inner wall of a water closet body.SOLUTION: A water closet 1 comprises: a toilet bowl body 2 that has a water storage part 21 that forms a stored water level 20 and receives stool, and a siphon discharge part 24 that operates a siphon by a water pressure of the water storage part 21 to suck up and discharge stool of the water storage part 21 together with water of the water storage part 21; a moving discharge part 3 that can discharge the water from above the water storage part 21 to the stored water level 20 and can move to a discharge position P1 above the water storage part 21 and a retreat position P2 that does not prevent a user from defecating to the stored water level 20; and a water supply device 4 for storing water that can increase a water pressure of the water storage part 21 to operate the siphon by supplying the stored water to the moving discharge part 3 located at the discharge position P1 and discharging the water to the stored water level 20.SELECTED DRAWING: Figure 1

Description

In the present invention, a water reservoir that forms a water reservoir surface to receive stool and a siphon discharge that operates a siphon by the water pressure of the water storage part to suck up and discharge the stool of the water storage part together with the water of the water storage part. With respect to the flush urinal with the part.

Flush toilets that use flush toilets are widespread. In a general water-washing stool, a water storage part that forms a water storage surface to receive stool and a siphon are operated by the water pressure of the water storage part to suck up the stool of the water storage part together with the water of the water storage part. It has a siphon discharge part for discharging water, and a water supply device capable of increasing the water pressure of the water storage part by storing water and pouring the stored water into the water collecting surface along the inner wall of the washing urinal body.

JP-A-2019-157517 JP-A-2018-444401

In a flush toilet, flushing is performed for each defecation of the user, and usually 4 to 8 liters of water is used for each flush. The amount of water required for one flush differs depending on the flush toilet, and if the amount of water required for one flush is large, the water charge and sewerage charge will increase. For this reason, flush toilets have been developed that can reduce the amount of water required for one flush to 4 liters or less.

In addition, it is required to be mounted on vehicles, trains, and ships that must transport sewage used for flushing, to be installed in dry areas with scarce water resources, disaster areas, etc., or to reduce the size and weight of the entire toilet system. In applications such as construction sites, it is strongly desired that the amount of water required for one washing can be further reduced to, for example, 2 liters or less.

The present invention provides a flush toilet that can reduce the amount of water required for one flush as compared with a conventional flush toilet in which the stored water is poured into the pool surface along the inner wall of the flush toilet body. It is an object.

The water-washing stool according to claim 1 has a water-reservoir that forms a water-retaining surface to receive stool, and a siphon is operated by the water pressure of the water-reservoir to suck up the stool of the water-reservoir together with the water of the water-reservoir. It is possible to discharge water from the sky above the water reservoir to the water storage surface, and the discharge position above the water storage part and the water storage surface by the user. By storing the water and supplying the stored water to the moving discharge part located at the discharge position and discharging it to the water storage surface. It is characterized by having a water supply device capable of operating the siphon by increasing the water pressure of the water reservoir.

The flush toilet according to claim 2 has a toilet seat that is superposed on the toilet body to form a seating surface for the user, and the moving discharge portion is provided between the toilet seat and the toilet body. It is characterized by that.

The flush toilet according to claim 3 is characterized in that the main body of the toilet bowl accommodates the moving discharge portion so as to be rotatable or reciprocating in a horizontal plane.

The flush toilet according to claim 4 is characterized in that the water supply device starts supplying water to the moving discharge unit in conjunction with the movement of the moving discharge unit to the discharge position.

According to the flush toilet of claim 1, the amount of water required for one flush can be reduced as compared with the conventional flush toilet in which the stored water is poured into the pool surface along the inner wall of the flush toilet body. Can be provided.

According to the flush toilet of claim 2, the flush toilet incorporating the moving discharge portion can be assembled compactly with a small number of parts.

According to the flush toilet of claim 3, the flush toilet incorporating the moving discharge portion can be assembled compactly with a small number of parts.

