Refrigerator

Abstract

This invention proposes a refrigerator, belonging to the field of household appliance technology. The refrigerator includes a cabinet with a hinge plate, on which are provided a first shaft and a second shaft, both tapered; a door with a first groove cooperating with the first shaft and a second groove cooperating with the second shaft, the first and second grooves being flared; the starting end of the first groove is farther from the front wall and closer to the side wall than the starting end of the second groove; the first groove includes a positioning straight groove extending from the starting end towards the side wall, and a rear positioning curved groove extending from the end of the positioning straight groove towards both the front and side walls; when the door is opened from the closed state to a third angle (≥90°), the first shaft moves sequentially along the positioning straight groove and the rear positioning curved groove, while the second shaft moves relative to the second groove towards the side wall. The hinge structure of this refrigerator ensures that the door does not extend beyond or excessively beyond the side of the cabinet when opened.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more particularly to a refrigerator. Background Technology

[0002] In related technologies, the hinge structure of refrigerator doors is mostly of the single-axis type. The door rotates around the hinge axis by cooperating with the door's bushing. When the door is opened, the corner of the door will extend beyond the side of the refrigerator body.

[0003] For built-in refrigerators, which are typically placed inside cabinets, the corners of the door should not extend too far beyond the cabinet dimensions when the door is opened to 90 degrees; otherwise, the refrigerator's use will be limited. Summary of the Invention

[0004] This invention at least partially solves one of the technical problems in the related art.

[0005] Therefore, this application aims to provide a refrigerator whose hinge structure ensures that the door does not extend beyond or excessively extend beyond the side of the refrigerator body when opened.

[0006] The refrigerator according to this application includes: a cabinet having a hinge plate thereon, the hinge plate having a first shaft and a second shaft, both tapered; a door having a first groove cooperating with the first shaft and a second groove cooperating with the second shaft, the first groove and the second groove being tapered flared openings, the side of the door near the hinge plate being a side wall, the door having a front wall, and a side edge located at the intersection of the front wall and the side wall; wherein, when the door is in a closed state, the first shaft is located at the starting end of the first groove, the second shaft is located at the starting end of the second groove, and the starting end of the first groove is farther from the front wall and closer to the side wall than the starting end of the second groove; the first groove includes a positioning straight groove extending from the starting end toward the side wall, and a rear positioning curved groove extending from the end of the positioning straight groove toward the front wall and the side wall; when the door is opened from the closed state to a third angle, the third angle being ≥90°, the first shaft moves sequentially along the positioning straight groove and the rear positioning curved groove toward the side wall, and the second shaft moves relative to the second groove toward the side wall.

[0007] In some embodiments of the refrigerator of this application, the second groove includes a front guide curve groove extending from the starting end toward the direction away from the front wall and close to the side wall, and a rear guide curve groove extending from the end of the front guide curve groove toward the direction close to the front wall and close to the side wall; when the door continues to open from the third angle, the first axis continues to move along the rear positioning curve groove toward the direction close to the side wall, and the second axis continues to move along the rear guide curve groove toward the direction close to the side wall.

[0008] In some embodiments of the refrigerator of this application, the side edge is located on the concave side of the front guide curve groove and the rear guide curve groove.

[0009] In some embodiments of the refrigerator of this application, the angle between the tangent of the first axis at any point on the rear positioning curve groove and the tangent of the second axis at the corresponding point on the rear guide curve groove is >20°.

[0010] In some embodiments of the refrigerator of this application, the second groove includes a front guide curve groove extending from the starting end toward the direction away from the front wall and close to the side wall, and a rear guide curve groove extending from the end of the front guide curve groove toward the direction away from the front wall and close to the side wall; when the door continues to open from the third angle, the first axis moves away from the side wall along the rear positioning curve groove, and the second axis continues to move toward the side wall along the rear guide curve groove.

[0011] In some embodiments of the refrigerator of this application, the side edge is located on the concave side of the front guide curve groove and on the convex side of the rear guide curve groove.

[0012] In some embodiments of the refrigerator of this application, the center line of the positioning straight groove is tangent to the center line of the rear positioning curved groove.

[0013] In some embodiments of the refrigerator of this application, the angle between the center line of the positioning straight groove and the tangent at any point on the center line of the front guide curved groove is >45°.

[0014] In some embodiments of the refrigerator of this application, the angle between the side of the first axis and / or the second axis and the vertical center line is 0~5°.

[0015] In some embodiments of the refrigerator in this application, the first shaft is thicker than the second shaft. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a refrigerator according to an embodiment of this application;

[0018] Figure 2 This is a top view of a refrigerator according to the first embodiment of this application;

[0019] Figure 3 yes Figure 2 Enlarged view from direction A;

[0020] Figure 4 This is a schematic diagram showing the relative positions of the first and second axes of a refrigerator according to an embodiment of this application;

[0021] Figures 5-6 This is a schematic diagram of the first and second compartments of a refrigerator according to the first embodiment of this application;

[0022] Figure 7 This is a partial view of the refrigerator door in the first embodiment of this application, in the open first angle state;

[0023] Figure 8 This is a partial view of the refrigerator door in the second open angle state according to the first embodiment of this application;

[0024] Figure 9 This is a partial view of the refrigerator door in a 90° open state according to the first embodiment of this application;

[0025] Figure 10 This is a partial view of the refrigerator door in the third open angle state according to the first embodiment of this application;

[0026] Figure 11 This is a partial view of the refrigerator door according to the first embodiment of this application in the state of being opened to its maximum angle;

[0027] Figure 12 This is a partial view of the refrigerator door in the closed state according to the first embodiment of this application;

[0028] Figure 13 This is a partial view of the refrigerator door according to the first embodiment of this application at an opening first angle;

[0029] Figure 14 This is a partial view of the refrigerator door of the first embodiment of this application at the third opening angle;

[0030] Figure 15 This is a partial view of the refrigerator door according to the first embodiment of this application at its maximum opening angle;

[0031] Figure 16 This is a schematic diagram of the first and second compartments of a refrigerator according to the second embodiment of this application;

[0032] Figure 17 This is a partial view of the refrigerator door in the first open angle state according to the second embodiment of this application;

[0033] Figure 18 This is a partial view of the refrigerator door in the second open angle state according to the second embodiment of this application;

[0034] Figure 19 This is a partial view of the refrigerator door in a 90° open state according to the second embodiment of this application;

[0035] Figure 20 This is a partial view of the refrigerator door in the third open angle state according to the second embodiment of this application;

[0036] Figure 21 This is a partial view of the refrigerator door in the maximum opening angle state according to the second embodiment of this application;

[0037] Figure 22 This is a schematic diagram of the first and second compartments of a refrigerator according to the third embodiment of this application;

[0038] Figure 23 This is a partial view of the refrigerator door in the fourth open angle state according to the third embodiment of this application;

[0039] Figure 24 This is a partial view of the refrigerator door in the fifth open angle state according to the third embodiment of this application;

[0040] Figure 25 This is a partial view of the refrigerator door in a 90° open state according to the third embodiment of this application;

[0041] Figure 26 This is a partial view of the refrigerator door in the third open angle state according to the third embodiment of this application;

[0042] Figure 27 This is a partial view of the refrigerator door according to the third embodiment of this application, with the door at its maximum opening angle.

