KR102613455B1 - Multi-link hinge - Google Patents

Abstract

One embodiment of the present invention is a multi-link hinge having a bottom lever, a top lever, and a plurality of links connecting the bottom lever and the top lever, at least one for pulling the top lever installed on the door in the closing direction. A linear spring member and at least one linear damping member for relieving a closing impact caused by the spring member, wherein the spring member and the damping member are disposed adjacent to each other to form an arrangement angle θ2, and the spring member Provided is a multi-link hinge configured such that the arrangement angle (θ2) is minimized in a range between 30° and 60° of the pull-out angle (θ1) of the multi-link hinge at which the load is maximized.

Description

Multi-link hinge {MULTI-LINK HINGE}

The present invention relates to a multi-link hinge, and more specifically, to a multi-link hinge, which is configured so that the arrangement angle formed by the damping member and the spring member is minimized at the point where the load on the spring member is maximized when the door is opened or closed, thereby preventing the door from opening or closing suddenly. It is about a multi-link hinge that can prevent this in advance.

In general, doors on kitchen furniture, including electronic appliances, are often opened and closed by rotating about a hinge axis, and convenience, aesthetics, and reliability have improved due to the recent improvement in cultural standards due to social and economic development. The trend is to use doors.

In particular, the multi-link hinge used in built-in type chests of drawers and home appliances is convenient to use because the door opens in a smooth motion and can be rotated as much as possible without being affected by luggage or other adjacent products. In addition, the use of multi-link hinges is gradually increasing because it has the advantage of improving adhesion even when the door is closed and has an attractive appearance.

In other words, the multi-link hinge is a product with a structure that combines sheet metal consisting of multiple joints, and is applied to doors of home appliances to maximize space utilization of the door and improve the aesthetic sensibility of home appliances.

This multi-link hinge is provided with a spring member with a pretensioning function and a damper member with a damping function for user convenience when operating the door. At this time, an optimal arrangement structure of the spring member and damper member is required for improved operating performance of the door.

Korean Patent Publication No. 10-1490160 (2015.01.30)

The present invention is intended to solve the problems of the prior art described above. The purpose of the present invention is to minimize the arrangement angle between the damping member and the spring member at the point where the load on the spring member is maximized when opening and closing the door, It provides a multi-link hinge that can prevent the device from opening or closing suddenly.

In order to achieve the above object, one aspect of the present invention is a multi-link hinge having a bottom lever, a top lever, and a plurality of links connecting the bottom lever and the top lever, wherein the top lever installed on the door It includes at least one linear spring member for pulling in a closing direction and at least one linear damping member for relieving a closing shock caused by the spring member, wherein the spring member and the damping member form an arrangement angle θ2 with each other. A multi-link hinge is provided, which is disposed adjacently and is configured to minimize the arrangement angle (θ2) in a range between 30° and 60°, a withdrawal angle of the multi-link hinge at which the load of the spring member is maximized.

In one embodiment of the present invention, the arrangement angle θ2 may be a multi-link hinge, characterized in that it is between 5° and 15° over the entire lead-out area of the multi-link hinge.

In one embodiment of the present invention, the arrangement angle θ2 may be a multi-link hinge, characterized in that it represents a gentle parabolic curve over the entire lead-out area of the multi-link hinge.

In one embodiment of the present invention, the multi-link hinge may be a multi-link hinge, characterized in that it includes four links connecting the bottom lever and the top lever.

In one embodiment of the present invention, a multi-link hinge comprising at least one protection plate covering the plurality of links and internal components that assume relative positions to each other depending on the opening or closing of the multi-link hinge. It can be.

In one embodiment of the present invention, the protection plate includes a main body portion whose one end is rotatably supported by one of the bottom lever and the top lever, and a guide guided by a guide pin fixed to one of the plurality of links. The guide portion may be a multi-link hinge that is detachably provided in the main body portion.

In one embodiment of the present invention, the guide portion may be a multi-link hinge, wherein the guide portion is provided only on the inner surface of the main body portion and the guide pin is not exposed to the outside.

According to one aspect of the present invention, the spring member and the damping member are arranged adjacent to each other at an arrangement angle, so that the multi-link hinge can have a compact structure.

