KR102552232B1 - Multi link hinge - Google Patents

Abstract

The present invention relates to a multi-link hinge. More specifically, the present invention relates to a multi-link hinge which is proper for opening a door which is relatively heavy, and is able to control the maximum opening angle of the door. To this end, according to the present invention, the multi-link hinge comprises: a housing installed on a main body of an instrument with a door; an arm installed on the door; a multi-link unit including a plurality of links rotatably and mutually connected between the housing and the arm, and including a first link connected to a hinge shaft of the housing, and a second link respectively rotatably connected to the first link and the arm; and an angle control unit inserted into the inside of the first link, and including a body, a rivet arranged on the body to be inserted being movable along guide holes on both sides of the first link, and a screw arranged on a front surface of the body, inserted into the guide hole on a front surface of the first link, and moving the body from the first link or fixing the body on the first link.

Description

Multi-link hinge {MULTI LINK HINGE}

The present invention relates to a multi-link hinge, and more particularly, to a multi-link hinge suitable for opening a relatively heavy door and capable of adjusting the maximum opening angle of a door.

In general, a refrigerator is a home appliance that stores food at a low temperature in an internal storage space shielded by a refrigerator door, and cools the inside of the storage space using cold air generated through heat exchange with a refrigerant circulating in a refrigerating cycle. It is configured to keep the stored food in an optimal condition.

The refrigerator has a structure in which storage spaces according to temperature may be compartmentalized and each storage space is opened and closed by each door. In this case, each door may be supported by a hinge and rotatably mounted, and the door The storage space is opened and closed by the rotation of.

On the other hand, in such a refrigerator, interference with adjacent components occurs when the door is rotated due to the thickness of the door, so a rotating hinge is being developed so as not to interfere with the components.

In the case of a conventional hinge for a refrigerator door, there is a problem in that the thickness is formed thick for the above function.

Due to this, there are problems such as a loss of space capacity of the storage space of the refrigerator and a widening of the gap between each door.

Republic of Korea Patent Publication No. 10-2021-0143056 (2021.11.26.) Republic of Korea Patent Registration No. 10-2070695 (2020.01.21.)

The present invention has been made to solve the above problems, and an object of the present invention is to provide a multi-link hinge in which a usable space is widened by opening the door while being pushed away from the main body when the door is opened.

Another object of the present invention is to provide a multi-link hinge capable of adjusting the maximum opening angle of a door according to a user's needs.

In addition, an object of the present invention is to provide a multi-link hinge capable of solving a problem of getting fingers or toes caught or deteriorating an appearance by having a plate cover that protects a link that is opened when the door is opened.

Another object of the present invention is to provide a multi-link hinge capable of being stopped during the operation of a door, for example, during an open or close operation of a door.

Another object of the present invention is to provide a multi-link hinge capable of maintaining an open state so that the door does not automatically close when the door is maximally opened.

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.

The present invention for achieving the above object, the housing installed in the main body of the mechanism provided with a door; an arm installed on the door; Consisting of a plurality of links rotatably interconnected between the housing and the arm, a first link connected to the hinge shaft of the housing, and a second link rotatably connected to the first link and the arm, respectively Multi-link unit including; And to be fitted inside the first link, a body, a rivet provided in the body and movably fitted along the guide holes on both sides of the first link, and provided on the front surface of the body for the first link. It is fitted into the guide hole on the front side and includes an angle adjusting unit including a screw for moving or fixing the body from the first link.

And according to a preferred embodiment of the present invention, the multi-link unit, a third link rotatably connected to the center of the first link and the arm, respectively; a fourth link rotatably connected to the center of the third link and the housing; Inside the first link, a cam link having a center connected to the first link; Inside the second link, a first spring link rotatably connected to the second link, the center of which is provided so as to contact the cam link; a second spring link rotatably connected to the first spring link and including a spring lever and a spring fitted to the spring lever; and a third spring link connected to the second link and including a rod inserted into the spring lever.

In addition, according to a preferred embodiment of the present invention, to protect the link opened by the opening of the door, the first plate cover rotatably connected to the housing and including a return spring provided between the housing and , A plate cover composed of a link connected closely to the arm and a second plate cover rotatably connected to the first plate cover, respectively; further comprising, the inner side of the first plate cover and the corresponding link The outer wall is provided with protrusions and janghoms, and when the protrusions are inserted into the janghoms by pressing the first plate cover, the operation of the door is stopped.

And according to a preferred embodiment of the present invention, as provided on the inside of one end of the first link, a holder, a spring provided inside the holder, and provided on both sides of the spring protrude to both sides of the holder and both sides of the first link. An open holding portion including a pusher to be; A moving groove formed in a curved shape on the inner wall of the housing to correspond to the movement position of the pusher; characterized in that a fixing groove relatively deeper than the moving groove is formed in the moving groove.

