Refrigerator

Abstract

The application provides a refrigerator, which comprises a box body defining a storage chamber with a taking and placing opening and having a first body side wall, a hinge close to the first body side wall, and a door body provided with a first door shaft and a second door shaft; the hinge is provided with a guide part having a guide track line, and the guide track line comprises a first track line, a second track line, a third track line and a fourth track line which are circular arc-shaped and connected in sequence; in the process that the door body is opened from G2 to G4, the guide part guides the first door shaft to make the center shaft thereof move in a circular arc along the first track line towards the first body side wall and the taking and placing opening; the guide part guides the second door shaft to make the center shaft thereof move in a circular arc along the fourth track line away from the first body side wall and the taking and placing opening; the door body is driven to rotate to open the refrigerator and move inward by a certain distance; the refrigerator accurately controls the rotation of the door body, so that the door body does not exceed or excessively exceed the side of the box body when being opened, and the movement of the door body is smooth and stable 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] Currently, refrigerators are mostly placed inside cabinets for built-in installation. However, due to space limitations within the cabinets, the corners of the door must not extend excessively beyond the cabinet's dimensions to ensure effective door opening. To meet this requirement, most refrigerators utilize a dual-axis design on either the door or the hinge, with a guide structure on the other axis to control the door's inward movement as it rotates open. However, this dual-axis design results in irregular guide paths for the two axes. During the entire opening process, while the two axes move along these paths, at least one axis exhibits irregular movement, leading to poor coordination, instability, and a generally unsmooth and unstable door opening. Summary of the Invention

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

[0004] Therefore, this application aims to provide a refrigerator whose hinge structure ensures that the door does not extend beyond or excessively extend beyond the side of the refrigerator body when opened.

[0005] The refrigerator according to this application includes:

[0006] 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;

[0007] A door is attached to the housing to open or close the loading / unloading port;

[0008] The first door hinge and the second door hinge are located at the end of the door body near the side wall of the first body, and connect the door body to the box body;

[0009] A hinge is provided on the housing and is located near the first door hinge and the second door hinge;

[0010] A guide portion is provided on the hinge; the first door hinge and the second door hinge cooperate with the guide portion to drive the door to open or close the loading and unloading port;

[0011] The guide portion has a guide trajectory line, which includes a first trajectory line, a second trajectory line, a third trajectory line, and a fourth trajectory line that are arc-shaped and connected tangentially in sequence.

[0012] During the process of the door opening from the second angle G2 to the fourth angle G4, the guide part guides the first door hinge to move, and causes the central axis of the first door hinge to move in an arc with a radius of r1 along the first trajectory line toward the side wall of the first body and the pick-up and put-out opening.

[0013] The guide portion guides the movement of the second door hinge, and causes the central axis of the second door hinge to move in an arc with a radius of r4 along the fourth trajectory line in a direction away from the side wall of the first body and the pick-up / placement opening; the first door hinge and the second door hinge drive the door body to rotate and open the pick-up / placement opening, and cause the door body to move a certain distance closer to the side wall of the second body.

[0014] In some embodiments of this application, during the process of the door opening from the closed state to the second angle G2, the guide portion guides the movement of the second door hinge, and causes the central axis of the second door hinge to move in an arc with a radius of r3 along the third trajectory line in a direction away from the side wall of the first body and close to the pick-up and put-out port, and then moves in an arc with a radius of r3 along the third trajectory line in a direction away from the side wall of the first body and the pick-up and put-out port.

[0015] In some embodiments of this application, during the process of the door opening from the closed state to the second angle G2, the guide portion guides the movement of the second door hinge, and causes the central axis of the second door hinge to first move along the second trajectory line in an arc with a radius of r2 in the direction away from the side wall of the first body and close to the pick-up and put-out opening, then move along the third trajectory line in an arc with a radius of r3 in the direction away from the side wall of the first body and close to the pick-up and put-out opening, and then move along the third trajectory line in an arc with a radius of r3 in the direction away from the side wall of the first body and the pick-up and put-out opening.

[0016] In some embodiments of this application, during the process of the door opening from the closed state to the second angle G2, the guide portion guides the movement of the second door hinge, and causes the central axis of the second door hinge to first move along the second trajectory line in an arc with a radius of r2 in the direction away from the side wall of the first body and close to the pick-up and put-out port, and then move along the third trajectory line in an arc with a radius of r3 in the direction away from the side wall of the first body and the pick-up and put-out port.

[0017] 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;

[0018] 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.

[0019] In the projection of the plane containing the top wall of the enclosure, the door is opened to its maximum angle G. max During the process, 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.

[0020] In some embodiments of this application, when the door is closed, the first side edge is located at W0 in the plane containing the top wall of the box; when the door is opened to 90°, the first side edge is located at W5.

[0021] The door is opened from the closed state to 90°, and the side edge trajectory line W0W5 formed by the first side edge is an arc, 0° < G2 < G4 < 90°.

[0022] In some embodiments of this application, the point at which the fourth trajectory line is at the greatest distance from the side wall of the first body is denoted as the fourth guide point Q4; when the door is opened to the fourth angle G4, the central axis of the second door hinge moves to the fourth guide point Q4 of the fourth trajectory line, and the first side edge is located at W4.

[0023] In the projection of the plane containing the top wall of the box, the straight line W0W4 containing W0 and W4 is perpendicular to the plane containing the loading and unloading port.

[0024] In some embodiments of this application, the central angle corresponding to the arc-shaped side edge trajectory line W0W5 formed by the door opening from the closed state to 90° is denoted as α. W When the first side edge is located between the first body sidewall and the first reference plane M1, and its distance from the first body sidewall is at its maximum, the door opening angle is G`; where α W =G`.

[0025] In some embodiments of this application, the center of the arc-shaped side edge trajectory line WOW5 formed by the door opening from the closed state to 90° is denoted as the first side edge center O`; wherein, the first side edge center O` is located on the side of the side edge trajectory line WOW5 near the second body sidewall.

[0026] The center of the arc-shaped third trajectory line is denoted as the third center O3, and the third center O3 is located on the side of the third trajectory line away from the pick-up and put-out port;

[0027] Wherein, the center O' of the first side edge, the center O3 of the third side edge, and the position W0 of the first side edge when the door is closed are on the same straight line.

[0028] In some embodiments of this application, the door is opened to its maximum angle G. max During the process, when the first side edge is located on the side of the first body sidewall close to the first reference plane M1, the maximum distance between the first side edge and the first body sidewall is any value less than 3mm.

[0029] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0030] This invention proposes a refrigerator comprising a cabinet body defining a storage compartment with a retrieval opening and having a first body sidewall, a hinge near the first body sidewall, and a door body having a first door hinge and a second door hinge; the hinge is provided with a guide portion having a guide trajectory line, the guide trajectory line including a first trajectory line, a second trajectory line, a third trajectory line, and a fourth trajectory line that are arc-shaped and sequentially tangentially connected; during the process of the door body opening from a second angle G2 to a fourth angle G4, the guide portion guides the movement of the first door hinge, and causes the central axis of the first door hinge to move in an arc with a radius of r1 along the first trajectory line towards the first body sidewall and the retrieval opening; the guide portion guides the movement of the second door hinge, and causes the central axis of the second door hinge to move in an arc with a radius of r4 along the fourth trajectory line away from the first body sidewall and the retrieval opening; thereby driving the door body to rotate and open the refrigerator, and causing the door body to move inward a certain distance; the refrigerator of this invention precisely controls the rotation of the door body, so that the door body does not extend beyond or excessively extend beyond the side of the cabinet body when opened, and the door body moves smoothly and stably when opened. Attached Figure Description

[0031] Figure 1 This is a perspective view of the refrigerator of the present invention;

[0032] Figure 2 This is a top view of the refrigerator of the present invention;

[0033] Figure 3 yes Figure 2 A partial structural diagram;

[0034] Figure 4 This is an exploded structural diagram of the top of the refrigerator and the hinge in Embodiment 1 of the present invention;

[0035] Figure 5 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0036] Figure 6 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0037] Figure 7 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0038] Figure 8 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0039] Figure 9 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0040] Figure 10 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0041] Figure 11 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0042] Figure 12 In the refrigerator embodiment of the present invention, the door is opened to... View at the hinge;

[0043] 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;

[0044] 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;

[0045] 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;

[0046] Figure 16 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 17 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 18 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 19 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 20 This is a schematic diagram showing the movement of the first door hinge relative to the guide portion and the second door hinge relative to the guide portion during the process of the door opening from G1 to G4 in Embodiment 1 of the refrigerator of the present invention;

[0051] Figure 21 In the refrigerator embodiment of the present invention, the door is opened from G4 to G... max A schematic diagram showing the movement of the first door hinge relative to the guide section and the second door hinge relative to the guide section during the process;

[0052] Figure 22 This is the maximum opening angle of the door in Embodiment 1 of the refrigerator of the present invention. The gate opens from G4 to G max A schematic diagram showing the movement of the first door hinge relative to the guide section and the second door hinge relative to the guide section during the process;

[0053] Figure 23 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, as well as 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.

[0054] Figure 24 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 25 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 26 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 27 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 28This is a comparison diagram of the position of the refrigerator door when it is opened to G5 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G4 with the center point I of the axis of rotation as the axis of rotation to G5.

[0059] Figure 29 This is a comparison diagram of the position of the refrigerator door when it is opened to G6 in Embodiment 1 of the present invention and the position of the door when it is rotated from the open state to G5 with the center point I of the axis of rotation as the axis of rotation to G6;

[0060] Figure 30 In the refrigerator embodiment of the present invention, the door is opened to G. max The position of the door when it is in the open state (G6) is relative to the center point I of the door when it is in the open state (G6). The door then rotates to the G6 position. max Position comparison chart at different times;

[0061] Figure 31 This is an exploded structural diagram of the lower end of the door and the locking block in Embodiment 1 of the refrigerator of the present invention;

[0062] Figure 32 This is a schematic diagram of the cooperation structure between the lower end of the door and the locking block in Embodiment 1 of the refrigerator of the present invention;

[0063] Figure 33 This is a schematic diagram showing the relative positions of the hinge and the locking block when the door is opened in Embodiment 1 of the refrigerator of the present invention;

[0064] Figure 34 This is a schematic diagram showing the relative positions of the hinge and the locking block when the door is closed in Embodiment 1 of the refrigerator of the present invention;

[0065] Figure 35 This is a schematic diagram of the engagement between the hinge and the locking block when the door is closed in Embodiment 1 of the refrigerator of the present invention;

[0066] Figure 36 This refers to the maximum opening angle of the refrigerator door in Embodiment 2 of the present invention. A schematic diagram showing the positions of the first door hinge relative to the guide part and the second door hinge relative to the guide part during the door opening process;

[0067] Figure 37 This refers to the maximum opening angle of the refrigerator door in Embodiment 2 of the present invention. A schematic diagram showing the positions of the first door hinge relative to the guide part and the second door hinge relative to the guide part during the door opening process;

[0068] Figure 38 This refers to the maximum opening angle of the refrigerator door in Embodiment 2 of the present invention. A schematic diagram showing the positions of the first door hinge relative to the guide part and the second door hinge relative to the guide part during the door opening process when the first door hinge moves to the starting guide point;

[0069] Figure 39 This is the maximum opening angle of the door in Embodiment 3 of the refrigerator of the present invention. A schematic diagram showing the positions of the first door hinge relative to the guide part and the second door hinge relative to the guide part during the door opening process;

[0070] Figure 40 This is the maximum opening angle of the door in Embodiment 3 of the refrigerator of the present invention. A schematic diagram showing the positions of the first door hinge relative to the guide part and the second door hinge relative to the guide part during the door opening process;

[0071] Figure 41 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 during the opening process of the refrigerator in Embodiment 4 of the present invention;

[0072] Figure 42 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 during the opening process of the refrigerator in Embodiment 5 of the present invention;

[0073] Figure 43 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 Embodiment 6 of the refrigerator of the present invention;

[0074] Figure 44 This is an exploded structural diagram of the hinge and track block that cooperate with the lower end of the door in Embodiment 6 of the refrigerator of the present invention;

[0075] Figure 45 This is an exploded structural diagram of the hinge and track block that cooperate with the lower end of the door in Embodiment 6 of the refrigerator of the present invention from another perspective.

[0076] 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; Hinge plate 40; Connecting part 41; Extension part 42; Mounting hole 43; Stop part 44; Hook gap 45; Door seal 20; Side sealing edge F; First door hinge 51; Second door hinge 52; Guide center axis P; Guide center axis Q; First center O1; Second center O2; Third center O3; Fourth center O4; Guide part 60; Guide trajectory line S; First guide line S1; Second guide line S2; Third guide line S3; Fourth guide line S4; Starting guide point P0; Starting guide point P0; First guide... Guide point P1; Second guide point P2; Third guide point P3; Fourth guide point P4; Fifth guide point P5; Sixth guide point P6; Seventh guide point P7; Eighth guide point P8; Ninth guide point P9; Starting guide point Q0; First guide point Q1; Second guide point Q2; Third guide point Q3; Fourth guide point Q4; Fifth guide point Q5; Sixth guide point Q6; Seventh guide point Q7; Eighth guide point Q8; Ninth guide point Q9; First tangent point Q`; Locking block 6; Hook part 61; Root connection part 62; Door end cover 8; Receiving groove 80; Track block 70; Ring plate 71; Circumferential groove wall 72; Groove opening 73; Groove bottom 74. Detailed Implementation

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] Example 1

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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 line of intersection of the two planes is the theoretical first side edge W (similarly, the theoretical second side edge N is the line of intersection 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; any straight line parallel to the theoretical side edge in the vertical direction on the curved surface can represent the movement of the corresponding side edge. Of course, as an alternative configuration, the theoretical side edge can be consistent with the actual side edge. In this application, for ease of description, the theoretical first side edge W and the theoretical second side edge N are used for description. Furthermore, 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 K; during the opening of the door 30, the center of mass plane K moves with the door 30. In this embodiment, the center of mass plane K, determined by the geometric center of the door 30 as the center of mass, is used for description.

