Hinge structure and refrigerator with same

Abstract

The invention provides a hinge mechanism and a refrigerator with the same, and the hinge mechanism comprises a fixed seat which is used for being installed on a refrigerator body of the refrigerator, a movable seat which is used for being installed on a door body of the refrigerator, and a connecting rod assembly which is connected between the fixed seat and the movable seat, when the movable seat is rotationally opened relative to the fixed seat through a first connecting rod, a second connecting rod and a linkage rod in the connecting rod assembly, the movable seat moves according to a preset track, so that when the hinge mechanism is applied to the refrigerator, the movement track of the door body can be controlled, the universality of the refrigerator is improved, and the service life of the refrigerator is prolonged. Even if the refrigerator is in an embedded application scene, the opening degree of the door body can be ensured, and interference with a cabinet and the like cannot be generated when the door body is opened; in addition, the hinge mechanism further comprises a limiting structure arranged between the fixing base and the connecting rod assembly, and the stability of the connecting rod assembly in the moving process is improved through the limiting structure.

Description

Technical Field

[0001] The invention relates to the field of refrigeration equipment, and in particular to a hinge structure and a refrigerator having the hinge structure. Background Art

[0002] Built-in refrigerators are electrical appliances placed in cabinets. By opening the cabinet door, the refrigerator door is directly opened, which saves space and has a stylish appearance. It has become a trend in the refrigerator industry. However, in actual use, due to the influence of the hinged structure of the refrigerator door and the refrigerator body in traditional refrigerators, when the refrigerator door is opened, the side where the refrigerator door and the refrigerator body are hinged often protrudes from the side wall of the refrigerator body. In the application scenario of built-in refrigerators, the traditional hinged structure will not only affect the opening of the refrigerator door, but also the refrigerator door will interfere with the objects around the built-in refrigerator, and even damage the surface of the refrigerator door, affecting the aesthetics of the refrigerator and the user experience. Summary of the invention

[0003] The object of the present invention is to provide a hinge structure and a refrigerator having the same, so as to solve the above-mentioned problems.

[0004] To achieve one of the above-mentioned invention purposes, the present invention provides a hinge mechanism having a pivot end, wherein the hinge mechanism comprises a fixed seat for being installed on a refrigerator body, a movable seat for being installed on a door body of the refrigerator, and a connecting rod assembly connected between the fixed seat and the movable seat, wherein the connecting rod assembly comprises: a first connecting rod, wherein a first end of the first connecting rod is movably connected to a side of the fixed seat away from the pivot end, and a second end is movably connected to a side of the movable seat close to the pivot end; a second connecting rod, wherein a third end of the second connecting rod is movably connected to a side of the fixed seat close to the pivot end, and a fourth end is slidably connected to a side of the movable seat away from the pivot end; at least one of the first end, the second end, the third end, and the fourth end is slidably connected to a corresponding fixed seat or a movable seat; a linkage rod, wherein both ends of the linkage rod are respectively connected to the first linkage rod and the second linkage rod, and are used to drive the first linkage rod and the second linkage rod to move according to a preset trajectory; the hinge mechanism also comprises a limiting structure arranged between the fixed seat and the connecting rod assembly.

[0005] As a further improvement of the present invention, the limiting structure includes a guide groove provided on one of the fixing seat and the connecting rod assembly, and a guide shaft provided on the other one.

[0006] As a further improvement of the present invention, the fixing seat has a fixing portion for fixing on the box body and a connecting plate for connecting the connecting rod assembly; the connecting plate includes a first connecting plate connected to the first connecting rod and a second connecting plate connected to the second connecting rod, and the guide groove is arranged on a side of the first connecting plate close to the second connecting plate.

[0007] As a further improvement of the present invention, a first connecting portion connected to the first connecting rod is provided on the first connecting plate, and the guide groove takes the first connecting portion as a rotation center.

