refrigerator

Abstract

The present invention proposes a refrigerator, which includes a box body, a hinge arranged on the box body, and a door body; the hinge has a first hinge axis and a second hinge axis; the door body has a door front wall, a door side wall, a first track groove and a second track groove; the first hinge axis cooperates with the first track groove, and the second hinge axis cooperates with the second track groove, so that the door body can move inward while rotating; the center track line of the first track groove is arc-shaped, and the center track line of the second track groove is composed of at least one arc; the first track groove and the second track groove are both recessed toward the side away from the door front wall and the door side wall; the first track groove is located on the side of the second track groove close to the door front wall; along the direction from the side of the door body away from the door side wall to the door side wall, the distance between the first track groove and the door front wall first increases and then decreases, so that the door body moves forward a certain distance when it is opened; the refrigerator of the present invention ensures that the door body will not exceed or exceed too much beyond the side of the box body when it is opened.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, in particular to a refrigerator. Background Art

[0002] In the related art, the hinge structure of the refrigerator door is mostly a single-axis type, and the door body rotates around the hinge axis through the cooperation between the hinge axis and the door body's shaft sleeve. When the door body of this type of hinge structure is opened, the corner of the door body will extend beyond the side of the box body.

[0003] For built-in refrigerators, the refrigerator is generally placed in a cabinet. It is required that when the door is opened to 90 degrees, the corners of the door body cannot exceed the size of the cabinet too much, which limits the use of the refrigerator. Summary of the Invention

[0004] The present invention solves one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the present application aims to provide a refrigerator whose hinge structure ensures that the door does not extend beyond or extends too far beyond the side of the refrigerator body when opened.

[0006] The refrigerator according to the present application comprises:

[0007] A box body defines a heat-insulated storage room; the box body includes a first side wall and a second side wall disposed opposite to each other;

[0008] a hinge disposed on the box body and close to the first body side wall; the hinge comprises a first hinge axis and a second hinge axis located on a side of the first hinge axis away from the first body side wall;

[0009] The door body comprises a door front wall away from the box body when the door body is closed, and a door side wall close to the hinge and connected to the door front wall;

[0010] The first track groove and the second track groove are both provided at the end of the door body close to the hinge; the first hinge shaft cooperates with the first track groove, and the second hinge shaft cooperates with the second track groove, so that the door body can move a distance toward the side wall of the second body while rotating; wherein,

[0011] The center trajectory line of the first trajectory groove is recorded as the first trajectory line S, and the center trajectory line of the second trajectory groove is recorded as the second trajectory line K; the first trajectory line S is in the shape of an arc, and the second trajectory line K is composed of at least one arc; the centers of the arcs contained in the second trajectory line K are all located on the side close to the door front wall and the door side wall; the center O of the first trajectory line S is located on the side close to the door front wall, and the first trajectory line S is located on the side of the second trajectory line K close to the door front wall; along the direction from the side of the door body away from the door side wall to the door side wall, the distance between the point on the first trajectory line S and the door front wall first increases and then decreases, so that the door body moves a certain distance to the side away from the box body when it is opened.

[0012] In some embodiments of the refrigerator of the present application, the circle where the arc included in the second trajectory line K is located contains the circle O where the first trajectory line S is located.

[0013] In some embodiments of the refrigerator of the present application, the center O of the first trajectory line S and the center of the arc included in the second trajectory line K do not coincide with each other.

[0014] In some embodiments of the refrigerator of the present application, the second trajectory line K includes a guide starting point Q0 and a first guide point Q1, wherein the first guide point Q1 is located on a side of the guide starting point Q0 away from the door front wall and close to the door side wall; the second trajectory line K extends from the guide starting point Q0 to the first guide point Q1 along a circular arc-shaped first trajectory arc K1;

[0015] The first trajectory line S includes a positioning starting point P0 away from the door side wall and a first positioning point P1 close to the door side wall.

[0016] In some embodiments of the refrigerator of the present application, the second trajectory line K includes a second guide point Q2, and the first guide point Q1 is located between the guide starting point Q0 and the second guide point Q2; the second trajectory line K extends from the first guide point Q1 along the circular second trajectory arc K2 to the second guide point Q2; the radius R1 of the first trajectory arc K1 is not equal to the radius R2 of the second trajectory arc K2.

[0017] In some embodiments of the refrigerator of the present application, the first trajectory arc K1 and the second trajectory arc K2 are tangent to each other at the first guide point Q1.

[0018] In some embodiments of the refrigerator of the present application, along the direction from the guide starting point Q0 to the first guide point Q1, the distance G from the point on the second trajectory line K to the door side wall gradually decreases.

[0019] In some embodiments of the refrigerator of the present application, the distance between the positioning starting point P0 and the door front wall is recorded as D1, and the distance between the first positioning point P1 and the door front wall is recorded as D2;

[0020] The distance between the guide starting point Q0 and the front wall of the door is recorded as Z1, and the distance between the first guide point Q1 and the front wall of the door is recorded as Z2, Z1<D2<D1<Z1.

[0021] In some embodiments of the refrigerator of the present application, ∠P0OP1=90°.

[0022] In some embodiments of the refrigerator of the present application, when the door body is in a closed state, the center axis of the first hinge axis is located at the positioning starting point P0 of the first trajectory line S, and the center axis of the second hinge axis is located at the guide starting point Q0 of the second trajectory line K.

[0023] Compared with the prior art, the advantages and positive effects of the present invention are:

[0024] The present invention provides a refrigerator, which includes a box body with a first side wall and a second side wall arranged opposite to each other, a hinge close to the first side wall, and a door body; the hinge has a first hinge axis and a second hinge axis; the door body has a door front wall away from the box body when the door body is closed, a door side wall connected to the door front wall, a first track groove and a second track groove provided on the door body; the first hinge axis cooperates with the first track groove, and the second hinge axis cooperates with the second track groove, so that the door body can move a distance toward the second side wall while rotating; the center track line of the first track groove is recorded as the first track line S, and the center track line of the second track groove is recorded as The second trajectory line K and the first trajectory line S are in an arc shape, and the second trajectory line K is composed of at least one arc; the centers of the arcs contained in the second trajectory line K are all located on its side close to the door front wall and the door side wall; the center O of the first trajectory line S is located on its side close to the door front wall, and the first trajectory line S is located on the side of the second trajectory line K close to the door front wall; along the direction from the side of the door body away from the door side wall to the door side wall, the distance between the point on the first trajectory line S and the door front wall first increases and then decreases, so that the door body moves a certain distance toward the side away from the box body when it is opened; the refrigerator of the present invention ensures that the door body does not extend beyond or extend too much beyond the side of the box body when it is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 is a perspective view of a refrigerator of the present invention;

[0027] Figure 2 is a top view of the refrigerator of the present invention;

[0028] Figure 3 yes Figure 2 Schematic diagram of the local structure;

[0029] Figure 4 Schematic diagram of the exploded structure of the hinge at the upper right corner of the refrigerator of the present invention;

[0030] Figure 5 1 is a diagram showing the relative positions of the first track groove and the second track groove of the refrigerator according to the first embodiment of the present invention;

[0031] Figure 6 1 is a diagram showing the relative positions of the first hinge shaft, the first track groove, the second hinge shaft, and the second track groove of the refrigerator according to the first embodiment of the present invention;

[0032] Figure 7 1 is a schematic diagram of the movement of the first hinge shaft and the second hinge shaft of the refrigerator according to the first embodiment of the present invention;

[0033] Figure 8 This is a view of the hinge of the refrigerator in the first embodiment of the present invention when the door is in a closed state;

[0034] Figure 9 This is a view of the hinge of the refrigerator in Example 1 of the present invention when the door is opened less than 90 degrees;

[0035] Figure 10 This is a view of the hinge of the refrigerator in Example 1 of the present invention when the door is opened to 90 degrees;

[0036] Figure 11 Schematic diagram of the movement of the first hinge shaft and the second hinge shaft of the second embodiment of the refrigerator of the present invention;

[0037] Figure 12 This is a view of the hinge of the refrigerator in the second embodiment of the present invention when the door is in a closed state;

[0038] Figure 13 This is a view of the hinge of the refrigerator in the second embodiment of the present invention when the door is opened to 90 degrees;

[0039] Figure 14 The door of the refrigerator in the second embodiment of the present invention is opened to A. max View at the hinge when >90°;

[0040] Figure 15 1 is a diagram showing various parameters at the hinge when the door of the refrigerator according to the third embodiment of the present invention is in a closed state;

[0041] Figure 16 1 is a view showing various parameters at the hinge when the door of the refrigerator of embodiment 3 of the present invention is opened at an angle m∈(0, n];

[0042] Figure 17 1 is a diagram showing the parameters of the hinge when the third embodiment of the refrigerator of the present invention is opened at an angle m∈[n, 90°];

[0043] Figure 18 This is a view showing various parameters at the hinge when the door of the refrigerator of Example 3 of the present invention is opened to 90 degrees;

[0044] Figure 19 Schematic diagram of the movement of the first hinge axis and the second hinge axis of the fourth embodiment of the refrigerator of the present invention;

[0045] Figure 20 This is a view of the hinge of the refrigerator in the fourth embodiment of the present invention when the door is in a closed state;

[0046] Figure 21 This is a view of the hinge of the refrigerator in the fourth embodiment of the present invention when the door is opened to 90 degrees;

[0047] Figure 22 The door of the refrigerator in the fourth embodiment of the present invention is opened to A max View at the hinge when >90°;

[0048] Figure 23 Schematic diagram of the movement of the first hinge axis and the second hinge axis of the fifth embodiment of the refrigerator of the present invention;

[0049] Figure 24 This is a view of the hinge of the refrigerator in the fifth embodiment of the present invention when the door is in a closed state;

[0050] Figure 25 This is a view of the hinge of the refrigerator in the fifth embodiment of the present invention when the door is opened to 90 degrees;

[0051] Figure 26 The door of the refrigerator in the fifth embodiment of the present invention is opened to A max View at the hinge when angle >90°.

