CN115807603A - Hinge device and refrigerator - Google Patents

Abstract

The invention discloses a hinge device and a refrigerator. The door body of the freezer that utilizes this hinge means is at the in-process of opening, under same angle of opening the door, the door body can be more ground upward movement to expose bigger open area for current freezer, realized the door body and opened bigger opening under same turned angle, be convenient for getting of food put and observe the condition of putting in the freezer, thereby be convenient for the user with mode operation freezer more laborsaving, improved user's use and experienced.

Description

Hinge device and refrigerator

Technical Field

The invention relates to a hinge device, in particular to a refrigerator with the hinge device.

Background

As shown in figure 1, a door body of a conventional refrigerator is turned upwards to be opened, and an opening of a box body below the refrigerator is exposed. In the process of using by users, there are various requirements due to the limitation of scenes, and typical scenes are as follows: the user can expose the opening with the door body upwards rotation, the door body opening angle is bigger, the exposed opening is bigger, but opening angle is bigger, user's arm need move longer distance, also need make bigger power, and when the customer only wanted to get a little article, even only when just only seeing the inside storage condition of freezer, the user does not want to spend bigger power to open the door, so door body rotation angle is bigger to expose the opening, with the user hope to reduce the opening angle and expose and form the contradiction between the bigger opening, user's use experience has been influenced.

Disclosure of Invention

In order to solve the problems in the prior art, the invention aims to provide a hinge device and a refrigerator with the same.

In order to achieve the above object, according to one embodiment of the present invention, there is provided a hinge device including:

a lower hinge housing for connecting the case;

the upper hinge shell is used for connecting the door body;

the first rotating part comprises a first groove body and a first shaft body, and the first groove body limits the sliding distance of the first shaft body;

the second rotating part comprises a second groove body and a second shaft body, the second groove body limits the sliding distance of the second shaft body, and the upper hinge shell is rotatably connected to the lower hinge shell through the first rotating part and the second rotating part;

the elastic supporting part comprises a fixed end fixedly connected with the lower hinge shell, a bearing end connected with the first rotating part or the second rotating part, and an elastic supporting part arranged between the fixed end and the bearing end;

the upper hinge shells simultaneously move in a first direction having an upward component during at least part of their rotation about the lower hinge shell.

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

go up the hinge shell and wind hinge shell pivoted at least partial in-process down, the rotation instant center is located the rear of first predetermined face, first predetermined face is for crossing the plane that the back lower extreme of the door body and the below slope backward, the first included angle of predetermineeing face and horizontal plane is 45.

As a further improvement of the present invention, a contact position of the first shaft body and the first groove body forms a first common normal line, a contact position of the second shaft body and the second groove body forms a second common normal line, and the instantaneous center of rotation is an intersection point of the first common normal line and the second common normal line.

As a further improvement of the present invention, the elastic supporting member includes a supporting beam, a supporting rod, and an elastic member sleeved outside the supporting rod, the supporting beam includes the fixed end connected to the lower hinge shell, one end of the elastic member is fixed to the supporting beam, and the other end of the elastic member abuts against the supporting rod.

As a further improvement of the present invention, the support rod includes the bearing end connected to the first shaft body or the second shaft body.

As a further improvement of the present invention, the first slot body and the second slot body are provided to one of the lower hinge shell or the upper hinge shell, and the first shaft body and the second shaft body are provided to the other of the lower hinge shell or the upper hinge shell.

As a further improvement of the present invention, the first groove body and the second shaft body are provided to one of the lower hinge housing or the upper hinge housing, and the first shaft body and the second groove body are provided to the other of the lower hinge housing or the upper hinge housing.

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

the sliding shaft is connected to the lower hinge shell in a sliding mode and is parallel to the first shaft body;

the connecting piece comprises a bearing end which is pivotally connected with the first shaft body, and the connecting piece is also pivotally connected with the sliding shaft;

and the limiting part is arranged on the lower hinge shell and limits the movement direction of the sliding shaft.

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 housing;

the elastic support portion further includes a linkage portion including:

the sliding shaft is connected to the lower hinge shell in a sliding mode and is parallel to the third shaft body;

the connecting piece comprises a bearing end which is pivotally connected with the third shaft body, and the connecting piece is also pivotally connected with the sliding shaft;

and the limiting part is arranged on the lower hinge shell and limits the movement direction of the sliding shaft.

