KR20010054711A - Automatic door opening/shutting device - Google Patents

Abstract

PURPOSE: An automatic door opening/shutting device is provided to minimize contact resistance by operating each door of an automatic door using a roller and a rail in rolling contact type and to operate doors smoothly with a motor and a wire rope by decreasing load working on a wire rope. CONSTITUTION: An automatic door opening/shutting device having a sensor(3) sensing a visitor, left and right doors(1,2) operated to both sides, a motor providing necessary power for operating each door, and a setting plate(5) where the motor is installed comprises: a rail(11) having the double length of each door on the setting plate; brackets(6,6') projected from both ends of the top of each door respectively, provided with rollers(12) vertically on the front and rear of the front end, interposed to make each roller rolling-contact with a rectangular folded part of the rail and projected to the outside through the opening of the rail; a driving pulley(7) and a driven pulley(8) formed on the opposite side to be separated as much as the opening length of each door horizontally from each inner bracket of each door; a wire rope(9) of which one end is fixed to the left top of the inner bracket of the left door, the middle part is fixed to the lower part of the inner bracket of the right door by going around the driven pulley, and the other end is fixed to the right top of the inner bracket of the left door by going around the driving pulley to open each door with driving force from the motor connected to the driving pulley; an elastic member connected to each fixed end of the wire rope elastically to keep the tension of the wire rope regularly; and limit switches(13,14) installed on the rail to limit the opening length of each door.

Description

Automatic Door Opener {.}

The present invention relates to an automatic door opening and closing device, and more particularly, both doors are simultaneously opened and closed according to each rotation direction of one forward and reverse motor, and at the same time, a sensor is installed at a contact portion between each door and a lower end of each door to promote safety in use. An automatic door opening and closing device is provided.

As is well known, automatic doors are employed in department stores, various public places, large buildings, and the like, and are automatically applied to large factories by detecting a sensor by the upper sensor when a visitor stands in front of the door. .

Such an automatic door includes the apparatus shown in FIG. 1, which will be described as an example of the automatic door according to the prior art.

The automatic door is installed in the rectangular mounting plate 100, the drive motor 101 capable of forward and reverse rotation and the reduction gear 102 for reducing the rotational force thereof is installed, the visitor near the door 108 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 sensor for sensing, and the chain (on the guide pulley 104 installed on the other side of the output shaft of the reduction gear 102 and the mounting plate 100). 105 and a belt connected to the wire 106 are mounted, and a hanger 107 fixed to the chain 105 to open and close the door 108 when the belt is driven is fixed to a predetermined position on the upper surface of the door 108.

In addition, a separate bracket 109 is provided at the upper end of the door 108, the bracket 109 is coupled to the engaging groove 110 of the lower side of the mounting plate 100, the sliding opening and closing direction is guided while driving the belt. do.

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

However, the above-described automatic door has a locking groove 10 below the mounting plate 100 where the bracket 109 of the door 108 is driven by a belt supported between the output shaft of the reducer 102 and the guide pulley 104. Sliding along the sliding contact is increased so that the contact resistance is increased accordingly, the belt is subjected to a large tension, this is because the concentrated load repeatedly acts on the guide pulley 104 is easily deformed and broken, the door 108 when opening and closing the relative The door 108 is lifted due to the impact of contact with the structure, there is a problem that excessive force is applied to the locking groove 110 is easily worn.

In addition, the automatic door is operated only in one direction, so when applied to the automatic door in both directions, two such devices are required, which requires about twice the installation cost and labor, resulting in an increase in manufacturing cost. there was.

The present invention has been made in order to solve this problem, in the construction of automatic doors in both directions to drive the two-way doors as a motor at the same time as well as to make each door sliding along the rail rolling contact with the friction of each part It is an object of the present invention to provide an automatic door opening and closing device to extend the life of the automatic door by minimizing the number.

In another aspect, the lower end of the automatic door is to be guided in contact with the cloud so that the automatic door is opened and closed while maintaining the vertical.

In another aspect, the object is to further increase the safety in use by further providing a sensor in the contact portion and the lower portion of each door.

1 is a block diagram of an automatic door opening and closing device according to the prior art.

Figure 2 is an overall configuration of the automatic door opening and closing apparatus according to the present invention.

Figure 3 is a detailed view of the drive unit of the automatic door opening and closing apparatus according to the present invention.

Figure 4 is a detailed view of the upper guide portion of the movable door opening and closing apparatus according to the present invention.

