Refrigerator door body height adjusting device based on orbital transfer hinge

Abstract

The invention provides a refrigerator door height adjusting device based on an orbital transfer hinge, and relates to the technical field of refrigerator hinges, the refrigerator door height adjusting device comprises a hinge, a guide plate, a first gasket and a second gasket, and the first gasket is rotatably connected with a first hinge shaft; the second gasket is in sliding connection with the first hinge shaft and the second hinge shaft; adjusting parts are arranged on the opposite faces of the first gasket and the second gasket respectively, and when the first gasket rotates to the adjusting parts to be matched with each other, a first distance is formed between the first gasket and the second gasket; and when the first gasket rotates to the adjusting part and is not matched with the adjusting part, a second distance is formed between the first gasket and the second gasket. The height of the door body can be adjusted only through rotation of the first gasket, compared with an existing gasket dismounting and mounting mode, adjustment is faster and more effective, meanwhile, the gasket used for adjusting the height serves as a fixing assembly of the hinge and can be pre-installed in the hinge assembly in the refrigerator manufacturing process, and the assembly is more convenient. Various problems caused by the fact that an operator needs to additionally install a gasket in the prior art are avoided.

Description

Technical Field

[0001] This application relates to the field of refrigerator hinge technology, and in particular to a refrigerator door height adjustment device based on a variable track hinge. Background Technology

[0002] With the increasing demand for integrated home furnishings, refrigerators often need to be embedded in cabinets and designed to blend seamlessly with them. To ensure a "seamless fit" between the refrigerator and the cabinet, the distance between the side of the refrigerator body and the side panel of the cabinet is often reduced to 2mm or even less. For built-in refrigerators, the hinges used for rotating the refrigerator door need to adopt a variable track design, which generally has two axes.

[0003] In the aforementioned refrigerator manufacturing process, due to limitations in manufacturing precision, refrigerator doors with left and right opening mechanisms often exhibit uneven heights. To achieve equal height for the left and right doors, shims can be used for adjustment. For example, patent document CN220014851U discloses a refrigerator door hinge assembly that adjusts the height of the refrigerator door by installing shims between a movable hinge plate and a pad, ensuring that the left and right doors are at the same height.

[0004] However, existing technologies have a series of problems in practical applications. For example, the gaskets in existing solutions are used as adjustment accessories and are separated from the door hinge assembly when not in use. This can easily lead to inconvenience when adjusting the door due to loss by the operator. In addition, the detachable design of the gaskets can easily come off during the rotation of the refrigerator door, increasing unnecessary operations for the user and affecting the user experience. Summary of the Invention

[0005] This application provides a refrigerator door height adjustment device based on a variable-track hinge to solve the problems of easy detachment of the gasket and inconvenient operation in the prior art.

[0006] In a first aspect, embodiments of this application provide a refrigerator door height adjustment device based on a variable-track hinge, comprising:

[0007] A hinge connected to the housing; a first hinge axis and a second hinge axis are spaced apart on the hinge; the ends of the first hinge axis and the second hinge axis away from the hinge are slidably connected to a guide plate disposed on the door body;

[0008] A first washer is disposed between the guide plate and the hinge; one side of the first washer is rotatably connected to the first hinge shaft;

[0009] A second washer is respectively sleeved on the outside of the first hinge shaft and the second hinge shaft, and slidably connected to the first hinge shaft and the second hinge shaft; the second washer is disposed between the guide plate and the first washer;

[0010] The first pad has a first adjustment portion on the side facing the second pad; the second pad has a second adjustment portion on the side facing the first pad for adapting to the shape of the first adjustment portion; when the first pad rotates along the first hinge axis to a first position, there is a first distance between the opposing surfaces of the first pad and the second pad; the first position is the position of the first pad when the first adjustment portion and the second adjustment portion are engaged; when the first pad rotates along the first hinge axis to a second position, there is a second distance between the opposing surfaces of the first pad and the second pad, the second distance being greater than the first distance.

[0011] In some embodiments, the second adjusting part is a slider; the first adjusting part is a groove that accommodates at least a portion of the slider.