[0043] Figure 28 This is a comparative schematic diagram of the first slot according to this application and the first slot of related technologies;

[0044] Figure 29 This is a schematic diagram of the first and second slots of the related technology;

[0045] Figure 30 This is an exploded view of the hinge assembly at the top of the refrigerator according to an embodiment of this application;

[0046] Figure 31 This is a partial view of the hinge assembly at the lower end of a refrigerator according to an embodiment of this application;

[0047] Figure 32 This is an exploded view of the hinge assembly at the lower end of a refrigerator according to an embodiment of this application. Detailed Implementation

[0048] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0049] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0051] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] In the following description, embodiments of this application will be described in detail with reference to the accompanying drawings. In the drawings, the side of the refrigerator facing the user when in use is defined as the front side, and the opposite side is defined as the rear side.

[0053] Reference Figure 1 The refrigerator 1 may include: a cabinet 10, a door 20, and a hinge assembly 30.

[0054] The housing 10 is generally rectangular in shape, defining an open-front storage compartment for food storage. This storage compartment can be divided into a refrigerator compartment and a freezer compartment. The refrigerator compartment stores food in a refrigeration mode by maintaining the air temperature at approximately 0 to 5°C, while the freezer compartment stores food in a freezing mode by maintaining the air temperature at 0 to -30°C. In other embodiments, the housing 10 may also include a vacuum chamber, a constant-temperature chamber, etc.

[0055] The door 20 is rotatably connected to the front end of the cabinet 10 to open and close the storage compartment. When the door 20 is open, the open front of the storage compartment allows food to be received and taken out.

[0056] The door 20 can be supported on the housing 10 by the hinge assembly 30, and the door 20 can rotate by the hinge assembly 30.

[0057] Typically, the hinge assembly 30 is located at the left and / or right end of the housing 10.

[0058] Reference Figure 2 , Figure 3 For ease of description, the side of the door 20 closest to the hinge assembly 30 is referred to as sidewall 21. For example, in the current example, if the hinge assembly 30 is located on the right side of the housing 10, then the right side of the door 20 is sidewall 21, and the left end of the door 20 rotates around its right end as the center of rotation. The front wall 22 and sidewall 21 of the door 20 intersect to form side ridge 23. When the hinge assembly 30 is located on the left side of the housing 10, then the left side of the door 20 is sidewall 21, and the right end of the door 20 rotates around its left end as the center of rotation.

[0059] The plane containing the side of the housing 10 closest to the hinge assembly 30 is defined as reference plane O. Using reference plane O as the dividing line, the side containing the housing 10 is the inner side, and the opposite side is the outer side. If the hinge assembly 30 is located on the right side of the door 20, the inner side is the left side of reference plane O; if the hinge assembly 30 is located on the left side of the door 20, the inner side is the right side of reference plane O.

[0060] Continue to refer to Figure 2 , Figure 3 When the refrigerator is placed in the cabinet 100, to prevent damage from uneven floors or cabinet deformation, the cabinet is typically positioned approximately 5mm away from the side (reference plane O) of the refrigerator. To ensure the refrigerator door 20 opens properly, its side edge 23 must not extend too far beyond the reference plane O during rotation; otherwise, the side edge 23 will collide with the cabinet 100, preventing the door from opening. Therefore, the door 20 needs to move inwards during rotation to ensure that its side edge 23 does not extend too far beyond the reference plane O during opening and closing, thus meeting the requirements for embedding the refrigerator in the cabinet 100.

[0061] According to the refrigerator embodiment of this application, the hinge assembly 30 adopts the form of a dual-axis hinge, which satisfies the requirement that the door 20 can move inward when it rotates by combining the trajectories of the two axes.

[0062] Specifically, the hinge assembly 30 includes a first shaft 41 and a first groove 50 that cooperate with each other, and a second shaft 42 and a second groove 60 that cooperate with each other. During the process of the door 20 rotating to open or close, the first shaft 41 moves relative to the first groove 50, and the second shaft 42 moves relative to the second groove 60.

[0063] The following description uses the example of the first shaft 41 and the second shaft 42 being fixed relative to the housing 10, and the first groove 50 and the second groove 60 being located on the door 20:

[0064] During the rotation of the door 20, the first groove 50 moves relative to the first shaft 41 and the second groove 60 moves relative to the second shaft 41.

[0065] Since there is a relative motion relationship between the first groove 50 and the first shaft 41, and between the second groove 60 and the second shaft 42, if the first groove 50 and the second groove 60 are taken as stationary reference frames, it is equivalent to the first shaft 41 moving within the first groove 50 and the second shaft 42 moving within the second groove 60. For ease of description, this application uses the first groove 50 and the second groove 60 as reference frames, and describes the movement of the first shaft 41 and the second shaft 42 relative to the reference frames.

[0066] In a first embodiment of the dual-axis hinge of this application:

[0067] Reference Figure 4 The figure illustrates an example of the relative positions of the first axis 41 and the second axis 42: when the door 20 is closed, the first axis 41 is farther from the front wall 22 and closer to the side wall 21 than the second axis 42. The thickness of the door 20 can be between 44mm and 53mm. Those skilled in the art will understand that the positional dimensions of the first axis 41 and the second axis 42 illustrated can be adjusted within a certain range.

[0068] Reference Figure 5 , Figure 6 With reference to the direction from the inside to the outside, the first groove 50 generally includes a positioning straight groove extending towards the side wall 21 (between the initial positioning position 501 and the third positioning position 503, which will be described below), and a rear positioning curved groove (between the third positioning position 503 and the fifth positioning position 505) connected to the end of the positioning straight groove and extending towards the front wall 22 and towards the side wall 21. The second groove 60 is generally a guide curved groove extending away from the front wall 22 and towards the side wall 21.

[0069] In other embodiments, the rear portion of the first groove 50 may also be in the form of a straight groove, and part or all of the second groove 60 may also be in the form of a straight groove.

[0070] According to some embodiments of this application, the centerline of the positioning straight groove may be tangent to the centerline of the rear positioning curved groove.

