Refrigerator

Abstract

The utility model relates to a refrigerator which comprises a refrigerator body (10) provided with a pick-and-place opening and a first connecting piece. The door body (20) is connected to the box body (10) so as to open or close the pick-and-place opening, and a second connecting piece is arranged on the door body (20); wherein one of the first connecting piece and the second connecting piece is provided with a hinge shaft (3), the other one of the first connecting piece and the second connecting piece is provided with a guide groove (52), and the hinge shaft (3) is located in the guide groove (52); during the opening of the door body (20) from the closed state to the maximum angle, there is a first operating phase in which the articulated shaft (3) is moved from the first end (M) to the second end (N) of the guide groove (52), and a second operating phase in which the articulated shaft (3) is held at the second end (N) of the guide groove (52).

Description

Technical Field

[0001] The present disclosure relates to a refrigerator. Background Art

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature and is also a product for storing food at low temperature to prevent food from spoiling quickly, and is widely used in daily life. At present, the market demand for built-in refrigerators is increasing day by day, and it is one of the main future development trends. To meet the product requirements of built-in refrigerators, ensuring that the door body can be freely opened after being embedded has become a major difficulty for built-in products.

[0003] In order to make the door body avoid the box body and the cabinet during the refrigerator door opening process, in the related art, multi-track coincidence methods such as setting a double axis or a multi-axis are used for orbit change. However, it is found in the actual use process that the door body gets stuck during the door opening and closing process, the operation is not continuous, and the feel is poor, affecting the user experience. Summary of the Utility Model

[0004] Some embodiments of the present disclosure provide a refrigerator that can improve the smoothness during the door opening process.

[0005] The present disclosure provides a refrigerator, including:

[0006] A box body provided with a taking and placing opening and a first connecting member; and

[0007] A door body connected to the box body to open or close the taking and placing opening, and a second connecting member is provided on the door body;

[0008] Wherein, a hinge shaft is provided on one of the first connecting member and the second connecting member, and a guide groove is provided on the other of the first connecting member, and the hinge shaft is located in the guide groove;

[0009] During the process of the door body opening from the closed state to the maximum angle, there are a first operation stage and a second operation stage. In the first operation stage, the hinge shaft moves from the first end of the guide groove to the second end, and in the second operation stage, the hinge shaft remains at the second end of the guide groove.

[0010] In some embodiments, the refrigerator further includes a door seal, and the door seal is connected to the wall surface of the door body close to the box body;

[0011] In the first operation stage, the hinge shaft moves along the guide groove around a virtual axis, and the position of the virtual axis is configured such that the door body and the door seal do not interfere with the box body in the first operation stage, and the door body does not extend beyond the extension surface of the side wall of the box body in the width direction of the refrigerator.

[0012] In some embodiments, the guiding groove is arc-shaped. The second end of the guiding groove is closer to the cabinet body than the first end of the guiding groove in the depth direction of the refrigerator, and the second end of the guiding groove is closer to the extending surface of the side wall of the cabinet body than the first end of the guiding groove in the width direction.

[0013] In some embodiments, the position of the first end of the guiding groove is configured such that if the door body is opened with it as the fixed axis, the door body interferes with the extending surface of the side wall of the cabinet body within the first angle range a, the door body interferes with the cabinet body within the second angle range b, and the door seal interferes with the cabinet body within the third angle range c. The first angle range a, the second angle range b, and the third angle range c are all smaller than the preset angle.

[0014] The central angle d of the guiding groove relative to the virtual axis is not less than the maximum value among the first angle range a, the second angle range b, and the third angle range c.

[0015] In some embodiments, the door body includes a first side wall and a second side wall oppositely arranged in the width direction of the refrigerator, and a third side wall and a fourth side wall oppositely arranged in the depth direction of the refrigerator. The first side wall is closer to the connection position between the door body and the cabinet body than the second side wall, and the third side wall is farther from the cabinet body than the fourth side wall.

[0016] The first distance L between the first end of the guiding groove and the third side wall is not less than the first distance threshold; and / or the second distance L2 between the second end of the guiding groove and the first side wall is not less than the second distance threshold.

[0017] In some embodiments, the refrigerator further includes a limiting bushing. The limiting bushing is inserted into the guiding groove and abuts against the edge of the guiding groove. The limiting bushing has an inner hole. The hinge shaft has a first shaft section and a second shaft section with different cross-sectional shapes. In the first operating stage, the first shaft section cooperates with the inner hole to transmit the acting force. In the second operating stage, the second shaft section can rotate in the inner hole to release the transmission of the acting force.

[0018] In some embodiments, the inner hole is a polygonal hole, the cross-section of the first shaft section is a polygon adapted to the polygonal hole, and the cross-section of the second shaft section is a circle inscribed in the polygonal hole.

[0019] In some embodiments, the length of the first shaft section is less than the length of the second shaft section.

[0020] In some embodiments, a protrusion is provided at the edge of at least a part of the outer periphery of the guiding groove. The limiting bushing includes a sliding section and a limiting section. The sliding section is located in the guiding groove, and the limiting section is connected to the outer end of the sliding section and abuts against the protrusion.

[0021] In some embodiments, the door body is configured to switch the inner hole to cooperate with the second shaft section by moving in the height direction of the refrigerator before entering the second operating stage.

[0022] In some embodiments, the door body is configured to switch the inner hole to cooperate with the second shaft section by rising a preset distance before entering the second operation stage.

[0023] In some embodiments, the first connecting member includes a first upper connecting member, the hinge shaft includes a first hinge shaft, the first hinge shaft extends downward toward the first upper connecting member, and the first shaft section is farther from the first upper connecting member than the second shaft section;

[0024] The limiting shaft sleeve includes a first limiting shaft sleeve, and there is a spaced space between the bottom surface of the first limiting shaft sleeve and the bottom surface of the guiding groove. When the door body rises a preset distance, the first shaft section is entirely within the spaced space.

[0025] In some embodiments, the first connecting member includes a first upper connecting member, the second connecting member includes a second upper connecting member, the second upper connecting member is provided with a limiting groove, and the limiting groove includes at least one limiting hole position;

[0026] The first upper connecting member is further provided with a positioning member, the positioning member is floatable along the height direction of the refrigerator, and the positioning member is configured to enter the corresponding limiting hole position when the door body is at a specific opening angle.

[0027] In some embodiments, the limiting groove includes a plurality of limiting hole positions, adjacent limiting hole positions are communicated, the plurality of limiting hole positions correspond to a plurality of opening angles one by one, and the plurality of opening angles are all in the second operation stage.

[0028] In some embodiments, the first connecting member includes a first lower connecting member, the hinge shaft includes a second hinge shaft, the second hinge shaft extends upward toward the first lower connecting member, and the first shaft section is closer to the first lower connecting member than the second shaft section; when the door body rises a preset distance, the first shaft section entirely disengages from the inner hole from below.

