JP2022091281A - Automatic sliding door opening/closing device and automatic opening/closing sliding door equipped therewith - Google Patents

Abstract

To provide an automatic sliding door opening/closing device that can easily replace an existing manually operated sliding door with an automatically operated sliding door by retrofitting, and an automatic opening/closing sliding door equipped with the device.SOLUTION: Included are: a drive unit (10) equipped with at least an electric motor (12) as a drive source, a rotating body (13) driven by the electric motor (12), and control means (17) to drive and control the electric motor (12); and an elongated member (20) supported by the drive unit (10) and moving longitudinally by rotation of the rotating body (13). The drive unit (10) is fixed to a part of a perimeter other than a sliding door (50), and one lengthwise end of the elongated member (20) or its vicinity is attached to the sliding door (50), thereby configuring the sliding door (50) to open/close as the elongated member (13) is moved forward and backward by the electric motor (12).SELECTED DRAWING: Figure 3

Description

The present invention relates to an automatic sliding door opening / closing device that can be retrofitted to an existing manual sliding door so that the sliding door can be automatically opened / closed, and an automatic opening / closing type sliding door including the same.

For example, in commercial facilities such as stores and medical facilities such as hospitals, an automatic sliding door opening / closing device that automatically opens / closes an entrance / exit by a sliding door that slides laterally is provided. This automatic sliding door opening / closing device uses an electric motor as a drive source. For example, when it detects an approach to a person's doorway, it drives the electric motor to slide the sliding door to open the doorway, and when the person moves away from the doorway by a predetermined distance. Detecting this, it drives an electric motor and slides the sliding door in the opposite direction to close the doorway. Various proposals have been made so far regarding such an automatic sliding door opening / closing device (see, for example, Patent Documents 1 to 3).

Japanese Unexamined Patent Publication No. 2016-003523 Japanese Unexamined Patent Publication No. 2020-084623 Japanese Patent No. 4569717

However, all of the conventional automatic sliding door opening / closing devices shown in Patent Documents 1 to 3 are preliminarily incorporated at the time of building construction, and are not expected to be retrofitted to the existing manual sliding door. Therefore, with these conventional techniques, it is not possible or very difficult to change the existing manual sliding door to an automatic type that can be automatically opened and closed after the fact.

In addition, in the sliding door automatic opening / closing device that can be retrofitted to the conventional manual opening / closing type sliding door, a drive unit equipped with a drive source such as an electric motor on either the sliding door or the outer frame or wall surface other than the sliding door. By attaching a long member such as a rail, a piece, or a rod driven by this drive unit to either one, the sliding door is slid by moving the long member relative to the drive unit. A structure that opens and closes is adopted. However, in the sliding door automatic opening / closing device having such a configuration, if the long member is attached at an angle with respect to the longitudinal direction (moving direction), the smooth opening / closing operation of the sliding door may be hindered. rice field. Therefore, when attaching to the sliding door, fine alignment and assembly are required to ensure the operation of the long member and the sliding door, and a laborious installation work by a professional contractor is required.

The present invention has been made in view of the above circumstances, and an object thereof is an automatic sliding door that can easily change an existing manual sliding door to an automatic one by retrofitting only with a very simple installation work. It is an object of the present invention to provide a switchgear and an automatic opening / closing sliding door equipped with the switchgear.

The present invention for achieving the above object is an automatic sliding door opening / closing device (1) for sliding a sliding door (50) to automatically open / close the entrance / exit (53), and is at least an electric motor (12) which is a drive source. ), A drive unit (10) including a rotating body (13) rotationally driven by the electric motor (12), and a control means (17) for driving and controlling the electric motor (12), and the drive unit. A long member (20) that is supported by (10) and moves back and forth in the longitudinal direction by the rotation of the rotating body (13) is provided, and the drive unit (10) is placed around a circumference other than the sliding door (50). The elongated member (12) driven by the electric motor (12) by fixing it to a part and attaching one end or the vicinity thereof in the longitudinal direction of the elongated member (20) to the sliding door (50). The sliding door (50) is configured to open and close as the 20) moves forward and backward.

