Hinge device and refrigerator

Abstract

This invention discloses a hinge device and a freezer. The hinge device includes a lower hinge shell, an upper hinge shell, a first rotating part, a second rotating part, and an elastic support part. The upper hinge shell moves simultaneously in a first direction, which has a component along the direction of the cabinet body toward the lower hinge shell. When the freezer door using this hinge device is opened, at the same opening angle, the door can move further back, thus exposing a larger opening area compared to existing freezers. This allows the door to open a larger opening at the same rotation angle, facilitating the loading and unloading of food and observation of the contents of the freezer. This makes it easier for users to operate the freezer in a more effortless way, improving the user experience.

Description

Technical Field

[0001] The present invention relates to a hinge device, and more particularly to a refrigerator having the hinge device. Background Technology

[0002] Existing freezers such as Figure 1 As shown, the freezer door rotates upwards to open, revealing the opening of the lower compartment. During use, users may have various needs due to different scenarios. A typical scenario is that users must rotate the door upwards to reveal the opening. The larger the opening angle, the larger the opening, but this also requires the user to move their arm a longer distance and exert more force. However, when customers only want to retrieve a small item or simply check the contents of the freezer, they are unwilling to exert more force to open the door. Therefore, a larger opening angle creates a conflict with the user's desire for a smaller opening angle and a larger opening, negatively impacting the user experience. Summary of the Invention

[0003] To address the problems in the prior art, the present invention aims to provide a hinge device and a refrigerator having the hinge device.

[0004] To achieve the above-mentioned objective, one embodiment of the present invention provides a hinge device, comprising:

[0005] The lower hinge housing is used to connect the housing;

[0006] Upper hinge housing, used to connect the door body;

[0007] The first rotating part includes a first groove and a first shaft, wherein the first groove defines the sliding distance of the first shaft;

[0008] The second rotating part includes a second groove and a second shaft. The second groove defines the sliding distance of the second shaft. The upper hinge shell is rotatably connected to the lower hinge shell through the first rotating part and the second rotating part.

[0009] The elastic support includes a fixed end fixedly connected to the lower hinge shell, a receiving end connected to the first rotating part or the second rotating part, and an elastic support member disposed between the fixed end and the receiving end;

[0010] During at least a portion of the rotation of the upper hinge shell around the lower hinge shell, the upper hinge shell simultaneously moves in a first direction, the first direction having a component along the direction of the housing toward the lower hinge shell.

[0011] As a further improvement of the present invention, the first shaft is parallel to the second shaft, and the first rotating part and the second rotating part together define the instantaneous center of rotation of the upper hinge shell and the lower hinge shell;

[0012] During at least a portion of the rotation of the upper hinge shell around the lower hinge shell, the instantaneous center of rotation is located behind a first preset surface, which is a plane passing through the lower rear end of the door body and tilting upwards and backwards, with the first preset surface forming an angle of 45° with the horizontal plane.

[0013] As a further improvement of the present invention, the contact position between the first shaft and the first groove forms a first common normal line, the contact position between the second shaft and the second groove forms a second common normal line, and the instantaneous center of rotation is the intersection of the first common normal line and the second common normal line.

[0014] As a further improvement of the present invention, the elastic support includes a support beam, a support rod, and an elastic element sleeved on the outside of the support rod. The support beam includes a fixed end connected to the lower hinge shell. One end of the elastic element is fixed to the support beam, and the other end abuts against the support rod.

[0015] As a further improvement of the present invention, the support rod includes the receiving end connected to the first shaft or the second shaft.

[0016] As a further improvement of the present invention, the first groove and the second groove are disposed in one of the lower hinge shell or the upper hinge shell, and the first shaft and the second shaft are disposed in the other of the lower hinge shell or the upper hinge shell.

[0017] As a further improvement of the present invention, the first groove and the second shaft are disposed in one of the lower hinge shell or the upper hinge shell, and the first shaft and the second groove are disposed in the other of the lower hinge shell or the upper hinge shell.

[0018] As a further improvement of the present invention, the first shaft is disposed in the upper hinge shell, the first groove is disposed in the lower hinge shell, and the elastic support portion further includes a linkage portion, the linkage portion comprising:

[0019] A sliding shaft is slidably connected to the lower hinge shell and parallel to the first shaft body;

[0020] A connector, comprising a receiving end pivotally connected to the first shaft, and the connector also pivotally connected to the sliding shaft;

[0021] A limiting part is provided on the lower hinge housing and limits the movement direction of the sliding shaft.

