Refrigerator

Abstract

The present application provides a kind of refrigerator, including cabinet, to open or close the door body of the cabinet, it is connected to the hinge assembly between the cabinet and the door body;The hinge assembly includes mutually matched first shaft body, first groove body and mutually matched second shaft body, second groove body, in the process of rotating opening from the closed state of the door body, the first shaft body moves in the first groove body, the second shaft body moves in the second groove body, drives the translation of the door body;The hinge assembly further includes the auxiliary structure between the cabinet and the door body, in the initial stage of rotating opening from the closed state of the door body, the auxiliary structure is used to assist door opening to promote the first shaft body to move in the first groove body, while the second shaft body moves in the second groove body;Make door body can be smoothly opened.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment, and more particularly to a refrigerator that allows the door to open and close smoothly. Background Technology

[0002] For built-in refrigerators, it is best if, after embedding the refrigerator into the cabinet, the front wall of the refrigerator door is flush with the front end of the cabinet, and the gap between the refrigerator and the cabinet is small, so that the refrigerator and the cabinet are integrated and the overall effect is aesthetically pleasing. However, for this type of built-in refrigerator, when the door rotates around a single axis to open, the rotating end of the door will protrude beyond the outside of the cabinet, which can easily cause interference with the cabinet.

[0003] Some existing refrigerators incorporate a dual-axis, dual-slot structure between the door and the cabinet body. This allows the door to move along a preset trajectory during rotation, preventing interference between the door and the cabinet. For refrigerators with this structure, both axes must move simultaneously within their corresponding slots for the door to open smoothly. However, in the initial stage of opening, interference forces between the axes and the slot walls make it difficult for both axes to move simultaneously along the preset trajectory, resulting in a difficult-to-open door or excessive force that could damage the axes. Summary of the Invention

[0004] The purpose of this invention is to provide a refrigerator that allows the door to open and close smoothly.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a refrigerator, comprising a cabinet, a door for opening or closing the cabinet, and a hinge assembly connecting the cabinet and the door; the hinge assembly includes a first shaft and a first groove that cooperate with each other, and a second shaft and a second groove that cooperate with each other. During the process of the door rotating open from the closed state, the first shaft moves within the first groove, and the second shaft moves within the second groove, driving the door to translate; the hinge assembly further includes an auxiliary structure disposed between the cabinet and the door. In the initial stage of the door rotating open from the closed state, the auxiliary structure assists in opening the door to cause the first shaft to move within the first groove, while the second shaft moves within the second groove.

[0006] As a further improvement of the present invention, the auxiliary structure includes a first gear disposed on the door body and a second gear disposed on the housing body. The first gear has meshing teeth, and the meshing teeth have a first meshing surface away from the rotating end of the door body. The second gear has a first guide tooth located on the side of the meshing teeth away from the rotating end, and the first guide tooth has a first guide surface toward the rotating end of the door body. In the initial stage when the door body rotates open from the closed state, the first meshing surface moves along the first guide surface to cause the first shaft to move in the first groove, while the second shaft moves in the second groove.

[0007] As a further improved technical solution of the present invention, the meshing tooth has a second meshing surface facing the rotating end of the door body, and the second gear also has a second guide tooth located on the side of the meshing tooth near the rotating end, and the second guide tooth has a second guide surface away from the rotating end of the door body; in the final stage of the door body rotating and closing, the second meshing surface moves along the second guide surface to cause the first shaft to move in the first groove, and at the same time the second shaft moves in the second groove to cause the door body to rotate and close to the closed state.

[0008] As a further improvement of the present invention, the first shaft is located on the side of the second shaft away from the housing; the auxiliary structure is used to drive the first shaft to move along the first groove.

[0009] As a further improved technical solution of the present invention, the first shaft and the second shaft are located in the housing, and the first groove and the second groove are located in the door; the second gear is fixed on the first shaft.

[0010] As a further improved technical solution of the present invention, the hinge assembly further includes a third shaft disposed on one of the housing and the door, and a slot disposed on the other of the housing and the door and located on the moving path of the third shaft. After the door is opened to a preset opening angle, the third shaft is engaged in the slot, and the door rotates in place around the third shaft.

[0011] As a further improvement of the present invention, the hinge assembly includes a hinge plate fixed to the box body, a fixing block fixed to the door body, a slot provided on the edge of the hinge plate, and a third shaft provided on the fixing block.