[0012] In some embodiments, the groove has a first inclined surface on one side along the rotation direction of the first pad; and the slider has a second inclined surface on one side that matches the shape of the first inclined surface.

[0013] In some embodiments, the first pad has a first shaft hole on the side away from the first hinge axis that matches the second hinge axis; the first shaft hole is a semi-circular through hole.

[0014] In some embodiments, the second pad has a first boss on the side facing the first pad; a first through hole is formed at the center of the first boss; and the second hinge shaft passes through the first through hole.

[0015] In some embodiments, the outer edge of the first boss is provided with a third inclined surface; the inner edge of the first shaft hole is provided with a fourth inclined surface that matches the shape of the third inclined surface.

[0016] In some embodiments, a second boss is provided on one side of the first gasket; a second through hole is provided at the center of the second boss; and the first hinge shaft passes through the second through hole.

[0017] In some embodiments, the grooves are provided in multiples, and the multiple grooves are arranged at circumferential intervals along the first hinge axis; the multiple grooves have progressively increasing depths along the rotation direction of the first gasket.

[0018] In some embodiments, when the slider is located in the first groove, the surfaces of the first pad and the second pad are in contact; the first groove is the deepest of the plurality of grooves.

[0019] In some embodiments, the guide plate includes a first track groove and a second track groove; the first hinge shaft slides along the first track groove; and the second hinge shaft slides along the second track groove.

[0020] The refrigerator door height adjustment device provided in this application embodiment has a simple structure. It can adjust the position of two hinge shafts simultaneously using only one shim, ensuring smooth and reliable door operation. At the same time, the shim used for height adjustment is a fixed component of the hinge and can be pre-installed in the hinge assembly during the refrigerator manufacturing process, avoiding the various problems caused by the need for operators to install additional shims in traditional technologies.

[0021] In the refrigerator door height adjustment device provided in this application embodiment, the door height can be adjusted by rotating the first shim alone. Compared with the existing method of removing and installing shims, the adjustment is faster and more effective. Furthermore, during normal use of the refrigerator door, since the door does not directly contact the first shim, the first shim will not become displaced or fall off due to the movement of the door, resulting in high reliability. Attached Figure Description

[0022] Figure 1 An application scenario diagram of the refrigerator door height adjustment device based on a variable-track hinge provided in this application embodiment;

[0023] Figure 2 This is a schematic diagram of a refrigerator door with a height difference in the prior art.

[0024] Figure 3 An exploded view of a refrigerator door height adjustment device based on a variable-track hinge, provided in an embodiment of this application.

[0025] Figure 4 A schematic diagram of the first shim in the first position of the refrigerator door height adjustment device based on the variable track hinge provided in the embodiment of this application;

[0026] Figure 5 for Figure 4 Another perspective view;

[0027] Figure 6 A schematic diagram of the first shim in the second position of the refrigerator door height adjustment device based on the variable track hinge provided in the embodiment of this application;

[0028] Figure 7 A schematic diagram of the structure of the first shim in the refrigerator door height adjustment device based on the variable track hinge provided in the embodiments of this application;

[0029] Figure 8 A schematic diagram of the disassembled state of the second gasket in the refrigerator door height adjustment device based on the variable track hinge provided in the embodiments of this application;

[0030] Figure 9 A schematic diagram of the structure of the second shim in the refrigerator door height adjustment device based on the variable track hinge provided in the embodiments of this application;

[0031] Figure 10Another structural schematic diagram of the first shim in the refrigerator door height adjustment device based on the variable track hinge provided in the embodiments of this application;

[0032] Figure 11 This is a schematic diagram of the guide plate in the refrigerator door height adjustment device based on a variable-track hinge provided in an embodiment of this application.

