JPH0666064A - Automatic door - Google Patents

Abstract

PURPOSE:To provide an automatic door in compact configuration, with no emission of noise at opening and shutting, and equipped with high safety and facilitate automation of an existing door. CONSTITUTION:A door 12 is made of a non-magnetic conductive material such as aluminum. A unitized magnetic induction motor unit 14 is installed on a frame 11. The motor unit 14 is equipped with a cylindrical magnet 31 in which N-poles and S-poles are arranged alternately. When this magnet 31 rotates, a horizontal thrust force F is generated in the door 12 due to the magnetic interaction with the magnet 31 in accordance with the law of electromagnetic induction. With this thrust force F the door 12 moves left on the guide rail 13, and thereby the opening 11a opens. The magnet 31 rotates reversely, and the door 12 moves right and the opening 11a shuts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door provided at a doorway or a window of a building.

[0002]

2. Description of the Related Art Generally, doors such as doorways and windows of buildings have a sliding door type, an opening type, a revolving type, and some of them are automated in hotels and stores. .

[0003]

However, the conventional automatic door opens and closes the door by a mechanical means such as a gear. Therefore, the entire structure becomes large and the door is in contact with the rail or the like. There was a problem that noise was generated because it moved in. Further, there is a problem that maintenance is complicated, such as the need for oil replacement work for gears and the like. Furthermore, since the door is mechanically forcibly moved, if there is a collision while trying to come in and out while the door is closed, there is a problem in safety, and especially an infant or an elderly person may be injured. Further, the conventional mechanical means has a problem that the operation is difficult when a general door is newly automated.

The present invention has been made in view of the above problems, and an object thereof is a compact structure, no noise at the time of opening and closing, excellent safety, and easy automation of general doors. It is to provide an automatic door that can.

[0005]

An automatic door according to claim 1 is formed of a frame body having an opening and a conductive non-magnetic material such as aluminum (Al) or copper (Cu). A movable door that opens and closes, a cylindrical magnet that is attached to the frame body, has N poles and S poles alternately arranged, and is rotatably supported, and a drive unit that rotates the magnet. And a moving door driving unit that opens and closes the moving door by generating a propulsive force by magnetic induction in cooperation with the moving door.

In this automatic door, when the magnet of the moving door driving means on the side of the frame is driven, the moving door formed of a conductive non-magnetic material follows the law of electromagnetic induction and is magnetized to the magnet. Propulsive force is generated by dynamic interaction,
The moving door is moved by this propulsive force, so that the opening on the frame body side is opened and closed.

According to another aspect of the present invention, an automatic door has a frame body having an opening, a movable door formed of a non-conductive material for opening and closing the opening, and a conductive door attached to the movable door. A non-magnetic member, a cylindrical magnet that is attached to the frame body, has N poles and S poles alternately arranged, and is rotatably supported, and a driving unit that rotates the magnet. And a moving door driving means for opening and closing the moving door by generating a propulsive force by magnetic induction in cooperation with a magnetic member.

In this automatic door, when the magnet of the moving door driving means on the frame side is driven, a propulsive force is generated in the conductive non-magnetic member attached to the moving door side, and the moving door is moved by this propulsive force. Then, the opening and closing of the opening portion on the frame body side is thereby performed.

Further, the moving door according to claim 3 is formed of a conductive non-magnetic material and has a frame body having an opening, and a moving door for opening and closing the opening of the frame body.
It has a cylindrical magnet that is attached to the movable door, has N poles and S poles alternately arranged, and is rotatably supported, and a drive means for rotating the magnet, and cooperates with the frame body. And a moving door driving means for opening and closing the moving door by generating a propulsive force by magnetic induction.

In this moving door, when the magnet of the moving door driving means on the moving door side is driven, a propulsive force due to magnetic interaction with the magnet is generated in the frame according to the law of electromagnetic induction, As a result, the moving door moves, and the opening and closing of the opening is thereby performed.