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

When the door is opened, the door is pushed away from the main body and opened to widen the usable space. As a result, there is no interference with adjacent components, and sufficient space can be secured when the user opens the door of a home appliance, for example, a refrigerator. there is

At this time, there is an effect that the user can easily adjust the maximum opening angle of the door according to the user's needs or the spatial environment for opening the door.

That is, by adjusting the position of the angle adjuster and then fixing it with a screw, the maximum opening angle of the door may be limited according to the position of the angle adjuster.

In addition, a plate cover is provided to protect the link opened when the door is opened, so that the problem of getting fingers or toes caught or the appearance of the multi-link part consisting of a plurality of links between the main body and the door can be solved. there is.

In addition, the operation of the door can be stopped by pressing the plate cover during the operation of the door, for example, during the operation of opening or closing the door. It also has an effect.

In addition, when the door is opened to the maximum, the open state can be maintained, so that safety accidents and inconveniences that may occur due to automatic closing of the door can be prevented in advance.

That is, when the door is maximally opened, the door is kept open due to the open holding part, that is, the pusher is inserted into the groove, and the open maintained state can be easily released by applying a small amount of 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

Figures 1a and 1b, Figures 2a and 2b is a perspective view and a side view showing the door open state of the multi-link hinge according to the present invention.
3 is an exploded perspective view showing a multi-link hinge according to the present invention.
4A to 4D are views for explaining a function of adjusting the maximum opening angle of the multi-link hinge according to the present invention.
5a and 5b, and FIGS. 6a to 6c are views for explaining an operation stopping function of the multi-link hinge according to the present invention.
7a and 7b, and FIGS. 8a to 8c are diagrams for explaining a function of maintaining an open state of a multi-link hinge according to the present invention.

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 for describing the embodiments and are not intended to limit the present invention, and the singular form of these terms includes the plural form unless specifically stated in the phrase, and the word referring to the direction in the description It is noted that is to help the understanding of the description and is changeable according to the point in time.

Hereinafter, a multi-link hinge according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Here, referring to the left side as the center of the drawing, the right side as the other end will be described.

Figures 1a and 1b, Figures 2a and 2b is a perspective view and a side view showing a door open state of the multi-link hinge according to the present invention, Figure 3 is an exploded perspective view showing the multi-link hinge according to the present invention.

Referring to the drawings, the multi-link hinge 100 according to the present invention is a housing 10 installed in the body of a mechanism provided with a door, an arm 20 installed in the door, and between the housing 10 and the arm 20 It includes a multi-link unit composed of a plurality of links connected to each other so as to be rotatable, and an angle adjustment unit 73.

When the door is opened through the multi-link hinge 100 according to the present invention, as shown in FIGS. 1B and 2B, due to the multi-axis connection and the multi-link portion composed of a plurality of links, the arm 20 installed on the door is attached to the main body It rotates while being pushed downward from the housing 10 to be installed, and as a result, there is an effect of widening the internal space.

The housing 10 is installed on a main body, for example, a refrigerator body, and the arm 20 is installed on a door, for example, a refrigerator door, and rotates together with the door.

The housing 10 includes a hinge axis 11 and a link axis 13, and in the case of a conventional hinge, unlike a single axis hinge as one hinge axis, the multi-link hinge 100 according to the present invention is a housing ( 10) is multi-axis including the hinge axis 11 and the link axis 13, that is, multi-link, so that when the door rotates, the drive of the multi-link unit proceeds stably, and the door moves downward. It can be rotated while being pushed out.

Next, looking at the multi-link part, it is composed of a plurality of links rotatably interconnected between the housing 10 and the arm 20 .

That is, a first link 51 is rotatably connected to the housing 10, and one end of the first link 51 is connected to the hinge shaft 11 of the housing 10 by a rivet.

The second link 52 is rotatably connected to the first link 51 and the arm 20, respectively. Referring to the drawings in more detail, one end rotates to the other end of the first link 51 with a rivet. Possibly connected, the other end is rotatably connected to the center of the arm 20 with a rivet.

The third link 53 is rotatably connected to the center of the first link 51 and the arm 20, respectively. Looking in more detail with reference to the drawings, one end is rivet to the center of the first link 51. It is rotatably connected to, and the other end is rotatably connected to one end of the arm 20 with a rivet.

The fourth link 54 is rotatably connected to the center of the third link 53 and the housing 10, respectively. Referring to the drawings in more detail, one end rotates to the other end of the housing 10 with a rivet. Possibly connected, the other end is rotatably connected to the center of the third link 53 with a rivet.

