Refrigerator

Abstract

The application provides a refrigerator, which comprises a box body defining a storage chamber with a taking and placing opening, a hinge arranged on the box body and close to a first body side wall, and a door body; the box body comprises the first body side wall and a second body side wall arranged oppositely; the hinge is provided with a guide part and a guide part, and the guide part and the guide part both have circular arc track lines; an end of the door body close to the hinge is provided with a first door shaft matched with the guide part and a second door shaft matched with the guide part; during the opening process of the door body from the closed state, the first door shaft makes circular arc movement relative to the guide part, and the second door shaft makes circular arc movement relative to the guide part, so as to move the door body by a certain distance; when the door body is opened to 90°, a door front wall is parallel to the first body side wall, and the door front wall is located on a side of the first body side wall away from the second body side wall; the refrigerator accurately controls the rotation of the door body, so that the door body does not exceed or excessively exceeds the side surface of the box body when being opened, and the movement of the door body is smooth when being opened.

Description

Technical Field

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

[0002] In related technologies, the hinge structure of refrigerator doors is mostly of the single-axis type. The door rotates around the hinge axis by cooperating with the door's bushing. When the door is opened, the corner of the door will extend beyond the side of the refrigerator. Since the door does not move around its fixed axis of rotation, the opening and closing freedom of the door is greatly restricted when the refrigerator is opened.

[0003] Nowadays, refrigerators are generally placed inside cabinets to achieve built-in refrigerators. For built-in refrigerators, the corners of the door cannot extend too far beyond the dimensions of the cabinet when the door is opened. These requirements for built-in refrigerators limit their use. Summary of the Invention

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

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

[0006] The refrigerator according to this application includes:

[0007] A housing that defines a storage compartment with an access opening; the housing includes a first body sidewall and a second body sidewall disposed opposite to each other;

[0008] A hinge is provided on the housing and close to the side wall of the first body; the hinge is provided with a guide part and a guide part, and the guide part and the guide part both have an arc-shaped trajectory line;

[0009] The door body has a front wall away from the housing when the door body is closed, and a side wall near the hinge and connected to the front wall; the end of the door body near the hinge is provided with a first door hinge that cooperates with the guide portion and a second door hinge that cooperates with the guide portion;

[0010] During the opening process of the door from the closed state, the first door hinge moves in an arc relative to the guide part, and the second door hinge moves in an arc relative to the guide part, so that the door moves inward a certain distance;

[0011] When the door is opened to 90°, the front wall of the door is parallel to the side wall of the first body, and the front wall of the door is located on the side of the first body side wall away from the side wall of the second body.

[0012] In some embodiments of this application, the door body has a rear wall opposite to the front wall of the door;

[0013] The arc-shaped trajectory line of the guide part is denoted as the guide trajectory line; the guide trajectory line extends from the front wall of the door to the rear wall of the door when the door is closed, and the center of the guide trajectory line is located on the side away from the first body side wall;

[0014] The arc-shaped trajectory line of the guide part is denoted as the guide trajectory line; the guide trajectory line extends along the arc from the side wall of the first body to the side wall of the second body, and the center of the guide trajectory line is located on the side away from the pick-up and put-out port.

[0015] In some embodiments of this application, the guide trajectory line has a starting guide point P0 and a fourth guide point P4 located on the side of the starting guide point P0 near the pick-up / placement port;

[0016] When the door is closed, the guide center axis P is located at the starting guide point P0;

[0017] When the door is opened to 90°, the guide center axis P is located at the fourth guide point P4; wherein, the straight line P0P4 is parallel to the side wall of the first body.

[0018] In some embodiments of this application, the door has a first side edge that is close to the hinge and away from the retrieval opening when the door is closed;

[0019] When the central axis of the first door hinge moves to the starting guide point P0, the first side edge is located at W0;

[0020] When the central axis of the first door hinge moves to the fourth guide point P4, the first side edge is located at W4;

[0021] The line containing W0W4 is designated as the second line W0W4, which is parallel to the first line P0P4.

[0022] In some embodiments of this application, the door has a second side edge that is close to the hinge and close to the retrieval opening when the door is closed;

[0023] The plane where the retrieval port is located is denoted as the second reference plane M2. The side of the first body wall away from the retrieval port is provided with a first reference plane M1 that is perpendicular to the second reference plane M2. The first reference plane M1 and the second reference plane M2 remain stationary relative to the box body during the opening process of the door body relative to the box body.

[0024] During the process of the door opening to its maximum angle, the second side edge makes an arc motion, and the second side edge first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves away from the first reference plane M1 and away from the second reference plane M2.

[0025] In some embodiments of this application, during the process of the door opening to its maximum angle, the movement trajectory of the second side edge is recorded as the second side edge trajectory line;

[0026] The center of the circle containing the trajectory line of the second side edge is denoted as the center of the second side edge circle O4; the point on the trajectory line of the second side edge that is the closest to the pick-up and put-out port is denoted as N3; wherein, the straight line O4N3 is parallel to the side wall of the first body.

[0027] In some embodiments of this application, a door seal is provided on the wall surface opposite to the front wall of the door, which cooperates with the front face of the box when the door is closed. The door seal has a side sealing edge that is close to the side wall of the door and away from the front wall of the door.

[0028] During the process of the door opening to its maximum angle, the side sealing edge makes an arc motion, and the side sealing edge first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves away from the first reference plane M1 and away from the second reference plane M2.

[0029] In some embodiments of this application, when the door is opened, the movement trajectory of the side sealing edge is recorded as the side sealing edge trajectory line; the circle containing the side sealing edge trajectory line and the circle containing the arc-shaped trajectory line of the guide part are concentric circles.

[0030] In some embodiments of this application, the door has a first side edge near the hinge and away from the retrieval opening when the door is closed; when the door is closed, the first side edge is located on the side of the second side edge away from the housing.

[0031] During the process of the door opening to its maximum angle, the first side edge makes an arc motion, and the first side edge first moves towards the first reference plane M1 and the second reference plane M2, and then moves away from the first reference plane M1 and towards the second reference plane M2.

[0032] In some embodiments of this application, when the door is opened, the movement trajectory of the first side edge is recorded as the first side edge trajectory line;

[0033] The center of the circle containing the trajectory line of the first side edge is denoted as the center of the first side edge circle O3; the center of the circle containing the arc-shaped trajectory line of the guide part is denoted as the center of the guide circle O1; wherein, the straight line O1O3 is perpendicular to the side wall of the first body.

[0034] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0035] This invention proposes a refrigerator comprising a cabinet defining a storage compartment with an access opening, a hinge disposed on the cabinet and near a first side wall, and a door. The cabinet includes a first side wall and a second side wall disposed opposite to each other. The hinge is provided with a guide portion and a guide portion, both of which have arc-shaped trajectory lines. The end of the door near the hinge is provided with a first door hinge that cooperates with the guide portion and a second door hinge that cooperates with the guide portion. During the opening process of the door from the closed state, the first door hinge moves in an arc relative to the guide portion, and the second door hinge moves in an arc relative to the guide portion, so that the door moves inward a certain distance. When the door is opened to 90°, the front wall of the door is parallel to the first side wall and is located on the side of the first side wall away from the second side wall. The refrigerator of this invention precisely controls the rotation of the door, so that the door does not extend beyond or excessively extend beyond the side of the cabinet when opened, and the door moves smoothly when opened. Attached Figure Description

[0036] Figure 1 This is a perspective view of the refrigerator of the present invention;

[0037] Figure 2 This is a top view of the refrigerator of the present invention;

[0038] Figure 3 yes Figure 2 A schematic diagram of a partial structure;

[0039] Figure 4 This is a view of the hinge when the door is in the closed state in Embodiment 1 of the refrigerator of the present invention;

[0040] Figure 5 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0041] Figure 6 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0042] Figure 7 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0043] Figure 8 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0044] Figure 9 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0045] Figure 10 This is a schematic diagram showing the movement of the first side edge, the second side edge, and the side sealing edge during the opening process of the refrigerator in Embodiment 1 of the present invention;

[0046] Figure 11 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first door hinge relative to the guide section and the second door hinge relative to the guide section;

[0047] Figure 12 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first door hinge relative to the guide section and the second door hinge relative to the guide section;

[0048] Figure 13 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first door hinge relative to the guide section and the second door hinge relative to the guide section;

[0049] Figure 14 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first door hinge relative to the guide section and the second door hinge relative to the guide section;

[0050] Figure 15 In the refrigerator embodiment of the present invention, the door is opened to... A schematic diagram showing the positions of the first door hinge relative to the guide section and the second door hinge relative to the guide section;

[0051] Figure 16 In the refrigerator embodiment of the present invention, the door is opened from G3 to G... max A schematic diagram showing the movement of the first door hinge relative to the guide part and the second door hinge relative to the guide part during the process;

[0052] Figure 17 This is a schematic diagram showing the positions of the first door hinge relative to the guide portion and the second door hinge relative to the guide portion when the door is opened to different angles in Embodiment 1 of the refrigerator of the present invention;

[0053] Figure 18 This is a schematic diagram of the motion trajectory of the central point I of the axis line segment PQ in Embodiment 1 of the refrigerator of the present invention;

[0054] Figure 19 This is a comparison diagram of the position of the refrigerator door when it is opened to G1 in Embodiment 1 of the present invention and the position of the door when it is rotated from the closed state to G1 with the center point I of its closed axis as the axis of rotation.

[0055] Figure 20 This is a comparison diagram of the position of the refrigerator door when it is opened to G2 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G1 with the center point I of the axis of rotation as the axis of rotation to G2;

[0056] Figure 21 This is a comparison diagram of the position of the refrigerator door when it is opened to G3 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G2 with the center point I of the axis of rotation as the axis of rotation to G3;

[0057] Figure 22 This is a comparison diagram of the position of the refrigerator door when it is opened to G4 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G3 with the center point I of the axis of rotation as the axis of rotation to G4;

[0058] Figure 23 In the refrigerator embodiment of the present invention, the door is opened to G. max The position of the door as it rotates from the open state to the G3 state, with the center point I of the opening state as the axis of rotation, to the G4 state. max Position comparison chart at different times;

[0059] Figure 24 This is a schematic diagram showing the positions of the first door hinge relative to the guide and the second door hinge relative to the guide part during the opening process of the refrigerator in Embodiment 2 of the present invention.

[0060] Figure 25 This is a schematic diagram showing the positions of the first door hinge relative to the guide and the second door hinge relative to the guide when the door is closed and the maximum opening angle of the refrigerator is 90° in Embodiment 2 of the present invention.

[0061] Figure 26 This is a schematic diagram showing the positions of the first door hinge relative to the guide and the second door hinge relative to the guide part during the opening process of the refrigerator in Embodiment 3 of the present invention.

[0062] Figure 27 This is a schematic diagram showing the positions of the first door hinge relative to the guide and the second door hinge relative to the guide part during the opening process of the refrigerator in Embodiment 4 of the present invention.

[0063] Figure 28 This is a schematic diagram showing the positions of the first door hinge relative to the guide and the second door hinge relative to the guide part during the opening process of the refrigerator in Embodiment 5 of the present invention.

[0064] Figure 29 This is a schematic diagram showing the positions of the first door hinge relative to the guide and the second door hinge relative to the guide part during the opening process of the refrigerator in Embodiment 6 of the present invention.

[0065] Figure 30 This is a schematic diagram of the movement of the roller along the convex curve in Embodiment 7 of the refrigerator of the present invention;

[0066] Figure 31 This is an exploded structural diagram of the door end and hinge in Embodiment 8 of the refrigerator of the present invention;

[0067] Figure 32 This is a schematic diagram of the assembly structure of the door end and the hinge in Embodiment 8 of the refrigerator of the present invention;

[0068] Figure 33 This is a schematic diagram of the assembly structure of the hinge and track block that cooperate with the lower end of the door in the refrigerator embodiment nine of the present invention;

[0069] Figure 34 This is an exploded structural diagram of the hinge and track block that cooperate with the lower end of the door in the refrigerator embodiment nine of the present invention;

[0070] Figure 35 This is an exploded structural diagram of the hinge and track block that cooperate with the lower end of the door in the refrigerator embodiment nine of the present invention from another perspective;

[0071] Figure 36 This is an exploded structural diagram of the lower end of the door and the locking block in Embodiment 9 of the refrigerator of the present invention;

[0072] Figure 37 This is a schematic diagram of the locking block in Embodiment 9 of the refrigerator of the present invention;

[0073] Figure 38 This is a schematic diagram of the assembly structure of the lower end of the door and the locking block in Embodiment 9 of the refrigerator of the present invention;

[0074] Figure 39 This is a schematic diagram of the engagement between the hinge and the locking block when the door is closed in Embodiment 9 of the refrigerator of the present invention;

[0075] Figure 40 This is a schematic diagram of the engagement between the hinge and the locking block when the door is closed, from another perspective, in Embodiment 9 of the refrigerator of the present invention.

[0076] Figure 41 In the refrigerator embodiment nine of the present invention, the door is opened to G. B0 A schematic diagram showing the moment when the locking block separates from the hinge;

[0077] Figure 42 In the refrigerator embodiment nine of the present invention, the door is opened to G. B1 A schematic diagram showing the relative positions of the hinge and the locking block;

[0078] Figure 43 This is a schematic diagram showing the relative position of the flip beam and the refrigerator body when the door is opened in Embodiment 10 of the present invention;

[0079] Figure 44 In Embodiment 10 of the present invention, the refrigerator door is closed to G. S At that time, a schematic diagram showing the relative positions of the door body, guide block, and guide part;

[0080] Figure 45 In Embodiment 10 of the present invention, the refrigerator door is closed to G. F At that time, a schematic diagram showing the relative positions of the door body, guide block, and guide part;

[0081] Figure 46 This is G in Embodiment 10 of the refrigerator of the present invention. B1 >G S A diagram illustrating the state of the locking hook and stop, and the guide block and guide.

