JPS6052260B2 - Automatic toilet flushing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic toilet flushing device that can flush a flush toilet without touching and operating levers, cocks, strings, push buttons, etc. in the flush toilet.

This kind of conventional toilet automatic flushing device will be explained with reference to FIGS. 1 and 2. It consists of a sensing part A and an operating part B, and the sensing part A is attached to an appropriate position such as a wall surface inside the toilet. A light emitting element that emits light is installed inside the protrusions 2 and 3 at both left and right ends of the case 1, and a light emitting element that emits light is installed in one of the protrusions 2, and the light projected from the light emitting element is received in the other protrusion 3. A light-receiving element is installed inside, and when the finger is placed in the recess between the protrusions 2 and 3 as shown in the first figure to block the light projected from the light-emitting element to the light-receiving element, the actuating part B is connected via the connection cord 4. Outputs a signal to operate the

In addition, 5 in the figure is a plug and a cord connected to an AC commercial power source. The actuating part B is an example installed in a water tank 6. A connecting tube 8 connecting the actuating part B is inserted into the upper part of an existing overflow pipe 7, and is fixed by tightening the mounting screws 9 and 10, and the solenoid rod 11 is fixed. A solenoid 12 that can freely move up and down, and an L-shaped rod 15 connected by a pin 14 to an inverted triangular connecting part 13 at the tip of the solenoid rod 11, penetrates the horizontal part of the L-shaped rod 15 and is pivoted to a guide piece 16 17, Solenoid rod 11
and a crank-shaped swinging lever 18 that swings up and down about a pivot 17 as a result of vertical movement of the swinging lever 1.
Hook hanging holes 18a, 18b, 18 provided through the tip of 8
Hang the hook 19 on one of c, and attach the chain 20.
It is connected to the packing 21 via. Then, when a signal is input from the sensing section A through the connection cord 4, the solenoid 12 is energized, the solenoid rod 11 is retracted upward, and the swing lever 18 is moved upward via the L-shaped rod 15. As a result, the packing 2 is attached via the hook 19 and the chain 20.
1 is unfitted from the discharge port 22, the water stored in the water tank 6 flows from the discharge port into the discharge pipe 23 and is injected into the toilet bowl (not shown).After a certain amount of water has been ejected, the solenoid 12 is demagnetized. Then, the solenoid rod 11 moves downward and the packing 21
is fitted into the discharge port 22, and the water washing is completed. Conventional automatic flushing devices for toilets are constructed and operated as described above, but since the solenoid 12 is not waterproof, normally in the case of a tank type, water is stored in the tank 6 by ejecting water into the tank 6 for washing hands. Since the water flows down in a funnel-like manner, water droplets that splash up may adhere to the water.
The solenoid 12 is easily affected by the adverse effects of moisture in the water tank 6, and the inverted triangular connection portion 13 of the solenoid rod 11 is energized and the solenoid rod 11 is retracted upward as shown in the second figure. As a result of the type of device that collides with the solenoid 12 each time, the sound emitted at the time of the collision is loud, and the screws may come loose due to the impact.
Furthermore, since the packing 21 is simply suspended by the crank-shaped swinging lever 18 as shown in the figure, the lifting force of the packing 21 may be biased, or the packing 21 may be misaligned due to vibration, causing it to not fit into the discharge port 22. However, there were problems such as the injection water not stopping because there were cases where the injection was not carried out reliably.

The present invention aims to provide an automatic toilet flushing device that solves the problems of the conventional automatic toilet flushing device.

An embodiment of the automatic toilet flushing device of the present invention will be described with reference to FIGS. 3 to 7.

The automatic toilet flushing device of the present invention is shown in FIG. It consists of a sensing part C and an actuating part D shown in FIGS. 5 to 7,
The sensing part C and the actuating part D are electrically connected by a connecting cord 30.

The sensing section C is attached to an appropriate position such as a wall surface in the toilet, and is mounted inside the outer case 31 as shown in FIG. A moving part control circuit x is installed inside, and continuous protrusions 32 are provided at both left and right ends of the outer case 31.
, 33, a light emitting diode LEDl, which is a light emitting element that emits light, is exposed and internalized on a surface opposite to one of the protrusions 32, and a light receiving element/barrel that receives the projected light from the light emitting element is provided on a surface opposite to the other protrusion 33. The electromotive force cell CdS is exposed inside,
Between the left and right continuous protrusions 32 and 33 is the light emitting diode L.
It is formed in a concave shape so that the light projected from EDl to the photovoltaic cell CdS can be blocked by positioning the hand between them.