[0071] The guide curve groove of the second groove 60 is divided into a front guide curve groove (between the initial guide position 601 and the fifth guide position 605) located at the front part and a rear guide curve groove (between the fifth guide position 605 and the sixth guide position 606) located at the end, according to the change of the bending direction. The front guide curve groove protrudes inward and backward, and the rear guide curve groove protrudes forward. That is to say, the side edge 23 is located on the concave side of the front guide curve groove and on the convex side of the rear guide curve groove.

[0072] The following section provides a detailed explanation of the double-axis hinge, focusing on the opening process of door 20:

[0073] Phase 1

[0074] The first slot 50 includes an initial positioning position 501 and a second positioning position 502. The second positioning position 502 is closer to the side wall 21 than the initial positioning position 501, and the line connecting the initial positioning position 501 and the second positioning position 502 is parallel to the front surface of the box 10 when the door 20 is in the closed state.

[0075] Door 20 opens from the closed state to the first angle (e.g.) Figure 7 When the first axis 41 moves from the initial positioning position 501 to the second positioning position 502, the first axis 41 moves towards the side wall 21, which is equivalent to the first groove 50 moving away from the reference plane O relative to the first axis 41, so that the door 20 moves inward by a first distance while rotating; the door 20 moves inward, so that the side edge 23 moves inward relative to the reference plane O, avoiding the collision between the side edge 23 and the cabinet 100.

[0076] When the door is in the first angle state, the distance β1 of the side edge 23 extending beyond the reference plane O is less than α. In other embodiments, the side edge 23 can also be moved to the inside of the reference plane O. This would require the door body 20 to rotate a small angle and move a large distance inward, which would affect the feel and smoothness of opening the door.

[0077] Continue to refer to Figure 5 , Figure 7 The second groove 60 includes an initial guide position 601 and a second guide position 602. The second guide position 602 is farther away from the front wall 22 and closer to the side wall 21 than the initial guide position 601.

[0078] When the door 20 is opened from the closed state to the first angle, the second shaft 42 moves from the initial guide position 601 to the second guide position 602. Under this guidance, the first shaft 41 moves from the initial positioning position 501 to the second positioning position 502.

[0079] That is, the first axis 41 moves from the initial positioning position 501 toward the direction closer to the side wall 21 to the second positioning position 502, while the second axis 42 moves from the initial guide position 601 toward the direction away from the front wall 22 and closer to the side wall 21 to the second guide position 602.

[0080] The trajectory line of the first axis 41 between the initial positioning position 501 and the second positioning position 502 is the initial positioning straight line segment 51. When the door 20 is in the closed state, the initial positioning straight line segment 51 is parallel to the front surface of the housing 10, that is, the trajectory of the first groove 50 has a straight groove segment parallel to the front wall of the door 20. It should be noted that the trajectory line in this paper is formed with the center of the first axis 41 and the second axis 42 as the reference point.

[0081] The trajectory of the second axis 42 between the initial guide position 601 and the second guide position 602 is the initial guide curve segment 61. The initial guide curve segment 61 is a spline curve extending away from the front wall 22 and closer to the side wall 21.

[0082] Those skilled in the art will understand that the relative positions of the first axis 41 and the second axis 42 can be set in other forms, and the extension direction of the second groove 60 and the relative positional relationship between the initial guide position 601 and the second guide position 602 will change accordingly.

[0083] According to some embodiments of this application, in the first stage, the angle between the tangent at any point on the initial positioning straight line segment 51 and the initial positioning curve segment 61 is greater than 45°, ensuring that the door 20 does not sway during movement. If the movement trend of the first axis 41 and the movement trend of the second axis 42 are nearly parallel, the door 20 is prone to swaying. However, in this application, the angle between the initial positioning straight line segment 51 and the initial guide curve segment 61 is relatively large, which can effectively avoid the occurrence of swaying.

[0084] During this stage, the door 20 opens to an initial angle of approximately 7°.

[0085] Phase Two

[0086] Reference Figure 5 and Figure 8 The first groove 50 also has a third positioning position 503, which is closer to the side wall 21 than the second positioning position 502, and the distance from the line connecting the third positioning position 503 and the second positioning position 502 to the front wall 22 remains unchanged; the second groove 60 also has a third guide position 603, which is closer to the side wall 21 and farther from the front wall 22 than the second guide position 602.

[0087] When the door 20 continues to open from the first angle to the second angle, the first shaft 41 moves from the second positioning position 502 toward the direction closer to the side wall 21 to the third positioning position 503. At the same time, the second shaft 42 moves from the second guide position 602 toward the direction closer to the side wall 21 and away from the front wall 22 to the third guide position 603. This allows the door 20 to move inward a second distance while rotating. The door 20 continues to move inward, so that the side edge 23 moves inward relative to the reference plane O, avoiding collision between the side edge 23 and the cabinet 100.

[0088] When the door 20 is in the second angle open state, the distance β2 of the side edge 23 extending beyond the reference plane O is less than α. In other embodiments, the side edge 23 can also be designed to move to the inside of the reference plane O, which would require the door 20 to move a larger distance inward, affecting the feel and smoothness of opening the door.

[0089] The trajectory line of the first axis 41 between the second positioning position 502 and the third positioning position 503 is the second positioning straight line segment 52; the trajectory line of the second axis 42 between the second guide position 602 and the third guide position 603 is the second guide curve segment 62.

[0090] In other words, when the door 20 continues to open from the first angle to the second angle, the first shaft 41 moves along the second positioning straight line segment 52 toward the side wall 21, while the second shaft 42 moves along the second guide curve segment 62 toward the side wall 21 and away from the front wall 22, so that the door 20 moves inward a second distance while rotating.

[0091] In some embodiments of this application, the angle between the second positioning straight line segment 52 and the tangent of the second axis 42 at any point on the second guide curve segment 62 is greater than 45°, ensuring that the door body 20 does not shake.

[0092] In the second stage, the second angle is approximately 30° to 40°.

[0093] In the first stage, the door 20 is opened to approximately 7°, the movement trajectory of the second axis 42 relative to the second groove 60 is the initial guide curve segment 61, and the movement trajectory of the first axis 41 relative to the first groove 50 is the initial positioning straight line segment 51; in the second stage, the door 20 is opened to approximately 40°, the movement trajectory of the second axis 42 relative to the second groove 60 is the second guide curve segment 62, and the movement trajectory of the first axis 41 relative to the first groove 50 is the second positioning straight line segment 52.

[0094] Among them, the connection point of the initial guide curve segment 61 and the second guide curve segment 62 has a trend change point, which makes the inward movement distance d within the unit opening angle of the door body 20 different in the first stage and the second stage, and the inward movement distance d per unit angle in the first stage is slightly smaller than that in the second stage.

