KR20030086665A - Overhead door system - Google Patents

Abstract

PURPOSE: An overhead door system is provided to open and close a door by hand easily when a driving motor stops, and to open and close a door with minimum force and at high speed. CONSTITUTION: The overhead door system comprises: a door panel(201) composed of many rectangular unit door members; a driving motor(202) supplying driving force for opening and closing movement by ascending and descending a door panel; a control panel(203) connected to the driving motor(202) electrically and composed of a circuit unit and a switch for driving/stopping a motor and controlling forward/backward rotation; a vertical/horizontal track(204) guiding the ascending and descending movement of the door panel(201); a guide roller(205) connecting the vertical/horizontal track with a door body and guiding the ascending and descending movement of the door panel(201); a photo sensor(206) sensing an obstacle placed when the door panel is descending, then transferring the sensed signals to the control panel(203); a cable drum(207) winding or unwinding a cable connected to the door panel(201) to make the ascending and descending movement of the door panel possible by the rotation of the motor; and a torsion spring(208) opening and closing a door easily by torsion force corresponded to the winding and unwinding degree of the cable.

Description

Overhead door system

The present invention relates to an overhead door system, and more particularly, is installed in an entrance of a factory or a warehouse of a general building or an industrial site, and performs one door function. An overhead door system configured to be operated at high speed with minimal force in a precise weight balance according to position.

In the conventional electric shutter door system, as shown in FIG. 1, a first sprocket 102 is installed on the drive shaft of the motor 101, and a larger sprocket for controlling the rotational speed while transmitting power thereto. A second sprocket 104 having a diameter is installed to be connected to the first sprocket 102 by the first chain 103, and is relatively relatively to one side of the sprocket shaft 111 that fixes the second sprocket 104. A third sprocket 105 having a smaller diameter is installed, and the one end portion of the fixed shaft 108 of the shutter drum 109, which opens and closes the shutter bar 110 up and down, has a diameter relatively larger than that of the third sprocket 105. The large fourth sprocket 107 is provided and connected to the third sprocket 105 by the second chain 106.

In the conventional electric shutter door system having the above structure, as the motor 101 rotates forward or reverse, its rotational momentum is the first sprocket 102 → the first chain 103 → the second sprocket 104. → the sprocket shaft 111 → the third sprocket 105 → the second chain 106 → the fourth sprocket 107 → the shutter drum fixed shaft 108 in order, and then finally the shutter drum 109 As the rotation or reverse rotation, the shutter bar 110 is raised and opened or lowered and closed.

By the way, in the conventional electric shutter door system as described above, the shutter drum 109 and its fixed shaft 108 are integrally formed, and the fourth sprocket 107 is provided at one end of the fixed shaft 108. A power transmission mechanism between the first and second sprockets 102 and 106 and the second and third sprockets 104 and 105 between the first and second sprockets 102 provided on the drive shaft of the motor 101. This complicated structure has a problem that it is difficult to manually open and close the shutter bar 110 at the time of failure of the motor 101 or when the power supply is cut off so that the motor 101 cannot be operated.

In addition, the opening and closing speed of the shutter bar 110 is always constant, a lot of time is required to open and close the door, there is a problem that the work efficiency is reduced when there is frequent entry and exit.

The present invention was created in view of the problems in the conventional shutter-type door system as described above, it is possible to open and close the door without difficulty even manually when the drive motor that provides the driving force for opening and closing the door, door panel The object of the present invention is to provide an overhead door system capable of operating at high speed with minimal force in a state where weight is precisely balanced according to the weight and opening / closing position thereof.

1 is a view schematically showing the configuration of a conventional electric shutter door system.

Figure 2 is a rear perspective view showing the overall configuration of the overhead door system according to the present invention.

Figure 3 is a side cross-sectional view showing the installation structure of the door panel and the vertical / horizontal track of the overhead door system according to the present invention.

4 is a view showing various devices (apparatus) and parts installed in the control panel of the overhead door system according to the present invention.

5 is a schematic diagram of a power supply from an external supply power to a drive motor and various controllers in an overhead door system according to the present invention;

6 to 8c are diagrams showing the circuit connection relationship of various relays, limit switches and sensors connected to the terminal block of the controller board of the overhead door system according to the present invention.

