JPH1096365A - Automatic closable door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic closable door such that a floor face on which the door is opened and closed can be leveled. SOLUTION: A magnet 4 is mounted on the bottom of a door frame 2, and a magnet 5 is embedded in a floor face facing the magnet 4. When a door is closed, an attracting force works between the magnet 4 at the bottom of the door and the magnet 5 in the floor face, allowing the door to move along the magnet 5 and not in the longitudinal direction. When the door is opened, an attracting force also works between the magnet 4 at the bottom of the door and the magnet 5 in the floor face, allowing the door to move along the magnet 5 and not in the longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an automatic door.

[0002]

2. Description of the Related Art Automatically opening and closing doors are installed at entrances and exits of buildings by detecting that a person has approached a door by infrared rays or the like, and automatically opening the door without opening the door by hand, and closing the door when moving away. I have.

In this type of automatic opening and closing door, as shown in FIG. 7, a double door 31 is suspended by a guide 30 provided on an upper part thereof, and a driving unit (not shown) moves the door 31 left and right. The door 31 is opened and closed. A guide groove 32 as shown in FIG. 8 is formed on the floor surface on which the automatic opening / closing door is installed. It comes into contact with the side surface. When the door 31 is opened and closed, the door 31 suspended by the guide 30 is opened and closed left and right by the driving unit, and the roller 34 is moved to the groove 3 on the floor surface.
2 in the longitudinal direction so that the door 31 opens and closes. The groove 32 and the roller 34 prevent the door 31 from moving in a direction perpendicular to the opening / closing direction, that is, in the front-back direction.

[0004]

However, in the automatic opening / closing door having the above-described structure, the groove 32 on the floor surface is exposed when the door 31 is opened. And children's shoes were caught and dangerous. In addition, dust or the like accumulates in the groove 32 and causes an obstacle at the time of opening and closing. As a result, an unnecessary load is applied to the motor, which causes a failure. Further, there is a problem that the cart is dislodged when passing through a trolley, a wheelchair, or the like, or discomfort due to a step occurs when passing through a trolley.

In order to solve the above problem, FIG.
Is provided on the lower surface of the door, and when the door is closed, the guide 35 is housed in a groove on the floor surface, and when the door is opened, the guide 35 is lifted and the guide 35 is By the structure stored in the door 31,
An automatic opening / closing door has been put to practical use so that the floor surface becomes almost flat when the door 31 is opened.

In this automatic opening / closing door, the guide 35 is formed by the groove 32
It is necessary to secure a certain gap between the guide 35 and the groove 32 so that the guide 35 is not completely stored in the groove 32 as a result. The risk of jumping out and tripping over is often found.

An object of the present invention is to provide an automatic opening / closing door capable of flattening a floor surface.

[0008]

According to a first aspect of the present invention, there is provided an automatic opening / closing door comprising a support portion for supporting the door, a driving portion for automatically opening and closing the door, and a first magnetic body provided on a lower surface of the door. When the door is opened and closed by the drive unit, the door moves along the second magnetic body due to the suction effect of the second magnetic body provided on the floor surface facing the first magnetic body and the first magnetic body. To be movable.

According to the first aspect of the present invention, when the door is closed, the door is closed by a suction force acting between the first magnetic body provided on the lower surface of the door and the second magnetic body provided on the floor. Can be prevented from moving back and forth (in a direction perpendicular to the opening and closing direction). Also, when the door is opened and closed by the drive unit, an attractive force acts between the first magnetic body and the second magnetic body, so that the door is opened and closed along the second magnetic body, and the door is moved in the front-rear direction. Does not move.

Therefore, there is no need to provide a groove on the floor surface as in the prior art, so that there is no problem that dust or the like is clogged in the groove and an unnecessary load is applied, and the drive unit is broken. Also,
Since there is no groove, a safer automatic door can be realized without shoes getting caught in the groove.

An automatic door according to a second aspect of the present invention comprises a door, a support portion for supporting the door, a driving portion for automatically opening and closing the door, and a fastener element provided on a lower surface of the door, and a floor facing the fastener element. A fastener is provided on the surface so that the fastener on the floor is opened and closed by the fastener base when the door is opened and closed.