[0012] As a further improved technical solution of the present invention, the first groove is located on the side of the second groove away from the box body, along the direction towards the rotating end of the door body. The first groove has a first segment and a second segment connected together. The second segment is an arc-shaped groove centered on the third shaft located in the slot. The end of the second groove near the rotating end of the door body has an inlet and outlet. When the door body is opened from the closed state to the preset opening angle, the first shaft moves within the first segment, the second shaft moves within the second groove body, and the door body translates. When the door body continues to rotate and open from the preset opening angle, the third shaft is located within the slot body, the second shaft disengages from the inlet and outlet of the second groove body, the first shaft moves within the second segment, and the door body rotates in place around the third shaft as the axis.

[0013] As a further improvement of the present invention, the hinge assembly further includes a stop block disposed on one of the housing and the door, and a stop groove disposed on the other of the housing and the door and located on the moving path of the stop block. The stop block and the stop groove cooperate to limit the maximum opening angle of the door.

[0014] As a further improvement of the present invention, the stop block is non-circular, and the shape of the stop groove is adapted to the stop block.

[0015] The beneficial effects of the present invention are as follows: In the refrigerator of the present invention, by additionally setting an auxiliary structure to assist in opening the door, the first shaft can move along the first groove according to a preset trajectory and the second shaft can move along the second groove according to a preset trajectory in the initial stage of the door opening, thereby enabling the door to open smoothly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a refrigerator according to a specific embodiment of the present invention (the door is in the closed state);

[0017] Figure 2 yes Figure 1 The image shows a schematic top view of the refrigerator (with the door closed).

[0018] Figure 3 yes Figure 1 The refrigerator shown is a schematic top view (in the initial stage of the door rotating open from the closed state);

[0019] Figure 4 yes Figure 1 The schematic top view of the refrigerator shown (door from) Figure 3 (Continue to rotate towards the preset opening angle from the shown opening angle);

[0020] Figure 5 yes Figure 1 The refrigerator shown is a schematic top view (the door rotates open from the preset opening angle to the maximum opening angle).

[0021] Figure 6 yes Figure 1 The refrigerator shown is a schematic top view (the door rotates closed to its final stage). Detailed Implementation

[0022] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. Please refer to the accompanying drawings for further details. Figures 1-6 The illustrations shown represent preferred embodiments of the present invention, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. However, it should be noted that these embodiments are not intended to limit the present invention, and any equivalent modifications or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are within the scope of protection of the present invention.

[0023] In the various illustrations of this invention, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structures or parts; therefore, only the basic structure of the subject matter of this invention is used to illustrate the invention.

[0024] Furthermore, terms such as "left," "right," "front," and "back," used herein to indicate spatial relative positions, are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms "spatial relative positions" may be intended to include different orientations of the equipment in use or operation other than those shown in the figures. The equipment may be oriented in other ways (rotated 90 degrees or otherwise), and the spatially related descriptive terms used herein shall be interpreted accordingly.

[0025] Please refer to Figures 1-5 The diagram shown is a schematic representation of a refrigerator 10 according to a specific embodiment of the present invention. The refrigerator 10 is embedded within a cabinet. It should be understood that the refrigerator 10 described herein is not necessarily embedded within a cabinet; it can be used independently or embedded in a wall, etc.

[0026] The refrigerator 10 includes a cabinet 1, a door 2 for opening and closing the cabinet 1, and a hinge assembly 3 connecting the cabinet 1 and the door 2. The hinge assembly 3 rotatably connects the door 2 to the cabinet 1 and enables the door 2 to translate along a preset trajectory during rotation, thereby avoiding collision between the door 2 and the cabinet.

[0027] It should be emphasized that the structure in this embodiment is not only applicable to the refrigerator 10 with hinge assembly 3, but also applicable to other scenarios, such as cabinets, wine cabinets, wardrobes, etc. This invention is illustrated by taking the refrigerator 10 embedded in a cabinet as an example, but it is not limited thereto.

[0028] Combination Figure 2 As shown, the box body 1 has a box opening 11 that cooperates with the door body 2 and a pivot side that is rotatably connected to the door body 2. The direction from the center of the box body 1 toward the opening is the first direction X, and the direction from the center of the box body 1 away from the pivot side is the second direction Y.