[0022] As a further improvement of the present invention, the first rotating part or the second rotating part further includes a third shaft parallel to the first shaft and the second shaft, and the third shaft is fixedly connected to the upper hinge shell;

[0023] The elastic support portion further includes a linkage portion, the linkage portion comprising:

[0024] A sliding shaft is slidably connected to the lower hinge housing and parallel to the third shaft.

[0025] A connector, comprising a receiving end pivotally connected to the third shaft, and the connector also pivotally connected to the sliding shaft;

[0026] A limiting part is provided on the lower hinge housing and limits the movement direction of the sliding shaft.

[0027] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides a freezer including the aforementioned hinge device.

[0028] Compared with the prior art, the present invention has the following beneficial effects: When the door of the freezer using this hinge device is opened, the door can move further back at the same opening angle, thereby exposing a larger opening area compared with existing freezers. This allows the door to open a larger opening at the same rotation angle, making it easier to take out and put in food and observe the arrangement of food inside the freezer. This makes it easier for users to operate the freezer in a more effortless way, thus improving the user experience. Attached Figure Description

[0029] Figure 1 This is a side view of an existing freezer;

[0030] Figure 2 This is a side view of a freezer according to an embodiment of the present invention;

[0031] Figure 3 This is a side view comparing an existing refrigerator door with an embodiment of the present invention when the refrigerator door is opened;

[0032] Figure 4a This is a schematic diagram of the structure of a hinge device according to an embodiment of the present invention;

[0033] Figure 4b This is a front view of a hinge device according to an embodiment of the present invention;

[0034] Figure 4c This is a side view of a hinge device according to an embodiment of the present invention;

[0035] Figure 5a This is a schematic diagram of the structure of a hinge device according to an embodiment of the present invention;

[0036] Figure 5bThis is a side view of a hinge device according to an embodiment of the present invention;

[0037] Figure 6a This is a schematic diagram of the structure of a hinge device according to an embodiment of the present invention;

[0038] Figure 6b This is a side view of a hinge device according to an embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the hinge device according to another embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of the hinge device according to another embodiment of the present invention;

[0041] Among them, 1000 is the freezer; 100 is the hinge device; 200 is the door; 300 is the cabinet; 10 is the upper hinge shell; 20 is the lower hinge shell; 31 is the first shaft; 32 is the first groove; 41 is the second shaft; 42 is the second groove; 50 is the connector; 61 is the sliding shaft; 62 is the limiting part; 71 is the support rod; 72 is the elastic element; 73 is the support beam; and 80 is the third shaft. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0043] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0044] One embodiment of the present invention provides a hinge device and a refrigerator having the hinge device. By redesigning the hinge structure, it is possible to control the rearward displacement during the opening of the door, so that at the same opening angle, it has a larger opening area compared with existing refrigerators, thereby making it easier to open the door and take out items.

[0045] The hinge device 100 can also be installed on refrigerators, upright freezers, wine cabinets, dishwashers, microwave ovens and other equipment. In this embodiment, a freezer 1000 is provided, including a door 200 and a cabinet 300. The cabinet 300 encloses a refrigeration space, and the door 200 closes the refrigeration space. The door 200 and the cabinet 300 are connected by the hinge device 100, which supports the opening and closing of the door 200.

[0046] The hinge device 100 of this embodiment includes a lower hinge shell 20, an upper hinge shell 10, a first rotating part, a second rotating part, and an elastic support part. The first rotating part includes a first groove 32 and a first shaft 31, the first groove 32 defining the sliding distance of the first shaft 31; the second rotating part includes a second groove 42 and a second shaft 41, the second groove 42 defining the sliding distance of the second shaft 41, and the upper hinge shell 10 is rotatably connected to the lower hinge shell 20 through the first rotating part and the second rotating part.

[0047] The upper hinge shell 10 is fixedly connected to the door body 200, and the lower hinge shell 20 is fixedly connected to the box body 300, as follows. Figure 2 As shown, to clearly express the positions and directions described in this embodiment, a horizontal freezer 1000 is used as an example. The opening of the freezer body 300 is defined as facing upwards, and the opposite direction is defined as downwards. The door 200 is located above the body 300. The user operates the freezer 1000 from the side of the body 300 away from the hinge device 100. The user is defined as being in front of the freezer 1000, and the hinge device 100 is located behind the body 300. The two sides facing the body 300 from the front are defined as left and right, respectively.

