KR200268628Y1 - Apparatus for opening and closing elevator door - Google Patents

Abstract

The present invention relates to an elevator door opening and closing device. It is a mounting plate fixed to the upper portion of the frame providing a space including a door panel, a door rail fixed to the mounting plate surface, as long as the door panel is fixed to the bottom and movable along the door rail, respectively An elevator door opening and closing device comprising a pair of hanger plates and opening and closing means for moving the hanger plate forward and backward. The first driven pulley and the second driven pulley rotatably installed on the mounting plate, the drive pulley installed between the first and second driven pulleys, the first driven pulley and the first pulley connected by winding And a second wire connecting the wire, the driving pulley and the second driven pulley, and a driving pulley rotating means for rotating the driving pulley.

The present invention made as described above, by applying two wires in order to open or close the two door panel so that one wire is responsible for the movement of one door panel, the tension force applied to the wire is small, the wire is stretched There is no concern and the wire does not run against the pulley so that the door panel can be opened and closed correctly. Also, since two wires are applied, the other wire can be operated even if one wire is cut, so that one door can be opened or closed normally. Can be.

Description

Elevator door opening and closing device {Apparatus for opening and closing elevator door}

The present invention relates to an elevator door opening and closing device.

For example, elevators are installed in buildings and high-rise apartments as a means for moving between floors. The elevator includes a cage, which is a space for a person to enter therein, and a motor installed on a roof of a building to lift the cage through a wire.

The cage is elevated along a rail fixed to an inner wall of an elevator passage formed perpendicular to the building, and a front door is provided to allow a person to ride down. The door is automatically opened or closed by the door opening and closing device.

On the other hand, the door opening and closing device is of various types depending on the configuration or operation method. But most of them are complex, heavy, and bulky.

For example, a door opening and closing device using a single wire has a configuration in which two door panels are connected to a single wire, so that the wire can be easily stretched due to the large tensile force applied to the wire. I had to inconvenience often. Naturally, it is not possible to open and close the correct door in a stretched state. In addition, the door cannot be opened or closed through the switchgear when the wire is cut in an emergency.

1 is a view illustrating a conventional elevator door opening and closing device.

Referring to the drawings, a conventional elevator door opening and closing device, the mounting plate 12 fixed to the upper portion of the frame 10, the door rail 18 of a predetermined width fixed horizontally to the mounting plate 12, A pair of hanger plates 16 which are movable along the door rails 18 and supported by the door rails 18 and fixed to the lower end of the door panel 14, respectively, and the hanger plates 16. By moving forward and backward mutually to open or close the door panel 14 includes a motor 26, the first and second pulleys (22, 24) and wires (30, 32).

The frame 10 provides a space for the door panel 14 to move forward and backward. The door panel 14 is a door that a person enters and exits, and a lower end thereof is guided by the frame 10. A hanger plate 16 having a guide roller 20 is fixed to an upper end of the door panel 14, and a first fixing bracket 34 and a second fixing bracket 36 are mounted on the top of each hanger plate 16. Are fixed respectively.

The mounting plate 12 is usually made of iron plate and is the place where the door opening and closing device is installed. The door rail 18 fixed to one side of the mounting plate 12 is a strip-shaped member having a predetermined width and thickness, and the guide roller 20 moves up by the upper edge portion thereof.

The first pulley 22 and the second pulley 24 are spaced apart from each other on the upper side of the door rail 18. The first and second pulleys 22 and 24 are connected to the first and second fixing brackets 34 and 36 through the first wire 30 and the second wire 32. In addition, the motor 26 is installed on the upper side of the first pulley 22. The drive shaft of the motor 26 and the first pulley 22 are connected by a drive wire 28.

Meanwhile, both ends of the first wire 30 are fixed to the first fixing bracket 34 and the second fixing bracket 36 while the second wire 32 extends, and the second wire 32 is formed on the first pulley 24. Both ends are fixed to the first fixing bracket 34 and the second fixing bracket 36 in a state spanning the pulley 22. As a result, the first wire 30 and the second wire 32 are connected through the first and second fixing brackets 34 and 36 to operate as one wire forming one closed curve.

Accordingly, when the driving wire 28 rotates in the direction of arrow a, the first and second wires 30 and 32 move in the direction of arrow b, and thus the hanger plate 16 is opened to each other to open the door panel 14. When the rotation direction of the motor 26 is reversed, the door panel 14 is closed.

However, in the conventional elevator door opening and closing device made as described above, the two door panels 14 are connected with the first and second wires 30 and 32 connected through the first and second fixing brackets 34 and 36. Since the movement, that is, the two door panels 14 must be moved with a single wire, there is a problem that the wire can be easily stretched because the tensile stress on the wire is large.

In particular, since the two wires are interconnected to form a single wire, the sagging phenomenon may occur even more because the length of the wire is long.

As described above, when the wire is stretched, the door panel may be opened or closed incorrectly, and when the wire is slack for each pulley, the door panel may not be closed or opened at all.

