Hinge structure and refrigeration equipment

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a hinge structure and refrigeration equipment, and the hinge structure is used for rotatably connecting a box body and a door body. The hinge structure comprises an upper hinge assembly and a lower hinge assembly which are symmetrically arranged. Each hinge assembly comprises a first hinge and a second hinge. A first rotating shaft, a second rotating shaft and a first notch and a second notch which correspond to each other in the hinge structure are matched with the limiting strip and the limiting outline, so that the door body does double-shaft special motion in the door body opening and closing process, and the motion trail of the free end of the door body comprises a special motion trail line and a circular motion trail line; the door bodies incline and move towards the outer side of the refrigerator in the opening process, so that interference between the two door bodies is avoided, meanwhile, a gap between the two door bodies can be reduced or even eliminated in the door closing state, the problem of cold leakage can be solved by being matched with an existing sealing strip on the inner side of the door body, and an overturning beam structure does not need to be adopted.

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 in a low-temperature environment to keep them fresh. It usually consists of a freezer and a refrigerator. The freezer is used to freeze food, while the refrigerator is used to keep food fresh. Different users have different requirements for refrigerator capacity. Among them, large-capacity refrigerators often use a double-door structure.

[0003] In a double-door refrigerator, since the existing door body and the box 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 the gap is large, the sealing strip on the inner side of the door body cannot achieve the sealing of the gap between the two door bodies, and there is a problem of refrigerator leakage. Therefore, in the existing double-door refrigerator, a flip beam is usually provided on one of the door bodies. The flip beam structure can flip during the closing process of the door body to play a role in closing the gap between the door bodies. However, since the flip beam structure will rotate 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, which brings 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 the existing single-axis double-door refrigerator in the 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 door bodies do not interfere with each other during the opening and closing process, while reducing the gap between the two door bodies in the closed state, and can achieve sealing by cooperating with the existing sealing strip on the inner side of the door body, without the need for a flip beam structure. Specifically, it 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 disposed on the first hinge, and a limiting contour is provided, wherein the limiting contour includes a first track segment and a second track segment which are connected; and the second track segment is in an arc shape;

[0009] A second hinge, wherein a limit strip is fixedly arranged on the second hinge, and a first notch and a second notch are provided, wherein the second notch comprises a third track segment and a fourth track segment which are connected, wherein the third track segment is in the same direction as the first notch, and an end of the fourth track segment which is away from the third track segment extends to an edge of the second hinge and is provided with an opening;

[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 limit strip is a rectangular structure, the length of which matches the width of the first track segment, and the width of which 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 which 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-like structure.

[0016] In one solution 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 the size of the second rotating shaft.

[0018] A refrigeration device comprises a door body and a box body, wherein the door body and the box body are rotatably connected via the hinge structure as described above, two first hinges are fixedly arranged on the box body and are respectively located at 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 is opened to 27°.

[0020] A hinge structure and a refrigeration device 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 slots 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 given in part in the following description and in part will be obvious from the following description, or will be learned through 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 easily understood from the description of the embodiments in conjunction with the following drawings, in which:

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

[0026] Figure 2 The present invention Figure 1 A schematic diagram of the structure with a partial enlargement at the center;

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

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

[0029] Figure 5 It is a schematic diagram of the structure 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 a closed state;

[0031] Figure 7 It is a structural schematic diagram of the hinge structure when the door body of the present invention is opened 5°;

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

[0033] Fig. 9 It is a structural schematic diagram of the hinge structure when the door body of the present invention is opened 27 degrees;

[0034] Fig.10 It is a structural schematic diagram of the hinge structure when the door body of the present invention is opened 37 degrees;

[0035] Fig.11It 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] Fig.12 It is a structural schematic diagram of the self-locking structure of the present invention;

[0037] Fig.13 It is a structural schematic diagram of the self-locking structure of the present invention when the door body is partially opened;

[0038] Fig.14 The present invention Fig.13 A schematic diagram of the structure with a partial enlargement at C in the middle;

[0039] Fig.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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are 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., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0043] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating 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, so as to play a sealing role. The description of the refrigeration device in the following embodiment of the present application is explained by taking 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 opening and closing of 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 of the door bodies 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 brings inconvenience to the user.

[0046] Example 1

[0047] See also Figure 1-5 In this embodiment, the refrigerator includes a box body 1 and a door body 2, and a door sealing structure is provided on a side of the door body 2 close to the box body 1. The door sealing structure can be detachably connected to the door body 2, and the specific connection method can be a snap connection or a movable plug connection. A card slot can be opened on the door body 2, and a card strip is fixedly provided on the door sealing structure to be movably connected to the door body 2.

