JP2002129621A - Driving opening/closing control device for automatic drain plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the inadvertent opening/closing operation of a drain plug caused by the erroneous push operation of an operating switch. SOLUTION: This opening/closing control device puts a motor M and opening/ closing lamps BL, RL in the locked state to become inoperative, and releases the lock to put the motor M and the opening/closing lamps BL, RL in the operative state only when an operating switch is pressed for a preset fixed time or longer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor-operated automatic drain cock provided at the bottom of a bathtub or the like, and more particularly to an automatic drain cock which prevents an opening / closing operation of the drain cock caused by an inadvertent pressing of an operation switch. The present invention also relates to an automatic drain plug drive opening / closing control device for preventing the drain plug opening / closing operation by a child's intriguing operation.

[0002]

2. Description of the Related Art An automatic drain plug device attached to the bottom of a bathtub or the like and opened and closed electrically by remote control is disclosed in JP-A-10-21.
No. 2747, which has been already filed and filed by the present applicant in Japanese Patent Application No. 2000-127098.

[0003] Such a prior art automatic drain plug is basically provided with a bathtub flange 40 as shown in FIG.
The operation of the operation switch 41 provided in the
This opens and closes a drain plug device 43 provided at the bottom of the device.

More specifically, when an operation switch 41 is pressed, a motor of a driving device 44 provided on the bathtub flange 40 is rotated, and the rotational force is converted to a linear driving force by a linear motion converting mechanism such as a screw mechanism. The wire 45 is moved forward or backward in the longitudinal direction, and the drain plug device 43 is opened and closed by the linear driving force of the wire 45.

[0005] In FIG. 17 (b), a drainage tube 46 defining a drainage hole is provided at the bottom of the bathtub 42.
A drain plug guide cylinder 48 is provided by a bracket 47 in the inside,
A support shaft 50 of the drain plug 49 is provided on the drain plug guide tube 48 so as to be vertically slidable. Then, the support shaft 50 is driven upward by the wire 45 from below to open the drain plug 49,
In addition, the drain plug 49 is configured to drop by its own weight and water pressure and close by moving the wire 45 downward.

[0006]

A conventional remote-operated automatic drain plug opening / closing switch is usually provided on a flange of a bathtub, so that it is inadvertently pushed by a hand or a foot while bathing or entering or leaving a bathtub. There is a high possibility of stepping on and malfunctioning. In addition, there is a high possibility that the child presses the open / close switch with an interest and malfunctions.

According to the present invention, even if the open / close switch of the automatic drainage tap is inadvertently pushed by a hand or foot, or pressed by a child, the lock is normally locked so that the drainage tap does not open / close. It is an object to realize a drive opening / closing control device of an automatic drainage cock.

Further, there is no display indicating the open / closed state in the conventional automatic drainage plug operated by remote control, and it is necessary to check whether the automatic drainage plug is open by checking the state of the drainage plug. However, the open / close state of the pop-up type automatic drain plug whose drain plug moves up and down as shown in FIG. 17 was difficult to understand. Therefore, even if the operator intends to close the automatic drain cock and presses the open / close switch, the operation such as opening the window may occur, causing the drainage of hot water and the loss of energy. .

According to the present invention, in such an automatic drain plug, the open / close state of the drain plug is illuminated by turning on a display lamp to improve the usability of the automatic drain plug, and by operating an unintended operation switch, etc. An object of the present invention is to realize an automatic drain cock opening and closing control device that can prevent the automatic drain cock from opening and closing.

[0010]

In order to solve the above-mentioned problems, the present invention comprises a driving device for electrically opening and closing a drain plug, and an opening and closing control device for operating the operating section to control the driving device. In the automatic drain cock drive opening and closing control device, the opening and closing control device locks the drive device to disable operation, and releases the lock only when the operation unit is operated under a preset time condition. The present invention also provides a drive opening / closing control device for an automatic drainage plug, comprising a lock device that enables the drive device to operate.

[0011] The lock device may be configured to lock the drive device when the operation of the operation unit is not performed again even after a predetermined period of time has elapsed since the operation of the operation unit. Is also good.

The preset time condition may be such that the lock is released only when the operation unit is pressed and operated continuously for a fixed time or more or a plurality of times within a short time. Here, within the short time is, for example, within about 1 to 3 seconds.

[0013] The lock device is configured to lock the drive device only when the operation unit is pressed a plurality of times continuously or within a short period of time for a predetermined time or more, and to release the lock state. Is also good.

[0014] A second operation section dedicated to the operation of setting the drive device to a locked state and an unlocked state by the locking device may be provided separately from the operation section.

In order to solve the above-mentioned problems, the present invention provides a driving device for electrically opening and closing a drain plug, an opening and closing control device for operating the operating unit to control the driving device, and an opening and closing state of the drain plug. A drive opening / closing control device for an automatic drainage plug having an opening / closing display portion for displaying the opening / closing display portion, wherein the opening / closing control device turns on the opening / closing display portion by a push operation once, and further drives the drive device by a next push operation. A drive opening / closing control device for an automatic drainage plug, which is operable.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of an automatic drain plug drive opening / closing control apparatus according to the present invention. FIG. 1 is a view for explaining the overall structure of a bathtub and the like provided with a drive opening / closing control device for an automatic drainage plug according to the present invention, and FIG. 2 is a view showing the structure of a drainage plug device.

