Hinge structure and refrigeration equipment

Abstract

The present invention relates to the technical field of refrigeration equipment, and discloses a hinge structure and refrigeration equipment, wherein the hinge structure is used to rotatably connect a box body and a door body. The hinge structure includes a symmetrically arranged upper hinge assembly and a lower hinge assembly. Each set of hinge assemblies includes a first hinge and a second hinge. The first rotating shaft, the second rotating shaft and the corresponding first notch and the second notch in the hinge structure, in conjunction with the limiting strip and the limiting profile, enable the door body to perform a special two-axis motion during the door opening and closing process. The motion trajectory of the free end of the door body includes a special motion trajectory line and a circular motion trajectory line. During the opening process of the door body, the door body will first tilt toward the outside of the refrigerator to avoid interference between the two door bodies. At the same time, the gap between the two door bodies can be reduced or even eliminated when the door is closed. The problem of cold leakage can be solved by cooperating with the existing sealing strip on the inside of the door body without the need to adopt a flip beam structure.

Description

Technical Field

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

[0002] A refrigerator is a household appliance used to store food and other items at low temperatures to maintain freshness. It typically consists of a freezer compartment for freezing food and a refrigerator compartment for preserving freshness. Different users have different requirements for refrigerator capacity, and large-capacity refrigerators often feature a double-door design.

[0003] In a double-door refrigerator, since the existing door body and the cabinet body are usually connected by a single-axis hinge, during the process of opening and closing the door body, due to the single-axis motion trajectory of the free end of the door body, if the two door bodies are close to each other, there will be a problem of mutual interference during the opening and closing process. In order to avoid the two door bodies from interfering with each other during the opening and closing process, a certain gap is usually left between the two door bodies. Since this gap is large, the sealing strip on the inner side of the door body cannot seal the gap between the two door bodies, and there is a problem of refrigerator leakage. Therefore, in existing double-door refrigerators, a flip beam is usually provided on one of the door bodies. The flip beam structure can flip during the process of closing the door body to seal the gap between the door bodies. However, since the flip beam structure rotates 90° when the door body is opened and closed, it will generate a lot of noise, and the flip beam structure is prone to failure after long-term use, causing inconvenience to users.

[0004] SUMMARY OF THE INVENTION

[0005] The technical problem solved by the present invention is: how to reduce the gap between the two doors of an existing single-axis double-door refrigerator in a closed state.

[0006] The purpose of the present invention is to provide a biaxial hinge connection structure with a special motion trajectory, which can ensure that the two doors do not interfere with each other during opening and closing, while reducing the gap between the two doors in the closed state. This structure can be sealed by combining with existing sealing strips on the inside of the door, without the need for a flip beam structure. Specifically, this can be achieved through the following technical solutions:

[0007] A hinge structure comprising:

[0008] A first hinge, wherein a first rotating shaft and a second rotating shaft are fixedly provided on the first hinge and a limiting profile is provided, wherein the limiting profile includes a first track segment and a second track segment that are connected; the second track segment is in an arc shape;

[0009] A second hinge, wherein a limit strip is fixedly provided on the second hinge and a first notch and a second notch are formed thereon, wherein the second notch includes a third track segment and a fourth track segment that are connected to each other, wherein the third track segment is in the same direction as the first notch, and the fourth track segment extends from one end of the third track segment to the edge of the second hinge and is open;

[0010] The first rotating shaft is inserted into the first notch and can move along the first notch, the second rotating shaft is inserted into the second notch and can move along the second notch, and the limiting bar is inserted into the limiting contour and can move along the limiting contour;

[0011] When the second rotating shaft is separated from the second notch, the limiting bar enters the second track segment.

[0012] In one embodiment of the present invention, the cross-sectional profile of the limiting strip is a rectangular structure, the length of the limiting strip matches the width of the first track segment, and the width matches the width of the second track segment.

[0013] In one embodiment of the present invention, the first track segment includes a starting segment and a transition segment that are connected to each other.

[0014] In one embodiment of the present invention, the size of one end of the opening of the fourth track segment is larger than the size of the other end.

[0015] In one embodiment of the present invention, the first hinge is a plate-shaped structure.

