KR102674003B1 - opening and closing apparatus of folding automatic door - Google Patents

Abstract

The present invention includes a pillar member installed in a standing state on the ground to be installed, a first door on one side rotatably coupled to the pillar member and rotating between an open position and a closed position, and a second door on the other side of the first door. It relates to an opening and closing device for opening and closing a folding automatic door including a second door installed to be relatively rotatable, wherein a drive motor and one end are fixedly coupled to a drive shaft of the drive motor, and the other end is positioned at the open position of the first door. A crank member rotating between two positions corresponding to a closed position and a link member whose one end is rotatably coupled to the other end of the crank member and the other end is rotatably coupled to one side of the first door, , the link member is characterized in that a pair of fastening pieces spaced apart in the vertical direction are formed at both ends and protrude in the outward direction, and depressions that are recessed in the vertical direction are formed on the inner upper and lower surfaces of both ends.
According to the present invention as described above, a greater rotational force can be transmitted to the door by minimizing the loss of rotational force transmitted from the drive motor, and durability is improved by minimizing the load of rotational force generated in a specific area, thereby reducing the risk of maintenance. Costs can be significantly reduced.
In addition, the present invention is installed at a certain height from the ground to prevent water ingress and foreign matter from easily occurring, so it is possible to prevent the switchgear from being damaged or destroyed by water ingress and foreign matter infiltration.
In addition, the present invention enables more rapid opening and closing of the door by using a helical gear structure reducer with a high maximum torque tolerance due to an increase in the reduction ratio.

Description

{opening and closing apparatus of folding automatic door}

The present invention relates to an opening and closing device for a folding automatic door. More specifically, the power transmission structure has been improved to minimize the loss of rotational force transmitted from the drive motor and at the same time prevent the occurrence of rotational force load and excessive shear and torsional stress in specific areas. It relates to an opening and closing device for a folding automatic door that can minimize damage, is installed at a certain height from the ground to prevent flooding and foreign matter infiltration, and has a high maximum torque tolerance due to an increase in reduction ratio.

The types of doors used in the entrances of various buildings are classified into various types depending on their shape and method.

A door that opens and closes by rotating around a vertical frame on one side or hardware such as a hinge attached thereto is called a hinged door, and a door that opens and closes by moving horizontally on a groove or rail is called a sliding door ( It is called a sliding door.

A folding door refers to a sliding door that includes two articulated doors that rotate and fold in opposite directions when opened, and is often used in entrances with a relatively large width.

Meanwhile, folding automatic doors equipped with an additional opening and closing device to automatically open and close the door are usually installed at entrances to buildings where there are many vehicles and where security is required.

Figure 1A (Figure 2) is a perspective view of a conventional folding automatic door, Figure 1B (Figure 8) is a perspective view of an opening and closing device for opening and closing a conventional folding automatic door, and Figure 1C is a plan view of a conventional folding automatic door in a closed state. .

As shown in FIG. 1A, a conventional folding door includes a base member 100' installed on the ground, pillar members 200' spaced apart on both sides of the base member 100', and a main hinge 301'. A first door 300' rotatably coupled to the pillar member 200' and a second door 400 rotatably coupled to the first door 400' by an auxiliary hinge 401'. ') and an opening and closing device 10' installed inside the pillar member 200' and automatically opening and closing the first door 300' and the second door 400'.

Here, as shown in FIG. 1B, the opening and closing device 10' includes a housing 11' installed on the upper surface of the base member 100' and having a space formed therein, and a drive shaft installed on the upper part of the housing 11'. (12a') is a drive motor (12') disposed in the space, a reducer (13') interposed between the housing (11') and the drive motor (12'), and one end is coupled to the drive shaft (12a') A crank member 14' that rotates between two positions corresponding to the open and closed positions of the first door 300' and the second door 400' by rotation of the drive motor 12', and both ends The bearing members 15a' and 15b' screwed together include a rod member 15' rotatably coupled to the other end of the crank member 14' and one side of the first door 300'. .

As shown in FIG. 1C, the conventional opening and closing device 10' as described above is designed to operate in the longitudinal direction of the rod member 15' disposed perpendicular to the first door 300' when the first door 300' is closed. The central axis C1 of the drive shaft 12a', where the central axis C5 and one end of the crank member 14' are coupled, is placed close to a preset distance or less, and the load is loaded through the first door 300'. Even if an external force acts in the direction of the longitudinal central axis C6 of the member 15', a minimum moment is generated in the crank member 14' by the external force acting, so that the crank member 14' is easily affected by the external force. It is designed to prevent the drive motor (12') and reducer (13') connected to the crank member (14') from being damaged by external force applied to the first door (300') in a closed state by preventing it from rotating. will be.