Additionally, at the point where the load of the spring member is maximum, the arrangement angle formed by the spring member and the damping member is minimized, so that the damping force transmission efficiency by the damping member can be maximized.

In addition, by controlling the arrangement angle of the spring member and the damping member according to the drawing area of the multi-link hinge to a specific range, the door can be operated smoothly and the user's operating sensitivity can be improved.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a front view of a multi-link hinge in a closed state according to an embodiment of the present invention.
Figure 2 is a front view of a multi-link hinge in a mid-open state according to an embodiment of the present invention.
Figure 3 is a front view of a multi-link hinge in a fully open state according to an embodiment of the present invention.
Figures 4 (a) and (b) are a front view and a cross-sectional view, respectively, of a multi-link hinge with the protection plate removed in a closed state according to an embodiment of the present invention.
Figure 5 is a front view and a partially enlarged view of a multi-link hinge with the protection plate removed in the mid-open state according to an embodiment of the present invention.
Figures 6 (a) and (b) are a front view and a cross-sectional view, respectively, of a multi-link hinge in a fully open state with the protection plate removed, according to an embodiment of the present invention.
Figure 7 is a table showing the arrangement angles of the spring member and the damper member according to the withdrawal angle of the multi-link hinge according to an embodiment of the present invention.
Figure 8 is a graph showing the arrangement angle of the spring member and the damper member according to the withdrawal angle of the multi-link hinge according to an embodiment of the present invention.
Figure 9 is a flow chart of assembling a protection plate according to an embodiment of the present invention.
Figure 10 is a perspective view of a protection plate according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention may be implemented in various different forms and, therefore, is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to be “connected” to another part, this includes not only cases where it is “directly connected,” but also cases where it is “indirectly connected” with another member in between. . Additionally, when a part is said to “include” a certain component, this does not mean that other components are excluded, but that other components can be added, unless specifically stated to the contrary.

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

Figure 1 is a front view of a multi-link hinge in a closed state according to an embodiment of the present invention, Figure 2 is a front view of a multi-link hinge in a mid-open state according to an embodiment of the present invention, and Figure 3 is an embodiment of the present invention. It is a front view of the multi-link hinge in a fully open state according to an embodiment, and Figures 4 (a) and (b) are front views of the multi-link hinge with the protection plate removed in a closed state according to an embodiment of the present invention, respectively. It is a cross-sectional view, and Figure 5 is a front view and a partial enlarged view of the multi-link hinge with the protection plate removed in the mid-open state according to an embodiment of the present invention, and Figures 6 (a) and (b) are each of the present invention. Front and cross-sectional views of a multi-link hinge with the protection plate removed in a fully open state according to an embodiment.

1 to 6, the multi-link hinge 1000 of the present invention includes a bottom lever 100, a top lever 200, a first link 300, a second link 400, and a third link 500. ) and a fourth link 600.

That is, the multi-link hinge 1000 is composed of a structure in which a plurality of levers 100 and 200 are connected to a plurality of links 300, 400, 500 and 600. This multi-link hinge 1000 can be applied to products such as built-in home appliances and furniture with doors.

A plurality of levers (100, 200) and a plurality of links (300, 400, 500, 600) can rotate with each other so that the door of the product can be easily operated from the open position to the closed position, or from the closed position to the open position, even in a narrow space. It is connected.

The bottom lever 100 is installed on the main body of a product equipped with a door, and includes a first joint 10 and a second joint 11 that are spaced apart from each other.

The top lever 200 is installed on a door that opens and closes the front of the main body, and includes a third joint 12 and a fourth joint 13 that are spaced apart from each other.

The first link 300 has one end pivotably connected to the first joint 10 and includes a fifth joint 14 formed on the other end and a sixth joint 15 formed on the inside.

The second link 400 is pivotally connected to the third joint 12 and the fifth joint 15, and has a seventh joint 16 on the inside.

The third link 500 is pivotally connected to the fourth joint portion 13 and the fifth joint portion 14.

The fourth link 600 is pivotally connected to the second joint portion 11 and the seventh joint portion 16.