[0008] As a further improvement of the present invention, the first connecting rod also includes a avoidance section and a first linkage section, and the first connection point is arranged on the avoidance section; when the movable seat is in a closed state, along the direction close to the pivot end, the avoidance section first extends obliquely toward the direction close to the fixed part, and then extends obliquely toward the direction away from the fixed part; the first linkage section first extends horizontally, and then extends obliquely toward the fixed seat close to the pivot end.

[0009] As a further improvement of the present invention, the guide groove includes a front end limiting portion away from the fixed portion and a rear end limiting portion close to the fixed seat portion. When the guide shaft cooperates with the front end limiting portion, the door body is in a maximum open state; when the guide shaft cooperates with the rear end limiting portion, the door body is in a closed state.

[0010] As a further improvement of the present invention, the first connecting rod, the linkage rod and the second connecting rod are staggered along the vertical direction; the fixed seat also includes an accommodating cavity between the guide groove and the second connecting plate, and when the door body is in a closed state, the linkage rod is located in the accommodating cavity.

[0011] As a further improvement of the present invention, the first end of the first connecting rod is provided with a first connection point rotatably connected to the side of the fixed seat away from the pivot end, and the second end is provided with a second connection point rotatably connected to the side of the movable seat close to the pivot end; the third end of the second connecting rod is provided with a third connection point rotatably connected to the side of the fixed seat close to the pivot end, and the fourth end is provided with a fourth connection point slidably connected to the side of the movable seat away from the pivot end; when the movable seat is in a closed state, the third connection point is located on the side of the second connection point away from the fixed portion.

[0012] Another aspect of the present invention provides a refrigerator, comprising a box body and a door body for opening and closing the box body, and the refrigerator also comprises a hinge mechanism connected between the box body and the door body as described in any one of the above technical solutions.

[0013] As a further improvement of the present invention, the door body has an end cover at one end close to the hinge mechanism, and the movable seat is integrally arranged with the end cover.

[0014] The present invention provides a hinge mechanism and a refrigerator having the same. The hinge mechanism includes a fixed seat for installation on a refrigerator body, a movable seat for installation on a door body of the refrigerator, and a connecting rod assembly connected between the fixed seat and the movable seat. When the movable seat is rotated and opened relative to the fixed seat by means of a first connecting rod, a second connecting rod and a linkage rod in the connecting rod assembly, the movable seat moves according to a preset trajectory. Therefore, when the hinge mechanism of the present invention is applied to a refrigerator, the movement trajectory of the door body can be controlled, thereby improving the versatility of the refrigerator, so that the refrigerator can ensure the door opening even in an embedded application scenario, and will not interfere with a cabinet or the like when the door body is opened. In addition, the hinge mechanism of the present invention also includes a limiting structure arranged between the fixed seat and the connecting rod assembly, and the stability of the connecting rod assembly during movement is improved by the limiting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a refrigerator in a specific embodiment of the present invention with the door body opened;

[0016] Figure 2 yes Figure 1 A schematic diagram of the structure of the refrigerator with the door open from another viewing angle;

[0017] Figure 3 yes Figure 2 The enlarged schematic diagram at A in the middle;

[0018] Figure 4 yes Figure 3 Structural diagram of the middle chute;

[0019] Figure 5 yes Figure 1 Exploded diagram of the middle hinge mechanism;

[0020] Figure 6 It is a structural schematic diagram of the hinge mechanism when the connecting rod assembly is in a folded state;

[0021] Figure 7 yes Figure 6 A structural diagram of the hinge mechanism from another perspective;

[0022] Figure 8 yes Figure 6 Schematic diagram of the structure of the middle connecting rod assembly. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0024] It should be understood that the terms used herein, such as "upper", "lower", "outer", "inner", etc., indicating spatial relative positions are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The spatial relative position terms may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0025] The present invention provides a refrigerator 100, referring to Figure 1 and Figure 2 As shown, the refrigerator 100 includes a box body 1 and a door body 2 for opening and closing the box body 1. The refrigerator 100 also includes a hinge mechanism 300 connected between the box body 1 and the door body 2, and the door body 2 of the refrigerator 100 is opened and closed by the hinge mechanism 300.

