Refrigeration equipment

Abstract

A box body connecting part of a hinge assembly of the refrigeration equipment comprises a rack, a door body connecting part comprises a rotating shaft and a gear, the rotating shaft and a door body are relatively fixed, the rotating shaft is fixedly connected with the gear, and the gear is meshed with the rack; when the door body is closed, the gear is located at the closing position, after the door body is opened, the gear moves to the opening position along the rack, the opening position is located on the first side of the closing position, and when the door body is closed, the end, away from the hinge assembly, of the door body is located on the side, opposite to the hinge assembly, of the door body on the plane perpendicular to the insertion direction. By means of the meshing structure of the gear and the rack, the door body can rotate around the axis of the door body in the door opening process and can move horizontally in the direction of the rack, the door body can be prevented from interfering with a cabinet or a wall beside when the door body is opened, and using convenience and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a refrigeration device. Background Art

[0002] Embedded refrigeration equipment on the market, especially embedded refrigerators, needs to avoid interference between the door and adjacent cabinets or walls during the door opening process. To this end, dual-axis hinge designs have gradually emerged on the market to keep the door away from adjacent cabinets during rotation. However, when the shafts of existing dual-axis hinges are paired with two slots and move within the slots, the movement sequence is difficult to control. In other words, the relatively random movement of the two shafts within the two slots may not allow the door to move along the intended path, and may even easily cause collisions and jams, resulting in instability or even jamming of the door during opening and closing, affecting the use of the refrigeration equipment and the user experience. In addition, the dual-axis hinge has a relatively complex structure, and the installation and adjustment process is also complicated, often requiring precise alignment and high technical requirements, which increases the difficulty of production and maintenance. Summary of the Invention

[0003] In order to solve the problem in the prior art that a refrigeration device interferes with a cabinet or a wall next to it when the door is opened, the purpose of the present utility model is to provide a refrigeration device that avoids interference during the door opening process.

[0004] To achieve the above-mentioned purpose of the utility model, one embodiment of the utility model provides a refrigeration device, including a box body, a door body and a hinge assembly, wherein the door body is connected to the box body through the hinge assembly, and the hinge assembly includes:

[0005] a box connecting portion, which is fixedly connected to the box, and the box connecting portion includes a rack;

[0006] a door body connecting portion, comprising a rotating shaft and a gear, wherein the rotating shaft extends along an insertion direction of the door body, the rotating shaft is relatively fixed to the door body in a rotation direction with the insertion direction as an axis, the rotating shaft is fixedly connected to the gear, and the gear is meshed with the rack;

[0007] When the door body is closed, the gear is located in the closed position. After the door body is opened, the gear moves along the rack to the open position, and the open position is located on the first side of the closed position, wherein the first side is the side of the door body away from the hinge assembly on a plane perpendicular to the insertion direction when the door body is closed.

[0008] As a further improvement of the present invention, the box connecting portion further comprises a hinge plate, the rack and the gear are both located on a side of the hinge plate away from the box, the hinge plate comprises a slide groove, and the rotating shaft passes through the slide groove.

[0009] As a further improvement of the present invention, the slide groove extends along the direction of movement of the gear, the cross section of the rotating shaft in the slide groove is circular, and the diameter of the circle is consistent with the width of the slide groove.

[0010] As a further improvement of the present invention, the rotating shaft is located at two ends of the sliding groove, and the gears are engaged with the racks.

[0011] As a further improvement of the present invention, the gear is configured as a bevel gear, and the teeth of the rack and the teeth of the bevel gear have the same inclination angle.

[0012] As a further improvement of the present invention, the hinge assembly also includes an adjusting rod, a thread is set on the surface of the adjusting rod, the rotating shaft is provided with a threaded hole passing through it along its extension direction, the adjusting rod is threadedly connected to the threaded hole, the adjusting rod is against the door body, and the distance between the rotating shaft and the gear and the door body can be adjusted by rotating the adjusting rod.

[0013] As a further improvement of the present invention, the rotating shaft further includes a step portion, which is arranged between the gear and the hinge plate, and the step portion abuts against the gear.

[0014] As a further improvement of the present invention, the inclination angle between the teeth of the rack and the teeth of the bevel gear is in the range of 5° to 15°.

[0015] As a further improvement of the present invention, the rotating shaft includes a first constraint surface in contact with the gear and a second constraint surface in contact with the door body. The first constraint surface limits the relative rotation between the rotating shaft and the gear, and the second constraint surface limits the relative rotation between the rotating shaft and the door body.

