KR20240038556A - Multi-link hinge - Google Patents

Abstract

One embodiment of the present invention is a multi-link hinge including a bottom lever, a top lever, and a plurality of links connecting the bottom lever and the top lever, and is installed on one of the plurality of links, the multi-link hinge A spring unit including a spring that provides an elastic force to operate in an opening or closing direction, coupled to the spring unit, elastically supported by the spring and linearly movable with respect to the spring unit, and having a roller. A multi-link hinge is provided, comprising a unit and a cam unit mounted on one of the plurality of links and cooperating with the roller under the action of the spring.

Description

Multi-link hinge {MULTI-LINK HINGE}

The present invention relates to a multi-link hinge, and more specifically, to a multi-link hinge with improved consumer stability and operability, including a protective plate that covers the space between a plurality of links and internal parts, and an adjustment unit that adjusts the degree of elastic support. It's about.

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 with a smooth movement 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.

However, this multi-link hinge has a plurality of relatively long links in order to extend as much as desired. Due to this necessity, a gap of different sizes is formed between the plurality of links depending on the opening position of the hinge, and this gap can be expanded or contracted when the door is operated. At this time, if the user's finger is inserted into the gap, there is a risk of injury to the user.

Korean Patent Publication No. 10-1490160 (2015.01.30)

The present invention is intended to solve the problems of the prior art described above, and the purpose of the present invention is to provide consumer safety and operation by including a protective plate that covers the space between a plurality of links and internal parts and an adjustment unit that adjusts the degree of elastic support. The goal is to provide a multi-link hinge with improved performance.

In order to achieve the above object, one aspect of the present invention is a multi-link hinge including a bottom lever, a top lever, and a plurality of links connecting the bottom lever and the top lever, one of the plurality of links A spring unit is installed in and includes a spring that provides an elastic force so that the multi-link hinge operates in an opening or closing direction, is coupled to the spring unit, and moves linearly with respect to the spring unit while being elastically supported by the spring. It is possible to provide a multi-link hinge, comprising a roller unit having a roller and a cam unit installed on one of the plurality of links and interacting with the roller under the action of the spring.

In one embodiment of the invention, an adjustment comprising an adjustment screw, wherein tightening or loosening the adjustment screw interacts with the cam unit to move the cam unit toward or away from the roller unit. It may be a multi-link hinge, further comprising a unit.

In one embodiment of the present invention, the adjustment unit may be a multi-link hinge, characterized in that it is installed on a link different from the link on which the roller unit is mounted.

In one embodiment of the present invention, a bottom lever is installed on the main body of a product equipped with a door and has a first joint and a second joint part formed to be spaced apart from each other, and is installed on a door that opens and closes the front of the main body, , a top lever having a third joint and a fourth joint formed to be 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 formed to be 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, and the second joint and the second link. It may be a multi-link hinge, characterized in that it includes a fourth link pivotally connected to each of the seven joints.

In one embodiment of the present invention, it may be a multi-link hinge, including a protection plate that at least partially covers the space between the plurality of links that assume relative positions depending on whether the multi-link hinge is opened or closed.

In one embodiment of the present invention, a first plate is rotatably coupled to one of the plurality of links through a first axis, and the first plate is rotatably coupled to another one of the plurality of links through a second axis, and the first plate is rotatably coupled to one of the plurality of links through a first axis. It may be a multi-link hinge including a plate and a second plate rotatably coupled through a third axis.

In one embodiment of the present invention, the first plate and the second plate may be a multi-link hinge, wherein the first plate and the second plate are arranged to form an overlapping area.

In one embodiment of the present invention, the overlapping area of the first plate and the second plate in the closed state of the multi-link hinge is the overlap of the first plate and the second plate in the open state of the multi-link hinge. It may be a multi-link hinge, characterized in that it is larger than the area being used.

In one embodiment of the present invention, the protection plate is rotatably coupled to one of the plurality of links through a rotation axis, a plate body having a first outer guide portion and a second outer guide portion, and one of the plurality of links. It is fixed to another one of the first guide pin and the plurality of links that guide the first outer guide portion when the plate body rotates, and guides the second outer guide portion when the plate body rotates. It may be a multi-link hinge, including a second guide pin.