[0052] In the above figures: box body 10; storage room 20; cabinet 100; door body 30; door front wall 31; door side wall 32; side edge 33; hinge plate 40; connecting part 401; extension part 402; first hinge axis 41; second hinge axis 42; positioning center axis P; guide center axis Q; first track groove 50; first track line S; positioning starting point P0; first positioning point P1; second positioning point P2; second track groove 60; second track line K; first track arc K1; second track arc K2; guide starting point Q0; first guide point Q1; second guide point Q2. DETAILED DESCRIPTION

[0053] The present invention is described in detail below by way of exemplary embodiments, but it should be understood that elements, structures, and features of one embodiment may be beneficially combined in other embodiments without further description.

[0054] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0055] The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of such features.

[0056] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0057] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. In the accompanying drawings, the side of the refrigerator facing the user when in use is defined as the front side, and the side opposite thereto is defined as the rear side.

[0058] Example 1

[0059] Reference Figure 1 The refrigerator includes a cabinet 10 having a storage chamber 20 , a door 30 connected to the cabinet 10 to open and close the storage chamber 20 , and a refrigeration device supplying cool air to the storage chamber 20 .

[0060] Specifically, the refrigeration device may include an evaporator, a compressor, a condenser, and an expansion device, and may generate cold air by utilizing the latent heat of evaporation of a refrigerant. The cabinet 10 includes an inner container defining a storage chamber 20, an outer shell connected to the outer side of the inner container to form the appearance of a refrigerator, and an insulating layer disposed between the inner container and the outer shell to insulate the storage chamber 20.

[0061] The housing 10 defines a plurality of storage compartments 20. In this embodiment, the plurality of storage compartments 20 include a refrigerator compartment and a freezer compartment located below the refrigerator compartment. As an example, the refrigerator compartment is configured to store food in a refrigerated mode by maintaining the air temperature at approximately 0 to 5°C; the freezer compartment is configured to store food in a frozen mode by maintaining the air temperature at 0 to -30°C. It should be noted that the configuration of the plurality of storage compartments 20 in a refrigerator is not limited to the above example.

[0062] The front end of the storage chamber 20 is formed with an access opening for placing food into or taking food out of the storage chamber 20; a rotatable door 30 is provided on the box body 10 to open or close the access opening of the storage chamber 20. Specifically, the door 30 is rotatably connected to the box body 10 by a hinge located at the top and a hinge located at the bottom.

[0063] The housing 10 includes a first sidewall and a second sidewall (i.e., the left and right sides of the housing 10) that are disposed opposite each other. The hinge is disposed on the housing 10 and is adjacent to the first sidewall. The door 30 includes a front wall 31 that is spaced away from the housing 10 when the door 30 is closed, and a side wall 32 that is adjacent to the hinge and connected to the front wall 31. For example, when the hinge is located on the right side of the housing 10, the right side of the door 30 is the side wall 32; when the hinge is located on the left side of the housing 10, the left side of the door 30 is the side wall 32. The front wall 31 and the side wall 32 of the door 30 intersect to form a side edge 33.

[0064] Reference Figures 2 to 5 The hinge has a first hinge axis 41 and a second hinge axis 42 located on the side of the first hinge axis 41 away from the side wall of the first body; the end of the door body 30 close to the hinge is provided with a first track groove 50 and a second track groove 60; the first hinge axis 41 is adapted to the first track groove 50, and the second hinge axis 42 is adapted to the second track groove 60. During the process of rotating the door body 30 to open or close, the first hinge axis 41 moves relative to the first track groove 50, and the second hinge axis 42 moves relative to the second track groove 60.

[0065] It should be noted that the embodiments of this application utilize the aforementioned arrangement of the first hinge axis 41 and the second hinge axis 42 being located on the hinge, and the first and second track grooves 50 and 60 being located on the door body 30 as an example. However, the arrangement of the first hinge axis 41, the second hinge axis 42, the first track groove 50, and the second track groove 60 is not limited to the aforementioned arrangement on or within the door body 30. The first hinge axis 41 and the first track groove 50 can be arranged on the door body 30 and the other on the hinge. The arrangement of the second hinge axis 42 and the second track groove 60 is similar. The principles are the same, differing only in their placement. This is a common arrangement and will not be further described.

[0066] The hinge includes a hinge plate 40 fixedly connected to the box body 10, and the hinge plate 40 includes: a connecting portion 401 connected to the box body 10, and an extending portion 402 extending forward from the connecting portion 401 and having a horizontal plate shape. The connecting portion 401 can be fastened to the top wall of the box body 10 by fasteners such as screws, pins and bolts.

[0067] Specifically, the hinge at the upper end of the door body 30 includes a hinge plate 40 connected to the upper end of the housing 10, with a first hinge shaft 41 and a second hinge shaft 42 connected to the hinge plate 40 to form a rotation axis. The hinge plate 40, the first hinge shaft 41, and the second hinge shaft 42 can be formed integrally, but the hinge plate 41, the first hinge shaft 41, and the second hinge shaft 42 can be provided separately and assembled together. The first hinge shaft 41 and the second hinge shaft 42 are formed on the extension portion 402 and extend vertically downward.

[0068] For the hinge at the lower end of the door body 30 , the connecting portion 401 is connected to the front end surface of the box body 10 . A first hinge shaft 41 and a second hinge shaft 42 extend upward on the hinge plate 40 .

[0069] Corresponding to the position of the hinge plate 40, a first track groove 50 and a second track groove 60 are provided at the upper and lower ends of the door body 30. The two first track grooves 50 at the upper and lower ends of the door body 30 are vertically aligned, and the two second track grooves 60 are vertically aligned. That is, when projected onto the plane of the top wall of the housing 10, the centerlines of the two first track grooves 50 and the two second track grooves 60 at the upper and lower ends of the door body 30 completely overlap.

[0070] In this embodiment, continue to refer to Figure 2 , the plane on the side of the box body 10 close to the hinge plate 40 is defined as the reference plane M. The refrigerator is housed in the cabinet 100. The side of the reference plane M close to the cabinet 100 is the outer side, and the opposite side close to the storage room 20 is the inner side. When the refrigerator is placed in the cabinet 100 for use, in order to prevent factors such as uneven ground and deformation of the cabinet 100, when the cabinet 100 is set in size, the distance α between the cabinet 100 and the side of the refrigerator (the side wall of the first body, i.e., the reference plane M) is 5 mm. In order to ensure that the door body 30 of the refrigerator opens normally, the side edge 33 of the door body 30 cannot exceed too much from the side of the box body 10 (reference plane M) during the rotation process, so as to avoid the side edge 33 colliding with the cabinet 100 and causing the door body 30 to fail to open normally.

[0071] To meet the above requirements, the door body 30 needs to be able to move inward during rotation so that the side edge 33 does not extend too far beyond the side surface (reference plane M) of the box body 10. For example, if the chain plate 40 is located on the right side of the door body 30 (in this example, the left side wall of the box body 10 is the first body side wall), the inner side is the left side, that is, the door body 30 needs to be able to move to the left; for example, if the hinge plate 40 is located on the door body 30, the inner side is the right side, that is, the door body 30 needs to be able to move to the right.

[0072] In this embodiment, the first trajectory groove 50 is arc-shaped and includes only one arc groove; the second trajectory groove 60 includes at least one arc groove; in this embodiment of the present invention, the second trajectory groove includes one or two connected arc grooves. The first hinge shaft 41 cooperates with the first trajectory groove 50, and the second hinge shaft 42 cooperates with the second trajectory groove 60. The center trajectory line of the first trajectory groove 50 is recorded as the first trajectory line S, and the center trajectory line of the second trajectory groove 60 is recorded as the second trajectory line K; the shape of the first trajectory groove 50 and the second trajectory groove 60 formed by the arc grooves is defined, and the first trajectory line S is arc-shaped, and the second trajectory line K includes one or two arc segments. The center of the arc included in the second trajectory line K is located on the side close to the door front wall 31 and the door side wall 32, that is, the second trajectory line K is recessed toward the side away from the door front wall 31 and the door side wall 32. The center O of the first trajectory line S is located on the side close to the door front wall 31, and the first trajectory line S is located on the side of the second trajectory line K close to the door front wall 31, so that the door body 30 can move a distance inward (close to the second body side wall) while rotating; thereby avoiding interference between the door body 30 and the cabinet 100 when it is opened.