[0095] Specifically, in the first stage, the door 20 moves inward by a unit angle of μ1, and in the second stage, the door 20 moves inward by a unit angle of μ2, where μ1 < μ2. In other words, the inward movement of the door 20 in the first stage when it is first opened is relatively small. This can avoid the door seal on the rear surface of the door 20 from rubbing against the front surface of the box 10 due to the large inward movement of the door 20 by a unit angle when it is first opened.

[0096] The slope of the initial guide curve segment 61 is greater than the slope of the second guide curve segment 62. (Refer to...) Figure 8 The extension line of the initial guide curve segment 61 is denoted as B, and the second guide curve segment 62 is located on the side of the extension line B near the side edge 23.

[0097] Phase Three

[0098] Reference Figure 5 and Figure 9 The first groove 50 also has a fourth positioning position 504, which is closer to the side wall 21 and the front wall 22 than the third positioning position 503; the second groove 60 also has a fourth guide position 604, which is closer to the side wall 21 and farther from the front wall 22 than the third guide position 603.

[0099] When the door 20 continues to open from the second angle to 90°, the first axis 41 moves from the third positioning position 503 toward the fourth positioning position 504 in the direction close to the side wall 21 and the front wall 22. At the same time, the second axis 42 moves from the third guide position 603 toward the fourth guide position 604 in the direction close to the side wall 21 and away from the front wall 22, so that the door 20 moves inward a third distance while rotating. The door 20 continues to move inward, so that the side edge 23 continues to move inward relative to the reference plane O, avoiding the collision between the side edge 23 and the cabinet 100.

[0100] The motion trajectory of the first axis 41 between the third positioning position 503 and the fourth positioning position 504 is the third positioning curve segment 53; the motion trajectory of the second axis 42 between the third guide position 603 and the fourth guide position 604 is the third guide curve segment 63. In other embodiments, the motion trajectory between the third positioning position 503 and the fourth positioning position 504, or the motion trajectory between the third guide position 603 and the fourth guide position 604, may also have straight line segments.

[0101] In other words, when the door 20 continues to open from the second angle to 90°, the first axis 41 moves along the third positioning curve segment 53 toward the side wall 21 and the front wall 22, while the second axis 42 moves along the third guide curve segment 63 toward the side wall 21 and away from the front wall 22, so that the door 20 moves inward a third distance while rotating.

[0102] In some embodiments of this application, the angle between the tangent of the first axis 41 at any point on the third positioning curve segment 53 and the tangent of the second axis 42 at the corresponding point on the third guide curve segment 63 is greater than 45°, ensuring that the door 20 does not shake.

[0103] The door 20 moves inwards continuously as it moves from the closed state to the 90° open state. This ensures that the door 20 is located inside the reference plane O at the 90° state, allowing the door 20 to continue opening to >90° before hitting the cabinet. This increases the door opening angle when the refrigerator is placed in the cabinet, making it easier for users to take out and put in food.

[0104] Specifically, when the door 20 is in the 90° open state, there is a gap β3 between the front wall 22 of the door 20 and the reference plane O, which is about 3mm.

[0105] Phase 4

[0106] At this stage, the door 20 continues to open from 90° to the third angle.

[0107] Specific reference Figure 5 and Figure 10 The first groove 50 also has a fifth positioning position 505, which is closer to the side wall 21 and the front wall 22 than the fourth positioning position 504; the second groove 60 also has a fifth guide position 605, which is closer to the side wall 21 and farther from the front wall 22 than the fourth guide position 604.

[0108] The first axis 41 moves from the fourth positioning position 504 toward the fifth positioning position 505 in a direction close to the side wall 21 and the front wall 22, while the second axis 42 moves from the fourth guide position 604 toward the fifth guide position 605 in a direction close to the side wall 21 and away from the front wall 22.

[0109] At this stage, the third angle is slightly greater than 90°, approximately 105°. Door 20 can continue to open to the third angle (…). Figure 10 (And will not touch the cabinet.)

[0110] To allow the refrigerator to open to a greater angle when not integrated into a cabinet, this embodiment extends the first slot 50 and the second slot 60:

[0111] Phase 5

[0112] Reference Figure 5 , Figure 6 and Figure 11 , Figure 6The middle arrow indicates the direction of movement of the two axes relative to the two slots. The first slot 50 also has a sixth positioning position 506, which is located between the fifth positioning position 505 and the third positioning position 503. The second slot 60 also has a sixth guide position 606, which is farther away from the front wall 22 and closer to the side wall 21 than the fifth guide position 605.

[0113] As the door 20 continues to open from the third angle to the maximum angle, the second shaft 42 moves from the fifth guide position 605 to the sixth guide position 606 along the direction close to the side wall 21 and away from the front wall 22, causing the first shaft 41 to retract from the fifth positioning position 505 to the sixth positioning position 506. Retraction means moving in the opposite direction to the previous stage.

[0114] Since the first shaft 41 retracts during the fifth stage, the fifth positioning position 505 can be set at the end of the first groove 50.

[0115] When the door 20 is opened to more than 90°, the side edge 23 of the door 20 is already located inside the reference plane O. The first axis 41 moves away from the front wall 22 and the side wall 21, which is equivalent to the door 20 driving the first groove 50 to move closer to the reference plane O. That is, the side edge 23 of the door 20 moves outward. This can prevent the door 20 from continuing to move inward and occupying the space in front of the storage room, thus preventing drawers in the storage room from being blocked by the door 20 and unable to be pulled out.

[0116] The trajectory line of the first axis 41 between the fifth positioning position 505 and the sixth positioning position 506 is the fourth positioning curve segment 54, and the extension direction of the fourth positioning curve segment 54 is opposite to the direction of the trajectory line in the first four stages; the trajectory line of the second axis 42 between the fifth guide position 605 and the sixth guide position 606 is the fourth guide curve segment 64, and the fourth guide curve segment 64 extends in a direction closer to the side wall 21 and farther away from the front wall 22. In other embodiments, the trajectory line between the fifth positioning position 505 and the sixth positioning position 506, or the trajectory line between the fifth guide position 605 and the sixth guide position 606, may also have a straight line segment.

[0117] From the fifth guide position 605 to the sixth guide position 606, the distance from the fourth guide curve segment 64 to the front wall 22 gradually increases, causing the end of the second groove 60 to be slightly tilted backward.

[0118] In other words, when the door 20 continues to open from the third angle to the maximum angle, the first axis 41 moves along the fourth positioning curve segment 54 away from the side wall 21 and the front wall 22, while the second axis 42 moves along the fourth guide curve segment 64 towards the side wall 21 and away from the front wall 22.

[0119] In some embodiments of this application, the angle between the tangent of the first axis 41 at any point on the fourth positioning curve segment 54 and the tangent of the second axis 42 at the corresponding point on the fourth guide curve segment 64 is greater than 45°, ensuring that the door 20 does not shake.

