KR20090005803U - Sliding door switch - Google Patents

Abstract

The present invention relates to a sliding door opening and closing device. It is installed horizontally on the upper part of the door and has a first lead screw having a left screw thread or a right screw thread formed on an outer circumferential surface thereof, and is fixed to an end of the first lead screw and has the same center of rotation as that of the first lead screw. A transfer screw composed of a second lead screw having a thread opposite to a screw thread of the screw; A rail installed in parallel with the transfer screw; A plurality of rollers capable of reciprocating along the longitudinal direction of the rails while being supported by the rails, and connected to each of the rollers, respectively engaged with the first lead screw and the second lead screw, and are transported according to the axial rotation of the feed screw. A door carrier for conveying the screw in the longitudinal direction of the screw and a holding part for connecting and fixing the conveying part to the door, and moving the door by reciprocating along the longitudinal direction of the conveying screw when the screw is axially rotated; A controller for controlling the motor to adjust the rotational speed and the rotational direction of the transfer screw; It characterized in that it comprises a sensing unit for detecting the movement of the door and sending the detected content to the controller.

Sliding door, lead screw, sliding door, automatic opening and closing

Description

Sliding door opening and shutting device}

The present invention relates to a sliding door opening and closing device.

Compared to the sliding door, the sliding door can be configured to open or close automatically by applying various sensors and control devices, and it is very convenient. Also, since the door is not rotational, it is a sliding type, and there is no need for opening and closing the door. The large open area makes it suitable for opening and closing of large entrances such as warehouses and factories.

On the other hand, there are a wide variety of automatic sliding doors described above, most of which have wires or chains as opening and closing means for opening and closing the door.

Figure 1 shows an example of a conventional sliding door opening and closing device with a door.

Referring to the drawings, the conventional sliding door opening and closing device, the rail 26 is horizontally fixed to the mounting portion 12 of the frame 10 vertically supported by the wall of the building, and the upper both sides of the rail 26 First and second pulleys 30 and 32 rotatably installed on the wires, wires 28a and 28b connecting the first and second pulleys 30 and 32, and an upper portion of the mounting portion 12. And a motor 34 for generating rotational force by receiving electricity from the outside, and a driving wire 36 connecting the driving shaft of the motor 34 and the first pulley 30.

The frame 10 is made of steel, and is fixed to the inner surface of the wall of the building or may be installed inside the wall (when the building is invisible from the outside).

The frame 10 includes a door receiving part 14 having a rectangular frame shape and a mounting part 12 fixed to an upper part of the door receiving part 14 to support the motor 34, the rail 26, and the like. It is located in the center of the rectangular space provided by the door receiving portion 14 so that the entrance (A) of the building is aligned.

In any case, as shown in FIG. 1, the entrance A is blocked by a pair of doors 16. The door 16 moves in the direction of the arrow z to open the doorway A and moves in the opposite direction to block the doorway A.

The hanger plate 18 is fixed to the upper end of each of the doors 16. In addition, a plurality of rollers 24 are rotatably mounted on the hanger plate 18. The roller 24 is caught by the rail 26 to travel along the longitudinal direction of the rail 26 so that the door 16 is opened or closed.

In addition, the first and second connection brackets 20 and 22 are welded to the hanger plates 18 at both sides, respectively. The first and second connection brackets 20 and 22 are formed by bending the iron plate, and are connected to the first wire 28a and the second wire 28b.

Both ends of the first wire 28a and the second wire 28b are connected to the first and second connection brackets 20 and 22 so that the rotational torque of the motor 34 is adjusted to the first and second connection brackets 20 and 22. ) Serves to deliver.

Both ends of the first wire 28a are fixed to the first connection bracket 20 and the second connection bracket 22 in a state spanning the second pulley 32. In addition, both ends of the second wire 28b are fixed to the first connecting bracket 20 and the second connecting bracket 22 while being caught by the first pulley 30. The first and second wires 28a and 28b are tensioned by being pulled tight. In addition, the first pulley 30 is connected to the drive shaft of the motor 34 through the drive wire 36.

Accordingly, when the motor 34 is driven to rotate the drive wire 36 in the direction of arrow a, for example, the first and second wires 28a and 28b are pulled in the direction of arrow b to open the door. When the rotational direction of the drive shaft of the motor 34 is reversed, the door 16 is closed.