However, as shown in Figure 1b, the conventional opening and closing device 10' described above has a rod member 15' that transmits power between the crank member 14' and the first door 300' screwed at both ends. It is structured to be connected to the crank member 14' and the first door 300' through bearing members 15a and 15b, so that when used for a long time, the bearings are screwed to both ends of the rod member 15'. As the coupling state of the members 15a and 15b becomes loose, a problem occurs in which the function of transmitting power between the crank member 14' and the first door 300' cannot be properly performed, so they must be replaced periodically. There is a problem that maintenance costs increase.

In addition, as shown in FIG. 1B, the conventional opening and closing device 10' has a housing ( 11') is installed on the base member 100' and placed close to the ground, so not only may flooding occur in the event of a flood, but also sediment or fallen leaves generated on the ground or base member 100' may cause damage. Foreign substances can easily penetrate and cause damage to the switch 10'.

In addition, the reducer 13' used in the above-described conventional opening and closing device 10' has a limit to the maximum torque allowed as the reduction ratio increases, making it difficult to quickly open and close the folding automatic door.

Korean Patent No. 10-2180015 (Opening and closing device and folding automatic door including same, 2020.11.11)

The present invention was created to solve the above problems, and the purpose of the present invention is to improve the power transmission structure to minimize the loss of rotational force transmitted from the drive motor, while also reducing rotational force load and excessive shear and torsional stress in specific areas. The purpose of this invention is to provide an opening and closing device for a folding automatic door that can minimize this occurrence, is installed at a certain height from the ground to prevent flooding and penetration of foreign substances, and has a high maximum torque tolerance due to an increase in reduction ratio.

According to the present invention for achieving the above object, a pillar member is installed in a standing state on the ground to be installed, a first door whose one side is rotatably coupled to the pillar member and rotates between an open position and a closed position; In the opening and closing device for opening and closing a folding automatic door including a second door that is installed to be relatively rotatable on the other side of the first door, the opening and closing device includes a drive motor and one end fixedly coupled to the drive shaft of the drive motor, A crank member, the other end of which rotates between two positions corresponding to the open and closed positions of the first door, and one end of which is rotatably coupled to the other end of the crank member, and the other end of which is rotatably coupled to one side of the first door. It includes a link member rotatably coupled to the link member, wherein a pair of fastening pieces spaced apart in the vertical direction are formed at both ends to protrude outward, and depressions recessed in the vertical direction are formed on the inner upper and lower surfaces of both ends. An opening and closing device for a folding automatic door is provided.

Here, the crank member may be formed to become narrower in width toward the other end.

Additionally, the opening and closing device may be accommodated inside the pillar member and may be installed at a certain height and spaced apart from the installation ground.

In addition, it further includes a reducer coupled to the drive shaft of the drive motor, wherein the reducer is a bevel reducer having a helical gear structure.

In addition, the link member further includes a reinforcing plate that protrudes along the width direction on one side where the depression is formed and is installed at regular intervals along the longitudinal direction,

In each area partitioned by the reinforcement plate, reinforcement slits formed along the longitudinal direction are formed at regular intervals along the width direction to form a multi-stage slit structure.

According to the present invention as described above, the power transmission structure is improved, and the loss of rotational force transmitted from the drive motor can be minimized to transmit a greater rotational force to the door, and the occurrence of rotational force load and excessive shear and torsional stress in specific areas is prevented. As durability is improved by minimizing the maintenance costs, maintenance costs can be significantly reduced. The occurrence of rotational force load and excessive shear and torsional stress in specific areas can be minimized.

In addition, the present invention is installed at a certain height from the ground to prevent water ingress and foreign matter from easily occurring, so it is possible to prevent the switchgear from being damaged or destroyed by water ingress and foreign matter infiltration.

In addition, the present invention enables more rapid opening and closing of the door by using a helical gear structure reducer with a high maximum torque tolerance due to an increase in the reduction ratio.

