refrigerator

Abstract

The present invention relates to a refrigerator, which includes a cabinet, an inner door, an outer door and a self-locking device, wherein the self-locking device includes a slider, a lock hook and an elastic reset member; the slider is slidably connected to the inner door along a front-to-rear direction; the lock hook is slidably connected to the inner door, and the lock hook and the slider are slidably matched and transmission-connected; when the inner door is opened, the elastic reset member can drive the slider to slide toward the back side of the inner door, and the lock hook synchronously slides and protrudes from the front side of the inner door to be interlocked with the outer door; or the elastic reset member can directly drive the lock hook to slide in the direction of interlocking with the outer door to be interlocked with the outer door, thereby connecting the outer door and the inner door as a whole and preventing them from being thrown off. At the same time, when the inner door is closed, the rear end of the slider is squeezed and causes the slider to slide toward the front side of the inner door, causing the lock hook to synchronously slide in the opposite direction and separate from the outer door, thereby enabling the outer door to be opened and closed independently, thereby improving the convenience of using the cabinet door and enhancing the user experience.

Description

Technical Field

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

[0002] A refrigerator is an essential low-temperature storage container in people's daily lives. A refrigerator generally uses a box body to store food, and a door body is used to open or close the box body for taking out and putting food.

[0003] Traditional refrigerator doors are typically single-layer. Opening a single-layer door exposes all food inside the refrigerator compartment to the elements, easily leading to cooling loss. Some refrigerators use double-layer doors, but these have structural flaws. When the inner door is opened, the outer layer can easily be flung open, resulting in a poor user experience. Summary of the Invention

[0004] The object of the present invention is to provide a refrigerator to optimize the door structure of the refrigerator in the related art and improve the performance of the refrigerator.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] According to one aspect of the present invention, there is provided a refrigerator, which comprises: a box body, wherein a first storage space is provided therein; an inner door body rotatably arranged on the front side of the box body and used for opening and closing the first storage space; a second storage space is recessed on the front side surface of the inner door body; an outer door body rotatably overlapped on the front side of the inner door body, and the outer door body is used for opening and closing the second storage space; a self-locking device comprises a slider, a lock hook and an elastic reset member; the slider is slidably connected to the inner door body along the front-to-back direction and can protrude from the back side of the inner door body; the lock hook is slidably connected to the inner door body, and the lock hook and the slider are slidably matched and transmission-connected; The elastic return member is provided on the inner door body; wherein, when the slider slides toward the back side of the inner door body and protrudes out of the back side of the inner door body, the lock hook slides synchronously and protrudes out of the front side of the inner door body to engage with the outer door body; when the slider slides toward the front side of the inner door body, the lock hook slides synchronously in the opposite direction and separates from the outer door body; when the inner door body is closed, the rear end of the slider can be squeezed and force the slider to slide toward the front side of the inner door body; when the inner door body is opened, the elastic return member can drive the slider to slide toward the back side of the inner door body, or drive the lock hook to slide in the direction of engaging with the outer door body.

[0007] In some embodiments of the present application, the refrigerator includes a second hinge; the rear end of the second hinge is fixed to the inner door body, the front end of the second hinge protrudes from the front side of the inner door body, and is rotatably connected to the outer door body; the slider, the lock hook and the elastic return member are all arranged on the second hinge.

[0008] In some embodiments of the present application, a receiving cavity is provided inside the second hinge, and the receiving cavity extends to the front end of the second hinge and protrudes out of the front side of the inner door body; a first through hole is provided on the back side of the second hinge, and the first through hole is connected to the receiving cavity; the slider is slidably connected in the receiving cavity, and the rear end of the slider can extend out of the first through hole and protrude out of the back side of the inner door body; a second through hole is provided on the side wall of the front end of the second hinge facing the outer door body, and the second through hole is connected to the receiving cavity; the lock hook is slidably connected in the receiving cavity, and the front end of the lock hook can extend out of the second through hole to engage with the outer door body.

[0009] In some embodiments of the present application, the slider includes a main body and a top column protruding from the back side of the main body; the main body is movably arranged in the receiving cavity; the top column is passed through the first through hole and protrudes from the back side of the second hinge, and the top column can slide back and forth along the first through hole and drive the main body to slide back and forth in the receiving cavity.

[0010] In some embodiments of the present application, a positioning groove is recessed in the main body, and the extension direction of the positioning groove is consistent with the extension direction of the top column; a retaining rib is convexly provided in the second hinge, and the retaining rib extends into the positioning groove; the elastic return member is a compression spring, and the compression spring is arranged in the positioning groove, one end of the compression spring is abutted against the end of the positioning groove close to the top column, and the other end of the compression spring is abutted against the retaining rib, and the compression spring can drive the main body to slide backward along the axial direction of the first through hole.