According to the present invention, the drive unit is fixed to a part of the periphery other than the sliding door, and one end in the longitudinal direction of a long member supported so as to move forward and backward with respect to the drive unit or its vicinity is attached to the sliding door. As a result, when the electric motor is driven and the roller rotates, the long member that moves forward and backward due to the rotation of the roller slides together with the sliding door, so that the doorway is automatically opened and closed by the sliding door. Therefore, the sliding door automatic opening / closing device can be easily retrofitted. Therefore, the existing manual sliding door can be easily changed to the automatic one.

In particular, this automatic sliding door opening / closing device has a unitized structure in which a drive unit and a long member supported by the drive unit and move forward and backward are integrally provided, so that it is long when attached to the sliding door. Fine alignment and assembly are not required to ensure the operation of the scale member. Therefore, it is possible to ensure a smooth and reliable opening / closing operation of the sliding door after installation in the sliding door with only a very simple installation work.

Here, a bidirectional clutch (16) may be provided in the power transmission path from the electric motor (12) to the rotating body (13).

According to the above configuration, for example, when the sliding door is stopped in the middle of sliding due to a power failure, even if the sliding door is manually slid, the rotating body is only freely rotated by the long member and no load is applied to the electric motor. , The sliding door can be slid freely with almost no resistance to manually open and close the doorway.

Further, the automatic opening / closing type sliding door according to the present invention is provided with the sliding door automatic opening / closing device (1) having the above configuration according to the present invention, and the long member (20) is arranged at the upper end portion of the sliding door (50). Further, the drive unit (10) is fixed to the wall above the sliding door (50), or the elongated member (20) is arranged at the lower end of the sliding door (50), and the drive unit (10) is arranged. ) May be fixed on the floor.

According to the above configuration, the degree of freedom in the installation location of the sliding door automatic opening / closing device is increased, the sliding door automatic opening / closing device can be appropriately installed according to the structure around the existing sliding door, and the versatility is enhanced.

Further, a wireless motion sensor (30) for detecting the approach and separation of a person is provided on the entrance side and the exit side of the entrance / exit (53), respectively, and the control means (17) is one of the motion sensors ( When the 30) detects the approach of a person, the electric motor (12) is driven to slide the sliding door (50) to open the doorway (53), and then the other motion sensor (30) is the person. When the separation is detected, the electric motor (12) may be reversed and the sliding door (50) may be slid in the opposite direction to close the doorway (53).

According to the above configuration, since the motion sensor is a wireless type, the electrical wiring for connecting the control means and the motion sensor becomes unnecessary, and the structure can be simplified. When one motion sensor detects the approach of a person, an electric motor is driven to automatically open the doorway, and when a person passes through the opened doorway and moves away from the doorway by a predetermined distance, the other person The motion sensor detects this and reverses the electric motor to automatically close the doorway.

Further, a body temperature sensor (33) for detecting a person's body temperature is provided, and the control means (17) has a body temperature of a person passing through the entrance / exit (53) detected by the body temperature sensor (33) at a predetermined value or higher. In some cases, the electric motor (12) may not be driven even if the motion sensor (30) detects the approach of a person.

According to the above configuration, it is possible to deny the entry of a person whose body temperature is higher than normal heat in consideration of health damage to other people.

Alternatively, a mat sensor (36) for detecting whether or not a person has stepped on the mat laid at the doorway (53) is provided, and the control means (17) is such that the mat sensor (36) steps on the mat by a person. When it is detected, the electric motor (12) may be driven to open the doorway (53).

According to the above configuration, if the mat sensor is provided only on one of the mats laid on the entrance side or the exit side of the doorway, it is possible to allow only the entrance to the doorway or the exit from the doorway (one-way hole). ..

Further, when the seismic sensor (32) is provided and the seismic intensity detected by the seismic sensor (32) is equal to or higher than a predetermined value, the control means (17) drives the electric motor (12). The doorway (53) may be opened by sliding the sliding door (50) to maintain the state.

According to the above configuration, when a person needs to evacuate due to the occurrence of an earthquake, the doorway can be automatically opened to secure an evacuation passage.

According to the present invention, the existing manual sliding door can be easily changed to the automatic one by retrofitting the sliding door automatic opening / closing device.

