WO2024104479A1 - Hinge and refrigerator - Google Patents

Abstract

The present application relates to the technical field of household appliances and discloses a hinge, which comprises: a cabinet body mount base, a door body connection base, and a connecting rod assembly. The connecting rod assembly comprises a plurality of flat connecting rods, and one end of a portion of the connecting rods are rotatably connected to the cabinet body mount base; one end of at least one connecting rod is provided with an engagement groove, and the engagement groove engages with one end of another connecting rod and is rotatably connected to said connecting rod. The present invention prevents the connection position between connecting rods from being subjected to force deforming, or from shaking; the connection stability between connecting rods is improved, and the overall weight-bearing capacity of the hinge is retained. Further disclosed in the present application is a refrigerator.

Description

Hinge, refrigerator

This application is based on application number 202223072495.8, filed on November 18, 2022, application number 202223076489.X, filed on November 18, 2022, application number 202223076527.1, filed on November 18, 2022, application number 202223072616.9, filed on November 18, 2022, application number 202223076486.6, filed on November 18, 2022, application number 2022223072619.2, filed on November 18, 2022, application number 202211450719 .6, with an application date of November 18, 2022, and application number 202223072620.5, with an application date of November 18, 2022, and application number 202211446640.6, with an application date of November 18, 2022, and application number 202211450865.9, with an application date of November 18, 2022, and application number 202211446699.5, with an application date of November 18, 2022, and application number 202211447800.9, with an application date of November 18, 2022, and Chinese patent applications are filed, and priority of the above Chinese patent applications is claimed, and all contents are hereby introduced into this application as a reference.

Technical Field

The present application relates to the technical field of household appliances, for example, to a hinge and a refrigerator.

Background technique

At present, when the door of the existing built-in refrigerator is opened, the door body cannot collide with the obstacles beside it, and at the same time, the internal drawers and shelves must be pulled out normally for use. In order to ensure the above functional effects, the door body hinges mostly use multi-link (six-link) hinges, and the pure four-link hinges are greatly limited in function. The existing multi-link hinges need to take into account the support strength, the door body can hang door panels, door closers, door closing damping and other functions. The hinges mostly use U-shaped sheet metal links that are interlocked layer by layer. The thickness itself is relatively thick, and the installation beam will also become thicker accordingly, which causes a lot of waste on the overall volume of the refrigerator and also makes the refrigerator less beautiful. When the refrigerator has upper and lower doors, the middle beam needs to install two identical upper and lower hinges, which becomes particularly serious.

Summary of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key/critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

The disclosed embodiments provide a hinge and a refrigerator to solve the technical problems that a connecting rod is easily deformed due to long-term stress and insufficient stability easily causes shaking between a door body and a refrigerator body.

In some embodiments, the hinge includes: a box mounting seat, a door connecting seat and a connecting rod assembly. The box mounting seat is a U-shaped seat, defining a first accommodating portion; the door connecting seat is a U-shaped seat, defining a second accommodating portion; one end of the connecting rod assembly is rotatably connected to the first accommodating portion, and the other end is rotatably connected to the second accommodating cavity, wherein when the connecting rod assembly is in a folded state, the box mounting seat and the door connecting seat are adapted to make the first accommodating portion and the second accommodating portion completely wrap the connecting rod assembly.

The disclosed embodiments provide a hinge and a refrigerator to solve the technical problem that increasing the contact area between various positions of the hinge will cause increased friction and severe wear.

In some embodiments, the hinge includes: a box body mounting seat, a door body connecting seat, a connecting rod assembly and a wear-resistant sheet. The connecting rod assembly includes a plurality of sheet-shaped connecting rods, some of which are rotatably connected to each other, one end of some of which is rotatably connected to the box body mounting seat, and one end of some of which is rotatably connected to the door body connecting seat; the wear-resistant sheet is arranged at the connection between the box body mounting seat, the door body connecting seat and the connecting rod to reduce wear.

The disclosed embodiments provide a hinge and a refrigerator to solve the technical problems of maintaining the overall thickness of the connecting rod assembly at a relatively small thickness, improving the stability of the interconnection between the connecting rods, and improving the load-bearing capacity of the overall hinge.

In some embodiments, the hinge includes: a box mounting seat, a door connecting seat and a connecting rod assembly. The connecting rod assembly includes a plurality of sheet-shaped connecting rods, one end of some connecting rods is rotatably connected to the box mounting seat, one end of some connecting rods is rotatably connected to the door connecting seat, and one end of at least one connecting rod is provided with a clamping groove, and the clamping groove clamps one end of another connecting rod and is rotatably connected to it.

The embodiments of the present disclosure provide a hinge and a refrigerator to solve the technical problem of reducing the thickness of the hinge while maintaining its supporting capacity and improving the stability of the hinge.

In some embodiments, the hinge includes: a box mounting seat, a door connecting seat and a connecting rod assembly. The box mounting seat is a U-shaped seat, defining a receiving portion; the door connecting seat is also a U-shaped seat; the connecting rod assembly includes a plurality of sheet-shaped connecting rods, one end of some connecting rods is rotatably connected to the box mounting seat, one end of some connecting rods is rotatably connected to the door connecting seat, and the ends of the connecting rods rotatably connected to the box mounting seat and the door connecting seat are both configured with protrusions extending outwardly from the surface of the connecting rod.

The embodiments of the present disclosure provide a hinge and a refrigerator to solve the technical problem that the overall volume of the refrigerator is wasted due to the excessive thickness of the hinge.

In some embodiments, the hinge includes: a first connecting rod, a second connecting rod and a third connecting rod. The middle area of the second connecting rod is hinged to the middle area of the first connecting rod, the first connecting rod and the second connecting rod are both sheet-shaped structures, and the hinged surfaces of the two are in contact with each other; the third connecting rod is hinged to one end of the second connecting rod, and the second connecting rod is provided with a limit groove extending from the hinge point.

The disclosed embodiments provide a hinge and a refrigerator to solve the technical problem of preventing a door closer from occupying too much installation space and affecting the overall volume of the refrigerator.

In some embodiments, the hinge includes: a box mounting seat, a connecting rod assembly and a door closer. The box mounting seat defines a receiving portion; one end of the connecting rod assembly is installed in the receiving portion and is rotatably connected to the box mounting seat, and the other end is used to connect to the door body; the door closer is arranged in the receiving portion and is linked to a connecting rod in the connecting rod assembly.

The embodiment of the present disclosure provides a hinge and a refrigerator to solve the problem of preventing a door closer from occupying too much installation space and affecting the refrigerator. Technical issues regarding overall volume.

In some embodiments, the hinge includes: a box mounting seat, a connecting rod assembly and a door closer. The side wall of the box mounting seat is provided with a slide groove; the connecting rod assembly includes a plurality of connecting rods, one end of which is rotatably arranged in the slide groove and is limited to slide along the slide groove; the door closer is arranged in the slide groove and is linked to the connecting rod rotatably arranged in the slide groove.

In some embodiments, a refrigerator includes: the hinge of the above embodiment.

The box mounting seat and the door body connecting seat are both configured as U-shaped seats, and the first accommodating portion and the second accommodating portion are respectively configured therein. When the door body connecting seat and the box mounting seat are adapted to be connected, the first accommodating portion and the second accommodating portion can be used to store and wrap the entire connecting rod assembly. On the one hand, the bottom side of the first accommodating portion can be used to support the connecting rod assembly to prevent the connecting rod assembly from being deformed due to long-term force when the door body is closed. On the other hand, the connecting rod assembly can be clamped as a whole in the first accommodating portion and the second accommodating portion, which can fix the connecting rod assembly and prevent the connecting rod assembly from shaking, thereby improving the overall stability of the hinge.

Wear-resistant sheets are provided at the joints where some of the connecting rods in the connecting rod assembly are rotatably connected to each other, at the joints where some of the connecting rods and the box mounting seats, and at the joints where some of the connecting rods and the door body connecting seats are connected, and the wear-resistant sheets are used to fill the connecting gaps. The connecting rods, the box mounting seats and the door body connecting seats are all configured as U-shaped seats, and the first accommodating portion and the second accommodating portion are respectively provided therein. In the case of rotation between the door body connecting seat and the box mounting seat, the entire connecting rod assembly can be stored and wrapped by the first accommodating portion and the second accommodating portion. On the one hand, the bottom side of the first accommodating portion can be used to support the connecting rod assembly to prevent the connecting rod assembly from being deformed due to long-term force when the door body is closed. On the other hand, the connecting rod assembly is clamped as a whole in the first accommodating portion and the second accommodating portion, which can fix the connecting rod assembly, play a role in lubrication and wear resistance, reduce wear between each other, improve the stability of rotation at each position, prevent the connecting rod assembly from shaking, improve the load-bearing capacity for maintaining the overall stability of the hinge, and improve the stability and durability of the hinge.

Setting the connecting rod as a sheet-shaped structure can reduce the overall thickness of the hinge, wherein the position where the connecting rods are connected in the hinge becomes a suspended connection point. This position is not connected to the box mounting seat or the door body connecting seat and is subjected to greater force. Therefore, a clamping groove is set at one end of one of the connecting rods to clamp one end of the other connecting rod. This can improve the stability of the connection at this position and enable this position to withstand greater force, thereby preventing the connection position between the connecting rods from being deformed or shaking due to force, thereby improving the stability of the connection between the connecting rods and maintaining the overall load-bearing capacity of the hinge.

A protrusion is provided at one end of the connecting rod and the box mounting seat and the door body connecting seat, so that the side of the connecting rod can contact the inner wall of the box mounting seat and the door body connecting seat to expand the contact area. The box mounting seat and the door body connecting seat are used to clamp the connecting rod, and the weight borne by the connecting rod is better transferred to the box mounting seat and the door body connecting seat, thereby better protecting the connecting rod, reducing the force on the connecting rod, and preventing the connecting rod from deforming. Through this structural design, after the sheet-shaped connecting rod is used to reduce the overall hinge, the overall bearing capacity of the hinge can be maintained, thereby improving the stability of the hinge.

The first connecting rod and the second connecting rod are connected to each other to jointly bear the weight of the refrigerator door body, and both are set as a sheet-shaped structure. The surfaces of the two are directly in contact with each other, and the purpose of reducing the thickness of the entire hinge is achieved by reducing the thickness of each of the two and the gap between them. The first connecting rod and the second connecting rod are in contact with each other, increasing the contact area between the two, so that the entire contact surface can be subjected to force, improving the support, and thus maintaining the normal support effect of the hinge and reducing the overall thickness of the hinge.

The structure of the cabinet mounting seat is changed to define an accommodating portion inside the seat, one end of the connecting rod assembly and the door closer are mounted in the accommodating portion, and the door closer is linked to a connecting rod in the connecting rod assembly to assist the connecting rod assembly in storage and closure. The door closer is integrated inside the cabinet mounting seat so that it can overlap with the connecting rod assembly in the horizontal direction without occupying additional space, thereby reducing the overall thickness of the hinge and the door closer, saving installation space, and reducing the impact on the overall volume of the refrigerator.

