Refrigerator

Abstract

The application provides a refrigerator, which comprises a box body, a door body, a hinge assembly; the hinge assembly comprises a guide groove and a guide groove on the door body, a first shaft and a second shaft fixed on the box body, a limiting recess arranged on the first shaft or the second shaft, and an elastic plunger arranged on the guide groove or the guide groove; during the opening of the door body, the first shaft moves relative to the guide groove; the second shaft moves relative to the guide groove; when the elastic plunger is clamped into the limiting recess, the door body is stopped; in the application, the elastic plunger is in the action state of the self structure under the non-stop state of the door body, and the elastic plunger is not subjected to other forces, so as to not be subjected to the friction force; only in the process that the elastic plunger is matched with the limiting recess and the shaft is contacted with the elastic plunger in the stop state and before and after the stop state, the elastic plunger is subjected to the friction force, the range of the elastic plunger subjected to the friction force in the opening and closing process of the door body is significantly shortened, and the abrasion under the non-stop state is completely avoided.

Description

Technical Field

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

[0002] The door of the refrigerator is connected to the refrigerator body by a hinge, which allows the refrigerator door to rotate, thus opening and closing the refrigerator body. After the refrigerator door is opened, it will automatically close due to the shift of its center of gravity and cannot stay open. Therefore, when using the refrigerator, people need to hold the door with one hand and take out food with the other, which causes a lot of inconvenience. The existing rotating stop mechanism achieves the rotating stop by cooperating between the end of the ball-shaped elastic plunger and the limiting recess.

[0003] In the stopped state, the limiting plunger is acted upon by the limiting recess, and friction is generated when the limiting plunger and the limiting recess move relative to each other. In the open state, however, the limiting plunger is acted upon by the track groove throughout the entire opening process, resulting in frictional damage. In other words, in the existing stopping mechanism, the limiting plunger is subjected to frictional forces throughout the entire opening process, causing severe wear on both the limiting plunger and the track groove, significantly shortening the service life of the components. 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 that reduces wear on the stop mechanism and ensures the effectiveness of the stop mechanism.

[0006] The refrigerator according to this application includes:

[0007] The housing has a first body sidewall and a second body sidewall that are disposed opposite to each other;

[0008] The door has a front wall that is away from the box when the door is closed, and a side wall that is connected to the front wall and close to the side wall of the first body;

[0009] A hinge assembly connecting the door and the housing to allow the door to rotate relative to the housing; the hinge assembly includes:

[0010] The guide groove and the guide channel are located at the end of the door body near the side wall of the first body;

[0011] A first shaft and a second shaft are fixed to the housing; the first shaft mates with the guide groove, and the second shaft mates with the guide groove.

[0012] An elastic plunger is disposed on at least one of the guide groove and the guide channel;

[0013] A limiting recess is provided at the end of a first shaft or a second shaft corresponding to a guide groove or guide groove with an elastic plunger;

[0014] During the opening of the door, the first shaft moves relative to the guide groove; the second shaft moves relative to the guide groove.

[0015] When the elastic plunger is engaged in the limiting recess, the door stops rotating.

[0016] In some embodiments of this application, the elastic plunger includes a support member, an elastic member, and a limiting protrusion;

[0017] The support member is provided with a receiving cavity with one end open, and the limiting protrusion is located at the opening end of the receiving cavity;

[0018] One end of the elastic element is connected to the bottom of the receiving cavity, and the other end is connected to the limiting protrusion.

[0019] When the elastic plunger is opposite to the limiting recess, the limiting protrusion is ejected by the elastic element and locked into the limiting recess.

[0020] In some embodiments of this application, the limiting protrusion has a limiting post and a limiting body; the limiting post is at least partially housed within the receiving cavity and is located on the side of the elastic member near the opening of the receiving cavity, and the limiting body is located at the end of the limiting post away from the elastic member.

[0021] In some embodiments of this application, a first limiting portion is formed on the inner wall of the receiving cavity of the support member near its opening end;

[0022] A second limiting portion is formed on the outer peripheral wall of the end of the limiting post away from the limiting body;

[0023] The second limiting part is located inside the receiving cavity and is restricted by the first limiting part to the side of the first limiting part near the elastic member;

[0024] When the elastic plunger is misaligned with the limiting recess, the first limiting portion and the second limiting portion cooperate.

[0025] When the elastic plunger is engaged in the limiting recess, the elastic element is compressed, and the first limiting portion and the second limiting portion separate.

[0026] In some embodiments of this application, when the limiting protrusion is inserted into the limiting recess, the distance between the end face of the limiting post near the elastic member and the open end face of the support member is denoted as T1; the total length of the limiting protrusion is denoted as T0.

[0027] Where T1:T0 ∈ [0.4, 0.6] for any value.

[0028] In some embodiments of this application, the limiting body is in the form of a spherical cap.

[0029] In some embodiments of this application, the radius of the limiting body of the spherical cap is denoted as R; where R: T0∈[0.25, 0.4] any value.

[0030] In some embodiments of this application, a track block is installed on the door body, and the track block has a guide groove and a guide slot.

[0031] The door body is provided with a first receiving part and a second receiving part at the end near the hinge plate. The guide groove is installed in the first receiving part and the guide groove is installed in the second receiving part.

[0032] The bottom wall of the first or second accommodating part is provided with a receiving cavity recessed to the side away from the first or second axis; the support member is installed in the receiving cavity, and the elastic protrusion extends into the guide groove installed in the first accommodating part or the guide groove installed in the second accommodating part.

[0033] In some embodiments of this application, a mating member is formed on the outer wall of the open end of the support member. When the support member is installed in the receiving part, the fixing plate is clamped between the bottom of the guide groove or guide channel and the bottom wall of the first receiving part or the second receiving part.

[0034] In some embodiments of this application, a recess is formed on the bottom of the guide groove near the side of the second receiving portion or on the second receiving portion surrounding the opening end of the receiving cavity; the mating member is installed in the recess;

[0035] A recess is formed on the bottom of the guide groove near the first receiving portion or on the first receiving portion surrounding the opening end of the receiving cavity; the mating component is installed in the recess.

[0036] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0037] This invention proposes a refrigerator comprising a cabinet, a door, and a hinge assembly. The hinge assembly includes a guide groove and a guide groove on the door, a first shaft and a second shaft fixed to the cabinet, a limiting recess on the first shaft or the second shaft, and an elastic plunger on the guide groove or the guide groove. During the opening of the door, the first shaft moves relative to the guide groove; the second shaft moves relative to the guide groove; when the elastic plunger engages in the limiting recess, the door stops rotating. The design of this invention ensures that when the door is not stopped, the elastic plunger operates within its own structural state, and is not subject to other forces, thus avoiding friction. Friction only occurs when the door is stopped and before / after the stop state, during which the elastic plunger engages with the limiting recess and when the shaft contacts the elastic plunger. This significantly shortens the range of friction experienced by the elastic plunger during the opening and closing of the door, completely avoiding wear during the non-stop state. Attached Figure Description

[0038] 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.

[0039] Figure 1 This is a perspective view of the refrigerator of the present invention;

[0040] Figure 2 This is a top view of the refrigerator of the present invention;

[0041] Figure 3 This is a partial structural diagram of the refrigerator near the hinge area of ​​the present invention;

[0042] Figure 4 This is a view of the hinge when the door is in the closed state in Embodiment 1 of the refrigerator of the present invention;

[0043] Figure 5 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0044] Figure 6 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0045] Figure 7 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0046] Figure 8 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0047] Figure 9 This is a schematic diagram showing the positions of the first axis relative to the guide portion and the second axis relative to the guide portion when the door is opened to different angles in Embodiment 1 of the refrigerator of the present invention;

[0048] Figure 10 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first axis relative to the guide part and the second axis relative to the guide part;

[0049] Figure 11 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first axis relative to the guide part and the second axis relative to the guide part;

[0050] Figure 12 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first axis relative to the guide part and the second axis relative to the guide part;

[0051] Figure 13 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first axis relative to the guide part and the second axis relative to the guide part;

[0052] Figure 14 This is a schematic diagram showing the movement of the first axis relative to the guide part and the second axis relative to the guide part during the process of the door opening from G0 to G2 in Embodiment 1 of the refrigerator of the present invention;

[0053] Figure 15 This is a schematic diagram showing the movement of the first axis relative to the guide part and the second axis relative to the guide part during the process of the door opening from G2 to G4 in Embodiment 1 of the refrigerator of the present invention;

[0054] Figure 16 This is a schematic diagram of another trajectory form in the refrigerator embodiment of the present invention;

[0055] Figure 17 This is an exploded structural diagram of the door, wear-resistant block, and track block in Embodiments 2 and 3 of the refrigerator of the present invention;

[0056] Figure 18 This is a schematic diagram of the cooperative structure of the door-stopping mechanism, track block, and hinge when the refrigerator door is opened to 90° in Embodiments 2 and 3 of the present invention;

[0057] Figure 19 This is an exploded structural diagram of the wear-resistant block and track block in Embodiments 2 and 3 of the refrigerator of the present invention;

[0058] Figure 20 This is an exploded structural diagram of the hinge and elastic plunger in Embodiments 2 and 3 of the refrigerator of the present invention;

[0059] Figure 21 This is an exploded structural diagram of the track block, hinge, and elastic plunger located on the hinge in Embodiment 4 of the refrigerator of the present invention.

[0060] Figure 22 This is a cross-sectional view of the refrigerator in Embodiment 4 of the present invention when the door is opened to the stop angle;

[0061] Figure 23 This is another cross-sectional view of the refrigerator in Embodiment 4 of the present invention when the door is opened to the stop angle;

[0062] Figure 24 This is an exploded structural diagram of the hinge and elastic plunger in Embodiment 4 of the refrigerator of the present invention;

[0063] Figure 25 This is an exploded structural diagram of the hinge and elastic plunger components in Embodiment 4 of the refrigerator of the present invention;

[0064] Figure 26 This is an exploded structural diagram of the hinge, elastic plunger, track block, and wear-resistant block in Embodiment 5 of the refrigerator of the present invention;

[0065] Figure 27 This is a schematic diagram showing the relative positions of the track block and the wear-resistant block in Embodiment 5 of the refrigerator of the present invention;

[0066] Figure 28 This is a cross-sectional view of the refrigerator in Embodiment 5 of the present invention when the door is opened to the stop angle;

[0067] Figure 29 This is an exploded structural diagram of the door, elastic plunger, and track block in Embodiment Six of the refrigerator of the present invention;

[0068] Figure 30 This is an exploded structural diagram of the hinge, elastic plunger, and track block in Embodiment Six of the refrigerator of the present invention;

[0069] Figure 31 This is an exploded structural diagram of the hinge, elastic plunger components, and track block in the refrigerator of Embodiment Six of the present invention from another perspective;

[0070] Figure 32 This is an exploded structural diagram of the door, various components of the elastic plunger, the track block, and the hinge in Embodiment Six of the refrigerator of the present invention;

[0071] Figure 33 This is an exploded structural diagram of the door, elastic plunger, track block, and hinge in Embodiment Six of the refrigerator of the present invention;

[0072] Figure 34 This is a schematic diagram showing the relative positions of the door, elastic plunger, track block, and hinge in Embodiment Six of the refrigerator of the present invention.