[0026] Further, see Figures 3 to 8 As shown, the hinge mechanism 300 includes a fixed seat 5 for mounting on the box body 1 of the refrigerator 100, a movable seat 6 for mounting on the door body 2 of the refrigerator 100, and a connecting rod assembly 7 connected between the fixed seat 5 and the movable seat 6. It is known that in the process of the door body rotating and opening, the movable seat 6 moves synchronously with the door body 2, and under the action of the connecting rod assembly 7, the movement trajectory of the door body 2 and the movable seat 6 can be controlled.

[0027] It can be understood that, in the refrigerator 100, the door body 2 and the box body 1 have a pivot side that is rotatably connected, and the pivot end 4 in the present invention is an end of the hinge mechanism 300 that is close to the pivot side after being installed in the refrigerator 100.

[0028] The connecting rod assembly 7 includes a first connecting rod 71, a second connecting rod 72, and a linkage rod 73 for driving the first connecting rod 71 and the second connecting rod 72 to move along a preset trajectory. It is known that during the rotation and opening process of the door body 2, driven by the linkage rod 73, the first connecting rod 71 and the second connecting rod 72 move along their respective preset trajectories to control the movement trajectories of the door body 2 and the movable seat 6.

[0029] Specifically, the first end of the first connecting rod 71 is movably connected to the side of the fixed seat 5 away from the pivot end 4, and the second end is movably connected to the side of the movable seat 6 close to the pivot end 4; the third end of the second connecting rod 72 is movably connected to the side of the fixed seat 5 close to the pivot end 4, and the fourth end is slidably connected to the side of the movable seat 6 away from the pivot end 4; at least one of the first end, the second end, the third end, and the fourth end is slidably connected to the corresponding fixed seat 5 or the movable seat 6; the two ends of the linkage rod 73 are respectively connected to the first connecting rod 71 and the second connecting rod 72, so as to drive the first connecting rod 71 and the second connecting rod 72 to move according to a preset trajectory. The invention enables the movable seat 6 to rotate and open relative to the fixed seat 5 through the first connecting rod 71, the second connecting rod 72 and the linkage rod 73 in the connecting rod assembly, and the movable seat 6 moves according to a preset trajectory. Therefore, when the hinge mechanism 300 of the present invention is applied to a refrigerator, the movement trajectory of the door body 2 can be controlled, and the versatility of the refrigerator 100 can be improved, so that the refrigerator 100 will not interfere with the cabinet when the door body 2 is opened even in an embedded application scenario, and the opening degree of the door body 2 can be guaranteed. In addition, the hinge mechanism 300 of the present invention also includes a limiting structure 10 provided between the fixed seat 5 and the connecting rod assembly 7, and the limiting structure 10 is used to improve the stability of the connecting rod assembly 7 during movement.

[0030] It can be understood that the movable seat 6 of the hinge mechanism 300 has an open state and a closed state. When the movable seat 6 is in the open state, the door body 2 is also in the open state. When the movable seat 6 is in the closed state, the door body 2 is also in the closed state.

[0031] In the present invention, the movable seat 6 is rotated with the pivot end 4 as the center, and the movable seat 6 is driven to switch between the open state and the closed state by the movement of the connecting rod assembly 7. Specifically, the connecting rod assembly 7 has an unfolded state and a folded state. When the connecting rod assembly 7 is in the unfolded state, the movable seat 6 is in the open state. When the connecting rod assembly 7 is in the folded state, the movable seat 6 is in the closed state.

[0032] Furthermore, the door body 2 of the refrigerator 100 in the present invention has an end cover at one end close to the hinge mechanism 300, and the movable seat 6 is integrally arranged with the end cover, which not only simplifies the installation steps of the hinge mechanism 300, but also increases the overall strength of the movable seat 6.