According to the second aspect, when the door is open, the fastener provided in the groove on the floor is closed.
There is no problem that dust or the like enters the groove and cannot be opened and closed. Further, since the groove is covered with the fastener, no step is generated, and the shoe is not caught in the groove.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention in which a bar-shaped magnet is attached to a lower portion of a door will be described with reference to FIG.

This automatic opening / closing door is composed of a glass 1 and a door frame 2 for holding the glass 1, and the door is suspended by an upper guide 30 (support portion) as in the conventional example of FIG.
It is opened and closed by a motor (drive unit) provided at the top. This door may be a one-sided door.

A magnet 4 covered with a coating material 3 is attached to a lower portion of the door frame 2. The magnet 4 and the floor are separated from each other by a small distance so that they do not come into contact with each other.
Hanging.

One bar-shaped magnet 5 or a plurality of magnets 5 are arranged on the floor in the left-right direction in which the door opens and closes, and the magnet 5 is covered with a coating material 6.
Magnet 4 attached to door and magnet 5 embedded in floor
Are magnetized to different polarities so as to attract each other.

When the door is closed, the magnet 4 below the door is closed.
And the magnet 5 on the floor surface, and the attraction force acts so that the door does not move in the front-back direction (direction perpendicular to the direction in which the door is opened and closed). When the door is opened, the upper motor is driven, and the door connected to the motor by a belt or a gear opens left and right. Also at this time, since the attractive force acts between the magnet 4 at the lower part of the door and the magnet 5 on the floor, the door moves along the magnet 5 and does not move in the front-back direction.

When the door is closed, the upper motor is similarly driven to close the door. Also at this time, since the attractive force acts between the magnet 4 at the lower part of the door and the magnet 5 on the floor, the door moves along the magnet 5 and does not move in the front-back direction.

According to the above-described first embodiment, the door and the two magnets 4, 5 provided on the floor can prevent the door from moving in the front-rear direction. Can be configured. Thereby, various problems caused by providing a groove on the floor surface as in the related art can be solved.
In addition, since no dust or the like enters at all, there is no problem that the motor is overloaded and a failure occurs.

Next, a second embodiment of the present invention in which a caterpillar is attached to a lower portion of a door will be described with reference to FIG. Door frame 2
A caterpillar 11 is accommodated in a lower part of the caterpillar 11, and a movable portion of the caterpillar 11 is configured by a magnet 12.

As in the first embodiment, magnets 5 are embedded in the floor in a row in the direction in which the door moves. The magnet 5 embedded in the floor and the caterpillar 1 provided at the lower part of the door
One magnet 12 is magnetized with different polarities so as to attract each other.

When the door is closed, an attractive force acts between the magnet 12 below the caterpillar 11 and the magnet 5 on the floor, so that the door moves along the magnet 5 and does not move back and forth. ing.

When the door is opened, an attractive force acts between the magnets 12 of the caterpillar 11 and the magnets 5 on the floor, so that the door moves along the magnets 5 and does not move back and forth. Similarly, when the door is closed, an attractive force acts between the magnet 3 of the caterpillar 11 and the magnet 5 on the floor surface.
The door moves along the magnet 5 and does not move back and forth.

In the second embodiment, since the caterpillar 11 is in contact with the floor surface, the attraction force between the caterpillar 11 and the magnet 5 on the floor surface is increased, and the force for preventing the door from moving in the front-rear direction is also increased. Become.

Next, a third embodiment using a magnetic roller instead of a caterpillar will be described with reference to FIG. In the third embodiment, a roller 21 made of a magnetic material is
Are rotatably mounted on the left and right sides of the door.
The magnet 5 is embedded in the floor surface in contact with the roller 21 as in the first embodiment, and the roller 21 is magnetized to have the opposite polarity to the magnet 5 on the floor surface.

When the door is opened, the roller 21 moves while rotating on the magnet 5 on the floor surface, and an attractive force acts between the roller 21 and the magnet 5 on the floor surface. It does not move and move back and forth. Similarly, when the door is closed, the roller 21 moves while rotating on the magnet 5 on the floor, so that an attractive force acts between the roller 21 and the magnet 5 on the floor, and the door is applied to the magnet 5. It moves along and does not move back and forth.

