KR200286457Y1 - Driving device for auto door - Google Patents

Abstract

The present invention relates to a drive device for an automatic swing door to automatically open and close the swing door that is opened and closed.

Automatic swing door of the present invention, the upper side of the door is made of a passive hinge for supporting the door to the door frame, the other lower side is provided with a drive mechanism for turning the door installed on one side of the door frame frame for opening and closing the door in the opening and closing manner. A drive device for an automatic swing door, the door drive mechanism comprising: a drive motor for providing a rotational force to the door at a position concealed from the door frame; A worm gear that receives a rotational force from the drive motor; A transmission member engaged with the drive shaft of the worm gear and arranged coaxially with the drive shaft of the worm gear to rotate in conjunction with the rotation of the worm gear; And a friction member coupled coaxially with the transmission member such that the clutch is engaged by the friction force elastically pressurized and frictionally coupled through the spring with the transmission member, and the friction member is coupled to the door and coupled to the shaft. It is axially coupled to one end of the beam structure disposed inside the door frame to transfer the rotational force generated to the door to the door, and is due to the lack of external shock absorption capability of the direct driven power transmission system between the conventional driven member and the driving source. This eliminates the risk of injuries.

Description

Driving device for automatic swing door {Driving device for auto door}

The present invention relates to a drive mechanism for an automatic swing door, and in particular, a friction clutch driven type that eliminates the possibility of an injured person due to a lack of external shock absorbing ability of a direct driven power transmission system between a conventional driven member and a driving source. The present invention relates to an automatic swing door drive system using a power transmission system.

In general, the door is opened and closed, the main component is composed of a door frame (2) for supporting the door and a support for supporting the door (1) in the door frame (2) consists of a structure in which the door is rotated in the door frame do. The part which rotatably supports the door 1 to the door frame 2 is the hinge part 3 which becomes a fixed point which fixes the door 1 to the door frame 2, and this hinge part 3 is It is comprised in the upper and lower parts which the door frame 2 touches, and it becomes a part which supports the door 1 rotatably. Therefore, when the door is pushed or pulled, the door shows a repeating operation of opening or closing the doorway by turning the hinge portion 3 to the axis.

Such a hinge rotation center type swing door supports the door 1 to the upper and lower hinge portions 3 so as to be rotatable to the door frame 2 supporting the swing door 1 so that the swing door is centered on the door frame 2. It is a structure that rotates the door 2 by providing a rotational structure and providing a rotational driving force in the center of one hinge axis, and including the position detecting elements (S1 to S4, see FIG. 4) of the door 1 as a peripheral component It is structured to control the drive motor 5 which turns the branch part 3.

The swing door is composed of a passive hinge part 3 which supports the door 1 on the door frame 2, and the upper and lower doors of the hinge part 3, wherein the hinge part of the selected hinge part 3 rotates the door. The drive unit 4 is a drive motor 5, which provides a rotational force to the door in a position concealed from the door frame 2, by connecting the shaft 6 of the drive motor 5 to the door 1 A beam structure 8, a driving motor, which is coupled to the door frame 7 and fixed to the frame 7 by the supporter 9 so as to transmit the rotational force generated about the shaft 6 to the door 1. 5) and a support which allows the coupling between the door 1 and the beam structure 8 to be a rotational coupling about the axis 6 of the drive motor 5.

The drive unit 4 is positioned in the lower frame 7 of the door frame 2 to support the door 1 in position, and the support unit is arranged to eliminate rotational friction between the door frame 2 and the shaft 6. Rotating bush 10 is mounted on (6), thrust bearings (11) are mounted to support the rotating bush (10) and to support the vertical load transmitted through the shaft (6). A buffer bush may be additionally installed between the thrust bearings 11 (see FIGS. 1 to 3).

Position detection elements (S1 to S4) of the door (1), as shown in Figure 4, the door image to detect the position of the door (1) returning to the center of the hinge portion 3 and the shaft (6) inside and outside To control the sector amount of the detection sensor (S1 ~ S4) to set the lower position to detect the opening and closing time of the door (1), and the door (1) appearing according to the rotation amount of the shaft (6) of the drive motor (5) In order to control the forward and reverse rotation of the drive motor 5, the detection sensor S5 is disposed at the periphery of the drive motor to send a detected signal to the controller to control the opening and closing timing of the door 1 and the rotation of the drive motor 5. do.

The conventional swing door configured as described above has a hinge portion 3 supporting the door as shown in FIG. 1, and a lower portion of the door 1 can move the door by automatically rotating the door. By configuring it as (4), it becomes possible to adjust the rotation timing and rotation angle of the door 1 automatically.

However, when the door is directly connected to the conventional drive motor, and an external force such as a person pushing through the door by hand is applied during operation of the drive motor, the external force is applied to the drive motor as it is, and the drive motor is excessively exerted. The occurrence of a load implies the disadvantage of impairing the reliability of the drive motor.

