JPH03187429A - Closet water washing device - Google Patents

Abstract

PURPOSE:To make opening of a valve possible at the time of service interruption by pushing a disengaging pressing element of a shaft part of a lever against the rotating spring force of a spring member to relieve an engagement of the pin of the shaft part with the pin engaging part of a gear of a reduction gear for closing a valve. CONSTITUTION:When a driving device 7 is stopped by a service interruption on the way where an electrically driving device 7 is driven for rotation of a lever 6, the device 7 stops as the lever 6 draws a string-shaped element 5 to open a valve 4. When a disengaging pressing element 41 at the tip of a shaft part 6a is then pushed, the shaft part 6 is axially pushed against the spring force of a spring member 21 to disconnect a pin 24 from a pin engaging part of a gear 15 of a reduction gear 11. The lever 6 is then rotated by rotating force of the spring member 21 to its original position, and strikes against a stopper provided on a case body 9a for checking its further rotation. The string-shaped element 5 drawn by the lever 6 is then loosed to make a water flow or the dead weight of the valve 4 close it for closing a discharge port 3. Thus the simple formation can make engaging and disengaging of the reduction gear and automatic returning of the lever to its original position at the time of service interruption possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a toilet flushing device in which water stored in a cistern for flushing a toilet is electrically discharged by opening a valve.

[Prior Art 1] Conventionally, a toilet flushing device in which the operation of opening the valve of the discharge port for discharging the stored water of the cistern is performed electrically is known from Japanese Patent Publication No. 1-33 (No. 313). The valve disclosed in Japanese Patent Publication No. 1-33613 closes the valve by rotating a manual handle and rotating a lever during a power outage.

[Problems to be Solved by the Invention] However, in the above-mentioned device in which the valve is closed by rotating the manual handle in the event of a power outage, it is difficult to rotate the manual handle by holding the manual handle in the hand. Due to its large size, this large manual nozzle protrudes outside the cistern and is exposed, resulting in an unsightly appearance.

The present invention was invented in view of the problems of the conventional example described above, and its purpose is to press the tip of the lever in the event of a power outage in the middle of operating the valve in an electric type. With this simple operation, the engagement between the lever and the final stage tIJnt of the reduction gear can be released, and in addition, the manual knob that is held in the hand and rotated like in the past can be eliminated, and the appearance is improved. can improve 7
Furthermore, the present invention provides a toilet flushing device that can automatically return the lever to its initial position in the event of a power outage.

[Means for Solving the Problems 1] The toilet flushing device of the present invention is provided in the cistern 2 of the flush toilet 1, and has a discharge port 3 for discharging the water stored in the cistern 2.
tF4 that opens and closes, a string-like body 5 whose one end is connected to the valve 4, a lever 6 whose other end is connected to the string-like body 5 and which pulls up the string-like body 5, and a lever 6 that rotates. In a toilet flushing device configured with an electric drive device ra7 for moving, a reduction gear i! is interposed between the electric drive device 7 and the lever 6. The shaft part 6a of the lever 6 is loosely inserted into the hole 18 of the final stage gear 15 of cW111 so as to be movable in the axial direction and rotational direction, and the shaft part 6a is provided so as to protrude in a direction crossing the axial direction. A spring force is applied in a direction to engage the pin 24 with a pin engaging portion 19 provided on the gear 15, and a rotational spring force is applied to the lever 6 to rotate the valve 4 from the open position to the closed position. A stopper 31 is provided to prevent further rotation of the lever 6 when the lever 6 is rotated from the WRIII position of the valve 4 to the closed position.
The tip of the pin 24 is pressed in the axial direction against the spring force to release the pin 24 from the pin retaining part 19. Moreover, by adopting this configuration, the problems of the conventional example described above are solved.