As shown in FIGS. 1B and 2B, the third and fourth links 53 and 54 serve to support the rotation of the first and second links 51 and 52, and due to this multi-link unit The door can be opened while being pushed away from the main body.

The cam link 55 is connected to the center of the first link 51 inside the first link 51, and when looking in more detail with reference to the drawings, it is provided inside the other end of the first link 51. , The center is connected to the other end of the first link 51 by a rivet, as described above, at this time, the second link 52 connected by a rivet at the other end of the first link 51 is connected by the same rivet.

In addition, one end of the cam link 55 is connected to a corner portion of the other end of the first link 51 by rivets. That is, as shown in the drawing, the cam link 55 is provided as being fitted inside the other end of the first link 51, and one end of the cam link 55 is connected to the corner portion of the other end of the first link 51. And, the center of the cam link 55 is connected to the other end of the first link 51.

In addition, when the door operates, the center of the first spring link 61 comes into contact with the other end of the cam link 55, so that the other end of the cam link 55 has a curved shape.

The first spring link 61 is rotatably connected to the second link 52 inside the second link 52, and the center is provided so as to touch the cam link 55, see the drawings. Looking in detail, inside the second link 52, one end is rotatably connected to one side of the second link 52 with a rivet, and the center is provided so as to touch the other end of the cam link 55.

That is, the first spring link 61 is provided with a roller 61a at the center, and the roller 61a is provided to touch the curved other end of the cam link 55, so that when the door is opened, the arm 20 By movement, the first spring link 61 is rotated around an axis connected to the second link 52 and moves along the other end of the cam link 55 through the roller 61a.

The second spring link 62 is rotatably connected to the first spring link 61, and when looking in more detail with reference to the drawings, one end is rotatably connected to the other end of the first spring link 61 with a rivet. and includes a spring lever 62a provided at the other end and a spring 62b fitted to the spring lever 62a.

That is, the second spring link 62 has a hole formed at the other end, and is inserted into a rivet provided at the other end of the first spring link 61 .

Here, the spring lever 62a has a penetrating shape, and the rod 63a of the third spring link 63 is fitted therein.

The third spring link 63 is connected to the second link 52, and looking in more detail with reference to the drawings, the other end of the third spring link 63 is connected to the second link 52, the spring lever (62a) includes a rod (63a) fitted therein.

That is, the rod 63a of the third spring link 63 is fitted inside the spring lever 62a of the second spring link 62, and the other end is connected to the other end of the second link 52.

At this time, the connection between the third spring link 63 and the second link 52 is made at a part slightly deviated from the other end to one side, which, as described above, is the arm 20 at the other end of the second link 52. because they are connected by means of rivets.

Here, since the other end of the third spring link 63 is fixedly connected to the second link 52, when the door operates, the second spring link 62 into which the rod 63a of the third spring link 63 is inserted The first spring link 61 is supported.

Next, as a view for explaining the angle adjuster 73, FIGS. 4A to 4D are views for explaining the function of adjusting the maximum opening angle of the multi-link hinge according to the present invention.

Referring to the drawings, the angle adjuster 73 is inserted into the inside of the first link 51, for example, the inside of the other end, and is provided adjacent to the cam link 55, as shown in the drawing, the first link At the other end of (51), it is provided at a part that is slightly out to one side than the cam link (55).

The angle adjuster 73 includes a body 73a, a rivet 73b provided on the other end of the body 73a, and a screw 73c provided on the front surface of the body 73a.

The rivet 73b is fitted into the body 73a so as to be movable along the guide holes 51b and 51c on both sides of the first link 51, for example, on both sides of the other end, and the screw 73c is the first link 51. The other end is inserted into the guide hole 51a on the front side, and the body 73a is moved or fixed from the first link 51.

That is, the position of the angle adjuster 73 can be moved by unscrewing the screw 73c, and the angle adjuster 73 is fixed by tightening the screw 73c at a desired position.

The angle adjuster 73 comes into contact with the cover 71 according to the operation of the door, and the cover 71 plays a role in meeting the movement of the angle adjuster 73 according to the operation of the door. helps to operate smoothly.

The cover portion 71 is provided to cover the front and rear surfaces at one end of the third link 53, and forms a U-shape for this purpose.

The cover part 71 comes into contact with the angle adjusting part 73 according to the operation of the door.

As shown in FIG. 4A , in the closed state of the door, the position of the angle adjusting unit 73 may be moved by using the screw 73c, and the movement of the angle adjusting unit 73 is of the first link 51. It consists of the movement of the screw 73c in the front guide hole 51a and the movement of the rivet 73b in the guide holes 51b and 51c on both sides.