1A is a perspective view of a conventional folding automatic door,
Figure 1b is a perspective view of an opening and closing device for opening and closing a conventional folding automatic door;
Figure 1c is a plan view of a conventional folding automatic door in a closed state;
Figure 2 is a perspective view of a folding automatic door installed with an opening and closing device according to an embodiment of the present invention in a closed state;
Figure 3 is a perspective view in a closed state of a folding automatic door equipped with an opening and closing device according to an embodiment of the present invention;
Figure 4 shows an opening and closing device according to an embodiment of the present invention, an enlarged perspective view of area A of Figure 3;
Figures 5 (a) and (b) show the crank member and link member of the opening and closing device according to an embodiment of the present invention;
6A and 6B are diagrams for explaining the operation of the opening and closing device according to an embodiment of the present invention;
Figures 7a and 7b are schematic perspective views of a link member according to another embodiment of the present Balment.

Hereinafter, the present invention will be described in more detail with reference to the drawings. It should be noted that like elements in the drawings are represented by like symbols wherever possible. Additionally, detailed descriptions of known functions and configurations that may unnecessarily obscure the gist of the invention are omitted.

Figure 2 is a perspective view of a folding automatic door with an opening and closing device installed in a closed state according to an embodiment of the present invention, and Figure 3 is a perspective view of a folding automatic door with an opening and closing device installed in a closed state according to an embodiment of the present invention. , Figure 4 shows an opening and closing device according to an embodiment of the present invention, and is an enlarged perspective view of area A of Figure 3, and Figures 5 (a) and (b) are an opening and closing device according to an embodiment of the present invention. It shows the crank member and link member of the device.

Below, for convenience of explanation, only the right side area of the mutually symmetrical folding automatic door is shown in the drawing.

2 and 3, the folding automatic door 1000 on which the opening and closing device 10 according to an embodiment of the present invention is installed includes a base member 100, a pillar member 200, and a first door 300. , including a second door 400.

The base member 100 is formed in a substantially rectangular block shape and is installed on the ground to provide an installation area for the pillar member 200, the first door 300, and the second door 400.

This base member 100 has a guide groove 101 formed along the longitudinal direction on one side of the upper surface. This guide groove 101 accommodates the roller 401 installed in the lower part of the other side of the second door 400 and opens and closes the other side of the second door 400 by rotating in the opposite direction of the first door 300. It serves to guide the lower part in a straight line along the longitudinal direction of the base member 100.

The pillar member 200 provides an area where one side of the first door 300 is rotatably installed and also provides an area where the opening and closing device 10 is installed, and is formed in the shape of a rectangular pillar with an empty interior. , a pair is installed in an upright position on both sides of the base member 100 in the longitudinal direction.

In addition, an upper support plate 201 is installed at the top of the pillar member 200 to rotatably support the upper part of one side of the first door 300, and the upper surface of the base member 100 and the pillar member 200 are connected to each other. A lower support plate 202 is installed between the lower ends to rotatably support the lower part of one end of the first door 300.

The first door 300 has an upper part of one end rotatably installed on the upper support plate 201 through the main hinge 301, and a lower end of one side rotatably installed on the lower support plate 202 through the main hinge 301. It is installed.

One end of the second door 400 is rotatably coupled to the other end of the first door 300 through an auxiliary hinge 402, and is accommodated in the guide groove 101 of the base member 100 at the bottom of the other end. A roller 401 is installed.

When the second door 400 rotates in the direction in which the first door 300 is opened, the second door 400 rotates in the opposite direction of the first door 300 and is folded against the first door 300, thereby opening the entrance and opening the first door 300. When 300 rotates in the closing direction, it rotates in the opposite direction of the first door 300 and is placed parallel to the first door 300, thereby closing the entrance.

Meanwhile, the opening and closing device 10 according to an embodiment of the present invention is installed in the empty space inside the pillar member 200 to provide power to open and close the first door 300 and the second door 400. , As shown in FIG. 4, it includes a housing 11, a drive motor 12, a reducer 13, a crank member 14, and a link member 15.

The housing 11 provides an area where the drive motor 12, the reducer 13, the crank member 14, and the link member 15 are installed, and the power of the drive motor 12 is transferred to the first door 300. It is formed in a box shape with one side open to prevent interference with the rotational movement of the transmitting crank member 14 and link member 15.

This housing 11 is installed inside the pillar member 100 spaced apart from the lower support plate 202 installed on the upper surface of the base member by a certain height d and is installed at a certain height from the ground to be installed, so that when a flood occurs, the opening and closing device ( Not only does the problem of 10) being submerged does not occur, but there is no problem of damage to the switchgear (10) due to foreign substances such as sediment or fallen leaves generated on the installation ground or base member penetrating into the switchgear (10). .