In one embodiment of the present invention, an outer groove recessed inward of the plate body is formed between the first outer guide part and the second outer guide part, and the first guide pin is in a closed position of the plate main body. It may be a multi-link hinge, characterized in that it is seated in the outer groove.

In one embodiment of the present invention, the protection plate is coupled to the rotation axis of the plate body, and further includes an elastic member that assists a force in the opening or closing direction when the plate body is rotated. , may be a multi-link hinge.

In one embodiment of the present invention, at least one of the first guide pin and the second guide pin may be a multi-link hinge, characterized in that it includes a head portion that restrains the upward movement of the plate body.

In one embodiment of the present invention, the protection plate includes a plate body rotatably coupled to one of the plurality of links through a rotation axis and having an outer guide portion and a rib protruding downward along the outer guide portion. It is fixed to another one of a plurality of links, and is rotatably coupled to the guide pin at the lower side of the guide pin and the guide pin that guides the outer guide portion and one side of the rib when the plate body is rotated, and moves upward. It may be a multi-link hinge, characterized in that it has a protruding protrusion, and the protrusion includes a rotating member that guides the other side of the rib.

In one embodiment of the present invention, an outer groove recessed into the inside of the plate body is formed on one side of the outer guide portion, and the guide pin is seated in the outer groove portion in a closed position of the plate body. It may be a multi-link hinge.

In one embodiment of the present invention, the guide pin may be a multi-link hinge, characterized in that it includes a head portion that restrains the upward movement of the plate body.

In one embodiment of the present invention, the protection plate is rotatably coupled to one of the plurality of links through a rotation axis, a plate body having an outer guide portion and a protrusion protruding downward, and another of the plurality of links. It is fixed to one, and includes a guide pin that guides the outer guide portion when the plate body rotates, and the protrusion is guided by contacting the outer edge of another one of the plurality of links. It can be.

In one embodiment of the present invention, at least one of the guide pin and the protrusion may be a multi-link hinge, characterized in that it includes a head portion that restrains the upward movement of the plate body.

According to one aspect of the present invention, a multi-link hinge with improved consumer safety and ease of assembly can be provided by providing a protective plate that covers the space between a plurality of links and internal components.

In addition, the degree of elastic support by the spring unit can be adjusted when the multi-link hinge is opened or closed by using the adjustment screw of the adjustment unit.

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 one embodiment of the present invention.
Figure 2 is a cross-sectional view of a multi-link hinge in a closed state according to one embodiment of the present invention.
Figure 3 is a front view of a multi-link hinge in an open state according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of a multi-link hinge in an open state according to an embodiment of the present invention.
Figure 5 is a perspective view of a multi-link hinge in a state in which the protection plate is separated according to an embodiment of the present invention.
Figures 6 (a) and (b) are views showing a state in which the adjustment screw of the adjustment unit is loosened and a state in which the adjustment screw of the adjustment unit is tightened, respectively, according to an embodiment of the present invention.
Figure 7 is a front view of a multi-link hinge including a protection plate according to a second embodiment of the present invention.
Figure 8 is an exploded view of a multi-link hinge including a protection plate according to a second embodiment of the present invention.
Figure 9 is a partially enlarged cross-sectional view of a multi-link hinge including a protection plate according to a second embodiment of the present invention.
Figure 10 is a front view of a multi-link hinge including a protection plate according to a third embodiment of the present invention.
Figure 11 is an exploded view of a multi-link hinge including a protection plate according to a third embodiment of the present invention.
Figure 12 is a perspective view of the plate body according to the third embodiment of the present invention.
Figure 13 is a partially enlarged cross-sectional view of a multi-link hinge including a protection plate according to a third embodiment of the present invention.
Figure 14 is a front view of a multi-link hinge in a closed state including a protection plate according to a modification of the third embodiment of the present invention.
Figure 15 is a front view of a multi-link hinge in an open state including a protection plate according to a modification of the third embodiment of the present invention.
Figure 16 is an exploded view of a multi-link hinge including a protection plate according to a modification of the third embodiment of the present invention.
Figure 17 is a perspective view of the plate body according to a modification of the third embodiment.
Figure 18 is a partially enlarged cross-sectional view of a multi-link hinge including a protection plate according to a modification of the third 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.