Figure 5 is a detailed view of the guide of the lower end of the automatic door according to the present invention.

6 is a detailed view of the guide of the lower contact portion of the automatic door according to the present invention,

(a) is a plan view.

(b) is a side view.

<Explanation of symbols for the main parts of the drawings>

1,2: door 3,19,20: sensor

4: motor 5: mounting plate

6,6 ', 17 Bracket 7: Drive pulley

8: driven pulley 9: wire rope

10,10 ': Spring 11,15: Rail

12,16,18: roller 13,14: limit switch

Automatic door opening and closing device according to the present invention for achieving this object, a sensor for detecting a visitor, each door that is opened and closed in both directions depending on whether the sensor detects the visitor, and a motor for providing power required for opening and closing the door; Is provided with an installation plate is installed the motor,

It has a length more than twice the length of the two doors, the cross-section is a "c" shape and the opening portion is downwardly bent while forming a predetermined opening portion inwardly from each end of the opening portion, respectively, the predetermined length is bent at right angles. A rail installed in the mounting plate with a; The rollers are protruded and formed from upper ends of the upper doors, respectively, and rollers are vertically coupled to the front end / rear of the doors so that the rollers are inserted in contact with each other at the right angled bends of the rails. A bracket drawn outward; A driving pulley and a driven pulley which are formed on the opposite side of the door in a horizontal direction from the respective inner brackets of the door in the horizontal direction; One end is fixed to the upper left side of the inner bracket of the left door, turning the driven pulley, the stop portion is fixed to the lower part of the right door, the other end of the driving pulley is fixed to the upper right of the left door is connected to the drive pulley A wire rope for opening and closing each door by receiving a driving force from the motor; An elastic member which pulls each fixed end of the wire rope to maintain a constant tension of the wire rope; And at least one limit switch provided on the rail to limit the opening and closing length of each door.

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

Figure 2 is an overall configuration of the automatic door opening and closing device according to the invention, Figure 3 is a detailed view of the driving unit of the automatic door opening and closing device according to the invention, Figure 4 is a detailed view of the upper guide portion of the movable door opening and closing device according to the present invention. 5 is a detailed view of the guide of the lower end of the automatic door according to the present invention, Figure 6 is a detailed view of the guide of the lower contact portion of the automatic door according to the present invention.

Automatic door opening and closing device according to the present invention has a door (1) (2) that is basically opened and closed in both directions, as shown in Figures 2 and 3, and the main sensor (3) located on the upper door to detect visitors On the upper part of the door, a motor 4 driven by a command of the control unit, not shown in the drawing, and an installation plate 5 on which the motor 4 is installed are mounted according to whether the visitor is detected through the main sensor 3. It is provided.

Each door (1) (2) is opened or closed in the opposite direction by receiving a driving force from one motor (4), which is opened and closed in both directions, respectively, the upper side of each door (1) (2) in the left and right sides respectively The brackets 6 and 6 'are protruded and formed, and the opposite directions correspond to the opening lengths of the doors 1 and 2 in the horizontal direction from the inner brackets 6' of the doors 1 and 2, respectively. The driving pulley 7 connected to the motor 4 and the driven pulley 8 receiving the driving force therefrom are formed and separated from each other, and the driving force of the motor 4 is transmitted from the driving pulley 7 to each door ( 1) A wire rope 9 for opening and closing 2 is fixed to the upper left side of the inner bracket 6 'of the left door 1, and the driven pulley 8 is turned to stop the stop of the right door 2 It is fixed to the lower side of the inner bracket 6 'and the driving pulley 7 is rotated and the other end is fixed to the upper right side of the inner bracket 6' of the left door 1, and to each fixed end of the wire rope 9 In order to keep the tension constant, elastic members such as springs 10 and 10 'are respectively elastically connected.

At this time, each door (1) (2) is guided in the opening and closing direction while rolling contact in the rail 11 having a predetermined shape, the rail 11 has a length of more than twice the length of both doors, as shown in FIG. It is shaped like a "c" and its opening is downward and has a shape in which a predetermined length is bent at right angles, respectively, forming a predetermined opening from each end of the opening, and in a horizontal direction on the mounting plate 5. Is installed.

In addition, the front end of the bracket (6) (6 ') of each door (1) (2) is coupled to the roller 12 which rotates in the vertical direction at the front and rear, respectively, each roller 12 is a rail (11) It is inserted into the cloud bent contact portion at a right angle of the, has a shape in which the bracket (6) (6 ') is drawn out to the lower side through the open portion of the rail (11).