In the closed state of the door, the angle adjusting unit 73 and the cover unit 71 are provided without interfering with each other.

4B is a state in which the angle adjuster 73 is in close contact with the other end within the first link 51, as shown in FIG. 4A. In this case, when the door is opened, the door is maximally opened, as shown in the drawing. It becomes possible.

In this way, in the state where the door is maximally opened by the angle adjuster 73, the angle adjuster 73 and the lid 71 are provided without interference, respectively.

4C is a state in which the angle adjuster 73 is located in the middle of the guide holes 51a, 51b, and 51c through the screw 73c. In this case, the maximum opening angle of the door can be set to about 85 degrees. there is.

In this way, in a state where the maximum opening angle of the door is maintained at about 85° by the angle adjusting unit 73, the angle adjusting unit 73 is provided to contact the cover part 71, and such a cover part 71 It serves to meet the movement of the angle adjuster 73, helping to facilitate the operation of the door.

4D shows a state in which the angle adjuster 73 is in close contact with one end within the guide holes 51a, 51b, and 51c. In this case, the maximum opening angle of the door may be set to about 65°.

In this way, in a state in which the maximum opening angle of the door is maintained at about 65° by the angle adjusting unit 73, the angle adjusting unit 73 is provided to contact the cover part 71, and such a cover part 71 It serves to meet the movement of the angle adjuster 73, helping to facilitate the operation of the door.

As described above, the maximum opening angle of the door is adjusted according to the position of the angle adjusting unit 73, so that the user can easily adjust the maximum opening angle of the door according to the user's needs or the spatial environment for opening the door. It works.

Next, the multi-link hinge 100 according to the present invention further includes a plate cover 40 for protecting the multi-link part opened by the operation of the door. 5a and 5b, and FIGS. 6a to 6c are views for explaining an operation stopping function of the multi-link hinge according to the present invention.

Referring to the drawings, the plate cover 40 includes a first plate cover 41 and a second plate cover 42 . In the present invention, the plate cover 40 is shown and described as being divided into two and connected, but is not limited to these forms.

The first plate cover 41 is rotatably connected to the housing 10, and when looking in more detail with reference to the drawings, one end is rotatably connected to the housing 10, and the other end is rotatably connected to the second plate cover 42. ) is rotatably connected to one end of the

The first plate cover 41 is provided with a protrusion 43 on the inside, and a groove 45 is formed on the outer wall of the second link 52 corresponding to the path along which the protrusion 43 is moved by the operation of the door. .

That is, when the door is opened from FIG. 5A to FIG. 5B, as indicated by A and A', the groove 45 is formed to correspond to the moving path of the protrusion 43.

At this time, the protrusion 43 is in a state where there is a gap between the grooves 45, which means that the first plate cover 41 is coupled to the outer wall of the housing 10, and the second plate cover 42 This is because the coupling is also connected to cover one end of the second plate cover 42, and in addition to this, it is because of a return spring 47 as shown in FIG. 6C. The return spring 47 is described below.

That is, as shown in FIG. 6A, the protrusion 43 of the first plate cover 41 is spaced apart from the groove 45 by a predetermined distance, and FIG. 6B shows the operation of the multi-link hinge 100 according to the present invention. This is a state in which the stop function is performed, and the protruding portion 43 is fitted into the long groove 45.

In order to stop the operation of the door during operation, the user may press the first plate cover 41 so that the protruding portion 43 is inserted into the groove 45 so that the door does not operate anymore and stops.

At this time, the operation of the door can be stopped due to the operation of the user continuing to press the first plate cover 41, and when the pressing is released, the door returns to operation, so that the operation of the door can be temporarily stopped and restored It works.

Here, in order to facilitate the return of the door operation, a return spring 47 is provided.

The return spring 47 is provided between the first plate cover 41 and the housing 10, as indicated by B in FIG. 6A, and is provided in the form shown in FIG. 5C.

By the return spring 47, the user can smoothly press the first plate cover 41, and when the press is released, the first plate cover 41 is easily returned.

The second plate cover 42 is rotatably connected to a link closely connected to the arm 20, for example, the second link 52 and the first plate cover 41, respectively, with reference to the drawings in more detail. Looking at it, one end is rotatably connected to the other end of the first plate cover 41, and the other end is rotatably connected to the central portion of the second link 52.

The first and second plate covers 42 serve to cover and protect the multi-link part opened between the housing 10 and the arm 20 by the operation of the door, and thereby the multi-link part composed of a plurality of links. There is an effect that can solve the problem that fingers or toes are caught or the appearance is deteriorated.

