refrigerator

Abstract

This invention proposes a refrigerator, belonging to the field of household appliance technology. The refrigerator includes a cabinet and a door. The side of the cabinet near the hinge assembly is a reference plane, which divides the cabinet into an inner and outer side. The cabinet is located on the inner side. The hinge assembly includes a first shaft and a first groove, a second shaft and a second groove, allowing the door to move inward during its opening to a third angle. The first groove is a straight groove and is perpendicular to the side wall when the door is closed. The first groove has a fifth positioning position and a sixth positioning position. When the first groove is located on the door, the sixth positioning position is farther from the side wall than the fifth positioning position. When the first shaft is located on the door, the sixth positioning position is farther from the reference plane than the fifth positioning position. When the first shaft moves from the fifth positioning position to the sixth positioning position, the door continues to open from the third angle to its maximum angle. The hinge structure of this refrigerator ensures that the door does not extend beyond or excessively exceed the reference plane 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. With this type of hinge structure, the corners of the door will extend beyond the side of the refrigerator body during opening. For built-in refrigerators, which are generally placed inside cabinets, it is required that the corners of the door do not extend too much beyond the dimensions of the refrigerator body when the door is opened to 90 degrees; otherwise, the use of the refrigerator will be limited. Summary of the Invention

[0003] This invention at least partially solves one of the technical problems in the related art.

[0004] 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.

[0005] The refrigerator according to this application includes: a cabinet; a door, rotatably connected to the cabinet via a hinge assembly to open or close the cabinet, wherein the side of the door closest to the hinge assembly is a side wall, and the front surface of the door is a front wall; wherein, a plane on the cabinet containing the side closest to the hinge assembly is defined as a reference plane, and the cabinet is divided into an inner side and an outer side by the reference plane, with the cabinet located on the inner side; the hinge assembly includes a first shaft and a first groove that cooperate with each other, and a second shaft and a second groove that cooperate with each other, so that the door has a phase of moving inward during the opening to a third angle; wherein, the third angle is ≥90°; the first groove is a straight groove and its extension direction is perpendicular to the side wall when the door is in the closed state; the first groove has a fifth positioning position and a sixth positioning position, wherein the sixth positioning position is farther from the side wall than the fifth positioning position when the first groove is provided on the door, and the sixth positioning position is farther from the reference plane than the fifth positioning position when the first shaft is provided on the door; when the first shaft moves from the fifth positioning position to the sixth positioning position, the door continues to open from the third angle to the maximum angle.

[0006] In some embodiments of the refrigerator of this application, when the door is in the closed state, the first groove is located between the front end of the second groove and the side wall; the second groove has a fifth guide position and a sixth guide position that is closer to the front wall and the side wall than the fifth guide position; during the process of the door opening from the third angle to the maximum angle, the second shaft moves from the fifth guide position to the sixth guide position.

[0007] In some embodiments of the refrigerator of this application, when the door is opened from the closed state to a first angle, the first shaft moves from the first positioning position to the second positioning position relative to the first groove, and the second shaft moves from the first guide position to the second guide position relative to the second groove; wherein, when the first groove and the second groove are provided on the door, the second positioning position is farther away from the side wall than the first positioning position, when the first shaft and the second groove are provided on the door, the second positioning position is closer to the reference plane than the first positioning position, and the second guide position is farther away from the front wall and the side wall than the first guide position, so that the door moves outward a certain distance.

[0008] In some embodiments of the refrigerator of this application, when the door is opened from the closed state to a first angle, the first shaft moves from the first positioning position to the second positioning position relative to the first groove, and the second shaft moves from the first guide position to the second guide position relative to the second groove; wherein, when the first groove and the second groove are provided on the door, the second positioning position is closer to the side wall than the first positioning position, and when the first shaft and the second groove are provided on the door, the second positioning position is farther away from the reference plane than the first positioning position, and the second guide position is farther away from the front wall and closer to the side wall than the first guide position, so that the door moves inward a certain distance.

[0009] In some embodiments of the refrigerator of this application, when the door is opened from a first angle to a second angle, the second angle is less than 90°, the first axis moves from a second positioning position to a third positioning position, and the second axis moves from a second guide position to a third guide position; wherein, when the first groove and the second groove are provided on the door, the third positioning position is closer to the side wall than the second positioning position, when the first axis and the second groove are provided on the door, the third positioning position is farther away from the reference plane than the second positioning position, and the third guide position is farther away from the front wall and closer to the side wall than the second guide position, so that the door moves inward a certain distance.

[0010] In some embodiments of the refrigerator of this application, the lateral movement distance of the door rotating by a unit angle between the closed state and the first angle is μ1, and the lateral movement distance of the door rotating by a unit angle between the first angle and the second angle is μ2, where μ1 < μ2.

[0011] In some embodiments of the refrigerator of this application, the movement trajectory of the second axis from the closed state to the first angle is the first guide trajectory line, and the movement trajectory from the first angle to the second angle is the second guide trajectory line, wherein the first guide trajectory line is shorter than the second guide trajectory line.

[0012] In some embodiments of the refrigerator of this application, during the process of the door continuing to open from the second angle to the third angle, the first shaft moves from the third positioning position to the fifth positioning position relative to the first groove, the second shaft moves from the third guide position to the fifth guide position relative to the second groove, and the door moves outward a certain distance; wherein, the fifth guide position is farther away from the front wall and closer to the side wall than the third guide position, when the first groove and the second groove are provided on the door, the fifth positioning position is farther away from the side wall than the third positioning position, and when the first shaft and the second groove are provided on the door, the fifth positioning position is closer to the reference plane than the third positioning position.

[0013] In some embodiments of the refrigerator of this application, when the door is opened to 90°, the front wall is flush with the reference plane, or the front wall is located inside the reference plane.