[0082] Figure 47 This is G in Embodiment 10 of the refrigerator of the present invention. B1 <G F A diagram illustrating the state of the locking hook and stop, and the guide block and guide.

[0083] Figure 48 This is G in Embodiment 10 of the refrigerator of the present invention. B1 =G F A diagram illustrating the state of the locking hook and stop, and the guide block and guide.

[0084] In the above figures: Box body 10; Cabinet 100; Door 30; Front wall of door 31; Side wall of door 32; Rear wall of door 33; First side edge W; Second side edge N; Front panel 34; Hinge plate 40; Connecting part 401; Extension part 402; Stop part 403; Hook gap 404; Mounting hole 405; Transition part 20; Door seal 2; First door hinge 41; Second door hinge 42; Guide center axis P; Guide center axis Q; Guide center O1; Guide center O2; First side edge center O3; Second side edge center O4; Side sealing edge center O5; Guide part 50; Guide trajectory line S; Starting point Guide point P0; First guide point P1; Second guide point P2; Third guide point P3; Fourth guide point P4; Fifth guide point P5; Guide part 60; Guide trajectory line K; Starting guide point Q0; First guide point Q1; Second guide point Q2; Third guide point Q3; Fourth guide point Q4; Fifth guide point Q5; Track block 7; Plate 70; Locking block 6; Hook part 61; Root connection part 62; Insertion plate 63; Door end cover 8; Receiving groove 80; Receiving part 81; First protrusion 82; Second protrusion 83; Gap groove 84; Flip beam 9; Guide block 13; Track groove 14. Detailed Implementation

[0085] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0086] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0087] The terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," "fourth," or "fifth" may explicitly or implicitly include one or more of that feature.

[0088] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0089] In the following description, embodiments of this application will be described in detail with reference to the accompanying drawings. In the drawings, the side of the refrigerator facing the user when in use is defined as the front side, and the opposite side is defined as the rear side.

[0090] Example 1

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

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

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

[0094] The enclosure 10 includes a first side wall and a second side wall (i.e., the left side wall and the right side wall of the enclosure 10) arranged opposite to each other; a hinge is provided on the enclosure 10 and close to the first side wall; the door 30 has a front wall 31 that is away from the enclosure 10 when the door 30 is closed, a rear wall 33 that is opposite to the front wall 31, and a side wall 32 that is close to the hinge and connected to the front wall 31; for example, when the hinge is located on the right side of the enclosure 10, the right side of the door 30 is the side wall 32; when the hinge is located on the left side of the enclosure 10, the left side wall of the door 30 is the side wall 32 when the door 30 is closed.

[0095] The front wall 31 and side wall 32 of the door 30 intersect to form a first side edge W, and the side wall 32 intersects with the rear wall 33 to form a second side wall N. When the door 30 is closed, the first side edge W is located on the side of the second side edge N away from the housing 10. It should be noted that when both the front wall 31 and the side wall 32 are planes, the intersection line of the two planes is the theoretical first side edge W (similarly, the theoretical second side edge N is the intersection line of the two planes of the side wall 32 and the rear wall 33); in actual production and processing, the intersection of the front wall 31 and the side wall 32 is set with a rounded transition, thus forming a curved surface at the intersection of the front wall 31 and the side wall 32. In this application, for ease of description, the theoretical first side edge W and the theoretical second side edge N are used for description. In addition, the plane passing through the center of mass of the door 30 and parallel to the front wall 31 is denoted as the center of mass plane F; during the opening of the door 30, the center of mass plane F moves with the door 30. In this embodiment, the centroid plane F, which is determined by the geometric center of the door body 30, is used for description.

[0096] A door seal 2 is provided on the rear wall of the door 30. When the door 30 is closed, the door seal 2 fits against the front face of the cabinet surrounding the access opening to effectively seal the connection between the door 30 and the cabinet 10, thereby ensuring that the door 30 seals the access opening and preventing cold air from escaping. Optionally, the door seal 2 can be ring-shaped. The door seal 2 includes a side seal near the door side wall 32, and the edge of the door seal 2 (side seal) near the door side wall 32 and away from the front wall 31 is denoted as the side seal edge F.

[0097] Reference Figures 2 to 3 The door body 30 has a first door hinge 41 near the hinge end and a second door hinge 42 located on the side of the first door hinge 41 away from the front wall 31. The hinge has a guide portion 50 and a guide portion 60. The first door hinge 41 is adapted to the guide portion 50, and the second door hinge 42 is adapted to the guide portion 60. During the rotation of the door body 30 to open or close, the first door hinge 41 moves relative to the guide portion 50, and the second door hinge 42 moves relative to the guide portion 60. In this embodiment, the first door hinge 41 moves in an arc relative to the hinge under the guidance of the guide portion 50, and the second door hinge 42 moves in an arc relative to the hinge under the guidance of the guide portion 60.

[0098] The hinge includes a hinge plate 40 fixedly connected to the housing 10. The hinge plate 40 includes a connecting portion 401 connected to the housing 10 and an extension portion 402 extending forward from the connecting portion 401 and in a horizontal plate shape. The connecting portion 401 can be fastened to the top wall of the housing 10 using fasteners such as screws, pins, and bolts. Specifically, for the hinge at the upper end of the door 30, the connecting portion 401 is connected to the top wall of the housing 10. For the hinge at the lower end of the door 30, the connecting portion 401 is connected to the front end face of the housing 10. A guide portion 50 and a guide portion 60 are formed on the extension portion 402.

[0099] The first door hinge 41 and the second door hinge 42 are connected to the end of the door body 30 near the hinge to form a limiting shaft that guides the movement of the door body 30. Specifically, the first door hinge 41 and the second door hinge 42 provided at the end of the door body 30 extend vertically to fit the guide portion 50 or guide portion 60 provided on the hinge.

[0100] In this embodiment, the description is based on the example of hinge plates 40 located at both the upper and lower ends of the door body 30 being provided with guide portions 50 and guide portions 60, and the upper and lower ends of the door body 30 being provided with first door hinges 41 and second door hinges 42. It should be noted that the arrangement in this embodiment is not limited to being provided at both the upper and lower ends of the door body 30 simultaneously; it is arranged as needed to connect the door body 30 and the housing 10.

[0101] In this embodiment, we continue to refer to... Figure 2 The plane (first body sidewall) of the cabinet 10 near the hinge plate 40 is defined as the reference plane M0. The refrigerator is housed in the cabinet 100. The side of the reference plane M0 closest to the cabinet 100 is the outer side, and the opposite side closest to the storage compartment is the inner side. When the door 30 is closed, the front wall 31 of the door is flush with the front face of the cabinet 100 ("flush" includes any case where the distance between the two planes is less than 2mm). When the refrigerator is placed in the cabinet 100 for use, in order to prevent uneven ground and deformation of the cabinet 100, the distance α between the cabinet 100 and the side of the refrigerator (first body sidewall, i.e., reference plane M0) can be set, α∈[3,5], unit: mm. In order to ensure that the refrigerator door 30 can be opened normally, the first side edge W of the door 30 cannot extend too far beyond the side of the cabinet 10 (reference plane M0) during the rotation process, so as to avoid the first side edge W colliding with the cabinet 100 and causing the door 30 to be unable to open normally.

[0102] To meet the above requirements, the door 30 needs to be able to move inward during rotation, so that the first side edge W does not extend too far beyond the side of the housing 10 (reference plane M0). Taking the hinge plate 40 located on the right side of the door 30 as an example, the inside is the left side, meaning the door 30 needs to be able to move to the left; taking the hinge plate 40 located on the left side of the door 30 as an example, the inside is the right side, meaning the door 30 needs to be able to move to the right. In this embodiment, the right side wall of the housing 10 is the first body side wall, described using the reference plane M0.

[0103] like Figure 3 As shown, in this embodiment, the trajectory line of the relative movement of the central axis of the first door hinge 41 guided by the guide part 50 is denoted as the guide trajectory line S, and the trajectory line of the relative movement of the central axis of the second door hinge 42 guided by the guide part 60 is denoted as the guide trajectory line K; wherein, the guide trajectory line S and the guide trajectory line K are both circular arcs with equal radii.

[0104] In this embodiment, the guide part 50 is configured as a guide groove, and the guide part 60 is configured as a guide part. Both the guide groove and the guide part are arc grooves with equal radii, that is, the center trajectory line of the guide groove is the guide trajectory line S, and the center trajectory line of the guide part is the guide trajectory line K. Both the guide trajectory line S and the guide trajectory line K are arcs with equal radii, so that the first door hinge 41, which is adapted to the guide groove, moves in an arc relative to the guide groove, and the second door hinge 42, which is adapted to the guide groove, moves in an arc relative to the guide groove, effectively increasing the smoothness of the door 30 rotating and opening. In some embodiments of this application, the openings of the guide groove and the guide groove formed on the hinge face downwards, which can prevent dust from falling into the groove, effectively ensuring the cleanliness of the guide groove and the guide groove, and avoiding the movement of the limiting shaft located in the groove and cooperating with it due to dust accumulation in the groove, thereby effectively ensuring the long-term smoothness of the door 30 opening. That is, in this embodiment, both the guide part 50 and the guide 60 have a function to shield the door hinge to prevent dust accumulation from causing their relative movement with the corresponding door hinge to be unsmooth.

[0105] It should be noted that the equal radius arcs involved in this invention include standard arcs in the standard mathematical definition, as well as arcs that deviate from the standard arcs in the standard mathematical definition due to processing errors, micro-deformation of parts, or micro-wear, but still have the characteristics of arcs.

[0106] In this embodiment, as Figure 3As shown, within the projection of the plane containing the top wall of the housing 10, the reference plane M0 is taken as the Y-axis, and the straight line located on the front side of the hinge plate 40 and perpendicular to the reference plane M0 is denoted as the X-axis (in this embodiment, the plane passing through the first side edge W and parallel to the retrieval opening when the door 30 is closed is taken as the X-axis, that is, the plane containing the front wall 31 of the door when the door 30 is closed is taken as the X-axis); the X-axis is perpendicular to the Y-axis and intersects at the origin O; the direction of the plane passing through the first side edge W and parallel to the retrieval opening when the door 30 is closed and pointing towards the housing 10 is taken as the positive direction of the Y-axis, and the direction of the first side wall pointing towards the second side wall is taken as the positive direction of the X-axis, forming a two-dimensional coordinate system XOY.

[0107] In the XOY coordinate system, the standard equation of the circle containing the guiding trajectory line S is (x-a1). 2 +(y-b1) 2 =r1 2 The center of the circle containing the guiding trajectory line S is denoted as the guiding center O1.

[0108] The standard equation of the circle containing the guide trajectory line K is (x-a2). 2 +(y-b2) 2 =r2 2 The center of the circle containing the guide trajectory line S is denoted as the guide center O2.

[0109] In some embodiments of this application, r1 < r2, that is, the radius of the circle containing the guide trajectory line S is smaller than the radius of the circle containing the guide trajectory line K, so that while the first door hinge 41 moves in an arc relative to the guide part 50, the second door hinge 42 has a smooth and gentle movement trend relative to the guide part 60 (the curvature of the guide trajectory line K is small), thereby improving the smoothness and stability of the door 30 opening.

[0110] In some embodiments of this application, a1 > a2, b1 < b2, r1 < r2; that is, the guide center O2 is located near the guide center O1 on the side of the first body sidewall and the pick-and-place port.

[0111] In this embodiment, the guide trajectory line S extends from the front wall 31 to the rear wall 32 of the door when the door 30 is closed; the guide trajectory line K extends from the side wall of the first body to the side wall of the second body; and the guide trajectory line K may be located on the side of the guide trajectory line S near the pick-up and put-out opening.

[0112] As a configurable configuration, the guide center O1 is located on the side of the guide trajectory line S away from the sidewall of the first body; that is, the guide trajectory line S is an arc protruding towards the sidewall of the first body. The guide center O2 is located on the side of the guide trajectory line K away from the pick-up / placement port; that is, the guide trajectory line K is an arc protruding towards the pick-up / placement port.

[0113] In some embodiments of this application, the guide trajectory line S has a starting guide point P0, a first guide point P1, a second guide point P2, a third guide point P3, a fourth guide point P4, and a fifth guide point P5 that are sequentially close to the pick-up / placement opening; that is, the starting guide point P0, the first guide point P1, the second guide point P2, the third guide point P3, the fourth guide point P4, and the fifth guide point P5 are all on circle O1. In some embodiments of this application, along the direction from the front wall 31 of the door body 30 to the pick-up / placement opening when the door body 30 is closed (along the positive Y-axis), the distance between the guide trajectory line S and the side wall of the first body first decreases and then increases; among them, the distance between the third guide point P3 and the side wall of the first body is the smallest. The guide trajectory line S extends from the starting guide point P0 in an arc along the direction close to the side wall of the first body and the pick-up / placement opening, passing through the first guide point P1, the second guide point P2 to the third guide point P3, and then extends in an arc along the direction away from the side wall of the first body and close to the pick-up / placement opening, passing through the fourth guide point P4 to the fifth guide point P5.

[0114] The guide trajectory line K has a starting guide point Q0, a first guide point Q1, a second guide point Q2, a third guide point Q3, a fourth guide point Q4, and a fifth guide point Q5, which are sequentially located away from the sidewall of the first body; that is, the starting guide point Q0, the first guide point Q1, the second guide point Q2, the third guide point Q3, the fourth guide point Q4, and the fifth guide point Q5 are all on circle O2. In some embodiments of this application, along the direction from the sidewall of the first body to the sidewall of the second body (along the positive X-axis), the distance between the guide trajectory line K and the pick-up / placement port first decreases and then increases; among them, the distance between the second guide point Q2 and the pick-up / placement port is the smallest. The guide trajectory line K extends from the starting guide point Q0 in an arc, passing through the first guide point Q1 to the second guide point Q2, and then extends in an arc, passing through the third guide point Q3 and the fourth guide point Q4 to the fifth guide point Q5, in a direction away from the sidewall of the first body and the pick-up / placement port.