[0073] In the above figures: Box body 10; Cabinet 100; Door 30; Front wall of door 31; Side wall of door 32; Rear wall of door 33; Outer edge W; Inner edge N; First accommodating part 34; Second accommodating part 35; Receiving cavity 36;

[0074] Hinge plate 40; connecting part 401; extension part 402; first shaft 41; second shaft 42; receiving part 421; recessed part 5;

[0075] Guide center axis P; Guide center axis Q;

[0076] Guide section 50; guide trajectory line S; initial guide position P0; first guide position P1; second guide position P2; third guide position P3; fourth guide position P4;

[0077] Guide section 60; guide trajectory line K; starting guide position Q0; first guide position Q1; second guide position Q2; third guide position Q3; fourth guide position Q4;

[0078] Track block 2; Plate 20;

[0079] Limiting recess 6;

[0080] 7. Elastic plunger; 70. Support member; 701. Receiving cavity; 702. Mating member; 703. First limiting part; 71. Elastic member; 72. Limiting protrusion;

[0081] Mounting hole 601;

[0082] Track block 2; Plate 20;

[0083] Wear-resistant block 8; Wear-resistant column 81; Fixing plate 82; Wear-resistant groove 83;

[0084] Limiting post 721; limiting body 722; second limiting part 7211. Detailed Implementation

[0085] 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.

[0086] 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.

[0087] The terms "first," "second," "third," "fourth," and "fifth" 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," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of that feature.

[0088] 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.

[0089] 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.

[0090] Example 1

[0091] Reference Figure 1 The refrigerator includes a cabinet 10 having a storage compartment, a door 30 connected to the cabinet 10 for opening and closing the storage compartment, and a refrigeration unit for supplying cold air to the storage compartment. The cabinet 10 includes an inner liner defining the storage compartment, an outer shell connected to the outside of the inner liner to form the appearance of the refrigerator, and an insulation layer disposed between the inner liner and the outer shell to insulate the storage compartment.

[0092] The cabinet 10 defines multiple storage compartments. In this embodiment, the multiple storage compartments include a refrigerator compartment and a freezer compartment located below the refrigerator compartment; it should be noted that the arrangement of multiple storage compartments in the refrigerator is not limited to the example described above.

[0093] The front end of the storage compartment has an access opening for placing food into or retrieving food from the storage compartment; the cabinet 10 is provided with a rotatable door 30 to open or close the access opening of the storage compartment. Specifically, the door 30 is rotatably connected to the cabinet 10 via upper and lower hinge assemblies.

[0094] The hinge assembly includes a first hinge member and a second hinge member, which cooperate with each other and are capable of relative rotation. In this embodiment, the housing 10 includes a first side wall and a second side wall (i.e., the left side wall and the right side wall of the housing 10) disposed opposite to each other; the first hinge member is disposed on the housing 10 and close to one of the side walls; in this embodiment, the first hinge member being close to the first side wall is used as an example for explanation; the second hinge member is disposed at the end of the door 30 close to the first hinge member, and the first hinge member cooperates with the second hinge member to allow the housing 10 and the door 30 to rotate relative to each other. The door 30 has a front wall 31 that is away from the housing 10 when the door 30 is closed, a rear wall 33 that is disposed opposite to the front wall 31, and a side wall 32 that is close to the first hinge member and connected to the front wall 31. For example, when the first hinge is located on the right side of the housing 10, the right side of the door 30 is the door side wall 32 when the door 30 is closed; when the first hinge is located on the left side of the housing 10, the left side of the door 30 is the door side wall 32 when the door 30 is closed.

[0095] The front wall 31 and side wall 32 of the door 30 intersect to form an outer edge W, and the side wall 32 intersects with the rear wall 33 to form an inner edge N. When the door 30 is closed, the outer edge W is located on the side of the inner edge N away from the housing 10. It should be noted that when both the front wall 31 and the side wall 32 are planes, the intersection line of the two planes is the theoretical outer edge W (similarly, the theoretical inner edge N is the intersection line of the two planes of the side wall 32 and the rear wall 33); in actual production and processing, the intersection of the front wall 31 and the side wall 32 is rounded, thus forming a curved surface at the intersection of the front wall 31 and the side wall 32. In this application, for ease of description, the theoretical outer edge W and the theoretical inner edge N are used for description.

[0096] Reference Figures 2 to 3 The first hinge member includes a hinge plate 40; specifically, the hinge plate 40 includes a connecting portion 401 connected to the housing 10 and an extension portion 402 extending forward from the connecting portion 401 and in a horizontal plate shape. The connecting portion 401 can be fastened to the top wall of the housing 10 by fasteners such as screws, pins, and bolts. Specifically, for the hinge at the upper end of the door 30, the connecting portion 401 is connected to the top wall of the housing 10. For the hinge at the lower end of the door 30, the connecting portion 401 is connected to the front end face of the housing 10. A first shaft 41 and a second shaft 42 are formed on the extension portion 402 of the first hinge member; wherein the second shaft 42 is located on the side of the first shaft 41 away from the first body sidewall.

[0097] The second hinge component includes a guide portion 50 and a guide portion 60 located on the door body 30 near the end of the first hinge component; wherein, the first shaft 41 is adapted to the guide portion 50 and the second shaft 42 is adapted to the guide portion 60. During the process of the door body 30 rotating to open or close, the first shaft 41 moves relative to the guide portion 50 and the second shaft 42 moves relative to the guide portion 60.

[0098] As described above, the first shaft 41 and the second shaft 42 are connected to the hinge plate 40 to form limiting shafts that guide the movement of the door body 30. Specifically, the first shaft 41 and the second shaft 42 provided on the hinge plate 40 extend vertically to fit the guide portion 50 or guide portion 60 provided on the door body 30 near the hinge end. Correspondingly, the guide portion 50 and guide portion 60 are provided at the end of the door body 30 to form trajectory guides that cooperate with the limiting shafts.

[0099] In this embodiment, the description is based on the example of hinge plates 40 located at both the upper and lower ends of the door body 30 being provided with a first shaft 41 and a second shaft 42, and guide portions 50 and guide portions 60 located at both the upper and lower ends of the door body 30. It should be noted that the arrangement in this embodiment is not limited to being provided at both the upper and lower ends of the door body 30 simultaneously; it is arranged as needed to connect the door body 30 and the housing 10.

[0100] In this embodiment, we continue to refer to... Figure 2 The plane containing the side of the cabinet 10 closest to the hinge plate 40 (the first body sidewall) is defined as the reference plane M0. The refrigerator is housed in the cabinet 100. The side of the reference plane M0 closest to the cabinet 100 is the outer side, and the opposite side closest to the storage compartment is the inner side. When the door 30 is closed, the front wall 31 of the door is flush with the front face of the cabinet 100 ("flush" includes any case where the distance between the two planes is less than 2mm). When the refrigerator is placed in the cabinet 100 for use, to prevent uneven ground and deformation of the cabinet 100, the distance α between the cabinet 100 and the side of the refrigerator (the first body sidewall, i.e., the reference plane M0) can be set to α≤5mm. To ensure the refrigerator door 30 opens normally, the outer edge W of the door 30 should not extend too far beyond the side of the cabinet 10 (reference plane M0) during rotation, to avoid the outer edge W colliding with the cabinet 100 and preventing the door 30 from opening properly.

[0101] To meet the above requirements, the door 30 needs to be able to move inward during rotation, so that the outer edge W does not extend too far beyond the side of the housing 10 (reference plane M0). Taking the hinge plate 40 located on the right side of the door 30 as an example, the inside is the left side, meaning the door 30 needs to be able to move to the left; taking the hinge plate 40 located on the left side of the door 30 as an example, the inside is the right side, meaning the door 30 needs to be able to move to the right. In this embodiment, the right side wall of the housing 10 is the first body side wall, described using the reference plane M0.

[0102] like Figure 3 As shown, in this embodiment, the trajectory line of the relative motion of the central axis of the first shaft 41 guided by the guide part 50 is denoted as the guide trajectory line S, and the trajectory line of the relative motion of the central axis of the second shaft 42 guided by the guide part 60 is denoted as the guide trajectory line K.

[0103] In this embodiment, the guide part 50 is configured as a guide groove, and the guide part 60 is configured as a guide groove; the trajectory line of the guide groove guiding the central axis of the first shaft 41 to move is the guide trajectory line S, and the trajectory line of the guide part guiding the central axis of the second shaft 42 to move is the guide trajectory line K.

[0104] In this embodiment, as Figure 3 As shown, within the projection of the plane containing the top wall of the housing 10, the reference plane M0 is taken as the Y-axis, and the straight line located on the front side of the hinge plate 40 and perpendicular to the reference plane M0 is denoted as the X-axis (in this embodiment, the plane passing through the outer edge W and parallel to the loading and unloading opening when the door 30 is closed is taken as the X-axis, that is, the plane containing the front wall 31 of the door when the door 30 is closed is taken as the X-axis); the X-axis is perpendicular to the Y-axis and intersects at the origin O; the direction from the front wall 31 of the door when the door 30 is closed to the housing 10 is taken as the positive direction of the Y-axis, and the direction from the first side wall to the second side wall is taken as the positive direction of the X-axis, forming a two-dimensional coordinate system XOY.

[0105] In one feasible manner, the guide trajectory line S includes a first guide segment S1 and a second guide segment S2; the guide trajectory line K includes a first guide segment K1, a second guide segment K2, a third guide segment K3, a fourth guide segment K4, and a fifth guide segment K5 connected in sequence.

[0106] In the coordinate system XOY, the function corresponding to the guiding trajectory line S is denoted as Y = S(X); Y = S(X) is a piecewise function, and this piecewise function is continuous; therefore, at each segment point, its left limit and right limit are equal; specifically,

[0107]

[0108] Among them, X S2 >X S1 >X S0 >0; S1(X S1 )=S2(X S1 That is, Y = S(X) is a continuous function;

[0109] Y = S1(X) is a function of the first guiding segment S1 in the coordinate system XOY;

[0110] Y = S2(X) is a function of the second guiding segment S2 in the coordinate system XOY.

