KR100252595B1 - An opening and closing device for auto-door - Google Patents

Abstract

PURPOSE: An automatic door opening and shutoff device is provided to improve durability by preventing lifting of a door due to a contact shock and abrasion of a driving part and to improve work efficiency by making installation easy. CONSTITUTION: A door opening and shutoff device comprises: a power generating unit consisting of a drive motor(2) and a decelerator(3); a drive chain(5) mounted on a drive sprocket(3A) of the decelerator and a power transmission sprocket(4A) for opening of a right side door; a driven chain(8) mounted on a power transmission sprocket(6A) for opening of a left side door and a driven sprocket(7); door hangers(20,21) fixed onto the left and right side doors(4,6) to open and close the doors; a displacement preventing bar combined to a slit to change a fixed position to prevent lifting of the right side door; a limit switch installed on an installation panel(1) to automatically controlling opening and shutoff positions of the left and right side doors; a control unit installed at a specific portion of the doors to control driving of the drive motor; and lowering preventing units(30,31) mounted on the installation panel to prevent lowering of the drive chain and the driven chain. As the opening and shutoff device is installed easily, work process is simplified and installation cost is reduced. Lowering of the chains due to tension is prevented, and durability of the opening and shutoff device is improved.

Description

Automatic door opener

The present invention relates to an automatic opening and closing device for a door, and more particularly, it is easy to install the automatic door opening and closing device for opening and closing the open door or both doors to the left and right to reduce the work maneuver to reduce the installation cost Automatic door opening and closing device.

1 is a perspective view showing an automatic door opening and closing apparatus according to the prior art. As shown, the automatic door opening and closing device structure is installed in the rectangular mounting plate 100, the drive motor 101 capable of forward and reverse rotation and a reduction gear 102 for reducing the rotational force thereof is installed, the door on one side of the mounting plate 100 The control box 103 for controlling the driving motor 101 is installed in accordance with the detection signal by the detector for detecting a visitor close to the guide pulley, which is installed on the output shaft of the reducer 102 and the other side of the mounting plate 100. A belt connected to the chain 105 and the wire 106 is mounted to the 104, and the other side of the hanger 107 fixed to the chain 105 and interlocked when the belt is driven to open and close the door 108. The upper surface of the door 108 is fixed to a predetermined position.

Reference numeral 111 is a guide groove for supporting the bottom when opening and closing the door 108, 112 is the wife roller.

However, the automatic door opening and closing device as described above is easily deformed due to the concentrated load repeatedly acting on the guide pulley 104 by the tension generated during the drive of the output shaft of the reducer 102 and the belt supported by the guide pulley 104. When the door 108 is opened and closed, the upper end thereof is coupled to the locking groove 110 of the lower side of the installation plate 100 so as to slide, and thus the door 108 may be damaged by contact with the mating structure. This excitement is applied to the locking groove 110 has an excessive impact and has a problem that the driving portion is easily worn.

Accordingly, an object of the present invention is to prevent durability of the door by the door hanger constituting the automatic door opening and closing device due to the impact of contact with the counterpart structure when opening and closing the door to prevent wear of the driving portion to improve durability, automatic door opening and closing device It is to provide an automatic door opening and closing device that can be easily mounted on the installation surface to improve workability.

1 is a perspective view showing an automatic door opening and closing device according to the prior art.

2 is a schematic view showing a two-door automatic door opening and closing apparatus according to the present invention.

3 is a perspective view showing a power transmission member for opening and closing the left and right doors according to the present invention.

4 is a perspective view showing a driven pulley according to the present invention.

5 is a perspective view showing a door hanger according to the present invention.

6 is a coupling state diagram showing a limit switch according to the present invention.

7 is an exploded perspective view showing a reducer according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Mounting plate 2: Drive motor

3: reducer 5: drive side chain

8: driven chain 9: limit switch

20.21: Door hanger 30, 31: Chain sagging prevention

In order to achieve the above object, the present invention is installed on one side of the mounting plate is connected to the drive motor and the drive motor is rotated forward and reverse, the power generating unit consisting of a reducer for changing the rotational force and its transmission direction, the drive sprocket and installation of the reducer The drive chain mounted on the right door opening and closing power transmission sprocket installed at the center of the plate and the left door opening and closing power transmission sprocket, and the driven chain mounted on the other side of the mounting plate and the driven side chain driving in the opposite direction to the driving chain and one side It is fixed to the driving side chain and the driven side chain, and the other side is fixed to the upper left and right side doors, the door hanger which opens and closes the left and right doors when driving the driving side chain and the driven side chain, and is installed at a predetermined position on the mounting plate. Limit switch for automatic control of the door According to the detection signal by the detector for detecting those it provides an automatic door closing device consisting of chain sag prevention sphere to prevent the control unit for controlling the driving of the drive motor, and the drive-side and driven-side chain, the chain sagging downward.