[0115] like Figure 3 As shown, the distance between the initial guide point P0 and the retrieval / placement opening is denoted as D0, and the distance between the fifth guide point P5 and the retrieval / placement opening is denoted as D1; ​​the distance between the initial guide point Q0 and the retrieval / placement opening is denoted as Z0, and the distance between the fifth guide point Q5 and the retrieval / placement opening is denoted as Z1. Wherein, Z0 < D1 ≤ Z1 < D0. The above settings effectively ensure that, in this embodiment, with both the guide trajectory line S and the guide trajectory line K being arcs, the maximum opening angle of the door 30 is not less than 90°, facilitating the retrieval and placement of items.

[0116] In some embodiments of this application, the second door hinge 42 is located on the side of the first door hinge 41 near the rear wall 33 of the door, and the guide portion 50 is located on the side of the guide portion 60 away from the retrieval opening; the first door hinge 41 moves in an arc relative to the guide portion 50, and the second door hinge 42 moves in an arc relative to the guide portion 60, so that the door body 30 can move a certain distance inward (towards the side wall of the second body) while rotating, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door body 30, so as to limit the distance of the first side edge W beyond the reference plane M0, and effectively avoid interference between the door body 30 and the cabinet 100 when the door body 30 is opened.

[0117] In some embodiments of this application, in the projection of the top wall of the housing 10, when the door 30 is closed, the straight line containing the central axis of the first door hinge 41 and the central axis of the second door hinge 42 is parallel to the side wall of the first body. That is, when the door 30 is closed, the straight line containing the central axis of the first door hinge 41 and the central axis of the second door hinge 42 is parallel to the Y-axis. As an alternative configuration, when the door 30 is closed, the front wall 31 is parallel to the plane containing the retrieval opening, the side wall 32 is perpendicular to the front wall 31, and the side wall 32 is parallel or flush with the side wall of the first body; that is, in the projection of the top wall of the housing 10, the side wall 32 of the door 30 when closed coincides with or is parallel to the Y-axis. It should be noted that the above "parallelism" includes parallelism in the standard mathematical definition, as well as the relationship between two surfaces with an angle of less than 3° due to processing errors, component micro-deformation, or micro-wear. With the above structural configuration, during the opening of the door 30, the first door hinge 41 moves relative to the guide part 50 towards the rear wall 33 of the door, and the second door hinge 42 moves relative to the guide part 60 away from the side wall of the first body, so that the door moves inward a certain distance.

[0118] Since there is a relative motion relationship between the guide portion 50 and the first door hinge 41, and between the guide portion 60 and the second door hinge 42, if the door 30 is opened with the guide portion 50 and the guide portion 60 as stationary reference points, it is equivalent to the first door hinge 41 moving under the restriction of the guide portion 50, and the second door hinge 42 moving under the restriction of the guide portion 60. For ease of description, this application uses the guide portion 50 and the guide portion 60 as stationary reference points, and the first door hinge 41 and the second door hinge 42 moving relative to the reference points for explanation.

[0119] In this embodiment, the central axis of the first door hinge 41 is denoted as the guiding central axis P, and the central axis of the second door hinge 42 is denoted as the guiding central axis Q; within the projection of the plane containing the top wall of the housing 10, line segment PQ is denoted as the axis center line segment PQ; the center of the axis center line segment PQ is denoted as the axis center point I. For example... Figures 4-18As shown, the movement of the first door hinge 41 along the guide portion 50 is equivalent to the movement of the guide center axis P along the guide trajectory line S, and the movement of the second door hinge 42 along the guide portion 60 is equivalent to the movement of the guide center axis Q along the guide trajectory line K. This allows the door 30 to move a certain distance inward (towards the side wall of the second body) while rotating, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, effectively preventing interference between the door 30 and the cabinet 100 when the door is opened. The movement of the door 30 relative to the cabinet 10 is equivalent to the relative movement between the two in the plane where the top wall of the cabinet 10 is located (or in the plane parallel to the top wall of the cabinet 10 (two-dimensional coordinate system XOY)); that is, the movement of the door 30 relative to the cabinet 10 is a relative movement in a two-dimensional plane. Since the first door hinge 41 and the second door hinge 42 are fixed on the door body 30, in the plane where the top wall of the box body 10 is located, the movement of the axis line segment PQ relative to the hinge is the same as the movement of the door body 30 relative to the hinge, and also the same as the movement of the door body 30 relative to the box body 10.

[0120] In the following description, for ease of explanation, the motion of the axis segment PQ relative to the hinge is selected in the plane where the top wall of the housing 10 is located to represent the motion of the door 30 relative to the housing 10.

[0121] In the embodiments of this application, in the plane where the top wall of the box 10 is located, the door 30 rotates around a changing point during the opening process, and the changing point is the center of the axis line segment PQ; that is, in this embodiment, in the plane where the top wall of the box 10 is located, the door 30 rotates around the changing axis center point I.

[0122] like Figure 4 As shown, in this embodiment, when the door 30 is in the closed state, the central axis (guide central axis P) of the first door hinge 41 is located at the starting guide point P0 of the guide trajectory line S, and the central axis (guide central axis Q) of the second door hinge 42 is located at the starting guide point Q0 of the guide trajectory line K. That is, when the door 30 is in the closed state, the first door hinge 41 is located at the end of the guide portion 50 away from the retrieval opening, and the second door hinge 42 is located at the end of the guide portion 60 near the side wall of the first body; the first door hinge 41 is located on the side of the second door hinge 42 away from the retrieval opening. In some embodiments of this application, in the projection of the top wall of the housing 10, when the door 30 is closed, P0Q0 is parallel to the side wall of the first body.

[0123] In this embodiment, under the constraints of the guide portion 50 and the first door hinge 41, and the guide portion 60 and the second door hinge 42, the refrigerator is opened at its maximum angle G. max The angle >90° will be used as an example. The door 30 opens from the closed state to its maximum angle G. max During the process, when the door 30 rotates open to a specific angle, the relative positions of the first door hinge 41 relative to the guide part 50 and the relative positions of the second door hinge 42 relative to the guide part 60 are as follows:

[0124] In the following explanation, This indicates the opening angle of door 30, and the opening angle when door 30 is closed. The door 30 opens relative to the box 10 at the angle when the access opening is open. It is a positive number;

[0125] like Figure 4 As shown, At this time, the door 30 is in the closed state; the guide center axis P is located at the starting guide point P0 of the guide trajectory line S, the guide center axis Q is located at the starting guide point Q0 of the guide trajectory line K, and the center point I of the axis is located at the starting center point I0 relative to the hinge.

[0126] like Figure 5 As shown, During this process, the door 30 rotates from the closed state to G2 and opens. During the opening process, the first door hinge 41 moves in an arc along the guide trajectory line S toward the side wall of the first body and the pick-up / placement opening, and the second door hinge 42 moves in an arc along the guide trajectory line K toward the side wall of the first body and toward the pick-up / placement opening.

[0127] The above describes the door opening angle of 30 degrees. At the same time, the movement trend within the opening angle range remains consistent; the only difference lies in the position of the first door hinge 41 relative to the guide trajectory line S, and the position of the second door hinge 42 relative to the guide trajectory line K, depending on the opening angle. Thus, the opening angle... When the door is opened to the corresponding section, selecting one of the opening angles can represent the relative positions of the first hinge 41 and guide portion 50, and the second hinge 42 and guide portion 60; specifically, for example... Figure 5 and Figure 11 As shown, with This represents the position within the opening angle range, for comparison with other states when the door 30 is opened.

[0128] like Figure 5 and Figure 11 As shown, When the door 30 rotates open to G1, the guide center axis P is located at the first guide point P1 on the guide trajectory line S. The first guide point P1 is located on the side of the starting guide point P0 near the side wall of the first body and the pick-up / placement opening. The guide center axis Q is located at the first guide point Q1 on the guide trajectory line K. The first guide point Q1 is located on the side of the starting guide point Q0 away from the side wall of the first body and near the pick-up / placement opening. The center point I of the axis moves with the axis center line segment PQ to the first midpoint I1. The first midpoint I1 is located on the side of the starting midpoint I0 away from the side wall of the first body. In some embodiments of this application, the first midpoint I1 is also located on the side of the starting midpoint I0 near the pick-up / placement opening. In the process of the door 30 opening from the closed state to G2, the first door axis 41 moves in an arc along the guide trajectory line S towards the side wall of the first body and the pick-up / placement opening, and the second door axis 42 moves in an arc along the guide trajectory line K towards the side wall of the first body and near the pick-up / placement opening. G1 can be set to any value in [5°, 9°].

[0129] like Figure 6 and Figure 12 As shown, At that time, the door 30 rotates and opens to G2; during the entire opening process of the door 30, the distance between the guide center axis Q and the pick-up / place-out port is minimized when the door 30 is opened to G2. At this time, the guide center axis P is located at the second guide point P2 on the guide trajectory line S. The second guide point P2 is located on the side of the first guide point P1 that is close to the side wall of the first body and the pick-up / placement opening. The guide center axis Q is located at the second guide point Q2 on the guide trajectory line K. The second guide point Q2 is located on the side of the first guide point Q1 that is away from the side wall of the first body and close to the pick-up / placement opening. Among them, the second guide point Q2 is the point with the smallest distance between the guide trajectory line K and the pick-up / placement opening; that is, at this time, the position of the guide center axis Q is the position closest to the pick-up / placement opening during the opening of the door body 30. The center point I of the axis moves to the second center point I2 with the axis center line segment PQ. The second center point I2 is located on the side of the first center point I1 that is away from the side wall of the first body. In some embodiments of this application, the second center point I2 is also located on the side of the first center point I1 that is close to the pick-up / placement opening. As described above, during the process of the door 30 opening from G1 to G2, the first door hinge 41 moves in an arc along the guide trajectory line S towards the side wall of the first body and the pick-up / placement opening, while the second door hinge 42 moves in an arc along the guide trajectory line K away from the side wall of the first body and towards the pick-up / placement opening. G2 can be set to any value in [23°, 27°]; in this embodiment, when G2 = 25°, the distance between the guide center axis Q and the pick-up / placement opening is minimized.

[0130] like Figure 7 and Figure 13 As shown, When the door 30 rotates and opens to G3, the distance between the guide center axis P and the side wall of the first body is minimized when the door 30 is opened to G3. The guide center axis P is located at the third guide point P3 on the guide trajectory line S. The third guide point P3 is located on the side of the second guide point P2 that is closer to the side wall of the first body and the retrieval port. The third guide point P3 is the point where the distance between the guide trajectory line S and the side wall of the first body is minimized. That is, the position of the guide center axis P at this time is the position closest to the side wall of the first body during the opening process of the door 30. The guide center axis Q is located at the third guide point Q3 on the guide trajectory line K. The third guide point Q3 is located on the side of the second guide point Q2 that is away from the side wall of the first body and the retrieval port. The center point I of the axis moves with the axis line segment PQ to the third midpoint I3. The third midpoint I3 is located on the side of the second midpoint I2 that is away from the side wall of the first body. In some embodiments of this application, the third midpoint I3 is also located on the side of the second midpoint I2 that is closer to the retrieval port.

[0131] As described above, during the process of the door 30 opening from G2 to G3, the first door hinge 41 moves in an arc along the guide trajectory line S towards the side wall of the first body and the retrieval opening, while the second door hinge 42 moves in an arc along the guide trajectory line K away from the side wall of the first body and the retrieval opening. G3 can be set to any value in [41°, 45°]; in this embodiment, G3 = 43°.

[0132] like Figure 8 and Figure 14 As shown, At this time, the door 30 rotates and opens to G4; the guide center axis P is located at the fourth guide point P4 on the guide trajectory line S, and the fourth guide point P4 is located on the side of the third guide point P3 away from the side wall of the first body and close to the retrieval port; the guide center axis Q is located at the fourth guide point Q4 on the guide trajectory line K, and the fourth guide point Q4 is located on the side of the third guide point Q3 away from the side wall of the first body and the retrieval port; the center point I of the axis moves with the axis center line segment PQ to the fourth midpoint I4, and the fourth midpoint I4 is located on the side of the third midpoint I3 away from the side wall of the first body; in some embodiments of this application, the fourth midpoint I4 is also located on the side of the third midpoint I3 away from the retrieval port. During the process of the door 30 opening from G3 to G4, the first door hinge 41 moves in an arc along the guide trajectory line S in a direction away from the side wall of the first body and the retrieval port, and the second door hinge 42 moves in an arc along the guide trajectory line K in a direction away from the side wall of the first body and the retrieval port. In some embodiments of this application, the line containing P0P4 is parallel to the sidewall of the first body, that is, P0, P4, and Q0 are collinear and parallel to the sidewall of the first body. In some embodiments of this application, P4Q4 is parallel to the plane containing the pick-up and drop-off port, that is, P4Q4 is perpendicular to the sidewall of the first body, and G4 = 90°.

[0133] In some embodiments of this application, combined with Figure 8 and Figure 12As shown, when the door 30 is closed, the guide center axis P is located at the starting positioning point P0 of the guide trajectory line S; the distance between the starting positioning point P0 and the reference plane M0 is L1. The front wall 31 of the door is parallel to the plane where the pick-up and drop-off opening is located;

[0134] When the door 30 is opened to G4 = 90°, the front wall 31 of the door is parallel to the side wall of the first body; the guide center axis P is located at the fourth positioning point P4 of the guide trajectory line S; the distance between the fourth positioning point P4 and the front wall 31 of the door is L2.