[0029] In some embodiments, the upper surface of the first lower connecting member is provided with a guiding portion, the guiding portion has an inclined surface section, the second connecting member includes a second lower connecting member, and a convex block is provided on the surface of the second lower connecting member where the guiding groove is opened. The convex block is configured to move along the inclined surface section before the end of entering the second operation stage to force the door body to rise a preset distance.

[0030] In some embodiments, the guiding portion has a flat surface section, the flat surface section is transitionally connected to the top end of the inclined surface section, and the convex block is configured to move along the flat surface section in the second operation stage.

[0031] In some embodiments, the convex block is located in the corner area of the box body near the second end of the guiding groove; the guiding portion is arc-shaped and is located on the outer convex side of the guiding groove and is arranged near the first end of the guiding groove.

[0032] Based on the above technical solutions, the present disclosure has at least the following beneficial effects:

[0033] The refrigerator according to the embodiments of the present disclosure is provided with a single hinge shaft and has two motion stages during the opening process of the door body. In the first operation stage, the hinge shaft slides along a specific trajectory, which is beneficial to realizing interference during the opening process of the door body, and can reduce the dimensional requirements for the thickness and width of the door body. After opening to a specific angle, the motion trajectory is switched to enter the second operation stage, which can further increase the maximum opening angle under the condition that the length of the guide groove 52 is certain. Moreover, the trajectory switching of this single-axis variable trajectory structure is simple, which can reduce the design difficulty, simplify the structure, and is beneficial to production and assembly. In addition, the requirements for the assembly dimensional accuracy of the door body and the hinge structure can be reduced, and the requirements for the dimensional fit accuracy between the hinge shaft and the guide groove can also be reduced, which is beneficial to ensuring the coaxiality of the upper and lower hinges of the door body, so that the door body runs smoothly during the opening process, is not easy to get stuck, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present disclosure, and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure, and do not constitute an improper limitation to the present disclosure. In the drawings:

[0035] Figure 1 is a schematic diagram for determining the interference area during the opening process of the refrigerator door body;

[0036] Figure 2 is the schematic principle diagram of the hinge structure design of the refrigerator door body and the box body of the present disclosure;

[0037] Figure 3 is the exploded view of the hinge structure between the upper part of the refrigerator door body of the present disclosure and the box body;

[0038] Figure 4 is the perspective view of some embodiments of the first upper connecting member;

[0039] Figure 5 is the front view and partial bottom view of the first hinge shaft and the positioning member connected to the first upper connecting member;

[0040] Figure 6 is Figure 5 the enlarged view at A in the partial bottom view in

[0041] Figure 7 is Figure 5 the right view of

[0042] Figure 8 and Figure 9 are respectively the front view and the B-B cross-sectional view of the first limiting bushing;

[0043] Figure 10 is the front view of some embodiments of the second upper connecting member;

[0044] Figure 11 isFigure 10 C-C cross-sectional view in;

[0045] Figure 12 Exploded view of the hinge structure between the lower part of the refrigerator door body and the box body of the present disclosure;

[0046] Figure 13 Stereogram of some embodiments of the first lower connecting member;

[0047] Figure 14 Front view of some embodiments of the second lower connecting member;

[0048] Figure 15 is Figure 14 D-D cross-sectional view in;

[0049] Figure 16 Stereogram of the second limiting bushing;

[0050] Figure 17 Front view of the second limiting bushing;

[0051] Figure 18 Schematic diagram of the positional relationship between the convex block and the guiding part when the door body is in the closed state;

[0052] Figure 19 Schematic diagram of the positional relationship between the convex block and the guiding part when the door body is in the maximum opening angle state;

[0053] Figure 20 Schematic diagram and partial enlarged view of the cooperation between the inner hole and the first shaft section in the first operation stage;

[0054] Figure 21 Schematic diagram and partial enlarged view of the cooperation between the inner hole and the second shaft section in the second operation stage;

[0055] Figure 22 Schematic diagram of the state when the door body is opened by 5°;

[0056] Figure 23 Schematic diagram of the state when the door body is opened by 30°;

[0057] Figure 24 Schematic diagram of the state when the door body is opened to the end of the first operation stage;

[0058] Figure 25 and Figure 26 Schematic diagram and partial enlarged view of the state when the door body is opened by 90° respectively;

[0059] Figure 27 and Figure 28 Schematic diagram and partial enlarged view of the state when the door body is opened to the maximum angle respectively.

[0060] It should be understood that the dimensions of the various parts shown in the drawings are not drawn to actual scale. In addition, the same or similar reference numerals denote the same or similar components.

[0061] Description of Reference Numerals

[0062] 10. Cabinet; X. Extension surface; 20. Door body; 201. First side wall; 202. Second side wall; 203. Third side wall; 204. Fourth side wall; 205. Receiving groove; 30. Door seal; V1. First ridge line; V2. Second ridge line; x. Width direction; y. Depth direction; z. Height direction;

[0063] 1. Positioning member;

[0064] 2. First upper connecting member; 21. First part; 211. First hole; 212. Second hole; 22. Second part; 23. Connecting part;

[0065] 3. First hinge shaft; 31. First shaft section; 32. Second shaft section; 33. Connecting shaft section;

[0066] 4. First limiting bushing; 41. Sliding section; 42. Limiting section; 43. Inner hole;

[0067] 5. Second upper connecting member; 51. First main body part; 52. Guide groove; 53. Third hole; 54. Limiting groove; 54'. Limiting hole position; 55. Protruding part; M. First section; N. Second end; O1. Virtual axis center;

[0068] 6. Second lower connecting member; 61. Second main body part; 63. Fourth hole; 64. Protrusion; 65. Groove;

[0069] 7. First lower connecting member; 71. Substrate; 72. Support plate; 73. Guide part; 74. Fifth hole;

[0070] 8. Second hinge shaft;

[0071] 9. Second limiting bushing; 91. Engaging part. Detailed Description of the Embodiment

[0072] Now, various exemplary embodiments of the present disclosure will be described in detail with reference to the drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the compositions of the materials, the numerical expressions and the numerical values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0073] As used in this disclosure, words such as "first", "second" and the like do not denote any order, quantity or importance, but are only used to distinguish different parts. Words such as "comprising" or "including" mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left" and "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0074] In this disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices and have an intermediate device.

[0075] All terms used in this disclosure (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, for example, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0076] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the specification.

[0077] Based on the above embodiments of this disclosure, in the absence of an express negation or conflict, the technical features of one embodiment can be beneficially combined with one or more other embodiments.