It is a front view of the frontage (doorway fully closed state) in which the sliding door automatic opening / closing device which concerns on Embodiment 1 of this invention is installed. It is an enlarged detailed view of part A of FIG. It is a perspective view which shows the internal structure of the drive unit of the sliding door automatic switchgear which concerns on Embodiment 1 of this invention. It is a front view which shows the internal structure of the drive unit of the sliding door automatic switchgear which concerns on Embodiment 1 of this invention. FIG. 4 is a cross-sectional view taken along the line BB of FIG. It is a block diagram which shows the system structure of the sliding door automatic opening and closing device which concerns on Embodiment 1 of this invention. It is a front view of the frontage which shows the state which the doorway is fully opened by the sliding door automatic opening / closing device which concerns on Embodiment 1 of this invention. It is a front view which shows the internal structure of the drive unit of the sliding door automatic switchgear which concerns on Embodiment 2 of this invention. FIG. 8 is a cross-sectional view taken along the line CC of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

<Embodiment 1>
FIG. 1 is a front view of the frontage (doorway fully closed state) in which the sliding door automatic opening / closing device according to the first embodiment of the present invention is installed, FIG. 2 is an enlarged detailed view of part A of FIG. A perspective view showing the internal structure of the drive unit of the device, FIG. 4 is a front view showing the internal structure of the drive unit of the automatic sliding door opening / closing device, FIG. 5 is a sectional view taken along line BB of FIG. 4, and FIG. A block diagram showing the system configuration of the switchgear, FIG. 7 is a front view of the frontage showing a state in which the doorway is fully opened by the automatic sliding door opening / closing device.

As shown in FIG. 1, the sliding door automatic opening / closing device 1 according to the present embodiment can easily change the existing manual sliding door 50, which is retrofitted, to an automatic type other than the sliding door 50. A part of the periphery, in the present embodiment, as shown in FIG. 1, a drive unit 10 fixed to the central portion in the width direction of the upper side portion of the rectangular frame 51 constituting the frontage, and laterally at the upper portion of the sliding door 50. It is composed of a round bar-shaped rod (long member) 20 extending in a direction (sliding direction of the sliding door 50). Here, one end (right end in FIG. 1) of the rod 20 in the longitudinal direction is attached to the upper end corner portion of the sliding door 50. Specifically, as shown in detail in FIG. 2, a ring-shaped connecting portion 21 is formed at one end of the rod 20, and this connecting portion 21 is fixed to the upper end corner portion (right end corner portion) of the sliding door 50. One end of the rod 20 in the longitudinal direction is attached to the sliding door 50 with some play (play) by being passed through the vertical shaft portion 52a of the hinge 52. Further, the other end of the rod 20 in the longitudinal direction is slidably inserted (supported) into the drive unit 10 (movable by the body), and the details of the configuration will be described later.

As shown in FIGS. 3 to 5, the drive unit 10 includes an electric motor 12 which is a drive source in a rectangular box-shaped case 11, a roller (rotating body) 13 which is rotationally driven by the electric motor 12, and an electric motor. A worm 14 and a worm wheel 15 that transmit the rotation of the motor 12 to the roller 13, a bidirectional clutch 16 provided between the worm wheel 15 and the roller 13, and a control means (control board) for driving and controlling the electric motor 12. It is configured to accommodate 17 and the like.

Here, the electric motor 12 is housed and arranged horizontally in the case 11, and a worm having a small diameter is attached to the end of the output shaft (motor shaft) 12a extending horizontally toward the lateral direction (right side). 14 is attached. A drive shaft 18 is arranged below the output shaft 12a of the electric motor 12 in a direction orthogonal to the output shaft 12a (left-right direction in FIG. 5), and one end of the drive shaft 18 (left end in FIG. 5). A large-diameter worm wheel 15 is attached to the worm wheel 15, and the worm wheel 15 meshes with the small-diameter worm 14.

A roller 13 is attached to the other end of the drive shaft 18 (right end in FIG. 5), and a bidirectional clutch 16 is provided between the worm wheel 15 and the roller 13 on the drive shaft 18. Here, the bidirectional clutch 16 transmits the rotation of the electric motor 12 (rotation on the input side) to the roller 13 (output side), but conversely, the rotation of the roller 13 (rotation on the output side) of the electric motor 12 (rotation on the output side). It blocks the transmission to the input side). Further, the roller 13 is made of a material having a relatively high coefficient of friction, such as a rubber material or a soft synthetic resin material.