[0048] The first shaft 31 can slide a certain distance within the first groove 32, and the second shaft 41 can slide a certain distance within the second groove 42. That is to say, the first groove 32 and the second groove 42 are not a circular groove, but rather a groove with a certain length, such as... Figures 4a-8 As shown, the shaft can move from one end of the groove to the other. During the sliding process of the first shaft 31 and the second shaft 41, the upper hinge shell 10 is rotated around the lower hinge shell 20. During the entire rotation process, the upper hinge shell 10 does not always simply rotate around the first shaft 31 or the second shaft 41, but is simultaneously restricted by the first shaft 31, the first groove 32, the second shaft 41 and the second groove 42 to rotate.

[0049] When the upper hinge shell 10 rotates around the first shaft 31 and the second shaft 41 at the same time, the shapes of the first groove 32 and the second groove 42 can be designed as needed, so that the center of rotation of the upper hinge shell 10 falls on the expected design position. The close proximity of the first shaft 31 and the second shaft 41 will not cause excessive torque, so the hinge can be made thinner. In particular, by designing the position and shape of the first groove 32 and the second groove 42, the door 200 can be controlled to move in accordance with the preset trajectory.

[0050] In addition, the first shaft 31 and the second shaft 41 in this embodiment are only distinguished by name. Similarly, the first groove 32 and the second groove 42 are also distinguished by name, used to describe the existence of two shafts that can slide a certain distance within the groove. The second shaft 41 can also be called the first shaft 31, and the second groove 42 can also be called the first groove 32.

[0051] During at least a portion of the rotation of the upper hinge shell 10 around the lower hinge shell 20, the upper hinge shell 10 simultaneously moves in a first direction, which has a component along the direction of the housing 300 toward the lower hinge shell 20, that is, a backward component. This causes the door 200 to have a backward movement during the rotation process. It can also be understood that the movement trajectory of the door 200 is a superposition of two movements: upward rotation and backward translation.

[0052] by Figure 1 Taking existing hinges as an example, when existing hinges are installed on a freezer, the distance from any point on the door to the frontmost edge of the freezer is d when the door is fully opened. However, in this embodiment, the door 200 is controlled to move backward simultaneously during the flipping process. Figures 2-3 As shown, when the door 200 is opened, the distance from any point on the door 200 to the foremost point of the box 300 will increase, denoted by d1. In other words, in this embodiment, when the door 200 is opened, the distance from the same position on the door 200 to the foremost point of the box 300 becomes d+d1. See also the attached diagram. Figure 3 The before-and-after comparison shows that the dashed line in the figure represents the existing door position, while the solid line represents door 200 in this embodiment. Figure 3 The center of the circle in the diagram is the location of the instantaneous center of rotation. In this embodiment, the door 200 moves more backward than the existing door. Therefore, when opening the door at the same angle, such as 45°, the door 200 moves more backward, resulting in a larger cross-sectional area of ​​the opening to the user. When flipped at the same angle, more opening area is exposed. In other words, when exposing the same opening area, the door 200 rotates less, thus making it easier to open the door 200.

[0053] like Figures 4a-6b As shown, the hinge device 100 rotates sequentially from its initial position to the position where the upper hinge shell 10 is fully open. When the upper hinge shell 10 is flipped into place, compared to the existing hinge that rotates only, the upper hinge shell 10 in this embodiment moves backward a certain distance, achieving the effect of a larger opening area of ​​the freezer 1000 at the same rotation angle.

[0054] In addition, the elastic support includes a fixed end fixedly connected to the lower hinge shell 20, a receiving end connected to the first rotating part or the second rotating part, and an elastic support member disposed between the fixed end and the receiving end. One end of the elastic support member is supported by the fixed end, and the other end is connected to the first rotating part or the second rotating part, which can support it and play the role of supporting the door body 200 to be suspended.

[0055] With the support of the fixed end, the sliding end of the elastic support moves parallel to the connecting plate of the box 300 as the sliding shaft 61 moves, thus avoiding movement in the direction perpendicular to the connecting plate of the box 300, reducing the required internal space, and allowing the hinge to be thinner. During the upward opening of the door 200, the downward gravity of the door 200 is applied to the first rotating part and the second rotating part. The elastic support is connected to the first rotating part or the second rotating part and supports it.