1 is a front view of a multi-link hinge in a closed state according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a multi-link hinge in a closed state according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. Figure 4 is a front view of the multi-link hinge in the open state according to an example, Figure 4 is a cross-sectional view of the multi-link hinge in the open state according to an embodiment of the present invention, and Figure 5 is a view with the protection plate separated according to an embodiment of the present invention. It is a perspective view of the multi-link hinge in the state, and Figures 6 (a) and (b) are diagrams showing a state in which the adjustment screw of the adjustment unit is loosened and a state in which the adjustment screw of the adjustment unit is tightened, respectively, according to an embodiment of the present invention. .

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 unit 20, a roller unit 30, and a cam unit 40.

The spring unit 20 is installed on one of the plurality of links and provides elastic force so that the multi-link hinge 1000 operates in the open or closed direction.

Preferably, the spring unit 20 has one end connected to the third link 500 and 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 unit 20 .

The roller unit 30 is coupled to the other end of the spring unit 20 and is elastically supported by the spring 21. That is, the roller unit 30 is elastically supported by the spring 21 and is configured to move a certain distance in the longitudinal direction of the spring unit 20.

A roller 31 that rotates while contacting the cam unit 40 is installed at one end of the roller unit 30.

The cam unit 40 is connected to the first link 300 through one of the plurality of links, preferably the fifth joint 14, and interacts with the roller 31 under the action of the spring 21.

That is, as the roller 31 of the roller unit 30 rotates while contacting the cam unit 40, the spring 21 of the spring unit 20 is tensioned or relaxed.

In other words, the spring unit 20 interacts with the cam unit 40 while the roller unit 30 is elastically supported by the spring unit 20, and the roller 31 is a cam unit along the outer peripheral surface of the cam unit 40. (40) Rotating operation is performed on the phase.

Meanwhile, the multi-link hinge 1000 further includes an adjustment unit 50.

The adjustment unit 50 is installed on one of the plurality of links, preferably the first link 300, and contacts and interacts with the cam unit 40. That is, the adjustment unit 50 is installed on a link different from the link on which the roller unit 30 is mounted.

The adjustment unit 50 has an adjustment screw 51 and is configured to move in one direction or return to its original position depending on the operation of the adjustment screw 51.

According to one embodiment, the adjustment unit 50 interacts with the cam unit 40 when the adjustment screw 51 is tightened to move the cam unit 40 toward the roller unit 30 and tightens the adjustment screw 51. When released, it interacts with the cam unit 40 to move the cam unit 40 away from the roller unit 30.

At this time, the surface of the adjustment unit 50 that is in contact with the cam unit 40 is formed as an inclined surface 52. That is, when the adjustment screw 51 is tightened, the adjustment unit 50 moves toward the cam unit 40, and the cam unit 40 moves up the inclined surface 52 in a direction closer to the roller unit 30. I do it. In addition, when the adjustment screw 51 is loosened, the adjustment unit 50 moves in a direction away from the cam unit 40, and the cam unit 40 moves down the inclined surface 52 in a direction away from the roller unit 30. It moves.

According to another embodiment, the adjusting unit 50 interacts with the cam unit 40 when the adjusting screw 51 is loosened to move the cam unit 40 toward the roller unit 30 and adjust the adjusting screw 51. When tightened, it interacts with the cam unit 40 to move the cam unit 40 away from the roller unit 30.

At this time, the surface of the adjustment unit 50 that is in contact with the cam unit 40 is formed as an inclined surface 52. That is, when the adjustment screw 51 is loosened, the adjustment unit 50 moves toward the cam unit 40, and the cam unit 40 moves up the inclined surface 52 in a direction closer to the roller unit 30. I do it. In addition, when the adjustment screw 51 is tightened, the adjustment unit 50 moves in a direction away from the cam unit 40, and the cam unit 40 moves down the inclined surface 52 in a direction away from the roller unit 30. It moves.

A guide hole 41 is formed in the cam unit 40, and the fifth joint 14 is guided by the guide hole 41 as the cam unit 40 moves.

In this way, the degree of elastic support by the spring unit 20 can be adjusted when the multi-link hinge 1000 is opened or closed by using the adjustment screw 51 of the adjustment unit 50.

