JP7680259B2 - Automatic swing door opening and closing device and door unit equipped with the same - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies. Date held: May 7, 2021 Meeting name and location: Market development business meeting Mitsui Fudosan Residential Co., Ltd. (Nihonbashi Muromachi Mitsui Tower, 3-2-1 Nihonbashi Muromachi, Chuo-ku, Tokyo) Date held: May 12, 2021 Meeting name and location: Market development online business meeting Organizer: Mitsui Fudosan Residential Co., Ltd. URL: https://teams.microsoft.com/dl/launcher/launcher.html? url=%2F_%23%2Fl%2Fmeetup-join%2F19%3Ameeting_MTEzYj kzNGItNzVjNC00NjQ5LWE5ZTAtMmMyOWRiMDhmMDRk%40thread. v2%2F0%3Fcontext%3D%257b%2522Tid%2522%253a%2522c1c05b54-78c5-453a-85fe-e378cc da1a98%2522%252c%2522Oid%2522%253a%2522489da8f2-ec86-4923-889a-fa110edf3a3c%25 22%257d%26anon%3Dtrue&type=meetup-join&deeplinkId=51bca977-8c4c-422f-b805-fa6a e0816375&directDl=true&msLaunch=true&enableMobilePage=true&suppressPrompt=true

This disclosure relates to an automatic swing door opening and closing device and a door unit equipped with the same.

Doors come in two types: sliding doors and swing doors (rotating doors). Generally, automatic doors are of the sliding type, which has a simple structure. However, there is also a demand for automatic swing doors. For example, entrance doors to buildings, such as front doors, often use swing doors, which are easier to seal. For this reason, automatic opening and closing systems for these swing doors have also been developed (for example, Patent Document 1).

Automatic doors are generally equipped with a function that automatically stops the opening and closing operation if an obstacle is detected, etc., for safety reasons. With such an automatic stop function, once the door is stopped, it often remains stopped until the user gives another command.

On the other hand, entrance doors such as front doors are required to have the characteristics of fire doors. Fire doors are required to remain closed except when necessary, such as when entering or leaving a room.

However, there was a problem in that automatic doors could not function as fire doors if they remained stopped due to their automatic stop function.

Japanese Unexamined Patent Publication No. 4-155082

The present invention was made in consideration of this background, and one of its objectives is to provide an automatic swing door opening and closing device that can return to a closed state even if opening and closing is temporarily stopped, and a door unit equipped with the same.

Means for solving the problem and effects of the invention

According to a first aspect of the present invention, there is provided an automatic swing door opening and closing device, comprising: a first unit having a door opener that is attached to a swing door that opens and closes by rotating around a rotation axis; a first power line interface that is connected to an external power source; a drive unit that receives power from the outside via the first power line interface and drives the door opener; and a first control unit that receives a door open command and drives the drive unit to operate the door opener to swing and open the door; and a first control unit that is electrically connected to the first power line interface and transmits power to the first unit via the first power line interface. A swing door automatic opening and closing device including a second unit having a switch for cutting off the power supply, a second control unit for controlling the ON/OFF of the switch, and a battery unit for driving the second control unit, and an opening and closing sensor for detecting the opening and closing of the door, the first control unit is configured to stop the opening and closing of the door when the opening and closing operation of the door is obstructed, and the second control unit is configured to operate the door opener to drive the drive unit and move the door to a closed position when the opening and closing sensor detects that the door has not been closed for a predetermined time or more. With the above configuration, an automatic stop function for automatically stopping the opening and closing operation when the opening and closing of the swing door is obstructed is realized, while automatically closing the door after a predetermined time has passed, thereby realizing automatic return of the door to the closed state.