[0029] Specifically, when the hinge assembly 3 is located on the right side of the refrigerator 10, the pivot side refers to the right side of the cabinet 1, the first direction X is the direction of the refrigerator 10 from back to front, and the second direction Y is the direction from right to left. When the hinge assembly 3 is located on the left side of the refrigerator 10, the pivot side refers to the left side of the cabinet 1, the first direction X is the direction of the refrigerator 10 from back to front, and the second direction Y is the direction from left to right.

[0030] Furthermore, the hinge assembly 3 includes a first shaft 31 and a first groove 32 that cooperate with each other, and a second shaft 33 and a second groove 34 that cooperate with each other. During the opening of the door 2, the first shaft 31 moves in the first groove 32, and the second shaft 33 moves in the second groove 34 to drive the door 2 to translate along a preset trajectory, thereby avoiding collision between the door 2 and the cabinet.

[0031] In this invention, the door body 2 is driven to rotate and translate along a preset trajectory by the cooperation of two axes (first axis 31 and second axis 33) and two grooves (first groove 32 and second groove 34). Compared with single-axis hinges, it does not require high installation accuracy, which can greatly reduce design costs and installation difficulty.

[0032] Specifically, the first shaft 31 is located in one of the housing 1 and the door 2, the first groove 32 is located in the other of the housing 1 and the door 2, the second shaft 33 is located in one of the housing 1 and the door 2, and the second groove 34 is located in the other of the housing 1 and the door 2.

[0033] In other words, the distribution of the hinge assembly 3 can include various cases. In the first example, the first shaft 31 and the second shaft 33 are located in the housing 1, and the first groove 32 and the second groove 34 are located in the door 2. In the second example, the first shaft 31 and the second shaft 33 are located in the door 2, and the first groove 32 and the second groove 34 are located in the housing 1. In the third example, the first shaft 31 and the second groove 34 are located in the housing 1, and the first groove 32 and the second shaft 33 are located in the door 2. In the fourth example, the first shaft 31 and the second groove 34 are located in the door 2, and the first groove 32 and the second shaft 33 are located in the housing 1.

[0034] In one specific embodiment, taking the first example, the first shaft 31 and the second shaft 33 are located in the housing 1, and the first groove 32 and the second groove 34 are located in the door 2.

[0035] Specifically, the hinge assembly 3 further includes a hinge plate 35 fixed to the housing 1 and a movable hinge component fixed to the door 2. In the first example, the first shaft 31 and the second shaft 33 protrude from the hinge plate 35, and the first groove 32 and the second groove 34 are provided on the side of the movable hinge component facing the hinge plate 35.

[0036] It is understood that the movable hinge component can be detachably connected to the door trim or integrally formed with the door trim.

[0037] Combination Figures 2-4 As shown, during the process of the door 2 rotating open from the closed state to the preset opening angle, the hinge assembly 3 drives the door 2 to translate along a first preset trajectory. The first preset trajectory is set to move away from the housing 11 along the first direction X and away from the pivot side along the second direction Y. When the door 2 continues to rotate open from the preset opening angle, the door 2 rotates in place to further increase the opening degree of the door 2, making it easier for the user to retrieve items.

[0038] Here, during the process of the door 2 rotating from the closed state to the preset opening angle, the door 2 first moves away from the cabinet 1 along the first direction X while simultaneously moving away from the pivot side along the second direction Y. That is, the door 2 moves forward away from the cabinet 1 and away from the cabinet located on the pivot side. On the one hand, the hinge assembly 3 assists in separating the door 2 from the cabinet 1, thereby improving the smoothness of opening the door. At the same time, the displacement generated by the door 2 along the second direction Y during rotation cancels out the part of the door 2 protruding from the cabinet 1 during rotation, thereby avoiding interference between the door 2, the cabinet 1, and the cabinet during the opening process. This is suitable for scenarios with limited space, such as the built-in refrigerator 10.

[0039] Specifically, the door 2 includes a rear wall 21 that cooperates with the opening 11, a front wall 22 opposite to the rear wall 21, and a rotating end 23 that is always located between the rear wall 21 and the front wall 22 and on the pivot side of the box 1. It is understood that during the process of the door 2 rotating open from the closed state, the distance between the junction of the rear wall 21 and the rotating end 23 and the box 1 first decreases and then increases. During the process of the door 2 rotating open from the closed state to a preset opening angle, the hinge assembly 3 drives the door 2 forward away from the box 1, which also avoids interference between the junction of the rear wall 21 and the rotating end 23 and the box 1.