An automatic door according to a fourth aspect of the present invention is formed of a non-conductive material and has a frame body having an opening, a movable door for opening and closing the opening of the frame body, and the movable door. A cylindrical shape in which a conductive non-magnetic member attached to the frame corresponding to a moving range and an N pole and an S pole are alternately arranged while being attached to the moving door and rotatably supported. And a moving door driving means for opening and closing the moving door by generating a propulsive force by magnetic induction in cooperation with the non-magnetic member on the frame body side. There is.

In this moving door, when the magnet of the moving door driving means on the moving door side is driven, the conductive non-magnetic member attached to the frame body follows the law of electromagnetic induction according to the law of electromagnetic induction. Propulsive force due to magnetic interaction occurs,
As a result, the movable door moves to open and close the opening.

In each of the automatic doors according to the first to fourth aspects, as a moving door driving means, a cylindrical magnet having N poles and S poles alternately arranged and rotatably supported, and the magnet are rotated. Since a magnetic induction motor consisting of driving means is used, the structure is compact,
In addition, since the moving door is opened and closed in a non-contact state with the frame, no mechanical frictional force is generated, and therefore the above noise is not generated and safety is excellent. Further, since this magnetic induction motor can be easily unitized, the unit can be attached to an existing door to facilitate automation.

The automatic door according to any one of claims 1 to 4 is a sliding door type in which the movable door linearly moves in parallel to the frame body, and the movable door rotates about one side with respect to the frame body. It includes both an open door type that moves dynamically and a rotary door type that the movable door rotates around its center as a fulcrum.

[0015]

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

1 and 2 show the construction of a sliding door type automatic door according to a first embodiment of the present invention.

The automatic door of this embodiment is provided on a wall surface of a store, for example, and has a frame 11 having an opening 11a serving as an entrance and exit, and a movable member having a size corresponding to the opening 11a of the frame 11. It is constituted by the door 12. The movable door 12 is linearly reciprocally movable along a guide rail 13 provided on the lower portion of the frame body 11, whereby the opening 11a is opened and closed.

The movable door 12 is made of a conductive non-magnetic material such as aluminum (Al). on the other hand,
A magnetic induction motor unit 14 as a moving door driving unit is attached to the frame body 11 so as to face an upper end corner portion on the moving direction side (left side in the drawing) of the moving door 12.

FIG. 21 shows this magnetic induction motor unit 1.
4 shows a specific configuration and operation principle of No. 4. The magnetic induction motor unit 14 is composed of a magnet 31 as an induction current generating means and a motor 32 as a driving means of the magnet 31. The magnet 31 has N poles 31a and S poles 31b alternately arranged in a cylindrical shape, and is rotatably supported by a shaft (not shown). The motor 32 may be a direct current motor or an alternating current motor, and receives the supply of current from a power supply circuit (not shown) to rotate the magnet 31. When this magnet 31 rotates, for example, in the clockwise direction in the figure, the magnetic flux density interlinking with the reaction plates 33 arranged facing each other changes, and the reaction plates 33
An induced current (eddy current) I _e is generated at. As a result, the reaction plate 33 follows the law of electromagnetic induction,
Propulsive force F due to magnetic interaction with magnet 31
And the reaction plate 3 is generated by this propulsive force F.
3 moves. The movement direction of the reaction plate 33 can be controlled by switching the rotation direction of the motor 32 and the rotation direction of the magnet 31 under the control of a control circuit (not shown). In addition to the propulsive force F, the reaction plate 33 also has the propulsive force F.
Since a levitation force is generated in a direction orthogonal to, when the reaction plate 33 is arranged above the magnetic induction motor unit 14, the reaction plate 33 can be moved in a levitated state.

The drive means for the magnet 31 is shown in FIG.
Not only the motor 32 shown in FIG. 1, but the stator coil 34 is fixed to the inner peripheral portion of the magnet 31 as shown in FIG.
The magnet 31 may be rotated by supplying an alternating current to the stator coil 34.