According to the second aspect of the present invention, the second control unit detects that the door has not been closed for a predetermined time or more by the opening/closing sensor, and then turns the switch OFF to temporarily cut off the power supply to the first unit via the first power line interface, and then turns the switch ON. The first control unit detects the opening/closing position of the door when the power supply is resumed through the first power line interface, and if the door is not in the closed position, drives the drive unit to operate the door opener to move the door to the closed position. With the above configuration, it is possible to control the closing of the door by simple control of turning on/off the first power line that receives the power supply, and the closing of the door can be achieved with a simple configuration without providing a separate signal line. In particular, a function to avoid the door being in an open state can be easily added by utilizing the characteristic set to return to the door closed position, which is the initial position, when the first unit is energized.

Furthermore, according to the third aspect of the present invention, the automatic swing door opening and closing device in any of the above aspects, the door open command is a movement detection that occurs with the opening and closing of the door. With the above configuration, the user can detect the movement caused by the manual opening and closing of the door by simply pushing the door slightly, and the door can be opened and closed automatically, realizing an easy-to-use automatic opening and closing without the need for the user to operate a switch for opening and closing the door.

Furthermore, according to the fourth aspect of the present invention, the automatic swing door opening and closing device in any of the above aspects further includes an angle sensor provided on the rotation shaft of the drive unit, and the first control unit is configured to drive the drive unit to open or close the door in response to the angle change detected by the angle sensor resulting from the opening or closing of the door being the door open command. With the above configuration, the opening or closing operation of the door can be determined by detecting the rotation position of the drive unit with the angle sensor, and control such as outputting a door open command using this as a trigger becomes possible.

Furthermore, according to the fifth aspect of the present invention, the automatic swing door opening and closing device is configured in any of the above aspects so that the second control unit detects that the door thumb turn has been moved from the locked position to the unlocked position and issues the door open command to the first control unit.

Furthermore, according to the sixth aspect of the present invention, the automatic swing door opening and closing device in any of the above aspects further includes a buzzer that detects when the door has not been closed for a certain period of time or more and issues a warning sound.

Furthermore, according to the seventh aspect of the present invention, in the automatic swing door opening and closing device, in any of the above aspects, the second control unit is configured to operate a timer when it detects that the door is not closed by the opening and closing sensor, and to issue a door closing command to the first control unit to operate the drive unit to move the door to a closed position after a predetermined time has elapsed, and to stop the operation of the timer when it detects that the door is closed by the opening and closing sensor before the predetermined time has elapsed. With the above configuration, it is possible to prevent the door from being in an open state for more than a predetermined time.

Furthermore, according to the eighth aspect of the present invention, in the automatic swing door opening and closing device, in any of the above aspects, the first unit has a harness drawn from the first power line interface run inside the door and connected to an external power source via the door frame. With the above configuration, the harness of the external power source required for automatically opening and closing the door can be prevented from being exposed to the outside from the door, making it less noticeable and improving the appearance.

Furthermore, according to the ninth aspect of the present invention, the swing door automatic opening and closing device in any of the above aspects is a fire door.

Furthermore, the door unit according to the tenth aspect of the present invention includes a swing door that rotates around a pivot to open and close, a door frame to which the door is fixed so that it can rotate freely, and an automatic swing door opening and closing device according to any of the above aspects that is connected to the door and the door frame to automatically open and close the door.

1 is a schematic diagram showing a state in which a swing-type door automatic opening and closing device according to a first embodiment of the present invention is applied to a door unit. FIG. 2 is a circuit diagram of a first unit and a second unit shown in FIG. 1 . FIG. 4 is a block diagram showing a configuration example of a second unit. FIG. 4 is a perspective view showing how a harness is routed from a first unit to a door and a door frame. FIG. 6 is a circuit diagram of a first unit and a second unit of a swing door automatic opening and closing device according to a second embodiment of the present invention. FIG. 11 is a perspective view showing a swing door automatic opening and closing device according to a modified example.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as necessary. However, the embodiment shown below is an example for embodying the technical idea of the present invention, and the present invention is not limited to the following. In addition, this specification never specifies the members shown in the claims to the members of the embodiment. In particular, the dimensions, materials, shapes, and relative arrangements of the components described in the embodiment are not intended to limit the scope of the present invention to those, and are merely explanatory examples, unless otherwise specified. Note that the size and positional relationship of the components shown in each drawing may be exaggerated to clarify the explanation. Furthermore, in the following explanation, the same name and symbol indicate the same or similar components, and detailed explanations will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured as a form in which multiple elements are composed of the same member, and one member serves multiple elements, or conversely, the function of one member can be shared and realized by multiple members. In addition, the contents described in some examples and embodiments may be applicable to other examples, embodiments, etc.
[Embodiment 1]