[0033] Wherein, 1-box body; 2-first door body; 3-second door body; 4-hinge; 5-first gasket; 6-second gasket; 7-guide plate;

[0034] 41-First hinge shaft; 42-Second hinge shaft; 51-First shaft hole; 52-Second through hole; 53-Second boss; 54-Fourth inclined surface; 61-First through hole; 62-Second shaft hole; 63-Slider; 64-First boss; 71-First track groove; 72-Second track groove;

[0035] 531 - Groove; 532 - First inclined surface; 631 - Second inclined surface; 641 - Third inclined surface;

[0036] 5311 - First groove; 5312 - Second groove; 5313 - Third groove. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.

[0038] See Figure 1 This is an application scenario diagram of the refrigerator door height adjustment device based on the variable track hinge provided in the embodiments of this application;

[0039] See Figure 2 This is a schematic diagram of a refrigerator door with a height difference in the prior art;

[0040] Depend on Figure 1 and Figure 2 It is understood that the refrigerator door height adjustment device provided in this application is mainly used in refrigerators with double doors on the left and right sides. The refrigerator may include a cabinet 1, a first door 2, and a second door 3. The first door 2 and the second door 3 are rotatably connected to the cabinet through hinges 4.

[0041] During the refrigerator manufacturing process, various reasons may cause a height difference between two oppositely positioned doors (first door 2 and second door 3). Figure 3 As shown, after the doors are installed, the top of the first door 2 may be higher than the top of the second door 3 by a distance of L units. In this case, the door height needs to be fine-tuned to ensure the two doors are at the same height. Therefore, this application provides a refrigerator door height adjustment device based on a variable-track hinge.

[0042] It should be noted that the refrigerator proposed in this application embodiment can be a design that matches and integrates with the cabinet. In order to ensure that the opening and closing of the door is not affected, the hinge 4 is usually set as a variable track hinge. Compared with the traditional hinge, the variable track hinge, through a special structural design, allows the door connected to it to change its direction of movement, path or switch to different tracks during movement, thereby meeting the needs of complex movement scenarios.

[0043] See Figure 3 , is an exploded view of the refrigerator door height adjustment device based on a variable-track hinge provided in the embodiments of this application;

[0044] Depend on Figure 3 As can be seen, in some embodiments, the refrigerator door height adjustment device based on a variable-track hinge provided in this application may include:

[0045] A hinge 4 is connected to the housing 1. The hinge 4 may be provided with several fixing holes, and the hinge 4 is fixed to the housing 1 by fasteners such as bolts passing through the fixing holes. In some embodiments, the hinge 4 may include a vertical plate surface for fixing the housing 1 and a horizontal plate surface for setting the hinge axis. The specific shape of the plate surface constituting the hinge 4 is not limited in this application.

[0046] See Figure 4 This is a schematic diagram of the first shim in the first position of the refrigerator door height adjustment device based on a variable-track hinge provided in this application embodiment; see also Figure 5 ,for Figure 4 Another perspective view;

[0047] Depend on Figure 4 and Figure 5 As can be seen in this embodiment, the hinge 4 is provided with a first hinge axis 41 and a second hinge axis 42 spaced apart; the first hinge axis 41 and the second hinge axis 42 respectively provide different movement trajectories for the door body. When the door body (with...) Figure 3 Taking the second door body 3 as an example, when it is connected to the hinge 4, a guide plate 7 can be set at the bottom of the second door body 3. The ends of the first hinge shaft 41 and the second hinge shaft 42 away from the hinge 4 are slidably connected to different tracks set with the guide plate 7, so that the door body can rotate along different movement trajectories.

[0048] To adjust the height of the door, see [link / reference]. Figures 3 to 5The refrigerator door height adjustment device provided in this application embodiment also includes a first shim 5 and a second shim 6. In this application embodiment, the height adjustment effect is achieved by the shape design of the first shim 5 and the second shim 6 and the change of their relative positions. Specifically, the first shim 5 and the second shim 6 are arranged sequentially along the direction from the hinge 4 to the guide plate 7. One side of the first shim 5 is rotatably connected to the first hinge shaft 41 and can rotate with the first hinge shaft 41 as the rotation axis. The other side of the first shim 5 is a free end, and the operator can rotate the first shim 5 clockwise or counterclockwise by using tools or manually operating the free end.