[0016] In one embodiment of the present invention, the first hinge includes a first plate and a second plate, the first plate and the second plate are fixedly connected via a transition plate, and there is a height difference between the first plate and the second plate.

[0017] In one embodiment of the present invention, the size of the first rotating shaft is greater than that of the second rotating shaft.

[0018] A refrigeration device includes a door body and a box body, which are rotatably connected by the hinge structure as described above, two first hinges are fixedly arranged on the box body and are respectively located at the two ends of the door body, and two second hinges are respectively fixedly connected to the two ends of the door body.

[0019] In one embodiment of the present invention, when the second rotating shaft is disengaged from the second notch, the door body opens to 27°.

[0020] A hinge structure and refrigeration equipment according to the present invention have at least one of the following technical effects:

[0021] Beneficial effects of the present invention:

[0022] The hinge structure in the present application includes a first rotating shaft, a second rotating shaft and corresponding first and second slots, and cooperates with the limit strips and limit profiles to enable the door body to perform a special dual-axis motion during the door opening and closing process. The motion trajectory of the free end of the door body includes a special motion trajectory line and a circular motion trajectory line. During the opening process of the door body, it will first tilt and move toward the outside of the refrigerator to avoid interference between the two door bodies. At the same time, the gap between the two door bodies can be reduced or even eliminated when the door is closed. The problem of cold leakage can be solved by cooperating with the existing sealing strip on the inside of the door body without the need to adopt a flip beam structure.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 This invention Figure 1 A schematic diagram of the partially enlarged structure at point A in the middle;

[0027] Figure 3 It is a schematic structural diagram of a top cross-section of the present invention;

[0028] Figure 4 This invention Figure 3 A schematic diagram of the structure with a partial enlargement at point B in the middle;

[0029] Figure 5 It is a schematic structural diagram of the present invention from a top view;

[0030] Figure 6 It is a structural schematic diagram of the hinge structure of the present invention in the closed state;

[0031] Figure 7 This is a schematic diagram of the hinge structure of the door when the door is opened 5°;

[0032] Figure 8 This is a schematic structural diagram of the hinge structure of the door body of the present invention when it is opened 10°;

[0033] Figure 9 This is a schematic diagram of the hinge structure of the door when the door is opened 27 degrees.

[0034] Figure 10 This is a schematic diagram of the hinge structure of the door when the door is opened 37 degrees.

[0035] Figure 11This is a structural schematic diagram of the movement trajectory of the door body when the door body of the present invention is fully opened;

[0036] Figure 12 It is a structural schematic diagram of the self-locking structure of the present invention;

[0037] Figure 13 This is a schematic structural diagram of the self-locking structure of the door body of the present invention when it is partially opened;

[0038] Figure 14 This invention Figure 13 A schematic diagram of the partially enlarged structure at point C in the middle;

[0039] Figure 15 It is a structural schematic diagram of the fixing part of the present invention.

[0040] The reference numerals in the figure are: 1. Box body; 2. Door body; 3. Door seal body; 4. Suction strip; 5. Magnetic strip; 6. Main body; 7. Contact part; 8. Support part; 9. Protrusion; 10. Connector; 11. First hinge; 12. Second hinge; 13. First rotating shaft; 14. Second rotating shaft; 15. Limiting contour; 16. Limiting strip; 17. First slot; 18. Second slot; 19. Movable part; 20. Force storage slope; 21. Reference plane; 22. Special motion trajectory; 23. Circular motion trajectory. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0043] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0044] See also Figure 1-15 The present invention is a refrigeration device. The refrigeration device provided in the embodiment of the present application includes a box body 1 and a door body 2. The refrigeration device can be a low-temperature storage device such as a refrigerator, a freezer, an ice bar, etc. Of course, the refrigeration device can also be other devices with a box body 1 and a door body 2 structure, and the door body 2 structure is required to be able to rotate relative to the box body 1. The box body 1 serves as the main body of the refrigerator, and a refrigeration chamber and / or a freezing chamber for accommodating items can be opened therein. The door body 2 can be rotatably connected to the box body 1 to play a sealing role. The following description of the refrigeration device in the embodiment of the present application is explained using a refrigerator as an example. This example is only for discussion needs and does not limit the specific form of the refrigeration device.