A slide groove is arranged on the cabinet mounting seat. As the door body is opened relative to the cabinet body, an end of a connecting rod in the connecting rod assembly slides in the slide groove. A door closer is arranged in the slide groove. Since the movement of the connecting rod relative to the slide groove is closely related to the door body switch, the door closer arranged in the slide groove can play a role in assisting door closing by pushing the connecting rod to slide in the slide groove. By arranging the door closer in the slide groove, the normal auxiliary door closing function can be maintained and the space in the slide groove can be fully utilized, thereby reducing the space occupied by the door closer, reducing the overall thickness of the hinge and the door closer, saving installation space, and reducing the impact on the overall volume of the refrigerator.

The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

FIG1 is an exploded schematic diagram of a hinge provided by an embodiment of the present disclosure;

FIG2 is a schematic diagram of a closed structure of a hinge provided in an embodiment of the present disclosure;

FIG3 is a schematic structural diagram of a matching load-bearing structure provided by an embodiment of the present disclosure;

FIG4 is a schematic diagram of an assembly structure of a right-angle connecting piece provided in an embodiment of the present disclosure;

FIG5 is a schematic structural diagram of a hinge provided by an embodiment of the present disclosure;

FIG6 is a schematic diagram of the structure of a slide groove and a slider provided in an embodiment of the present disclosure;

FIG7 is a schematic structural diagram of a connecting rod assembly provided by an embodiment of the present disclosure;

FIG8 is an exploded side view of a connecting rod assembly provided by an embodiment of the present disclosure;

FIG9 is an exploded schematic diagram of a connecting rod assembly provided by an embodiment of the present disclosure;

FIG10 is an exploded schematic diagram of another hinge provided by an embodiment of the present disclosure;

FIG11 is an exploded top view of a hinge provided in an embodiment of the present disclosure;

FIG12 is a schematic structural diagram of a connecting rod assembly and a door closer provided in an embodiment of the present disclosure;

FIG13 is a schematic structural diagram of a protruding gear provided in an embodiment of the present disclosure;

FIG14 is a schematic diagram of the installation structure of another door closer provided by an embodiment of the present disclosure;

FIG15 is a schematic diagram of the installation structure of another door closer provided in an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of a refrigerator provided in an embodiment of the present disclosure.

Reference numerals:

100, box body mounting seat; 101, slide groove; 102, slider; 103, pin shaft; 104, pin shaft fixing part; 105, first accommodating part; 106, slide groove; 200, door body connecting seat; 201, second accommodating part; 202, right-angle connecting piece; 300, connecting rod assembly; 301, first connecting rod; 302, second connecting rod; 303, third connecting rod; 304, limiting groove; 305, clamping groove; 306, bending section; 307, protruding part; 308, connecting hole; 309, protruding gear; 310, positioning concave surface; 311, sliding surface; 312, accommodating groove; 400, wear-resistant sheet; 401, gasket-type wear-resistant sheet; 402, wrapped wear-resistant sheet; 500, matching load-bearing structure; 501, load-bearing groove; 502, load-bearing protrusion; 600, door closer; 601, sliding rod; 602, sliding seat; 603, spring; 604, roller; 605, compression spring; 606, arc-shaped sheet; 607, positioning sliding rod; 608, sliding rod groove; 609, arc-shaped spring sheet; 1000, refrigerator.

Detailed ways

In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have specific directions, or to be constructed and operated in specific directions. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure may be understood according to specific circumstances.

In addition, the terms "disposed", "connected" and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, A detachable connection or an integral structure; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

Unless otherwise stated, the term "plurality" means two or more.

In the embodiments of the present disclosure, the character "/" indicates that the objects before and after are in an "or" relationship. For example, A/B means: A or B. The term "and/or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and/or B means: A or B, or, A and B.

It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

As shown in Figures 1-4, the embodiment of the present disclosure provides a hinge including: a box mounting seat 100, a door connecting seat 200 and a connecting rod assembly 300. The box mounting seat 100 is a U-shaped seat, defining a first accommodating portion 105; the door connecting seat 200 is a U-shaped seat, defining a second accommodating portion 201; one end of the connecting rod assembly 300 is rotatably connected to the first accommodating portion 105, and the other end is rotatably connected to the second accommodating cavity, wherein when the connecting rod assembly 300 is in a folded state, the box mounting seat 100 is adapted to the door connecting seat 200, so that the first accommodating portion 105 and the second accommodating portion 201 completely wrap the connecting rod assembly 300.

By using the hinge provided by the embodiment of the present invention, the box mounting seat 100 and the door body connecting seat 200 are both configured as U-shaped seats, and the first accommodating portion 105 and the second accommodating portion 201 are respectively arranged inside thereof. When the door body connecting seat 200 is adapted to be connected with the box mounting seat 100, the first accommodating portion 105 and the second accommodating portion 201 can be used to accommodate and wrap the entire connecting rod assembly 300. On the one hand, the bottom side of the first accommodating portion 105 can be used to support the connecting rod assembly 300 to prevent the connecting rod assembly 300 from being deformed due to long-term force when the door body is closed. On the other hand, the connecting rod assembly 300 is clamped as a whole in the first accommodating portion 105 and the second accommodating portion 201, which can fix the connecting rod assembly 300 and prevent the connecting rod assembly 300 from shaking, thereby improving the overall stability of the hinge.

Optionally, the rear side wall of the box mounting seat 100 is provided with mounting holes for fixing the box mounting seat 100 on the box, wherein the rear side wall of the box mounting seat 100 refers to the side wall opposite to the opening of the first accommodating portion 105. In this way, it is convenient to install the box and connect it to the box, and it does not occupy other space, thereby reducing the space occupied by the hinge.

Optionally, one of the connecting rods in the connecting rod assembly 300 is clamped in the middle of the paired slide grooves 101, and the same pin shaft 103 penetrates the two slide grooves 101 and the connecting rod, so that the connecting rod is limited to slide along the slide groove 101. In this way, the connecting rod is limited to slide in the slide groove 101 by the pin shaft 103, and both ends of the pin shaft 103 simultaneously penetrate the slide grooves 101 on both sides, so that the two ends of the pin shaft 103 can be fixed, and the stability of the pin shaft 103 sliding along the slide groove 101 is improved. In addition, the connection with the pin shaft 103 can not only make the connecting rod slide along the slide groove 101, but also the connecting rod itself can rotate in the slide groove 101 along with the pin shaft 103, so as to improve the stability of the connection between the connecting rod and the slide groove 101.

Optionally, the depth of the first receiving portion 105 is greater than the depth of the second receiving portion 201. In this way, due to the weight of the door body The force is transmitted through the connecting rod assembly 300 and finally acts on the box mounting seat 100. Therefore, when the door is closed, the box mounting seat 100 also serves as the main load-bearing position. The depth of the first accommodating portion 105 is set to be greater than the depth of the second accommodating portion 201. As much as possible, the connecting rod assembly 300 can be accommodated in the first accommodating portion 105, so that the first accommodating portion 105 can be used to better support the connecting rod assembly 300, reduce the force on the connecting rod assembly 300, prevent the connecting rod assembly 300 from being deformed due to long-term force, improve the overall stability of the hinge, and better bear the weight of the door when the door is closed.

It can be understood that the first accommodation portion 105 and the second accommodation portion 201 are collectively referred to as accommodation portions, and the depth of an accommodation portion refers to the distance between its opening and the inner side wall opposite to the opening.

Optionally, a matching load-bearing structure 500 is provided between the box mounting seat 100 and the door connecting seat 200. In this way, the box mounting seat 100 and the door connecting seat 200 are connected by the matching load-bearing structure 500, and the force on the door connecting seat 200 is directly transmitted to the box mounting seat 100, thereby reducing the force on the connecting rod assembly 300, and preventing the connecting rod assembly 300 from being deformed due to long-term force, resulting in problems such as door shaking.

Optionally, the supporting load-bearing structure 500 includes: a load-bearing groove 501 and a load-bearing protrusion 502. The load-bearing groove 501 is provided on the box body mounting seat 100; the load-bearing protrusion 502 is provided on the door body connecting seat 200, and can be adapted to be connected with the load-bearing groove 501, so that the box body mounting seat 100 forms a supporting effect on the door body connecting seat 200. In this way, when the door body is closed, the door body connecting seat 200 is opposite to the box body mounting seat 100, so that the load-bearing protrusion 502 provided on the door body connecting seat 200 is inserted into the load-bearing groove 501 of the box body mounting seat 100, and the force on the door body connecting seat 200 is directly transmitted to the box body mounting seat 100 through the load-bearing protrusion 502, thereby reducing the force on the connecting rod assembly 300.

Optionally, a right-angle connecting piece 202 is provided on the door body connecting seat 200, one side of the right-angle connecting piece 202 is detachably connected to the door body connecting seat 200, and the other side is used to fix the door body. In this way, the right-angle connecting piece 202 can better fix the side of the door body, so that the door body can be better contacted with the box body without being blocked by the hinge, and the door body and the box body can be kept in close contact.

As shown in FIGS. 5-6 , optionally, the connecting rod assembly 300 includes: a first connecting rod 301 , a second connecting rod 302 and a third connecting rod 303 .

Optionally, one end of the first connecting rod 301 is rotatably and slidably connected to the box mounting seat 100; the second connecting rod 302 is hinged to the box mounting seat 100, and its middle area is hinged to the middle area of the first connecting rod 301; the third connecting rod 303 is hinged to one end of the second connecting rod 302. In this way, three connecting rods are arranged between the box mounting seat 100 and the door connecting seat 200 to realize the opening or closing of the door connecting seat 200 relative to the box mounting seat 100.

Optionally, one of the connecting rods in the connecting rod assembly 300 is slidably connected to the box mounting seat 100. For example, one end of the first connecting rod 301 is rotatably and slidably connected to the box mounting seat 100, and one end of the second connecting rod 302 is hinged to the box mounting seat 100.

In this way, by setting one end of the first connecting rod 301 to be rotatably and slidably connected to the box mounting seat 100, during the hinge unfolding process, one end of the first connecting rod 301 slides, so that the other end of the first connecting rod 301 can be displaced accordingly. When the other end of the connecting rod 301 is connected to the door body, the door body can be driven away from the cabinet body. When used in a built-in refrigerator, the door body can be effectively prevented from colliding with obstacles in the cabinet body. Compared with the solution in the prior art that uses six connecting rods to drive the door body away from the cabinet body, at least one connecting rod and two hinge points can be reduced, which directly reduces the number of connecting rods and reduces the thickness of the staggered and stacked connecting rods. It can solve the problem of hinge thickness in the most direct and fundamental way, and can effectively reduce the thickness of the installation connection while ensuring the same door opening trajectory, so as to avoid the waste of the overall volume of the refrigerator or the most convenient area due to its large thickness. At the same time, reducing the thickness also helps to make the overall structure of the refrigerator more symmetrical and coordinated.