[0135] It can be set such that when L1 < L2, when the door 30 is opened to 90°, the front wall 31 of the door protrudes beyond the outer side of the first body side wall of the cabinet 10. As another feasible method, 0 ≤ L2 - L1 ≤ 3mm can be used to cover the bulges on the cabinet 10 caused by foaming, effectively concealing the flaws and improving the aesthetics of the refrigerator.

[0136] It should be noted that, in this application example, "parallel" is specifically defined as two planes with an included angle of 0° to 3°. That is, two planes with an included angle of 0° to 3° are defined as parallel. "Aligned" is specifically defined as any value where the maximum distance between two planes is less than 2mm. "Perpendicular" is specifically defined as two planes with an included angle of 89° to 91°. This definition applies to the entire application.

[0137] like Figure 9 and Figure 15 As shown, At that time, the door 30 rotates open to G. max The guide center axis P is located at the fifth guide point P5 on the guide trajectory line S. The fifth guide point P5 is located on the side of the third guide point P3 away from the first body sidewall and close to the pick-and-place port. The guide center axis Q is located at the fifth guide point Q5 on the guide trajectory line K. The fifth guide point Q5 is located on the side of the fourth guide point Q4 away from the first body sidewall and the pick-and-place port. The center point I of the axis moves to the fifth center point I5 with the axis center line segment PQ. The fifth center point I5 is located on the side of the fourth center point I4 away from the first body sidewall. In some embodiments of this application, the fifth center point I5 is also located on the side of the fourth center point I4 away from the pick-and-place port. The door 30 is opened from G4 to G... max During the process, the first door hinge 41 moves in an arc along the guide trajectory line S, moving away from the side wall of the first body and the pick-up / placement opening. The second door hinge 42 moves in an arc along the guide trajectory line K, moving away from the side wall of the first body and the pick-up / placement opening. G is configurable. max Any value in [100°, 125°].

[0138] In this embodiment, the door 30 is opened to its maximum angle G. maxAt this time, the first door hinge 41 is located at the end of the guide portion 50 away from the front wall 31; the second door hinge 42 is located on the side of the first door hinge 41 away from the first body side wall, and at the end of the guide portion 60 away from the first body side wall. As one possible configuration, the maximum opening angle G of the door 30 is... max The angle should be no less than 100° to facilitate picking up objects.

[0139] As a configurable method, the door 30 opens to its maximum angle G. max At that time, in the projection of the plane containing the top wall of the box 10, the axis line segment PQ is perpendicular to the side wall of the first body.

[0140] As a configurable method, the door 30 opens to its maximum angle G. max At that time, in the projection of the plane where the top wall of the housing 10 is located, the guide center axis Q is located on the side of the guide center axis P away from the side wall of the first body and the pick-up and drop-off port.

[0141] As another configurable method, the door opens to its maximum angle G. max At that time, in the projection of the plane containing the top wall of the housing 10, the straight line containing the guide center axis Q and the guide center axis P is parallel to the plane containing the pick-up and drop-off port.

[0142] In this embodiment, 0° < G1 < G2 < G3 < G4 < G max The above G1, G2, G3, G4, G max They are sequentially denoted as the first angle, the second angle, the third angle, the fourth angle, and the maximum angle.

[0143] In the above embodiments, when the door 30 is opened to the maximum angle G max During the opening process, the first door hinge 41 moves continuously relative to the guide part 50, and makes a unidirectional arc movement towards the retrieval opening; the second door hinge 42 moves continuously relative to the guide part 60, and makes a unidirectional arc movement away from the side wall of the first body. That is, throughout the entire opening process of the door 30, both the first door hinge 41 and the second door hinge 42 maintain unidirectional movement without reversing direction, ensuring that the force direction of the first door hinge 41 and the second door hinge 42 remains consistent throughout the opening process, resulting in a better feel when opening and closing the door and improving the user experience. Furthermore, this extends the lifespan of the guide part 50 and the guide part 60. Moreover, throughout the entire opening process of the door 30, the first door hinge 41 and the second door hinge 42 maintain a unidirectional arc movement, ensuring that the door 30 does not experience acceleration during stopping and re-moving, thus improving the smoothness of the door 30's movement.

[0144] Based on the positions of the two limiting shafts (first door shaft 41 and second door shaft 42) relative to the limiting parts (guide part 50 and guide part 60) when the door 30 is opened to a specific angle, it can be seen that the cooperation relationship between the first door shaft 41 and the guide part 50 is as follows: during the process of opening the door 30 from the closed state to G3, the first door shaft 41 moves along the guide part 50 towards the side wall of the first body and the retrieval port; when the door 30 is opened from G3 to G... max During the process, the first door hinge 41 moves along the guide portion 50 in a direction away from the side wall of the first body and closer to the pick-up / drop-off port. The relative movement in these two stages will be explained below from the perspective of the cooperation relationship between the first door hinge 41 and the guide portion 50, and between the second door hinge 42 and the guide portion 60:

[0145] (1) The first stage, combined with Figures 4-7 , Figures 11-13 ,like Figures 17-18 As shown, the process of the door 30 rotating from the closed state to G3.

[0146] In this first stage, the door 30 opens from 0° through G1 and G2 to G3. During this process, the guide center axis P moves in an arc from the starting guide point P0 along the guide trajectory line S toward the side wall of the first body and the pick-up / placement opening; the guide center axis Q moves in an arc from the starting guide point Q0 along the guide trajectory line K, first toward the side wall of the first body and toward the pick-up / placement opening, and then moves in an arc away from the side wall of the first body and away from the pick-up / placement opening.

[0147] Specifically, the guiding center axis P moves from the starting guiding point P0 along the guiding trajectory line S, passing through the first guiding point P1 and the second guiding point P2 to the third guiding point P3; the guiding center axis Q moves from the starting guiding point Q0 along the guiding trajectory line K, passing through the first guiding point Q1 and the second guiding point Q2 to the third guiding point Q3.

[0148] During the opening process in the first stage described above, with the hinge (guide part 50 and guide part 60) as the reference, as the door 30 opens from 0° to G3, the movement trend of the central point I along the axis line segment PQ is I0→I1→I2→I3. That is, during the opening process of the door 30, the central point I moves inward relative to the hinge. During this opening process, the axis line segment PQ rotates clockwise from P0Q0 and moves inward sequentially to P1Q1, P2Q2, and P3Q3. That is, the movement trend of the axis line segment PQ is P0Q0→P1Q1→P2Q2→P3Q3.

[0149] Since the guide part 50 and the guide part 60 are mounted on the hinge fixed to the cabinet 10, and the axis segment PQ represents the movement of the door 30, it can be concluded that: with the cabinet 10 as the reference, during the entire process of opening the door 30 from the closed state to G3, the door 30 rotates clockwise and moves inward relative to the cabinet 10. That is, the arrangement of this embodiment realizes that the door 30 opens and moves inward a certain distance at the same time, compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, and effectively avoiding interference between the door 30 and the cabinet 100.

[0150] During the opening process in the first stage described above, based on the changing trend of the movement trajectory of the second door hinge 42 relative to the guide part 60, the first stage is divided into two opening segments; specifically, the first stage includes a first segment and a second segment. The specific movement of each segment is as follows:

[0151] In the first segment, the door 30 is opened from the closed state to G2; during this process, the guide center axis Q moves in an arc from the starting guide point Q0 along the guide trajectory line K in a direction away from the side wall of the first body and closer to the pick-up and drop-off port.

[0152] In the second segment, the door 30 is opened from G2 to G3; during this process, the guide center axis Q moves from the second guide point Q2 along the guide trace K in a direction away from the side wall of the first body and the pick-up / drop-off port.

[0153] Combining the first and second segments, it is concluded that during the entire opening process of the door 30, the distance between the guide center axis Q and the pick-up / place-out port is minimized when the door 30 is opened to G2.

[0154] (2) The second stage, combined with Figures 7-9 ,like Figures 13-18 As shown, door 30 is rotated open from G3 to G... max The process.

[0155] Door 30 is opened from G3 to G max During this process, the guide center axis P moves in an arc from the third guide point P3 along the guide trajectory line S toward the direction away from the side wall of the first body and toward the pick-up / placement port; the guide center axis Q moves in an arc from the third guide point Q3 along the guide trajectory line K toward the direction away from the side wall of the first body and the pick-up / placement port.

[0156] Specifically, the guide center axis P moves from the third guide point P3 along the guide trajectory line S, passing through the fourth guide point P4 to the fifth guide point P5; the guide center axis Q moves from the third guide point Q3 along the guide trajectory line K, passing through the fourth guide point Q4 to the fifth guide point Q5.

[0157] During the second stage of opening, with the hinges (guide part 50 and guide part 60) as the reference, the door 30 opens from G3 to G... maxDuring the process, the central point I moves inward relative to the hinge as the central line segment PQ moves, with the movement trend being I3→I4→I5. That is, during the opening of the door 30, the central point I moves inward relative to the hinge. During this opening process, the central line segment PQ rotates clockwise from P3Q3 and moves inward sequentially to P4Q4 and P5Q5. That is, the movement trend of the central line segment PQ is P3Q3→P4Q4→P5Q5.

[0158] Since the guide part 50 and the guide part 60 are mounted on the hinge fixed to the housing 10, and the axis segment PQ represents the movement of the door 30, it can be concluded that: with the housing 10 as the reference, the door 30 opens from G3 to G... max Throughout the process, the door 30 rotates clockwise and moves inward relative to the cabinet 10. That is, the configuration of this embodiment enables the door 30 to open and move inward a certain distance at the same time, compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, and effectively avoiding interference between the door 30 and the cabinet 100.

[0159] In summary, door 30 opens from the closed state to G. max Throughout the process, the door 30 rotates around a dynamically changing point that moves inward throughout the entire process (the movement trend of the center point I is I0→I1→I2→I3→I4→I5), thereby causing the door 30 to move inward. In addition, with the cabinet 10 as a stationary reference, the door 30 always has a tendency to move inward, in order to compensate for the outward displacement of the first side edge W caused by the simple rotation of the door 30, effectively avoiding interference between the door 30 and the cabinet 100 when the door is opened.

[0160] See Figure 17 and Figure 18 The movement trend diagram of the central point I on the central axis; In some embodiments of this application, during the opening process of the door 30, the central point I on the central axis first moves away from the side wall of the first body and closer to the pick-up and drop-off port, and then moves away from the side wall of the first body and the pick-up and drop-off port. That is, when the door 30 opens, it has a tendency to move inward and backward first, and then inward and forward.

[0161] When door 30 opens to G', the distance between the center point I and the pick-up / placement opening is minimized; where G' ∈ [G3, G4], the center point I at this time lies on the segment from I3 to I4 of the center point trajectory line. During the process of door 30 opening from the closed state to G', the center point I moves inward and towards the pick-up / placement opening; when door 30 opens from G' to G... max During the process, the pivot point I moves inward and away from the retrieval opening to increase the distance between the door 30 and the cabinet 10, thereby reducing the maximum opening angle G of the cabinet 100 on the door 30 caused by the inward movement of the door 30 during the opening from the closed state to G'. max The limitation effectively increases the maximum opening angle G of the door by 30 degrees.max This makes it convenient for users to retrieve their items.

[0162] When door 30 is installed inside cabinet 100, door 30 moves from 90° to its maximum angle G. max As the door continues to open, assuming that the door 30 rotates only around the central axis of the fixed first door hinge 41, and constrained by the cabinet 100, the maximum angle that the door 30 can open is denoted as G'. max .

[0163] In this embodiment, when the door 30 is opened to 90°, the side wall 32 of the door is parallel to (approximately parallel to) the plane containing the retrieval opening, and the front wall 31 of the door is parallel to (approximately parallel to) the reference plane M0, with an angle of less than 3° between the two planes. The door 30 moves from 90° to its maximum angle G... max As the opening continues, the pivot point I moves away from the side wall of the first body and the access opening (I4→I5), meaning the door 30 has a tendency to move inward and forward, that is, the door 30 moves away from the cabinet 100 and the cabinet body 10. When the refrigerator is installed inside the cabinet 100, due to the limitations of the cabinet 100, the maximum angle that the door 30 can open is denoted as G. max In this embodiment, the door 30 is positioned such that it moves from 90° to the maximum angle G. max During the process, it moves inward and forward to reduce the restrictive effect of the cabinet 100 on the door 30, so that the maximum opening angle G of the door 30 can be maximized. max Larger; that is, G max >G` max .

[0164] As a configurable method, during the opening of the door 30, the displacement of the first door hinge 41 moving towards the pick-up / placement opening is a positive number, and the displacement of the first door hinge 41 moving away from the pick-up / placement opening is a negative number.

[0165] During the process of opening the door 30 from the closed state to G1, the displacement of the door 30 relative to the box 10 near the loading and unloading port (the displacement generated along the Y-axis direction) for each unit angle of rotation of the door 30 is denoted as ξ1; where ξ1 > 0;

[0166] During the process of the door 30 opening from G1 to G2, the displacement of the door 30 relative to the box 10 near the loading and unloading port (the displacement generated along the Y-axis direction) for each unit angle of rotation of the door 30 is denoted as ξ2; where ξ2>0; where ξ2<ξ1.

[0167] In some embodiments of this application, a first mating part is provided at the end of the hinge away from the side wall of the first body, and a second mating part is provided at the lower end of the door body 30. The second mating part is used to cooperate with the first mating part to lock and unlock the door body 30 and the housing 10. Specifically, the first mating part is a stop part provided on the side of the hinge away from the side wall of the first body, and the second mating part is a hook part provided on the door body 30.

[0168] During the process of opening the door 30 from the closed state to G1, the first mating part and the second mating part gradually separate. During this process, the door 30 moves inward and moves quickly towards the side closer to the pick-up and put-out opening to reduce the effect of the first mating part on the second mating part, reduce the deformation of the second mating part, reduce the resistance to the separation of the first mating part and the second mating part, thereby accelerating the separation of the first mating part and the second mating part.