According to the present invention, the right side door hanger is formed inclined at a predetermined angle in the horizontal direction of the left and right door hangers, by adjusting the insertion of the separation prevention rod in the long hole, it is possible to selectively adjust the height of the right door.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a schematic view showing a two-door automatic door opening and closing device according to the present invention, Figure 3 is a perspective view showing the power transmission member for opening and closing the left and right doors by the present foot, Figure 4 is a perspective view showing a driven pulley according to the present invention 5 is a perspective view showing a door hanger according to the present invention, FIG. 6 is a combined state diagram showing a limit switch according to the present invention, and FIG. 7 is an exploded perspective view showing a speed reducer according to the present invention.

As shown in FIG. 2 and FIG. 7, a drive motor 2 capable of forward and reverse rotation is installed on one side of the mounting plate 1, and the accelerator 3 which decelerates the assembly power is provided on the drive motor 2. The speed reducer 3 is installed in the housing H and is connected to the rotation shaft 2A of the drive motor 2 so as to be integral with the worm 12 and the rotational force and power transmission of the drive motor 2. And a drive sprocket 3A mounted on a shaft S of the worm wheel 13 and the worm wheel 13 for changing the direction and on which the drive side chain 5 is installed.

As shown in FIG. 2 and FIG. 3, the right door 4 of the power transmission member A for opening and closing the left and right doors fixed to the drive sprocket 3A of the speed reducer 3 and the center side of the mounting plate 1 is shown. The drive side chain 5 is mounted on the power transmission sprocket 4A for opening and closing, and the other side of the power transmission sprocket 6A for opening and closing the left door 6 and the mounting plate 1 of the power transmission member A described above. The driven chain 8 is mounted on the driven sprocket 7 installed in the driven sprocket 7, and the driving direction of the driving chain 5 is driven by the driving gears G1 and G2 of the power transmission member A described above. It is driven in the direction opposite to that of the ipsilateral chain 8. At this time, the aforementioned drive gears G1 and G2 are rotatably installed on the bracket 14 fixed to the mounting plate 1, and the sprockets 4A and 6A of the power transmission member A described above are brackets 14. ) Is fixed on the coaxial of the drive gears (G1, G2) to the outside of the bent piece (15) forming a blocking wall with respect to the drive gear (G1, G2).

As shown in Figs. 2 and 6, the limit switch 9 for automatically controlling the opening and closing when opening and closing the left and right doors 4 and 6 at a predetermined position of the mounting plate 1 by means of fastening means, The fastening means includes a bracket 10 for fixing the limit switch 9 fixed to the mounting plate 1 at both ends and spaced apart from the mounting plate 1, and a fastening hole corresponding to several fixing holes 9A of the limit switch 9 ( 11A) is formed and is provided between the bracket 10 and the mounting plate 1 to have a fixed plate 11 for fastening by changing the fixed position of the limit switch 9 according to the opening and closing position of the door.

As shown in Figures 2 and 4, the above-described fixing of the driven sprocket (7) is fixed by the welding or fastening member bracket 16 for setting the fixed position when fixed to the mounting plate (1), The driven sprocket 7, which is fixed to the bracket 16 and to which the driven side chain 8 is mounted, is fixedly supported by the bending piece 17 which is fixed to be rotatable.

As shown in Figs. 2 and 5, supporters 18 and 19, one side of which is fixed to the above-described driving side chain 5 and driven side chain 8, on the upper surfaces of the left and right doors 4 and 6; The door hanger 20 is fixed to the connecting rod (22, 23) of the connection, the right door hanger 20 is fixed to the upper surface of the right door 4, the bracket 24 is fixed as a fastening member, bracket While fixing the release prevention bar (25) to prevent the lifting due to the impact of contact with the mating structure when opening and closing the right door (4) at the lower side of the (24), the fixed position of the release prevention bar (25) to the right door (4) Long hole 26 is formed to be inclined at a predetermined angle with respect to the horizontal direction to selectively change in accordance with the height error of.