23 and 24 show a more specific structure of the magnetic induction motor unit 14 having the structure shown in FIG. FIG. 24 shows a cross sectional structure taken along line AA of FIG. The magnet 31 is supported by a magnet support 35, and the magnet support 35 is rotatably supported by a bearing 36. The stator coil 34 is fixed to the central shaft 37 at the inner peripheral portion of the magnet 31. The DC power supplied to the stator coil 34 via the lead wire 38 is supplied after being converted into AC by the mechanical rectification unit 39. Both the stator coil 34 and the magnet 31 are case 4
It is housed in 0, and the fixed base 41 together with this case 40.
It can be fixed in place by.

Returning to FIG. 1 and FIG. 2 and continuing the explanation,
In the automatic door of this embodiment, the movable door 12 corresponds to the above reaction plate 33. That is, when the magnet 31 rotates, the moving door 12 is formed of a conductive non-magnetic material. Therefore, according to the law of electromagnetic induction, the moving door 12 has a horizontal direction due to a magnetic interaction with the magnet 31. Propulsive force F of is generated. Due to this propulsive force F, the moving door 12 moves on the guide rail 13 in the left direction in the figure, thereby opening the opening 11a. Further, when the magnet 31 rotates in the reverse direction, the movable door 12 moves to the right and the opening 11a is closed.

As described above, in the automatic door of this embodiment, since the magnetic induction motor unit 14 having the cylindrical magnet 31 is used as the moving door driving means, it is easy to unitize and the structure is compact. . Therefore,
Automation can be easily realized by mounting it on an existing general door.

Further, since the moving door 12 is opened and closed in a non-contact state with respect to the frame body 11, the moving door 12 can be moved smoothly and there is no noise. Maintenance is easy because no work is required. Furthermore, since the torque is non-contact and the torque is constant, even if the vehicle hits an infant or the like while the moving door 12 is opened and closed, no injury is caused and safety is excellent.

In the above embodiment, the case where the entire movable door 12 is made of a conductive non-magnetic material (aluminum) has been described, but as shown in FIGS. 3 and 4,
The moving door 12 may be made of a non-conductive material such as wood. In this case, the aluminum plate 15 having a length corresponding to the moving distance of the moving door 12 needs to be attached to the upper part of the moving door 12 so as to face the magnetic induction motor unit 14. In the following description, the same components as those in the above embodiment will be designated by the same reference numerals and the description thereof will be omitted.

In the automatic door of this embodiment, the magnet 31 of the magnetic induction motor unit 14 attached to the frame 11 is used.
When is rotated, a propulsive force F due to a magnetic interaction is generated between the aluminum plate 15 and the magnet 31 according to the law of electromagnetic induction. Due to this propulsive force F, the movable plate 12 moves on the guide rail 13 together with the aluminum plate 15 into the frame body 1.
It moves in a non-contact manner with respect to 1, thereby opening and closing the opening 11a. The effect is similar to that of the above embodiment.

In the embodiment shown in FIGS. 1 and 2, the outer peripheral portion of the magnet 31 is arranged to face the side surface portion of the movable door 12, which is as shown in FIGS. 5 and 6. The magnetic induction motor unit 14 is attached to the frame body 2
It may be configured such that the individual outer peripheral portions face the upper surface portion of the moving door 12. With such a configuration, the projecting space of the magnetic induction motor unit 14 from the frame body 11 becomes small. Also in the embodiment shown in FIGS. 3 and 4, the aluminum plate 15 is attached to the upper end surface of the moving plate 12, and the two magnetic induction motor units 14 are opposed to the aluminum plate 15. Is also the same.

In the first embodiment shown in FIGS. 1 to 6, the magnetic induction motor unit 14 is attached to the frame body 11 so as to face the upper position of the moving door 12.
As a second embodiment, as shown in FIGS. 7 to 12, it may be attached so as to face the lower position of the movable door 12.

In FIGS. 7 and 8, the unitized magnetic induction motor unit 14 is attached to the frame body 11 so as to face the left end of the lower part of the moving door 12 made of aluminum (Al) in the drawings. Is.

Further, in FIGS. 9 and 10, the aluminum plate 1 is horizontally placed at the lower position of the non-conductive moving door 12.
5 is attached to the aluminum plate 1
5 to face the magnetic induction motor unit 14 to the frame 11
It is attached to.