According to the flush toilet of claim 4, it is not necessary to perform the operation of starting the water supply by the water supply device independently of the operation of moving the moving discharge unit to the discharge position.

It is a perspective view which shows the whole appearance structure of the flush toilet of Embodiment 1 which concerns on the example of Embodiment of this invention. It is a side sectional view explaining the operation of the moving discharge part in the flush toilet of Embodiment 1. FIG. (A) is a retracted position, and (b) is a discharge position. It is a side sectional view explaining the drive mechanism of the moving discharge part in the flush toilet of Embodiment 1. FIG. It is a perspective view which shows the whole appearance structure of the flush toilet of Embodiment 2 which concerns on the example of Embodiment of this invention. It is a top view which shows the whole appearance structure of the flush toilet of Embodiment 3 which concerns on the example of embodiment of this invention. (A) is a discharge position, and (b) is a retract position. It is a top view explaining the operation of the drive mechanism of the moving discharge part in the flush toilet of Embodiment 3. (A) is a discharge position, and (b) is a retract position.

Hereinafter, embodiments of the flush toilet bowl of the present invention will be described in detail with reference to the attached drawings.

(Embodiment 1)
The configuration and operation of the flush toilet 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. In FIG. 1, in order to explain the accommodation state of the moving discharge unit 3 in the toilet bowl main body 2, a part of the outer wall of the water supply device 4 is removed and shown, and the removed part is shown by a chain line. In FIG. 2, some of the constituent members of the flush toilet 1 are omitted in order to avoid complication of the drawings and facilitate understanding of the structure. FIG. 3 is an enlarged view of the drive mechanism 30 housed in the side sectional view of FIG.

As shown in FIG. 1, the flush toilet 1 is a so-called siphon toilet with a tank, in which the water stored in the tank 41 is manually flushed to perform flushing. The flush toilet 1 has a toilet body 2, a mobile discharge unit 3, and a water supply device 4.

The stool main body 2 has a water collecting part 21 that forms a water collecting surface 20 to receive stool, and a siphon is operated by the water pressure of the water collecting part 21 to suck up the stool of the water collecting part 21 together with the water of the water collecting part 21. It has a siphon discharge unit 24 for discharging.

The toilet bowl main body 2 is provided with a water collecting portion 21 near the center of the bowl portion 22 and a rim portion 23 on the upper edge of the bowl portion 22. The siphon discharge portion 24 is connected rearward from the opening on the bottom side of the water reservoir portion 21, and an S-shaped pipeline in which a U-shape and an inverted U-shape are connected is formed.

The toilet bowl body 2 discharges the old water of the water reservoir 21 at the time of flushing and replaces it with the new water introduced from the tank 41 to replace the water of the water reservoir 21 so that the old turbid water does not continue to accumulate. I have to.

The toilet bowl main body 2 constantly collects water in the U-shaped pipeline formed by the water storage unit 21 and the siphon discharge unit 24, shuts off the toilet room side and the sewerage side, and the offensive odor and insects on the sewerage side are discharged to the toilet. I try not to invade the room.

The water depth of the water reservoir 21 is called the sealing depth, and is defined by the standard according to the application. The water depth of the water reservoir 21 is regulated so that the cutoff between the toilet room side and the sewerage side is not broken even if the maximum pressure difference assumed between the toilet room side and the sewerage side occurs.

The mobile discharge unit 3 can discharge water from the sky above the water storage unit 21 to the water storage surface 20, and the discharge position P1 above the water storage unit 21 and the evacuation position that does not prevent the user from defecation to the water storage surface 20. The discharge port 31 can be moved to and from P2 for positioning.

The moving discharge unit 3 is slidably attached to the recess 25 formed on the upper surface of the toilet bowl main body 2 by using a slide bearing (not shown), and moves in the front-rear direction on a path in a horizontal plane regulated by the slide bearing. It can move back and forth. In order to avoid unnecessary contact between the user and the mobile discharge unit 3, a cover (not shown) may be attached to the upper surface of the toilet bowl body 2 to cover the recess 25 and the mobile discharge unit 3. It is preferable that the cover can be easily removed during cleaning and maintenance.