[0169] During the process of the door 30 opening from G1 to G2, the displacement of the door 30 relative to the container 10 near the pick-up / placement opening decreases by a unit angle of rotation (ξ2<ξ1). This effectively avoids interference between the door sidewall 33 and the container 10 caused by the rotation of the door sidewall 33 towards the pick-up / placement opening, thus ensuring the effectiveness of the door 30's rotational opening.

[0170] In some embodiments of this application, combined with Figures 4-9 As shown, the door body 30 is rotated from the closed state to open to the maximum angle G. max During the process, the centroid plane F lies entirely between the first door hinge 41 and the second door hinge 42. That is, the door body 30 is positioned between the first door hinge 41 and the second door hinge 42 throughout its entire opening stroke (0°~G°). max In this configuration, the centroid plane F is always located between the first door hinge 41 and the second door hinge 42, resulting in better force distribution on the door body 30 and more stable door opening.

[0171] As a possible configuration, within the projection of the top wall of the housing 10, the centroid plane F is the perpendicular bisector of the axis line segment PQ. During the opening process of the door 30 from the closed state, as the opening angle increases, the torque of the door 30 increases, the stability of the door 30 deteriorates, and it is prone to wobbling; in this embodiment, the door 30 opens from the closed state to G... max Throughout the entire process (not less than 90°), the centroid plane F is located between the first door hinge 41 and the second door hinge 42 (or even passes through the center of the axis line segment PQ), effectively enhancing the stability of the door 30 during the entire opening process.

[0172] In some embodiments of this application, combined with Figure 3In this embodiment, the angle bisector of the angle formed by the front wall 31 and the side wall 32 is denoted as the angle bisector H, and the dihedral angle formed by the plane where the front wall 31 is located and the plane where the side wall 32 is located is the first included angle σ = 90°. During the opening process of the door 30 relative to the box 10, the angle bisector H moves with the door 30 relative to the box 10.

[0173] The central axis of the first door hinge 41 is configurable and located on the angle bisector H. That is, the angle bisector H passes through the guide central axis P. In other words, in the projection of the top wall of the cabinet 10, the guide central axis P is located on the angle bisector H. This configuration can prevent the first side edge W from exceeding the reference plane M0 by the maximum distance during the rotation and opening of the door 30, effectively avoiding interference between the door 30 and the cabinet 100. In addition, the guide central axis P being located on the angle bisector H facilitates the inspection of whether the first door 41 and the second door hinge 42 meet the processing accuracy requirements after they are formed on the door 30, thereby achieving a high-precision fit to meet the complex movement of the door 30 to complete rotation and inward movement with fine control.

[0174] In some embodiments of this application, when the guide center axis P moves to the midpoint of the guide trajectory line S, the guide center axis Q moves to the midpoint of the guide trajectory line K. The arrangement of the guide trajectory line S and the guide trajectory line K makes the movement of the first door hinge 41 and the second door hinge 42 more balanced during the opening process of the door 30, further improving the smoothness of the door 30 opening.

[0175] As a configurable method, the midpoint of the guide trajectory line S is the point with the smallest distance from the side wall of the first body, that is, the midpoint of the guide trajectory line S is the third positioning point P3; the midpoint of the guide trajectory line K is the third guide point Q3; that is, P3 is... The midpoint, Q3 is The midpoint. That is, the guide trajectory line S ends at the fourth guide point P4, and the guide trajectory line K ends at the fourth guide point Q4.

[0176] As an optional configuration, when the guide center axis P moves to the midpoint of the guide trajectory line S, and the guide center axis Q moves to the midpoint of the guide trajectory line K, the maximum opening angle G of the door 30 is... max ∈[90°, 125°] any value; the above settings effectively ensure the maximum opening angle of the door 30, making it convenient for users to pick up and put down items.

[0177] As an feasible approach, combining Figures 4-10 As shown, in this embodiment, a first reference plane M1 and a second reference plane M2 are further defined. See also... Figure 10As shown, the first reference plane M1 is a plane parallel to the reference plane M0 and perpendicular to the plane containing the access opening. The first reference plane M1 is located outside the reference plane M0, and the distance between the two planes is α. That is, the first reference plane M1 is the plane containing the inner wall of the cabinet 100 near the box 10; the second reference plane M2 is the plane containing the access opening of the storage room. The first reference plane M1 and the second reference plane M2 do not move during the opening of the door 30 relative to the box 10, and are reference planes that remain stationary relative to the box 10.

[0178] During the opening of the door 30, the first side edge W moves along with the opening of the door 30, and its trajectory is denoted as the first side edge trajectory line T. In this embodiment, the first side edge trajectory line T is an arc in the projection on the top wall of the box 10; that is, the first side edge W moves in an arc during the opening of the door 30. In this embodiment, the center of the circle containing the first side edge trajectory line T is denoted as the center O3 of the first side edge. In the projection on the top wall of the box 10, the straight line containing the center O3 of the first side edge and the center O1 of the guide trajectory line S is denoted as O1O3. The straight line O1O3 is perpendicular to the reference plane M0. That is, when the door 30 is closed, with the front wall 31 parallel to the loading and unloading opening and the front wall 31 perpendicular to the side wall 32 and the first body side wall, the straight line O1O3 is parallel to the front wall 31 when the door 30 is closed.

[0179] In some embodiments of this application, in the projection of the top wall of the housing 10, the center O3 of the first side edge is on the side of the guide center O1 close to the side wall of the first body.

[0180] During the opening process of the door 30, as the opening angle of the door 30 increases, the first side edge W first moves in an arc towards the first reference plane M1 and the second reference plane M2, and then moves in an arc towards the first reference plane M1 and away from the second reference plane M2.

[0181] In this embodiment, in the projection on the top wall of the housing 10, the opening angle of the door 30 is 0°, G1, G2, G3, G4, G... max When the first lateral edge W is located, its position is recorded as W0, W1, W2, W3, W4, W5 in sequence; among them, W0, W1, W2, W3, W4, and W5 are all on circle O3.

[0182] The line containing the starting guide point P0 and the fourth guide point P4 is denoted as the first line P0P4; the first line P0P4 is parallel to the side wall of the first body; that is, the first line P0P4 is perpendicular to the pick-up and put-out port; the line containing W0W4 is denoted as the second line W0W4; as an optional configuration, the first line P0P4 and the second line W0W4 are parallel.

[0183] The radius of the circle containing the trajectory line T of the first side edge is denoted as r3, where r3 > r1; as an optional configuration, r3:r1∈[2, 2.5]. In the above embodiment, the movement trajectory of the first side edge W is smooth, effectively avoiding collision with the cabinet 100 during the opening of the door 30, thus realizing the embedded design of the refrigerator.

[0184] During the opening of the door 30, the second side edge N moves along with the opening of the door 30, and its trajectory is denoted as the second side edge trajectory line E. In this embodiment, in the projection on the top wall of the box 10, the second side edge trajectory line E is an arc; that is, during the opening of the door 30, the second side edge N moves in an arc. In this embodiment, the center of the circle containing the second side edge trajectory line E is denoted as the second side edge center O4. In the projection on the top wall of the box 10, the second side edge center O4 is located on the side of the guide center O2 that is close to the first reference plane M1 and far away from the second reference plane M2.

[0185] During the opening of door 30, as the opening angle of door 30 increases, the second side edge N first moves in an arc away from the first reference plane M1 and closer to the second reference plane M2, and then moves in an arc away from both the first and second reference planes M1 and M2. As a configurable method, when door 30 is opened to G3, the distance between the second side edge N and the second reference plane M2 is minimized. That is, N3 is the point where the distance between the trajectory line E of the second side edge and the plane containing the pick-up / place-out opening is minimized.

[0186] In this embodiment, in the projection on the top wall of the housing 10, the opening angle of the door 30 is 0°, G1, G2, G3, G4, G... max When the second lateral edge N is located, the positions are recorded as N0, N1, N2, N3, N4, and N5 respectively; among them, N0, N1, N2, N3, N4, and N5 are all on circle O4.

[0187] The line containing N3 and the center of the second side edge O4 is denoted as the third line O4N3; the third line O4N3 is parallel to the side wall of the first body; that is, the second line O4N3 is perpendicular to the pick-up and put-out opening.

[0188] The radius of the circle containing the trajectory line E of the second side edge is denoted as r4, where r3 > r4; the movement trajectory of the second side edge N is smooth, effectively avoiding the initial compression of the door seal 2 during the opening of the door 30.

[0189] During the opening of the door 30, the side sealing edge F moves along with the opening of the door 30, and its trajectory is denoted as the side sealing edge trajectory line J. In this embodiment, the side sealing edge trajectory line J is an arc in the projection on the top wall of the box 10; that is, the side sealing edge trajectory line J moves in an arc during the opening of the door 30. In this embodiment, the center of the circle containing the side sealing edge trajectory line J is denoted as the side sealing edge center O5; wherein, in the projection on the top wall of the box 10, the side sealing edge center O5 coincides with the guide circle center O2. It should be noted that "coincidence" includes two points being completely equal in the standard mathematical definition, and also includes the relationship between two points with a distance of less than 0.2mm. That is, in this embodiment, circles O5 and O2 are concentric circles. That is, in this embodiment, the circle containing the guide trajectory line K and the circle containing the side sealing edge trajectory line J are concentric circles. The radius of the circle containing the side sealing edge trajectory line J is denoted as r5, where r5 > r2.

[0190] During the opening of the door 30, as the opening angle of the door 30 increases, the side sealing edge F first moves in an arc away from the first reference plane M1 and closer to the second reference plane M2, and then moves in an arc away from both the first and second reference planes M1 and M2. As a possible configuration, the distance between the side sealing edge F and the second reference plane M2 is minimized when the door 30 is opened to G``. Here, G``∈(G1, G2), to avoid compressing the door seal 2.

[0191] In this embodiment, in the projection on the top wall of the housing 10, the opening angle of the door 30 is 0°, G1, G2, G3, G4, G... max At that time, the positions of the first side edge W are recorded as F0, F1, F2, F3, F4, and F5 respectively; among them, F0, F1, F2, F3, F4, and F5 are all on circle O5.

[0192] Combination Figures 19-23 As shown, assuming the door 30 rotates around the rotation center I of the previous state to the adjacent subsequent state; then, under this motion trend, when the door 30 opens, the first side edge W is successively located at W' relative to the hinge; the second side edge N is successively located at N' relative to the hinge; and the side sealing edge F is successively located at F' relative to the hinge. For example: Figure 19 In the diagram, the position of the door 30 indicated by the dashed line is the position reached when the door 30 rotates around I0 to G1; the position of the door 30 indicated by the solid line is the position reached when it is rotated open to G1 according to the configuration of this application. Figure 20 In the diagram, the dashed line indicates the position of door 30 after it has been opened to G1 using the rotational method described in this application, and then rotated to G2 with the central axis I1 (the rotation center I of the previous state) as the center; the solid line indicates the position of door 30 after it has been opened to G2 using the rotational method described in this application; similarly, according to reason 21- Figure 23Compare them.

[0193] By comparing the configuration of this application with the way the door 30 rotates around its previous rotation center I, it can be seen that:

[0194] During the process of opening the door 30 from the closed state to G3, in this application, the positions W of the first side edges are all located on the side away from the first body sidewall and close to the retrieval opening; the positions N of the second side edges are all located on the side away from the first body sidewall and close to the retrieval opening; and the positions F of the side sealing edges are all located on the side away from the first body sidewall and close to the retrieval opening. That is, during the process of opening the door 30 from the closed state to G3, the door 30 has a tendency to move inward and backward.

[0195] Door 30 is opened from G3 to G max During the process, in this application, the position W of the first side edge is always located on the side away from the first body sidewall and the retrieval port of W'; the position N of the second side edge is always located on the side away from the first body sidewall and the retrieval port of N'; and the position F of the side sealing edge is always located on the side away from the first body sidewall and the retrieval port of F'. That is, the door 30 is opened from G3 to G max During the process, the door 30 has a tendency to move inward and forward.

[0196] Example 2

[0197] This embodiment is similar in principle to Embodiment 1, with the main difference being the specific positions of the guide portion 50 and the guide portion 60. Specifically, as shown... Figure 24 As shown, in this embodiment, G3 = 45°, G4 = 90°, P0, P4, and Q0 are on the same straight line, and the straight line P0P4 is parallel to the side wall of the first body. In addition, P4 and Q4 are on the same straight line, and the straight line P4Q4 is parallel to the plane where the first pick-up and put-out port is located. The above settings make the stroke distribution of the first door hinge 40 relative to the guide part 50 more uniform, so that the door 30 has stability, uniformity and smoothness throughout the opening process.

[0198] In some embodiments of this application, the maximum opening angle G of the door 30 in Embodiment 2 is taken as an example. max Let's take G4 = 90° as an example to illustrate, such as... Figure 25 As shown, the first door hinge 41 and the second door hinge 42 are disposed on the door body 30, and the guide groove and the guide groove are disposed on the hinge; the door body 30 rotates around a dynamic point. During the opening process of the door body 30, the position of this point relative to the door body is fixed, which is the center point (center point I of the axis) of the line connecting the first door hinge 41 and the second door hinge 42.

[0199] When the door 30 is closed, the door side wall 32 is flush with the first body side wall of the box. At this time, the guide center axis P is a distance from the first body side wall of the box. In this embodiment, to ensure that the front wall 31 of the door is flush with the first body side wall of the box when rotated 90°, the guide center axis P is also a distance from the front wall 31 of the door. That is, when the door 30 is closed, the coordinates of the guide center axis P in the XOY coordinate system are (a, a).