[0014] In some embodiments of the refrigerator of this application, the angle between the motion trajectory line of the second axis in the second groove and the motion trajectory line of the first axis in the first groove is greater than 45°. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a perspective view of a refrigerator according to an embodiment of this application;

[0017] Figure 2 This is a top view of a refrigerator according to the first embodiment of this application;

[0018] Figure 3 yes Figure 2 Enlarged view from direction A;

[0019] Figure 4 This is a schematic diagram showing the relative positions of the first and second axes of a refrigerator according to the first embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the first and second compartments of a refrigerator according to the first embodiment of this application;

[0021] Figure 6 This is a partial view of the refrigerator door in the first embodiment of this application, in the open first angle state;

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

[0023] Figure 8 This is a partial view of the refrigerator door in a 90° open state according to the first embodiment of this application;

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

[0025] Figure 10 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;

[0026] Figure 11 This is a partial view of the refrigerator door in the closed state according to the first embodiment of this application;

[0027] Figure 12 This is a partial view of the refrigerator door according to the first embodiment of this application at an opening first angle;

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

[0029] Figure 14 This is a partial view of the refrigerator door according to the first embodiment of this application, with the door positioned between a second angle and 90°.

[0030] Figure 15 This is a partial view of the refrigerator door of the first embodiment of this application, with the door open at 90°.

[0031] Figure 16 This is a partial view of the refrigerator door according to the first embodiment of this application at its maximum opening angle;

[0032] Figure 17 This is a partial enlarged view of the hinge assembly of the refrigerator according to the second embodiment of this application;

[0033] Figure 18 This is an exploded view of the hinge assembly of a refrigerator according to the second embodiment of this application;

[0034] Figure 19 This is a view of the hinge plate and slider of a refrigerator according to the second embodiment of this application;

[0035] Figure 20 This is a partial enlarged view of the hinge assembly of the refrigerator according to the third embodiment of this application;

[0036] Figure 21 This is a partial top view of the refrigerator according to the third embodiment of this application at the hinge assembly;

[0037] Figure 22This is a comparison view of the trajectory groove in the first and third embodiments of the refrigerator according to the present application;

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

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

[0041] Figure 26 This is a partial view of the refrigerator door in a 90° open 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 partial top view of the refrigerator according to the fourth embodiment of this application at the hinge assembly;

[0044] Figure 29 This is a partial view of the refrigerator door in the first open angle state according to the fourth embodiment of this application;

[0045] Figure 30 This is a partial view of the refrigerator door in the second open angle state according to the fourth embodiment of this application;

[0046] Figure 31 This is a partial view of the refrigerator door in a 90° open state according to the fourth embodiment of this application;

[0047] Figure 32 This is a partial view of the refrigerator door in the third open angle state according to the fourth embodiment of this application;

[0048] Figure 33 This is a partial view of the refrigerator door in the maximum opening angle state according to the fourth embodiment of this application;

[0049] Figure 34 This is a partial view of the refrigerator door in the closed state according to the fourth embodiment of this application;

[0050] Figure 35 This is a partial view of the refrigerator door in the first open angle state according to the fourth embodiment of this application;

[0051] Figure 36 This is a partial view of the refrigerator door in the second open angle state according to the fourth embodiment of this application;

[0052] Figure 37 This is a partial view of the refrigerator door in the maximum opening angle state according to the fourth embodiment of this application;

[0053] Figure 38 This is a view comparing the refrigerator according to the embodiments of this application with the track groove in the related art. Detailed Implementation

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Reference Figure 1 and Figure 2 According to one embodiment of the present invention, a refrigerator 1 includes a cabinet 10, a storage compartment formed inside the cabinet 10, a cold air supply device for generating cold air, and a door 20 for opening and closing the storage compartment.

[0059] The container 10 is generally rectangular in shape and includes a liner and an outer shell. A storage compartment is formed inside the liner, and the outer shell is located outside the liner. Foam insulation material, configured to form an insulated storage compartment, can be filled between the liner and the outer shell.

[0060] The storage compartment can be divided into an upper storage compartment and a lower storage compartment by a central partition wall. The upper storage compartment can be used as a refrigerator compartment, while the lower storage compartment can be used as a freezer compartment. Alternatively, the upper storage compartment can be used as a freezer compartment and the lower storage compartment can be used as a refrigerator compartment.

[0061] However, unlike this embodiment, the refrigerator may be equipped with a vacuum chamber, a variable temperature chamber, etc., and all aspects of the present invention can be applied thereto.

[0062] The storage compartment may have an opening on its front surface for storing or retrieving food ingredients. The opening may be opened or closed by a door 20. The storage compartment may be opened or closed by multiple rotating doors 20. In other embodiments, the storage compartment may also be opened or closed by a drawer-type door, which is configured to be inserted into and pulled out of the storage compartment.

[0063] The cold air supply equipment is configured to generate cold air through a circulating cooling loop and to supply the generated cold air to the storage compartment. The cold air supply equipment may include a cooling loop device with a compressor, condenser, capillary tube and evaporator assembly, refrigerant pipes and a fan (not shown in the figure), the refrigerant pipes guiding refrigerant to each cooling loop device, and the fan forcing air circulation to supply the cold air generated at the evaporator assembly to the storage compartment.

[0064] The door 20 can be connected to the housing 10 via a hinge assembly 30. Typically, the hinge assembly 30 is located at the left and / or right end of the housing 10.

[0065] For ease of description, the side of the door 20 closest to the hinge assembly 30 is referred to as the sidewall 21. For example, in the current example, the hinge assembly 30 is located on the right side of the housing 10, so the right side of the door 20 is the sidewall 21, and the left end of the door 20 rotates with its right end as the center of rotation. The front wall 22 and the sidewall 21 of the door 20 intersect to form an angle 23.

[0066] In other embodiments, when the hinge assembly 30 is located on the left side of the housing 10, the left side of the door 20 is the side wall 21, and the right end of the door 20 rotates with its left end as the center of rotation.

[0067] 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.

[0068] When the hinge assembly 30 is a single-axis hinge, the door 20 only rotates around one axis. Normally, when the door 20 is closed, its side wall 21 is flush with the reference plane O. When the door 20 rotates around the single axis, its corner 23 will rotate to the outside of the reference plane O. If the refrigerator is embedded in the cabinet 100, the corner 23 extending too far beyond the reference plane O will cause it to collide and interfere with the cabinet 100, preventing the door 20 from opening properly.

[0069] Therefore, in order for the refrigerator to be embedded in the cabinet, the door 20 needs to be able to move inward during the rotation process, so that the corner 23 of the door 20 does not extend too far beyond the reference plane O during the opening and closing process.

[0070] According to an embodiment of the refrigerator of the present invention, the hinge assembly 30 adopts the form of a dual-axis hinge, and the requirement that the door 20 can move inward when it rotates is met by the combination of the trajectories of the two axes.

