WO2024090621A1

WO2024090621A1 - Automatic door opening/closing apparatus

Info

Publication number: WO2024090621A1
Application number: PCT/KR2022/016650
Authority: WO
Inventors: 김용준
Original assignee: 엘지전자 주식회사
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2024-05-02

Abstract

Disclosed is an automatic door opening/closing apparatus. The automatic door opening/closing apparatus automatically opens a closed door or automatically closes an open door. The automatic door opening/closing apparatus according to an embodiment of the present invention comprises a housing, an inner support portion, a piston assembly, an inner support driving portion, and a piston driving portion. Also, an automatic door opening/closing apparatus according to another embodiment of the present invention comprises a housing, an inner movement portion, a damper assembly, a damper driving portion, and a body driving portion.

Description

automatic door opening and closing device

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

Generally, a door (for example, an entrance door to a house) is equipped with a door closer that closes the door.

The user unlocks the closed door using a door key or door card, and opens the door by pulling or pushing the door handle. At this time, a conventional door closer connected to the door can close the door even if the user releases the door handle.

The door closer has a hydraulic control valve, and the closing speed of the door can be adjusted by adjusting the hydraulic control valve.

When a user enters and exits through a door and the door lock is unlocked, the door needs to be moved to open or close.

That is, when the door lock is unlocked, the door needs to be automatically opened to allow the user to enter or exit, or automatically closed to allow the lock to be locked. In this case, for example, the user is holding an object in both hands, or the door needs to open and close on its own when the user unlocks the lock inside the house.

However, although conventional door closers can close open doors, they have a problem in that they cannot automatically open closed doors. In other words, even if the user unlocks the door, there is a problem in that the door moves to open and does not close again.

Therefore, for user convenience, a door opening and closing device that moves the door to open or close is needed.

The purpose of the present invention is to provide an automatic door opening and closing device that automatically opens or closes the door.

The object of the present invention described above is achieved through specific details described later.

An automatic door opening and closing device according to an example of an embodiment of the present invention includes a housing, an internal support unit, a piston assembly, an internal support drive unit, and a piston drive unit. The housing is connected to the door and contains fluid therein. The internal support portion is disposed inside the housing and is movable. The piston assembly is disposed inside the housing, is connected to an internal support, and is movable. The internal support drive unit is connected to the internal support unit and moves the internal support unit. The piston driving unit is connected to the fixture and the piston assembly and moves the piston assembly.

Specifically, the housing includes first to fourth side walls. The second side wall faces the first side wall. The third side wall connects one side of the first side wall and the second side wall. The fourth side wall connects the other side of the first side wall and the second side wall and faces the third side wall. Additionally, the housing is provided with a first relief pipe, a second relief pipe, a first hydraulic pipe, and a second hydraulic pipe. The first relief tube is connected to the first side wall and disposed adjacent to the third side wall. The second relief tube is connected to the first side wall and disposed adjacent to the fourth side wall. The first hydraulic tube is connected to the second side wall and is disposed adjacent to the third side wall. The second hydraulic tube is connected to the second side wall and is disposed adjacent to the fourth side wall. The first relief pipe, the second relief pipe, the first hydraulic pipe, and the second hydraulic pipe communicate with the interior of the housing. And, a hydraulic valve that regulates the hydraulic pressure of the hydraulic pipe is disposed in each of the first hydraulic pipe and the second hydraulic pipe.

Specifically, the internal support unit includes a first internal support unit, a second internal support unit, and a connection support unit. The first internal support unit is connected to the internal support driving unit. The second inner support portion faces the first inner support portion and is connected to the piston assembly. The connection support portion connects the first inner support portion and the second inner support portion. And, the connection support part includes a first hole and a second hole. The first hole is formed through a position adjacent to the first internal support part. The second hole is formed through a position adjacent to the second internal support part.

Specifically, the piston assembly includes a first piston, a second piston, an upper connection part, a lower connection part, and an elastic member. The second piston is arranged to be spaced apart from the first piston at a preset distance. The upper connection part connects one side of the first piston and one side of the second piston. The lower connection part connects the other side of the first piston and the other side of the second piston. The elastic member is disposed between the second piston and the inner support and is connected to the second piston and the inner support. Additionally, the first piston includes a first check valve disposed to penetrate the first piston in the thickness direction of the first piston. And, the second piston includes a second check valve disposed through the second piston in the thickness direction of the second piston.

Specifically, the lower connection portion includes gear teeth. The gear teeth are engaged with the rotating gear of the piston drive unit.

Specifically, the internal space of the housing is divided into a first chamber, an intermediate chamber, and a second chamber. The first chamber is a space between the third side wall and the first piston. The intermediate chamber is the space between the first piston and the second piston. The second chamber is a space between the second piston and the fourth side wall.

Specifically, the elastic member is disposed between the second piston and the second internal support and is connected to the second piston and the second internal support.

Specifically, the internal support drive unit includes a motor, a linear gear, and a connecting gear. The motor is fixed to the housing or door. The linear gear is connected to the rotation axis of the motor. The connecting gear connects the linear gear and the internal support and moves by driving a motor.

Specifically, the piston driving unit includes a rotating gear and a connecting link. The rotating gear is disposed inside the housing and meshes with gear teeth formed on the piston assembly. One end of the connection link is connected to the rotating gear, and the other end is connected to the fixed body.

The automatic door opening and closing device according to an example of an embodiment of the present invention further includes a control unit. The control unit controls the internal support driving unit. In other words, the control unit controls the internal support drive unit to operate when a door open signal or a door close signal is input.

An automatic door opening and closing device according to another embodiment of the present invention includes a housing, an internal moving part, a damper assembly, a damper driving part, and a body driving part. The housing is connected to the door. The internal moving part is disposed inside the housing and is movable. The damper assembly is connected to the internal moving part and adjusts the speed of the internal moving part. The damper driving unit is connected to the damper assembly. The body driving part is connected to the fixed body and the internal moving part, and moves the internal moving part.

Specifically, the housing includes a first side wall, a second side wall, a third side wall, and a fourth side wall. The second side wall faces the first side wall. The third side wall connects one side of the first side wall and the second side wall. The fourth side wall connects the other side of the first side wall and the second side wall and faces the third side wall. Additionally, the housing includes a first slot, a second slot, a third slot, and a linear guide. The first slot is formed in the first side wall and disposed adjacent to the third side wall. The second slot is formed in the first side wall and disposed adjacent to the fourth side wall. The third slot is formed in the second side wall and is disposed at a position facing the second slot. One end and the other end of the linear guide are respectively connected to the inner surface of the third side wall and the inner surface of the fourth side wall. The internal moving part moves along the linear guide.

Specifically, the internal moving part includes a body, damper contact teeth, gear teeth, and an elastic member. The body can move along a linear guide disposed in the inner space of the housing. The damper contact teeth are formed to a preset length on one side of the body. The gear teeth are formed to a preset length on one side of the body. The elastic member is disposed between the body and the damper assembly.

Specifically, the damper assembly includes a pair of rotary dampers, a joint link, an intermediate link, and a support link. The pair of rotary dampers are disposed on the outside of the housing and engage with the internal moving part. The joint link is connected to a pair of rotary dampers and can rotate. The intermediate link is connected to the next link. The support link is disposed to penetrate the interior of the housing and is connected to the intermediate link.

Specifically, the pair of rotary dampers includes a first rotary damper and a second rotary damper. The first rotary damper is a clockwise rotary damper, and the second rotary damper is a counterclockwise rotary damper.

Specifically, the damper contact teeth engage a pair of rotary dampers. Additionally, the elastic member is disposed between the body and the support link and is connected to the body and the support link.

Specifically, the damper driving unit includes a motor, a linear gear, and a connecting gear. The motor is fixed to the housing or door. The linear gear is connected to the rotation axis of the motor. The connecting gear connects the linear gear and the damper assembly and moves by driving a motor.

Specifically, the body drive unit includes a rotating gear and a connecting link. The rotating gear is disposed inside the housing and engages gear teeth formed on the internal moving part. One end of the connecting link is connected to the rotating gear and the other end is connected to the fixed body.

The automatic door opening and closing device according to another embodiment of the present invention further includes a control unit. The control unit controls the damper driving unit. In other words, the control unit controls the damper driving unit to operate when a door open signal or a door close signal is input.

The automatic door opening and closing device according to examples of embodiments of the present invention has the effect of automatically opening a closed door or automatically closing an open door.

Figure 1 shows an automatic door opening and closing device according to an example according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view schematically showing the housing 10 of FIG. 1.

Figure 3 is a cross-sectional view schematically showing the inner support part of Figure 1.

Figure 4 is a cross-sectional view schematically showing the piston assembly of Figure 1.

Figure 5 is a cross-sectional view schematically showing the automatic door opening and closing device of the present invention in a closed state.

Figure 6 shows a state in which the internal support drive unit operates in a state in which the door is closed and the internal support unit moves in one direction.

Figure 7 shows a state in which the piston assembly moves and the door is opened.

Figure 8 shows a state in which the inner support drive unit operates while the door is open and the inner support unit moves in one direction opposite to the other.

Figure 9 shows an automatic door opening and closing device according to an example according to a second embodiment of the present invention.

FIG. 10 is a cross-sectional view schematically showing the housing 100 of FIG. 9.

Figure 11 is a cross-sectional view schematically showing the internal moving part of Figure 9.

Figure 12 schematically shows the damper assembly of Figure 9.

Figure 13 is a cross-sectional view schematically showing the automatic door opening and closing device of the present invention in a closed state.

Figure 14 shows a state in which the damper drive unit operates with the door closed and the support link of the damper assembly moves in one direction.

Figure 15 shows a state in which the internal moving part moves and the door is opened.

Figure 16 shows a state in which the damper drive unit operates with the door open and the support link of the damper assembly moves in one direction opposite to the other.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. Among the components of the present invention, detailed descriptions of those that can be clearly understood and easily reproduced by a person skilled in the art according to the prior art will be omitted in order to not obscure the gist of the present invention.

Although a conventional door closer can close an open door, it has a problem in that it cannot automatically open a closed door.

The automatic door opening and closing device described in this specification can automatically open a closed door or automatically close an open door for user convenience.

Hereinafter, an automatic door opening and closing device according to examples of embodiments of the present invention will be described.

First, an automatic door opening and closing device according to an example of the first embodiment of the present invention will be described.

Figure 1 shows an automatic door opening and closing device according to an example according to the first embodiment of the present invention, and Figure 2 is a cross-sectional view schematically showing the housing 10 of Figure 1.

1 and 2, the automatic door opening and closing device according to an example of the embodiment of the present invention includes a housing (10), an internal support part (20), a piston assembly (30), and an internal support drive part ( 40) and a piston driving unit 50.

The housing 10 forms the exterior of the automatic door opening and closing device of the present invention.

The housing 10 includes a first side wall 11 that forms the exterior of the automatic door opening and closing device of the present invention, a second side wall 12 facing the first side wall 11, the first side wall 11 and the A third side wall 13 connecting one side of the second side wall 12, a fourth side wall connecting the first side wall 11 and the other side of the second side wall 12 and facing the third side wall 13. It includes a side wall 14, a fifth side wall (not shown), and a sixth side wall (not shown). 1 and 2, the first side wall 11 represents the upper side wall, the second side wall 12 represents the lower side wall, the third side wall 13 represents the left wall, and the fourth side wall (14) represents the right side wall, the fifth side wall represents the front side wall, and the sixth side wall represents the rear side wall.