[Operation 1] Therefore, the shaft portion 6a of the lever 6 can be moved freely in the axial direction and rotational direction into the hole 18 of the final stage gear 15 of the reduction gear 1f11 interposed between the electric drive device 7 and the lever 6. A pin engaging portion 19 is provided on the gear 15 with a pin 24 that is loosely inserted and protrudes from the shaft portion 6a in the j direction (crossing the axial direction).
Since the F1 material 21 is provided to apply a spring force in the direction of engagement with the deceleration device 11 when the electric drive device 7 is driven,
The rotation of the gear 15 at the final stage is transmitted as the rotation of the detail 6a of the lever 6 to open the valve 4. If a power outage occurs while the electric drive device 7 is being driven, The lever 6 may stop mid-rotation, but in such a case, press the engagement release pressing part 41 at the tip of the pongee 8Is 6a directly or with a jig or the like to release the pin 2.
4 and the pin retaining portion 19, the lever 6 is returned to its initial position by the rotation spring force of the spring member 21, and the valve 4 is closed by water flow or its own weight. The engagement mechanism between the speed reducer 11 and the lever 6 can release the engagement and automatically return the lever 6 to its initial position by simply pressing the engagement release pressing portion 41 at the tip of the shaft portion 6a. In addition, since the engagement can be released by pressing the shaft portion 6a, there is no longer a need for a conventional manual handle that can be held and rotated by hand.

[Examples] Hereinafter, the present invention will be described in detail based on examples shown in the accompanying drawings.

The cistern 2 is for storing water to be flushed into the flush toilet 1, and the cistern 2 may be of the type attached to the rear of the flush toilet 1, as shown in Fig. 1, or it may be placed away from the flush toilet 1. It may be of any type. As shown in FIG. 2, the bottom of the cistern 2 is provided with a discharge port 3 for discharging the water stored in the cistern 2 into the flush toilet bowl 1. The discharge port 3 is provided with a valve 4 for opening and closing the discharge port 3. The valve 4 is rotatably supported by a shaft 8 near the edge of the discharge port 3, and one end of a string-like body 5 such as a hook 9 is connected to the end opposite to the shaft-supported portion of the valve 4. It is. The other end of the string-like body 5 is connected to the tip of a lever 6 for pulling up the string-like body 5. A case 9 is attached to the I wall of the cistern 2, and the tls
As shown in Fig. 3, Fig. 4, and Fig. WS5, an electric drive device 7 is installed inside, and the electric drive unit 7 is installed inside. The driving force of the lJ drive unit rIi7 is transmitted to the lever 6 via the reduction gear 11, the lever 6 is rotated to pull up the string-like body 5, and the amount of rotation of the lever 6 is selected to completely open the valve 4. The lever 6 can be freely selected between a state where the lever 6 is driven to a position where a large amount of water is flowed, and a state where the lever 6 is driven to a position where tF4 is opened halfway and a small amount of water is flowed. In the embodiment shown in the accompanying drawings, a stepping motor is used as the electric drive device 7, and is attached to the case body 9a of the case 9 with screws. The rotation of the output shaft 10 of the electric drive device 7 is controlled by a reduction gear device 1 comprising a plurality of teeth 111.
1 to reach the lever 6 via the lever 6.

A hole 14 is bored in the plate 13 of the receiver installed on the pair of bosses 12 provided on the case body 9a, and the shaft portion 6a of the L-shaped lever 6 is rotatably inserted into the hole 14 of the plate 13. The shaft portion 6a has teeth 4t15 at the final stage of the reduction gear 11.
The hole 18 is rotatably loosely fitted. A cylindrical body 16 having a spacer is loosely fitted between the gear 15 and the plate 13 so as to be freely rotatable. Here, in the embodiment of the attached drawings, the cylinder body 16
Although the gear 15 at the final stage is separate from the gear 15, they may be formed integrally. A groove is provided at the bottom of the cylinder ff1S17 and serves as a pin engaging portion 19.