[0200] The maximum distance between the line connecting the two ends of the guide groove (PP`) and a point on the guide trajectory line S is b. The minimum distance between the guide trajectory line S and the side wall of the first body is F (F is the point with the maximum distance from the guide trajectory line S, which is b). During the rotation and opening of the door 30, when the guide center axis P just moves to point F and the rotation angle is 45°, the distance between the first side edge W of the door 30 and the side wall of the first body of the box 10 reaches its maximum, and the distance is b.

[0201] If the guide center axis P moves to point F when the rotation angle of the door 30 is less than 45° or exceeds 45°, then the distance from the first side edge W of the door 30 to the first side wall of the box 10 is less than...

[0202] In summary, if it is necessary to limit the maximum distance between the first side edge and the box body during the opening of the door 30, this can be achieved by controlling the sizes of a and b, or by controlling the opening angle of the door 30 when the guiding central axis P moves to point F. It should be noted that the methods described above for setting and controlling the distance the door 30 extends beyond the side wall of the first body when opening are not limited to the opening angle setting in this embodiment.

[0203] Example 3

[0204] This embodiment is similar in principle to Embodiment 1, with the main difference being the specific positions of the guide portion 50 and the guide portion 60. Specifically, as shown... Figure 26 As shown, in this embodiment, P0, P5, and Q0 are on the same straight line, and the straight line P0P5 is parallel to the side wall of the first body. That is, the line connecting the two endpoints of the guide trajectory line S is parallel to the side wall of the first body. In this embodiment, the maximum opening angle G of the door 30 is... max =122°. The above settings effectively increase the maximum opening angle of the door 30, making it convenient for users to pick up and put down items; on the other hand, P0, P5, and Q0 are on the same straight line, which facilitates the effective detection of processing accuracy after product processing, ensuring the high precision of the structure set in this application, thereby achieving precise control of the door 30.

[0205] Example 4

[0206] This embodiment is similar in principle to Embodiment 1, with the main difference being the specific positions of the guide portion 50 and the guide portion 60. Specifically, as shown... Figure 27 As shown, in this embodiment, the guide trajectory line S is located on the side of the guide trajectory line K near the front wall of the door, and the starting guide point Q0 is located on the side of the starting guide point P0 near the side wall of the first body and the retrieval opening. This arrangement makes fuller use of the hinge's lateral dimension (the guide trajectory line S partially overlaps with the guide trajectory line K in the X-axis direction), effectively increasing the maximum opening angle of the door 30 and facilitating the user's retrieval of items.

[0207] Example 5

[0208] This embodiment is similar in principle to Embodiment 1, with the main difference being the specific positions of the guide portion 50 and the guide portion 60. Specifically, as shown... Figure 28 As shown, in this embodiment, the guide trajectory line S is located on the side of the guide trajectory line K closer to the side wall of the first body, and the starting guide point Q0 is located on the side of the starting guide point P0 away from the side wall of the first body and close to the retrieval and placement opening. The above settings make fuller use of the longitudinal dimension of the hinge (the guide trajectory line S and the guide trajectory line K partially coincide in the Y-axis direction), effectively increasing the maximum opening angle of the door 30, making it more convenient for users to retrieve and place items.

[0209] During the opening of the door 30, the guide center axis P moves along the guide trajectory line K first away from the side wall of the first body, and then moves towards the side wall of the first body. Specifically, during the opening of the door 30, the guide center axis P moves along the guide trajectory line K first away from the side wall of the first body and towards the retrieval opening, then moves away from the side wall of the first body and away from the retrieval opening, and then moves towards the side wall of the first body and away from the retrieval opening.

[0210] The movement trend of the door 30 during the opening process is the same as in Embodiment 1, first moving towards the side wall of the first body and the pick-up / placement opening, and then moving away from the side wall of the first body and towards the pick-up / placement opening.

[0211] The analysis process of the positions to which the first door hinge 41 and the second door hinge 42 move at a specific angle will not be repeated here.

[0212] Example 6

[0213] This embodiment is similar in principle to Embodiment 1, with the main difference being the specific positions of the guide portion 50 and the guide portion 60. Specifically, as shown... Figure 29As shown, in this embodiment, the guide trajectory line S is located on the side of the guide trajectory line K closer to the retrieval opening, and the starting guide point Q0 is located on the side of the starting guide point P0 away from the side wall of the first body and the retrieval opening; the guide center O1 is located on the side of the guide trajectory line S away from the retrieval opening, and the guide center O2 is located on the side of the guide trajectory line K closer to the retrieval opening. This configuration makes fuller use of the hinge's lateral dimension (the guide trajectory line S and the guide trajectory line K overlap significantly in the X-axis direction), effectively increasing the maximum opening angle of the door 30 and facilitating the user's retrieval of items.

[0214] In addition, in this embodiment, during the opening of the door 30, the movement trend of the central point I is I0→I1→I2→I3→I4→I5, that is, the central point I moves inward and forward throughout the entire process. On the one hand, this avoids interference between the door 30 and the cabinet when the door is opened, and on the other hand, it reduces the limitation of the cabinet 100 on the maximum opening angle of the door 30, effectively increasing the maximum opening angle of the door 30 and making it convenient for users to take and put in items.

[0215] In this embodiment, during the process of the door 30 opening from closed to its maximum angle, the first side edge W, the second side edge N, and the side sealing edge F all move in an arc.

[0216] Example 7

[0217] In embodiments one through six of this application, both the guide portion 50 and the guide portion 60 are provided with regular arc grooves. See also Figures 3-29 Specifically, in this embodiment, the guide trajectory line S is an arc, and the guide trajectory line K is also an arc. Correspondingly, the curved groove walls of the guide part 50 and the guide part 60 are also arc-shaped.

[0218] The above configuration ensures smooth and fluid movement of the first door hinge 41 relative to the guide portion 50 and the second door hinge 42 relative to the guide portion 60, thereby ensuring smoother opening of the door 30. This embodiment features highly fluid movement of the door hinges relative to the arc-shaped guide portion or guide portion, effectively increasing the smoothness of door 30 opening and extending the service life of the hinge shaft. Furthermore, in some embodiments of this application, the second door hinge 42 moves continuously and uninterruptedly relative to the guide portion 60 throughout the entire opening process of the door 30.

[0219] In this embodiment, the movements of the first pivot 41 relative to the guide portion 50 and the second pivot 42 relative to the guide portion 60 are actually the movements of the rollers relative to the cam. For cam mechanisms with roller followers, the size of the roller radius often affects the shape of the actual profile curve of the cam, so the roller radius must be selected appropriately.

[0220] Where ρ: theoretical profile radius; ρ′: actual profile radius; ρ min The minimum radius of curvature of the convex portion of the theoretical profile curve (i.e., the radius of curvature of the sharpest part); rT : Roller radius; η: Theoretical profile, η′ actual profile.

[0221] like Figure 30 As shown in a), when the theoretical profile curve of the cam is a concave curve, ρ′=ρ+r T Therefore, r T The size of is not limited by ρ, and at this time, regardless of the size of the roller radius, the working profile of the cam is always a smooth curve.

[0222] When the theoretical profile curve of the cam is a convex curve, then ρ=ρ′-r T :

[0223] (1) As Figure 30 As shown in b), when ρ min >r T When ρ′>0, the actual contour curve is a smooth curve.

[0224] (2) Figure 30 As shown in c), when ρ min =r T When ρ′=0, a sharp point is generated on the actual profile curve of the cam. This sharp point is very easy to wear and can easily change the motion law of the cam, so it cannot be used.

[0225] (3) Figure 30 As shown in d), when ρ min <r T When ρ′<0, the actual contour curves will intersect, and the portion of the actual contour curve above the intersection point will be cut off during processing, thus preventing the realization of this part of the motion law.

[0226] Therefore, in order to ensure that the cam profile neither becomes sharp nor intersects at any position, the roller radius r T It must be smaller than the minimum radius of curvature ρ of the convex portion of the theoretical profile curve. min Generally, r is selected. T ≤0.8ρ min If this requirement cannot be met, increase the cam base circle radius and redesign the cam profile curve.

[0227] Accordingly, in this embodiment, the guide trajectory line S corresponds to the theoretical cam profile curve of the guide part 50, and the guide trajectory line K corresponds to the theoretical cam profile curve of the guide part 60; in this embodiment, the theoretical cam profile curve is a convex curve (convex arc, the guide part protrudes towards the side wall of the first body, and the guide part protrudes towards the pick-and-place port); the arc groove wall of the guide part 50 away from the side wall of the first body is its actual profile curve, and the arc groove wall of the guide part 60 away from the pick-and-place port is its actual profile curve; the radii of the first door hinge 41 and the second door hinge 42 also satisfy r T The size satisfies the setting (1) (ρ)min >r T That is, the radius of the door hinge is smaller than the minimum radius of curvature (arc radius) of the corresponding trajectory line, to ensure that the arc sidewall of the guide part 50 away from the sidewall of the first body is a smooth arc, and the groove wall of the guide part 60 away from the pick-up and put-out port is a smooth arc. On the one hand, this makes the movement of the first door hinge 41 and the second door hinge 42 smoother, and on the other hand, it reduces the wear of the guide part 50 and the guide part 60. That is, the guide part 50 and the guide part 60 are essentially set as cams, effectively avoiding the defects of easy wear caused by concave structures. In summary, in this embodiment, both the guide trajectory line S and the guide trajectory line K are set as convex cam curves (convex arcs).

[0228] Example 8

[0229] like Figures 31-32 As shown, in this embodiment, a receiving portion 81 recessed in the direction away from the hinge is formed at the end of the door body 30 near the hinge. The door body 30 includes a front panel 34 with a front wall 31; wherein, the receiving portion 81 is located on the side of the front panel 34 near the rear wall. A first door hinge 41 and a second door hinge 42 are located on the bottom wall of the receiving portion 81.

[0230] As an alternative configuration, in the projection of the top wall of the housing 10 onto the plane, the bottom wall of the receiving part 81 is in the shape of a right trapezoid; the upper base of the right trapezoid is parallel to the front wall 31 of the door, and the lower base is flush with the rear wall of the door; the upper base is located on the side of the lower base that is close to the front wall 31 of the door, the right-angled waist of the right trapezoid is flush with the side wall 32 of the door, and the upper base is smaller than the lower base.

[0231] The extension 402 of the hinge plate 40 includes a first side, a second side, a first transition side, a third side, a second transition side, and a fourth side connected in sequence; wherein the first side and the fourth side are parallel, and the fourth side is located on the side of the first side closer to the side wall of the first body; the third side is parallel to the plane where the access port is located, that is, the third side is parallel to the front wall 31 of the door when the door body 30 is closed; the second side is consistent with the inclined edge of the bottom of the receiving part 81; the first transition side smoothly connects the second side and the third side; the second transition side smoothly connects the third side and the fourth side.

[0232] As an optional configuration, when the door is closed, the distance between the third side of the extension 402 and the upper bottom of the bottom wall of the receiving part 81 is any value between 2mm and 5mm.

[0233] The above configuration ensures that the extension 402 of the hinge plate 40 does not interfere with the receiving part 81 during the rotation and opening of the door 30, thus ensuring that the door 30 opens smoothly without interfering with the wall of the receiving part 81. Furthermore, the receiving part 81 is located on the side of the front panel 34 near the rear wall 33 of the door, effectively ensuring the regularity, integrity, and aesthetics of the front wall 31 of the door.

[0234] This embodiment nine is applicable to any of the embodiments in embodiments one through seven.

[0235] Example 9

[0236] like Figures 33-35 As shown, in some embodiments of this application, the extension 402 of the hinge plate 40 is fixed with a track block, and a guide portion 50 and a guide portion 60 are formed on the track block.

[0237] Specific reference Figures 33-35 In this embodiment, a track block disposed on a hinge plate 40 corresponding to the lower end of the door body 30 is used as an example for explanation. Specifically, the track block includes a plate body, on which an arc-shaped guide groove and a guide portion are recessed to the same side.

[0238] An installation hole 405 is formed on the extension 402; a guide groove and a guide portion are installed in the installation hole 405, and the groove walls of the guide groove and the guide portion are mated with the hole wall of the installation hole 405; the plate body of the track block is mated with the extension 402. The track block and the installation hole 405 are interference-fitted.

[0239] As one feasible approach, the circumferential wall of the guide groove and the circumferential wall of the guide portion are connected as a single unit via the transition portion 20; the mounting hole 405 is a continuous through hole that mates with the outer peripheral wall of the track block formed by the connection of the circumferential wall of the guide groove, the outer wall of the transition portion 20, and the circumferential wall of the guide portion. The mounting hole 405 is a through hole, and the transition connection facilitates machining.

[0240] The track blocks are made of plastic, which is self-lubricating and wear-resistant; ensuring smooth movement of the first door hinge 41 relative to the guide groove and the second door hinge 42 relative to the guide section when the door 30 is opened. Alternatively, the track blocks can be made of POM material, which has strong abrasion resistance and can improve service life.

[0241] like Figures 36-41 As shown, the configuration of the first and second mating parts is described in this embodiment; as one possible configuration, the second mating part is disposed on the locking block 6 located at the lower end of the door body 30. Figures 36-41 As shown, the locking block 6 located at the lower end of the door body 30 is used as an example for explanation; specifically, the second mating part on the locking block 6 is configured as a locking structure, and specifically, the second mating part includes a locking hook. The locking hook extends away from the side wall 32 and bends towards the side close to the rear wall 33 and the side wall 32, with the opening of the locking hook facing the side wall 32, and the free end of the locking hook located on the side close to the rear wall 33.

[0242] Specifically, the door end cover 8 located at the lower end of the door body 30 is provided with a receiving groove 80 on the side of the first door hinge 41 and the second door hinge 42 away from the door side wall 32. The locking block 6 is inserted into the receiving groove 80 and then fastened to the door body 30 by screws or the like.