[0088] A door seal 20 is provided on the rear wall 33 of the door. When the door 30 is closed, the door seal 20 fits against the front face of the enclosure 10 surrounding the access opening, effectively sealing the connection between the door 30 and the enclosure 10, thereby ensuring that the door 30 seals the access opening and preventing cold air from escaping. Optionally, the door seal 20 can be ring-shaped. The door seal 20 includes a side seal near the door side wall 32, and the edge of the door seal 20 (side seal) near the door side wall 32 and away from the front wall 31 is denoted as the side sealing edge F. During the opening of the door 30, the position of the side sealing edge F affects the degree to which the door 30 obstructs the access opening.

[0089] Reference Figures 2 to 4 The door body 30 is provided with a first door hinge 51 and a second door hinge 52 located on the side of the first door hinge 51 away from the front wall 31. The hinge has a guide part 60. The first door hinge 51 and the second door hinge 52 are both adapted to the guide part 60. During the process of the door body 30 rotating to open or close, the first door hinge 51 and the second door hinge 52 move relative to the guide part 60 at the same time and guide the door body 30 to move inward.

[0090] The hinge includes a hinge plate 40 fixedly connected to the housing 10. The hinge plate 40 includes a connecting portion 41 connected to the housing 10 and an extension portion 42 extending forward from the connecting portion 41 in a horizontal plate shape. The connecting portion 41 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 41 is connected to the top wall of the housing 10. For the hinge at the lower end of the door 30, the connecting portion 41 is connected to the front end face of the housing 10. In this invention, the guide portion 60 is located on the extension portion 42.

[0091] The first door hinge 51 and the second door hinge 52 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 51 and the second door hinge 52 provided at the end of the door body 30 extend vertically to fit the guide portion 60 provided on the hinge.

[0092] In this embodiment, the door body 30 is described using an example where guide portions 60 are provided on the hinge plates 40 at both the upper and lower ends of the door body 30, and a first door hinge 51 and a second door hinge 52 are provided at both the upper and lower ends of the door body 30. It should be noted that the arrangement in this embodiment is not limited to providing the same hinge structure at both the upper and lower ends of the door body 30. It can be arranged to connect the door body 30 and the housing 10 to form synchronous up and down movement as needed.

[0093] In this embodiment, we continue to refer to... Figures 2 to 3The plane containing the side of the cabinet 10 closest to the hinge plate 40 (the first body sidewall) is defined as the reference plane M0. The refrigerator is housed in the cabinet 100. The side of the reference plane M0 closest to the cabinet 100 is the outer side, and the opposite side closest to the storage compartment is the inner side. When the door 30 is closed, the front wall 31 of the door is flush with the front face of the cabinet 100 ("flush" includes any case where the distance between the two planes is less than 2mm). When the refrigerator is placed in the cabinet 100 for use, 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 (the first body sidewall, i.e., the reference plane M0) can be set, where α∈[3,5], unit: mm. Once the capacity of cabinet 100 is determined, the refrigerator is placed inside. It's crucial to ensure that the door 30 doesn't interfere with cabinet 100 when opened, allowing for effective access. To ensure the refrigerator door 30 opens normally, its first side edge W cannot extend too far beyond the side of cabinet 10 (reference plane M0) during rotation, preventing collisions that could prevent the door from opening properly. Furthermore, because the horizontal space of cabinet 100 is partially occupied by the refrigerator body and partially reserved for the door 30 to extend beyond the body when opened, the overall horizontal dimension of the refrigerator is affected by the distance the door 30 extends beyond the first side wall. A greater distance the door 30 extends beyond cabinet 10 results in a smaller horizontal dimension of cabinet 10; conversely, a smaller distance allows for a larger horizontal dimension.

[0094] To meet the above requirements, the door 30 needs to be able to move inward during rotation, so that the first side edge W extends as little as possible 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.

[0095] The dual-axis guide door 30 opening mechanism, in order to allow the door 30 to move inward during the opening process, involves an irregularly shaped guide track formed by the guide structure (guide groove) that guides the movement of each of the two axes. This design results in poor coordination and instability of the movement of the two axes, leading to a lack of smooth movement and poor stability during the entire opening process of the door. Furthermore, in a dual-axis structure, achieving inward movement of the door upon opening requires balancing the door's opening motion with the dual-axis structure. This necessitates high precision in the relative positions of the two axes and the coordination of the guiding structures with each axis. Machining accuracy has a decisive impact on controlling the final movement of the door. However, current dual-axis door 30 rotational inward movement designs suffer from several issues. First, the dual-axis and dual-guide-slot configuration, with two guide slots, demands high precision in their relative positions during machining, often resulting in low machining accuracy. Second, the irregular nature of a single guide slot also leads to low machining accuracy. Moreover, the current dual-axis door 30 rotational inward movement design, due to its irregular structure, makes it difficult to effectively detect the machining and coordination precision of the two axes and the guiding structures (guide slots). Manufacturing-induced precision reductions cannot be promptly detected and effectively adjusted, resulting in a product that cannot precisely control the door's complex rotational inward movement.

[0096] like Figure 3As shown in this embodiment, the central axis of the first door hinge 51 is denoted as the guide central axis P, and the central axis of the second door hinge 52 is denoted as the guide central axis Q; the guide part 60 is used to guide the trajectory line of the relative movement of the guide central axis P and the guide central axis Q, which is denoted as the guide trajectory line S; in this invention, the guide trajectory line S includes a first guide line S1, a second guide line S2, a third guide line S3, and a fourth guide line S4 connected in sequence; wherein, the first guide line S1, the second guide line S2, the third guide line S3, and the fourth guide line S4 are all arcs, and the second guide line S2 is tangent to both the first guide line S1 and the third guide line S3, and the third guide line S3 is tangent to both the second guide line S2 and the fourth guide line S4; wherein, the point of tangency between the first guide line S1 and the second guide line S2 is their connection point, the point of tangency between the second guide line S2 and the third guide line S3 is their connection point, and the point of tangency between the third guide line S3 and the fourth guide line S4 is their connection point. The first guide line S1, the second guide line S2, the third guide line S3, and the fourth guide line S4 are sequentially and tangentially connected to form the guide trajectory line S. It should be noted that in this invention, "tangential connection" refers to two circular arcs being tangent to each other, with the connection point of the two arcs being their point of tangency. Since the first guide line S1, the second guide line S2, the third guide line S3, and the fourth guide line S4 are all circular arcs and are tangentially connected, the guide trajectory line S is smooth and free of sharp points. This increases the smoothness of the movement of the guide part 60 in guiding the first door hinge 51 and the second door hinge 52, allowing the door 30 to open smoothly without jamming. Furthermore, during the processing of the guide part, its processing trajectory is also smooth and free of sharp points, ensuring the smoothness and effectiveness of the processing and improving processing accuracy. This ensures the finished product accuracy of the guide part 60, accurately guiding the first door hinge 51 and the second door hinge 52, thereby precisely controlling the opening of the door 30.

[0097] In this embodiment, the guide part 60 is configured as a guide groove; specifically, corresponding to the configuration of the guide trajectory line S of the guide part 60 being formed by multiple segments of circular arcs connected tangentially, the guide groove includes multiple segments of circular arc grooves connected in sequence, the groove walls of the multiple segments of circular arc grooves are tangential and connected in sequence at the tangent point; so that the first door hinge 51 or the second door hinge 52 adapted to the guide groove can make circular arc movements relative to different segments of the guide groove, effectively increasing the smoothness of the door 30 rotating and opening.

[0098] In some embodiments of this application, the openings of the guide grooves formed on the hinges at the top of the door body 30 all face downwards. The bottom of the guide grooves can effectively block dust, preventing dust from falling into the grooves and effectively ensuring the cleanliness of the guide grooves. This avoids the movement of the limiting shaft located in the grooves and cooperating with it being affected by dust accumulation, thereby effectively ensuring the long-term smoothness of the door body 30 opening. That is, in this embodiment, the guide portion 60 can block the door hinges to prevent dust accumulation from causing its relative movement with the corresponding door hinges to be unsmooth, which further ensures the smoothness of the door body 30 opening.

[0099] It should be noted that the arcs involved in this invention include standard arcs in the standard mathematical definition (the part between any two points on a circle), 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.

[0100] In this embodiment, as Figure 3 As shown, within the projection of the plane containing the top wall of the housing 10, the reference plane M0 is taken as the Y-axis, and the straight line located on the front side of the hinge plate 40 and perpendicular to the reference plane M0 is denoted as the X-axis (in this embodiment, the plane passing through the 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.

[0101] In the coordinate system XOY, the parametric equations of the circle containing the first trajectory line S1 are x = a1 + r1cosθ1, y = b1 + r1sinθ1; (a1, b1) are the coordinates of the center of the circle, denoted as the first center O1; r1 is the radius of the first circle, θ1 is the parameter, and (x, y) are the coordinates of the points it passes through.

[0102] The standard equation of the circle containing the second trajectory line S2 is: x = a² + r² cosθ², y = b² + r² sinθ²; (a², b²) are the coordinates of the center of the circle, denoted as the second center O²; r² is the radius of the second circle, θ² is the parameter, and (x, y) are the coordinates of the points it passes through.

[0103] The standard equation of the circle containing the third trajectory line S3 is: x = a3 + r3cosθ3, y = b3 + r3sinθ3; (a3, b3) are the coordinates of the center of the circle, denoted as the third center O3; r3 is the radius of the third circle, θ3 is the parameter, and (x, y) are the coordinates of the points it passes through.

[0104] The standard equation of the circle containing the fourth trajectory line S4 is: x = a4 + r4cosθ4, y = b4 + r4sinθ4; (a4, b4) are the coordinates of the center of the circle, denoted as the fourth center O4; r4 is the radius of the fourth circle, θ4 is the parameter, and (x, y) are the coordinates of the points it passes through.

[0105] That is, the center of the circle containing the first guiding line S1 is denoted as the first center O1; the center of the circle containing the second guiding line S2 is denoted as the second center O2; the center of the circle containing the third guiding line S3 is denoted as the third center O3; and the center of the circle containing the fourth guiding line S4 is denoted as the fourth center O4.

[0106] In some embodiments of this application, r2 < r4 < r1 < r3, wherein the radius of the circle containing the third trajectory line S3 is the largest, and the radius of the circle containing the first trajectory line S1 is the second largest, so that while the first door hinge 51 moves relative to the guide part 60, the second door hinge 52 has a smooth and gentle movement trend relative to the guide part 60 (the curvature of the guide trajectory line S is small), so that the movement coordination between the first door hinge 51 and the second door hinge 52 relative to the guide part 60 is more balanced, thereby improving the smoothness and stability of the door 30 opening.

[0107] In some embodiments of this application, a1 < a2 < a3 < a4, b3 < b1 < b4 < b2; that is, the second center O2 is located on the side of the first center O1 away from the sidewall of the first body and close to the pick-and-place port; the third center O3 is located on the side of the second center O2 away from the sidewall of the first body and the pick-and-place port, and the third center O3 is located on the side of the first center O1 away from the pick-and-place port; the fourth center O4 is located on the side of the third center O3 away from the sidewall of the first body and close to the pick-and-place port, and the fourth center O4 is located on the side of the second center O2 away from the pick-and-place port and on the side of the first center O1 close to the pick-and-place port.

[0108] In some embodiments of this application, the central angle of circle O1 corresponding to the first trajectory line S1 is the first central angle α1; the central angle of circle O2 corresponding to the second trajectory line S2 is the first central angle α2; the central angle of circle O3 corresponding to the third trajectory line S3 is the first central angle α3; and the central angle of circle O4 corresponding to the fourth trajectory line S4 is the fourth central angle α4.

[0109] As a settable setting, α1 is an obtuse angle, α2 is an obtuse angle, α3 is an acute angle, and α4 is an obtuse angle; it is settable that α4 > α2 > α1 > α3; α1 is any value from 98° to 102°; α2 is any value from 128° to 132°; α3 is any value from 37° to 41°; α4 is any value from 142° to 146°; it is also settable that α1 = 100°, α2 = 130°, α3 = 39°, and α4 = 144°. The above settings effectively ensure that, in this embodiment, with the guide trajectory line S composed of multiple tangentially connected arcs, the maximum opening angle of the door 30 is not less than 90°, allowing the rear wall 33 of the door 30 to be displayed forward, facilitating the retrieval and placement of items.

[0110] In some embodiments of this application, the first trajectory line S1 extends from the front wall 31 of the door 30 to the rear wall 32 of the door when the door body 30 is closed, and the first center O1 is located on the side of the first guide line S1 close to the first body side wall.

[0111] The second trajectory line S2 extends from the front wall 31 of the door 30 when the door body 30 is closed to the rear wall 32 of the door, and the second center O2 is located on the side of the second guide line S2 away from the side wall of the first body.

[0112] The third trajectory line S3 extends from the side wall of the first body to the side wall of the second body, and the third center O3 is located on the side of the third guide line S3 away from the plane where the pick-up and drop-off port is located.

[0113] The fourth trajectory line S4 extends from the rear wall 32 of the door 30 to the front wall 31 when the door 30 is closed, and the fourth center O4 is located on the side of the fourth guide line S4 close to the side wall of the first body.

[0114] In this embodiment, the first trajectory line S1 is externally tangent to the second trajectory line S2; the second trajectory line S2 is internally tangent to the third trajectory line S3; and the third trajectory line S3 is internally tangent to the fourth trajectory line S4.

[0115] As a configurable method, the first trajectory line S1 of the arc shape corresponds to the arc segment of circle O1 with θ1∈[121°, 221°];

[0116] The second trajectory line S2, which is an arc shape, corresponds to the arc segment of circle O2 with θ2∈[-59°, 71°];

[0117] The third trajectory line S3, which is an arc shape, corresponds to the arc segment of circle O3, where θ3∈[71°, 110°];

[0118] The fourth trajectory line S4 is an arc shape, and the arc segment corresponding to circle O4 is θ4∈[110°, 254°].

[0119] In some embodiments of this application, the first guide line S1, the second guide line S2, the third guide line S3 and the fourth guide line S4 are connected tangentially in sequence to form a guide trajectory line S. The sum of the central angles corresponding to the arcs of different radii drawn from one end to the other on the guide trajectory line S is 400° to 460°.