1 and 2, a bathtub 2 is provided in a bathroom 1, and a drain plug device 4 is provided at the bottom 3 of the bathtub 2. The drainage plug device 4 includes a substantially cylindrical drainage tube 5 defining a drainage hole, a drainage tube 6 attached to communicate with the drainage tube 5, and a drainage guide tube attached to the drainage tube 5 with a bracket 7. 8, a drainage plug 9, a part of the drainage plug 9, a support shaft 10 slidable in the guide tube 8 in the vertical direction, and a drainage plug slidable in the drainage guide tube 8 in the vertical direction. Axis 1
And a driving wire 11 for driving the support shaft 10 upward in contact with the support shaft 10.

The distal end 11 'of the wire 11 is slidably inserted into the drain plug guide tube 8, contacts the lower end of the support shaft 10, and can drive the drain plug 9 upward.
When the wire 11 moves downward, the drain plug 9 can be lowered by its own weight or the water pressure in the bathtub 2. FIG.
, The wire 11 is slidable in the guide tube 12 in the axial direction, is taken out of the drainage pipe 6 together with the protection pipe 12 ′, and is guided through the protection pipe 12 ′ to the automatic drain plug drive opening and closing control device of the present invention. Have been.

FIG. 3 is a diagram showing the entire structure of the automatic opening and closing control device for the automatic drain cock. The drive opening / closing control device for an automatic drainage plug according to the present invention includes a driving device 13 and an opening / closing control device 14. In FIG. 3, a mounting space 16 for mounting the drive opening / closing control device is formed in the flange 15 of the bathtub 2, and the drive opening / closing control device is mounted therein.

The driving device 13 includes a motor M, a lifting member 1
7, an open / close control device 14
Is composed of a control panel 18 having a control circuit to be described later, an operation switch SW, a close proximity switch L ₁ , an open proximity switch L _{2, and the} like, each of which is disposed in the mounting space 16 as shown in FIG.

In FIG. 3, an elevating member 17 is mounted in a mounting space 16 of a flange 15 of a bathtub so as to be vertically movable and non-rotatable about an axis. Rotary drive shaft 1 of motor M
The rotation drive shaft 19 and the elevating member 17 are configured to be screw-coupled so that the rotation member 9 rotates forward and backward, so that the elevating member 17 moves linearly only in the axial direction (vertical direction) without rotating. ing. The base end of the wire 11 is attached to the lower end of the lifting member 17.

When the motor M presses (operates) the operation unit (operation button) 21 for opening and closing the drain plug 6, the operation switch S provided on the control panel 18 is operated.
By pressing W, operations such as closing forward rotation, reverse rotation, and stop can be operated.

The control panel 18 and the motor M are connected to a water heater 20.
And a remote controller 22 provided in the kitchen, which is separate from the operation unit 21 provided on the flange 15 of the bathtub, for example.
It is possible to operate the remote control of the motor M by the remote switch. Then, the remote controller 22 may be configured to function as a dedicated second operation unit for operating the driving device in a locked state or an unlocked state with a locking device described later.

[0024] The side surface of the elevating member 17 and the magnet 23 is attached, which respectively detect the seating space wall in the vertical two attached has been closed proximity switch L ₁ and the open proximity switch L _2. Closing proximity switch L _1, when the elevating member 17 reaches the rising limit detects the magnet 23, the motor M is stopped, a state of discharge valve 9 is closed. Also, open proximity switch L _2, when the elevating member 17 reaches the lowering limit detects the magnet 23, the motor M is stopped, a state of discharge valve 9 is opened.

The operating section 21 is made of a material such as flexible plastic or rubber through which light is transmitted or semi-transmitted, and its peripheral edge is attached to the bathtub flange 15 in a watertight manner. On the surface 24, as shown in FIG. 3A, "open" and "closed" indicating opening and closing of the faucet device, respectively.
Is displayed.

The control panel 18 has an open lamp BL (a lamp for lighting and displaying that the drain plug is open) so as to correspond to the respective positions of the characters "open" and "closed" on the operation unit 21. ) And a closing lamp RL (a lamp for lighting and displaying that the drain cock is in a closed state). The user can know the open / closed state of the water faucet device by these open / closed display characters and lighting of the open / close lamp.

The above is the overall structure of the automatic opening / closing control device of the automatic drainage plug according to the present invention and the detailed structure of the driving device 13. Next, the opening / closing control of the drainage plug device 4, display of the open / closed state, and further, The opening / closing control device 14 that locks these driving operations and display operations will be described.

(Embodiment 1) FIG. 4 is a diagram for explaining the overall configuration of Embodiment 1 of the opening / closing control device 14. The feature of the opening / closing control device 14 is that, when the operation switch SW is continuously turned on for a predetermined period of time or longer, the locked state is released and the current open or closed state of the drain plug 9 is lit. The opening and closing of the drain plug 9 is made possible, thereby preventing the opening and closing operation of the drain plug 9 by an inadvertent operation of pressing the operation switch SW by mistake or momentarily pressing the child playfully. Things.