However, since the conventional sliding door opening and closing device made as described above has a structure in which the door 16 is pulled and moved by only one wire 28a, 28b, the tensile stress applied to the wire is very large and the wire 28a, 28b There was a problem that can be easily stretched.

As described above, when the wires 28a and 28b are slightly stretched, the door 16 may be opened or closed incorrectly. When the wires are turned against the pulleys 30 and 32, the door may not be closed or opened at all. You may not. In particular, when the door is an elevator door, not only the elevator may be used, but may also lead to personal accidents in some cases. In order to prevent this phenomenon, the conventional opening and closing device has a inconvenience in that the tension of the first and second wires 28a and 28b should be adjusted at any time.

The present invention has been made to solve the above problems, and since the lead screw is applied as a means for transporting the door, opening and closing of the door can always be realized accurately, as well as a belt or a chain for the power joint of the lead screw and the motor. The configuration is simple and light by connecting the lead screw directly to the motor without using the motor. Also, the door is opened and closed by simply rotating the lead screw. have.

Sliding door opening and closing device of the present invention for achieving the above object, Sliding door opening and closing device for opening and closing a pair of sliding door, the opening and closing device; It is installed horizontally on the upper portion of the door and extends in the longitudinal direction and rotates by receiving a rotational force from the motor, the first lead screw is formed with a left or right screw thread on the outer peripheral surface, the end of the first lead screw A conveying screw fixed to the second screw having a central axis of rotation similar to that of the first lead screw and having a thread formed in a direction opposite to that of the first lead screw; A rail installed in parallel with the transfer screw; A plurality of rollers capable of reciprocating along the longitudinal direction of the rails while being supported by the rails, and connected to each of the rollers, respectively engaged with the first lead screw and the second lead screw, and are transported according to the axial rotation of the feed screw. A door carrier for moving the door by reciprocating along the longitudinal direction of the transfer screw when the screw is rotated in the longitudinal direction of the screw, and the holding part connects and secures the transfer part and the door; A controller for controlling the motor to adjust the rotational speed and the rotational direction of the transfer screw; It characterized in that it comprises a sensing unit for detecting the movement of the door and sending the detected content to the controller.

In addition, the length of the first lead screw and the second lead screw is the same as each other, the door carrier is characterized in that at least two installed on the first lead screw and the second lead screw, respectively.

In addition, the sensing unit; And a plurality of sensors installed at the periphery of the rail, and a sensing unit provided at the door carrier and sensing the position by the sensor so that the sensor transmits the position of the door carrier to the controller.

In addition, one end of the transfer screw is fixed to the third lead screw having the same central axis of rotation as the transfer screw, the thread of the pitch smaller than the first and second lead screw is formed on the outer peripheral surface, the sensing unit; A transfer part which meshes with the third lead screw and reciprocates along the longitudinal direction of the third lead screw when the screw is axially rotated, simultaneously with the door carrier to simulate the reciprocating motion of the door carrier, and the third lead screw It characterized in that it comprises a plurality of sensors disposed in the vicinity of the, and the detection unit is installed in the transfer unit and the position is detected by the sensor to enable the sensor to transfer the position of the transfer unit to the controller.

In addition, the drive shaft and the feed screw of the motor is characterized in that it has the same rotation center axis in direct connection.

The present invention made as described above, since the lead screw is applied as a means for transporting the door can be accurately opened and closed, as well as the motor without using a belt or chain for the power joint of the lead screw and the motor. The lead screw is connected directly, so the configuration is simple and light, and the door is opened and closed by simply rotating the lead screw, which consumes little power.

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

2 is a block diagram showing the configuration of a sliding door opening and closing device according to an embodiment of the present invention.

Hereinafter, the same reference numerals as the above reference numerals denote the same members having the same function.

As shown, the sliding door opening and closing device according to the present embodiment, the transfer screw 50 is arranged horizontally rotatably on the mounting portion 12 of the frame 10, and one end of the transfer screw 50 Directly connected to the motor 56 to rotate the transfer screw 50 axially, the rail 46 is installed horizontally on the upper portion of the transfer screw 50, the rail 46 is supported on the transfer screw 50 ), A plurality of door carriers 48 reciprocating in the direction of the arrow z or vice versa, a controller 58 for controlling the rotational speed or the rotational direction of the motor 56, and the rail 46 It is installed in the vicinity and includes a plurality of sensors (60a, 60b) for detecting the fact that the door carrier 48 is moved and sends the detected content to the controller 58.