[0045] When the door body 2 is rotatably connected to the cabinet body 1 through the hinge assembly, for a double-door refrigerator, during the process of opening and closing the door body 2, in order to avoid interference between the two door bodies 2, there is usually a gap between the two door bodies 2, and there is a problem of cold leakage in this gap. In order to avoid cold leakage, an existing solution is to set a flip beam structure on one door body 2. However, since the flip beam structure will rotate 90° when the door body 2 is opened and closed, it will generate a lot of noise, and the flip beam structure is prone to failure after long-term use, which will bring inconvenience to the user.

[0046] Example 1

[0047] See also Figure 1-5 In this embodiment, the refrigerator includes a refrigerator body 1 and a door body 2. A door seal structure is provided on a side of the door body 2 adjacent to the refrigerator body 1. The door seal structure can be detachably connected to the door body 2, specifically by a snap connection or a removable plug-in connection. The door body 2 can be provided with a slot, and a snap-in strip is fixedly provided on the door seal structure to removably engage with the door body 2.

[0048] See also Figure 1-5 The door seal structure can include a door seal body 3 made of a flexible material and a suction strip 4. The door seal body 3 and the suction strip 4 can be configured as an integral structure. The suction strip 4 can include a transverse portion and a vertical portion. The transverse portion and the vertical portion are sequentially connected and fixedly connected to form a rectangular shape, thereby providing a sealing effect corresponding to the edge structure of the door body 2. The transverse portion can correspond to the upper and lower ends of the door body 2, and the vertical portion can correspond to the side positions of the door body 2.

[0049] See also Figure 1-5The direction of the suction strip 4 can be set at an angle to the direction of the door seal body 3. The suction strip 4 can be integrally connected to a vertical portion located at the free end of the door body 2, or the ends of the suction strip 4 can be integrally fixedly connected to the upper and lower ends and the end of the transverse portion. The suction strip 4 can be fixedly connected to the door stopper body by a connecting portion made of a flexible material. The connecting portion can be bent to achieve the effect of connection, transition, and forming an angle.

[0050] See also Figure 1-5 The suction strips 4 may be provided with an installation cavity, in which a magnetic strip 5 is provided. When in use, the two pairs of suction strips 4 can be attracted and docked together by the magnetic force of the magnetic strip 5, thereby sealing the gap between the two door bodies 2. The suction strips 4 may include a main body 6, a contact portion 7, a support portion 8, a protrusion 9, and a connector 10, etc. The installation cavity is provided in the main body 6. One end of the contact portion 7 can be fixedly connected to the main body 6. The contact portion 7 is an arc-shaped structure, which is arranged to protrude relative to the main body 6, so that the contact portions 7 of the two pairs of suction strips 4 can achieve a better sealing effect when docked and in contact. The end of the contact portion 7 away from the main body 6 is fixedly connected to the support portion 8, and the end of the support portion 8 away from the contact portion 7 is fixedly connected to the main body 6. The support portion 8 is arranged between the main body 6 and the contact portion 7 to serve as a connection to ensure the strength performance of the contact portion 7. A protrusion 9 is provided within the space enclosed by the contact portion 7 and the main body 6. The protrusion 9 can be a portion of the main body 6 that protrudes outward toward the contact portion 7 to form a V- or U-shaped structure. This provides support for the contact portion 7 when it deforms significantly, while also enhancing the overall structural strength of the suction strip 4. The connector 10 can be integrally fixed to the main body 6. The connector 10 can be configured as a plug structure, mating with a corresponding notch on the door body 2 to provide a connection and enhance the stability of the suction strip 4.

[0051] See also Figure 1-5 The door seal structure in this embodiment features a suction strip 4 with a magnetic strip 5. When the doors 2 of the side-by-side refrigerator are closed, the suction strips 4 on either side engage and attract each other under the action of magnetic force, thereby sealing the gap between the two doors 2 and achieving a seal and insulation. Compared with existing flip beam structures used to prevent cold air leakage, this structure is simpler and can significantly reduce costs. It also eliminates the problems of existing flip beam structures, such as loud noise during opening and closing, and the tendency to fail after long-term use.