The other end of the rod 20 in the longitudinal direction (the left end in FIGS. 3 and 4) slidably penetrates the lower portion of the case 11 of the drive unit 10, and two places on the left and right thereof are inside the case 11. It is supported so as to be slidable (moving forward and backward) by bearing sleeves 19 arranged on the left and right sides of the lower part. Then, the roller 13 is in contact with a part of the portion of the rod 20 facing the inside of the case 11 in a state of being pressed from above. As shown in FIGS. 4 and 5, two portions of the rod 20 facing the inside of the case 11 in the longitudinal direction are slidably supported by the rotatable guide roller 40.

By the way, the sliding door 50 slides laterally (horizontally and horizontally) to open and close the doorway 53 (see FIG. 7). And the exit side), each of which is provided with a wireless motion sensor 30. Here, the system configuration of the sliding door automatic opening / closing device 1 according to the present embodiment will be described below with reference to FIG.

As shown in FIG. 6, a rod displacement detecting mechanism 31 for detecting the displacement amount (sliding amount) of the rod 20 is provided in the case 11 of the drive unit 10, and the rod displacement detecting mechanism 31 and the electric motor are provided. The motor 12 is electrically connected to the control means 17 by wire.

Further, the detection signal by the human sensor 30 is wirelessly transmitted to the control means 17, but in the present embodiment, the wireless seismic sensor 32 that detects the seismic intensity of the earthquake and the body temperature of the person passing through the entrance / exit 53 are detected. A wireless body temperature sensor 33 for detecting and a wireless remote control switch 34 capable of remotely operating the sliding door automatic opening / closing device 1 are provided. The signal transmitted from the remote control switch 34 is wirelessly transmitted to the receiver 35, and the receiver 35 is electrically connected to the control means 17 by wire.

Next, the operation of the sliding door automatic opening / closing device 1 configured as described above will be described.

When the motion sensor 30 on the entrance side detects that a person is approaching the entrance / exit 53 (see FIG. 7), the signal is wirelessly transmitted to the control means 17 of the drive unit 10, and the control receiving this signal is received. The means 17 drives the electric motor 12. When the electric motor 12 is driven, the rotation of the output shaft (motor shaft) 12a is decelerated via the worm 14 and the worm wheel 15, and the rotation direction is changed to a right angle and transmitted to the drive shaft 18. The roller 13 attached to the drive shaft 18 is rotationally driven. In this case, the bidirectional clutch 16 allows the rotation of the electric motor 12 to be transmitted to the roller 13.

When the roller 13 is rotationally driven as described above, the rod 20 in contact with the roller 13 slides due to the frictional resistance force generated between the two. As a result, as shown in FIG. 1, the sliding door 50 that closed the doorway 53 slides together with the rod 20 in the direction of the solid line arrow (left direction) in FIG. 7, and the doorway 53 begins to open. At this time, the displacement amount of the rod 20 is detected by the rod displacement detecting mechanism 31, and the signal is transmitted to the control means 17.

Then, the control means 17 determines the open / closed state of the doorway 53 from the displacement amount of the rod 20 (movement amount of the sliding door 50), and when the doorway 53 is fully opened as shown by the solid line in FIG. 7, the electric motor 12 is used. Stop driving. Then, the movement of the sliding door 50 is also stopped, and the doorway 53 is kept in the fully open state shown by the solid line in FIG.

When a person passes through the doorway 53 in the fully open state and the person is separated from the doorway 53 by a predetermined distance by the motion sensor 30 on the other side (exit side), and the signal is transmitted to the control means 17. , The control means 17 reversely rotates the electric motor 12. Then, the rotation of the output shaft (motor shaft) 12a of the electric motor 12 is transmitted to the roller 13 via the same path as described above, and the roller 13 reverses.

When the roller 13 is reversed as described above, the rod 20 in contact with the roller 13 slides in the direction of the broken line arrow (right side) in FIG. 7 together with the sliding door 50, and the doorway 53 in the fully opened state begins to close. At this time, the control means 17 determines the open / closed state of the doorway 53 from the displacement amount of the rod 20 (movement amount of the sliding door 50), and drives the electric motor 12 when the doorway 53 is fully closed as shown in FIG. To stop. Then, the movement of the sliding door 50 is also stopped, and the doorway 53 is kept in a fully closed state as shown in FIG.

Therefore, in the sliding door automatic opening / closing device 1 according to the present embodiment, the drive unit 10 is fixed to a part of the periphery other than the sliding door 50, and one end in the longitudinal direction of the rod 20 is slidably inserted into the drive unit 10. Can be easily retrofitted by attaching to the sliding door 50, so that the existing manual sliding door 50 can be easily changed to an automatic one. That is, when the electric motor 12 is driven and the roller 13 rotates, the rod 20 in contact with the roller 13 slides together with the sliding door 50, so that the doorway 50 automatically opens and closes the doorway 53.

