A hinge connection structure

Abstract

This utility model provides a hinge connection structure, including a cabinet, a door, a first hinge, and a second hinge. The first hinge includes a main support plate, one end of which is fixedly connected to the cabinet, and the other end of which is rotatably connected to a wheel. The wheel is fixedly connected to the door. A cam is provided on the wheel, and the working surface of the cam has at least three concave surfaces, with a convex surface between adjacent concave surfaces. A roller is movably connected to the main support plate, and an elastic element is provided between the main support plate and the roller. The elastic element always tends to allow the roller to abut against the working surface of the cam and to stop at the concave surface. The second hinge includes a hinge plate and an eccentric wheel. One end of the hinge plate is fixedly connected to the cabinet, and the other end is connected to a hinge shaft. One end of the eccentric wheel is fixedly connected to the door, and the other end of the eccentric wheel is fitted with a matching bearing between it and the hinge shaft. Compared with the prior art, this utility model has the advantages of simple structure, high strength, and long service life.

Description

Technical Field

[0001] This utility model relates to the technical field of hinges, and in particular to a hinge connection structure. Background Technology

[0002] Existing built-in cabinets are products that can be embedded in walls or hidden in corners, making the product appear as a single unit relative to the wall, resulting in a more aesthetically pleasing appearance. These products mainly consist of a main body with an opening and a door that opens and closes the opening, connected primarily by hinges. When these products are embedded in the wall, there should be a gap between the side of the main body and the wall, and the smaller the gap, the better; when the door is closed, the front of the door should be flush with the wall as much as possible; and when the door is open, it should not collide with the wall. However, current connection structures do not allow these products to meet these requirements, resulting in problems such as large gaps, the door not being flush with the wall, and the door easily colliding with the wall, leading to damage.

[0003] Currently, the main types of built-in cabinets on the market include refrigerators, wardrobes, washing machines, microwave ovens, and kitchen cabinets. Among these, refrigerators and their doors face particularly prominent issues with their load-bearing connection structures. Typical connection structures cannot withstand their weight and are prone to deformation and bending. Therefore, there is an urgent need to address these problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a hinge connection structure, including a cabinet, a door, a first hinge, and a second hinge. At least one set of the first hinges is connected between the cabinet and the door. The first hinge includes a main support plate, one end of which is fixedly connected to the cabinet, and the other end of which is rotatably connected to a wheel. The wheel is fixedly connected to the door. A cam is provided on the wheel, and the working surface of the cam has at least three concave surfaces, with a convex surface between each adjacent concave surface. A roller is movably connected to the main support plate, and an elastic element is provided between the main support plate and the roller. The elastic element always tends to cause the roller to abut against the working surface of the cam and to stop the roller at the concave surface. At least one set of second hinges is connected between the cabinet and the door. The second hinge includes a hinge plate and an eccentric wheel. One end of the hinge plate is fixedly connected to the cabinet, and the other end of the hinge plate is connected to a hinge shaft. One end of the eccentric wheel is fixedly connected to the door, and a matching bearing is installed between the other end of the eccentric wheel and the hinge shaft.

[0005] Furthermore, the main support plate is provided with a first limiting block, and the rotating wheel is provided with a first stop block that cooperates with the first limiting block; the hinge plate is provided with a second limiting block, and the eccentric wheel is provided with a second stop block that cooperates with the second limiting block; under the cooperation of the first limiting block and the first stop block, and under the cooperation of the second limiting block and the second stop block, the maximum opening angle of the door relative to the cabinet can be effectively limited to avoid the door from colliding with the wall, thereby protecting the door.

[0006] Furthermore, a first connecting plate extends and protrudes from the main support plate; a plurality of first reinforcing ribs are spaced apart at the junction of the main support plate and the first connecting plate; a second connecting plate is bent and formed on the hinge plate, and a plurality of second reinforcing ribs are spaced apart at the junction of the hinge plate and the second connecting plate; the first connecting plate facilitates the connection between the first hinge and the cabinet, and the structure of the first reinforcing ribs ensures strength and avoids the problem of deformation and bending of the first hinge; the second connecting plate facilitates the connection between the second hinge and the cabinet, and the structure of the second reinforcing ribs ensures strength and avoids the problem of deformation and bending of the second hinge.

[0007] Furthermore, the main support plate is C-shaped, and a protective shell is snapped into the opening of the main support plate, thereby forming an installation space inside the main support plate. The parts inside the installation space are isolated from the outside, which can protect the internal parts and effectively extend their service life. The main support plate is covered with a protective cover, which allows the main support plate and internal parts to be located inside the protective cover, improving the protection effect of the first hinge and making it more aesthetically pleasing.

