JP7002995B2 - Automatic door device - Google Patents

Description

The present invention relates to an automatic door device.

Generally, in an automatic door device in which a door slides to open and close an entrance / exit of a building or the like, the door is configured to be pulled into a door retracting portion on the side of the entrance / exit when the doorway is opened.
As a measure to prevent the door pulled into the door pull-in part from colliding with people or objects, a guard fence is provided in the door pull-in part or a guard is provided to form a door pocket structure so that people or things can enter the door pull-in part. I am trying not to enter.
In addition, as a measure to prevent the door pulled into the door pull-in part from colliding with a person or an object, a sensor capable of detecting a person or an object that has entered a predetermined area near the door pull-in part is provided, and this sensor is used as a person. When an object is detected, the moving door is decelerated or stopped (see, for example, Patent Document 1). With such measures, it is possible to prevent the door from colliding with a person or an object, and even if the door collides with a person or an object, the impact applied to the person or the object can be reduced.

Japanese Patent No. 3847621

For example, in the case of a multi-slide type automatic door device that has two or more doors that open and close the doorway, there is a door that moves to a position away from the door pull-in part, so even if a guard fence or guard is provided in the door pull-in part. , There is a risk that people or objects will be caught between this door and the guard fence or guard.
On the other hand, it is conceivable to make the guard movable together with the door so that there is no space between the door and the guard. There is a problem that management is costly and laborious.

Therefore, an object of the present invention is to provide an automatic door device having a simple structure and capable of preventing a door drawn into a door retracting portion from colliding with a person or an object.

In order to achieve the above object, the automatic door device according to the present invention includes a door that slides to open and close the doorway, a door retracting portion provided on the side of the doorway and into which the door that opens the doorway is drawn. It has a door retracting unit collision prevention mechanism that prevents the door retracted into the door retracting unit from colliding with a person or an object, a drive unit that slides the door, and a control unit that controls the drive unit. The door retracting portion collision prevention mechanism has a seat attached to the door and the door retracting portion, and a winding portion capable of winding and unwinding the sheet, and the winding portion is the door and the door. Attached to either one of the door retractors, the sheet is attached to either the door or the door retractor with a take-up side edge connected to the take-up portion via the take-up portion. The drawer side edge portion opposite to the take-up side edge portion is attached to the other of the door and the door retracting portion, and is urged in the direction of being wound up by the take-up portion. And.

In the present invention, the seat is attached to the door and the door retracting portion and is urged in the direction of being wound up by the take-up portion. This keeps the seat in a stretched state between the door and the door retractor. Therefore, it is possible to prevent a person or an object from entering between the door and the door retracting portion of the seat, and it is possible to prevent the door retracted into the door retracting portion from colliding with the person or the object.
In addition, the door retracting part collision prevention mechanism has a simple structure having a seat and a winding part, so that it can be easily installed and can be installed in both new and existing automatic door devices. ..

Further, in the automatic door device according to the present invention, the take-up portion may be attached to the door retracting portion.
With such a configuration, the take-up portion can be easily installed without considering the trajectory when moving with the door, as compared with the case where the take-up portion is attached to the door.

Further, in the automatic door device according to the present invention, the door retracting portion is provided with a guard fence between the door retracted into the door retracting portion and the outside, and the sheet is the door and the said. It may be attached to a guard fence.
With such a configuration, it is possible to prevent the door retracted into the door retracting portion from colliding with a person or an object by both the guard fence and the door retracting portion collision prevention mechanism.

Further, in the automatic door device according to the present invention, in the control unit, when the door closes the doorway, the drive unit exerts a force for the winding unit to urge the seat in the winding direction. The door may be made smaller than the force that moves the door in the direction of closing the doorway.
With such a configuration, it is possible to prevent the door moving in the direction of closing the doorway from stopping due to the force of the take-up portion in the direction of winding the sheet.

Further, in the automatic door device according to the present invention, the control unit exerts a force forcing the winding unit in the direction of winding the sheet while the door closes the doorway. May be less than the force pushing the door in the direction of closing the doorway.
With such a configuration, it is possible to prevent the door closing the doorway from opening the doorway due to the force of the take-up portion in the direction of winding the sheet.