[0049] The second washer 6 is located above the first washer 5 and is respectively sleeved on the outside of the first hinge shaft 41 and the second hinge shaft 42, and is slidably connected to the first hinge shaft 41 and the second hinge shaft 42. The second washer 6 can slide along the axial direction of the first hinge shaft 41 and the second hinge shaft 42.

[0050] During the refrigerator manufacturing process, when the device in this embodiment is assembled, the bottom of the first pad 5 abuts against the top of the hinge 4 (horizontal plate), the bottom of the second pad 6 abuts against the top of the first pad 5, and the top of the second pad 6 abuts against the door or the guide plate 7 provided inside the door. At this time, if the second pad 6 slides along the axial direction of the first hinge shaft 41 and the second hinge shaft 42, the door can be moved up or down, thereby adjusting the height of the door.

[0051] See Figure 6 This is a schematic diagram of the first shim in the second position of the refrigerator door height adjustment device based on the variable track hinge provided in the embodiment of this application.

[0052] To achieve the movement of the second washer 6 along the hinge axis, see [link to relevant documentation]. Figures 4 to 6 In this embodiment of the application, the first pad 5 is provided with a first adjustment portion on the side facing the second pad 6; the second pad 6 is provided with a second adjustment portion on the side facing the first pad 5 for adapting to the shape of the first adjustment portion;

[0053] The first adjusting part and the second adjusting part are two complementary structures in shape, for example, Figure 5 and Figure 6 In the illustrated embodiment, the first adjusting part has a groove-shaped structure, and correspondingly, the second adjusting part can be a protruding structure corresponding to the groove-shaped structure. It should be noted that in the subsequent embodiments of this application, the first adjusting part is a groove-shaped structure and the second adjusting part is a protruding structure for illustrative purposes. It should be understood that the shapes of the first adjusting part and the second adjusting part can be interchanged, that is, the first adjusting part can be a protruding structure, while the second adjusting part can be a groove-shaped structure.

[0054] See also Figures 4 to 6 Since the opposing surfaces of the first gasket 5 and the second gasket 6 are respectively provided with a first adjusting part and a second adjusting part, as the first gasket 5 rotates, there are a first position where the first adjusting part and the second adjusting part can cooperate with each other, and a second position where they do not cooperate with each other. When the first adjusting part and the second adjusting part cooperate, the gap between the first gasket 5 and the second gasket 6 can be reduced. At this time, the gap between the first gasket 5 and the second gasket 6 is smaller (e.g., Figure 5 As shown, the spacing can be 0, at which point the first shim 5 and the second shim 6 are completely fitted together. When the first adjustment part and the second adjustment part do not form a fit, there is a certain gap between the first shim 5 and the second shim 6. At this time, the second shim 6 is equivalent to moving up a certain height along the hinge axis. Therefore, in this embodiment, the relative position between the first adjustment part and the second adjustment part can be adjusted by rotating the first shim 5, thereby changing the height of the second shim 6 and thus achieving the purpose of adjusting the height of the door.

[0055] See Figure 7 This is a schematic diagram of the structure of the first shim in the refrigerator door height adjustment device based on the variable track hinge provided in the embodiment of this application;

[0056] In some feasible embodiments, such as Figure 7 As shown, a second protrusion 53 is provided on one side of the first pad 5; a second through hole 52 is provided at the center of the second protrusion 53; the first hinge shaft 41 passes through the second through hole 52. The provision of the second protrusion 53 can increase the strength of the first pad 5 and ensure the stability of the first pad 5 when rotating along the first hinge shaft 41.

[0057] See Figure 8 This is a schematic diagram of the disassembled state of the second gasket in the refrigerator door height adjustment device based on the variable track hinge provided in the embodiment of this application.