[0008] Furthermore, one end of the elastic element is rotatably connected to the main support plate, and the other end of the elastic element is rotatably connected to a triangular plate, which is rotatably connected to the main support plate, and the roller is rotatably connected to the triangular plate.

[0009] Furthermore, a pivot is rotatably connected to the wheel, and the end of the pivot is fixedly connected to the main support plate. Gaskets are provided at both ends of the pivot; this makes the rotation process more stable and reliable, and ensures sufficient load-bearing capacity to avoid bending deformation.

[0010] Furthermore, the bearing is a thrust type, which makes the rotation process smoother and more reliable, and ensures sufficient axial load capacity.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, by providing a cam on the rotating wheel in the first hinge, with alternating concave and convex surfaces on the working surface of the cam, the roller, under the action of the elastic element, always tends to abut against the concave surface, allowing the rotating wheel to be suspended relative to the main support plate, that is, the door body to be suspended relative to the cabinet body. Furthermore, having at least two concave surfaces enables multi-stage opening, thereby preventing the door from being opened excessively and effectively avoiding the problem of the door colliding with the wall due to excessive opening force; Secondly, by connecting the cabinet body and the door body... A second hinge is provided, in which the eccentric wheel and the hinge plate are rotatably connected by a hinge shaft, and a matching bearing is installed between the eccentric wheel and the hinge shaft. This ensures smooth rotation while also providing strong load-bearing capacity, thus solving the technical problems in the prior art. Overall, this utility model has the advantages of simple structure, high strength and long service life. It can effectively prevent the door from colliding with the wall, keep the front of the door flush with the wall, minimize the gap between the wall and the product, and has sufficient load-bearing capacity to effectively prevent the hinge from bending and deforming. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the first hinge in this utility model; Figure 3 This is a top view of the rotating wheel in this utility model; Figure 4 This is an exploded view of the first hinge in this utility model; Figure 5 This is a schematic diagram of the overall structure of the second hinge in this utility model; Figure 6 This is an exploded view of the second hinge in this utility model.

[0013] The reference numerals in the attached drawings are explained as follows: 1-Cabinet body; 2-Door body; 3-First hinge; 31-Main support plate; 311-First limiting block; 312-First connecting plate; 313-First reinforcing rib; 32-Rotating wheel; 321-Cam; 3211-Concave surface; 3212-Convex surface; 322-First stop block; 323-First rotating hole; 324-First pin hole; 33-Roller; 34-Elastic element; 35-Triangle plate; 36-Pivot; 37-Washer; 4-Second hinge; 41-Hinge plate; 411-Second limiting block; 412-Second connecting plate; 413-Second reinforcing rib; 42-Eccentric wheel; 421-Second stop block; 422-Second rotating hole; 423-Second pin hole; 43-Hinge shaft; 44-Bearing; 5-Protective shell; 6-Protective cover; 7-Pin shaft; 8-Mounting plate. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0015] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0016] like Figures 1 to 6 As shown, this utility model provides a hinge connection structure, including a cabinet body 1, a door body 2, a first hinge 3 and a second hinge 4. At least one set of first hinges 3 are connected between the cabinet body 1 and the door body 2. The first hinge 3 includes a main support plate 31. One end of the main support plate 31 is fixedly connected to the cabinet body 1, and the other end of the main support plate 31 is rotatably connected to a wheel 32. The wheel 32 is fixedly connected to the door body 2. A cam 321 is provided on the wheel 32. The working surface of the cam 321 has at least three concave surfaces 3211, and a convex surface 3212 is provided between adjacent concave surfaces 3211. A roller 33 is movably connected to the main support plate 31. An elastic element 34 is provided between the main support plate 31 and the roller 33. The elastic element 34 always has the tendency to make the roller 33 abut against the working surface of the cam 321 and to make the roller 33 stop at the concave surface 3211. At least one set of second hinges 4 connects the cabinet body 1 and the door body 2. The second hinge 4 includes a hinge plate 41 and an eccentric wheel 42. One end of the hinge plate 41 is fixedly connected to the cabinet body 1, and the other end of the hinge plate 41 is connected to a hinge shaft 43. One end of the eccentric wheel 42 is fixedly connected to the door body 2, and a matching bearing 44 is installed between the other end of the eccentric wheel 42 and the hinge shaft 43. Preferably, the bearing 44 is a thrust type.

