JPH0627462B2 - Circular door opener - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a circular door opening / closing device, and in particular, an improvement to the circular door opening / closing device normally used as a sliding door type automatic door.

[Conventional technology]

In recent years, as an automatic door installed at the entrance of buildings,
A circular door opening / closing device has been put into practical use. For example, as shown in FIG. 17, this opening / closing device includes a pair of door bodies A, A whose cross section is curved in an arc shape, and a pair of partition walls B, B having an arc-shaped curved portion that follows them. The indoor D side and the outdoor E side are arranged opposite to each other across the windbreak chamber C, and the pair of door bodies A, A are drawn or brought close to each other in an arc shape by the operation of the driving device, thereby the indoor D The entrance F on the side and the entrance G on the outside E side are opened and closed, respectively. Human body detection parts H ... H for detecting the presence of a person using a detection switch or the like are provided in front of and behind the entrances F and G, and based on signals from the detection switches and the like. By driving the drive device by using the doors, the corresponding door bodies A, A are opened and closed as sliding doors. In that case, as shown in the figure, the doors A ... A are usually arranged offset from the corresponding partition walls B ..

[Problems to be solved by the invention]

However, according to the conventional circular door opening / closing device described above, when an unexpected situation such as a fire or an earthquake occurs and an indoor person evacuates in an emergency, the evacuees rush into the doorway and quickly go out to the outdoors. Try to. At this time, the door bodies A and A are opened,
Since it is necessary to wait until the entrances F and G are opened to a width that allows a person to pass through, a panic condition occurs, which is extremely dangerous.

Also, in the event of an unforeseen event such as a fire or earthquake, the drive unit will stop operating and the door will not open automatically. Had to manually pull the door to open it, which made it difficult to evacuate quickly and smoothly.

[Means for solving problems]

In view of the above circumstances, the present invention adds a configuration as an opening door to a circular door opening / closing device that is usually used as a sliding door type automatic door, so that the circular door can be quickly and smoothly moved in and out in an emergency or an emergency. It was made as a technical problem to provide an opening / closing device, and the means of the means is at least a pair of partition walls,
Each door body has a pair of door bodies that are arranged at the entrances and exits formed in these partition walls and are curved in an arc shape, and a pair of door roller mechanisms that support these door bodies and that can run in the reverse direction. In a circular door opening / closing device equipped with a driving device that drives the doors in an arc shape along the doorway or to approach each other in an arc, unify each door body with respect to the corresponding partition wall only on the outdoor side. And is connected to each corresponding door roller mechanism so as to be horizontally turnable in the offset direction via a rotary shaft fixed to the end portion of each door body on the side of drawing.

[Action]

According to the above means, a circular door opening / closing device in which each door body normally operates as a sliding door by the operation of the door roller mechanism and the driving device, and a function as an opening door in which each door body horizontally swings with its end on the drawing side as a fulcrum Will be owned. By operating each door as an open door in this way, it is not necessary to wait until the door is opened as a sliding door and the width of the doorway is wide enough for people to pass through. It is not necessary to draw and the door body is opened as an open door by simply pressing the door body, and it is possible to immediately pass through the doorway.

Further, by arranging all the door bodies with respect to each corresponding partition wall to the outdoor side and horizontally turning in the offset direction, it is possible to open all the door bodies in the evacuation direction during evacuation. This means that the evacuees will be opened in the direction of travel, and the evacuees will be able to pass through the doorway smoothly without any support.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

First, a schematic configuration of a circular door opening / closing device according to the present invention will be described with reference to FIG.