[0011] In some embodiments of the present application, the slider also includes a support column arranged in the positioning slot, the support column extends from the end of the positioning slot close to the top column to the other end, and there is a gap between the support column and the retaining rib; the compression spring is sleeved on the support column.

[0012] In some embodiments of the present application, the main body is provided with an obliquely extending guide groove, the lock hook is provided with a guide protrusion that slides with the guide groove, and the extension directions of the guide groove and the guide protrusion are both set at an angle to the axis of the top column, and the angle is an acute angle; when the top column slides back and forth along the first through hole, the guide protrusion slides back and forth in the guide groove, and causes the lock hook to slide back and forth in the receiving cavity.

[0013] In some embodiments of the present application, a guide rib extending along the left and right directions of the inner door body is provided in the second hinge, and a guide groove matching the guide rib is provided on the lock hook; the lock hook is slidably connected to the guide rib through the guide groove.

[0014] In some embodiments of the present application, the front end of the lock hook is bent and extended to form a hook portion. When the lock hook slides back and forth in the accommodating cavity, the hook portion can extend out of the second through hole or retract into the second through hole. The outer door body is provided with a lock protrusion that cooperates with the hook portion. When the outer door body is closed, the lock protrusion is opposite to the second through hole to engage with the lock hook.

[0015] In some embodiments of the present application, the refrigerator includes a first hinge; the rear end of the first hinge is fixed to the box body, and the front end of the first hinge protrudes from the front side of the box body and is rotatably connected to the inner door body; when the inner door body is closed, the first hinge abuts against the rear end of the slider to force the slider to slide toward the front side of the inner door body.

[0016] It can be seen from the above technical solutions that the embodiments of the present invention have at least the following advantages and positive effects:

[0017] In the refrigerator of the embodiment of the present invention, a double-layer door structure is formed by the cooperation of the inner door body and the outer door body. The inner door body is used to open and close the first storage space on the box body, and the outer door body is used to open and close the second storage space on the inner door body; at the same time, the slider and the lock hook of the self-locking device are used to slide together. When the door body is closed, the slider is squeezed, forcing the slider to slide toward the front side of the inner door body, driving the lock hook to slide synchronously and separate from the outer door body, so that the outer door body can be opened separately. When the inner door body is opened, the elastic reset member is used to drive the slider to slide toward the back side of the inner door body, so that the slider protrudes from the back side of the inner door body, and drives the lock hook to slide synchronously out of the front side of the inner door body and engage with the outer door body, or the elastic reset member is used to drive the lock hook to slide out of the front side of the inner door body and engage with the outer door body, and drives the slider to slide synchronously toward the back side of the inner door body, so that the slider protrudes from the back side of the inner door body, thereby connecting the outer door body and the inner door body as a whole and preventing them from being thrown off, thereby improving the convenience of using the box door, thereby improving the performance of the refrigerator, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a refrigerator according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of area A in the middle.

[0020] Figure 3 yes Figure 1A schematic diagram of the structure in the door open state.

[0021] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of area B in the middle.

[0022] Figure 5 yes Figure 1 Another structural diagram in the door open state.

[0023] Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of the C area in the middle.

[0024] Figure 7 yes Figure 1 Schematic diagram of the decomposition of the structure of area A from another perspective.

[0025] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle slider.

[0026] Figure 9 yes Figure 8 Schematic diagram of the structure of the middle slider from another perspective.

[0027] Figure 10 yes Figure 7 Schematic diagram of the structure of the middle lock hook.

[0028] Figure 11 yes Figure 10 Schematic diagram of the structure of the middle lock hook from another perspective.

[0029] Figure 12 yes Figure 7 Assembly diagram of the middle slider and locking hook.

[0030] Figure 13 yes Figure 7 Schematic diagram of the structure of the middle hinge box.

[0031] Figure 14 yes Figure 6 A partial cross-sectional view of the .

[0032] Figure 15 yes Figure 2 A partial cross-sectional view of the .

[0033] Figure 16 yes Figure 15 Schematic diagram of the structure in another state, when the outer door body is opened alone.

[0034] Figure 17 yes Figure 15 Schematic diagram of the structure in another state, at this time the inner door body and the outer door body are opened together.

[0035] The following are the reference numerals: 1. cabinet; 10. refrigeration compartment; 11. cabinet liner; 2. cabinet door; 20. second storage space; 21. inner door; 211. door shelf; 212. vent; 213. lighting; 214. trigger switch; 215. door lock; 22. outer door; 221. lock cam; 222. lock catch; 3. first hinge; 31. hinge plate; 311. first hinge shaft; 32. first hinge cover; 4. second hinge; 40. storage compartment; Cavity; 41. Hinge box; 411. Second hinge axis; 412. First through hole; 413. Guide rib; 414. Second through hole; 415. Stop rib; 42. Second hinge cover; 5. Self-locking device; 51. Slider; 511. Guide slot; 512. Main body; 513. Top column; 514. Positioning slot; 515. Support column; 52. Lock hook; 521. Guide slot; 522. Hook; 523. Guide protrusion; 53. Elastic reset member. DETAILED DESCRIPTION

[0036] Typical embodiments embodying the features and advantages of the present invention are described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative rather than limiting.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] Traditional refrigerator doors are typically single-layer. Opening a single-layer door exposes all food inside the refrigerator compartment to the elements, easily leading to cooling loss. Some refrigerators use double-layer doors, but these have structural flaws. When the inner door is opened, the outer layer can easily be flung open, resulting in a poor user experience.