The first side wall 11 represents a side wall (upper side wall) that forms the upper surface of the housing 10. The second side wall 12 represents a side wall (lower side wall) that forms the lower surface of the housing 10. The fifth side wall represents a side wall (front side wall) that forms the front of the housing 10, and connects one side of the first side wall 11 and one side of the second side wall 12 in the front-back direction. The sixth side wall represents a side wall (rear side wall) representing the rear side of the housing 10, and connects the other side of the first side wall 11 and the other side of the second side wall 12 in the front-back direction. The third side wall 13 represents a side wall (left side wall) forming the left side of the housing 10, and the first side wall 11, the second side wall 12, and the fifth side wall are formed in the left and right direction (horizontal direction). and one side of each of the sixth side walls. The fourth side wall 14 represents a side wall (right side wall) forming the right side of the housing 10, and in the left and right direction (horizontal direction), the first side wall 11, the second side wall 12, the fifth side wall, and The other side of each of the sixth side walls is connected. Here, the other side represents the side that is opposed to one side.

The first side wall 11, the second side wall 12, the third side wall 13, the fourth side wall 14, the fifth side wall, and the sixth side wall may be formed as a whole in a circular or oval shape, or It may include a partially circular or oval shape.

The housing 10 is formed in the shape of a hollow polygonal cylinder having a preset length in one direction. The polygonal cylinder shape may partially include a circular shape or an elliptical shape. Additionally, the one direction refers to the left and right direction (horizontal direction) in FIGS. 1 and 2, for example.

The housing 10 contains fluid therein. The fluid is accommodated in a space formed inside the housing 10 (this is referred to as 'internal space'), which will be described later.

The housing 10 has an internal space. In other words, the housing 10 has an internal space having a preset length in one direction (eg, horizontal direction).

The internal space is formed surrounded by the first side wall 11, the second side wall 12, the third side wall 13, the fourth side wall 14, the fifth side wall, and the sixth side wall of the housing 10. In the internal space, not only the fluid but also the internal support part 20 and the piston assembly 30 are disposed.

Meanwhile, the housing 10 includes a first relief pipe 15, a second relief pipe 16, a first hydraulic pipe 17, and a second hydraulic pipe 18.

The first relief pipe 15 is formed in a pipe shape with a preset length in one direction.

The first relief pipe 15 is connected to the housing 10 and communicates with the interior of the housing 10. Here, the inside of the housing 10 represents the internal space of the housing 10.

Fluid may travel through the first relief tube (15). That is, the fluid inside the housing 10 can move in one direction or in the opposite direction along the passage (flow path) formed inside the first relief pipe 15.

The first relief tube 15 is disposed on the third side wall 13 side of the housing 10. In other words, the first relief tube 15 is disposed adjacent to the third side wall 13. Here, 'position adjacent to the third side wall 13' indicates that the first relief pipe 15 is located far from the fourth side wall 14 and close to the third side wall 13.

The first relief pipe 15 includes one end 151 and the other end 152 opposite to the one end 151. The one end 151 is connected to the housing 10 at a position spaced apart from the third side wall 13 by a preset distance and communicates with the inside of the housing 10. In addition, the other end 152 is connected to the housing 10 at a position spaced apart from the one end 151 by a preset distance in the direction of the fourth side wall 14, and communicates with the inside of the housing 10.

In the drawing, the first relief pipe 15 is connected to the first side wall 11 of the housing 10, but is not necessarily limited to the first side wall 11 of the housing 10. The first relief pipe 15 may be connected to the second side wall 12, the fifth side wall, or the sixth side wall of the housing 10 and communicate with the inside of the housing 10, depending on the embodiment.

The second relief tube 16 is formed in a tube shape with a preset length in one direction.

The second relief pipe 16 is connected to the housing 10 and communicates with the interior of the housing 10. Here, the inside of the housing 10 represents the internal space of the housing 10.

Fluid may travel through the second relief tube (16). That is, the fluid inside the housing 10 can move in one direction or in the opposite direction along the passage (flow path) formed inside the second relief pipe 16.

The second relief tube 16 is disposed on the fourth side wall 14 side of the housing 10. In other words, the second relief tube 16 is disposed adjacent to the fourth side wall 14. Here, 'position adjacent to the fourth side wall 14' indicates that the second relief pipe 16 is located far from the third side wall 13 and close to the fourth side wall 14.

The second relief pipe 16 includes one end 161 and an other end 162 opposite to the one end 161. The one end 161 is connected to the housing 10 at a position spaced apart from the other end 152 of the first relief pipe 15 by a preset distance, and communicates with the inside of the housing 10. In addition, the other end 162 is connected to the housing 10 at a position spaced apart from the one end 161 by a preset distance in the direction of the fourth side wall 14, and communicates with the inside of the housing 10. In addition, the other end 162 is connected to the housing 10 at a position spaced apart from the fourth side wall 14 by a preset distance in the direction of the third side wall 13.

In the drawing, the second relief pipe 16 is connected to the first side wall 11 of the housing 10, but is not necessarily limited to the first side wall 11 of the housing 10. The second relief pipe 16 may be connected to the second side wall 12, the fifth side wall, or the sixth side wall of the housing 10, depending on the embodiment, and communicate with the interior of the housing 10.

The first hydraulic pipe 17 is formed in a tube shape with a preset length in one direction.

The first hydraulic pipe 17 is connected to the housing 10 and communicates with the interior of the housing 10. Here, the inside of the housing 10 represents the internal space of the housing 10.

Fluid may move through the first hydraulic tube (17). That is, the fluid inside the housing 10 can move in one direction or in the opposite direction along the passage (flow path) formed inside the first hydraulic pipe 17.

The first hydraulic pipe 17 is disposed on the third side wall 13 side of the housing 10. In other words, the first hydraulic pipe 17 is disposed adjacent to the third side wall 13. Here, 'position adjacent to the third side wall 13' indicates that the first hydraulic pipe 17 is located far from the fourth side wall 14 and close to the third side wall 13.

The first hydraulic pipe 17 includes one end 171 and the other end 172 opposite to the one end 171. The one end 171 is connected to the housing 10 at a position spaced apart from the third side wall 13 by a preset distance and communicates with the inside of the housing 10. In addition, the other end 172 is connected to the housing 10 at a position spaced apart from the one end 171 by a preset distance in the direction of the fourth side wall 14, and communicates with the inside of the housing 10.

In the drawing, the first hydraulic pipe 17 is connected to the second side wall 12 of the housing 10, but is not necessarily limited to the second side wall 12 of the housing 10. The first hydraulic pipe 17 may be connected to the first side wall 11, the fifth side wall, or the sixth side wall of the housing 10 and communicate with the inside of the housing 10, depending on the example of the embodiment.

The housing 10 of the present invention further includes a first hydraulic valve 17v disposed in the first hydraulic pipe 17.

The first hydraulic valve 17v is disposed (mounted) on one end 171 or the other end 172 of the first hydraulic pipe 17. Accordingly, a through hole into which the first hydraulic valve 17v can be mounted is formed in the first hydraulic pipe 17.

The first hydraulic valve 17v is a hydraulic control valve. Specifically, the first hydraulic valve 17v controls the speed of fluid moving inside the first hydraulic pipe 17.

The first hydraulic valve 17v may be screw, for example. Specifically, a male thread may be formed in the first hydraulic valve 17v, and a female thread may be formed in a through hole of the first hydraulic pipe 17 on which the first hydraulic valve 17v is mounted. When the first hydraulic valve 17v rotates clockwise (or counterclockwise) and moves inside the through hole, the flow path (passage through which the fluid moves) of the first hydraulic pipe 17 narrows, and the fluid flows into the first It moves slowly through the hydraulic pipe (17). Accordingly, the door connected to the housing 10 opens or closes slowly. On the contrary, when the first hydraulic valve 17v rotates counterclockwise (or clockwise) and moves to the outside of the through hole, the flow path of the first hydraulic pipe 17 widens, and the fluid flows into the first hydraulic pipe 17 ) to move quickly. Accordingly, the door connected to the housing 10 is quickly opened or closed.

The second hydraulic pipe 18 is formed in the shape of a pipe having a preset length in one direction.

The second hydraulic pipe 18 is connected to the housing 10 and communicates with the interior of the housing 10. Here, the inside of the housing 10 represents the internal space of the housing 10.

Fluid may move through the second hydraulic tube (18). That is, the fluid inside the housing 10 may move in one direction or in the opposite direction along the passage (flow path) formed inside the second hydraulic pipe 18.

The second hydraulic pipe 18 is disposed on the fourth side wall 14 side of the housing 10. In other words, the second hydraulic pipe 18 is disposed adjacent to the fourth side wall 14. Here, the 'position adjacent to the fourth side wall 14' indicates that the second hydraulic pipe 18 is located far from the third side wall 13 and close to the fourth side wall 14.

The second hydraulic pipe 18 includes one end 181 and the other end 182 opposite to the one end 181. The one end 181 is connected to the housing 10 at a position spaced apart from the other end 172 of the first hydraulic pipe 17 by a preset distance and communicates with the inside of the housing 10. In addition, the other end 182 is connected to the housing 10 at a position spaced apart from the one end 181 by a preset distance in the direction of the fourth side wall 14, and communicates with the inside of the housing 10. In addition, the other end 182 is connected to the housing 10 at a position spaced apart from the fourth side wall 14 by a preset distance in the direction of the third side wall 13.

In the drawing, the second hydraulic pipe 18 is connected to the second side wall 12 of the housing 10, but is not necessarily limited to the second side wall 12 of the housing 10. The second hydraulic pipe 18 may be connected to the first side wall 11, the fifth side wall, or the sixth side wall of the housing 10 and communicate with the inside of the housing 10, depending on the example of the embodiment.

The housing 10 of the present invention further includes a second hydraulic valve 18v disposed in the second hydraulic pipe 18.

The second hydraulic valve 18v is disposed (mounted) on one end 181 or the other end 182 of the second hydraulic pipe 18. Accordingly, a through hole into which the second hydraulic valve 18v can be mounted is formed in the second hydraulic pipe 18.

The second hydraulic valve 18v is a hydraulic control valve. Specifically, the second hydraulic valve 18v controls the speed of fluid moving inside the second hydraulic pipe 18.

The second hydraulic valve 18v may be screw, for example. Specifically, a male thread may be formed in the second hydraulic valve 18v, and a female thread may be formed in a through hole of the second hydraulic pipe 18 on which the second hydraulic valve 18v is mounted. When the second hydraulic valve 18v rotates clockwise (or counterclockwise) and moves inside the through hole, the flow path (passage through which fluid moves) of the second hydraulic pipe 18 narrows, and the fluid flows into the second hydraulic valve 18. It moves slowly through the hydraulic pipe (18). Accordingly, the door connected to the housing 10 opens or closes slowly. On the contrary, when the second hydraulic valve 18v rotates counterclockwise (or clockwise) and moves to the outside of the through hole, the flow path of the second hydraulic pipe 18 widens, and the fluid flows into the second hydraulic pipe 18 ) to move quickly. Accordingly, the door connected to the housing 10 opens or closes quickly.

Meanwhile, the internal support part 20 is disposed in the internal space of the housing 10.