Further, the automatic door device according to the present invention has a sensor capable of detecting that a person or an object has entered a predetermined area in the vicinity of the door retracting portion, and the control unit has the door closed at the doorway. When the sensor detects that a person or an object has entered the area in the vicinity of the door retracting portion, the winding portion urges the seat in the winding direction and the driving portion. May increase at least one of the forces pushing the door in the direction of closing the doorway.
With such a configuration, when a person or an object enters the area near the door retracting part while the door is closed at the doorway, the tension of the seat becomes stronger, so that the person or the object can move. When in contact with the seat, the seat can bounce people or objects away from the door retractor. As a result, it is possible to prevent a person or an object from entering the door retracting portion, and it is possible to prevent a door drawn into the door retracting portion from colliding with a person or an object.

According to the present invention, it is possible to prevent a door drawn into a door retracting portion from colliding with a person or an object with a simple structure.

(A) is a front view showing an example of an automatic door device according to the first embodiment of the present invention, showing a state in which the doorway is closed, and (b) is a sectional view taken along line AA of (a). (A) is a front view showing an example of an automatic door device according to the first embodiment of the present invention, showing a state in which the doorway is open, and (b) is a sectional view taken along line BB of (a). It is a flowchart explaining the closing operation and opening operation of a door. It is a figure which shows the state which the doorway is closed in the front view which shows an example of the automatic door apparatus by 2nd Embodiment of this invention. It is a figure which shows the state which the doorway is closed in the front view which shows an example of the automatic door apparatus by the 3rd Embodiment of this invention. It is a figure which shows the state which the doorway is closed in the front view which shows an example of the automatic door apparatus by 4th Embodiment of this invention. It is a flowchart explaining the state which the door is closed according to 4th Embodiment of this invention. (A) is a front view showing an example of an automatic door device according to a fifth embodiment of the present invention, showing a state in which the doorway is closed, (b) is a sectional view taken along line CC of (a), (c). ) Is a diagram corresponding to the CC line cross section of (a) showing a state in which the doorway is open. (A) is a front view showing a modified example of the automatic door device according to the fifth embodiment of the present invention, showing a state in which the doorway is closed, (b) is a sectional view taken along line DD of (a), (a). c) is a diagram corresponding to the DD line cross section of (a) showing a state in which the doorway is open. It is a figure which shows the state which the doorway is closed in the front view which shows the modification of the automatic door apparatus by embodiment of this invention.

(First Embodiment)
Hereinafter, the automatic door device 1A according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
As shown in FIG. 1, the automatic door device 1A according to the present embodiment is provided in the opening 12 formed in the wall portion 11 of the building.
In the following, the horizontal direction along the wall portion 11 is defined as the left-right direction, and the horizontal direction orthogonal to the left-right direction is defined as the indoor / outdoor direction. Further, one side in the indoor / outdoor direction (the inner side in the direction orthogonal to the paper surface in FIG. 1 (a), the upper side in FIG. 1 (b)) is the indoor side, and the other side in the indoor / outdoor direction (in FIG. 1 (a)). The front side in the direction orthogonal to the paper surface, the lower side in FIG. 1B) is the outdoor side.
In the present embodiment, an entrance / exit 13 penetrating so as to be able to pass in the indoor / outdoor direction is provided on one side in the left-right direction inside the opening 12, and a FIX 41 described later is provided on the other side in the left-right direction. It is designed so that it cannot pass indoors or outdoors.

The automatic door device 1A includes a frame 2 provided in the opening 12, two doors 3 and 3 that slide in the left-right direction to open and close the doorway 13, and a doorway 13 provided on the other side of the doorway 13 in the left-right direction. A door retracting unit 4 into which two doors 3 and 3 are drawn in, a door driving unit 5 for sliding the two doors 3 and 3, a control unit 6 for controlling the door driving unit 5, and a predetermined position near the doorway 13. A first sensor 7 that detects that a person or an object has entered the area of the door, a door retracting portion collision prevention mechanism 8 that prevents the two doors 3 and 3 from colliding with a person or an object in the door retracting portion 4. have.

The frame body 2 is provided along the entire upper edge portion of the opening 12 and extends in the left-right direction, and the frame body 2 is provided along the entire upper edge portion on one side in the left-right direction of the opening 12 and is provided in the vertical direction. It has a first vertical frame 22 that extends, and a second vertical frame 23 that is provided along the entire edge of the opening 12 on the other side in the left-right direction and extends in the vertical direction. In the frame body 2, the upper end of the first vertical frame 22 is joined to one end of the upper frame 21 in the left-right direction, and the upper end of the second vertical frame 23 is the other end of the upper frame 21 in the left-right direction. It is formed in a three-sided frame joined to the portion.
The upper frame 21 is provided with two upper guide rails 24, 25 for guiding the slides of the two doors 3, 3 at intervals in the indoor and outdoor directions. Of the two upper guide rails 24 and 25, the upper guide rail 24 provided on the outdoor side in the indoor / outdoor direction is used as the first upper guide rail 24, and the upper guide rail 25 provided on the indoor side is used as the second upper guide rail 25. And.