[0048] See also Figure 1-5 The door seal structure may include a door seal body 3 made of a flexible material and a suction strip 4, and the door seal body 3 and the suction strip 4 may be set as an integral structure. The suction strip 4 may include a transverse portion and a vertical portion, and the transverse portion and the vertical portion are successively connected and fixed to form a rectangle, thereby playing a sealing role corresponding to the edge structure of the door body 2. The transverse portion may correspond to the upper and lower ends of the door body 2, and the vertical portion may correspond to the side position of the door body 2.

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

[0050] See also Figure 1-5 , the suction strip 4 may be provided with an installation cavity, in which a magnetic strip 5 is provided, and when in use, the two pairs of suction strips 4 can be adsorbed and docked by the magnetic force of the magnetic strip 5, thereby playing the effect of closing the gap between the two door bodies 2. The suction strip 4 may include a main body 6, a contact part 7, a support part 8, a protrusion 9 and a connector 10, etc., and the installation cavity is provided in the main body 6. One end of the contact part 7 can be fixedly connected to the main body 6, and the contact part 7 is an arc-shaped structure, which is arranged to protrude relative to the main body 6, so that the contact parts 7 of the two pairs of suction strips 4 can play a better sealing effect when docking and contacting. The end of the contact part 7 away from the main body 6 is fixedly connected to the support part 8, and the end of the support part 8 away from the contact part 7 is fixedly connected to the main body 6. The support part 8 is arranged between the main body 6 and the contact part 7 to play a connecting role, and ensure the strength performance of the contact part 7. A protrusion 9 is provided in the space enclosed by the contact portion 7 and the main body 6. The protrusion 9 may be a part of the structure of the main body 6 protruding outward toward the contact portion 7 to form a V or U-shaped structure, so as to support the contact portion 7 when the contact portion 7 is greatly deformed, and at the same time, the overall structural strength of the suction strip 4 can be improved. The connector 10 may be fixedly arranged integrally with the main body 6. The connector 10 may be arranged as a plug structure, which is used to cooperate with the corresponding notch on the door body 2 to play a connecting role, and is used to improve the stability of the suction strip 4.

[0051] See also Figure 1-5 In this embodiment, the door sealing structure is provided with a suction strip 4 with a magnetic strip 5. After the door body 2 of the double-door refrigerator is closed, the suction strips 4 on both sides are butted and adsorbed under the action of magnetic force, thereby closing the gap between the two door bodies 2 to achieve a sealing and heat preservation effect. Compared with the existing flip beam structure for preventing cold leakage, the structure is simpler and the cost can be greatly reduced. At the same time, the problem of large noise during the opening and closing process of the existing flip beam structure and easy failure after long-term use is eliminated.

[0052] Example 2

[0053] See also Figure 1-13, this embodiment provides a hinge structure, which is used to rotatably connect the cabinet 1 and the door body 2. The hinge structure includes an upper hinge assembly and a lower hinge assembly symmetrically arranged. Each set of hinge assemblies includes a first hinge 11 and a second hinge 12. The two first hinges 11 are fixedly arranged on the cabinet 1 and are respectively located at the upper and lower ends of the door body 2, and the two second hinges 12 are respectively fixedly connected to the upper and lower ends of the door body 2. The first hinge 11 and the second hinge 12 can be a plate-like structure. The first hinge 11 and the cabinet 1, and the second hinge 12 and the door body 2 can be fixedly connected by a rivet structure, a bolt structure 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, and 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. In this way, the first plate can be used to be fixedly connected to the cabinet 1, and the second plate can be used to install the second hinge 12 of the door body 2 structure, and the installation space can be expanded. 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 be connected to the box body 1 , and the second plate is used to be connected to 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, and the aforementioned fixed setting 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 as to be used as the main supporting rotating shaft. The first hinge 11 is provided with a limiting contour 15, and the limiting contour 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 an arc shape; the second track segment is set concentrically with the first rotating shaft 13.

[0055] See also Figure 1-5 The second hinge 12 is fixedly provided with a limit strip 16, and is provided with a first notch 17 and a second notch 18. The second notch 18 includes a third track segment and a fourth track segment that are connected. The third track segment is in the same direction as the first notch 17. The fourth track segment extends to the edge of the second hinge 12 at one end away from the third track segment and is opened. The size of one end of the opening of the fourth track segment is larger than the size of the other end, so that the second shaft 14 can be more smoothly disengaged and entered. The first shaft 13 is inserted into the first notch 17 and can move along the first notch 17. The second shaft 14 is inserted into the second notch 18 and can move along the second notch 18. The limit strip 16 is inserted into the limit contour 15 and can move along the limit contour 15.