Meanwhile, the multi-link hinge 1000 includes a spring member 20 for pulling the top lever 200 when the door is closed and a damping member 50 for alleviating shock. That is, the spring member 20 is provided to ensure a closing action in the closing area, and the damping member 50 is provided to brake this closing action.

2)을 이루도록 배치될 수 있다. Meanwhile, the spring member 20 and the damping member 50 are adjacent to each other at an arrangement angle (

It can be arranged to achieve 2).

That is, the spring member 20 and the damping member 50 may be disposed adjacently between links of the multi-link hinge 1000, between the bottom lever 100 and the link, or between the top lever 200 and the link. Preferably, the spring member 20 and the damping member 50 may be disposed adjacent to each other with an arrangement angle θ2 between the top lever 200 and the third link 500.

Accordingly, the multi-link hinge 1000 can compactly implement a closing function by the spring member 20 and a damping function by the damping member 50. Additionally, due to the adjacent arrangement of the spring member 20 and the damping member 50, the relative movement between the spring member 20 and the damping member 50 is reduced, thereby reducing the required installation space.

More specifically, the damping member 50 is a linear damper, and one end is connected to the third link 500 and the other end is connected to the top lever 200 at a position spaced apart from the spring member 20. You can.

Damping member 50 is preferably a fluid damper and may be filled with oil, such as silicone oil. Additionally, the damping member 50 may be configured to include a cylinder, a piston, and a piston rod movably mounted therein.

One end of the spring member 20 may be connected to a shaft provided in the spring lever 30, and the other end may be connected to the top lever 200.

The spring member 20 includes a spring 21 in the form of a coil spring. At this time, the spring 21 may be formed as a compression spring. Of course, it is also possible to form the spring 21 as a tension spring or to use more than one spring 21 for the spring member 20 .

The spring lever 30 may be rotatably mounted on the third link 500. Additionally, a roller 31 that rotates while contacting the cam member 40 is installed on the spring lever 30.

The cam member 40 may be connected to the first link 300 through two axes, and as the roller 31 of the spring lever 30 contacts and rotates the cam member 40, the spring of the spring member 20 (21) is tense or relaxed.

That is, the spring member 20 is supported through the spring lever 30 and the roller 31, and the roller 31 rotates on the cam member 40 along the running surface. Through this structure, in the closing area where the withdrawal angle θ1 of the multi-link hinge 1000 ranges from approximately 0° to 30°, the spring member 20 can effectively bias the top lever 200 in the closing direction. do.

Figure 7 is a table showing the arrangement angles of the spring member and the damper member according to the withdrawal angle of the multi-link hinge according to an embodiment of the present invention, and Figure 8 is a table showing the arrangement angle of the multi-link hinge according to an embodiment of the present invention. This is a graph showing the arrangement angles of the spring members and damper members.

Referring to Figures 4 to 8, the multi-link hinge 1000 operates from a closed state, that is, a state where the withdrawal angle (θ1) is 0°, to a fully open state, that is, a state where the withdrawal angle (θ1) is approximately 105°. do.

In the process of opening or closing the multi-link hinge 1000, the compressive load acting on the spring member 20 through the roller 31 and the cam member 40 has a withdrawal angle θ1 of 30° to 60°, preferably becomes maximum at 40° to 50°.

At this time, the present invention relates to the angle formed by the spring member 20 and the damping member 50 in a range between 30° and 60° at the withdrawal angle θ1 of the multi-link hinge 1000 at which the load of the spring member 20 is maximized. The arrangement angle (θ2) may be configured to be minimal.

That is, at the point where the load of the spring member 20 is maximum, the arrangement angle θ2 formed by the spring member 20 and the damping member 50 becomes minimum, so the damping force transmission efficiency by the damping member 50 becomes It becomes the maximum. As a result, it is possible to prevent the door from being tightly closed or opened due to the elastic force generated by the spring member 20 when the withdrawal angle θ1 exceeds 30° to 60°.

Referring to FIGS. 7 and 8, the spring member 20 and the damping member 50 may be aligned with each other at an arrangement angle θ2 substantially over the entire drawing area of the multi-link hinge 1000, specifically. It can be aligned between 5° and 15°. Accordingly, the spring member 20 and the damping member 50 can be arranged close to each other, and the multi-link hinge 1000 can be configured in a compact structure.

