Refrigerator

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a refrigerator. The inner door is arranged on the box body in an openable and closable manner; the outer door is arranged on the inner door in an openable and closable manner; the connecting piece is arranged on the inner door, and a shaft hole is formed in the connecting piece; a box body hinge and a door body hinge; wherein one end of the box body hinge is connected with the box body, one end of the door body hinge is connected with the outer door, the other end of the box body hinge and the other end of the door body hinge are arranged in the shaft hole and can rotate relative to the shaft hole, and the other end of the box body hinge can rotate relative to the other end of the door body hinge, or the other end of the door body hinge can rotate relative to the other end of the door body hinge. One of the other end of the box body hinge and the other end of the door body hinge is arranged in the shaft hole and can rotate relative to the shaft hole, and the other one is arranged on the outer side of the connecting piece in a sleeving mode and can rotate relative to the connecting piece. The outer door is matched with the door body hinge, the inner door is matched with the box body hinge to achieve independent movement of the outer door and the inner door, the rotating shafts of the outer door and the inner door are coaxial, the structure is simple, and the production speed is higher.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a refrigerator. Background Art

[0002] At present, in order to meet the needs of reducing cold air leakage and reducing energy consumption, refrigerators with two doors are launched on the market, that is, the cabinet is connected to the inner door, and the outer door is connected to the inner door. For such refrigerators, there is a demand for how to set the cabinet hinge and the door hinge to achieve independent movement of the inner door and the outer door.

[0003] The related technology discloses a refrigerator, including a box body, a main door and a sub-door, wherein the box body and the main door are pivotally connected via a first hinge, and the sub-door and the main door are pivotally connected via a second hinge.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] Although the related technology can realize the independent movement of the main door and the auxiliary door, the rotation axes of the main door and the auxiliary door are two axes, and the structure is complicated.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiment provides a refrigerator to achieve independent movement of an inner door and an outer door, and the refrigerator has a simple structure.

[0009] According to a first aspect of an embodiment of the present invention, a refrigerator is provided, comprising: a cabinet; an inner door, which is openable and closable and is arranged on the cabinet; an outer door, which is openable and closable and is arranged on the inner door; a connecting piece, which is arranged on the inner door, and the connecting piece is provided with an axial hole; a cabinet hinge and a door hinge; wherein, one end of the cabinet hinge is connected to the cabinet, and one end of the door hinge is connected to the outer door, and the other end of the cabinet hinge and the other end of the door hinge are both arranged in the axial hole and can rotate relative to the axial hole, and the other end of the cabinet hinge and the other end of the door hinge are both arranged in the axial hole and can rotate relative to the other end of the door hinge, or, one of the other end of the cabinet hinge and the other end of the door hinge is arranged in the axial hole and can rotate relative to the axial hole, and the other is sleeved on the outside of the connecting piece and can rotate relative to the connecting piece.

[0010] Optionally, the inner door is provided with a mounting groove, and the connecting piece is located in the mounting groove.

[0011] Optionally, the connection element is of a self-lubricating material.

[0012] Optionally, the box hinge includes: a box hinge shaft, which is inserted into the shaft hole and can rotate relative to the shaft hole or is sleeved on the outside of the connecting piece and can rotate relative to the connecting piece; a box hinge body, one end of which is connected to the box, and the other end is connected to the box hinge shaft; the door hinge includes: a door hinge shaft, which is inserted into the shaft hole and can rotate relative to the shaft hole or is sleeved on the outside of the connecting piece and can rotate relative to the connecting piece; a door hinge body, one end of which is connected to the outer door, and the other end is connected to the door hinge shaft.

[0013] Optionally, when the door hinge shaft and the box hinge shaft are both arranged in the shaft hole, the door hinge shaft is made of self-lubricating material.

[0014] Optionally, the inner door is provided with a first groove, the door hinge body is partially provided in the first groove, and the box hinge body is located on a side of the door hinge body away from the bottom wall surface of the first groove.

[0015] Optionally, a first gap L1 is provided between the box hinge body and the door hinge body.

[0016] Optionally, a second gap L2 is provided between the door hinge body and the bottom wall surface of the first groove, wherein L2≤L1.

[0017] Optionally, the door hinge body is connected to the surface of the outer door facing the inner door, or is connected to the top end surface or the bottom end surface of the outer door.

[0018] Optionally, when the door hinge body is connected to the top end surface or the bottom end surface of the outer door, the top end surface or the bottom end surface of the outer door is provided with a second groove, and the door hinge body is partially provided in the second groove.