The swing-type door automatic opening and closing device can be applied to a door unit in which a swing-type door is provided in a door frame. The swing-type door automatic opening and closing device 100 according to the first embodiment of the present invention is applied to a door unit 1000 in the schematic diagram of FIG. 1. FIG. 2 shows a circuit diagram of the first unit 10 and the second unit 20 shown in FIG. 1. The door unit 1000 shown in these figures includes a door 1 and a door frame 2. The door 1 is attached to the door frame 2 via a hinge 3 so as to swing around a pivot to open and close. A door opener 13 is provided on the upper part of the door 1. The door opener 13 is provided in the first unit 10. The first unit 10 has a box-shaped housing 14. The first unit 10 automatically operates the door opener 13 to automatically open and close the door 1 in a swing manner. The first unit 10 is also connected to the second unit 20. On the other hand, the second unit 20 is connected to an opening and closing sensor 30 that detects the open state of the door 1. The second unit 20 detects that the door 1 is open through the open/close sensor 30, and instructs the first unit 10 to close the door 1. This will be described in detail below.
(First unit 10)

As shown in FIG. 2, the first unit 10 includes a first power line interface 15, a drive unit 12, and a first control unit 11. The first power line interface 15 is an interface for connecting to an external power source, such as a power supply unit 40, to receive power supply. Here, the first power line interface 15 is composed of a connector that is connected to a power line 16.

The drive unit 12 receives power from the outside via the first power line interface 15 and drives the door opener 13. This drive unit 12 is composed of a motor.

When the first control unit 11 receives a door open command, it drives the drive unit 12 to operate the door opener 13 and rotate the door 1 to open it. This first control unit 11 is composed of a microcomputer, ASIC, FPGA, CPU, etc.

The door open command is, for example, a movement detection that occurs with the opening and closing of the door 1. With this configuration, the user can detect the movement of the door 1 due to manual opening and closing by simply pushing the door 1 slightly, and automatically open and close the door 1. This realizes easy-to-use automatic opening and closing without the need for the user to operate a switch for opening and closing the door. For this reason, a door movement detection unit 17 that detects the movement of the door 1 is provided. The door movement detection unit 17 can be composed of, for example, an angle sensor or a rotary encoder provided on the rotating shaft of the drive unit 12 or the rotating shaft of the door opener 13. The door movement detection unit 17 detects the rotation direction and angle change that occurs with the opening and closing of the door 1, and issues a door open command to the first control unit 11. In response to this, the first control unit 11 drives the drive unit 12 to drive the door opener 13 and open and close the door 1. For example, when the door movement detection unit 17 detects the operation of pushing the door 1 to open the door, it drives the drive unit 12 in a direction that moves the door 1 to the open position. Conversely, when the door movement detection unit 17 detects the action of pulling the door 1 to close it, it drives the drive unit 12 in a direction that moves the door 1 to the closed position. In this way, by detecting the rotation direction of the drive unit 12 with the door movement detection unit 17, it is possible to determine whether the door 1 is being opened or closed, and this can be used as a trigger to control the output of a door open command, etc.

The door open command may also be configured to receive commands from the user to open or close the door at any time via a remote control, open/close switch, etc. In this case, separate buttons for opening and closing the door may be provided on a portable remote control or a stationary console. Alternatively, a toggle button may be used to alternately open and close the door. Furthermore, the door may be configured to automatically open when the door is unlocked. For example, the door open command may be detected when the thumb turn is rotated or moved to the unlocked position, and a door open command may be issued to the first control unit via wired or wireless connection.