It can be understood that the rotational sliding connection between one end of the first connecting rod 301 and the box mounting base 100 means that one end of the first connecting rod 301 can slide along the box mounting base 100, and the first connecting rod 301 can rotate relative to the point where it is connected to the box mounting base 100.

Optionally, the hinge further comprises: a door body connection seat 200. The other ends of the first connecting rod 301 and the third connecting rod 303 are both hinged to the door body connection seat 200. In this way, the hinge can be better connected to the door body through the door body connection seat 200, which is convenient for installation and can better fix the ends of the first connecting rod 301 and the third connecting rod 303.

Optionally, a slide groove 101 is provided on the box mounting seat 100, and one end of a connecting rod in the connecting rod assembly 300 can slide along the slide groove 101. In this way, by installing the slide groove 101 on the box mounting seat 100, one end of the first connecting rod 301 slides along the slide groove 101, and the stability of the sliding of the first connecting rod 301 can be maintained. The form of providing the slide groove 101 does not occupy additional space, which is conducive to reducing the thickness of the entire hinge, and avoiding the situation where the overall volume of the refrigerator or the most convenient area is wasted due to the large thickness.

Optionally, a slide groove 101 is provided on the box mounting base 100 , and one end of the first connecting rod 301 can slide along the slide groove 101 .

Optionally, a slide groove 101 is provided on the box mounting seat 100 , and one end of the first connecting rod 301 is limited to slide in the slide groove 101 and is rotatable relative to the slide groove 101 .

Optionally, a slider 102 is provided in the slide groove 101, and the slider 102 is limited to slide along the slide groove 101, and one end of the first connecting rod 301 is rotatably connected to the slider 102. In this way, the first connecting rod 301 slides along the slide groove 101 through the slider 102, and the first connecting rod 301 is rotatably connected to the slider 102, which not only makes the sliding process of the first connecting rod 301 more stable and smooth, avoids the situation that the first connecting rod 301 directly slides on the slide groove 101 and causes sliding jamming, and ensures the continuity and stability of the sliding process, but also utilizes the flexible connection between the first connecting rod 301 and the slider 102, and in the process of the slider 102 driving the first connecting rod 301 to slide, the relative position between the first connecting rod 301 and the slider 102 can be adjusted at any time by using the rotation connection, which further enhances the stability of the sliding process of the first connecting rod 301, and ensures that the first connecting rod 301 can smoothly and stably open or close the door body connecting seat 200.

Optionally, the slide grooves 101 are arranged in pairs and are respectively located on the upper and lower sides of the box mounting seat 100. In this way, the slide grooves 101 are arranged on both sides of the box mounting seat 100, so that both ends of the first connecting rod 301 are limited to slide in the slide grooves 101. The sliding stability of the first connecting rod 301 can be improved, and the fixing force applied to the first connecting rod 301 from both sides can better provide the fixing force for the first connecting rod 301, so that the force on the first connecting rod 301 can be better transmitted to the box mounting seat 100, thereby improving the load-bearing capacity of the entire hinge and maintaining the stability of the hinge.

Optionally, the slide groove 101 may penetrate the side wall of the box mounting seat 100, or may be an embedded groove arranged on the inner side wall of the box mounting seat 100, and may not penetrate the box mounting seat 100. Preferably, the slide groove 101 penetrates the side wall of the box mounting seat 100. In this way, it is convenient to fix one end of the first connecting rod 301 by installing the pin shaft 103 from the outer side wall of the box mounting seat 100, so that it slides along the slide groove 101, reducing the difficulty of installation.

Optionally, both upper and lower side surfaces of the box mounting base 100 are provided with sliding grooves 101 , and one end of the first connecting rod 301 is simultaneously confined in the sliding grooves 101 on both upper and lower side surfaces of the box mounting base 100 .

It can be understood that the slide grooves 101 arranged on the upper and lower sides of the box mounting base 100 are correspondingly arranged and overlap in the vertical direction, and their function is to limit the upper and lower sides of one end of the first connecting rod 301 at the same time to maintain the sliding stability of the first connecting rod 301.

Optionally, the slide slot 101 is tilted. In this way, the slide slot 101 can be set more reasonably, ensuring that the first connecting rod 301 can open or close the door body connecting seat 200 more smoothly when sliding along the slide slot 101. At the same time, the slide slot 101 is tilted, which is more convenient to control the safety gap between the refrigerator door and obstacles during the opening process, avoiding collisions with obstacles, improving the protection of the refrigerator while ensuring the stability of the refrigerator opening process, and ensuring the opening angle of the door body connecting seat 200, making it more convenient for users to take items into the refrigerator, and bringing better user experience.

It can be understood that the inclined arrangement of the slide groove 101 means that one end of the slide groove 101 is close to the rear side wall of the box mounting seat 100 , and the other end thereof is close to the front side wall of the box mounting seat 100 .

Optionally, the inclination angle of the slide groove 101 is proportional to the distance from the box mounting seat 100 when the door body connection seat 200 is fully opened. In this way, in order to meet the use requirements of the built-in refrigerator scene, the distance from the box mounting seat 100 when the door body connection seat 200 is fully opened needs to meet certain requirements to ensure the normal opening and closing of the refrigerator door, so that the inclination angle of the slide groove 101 is reasonably set when the door body connection seat 200 is fully opened and the distance from the box mounting seat 100, that is, when the distance is large, the inclination angle of the slide groove 101 is increased, and vice versa, when the distance is small, the inclination angle of the slide groove 101 is reduced, thereby reducing the influence of the wall or other obstacles on the opening process of the door body connection seat 200, avoiding the situation where the wall or other obstacles hinder the rotation and opening of the door body connection seat 200, so that the built-in refrigerator can be opened smoothly, improving the convenience of user use, and bringing a better user experience.

Optionally, when the length of the slide groove 101 is constant, the inclination angle of the slide groove 101 and the distance from the box mounting seat 100 when the door connecting seat 200 is fully opened satisfy the following relationship:

y1＝0.06α ³ −0.06α ² +1.84α+95.51, wherein y1 is the distance between the door connecting seat 200 and the box mounting seat 100 when the door connecting seat 200 is fully opened, α is the inclination angle of the slide slot 101, and 0°≤α≤90°.

In this way, based on the inclination angle of the slide groove 101 and using the above-mentioned calculation formula, the distance between the door body connecting seat 200 and the box body mounting seat 100 when the door body connecting seat 200 is fully opened can be accurately calculated. Therefore, when the refrigerator is installed in an embedded manner, the front displacement of the door body connecting seat 200 can be accurately calculated using the above-mentioned formula according to the use requirements of the embedded refrigerator scene, thereby facilitating more reasonable planning of the installation of the refrigerator, meeting the use requirements of the embedded refrigerator scene, and making the installed refrigerator more convenient for users to use.

Optionally, the length of the slide groove 101 is proportional to the angle at which the door body connection seat 200 can be opened relative to the box body mounting seat 100. In this way, in order to meet the user's need for convenient access, the opening angle of the door body connection seat 200 needs to be as large as possible, and the length of the slide groove 101 is proportional to the opening angle of the door body connection seat 200, so as to reasonably set the opening angle of the door body connection seat 200 according to the length of the slide groove 101, so as to facilitate the user to take items into and out of the refrigerator, improve the convenience of access, and enhance the user's experience.

Optionally, when the inclination angle of the slide groove 101 is constant, the length of the slide groove 101 and the angle at which the door body connecting seat 200 can be opened relative to the box body mounting seat 100 satisfy the following relationship:

y2＝0.002l1 ³ −0.24l1 ² +9.98l1−71.72, wherein y2 is the opening angle of the door connecting seat 200 relative to the box mounting seat 100 , and l1 is the length of the sliding groove 101 .

In this way, according to the length of the slide groove 101 and using the above-mentioned calculation formula, the opening angle of the door body connecting seat 200 relative to the box body mounting seat 100 can be accurately calculated. Therefore, according to the user's usage requirements and the installation space of the refrigerator, by reasonably setting the length of the slide groove 101, the opening angle of the door body connecting seat 200 can be controlled within a more reasonable range, which not only makes it easier for users to take items into and out of the refrigerator and improves the convenience of storage and access, but also reduces the impact of obstacles on the opening process of the refrigerator door, avoids collisions with obstacles during opening, and meets the usage requirements of the refrigerator when it is installed in a specific installation scenario.

Optionally, the length between the two connection points on the door body connection seat 200 is inversely proportional to the angle at which the door body connection seat 200 can be opened relative to the cabinet mounting seat 100. In this way, the greater the length between the two connection points on the door body connection seat 200, the smaller the angle at which the door body connection seat 200 can be opened, and conversely, the smaller the length between the two connection points on the door body connection seat 200, the larger the angle at which the door body connection seat 200 can be opened. Since the opening angle of the door body connection seat 200 needs to be as large as possible to meet the user's need for convenient access, the opening angle of the door body connection seat 200 can be reasonably set according to the length between the two connection points on the door body connection seat 200, so as to facilitate the user to take items into the refrigerator and improve the convenience of access.

Optionally, the length between the two connection points on the door body connection seat 200 and the angle at which the door body connection seat 200 can be opened relative to the box body mounting seat 100 satisfy the following relationship:

y2＝0.01l2 ⁴ −0.25l2 ³ +21.85l2 ² −841.66l2+12497.59, wherein y2 is the opening angle of the door connecting seat 200 relative to the box mounting seat 100 , and l2 is the length between two connection points on the door connecting seat 200 .

In this way, according to the length between the two connection points on the door body connecting seat 200 and using the above-mentioned calculation formula, the opening angle of the door body connecting seat 200 relative to the cabinet mounting seat 100 can be accurately calculated. Therefore, according to the user's usage requirements and the installation space of the refrigerator, by reasonably setting the length between the two connection points on the door body connecting seat 200, the opening angle of the door body connecting seat 200 can be controlled within a more reasonable range, which not only makes it easier for users to access items in the refrigerator and improves the convenience of access, but also reduces the impact of obstacles on the opening process of the refrigerator door, avoids collision with obstacles during opening, and meets the usage requirements of the refrigerator when it is installed in a specific installation scenario.

Optionally, the distance between the connection point between the second connecting rod 302 and the cabinet mounting seat 100 and the side of the cabinet mounting seat 100 is proportional to the horizontal length between the side of the cabinet mounting seat 100 and the side of the door body connecting seat 200. In this way, in order to ensure that important use areas such as drawers in the refrigerator can be pulled out and used normally when the refrigerator is placed against the wall, the horizontal length between the side of the cabinet mounting seat 100 and the side of the door body connecting seat 200 when the door body connecting seat 200 is opened to 10° is crucial. The horizontal length of the two needs to be as small as possible to ensure that the drawer can be pulled out and used smoothly. Therefore, by using the proportional relationship, the horizontal length between the side of the cabinet mounting seat 100 and the side of the door body connecting seat 200 can be set more reasonably, reducing the impact on the most convenient area for refrigerator use and improving the convenience of refrigerator use.