Further, in FIGS. 11 and 12, three magnetic induction motor units 14 are provided at the lower position of the guide rail 13 of the frame body 11 so as to face the central portion and both end portions of the movable door 12 made of aluminum. 3 are arranged, and the outer peripheral portion of each of them is arranged to face the lower end surface of the moving door 12. With such a configuration, the moving door 12 is moved by the horizontal propulsive force F, but at this time, since the moving door 12 is further acted on by the floating force U, the movement is performed more smoothly. .

In the second embodiment shown in FIGS. 7 to 12, the structure is compact as in the first embodiment,
Automation can be easily realized by attaching to a conventional general door. Further, since the moving door 12 is opened and closed in a non-contact state with the frame body 11, there is no noise, maintenance is easy, and safety is excellent.

13 and 14 show the construction of an automatic door of the open type according to the third embodiment of the present invention.

The automatic door of this embodiment is composed of a frame body 21 having an opening 21a serving as a doorway and a moving door 22 having a size corresponding to the opening 21a of the frame body 21. . The movable door 22 has a shaft 23 provided on the right side of the drawing as a center, and a fixed angle (90 in this embodiment) upward from the closed position shown by the solid line in FIG.
The rotation of the opening 11a allows the opening 11a to be opened and closed.

The moving door 22 is made of, for example, wood, aluminum or the like, and the moving door 2 is provided at the upper end thereof.
One end portion of the support arm 24 is fixed so as to be orthogonal to the surface of 2. An arcuate aluminum plate 25 is provided between the other end of the support arm 24 and the intermediate part of the movable door 22.
Are connected by. On the other hand, the moving door 1 is attached to the frame body 11.
The unitized magnetic induction motor unit 14 is attached to a position facing the aluminum plate 25 on the upper part of the second plate 2. The aluminum plate 25 moves directly below the magnet 31 of the magnetic induction motor unit 14 and the moving door. 22 is configured to rotate about a shaft portion 23.

In the automatic door of this embodiment, when the handle 22a of the moving door 22 is turned and the magnet 31 is rotated, the magnet 31 is moved to the aluminum plate 25 according to the law of electromagnetic induction.
A propulsive force F due to magnetic interaction is generated between and. This propulsive force F causes the movable door 12 to rotate about the shaft portion 23 as a fulcrum, whereby the opening 21a is opened and closed.

Like the first embodiment, the automatic door of this embodiment has a compact structure and can be easily automated by mounting it on an existing door. Because it opens and closes in a non-contact state,
No noise and easy maintenance. In addition, since it is non-contact and has a constant torque, it is also excellent in safety.

In the above-mentioned first to third embodiments,
In both cases, the magnetic induction motor unit 14 is attached to the frames 11 and 21.
On the other hand, while the movable doors 12 and 22 are made of a conductive non-magnetic material, or the aluminum plate 15,
Although 25 is attached, the magnetic induction motor unit 14 may be attached to the moving door 12 side, as shown in FIGS. 15 and 16. In FIG. 15, the frame body 12 is formed of a conductive non-magnetic member, and in FIG. 16, an aluminum plate 15 is attached to the frame body 12.

17 and 18 also show the structure of an automatic door of the open type. This automatic door has the magnetic induction motor unit 14 attached to the moving door 22 side. The magnetic induction motor unit 14 has a width of the moving door 22 of approximately 2
It is fixed to the tip of the link member 26 having a length of one-half. The base end portion of the link member 26 is rotatable around a shaft portion 27 provided at the center of the upper end of the moving door 22.
On the other hand, an aluminum plate 28 is attached to the frame body 21 in parallel with the upper end surface of the moving door 22, and the magnet 3 of the magnetic induction motor unit 14 is attached to the aluminum plate 28.
1 is facing. The aluminum plate 28 has a width corresponding to the thickness of the magnet 31 and a length corresponding to the width of the moving door 22.