[0073] Since the first track groove 50 and the first hinge shaft 41, as well as the second track groove 60 and the second hinge shaft 42, are in a relative motion relationship, if the door body 30 is opened, with the first track groove 50 and the second track groove 60 as stationary reference points, it is equivalent to the first hinge shaft 41 moving within the first track groove 50 and the second hinge shaft 42 moving within the second track groove 60. For the sake of convenience, this application uses the first track groove 50 and the second track groove 60 as reference points, and describes the first hinge shaft 41 and the second hinge shaft 42 moving relative to the reference points.

[0074] In addition, in this embodiment, the central axis of the first hinge axis 41 is referred to as the positioning central axis P, and the central axis of the second hinge axis 42 is referred to as the guiding central axis Q. Figure 5-10 As shown, the movement of the first hinge shaft 41 along the first track groove 50 is equivalent to the movement of the positioning center axis P along the first track line S, and the movement of the second hinge shaft 42 along the second track groove 60 is equivalent to the movement of the guide center axis Q along the second track line K, so that the door body 30 can move a distance inward (close to the second body side wall) while rotating, thereby avoiding interference between the door body 30 and the cabinet 100 when it is opened.

[0075] like Figures 6-10 As shown, as an practicable method of the present application, the second track groove 60 is configured as a circular arc groove, that is, the second track groove 60 and the first track groove 50 are both in the shape of a circular arc. Then the second track line K includes the circular arc-shaped first track arc K1. In this configuration, the circle O1 where the first track arc K1 is located contains the circle O where the first track line S is located. And the center O of the first track line S and the center O1 of the first track arc K1 do not coincide; in addition, as a configurable method, the radius of the arc where the first track line S is located is recorded as R, and the radius of the arc where the first track arc K1 is located is recorded as R1, R1>R. It can be configured that R1: R∈[4,6]; in this embodiment, R1: R=5. The above configuration of the first track groove 50 and the second track groove 60 fully utilizes the thickness of the door body 30 and avoids increasing the thickness of the door body 30 due to the need to set the first track groove 50 and the second track groove 60 so that the door body 30 moves inward when opened.

[0076] The first trajectory line S includes a positioning starting point P0 away from the door side wall 32 and a first positioning point P1 close to the door side wall 32; the distance between the positioning starting point P0 and the door front wall 31 is recorded as D1, and the distance between the first positioning point P1 and the door front wall 31 is recorded as D2.

[0077] The first trajectory arc K1 includes a guide starting point Q0 away from the door side wall 32 and a first guide point Q1 close to the door side wall 32; the first guide point Q1 is located on the side of the guide starting point Q0 away from the door front wall 31 and close to the door side wall 32, and the second trajectory line K extends from the guide starting point Q0 to the side away from the door front wall 31 and the door side wall 32 along the first trajectory arc K1 to the first guide point Q1.

[0078] As the guide starts at the guide point Q0 and moves toward the first guide point Q1, the distance G between a point on the first trajectory arc K1 and the door sidewall 32 gradually decreases. Specifically, as the guide starts at the guide point Q0 and moves toward the first guide point Q1, the circular first trajectory arc K1 gradually extends away from the door front wall 31 and toward the door sidewall 32.

[0079] In addition, the distance between the guide starting point Q0 and the door front wall 31 is recorded as Z1, and the first end point Q eThe distance from the door front wall 31 is recorded as Z2. As a configurable method, Z1<D2<D1<Z1. That is, the first positioning point P1 is located on the side of the positioning starting point P0 close to the door side wall 32 and the door front wall 31. The first track groove 50 extends from one end away from the door side wall 32 to the direction close to the door side wall 32 and the door front wall 31, and the second track groove 60 extends from one end away from the door side wall 32 to the direction away from the door front wall 31 and close to the door side wall 32. The above setting enables the second track groove 60 to effectively limit the movement of the second hinge shaft 42 to cooperate with the movement of the first hinge shaft 41 in the first track groove 50, thereby causing the door body 30 to move inward a certain distance during the opening process of the door body 30, and ensuring the stability of the door body 30 rotating open.

[0080] like Figure 6 As shown, when the door body 30 is in a closed state, the center axis of the first hinge axis 41 (positioning center axis P) is located at the positioning starting point P0 of the first trajectory line S, and the center axis of the second hinge axis 42 (guide center axis Q) is located at the guide starting point Q0 of the first trajectory arc K1.

[0081] Combine Figure 5 At this time, the vertical distance between the first hinge axis 41 and the second hinge axis 42 in the direction perpendicular to the door front wall 31 is recorded as L1=D1-Z1, wherein 2.5mm≤L1≤10mm, and the horizontal distance L2 between the first hinge axis 41 and the second hinge axis 42 in the direction perpendicular to the door side wall 32 satisfies 7.5mm≤L2≤30mm. In the current example, L1=5mm, L2=15mm are set, and the thickness of the door body 30 is between 44mm and 53mm, so that the corner of the door body 30 always exceeds the side of the box body 10 by a small distance during the opening process, specifically less than 3mm.

[0082] In some embodiments of the present application, it can be set that ∠P0OP1=90°, that is, the first trajectory line S is a 90° arc.

[0083] In some embodiments, reference Figure 6 When the door body 30 is in a closed state, there is a certain gap δ>0 between the second hinge shaft 42 and the end wall of the second track groove 60, so that when the door body 30 is thrown toward the box body 10 with force, the second hinge shaft 42 is prevented from contacting the first starting end of the second track groove 60 and the door body 30 is bounced open.

[0084] See also Figure 7-10 In this embodiment, the first trajectory line S is a 90° arc with a radius of R, and the second trajectory line K includes a first arc-shaped arc K1 with a radius of R1. max =90°; and the door 30 opens to a maximum angle A max =90°, such as Figure 10As shown, the center axis (positioning center axis P) of the first hinge axis 41 is located at the first positioning point P1; the center axis (guide center axis Q) of the second hinge axis 42 is located at the first guide point Q1.

[0085] In addition, when the door body 30 is in a closed state, the center axis of the first hinge axis 41 (positioning center axis P) is located at the positioning starting point P0 of the first trajectory line S, and the center axis of the second hinge axis 42 (guide center axis Q) is located at the guide starting point Q0 of the first trajectory arc K1.

[0086] In summary, when the door body 30 is rotated from the closed state (0°) to A max =90°, the first hinge shaft 41 moves from the positioning starting point P0 to the first positioning point P1 along the first trajectory line S relative to the first trajectory groove 50. Simultaneously, the second hinge shaft 42 moves from the guiding starting point Q0 to the first guiding point Q1 along the first trajectory arc K1 relative to the second trajectory groove 60. That is, during the process of the door body 30 rotating from the closed state (0°) to the 90° position, the first hinge shaft 41 moves in a circular arc along the first trajectory groove 50 throughout the entire process; and the second hinge shaft 42 moves in a circular arc along the second trajectory groove 60 throughout the entire process.

[0087] In this embodiment, Figure 7 As shown, using the first track groove 50 and the second track groove 60 as reference points, the line connecting the center axis of the first hinge shaft 41 (positioning center axis P) and the center axis of the second hinge shaft 42 (guide center axis Q) rotates 90° clockwise and moves outward a certain distance (from P0Q0 to P1Q1); that is, the hinge and the door body rotate 90° relative to each other. In other words, if the first hinge shaft 41 and the second hinge shaft 42 are used as reference points, the first track groove 50 and the second track groove 60 as a whole rotate 90° counterclockwise and move inward a certain distance. In this embodiment, the first track groove 50 and the second track groove 60 are set on the door body 30. That is, the door body 30 opens 90° relative to the hinge fixed to the cabinet body and moves inward a certain distance to prevent the door body 30 from touching the cabinet 100 during opening.

[0088] In this embodiment, the first positioning point P1 is closer to the door side wall 32 than the positioning starting point P0, and the first trajectory line S extends along an arc toward the door side wall 32; in this way, the first hinge axis 41 moves toward the door side wall 32, which is equivalent to the door body 30 with the first trajectory groove 50 moving a certain distance away from the door side wall 32 (inward). The inward movement of the door body 30 can prevent the side edge 33 from extending too much beyond the side of the box body 10 and touching the cabinet 100.

[0089] The first guide point Q1 is farther from the door front wall 31 and closer to the door side wall 32 than the guide starting point Q0. The first track arc K1 extends along the arc in the direction away from the door front wall 31 and closer to the door side wall 32, so that the second track groove 60 effectively limits the movement of the second hinge shaft 42 to cooperate with the movement of the first hinge shaft 41 in the first track groove 50, thereby causing the door body 30 to move inward a certain distance during the opening process of the door body 30 and ensuring the stability of the door body 30 when it rotates to open. Figure 9 As shown, when the door body 30 is opened from a closed state to 90°, the first hinge shaft 41 and the second hinge shaft 42 both move along a circular arc, and the door body 30 always moves inward.