A circular door opening / closing device 1 provided at an entrance for connecting the outdoor (the front side in the drawing) and the indoor is a pair of door pockets 2 and 2 arranged on the outdoor side and having a curved cross section in an arc shape. A pair of door bodies 4 and 4 which are also disposed in the doorway 3 formed between the two partition walls 2 and 2 and which are also curved in an arc shape, and an indoor side, which is arranged to face them with the wind-removing chamber 5 therebetween. It has partition walls 2 ', 2', a doorway 3 ', and door bodies 4', 4 '. Further, the seamless 6 arranged above the partition walls 2, 2 (2 ', 2') and the door bodies 4, 4 (4 ', 4').
Rails 8 and 8 are installed on the mounting member 7 inside, and the door bodies 4 and 4 (4 ') are provided via the door roller mechanisms 9 ... 9 supported on the rails 8 and 8 so as to be able to run forward and backward. , 4 ') are drawn or drawn close to each other.

Each of the door roller mechanisms 9 has a pair of door hangers 9a and 9b to which traveling wheels traveling on the corresponding rails 8 are attached.
And a suspension frame body 9c fixed across the hangers 9a and 9b, and the door engine 11 pivotally moves the timing belt 10 fixed to one of the hangers 9a. The door body 4 (4 ') is guided and moved in an arc shape. The drive device including the door roller mechanism 9, the timing belt 10 and the door engine 11 is mounted on the outer peripheral portion of the mounting member 7 on the outdoor side and on the inner peripheral portion of the member 7 on the indoor side. There is. 18 is a controller for controlling all the door bodies.

Further, in addition to the layout as described above, in this device 1, the pair of doors 4 and 4 on the outdoor side are on the outer peripheral side of the partition walls 2 and 2, and the doors 4'and 4'on the indoor side are the partition walls. 2 ',
It is arranged on the inner peripheral side of 2 '. In other words, all the door bodies are uniformly offset to the outdoor side with respect to the corresponding door pockets.

As the timing belt 10, a total of four timing belts 10 ... 10 corresponding to four door bodies 4 and 4 (4 ', 4') are used.
Is a bracket 1 located above the center of the door opening / closing path
It is wound between the center pulley 13 held by 2 and the side pulley 14 located above the end of the door 4 (4 ') on the drawing side. The bracket 12 (see FIG. 2) holds a pair of gears 15, 15 coaxially fixed to the pair of center pulleys 13, 13 and both gears 15, 15 mesh with each other. Accordingly, the pair of timing belts 10 and 10 are provided by the door engine 11 provided on each of the indoor side and the outdoor side.
Are driven simultaneously. Further, the distance between the pair of center pulleys 13, 13 is such that the belts 10, 10 are wound around the pulleys 13, 13 respectively.
The dimension L1 between the outer peripheral surfaces of 0 and 10 is determined from the dimension of the teeth engraved on the peripheral surface of the center pulley 13 or the tooth of the belt 10 having the same specifications as the tooth root from the root to the tip of the tooth (total tooth clearance). Is set so as to be small, and due to this, consideration is given to prevent misalignment of the meshing between the belt 10 and the pulley 13, that is, a tooth skipping phenomenon.

Further, a plurality of guide roller brackets 16 ... 16 are fixed to the mounting member 7, and two guide rollers 1 are held by the brackets 16 ... 16, respectively.
The timing belt 10 is movable by 6a and 16b (see FIG. 2 (a)) while being stretched in an arc shape. The two guide rollers 16a, 1
Of the rollers 6b, one roller 16a is the timing belt 1
It is a toothless roller because it comes into contact with the opposite tooth side of 0,
The other roller 16b is a toothed roller because it abuts on the tooth side of the timing bell 10.

On the other hand, each of the door bodies 4, 4, 4'and 4'is not only operated as a sliding door as described above, but also horizontally rotated about the opening side end (drawing side end) as a rotation center. Each door roller mechanism 9 ... 9 is connected so that it can also operate as a hinged door.

That is, the closing direction side end of each door body 4 (4 ′) is connected to the suspension frame body 9 c of the door roller mechanism 9 via the door holder 20 (details will be described later). Hanging frame body 9 to which the end of the door body 4 (4 ') corresponds
The edge is easily cut off with respect to a.
On the other hand, the opening side end of each door 4 (4 ') is fixed to the rotary shaft 30 rotatably held by the corresponding suspension frame 9c, and the door closing direction side end. When the portion is cut off from the hanging frame 9c, each door body 4 (4 ') is rotated by the rotary shaft 3
It is configured to horizontally turn toward the outdoor side with 0 as the center of rotation.