[0111] As a configurable method, Y = S1(X) and Y = S2(X) are both smooth curves, and when X = X S1 When , the left derivative of Y = S(X) is equal to the right derivative; that is, S`1(X) S1 )=S`2(X S1 ), in X = X S1At this point, Y=S1(X) and Y=S2(X) are smoothly connected; the guiding trajectory line Y=S(X) is a smooth curve (including straight lines) with no sharp points.

[0112] Among them, the slope of the first guide segment S1 is denoted as S`1, the slope of the second guide segment S2 is denoted as S`2, S`2>0, S`1>0; as an optional setting, S`2>S`1>0; as can be seen from the above, along the end of the door body 30 away from the door side wall 32, the guide trajectory line S extends in a direction away from the door side wall 32 and the front wall 31.

[0113] As a configurable method, S`1 is a constant, meaning Y = S1(X) is a linear, monotonically increasing function; as X increases, S2 gradually increases. Alternatively, S`2 < 0, meaning Y = S2(X) is a concave function and a monotonically increasing function. Under these constraints, the guide trajectory line S, pointing from the door sidewall 32 to the end of the door body 30 away from the door sidewall 32, first extends along a straight line, then extends along a concave curve towards the front door wall 31.

[0114] In some embodiments of this application, Y = S2(X) is set as the equation of a circular arc. Correspondingly, when Y = S1(X) is a straight line, the straight line is tangent to the circular arc.

[0115] In the XOY coordinate system Guide trajectory line K The corresponding function is denoted as Y = K(X); Y = K(X) is a piecewise function, and this piecewise function is a continuous function; therefore, at each point of division, its left-hand limit is equal to its right-hand limit; specifically,

[0116]

[0117] Among them, X K0 >X K1 >X K2 >X K3 >X K4 >X K5 >0; K1(X K1 )=K2(X K1 ), K2(X K2 )=K3(X K2 ), K3(X K3 )=K4(X K3 ), K4(X K4 )=K5(X K4 That is, Y = K(X) is a continuous function;

[0118] Y = K1(X) is a function of the first guide segment K1 in the coordinate system XOY;

[0119] Y = K2(X) is a function of the second guide segment K2 in the coordinate system XOY;

[0120] Y = K3(X) is a function of the third guide segment K3 in the coordinate system XOY;

[0121] Y = K4(X) is a function of the fourth guide segment K4 in the coordinate system XOY;

[0122] Y = K5(X) is a function of the fifth guide segment K5 in the coordinate system XOY.

[0123] The slope of the first guide segment is denoted as K`1, the slope of the second guide segment as K`2, the slope of the third guide segment as K`3, the slope of the fourth guide segment as K`4, and the slope of the fifth guide segment as K`5; where K`5 > 0, and K, 1, K`2, K`3, and K`4 are all less than 0; that is, as X increases, Y = K(X) first increases and then decreases. Specifically, K`2 > K`3 > K`1 can be set.

[0124] As a configurable method, Y = K1(X), Y = K2(X), Y = K3(X), Y = K4(X), and Y = K5(X) are all smooth curves (including straight lines).

[0125] Furthermore, in X = X K1 X = X K2 X = X K3 X = X K4 When the left-hand derivative of Y = K(X) is equal to the right-hand derivative, that is, there exists K`1(X) K1 )=K`2(X K1 ), K`2(X K2 )=K`3(X K2 ), K`3(X K3 )=K`4(X K3 ), K`4(X K4 )=K`5(X K4 That is, in X = X K1 X = X K2 X = X K3 X = X K4 At each point, the function segments are smoothly connected; the guide trajectory line Y=K(X) is a smooth curve with no sharp points.

[0126] As a configurable method, K`2 is a constant, meaning Y = K2(X) is a linear, single-decreasing function; as X increases, Y = K2(X) gradually decreases. Alternatively, K``1 > 0, K``3 < 0, K``4 > 0, K``5 > 0, meaning Y = K1(X), Y = K4(X), and Y = K5(X) are convex functions, with Y = K1(X) and Y = K4(X) being single-decreasing functions and Y = K5(X) being single-increasing functions; Y = K3(X) is a concave function and is also a single-decreasing function.

[0127] Under the above constraints, the guide trajectory line K extends sequentially along the fifth guide segment K5, the fourth guide segment K4, the third guide segment K3, the second guide segment K2, and the first guide segment K1, pointing from the side wall 32 of the door to the end of the door body 30 away from the side wall 32.

[0128] In one possible configuration, the first guide segment K1 is formed by two internally tangent circular arcs; the second guide segment K2 is a straight line; the third guide segment K3, the fourth guide segment K4, and the fifth guide segment K5 are all circular arcs; wherein, the first guide segment K1 and the second guide segment K2 are tangently connected, the circular arc-shaped third guide segment K3 and the fourth guide segment K4 are externally tangently connected, and the third guide segment K3 is tangently connected to the straight line-shaped second guide segment K2; in addition, the fourth guide segment K4 and the fifth guide segment K5 are externally tangently connected.

[0129] As a configurable method, the curvature of the second guide segment S2 of the guide trajectory line S is any value between 0.18 and 0.2; when the first guide segment S1 is a straight line, its slope in the XOY coordinate system is any value between 0.45 and 0.6.

[0130] As an optional configuration, the curvature of the first guide segment K1 is any value between 0.1 and 0.4; the curvature of the third guide segment K3 is any value between 0.1 and 0.3; the curvature of the fourth guide segment K4 is any value between 0.1 and 0.3; and the curvature of the fifth guide segment K5 is any value between 0.1 and 0.2. When the second guide segment K2 is set to a straight line, its slope in the XOY coordinate system is any value between -1 and -0.8.

[0131] The above-mentioned limitations on the curvature or slope of each segment of the guide trajectory line K and the guide trajectory line S limit the changing trend of the guide trajectory line K and the guide trajectory line S, making the movement of the dual axes smoother and more even.

[0132] In this design, the endpoint of the guide trajectory line S near the door sidewall 32 is designated as the second guide position P2, and the endpoint of the guide trajectory line S away from the door sidewall 32 is designated as the fourth guide position P4. The guide trajectory line S has a starting guide position P0, a first guide position P1 located between the starting guide position P0 and the second guide position P2, and a third guide position P3 located between the starting guide position P0 and the fourth guide position P4. That is, in the XOY coordinate system, along the X-axis, the second guide position P2, the first guide position P1, the starting guide position P0, the third guide position P3, and the fourth guide position P4 sequentially move away from the Y-axis. In other words, the distances between the second guide position P2, the first guide position P1, the starting guide position P0, the third guide position P3, and the fourth guide position P4 and the door sidewall 32 increase sequentially. In some embodiments of this application, the third guide position P3 is the connection point between the first guide segment S1 and the second guide segment S2.

[0133] The endpoint of the guide trajectory line K furthest from the door sidewall 32 is designated as the initial guide position Q0, and the endpoint of the guide trajectory line K closest to the door sidewall 32 is designated as the fourth guide position Q4. The guide trajectory line K has a first guide position Q1, a second guide position Q2, and a third guide position Q3. The first guide position Q1, the second guide position Q2, and the third guide position Q3 are located between the initial guide position Q0 and the fourth guide position Q4, and these positions are sequentially located closest to the door sidewall 32. In some embodiments of this application, the first guide position Q1 is the connection point between the first guide segment K1 and the second guide segment K2. As an alternative configuration, the second guide segment K2 is a straight line segment, and the third guide position Q3 is the position where the fourth guide segment K4 protrudes relative to the straight line containing the second guide segment K2. Understandably, the third guide position Q3 is located at the point where the fourth guide segment K4 is at the maximum straight-line distance relative to the second guide segment K2 (including its vicinity); this vicinity can be set to be less than 2 units away from the point of maximum distance. mm (scope).

[0134] In the XOY coordinate system, Y = S(X) lies below Y = K(X); X s0 >X K5 >0, Y=S(X) S0 )<Y=K(X K0 ), Y = K(X) K1 )<Y=S(X S2 )<Y=K(X K2 ).

[0135] In some embodiments of this application, the second shaft 42 is located on the side of the first shaft 41 away from the door sidewall 32 when the door 30 is closed, and the guide portion 50 is located on the side of the guide portion 60 close to the door sidewall 32 and the front wall 31. The first shaft 41 moves relative to the guide portion 50, and the second shaft 42 moves relative to the guide portion 60, so that the door 30 can move a certain distance inward (towards the second sidewall) while rotating, thereby compensating for the outward displacement of the outer edge W caused by the simple rotation of the door 30, so as to limit the distance of the outer edge w beyond the reference plane M0, and effectively avoid interference between the door 30 and the cabinet 100 when the door is open.

[0136] In some embodiments of this application, in the projection of the top wall of the housing 10, when the door 30 is closed, the straight line containing the central axis of the first axis 41 and the central axis of the second axis 42 is parallel to the front wall 31 of the door. That is, when the door 30 is closed, the straight line containing the central axis of the first axis 41 and the central axis of the second axis 42 is parallel to the X-axis. The above setting is detectable, effectively ensuring assembly accuracy and facilitating timely adjustments.

[0137] As a possible configuration, when the door 30 is closed, the front wall 31 of the door is parallel to the plane where the loading and unloading port is located, the side wall 32 of the door is perpendicular to the front wall 31, and the side wall 32 of the door is parallel or flush with the side wall of the first body; that is, in the projection of the top wall of the box 10, the side wall of the first body of the box 10 coincides with or is parallel to the Y-axis; it should be noted that the above "parallelism" includes parallelism in the standard mathematical definition, as well as the relationship between two surfaces with an angle of less than 3° due to processing errors or micro-deformation or micro-wear of the parts.

[0138] Since there is a relative motion relationship between the guide portion 50 and the first shaft 41, and between the guide portion 60 and the second shaft 42, if the door 30 is opened with the guide portion 50 and the guide portion 60 as stationary reference points, it is equivalent to the first shaft 41 moving under the restriction of the guide portion 50, and the second shaft 42 moving under the restriction of the guide portion 60. For ease of description, this application uses the guide portion 50 and the guide portion 60 as stationary reference points, and the first shaft 41 and the second shaft 42 moving relative to the reference points for explanation.