A spring receiver 20 is fixed to a portion of the shaft portion 6a of the lever 6 that protrudes beyond the plate 13, and the spring receiver 20 rotates together with the shaft s6a of the lever 6. The receiver is provided with a spring material 21 between the plate 13 and the spring receiver 20.
is the provision.

This spring material 21 is constituted by a coil spring, and one end portion 21a of the coil spring is locked to a locking portion 22 provided on the plate 13.
a21b is locked to the locking portion 23 of the spring receiver 20.

A pin 24 is attached to the shaft portion 6a, and this pin 24
is normally engaged with the pin engaging portion 19, and this engaged state is maintained by the urging force of the spring member 21 which moves the shaft portion 6a in the direction of arrow A in FIGS. 3 and 5. It has become. By locking both ends of the spring member 21 made of a coil spring, a rotating spring force in one direction is applied to the spring receiver 20. When the lever 6 rotates in the direction to open the valve 4, the spring member 21 The spring force that tends to rotate the lever 6 in the direction in which the valve 4 closes is released. Lever 6-1
The lllff36a rotatably passes through the hole 25 of Δ9h in the case 9, and also rotatably passes through the hole 26 in the case body 9a. When the case 9 is installed inside the cistern 2 as shown in FIG. It is inserted into.

Here, it is preferable that the disengagement pressing part 41 at the tip of the shaft part 6 not protrude outside from the hole 42 of the cistern 2, as shown in FIG. Even so, it is best to make it stick out a little. In addition, when the case 9 is attached to the outside of the cistern 2 as shown in FIG. 5(b), the engagement release pressing part 42 at the tip of the shaft part 6a is made to slightly protrude outside from the hole 26 of the case body 9a. Alternatively, it may be located within the hole 26 and not protrude to the outside.

By the way, the electric drive device 7 consisting of a stepping motor
As shown in FIG. 8, the control signal from the control unit 27 is sent to the drive ffl 528, and the drive unit 28 outputs a drive signal to drive the electric drive consisting of a stepping motor.
It is designed to drive ff17. In FIG. 8, 29 is a toilet seat switch, and 30 is an operation switch. 1. The toilet seat switch 29 is turned on when a person sits on the toilet seat and turned off when a person stands up from the toilet seat. Further, the operation switch 30 is attached to, for example, a wall, and is a switch unrelated to the toilet seat switch 29.

When a person sits on the toilet seat, the toilet seat switch 29 is turned on as shown in FIG. Deceleration! & Pin 2 provided on the shaft portion 6a of the lever 6 in the pin engagement 5S19 of the final stage of the position 11.
4 is inserted and engaged by the spring material 21, so gear 1
(The lever 6 is set so that the rotation of the lever 6 can be transmitted as the rotation of the lever 6), the lever 6 is rotated by a certain angle in the normal rotation direction, the string-like body 5 is pulled, and the lever 6 is stopped after being rotated by a certain angle. Then, the valve 4 is opened to a half-open state as shown in FIG. 2(e), and a medium amount of the water stored in the cistern 2 is released from the discharge LJ3 to pre-clean the inside of the flush toilet bowl 1.

Then, after a certain period of time has elapsed, the stepping motor reverses, and the lever 6 rotates by a certain angle in the reverse direction, returning to the initial state and stopping. In this case, when the string-like body 5 is loosened,
The valve 4, which is in a half-open state, is sucked in by the suction force of the water flowing from the discharge port 3, and the valve 4 rotates to the state shown in FIG. 2(a), thereby closing the discharge port 3. Here, when the medium volume of water used in the pre-washing is released, the water level in the cistern 2 will drop to that level, so only the lowered amount will be automatically supplied with water by the water supply device (not shown). will be done.

Next, after an arbitrary period of time has passed, when you stand up from the toilet seat, the toilet seat switch 29 is turned off, and at the same time, the stepping motor rotates in the forward direction, rotates the lever 6 in the forward direction, and pulls the string-like body 5. Valve 4 is fully open as shown in Figure 2(b)! !
! When the valve 4 is rotated to a fully open state, the stepping motor rotates in the opposite direction, and the lever 6 is rotated in the reverse direction to the initial position.