[0058] In some feasible embodiments, such as Figure 7 As shown, the first washer 5 has a first shaft hole 51 on the side away from the first hinge shaft 41 that matches the second hinge shaft 42; the first shaft hole 51 is a semi-circular through hole. When the first washer 5 rotates to a certain angle, the first shaft hole 51 will coincide with the position of the second hinge shaft 42 (e.g., Figure 8 This causes the projections of the first gasket 5 and the second gasket 6 in the vertical direction to coincide. At this time, the first shaft hole 51 and the second gasket 6 are in contact and the force can be evenly distributed, improving the stability of the connection between the first gasket 5 and the second gasket 6.

[0059] See Figure 9This is a schematic diagram of the structure of the second shim in the refrigerator door height adjustment device based on the variable track hinge provided in the embodiment of this application;

[0060] In some feasible embodiments, such as Figure 9 As shown, the second washer 6 has a first protrusion 64 on the side facing the first washer 5; a first through hole 61 is formed at the center of the first protrusion 64; the second hinge shaft 42 passes through the first through hole 61; a second shaft hole 62 is formed on the side of the second washer 6 away from the second hinge shaft 42, through which the first hinge shaft 41 passes. In this embodiment, the first protrusion 64 is used to cooperate with the first shaft hole 51 in the first washer 5. When the first washer 5 rotates until the first shaft hole 51 contacts the first protrusion 64 of the second washer 6, the shapes of the two are matched, which can evenly distribute the force between the first washer 5 and the second washer 6 and prevent the washer from deforming under force.

[0061] In some feasible embodiments, such as Figure 7 and Figure 9 As shown, the second adjustment part can specifically be a slider 63 protruding from its surface; correspondingly, the first adjustment part can be a groove 531 that accommodates at least part of the slider 63.

[0062] It should be noted that, in the embodiments of this application, the specific shapes of the slider 63 and the groove 531 are not limited to a variety of types. For example, they can be trapezoidal blocks, triangular blocks, elliptical blocks or semi-circular blocks, as well as grooves of corresponding shapes.

[0063] In addition, when the slider 63 and the groove 531 are engaged, there are several possible situations. For example, when the volume of the groove 531 is greater than or exactly equal to that of the slider 63, the slider 63 is completely located inside the groove 531 when they are engaged. In this case, it can be considered that there is no gap between the first gasket 5 and the second gasket 6 and they are completely fitted together. Another example is when the volume of the groove 531 is smaller than that of the slider 63. The groove 531 can partially fit with the slider 63 (for example, it can completely fit with the end shape of the slider 63, but the root of the slider 63 is located outside the groove 531). In this case, it can be considered that there is a certain gap between the first gasket 5 and the second gasket 6, but it is still considered to be engaged.

[0064] Further, see Figure 7 and Figure 9 To facilitate a smoother transition between the first and second positions during the rotation of the first pad 5, in some feasible embodiments, the groove 531 has a first inclined surface 532 on one side along the rotation direction of the first pad 5; and the slider 63 has a second inclined surface 631 on one side that matches the shape of the first inclined surface 532. Providing inclined surfaces for transition reduces the driving force for the rotation of the first pad 5 and facilitates height adjustment.

[0065] For further details, please refer to [link / reference]. Figure 7 and Figure 9 In some feasible embodiments, the outer edge of the first boss 64 is provided with a third inclined surface 641; the inner edge of the first shaft hole 51 is provided with a fourth inclined surface 54 that matches the shape of the third inclined surface 641. The arrangement of the third inclined surface 641 and the fourth inclined surface 54 facilitates the docking operation between the first gasket 5 and the second gasket 6, and ensures the overall stability when the first gasket 5 and the second gasket 6 are connected.

[0066] See Figure 10 This is a schematic diagram of another structure of the first pad in the refrigerator door height adjustment device based on the variable track hinge provided in the embodiment of this application;

[0067] Furthermore, since the range of adjustable door height is determined by the height difference generated by the relative movement of the first and second adjusting parts, that is, the upward movement distance of the second shim 6 depends on the distance difference between the first shim 5 and the second shim 6 when the first shim 5 is in the first and second positions respectively, in order to improve the adjustable range of door height, in Figure 10 In the illustrated embodiment, multiple grooves 531 can be provided on the first pad 5, such as a first groove 5311, a second groove 5312, and a third groove 5313. The first groove 5311 has the greatest depth, and the third groove 5313 has the smallest depth. The multiple grooves 531 can be arranged at intervals along the circumference of the first hinge axis 41, or they can be arranged continuously. The depth of the first groove 5311 can be designed to be equal to the height of the slider 63, that is, it can completely accommodate the slider 63.