[0120] Among them, the first door hinge 51 moves from the closed state to the open state to the maximum angle G relative to the guide trajectory line S. max During the process, the sum of the central angles corresponding to the different circular arc trajectories made by the first door hinge 51 is γ1, where γ1 is any value between 75° and 235°. For example, when the door 30 is opened from the closed state to the maximum angle G... max During the process, the first door hinge 51 moves along the first trajectory line S1 first, and then moves along the second trajectory line S2. The sum of the central angle corresponding to the first trajectory line S1 and the central angle of the second trajectory line S2 through which the first door hinge 51 moves is γ1.

[0121] The second hinge 52 moves from the closed state to the maximum angle G relative to the guide trajectory line S as it opens from the closed state. maxDuring the process, the sum of the central angles corresponding to the different circular arc trajectories made by the second door hinge 52 is γ2, where γ2 is any value between 130° and 210°. For example, when the door 30 is opened from the closed state to the maximum angle G... max During the process, the second gate shaft 52 first moves along the third trajectory line S3, and then moves along the fourth trajectory line S4. The sum of the central angle corresponding to the third trajectory line S3 and the central angle of the fourth trajectory line S4 through which the first gate shaft 51 moves is γ2.

[0122] In some embodiments of this application, γ1 and γ2 are any values ​​from 0.8 to 1.3. The above limitation makes the coordination between the movement of the first door hinge 51 relative to the guide portion 60 and the movement of the second door hinge 52 relative to the guide portion 60 more balanced and stable throughout the entire process of opening the door 30, effectively ensuring the overall stability of the door 30 when it is opened.

[0123] In this invention, during the opening process of the door 30, the first door hinge 51 moves in an arc relative to the first guide line S1 or the second guide line S2, and the second door hinge 52 moves in an arc relative to the third guide line S3 or the fourth guide line S4. Since the first guide line S1 and the second guide line S2 are tangentially connected, the first door hinge 51 can smoothly transition from the first guide line S1 to the second guide line S2 without fluctuation, and the second door hinge 52 can smoothly transition from the third guide line S3 to the fourth guide line S4 without fluctuation. This avoids motion fluctuations caused by changes in the radius of the arc of the guide trajectory line S. The guide trajectory line S formed by the tangential connection of multiple arc segments in the above invention is smooth and without sharp points, guiding the smooth and stable movement of the first door hinge 51 and the second door hinge 52 when the door 30 rotates open, greatly improving the smoothness and stability of the door 30's opening. Furthermore, under the trajectory feature settings of this application, during the opening process of the door 30, the maximum distance of the first side edge W beyond the first body side wall of the door 30 is less than 3mm, effectively limiting the distance of the door corner beyond the first body side wall when the door 30 is opened to within 3mm, further reducing the limitation of the cabinet 100 space on the size of the refrigerator that can be accommodated, further increasing the capacity of the refrigerator, and effectively improving the utilization rate of the cabinet 100 space.

[0124] 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, a fifth guide point P5, a sixth guide point P6, a seventh guide point P7, an eighth guide point P8, 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, a fifth guide point Q5, a sixth guide point Q6, a seventh guide point Q7, and an eighth guide point Q8; combined with Figure 23As shown, in the projection of the top wall of the box 30, 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, the fifth guide point P5, the sixth guide point P6, the seventh guide point P7, the eighth guide point P8, 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, the fifth guide point Q5, the sixth guide point Q6, the seventh guide point Q7, and the eighth guide point Q8 are distributed counterclockwise along the guide trajectory line S.

[0125] In some embodiments of this application, along the direction from the front wall 31 of the door 30 to the rear wall 33 when the door 30 is closed, the distance between the first trajectory line S1 and the side wall of the first body first increases and then decreases; the distance between the second trajectory line S2 and the side wall of the first body first decreases and then increases; and the distance between the fourth trajectory line S4 and the side wall of the first body first increases and then decreases.

[0126] Along the direction from the side wall of the first body to the side wall of the second body, the distance between the third trajectory line S3 and the plane where the pick-up and drop-off port is located first decreases and then increases.

[0127] In this embodiment, the starting guide point P0 is the endpoint of the first trajectory line S1 that is far from the pick-up and put-out port, and the sixth guide point P6 is the endpoint of the first trajectory line S1 that is close to the pick-up and put-out port. That is, the sixth guide point P6 is the tangent point of the first trajectory line S1 and the second trajectory line S2.

[0128] The second guide point P2 is the point on the first trajectory line S1 that is the furthest from the side wall of the first body;

[0129] The first guide point P1 is located between the initial guide point P0 and the second guide point P2; the third guide point P3, the fourth guide point P4, and the fifth guide point P5 are located between the second guide point P2 and the sixth guide point P6, and are successively close to the pick-up and put-out port;

[0130] The seventh guide point P7 and the eighth guide point P8 are located on the second trajectory line S2, and are located on the side near the pick-up and drop-off port, which is the tangent point of the first trajectory line S1 and the second trajectory line S2 (the sixth guide point P6). Among them, the eighth guide point P8 is the point on the second trajectory line S2 with the largest distance from the side wall of the first body.

[0131] Among them, the initial guide point Q0, the first guide point Q1, and the second guide point Q2 are located on the third trajectory line S3, and their distances from the side wall of the first body increase sequentially; wherein, the first guide point Q1 is the point with the smallest distance between the third trajectory line S3 and the plane where the pick-up and drop-off port is located. As a settable method, the tangent point of the second trajectory line S2 and the third trajectory line S3 is denoted as the first tangent point Q', and the first tangent point Q' is the connection point of the second trajectory line S2 and the third trajectory line S3; as shown Figure 3As shown, in one embodiment, the starting guide point Q0 is located on the side away from the first tangent point Q'; that is, when the door 30 is closed, the guide center axis Q is located on the side away from the first tangent point Q'. In another possible configuration, the second guide point Q2 is the tangent point of the third trajectory line S3 and the fourth trajectory line S4, that is, the second guide point Q2 is the endpoint of the third trajectory line S3 away from the first body sidewall.

[0132] The third guide point Q3, the fourth guide point Q4, the fifth guide point Q5, the sixth guide point Q6, the seventh guide point Q7, and the eighth guide point Q8 are located on the fourth trajectory line S4, and their distances from the plane containing the pick-up and drop-off port increase sequentially. The fourth guide point Q4 is the point on the fourth trajectory line S4 with the greatest distance from the side wall of the first body. Alternatively, the eighth guide point Q8 can be the endpoint on the fourth trajectory line S4 furthest from the pick-up and drop-off port. That is, in this embodiment, the initial guide point P0 is the endpoint of the guide trajectory line S closest to the pick-up and drop-off port and the side wall of the first body, and the eighth guide point Q8 is the endpoint on the guide trajectory line S opposite to the initial guide point P0.

[0133] In summary, the initial guide point P0, the first guide point P1, the second guide point P2, the third guide point P3, the fourth guide point P4, the fifth guide point P5, and the sixth guide point P6 are all located on the first trajectory line S1 with radius r1; the sixth guide point P6, the seventh guide point Q7, and the eighth guide point Q8 are all located on the second trajectory line S2 with radius r1. Specifically, the sixth guide point P6 is the tangent point between circles O1 and O2, and it is also the connection point between the first trajectory line S1 and the second trajectory line S2; the second guide point P2 is the point on the first trajectory line S1 with the greatest distance from the side wall of the first body.

[0134] The starting guide point Q0, the first guide point Q1, and the second guide point Q2 are located on the third trajectory line S3 with a radius of r3; among them, the first guide point Q1 is the point with the smallest distance between the third trajectory line S3 and the plane where the pick-up and drop-off port is located.

[0135] The third guide point Q3, the fourth guide point Q4, the fifth guide point Q5, the sixth guide point Q6, the seventh guide point Q7, and the eighth guide point Q8 are located on the fourth trajectory line S4 with a radius of r4. Among them, the fourth guide point Q4 is the point with the smallest distance between the fourth trajectory line S4 and the plane containing the pick-up and drop-off port. The eighth guide point Q8 is the endpoint of the fourth trajectory line S4 furthest from the pick-up and drop-off port.

[0136] In summary, the first trajectory line S1 starts from the initial guide point P0 and extends along an arc of radius r1 from the first guide point P1 to the second guide point P2 in a direction away from the side wall of the first body and close to the pick-up and drop-off port. Then, it extends along an arc of radius r1 from the third guide point P3, the fourth guide point P4, and the fifth guide point P5 to the sixth guide point P6 in a direction close to the side wall of the first body and the pick-up and drop-off port.

[0137] The second trajectory line S2 starts from the sixth guide point P6 and extends along an arc of radius r2 towards the side wall of the first body and the pick-up / placement port, passing through the seventh guide point P7 to the eighth guide point P8. Then it extends along an arc of radius r2 towards the first tangent point Q` in a direction away from the side wall of the first body and towards the pick-up / placement port.

[0138] The third trajectory line S3 starts from the first tangent point Q` and extends along an arc with a radius of r3 in a direction away from the side wall of the first body and close to the pick-up and drop-off port, passing through the starting guide point Q0 to the first guide point Q1. Then it extends along an arc with a radius of r3 in a direction away from the side wall of the first body and the pick-up and drop-off port to the second guide point Q2.

[0139] The fourth trajectory line S4 starts from the second guide point Q2 and extends along an arc of radius r4 away from the side wall of the first body and the pick-up / placement port, passing through the third guide point Q3 to the fourth guide point Q4. Then, it extends along an arc of radius r4 towards the side wall of the first body and away from the pick-up / placement port, passing through the fifth guide point Q5, the sixth guide point Q6, the seventh guide point Q7 to the eighth guide point Q8.

[0140] In some embodiments of this application, the second door hinge 52 is located on the side of the first door hinge 51 near the rear wall 33. The guide portion 60 extends first from the front wall 31 towards the rear wall 33 when the door 30 is closed, then from the first side wall towards the second side wall, and then from the rear wall 33 towards the front wall 31 when the door 30 is closed. The first door hinge 51 moves relative to the guide portion 60, and the second door hinge 52 moves relative to the guide portion 60, so that the door 30 can move inward (towards the second side wall) a certain distance while rotating, effectively compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, limiting the distance of the first side edge W beyond the reference plane M0 to no more than 3mm, effectively avoiding interference between the door 30 and the cabinet 100 when the door is open, further reducing the limitation of the cabinet 100 space on the size of the refrigerator that can be accommodated, and improving the utilization rate of the cabinet 100 space.

[0141] 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 guide center axis P and the guide center axis Q is parallel to the side wall of the first body. That is, when the door 30 is closed, the straight line containing the guide center axis P and the guide center axis Q is parallel to the Y-axis. As an alternative configuration, when the door 30 is closed, the front wall 31 of the door is parallel to the plane containing the loading and unloading opening, the side wall 32 of the door is perpendicular to the front wall 31, and the side wall 32 of the door is parallel or flush with the side wall of the first body; that is, in the projection of the top wall of the housing 10, the side wall 32 of the door when the door 30 is 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 51 moves relative to the guide part 60 towards the rear wall 33 of the door, and the second door hinge 52 moves relative to the guide part 60 at least a certain distance away from the side wall of the first body, so that the door 30 moves inward a certain distance.

[0142] Since there is a relative motion relationship between the guide portion 60 and the first door hinge 51, and between the guide portion 60 and the second door hinge 52, if the door 30 is opened with the guide portion 60 as a stationary reference point, it is equivalent to the first door hinge 51 moving under the constraint of the guide portion 60, and the second door hinge 52 moving under the constraint of the guide portion 60. For ease of description, this application uses the guide portion 60 as a stationary reference point, and the first door hinge 51 and the second door hinge 52 moving relative to the reference point for explanation.

[0143] It should be noted that the setting of the guide trajectory line S described in this invention is a standard setting; in the actual production and manufacturing process of the product, in order to meet the assembly requirements, there may be gaps or processing errors between the two door hinges and the guide part, which may cause the movement trajectory of the two shafts relative to the guide part to be a non-standard guide trajectory line S, but a trajectory line with some deviation from the standard guide trajectory line S as the main line; the above-mentioned deviations are also within the scope of protection of this invention.

[0144] In this embodiment, the central axis of the first door hinge 51 is the guide central axis P, and the central axis of the second door hinge 52 is the guide central axis Q; within the projection of the plane containing the top wall of the box 10, the line segment PQ is denoted as the axis center line segment PQ; the midpoint of the axis center line segment PQ is denoted as the axis center point I.

[0145] like Figures 5-23As shown, the movement of the first door hinge 51 along the guide portion 60 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 52 along the guide portion 60 is equivalent to the movement of the guide center axis Q along the guide trajectory line S. This allows the door 30 to move inward (towards the side wall of the second body) a certain distance while rotating, thereby compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30. This limits the distance of the first side edge W beyond the reference plane M0 to no more than 3mm, effectively preventing interference between the door 30 and the cabinet 100 when the door is opened. The movement of the door 30 relative to the cabinet 10 is equivalent to the relative movement between the two in the plane containing the top wall of the cabinet 10 (or in a 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 51 and the second door hinge 52 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.

[0146] 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.

[0147] 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. The changing point is the midpoint of the axis line segment PQ - the axis center point I; 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.

[0148] like Figure 5 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 51 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 52 is located at the starting guide point Q0 of the guide trajectory line S. That is, when the door 30 is in the closed state, the first door hinge 51 is located at the end of the first trajectory line S1 of the guide portion 60 away from the retrieval opening, and the second door hinge 52 is located on the third trajectory line S3 of the guide portion 60, and close to the side wall of the first body; the first door hinge 51 is located on the side of the second door hinge 52 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, the straight line P0Q0 containing the guide central axis P and the guide central axis is parallel to the side wall of the first body. The above settings can effectively detect whether the assembly is accurate and whether the processing meets the precision requirements after the door 30 and the housing are installed together. This allows for timely adjustments to achieve a high-precision fit between the upper limit shaft of the door 30 and the guide part 60, thus meeting the complex motion requirements of finely controlling the door 30 to complete rotation and inward movement.

[0149] In some embodiments of this application, the second center O2 is located on the straight line P0Q0, that is, P0, O2, and Q0 are on the same straight line, and the straight line is parallel to the side wall of the first body. Specifically, when the door 30 is closed, in the projection of the top wall of the housing 10, the guiding center axis P, the guide center axis Q, and the second center O2 are collinear, and the straight line is parallel to the side wall of the first body. This arrangement allows for effective detection of assembly accuracy after the door 30 is installed with the housing, and also allows for detection of the forming accuracy of the guide part 60, making the assembly accuracy detectable and effectively meeting the complex motion requirements of finely controlling the door 30 to rotate and move inward.