In the automatic door of this embodiment, when the handle 22a is turned and the magnet 31 is rotated at the closed position shown in FIG. 17, the aluminum plate 28 on the frame 21 side is moved to the magnet 31 according to the law of electromagnetic induction. A propulsive force F due to magnetic interaction is generated between them, and the propulsive force F causes the magnetic induction motor unit 14 to move rightward in the figure along the aluminum plate 28, that is, the link member 26 uses the shaft portion 27 as a fulcrum. In the figure, it tries to rotate in the clockwise direction. Along with the rotation of the link member 26, an urging force acts on the moving door 22 in the counterclockwise direction in FIG. 15, and as a result, the moving door 22 rotates about the shaft portion 23 and the opening 2
1a is released. Also, from this state, the magnet 31
When the rotor rotates in the reverse direction, a propulsive force in the opposite direction to the above is generated in the aluminum plate 28, and as a result, the magnetic induction motor unit 14
Moves leftward in the figure along the aluminum plate 28, that is, the link member 28 tries to rotate counterclockwise in the figure with the shaft portion 27 as a fulcrum. At this time, a biasing force acts on the moving door 22 in a clockwise direction, and as a result, the moving door 22 rotates about the shaft portion 23.

In the automatic door of this embodiment, the magnetic induction motor unit 14 is attached to the movable door 22 together with the link mechanism, and the aluminum plate 28 is simply attached to the frame body 21 side. Is easier and has a more compact structure. Others have the same effects as those of the above embodiment.

19 and 20 show the structure of a rotary automatic door according to the fourth embodiment of the present invention. In this embodiment, the magnetic induction motor unit 14 is attached to the frame 21 side, and a donut-shaped aluminum plate 30 is attached to the upper surface of the rotary movable door 29 so as to face the magnetic induction motor unit 14. ing.
The handle 29a of the moving door 29 is provided with an automatic opening switch 29c, and when the switch 29c is turned on, the magnetic induction motor unit 14 is driven. A sensor may be used instead of the automatic opening switch 29c.

In the automatic door of this embodiment, when the automatic opening switch 29c is turned on, the moving door 29 is rotated by the rotation of the magnet 31 of the magnetic induction motor unit 14 so as to move the central shaft 29b.
The opening 21a is automatically opened and closed to open and close the opening 21a. If the automatic opening switch 29c is not turned on,
By pushing the moving door 29 by hand, it rotates as usual.

With this automatic door, when it is desired to turn the moving door 29 quickly, the automatic opening switch 29c is turned on, and the grip 29a is strongly pressed, so that the rotation can be performed in accordance with it. Other effects are the same as those of the above-mentioned embodiment. In this embodiment also, the magnetic induction motor unit 1
4 may be attached to the frame 21 at the lower position of the moving door 29.

FIG. 25 shows a circuit configuration for realizing the switching operation between the automatic mode and the manual mode in the above embodiment. That is, the positive terminal of the DC power supply 50 and the motor 3
A changeover switch 51 for automatic / manual changeover is provided between the terminal 2 and one of the two terminals, and a DC power source 5
An automatic opening switch 29c is provided between the negative terminal of 0 and the other terminal of the motor 32. In this circuit,
When either the changeover switch 51 or the automatic opening switch 29c is in the off state, the motor 32 is not supplied with power, so that the magnetic induction motor unit 14 does not operate and is manually opened and closed. When both the changeover switch 51 and the automatic opening switch 29c are turned on, the magnetic induction motor unit 14 automatically opens and closes as described above. The moving door 29 must be provided with an automatic return means 52 such as a spring so that the moving door 29 can be returned to a predetermined position during manual operation.

The present invention has been described with reference to the examples.
The present invention is not limited to the above-described embodiments, but can be variously modified without departing from the scope of the invention. For example,
In the above embodiment, an example in which the present invention is applied to a door of a building entrance and exit has been described, but it goes without saying that the present invention can also be applied to a door for a window.

[0047]

As described above, according to the automatic doors of the first to fourth aspects, the N pole and the S pole are used as the moving door driving means.
Since a magnetic induction motor comprising a cylindrical magnet having poles alternately arranged and a drive means for rotating the magnet is used, the structure is compact, and mechanical frictional force is not generated and no noise is generated. Further, it is excellent in safety, and has an effect that it can be easily automated by attaching it to an existing door.