Meanwhile, the multi-link hinge 1000 further includes a protection plate 700 installed on at least one of both sides.

The protection plate 700 at least partially protects the space between the plurality of links 300, 400, 500, and 600 and the internal parts 20, 30, 40, and 50, which are positioned relative to each other depending on the opening or closing of the door. Cover.

Depending on the opening or closing of the door, a gap may be formed between the plurality of links 300, 400, 500, and 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 first plate 710 and a second plate 720.

More specifically, the protection plate 700 includes a first plate 710 rotatably coupled to one of a plurality of links through a first axis 17 and a second axis 18 to another one of the plurality of links. It is rotatably coupled through a first plate 710 and a second plate 720 rotatably coupled through a third axis 19.

That is, the first plate 710 and the second plate 720 are rotatably connected to each other, and cover the space between the plurality of links while moving relative to each other according to the opening or closing operation of the multi-link hinge 1000. .

According to one embodiment, the first plate 710 is connected to the top lever 200 through the first axis 17, and the second plate 720 is connected to the bottom lever 100 through the second axis 18. can be connected to Additionally, the first plate 710 and the second plate 720 may be connected to each other through the third axis 19.

The third axis 19 may include an insertion protrusion 19a formed in the first plate 710 and a coupling hole 19b formed in the second plate 720. That is, the insertion protrusion 19a of the first plate 710 is inserted and coupled to the coupling hole 19b of the second plate 720, so that the first plate 710 and the second plate 720 are connected to the third axis 19. ) can be easily connected to each other.

Meanwhile, the first plate 710 and the second plate 720 are arranged to form an area that overlaps each other.

At this time, the overlapping area of the first plate 710 and the second plate 720 in the closed state of the multi-link hinge 1000 is the same as the first plate 710 and the second plate in the open state of the multi-link hinge 1000. It can be formed larger than the overlapping area of 720.

As such, the present invention provides improved consumer safety and ease of assembly by providing a protection plate 700 including a first plate 710 and a second plate 720 that cover the space between a plurality of links and internal components. A multi-link hinge 1000 may be provided.

Figure 7 is a front view of a multi-link hinge including a protection plate according to a second embodiment of the present invention, Figure 8 is an exploded view of a multi-link hinge including a protection plate according to a second embodiment of the present invention, and Figure 9 is a partially enlarged cross-sectional view of a multi-link hinge including a protection plate according to a second embodiment of the present invention.

7 to 9, the protection plate 800 according to the second embodiment of the present invention includes a plate body 810, a first guide pin 820, and a second guide pin 830.

More specifically, the protection plate 800 is rotatably coupled to one of a plurality of links through a rotation axis 812, and the plate body having a first outer guide portion 813 and a second outer guide portion 814 ( 810), a first guide pin 820 that is fixed to another one of the plurality of links and guides the first outer guide portion 813 when the plate body 810 rotates, and another of the plurality of links It is fixed to one and includes a second guide pin 830 that guides the second outer guide portion 814 when the plate body 810 rotates.

That is, when the plate body 810 covers the spaces between the plurality of links and rotates around the rotation axis 812 according to the opening or closing operation of the multi-link hinge 1000, the first first fixed to the different links The guide pin 820 and the second guide pin 830 guide the first outer guide part 813 and the second outer guide part 814 of the plate main body 810, respectively, and the rotational operation of the plate main body 810 is performed. Make sure it is done stably.

According to one embodiment, the first guide pin 820 may be fixed to the top lever 200, and the second guide pin 830 may be fixed to the bottom lever 100. Additionally, a through hole 811 may be formed in the plate body 810, and the rotation shaft 812 may be rotatably coupled to the second link 400 through the through hole 811. This through hole 811 and the rotation axis 812 may be located in the central portion of the plate body 810.

The first outer guide part 813 may be an outer edge area of the plate main body 810 that contacts the first guide pin 820 according to the rotational operation of the plate main body 810, and the second outer guide part 814 may be an outer edge area of the plate body 810 that contacts the second guide pin 830 according to the rotational operation of the plate body 810.

Accordingly, the first outer guide portion 813 and the second outer guide portion 814 may at least partially include a curved portion that is substantially convex outward.