[0150] In this embodiment, under the constraints of the first door hinge 51, the second door hinge 52, and the guide portion 60, 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 51 relative to the guide part 60 and the relative positions of the second door hinge 52 relative to the guide part 60 are as follows:

[0151] 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;

[0152] like Figure 5 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 S, and the center point I of the axis is located at the starting midpoint I0 relative to the hinge. P0, I0, O2, and Q0 are on the same straight line, and the straight line they are on is parallel to the side wall of the first body.

[0153] During the process of the door 30 rotating from the closed state to G1, the first door hinge 51 moves along the first trajectory line S1 in an arc with a radius of r1 in the direction away from the side wall of the first body and closer to the pick-up and put-out opening, and the second door hinge 52 moves along the third trajectory line S3 in an arc with a radius of r3 in the direction away from the side wall of the first body and closer to the pick-up and put-out opening.

[0154] like Figure 6 and Figure 13 As shown, At this time, the door 30 rotates open to G1; the guide center axis P is located at the first guide point P1 of the guide trajectory line S, and the first guide point P1 is located on the side of the starting guide point P0 away from the first body sidewall and close to the pick-up and put-away port; the guide center axis Q is located at the first guide point Q1 of the guide trajectory line S, and the first guide point Q1 is located on the side of the starting guide point Q0 away from the first body sidewall and close to the pick-up and put-away port; wherein, the first guide point Q1 is the point with the smallest distance between the third trajectory line S3 (guide trajectory line S) and the pick-up and put-away port; that is, at this time, the position of the guide center axis Q is the position closest to the pick-up and put-away port during the opening process of the door 30. At this time, the center point I of the axis moves to the first midpoint I1 with the axis center line segment PQ, and the first midpoint I1 is located on the side of the starting midpoint I0 away from the first body sidewall; in some embodiments of this application, the first midpoint I1 is also located on the side of the starting midpoint I0 close to the pick-up and put-away port. G1 can be set to any value in [16°, 20°].

[0155] During this process, the door 30 rotates from G1 to G2 and opens. During the process of the door 30 opening from G1 to G2, the first door hinge 51 continues to move in an arc with a radius of r1 along the first trajectory line S1 in a direction away from the side wall of the first body and closer to the pick-up and put-out opening. The second door hinge 52 moves in an arc with a radius of r3 along the third trajectory line S3 in a direction away from the side wall of the first body and the pick-up and put-out opening.

[0156] like Figure 7 and Figure 14 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 P and the side wall of the first body is at its maximum when the door 30 is opened to G2. At this time, the guide center axis P is located at the second guide point P2 of the guide trajectory line S. The second guide point P2 is located on the side of the first guide point P1 away from the sidewall of the first body and close to the pick-and-place port, and the second guide point P2 is the point with the greatest distance between the first trajectory line S1 and the sidewall of the first body; the guide center axis Q is located at the second guide point Q2 of the guide trajectory line S. The second guide point Q2 is located on the side of the first guide point Q1 away from the sidewall of the first body and the pick-and-place port. In this embodiment, the second guide point Q2 is the tangent point connecting the third trajectory line S3 and the fourth trajectory line S4, and is the endpoint of the third trajectory line S3 away from the sidewall of the first body; the axis center point I moves with the axis center line segment PQ to the second midpoint I2, and the second midpoint I2 is located on the side of the first midpoint I1 away from the sidewall of the first body; in some embodiments of this application, the second midpoint I2 is also located on the side of the first midpoint I1 close to the pick-and-place port.

[0157] In this embodiment, during the opening of the door 30, when the distance between the guide center axis P and the side wall of the first body is at its maximum, the guide center axis Q moves to the tangent point connecting the third trajectory line S3 and the fourth trajectory line S4. The movement of the arc P0P2 segment of the first door shaft 51 relative to the first trajectory line S1 of the guide part 60 corresponds to the movement of the arc Q0Q2 of the second door shaft 52 relative to the second trajectory line S3 of the guide part 60. At the same time that the arc P0P2 segment of the first door shaft 51 relative to the first trajectory line S1 with the same extension direction ends, the second door shaft 52 ends its movement relative to the second trajectory line S3. The above arrangement makes the movement of the first door shaft 51 relative to the guide trajectory line S and the movement of the second door shaft 52 relative to the guide trajectory line S have a phased correspondence, effectively improving the coordination of the movement of the first door shaft 51 and the second door shaft 52, and increasing the smoothness of the opening of the door 30.

[0158] Furthermore, when the guide center axis P moves to the point (second guide point Q2) where the distance between the first trajectory line S1 and the side wall of the first body is the farthest, the guide center axis Q moves to the tangent point (second guide point Q2) where the third trajectory line S3 and the fourth trajectory line S4 connect. Under the constraint of the guide part of the above trajectory features, when the first door hinge 51 moves from inward to outward along the first trajectory line S1 during the opening of the door 30, the second door hinge 52 moves from the third trajectory line S3 to the fourth trajectory line S4. The arrangement of this embodiment makes the movement of the first door hinge 51 and the second door hinge 52 more coordinated and balanced, further improving the smoothness of the opening of the door 30.

[0159] The value of G2 can be set to any value in [43°, 47°]. In this embodiment, when G2 = 45°, the distance between the guide center axis P and the side wall of the first body is the largest, and the guide center axis Q moves to the tangent point where the third trajectory line S3 and the fourth trajectory line S4 are connected.

[0160] like Figure 8 As shown, During this process, the door 30 rotates from G2 to G4 to open. During the process of the door 30 opening from G2 to G4, the first door hinge 51 moves along the first trajectory line S1 in an arc with a radius of r1 towards the side wall of the first body and the pick-up and put-out opening, and the second door hinge 52 moves along the fourth trajectory line S4 in an arc with a radius of r4 away from the side wall of the first body and the pick-up and put-out opening.

[0161] 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 is that the position of the first door hinge 51 relative to the first trajectory line S1 differs with different opening angles, and the position of the second door hinge 52 relative to the fourth trajectory line S4 differs. 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 51 and the guide section 60, and the second hinge 52 and the guide section 60; specifically, for example... Figure 8 and Figure 15 As shown, with This represents the position within the opening angle range, for comparison with other states when the door 30 is opened.

[0162] like Figure 8 and Figure 15 As shown, At this time, the door 30 rotates and opens to G3; the guide center axis P is located at the third guide point P3 of the first trajectory line S1, and the third guide point P3 is located on the side of the second guide point P2 near the first body sidewall and the pick-up / placement port; the guide center axis Q is located at the third guide point Q3 of the fourth trajectory line S4, and the third guide point Q3 is located on the side of the second guide point Q2 away from the first body sidewall and the pick-up / placement port; the axis center point I moves with the axis center line segment PQ to the third midpoint I3, and the third midpoint I3 is located on the side of the second midpoint I2 away from the first body sidewall; in some embodiments of this application, the third midpoint I3 is also located on the side of the second midpoint I2 near the pick-up / placement port. G3 can be set to any value in [52°, 56°].

[0163] like Figure 9 and Figure 16 As shown, At that time, the door 30 rotates and opens to G4; during the entire opening process of the door 30, the distance between the guide center axis Q and the side wall of the first body is the greatest when the door 30 is opened to G4. At this time, the guide center axis P is located at the fourth guide point P4 of the guide trajectory line S. The fourth guide point P4 is located on the side of the third guide point P3 near the side wall of the first body and the pick-and-place port. The guide center axis Q is located at the fourth guide point Q4 of the guide trajectory line S. 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 pick-and-place port. The fourth guide point Q4 is the point with the greatest distance between the fourth trajectory line S4 and the side wall of the first body, and it is also the point with the greatest distance between the guide trajectory line S and the side wall of the first body. Among them, the center point I of the axis moves to the fourth center point I4 with the axis center line segment PQ. The fourth center point I4 is located on the side of the third center point I3 away from the side wall of the first body. In some embodiments of this application, the fourth center point I4 is also located on the side of the third center point I3 away from the pick-and-place port. G4 can be set to any value in [77°, 81°]. In this embodiment, when G4 = 79°, the distance between the guide center axis Q and the side wall of the first body is the greatest.

[0164] like Figure 10 As shown, During this process, the door 30 rotates from G4 to G6 to open. During the process of the door 30 opening from G4 to G6, the first door hinge 51 continues to move in an arc with a radius of r1 along the first trajectory line S1 towards the side wall of the first body and the pick-up and put-out opening, and the second door hinge 52 moves in an arc with a radius of r4 along the fourth trajectory line S4 towards the side wall of the first body and towards the pick-up and put-out opening.

[0165] 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 is that the position of the first door hinge 51 relative to the first trajectory line S1 differs with different opening angles, and the position of the second door hinge 52 relative to the fourth trajectory line S4 differs. 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 51 and the guide section 60, and the second hinge 52 and the guide section 60; specifically, for example... Figure 10 and Figure 17 As shown, with This represents the position within the opening angle range, for comparison with other states when the door 30 is opened.

[0166] like Figure 10 and Figure 17 As shown, At this time, the door 30 rotates and opens to G5; the guide center axis P is located at the fifth guide point P5 of the first trajectory line S1, and the fifth guide point P5 is located on the side of the fourth guide point P4 near the side wall of the first body and the pick-up and put-out port; the guide center axis Q is located at the fifth guide point Q5 of the fourth trajectory line S4, and the fifth guide point Q5 is located on the side of the fourth guide point Q4 near the side wall of the first body and away from the pick-up and put-out port; in this embodiment, the center point I of the axis moves to the fifth center point I5 with the axis center line segment PQ, and the fifth center point I5 is located on the side of the fourth center point I4 near the side wall of the first body; 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-up and put-out port.

[0167] In some embodiments of this application, such as Figure 10 and Figure 17 As shown, when the door 30 opens to G2, the guide center axis moves to the second guide point P2; when the door opens to G5, the guide center axis P moves to the fifth guide point P5. The second guide point P2 is the midpoint of arc P0P5, and G2 = 1 / 2 G5. This configuration makes the stroke distribution of the first door hinge 40 relative to the guide part 60 more uniform, ensuring stability, uniformity, and smoothness of the door 30 during the opening process. G2 can be set to 45°, and G5 to 90°.

[0168] In some embodiments of this application, G5 = 90°; that is, when the door 30 is opened to 90°, the guide center axis P is located at the fifth guide point P5 of the first trajectory line S1, and the guide center axis Q is located at the fifth guide point Q5; wherein, the straight line P0P5 containing the initial guide point P0 and the fifth guide point P5 is parallel to the side wall of the first body, that is, P0, P5, and Q0 are collinear and parallel to the side wall of the first body. That is, the intersection of the straight line P0Q0 containing the initial guide point P0 and the initial guide point Q0 and the first trajectory line S1 is the fifth guide point Q5. When the door 30 is opened, when the guide center axis P moves to the fifth guide point Q5, the guide center axis Q moves to the fifth guide point Q5, and the opening angle of the door 30 is 90°. With P0, P5, and Q0 aligned on the same straight line, the processing and assembly accuracy can be determined by detecting the position of the door 30 when it is closed and when it is opened by 90° after product processing. This allows for timely correction and ensures high-precision fit of the structure in this application, achieving precise control of the door 30.

[0169] In this embodiment, in the projection of the top wall of the housing 10, when the door 30 is closed, the straight line containing the guide center axis P and the guide center axis Q is parallel to the side wall of the first body. When the door 30 is opened to 90°, the straight line containing the guide center axis P and the guide center axis Q is parallel to the plane where the retrieval and placement port is located, that is, when the door 30 is opened to 90°, the straight line containing the guide center axis P and the guide center axis Q is perpendicular to the side wall of the first body. In this embodiment, P5Q5 is parallel to the plane where the retrieval and placement port is located, that is, P5Q5 is perpendicular to the side wall of the first body, and G5 = 90°. In some embodiments of this application, combined with... Figure 5 As 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;

[0170] When the door 30 is opened to G5 = 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 fifth positioning point P5 of the guide trajectory line S; the distance between the fifth positioning point P5 and the front wall 31 of the door is L2.

[0171] It can be set that L1 > L2; when the door 30 is opened to 90°, the front wall 31 of the door is located inside the side wall of the first body. As another feasible method, 0 ≤ L1 - L2 ≤ 3mm; in this case, the door 30 is located inside the side wall of the first body, which can reduce the restriction of the cabinet 100 on the door 30 when the door 30 is opened at an angle greater than 90°, thereby increasing the value of the maximum angle that the door 30 can be opened to, making it convenient to take out and put in items.

[0172] 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.

[0173] like Figure 11 and Figure 18 As shown, At that time, the door rotates 30 degrees and opens to G6; At this time, the guide center axis P is located at the sixth guide point P6 of the guide trajectory line S. The sixth guide point P6 is located on the side of the fifth guide point P5 near the side wall of the first body and the pick-and-place port. The guide center axis Q is located at the sixth guide point Q6 of the guide trajectory line S. The sixth guide point Q6 is located on the side of the fifth guide point Q5 near the side wall of the first body and away from the pick-and-place port. Among them, the sixth guide point P6 is the tangent point connecting the first trajectory line S1 and the second trajectory line S2, and is the endpoint of the first trajectory line S1 near the pick-and-place port. The center point I of the axis moves to the sixth center point I6 with the axis center line segment PQ. The sixth center point I6 is located on the side of the fifth center point I5 near the side wall of the first body. In some embodiments of this application, the sixth center point I6 is also located on the side of the fifth center point I5 away from the pick-and-place port. G6 can be set to any value in [102°, 106°]. In this embodiment, when G6 = 104°, the guide center axis P moves to the tangent point connecting the first trajectory line S1 and the second trajectory line S2.

[0174] At that time, the door 30 rotates open from G6 to G. max The process; the above door 30 rotates open from G6 to G. max During the process, the first door hinge 51 moves along the second trajectory line S2 in an arc with a radius of r2 toward the side wall of the first body and the pick-up and put-out port, while the second door hinge 52 continues to move along the fourth trajectory line S4 in an arc with a radius of r4 toward the side wall of the first body and toward the pick-up and put-out port.