[0041] For ease of description, unless otherwise specified, the directions of up, down, left, right, front, and back in this article are all based on the state of the refrigerator when it is in use. The refrigerator door is the front, the opposite direction is the back, and the vertical direction is the up and down direction.

[0042] Figure 1 It is a structural schematic diagram of a refrigerator according to an embodiment of the present invention. Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of area A in the middle. Figure 3 yes Figure 1 A schematic diagram of the structure in the door open state. Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of area B in the middle. Figure 5 yes Figure 1 Another structural diagram in the door open state. Figure 6 yes Figure 5 Schematic diagram of the enlarged structure of the C area in the middle.

[0043] See also Figures 1 to 6 The refrigerator provided by the embodiment of the present invention mainly includes a cabinet body 1, a cabinet door 2, a first hinge 3, a second hinge 4 and a self-locking device 5.

[0044] The box body 1 adopts a rectangular hollow structure. It is understandable that the box body 1 can also adopt a hollow shell structure of other shapes.

[0045] The space within the cabinet 1 serves as a first storage space. Multiple, mutually separated refrigeration compartments 10 can be provided within the first storage space. Each of these compartments 10 can function as an independent storage space, such as a freezer, refrigerator, or temperature-controlled room. This allows for storage of food in various cooling configurations, including freezing, refrigeration, and temperature-controlled storage, depending on the type of food being stored. The multiple refrigeration compartments 10 can be arranged vertically or horizontally.

[0046] A box liner 11 is provided in the box body 1, and a refrigeration compartment 10 is formed in the box liner 11. It is understandable that a plurality of box liners 11 may be provided in the box body 1, and each box liner 11 may form one or more refrigeration compartments 10.

[0047] The refrigerator door 2 is located on the front side of the refrigerator body 1 and is used to open and close the refrigeration compartment 10. The door 2 is connected to the refrigerator body 1 via a hinge, allowing the door 2 to rotate about the hinge axis, thereby opening and closing the refrigerator door 2 and the corresponding refrigeration compartment 10. It will be appreciated that multiple doors 2 may be provided, each corresponding to a refrigeration compartment 10. A single door 2 can also open and close multiple refrigeration compartments 10 simultaneously.

[0048] See also Figures 3 to 6 The box door 2 includes an inner door body 21 and an outer door body 22. The inner door body 21 and the outer door body 22 are stacked front and back, thereby forming a double-layer door structure of the box door 2.

[0049] It should be noted that, among the multiple doors 2, some may be double-layer doors consisting of an inner door body 21 and an outer door body 22, and the other part may be a common single-layer door structure, and the number of double-layer doors can be set as needed. In some embodiments, the multiple doors 2 may also all be double-layer doors.

[0050] Figure 7 yes Figure 1 Schematic diagram of the decomposition of the structure of area A from another perspective.

[0051] See also Figures 1 to 7 The inner door 21 is hinged to the front side of the cabinet 1 via the first hinge 3. The inner door 21 is used to open or close the refrigeration compartment 10, that is, to open and close the first storage space. It should be noted that the inner door 21 can open and close the corresponding refrigeration compartment 10 independently or together with other cabinet doors 2 to open and close the refrigeration compartment 10 in the cabinet 1, without limitation.

[0052] Specifically, there are two first hinges 3, which are respectively arranged at the top and bottom of the inner door body 21. The two first hinges 3 are opposite to each other up and down, and the hinge axes of the two first hinges 3 are located on the same axis, so that the inner door body 21 rotates around the hinge axis to realize the opening and closing of the inner door body 21, and then open and close the first storage space.

[0053] See also Figure 7 In some embodiments, the first hinge 3 located at the top of the inner door body 21 includes a hinge plate 31 and a first hinge cover 32. The rear end of the hinge plate 31 is fixed to the top surface of the box body 1, and the front end of the hinge plate 31 is provided with a first hinge shaft 311, which is rotatably connected to one end of the top of the inner door body 21. The first hinge cover 32 covers the top of the hinge plate 31 to enclose the hinge plate 31 within the first hinge cover 32.

[0054] See also Figure 3 and Figure 5 A second storage space 20 is recessed on the front side wall of the inner door body 21, and food can be stored in the second storage space 20.

[0055] In some embodiments, a door shelf 211 is provided in the second storage space 20 , and a plurality of door shelves 211 are provided. The plurality of door shelves 211 are arranged in an upper and lower interval pattern to facilitate the classified storage of food.