The internal support unit 20 can move in the internal space of the housing 10 by the internal support driving unit 40, which will be described later. Additionally, the internal support portion 20 may support the piston assembly 30, which will be described later.

Referring to Figure 3, the internal support part 20 includes a first internal support part 21, a second internal support part 22, and a connection support part 23.

The first internal support part 21, the second internal support part 22, and the connection support part 23 are not limited to a specific shape. In FIG. 3, each of the first inner support part 21, the second inner support part 22, and the connection support part 23 is formed in a bar shape or a plate shape with a preset length, but is not limited to this shape. If the inner support 20 is movable inside the housing 10 and can support the piston assembly 30, the first inner support 21, the second inner support 22 and the connecting support 23 can be configured to various It can be formed into a shape.

The first internal support part 21, the second internal support part 22, and the connection support part 23 may be manufactured separately and combined with each other, or may be formed as one piece.

The first internal support part 21 is disposed on the third side wall 13 of the housing 10. In other words, the first internal support portion 21 is disposed adjacent to the third side wall 13 of the housing 10. Here, the 'position adjacent to the third side wall 13 of the housing 10' means that the first internal support part 21 is located far from the fourth side wall 14 of the housing 10 and the third side wall 13 ) indicates that it is in a close location.

The first internal support part 21 is connected to the internal support driving part 40 disposed on the outside of the housing 10. Specifically, one end of the first internal support unit 21 is engaged with the connection gear 42 of the internal support drive unit 40.

The first internal support part 21 can move in the internal space of the housing 10 by driving the internal support driving part 40. As the first inner support 21 moves, the connection support 23 connected to the first inner support 21 and the second inner support 22 connected to the connection support 23 also move. That is, when the first internal support part 21 moves, the internal support part 20 moves.

Specifically, the first internal support unit 21 may move along the longitudinal direction of the housing 10 inside the housing 10 by driving the internal support driving unit 40 . Here, the longitudinal direction of the housing 10 represents the left and right direction (horizontal direction) of the housing 10 in FIGS. 1 and 2, for example.

When the motor 41 of the internal support drive unit 40 rotates clockwise (or counterclockwise), the first internal support unit 21 moves from the third side wall 13 of the housing 10 to the fourth. It moves toward the side wall 14 (from left to right) by a preset distance. Alternatively, when the motor 41 of the internal support drive unit 40 rotates counterclockwise (or clockwise), the first internal support unit 21 moves from the fourth side wall 14 side of the housing 10 to the third side wall side. (13) Move to the side (from right to left) by a preset distance.

The second internal support part 22 is disposed on the fourth side wall 14 of the housing 10. In other words, the second internal support portion 22 is disposed adjacent to the fourth side wall 14 of the housing 10. Here, the 'position adjacent to the fourth side wall 14 of the housing 10' means that the second internal support portion 22 is located far from the third side wall 13 of the housing 10 and the fourth side wall 14 ) indicates that it is in a close location.

The second inner support part 22 is connected to the first inner support part 21 by a connecting support part 23.

The second internal support portion 22 supports the piston assembly 30, which will be described later.

The connection support portion 23 connects the first inner support portion 21 and the second inner support portion 22. Specifically, the connection support part 23 is disposed between the first inner support part 21 and the second inner support part 22. One end of the connection support part 23 is connected to the first internal support part 21, and the other end of the connection support part 23 is connected to the second internal support part 22.

The connection support portion 23 contacts the inner surface of the housing 10.

Specifically, the connection support portion 23 contacts one end 151 and/or the other end 152 of the first relief pipe 15 inside the housing 10 and communicating with the inside of the housing 10. Additionally, the connection support portion 23 contacts one end 161 and/or the other end 162 of the second relief pipe 16 inside the housing 10 and communicating with the inside of the housing 10. By this, the connection support portion 23 moves inside the housing 10 and connects to one end 151 and/or the other end 152 of the first relief pipe 15, or one end of the second relief pipe 16. The portion 161 and/or the other end 162 are opened and closed.

The connection support portion 23 includes a first hole 231 and a second hole 232 through which fluid moves.

The first hole 231 and the second hole 232 are formed in the connection support part 23 and are holes that penetrate the connection support part 23.

The first hole 231 is disposed on the first internal support portion 21. In other words, the first hole 231 is disposed adjacent to the first internal support portion 21. Here, 'position adjacent to the first internal support part 21' indicates that the first hole 231 is located far from the second internal support part 22 and close to the first internal support part 21.

When the first hole 231 communicates with the first relief pipe 15 (specifically, the other end 152 of the first relief pipe 15) by moving the connection support portion 23, the inside of the housing 10 The fluid contained in can move to the first relief pipe 15 through the first hole 231.

In addition, if the first hole 231 does not communicate with the first relief pipe 15 (specifically, the other end 152 of the first relief pipe 15) due to movement of the connection support portion 23, the housing 10 ) is blocked by the connection support portion 23 and cannot move to the first relief pipe 15 through the first hole 231.

The second hole 232 is disposed on the second internal support portion 22. In other words, the second hole 232 is disposed adjacent to the second internal support portion 22. Here, 'position adjacent to the second internal support part 22' indicates that the second hole 232 is located far from the first internal support part 21 and close to the second internal support part 22.

When the second hole 232 communicates with the second relief pipe 16 (specifically, the other end 162 of the second relief pipe 16) by moving the connection support portion 23, the inside of the housing 10 The fluid contained in can move to the second relief pipe 16 through the second hole 232.

In addition, if the second hole 232 does not communicate with the second relief pipe 16 (specifically, the other end 162 of the second relief pipe 16) due to movement of the connection support portion 23, the housing 10 ) is blocked by the connection support portion 23 and cannot move to the second relief pipe 16 through the second hole 232.

Meanwhile, the piston assembly 30 is disposed inside the housing 10 and is supported by the internal support portion 20.

The piston assembly 30 can move in the internal space of the housing 10.

The piston assembly 30 is interlocked with the door by the piston driving unit 50, which will be described later. That is, the piston assembly 30 moves in one direction or in the opposite direction in the internal space of the housing 10 as the door is opened or closed.

Referring to Figure 4, the piston assembly 30 includes a first piston 31, a second piston 32, an upper connection part 33, a lower connection part 34, and an elastic member 35.

The first piston 31 is disposed on the third side wall 13 of the housing 10. In other words, the first piston 31 is disposed at a position far from the fourth side wall 14 of the housing 10 and adjacent to the third side wall 13 of the housing 10.

The first piston 31 may repeat linear reciprocating motion in the internal space of the housing 10.

The first piston 31 is connected to the second piston 32 by an upper connection part 33 and a lower connection part 34.

The first piston 31 includes a first check valve 31C.

The first check valve 31C is disposed on the first piston 31. Specifically, the first check valve 31C is disposed through (across) the first piston 31 in the thickness direction of the first piston 31.

The first check valve 31C is a one-way valve. Specifically, the fluid contained in the housing 10 can pass through the first piston 31 through the first check valve 31C and move from the right to the left of the first piston 31, but cannot move in the opposite direction. .

The second piston 32 is disposed on the fourth side wall 14 of the housing 10. In other words, the second piston 32 is disposed at a position far from the third side wall 13 of the housing 10 and adjacent to the fourth side wall 14 of the housing 10.

The second piston 32 may repeat linear reciprocating motion in the internal space of the housing 10.

The second piston 32 is connected to the first piston 31 by an upper connection part 33 and a lower connection part 34.

The second piston 32 includes a second check valve 32C.

The second check valve 32C is disposed on the second piston 32. Specifically, the second check valve 32C is disposed through (across) the second piston 32 in the thickness direction of the second piston 32.

The second check valve 32C is a one-way valve. Specifically, the fluid contained in the housing 10 can pass through the second piston 32 through the second check valve 32C and move from the left to the right of the second piston 32, but cannot move in the opposite direction. .

The first piston 31 and the second piston 32 are spaced apart by a preset distance by the upper connection part 33 and the lower connection part 34.

The upper connection part 33 and the lower connection part 34 connect the first piston 31 and the second piston 32 and support the first piston 31 and the second piston 32.

The upper connection part 33 and the lower connection part 34 are not limited to a specific shape. In FIG. 4, the upper connection part 33 and the lower connection part 34 are formed in a bar shape (or plate shape) with a preset length, but are not limited to this shape. If the first piston 31 and the second piston 32 can be connected and supported, the upper connection part 33 and the lower connection part 34 can be formed in various shapes.

The upper connection portion 33 connects one side of the first piston 31 and one side of the second piston 32. Here, one side of the first piston 31 is located at a point (position) located on the edge of the first piston 31 in the radial direction of the first piston 31 or adjacent to the edge of the first piston 31. It represents a point (position) located in a certain direction, and one side of the second piston 32 is a point (position) located at the edge of the second piston 32 in the radial direction of the second piston 32. Or, it represents a point (position) adjacent to an edge.

The lower connection portion 34 connects the other side (or other side) of the first piston 31 and the other side (or other side) of the second piston 32. Here, the other side (or other side) of the first piston 31 is any other point (position) located at the edge of the first piston 31 in the radial direction of the first piston 31 or the first piston ( Indicates another point (position) located adjacent to the edge of 31). The other side (or other side) of the first piston 31 may be in a position opposite to the one side of the first piston 31.

The lower connection portion 34 includes gear teeth 341 formed on the lower connection portion 34.

The gear teeth 341 are formed in the lower connection portion 34 to a preset length. Accordingly, the lower connection portion 34 can function as a rack gear.

The gear teeth 341 mesh with the rotation gear (pinion gear) 51 of the piston driving unit 50, which will be described later. When the rotation gear 51 of the piston drive unit 50 rotates, the lower connection part 34 moves in a straight line. Here, linear movement indicates movement in the left and right direction (horizontal direction) in the internal space of the housing 10. The linear movement of the lower connection portion 34 represents the linear movement of the piston assembly 30.

According to an example of an embodiment of the present invention, gear teeth 341 may be formed on the upper connection part 33, and the upper connection part 33 may function as a rack gear.

The internal space of the housing 10 is partitioned by the first piston 31 and the second piston 32 of the piston assembly 30. In other words, the internal space of the housing 10 is divided into a first chamber (A), an intermediate chamber (B), and a second chamber (C) divided by the first piston 31 and the second piston 32. .

Referring to FIG. 2, when the piston assembly 30 is disposed in the internal space of the housing 10, the first chamber A is connected to the third side wall 13 of the housing 10 and the piston assembly 30. represents the space between the first piston 31, the intermediate chamber (B) represents the space between the first piston 31 and the second piston 32 of the piston assembly 30, and the second chamber (C ) represents the space between the second piston 32 of the piston assembly 30 and the fourth side wall 14 of the housing 10.

The volumes of the first chamber (A) and the second chamber (C) change as the piston assembly 30 moves.

Meanwhile, the elastic member 35 may be provided in any form capable of storing restoring force while its shape is deformed and transmitting the restoring force to the outside while returning to its original shape. The elastic member 35 may be, for example, a coil spring.

The elastic member 35 is disposed between the inner support 20 and the piston assembly 30. Specifically, when the inner support 20 and the piston assembly 30 are disposed in the inner space of the housing 10, the elastic member 35 is connected to the second inner support 22 of the inner support 20 and the piston assembly. It is disposed between the second piston 32 of (30).