According to one embodiment, one or more of the first guide pin 820 and the second guide pin 830 may include head portions 821 and 831 that constrain the upward movement of the plate body 810. That is, the head portion 821 of the first guide pin 820 and the head portion 831 of the second guide pin 830 restrict the upward movement of the plate body 810, so that the plate body 810 has a plurality of You can prevent moving away from the link.

According to one embodiment, an outer groove 815 recessed into the inside of the plate body 810 may be formed between the first outer guide part 813 and the second outer guide part 814, and the plate main body 810 In the closed position, the first guide pin 820 may be seated in the outer groove portion 815. These outer groove portions 815 may be formed so that the groove spacing becomes narrower toward the inside of the plate body 810.

Meanwhile, the protection plate 800 is coupled to the rotation axis 812 of the plate body 810 and further includes an elastic member 840 that assists the force in the opening or closing direction when the plate body 810 is rotated. can do.

According to one embodiment, the elastic member 840 may be a torsion spring and may be coupled to the rotation axis 812 at the lower side of the plate body 810.

This elastic member 840 is coupled to the rotating shaft 812 in a pretensioned state and can more easily assist the user's force when the user opens or closes the multi-link hinge 800.

As such, the protection plate 800 according to the second embodiment of the present invention includes a plate body 810 that covers the space between a plurality of links and internal parts, and a first guide pin 820 that guides the plate body 810. ) and a second guide pin 830 and an elastic member 840 that assists the opening or closing operation in a pretensioned state, consumer safety, ease of operation, and ease of assembly can be improved.

Figure 10 is a front view of a multi-link hinge including a protection plate according to a third embodiment of the present invention, Figure 11 is an exploded view of a multi-link hinge including a protection plate according to a third embodiment of the present invention, and Figure 12 is a perspective view of the plate body according to the third embodiment of the present invention, and Figure 13 is a partially enlarged cross-sectional view of the multi-link hinge including the protection plate according to the third embodiment of the present invention.

10 to 13, the protection plate 900 according to the third embodiment of the present invention includes a plate body 910, a guide pin 920, and a rotation member 930.

More specifically, the protection plate 900 is rotatably coupled to one of a plurality of links through a rotation axis 912, and has an outer guide portion 913 and a rib protruding downward along the outer guide portion 913 ( A plate body 910 having 915, a guide pin ( 920) and rotatably coupled to the guide pin 920 at the lower side of the plate body 910, and has a protrusion 931 protruding upward, the protrusion 931 being on the other side of the rib 915. It is configured to include a rotating member 930 that guides.

That is, when the plate body 910 covers the spaces between the plurality of links and rotates around the rotation axis 912 according to the opening or closing operation of the multi-link hinge 1000, the guide pin 920 and the rotation member The protrusion 931 of 930 guides both sides of the ribs 915 of the plate body 910 and ensures a stable rotation of the plate body 910.

That is, the rotating member 930 rotates along one side of the rib 915 through the protrusion 931 and prevents the rib 915 from moving away from the guide pin 920.

According to one embodiment, the guide pin 920 and the rotating member 930 may be fixed to the top lever 200. Additionally, a through hole 911 may be formed in the plate body 910, and the rotation shaft 912 may be rotatably coupled to the bottom lever 100 through the through hole 911. These through-holes 911 and the rotation axis 912 may be located biased on one side of the plate body 910.

The outer guide portion 913 may be an outer edge area of the plate body 910 that contacts the guide pin 920 as the plate body 910 rotates.

Accordingly, the outer guide portion 913 may at least partially include a curved portion that is substantially convex outward.

According to one embodiment, the guide pin 920 may include a head portion 921 that restrains the upward movement of the plate body 910. That is, the head portion 921 of the guide pin 920 restrains the upward movement of the plate body 910 and prevents the plate body 910 from moving away from the plurality of links.

According to one embodiment, an outer groove 914 recessed into the inside of the plate body 910 may be formed on one side of the outer guide portion 913, and the guide pin 920 is in the closed position of the plate body 910. It can be seated in the outer groove portion 914. These outer groove portions 914 may be formed so that the groove spacing becomes narrower toward the inside of the plate body 910.