[0033] Furthermore, the movable seat 6 is provided with a slide groove 8, see Figure 2As shown, the second connecting rod 72 is provided with a sliding shaft 9 that cooperates with the sliding groove 8, and the second connecting rod 72 is slidably connected to the movable seat 6 through the cooperation between the sliding groove 8 and the sliding shaft 9. It can be understood that the sliding groove 8 can be integrally provided with the movable seat 6, or can be embedded on the end surface of the movable seat 6.

[0034] Further, see Figure 4 As shown, the slide slot 8 includes a first guide arc segment 81 away from the side of the pivot end 4 and a second guide segment 82 close to the side of the pivot end 4; the first guide arc segment 81 includes a starting end 811 away from the second guide segment 82 and a terminal end 812 close to the second guide segment 82. When the slide shaft 9 is located at the starting end 811, the door body 2 is in a closed state. When the slide shaft 9 slides from the starting end 811 to the terminal end 812, the connecting rod assembly 7 drives the movable seat 6 to move the door body 2 forward, so that the connecting rod assembly 7 can open and close the movable seat 6 in a smaller space while ensuring the opening range of the movable seat 6. It can be understood that the terminal end 812 of the first guide arc segment 81 is connected to the second guide end.

[0035] Furthermore, when the sliding shaft 9 is located at the end of the second guide segment 82 away from the first guide arc segment 81, the door body 2 is in a maximum open state.

[0036] In a specific embodiment of the present invention, the process of the door body 2 from closing to opening is as follows: the sliding shaft 9 on the second connecting rod 72 first slides from the starting end 811 of the first guide arc segment 81 to the terminal end 812, so that the connecting rod assembly 7 first drives the door body 2 to move forward, and then the sliding shaft 9 on the second connecting rod 72 slides from the second guide segment 82 close to the terminal end 812 to the second guide segment 82 away from the terminal end 812, so that the connecting rod assembly 7 drives the door body 2 to rotate in situ, so that the connecting rod assembly 7 can open and close the movable seat 6 in a smaller space while ensuring the opening range of the movable seat 6. When the hinge mechanism 300 of the present invention is applied to a refrigerator, it can control the movement trajectory of the door body 2, thereby improving the versatility of the refrigerator 100, so that even in an embedded application scenario, the refrigerator 100 will not interfere with cabinets, etc. when opening the door body 2, and the opening degree of the door body 2 can be ensured.

[0037] Further, see Figures 5 to 7As shown, for the sake of clarity, the structures of the movable seat 6 and the slide slot 8 are hidden in the figure. The fixed seat 5 has a fixed portion 51 for fixing to the box body 1 and a connecting plate 52 for connecting to the connecting rod assembly 7; when the door body 2 is in a closed state, the first guide arc segment 81 extends from the starting end 811 to the direction close to the fixed portion 51, and the arc center of the first guide arc segment 81 is located on the side away from the fixed portion 51; the second guide segment 82 extends from the terminal end 812 to the direction close to the fixed portion 51.

[0038] Furthermore, the limiting structure 10 includes a guide groove 101 provided on one of the fixing seat 5 and the connecting rod assembly 7, and a guide shaft 102 provided on the other. The guide groove 101 and the guide shaft 102 cooperate with each other to ensure the stability of the movement and the position accuracy of the connecting rod assembly 7 when the connecting rod assembly 7 switches between the unfolded state and the folded state.

[0039] In a specific embodiment, the fixing seat 5 has a fixing portion 51 for fixing on the box body 1 and a connecting plate 52 for connecting the connecting rod assembly 7; specifically, the connecting plate 52 includes a first connecting plate 521 connected to the first connecting rod 71 and a second connecting plate 522 connected to the second connecting rod 72, and the guide groove 101 is arranged on a side of the first connecting plate 521 close to the second connecting plate 522.

[0040] Furthermore, a first connecting portion 5211 connected to the first connecting rod 71 is provided on the first connecting plate 521 , and the guide groove 101 takes the first connecting portion 5211 as a rotation center.