In order to achieve one of the above objects, an embodiment of the present invention provides a refrigerator, which includes the above hinge device.

Compared with the prior art, the invention has the following beneficial effects: the door body of the freezer that utilizes this hinge means is at the in-process of opening, under same angle of opening the door, the door body can be more ground upward movement to expose bigger open area for current freezer, realized the door body and opened bigger opening under same turned angle, be convenient for getting of food put and observe the condition of putting in the freezer, thereby be convenient for the user with mode operation freezer more laborsaving, improved user's use and experienced.

Drawings

Fig. 1 is a side view of a prior art cooler;

fig. 2 is a side view of a cooler of one embodiment of the present invention;

FIG. 3 is a side view of a prior art refrigerator door body when opened in comparison to one embodiment of the present invention;

FIG. 4a is a schematic structural diagram of a hinge device according to an embodiment of the present invention;

FIG. 4b is a front view of a hinge assembly according to an embodiment of the present invention;

FIG. 4c is a side view of a hinge assembly according to one embodiment of the present invention;

FIG. 5a is a schematic structural diagram of a hinge device according to an embodiment of the present invention;

FIG. 5b is a side view of a hinge assembly according to one embodiment of the present invention;

FIG. 6a is a schematic structural diagram of a hinge device according to an embodiment of the present invention;

FIG. 6b is a side view of a hinge assembly according to one embodiment of the present invention;

FIG. 7 is a schematic structural view of a hinge device according to another embodiment of the present invention;

FIG. 8 is a schematic structural view of a hinge device according to still another embodiment of the present invention;

1000, a refrigerator; 100. a hinge device; 200. a door body; 300. a box body; 10. an upper hinge shell; 20. a lower hinge shell; 31. a first shaft body; 32. a first tank body; 41. a second shaft body; 42. a second tank body; 50. a connecting member; 61. a sliding shaft; 62. a limiting part; 71. a support bar; 72. an elastic member; 73. a support beam; 80. and a third shaft body.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

It will be understood that terms used herein such as "upper," "above," "lower," "below," and the like, refer to relative positions in space and are used for convenience in description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

According to the hinge device and the refrigerator with the hinge device, the structure of the hinge is redesigned, upward displacement can be controlled in the process of opening the door body, and the opening area is larger than that of the existing refrigerator under the same door opening angle, so that the door can be opened conveniently and is convenient to take.

This hinge means 100 also can install on equipment such as refrigerator, vertical freezer, gradevin, dish washer, microwave oven, provides a freezer 1000 in this embodiment, including door body 200 and box 300, and box 300 is inside to enclose out the refrigeration space, and door body 200 seals the refrigeration space, is connected through hinge means 100 between door body 200 and the box 300, and hinge means 100 supports opening and closing of door body 200.

The hinge device 100 of the present embodiment includes a lower hinge housing 20, an upper hinge housing 10, a first rotating part, a second rotating part, and an elastic support part. The first rotating portion includes a first groove 32 and a first shaft body 31, the first groove 32 defines a sliding distance of the first shaft body 31; the second rotation part includes a second groove 42 and a second shaft body 41, the second groove 42 defines a sliding distance of the second shaft body 41, and the upper hinge case 10 is rotatably connected to the lower hinge case 20 through the first rotation part and the second rotation part.

In order to clearly express the positions and directions described in the present embodiment, as shown in fig. 2, in the present embodiment, taking a horizontal refrigerator 1000 as an example, the opening of the refrigerator 1000 is defined to be upward, and the opposite direction is defined to be downward, the door 200 is located above the refrigerator 300, a user is located at a side of the refrigerator 300 away from the hinge device 100 to operate the refrigerator 1000, the user is defined to be located in front of the refrigerator 1000, the hinge device 100 is located at the back of the refrigerator 300, and left and right are respectively defined from the front to two sides of the refrigerator 300.

The first shaft 31 can slide out a distance in the first slot 32 and the second shaft 41 can slide out a distance in the second slot 42, i.e. the first slot 32 and the second slot 42 are not circular slots but slots with a length, as shown in fig. 4 a-8, the shaft can move from one end to the other end in the slots. In the process of sliding the first shaft body 31 and the second shaft body 41, the upper hinge shell 10 is turned around the lower hinge shell 20, and in the whole turning process, the upper hinge shell 10 does not always rotate around the first shaft body 31 or the second shaft body 41, but is turned over under the limitation of the first shaft body 31, the first groove body 32, the second shaft body 41 and the second groove body 42.

