Embedded door hinge and refrigerator

Abstract

The application discloses an embedded door hinge and a refrigerator. The embedded door hinge is installed between a cabinet and a door plate, and comprises a hinge plate arranged on the cabinet and a movable part arranged on the door plate. The movable part and the hinge plate have a hinge structure for driving the door plate to rotate. The hinge structure comprises an embedded part arranged on the movable part, a movement groove arranged on the hinge plate and accommodating the movement of the movable part, and a driving part arranged in the movement groove and driving the movement of the embedded part. The movable part moves along with the embedded part, thereby driving the door plate to open and move along the arrangement direction of the movement groove. Compared with the prior art, the embedded door hinge can realize the effect of changing the track through a simple gear transmission structure, has fewer parts, improves the service life, and reduces the cost.

Description

Technical Field

[0001] This invention relates to the field of embedded door hinge technology, and in particular to an embedded door hinge and a refrigerator. Background Technology

[0002] As people's living standards improve, the types and quantities of household appliances are constantly increasing, among which refrigerators are one of the essential appliances in the home. However, due to limitations in living space and aesthetic preferences, decoration companies often allocate limited storage space for refrigerators during the design and renovation process. This space is often only suitable for small refrigerators, and their capacity is far from meeting usage needs. Therefore, the development of built-in refrigerators has become an effective way to solve this problem.

[0003] Built-in refrigerators effectively solve the problem of space utilization, and their most important component is the hinge. The hinge allows the door panel to move along a special track when the refrigerator door opens and closes, greatly improving space utilization. However, currently available built-in hinges are often complex in structure and expensive, which has become a significant factor limiting the development of built-in refrigerators.

[0004] Therefore, in order to solve the above problems, it is necessary to provide a low-cost hinge with simple manufacturing process to reduce the cost of built-in refrigerators. Summary of the Invention

[0005] To address the issues of complex structure and high cost of existing embedded refrigerator door hinges, this invention proposes an embedded door hinge and a refrigerator.

[0006] The technical solution of the present invention is to provide an embedded door hinge, which is installed between the housing and the door panel, including a hinge plate disposed on the housing and a movable part disposed on the door panel;

[0007] The movable part and the hinge plate have a hinge structure that drives the door panel to rotate. The hinge structure includes an inset part disposed on the movable part, a movement groove disposed on the hinge plate to accommodate the movement of the movable part, and a drive member disposed in the movement groove to drive the inset part to move. The movable part moves along with the inset part, thereby driving the door panel to open and move along the arrangement direction of the movement groove.

[0008] Furthermore, the movable part includes a positioning plate for mounting the embedded part, and the door panel is provided with a receiving hole for accommodating the embedded part. One end of the embedded part is fixed to the receiving hole, and the other end is movably mounted in the moving groove.

[0009] Furthermore, the inner part is a cylindrical bushing, and the positioning plate is provided with a sleeve to accommodate the bushing. The end of the bushing connected to the moving groove is provided with a first gear tooth, and the end of the bushing connected to the receiving hole is provided with a second gear tooth. The bushing rotates in the moving groove through the first gear tooth, and the bushing is fixed in the receiving hole through the second gear tooth.

[0010] Furthermore, the inner edge of the motion groove is designed with a serrated edge, and the first gear tooth meshes with the motion groove;

[0011] The inner wall of the receiving hole is shaped to mesh with the second gear tooth, so that the bushing is fixed to the door panel.

[0012] Furthermore, the driving component is a driving gear disposed on the positioning plate. The positioning plate has a groove for fixing the driving gear, and the driving gear, the first gear tooth, and the motion groove mesh with each other, so that the positioning plate can move in the motion groove.

[0013] Furthermore, the diameter of the drive gear is half the diameter of the bushing.

[0014] Furthermore, one end of the hinge plate is fixed to the housing, and the other end is provided with the motion groove. The positioning plate is mounted on the hinge plate through a fixing plate.