[0019] The refrigerator provided by the embodiment of the present disclosure can achieve the following technical effects:

[0020] The outer door cooperates with the door hinge, and the outer door rotates relative to the inner door to realize the independent movement of the outer door; the inner door cooperates with the box hinge, and the inner door rotates relative to the box to realize the independent movement of the inner door. In addition, the box hinge is inserted into the shaft hole of the connecting piece or sleeved on the outside of the connecting piece, and the door hinge is inserted into the shaft hole of the connecting piece or sleeved on the outside of the connecting piece, that is, the rotation axis of the outer door and the inner door is coaxial. Compared with the related technology, the structure is simple and the production speed is faster.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of a refrigerator provided in Embodiment 1 of the present disclosure;

[0024] Figure 2 is a partial cross-sectional structural schematic diagram of a refrigerator provided in the first embodiment of the present disclosure;

[0025] Figure 3 is a partial cross-sectional structural schematic diagram of a refrigerator provided in the second embodiment of the present disclosure;

[0026] Figure 4 is a schematic structural diagram of the top surfaces of the inner door and the outer door provided in an embodiment of the present disclosure;

[0027] Figure 5 is a partially enlarged schematic diagram of a refrigerator provided by an embodiment of the present disclosure;

[0028] Figure 6 is a partially enlarged schematic diagram of another refrigerator provided by an embodiment of the present disclosure;

[0029] Figure 7 is a structural schematic diagram of a coaxial hinge limiting structure for a refrigerator in a door closing state provided by an embodiment of the present disclosure;

[0030] Figure 8 yes Figure 7 Schematic diagram of the structure without the hinge of the box;

[0031] Fig. 9 is a structural schematic diagram of an inner door open state of a coaxial hinge limiting structure for a refrigerator provided by an embodiment of the present disclosure;

[0032] Fig.10 yes Fig. 9 Schematic diagram of the structure without the hinge of the box;

[0033] Fig.11 is a structural schematic diagram of another coaxial hinge limiting structure for a refrigerator in an open state of an outer door provided by an embodiment of the present disclosure;

[0034] Fig.12 yes Fig.11 Schematic diagram of the structure without the hinge of the box;

[0035] Fig.13 is a schematic diagram of the structure of a fixing member provided in an embodiment of the present disclosure;

[0036] Fig.14It is a structural schematic diagram of a coaxial hinge limiting structure for a refrigerator provided in an embodiment of the present disclosure.

[0037] Reference numerals:

[0038] 1: refrigerator; 2: box body; 3: inner door; 31: mounting groove; 32: first groove;

[0039] 4: outer door; 41: second groove; 5: connecting piece; 51: shaft hole; 511: axis;

[0040] 6: box hinge; 61: box hinge shaft; 62: box hinge body; 63: first avoidance portion;

[0041] 7: door hinge; 71: door hinge shaft; 72: door hinge body; 73: hinge hole; 74: second avoidance portion;

[0042] 8: first gap; 9: second gap; 10: first limiting structure; 11: first limiting matching structure;

[0043] 12: fixing member; 121: second position limiting matching structure; 122: positioning structure;

[0044] 13: second limiting structure; 14: first preset angle; 15: second preset angle; 16: door closing stop; 17: third limiting matching structure; 18: protruding height of the first limiting structure; 19: gap. DETAILED DESCRIPTION

[0045] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0046] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate for the disclosed embodiments described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0047] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0048] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0049] Unless otherwise stated, the term "plurality" means two or more.

[0050] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0051] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0052] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0053] Combination Figures 1 to 3 As shown, the embodiment of the present disclosure provides a refrigerator 1, which includes a box body 2, an inner door 3 and an outer door 4. The inner door 3 is openable and closable and is arranged on the box body 2, for example, the inner door 3 is rotatably connected to the box body 2, and the outer door 4 is openable and closable and is arranged on the inner door 3, for example, the outer door 4 is rotatably connected to the inner door 3. The refrigerator 1 also includes a connector 5, which is arranged on the inner door 3 and has an axis hole 51. The refrigerator 1 also includes a box hinge 6 and a door hinge 7.

[0054] Among them, one end of the box hinge 6 is connected to the box 2, and one end of the door hinge 7 is connected to the outer door 4. Figure 2 As shown, the other end of the box hinge 6 and the other end of the door hinge 7 are both arranged in the shaft hole 51 (as shown in FIG. Figure 3As shown in the figure, both can rotate relative to the shaft hole 51, and the other end of the box hinge 6 can rotate relative to the other end of the door hinge 7, so that the inner door 3 and the outer door 4 can be opened and closed independently.

[0055] In this solution, the rotation of the door hinge 7 relative to the shaft hole 51 realizes the opening and closing of the outer door 4, and the rotation of the box hinge 6 relative to the shaft hole 51 realizes the opening and closing of the inner door 3. The other end of the box hinge 6 and the other end of the door hinge 7 are both arranged in the shaft hole 51, so that the rotation axis of the inner door 3 and the rotation axis of the outer door 4 coincide with each other, and are both the axis 511 of the shaft hole 51.