The toilet seat 5 is attached to the upper surface of the toilet bowl body 2 so as to be openable and closable by a hinge 52. The toilet seat 5 is superposed on the toilet body 2 to form a seating surface 51 for the user. The moving discharge unit 3 is provided between the toilet seat 5 and the toilet bowl main body 2, and moves under the toilet seat 5.

As shown in FIG. 2A, the user uses the flush toilet 1 for defecation in a state where the lever 32 is tilted backward to move the moving discharge unit 3 to the evacuation position P2. As shown in FIG. 2B, after defecation, the user rotates the lever 32 by 90 degrees to move the moving discharge unit 3 to the discharge position P1 to flush the flush toilet 1.

As shown in FIG. 3, the drive mechanism 30 converts the rotation of the lever 32 into a linear motion of the moving discharge unit 3 by the pinion gear 36 and the rack 37. The lever 32 rotates about the rotation shaft 32a integrally with the drive gear 34. The rack 37 is fixed to the moving discharge unit 3. The rotation of the drive gear 34 is transmitted from the intermediate gear 35 to the pinion gear 36 and then transmitted from the pinion gear 36 to the rack 37 to cause the moving discharge unit 3 to move linearly.

As shown in FIG. 1, the water supply device 4 stores water in the tank 41, supplies the water stored in the tank 41 to the mobile discharge unit 3 located at the discharge position P1, and supplies the water from the discharge port 31 to the water storage surface 20. It is possible to increase the water pressure of the water reservoir 21 by discharging the water to the water reservoir 21.

The water supply device 4 stores water in a tank 41 supported at a predetermined height position from the water storage surface 20 of the toilet bowl main body 2. The tank 41 is connected to the moving discharge unit 3 from the bottom of the tank 41 via a solenoid valve 42 and a water pipe 43. The water pipe 43 is made of a flexible material and is curved according to the slide of the moving discharge unit 3 in the front-rear direction so as not to hinder the movement of the moving discharge unit 3.

As shown in FIGS. 2A and 2B, the water supply device 4 starts supplying water to the moving discharge unit 3 in conjunction with the movement and positioning of the movable discharge unit 3 to the discharge position P1.

As shown in FIG. 3, the cam 33 has a recess 33a on the peripheral surface, and rotates around the rotation shaft 32a integrally with the lever 32. The switch 44 operates in the recess 33a as the cam 33 rotates to turn on the ON / OFF circuit 45 and start supplying water through the solenoid valve 42. The ON / OFF circuit 45 directly connects the battery 46 to the solenoid valve 42 through the contact of the switch 44.

Here, the ON / OFF circuit 45 has described a simple electric circuit using the switch 44, but it is more complicated to change the ON / OFF timing and the ON duration of the solenoid valve 42 by using a microcomputer. Various control circuit configurations and programs may be adopted. A sensor for detecting the presence or absence of stool in the water reservoir 21 is provided, and a control circuit is provided in which the siphon discharge unit 24 is discharged and the water supply through the solenoid valve 42 is stopped when the stool is exhausted from the water storage unit 21. May be good.

As shown in FIG. 2B, when the user rotates the lever 32 by 90 degrees after defecation, the moving discharge unit 3 is driven by the drive mechanism 30 to move from the evacuation position P2 to the discharge position P1.

At the same time, the recess 33a of the cam 33 turns on the switch 44, and the water supply to the moving discharge unit 3 at the discharge position P1 is started through the solenoid valve 42. The water stored in the tank 41 flows into the water pipe 43 through the solenoid valve 42, and is supplied to the moving discharge unit 3 through the water pipe 43. The water supplied to the mobile discharge unit 3 is directly discharged to the pool surface 20 through the discharge port 31 provided on the lower surface of the mobile discharge unit 3. As a result, the water level of the water reservoir 21 rises, the water pressure of the water storage part 21 rises, the inverted U-shaped pipeline of the siphon discharge part 24 is blocked with water, and the siphon phenomenon is activated. Then, while the siphon phenomenon continues, the stool and water of the water storage unit 21 are sucked up by the siphon discharge unit 24, and the water level of the water storage unit 21 drops sharply.