[0120] In the above description, the trajectory extension direction of the first axis 41 is referenced to the movement direction of the first axis 41 relative to the first groove 50 during the opening of the door body 20, and the trajectory extension direction of the second axis 42 is referenced to the movement direction of the second axis 42 relative to the second groove 60 during the opening of the door body 20.

[0121] The trajectory curve of the second groove 60 is further described below: (Refer to...) Figure 5 During the opening process of the door 20, the opening angle of the door 20 is within the range of 0~20°: in order to make the door 20 move inward and ensure that β<α, the curvature of the trajectory is relatively large during this stage.

[0122] The opening angle of the door 20 is in the range of 20° to 43°: Since the door 20 has already partially moved inward in the previous stage, it has shared the pressure of the door 20 moving inward in this stage, so the curvature of the trajectory can be reduced in this stage.

[0123] The opening angle of the door 20 is within the range of 43°~60°: At this stage, the danger point where the side edge of the door 20 exceeds the reference plane the most has been passed. There is no problem that the angle between the two tracks is too small. Therefore, this stage is mainly about smooth operation, and the track curvature can be further reduced.

[0124] The opening angle of the door 20 is within the range of 60°~90°: In order to avoid the problem of the angle between the two axes being too small, the curvature of the trajectory can be increased in this stage.

[0125] When the door 20 opens at an angle between 90° and 120°: to further increase the angle between the two axes, the direction of curvature of the trajectory changes during this stage, but the magnitude is small. Therefore, this stage is mainly characterized by smooth operation, with a change in the direction of curvature but a small overall curvature.

[0126] In the embodiments of this application, the door 20 rotates around a changing point during the opening process, and the changing point is traceable, with its trajectory being (X=(X1+X2+X3+X4) / 4, Y=(Y1+Y2+Y3+Y4) / 4).

[0127] Where X represents the distance from the point of change to the side wall of the door; Y represents the distance from the point of change to the front wall of the door.

[0128] X1 represents the distance from the center point of the first shaft 41 in the first groove 50 to the side wall of the door when the door is closed; X2 represents the distance from the center point of the second shaft 42 in the second groove 60 to the side wall of the door when the door is closed; X3 represents the distance from the center point of the first shaft 41 in the first groove 50 to the side wall of the door when the door is rotated open; X4 represents the distance from the center point of the second shaft 42 in the second groove 60 to the side wall of the door when the door is rotated open.

[0129] Y1 represents the distance from the center point of the first shaft 41 in the first groove 50 to the front wall of the door when the door is closed; Y2 represents the distance from the center point of the second shaft 42 in the second groove 60 to the front wall of the door when the door is closed; Y3 represents the distance from the center point of the first shaft 41 in the first groove 50 to the front wall of the door when the door is rotated open; Y4 represents the distance from the center point of the second shaft 42 in the second groove 60 to the front wall of the door when the door is rotated open.

[0130] Specific reference Figure 12 The center point of the first axis 41 in the first groove 50 is O, and the center point of the second axis 42 in the second groove 60 is Q. When the door is closed, the distance from point O to the side wall of the door is a, the distance from point O to the front wall of the door is b, the distance between point O and point Q is L, and the angle between the line connecting OQ and the horizontal direction is m. The following takes the straight segment distance of the first half of the first groove 50 as k, and the curved segment of the second half of the first groove 50 as an arc as an example. The radius of the arc segment is R. The straight segment and the arc segment are connected at point P and the arc segment is tangent to the straight segment. When the first axis 41 moves to point P, the rotation angle of the door is the second angle s. When the door rotates to the third angle t, the first axis 41 retracts in the first groove 50.

[0131] In the closed state, point O is located at (a, b), and point P is located at (a+L*cosm, bL*sinm).

[0132] Reference Figure 13 ① When the rotation angle of the door is n, and the distance point O moves is k (0 < k ≤ K), 0 ≤ n ≤ s,

[0133] Before rotation, point O: X1=a, Y1=b;

[0134] Before rotation, point Q: X2 = a + L*cosm, Y2 = bL*sinm;

[0135] After rotation, point O: X3 = a + k * cosn, Y3 = bk * sinn;

[0136] After rotation, point Q is: X4 = a + k * cosn + L * cos(n + m), Y4 = bk * sinn - sin(n + m).

[0137] Reference Figure 14② When the rotation angle of the door is n, s≤n≤t, the distance between point O before and after rotation can be calculated as 2R*[sin(ns) / 2].

[0138] After rotation, point O: X3=a, Y3=b; After rotation, point Q: X4= a+L*cosm; Y4= bL*sinm;

[0139] Before rotation, point O: X1 = a + 2R * [sin(ns) / 2] * [cos(3n-s) / 2],

[0140] Y1=b-2R*[sin(ns) / 2]*[sin(3n-s) / 2];

[0141] Before rotation, point Q: X2 = a + 2R*[sin(ns) / 2]*[cos(3n-s) / 2] + L*cos(n+ms),

[0142] Y2=b-2R*[sin(ns) / 2]*[sin(3n-s) / 2]- L*sin(n+ms);

[0143] Reference Figure 15 ③ When the rotation angle of the door is n, n≥t, the distance of point O before and after rotation can be calculated as 2R*[sin(nt) / 2];

[0144] Before rotation, point O: X1=a, Y1=b;

[0145] Before rotation, at point Q: X2 = a + L * cosm; Y2 = bL * sinm;

[0146] After rotation, point O: X3 = a - 2R * [sin(nt) / 2] * [cos(180° - (3n - t) / 2)],

[0147] Y3=b+2R*[sin(nt) / 2]*[sin(180-(3n-t) / 2)];

[0148] After rotation, point Q: X4 = a - 2R*[sin(nt) / 2]*[cos(180°-(3n-t) / 2)] + L*cos(m+nt),

[0149] Y4=b+2R*[sin(nt) / 2]*[sin(180-(3n-t) / 2)]-L*sin(m+nt);

[0150] When the rotation angle is s, k=K, and the point of change satisfies ①②, so s can be obtained;

[0151] When the rotation angle is t, the point of change satisfies ②③, and t can be obtained.

[0152] In a second embodiment of the dual-axis hinge of this application:

[0153] The difference between this embodiment and the first embodiment is that: (Refer to...) Figure 5 and Figure 16 In the first embodiment, the end of the second groove 60 is slightly tilted backward, that is, the sixth guide position 606 is far away from the front wall relative to the fifth guide position 605, so that the first shaft 41 is retracted from the fifth positioning position 505 to the sixth positioning position 506 in the first groove 50; in this embodiment, the end of the second groove 60 is bent forward, that is, the fifth guide position 605 is close to the front wall relative to the fourth guide position 604, so that the first shaft 41 will not retract in the first groove 50 (described below).