[0175] like Figure 12 and Figure 19 As shown, At that time, the door 30 rotates open to G. max In this embodiment, At this time, the guide center axis P is located at the seventh guide point P7 on the guide trajectory line S. The seventh guide point P7 is located on the side of the sixth guide point P6 near the side wall of the first body and the pick-and-place port. The guide center axis Q is located at the seventh guide point Q7 on the guide trajectory line S. The seventh guide point Q7 is located on the side of the sixth guide point Q6 near the side wall of the first body and the pick-and-place port. Among them, the seventh guide point Q7 is on the second trajectory line S2. The axis center point I moves to the seventh guide point Q7 with the axis center line segment PQ. The seventh guide point Q7 is located on the side of the sixth center point I6 near the side wall of the first body. In some embodiments of this application, the seventh guide point Q7 is also located on the side of the sixth center point I6 away from the pick-and-place port. G can be set. max For any value in [107°, 110°], the door 30 can be opened to a larger position greater than 90°, so that the rear wall 33 of the door is exposed forward, facilitating the retrieval and placement of items; in this embodiment, G max When the angle is 109°, the guide center axis Q moves to the end of the fourth trajectory line S4 that is far from the pick-up and drop-off port.

[0176] In this embodiment, 0° < G1 < G2 < G3 < G4 < G5 < G6 < G max The above G1, G2, G3, G4, G5, G6, G max The angles are recorded in sequence as the first angle, the second angle, the third angle, the fourth angle, the fifth angle, the sixth angle, and the maximum angle.

[0177] It should be noted that in the above embodiments, the angle range of each segment angle is a settable angle range, and the setting in this embodiment is not limited to the angle ranges listed above.

[0178] In this embodiment, during the opening process of the door 30, the guide center axis P moves towards the side wall of the first body and the pick-up / drop-off port relative to the guide trajectory line S, while the guide center axis Q moves in an arc with a radius of r4 relative to the fourth trajectory line S4 throughout the entire process. The movement stages of the first door axis 51 and the second door axis 52 are corresponding, which increases the coordination of the movement of the first door axis 51 and the second door axis 52 and improves the smoothness of the opening of the door 30.

[0179] When the door 30 opens from the closed state to stage G2, the movement of the first door hinge 51 relative to the first trajectory line S1 in a direction away from the first body sidewall and closer to the pick-up / place port corresponds to the movement of the second door hinge 52 relative to the third trajectory line S3. Throughout the entire process of opening the door 30, the movement stages of the first door hinge 51 and the second door hinge 52 are consistent, which increases the coordination of the movement of the first door hinge 51 and the second door hinge 52 and improves the smoothness of opening the door 30.

[0180] In the above embodiments, when the door 30 is opened to the maximum angle G maxDuring the opening process, the first door hinge 51 moves relative to the guide part 60 and moves in a circular arc along the first trajectory line S1 or the second trajectory line S2 in one direction; the second door hinge 52 moves relative to the guide part 60 and moves in a circular arc along the third trajectory line S3 or the fourth trajectory line S4 in one direction. That is, throughout the entire opening process of the door 30, both the first door hinge 51 and the second door hinge 52 maintain circular movement without retraction, ensuring that the force direction of the first door hinge 51 and the second door hinge 52 remains consistent, resulting in a better feel when opening and closing the door and improving the user experience; additionally, it extends the lifespan of the guide part 60. Furthermore, throughout the entire opening process of the door 30, the first door hinge 51 and the second door hinge 52 move in one direction under the guidance of the guide trajectory line S without retraction, ensuring that there is no acceleration between stopping and resuming movement during the entire opening process of the door 30, resulting in smoother movement of the door 30.

[0181] Based on the positions of the two limiting axes (first door hinge 51 and second door hinge 52) relative to the limiting part (guide part 60) when the door 30 is opened to a specific angle, it can be seen that the overall cooperation relationship between the first door hinge 51 and the guide part 60 has the following two stages: during the process of the door 30 opening from the closed state to G2, the first door hinge 51 moves along the first trajectory line S1 of the guide part 60 in a direction away from the side wall of the first body and closer to the pick-up and put-out opening; the door 30 opens from G2 to G... max During the process, the first door hinge 51 moves along the first trajectory line S1 of the guide part 60 towards the direction close to the side wall of the first body and the pick-up and put-out port;

[0182] The following is a detailed explanation of the relative movement between the first hinge 51 and the guide section 60, based on the two stages of their movement:

[0183] (1) The first stage, combined with Figures 5-7 , Figures 13-14 As shown, the process of the door 30 rotating from the closed state to G2.

[0184] In this first stage, the door 30 opens from 0° through G1 to G2. During this process, the guide center axis P moves along the first trajectory line S1 from the starting guide point P0 in an arc with a radius of r1, moving away from the side wall of the first body and closer to the pick-up and put-out opening; the guide center axis Q moves along the third trajectory line S3 from the starting guide point Q0, first moving away from the side wall of the first body and closer to the pick-up and put-out opening in an arc with a radius of r3, and then moving away from the side wall of the first body and away from the pick-up and put-out opening in an arc with a radius of r3.

[0185] Specifically, the guiding center axis P moves from the starting guiding point P0 along the guiding trajectory line S (the first trajectory line S1) sequentially through the first guiding point P1, the second guiding point P2, and then to the third guiding point P3; the guiding center axis Q moves from the starting guiding point Q0 along the guiding trajectory line S (the third trajectory line S3) sequentially through the first guiding point Q1, the second guiding point Q2, and then to the third guiding point Q3.

[0186] During the opening process in the first stage above, with the hinge (guide part 60) as the reference, as the door 30 opens from 0° to G2, the movement trend of the central point I along the axis line segment PQ is I0→I1→I2. 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 counterclockwise from P0Q0 and moves inward sequentially to P1Q1 and P2Q2. That is, the movement trend of the axis line segment PQ is P0Q0→P1Q1→P2Q2.

[0187] Since the guide part 60 is set 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 the door 30 opening from the closed state to G2, the door 30 rotates counterclockwise and moves inward relative to the cabinet 10. That is, the setting of this embodiment realizes that the door 30 opens and moves inward a certain distance at the same time, effectively compensating for the outward displacement of the first side edge W caused by the simple rotation of the door 30, limiting the distance of the door 30 beyond the first side wall during the opening process to within 3mm, effectively avoiding interference between the door 30 and the cabinet 100, further reducing the limitation of the cabinet 100 space on the size of the refrigerator that can be accommodated, and effectively increasing the utilization rate of the refrigerator in the cabinet 100 space.

[0188] During the opening process in the first stage described above, based on the changing trend of the movement trajectory of the second door hinge 52 relative to the guide trajectory line S (the third trajectory line S3), 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:

[0189] The first segment, such as Figures 5-6 , Figure 13 As shown, the door 30 is opened from the closed state to G1; during this process, the guide center axis Q moves in an arc with a radius of r1 from the starting guide point Q0 along the third trajectory line S3 toward the direction away from the side wall of the first body and closer to the pick-up and put-out port, and when the door is opened to G1, the guide center axis Q moves to the first guide point Q1 where the distance between the third trajectory line S3 and the pick-up and put-out port is the smallest.

[0190] The second segment, such as Figures 6-7 , Figure 14 and Figure 20As shown, the door 30 is opened from G1 to G2; during this process, the guide center axis Q moves from the first guide point Q1 along the third trajectory line S3 in a direction away from the side wall of the first body and the pick-up and put-out port, and when the door is opened to G2, the guide center axis Q moves to the second guide point Q2 at the tangent point where the third trajectory line S3 and the fourth trajectory line S4 are connected.

[0191] Combining the trajectory characteristics of the first segment, the second segment, and the guide trajectory line S, 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 G1.

[0192] (2) The second stage, combined with Figures 7-12 ,like Figures 15-21 As shown, door 30 is rotated open from G2 to G. max The process.

[0193] Door 30 is opened from G2 to G max In this process, the guide center axis P first moves along the first trajectory line S1 from the second guide point P2 in an arc with radius r1 towards the side wall of the first body and the pick-up / placement port, and then moves along the second trajectory line S2 in an arc with radius r2 towards the side wall of the first body and the pick-up / placement port; the guide center axis Q first moves along the guide trajectory line S (the fourth trajectory line S4) from the second guide point Q2 in an arc with radius r4 away from the side wall of the first body and the pick-up / placement port, and then moves along the first body side wall and away from the pick-up / placement port in an arc with radius r4.

[0194] Specifically, the guiding center axis P moves from the second guiding point P2 along the guiding trajectory line S (the first trajectory line S1 and the second trajectory line S2) sequentially through the third guiding point P3, the fourth guiding point P4, the fifth guiding point P5, the sixth guiding point P6, and finally to the seventh guiding point P7; the guiding center axis Q moves from the second guiding point Q2 along the guiding trajectory line S (the fourth trajectory line S4) sequentially through the third guiding point Q3, the fourth guiding point Q4, the fifth guiding point Q5, the sixth guiding point Q6, and finally to the seventh guiding point Q7.

[0195] During the second stage of opening, with the hinge (guide part 60) as the reference, the door 30 opens from G3 to G... maxDuring the process, the movement trend of the central point I along the axis line segment PQ is I2→I3→I4→I5→I6→I7 (where I2→I3→I4 is an inward movement trend, and I4→I5→I6→I7 is an outward movement trend). That is, during the opening of the door 30, relative to the hinge, the central point I first moves inward and then outward. During this opening process, the axis line segment PQ rotates counterclockwise from P2Q2 and moves sequentially to P3Q3, P4Q4, P5Q5, P6Q6, and P7Q7. That is, the movement trend of the axis line segment PQ is P2Q2→P3Q3→P4Q4→P5Q5→P6Q6→P7Q7.

[0196] Since the guide part 60 is 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 G2 to G... max Throughout the process, the door 30 rotates counterclockwise relative to the cabinet 10, moving inward first and then outward. In this embodiment, the door 30 opens while simultaneously moving inward and then outward a certain distance. This inward movement compensates 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. Furthermore, the door 30 moves outward when it is opened to its maximum angle to reduce obstruction of the access opening.

[0197] 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→I6→I7), causing the door 30 to move inward first and then outward. In addition, with the cabinet 10 as a stationary reference, the door 30 has a tendency to move inward first and then outward, which effectively compensates for the outward displacement of the first side edge W caused by the simple rotation of the door 30. The distance that the door 30 exceeds the side wall of the first body during the opening process is limited to within 3mm, effectively avoiding interference between the door 30 and the cabinet 100, and further reducing the limitation of the cabinet 100 space on the size of the refrigerator that can be accommodated.

[0198] During the opening process in the second stage described above, based on the changing trend of the movement trajectory of the second door hinge 52 relative to the guide trajectory line S (fourth trajectory line S4), the second stage is divided into two opening segments; specifically, the second stage includes a third segment and a fourth segment. The specific movement of each segment is as follows:

[0199] The third segment, such as Figures 7-9 , Figures 15-16As shown, the door 30 opens from G2 to G4. During this process, the guide center axis Q moves in an arc from the second guide point Q2 along the fourth trajectory line S4 away from the side wall of the first body and the pick-up / drop-off port. When the door opens to G4, the guide center axis Q moves to the fourth guide point Q4, which is the furthest from the side wall of the first body. During this process, the movement trend of the axis center point I with the axis center line segment PQ is I2→I3→I4, and the axis center point I moves inward. That is, during this opening process, the axis center line segment PQ rotates counterclockwise from P2Q2 and moves inward sequentially to P3Q3 and P4Q4 (P2Q2→P3Q3→P4Q4), and the door 30 continues to move inward.

[0200] The fourth segment, such as Figures 9-12 , Figures 17-21 As shown, door 30 is opened from G4 to G max During this process, the guide center axis Q moves from the fourth guide point Q4 along the fourth trajectory line S4 towards the side wall of the first body and away from the pick-up / drop-off port, and when the door 30 opens to G... max At this time, the guide center axis Q moves to the endpoint of the fourth trajectory line S4, which is far from the second guide point Q2—the seventh guide point Q7. During this process, the movement trend of the center point I along the axis line segment PQ is I4→I5→I6→I7 (P4Q4→P5Q5→P6Q6→P7Q7), and the center point I moves outward; that is, during this opening process, the axis line segment PQ rotates counterclockwise from P4Q4 and moves inward sequentially to P5Q5, P6Q6, and P7Q7, while the door body 30 continues to move outward.

[0201] Based on the trajectory characteristics of the third and fourth segments and the guide trajectory line S, it is concluded that during the entire opening process of the door 30, the door 30 moves inward in the third segment and outward in the fourth segment. The distance between the guide center axis Q and the side wall of the first body is minimized when the door 30 is opened to G4.

[0202] In summary, combining the first, second, third, and fourth segments, it can be seen that during the entire opening process of the door 30, from the closed state to G4, the central point I moves inward throughout the entire process. This effectively compensates for the outward displacement of the first side edge W caused by the simple rotation of the door 30, limiting the distance of the door 30 beyond the first side wall during the opening process to within 3mm. This effectively avoids interference between the door 30 and the cabinet 100, further reducing the limitations of the cabinet 100 space on the size of the refrigerator that can be accommodated.

[0203] Door 30 is opened from G4 to G maxDuring the process, the central point I of the axis moves outward throughout; that is, in this embodiment, the door 30 moves outward in the later stage of opening to compensate for the displacement of the door 30 moving inward in the early stage of opening, so as to reduce the obstruction of the access opening by the door 30 caused by the inward movement of the door 30 required to achieve embedded installation, thereby increasing the space utilization rate of the storage room and effectively increasing the lateral size of the storage drawer set in the storage room.

[0204] Furthermore, when the door 30 is opened to 90°, the front wall 31 of the door 30 is located inside the side wall of the first body. This reduces the restriction imposed by the cabinet 100 on the door 30 when the door 30 is opened to an angle greater than 90°, ensuring that the door 30 can be opened to the maximum angle, making it convenient to take out and put in items.