Also, a buzzer may be provided that detects that the door has not been closed for a certain period of time and issues a warning sound. This notifies the user by voice that the door is not closed, improving safety and reliability in terms of crime prevention, etc. Also, in addition to or in addition to the buzzer, a lamp may be turned on or a voice guidance function (such as an announcement that "the door is open") may be provided.
(Second unit 20)

On the other hand, the second unit 20 includes an output terminal 25, an input terminal 26, a switch 22, a second control unit 21, a battery unit 23, and a housing 24 that houses these. The housing 24 is a rectangular box and is placed near the door 1. The housing 24 is preferably made of a lightweight material with excellent insulating properties, such as resin. The output terminal 25 is connected to the first power line interface 15, and the input terminal 26 is connected to the power supply unit 40. In this example, the power supply unit 40 is a voltage converter that converts commercial AC power to direct current, and is preferably an adapter that converts AC 100V to DC 12V. If the second unit 20 or the first unit 10 is configured to be directly driven by commercial AC power, a power supply unit that performs such voltage conversion can be eliminated.

A switch 22 is provided between the output terminal 25 and the input terminal 26. The switch 22 cuts off the power supply to the first unit 10 via the first power line interface 15. A relay or a semiconductor switch can be suitably used as the switch 22.

The second control unit 21 controls the ON/OFF of the switch 22 in response to a signal from the open/close sensor 30. The second control unit 21 is also composed of a microcomputer, ASIC, FPGA, CPU, etc.

The battery unit 23 drives the second control unit 21. In this way, by driving the second unit 20 with the battery unit 23, the second unit 20 can be operated even if the commercial power source AC is cut off. In this example, a voltage detection line 27 is provided to detect the voltage of the power source line 16 in order to monitor the power supply from the commercial power source AC. The second unit 20 monitors the voltage of the power source line 16 via the voltage detection line 27, and controls the battery unit 23 to switch to drive when the voltage falls below a predetermined voltage.

The battery section 23 can use a primary battery or a rechargeable secondary battery. The battery section 23 can also be equipped with a voltage conversion circuit that boosts or lowers the voltage of the secondary battery to a predetermined voltage, or a voltage stabilization circuit. This can reduce the number of secondary batteries and ensure stable operation. Furthermore, a charging circuit that charges the secondary battery can be provided in the second unit 20 to charge the secondary battery during normal operation. This can eliminate the need to periodically replace the secondary battery or other components of the battery section 23. In this example, the power supply section 40 is interposed between the second unit 20 and the commercial power source AC to perform voltage conversion, but a voltage conversion circuit may be provided on the second unit side. In this case, the power supply section 40 can be eliminated.
(Open/Close Sensor 30)

The opening/closing sensor 30 for detecting the opening/closing of the door 1 on the second control unit 21 side can be any known component capable of detecting the opening/closing of the door 1, such as a magnetic sensor or a microswitch. In this example, as shown in Figs. 1 and 2, magnetic sensors are disposed on the door 1 and the door frame 2 as the opening/closing sensor 30, and the magnetic flux density is set to a maximum when the door 1 is in the closed position, and whether the door 1 is in the closed position or the open position is determined by the change in magnetic flux density. In the example of Fig. 2, the opening/closing sensor 30 is disposed on the upper frame of the door frame 2. However, the position where the opening/closing sensor 30 is disposed is not limited to the upper frame, and it may be disposed on the vertical frame or the lower frame.

Furthermore, since it is sufficient for the second unit 20 to determine whether the door 1 is closed or not, it is sufficient for the opening/closing sensor 30 to determine whether the door 1 is in the closed position or not. In other words, it is not necessary to know the opening angle of the door. However, it goes without saying that a sensor capable of detecting the opening angle of the door can be used as the opening/closing sensor 30. For example, an angle sensor or rotary encoder provided on the pivot axis of the door or the rotation axis of the door opener 13 may be used as the opening/closing sensor 30. In particular, if an angle sensor or rotary encoder is provided on the first unit 10 to determine whether the door 1 is in the closed position or not, this angle sensor can also be used in combination with the opening/closing sensor 30 on the second unit 20 side to determine whether the door 1 is open or closed.