When the upper hinge shell 10 rotates around the first shaft body 31 and the second shaft body 41 simultaneously, the shapes of the first chute body 32 and the second chute body 42 can be designed as required, so that the center of a circle of the rotation of the upper hinge shell 10 is located at a position of an expected design, and the close arrangement of the first shaft body 31 and the second shaft body 41 does not cause too large moment, so that the hinge can be made thinner, and in addition, particularly, the movement of the door body 200 according with a preset track can be controlled by designing the positions and the shapes of the first chute body 32 and the second chute body 42.

In addition, the first shaft 31 and the second shaft 41 of the present embodiment are merely distinguished as names, and similarly, the first groove body 32 and the second groove body 42 are also distinguished as names for explaining that there are two shafts that can slide a distance in the grooves. The second shaft 41 may also be referred to as the first shaft 31, and the second groove 42 may also be referred to as the first groove 32.

During at least part of the rotation of the upper hinge shell 10 around the lower hinge shell 20, the upper hinge shell 10 simultaneously moves towards a first direction, the first direction has an upward component, that is, the direction of the door body 200 in the closing state of the door body 200 relative to the cabinet 300, so that the door body 200 simultaneously moves upwards more in the upward rotation process, and the movement track of the door body 200 is the superposition of two movements of upward rotation and upward translation.

Taking the conventional hinge of fig. 1 as an example, when the conventional hinge is installed on a refrigerator, after the door body is completely opened, a distance between any point on the door body and the upper surface of the refrigerator is h, and in this embodiment, the door body 200 is controlled to move upward simultaneously in the process of being turned, as shown in fig. 2 to 3, when the door body 200 is opened, a distance between any point on the door body 200 and the upper surface of the refrigerator 300 is reduced, where the reduction is represented by h1, that is, when the door body 200 of this embodiment is opened, a distance between a point on the door body 200 and the upper surface of the refrigerator 300 is h + h1, or a front-back comparison of fig. 3 is also referred to, in the figure, a dotted line is the position of the conventional door body, and a circle center of the door body 200 of this embodiment is the position of an instantaneous center of rotation, the door body 200 of this embodiment moves upward more than the conventional door body 200, so that when the same door body is opened at the same opening angle, for example, when the same door body is opened at the same 45 °, the door body 200 moves upward more, so that the cross-sectional area of the opening for the opening of the user is larger, and the same opening angle is more, the door body is exposed, and the opening area is less, so that the door body 200 is exposed, and the door body is exposed.

As shown in fig. 4a-6b, the hinge device 100 is shown to rotate from the initial position to the position where the upper hinge housing 10 is completely opened, when the upper hinge housing 10 is turned over to the right position, the upper hinge housing 10 of this embodiment moves upward a certain distance relative to the existing hinge that rotates only, and the effect that the open opening area of the refrigerator 1000 is larger under the same rotation angle is achieved.

In addition, the elastic support portion includes a fixed end fixedly connected to the lower hinge housing 20, a receiving end connected to the first rotating portion or the second rotating portion, and an elastic support member disposed between the fixed end and the receiving end. One end of the elastic supporting piece is supported at the fixed end, and the other end of the elastic supporting piece is connected to the first rotating part or the second rotating part, so that the elastic supporting piece can support the first rotating part or the second rotating part and plays a role in supporting the door body 200 to suspend.

The elastic supporting part is supported by the fixed end, the sliding end moves parallel to the connecting plate of the box body 300 along with the movement of the sliding shaft 61, namely, the movement in the direction vertical to the connecting plate of the box body 300 is avoided, the moving space required in the door is reduced, the thickness of the hinge can be reduced, the downward gravity of the door body 200 is applied to the first rotating part and the second rotating part in the upward opening process of the door body 200, and the elastic supporting part is connected with the first rotating part or the second rotating part to support the first rotating part or the second rotating part.

At least part of the process that upper hinge shell 10 rotates around lower hinge shell 20, the instant center of rotation is located the rear of first preset face, first preset face is the plane that passes through the rear lower extreme of door body 200 and inclines to the below backward, the contained angle of first preset face and horizontal plane is 45, the present door body like the dotted line in fig. 3 is opened the position after, and when the position that will rotate the instant center moves to the rear of first preset face, can drive upward movement more with the door body 200 of this embodiment for the present door body to expose bigger opening area under same turned angle.