[0056] During at least a portion of the rotation of the upper hinge shell 10 around the lower hinge shell 20, the instantaneous center of rotation is located behind a first preset surface. The first preset surface is a plane passing through the lower rear end of the door body 200 and tilting upwards and backwards. The angle between the first preset surface and the horizontal plane is 45°. Figure 3 The dashed line represents the position of the existing door after it is opened. When the position of the instantaneous center of rotation is moved to the rear of the first preset surface, the door 200 of this embodiment can be driven to move more backward relative to the existing door, thereby exposing a larger opening area under the same rotation angle.

[0057] exist Figures 4a-6b The design method of the first groove 32 and the second groove 42 is as follows: Based on the aforementioned requirements, the position of the instantaneous center of rotation for at least part of the process is set behind the first preset surface. Therefore, the trajectory of the first groove 32 and the second groove 42 needs to ensure that the position of the instantaneous center of rotation meets this requirement. According to the principle that both the first shaft 31 and the second shaft 41 undergo non-pure sliding rolling within the groove and the three-center theorem, the contact position between the first shaft 31 and the first groove 32 forms a first common normal, and the contact position between the second shaft 41 and the second groove 42 forms a second common normal. The instantaneous center of rotation is the intersection of the first and second common normals. Therefore, the trajectory of the first groove 32 and the second groove 42 is such that the intersection of the common normals at the target position falls behind the first preset surface.

[0058] Furthermore, such as Figures 4a-6bAs shown, the elastic support includes a support beam 73, a support rod 71, and an elastic element 72 sleeved on the outside of the support rod 71. The support beam 73 includes a fixed end connected to the lower hinge shell 20. One end of the elastic element 72 is fixed to the support beam 73, and the other end abuts against the support rod 71. The two ends of the support beam 73 are respectively connected to a pair of opposite side walls of the lower hinge shell 20. An opening is provided in the support beam 73, through which the support rod 71 passes. The elastic element 72 can be a spring, and support sleeves can be provided at both the upper and lower ends of the spring. Figure 4a As shown, the lower support sleeve abuts against the support beam 73 around the opening, and the upper support sleeve abuts against the protrusion extending from the support rod 71.

[0059] The spring is always in a compressed state. Under the elastic action of the spring, when the upper hinge shell 10 flips upward, the support rod 71 moves upward under the drive of the spring. The spring releases part of the elastic force, and the spring is still in a compressed state, so it can support the opening of the upper hinge shell 10, which makes opening the door easier and supports the suspension of the door body 200.

[0060] There are several ways to implement the specific structure of the elastic support:

[0061] In one embodiment:

[0062] like Figures 4a-6b As shown, the first shaft 31 is disposed on the upper hinge shell 10, the first groove 32 is disposed on the lower hinge shell 20, and the elastic support part also includes a linkage part, which includes a sliding shaft 61, a connecting member 50 and a limiting part 62. The sliding shaft 61 is slidably connected to the lower hinge shell 20 and parallel to the first shaft 31. The connecting member 50 includes a receiving end that is pivotally connected to the first shaft 31, and the connecting member 50 is also pivotally connected to the sliding shaft 61. The limiting part 62 is disposed on the lower hinge shell 20 and limits the movement direction of the sliding shaft 61. The connector 50 has two sets of round holes. The first shaft 31 passes through one set of round holes, and the sliding shaft 61 passes through the other set of round holes. Both the first shaft 31 and the sliding shaft 61 can rotate within the round holes. When the support rod 71 moves upward under the action of the spring, it pushes the sliding shaft 61 to move upward along the limiting part 62. The sliding shaft 61 pushes the connector 50 to move. The connector 50 connects to the first shaft 31 and drives the first shaft 31 to move, thereby supporting the movement of the upper hinge shell 10.

[0063] The limiting part 62 is configured as a pair of straight grooves on the opposite sidewalls of the lower hinge housing 20, with the grooves extending in the vertical direction. The sliding shaft 61 moves up and down within the vertical grooves. Alternatively, the limiting part 62 can also be provided on the bottom wall connecting the two sidewalls.

[0064] In another implementation:

[0065] The difference from the previous embodiment is that the connector 50 is not connected to the first shaft 31 or the second shaft 41, but is connected to the third shaft 80 on the upper hinge housing 10, such as... Figure 7 As shown, the first rotating part or the second rotating part also includes a third shaft 80 parallel to the first shaft 31 and the second shaft 41, and the third shaft 80 is fixedly connected to the upper hinge shell 10.