The elastic member 35 is fixed to the second inner support portion 22 of the inner support portion 20 and the second piston 32 of the piston assembly 30. That is, one end of the elastic member 35 is fixed to the second piston 32 of the piston assembly 30, and the other end of the elastic member 35 is fixed to the second internal support part 22 of the internal support part 20. do.

When the internal support 20 moves while the piston assembly 30 does not move, the elastic member 35 is tensioned (relaxed) or compressed (contracted). Additionally, when the piston assembly 30 moves without the internal support 20 moving, the elastic member 35 is tensioned (relaxed) or compressed (contracted).

Meanwhile, the internal support driving unit 40 moves the internal support unit 20.

The internal support drive unit 40 is fixed to the housing 10 and/or the door.

Looking again at FIG. 1, the internal support drive unit 40 includes a motor 41, a linear gear 43, and a connecting gear 42.

The motor 41 represents a commonly used motor. In other words, the motor generates rotational force by the force acting between the current flowing in the coil of the rotor and the magnetic field of the stator, and represents a machine that obtains rotational force from electrical energy.

The motor 41 includes wires (not shown) and is driven by electricity.

The motor 41 is fixed to the housing 10 and/or the door.

The linear gear 43 may be connected to the rotation axis of the motor or may be the rotation axis of the motor.

The linear gear 43 is formed in the shape of a bar with a circular cross-section and a preset length.

The linear gear 43 includes threads formed along the outer peripheral surface.

When the motor drives, the linear gear 43 rotates clockwise or counterclockwise.

The connecting gear 42 connects the linear gear 43 and the internal support portion 20.

Specifically, one end of the connecting gear 42 is movably connected to the linear gear 43, and the other end of the connecting gear 42 is connected to the internal support part 20 (specifically, the first internal support part 21) and connected.

One end of the connecting gear 42 includes a through hole. A thread is formed on the inner peripheral surface of one end of the connection gear 42 surrounding the through hole. A linear gear 43 is disposed in the through hole.

When the linear gear 43 rotates clockwise or counterclockwise by driving the motor 41, one end of the connecting gear 42 moves away from the motor 41 (from left to right) or moves toward the motor 41. ) moves towards (from right to left) a preset distance. Accordingly, the internal support portion 20 connected to the other end of the connecting gear 42 also moves together with the connecting gear 42.

Although not shown, a slot, which is a hole in which the connection gear 42 is placed, is formed in the housing 10. The slot is formed to a preset length along the longitudinal direction of the housing 10. The connecting gear 42 moves along the slot.

A sealing member is disposed in the slot. The slot is sealed by the sealing member. Accordingly, even if the connection gear 42 moves along the slot, the fluid contained inside the housing 10 does not leak out to the outside through the slot.

According to an example of another embodiment of the present invention, the internal support drive unit 40 may be composed of a solenoid.

The solenoid represents a commonly used solenoid. The solenoid generally has a structure in which a copper wire is wound around a fixed iron core in a coil shape, and a movable iron core moves up and down around the center of the solenoid.

The solenoid is fixed to the housing 10 and/or the door.

A solenoid is a device that converts electrical energy into mechanical movement. When current is applied to the solenoid, the movable iron core moves by electromagnetic force, and when the current is cut off from the solenoid, the movable iron core returns to its original position by the restoring force of the spring fastened to the movable iron core.

The solenoid of the internal support drive unit 40 according to an example of another embodiment of the present invention corresponds to the motor 41 of the internal support drive unit 40 according to an example of an embodiment of the present invention. And, the movable iron core of the solenoid corresponds to the linear gear 43. Additionally, a connecting member corresponding to the connecting gear 42 is connected to the movable iron core of the solenoid. When the connecting member moves together with the movable iron core, the internal support portion 20 connected to the connecting member also moves together with the connecting member.

Meanwhile, the piston driving unit 50 moves the piston assembly 30.

The piston driving unit 50 connects the housing 10 and the fixture.

The piston drive unit 50 includes a rotating gear 51 and a connecting link 52.

The rotating gear 51 is disposed inside the housing 10. Specifically, the rotating gear 51 is disposed inside the housing 10 at a position where it engages with the gear teeth 341 formed on the piston assembly 30 (specifically, the lower connection portion 34).

The rotating gear 51 engages with gear teeth 341 formed on the lower connection portion 34 of the piston assembly 30 and can rotate.

The rotating gear 51 is a type of pinion gear, and the gear teeth 341 of the lower connection portion 34 constituting the piston assembly 30 are a type of rack gear.

When the rotary gear 51 rotates, the lower connection portion 34 moves linearly within the housing 10 along the longitudinal direction of the housing 10. Specifically, when the rotation gear 51 rotates clockwise or counterclockwise, the lower connection portion 34 moves straight within the housing 10 in one direction or in a direction opposite to one direction. That is, by the rotation of the rotary gear 51, the piston assembly 30 moves linearly in one direction or in a direction opposite to one direction within the housing 10. Also, on the contrary, when the piston assembly 30 moves linearly in one direction or the opposite direction within the housing 10, the rotation gear 51 rotates clockwise or counterclockwise.

The connecting link 52 is connected to the rotating gear 51.

Depending on the trajectory in which the connecting link 52 moves, the rotating gear 51 rotates clockwise or counterclockwise. Also, on the contrary, when the rotation gear 51 rotates clockwise or counterclockwise, the connecting link 52 moves along a constant trajectory.

One end of the connecting link 52 is connected to the rotating gear 51, and the other end of the connecting link 52 is connected to the fixture. The fixture refers to a wall or door frame on which a door is installed.

One end of the connecting link 52 is connected to the rotating gear 51 and rotates the rotating gear 51.

One end of the connecting link 52 may be connected to the rotating gear 51 by a bolt or screw fastening method. The fastening method of one end of the connecting link 52 and the rotating gear 51 is all fastening methods in which one end of the connecting link 52 rotates the rotating gear 51 when the connecting link 52 moves. Includes.

The other end of the connecting link 52 is rotatably connected to the fixture. For example, the connection link 52 may be connected to the fixture through a hinge coupling.

A plurality of connection links 52 may be provided.

For example, the connecting link 52 includes a first connecting link and a second connecting link. In an example of this embodiment, one end of the first connecting link is rotatably connected to the rotating gear 51, the other end of the first connecting link is rotatably connected to one end of the second connecting link, and the second connecting link is rotatably connected to one end of the second connecting link. The other end of the connection link is rotatably connected to the fixture.

By the piston driving unit 50, the piston assembly 30 is interlocked with the door. That is, as the door is opened or closed, the piston assembly 30 moves in one direction or in the opposite direction in the internal space of the housing 10.

Specifically, when the door is opened or closed, the housing 10 installed on the door moves together with the door. At this time, the connecting link 52 rotatably connected to the rotating gear 51 disposed in the housing 10 also moves. As the connection link 52 moves, the rotation gear 51 rotates clockwise or counterclockwise. As the rotary gear 51 rotates, the piston assembly 30 moves linearly in one direction or in the opposite direction within the housing 10. Also, on the contrary, when the piston assembly 30 moves in one direction or in the opposite direction in the inner space of the housing 10, the door is opened or closed.

A conventional door closer performs the role of closing an open door, but does not perform the role of opening a closed door.

On the other hand, the automatic door opening and closing device according to the example of the first embodiment of the present invention can automatically open the door and automatically close the opened door. Here, automatic indicates that the door is opened or closed by the operation of the automatic door opening and closing device of the present invention even if the user does not open or close the door.

The automatic door opening and closing device according to the example of the first embodiment of the present invention includes a control unit.

The control unit controls the internal support drive unit 40.

Specifically, when a door open signal or a door close signal, which will be described later, is input, the control unit controls the internal support drive unit 40 so that the internal support drive unit 40 operates.

The door open signal represents an electrical signal generated when a user operates a door open button installed inside or outside the door. Additionally, the door closing signal represents an electrical signal generated when a user operates a door closing button installed inside or outside the door.

The door open button and the door close button may be formed as one door button. In other words, when the door button is activated while the door is closed, a door open signal is generated and a door open signal is input to the control unit, and when the door button is activated while the door is open, a door close signal is generated and a door close signal is input to the control unit. is entered.

Alternatively, the door open signal represents an electrical signal generated when a user recognizes a door card in a door card recognition system installed inside or outside the door while the door is closed. Additionally, the door closing signal represents an electrical signal generated when a user recognizes a door card in a door card recognition system installed inside or outside the door while the door is open.

When a door open signal or a door close signal is generated as the door card is recognized by the door card recognition system, the door open signal or door close signal is input to the control unit.

The door open signal or the door close signal may be generated by a device or method other than the door open button or door close button, door button, and door card recognition system described above.

When a door open signal or a door close signal is input, the control unit turns on or off the electricity supplied to the motor 41 or solenoid of the internal support drive unit 40 to operate the motor 41 or solenoid. Or it may stop working.

The operating principle of the automatic door opening and closing device according to the example of the first embodiment of the present invention is as follows.

The automatic door opening and closing device according to the example of the first embodiment of the present invention is mounted on the door and the fixture.

The automatic door opening and closing device of the present invention includes a housing 10, an internal support part 20 and a piston assembly 30 disposed inside the housing 10, and an internal support part 20 disposed outside the housing 10. ) and an internal support drive unit 40 connected to the piston assembly 30.

The housing 10 may be placed (mounted) on a door, for example, and the connecting link 52 of the piston drive unit 50 may be connected (fastened) to a fixture.

First, the process by which the automatic door opening and closing device of the present invention automatically opens a closed door will be described. The automatic means that the door is opened or closed by the operation of the automatic door opening and closing device of the present invention even if the user does not open or close the door.

Referring to Figure 5, the door is closed and the elastic member 35 is in a normal state. Here, the normal state of the elastic member 35 refers to a state in which the elastic member 35 is not stretched or compressed.

In the closed state of the door (shown in FIG. 5), the first hole 231 of the inner support 20 and the first relief tube 15 of the housing 10 (specifically, the other end 152) are They do not communicate with each other. And, the second hole 232 of the internal support part 20 and the second relief pipe 16 (specifically, the other end 162) of the housing 10 communicate with each other.

5 and 6, when a door open signal is input to the control unit in a closed state (state shown in FIG. 5), the control unit operates the internal support drive unit 40 (e.g., motor 41). I order it. By the operation of the internal support drive unit 40, the internal support unit 20 moves in one direction. Here, one direction represents a direction from the third side wall 13 side of the housing 10 to the fourth side wall 14 side.

Specifically, when the motor 41 of the internal support drive unit 40 rotates clockwise (or counterclockwise), the internal support unit 20 is pulled from the third side wall 13 side of the housing 10. 4 Move toward the side wall 14 (from left to right) a preset distance. At this time, since the piston assembly 30 is in a state not moving in one direction (the door is still closed), the elastic member 35 disposed between the second piston 32 and the second internal support portion 22 is The support portion 20 (specifically, the second inner support portion 22) is tensioned as it moves in one direction. That is, the door is in a closed state, and the elastic member 35 is in a tensioned state.

As shown in FIG. 6, as the inner support 20 moves a preset distance in one direction, the first hole 231 of the inner support 20 and the first relief tube 15 of the housing 10 (Specifically, the other end 152) communicates with each other, and the second hole 232 of the internal support part 20 and the second relief pipe 16 of the housing 10 (specifically, the other end 162) do not communicate with each other.