[0056] In some embodiments, a vent 212 is provided on the inner door body 21, and the second storage space 20 can be connected to the first storage space, that is, the refrigeration compartment 10, through the vent 212, so that the cold air in the first storage space can enter the second storage space 20 through the vent 212, providing refrigeration for the second storage space 20, and realizing low-temperature storage of food in the second storage space 20.

[0057] In some embodiments, two sets of vents 212 are provided, one on each of the upper and lower sidewalls of the second storage space 20. The second storage space 20 is connected to the first storage space via the two sets of vents 212. One set of vents 212 allows cold air from the first storage space to enter the second storage space 20, while the other set of vents 212 allows air from the second storage space 20 to return to the first storage space. This facilitates the entry of cold air into the second storage space 20 and improves the low-temperature storage effect within the second storage space 20.

[0058] Still see Figures 1 to 7 The outer door body 22 is hinged to the front side of the inner door body 21 through the second hinge 4, and the outer door body 22 is used to open or close the second storage space 20.

[0059] Specifically, there are two second hinges 4, which are respectively arranged at the top and bottom of the outer door body 22. The two second hinges 4 are opposite to each other up and down, and the hinge axes of the two second hinges 4 are located on the same axis, so that the outer door body 22 rotates around the hinge axis to realize the opening and closing of the outer door body 22, and then open and close the second storage space 20.

[0060] See also Figure 7 In some embodiments, the second hinge 4 located at the top of the outer door body 22 includes a hinge box 41 and a second hinge cover 42. The rear end of the hinge box 41 is fixed to the top surface of the inner door body 21, and the front end of the hinge box 41 is provided with a second hinge shaft 411 extending downward. The second hinge shaft 411 is rotatably connected to one end of the top of the outer door body 22. The hinge box 41 has a receiving cavity 40 defined therein, which is used to provide installation space for the self-locking device 5. The second hinge cover 42 covers the top opening of the hinge box 41 to enclose the self-locking device 5 within the hinge box 41.

[0061] See also Figure 3 and Figure 5 In some embodiments, the outer door 22 is provided with a visible area corresponding to the second storage space 20. Standing outside the door 2, the user can see the storage status of the food in the second storage space 20 through the visible area, and can also observe the second storage space 20 within the inner door 21 without opening the door. It should be noted that the size of the visible area can be set as needed.

[0062] See also Figure 5 In some embodiments, a lighting lamp 213 is provided in the second storage space 20, and the lighting lamp 213 is provided on the inner wall of the second storage space 20. When the lighting lamp 213 is turned on, it can provide lighting light for the second storage space 20.

[0063] It should be noted that, in some embodiments, a plurality of lighting lamps 213 may be provided, and the plurality of lighting lamps 213 may be provided at different positions within the second storage space 20 to provide light of different angles for the second storage space 20 .

[0064] See also Figure 5 and Figure 6 In some embodiments, a trigger switch 214 is provided on the inner door 21, and the trigger switch 214 is protruded from the front side of the inner door 21. The trigger switch 214 can adopt an elastic trigger structure. The trigger switch 214 is used to trigger a corresponding control signal when the outer door 22 is opened or closed from the inner door 21, thereby controlling the lighting 213 to turn on or off. For example, when the outer door 22 is closed, the outer door 22 squeezes the trigger switch 214, causing the trigger switch 214 to generate a control signal, thereby controlling the lighting 213 to turn off. When the outer door 22 is opened, the outer door 22 is separated from the trigger switch 214, and the trigger switch 214 can also generate a control signal to control the lighting 213 to turn on, thereby providing light when accessing the food in the second storage space 20.

[0065] It should be noted that the trigger switch 214 can also be provided on the outer door body 22 and protrude from the rear side wall of the outer door body 22. When the outer door body 22 is switched on or off, the inner door body 21 can also squeeze the trigger switch 214 on the outer door body 22, thereby controlling the operation of the lighting lamp 213.

[0066] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle slider 51. Figure 9 yes Figure 8 A schematic structural diagram of the middle slider 51 from another perspective. Figure 10 yes Figure 7 Schematic diagram of the structure of the middle locking hook 52. Figure 11 yes Figure 10A schematic structural diagram of the middle locking hook 52 from another perspective. Figure 12 yes Figure 7 Schematic diagram of the assembly of the middle slider 51 and the locking hook 52. Figure 13 yes Figure 7 Schematic diagram of the structure of the middle hinge box 41. Figure 14 yes Figure 6 A partial cross-sectional view of the .

[0067] See also Figures 7 to 14 The self-locking device 5 is located at the top of the inner door body 21 and within the hinge box 41 of the second hinge 4. The self-locking device 5 is configured to extend from the front side of the inner door body 21 and interlock with the outer door body 22, locking the inner and outer door bodies 21, 22 together. This allows the outer door body 22 to be opened or closed along with the inner door body 21, facilitating the opening and closing of the first storage space. Simultaneously, the self-locking device 5 can be retracted into the inner door body 21, allowing the outer door body 22 to be opened or closed independently, facilitating the opening and closing of the second storage space 20.