Optionally, the length of the connection point between the second connecting rod 302 and the box mounting seat 100 and the side of the box mounting seat 100 and the horizontal length between the side of the box mounting seat 100 and the side of the door connecting seat 200 satisfy the following relationship:

y3＝0.001l3 ⁴ −0.01l3 ³ −2.34l3 ² +25.59l3−5.49, wherein y3 is the horizontal length between the side of the box mounting base 100 and the side of the door connecting base 200 , and l3 is the length from the connection point between the second connecting rod 302 and the box mounting base 100 to the side of the box mounting base 100 .

In this way, according to the length of the connection point between the second connecting rod 302 and the box mounting seat 100 and the side of the box mounting seat 100 and using the above-mentioned calculation formula, the horizontal length between the side of the box mounting seat 100 and the side of the door body connecting seat 200 can be accurately calculated, and the horizontal length between the box mounting seat 100 and the door body connecting seat 200 can be set within a reasonable range to ensure that the drawer can be pulled out and used normally when the refrigerator is placed against the wall, thereby avoiding more serious waste of the most convenient area for use of the refrigerator.

It can be understood that the horizontal length between the side of the box mounting seat 100 and the side of the door body connecting seat 200 refers to the horizontal distance between the front side of the door body connecting seat 200 and the side wall of the box mounting seat 100 when the door body connecting seat 200 is opened to 90°.

Optionally, the length of the leftward displacement of the intersection point between the first connecting rod 301 and the second connecting rod 302 is inversely proportional to the horizontal length between the side of the box mounting seat 100 and the side of the door connecting seat 200, and satisfies the following relationship:

y3＝0.002l4 ³ +0.29l4 ² −24.42l4+838.81, wherein y3 is the horizontal length between the side of the box mounting seat 100 and the side of the door connecting seat 200 , and l4 is the length of the intersection point between the first connecting rod 301 and the second connecting rod 302 shifted to the left.

In this way, in order to ensure that important use areas such as drawers inside the refrigerator can be pulled out and used normally when the refrigerator is placed against the wall, the horizontal length between the side of the box mounting seat 100 and the side of the door connecting seat 200 when the door connecting seat 200 is opened to 90° is crucial. The horizontal length between the two needs to be as small as possible to ensure that the drawer can be pulled out and used smoothly. Therefore, the proportional relationship is utilized to facilitate the reasonable setting of the horizontal length between the side of the box mounting seat 100 and the side of the door connecting seat 200 according to the length of the left displacement of the intersection point between the first connecting rod 301 and the second connecting rod 302, thereby reducing the impact on the most convenient area for use of the refrigerator, improving the convenience of using the refrigerator, and bringing a better user experience to users.

As shown in FIG6 , optionally, the side of the slide groove 101 is an inclined surface. In this way, by setting the side of the slide groove 101 as an inclined surface, the side of the slide groove 101 can form a funnel-like effect, which has a gathering effect, and when combined with the fixing part of the pin shaft 103 which also has an inclined surface, it can play a certain positioning role, so that the pin shaft 103 can slide more smoothly along the slide groove 101, and the fixing parts at both ends of the pin shaft 103 can be partially sunken like a groove, further reducing the overall thickness of the hinge.

Optionally, a slider 102 is provided in the slide groove 101, and the slider 102 is limited to slide along the slide groove 101, and one end of the first connecting rod 301 is rotatably connected to the slider 102. In this way, the first connecting rod 301 slides along the slide groove 101 through the slider 102, and the first connecting rod 301 is rotatably connected to the slider 102, which not only makes the sliding process of the first connecting rod 301 more stable and smooth, avoids the situation that the first connecting rod 301 directly slides on the slide groove 101 and causes sliding jamming, and ensures the continuity and stability of the sliding process, but also utilizes the flexible connection between the first connecting rod 301 and the slider 102, and in the process of the slider 102 driving the first connecting rod 301 to slide, the relative position between the first connecting rod 301 and the slider 102 can be adjusted at any time by using the rotation connection, which further enhances the stability of the sliding process of the first connecting rod 301, and ensures that the first connecting rod 301 can smoothly and stably open or close the door body connecting seat 200.

Optionally, the slider 102 includes a pin 103 and a pin fixing portion 104, wherein the pin 103 passes through the slide groove 101 and the end of the first connecting rod 301, and the two ends of the pin 103 are limited by the pin fixing portion 104, so that the pin 103 and the pin fixing portion 104 can stably slide along the slide groove 101. In this way, the end of the first connecting rod 301 can be better fixed, and the pin 103 passes through the slide groove 101, so that the first connecting rod 301 can slide in the slide groove 101 along with the pin 103, and can also rotate along the pin 103, thereby increasing the flexibility of the first connecting rod 301.

Optionally, a pin fixing portion 104 is installed on the portion where the end of the pin 103 passes through the slide slot 101, and the pin fixing portion 104 is an inverted platform-shaped structure, and the inclination angle of its side is the same as the inclination angle of the inclined surface. In this way, the pin fixing portion 104 can better cooperate with the slide slot 101 and can slide along the slide slot 101 stably.

Optionally, the pin fixing portion 104 is completely recessed and installed in the slide groove 101. In this way, the pin fixing portion 104 can be prevented from protruding and affecting the thickness of the box mounting seat 100, further reducing the thickness of the entire hinge.

As shown in Figures 7-8, the embodiment of the present disclosure provides a hinge, including: a first link 301, a second link 302 and a third link 303. The middle area of the second link 302 is hinged to the middle area of the first link 301. The first link 301 and the second link 302 are both sheet-shaped structures, and the surfaces of the hinged connection between the two are in contact with each other; the third link 303 and the second link One end of the rod 302 is hinged, and the second connecting rod 302 is provided with a limiting groove 304 extending from the hinge point.

In this way, the first connecting rod 301 and the second connecting rod 302 intersect with each other and jointly bear the weight of the refrigerator door body. Both are set to a sheet-shaped structure, and the surfaces of the two are directly in contact with each other. The purpose of reducing the thickness of the entire hinge is achieved by reducing the thickness of each of them and the gap between them. The first connecting rod 301 and the second connecting rod 302 are in contact with each other to increase the contact area between the two, so that the entire contact surface can be subjected to force and the support is improved, thereby maintaining the normal support effect of the hinge and reducing the overall thickness of the hinge.

It can be understood that the first connecting rod 301 , the second connecting rod 302 and the third connecting rod 303 are collectively referred to as a connecting rod assembly 300 .

Optionally, the first connecting rod 301, the second connecting rod 302 and the third connecting rod 303 are all solid structures. In this way, the first connecting rod 301, the second connecting rod 302 and the third connecting rod 303 are all set to solid structures, so that they can maintain sufficient supporting force while reducing their thickness, so that the hinge as a whole has sufficient bearing effect and prevents deformation and damage.

Optionally, the first link 301 and the second link 302 have the same thickness, and the third link 303 has a thickness greater than the first link 301. In this way, the first link 301 and the second link 302 have the same thickness and the same load-bearing capacity, and can cooperate with each other to better share the weight they bear when they are connected, so that they can maintain a minimum thickness when the load-bearing capacity is sufficient. Since one end of the third link 303 needs to be connected to the second link 302, the connection point of the link is suspended in the air without support and needs to be more stable to provide good support. Therefore, the thickness of the third link 303 is set to be greater than the thickness of the first link 301 and the second link 302, so that it can be connected to the second link 302 by clamping, thereby improving the stability of the link connection and further improving the overall load-bearing capacity of the hinge.

Optionally, the length of the third link 303 is smaller than the first link 301 and the second link 302. In this way, when the link is in the storage state, the third link 303 will be folded and close to the first link 301 and the second link 302, and one end of the first link 301 and one end of the third link 303 are used to connect the door body, so the length of the third link 303 is set to be smaller than the length of the first link 301 and the second link 302, so that after folding, one end of the third link 303 maintains a sufficient distance from one end of the first link 301, and then, the two points used to connect the door body have enough gaps, better balance of the holding force, and improve the overall support capacity of the hinge.

As shown in Figures 5-8, the embodiment of the present disclosure provides a hinge including: a box mounting seat 100, a door body connecting seat 200 and a connecting rod assembly 300. The connecting rod assembly 300 includes a plurality of sheet-shaped connecting rods, one end of some connecting rods is rotatably connected to the box mounting seat 100, one end of some connecting rods is rotatably connected to the door body connecting seat 200, and one end of at least one connecting rod is provided with a clamping groove 305, and the clamping groove 305 clamps one end of another connecting rod and is rotatably connected thereto.

Optionally, at least one of the connecting rods in the connecting rod assembly 300 is provided with a clamping groove 305 at one end, and the clamping groove 305 clamps one end of another connecting rod and is rotatably connected thereto. In this way, the connecting rod is set as a sheet-shaped structure, which can reduce the thickness of the hinge as a whole. The position where the connecting rods are connected to each other in the hinge becomes a suspended connection point. This position is not connected to the box mounting seat 100 or the door body connecting seat 200, and is subjected to greater force. Therefore, a clamping groove 305 is provided at one end of one of the connecting rods for clamping. One end of the other connecting rod can improve the stability of the connection at that position, so that that position can withstand greater force, prevent the connection position between the connecting rods from being deformed or shaking due to force, improve the stability of the connection between the connecting rods, and thus maintain the overall load-bearing capacity of the hinge.

Optionally, the clamping groove 305 is a groove provided on the connecting rod, and its outer side wall is flush with the connecting rod surface. In this way, the position where the groove is provided on the connecting rod will not protrude from the surface of the connecting rod, thereby preventing the thickness of the hinge from being affected as a whole.

Optionally, one end of the connecting rod clamped in the clamping groove 305 is arc-shaped. In this way, the connecting rod can be prevented from getting stuck on the inner wall of the clamping groove 305 when rotating in the clamping groove 305, thereby improving the smoothness of the rotation between the two connecting rods.

Optionally, the clamping groove 305 is provided on the third connecting rod 303. In this way, since the first connecting rod 301 and the second connecting rod 302 are hinged to each other and the two are staggered in a stacked state, the thickness of the two superimposed is relatively large, and the clamping groove 305 needs to clamp one connecting rod, so the thickness of the setting position needs to be relatively large, and the third connecting rod 303 does not need to be staggered with the first connecting rod 301, so the clamping groove 305 is provided on the third connecting rod 303, which can make full use of the side space of the first connecting rod 301 and the second connecting rod 302, and will not increase the overall thickness of the connecting rod assembly 300 too much, so as to keep the hinge thin as a whole and reduce the space occupied by the hinge.