In fig. 4a-6b, the first groove 32 and the second groove 42 are designed in such a way that the position of the instant center of rotation in at least part of the process is set behind the first predetermined plane according to the above requirement, so the track of the first groove 32 and the second groove 42 is the position of the instant center of rotation required to meet the requirement, according to the non-pure sliding rolling and the three-center theorem of the first shaft 31 and the second shaft 41 in the groove, the contact position of the first shaft 31 and the first groove 32 forms a first common normal line, the contact position of the second shaft 41 and the second groove 42 forms a second common normal line, and the instant center of rotation is the intersection point of the first common normal line and the second common normal line. Therefore, the first and second grooves 32 and 42 are traced such that the intersection of the common normal lines at the target position falls behind the first predetermined plane.

Further, as shown in fig. 4a-6b, the elastic supporting element includes a supporting beam 73, a supporting rod 71, and an elastic element 72 sleeved outside the supporting rod 71, the supporting beam 73 includes a fixed end connected to the lower hinge shell 20, one end of the elastic element 72 is fixed to the supporting beam 73, and the other end of the elastic element is abutted against the supporting rod 71. Two ends of the supporting beam 73 are respectively connected to a pair of opposite side walls of the lower hinge shell 20, an opening is formed in the supporting beam 73, the supporting rod 71 penetrates through the opening, the elastic member 72 can be a spring, supporting sleeves can be arranged at the upper end and the lower end of the spring, as shown in fig. 4a, the supporting sleeve at the lower part is abutted against the supporting beam 73 around the opening, and the supporting sleeve at the upper part is abutted against a protrusion extending from the supporting rod 71.

The spring is always in a compressed state, under the elastic action of the spring, when the upper hinge shell 10 turns upwards, the support rod 71 moves upwards under the driving of the spring, the spring releases partial elastic force, and the spring is still in a compressed state, so that the upper hinge shell 10 can be supported to be opened, the labor-saving effect of opening the door is achieved, and the hovering effect of the door body 200 is supported.

The specific structure of the elastic support part has various embodiments:

in one embodiment thereof:

as shown in fig. 4a-6b, the first shaft 31 is disposed on the upper hinge shell 10, the first groove 32 is disposed on the lower hinge shell 20, the elastic support portion further includes a linkage portion, the linkage portion includes a sliding shaft 61, a connecting piece 50 and a limiting portion 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 pivotally connected to the first shaft body 31, and the connecting member 50 is also pivotally connected to the sliding shaft 61; the stopper 62 is provided to the lower hinge case 20 and defines a moving direction of the sliding shaft 61. Two sets of round holes have been seted up on connecting piece 50, and first axis body 31 passes a set of round hole, and sliding shaft 61 passes another group of round hole, and first axis body 31 and sliding shaft 61 all can be at the round hole internal rotation, and when bracing piece 71 upward movement under the effect of spring, promote sliding shaft 61 along spacing 62 upward movement, sliding shaft 61 promotes connecting piece 50 motion, and connecting piece 50 is connecting first axis body 31 and is driving first axis body 31 motion, is supporting the motion of upper hinge shell 10 then.

The stopper 62 is formed as a linear groove formed in a pair of side walls of the lower hinge case 20 which are opposed to each other, and the sliding shaft 61 moves up and down in the groove in the up-down direction. In addition, the stopper 62 may be provided on a bottom wall connecting the two side walls.

In another embodiment:

the difference from the previous embodiment is that the connecting element 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, as shown in fig. 7, the first rotating part or the second rotating part further includes the 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 housing 10.

The elastic support part further comprises a linkage part, the linkage part comprises a sliding shaft 61, a connecting piece 50 and a limiting part 62, and the sliding shaft 61 is connected to the lower hinge shell 20 in a sliding manner and is parallel to the third shaft body 80; the connecting member 50 includes a receiving end pivotally connected to the third shaft body 80, and the connecting member 50 is also pivotally connected to the sliding shaft 61; the stopper 62 is provided to the lower hinge case 20 and defines a moving direction of the sliding shaft 61. Therefore, the elastic force of the spring is released to the upper hinge shell 10 through the third shaft body 80, and then the first shaft body 31 and the second shaft body 41 release the force, so that the stress of the first shaft body 31 and the second shaft body 41 is more uniform, and the force shared by each shaft body is smaller. In the above embodiment, the force is transmitted to the first shaft 31 and then released to the second shaft 41 through the upper hinge shell 10, so that the force applied to the first shaft 31 is greater than that applied to the second shaft 41, and the requirement on the material strength of the first shaft 31 is higher. The material strength requirements of this embodiment are relatively low.