[0139] In this embodiment, the central axis of the first axis 41 is denoted as the guiding central axis P, and the central axis of the second axis 42 is denoted as the guiding central axis Q; within the projection of the plane containing the top wall of the housing 10, line segment PQ is denoted as the axis center line segment PQ; the center of the axis center line segment PQ is denoted as the axis center point I. For example... Figures 4-15 As shown, the movement of the first axis 41 along the guide portion 50 is equivalent to the movement of the guide center axis P along the guide trajectory line S, and the movement of the second axis 42 along the guide portion 60 is equivalent to the movement of the guide center axis Q along the guide trajectory line K. This allows the door 30 to move a certain distance inward (towards the side wall of the second body) while rotating, thereby compensating for the outward displacement of the outer edge w caused by the simple rotation of the door 30, effectively preventing interference between the door 30 and the cabinet 100 when the door is opened. The movement of the door 30 relative to the cabinet 10 is equivalent to the relative movement between the two in the plane containing the top wall of the cabinet 10 (or in the plane parallel to the top wall of the cabinet 10); that is, the movement of the door 30 relative to the cabinet 10 is a relative movement in a two-dimensional plane. Since the first axis 41 and the second axis 42 are fixed on the door 30, in the plane containing the top wall of the cabinet 10, the movement of the axis segment PQ relative to the hinge is equivalent to the movement of the door 30 relative to the hinge, and also equivalent to the movement of the door 30 relative to the cabinet 10.

[0140] It should be noted that, for ease of description, this embodiment uses the standard design guide trajectory line S and guide trajectory line K as examples; this includes situations where, due to factors such as clearance settings and machining accuracy during product design, the trajectory line of the central axis of the first axis 41 relative to the guide part 50 deviates from the guide trajectory line S or the movement trajectory line of the second axis 42 relative to the guide part 60 deviates from the guide trajectory line K; that is, it includes situations where, due to factors such as clearance settings and machining accuracy, the movement trajectory of the central axis of the hinge axis is not a standard trajectory line, but it still has the characteristics of a standard trajectory line.

[0141] Additionally, it should be noted that in the above embodiments, the guide trajectory line S is described using two trajectory segments (guide segments) as an example, and the guide trajectory line K is described using five trajectory segments (guide segments), but it is not limited to the above number of trajectory segments; the present invention includes only the setting of some of the cooperating trajectory segments, and for ease of description, the present invention is described using the overall example.

[0142] In the following description, for ease of explanation, the motion of the axis segment PQ relative to the hinge is selected in the plane where the top wall of the housing 10 is located to represent the motion of the door 30 relative to the housing 10.

[0143] In the embodiments of this application, in the plane where the top wall of the box 10 is located, the door 30 rotates around a changing point during the opening process, and the changing point is the center of the axis line segment PQ; that is, in this embodiment, in the plane where the top wall of the box 10 is located, the door 30 rotates around the changing axis center point I.

[0144] like Figure 4 As shown, in this embodiment, when the door 30 is in the closed state, the central axis of the first axis 41 (guide center axis P) is located at the starting guide position P0 of the guide trajectory line S, and the central axis of the second axis 42 (guide center axis Q) is located at the starting guide position Q0 of the guide trajectory line K. That is, when the door 30 is in the closed state, the first axis 41 is located in the middle region of the first guide segment S1 of the guide part 50, and the second axis 42 is located at the end of the guide part 60 away from the door side wall 32; the second axis 42 is located on the side of the first axis 41 away from the first body side wall. In some embodiments of this application, in the projection of the top wall of the box 10, when the door 30 is closed, P0Q0 is parallel to the front wall 31 of the door.

[0145] In this embodiment, under the constraints of the guide portion 50 and the first shaft 41, and the guide portion 60 and the second shaft 42, the description will be based on the example of the refrigerator opening maximum angle G4 > 90°. During the process of the door 30 opening from the closed state to the maximum angle G4, when the door 30 rotates open to a specific angle, the relative positions of the first shaft 41 relative to the guide portion 50 and the second shaft 42 relative to the guide portion 60 are as follows:

[0146] In the following explanation, This indicates the opening angle of door 30, and the opening angle when door 30 is closed. The door 30 opens relative to the box 10 at the angle when the access opening is open. It is a positive number;

[0147] like Figure 4 As shown, At this time, the door 30 is in the closed state; the guide center axis P is located at the starting guide position P0 of the guide trajectory line S, and the guide center axis Q is located at the starting guide position Q0 of the guide trajectory line K.

[0148] like Figure 5 As shown, At this time, the door 30 opens at an angle of G1; the guide center axis P is located at the first guide position P1 of the guide trajectory line S, and the guide center axis Q is located at the first guide position Q1 of the guide trajectory line K. That is, when the door 30 opens at an angle of G1, the guide center axis Q moves to the connection position between the first guide segment K1 and the second guide segment K2 of the guide trajectory line K, and the guide center axis P is located on the first guide segment S1.

[0149] like Figure 6 As shown, At this time, the door 30 opens at an angle of G2; the guide center axis P is located at the second guide position P2 of the guide trajectory line S, and the guide center axis Q is located at the second guide position Q2 of the guide trajectory line K. That is, when the door 30 opens at an angle of G2, the guide center axis P moves to the end point of the guide trajectory line S near the door side wall 32, and the guide center axis Q is located on the second guide segment K2 of the guide trajectory line K.

[0150] like Figure 7 As shown, At this time, the door 30 opens at an angle of G3; the guide center axis P is located at the third guide position P3 on the guide trajectory line S, and the guide center axis Q is located at the third guide position Q3 on the guide trajectory line K. That is, when the door 30 opens at an angle of G3, the guide center axis P moves to the connection position between the first guide segment S1 and the second guide segment S2 on the guide trajectory line S, and the guide center axis Q is located on the third guide segment K3. Alternatively, at this time, the guide center axis Q can be set to the position where the fourth guide segment K4 protrudes from the straight line containing the second guide segment K2.

[0151] like Figure 8 As shown, At this time, the door 30 opens at an angle of G4; the guide center axis P is located at the fourth guide position P4 on the guide trajectory line S, and the guide center axis Q is located at the fourth guide position Q4 on the guide trajectory line K. That is, when the door 30 opens at an angle of G4, the guide center axis Q moves to the end of the guide trajectory line K near the door side wall 32, and the guide center axis P is located at the end of the guide trajectory line S away from the door side wall 32.

[0152] Wherein, 0° < G1 < G2 < G3 < G4; G1, G2, G3, and G4 are respectively denoted as the first angle, the second angle, the third angle, and the fourth angle.

[0153] Based on the positions of the two limiting axes (first axis 41 and second axis 42) relative to the trajectory guides (guide part 50 and guide part 60) when the door 30 is opened to a specific angle, it can be seen that the second axis 42 moves towards the side wall 32 of the door throughout the entire movement relative to the guide part 60; while the first axis 41 moves towards the guide part 50 in the following ways: during the process of opening the door 30 from the closed state to G2, the first axis 41 moves along the guide part 50 towards the side wall 32 and the front wall 31 of the door; during the process of opening the door 30 from G2 to G4, the first axis 41 moves along the guide part 50 away from the side wall 32 and the front wall 31 of the door. The relative movement in these two stages will be explained below from the perspective of the relationship between the first axis 41 and the guide part 50, and between the second axis 42 and the guide part 60:

[0154] (1) The first stage, combined with Figures 4-6 , Figures 10-11 As shown, the process of the door 30 rotating from the closed state to G2.

[0155] In this first stage, the door 30 opens from 0° through G1 to G2. During this process, the guide center axis P moves from the initial guide position P0 along the first guide segment S1 towards the direction close to the door side wall 32 and the front wall 31 to the second guide position P2, the endpoint of the guide trajectory line S near the door side wall 32; the guide center axis Q moves from the initial guide position Q0 along the guide trajectory line K towards the direction close to the door side wall 32 and away from the front wall 31, first along the first guide segment K1 and then along the second guide segment K2.

[0156] Specifically, the guide center axis P moves from the starting guide position P0 along the first guide segment S1, passing through the first guide position P1 to the second guide position P2; the guide center axis Q moves from the starting guide position Q0 along the first guide segment K1 to the first guide position Q1, and then from the first guide segment K1 along the second guide segment K2 to the second guide position Q2.

[0157] During the opening process in the first stage described above, taking the door body 30 (guide part 50 and guide part 60) as a reference, as the door body 30 opens from 0° to G2, the axis line segment PQ rotates clockwise from P0Q0 and moves towards the door side wall 32 and the door rear wall 33, successively moving to P1Q1 and P2Q2; that is, the movement trend of the axis line segment PQ is P0Q0→P1Q1→P2Q2. At the same time, the movement trend of the axis center point I as the axis line segment PQ moves is I0→I1→I2; that is, during the opening process of the door body 30, relative to the door body 30, the axis center point I moves towards the door side wall 32 and the door rear wall 33.

[0158] In summary, during the process of the door 30 opening from the closed state to G2, with the door 30 (track guide) as the reference, the box 10 relative to the door 30 has a displacement parallel to the rear wall 33 of the door and a displacement parallel to the side wall 32 of the door.

[0159] Based on the relativity of motion, taking the housing 10 as a reference frame, during the process of the door 30 opening from the closed state to G2, the door 30 has a displacement relative to the housing 10 that is parallel to the rear wall 33 and a displacement that is parallel to the side wall 32. For ease of explanation, in the displacement decomposition relative to the housing 10, the displacement of the door 30 parallel to the rear wall 33 is denoted as the first direction displacement. The displacement parallel to the side wall 32 of the door is denoted as the displacement in the second direction.

[0160] (2) The second stage, combined with Figures 6-8 ,like Figures 11-13 As shown, the door 30 is rotated open from G2 to G4.

[0161] In this second stage, the door 30 opens from G2 through G3 to G4. During this process, the guide center axis P moves from the second guide position P2 along the guide trajectory line S away from the door side wall 32 and the front wall 31, first along the first guide segment S1, and then along the second guide segment S2 to the end point of the guide trajectory line S away from the door side wall 32; the guide center axis Q moves from the second guide position Q2 along the guide trajectory line K, first towards the door side wall 32 and away from the front wall 31, and then towards the end point of the guide trajectory line K near the door side wall 32; wherein, the guide center axis Q first moves along the second guide segment K2, then along the third guide segment K3, and then along the fourth guide segment K4.

[0162] Specifically, the guide center axis P moves from the second guide position P2 through the first guide position P1, the initial guide position P0, and the third guide position P1 to the fourth guide position P4; the guide center axis Q moves from the second guide position Q2 through the third guide position Q1 to the fourth guide position Q4.

