Acquisition method of curved groove body in hinge assembly, hinge assembly and refrigeration device

Abstract

The invention provides a method for obtaining a curved groove body in a hinge assembly, the hinge assembly and a refrigeration device with the hinge assembly, in a plane where a linear groove body and the curved groove body are located, the axis of a first shaft body at an initial position is used as an original point O, and a horizontal shaft which passes through the original point O and is parallel to the transverse direction is used as an x axis; establishing a rectangular coordinate system by taking a vertical axis which passes through the original center and is vertical to the transverse direction as a y axis; wherein the direction of the x-axis on the side where the second shaft body is located is the positive direction, and the direction of the y-axis on the side where the terminal position is located is the positive direction; according to formulas xt = K * cos (theta-A * t) + L * t * cos theta and yt = K * sin (theta-A * t) + L * t * sin theta; fitting to obtain a second track line of the axis movement of the second shaft body; finally, obtaining a curve groove body according to the second track line and the second shaft body; and the door body can uniformly translate and rotate in the rotary opening process, so that the condition of reciprocating motion is avoided, and the motion stability of the door body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a method for obtaining a curved groove body in a hinge assembly, a hinge assembly formed by the method for obtaining the curved groove body, and a refrigeration device having the hinge assembly. Background Art

[0002] A refrigeration device is a device that stores food in a low-temperature environment. Depending on the needs of food preservation, it is stored by freezing or refrigeration to achieve the purpose of keeping food fresh.

[0003] A general refrigeration device, such as a refrigerator, generally includes a box body and a door body that is connected to the box body and rotates around a fixed hinge axis. When the door body rotates and opens, it rotates around the fixed hinge axis. On the one hand, the rotating end of the door body will protrude outwardly from the outside of the box body in a lateral direction, which results in interference with external environmental parts (such as cabinets, etc.) during the opening process of the door body in the application scenario of a built-in refrigerator, affecting the opening of the door body, thereby making the existing refrigeration device with a door body that rotates around a fixed hinge axis unsuitable for embedded use scenarios; on the other hand, when the door body is opened to a maximum opening angle greater than 90°, the rotating end of the door body will block part of the storage space of the box body, affecting the pulling and pulling of the shelves / drawers in the box body, and affecting the user's taking and placing of items.

[0004] In some existing refrigerators, a double-axis double-slot structure (two hinge axes correspond to two hinge slots respectively) is used to flexibly connect the door body to the cabinet, so that the door body can translate in a preset direction while rotating to open, so as to increase the applicable scenarios of the refrigerator and improve the user experience. However, in the existing double-axis double-slot structure, during the door opening process, the movement of the hinge axis in the corresponding hinge slot is not stable, and it is impossible to achieve uniform movement in the hinge slot, thereby affecting the control of the trajectory of the door body opening and closing and the stability of the door body opening and closing. Summary of the invention

[0005] The invention provides a method for obtaining a curved groove body in a hinge assembly, a hinge assembly formed by the method for obtaining a curved groove body, and a refrigeration device having the hinge assembly.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows: a method for obtaining a curved groove in a hinge assembly, wherein the hinge assembly is used to movably connect a door body to a box body, the hinge assembly includes an axis body used to be arranged on one of the box body and the door body, and a groove body used to be arranged on the other of the box body and the door body, the axis body includes a first axis body and a second axis body, the groove body includes a straight groove body matched with the first axis body, and a curved groove body matched with the second axis body, the straight groove body has a relative initial position and a terminal position, when the door body is in a closed state, the first axis body is located at the initial position; when the door body is rotated to open relative to the box body, the first axis body moves from the initial position toward the terminal position, and the hinge assembly has a pivot end and a free end arranged oppositely in the transverse direction; the method for obtaining the curved groove includes the following steps:

[0007] In the plane where the linear slot and the curved slot are located, a rectangular coordinate system is established with the axis center of the first shaft body at the initial position as the origin O, the horizontal axis passing through the origin O and parallel to the horizontal direction as the x-axis, and the vertical axis passing through the origin center and perpendicular to the horizontal direction as the y-axis; wherein the direction where the x-axis is located on the side where the second shaft body is located is the positive direction, and the direction where the y-axis is located on the side where the terminal position is located is the positive direction;

[0008] According to the formula x t =K*cos(θ-A*t)+L*t*cosθ and y t =K*sin(θ-A*t)+L*t*sinθ; the second trajectory line of the axis movement of the second axis body is obtained by fitting; wherein, the interval of t is [0, 1], L is the length of the first trajectory line of the axis movement of the first axis body when it moves from the initial position to the terminal position, θ is the angle between the first trajectory line and the x-axis, K is the distance between the axis center of the first axis body and the axis center of the second axis body, and A is the opening angle of the door body when the first axis body moves to the terminal position;

[0009] The curved groove body is obtained according to the second trajectory line and the second axis body.

[0010] As a further improvement of the present invention, when the first shaft is located at the initial position, the second shaft is located at the first position; the axis of the second shaft located at the first position is located on an extension line of the first trajectory line extending away from the initial position.

[0011] As a further improvement of the present invention, t=L1 / L, wherein L1 is the distance that the axis of the first shaft moves from the initial position toward the terminal position at any moment during the process of the door body rotating and opening relative to the box body.

[0012] As a further improvement of the present invention, the hinge assembly also includes a hinge plate for fixing to the box body, the hinge plate includes a fixing part for fixing to the box body, a horizontal plate connected to the fixing part, the straight groove body and the curved groove body are both arranged on the horizontal plate, and the first axis body and the second axis body are used to be arranged on the door body.

[0013] As a further improvement of the present invention, in a direction from the initial position toward the terminal position, the linear slot body extends obliquely toward the free end and toward the fixing portion.

[0014] In order to achieve the above-mentioned invention objectives, the present invention also provides a hinge assembly, which is used to movably connect a door body to a box body, and the hinge assembly includes an axis body used to be arranged on one of the box body and the door body, and a groove body used to be arranged on the other of the box body and the door body, the axis body includes a first axis body and a second axis body, and the groove body includes a straight groove body matched with the first axis body and a curved groove body matched with the second axis body; the curved groove body is obtained by the method for obtaining the curved groove body in the above-mentioned hinge assembly.

[0015] As a further improvement of the present invention, the hinge assembly further comprises a hinge plate for fixing to the box body, the hinge plate comprises a fixing portion for fixing to the box body, a horizontal plate connected to the fixing portion, and the straight groove body and the curved groove body are both arranged through the horizontal plate;

[0016] The first shaft body includes a first shaft segment matched with the door body, a second shaft segment matched with the linear slot body, and first stoppers provided at opposite ends of the second shaft segment and respectively abutting against opposite sides of the horizontal plate;

[0017] The second shaft body includes a third shaft segment matched with the door body, a fourth shaft segment matched with the curved groove body, and second limit members arranged at opposite ends of the fourth shaft segment and respectively abutting against opposite sides of the horizontal plate.

[0018] In order to achieve the above-mentioned purpose of the invention, the present invention further provides a refrigeration device, including a box body, a door body, and the above-mentioned hinge assembly for movably connecting the door body to the box body.

[0019] As a further improvement of the present invention, the groove body is arranged on the box body, and the shaft body is arranged on the door body; the door body is recessed with a first shaft sleeve matching with the first shaft body and a second shaft sleeve matching with the second shaft body.

[0020] As a further improvement of the present invention, the door body includes a front wall surface, and the box body has a side wall located at the pivot end; when the opening angle of the door body is 90°, the distance that the front wall surface exceeds the side wall along the transverse direction is not more than 4 mm.