As shown in FIG. 4, the open / close control device 14 generally includes an input device 25, a control unit 26, and a lock device 27. Input device 25, the operation switch device 28, closing proximity switch _{L 1} and the open proximity switch L
₂ is provided. The control unit 26 is mounted on the control panel 18 and performs a control operation based on a program stored in a memory in response to an input signal from the input device 25.
(Microcomputer).

The lock device 27 locks or unlocks the operation of the output device 29 based on a control signal from the control unit 26. As the output device 29, a motor M (a stepping motor or the like as a driving device), an open lamp BL
(A blue lamp that illuminates and indicates that the drain plug 9 is open) and a closed lamp RL (a red lamp that illuminates and displays that the drain plug 9 is closed).

FIG. 5A shows an embodiment of the operation switch device 28. The operation switch device 28 includes an operation switch circuit 30, a clock pulse generator 31, and an AND switch circuit.
The circuit 32 includes a circuit 32, a counter 33 (pulse counter), a comparison circuit 34, and a switch setting unit 35.

The operation switch circuit 30 has a voltage V _{1 at} one end.
Is applied, the other end is grounded, and an operation switch SW and a resistor R are connected in series. The clock pulse generator 31 has a crystal oscillator and a frequency divider,
It is a well-known method that generates one pulse per second. Switch signal by operation switch SW and clock pulse generator 3
One pulse signal is connected to the counter 33 via the AND circuit 32 so as to be input.

The counter 33 is provided, for example, as shown in FIG.
As shown in, composed of four flip-flops FF ₁ ~ ₄ decimal counter which are connected in series (the counter to be displayed in binary 4 digits). Output ² 0 of each digit of the counter ^33, 2 ^1, 2 2, ^{2 3} (flip-flop F
Output signals (binary signals of “0” or “1” (L or H)) from the respective output terminals Q ₀ , Q ₁ , Q ₂ , and Q ₃ of F ₁ to F ₄ are sent to the comparison circuit 34. Is entered.

The comparison circuit 34 is connected to the switch setting unit 35. The setting value T of the comparison circuit 34 can be set by the switch setting unit 35. The set value T is used for locking or unlocking, opening / closing operation of the drain plug 9, opening / closing lamp B
This is a value that is a condition for the duration of pressing the operation switch SW for performing various operations such as lighting of L and RL. For example, when the continuous pressing time (predetermined fixed time for continuously pressing the operation switch SW) is 3 seconds or more, the set value T is set to “3”.

The set value T can be appropriately changed by the switch setting section 35, and the condition for continuously pressing the operation switch SW can be adjusted. The preset value T and the value n input to and counted by the counter 33 in this manner.
Are compared by a comparison circuit 34. If n ≧ set value T, the comparison circuit 34 outputs one pulse,
The comparison circuit 34 is connected so as to input to the input port of. At the same time, when the comparison operation is completed, the comparison circuit 34 is configured to input a reset signal of the counter 33 to the reset terminal CLR of the counter 33 so that the counter 33 can be reset.

Note that a matching circuit is provided instead of the comparison circuit 34, and the set value T (for example, T
= 3), when the same pulse is counted by the counter 33, the coincidence circuit may confirm the coincidence and output one pulse to the input port.

The counter 33 is provided with a switch setting section 35, a comparison circuit 34 and a coincidence circuit as shown in FIG. 5 (a), so that the set value T which determines the condition for continuously pressing the operation switch SW can be changed. may be set to, continuous pressing time conditions, when fixed, for example 3 seconds, output 2 ⁰ of each digit of the counter ^33, the 2 ^1, 2 ² outputs, as shown in FIG. 5 (b) A fixed circuit may be connected to the logic circuit 36 so that one pulse is obtained when three pulses are input to the counter 33 and input to the input port of the control unit 26.

Apart from the circuit for inputting such a continuous pressing signal to the control section 26, an input signal generated by pressing the operation switch SW is transmitted from the signal line of the operation switch SW regardless of the length of the pressing operation time. The input is input directly to the input port of the control unit 26 via the input line 37 of the branched operation switch signal.

As shown in FIG. 6 (a), the lock device 27 performs a locking operation connected to the output port of the control unit 26.
And a flip-flop FF ₅ for the cancellation. This flip-flop FF _5, the motor M, closed lamp RL,
The drainage plug 9 is connected to an output device operation circuit 38 having an open lamp BL, and controls the opening and closing of a power switch of the output device operation circuit 38, thereby setting the drain plug 9 in an unlocked state in which opening and closing operation is possible and a lock in which opening and closing operation is not possible. State can be switched.

The output device operation circuit 38 is normally but the power switch is in the OFF state (locked state), the output terminal Q is "H" (1 or high level voltage of the flip-flop FF ₅ for lock operation and release ), And the power switch is turned on while this is input to the output device operation circuit 38 and maintained.