[0052] Example 2

[0053] See also Figure 1-13This embodiment provides a hinge structure for rotatably connecting a refrigerator body 1 and a door body 2. The hinge structure includes symmetrically arranged upper and lower hinge assemblies. Each hinge assembly includes a first hinge 11 and a second hinge 12. The two first hinges 11 are fixedly mounted on the refrigerator body 1 and located at the upper and lower ends of the door body 2, respectively. The two second hinges 12 are fixedly connected to the upper and lower ends of the door body 2, respectively. The first hinge 11 and the second hinge 12 can be plate-shaped structures. The first hinge 11 and the refrigerator body 1, and the second hinge 12 and the door body 2 can be fixedly connected using rivets, bolts, or other fixing methods. When the first hinge 11 is located at the top or bottom of the refrigerator, the first hinge 11 can include a first plate and a second plate, which are fixedly connected via a transition plate and have a height difference between the first and second plates. In this way, the first plate can be used for fixed connection to the refrigerator body 1, and the second plate can be used to mount the second hinge 12 of the door body 2 structure, thereby expanding the installation space. When the first hinge 11 is located in the middle of the box body 1 , it may include a first plate and a second plate that are bent and connected, the bottom plate is used to connect with the box body 1 , and the second plate is used to connect with the second hinge 12 .

[0054] See also Figure 1-5 The first hinge 11 is fixedly provided with a first rotating shaft 13 and a second rotating shaft 14. The aforementioned fixed arrangement can be one-piece molding, welding, riveting or other fixed connection methods. The diameter of the first rotating shaft 13 can be larger than the diameter of the second rotating shaft 14 so that it can be used as the main supporting rotating shaft. The first hinge 11 is provided with a limiting profile 15, and the limiting profile 15 includes a first track segment and a second track segment that are connected; the first track segment and the second track segment are set at an angle, and the second track segment is in the shape of a circular arc; the second track segment is concentrically arranged with the first rotating shaft 13.

[0055] See also Figure 1-5 A limit strip 16 is fixedly mounted on the second hinge 12 and defines a first notch 17 and a second notch 18. The second notch 18 includes a third and fourth track segments that are interconnected. The third track segment is aligned with the first notch 17, and the fourth track segment extends to the edge of the second hinge 12 at one end away from the third track segment and is open. One end of the fourth track segment is larger than the other end, thereby facilitating smoother entry and exit of the second rotating shaft 14. The first rotating shaft 13 is inserted into and movable along the first notch 17, while the second rotating shaft 14 is inserted into and movable along the second notch 18. The limit strip 16 is inserted into and movable along the limiting profile 15.

[0056] See also Figure 1-5 The first track segment may include a starting segment and a transition segment that are interconnected. The transition segment is used to form a transition between the first track segment and the second track segment, thereby improving the smoothness of the movement of the limit bar 16 within the limit profile 15. The cross-sectional profile of the limit bar 16 can be a rectangular structure, with its length matching the width of the first track segment and its width matching the width of the second track segment. This allows it to move within the limit profile 15 at a fixed angle, improving the stability of the door body 2 during opening and closing.

[0057] See also Figure 6-11 The following is an illustration of the working process of this embodiment using only the accompanying drawings as examples:

[0058] During the door opening process, the door body 2 first tilts relative to the box body 1 (at Figure 6 The free end of the door body 2 moves along the special motion trajectory 22 shown in the figure (the trajectory line of the door body 2 opening 0-14°), and during this process, the first rotating shaft 13 moves from the lower left end to the upper right end of the first slot 17, the second rotating shaft 14 moves along the third trajectory to the fourth trajectory segment, and the limit bar 16 moves through the starting end of the first trajectory segment to the second trajectory segment, that is, the connecting position of the first trajectory segment and the second trajectory segment.

[0059] The movement of the second rotating shaft 14 in the fourth trajectory segment then serves as a transition from the special motion trajectory 22 to the circular motion trajectory 23. During this process, the stop bar 16 operates within the transition segment and the starting section of the second trajectory segment until the second rotating shaft 14 is released from the second notch 18, at which point the door body 2 opens to 27°. The door body 2 completes the transition from the special motion trajectory 22 to the circular motion trajectory 23.