[0041] Furthermore, the first connecting rod 71 includes a avoiding section 714 connected to the first connecting plate 521, and the guide shaft 102 is arranged on the avoiding section 714. It can be understood that the guide groove 101 is recessed on the first connecting plate 521, and the guide shaft 102 is a convex column protruding from the avoiding section 714 toward the guide groove 101. When the movable seat 6 is in a closed state, along the direction close to the pivot end 4, the avoiding section 714 first extends obliquely toward the direction close to the fixed portion 51, and then extends obliquely toward the direction away from the fixed portion 51. When the movable seat 6 is closed, the structure of the avoiding section 714 can avoid interference between the first connecting rod 71 and the second connecting rod 72, and at the same time reduce the gap between the door body 2 and the box body 1.

[0042] Furthermore, the guide groove 101 includes a front end limiting portion 1011 away from the fixing portion 51 and a rear end limiting portion 1012 close to the fixing seat 5. When the guide shaft 102 cooperates with the front end limiting portion 1011, the door body 2 is in a maximum open state; when the guide shaft 102 cooperates with the rear end limiting portion 1012, the door body 2 is in a closed state. It can be understood that, in the process of the door body 2 from closing to opening, the first connecting rod 71 moves from the side close to the fixing portion 51 to the side away from the fixing portion 51. During the movement of the first connecting rod 71, the first connecting rod 71 drives the guide shaft 102 to slide from the rear end limit portion 1012 of the fixing portion 51 to the front end limit portion 1011. At the same time, the second connecting rod 72 and the linkage rod 73 move at the same time, so that the first connecting rod 71, the second connecting rod 72 and the linkage rod 73 in the connecting rod assembly 7 can realize the opening and closing of the movable seat 6 in a small space without affecting the opening range of the movable seat 6; while not affecting the opening range of the door body 2 of the refrigerator 100, it can also prevent the refrigerator 100 from being placed in a deep and narrow space, causing the door body 2 to interfere with other objects when opening the door, avoiding damage to the surface of the door body 2 of the refrigerator 100, and improving the user experience. At the same time, the stability of the movement process of the connecting rod assembly 7 is improved by the limiting structure 10.

[0043] In the vertical direction, the first connecting rod 71, the linkage rod 73 and the second connecting rod 72 are staggered, so that when the movable seat 6 is in the closed state, the connecting rod assembly 7 occupies a smaller space. The fixed seat 5 also includes a receiving cavity between the guide groove 101 and the second connecting plate 522. When the door body 2 is in the closed state, the linkage rod 73 is located in the receiving cavity. On the premise of ensuring the movement trajectory of the connecting rod assembly 7, the volume of the connecting rod assembly 7 in the folded state is further reduced, and the distance between the movable seat 6 and the fixed seat 5 is reduced, thereby reducing the gap between the door body 2 and the box body 1 of the refrigerator 100.

[0044] Furthermore, the first link 71 further includes a first linkage section 711 connected to the avoidance section 714, and when the movable seat 6 is in the closed state, the first linkage section 711 is located on the side of the second link 72 away from the fixed portion 51. Specifically, when the movable seat 6 is in the closed state, along the direction close to the pivot end 4, the first linkage section 711 first extends horizontally, and then extends obliquely toward the fixed seat 5 close to the pivot end 4, thereby further reducing the gap between the door body 2 and the box body 1 when the movable seat 6 is closed.

[0045] Furthermore, the second connecting rod 72 has a second linkage section 721 located on the side of the first connecting rod 71 close to the fixed portion 51 when the movable seat 6 is in a closed state. One end of the linkage rod 73 is connected to the first linkage section 711, and the other end is connected to the second linkage section 721, thereby realizing opening and closing of the movable seat 6 in a smaller space without affecting the opening range of the movable seat 6.