[0021] Compared with the prior art, the beneficial effect of the present invention lies in: in the method for obtaining the curved groove body in the hinge assembly of the present invention, by obtaining the curved groove body that can make the first axis body move uniformly in a straight line along the straight groove body and rotate open uniformly during the process of rotating and opening the door body, the door body can translate and rotate uniformly during the process of rotating and opening, avoiding reciprocating motion and improving the smoothness of the door body movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a top view of a hinge assembly in a specific embodiment of the present invention (the door body is in a closed state);

[0023] Figure 2 yes Figure 1 A top view of the hinge assembly in FIG. 1 (the door body is in a rotated open state);

[0024] Figure 3 yes Figure 1 A structural schematic diagram of the hinge assembly from another angle;

[0025] Figure 4 yes Figure 3 Exploded diagram of

[0026] Figure 5 It is a schematic structural diagram of a refrigeration device in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the attached specific embodiments of the present invention. Figures 1 to 5 , a clear and complete description of the technical solutions in the embodiments of the present invention is given. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] It should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium, and can be a fixed connection or a movable connection or a detachable connection or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Please refer to Figure 1 to Figure 5As shown, the present invention provides a method for obtaining the curved groove body 4 in a hinge assembly 10, wherein the hinge assembly 10 is used to flexibly connect the door body 6 to the box body 5, and the hinge assembly 10 includes an axis body used to be arranged on one of the box body 5 and the door body 6, and a groove body used to be arranged on the other of the box body 5 and the door body 6, wherein the axis body includes a first axis body 1 and a second axis body 2, and the groove body includes a straight groove body 3 matched with the first axis body 1 and a curved groove body 4 matched with the second axis body 2. After the door body 6 is flexibly connected to the box body 5 by the hinge assembly 10, during the process of the door body 6 rotating to open, the first axis body 1 moves along the straight groove body 3, and the second axis body 2 moves along the curved groove body 4, so that the door body 6 is synchronously translated along a preset direction while rotating to open, so that the corresponding refrigeration device 100 can be applicable to multiple scenarios, such as embedded scenarios, thereby enhancing the versatility of the refrigeration device 100.

[0030] In a specific embodiment, the shaft is provided on the door body 6, and the groove is provided on the box body 5. Specifically, the hinge assembly 10 further includes a hinge plate 7 for fixing to the box body 5, and the hinge plate 7 includes a fixing portion 71 for fixing to the box body 5, and a horizontal plate 72 connected to the fixing portion 71. The straight groove 3 and the curved groove 4 are both provided on the horizontal plate 72. Of course, this is not limited to this. In other embodiments, the shaft may also be provided on the horizontal plate 72, and correspondingly, the groove is provided on the door body 6.

[0031] In the present invention, on the premise that the first axis 1, the second axis 2 and the straight groove 3 are all determined, a curved groove 4 is obtained that enables the first axis 1 to move uniformly in a straight line along the straight groove 3 and rotate to open uniformly during the process of rotating and opening the door body 6. Thus, the door body 6 can translate and rotate uniformly during the process of rotating and opening, avoiding reciprocating motion and improving the smoothness of the movement of the door body 6.

[0032] Combination Figure 1-2 As shown, the hinge assembly 10 is defined as having a pivot end and a free end that are arranged relatively along the transverse direction F. That is, the pivot end and the free end are arranged along the transverse direction F. It is known that the pivot end refers to the end of the hinge assembly 10 corresponding to the end of the door body 6 that rotates relative to the box body 5. After the door body 6 is movably connected to the opening side of the box body 5 through the hinge assembly 10, the corresponding transverse direction F is also parallel to the plane where the opening side is located.