First, the transfer screw 50 is formed by threading a rod-shaped member having a constant diameter and is rotatably supported by three bearings 54. The bearing 54 is fixed to the mounting portion 12 while wrapping three bearing mounting portions (50c of FIG. 3) provided in the transfer screw 50 to rotatably support the transfer screw 50.

Referring to Figure 3 will be described first for the transfer screw 50.

Referring to Figure 3, it can be seen that the bearing mounting portion (50c) is provided in the substantially central portion and both ends of the transfer screw (50). The bearing mounting portion 50c is enclosed by the bearing 54 as a narrowly processed portion having a predetermined depth and width w. The bearing 54 is fixed to the mounting portion 12 in a state in which it is coupled to the bearing mounting portion 50c to axially support the transfer screw 50, and particularly restrains the transfer screw 50 from moving in the longitudinal direction.

In addition, a flange portion 50d is provided at the left end of the transfer screw 50 in the drawing. The flange portion 50d is a conventional shaft joint element for directly connecting the feed screw 50 to the drive shaft 56a of the motor (56 in FIG. 2). It is a matter of course that the opposite shaft portion corresponding to the flange portion 50d is also provided in the drive shaft of the motor.

On the other hand, the first lead screw 50a is formed on the left side and the second lead screw 50b is formed on the right side of the bearing mounting portion 50c based on the center bearing mounting portion 50c.

The first lead screw 50a and the second lead screw 50b are lead screws having the same length and pitch, but differ in the direction of the threads. That is, the screw thread of the 1st lead screw 50a is a right screw thread, and the screw thread of the 2nd lead screw 50b is a left screw thread.

As is known in the art, the right hand thread is a thread that is engaged when turned to the right, and the left hand thread is a thread that is engaged when turned to the left.

Anyway, since the pitch of the 1st lead screw 50a and the 2nd lead screw 50b is the same as mentioned above, when a lead (when the lead screw is rotated one revolution.), The nut which matches the lead screw moves. Linear distances) are the same.

Returning to FIG. 2 again, the description will be continued.

As shown in the drawing, the motor 56 is directly connected to the left end of the transfer screw 50. The motor 56 is a conventional motor that is operated by receiving power from the outside, it is preferable to use a reduction motor having a reducer therein. In particular, a flange 56b is provided on the drive shaft 56a of the motor and is coupled to the flange portion 50d of the transfer screw 50. By connecting the drive shaft 56a and the transfer screw 50 of the motor coaxially as described above, the rotational torque of the motor is directly transmitted to the transfer screw 50.

The rail 46 is horizontally fixed to the vertical upper portion of the transfer screw 50, and supports the door carrier 48 and the locking jaw (so that the roller portion 48a of the door carrier can move in the longitudinal direction) 46b) of FIG. Of course, the rail 46 is fixed to the mounting portion 12.

As shown in FIG. 4, the rail 46 is a beam having a cross-sectional shape of a c-shape opened downward, and a lower end thereof is bent inward to form a latching jaw 46b. The locking jaw 46b guides the door carrier 48 to reciprocate along the rail 46 by hanging the roller of the roller part 48a.

In addition, two through slits 46a are provided at an upper side of the rail 46. The through slit 46a is a through hole extending along the longitudinal direction of the rail 46 and passes upward through the sensing unit 48d to be described later. The length of the through slit 46a should be greater than the stroke distance (horizontal distance between the open and closed positions) of the door 16.

On the other hand, in the present embodiment, all four door carriers 48 are provided. Two of the four door carriers 48 are positioned on the first lead screw 50a side, and the other two are mounted on the second lead screw 50b side. The configuration of the door carrier 48 is the same.

The door carrier 48 is coupled to the transfer part 48b and the transfer part 48b to be engaged with the first lead screw 50a or the second lead screw 50b and extends upwardly to the rail 46. It consists of a roller portion (48a) that is held and supported, and a holding portion (48c) is fixed to the lower portion of the transfer portion (48b) and coupled to the upper end of the door (16). The holding part 48c serves to couple the transfer part 48b and the door 16.

In addition, as described above, since the directions of the threads of the first lead screw 50a and the second lead screw 50b are opposite, when the feed screw 50 is axially rotated in one direction, the left two door carriers 48 ) And the right two door carriers 48 move in opposite directions.

For example, when the two left door carriers 48 move to the left side, the right two door carriers 48 move to the right side. On the contrary, when the left two door carriers 48 move to the right side, the left two door carriers 48 move to the left side.