[0015] Furthermore, the hinge plate has a positioning hole at one end near the housing, and the fixing plate has flanges on both sides, which are used to install the positioning plate in the position of the motion slot.

[0016] Furthermore, a coil spring is also provided on the hinge plate. The center of the coil spring is fixed on the hinge plate, and the end of the coil spring is welded to the movable part to realize automatic door closing.

[0017] This application also proposes a refrigerator having the aforementioned embedded door hinge.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] The embedded door hinge proposed in this application achieves the effect of track changing through a simple gear transmission structure. This results in a simpler structure, fewer parts, increased service life, and reduced costs. Furthermore, most variable track hinges on the market are installed in the gap between the door and the cabinet due to their structural characteristics, making them extremely obtrusive when opening and closing the door. This hinge, however, has the same appearance and installation position as traditional fixed track hinges, offering higher concealment and a more aesthetically pleasing design. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the installation of the embedded door hinge of the present invention;

[0022] Figure 2 This is a schematic diagram of the hinge plate structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the front structure of the embedded door hinge of the present invention;

[0024] Figure 4 This is a schematic diagram of the bushing structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the positioning plate structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the door panel structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the reverse side structure of the embedded door hinge of the present invention;

[0028] Figure 8 This is a schematic diagram of the fixing plate structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the refrigerator door opening according to the present invention;

[0030] Figure 10 This is a schematic diagram of the refrigerator door opening process according to the present invention;

[0031] Figure 11 This is a schematic diagram of the refrigerator door panel of the present invention fully opened;

[0032] One of them is a door panel;

[0033] 11 receiving holes;

[0034] 2. Embedded door hinges;

[0035] 21 Hinges;

[0036] 211 positioning hole;

[0037] 22 shaft sleeve;

[0038] 221 First gear tooth;

[0039] 222 Second gear tooth;

[0040] 23. Positioning plate;

[0041] 231 sleeve;

[0042] 24 motion slots;

[0043] 25 drive gears;

[0044] 26 fixed plates;

[0045] 261 Flip-edge;

[0046] 27 coil springs;

[0047] 3-box enclosure. Detailed Implementation

[0048] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0049] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the invention, and does not imply that every embodiment of the invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0050] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0051] An embedded door hinge 2 is installed between a housing 3 and a door panel 1, including a hinge plate 21 disposed on the housing 3 and a movable part disposed on the door panel 1;

[0052] The movable part and the hinge plate 21 have a hinge structure that drives the door panel 1 to rotate. The hinge structure includes an inset part on the movable part, a motion groove 24 on the hinge plate 21 to accommodate the movement of the movable part, and a drive member in the motion groove 24 to drive the inset part to move. The movable part moves along with the inset part, thereby driving the door panel 1 to open and move along the arrangement direction of the motion groove 24.

[0053] In a specific embodiment, such as Figure 1 and Figure 2 As shown, the embedded door hinge 2 proposed in this application is installed on the refrigerator, including a hinge plate 21 fixed on the refrigerator body 3 and a movable part installed on the refrigerator door panel 1. The movable part can move on the hinge plate 21, thereby realizing the opening action of the refrigerator door.

[0054] The connection between the movable part and the hinge plate 21 is provided with a hinge structure that allows the refrigerator door panel 1 to rotate. The hinge structure also includes an embedded part, a moving groove 24, and a driving member. The moving groove 24 is located at one end of the hinge plate 21 near the refrigerator door panel 1. The moving groove 24 also has a driving member that drives the embedded part to move. Under the action of the driving member, the embedded part can reciprocate along the arrangement direction of the moving groove 24. Since one end of the embedded part is connected to the movable part and the other end is connected to the moving groove 24, when the embedded part moves in the moving groove 24, it will drive the movable part connected to the refrigerator door panel 1 to rotate together. This allows the refrigerator door panel 1 to move along the arrangement direction of the moving groove 24 while opening and closing the door, achieving the effect of changing tracks.