As shown in FIGS. 3 and 4, the door holder 20 has a columnar projection 22 having an annular V-shaped groove 22a fixedly mounted on a bracket 21 fixed to the upper portion of the door body 4 (4 '). A pair of cylinder members 25, 25 in which a compression coil spring for urging the spherical engaging claws 24, 24 is embedded are screwed to the perforated member 23 fixed to the lower end of the suspension frame 9c, and the projection 22 is attached. This is a configuration in which the hole 26 of the perforated member 23 is inserted so as to be able to be fitted and removed. When the door body 4 (4 ') is operated as a sliding door, the projection 22 is pushed into the hole 26 of the perforated member 23 so that the spherical engagement claw 24 is formed in the V groove 22a of the projection 22. When the door body 4 (4 ') and the hanging frame body 9c are securely engaged with each other by engaging with the door body 4 (4'), the door body 4 (4 ') is pressed to the outdoor side when it is operated as a hinged door. As a result, the engagement between the V-shaped groove 22a of the projection 22 and the spherical engagement claws 24, 24 is released, and the projection 22 is fixed to the hole 2
The door body 4 (4 ') and the suspension frame body 9c are cut off from each other (see FIG. 5). The door body 4 (4 ')
When the door operates as a hinged door, horizontal rotation is performed around the rotation shaft 30 described above, so that the protrusion 22
At the moment when is removed from the hole 26 of the perforated member 23, the moving direction of the protrusion 22 is a direction orthogonal to the straight line L2 connecting the rotating shaft 30 and the protrusion 22. Therefore, as shown in FIG. 5, the bracket 21 and the projection 2 are arranged so that the axis of the projection 22 is in a direction orthogonal to the straight line L2.
2 is attached to the door body 4 (4 ').

On the other hand, when the door body 4 (4 ') operates as an open door as described above, the rotary shaft 30 is provided above and below the end of the door body 4 (4') in the opening direction. Door body 4 (4 ') by surely supporting it in place
An upper rotary shaft support mechanism 40 and a lower rotary shaft support mechanism 50 are provided to prevent the end portion (free end) on the closing direction side from sagging due to its own weight.

In the upper rotary shaft support mechanism 40, a fitting member 41a whose lower end is an inclined surface 41c shown in FIG.
Plunger 41 fixed to a screw member 41b having
7, a cam member 42 formed by integrally fixing a tubular member 42a having an inclined surface 42c at the upper end to the fitted member 42b, and a recess 4 extending over the rail 8 at the upper end shown in FIG.
3a, 43a, and a shoe 43b, 43 made of rubber or the like, which has a hole 43c through which the screw member 41b penetrates and is abutted and separated from the lower surface of the rail 8.
and a pressing body 43 having b. And
As shown in FIG. 9, the pressing member 43 is attached to the upper portion of the plunger 41 with the rubber member 45 interposed between the fitting member 41a and the flange portion 41d, and the fitting member 41a of the plunger 41 is attached to the cam body 42. In the state where the cam member 42 and the suspension frame member 9c are rotatably fitted and held in the member 42b to be fitted.
The rotary shaft 30 which is rotatably held by the bolt is fixed with a bolt 44. In this case, the rotating shaft 30 and the door body 4
When (4 ') is not rotating, that is, when it is operating as a sliding door, as shown in FIG.
Since the cam 43 and the inclined surface 42c of the cam body 42 are in close contact with each other, the shoe 43b of the pressing body 43 and the rail 8 are separated from each other by a predetermined dimension, and the door body 4 (4 ') is rotated. When the cam body 42 rotates, the contact state of the inclined surfaces 41c, 42c changes, and the plunger 41
Moves upward, whereby the shoe 43b comes into contact with the rail 8 and the upper portion of the rotary shaft 30 is supported at a predetermined position.