[0056] See also Figure 1-5 The first track segment may include a starting segment and a transition segment that are connected and arranged in a continuous manner, and 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 strip 16 in the limit profile 15. The cross-sectional profile of the limit strip 16 may be a rectangular structure, and its length dimension matches the width dimension of the first track segment, and its width dimension matches the width dimension of the second track segment. Thus, it can move in the limit profile 15 at a fixed angle, improving the stability of the door body 2 during the opening and closing process.

[0057] See also Figure 6-11 The following is a description 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 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 strip 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] Then, the movement process of the second rotating shaft 14 in the fourth track segment can be used as a transition process of the special motion track 22 line to the circular motion track 23 line. In this process, the limit bar 16 is located in the transition segment and the starting segment of the second track segment and moves until the second rotating shaft 14 escapes from the second notch 18, and the door body 2 is opened to 27 degrees. The movement track of the door body 2 completes the transformation process from the special motion track 22 line to the circular motion track 23 line.

[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 track 23 shown in the figure. In this process, the limit bar 16 moves along the second track segment, and the cooperation between the limit profile 15 and the limit bar 16 prevents the door body 2 from lateral movement and insufficient limit and inability to rotate. The free end of the first rotating shaft 13 is limited by the first notch 17, so that the door body 2 will rotate around the first rotating shaft 13 as the rotation center 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 to avoid interference with the other door body 2. In this way, the gap between the two door bodies 2 of the double-door refrigerator can be reduced as much as possible or even eliminated. The problem of cold leakage through the gap in the refrigerator door body 2 can be eliminated by combining with the existing sealing strip on the inside of the door body, without the 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 single-axis movements. After adopting the suction strip 4 in embodiment 1, the door body 2 has a large resistance when opening due to the suction force, 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. The movement trajectory, thereby greatly reducing 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 of the door body 2 relative to the box body 1, and the self-locking structure can be arranged at the lower end and / or the upper end of the door body 2. Specifically, the self-locking structure includes a fixed part and a movable part 19, and the fixed part can be an independent component fixed on the box body 1, or can be the first hinge 11 described in Example 2. In this embodiment, the first hinge 11 is used as the fixed part structure to reduce the number of components. The side of the fixed part includes a reference plane 21 and a force storage slope 20 connected to the reference plane 21; the movable part 19 is fixedly connected to the door body 2 and can move with the door body 2. The movable part 19 may include a first rod and a second rod set at an angle, the first rod and the second rod are located on the same side of the connection position of the two, and the motion trajectory of the free end of the second rod intersects with the force storage slope 20. The movable part 19 may be a V-shaped structure. The first rod and the second rod can be fixedly connected by a third rod so that the movable part 19 is a U-shaped structure. The positions where the third rod is connected to the first rod and the second rod can be arc-shaped transitions respectively to ensure the energy storage performance of the movable part 19. The movable portion 19 can be formed by an integral molding process to reduce the production process flow.

[0065] See also Figure 12-15In the process of closing the door, the movable part 19 rotates with the door body 2 until it moves to the fixed part, and the free end of the second rod contacts and abuts the force storage slope 20. Under the action of the door closing force, the movable part 19 is deformed to a certain extent and accumulates force until the free end of the second rod passes over the force storage slope 20 and then contacts the reference surface 21. At this time, the energy accumulated in the movable part 19 is released, so that the door body 2 can be automatically closed after closing to a certain angle. When the door body 2 is in the closed state, the free end of the second rod abuts on the reference surface 21 to achieve a self-locking effect on the door body 2. At this time, the movable part 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 part 19 protrude outward to form reinforced edges. A groove extending along the movable part 19 is formed in the middle of the side of the movable part 19, which can lighten the parts while ensuring their strength performance. The free end of the second rod can be provided with a contact slope. Thereby improving the smoothness of the free end of the second rod 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 the actual situation, 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 embodiment 1. After adopting the suction strip 4 structure in embodiment 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-leaf 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 embodiment 1 and embodiment 2. The hinge structure in embodiment 2 can solve the problem of switch resistance in embodiment 1. On this basis, the use of this embodiment can solve the problem of the two door bodies 2 of the double-leaf door 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 embodiment 2, fully ensuring the self-locking ability.

[0069] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application 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 arranged on the first hinge (11), and a limiting contour (15) is provided, wherein the limiting contour (15) comprises a first track segment and a second track segment which are connected; and the second track segment is in an arc shape; A second hinge (12), a limit strip (16) is fixedly arranged on the second hinge (12), and a first notch (17) and a second notch (18) are provided, the second notch (18) comprises a third track segment and a fourth track segment which are connected, 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 away from 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 contour (15) and can move along the limiting contour (15); When the second rotating shaft (14) is separated from the second notch (18), the limiting strip (16) enters the second track section.

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. A 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. A hinge structure according to claim 1, characterized in that: The size of the first rotating shaft (13) is greater 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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