When the right door 4 is opened and closed on the bracket 24 described above, the roller 27 sliding along the rail R1 is rotatably mounted, and the roller 27 is fixed to the bracket 24. And a stopper groove for preventing the roller 27 and the fixed shaft 28 from being simultaneously rotated when the fixed shaft 28 is fixed to the bracket 24 on one side of the outer circumferential surface of the fixed shaft 28. 29) is formed.

On the other hand, the driving side chain 5 and the driven side chain 8 are stretched due to the generation of the tensile force due to the repetitive driving of the driving side chain 5 and the driven side chain 8. Thus, the chain restraints 30 and 31 for preventing sagging of the drive side and driven side chains 5 and 8 are mounted to the mounting plate 1.

The automatic door opening and closing device is installed at a predetermined position of the mounting plate 1 above the left and right doors 4 and 6 and is controlled according to a detection signal input through a detector (not shown) for detecting a visitor approaching the door. (Not shown) drives the drive motor 2 and the reducer 3 in the forward direction (clockwise), thereby driving the drive sprocket 3A of the reducer 3 and the power transmission sprocket 4A for opening and closing the right door 4. The drive side chain 5 mounted on the) is driven counterclockwise by the drive gears G1 and G2 of the power transmission member A.

At the same time, the left and right doors 4 and 6 move in the direction of the arrow as the power transmission sprocket 6A for opening and closing the left door 6 and the driven chain 8 mounted on the driven sprocket 7 are driven clockwise. Open.

When the left and right doors 4 and 6 are opened, the left and right doors 4 and 6 are detected to be opened to a predetermined maximum range by driving the limit switch 9 installed at a predetermined position of the mounting plate 1. This causes the control unit to stop driving the driving motor 2.

On the other hand, when the visitor passes through the door, the control unit drives the drive motor 2 and the reducer 3 in the reverse direction (counterclockwise) to drive the drive side chain 5 and the driven side chain 8. The left and right doors 4 and 6 are then returned and closed.

As described above, the automatic door opening and closing device according to the present invention has the advantage of easily fixing the automatic door opening and closing device for the installation plate installed at a predetermined position, such as a factory entrance door, thereby greatly reducing the installation cost.

In addition, there is an advantage of improving the durability of the switchgear by preventing the sprocket supporting the drive chain from bending due to the tension generated in the drive chain due to repeated automatic door opening and closing. There is an advantage that the aftercare becomes easy.

Claims (1)

Is installed on one side of the mounting plate (1) is connected to the drive motor (2) and the forward and reverse rotation of the power generating unit consisting of a reducer (3) for changing the rotational force and its transmission direction, The drive side chain 5 mounted on the drive sprocket 3A of the reducer 3 and the right door opening and closing power transmission sprocket 4A installed at the center of the mounting plate 1, and the power transmission sprocket 6A for opening and closing the left door. And a driven side chain (8) mounted to the driven sprocket (7) installed on the other side and driving in the opposite direction to the drive side chain (5); One side is fixed to the drive side chain 5 and the driven side chain 8 and the other side is fixed to the upper left and right doors 6.4, the left and right doors when driving the drive side chain 5 and the driven side chain 8 Door hangers 20 and 21 for opening and closing 6 and 4; It is coupled to change the fixed position in the long hole 26 is formed to be inclined to the bracket 24 fixed to the upper side of the right door (4), and prevents lifting due to contact with the mating structure when opening and closing the right door (4). Breakaway prevention bar 25; A limit switch 9 installed at a predetermined position of the mounting plate 1 to automatically control an opening / closing position when opening and closing the left and right doors 6 and 4; A control unit installed at a predetermined position toward one side of the left and right doors 6 and 4 to control driving of the driving motor 2 according to a detection signal by a detector for detecting a visitor; And It is mounted to the mounting plate (1) characterized in that it is provided with a chain sag prevention device (30, 31) to prevent sagging due to the sag due to the tension force when driving the drive side chain 5 and the driven side chain (8) Automatic door opener.

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