Further, in the present embodiment, since the bidirectional clutch 16 is provided in the power transmission path from the electric motor 12 to the roller 13, for example, when the sliding door 50 stops in the middle of sliding due to a power failure, the sliding door 50 is manually slid. Even if the rod 20, the roller 13 rotates freely and no load is applied to the electric motor 12, the sliding door 50 can be freely slid with almost no resistance to manually open and close the doorway 53.

Further, in the present embodiment, since wireless motion sensors 30 for detecting the approach and separation of a person to the entrance / exit 53 are provided on the entrance side and the exit side of the entrance / exit 53, respectively, the control means 17 and the motion sensor 30 are provided. The structure can be simplified by eliminating the need for electrical wiring to connect to and.

By the way, in the present embodiment, since the seismic sensor 32 is provided, when an earthquake occurs and the seismic intensity detected by the seismic sensor 32 is a predetermined value (for example, seismic intensity 3) or more, the control means 17 is electrically operated. By driving the motor 12 and sliding the sliding door 50, the doorway 53 can be opened and the state can be maintained. That is, when it becomes necessary for a person to evacuate due to the occurrence of an earthquake, the doorway 53 can be automatically opened to secure an evacuation passage.

Further, in the present embodiment, a body temperature sensor 33 for detecting the body temperature of a person passing through the doorway 53 is provided, and the control means 17 is a person when the body temperature detected by the body temperature sensor 33 is equal to or higher than a predetermined value. Even if the motion sensor 30 detects the approach of a person, the electric motor 12 is not driven. Therefore, for example, in consideration of health damage to other people, it is possible to deny the entry of a person whose body temperature is higher than normal heat.

A mat sensor 36 (see FIG. 6) for detecting whether or not a person has stepped on a mat (not shown) laid at the entrance / exit 53 is provided, and the control means 17 indicates that the mat sensor 36 has stepped on the mat by a person. When it is detected, the electric motor 12 may be driven to open the doorway. Here, if the mat sensor 36 is provided only on one of the mats laid on the entrance side or the exit side of the doorway 53, only the entry of a person into the doorway 53 or the exit of a person from the doorway 53 (one-way hole) can be performed. It can be tolerated.

By the way, in the present embodiment, the rod 20 is arranged at the upper end of the sliding door 50 and the drive unit 10 is fixed to the frame 51 above the sliding door 50, but the rod 20 is the lower end of the sliding door 50. The drive unit 10 may be fixed on the floor surface while being arranged in the portion. Since the installation location of the sliding door automatic opening / closing device 1 can be freely determined in this way, the sliding door automatic opening / closing device 1 can be appropriately installed according to the structure around the existing sliding door 50, and its versatility. Is enhanced.

In addition, in the present embodiment, since the drive unit 10 is fixed to a part of the periphery other than the sliding door 50 so that the position can be adjusted by using a stay (not shown), the position of the drive unit 10 through which the rod 20 is inserted is displaced by the stay. This can be solved, the rod 20 and the sliding door 50 can be smoothly slid, and the doorway 50 can be stably opened and closed by the sliding door 50.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described below with reference to FIGS. 8 and 9.

FIG. 8 is a front view showing the internal structure of the drive unit of the sliding door automatic opening / closing device according to the second embodiment of the present invention, and FIG. 9 is a sectional view taken along line CC of FIG.

In the sliding door automatic opening / closing device 101 according to the present embodiment, the electric motor 112 of the drive unit 110 is housed in the case 111 in a vertically placed state. A drive gear 114 having a small diameter is attached to the lower end of the output shaft (motor shaft) 112a extending vertically downward of the electric motor 112.

Further, in the case 111, a drive shaft 118 parallel to the output shaft 112a of the electric motor 112 is vertically arranged, and at the upper end of the drive shaft 118, a large-diameter driven gear 115 that meshes with the drive gear 114 Is attached, and a bidirectional clutch 116 is incorporated in the center of the driven gear 115. A roller 113 is attached to the lower end of the drive shaft 118, and the roller 113 is pressed against the rod 120 from the lateral direction (horizontal direction). Actually, the rod 120 is laterally pressed by the roller 113. That is, as shown in FIG. 8, rotatable pressing rollers 140 are vertically supported and accommodated on the left and right sides of the case 111, and each pressing roller 140 is supported on the side of the rod 120 by a spring 141, respectively. It is being pressed. Therefore, the rod 120 is laterally pressed by the roller 113 by the urging force of the two left and right springs 141.