[0055] Due to the characteristics of built-in refrigerators, the two sides of the refrigerator are basically against the wall and cabinet during installation. In order to ensure that the door panel 1 of the built-in refrigerator can still open and close normally when there is no reserved space on both sides, a door hinge that can change track is required. When the door is opened, the door panel 1 moves inward toward the cabinet 3 at the same time, so that even when the refrigerator is fully opened, the door panel 1 does not protrude from the cabinet 3.

[0056] Using the embedded door hinge 2 proposed in this application, when installed on an embedded refrigerator, the door panel 1 can move in the motion groove 24 through the movable part when fully opened at a right angle, so that the door panel 1 moves laterally while opening, so that the door panel 1 does not protrude from the cabinet 3, and no gaps need to be reserved on both sides, making it more aesthetically pleasing.

[0057] Furthermore, the movable part includes a positioning plate 23 for mounting the embedded part. The door panel 1 is provided with a receiving hole 11 for accommodating the embedded part. One end of the embedded part is fixed to the receiving hole 11, and the other end is movably mounted in the movement groove 24. In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the embedded part is a cylindrical bushing 22. The positioning plate 23 is provided with a sleeve 231 for accommodating the bushing 22. The end of the bushing 22 connected to the movement groove 24 is provided with a first gear 221, and the end of the bushing 22 connected to the receiving hole 11 is provided with a second gear 222. The bushing 22 rotates in the movement groove 24 through the first gear 221, and the bushing 22 is fixed in the receiving hole 11 through the second gear 222.

[0058] In a specific embodiment, such as Figure 3 and Figure 4As shown, the movable part also includes a positioning plate 23 for mounting the embedded part. A receiving hole 11 is provided on the refrigerator door panel 1 for placing the embedded part. The embedded part is a cylindrical bushing 22. The positioning plate 23 is provided with a sleeve 231 for receiving the bushing 22. The bushing 22 can rotate in the sleeve 231, and when the bushing 22 moves in the movement groove 24, it also drives the positioning plate 23 to move together. One end of the cylindrical bushing 22 is movably connected to the movement groove 24, and the other end is connected to the receiving hole 11. Both ends of the bushing 22 are set in a sawtooth shape. The end connected to the movement groove 24 is provided with a first gear 221, and the end connected to the bushing 22 is provided with a second gear 222. Through the action of the first gear 221 and the second gear 222, the bushing 22 can connect the refrigerator door panel 1 and the hinge plate 21, thereby driving the door panel 1 to move in the arrangement direction of the movement groove 24.

[0059] Furthermore, the inner edge of the motion groove 24 is designed with a serrated shape, and the first gear tooth 221 meshes with the motion groove 24;

[0060] The inner wall of the receiving hole 11 is shaped to mesh with the second gear tooth 222, so that the bushing 22 is fixed on the door panel 1.

[0061] In a specific embodiment, such as Figure 2 , Figure 4 , Figure 5 As shown, the moving groove 24 has a serrated inner edge that meshes with the first gear tooth 221 on the bushing 22. This design acts as a rack, allowing the first gear tooth 221 to engage with the serrated inner edge, so that the bushing 22 can roll in the moving groove 24 under the action of force.

[0062] Among them, such as Figure 5 and Figure 6 As shown, the receiving hole 11 on the door panel 1 meshes with the second gear 222 on the bushing 22, and the inner wall of the receiving hole 11 is serrated. After the embedded door hinge 2 is installed on the refrigerator, when the refrigerator door panel 1 is opened, the second gear 222 meshes with the receiving hole 11, preventing the bushing 22 from rotating within the receiving hole 11 on the door panel 1, so that the bushing 22 can rotate synchronously with the door panel 1 when the refrigerator door is opened. The bushing 22 and the door panel 1 rotate in the same direction and at the same speed, so that the rotation of the door panel 1 can be completely transmitted to the bushing 22, causing the bushing 22 to rotate under the force of the door panel 1.

[0063] The design of the receiving hole 11 on the refrigerator door panel 1 engaging with the second gear 222 on the bushing 22 not only provides stable support for opening the door, but also ensures that the door panel 1 can drive the bushing 22 to move during opening and closing. The serrated inner wall of this design greatly enhances the stability and controllability of the door panel 1.