Additionally, the arrangement angle θ2 of the spring member 20 and the damping member 50 may be configured to represent a gentle parabolic curve over the entire lead-out area of the multi-link hinge 1000. As a result, although deflection movement occurs due to the elastic force of the spring member 20 during the opening or closing process of the door, the array angle θ2 is controlled to display a gentle parabolic graph over the entire drawn-out area of the multi-link hinge 1000. This allows the door to operate smoothly and the user's operating sensitivity to improve.

With reference to FIGS. 4 to 6, the opening or closing process of the multi-link hinge 1000 will be described in detail as follows.

In Figure 4, the multi-link hinge 1000 is in a closed state, that is, the withdrawal angle θ1 is 0°, and at this time, the arrangement angle θ2 of the spring member 20 and the damping member 50 is approximately 13.5°. It will be achieved. In addition, since the roller 31 and the cam member 40 are not yet in contact, the compressive load due to the cam member 40 does not act on the spring member 20.

In Figure 5, the multi-link hinge 1000 is in a mid-open state, that is, the withdrawal angle θ1 is in the range of approximately 40° to 50°, and at this time, the arrangement angle θ2 of the spring member 20 and the damping member 50 ) is approximately 7° to 8°. In addition, in the state where the roller 31 and the cam member 40 are in closest contact, the compressive load due to the cam member 40 on the spring member 20 is maximized. That is, at the point where the load of the spring member 20 is maximum, the arrangement angle θ2 formed by the spring member 20 and the damping member 50 becomes minimum, so the damping force transmission efficiency by the damping member 50 becomes It becomes the maximum.

In Figure 6, the multi-link hinge 1000 is in a fully open state, that is, the withdrawal angle θ1 is approximately 105°, and at this time, the arrangement angle θ2 of the spring member 20 and the damping member 50 is approximately 12.5. ° is achieved. In addition, the roller 31 and the cam member 40 are in contact with each other, and a portion of the compressive load due to the cam member 40 acts on the spring member 20.

In this way, the multi-link hinge 1000 is configured so that the arrangement angle θ2 formed by the damping member 50 and the spring member 20 is minimized at the point where the load on the spring member 20 is maximized when opening and closing the door, It has the effect of preventing the door from opening or closing suddenly.

Figure 9 is a flow chart of assembling a protection plate according to an embodiment of the present invention, and Figure 10 is a perspective view of a protection plate according to an embodiment of the present invention.

1 to 3, 9, and 10, the multi-link hinge 1000 further includes a protection plate 700 installed on at least one of both sides.

The protection plate 700 covers the plurality of links 300, 400, 500, 600 and the internal parts 20, 30, 40, and 50, which are positioned relative to each other depending on whether the door is opened or closed.

Depending on the opening or closing of the door, a gap may be formed between the plurality of links (300, 400, 500, 600), and the protection plate 700 covers this gap to reduce the risk of the user's finger being inserted into the gap and being injured. It can be prevented.

Meanwhile, the protection plate 700 includes a main body portion 710 and a guide portion 720.

More specifically, the protection plate 700 includes a body portion 710, one end of which is rotatably supported by one of the bottom lever 100 and the top lever 200, and the plurality of links 300, 400, 500, It is configured to include a guide portion 720 guided by a guide pin 730 fixed to one of the 600). According to one embodiment, one end of the protection plate 700 may be rotatably supported by the bottom lever 100, and the guide pin 730 may be fixed to the third link 500.

At this time, the guide portion 720 is provided to be detachable from the main body portion 710. According to one embodiment, the guide part 720 is detachably provided only on the inner surface of the main body 710 so that the guide pin 730 is not exposed to the outside. That is, since the main body portion 710 and the guide portion 720 are configured as separate members, the guide portion 720 and the guide pin 730 are not exposed to the outside during the opening or closing operation, thereby improving consumer safety. You can.