In the above two embodiments, the support rod 71 can move linearly in the up-and-down direction.

In other embodiments:

the supporting rod 71 includes a direct receiving end connected to the first shaft 31 or the second shaft 41, in this embodiment, the supporting rod 71 swings back and forth while moving up and down, but the sliding shaft 61, the limiting portion 62 and the connecting member 50 are eliminated, so the structure is simpler, but the thickness of the hinge is increased by the back and forth swing of the supporting rod 71.

In addition, various embodiments also exist in the concrete connection mode of the first rotating part and the second rotating part:

in one embodiment thereof:

as shown in fig. 4a to 7, the first slot 32 and the second slot 42 are disposed on 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 on the other of the lower hinge shell 20 or the upper hinge shell 10, at this time, the structural layout is clear.

When the first slot 32 and the second slot 42 are both located on the lower hinge shell 20, as shown in fig. 4a to 6b, the first shaft 31 and the second shaft 41 are both disposed on the upper hinge shell 10, and may extend outward from both sides of the upper hinge shell 10, or may penetrate through the upper hinge shell 10 as shown in the figure.

When the first slot 32 and the second slot 42 are both located on the upper hinge shell 10, as shown in fig. 7, the first shaft 31 and the second shaft 41 are both disposed on the lower hinge shell 20, and pass through the slot on the upper hinge shell 10 between the first shaft and the second shaft, and may extend outward from both sides of the upper hinge shell 10, or may pass through the upper hinge shell 10 as shown in the figure.

In another embodiment:

as shown in fig. 8, the first groove 32 and the second groove 41 are disposed on one of the lower hinge shell 20 or the upper hinge shell 10, and the first groove 31 and the second groove 42 are disposed on the other of the lower hinge shell 20 or the upper hinge shell 10, which is different from the previous embodiment, so as to reduce the problem that one groove is formed near another groove, and conversely, if two grooves are formed on one plate, the distance between the two grooves cannot be too close to each other, or the position closest to the two grooves is deformed and fails; on the other hand, the requirement on the strength of the material is high, and deformation is prevented.

In the solution of this embodiment, for example, the upper hinge shell 10 is provided with a first slot 32, the lower hinge shell 20 is provided with a second slot 42, and the two slots are respectively provided on the two plate bodies, so that on one hand, there is no problem that the two slots cannot be too close to each other, and thus the size of the hinge device 100 can be made thinner, and on the other hand, because the holes dug on each plate are fewer, the supporting effect is better, and the hinge device is not easy to deform, and the requirement for the material strength of the hinge device 100 is lowered.

Further, the first shaft body 31 is parallel to the second shaft body 41, and the first rotating part and the second rotating part together define a instant center of rotation of the upper hinge shell 10 and the lower hinge shell 20, which is in motion during at least part of the rotation of the upper hinge shell 10 about the lower hinge shell 20. Because the instant centers can move, the motion track of the door body 200 does not simply turn around a certain fixed point, but at least two circle centers at different positions exist in the space, and the door body 200 rotates around one of the instant centers and then rotates around the other instant center, so that the door body 200 can be made into a motion track more in line with the expectation.

Correspondingly, in the process of instantaneous center movement of the upper hinge shell 10, the instantaneous center of rotation of the door body 200 is changed, and since the door body 200 is fixed with the upper hinge shell 10 and the box body 300 is fixed with the lower hinge shell 20, the instantaneous centers of the upper hinge shell 10 and the lower hinge shell 20, that is, the instantaneous center of rotation of the door body 200 around the box body 300, that is, the instantaneous centers of rotation of the door body 200 and the box body 300 are in a motion state. For example, relative to the position of the existing door body in fig. 1 after being turned, by controlling the positions of different instantaneous centers, the position of the door body 200 after being turned and opened can be more forward than the existing position, that is, in the process of rotating the door body 200, the position of the instantaneous center of rotation can be changed, and in the process of changing, the instantaneous center of rotation is controlled behind the first preset surface at least in a certain area, so that the door body 200 can move forward in at least part of the positions in the process of rotating.

