Balanced hinge mechanism

Abstract

The utility model provides a balance hinge mechanism which comprises an installation support, a swing arm and a balance connecting component, the balance connecting component comprises an inner cam, an outer cam, a middle shaft and an elastic locking assembly, the middle shaft penetrates through a door body and is fixedly connected with the installation support, the inner cam is installed on the swing arm and rotates around the middle shaft along with swing of the swing arm, and the outer cam is installed on the outer cam. The outer cam is in sliding connection with the inner cam, meanwhile, the outer cam and the inner cam transversely move in the middle shaft under the pushing effect of the inner cam, one elastic end of the elastic locking assembly is fixedly connected to the end of the middle shaft, and the other elastic end of the elastic locking assembly is connected to the outer cam. The door hinge is simple in structure, easy to assemble and convenient to operate, can generate hinge force balanced with the gravity of a door body during opening, achieves the hovering effect, is high in applicability, and ensures the use quality of products.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically a balanced hinge mechanism. Background Technology

[0002] Existing hinges are widely used in furniture and appliances. The structure of an existing hinge generally includes a mounting base installed on the door, a fixed base installed on the cabinet, and a transmission component hinged between the mounting base and the fixed base. The transmission component enables the mounting base to open and close on the fixed base, thereby enabling the door to open and close on the cabinet.

[0003] However, the hinge structure described above has the following shortcomings in practical applications:

[0004] 1) Existing hinges use complex transmission components, which make it difficult to achieve the open-and-hover function. To achieve the hover function, other transmission components need to be added, resulting in a larger size. This makes them unsuitable for other smaller furniture and appliances, thus limiting their use.

[0005] 2) Existing concealed hinges require high precision assembly and need to be assembled by professionals; otherwise, the product's performance will be affected, its stability will be reduced, and its lifespan will be shortened. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a balanced hinge mechanism that is simple in structure, easy to assemble, convenient to operate, and can generate a hinge force that is balanced with the weight of the door during opening, achieving a hovering effect. It has strong applicability and ensures the quality of product use.

[0007] The purpose of this invention is achieved as follows: a balanced hinge mechanism includes a mounting bracket installed on a cabinet, a swing arm installed on a door, and a balanced connecting component for the swing arm to swing so that the door can open or close or be suspended on the cabinet. The balanced connecting component includes an inner cam, an outer cam, a central shaft, and an elastic locking assembly. The central shaft passes through the door and is fixedly connected to the mounting bracket. The inner cam is installed on the swing arm and rotates around the central shaft as the swing arm swings. The outer cam is slidably connected to the inner cam and moves laterally across the central shaft under the pushing action of the inner cam. One elastic end of the elastic locking assembly is fixedly connected to the end of the central shaft, and the other elastic end of the elastic locking assembly is connected to the outer cam.

[0008] Based on the above optimization, the inner cam is rotatably connected to the central shaft through a circular hole.

[0009] Based on the above optimization, the outer cam is sleeved on the central shaft through a mounting hole, and the mounting hole is provided with a plane to restrict the outer cam from rotating and to allow it to move laterally only.

[0010] Based on the above optimization, the swing arm is provided with a fastening position for fastening with the inner cam, and the inner cam is provided with a snap-fit ​​block for fastening with the fastening position.

[0011] Based on the above optimization, the inner cam is provided with an inner inclined protrusion, and the outer cam is provided with an outer inclined protrusion. When the inner inclined protrusion slides to the limit position of the outer inclined protrusion as the swing arm swings, the inner cam and the outer cam are misaligned to make the elastic locking component in a relaxed state, thereby forming a fully open balanced connection combination component with a fully open hovering effect between the inner cam and the outer cam.

[0012] Based on the above optimization, the inner cam is provided with an inner inclined protrusion, and the outer cam is provided with an outer inclined protrusion. When the inner inclined protrusion slides to the inclined surface of the outer inclined protrusion as the swing arm swings, the inner cam pushes the outer cam to move outward so that the elastic locking component is squeezed to generate a hinge force that balances the downward gravity of the door body, thereby forming an opening balance connection assembly with a hovering effect during opening by the inner cam and the outer cam.

[0013] Based on the above optimization, the inner cam is provided with an inner inclined protrusion, and the outer cam is provided with an outer inclined protrusion. When the inner inclined protrusion slides to the end face of the outer inclined protrusion as the swing arm swings, the elastic locking component is reset without being squeezed and does not generate hinge force, so that the inner cam and the outer cam form a self-closing connection assembly with automatic closing function under the action of the door body's own weight.

[0014] Based on the above optimization, the elastic locking assembly includes a spring and a locking element. The locking element is threadedly connected to the end of the central shaft, and the two elastic ends of the spring are respectively fixedly connected to the outer cam and the locking element.

[0015] The advantages of this utility model are:

[0016] 1) Through the structural cooperation of the inner cam, outer cam, central shaft and elastic locking component of the balancing connecting parts, when the door rotates outward by a certain angle, the inner cam pushes the outer cam, causing the elastic locking component to be squeezed and generate a hinge force. This hinge force is balanced with the downward gravity of the door to achieve a hovering effect. It is convenient to use and has high transmission stability.