[0163] During the second stage of opening, taking the door body 30 (guide section 50 and guide section 60) as a reference, as the door body 30 opens from G2 to G4, the axis segment PQ rotates clockwise from P2Q2 and moves towards the door side wall 32 and the door rear wall 33, successively moving to P3Q3 and P4Q4; that is, the movement trend of the axis segment PQ is P2Q2→P3Q3→P4Q4. At the same time, the movement trend of the axis center point I as the axis segment PQ moves is I2→I3→I4; that is, during the opening of the door body 30, relative to the door body 30, the axis center point I has a tendency to move towards the door side wall 32 and the door rear wall 33.

[0164] In summary, during the process of the door 30 opening from G2 to G4, with the door 30 (track guide) as the reference, the box 10 relative to the door 30 has a displacement parallel to the rear wall 33 and a displacement parallel to the side wall 32.

[0165] Based on the relativity of motion, taking the housing 10 as the reference frame, during the opening of the door 30 from G2 to G4, the door 30 has a displacement parallel to the rear wall 33 and a displacement parallel to the side wall 32 relative to the housing 10. Similar to the explanation in the first stage, in the displacement decomposition of the door 30 relative to the housing 10, the displacement of the door 30 parallel to the rear wall 33 is denoted as the first direction displacement. The displacement parallel to the side wall 32 of the door is denoted as the displacement in the second direction.

[0166] As a settable configuration, G3 = 90°. That is, when the door 30 is opened to 90°, the guide center axis P moves to the connection position between the first guide segment S1 and the second guide segment S2; the guide center axis Q moves to the position where the fourth guide segment K4 protrudes from the straight line of the second guide segment K2.

[0167] Based on the first and second stages of the door body 30's movement, relative to the box body 10, during the process of opening from the closed state to G3 = 90°, the door body 30 has a first direction displacement parallel to its rear wall 33. Displacement in the second direction parallel to its door sidewall 32 It should be noted that the displacement in the first direction mentioned above... Second directional displacement These are all instantaneous relative displacements, used to illustrate the current direction of movement relative to the box 10 and the door 30. That is, the displacement in the first direction mentioned above. Second directional displacement All of these are the instantaneous displacements of gate 30 in its XOY coordinate system.

[0168] Based on the above descriptions of the two stages of motion, the motion trend of the door 30 relative to the housing 10 is explained. In the plane containing the top wall of the housing 10, a displacement coordinate system AOB is established on the side of the housing 10 closest to the door 30. Specifically, in displacement coordinate system AOB, OB is perpendicular to the plane containing the pick-up / placement opening, and B is located on the side of O furthest from the pick-up / placement opening (front side); OA is parallel to the plane containing the pick-up / placement opening, and A is located on the side of O furthest from the side wall of the second body (outer side). That is, in displacement coordinate system AOB, the direction from the side wall of the second body to the side wall of the first body is positive, and the direction from the pick-up / placement opening to the front wall 31 of the door when it is closed (from back to front) is positive. It should be noted that during the opening process of the door 30, the displacement coordinate system AOB remains stationary relative to the housing 10 and does not move with the opening of the door 30. During the opening of the door 30, the relative relationship between the coordinate system XOY and the displacement coordinate system AOB of the door 30 changes continuously. This invention obtains the motion of the door 30 relative to the box 10 by transforming the displacement vector in the above two coordinate systems.

[0169] During the process of opening the door 30 from the closed state to 90°, as the door 30 rotates counterclockwise relative to the housing 10, the door side wall 32, the door rear wall 33, and the door front wall 31 also rotate counterclockwise during this opening phase. In the plane containing the top wall of the housing 10, the door side wall 32 extends outward and forward along the direction from the inner edge N to the outer edge W (the door rear wall 33 points to the door front wall 31); the door rear wall 33 extends inward and forward along the direction from the door side wall 32 to the end of the door 30 opposite to the door side wall 32.

[0170] During the opening process described above (opening from the closed state to 90°), the door sidewall 32, initially parallel to the reference plane M0, rotates counterclockwise. The angle between the door sidewall 32 and the plane containing the retrieval opening gradually decreases, while the angle between the door sidewall 32 and the reference plane M0 gradually increases. That is, as the door 30 opens from the closed state to 90°, relative to the housing 10, along the direction from the inner edge N to the outer edge W, the door sidewall 32 extends away from the second body sidewall and the retrieval opening. Simultaneously, the angle between the door rear wall 33 and the plane containing the retrieval opening gradually increases, while the angle between the door rear wall 33 and the reference plane M0 gradually decreases. That is, as the door 30 opens from the closed state to 90°, relative to the housing 10, along the direction from the door sidewall 32 to the end of the door 30 opposite to the door sidewall 32, the door rear wall 33 extends away from the first body sidewall and the retrieval opening.

[0171] Under the trajectory characteristics defined in this application, the movement of the door 30 during the process of opening from the closed state to 90° has the following characteristics:

[0172] During the process of the door 30 opening from the closed state to G2 (G2 < 90°), with the box 10 as the reference, in the displacement coordinate system AOB, the displacement in the first direction is... The displacement on the A-axis is decomposed into the following values: Second directional displacement The displacements on the A-axis are decomposed into: in, That is, during the process of the door 30 opening from the closed state to G2, in the displacement coordinate system AOB, the door 30 has a first component displacement. Therefore, it can be concluded that: relative to the box 10, the door 30 has a tendency to move in the negative direction along the A axis, that is, the door 30 has a tendency to move inward; that is, during the process of the door 30 opening from the closed state to G2 (G2 < 90°), the door 30 has a tendency to move inward relative to the box 10.

[0173] During the process of door 30 opening from G2 to G3 = 90°, with box 10 as the reference, in the displacement coordinate system AOB, the displacement in the first direction is... The displacement on the A-axis is decomposed into the following values: Second directional displacement The displacements on the A-axis are decomposed into: in, That is, during the process of the door 30 opening from G2 to G3 = 90°, in the displacement coordinate system AOB, the door 30 has a first component displacement. Therefore, it can be concluded that: relative to the box 10, the door 30 has a tendency to move in the positive direction along the A axis, that is, the door 30 has a tendency to move outward; that is, during the process of the door 30 opening from G2 to 90°, the door 30 has an outward tendency relative to the box 10.

[0174] In summary, during the process of opening the door 30 from the closed state to 90°, the door 30 first moves inward a certain distance relative to the cabinet 10 to avoid interference with surrounding cabinets or walls during the opening process; then the door 30 moves outward a certain distance to avoid obstructing the opening of drawers, shelves, etc. inside the cabinet 10; finally, after reaching 90°, the door 30 continues to open relative to the cabinet 10 to increase the opening angle of the door 30.

[0175] In some embodiments of this application, the maximum distance by which the outer edge W of the door 30 extends beyond the reference plane M0 during the entire opening process of the door 30 is denoted as L. max ;

[0176] When the door 30 is opened to 90°, the front wall 31 is located outside the reference plane M0, and the distance between the front wall 31 and the reference plane M0 is denoted as L. 90° .

[0177] Configurable, L max =L 90°That is, when the door 30 is opened to 90°, the distance of the front wall 31 of the door extending beyond the reference plane M0 is equal to the maximum distance of the outer edge W of the door 30 extending beyond the reference plane M0. This design ensures that when the door 30 is opened to 90°, it makes full use of the space reserved to avoid interference between the door 30 and the cabinet (the maximum distance L of the outer edge W of the door 30 extending beyond the reference plane M0). max This design aims to maximize the proximity of the door 30 to the outside when opened to 90° within the usable space, thereby minimizing the obstruction of the access opening by the door 30 and preventing the door 30 from hindering the opening of drawers, shelves, etc. inside the cabinet 10, thus increasing the utilization rate of the horizontal space of the storage room by drawers, etc.

[0178] As a configurable method, under the limitation of the trajectory features in this embodiment, when the door 30 is opened to any angle between 5° and 8°, the outer edge W extends the maximum distance beyond the reference plane M0 of the door 30.

[0179] In some embodiments of this application, such as Figure 16 As shown, the curvature of the second guiding segment S2 of the guiding trajectory line S is any value between 0.19 and 0.2; when the first guiding segment S1 is a straight line, its slope in the XOY coordinate system is any value between 0.45 and 0.5.

[0180] The configurable guide trajectory line K includes a first guide segment K1, a second guide segment K2, a third guide segment K3, and a fourth guide segment K4; that is, the guide trajectory line K does not include a fifth guide segment K5. The first guide segment K1 is an arc of equal radius. The curvature of the first guide segment K1 is any value between 0.3 and 0.4; the curvature of the third guide segment K3 is any value between 0.2 and 0.3; and the curvature of the fourth guide segment K4 is any value between 0.1 and 0.2. In the above settings, the curvature changes of the third guide segment K3 and the fourth guide segment K4 are smaller, resulting in a smoother and more fluid guide trajectory line K.

[0181] The above settings, with the guide trajectory line S and the guide trajectory line K working together, make the dual-axis motion smoother.

[0182] Example 2

[0183] The door 30 rotates relative to the cabinet 10 to open and close the refrigerator cabinet. After the door 30 is opened, it is prone to automatically closing due to the shift of its center of gravity, and cannot remain in the open state. This causes users to need to hold the door with one hand and take out food with the other hand when using the refrigerator, which brings a lot of inconvenience.

[0184] In this embodiment, the hinge assembly includes a stop mechanism so that the door 30 can stop rotating at a specific angle during the opening process, thereby maintaining the door 30 in the open state and facilitating the user to take or put away items.

[0185] Specifically, refer to Figures 17 to 20 The stopping mechanism includes an elastic plunger 7 and a limiting recess 6; during the rotation of the door body 30, when the elastic plunger 7 is engaged in the limiting recess 6, the door body 30 stops rotating relative to the box body 10.

[0186] A receiving portion 421 is formed on the first shaft 41 or the second shaft 42. An elastic plunger 7 is installed in the receiving portion 421. A limiting recess 6 is provided in the guide groove corresponding to the first shaft 41 or the guide groove corresponding to the second shaft 42. During the opening of the door 30, the first shaft 41 moves relative to the guide groove, and the second hinge groove 42 moves relative to the guide groove. When the elastic plunger 7 provided on the hinge shaft is engaged in the limiting recess 6 of the corresponding track groove, the door 30 stops rotating relative to the box 10.

[0187] The following explanation uses an example where the elastic plunger 7 is mounted on the second shaft 42 and the limiting recess 6 is located in the guide groove. It should be noted that the setting of the stop mechanism is not limited by the setting of the limiting plunger 71 on the second shaft 42 and the limiting recess 6 located at the bottom of the guide groove.