Optionally, the second connecting rod 302 is provided with a limiting groove 304 extending from the connection point between the second connecting rod 302 and the third connecting rod 303. In this way, when the connecting rod assembly 300 is folded, the second connecting rod 302 and the third connecting rod 303 will partially overlap. The limiting groove 304 is provided on the second connecting rod 302. On the one hand, the position of the third connecting rod 303 can be limited to prevent it from being too close to the second connecting rod 302, causing the connecting rods to be stuck to each other. On the other hand, a certain storage space is freed up for the third connecting rod 303, which can further reduce the thickness of the overall connecting rod assembly 300.

Optionally, the side of the limiting groove 304 has the same profile as the side of the third connecting rod 303. In this way, when the third connecting rod 303 and the second connecting rod 302 are close together, the side of the third connecting rod 303 can be completely attached to the side of the limiting groove 304, maintaining the stability of the third connecting rod 303 and the second connecting rod 302 being closed and fitted.

Optionally, a wear-resistant sheet 400 is provided between the surfaces of the first connecting rod 301 and the second connecting rod 302 that are in contact with each other. In this way, after the wear-resistant sheet 400 is provided, the first connecting rod 301 and the second connecting rod 302 can be installed more closely, so that the contact surface between the first connecting rod 301 and the second connecting rod 302 is larger, the stability of the connection between the two is improved, and the two can support each other and better share the load-bearing force required by them. In addition, the wear-resistant sheet 400 can reduce the wear between the first connecting rod 301 and the second connecting rod 302, prevent the wear caused by long-term use, cause the gap between the two to expand, affect the normal use of the hinge, and improve the service life of the hinge.

Optionally, the wear-resistant sheet 400 includes: a gasket-type wear-resistant sheet 401. The gasket-type wear-resistant sheet 401 is clamped between the connection points where the connecting rods are rotatably connected to each other. In this way, the gasket-type wear-resistant sheet 401 is arranged between two connecting rods connected to each other, so that the wear-resistant sheet 400 itself can rotate relative to the two connecting rods, which can further increase the resistance to rotation between the two connecting rods, improve the smoothness of the mutual rotation between the connecting rods, and also have a good wear resistance effect.

Optionally, the gasket-type wear-resistant sheet 401 is a circular thin sheet. In this way, the wear-resistant sheet 400 can be better rotated between the two connecting rods, and the edges and corners are smooth to prevent wear on the connecting rods, further improve the wear resistance, and have good lubricity.

Optionally, the diameter of the gasket-type wear-resistant sheet 401 is the same as the width of the connecting rod. In this way, the supporting effect of the connecting rod located at the lower side on the connecting rod located at the upper side can be improved, and the contact area of the gasket-type wear-resistant sheet 401 is prevented from being too small, causing uneven force on the connecting rod and causing damage, thereby improving the overall effect of the hinge.

Optionally, the wear-resistant sheet 400 is made of copper sheet material. In this way, the copper material itself is relatively smooth and has good wear resistance, which can effectively reduce wear and tear, and make the rotation between the connecting rods, and between the connecting rods and the box mounting seat 100 and the door body connecting seat 200 smoother.

Optionally, the first link 301 and the second link 302 have the same length, and the center points of the two are hinged to each other. In this way, since the first link 301 and the second link 302 are hinged during the hinge load-bearing process, the two need to cooperate with each other to bear the weight together, so setting the first link 301 and the second link 302 to have the same length can make the force more evenly distributed on the two, thereby improving the overall supporting force. At the same time, the center of the two is hinged, and the four sides of the hinge point are equal in length, which is also for the purpose of balancing the force and better dispersing the load-bearing force.

Optionally, the third connecting rod 303 has a bending section 306. In this way, the bending section 306 is provided on the third connecting rod 303 so that when the third connecting rod 303 is folded relative to the second connecting rod 302, it can maintain a certain distance from the second connecting rod 302, thereby preventing the second connecting rod 302 and the third connecting rod 303 from being stuck to each other when the hinge is stored, thereby affecting the normal operation of the hinge.

Optionally, the first connecting rod 301 and the second connecting rod 302 are both straight bar structures. In this way, after the first connecting rod 301 and the second connecting rod 302 are hinged, the displacements of the two ends of the two connecting rods are kept consistent, so as to better control the running track of the door body opening.

Optionally, the bending section 306 on the third link 303 is arranged at one end where the third link 303 is connected to the second link 302. In this way, the third link 303 can be bent to one side at the connection with the second link 302, and when it is folded close to the second link 302, it keeps a certain distance from the second link 302, so as to prevent the second link 302 and the third link 303 from being stuck to each other and affecting the normal operation of the hinge.

Optionally, the other end of the first connecting rod 301 and the other end of the third connecting rod 303 are both rotatably connected to the door body connecting seat 200. In this way, the door body connecting seat 200 is fixed by the other ends of the first connecting rod 301 and the third connecting rod 303, and the stability of the door body connecting seat 200 can be maintained.

Optionally, a slide groove 101 is provided on the cabinet mounting seat 100, and one end of a connecting rod in the connecting rod assembly 300 is limited to slide along the slide groove 101. By setting one end of the connecting rod to be rotatably and slidably connected to the cabinet mounting seat 100, during the unfolding of the hinge, one end of the connecting rod slides, and the other end of the connecting rod moves accordingly. When the other end of the connecting rod is connected to the door body, the door body can be driven away from the cabinet, which can effectively prevent the door body from colliding with obstacles in the cabinet when used in a built-in refrigerator. Compared with the solution in the prior art that uses six connecting rods to drive the door body to move away from the cabinet, At least one connecting rod and two hinge points can be eliminated, which directly reduces the number of connecting rods and reduces the thickness of the staggered and stacked connecting rods. This can solve the problem of hinge thickness in the most direct and fundamental way. It can effectively reduce the thickness of the installation connection while ensuring the same door opening trajectory, and can avoid the waste of the overall volume of the refrigerator or the most convenient area due to its large thickness. At the same time, reducing the thickness also helps to make the overall structure of the refrigerator more symmetrical and coordinated.

Optionally, the cross section of the box mounting seat 100 is U-shaped, and a receiving portion is defined in the middle. In this way, the cross section of the box mounting seat 100 is designed to be U-shaped, which can form a concave receiving portion, thereby better fixing one end of the connecting rod assembly 300, and clamping the connecting rod assembly 300 from both sides, which can better share the force transmitted on the clamping assembly, reduce the force on the rotating connection, improve the load-bearing capacity of the connecting rod assembly 300, and maintain the overall stability of the hinge.

It can be understood that during installation, the U-shaped opening, that is, the opening of the accommodating portion, faces the door body, and the back side thereof is used for connecting to the box body.

As shown in Figures 1-4, in some embodiments, the box mounting seat 100 is a U-shaped seat, defining a first accommodating portion 105; the door body connecting seat 200 is a U-shaped seat, defining a second accommodating portion 201; one end of the connecting rod assembly 300 is rotatably connected to the first accommodating portion 105, and the other end is rotatably connected to the second accommodating cavity, wherein when the connecting rod assembly 300 is in a retracted state, the box mounting seat 100 is adapted to the door body connecting seat 200, so that the first accommodating portion 105 and the second accommodating portion 201 completely wrap the connecting rod assembly 300.

As shown in FIG9 , in some embodiments, the box mounting seat 100, the door body connecting seat 200 and the connection of the connecting rod are all provided with a wear-resistant sheet 400 to reduce wear. In this way, the connection between some connecting rods in the connecting rod assembly 300 where they are rotatably connected to each other, the connection between some connecting rods and the box mounting seat 100, and the connection between some connecting rods and the door body connecting seat 200 are all provided with a wear-resistant sheet 400. The wear-resistant sheet 400 is used to fill the connection gap. When the connecting rod, the box mounting seat 100 and the door body connecting seat 200 rotate, it plays a role of lubrication and wear resistance, reduces the wear between each other, improves the stability of the rotation of each position, prevents the connecting rod from shaking, maintains the bearing capacity of the hinge, and improves the stability and durability of the hinge.

In other embodiments, in combination with FIGS. 1-6, 9-10, the embodiment of the present disclosure provides a hinge including: a box body mounting seat 100, a door body connecting seat 200, a connecting rod assembly 300 and a wear-resistant sheet 400. The connecting rod assembly 300 includes a plurality of sheet-shaped connecting rods, some of which are rotatably connected to each other, one end of some of the connecting rods is rotatably connected to the box body mounting seat 100, and one end of some of the connecting rods is rotatably connected to the door body connecting seat 200; the wear-resistant sheet 400 is provided at the connection between the box body mounting seat 100, the door body connecting seat 200 and the connecting rod to reduce wear.

Optionally, the wear-resistant sheet 400 includes: a wrapped wear-resistant sheet 402. The wrapped wear-resistant sheet 402 is wrapped around the end of the connecting rod connected to the box mounting seat 100 and the door connecting seat 200. In this way, the end of the connecting rod can be fully wrapped, reducing the friction between the end of the connecting rod and the box mounting seat 100 and the door connecting seat 200, reducing the wear of the connecting rod, the box connecting seat and the door connecting seat 200, and adopting a wrapped design, the wear-resistant sheet 400 can be better attached to the end of the connecting rod, preventing the wear-resistant sheet 400 from being displaced, affecting normal use, and causing hinge shaking.

Optionally, the wrapped wear-resistant sheet 402 is connected to the connecting rod by an adhesive, so that the wear-resistant sheet 400 can be further fixed to the connecting rod to prevent the wear-resistant sheet 400 from falling off, thereby improving the stability of the hinge during use.

Optionally, the slider 102 is also coated with a wear-resistant sheet 400. In this way, since the slider 102 is also easily worn when sliding in the chute 101, the slider 102 is coated with a wear-resistant sheet 400, which can effectively reduce the wear between the slider 102 and the chute 101.

Optionally, the slider 102 is wrapped with a wear-resistant sheet 400, which means that the side surfaces of the pin 103 and the pin fixing portion 104 are wrapped with a wear-resistant sheet 400. In this way, the wear of sliding along the slide groove 101 and the wear of the first connecting rod 301 rotating along the pin 103 can be avoided, the connecting rod assembly 300 is better protected, and the overall stability of the hinge is improved.

As shown in FIG. 10 , in some embodiments, the ends of the connecting rods rotatably connected to the box mounting base 100 and the door connecting base 200 are both constructed with protrusions 307 extending outwardly perpendicular to the surface of the connecting rod.

As shown in Figures 5-10, the embodiment of the present disclosure provides a hinge including: a box mounting seat 100, a door body connecting seat 200 and a connecting rod assembly 300. The box mounting seat 100 is a U-shaped seat, defining a receiving portion; the door body connecting seat 200 is also a U-shaped seat; the connecting rod assembly 300 includes a plurality of sheet-shaped connecting rods, one end of some connecting rods is rotatably connected to the box mounting seat 100, and one end of some connecting rods is rotatably connected to the door body connecting seat 200. The ends of the connecting rods rotatably connected to the box mounting seat 100 and the door body connecting seat 200 are both constructed with protrusions 307 that protrude outwards perpendicular to the surface of the connecting rod.