The opening/closing sensor 30 notifies the second control unit 21 that the door 1 is not in the closed position. For this reason, the opening/closing sensor 30 is connected to the second unit 20 as shown in FIG. 2. The opening/closing sensor 30 and the second unit 20 may be connected wirelessly in addition to being connected by wire. For example, communication may be performed using a standardized wireless communication protocol such as WiFi, Bluetooth, or ZigBee (all of which are names of products or services).

In this example, the first control unit 11 is configured to stop the opening and closing of the door 1 when the opening and closing operation of the door 1 is obstructed. Therefore, the door 1 is left in an unblocked state, in other words, in an open state, which is undesirable from the viewpoint of crime prevention when used as a front door, for example. In particular, when used as a fire door, it is not suitable because it is fundamental that the door is always closed. Therefore, instead of the first control unit 11, the second control unit 21 issues a command to close the door 1. Specifically, the second control unit 21 constantly monitors whether the door 1 is open for a predetermined time or more using the opening and closing sensor 30. Then, when the second control unit 21 detects that the door 1 is not closed for a predetermined time or more, it instructs the first control unit 11 to close the door 1. In response to this, the first control unit 11 drives the drive unit 12 to operate the door opener 13 to move the door 1 to the closed position. This configuration allows for an automatic stop function that automatically stops the opening and closing operation of the swing door if the opening or closing of the door is obstructed, while also allowing the door to automatically return to a closed state by automatically closing the door after a specified time has elapsed.

As an example, the first unit 10 can use an operation of returning the position of the door 1 to the initial position, i.e., the closed position, when the power is turned on. When the power supply to the first unit 10 is once cut off and then turned on again, this initial operation is executed, and as a result, the door 1 can be closed. That is, the operation of forcibly closing the door 1 can be realized by resetting or restarting. Here, a switch 22 is interposed in the power line 16 to the first unit 10, and the second control unit 21 controls the ON/OFF of the switch 22. That is, when the second control unit 21 detects that the door 1 has not been closed for a predetermined time or more using the opening/closing sensor 30, it turns off the switch 22 to temporarily cut off the power supply to the first unit 10 via the first power line interface 15. Then, by turning on the switch 22 again, the first control unit 11 detects the opening/closing position of the door 1 at the timing when the power supply is resumed through the first power line interface 15, and if the door 1 is not in the initial position, which is the closed position, it can drive the drive unit 12 to operate the door opener 13 to move the door 1 to the closed position. In this way, the closing of door 1 can be controlled by simply turning on/off the first power supply line that receives the power supply, and the closing of door 1 can be achieved with a simple configuration without providing a separate signal line. In particular, by utilizing the characteristic set to return to the initial door closed position when the first unit 10 is energized, a function can be easily added to prevent the door 1 from being left in an open state.

A timer may also be provided to regulate the door open time. For example, when the second control unit 21 detects that the door is not closed by the opening/closing sensor 30, it operates the timer, and after a predetermined time has elapsed, it issues a door closing command to the first control unit 11 to operate the drive unit 12 to move the door to the closed position. On the other hand, if it detects that the door is closed by the opening/closing sensor 30 before the predetermined time has elapsed, it stops the operation of the timer. This makes it possible to prevent the door from being left open for a predetermined time or longer. The timer time may be a default value or may be adjustable by the user. For example, the automatic blocking function can be made variable within a predetermined range, such as operating in a range of 15 to 60 seconds.

Furthermore, by providing the second unit 20 with a battery unit 23, even if a power outage occurs when the door is in the open position, the second unit 20 can be operated by the battery unit 23. That is, just like when electricity is applied, it can detect that the door is not in the closed position after a predetermined time has elapsed, and supply driving power from the battery unit 23 to the first unit 10 to drive the drive unit 12 and move it to the closed position. In other words, a fire door that can be maintained in the closed state is realized, even if a power outage occurs due to a disaster or the like while the door is being opened or closed.