[0068] It should be noted that the self-locking device 5 can also be set at other positions of the inner door body 21, and is not limited to the second hinge 4 at the top of the inner door body 21. It can also be set at other positions on the top of the inner door body 21, or at the bottom of the inner door body 21.

[0069] See also Figures 8 to 14 In some embodiments, the self-locking device 5 includes a slider 51, a lock hook 52, and an elastic return member 53. The slider 51, the lock hook 52, and the elastic return member 53 are all disposed in the receiving cavity 40 of the hinge box 41. It should be noted that in some other embodiments, the receiving cavity 40 may not be disposed in the second hinge 4. For example, the receiving cavity 40 may be disposed in other areas at the top of the inner door body 21, which can also provide installation space for the slider 51, the lock hook 52, and the elastic return member 53 of the self-locking device 5.

[0070] See also Figures 8 to 14 In some embodiments, the slider 51 is movably disposed within the receiving cavity 40 within the hinge box 41 and is capable of sliding back and forth within the receiving cavity 40 along the front-to-back direction of the inner door body 21. A first through-hole 412 is defined on the rear sidewall of the hinge box 41, communicating with the receiving cavity 40. The rear end of the slider 51 is disposed through the first through-hole 412 and protrudes out of the rear side of the hinge box 41 and, in turn, the rear side of the inner door body 21. Due to the limiting effect of the first through-hole 412, the slider 51 is capable of sliding back and forth within the receiving cavity 40 within the hinge box 41 along the axis of the first through-hole 412.

[0071] See also Figures 8 to 14The lock hook 52 is movably disposed in the receiving cavity 40 within the hinge box 41, and the lock hook 52 is slidably engaged with the slider 51 and is in transmission connection with the slider 51. That is, when the slider 51 slides back and forth within the receiving cavity 40, it can synchronously drive the lock hook 52 to slide back and forth within the receiving cavity 40. Similarly, when the lock hook 52 slides back and forth within the receiving cavity 40, it can also drive the slider 51 to slide back and forth within the receiving cavity 40 synchronously.

[0072] In some embodiments, a guide rib 413 extending in the left-right direction of the inner door body 21 is provided in the hinge box 41, that is, the guide rib 413 is provided in the receiving cavity 40. The locking hook 52 is provided with a guide groove 521 that cooperates with the guide rib 413. The locking hook 52 is slidably connected to the guide rib 413 through the guide groove 521, thereby enabling the locking hook 52 to slide left and right within the receiving cavity 40 along the guide rib 413. When the slider 51 slides back and forth within the receiving cavity 40, the locking hook 52 can slide left and right within the receiving cavity 40 synchronously.

[0073] It should be noted that, in some other embodiments, the guide rib 413 may also form a certain angle with the left and right directions of the inner door body 21 .

[0074] See also Figure 13 and Figure 14 In some embodiments, a second through hole 414 is defined on the side wall of the hinge box 41 at the front end, facing the outer door body 22. The second through hole 414 communicates with the receiving chamber 40. When the lock hook 52 slides left and right within the receiving chamber 40 and slides to one end of the guide rib 413, the front end of the lock hook 52 can extend out of the second through hole 414 to engage with the outer door body 22, thereby integrally connecting the inner door body 21 and the outer door body 22. When the lock hook 52 slides in the opposite direction to the other end of the guide rib 413, the front end of the lock hook 52 can retract into the second through hole 414, that is, retract back into the receiving chamber 40, thereby separating the inner door body 21 from the outer door body 22 and allowing the outer door body 22 to be opened independently.

[0075] Figure 15 Figure 2 A partial cross-sectional view of the . Figure 16 Figure 15 A schematic diagram of the structure in another state, in which the outer door body 22 is opened alone. Figure 17 Figure 15 A schematic diagram of the structure in another state, in which the inner door body 21 and the outer door body 22 are opened together.

[0076] See also Figures 10 to 17In some embodiments, the front end of the lock hook 52 is bent and extended to form a hook portion 522. When the lock hook 52 slides left and right within the receiving cavity 40, the hook portion 522 can extend from the second through hole 414 or retract into the second through hole 414. At the same time, the outer door body 22 is provided with a locking protrusion 221 that cooperates with the hook portion 522. When the outer door body 22 is closed, the locking protrusion 221 is aligned with the second through hole 414 for interlocking with the lock hook 52.