[0205] In this application, the guide trajectory line S of the guide part 60 is formed by four tangentially connected arcs of different radii. In this embodiment, the guide part 60 is configured as a guide groove. Within the existing thickness range of the refrigerator door 30 (3.5cm-5cm) and the setting of the door hinge diameter, the groove wall of the guide groove is also formed by four tangentially connected arcs of different radii in the plane of the top wall of the cabinet 10, so as to form a smooth groove wall, which efficiently and smoothly guides the first door hinge 51 and the second door hinge 52 to move; and makes the door 30 move inward a certain distance when it is opened, so as to effectively... The first side edge W is compensated for by moving outward during simple rotation, thus limiting the distance by which the first side edge W of the door 30 extends beyond the first side wall to within 3mm. This reduces the limitation of the cabinet 100 space on the size of the refrigerator that can be accommodated. Then, the door 30 is moved outward a certain distance to compensate for the inward displacement during the initial opening phase. This reduces the obstruction of the access opening caused by the inward movement of the door 30 required for embedded installation, thereby increasing the space utilization of the storage room and effectively increasing the lateral dimensions of the storage drawers. This embodiment makes the opening process of the door 30 smoother and can meet the needs of the door 30's position at different times, achieving precise control of the door 30.

[0206] In some embodiments of this application, the following settings may be configured: Figure 22 As shown, the sixth guide point Q6 is the endpoint of the fourth trajectory line S4 (compared to Embodiment 1, the seventh guide point Q7 is the endpoint of the fourth trajectory line S4); that is, the maximum opening angle of the door 30 is G6 (G max =G6). The door is opened to its maximum angle G. max When =G6, the guide center axis P moves to the tangent point (sixth guide point P6) where the first trajectory line S1 and the second trajectory line S2 connect, and the guide center axis Q moves to the end point (Q6) of the fourth trajectory line S4 that is far away from the pick-up and drop-off port.

[0207] With the above settings, the guide center shaft P moves in an arc with a radius of r1 throughout its entire movement. The guide center shaft P first moves in an arc with a radius of r3, and then in an arc with a radius of r4. The positions of the first door hinge 51 and the second door hinge 52 relative to the guide trajectory line S at specific angles are the same as described above, and will not be repeated here. The second trajectory line S2 tangentially connects the first trajectory line S1 and the third trajectory line S3, effectively improving the machining accuracy of the guide part and ensuring precise control of the door body 30.

[0208] Within the plane of the top wall of the housing 10, as the door 30 opens, the door 30 rotates around its changing axis center point I. For example... Figure 5 —— Figure 23 As shown, during the opening of door 30, the center point I first moves away from the side wall of the first body and towards the retrieval opening, then moves away from both the side wall and the retrieval opening, then moves towards the side wall of the first body and away from the retrieval opening, and finally moves towards both the side wall and the retrieval opening. In summary, when door 30 opens, it tends to move inward and backward first, then inward and forward, then outward and forward, and finally outward and backward.

[0209] Combination Figure 23 As shown, the movement trend of the door 30 is further explained; in this embodiment, in the projection of the top wall of the box 10, when the door 30 is opened, the position of the first side edge W relative to the hinge is located at W; the position of the second side edge N relative to the hinge is located at N; and the position of the side sealing edge F relative to the hinge is located at F.

[0210] Combination Figures 24-30 As shown, assuming the door 30 rotates around the rotation center I of the previous state to the adjacent next state; then, under this motion trend, when the door 30 is open, the first side edge W is located at W' relative to the hinge; the second side edge N is located at N' relative to the hinge; and the side sealing edge F is located at F' relative to the hinge. Figure 24 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 25 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 26- Figure 30 Compare them.

[0211] 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:

[0212] 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.

[0213] During the process of opening the door 30 from G3 to G4, in this application, the positions W of the first side edges are all located on the side away from the first body sidewall and the retrieval opening; the positions N of the second side edges are all located on the side away from the first body sidewall and 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 the retrieval opening. That is, during the process of opening the door 30 from G3 to G4, the door 30 has a tendency to move inward and forward.

[0214] During the opening of door 30 from G4 to G6, in this application, the positions W of the first side edges are all located on the side of W' closest to the first body sidewall and away from the retrieval opening; the positions N of the second side edges are all located on the side of N' closest to the first body sidewall and away from the retrieval opening; and the positions F of the side sealing edges are all located on the side of F' closest to the first body sidewall and away from the retrieval opening. That is, during the opening of door 30 from G3 to G6... max During the process, the door 30 has a tendency to move outward and forward.

[0215] Door 30 is opened from G6 to G max During the process, in this application, the position W of the first side edge is always located on the side of W' closest to the side wall of the first body and the retrieval port; the position N of the second side edge is always located on the side of N' closest to the side wall of the first body and the retrieval port; the position F of the side sealing edge is always located on the side of F' closest to the side wall of the first body and the retrieval port. That is, the door 30 is opened from G6 to G max During the process, the door 30 has a tendency to move outward and backward.

[0216] Based on the movement of the door 30 during the opening process, the displacement of the door 30 along the Y-axis is explained;

[0217] 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. During the process of opening the door body 30 from the closed state to G1, the first mating part and the second mating part gradually separate.

[0218] As a configurable method, during the process of opening the door 30 from the closed state to G3, the central point I of the axis moves away from the side wall of the first body and closer to the pick-up and put-out port, and the door 30 has a tendency to move inward and backward when it is opened;

[0219] It should be noted that, in this embodiment, during the process of the door 30 opening from the closed state to G1, the distance by which the door 30 rotates and opens by a unit angle to approach the pick-up and put-down opening (the displacement generated along the Y-axis direction) is denoted as ζ1;

[0220] During the process of the door 30 opening from G1 to G2, the distance that the door 30 rotates and opens by a unit angle to approach the pick-up and put-out opening (the displacement generated along the Y-axis) is denoted as ζ2; where ζ1>ζ2;

[0221] With the above settings, during the process of opening the door 30 from the closed state to G1, the door 30 moves inward and moves quickly towards the side closer to the pick-up and put-out port 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 and unlocking quickly.

[0222] like Figures 31-35 As shown, in one configurable manner, the second mating part is disposed on the locking block 6 located at the lower end of the door body 30. For example... Figures 31-35 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.

[0223] 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 51 and the second door hinge 52 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.

[0224] 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 51 and the second door hinge 52 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 44. 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.

[0225] 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 44. The stop part 44 and the connecting part 401 of the hinge together define a hook gap 45; that is, the hook gap 45 is located on the side of the stop part 44 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 45, the stop part 44 is located in the lock hook, and the lock hook on the door 30 hooks the stop part 44 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 44, thereby disengaging from the stop part 44.

[0226] like Figures 33-35 As shown, when the door 30 closes from the open state, as the door 30 rotates to close, the free end of the hook 61 gradually approaches the stop 44. When the hook 61 and the stop 44 come into contact, the door 10 continues to close. Under the action of the stop 44, the hook 61 deforms, the stop 44 enters the hook 61, and the free end of the hook 61 enters the hook gap 45; the lock hook locks with the hinge plate 40, thus locking the door 30 and the housing 10. When the door 30 closes from the open state to a set angle, the hook 61 releases its elastic energy, and the door 30 automatically closes under the action of the hook 61 and the stop 44. When the door 30 opens from the closed state, the process is the reverse of the closing process, and will not be described further here.

[0227] In some embodiments of this application, during the process of the door 30 opening from G1 to G3, as the opening angle of the door 30 increases, the displacement of the door 30 relative to the housing 10 near the loading and unloading port decreases for each unit angle of rotation. This effectively avoids excessive rearward (towards the housing 10) movement of the door 30, which would cause interference between the counterclockwise rotating door sidewall 33 and the housing 10, thus ensuring the effectiveness of the door 30's rotational opening.

[0228] It should be noted that the above opening stage is based on the premise that the door 30 can be rotated and opened normally, and then moves inward a certain distance. Since the inner cavity of the door seal 20 has a certain amount of compressible deformation, the door 30 can move backward a certain distance when it is rotated and opened, and the door seal 20 will not interfere with the box 10, thus preventing the door 30 from being unable to open.

[0229] In some other embodiments of this application, during the process of opening the door 30 from the closed state to G3, the distance by which the door 30 rotates and opens by a unit angle to approach the pick-up and put-out opening (the displacement generated along the Y-axis) is denoted as ζ3; the ζ3 can be set to no more than 0.1 mm; that is, during the process of opening the door 30 from the closed state to G3, the average speed of the door 30 moving backward is small, and the distance of the door 30 moving backward is very small. On the one hand, this can effectively prevent the door 30 from moving backward too much, which would cause the door seal 20 to be excessively squeezed and prevent the door 30 from being unable to open; on the other hand, it can effectively prevent interference between the counterclockwise rotating door sidewall 33 and the box 10 caused by the door 30 moving backward too much during this process, thus ensuring the effectiveness of the door 30 rotating and opening.

[0230] In some embodiments of this application, the door 30 is opened from the closed state to G3, and the distance the door 30 moves toward the pick-up and drop-off port is denoted as ζ`1;

[0231] During the process of opening the door 30 from G3 to G6, the center point I of the axis always moves away from the retrieval opening, and the door 30 has a tendency to move forward when it opens. In this embodiment, the distance that the door 30 moves away from the retrieval opening from G3 to G6 is denoted as ζ`2; where ζ`2:ζ`1 is any value from 0.5 to 1.5. This is to make the door 30 move forward in the later stage of rotational opening to compensate for the displacement of the door 30 moving backward in the early stage of opening, so as to reduce the maximum angle G that the cabinet 100 can open the door 30 to. max The door 30 is restricted and prevented from moving too far forward and detaching from the housing 10, which would cause the door 30 to become unstable.

[0232] Door 30 is opened from G6 to G max During the process, the center point I moves towards the pick-up / drop-off port, and the door 30 tends to move backward when it opens; in this embodiment, the door 30 opens from G6 to G max The distance by which the door 30 moves towards the retrieval opening is denoted as ζ`3; where ζ`3:ζ`2 is any value between 0.05 and 0.15. Since the guide trajectory line S in this application is formed by four tangentially connected arc segments, due to the characteristics of the trajectory line, when the opening angle of the door 30 is sufficiently large, the door 30 will tend to move outward and backward. To avoid this backward displacement offsetting the backward displacement of the door 30 from opening from G3 to G6, this embodiment limits the values ​​of ζ`3:ζ`2 to meet the requirement of the maximum opening angle of the door 30 under the trajectory characteristics of this invention. It can be set that △G=G max -G6, △G belongs to any value from 4 to 10°. In this application, ζ`2 / ζ`1>ζ`3 / ζ`2, so as to satisfy the needs of each stage when the guide part with the trajectory characteristics of the present invention guides the movement of the first door shaft 51 and the second door shaft 52.

[0233] Based on the movement of the door 30 during the opening process, the displacement of the door 30 along the X-axis is explained;

[0234] In this embodiment, during the process of the door 30 opening from the closed state to G4, the distance by which the door 30 rotates and moves inward by a unit angle (the displacement generated along the X-axis direction) is denoted as ξ1.

[0235] Door 30 is opened from G4 to G max During the process, the distance by which the door 30 rotates and opens outward by a unit angle (the displacement generated along the X-axis) is denoted as ξ2; where ξ2 > ξ1; so that the door 30 moves outward rapidly in the later stage of opening, in order to compensate for the lateral displacement of the door 30 moving inward in the early stage within a small angle range, thereby reducing the obstruction of the pick-up and put-out opening when the door 30 is opened to the maximum angle.

[0236] In some embodiments of this application, combined with Figures 5-12 As shown, the door 30 is opened from the closed state to the maximum angle G. max During the process, the centroid plane K (not shown in the figure) lies between the first door hinge 51 and the second door hinge 52 throughout the entire opening stroke. That is, the door body 30 is positioned between the first door hinge 51 and the second door hinge 52 throughout the entire opening stroke (0°~G°). max In this configuration, the centroid plane K is always located between the first door hinge 51 and the second door hinge 52, resulting in better force distribution on the door body 30 and more stable door opening.

[0237] As a possible configuration, within the projection of the top wall of the housing 10, the centroid plane K 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 K is located between the first door hinge 51 and the second door hinge 52 (even passing through the midpoint of the axis line segment PQ), effectively enhancing the stability of the door 30 during the entire opening process.

[0238] In some embodiments of this application, combined with Figure 3 In 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.

[0239] Optionally, the central axis of the first door hinge 51 is 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 housing 10, the guide central axis P is located on the angle bisector H. This configuration facilitates the inspection of whether the first door hinge 51 and the second door hinge 52 meet the processing accuracy requirements after they are formed on the door body 30. It also allows for the detection of whether the assembly is in place based on the position of the first door hinge 51 and the guide part 60 when the door body 30 is closed, thereby achieving high-precision fit to meet the complex motion requirements of finely controlling the door body 30 to complete rotation and inward movement.

[0240] In some embodiments of this application, combined with Figures 5-12 As shown, in this embodiment, a first reference plane M1 and a second reference plane M2 are further defined. See also... Figure 23 As 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.

[0241] During the opening of the door 30, the first side edge W moves as the door 30 opens, and its trajectory is recorded as the first side edge trajectory line T. In this embodiment, in the projection of the top wall of the box 10, as the opening angle of the door 30 increases, the first side edge W first moves towards the direction closer to the first reference plane M1 and the second reference plane M2, and then moves away from the first reference plane M1 and closer to the second reference plane M2.

[0242] When the door 30 is opened to G', the distance between the first side edge W and the first reference plane M1 is the smallest; that is, when the door 30 is opened to G', the first side edge W is located outside the reference plane M0, and its distance from the reference plane M0 is the largest. In this embodiment, G' ∈ [30°, 40°] any value; as an optional setting, G' = 35°; that is, when the door 30 is opened to a smaller angle (35°), the distance by which the first side edge W extends beyond the outer side of the first body sidewall is the largest, which determines the required gap size between the door 30 and the cabinet 100.

[0243] As a configurable method, during the process of the door 30 opening from the closed state to G5 = 90°, the movement trajectory of the first side edge W is an arc; that is, during the process of the door 30 opening from the closed state to G5 = 90°, the first side edge W performs an arc movement. The radius of the circle containing the arc-shaped movement trajectory of the first side edge W during the process of the door 30 opening from the closed state to G5 = 90° is denoted as R; where R is configurable, r1 ∈ [6, 17]. This configuration limits the distance of the first side edge W beyond the sidewall of the first body to no more than 3mm, and makes the movement of the first side edge smooth and regular during the opening of the door 30. It should be noted that in this invention, the door 30 moves from 90° to G5 = 90°... max (G max During the opening process (>90°), the first side edge W moves in a non-circular arc motion; the first side edge W moves rapidly toward the direction of the pick-up and drop-off port.