[0040] Furthermore, the first groove 32 is located on the side of the second groove 34 away from the housing 1, that is, the first groove 32 is a short groove and the second groove 34 is a long groove. Along the direction towards the rotating end 23 of the door 2, the first groove 32 has an initial position and a first segment 321 extending from the initial position towards the rotating end 23; the second groove 34 has a first position and a groove body extending from the first position towards the rotating end 23. When the door 2 is in the closed state, the first shaft 31 is located at the initial position, and the second shaft 33 is located at the first position. During the process of opening the door 2 from the closed state to the preset opening angle, the first shaft 31 moves along the first segment 321, and the second shaft 33 moves along the second groove 34, causing the door 2 to translate along the first preset trajectory, thus opening the door 2.

[0041] Specifically, along the direction towards the rotating end 23 of the door 2, the first segment 321 is a concave arc extending away from the front wall and towards the rotating end 23, and the second groove 34 is a convex arc extending away from the front wall and towards the rotating end 23. The length and curvature of the concave and convex arcs are not specifically limited here; the specific length and curvature of each segment of the first groove 32 and the second groove 34 are only required to allow the door 2 to translate along a preset trajectory during the rotational opening process.

[0042] Furthermore, combined Figure 3 As shown, the hinge assembly 3 also includes an auxiliary structure disposed between the housing 1 and the door 2. In the initial stage when the door 2 rotates open from the closed state, the auxiliary structure is used to assist in opening the door so that the first shaft 31 is disengaged from the initial position and moves along the first segment 321, while driving the second shaft 33 to disengage from the first position and move along the second groove 34, so that the door 2 can be opened smoothly and the stability of the door 2 opening is enhanced.

[0043] Combination Figure 2 ,3 As shown, in this embodiment, the auxiliary structure includes a first gear 6 disposed on the door body 2 and a second gear 7 disposed on the housing 1. The first gear 6 has a meshing tooth 61, and the meshing tooth 61 has a first meshing surface 611 away from the rotating end 23 of the door body 2. The second gear 7 has a first guide tooth 71 located on the side of the meshing tooth 61 away from the rotating end 23, and the first guide tooth 71 has a first guide surface 711 facing the rotating end 23 of the door body 2. In the initial stage of the door body 2 rotating open from the closed state, the first meshing surface 611 moves along the first guide surface 711 to cause the first shaft 31 to disengage from the initial position, and at the same time, the second shaft 33 disengages from the first position, so that the first shaft 31 and the second shaft 33 can move within their respective corresponding slots, allowing the door body 2 to open smoothly.

[0044] Furthermore, the meshing tooth 61 has a second meshing surface 612 facing the rotating end 23 of the door body 2, and the second gear 7 also has a second guide tooth 72 located on the side of the meshing tooth 61 near the rotating end 23, the second guide tooth 72 having a second guide surface 721 away from the rotating end 23 of the door body 2. Figure 6 As shown, in the final stage of the door body 2 rotating and closing, the second engagement surface 612 moves along the second guide surface 721 to cause the first shaft 31 to move towards the initial position, while the second shaft 33 moves towards the first position, causing the door body to rotate and close to the closed state, which is relatively stable.

[0045] It is known that when the door 2 is in the closed state, the meshing tooth 61 meshes between the first guide tooth 71 and the second guide tooth 72.

[0046] In this embodiment, during the initial stage of the door 2 rotating open from the closed state, the auxiliary structure drives the first shaft 31 to disengage from the initial position and move along the first segment 321, thereby causing the second shaft 33 to move along the second groove 34, so that the door 2 translates along the first preset trajectory while rotating open. Of course, this is not a limitation; in other embodiments, the auxiliary structure can also be configured to drive the second shaft 33 to disengage from the first position and move along the second groove 34, thereby causing the first shaft 31 to disengage from the initial position and move along the first segment 321, so that the door 2 translates along the first preset trajectory while rotating open.

[0047] Specifically, the second gear 7 is fixed to the first shaft, simplifying the configuration of the auxiliary structure. However, this is not a limitation.