[0033] Specifically, the linear slot 3 has a relative initial position A and a terminal position B. When the door body 6 is in a closed state, the first shaft body 1 is located at the initial position A; when the door body 6 is rotated to open relative to the box body 5, the first shaft body 1 moves linearly from the initial position A toward the terminal position B. Figure 2 As shown, the method for obtaining the curved slot body 4 includes the following steps:

[0034] In the plane where the linear slot body 3 and the curved slot body 4 are located, a rectangular coordinate system is established with the axis center of the first shaft body 1 at the initial position A as the origin O, the horizontal axis passing through the origin O and parallel to the horizontal direction F as the x-axis, and the vertical axis passing through the origin center and perpendicular to the horizontal direction F as the y-axis; wherein the direction of the x-axis on the side where the second shaft body 2 is located is the positive direction, and the direction of the y-axis on the side where the terminal position B is located is the positive direction;

[0035] According to the formula x t =K*cos(θ-A*t)+L*t*cosθ and y t =K*sin(θ-A*t)+L*t*sinθ; the second trajectory line D of the axial movement of the second shaft body 2 is obtained by fitting; wherein, the interval of t is [0, 1], L is the length of the first trajectory line C of the axial movement of the first shaft body 1 when it moves from the initial position A to the terminal position B, θ is the angle between the first trajectory line C and the x-axis, K is the distance between the axis of the first shaft body 1 and the axis of the second shaft body 2, and A is the opening angle of the door body 6 when the first shaft body 1 moves to the terminal position B;

[0036] The curved groove body 4 is obtained according to the second trajectory line D and the second shaft body 2 .

[0037] Among them, the formula x t =K*cos(θ-A*t)+L*t*cosθ is the horizontal coordinate of any point in the second trajectory line D, and the formula y t =K*sin(θ-A*t)+L*t*sinθ is the ordinate of any point in the second trajectory line D, so it can be calculated according to the formula x t =K*cos(θ-A*t)+L*t*cosθ and y t =K*sin(θ-A*t)+L*t*sinθ are fitted together to obtain the second trajectory line D of the axial motion of the second shaft body 2.

[0038] Specifically, when the first shaft body 1 is located at the initial position A, the second shaft body 2 is located at the first position E; the axis of the second shaft body 2 located at the first position E is located on the extension line of the first trajectory line C extending away from the initial position A.

[0039] Wherein, t=L1 / L, wherein L1 is the distance that the axis of the first shaft body 1 moves from the initial position A to the terminal position B at any time during the process of the door body 6 rotating and opening relative to the box body 5. That is, t can be regarded as the ratio of the distance that the first shaft body 1 moves to the length of the entire first trajectory line C when the door body 6 rotates and opens.

[0040] Next, combine Figure 2 As shown, the derivation process of the above two formulas is explained as follows:

[0041] Assuming that the distance that the door body 6 rotates and opens until the axis of the first shaft body 1 moves from the initial position A toward the terminal position B is L1, at this time, t = L1 / L, because the door body 6 rotates evenly during the rotation and opening process, thus, at this time, the rotation and opening angle of the door body 6 α = A*t;

[0042] The abscissa xt of the axis of the second axis 2 is the sum of the abscissa of the axis of the first axis 1 and the projection length of the line connecting the axis of the first axis 1 and the axis of the second axis 2 on the x-axis. At this time, the abscissa of the axis of the first axis 1 is L1*cosθ, that is, L*t*cosθ, and the projection length of the line connecting the axis of the first axis 1 and the axis of the second axis 2 on the x-axis is K*cos(θ-A*t), so it can be concluded that the abscissa xt of the axis of the second axis 2 is t =K*cos(θ-A*t)+L*t*cosθ.

[0043] Similarly, the ordinate yt of the axis of the second axis 2 is the sum of the ordinate of the axis of the first axis 1 and the projection length of the line connecting the axis of the first axis 1 and the axis of the second axis 2 on the y-axis. At this time, the ordinate of the axis of the first axis 1 is L1*sinθ, that is, L*t*sinθ, and the projection length of the line connecting the axis of the first axis 1 and the axis of the second axis 2 on the y-axis is K*sin(θ-A*t), so it can be concluded that the ordinate yt of the axis of the second axis 2 is t =K*sin(θ-A*t)+L*t*sinθ.