However, when the water surface of the water reservoir 21 drops to the entrance of the siphon discharge unit 24, air is sucked into the siphon discharge unit 24 from this inlet, the siphon phenomenon is broken, and the stool and water siphon phenomenon of the water storage unit 21 are broken. Discharge is completed.

The user waits for the end of the discharge due to the siphon phenomenon, tilts the lever 32 to the rear side, and moves the moving discharge unit 3 from the discharge position P1 to the evacuation position P2. Then, as the lever 32 rotates, the switch 44 is disengaged from the recess 33a of the cam 33, the solenoid valve 42 is turned off, and the supply of water to the water reservoir 21 through the discharge port 31 of the mobile discharge unit 3 is stopped. Will be done. After that, the water level of the water reservoir 21 is restored to the initial state by the water remaining in the water reservoir 21 in the state where the siphon phenomenon is broken.

Then, in the flush toilet 1, as in the conventional flush toilet, the drop / rise of the water level in the tank 41 is detected by a float valve (not shown), and the water supply to the tank 41 is turned on / off to turn the water inside the tank 41. The structure that automatically keeps the water level constant is adopted. Therefore, after the water supply to the moving discharge unit 3 is stopped, the amount of water stored in the tank 41 is automatically restored to the initial state.

The user checks the water level in the tank 41, and if the water level is insufficient, the user himself opens the water supply valve or replenishes the tank 41 with water using a plastic tank to replenish the tank 41. A configuration may be adopted in which the water level inside is restored to the initial state.

According to the inventor's experiment, using the same bowl portion 22, water reservoir 21, rim 23, and siphon discharge portion 24, water is discharged from the rim portion 23 to the bowl portion 22 and poured into the water reservoir 21. Compared with the flush toilet, the time from the start of water supply to the toilet body 2 to the start of suction of stool and water through the siphon discharge unit 24 is shortened. Then, as a result of conducting an experiment with different amounts of water stored in the tank 41, it was confirmed that the stool and water of the water reservoir 21 can be almost certainly discharged with a water amount of about 1.5 liters. Further, it was confirmed that when the stool floating in the water reservoir 21 is struck by the discharged water and sinks, the stool is easily discharged from the water reservoir 21 to the siphon discharge path 24.

(Embodiment 2)
In the first embodiment, a configuration has been described in which the lever 32 provided on the side surface of the toilet bowl main body 2 is rotated by 90 degrees to slide the moving discharge unit 3 back and forth. On the other hand, in the flush toilet bowl 1B of the second embodiment, as shown in FIG. 4, the slide lever 32B provided on the side surface of the toilet bowl main body 2 is slid to slide the moving discharge portion 3B back and forth. The configuration is adopted.

Further, in the first embodiment, a configuration has been described in which the water supply device 4 starts supplying water to the moving discharge unit 3B in conjunction with the movement of the moving discharge unit 3B to the discharge position P1. On the other hand, in the flush toilet bowl 1B of the second embodiment, as shown in FIG. 4, after sliding the moving discharge unit 3B to the discharge position P1, the manual valve 42B is manually opened and closed to manually open and close the moving discharge unit 3B. We have adopted a configuration that starts supplying water to the toilet.

Since the other configurations are the same as those in the first embodiment, in the following description, the constituent members are designated by the same reference numerals as those in FIGS. 1 to 3, and a part of the duplicated description is omitted. ..

The movable discharge unit 3C is attached to the upper surface of the toilet bowl main body 2 by using a slide bearing (not shown), and can slide back and forth on a path in a horizontal plane regulated by the slide bearing to move back and forth.

The root of the slide lever 32B is fixed to the side surface of the moving discharge portion 3C, and the tip of the slide lever 32B penetrates the slide groove 38 and protrudes from the side surface of the toilet bowl body 2. A handle 39 is attached to the tip of the slide lever 32B.