[0090] In this embodiment, if Figure 10 As shown, when the door body 30 is in a 90° open state, the door front wall 31 or side edge 33 of the door body 30 has a gap θ with the first body side wall (reference plane M) of the box body 10, that is, the door front wall 31 of the door body 30 is located on the inner side of the reference plane M and the distance from the door front wall 31 to the reference plane M is θ>0, so that the door body 30 can continue to open at a small angle without interfering with the cabinet 100.

[0091] In this embodiment, the door 30 is opened from the closed state to the maximum angle A. max =90°, the position of the first hinge axis 41 within the first track groove 50 and the position of the second hinge axis 42 within the second track groove 60 are constantly changing, without sudden force changes, and the movement is smoother. Moreover, the dual-axis movement of the present application does not have sudden changes in motion state and does not produce changes in acceleration. Therefore, the first track groove 50 and the second track groove 60 are less susceptible to wear than the related art.

[0092] In this embodiment, during the entire process of opening the door body 30, the first hinge shaft 41 moves unidirectionally from one end of the first track groove 50 to the other end, and the second hinge shaft 42 moves unidirectionally from one end of the second track groove 60 to the other end. The movement process will not retract, making the door body 30 open more smoothly.

[0093] Example 2

[0094] In this embodiment, in order to allow the refrigerator to be opened to a greater angle when not embedded in the cabinet 100, the maximum opening angle of the refrigerator is set to A. max >90°; it opens from closed state to A max The process is divided into two stages. The first stage is opening from the closed state to 90°, and the second stage is opening from 90° to A max >90°.

[0095] In this embodiment, refer to Figure 11-14As shown, what is different from the first embodiment is that the second trajectory line K of the second trajectory groove 60 has a second guide point Q2; wherein, the first guide point Q1 is located between the guide starting point Q0 and the second guide point Q2. The second trajectory line K extends from the first guide point Q1 along the arc to the second guide point Q2. In this embodiment, the arc connecting the first guide point Q1 and the second guide point Q2 is recorded as the second trajectory arc K2. That is, in this embodiment, the second trajectory line K includes two arcs with different radii. Specifically, the second trajectory line K includes the first trajectory arc K1 and the second trajectory arc K2, and the first trajectory arc K1 and the second trajectory arc K2 are connected at the first guide point Q1; wherein, the radius R1 of the first trajectory arc K1 is greater than the radius R2 of the second trajectory arc K2. In addition, the circle O2 where the second trajectory arc K2 is located contains the circle O where the first trajectory line S is located; that is, the circle where the arc contained in the second trajectory line K is located contains the circle O where the first trajectory line S is located. In addition, in this embodiment, the center of the second trajectory arc K2 is the first positioning point P1, and the radius R2 of the first trajectory arc K2 is P1Q1.

[0096] As a configurable manner, the circle O1 where the first trajectory arc K1 is located and the circle O1 where the second trajectory arc K2 is located are tangent at the first guide point Q1, so that the second trajectory line K is smooth as a whole.

[0097] In this embodiment, Figure 12 As shown, when the door body 30 is in the closed state, the center axis of the first hinge axis 41 (positioning center axis P) is located at the positioning starting point P0 of the first track line S, and the center axis of the second hinge axis 42 (guide center axis Q) is located at the guide starting point Q0 of the second track line K. Figure 13 As shown, the door 30 is opened to A max =90°, the center axis (positioning center axis P) of the first hinge axis 41 is located at the first positioning point P1; the center axis (guide center axis Q) of the second hinge axis 42 is located at the first guide point Q1.

[0098] like Figure 14 As shown, the door 30 is opened to A max When the angle is greater than 90°, the center axis of the first hinge axis 41 (positioning center axis P) is located at the first positioning point P1; the center axis of the second hinge axis 42 (guide center axis Q) is located at the second guide point Q2.

[0099] The door body 30 is rotated from the closed state to open to A max The process of >90° is described in detail:

[0100] Phase 1

[0101] like Figure 13As shown, during the process of rotating the door body 30 from the closed position (0°) to 90°, the center axis of the first hinge shaft 41 (positioning center axis P) moves along the first trajectory line S relative to the first track groove 50 to the first positioning point P1; and the center axis of the second hinge shaft 42 (guide center axis Q) moves along the second trajectory line K relative to the second track groove 60 to the first guide point Q1. The movement process is the same as that described in the first embodiment, and the specific process is not repeated here.

[0102] Phase II

[0103] Reference Figure 14 When the door 30 continues to open from 90° to A max When the door body 30 is opened from 90° to A, the first hinge shaft 41 rotates around its own central axis (positioning central axis P) relative to the first track groove 50 at the first positioning point P1, and the second hinge shaft 42 moves from the first guide point Q1 to the second guide point Q2 along the second track arc K2 relative to the second track groove 60. max When the angle is greater than 90°, the second hinge shaft 42 rotates about the central axis (positioning central axis P) of the first hinge shaft 41 .

[0104] The second guide point Q2 is further away from the door front wall 31 and closer to the door side wall 32 than the first guide point Q1. The second trajectory line K extends from the first guide point Q1 to the second guide point Q2 in a direction away from the door front wall 31 and closer to the door side wall 32. The above arrangement causes the side edge 33 of the door body 30 to move forward and inward for a certain distance during rotation. max During the process of >90°, the first hinge shaft 41 is located at one end of the first track groove 50 close to the door side wall 32, and only rotates around its own center axis (positioning center axis P); the second hinge shaft 42 moves in a circular arc along the second track arc K2 relative to the second track groove 60.

[0105] In the above embodiment, Figure 11 As shown ( Figure 11The middle dotted line represents the extension line of the first track arc K1, for comparison with the second track arc K2). Taking the first track groove 50 and the second track groove 60 as reference objects, when the door body 30 is opened from the closed state to 90°, the line connecting the center axis of the first hinge shaft 41 (positioning center axis P) and the center axis of the second hinge shaft 42 (guide center axis Q) rotates 90° in the clockwise direction and moves a certain distance outward (from P0Q0 to P1Q1); that is, the hinge and the door body rotate 90° relative to each other. That is, if the first hinge shaft 41 and the second hinge shaft 42 are used as reference objects, the first track groove 50 and the second track groove 60 rotate 90° in the counterclockwise direction as a whole and move a certain distance inward. In this embodiment, the first track groove 50 and the second track groove 60 are arranged on the door body 30, that is, the door body 30 opens 90° relative to the hinge fixed on the box body, and moves inward a certain distance to avoid the door body 30 touching the cabinet 100 during the opening process. As described above, Figure 11 As shown, when the door body 30 is opened from a closed state to 90°, the first hinge shaft 41 and the second hinge shaft 42 both move along a circular arc, and the door body 30 always moves inward.

[0106] The door body 30 is rotated from 90° to open to the maximum angle A max During the process of turning the first hinge axis 40 by 90°, the line connecting the center axis of the second hinge axis 42 (the guide center axis Q) rotates clockwise by A with the first positioning point P1 as the center. max -90° (rotate from P1Q1 to P1Q2). That is, the door rotates counterclockwise relative to the hinge on the box body with the first positioning point P1 as the center to open A max -90°.

[0107] That is, the door body 30 is rotated from 90 degrees to the maximum angle A. max During the process of turning >90°, the first hinge shaft 41 is located at one end of the first track groove 50 close to the door side wall 32, and rotates relative to the first track groove 50 only around its own center axis (positioning center axis P); the second hinge shaft 42 rotates relative to the second track groove 60 with the center axis of the first hinge shaft 41 (positioning center axis P when the door body 30 is opened 90°) as the rotation axis.

[0108] In addition, in this embodiment, when the door body 30 is rotated from the closed state to the maximum angle A max During the process of rotating the door body 30 from the closed state to the 90° state, the position of the second hinge shaft 42 in the second track groove 60 is constantly changing, and there is no sudden force change, so the movement is smoother. The first hinge shaft 41 only changes its position in the first track groove 50 during the process of the door body 30 rotating from the closed state to the 90° state; the first hinge shaft 41 changes its position in the first track groove 50 during the process of the door body 30 rotating from the 90° state to the maximum angle A maxDuring the process of >90°, the first track groove 50 only rotates around its own central axis (positioning central axis P).

[0109] In this embodiment, during the entire process of opening the door body 30, the first hinge shaft 41 moves unidirectionally from one end of the first track groove 50 to the other end, and the second hinge shaft 42 moves unidirectionally from one end of the second track groove 60 to the other end. The movement process will not retract, thereby ensuring the smooth opening of the door body 30.

[0110] In this embodiment, when the door body 30 is in a 90° open state, the door front wall 31 or side edge 33 of the door body 30 has a gap θ with the first body side wall (reference plane M) of the box body 10, that is, the door front wall 31 of the door body 30 is located on the inner side of the reference plane M and the distance from the door front wall 31 to the reference plane M is θ>0, so that the door body 30 can continue to open at a small angle without interfering with the cabinet 100.

[0111] In the present example, when the refrigerator is placed in the cabinet 100, the door 30 can be opened to the maximum angle A. max >90°, approximately between 105° and 110°. This effectively limits the opening angle of the refrigerator door 30, thereby limiting the angle range of rotation of the second hinge axis 42 around the first hinge axis 41, so as to quickly open the door 30 from 90° to the maximum angle A. max >90°, and reduces the wear of the first hinge shaft 41 on the first track groove 50 during the process.

