JP2001059380A - Automatic door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic door which is compact and efficient in operation without using a large motor. SOLUTION: In an automatic door 1 provided with a door body 3 on a frame body 2 openable/closable by the driving force of a motor 5 started by a non- contact sensor 4, an opening/closing resistance reducing means 6 to reduce the opening/closing resistance of the door body 3 by the magnetic force is provided between the frame body 2 and the door body 3. The opening/closing resistance reducing means 6 comprises a permanent magnet 61 and an electromagnet 62, or electromagnets 62, and one of them is provided on the frame body 2 and the other is provided on the door body 3, and when the electromagnet 62 is operated, the frame body 2 is repulsive against the door body 3, or joined with the door body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door which is opened and closed by a driving force of a motor activated by a non-contact sensor or a contact switch.

[0002]

2. Description of the Related Art Conventionally, as an automatic door, there has been known an automatic door in which a door body is a sliding door. In addition to this sliding door, a door body in which a rotating slide type sliding door is provided (actual opening). Japanese Unexamined Patent Application Publication No. Sho 64-26490), and the one made as an folding door (see Japanese Utility Model Application Laid-Open No. 63-186875) have been proposed.

[0003]

However, in the case where the door body is formed as a rotary sliding type retractable door or folding door as in the prior art, the door body a is opened as shown in FIG. 10 and FIG. In this case, the door body a must be slid in the direction e along the frame d by applying a rotating force in the direction of the arrow c to the drive shaft b of the door body a. When closing the door body a, the door body a is slid in the direction g along the frame d by applying a turning force in the direction of the arrow f to the drive shaft b of the door body a. Must be moved.

Therefore, the conventional automatic door slides in the directions e and g along the frame d while the door body a is folded by the turning force of the arrows c and f with respect to the drive shaft b. Therefore, a large driving force is required, and the motor serving as the driving source is increased in size, and a large space is required. In addition, since a large motor is used, there is a disadvantage that power consumption increases.

In particular, when the door body a is a sliding door or a folding door, the door body a is moved in a direction e along the frame d.
Even if the door body a is slid and opened, the closed door body a acts like a strut, so if the door body a is not folded to some extent by the turning force in the direction of the arrow c, Sliding movement is not performed smoothly. Therefore, at the beginning of opening the door body a,
An extra load will be added. Also, when the door body a is closed, the folded door body a is completely extended only by the turning force in the direction of the arrow f to be in the closed state, so that an extra load is applied particularly at the end of closing. .

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic door that can be operated compactly and efficiently without using a large motor.

[0007]

An automatic door according to the present invention for solving the above-mentioned problems has a door body provided on a frame body,
An automatic door which is opened and closed by a driving force of a motor activated by a non-contact sensor or a contact type switch, wherein opening and closing of the door body is reduced by a magnetic force between a frame body and the door body. Means are provided. With this configuration, the driving force of the motor required to open and close the door body is reduced, and the size of the motor can be reduced.

In the above automatic door, the opening / closing reducing means comprises a permanent magnet and an electromagnet, or electromagnets,
Either one is provided on the frame and the other is provided on the door body, and the electromagnet is actuated so that the frame and the door body rebound or join. With this configuration,
The opening / closing reducing unit can repel or join the frame body and the door body with a simple circuit such as switching the direction of the current flowing to the electromagnet, and can be configured without any mechanical complexity.

Further, in the above automatic door, the opening / closing reducing means may be configured to move one of the permanent magnet provided on the frame and the permanent magnet provided on the door body to the permanent magnet of the frame. And a mechanism switch configured to repel or join the permanent magnet of the door body. With this configuration, the opening / closing reducing unit can be configured mechanically without consuming extra power.

Further, in the above automatic door, the door body may be a folding door or a rotary sliding type retractable door. Folding doors or pivoting slide-type retractable doors are designed to open and close the door body along the surface direction and to rotate and fold the door body. The door must be folded to a certain extent, and at the end of closing, the door body must be completely extended to close. Therefore, by providing an opening / closing reducing means by magnetic force in such a folding door or a rotating slide type sliding door,
The opening / closing force at the start of opening and the end of closing of the door body can be effectively assisted.

