WO2023042984A1

WO2023042984A1 - Door hinge

Info

Publication number: WO2023042984A1
Application number: PCT/KR2022/004875
Authority: WO
Inventors: 이준영; 김상백; 김경록
Original assignee: 서원코리아 주식회사
Priority date: 2021-09-14
Filing date: 2022-04-05
Publication date: 2023-03-23
Also published as: KR102673068B1; KR20230039888A

Abstract

The present invention relates to a door hinge comprising: an arm installed in a body of a device provided with a door; a housing installed in the door and connected to the arm through a hinge shaft to rotate; a link connected to the arm through a link shaft inside the housing to linearly move; a main spring member including a spring lever and a main spring fitted into the spring lever; and a damper provided inside the link and moving along the outer periphery of the arm, wherein when the door is open, compression of the damper starts, and when the door is closed, compression of the damper starts as soon as the other side of the damper comes into contact with the outside of the arm, so that the door is slowly opened or closed.

Description

door hinge

The present invention relates to a door hinge, and more particularly, to a door hinge capable of being gradually opened or closed by a damper when a door is opened or closed.

In general, doors used in various electronic products such as cupboard doors of kitchen furniture, kimchi refrigerators, washing machines, and folding mobile phones mainly use bottom-up hinged doors that open and close upward and downward while rotating around a hinge axis.

The hinge device used in such a bottom-up opening and closing door rotates while being mounted on the end of the door to close the door.

Meanwhile, a compression spring is installed in the door hinge, and the compression spring generates a compression force in a starting section in which the door closes, thereby slowing down the rotation speed of the shaft so that the door rotates slowly.

However, the compressive force of the compression spring has a limit, and therefore, when the door is configured to support the load of the door with only one compression spring, as in the prior art, when the door continues to close, when it enters the progress section, it is more than enough to support the load of the door at this time. There is a disadvantage in that the rotational speed of the shaft cannot be effectively slowed down because a large compressive force cannot be generated.

Through these disadvantages, when entering the progress section for closing the door, the door closes at a rapid speed and hits the device, resulting in various safety accidents and the shock transmitted to the device, which damages various electronic parts and shortens the lifespan of the device. will bring about the result of

The present invention has been made to solve the above problems, and an object of the present invention is to provide a door hinge that facilitates opening and closing of a door and allows the door to open and close slowly.

Another object of the present invention is to provide a door hinge capable of slowly opening and closing a door using only a damper.

Another object of the present invention is to provide a door hinge that prevents the door from being opened due to high heat from inside the main body.

Along with this, other objects and advantages of the present invention will be described below, which will be further explained by means and combinations within the scope easily deduced from them, as well as the details described in the claims of the present invention and the disclosure of the embodiments thereof. It is added that it will be embraced in a wide range.

A door hinge of the present invention for achieving the above object includes an arm installed in a body of a mechanism provided with a door; a housing installed on the door, connected to the arm by a hinge shaft, rotated, and including a first opening provided on one side and a second opening provided on the other side; a link provided inside the housing connected to the first opening by a pin, connected to the arm by a link shaft, moved linearly, and including a third opening connected to the second opening by a pin; a main spring member including a spring lever and a main spring inserted into the spring lever, and connected to the link by a pin; and a damper provided inside the link, one side of which is supported by the support of the link, and the other side of which is connected to the second and third openings with a pin and moves along the outer periphery of the arm. When the door is opened, compression of the damper starts as the pin connected to the damper is caught on the end of the second opening, and when the door is closed, compression of the damper starts when the other side of the damper touches the outer edge of the arm. It is characterized in that the door is opened or closed slowly.

And according to a preferred embodiment of the present invention, the damper is provided between a body, a head driven by a piston on one side of the body and supported by a support part of the link, a pair of brackets provided on the other side of the body, and between the brackets It characterized in that it comprises a roller that moves along the outer periphery of the arm.

In addition, according to a preferred embodiment of the present invention, the arm may include a depression formed on the outside of the damper in contact with the roller, a first curved portion and a second curved portion extending from the depression, and the first and second curved portions extending from the depression. It is characterized in that a cam profile consisting of a flat portion connecting between the second curved portions is formed.