6 and 7, when the elastic member 35 is stretched while the door is closed (state shown in FIG. 6), the elastic member 35 generates a restoring force, and the restoring force of the elastic member 35 The piston assembly 30 moves in one direction. Here, one direction represents a direction from the third side wall 13 side of the housing 10 to the fourth side wall 14 side.

As the piston assembly 30 moves in one direction, the fluid contained in the second chamber (C) moves to the intermediate chamber (B) through the second hydraulic pipe 18, and the fluid flows through the second hydraulic valve ( 18v) moves slowly.

At this time, the second relief tube 16 (specifically, the other end 162) is blocked by the connection support part 23 of the internal support part 20, so that the fluid contained in the second chamber C flows through the second relief tube. It is not possible to move to the middle chamber (B) through (16).

In addition, since the second check valve 32C disposed on the second piston 32 only allows fluid to move from the intermediate chamber B to the second chamber C, the fluid received in the second chamber C Fluid cannot move to the intermediate chamber (B) through the second check valve (32C).

And, as the piston assembly 30 moves in one direction, the fluid contained in the intermediate chamber (B) flows through the first hole 231 of the internal support 20 and the first relief tube 15 of the housing 10 ( Specifically, it moves to the first chamber (A) through the other end (152).

In addition, the first check valve 31C disposed on the first piston 31 only allows fluid to move from the intermediate chamber (B) to the first chamber (A), so the fluid contained in the intermediate chamber (B) It moves to the first chamber (A) through the first check valve (31C).

As the piston assembly 30 moves in one direction, the rotation gear 51 of the piston drive unit 50 engaged with the gear teeth 341 of the piston assembly 30 rotates. Accordingly, the connecting link 52 rotatably connected to the rotating gear 51 moves, and the door connected to the connecting link 52 also moves (opens).

As shown in Figure 7, the door is open, and the elastic member 35 is returned to its original shape and is in a normal state.

Meanwhile, when the door is open (state shown in FIG. 7), the user can close the door.

When the user applies force to close the open door, the piston drive unit 50 operates (i.e., the connecting link 52 moves and the rotary gear 51 rotates), and the piston assembly 30 moves in one direction. You can move in any direction. Here, the direction opposite to one direction represents a direction from the fourth side wall 14 side of the housing 10 to the third side wall 13 side.

When the user closes the open door with force, the fluid contained in the first chamber (A) flows into the intermediate chamber ( You can move to B). And, the fluid contained in the intermediate chamber (B) may move to the second chamber (C) through the second hydraulic pipe 18 and the second check valve 32C. Accordingly, the piston assembly 30 can move in one direction opposite to the other, the elastic member 35 is tensioned, and the door is closed.

Next, the process by which the automatic door opening and closing device of the present invention automatically closes an open door will be described.

7 and 8, when a door closing signal is input to the control unit while the door is open (state shown in FIG. 7), the control unit operates the internal support drive unit 40 (e.g., motor 41). I order it. By the operation of the internal support drive unit 40, the internal support unit 20 moves in one direction opposite to the other. Here, the direction opposite to one direction represents a direction from the fourth side wall 14 side of the housing 10 to the third side wall 13 side.

Specifically, when the motor 41 of the internal support drive unit 40 rotates clockwise (or counterclockwise), the internal support unit 20 moves from the fourth side wall 14 side of the housing 10 to the third side wall ( 13) Move sideways (from right to left) a preset distance. At this time, since the piston assembly 30 is in a state where it is not moving in the opposite direction (the door is still open), the elastic member 35 disposed between the second piston 32 and the second internal support portion 22 ) is compressed as the inner support 20 (specifically, the second inner support 22) moves in one direction opposite to the other. That is, the door is in an open state, and the elastic member 35 is in a compressed state.

As shown in FIG. 8, as the inner support 20 moves by a preset distance in the opposite direction of one direction, the first hole 231 of the inner support 20 and the first relief tube of the housing 10 (15) (specifically, the other end 152) is not in communication with each other, and the second hole 232 of the internal support 20 and the second relief pipe 16 of the housing 10 (specifically, the other end) (162)) are connected to each other.

Looking at FIG. 5 again, FIG. 5 shows a state in which the piston assembly moves and the door is closed. That is, Figure 5 is a cross-sectional view schematically showing the automatic door opening and closing device of the present invention in a closed state.

5 and 8, when the elastic member 35 is compressed while the door is open (state shown in FIG. 8), the elastic member 35 generates a restoring force, and the restoring force of the elastic member 35 As a result, the piston assembly 30 moves in the opposite direction. Here, the direction opposite to one direction represents a direction from the fourth side wall 14 side of the housing 10 to the third side wall 13 side.

As the piston assembly 30 moves in the opposite direction, the fluid contained in the first chamber (A) moves to the intermediate chamber (B) through the first hydraulic pipe 17, and the fluid flows into the first chamber (A). It moves slowly by the hydraulic valve (17v).

At this time, the first relief tube 15 (specifically, the other end 152) is blocked by the connection support part 23 of the internal support part 20, so that the fluid contained in the first chamber (A) flows through the first relief tube. It is not possible to move to the middle chamber (B) through (15).

In addition, since the first check valve 31C disposed on the first piston 31 only allows fluid to move from the intermediate chamber B to the first chamber A, the fluid received in the first chamber A Fluid cannot move to the intermediate chamber (B) through the first check valve (31C).

And, as the piston assembly 30 moves in the opposite direction of one direction, the fluid contained in the intermediate chamber (B) flows through the second hole 232 of the internal support 20 and the second relief tube of the housing 10 ( 16) (specifically, the other end 162) and moves to the second chamber (C).

In addition, the second check valve 32C disposed on the second piston 32 only allows fluid to move from the intermediate chamber B to the second chamber C, so the fluid contained in the intermediate chamber B It moves to the second chamber (C) through the second check valve (32C).

As the piston assembly 30 moves in the opposite direction, the rotation gear 51 of the piston drive unit 50 engaged with the gear teeth 341 of the piston assembly 30 rotates. Accordingly, the connecting link 52 rotatably connected to the rotating gear 51 moves, and the door connected to the connecting link 52 also moves (closes).

As shown in Figure 5, the door is closed, and the elastic member 35 is returned to its original shape and is in a normal state.

Meanwhile, when the door is closed (state shown in FIG. 5), the user can open the door.

When a user applies force to open a closed door, the piston drive unit 50 operates (i.e., the connecting link 52 moves and the rotary gear 51 rotates), and the piston assembly 30 moves in one direction. You can move. Here, one direction represents a direction from the third side wall 13 side of the housing 10 to the fourth side wall 14 side.

When the user applies force to open the closed door, the fluid contained in the second chamber (C) flows into the middle chamber (C) through the second hole 232 of the inner support 20 and the second relief pipe 16 of the housing 10. You can move to B). And, the fluid contained in the intermediate chamber (B) may move to the first chamber (A) through the first hydraulic pipe (17) and the first check valve (31C). Accordingly, the piston assembly 30 can move in one direction, the elastic member 35 is compressed, and the door is opened.

Below, an automatic door opening and closing device according to an example of the second embodiment of the present invention will be described.

FIG. 9 shows an automatic door opening and closing device according to an example according to a second embodiment of the present invention, and FIG. 10 is a cross-sectional view schematically showing the housing 100 of FIG. 9.

9 and 10, the automatic door opening and closing device according to the example of the second embodiment of the present invention includes a housing 100, an internal moving part 200, a damper assembly 300, and a damper driving part 400. ) and a body driver 500.

The housing 100 forms the exterior of the automatic door opening and closing device of the present invention.

The housing 10 includes a first side wall 101 that forms the exterior of the automatic door opening and closing device of the present invention, a second side wall 102 facing the first side wall 101, the first side wall 101, and the A third side wall 103 connecting one side of the second side wall 102, a fourth side wall connecting the first side wall 101 and the other side of the second side wall 102 and facing the third side wall 103. It includes a side wall 104, a fifth side wall (not shown), and a sixth side wall (not shown). 9 and 10, the first side wall 101 represents the upper side wall, the second side wall 102 represents the lower side wall, the third side wall 103 represents the left wall, and the fourth side wall 104 represents the right side wall, the fifth side wall represents the front side wall, and the sixth side wall represents the rear side wall.

The first side wall 101 represents a side wall (upper side wall) that forms the upper surface of the housing 100. The second side wall 102 represents a side wall (lower side wall) that forms the lower surface of the housing 100. The fifth side wall represents a side wall (front side wall) that forms the front of the housing 100, and connects one side of the first side wall 101 and one side of the second side wall 102 in the front-back direction. The sixth side wall represents a side wall (rear side wall) representing the back of the housing 100, and connects the other side of the first side wall 101 and the other side of the second side wall 102 in the front-back direction. The third side wall 103 represents a side wall (left side wall) forming the left side of the housing 100, and the first side wall 101, the second side wall 102, and the fifth side wall are formed in the left and right direction (horizontal direction). and one side of each of the sixth side walls. The fourth side wall 104 represents a side wall (right side wall) forming the right side of the housing 100, and is formed in the left and right direction (horizontal direction) by a first side wall 101, a second side wall 102, a fifth side wall, and The other side of each of the sixth side walls is connected. Here, the other side represents the side that is opposed to one side.

The first side wall 101, the second side wall 102, the third side wall 103, the fourth side wall 104, the fifth side wall, and the sixth side wall may be formed as a whole in a circular or oval shape, or It may include a partially circular or oval shape.

The housing 100 is formed in the shape of a hollow polygonal cylinder having a preset length in one direction. The polygonal cylinder shape may partially include a circular shape or an elliptical shape. In addition, the one direction represents the left and right direction (horizontal direction) in FIGS. 9 and 10, for example.

The automatic door opening and closing device according to the example of the second embodiment of the present invention does not accommodate fluid inside the housing 100. The automatic door opening and closing device according to the second embodiment of the present invention has a simple structure and improved product reliability because it does not have a fluid or a passage through which the fluid moves.

The housing 100 has an internal space. In other words, the housing 100 has an internal space having a preset length in one direction (eg, horizontal direction).

The internal space is formed surrounded by the first side wall 101, the second side wall 102, the third side wall 103, the fourth side wall 104, the fifth side wall, and the sixth side wall of the housing 100. The internal moving part 200, the support link 305 of the damper assembly 300, and the rotation gear 501 of the body driving part 500 are disposed in the internal space.

Meanwhile, the housing 100 includes a plurality of slots and a linear guide 105.

The plurality of slots include a first slot 106, a second slot 107, and a third slot 108.

The first slot 106 is formed to have a preset length along the longitudinal direction of the housing 100.

In the first slot 106, damper contact teeth 202 of the internal moving part 200, which will be described later, or a first rotary damper 301 or a second rotary damper 302 of the damper assembly 300 may be disposed. That is, the damper contact teeth 202 of the internal moving part 200 and the first rotary damper 301 or the second rotary damper 302 of the damper assembly 300 are engaged with each other through the first slot 106. You can. In an example embodiment in which the damper contact teeth 202 are disposed in the first slot 106, the damper contact teeth 202 may move along the longitudinal direction of the first slot 106.

9 and 10, the first slot 106 is formed in the first side wall 101 of the housing 100, but the present invention is not limited thereto. The first slot 106 may be formed in the fifth side wall or the second side wall 102 depending on the embodiment.

The second slot 107 is formed to be spaced apart from the first slot 106 by a preset distance in the longitudinal direction of the housing 100.