Further, the magnetic force of the opening / closing reducing means acts on at least one of a position distant from and a position close to the rotation center axis of the door body. When the magnetic force of the opening / closing reducing means is applied to a position distant from the rotation center axis of the door body, the door body can be rotated by the leverage principle even if the magnetic force is small. Further, when the magnetic force of the opening / closing reducing means is applied to a position close to the rotation center axis of the door body, even if the magnetic field is small,
The door body can be rotated.

[0012]

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

FIG. 1 schematically shows the entire structure of the automatic door 1, and FIG.

That is, in the automatic door 1, a door body 3 provided on a frame 2 is opened and closed by a driving force of a motor 5 activated by a non-contact sensor 4. Opening / closing reducing means 6 between main body 3
Is provided.

The frame 2 is framed by a vertical bar 21 and an upper bar 22 in a gate shape, and the inside thereof has an opening 20 through which a person passes.
It has been done. Inside the upper rail 22, a carriage 24 can slide on a slide rail 23 provided along the longitudinal direction of the upper rail 22.

The door body 3 is sized to close the opening 20 of the frame 2, and has a pivot shaft 31 provided at a substantially central position thereof. The rotation shaft 31 is rotatably attached to the carriage 24 in the upper rail 22 of the frame 2, whereby the door body 3 is suspended from the frame 2. On one side of the door body 3, an engagement member 33 having a long hole 32 is provided. Between the elongated hole 32 and the connecting member 25 provided in the vertical bar 21 of the frame 2,
A link 34 is provided. This door body 3 is shown in FIG.
As shown in the figure, when opening, the frame 2 slides in the direction of arrow B along the upper rail 22 while rotating in the direction of arrow A. When closing, the frame 22 slides in the direction of arrow D while rotating in the direction of arrow C along the upper rail 22.

The non-contact sensors 4 are attached to both sides of the upper crosspiece 22 of the frame 2 so as to detect a person standing in front of the frame 2. This non-contact sensor 4 includes a control device 6
Connected to 0.

The motor 5 is provided inside the upper rail 22 of the frame 2 and drives a chain 53 provided between the pulleys 51 and 52. In this chain 53,
A drive gear 26 extended from the carriage 24 is engaged. The drive gear 26 is fixed to a rotation shaft 31 of the door body 3. Therefore, when the chain 53 is driven by the motor 5, the door body 3 together with the drive gear 26 is driven.
Rotates in the direction of arrow A. Along with this, the trolley 24
The door body 3 slides on the slide rail 23 in the direction of the arrow B together with the door body 3 so that the opening of the frame 2 is opened. When the chain 5 is driven by the motor 5 in the direction opposite to the above, the door body 3 rotates in the arrow C direction together with the drive gear 26. The trolley 24 slides on the slide rail 23 in the direction of arrow D together with the door body 3 along with the door body 3.
0 is closed.

The opening / closing reducing means 6 includes a permanent magnet 61, an electromagnet 62, and a control device 6 for switching the energization of the electromagnet 62.
0. Of these, the electromagnet 62
Is provided above the allowance 21a of the vertical bar 21 of the frame 2 with the door body 3. The permanent magnet 61 is provided on the door main body 3 facing the electromagnet 62. As shown in FIG. 2B, the opening / closing reducing means 6 changes the direction of the current flowing through the electromagnet 62 by the control device 60, and as shown in FIG. 3 can be repelled in the direction of arrow E or joined in the direction of arrow F. The switching of the current flow is performed based on information of the non-contact sensor 4 input to the control device 60.

Next, the operation of the automatic door 1 will be described. First, when a person stands in front of the automatic door 1, the fact is detected by the non-contact sensor 4, and an opening operation signal is input to the control device 60. The control device 60 starts energization so that the motor 5 and the electromagnet 62 perform the opening operation. On this occasion,
The electromagnet 62 has a direction E in which the frame 2 and the door body 3 rebound.
Is energized. As a result, as shown in FIG. 2, the door body 3 is separated from the state of being joined to the frame body 2 and the link 34 is inclined and slippery, so that the bogie 24
Can slide easily without any snagging. Therefore, the door body 3 is in a state where the opening 20 of the frame 2 is opened.

When a person leaves the front of the automatic door 1, the non-contact sensor 4 does not sense the person, and the opening operation signal to the control device 60 is cut off. Control device 60 switches the energization of motor 5 and electromagnet 62 from the opening operation to the closing operation. At this time, the electromagnet 62 is energized in a direction in which the frame 2 and the door body 3 are joined. When the motor 5 is driven, the door body 3 is in a state where the opening 20 of the frame body 2 is substantially closed, and the electromagnet 62 joins the frame body 2 and the door body 3 in the substantially closed state to open the door body 3. The main body 3 is in a completely closed state.