[0154] Therefore, the sixth positioning position 506 is located at the end of the first groove 50, and a rear positioning curve groove is formed between the third positioning position 503 and the sixth positioning position 506.

[0155] Reference Figures 17 to 20 Since the trajectory trends of the first to fourth stages of this embodiment are largely the same as those of the above embodiments, they will not be described again here.

[0156] Phase 5

[0157] Reference Figure 16 and Figure 21 The first groove 50 also has a sixth positioning position 506, which is closer to the side wall 21 and the front wall 22 than the fifth positioning position 505; the second groove 60 also has a sixth guide position 606, which is closer to the side wall 21 and the front wall 22 than the fifth guide position 605.

[0158] When the door 20 continues to open from the third angle to the maximum angle, the first shaft 41 moves from the fifth positioning position 505 to the sixth positioning position 506 along the direction close to the side wall 21 and the front wall 22; the second shaft 42 moves from the fifth guide position 605 to the sixth guide position 606 along the direction close to the side wall 21 and the front wall 22.

[0159] The motion trajectory of the first axis 41 between the fifth positioning position 505 and the sixth positioning position 506 is a fourth positioning curve segment 54, which extends towards the side wall 21 and the front wall 22. The motion trajectory of the second axis 42 between the fifth guide position 605 and the sixth guide position 606 is a fourth guide curve segment 64, which extends towards the side wall 21 and the front wall 22. In other embodiments, the motion trajectory between the fifth positioning position 505 and the sixth positioning position 506, or the motion trajectory between the fifth guide position 605 and the sixth guide position 606, may also have straight line segments.

[0160] When the door 20 continues to open from the third angle to the maximum angle, the first axis 41 moves along the fourth positioning curve segment 54 toward the side wall 21 and the front wall 22, while the second axis 42 moves along the fourth guide curve segment 64 toward the side wall 21 and the front wall 22.

[0161] In some embodiments of this application, the angle between the tangent of the first axis 41 at any point on the fourth positioning curve segment 54 and the tangent of the second axis 42 at the corresponding point on the fourth guide curve segment 64 is greater than 20°, ensuring that the door 20 does not shake.

[0162] During this stage, the first axis 41 moves with a small amplitude, and the curvature of the fifth guide curve segment 65 changes with a small amplitude, mainly operating smoothly.

[0163] In this embodiment, when the door 20 is opened from the open state to the maximum angle state, the first shaft 41 moves from one end of the first groove 50 to the other end, and the second shaft 42 moves from one end of the second groove 60 to the other end without any retraction. The movement trend of the door 20 is more constant, and the dual-axis operation is smoother without any reversal.

[0164] In a third embodiment of the dual-axis hinge of this application:

[0165] Reference Figure 5 and Figure 22 In this embodiment, the front part of the straight groove section of the first groove 50 in the above two embodiments is set to be non-parallel to the front surface of the box body 10.

[0166] The first groove 50 generally includes a front positioning curved groove in the front part, a positioning straight groove in the middle part, and a rear positioning curved groove in the rear part. Corresponding to the change in the shape of the front end of the first groove 50, the door 20 differs from the two embodiments described above in the initial opening stage. In other embodiments, the front part of the first groove 50 can also be a straight groove.

[0167] Phase 1

[0168] Reference Figure 22 and Figure 23 The first groove 50 includes a seventh positioning position 507 and an eighth positioning position 508. The eighth positioning position 508 is closer to the side wall 21 and farther from the front wall 22 than the seventh positioning position 507.

[0169] Door 20 opens from the closed state to the fourth angle (e.g.) Figure 23When the door 20 rotates, the first shaft 41 moves from the seventh positioning position 507 to the eighth positioning position 508. The first shaft 41 moves towards the side wall 21 (outer side) and away from the front wall 22 (rear side), which is equivalent to the first groove 50 moving inward and forward relative to the first shaft 41, so that the door 20 moves inward and forward a certain distance while rotating. The door 20 moves inward, which drives the side edge 23 inward to avoid the side edge 23 colliding with the cabinet 100. The door 20 moves forward to avoid the door seal on the door 20 rubbing against the front surface of the cabinet 10 while moving inward.

[0170] When the fourth angle is open, the distance β1 of the side edge 23 extending beyond the reference plane O is less than α. In other embodiments, the side edge 23 can also be designed to move to the inside of the reference plane O. This would require the door body 20 to rotate a small angle and then move a large distance inward, which would affect the feel and smoothness of opening the door.

[0171] The second groove 60 includes a seventh guide position 607 and an eighth guide position 608. The eighth guide position 608 is farther away from the front wall 22 and closer to the side wall 21 than the seventh guide position 607.

[0172] When the door 20 is opened from the closed state to the fourth angle, the second shaft 42 moves from the seventh guide position 607 to the eighth guide position 608. Under this guidance, the first shaft 41 moves from the seventh positioning position 507 to the eighth positioning position 508.

[0173] The motion trajectory of the first axis 41 between the seventh positioning position 507 and the eighth positioning position 508 is the sixth positioning curve segment 56. The motion trajectory of the second axis 42 between the seventh guide position 607 and the eighth guide position 608 is the sixth guide curve segment 66. Both the sixth positioning curve segment 56 and the sixth guide curve segment 66 are spline curves extending away from the front wall 22 and closer to the side wall 21. In other embodiments, the motion trajectories of the first axis 41 and / or the second axis 42 may also be straight lines.

[0174] Phase Two

[0175] Reference Figure 22 and Figure 24 The first groove 50 also has a third positioning position 503, which is closer to the side wall 21 than the eighth positioning position 508, and the line connecting the third positioning position 503 and the eighth positioning position 508 is parallel to the front surface of the box 10 when the door 20 is closed; the second groove 60 also has a third guide position 603, which is closer to the side wall 21 and farther from the front wall 22 than the eighth guide position 608.

[0176] When the door 20 continues to open from the fourth angle to the fifth angle, the first axis 41 moves from the eighth positioning position 508 toward the third positioning position 503 toward the side wall 21. At the same time, the second axis 42 moves from the eighth guide position 608 toward the seventh guide position 607 along the direction of being close to the side wall 21 and away from the front wall 22. This allows the door 20 to move inward a certain distance while rotating. As the door 20 continues to move inward, the side edge 23 moves inward relative to the reference plane O, thus avoiding a collision between the side edge 23 and the cabinet 100.

[0177] The trajectory of the first axis 41 between the eighth positioning position 508 and the third positioning position 503 is the seventh positioning straight line segment 57; the trajectory of the second axis 42 between the eighth guide position 608 and the third guide position 603 is the seventh guide curve segment 67.

[0178] Reference Figures 25 to 27 Since the third, fourth and fifth stages of this embodiment are largely the same as those in the first or second embodiment, they will not be described again here.