Locking device 27 and output device operation circuit 38
FIG. 6 (b) shows a specific example. Flip-flop FF
The output terminal Q of No. ₅ is connected to the base of the switching transistor Tr. The output terminal Q is “L (0 or low level voltage)” in the locked state, and the transistor T
r is also in the OFF (non-conducting) state. The output terminal Q is “H (1 or high level voltage)” in the unlocked state, and the transistor Tr is in the ON (conductive) state.

This transistor Tr has a collector
Relay R are connected in series with being applied the voltage V _2. The relay R opens and closes a relay switch RS constituting a power switch connected in series to the power supply E. The emitter side is grounded. The lock device 27 is configured by the flip-flop FF ₅ , the transistor Tr, and the relay switch RS described above.

The power supply E and the relay switch RS are connected to each other.
M, a closed lamp RL (red run)
), An open lamp BL (blue lamp) is connected.
Motor M, closed lamp RL (red lamp), open lamp BL
(Blue lamps) are open / close switches SW_M, SW_R,
SW_BIt is opened and closed by. Open / close switch SW_M, S
W _R, SW_BIs the motor from the output port of the control unit 26
Forward rotation signal y₃, Motor reverse rotation signal y₄, Closed lamp lighting signal
y₆, Open lamp lighting signal y₅More well-known switch drive
Opening / closing is controlled via a mechanism.

The motor M uses a stepping motor or the like, and performs a forward or reverse rotation operation in response to a forward or reverse rotation signal from the control unit 26. When rotated forward, the elevating member 17 rises and pulls the wire 11 to close the drain plug 9, and when rotated in reverse, the elevating member 17 descends to push out the wire 11 and open the drain plug 9.

The open lamp BL is a lamp for lighting display that the discharge valve 9 is opened as described above, are turned on by opening the lamp lighting signal y ₅ from the control unit 26. The closing lamp RL is a lamp for lighting and displaying that the drain plug 9 is in a closed state, and a closing lamp lighting signal y from the control unit 26.
₆ lights up. These open / close lamps may be ordinary lamps, but may be LEDs or the like.

Embodiment 1 according to the present invention having the above configuration
The operation of the automatic drain cock drive control device will be described. First,
The overall operation of the drive control device will be described with reference to a timing chart shown in FIG.

In FIG. 7 (the same applies to FIGS. 11, 12, and 14 described later), SW indicates the ON / OFF state of the operation switch SW, RL indicates the ON / OFF state of the closed lamp, and BL indicates the open state. Indicates whether the lamp is on or off,
LK indicates whether the lock device 27 is in the locked state or the released state,
That is, it indicates whether the relay switch RS in FIG. 6B is OFF (locked state) / ON (unlocked state), M indicates rotation / stop of the motor, and x ₃ and x ₄ indicate the close detection signals, respectively. , 1/0 of the open detection signal.

As shown in FIG. 6B, since the relay switch RS is normally open, the output device operation circuit is always in a locked state, that is, in FIG. 7, LK is in a locked state. LK to when in the locked state, pushing the operating switch SW normally (FIG. 7 (b)), but enter a normal pressing signal x ₂ to the control unit, the motor M, the lamp RL, none of the BL does not work .

[0049] inputting a continuous pressing signal _{x 1} by pressing here the operation switch SW or T seconds to the control unit 26 (FIG. 7
(B)), the lock is released (FIG. 7 (c)), and the fact that the current drain plug 9 is open is illuminated by the open lamp BL (FIG. 7 (d)).

[0050] In this state, by entering the normal pressing signal x ₂ operates the switch SW (in the usual pressing this no such long 3 seconds) normally pushed to the control unit 26 (FIG. 7 (e)), the motor M is It rotates forward (Fig. 7 (f)) and the open lamp BL.
Is turned off and the closing lamp RL is turned on (FIG. 7 (g)).

[0051] In such an unlocked state, usually by pressing the operation switch SW usually pressed signal x ₂ the control unit 2
6 (FIG. 7 (h)), the motor M rotates reversely (FIG. 7 (r)), and the closing lamp RL is turned off and the opening lamp BL is turned on again (FIG. 7 (nu)). The motor M
Is closed detection signal _{x 3} in closed proximity switches _{L 1} (FIG. 7
(F)) and open proximity switch _{L 2} of the open detection signal _{x 4} is stopped (FIG. 7 (Yo)).

[0052] Then, the locking device 27, normal pressing operation (FIG. 7 (h)) automatically ON state (FIG preprogrammed predetermined time T ₁ minute was set at (e.g., 1 minute) after the operation switch SW 7 (R)) and the relay switch R
S is set to a normally open state (locked state). To release this locked state, enter the continuous press signal x ₁ press as operation switch SW of the above or T seconds to the control unit 26 (FIG. 7 (e)).

The above is the outline of the entire operation of the drive control device for the automatic drainage plug of the first embodiment. The more detailed operation is described below with the drainage plug 9 closed from the open state (see FIG. 2B). This is an operation for setting the state (see FIG. 2A),
5 is set to T = 3, and when the operation switch SW is kept pressed for at least 3 seconds, the lock is released and the drain plug 9 is set.
About the case where the opening and closing operation of
This will be mainly described with reference to FIGS.

