JP4224392B2 - Automatic door device for toilet - Google Patents

Description

  The present invention relates to an automatic door device for a toilet installed in a public toilet such as a hospital or a station building, or a toilet in a facility such as a shopping center, and more specifically, an automatic installed in a toilet exclusively for handicapped persons or accessible to anyone. The present invention relates to a lock mechanism in a door device.

A general configuration of a conventional automatic door device for a toilet includes a door disposed at a front of a toilet, an outer operation unit provided outside the toilet, and an inner operation unit provided inside the toilet. The drive means for opening and closing the door via the controller based on the open signal and the close signal from the inside / outside operation unit, and a lock mechanism (electric lock) for prohibiting the opening operation when the door is fully closed. is there.
The outer operation section has an outer opening switch and an outer closing switch. When the outer opening switch is operated, the door is opened by the opening signal, and when the outer closing switch is operated, the door is closed by the closing signal. Similarly, the inner operation section has an inner opening switch and an inner closing switch, and is set so that the door is opened by the operation of the inner opening switch and the door is closed by the operation of the inner closing switch.
The locking mechanism automatically locks the door when the door is closed by operating an inner closing switch, and is automatically unlocked when the door is opened by operating an inner opening switch. is there.

Patent Document 1 and Patent Document 2 are intended to solve the problems of the above-described conventional devices. However, both of the above-described general configurations, in particular, an electric lock as a lock mechanism that prohibits an opening operation when the door is fully closed. The use is the same as in the conventional apparatus.
This electric lock is attached to a plunger that can be moved by a solenoid via an actuating member so that the lock pin can be moved in and out, and is locked when the pin protrudes and engages with the pin holder. When the lock pin is detached from the pin holder. It is a structure that can be unlocked. Such an electric lock has an advantage that the user can feel secure by ensuring the fully closed state of the door because the lock pin is fitted and locked to the pin receiver at the time of locking.
However, the electric lock has many components and is expensive, and requires a lot of work when installing the automatic door, which increases the cost of the automatic door device for toilets. There was a problem that caused the user to feel uncomfortable with the sound (locking sound).

JP 7-293110 A JP 2001-241263 A

  In order to solve the conventional problems in view of the above circumstances, the present invention secures an equivalent function without using an electric lock as a lock mechanism, thereby reducing noise and suppressing the cost of the apparatus. An automatic door device for toilets is provided at a low cost.

Such an automatic door device for a toilet according to the present invention is an automatic door device for a toilet in which the door is freely opened and closed at the front of the toilet, and the door is opened and closed by driving a motor controlled by a controller. Is provided with a motor drive unit that, when the door is manually opened from the fully closed state, causes the motor to close and rotate with a large torque to force the door to close in the closing direction. (Claim 1).
Thereby, in the fully closed state of the door while the toilet is in use, when the door is manually opened from the outside, the strong pushing action of the motor acts, so that the door can be prevented from opening due to the manual opening operation, Electric lock equipment can be eliminated.

The automatic door device for toilets of the present invention also proposes that the door is opened by a manual opening operation in an emergency or emergency.
As the means, the strong pushing operation is continued for the time set by the timer, and when the set time elapses, the motor is closed and rotated with a small torque, and then the door is returned to the fully closed state. (Claim 2).
The operation of rotating the motor on the closing side with a small torque is a primary pushing operation for closing the door, and the secondary pushing operation is followed by the door being fully closed. The secondary pushing operation in the fully closed state gives the closing side rotational force with a torque that is lighter than the primary pushing operation of the motor (to the extent that no gap is generated between the door and the abutting surface).
Therefore, by continuing the manual opening operation until the set time of the timer elapses, the door can be manually opened when the primary pushing operation is performed immediately after the set time has elapsed.

Further, as another means, the strong pushing operation is continued for a time set by a timer, and when the set time elapses, the torque of the motor is temporarily made zero (claim). 2).
According to this, by continuing the manual opening operation until the set time of the timer elapses, the torque of the motor is not connected when the set time elapses, so that the door can be opened with a light manual force.

According to the present invention, it is possible to eliminate the need for an electric lock, which has been conventionally required as a lock mechanism, so that there is no unpleasant lock sound generated when the electric lock is locked, and noise reduction can be achieved, and an increase in the cost of the apparatus is suppressed. Thus, an automatic door device for a toilet can be provided at a low cost.
Further, according to claim 2 or 3, it is possible to open the door manually in case of an emergency or emergency such as a user getting sick in the toilet, and a quick response in case of emergency or emergency. In addition, if the emergency / emergency key switch, wiring, etc. can be omitted, the cost can be further suppressed.