[0048] Furthermore, the hinge assembly 3 also includes a third shaft 36 disposed on one of the housing 1 and the door 2, and a slot 37 disposed on the other of the housing 1 and the door 2 and located on the moving path of the third shaft 36. After the door 2 is opened to the preset opening angle, the third shaft 36 is engaged in the slot 37, and the door 2 rotates in place around the third shaft 36. This enhances the stability of the door 2 during rotation.

[0049] In one specific embodiment, the third shaft 36 is disposed on the door body 2, and the slot 37 is disposed on the housing 1. During the process of the door body 2 rotating open, the third shaft 36 moves with the door body 2. When the door body 2 rotates open to a preset angle, the third shaft 36 is engaged in the slot 37, so that the door body 2 can rotate around the third shaft 36 in place.

[0050] Of course, this is not the only option. In other embodiments, the third shaft 36 may also be located on the housing 1, and the slot 37 may be located on the door 2.

[0051] Specifically, the hinge assembly 3 further includes a fixing block 4 fixed to the door body 2, the third shaft 36 is disposed on the fixing block 4, and the slot 37 is formed on the edge of the hinge plate 35, simplifying the structure of the hinge assembly 3.

[0052] It is known that the shape of the slot 37 is set as an open arc-shaped slot 37 that matches the cross-sectional circle of the third shaft 36, so that the third shaft 36 can rotate within the slot 37.

[0053] Furthermore, the first groove 32 also has a second section 322 connected to the first section 321. The second section 322 is an arc-shaped groove centered on the third shaft 36 located within the slot 37. The second groove 34 has an entrance / exit 341 at one end near the rotating end 23 of the door 2. As the door 2 continues to rotate and open from a preset opening angle, the third shaft 36 is located within the slot 37, the second shaft 33 disengages from the entrance / exit 341 from the second groove 34, the first shaft 31 moves within the second section 322, and the door 2 rotates in place around the third shaft 36.

[0054] The hinge assembly 3 of the present invention, by shortening the length of the second groove 34 and additionally providing a cooperating third shaft 36 and a slot 37, enables the door 2 to stably rotate in place during the process of continuing to rotate and open from the preset opening angle, and also reduces the size of the hinge assembly 3.

[0055] It is understood that in the embodiment where both the first groove 32 and the third shaft 36 are provided on the door body 2, the second segment 322 is an arc-shaped groove with the third shaft 36 as the center. During the process of the door body 2 continuing to rotate and open from the preset opening angle, the first shaft 31 moves within the second segment 322, and the door body 2 rotates in place with the third shaft 36 as the axis.

[0056] Furthermore, the door body 2 has a mounting surface for mounting the hinge assembly 3. One of the first groove 32 and the second groove 34 is formed by a protruding strip 5 protruding from the mounting surface, and the other is recessed from the mounting surface toward the interior of the door body 2. It is understood that in the embodiment with the movable hinge component, the mounting surface refers to the side of the movable hinge component facing the hinge plate 35, which can reduce the contact area between the movable hinge component and the hinge plate 35, reduce friction, lower noise, and facilitate the opening and closing of the door body 2.

[0057] Specifically, the second groove 34 is formed by a protruding strip 5 protruding from the mounting surface, and the first groove 32 is recessed from the mounting surface toward the interior of the door body 2. It is understood that the first groove 32 is relatively short, and the recessed first groove 32 has a relatively small impact on the strength of the movable hinge component. However, this is not a limitation.

[0058] Furthermore, the bottom of the first groove 32 is arc-shaped, and the end of the first shaft 31 extending into the first groove 32 is spherical, matching the bottom of the groove. This reduces interference between the first shaft 31 and the first groove 32, enhances the smoothness of relative movement between them, and facilitates the opening and closing of the door 2.

[0059] Furthermore, the hinge assembly 3 also includes a stop block 38 disposed on one of the cabinet 1 and the door 2, and a stop groove 39 disposed on the other of the cabinet 1 and the door 2 and located on the moving path of the stop block 38. The stop block 38 and the stop groove 39 cooperate to limit the maximum opening angle of the door 2. Compared with the existing refrigerator 10, which directly limits the maximum opening angle of the door 2 through the cooperation between the groove and the shaft in the double shaft double groove, in this invention, by additionally setting the stop block 38 and the stop groove 39 to limit the maximum opening angle of the door 2, collisions between the shaft and the groove are avoided, noise is reduced, and damage to the shaft is prevented.