[0188] Specifically, when the door 30 is opened to G3, the guide center shaft P moves to the connection position between the first guide segment S1 and the second guide segment S2; the guide center shaft Q moves to the position where the fourth guide segment K4 protrudes relative to the line containing the second guide segment K2; the limiting recess 6 of the rotation-stopping mechanism is located in the guide groove at the position where the fourth guide segment K4 protrudes relative to the line containing the second guide segment K2, so that the door 30 stops rotating when it is opened to G3 and remains in the open G3 position, making it convenient for the user to take out or put in items. The door 30 can only continue to open or close when the user applies external force to move the elastic plunger 7 out of the limiting recess 6.

[0189] Specifically, the elastic plunger 7 includes: a support 70, an elastic element 71, and a limiting protrusion 72.

[0190] The support member 70 can be shaft-shaped, with a receiving cavity 701 open at one end. A limiting protrusion 72 is located at the open end of the receiving cavity 701. One end of the elastic member 71 is connected to the bottom of the receiving cavity 701, and the other end is connected to the limiting protrusion 72. Under the action of external force, the limiting protrusion 72 and the elastic member 71 interact, allowing the limiting protrusion 72 to move relative to the support member 70 along the elastic deformation direction of the elastic member 71. When the limiting protrusion 72 extends out of the support member 70 and engages with the limiting recess 6, the door 30 is stopped.

[0191] Specifically, the support member 70 may have external threads to facilitate the installation and connection of the elastic plunger 7 and the second hinge post 42; the elastic member 71 may be a spring with a large elastic range and a long service life.

[0192] In one possible configuration, a mating part 702 is formed on the outer wall of the open end of the support member 70. When the support member 70 is installed in the receiving portion 421 of the second shaft 42, the mating part 702 mates with the end of the second shaft 42.

[0193] The limiting protrusion 72 can be a spherical body; correspondingly, the limiting recess 6 can be a spherical groove. The spherical shape facilitates the sliding of the limiting protrusion 72 into the limiting recess 6 and the sliding of the limiting protrusion 72 out of the limiting recess 6, increasing the smoothness of the door 30 stopping and continuing to rotate. As one configuration, the external force required by the user to push the door 30 from the stopped state is 5N to 15N, which can be controlled by the shape of the limiting protrusion 72 and the limiting recess 6. In some embodiments of this application, when the limiting protrusion 72 is set to a spherical shape, the diameter of the spherical limiting protrusion 72 is denoted as D1; ​​the end face diameter of the guide shaft is D2; wherein, D1:D2∈[0.65, 0.85] any value, to ensure the strength of the second shaft and the reliability of the connection between the elastic plunger and the second shaft.

[0194] The elastic plunger 7 has an extended state and a retracted state. Specifically, as follows... Figure 8 In the retracted state, the limiting protrusion 72 compresses the elastic member 71 and retracts into the receiving cavity 701 of the support member 70. In this state, the limiting protrusion 72 is offset from the limiting recess 6 and will not affect the rotation opening and closing action of the door body 30. At this time, the limiting protrusion 72 interacts with the bottom of the guide groove, and the bottom of the guide groove applies a force to the limiting protrusion 72, and the limiting protrusion 72 compresses the elastic member 71. In this retracted state, the bottom of the guide groove and the limiting protrusion 72 always interact.

[0195] In the extended state, the limiting protrusion 72 extends and engages with the limiting recess 6. When the elastic plunger 7 is opposite the limiting recess 6, because the force exerted by the limiting recess 6 on the elastic plunger 7 is less than the force exerted by the bottom of the guide groove on the elastic plunger 7, the elastic member 71 lengthens under the action of the restoring force, and the limiting protrusion 72 moves out of the receiving cavity 701 of the support member 70 and engages with the limiting recess 6, causing the door 30 to stop rotating. When an external force is applied to the door 30 again, the elastic plunger 7 disengages from the limiting recess 6, the bottom of the guide groove exerts a greater force on the limiting protrusion 72, the elastic member 71 compresses, and the limiting protrusion 72 moves into the receiving cavity 701 of the support member 70, changing to the retracted state, and the door 30 can rotate normally.

[0196] As a configurable method, when in the extended state, the distance between the maximum distance point of the limiting protrusion 72 from the elastic member 71 and the end face of the opening end of the support member 70 is denoted as C; where C: D1∈[0.38, 0.5] any value; that is, the part of the spherical limiting protrusion 72 extending out of the support member 70 is smaller than the radius of the sphere, so as to increase the smoothness of the door 30 stopping and continuing to rotate.

[0197] When the door 30 is opened to G3, the guide center axis P moves to the connection position between the first guide segment S1 and the second guide segment S2, and the guide center axis Q moves to the position where the fourth guide segment K4 protrudes from the straight line of the second guide segment K2. From this position, the movement direction of the first axis 41 relative to the guide part 50 changes significantly, and the movement direction of the second axis 42 relative to the guide part 60 changes significantly. At this time, the first axis 41 and the second axis 42 are prone to slippage at their respective positions. The refrigerator of the present invention, by setting a stop mechanism between the hinge axis and the track groove that cooperates with it, and by stopping the door 30 when it is opened to G3, avoids the problem of the door 30 automatically closing under gravity after it is opened. On the other hand, it avoids the door 30 slipping when it is opened to G3 under the setting of the track feature of this application, which would cause the door 30 to be unstable in opening and closing, and further increases the stability of the door 30 in opening and closing.

[0198] As a settable setting, G3 = 90°, meaning that when the door 30 is opened to 90°, the guide center axis P moves to the connection position between the first guide segment S1 and the second guide segment S2, and the guide center axis Q moves to the position where the fourth guide segment K4 protrudes from the straight line of the second guide segment K2. At this time, the door 30 stops rotating, making it convenient for users to take out and put in items, pull out drawers or shelves, etc.

[0199] Example 3

[0200] Reference Figures 17 to 20 When the elastic plunger 7 engages with the limiting recess 6, the door 30 is in a stopped state. The elastic plunger 7 and the limiting recess 6 interact to overcome the force that causes the door 30 to tend to close; that is, in the stopped state, there is an interaction force between the elastic plunger 7 and the limiting recess 6, and there is friction between them. When the door 30 moves from the stopped state to the normal rotating state, an external force is required to push the door 30 so that the limiting recess 6 overcomes the resistance brought by the elastic plunger 7 under the action of the door 30, thereby separating the limiting recess 6 from the elastic plunger 7. During this separation process, there is friction between the elastic plunger 7 and the limiting recess 6. In summary, the limiting recess 6 and the limiting protrusion 72 of the stopping mechanism are easily worn during use. Therefore, this embodiment is designed.

[0201] The difference between this embodiment and embodiment two is that: the bottom wall of the guide groove in this embodiment has a mounting hole 601, a wear-resistant block 8 is provided in the mounting hole 601, and a limiting recess 6 for cooperating with the elastic plunger 7 is formed on the wear-resistant block 8.

[0202] Specifically, a track block 2 is installed at the end of the door body 30 near the hinge plate 40; specifically, the track block 2 includes a plate 20, on which a guide groove and a guide slot are formed.

[0203] The depth of the guide groove can be set to be greater than the depth of the guide channel; correspondingly, the length of the first axis 41 is greater than the length of the second axis 42.

[0204] Specifically, a first receiving portion 34 and a second receiving portion 35 are formed at the end of the door body 30 near the hinge plate; wherein the depth of the second receiving portion 35 is less than the depth of the first receiving portion 34. In this embodiment, the two receiving portions 34 and 35 are connected in adjacent areas. A mounting surface is formed around the ends of the first receiving portion 34 and the second receiving portion 35 near the hinge.

[0205] The track block 2's plate 20 is mounted on the mounting platform, the guide groove is installed in the first receiving part 34, and the guide groove is installed in the second receiving part 35. The track block 2's plate 20 is connected to the mounting platform using screws or other connectors to fix the track block 2 to the door body 30. Because the first receiving part 34 and the second receiving part 35 have different depths, the first receiving part 34 limits the guide groove, and the second receiving part 35 limits the guide groove. Combined with the fixed connection between the track block 2's plate 20 and the mounting platform, this increases the robustness of the connection between the track block 2 and the door body 30.

[0206] The wear-resistant block 8 includes a wear-resistant column 81 and a fixing plate 82 surrounding the end of the wear-resistant column 81; a limiting recess 72 is formed on the side of the wear-resistant column 81 away from the fixing plate 82. As one possible configuration, the wear-resistant column 81 is hollow.

[0207] The wear-resistant column 81 of the wear-resistant block 8 passes through the mounting hole 601 on the guide groove. The fixing plate 82 at the end of the wear-resistant column 81 is located on the side of the bottom of the guide groove away from its inner cavity. The fixing plate 82 is clamped between the bottom of the guide groove and the bottom wall of the second receiving part 35. The relative displacement of the wear-resistant block 8 perpendicular to the bottom of the guide groove can be limited by the fixing of the track block 2. At the same time, the mounting hole 601 effectively limits the displacement of the wear-resistant block 8 in the plane where the bottom wall of the guide groove is located.

[0208] As an optional configuration, a recess 5 is formed on the second receiving portion 35 at a position corresponding to the mounting hole 601, so that the fixing plate 82 on the wear-resistant block 8 is installed in the recess 5. The bottom of the guide groove mates with the bottom wall of the second receiving portion 35, and the recess 5 mates with the bottom of the guide groove to clamp the fixing plate 82 between the two. The position of the wear-resistant block 8 can be further defined by fixing the track block 2. In this configuration, the recess 5 is annular to accommodate the fixing plate 82; the annular recess mates with the annular fixing plate, so that the portion surrounded by the annular recess mates with the hollow portion of the wear-resistant column to further reinforce the wear-resistant block.

[0209] During the opening of the door 30, as the door 30 opens, the second shaft 42 drives the elastic plunger 7 located on it to move and gradually approach the wear-resistant block 8; when the elastic plunger 7 corresponds to the limiting recess 6 on the wear-resistant block 8, the elastic plunger 7 is inserted into the limiting recess 6, causing the door 30 to stop rotating.

[0210] In this embodiment, the wear-resistant block 8 effectively increases the wear resistance of the limiting recess 6, ensuring the effectiveness of the fit between the elastic plunger 7 and the limiting recess 6, and preventing the stop failure caused by long-term wear of the elastic plunger 7 and the limiting recess 6.

[0211] Example 4

[0212] This embodiment provides a different configuration of the rotating stop mechanism. The difference between this embodiment and Embodiment Two is that the structure of the limiting protrusion 72 is different in this embodiment.