The second slot 107 is formed to have a preset length along the longitudinal direction of the housing 100.

The support link 305 of the damper assembly 300 is disposed in the second slot 107. The support link 305 can move along the longitudinal direction of the second slot 107.

9 and 10, the second slot 107 is formed in the first side wall 101 of the housing 100, but the present invention is not limited thereto. The second slot 106 may be formed in the second side wall 102 according to an example of the embodiment.

The longitudinal central axis of the first slot 106 and the longitudinal central axis of the second slot 107 overlap. Accordingly, the

rotary dampers

301 and 302 and the support link 305 of the damper assembly 300 are disposed parallel to the longitudinal central axis of the first slot 106 or the second slot 107, so that the damper assembly 300 can operate smoothly.

The third slot 108 is formed at a position facing the second slot 107. Specifically, the third slot 108 is formed at a position facing the second slot 107 in a direction perpendicular to the longitudinal direction of the housing 100.

For example, as shown in FIGS. 9 and 10, when the second slot 107 is formed on the first side wall 101 of the housing 100, the third slot 108 is formed on the first side wall 101 of the housing 100. It is formed on the second side wall 102, and the third slot 108 is formed at a position facing the second slot 107 in the direction perpendicular to the longitudinal direction of the housing 100 in the second side wall 102. do.

The third slot 108 is formed to have a preset length along the longitudinal direction of the housing 100.

The third slot 108 is where the support link 305 of the damper assembly 300 is disposed. The support link 305 can move along the longitudinal direction of the third slot 108.

That is, the support link 305 of the damper assembly 300 is disposed in the second slot 107 and the third slot 108. Specifically, the support link 305 is disposed through the second slot 107 and the third slot 108 in a direction perpendicular to the longitudinal direction of the second slot 107 and the third slot 108. , it can move along the longitudinal direction of the second slot 107 and the third slot 108. The support link 305 is disposed to penetrate the housing 100 in a direction perpendicular to the longitudinal direction of the housing 100.

The lengths of the second slot 107 and the third slot 108 may be the same.

The linear guide 105 is disposed in the inner space of the housing 100.

As shown in FIGS. 9 and 10, the linear guide 105 has one end and the other end connected to the inner surface of the third side wall 103 and the fourth side wall 104 of the housing 100, respectively. It may be formed in a rod shape. A plurality of linear guides 105 may be disposed in the internal space of the housing 100, or one linear guide may be disposed.

The linear guide 105 guides and supports the internal moving part 200, which will be described later, so that the internal moving part 200 moves along the longitudinal direction of the housing 100. That is, the internal moving part 200 can move along the linear guide 105 in the internal space of the housing 100.

The linear guide 105 may be an LM rail of the commonly used LM Guide. A commonly used LM guide includes an LM block and an LM rail, and the LM block can move along the LM rail. Here, the LM block may correspond to the internal moving part 200 of the present invention, and the LM rail may correspond to the linear guide 105 of the present invention.

9 and 11, the internal moving part 200 is disposed inside the housing 100, and is guided and supported by a linear guide 105.

The internal moving part 200 can move in the internal space of the housing 100.

The internal moving unit 200 is linked with the door by the body driving unit 500, which will be described later. That is, the internal moving part 200 moves in one direction or in the opposite direction in the internal space of the housing 10 as the door is opened or closed.

The internal moving part 200 includes a body 201, damper contact teeth 202, gear teeth 203, and an elastic member 204.

The body 201 forms the body of the internal moving part 200.

The body 201 is formed to move along the linear guide 105 of the housing 100.

The body 201 is not limited to a specific shape. The body 201 can be formed in various shapes as long as damper contact teeth 202 and gear teeth 203, which will be described later, can be formed.

The damper contact teeth 202 are formed on the body 201. Specifically, the damper contact teeth 202 are formed on one surface of the body 201 (the upper surface of the body 201 in FIGS. 9 and 11) to a preset length.

The damper contact teeth 202 are exposed to the outside of the housing 100 through the first slot 106 formed in the housing 100.

The damper contact teeth 202 serve as a rack gear.

The damper contact teeth 202 may be integrally formed on one surface of the body 201, or may be manufactured separately and fastened to one surface of the body 201.

The damper contact teeth 202 engage with the

rotary dampers

301 and 302 of the damper assembly 300, which will be described later. When the body 201 moves linearly in the internal space of the housing 100, the

rotary dampers

301 and 302 allow the body 201 to move slowly.

The gear teeth 203 are formed on the body 201. Specifically, the gear teeth 203 are formed to a preset length on another surface of the body 201 (the lower surface of the body 201 in FIGS. 9 and 11).

Gear teeth 203 serve as a rack gear.

The gear teeth 203 may be integrally formed on one side of the body 201, or may be manufactured separately and fastened to another side of the body 201.

The gear teeth 203 mesh with the rotation gear (pinion gear) 501 of the body drive unit 500, which will be described later. When the rotation gear 501 rotates, the body 201 moves in a straight line. Here, linear movement indicates movement in the longitudinal direction of the housing 100. That is, linear movement represents movement in the left and right direction (horizontal direction) in the internal space of the housing 100. The linear movement of the body 201 represents the linear movement of the internal moving part 200.

The elastic member 204 may be provided in any form capable of storing restoring force as its shape is deformed and transmitting the restoring force to the outside as it returns to its original shape. The elastic member 204 may be, for example, a coil spring.

The elastic member 204 is disposed in the inner space of the housing 100 and is disposed between the body 201 and the damper assembly 300. Specifically, the elastic member 204 is disposed between one side of the body 201 and the support link 305 of the damper assembly 300.

The elastic member 204 is fixed to one side of the body 201 and the support link 305 of the damper assembly 300. That is, one end of the elastic member 204 is fixed to one side of the body 201, and the other end of the elastic member 204 is fixed to the support link 305 of the damper assembly 300.

When the support link 305 of the damper assembly 300 moves while the internal moving part 200 does not move, the elastic member 204 is tensioned (relaxed) or compressed (contracted). Additionally, when the internal moving part 200 moves while the support link 305 of the damper assembly 300 does not move, the elastic member 204 is tensioned (relaxed) or compressed (contracted).

Figure 12 schematically shows the damper assembly of Figure 9.

9 and 12, the damper assembly 300 not only controls the moving speed of the internal moving part 200, but also moves the internal moving part 200.

The damper assembly 300 includes a pair of

rotary dampers

301 and 302, a joint link 303, an intermediate link 304 and a support link 305.

The pair of

rotary dampers

301 and 302 includes a first rotary damper 301 and a second rotary damper 302.

A pair of

rotary dampers

301 and 302 are disposed outside the housing 100.

A pair of

rotary dampers

301 and 302 serve as dampers in one direction. Specifically, the pair of

rotary dampers

301 and 302 are gear-shaped dampers capable of rotating clockwise or counterclockwise, and perform the damper role only in one direction (clockwise or counterclockwise).

One of the pair of

rotary dampers

301 and 302 engages with the internal moving part 200 (specifically, the damper contact teeth 202). When the internal moving part 200 moves, the pair of

rotary dampers

301 and 302 serve as dampers and allow the internal moving part 200 to move slowly.

The first rotary damper 301 is a clockwise rotary damper. Specifically, the first rotary damper 301 serves as a damper when rotating clockwise (that is, clockwise rotation is slow due to the generation of torque). On the other hand, the first rotary damper 301 does not function as a damper when rotating counterclockwise (no torque is generated, so rotation in the counterclockwise direction is not slow. Rotation in the counterclockwise direction is relief without torque. (it is a state of relief).

Additionally, the second rotary damper 302 is a counterclockwise rotary damper. Specifically, the second rotary damper 302 serves as a damper when rotating counterclockwise (that is, counterclockwise rotation is slow due to the generation of torque). On the other hand, the second rotary damper 302 does not function as a damper when rotating clockwise (clockwise rotation is not slow because no torque is generated. Clockwise rotation is a relief state without torque) am).

The joint link 303 is disposed on the outside of the housing 100 and connects a pair of

rotary dampers

301 and 302 and the intermediate link 304.

Joint link 303 can rotate clockwise or counterclockwise.

The joint link 303 is a first joint link 3031 connecting a pair of

rotary dampers

301 and 302, and a second joint link 3032 connecting the first joint link 3031 and the intermediate link 304. ) includes. The first joint link 3031 and the second joint link 3032 may be formed as one piece, or may be manufactured separately and joined to each other.

The first joint link 3031 connects the first rotary damper 301 and the second rotary damper 302. A first rotary damper 301 is rotatably connected to one end of the first joint link 3031, and a second rotary damper 302 is rotatably connected to the other end of the first joint link 3031.

The first joint link 3031 shown in FIG. 12 is a simplified illustration, and the shape of the first joint link 3031 is not limited to the shape shown in FIG. 12 and may be formed in various shapes.

The second joint link 3032 is disposed between the first joint link 3031 and the intermediate link 304.

One end of the second joint link 3032 is connected to a portion of the first joint link 3031. Here, a portion of the first joint link 3031 represents a part of the first joint link 3031 that connects one end and the other end of the first joint link 3031.

And, the other end of the second joint link 3031 is rotatably connected to one end of the intermediate link 304. Specifically, the other end of the second joint link 3031 is connected to one end of the intermediate link 304, and can rotate clockwise or counterclockwise with one end of the intermediate link 304 as the central axis of rotation. . This means that the joint link 303 (the first joint link 3031 and the second joint link 3032) can rotate clockwise or counterclockwise with one end of the intermediate link 304 as the central axis of rotation. indicates.

The second joint link 3032 shown in FIG. 12 is shown as a bar shape with a preset length, but is not limited thereto and may be formed in various shapes.

The intermediate link 304 is disposed outside the housing 100.

The intermediate link 304 is disposed between the joint link 303 and the support link 305 and connects the joint link 303 and the support link 305.

One end of the intermediate link 304 is rotatably connected to the other end of the second joint link 3032 constituting the joint link 303, as described above. And, the other end of the intermediate link 304 is connected to one end of the support link 305.

The intermediate link 304 shown in FIG. 12 is shown as a bar shape with a preset length, but is not limited thereto and may be formed in various shapes.

The support link 305 supports the elastic member 204 of the internal moving part 200, a pair of

rotary dampers

301 and 302, the joint link 303, and the intermediate link 304.

The support link 305 is disposed to penetrate the interior of the housing 100. Specifically, the support link 305 is disposed to penetrate the housing 100 in a direction perpendicular to the longitudinal direction of the housing 100.

The support link 305 is disposed through the second slot 107 and the third slot 108 of the housing 100 and can move along the longitudinal direction of the second slot 107 and the third slot 108. there is.

The support link 305 is disposed between the intermediate link 304 and the damper driving unit 400, which will be described later, and connects the intermediate link 304 and the damper driving unit 400.

One end of the support link 305 is connected to the other end of the intermediate link 304. And, the other end of the support link 305 is connected to the connection gear 402 of the damper driving unit 400.

The support link 305 may move along the longitudinal direction of the second slot 107 and the third slot 108 of the housing 100 by driving the damper driving unit 400. As the support link 305 moves, the intermediate link 304, the joint link 303, and the pair of

rotary dampers

301 and 302 connected to the support link 305 also move. That is, when the support link 305 moves, the damper assembly 300 moves.