The user presses the operation switch SW for 3 seconds or more (FIG. 8A). Then, in FIG. 5A, the operation switch SW is turned ON for 3 seconds or more, and the switch signal for 3 seconds or more and the clock pulse from the clock pulse generator 31 are input to the AND circuit 32, and the operation signal is output for 3 seconds or more. Are input to the counter 33.

In the counter 33, the input pulse number n
The comparison unit 34 compares the value n with a value T = 3 (“3” when the continuous pressing time condition is 3 seconds) preset by the switch setting unit 35. n ≧ 3
For the control unit 26 outputs one pulse signal x ₁
(X ₁ = 1) (FIG. 8 (b)), and a reset signal is input to the reset terminal of the counter 33 to reset the counter 33.

[0056] For example, when pushing momentarily incorrectly the operation switch SW, or a child, etc., or pressed in play, if not ON operation switch SW is more than 3 seconds, the signal x ₁ is not generated from the comparator circuit 34 However, since only the counter reset signal is generated, the lock release and the automatic drain plug 9 described below do not perform the closing operation.

In FIG. 4, the control unit 26 outputs a signal x ₁
Is input (x ₁ = 1), the CPU performs the control operation according to a predetermined program stored in the memory, and outputs the lock release signal y ₁ to the lock device 27 from the output port. As a result, the following unlock operation is performed.

[0058] FIG. 6 (a), the (b), the flip-flop FF ₅ of the locking device 27, when the lock release signal _{y 1} is input to the terminal S, the terminal Q becomes H level,
As a result, the transistor Tr is turned ON, and the relay R
Operates to turn on the relay switch RS of the power supply E. In short, the lock by the lock device 27 is released (FIG. 8C). As a result, the motor M, the closing lamp RL (red lamp), and the opening lamp BL (blue lamp)
Is in an operation standby state.

[0059] At the same time, by the operation of the CPU based on a predetermined program by the control unit 26, the open lamp lighting signal _{y 5} is output from the output port and _(y 5 = 1), opened and closed by operation of the open lamp lighting signal _{y 5} switch SW _B is turned operation of ON and open lamp BL is performed (FIG. 8 (d)).

The user confirms that the current open / close state of the drain plug 9 is open by watching the lighting of the open lamp BL, and then normally sets the operation switch SW (push operation for less than 3 seconds). Press to turn on the switch. Then the normal pressing signal x ₂ directly fed by the input line 37 to the input port.

When the normal pressing signal x ₂ = 1 is input at this timing (FIG. 8 (e)), the control unit 26 operates the CPU based on the program, and the normal rotation signal y ₃ = 1 and the closing ramp. The lighting signal y ₆ = 1 is output to the output device operation circuit, and the open lamp lighting signal is set to y ₅ = 0. This turns off the open lamp BL and turns on the closed lamp RL (FIG. 8).
(G)).

On the other hand, according to the normal rotation signal y ₃ = 1 output from the output port, the output device operation circuit
_M turns on, and the motor M rotates forward. When the motor M rotates forward, the elevating member 17 is raised, the wire 11 is pulled, and the drain plug 9 is driven down in the closing direction (FIG. 8).
(F)).

Then, the elevating member 17 is raised to some extent.
And magnet close proximity switch L ₁Is detected and turned ON,
Close detection signal x₃And this is controlled as shown in FIG.
The closing detection signal x₃= 1 (FIG. 8
(F)). With this input signal,
By the control operation of the CPU according to the above, the motor normal rotation signal is changed to y.₂
= 0, motor M is stopped and drain cock 9 completes closing operation
(FIG. 8 (h)).

Press the operation switch SW normally (see FIG. 8).
(E) After T ₁ minute (for example, 1 minute) from), the CPU operates according to the program to generate a lock signal y ₂ = 1 and sends it to the reset terminal R of the lock FF ₅ . Then
The terminal Q of the locking FF ₅ changes from H level to L level, the transistor Tr is turned off, the relay R is demagnetized, the relay switch RS is turned off, and the output device operation circuit 38
Is locked (FIG. 8 (l)).

The drain plug closing operation in which the drain plug 9 is switched from the open state to the closed state has been described above. The drain plug opening operation in which the drain plug 9 is switched from the closed state to the open state will not be described. According to the flowchart shown in FIG. 9, the operation is performed in substantially the same manner as the flow in FIG.

(Embodiment 2) FIG. 10 is a view for explaining Embodiment 2 of a drive opening / closing control device for an automatic drainage plug according to the present invention. The overall configuration of the opening / closing control device according to the second embodiment is as follows:
This is almost the same as the opening / closing control device 14 of the first embodiment shown in FIGS. FIG. 10A illustrates an outline of a configuration according to the lock device 39 of the second embodiment, and FIG. 10B illustrates a specific configuration thereof.

The lock device 39 according to the second embodiment is different from the lock device 39 according to the first embodiment.
Is differs from the locking device 27 according to as shown in FIG. 10 (b), the relay switch RS is a normally closed switch, but always has to unlock the lock signal y ₂ is FF ₅ When a signal is input to the signal input terminal S, the transistor Tr is turned on, and the relay switch RS is opened to lock.