[0046] Furthermore, the first end of the first connecting rod 71 is provided with a first connection point 712 rotatably connected to the side of the fixed seat 5 away from the pivot end 4, and the second end of the first connecting rod 71 is provided with a second connection point 713 rotatably connected to the side of the movable seat 6 close to the pivot end 4, so that the first connecting rod 71 is rotatably connected between the fixed seat 5 and the movable seat 6.

[0047] The third end of the second connecting rod 72 is provided with a third connecting point 722 rotatably connected to the side of the fixed seat 5 close to the pivot end 4, and the fourth end of the second connecting rod 72 is provided with a fourth connecting point 723 slidably connected to the side of the movable seat 6 away from the pivot end 4.

[0048] When the movable seat 6 is in a closed state, the third connection point 722 is located on the side of the second connection point 713 away from the fixed portion 51, so that the connecting rod assembly 7 is folded and stored between the fixed seat 5 and the movable seat 6. When the movable seat 6 is in a closed state, the occupied area of ​​the hinge mechanism 300 is reduced, thereby reducing the gap between the cabinet 1 and the door body 2 when the door body 2 of the refrigerator 100 is in a closed state.

[0049] It can be understood that the connecting plate 52 of the present invention is connected to the upper end of the fixing portion 51, and cantilevers vertically from the connection with the fixing portion 51 in a direction away from the fixing portion 51. When the door body 2 is closed, the projection of the connecting plate 52 in the vertical direction coincides with the door body 2.

[0050] It can be understood that when the movable seat 6 is in the open state, the third connection point 722 is located on a side of the second connection point 713 close to the fixing portion 51 .

[0051] In the present invention, when the movable seat 6 is converted from a closed state to an open state, the first connection point 712 and the third connection point 722 connected to the fixed seat 5 rotate in situ, and the second connection point 713 and the fourth connection point 723 movably connected to the movable seat 6 move, and the first connecting rod 71 takes the first connection point 712 as the rotation center, and the second connecting rod 72 takes the third connection point 722 as the rotation center. Driven by the linkage rod 73, the second connection point 713 rotates from the side of the third connection point 722 close to the fixed portion 51 to the side of the third connection point 722 away from the fixed portion 51; accordingly, the fourth connection point 723 slidably connected to the movable seat 6 moves from one end close to the fixed portion 51 to the side away from the fixed portion 51, and at the same time moves to the side close to the pivot end 4, thereby increasing the distance between the door body 2 and the box body 1, so that the door body 2 will not interfere with external cabinets, etc. during the opening process.

[0052] Furthermore, when the movable seat 6 is in a closed state, the second connecting rod 72 includes a third section 724 extending from the third connection point 722 toward the fixed portion 51, and a fourth section 725 extending from an end of the third section 724 away from the third connection point 722 toward a direction away from the fixed portion 51, and the second linkage section 721 is arranged on the third section 724.

[0053] Furthermore, the first connecting rod 71 and the second connecting rod 72 are arranged on opposite sides of the connecting plate 52 in the vertical direction, and the linkage rod 73 is located between the first connecting rod 71 and the second connecting rod 72; the fixed seat 5 is recessed with a avoidance groove 53, and when the movable seat 6 is in a closed state, one end of the linkage rod 73 connected to the second connecting rod 72 is located in the avoidance groove 53. On the premise of ensuring the movement trajectory of the connecting rod assembly 7, the volume of the connecting rod assembly 7 in the folded state is further reduced, and the distance between the movable seat 6 and the fixed seat 5 is further reduced, thereby reducing the gap between the door body 2 and the box body 1 of the refrigerator 100.

[0054] In a specific embodiment of the present invention, the first connecting rod 71 is located on the upper side of the linkage rod 73, and the second connecting rod 72 is located on the lower side of the linkage rod 73. It can be understood that the upper side of one end of the linkage rod 73 is connected to the first linkage section 711, and the lower side of the other end of the linkage rod 73 is connected to the second linkage section 721, so that when the connecting rod assembly 7 is in a folded state, there will be no interference between the first connecting rod 71, the second connecting rod 72, and the linkage rod 73.