In the figure, 34 is a plug and cord for connecting to a commercial AC power source (AClOOV), and LED 2 is a light emitting diode that indicates that the drive section control circuit x is in operation. The actuating part D is attached to a water tank 35 that stores water for washing, and to an inner end portion of a water pipe 36 that introduces water through the water tank 35, and includes a float 37 that can float according to the amount of water stored in the water tank 35. A water tank 35 is opened and closed by floating up and down, and is used for washing hands through a vibrator (not shown) connected to a connection port 38.
An introduction control valve part 39 that can freely control the flow of water introduced into the water tank 35 in a funnel-like manner from an upper lid having a funnel shape (not shown) that is injected diagonally downward, and discharges the water stored in the water tank 35 to a toilet bowl (not shown). A drainage control valve 44 is attached to the inner end of the discharge pipe 40 that penetrates the water tank 35, has a protrusion 42 that can be fitted into the discharge port 41, and can freely swing up and down about a pivot 43. The discharge hole 46 is connected to the discharge port 4.
1 and an overflow pipe 4.
5 with mounting brackets 48, 49, bolts and nuts, and is housed in a waterproof structure inside an outer case 51 on a back plate 50, and a control signal inputted from the sensing section C via the connection cord 30. The horizontal portion 53a of the hook rod 53, which is connected to a solenoid rod (not shown) that can freely move up and down, of a silent solenoid 52 controlled by the The support 56 passes through a through hole of a swinging lever 57 that can freely swing up and down about the pivot 56, penetrates into the stopper hole 54 of the stopper piece 55, and can be freely locked at the upper and lower peripheral edges of the stopper hole 54. The lower end is fixed to the top of the drainage control valve 44 to a hook 58 suspended from an appropriate one of the hook hanging holes 57a, 57b, and 57c formed through the tip of the swinging lever 57. By selecting the hook hanging holes 57a, 57b, 57c of the hook 58 and selecting one of the stopper balls 59a group of the connecting chain 59 as described above, , are connected so as to be adjustable so that the drainage control valve 44 can be optimally swung up and down by the vertical swinging of the swinging lever 57, and the drainage control valve 44 is controlled by a control signal input from the sensing section C via the connection cord 30. and a drive section 60 that is vertically swingable.

Next, another drive unit 61 shown in FIG. 8 will be explained. The same members as those in the first embodiment are denoted by the same reference numerals. The drive unit 61 is fixed to the water tank 35.
The lower end of the connecting chain 59 is fixed to the top of the drain control valve 44 as in the first embodiment.

The drive unit control circuit x consists of an excitation circuit X1 for the solenoid coil 52C of the silent x solenoid 52 of the drive units 60 and 61, and an excitation control circuit X2 that controls the opening and closing of the excitation circuit Branches from the plug and cord 34 connected to the AC power source, and fuses F1
, a bidirectional 3-terminal thyristor DTS as a switching element of the excitation circuit The circuit is configured such that a varistor VAR that absorbs the surge voltage generated when opening and closing the solenoid coil 52C is connected in parallel to the solenoid coil 52C. The excitation control circuit X2 has a fuse F2
The following elements are connected between the outputs 63 and 64 of a power supply circuit consisting of a full-wave rectifier circuit FR2 having four transformer TRl diodes configured as a bridge circuit and a smoothing capacitor C1. That is, the above-mentioned outer case 3 is connected in series with the resistor R1.
A light emitting diode LEDl installed inside is connected to the protrusion 32 of the outer case 31, and the protrusion 33 of the outer case 31 is connected in series with the resistor R2.
A photovoltaic cell CdS and a variable resistor R1 for sensitivity adjustment are connected to each other, and the base of the transistor Trl is connected to the photovoltaic cell CdS and the variable resistor VRl via a resistor R3.
The collector is connected to the power supply circuit output 63 via the resistor R4, and the emitter is connected to the self-holding transistor T.
Connect to the collector of r2. Self-holding transistor Tr
The emitter of No. 2 is connected to the power supply circuit output 64. The collector of the transistor Trl is connected to the base of the transistor Tr3 via a resistor R5, a capacitor C2, and a small Zener diode. A resistor R6, a diode D1, and a capacitor C3 are connected between the emitter and the base of the transistor Tr3. A resistor R7 is interposed between the collector of the transistor Tr3 and the power supply circuit output 63, and the collector is connected to the base of the self-holding transistor Tr2. Transistor Tr4
The base of is connected to the collector of the transistor Tr3 via a resistor R8, and the resistor R9 is connected between the emitter and the base.
The collector is connected to the power supply circuit output 63 via a resistor R1O. The base of the transistor Tr5 is the diode D2.
, are connected to the collector of the transistor Tr4 via the resistor R1l. The emitter is grounded via a resistor R13, and a resistor R12 and a capacitor C4 are connected between the emitter and the base. The collector has a resistor R connected between the collector and the power supply circuit output 63 in series with a light emitting diode LED2 that lights up during operation of the drive section control circuit X to indicate that it is in operation.
14 is connected, and a light emitting diode LED3, which forms a pair with the phototransistor FTr and constitutes a photocoupler FCU, is connected in series with the resistor R15. The phototransistor FTr is connected to the gate G of the bidirectional three-terminal thyristor DTS together with the resistor R16. The drive unit control circuit X
Since it is constructed as above, the light emitting diode LEDl
When the projected light that is constantly projected onto the photovoltaic cell CdS is cut off, the output of the photovoltaic cell CdS becomes low and the transistor Trl is turned off, so that the capacitor C2 changes to the polarity shown in the figure through the resistors R4 and R5. When the capacitor C3 is charged with the same polarity as shown in the figure, the transistor Tr3 is turned on at a constant voltage level, and the self-holding transistor Tr2 whose base is connected to the collector of the transistor Tr3 is turned off. Even if the projected light between the photovoltaic cell CdS and the photovoltaic cell CdS is immediately interrupted once it is released,
Ignore it for a certain period of time.