[0213] In Embodiment 2, the limiting protrusion 72 is spherical. Due to the shape of the sphere, the length of the limiting protrusion 72 extending out of the support member 70 is limited. During refrigerator manufacturing, unevenness in the door body necessitates the use of a rotating shim at the double-axis hinge to adjust this unevenness. The placement of the shim increases the distance between the bottom of the track groove and the opening end face of the support member 70. With the spherical limiting protrusion 72's protrusion from the support member 70 limited, the limiting recess 6 exerts less force on the spherical limiting protrusion 72, reducing the compression of the elastic member 71. This results in poor stability of the rotation stop and a tendency for rotation stop failure.

[0214] Reference Figures 21 to 25 In this embodiment, the limiting protrusion 72 has a limiting post 721 and a limiting body 722 located at one end of the limiting post 721. The limiting post 721 is installed in the receiving cavity 701 of the support member 70 and is connected to the bottom end of the elastic member 71 away from the receiving cavity 701. The limiting body 722 is located outside the receiving cavity 701 and is used to cooperate with the limiting recess 6.

[0215] As an optional configuration, the limiting post 721 is cylindrical and the limiting body 722 is a spherical cap to increase the distance by which the spherical cap-shaped limiting body 722 extends out of the receiving cavity 701. In addition, the spherical cap-shaped limiting body 722 can reduce the friction between the limiting protrusion 72 and other components during contact and movement, which is conducive to the limiting protrusion 72 sliding into the limiting recess 6 and the limiting protrusion 72 sliding out of the limiting recess 6, thereby increasing the smoothness of the door 30 stopping and continuing to rotate.

[0216] Among them, a mating part 702 is formed on the outer wall of the open end of the support member 70. When the support member 70 is installed in the receiving part 421 of the second shaft 42, the mating part 702 mates with the end of the second shaft 42.

[0217] A first limiting portion 703 is formed on the inner wall of the receiving cavity 701 of the support member 70 near its opening end; a second limiting portion 7211 is formed on the outer peripheral wall of the limiting post 721 of the limiting protrusion 72 away from the limiting body 722; wherein, the limiting post 721 passes through the first limiting portion 703, the second limiting portion 7211 is located inside the receiving cavity 701, and the limiting body 722 is located outside the receiving cavity 701; the second limiting portion 7211 is located near the elastic part of the first limiting portion 703. On one side of component 71; in its natural state (the elastic protrusion is not subjected to external force, and each component of the elastic plunger 7 is only under its own constraint), along the elastic deformation direction of the elastic component 71, the first limiting part 703 and the second limiting part 7211 engage to restrict the elastic component 71 within the receiving cavity 701, preventing the limiting protrusion 72 from causing the elastic component 71 to extend and be pulled out of the receiving cavity 701 of the support member 70, thus ensuring the elastic force of the elastic component 71.

[0218] The elastic plunger 7 has an extended state and a retracted state. Specifically, as follows... Figure 23 In the retracted state, the limiting protrusion 72 is offset from the limiting recess 6, and the limiting protrusion 72 interacts with the bottom of the guide groove. The bottom of the guide groove exerts a force on the limiting body 722, causing the limiting protrusion 72 to move away from the bottom of the guide groove. The distance between the first limiting part 703 and the second limiting part 7211 increases, and the limiting protrusion 72 compresses the elastic member 71, causing the elastic member 71 to retract. In this retracted state, the bottom of the guide groove and the limiting protrusion 72 continue to interact.

[0219] Specifically, such as Figure 21 When extended, the limiting body 722 separates from the bottom of the guide groove, and the limiting body 722 corresponds to the limiting recess 6. Since the distance between the bottom wall of the limiting recess 6 and the bottom wall of the receiving cavity 701 is greater than the distance between the bottom wall of the guide groove and the bottom wall of the receiving cavity 701, the elastic member 71 becomes longer under the action of elastic restoring force. The second limiting part 7211 approaches the first limiting part 703, and the elastic member 71 drives the limiting post 721 to move away from the bottom wall of the receiving cavity 701. The limiting post 721 extends out of the receiving cavity 701, and the limiting body 722 enters the limiting recess 6. The limiting recess 6 restricts the limiting post 721 from moving relative to the guide groove along the extension direction of the guide groove, and the door 30 stops rotating.

[0220] In this embodiment, the limiting protrusion 72 includes a limiting post 721 and a limiting body 722, which significantly increases the length of the limiting body 722 extending out of the support member 70 in its natural state. When the distance between the limiting recess 6 and the end face of the support member 70 is equal, and the limiting plunger 71 corresponds to the limiting recess 6, compared to Embodiment 2, the elastic member 71 in this embodiment has a larger compression length and greater elastic potential energy. Consequently, the elastic member 71 exerts a larger reaction force on the limiting post 721, and the interaction force between the limiting recess 6 and the limiting body 722 is greater, meaning the fit between the limiting recess 6 and the limiting body 722 is more stable.

[0221] In this embodiment, the structural design of the limiting protrusion 72 increases the length of the limiting body 722 extending out of the support member 70, effectively ensuring the interaction force when the limiting recess 6 and the limiting body 722 are engaged; even when the distance between the bottom of the track groove and the opening end face of the support member 70 is increased by the gasket, it is ensured that the force generated by the compression of the elastic member 71 on the limiting protrusion 72 is large enough, so that the limiting protrusion 72 and the limiting recess 6 are stably engaged, ensuring the effectiveness and stability of the rotation stop.

[0222] In one configurable manner, when the limiting protrusion 72 and the limiting recess 6 are engaged in the stopped state, the distance between the end face of the limiting post 721 near the elastic member 71 and the opening end face of the support member 70 is T1; the length of the limiting post 721 is denoted as T2, the length of the elastic member 71 is denoted as T2, and the radius of the limiting body 722 is denoted as R; the total length of the limiting protrusion 72 is T0 = T2 + R;

[0223] Where T1:T0∈[0.4,0.6] any value; the above settings ensure, on the one hand, the length of the limiting protrusion 72 extending out of the support member 70, and on the other hand, the length of the limiting post 721 being limited by the support member 70, so as to limit the torque generated by the limiting recess 6 on the limiting protrusion 72 when the second shaft 42 moves relative to the guide groove, restricting the limiting protrusion 72 to mainly move along the central upper axis direction of the support member 70, ensuring the stability of the fit and the smoothness of the movement when the limiting recess 6 and the limiting protrusion 72 are not fully fitted.

[0224] R: T0∈[0.25, 0.4] any value, to limit the length of the limiting body 722 extending out of the support member 70, so that it fits into the limiting recess 6; under the equal gap setting of the second axis 42 and the limiting recess 6, the above limitation limits the length of the limiting protrusion 72 received in the receiving part 421, that is, limits the length of the elastic member 71 compressed, to ensure that there is a sufficiently large elastic force; to ensure that the interaction force between the limiting body 722 and the limiting recess 6 can make it stably fit.

[0225] The diameter of the limiting post is denoted as D3; the end face diameter of the first or second shaft is denoted as D2; where D3 and D2 ∈ [0.5, 0.7], respectively. This is to ensure the strength of the second shaft and the reliability of the connection between the elastic plunger and the second shaft.

[0226] Example 5

[0227] In the above embodiments, during the opening of the door 30, when the elastic plunger 7 and the limiting recess 6 are misaligned and the elastic element 71 is in a compressed state, the limiting protrusion 72 always interacts with the bottom wall of the track groove (guide groove) to compress the elastic element 71. This allows the elastic element 71 to extend under the action of elastic restoring force when the elastic plunger 7 and the limiting recess 6 are engaged, thus achieving the purpose of stopping the rotation. However, when the elastic plunger 7 and the limiting recess 6 are misaligned, the limiting protrusion 72 is always in direct contact with the track groove (guide groove), causing the bottom of the track groove to be subjected to long-term stress and wear, resulting in creep. In the above embodiments three and four, the limiting protrusion 72 that engages with the track groove is a spherical body. The top of the spherical body is in point contact with the bottom of the track groove, resulting in severe stress concentration and severe wear after long-term use.

[0228] Reference Figures 26 to 28 In this embodiment, a mounting hole 601 with a shape consistent with the bottom of the track groove is formed. The mounting hole 601 covers the extension length of the track groove.

[0229] A wear-resistant block 8 is installed within the mounting hole 601 of the track groove. The wear-resistant block 8 includes a wear-resistant groove 83 and a fixing plate 82 disposed on the outer wall of the wear-resistant groove 83 near the bottom end of the groove. Alternatively, the fixing plate 82 can surround the outer peripheral wall of the wear-resistant groove 83, and the surface of the fixing plate 82 away from the inner cavity of the wear-resistant groove 83 is coplanar with the surface of the bottom of the wear-resistant groove 83 away from its opening. A limiting recess 6 is formed on the wear-resistant groove 83.

[0230] In some embodiments of this application, the circumferential groove wall of the wear-resistant block 8 is installed in the mounting hole 601 on the guide groove, and the groove wall of the wear-resistant groove 83 cooperates with the hole wall of the mounting hole 601; the fixing plate 82 at the end of the wear-resistant groove 83 is located on the side of the bottom of the guide groove away from its inner cavity, and the fixing plate 82 is clamped between the bottom of the guide groove and the bottom wall of the second receiving part 35. The relative displacement of the wear-resistant block 8 perpendicular to the bottom of the guide groove can be limited by the fixing of the track block 2; at the same time, the mounting hole 601 effectively limits the displacement of the wear-resistant block 8 in the plane where the bottom wall of the guide groove is located.

[0231] The recessed portion 5 that accommodates the fixing plate 82 in this embodiment is the same as in Embodiment 3, and will not be described again here.

[0232] In this embodiment, the cross section perpendicular to the tangent of the center trajectory line of the wear-resistant groove 83 is designated as the first cross section. The inner cavity cross section of the wear-resistant groove 83 defined by the first cross section has at least two points of contact with the cross section of the limiting body 722, thereby increasing the contact area between the limiting body 722 and the trajectory groove during relative movement, thus reducing stress concentration and wear. As an alternative configuration, the inner cavity cross section of the wear-resistant groove 83 defined by the first cross section has the same shape as the cross section of the limiting body 722; that is, the first cross section matches the cross section of the limiting body 722.

[0233] In one possible configuration, the inner cavity cross section of the wear-resistant groove 83 defined by the first cross section is fitted with the cross section of the limiting body 722 so that the limiting body 722 contacts the trajectory groove line, thereby further reducing stress concentration and wear.