[0071] Specifically, refer to Figure 3 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.

[0072] 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 points, 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 invention uses the first groove 50 and the second groove 60 as reference points, and describes the movement of the first shaft 41 and the second shaft 42 relative to these reference points.

[0073] In a first embodiment of the present invention, the first shaft 41 and the second shaft 42 are fixed relative to the housing 10, and the first groove 50 and the second groove 60 are located on the door 20.

[0074] Specifically, the hinge assembly 30 includes a hinge plate 40 fixedly connected to the housing 10. The rear end of the hinge plate 40 can be connected to the housing by screws, and the front end of the hinge plate 40 extends forward beyond the housing 10. The first shaft 41 and the second shaft 42 are disposed at the front end of the hinge plate 40 and extend vertically.

[0075] 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 and should not be construed as limiting the scope of protection of this invention.

[0076] Reference Figure 5 The first groove 50 is approximately located between the front end of the second groove 60 and the side wall 21. In the direction from the inside out, the first groove 50 is a straight groove extending towards the side wall 21, with the extension direction perpendicular to the side wall 21. The second groove 60 includes a first guide groove segment 601 and a second guide groove segment 602. The first guide groove segment 601 extends away from the front wall 22 and away from the side wall 21, while the second guide groove segment 602 extends from the end of the first guide groove segment 601 away from the front wall 22 and closer to the side wall 21. When the door 20 is opened from the closed state to 90°, the second shaft 42 moves within the first guide groove segment 601 and the second guide groove segment 602.

[0077] In other embodiments, the first guide groove segment 601 may also extend in a direction away from the front wall 22 and closer to the side wall 21.

[0078] To accommodate the normal use of the refrigerator (without placing it in the cabinet), i.e., the door 20 can be opened to a greater angle from 90°, the second groove 60 may include a third guide groove section 603, which extends from the end of the second guide groove section 602 toward the front wall 22 and the side wall 21.

[0079] The following describes the structure of the hinge assembly 30 in detail using the opening process of the door 20:

[0080] Phase 1

[0081] Reference Figure 6 The first groove 50 includes a first positioning position 51 and a second positioning position 52, the second positioning position 52 being farther away from the side wall 21 than the first positioning position 51; the second groove 60 includes a first guide position 61 and a second guide position 62, the second guide position 62 being farther away from the front wall 22 and the side wall 21 than the first guide position 61.

[0082] When the door 20 is in the closed state, the first shaft 41 is located at the first positioning position 51, and the second shaft 42 is located at the first guide position 61. The first positioning position 51 is not at the end of the first groove 50, and the first guide position 61 can be located at the front end of the second groove 60.

[0083] When the door 20 is in the first open angle state ( Figure 6 When the state shown is such that the first axis 41 is located in the second positioning position 52 and the second axis 42 is located in the second guide position 62.

[0084] Therefore, when the door 20 is opened from the closed state to the first angle, the first shaft 41 moves from the first positioning position 51 to the second positioning position 52 relative to the first groove 50, and at the same time, the second shaft 42 moves from the first guide position 61 to the second guide position 62 relative to the second groove 60.

[0085] Since the first shaft 41 moves from the first positioning position 51 to the second positioning position 52 in a direction away from the side wall 21 (inward), it is equivalent to the first groove 50 moving outward for the door body 20. Therefore, in the first stage of this embodiment, the door body 20 will move outward when it is first opened.

[0086] Combined with reference Figure 2 Typically, when a refrigerator is placed in a cabinet 100, to prevent uneven ground or cabinet deformation, the cabinet is usually set with a certain gap α between it and the side of the refrigerator (reference plane O), α being approximately 5mm.

[0087] In this embodiment, the distance between the first positioning position 51 and the second positioning position 52 is relatively small, meaning that in the first stage, the door 20 moves slightly outward. Since the corner edge 23 of the door 20 extends very little beyond the reference plane O when the door 20 is first opened, even if the door 20 moves slightly outward, it will not interfere with the cabinet.

[0088] Specifically, when the door 20 is in the first open angle state, the distance β1 of the corner edge 23 beyond the reference plane O is less than α.

[0089] In the current example, the motion trajectory of the second shaft 42 between the first guide position 61 and the second guide position 62 is the first guide trajectory line 612, which is a spline curve extending away from the front wall 22 and away from the side wall 21 (the direction of extension here refers to the direction of shaft movement relative to the groove). In other embodiments, the first guide trajectory line 612 may be a straight line segment.

[0090] It should be noted that the motion trajectory lines shown in the attached figures of this article are referenced to the center of the first axis 41 and the second axis 42.

[0091] In this stage, the door body 20 is set to move slightly outward, and the first guide trajectory line 612 extends in a direction away from the front wall 22 and away from the side wall 21. This can make the transition point between the first guide groove segment 601 and the second guide groove segment 602 relatively smooth (described below) when the curvature of the first guide groove segment 601 and the second guide groove segment 602 changes, thereby improving the smoothness of the door body 20's movement.

[0092] In addition, the extension of the first guide trajectory line 612 away from the front wall 22 and away from the side wall 21 increases the angle between the first guide trajectory line 612 and the motion trajectory line of the first axis 41, ensuring that the door 20 does not shake during the movement.

[0093] Specifically, the angle between the first guide trajectory line 612 and the motion trajectory line of the first axis 41 is greater than 45°.

[0094] In the first stage, the door 20 opens to an initial angle of approximately 7°.

[0095] In other embodiments, the first stage may also set the second positioning position 52 to be closer to the side wall 21 than the first positioning position 51, and the second guide position 62 to be farther away from the front wall 22 and closer to the side wall 21 than the first guide position 51. That is, the first guide trajectory line 612 extends in a direction that is farther away from the front wall 22 and closer to the side wall 21, and the door 20 moves inward a certain distance.

[0096] Phase Two

[0097] Reference Figure 7 The first groove 50 also has a third positioning position 53, which is closer to the side wall 21 than the second positioning position 52 (and the first positioning position 51); the second groove 60 also has a third guide position 63, which is farther away from the front wall 22 and closer to the side wall 21 than the second guide position 62.