[0044] It can be known that after obtaining the second trajectory line D, the curved groove body 4 can be obtained in combination with information such as the size of the second axis body 2, and then the curved groove body 4 obtained can be formed into the curved groove body 4 in the hinge assembly 10, so that the door body 6 can be evenly translated and rotated during the rotation and opening process, thereby improving the smoothness of the movement of the door body 6 during the rotation and opening process.

[0045] In a specific embodiment in which the slot body is used to be arranged on a hinge plate 7 fixed on a box body 5, the straight slot is a short slot close to the pivot end, and the curved slot is a long slot located on the side of the straight slot away from the pivot end. Of course, this is not limited to this. In other embodiments, the straight slot can also be a long slot located on the side of the curved slot away from the pivot end to be protected. In this case, the curved slot is a short slot. Specifically, in a specific embodiment in which the straight slot is a short slot, the straight slot is arranged such that: from the initial position A toward the terminal position B, the straight slot body 3 extends obliquely toward the free end and toward the fixing portion 71. After the hinge assembly 10 is applied to the refrigeration device 100, during the process of rotating and opening the door body 6, the first axis 1 moves from the initial position A toward the terminal position B, driving the door body 6 to translate toward the free end and toward the direction of the box body 5, thereby avoiding interference between the door body 6 and external environmental parts (such as the cabinet 20, etc.), and moving the door body 6 backward, reducing the distance between the door body 6 and the box body 5, and moving the center of gravity of the door body 6 backward to avoid the door body 6 from tipping over.

[0046] Furthermore, combined with Figure 3 to Figure 5 As shown, the present invention further provides a hinge assembly 10 and a refrigeration device 100 having the hinge assembly 10. The refrigeration device 100 comprises a box body 5, a door body 6, and the hinge assembly 10 movably connecting the door body 6 to the box body 5.

[0047] The hinge assembly 10 includes an axis body for being arranged on one of the box body 5 and the door body 6, and a slot body for being arranged on the other of the box body 5 and the door body 6. The axis body includes a first axis body 1 and a second axis body 2. The slot body includes a straight slot body 3 matched with the first axis body 1 and a curved slot body 4 matched with the second axis body 2. The curved slot body 4 is obtained by the above-mentioned method for obtaining the curved slot body 4 in the hinge assembly 10. In the process of rotating and opening the door body 6, the first axis body 1 can move and rotate uniformly along the straight slot body 3, and the second axis body 2 can move and rotate uniformly along the curved slot body 4, so that the door body 6 is driven to translate uniformly and rotate uniformly during the process of rotating and opening, thereby improving the stability of the rotating and opening movement of the door body 6.

[0048] In a specific embodiment, the shaft is provided on the door body 6, and the groove is provided on the box body 5. Specifically, the hinge assembly 10 further includes a hinge plate 7 for fixing to the box body 5, and the hinge plate 7 includes a fixing portion 71 for fixing to the box body 5, and a horizontal plate 72 connected to the fixing portion 71. The straight groove 3 and the curved groove 4 are both provided on the horizontal plate 72. Of course, this is not limited to this. In other embodiments, the shaft may also be provided on the horizontal plate 72, and correspondingly, the groove is provided on the door body 6.

[0049] Further, in a specific embodiment in which the slot body is used to be arranged on a hinge plate 7 fixed on the box body 5, the straight slot is a short slot close to the pivot end, and the curved slot is a long slot located on the side of the straight slot away from the pivot end. Of course, it is not limited to this. In other embodiments, the straight slot can also be a long slot located on the side of the curved slot away from the pivot end to be protected. In this case, the curved slot is a short slot. Specifically, in a specific embodiment in which the straight slot is a short slot, the straight slot is arranged such that: from the initial position A toward the terminal position B, the straight slot body 3 extends obliquely toward the free end and toward the fixed portion 71. After the hinge assembly 10 is applied to the refrigeration device 100, during the process of rotating and opening the door body 6, the first axis 1 moves from the initial position A toward the terminal position B, driving the door body 6 to translate toward the free end and toward the direction of the box body 5, thereby avoiding interference between the door body 6 and external environmental parts (such as cabinets 20, etc.), and moving the door body 6 backward to reduce the distance between the door body 6 and the box body 5, so that the center of gravity of the door body 6 moves backward to avoid the door body 6 from tipping over, making the refrigeration device 100 suitable for embedded usage scenarios.