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

101 ... motor 102 ... first sprocket

103 ... 1st chain 104 ... 2nd sprocket

105 ... 3rd sprocket 106 ... 2nd chain

107 ... 4th sprocket 108 ... Shutter drum fixed shaft

109 ... shutter drum 110 ... shutter bar

201 ... door panel 202 ... drive motor

203 ... Control Panel 204 ... Vertical / Horizontal Track

205 ... Guide roller 206 ... Photo sensor (safety sensor)

207 Cable drum 208 Torsion spring

209 Cable breaker 210 Contact sensitive sensor

211.Lower seal 212 ... Perspective window

213 Push-down spring 214 Upper seal

215 Hinge 216 Gearbox Shaft

217 ... shaft coupler 410 ... controller board

411 ... Transformer 412 ... Brake resistor

413,414,415,460 ... Terminal Block 420 ... Inverter

430 ... AC / DC converter 440 ... Loop detector socket

450 ... brake relay

In order to achieve the above object, the overhead door system according to the present invention,

A door panel comprising a plurality of rectangular unit door members coupled to each other so that their joint portions can be folded, respectively, to form a complete door body;

A drive motor installed in close proximity to one side of an upper end of the door panel and providing a driving force for opening and closing operation by raising and lowering the door panel;

A control panel electrically connected to the drive motor and provided with a circuit unit and an operation switch for driving and stopping the motor and controlling forward / reverse rotation;

Vertical / horizontal tracks provided in a vertical and horizontal continuous joint structure along both edge portions of the door panel and for guiding the lifting and lowering operation of the door panel;

A plurality of guide rollers connected to the vertical / horizontal tracks and the door main body, the plurality of guide rollers being installed side by side at predetermined intervals on both sides of the door panel, and guiding the lifting and lowering operation of the door panel;

A photo sensor provided at a predetermined height from a bottom surface of the vertical track portion of the vertical / horizontal track and detecting an obstacle that intervenes when the door panel is lowered and transmitting a detection signal to the control panel;

Each of the vertical track parts of the vertical / horizontal tracks is installed at the upper gears of the rotational shift gear shaft of the motor with the same axis, and the door panel is capable of raising and lowering the door panel according to the forward / reverse rotation of the motor. A cable drum to which the hoisting cable is connected and wound up; And

At least one is installed on the rotation gear shaft of the motor, and according to the degree of the winding and unwinding of the hoisting cable, the tension of the hoisting cable is always applied to the hoisting cable so that the door is easy even with a small force. Its feature is that it comprises a torsion spring that can be opened and closed.

Here, preferably, a cable release prevention device is further provided on both sides of the lower end of the door panel to prevent the hoisting cable from being separated from the cable drum.

In addition, a contact sensitive sensor for detecting a contact with an obstacle when the door descends and transmitting a corresponding signal to the control panel is installed at one side of the lower end of the door panel.

In addition, one side of the inner end of the horizontal track portion of the vertical / horizontal track, the door is opened at a relatively higher speed than when the door is closed when the door is opened, the rising edge of the door hits the inner end of the horizontal track portion with excessive force And a push down spring is further installed to gently push the door panel when the door is closed to prevent the cable from coming off the cable drum.

In addition, a predetermined portion of the door panel is further provided with a viewing window for skylight or perspective into the interior of the building is installed door.

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

2 and 3 show the overhead door system according to the present invention, Figure 2 is a rear perspective view showing the overall configuration, Figure 3 is a side cross-sectional view.

2 and 3, the overhead door system according to the present invention includes a door panel 201, a drive motor 202, a control panel 203, a vertical / horizontal track 204, a guide roller 205, A photo sensor 206, a cable drum 207, and a torsion spring 208.