When the valve 4 is fully open as shown in Fig. 2(b),
Like the conventional valves provided in this type of cistern 2, the valve 4 maintains its open state by itself until the water stored in the cistern 2 is completely discharged by the water discharging force. In this way, Cistern 2
When the water stored in the cistern 2 is completely discharged, a large amount of water rises to clean the inside of the flush toilet bowl 1. However, when the water stored in the cistern 2 is completely discharged, the water flow between the valve 4 and the discharge port 3 decreases, causing the valve 4 to flush. The cistern 2 closes due to its own weight as shown in Fig. 2 (1), and water storage in the cistern 2 starts again.

On the other hand, when urinating, use the operation switch 30 as shown in FIG.
By operating and turning on the stepping motor, the stepping motor rotates in the forward direction, rotating the lever 6 by a certain angle in the forward rotation direction.
is rotated in the normal rotation direction by a certain angle, the string-like body 5 is pulled, and the string member 5 is stopped after being rotated by a certain angle, and the valve 4 is opened to a half-open state as shown in Figure 2 (e), and the inside of the cistern 2 is opened. The inside of the flush toilet bowl 1 is flushed by discharging a medium amount of the stored water from the discharge port 3, and after a certain period of time, the stepping motor is reversed and the lever 6 is rotated by a certain angle in the reverse direction to return to the initial state and stop. In this case, when the string-like body 5 is loosened, the valve 4, which is in a half-open state, is sucked in by the suction force of the water flow flowing from the outlet 3, and the valve 4 rotates to the state shown in FIG. 2(a). and close the discharge port 3. Here, when the medium volume of water used in the above-mentioned washing is released, the water level in the cistern 2 will drop to its capacity, so the water supply device (not shown) will automatically supply water to only the lowered amount. It will be done.

By the way, if the electric drive device 7 is stopped due to a power outage or the like while the electric drive device 7 is being driven to rotate the lever 6, the lever 6 will stop and the string-like body 5 will be pulled by the lever 6 to open the valve 4. Since it stops in the open state, the water stored in the cistern 2 is released from the discharge Lj3 and the water level decreases, so water is continuously supplied from the water supply device and continues to flow. In such a case, lever 6
When the disengagement pressing part 41 at the tip r1 of the shaft part 6a is pressed directly with a fingertip or indirectly with a jig such as a rod or a screwdriver, the shaft part 6a is released by the force of the spring material 21. When the pin 24 is pushed against the pin 24 and removed from the pin retaining portion 19, the lever 6 is rotated to the initial position by the rotational force of the spring member 21.
When it hits the stopper 31 provided on the case body 9a and stops at the initial position, the lever 6 rotates to the initial position, which loosens the string-like body 5 that was being pulled by the lever 6, and when the valve 4 is half open, the water flow causes the lever 6 to rotate to the initial position. In the fully open state, it rotates under its own weight to close the discharge port 3. Here, when the lever 6 returns to its initial position, the pin 24 provided on the lever 6 also returns to its initial position. In addition, in this state, since the suppression of the shaft portion 6a is released, the spring force of the spring material 21 causes the pin 2 to
4 is the pin retaining portion 1 at the bottom of the cylindrical portion 17 of the final stage gear 15
It is in elastic contact with the position shifted from 9. Next, when the power outage ends, the stepping motor is set to rotate in the reverse direction (for example, 180° reverse rotation), and the stepping motor rotates in the reverse direction, and the pin is attached to the bottom of the cylindrical portion 17 provided on the final stage gear 15. Since the gear 15 rotates with the pin 24 in elastic contact with the pin 24, the gear 15 stops when the pin engaging portion 19 engages with the pin 24. In this way, it is set to the initial state.

In the above embodiment, a stepping motor is used as the electric drive unit Wt7, but other drive means may be used.