[0243] Specifically, the lock hook includes a root joint 62 and a hook portion 61. The root joint 62 is connected to a receiving groove 80 formed on the side of the door end cover 8 near the hinge and located on the side of the first door hinge 41 and the second door hinge 42 away from the door side wall 32. The hook portion 61 is connected to the root joint 62 and bends towards the side near the rear door wall 33 and the door side wall 32. A screw passes through the root joint 62 and connects to the door body 30 to strengthen the connection strength between the root joint 62 and the door body 30, so that only the hook portion 61 deforms when the lock hook disengages from the stop portion 403. It should be noted that in this embodiment, the locking block 6 is installed on the side of the door end cover 8 near the hinge, that is, the locking block 6 is fixedly installed on the outside of the door body 30.

[0244] A first mating part located on the side of the hinge plate 40 away from the first body sidewall is provided as a stop part 403. The stop part 403 and the connecting part 401 of the hinge together define a hook gap 404; that is, the hook gap 404 is located on the side of the stop part 403 closer to the cabinet body. When the door 30 is in the closed state, the free end of the lock hook is received in the hook gap 404, the stop part 403 is located in the lock hook, and the lock hook on the door 30 hooks the stop part 403 on the hinge plate 40, thereby locking the door 30 and preventing the door 30 from not closing tightly and affecting the refrigeration and freezing effect of the refrigerator; when the door 30 is opened, the lock hook is deformed by force and overcomes the obstruction of the stop part 403, thereby disengaging from the stop part 403.

[0245] As an optional feature, the free ends of both the hook portion 61 and the stop portion 403 are arc-shaped, which makes it easier for the hook portion 61 to hook onto or disengage from the stop portion 403 more smoothly along the arc.

[0246] like Figures 40-42 When the door 30 is closed from the open state, as the door 30 rotates to close, the free end of the hook part 61 gradually approaches the stop part 403. When the hook part 61 and the stop part 403 come into contact, the door 10 continues to close. Under the action of the stop part 403, the hook part 61 deforms, the stop part 403 enters the hook part 61, and the free end of the hook part 61 enters the hook gap 404; the lock hook locks with the hinge plate 40, realizing the locking of the door 30 and the box 10.

[0247] like Figures 40-42When the door 30 opens from the closed state, the process is the reverse of the closing process, and will not be described again here. When the door 30 closes from the open state to a set angle (7° in this embodiment), the hook 61 releases its elastic energy, and the door 30 automatically closes under the action of the hook 61 and the stop 403. As an implementable method, when the door 30 opens from the closed state to a set unlocking angle (5° to 8° in this embodiment), the hook 61 and the stop 403 separate. With the setting having the trajectory characteristics of Embodiment 1, the initial opening of the door 30 is dominated by rotational motion, which facilitates the rapid separation of the lock hook and the stop 403, making it convenient for the door 30 to open quickly.

[0248] In some embodiments, the door body 30 may be provided with a first protrusion 82 and a second protrusion 83, which together define a gap groove 84; the first protrusion 82 is generally located on the side of the second protrusion 83 near the front wall 31 and the side wall 32 of the door. A plug plate 63 is formed at the root joint 62, which is inserted into the gap groove 84. In this way, the limiting of the first protrusion 82 and the second protrusion 83 can prevent the root joint 62 from deforming in the direction from the front wall 31 to the rear wall 33 of the door.

[0249] Specifically, the plug-in plate 63 is configured as an arc-shaped plate; the second protrusion 83 is an arc-shaped plate, and the edge of the first protrusion 82 near the second protrusion 83 is consistent with the shape of the second protrusion 83. The first protrusion 82 and the second protrusion 83 together define an arc-shaped gap groove 84; the arc-shaped plug-in plate 63 cooperates with the arc-shaped gap groove 84. The above arc-shaped configuration increases the limiting area of ​​the gap groove 84 on the root connection part 62, increases the connection strength between the locking block 6 and the door body 30, and effectively limits the deformation of the root connection part 62.

[0250] In addition, locking block 6 can be made of POM material, which has strong abrasion resistance and can improve service life.

[0251] It should be noted that this embodiment nine is applicable to any of the embodiments in embodiments one through eight.

[0252] Example 10

[0253] like Figures 41-48 In this embodiment, as Figure 43As shown, the refrigerator includes two doors 30 arranged opposite each other, which work together to open or close the access panel. When both doors 30 are closed, a flip beam 9 is provided on the inner lining surface of one door 30 closest to the other. A track groove 14 is provided on the top wall of the refrigerator compartment, and the flip beam 9 can slide with the track groove 14 to switch the angle of the flip beam 9 relative to the door 30. When both doors 30 are closed, the flip beam 9 seals the gap between the two doors 30 and the refrigerator body 10 to effectively prevent cold air from escaping.

[0254] Specifically, the flip beam 9 includes a door flip beam rear cover, which is connected to the door body 30 via a first door hinge and a second door hinge. The door flip beam rear cover is elastically connected to the two door hinges using torsion springs. The first door hinge is located above the second door hinge. A guide block 13 is fixedly provided on the top of the door flip beam rear cover. The guide block 13 acts as a rotating component of the flip beam 9 and cooperates with the track groove 14 to achieve the switching of different angles of the flip beam 9 relative to the door body 30.

[0255] Both the door hinges and the rear cover of the door rotating beam have through holes for the torsion spring lever arms, which connect the upper and lower door hinges to the rear cover of the door rotating beam using the torsion springs. Specifically, the first door hinge is connected to the rear cover of the door rotating beam via a first torsion spring, and the second door hinge is connected to the rear cover of the door rotating beam via a second torsion spring. When the flip beam 9 rotates around the door hinges, the first and second torsion springs store or release elastic energy to ensure that the rear cover of the door rotating beam rotates stably and returns to its original position in a timely manner.

[0256] With the door 30 open, the flip beam 9 is tightly attached to one side of the door hinge and fixed to the inner lining of the door 30 due to the torsion of the torsion springs (first torsion spring and second torsion spring).

[0257] In this invention, a first door hinge 41 and a second door hinge 42 are provided on the hinge. The end of the door body 30 is provided with a guide part 50 that cooperates with the first door hinge 41 and a guide part 60 that cooperates with the second door hinge. During the closing process of the door body 30, the two hinge axes move in the corresponding guide parts or guide parts, and the door body 30 moves outward a certain distance in the lateral direction relative to the hinge. This causes the force that causes the flip beam 9 on the door body 30 to flip to be partially offset as the door body 30 moves outward while closing. As a result, the guide block 13 at the top of the rotating beam cannot effectively complete the flipping after entering the track groove 14 on the cabinet and is stuck. This causes the door body 30 with the rotating beam to fail to close completely, resulting in the failure of the refrigerator's low-temperature storage.

[0258] like Figures 44-45 As shown, when the door 30 is closed from the open state, a closing force F is first applied to the door 30. W Under external force (closing force F) W Under the action of ), the door 30 gradually closes, and the door 30 closes to G.S At this time, the guide block 13 at the top of the flip beam 9 contacts the track groove 14; the door 30 closes to a certain angle G. S Afterwards, the guide block 13 at the very top of the tilting beam 9 enters the track groove 14. During the continued closing process, the guide block 13 begins to tilt due to the pressure from the groove wall of the track groove 14. The torsion spring is compressed radially. When the tilting beam 9 tilts past G' F The torsion spring reaches its critical value. Afterward, the torsion spring begins to extend, working in conjunction with the pressure of the groove wall of track groove 14 to quickly rotate the flip beam 9 into position until the door 30 closes. At this point, the torsion spring torque is released, and it returns to a relaxed state. After the door 30 closes, the flip beam 9 contacts the sealing strip on the door 30, effectively preventing cold air from escaping between the two hinged doors. The above corresponds to the flip beam 9 rotating to G' F The door closes at a 30° angle, reaching G. F Among them, G S >G F As a configurable method, G` F =45°, meaning that when the tilting beam 9 tilts over 45°, the torsion spring reaches its critical value. As an adjustable setting, G... S Set to any value between 6° and 12°, G F Set to any value between 3° and 5°; door 30 closes to achieve G. F Afterwards, the tilting beam 9 automatically tilts. The above occurs when the tilting beam 9 tilts to G' F In the later stage, the torsion spring extends and releases torque; the torque released by the torsion spring in this stage is denoted as the overturning force F. N The overturning beam 9 is subjected to the overturning force F N It flips into place under the action.

[0259] It should be noted that during the flipping process of the flipping beam 9, the closing force F W Continue until the door is closed to G. F Then, after the door body 30 has rotated and closed to the critical point of the torsion spring, the closing force F is removed. W The flip beam 9 can automatically complete the flipping process.

[0260] In summary, it can be concluded that in the gate body 30, G S Close to G F During the process, the torsion spring is compressed, and the closing force F W Under the combined action of the pressure from the groove wall of track groove 14, the hook part 61 undergoes elastic deformation; while the door body 30 is closed to G... F During the closing phase, the flipping beam 9 experiences a flipping force F generated by the torsion spring. N The rotation is completed under the combined action of the pressure from the wall of the trajectory groove 14.

[0261] Combining the setting of the locking block in Embodiment Nine, and combining Figures 41-42 As shown, when the door 30 is closed from the open state, a closing force F is first applied to the door 30. W In the closing force F W Under the action, the door 30 gradually closes; as the door 30 rotates to close, the free end of the hook 61 gradually approaches the stop 403; as Figure 41 When the door is closed to G B0 At that time, the hook part 61 abuts against the stop part 403; then, with the closing force F W Under the action, the door 10 continues to close, the stop part 403 interacts with the hook part 61, and the hook part 61 undergoes elastic deformation. Under the closing force F W Under the combined action of the stop part 403 and the stop part 403, the moving hook part 82 gradually enters the hook gap 404 (that is, the stop part 403 enters the hook part 61); as Figure 42 When the door is closed to G B1 At that time, the elastic deformation of the hook part 61 reaches the maximum deformation of the door 30 during the closing process. When the door 30 is closed, it reaches G. B1 Subsequently, the elastic energy stored in the hook part 82 during its initial deformation is released. Combined with the force of the stop part 403, the hook part 82 returns to its relaxed state and further enters the hook gap 404, causing the door 30 to quickly and automatically close into place. Until the door 30 is closed, the lock hook and hinge plate 40 are locked, achieving the locking of the door 30 and the housing 10. (G) B0 >G B1 As a configurable method, G B0 Set to any value between 15° and 20°, G B1 Set to any value between 3° and 8°; the door 30 closes to achieve G. B1 Afterwards, door 30 automatically closes. The above occurs when door 30 closes to achieve G. B1 In the later stage, the hook part 82 releases elastic energy, and the force released by the hook part 82 in this stage is denoted as the locking force F. S Locking force F S This causes the door to close completely at position 30.

[0262] It should be noted that during the closing process of the above door 30, the closing force F W Continue until the door is closed to G. B1 Then, after the door body 30 has rotated and closed to the maximum elastic deformation of the hook part 82, the closing force F is removed. W Then, door 30 can automatically complete the flipping. And when door 30 is closed to G... B1 Retract the closing force F W The door 30 has an inertial force FG, which keeps the door 30 in its original closing motion tendency.

[0263] In summary, door body 30 is composed of G B0 Close to G B1 During the closing force F W Under the combined action of the stop part 403 and the stop part 403, the hook part 61 undergoes elastic deformation; when the door body 30 is closed to G B1 At that time, the hook part 61 undergoes elastic deformation, reaching the maximum deformation of the door 30 during the closing process; when the door 30 is subjected to G B1 During the process of closing, the elastic force of the hook part 82 is released, and the locking force F S Under the combined action of the elastic force of the hook part 82, the force of the stop part 403, and the inertial force FG, the door 30 closes quickly.

[0264] The above describes the closing process when a rotating beam or a hook part 82 is set separately on the door body 30; the above describes the closing mechanism when both a rotating beam and a hook part 82 are set on the door body 30.

[0265] like Figure 46 As shown, G is a configurable method. B1 >G S That is, the door 30 is closed to G. B1 When the elastic deformation of the hook part 61 reaches its maximum value (when the elastic energy is at its maximum), the guide block 13 at the top of the flip beam 9 has not yet come into contact with the track groove 14.

[0266] In this embodiment, the closing force F W From the start of shutdown until G B1 That is, door 30 is closed to G. B1 Afterwards, remove the closing force F. W The user can automatically close the door to the correct position without applying any external force.

[0267] In the gate body 30, G B1 Continue to shut down to G S At that time, the guide block 13 at the top of the flip beam 9 contacts the track groove 14;

[0268] In the gate body 30, G S Continue to shut down to G F During the process, the door 30 is under the locking force F S The elastic force of the hook part 82 and the force of the stop part 403, and the inertial force F G The beam closes under the combined action of the two forces, and the overturning beam 9 is locked by the force F. S Inertial force F G Under the combined pressure of the groove wall of track groove 14, it begins to flip, and the torsion spring is compressed radially;

[0269] In the gate body 30, G F During the continued closing process, the door 30 is locked by force F.S The elastic force of the hook part 82 and the force of the stop part 403, and the inertial force F G Under the combined action of the two forces, the tilting beam 9 continues to close, and the locking force F S , overturning force F N Inertial force F G Under the combined action of the pressure from the groove wall of the trajectory groove 14, the flipping beam 9 quickly flips into place.

[0270] In the above embodiment, G is configured as follows: B1 >G S Door 30 closed to G B1 When the elastic deformation of the hook part 61 reaches its maximum value, the guide block 13 at the top of the flip beam 9 has not yet come into contact with the track groove 14, and the locking force F generated by the locking hook structure can be utilized. S And the inertial force F of door body 30 G This promotes the flipping of the flip beam 9 and reduces the occurrence of situations where the flip beam 9 cannot effectively flip into place due to the rotation and outward movement of the door 30 during the closing process, which counteracts the force that causes the flip beam 9 to flip.