When the motor 401 of the damper driving unit 400 rotates clockwise (or counterclockwise), the support link 305 moves from the third side wall 103 side of the housing 100 to the fourth side wall 104 side ( (from left to right) moves a preset distance. Alternatively, when the motor 401 of the damper driving unit 400 rotates counterclockwise (or clockwise), the support link 305 moves from the fourth side wall 104 side of the housing 100 to the third side wall 103. Moves to the side (from right to left) by a preset distance.

The support link 305 shown in FIG. 12 is shown as a bar shape with a preset length, but is not limited thereto and may be formed in various shapes.

As described above, the intermediate link 304 and the support link 305 may be manufactured separately and combined with each other, but may be formed integrally to form one component. In an example embodiment in which the intermediate link 304 and the support link 305 are integrally formed, the integrally formed link structure may have one or more bent bent portions.

Meanwhile, the damper driving unit 400 is connected to the damper assembly 300. Specifically, the damper driving unit 400 is connected to the support link 305 of the damper assembly 300 and moves the damper assembly 300.

The damper driving unit 400 is fixed to the housing 100 and/or the door.

Looking at FIG. 9 again, the damper driving unit 400 includes a motor 401, a linear gear 403, and a connecting gear 402.

The motor 401 represents a commonly used motor. In other words, the motor generates rotational force by the force acting between the current flowing in the coil of the rotor and the magnetic field of the stator, and represents a machine that obtains rotational force from electrical energy.

The motor 401 includes wires (not shown) and is driven by electricity.

The motor 401 is fixed to the housing 100 and/or the door.

The linear gear 403 may be connected to the rotation axis of the motor or may be the rotation axis of the motor.

The linear gear 403 is formed in a bar shape with a circular cross-section and a preset length.

The linear gear 403 includes threads formed along the outer peripheral surface.

When the motor drives, the linear gear 403 rotates clockwise or counterclockwise.

The connecting gear 402 connects the linear gear 403 and the damper assembly 300.

Specifically, the connecting gear 402 is movably connected to the linear gear 403, and one side of the connecting gear 402 is connected to the damper assembly 300 (specifically, the support link 305).

The connecting gear 402 includes a through hole. A thread is formed on the inner peripheral surface of the connection gear 402 surrounding the through hole. A linear gear 403 is disposed in the through hole.

When the linear gear 403 rotates clockwise or counterclockwise by driving the motor 401, the connecting gear 402 moves away from the motor 401 (from left to right) or toward the motor 401. It moves a preset distance (from right to left). Accordingly, the damper assembly 300 connected to the connecting gear 42 also moves together with the connecting gear 42.

According to an example of another embodiment of the present invention, the damper driving unit 400 may be composed of a solenoid.

The solenoid is fixed to the housing 100 and/or the door.

The solenoid of the damper driving unit 400 according to an example of another embodiment of the present invention corresponds to the motor 401 of the damper driving unit 400 according to an example of an embodiment of the present invention. And, the movable iron core of the solenoid corresponds to the linear gear 403. Additionally, a connecting member corresponding to the connecting gear 402 is connected to the movable iron core of the solenoid. When the connecting member moves together with the movable iron core, the damper assembly 300 connected to the connecting member also moves together with the connecting member.

Meanwhile, the piston driving unit 50 moves the piston assembly 30.

The body driving unit 500 connects the housing 10 and the fixture.

The body drive unit 500 includes a rotating gear 501 and a connecting link 502.

The rotating gear 501 is disposed inside the housing 100. Specifically, the rotating gear 501 is disposed inside the housing 100 at a position where it engages with the gear teeth 203 formed on the internal moving part 200 (specifically, the body 201).

The rotating gear 501 engages with gear teeth 203 formed on the body 201 of the internal moving part 200 and can rotate.

The rotating gear 501 is a type of pinion gear, and the gear teeth 203 of the internal moving part 200 are a type of rack gear.

When the rotary gear 501 rotates, the internal moving part 200 (specifically, the body 201) moves linearly within the housing 100 along the longitudinal direction of the housing 100. Specifically, when the rotation gear 501 rotates clockwise or counterclockwise, the internal moving part 200 (specifically, the body 201) moves in one direction or the opposite direction of one direction within the housing 100. moves in a straight line. That is, by the rotation of the rotary gear 501, the internal moving part 200 (specifically, the body 201) moves linearly in one direction or in a direction opposite to one direction within the housing 100. In addition, on the contrary, when the internal moving part 200 (specifically, the body 201) moves linearly in one direction or the opposite direction within the housing 100, the rotating gear 501 rotates clockwise or It rotates counterclockwise.

The connecting link 502 is connected to the rotating gear 501.

Depending on the trajectory in which the connecting link 502 moves, the rotating gear 501 rotates clockwise or counterclockwise. Also, on the contrary, when the rotation gear 501 rotates clockwise or counterclockwise, the connecting link 502 moves along a constant trajectory.

One end of the connecting link 502 is connected to the rotating gear 501, and the other end of the connecting link 502 is connected to the fixture. The fixture refers to a wall or door frame on which a door is installed.

One end of the connecting link 502 is connected to the rotating gear 501 and rotates the rotating gear 501.

One end of the connecting link 502 may be connected to the rotating gear 501 by a bolt or screw fastening method. The fastening method of one end of the connecting link 502 and the rotating gear 501 is all fastening methods in which one end of the connecting link 502 rotates the rotating gear 501 when the connecting link 502 moves. Includes.

The other end of the connection link 502 is rotatably connected to the fixture. For example, the connection link 502 may be connected to the fixture through a hinge coupling.

There may be a plurality of connection links 502.

For example, the connecting link 502 includes a first connecting link and a second connecting link. In an example of this embodiment, one end of the first connecting link is rotatably connected to the rotation gear 501, the other end of the first connecting link is rotatably connected to one end of the second connecting link, and the second connecting link is rotatably connected to one end of the second connecting link. The other end of the connection link is rotatably connected to the fixture.

By the body driving unit 500, the internal moving unit 200 is interlocked with the door. That is, as the door is opened or closed, the internal moving part 200 moves in one direction or the opposite direction in the internal space of the housing 100.

Specifically, when the door is opened or closed, the housing 100 installed on the door moves together with the door. At this time, the connecting link 502 rotatably connected to the rotating gear 501 disposed in the housing 100 also moves. As the connection link 502 moves, the rotation gear 501 rotates clockwise or counterclockwise. As the rotation gear 501 rotates, the internal moving part 200 moves linearly in one direction or in the opposite direction within the housing 100. Also, on the contrary, when the internal moving part 200 moves in one direction or the opposite direction in the internal space of the housing 100, the door is opened or closed.

On the other hand, the automatic door opening and closing device according to the example of the second embodiment of the present invention can automatically open the door and automatically close the opened door. Here, automatic indicates that the door is opened or closed by the operation of the automatic door opening and closing device of the present invention even if the user does not open or close the door.

The automatic door opening and closing device according to the example of the second embodiment of the present invention includes a control unit.

The control unit controls the damper driving unit 400.

Specifically, when a door open signal or a door close signal is input, the control unit controls the damper driver 400 to operate the damper driver 400.

When a door open signal or a door close signal is input, the control unit turns on or off the electricity supplied to the motor 401 or solenoid of the damper driving unit 400 to operate the motor 401 or solenoid. It may stop working.

The operating principle of the automatic door opening and closing device according to the example of the second embodiment of the present invention is as follows.

The automatic door opening and closing device according to the example of the second embodiment of the present invention is mounted on the door and the fixture.

The automatic door opening and closing device of the present invention includes a housing 100, an internal moving part 200 disposed inside the housing 10, and a damper disposed outside the housing 100 and connected to the internal moving part 200. It is provided with an assembly 300, a body driving part 500, and a damper driving part 400 that moves the damper assembly 300.

The housing 100 may be placed (mounted) on a door, for example, and the connection link 502 of the body drive unit 500 may be connected (fastened) to a fixture.

First, the process by which the automatic door opening and closing device of the present invention automatically opens a closed door will be described.

Referring to Figure 13, the door is closed and the elastic member 204 is in a normal state. Here, the normal state of the elastic member 204 refers to a state in which the elastic member 204 is not stretched or compressed.

In a state in which the door is closed (shown in FIG. 13), the first rotary damper 301 or the second rotary damper 302 of the damper assembly 300 is connected to the damper contact teeth 202 of the internal moving part 200. They are interlocked.

13 and 14, when a door open signal is input to the control unit in a closed state (state shown in FIG. 13), the control unit operates the damper driving unit 400 (e.g., motor 401). . By the operation of the damper driving unit 400, the support link 305 of the damper assembly 300 moves in one direction. Here, one direction represents a direction from the third side wall 103 side of the housing 100 to the fourth side wall 104 side.

Specifically, when the motor 401 of the damper driving unit 400 rotates clockwise (or counterclockwise), the support link 305 of the damper assembly 300 is positioned on the third side wall 103 side of the housing 100. It moves toward the fourth side wall 104 (from left to right) by a preset distance. At this time, since the internal moving part 200 is in a state where it is not moving in one direction (the door is still closed), there is a gap between the body 201 of the internal moving part 200 and the support link 305 of the damper assembly 300. The elastic member 204 disposed in is tensioned as the support link 305 moves in one direction. That is, the door is in a closed state, and the elastic member 204 is in a tensioned state.

Additionally, when the support link 305 of the damper assembly 300 moves in one direction by the operation of the damper driving unit 400, the intermediate link 304 connected to the support link 305 also moves in one direction. As the middle link 304 moves, it pulls the joint link 303 connected to the middle link 304 in one direction, and the joint link rotates clockwise. Accordingly, the second rotary damper 302 of the damper assembly 300 is engaged with the damper contact teeth 202 of the internal moving part 200. The second rotary damper 302 is a counterclockwise rotary damper.

14 and 15, when the elastic member 204 is stretched while the door is closed (state shown in FIG. 14), the elastic member 204 generates a restoring force, and the restoring force of the elastic member 204 The internal moving part 200 moves in one direction along the linear guide 105. Here, one direction represents a direction from the third side wall 103 side of the housing 100 to the fourth side wall 104 side.

As the internal moving part 200 moves in one direction, the second rotary damper 302 of the damper assembly 300 engaged with the damper contact teeth 202 of the internal moving part 200 rotates counterclockwise. Accordingly, the internal moving part 200 moves slowly (at a slow speed) in one direction.

Additionally, as the internal moving part 200 moves in one direction, the rotation gear 501 of the body driving part 500 engaged with the gear teeth 203 of the internal moving part 200 rotates. Accordingly, the connecting link 502 rotatably connected to the rotating gear 501 moves, and the door connected to the connecting link 502 also moves (opens). Since the internal moving part 200 moves slowly, the door also opens slowly.

As shown in Figure 15, the door is open, and the elastic member 204 is returned to its original shape and is in a normal state.

Meanwhile, when the door is open (state shown in FIG. 15), the user can close the door.

When the user applies force to close the open door, the body driving part 500 operates (that is, the connecting link 502 moves and the rotation gear 501 rotates), and the internal moving part 200 moves in one direction. You can move in the opposite direction. Here, the direction opposite to one direction represents a direction from the fourth side wall 104 side of the housing 100 to the third side wall 103 side.