In the present embodiment, the two lower guide rails 26, 27 extending in the left-right direction to guide the slides of the two doors 3, 3 on the floor portion 14 between the first vertical frame 22 and the second vertical frame 23. Are provided at intervals in the indoor and outdoor directions. The lower guide rail 26 provided on the outdoor side in the indoor / outdoor direction is referred to as the first lower guide rail 26, and the lower guide rail 27 provided on the indoor side is referred to as the second lower guide rail 27.
Inside the frame 2, a doorway 13 is provided on one side in the left-right direction, and a door retracting portion 4 is provided on the other side in the left-right direction of the doorway 13.

The door retracting portion 4 is a door in which a FIX window 41 provided on the indoor side in the indoor / outdoor direction and two doors 3 and 3 provided on the outdoor side of the FIX window 41 and having an open doorway 13 are retracted and arranged. It has a lead-in space 42 and.
The door lead-in space 42 is arranged with the other side portion of the first upper guide rail 24, the second upper guide rail, the first lower guide rail 26, and the second lower guide rail 27 in the left-right direction.
A FIX window 41 is provided on the indoor side of the first upper guide rail 24, the second upper guide rail 25, the first lower guide rail 26, and the second lower guide rail 27. The second upper guide rail and the second lower guide rail 27 are arranged on the indoor side of the first upper guide rail 24 and the first lower guide rail 26 and are close to the FIX window 41.
The FIX window 41 is provided over the entire height from the floor portion 14 to the lower end of the upper frame 21. A mullion 43 extending in the vertical direction is provided at the edge of the FIX window 41 on the entrance / exit 13 side (one side in the left-right direction).

The two doors 3 and 3 are arranged at positions offset in the indoor and outdoor directions. The door 3 arranged on the outdoor side in the indoor / outdoor direction is referred to as the first door 31, and the door 3 arranged on the indoor side in the indoor / outdoor direction is referred to as the second door 32. The first door 31 is configured to be slidable along the first upper guide rail 24 and the first lower guide rail 26 over the entire space between the first vertical frame 22 and the second vertical frame 23. The second door 32 is configured to be slidable along the second upper guide rail 25 and the second lower guide rail 27 along the entire space between the first vertical frame 22 and the second vertical frame 23.

The first door 31 has a square frame-shaped stile 311 and a glass 312 fitted inside the stile. The stile 311 has an upper stile 313 extending in the left-right direction along the upper edge, a lower stile 314 extending in the left-right direction along the lower edge, and a first stile extending in the vertical direction along one edge in the left-right direction. It has one vertical stile 315 and a second vertical stile 316 extending in the vertical direction along the other side edge in the left-right direction.

As shown in FIG. 2, the first door 31 is arranged in the door retracting space 42 when the doorway 13 is open (hereinafter referred to as an open state). At this time, the first door 31 is arranged on the outdoor side of the FIX window 41, and the second vertical frame 316 is close to the second vertical frame 23. The main body of the first door 31 in the open state may be maintained in a state of being arranged in the door retracting space 42 by the door driving unit 5.
As shown in FIG. 1, the first door 31 is arranged on one side in the left-right direction inside the doorway 13 when the doorway 13 is closed (hereinafter referred to as a closed state). In the first door 31, the first vertical frame 315 is in contact with the first vertical frame 22. The closed first door 31 is pressed toward the first vertical frame 22 by the door driving unit 5. The pressing force of the closed first door 31 against the first vertical frame 22 acts in the direction from the other side in the left-right direction to one side.

The second door 32 has a square frame-shaped stile 321 and a glass 322 fitted inside the stile. The stile 321 has an upper stile 313 extending in the left-right direction along the upper edge portion, a lower stile 324 extending in the left-right direction along the lower edge portion, and a first stile extending in the vertical direction along one edge in the left-right direction. It has one vertical stile 325 and a second vertical stile 326 extending in the vertical direction along the other side edge in the left-right direction.