[0064] When the recessed door hinge 2 is installed on the refrigerator, when the door panel 1 is opened, the second gear 222 engages with the receiving hole 11, preventing the bushing 22 from rotating within the receiving hole 11 on the door panel 1. This design allows the bushing 22 to rotate synchronously with the door panel 1 when the refrigerator door is opened. The bushing 22 and the door panel 1 rotate in the same direction and at the same speed, ensuring that the force of the door panel 1's rotation is fully transmitted to the bushing 22, causing the bushing 22 to rotate under the force of the door panel 1. The effective operation of this mechanism ensures the stable opening and closing of the refrigerator door panel 1 and reduces the swaying of the refrigerator door panel 1 during movement, making it more convenient and comfortable for users.

[0065] The design of the receiving hole 11 on the door panel 1 meshing with the second gear 222 on the bushing 22 not only plays a key role in functionality but also significantly improves the user experience. The advantage of this design lies in its stability and controllability; it ensures the refrigerator door remains stable during opening and closing, avoiding potential problems caused by excessive swinging of the door panel 1. Simultaneously, because the rotation direction and speed of the bushing 22 and the door panel 1 are consistent, users experience a smooth and stable operation when opening and closing the refrigerator door.

[0066] In summary, the design of the receiving hole 11 on the door panel 1 engaging with the second gear 222 on the bushing 22, and the installation of the embedded door hinge 2, through technological and structural improvements, enhance the convenience of using the refrigerator and improve the user experience.

[0067] Furthermore, the driving component is a driving gear 25 disposed on the positioning plate 23. The positioning plate 23 has a groove for fixing the driving gear 25, and the driving gear 25, the first gear tooth 221, and the motion groove 24 mesh with each other, so that the positioning plate 23 can move in the motion groove 24.

[0068] In a specific embodiment, such as Figure 7 As shown, the driving component is a drive gear 25 fixed on the positioning plate 23. The drive gear 25 is fixed on the positioning plate 23 through a groove on the positioning plate 23. When the positioning plate 23 is connected to the hinge plate 21, the drive gear 25 on the positioning plate 23 meshes with the first gear tooth 221 on the bushing 22 and the sawtooth inner edge of the movement groove 24, so that the positioning plate 23 can move in the movement groove 24 under the action of the drive gear 25, so that the door panel 1 can move laterally during opening or closing.

[0069] Specifically, refrigerator doors are used frequently in daily life, making their opening and closing mechanisms particularly important. However, traditional refrigerator door hinge designs have some drawbacks. For example, a gap needs to be left when the door panel 1 is opened, preventing it from opening completely. This not only affects usability but also increases the floor space occupied.

[0070] The embedded door hinge 2 proposed in this application achieves the sliding effect of the door panel 1 through the cooperation of the receiving groove, the second gear 222, the bushing 22, and the receiving hole 11 on the door panel 1. For example, when the refrigerator is closed, if the right door needs to be opened, the receiving groove on the door panel 1 drives the second gear 222 to start rotating. The second gear 222 drives the bushing 22 to rotate synchronously, and the first gear 221, which meshes with the moving groove 24 at the upper end of the bushing 22, also rotates together. Since the first gear 221, the drive gear 25, and the moving groove 24 mesh with each other, the drive gear 25 and the hinge plate 21 will generate relative movement. However, the hinge plate 21 is fixed to the refrigerator body 3 and therefore cannot move; only the drive gear 25 can move.

[0071] The drive gear 25 is fixed on the positioning plate 23, thereby driving the positioning plate 23 and other components on the positioning plate 23 to move together. The bushing 22 is installed in the sleeve 231 on the positioning plate 23, and the bushing 22 is connected to the receiving hole 11, which will drive the receiving hole 11 to move together along the arrangement direction of the movement groove 24. The receiving hole 11 is also part of the door panel 1. At this time, the door panel 1 moves laterally while rotating and opening. The door panel 1 moves to the left while opening, realizing the effect of changing tracks. Even when the door panel 1 is in a right-angle fully open state, it will not protrude from the refrigerator body 3, so that there is no need to leave a gap for opening the door on both sides of the refrigerator, which is more beautiful and takes up less space.