[0244] In some embodiments of this application, the central angle of the arc-shaped side edge trajectory line W0W5 formed by the door 30 opening from the closed state to G5 = 90° is denoted as α. W As in some embodiments of this application, α W =G`, that is, the central angle α of the arc W0W5 formed by the first side edge trajectory arc of the door 30 from the closed state to G5 = 90°. W The angle G' of the door 30 opening is equal to the angle when the first side edge W is located outside the reference plane M0 and its distance from the reference plane M0 is at its maximum. α is settable. W =G`=35°. The guide section with the above trajectory characteristics can limit the distance by which the first side edge W extends beyond the first body sidewall when the door body 30 rotates to a small range.

[0245] In some embodiments of this application, the center of the arc-shaped side edge trajectory line W0W5 formed by the door 30 opening from the closed state to G5 = 90° is denoted as the first side edge center O' (not shown in the figure); wherein, the first side edge center O' is located on the side of the first side edge trajectory line T closest to the second body sidewall; as an implementable method, the first side edge center O', the third center O3, and the position W0 of the first side edge W when the door 30 is closed are on the same straight line. The setting of the guide part with the above trajectory characteristics enhances the predictability of the movement trajectory of the first side edge W when the door 30 is opened, so that in the product design and manufacturing stage, the movement trajectory trend of the first side edge can be predicted by the structure of the guide part and the position of the first side edge when the door is closed or opened to 90°, so that the formed product meets the embedded requirements.

[0246] In some embodiments of this application, when the door 30 is opened to G4, the position of the first side edge W is denoted as W4; wherein, in the projection of the plane containing the top wall of the housing 10, the straight line W0W4 containing W0 and W4 is perpendicular to the plane containing the retrieval port. That is, during the opening process of the door 30, when the central axis of the second door hinge 52 moves to the fourth guide point Q4 where the distance between the fourth trajectory line S4 and the first body side wall is the largest, the first side edge W moves to a plane that passes through the first side edge W when the door 30 is closed and is perpendicular to the plane containing the retrieval port. In this embodiment, W0 is located on the reference plane M0 (the plane containing the first body side wall), so W4 is also located on the reference plane M0 (the plane containing the first body side wall).

[0247] In this embodiment, combined with Figures 13-15 , Figure 23 As shown, during the process of the door 30 opening from the closed state to G', the center point I of the axis moves inward rapidly, which effectively compensates for the outward displacement of the first side edge W caused by simple rotational motion, thereby limiting the distance of the first side edge W beyond the side wall of the first body to within 3mm.

[0248] 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, as the opening angle of the door 30 increases, the second side edge N first moves away from the first reference plane M1 and closer to the second reference plane M2, then moves away from the first reference plane M1 and the second reference plane M2, and then moves closer to the first reference plane M1 and away from the second reference plane M2. Among them, when the door 30 is opened to G2, the plane containing the second side edge N and the pick-up and put-away port is at its minimum. Combined with the setting that the distance ζ3 of the door 30 rotating and opening to the pick-up and put-away port (the displacement generated along the Y-axis direction) during the process of the door 30 opening from the closed state to G3 is not greater than 0.1mm, the interference between the door 30 and the box 10 is effectively avoided, and the door seal 20 is not excessively squeezed, which would prevent the door 30 from opening.

[0249] 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, in the projection on the top wall of the cabinet 10, as the opening angle of the door 30 increases, the side sealing edge F first moves away from the first reference plane M1 and closer to the second reference plane M2, then moves away from the first reference plane M1 and the second reference plane M2, and then moves closer to the first reference plane M1 and away from the second reference plane M2. This arrangement, with the side sealing edge F moving outwards in the later stage of the door 30 opening, avoids the door 30 excessively obstructing the access opening due to the side sealing edge F moving inwards in the early stage of the door 30 opening, thereby increasing the space utilization rate of the storage drawer in the lateral dimension of the storage room.

[0250] In this embodiment, when the door 30 is opened to G``, the distance between the side sealing edge F and the side wall of the first body is the largest; where G``∈[89°, 90°]; in this embodiment, the plane passing through the side sealing edge F when the door 30 is opened to G`` and parallel to the side wall of the first body is defined as the third reference plane M3. The third reference plane M3 will not move during the opening process of the door 30 relative to the box 10, and is a reference plane that remains stationary relative to the box 10.

[0251] Among them, the door 30 is opened to the maximum angle G. max During the process, the second side edge N is located on the side of the third reference plane M3 that is closer to the side wall of the first body; that is, the distance between the second side edge N and the third reference plane M3 is greater than 0.

[0252] As a configurable method, when the door 30 is opened to the maximum angle G max During the opening process, the door sealing edge F is located between the second side edge N and the third reference plane M3 (including on the third reference plane M3). That is, during the opening of the door 30, the second side edge N is always located outside the side sealing edge F. Specifically, as the door 30 moves from G'' towards the maximum angle G... max During the opening process, as the opening angle of the door 30 increases, the obstruction of the access opening by the door seal 20 and the door 30 gradually decreases. This design ensures that the door 30 installed inside the cabinet 100 can open to a greater angle (greater than 90°), facilitating the user's access to items stored on the door shelf. Furthermore, it reduces the lateral obstruction of the access opening by the door 30, thereby increasing the lateral dimensions of the drawers installed in the storage room and maximizing the space utilization of the storage room.

[0253] As one feasible method, the refrigerator is installed inside the cabinet 100, when the door 30 is opened to the maximum angle G. max At this time, the front wall 31 of the door contacts the cabinet 100. In some embodiments of this application, when the door 30 is opened to the maximum angle G... max At that time, within the projection of the plane containing the top wall of the box 10, the second side edge N is located on the side of the side sealing edge F that is far away from the third reference plane M3, and the angle between the side sealing edge F and the straight line FN containing the second side edge N and the third reference plane M3 is less than 20°.

[0254] As another possible configuration, in the projection of the plane containing the top wall of the housing 10, the straight line FN containing the side sealing edge F and the second side edge N is approximately parallel to the third reference plane M3; that is, when the door 30 is opened to the maximum angle G... maxAt this time, the angle between the straight line FN containing the side sealing edge F and the second side edge N and the third reference plane M3 is any value between 0° and 3°. This limitation effectively avoids increasing the lateral obstruction of the door body 30 to the loading / unloading opening due to the rotational movement of the second side edge N, ensuring that the door body 30 can open to the maximum angle G. max .

[0255] The angle between the plane containing the surface of the door seal 5 away from the door sidewall 31 and the sidewall of the first body is denoted as the second angle λ.

[0256] Door body 30 continues from 90° towards the maximum angle G max During the opening process, the second included angle λ tends to increase; and the side sealing edge F gradually moves away from the plane where the door seal 5 is away from the front wall 31 when the door body 30 is opened to 90°. That is, the door body 30 continues to move from 90° towards the maximum angle G. max During the opening process, the angle between the plane of the surface of the door seal 5 away from the door side wall 31 and the side wall of the first body increases monotonically, and the distance between the side sealing edge F and the plane of the surface of the door seal 5 away from the front wall 31 when the door body 30 is opened to 90° increases monotonically.

[0257] It should be noted that in this embodiment, during the process of the door 30 opening from the closed state to the fourth angle G4, the door 30 maintains an inward movement trend; thus, it can be seen that in some embodiments of this application, in order to make the door 30 move inward a certain distance when it is opened, any part of the process of the door 30 opening from the closed state to the fourth angle G4 can be selected as the starting stage.

[0258] Example 2

[0259] This embodiment is based on the same principle as Embodiment 1. The main difference between Embodiment 1, where the guide center axis Q is located on the side away from the first tangent point Q' (on the third trajectory line S3) when the door 30 is closed, is that the guide center axis Q is located on the side closer to the first tangent point Q' when the door 30 is closed. That is, the starting guide point Q0 is located on the side of the first tangent point Q' closer to the first tangent point Q', and is located on the second trajectory line S2.

[0260] like Figure 36 As shown, in this embodiment, 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 pick-up / placement opening, and is located on the side of the first tangent point Q' near the side wall of the first body; the above settings make fuller use of the second trajectory line S2 and the third trajectory line S3, so that the maximum angle that the door 30 can open can be effectively increased (compared to the form of embodiment one), making it convenient for users to pick up and place items.

[0261] Among them, the point on the second trajectory line S2 that is closest to the side wall of the first body is the eighth guide point P8; the seventh guide point P7 is located between the sixth guide point P6 and the eighth guide point P8, that is, the seventh guide point P7 is located on the arc P6P8; in addition, there is a ninth guide point P9 on the arc P8Q`, that is, the ninth guide point P9 is located between the eighth guide point P8 and the first tangent point Q`.

[0262] The following compares Example 1 with Example 2, specifically:

[0263] In the configuration of Embodiment 1, the straight line where P0Q0 is located is parallel to the side wall of the first body; during the opening of the door 30, when the guide center axis P moves to the seventh guide point P7 on the second trajectory line S2, the opening angle of the door 30 is recorded as G7;

[0264] As one configuration in this embodiment, 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 pick-and-place port; during the opening of the door 30, when the guide center axis P moves to the seventh guide point P7 on the second trajectory line S2, the opening angle of the door 30 is recorded as G`7; then, G7 < G`7; that is, in this embodiment, by adjusting the position of the first door hinge 51 and the second door hinge 52 relative to the guide trajectory line S when the door 30 is closed, the range of angles that the door 30 can open is effectively increased;

[0265] In this embodiment, when the door 30 is opened, the guide center axis Q first moves along the second trajectory line S2 in an arc with a radius of r2 away from the side wall of the first body and close to the pick-up and put-out opening to the first tangent point Q'. Then, it moves along the third trajectory line S3 in an arc with a radius of r3 away from the side wall of the first body and close to the pick-up and put-out opening to the second guide point Q2. Then, it moves along the third trajectory line S3 in an arc with a radius of r3 away from the side wall of the first body and the pick-up and put-out opening to the third guide point Q3. Then, it moves along the fourth trajectory line S4 in an arc with a radius of r4 away from the side wall of the first body and the pick-up and put-out opening to the fourth guide point Q4. Then, it moves along the fourth trajectory line S4 in an arc with a radius of r4 away from the side wall of the first body and the pick-up and put-out opening to the seventh guide point Q7.

[0266] As one configuration method in this embodiment, such as Figure 36 As shown, the door 30 is opened to its maximum angle G. max At that time, the guide center axis P moves to the point closest to the second trajectory line S2 and the side wall of the first body—the eighth guide point P8. Correspondingly, the guide center axis Q moves to the eighth guide point Q8; that is, the door 30 opens from G6 to G... max During the process, the guiding center axis P moves along the second trajectory line S2 in an arc with a radius of r2 towards the side wall of the first body and the pick-up / placement port, until it reaches the eighth guiding point P8 where the distance between the second trajectory line S2 and the side wall of the first body is minimized. As a configurable method, G...max =128°.

[0267] As one configuration method in this embodiment, such as Figure 37 As shown, the door 30 is opened to its maximum angle G. max At that time, the guide center axis P moves to the ninth guide point P9 on the second trajectory line S2; wherein, the ninth guide point P9 is located between the first guide point Q0 and the eighth guide point P8; that is, the door 30 is opened from G6 to G max During the process, the guiding center axis P moves along the second trajectory line S2 first in an arc with a radius of r2 towards the side wall of the first body and the pick-up / placement port to the eighth guiding point P8, and then moves in an arc with a radius of r2 away from the side wall of the first body and towards the pick-up / placement port to the ninth guiding point P9. As a configurable method, G... max =133°.

[0268] As another configuration method in this embodiment, such as Figure 38 As shown, the door 30 is opened to its maximum angle G. max At that time, the guide center axis P moves to the ninth guide point P9 on the second trajectory line S2; wherein, the ninth guide point P9 coincides with the first guide point Q0; that is, the door 30 is opened from G6 to G max During the process, the first door hinge 51 moves along the second trajectory line S2 in an arc with a radius of r2 towards the side wall of the first body and the pick-up / placement opening to the eighth guide point P8, and then moves in an arc with a radius of r2 away from the side wall of the first body and towards the pick-up / placement opening to the first guide point Q0. As a configurable method, G max =140°.

[0269] Combination Figures 36-38 As shown, the center point I first moves inward and backward, then inward and forward, then outward and forward, and finally outward and backward; in conjunction with the description of Embodiment 1, in this embodiment, the door 30 first moves inward and backward, then inward and forward, then outward and forward, and finally outward and backward.

[0270] The process of the first door hinge 51 and the second door hinge 52 moving at a specific angle relative to the guide trajectory line S is described in the same way as in Embodiment 1, and will not be repeated here.

[0271] Example 3

[0272] This embodiment is based on the same principle as Embodiment 1, except that when the door 30 is closed, the guide center axis Q is located at the first tangent point Q', that is, the starting guide point Q0 coincides with the first tangent point Q'. Similar to Embodiment 1, the first tangent point Q' is located on the side of the starting guide point P0 near the side wall of the first body and the pick-up / place-out opening. Therefore, 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 is located on the second trajectory line S2.

[0273] like Figure 39 As shown, in this embodiment, 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 pick-up / placement opening. This embodiment makes fuller use of the third trajectory line S3, effectively increasing the maximum opening angle of the door 30 (compared to the first embodiment), making it easier for users to pick up and place items.

[0274] When the door 30 is opened, the movement trend of the guide center axis Q is the same as in Embodiment 1, and will not be repeated here.

[0275] As one configuration method in this embodiment, such as Figure 39 As shown, the door 30 is opened to its maximum angle G. max At that time, the guide center axis P moves to the point closest to the second trajectory line S2 and the side wall of the first body—the eighth guide point P8; correspondingly, the guide center axis Q moves to the eighth guide point Q8; as a configurable mode, G max =123°.

[0276] As one configuration method in this embodiment, such as Figure 40 As shown, the door 30 is opened to its maximum angle G. max At that time, the guide center axis P moves to the ninth guide point P9 on the second trajectory line S2; wherein, the ninth guide point P9 is located between the first tangent point Q` (first guide point Q0) and the eighth guide point P8; that is, the door 30 is opened from G6 to G max During the process, the first door hinge 51 moves along the second trajectory line S2 in an arc with a radius of r2 towards the side wall of the first body and the pick-up / placement opening to the eighth guide point P8, and then moves in an arc with a radius of r2 away from the side wall of the first body and towards the pick-up / placement opening to the ninth guide point P9. As a configurable method, G max =131°.