On the other hand, since the transistor Tr3 is turned on, the transistor Tr4 is turned off, and the capacitor C4 is connected to the resistor R.
1O, diode D2, and resistor R1l, the transistor Tr is charged to the polarity shown in the figure at a constant voltage level.
5 is turned on, the light emitting diode LED2 connected to the collector of the transistor Tr5 lights up to indicate that it is in operation, and the photocoupler FC
Since the light emitting diode LED3 of U also lights up, the phototransistor FTr receives the projected light of the light emitting diode LED3 and sends an output signal to the bidirectional three-terminal thyristor DTS.
is applied to the gate G of. Bidirectional 3-terminal thyristor DT
When a signal is applied to the gate G, S starts conducting, that is, the excitation circuit X1 is closed, and the full-wave rectifier circuit FRl is closed.
When the full-wave rectified current flows to the solenoid coil 52C of the silent solenoid 52, the solenoid rod (not shown) is initially waiting at the lower limit position, that is, the inductance of the solenoid coil 52C is a small value. Because of this, a large current flows transiently, but it is absorbed by the varistor book.

By energizing the solenoid coil 52C, the solenoid rod, which was initially waiting at the lower limit position, moves upward together with the hook rod 53. This state is continued by discharging the capacitor C3 between the base and emitter of the transistor Tr3 after the capacitor C2 is fully charged, and the transistor Tr3 is turned off at a certain constant value, and therefore the transistor Tr4 is turned on and the transistor Tr5 is OFF
Then, the light emitting diode LED of the photocoupler FCU
3 stops emitting light, the phototransistor FTr is turned off, and the input to the gate G of the bidirectional three-terminal thyristor DTS is stopped.
The terminal thyristor DTS is turned off, i.e. the excitation circuit
This continues until 1 is opened. Drainage control valve 4 driven by a silent DC solenoid 52
4 open time, resistors R4, R5, R6, capacitors C2, C3, diode D1, Zener diode Z
The values between D can be changed and adjusted as appropriate. On the other hand, when the transistor Tr3 is turned off, the self-holding transistor Tr2 whose base input is the collector output of the transistor Tr3 is turned on.
Since the emitter and base of the transistor Trl are closed, from then on, if the projection light between the light emitting diode LEDl and the photovoltaic cell CdS is interrupted, the above-described operation is repeated again. Since the drive unit control circuit X of the sensing unit C operates as described above, the operation of the automatic flushing device of the present invention as a whole including the operating unit D will be explained as follows: When a specified amount of water is stored in the water tank 35, The float 37 is in a floating state, the introduction control valve section 39 is closed, and a specified amount of water is stored in the water tank 35.