As such, the protection plate 900 according to the third embodiment of the present invention includes a plate body 910 that covers the space between a plurality of links and internal parts, and a guide pin 920 that guides one side of the plate body 910. ) and a rotation member 930 that guides the other side of the plate body 910, consumer safety, ease of operation, and ease of assembly can be improved.

Figure 14 is a front view of a multi-link hinge in a closed state including a protection plate according to a modification of the third embodiment of the present invention, and Figure 15 is a front view of a multi-link hinge in an open state including a protection plate according to a modification of the third embodiment of the present invention. is a front view of a multi-link hinge, Figure 16 is an exploded view of a multi-link hinge including a protection plate according to a modification of the third embodiment of the present invention, and Figure 17 is a perspective view of the plate body according to a modification of the third embodiment of the present invention. , Figure 18 is a partially enlarged cross-sectional view of a multi-link hinge including a protection plate according to a modified example of the third embodiment of the present invention.

Referring to Figures 14 and 18, the protection plate 900' according to a modified example of the third embodiment of the present invention includes a plate body 910' and a guide pin 920'.

More specifically, the protection plate 900' is rotatably coupled to one of a plurality of links through a rotation axis 912', and has an outer guide portion 913' and a protrusion 915' protruding downward. It is fixed to the main body 910' and another one of the plurality of links, and includes a guide pin 920' that guides the outer guide part 913' when the plate main body 910' rotates, and the protrusion 915 ') is configured to be guided in contact with the outer edge of another one of the plurality of links.

That is, when the plate body 910' covers the spaces between the plurality of links and rotates around the rotation axis 912' according to the opening or closing operation of the multi-link hinge 1000, the guide pin 920' Guides the outer guide portion 913' of the plate main body 910', and the outer edge of one of the plurality of links guides the protrusion 915' of the plate main body 910' and guides the protrusion 915' of the plate main body 910'. Ensure rotation operation is stable.

According to one embodiment, the guide pin 920' may be fixed to the top lever 200. Additionally, a through hole 911' may be formed in the plate body 910', and the rotation axis 912' may be rotatably coupled to the bottom lever 100 through the through hole 911'. These through-holes 911' and the rotation axis 912' may be located biased on one side of the plate body 910'.

According to one embodiment, the protrusion 915' protruding from the lower side of the plate body 910' is attached to the outer edge 310 of the first link 300 among the plurality of links when the plate body 910' is rotated. It can be guided by contact.

The outer guide portion 913' may be an outer edge area of the plate body 910' that contacts the guide pin 920' according to the rotational operation of the plate body 910'.

Accordingly, the outer guide portion 913' may at least partially include a curved portion that is substantially convex outward.

According to one embodiment, the guide pin 920' may include a head portion 921' that restrains the upward movement of the plate body 910'. That is, the head portion 921' of the guide pin 920' restrains the upward movement of the plate body 910' and prevents the plate body 910' from moving away from the plurality of links. In addition, the protrusion 915' protruding from the lower side of the plate body 910' is a head portion that engages with one of the plurality of links, preferably the first link 300, and restrains the upward movement of the plate body 910'. (915a').

That is, the head portion 921' of the guide pin 920' and the head portion 915a' of the protrusion 915' both form a plurality of links when the plate body 910' is rotated. This is done to prevent moving away from.

According to one embodiment, an outer groove portion 914' recessed into the plate body 910' may be formed on one side of the outer guide portion 913', and a guide pin may be formed at the closed position of the plate body 910'. (920') may be seated in the outer groove portion (914'). These outer groove portions 914' may be formed so that the groove spacing becomes narrower toward the inside of the plate body 910'.

In this way, the protection plate 900' according to the modified example of the third embodiment of the present invention covers the space between the plurality of links and the internal parts, and includes an outer guide portion 913' and a protrusion 915' protruding downward. It includes a plate body 910' and a guide pin 920' guiding the outer guide portion 913' of the plate body 910', and the protrusion 915' is one of a plurality of links. By being configured to be guided along the outer edge, consumer safety, ease of operation, and ease of assembly can be improved.