As shown in FIG. 2, the second door 32 is arranged in the door lead-in space 42 in a state where the doorway 13 is open (hereinafter referred to as an open state), and is located outside the FIX window 41 and the first door 31. It is arranged on the indoor side of the door and is sandwiched between the first door 31 and the FIX window 41.
At this time, in the second door 32, the second vertical frame 326 is in close proximity to the second vertical frame 23.
As shown in FIG. 1, the second door 32 is arranged on the other side in the left-right direction inside the doorway 13 when the doorway 13 is closed (hereinafter referred to as a closed state). In the second door 32, the first vertical stile 325 is arranged so as to overlap the indoor side of the second vertical stile 316 of the first door 31, and the second vertical stile 326 overlaps the outdoor side of the mullion 43 of the FIX window 41. Have been placed.

The first door 31 and the second door 32 are configured to slide in conjunction with each other. In both cases of changing from the closed state to the open state and changing from the open state to the closed state, the first door 31 travels a longer distance than the second door 32. In both cases from the closed state to the open state and from the open state to the closed state, the movement of the 1-door 31 and the 2nd door 32 starts at the same time, and the 1st door 31 is no longer the 2nd door 32. It is configured to move at speed. In the present embodiment, the moving distance of the first door 31 is about twice the moving distance of the second door 32, so that the moving speed of the first door 31 is about twice the moving speed of the second door 32. Is set to.

When the first sensor 7 detects that a person or an object has entered a predetermined area near the doorway 13, the control unit 6 drives the door drive unit 5 to open the first door 31 and the second door 32. When the first sensor 7 detects that there is no person or object in a predetermined area near the doorway 13, the door drive unit 5 is driven to close the first door 31 and the second door 32. ing.
The timing of driving the door drive unit 5 so that the control unit 6 closes the first door 31 and the second door 32 is such that the first sensor 7 does not have a person or an object in a predetermined area near the doorway 13. It may be set as appropriate, such as when a predetermined time has elapsed since the detection.
Further, the automatic door device 1A is provided with a door closing position switch 65 for detecting the fully closed position of the door 3 in the vicinity of one end of the upper frame 21 in the left-right direction, and the other in the left-right direction of the upper frame 21. A door open end position switch 66 for detecting the fully open position of the door 3 is provided in the vicinity of the side end portion. The control unit 6 is configured to be able to control the door drive unit 5 based on the fully closed position and the fully open position of the door 3 detected by the door closed end position switch 65 and the door open end position switch 66.

The door retracting portion collision prevention mechanism 8 includes a seat 81 attached to the first door 31 and the door retracting portion 4, a winding portion 82 attached to the door retracting portion 4 and capable of winding and unwinding the seat 81. have.
The sheet 81 is a flexible planar member such as cloth, vinyl, or nylon, and its surface is formed in a rectangular shape. The sheet 81 is used in a posture in which its surface faces indoors and outdoors when it is unfolded. Since the seat 81 is in an expanded state as the first door 31 moves, information visible to a person passing through the doorway 13 may be displayed on the seat 81.
In the seat 81, the edge portion 811 on one side in the left-right direction in a posture in which the surface faces the indoor / outdoor direction is fixed to the second vertical frame 316 of the first door 31 without a gap via the fixing bracket 83, and the left and right sides are fixed. The edge portion 812 on the other side in the direction is fixed to the take-up portion 82.
In the following, the edge portion 812 fixed to the take-up portion 82 of the sheet 81 is referred to as a take-up side edge portion 812, and the edge portion 812 on the opposite side thereof is referred to as a drawer side edge portion 811.

The take-up portion 82 includes a take-up shaft portion 84 to which a take-up side edge portion 812 of the sheet 81 is connected and rotates around an axis, a take-up drive portion 85 that rotates the take-up shaft portion 84, and a take-up shaft portion 84. It also has a case 86 for accommodating the sheet 81 wound up on the take-up shaft portion 84. The take-up portion 82 is provided in the door retracting portion 4 in a posture in which the axis of the take-up shaft portion 84 extends in the vertical direction. The take-up portion 82 is arranged on the outdoor side of the second vertical frame 23. The take-up portion 82 is provided in close proximity to the second frame portion in contact with or with a slight gap. The area where the take-up portion 82 is provided is also included in the door lead-in space 42. As a result, the take-up portion 82 is provided at the other end portion in the left-right direction in the door retracting space 42.