In the lower rotary shaft support mechanism 50, the tubular member 51a whose lower end is an inclined surface 51d shown in FIG.
1b and the fitted member 51b is attached to the bracket 51.
a cam body 51 integrally welded to c, a fitting member 52a having an inclined surface 52e at the upper end shown in FIG. 11 is fixed to a screw member 52b, a retainer 52c is provided at an upper portion, and a flange portion 52d is provided at a lower portion. It has a plunger 52 and a pressing body 53 having a through hole 53a formed in the upper surface shown in FIG. As shown in FIG. 13, the fitting member 52a of the plunger 52 is rotatably held in the fitted member 51b of the cam body 51, and the screw member 52b of the plunger 52 is inserted into the through hole of the pressing body 53. 53a on the collar 52
While being loosely inserted above d, the upper surface of the fitted member 51b of the cam body 51 and the retainer 52c of the plunger 52.
A first spring 54 having a small spring constant and a second spring 55 having a large spring constant between the lower surface of the fitting member 52a and the upper surface of the pressing body 53 of the plunger 52. The bracket 51c of the cam body 51 and the door body 4 (4 ') are fixed with bolts 56, 56. The pressing body 53 is loosely fitted in a groove-shaped rail 57 formed on the floor along the lower end of the partition wall 2 (2 '). In this case, the rotary shaft 3
0 and the door body 4 (4 ') are not rotated, the inclined surface 52e of the plunger 52 and the inclined surface 51d of the cam body 51 are in close contact with each other as shown in FIG. The pressing body 53 is separated from the pressing body 53 by a predetermined dimension, and the cam body 51 is rotated as the door body 4 (4 ') rotates.
By rotating, the plunger 52 moves downward while compressing and contracting the first spring 51, whereby the pressing body 53 comes into contact with the bottom surface 57a of the groove-shaped rail 57 and the rotary shaft 30 is supported therebelow. When the door body 4 (4 ') further rotates from such a state, the plunger 52 moves downward while compressing and contracting the second spring 55, and accordingly, the upper wall 53b of the pressing body 53 and the plunger. The flange portion 52d of 52 is separated. At this time, the pressing body 53
Is the bottom surface 57 of the groove-shaped rail 57 by the second spring 55.
The state of being in contact with a is maintained.

By the way, in the circular door opening / closing device 1, human body detection switches are arranged respectively in front of and behind the outdoor entrance / exit 3 and in front of and behind the indoor entrance / exit 3'as shown in FIG. Each door body 4 (4 ') is automatically opened as a sliding door when a person entering or leaving the room enters the range. However, as described above, the person is the door body 4 (4').
When the door holder 20 is pressed to the outside to cut the edge of the door holder 20, the function of opening the sliding door is stopped. The switching control between the case where the door body 4 (4 ') is operated as a sliding door and the case where it is operated as a swing door is performed by the following means.