[Brief description of drawings]

FIG. 1 is a plan view showing a configuration of a sliding door type automatic door according to a first embodiment of the present invention.

FIG. 2 is a front view corresponding to FIG.

FIG. 3 is a plan view showing a modification of the first embodiment of the present invention.

FIG. 4 is a front view corresponding to FIG.

FIG. 5 is a plan view showing another modification of the first embodiment of the present invention.

FIG. 6 is a front view corresponding to FIG.

FIG. 7 is a plan view showing a configuration of a sliding door type automatic door according to a second embodiment of the present invention.

FIG. 8 is a front view corresponding to FIG.

FIG. 9 is a plan view showing a modified example of the second exemplary embodiment of the present invention.

10 is a front view corresponding to FIG. 9. FIG.

FIG. 11 is a front view showing another modification of the second embodiment of the present invention.

12 is a bottom view corresponding to FIG. 11. FIG.

FIG. 13 is a plan view showing a configuration of an opening type automatic door according to a third embodiment of the present invention.

FIG. 14 is a front view corresponding to FIG.

FIG. 15 is a front view showing another modification of the first embodiment of the present invention.

FIG. 16 is a front view showing still another modification of the first embodiment of the present invention.

FIG. 17 is a plan view showing a modification of the third embodiment of the present invention.

FIG. 18 is a front view corresponding to FIG.

FIG. 19 is a plan view showing the configuration of a rotary automatic door according to a fourth embodiment of the present invention.

20 is a front view corresponding to FIG. 19. FIG.

FIG. 21 is a perspective view for explaining the operating principle of the magnetic induction motor used in the present invention.

FIG. 22 is a perspective view for explaining the operation principle of another magnetic induction motor used in the present invention.

FIG. 23 is a front view showing a specific configuration of the magnetic induction motor of FIG.

24 is a sectional view taken along the line AA of FIG.

25 is a diagram showing the configuration of an automatic / manual operation switching circuit for an automatic door according to the embodiment of FIG.

[Explanation of symbols]

 11, 21 Frame 11a, 21a Opening 12, 22 Moving door 13 Guide rail 14 Magnetic induction motor unit 15 Aluminum plate 31 Magnet 31a N pole 31b S pole 32 Motor

Claims (4)

[Claims] 1. A frame having an opening, a moving door formed of a conductive non-magnetic material for opening and closing the opening, and a frame attached to the frame and having alternating N and S poles. It has a cylindrical magnet which is arranged and rotatably supported, and a drive means for rotating the magnet, and opens and closes the moving door by generating a propulsive force by magnetic induction in cooperation with the moving door. An automatic door characterized by comprising a moving door driving means. 2. A frame body having an opening, a moving door formed of a non-conductive material for opening and closing the opening, a conductive non-magnetic member attached to the moving door, and the frame body. It has a cylindrical magnet, which is attached and has N poles and S poles alternately arranged and is rotatably supported, and a driving means for rotating the magnet, and magnetic induction in cooperation with the non-magnetic member. And a moving door driving means for opening and closing the moving door by generating a propulsive force by the automatic door. 3. A frame body which is made of a conductive non-magnetic material and has an opening, a movable door which opens and closes the opening of the frame body, and an N pole which is attached to the movable door. By alternately arranging the S poles and having a cylindrical magnet rotatably supported and a driving means for rotating the magnet, by generating a propulsive force by magnetic induction in cooperation with the frame body. An automatic door, comprising: a moving door driving means for opening and closing the moving door. 4. A frame body made of a non-conductive material and having an opening, a moving door for opening and closing the opening of the frame, and the frame body corresponding to a moving range of the moving door. A non-conductive conductive member attached to the motor and a cylindrical magnet that is attached to the moving door and has N poles and S poles alternately arranged and is rotatably supported, and a drive for rotating the magnet. An automatic door having means, and a moving door driving means for opening and closing the moving door by generating a propulsive force by magnetic induction in cooperation with the non-magnetic member on the frame body side.