The take-up drive unit 85 can rotate the take-up shaft unit 84 around an axis, and is configured to be driveable under the control of the control unit 6. The control unit 6 is provided with an interlocking device 61 that interlocks the door drive unit 5 and the take-up drive unit 85. The door drive unit 5 and the take-up drive unit 85 are configured to be able to be driven in synchronization by the interlocking device 61.
The take-up drive unit 85 is configured so that the take-up shaft portion can be urged in the direction in which the sheet 81 is taken up. As a result, the sheet 81 is urged in the winding direction. The take-up drive unit 85 is configured to rotate the take-up shaft portion 84 by using, for example, the force of a motor or a spring.
The lower end of the take-up drive unit 85 is, for example, about 10 cm above the floor 14 at a height near the floor 14, and the upper end is the middle portion of the doors 3 and 3 in the height direction. It is provided at a height about 120 cm above the 14. In the present embodiment, the take-up drive unit 85 is fixed to the floor unit 14 and the second vertical frame 23.

Such a door retracting portion collision prevention mechanism 8 operates as follows.
As shown in FIG. 1, when the first door 31 and the second door 32 are in the closed state in which the doorway 13 is closed, the seat 81 has a drawer side edge 811 together with the second vertical frame 316 of the first door 31. It is arranged in the middle portion in the left-right direction of the door, and is arranged at the other end portion in the left-right direction in the door pull-in space 42 with the take-up side edge portion 812 fixed to the take-up shaft portion 84 of the take-up portion 82. There is. Therefore, the seat 81 is in a state of being expanded to the outdoor side of the second door 32 and the door retracting space 42.

As shown in FIG. 2, when the first door 31 and the second door 32 are in an open state in which the doorway 13 is opened. In the sheet 81, the drawer side edge portion 811 is arranged together with the second vertical frame 316 of the first door 31 in the vicinity of the second frame portion (near the other end portion in the left-right direction in the door retracting space 42), and the sheet 81 is wound up. The side edge portion 812 is arranged at the other end of the door lead-in space 42 in the left-right direction in a state of being fixed to the take-up shaft portion 84 of the take-up portion 82.
The distance between the take-up side edge portion 812 and the drawer side edge portion 811 is smaller when the doors 3 and 3 are in the open state than when the doors 3 and 3 are in the closed state. Therefore, when the first door 31 is changed from the closed state to the open state, the seat 81 may be slackened. However, in the present embodiment, the take-up drive unit 85 winds the take-up shaft portion 84 around the seat 81. Since the door is urged in the taking direction, when the first door 31 is opened from the closed state, the take-up drive unit 85 rotates the take-up shaft portion 84 in the take-up direction to wind up the seat 81. Has been done. As a result, a predetermined tension is generated in the sheet 81, and the sheet 81 is configured so as not to sag.

In the door retracting portion collision prevention mechanism 8 according to the present embodiment, the force for winding the seat 81 by the take-up drive unit 85 (hereinafter referred to as the take-up force) depends on the opening / closing operation of the first door 31 and the second door 32. Is controlled to change.
In the present embodiment, the strength of the winding force is set in three stages, and each of them is the winding force A to C. The winding forces A to C all act in a direction in which the drawer side edge portion 811 of the sheet 81 is moved from one side in the left-right direction to the other side. The direction of the force acting on the sheet 81 by the winding force A is from one side in the left-right direction to the other side.

The winding force A is a force acting in the direction opposite to the pressing force of the closed first door 31 against the first vertical frame 22, and is set to be smaller than the pressing force. In the closed state, the take-up force A acts to keep the first door 31 pressed against the first vertical frame 22, while the seat 81 takes up the seat 81 without changing the position of the drawer side edge portion 811. Since the end of the side is pulled to the other side in the left-right direction, it is maintained in a stretched state without sagging.

The take-up force B is set to be substantially the same as the force for maintaining the open state of the first door 31 main body in the state of being pulled into the door retracting space 42. In the present embodiment, the direction of the force acting on the seat 81 by the take-up force B is the same as the direction acting on the first door 31 in order to keep the first door 31 pulled into the door retracting space 42. Is set to. By the action of the take-up force B in the open state, the first door 31 is maintained in a state of being pulled into the door pull-in space 42, and the seat 81 is on the take-up side without changing the position of the drawer side edge portion 811. Since the end is pulled to the other side in the left-right direction, it is maintained in a stretched state without sagging.

If the sheet 81 is stretched without sagging in the open state, the drawer side edge portion 811 of the sheet 81 is stopped, so that the sheet 81 does not sag even if the winding force is zero. It is kept taut.