[0234] During the rotation and opening of the door 30, the wear-resistant groove 83 and the limiting body 722 interact and move relative to each other. The limiting body 722 and the wear-resistant groove 83 are in contact at least at two points, which reduces stress concentration during the relative movement and reduces wear. As the door 30 opens, the second shaft 42 drives the elastic plunger 7 located on it to move and gradually approach the limiting recess 6. The elastic plunger 7 is inserted into the limiting recess 6, causing the door 30 to stop rotating.

[0235] In this embodiment, the wear-resistant groove 83 effectively increases the wear resistance of the track groove and the limiting recess 6, reduces the wear on the track groove and the limiting body 722, ensures their service life, and ensures the effectiveness of the cooperation between the elastic plunger 7 and the limiting recess 6, avoiding the failure of the rotating stop due to long-term wear of the elastic plunger 7 and the limiting recess 6.

[0236] Example 6

[0237] In the above embodiments, in the stopped state, the limiting plunger 71 is acted upon by the limiting recess 6, and friction is generated when the limiting plunger 71 and the limiting recess 6 move relative to each other. In the non-stop state, the limiting plunger 71 is acted upon by the guide groove throughout the entire process, and friction occurs between them, resulting in severe frictional damage. In summary, in the above embodiments, the limiting plunger 71 is subjected to frictional force throughout the entire opening process of the door 30, which leads to severe wear on the limiting plunger 71 and the guide groove, significantly shortening the service life of the components.

[0238] Reference Figures 29 to 34 In this embodiment, the limiting plunger 71 is disposed in the track groove on the door body 30, and the limiting recess 6 forms the end of the hinge that cooperates with it near the bottom of the track groove. Similarly, in this embodiment, the limiting plunger 71 is disposed in the guide groove, and the limiting recess 6 is disposed on the second shaft 42, as an example for explanation.

[0239] Specifically, the installation and setting of the track block 2 is the same as in Embodiment 3; specifically, the track block 2 is installed at the end of the door body 30 near the hinge plate 40; it can be set that the track block 2 includes a plate 20, on which a guide groove and a guide groove are formed.

[0240] A first receiving portion 34 and a second receiving portion 35 are formed at the end of the door body 30 near the hinge plate; wherein the depth of the second receiving portion 35 is less than the depth of the first receiving portion 34. In this embodiment, the two receiving portions 34 and 35 are connected in adjacent areas. A mounting surface is formed around the ends of the first receiving portion 34 and the second receiving portion 35 near the hinge.

[0241] The track block 2's plate 20 is mounted on the mounting platform, the guide groove is installed in the first receiving part 34, and the guide groove is installed in the second receiving part 35. The track block 2's plate 20 is connected to the mounting platform using screws or other connectors to fix the track block 2 to the door body 30. Because the first receiving part 34 and the second receiving part 35 have different depths, the first receiving part 34 limits the guide groove, and the second receiving part 35 limits the guide groove. Combined with the fixed connection between the track block 2's plate 20 and the mounting platform, this increases the robustness of the connection between the track block 2 and the door body 30.

[0242] In this embodiment, the bottom wall of the second accommodating part 35 is provided with a receiving cavity 36 recessed away from the hinge; the elastic plunger 7 is installed in the receiving cavity 36. The structure of the elastic plunger 7 is the same as in Embodiment 4, and will not be described again here.

[0243] In this embodiment, the elastic plunger 7 is installed at the bottom of the second receiving portion 35 on the door body 30; a recess 5 is formed on the bottom of the guide groove near the side of the second receiving portion 35 or at the position of the opening end of the second receiving portion 35 surrounding the receiving cavity 36, so that the mating part 702 on the elastic plunger 7 is installed in the recess 5. Figure 33 As shown, the recess 55 is provided on the bottom wall of the second receiving portion 35, and the recess surrounds the opening end of the receiving cavity 36. Specifically, the bottom of the guide groove mates with the bottom wall of the second receiving portion 35, and the recess 5 mates with the bottom of the guide groove to clamp the mating member 702 between the two. The position of the elastic plunger 7 can be further defined by fixing the track block 2.

[0244] A mounting hole 601 is provided on the bottom wall of the guide groove at a position corresponding to the receiving cavity 36. The limiting protrusion 7272 extends into the inner cavity of the guide groove through the mounting hole 601. In the non-stop state, in the direction perpendicular to the bottom of the guide groove, the distance between the limiting protrusion 72 and the hinge plate is less than the distance between the end of the limiting recess 6 located at the end of the second shaft away from the hinge plate and the hinge plate, so as to ensure that the limiting protrusion 72 interacts with the limiting recess 6 when they come into contact, so that the limiting protrusion 72 falls into the limiting recess 6 to stop the rotation.

[0245] In the non-stop state, under the action of the elastic member 71, the second limiting plate abuts against the first limiting plate, and the limiting post 721 of the limiting protrusion 72 passes through the cavity opening of the receiving cavity 701 and through the mounting hole 601, so that the limiting body 722 extends into the guide groove.

[0246] As the door 30 opens, the second shaft 42 gradually approaches the limiting protrusion 7272. After the second shaft 42 contacts the limiting protrusion 72, the door 30 continues to open. The second shaft and the limiting protrusion 72 interact, and the limiting protrusion 72 is initially moved towards the elastic member 71 under the force, compressing the elastic member 71. As the limiting protrusion 72 gradually approaches the limiting recess 6, the force exerted by the second shaft on the limiting protrusion 72 decreases. Under the action of the restoring force, the elastic member 71 pushes the limiting protrusion 72 towards the second shaft. When the limiting protrusion 72 corresponds to the limiting recess 6 located on the second shaft, the limiting protrusion 72 falls into the limiting recess 6. At this time, the limiting protrusion and the limiting recess 6 cooperate to restrict the relative movement between the second shaft and the guide groove, causing the door 30 to stop in the current position.

[0247] It should be noted that in this embodiment, the length of the elastic element 71 in the stopped state is less than the length of the elastic element 71 in the non-stop state.

[0248] In this embodiment, the elastic plunger 7 is disposed on the door body 30. The limiting protrusion 72, through the setting of the limiting post 721 and the limiting body 722, ensures that the portion of the limiting body 722 extending into the guide groove is sufficiently long, guaranteeing the engagement between the limiting protrusion 72 and the limiting recess 6. Furthermore, through this embodiment, during the entire opening process of the door body 30, in the non-stop state, the limiting protrusion 72 is under the action of its own elastic plunger 7 structure, and is not subject to other forces, thus avoiding friction. Friction only occurs during the stop state and before and after the stop state, when the limiting protrusion 72 engages with the limiting recess 6 and when the second shaft contacts the limiting protrusion 72. In summary, this embodiment significantly shortens the range of friction experienced by the limiting protrusion 72 during the opening and closing process of the door body 30, completely avoiding wear in the non-stop state and significantly reducing wear on the limiting protrusion 72.

[0249] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0250] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, It includes: The housing has a first body sidewall and a second body sidewall that are disposed opposite to each other; The door has a front wall that is away from the box when the door is closed, and a side wall that is connected to the front wall and close to the side wall of the first body; A hinge assembly connecting the door and the housing to allow the door to rotate relative to the housing; the hinge assembly includes: The guide groove and the guide channel are located at the end of the door body near the side wall of the first body; A first shaft and a second shaft are fixed to the housing; the first shaft mates with the guide groove, and the second shaft mates with the guide groove. An elastic plunger is disposed on at least one of the guide groove and the guide channel; A limiting recess is provided at the end of a first shaft or a second shaft corresponding to a guide groove or guide groove with an elastic plunger; During the opening of the door, the first shaft moves relative to the guide groove; the second shaft moves relative to the guide groove. The elastic plunger includes a support member, an elastic member, and a limiting protrusion; The support member is provided with a receiving cavity with an open end, and the limiting protrusion is located at the open end of the receiving cavity; One end of the elastic element is connected to the bottom of the cavity, and the other end is connected to the limiting protrusion. When the elastic plunger is opposite to the limiting recess, the limiting protrusion is ejected by the elastic element and locked into the limiting recess; The distance between the limiting protrusion and the hinge plate is less than the distance between the limiting recess located at the end of the first shaft or the second shaft away from the hinge plate and the hinge plate. When the elastic plunger is engaged in the limiting recess, the door body stops rotating; The door body is equipped with a track block, which has a guide groove and a guide slot. The door body is provided with a first receiving part and a second receiving part at the end near the hinge plate. The guide groove is installed in the first receiving part and the guide groove is installed in the second receiving part. The bottom wall of the first or second accommodating part is provided with a receiving cavity recessed to the side away from the first or second axis; the support member is installed in the receiving cavity, and the limiting protrusion extends into the guide groove installed in the first accommodating part or the guide groove installed in the second accommodating part; A mating part is formed on the outer wall of the open end of the support member. When the support member is installed in the receiving cavity, the mating part is clamped between the bottom of the guide groove or guide channel and the bottom wall of the first receiving part or the second receiving part.

2. The refrigerator according to claim 1, characterized in that: The limiting protrusion has a limiting post and a limiting body; the limiting post is at least partially housed in the receiving cavity and is located on the side of the elastic member near the opening of the receiving cavity, and the limiting body is located at the end of the limiting post away from the elastic member.

3. The refrigerator according to claim 2, characterized in that: A first limiting portion is formed on the inner wall of the receiving cavity of the support member near its opening end; A second limiting portion is formed on the outer peripheral wall of the end of the limiting post away from the limiting body; The second limiting part is located inside the receiving cavity and is restricted by the first limiting part to the side of the first limiting part near the elastic member; When the elastic plunger is misaligned with the limiting recess, the first limiting portion and the second limiting portion cooperate. When the elastic plunger is engaged in the limiting recess, the elastic element is compressed, and the first limiting portion and the second limiting portion separate.

4. The refrigerator according to claim 2, characterized in that: When the limiting protrusion is engaged in the limiting recess, the distance between the end face of the limiting post near the elastic member and the open end face of the support member is denoted as T1; the total length of the limiting protrusion is denoted as T0. Where T1:T0 ∈ [0.4, 0.6] for any value.

5. The refrigerator according to claim 4, characterized in that: The limiting body is in the shape of a spherical cap.

6. The refrigerator according to claim 5, characterized in that: The radius of the limiting body of the spherical cap is denoted as R; where R: T0∈[0.25, 0.4] any value.

7. The refrigerator according to claim 1, characterized in that: A recess is formed on the bottom of the guide groove near the side of the second receiving portion or on the second receiving portion surrounding the opening end of the receiving cavity; the mating part is installed in the recess. A recess is formed on the bottom of the guide groove near the first receiving portion or on the first receiving portion surrounding the opening end of the receiving cavity; the mating component is installed in the recess.

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