[0060] In one specific embodiment, the stop groove 39 is provided on the edge of the hinge plate 35, and the stop block 38 is provided on the fixing block 4. This simplifies the structure of the hinge assembly 3. Of course, it is not limited to this.

[0061] Furthermore, the stop block 38 is non-circular, and the shape of the stop groove 39 is adapted to the stop block 38. After the stop block 38 enters the stop groove 39, it restricts the door body 2 from continuing to rotate. It can be seen that because the stop block 38 is non-circular, the door body 2 cannot continue to rotate around the stop block 38 as the center. Thus, the door body 2 can be opened to the maximum opening angle and cannot continue to rotate. It can also prevent the third shaft 36 from disengaging from the slot 37, thereby enhancing the stability of the door body 2 during movement.

[0062] In summary, the refrigerator 10 of the present invention, by additionally providing an auxiliary structure to assist in opening the door, in the initial stage of the door 2 rotating open, the auxiliary structure is used to cause the first shaft 31 to disengage from its initial position and move along the first groove 32, thereby causing the second shaft 33 to disengage from its first position and move along the second groove 34, so that the door 2 can be opened smoothly.

[0063] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0064] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A refrigerator, comprising a cabinet, a door for opening or closing the cabinet, and a hinge assembly connecting the cabinet and the door; the hinge assembly includes a first shaft and a first groove that cooperate with each other, and a second shaft and a second groove that cooperate with each other; during the process of the door rotating open from a closed state, the first shaft moves within the first groove, and the second shaft moves within the second groove, driving the door to translate; characterized in that: The hinge assembly also includes an auxiliary structure disposed between the housing and the door; The auxiliary structure includes a first gear on the door body and a second gear on the housing body. The first gear has meshing teeth, and the meshing teeth have a first meshing surface away from the rotating end of the door body. The second gear has a first guide tooth located on the side of the meshing teeth away from the rotating end, and the first guide tooth has a first guide surface toward the rotating end of the door body. In the initial stage of the door rotating open from the closed state, the first engagement surface moves along the first guide surface to cause the first shaft to move in the first groove, while the second shaft moves in the second groove. The hinge assembly further includes a third shaft disposed on one of the housing and the door, and a slot disposed on the other of the housing and the door and located on the movement path of the third shaft. The first slot is located on the side of the second slot away from the housing, along the direction towards the rotating end of the door. The first slot has a first segment and a second segment connected together. The second segment is an arc-shaped groove centered on the third shaft located in the slot. The end of the second slot near the rotating end of the door has an inlet and outlet. When the door is opened from the closed state to a preset opening angle, the first shaft moves within the first segment, the second shaft moves within the second slot, and the door translates. When the door continues to rotate open from the preset opening angle, the third shaft is located within the slot, the second shaft disengages from the second slot through the inlet and outlet, the first shaft moves within the second segment, and the door rotates in place around the third shaft.

2. The refrigerator as described in claim 1, characterized in that: The meshing teeth have a second meshing surface facing the rotating end of the door body, and the second gear also has a second guide tooth located on the side of the meshing teeth near the rotating end, the second guide tooth having a second guide surface away from the rotating end of the door body; in the final stage of the door body rotating and closing, the second meshing surface moves along the second guide surface to cause the first shaft to move in the first groove, and at the same time the second shaft moves in the second groove, causing the door body to rotate and close to the closed state.

3. The refrigerator as described in claim 1 or 2, characterized in that: The first shaft is located on the side of the second shaft away from the housing; the auxiliary structure is used to drive the first shaft to move along the first groove.

4. The refrigerator as described in claim 3, characterized in that: The first shaft and the second shaft are located in the housing, and the first groove and the second groove are located in the door; the second gear is fixed to the first shaft.

5. The refrigerator as described in claim 1, characterized in that: The hinge assembly includes a hinge plate fixed to the housing and a fixing block fixed to the door. The slot is located on the edge of the hinge plate, and the third shaft is located on the fixing block.

6. The refrigerator as described in claim 1, characterized in that: The hinge assembly further includes a stop block disposed on one of the housing and the door, and a stop groove disposed on the other of the housing and the door and located on the moving path of the stop block, wherein the stop block and the stop groove cooperate to limit the maximum opening angle of the door.

7. The refrigerator as described in claim 6, characterized in that: The stop block is non-circular, and the shape of the stop groove is adapted to the stop block.

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