The main body 710 has a fixing hole 712 coupled to one of the bottom lever 100 and the top lever 200 through a fixing screw 714, and a plurality of coupling holes coupled to the guide portion 720. Includes (711).

The guide portion 720 is formed on the edge and is fixed to one of the plurality of coupling protrusions 722 inserted into the plurality of coupling holes 711 and the plurality of links 300, 400, 500, and 600. It includes a longitudinal hole 721 guided by a pin 730. The longitudinal hole 721 guides the guide pin 730.

Meanwhile, the main body portion 710 may further include at least one support member 713 that firmly fixes and supports the edge of the guide portion 720 when the guide portion 720 is coupled. This support member 713 is formed integrally with the main body 710, and firmly supports the outer edge of the guide portion 720 to prevent shaking during the opening or closing operation.

With reference to FIG. 9, the assembly sequence of the protection plate 700 is described as follows.

First, the guide portion 720 is placed on the multi-link hinge 1000, and then the guide pin 730 is fixed to the third link 500 through the longitudinal hole 721. Next, the main body 710 is attached to the guide part 720 by combining the coupling protrusion 722 of the guide part 720 and the coupling hole 711 of the main body 710. Finally, the fixing screw 714 is coupled to the bottom lever 100 through the fixing hole 712 of the main body 710. Accordingly, the protection plate 700 can be easily assembled to the multi-link hinge 1000.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the patent claims described below, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

1000 multilink hinge
100 bottom lever
200 top lever
300 first link
400 2nd link
500 third link
600 4th link
700 protective plate
710 main body
720 Guide Department
730 guide pin
10 first joint
11 Second joint
12 Third joint
13 Fourth joint
14 Fifth joint
15 6th joint
16 7th joint
20 spring member
30 spring lever
40 Cam member
50 Damping member
θ1 withdrawal angle of multi-link hinge
θ2 Arrangement angle of spring member and damping member

Claims (7)

A multi-link hinge having a bottom lever, a top lever, and a plurality of links connecting the bottom lever and the top lever,
A bottom lever installed on the main body of a product equipped with a door and having a first joint and a second joint that are spaced apart from each other;
a top lever installed on a door that opens and closes the front of the main body, and having a third joint and a fourth joint that are spaced apart from each other;
a first link having one end pivotably connected to the first joint and having a fifth joint and a sixth joint that are spaced apart from each other;
a second link pivotally connected to the third joint and the sixth joint, respectively, and having a seventh joint;
a third link pivotally connected to the fourth joint and the fifth joint, respectively;
a fourth link pivotally connected to the second joint portion and the seventh joint portion, respectively;
at least one linear spring member for pulling the top lever installed on the door in a closing direction; and
At least one linear damping member to alleviate the closing shock caused by the spring member,
The spring member and the damping member connect between the top lever and the third link and are arranged adjacent to each other to form an arrangement angle (θ2),
With respect to the withdrawal angle θ1 of the multi-link hinge, which is the angle between the bottom lever and the top lever, the withdrawal angle θ1 of the multi-link hinge at which the load of the spring member is maximized is between 30° and 60°. A multi-link hinge configured to minimize the array angle (θ2) in the range. According to paragraph 1,
A multi-link hinge, characterized in that the arrangement angle (θ2) is between 5° and 15° over the entire lead-out area of the multi-link hinge. According to paragraph 1,
The arrangement angle (θ2) is a multi-link hinge, characterized in that it represents a gentle parabolic graph over the entire lead-out area of the multi-link hinge. According to any one of claims 1 to 3,
The multi-link hinge is characterized in that it includes four links connecting the bottom lever and the top lever. According to any one of claims 1 to 3,
A multi-link hinge, comprising at least one protection plate covering the plurality of links and internal parts that assume positions relative to each other as the multi-link hinge is opened or closed. According to clause 5,
The protective plate is,
a main body portion whose one end is rotatably supported by one of the bottom lever and the top lever; and
It includes a guide portion guided by a guide pin fixed to one of the plurality of links,
A multi-link hinge, wherein the guide portion is detachably provided in the main body portion. According to clause 6,
A multi-link hinge, characterized in that the guide portion is provided only on the inner side of the main body portion so that the guide pin is not exposed to the outside.

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