The user can move the moving discharge unit 3C to the discharge position P1 and the retracted position P2 by holding the handle 39 of the slide lever 32B and sliding it in the front-rear direction.

The water supply device 4C connects the water pipe 43B to the bottom surface of the tank 41 via a manual valve 42B. The manual valve 42B is guided by lifting a valve body (not shown) provided so as to cover the opening on the bottom surface of the tank 41 from below with a push button 45B and forming a gap between the bottom surface of the tank 41 and the valve body. Water flows through the water pipe 43B.

In the manual valve 42B, while the push button 45B is being pressed, a valve body (not shown) is lifted to allow water to flow into the water pipe 43B. Then, when the push button 45B is released, the opening is closed by a valve body (not shown), and the supply of water to the water pipe 43B is stopped.

The user holds the handle 39 of the slide lever 32B to move the moving discharge unit 3C to the discharge position P1, and then presses the push button 45B to discharge water from the moving discharge unit 3C at the discharge position P1 to the water storage unit 21. ..

The user keeps pressing the push button 45B until the stool and water of the water storage unit 21 are discharged through the siphon discharge unit 24 and the water level of the water storage unit 21 begins to drop, and then releases the push button 45B.

As a result, the discharge of water from the mobile discharge unit 3C to the water storage unit 21 is stopped. When the water level of the water reservoir 21 drops rapidly and the siphon phenomenon is broken, the water level of the water reservoir 21 is restored to the initial state by the water remaining in the water reservoir 21.

In the second embodiment, since the discharge state of the stool of the water storage unit 21 through the siphon discharge unit 24 is confirmed and then the water discharge by the mobile discharge unit 3C is stopped, the water storage unit 21 is discharged after the stool is discharged. You don't have to supply wasted water to the water. In addition, it is less likely that the water discharge from the moving discharge unit 3C will be stopped while the floating stool remains.

(Embodiment 3)
In the first embodiment, the configuration in which the moving discharge unit 3 is slid in the front-rear direction and positioned at the discharge position P1 and the retracted position P2 has been described. On the other hand, in the flush toilet 1C of the third embodiment, as shown in FIGS. 5 and 6, the moving discharge unit 3C is rotated around the rotation shaft 26 with respect to the toilet body 2. , A configuration is adopted in which the moving discharge unit 3 is moved to the discharge position P1 and the retract position P2.

Since the other configurations are the same as those in the first embodiment, in the following description, the constituent members are designated by the same reference numerals as those in FIGS. 1 to 3, and a part of the duplicated description is omitted. ..

The mobile discharge unit 3C is housed in a recess 25C formed on the upper surface of the toilet bowl main body 2, and can rotate about a rotation shaft 26 provided in the recess 25C. The moving discharge unit 3C can be positioned at the discharge position P1 by abutting the inner wall surface 25i of the recess 25C as it rotates. The moving discharge unit 3C can be positioned at the retracted position P2 by abutting the elastic body 25j provided on the inner wall surface of the recess 25C as it rotates. In order to avoid unnecessary contact between the user and the mobile discharge unit 3, a cover (not shown) may be attached to the upper surface of the toilet bowl body 2 to cover the recess 25C and the mobile discharge unit 3C. It is preferable that the cover can be easily removed during cleaning and maintenance.

The moving discharge unit 3C rotates integrally with the passive gear 36C around the rotating shaft 26. The intermediate gear 35C is a gear member in which the bevel gear on the end surface and the spur gear on the side surface rotate integrally. The lever 32C rotates integrally with the drive bevel gear 34C via the rotation shaft 32a.

The rotation of the drive bevel gear 34C is transmitted to the passive gear 36C via the intermediate gear 35C to drive the moving discharge unit 3C, and the moving discharge unit 3C is moved to the discharge position P1 and the retract position P2 around the rotating shaft 26. Rotate to.