[0098] When the door 20 is in the second open angle state ( Figure 7 When in the state shown, the first shaft 41 is located at the third positioning position 53, and the second shaft is located at the third guide position 63. The third positioning position 53 can be located at the end of the first groove 50 near the side wall 21.

[0099] 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 52 to the third positioning position 53 relative to the first groove 50, and at the same time the second shaft 42 moves from the second guide position 62 to the third guide position 63 relative to the second groove 60.

[0100] Since the first axis 41 moves from the second positioning position 52 to the third positioning position 53 in a direction closer to the side wall 21 (outward), it is equivalent to the door body 20 driving the first groove 50 to move inward. Therefore, in the second stage of this embodiment, the door body 20 moves inward a certain distance while rotating, so that the corner edge 23 moves inward relative to the reference plane O, avoiding the collision between the corner edge 23 and the cabinet 100.

[0101] When the door 20 is in the second angle open state, the distance β2 of the corner edge 23 extending beyond the reference plane O is less than α. In other embodiments, the corner edge 23 can also be designed to move to the inside of the reference plane O. This would require the door 20 to move a larger distance inward in the second stage, which would affect the feel and smoothness of opening the door.

[0102] The trajectory line of the second axis 42 between the second guide position 62 and the third guide position 63 is the second guide trajectory line 623. The second guide trajectory line 623 is generally a curved segment extending away from the front wall 22 and closer to the side wall 21. In other embodiments, the second guide trajectory line 623 may also be a straight line.

[0103] In some embodiments of the present invention, the distance by which the door 20 moves laterally by a unit angle in the first stage is μ1, and the distance by which the door 20 moves laterally by a unit angle in the second stage is μ2, where μ1 < μ2. That is to say, the lateral 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 laterally against the front surface of the box 10 due to the large lateral movement distance per unit angle when the door 20 is first opened.

[0104] In addition, if the lateral movement distance of the door body 20 is large when it is first opened, it will affect the feel and smoothness of opening the door. Therefore, the lateral movement distance of the door body 20 can be set to be small when it is first opened.

[0105] Specifically, the slope of the first guide trajectory line 612 can be greater than the slope of the second guide trajectory line 623 (all slopes described herein are absolute values). The larger the slope, the smaller the lateral movement distance of the door per unit angle of rotation.

[0106] The length of the first guide trajectory line 612 is less than that of the second guide trajectory line 623. In this way, the door 20 rotates in the first stage so that the door seal does not contact the cabinet, and a large lateral displacement can occur in the second stage to avoid the cabinet.

[0107] If the door 20 moves laterally inward in both the first and second stages, the curvature of the second axis's motion trajectory line needs to change in the two stages. This may result in a sharp point at the connection between the first guide trajectory line 612 and the second guide trajectory line 623, affecting the feel of opening the door. Therefore, setting the door 20 to move laterally outward in the first stage can make the connection between the first guide trajectory line 612 and the second guide trajectory line slightly smoother.

[0108] In some embodiments of this application, the angle between the second guide trajectory line 623 and the motion trajectory line of the first axis 41 is >45°, which can avoid the problem of shaking when the motion trends of the two axes are close to parallel, and ensure that the door 20 does not shake during the movement.

[0109] In the second stage, the second angle is approximately 45° to 50°.

[0110] Phase Three

[0111] Reference Figure 8 The first groove 50 also has a fourth positioning position 54, which is farther away from the side wall 21 than the third positioning position 53; the second groove 60 also has a fourth guide position 64, which is farther away from the front wall 22 and closer to the side wall 21 than the third guide position 63.

[0112] When door 20 is in the 90° open position ( Figure 8 When in the state shown, the first axis 41 is located at the fourth positioning position 54, and the second axis 42 is located at the fourth guide position 64.

[0113] When the door continues to open from the second angle to the 90° state, the first shaft 41 moves from the third positioning position 53 to the fourth positioning position 54, and the second shaft 42 moves from the third guide position 63 to the fourth guide position 64.

[0114] Since the first shaft 41 moves from the third positioning position 53 to the fourth positioning position 54 in a direction away from the side wall 21 (inward), it is equivalent to the door body 20 driving the first groove 50 to move outward. Therefore, in the third stage, the door body 20 moves outward while rotating and opening.

[0115] In the second stage, the door 20 has passed the danger period of potentially interfering with the cabinet. Therefore, even if the door 20 moves outward during this stage, it will not touch the cabinet. Furthermore, moving outward reduces the obstruction of the storage compartment by the door 20, thereby avoiding any restriction on the drawer extraction within the storage compartment.

[0116] The trajectory line of the second axis 42 between the third guide position 63 and the fourth guide position 64 is the third guide trajectory line 634. The third guide trajectory line 634 is generally a curved segment extending away from the front wall 22 and closer to the side wall 21. In other embodiments, the third guide trajectory line 634 may also be a straight line.

[0117] In some embodiments, when the door 20 is in the 90° open state, the front wall 22 can be flush with the reference plane O, which can minimize the space occupied by the door 20 in front of the storage room, thereby avoiding the impact of the door 20 on the pulling out of drawers and other items in the storage room.

[0118] In other embodiments, when the door 20 is in the 90° open state, the door 20 is located inside the reference plane O as a whole, that is, there is a gap between the front wall 22 of the door 20 and the reference plane O. In this way, even if the door 20 continues to open from 90° to a certain angle, it will not interfere with the cabinet, so that the refrigerator of this application can be opened to >90° when embedded in the cabinet.

[0119] Phase 4

[0120] Reference Figure 9 The first groove 50 also has a fifth positioning position 55, which is farther away from the side wall 21 than the fourth positioning position 54; the second groove 60 also has a fifth guide position 65, which is farther away from the front wall 22 and closer to the side wall 21 than the fourth guide position 64.

[0121] When the door 20 is in the third open position ( Figure 9 When the state shown is such that the first axis 41 is located at the fifth positioning position 55 and the second axis 42 is located at the fifth guiding position 65.

[0122] When the door continues to open from 90° to the third angle, the first axis 41 moves from the fourth positioning position 54 to the fifth positioning position 55, the second axis 42 moves from the fourth guide position 64 to the fifth guide position 65, and the door 20 moves to the upper left.