The take-up force C is set to be smaller than the force acting on the seat 81 from the first door 31 during the closing operation from the open state to the closed state. The force acting on the seat 81 from the first door 31 during the closing operation from the released state to the closed state acts from the other side in the left-right direction toward one side, and the winding force C acts from one side in the left-right direction. It is acting in the direction toward the other side. When the winding force C acts during the closing operation, the seat 81 is pulled to both sides in the left-right direction while the first door 31 closes, so that the seat 81 is maintained in a stretched state without sagging.

In the present embodiment, the take-up portion 82 is set to take up the seat 81 at the same speed as the first door 31 during the opening operation from the closed state to the open state. By doing so, during the opening operation of the first door 31, the seat 81 is wound at the same speed as the first door 31, so that the seat 81 is maintained in a stretched state without sagging.

As shown in the flowchart of FIG. 3, when the control of the winding force is started (S-1), it is determined whether or not the first door 31 is stopped in the closed state (S-2). When it is determined that the first door 31 is stopped in the closed state, the take-up force A acts (S-3). If it is determined that the first door 31 is stopped in the stopped state, it is determined whether or not the first door 31 is stopped in the open state (S-4).
When it is determined that the first door 31 is stopped in the open state, the take-up force is set to zero, or the take-up force B acts (S-5). If it is determined that the first door 31 is not stopped in the open state, it is determined whether or not the first door 31 is in the open operation (S-6).
When it is determined that the first door 31 is in the opening operation, the winding unit 82 winds the seat 81 at the same speed as the first door 31 in the opening operation (S-7). If it is determined that the first door 31 is not in the opening operation, it is determined that the door is in the closing operation (S-8), and the winding force C acts (S-9).

Next, the operation and effect of the automatic door device 1A according to the first embodiment of the present invention described above will be described with reference to the drawings.
In the automatic door device 1A according to the first embodiment of the present invention described above, the seat 81 is attached to the first door 31 and the door retracting portion 4 and is urged to be wound up by the winding portion 82. As a result, the seat 81 is always maintained in a stretched state between the first door 31 and the door retracting portion 4. Therefore, the seat 81 can prevent a person or an object from entering between the first door 31 and the door retracting portion 4, and the first door 31 retracted into the door retracting portion 4 collides with the person or the object. Can be prevented.
Further, since the door retracting portion collision prevention mechanism 8 has a simple structure having a seat 81 and a winding portion 82, it is easy to install and is installed in both a new and existing automatic door device. be able to.

Further, since the take-up portion 82 is attached to the door retracting portion 4, the take-up portion 82 has a locus when moving together with the first door 31 as compared with the case where the take-up portion 82 is attached to the first door 31. It can be easily installed without consideration.

Further, in the control unit 6, when the first door 31 closes the doorway 13, the take-up unit 82 exerts a force in the direction of winding up the seat 81, and the door drive unit 5 opens and closes the first door 31. It is designed to be smaller than the force for moving 13 in the closing direction. As a result, it is possible to prevent the first door 31, which moves in the direction of closing the doorway 13, from stopping due to the force of the take-up portion 82 in the direction of winding up the seat 81.

Further, in the control unit 6, when the first door 31 closes the doorway 13, the take-up unit 82 exerts a force in the direction of winding the seat 81, and the door drive unit 5 presses the first door 31. The force of pressing the doorway 13 in the closing direction is smaller than the force. As a result, it is possible to prevent the first door 31, which closes the doorway 13, from opening the doorway 13 due to the force of the take-up portion 82 in the direction of winding up the seat 81.

(Second Embodiment)
Next, another embodiment of the present invention will be described with reference to the accompanying drawings. A configuration different from the embodiment will be described.
As shown in FIG. 4, in the automatic door device 1B according to the second embodiment, the take-up portion 82B of the door retracting portion collision prevention mechanism 8B is attached to the second vertical frame 316 of the first door 31, and the drawer side of the seat 81B. The edge portion 811 is attached to the second vertical frame 23.
In the second embodiment, the take-up portion 82B is configured to move together with the first door 31.

The automatic door device 1B according to the second embodiment exhibits the effect of the first embodiment.