The drive motor 12 provides power to open and close the first door 300 and the second door 400, and is installed on the upper part of the housing 11, and the drive shaft 12a is located inside the housing 11. It is installed to be placed in .

The reducer 13 is intended to increase the rotational torque of the drive shaft by reducing the rotation speed of the drive shaft, and is installed between the drive motor 12 and the housing 11 and placed on the upper surface of the housing 11.

In the present invention, a helical bevel reducer with a helical gear structure is used as the reducer 13. This helical bevel reducer has a high maximum torque allowance as the reduction ratio increases, enabling more rapid opening and closing of the first door 300 and the second door 400.

The crank member 14 transmits the rotational force of the drive motor 12 to the first door 300. As shown in FIG. 4, one end is fixedly coupled to the drive shaft 12a of the drive motor 12, and the other end is fixed to the drive shaft 12a of the drive motor 12. The end rotates between two positions corresponding to the open and closed positions of the first door 300.

As shown in (a) of FIG. 5, the crank member 14 is formed so that its width becomes narrower toward the other end, so that the rotational force of the drive motor 12 can be stably transmitted through one end having a large area. , the rotational force of the driving motor 12 can be concentrated and transmitted to the other end, where the width narrows in the direction of the other end and the area decreases, so the loss of the rotational force transmitted from the driving motor 12 can be minimized, so the link member 14 It is possible to transmit greater rotational force.

The link member 15 transmits the rotational force received from the crank member 14 to the first door 300. One end is rotatably coupled to the other end of the crank member 14, and the other end is connected to the first door 300. It is rotatably coupled to the horizontal support plate 302 formed on one side of (300).

As shown in (b) of FIG. 5, the link member 15 has a pair of fastening pieces 15a spaced apart from each other in the vertical direction at both ends, so that a pair of fastening pieces 15a are formed at one end. The rotational force transmitted from the crank member 14 can be distributed and transmitted through (15a), and the rotational force transmitted through the pair of fastening pieces 15a formed at the other end can be distributed and transmitted.

Through the above structure, the link member 15 can minimize the load of the rotational force acting on both ends, so the problem of being easily damaged or broken by the rotational force acting on both ends does not occur, and durability is significantly improved.

In addition, the link member 15 has recessed portions 15b formed in the upper and lower directions on the inner upper and lower surfaces of both ends, so that the inner thickness of both ends is smaller than the thickness of both ends.

Accordingly, the link member 15 can concentrate the rotational force distributed and transmitted through the pair of fastening pieces 15a formed at one end through the inside of both ends and transmit it to the pair of fastening pieces 15a formed at the other end. Therefore, loss of transmitted rotational force can be minimized, and thus a greater rotational force can be transmitted to the first door 300.

As described above, the present invention improves the crank member and link member, which are power transmission structures that transmit the rotational force of the drive motor to the first door, and minimizes the loss of rotational force transmitted from the drive motor to transmit a greater rotational force to the first door. In addition to transmission, the load of rotational force acting on both ends of the link member can be minimized to prevent the link member from being damaged or broken, thereby improving durability and reducing maintenance costs.

In addition, in the present invention, the installation height of the housing where the drive motor, reducer, crank member, and link member are installed is installed at a certain height from the ground, so that the switchgear is submerged in the event of a flood or foreign substances around the switchgear penetrate into the switchgear. It can prevent the switchgear from being damaged or destroyed.

In addition, since the present invention uses a helical gear structure reducer, the maximum torque allowable due to an increase in reduction ratio is higher than that of existing reducers, enabling more rapid opening and closing of the folding automatic door through the opening and closing device.

6A and 6B are diagrams for explaining the operation of the opening and closing device according to an embodiment of the present invention.

In the opening and closing device 10 of the present invention as described above, as shown in FIG. 6A, when the drive shaft 12a of the drive motor is rotated counterclockwise with the first door 300 closed, the crank member 14 As the other end rotates counterclockwise and the position changes as shown in FIG. 6b, the link member 15 connected thereto rotates the first door 300 in the direction of the opening and closing device 10, thereby opening the first door 300. ) The second door 400, which rotates in the opposite direction, is folded against the first door 300, thereby opening the door.

And, as shown in FIG. 6B, in the opening and closing device 10 of the present invention, when the drive shaft 12a of the drive motor is rotated clockwise while the first door 300 is open, the other end of the crank member 14 is rotated clockwise. As the position is changed by rotating clockwise, as shown in FIG. 6A, the link member 15 connected thereto rotates the first door 300 in the opposite direction to the opening and closing device, thereby rotating in the opposite direction to the first door 300. As the second door is placed parallel to the first door 300, the door is closed.