FIGS. 10 and 11 are timing charts mainly showing the structure and operation of the automatic drain cock drive opening / closing control device of the second embodiment (in this example, the start is in the open state).
It will be explained by. The operation circuit of the output device of the second embodiment includes:
The power supply circuit is normally closed and in an operation standby state.
That is, the lock is always released.

[0069] In this state, pressing the operating switch SW (FIG. 11 (a), (b ')) and, the normal signal _{y 3} or reversing signal _{y 4,} and a closed lamp lighting signal _{y 6} or open lamp lighting signal y ₅ is output from the control unit 26 to the operation circuit of the output device, the switch SW _M and the switch SW _R or the switch SW _L are turned on, and the motor M rotates forward or reverse (FIG. 11).
(B), (b ')), the drain plug 9 is driven to close or open, and the current open / close state of the drain plug 9 is lit and displayed by the closing lamp RL or the opening lamp BL (FIG. 11 (c),
(C ')).

[0070] Then, a predetermined time _{T 2} seconds the user has preset the operation switch SW (e.g., 3 seconds) press or a (FIG. 11 (d)), continued pressing signal _{x 1} is input to the control unit 26 performs the CPU control operation based on the program, and outputs a lock signal _{y 2} to the flip-flop FF _1.

[0071] Then, the OFF the relay switch RS FF ₁ output terminal Q of the flip-flop turns on the transistor Tr becomes H level, opens the power supply circuit, a locked state (FIG. 11 (e)). In short, when the lock by pressing user preset fixed time T ₂ seconds or more operating switch SW, are configured to be locked.

In this locked state, even if the user presses the operation switch SW in a normal way (in this example, a short press of less than 3 seconds) (FIG. 11F), the relay switch RS
Is in the OFF state, the open / close lamps BL and RL do not light up and the motor M does not drive.

To release the lock, the user presses the operation switch SW for a certain period of time T ₂ seconds (for example, 3 seconds) or more, as in the case of locking (FIG. 11 (g)).
When, is input continuously pressing signals x ₁ to the control unit 26 performs the CPU control operation based on the program, the lock signal y
Type ₂ to a reset terminal R of the flip-flop FF _1, a reset is performed, the transistor Tr is turned OFF, the power supply circuit becomes a source of the normally-closed state, the lock is released (FIG. 11 (h) ).

At the same time, at this time, the open lamp BL is lit to indicate that the drain plug 9 is in the open state (FIG. 11 (R)).
Thereafter, in the unlocked state, the motor M is rotated by a normal pressing operation of the operation switch SW, so that the opening and closing of the drain plug 9 and the display by the opening / closing lamp can be performed. The operations of the close proximity switch L1 and the open proximity switch L2 are the same as in the first embodiment.

(Embodiment 3) Next, a description will be given of a third embodiment of the automatic drain cock drive opening / closing control apparatus according to the present invention. The overall configuration of the drive opening / closing control device of the third embodiment is substantially the same as that of the drive opening / closing control device 14 of the first embodiment shown in FIGS.
The operation process based on the control program is different. FIG.
FIG. 9 is a diagram showing a timing chart for explaining features of the drive opening / closing control device 14 according to the third embodiment.

The feature of the drive opening / closing control device of the third embodiment is that the operation switch SW is pressed once and the opening / closing display lamps BL, RL
Is turned on and the operation switch SW is pressed for a predetermined period of time T ₃ seconds (for example, 3 seconds).
As the motor M rotates, the open / close indication lamps BL, R
L is displayed, and the operation switch S
After a predetermined time T ₄ (for example, 10 seconds) elapses after pressing W for a predetermined time T ₃ seconds, the lock state is automatically set.

Referring to the timing chart shown in FIG. 12, the operation switch SW is pressed once (a predetermined time T ₃ seconds or more to be described later), and the lock is released (FIG. 12A). In addition, the open lamp BL (FIG. 12)
(B)) is lit.

At this time, the motor M does not operate if the operation switch SW is momentarily pressed in a normal pressing manner (FIG. 12C). However, the operation switch SW Press preset fixed time _{T 3} seconds or more (FIG. 12 (d)), the motor M
Rotates forward (FIG. 12 (e)), and the drain plug 9 is closed.
At the same time, the open lamp BL is turned off (FIG. 12 (f)), and the closed lamp RL is turned on. The operations of the close proximity switch L ₁ and the open proximity switch L ₂ are the same as those in the first embodiment.

Then, after another predetermined time (predetermined time) T ₄ (for example, one minute) elapses after the operation switch SW is pressed for a predetermined time T ₃ seconds or more, the lock device 27 automatically locks. State (FIG. 12 (g)),
Even if the operation switch SW is pressed, the rotation of the motor M and the lighting operation of the open / close indication lamp become impossible.

At this time, the closing lamp RL is also turned off (FIG. 12 (h)). Unlocking (Fig. 12 (R))
Example 1 Similarly, pressing the operating switch SW fixed time _{T 3} seconds (Fig. 12 (j)) is carried out by. As a result, the closing lamp RL is turned on again (FIG. 12 (l)).