[0056] Or, if Figure 3 As shown, one of the other end of the box hinge 6 and the other end of the door hinge 7 is arranged in the shaft hole 51 and can rotate relative to the shaft hole 51, and the other is sleeved on the outside of the connecting member 5 and can rotate relative to the connecting member 5.

[0057] When the box hinge 6 is arranged in the shaft hole 51 and can rotate relative to the shaft hole 51, the inner door 3 can be opened and closed. When the door hinge 7 is arranged on the outside of the connecting member 5 and can rotate relative to the connecting member 5, the outer door 4 can be opened and closed.

[0058] When the door hinge 7 is arranged in the shaft hole 51 and can rotate relative to the shaft hole 51, the outer door 4 can be opened and closed. When the box hinge 6 is arranged on the outside of the connecting member 5 and can rotate relative to the connecting member 5, the inner door 3 can be opened and closed.

[0059] In this solution, no matter whether the box hinge 6 or the door hinge 7 is arranged in the shaft hole 51 , it is possible to achieve the coincidence of the rotation axis of the inner door 3 and the rotation axis of the outer door 4 , both of which are the axis 511 of the shaft hole 51 .

[0060] In the refrigerator 1 provided by the embodiment of the present disclosure, the outer door 4 cooperates with the door hinge 7, and the outer door 4 rotates relative to the inner door 3 to realize the independent movement of the outer door 4; the inner door 3 cooperates with the cabinet hinge 6, and the inner door 3 rotates relative to the cabinet 2 to realize the independent movement of the inner door 3. Moreover, the cabinet hinge 6 is inserted into the shaft hole 51 of the connecting member 5 or sleeved on the outside of the connecting member 5, and the door hinge 7 is inserted into the shaft hole 51 of the connecting member 5 or sleeved on the outside of the connecting member 5, that is, the rotation axes of the outer door 4 and the inner door 3 are coaxial, and compared with the related art, the structure is simple and the production speed is faster.

[0061] Optionally, the outer door 4 includes a handle, and the handle can drive the outer door 4 and the inner door 3 to move as a whole relative to the box body 2.

[0062] Alternatively, if Figure 4 As shown, the inner door 3 is provided with a mounting groove 31 , and the connecting member 5 is located in the mounting groove 31 .

[0063] Optionally, the connecting member 5 is made of self-lubricating material.

[0064] In this way, a connecting member 5 is added to the installation groove 31, and the connecting member 5 is made of self-lubricating material, which can avoid direct contact between the box hinge 6 and the installation groove 31 and / or direct contact between the door hinge 7 and the installation groove 31, reduce friction, and make the rotation of the inner door 3 and the outer door 4 smoother.

[0065] Specifically, taking the upper hinge of the box body or the upper hinge of the door body as an example, at this time, the upper hinge of the box body and the upper hinge of the door body are both arranged at the top of the box body 2, and the installation groove 31 is arranged at the top of the inner door 3 facing the direction of extension of the inner door 3; taking the lower hinge of the box body or the lower hinge of the door body as an example, at this time, the lower hinge of the box body and the lower hinge of the door body are both arranged at the bottom end of the box body 2, and the installation groove 31 is arranged at the bottom end of the inner door 3 facing the direction of extension of the inner door 3.

[0066] Optionally, the connecting member 5 is made of polyformaldehyde (POM).

[0067] POM has high mechanical strength, which is very close to metal, good wear resistance and self-lubrication, good electrical insulation, and low cost. Therefore, the connector 5 is designed to be made of POM material. Under the premise of ensuring mechanical strength close to that of metal, the friction between the connector 5 and the cabinet hinge 6, the door hinge 7 and the mounting groove 31 is smaller, and because the electrical insulation of the POM material is good, there is no need to worry about the risk of the connector 5 conducting electricity when the refrigerator 1 leaks electricity.

[0068] Optionally, the connecting piece 5 is made of polytetrafluoroethylene.

[0069] Polytetrafluoroethylene has a low friction coefficient, good self-lubrication and corrosion resistance. Therefore, the connector 5 is designed to be made of polytetrafluoroethylene, which has less friction with the box hinge 6, the door hinge 7 and the mounting groove 31, and the part of the connector exposed to the air is not easily corroded.

[0070] Embodiment 1:

[0071] Combination Figure 2 As shown, the box hinge 6 includes a box hinge shaft 61 and a box hinge body 62, wherein the box hinge shaft 61 is inserted into the shaft hole 51 and can rotate relative to the shaft hole 51, one end of the box hinge body 62 is fixedly connected to the box, and the other end of the box hinge body 62 is fixedly connected to the box hinge shaft 61. The door hinge 7 includes a door hinge shaft 71 and a door hinge body 72, the door hinge shaft 71 is inserted into the shaft hole 51 and can rotate relative to the shaft hole 51, one end of the door hinge body 72 is connected to the outer door 4, for example, fixedly connected, and the other end of the door hinge body 72 is fixedly connected to the door hinge shaft 71.