[0277] Combination Figures 39-40 As shown, the center point I first moves inward and backward, then inward and forward, then outward and forward, and finally outward and backward; in conjunction with the description of Embodiment 1, in this embodiment, the door 30 first moves inward and backward, then inward and forward, then outward and forward, and finally outward and backward.

[0278] The process of the first door hinge 51 and the second door hinge 52 moving at a specific angle relative to the guide trajectory line S is described in the same way as in Embodiment 1, and will not be repeated here.

[0279] Example 4

[0280] This embodiment is based on the same principle as Embodiment 1, with the main difference being that the settings of the second trajectory line S2 and the third trajectory line S3 are different. Specifically, as follows... Figure 41As shown, in this embodiment, the straight line O2O3 containing the second center O2 and the third center O3 is parallel to the sidewall of the first body; that is, in this embodiment, the third trajectory line S3 extends along an arc with a radius of r3 in a direction away from the sidewall of the first body and the pick-up / place-out port. In other words, O2, O3, and Q' are on the same straight line, and this straight line is parallel to the sidewall of the first body.

[0281] As one configurable method in this embodiment, similar to Embodiment 1, the second guide point Q2 is the tangent point connecting the third trajectory line S3 and the fourth trajectory line S4;

[0282] In conjunction with the settings in Embodiment 1, one setting method in this embodiment is that the starting guide point P0 is on the straight line O2O3.

[0283] In this embodiment, when the door 30 is closed, the guide center axis Q is located at the first tangent point Q', that is, the starting guide point Q0 coincides with the first tangent point Q'. When the door 30 is open, the guide center axis Q first moves along the third trajectory line S3 in an arc with a radius of r3 away from the side wall of the first body and the pick-up / placement opening to the second guide point Q2. Then, along the fourth trajectory line S4, it first moves along an arc with a radius of r4 away from the side wall of the first body and the pick-up / placement opening to the fourth guide point Q4. Finally, it moves along an arc with a radius of r4 towards the side wall of the first body and away from the pick-up / placement opening to the eighth guide point Q8.

[0284] Since the first tangent point Q' and the initial guide point P0 lie on the straight line O2O3 parallel to the side wall of the first body, it can be seen that the initial guide points Q0, P0, O2, and O3 are on the same straight line. That is, the same as the setting in Embodiment 1, in the plane where the top wall of the box 10 is located, when the door 30 is closed, the straight line containing the guide center axis P and the guide center axis Q is parallel to the side wall of the first body.

[0285] As an feasible approach, such as Figure 41 As shown, the door 30 is opened to its maximum angle G. max At this time, the guide center axis P moves to the eighth guide point P8, which is closest to the second trajectory line S2 and the side wall of the first body; at this time, the guide center axis Q is located at the end point Q8 of the fourth trajectory line S4, away from the pick-up and drop-off port; as a configurable mode, G max =103°.

[0286] In this embodiment, the door 30 is opened from G6 to G... max During the process, the first door hinge 51 moves along the second trajectory line S2 in the direction close to the side wall of the first body and the pick-up and drop-off port to the eighth guide point P8.

[0287] As one possible configuration in this embodiment, the second guide point Q2 is located on the side of the first body sidewall near the tangent point where the third trajectory line S3 and the fourth trajectory line S4 connect.

[0288] The process of the first door hinge 51 and the second door hinge 52 moving at a specific angle relative to the guide trajectory line S is explained in the same way as in the embodiment, and will not be repeated here. It should be noted that in this embodiment, as Figure 41 As shown, when the door 30 is opened to the first angle G1, the guide center axis P moves to the first guide point P1, and the guide center axis Q moves to the first guide point Q1. In this embodiment, the first guide point Q1 is not the point where the distance between the third guide trajectory line S3 and the pick-up / placement opening is the smallest in Embodiment 1; in this embodiment, it only represents an intermediate state in which the guide center axis Q moves along the third trajectory line S3 from the first tangent point Q' to the second guide point Q2 when the door 30 is open. In this embodiment, when the door 30 is in the closed state, it corresponds to the state when the door 30 is opened to G1 in Embodiment 1, and the guide center axis Q is located at the position where the distance between the third trajectory line S3 and the pick-up / placement opening is the smallest.

[0289] Example 5

[0290] This embodiment is based on the same principle as Embodiment 5. The straight line O2O3 containing the second center O2 and the third center O3 is parallel to the side wall of the first body. That is, in this embodiment, the third trajectory line S3 extends along an arc with a radius of r3 in a direction away from the side wall of the first body and the pick-up / place-out port. In other words, O2, O3, and Q` are on the same straight line, and this straight line is parallel to the side wall of the first body.

[0291] In this embodiment, P0 is also on the straight line O2O3. Similar to Embodiment 1, the second guide point Q2 is the tangent point connecting the third trajectory line S3 and the fourth trajectory line S4.

[0292] The difference between this embodiment and Embodiment 5 is that, as Figure 42 As shown, when the door 30 is closed, the guide center axis Q is located at the first tangent point Q` on the side close to the first body sidewall; that is, the starting guide point Q0 is located on the second trajectory line S2; Q0 is located on the side of P0 close to the first body sidewall and the pick-up / place-out port.

[0293] When the door 30 is opened, the guide center axis Q first moves along the second trajectory line S2 away from the side wall of the first body and close to the pick-up and put-out port to the first tangent point Q', then moves along the third trajectory line S3 away from the side wall of the first body and the pick-up and put-out port to the second guide point Q2, and then moves along the fourth trajectory line S4 away from the side wall of the first body and the pick-up and put-out port, and then moves close to the side wall of the first body and away from the pick-up and put-out port.

[0294] Among them, the eighth guide point P8 is the point on the second trajectory line S2 with the smallest distance from the side wall of the first body; the seventh guide point P7 is located between the sixth guide point P6 and the eighth guide point P8, that is, P7 is located on the arc P6P8 with radius r2;

[0295] As an feasible approach, such as Figure 42As shown, the door 30 is opened to its maximum angle G. max At this time, the guide center axis P moves to the eighth guide point P8, which is closest to the second trajectory line S2 and the side wall of the first body; at this time, the guide center axis Q is located at the end point Q8 of the fourth trajectory line S4, away from the pick-up and drop-off port; as a configurable mode, G max =106°.

[0296] That is, door 30 is opened from G6 to G max During the process, the first door hinge 51 moves along the second trajectory line S2 in the direction close to the side wall of the first body and the pick-up and drop-off port to the eighth guide point P8.

[0297] As one possible configuration in this embodiment, the second guide point Q2 is located on the side of the first body sidewall near the tangent point where the third trajectory line S3 and the fourth trajectory line S4 connect.

[0298] As one possible configuration in this embodiment, the second guide point Q2 is located on the side of the first body sidewall near the tangent point where the third trajectory line S3 and the fourth trajectory line S4 connect.

[0299] The process of the first door hinge 51 and the second door hinge 52 moving at a specific angle relative to the guide trajectory line S is explained in the same way as in Embodiment 4, and will not be repeated here. Similar to Embodiment 4, it should be noted that in this embodiment, as... Figure 42 As shown, when the door 30 is opened to the first angle G1, the guide center axis P moves to the first guide point P1, and the guide center axis Q moves to the first guide point Q1. In this embodiment, the first guide point Q1 is not the point where the distance between the third guide trajectory line S3 and the pick-up / placement opening is the smallest in Embodiment 1; in this embodiment, it only represents an intermediate state in which the guide center axis Q moves along the third trajectory line S3 from the first tangent point Q' to the second guide point Q2 when the door 30 is open. In this embodiment, the state when the guide center axis Q moves to the first tangent point Q' during the opening process of the door 30 corresponds to the state when the door 30 is opened to G1 in Embodiment 1, and the guide center axis Q is located at the position where the distance between the third trajectory line S3 and the pick-up / placement opening is the smallest.

[0300] Example 6

[0301] like Figures 43-45 As shown, in some embodiments of this application, the extension 402 of the hinge plate 40 is fixed with a track block 70, and a guide portion 60 is formed on the track block 70.

[0302] Specific reference Figures 43-45In this embodiment, the track block 70, which is set on the hinge plate 40 corresponding to the lower end of the door body 30, is used as an example for explanation. Specifically, the track block 70 has a groove bottom 74, a groove opening 73 opposite to the groove bottom 74, a circumferential groove wall 72 surrounding the groove bottom 74, and an annular plate 71 located at one end of the groove opening 73 and surrounding the circumferential groove wall 72.

[0303] A mounting hole 43 is formed on the extension 402 of the hinge; the track block 70 is installed in the mounting hole 43, and the circumferential groove wall 72 is engaged with the hole wall of the mounting hole, and the ring plate 71 is engaged with the extension 402; as an option, the track block 70 is interference-fitted with the mounting hole 43.

[0304] In this embodiment, the guide part is a through groove formed by multiple tangent and sequentially connected arc grooves. The hole wall of the mounting hole 43 that cooperates with it is also formed by multiple tangent arc grooves, which makes it easier to process and effectively ensures the processing accuracy of the mounting hole 43.

[0305] The track block 70 is made of plastic, which is self-lubricating and wear-resistant, effectively ensuring smooth movement of the first door hinge 41 relative to the guide and the second door hinge 42 relative to the guide when the door 30 is opened. Alternatively, the track block 70 can be made of POM material, which has strong abrasion resistance and can improve its service life.

[0306] 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.

[0307] 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 door is attached to the housing to open or close the loading / unloading port; The first door hinge and the second door hinge are located at the end of the door body near the side wall of the first body, and connect the door body to the box body; A hinge is provided on the housing and is located near the first door hinge and the second door hinge; A guide portion is provided on the hinge; the first door hinge and the second door hinge cooperate with the guide portion to drive the door to open or close the loading and unloading port; The guide portion has a guide trajectory line, which includes a first trajectory line, a second trajectory line, a third trajectory line, and a fourth trajectory line that are arc-shaped and connected tangentially in sequence. During the process of the door opening from the second angle G2 to the fourth angle G4, the guide part guides the first door hinge to move, and causes the central axis of the first door hinge to move in an arc with a radius of r1 along the first trajectory line toward the side wall of the first body and the pick-up and put-out opening. The guide portion guides the movement of the second door hinge, and causes the central axis of the second door hinge to move in an arc with a radius of r4 along the fourth trajectory line in a direction away from the side wall of the first body and the pick-up / placement opening; the first door hinge and the second door hinge drive the door body to rotate and open the pick-up / placement opening, and cause the door body to move a certain distance closer to the side wall of the second body.

2. The refrigerator according to claim 1, characterized in that, During the process of the door opening from the closed state to the second angle G2, the guide part guides the movement of the second door hinge, and causes the central axis of the second door hinge to move in an arc with a radius of r3 along the third trajectory line in a direction away from the side wall of the first body and close to the pick-up and put-out port, and then move in an arc with a radius of r3 along the third trajectory line in a direction away from the side wall of the first body and the pick-up and put-out port.

3. The refrigerator according to claim 2, characterized in that, During the process of the door opening from the closed state to the second angle G2, the guide part guides the movement of the second door hinge, and causes the central axis of the second door hinge to first move along the second trajectory line in an arc with a radius of r2 in the direction away from the side wall of the first body and close to the pick-up and put-out opening, then move along the third trajectory line in an arc with a radius of r3 in the direction away from the side wall of the first body and close to the pick-up and put-out opening, and then move along the third trajectory line in an arc with a radius of r3 in the direction away from the side wall of the first body and the pick-up and put-out opening.

4. The refrigerator according to claim 2, characterized in that, During the process of the door opening from the closed state to the second angle G2, the guide part guides the movement of the second door hinge, and causes the central axis of the second door hinge to first move along the second trajectory line in an arc with a radius of r2 in the direction away from the side wall of the first body and close to the pick-up and put-out port, and then move along the third trajectory line in an arc with a radius of r3 in the direction away from the side wall of the first body and the pick-up and put-out port.

5. 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; 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. In the projection of the plane containing the top wall of the enclosure, the door is opened to its maximum angle G. max During the process, 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.

6. The refrigerator according to claim 5, characterized in that, Within the plane of the top wall of the enclosure, when the door is closed, the first side edge is located at W0; when the door is opened to 90°, the first side edge is located at W5. The door is opened from the closed state to 90°, and the side edge trajectory line W0W5 formed by the first side edge is an arc, 0° < G2 < G4 < 90°.

7. The refrigerator according to claim 6, characterized in that, The point at which the fourth trajectory line is furthest from the side wall of the first body is denoted as the fourth guide point Q4; when the door is opened to the fourth angle G4, the central axis of the second door hinge moves to the fourth guide point Q4 of the fourth trajectory line, and the first side edge is located at W4; In the projection of the plane containing the top wall of the box, the straight line W0W4 containing W0 and W4 is perpendicular to the plane containing the loading and unloading port.

8. The refrigerator according to claim 5 or 6, characterized in that, The central angle corresponding to the arc-shaped side edge trajectory line W0W5 formed by the door opening from the closed state to 90° is denoted as α. W When the first side edge is located between the first body sidewall and the first reference plane M1, and its distance from the first body sidewall is at its maximum, the door opening angle is G`; where α W =G`.

9. The refrigerator according to claim 5 or 6, characterized in that, The center of the arc-shaped side edge trajectory line W0W5 formed when the door is opened from the closed state to 90° is denoted as the first side edge center O`; wherein, the first side edge center O` is located on the side of the side edge trajectory line W0W5 closer to the second body sidewall. The center of the arc-shaped third trajectory line is denoted as the third center O3, and the third center O3 is located on the side of the third trajectory line away from the pick-up and put-out port; Wherein, the center O' of the first side edge, the center O3 of the third side edge, and the position W0 of the first side edge when the door is closed are on the same straight line.

10. The refrigerator according to claim 5 or 6, characterized in that, The door is opened to its maximum angle G. max During the process, when the first side edge is located on the side of the first body sidewall close to the first reference plane M1, the maximum distance between the first side edge and the first body sidewall is any value less than 3mm.

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