[0077] Specifically, when the lock hook 52 slides leftward along the guide rib 413, the hook portion 522 can extend out of the second through hole 414 and engage with the lock protrusion 221. Figure 17 In the state shown, the inner door body 21 and the outer door body 22 are connected as a whole, which facilitates opening and closing the refrigeration compartment 10 in the cabinet 1 together. In the process of opening and closing the refrigeration compartment 10 together with the inner door body 21 and the outer door body 22, the outer door body 22 will not be thrown away alone, which is convenient for users. When the lock hook 52 slides to the right along the guide rib 413, the hook portion 522 can be retracted into the second through hole 414 and separated from the lock protrusion 221. Figure 15 and Figure 16 In the state shown, the inner door body 21 is separated from the outer door body 22, so that the outer door body 22 can be opened and closed separately, thereby facilitating the separate opening and closing of the second storage space 20.

[0078] See also Figures 8 to 17 In some embodiments, a guide groove 511 extending obliquely is recessed on the slider 51, and the extension direction of the guide groove 511 is set at an angle to the axial direction of the first through hole 412, that is, it is set at an angle to the sliding direction of the slider 51, and the angle is an acute angle. At the same time, a guide protrusion 523 that slides with the guide groove 511 is provided on the lock hook 52, and the guide protrusion 523 is slidably connected in the guide groove 511. Therefore, when the slider 51 slides toward the front side of the inner door body 21 in the receiving cavity 40, the slider 51 can squeeze the guide protrusion 523 through the inner wall of the guide groove 511, thereby driving the lock hook 52 to slide to the right, and causing the hook portion 522 of the lock hook 52 to retract into the receiving cavity 40 to separate from the lock protrusion 221 of the outer door body 22, refer to Figure 17 The status shown changes to Figure 15 When the slider 51 slides toward the back side of the inner door body 21 in the receiving cavity 40, the slider 51 can also squeeze the guide protrusion 523 through the inner wall of the guide groove 511, thereby driving the lock hook 52 to slide to the left, and making the hook portion 522 of the lock hook 52 protrude out of the second through hole 414 to engage with the lock protrusion 221 of the outer door body 22, refer to Figure 15 The status shown changes to Figure 17 Status shown.

[0079] It should be noted that, in some other embodiments, the guide groove 511 may also be provided on the lock hook 52 , and the guide protrusion 523 may be provided on the slider 51 accordingly.

[0080] In some embodiments, the angle between the extending direction of the guide slot 511 and the axial direction of the first through hole 412 is 45°. This 45° angle is more conducive to converting the forward and backward movement of the slider 51 in the receiving cavity 40 into the left and right movement of the locking hook 52 in the receiving cavity 40.

[0081] See also Figures 8 to 14 In some embodiments, the slider 51 includes an integrally formed main body 512 and a top post 513 . The main body 512 is movably disposed in the receiving cavity 40 , and the guide slot 511 is formed on the main body 512 .

[0082] The top post 513 extends rearward from the back of the main body 512, and the extension direction of the top post 513 is consistent with the axis direction of the first through hole 412. The top post 513 is disposed within the first through hole 412. The diameter of the top post 513 matches the aperture of the first through hole 412, allowing the top post 513 to slide stably back and forth along the axis direction of the first through hole 412, thereby driving the main body 512 to slide stably back and forth within the receiving cavity 40.

[0083] In some embodiments, a positioning slot 514 is recessed in the main body 512. The extending direction of the positioning slot 514 is consistent with the extending direction of the top post 513, that is, it extends along the axial direction of the first through hole 412. At the same time, a retaining rib 415 is convexly provided in the hinge box 41. The retaining rib 415 is located in the receiving cavity 40. The retaining rib 415 extends into the positioning slot 514 and can slide relative to the positioning slot 514. Specifically, when the main body 512 slides back and forth in the receiving cavity 40, the retaining rib 415 can slide back and forth in the positioning slot 514 relative to the main body 512. Therefore, the sliding cooperation between the retaining rib 415 and the positioning slot 514, plus the positioning and sliding cooperation between the top post 513 and the first through hole 412, can limit the slider 51 in the receiving cavity 40 and stably slide along the front-to-back direction of the inner door body 21.

[0084] See also Figures 12 to 17 In some embodiments, the elastic return member 53 is a compression spring disposed within the positioning slot 514 of the main body 512. One end of the compression spring abuts against the end of the positioning slot 514 near the top post 513, while the other end of the compression spring abuts against the retaining rib 415. Because the retaining rib 415 is fixed within the receiving cavity 40, the compression spring can compress the main body 512 backward, forcing the main body 512 to slide backward along the axis of the first through hole 412.

[0085] See also Figure 17When the inner door body 21 is opened, the main body 512 can automatically move toward the back side of the door body under the action of the elastic force of the compression spring until the rear end of the main body 512 abuts against the rear side wall of the accommodating cavity 40, and the rear end of the top column 513 protrudes out of the back side of the hinge box 41 and the back side of the inner door body 21.