[0123] The trajectory line of the second axis 42 between the fourth guide position 64 and the fifth guide position 65 is the fourth guide trajectory line 645. The fourth guide trajectory line 645 is generally a curved segment extending away from the front wall 22 and closer to the side wall 21. In other embodiments, the fourth guide trajectory line 645 may also be a straight line.

[0124] In some embodiments of this application, the angle between the fourth guide trajectory line 645 and the motion trajectory line of the first axis 41 is >45°, which can avoid the problem of shaking when the motion of the two axes is close to parallel, and ensure that the door 20 does not shake during the movement.

[0125] The third angle can be the maximum angle that the door 20 can open when the refrigerator is embedded in the cabinet.

[0126] Phase 5

[0127] Reference Figure 10 The first groove 50 also has a sixth positioning position 56, which is farther away from the side wall 21 than the fifth positioning position 55; the second groove 60 also has a sixth guide position 66, which is closer to the front wall 22 and closer to the side wall 21 than the fifth guide position 65.

[0128] When the door 20 is at its maximum opening angle ( Figure 10 In the state shown, the first shaft 41 is located at the sixth positioning position 56, and the second shaft 42 is located at the sixth guiding position 66. The sixth positioning position 56 can be located at the end of the first groove 50 away from the side wall 21, and the sixth guiding position 66 can be located at the end of the second groove 60 near the side wall 21.

[0129] When the door 20 continues to open from the third angle to the maximum angle, the first axis 41 moves from the fifth fixed position 55 to the sixth fixed position 56, the second axis 42 moves from the fifth guide position 65 to the sixth guide position 66, and the door 20 moves to the upper left.

[0130] The trajectory line of the second axis 42 between the fifth guide position 65 and the sixth guide position 66 is the fifth guide trajectory line 656. The fifth guide trajectory line 656 is generally a curved segment extending towards the front wall 22 and the side wall 21. In other embodiments, the fifth guide trajectory line 656 may also be a straight line.

[0131] In some embodiments of this application, the angle between the fifth guide trajectory line 656 and the motion trajectory line of the first axis 41 is >45°, which can avoid the problem of shaking when the motion of the two axes is close to parallel, and ensure that the door 20 does not shake during the movement.

[0132] In the embodiments of this application, the door 20 rotates around a moving point during the opening process, and this moving point is traceable, with a trajectory of (X = (X1 + X2) / 2, Y = (Y1 + Y2) / 2); where X represents the distance of the moving point from the side wall of the door; and Y represents the distance of the moving point from the front wall of the door. The trajectory of this moving point can be calculated using the following formula:

[0133] Reference Figure 11When the door is closed, the distance from the central axis P of the first axis to the front wall of the door is a, the distance from the central axis P of the first axis to the side wall of the door is b, the distance PQ between the central axes of the first axis and the second axis is L, the angle formed by the line connecting PQ and the front wall of the door is n, and the angle formed by the line connecting the rightmost central axis O of the first groove and the corner of the door with the front wall of the door is γ.

[0134] Reference Figure 12 ① When the rotation angle of the door is m, 0≤m≤n:

[0135] The distance from the central axis P of the first axis to the side wall is X1, where X1 = b / COSm;

[0136] The distance from the central axis P of the first axis to the front wall is Y1, where Y1 = a;

[0137] The distance from the central axis Q of the second axis to the side wall is X2, where X2 = b / COSm + L*COS(nm);

[0138] The distance from the central axis Q of the second axis to the front wall is Y2, where Y2 = aL*SIN (nm).

[0139] Reference Figure 13 ② When the rotation angle of the door is m, n≤m≤γ:

[0140] The distance from the central axis P of the first axis to the side wall is X1, where X1 = b * COSm;

[0141] The distance from the central axis P of the first axis to the front wall is Y1, where Y1 = a;

[0142] The distance from the central axis Q of the second axis to the side wall is X2, where X2 = b*COSm + L*COS(mn);

[0143] The distance from the center axis Q of the second axis to the front wall is Y2, where Y2 = a + L*SIN(mn).

[0144] Reference Figure 14 ③ When the rotation angle of the door is m, γ≤m≤90°

[0145] The distance from the central axis P of the first axis to the side wall is X1, where X1 = b*COSγ / COS(m-γ);

[0146] The distance from the central axis P of the first axis to the front wall is Y1, where Y1 = a;

[0147] The distance from the central axis Q of the second axis to the side wall is X2, where X2 = b*COSγ / COS(m-γ) + L*COS(mn);

[0148] The distance from the center axis Q of the second axis to the front wall is Y2, where Y2 = a + L*SIN(mn).

[0149] Reference Figure 15 When the rotation angle of the door is m, and m = 90°,

[0150] The distance from the central axis P of the first axis to the side wall is X1, where X1 = b * tan(m - γ);

[0151] The distance from the central axis P of the first axis to the front wall is Y1, where Y1 = a;

[0152] The distance from the central axis Q of the second axis to the side wall is X2, where X2 = b*tan(m-γ) + L*SINn;

[0153] The distance from the central axis Q of the second axis to the front wall is Y2, where Y2 = a + L*COSn.

[0154] Reference Figure 16 When the rotation angle of the door is m, and 90°≤m,

[0155] The distance from the central axis P of the first axis to the side wall is X1, where X1 = b*tan(m-γ) / cos(m-90°);

[0156] The distance from the central axis P of the first axis to the front wall is Y1, where Y1 = a;

[0157] The distance from the central axis Q of the second axis to the side wall is X2.

[0158] X2=b*tan(m-γ) / cos(m-90°)-L*SIN(mn-90°);

[0159] The distance from the central axis Q of the second axis to the front wall is Y2, where Y2 = a + L * COS(mn - 90°).

[0160] According to some embodiments of the present invention, with reference to Figures 17 to 19 The door body 20 has a receiving groove 24 at the position corresponding to the hinge assembly 30, and the front end of the hinge plate 40 extends into the receiving groove 24.

[0161] The first groove 50 and the second groove 60 on the door body 20 are set on the mounting block 60. The bottom of the receiving groove 24 is provided with a mounting groove, and the mounting block 60 is assembled in the mounting groove. The mounting block 60 can be made of POM material, which has good wear resistance.