That is, as shown in FIG. 14, the side surface 4b of the frame 4a (indoor side) at the end of the door body 4 (4 ') in the closing direction is located in the upper portion of the frame 2a at one end of the partition wall 2 (2'). A photoelectric switch 60 that always points to the side) is attached, and a control device 61 that controls the drive of the door engine 11 based on an output signal from the photoelectric switch 60 is provided in the controller 18 in the blind 6. It is equipped. The photoelectric switch 60 includes a light projecting unit that projects near-infrared modulated light,
And a light receiving portion for receiving the light emitted from the light projecting portion and reflected by the side surface 4b of the door body frame 4a, and the door body 4 (4 ') is operable as a sliding door as shown in the figure. At one time, the light emitting unit is attached with a predetermined direction so that the light emitted from the light projecting unit can be received by the light receiving unit. Furthermore,
The photoelectric switch 60 is always provided on the side surface 4 of the frame 4a beside the door body 4 (4 ') even if the door body 4 (4') is operated as a sliding door.
It is attached to the vertical frame 2a of the partition wall 2 (2 ') so as to point to b. The control device 61 is roughly composed of a detection unit 62 and a control unit 63 as shown in FIG. 15, and the detection unit 62 is a light projecting element provided in the light projecting unit of the photoelectric switch 60. An oscillation circuit 65 for transmitting a desired electric signal to 64, a light receiving circuit 67 for converting light received via a light receiving element 66 provided in the light receiving portion of the photoelectric switch 60 into an electric signal, and this conversion From the detection circuit 69, an amplification circuit 68 that amplifies the generated signal, a detection circuit 69 that receives the signal from the amplification circuit 68, and extracts only an electric signal corresponding to the light emitted from the light projecting element 64, and the detection wave circuit 69. And an output circuit 70 having a switch 70a that is turned on and off based on the signal of. The switch 70a of the output circuit 70 is in the ON state while the light emitted from the light projecting element 64 and reflected by the side surface 4b of the door frame 4a is received by the light receiving element 66. On the other hand, the control unit 63 has a reset circuit 72 to which a signal from the output circuit 70 of the detection unit 62 is input via the photocoupler 71, and a reset terminal that is HIGH or LOW based on the signal from the reset circuit 72. And a signal a from the human body detection switch described above is input to the CPU 73, and
The PU 73 outputs an open signal b and a close signal c for opening and closing the door body 4 (4 ') as a sliding door by driving the door engine 11. In the figure, 74 and 74 respectively indicate pull-up resistors, and 75 indicates a capacitor for preventing chattering.

When each door body 4 (4 ') is operated as a sliding door, that is, when the switch 70a of the output circuit 70 is in the ON state, a signal indicating this is input to the reset circuit 72 via the photocoupler 71. At the same time, the reset terminal of the CPU 73 is pulled up to HIGH by the signal from the reset circuit 72, and the CPU 73 becomes operable. Under such a state, the CPU 73 outputs the open signal b or the closed signal c based on the signal a from the human body detection switch indicating whether the person entering or leaving the room has entered the human body detection range.

On the other hand, each door body 4 (4 ') serves as a hinged door and the rotary shaft
When horizontally swiveled through the door, the side surface 4b of the door frame 4a
Is emitted from the initial state, the light emitted from the light projecting element 64 is not received by the light receiving element 66, and accordingly, the switch 70a of the output circuit 70 is
Turns off. Therefore, a predetermined signal is not input to the reset circuit 72, the reset terminal of the CPU 73 becomes LOW, and the CPU 73 is reset accordingly. While the CPU 73 is in the reset state as described above, even if the signal a indicating that the person entering / leaving the room enters the human body detection range is input to the CPU 73,
The open signal b and the close signal c are not output from the CPU 73,
The automatic opening / closing operation of the door body 4 (4 ') is blocked. In this way, when each door 4 (4 ') operates as a hinged door, the function as a sliding door is stopped.

As described above, in the circular door opening / closing device 1, all the door bodies 4 (4 ') are arranged offset to the outdoor side with respect to the corresponding partition wall 2 (2') and via the rotary shaft 30. By being horizontally turnable toward the outdoor side, the following actions can be performed.

That is, in the event of an unexpected situation such as a fire or an earthquake,
As shown in FIG. 16, first, the denounced person is the indoor side entrance 3 '.
The pair of door bodies 4 ', 4'disposed in the direction of the arrow is pushed toward the outside as shown by the arrow X. At this time, a packing material is used to keep the airtightness at the close contact end portions of the door bodies 4'and 4 ', so that when the door starts to open, it is in a close contact state due to the contraction of the packing material. But it begins to open easily. Then, both door bodies 4 ', 4'are opened as swinging doors via the rotary shafts 30, 30, and both stoppers 8'are opened as indicated by reference numeral (V) or reference numeral (V') in FIG.
Contact with 0,80. Then, in this state, the evacuee passes through the indoor side entrance / exit 3'to enter the windbreak chamber 5, and then opens the pair of door bodies 4 and 4 arranged in the outdoor side entrance / exit 3. , By pushing toward the outdoor side as indicated by the arrow Y, the stoppers 81, 81 are brought into contact with the stoppers 81 and 81 as indicated by the reference numeral (W) or the reference numeral (W ′), and the outdoor passage 3 is passed to the outside. To leave. Needless to say, even when the device 1 does not operate as an automatic door due to a power outage or the like, the doors 4 (4 ') work well as an open door.