Therefore, in the sliding door automatic opening / closing device 101 according to the present embodiment, the drive unit 110 is fixed to a part of the periphery other than the sliding door 50 and the driving unit 110 is fixed to a part other than the sliding door 50, similarly to the sliding door automatic opening / closing device 1 according to the first embodiment. Since the longitudinal end of the rod 120 that is slidably inserted into the unit 110 can be easily retrofitted by attaching it to the sliding door 50, it is possible to easily change the existing manual sliding door 50 to an automatic one. can. That is, when the electric motor 112 is driven, the rotation of the output shaft 112a is decelerated by the drive gear 114 and the driven gear 115 that mesh with each other, and is transmitted to the drive shaft 118 and the roller 113 via the bidirectional clutch 116. As a result, the roller 113 is rotationally driven at a predetermined speed, and the rod 120 slides together with the sliding door 50 due to the frictional resistance force generated between the roller 113 and the rod 120 pressed against the roller 113. Similarly, the doorway 53 (see FIG. 7) is opened and closed by the sliding door 50.

Therefore, the same effect as that of the first embodiment can be obtained in the present embodiment, but the description thereof will be omitted again.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of claims and the technical ideas described in the specification and drawings.

1,101 Automatic sliding door opening / closing device 10,110 Drive unit 12,112 Electric motor 13,113 Roller 16,116 Bidirectional clutch 17 Control means 18,118 Drive shaft 20 Rod 30 Human sensor 31 Rod displacement detection mechanism 32 Seismic sensor 33 Body temperature sensor 36 Mat sensor 50 Sliding door 53 Doorway

Claims (7)

It is a sliding door automatic opening and closing device for automatically opening and closing the doorway by sliding the sliding door.
A drive unit including at least an electric motor as a drive source, a rotating body rotationally driven by the electric motor, and a control means for driving and controlling the electric motor.
A long member that is supported by the drive unit and moves back and forth in the longitudinal direction by the rotation of the rotating body is provided.
By fixing the drive unit to a part of the periphery other than the sliding door and attaching one end or the vicinity thereof in the longitudinal direction to the sliding door, the long member driven by the electric motor. An automatic sliding door opening / closing device characterized in that the sliding door is configured to open / close as the sliding door moves forward and backward. The automatic sliding door opening / closing device according to claim 1, wherein a bidirectional clutch is provided in a power transmission path from the electric motor to the rotating body. An automatic opening / closing type sliding door provided with the sliding door automatic opening / closing device according to claim 1 or 2.
The elongated member is arranged at the upper end of the sliding door and the drive unit is fixed to the wall above the sliding door, or the elongated member is arranged at the lower end of the sliding door and the drive is driven. An automatic opening / closing sliding door that features the unit fixed on the floor. Wireless motion sensors that detect the approach and separation of people are provided on the entrance side and the exit side of the entrance and exit, respectively.
When one of the motion sensors detects the approach of a person, the control means drives the electric motor to slide the sliding door to open the doorway, and then the other motion sensor separates the person. The automatic opening / closing type sliding door according to claim 3, wherein when detected, the electric motor is reversed and the sliding door is slid in the opposite direction to close the doorway. A body temperature sensor that detects a person's body temperature is provided.
The control means does not drive the electric motor even if the motion sensor detects the approach of a person when the body temperature of a person passing through the doorway detected by the body temperature sensor is equal to or higher than a predetermined value. The automatic opening / closing type sliding door according to claim 4. A mat sensor is provided to detect whether or not a person has stepped on the mat laid at the doorway.
The automatic opening / closing sliding door according to claim 3, wherein the control means drives the electric motor to open the doorway when the mat sensor detects that a person has stepped on the mat. When a seismic sensor is provided and the seismic intensity detected by the seismic sensor is equal to or higher than a predetermined value, the control means opens the doorway by driving the electric motor and sliding the sliding door to open the doorway. The automatic opening / closing sliding door according to any one of claims 3 to 6, wherein the sliding door is maintained.

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