[0072] Optionally, a hinge hole 73 is provided on the surface of the door hinge shaft 71 facing away from the shaft hole 51 , and the box hinge shaft 61 is inserted into the hinge hole 73 .

[0073] The box hinge shaft 61 always remains stationary, and the outer door 4 drives the door hinge shaft 71 to rotate relative to the shaft hole 51 to open or close the outer door 4. The inner door 3 drives the shaft hole 51 and the hinge hole 73 to rotate relative to the box hinge shaft 61 as a whole, that is, the inner door 3 drives the connecting part 5 and the door hinge shaft 71 to rotate together to open or close the inner door 3.

[0074] Optionally, when the box hinge shaft 61 is inserted into the hinge hole 73, the door hinge shaft 71 is made of self-lubricating material.

[0075] When the box hinge shaft 61 is inserted into the hinge hole 73, the door hinge shaft 71 and the box hinge shaft 61 are in direct contact. At this time, the door hinge shaft 71 is designed to be a self-lubricating material, which can effectively reduce the friction between the hinge hole 73 and the box hinge shaft 61, making the rotation process of the inner door 3 smoother.

[0076] Alternatively, a box hinge hole is provided on the surface of the box hinge shaft 61 which faces away from the shaft hole 51, and the door hinge shaft 71 is inserted into the box hinge hole.

[0077] The box hinge shaft 61 always remains stationary, the outer door 4 drives the door hinge shaft 71 to rotate relative to the box hinge hole to open or close the outer door 4, and the inner door 3 drives the shaft hole 51 to rotate relative to the box hinge shaft 61 to open or close the inner door 3.

[0078] Optionally, when the door hinge shaft 71 is inserted into the box hinge hole, the box hinge shaft 61 is made of self-lubricating material.

[0079] When the door hinge shaft 71 is inserted into the box hinge hole, the door hinge shaft 71 and the box hinge shaft 61 are in direct contact. At this time, the box hinge shaft 61 is designed to be a self-lubricating material, which can effectively reduce the friction between the door hinge shaft 71 and the box hinge hole, making the rotation process of the outer door 4 smoother.

[0080] Optionally, the door hinge body 72 is made of metal and is connected to the door hinge shaft 71 made of self-lubricating material through an integrated injection molding process.

[0081] Optionally, the box hinge body 62 and the box hinge shaft 61 are fixedly connected by threads.

[0082] Or, optionally, the box hinge body 62 is made of metal, and is connected to the box hinge shaft 61 made of self-lubricating material through an integral injection molding process.

[0083] Optionally, the door hinge body 72 and the door hinge shaft 71 are fixedly connected by threads.

[0084] The box hinge shaft 61 always remains stationary, and the outer door 4 drives the door hinge shaft 71 to rotate relative to the shaft hole 51 to open or close the outer door 4, and the inner door 3 drives the connecting piece 5 and the door hinge shaft 71 to rotate relative to the box hinge shaft 61 to open or close the inner door 3.

[0085] Alternatively, if Figure 4 As shown, the inner door 3 is provided with a first groove 32 , the door hinge body 72 is partially provided in the first groove 32 , and the box hinge body 62 is located on the side of the door hinge body 72 away from the bottom wall of the first groove 32 .

[0086] Taking the case where the door hinge 7 and the box hinge 6 are arranged at the top of the box body 2 as an example, the top end surface of the inner door 3 is recessed to form a first groove 32 with an opening facing upward; taking the case where the door hinge 7 and the box hinge 6 are arranged at the bottom end of the box body 2 as an example, the bottom end surface of the inner door 3 is recessed to form a first groove 32 with an opening facing downward.

[0087] In this way, the door hinge body 72 is first installed in the first groove 32, and after the inner door 3 and the outer door 4 are assembled together, the inner door 3 and the outer door 4 are assembled to the box 2 by installing the box hinge 6, which is convenient for assembly line operation, has low assembly difficulty, and is faster. By setting the first groove 32 in the inner door 3, the door hinge 7 is located in the first groove 32, which prevents the door hinge 7 from protruding, and the visual effect is neater and more beautiful, and the height of the inner door 3 will not be increased due to the setting of the box hinge 6.

[0088] Optionally, combined Figure 5 and Figure 6 As shown, a first gap L1 is provided between the box hinge body 62 and the door hinge body 72 .

[0089] On the one hand, by adjusting the size of the first gap L1, the height of the inner door 3 can be adjusted so that the end face of the inner door 3 and the end face of the box body 2 remain in the same horizontal plane. On the other hand, the first gap L1 can also avoid friction between the door hinge body 72 and the box hinge body 62 during rotation.

[0090] Optionally, a second gap L2 is provided between the door hinge body 72 and the bottom wall surface of the first groove 32 , wherein L2 ≤ L1.