[0055] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0056] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hinge mechanism having a pivot end, the hinge mechanism comprising a fixed seat for mounting on a refrigerator body, a movable seat for mounting on a refrigerator door body, and a connecting rod assembly connected between the fixed seat and the movable seat, characterized in that: The connecting rod assembly comprises: A first connecting rod, wherein a first end of the first connecting rod is movably connected to a side of the fixed seat away from the pivot end, and a second end of the first connecting rod is movably connected to a side of the movable seat close to the pivot end; A second connecting rod, wherein the third end of the second connecting rod is movably connected to a side of the fixed seat close to the pivot end, and the fourth end is slidably connected to a side of the movable seat away from the pivot end; at least one of the first end, the second end, the third end, and the fourth end is slidably connected to the corresponding fixed seat or the movable seat; A linkage rod, the two ends of which are respectively connected to the first connecting rod and the second connecting rod, and are used to drive the first connecting rod and the second connecting rod to move along a preset trajectory; The hinge mechanism also includes a limiting structure arranged between the fixing seat and the connecting rod assembly.

2. The hinge mechanism according to claim 1, characterized in that: The limiting structure includes a guide groove provided on one of the fixing seat and the connecting rod assembly, and a guide shaft provided on the other one.

3. The hinge mechanism according to claim 2, characterized in that: The fixing seat has a fixing portion for fixing to the box body and a connecting plate for connecting to the connecting rod assembly; The connecting plate includes a first connecting plate connected to the first connecting rod and a second connecting plate connected to the second connecting rod, and the guiding groove is arranged on a side of the first connecting plate close to the second connecting plate.

4. The hinge mechanism according to claim 3, characterized in that: The first connecting plate is provided with a first connecting portion connected to the first connecting rod, and the guide groove takes the first connecting portion as a rotation center.

5. The hinge mechanism according to claim 3, characterized in that: The first connecting rod also includes a avoidance section and a first linkage section, and the first connection point is arranged on the avoidance section; when the movable seat is in a closed state, along the direction close to the pivot end, the avoidance section first extends obliquely toward the direction close to the fixed part, and then extends obliquely toward the direction away from the fixed part; the first linkage section first extends horizontally, and then extends obliquely toward the fixed seat close to the pivot end.

6. The hinge mechanism according to claim 5, characterized in that: The guide groove includes a front end limiting portion away from the fixing portion and a rear end limiting portion close to the fixing seat portion. When the guide shaft cooperates with the front end limiting portion, the door body is in a maximum open state; when the guide shaft cooperates with the rear end limiting portion, the door body is in a closed state.

7. The hinge mechanism according to claim 3, characterized in that: Along the vertical direction, the first connecting rod, the linkage rod and the second connecting rod are staggered; the fixed seat also includes a accommodating cavity located between the guide groove and the second connecting plate, and when the door body is in a closed state, the linkage rod is located in the accommodating cavity.

8. The hinge mechanism according to claim 1, characterized in that: The first end of the first connecting rod is provided with a first connection point rotatably connected to a side of the fixed seat away from the pivot end, and the second end is provided with a second connection point rotatably connected to a side of the movable seat close to the pivot end; The third end of the second connecting rod is provided with a third connection point rotatably connected to a side of the fixed seat close to the pivot end, and the fourth end is provided with a fourth connection point slidably connected to a side of the movable seat away from the pivot end; When the movable seat is in a closed state, the third connection point is located on a side of the second connection point away from the fixing portion.

9. A refrigerator, comprising a box body and a door body for opening and closing the box body, characterized in that: The refrigerator further comprises a hinge mechanism as described in any one of claims 1 to 8 connected between the box body and the door body.

10. The refrigerator according to claim 9, characterized in that: The door body has an end cover at one end close to the hinge mechanism, and the movable seat is integrally arranged with the end cover.

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