[0017] In some embodiments, reference Figure 3As shown, there are three concave surfaces 3211 and two convex surfaces 3212. In a clockwise direction, from the lowest point of the first concave surface 3211 to the highest point of the first convex surface 3212, the rotation angle of the cam 321 is from 0° to 20°. When the door 2 is opened relative to the cabinet 1 at this angle, it will close quickly and automatically under the force of the elastic element 34. From the highest point of the first convex surface 3212 to the lowest point of the second concave surface 3211, the rotation angle of the cam 321 is from 20° to 90°. To open the door 2 to this angle range, an external force needs to be applied to the door 2 so that the cam 321 overcomes the force of the elastic element 34, allowing the roller 33 to pass over the first convex surface 3212 from the lowest point of the first concave surface 3211. When the roller 33 reaches this angle range, under the force of the elastic element 34, the door 2 will slowly open relative to the cabinet 1 or remain suspended. This opening angle is the general opening angle or normal opening angle. From the lowest point of the second concave surface 3211 to the lowest point of the third concave surface 3211, the rotation angle of the cam 321 is from 90° to 115°. To open the door 2 to its maximum angle, an external force needs to be applied to the door 2 so that the cam 321 overcomes the elastic force of the elastic element 34, allowing the roller 33 to pass over the second convex surface 3212 from the lowest point of the second concave surface 3211 and finally abut against the lowest point of the third concave surface 3211. Therefore, the door 2 can only open to its maximum angle when the user applies external force to it again. It should be noted that the working surface and the non-working surface are smoothly transitioned by rounded corners, specifically the rounded corners at both ends of the working surface. It is worth mentioning that the highest position of the first convex surface 3212 can be set to the rotation angle of the corresponding cam 321 from 20° to 30°. This range is a transition section. When the opening angle of the door 2 relative to the cabinet 1 is within this range, under the action of the elastic element 34, the roller 33 will slowly roll back to the first concave surface 3211. At this time, the door 2 will close relatively slowly first, and then close quickly.

[0018] The main support plate 31 is provided with a first limiting block 311, and the rotating wheel 32 is provided with a first stop block 322 that cooperates with the first limiting block 311; the hinge plate 41 is provided with a second limiting block 411, and the eccentric wheel 42 is provided with a second stop block 421 that cooperates with the second limiting block 411. Specifically, through the cooperation of the first limiting block 311 and the first stop block 322, and the cooperation of the second limiting block 411 and the second stop block 421, the maximum opening angle of the door 2 relative to the cabinet 1 can be effectively limited to avoid the door 2 colliding with the wall, thereby protecting the door 2. Preferably, the maximum opening angle of the door 2 is 115°.

[0019] A first connecting plate 312 extends and protrudes from the main support plate 31; a plurality of first reinforcing ribs 313 are provided at intervals at the junction of the main support plate 31 and the first connecting plate 312; a second connecting plate 412 is bent and formed on the hinge plate 41, and a plurality of second reinforcing ribs 413 are provided at intervals at the junction of the hinge plate 41 and the second connecting plate 412.

[0020] The main support plate 31 is C-shaped, and a protective shell 5 is snapped into the opening of the main support plate 31; a protective cover 6 is provided on the outside of the main support plate 31.

[0021] One end of the elastic element 34 is rotatably connected to the main support plate 31, and the other end of the elastic element 34 is rotatably connected to a triangular plate 35, which is rotatably connected to the main support plate 31. The roller 33 is rotatably connected to the triangular plate 35. Specifically, the elastic element 34 is preferably a cylindrical spring.

[0022] A pivot 36 is rotatably connected to the rotating wheel 32. The end of the pivot 36 is fixedly connected to the main support plate 31, and washers 37 are provided at both ends of the pivot 36. Specifically, the rotating wheel 32 has a first rotating hole 323 for the pivot 36 to rotate, and a first pin hole 324 is also provided on the rotating wheel 32. One end of the eccentric wheel 42 has a second rotating hole 422 for the hinge pin 43 to rotate, and the other end of the eccentric wheel 42 has a second pin hole 423. Pins 7 are connected to the first pin hole 324 and the second pin hole 423 respectively, and the pins 7 are fixedly connected to the mounting plate 8, which is then fixedly connected to the door body 2. It is worth mentioning that by setting the first pin hole 324 non-coaxially with respect to the first pivot hole 323, and the second pin hole 423 non-coaxially with respect to the second pivot hole 422, the rotating wheel 32 and the eccentric wheel 42 used to connect the door body 2 can both protrude outward relative to the cabinet body 1. Thus, during actual installation, the first pin hole 324 and the second pin hole 423 can be set on the same axis, so that the axis of rotation of the door body 2 will not tilt, and the forces on each hinge will be balanced to ensure the load-bearing requirements.