Figure 3 shows a detailed block diagram of the second unit 20. The second unit 20 shown in this figure is connected in series between the power supply unit 40 and the first unit 10. As described above, the power supply unit 40 is an adapter that converts commercial power supply AC 100V to DC 12V, and supplies power to the second unit 20 and, via the second unit 20, to the first unit 10. In addition, an opening/closing sensor 30 for detecting whether the door 1 is open or closed is connected to the second unit 20. A magnetic switch or the like can be suitably used as the opening/closing sensor 30.

The second unit 20 includes an output terminal 25, an input terminal 26, a voltage detection line 27, a charge/discharge circuit 41, a first rectifier element 28A, a second rectifier element 29A, a constant voltage circuit 42, a switch 22, a second control unit 21, a battery unit 23, and a housing 24.

The input terminal 26 is connected to the power supply line 16. The voltage detection line 27 is connected to the power supply line 16A, which has the same potential as the power supply line 16, and detects a state (abnormality) in which power has been lost due to a power outage or the like. For example, the voltage detection line 27 monitors the voltage of the power supply line 16 (i.e., the power supply line 16A), and when a drop in voltage is detected, the second control unit 21 determines that an abnormality has occurred and switches to drive using the battery unit 23, continuing to supply power to the first unit 10 and driving the door 1 to move to the closed position.

The power supply line 16A connected to the power supply line 16 via the input terminal 26 is branched into a first power supply line 28 and a second power supply line 29. The first power supply line 28 is a normal power supply line for supplying power from the commercial power source AC to the second unit 20 and the first unit 10 during normal times when there is no power outage or the like. On the other hand, the second power supply line 29 is an emergency power supply line for continuing the power supply from the battery unit 23 during an abnormality such as a power outage. The first power supply line 28 and the second power supply line 29 are provided with a first rectifying element 28A and a second rectifying element 29A, respectively. A semiconductor rectifying element such as a diode can be used as the first rectifying element 28A and the second rectifying element 29A.
(Charge/discharge circuit 41)

A charge/discharge circuit 41 is further provided on the second power supply line 29. The charge/discharge circuit 41 is connected to the battery unit 23, and controls charging and discharging of the battery unit 23 by the charge/discharge circuit 41. In the example of FIG. 3, the charge/discharge circuit 41 is provided between the second power supply line 29 and the battery unit 23, but the charge/discharge circuit may be provided at another position. The charge/discharge circuit 41 charges the battery unit 23 under normal circumstances and maintains it in a fully charged state. For this reason, the charge/discharge circuit 41 includes a constant current charging circuit that charges the secondary battery cells constituting the battery unit 23 with a constant current, and a constant voltage charging circuit that charges them with a constant voltage. In addition, the charge/discharge circuit 41 discharges the battery unit 23 during an abnormality such as a power outage, and supplies driving power to the second unit 20 and the first unit 10. For this reason, the charge/discharge circuit 41 is controlled by switching between a charge switch that is turned on during charging and a discharge switch that is turned on during discharging. Such a charge switch and a discharge switch can be made of a semiconductor switching element such as a MOSFET. Furthermore, the second control unit 21 controls the operation of the charge/discharge circuit 41 to charge and discharge the battery unit 23 by switching the charge switch and discharge switch ON/OFF.
(Constant voltage circuit 42)