In the third embodiment, the magnetic material on the lower surface of the door is constituted by the roller 21 and the roller 21 is brought into contact with the magnet 5 on the floor, so that a large attractive force can be obtained. In addition, by using the roller 21, an automatic door that has a simple structure and that opens and closes smoothly can be realized.

Next, a fourth embodiment of the present invention in which a floor is flattened by attaching a fastener to an existing guide groove 32 will be described with reference to FIGS. As shown in FIGS. 4 and 5, a fastener 24 is fixed to a metallic guide 23 that fits in the guide groove 32 by bonding or the like. The guide 23 is provided with a screw hole 25, and the guide 23 is fixed to the guide groove 32 using the screw hole 25. At the lower part of the door, a fastener base 26 for opening and closing the fastener is attached. The guide 23 may be made of plastic or the like.

Although not shown, a roller 34 that moves along the guide groove 32 is provided at the lower part of the door in the same manner as described in the conventional example. It does not move.

When the door is closed, the fastener 24 below the door is open. When the door is opened, the fastener 24 on the lower side of the door is
Is closed in order by As a result, the portion of the fastener 24 exposed when the door is opened is closed, and the floor surface becomes flat.

When the door is closed, the fasteners 24 are sequentially opened by the fastener base 26 at the lower part of the door, and the fastener 24 at the lower side of the door is opened. Also at this time, the fastener 24 at the exposed portion of the guide groove 32 in the middle of closing is still in the closed state, and the floor surface is flat.

According to the fourth embodiment, the guide groove 32 is covered by the fastener 24 when the door is opened.
The floor surface becomes flat, and no dust or the like enters the guide groove 32. In addition, since there is no step due to the guide groove 32, the shoes do not get caught. Further, since the present invention can be applied to the existing guide groove 32, a step due to the guide groove 32 of the door currently used can be eliminated.

In the above embodiment, the door is opened and closed by a motor as an example. However, the door may be opened and closed by a device such as a hydraulic or pneumatic device. Further, an electromagnet may be used as the magnet.

[0034]

According to the present invention, since the floor for opening and closing the door can be made flat, there is no problem that shoes or the like are caught in the groove. In addition, there is no problem that dust or the like is clogged in the groove and the motor is broken due to overload. Further, it is possible to solve the problem that the load caused by the passage of the truck and the discomfort caused by the passage of the wheelchair are eliminated.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a second embodiment.

FIG. 3 is a sectional view of a main part of a third embodiment.

FIG. 4 is a sectional view of a main part of a fourth embodiment.

FIG. 5 is a sectional view of a guide 23 and a fastener 24.

FIG. 6 is a diagram showing a state where a door is opened.

FIG. 7 is an external view of an automatic opening / closing door.

FIG. 8 is a sectional view of a main part of a conventional automatic door.

FIG. 9 is an external view of another conventional example.

[Explanation of symbols]

 2 Door frame 4, 5, 12, 21 Magnet 11 Caterpillar 21 Roller 24 Fastener

Claims (7)

[Claims] 1. A door, a support for supporting the door, a drive for automatically opening and closing the door, and a first magnetic body provided on a lower surface of the door, wherein the door is opened and closed by the drive. When the second magnetic body is provided on the floor facing the first magnetic body,
An automatic opening / closing door, wherein the door is movable along the second magnetic body by a suction action with the magnetic body. 2. The automatic door according to claim 1, wherein the first magnetic body is a bar-shaped magnet. 3. The automatic opening / closing door according to claim 1, wherein the first magnetic body is a caterpillar whose rotating part is made of a magnetic body. 4. The apparatus according to claim 1, wherein the first magnetic body is a roller rotatably mounted on the door.
Automatic opening and closing door as described. 5. A door comprising: a door; a support for supporting the door; a drive for automatically opening and closing the door; and a fastener provided on a lower surface of the door, wherein a fastener is provided on a floor facing the fastener. An automatic opening / closing door, wherein the fastener on the floor is opened / closed by the fastener base when the door is opened / closed. 6. The automatic opening / closing door according to claim 5, wherein said fastener comprises a guide housed in a guide groove on a floor surface and a fastener fixed to said guide. 7. The automatic opening and closing device according to claim 5, wherein the fastener comprises a guide housed in a guide groove on the floor surface and a fastener fixed to the guide, and can be easily mounted in an existing guide groove. door.