The present invention has been made to solve the above problems, by applying two wires to open or close two door panels, one wire is responsible for the movement of one door panel, so the tension applied to the wire is small It is an object of the present invention to provide an elevator door opening and closing device configured to accurately open and close the door panel because the wire does not run down and the wire does not run against the pulley.

1 is a view illustrating a conventional elevator door opening and closing device.

Figure 2 is a view schematically showing the configuration of the elevator door opening and closing apparatus according to an embodiment of the present invention.

3 is a cross-sectional view taken along line III-III of FIG. 2;

Figure 4 is a view showing the back of the elevator door opening and closing apparatus according to an embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

10: frame 12, 52: mounting plate

14: door panel 16: hanger plate

18,54: door rail 20,72: guide roller

22: first pulley 24: second pulley

26, 76: motor 28: drive wire

30,64: 1st wire 32,66: 2nd wire

34,68: 1st fixing bracket 36,70: 2nd fixing bracket

56: buffer rubber 58: the first driven pulley

60: second driven pulley 62: driving pulley

78: motor support 80: electric pulley

82: electric belt 84: controller

In order to achieve the above object, the present invention provides a mounting plate fixed to the upper portion of the frame that the pair of door panels can be retracted therein, and a door-shaped door rail extending horizontally and fixed to one side of the mounting plate; And a pair of hanger plates that are movable along the door rails while being supported by the door rails, and the door panels are fixed to the lower ends thereof, and the hanger plates are moved forward and backward to open or close the door panels. An elevator door opening and closing device comprising means; A first driven pulley and a second driven pulley spaced apart from each other by the length of the door rail, and rotatably installed between the first and second driven pulleys, the two pulley surfaces being rotatably installed on one side of the mounting plate. The first pulley coupled to the hanger plate and the other pulley of the driving pulley and the second driven pulley are wound by connecting and winding the driving pulley having the one pulley surface of the first driven pulley and the driving pulley. It characterized in that it comprises a second wire coupled to the other hanger plate, and drive pulley rotating means for rotating the drive pulley.

In addition, the drive pulley rotating means; It is provided on the other side of the mounting plate and includes a rotating member whose central axis penetrates through the mounting plate and connected to the central axis of the driving pulley, and a motor installed on the side of the rotating member to rotate the rotating member. It is characterized by.

In addition, the rotating member is an electric pulley having a pulley surface on its outer peripheral surface, characterized in that the electric belt is connected between the drive side of the motor and the electric pulley.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a view schematically showing the configuration of the elevator door opening and closing apparatus according to an embodiment of the present invention.

Referring to the drawings, the elevator door opening and closing apparatus according to the present embodiment, the mounting plate 52 installed on the upper portion of the frame 10, the first and second driven pulleys (58, 60) provided in the mounting plate 52 And a drive pulley 62, a drive pulley rotating means for rotating the drive pulley 62, a door rail 54 extending horizontally and providing a support force, and a door panel 14 at the bottom thereof. And a pair of hanger plates 16 capable of traveling along the door rail 54 and first and second wires 64 and 66 connected to the hanger plates 16.

Among the three pulleys provided in the mounting plate 52, the first and second driven pulleys 58 and 60 are located at both ends of the mounting plate 52, and the driving pulley 62 is the first and second driven pulleys 58 and 60. Located in the center of the).

The drive pulley 62 is a pulley having two pulley surfaces as shown in FIG. The first and second driven pulleys (58, 60) are located on the upper end of the door rail 54, respectively, and have the same dimensions. The drive pulley 62 may also have the same diameter as the first and second driven pulleys (58, 60).

A first wire 64 is inserted between the first driven pulley 58 and the driving pulley 62, and a second wire between the driving pulley 62 and the second driven pulley 60. 66 is fitted. Since the driving pulley 62 has two pulley surfaces as shown in FIG. 3, the first wire 64 and the second wire 66 are fitted to each pulley surface so that they do not interfere with each other. In this state, when the drive pulley 62 rotates in the direction of the arrow k, the first and second wires 64 and 66 simultaneously move in the direction of the arrow m to space the hanger plate 16.

The door rails 54 fixed to the lower portions of the first and second wires 64 and 66 extend horizontally as members having a predetermined width and thickness, so that the guide rollers 72 installed on the hanger plates 16 are formed. Guide the reciprocating motion. The buffer rubber 56 is fixed to both ends of the door rail 54. The buffer rubber 56 serves as a stopper for preventing the hanger plate 16 from being separated from the outside of the door rail 54.

Meanwhile, the hanger plate 16 positioned below the first wire 64 is fixed to the first wire 64 through the first fixing bracket 68 and the hanger plate positioned below the second wire 66. 16 is fixed to the second wire 66 through the second fixing bracket (70).