An embodiment of the automatic door device of the present invention will be described with reference to the drawings. Since this type of automatic door device for toilets is generally popular, an example thereof will be described with reference to FIGS. 1 and 2.
The toilet 1 has a sliding door-type door 2 that can be freely opened and closed in the front door 1a, and a controller 3 and a driving means 4 are provided inside the door, and a push-button type outside opening switch 5a and an outside are provided outside the room. An outer operation unit 5 including a closing switch 5b and an in-use lamp 5c is attached, and an inner operation unit 6 including a push button type inner opening switch 6a and an inner closing switch 6b is attached to the indoor side. Further, an auxiliary light sensor 7 including a light projecting unit 7a and a light receiving unit 7b constituting a photoelectric sensor is attached to the front door 1a of the toilet 1 as one means of safety measures.

The driving means 4 includes a driving motor 4a such as a brushless DC motor, a speed reducer 4b linked to the motor 4a, and a transmission mechanism for opening and closing power such as a timing belt wound around a pulley that rotates via the speed reducer 4b. 4c, the upper end of the door 2 is suspended from the transmission mechanism 4c, and the door 2 is opened and closed by driving the motor 4a.
A toilet 1b and a wash basin 1c are installed in the toilet 1, and further, although not shown, a room lamp, a ventilation fan, and the like are appropriately provided.

When the open signal or the close signal is transmitted by the operation of the outer operation unit 5 or the inner operation unit 6, the automatic door device controls the motor 4a of the driving means 4 by the controller 3 to open the door 2. Open and close operation is performed.
Specifically, the controller 3 includes a control unit 3a that controls the operation of the entire apparatus, and includes a motor drive unit 3b that is a drive circuit of the motor 4a. The control unit 3a is opened from the outer operation unit 5 or the inner operation unit 6. When a signal or a close signal is received, the motor 4a is started and stopped via the motor drive unit 3b.
The controller 3 further includes a forgetting to close timer 3c, a long time timer 3d, and the like. When the opened door 2 is left for a relatively short time (for example, 30 seconds) by the forgetting to close timer 3c, the controller 3a The door 2 is closed by sending a close signal to the motor drive unit 3b, and the door 2 remains closed by the operation of the inner close switch 6b by the long-time timer 3d (the inside of the toilet 1 is in use). When the operation is continued for a long time (for example, 20 to 30 minutes), the control unit 3a transmits an open signal to open the door 2.
It is also possible to provide an in-use lamp in the inner operation unit 6.

A general door opening / closing operation in the automatic door device will be described. In the fully closed state of the door 2 in which the user does not enter the toilet 1 (hereinafter referred to as the fully closed initial state), the user When the open switch 5a is pushed, the door 2 is opened by the motor 4a, and the forgetting to close timer 3c is started by the opening of the door 2.
When the user who has entered the toilet 1 presses the inner closing switch 6b, the forgetting closing timer 3c is stopped, the in-use lamp 5c of the outer operation section 5 is lit, the outer opening switch 5a is disabled, and the timer 3d starts and door 2 closes. In this state, the in-use lamp 5c is lit and it is confirmed from the outside that the toilet is in use, and the door 2 is not fully open due to the invalidity of the outside opening switch 5a (hereinafter referred to as "all closed"). Closed use state).
When the user is left without entering the room with the door 2 open, the door 2 is sounded after the buzzer sounds for a predetermined time (for example, 5 seconds) when the set time of the forgetting to close timer 3c has elapsed. Closes and ends, that is, returns to the fully closed initial state.

Next, when the user leaves the toilet 1, the door 2 is opened by pressing the inner opening switch 6a, the in-use lamp 5c is turned off, the outer opening switch 5a is returned to the effective state, and a long time timer is set. Stops and the forgetting to close timer 3c starts.
Thereafter, when the exiting user presses the outer closing switch 5b, the door 2 is closed and the forgetting closing timer 3c is stopped to return to the fully closed initial state.
When the user who has left the toilet 1 does not press the outer closing switch 5b, the door 2 is closed after the set time of the forgetting closing timer 3c has elapsed and the buzzer sounds for a predetermined time, and the fully closed initial state. Return to.

  Further, when a long time passes for some reason while the user is in the toilet 1, the in-use lamp 5c of the outer operation unit 5 blinks when the set time of the long time timer 3d elapses. Thus, the abnormality in the toilet 1 is notified to the outside, and the outer opening switch 5a is effectively restored. When the state has elapsed for a predetermined time (for example, 55 seconds), the in-use lamp 5c is turned off and the door 2 is opened after the buzzer sounds for the predetermined time.

Thus, the motor drive unit 3b of the controller 3 controls the motor 4a that opens and closes the door 2 based on a command from the control unit 3a. When the manual opening operation is performed from the fully closed use state, the motor 4a is closed and rotated with a large torque so that the door 2 is strongly pushed in the closing direction.
The strong pressing operation will be described with reference to the flowchart of FIG.
In the fully closed use state of the door 2, in order to eliminate the gap between the door 2 and the abutting surface, a secondary pushing operation is being performed in which a slight torque closing side rotational force is applied to the motor 4 a (ST 1). When the opening operation is manually performed, the opening rotation of the motor is measured by a pulse counter, and the state where the door 2 is opened by a small amount (for example, about 10 mm; count 2 or more) is detected by the counter (ST2). The control unit 3a receives the detection signal of the counter, applies a voltage to the motor 4a via the motor drive unit 3b, and manually pushes the door 2 in a closing direction so as to prevent the door 2 from further opening, thereby causing a strong pushing operation ( ST3).