Compared with the prior art, the embodiment has the following beneficial effects:

the door body 200 of the refrigerator 1000 of the hinge device 100 is in the opening process, and under the same angle of opening the door, the door body 200 can move upwards more, thereby exposing a larger opening area for the existing refrigerator, realizing that the door body 200 opens a larger opening under the same angle of rotation, facilitating the taking and placing of food and observing the placing condition in the refrigerator 1000, thereby facilitating the user to operate the refrigerator 1000 in a more labor-saving manner, and improving the use experience of the user.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is merely a detailed description of possible embodiments of the present invention, and it is not intended to limit the scope of the invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A hinge device, characterized in that it comprises:

a lower hinge housing for connecting the case;

the upper hinge shell is used for connecting the door body;

the first rotating part comprises a first groove body and a first shaft body, and the first groove body limits the sliding distance of the first shaft body;

the second rotating part comprises a second groove body and a second shaft body, the second groove body limits the sliding distance of the second shaft body, and the upper hinge shell is rotatably connected to the lower hinge shell through the first rotating part and the second rotating part;

the elastic supporting part comprises a fixed end fixedly connected with the lower hinge shell, a bearing end connected with the first rotating part or the second rotating part, and an elastic supporting part arranged between the fixed end and the bearing end;

the upper hinge shells simultaneously move in a first direction having an upward component during at least part of their rotation about the lower hinge shell.

2. The hinge assembly as claimed in claim 1, wherein the first shaft body is parallel to the second shaft body, the first rotating portion and the second rotating portion together defining a instant center of rotation of the upper hinge shell and the lower hinge shell;

go up the hinge shell and wind hinge shell pivoted at least partial in-process down, the rotation instant center is located the rear of first predetermined face, first predetermined face is for crossing the plane that the back lower extreme of the door body and the below slope backward, the first included angle of predetermineeing face and horizontal plane is 45.

3. The hinge device as claimed in claim 2, wherein the first shaft body forms a first common normal line with the first groove body at a contact position, the second shaft body forms a second common normal line with the second groove body at a contact position, and the instant center of rotation is an intersection point of the first common normal line and the second common normal line.

4. The hinge assembly as claimed in claim 1, wherein the elastic supporting member includes a supporting beam, a supporting rod, and an elastic member sleeved outside the supporting rod, the supporting beam includes the fixed end connected to the lower hinge housing, one end of the elastic member is fixed to the supporting beam, and the other end of the elastic member abuts against the supporting rod.

5. The hinge assembly of claim 4, wherein the support rod includes the receiving end coupled to the first shaft body or the second shaft body.

6. The hinge assembly of claim 1, wherein the first and second slots are disposed in one of the lower hinge housing or the upper hinge housing, and the first and second shafts are disposed in the other of the lower hinge housing or the upper hinge housing.

7. The hinge assembly of claim 1, wherein the first and second slots are disposed in one of the lower hinge shell or the upper hinge shell, and the first and second shafts are disposed in the other of the lower hinge shell or the upper hinge shell.

8. The hinge device of claim 1, wherein the first shaft is disposed in the upper hinge shell, the first groove is disposed in the lower hinge shell, the elastic support portion further comprises a linkage portion, and the linkage portion comprises:

the sliding shaft is connected to the lower hinge shell in a sliding mode and is parallel to the first shaft body;

the connecting piece comprises a bearing end which is pivotally connected with the first shaft body, and the connecting piece is also pivotally connected with the sliding shaft;

and the limiting part is arranged on the lower hinge shell and limits the movement direction of the sliding shaft.

9. The hinge assembly of claim 1, wherein the first or second rotating portion further comprises a third shaft parallel to the first and second shafts, the third shaft being fixedly connected to the upper hinge housing;

the elastic support portion further includes a linkage portion including:

the sliding shaft is connected to the lower hinge shell in a sliding mode and is parallel to the third shaft body;

the connecting piece comprises a bearing end which is pivotally connected with the third shaft body, and the connecting piece is also pivotally connected with the sliding shaft;

and the limiting part is arranged on the lower hinge shell and limits the movement direction of the sliding shaft.

10. A refrigerator comprising a hinge assembly as claimed in any one of claims 1 to 9.

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