[0162] In a second embodiment of the present invention, a slider 410 is provided between the first shaft 41 and the first groove 50. The slider 410 is sleeved on the outside of the first shaft 41 and inserted into the first groove 50 for sliding connection relative to the first groove 50. During the opening and closing of the door 20, the door 20 rotates, causing the first groove 50 and the slider 410 to rotate relative to the first shaft 41. The lateral movement of the door 20 causes the first groove 50 to move relative to the slider 410.

[0163] In this embodiment, a slider 410 is provided between the first shaft 41 and the first groove 50, so that the line contact between the first shaft 41 and the first groove 50 is transformed into a surface contact between the slider 410 and the first groove 50.

[0164] During the opening and closing of the door 20, the cooperation between the first shaft 41 and the first groove 50 mainly plays a positioning role for the door 20. After long-term use, the first shaft 41 and the first groove 50 will inevitably wear. If the first shaft 41 and the first groove 50 are in direct line contact, even slight wear will cause the gap between the first shaft 41 and the first groove 50 to increase, resulting in unstable positioning and causing the door to shake. In this embodiment, the first shaft 41 and the first groove 50 are changed to surface contact through the slider 410, which can increase the relative motion balance between the two and prevent wear during long-term use.

[0165] Specifically, the slider 410 includes a first plane 411 and a second plane 412 that are parallel to each other. The first plane 411 and the second plane 412 are parallel to the extension direction of the first groove 50. When the door 20 moves laterally, the sidewall of the first groove 50 contacts the first plane 411 and the second plane 412.

[0166] The slider 410 can be configured as a square prism, wherein the first plane 411 and the second plane 412 are parallel to the extension direction of the first groove 50. In other embodiments, the cross-section of the slider 410 can be waist-shaped, that is, the first plane 411 and the second plane 412 are connected by an arc surface.

[0167] In a third embodiment of the invention, reference is made to... Figures 20 to 27 The first groove 50 and the second groove 60 can be directly set on the door body 20, that is, the first groove 50 and the second groove 60 are integrally formed with the door body 20, omitting the structure of the mounting block 25.

[0168] In this embodiment, the first groove 50 and the second groove 60 are directly set on the door body 20 without considering reserving installation space for the mounting block 25. This allows the front ends of the first groove 50 and the second groove 60 to be closer to the front wall of the door body 20. The first groove 50 and the second groove 60 are moved forward as a whole on the door body 20, which can reduce the door body thickness space occupied by the groove structure, so that the door body can be made thinner.

[0169] Additionally, refer to Figure 22 The dashed line indicates the position of the double grooves when they are installed on the mounting block, while the solid line indicates the position where the double grooves are moved forward in this embodiment. Because the double grooves are moved forward, the distance from the groove to the corner edge 23 is reduced, and the distance by which the corner edge 23 extends beyond the reference plane when the door rotates will also be correspondingly smaller, i.e., X2 < X1 in the diagram. Thus, in this embodiment, the double groove structure can reduce the risk of the door touching the cabinet; it can also reduce the lateral movement distance of the door, thereby ensuring the smoothness of the door's rotation and opening / closing.

[0170] Reference Figure 23 When the door 20 is opened from the closed state to the first angle, the door 20 drives the first shaft 41 to move from the first positioning position 51 to the second positioning position 52 relative to the first groove 50. At the same time, the second shaft moves from the first guide position 61 to the second guide position 62 relative to the second groove 60. The second positioning position 52 is closer to the side wall 21 than the first positioning position 51, and the second guide position 62 is farther away from the front wall 22 and closer to the side wall 21 than the first guide position 61.

[0171] Since the first shaft 41 moves from the first positioning position 51 to the second positioning position 52 in a direction closer to the side wall 21 (outer side), the door body 20 moves inward while rotating.

[0172] In other embodiments, the setup of this stage can be the same as the first embodiment, that is, the second positioning position 52 is farther away from the side wall 21 than the first positioning position 51, the second guide position 62 is farther away from the front wall 22 and the side wall 21 than the first guide position 61, and the door 20 moves outward while rotating.

[0173] Reference Figure 24 When the door 20 continues to open from the first angle to the second angle, the door 20 drives the first shaft 41 to move from the second positioning position 52 to the third positioning position 53 relative to the first groove 50. At the same time, the second shaft 42 moves from the second guide position 62 to the third guide position 63 relative to the second groove 60. The third positioning position 53 is closer to the side wall 21 than the second positioning position 52, and the third guide position 63 is farther away from the front wall 22 and closer to the side wall 21 than the second guide position 62. The door 20 moves inward while rotating.

[0174] During the process of opening the door 20 from the closed state to the first angle, the distance of lateral movement per unit angle is μ1, and the distance of lateral movement per unit angle during the process of opening the door 20 from the first angle to the second angle is μ2. μ1 < μ2, so that the lateral movement of the door 20 is relatively small when it is first opened, avoiding friction between the door seal and the box body, and affecting the opening feel.

[0175] Specifically, the trajectory line of the second shaft 42 relative to the second groove 60 from the first guide position 61 to the second guide position 62 is the first guide trajectory line 612, and the trajectory line of the second shaft 42 relative to the second groove 60 from the second guide position 62 to the third guide position 63 is the second guide trajectory line 623. The slope of the first guide trajectory line 612 is greater than that of the second guide trajectory line 623, which allows the door body 20 to move a smaller lateral distance.

[0176] Reference Figure 25 When the door 20 continues to open from the second angle to the third angle (in this embodiment, the third angle is less than 90°), the door 20 drives the first shaft 41 to move from the third positioning position 53 to the fourth positioning position 54 relative to the first groove 50. At the same time, the second shaft 42 moves from the third guide position 63 to the fourth guide position 64 relative to the second groove 60. The fourth positioning position 54 is farther away from the side wall 21 than the third positioning position 53, and the fourth guide position 64 is farther away from the front wall 22 and closer to the side wall 21 than the third guide position 63. The door 20 moves outward while rotating.

[0177] Reference Figure 26 When the door 20 continues to open from the third angle to 90°, the door 20 drives the first shaft 41 to move from the fourth positioning position 54 to the fifth positioning position 55 relative to the first groove 50. At the same time, the second shaft 42 moves from the fourth guide position 64 to the fifth guide position 65 relative to the second groove 60. The fifth positioning position 55 is farther away from the side wall 21 than the fourth positioning position 54, and the fifth guide position 65 is closer to the front wall 22 and the side wall 21 than the fourth guide position 64. The door 20 moves outward while rotating.