Further, as described above, the end portion of each door body 4 (4 ') in the closing direction is easily separated from the suspension frame body 9c by the function of the door holder 20, and the rotary shaft 30 has the upper rotary shaft support mechanism 40 and the lower rotary shaft. Since the operation as the sliding door is stopped by the operation of the support mechanism 50 and the operation of the control device 61, the opening movement of the door body 4 (4 ′) to the outdoor side is favorably performed. Since the door body 4 (4 ') does not open or close as a sliding door, it is performed safely.

Incidentally, in the above embodiment, the wind removing chamber is a substantially circular shape in plan view, but the present invention is not limited to this, for example, the wind removing chamber is a cocoon shape or a long shape in plan view. The same can be applied to a circular shape.

〔The invention's effect〕

As described above, according to the present invention, the circular door opening and closing device that normally operates as a sliding door is provided with a means that can be operated as an opening door, and all the doors are opened toward the outside, that is, the evacuees are evacuated. Since the door is opened in the direction of opening, the door is opened only by pressing the door in the direction in which the accused person evacuates, and the door can quickly and smoothly pass through the door.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view showing the overall structure of a circular door opening / closing device, and FIG. 2 is a partially cutaway enlarged front view showing the structure around a center pulley provided in this device. FIG. 2 (a) is an enlarged side view showing the structure of a guide roller provided in this apparatus, and FIG. 3 is an enlarged longitudinal side view showing the structure of a door holder provided in this apparatus.
FIG. 4 is an enlarged vertical sectional front view of an essential part taken along line IV-IV in FIG. 3, and FIG. 5 is a view in the direction of arrows VV in FIG.
Each of the figures is a perspective view showing a plunger, a cam body, and a pressing body, which are components of an upper rotary shaft support mechanism provided in this device, and FIG. 9 is an enlarged vertical sectional front view of a main part showing the structure of the upper rotary shaft support mechanism. 10, 11, and 12, respectively, are perspective views showing a cam body, a plunger, and a pressing body, which are components of a lower rotary shaft support mechanism provided in this apparatus, and FIG. 13 shows a structure of the lower rotary shaft support mechanism. Enlarged vertical sectional front view showing the first part
FIG. 4 is a control system diagram of the circular door opening / closing device, FIG. 15 is a circuit diagram showing the configuration of the control device, FIG. 16 is a schematic plan view of the circular door opening / closing device showing the action, and FIG. 17 is a schematic diagram showing a conventional example. It is a top view. 1 ... Circular door opening / closing device, 2, 2 '... Partition wall, 3,
3 '... doorway, 4, 4' ... door body, 9 ... door mechanism,
9c ... Hanging frame, 30 ... Rotating shaft

Claims (1)

[Claims] 1. At least a pair of partition walls, a pair of door bodies arranged in an entrance / exit formed between these partition walls and curved in an arc shape, and capable of running in the forward and reverse directions supporting these door bodies. And a pair of door roller mechanisms, and a circular door opening / closing device including a drive device for driving each door body so as to draw or approach each other in an arc shape along the doorway, However, it is uniformly offset and arranged only on the outdoor side with respect to each corresponding partition wall, and is horizontal in the offset direction via the rotary shaft fixed to the end on the draw side of each door. A circular door opening / closing device, which is connected to each corresponding door roller mechanism so as to be able to turn.