[0068] During use, the first groove 5311 is positioned at the end of the first pad 5 that is closest to the slider 63 when rotated. Before the first pad 5 needs to be rotated for adjustment, the first groove 5311 can engage with the slider 63. At this time, when the slider 63 is completely located within the first groove 5311, the opposing surfaces of the first pad 5 and the second pad 6 are in contact. When the door height needs to be adjusted, the first pad 5 can be rotated to move the slider 63 from the first groove 5311 to the second groove 5312. At this time, the height of the door raised is equal to the value of the first groove 5311. 1. The depth difference between the first groove 5311 and the second groove 5312; if the door is still not aligned at this time, the first shim 5 can be rotated to move the slider 63 from the second groove 5312 to the third groove 5313. At this time, the total height of the door is raised by the depth difference between the first groove 5311 and the third groove 5313. Similarly, if the door is still not aligned at this time, the first shim 5 can be rotated again to move the slider 63 from the third groove 5313 to the top surface of the second boss 53. At this time, the total height of the door is raised by the depth value of the first groove 5311.

[0069] In this embodiment of the application, by setting grooves 531 of different depths, a variety of different height adjustment ranges can be provided, making the device adaptable to more application scenarios and more flexible in adjustment.

[0070] See Figure 11 This is a schematic diagram of the guide plate in the refrigerator door height adjustment device based on variable track hinge provided in the embodiment of this application;

[0071] In some feasible embodiments, such as Figure 11 The guide plate 7 includes a first track groove 71 and a second track groove 72; wherein the second track groove 72 is disposed inside the first track groove 71, the first hinge shaft 41 slides along the first track groove 71; the second hinge shaft 42 slides along the second track groove 72, thereby realizing different movement trajectories of the door body.

[0072] As can be seen from the above technical solution, in the refrigerator door height adjustment device provided in this application, the first shim 5, which can rotate around the first hinge axis 41, and the second shim 6, which can move along the first hinge axis 41 and the second hinge axis 42, can cooperate with the second adjustment part (e.g., slider 63) provided on the second shim 6 and the first adjustment part (e.g., groove 531) provided on the first shim 5 when the refrigerator door does not need to be adjusted in height, so that the second adjustment part (e.g., slider 63) provided on the second shim 6 and the first adjustment part (e.g., groove 531) provided on the first shim 5 can be engaged to maintain a stable connection between the two. When the refrigerator door needs to be adjusted in height, the first shim 5 can be rotated to make the groove 531 of the first shim 5 and the second shim 6 move relative to each other, thereby changing the relative positional relationship between the groove 531 and the slider 63. During the rotation, the slider 63 slides relative to the inclined surface of the groove 531 to other grooves 531 or the top surface of the second boss 53. Due to the relative displacement of the slider 63, the position of the second shim 6 in the height direction is changed, thereby achieving the purpose of adjusting the refrigerator door.

[0073] The refrigerator door height adjustment device provided in this application embodiment has a simple structure. It can adjust the position of two hinge shafts simultaneously using only one shim, ensuring smooth and reliable door operation. At the same time, the shim used for height adjustment is a fixed component of the hinge and can be pre-installed in the hinge assembly during the refrigerator manufacturing process, avoiding the various problems caused by the need for operators to install additional shims in traditional technologies.

[0074] In the refrigerator door height adjustment device provided in this application embodiment, the door height can be adjusted by rotating the first shim alone. Compared with the existing method of removing and installing shims, the adjustment is faster and more effective. Furthermore, during normal use of the refrigerator door, since the door does not directly contact the first shim, the first shim will not become displaced or fall off due to the movement of the door, resulting in high reliability.