In this way, a protrusion 307 is provided at one end of the connecting rod and the box mounting seat 100 and the door body connecting seat 200, so that the side of the connecting rod can contact the inner wall of the box mounting seat 100 and the door body connecting seat 200 to expand the contact area. The box mounting seat 100 and the door body connecting seat 200 are used to clamp the connecting rod, and the weight borne by the connecting rod is better transferred to the box mounting seat 100 and the door body connecting seat 200, thereby better protecting the connecting rod, reducing the force on the connecting rod, and preventing the connecting rod from deforming. Through this structural design, after using a sheet-shaped connecting rod to reduce the overall hinge, the overall bearing capacity of the hinge can be maintained, thereby improving the stability of the hinge.

Optionally, the sum of the thickness of the connecting rod and the protrusion 307 provided thereon is adapted to the thickness of the inner cavity of the U-shaped seat where it is installed. In this way, the connecting rod and the protrusion 307 can fill the space between the upper and lower side walls of the inner cavity of the U-shaped seat, so that the connecting rod can more fully contact the inner side wall of the U-shaped seat, which can prevent the connecting rod from shaking in the U-shaped seat on the one hand, and on the other hand, the upper and lower side walls of the U-shaped seat can be better used to support the connecting rod, thereby improving the load-bearing capacity of the connecting rod and maintaining the overall stability of the hinge.

Optionally, when the connecting rod assembly 300 is in the extended state, the protrusion 307 is flush with the opening of the receiving portion or partially protrudes from the opening of the receiving portion. In this way, the connecting rod assembly 300 can maintain a larger contact area with the box mounting seat 100 or the door body connecting seat 200 in the extended state, better support the connecting rod assembly 300, improve the load-bearing capacity of the connecting rod assembly 300, and maintain the stability of the overall hinge.

Optionally, a connecting hole 308 is provided at the end of the connecting rod, and a pin 103 is passed through the connecting hole 308. The connecting rod is rotatably connected to the box mounting seat 100 or the door connecting seat 200. In this way, the connecting rod is rotatably connected to the box mounting seat 100 through the pin shaft 103, so that the connecting rod can rotate relative to the box mounting seat 100, and the pin shaft 103 generally adopts a solid shaft, which is relatively strong and not easy to deform, and can better bear the force transmitted from the connecting rod, so that the connecting rod can maintain stable rotation under the state of force, thereby improving the overall bearing capacity of the hinge and the stability of operation.

Optionally, the protrusion 307 protrudes and extends around the connection hole 308, so that the connection hole 308 passes through the connecting rod and its protrusion 307. In this way, the length of the connection hole 308 can be increased, thereby increasing the contact area between the pin 103 and the connection hole 308, better sharing the force on the connecting rod, improving the overall bearing capacity of the hinge, and maintaining the stability of the hinge.

Optionally, one end of the connecting rod provided with the protrusion 307 is covered with a wear-resistant sheet 400. In this way, due to the close contact between the protrusion 307 and the box mounting seat 100, wear is likely to occur, and the friction force increases due to the large contact area, which affects its rotation. Therefore, covering one end of the protrusion 307 with the wear-resistant sheet 400 can better reduce the wear of the protrusion 307 and the box mounting seat 100, and the wear-resistant sheet 400 can also play a certain lubricating role, so that the relative rotation of the connecting rod and the box mounting seat 100 is smoother.

As shown in Figures 11-13, the embodiment of the present disclosure provides a hinge including: a box mounting seat 100, a connecting rod assembly 300 and a door closer 600. The box mounting seat 100 defines a receiving portion; one end of the connecting rod assembly 300 is installed in the receiving portion and is rotatably connected to the box mounting seat 100, and the other end is used to connect the door body; the door closer 600 is arranged in the receiving portion and is linked and assembled with a connecting rod (the second connecting rod 302) in the connecting rod assembly 300.

In this way, by changing the structure of the box mounting seat 100, a accommodating portion is defined inside it, one end of the connecting rod assembly 300 and the door closer 600 are installed in the accommodating portion, and the door closer 600 is linked and combined with a connecting rod (the second connecting rod 302) in the connecting rod assembly 300, the auxiliary connecting rod assembly 300 is stored and closed, and the door closer 600 is integrated inside the box mounting seat 100 so that it can overlap with the connecting rod assembly 300 in the horizontal direction without occupying additional space, thereby reducing the overall thickness of the hinge and the door closer 600, saving installation space, and reducing the impact on the overall volume of the refrigerator.

Optionally, the door closer 600 is linked with the second connecting rod 302. In this way, since the position of one end of the second connecting rod 302 relative to the box mounting seat 100 does not change and is located inside the box mounting seat 100, it can better cooperate with the door closer 600 for linkage. By applying force to the second connecting rod 302 by the door closer 600, the second connecting rod 302 can drive the entire connecting rod assembly 300 to move, thereby providing the entire connecting rod assembly 300 with auxiliary force when storing, facilitating the closing of the door body and preventing the door body from opening by itself.

It can be understood that the linkage combination of the door closer 600 and the second connecting rod 302 means that the door closer 600 and the second connecting rod 302 have follow-up properties, and the door closer 600 can be directly connected to the second connecting rod 302 or abut against the second connecting rod 302.

Optionally, a protruding stop 309 is provided at one end of one of the connecting rods (the second connecting rod 302) in the connecting rod assembly 300, and the protruding stop 309 is linked to the movable end of the door closer 600. In this way, by providing the protruding stop 309 at one end of the connecting rod so that the protruding stop 309 cooperates with the door closer 600, the connecting rod can be better coordinated, and the door closer 600 can be prevented from directly interlocking with the connecting rod. The door closer 600 is connected to one side of the connecting rod to prevent the door closer 600 from getting stuck on the connecting rod and affecting the normal storage of the connecting rod.

Optionally, the protruding block 309 and the connecting rod are an integral structure, and there is a set angle between the protruding direction of the protruding block 309 and the extending direction of the connecting rod. In this way, the integrity of the protruding block 309 and the connecting rod can be maintained, making it more stable. Since there are two cross-arranged connecting rods in the connecting rod assembly 300, there must be an angle between the unfolded state of the connecting rod and the box mounting seat 100. The door closer 600 is installed in the box mounting seat 100. In order to save more space, it is necessary to install it as parallel to the box mounting seat 100 as possible. By setting the protruding block 309 to have a set angle with the connecting rod assembly 300, it can better match the installation angle of the door closer 600, so that the door closer 600 can better follow the connecting rod through the protruding block 309.

Optionally, a positioning concave surface 310 and a sliding surface 311 are provided on the protruding portion 309, and the positioning concave surface 310 is provided on the side where the protruding portion 309 and the connecting rod meet, and the sliding surface 311 is provided on the side of the protruding portion 309 opposite to the connecting rod. In this way, when the connecting rod is in the retracted state, one end of the door closer 600 will be stuck in the positioning concave surface 310, thereby having a certain restriction effect on the movement of the connecting rod, preventing the connecting rod from opening automatically in the retracted state. When used, it can keep the door body tightly closed, preventing the door body from opening automatically and causing cold leakage, etc., and when one end of the door closer 600 approaches the positioning concave surface 310 and is not completely stuck in the positioning concave surface 310, since the door closer 600 has a tendency to slide toward the positioning concave surface 310, it can help the connecting rod to be completely retracted before the connecting rod is about to be completely retracted. When applied, it is reflected in that a short distance before the door body is about to be completely closed has a force to assist the door body in closing, preventing the user from failing to completely close the door body when closing the door, causing the door body to fail to close normally. When the door closer 600 completely slides out of the positioning concave surface 310 and enters the sliding surface 311 during the door opening process, one end of the door closer 600 will only slide on the sliding surface 311, and will not affect the operation of the connecting rod. When applied, it is reflected in that after the door body is opened for a certain distance, no force in the direction of closing the door is generated, preventing the door body from closing by itself after opening, affecting the normal use of the user.

Optionally, the door closer 600 includes: a slide rod 601, a sliding seat 602 and a spring 603. One end of the slide rod 601 is connected to the box mounting seat 100 through a positioning seat; the sliding seat 602 is sleeved on the other end of the slide rod 601 and can slide relative to the slide rod 601, and the slide seat 602 is slidably connected to the box mounting seat 100, and its sliding direction is the same as the extension direction of the slide rod 601; the spring 603 is sleeved on the slide rod 601 between the sliding seat 602 and the fixed position. In this way, one end of the door closer 600 is fixed, and the other end can move with one end of the connecting rod, and the restoring force of the spring 603 is applied to the connecting rod, so that the connecting rod has a force tending to the closed state of the door body, and better drives the door body to close, wherein the spring 603 is sleeved on the slide rod 601, so that the restoring force of the spring 603 is limited to the direction along the slide rod 601, preventing the spring 603 from deviating to one side during the compression process, affecting the transmission of force.

Optionally, the box mounting seat 100 is provided with a sliding groove 106, and the sliding seat 602 is provided with a protrusion, which is limited to slide in the sliding groove 106. In this way, the stability of the sliding seat 602 sliding in the box mounting seat 100 can be improved, and the sliding seat 602 can be prevented from deflecting.

Optionally, a roller 604 is provided on the sliding seat 602, and the roller 604 abuts against the protruding gear 309. In this way, the door closer 600 can be better matched with the connecting rod. During the movement of the connecting rod, movement friction will be generated between the connecting rod and the door closer 600. The roller 604 can reduce the friction and make the movement between the two smoother, which can reduce wear and tear on the one hand and avoid friction noise on the other.

Optionally, a receiving groove 312 is provided on the second connecting rod 302, and the receiving groove 312 corresponds to the door closer 600. When the door body connecting seat 200 is fully closed, part or all of the door closer 600 is located in the receiving groove 312. In this way, it is possible to avoid the situation where the door closer 600 hinders the second connecting rod 302 from rotating into the box mounting seat 100, thereby ensuring the stability of the door closing process, and the sliding end of the door closer 600 can be stably abutted against the second connection, thereby ensuring the stability of the door body connecting seat 200 during the closing process.

As shown in Figures 14-15, the embodiment of the present disclosure provides a hinge including: a box mounting seat 100, a connecting rod assembly 300 and a door closer 600. The side wall of the box mounting seat 100 is provided with a slide groove 101; the connecting rod assembly 300 includes a plurality of connecting rods, one end of which is rotatably arranged in the slide groove 101 and is limited to slide along the slide groove 101; the door closer 600 is arranged in the slide groove 101 and is linked to the connecting rod rotatably arranged in the slide groove 101.