[0112] Example 3

[0113] In the embodiment of the present application, the door body 30 rotates around a changing point during the opening process, and the changing point has a trace, and its trajectory is (X=(X1+X2) / 2, Y=(Y1+Y2) / 2).

[0114] Here, X represents the distance between the changing point and the side wall 32 of the door body 30 , and Y represents the distance between the changing point and the front wall 31 of the door body 30 .

[0115] X1 represents the distance between the center point of the first hinge axis 41 in the first track groove 50 and the door side wall 32 of the door body 30 when the door body 30 is rotated open; X2 represents the distance between the center point of the second hinge axis 42 in the second track groove 60 and the door side wall 32 of the door body 30 when the door body 30 is rotated open;

[0116] Y1 represents the distance between the center point of the first hinge axis 41 in the first track groove 50 and the front wall 31 of the door body 30 when the door body 30 is rotated open; Y2 represents the distance between the center point of the second hinge axis 42 in the second track groove 60 and the front wall 31 of the door body 30 when the door body 30 is rotated open.

[0117] Specific reference Figure 15-18, the same as in the second embodiment, the center track line of the first track groove 50 is recorded as the first track line S, the center track line of the second track groove 60 is recorded as the second track line K, and the second track line K includes the first track arc K1.

[0118] The center axis of the first hinge axis 41 is denoted as the positioning center axis P, and the center axis of the second hinge axis 42 is denoted as the guide center axis Q. Figure 15-18 In the plane projection of the top wall of the box 10, point P represents the positioning center axis P, and point Q represents the guide center axis Q. The center of the arc of the first trajectory line S is O, and the radius of the first trajectory line S is R = OP. The first trajectory line S includes the positioning starting point P0 away from the door sidewall 32 and the first positioning point P1 close to the door sidewall 32; where ∠P0OP1 = 90°.

[0119] When the door 30 is in the closed state, see Figure 14 , the center axis of the first hinge axis 41 (positioning center axis P) is located at the positioning starting point P0 of the first trajectory line S, and the center axis of the second hinge axis 42 (guiding center axis Q) is located at the guiding starting point Q0 of the second trajectory line K. At this time, the distance between the positioning center axis P and the door side wall 32 of the door body 30 is a, the distance between the positioning center axis P and the door front wall 31 of the door body 30 is b, and the distance between the positioning center axis P and the guiding center axis Q is L (which is a constant and does not change as the door body 30 opens); the angle formed by the line connecting the positioning center axis P and the guiding center axis Q and the door front wall 31 is n; and the angle formed by the radius OP of the first trajectory line S of the moving trajectory of the positioning center axis P and the door front wall 31 of the door body 30 is γ.

[0120] That is, when the door 30 is closed, the position of point P is (a, b), and the position of point Q is (a+L*COSn, bL*SINn).

[0121] The motion trajectory of the change point can be calculated by the following formula:

[0122] See also Figure 16 ① When the rotation angle of the door body 30 is m, 0≤m≤n:

[0123] Positioning center axis P:

[0124] X1=aR*[COSγ-COS(γ+m)]; Y1=b+R*[SIN(γ+m)-SINγ];

[0125] Guide center axis Q:

[0126] X2=aR*[COSγ-COS(γ+m)]+L*COS(nm);

[0127] Y2=b+R*[SIN(γ+m)-SINγ]-L*SIN(nm).

[0128] See also Figure 17 ② When the rotation angle of the door body 30 is m, n≤m≤90°-γ:

[0129] Positioning center axis P:

[0130] X1=aR*[COSγ-COS(γ+m)]; Y1=b+R*[SIN(γ+m)-SINγ];

[0131] Guide center axis Q:

[0132] X2=aR*[COSγ-COS(γ+m)]+L*COS(mn);

[0133] Y2=b+R*[SIN(γ+m)-SINγ]+L*SIN(mn).

[0134] ③ When the rotation angle of the door body 30 is m, 90°-γ≤m≤90°:

[0135] Positioning center axis P:

[0136] X1=aR*[COSγ+COS(180°-γ-m)]=aR*[COSγ-COS(γ+m)];

[0137] Y1=b+R*[SIN(180°-γ-m)-SINγ]=b+R*[SIN(γ+m)-SINγ];

[0138] Guide center axis Q:

[0139] X2=aR*[COSγ+COS(180°-γ-m)]+L*COS(mn)=aR*[COSγ-COS(γ+m)]+L*COS(mn);

[0140] Y2=b+R*[SIN(180°-γ-m)-SINγ]+L*SIN(mn)

[0141] =b+R*[SIN(γ+m)-SINγ]+L*SIN(mn).

[0142] From ② and ③, when the rotation angle of the door body 30 is m, n≤m≤90°:

[0143] Positioning center axis P:

[0144] X1=aR*[COSγ+COS(180°-γ-m)]=aR*[COSγ-COS(γ+m)];

[0145] Y1=b+R*[SIN(180°-γ-m)-SINγ]=b+R*[SIN(γ+m)-SINγ];

[0146] Guide center axis Q:

[0147] X2=aR*[COSγ+COS(180°-γ-m)]+L*COS(mn)=aR*[COSγ-COS(γ+m)]+L*COS(mn);

[0148] Y2=b+R*[SIN(180°-γ-m)-SINγ]+L*SIN(mn)

[0149] =b+R*[SIN(γ+m)-SINγ]+L*SIN(mn).

[0150] In summary, see Figure 18 , we can find out when the rotation angle of the door body 30 is m = 90°:

[0151] Positioning center axis P:

[0152] X1=aR*[COSγ+COS(90°-γ)]=aR*[COSγ+SINγ];

[0153] Y1=bR*[SINγ-SIN(90°-γ)]=bR*[SINγ-COSγ];

[0154] Guide center axis Q:

[0155] X2=aR*[COSγ+COS(90°-γ)]+L*COS(90°-n)=aR*[COSγ+SINγ]+L*SINn;

[0156] Y2=b+R*[SIN(90°-γ)-SINγ]+L*SIN(90°-n)=b+R*[COSγ-SINγ]+L*COSn.

[0157] ④ When m≥90°, it can be set that the second trajectory line K also includes a second trajectory arc K2, and the first trajectory arc K1 and the second trajectory arc K2 are connected at the first guide point Q1 (same as in the second embodiment);

[0158] When the rotation angle of the door body 30 is m=90°, the center axis of the first hinge axis 41 moves to the first positioning point P1 of the first track groove 50 (the same as in Example 2); when the rotation angle of the door body 30 is m, m≥90°, the door body 30 rotates around a fixed axis and along the second track arc K2. The fixed axis is the positioning center axis P located at the first positioning point P1 when m=90°.

[0159] It should be noted that the motion trajectory calculation of the door body 30 from the closed state to 90° in this embodiment is applicable to other embodiments of the present application. When applicable to other embodiments, the first trajectory line S is not limited by ∠P0OP1=90°.

[0160] Example 4

[0161] In this embodiment, in order to allow the refrigerator to be opened to a greater angle when not embedded in the cabinet 100, the maximum opening angle of the refrigerator is set to A. max >90°; it opens from closed state to A max The process is divided into two stages. The first stage is opening from the closed state to 90°, and the second stage is opening from 90° to A max >90°.

[0162] In this embodiment, refer to Figures 19-22 , the second trajectory line K of the second trajectory groove 60 has a second guide point Q2; wherein, the first guide point Q1 is located between the guide starting point Q0 and the second guide point Q2. The second trajectory line K extends from the first guide point Q1 along the arc to the second guide point Q2. In this embodiment, the arc connecting the first guide point Q1 and the second guide point Q2 is recorded as the second trajectory arc K2. That is, in this embodiment, the second trajectory line K includes two arcs with different radii. Specifically, the second trajectory line K includes the first trajectory arc K1 and the second trajectory arc K2, and the first trajectory arc K1 and the second trajectory arc K2 are connected at the first guide point Q1; wherein, the radius R1 of the first trajectory arc K1 is greater than the radius R2 of the second trajectory arc K2. The second trajectory line K of the above second trajectory groove 60 is the same as the second trajectory line in the second embodiment, both including the first trajectory arc K1 and the second trajectory arc K2. It can be set that the radius of the second trajectory arc K2 in the third embodiment is smaller than the radius of the second trajectory arc K2 in the second embodiment. In addition, the circle O2 where the second trajectory arc K2 is located contains the circle O where the first trajectory line S is located; that is, the circle where the arc included in the second trajectory line K is located contains the circle O where the first trajectory line S is located.

[0163] As a configurable manner, the circle O1 where the first trajectory arc K1 is located and the circle O1 where the second trajectory arc K2 is located are tangent at the first guide point Q1, so that the second trajectory line K is smooth as a whole.

[0164] The first track line S of the first track groove 50 has a first positioning point P2, and the first positioning point P1 is located between the positioning starting point P0 and the second positioning point P2. The first track line S is still in the shape of a circular arc as in the first and second embodiments, with the starting positioning point P0, the first positioning point P1, and the second positioning point P2 on the circle O. That is, the arc connecting the first positioning point P1 and the second positioning point P2 is cocircular with the arc connecting the starting positioning point P0 and the first positioning point P1. Here, in this embodiment, the first track line S represents the arc P0P2. Compared with the first and second embodiments, the center angle corresponding to the first track line S in this embodiment is larger than the center angle corresponding to the first track line S in the first and second embodiments.