[0078] The inventors have found that the biaxial or multi-axial hinged manner involves multiple tracks and the coincidence calculation of multiple angular trajectories, has relatively high requirements for the dimensions of the door body and hinge assembly, and also has relatively high requirements for the fit between the shaft and the track groove. In the case of relatively large machining and assembly errors, if the coaxiality of the upper and lower hinges of the door body does not meet the predetermined requirements, it is easy for the door body to get stuck during the opening and closing process and the operation is not continuous. Therefore, this disclosure aims to solve this problem by optimizing the implementation manner of the variable-track hinge.

[0079] According to this improvement idea, as Figures 1 to 28 shown, this disclosure provides a refrigerator. In some embodiments, as Figure 2 and Figure 3 show, the refrigerator includes:

[0080] A box body 10 is provided with a loading and unloading opening and a first connecting member; and

[0081] A door body 20 is connected to the box body 10 to open or close the loading and unloading opening, and a second connecting member is provided on the door body 20;

[0082] Wherein, a hinge shaft is provided on one of the first connecting member and the second connecting member, and a guide groove 52 is provided on the other of the first connecting member, and the hinge shaft is located in the guide groove 52;

[0083] During the process of the door body 20 opening from the closed state to the maximum angle, there are a first operation stage and a second operation stage. In the first operation stage, the hinge shaft moves from the first end M of the guide groove 52 to the second end N. In the second operation stage, the hinge shaft remains at the second end N of the guide groove 52.

[0084] Specifically, items can be stored in the box body 10 or taken out from the storage space of the box body 10 through the loading and unloading opening, such as vegetables, fruits or meats, etc. Wherein, the depth direction y refers to the direction extending from the loading and unloading opening into the interior of the storage space in the horizontal plane, and the width direction x is perpendicular to the depth direction y.

[0085] The door body 20 includes a first side wall 201 and a second side wall 202 oppositely arranged along the width direction x of the refrigerator, and a third side wall 203 and a fourth side wall 204 oppositely arranged along the depth direction y of the refrigerator. The first side wall 201 is closer to the connection position of the door body 20 and the box body 10 than the second side wall 202, and the third side wall 203 is farther from the box body 10 than the fourth side wall 204. Wherein, when the door body 20 is in the closed state, the first side wall 201 does not extend beyond the extension surface X of the side wall of the box body 10. For example, the first side wall 201 can be flush with the side wall of the box body 10, or retracted inward relative to the extension surface X of the side wall of the box body 10.

[0086] The first side wall 201 and the third side wall 203 intersect to form a first ridge line V1, and the first side wall 201 and the fourth side wall 204 intersect to form a second ridge line V2. During actual use, such a refrigerator can be used by being embedded in a receiving space, such as being embedded in a cabinet. In order to prevent interference between the inner side wall of the receiving space and the door body 20 during the opening process of the door body 20, the movement track A of the first ridge line V1 during the opening or closing process of the door body 20 is located inside the extension surface X.

[0087] The hinge axis is arranged along the height direction z. During the opening process of the door body 20, in the first operation stage, the hinge axis moves from the starting end to the ending end of the guiding groove 52, and the track length covers the entire extension length of the guiding groove 52. The guiding groove 52 can be arc-shaped. At this time, when the door body 20 opens, it rotates around a fixed axis, or when the guiding groove 52 opens, it rotates around a changing axis. In the second operation stage, the door body 20 continues to open, and the hinge axis remains at the second end N of the guiding groove 52 and only rotates on its own at a fixed position.

[0088] The refrigerator of this embodiment is provided with a single hinge axis and has two motion stages during the opening process of the door body 20. In the first operation stage, the hinge axis slides along a specific track. Compared with the way of completely fixing the hinge axis, it is beneficial to prevent the door body 20 from interfering with the inner side wall of the accommodation space or the box body 10 during the opening process, reduce the dimensional requirements for the thickness and width of the door body 20, and expand the types of product dimensions that can use this structure; after opening to a specific angle, the motion track is switched to enter the second operation stage until the maximum opening angle is reached, which can further increase the maximum opening angle when the length of the guiding groove 52 is certain. Therefore, a larger opening angle can be obtained by combining the first operation stage and the second operation stage.

[0089] Moreover, compared with the double-axis or multi-axis solutions, this single-axis variable track structure only designs a single axis and two running tracks, and the track switching is simple, which can simplify the implementation of the variable track hinge, reduce the design difficulty, and also simplify the structure, which is beneficial to production and assembly. In addition, the single-axis hinge structure can reduce the requirements for the assembly dimensional accuracy of the door body and the hinge structure, and also reduce the requirements for the dimensional fit accuracy between the hinge axis and the guiding groove 52. Therefore, it is beneficial to ensure the coaxiality of the upper and lower hinges of the door body 20, so that the door body 20 runs smoothly during the opening process, is not prone to jamming, has a better feel, and improves the user experience.

[0090] In some embodiments, such as Figure 1 and Figure 2 shown, the refrigerator further includes a door seal 30, and the door seal 30 is connected to the wall surface of the door body 20 close to the box body 10; in the first operation stage, the hinge axis moves along the guiding groove 52 around the virtual axis O1, and the position of the virtual axis O1 is configured to prevent the door body 20 and the door seal 30 from interfering with the box body 10 in the first operation stage, and prevent the door body 20 from exceeding the extension surface X of the side wall of the box body 10 in the width direction x of the refrigerator.

[0091] For example, the guiding groove 52 can be arc-shaped, and the virtual axis O1 is designed at a fixed position, and the virtual axis O1 can be defined by the concentric circle characteristics. Or the guiding groove 52 can also be other curves, and the position of the virtual axis O1 also changes when the hinge axis moves to different positions.

[0092] Such as Figure 1As shown, if a fixed axis O is set, the following situations may occur during the rotation of the door body 20: the first ridge line V1 interferes with the inner side wall of the accommodation space, the second ridge line V2 interferes with the box body 10, and the door seal 30 between the door body 20 and the box body 10 interferes with the box body 10.

[0093] The structural form of the present disclosure optimizes the implementation process of the variable-track hinge, and only the virtual axis O1 defined for the door body 20 to avoid the box body 10 and the inner side wall of the accommodation space in the first operation stage and the position of the fixed axis in the second operation stage need to be considered.

[0094] In this embodiment, a virtual axis O1 is set in the first operation stage, which can make the hinge axis move along a suitable trajectory to continuously adjust the rotation center of the door body 20 during the door opening process, prevent the door body 20 and the door seal 30 from interfering with the box body 10, and prevent the door body 20 from interfering with the side wall of the accommodation space, ensure that the door body 20 can be normally opened in place, prevent damage caused by touching the side wall of the accommodation space, meet the requirements of the built-in refrigerator, and improve the safety during the use of the refrigerator.

[0095] In some embodiments, as Figure 2 shown, the guide groove 52 is arc-shaped. The second end N of the guide groove 52 is closer to the box body 10 along the depth direction y of the refrigerator relative to the first end M of the guide groove 52, and the second end N of the guide groove 52 is closer to the extension surface X of the side wall of the box body 10 along the width direction x relative to the first end M of the guide groove 52.