In this way, a slide groove 101 is set on the box mounting base 100. As the door body is opened relative to the box body, the end of a connecting rod (the second connecting rod 302) in the connecting rod assembly 300 slides in the slide groove 101, and a door closer 600 is set in the slide groove 101. Since the movement of the connecting rod relative to the slide groove 101 is closely related to the door body switch, the door closer 600 set in the slide groove 101 can play a role in assisting door closing by pushing the connecting rod to slide in the slide groove 101. By setting the door closer 600 in the slide groove 101, the normal auxiliary door closing function can be maintained, and at the same time, the space in the slide groove 101 can be fully utilized, thereby reducing the space occupied by the door closer 600, reducing the overall thickness of the hinge and the door closer 600, saving installation space, and reducing the impact on the overall volume of the refrigerator.

Optionally, the same positions of the upper and lower sides of the box mounting seat 100 are both provided with corresponding slide grooves 101, and the two slide grooves 101 are both provided with door closers 600. In this way, the slide grooves 101 are provided on both sides of the box mounting seat 100, so that both ends of the first connecting rod 301 are limited to slide in the slide grooves 101, which can improve the sliding stability of the first connecting rod 301, and apply a fixing force to the first connecting rod 301 from both sides, which can better provide a fixing force to the first connecting rod 301, so that the force on the first connecting rod 301 is better transmitted to the box mounting seat 100, thereby improving the load-bearing capacity of the entire hinge and maintaining the stability of the hinge in use, and by providing the door closers 600 on both sides, the door closers 600 can apply force to both sides of the first connecting rod 301, maintain the balance of force, and the smoothness of the sliding of the first connecting rod 301 along the slide grooves 101.

As shown in FIG. 14 , the door closer 600 is optionally a compression spring 605, which is arranged along the slide slot 101, one end of which is fixed to one end of the slide slot 101, and the other end of which is in contact with the portion of the connecting rod extending into the slide slot 101. In this way, the restoring force of the compression spring 605 can always apply a force like one end of the slide slot 101 to the connecting rod slidably connected in the slide slot 101, so that the force can be applied to the connecting rod more stably, so that the connecting rod always tends to be in a state of being retracted, thereby driving the door body to be in a closed state. It prevents the door from opening by itself and has a better auxiliary door closing effect when the user closes the door. At the same time, the compression spring 605 has a simple structure and low production difficulty.

Optionally, an arc-shaped piece 606 is provided at one end of the compression spring 605 abutting against the connecting rod. In this way, the compression spring 605 and the connecting rod can be better combined to prevent slippage at the abutment between the two, improve the stability of the connection between the compression spring 605 and the connecting rod, and will not affect the rotation of the connecting rod itself, so as to keep the connecting rod moving smoothly.

It can be understood that when the connecting rod is fixed in the slide slot 101 by the pin 103 , the abutment between the compression spring 605 and the part of the connecting rod extending into the slide slot 101 refers to the abutment with the pin 103 .

Optionally, the arcuate of the arcuate piece 606 is the same as the surface arcuate of the pin 103 on the connecting rod inserted into the slide slot 101. In this way, the arcuate piece 606 can better abut against the pin 103 to prevent the two from separating and maintain the stability of the linkage between the two.

The pin shaft 103 will rotate relative to the arc piece 606, so the side of the arc piece 606 facing the pin shaft 103 can be set as a smooth surface to reduce the friction between the two, so that the pin shaft 103 can rotate more smoothly, reduce wear and reduce friction noise.

Optionally, the compression spring 605 is sleeved on the positioning slide rod 607, one end of the positioning slide rod 607 is fixedly connected to the movable end of the compression spring 605, and the other end can slide out of the slide slot 101 and the fixed end of the compression spring 605. In this way, by setting the positioning slide rod 607, the compression and recovery process of the compression spring 605 can be kept on the same straight line, preventing the compression spring 605 from deflecting when being stressed, so that the recovery force of the compression spring 605 is transmitted along a straight line, better pushing the connecting rod to move, and assisting the user to close the door body.

Optionally, one end of the slide groove 101 is provided with a slide rod groove 608 along the extending direction of the slide groove 101, and one end of the compression spring 605 is fixed at the intersection of the slide groove 101 and the slide rod groove 608. In this way, when the positioning slide rod 607 passes through the slide groove 101, the slide rod groove 608 can accommodate the positioning slide rod 607 to maintain the stability of the positioning slide rod 607.

As shown in FIG. 15 , in some embodiments, the door closer 600 is an arc-shaped spring sheet 609, which is attached to the side wall of the slide slot 101 and protrudes toward the inner wall of the slide slot 101, and can be flattened when the connecting rod passes through. In this way, the volume of the door closer 600 can be further reduced, and the door closer 600 can be better combined with the slide slot 101 as a whole, saving installation space, reducing the thickness of the hinge and the door closer 600 as a whole, saving installation space, and reducing the impact on the overall volume of the refrigerator.

Optionally, two sockets are provided on the side wall of the slide slot 101, and the two ends of the arc-shaped spring piece 609 are respectively fixedly inserted into the two sockets. In this way, since the thickness of the arc-shaped insert is small, the fixing effect of the ordinary fixing method is not ideal. By inserting both ends of the arc-shaped spring piece 609 into the sockets, a better fixing effect can be achieved to prevent the arc-shaped spring piece 609 from falling off due to force.

Optionally, when the connecting rod assembly 300 is folded, one end of the connecting rod rotatably arranged in the slide slot 101 is located at the first end of the slide slot 101, and one end of the arc-shaped spring sheet 609 is arranged at the first end of the slide slot 101. 609 can play a limiting role. When the connecting rod assembly 300 is in a retracted state, one end of the connecting rod is fixed to prevent the connecting rod assembly 300 from opening automatically, thereby preventing the door body from opening automatically and keeping the door body tightly closed.

Optionally, there is a set gap between the arc spring piece 609 and the first end of the slide slot 101, and a positioning portion is defined between the first end of the slide slot 101 and the arc spring piece 609, and the pin shaft 103 connected to the connecting rod can be just caught in the positioning portion. In this way, after the pin shaft 103 passes through the arc spring piece 609, the pin shaft 103 can be fixed at the first end of the slide slot 101 to prevent the pin shaft 103 from moving. When in use, the door body is kept closed to prevent the door body from opening automatically.

Optionally, the arc spring piece 609 has an arc of two sections, and the arc of the first end thereof toward the slide slot 101 is smaller than the arc of the other end thereof. In this way, when the connecting rod assembly 300 is folded, one of the connecting rods presses the arc spring piece 609, and the restoring force of the arc spring piece 609 can slowly push the connecting rod toward the first end of the slide slot 101, so that the force-bearing process has a certain stroke, and when the user does not completely close the door body, it can have a certain function of automatically closing the door body, thereby preventing the door body from not being completely closed, resulting in cold leakage, etc.

An embodiment of the present disclosure provides a refrigerator, comprising: a hinge according to any one of the above embodiments.

As shown in FIG. 16 , an embodiment of the present disclosure provides a refrigerator 1000 , comprising one or more hinges as in any of the above embodiments, wherein a cabinet mounting seat 100 and a door connecting seat 200 may be provided in one or more groups.

The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (63)

1. A hinge, characterized by comprising:

   The box mounting seat (100) is a U-shaped seat, defining a first accommodating portion (105);

   The door body connecting seat (200) is a U-shaped seat, defining a second accommodating portion (201);

   A connecting rod assembly (300) having one end rotationally connected to the first accommodating portion (105) and the other end rotationally connected to the second accommodating cavity, wherein when the connecting rod assembly (300) is in a folded state, the box mounting seat (100) is adapted to the door body connecting seat (200) so that the first accommodating portion (105) and the second accommodating portion (201) completely wrap the connecting rod assembly (300).
2. The hinge according to claim 1, characterized in that a connecting rod in the connecting rod assembly (300) is slidably connected to the box mounting seat (100).
3. The hinge according to claim 2 is characterized in that a slide groove (101) is provided on the box mounting seat (100), and one end of a connecting rod in the connecting rod assembly (300) can slide along the slide groove (101).
4. The hinge according to claim 3 is characterized in that the sliding grooves (101) are arranged in pairs and are respectively located on the upper and lower sides of the box mounting base (100).
5. The hinge according to claim 4 is characterized in that one of the connecting rods in the connecting rod assembly (300) is clamped in the middle of the paired slide grooves (101), and the same pin shaft (103) passes through the two slide grooves (101) and the connecting rod, so that the connecting rod is limited to slide along the slide groove (101).
6. The hinge according to any one of claims 1 to 5, characterized in that the depth of the first accommodating portion (105) is greater than the depth of the second accommodating portion (201).
7. The hinge according to any one of claims 1 to 5 is characterized in that a matching load-bearing structure (500) is provided between the box mounting seat (100) and the door connecting seat (200).
8. The hinge according to claim 7, characterized in that the matching load-bearing structure (500) comprises:

   A load-bearing groove (501) is arranged on the box mounting seat (100);

   The load-bearing protrusion (502) is arranged on the door body connecting seat (200) and can be adapted to be connected with the load-bearing groove (501), so that the box body mounting seat (100) forms a supporting effect on the door body connecting seat (200).
9. The hinge according to any one of claims 1 to 5 is characterized in that a right-angle connecting piece (202) is provided on the door body connecting seat (200), one surface of the right-angle connecting piece (202) is detachably connected to the door body connecting seat (200), and the other surface is used to fix the door body.
10. A hinge, characterized by comprising:

    Box mounting seat (100);

    Door body connecting seat (200);

    The connecting rod assembly (300) comprises a plurality of sheet-shaped connecting rods, some of the connecting rods being rotatably connected to each other, one end of some of the connecting rods being rotatably connected to the box body mounting seat (100), and one end of some of the connecting rods being rotatably connected to the door body connecting seat (200);

    A wear-resistant sheet (400) is arranged at the connection between the box body mounting seat (100), the door body connecting seat (200) and the connecting rod to reduce wear.
11. The hinge according to claim 10, characterized in that the wear-resistant sheet (400) comprises:

    A wrapped wear-resistant sheet (402) is wrapped around the end of the connecting rod connected to the box body mounting seat (100) and the door body connecting seat (200).
12. The hinge according to claim 10, characterized in that the wear-resistant sheet (400) comprises:

    A gasket-type wear-resistant sheet (401) is clamped between the connection points where the connecting rods are rotatably connected to each other.
13. The hinge according to claim 12 is characterized in that the gasket-type wear-resistant sheet (401) is a circular thin sheet.
14. The hinge according to claim 10 is characterized in that the wear-resistant sheet (400) is made of copper sheet.
15. The hinge according to any one of claims 10 to 14, characterized in that the connecting rod assembly (300) comprises:

    A first connecting rod (301), one end of which is rotatably and slidably connected to the box mounting seat (100);

    A second connecting rod (302) is hinged to the box mounting seat (100), and a middle area thereof is hinged to a middle area of the first connecting rod (301);