[0050] Furthermore, the straight slot body 3 and the curved slot body 4 are both arranged to penetrate the horizontal plate 72. The first shaft body 1 includes a first shaft segment 11 matched with the door body 6, a second shaft segment 12 matched with the straight slot body 3, and a first stopper 13 provided at opposite ends of the second shaft segment 12 and respectively abutting against opposite sides of the horizontal plate 72. The second shaft body 2 includes a third shaft segment 21 matched with the door body 6, a fourth shaft segment 22 matched with the curved slot body 4, and a second stopper 23 provided at opposite ends of the fourth shaft segment 22 and respectively abutting against opposite sides of the horizontal plate 72. Thus, the first shaft body 1 and the second shaft body 2 can be restricted from moving along the axial direction relative to the horizontal plate 72, so that a certain distance can be maintained between the end face of the horizontal plate 72 and the door body 6, avoiding interference and affecting the movement of the door body 6, and at the same time, improving the stability of the hinge assembly 10.

[0051] Specifically, the door body 6 is provided with a first sleeve matched with the first shaft body 1 and a second sleeve matched with the second shaft body 2. That is, the first sleeve matches with the first shaft segment 11, and the second sleeve matches with the third shaft segment 21. During assembly, the hinge assembly 10 and the door body 6 can be assembled by inserting the first shaft segment 11 into the first sleeve and the third shaft segment 21 into the second sleeve, which is convenient for assembly.

[0052] Furthermore, the door body 6 includes a front wall surface, and the box body 5 has a side wall located at the pivot end; when the opening angle of the door body 6 is 90°, the side wall is parallel to the front wall surface, and the distance of the front wall surface exceeding the side wall along the horizontal direction F is not more than 4 mm. Therefore, when the refrigeration device 100 is used to be embedded in an external environment component, such as embedded in a cabinet 20 or embedded in a wall, the gap between the refrigeration device 100 and the external environment component can be reduced, the integrity of the home decoration can be improved, and the door body 6 will not interfere with the external environment component during the rotation and opening process.

[0053] To summarize, in the method for obtaining the curved groove body 4 in the hinge assembly 10 of the present invention, the curved groove body 4 is obtained so that the first axis body 1 can move uniformly in a straight line along the straight groove body 3 and rotate open uniformly during the process of rotating and opening the door body 6, thereby enabling the door body 6 to translate and rotate uniformly during the process of rotating and opening, avoiding reciprocating motion and improving the smoothness of the movement of the door body 6.

[0054] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0055] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention and are not intended to limit the protection scope of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for obtaining a curved slot in a hinge assembly, wherein the hinge assembly is used to movably connect a door body to a box body, the hinge assembly includes an axis body used to be arranged on one of the box body and the door body, and a slot body used to be arranged on the other of the box body and the door body, the axis body includes a first axis body and a second axis body, the slot body includes a straight slot body matched with the first axis body, and a curved slot body matched with the second axis body, the straight slot body has a relative initial position and a terminal position, when the door body is in a closed state, the first axis body is located at the initial position; when the door body is rotated to open relative to the box body, the first axis body moves from the initial position to the terminal position, and the hinge assembly has a pivot end and a free end arranged oppositely in the transverse direction; characterized in that: The method for obtaining the curved slot body comprises the following steps: In the plane where the linear slot and the curved slot are located, a rectangular coordinate system is established with the axis center of the first shaft body at the initial position as the origin O, the horizontal axis passing through the origin O and parallel to the horizontal direction as the x-axis, and the vertical axis passing through the origin center and perpendicular to the horizontal direction as the y-axis; wherein the direction where the x-axis is located on the side where the second shaft body is located is the positive direction, and the direction where the y-axis is located on the side where the terminal position is located is the positive direction; According to the formula x t =K*cos(θ-A*t)+L*t*cosθ and y t =K*sin(θ-A*t)+L*t*sinθ; the second trajectory line of the axis movement of the second axis body is obtained by fitting; wherein, the interval of t is [0, 1], L is the length of the first trajectory line of the axis movement of the first axis body when it moves from the initial position to the terminal position, θ is the angle between the first trajectory line and the x-axis, K is the distance between the axis center of the first axis body and the axis center of the second axis body, and A is the opening angle of the door body when the first axis body moves to the terminal position; The curved groove body is obtained according to the second trajectory line and the second axis body.