In fixing the first fixing bracket 68 and the second fixing bracket 70 to the first wire 64 and the second wire 66, respectively, the door panel 14 when the driving pulley 62 is rotated. In order to be able to move forward and backward, the first fixing bracket 68 is coupled to the lower row of the two rows of first wires arranged in parallel. In addition, the second fixing bracket 70 is coupled to the upper row of the two wires of the two lines arranged in parallel.

As a result, in the opening and closing device of the present embodiment, since the two independent wires are used to open and close the door panel 14 on both sides, the tensile stress applied to the wires 64 and 66 is reduced to half of the conventional case. That is, in the conventional switchgear, the two ends of the first and second wires 30 and 32 are connected to each other in one row, and the two door panels are moved in one wire. Since only the door panel is moved, the tensile stress applied to the wire is so small.

Since the tensile stress is relatively small, there is no fear of the wire stretching and thus the wire does not slip against each loose side.

In addition, in the present embodiment, since two wires are applied, even if the wire is cut due to abnormal strong tensile stress, the two wires will not be cut at the same time, so that one door panel can be opened and closed.

3 is a cross-sectional view taken along the line III-III of FIG. 2.

The same reference numerals as the above reference numerals refer to the same members having the same function, and a description thereof will be omitted.

As shown, the back of the mounting plate 52 is provided with a motor 76, an electric pulley 80 and a controller 84. The motor 76 is installed horizontally, for example by any motor support 78 and its operation is controlled by the controller 84. The control of the motor 76 by the controller 84 is in accordance with the conventional general method,

The drive shaft of the motor 76 and the electric pulley 80 are connected by an electric belt 82. The electric pulley 80 is a general pulley whose diameter should be larger than the driving pulley 62. Preferably, the diameter of the electric pulley 80 is to be about 2 to 3 times the diameter of the drive pulley 62. In addition, the transmission belt 82 may be applied to any belt including a metal wire as long as it can transmit power.

On the other hand, the rotating shaft of the electric pulley 80 is fixed to the center of rotation of the drive pulley 62 through the mounting plate 52. Therefore, when the motor 76 starts to operate, the electric pulley 80 and the driving pulley 62 may rotate at the same time to open and close the door panel 14.

Figure 4 is a view schematically showing the back of the elevator door opening and closing apparatus according to an embodiment of the present invention.

As shown, the electric pulley 80 is rotatably installed at the center of the rear surface of the mounting plate 52. The center of rotation of the electric pulley 80 is connected to the driving pulley (62 in FIG. 2) through the mounting plate 52 as described above. In addition, the motor 76 provided on the side of the electric pulley 80 is connected to the electric pulley 80 through the electric belt 82.

As a result, in the elevator door opening and closing apparatus of the present embodiment made as described above, when the motor 76 is operated by the controller 84, the rotational force of the motor 76 moves to the driving pulley 62 through the electric pulley 80. The first and second wires 64 and 66 are transferred to the hanger plate 16 to open or close the door panels 14 on both sides.

The present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. .

Elevator door opening and closing device of the present invention made as described above, by applying two wires to open or close the two door panels, one wire is responsible for the movement of one door panel, the tensile force applied to the wire is small Therefore, there is no fear of the wire hanging down, and the wire does not run against the pulley so that the opening and closing of the door panel can be made precisely. Also, since two wires are applied, the other wire can operate even if one wire is cut, for example. Can be opened or closed normally.

Claims (3)

A pair of door panels are fixed to the upper part of the frame that can be retracted therein, a strip-shaped door rail fixed to one side of the mounting plate and extending horizontally, the door in a state supported by the door rail In the elevator door opening and closing device comprising a pair of hanger plate which is movable along the rail and fixed to the bottom of the door panel, respectively, and opening and closing means for the door panel to be opened or closed by mutually moving the hanger plate. , The opening and closing means; A first driven pulley 58 and a second driven pulley 60 installed rotatably on one side of the mounting plate 52 and spaced apart from each other by the length of the door rail 54; A drive pulley 62 installed rotatably between the first and second driven pulleys 58 and 60 and having two pulley surfaces; A first wire 64 coupled to one hanger plate 16 by winding one pulley surface of the first driven pulley 58 and the driving pulley 62 to be wound; A second wire 66 coupled to the other hanger plate 16 by winding the other pulley surface of the driving pulley 62 and the second driven pulley 60 to be wound; Elevator door opening and closing device comprising a drive pulley rotating means for rotating the drive pulley (62). The method of claim 1, The drive pulley rotating means; A rotating member which is provided on the other side of the mounting plate 52 and whose central axis passes through the mounting plate 52 and is connected to the central axis of the driving pulley 62; Elevator door opening and closing device characterized in that it comprises a motor (76) installed on the side of the rotating member to rotate the rotating member. The method of claim 2, The rotating member is an electric pulley (80) having a pulley surface on its outer peripheral surface, elevator door opening and closing device, characterized in that the electric belt 82 is connected between the drive shaft of the motor (76) and the electric pulley (80).