    The third connecting rod (303) is hinged to one end of the second connecting rod (302).
16. The hinge according to claim 15 is characterized in that a slide groove (101) is provided on the box mounting seat (100), and one end of the first connecting rod (301) can slide along the slide groove (101).
17. The hinge according to claim 16 is characterized in that a slider (102) is provided in the slide groove (101), and the slider (102) is limited to slide along the slide groove (101) to rotationally connect one end of the first connecting rod (301) to the slider (102).
18. The hinge according to claim 17 is characterized in that the slider (102) is also covered with the wear-resistant sheet (400).
19. A hinge, characterized by comprising:

    Box mounting seat (100);

    Door body connecting seat (200);

    The connecting rod assembly (300) includes a plurality of plate-shaped connecting rods, one end of some of the connecting rods is rotationally connected to the box mounting seat (100), one end of some of the connecting rods is rotationally connected to the door body connecting seat (200), and one end of at least one of the connecting rods is provided with a clamping groove (305), and the clamping groove (305) clamps one end of another connecting rod and is rotationally connected thereto.
20. The hinge according to claim 19 is characterized in that the clamping groove (305) is a groove opened on the connecting rod, and its outer side wall is flush with the surface of the connecting rod.
21. The hinge according to claim 19 is characterized in that one end of the connecting rod clamped in the clamping groove (305) is arc-shaped.
22. The hinge according to claim 19, characterized in that the connecting rod assembly (300) comprises:

    A first connecting rod (301), one end of which is rotatably and slidably connected to the box mounting seat (100);

    A second connecting rod (302), one end of which is rotatably connected to the box mounting seat (100), and a middle area of which is hinged to a middle area of the first connecting rod (301);

    The third connecting rod (303) is rotatably connected to the other end of the second connecting rod (302) through the clamping groove (305).
23. The hinge according to claim 22, characterized in that the clamping groove (305) is provided on the third connecting rod (303).
24. The hinge according to claim 22 is characterized in that the other end of the first connecting rod (301) and the other end of the third connecting rod (303) are both rotatably connected to the door body connecting seat (200).
25. The hinge according to claim 22 is characterized in that the second connecting rod (302) is provided with a limiting groove (304) extending from the connection point between the second connecting rod (302) and the third connecting rod (303).
26. The hinge according to any one of claims 19 to 25 is characterized in that a slide groove (101) is provided on the box mounting seat (100), and one end of a connecting rod in the connecting rod assembly (300) is limited to slide along the slide groove (101).
27. The hinge according to claim 26 is characterized in that the sliding groove (101) is arranged at an angle.
28. A hinge, characterized by comprising:

    The box body mounting seat (100) is a U-shaped seat defining a receiving portion;

    The door body connecting seat (200) is also a U-shaped seat;

    The connecting rod assembly (300) includes a plurality of plate-shaped connecting rods, one end of some of the connecting rods being rotationally connected to the box mounting seat (100), and one end of some of the connecting rods being rotationally connected to the door connecting seat (200), and the ends of the connecting rods rotationally connected to the box mounting seat (100) and rotationally connected to the door connecting seat (200) are both constructed with protrusions (307) extending outwardly perpendicular to the surface of the connecting rod.
29. The hinge according to claim 28 is characterized in that the sum of the thickness of the connecting rod and the protrusion 307 provided thereon is adapted to the thickness of the inner cavity of the U-shaped seat on which it is installed.
30. The hinge according to claim 28 is characterized in that a connecting hole (308) is provided at the end of the connecting rod, a pin shaft (103) is passed through the connecting hole (308), and the connecting hole (308) is rotatably connected to the box mounting seat (100) or the door body connecting seat (200) through the pin shaft (103).
31. The hinge according to claim 28 is characterized in that the protrusion (307) protrudes and extends around the connecting hole (308), so that the connecting hole (308) passes through the connecting rod and its protrusion (307).
32. The hinge according to claim 28 is characterized in that the end of the connecting rod provided with the protrusion (307) is covered with a wear-resistant sheet (400).
33. The hinge according to any one of claims 28 to 32, characterized in that the connecting rod assembly (300) comprises:

    A first connecting rod (301), one end of which is rotatably and slidably connected to the box mounting seat (100);

    A second connecting rod (302) is hinged to the box mounting seat (100), and a middle area thereof is hinged to a middle area of the first connecting rod (301);

    A third connecting rod (303) is hinged to one end of the second connecting rod (302);

    The box mounting seat (100) is provided with a slide groove (101), and one end of the first connecting rod (301) can slide along the slide groove (101).
34. The hinge according to claim 33 is characterized in that the side surface of the slide groove (101) is an inclined surface.
35. The hinge according to claim 33 is characterized in that the third connecting rod (303) has a bending section (306).
36. A hinge, characterized by comprising:

    A first connecting rod (301);

    A second connecting rod (302), wherein the middle region thereof is hinged to the middle region of the first connecting rod (301), the first connecting rod (301) and the second connecting rod (302) are both sheet-shaped structures, and the hinged surfaces of the two are in contact with each other;

    The third connecting rod (303) is hinged to one end of the second connecting rod (302), and the second connecting rod (302) is provided with a limiting groove (304) extending based on the hinge point.
37. The hinge according to claim 36 is characterized in that the first connecting rod (301), the second connecting rod (302) and the third connecting rod (303) are all solid structures.
38. The hinge according to claim 36 is characterized in that the first connecting rod (301) and the second connecting rod (302) have the same thickness, and the thickness of the third connecting rod (303) is greater than the thickness of the first connecting rod (301).
39. The hinge according to claim 36 is characterized in that the length of the third connecting rod (303) is smaller than that of the first connecting rod (301) and the second connecting rod (302).
40. The hinge according to claim 36 is characterized in that a wear-resistant plate (400) is provided between the surfaces of the first connecting rod (301) and the second connecting rod (302) that are in contact with each other.
41. The hinge according to claim 36 is characterized in that the first connecting rod (301) and the second connecting rod (302) have the same length and their center points are hinged to each other.
42. The hinge according to claim 36 is characterized in that the third connecting rod (303) has a bending section (306).
43. The hinge according to any one of claims 36 to 42, further comprising:

    A box mounting seat (100), one end of the first connecting rod (301) is rotationally and slidingly connected to the box mounting seat (100), and one end of the second connecting rod (302) is hinged to the box mounting seat (100).
44. The hinge according to any one of claims 36 to 42, further comprising:

    The door body connecting seat (200), the other ends of the first connecting rod (301) and the third connecting rod (303) are hinged to the door body connecting seat (200).
45. A hinge, characterized by comprising:

    The box mounting seat (100) defines a receiving portion;

    A connecting rod assembly (300), one end of which is installed in the accommodating portion and is rotatably connected to the box mounting seat (100), and the other end of which is used to connect to the door body;

    The door closer (600) is arranged in the accommodating portion and is linked and assembled with a connecting rod in the connecting rod assembly (300).
46. The hinge according to claim 45 is characterized in that the cross-section of the box mounting seat (100) is U-shaped, and the accommodating portion is defined in the middle thereof.
47. The hinge according to claim 45, characterized in that the connecting rod assembly (300) comprises:

    A first connecting rod (301), one end of which is rotatably and slidably connected to the box mounting seat (100);

    One end of the second connecting rod (302) is rotatably connected to the box mounting seat (100).
48. The hinge according to claim 47 is characterized in that a slide groove (101) is provided on the box mounting seat (100), and one end of the first connecting rod (301) is limited to slide in the slide groove (101) and can rotate relative to the slide groove (101).
49. The hinge according to claim 47 is characterized in that the slide groove (101) is provided on both the upper and lower sides of the box mounting seat (100), and one end of the first connecting rod (301) is simultaneously confined in the slide groove (101) on both the upper and lower sides of the box mounting seat (100).
50. The hinge according to claim 48 is characterized in that the slide groove (101) is arranged at an angle.
51. The hinge according to claim 47 is characterized in that the door closer (600) is linked to the second connecting rod (302) in a combined manner.
52. The hinge according to any one of claims 45 to 51 is characterized in that a protruding stop (309) is provided at one end of a connecting rod in the connecting rod assembly (300), and the protruding stop (309) is linked to the movable end of the door closer (600).
53. The hinge according to any one of claims 45 to 51, characterized in that the door closer (600) comprises:

    A sliding rod (601), one end of which is connected to the box mounting seat (100) via a positioning seat;

    A sliding seat (602) is sleeved on the other end of the sliding rod (601) and can slide relative to the sliding rod (601). The sliding seat (602) is slidably connected to the box mounting seat (100), and its sliding direction is the same as the extension direction of the sliding rod (601);

    The spring (603) is sleeved on the sliding rod (601) between the sliding seat (602) and the fixed position.
54. A hinge, characterized by comprising:

    The box body mounting seat (100) has a side wall provided with a slide groove (101);

    A connecting rod assembly (300) comprises a plurality of connecting rods, wherein one end of one of the connecting rods is rotatably disposed in the slide groove (101) and is confined in the slide groove (101) to slide along the same;

    The door closer (600) is arranged in the slide groove (101) and is linked to the connecting rod rotatably arranged in the slide groove (101).
55. The hinge according to claim 54 is characterized in that the door closer (600) is a compression spring (605), which is arranged along the slide groove (101), one end of which is fixed to one end of the slide groove (101), and the other end abuts against the part of the connecting rod extending into the slide groove (101).
56. The hinge according to claim 55 is characterized in that an arc-shaped piece (606) is provided at one end of the compression spring (605) abutting against the connecting rod.
57. The hinge according to claim 55 is characterized in that the compression spring (605) is mounted on a positioning slide rod (607), one end of the positioning slide rod (607) is fixedly connected to the movable end of the compression spring (605), and the other end can slide out of the slide groove (101) and the fixed end of the compression spring (605).
58. The hinge according to claim 54 is characterized in that the door closer (600) is an arc-shaped spring sheet (609), which is attached to the side wall of the slide groove (101) and protrudes toward the inner wall of the slide groove (101), so that it can be flattened when the connecting rod passes by.
59. The hinge according to claim 58 is characterized in that, when the connecting rod assembly (300) is in a folded state, one end of the connecting rod rotatably arranged in the slide groove (101) is located at the first end of the slide groove (101), and one end of the arc-shaped spring sheet (609) is arranged at the first end of the slide groove (101).
60. The hinge according to any one of claims 54 to 59 is characterized in that the slide groove (101) is arranged at an angle.
61. The hinge according to any one of claims 54 to 59 is characterized in that the box mounting seat (100) is a U-shaped seat, defining an accommodation portion inside, and the connecting rod assembly (300) is installed in the accommodation portion.
62. The hinge according to claim 61 is characterized in that the sliding grooves (101) are correspondingly arranged at the same positions on the upper and lower sides of the box mounting seat (100), and door closers (600) are arranged in the two sliding grooves (101).
63. A refrigerator, characterized in that it comprises the hinge according to any one of claims 1 to 62.