Accordingly, it is possible to recognize that the door 2 cannot be opened from the outside, that is, the locked state. When the manual opening operation is stopped and the hand is released from the door 2, the door 2 closes at a low speed and returns to the fully closed use state, but the strong pushing operation continues for the time set by the timer (ST4).
The set time of the timer is a time necessary for recognizing that the door 2 cannot be opened, for example, a time selected from 10 seconds to 20 seconds, and further 1 minute to 2 minutes to prevent mischief. However, when considering an emergency or emergency manual opening operation, approximately 20 to 30 seconds is preferable. The timer setting time can be changed variably.

The strong pressing operation is stopped after the set time of the timer has elapsed in ST4 (ST5), and then the closing operation (primary pressing operation) is performed for a short time (ST6), and the state returns to the fully closed use state (ST6). ST7, ST1).
Therefore, if it is within a limited time during the return from ST5 to ST1, more specifically, by continuing the manual opening operation until immediately after stopping the strong pushing operation (ST5), or immediately after the set time has elapsed. When the door 2 is manually opened in a short time (ST6), the door 2 can be opened by hand because the rotational torque of the motor 4a is small.
As a result, even when the user is in a bad condition in the toilet 1 or when the timer 3d or the inward opening switch 6a fails for a long time, even in an emergency or emergency, even in the fully closed use state The door 2 can be opened from the outside by a manual opening operation.
When the door 2 is manually opened, the door 2 is held open without passing through ST6 and ST7, and thereafter, the door 2 is closed by operating the outer closing switch 5b to return to the fully closed initial state. Or may be closed by operating the inner close switch 6b to return to the fully closed use state.

As shown in FIG. 4 as manual opening means after the strong pushing operation is stopped, the torque of the motor 4a may be made zero immediately after the strong pushing operation is stopped (ST5) (ST10). Thereby, since the door 2 becomes a free state, the door 2 can be opened with a light manual force.
The time in ST10 is the minimum necessary to prevent an erroneous operation from the outside. After the set time elapses without a manual opening operation, the motor 4a is started (ST11) to close the door 2. Return to the fully closed use state (ST6, ST7, ST1). In ST10, it is preferable that the means for reducing the torque of the motor 4a to reduce the torque stepwise in order to avoid a sudden opening of the door 2.
Note that ST10 and ST11 are preferably operated only when a manual opening operation is detected and continued until the set time of the timer elapses, thereby further effectively preventing an erroneous operation from the outside. Can do.

In the above embodiment, the door 2 is in the fully closed state, and the fully closed use state in which the user is in the toilet 1, in other words, the inner close switch 6 b is pushed and the outer open switch 5 a is disabled. However, the present invention is also applicable to a fully closed initial state in which there is no user in the toilet 1.
Moreover, although the outer side operation part 5 and the inner side operation part 6 demonstrated the pushbutton type switch, it is not limited to it but it is also arbitrary to use a non-contact-type sensor, and the outer side operation part 5 Includes an infrared sensor for detecting that the user has stood in front of the door 2, a mat switch, or the like.

  Further, in claim 1 of the present invention, manual opening means is not essential in an emergency or emergency, and the strong push operation of the motor is canceled using an emergency / emergency key switch, or the motor is operated. It is optional to provide means for stopping.

It is an outline top view of a toilet provided with the automatic door device for toilets of the present invention. It is a block diagram which shows the principal part of the automatic door apparatus for toilets of this invention. It is a flowchart explaining the strong pushing operation | movement of the controller of this invention. It is a flowchart explaining other embodiment of the said strong pushing operation | movement.

Explanation of symbols

1: Toilet 1a: Frontage 2: Door 3: Controller 3b: Motor drive unit 4: Drive means 4a: Motor

Claims (3)

  In the automatic door device for toilets, which opens and closes the door by opening and closing the door at the front of the toilet and is driven by a motor controlled by a controller, the controller is configured to manually open the door from a fully closed state. An automatic door device for a toilet, comprising: a motor driving unit that causes the motor to close and rotate with a large torque to perform a strong pushing operation in the closing direction.   The powerful pushing operation is continued for a time set by a timer, and when the set time has elapsed, the motor is closed and rotated with a small torque, and then the door is returned to a fully closed state. The automatic door device for toilets according to claim 1.   2. The automatic door device for a toilet according to claim 1, wherein the strong pushing operation is continued for a time set by a timer, and the torque of the motor is temporarily made zero when the set time elapses. .

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