Figures 7a and 7b are schematic perspective views of a link member according to another embodiment of the present Balment.

As described above, the link member 15 according to an embodiment of the present invention is formed with depressions in the upper and lower directions on the inner upper and lower surfaces of both ends, so that the thickness of the inside of both ends is smaller than the thickness of both ends, so when used for a long time, The inside of both ends of the link member 15 may be damaged by shear or torsional stress, resulting in loss of its function.

For this reason, the opening and closing device according to another embodiment of the present invention solved this problem by improving the structure of the link member 15. Since the remaining configuration other than the link member 15 is the same as that of one embodiment of the present invention, a detailed description thereof is provided. Omit it.

As shown in FIGS. 7A and 7B, the link member 15 according to another embodiment of the present invention has a plurality of protrusions formed along the width direction of the link member 15 on one side of the link member 15 where the depression is formed. Reinforcement plates 15c are installed at regular intervals along the longitudinal direction of the link member 15, and reinforcement slits 15d are formed along the longitudinal direction of the link member 15 in each area partitioned by the reinforcement plates 15c. ) has a multi-stage slit structure formed at regular intervals along the width direction of the link member 15.

Here, the reinforcement plate 15c increases the section modulus of the inner regions of both ends of the link member 15 with a small thickness, thereby effectively resisting shear and torsional stress acting on the inner regions of both ends of the link member 15.

In addition, the slits 15d formed in each inner region of both ends of the link member 15 partitioned by the reinforcing plate 15c absorb and offset the shear and torsional stress acting on the inner regions of both ends of the link member 15. Accordingly, it is possible to more effectively resist shear and torsional stress acting on the inner regions of both ends of the link member 15.

As described above, the opening and closing device according to another embodiment of the present invention is connected to the inner area of both ends of the link member 15 through the reinforcement plate 15c and the multi-stage slit 15d structure formed on the inner area of both ends of the link member 15. By reducing the shear and torsional stress, durability is significantly improved because the link member 15 is not easily broken or damaged by shear and torsional stress acting on the inner regions of both ends even if used for a long time.

Although the present invention has been described in relation to the above preferred embodiments, various modifications and variations can be made without departing from the gist and scope of the invention. Accordingly, the appended patent claims are intended to cover such modifications or variations as fall within the subject matter of the present invention.

1000: folding automatic door 100: base member
101: Guide home 200: Guide home
201: upper support plate 202: lower support plate
300: first door 301: main hinge
302: horizontal support plate 400: second door
401: Roller 402: Auxiliary hinge
10: Switchgear 11: Housing
12: drive motor 12a: drive shaft
13: Reducer 14: Crank member
15: Link member 15a: Fastening piece
15b: depression 15c: reinforcement plate
15d: slit

Claims (5)

A pillar member installed in a standing state on the ground to be installed, a first door rotatably coupled to the pillar member on one side and rotating between an open position and a closed position, and a relative rotatable part on the other side of the first door. In the opening and closing device for opening and closing a folding automatic door including a second door installed,
The opening and closing device is
a drive motor;
a crank member whose one end is fixedly coupled to the drive shaft of the drive motor and whose other end rotates between two positions corresponding to an open position and a closed position of the first door;
A link member whose one end is rotatably coupled to the other end of the crank member and whose other end is rotatably coupled to one side of the first door,
The link member has a pair of fastening pieces spaced apart in the vertical direction at both ends that protrude outward, and depressions that are recessed in the vertical direction on the inner upper and lower surfaces of both ends.
The link member further includes a reinforcing plate that protrudes along the width direction on one side where the depression is formed and is installed at regular intervals along the longitudinal direction,
An opening and closing device for a folding automatic door, characterized in that in each area partitioned by the reinforcement plate, reinforcement slits formed along the longitudinal direction are formed at regular intervals along the width direction to form a multi-stage slit structure.
According to paragraph 1,
An opening and closing device for a folding automatic door, wherein the crank member is formed to become narrower in width toward the other end.
According to claim 1,
The opening and closing device is an opening and closing device for a folding automatic door, characterized in that the opening and closing device is accommodated inside the pillar member and is installed at a certain height and spaced apart from the installation ground.
According to claim 1,
It further includes a reducer coupled to the drive shaft of the drive motor,
An opening and closing device for a folding automatic door, characterized in that the reducer is a bevel reducer with a helical gear structure.









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