And according to a preferred embodiment of the present invention, it is provided inside the housing, is connected to the fourth opening provided adjacent to the second opening of the housing with a pin and moves linearly, one side of which is connected to the sub-support inside the housing. The sub spring member includes a rod, a sub spring inserted in the rod, and a sub roller provided on the other side of the rod, and when the door is closed, the sub spring member includes the sub spring member in the recessed part when the door is closed. Characterized in that the roller is fitted.

As described above, according to the present invention, the following effects can be expected.

First, by facilitating the opening and closing of the door and allowing the door to open and close slowly, the door can be stably opened and closed.

In addition, since the door can be opened and closed gradually only with the damper, the configuration is simplified, thereby simplifying the manufacturing process and significantly reducing the occurrence of problems such as breakdowns.

In addition, the problem of opening the door due to high heat from the inside of the main body can be solved. That is, the sub-spring part provided in the hinge is inserted into the recessed part of the arm, so that the door can be opened only when the user exerts force.

Along with this, other effects of the present invention are not only the matters described in the above-described embodiments and the claims of the present invention, but also the possibility of potential advantages contributing to the effects and industrial development that can occur within the range that can be easily deduced from them. It is added that it will be embraced in a wider range by

1 is a perspective view showing a door hinge according to the present invention.

2 is an exploded perspective view showing a door hinge according to the present invention.

3A to 3D are cross-sectional views showing the state of the door hinge according to the present invention when the door is opened.

4A to 4C are cross-sectional views showing the state of the door hinge according to the present invention when the door is closed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to the description, the advantages and features of the present invention and how to achieve them will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. In addition, the terms used in this specification are intended to describe embodiments and are not intended to limit the present invention, and the singular form of these terms also includes the plural form unless specifically stated in the text.

In addition, in the present invention, one end and one side refer to the upper part with respect to the drawing in each configuration, and the other end and the other side refer to the lower part of the galaxy.

Hereinafter, a door hinge according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view showing a door hinge according to the present invention, and FIG. 2 is an exploded perspective view showing a door hinge according to the present invention.

1 and 2, a door hinge 100 according to the present invention includes an arm 10, a housing 20, a link 30, and a main spring ass'y; 40), and a damper (50).

First, the arm 10 is installed in the main body of the mechanism provided with a door, and one side is fixedly coupled to the main body in an “a” shape, and the other side is connected to the housing 20 to be described below.

The arm 10 has a cam profile formed at a portion in contact with the roller 55 of the damper 50 to be described below. As shown in detail in FIG. 2, the cam profile includes a depression 15, a first It is composed of one curved portion 11, a flat portion 13, and a second curved portion 12.

That is, the recessed portion 15 has a shape recessed in a curve so that the sub-spring member 60 to be described below is inserted therein, and extends from the recessed portion 15 to form the first curved portion 11 and the second curved portion 12. formed, and a flat portion 13 is connected between the first and second

curved portions

11 and 12 . Here, the first and second

curved portions

11 and 12 have curved protruding shapes, and the flat portion 13 connects them.

The outer periphery of the arm 10 having such a cam profile is in contact with the damper 50 and the sub spring member 60, which will be described in detail in the description of the operation of the door hinge 100 according to the present embodiment. Explain.

Next, the housing 20 is installed on the door, and is connected to the arm 10 and the hinge shaft 25 and rotates. The housing 20 has a first opening 21 connected to the link 30 described below, a second opening 22 connected to the damper 50, and a fourth opening 24 connected to the sub spring member 60. ) is provided, and a sub support part 29 is provided inside so as to come into contact with one side of the sub spring member 60.

More specifically, the first opening 21 is provided on one side of the housing 20, so that the linear movement of the link 30 is possible, that is, the pin 71 connected to the link 30 is linearly moved. It is provided in the form of a long circular shape in the longitudinal direction of the housing 20.

And the second opening 22 is provided on the other side of the housing 20, in order to induce the operation of the damper 50, that is, the damper 50 is flexibly moved by the link 30 that is linearly moved by the rotation of the door In order to operate, it is provided in a long circular shape in the longitudinal direction of the housing 20 by extending from an inclined shape or inclined shape at a predetermined angle.

In addition, the fourth opening 24 is provided adjacent to the second opening 22 on the other side of the housing 20, and is connected to the sub spring member 60 so that the sub spring member 60 can move in a straight line. The pin 73 is provided in a long circular shape in the longitudinal direction of the housing 20 so as to linearly move.