[0023] In some embodiments, reference Figure 1 As shown, the hinge connection structure of this utility model, when applied to a refrigerator, allows the gap between the side of the cabinet 1 and the wall to reach 4mm when the refrigerator is embedded in the wall; when the door 2 is closed, the front of the door 2 remains flush with the wall; and the door 2 will not collide with the wall even when opened to its maximum angle. Specifically, the upper end of the upper door and the lower end of the lower door of the refrigerator are both hinges 3 of this application, while the lower end of the upper door and the upper end of the lower door are hinges 4 of this application. Of course, when the door 2 is larger or the load-bearing requirement is higher, the first hinge 3 and / or the second hinge 4 can be added accordingly to meet the actual needs.

[0024] In summary, the technical solution of this utility model can fully and effectively achieve the aforementioned objectives. Furthermore, the structure and functional principles of this utility model have been fully verified in the embodiments, achieving the expected effects and objectives. Without departing from the principles and essence of this utility model, various changes or modifications can be made to the embodiments. Therefore, this utility model includes all substitutions within the scope mentioned in the patent application claims, and any equivalent changes made within the scope of this patent application are within the scope of the patent application.

Claims

1. A hinge connecting structure comprising a cabinet body (1), a door body (2), a first hinge (3) and a second hinge (4), characterized in that: At least one set of first hinges (3) are connected between the cabinet (1) and the door (2). The first hinge (3) includes a main support plate (31). One end of the main support plate (31) is fixedly connected to the cabinet (1). The other end of the main support plate (31) is rotatably connected to a wheel (32). The wheel (32) is fixedly connected to the door (2). The wheel (32) is provided with a cam (321). The working surface of the cam (321) is provided with at least three concave surfaces (3211), and a convex surface (3212) is provided between adjacent concave surfaces (3211). A roller (33) is movably connected to the main support plate (31). An elastic element (34) is provided between the main support plate (31) and the roller (33). The elastic element (34) always has the tendency to make the roller (33) abut against the working surface of the cam (321) and stop the roller (33) at the concave surface (3211). At least one set of second hinges (4) is connected between the cabinet (1) and the door (2). The second hinge (4) includes a hinge plate (41) and an eccentric wheel (42). One end of the hinge plate (41) is fixedly connected to the cabinet (1), and the other end of the hinge plate (41) is connected to a hinge shaft (43). One end of the eccentric wheel (42) is fixedly connected to the door (2), and the other end of the eccentric wheel (42) is fitted with a matching bearing (44) between it and the hinge shaft (43).

2. The hinge connection structure according to claim 1, characterized in that: The main support plate (31) is provided with a first limiting block (311), and the rotating wheel (32) is provided with a first stop block (322) that cooperates with the first limiting block (311); the hinge plate (41) is provided with a second limiting block (411), and the eccentric wheel (42) is provided with a second stop block (421) that cooperates with the second limiting block (411).

3. The hinge connection structure according to claim 1, characterized in that: The main support plate (31) extends and protrudes a first connecting plate (312); a plurality of first reinforcing ribs (313) are provided at intervals at the junction of the main support plate (31) and the first connecting plate (312); a second connecting plate (412) is bent and formed on the hinge plate (41), and a plurality of second reinforcing ribs (413) are provided at intervals at the junction of the hinge plate (41) and the second connecting plate (412).

4. The hinge connection structure according to claim 1, characterized in that: The main support plate (31) is C-shaped, and a protective shell (5) is snapped into the opening of the main support plate (31); a protective cover (6) is provided on the outside of the main support plate (31).

5. The hinge connection structure according to claim 1, characterized in that: One end of the elastic element (34) is rotatably connected to the main support plate (31), and the other end of the elastic element (34) is rotatably connected to a triangular plate (35). The triangular plate (35) is rotatably connected to the main support plate (31), and the roller (33) is rotatably connected to the triangular plate (35).

6. The hinge connection structure according to claim 1, characterized in that: A pivot (36) is rotatably connected to the wheel (32). The end of the pivot (36) is fixed to the main support plate (31). Gaskets (37) are provided at both ends of the pivot (36).

7. The hinge connection structure according to claim 1, characterized in that: The bearing (44) is a thrust type.

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