[0060] In the subsequent process, the door body 2 will rotate around the first rotating shaft 13, and the free end of the door body 2 will move along the circular motion trajectory 23 shown in the figure. During this process, the limit bar 16 moves along the second trajectory segment. The cooperation between the limit profile 15 and the limit bar 16 prevents the door body 2 from lateral movement or insufficient limit to prevent rotation. The free end of the first rotating shaft 13 is restrained by the first notch 17, thereby causing the door body 2 to rotate in a circular motion around the first rotating shaft 13 until the door body 2 is completely opened. The closing process is the opposite of the above-mentioned opening process.

[0061] The hinge structure in this embodiment can be used alone. The double-axis hinge structure with a special trajectory is used to connect the door body 2 and the box body 1, so that the door body 2 moves outward for a distance during the opening process, thereby avoiding interference with the other door body 2. In this way, the gap between the two doors 2 of the double-door refrigerator can be reduced as much as possible or even eliminated. In conjunction with the existing sealing strip on the inside of the door body, the problem of cold leakage through the gap in the refrigerator door body 2 can be eliminated, and there is no need to use a flip beam structure for sealing.

[0062] This embodiment can also be set in combination with embodiment 1. The existing refrigerator door bodies 2 are mostly uniaxial movements. After adopting the suction strip 4 in embodiment 1, the door body 2 has a large resistance due to the suction force when opening, and there is severe wear of the suction strip 4 during the opening and closing process of the door body 2. The hinge structure in this embodiment is set on the basis of the suction strip 4 in embodiment 1. Due to the initial special trajectory of the door body 2 during the opening process, the door body 2 will first move away from the other door body 2, rather than directly rotating to open the door body. This can greatly reduce the opening resistance of the door body 2, making the opening and closing of the door body 2 more convenient.

[0063] Example 3

[0064] See also Figure 12-15 This embodiment provides a self-locking structure for self-locking the door body 2 relative to the housing 1. The self-locking structure can be installed at the lower and / or upper end of the door body 2. Specifically, the self-locking structure includes a fixed portion and a movable portion 19. The fixed portion can be a separate component fixed to the housing 1, or it can be the first hinge 11 described in Example 2. In this embodiment, the first hinge 11 is used as the fixed portion to reduce the number of components. The side surface of the fixed portion includes a reference surface 21 and a force-storage slope 20 connected to the reference surface 21. The movable portion 19 is fixedly connected to the door body 2 and can move with the door body 2. The movable portion 19 can include a first rod and a second rod arranged at an angle. The first and second rods are located on the same side of the connection point, and the motion trajectory of the free end of the second rod intersects the force-storage slope 20. The movable portion 19 can have a V-shaped structure. The first and second rods can be fixedly connected by a third rod, giving the movable portion 19 a U-shaped structure. The connection points of the third rod to the first and second rods can each have an arc-shaped transition to ensure the energy storage performance of the movable portion 19. The movable portion 19 can be formed by an integral molding process, thereby reducing the production process flow.

[0065] See also Figure 12-15During the door closing process, the movable portion 19 rotates with the door body 2 until it moves to the fixed portion. The free end of the second rod contacts and abuts the force-storage inclined surface 20. Under the action of the door closing force, the movable portion 19 undergoes a certain deformation and accumulates force until the free end of the second rod passes over the force-storage inclined surface 20 and then contacts the reference surface 21. At this time, the energy stored in the movable portion 19 is released, allowing the door body 2 to automatically close after closing to a certain angle. When the door body 2 is in the closed state, the free end of the second rod abuts the reference surface 21, which has a self-locking effect on the door body 2. At this time, the movable portion 19 can be in a slightly deformed state to ensure the tightness of the door body 2.

[0066] See also Figure 12-15 The edges on both sides of the movable portion 19 protrude outward to form reinforced edges. This creates a groove extending along the movable portion 19 in the middle of the side surface, reducing component weight while maintaining its strength. The free end of the second rod can be provided with a contact slope. This improves the smoothness of the second rod's free end contacting the force storage slope 20 and moving along the force storage slope 20 toward the reference plane 21.