[0016] As a further improvement of the present invention, the open position is also located on a second side of the closed position, wherein the second side is on a plane perpendicular to the insertion direction, and is a side of the door body relative to the box body.

[0017] Compared with the commonly used technologies, the present invention has the following beneficial effects: by introducing a meshing structure of a gear and a rack into the hinge assembly, the refrigeration equipment enables the door body to not only rotate around its own axis during the door opening process, but also to translate along the direction of the rack, so that the door body can avoid interference with adjacent cabinets or walls when opening the door, thereby improving the convenience and safety of use. In addition, the precise meshing of the gear and the rack ensures the stability and smoothness of the door body during the opening and closing process. This avoids disordered movement such as in a double-axis hinge where different axes and grooves are matched. The gear moves smoothly along the rack, allowing the door body to move stably along the expected trajectory, preventing the door body from shaking and instability, thereby extending the service life of the door body and the hinge assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a refrigeration device door closed according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0020] Figure 3 This is a structural diagram of a hinge assembly and a door body according to an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0022] Figure 5 This is a structural diagram of a refrigeration device with its door open according to an embodiment of the present invention;

[0023] Figure 6 yes Figure 5 A partial enlarged view of point C in the middle;

[0024] Figure 7 This is a schematic diagram of the installation of the hinge assembly and the door body according to one embodiment of the present invention;

[0025] Figure 8 yes Figure 7 A partial enlarged view of point D in the middle;

[0026] Figure 9 This is an exploded view of a hinge assembly according to an embodiment of the present invention;

[0027] Among them, 100, refrigeration equipment; 10, hinge assembly; 11, rack; 111, connecting piece; 12, rotating shaft; 121, first constraint surface; 122, second constraint surface; 123, step portion; 13, gear; 14, hinge plate; 141, slide groove; 15, adjustment rod; 20, box body; 30, door body. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below 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 a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0029] It should be understood that the terms used herein, such as "upper," "above," "lower," and "below," etc., indicating spatial relative positions, are used for ease of explanation to describe the relationship of one element or feature relative to another element or feature as shown in the accompanying drawings. Spatially relative terms may be intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings.

[0030] An embodiment of the present invention provides a refrigeration device that avoids interference during the door opening process.

[0031] The refrigeration device 100 of this embodiment can be a refrigerator, a freezer, a vertical refrigerator, a wine cabinet, etc. The refrigeration device 100 of the embodiment below is described by taking a refrigerator as an example. Figure 1 and Figure 5 As shown, the refrigerator includes a body 20 and a door body 30. The door body 30 and the body 20 enclose a refrigeration space. The refrigeration space includes a refrigeration compartment, a freezer compartment, a variable temperature compartment, etc. The refrigerator also includes a hinge assembly 10. The door body 30 is rotatably connected to the body 20 through the hinge assembly 10.

[0032] More specifically, a refrigerator may be a built-in refrigerator, which has a cabinet body outside the refrigerator, i.e., the refrigerator is embedded in the cabinet body. Generally, the outer surface of the refrigerator is flush with the outer surface of the adjacent cabinet body, resulting in an aesthetically pleasing appearance. When the refrigerator door is opened, it is necessary to minimize collision with the cabinet body. If a collision occurs, interference will occur, resulting in noise or even preventing the door body 30 from opening, which will significantly affect the user experience of the built-in refrigerator. The hinge assembly 10 of this embodiment can also better prevent collision between the door body 30 and the cabinet body when opening, thus meeting the user requirements of a built-in refrigerator.

[0033] The hinge assembly 10 of this embodiment includes a box body connection portion and a door body connection portion. The box body connection portion is fixedly connected to the box body 20 and includes a rack 11. The door body connection portion includes a rotating shaft 12 and a gear 13. The rotating shaft 12 extends along the insertion direction of the door body 30 and is relatively fixed to the door body 30 in the rotation direction with the insertion direction as the axis. The rotating shaft 12 is fixedly connected to the gear 13, and the gear 13 meshes with the rack 11. Due to the meshing design of the gear 13 and the rack 11, when the gear 13 moves along the rack 11, the rotating shaft 12 moves in a straight line along the extension direction of the rack 11 while rotating, and at the same time drives the rotating shaft 12 to move along this trajectory. This allows the door body 30 to not only rotate around its own axis during the door opening process, but also translate along the direction of the rack 11.