[Effect of the invention 1 In the present invention, as described above, the deceleration gkI! is interposed between the electric drive 1ffi and the lever! The shaft of the lever is loosely inserted into the hole of the final stage gear of I, so that it can move freely in the axial and rotational directions, and a pin protruding from the shaft in a direction crossing the axial direction is inserted into the gear. Engage with the provided pin engagement part)j
Applying a stiffening force in the direction of the valve and moving the lever from the open position to the closed position 1
Bah for applying rotational stiffness force to rotate toward the d side
A stopper is provided to prevent further rotation of the lever when the lever rotates from the open side of the valve to the closed position. Since it is used as a disengagement pressing part for disengaging the pin from the pin retaining part by pressing in the direction, normally the pin and the pin engaging part are engaged by the force and the electric drive device is driven. can be transmitted to the lever via the deceleration VC position to open the valve. However, in the event of a power outage while the electric drive device is in operation, the press part for releasing the engagement at the tip of the detail can be By pushing directly or with a jig, etc., the pin and pin retaining part are released, the lever is automatically returned to the initial position by the rotational spring force of the spring material, and the stopper allows the lever to be stopped at the correct initial position. In addition, the valve can be closed by water flow or its own weight, and in this way, with a simple configuration, it is possible to engage, release the engagement, and automatically return the lever to its initial position when the power is turned off. The engagement can be released by simply pushing the engagement release suppressing part at the tip of the part, and as a result, there is no need for a conventional manual handle that is held and rotated by hand, but a manual handle that is held and rotated by hand is provided. Unlike other objects, the parts exposed to the outside do not become large and unsightly.

[Brief explanation of drawings]

Figure 1 is an overall side view of the present invention, Figures 2 (a), (b) (e
) is an explanatory diagram of the fully closed state of the same valve, the fully open state discharging a large amount of water, and the half open state discharging a small amount of water. Figure 3 is an exploded view of the same electric drive device, speed reducer, lever, etc. A perspective view, Figure @4 is a plan view of the same as above with the lid removed, Figures 5 (a) and (b) are side sectional views of one embodiment of the above, and side sectional views of another embodiment, and Figure 6. is the toilet seat switch when defecating,
FIG. 7 is an explanatory diagram of the operation of the stepping motor and lever; FIG. 7 is an explanatory diagram of the operation of the operating switch, stepping motor, and lever during urination; FIG. 8 is a block diagram for explaining the control of the electric drive device of the present invention. 1 is a flush toilet, 2 is a cistern, 3 is a discharge-14 is a valve, 5 is a string-like body, 6 is a lever, 6a is a detail, 7 is an electric drive VC position, 11 is a speed reducer, 15 is a gear, 18 19 is a hole portion, 19 is a pin engaging portion, 21 is a stiffener, 24 is a pin, 31 is a stopper, and 41 is an engagement release pressing portion.

Claims (1)

[Claims] (1) A valve located in the cistern of the flush toilet that opens and closes the outlet to release water stored in the cistern, a string-like body whose one end is connected to the valve, and the other end of the string-like body are connected. In a toilet flushing device constituted by a lever for pulling up a string-like body and an electric drive device for rotating the lever, the last stage of the speed reduction device is interposed between the electric drive device and the lever. A pin engagement part in which the shaft of a lever is loosely inserted into the hole of the gear so that it can move freely in the axial and rotational directions, and the gear is provided with a pin that protrudes from the shaft in a direction that intersects with the axial direction. A spring material is provided to apply a spring force in a direction to engage the valve and to apply a rotational spring force to the lever to rotate from the open position of the valve toward the closed position. A stopper is provided to prevent further rotation of the lever when it has rotated to the position, and the tip of the lever shaft is pressed in the axial direction against the spring force to engage the pin. 1. A toilet flushing device, characterized in that the toilet flushing device is configured as a disengagement pressing portion for disengaging from the toilet flushing device.