[0096] Wherein, the concave side of the guide groove 52 faces the first ridge line V1, the virtual axis O1 is arranged on the third side wall 203 and is arranged close to the first ridge line V1, or according to requirements, the virtual axis O1 can also be arranged inside or outside the third side wall 203.

[0097] In this embodiment, the guide groove 52 is set to be arc-shaped, with a regular shape, easy to process, and can ensure dimensional accuracy, improve the matching accuracy between the hinge axis and the guide groove 52, and the arc-shaped trajectory can improve the smoothness of the movement of the hinge axis in the guide groove 52. Moreover, when in the first operation stage, the position of the virtual axis O1 can be kept unchanged, which can reduce the design difficulty and make the door opening process of the door body 20 more stable.

[0098] In addition, the second end N of the guide groove 52 is closer to the box body 10 along the depth direction y relative to the first end M, which can make the door body 20 move away from the box body 10 during the door opening process, preventing the door body 20 and the door seal 30 from interfering with the box body 10; the second end N of the guide groove 52 is closer to the extension surface X of the side wall of the box body 10 along the width direction x relative to the first end M, which can make the door body 20 move away from the extension surface X during the door opening process, preventing the door body 20 from interfering with the side wall of the accommodation space. Thus, the safety of the refrigerator door opening process can be improved.

[0099] In some embodiments, such as Figure 1 and Figure 2 shown, the position of the first end M of the guide groove 52 is configured such that if the door body 20 is opened with it as the fixed axis, the door body 20 interferes with the extension surface X of the side wall of the cabinet body 10 within the first angle range a, the door body 20 interferes with the cabinet body 10 within the second angle range b, and the door seal 30 interferes with the cabinet body 10 within the third angle range c, where the first angle range a, the second angle range b, and the third angle range c are all smaller than the preset angle; the central angle d of the guide groove 52 relative to the virtual axis O1 is not less than the maximum value among the first angle range a, the second angle range b, and the third angle range c.

[0100] Among them, in the specific embodiment as Figure 1 shown, the front end of the door body 20 is flush with the accommodation space, and there is a first gap d1, for example, 3 mm, between the first side wall 201 and the inner side wall of the accommodation space; there is a second gap d2, for example, 10 mm, between the door seal 30 and the cabinet body 10 in the depth direction y; there is a third gap d3, for example, 2 mm, between the fourth side wall 204 and the cabinet body 10 in the depth direction y.

[0101] First, determine the position of the first end M of the guide groove 52 on the door body 20. An iterative method can be used. For example, after initially determining the position of the first end M, with the first end M as the fixed axis O, when the door body 20 rotates within the first angle range a, the first edge line V1 of the door body 20 interferes with the extension surface X of the side wall of the cabinet body 10 within the first angle range a; when the door body 20 rotates to the second angle range b, the second edge line V2 of the door body 20 interferes with the cabinet body 10; when the door body 20 rotates to the third angle range c, the outer edge line of the door seal 30 interferes with the cabinet body 10. For example, the preset angle can be 60°, and ∠a, ∠b, and ∠c are all smaller than 60°.

[0102] In this embodiment, first, the interference angle of the door body 20 is calculated with the first end M of the guide groove 52 as the fixed axis O, and based on this, the central angle d of the guide groove 52 is determined. Since the door body 20 has interference within the first angle range a, the second angle range b, and the third angle range c, the central angle d should exceed the maximum value of these three angle ranges, so that the door body 20 can accurately avoid the above interference angles through the virtual axis O1 and the principle of concentric axes during the entire first operation stage. In this way, there will be no interference problem after entering the second operation stage, and the position of the hinge axis can be maintained at the second end N of the guide groove 52, enabling the door body 20 to rotate around the fixed axis.

[0103] Moreover, the larger the central angle d is, the greater the length of the guiding groove 52 is when the radius of the guiding groove 52 is fixed. Therefore, in this embodiment, the first angle range a, the second angle range b, and the third angle range c do not exceed a preset angle, which can shorten the length of the guiding groove 52 on the basis of avoiding door opening interference, ensure the distance between the end of the guiding groove 52 and the side wall of the door body 20, thereby ensuring strength and improving the service life of the refrigerator.

[0104] In some embodiments, the door body 20 includes a first side wall 201 and a second side wall 202 oppositely arranged along the width direction x of the refrigerator, and a third side wall 203 and a fourth side wall 204 oppositely arranged along the depth direction y of the refrigerator. The first side wall 201 is closer to the connection position of the door body 20 and the cabinet body 10 than the second side wall 202, and the third side wall 203 is farther from the cabinet body 10 than the fourth side wall 204;

[0105] The first distance L between the first end M of the guiding groove 52 and the third side wall 203 is not less than a first distance threshold; and / or the second distance L2 between the second end N of the guiding groove 52 and the first side wall 201 is not less than a second distance threshold. The first distance threshold and the second distance threshold may be the same or different. For example, both are 10 mm.

[0106] Since the first end M of the guiding groove 52 is closer to the third side wall 203 than the second end N, making the first distance L not less than the first distance threshold can ensure the thickness of the door body 20 between the first end M of the guiding groove 52 and the third side wall 203, thereby ensuring strength and improving the service life of the refrigerator.

[0107] Since the second end N of the guiding groove 52 is closer to the first side wall 201 than the first end M, making the second distance L2 not less than the second distance threshold can ensure the thickness of the door body 20 between the second end N of the guiding groove 52 and the first side wall 201, thereby ensuring strength and improving the service life of the refrigerator.

[0108] In some embodiments, such as Figures 3 to 12 , the refrigerator further includes a limit bushing. The limit bushing is inserted into the guiding groove 52 and abuts against the edge of the guiding groove 52. The limit bushing has an inner hole 43. The hinge shaft has a first shaft section 31 and a second shaft section 32 with different cross-sectional shapes. In the first operation stage, the first shaft section 31 cooperates with the inner hole 43 to transmit the acting force. In the second operation stage, the second shaft section 32 can rotate in the inner hole 43 to release the transmission of the acting force.

[0109] Wherein, the hinge shaft may further include a connecting shaft section 33 for connecting with the first connecting member. The first shaft section 31, the second shaft section 32, and the connecting shaft section 33 are coaxially arranged. The connecting shaft section 33 can be assembled with the first connecting member through a upsetting process.

[0110] A relative movement can occur axially between the limit bushing and the hinge shaft to change the mating position between the hinge shaft and the limit bushing. In the second operation stage, on the basis that the second shaft section 32 can rotate in the inner hole 43, it is preferably without play to improve the rotational stability of the door body 20 in the second operation stage.