(Third Embodiment)
As shown in FIG. 5, the automatic door device 1C according to the third embodiment is configured such that one door 3C opens and closes the doorway 13. The door 3C has a stile portion 331 and a glass 332 fitted inside the stile portion 331. The stile portion 331 has an upper stile 333, a lower stile 334, a first vertical stile 335 arranged on one side in the left-right direction, and a second vertical stile 336 arranged on the other side in the left-right direction.
The take-up portion 82C of the door retracting portion collision prevention mechanism 8C is fixed to the second vertical frame 23 as in the first embodiment, and the drawer side edge portion 811 of the seat 81C is fixed to the second vertical frame 336 of the door 3C. ing.

In the automatic door device 1C according to the third embodiment, the effect of the first embodiment is obtained even when there is only one door 3C that closes the doorway 13.

(Fourth Embodiment)
As shown in FIG. 6, the automatic door device 1D according to the fourth embodiment can detect that a person or an object has entered a predetermined range in the vicinity of the door retracting portion 4 into the automatic door device 1A according to the first embodiment. A second sensor (sensor) 91 is provided. The detection signal of the second sensor 91 is communicated to the control unit 6D.
As shown in the flowchart of FIG. 7, when the control by the detection signal of the second sensor 91 is performed (S-11), the second sensor 91 moves to a predetermined range in the vicinity of the door retracting portion 4 in the closed state. When it is determined whether or not it has detected that an object has entered (S-12), and it is soldered that the second sensor 91 has detected that a person or an object has entered a predetermined range in the vicinity of the door retracting portion 4. The control unit 6 controls to increase the pressing force of the first door 31 and the winding force of the winding unit 82 to strengthen the tension of the seat 81 (S-13). In the open state or when the first door 31 and the second door 32 are moving, when the second sensor 91 detects that a person or an object has entered a predetermined range in the vicinity of the door retracting portion 4, it is determined. The control unit 6 adjusts at least one of the speed of the first door 31 and the winding force of the winding unit 82 to control the tension of the seat 81.
When the second sensor 91 does not detect that a person or an object has entered a predetermined range in the vicinity of the door retracting portion 4, the same control as in the first embodiment is performed (S-14).

In the automatic door device 1D according to the fourth embodiment, when a person or an object enters a region near the door retracting portion 4 in a state where the door 3 is closed at the doorway 13, the tension of the seat 81 becomes stronger. Therefore, when a person or an object comes into contact with the sheet 81, the sheet 81 can repel the person or the object to the side away from the door retracting portion 4. As a result, it is possible to prevent a person or an object from entering the door retracting portion 4, and it is possible to prevent the door 3 drawn into the door retracting portion 4 from colliding with a person or an object.

(Fifth Embodiment)
As shown in FIG. 8, in the automatic door device 1E according to the fifth embodiment, the door retracting portion 4 is provided with a guard fence 92, and the winding portion 82E of the door retracting portion collision prevention mechanism 8E is fixed to the guard fence 92. Has been done. The guard fence 92 is provided on the outdoor side of the door pull-in space 42 of the door pull-in portion 4. The guard fence 92 has a rod-shaped member such as a steel round pipe formed in a U-shape (U-shape) that opens downward, and is arranged over the entire left-right direction of the door retracting portion 4. There is. The take-up portion 82E is attached to an edge portion 921 on one side in the left-right direction of the guard fence 92. The drawer side edge portion 811 of the seat 81E is fixed to the second vertical frame 316 of the first door 31.

In such a case, as shown in FIG. 8C, when the seat 81E is in the open state, the second vertical frame 316 of the first door 31 to which the drawer side edge portion 811 of the seat 81E is fixed is in the left-right direction of the guard fence 92. The seat 81E will be pulled out between the guard fence 92 and the first door 31 so that it will move to the other side in the left-right direction with respect to the take-up portion 82E attached to the edge portion 921 on one side. It becomes an intrusive shape.
In the automatic door device 1E, the sheet 81E that has been pulled out is wound up and pulled out to the opposite side again while the open state is changed to the closed state and the closed state is changed to the open state. Therefore, in the automatic door device 1E, the sheet 81E is wound around the winding portion 82E in the intermediate portion (between the door closed end position switch 65 and the open end position switch 66) in the left-right direction of the upper frame 21. A door intermediate position switch 67 for detecting the position of the door 3 is provided. The control unit 6 may be configured to be able to switch the operation of the winding unit 82E based on the position of the door 3 detected by the door intermediate position switch 67. The door intermediate position switch 67 may be a rotation speed position control device such as an encoder in a motor or a Hall element.