[0034] To clearly express the positions and directions described in this embodiment, in this embodiment, the reference gravity direction is defined as downward, the opposite direction is upward, the refrigerator is placed on a horizontal ground, the door 30 is located in front of the cabinet 20 when closed, the opposite direction is the rear, and the two sides of the plane where the upper and lower front and back are located are left and right respectively. Figure 1 and 2 As shown in FIG, the hinge assembly 10 is the hinge on the upper right side of the door body 30. The hinge assembly 10 in the figure is arranged on the right side of the door body 30, and the corresponding door body 30 opens to the right and front. In addition, a similar hinge can be arranged on the lower right side of the door body 30. The shaft 12 can extend in the vertical direction, and the rack 11 extends in the horizontal plane, and the shaft 12 is perpendicular to the rack 11 on the horizontal plane.

[0035] When the door body 30 is closed, the gear 13 is in the closed position. When the door body 30 is opened, the gear 13 moves along the rack 11 to the open position. The open position is located on a first side of the closed position, wherein the first side is the side of the door body 30 that is away from the hinge assembly 10 and opposite to the hinge assembly 10 on a plane perpendicular to the insertion direction when the door body 30 is closed. The open position is the position to which the gear 13 moves when the door body 30 is opened to the maximum opening angle.

[0036] by Figures 1 to 6 Taking the hinge in the embodiment as an example, which is arranged on the right side of the door body 30, on the horizontal plane when the door body 30 is closed, the gear 13 is located on the right side of the rack 11, and the end of the door body 30 away from the hinge assembly 10 is relative to the left side of the hinge assembly 10. During the process of opening the door body 30, the shaft 12 and the gear 13 move to the left along the rack 11. In other words, the end of the door body 30 away from the hinge rotates to the right, while the side close to the hinge assembly 10 moves to the left as a whole. In this way, when the door body 30 is turned right to open, the right end of the door body 30 can be prevented from hitting the cabinet on the right.

[0037] Similarly, if the hinge assembly 10 is on the left side of the door body 30, when the door body 30 is opened to the left, the rack 11 constrains the gear 13 and the shaft 12 to move to the right to prevent the left side of the door body 30 from hitting the cabinet on the left.

[0038] In addition, the left side, right side, and first side here refer to the area on one side. For example, when the door body 30 rotates to the right, it does not necessarily move straight to the right. It can be understood that the movement to the first side here does not necessarily move straight to the left. The rack 11 constrains the gear 13 to move to the left while also constraining the shaft 12 to move forward. That is, the rack 11 can extend to the left front, which can simultaneously avoid the door body 30 from colliding with the cabinet body and the box body 20, ensuring the stability of the shaft 12 and the smoothness of the opening and closing of the door body 30, providing better support and cabinet avoidance effects during use, and improving the user experience of the built-in refrigerator.

[0039] By restricting the extension direction of the rack 11, the door body 30 can avoid interference with adjacent cabinets or walls when opening, improving convenience and safety. In addition, the precise engagement of the gear 13 with the rack 11 ensures the stability and smoothness of the door body 30 during opening and closing. This avoids the disordered movement of a biaxial hinge with different axes and grooves. The gear 13 moves smoothly along the rack 11, allowing the door body 30 to move stably along the intended trajectory, preventing shaking and instability of the door body 30, thereby extending the service life of the door body 30 and the hinge assembly 10.

[0040] In addition to the rack 11, there may be other structures that constrain the gear 13 to always be engaged with the rack 11, for example, Figure 2 、 4 As shown in Figures 6 and 8, the box connection portion of this embodiment also includes a hinge plate 14. The rack 11 and the gear 13 are both located on the side of the hinge plate 14 away from the box 20. The hinge plate 14 includes a slide groove 141, and the rotating shaft 12 passes through the slide groove 141.

[0041] The extension direction of the slide groove 141 is parallel to the direction in which the rack 11 constrains the movement of the gear 13. By constraining the rotating shaft 12 through the slide groove 141, it can be guaranteed that the gear 13 and the rack 11 are smoothly engaged, and there will be no problems of being away from or too tight engagement. In addition, the existence of the slide groove 141 allows the rotating shaft 12 to not only rotate during the door opening process, but also to have a translational movement along the direction of the slide groove 141.