[0165] like Figure 20 As shown, when the door body 30 is in a closed state, the center axis of the first hinge axis 41 (positioning center axis P) is located at the positioning starting point P0 of the first trajectory line S, and the center axis of the second hinge axis 42 (guide center axis Q) is located at the guide starting point Q0 of the second trajectory line K.

[0166] like Figure 21 As shown, the door 30 is opened to A max =90°, the center axis (positioning center axis P) of the first hinge axis 41 is located at the first positioning point P1; the center axis (guide center axis Q) of the second hinge axis 42 is located at the first guide point Q1.

[0167] like Figure 22 As shown, the door 30 is opened to A max When the angle is greater than 90°, the center axis of the first hinge axis 41 (positioning center axis P) is located at the second positioning point P2; the center axis of the second hinge axis 42 (guide center axis Q) is located at the second guide point Q2.

[0168] The door body 30 is rotated from the closed state to open to A max The process of >90° is described in detail:

[0169] Phase 1

[0170] During the process of rotating the door body 30 from the closed position (0°) to 90°, the center axis of the first hinge shaft 41 (positioning center axis P) moves along the first trajectory line S relative to the first track groove 50 to the first positioning point P1. The center axis of the second hinge shaft 42 (guide center axis Q) moves along the first trajectory arc K1 relative to the second track groove 60 to the first guide point Q1. The movement process is the same as that described in the first embodiment, and the specific process is not repeated here.

[0171] Phase II

[0172] Reference Figure 22When the door body 30 continues to open from 90°, the center axis (positioning center axis P) of the first hinge shaft 41 continues to move from the first positioning point P1 along the first trajectory line S to the second positioning point P2 relative to the first trajectory groove 50, and the second hinge shaft 42 moves from the first guide point Q1 along the second trajectory arc K2 to the second guide point Q2 relative to the second trajectory groove 60.

[0173] Among them, the second positioning point P2 is closer to the door front wall 31 and the door side wall 32 than the first positioning point P1, and the first trajectory line S extends from the positioning starting point P0 along the arc toward the door front wall 31 and the door side wall 32 to the second positioning point P2, and passes through the first positioning point P1.

[0174] The second guide point Q2 is closer to the door front wall 31 and the door side wall 32 than the first guide point Q1. The second trajectory line K extends from the first guide point Q1 to the direction away from the door front wall 31 and closer to the door side wall 32 along the second trajectory arc K2 to the second guide point Q2. The above arrangement causes the side edge 33 of the door body 30 to move backward and inward for a distance when rotating. max During the process of >90°, the first hinge shaft 41 moves in an arc relative to the first track groove 50 along the first track line S; the second hinge shaft 42 moves in an arc relative to the second track groove 60 along the second track arc K2.

[0175] In the above embodiment, Figure 19 As shown ( Figure 19 The middle dotted line represents the extension line of the first track arc K1, for comparison with the second track arc K2). Taking the first track groove 50 and the second track groove 60 as reference objects, when the door body 30 is opened from the closed state to 90°, the line connecting the center axis of the first hinge shaft 41 (positioning center axis P) and the center axis of the second hinge shaft 42 (guide center axis Q) rotates 90° in the clockwise direction and moves a certain distance outward (from P0Q0 to P1Q1); that is, the hinge and the door body rotate 90° relative to each other. That is, if the first hinge shaft 41 and the second hinge shaft 42 are used as reference objects, the first track groove 50 and the second track groove 60 rotate 90° in the counterclockwise direction as a whole and move a certain distance inward. In this embodiment, the first track groove 50 and the second track groove 60 are arranged on the door body 30, that is, the door body 30 opens 90° relative to the hinge fixed on the box body, and moves inward a certain distance to avoid the door body 30 touching the cabinet 100 during the opening process. As described above, Figure 11 As shown, when the door body 30 is opened from a closed state to 90°, the first hinge shaft 41 and the second hinge shaft 42 both move along a circular arc, and the door body 30 always moves inward.

[0176] The door body 30 is rotated from 90° to open to the maximum angle A maxDuring the process of turning the hinge axis 90°, the line connecting the central axis of the second hinge axis 42 (the guide central axis Q) rotates in the clockwise direction by A. max -90° and move outwards a certain distance (rotate from P1Q1 to P2Q2). That is, the door rotates relative to the hinge on the box to open A max -90° and continue to move outwards for a certain distance. max During the process of rotating the door body 30 to open the unit angle, the door body 30 moves outwards a small distance; that is, the door body 30 rotates from 90° to the maximum angle A max During the process of turning the door 30 to 90°, the door 30 mainly rotates to open, and moves outward as a supplement. max During the process of >90°, the first hinge shaft 41 always moves in a circular arc along the first track line S of the first track groove 50; the second hinge shaft 42 always moves in a circular arc along the first track arc K1 and the second track arc K2 of the second track line K of the second track groove 60, so that there is no acceleration of stopping and moving again during the entire opening process of the door body 30, and the movement is smoother.

[0177] This embodiment is the same as the first embodiment, and the door body 30 is opened from the closed state to the maximum angle A. max Throughout the entire process of turning the hinge angle >90°, the position of the first hinge axis 41 within the first track groove 50 and the position of the second hinge axis 42 within the second track groove 60 constantly change, eliminating sudden force changes and ensuring smoother motion. Furthermore, the dual-axis motion of the present invention eliminates sudden changes in motion state and acceleration, making the first and second track grooves 50 and 60 less susceptible to wear than conventional methods.

[0178] In this embodiment, during the entire process of opening the door body 30, the first hinge shaft 41 moves unidirectionally from one end of the first track groove 50 to the other end, and the second hinge shaft 42 moves unidirectionally from one end of the second track groove 60 to the other end. The movement process will not retract, thereby ensuring the smooth opening of the door body 30.

[0179] In the closed state, the door body 30 is rotated to open to the maximum angle A. max>90°, the door body 30 rotates a unit angle, the average moving arc length of the first hinge axis 41 relative to the first track groove 50 is recorded as β1, and the average moving arc length of the second hinge axis 42 relative to the second track groove 60 is recorded as β2; λ=β2:β1; wherein, in the first stage (the door body 30 is rotated from the closed state to open 90°), the door body 30 rotates a unit angle, the ratio of the average moving arc length β2 of the second hinge axis 42 relative to the second track groove 60 to the average moving arc length β1 of the first hinge axis 41 relative to the first track groove 50 is recorded as λ1, and in the second stage (the door body 30 is rotated from 90° to open A max >90°), the door body 30 rotates a unit angle, and the ratio of the average moving arc length β2 of the second hinge axis 42 relative to the second track groove 60 to the average moving arc length β1 of the first hinge axis 41 relative to the first track groove 50 is recorded as λ2, λ2>λ1. In the first stage of opening the door body 30 (the door body 30 rotates from the closed state to open 90°), the door body 30 is moved inward to avoid interference between the side edge 33 of the door body 30 and the cabinet 100; and the door body 30 is opened from 90° to the cabinet 100. max When the angle is greater than 90°, the outward rotation movement is mainly performed, supplemented by the outward movement, so as to keep the positions of the first hinge axis 41 and the second hinge axis 42 constantly changing, so that the movement of the door body 30 is smoother.

[0180] For example, as defined in the first embodiment, the radius of the arc on which the first trajectory line S lies is denoted as R, and the radius of the arc on which the second trajectory line K lies is denoted as R1, where R1>R. The circle on which the first trajectory line S lies is O, and the circle on which the second trajectory line K lies is . In this embodiment, it can be specifically configured that, when the door body 30 rotates from a closed state to open 90°, ∠P0OP1=π / 2, ∠Q0Q1=π / 3, then β1=(R·π / 2) / 90°, β2=(R1·π / 3) / 90°; λ1=β2: β1=2 / 3(R1 / R).

[0181] Door 30 rotates 90 degrees to open to A max =106°>90°, ∠P0OP1=2π / 45, ∠Q0Q1=π / 18, then β1=(R·2π / 45) / 16°, β2=(R1·π / 18) / 16°; λ2=β2: β1=5 / 4(R1 / R). That is, λ2>λ1.

[0182] In the present example, when the refrigerator is placed in the cabinet 100, the door 30 can be opened to the maximum angle A. max >90°, approximately between 105° and 110°.

[0183] In this embodiment, when the door body 30 is in a 90° open state, the door front wall 31 or side edge 33 of the door body 30 has a gap θ with the first body side wall (reference plane M) of the box body 10, that is, the door front wall 31 of the door body 30 is located on the inner side of the reference plane M and the distance from the door front wall 31 to the reference plane M is θ>0, so that the door body 30 can continue to open at a small angle without interfering with the cabinet 100.

[0184] Example 5

[0185] In this embodiment, in order to allow the refrigerator to be opened to a greater angle when not embedded in the cabinet 100, the maximum opening angle of the refrigerator is set to A. max >90°; it opens from closed state to A max The process is divided into two stages. The first stage is opening from the closed state to 90°, and the second stage is opening from 90° to A max >90°.