[0179] In all three types of track grooves described above, the first shaft 41 moves relative to the straight section of the first groove 50. When the door 20 is closed, the straight section of the first groove 50 is parallel to the front wall 22 (hereinafter referred to as the horizontal groove). This means the horizontal groove occupies less space in the front-back direction of the door 20, allowing for a more compact track groove and a thinner door 20. If the door 20 is thicker, when it is opened to 90°, the inner side of the door 20 will occupy more space in front of the storage compartment, thus affecting the extraction of drawers and other items inside the storage compartment. Therefore, the horizontal groove design of this application allows for a thinner door 20, ensuring that even if the door 20 moves further inward, it will not interfere with the extraction of drawers and other items inside the storage compartment.

[0180] In the embodiments of this application, the minimum distance from the first groove 50 to the front wall 22 is not less than the minimum distance from the second groove 60 to the front wall 22, and the minimum distance from the first groove 50 to the side wall 21 is not less than the minimum distance from the second groove 60 to the side wall 21. Since the first groove 50 has a horizontal groove, it occupies less of the thickness space of the door body, and the space occupied by the two grooves on the door body is completely determined by the second groove 60.

[0181] Moreover, refer to Figure 28As shown, the horizontal groove design of the first groove 50 in this application allows the first groove 50 to be closer to the front wall 22 of the door body 20. With the first axis 41 at the starting end as a reference, the distance by which the side edge 23 of the door body 20 extends beyond the reference plane O when it rotates around the first axis 41 is smaller than that when the first groove is an inclined groove in the related art (the dotted line in the figure indicates an example of an inclined groove in the related art), that is, X < Y in the figure. Thus, the distance that the door body 20 needs to move inward is smaller.

[0182] Furthermore, the inward shift of the door 20 is essentially a horizontal displacement of the first shaft 41. In related technologies, the first groove is in the form of an inclined groove. When the door opens and moves inward, the displacement of the first shaft relative to the inclined groove is decomposed into the horizontal direction to represent the inward movement distance of the door. However, in this application, the first shaft 41 moves horizontally, and its actual displacement is the inward movement distance. Therefore, when the first shaft undergoes the same displacement relative to the first groove, the inward movement distance of the door 20 in this application is greater, improving the inward movement efficiency of the door 20.

[0183] Furthermore, in related technologies, the dual axes require greater actual displacement to achieve the inward movement effect of this application. The longer the actual displacement, the more severe the wear of the contact motion. Dual-axis dual-groove systems require high precision, and the gaps caused by wear can lead to misalignment of the upper and lower parts of the door, resulting in problems such as door jamming and shaking. In contrast, the dual axes in this application undergo less actual displacement during movement, which can effectively reduce wear and increase the service life of the dual grooves.

[0184] In related technologies (e.g., CN109470005B), refer to Figure 29 During the opening process, the door 20 rotates in place around the first axis. Before or after the door rotates in place around the first axis, the door is displaced in the horizontal direction. The door switches from rotational offset motion to rotational motion only, and there is a significant change in force, which makes the movement prone to jamming.

[0185] Furthermore, since the dual-axis and dual-groove systems are not constantly in motion when the door is opened, there is a moment before or after the rotational motion around one axis. At this moment, the axis that stops moving or the axis that starts moving will generate acceleration, which will exert force on the groove, causing wear on the groove. The discontinuity of the motion state will result in a poor feel when opening and closing the door.

[0186] In this application, during the opening process of the door 20, the first axis 41 and the second axis 42 are constantly in motion. That is, the position of the first axis 41 relative to the first groove 50 and the position of the second axis 42 relative to the second groove 60 are constantly changing, without any sudden changes in force, resulting in smoother movement. Moreover, the dual-axis motion of this application does not involve sudden changes in motion state and does not produce changes in acceleration. Therefore, the first groove 50 and the second groove 60 are less prone to wear compared to related technologies.

[0187] In related technologies, the second groove has abrupt changes and sharp corners, which can easily lead to wear and uneven movement. In contrast, the first groove 50 and the second groove 60 in this application are relatively smooth. Compared with the groove structure in related technologies, the door body 20 in this application operates more smoothly, and the track groove is less prone to wear.

[0188] According to an embodiment of this application, hinge assemblies 30 are respectively provided between the upper and lower ends of the door body 20 and the box body 10, so as to stably support the movement of the door body 20.

[0189] According to some embodiments of this application, refer to Figures 30 to 32 The first shaft 41 and the second shaft 42 are fixed to the housing 10 via a hinge plate 40. Specifically, the hinge plate 40 is fixedly connected to the housing 10 and may include: a connecting portion 401 connected to the housing 10; and an extension portion 402 extending forward from the connecting portion 401 and having a horizontal plate shape. The connecting portion 401 may be fastened to the housing 10 by fasteners such as screws, pins, and bolts.

[0190] Specific reference Figure 30 For the hinge at the upper end of the door body 20, it may include a hinge plate 40 connected to the upper end of the housing 10, and a first shaft 41 and a second shaft 42 connected to the hinge plate 40 to form a rotation axis. The hinge plate 40, the first shaft 41 and the second shaft 42 may be integrally formed, but instead, the hinge plate 41, the first shaft 41 and the second shaft 42 may be provided separately and assembled with each other.

[0191] The first shaft 41 and the second shaft 42 can be formed on the extension 402 and extend vertically downward.

[0192] Reference Figure 31 , Figure 32 For the hinge at the lower end of the door body 20, the connecting part 401 is connected to the front end face of the housing 10. The first shaft 41 and the second shaft 42 extend upward on the hinge plate 40. Corresponding to the position of the hinge plate 40, the upper and lower ends of the door body 20 are provided with a first groove 50 and a second groove 60.

[0193] In the above embodiments, the first shaft 41 and the second shaft 42 are disposed on the hinge plate 40, and the first groove 50 and the second groove 60 correspond to the door body 20; in other embodiments, the first shaft 41 and the second shaft 42 may be disposed on the door body 20, while the first groove 50 and the second groove 60 are disposed on the hinge plate 40; or, in another embodiment, the first shaft 41 and the second groove 60 are disposed on the hinge plate 40, and the second shaft 42 and the first groove 50 are disposed on the door body 20; or the first shaft 41 and the second groove 60 are disposed on the door body 20, and the second shaft 42 and the first groove 50 are disposed on the hinge plate 40.

[0194] In some embodiments of this application, since the first shaft 41 mainly serves a positioning function and the second shaft 42 mainly serves a guiding function, the first shaft 41 is the main shaft and the second shaft 42 is the auxiliary shaft. The force is mainly concentrated on the main shaft. The diameter of the first shaft 41 can be set to be larger than that of the second shaft 42. In this way, the first shaft 41 is thicker, has better force distribution, and has sufficient strength to withstand the force when the door is tilted.