[0086] See also Figures 8 to 17 In some embodiments, a support column 515 is disposed within the positioning slot 514 of the slider 51. The support column 515 extends from the end of the positioning slot 514 near the top column 513 to the other end, with the extension direction of the support column 515 being opposite to that of the top column 513. A compression spring is sleeved on the support column 515, with a gap between the support column 515 and the retaining rib 415. The support column 515 confines the compression spring within the positioning slot 514, thereby ensuring that the main body 512 can slide stably back and forth within the receiving cavity 40.

[0087] See also Figures 15 to 17 The working principle of the self-locking device 5 is as follows: when the inner door body 21 is closed, the rear end of the top column 513 can contact the first hinge cover 32. Since the first hinge 3 is fixed to the box body 1, the rear end of the top column 513 can be squeezed by the first hinge 3, forcing the slider 51 to slide toward the front side of the inner door body 21 along the axial direction of the first through hole 412, thereby driving the lock hook 52 to slide rightward in the receiving chamber 40 through the sliding matching structure of the slider 51 and the lock hook 52, that is, the matching structure of the guide slide groove 511 and the guide protrusion 523, so that the hook portion 522 at the front end of the lock hook 52 can be retracted into the receiving chamber 40 to separate from the outer door body 22, thereby separating the outer door body 22 from the inner door body 21, and the outer door body 22 can be opened or closed freely alone, as shown in FIG. Figure 16 The compression spring is compressed until the inner door body 21 is reopened, the top column 513 is freed from the restriction of the first hinge cover 32, and the compression spring drives the slider 51 to move toward the back side of the inner door body 21 again, and simultaneously drives the lock hook 52 to slide leftward in the receiving cavity 40, so that the hook portion 522 at the front end of the lock hook 52 extends out of the second through hole 414 to engage with the outer door body 22, thereby connecting the outer door body 22 and the inner door body 21 as a whole. The outer door body 22 and the inner door body 21 open and close synchronously, and the outer door body 22 will not be thrown off. Figure 17 Status shown.

[0088] It should be noted that, in some other embodiments, when the inner door body 21 is closed, the rear end of the top column 513 may also directly abut against the box body 1 , thereby forcing the slider 51 to slide toward the front side of the inner door body 21 .

[0089] It should also be noted that, in some other embodiments, a compression spring may be provided on the lock hook 52, and driven to slide to the left, so that the hook portion 522 at the front end of the lock hook 52 protrudes out of the receiving cavity 40 and engages with the outer door body 22. In this case, through the sliding cooperation between the lock hook 52 and the slider 51, the slider 51 can also slide toward the back side of the inner door body 21, and the top post 513 can protrude out of the back side of the inner door body 21.

[0090] It should also be noted that in some other embodiments, the elastic return member 53 may not be a compression spring, but may be a tension spring. For example, the tension spring may be connected to the slider 51, so that the slider 51 is pulled to automatically slide toward the back side of the inner door body 21; or the tension spring may be connected to the lock hook 52, so that the lock hook 52 is pulled to automatically move to the left, so that the hook portion 522 at the front end of the lock hook 52 protrudes out of the second through hole 414.

[0091] See also Figure 5 In some embodiments, a door lock 215 is provided on the front sidewall of the inner door body 21. The door lock 215 is an electric door lock or a mechanical door lock. Meanwhile, a lock catch 222 is provided on the rear sidewall of the outer door body 22. The lock catch 222 is configured to be inserted into the door lock 215, allowing the lock catch 222 to be locked or released by the door lock 215. When the door lock 215 locks the lock catch 222, the outer door body 22 is locked to the inner door body 21 and cannot be opened. When the door lock 215 releases the lock catch 222, the outer door can be opened relative to the inner door body 21.

[0092] Based on the above technical solution, the embodiments of the present invention have at least the following effects:

[0093] In the refrigerator of this embodiment of the present invention, a double-layer door structure is formed by the cooperation of the inner door body 21 and the outer door body 22. The inner door body 21 is used to open and close the first storage space on the cabinet 1, and the outer door body 22 is used to open and close the second storage space 20 on the inner door body 21. At the same time, the slider 51 and the lock hook 52 of the self-locking device 5 slide together. When the door is closed, the slider 51 is squeezed, forcing the slider 51 to slide toward the front of the inner door body 21, driving the lock hook 52 to slide synchronously and separate from the outer door body 22, allowing the outer door body 22 to be opened independently. When the inner door body 21 is opened, the elastic reset member 53 is used to drive the slider 51 to slide toward the back side of the inner door body 21, so that the slider 51 protrudes from the back side of the inner door body 21, and drives the lock hook 52 to slide synchronously out of the front side of the inner door body 21 and engage with the outer door body 22, or the elastic reset member 53 is used to drive the lock hook 52 to slide out of the front side of the inner door body 21 and engage with the outer door body 22, and drives the slider 51 to slide synchronously toward the back side of the inner door body 21, so that the slider 51 protrudes from the back side of the inner door body 21, and then the outer door body 22 and the inner door body 21 are connected as a whole and will not be thrown off, thereby improving the convenience of use of the box door 2, thereby improving the performance of the refrigerator, and improving the user experience.