When a user applies force to close an open door, the second rotary damper 302 of the damper assembly 300 engaged with the damper contact teeth 202 of the internal moving part 200 rotates clockwise. Since the second rotary damper 302 is a counterclockwise rotary damper, it can rotate clockwise in a relief state without torque. Accordingly, the internal moving part 200 can move in one direction opposite to the other, the elastic member 204 is tensioned, and the door is closed.

15 and 16, when a door closing signal is input to the control unit in an open state (state shown in FIG. 15), the control unit operates the damper driving unit 400 (e.g., motor 401). . By the operation of the damper driving unit 400, the support link 305 of the damper assembly 300 moves in one direction opposite to the other. Here, the direction opposite to one direction indicates a direction from the fourth side wall 104 side of the housing 100 to the third side wall 103 side.

Specifically, when the motor 401 of the damper driving unit 400 rotates clockwise (or counterclockwise), the support link 305 of the damper assembly 300 is positioned on the fourth side wall 104 side of the housing 100. It moves toward the third side wall 103 (from right to left) by a preset distance. At this time, since the internal moving part 200 is in a state where it is not moving in the opposite direction (the door is still open), the support link ( The elastic member 204 disposed between 305 is compressed as the support link 305 moves in one direction opposite to the other. That is, the door is in an open state, and the elastic member 204 is in a compressed state.

In addition, when the support link 305 of the damper assembly 300 moves in a direction opposite to one direction by the operation of the damper drive unit 400, the intermediate link 304 connected to the support link 305 also moves in the opposite direction to one direction. moves to . As the middle link 304 moves, it pushes the joint link 303 connected to the middle link 304 in one direction opposite to the other, and the joint link rotates counterclockwise. Accordingly, the first rotary damper 301 of the damper assembly 300 is engaged with the damper contact teeth 202 of the internal moving part 200. The first rotary damper 302 is a clockwise rotary damper.

Looking at FIG. 13 again, FIG. 13 shows a state in which the internal moving part moves and the door is closed. That is, Figure 13 is a cross-sectional view schematically showing the automatic door opening and closing device of the present invention in a closed state.

13 and 16, when the elastic member 204 is compressed while the door is open (state shown in FIG. 16), the elastic member 204 generates a restoring force, and the restoring force of the elastic member 204 As a result, the internal moving part 200 moves in the opposite direction of one direction along the linear guide 105. Here, the direction opposite to one direction represents a direction from the fourth side wall 104 side of the housing 100 to the third side wall 103 side.

As the internal moving part 200 moves in the opposite direction, the first rotary damper 301 of the damper assembly 300 engaged with the damper contact teeth 202 of the internal moving part 200 rotates clockwise. do. Accordingly, the internal moving part 200 moves slowly (at a slow speed) in the opposite direction of one direction.

Additionally, as the internal moving unit 200 moves in the opposite direction, the rotation gear 501 of the body driving unit 500 engaged with the gear teeth 203 of the internal moving unit 200 rotates. Accordingly, the connecting link 502 rotatably connected to the rotating gear 501 moves, and the door connected to the connecting link 502 also moves (closes). Since the internal moving part 200 moves slowly, the door also closes slowly.

As shown in FIG. 13, the door is closed, and the elastic member 204 returns to its original shape and is in a normal state.

Meanwhile, when the door is closed (state shown in FIG. 13), the user can open the door.

When a user applies force to open a closed door, the body driving part 500 operates (i.e., the connecting link 502 moves and the rotation gear 501 rotates), and the internal moving part 200 moves in one direction. You can move to . Here, one direction represents a direction from the third side wall 103 side of the housing 100 to the fourth side wall 104 side.

When a user applies force to open a closed door, the first rotary damper 301 of the damper assembly 300 engaged with the damper contact teeth 202 of the internal moving part 200 rotates counterclockwise. Since the first rotary damper 301 is a clockwise rotary damper, it can rotate counterclockwise in a relief state without torque. Accordingly, the internal moving part 200 can move in one direction, the elastic member 204 is compressed, and the door is opened.

As described above, the automatic door opening and closing device according to examples of embodiments of the present invention can automatically open a closed door or automatically close an open door. Here, automatic indicates that the door is opened or closed by the operation of the automatic door opening and closing device of the present invention even if the user does not open or close the door. This door opening and closing device of the present invention can be manufactured using (improved on) a conventional door closer.

The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by a person with ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

In addition, although the above description focuses on the embodiment, this is only an example and does not limit the present invention, and those skilled in the art will be able to understand the above without departing from the essential characteristics of the present embodiment. You will see that various modifications and applications not illustrated are possible. In other words, each component specifically shown in the implementation state can be modified and implemented. And these variations and differences in application should be construed as being included in the scope of the present invention as defined in the appended claims.

[Explanation of symbols]

10, 100: housing

20: internal support

30: Piston assembly

40: Internal support driving part

50: Piston driving unit

200: internal moving part

300: Damper assembly

400: Damper driving unit

500: Body driving part

Claims

A housing connected to the door and containing a fluid therein;

an internal support portion disposed inside the housing and movable;

a piston assembly disposed inside the housing, connected to the internal support, and movable;

an internal support drive unit connected to the internal support unit and moving the internal support unit; and

An automatic door opening and closing device comprising a fixture and a piston drive unit connected to the piston assembly and moving the piston assembly.
According to paragraph 1,

The housing includes a first side wall, a second side wall facing the first side wall, a third side wall connecting one side of the first side wall and the second side wall, and a third side wall connecting the other side of the first side wall and the second side wall. And includes a fourth side wall facing the third side wall,

The housing includes a first relief tube connected to the first side wall and disposed adjacent to the third side wall, a second relief pipe connected to the first side wall and disposed adjacent to the fourth side wall, and a second relief tube connected to the first side wall and disposed adjacent to the fourth side wall. a first hydraulic pipe connected to and disposed adjacent to the third side wall, and a second hydraulic pipe connected to the second side wall and disposed adjacent to the fourth side wall,

The first relief pipe, the second relief pipe, the first hydraulic pipe, and the second hydraulic pipe communicate with the interior of the housing,

An automatic door opening and closing device in which hydraulic valves that regulate hydraulic pressure of the hydraulic pipes are disposed in the first hydraulic pipe and the second hydraulic pipe.
According to paragraph 1,

The internal support unit includes a first internal support unit connected to the internal support driving unit, a second internal support unit facing the first internal support unit and connected to the piston assembly, and connecting the first internal support unit and the second internal support unit. Includes a connecting support,

The connection support unit includes a first hole formed through a position adjacent to the first internal support part and a second hole formed through a position adjacent to the second internal support part.
According to paragraph 1,

The piston assembly includes a first piston, a second piston disposed at a preset distance from the first piston, an upper connection portion connecting one side of the first piston and one side of the second piston, and the other side of the first piston. and a lower connection part connecting the other side of the second piston, and an elastic member disposed between the second piston and the internal support part and connected to the second piston and the internal support part,

The first piston includes a first check valve disposed through the first piston in the thickness direction of the first piston,

The second piston includes a second check valve disposed through the second piston in the thickness direction of the second piston.
According to paragraph 4,

The lower connection portion includes gear teeth,

The gear teeth are engaged with the rotating gear of the piston drive unit, an automatic door opening and closing device.
According to paragraph 4,

The housing includes a first side wall, a second side wall facing the first side wall, a third side wall connecting one side of the first side wall and the second side wall, and a third side wall connecting the other side of the first side wall and the second side wall. And includes a fourth side wall facing the third side wall,

The internal space of the housing includes a first chamber, which is a space between the third side wall and the first piston, an intermediate chamber, which is a space between the first piston and the second piston, and the second piston and the fourth side wall. An automatic door opening and closing device divided into a second chamber, which is the space between.
According to paragraph 4,

The internal support unit includes a first internal support unit connected to the internal support driving unit, a second internal support unit facing the first internal support unit and connected to the piston assembly, and connecting the first internal support unit and the second internal support unit. Includes a connecting support,

The elastic member is disposed between the second piston and the second internal support, and is connected to the second piston and the second internal support.
According to paragraph 1,

The internal support drive unit includes a motor fixed to the housing or the door, a linear gear connected to the rotation axis of the motor, and a connection gear that connects the linear gear and the internal support unit and moves by driving the motor. , door automatic opening and closing device.
According to paragraph 1,

The piston driving unit is disposed inside the housing and includes a rotating gear engaged with gear teeth formed on the piston assembly, and a connecting link whose one end is connected to the rotating gear and the other end is connected to the fixture. Automatic opening and closing device.
According to paragraph 1,

Further comprising a control unit that controls the internal support driving unit,

The automatic door opening and closing device wherein the control unit controls the internal support drive unit to operate when a door open signal or a door close signal is input.
a housing connected to the door;

an internal moving part disposed inside the housing and capable of moving;

A damper assembly connected to the internal moving part and controlling the speed of the internal moving part;

A damper driving unit connected to the damper assembly; and

An automatic door opening and closing device that is connected to a fixture and the internal moving part and includes a body driving part that moves the internal moving part.
According to clause 11,

The housing includes a first side wall, a second side wall facing the first side wall, a third side wall connecting one side of the first side wall and the second side wall, and a third side wall connecting the other side of the first side wall and the second side wall. And includes a fourth side wall facing the third side wall,

The housing includes a first slot formed in the first side wall and disposed adjacent to the third side wall, a second slot formed in the first side wall and disposed adjacent to the fourth side wall, and a second slot formed in the second side wall, A third slot disposed at a position facing the second slot, and a linear guide whose one end and the other end are respectively connected to the inner surface of the third side wall and the inner surface of the fourth side wall,

An automatic door opening and closing device wherein the internal moving part moves along the linear guide.
According to clause 11,

The internal moving part includes a body capable of moving along a linear guide disposed in the inner space of the housing, damper contact teeth formed at a preset length on one side of the body, and formed at a preset length on another side of the body. An automatic door opening and closing device comprising gear teeth and an elastic member disposed between the body and the damper assembly.
According to clause 11,

The damper assembly includes a pair of rotary dampers disposed outside the housing and engaged with the internal moving part, a joint link connected to the pair of rotary dampers and capable of rotation, and an intermediate link connected to the joint link. , an automatic door opening and closing device disposed to penetrate the interior of the housing and including a support link connected to the intermediate link.
According to clause 14,

The pair of rotary dampers includes a first rotary damper and a second rotary damper,

The first rotary damper is a clockwise rotary damper, and the second rotary damper is a counterclockwise rotary damper.
According to clause 14,

The internal moving part includes a body capable of moving along a linear guide disposed in the inner space of the housing, damper contact teeth formed at a preset length on one side of the body, and formed at a preset length on another side of the body. It includes gear teeth and an elastic member disposed between the body and the damper assembly,

The damper contact teeth engage with the pair of rotary dampers,

The elastic member is disposed between the body and the support link, and is connected to the body and the support link.
According to clause 11,

The damper driving unit includes a motor fixed to the housing or the door, a linear gear connected to the rotation axis of the motor, and a connection gear that connects the linear gear and the damper assembly and moves by driving the motor. Automatic door opening and closing device.
According to clause 11,

The body driving unit includes a rotating gear disposed inside the housing and engaged with gear teeth formed on the internal moving part, and a connecting link whose one end is connected to the rotating gear and the other end is connected to the fixture, Automatic door opening and closing device.
According to clause 11,

Further comprising a control unit that controls the damper driving unit,

The automatic door opening and closing device wherein the control unit controls the damper driving unit to operate when a door open signal or a door close signal is input.