[0066] The elastic support also includes a linkage, which comprises a sliding shaft 61, a connector 50, and a limiting part 62. The sliding shaft 61 is slidably connected to the lower hinge shell 20 and parallel to the third shaft 80. The connector 50 includes a receiving end pivotally connected to the third shaft 80 and is also pivotally connected to the sliding shaft 61. The limiting part 62 is disposed in the lower hinge shell 20 and limits the movement direction of the sliding shaft 61. In this way, the spring force is first released to the upper hinge shell 10 through the third shaft 80, and then the force is released to the first shaft 31 and the second shaft 41. The force on the first shaft 31 and the second shaft 41 is more evenly distributed, and the force shared by each shaft is smaller. In the previous embodiment, the force was first transmitted to the first shaft 31 and then released to the second shaft 41 through the upper hinge shell 10, making the force on the first shaft 31 greater than that on the second shaft 41, thus requiring higher material strength from the first shaft 31. Therefore, this embodiment has relatively lower requirements for material strength.

[0067] In both of the above embodiments, the support rod 71 can perform linear motion in the up-down direction.

[0068] In other implementations:

[0069] The support rod 71 includes a direct receiving end connected to the first shaft 31 or the second shaft 41. In this embodiment, the support rod 71 swings back and forth while moving up and down. However, the sliding shaft 61, the limiting part 62 and the connecting part 50 are eliminated, so the structure is simpler. However, the back and forth swing of the support rod 71 increases the thickness of the hinge.

[0070] Furthermore, there are various embodiments regarding the specific connection method between the first rotating part and the second rotating part:

[0071] In one embodiment:

[0072] like Figures 4a-7 As shown, the first groove 32 and the second groove 42 are disposed in one of the lower hinge shell 20 or the upper hinge shell 10, and the first shaft 31 and the second shaft 41 are disposed in the other of the lower hinge shell 20 or the upper hinge shell 10. At this time, the structural layout is clear.

[0073] When both the first groove 32 and the second groove 42 are located on the lower hinge shell 20, such as Figures 4a-6bAs shown, the first shaft 31 and the second shaft 41 are both mounted on the upper hinge shell 10 and can extend outward from both sides of the upper hinge shell 10, or can penetrate the upper hinge shell 10 as shown in the figure.

[0074] When both the first groove 32 and the second groove 42 are located on the upper hinge shell 10, such as Figure 7 As shown, the first shaft 31 and the second shaft 41 are both mounted on the lower hinge shell 20 and pass through the groove on the upper hinge shell 10 between them. They can extend outward from both sides of the upper hinge shell 10, or they can penetrate the upper hinge shell 10 as shown in the figure.

[0075] In another implementation:

[0076] like Figure 8 As shown, the first groove 32 and the second shaft 41 are disposed in one of the lower hinge shell 20 or the upper hinge shell 10, and the first shaft 31 and the second groove 42 are disposed in the other of the lower hinge shell 20 or the upper hinge shell 10. Unlike the previous embodiment, this reduces the need to open another groove near a groove. Conversely, if two grooves are opened on a plate at the same time, on the one hand, the distance between the two grooves cannot be too close, otherwise deformation and failure will occur at the closest position; on the other hand, the material strength requirements are very high to prevent deformation.

[0077] In this embodiment, for example, a first groove 32 is formed on the upper hinge shell 10 and a second groove 42 is formed on the lower hinge shell 20. The two grooves are formed on the two plates respectively. On the one hand, there is no problem that the two grooves cannot be too close together. In this way, the hinge device 100 can be made thinner. On the other hand, since there are fewer holes drilled on each plate, the support effect is better and it is not easy to deform. The requirements for the material strength of the hinge device 100 are reduced.

[0078] Furthermore, the first shaft 31 is parallel to the second shaft 41. The first rotating part and the second rotating part together define the instantaneous centers of rotation of the upper hinge shell 10 and the lower hinge shell 20. During at least part of the rotation of the upper hinge shell 10 around the lower hinge shell 20, the instantaneous centers of rotation are in motion. Because the instantaneous centers can be moved, the movement trajectory of the door 200 is not simply a rotation around a fixed point, but rather a rotation around at least two different centers in space. The door 200 first rotates around one of the instantaneous centers and then around the other instantaneous center, thus allowing the door 200 to make a more desirable movement trajectory.