[0094] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are intended to be illustrative and exemplary rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. All changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A refrigerator, characterized in that: include: a box body, wherein a first storage space is provided; An inner door body is rotatably arranged on the front side of the box body and is used to open and close the first storage space; a second storage space is recessed on the front side surface of the inner door body; an outer door body, rotatably stacked on the front side of the inner door body, the outer door body being used to open and close the second storage space; A self-locking device comprising a slider, a locking hook and an elastic reset member; The slider is slidably connected to the inner door body along the front-back direction and can protrude from the back side of the inner door body; the lock hook is slidably connected to the inner door body, and the lock hook and the slider are slidably matched and transmission-connected; the elastic reset member is provided on the inner door body; When the slider slides toward the back side of the inner door body and protrudes out of the back side of the inner door body, the lock hook simultaneously slides and protrudes out of the front side of the inner door body to engage with the outer door body; when the slider slides toward the front side of the inner door body, the lock hook simultaneously slides in the opposite direction and separates from the outer door body. When the inner door body is closed, the rear end of the slider can be squeezed and forced to slide toward the front side of the inner door body; When the inner door body is opened, the elastic return member can drive the slider to slide toward the back side of the inner door body, or drive the lock hook to slide in the direction of being engaged with the outer door body.

2. The refrigerator according to claim 1, wherein The refrigerator includes a second hinge; a rear end of the second hinge is fixed to the inner door body, and a front end of the second hinge protrudes from the front side of the inner door body and is rotatably connected to the outer door body; The sliding block, the locking hook and the elastic reset member are all arranged on the second hinge.

3. The refrigerator according to claim 2, wherein: A receiving cavity is provided inside the second hinge, and the receiving cavity extends to the front end of the second hinge and protrudes out of the front side of the inner door body; A first through hole is formed on the back side of the second hinge, and the first through hole is connected to the receiving cavity; the slider is slidably connected in the receiving cavity, and the rear end of the slider can extend out of the first through hole and protrude out of the back side of the inner door body; A second through hole is provided on the side wall of the front end of the second hinge facing the outer door body, and the second through hole is connected to the receiving cavity; the lock hook is slidably connected in the receiving cavity, and the front end of the lock hook can extend out of the second through hole to be buckled with the outer door body.

4. The refrigerator according to claim 3, wherein The slider includes a main body and a top column protruding from the back side of the main body; The main body is movably disposed in the receiving cavity; The top column is passed through the first through hole and protrudes out of the back side of the second hinge. The top column can slide back and forth along the first through hole and drive the main body to slide back and forth in the receiving cavity.

5. The refrigerator according to claim 4, wherein: A positioning slot is recessed in the main body, and the extending direction of the positioning slot is consistent with the extending direction of the top column; A retaining rib is protruding from the second hinge, and the retaining rib extends into the positioning slot; The elastic return member is a compression spring, which is arranged in the positioning slide groove. One end of the compression spring is against the end of the positioning slide groove close to the top column, and the other end of the compression spring is against the retaining rib. The compression spring can drive the main body to slide backward along the axial direction of the first through hole.

6. The refrigerator according to claim 5, wherein The slider also includes a support column arranged in the positioning slot, the support column extends from the end of the positioning slot close to the top column to the other end, and there is a gap between the support column and the retaining rib; the compression spring is sleeved on the support column.

7. The refrigerator according to claim 5, wherein The main body is provided with an obliquely extending guide slot, and the lock hook is provided with a guide protrusion that slidably cooperates with the guide slot, and the extension directions of the guide slot and the guide protrusion are both arranged at an angle to the axis of the top column, and the angle is an acute angle; When the top column slides back and forth along the first through hole, the guide protrusion slides back and forth in the guide slot, and causes the lock hook to slide back and forth in the receiving cavity.

8. The refrigerator according to claim 7, wherein: A guide rib extending in the left-right direction of the inner door body is provided in the second hinge, and a guide groove cooperating with the guide rib is provided on the lock hook; The locking hook is slidably connected to the guide rib through the guide groove.

9. The refrigerator according to claim 3, wherein: The front end of the lock hook is bent and extended to form a hook portion, and when the lock hook slides back and forth in the receiving cavity, the hook portion can extend out of the second through hole or retract into the second through hole; The outer door body is provided with a locking protrusion matched with the hook portion. When the outer door body is closed, the locking protrusion is aligned with the second through hole to be engaged with the locking hook.

10. The refrigerator according to claim 1, wherein The refrigerator includes a first hinge; a rear end of the first hinge is fixed to the box body, and a front end of the first hinge protrudes from the front side of the box body and is rotatably connected to the inner door body; When the inner door body is closed, the first hinge abuts against the rear end of the slider to force the slider to slide toward the front side of the inner door body.

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