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
310 outer border
400 2nd link
500 third link
600 4th link
700 protective plate
710 first plate
720 second plate
800 protective plate
810 plate body
820 1st guide pin
830 2nd guide pin
840 elastic member
900 protective plate
910 plate body
920 guide pin
930 rotating member
900' protection plate
910' plate body
920' guide pin
10 first joint
11 Second joint
12 Third joint
13 Fourth joint
14 Fifth joint
15 6th joint
16 7th joint
17 1st axis
18 2nd axis
19 Third axis
20 spring unit
21 spring
30 roller unit
31 roller
40 cam unit
41 guide hole
50 adjustment unit
51 adjustment screw
52 slope

Claims (17)

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 spring unit installed on one of the plurality of links and including a spring that provides elastic force to operate the multi-link hinge in an open or closed direction;
A roller unit coupled to the spring unit, elastically supported by the spring, movable linearly with respect to the spring unit, and including a roller; and
A multi-link hinge, comprising a cam unit mounted on one of the plurality of links and cooperating with the roller under the action of the spring. According to paragraph 1,
A multi-link hinge having an adjustment screw and further comprising an adjustment unit that interacts with the cam unit to move the cam unit toward or away from the roller unit when the adjustment screw is tightened or loosened. . According to paragraph 2,
A multi-link hinge, characterized in that the adjustment unit is installed on a link different from the link on which the roller unit is mounted. According to paragraph 1,
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; and
A multi-link hinge, characterized in that it includes a fourth link pivotally connected to the second joint portion and the seventh joint portion, respectively. According to paragraph 1,
A multi-link hinge, comprising a protective plate that at least partially covers the space between the plurality of links 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 first plate rotatably coupled to one of the plurality of links through a first axis; and
A multi-link hinge, comprising a second plate rotatably coupled to another one of the plurality of links through a second axis and rotatably coupled to the first plate and a third axis. According to clause 6,
A multi-link hinge, characterized in that the first plate and the second plate are arranged to form an area that overlaps each other. In clause 7,
Characterized in that the overlapping area of the first plate and the second plate in the closed state of the multi-link hinge is larger than the overlapping area of the first plate and the second plate in the open state of the multi-link hinge. Multi-link hinge. According to clause 5,
The protective plate is,
a plate body rotatably coupled to one of the plurality of links through a rotation axis and having a first outer guide portion and a second outer guide portion;
a first guide pin fixed to another one of the plurality of links and guiding the first outer guide portion when the plate body rotates; and
A multi-link hinge that is fixed to another one of the plurality of links and includes a second guide pin that guides the second outer guide portion when the plate body rotates. According to clause 6,
An outer groove recessed into the inside of the plate body is formed between the first outer guide portion and the second outer guide portion,
A multi-link hinge, characterized in that the first guide pin is seated in the outer groove portion in the closed position of the plate body. According to clause 6,
The protective plate is,
A multi-link hinge, characterized in that it further includes an elastic member coupled to the rotation axis of the plate body to assist force in an opening or closing direction when the plate body rotates. According to clause 9,
A multi-link hinge, characterized in that at least one of the first guide pin and the second guide pin includes a head portion that restrains the upward movement of the plate body. According to clause 5,
The protective plate is,
a plate body rotatably coupled to one of the plurality of links through a rotation axis and having an outer guide portion and a rib protruding downward along the outer guide portion;
a guide pin fixed to another one of the plurality of links and guiding one side of the outer guide portion and the rib when the plate body rotates; and
A multi-link hinge, characterized in that it is rotatably coupled to the guide pin at the lower side of the plate body and has a protrusion protruding upward, wherein the protrusion includes a rotation member that guides the other side of the rib. According to clause 13,
An outer groove recessed into the inside of the plate body is formed on one side of the outer guide portion,
A multi-link hinge, characterized in that the guide pin is seated in the outer groove portion in the closed position of the plate body. According to clause 13,
The guide pin is a multi-link hinge, characterized in that it includes a head portion that restrains the upward movement of the plate body. According to clause 5,
The protective plate is,
a plate body rotatably coupled to one of the plurality of links through a rotation axis and having an outer guide portion and a protrusion protruding downward; and
It is fixed to another one of the plurality of links and includes a guide pin that guides the outer guide portion when the plate body rotates,
A multi-link hinge, characterized in that the protrusion is guided by contacting an outer edge of another one of the plurality of links. According to clause 16,
A multi-link hinge, characterized in that at least one of the guide pin and the protrusion includes a head portion that restrains the upward movement of the plate body.

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