The door panel 201 is a plurality of rectangular unit door members are coupled to each other so that the joint portion can be folded to form a complete door body as a whole. The door panel 201 is formed by rolling a galvanized iron plate or an aluminum plate and simultaneously filling glass wool with an insulating panel, an iron plate, or an aluminum perforated plate that foams, fills, and bonds high-density polyurethane insulation. A plurality of unit door members, which are any one of a sound absorbing panel, a transparent panel in which an aluminum chassis frame and a transparent window are combined, are configured by a hinge 215. Therefore, the engaging portion of the unit door members can bend.

Here, preferably, the cable release preventer 209 is further provided on both side surfaces of the lower end of the door panel 201 to prevent the hoisting cable from being separated from the cable drum 207. In addition, a contact sensitive sensor 210 for detecting a contact with an obstacle when the door descends and transmitting a corresponding signal to the control panel 203 is installed at one side of the lower end of the door panel 201. The lower end of the door panel 201 is further provided with a lower seal 211 for absorbing impact with the ground of the lower end of the door and blocking external air. In addition, a predetermined portion of the door panel 201 is further provided with a see-through window 212 for lighting or perspective into the interior of the building is installed door.

The drive motor 202 is installed in close proximity to one side of the upper end of the door panel 201, and provides a driving force for the opening and closing operation by the lifting and lowering of the door panel 201. Here, as the drive motor 202, a worm geared motor may be used, in which a gear shifting device 202g is installed on the shaft of the motor to shift the high speed to a certain low speed. .

The control panel 203 is electrically connected to the drive motor 202 and includes a circuit part and an operation switch for driving and stopping the motor 203 and controlling forward / reverse rotation.

The vertical / horizontal track 204 is provided in a continuous joint structure vertically and horizontally along both edge portions of the door panel 201, and serves to guide the lifting and lowering operation of the door panel 201. Here, at one side of the inner end of the horizontal track portion of the vertical / horizontal track 204, as the door is opened at a relatively higher speed than when the door is closed when the door is opened, the ascending leading edge of the door is positioned on the horizontal track portion. Push down springs 213 are further installed to prevent impingement of excessive force on the inner end and to gently push the door panel 201 when the door is closed to prevent the cable from leaving the cable drum 207. In addition, in the space between the upper end of the vertical track portion of the vertical / horizontal track 204 and the head portion where the cable drum 207 and the torsion springs 208 are installed, an upper seal 214 for blocking external air is provided. More prepared.

The guide rollers 205 are installed on both side edges of the door panel 201 spaced apart from each other at predetermined intervals to connect the vertical / horizontal tracks 204 and the door body, and the door panel 201 is raised and lowered. Guide the operation.

The photo sensor 206 is provided at a predetermined height from a bottom surface of the vertical track portion of the vertical / horizontal track 204, and detects an obstacle that is involved when the door panel 201 descends to control the detection signal. Transmit to panel 203.

The cable drums 207 are respectively installed at the upper end portions of both vertical track portions of the vertical / horizontal track 204 with the rotation shift gear shaft 216 of the drive motor 202 as the same axis, and the motor 202. In accordance with the forward / reverse rotation), the hoisting cable connected to the door panel 201 is wound and unwound to enable the door panel 201 to be raised and lowered.

The torsion spring 208 is installed on at least one (two in this embodiment) on the rotational gear shaft 216 of the drive motor 202, corresponding to the degree of the winding and unwinding of the hoisting cable The tension of the hoisting cable is always applied to a certain amount of tension so that the door can be easily opened and closed with a small force. Reference numeral 217 denotes a shaft coupler connecting the shaft to the shaft.

On the other hand, Figure 4 shows a variety of devices (apparatus) and parts installed in the control panel 203, as shown, the control panel 203, the CPU (not shown) to control the system as a whole The controller board 410 is installed, the inverter 420 for controlling the rotational speed of the drive motor 202, and the driving power of various controllers installed in the system are supplied. An AC / DC converter 430 for converting to direct current, a loop detector socket 440 (optional), a brake relay 450, a terminal block 460, and the like are provided. In particular, the controller board 410 includes a transformer 411 for stepping down AC 220V supplied from the outside to AC 24V, a braking resistor 412 and circuit terminals related to on / off of various sensors, limit switches, and relay contacts. Terminal blocks 413, 414 and 415 for connection are packaged and installed to form one component as a whole.