[0072] The embedded door hinge 2 design has the following advantages: First, the track-changing effect can be achieved through simple gear transmission, with fewer parts and a simpler structure, thus reducing costs; second, the door panel 1 moves smoothly during opening and closing, opening and closing freely and being easy to operate; finally, the embedded door hinge 2 design makes the refrigerator more aesthetically pleasing, occupies less space, and is more practical.

[0073] Furthermore, the diameter of the drive gear 25 is half the diameter of the bushing 22.

[0074] The positioning plate 23 is a crucial component installed between the door frame and the door panel 1. It plays a positioning and guiding role during door opening, ensuring that the door panel 1 does not collide with the door frame. However, the lateral movement distance of the positioning plate 23 is a critical parameter that requires precise control. If the movement distance is too small, the positioning plate 23 will not be able to fully perform its positioning and guiding functions, resulting in the door panel 1 not being able to fully embed itself into the door frame. On the other hand, if the movement distance is too large, the positioning plate 23 may overextend, thereby damaging internal components.

[0075] In one specific embodiment, due to the characteristics of an embedded refrigerator, the opening angle of the door panel 1 is less than 90 degrees, so the maximum mileage length of the bushing 22 is half the circumference of the bushing 22. When the bushing 22 starts to rotate, the drive gear 25 meshing with the bushing 22 rotates under the drive of the bushing 22. The rotation directions of the bushing 22 and the drive gear 25 are opposite. Preferably, the rotational angular velocity of the drive gear 25 is half the rotational angular velocity of the bushing 22, and the diameter of the drive gear 25 is half the diameter of the bushing 22.

[0076] The above settings allow for precise control of the lateral movement of the positioning plate 23, ensuring the accuracy and stability of its movement, thereby protecting internal components and achieving optimal embedding performance.

[0077] Furthermore, one end of the hinge plate 21 is fixed to the housing 3, and the other end is provided with a movement groove 24. The positioning plate 23 is mounted on the hinge plate 21 via the fixing plate 26. In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the hinge plate 21 has a positioning hole 211 at the end near the housing 3, and the fixing plate 26 has flanges 261 on both sides. The flanges 261 are used to install the positioning plate 23 in the position of the movement groove 24.

[0078] In a specific embodiment, such as Figure 3 and Figure 8 As shown, one end of the hinge plate 21 is fixed to the refrigerator body 3. A movement groove 24 is provided at the end of the hinge plate 21 away from the refrigerator body 3. A positioning plate 23, which connects to components such as the bushing 22, is installed on the hinge plate 21 at the position of the movement groove 24 via a fixing plate 26. Multiple positioning holes 211 are provided at the end of the hinge plate 21 connected to the refrigerator body 3. These holes engage with the refrigerator body 3, thus fixing the embedded door hinge 2 to the refrigerator. Flanges 261 are provided on both sides of the fixing plate 26. The outer sides of the movement groove 24 on the hinge plate 21 have structures that cooperate with the flanges 261 of the fixing plate 26. Through this cooperation, the positioning plate 23 is installed on the hinge plate 21, allowing the bushing 22 and drive gear 25 on the positioning plate 23 to mesh with the movement groove 24. Simultaneously, the fixing plate 26 covers the positioning plate 23, providing protection and fixation for the various components on it.

[0079] Furthermore, a coil spring 27 is also provided on the hinge plate 21. The center of the coil spring 27 is fixed on the hinge plate 21, and the end of the coil spring 27 is welded to the movable part to realize automatic door closing.