[0091] The second gap L2 is designed to avoid friction between the door hinge body 72 and the bottom wall of the first groove 32 during rotation. Since the height of the inner door 3 does not need to be adjusted by the second gap L2, L2 is designed to be less than L1, and the second gap L2 is designed to be lower, so that the overall center of gravity of the door hinge 7 is lower, and the door hinge 7 is more stable during rotation.

[0092] Optionally, the door hinge body 72 is connected to the surface of the outer door 4 facing the inner door 3, or the door hinge body 72 is connected to the top surface or the bottom surface of the outer door 4. For example, taking the case where the door hinge 7 and the box hinge 6 are arranged at the top of the box 2 as an example, the door hinge body 72 is connected to the top surface of the outer door 4 or the surface of the outer door 4 facing the inner door 3; taking the case where the door hinge 7 and the box hinge 6 are arranged at the bottom of the box 2 as an example, the door hinge body 72 is connected to the bottom surface of the outer door 4 or the surface of the outer door 4 facing the inner door 3.

[0093] In this way, the connection forms between the door hinge body 72 and the outer door 4 are various.

[0094] Optionally, the door hinge body 72 is fixedly connected to the outer door 4 by screws.

[0095] Optionally, combined Figure 4 As shown, when the door hinge body 72 is connected to the top end surface or the bottom end surface of the outer door 4, the top end surface or the bottom end surface of the outer door 4 is provided with a second groove 41, and the door hinge body 72 is partially provided in the second groove 41.

[0096] Taking the case where the door hinge 7 and the box hinge 6 are arranged at the top of the box body 2 as an example, the top end surface of the outer door 4 is recessed to form a second groove 41 with an opening facing upward; taking the case where the door hinge 7 and the box hinge 6 are arranged at the bottom end of the box body 2 as an example, the bottom end surface of the outer door 4 is recessed to form a second groove 41 with an opening facing downward.

[0097] In this way, by setting the second groove 41 on the top end surface or the bottom end surface of the outer door 4, the door hinge is embedded in the second groove 41, the visual effect is neater and more beautiful, and the height of the outer door 4 will not be increased due to the setting of the door hinge 7.

[0098] Combination Figures 7 to 12As shown, the embodiment of the present disclosure provides a coaxial hinge limiting structure for a refrigerator 1, including a door hinge 7, which is configured to connect the outer door 4 and the inner door 3 to open or close the outer door 4. The coaxial hinge limiting structure also includes a box hinge 6, which is configured to connect the inner door 3 and the box 2 to open or close the inner door 3, wherein the box hinge 6 is coaxially arranged with the door hinge 7, and the shaft hole 51 is located at the inner door 3. The coaxial hinge limiting structure also includes a first limiting structure 10 and a first limiting matching structure 11, wherein the first limiting structure 10 is arranged on the door hinge 7, and the first limiting matching structure 11 is arranged on the box hinge 6, and when the inner door 3 is opened to the first preset angle 14, the first limiting structure 10 conflicts with the first limiting matching structure 11 to limit the first limiting structure 10 from continuing to move beyond the first limiting matching structure 11. The coaxial hinge limiting structure also includes a second limiting structure 13 and a second limiting matching structure 121. The second limiting structure 13 is arranged on the door hinge 7, and the second limiting matching structure 121 is arranged on the inner door 3. When the outer door 4 is opened to the second preset angle 15, the second limiting structure 13 conflicts with the second limiting matching structure 121 to limit the second limiting structure 13 from continuing to move beyond the second limiting matching structure 121.

[0099] The coaxial hinge limiting structure for the refrigerator 1 provided by the embodiment of the present disclosure is adopted, and the first limiting structure 10 and the second limiting structure 13 are arranged on the door hinge 7, the first limiting matching structure 11 is arranged on the box hinge 6, and the second limiting matching structure 121 is arranged on the inner door 3. When the inner door 3 is opened to the first preset angle 14, the first limiting structure 10 conflicts with the first limiting matching structure 11 to limit the first limiting structure 10 from continuing to move beyond the first limiting matching structure 11, thereby realizing the limiting of the inner door 3; when the outer door 4 is opened to the second preset angle 15, the second limiting structure 13 conflicts with the second limiting matching structure 121 to limit the second limiting structure 13 from continuing to move beyond the second limiting matching structure 121, thereby realizing the limiting of the outer door 4. At the same time, the first limiting structure 10 and the second limiting structure 13 are assembled on one door hinge 7, which reduces the number of components, reduces the difficulty of installation, and improves the assembly speed.

[0100] Optionally, combined Figure 7 and Figure 8 As shown, along the opening direction of the inner door 3, the first limiting structure 10 and the second limiting structure 13 are arranged in sequence, the first limiting matching structure 11 and the second limiting matching structure 121 are arranged in sequence, and the central angle corresponding to the first limiting structure 10 and the first limiting matching structure 11 is greater than the central angle corresponding to the second limiting structure 13 and the second limiting matching structure 121.