5 to 8c illustrate the main circuit components of the overhead door system according to the present invention. FIG. 5 is a schematic view showing a mechanism for supplying power to a drive motor and various controllers from an external supply power, and FIG. 6. 8C are diagrams illustrating a circuit connection relationship between various relays, limit switches, and sensors connected to the terminal block of the controller board.

Referring to FIG. 5, a three-phase 220V (also used for single-phase 220V or three-phase 380V) is used as an external power source, and the power is directly transmitted to the inverter 420 via the cam switch 501. In addition, the R phase and the T phase are supplied to the transformer 411 among the three phases R, S, and T, and an AC 24V is generated by the transformer 411, and the AC 24V is again an AC / DC converter (bridge diode). 430 is converted into DC 24V and supplied to the control power supply of the overhead door system of the present invention.

The basic circuit of the control is composed of eight relays, two timers and a brake control relay, and optionally, a timer for controlling the running time of the motor at the second deceleration (the lowering of the door) may be additionally installed. In addition, auxiliary limit switches and sensors can be added for the protection and safety of the door.

6 illustrates a circuit connection relationship of the X1-terminal block 413 of the controller board 410. As shown in FIG. 6, the X1-terminal block 413 is generated by the AC / DC converter 430. A DC 24V supply line, a brake resistor and a warning lamp are connected. In addition, signal lines and a start sensor for first deceleration and second deceleration control when the door descends are connected.

FIG. 7 shows the circuit connection relationship of the X2-terminal block 414 of the controller board 410. As shown, the terminal block 414 has a manual (MAN), automatic (AUTO), and STOP (STOP). ), The common contact COM, the door open (OPEN), the relay contact associated with the door closed (CLOSE) and the common connection line are connected.

8A to 8C show a circuit connection relationship of the Y1-terminal block 415 of the controller board 410. As shown, the terminal block 415 has a supply line of DC 24V and a motor 202. As shown in FIG. Relay contacts to prevent overheating, relay contacts for other safety devices, relay contacts for opening and closing of exits, door open and close limit switches, start sensors, safety photo sensors, contact sensitive sensors, door open and close The deceleration limit switch at the time, the connection line with the said inverter 420, auxiliary opening, a cloth limit switch, etc. are connected.

Then, the operation of the overhead door system according to the present invention having the above configuration will be briefly described.

First, in the door open operation, when the open command signal by the door open switch pressed by the user (driver) enters through the open limit switch and the auxiliary limit switch in FIGS. 8A to 8C, the driving motor 202 Is activated and the door is opened accordingly. That is, when the open signal is input at the first time, the relay connects ON the terminal of "COM + FX + P1" of the inverter 420 so that the door rises at the highest speed. At this time, the maximum speed may be changed in the first step mode (st1 MODE).

In this way, if the limit switch or sensor has been set while the door is rising at the highest speed, the door will slow down as the P1 terminal is disconnected. The speed at this time can be changed in "drv mode". If it is maintained at a decelerated speed and detected by an upper limit switch or sensor, the door will stop with "COM" and "FX" falling.

In the door close operation, the close command signal is sent to the inverter 420 through the close limit switch and the auxiliary limit switch in FIGS. 8A to 8C as in the door open operation. Then, the driving motor 202 is operated according to the control function of the inverter 420, whereby the door is closed while accelerating. In this process, when the door reaches the cloth deceleration limit switch (see FIG. 8B), the deceleration process is performed, whereby the closing speed of the door is reduced. When the door reaches the cloth limit switch, the door stops.

On the other hand, the operation in the automatic mode can be controlled using a variety of sensors. That is, the door can be opened by using a motion detector or a loop detector. When these start sensors operate, an open signal is sent to the controller board 410, and then the door is opened while going through the open process described above. In the automatic mode of the door as described above, the door is automatically closed after a few seconds have elapsed after the door is opened. This can be done by setting in advance by the timer. At this time, of course, the timer does not operate while the start sensor is sensing.