[0186] In this embodiment, refer to Figure 23-26 , the second trajectory line K of the second trajectory groove 60 has a second guide point Q2; wherein, the first guide point Q1 is located between the guide starting point Q0 and the second guide point Q2. The second trajectory line K extends from the first guide point Q1 along a circular arc to the second guide point Q2. In this embodiment, the circular arc connecting the first guide point Q1 and the second guide point Q2 is recorded as the second trajectory arc K2. That is, in this embodiment, the second trajectory line K includes two arcs with different radii. Specifically, the second trajectory line K includes a first trajectory arc K1 and a second trajectory arc K2, and the first trajectory arc K1 and the second trajectory arc K2 are connected at the first guide point Q1. The second trajectory line K of the above second trajectory groove 60 is the same as the second trajectory line in the second embodiment, both including a first trajectory arc K1 and a second trajectory arc K2. It can be set that the radius of the second trajectory arc K2 in the third embodiment is greater than the radius of the second trajectory arc K2 in the second embodiment. Specifically, in this embodiment, the radius R2 of the second trajectory arc K2 is greater than the radius R1 of the first trajectory arc K1. That is, R2>R1 (R2<R1 in the second embodiment). In addition, the circle O2 where the second trajectory arc K2 is located contains the circle O where the first trajectory line S is located; that is, the circle where the arc included in the second trajectory line K is located contains the circle O where the first trajectory line S is located.

[0187] As a configurable manner, the circle O1 where the first trajectory arc K1 is located and the circle O1 where the second trajectory arc K2 is located are tangent at the first guide point Q1, so that the second trajectory line K is smooth as a whole.

[0188] The first track line S of the first track groove 50 has a first positioning point P2, and the second positioning point P2 is located between the positioning starting point P0 and the first positioning point P1. The first track line S is still arc-shaped, as in the first and second embodiments, with the starting positioning point P0, the first positioning point P1, and the second positioning point P2 lying on circle O. That is, the arc connecting the first positioning point P1 and the second positioning point P2 is cocircular with the arc connecting the starting positioning point P0 and the first positioning point P1. Compared to the first and second embodiments, the central angle corresponding to the first track line S in this embodiment is equal to the central angle corresponding to the first track line S in the first and second embodiments.

[0189] like Figure 24 As shown, when the door body 30 is in a closed state, the center axis of the first hinge axis 41 (positioning center axis P) is located at the positioning starting point P0 of the first trajectory line S, and the center axis of the second hinge axis 42 (guide center axis Q) is located at the guide starting point Q0 of the second trajectory line K.

[0190] like Figure 25 As shown, the door 30 is opened to A max =90°, the center axis (positioning center axis P) of the first hinge axis 41 is located at the first positioning point P1; the center axis (guide center axis Q) of the second hinge axis 42 is located at the first guide point Q1.

[0191] like Figure 26 As shown, the door 30 is opened to A max When the angle is greater than 90°, the center axis of the first hinge axis 41 (positioning center axis P) is located at the second positioning point P2; the center axis of the second hinge axis 42 (guide center axis Q) is located at the second guide point Q2.

[0192] The door body 30 is rotated from the closed state to open to A max The process of >90° is described in detail:

[0193] Phase 1

[0194] During the process of rotating the door body 30 from the closed position (0°) to 90°, the center axis of the first hinge shaft 41 (positioning center axis P) moves along the first trajectory line S relative to the first track groove 50 to the first positioning point P1. The center axis of the second hinge shaft 42 (guide center axis Q) moves along the first trajectory arc K1 relative to the second track groove 60 to the first guide point Q1. The movement process is the same as that described in the first embodiment, and the specific process is not repeated here.

[0195] Phase II

[0196] Reference Figure 26When the door body 30 continues to open from 90°, the center axis (positioning center axis P) of the first hinge shaft 41 withdraws from the first positioning point P1 relative to the first track groove 50 and moves along the first track line S (opposite to the moving direction of the first stage) to the second positioning point P2, and the second hinge shaft 42 moves from the first guide point Q1 to the second guide point Q2 along the second track arc K2 relative to the second track groove 60.

[0197] Among them, the second positioning point P2 is farther away from the door front wall 31 and the door side wall 32 than the first positioning point P1, and the first trajectory line S extends from the positioning starting point P0 along the arc toward the door front wall 31 and the door side wall 32 to the first positioning point P1, and passes through the second positioning point P2.

[0198] The second guide point Q2 is farther from the door front wall 31 and closer to the door side wall 32 than the first guide point Q1. The second trajectory line K extends from the first guide point Q1 to the direction away from the door front wall 31 and closer to the door side wall 32 along the second trajectory arc K2 to the second guide point Q2. The above arrangement causes the side edge 33 of the door body 30 to move forward and inward for a certain distance during rotation. When the door body 30 is rotated from 90° to the maximum angle A, max During the process of >90°, the first hinge shaft 41 makes a circular arc reciprocating motion along the first track line S relative to the first track groove 50; the second hinge shaft 42 makes a circular arc unidirectional motion along the second track arc K2 relative to the second track groove 60.

[0199] In the above embodiment, Figure 23 As shown ( Figure 23 The middle dotted line represents the extension line of the first track arc K1, for comparison with the second track arc K2). Taking the first track groove 50 and the second track groove 60 as reference objects, when the door body 30 is opened from the closed state to 90°, the line connecting the center axis of the first hinge shaft 41 (positioning center axis P) and the center axis of the second hinge shaft 42 (guide center axis Q) rotates 90° in the clockwise direction and moves a certain distance outward (from P0Q0 to P1Q1); that is, the hinge and the door body rotate 90° relative to each other. That is, if the first hinge shaft 41 and the second hinge shaft 42 are used as reference objects, the first track groove 50 and the second track groove 60 rotate 90° in the counterclockwise direction as a whole and move a certain distance inward. In this embodiment, the first track groove 50 and the second track groove 60 are arranged on the door body 30, that is, the door body 30 opens 90° relative to the hinge fixed on the box body, and moves inward a certain distance to avoid the door body 30 touching the cabinet 100 during the opening process. As described above, Figure 11 As shown, when the door body 30 is opened from a closed state to 90°, the first hinge shaft 41 and the second hinge shaft 42 both move along a circular arc, and the door body 30 always moves inward.

[0200] The door body 30 is rotated from 90 degrees to open to the maximum angle A maxDuring the process of turning the hinge axis 90°, the line connecting the central axis of the second hinge axis 42 (the guide central axis Q) rotates in the clockwise direction by A. max -90° and move inward a certain distance (rotate from P1Q1 to P2Q2). That is, the door rotates relative to the hinge on the box to open A max -90° and continue to move inwards for a certain distance. In which, the door body 30 is rotated from 90° to the maximum angle A max During the process of rotating the door body 30 to open the unit angle, the door body 30 moves inwards a small distance; that is, the door body 30 rotates from 90° to the maximum angle A max During the process of turning the door 30 to 90°, the door 30 mainly rotates to open, and moves inward as a supplement. max During the process of >90°, the first hinge shaft 41 always moves along the first track line S of the first track groove 50; the second hinge shaft 42 always moves in a circular arc along the first track arc K1 and the second track arc K2 of the second track line K of the second track groove 60, so that the door body 30 moves more smoothly during the entire opening process.

[0201] This embodiment is the same as the first embodiment, and the door body 30 is opened from the closed state to the maximum angle A. max Throughout the entire process of turning the hinge angle >90°, the position of the first hinge axis 41 within the first track groove 50 and the position of the second hinge axis 42 within the second track groove 60 constantly change, eliminating sudden force changes and ensuring smoother motion. Furthermore, the dual-axis motion of the present invention eliminates sudden changes in motion state and acceleration, making the first and second track grooves 50 and 60 less susceptible to wear than conventional methods.

[0202] In this embodiment, during the entire process of opening the door body 30, the first hinge shaft 41 moves unidirectionally from one end of the first track groove 50 to the other end, and then withdraws from the other end to the middle of the first track groove 50; the second hinge shaft 42 moves unidirectionally from one end of the second track groove 60 to the other end, and will not withdraw during the movement process; the above arrangement of this embodiment enables the door body 30 to move inward during the opening process, so that the door body 30 does not interfere with the cabinet 100, and ensures the smooth opening of the door body 30.

[0203] Example 6

[0204] The principle of this embodiment is the same as that of the first to fifth embodiments, and the main difference is that in the fourth embodiment, see Figure 5 As shown, along the direction from the side of the door body 30 away from the door side wall 32 to the door side wall 32, the distance between the point on the first trajectory line S and the door front wall 31 first increases and then decreases, so that the door body 30 moves a certain distance toward the side away from the box body 10 when it is opened.

[0205] Specifically, the maximum distance between the first track line S and the door front wall 31 is recorded as D max ; Correspondingly, the first trajectory line S and the maximum distance D max The corresponding point is recorded as the maximum distance point F; that is, the distance between the maximum distance point F and the front wall 31 is D max In this embodiment, the maximum distance point F is located between the positioning starting point P0 and the second positioning point P2. From the first embodiment, it can be seen that the distance between the positioning starting point P0 of the first track groove 50 and the door front wall 31 is D1, and the distance between the second positioning point P2 of the first track groove 50 and the door front wall 31 is D2; that is, D1<D max , and D2<D max In this embodiment, D2<D1<D max ∠P0OF<∠FOP e It can be set to ∠P0OF∈[20°, 35°]; in this embodiment, ∠P0OF=30°.