Further, the sub support part 29 is provided inside the housing 20, and is connected to the fourth opening 24 so as to be supported by the sub support part 29, so that the sub spring member 60 may be provided. That is, one side of the sub-spring member 60 is supported by the sub-support 29 and the other side of the sub-spring member 60 is connected to the fourth opening 24 through the pin 73.

Next, the link 30 is provided inside the housing 20, and when the housing 20 rotates, it is connected to the arm 10 and the link shaft 35 and moves linearly. One side of the link 30 is connected to the first opening 21 of the housing 20 by a pin 71, so that it can be linearly moved along the first opening 21.

And the link 30 is provided with a third opening 33 on the other side, the third opening 33 is connected to the second opening 21 of the housing 20 with a pin 72, where the second opening 33 And the

third openings

22 and 33 are connected to the bracket 57 of the damper 50 and a pin 72 to be described below.

In addition, the link 30 is provided with a support portion 39 on one side from the inside, and a damper 50 to be supported on this support portion 39 is provided inside the link 30. That is, the head 53 provided on one side of the damper 50 comes into contact with the support 39, and the other side of the damper 50 is connected to the third opening 33 of the link 30 and the second opening 33 of the housing 20. A pin 72 connects to the opening 22 .

Next, the main spring member 40 has one end provided to protrude from the housing 20, the other end provided inside the housing 20, and connected to the link 30 and the pin 74 inside the housing 20. do. The main spring member 40 is provided to stably open and close the door.

And the main spring member 40 is composed of a spring lever 41 and a main spring 43 inserted into the spring lever 41, and is connected to the link 30 with a pin 74 at the other end of the spring lever 41, It moves linearly with the link 30.

In addition, in the state where the main spring 43 is inserted into the outer diameter of the spring lever 41, one end is in contact with the locking jaw provided at one end of the spring lever 41, and the other end is in contact with one end of the housing 20, the spring A compressive force is exerted according to the linear movement of the lever 41, for example, a movement to the other end, and the opening or closing of the door is elastically supported through the compressive force of the main spring 43.

Next, the damper 50 is provided inside the link 30, one side of the damper 50 is provided so as to contact the support portion 39 inside the link 30, and the other side has second and third openings ( 22, 33) and pin 72.

That is, the damper 50 has a body 51 and a head 53 supported by the support part 39 of the link 30 while the piston moves on one side of the body 51, and a pair of brackets provided on the other side of the body 51 57, and a roller 55 provided between the brackets 57 and moving along a cam profile formed on the outside of the arm 10, for example, on the outside of the arm 10. Here, the roller 55 provided on the other side of the damper 50 is provided on the first curved portion 11 of the arm 10 when the door is closed, and when the door is opened or the operation is in progress, the roller 55 (13) and is gradually moved along the second curved portion (12).

In the damper 50, when the door is opened, the pin 72 connected to the damper 50 is caught on the end of the second opening 22, that is, the other end, and compression starts, and when the door is closed, the roller of the damper 50 Compression starts when 55 touches the outer edge of arm 10, and the door is opened or closed gradually.

In the damper 50 according to the present embodiment, the body 51 is filled with fluid, and when the door is opened or closed, the damper 50 is linearly moved by the linear movement of the link 30, so that the damper 50 While the head 53 is supported on the support part 39 while the other side of the second opening 22 is caught on the end, the resistive force caused by the fluid filled in the body 51 acts, and as a result, the door is gradually damped. will open or close

Next, the sub-spring member 60 is provided inside the housing 20, is connected to the fourth opening 24 of the housing 20 by a pin 73 and moves linearly, one side of which is inside the housing 20. It is supported by the sub-support 29 of the

The sub spring member 60 includes a rod 61, a sub spring 63 inserted into the rod 61, and a sub roller 65 provided on the other side of the rod 61. Here, the sub spring 63, in a state inserted into the rod 61, has one end in contact with the sub support 29 and the other end in contact with the bracket provided with the sub roller 65, and compressive force according to the opening and closing of the door. This is exerted so that the sub roller 65 is inserted into or separated from the recessed portion 15, thereby elastically supporting the operation of the door.