[0042] Slot 141 extends in the direction of movement of gear 13. The cross-section of shaft 12 within slot 141 is circular, with the diameter of the circle matching the width of slot 141. The design of slot 141 ensures smooth and controlled movement of shaft 12 within slot 141, reducing jamming and friction caused by mismatched cross-sectional shapes. The circular cross-section, consistent with the width of slot 141, ensures smooth sliding of shaft 12 within slot 141, preventing wobbling and instability during movement.

[0043] This design not only improves the reliability and durability of the hinge assembly 10, but also enhances the stability and consistency of the door body 30 during the opening and closing process, ensuring that the user can experience a smooth opening and closing experience during use.

[0044] In addition, at the positions where the rotating shaft 12 is located at the two ends of the slide groove 141, the gear 13 is engaged with the rack 11. That is to say, in the process of the door body 30 opening from the closed position to the maximum door opening, the gear 13 is always engaged with the rack 11. This ensures that no matter whether the door body 30 is in the open or closed state, the gear 13 and the rack 11 are always tightly engaged, preventing the door body 30 from loosening and instability at different positions, enhancing the reliability and durability of the hinge assembly 10, avoiding the sagging or deviation of the door body 30 due to poor engagement, and further improving the safety of use and user experience.

[0045] The gear 13 is configured as a bevel gear 13, and the teeth of the rack 11 and the bevel gear 13 have the same inclination angle. The design of the bevel gear 13 allows for forces in both the horizontal and vertical directions, which can bear greater forces and provide a tighter meshing, ensuring that the tooth surfaces of the gear 13 and the rack 11 are in close contact during meshing, thereby improving the accuracy and stability of the meshing.

[0046] like Figure 8 and 9 As shown, the hinge assembly 10 of this embodiment also includes an adjusting rod 15, a thread is set on the surface of the adjusting rod 15, and the rotating shaft 12 is provided with a threaded hole passing through it along its extension direction. The adjusting rod 15 is threadedly connected to the threaded hole, and the adjusting rod 15 is against the door body 30. By rotating the adjusting rod 15, the distance between the rotating shaft 12 and the gear 13 and the door body 30 can be adjusted.

[0047] Through a threaded connection, adjustment rod 15 can be rotated to adjust the distance between shaft 12, gear 13, and door body 30. Adjustment rod 15 allows the user to adjust the tightness of the meshing between gear 13 and rack 11 as needed during installation and use. Rotating adjustment rod 15 vertically moves gear 13 and shaft 12, thereby varying the meshing depth and ensuring smooth and stable opening and closing of door body 30.

[0048] Specifically, when the adjustment rod 15 rotates downward (e.g., clockwise), if the adjustment rod 15 has already abutted against the door body 30, the adjustment rod 15 may not be able to move downward any further and can only rotate in place, thereby driving the rotating shaft 12 to move in the opposite direction, i.e., upward. Conversely, when the adjustment rod 15 rotates upward (e.g., counterclockwise), it can drive the rotating shaft 12 downward in the opposite direction. The up and down movement of the rotating shaft 12 drives the up and down movement of the gear 13, thereby adjusting the gap between the gear 13 and the rack 11 of the bevel gear structure 13.

[0049] When the gap is too small, the meshing is too tight, affecting the rotation and opening of the door body 30. When the gap is too large, the meshing is too loose, and the door body 30 may shake when opening. This design can continue to adjust to the appropriate tightness between the gear 13 and the rack 11 after installation. This design makes the installation and adjustment of the hinge assembly 10 more convenient and flexible, and can be precisely adjusted according to actual needs, thereby improving the overall usage experience and applicability of the equipment.

[0050] In addition, during long-term use, some parts become loose and the gap increases, causing the rotation of the door body 30 to shake, which is not as expected. In this way, by adjusting the adjustment rod 15 and re-adjusting the gap between the gear 13 and the rack 11, the door body 30 can be easily kept in stable rotation during long-term use.

[0051] like Figure 8 As shown, the rotating shaft 12 further includes a step portion 123 . The step portion 123 is disposed between the gear 13 and the hinge plate 14 , and the step portion 123 abuts against the gear 13 .

[0052] By adding a step 123 to the shaft 12, the step 123 provides additional support and restraint for the gear 13, ensuring that the shaft 12 rises and falls while simultaneously driving the up and down movement of the gear 13, thereby improving the durability and reliability of the hinge assembly 10. This design ensures that the gear 13 always remains in the correct position during the meshing process, further enhancing the smoothness and consistency of the door body 30 during opening and closing, and improving the overall performance and service life of the device.