[0178] Reference Figure 27 When the door 20 continues to open from 90° to the maximum angle, the door 20 drives the first shaft 41 to move from the fifth positioning position 55 to the sixth positioning position 56 relative to the first groove 50. At the same time, the second shaft 42 moves from the fifth guide position 65 to the sixth guide position 66 relative to the second groove 60. The sixth positioning position 55 is farther away from the side wall 21 than the fifth positioning position 54, and the sixth guide position 66 is closer to the front wall 22 and the side wall 21 than the fifth guide position 65.

[0179] In a fourth embodiment of the invention, reference is made to... Figures 28 to 33 The difference from the above embodiments is that the first groove 50 is provided on the hinge plate 40, and the first shaft 41 is provided on the door body 20.

[0180] Since the first groove 50 is on the hinge plate 40 and the second groove 60 is on the door body 20, the first groove 50 and the second groove 60 can intersect on the projection of the top surface of the door body 20, making the double groove structure more compact, so that the door body 20 can be made thinner.

[0181] Specifically, refer to Figure 28 The hinge plate 40 may be provided with a first groove 50 with an opening facing outwards, and the door body 20 may be provided with a vertically extending first shaft 41, which is adapted to the first groove 50. One end of the first groove 50 is open to facilitate the installation of the hinge assembly. In other embodiments, both ends of the first groove 50 may be closed.

[0182] Reference Figure 29 When the door 20 is opened from the closed state to the first angle, the door 20 drives the first shaft 41 to move from the first positioning position 51 to the second positioning position 52 relative to the first groove 50. At the same time, the second shaft moves from the first guide position 61 to the second guide position 62 relative to the second groove 60. The second positioning position 52 is farther away from the reference plane O than the first positioning position 51, and the second guide position 62 is farther away from the front wall 22 and closer to the side wall 21 than the first guide position 61.

[0183] Since the first axis 41 moves from the first positioning position 51 to the second positioning position 52 in a direction away from the reference plane O (inward), the door body 20 moves inward while rotating.

[0184] In other embodiments, the setup of this stage can be the same as the first embodiment, that is, the second positioning position 52 is closer to the reference plane O than the first positioning position 51, the second guide position 62 is farther away from the front wall 22 and the side wall 21 than the first guide position 61, and the door 20 moves outward while rotating.

[0185] Reference Figure 30 When the door 20 continues to open from the first angle to the second angle, the door 20 drives the first shaft 41 to move from the second positioning position 52 to the third positioning position 53 relative to the first groove 50. At the same time, the second shaft 42 moves from the second guide position 62 to the third guide position 63 relative to the second groove 60. The third positioning position 53 is farther away from the reference plane O than the second positioning position 52, and the third guide position 63 is farther away from the front wall 22 and closer to the side wall 21 than the second guide position 62. The door 20 moves inward while rotating.

[0186] Reference Figure 31 When the door 20 continues to open from the second angle to 90°, the door 20 drives the first shaft 41 to move from the third positioning position 53 to the fourth positioning position 54 relative to the first groove 50. At the same time, the second shaft 42 moves from the third guide position 63 to the fourth guide position 64 relative to the second groove 60. The fourth positioning position 54 is closer to the reference plane O than the third positioning position 53, and the fourth guide position 64 is farther away from the front wall 22 and closer to the side wall 21 than the third guide position 63. The door 20 moves outward while rotating.

[0187] Reference Figure 32When the door 20 continues to open from 90° to the third angle, the door 20 drives the first shaft 41 to move from the fourth positioning position 54 to the fifth positioning position 55 relative to the first groove 50. At the same time, the second shaft 42 moves from the fourth guide position 64 to the fifth guide position 65 relative to the second groove 60. The fifth positioning position 55 is closer to the reference plane O than the fourth positioning position 54, and the fifth guide position 65 is farther away from the front wall 22 and closer to the side wall 21 than the fourth guide position 64.

[0188] Reference Figure 33 When the door 20 continues to open from the third angle to the maximum angle, the door 20 drives the first shaft 41 to move from the fifth positioning position 55 to the sixth positioning position 56 relative to the first groove 50. At the same time, the second shaft 42 moves from the fifth guide position 65 to the sixth guide position 66 relative to the second groove 60. The sixth positioning position 55 is farther away from the reference plane O than the fifth positioning position 54, and the sixth guide position 66 is closer to the front wall 22 and the side wall 21 than the fifth guide position 65.

[0189] During the above movement, since the first groove 50 is located on the hinge plate 40, its position remains unchanged, so the movement trend of the first shaft 51 is always horizontal, while the movement trend of the second shaft 52 relative to the second groove 60 generally has a vertical component. In this way, the angle between the movement trajectory of the first shaft 51 in the first groove 50 and the movement trajectory of the second shaft 52 in the second groove 60 is increased, ensuring that the door 20 does not shake during the opening and closing process.

[0190] For example, refer to Figure 8 The trajectory of the first axis 41 tends to be vertical, and the angle between it and the third guide trajectory line 634 of the second axis 42 is zero. Figure 31 The angle between the two trajectory lines is large.

[0191] Therefore, in the current embodiment, the movement of the door 20 is more stable.

[0192] In the embodiments of this application, the door 20 rotates around a moving point during the opening process, and this moving point is traceable, with a trajectory of (X = (X1 + X2) / 2, Y = (Y1 + Y2) / 2); where X represents the distance of the moving point from the side wall of the door; and Y represents the distance of the moving point from the front wall of the door. The trajectory of this moving point can be calculated using the following formula:

[0193] Reference Figure 34 When the door is closed, the distance from the central axis P of the first axis to the front wall of the door is a, the distance from the central axis P of the first axis to the side wall of the door is b, the distance PQ between the central axes of the first axis and the second axis is L, and the angle formed by the line connecting the central axes PQ of the first axis and the second axis and the front wall of the door is n.

[0194] Reference Figure 35 ① When the rotation angle of the door is m, 0≤m≤n:

[0195] The distance from the central axis P of the first axis to the side wall is X1, where X1 = b;

[0196] The distance from the central axis P of the first axis to the front wall is Y1, where Y1 = a;

[0197] The distance from the central axis Q of the second axis to the side wall is X2, where X2 = b + L * COS(nm);

[0198] The distance from the central axis Q of the second axis to the front wall is Y2, where Y2 = aL*SIN (nm).