[0101] It can be understood that the first limiting structure 10 and the first limiting matching structure 11 are on the same circumference, and the center of the circumference is located at the axis 511 of the shaft hole 51; the second limiting structure 13 and the second limiting matching structure 121 are on the same circumference, and the center of the circumference is located at the axis 511 of the shaft hole 51.

[0102] It can be understood that the central angle corresponding to the first limiting structure 10 and the first limiting matching structure 11, i.e., the first preset angle 14, and the central angle corresponding to the second limiting structure 13 and the second limiting matching structure 121, i.e., the second preset angle 15, are greater than the central angle corresponding to the second limiting structure 13 and the second limiting matching structure 121. Therefore, the first preset angle 14 is greater than the second preset angle 15. In this way, when the outer door 4 is opened to the second preset angle 15, the position of the outer door 4 is limited, but the first limiting structure 10 and the first limiting matching structure 11 used to limit the maximum opening angle of the inner door 3 have not yet conflicted, and the inner door 3 can continue to move. Therefore, the opening of the outer door 4 will not limit the opening angle of the inner door 3. Moreover, the opening angles of the inner door 3 and the outer door 4 do not need to be the same angle, which avoids the problem of the opening angles of the inner door 3 and the outer door 4 being mutually restricted when they are coaxial.

[0103] Optionally, the first preset angle 14 is m, and the second preset angle 15 is n, wherein 30°≤m≤150°, and 30°≤n≤150°.

[0104] 30°≤m≤150°, more specifically, m=40°, 50°, 60°, 70°, 80°, 90°, 100°, 110° or 120°.

[0105] 30°≤n≤150°, more specifically, n=40°, 50°, 60°, 70°, 80°, 90°, 100°, 110° or 120°.

[0106] Optionally, the distance between the first limiting structure 10 and the shaft hole 51 is smaller than the distance between the second limiting structure 13 and the shaft hole 51 .

[0107] Because the first position limiting matching structure 11 cooperates with the first position limiting structure 10 to limit the first position limiting structure 10 from continuing to move beyond the first position limiting matching structure 11, the closer the first position limiting structure 10 is set to the axial hole 51, the closer the first position limiting matching structure 11 is also to the axial hole 51. This can reduce the material area of ​​the box hinge 6 and save costs. The box hinge 6 also occupies a smaller installation space and is more beautiful overall.

[0108] Optionally, combined Figure 5 and Figure 8As shown, the door hinge 7 and the box hinge 6 are sequentially arranged in a direction away from the box 2, a first gap 8 is formed between the door hinge 7 and the box hinge 6, the second limiting structure 13 is arranged on the side of the door hinge facing the first gap 8, the second limiting matching structure 121 protrudes from the inner door 3 and is partially located in the first gap 8, and a gap 19 is formed between the second limiting matching structure 121 and the box hinge 6, as shown in FIG. Fig.14 As shown in L4.

[0109] In this way, a first gap 8 is left between the door hinge 7 and the box hinge 6 to facilitate the cooperation between the second limiting structure 13 and the second limiting matching structure 121, while reducing the friction generated when the door hinge 7 rotates relative to the box hinge 6.

[0110] Alternatively, if Figure 7 and Fig.14 As shown, the first limiting structure 10 is protruded on the surface of the door hinge 7 facing the box hinge 6, and the protruding height 18 of the first limiting structure (as shown in FIG. Fig.14 (as shown in L3 in the figure) is greater than the height of the first gap 8, and the first limiting matching structure 11 is arranged at the outer edge of the box hinge 6 and is in the same plane as the connection point of the box hinge 6.

[0111] In this way, the height of the first limiting structure 10 protruding from the door hinge 7 is greater than the height of the first gap 8, ensuring the effective cooperation between the first limiting structure 10 and the first limiting matching structure 11. When the inner door 3 rotates to the first preset angle 14, the first limiting structure 10 and the first limiting matching structure 11 can conflict with each other, so that the first limiting structure 10 will not pass through the first gap 8. The first limiting matching structure 11 is in the same plane as the connection between the box hinge 6 and the box hinge 6, rather than being protruded on the surface of the box hinge 6 facing away from the box 2. This design of being in the same plane can save space and be more beautiful; nor is it protruded on the surface of the box hinge 6 facing the door hinge 7. This design of being in the same plane can avoid affecting the rotation of the second limiting structure 13.

[0112] Optionally, the second limiting structure 13 is arranged at the outer edge of the door hinge 7 and is in the same plane as the connection point of the door hinge 7 .

[0113] The second limiting structure 13 is arranged at the outer edge of the door hinge 7 and is in the same plane as the connection with the door hinge 7, so as to facilitate the integral molding of the second limiting structure 13 and the door hinge 7, reduce the difficulty of assembling the second limiting structure 13 and the door hinge 7, and save costs.