(Embodiment 4) Next, a description will be given of Embodiment 4 of a drive opening / closing control device for an automatic drainage plug according to the present invention. The overall configuration of the drive switching control device of the fourth embodiment is almost the same as that of the drive switching control device 14 of the first embodiment. However, as shown in FIG. 13B, a flip-flop FF ₅ and a relay switch RS are provided. The locking devices 27, 3
9 has a partially different configuration in an operation process based on a program by the control unit 26 shown in FIG. The operation of the drive opening / closing control device of the fourth embodiment is shown in the timing chart of FIG.

In FIGS. 13A, 13B and 14, the operation switch SW is set to a predetermined time T.
₅ (e.g., 3 seconds) press (FIG. 14 (b)), it continued pressing signal _{x 1} is input to the control unit 26, the normal signal _{y 3} from the control unit 26 by the control operation of the CPU based on the program
(Or the reverse rotation signal y ₄ ) is output to the output device operation circuit.
The forward rotation signal y ₃ (or the reverse rotation signal y ₄ ) causes the motor M
Switch SW _M is turned ON, and the motor M rotates (see FIG. 1).
4 (b)). Thus, the closing drive (or the opening drive) of the drain plug 9 is performed.

When the operation switch SW is pressed for the open / close display lamp (FIG. 14 (c)), the current open lamp of the drain plug 9 is lit (FIG. 14 (d)). Motor M
When the open / close switching is performed by the above operation, the switching operation to the closed lamp lighting display is performed (FIG. 14E). The operations of the proximity switches L ₁ and L ₂ are the same as those in the first embodiment.

[0084] Then, regardless of the depression of the operation switch SW time, (T ₅ seconds or more, regardless of the following) be the after pressing T ₆ seconds (e.g. 30 seconds) has elapsed, press the operation switch SW again If not, the light is automatically turned off at this point (FIGS. 14 (C), (F), and (C ')).
(What')).

Fifth Embodiment Next, a description will be given of a fifth embodiment of the automatic drain cock drive opening / closing control device according to the present invention. The circuit of the fifth embodiment is almost the same as that of the first embodiment. However, when the operation switch SW shown in FIG. 5 is pressed, the pressing signal is directly input to the input port. In short, the operation switch circuit and the input 37
There is only. Thus, in FIG. 4, the signal from the operation switch 28 is only pressed signal x _2. FIG. 6 is similar to the first embodiment.

The feature of the fifth embodiment is that when the operation switch is pressed a plurality of times during a short time T ₇ (here, the short time T ₇ means about 1 to 3 seconds), the locking device is operated. It is a configuration that can be locked or released. Here, the configuration can be performed in a short time T ₇ seconds to lock the locking device the push operated twice or cancel the entire operation of the drive control device for the automatic discharge valve of Example 5, the timing shown in Figure 15 This will be described using a chart.

At the start in FIG. 15, the lock device (indicated by LK in the figure) is in the locked state, and since the relay switch RS in FIG. 6 is normally open, the output device operation circuit is always in the locked state. Here, when the operation switch SW is pressed and operated, the pressing signal is input to the input port. The press signal is input at least twice in a short period of time T within ₇ seconds (Fig. 15 (b)), and counts it in the control unit 26, based on a predetermined program, the lock release signal y from the output signal ₁ is output and the lock is released (FIG. 15
(B)), and the open lamp BL is turned on (FIG. 15).
(C)).

[0088] In this state, pressing the operating switch SW again, the motor M is rotated forward after a lapse _{T 7} seconds (Fig. 15
(D)) While closing the automatic drain cock, the open lamp BL is turned off and the closed lamp RL is turned on (FIG. 15).
(What)). In this case, the operation switch SW is further set to one.
Resulting in a locked state and press within the times T ₇ seconds.

[0089] In this unlocked state, by pressing the operation switch SW (FIG. 15 (g)), the motor M is reversed after a lapse _{T 7} seconds (Fig. 15 (h)), unplugging drives the automatic discharge valve At the same time, the closing lamp RL turns off and the opening lamp B
L is lit (FIG. 15 (R)).

[0090] Then, the operation switch SW is pressed at least twice the operation in a short time T within ₇ seconds, twice the signal is input to the same input port (FIG. 15 (j)), which the control unit 26 by counting, on the basis of a predetermined program, and outputs a lock signal y ₂ from the output signal locked state (FIG. 15 (Le)), and the open lamp BL turned off (FIG. 15 (wo)). The motor M is closed proximity switch _{L 1}
Closing detection signal _{x 3} (FIG. 15 (f)) or open proximity switch _{L 2} of the open detection signal _{x 4} (FIG. 15 (Yo)) by the forward or reverse rotation is stopped.

Next, although a detailed description is omitted, the fifth embodiment
FIG. 16 shows a flowchart of the drain plug closing operation performed based on the apparatus according to FIGS. 4 and 6 of the first embodiment (the differences are as described above). The outline of the operation of the fifth embodiment according to this flowchart is as follows. The reference numerals in FIG. 16 are assigned corresponding to FIG.