[0053] In addition, the inclination angle between the teeth of the rack 11 and the teeth of the bevel gear 13 is within the range of 5° to 15°. This angle range is designed through experimental optimization to ensure that the meshing between the gear 13 and the rack 11 can be maintained at different positions and that the adjustment rod 15 can adjust the gap between the gear 13 and the rack 11 to maintain the optimal movement state.

[0054] By precisely controlling the tilt angle, the meshing force can be optimized, making the door body 30 more stable and smooth during opening and closing. This not only ensures the stability of the door body 30 during use, but also reduces wear caused by poor meshing, extending the service life of the hinge assembly 10. This design also accommodates various manufacturing and installation errors, improving the product's fault tolerance and applicability, ensuring excellent performance in various usage scenarios.

[0055] like Figure 8As shown, the rotating shaft 12 includes a first restraining surface 121 that contacts the gear 13, and a second restraining surface 122 that contacts the door body 30. The first restraining surface 121 limits the relative rotation between the rotating shaft 12 and the gear 13, and the second restraining surface 122 limits the relative rotation between the rotating shaft 12 and the door body 30. The first restraining surface and the second restraining surface prevent relative rotation between the two parts through the contact of the restraining surfaces.

[0056] These constraint surfaces can limit the relative rotation between the rotating shaft 12, the gear 13 and the door body 30, thereby ensuring the stability and consistency of the hinge assembly 10 during operation, and preventing the gear 13 from not rotating synchronously with the rotation of the door body 30 during the rotation of the door body 30. In other words, the rotation angle of the door body 30 can always be consistent with the rotation angle of the gear 13. This design improves the accuracy and reliability of the hinge assembly 10, and ensures the stability and safety of the door body 30 during use.

[0057] In addition, the open position is simultaneously located on the second side of the closed position, wherein the second side is a side of the door body 30 opposite to the box body 20 on a plane perpendicular to the insertion direction.

[0058] by Figures 1-2 Taking the hinge in FIG3 as an example, which is arranged on the right side of the door body 30, on the horizontal plane when the door body 30 is closed, the gear 13 is located on the rear side of the rack 11, and the door body 30 is far in front of the box body 20. During the opening process of the door body 30, the shaft 12 and the gear 13 move forward along the rack 11, that is, the side of the door body 30 close to the hinge assembly 10 also moves forward. In this way, when the door body 30 turns right to open, it can simultaneously achieve leftward and forward movement on the side close to the hinge assembly 10, avoiding collision with both the cabinet body and the box body 20. Correspondingly, the extension directions of the rack 11 and the slide slot 141 both extend to the left and front.

[0059] Similarly, if the hinge assembly 10 is on the left side of the door body 30, when the door body 30 is opened to the left, the rack 11 constrains the gear 13 and the rotating shaft 12 to move toward the right front side to prevent the left side of the door body 30 from hitting the left side of the box body 20. At this time, the extension directions of the rack 11 and the slide groove 141 both extend toward the right front.

[0060] In addition, the front side, rear side, and second side here all mean within one side area. For example, when the door body 30 rotates to the front side, it does not necessarily move straight to the front side. Instead, while moving forward, it can also constrain the rotating shaft 12 to move to the left or right. That is, the rack 11 can extend to the left front, which can simultaneously prevent the door body 30 from colliding with the cabinet body and the box body 20, ensuring the stability of the rotating shaft 12 and the smoothness of the opening and closing of the door body 30, providing better support and cabinet avoidance effect during use, and improving the user experience of the built-in refrigerator.

[0061] This design ensures that the door body 30 can always maintain the correct position and trajectory during the opening and closing process, avoids interference between the door body 30 and the box body 20, and ensures that the door body 30 can maintain good operability and safety in different usage scenarios.

[0062] Compared with the prior art, this embodiment has the following beneficial effects:

[0063] On the one hand, the refrigeration equipment 100 introduces a meshing structure of the gear 13 and the rack 11 in the hinge assembly 10, so that the door body 30 not only rotates around its own axis during the door opening process, but also translates along the direction of the rack 11, so that the door body 30 can avoid interference with adjacent cabinets or walls when opening the door, thereby improving the convenience and safety of use. In addition, the precise meshing of the gear 13 and the rack 11 ensures the stability and smoothness of the door body 30 during the opening and closing process. To avoid disordered movement such as in a biaxial hinge where different axes and grooves are matched, the gear 13 moves smoothly along the rack 11, allowing the door body 30 to move stably along the expected trajectory, preventing the door body 30 from shaking and instability, thereby extending the service life of the door body 30 and the hinge assembly 10.