As a result, by controlling the motor 56 to switch the axial rotation direction of the transfer screw 50 can be blocked by opening the door in the z direction or moving in the opposite direction. In particular, by controlling the rotational speed of the motor through the control unit 58 may be adjusted to the opening and closing speed of the door. Techniques for controlling the rotational speed of a motor using a controller are common.

In addition, a sensing unit 48d is provided on two door carriers 48 located at the outer side of the four door carriers 48. The detector 48d is a member that passes upward through the through slit 46a of the rail 46 and extends above the rail 46. The sensor 48d is provided to the sensors 60a and 60b to be described later while reciprocating the through slit 46a. It is the object which the position is grasped by.

Two pairs of sensors 60a and 60b are provided on the rail 46. That is, a pair (two) sensors 60a and 60b are provided in the upper part of the left through slit 46a in figure, and a pair (two) sensor 60a in the upper part of the right through slit 46a. 60b).

The separation distance of the sensors 60a and 60b is equal to the stroke distance of the door. In addition, a detector 48d is positioned between the sensors 60a and 60b. The detection unit 48d allows the sensors 60a and 60b to know whether the door is open or closed while reciprocating between the sensors 60a and 60b as the door is opened and closed.

That is, as shown in FIG. 2, when the detector 48d reaches the sensor 60b, the sensor 60b detects the detector 48d, generates a door closing signal, and sends it to the controller 58. In addition, when the door 16 moves in the direction of the arrow z and reaches the opposite sensor 60a, the sensor 60a detects the detection unit 48d and sends the fact to the control unit 58.

The sensors 60a and 60b are not limited to the type as long as they can detect the arrival of the detector 48d. For example, a limit switch may be used, and an optical sensor, an infrared sensor, or a proximity sensor may be used.

The control unit 58 is installed on the side of the sliding door opening and closing device is open to the outside of the wall may be managed by the manager if necessary. It can also be covered with a cover, like a fire hydrant on the wall of a building or apartment.

The controller 58 controls the rotational direction or rotational speed of the drive shaft 56a of the motor 56. That is, the operation of the motor 56 is controlled based on the door opening or blocking signal input from the outside. The door opening or blocking signal is generated from a sensor provided at the upper end of the door entrance A, for example. Such signaling mechanisms are already widely used.

4 is an exploded perspective view of the rail and the door carrier shown in FIG.

As shown, the rail 46 has a cross-sectional shape of the c-shaped open to the bottom and has a locking jaw 46b bent inward to its lower end. The locking jaw 46b provides a driving path through which the roller of the roller portion 48a travels.

In addition, two through slits 46a are formed on the upper surface of the rail 46. The through slit 46a is a passage through which the detector 48d passes upward.

On the other hand, the door carrier 48 is provided in the upper portion of the transfer portion (48b) and the transfer portion (48b) that is engaged with the transfer screw 50 and receives a reciprocating transfer force in accordance with the axial rotation of the transfer screw (50). It consists of a roller part 48a and the holding part 48c fixed to the lower part of the said conveyance part 48b.

The conveying portion 48b has an approximately hexahedral shape and has a female screw hole 48e at its central portion. It goes without saying that the first lead screw 50a or the second lead screw 50b meshes with the female screw hole 48e. In addition, the roller portion 48a may be screwed to the transfer portion 48b to adjust the position of the transfer portion 48b.

5 is a view showing another example of a sliding door opening and closing device according to an embodiment of the present invention, Figure 6 is a configuration diagram showing a separate transfer screw and door opening and closing sensing unit of the sliding door opening and closing device shown in FIG. to be.

5 and 6, the door opening / closing sensing unit interlocked with the third lead screw 50e and the third lead screw 50e on the left side of the first lead screw 50a of the transfer screw 50 ( It can be seen that 64) is provided.

The third lead screw 50e is positioned between the flange portion 50d and the first lead screw 50a, and has a pitch smaller than that of the first lead screw 50a. The direction of the thread of the third lead screw 50e may be left or right. Importantly, the pitch of the threads is smaller than that of the first lead screw 50a, so that the lead of the transfer portion 64c must be smaller than the lead of the door carrier 48.

The door opening / closing sensing unit 64 includes a nut-shaped transfer unit 64c engaged with the third lead screw 50e, a detection unit 64b coupled to the transfer unit 64c and extending upward, and the detection. It is provided in the upper part of the portion 64b and consists of a roller portion 64a supported by the rail 46.