[0092] When performing the press operation switch SW N times and at least in a short period of time T within ₇ seconds operation, along with the unlock, to turn on the open lamp BL, then the operation switch S
The closing operation is performed by operating the motor M by the pressing operation of W, and the closing lamp RL is turned on. And then, again and press out the operation least N times the operation switch SW in a short period of time T within ₇ seconds, performs a lock, turn off the closed lamp RL.

The embodiments of the present invention have been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications may be made within the technical scope described in the claims. It goes without saying that there are embodiments.

[0094]

As described above, the automatic drain plug drive opening / closing control device according to the present invention has the above-described configuration. It is easy to grasp, the usability of the automatic drain plug is improved, and the opening and closing of the drain plug by an inadvertent pushing operation on the operation switch can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the overall structure of a bathtub provided with a drive opening / closing control device for an automatic drainage plug according to the present invention.

FIG. 2 is a view showing an embodiment of a drive opening / closing control device for an automatic drainage plug according to the present invention. FIG. 2 is a diagram illustrating a configuration of a drain plug device of FIG. 1 in particular.

FIG. 3 is a diagram illustrating the overall configuration of a drive opening / closing control device of the automatic drainage device according to the present invention.

FIG. 4 is a diagram for explaining an entire configuration of a drive opening / closing control device, particularly an opening / closing control device of the automatic drainage device according to the first embodiment of the present invention.

FIG. 5 is a diagram illustrating a switch device of the opening / closing control device of FIG. 4;

FIG. 6 is a diagram for explaining the operation circuit of the automatic opening and closing control of the automatic drain cock according to the first embodiment of the present invention, particularly the output device operation circuit.

FIG. 7 is a timing chart showing the operation of the automatic drain cock drive opening / closing control device according to the first embodiment of the present invention.

FIG. 8 is a flowchart illustrating a closing operation of the drain cock of the control unit of the automatic drain cock drive opening / closing control device according to the first embodiment of the present invention. FIG. 3 is a diagram particularly illustrating an operation circuit of the output device.

FIG. 9 is a flowchart illustrating a drain cock opening operation of a control unit of the automatic drain cock drive opening / closing control device according to the first embodiment of the present invention.

FIG. 10 is a diagram illustrating a drive opening / closing control device for an automatic drain cock according to a second embodiment of the present invention, particularly an output device operation circuit.

FIG. 11 is a timing chart illustrating the operation of the automatic drain cock drive opening / closing control device according to the second embodiment of the present invention.

FIG. 12 is a timing chart illustrating the operation of the automatic drain cock drive opening / closing control device according to the third embodiment of the present invention.

FIG. 13 is a diagram illustrating a drive opening / closing control device for an automatic drainage plug according to a fourth embodiment of the present invention.

FIG. 14 is a timing chart showing the operation of the automatic drain cock drive opening / closing control device according to the fourth embodiment of the present invention.

FIG. 15 is a timing chart showing the operation of the automatic drain cock drive opening and closing control device according to the fifth embodiment of the present invention.

FIG. 16 is a flowchart illustrating the operation of the automatic drain cock drive opening / closing control device according to the fifth embodiment of the present invention.

FIG. 17 is a diagram illustrating a conventional example of an automatic drainage plug device.

[Explanation of symbols]

 2 bathtub 9 drain plug 11 wire 13 drive device 14 opening and closing control device 17 elevating member 18 control panel 20 water heater 21 operation unit 22 remote control 26 control unit 27, 39 lock device 28 operation switch device 30 operation switch circuit

Claims (6)

[Claims] 1. A driving device for electrically opening and closing a drain cock,
An automatic drain cock drive opening / closing control device including an opening / closing control device for controlling the driving device by operating an operation unit, wherein the opening / closing control device locks the driving device to disable operation, and is set in advance. A drive opening / closing control device for an automatic drainage plug, comprising: a lock device that releases the lock and enables the drive device to operate only when the operation unit is operated under a set time condition. 2. The lock device locks the drive device when the operation of the operation unit is not performed again even after a predetermined period of time has elapsed since the operation of the operation unit. The drive opening / closing control device for an automatic drainage plug according to claim 1, wherein: 3. The predetermined time condition includes:
3. The drive opening / closing control device for an automatic drainage plug according to claim 1, wherein the lock is released only when the operating portion is pushed a plurality of times continuously or within a short period of time or more. 4. The lock device locks the drive device only when the operation device is pressed a plurality of times continuously or within a short period of time for a predetermined time or more, and releases the lock state. The drive opening / closing control device for an automatic drainage plug according to claim 1, wherein: 5. A dedicated second operation unit for performing an operation of setting the drive device to a locked state and an unlocked state by the locking device is provided separately from the operation unit. A drive opening / closing control device for an automatic drainage plug according to claim 1, 3 or 4. 6. A drive device for electrically opening and closing the drain cock,
An open / close control device for operating the operation unit to control the drive device, and an automatic drainage drive open / close control device including an open / close display unit for displaying an open / closed state of the drainage plug, wherein the open / close control device includes: A drive opening / closing control device for an automatic drainage plug, wherein the opening / closing display section is turned on by a push operation once, and the drive device is made operable by a next push operation.