[0080] In a specific embodiment, such as Figure 7 As shown, the embedded door hinge 2 proposed in this application also has an automatic closing function. Specifically, a coil spring 27 is installed on the hinge plate 21. The center of the coil spring 27 is welded to the hinge plate 21, and the end of the coil spring 27 is welded to the outside of the bushing 22 of the movable part. When the door is rotated under force, the coil spring 27 deforms under the force. When the door is no longer under force, due to the characteristics of the coil spring 27, it resets. Since one end is connected to the bushing 22, when the coil spring 27 resets, it applies a force to the bushing 22 opposite to that used when opening the door, causing the bushing 22 to rotate, thus completing the automatic closing. In practical use, this design can effectively avoid safety hazards caused by forgetting to close the door, and the user experience is more convenient and faster.

[0081] This application also proposes a refrigerator, such as Figure 9 , Figure 10 , Figure 11 As shown, this refrigerator has the aforementioned recessed door hinge 2. Even when the door panel 1 is fully open at a right angle, the refrigerator using the recessed door hinge 2 proposed in this application will not protrude from the refrigerator body 3, eliminating the need for reserved space on both sides of the refrigerator, resulting in a smaller footprint and a more aesthetically pleasing appearance.

[0082] Compared with existing technologies, the embedded door hinge proposed in this application achieves the effect of track changing through a simple gear transmission structure. This results in a simpler structure, fewer parts, increased service life, and reduced costs. Furthermore, most variable track hinges on the market are installed in the gap between the door and the cabinet due to their structural characteristics, making them extremely obtrusive when opening and closing the door. This hinge, however, has the same appearance and installation position as traditional fixed track hinges, offering higher concealment and a more aesthetically pleasing design.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An embedded door hinge, installed between a housing and a door panel, comprising a hinge plate disposed on the housing and a movable portion disposed on the door panel, characterized in that: The movable part and the hinge plate have a hinge structure that drives the door panel to rotate. The hinge structure includes an inset part disposed on the movable part, a movement groove disposed on the hinge plate to accommodate the movement of the movable part, and a drive member disposed in the movement groove to drive the inset part to move. The movable part moves along with the inset part, thereby driving the door panel to open and move along the arrangement direction of the movement groove. The movable part includes a positioning plate for mounting the embedded part, and the door panel is provided with a receiving hole for accommodating the embedded part. One end of the embedded part is fixed to the receiving hole, and the other end is movably mounted in the moving groove. The inner part is a cylindrical bushing, and the positioning plate is provided with a sleeve to accommodate the bushing. The end of the bushing connected to the moving groove is provided with a first gear tooth. The bushing rotates in the moving groove through the first gear tooth. The inner edge of the moving groove is designed with a serrated shape, and the first gear tooth meshes with the moving groove. The driving component is a driving gear disposed on the positioning plate. The positioning plate has a groove for fixing the driving gear, and the driving gear, the first gear tooth, and the moving groove mesh with each other, so that the positioning plate can move in the moving groove.

2. The embedded door hinge according to claim 1, characterized in that, The end of the bushing that connects to the receiving hole is provided with a second gear, and the bushing is fixed in the receiving hole by the second gear.

3. The embedded door hinge according to claim 2, characterized in that, The inner wall of the receiving hole is shaped to mesh with the second gear tooth, so that the bushing is fixed to the door panel.

4. The embedded door hinge according to claim 1, characterized in that, The diameter of the drive gear is half the diameter of the bushing.

5. The embedded door hinge according to claim 1, characterized in that, One end of the hinge plate is fixed to the housing, and the other end is provided with the motion groove. The positioning plate is mounted on the hinge plate through the fixing plate.

6. The embedded door hinge according to claim 5, characterized in that, The hinge plate has a positioning hole at one end near the housing, and the fixing plate has flanges on both sides. The flanges are used to install the positioning plate in the position of the motion slot.

7. The embedded door hinge according to claim 1, characterized in that, The hinge plate is also provided with a coil spring, the center of which is fixed to the hinge plate and the end of which is welded to the movable part to realize automatic door closing.

8. A refrigerator, comprising a door panel and a cabinet, characterized in that, The refrigerator has an embedded door hinge as described in any one of claims 1 to 7.

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