2. The method for obtaining a curved groove in a hinge assembly according to claim 1, characterized in that: When the first shaft body is located at the initial position, the second shaft body is located at the first position; the axis of the second shaft body located at the first position is located on an extension line of the first trajectory line extending in a direction away from the initial position.

3. The method for obtaining a curved groove in a hinge assembly according to claim 1, characterized in that: The t=L1 / L, wherein L1 is the distance that the axis of the first shaft moves from the initial position toward the terminal position at any time during the process of the door body rotating and opening relative to the box body.

4. The method for obtaining a curved groove in a hinge assembly according to any one of claims 1 to 3, characterized in that: The hinge assembly also includes a hinge plate for fixing to the box body, the hinge plate includes a fixing portion for fixing to the box body, a horizontal plate connected to the fixing portion, the straight groove body and the curved groove body are both arranged on the horizontal plate, and the first shaft body and the second shaft body are used to be arranged on the door body.

5. The method for obtaining a curved groove in a hinge assembly according to claim 4, characterized in that: From the initial position toward the terminal position, the linear slot body extends obliquely toward the free end and toward the fixing portion.

6. A hinge assembly, the hinge assembly is used to movably connect a door body to a box body, the hinge assembly comprises an axis body used to be arranged on one of the box body and the door body, and a groove body used to be arranged on the other of the box body and the door body, the axis body comprises a first axis body and a second axis body, and the groove body comprises a straight groove body matched with the first axis body and a curved groove body matched with the second axis body; characterized in that: The curved groove body is obtained by the method for obtaining a curved groove body in a hinge assembly according to any one of claims 1 to 5.

7. The hinge assembly according to claim 6, wherein: The hinge assembly also includes a hinge plate for fixing to the box body, the hinge plate includes a fixing portion for fixing to the box body, a horizontal plate connected to the fixing portion, and the straight groove body and the curved groove body are both arranged through the horizontal plate; The first shaft body includes a first shaft segment matched with the door body, a second shaft segment matched with the linear slot body, and first stoppers provided at opposite ends of the second shaft segment and respectively abutting against opposite sides of the horizontal plate; The second shaft body includes a third shaft segment matched with the door body, a fourth shaft segment matched with the curved groove body, and second limit members arranged at opposite ends of the fourth shaft segment and respectively abutting against opposite sides of the horizontal plate.

8. A refrigeration device, comprising a box body, a door body, and a hinge assembly for movably connecting the door body to the box body; characterized in that: The hinge assembly is the hinge assembly according to any one of claims 6 to 7.

9. The refrigeration device according to claim 8, characterized in that: The groove body is arranged on the box body, and the shaft body is arranged on the door body; a first shaft sleeve matched with the first shaft body and a second shaft sleeve matched with the second shaft body are recessed on the door body.

10. The refrigeration device according to claim 8, characterized in that: The door body includes a front wall surface, and the box body has a side wall located at the pivot end; when the opening angle of the door body is 90°, the distance that the front wall surface exceeds the side wall along the transverse direction is not greater than 4 mm.

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