[0064] On the other hand, through the design of the adjustment rod 15 and the supporting structure, the appropriate tightness between the gear 13 and the rack 11 can be continued to be adjusted after the hinge assembly 10 is installed, and it can also be more convenient to maintain during long-term use. This design makes the installation and adjustment of the hinge assembly 10 more convenient and flexible, and can be precisely adjusted according to actual needs, thereby improving the overall user experience and applicability of the equipment.

[0065] It should be understood that although this specification is described in terms of implementation methods, not every implementation method 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 implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0066] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A refrigeration device (100), comprising a housing (20), a door (30) and a hinge assembly (10), wherein the door (30) is connected to the housing (20) via the hinge assembly (10), characterized in that: The hinge assembly (10) comprises: a box connecting portion fixedly connected to the box (20), wherein the box connecting portion comprises a rack (11); A door body connecting portion, comprising a rotating shaft (12) and a gear (13), wherein the rotating shaft (12) is relatively fixed to the door body (30), the rotating shaft (12) is fixedly connected to the gear (13), and the gear (13) is meshed with the rack (11); When the door body (30) is closed, the gear (13) is located in the closed position. After the door body (30) is opened, the gear (13) moves along the rack (11) to the open position, and the open position is located on the first side of the closed position, wherein the first side is the side of the door body (30) away from the hinge assembly (10) on a plane perpendicular to the insertion direction of the rotating shaft (12) into the door body (30) when the door body (30) is closed and relative to the hinge assembly (10).

2. The refrigeration device (100) according to claim 1, characterized in that: The box body connecting portion further comprises a hinge plate (14), the rack (11) and the gear (13) are both located on a side of the hinge plate (14) away from the box body (20), the hinge plate (14) comprises a slide groove (141), and the rotating shaft (12) passes through the slide groove (141).

3. The refrigeration device (100) according to claim 2, characterized in that: The slide groove (141) extends along the direction in which the gear (13) moves. The cross section of the rotating shaft (12) in the slide groove (141) is circular, and the diameter of the circle is consistent with the width of the slide groove (141).

4. The refrigeration device (100) according to claim 2, characterized in that: The rotating shaft (12) is located at the two ends of the sliding groove (141), and the gear (13) is meshed with the rack (11).

5. The refrigeration device (100) according to claim 2, characterized in that: The rotating shaft (12) further includes a step portion (123), wherein the step portion (123) is arranged between the gear (13) and the hinge plate (14), and the step portion (123) abuts against the gear (13).

6. The refrigeration device (100) according to claim 1, characterized in that: The gear (13) is configured as a bevel gear (13), and the teeth of the rack (11) and the teeth of the bevel gear (13) have the same inclination angle.

7. The refrigeration device (100) according to claim 6, characterized in that: The hinge assembly (10) further includes an adjusting rod (15), a surface of which is provided with a thread, and the rotating shaft (12) is provided with a threaded hole extending along its extension direction, the adjusting rod (15) is threadedly connected to the threaded hole, and the adjusting rod (15) is in contact with the door body (30), and the distance between the rotating shaft (12) and the gear (13) and the door body (30) can be adjusted by rotating the adjusting rod (15).

8. The refrigeration device (100) according to claim 6, characterized in that: The inclination angle between the teeth of the rack (11) and the teeth of the bevel gear (13) is within the range of 5° to 15°.

9. The refrigeration device (100) according to claim 1, characterized in that: The rotating shaft (12) includes a first constraint surface (121) in contact with the gear (13) and a second constraint surface (122) in contact with the door body (30), wherein the first constraint surface (121) limits the relative rotation between the rotating shaft (12) and the gear (13), and the second constraint surface (122) limits the relative rotation between the rotating shaft (12) and the door body (30).

10. The refrigeration device (100) according to claim 1, characterized in that: The open position is simultaneously located on a second side of the closed position, wherein the second side is on a plane perpendicular to the insertion direction, and is a side of the door (30) relative to the box (20).

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