[0075] It is readily understood that, based on the several embodiments provided in this application, those skilled in the art can combine, split, or reorganize the embodiments of this application to obtain other embodiments, none of which exceed the protection scope of this application.

[0076] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A refrigerator door height adjustment device based on a variable-track hinge, applied to a refrigerator, the refrigerator comprising a cabinet and at least one door rotatably connected to the cabinet; characterized in that, include: A hinge (4) connected to the box body; a first hinge shaft (41) and a second hinge shaft (42) are spaced apart on the hinge (4); the ends of the first hinge shaft (41) and the second hinge shaft (42) away from the hinge (4) are slidably connected to a guide plate (7) provided on the door body; A first washer (5) is disposed between the guide plate (7) and the hinge (4); one side of the first washer (5) is rotatably connected to the first hinge shaft (41); A second washer (6) is respectively sleeved on the outside of the first hinge shaft (41) and the second hinge shaft (42) and slidably connected to the first hinge shaft (41) and the second hinge shaft (42); the second washer (6) is disposed between the guide plate (7) and the first washer (5); The first pad (5) has a first adjustment part on the side facing the second pad (6); the second pad (6) has a second adjustment part on the side facing the first pad (5) for adapting to the shape of the first adjustment part; when the first pad (5) rotates to a first position along the first hinge axis (41), there is a first distance between the opposing surfaces of the first pad (5) and the second pad (6); the first position is the position of the first pad (5) when the first adjustment part and the second adjustment part are engaged; when the first pad (5) rotates to a second position along the first hinge axis (41), there is a second distance between the opposing surfaces of the first pad (5) and the second pad (6), the second distance being greater than the first distance.

2. The refrigerator door height adjustment device based on a variable-track hinge according to claim 1, characterized in that, The second adjustment part is a slider (63); the first adjustment part is a groove (531) that accommodates at least a portion of the slider (63).

3. The refrigerator door height adjustment device based on a variable-track hinge according to claim 2, characterized in that, The groove (531) has a first inclined surface (532) on one side along the rotation direction of the first pad (5); the slider (63) has a second inclined surface (631) on one side that matches the shape of the first inclined surface (532).

4. The refrigerator door height adjustment device based on a variable-track hinge according to any one of claims 1 to 3, characterized in that, The first pad (5) has a first shaft hole (51) on the side away from the first hinge shaft (41) that matches the second hinge shaft (42); the first shaft hole (51) is a semi-circular through hole.

5. The refrigerator door height adjustment device based on a variable-track hinge according to claim 4, characterized in that, The second gasket (6) has a first boss (64) on the side facing the first gasket (5); the first boss (64) has a first through hole (61) at its center; the second hinge shaft (42) passes through the first through hole (61).

6. The refrigerator door height adjustment device based on a variable-track hinge according to claim 5, characterized in that, The outer edge of the first boss (64) is provided with a third inclined surface (641); the inner edge of the first shaft hole (51) is provided with a fourth inclined surface (54) that matches the shape of the third inclined surface (641).

7. The refrigerator door height adjustment device based on a variable-track hinge according to claim 2, characterized in that, The first gasket (5) has a second boss (53) on one side; the second boss (53) has a second through hole (52) at its center; the first hinge shaft (41) passes through the second through hole (52).

8. The refrigerator door height adjustment device based on a variable-track hinge according to claim 2, characterized in that, The groove (531) is provided in multiple ways, and the multiple grooves (531) are arranged at intervals along the circumference of the first hinge axis (41); the multiple grooves (531) have successively increasing depths along the rotation direction of the first gasket (5).

9. The refrigerator door height adjustment device based on a variable-track hinge according to claim 8, characterized in that, When the slider (63) is located in the first groove, the surfaces of the first pad (5) and the second pad (6) are in contact with each other; the first groove is the deepest groove (531) among the plurality of grooves (531).

10. The refrigerator door height adjustment device based on a variable-track hinge according to claim 2, characterized in that, The guide plate (7) includes a first track groove (71) and a second track groove (72); the first hinge shaft (41) slides along the first track groove (71); and the second hinge shaft (42) slides along the second track groove (72).

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