[0114] Optionally, the second limiting structure 13 is protruded on the surface of the door hinge 7 facing the box hinge 6 , and the protruding height of the second limiting structure is smaller than the height of the first gap 8 .

[0115] In this way, the height of the second limiting structure 13 protruding from the door hinge 7 is less than the height of the first gap 8, ensuring that the second limiting structure 13 can rotate within the first gap 8 without interfering with the box hinge 6, thereby ensuring the effective cooperation between the second limiting structure 13 and the second limiting matching structure 121 to limit the maximum opening angle of the outer door 4.

[0116] Alternatively, if Figure 7 As shown, the outer edge of the box hinge 6 is provided with a first avoidance portion 63 for avoiding the first limiting structure 10 . When the inner door 3 is in the closed position, the first avoidance portion 63 is located between the first limiting structure 10 and the first limiting matching structure 11 .

[0117] During the opening process of the inner door 3, the first limiting structure 10 is avoided by the first avoiding portion 63, so that the first limiting structure 10 smoothly passes through the first avoiding portion 63 to reach the first limiting matching structure 11. At this time, the first limiting structure 10 conflicts with the first limiting matching structure 11, and the inner door 3 smoothly reaches the maximum door opening position.

[0118] Alternatively, if Fig.10 As shown, the outer edge of the door hinge 7 is provided with a second avoidance portion 74 for avoiding the second limiting matching structure 121 , and when the outer door 4 is in the closed position, the first avoidance portion 63 is located between the second limiting structure 13 and the second limiting matching structure 121 .

[0119] During the opening process of the outer door 4, the second avoidance portion 74 avoids the second limit matching structure 121, so that the second limit matching structure 13 smoothly reaches the second limit matching structure 121. At this time, the second limit matching structure 13 conflicts with the second limit matching structure 121, and the outer door 4 smoothly reaches the maximum door opening position.

[0120] Alternatively, if Figure 7 As shown, the coaxial hinge limit structure for the refrigerator 1 also includes a door closing stopper 16 and a third limit matching structure 17. The door closing stopper 16 is arranged on the inner door 3, the third limit matching structure 17 is arranged on the outer edge of the cabinet hinge 6, and the third limit matching structure 17 is arranged opposite to the first limit matching structure 11. When the inner door 3 is opened, the door closing stopper 16 rotates with the inner door 3 relative to the third limit matching structure 17.

[0121] It is understandable that the door closing stop 16 and the third limit matching structure 17 are separable and matching. When the door closing stop 16 and the third limit matching structure 17 are separated, the inner door 3 opens, and when the door closing stop 16 and the third limit matching structure 17 are matched, the inner door 3 closes.

[0122] In this way, when the door closing stopper 16 and the third limit matching structure 17 cooperate with each other, the inner door 3 is restricted from opening due to shaking when the inner door is closed, causing cooling loss and increasing energy consumption.

[0123] Optionally, one of the door closing stopper 16 and the third position limiting matching structure 17 is a groove, and the other is a protrusion, and the protrusion can be snap-fitted into the groove.

[0124] In this way, the door closing stopper 16 is engaged with the third limit matching structure 17 by engaging the protrusion with the groove, so as to limit the closing state of the inner door 3 and reduce the risk of the inner door 3 opening due to shaking.

[0125] Alternatively, if Fig.13 As shown, the coaxial hinge limiting structure for the refrigerator 1 further includes a fixing member 12, and the fixing member 12 is arranged on the inner door 3. The second limiting matching structure 121 is arranged on the surface of the fixing member 12 away from the box body 2.

[0126] Optionally, the fixing member 12 further comprises a positioning structure 122 , and the positioning structure 122 is arranged on a surface of the fixing member 12 which faces away from the box body 2 . The door closing stopper 16 is arranged on the positioning structure 122 .

[0127] It is understandable that the fixing member 12 is fixed at the position of the inner door 3, and the position between the door closing stopper 16 and the positioning structure 122 is fixed and does not rotate. In this way, when the inner door 3 rotates, the fixing member 12 is driven to rotate, and the positioning structure 122 located on the fixing member 12 rotates accordingly, thereby driving the door closing stopper 16 to rotate, so that the door closing stopper 16 can rotate relative to the third limiting matching structure 17.

[0128] In addition, by arranging both the positioning structure 122 and the second position-limiting matching structure 121 on the fixing member 12 , the number of components can be reduced, the difficulty of assembly can be lowered, and the speed of assembly can be increased.

[0129] Combination Figure 1 As shown, the embodiment of the present disclosure provides a refrigerator 1, which includes a box body 2, and the box body 2 defines a refrigeration space. The refrigerator 1 also includes an inner door 3, which is openable and closable and arranged on the box body 2 to open or close the refrigeration space. The refrigerator 1 also includes an outer door 4, which is openable and closable and arranged on the inner door 3. The refrigerator 1 also includes a coaxial hinge limiting structure for the refrigerator 1.