[0111] The hinge shaft of this embodiment has two shaft sections with different cross-sectional shapes. In the first operation stage, during the rotation of the door body 20, the acting force can be transmitted through the limit bushing to drive the hinge shaft to move along the guide groove 52; in the second operation stage, due to the cooperation between the second shaft section 32 and the inner hole 43, during the further rotation of the door body 20, the acting force cannot be transmitted through the limit bushing to drive the hinge shaft to move along the guide groove 52. Therefore, the hinge shaft remains at the second end N of the guide groove 52 and only rotates on its own axis. In this operation stage, there is no need to avoid the interference area, and rotating with the second end N of the guide groove 52 as the fixed axis can simplify the hinge structure. This kind of track-changing method can simplify the structural design and can reliably achieve track-changing.

[0112] In some embodiments, such as Figure 8 and Figure 9 , the inner hole 43 is a polygonal hole, such as Figure 5 and Figure 6 , the cross-section of the first shaft section 31 is a polygon adapted to the polygonal hole, and the cross-section of the second shaft section 32 is a circle inscribed in the polygonal hole.

[0113] For example, rounded corners can be provided at the corner positions of the polygonal hole to reduce stress concentration and improve the structural strength. The polygon can be a triangle, a quadrilateral, a pentagon, etc. For example, a quadrilateral hole is simple to machine and can increase the diameter of the hinge shaft as much as possible. More preferably, it is a square hole. In this way, when the second shaft section 32 with a circular cross-section rotates in the square hole, its outer wall is tangent to the four inner walls of the square hole, and the second shaft section 32 has no lateral play in the inner hole 43, which can improve the rotational smoothness of the door body 20 in the second operation stage.

[0114] In this embodiment, the first shaft section 31 and the inner hole 43 are matched with a polygonal structure, which is easy to machine and can stably transmit the acting force through the limit bushing. And the second shaft section 32 is designed as a circle and can be inscribed in the polygonal inner hole 43, allowing the hinge shaft to rotate relative to the inner hole 43.

[0115] In some embodiments, as Figure 4 shown, the length of the first shaft section 31 is less than the length of the second shaft section 32.

[0116] This embodiment takes into account that the space at the hinge structure of the refrigerator is very compact. This kind of design can reduce the relative movement amount between the hinge shaft and the inner hole 43 of the limit bushing, and the switching from the first operation stage to the second operation stage can be achieved through a smaller relative movement amount, which can meet the use requirements in a compact space.

[0117] In some embodiments, such as Figures 8 to 11 , Figures 14 to 15 , a protruding portion 55 is provided at the edge of at least a part of the outer periphery of the guiding groove 52. The limiting bushing includes a sliding section 41 and a limiting section 42. The sliding section 41 is located in the guiding groove 52, and the limiting section 42 is connected to the outer end of the sliding section 41 and abuts against the protruding portion 55.

[0118] For example, the entire outer periphery of the guiding groove 52 is provided with the protruding portion 55 to provide a more stable supporting effect on the limiting section 42. Both the sliding section 41 and the limiting section 42 can be cylindrical, and the inner hole 43 thereof can be set as a polygon.

[0119] Such as Figure 2 shown, the second connecting member in the upper hinge includes a second upper connecting member 5. A receiving groove 205 is provided at the top of the door body 20. The receiving groove 205 can be a rectangular groove, and the second upper connecting member 5 is a rectangular block structure and is embedded in the receiving groove 205.

[0120] Such as Figure 10 and Figure 11 shown, the second upper connecting member 5 is provided with a first main body portion 51. The first main body portion 51 includes a housing and a groove-shaped structure. One side of the housing facing the bottom surface of the receiving groove 205 is open. The groove-shaped structure is arranged in the housing. The opening of the groove-shaped structure faces the side of the housing away from the open end and forms the guiding groove 52. The bottom wall of the groove-shaped structure is spaced from the open end of the housing. Third holes 53 can be provided on the housing to install the second upper connecting member 5 in the receiving groove 205 through fasteners. For example, the two third holes 53 can be respectively provided at the corner positions on both sides of the guiding groove 52 on the housing, and the two sides are respectively the protruding side and the recessed side of the guiding groove 52.

[0121] Such as Figure 12 shown, the second connecting member in the lower hinge includes a second lower connecting member 6. A receiving groove 205 is provided at the bottom of the door body 20. The receiving groove 205 can be a rectangular groove, and the second lower connecting member 6 is a rectangular block structure and is embedded in the receiving groove 205.

[0122] Such as Figure 14 and Figure 15As shown, the second lower connecting member 6 is provided with a second main body portion 61. The second main body portion 61 includes a housing and a groove-shaped structure. The side of the housing facing the bottom surface of the receiving groove 205 is open. The groove-shaped structure is provided inside the housing. The opening of the groove-shaped structure faces the side of the housing away from the open end and forms a guiding groove 52. The bottom wall of the groove-shaped structure extends beyond the open end of the housing. A fourth hole 63 can be provided on the housing to install the second lower connecting member 6 in the receiving groove 205 through a fastener. At this time, the guiding groove 52 faces downward. For example, the two fourth holes 63 can be respectively provided at the corner positions on both sides of the guiding groove 52 on the housing, and the two sides are respectively the protruding side and the recessed side of the guiding groove 52. A protruding portion 55 is provided at the edge of the guiding groove 52 of the second lower connecting member 6, and an annular groove 65 is provided on the side wall of the protruding portion.

[0123] As Figure 16 and Figure 17 shown, the limiting bushing includes a second limiting bushing 9. The limiting bushing 9 includes a sliding section 41, a limiting section 42, and an engaging portion 91. The sliding section 41 is located in the guiding groove 52. The limiting section 42 is connected to the outer end of the sliding section 41 and abuts against the protruding portion 55. The engaging member 91 is provided at the inner end of the limiting section 42. For example, the engaging member 91 is a hook. The engaging member 91 is snapped into the groove 65 to prevent the second limiting bushing 9 from disengaging from the guiding groove 52.

[0124] In this embodiment, by providing the protruding portion 55 at the edge of the guiding groove 52, not only can the limiting section 42 be lapped on the protruding portion 55, but the additionally provided protruding portion 55 is easy to ensure the machining plane accuracy, and can accurately position the limiting bushing, so that the operation of the limiting bushing in the guiding groove 52 is smoother and jamming is prevented. Moreover, when the second connecting member is used as the second upper connecting member 5, by designing the height of the protruding portion 55, the spacing between the bottom surface of the limiting bushing and the bottom surface of the guiding groove 52 can be ensured.

[0125] In some embodiments, the door body 20 is configured to switch the inner hole 43 to cooperate with the second shaft section 32 by moving along the height direction z of the refrigerator before entering the second operation stage.

[0126] For example, as Figure 3 shown, the first connecting member is fixed to the box body 10, the hinge shaft is provided on the first connecting member, the second connecting member is fixed to the door body 20, the guiding groove 52 is provided on the second connecting member, and the door body 20 moves along the height direction z. The limiting bushing can be driven to move along the height direction z through the second connecting member, so that the limiting bushing cooperates with the first shaft section 31 or the second shaft section 32.