In this embodiment, since the chain 53 and the drive gear 26 are meshed with each other, the door body 3 is provided with a rotational force in the directions A and C and a rotational force in the directions B and D.
In this case, as shown in FIG. 3, the chain 53 does not mesh with the drive gear 26, and the chain 53 is simply connected to the connecting member 27 extending from the carriage 24, as shown in FIG. May be connected. In this case, as shown in FIG.
Can only obtain the sliding movement force in the B direction and the D direction, but by moving the door body 3 in the E direction and the F direction by the opening / closing reducing means 6,
The door body 3 can be slightly rotated in the directions C and C. Thereafter, the door body 3 is opened and closed while rotating the door body 3 in the directions A and C with the sliding movement in the directions B and D. be able to. However, in this case,
The link 34 connecting the door body 3 and the frame 2 is
It must be connected to the engagement member 33 having no 2 to eliminate play, and to make it easy to convert the sliding movements in the B and D directions into rotational powers in the A and C directions.

In the present embodiment, the electromagnet 62
The vertical bar 21 of the frame 2 is provided above the allowance 21 a for the door body 3. The mounting position of the electromagnet 62 and the permanent magnet 61 opposed thereto is centered on the rotation shaft 31. The position is not particularly limited as long as it can repel and join in the E and F directions and does not buffer the opening and closing of the door body 3. For example, as shown in FIG.
2 may be provided, and a permanent magnet 61 may be provided at a position of the door main body 3 opposed thereto. In this case, since the permanent magnet 61 and the electromagnet 62 are at positions away from the rotation shaft 31, even if the magnetic force is small, the door body 3 can be easily rotated by the leverage principle. As shown in FIG. 6, a hanging wall portion 22 a provided on the upper rail 22 next to the rotating shaft 31 is provided.
, An electromagnet 62 may be provided, and a permanent magnet 61 may be provided at a position of the door body 3 facing the electromagnet 62. In this case, the permanent magnet 6
1 and the electromagnet 62 are close to the rotating shaft 31, so that when repelling and joining, the distance between the two does not increase so much. Therefore, even if the magnetic field is small, the door body 3 can be rotated. . Note that the electromagnet 62 may be provided on the door body 3 side, and the permanent magnet 61 may be provided on the frame body 2 side.

Further, in the present embodiment, the permanent magnet 61
And the electromagnet 62 are combined, and both are
It may be 2. When such an electromagnet 62 is used, repulsion and joining can be easily performed by switching the direction of current flow. Conversely, both may be permanent magnets 61. In this case, a manual door knob, a switch, or the like is provided on the vertical rail 21 of the frame 2 or the like, and the permanent magnet 61 in the vertical rail 21 is interlocked with this.
The door body 3 by moving or reversing the door.
Direction and F direction.

Further, in the present embodiment, when the non-contact sensor 4 detects a person, an opening operation signal is input to the control device 60, and when the detection is stopped, the opening operation signal is cut off. The opening / closing timing is set only by the presence or absence of the opening operation signal. The closing operation signal is input to the control device 60 by a separately provided sensor or contact switch, and the respective opening operation signal The opening and closing operation may be performed at the timing of the closing operation signal.

Further, in the present embodiment, when the opening operation signal from the non-contact sensor 4 is interrupted, the direction of energization to the electromagnet 62 is switched. The switching timing is not limited to the timing linked with the non-contact sensor 4. For example, when the non-contact sensor 4 or the contact-type switch (not shown) is activated, the electromagnet 62 is energized, and after a predetermined time has passed after the door body 3 rebounds in the E direction, the energization to the electromagnet 62 is automatically switched. No matter when the door body 3 is closed, F
It may be made so that it can be joined in any direction.
Further, the operation direction of the door body 3 is supplied as a signal from the motor 5 or is determined by a separately provided direction determination sensor (not shown), whereby the direction of energization to the electromagnet 62 is switched to switch the door body 3. It may be one that can be joined in the F direction. Furthermore, at the time of the closing operation, the electromagnet 62 may not be energized, and the door body 3 may be in a state in which the opening 20 of the frame 2 is closed by the inertia force when the door body 3 is closed.