[0130] The refrigerator 1 provided by the embodiment of the present disclosure is adopted, and the first limiting structure 10 and the second limiting structure 13 are arranged on the door hinge 7, the first limiting matching structure 11 is arranged on the box hinge 6, and the second limiting matching structure 121 is arranged on the inner door 3. When the inner door 3 is opened to the first preset angle 14, the first limiting structure 10 conflicts with the first limiting matching structure 11 to limit the first limiting structure 10 from continuing to move beyond the first limiting matching structure 11, thereby realizing the limiting of the inner door 3; when the outer door 4 is opened to the second preset angle 15, the second limiting structure 13 conflicts with the second limiting matching structure 121 to limit the second limiting structure 13 from continuing to move beyond the second limiting matching structure 121, thereby realizing the limiting of the outer door 4. At the same time, the first limiting structure 10 and the second limiting structure 13 are assembled on one door hinge 7, which reduces the number of components, reduces the difficulty of installation, and improves the assembly speed.

[0131] Embodiment 2:

[0132] The difference from the first embodiment is that Figure 3 As shown, the box hinge shaft 61 is inserted into the shaft hole 51 and can rotate relative to the shaft hole 51, and the door hinge shaft 71 is sleeved on the outside of the connecting member 5 and can rotate relative to the connecting member 5.

[0133] The box hinge shaft 61 always remains stationary, the outer door 4 drives the door hinge shaft 71 to rotate relative to the connecting member 5 to open or close the outer door 4, and the inner door 3 drives the shaft hole 51 to rotate relative to the box hinge shaft 61 to open or close the inner door 3.

[0134] Embodiment three:

[0135] The difference from the first embodiment is that the box hinge shaft 61 is sleeved on the outside of the connecting member 5 and can rotate relative to the connecting member 5 , and the door hinge shaft 71 is inserted into the shaft hole 51 and can rotate relative to the shaft hole 51 .

[0136] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A refrigerator, characterized in that: include: Box; An inner door, which can be opened and closed, is arranged on the box body; The outer door can be opened and closed and is located inside the inner door; A connecting piece is arranged on the inner door, and the connecting piece is provided with an axis hole; Box hinges and door hinges; Among them, one end of the box hinge is connected to the box, and one end of the door hinge is connected to the outer door. The other end of the box hinge and the other end of the door hinge are both arranged in the shaft hole, both can rotate relative to the shaft hole, and the other end of the box hinge can rotate relative to the other end of the door hinge, or, one of the other end of the box hinge and the other end of the door hinge is arranged in the shaft hole and can rotate relative to the shaft hole, and the other is sleeved on the outside of the connecting piece and can rotate relative to the connecting piece.

2. The refrigerator according to claim 1, characterized in that: The inner door is provided with a mounting groove, and the connecting piece is located in the mounting groove.

3. The refrigerator according to claim 1, characterized in that: The connecting parts are made of self-lubricating material.

4. The refrigerator according to any one of claims 1 to 3, characterized in that: The cabinet hinges include: The box hinge shaft is inserted into the shaft hole and can rotate relative to the shaft hole or is sleeved on the outside of the connecting piece and can rotate relative to the connecting piece; The box hinge body has one end connected to the box and the other end connected to the box hinge shaft; Door hinges include: The door hinge shaft is inserted into the shaft hole and can rotate relative to the shaft hole or is sleeved on the outside of the connecting piece and can rotate relative to the connecting piece; The door hinge body has one end connected to the outer door and the other end connected to the door hinge shaft.

5. The refrigerator according to claim 4, characterized in that: When the door hinge shaft and the box hinge shaft are both arranged in the shaft hole, the door hinge shaft is made of self-lubricating material.

6. The refrigerator according to claim 4, characterized in that: The inner door is provided with a first groove, the door hinge body is partially arranged in the first groove, and the box hinge body is located on the side of the door hinge body away from the bottom wall surface of the first groove.

7. The refrigerator according to claim 6, characterized in that: A first gap L1 is provided between the box hinge body and the door hinge body.

8. The refrigerator according to claim 7, characterized in that: A second gap L2 is provided between the door hinge body and the bottom wall surface of the first groove, wherein L2≤L1.

9. The refrigerator according to claim 4, characterized in that: The door hinge body is connected to the surface of the outer door facing the inner door, or connected to the top end surface or the bottom end surface of the outer door.

10. The refrigerator according to claim 9, characterized in that: When the door hinge body is connected to the top end surface or the bottom end surface of the outer door, the top end surface or the bottom end surface of the outer door is provided with a second groove, and the door hinge body is partially arranged in the second groove.

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