[0127] In this embodiment, since the height and weight of the door body 20 relative to the box body 10 are both small, and the hinge shaft is arranged along the height direction z, the relative movement between the hinge shaft and the limit bushing can be realized by moving the door body 20 along the height direction z, so as to conveniently realize the switching from the first operation stage to the second operation stage.

[0128] In some embodiments, the door body 20 is configured to switch the inner hole 43 to cooperate with the second shaft section 32 by rising a preset distance before entering the second operation stage.

[0129] Among them, as Figure 3 and Figure 4 shown, the first connecting member includes a first upper connecting member 2, the hinge shaft includes a first hinge shaft 3, the first upper connecting member 2 is formed by a plate-like structure, and includes a first part 21, a second part 22 and a connecting part 23.

[0130] The first part 21 is connected to the top surface of the box body 10, the second part 22 extends above the door body 20, the first hinge shaft 3 is connected to the second part 22, the connecting part 23 is connected between the first part 21 and the second part 22, the connecting part 23 is inclined so that the second part 22 is higher than the first part 21, and there is a gap between the second part 22 and the top surface of the door body 20, and the height dimension of this gap is greater than the preset distance that the door body 20 rises before entering the second operation stage, so that not only can space be left for the upward movement of the door body 20, but also the door body 20 can be freely opened after entering the second operation stage.

[0131] Specifically, a plurality of first holes 211, such as three, are provided on the first part 21 and can be installed on the top surface of the box body 10 through fasteners. The first holes 211 can be oblong extending along the depth direction y to compensate for the distance error between the door body 20 and the box body 10 during installation. A second hole 212 can also be provided on the first part 21, and the second hole 212 can be used as an avoidance hole for threading and the like.

[0132] This embodiment takes into account that there is a certain space above the door body 20. By moving the door body 20 upward by a preset distance, the space above the door body 20 can be fully utilized without affecting other structures on the refrigerator. Moreover, the upward movement mode of the door body 20 is convenient for arranging a jacking structure at the bottom of the door body 20, which is convenient for applying a force to jack up the door body.

[0133] In some embodiments, as Figure 3 、 Figure 5 、 Figure 20 and Figure 21As shown, the first connecting member includes a first upper connecting member 2, the hinge shaft includes a first hinge shaft 3, the first hinge shaft 3 extends downward toward the first upper connecting member 2, and the first shaft segment 31 is farther from the first upper connecting member 2 than the second shaft segment 32; the limiting bushing includes a first limiting bushing 4, and there is a spaced space between the bottom surface of the first limiting bushing 4 and the bottom surface of the guiding groove 52. When the door body 20 rises a preset distance, the entire first shaft segment 31 is within the spaced space.

[0134] As Figure 20 shown, in the first operating stage, the first shaft segment 31 cooperates with the inner hole 43. The entire length of the first shaft segment 31 can cooperate with the inner hole 43, or a partial length of the first shaft segment 31 extends out of the inner hole 43 from the bottom, and only a partial length segment cooperates with the inner hole 43. With a certain length of the first shaft segment 31, this setting method can further shorten the preset distance for the door body 20 to rise. In the latter part of the first operating stage, the door body 20 can start to gradually rise, and the cooperation length between the first shaft segment 31 and the inner hole 43 also changes.

[0135] As Figure 21 shown, entering the second operating stage, at this time the door body 20 rises a preset distance, driving the second upper connecting member 5 and the first limiting bushing 4 to move upward together, so that the first shaft segment 31 enters the spaced space, and at this time the second shaft segment 32 cooperates with the inner hole 43.

[0136] This embodiment is used for the upper hinge of the door body 20. When the door body 20 rises, the second upper connecting member 5 moves toward the direction close to the first hinge shaft 3. By setting a spaced space between the bottom surface of the first limiting bushing 4 and the bottom surface of the guiding groove 52, the entire first shaft segment 31 can be within the spaced space after the door body 20 rises a preset distance. This switching structure can meet the switching requirements of the upper hinge from the first operating stage to the second operating stage.

[0137] In some embodiments, as Figure 5 、 Figure 7 and Figure 10 shown, the first connecting member includes a first upper connecting member 2, the second connecting member includes a second upper connecting member 5, the second upper connecting member 5 is provided with a limiting groove 54, and the limiting groove 54 includes at least one limiting hole position 54';

[0138] The first upper connecting member 2 is further provided with a positioning member 1, the positioning member 1 is floating along the height direction z of the refrigerator, and the positioning member 1 is configured to enter the corresponding limiting hole position 54' when the door body 20 is at a specific opening angle.

[0139] Among them, one or more limiting hole positions 54' can be set. The positioning member 1 can be a floating pin, and the limiting hole position 54' is a round hole. As Figure 4As shown, the positioning member 1 can be provided on the second part 22. The positioning member 1 and the hinge shaft are arranged side by side in the width direction x. The limiting groove 54 can be provided at the corner near the second end N of the guiding groove 52.

[0140] Due to the limitations of the stability adjustment mechanism and the placement position of existing refrigerators, after leveling and stabilizing, it is impossible to ensure that the refrigerator body is completely horizontal. After opening the door, because the refrigerator body is not placed flat, the door body is easily affected by gravity and automatically closes back. It is necessary to hold the door body by hand to maintain a certain opening angle, which greatly affects the user experience.

[0141] In this embodiment, by raising the door body 20 by a preset distance to enter the second operation stage, and setting the limiting hole positions 54' at specific opening angles in the second operation stage, the door body 20 can be limited by the positioning member 1 entering the specific limiting hole positions 54'. By increasing the resistance to correct the center of gravity offset force caused by the uneven placement of the refrigerator body 10, the door body 20 can hover at a specific angle. For example, limits can be set at positions such as 90° and the maximum opening angle, which can solve the problem that the large-angle return of the door body caused by the uneven placement of the refrigerator body when opening the door affects the use, and is convenient for users to take items; moreover, the structure is simple, the production and assembly are highly operable, it does not interfere with the original locking design of the refrigerator, the modification to the original design is small, the adaptability is high, and the overall use cost is low.

[0142] In some embodiments, the limiting groove 54 includes a plurality of limiting hole positions 54'. The adjacent limiting hole positions 54' are connected. The plurality of limiting hole positions 54' correspond to a plurality of opening angles one by one, and all the plurality of opening angles are in the second operation stage.

[0143] As Figure 25 and Figure 26 shown, when the door body 20 is opened to 90 degrees, the positioning member 1 is in the left limiting hole position 54'. As Figure 27 and Figure 28 shown, when the door body 20 is opened to the maximum opening angle, the positioning member 1 is in the right limiting hole position 54'.