[0195] In some embodiments of this application, reference continues to be made to... Figure 30 , Figure 32 The mounting block 70 is installed on the door body 20 at a position opposite to the hinge plate 40, and the first groove 50 and the second groove 60 are set on the mounting block 70.

[0196] The mounting block 70 includes an upper mounting block 71 disposed at the upper end of the door body 20 and a lower mounting block 72 disposed at the lower end of the door body 20.

[0197] The upper mounting block 71 may include a plate 711 and an extension 712 formed by extending downward from the lower surface of the plate 711. A first groove 50 and a second groove 60 are recessed downward from the upper surface of the plate 711 into the extension 712. The shape of the extension 712 corresponds to the track groove.

[0198] The upper end of the door body 20 is provided with an upper receiving groove 24. The upper mounting block 71 is inserted into the upper receiving groove 24, and then the plate 711 is fastened to the door body 20 by screws or the like.

[0199] The lower mounting block 72 has the same structure as the upper mounting block 71, including the plate 711, extension 712, and track groove. The extension 712 of the lower mounting block 72 extends upward from the upper surface of the plate 711, and the first groove 50 and the second groove 60 are recessed upward from the lower surface of the plate 711 onto the extension 712. Simultaneously, a lower receiving groove 25 is provided at the lower end of the door body 20. The lower mounting block 72 is inserted into the lower receiving groove 25, and then the plate 711 is fastened to the door body 20 using screws or the like. The mounting block 70 can be made of POM material, which has strong abrasion resistance and can improve the service life of the hinge.

[0200] In some embodiments of this application, the lower mounting block 72 may have a locking hook structure. Specifically, the lower mounting block 72 includes a locking hook 721 disposed inside the plate 711. The locking hook 721 extends inward and bends backward to form a hook, the opening of the locking hook 721 faces the plate 711, and the free end of the locking hook 721 is located on the rear side.

[0201] An outwardly extending stop 403 is provided on the inner side of the hinge plate 40 at the lower end of the door body 20. When the door body 20 is closed, the locking hook 721 on the door body 20 hooks onto the stop 403 on the hinge plate 40, thereby locking the door body 20 and preventing the door body 20 from not closing tightly, which would affect the refrigeration and freezing effect of the refrigerator. When the door body 20 is opened, the locking hook 721 deforms under force and overcomes the obstruction of the stop 403, thereby disengaging from the stop 403. It should be noted that the locking hook 721 can also be provided on the upper mounting block 71, while the stop 403 is correspondingly provided on the hinge plate 40 at the upper end of the door body 20.

[0202] In some embodiments of this application, the first shaft 41 and the second shaft 42 may be tapered, meaning the free ends of the first shaft 41 and the second shaft 42 away from the hinge plate 40 have relatively small diameters. Correspondingly, the first groove 50 and the second groove 60 are tapered flared openings. This facilitates the installation of the first shaft 41 into the first groove 50 and the second shaft 42 into the second groove 60, resulting in a more refined fit between the two shafts and the two grooves, further reducing door body 20 wobbling caused by rough fit. Specifically, the angle between the side of the first shaft 41 and the second shaft 42 and the vertical centerline can be set to 0~5°.

[0203] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A refrigerator characterized by comprising: include: The housing has a hinge plate, on which a first shaft and a second shaft, both tapered, are provided. The door body has a first groove that mates with the first shaft and a second groove that mates with the second shaft. The first groove and the second groove are tapered flared openings. The side of the door body near the hinge plate is a side wall. The door body has a front wall and a side edge located at the intersection of the front wall and the side wall. When the door is closed, the first shaft is located at the starting end of the first groove, the second shaft is located at the starting end of the second groove, and the starting end of the first groove is farther from the front wall and closer to the side wall than the starting end of the second groove; the first groove includes a positioning straight groove extending from the starting end toward the side wall, and a rear positioning curved groove extending from the end of the positioning straight groove toward the front wall and the side wall; the extending direction of the positioning straight groove is parallel to the front surface of the box body; The first groove includes an initial positioning position and a third positioning position, wherein the third positioning position is closer to the side wall than the initial positioning position; When the door is opened from the closed state to the second angle, the first shaft moves from the initial positioning position to the third positioning position along the positioning straight groove, so that the door moves inward a certain distance while rotating; The first groove also has a fourth positioning position, which is closer to the side wall and the front wall than the third positioning position; When the door continues to open from the second angle to 90°, the first axis moves from the third positioning position to the fourth positioning position along the rear positioning curve groove, so that the door moves inward a third distance while rotating. The first groove also has a fifth positioning position, which is closer to the side wall and the front wall than the fourth positioning position; When the door continues to open from 90° to the third angle, where the third angle is ≥90°, the first axis moves from the fourth positioning position to the fifth positioning position along the rear positioning curve groove.

2. The refrigerator according to claim 1, characterized in that, The second groove includes a front guide curve groove extending from the starting end toward the direction away from the front wall and close to the side wall, and a rear guide curve groove extending from the end of the front guide curve groove toward the direction close to the front wall and close to the side wall. As the door continues to open from the third angle, the first axis continues to move along the rear positioning curve groove toward the side wall, and the second axis continues to move along the rear guide curve groove toward the side wall.

3. The refrigerator according to claim 2, characterized in that, The side edge is located on the concave side of the front guide curve groove and the rear guide curve groove.

4. The refrigerator according to claim 2, characterized in that, The angle between the tangent of the first axis at any point on the rear positioning curve groove and the tangent of the second axis at the corresponding point on the rear guide curve groove is greater than 20°.

5. The refrigerator according to claim 1, characterized in that, The second groove includes a front guide curve groove extending from the starting end toward the direction away from the front wall and close to the side wall, and a rear guide curve groove extending from the end of the front guide curve groove toward the direction away from the front wall and close to the side wall. As the door continues to open from the third angle, the first axis moves away from the side wall along the rear positioning curve groove, and the second axis continues to move closer to the side wall along the rear guide curve groove.

6. The refrigerator according to claim 5, characterized in that, The side edge is located on the concave side of the front guide curve groove and on the convex side of the rear guide curve groove.

7. The refrigerator according to claim 1, characterized in that, The centerline of the positioning straight groove is tangent to the centerline of the rear positioning curved groove.

8. The refrigerator according to claim 2 or 5, characterized in that, The angle between the centerline of the positioning straight groove and the tangent at any point on the centerline of the front guide curved groove is greater than 45°.

9. The refrigerator according to claim 1, characterized in that, The angle between the side of the first axis and / or the second axis and the vertical centerline is 0~5°.

10. The refrigerator according to claim 1, characterized in that, The first shaft is thicker than the second shaft.

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