[0206] When the first hinge shaft 41 moves relative to the first track groove 50, it first moves along the first track groove 50 toward the side away from the door front wall 31. After it moves to the maximum distance point F, the first hinge shaft 41 moves along the first track groove 50 toward the side close to the door front wall 31. As the door body 30 opens, when the first hinge shaft 41 moves to the maximum distance point F, the second hinge shaft 42 moves along the second track groove 60 to the first position point.

[0207] In the early stage of the door 30 opening (during the process of the center axis of the first hinge shaft 41 moving from the positioning starting point P0 to the maximum distance point F), the center axis of the first hinge shaft 41 moves from the positioning starting point P0 along the first track groove 50 to the maximum distance point F, while the second hinge shaft 42 moves from the guide starting point Q0 along the second track groove 60 to the first position point (not shown), so that the door 30 moves a certain distance inward and a certain distance forward. This prevents friction between the door seal and the box body 10 during opening.

[0208] In the description of the above embodiments, the extension direction of the arc line is based on the moving direction of the first hinge axis 41 relative to the first track groove 50 or the moving direction of the second hinge axis 42 relative to the second track groove 60 during the opening process of the door body 30.

[0209] Specifically, the tangent angle between the movement trajectory of the first hinge shaft 41 and the movement trajectory of the second hinge shaft 42 at any corresponding point is greater than 20°, thereby ensuring the smooth movement of the door body 30 .

[0210] In the embodiment of the present application, since the first hinge shaft 41 mainly plays a positioning role and the second hinge shaft 42 mainly plays a guiding role, among the two hinge shafts, the first hinge shaft 41 is the main shaft and the second hinge shaft 42 is the auxiliary shaft, and the force is mainly concentrated on the main shaft (the first hinge shaft 41). Therefore, the length of the first hinge shaft 41 is set to be greater than the second hinge shaft 42. Accordingly, the first track groove 50 is deeper than the second track groove 60. This can avoid the waste of material costs caused by the second hinge shaft 42 being too long, and at the same time avoid the problem of the track groove and the hinge shaft being easily separated when the first hinge shaft 41 is shorter when the door body 30 is tilted, thereby saving material costs while ensuring structural reliability.

[0211] In addition, since the force is concentrated on the first hinge shaft 41, the first hinge shaft 41 can be set to have a larger diameter than the second hinge shaft 42. In this way, the first hinge shaft 41 is thicker and can bear the force better, and has sufficient strength to withstand the force when the door body 30 is tilted; at the same time, since the second track groove 60 is longer and occupies more space in the thickness direction of the door body 30, the second hinge shaft 42 is set to be thinner, and the second track groove 60 can be narrower accordingly, so that the door body 30 can be designed to be thinner, and the overall thickness of the refrigerator can be smaller, which has the advantage of small size.

[0212] According to the first, fourth, and fifth embodiments of the present application, throughout the process of opening the door body 30 from the closed position to the maximum angle, the position of the first hinge axis 41 within the first track groove 50 and the position of the second hinge axis 42 within the second track groove 60 continuously change, without sudden force changes, resulting in smoother movement. Furthermore, the dual-axis movement in the above embodiments does not experience sudden changes in motion state and does not produce changes in acceleration, so the first track groove 50 and the second track groove 60 are less susceptible to wear.

[0213] According to embodiments one to six of the present application, when the door body 30 is opened from a closed state to 90°, the first hinge shaft 41 and the second hinge shaft 42 both move along a circular arc, and the door body 30 always moves inward (toward the side wall of the second body).

[0214] According to the second embodiment of the present application, the door body 30 is rotated from the closed state to the maximum angle A. max During the process of rotating the door body 30 from the closed state to the 90° state, the position of the second hinge shaft 42 in the second track groove 60 is constantly changing, and there is no sudden force change, so the movement is smoother. The first hinge shaft 41 only changes its position in the first track groove 50 during the process of the door body 30 rotating from the closed state to the 90° state; the first hinge shaft 41 changes its position in the first track groove 50 during the process of the door body 30 rotating from the 90° state to the maximum angle A max During the process of >90°, the door 30 rotates only around its own central axis (positioning central axis P) relative to the first track groove 50. When the refrigerator is set in the cabinet 100, the door body 30 can be opened to the maximum angle Amax >90° The second stage rotation angle is limited to a small range, and the door body 30 can be quickly opened from 90° to the maximum angle A max >90°, and reduces the wear of the first hinge shaft 41 on the first track groove 50 during the process.

[0215] The arc-shaped first track groove 50 and the second track groove 60 including one or two arcs of different diameters in the above embodiments 1 to 6 of the present application effectively ensure the smoothness of the door body 30 throughout the entire movement process, avoiding the door body 30 from moving inward abruptly and causing frustration to the user.

[0216] According to Examples 1 to 4 of the present application, during the entire process of opening the door body 30, the first hinge shaft 41 moves unidirectionally from one end of the first track groove 50 to the other end, and the second hinge shaft 42 moves unidirectionally from one end of the second track groove 60 to the other end, and the movement process will not retract, thereby ensuring the smooth opening of the door body 30.

[0217] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A refrigerator, characterized in that It includes: A box body defines a heat-insulated storage room; the box body includes a first side wall and a second side wall disposed opposite to each other; a hinge disposed on the box body and close to the first body side wall; the hinge comprises a first hinge axis and a second hinge axis located on a side of the first hinge axis away from the first body side wall; The door body comprises a door front wall away from the box body when the door body is closed, and a door side wall close to the hinge and connected to the door front wall; The first track groove and the second track groove are both provided at the end of the door body close to the hinge; the first hinge shaft cooperates with the first track groove, and the second hinge shaft cooperates with the second track groove, so that the door body can move a distance toward the side wall of the second body while rotating; wherein, The center track line of the first track groove is recorded as the first track line S, and the center track line of the second track groove is recorded as the second track line K; the first track line S is in the shape of a circular arc, and the second track line K is composed of at least one circular arc; the centers of the arcs contained in the second track line K are all located on the side thereof close to the door front wall and the door side wall; the center O of the first track line S is located on the side thereof close to the door front wall, and the first track line S is located on the side of the second track line K close to the door front wall; along the direction from the side of the door body away from the door side wall to the door side wall, the distance between the point on the first track line S and the door front wall first increases and then decreases, so that the door body moves a certain distance toward the side away from the box body when it is opened; The radius of the arc where the first trajectory line S is located is recorded as R. The second trajectory line K includes a first trajectory arc K1 in an arc shape. The radius of the arc where the first trajectory arc K1 is located is recorded as R1, and R1>R.

2. The refrigerator according to claim 1, wherein: The circle where the arc included in the second trajectory line K is located contains the circle O where the first trajectory line S is located.

3. The refrigerator according to claim 2, wherein: The center O of the first trajectory line S and the center of the arc included in the second trajectory line K do not coincide with each other.

4. The refrigerator according to claim 1, 2 or 3, characterized in that: The second trajectory line K includes a guide starting point Q0 and a first guide point Q1, wherein the first guide point Q1 is located on a side of the guide starting point Q0 away from the door front wall and close to the door side wall; the second trajectory line K extends from the guide starting point Q0 to the first guide point Q1 along a circular first trajectory arc K1; The first trajectory line S includes a positioning starting point P0 away from the door side wall and a first positioning point P1 close to the door side wall.

5. The refrigerator according to claim 4, wherein: The second trajectory line K includes a second guide point Q2, and the first guide point Q1 is located between the guide starting point Q0 and the second guide point Q2; the second trajectory line K extends from the first guide point Q1 along the circular second trajectory arc K2 to the second guide point Q2; the radius R1 of the first trajectory arc K1 is not equal to the radius R2 of the second trajectory arc K2.

6. The refrigerator according to claim 5, characterized in that: The first trajectory arc K1 and the second trajectory arc K2 are tangent to each other at the first guide point Q1.

7. The refrigerator according to claim 4, wherein: Along the direction from the guide starting point Q0 to the first guide point Q1, the distance G from the point on the second trajectory line K to the door side wall gradually decreases.

8. The refrigerator according to claim 4, wherein: The distance between the positioning starting point P0 and the front wall of the door is recorded as D1, and the distance between the first positioning point P1 and the front wall of the door is recorded as D2; The distance between the guide starting point Q0 and the front wall of the door is recorded as Z1, and the distance between the first guide point Q1 and the front wall of the door is recorded as Z2, Z1<D2<D1<Z2.

9. The refrigerator according to claim 8, characterized in that: ∠P0OP1=90°.

10. The refrigerator according to claim 1, 2 or 3, characterized in that: When the door body is in a closed state, the central axis of the first hinge axis is located at the positioning starting point P0 of the first track line S, and the central axis of the second hinge axis is located at the guiding starting point Q0 of the second track line K.

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