In addition, a pair of brackets are provided on the other side of the rod 61, and a sub roller 65 is rotatably provided between the brackets, so that the sub roller 65 has a cam profile formed on the outside of the arm 10, that is, a depression. It can be easily moved along the portion 15 and the first curved portion 11 .

Due to this, when the door is closed, the sub roller 65 is inserted into the recessed portion 15 of the arm 10 to support the door from being opened due to high heat from the inside of the main body. Also, when trying to open the door, the user has to apply force to open the door in order to separate the sub spring member 60 inserted into the depression 15.

Based on the foregoing description, the operation process of the door hinge according to the present invention will be described. 3A to 3D are cross-sectional views showing the state of the door hinge according to the present invention when the door is opened, and FIGS. 4A to 4C are cross-sectional views showing the state of the door hinge according to the present invention when the door is closed.

First, a door opening operation will be described with reference to FIGS. 3A to 3D .

As shown in FIG. 3A, when the door is in a closed state, as indicated by A, the sub spring member 60 is inserted into the recessed portion 15 of the arm 10, and is heated from the inside of the main body. This helps keep the door from opening. Here, the sub-spring member 60 is in a state in which the sub-spring 63 is not compressed, and a pin 73 is provided at the other end of the fourth opening 24 of the housing 20 .

In addition, the housing 20 maintains 0 ° from the main body around the hinge axis 25, and the link 30 also maintains 0 ° from the main body around the link axis 35. At this time, the sub spring The member 60 is fitted into the recessed portion 15, and the damper 50 has a roller 55 provided on the side of the first curved portion 11 of the arm 10, so that the first opening of the housing 20 ( 21) and the link 30 connected by the pin 71 are moved to one side as much as possible inside the housing 20, and as a result, the pin 71 is caught on one end of the first opening 21, and the main The main spring 43 of the spring member 40 is in a compressed state.

Subsequently, when the door is opened, as shown in FIG. 3B, the sub-spring member 60 is separated from the recessed portion 15 by the user's force, and the pin 73 connected to the housing 20 opens the fourth opening ( 24), the housing 20 is rotated as shown by the arrow by the hinge shaft 25, the head 53 of the damper 50 is supported by the support 39, and the link shaft 35 The link 30 is linearly moved in the other direction as shown by the thick arrow, and the pin 71 is linearly moved in the first opening 21 as shown in B, and the roller 55 of the damper 50 is of the arm 10 As shown in A by moving along the cam profile, the pin 72 connected to the housing 20 is caught on the other end of the second opening 22. At this time, the opening angle of the door becomes about 20 to 30°, and compression of the damper 50 starts.

Next, as shown in FIG. 3C, when the door is further rotated, the housing 20 is further rotated by the hinge shaft 25 as shown by the arrow, and the link 30 moves linearly in the other direction as indicated by the thick arrow do. At this time, as in A, the link 30 is moved while the pin 72 is caught on the other end of the second opening 22, and the pin 71 is moved along the first opening 21 as in B, , Due to this, the support part 39 inside the link 30 presses the head 53 of the damper 50 so that the head 53 moves with a piston. At this time, the opening angle of the door is about 55 to 65°, and the damper 50 is compressed, for example, by about 6 to 7 mm.

Subsequently, as shown in FIG. 3D, when the door is completely opened, the housing 20 is completely rotated as shown by the arrow by the hinge shaft 25, and the link 30 is thick by the link shaft 35. As shown by the arrow, it is completely moved in the other direction. At this time, in the state where the pin 72 is caught on the other end of the second opening 22 as in A, the support part 39 inside the link 30 continues to support the head 53 of the damper 50 as in B As a result, the head 53 moves as a piston and is compressed to the maximum. At this time, the opening angle of the door is about 80 to 90°, and the damper 50 is compressed, for example, by about 10 to 12 mm.

As shown in FIG. 3B in the process of opening the door, the pin 72 connected to the housing 20 is caught on the other end of the second opening 22, and the straight line of the link 30 according to the rotation of the housing 20 As the head 53 of the damper 50 is supported by the support part 39 by movement, the compressive force of the damper 50 starts, and the door is gradually opened from this point.

Next, the closing operation of the door will be described with reference to FIGS. 4A to 4C. When trying to close the door, as shown in FIG. 3D, in the open state of the door, the user grabs the door and applies force to close the door, and by the rotation of the door, as shown in FIG. 4A, along the hinge axis 25 The housing 20 rotates as shown by the arrow.