Water washing by the automatic water washing device of the present invention is carried out by: - a light emitting diode LEDl mounted in the protrusion 32 of the outer cover case 31 which is internal to the driving part control circuit X of the sensing part C; and a photovoltaic cell CdS mounted in the protrusion 33; If the projection light between the projection parts 32 and 33 is blocked by placing the finger in the concave portion between the continuous protrusions 32 and 33, the drive unit control circuit x operates as described above, and the drive units 60 and 61 installed in the water tank 35 Since the solenoid coil 52C of the silent solenoid 52 is excited via the connection cord 30, the hook rod 53 moves upward together with the solenoid rod, and the swinging lever 57 moves upward around the pivot 56 to move the hook rod 53 upward. As the horizontal portion 53a swings and stops until it comes into contact with the upper peripheral end of the stopper hole 54, one of the hook hanging holes 57a, 57b, and 57c at the tip of the swing lever 57 opens. A drain control valve 44 whose lower end is fixed to the top of a connecting chain 59 via a hook 58 and a connecting chain 59 swings upwards about a pivot 43 to open the outlet 41 of the protrusion 42.
Since the fitting is released, the water stored in the water tank 35 flows into the discharge pipe 40 from the discharge port 41 and is injected into the toilet bowl (not shown) via the discharge pipe 40. Then, as described above, when a certain period of time has elapsed and the solenoid coil 52C is demagnetized, the hook rod 53 moves downward together with the solenoid rod, and the hook
As the horizontal portion 53a of the rod 53 abuts and locks against the lower end periphery of the stopper hole 54 and the swing lever 57 also returns to the state shown, the drainage control valve 44 also fits the protrusion 42 into the discharge port 41. The state will be restored. On the other hand, when the water stored in the water tank 35 is used for flushing and the water storage surface falls, the float 37 descends according to the water storage surface, so the introduction control valve section 39 opens and connects the water flowing in from the water conduit 36 to the connection port 38. It squirts diagonally downward onto the funnel-shaped upper lid (not shown) of the water tank 35 via a vibrator (not shown) for washing hands, and falls into the water tank 35 from the opening at the bottom of the funnel-shaped part of the funnel-shaped upper lid (not shown), and as a result, When the water storage level rises, the float 37 also rises accordingly, and when the specified water storage amount is reached, the introduction control valve section 39 closes and water supply to the water tank 35 is stopped. As described above, in the present invention, it is possible to flush the flush toilet without directly touching the lever, cock, string, push button, etc., and the amount of water used at one time is constant regardless of individual differences. It is effective in preventing the infection of pathogenic bacteria, especially in hospitals and restrooms used by a large number of people. In addition to not wasting water more than necessary, the device operates according to the will of the person by inserting his or her hand into the sensor C, which is clean and has little trouble, and is installed away from the toilet bowl. The silent solenoid 52 used in the drive units 60 and 61 installed in the water tank 35 has a waterproof structure with an outer cover case 51. The water injected for cleaning falls into the water tank 35 and has improved durability against adhesion of water droplets etc. that splashed up and moisture in the water tank 35. Furthermore, in the conventional solenoid 12, the solenoid rod The inverted triangular connecting portion 13 of the silent DC solenoid 52 collides with and locks the solenoid 12 each time it retracts upward, and is affected by noise and impact. Unlike the conventional connecting part 13, the silent solenoid 52 does not have a collision-locking part, and as the name suggests, it is quiet, and there is no adverse effect such as loosening of the mounting screws due to the impact in the event of a collision. The drainage control valve 44 is no longer connected to the pivot 43.
It is configured to be able to swing up and down, and other movements such as in horizontal directions that would prevent it from being reliably inserted into the outlet 41 are restricted, ensuring that it is always inserted reliably into the outlet 41, thereby reducing waste of water. It has excellent effects such as no need to worry.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a state in which the light projected from the light emitting element to the light receiving element is blocked in the sensing section, Fig. 2 is a partially cutaway oblique view of the conventional actuating section, and Fig. 3 is a diagram of the sensing section of the device of the present invention. An external perspective view, and Figure 4 is a circuit diagram of the drive unit control circuit included in the sensing unit.
Figure 5 is a side view of the operating part installed in the water tank, Figure 6 is a view seen from the direction indicated by the line in Figure 5, Figure 7 is a partial vertical sectional view of the vicinity of the drainage control valve, FIG. 8 is an explanatory diagram of an attached state of another embodiment of the drive section. C...sensing section, D...actuating section, X...
...Driver control circuit, X1...Excitation circuit, X
2... Excitation control circuit, 30... Connection cord, 35... Water tank, 40... Discharge pipe, 4
1...Discharge port, 42...Protrusion, 43.
... Pivotal support, 44 ... Drainage control valve, 45.
...Overflow pipe, 47...Drainage section, 48, 49...Mounting bracket, 50...
Back plate, 51... Outer case, 52...
Silent solenoid, 53...Hook/rod, 60
, 61... Drive unit, 62... Hook fitting.

Claims (1)

[Claims] 1. A light-emitting element and a light-receiving element are mounted face-to-face so that the projected light from the light-emitting element to the light-receiving element can be freely blocked, and when the projected light is blocked by an insertion operation of a hand or a part of the body each time after using the toilet, an output is generated. A multi-stage transistor connected in as many stages as possible to alternately turn on and off so that it can output continuously for a predetermined period of time,
A circuit incorporating a self-holding transistor whose collector is connected to the emitter of the first-stage transistor and whose base is connected to the collector of the second-stage transistor so as to be unaffected even if the projected light is interrupted during the predetermined period. a sensing section equipped with the configured drive control circuit, a water tank for storing water for flushing, and a silent DC solenoid that is housed in a waterproof structure inside an outer case and operates based on the output of the drive control circuit of the sensing section. and a protrusion that can be fitted into a discharge port opening at the bottom of the water tank of a discharge pipe that communicates the water tank and the toilet bowl; An automatic toilet flushing device comprising a drain control valve whose one end is pivotally supported.