In addition, the opening detection limit switch 13 and the closing detection limit switch 14 are installed at appropriate positions on the rail 11 so as to limit the opening and closing length of each door.

On the other hand, in order to open and close each door (1) (2) while maintaining the vertical need a structure that can guide the lower end of each door (1) (2), as shown in Figures 5 and 6 A rail 15 having an “H” shaped cross section is fitted to the lower end of the doors 1 and 2, and rollers 16 connected to the bottom part corresponding to both sides of the lower ends of the doors in a horizontal direction by a set bolt. Is inserted into the lower space of the "H" shape so as to contact the lower end of each door (1), (2) guides, and the bottom corresponding to the bottom contact portion of each door (1) (2) front and rear The brackets 17 are fixed by the set bolts symmetrically, and each of the brackets 17 is provided with two rollers 18 which are in rolling contact with each door 1 and 2 in the horizontal direction, respectively. Guide the bottom contact area of (2).

In addition, the contact area of each door (1) (2) and the lower part of each door (1) (2) so that even a short person, such as a child, can be detected without being caught between each door (1) (2) One side is further provided with a touch sensor 19 and an optical sensor 20.

The automatic door opening and closing device according to the present invention configured as described above operates as follows.

First, when a visitor or object is detected through each sensor, for example, the main sensor 3, the touch sensor 19, and the light sensor 20 while the bidirectional doors 1 and 2 are closed, the detection signal is displayed on the drawing. It is passed to the control unit, not shown.

The controller receives this signal and generates a motor driving signal. The motor 4 starts driving by this signal. When the motor 4 rotates counterclockwise, the rotational force is driven by the driving pulley 7. And the wire rope 9 between the driven pulley 8 can be opened by moving in the direction in which each door (1) (2) open to each other.

That is, when the motor 4 rotates counterclockwise, the wire rope 9 is fixed to the inner bracket 6 'of the right door 2 so that the lower end thereof is fixed so that the right door 2 is pulled to the right. Also, since one end is fixed to the upper left side of the inner bracket 6 'of the outer door 1, the left door 1 can be pulled to the left to move.

The opening lengths of the doors 1 and 2 are limited by the opening detection limit switches 13 provided on both sides of the rail 11 to stop the driving of the motor 4, even in this state. (3) (19) (20) continuously performs the sensing operation. When no more visitors or objects are detected, the motor (4) is driven clockwise to close each door (1) (2). . The closing action of each door (1) (2) is the opposite of the opening action. When each door (1) (2) is completely closed, the closing detection limit switch 14 closes each door (1) (2). By detecting the state, the control unit stops the driving of the motor 4.

At this time, each of the brackets (6, 6 ') formed on the upper left and right of each door (1) (2) is formed with a roller 12 that rotates in the vertical direction, the roller 12 is a rail (11) It is obvious that the roller 12 is guided by rolling contact along the rail 11 when each door 1, 2 is opened and closed. Thus, each door 1, 2 is rolled with the rail 11 and rolling. As it is guided while contacting, the contact resistance is reduced to a minimum, and the load applied to the wire rope 9 is also relatively low, so that even one motor 4 and one wire rope 9 smoothly move both doors 1 and 2 with each other. It can be opened and closed.

In addition, in opening and closing the automatic doors, it is very important for safety and lifespan that each door (1) (2) is opened and closed while maintaining a vertical, as described above, the lower end of the door (1) (2) "H" A rail 15 having a cross-sectional shape is inserted into the lower space corresponding to both sides of the lower ends of the doors 1 and 2, and the rollers 16 connected in the horizontal direction by the set bolts are “H” shaped lower spaces. Since the doors are fitted in contact with each other, the lower ends of the doors 1 and 2 can be guided in rolling contact with the rollers 16 when the doors 1 and 2 are opened and closed. 2) vertical maintenance, of course, has the advantage of opening and closing operation in a state of relatively low contact resistance, and the bottom bolt corresponding to the contact portion of the lower end of each door (1), (2) set bolt symmetrically front / rear The brackets 17 are fixed by the two brackets, and each bracket 17 has two clouds contacting each other on the side surfaces of the doors 1 and 2. Since the rollers 18 are formed respectively, the central portions of the doors 1 and 2 can be guided while rolling in contact with the rollers 18, so that the contact resistance can be opened and closed with a relatively low contact resistance. When you look at the entire door, each door (1) (2) can be opened and closed smoothly while maintaining the vertical without distortion.