[0199] Reference Figure 36 ② When the rotation angle of the door is m, n≤m≤90°+n:

[0200] The distance from the central axis P of the first axis to the side wall is X1, where X1 = b;

[0201] The distance from the central axis P of the first axis to the front wall is Y1, where Y1 = a;

[0202] The distance from the central axis Q of the second axis to the side wall is X2, where X2 = b + L*COS(mn);

[0203] The distance from the center axis Q of the second axis to the front wall is Y2, where Y2 = aL*SIN(mn).

[0204] Reference Figure 37 ③ When the rotation angle of the door is m, 90°+n≤m

[0205] The distance from the central axis P of the first axis to the side wall is X1, where X1 = b;

[0206] The distance from the central axis P of the first axis to the front wall is Y1, where Y1 = a;

[0207] The distance from the central axis Q of the second axis to the side wall is X2, where X2 = bL*COS(180°-m+n);

[0208] The distance from the center axis Q of the second axis to the front wall is Y2, where Y2 = a + L * SIN(180° - m + n).

[0209] In the aforementioned hinge assembly 30, the first groove 50 is a horizontal groove extending perpendicularly to the side wall 21 when the door is closed. This means the horizontal groove occupies less space in the front-to-back direction of the door 20, allowing for a more compact track groove and a thinner door 20. If the door 20 is thicker, its inner side will occupy more space in front of the storage compartment when opened to 90°, affecting the extraction of drawers and other items inside the storage compartment. Therefore, the horizontal groove design described in this application reduces the thickness of the 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.

[0210] The horizontal groove design of the first groove 50 in this application allows it to be closer to the front wall 22 of the door 20; and the first shaft 41 moves back and forth within the first groove 50, thus allowing the first groove 50 to be relatively short. Therefore, the distance by which the corner edge 23 of the trajectory groove structure in this application extends beyond the reference plane O when the door 20 rotates is smaller compared to when the first groove is an inclined groove in related technologies. Figure 38 Since X < Y), the distance that the door 20 of this application needs to move inward is relatively small.

[0211] 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.

[0212] 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.

[0213] In the relevant technology, the door 20 has a stationary rotational motion around the first axis during the opening process. Before or after the door rotates 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.

[0214] 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.

[0215] 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.

[0216] 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 in that, include: Box; The door is rotatably connected to the housing via a hinge assembly to open or close the housing. The side of the door closest to the hinge assembly is the side wall, and the front surface of the door is the front wall. The plane on the side of the housing near the hinge assembly is defined as the reference plane. The housing is divided into an inner side and an outer side by the reference plane. The housing is located on the inner side. The hinge assembly includes a first shaft and a first groove that cooperate with each other, and a second shaft and a second groove that cooperate with each other, so that the door has an inward movement phase during the opening to a third angle; wherein the third angle is ≥90°; The first groove is a straight groove and its extension direction is perpendicular to the side wall when the door is in the closed state; When the door is opened from the closed state to the first angle, the first shaft moves from the first positioning position to the second positioning position relative to the first groove, and the second shaft moves from the first guide position to the second guide position relative to the second groove; the second guide position is farther away from the front wall and the side wall than the first guide position, so that the door moves a distance to the outside, or the second guide position is farther away from the front wall and closer to the side wall than the first guide position, so that the door moves a distance to the inside; When the door is opened from the first angle to the second angle, the second angle is less than 90°. The first shaft moves from the second positioning position to the third positioning position, and the second shaft moves from the second guide position to the third guide position. The third guide position is farther away from the front wall and closer to the side wall than the second guide position, so that the door moves inward a certain distance. The lateral movement distance of the door body by a unit angle between the closed state and the first angle is μ1, and the lateral movement distance of the door body by a unit angle between the first angle and the second angle is μ2, where μ1 < μ2. As the door continues to open from the second angle to the third angle, the first shaft moves from the third positioning position to the fifth positioning position relative to the first groove, and the second shaft moves from the third guide position to the fifth guide position relative to the second groove. The fifth guide position is farther away from the front wall and closer to the side wall than the third guide position, and the door moves a certain distance to the outside. The first groove has a sixth positioning position, which is farther from the side wall than the fifth positioning position when the first groove is provided on the door body, and farther from the reference plane than the fifth positioning position when the first shaft is provided on the door body; When the first axis moves from the fifth positioning position to the sixth positioning position, the door continues to open from the third angle to the maximum angle.

2. The refrigerator according to claim 1, characterized in that, When the door is in the closed state, the first groove is located between the front end of the second groove and the side wall; The second groove has a sixth guide position that is closer to the front wall and the side wall than the fifth guide position; during the process of the door opening from the third angle to the maximum angle, the second shaft moves from the fifth guide position to the sixth guide position.

3. The refrigerator according to claim 2, characterized in that, When the first groove and the second groove are provided on the door body, the second positioning position is farther away from the side wall than the first positioning position. When the first shaft and the second groove are provided on the door body, the second positioning position is closer to the reference plane than the first positioning position.

4. The refrigerator according to claim 2, characterized in that, When the first groove and the second groove are provided on the door body, the second positioning position is closer to the side wall than the first positioning position. When the first shaft and the second groove are provided on the door body, the second positioning position is farther away from the reference plane than the first positioning position.

5. The refrigerator according to claim 3 or 4, characterized in that, When the first groove and the second groove are provided on the door body, the third positioning position is closer to the side wall than the second positioning position. When the first shaft and the second groove are provided on the door body, the third positioning position is farther away from the reference plane than the second positioning position.

6. The refrigerator according to claim 5, characterized in that, When the first groove and the second groove are provided on the door body, the fifth positioning position is farther away from the side wall than the third positioning position; when the first shaft and the second groove are provided on the door body, the fifth positioning position is closer to the reference plane than the third positioning position.

7. The refrigerator according to claim 1, characterized in that, When the door is opened to 90°, the front wall is flush with the reference plane, or the front wall is located inside the reference plane.

8. The refrigerator according to claim 1, characterized in that, The angle between the trajectory of the second axis in the second groove and the trajectory of the first axis in the first groove is greater than 45°.

Images