In the present embodiment, the guard fence 92 is formed in a U-shape that opens downward, but as shown in FIG. 9, the guard fence 93 is formed in an L-shape and is formed in the left-right direction. The winding portion 82E may be provided on the edge portion 931 on one side.
In the automatic door device 1E according to the fifth embodiment, it is possible to prevent the doors 3 and 3 drawn into the door retracting portion 4 from colliding with a person or an object by both the guard fences 92 and 93 and the door retracting portion collision prevention mechanism 8E.

Although the embodiment of the automatic door device according to the present invention has been described above, the present invention is not limited to the above embodiment and can be appropriately modified without departing from the spirit of the present invention.
For example, in the above embodiment, the seat 81 of the door retracting portion collision prevention mechanism 8 is configured to be pulled out or wound up at the lower side of the height dimension of the door 3, but is shown in FIG. Like the automatic door device 1F, the seat 81F of the door retracting portion collision prevention mechanism 8F may be configured to be pulled out or wound over the entire height dimension of the door 3. Further, the seat 81F of the door retracting portion collision prevention mechanism 8F may be configured to be pulled out or wound up at an intermediate portion in the height direction of the door 3.

Further, in the above embodiment, the control unit 6 adjusts the winding force of the winding unit 82 and the speed and pressing force of the doors 3 and 3 to control the tension of the seat 81 to be a desired value. However, one of the winding force of the winding portion 82 and the speed or pressing force of the doors 3 and 3 may be adjusted to control the tension of the seat 81 to a desired value.
Further, in the above embodiment, the door 3 is provided on the outdoor side of the FIX window 41, and the seat 81 is stretched on the outdoor side of the door 3. On the other hand, the door 3 may be provided on the indoor side of the FIX window 41, and the seat 81 may be stretched on the indoor side of the door 3.
Further, in the above embodiment, the number of doors 3 for opening and closing the doorway 13 is one or two, but the number of doors 3 may be three or more. Further, in the above embodiment, the door 3 is configured to be pulled into the other side of the doorway 13 in the left-right direction, but the door is configured to be pulled into one side of the doorway in the left-right direction or both sides in the left-right direction. It may have been done.

1A-1E Automatic door device 3,3C Door 4 Door retracting part 5 Door drive unit 6 Control unit 8,8B, 8C, 8E Door retracting part Collision prevention mechanism 13 Doorway 81 Seat 82 Winding part 91 Second sensor (sensor)
92 Guard rail 811 Drawer side edge 812 Take-up side edge

Claims (6)

A door that slides the doorway to open and close, and
A door retracting portion provided on the side of the doorway and into which the door that opens the doorway is drawn.
A door retracting portion collision prevention mechanism that prevents the door retracted into the door retracting portion from colliding with a person or an object,
The drive unit that slides the door and
It has a control unit that controls the drive unit, and has
The door retracting portion collision prevention mechanism includes the door and a seat attached to the door retracting portion.
It has a take-up portion that can take up and take out the sheet.
The take-up portion is attached to either the door or the door retracting portion.
In the sheet, the take-up side edge portion connected to the take-up portion is attached to either the door or the door retracting portion via the take-up portion, and the sheet is attached to the side opposite to the take-up side edge portion. An automatic door device, wherein a drawer side edge portion is attached to the other of the door and the door retracting portion, and is urged in a direction of being wound by the winding portion. The automatic door device according to claim 1, wherein the take-up portion is attached to the door retracting portion. The door retracting portion is provided with a guard fence between the door retracted into the door retracting portion and the outside.
The automatic door device according to claim 1 or 2, wherein the seat is attached to the door and the guard rail. When the door closes the doorway, the control unit moves a force that urges the take-up unit in the direction of winding the sheet, and the drive unit moves the door in the direction of closing the doorway. The automatic door device according to any one of claims 1 to 3, wherein the force is smaller than the force to cause the door. The control unit exerts a force in the direction in which the take-up unit winds up the seat while the door closes the door, and the drive unit closes the door in the direction in which the door is closed. The automatic door device according to any one of claims 1 to 4, wherein the force is smaller than the pressing force. It has a sensor that can detect that a person or an object has entered a predetermined area near the door retracting portion.
When the sensor detects that a person or an object has entered a region near the door retracting portion while the door is closed at the doorway, the control unit winds the sheet. The automatic door according to any one of claims 1 to 5, wherein at least one of the force for urging the door and the force for the driving unit to push the door in the direction of closing the doorway is increased. Device.

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