On the other hand, the most important thing in opening and closing the automatic door is safety in use, and the automatic door is operated by being caught between the doors (1) and (2) which are opened and closed in both directions, or the automatic door is not detected due to the short height of children It is a well-known fact that frequent opening and closing does not occur.

By the way, in the automatic door opening and closing device according to the present invention is provided with a touch sensor 19 in the contact portion between each door (1) (2), if it is caught between each door (1) (2) during use of the automatic touch sensor Detected by the (19) can quickly stop the drive of the motor (4) or change the direction of rotation can be used for the safety of the use, and the light sensor 20 on the lower side of the foot (l) (2) Since it is equipped with a small child or a low object can be easily detected it is possible to improve the reliability in use.

Since each sensor (3) 19 (20) is always in operation regardless of whether the opening or closing operation of each door (1) or (2) is completed or performing, it is necessary to perform unnecessary opening and closing operation in using the automatic door. Since the frequency is very small, the reliability can be improved and power consumption can be greatly reduced.

As described above, in the present invention, each door constituting the automatic door is opened and closed while rolling in contact with the roller and the rail, the contact resistance is minimized, and the load on the wire rope is also relatively small, so that one motor and one The wire rope can be opened and closed smoothly, and the lower end of each door can also be guided by roller contact with the roller, so that each door can be operated while maintaining the vertical to extend the life of the device. In addition, since the touch sensor and the optical sensor are provided in the contact portion and the lower portion of each door, there is a useful effect to improve the safety and reliability in use.

Claims (3)

Sensor 3 for detecting a visitor, each door (1) (2) opening and closing in both directions depending on whether the sensor 3 is detected, and the power required for opening and closing the door (1) (2) In the automatic door opening and closing device provided with a motor (4) for providing, and the mounting plate (5) on which the motor (4) is installed, Each door (1) (2) has a length of more than twice the length, the cross section is a "c" shape of the opening portion downwards while forming a predetermined opening portion inward from each end of the opening portion, respectively A rail 11 having a predetermined length perpendicularly bent to the mounting plate 5; Protruding and forming from the upper end of each of the door (1) (2), respectively, the roller 12 is coupled to the front and rear of the front end in the vertical direction so that each roller 12 is bent at a right angle of the rail (11) A bracket (6) (6 ') inserted into the portion so as to be in contact with the cloud and drawn outward through an open portion of the rail (11); Drive pulleys 7 which are respectively spaced apart from each other in the opposite direction by the opening lengths of the doors 1 and 2 in the horizontal direction from the respective inner brackets 6 'of the doors 1 and 2, respectively. And driven pulleys (8); One end is fixed to the upper left side of the inner bracket of the left door (1), turn the driven pulley (8), the stop is fixed to the lower side of the inner bracket of the right door (2), turn the drive pulley (7) The other end of the wire rope is fixed to the upper right side of the inner bracket of the left door (1) receives a driving force from the motor (4) connected to the drive pulley (7) to open and close the door (1) (2) ( 9); An elastic member that is elastically connected to each fixed end of the wire rope 9 and pulls it to maintain a constant tension of the wire rope 9; And Automatic door opening and closing device, characterized in that it comprises at least one limit switch (13) (14) provided on the rail (11) to limit the opening and closing length of each door (1) (2). The method of claim 1, The lower end of each door (1) (2) is fitted with a rail (15) having a cross-section of the "H" shape, horizontally by a set bolt on the bottom corresponding to both sides of the lower end of each door (1) (2) The roller 16 connected in the direction is inserted into the "H" shaped lower space so as to make a cloud contact, and guides both ends of the lower end of each said door (1) (2), and of each said door (1) (2) The bracket 17 is fixed to the bottom portion corresponding to the bottom contact portion by the set bolt so that the front and rear surfaces are symmetrical, and each bracket 17 has a rolling contact with the doors 1 and 2 in the horizontal direction. Automatic roller opening and closing device, characterized in that four rollers (18) are formed to guide the lower end contact portions of the doors (1) and (2). The method of claim 1, Sensors 19 and 20 are further provided at contact portions of the doors 1 and 2 and lower sides of the doors 1 and 2, respectively, and are sandwiched between the doors 1 and 2, respectively. Automatic door opening and closing device, characterized in that it is possible to detect even a short person, such as children.