[0067] See also Figure 12-15 , a self-locking bevel is provided at one end of the reference plane 21 close to the force storage bevel 20. One end of the self-locking bevel is connected to the reference plane 21, and the other end is connected to the force storage bevel 20, and is protruding from the reference plane 21. The angle between the self-locking bevel and the reference plane 21 can be 2°, or other angles. The specific setting can be selected according to actual conditions, but the angle should not be too large. In this way, a small slope structure is formed by setting the self-locking bevel. When the door body 2 is in a closed state, the free end of the movable part 19 (the second rod) abuts against the self-locking bevel, thereby improving the self-locking ability of the self-locking structure of the device. The force storage bevel 20 and the reference plane 21 or the self-locking bevel have a smooth transition. Thereby ensuring the smoothness of the transition of the free end of the movable part 19 along the force storage bevel 20 to the reference plane 21.

[0068] This embodiment can be used alone to achieve self-locking of the door body 2 relative to the box body 1. This embodiment can also be used in combination with Example 1. After adopting the suction strip 4 structure in Example 1, due to the suction characteristics of the suction strip 4, one door body 2 will affect the other door body 2 during the opening and closing process. After adopting this structure, the self-locking of the two door bodies 2 of the double-door structure is achieved, so that the opening and closing processes of the two door bodies 2 are independent and will not affect each other. This embodiment can also be used in combination with Example 1 and Example 2. The hinge structure in Example 2 can solve the opening and closing resistance problem in Example 1. On this basis, the use of this embodiment can solve the problem of the two door bodies 2 of the double-door structure affecting each other during the opening and closing process. At the same time, the self-locking structure of this embodiment matches the special motion trajectory 22 of the hinge structure in Example 2, fully ensuring the self-locking ability.

[0069] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A hinge structure, characterized in that: include: A first hinge (11), wherein a first rotating shaft (13) and a second rotating shaft (14) are fixedly provided on the first hinge (11), and a limiting profile (15) is provided, wherein the limiting profile (15) includes a first track segment and a second track segment that are connected; the second track segment is in an arc shape, and the second track segment is concentrically arranged with the first rotating shaft (13); A second hinge (12), wherein a limit strip (16) is fixedly provided on the second hinge (12), and a first notch (17) and a second notch (18) are provided, wherein the second notch (18) includes a third track segment and a fourth track segment that are connected, wherein the third track segment is in the same direction as the first notch (17), and the fourth track segment extends from one end of the third track segment to the edge of the second hinge (12) and is provided with an opening; The first rotating shaft (13) is inserted into the first notch (17) and can move along the first notch (17), the second rotating shaft (14) is inserted into the second notch (18) and can move along the second notch (18), and the limiting strip (16) is inserted into the limiting profile (15) and can move along the limiting profile (15); When the second rotating shaft (14) is separated from the second notch (18), the limiting bar (16) enters the second track segment.

2. A hinge structure according to claim 1, characterized in that: The cross-sectional profile of the limiting strip (16) is a rectangular structure, the length dimension of which matches the width dimension of the first track segment, and the width dimension of which matches the width dimension of the second track segment.

3. A hinge structure according to claim 2, characterized in that: The first track segment includes a starting segment and a transition segment which are connected to each other.

4. A hinge structure according to claim 1, characterized in that: The size of one end of the opening of the fourth track segment is larger than the size of the other end.

5. The hinge structure according to claim 1, characterized in that: The first hinge (11) is a plate-shaped structure.

6. A hinge structure according to claim 5, characterized in that: The first hinge (11) comprises a first plate and a second plate, the first plate and the second plate are fixedly connected via a transition plate, and there is a height difference between the first plate and the second plate.

7. The hinge structure according to claim 1, characterized in that: The size of the first rotating shaft (13) is larger than the size of the second rotating shaft (14).

8. A refrigeration device, comprising a door body (2) and a box body (1), characterized in that: The door body (2) and the box body (1) are rotatably connected via a hinge structure according to any one of claims 1 to 7.

9. A refrigeration device according to claim 8, characterized in that: When the second rotating shaft (14) is disengaged from the second notch (18), the door body (2) is opened to 27°.

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