[0271] In the above process, during the closing of the door 30, the stop and the locking hook structure reach G when the door 30 is closed. B1 Subsequently, as the closing angle of the door decreases by 30°, the locking force F... S It continues to decline.

[0272] As another configurable method, G B1 =G S Door 30 closed to G B1 (G S When the elastic deformation of the hook part 61 reaches its maximum value, the guide block 13 at the top of the flipping beam 9 begins to contact the track groove 14; it can also make full use of the locking force F generated by the locking hook structure. S And the inertial force F of door body 30 G This facilitates the rotation of the flip beam 9, reducing the likelihood that the flip beam 9 will fail to rotate effectively during the closing process of the door 30, as the rotation and outward movement of the door 30 may counteract the force that causes the flip beam 9 to rotate. At this time, the second contact guide point coincides with the first contact guide point.

[0273] As a configurable method, G B1 ∈[G S G S +3°], to avoid locking force F during setting. S Excessive attenuation caused the gate to close at 30°, reaching G. B1 The rear tilting beam 9 cannot be effectively tilted into place.

[0274] In this embodiment, under the trajectory settings of Embodiment 1; the door 30 is closed to G. B1 At this time, the first door hinge 41 is located at the first contact positioning point relative to the guide part 50, and the second door hinge 42 is located at the first contact guiding point relative to the guide part 60;

[0275] Door 30 closed to G S At that time, the first door hinge 41 is located at the second contact positioning point relative to the guide part 50, and the second door hinge 42 is located at the second contact guiding point relative to the guide part 60;

[0276] Door 30 closed to G F At that time, the first door hinge 41 is located at the third contact positioning point relative to the guide part 50, and the second door hinge 42 is located at the third contact guiding point relative to the guide part 60;

[0277] The first contact positioning point, the second contact positioning point, and the third contact positioning point are all located on the guide trajectory line S, and the first positioning point P1, the first contact positioning point, the second contact positioning point, and the third contact positioning point are sequentially closer to the front wall 31 and farther away from the side wall 32. The first contact guide point, the second contact guide point, and the third contact guide point are all located on the guide trajectory line K, and the first guide point Q1, the first contact guide point, the second contact guide point, and the third contact guide point are sequentially closer to the side wall 32 and the front wall 31.

[0278] like Figure 47 As shown, G is another feasible approach. F >G B1 That is, when the door 30 is closed to GF, when the flip beam 9 flips to the critical value of the torsion spring, the elastic deformation of the hook part 61 has not yet reached the maximum deformation.

[0279] In this embodiment, the closing force F W From the start of shutdown until G B1 That is, door 30 is closed to G. B1 Afterwards, remove the closing force F. W The user can automatically close the door to the correct position without applying any external force.

[0280] In the gate body 30, G F Continue to shut down to G B1 During the process, the door body 30 is subjected to closing force F W The hook part 82 continues to close under the combined action of its elastic force and the stop part 403, while the tilting beam 9 closes under the closing force F. W , overturning force F N The door flips under the combined pressure of the track groove 14 and the groove wall; the door 30 closes to G. B1 At that time, the elastic deformation of the hook part 61 reaches the maximum deformation.

[0281] In the gate body 30, GB1 During the continued closing process, the door 30 is locked by force F. S Under the combined action of the elastic force of the hook part 82 and the force of the stop part 403, the hook part 82 continues to close into place; the tilting beam 9 is locked by the locking force F. S , overturning force F N Under the combined action of pressure from the groove wall of the trajectory groove 14, it quickly flips into place.

[0282] In the above process, during the closing of the door 30, the stop and the locking hook structure reach G when the door 30 is closed. F Subsequently, due to the outward movement of the door 30 during the closing process, a flipping force F is generated. N It continues to decline.

[0283] During the closing process of door 30, the stop and the locking hook structure reach G when door 30 is closed. B1 Subsequently, as the closing angle of the door decreases by 30°, the locking force F... S It continues to decline.

[0284] As a configurable method, G B1 ∈(G F G F -1°], to avoid overturning force F during setup. N Locking force F S Excessive attenuation, thus effectively utilizing the overturning force F N Locking force F S The mutual promotion effect of the two allows the door 30 to close quickly and the flip beam 9 to flip quickly into place.

[0285] In this embodiment, the trajectory settings are the same as in Embodiment 1;

[0286] Door 30 closed to G B1 At this time, the first door hinge 41 is located at the first contact positioning point relative to the guide part 50, and the second door hinge 42 is located at the first contact guiding point relative to the guide part 60;

[0287] Door 30 closed to G F At that time, the first door hinge 41 is located at the third contact positioning point relative to the guide part 50, and the second door hinge 42 is located at the third contact guiding point relative to the guide part 60;

[0288] The first contact positioning point and the third contact positioning point are both located on the straight trajectory segment of the guide trajectory line S, and the first positioning point P1, the third contact positioning point, and the first contact positioning point are successively close to the front wall 31 and far away from the side wall 32. The first contact guide point and the third contact guide point are both located on the guide trajectory line K, and the first guide point Q1, the third contact guide point, and the first contact guide point are successively close to the side wall 32 and the front wall 31.

[0289] In this embodiment, G can be set. S =G B0 When the guide block 13 at the very top of the flip beam 9 contacts the track groove 14, the hook part 61 abuts against the stop part 403. This allows for the closing force F... W Under the action of [the mechanism], the torsion spring of the flip beam 9 and the hook part begin to deform synchronously to accumulate elastic energy, and then release the elastic energy successively; this effectively improves synchronous motion and reduces the closing force F applied by the user during the opening of the door 30. W The number of stages improves the user experience.

[0290] like Figure 48 As shown, G is another feasible approach. B1 =G F That is, the door 30 is closed to G. B1 When the elastic deformation of the hook part 61 reaches its maximum deformation, the flipping beam 9 flips to the critical value of the torsion spring.

[0291] In this embodiment, the closing force F W From the start of shutdown until G B1 (G F When; that is, when the door 30 is closed to G. B1 Afterwards, remove the closing force F. W The user can automatically close the door to the correct position without applying any external force.

[0292] In the gate body 30, G B0 Close to G B1 Door body 30 under closing force F W The hook part 82 continues to close under the combined action of its elastic force and the stop part 403, while the tilting beam 9 closes under the closing force F. W Under the combined pressure of the groove wall of track groove 14, the spring flips over, compressing and storing elastic potential energy; the door 30 closes to G. B1 (G F When the hook part 61 reaches its maximum elastic deformation, the flipping beam 9 flips to the critical value of the torsion spring.

[0293] Door body 30 is made of G B1 (G F During the continued closing process, the door 30 is under the locking force F S The hook part 82 continues to close into place under the action of elastic force and stop part 403; the tilting beam 9 is locked by locking force F. S , overturning force F N The combined effect of the pressure from the groove wall of the trajectory groove 14 and the groove quickly flips the object into place.

[0294] In the above embodiment, G is set B1 =G F That is, the door 30 is closed to G.B1 (G F When the elastic deformation of the hook part 61 reaches its maximum, the tilting beam 9 tilts to the critical value of the torsion spring, thus fully utilizing the tilting force F. N Locking force F S The mutual promotion effect of the door 30 and the flip beam 9 can be used to quickly close the door and flip the beam 9 into place. This reduces the occurrence of the flip beam 9 failing to flip effectively into place due to the rotation and outward movement of the door 30 during the closing process, which would offset the force that causes the flip beam 9 to flip.

[0295] In the above process, during the closing of the door 30, the stop and the locking hook structure reach G when the door 30 is closed. B1 (G F Afterwards, due to the outward movement of the door 30 during the closing process, a flipping force F is generated. N The locking force F decreases continuously; furthermore, as the closing angle of the door decreases by 30°, the locking force F... S It continues to decline.

[0296] In this embodiment, G B1 =G F Under the overturning force F N Locking force F S Both are synchronized and mutually reinforcing at their maximum, thus fully expanding the locking force F. S The range of angles that facilitate the flipping of the flipping beam 9.

[0297] In this embodiment, under the trajectory settings of Embodiment 1; the door 30 is closed to G. B1 (G F When the first door hinge 41 is located at the first contact positioning point relative to the guide part 50, the second door hinge 42 is located at the first contact guiding point relative to the guide part 60.

[0298] The first contact positioning point is located on the straight track segment of the guide trajectory line S, and the first positioning point P1 and the first contact positioning point are successively close to the front wall 31 and away from the side wall 32. The first contact guide point is located on the guide trajectory line K, and the first guide point Q1 and the first contact guide point are successively close to the side wall 32 and the front wall 31.

[0299] In this embodiment, G can be set. S =G B0 When the guide block 13 at the very top of the flip beam 9 contacts the track groove 14, the hook part 61 abuts against the stop part 403. This allows for the closing force F... W Under the action of [the mechanism], the torsion spring of the flip beam 9 and the hook part begin to deform synchronously to accumulate elastic energy, and then release the elastic energy successively; this effectively improves synchronous motion and reduces the closing force F applied by the user during the opening of the door 30. W The number of stages improves the user experience.

[0300] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0301] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, include: A housing that defines a storage compartment with an access opening; the housing includes a first body sidewall and a second body sidewall disposed opposite to each other; A hinge is provided on the housing and close to the side wall of the first body; the hinge is provided with a guide part and a guide part, and the guide part and the guide part both have an arc-shaped trajectory line; The door body has a front wall away from the housing when the door body is closed, and a side wall near the hinge and connected to the front wall; the end of the door body near the hinge is provided with a first door hinge that cooperates with the guide portion and a second door hinge that cooperates with the guide portion; During the opening process of the door from the closed state, the first door hinge moves in an arc relative to the guide part, and the second door hinge moves in an arc relative to the guide part, so that the door moves inward a certain distance; When the door is opened to 90°, the front wall of the door is parallel to the side wall of the first body, and the front wall of the door is located on the side of the first body side wall away from the side wall of the second body. The door has a rear wall opposite to the front wall; the arc-shaped trajectory line of the guide is denoted as the guide trajectory line; the guide trajectory line extends from the front wall to the rear wall when the door is closed, and the center of the guide trajectory line is located on the side away from the first body side wall; The arc-shaped trajectory line of the guide part is denoted as the guide trajectory line; the guide trajectory line extends along the arc from the side wall of the first body to the side wall of the second body, and the center of the guide trajectory line is located on the side away from the pick-up and put-out port; The guide trajectory line has a starting guide point P0 and a fourth guide point P4 located on the side of the starting guide point P0 near the pick-up and drop-off port. The central axis of the first door hinge is denoted as the guide central axis P; when the door is closed, the guide central axis P is located at the starting guide point P0; When the door is opened to 90°, the guide center axis P is located at the fourth guide point P4; wherein, the straight line P0P4 is parallel to the side wall of the first body.

2. The refrigerator according to claim 1, characterized in that, The door has a first side edge that is close to the hinge and away from the retrieval opening when the door is closed; When the central axis of the first door hinge moves to the starting guide point P0, the first side edge is located at W0; When the central axis of the first door hinge moves to the fourth guide point P4, the first side edge is located at W4; The line containing W0W4 is designated as the second line W0W4, which is parallel to the first line P0P4.

3. The refrigerator according to any one of claims 1-2, characterized in that, The door has a second side edge that is close to the hinge and close to the retrieval opening when the door is closed; The plane where the retrieval port is located is denoted as the second reference plane M2. The side of the first body wall away from the retrieval port is provided with a first reference plane M1 that is perpendicular to the second reference plane M2. The first reference plane M1 and the second reference plane M2 remain stationary relative to the box body during the opening process of the door body relative to the box body. During the process of the door opening to its maximum angle, the second side edge makes an arc motion, and the second side edge first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves away from the first reference plane M1 and away from the second reference plane M2.

4. The refrigerator according to claim 3, characterized in that, During the process of the door opening to its maximum angle, the movement trajectory of the second side edge is recorded as the second side edge trajectory line; The center of the circle containing the trajectory line of the second side edge is denoted as the center of the second side edge circle O4; the point on the trajectory line of the second side edge that is the closest to the pick-up and put-out port is denoted as N3; wherein, the straight line O4N3 is parallel to the side wall of the first body.

5. The refrigerator according to claim 4, characterized in that, The door body is provided with a door seal strip on the wall surface opposite to the front wall of the door, which cooperates with the front face of the box body when the door body is closed. The door seal strip has a side sealing edge that is close to the side wall of the door and away from the front wall of the door. During the process of the door opening to its maximum angle, the side sealing edge makes an arc motion, and the side sealing edge first moves away from the first reference plane M1 and closer to the second reference plane M2, and then moves away from the first reference plane M1 and away from the second reference plane M2.

6. The refrigerator according to claim 5, characterized in that, When the door is opened, the movement trajectory of the side sealing edge is recorded as the side sealing edge trajectory line; the circle containing the side sealing edge trajectory line and the circle containing the arc-shaped trajectory line of the guide part are concentric circles.

7. The refrigerator according to claim 3, characterized in that, The door has a first side edge near the hinge and away from the retrieval opening when the door is closed; when the door is closed, the first side edge is located on the side of the second side edge away from the box body; During the process of the door opening to its maximum angle, the first side edge makes an arc motion, and the first side edge first moves towards the first reference plane M1 and the second reference plane M2, and then moves away from the first reference plane M1 and towards the second reference plane M2.

8. The refrigerator according to claim 7, characterized in that, When the door is opened, the movement trajectory of the first side edge is recorded as the first side edge trajectory line; The center of the circle containing the trajectory line of the first side edge is denoted as the center of the first side edge circle O3; the center of the circle containing the arc-shaped trajectory line of the guide part is denoted as the center of the guide circle O1; wherein, the straight line O1O3 is perpendicular to the side wall of the first body.

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