In the series of processes related to the opening and closing operations of the door as described above, if an obstacle is detected by the safety sensor while the door is closed, the door is opened again after stopping. In other words, during operation of the safety sensor the detection signal is transmitted to the open keeping of the door, so that the first cloth signal is transmitted back to the open signal. At this time, before the door is opened to pass the timer to prevent the reverse turn to protect the motor.

As described above, in the overhead door system according to the present invention, since the opening and closing of the door is made by winding and unwinding the cable according to the forward / reverse rotation of the cable drum, the driving motor for providing a driving force for opening and closing the door The door can be opened and closed easily without stopping, and it is composed of a system capable of operating at high speed with minimal force in a state where weight balance is precisely made according to the weight and opening position of the door panel, and thus the overhead of the present invention. When the door system is applied to industrial buildings such as manufacturing plants, industrial distribution centers, refrigeration warehouses, fire station garages, power plants, etc., or places where crime prevention, insulation, mining, airtightness and work efficiency of commercial buildings are required, It will be able to achieve an outstanding effect that cannot be achieved with conventional door systems.

Claims (8)

A door panel comprising a plurality of rectangular unit door members coupled to each other so that their joint portions can be folded, respectively, to form a complete door body; A drive motor installed in close proximity to one side of an upper end of the door panel and providing a driving force for opening and closing operation by raising and lowering the door panel; A control panel electrically connected to the drive motor and provided with a circuit unit and an operation switch for driving and stopping the motor and controlling forward / reverse rotation; Vertical / horizontal tracks provided in a vertical and horizontal continuous joint structure along both edge portions of the door panel and for guiding the lifting and lowering operation of the door panel; A plurality of guide rollers connected to the vertical / horizontal tracks and the door main body, the plurality of guide rollers being installed side by side at predetermined intervals on both sides of the door panel, and guiding the lifting and lowering operation of the door panel; A photo sensor provided at a predetermined height from a bottom surface of the vertical track portion of the vertical / horizontal track and detecting an obstacle that intervenes when the door panel is lowered and transmitting a detection signal to the control panel; Each of the vertical track parts of the vertical / horizontal tracks is installed at the upper gears of the rotational shift gear shaft of the motor with the same axis, and the door panel is capable of raising and lowering the door panel according to the forward / reverse rotation of the motor. A cable drum to which the hoisting cable is connected and wound up; And At least one is installed on the rotation gear shaft of the motor, and according to the degree of the winding and unwinding of the hoisting cable, the tension of the hoisting cable is always applied to the hoisting cable so that the door is opened with a small force. An overhead door system, comprising a torsion spring for easy opening and closing. The method of claim 1, The door panel is a roll-formed galvanized iron plate or an aluminum plate and at the same time an insulating panel that foams, fills, and bonds high-density polyurethane insulation, a sound-absorbing panel filled with glass wool in an iron or aluminum perforated plate, an aluminum chassis frame, and transparent An overhead door system comprising a structure in which a plurality of unit door members, which are one of the transparent panels combined with a window, are connected to each other by a hinge. The method of claim 1, Overhead door system, characterized in that each side of the lower end of the door panel is further provided with a cable release prevention for preventing the hoisting cable from being separated from the cable drum. The method of claim 1, At least one lower side of the door panel is an overhead door system, characterized in that the touch sensitive sensor for detecting a contact with the obstacle when the door descends and transmits a corresponding signal to the control panel. The method of claim 1, The lower end of the door panel is an overhead door system, characterized in that the lower seal for absorbing the impact with the ground at the bottom of the door while blocking the outside air is further provided. The method of claim 1, The overhead door system, characterized in that the predetermined portion of the door panel is further provided with a viewing window for skylight or perspective into the building inside the door is installed. The method of claim 1, On one side of the inner end of the horizontal track portion of the vertical / horizontal track prevents the rising end of the door from colliding with the inner end of the horizontal track portion with excessive force, and gently pushes the door panel when the door is closed, so that the cable drum Overhead door system, characterized in that the push down spring is further installed to prevent the cable from coming off. The method of claim 1, The overhead door system, characterized in that the top seal for blocking the outside air is further provided in the space between the upper end of the vertical track portion of the vertical / horizontal track and the head portion where the cable drum and the torsion springs are installed.