Next, the multi-link hinge 100 according to the present invention has a structure capable of maintaining the open state of the door, and may further include an open holding part 80 and a movable groove 87.

A description of the configuration for maintaining the open state of the door will be described with reference to FIGS. 7A and 7B, and FIGS. 8A to 8C. 7a and 7b, and FIGS. 8a to 8c are diagrams for explaining a function of maintaining an open state of a multi-link hinge according to the present invention.

As shown in FIG. 7A, the open holding part 80 is provided inside one end of the first link 51, and moves along the moving groove 87 formed in a curved shape around the hinge axis 11 provided to make it possible.

As shown in detail in FIG. 7B , the open holding part 80 is provided on both sides of the holder 81, the spring 83 provided inside the holder 81, and the spring 83 to protrude to both sides of the holder 81. It includes pushers (85a, 85b) to be.

In this open holding part 80, the pushers 85a and 85b protrude on both sides of the first link 51 and come into contact with the inner wall of the housing 10, and at this time, the pushers 85a and 85b and the corresponding housing ( 10), a curved moving groove 87 is formed on the inner wall.

That is, the moving groove 87 is formed in a curved shape on the inner wall of the housing 10 to correspond to the moving position of the pushers 85a and 85b by the operation of the door.

A fixing groove 89 relatively deeper than the moving groove 87 is formed in the moving groove 87, which is the other end of the moving groove 87, that is, of the moving groove 87 so that the door can be kept open. formed on the other end.

For this reason, when the pushers 85a and 85b move along the movable groove 87 due to the operation of the door, when the door is maximally opened, the pushers 85a and 85b are inserted into the fixing groove 89 at the other end to open the door to the maximum will keep it open.

That is, as shown in FIGS. 8A to 8C , when the door is maximally opened, the pushers 85a and 85b of the open holding part 80 are fitted into the fixing groove 89, and as a result, the door is opened. maintain.

Due to this, when the door is maximally opened, it is possible to maintain the open state, so that there is an effect of preventing safety accidents and inconveniences that may occur due to automatic closing of the door in advance.

Meanwhile, in order to cancel maintaining the maximum opening, the closing operation of the door may be performed by a user's pushing force to slightly close the door.

That is, since the pushers 85a and 85b inserted into the fixing groove 89 have elasticity through the spring 83, the door can be easily closed with little force in order to cancel the holding of the door.

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.

100; multilink hinge
10; housing
20; cancer
40: plate cover
51, 52, 53, 54, 55; link
61, 62, 63; spring link
71; cover
73; angle adjuster
80; holding part

Claims (4)

A housing installed in the main body of the appliance provided with a door;
an arm installed on the door;
Consisting of a plurality of links rotatably interconnected between the housing and the arm, a first link connected to the hinge shaft of the housing, and a second link rotatably connected to the first link and the arm, respectively Multi-link unit including; and
Fitted inside the first link to adjust the opening angle of the door, a body, a rivet provided in the body and movably fitted along guide holes on both sides of the first link, and a front surface of the body A multi-link hinge comprising: an angle adjuster provided and inserted into a guide hole on the front side of the first link and including a screw for moving or fixing the body from the first link. The method of claim 1, wherein the multi-link unit,
third links rotatably connected to the center of the first link and the arm;
a fourth link rotatably connected to the center of the third link and the housing;
Inside the first link, a cam link having a center connected to the first link;
Inside the second link, a first spring link rotatably connected to the second link, the center of which is provided so as to contact the cam link;
a second spring link rotatably connected to the first spring link and including a spring lever and a spring fitted to the spring lever; and
A multi-link hinge comprising a; third spring link connected to the second link and including a rod fitted inside the spring lever. According to claim 2,
A first plate cover that is rotatably connected to the housing and includes a return spring provided between the housing and the link that is opened by the opening of the door, the link that is closely connected to the arm, and the first plate cover. Further comprising a plate cover composed of second plate covers each rotatably connected to the first plate cover,
Protrusions and grooves are provided on the inner side of the first plate cover and the outer wall of the corresponding link, respectively, so that the operation of the door stops when the projection is inserted into the groove by the pressing operation of the first plate cover Multi-link hinge. According to claim 2,
an open holding part provided inside one end of the first link and including a holder, a spring provided inside the holder, and a pusher provided on both sides of the spring and protruding toward both sides of the holder and both sides of the first link;
Further comprising a moving groove formed in a curved shape on the inner wall of the housing to correspond to the moving position of the pusher,
The multi-link hinge, characterized in that the moving groove is formed with a relatively deeper fixing groove than the moving groove.

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