In other words, the power transmission system between the drive shaft of the motor, which is a conventional power source, and the door is directly integrated, and the external shock is not easily absorbed. It was.

In addition, when the door opening and closing operation is necessary, it is necessary to secure the space for the installation of the excessive size of the driving motor, for example, to increase the set number of horsepower of the driving motor in preparation for excessive initial driving force for opening and closing the door. Was inconvenient to do.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is that a person may be injured due to a lack of external shock absorbing capability of a direct drive power transmission system between a conventional driven member and a driving source. The present invention provides a drive system for an automatic swing door applying a friction clutch driven power transmission system.

1 is a schematic view showing a conventional automatic swing door structure.

Figure 2 is a detailed view of the main portion of a conventional automatic swing door.

Figure 3 is a longitudinal sectional view of the main portion of a conventional automatic swing door.

Figure 4 is a view for explaining the operating state of the swing door to show a conventional swing door driver.

5 is a perspective view of a driving device of the automatic swing door of the present invention.

Figure 6 is a longitudinal cross-sectional view of the drive device of the present invention according to the line A-A of Figure 5. Figure 7 is an exploded perspective view of the drive device of the automatic swing door according to the present invention.

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

1: door 2: door frame

3: hinge portion 4: driving portion

5: drive motor 6: shaft

7 frame 8: beam structure

9: supporter 10: rotating bush

11: thrust bearing 20: worm gear

30: transmission member 40: spring

50: friction member 60: tap bolt

In order to realize this, the present invention, the lower one of the upper door is made of a passive hinge portion for supporting the door to the door frame, the other side of the door rotation drive mechanism installed on one side of the door frame frame to open and close the door In the automatic swing door drive device provided with,

The door drive mechanism,

A drive motor for providing rotational force to the door in a position concealed from the door frame;

A worm gear that receives a rotational force from the drive motor;

A transmission member engaged with the drive shaft of the worm gear and arranged coaxially with the drive shaft of the worm gear to rotate in conjunction with the rotation of the worm gear;

And a friction member coaxially coupled with the transmission member so that the clutch is coupled by the friction force elastically pressurized and frictionally coupled through the transmission member and a spring,

The friction member is coupled to the door and coupled to one end of the beam structure disposed inside the door frame for transmitting the rotational force generated around the shaft to the door, characterized in that the shaft.

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

In the description of the present invention, the same or equivalent parts as in the prior art will be described with the same reference numerals. Figure 5 is a perspective view of a drive device of the automatic swing door of the present invention, Figure 6 is a longitudinal cross-sectional view of the drive device of the present invention according to the line A-A of FIG.

First, the present invention is made of a passive hinge portion for supporting the door to the door frame on the upper side of the door, the lower one includes a drive mechanism for rotating the door installed on one side of the door frame frame to open and close the door.

Here, the drive motor 5 of the drive mechanism for rotating the door is preferably installed invisible on the floor by selecting a lower floor of the door 1 or a part of the door frame.

In addition, as shown in Figure 6, the rotation shaft 20a of the drive motor 5 is made of a worm.

In addition, a worm wheel 20b receiving a rotational force from a rotational 20a formed of a worm of the drive motor 5 is rotatably supported inside the main body 100 on the rotation shaft of the drive motor 5.

In addition, the inner side of the protrusion 20c of the worm wheel 20b constituting the worm gear 20 together with the worm 20a is engaged with a drive shaft that forms the center of rotation of the worm wheel 20b, thereby rotating the worm gear 20. The transmission member 30 which rotates in conjunction with is arranged coaxially with the drive shaft of the worm wheel 20b.

In addition, the friction member 50 is coupled to the transmission member 30 so that the clutch is engaged by a friction force that is elastically pressurized by frictional coupling through the transmission member 30 and the spring 40. 30) and coaxially coupled.

In addition, the friction member 50 is coupled to the door (1), the beam structure (8) disposed inside the lower frame of the door (1) for coupling to the door 1 to transmit the rotational force generated in the center of the drive shaft ) Is axially coupled to one end.

In addition, the friction clutch coupling is made of abutment of the mutually facing surfaces of the inner stepped portion 50a of the lower end of the friction member 50 and the flange portion 30a of the upper end of the transmission member 30, this contact The friction member 50 is pressurized by a compression spring 40 in which elastic force is adjustable by the tab bolt 60.

The inner hollow portion of the drive shaft formed by the transmission member 30, the friction member 50, and the worm wheel 20b is directly interlocked with the rotation of the door 1 separately from the drive shaft which is in contact with the friction by sliding the predetermined value. The sensor shaft 70 is rotatably coupled to one end of the rotation sensor 80 for sensing the rotation amount of the beam structure (8).