[0144] This embodiment can make the positioning member 1 enter the corresponding limiting hole position 54' after the door body 20 is opened to a specific angle, so as to keep the position of the door body 20 by increasing a slight interference resistance. When the opening angle is further increased, the acting force applied to the door body 20 can contact the limiting effect of the positioning member 1, so that the positioning member 1 enters the next limiting hole position 54' for limiting. Thus, the door body 20 can be made to hover at multiple opening angles.

[0145] In some embodiments, as Figure 12As shown, the first connecting member includes a first lower connecting member 7, and the hinge shaft includes a second hinge shaft 8. The second hinge shaft 8 extends upward toward the first lower connecting member 7, and the first shaft segment 31 is closer to the first lower connecting member 7 than the second shaft segment 32. The door body 20 rises a preset distance so that the first shaft segment 31 completely disengages from the inner hole 43 from below.

[0146] Among them, as Figure 13 shown, the first lower connecting member 7 includes a base plate 71 and a support plate 72. The base plate 71 is vertically installed on the intermediate beam of the box body 10. The base plate 71 is provided with a fifth hole 74 for installing on the box body 10 through a fastener. The support plate 72 is horizontally connected to one end of the base plate 71 and has a triangular structure. One side of it is connected to the base plate 71, and the second hinge shaft 8 is vertically installed at the corner position of the support plate 72 away from the base plate 71.

[0147] This embodiment is used for the lower hinge of the door body 20. When the door body 20 rises, the second lower connecting member 6 moves away from the first hinge shaft 3, and also drives the first limit bushing 4 to move upward. After the door body 20 rises a preset distance, the first shaft segment 31 is completely outside the inner hole 43. Such a switching structure can meet the switching requirements of the lower hinge from the first operating stage to the second operating stage.

[0148] In some embodiments, as Figure 13 and Figure 14 shown, the upper surface of the first lower connecting member 7 is provided with a guiding portion 73. The guiding portion 73 has an inclined surface segment. The second connecting member includes a second lower connecting member 6. A convex block 64 is provided on the surface of the second lower connecting member 6 where the guiding groove 52 is opened. The convex block 64 is configured to move along the inclined surface segment before the end of the second operating stage to force the door body 20 to rise a preset distance.

[0149] For example, the convex block 64 can be rectangular or other structures. The convex block 64 can start reaching the inclined surface segment of the guiding portion 73 at a certain moment in the first operating stage.

[0150] This embodiment sets a structure in which the convex block 64 cooperates with the inclined surface segment between the first lower connecting member 7 and the second lower connecting member 6. In the first operating stage, the convex block 64 gradually rises along the inclined surface, forcing the door body 20 to rise. When entering the second operating stage, the convex block 64 is at the highest point of the inclined surface segment. At this time, the door body 20 rises a preset distance, and the second shaft segment 32 cooperates with the inner hole 43. In this way, a jacking force can be applied to the door body 20 through a simple structure to achieve the gradual and stable rise of the door body 20.

[0151] In some embodiments, the guiding portion 73 has a flat surface segment. The flat surface segment is transitionally connected to the top end of the inclined surface segment. The convex block 64 is configured to move along the flat surface segment in the second operating stage.

[0152] As Figure 18As shown, the door body 20 is in the closed state, and the distance between the bump 64 and the guiding portion 73 is relatively large. As Figure 19 shown, the door body 20 is at the maximum opening angle, the bump 64 reaches the end of the guiding portion 73 and is located on the planar section.

[0153] In this embodiment, by providing a planar section at the top of the inclined section, after the end of the first operation stage, the bump 64 still remains in the position where the door body 20 is lifted, so that the positioning member 1 can enter the limiting hole position 54' in the second operation stage, realizing the hovering of the door body 20 at a specific opening angle.

[0154] In some embodiments, as Figure 18 shown, the bump 64 is located at the second end N of the guiding groove 52 near the corner area of the box body 10; the guiding portion 73 is arc-shaped, and the guiding portion 73 is located on the convex side of the guiding groove 52 and is arranged near the first end M of the guiding groove 52. For example, the starting end of the guiding portion 73 is located at the middle position of the guiding groove 52, and the end of the guiding portion 73 extends beyond the first end M of the guiding groove 52.

[0155] In this embodiment, the bump 64 and the guiding portion 73 are arranged at the diagonal positions of the lower hinge structure. During the opening process of the door body 20, the bump 64 can have a relatively large movement stroke before reaching the guiding portion 73 and along the guiding portion 73. On the basis of meeting the requirement of a large opening angle of the refrigerator, the functions of changing the track by the rising of the door body 20 and hovering of the door body 20 at a specific position are realized at the same time.

[0156] In some specific embodiments, as Figure 1 and Figure 2 shown, according to theoretical calculations, the following conditions need to be met to easily design the trajectory of the guiding groove 52. Specifically: 1. ∠a, ∠b, ∠c < 60°; 2. The first distance L ≥ 10 mm; 3. When condition 2 is satisfied, ∠a, ∠b, ∠c are as small as possible. Define the virtual axis center O1, and the following conditions need to be met at the same time: 1. ∠d ≥ the maximum value of ∠a, ∠b, ∠c; 2. The second distance L2 ≥ 10 mm; 3. According to the virtual axis center O1, no interference occurs during the rotation of the door body 20 and the door seal 20.

[0157] As Figure 22 shown, it is a schematic diagram of the opening angle of 5°. The hinge axis moves a small stroke from the first end M of the guiding groove 52; as Figure 23 shown, it is a schematic diagram of the opening angle of 30°. The hinge axis is located at the middle position of the guiding groove 52; as Figure 24 shown, it is a schematic diagram at the end of the first operation stage. The hinge axis is located at the second end N of the guiding groove 52. During the entire first operation stage, the movement stroke of the hinge axis in the guiding groove 52 is approximately proportional to the opening angle.

[0158] AsFigure 25 As shown, it is a schematic diagram with the door opening angle of 90°, and the hinge shaft is still located at the second end N of the guide groove 52. As Figure 26 shown, at this time, the positioning member 1 is within the left limiting hole position 54'; as Figure 27 shown, it is a schematic diagram of the maximum door opening angle, and the hinge shaft is still located at the second end N of the guide groove 52. As Figure 28 shown, at this time, the positioning member 1 is within the right limiting hole position 54'.

[0159] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A refrigerator, characterized in that: include: The box body (10) is provided with a take-in and put-out opening and a first connecting member; as well as A door body (20) connected to the box body (10) to open or close the access opening, and a second connecting member is provided on the door body (20); Wherein, one of the first connecting member and the second connecting member is provided with a hinge shaft, and the other of the first connecting member and the second connecting member is provided with a guide groove (52), and the hinge shaft is located in the guide groove (52); The door body (20) has a first operating stage and a second operating stage in the process of opening from a closed state to a maximum angle. In the first operating stage, the hinge shaft moves from the first end (M) of the guide groove (52) to the second end (N). In the second operating stage, the hinge shaft remains at the second end (N) of the guide groove (52).