Furthermore, a constant voltage circuit 42 is provided on the discharge path of the battery unit 23 so that the second unit 20 and the first unit 10 can be driven by the battery unit 23. In the example of FIG. 3, the constant voltage circuit 42 is provided between the second rectifier element 29A and the switch 22 on the power supply line 16A. The constant voltage circuit 42 is a member that converts the output voltage of the battery unit 23 into a voltage that can drive the second unit 20 and the like, and can use a DC stabilized power source such as a DC/DC converter. Here, the constant voltage circuit 42 is configured with a boost chopper circuit using a boost switching regulator, and 9.6 V, which is obtained by connecting eight nickel-hydrogen batteries of 1.2 V/cell that constitute the battery unit 23 in series, is boosted to 12 V. This makes it possible to reduce the number of secondary battery cells that constitute the battery unit 23 and simplify the circuit, while still being able to supply the necessary drive power. Note that, during normal operation, the discharge switch is turned OFF, discharging of the battery unit 23 is not performed, and the operation of the constant voltage circuit 42 is also stopped.

The charge/discharge circuit 41 and the constant voltage circuit 42 are controlled by the second control unit 21. The second control unit 21 monitors the power supply voltage via the voltage detection line 27. Normally, that is, while it is confirmed that the necessary power is being supplied by the voltage detection line 27, the second control unit 21 receives power from the power supply unit 40 via the first power supply line 28, monitors the opening and closing of the door 1 with the opening/closing sensor 30, and if the door 1 is in an open state for a certain period of time or more, the switch 22 is turned OFF to reset the first unit 10, and then the switch 22 is turned ON again to control the door 1 to move to the closed position, which is the initial position. On the other hand, when an abnormality such as a power outage is detected by the voltage detection line 27, the second control unit 21 switches the charge switch of the charge/discharge circuit 41 OFF and the discharge switch ON, and drives the constant voltage circuit 42 to supply power from the battery unit 23 to the second unit 20 and the first unit 10. This allows the automatic opening and closing function of door 1 to be maintained even during a power outage, and just like under normal circumstances, when it detects that door 1 has not been closed for a predetermined period of time or more, it is possible to operate switch 22 in the same way and move door 1 to a closed state. In this way, the swing door automatic opening and closing device can maintain the door's closed state even during a power outage, allowing for highly safe operation as a fire door.

Furthermore, the second control unit 21 may be configured to transmit a door opening/closing signal to the first unit 10. For example, the second control unit 21 can detect that the thumb turn has been rotated or moved to the unlocked position, and issue a door open command to the first control unit of the first unit 10. This allows the door 1 to be automatically opened or closed when the door 1 is unlocked.
(Harness storage mechanism)

Furthermore, the harness 18 for connecting the first unit 10, the second unit 20, and the power supply unit 40 may be exposed from the door 1 or may be built into the door 1 or the door frame 2. For example, in the example shown in Fig. 4, the first unit 10 has the harness 18 drawn from the first power supply line interface 15 routed inside the door 1 and connected to an external power supply via the door frame 2. With this configuration, the harness 18 of the external power supply required for automatically opening and closing the door 1 can be prevented from being exposed to the outside from the door 1, and can be made less noticeable, improving the appearance.
[Embodiment 2]

In the above embodiment, an example has been described in which the second unit 20 is provided outside the door 1 as a separate unit from the first unit 10. The second unit 20 is disposed in a location that does not get in the way, such as near the door frame 2. However, the present invention is not limited to this configuration, and the second unit may be provided integrally with the first unit. Such an example is shown in FIG. 5 as an automatic swing door opening/closing device 200 according to embodiment 2. In this figure, the same components as those in FIG. 2 and the like are given the same reference numerals and detailed description is omitted. In this automatic swing door opening/closing device 200, the first power line interface 15, the drive unit 12, the first control unit 11, the second control unit 21, the switch 22, and the battery unit 23 are incorporated in a common housing 34. With this configuration, it is possible to eliminate the need to secure space for disposing separate components outside the door, and the advantage of a neater appearance is obtained.

In the above example, the first unit 10 including the drive unit 12 is fixed to the door side, but the present invention is not limited to this configuration, and it goes without saying that the first unit 10 may be fixed to the door frame 2 side as shown in FIG. 6.

The swing door automatic opening and closing device and the door unit equipped with the same according to the present disclosure can be suitably used as an automatic opening and closing mechanism for entrance doors or interior doors of apartments or houses.