As described above, the water-washing stools 1, 1B, and 1C can discharge water from the sky above the water reservoir 21 to the water storage surface 20, and the discharge position P1 above the water storage unit 21 and the storage by the user. A mobile discharge unit 3 that can move to a retracted position P2 that does not interfere with defecation to the water surface 20, and a moving discharge unit 3 that stores water and supplies the stored water to the mobile discharge unit 3 located at the discharge position P1 and discharges it to the water storage surface 20. It has a water supply device 4 capable of increasing the water pressure of the water reservoir 21 to operate the siphon. Therefore, the amount of water required for one flush can be reduced as compared with the conventional flush toilet in which the stored water is poured into the pool surface along the inner wall of the flush toilet body.

The flush toilets 1, 1B and 1C have a toilet seat 5 that is superposed on the toilet body 2 to form a seating surface 51 for the user, and a moving discharge unit 3 is provided between the toilet seat 5 and the toilet body 2. Has been done. Therefore, the flush toilets 1, 1B and 1C incorporating the mobile discharge units 3, 3B and 3C can be assembled compactly with a small number of parts.

In the flush toilets 1, 1B and 1C, the toilet body 2 can rotate or reciprocate the moving discharge portions 3, 3B and 3C in a horizontal plane. Therefore, the flush toilets 1, 1B and 1C incorporating the mobile discharge units 3, 3B and 3C can be assembled compactly with a small number of parts.

In the flush toilets 1 and 1C, the water supply device 4 starts supplying water to the moving discharge units 3 and 3C in conjunction with the movement of the moving discharge units 3 and 3C to the discharge position P1. Therefore, it is not necessary to perform the operation of starting the water supply by the water supply device 4 independently of the operation of moving the moving discharge units 3 and 3C to the discharge position P1.

Since the present invention is configured as described above, the amount of water required for one flush can be reduced as compared with the conventional flush toilet, so that the monthly water charge and sewerage charge can be reduced. In addition, for applications such as vehicles, aircraft, trains, and ships, the amount of sewage used for washing can be reduced, so the toilet system can be made smaller and lighter, and the fuel efficiency of vehicles, aircraft, trains, ships, etc. can be improved. Is expected. Furthermore, it can be suitably used in places where water resources are scarce, such as arid areas, desert areas, and disaster areas.

1 Washing toilet 2 Toilet bowl body 3 Moving discharge part 4 Water supply device 5 Toilet seat 20 Water storage surface 21 Water storage part 22 Bowl part 23 Rim part 24 Siphon discharge part 25 Recessed part 26 Rotating shaft 30 Drive part 31 Discharge port 32 Lever 33 Cam 33a Recess 34 Drive gear 35 Intermediate gear 36 Pinion gear 37 Rack 38 Slide groove 41 Tank 42 Electromagnetic valve 43 Water guide pipe 44 Switch 45 Drive circuit 51 Seating surface 52 Hinge

Claims (4)

A water storage part that forms a water storage surface to receive stool, and a siphon discharge part that operates a siphon by the water pressure of the water storage part to suck up and discharge the stool of the water storage part together with the water of the water storage part. Toilet bowl body and
Mobile discharge that can discharge water from the sky above the water reservoir to the water storage surface and can move to the discharge position above the water storage part and the evacuation position that does not prevent the user from defecation to the water storage surface. Department and
By storing water and supplying the stored water to the moving discharge unit located at the discharge position and discharging the water to the water storage surface, it is possible to increase the water pressure of the water storage part and operate the siphon. It is characterized by having a water supply device.
Flush toilet. It has a toilet seat that is stacked on the toilet body to form a seating surface for the user.
The moving discharge unit is provided between the toilet seat and the toilet body.
The flush toilet according to claim 1. The toilet bowl body is characterized in that the moving discharge portion is accommodated so as to be rotatable or reciprocating in a horizontal plane.
The flush toilet according to claim 1. The water supply device is characterized in that water is started to be supplied to the moving discharge unit in conjunction with the movement of the moving discharge unit to the discharge position.
The flush toilet according to claim 1.

Images