In addition, sensors 60a and 60b are provided at both sides of the sensing unit 64b. The sensors 60a and 60b are interlocked with the reciprocating sensing unit 64b and detect the arrival of the sensing unit 64b and send them to the controller.

In particular, the separation distance of the sensors 60a, 60b is related to the stroke distance of the door 16. That is, when the door 16 is closed, the sensing unit 64b is in contact with the sensor 60b on the right side, and when the door 16 is fully opened, the sensing unit 64b is disposed at an interval in contact with the sensor 60a on the left side. As a result, the door opening / closing sensor 64 simulates the operation of the door carrier 48 and the sensors 60a and 60b responding thereto, thereby determining the state of the door (in a narrow space).

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. .

1 is a view showing a conventional general sliding door opening and closing device.

2 is a block diagram showing the configuration of a sliding door opening and closing device according to an embodiment of the present invention.

Figure 3 is a view showing a separate transfer screw shown in FIG.

4 is an exploded perspective view of the rail and the door carrier shown in FIG.

5 is a view showing another example of a sliding door opening and closing device according to an embodiment of the present invention.

FIG. 6 is a configuration diagram separately illustrating a transfer screw and a door opening / closing sensing unit of the sliding door opening and closing device illustrated in FIG. 5.

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

10: frame 12: mounting portion 14: door receiving portion

16: Door 18: Hanger plate 20: First connection bracket

22: 2nd connecting bracket 24: Roller 26: Rail

28a: first wire 28b: second wire 30: first pulley

32: 2nd pulley 34: motor 36: drive wire

46: Rail 46a: Through slit 46b: Jammed jaw

48a: Roller part 48b: Transfer part 48c: Holding part

48d: detection part 48e: female thread hole 50: feed screw

50a: 1st lead screw 50b: 2nd lead screw 50c: bearing mounting part

50d: Flange part 50e: Third lead screw 54: Bearing

56: motor 56a: drive shaft 56b: flange

58: control unit 60a, 60b: sensor 64: door opening and closing sensor unit

64a: roller section 64b: detection section 64c: transfer section

Claims (5)

In the sliding door opening and closing device for opening and closing a pair of sliding doors, The opening and closing device is; It is installed horizontally on the upper portion of the door and extends in the longitudinal direction and rotates by receiving a rotational force from the motor, the first lead screw is formed with a left or right screw thread on the outer peripheral surface, the end of the first lead screw A conveying screw fixed to the second screw having a central axis of rotation similar to that of the first lead screw and having a thread formed in a direction opposite to that of the first lead screw; A rail installed in parallel with the transfer screw; A plurality of rollers capable of reciprocating along the longitudinal direction of the rails while being supported by the rails, and connected to each of the rollers, respectively engaged with the first lead screw and the second lead screw, and are transported according to the axial rotation of the feed screw. A door carrier for conveying the screw in the longitudinal direction of the screw and a holding part for connecting and fixing the conveying part to the door, and moving the door by reciprocating along the longitudinal direction of the conveying screw when the screw is axially rotated; A controller for controlling the motor to adjust the rotational speed and the rotational direction of the transfer screw; Sliding door opening and closing device characterized in that it comprises a sensing unit for detecting the movement of the door and sending the detected content to the controller. The method of claim 1, Sliding door opening and closing device, characterized in that the length of the first lead screw and the second lead screw is the same, and at least two door carriers are respectively installed on the first lead screw and the second lead screw. The method of claim 1, The sensing unit; A plurality of sensors installed around the rail, Sliding door opening and closing device is provided on the door carrier and comprises a sensor for sensing the position by the sensor to transmit the position of the door carrier to the controller. The method of claim 1, One end of the transfer screw is fixed to the third lead screw having the same central axis of rotation as the transfer screw, the thread of the pitch smaller than the first and second lead screw is formed on the outer peripheral surface thereof, The sensing unit; A transfer part engaged with the third lead screw and reciprocating along the longitudinal direction of the third lead screw when the screw is axially rotated, and simultaneously operating with the door carrier to simulate the reciprocating motion of the door carrier; A plurality of sensors arranged around the third lead screw; Sliding door opening and closing device is installed in the conveying unit and comprises a sensing unit for detecting the position by the sensor to enable the sensor to transfer the position of the conveying unit to the controller. The method of claim 1, The drive shaft and the transfer screw of the motor is a sliding door opening and closing device characterized in that it has the same rotation center axis.

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