[0079] Correspondingly, during the instantaneous movement of the upper hinge shell 10, the instantaneous center of rotation of the door 200 also changes. Since the door 200 is fixed to the upper hinge shell 10 and the box 300 is fixed to the lower hinge shell 20, the instantaneous centers of rotation of the upper hinge shell 10 and the lower hinge shell 20, which are also the instantaneous centers of rotation of the door 200 around the box 300, are in motion. For example, relative to... Figure 1 The position of the door after it is flipped can be further back than the existing position by controlling the position of the instantaneous center of rotation. In other words, the position of the instantaneous center of rotation can change during the rotation of the door 200. During the change, the instantaneous center of rotation can be controlled behind the first preset surface in at least a certain area, so that the door 200 can move backward in at least some positions during the rotation.

[0080] Compared with the prior art, this embodiment has the following beneficial effects:

[0081] When the door 200 of the freezer 1000 using the hinge device 100 is opened, at the same opening angle, the door 200 can move further back, thus exposing a larger opening area compared to existing freezers. This allows the door 200 to open a larger opening at the same rotation angle, making it easier to take out and put in food and observe the arrangement inside the freezer 1000. This makes it easier for users to operate the freezer 1000 in a more effortless way, improving the user experience.

[0082] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0083] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hinge device, characterized in that, It includes: The lower hinge housing is used to connect the housing; Upper hinge housing, used to connect the door body; The first rotating part includes a first groove and a first shaft, wherein the first groove defines the sliding distance of the first shaft; The second rotating part includes a second groove and a second shaft. The second groove defines the sliding distance of the second shaft. The upper hinge shell is rotatably connected to the lower hinge shell through the first rotating part and the second rotating part. The elastic support part includes a linkage part, a fixed end fixedly connected to the lower hinge shell, and an elastic support member disposed between the fixed end and the receiving end; the linkage part includes a sliding shaft, a limiting part, and a connecting member, the sliding shaft is slidably connected to the lower hinge shell, the limiting part is disposed in the lower hinge shell and limits the movement direction of the sliding shaft, one end of the connecting member is pivotally connected to the sliding shaft, and the other end of the connecting member serves as the receiving end; Wherein, the first shaft is disposed in the upper hinge shell, the first groove is disposed in the lower hinge shell, and the receiving end is pivotally connected to the first shaft; or... The first rotating part or the second rotating part further includes a third shaft parallel to the first shaft and the second shaft, the third shaft being fixedly connected to the upper hinge shell, and the receiving end being pivotally connected to the third shaft; During at least a portion of the rotation of the upper hinge shell around the lower hinge shell, the upper hinge shell simultaneously moves in a first direction, the first direction having a component along the direction of the housing toward the lower hinge shell.

2. The hinge device according to claim 1, characterized in that, The first shaft is parallel to the second shaft, and the first rotating part and the second rotating part together define the instantaneous center of rotation of the upper hinge shell and the lower hinge shell; During at least a portion of the rotation of the upper hinge shell around the lower hinge shell, the instantaneous center of rotation is located behind a first preset surface, which is a plane passing through the lower rear end of the door body and tilting upwards and backwards, with the first preset surface forming an angle of 45° with the horizontal plane.

3. The hinge device according to claim 2, characterized in that, The contact position between the first shaft and the first groove forms a first common normal, and the contact position between the second shaft and the second groove forms a second common normal. The instantaneous center of rotation is the intersection of the first common normal and the second common normal.

4. The hinge device according to claim 1, characterized in that, The elastic support includes a support beam, a support rod, and an elastic element sleeved on the outside of the support rod. The support beam includes a fixed end connected to the lower hinge shell. One end of the elastic element is fixed to the support beam, and the other end abuts against the support rod.

5. The hinge device according to claim 1, characterized in that, The first groove and the second groove are disposed in one of the lower hinge shell or the upper hinge shell, and the first shaft and the second shaft are disposed in the other of the lower hinge shell or the upper hinge shell.

6. The hinge device according to claim 1, characterized in that, The first groove and the second shaft are disposed in one of the lower hinge shell or the upper hinge shell, and the first shaft and the second groove are disposed in the other of the lower hinge shell or the upper hinge shell.

7. A freezer, characterized in that, Includes the hinge device as described in any one of claims 1 to 6.

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