On the other hand, among the reference numerals, which are not illustrated, reference numeral 11 denotes a thrust bearing interposed between the elements so as to restrict mechanical wear and rotational restraint caused during the celebration of the load when the load of the door 1 generated around the drive shaft is applied. Reference numeral 80 is a coupling block fixedly coupled to the lower part of the door 1 to support the friction member 50 and the beam structure 8 to the door 1, the reference numeral 110 denotes the rotation sensor 110 It is a support member for securing the installation space and for supporting the elements constituting the drive shaft.

Next, the operation of the present invention around the above components will be described.

First, the person detects the person by the object detection sensor (usually, adopting an optical sensor) installed on the upper part of the door frame for access through the door.

Subsequently, based on the sensed signal, the controller sends out power for operating the drive motor 5 to open the door.

At this time, the door 1 is rotated using the lower frame or the bottom structure of the door frame 2 as a hinge support point.

Here, mechanically, when the driving motor 5 rotates, the rotational force rotates in conjunction with the worm gear 20 including the worm 20a and the worm wheel 20b.

Further, when the worm gear 20 rotates, the transmission member 30 of the flange 30a, which is inserted and fixed to the hexagonal cross-sectional receiving portion 21 in the protrusion 20c of the worm wheel 20b, is rotated. Due to the hexagonal section 30b having a hexagonal cross section at the bottom, the transmission member 30 is interlocked.

In addition, when the transmission member 30 is rotated, due to the friction force acting by the flange portion 30a of the transmission member 30 in pressure contact with the stepped portion 50a of the friction member 50, The friction member 50 is rotated.

In addition, when the friction member 50 is rotated, the coupling block 80 having the sleeve 81 coupled thereto and the beam structure 8 are interlocked and rotated to open and open the door 1. will be.

Here, at the lower end of the door (1), the beam structure (8) is long in the horizontal direction as the structure is coupled to the drive shaft composed of the worm wheel, the transmission member and the friction member of the drive motor (5) Therefore, the rotational force of the driving motor 5 is generated evenly over the entire area of the lower end portion D of the door 1 through the beam structure (8).

In other words, the rotational force of the drive motor 5 does not directly rotate the door 1 through the above-described drive shaft, but is located at the lower end of the door 1 by transmitting the rotational force to the beam structure 8. Since the rotational force of the driving motor 5 is transmitted to the door 1 through the beam structure 8, the rotational load is hardly applied.

This is similar to the principle of the lever by the beam structure (cantilever shape), which results in less force when rotating the door (1). It is to act to allow the rotation of the rotation of sufficient force.

In addition, the drive shaft 5 is driven by a friction clutch type instead of an integral type in which the drive shaft is directly driven, thereby preventing the drive motor 5 from being reversed by external force during the operation of the drive motor 5, and preventing excessive load from being applied. It is possible to prevent the injuries of the occupants by preventing the collision of the occupants due to the reaction caused by the adverse action of the inadvertent drive motor 5 by the occupants in the interior.

As described above, the present invention, in opening and closing the door automatically, by preventing the reverse operation of the drive motor by the external force, and by allowing the rotation sensor to detect the amount of rotation of the door, the use reliability of the door In addition, it improves convenience, and is installed around the rotation axis of the swing door, and can be easily installed on the existing swing door, and is easy to install, and the appearance is simplified and simplified through the configuration of a simple driving device without external exposed structure. It has a very good effect such as making a door.

Claims (3)

The upper one side of the door 1 consists of a passive hinge part 3 supporting the door 1 to the door frame 2, and on the other lower side of the door 1 to open and close the door 1 in a sliding manner. In the drive device for automatic swing door having a drive mechanism for turning the door embedded on one side, The door drive mechanism, A drive motor 5 for providing rotational force to the door 1 at a position concealed from the door frame 2; A worm gear 20 which receives the rotational force from the drive motor 5; A transmission member 30 engaged with the drive shaft of the worm gear 20 and arranged coaxially with the drive shaft of the worm gear 20 so as to rotate in association with the rotation of the worm gear 20; And a friction member 50 coaxially coupled with the transmission member 30 so that the clutch is coupled by the friction force elastically pressurized and frictionally coupled through the transmission member 30 and the spring 40, The friction member 50 is connected to the door (1), the beam structure (8) disposed inside the frame (7) of the door (1) for coupling to the door 1 and transmitting the rotational force generated about the axis 1 to the door (1) Automatic swing door driving device characterized in that the shaft is coupled to one end. The method of claim 1, The friction clutch coupling is made of abutment of the mutually facing surfaces of the inner step 50a of the lower end of the friction member 50 and the flange portion 30a of the upper end of the transmission member 30. Driving device for automatic swing door, characterized in that made by pressing by a compression spring (40) built in the member (50). The method of claim 1, The inner hollow portion of the drive shaft formed by the transmission member 30, the friction member 50, and the worm wheel 20b is a beam interlocked with the rotation of the door 1 separately from the drive shaft that is frictionally contacted by a predetermined value sliding. A drive device for an automatic swing door, characterized in that the sensor shaft 70 is axially coupled to one end of the rotation sensor 80 for sensing the rotation amount of the structure (8).