1000...door unit 100, 200...swing door automatic opening and closing device 1...door 2...door frame 3...hinge 10...first unit 11...first control unit 12...drive unit 13...door opener 14...housing 15...first power line interface 16...power line; 16A...power supply line 17...door movement detection unit 18...harness 20...second unit 21...second control unit 22...switch 23...battery unit 24...housing 25...output terminal 26...input terminal 27...voltage detection line 28...first power supply line 28A...first rectifier element 29...second power supply line 29A...second rectifier element 30...opening and closing sensor 34...housing 40...power supply unit 41...charge and discharge circuit 42...constant voltage circuit AC...commercial power supply

Claims (10)

A door opener that is attached to a swing door that opens and closes by rotating around a rotation axis;
A first power line interface for connecting with an external power source;
a driving unit that receives power from an external source via the first power line interface and drives the door opening/closing device;
a first control unit that receives a door open command, drives the drive unit to operate the door opener, and rotates and opens the door;
A first unit having
a switch electrically connected to the first power line interface for cutting off power supply to the first unit via the first power line interface;
A second control unit that controls ON/OFF of the switch;
A battery unit that drives the second control unit;
and a second unit having
an opening/closing sensor that detects whether a door is opened or closed;
A swing door automatic opening and closing device comprising:
The first control unit is configured to stop opening and closing of the door when an opening or closing operation of the door is obstructed,
The second control unit is configured to, when it detects by the opening/closing sensor that the door has not been closed for a predetermined period of time or more, drive the drive unit to the first control unit to operate the door opener so as to move the door to a closed position. The automatic swing door opening and closing device according to claim 1,
when the second control unit detects by the opening/closing sensor that the door has not been closed for a predetermined time or longer, the second control unit turns off the switch to temporarily cut off the power supply to the first unit via the first power line interface, and then turns on the switch;
The first control unit detects the open/close position of the door when power supply is resumed through the first power line interface, and if the door is not in the closed position, drives the drive unit to operate the door opener to move the door to the closed position. The automatic swing door opening and closing device according to claim 1 or 2,
The swing door automatic opening and closing device, wherein the door open command is detection of movement that occurs as the door is opened or closed. The swing door automatic opening and closing device according to any one of claims 1 to 3, further comprising:
An angle sensor is provided on a rotation shaft of the drive unit,
The first control unit is configured to drive the drive unit to open or close the door in response to the angle change detected by the angle sensor due to the opening or closing of the door as a door open command. The swing door automatic opening and closing device according to any one of claims 1 to 4,
The second control unit detects that the door thumb turn has been moved from the locked position to the unlocked position and issues the door open command to the first control unit. The swing door automatic opening and closing device according to any one of claims 1 to 5, further comprising:
This swing door automatic opening and closing device is provided with a buzzer which detects that the door is not closed for a certain period of time or more and issues a warning sound. The swing door automatic opening and closing device according to any one of claims 1 to 6,
When the second control unit detects that the door is not closed by the opening/closing sensor, the second control unit operates a timer,
After a predetermined time has elapsed, a door closing command is issued to the first control unit to operate the drive unit so as to move the door to a closing position;
The device for automatically opening and closing a swing-type door is configured so that, when the opening/closing sensor detects that the door is closed before a predetermined time has elapsed, the operation of the timer is stopped. The swing door automatic opening and closing device according to any one of claims 1 to 7,
The first unit is a swing-type door automatic opening and closing device in which a harness drawn from the first power line interface is routed inside the door and connected to an external power source via the door frame. The swing door automatic opening and closing device according to any one of claims 1 to 8,
The swing door automatic opening and closing device, wherein the swing door is a fire door. A swing door that rotates around a pivot to open and close;
a door frame to which the door is rotatably fixed;
A door unit comprising the automatic swing door opening and closing device according to any one of claims 1 to 9, which is connected to the door and a door frame to automatically open and close the door.

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