At this time, by the rotation of the housing 20, the link 30 is linearly moved in one direction as shown by a thick arrow, so that the main spring member 40 connected to the link 30 and the pin 74 is also linearly moved in one direction. As shown in C, the support 39 supporting the head 53 of the damper 50 also moves linearly in one direction, so that the compressive force applied to the damper 50 is released.

Subsequently, as shown in FIG. 4B, when the door is further rotated, the housing 20 is further rotated by the hinge shaft 25 as indicated by an arrow, and the link 30 is linearly moved in one direction as indicated by a thick arrow. . At this time, due to the movement of the link 30, the pin 71 provided in the first opening 21 is moved in one direction as shown in C, and the damper 50 is rotated by the rotation of the housing 20, As shown in D, it comes into contact with the outside of the arm 10, and the roller 55 of the damper 50 moves along the cam profile and comes into contact with the second curved portion 12, and compression of the damper 50 starts. At this time, the closing angle of the door becomes about 20 to 30°, and compression of the damper 50 starts, and the damper 50 is compressed by, for example, 3 to 4 mm.

That is, when the link 30 is linearly moved in one direction by the continued closing operation of the door, the roller 55 of the damper 50 moves in a state where the head 53 of the damper 50 is supported by the support part 39 Since is moved in contact with the outer surface of the arm 10, the head 53 of the damper 50 is moved by a piston, so that compression of the damper 50 eventually starts.

Next, as shown in FIG. 4C, when the door is completely closed, the sub-spring member 60 is moved along the outer edge of the arm 10 by the rotation of the housing 20, and as shown in D, the depression ( 15), which supports the door from opening due to high heat from the inside of the main body.

And, as the housing 20 is fully rotated and closed, the link 30 is also moved in a straight line as much as possible, so that the pin 71 is provided at one end of the first opening 21, and the damper 50 is the head 53 While being supported by the support part 39, the roller 55 passes the second curved part 12 and is caught on the flat part 13, and the damper 50 is compressed to the maximum. At this time, the door becomes 0° from the main body, and the damper 50 is compressed in one direction, for example, by 7 to 8 mm.

In the process of closing the door, as shown in FIG. 4B, the rotation of the housing 20 causes the roller 55 of the damper 50 to come into contact with the outside of the arm 10 and move, and the head of the damper 50 ( 53) is supported by the support part 39, so the compressive force of the damper 50 starts, and the door is gradually closed from this point.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be. And as described above, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is limited by these embodiments and the accompanying drawings. it is not going to be The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Claims

Arm (arm) installed on the body of the mechanism provided with the door;

a housing installed on the door, connected to the arm by a hinge shaft, rotated, and including a first opening provided on one side and a second opening provided on the other side;

a link provided inside the housing connected to the first opening by a pin, connected to the arm by a link shaft, moved linearly, and including a third opening connected to the second opening by a pin;

a main spring member including a spring lever and a main spring inserted into the spring lever, and connected to the link by a pin; and

A damper provided inside the link, one side of which is supported by the support of the link, and the other side of which is connected to the second and third openings with pins to move along the periphery of the arm; includes,

When the door is opened, compression of the damper starts while a pin connected to the damper is caught on an end of the second opening,

When the door is closed, when the other side of the damper touches the outer edge of the arm, compression of the damper is started so that the door is gradually opened or closed.
The method of claim 1, wherein the damper,

body,

A head supported by a piston movement on one side of the body and supported by a support portion of the link;

A pair of brackets provided on the other side of the body, and

A door hinge comprising a roller provided between the brackets and moving along the outer edge of the arm.
The method of claim 2, wherein the cancer,

A cam profile composed of a recessed portion formed on the outside of the damper in contact with the roller, a first curved portion and a second curved portion extending from the recessed portion, and a flat portion connecting the first and second curved portions. Door hinge, characterized in that.
According to claim 3,

It is provided inside the housing, and is connected with a pin to the fourth opening provided adjacent to the second opening of the housing and moves linearly, further comprising a sub-spring member whose one side is supported by a sub-support inside the housing, ,

The sub spring member includes a rod, a sub spring inserted into the rod, and a sub roller provided on the other side of the rod,

When the door is closed, the door hinge characterized in that the sub roller is fitted into the recessed portion.