Further, in the present embodiment, the automatic door 1 in which the door main body 3 is a sliding door of a sliding type is described. However, as the door main body 3, a folding door 3a as shown in FIG. It may be.

Further, in the case of a sliding door of a sliding type, as shown in FIG. 8, a rail 7 provided along the frame 2 is used.
The door main body 3 can be configured to be housed in the vehicle.
In this case, the permanent magnet 61 and the electromagnet 62 may be mounted on both sides of the vertical rail 21 and the door body 3. The driving force required for opening and closing can be reduced not only at the start and the end of the opening but also at the end of the opening and the start of the closing.

Further, as shown in FIG. 9, the door body 3 slid and moved into a concave groove 21b provided in the vertical rail 21.
May be press-fitted to increase the degree of sealing. In the case of the automatic door 1, the opening and closing of the door main body 3
Is press-fitted, an extra driving force is required. However, by providing an electromagnet 62 in the groove 21b and providing a permanent magnet 61 in a portion of the door body 3 opposed to the electromagnet 62b, the driving force required for opening and closing is reduced. Can be reduced.

[0030]

As described above, according to the present invention, since the opening / closing reducing means for reducing the opening / closing of the door body by the magnetic force is provided between the frame and the door body, the opening of the door body starts. By using the magnetic force of the opening / closing reducing means at the timing when driving force is required at the end of closing and closing,
The driving force can be reduced by assisting the driving of the motor by the magnetic force. Therefore, the size of the motor can be reduced and the entire automatic door can be designed to be compact, and the driving power can be saved.

[Brief description of the drawings]

FIG. 1 (a) is a front view schematically showing the entire structure of an automatic door according to the present invention, FIG. 1 (b) is a sectional view taken along the line II of FIG. 1 (a),
(C) is a sectional view taken along the line II-II in (a) of FIG.

FIGS. 2A to 2D are process diagrams for explaining an opening / closing operation of an automatic door according to the present invention.

FIG. 3A is a front view schematically showing the entire configuration of an automatic door according to another embodiment of the present invention, and FIG.
3C is a sectional view taken along the line III-III, and FIG. 3C is a sectional view taken along the line IV-IV in FIG.

4 (a) to 4 (d) are process diagrams for explaining the opening / closing operation of the automatic door shown in FIG. 3;

FIG. 5 is a cross-sectional view of the automatic door showing another attachment state of the permanent magnet and the electromagnet of the opening / closing reducing unit.

FIG. 6A is a horizontal cross-sectional view of an automatic door showing still another mounting state of the permanent magnet and the electromagnet of the opening / closing reducing means,
(B) is a vertical partial sectional view of the same.

7 (a) and 7 (b) are schematic horizontal sectional views showing another embodiment of the automatic door.

8 (a) to 8 (c) are schematic horizontal sectional views showing still another embodiment of the automatic door.

FIG. 9 is a schematic horizontal sectional view showing still another embodiment of the automatic door.

FIGS. 10A to 10C are process diagrams illustrating the operation of a conventional sliding door of a sliding type.

FIGS. 11A to 11C are process diagrams illustrating the operation of a conventional folding door.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic door 2 Frame body 3 Door main body 3a Oridoor 31 Rotation axis (rotation center axis) 4 Non-contact sensor 5 Motor 6 Opening / closing reduction means 61 Permanent magnet 62 Electromagnet

Claims (5)

[Claims] An automatic door in which a door body provided on a frame body is opened and closed by a driving force of a motor activated by a non-contact sensor or a contact switch, wherein the automatic door is opened and closed. An automatic door provided with opening / closing reducing means for reducing opening / closing of the door body by magnetic force between the doors. 2. The opening / closing reducing means comprises a permanent magnet and an electromagnet, or electromagnets, one of which is provided on a frame body, the other is provided on a door body, and the electromagnet is actuated to open the frame body and the door body. 2. The automatic door according to claim 1, wherein the door is repelled or joined. 3. The permanent magnet of the door body is moved relative to the permanent magnet of the frame body by moving any one of the permanent magnet provided on the frame body and the permanent magnet provided on the door body. The automatic door according to claim 1, further comprising a mechanism switch configured to repel or join the automatic door. 4. The automatic door according to claim 1, wherein the door main body is a folding door or a rotary sliding type retractable door. 5. The automatic door according to claim 4, wherein the magnetic force of the opening / closing reducing means acts on at least one of a position distant from and a position close to the rotation center axis of the door main body.