2. The refrigerator according to claim 1, characterized in that: It also includes a door seal (30), wherein the door seal (30) is connected to a wall surface of the door body (20) close to the box body (10); In the first operating stage, the hinge shaft moves around a virtual axis (O1) along the guide groove (52), and the position of the virtual axis (O1) is constructed so that the door body (20) and the door seal (30) do not interfere with the box body (10) in the first operating stage, and the door body (20) does not exceed the extension surface (X) of the side wall of the box body (10) in the width direction (x) of the refrigerator.

3. The refrigerator according to claim 2, characterized in that: The guide groove (52) is in an arc shape; the second end (N) of the guide groove (52) is closer to the box body (10) along the depth direction (y) of the refrigerator relative to the first end (M) of the guide groove (52); and the second end (N) of the guide groove (52) is closer to the extension surface (X) of the side wall of the box body (10) along the width direction (x) relative to the first end (M) of the guide groove (52).

4. The refrigerator according to claim 2, characterized in that: The position of the first end (M) of the guide groove (52) is constructed so that if the door body (20) is opened with the first end (M) as a fixed axis, the door body (20) and the extended surface (X) of the side wall of the box body (10) interfere with each other within a first angle range a, the door body (20) and the box body (10) interfere with each other within a second angle range b, and the door seal (30) and the box body (10) interfere with each other within a third angle range c, wherein the first angle range a, the second angle range b and the third angle range c are all smaller than a preset angle; The central angle d of the guide groove (52) relative to the virtual axis (O1) is not less than the maximum value among the first angle range a, the second angle range b and the third angle range c.

5. The refrigerator according to claim 1, characterized in that: The door body (20) comprises a first side wall (201) and a second side wall (202) which are arranged opposite to each other along a width direction (x) of the refrigerator, and a third side wall (203) and a fourth side wall (204) which are arranged opposite to each other along a depth direction (y) of the refrigerator, wherein the first side wall (201) is closer to a connection position between the door body (20) and the box body (10) relative to the second side wall (202), and the third side wall (203) is farther away from the box body (10) relative to the fourth side wall (204); A first distance L between the first end (M) of the guide groove (52) and the third side wall (203) is not less than a first distance threshold; and / or a second distance L2 between the second end (N) of the guide groove (52) and the first side wall (201) is not less than a second distance threshold.

6. The refrigerator according to any one of claims 1 to 5, characterized in that: It also includes a limiting sleeve, which is inserted into the guide groove (52) and abuts against the edge of the guide groove (52), and the limiting sleeve has an inner hole (43). The hinge shaft has a first shaft segment (31) and a second shaft segment (32) with different cross-sectional shapes. In the first operating stage, the first shaft segment (31) cooperates with the inner hole (43) to transmit the force, and in the second operating stage, the second shaft segment (32) can rotate in the inner hole (43) to release the transmitted force.

7. The refrigerator according to claim 6, characterized in that The inner hole (43) is a polygonal hole, the cross section of the first shaft section (31) is a polygon that matches the polygonal hole, and the cross section of the second shaft section (32) is a circle that is inscribed in the polygonal hole.

8. The refrigerator according to claim 6, characterized in that: The length of the first shaft section (31) is smaller than the length of the second shaft section (32).

9. The refrigerator according to claim 6, characterized in that: A protrusion (55) is provided at the edge of at least part of the outer periphery of the guide groove (52); the limiting shaft sleeve comprises a sliding section (41) and a limiting section (42); the sliding section (41) is located in the guide groove (52); the limiting section (42) is connected to the outer end of the sliding section (41) and abuts against the protrusion (55).

10. The refrigerator according to claim 6, characterized in that The door body (20) is configured to switch the inner hole (43) to cooperate with the second shaft section (32) by moving along the height direction (z) of the refrigerator before entering the second operation stage.

11. The refrigerator according to claim 6, characterized in that: The door body (20) is configured to, before entering the second operation phase, rise a preset distance so that the inner hole (43) switches to cooperate with the second shaft section (32).

12. The refrigerator according to claim 11, characterized in that The first connecting member comprises a first upper connecting member (2), the hinge axis comprises a first hinge axis (3), the first hinge axis (3) extends toward the bottom of the first upper connecting member (2), and the first axis section (31) is away from the first upper connecting member (2) relative to the second axis section (32); The limiting shaft sleeve comprises a first limiting shaft sleeve (4), a spacing space being provided between the bottom surface of the first limiting shaft sleeve (4) and the bottom surface of the guide groove (52), and when the door body (20) rises the preset distance, the first shaft section (31) is entirely within the spacing space.

13. The refrigerator according to claim 11, characterized in that The first connecting member comprises a first upper connecting member (2), the second connecting member comprises a second upper connecting member (5), the second upper connecting member (5) is provided with a limiting groove (54), and the limiting groove (54) comprises at least one limiting hole (54'); The first upper connecting member (2) is also provided with a positioning member (1), the positioning member (1) being floatable along the height direction (z) of the refrigerator, and the positioning member (1) being configured to enter the corresponding limiting hole position (54') when the door body (20) is at a specific door opening angle.

14. The refrigerator according to claim 13, characterized in that: The limiting groove (54) comprises a plurality of limiting holes (54'), adjacent limiting holes (54') are connected, the plurality of limiting holes (54') correspond one-to-one to a plurality of door opening angles, and the plurality of door opening angles are all located in the second operation stage.

15. The refrigerator according to claim 11, characterized in that The first connecting member comprises a first lower connecting member (7), the hinge shaft comprises a second hinge shaft (8), the second hinge shaft (8) extends upwardly from the first lower connecting member (7), and the first shaft section (31) is closer to the first lower connecting member (7) relative to the second shaft section (32); when the door body (20) rises a preset distance, the first shaft section (31) completely disengages from the inner hole (43) from below.

16. The refrigerator according to claim 15, characterized in that The upper surface of the first lower connecting member (7) is provided with a guide portion (73), the guide portion (73) having an inclined surface section, the second connecting member comprises a second lower connecting member (6), the surface of the second lower connecting member (6) on which the guide groove (52) is opened is provided with a protrusion (64), the protrusion (64) is configured to move along the inclined surface section at the end of entering the second operating stage, so as to force the door body (20) to rise the preset distance.

17. The refrigerator according to claim 16, wherein: The guide portion (73) has a plane section, the plane section is transitionally connected to the top end of the inclined surface section, and the projection (64) is configured to move along the plane section in the second operating stage.

18. The refrigerator according to claim 16, characterized in that The protrusion (64) is located at the second end (N) of the guide groove (52) close to the corner area of ​​the box body (10); the guide portion (73) is arc-shaped, and the guide portion (73) is located on the outer convex side of the guide groove (52) and is arranged close to the first end (M) of the guide groove (52).

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