[0017] 2) The balanced connection components using this structure are simple in structure, reduce the use of parts, are easy to assemble, convenient to operate, and are suitable for use in different products, making them highly adaptable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0019] Figure 2This is a schematic diagram of the structure of the preferred embodiment of the present invention in its fully opened state.

[0020] Figure 3 This is a structural schematic diagram of the preferred embodiment of the present invention in its fully opened state from another angle.

[0021] Figure 4 This is a front view of the preferred embodiment of the present invention in its fully opened state.

[0022] Figure 5 This is a structural diagram illustrating the preferred embodiment of the present invention in the open hover state.

[0023] Figure 6 Open the main view of the hover state for the preferred embodiment of this utility model.

[0024] Figure 7 This is a schematic diagram of the structure in the closed state of a preferred embodiment of the present invention.

[0025] Figure 8 This is a front view of the closed state of a preferred embodiment of the present invention.

[0026] Figure 9 This is an exploded view of a preferred embodiment of the present invention.

[0027] Figure 10 This is an exploded view of another preferred embodiment of the present invention.

[0028] Figure 11 This is a schematic diagram of the internal cam structure in a preferred embodiment of the present invention.

[0029] Figure 12 This is a structural schematic diagram of the inner cam at another angle in a preferred embodiment of the present invention.

[0030] Figure 13 This is a schematic diagram of the structure of the external cam in a preferred embodiment of the present invention.

[0031] Figure 14 This is a structural schematic diagram of the external cam at another angle, which is a preferred embodiment of the present invention. Detailed Implementation

[0032] The present invention will now be further described with reference to the accompanying drawings.

[0033] According to the appendix Figures 1 to 14As shown, the balanced hinge mechanism of this utility model includes a mounting bracket 1 installed on a cabinet, a swing arm 2 installed on a door, and a balanced connecting component for the swing arm 2 to swing so that the door can open, close, or hover on the cabinet. The balanced connecting component includes an inner cam 3, an outer cam 4, a central shaft 5, and an elastic locking assembly 6. The central shaft 5 passes through the door and is fixedly connected to the mounting bracket 1. The inner cam 3 is installed on the swing arm 2 and rotates around the central shaft 5 as the swing arm 2 swings. The outer cam 4 is slidably connected to the inner cam 3 and moves laterally across the central shaft 5 under the pushing action of the inner cam 3. One elastic end of the elastic locking assembly 6 is fixedly connected to the end of the central shaft 5, and the other elastic end of the elastic locking assembly 6 is connected to the outer cam 4.

[0034] In practical applications, the inner cam 3 is rotatably connected to the central shaft 5 through a circular hole 31. That is, the inner cam 3 has a circular hole 31 inside, which can be driven by the rocker arm 2 to rotate the inner cam 3 around the central shaft 5.

[0035] Furthermore, the outer cam 4 is fitted onto the central shaft 5 through a mounting hole 41, and the mounting hole 41 is provided with a plane 42 to restrict the outer cam 4 from rotating and allow it to translate laterally. Therefore, the central shaft 5 and the outer cam 4 are restricted by the plane 42, and the outer cam 4 will not rotate, but can only translate laterally along the central shaft 5.

[0036] Furthermore, the swing arm 2 is provided with a fastening position 21 for fastening with the inner cam 3, and the inner cam 3 is provided with a snap-fit ​​block 32 for fastening with the fastening position 21.

[0037] The elastic locking assembly 6 includes a spring 61 and a locking member 62. The locking member 62 is threaded to the end of the central shaft 5, and the two elastic ends of the spring 61 are fixedly connected to the outer cam 4 and the locking member 62, respectively.

[0038] The balanced connection component using this structure is simple in structure, easy to assemble, has stable transmission performance, and is suitable for assembling products of different sizes, making it highly adaptable.

[0039] Reference Figures 1 to 14 As shown in the diagram, further detailed, the inner cam 3 has an inwardly inclined protruding edge 33, and the outer cam 4 has an outwardly inclined protruding edge 43. When the inwardly inclined protruding edge 33 slides to the limiting position 46 of the outwardly inclined protruding edge 43 as the swing arm 2 swings, the inner cam 3 and the outer cam 4 are misaligned to allow the elastic locking assembly 6 to be in a relaxed state, thereby generating a hinge force that balances the downward gravity of the door, so that the inner cam 3 and the outer cam 4 form a fully open, balanced connection assembly with a fully open and hovering effect.

[0040] When the door is in the open position, the inner inclined protrusion 33 and the outer inclined protrusion 43 are misaligned, so that the inner cam 3 and the outer cam 4 are misaligned, so that the elastic locking assembly 6 is in a relaxed state to generate a hinge force that balances the downward gravity of the door, and the door can be fully opened and suspended in this position.

[0041] Reference Figures 1 to 14 As shown in the diagram, further detailed, the inner cam 3 has an inner inclined protruding edge 33, and the outer cam 4 has an outer inclined protruding edge 43. When the inner inclined protruding edge 33 slides to the inclined surface 44 of the outer inclined protruding edge 43 as the swing arm 2 swings, the inner cam 3 pushes the outer cam 4 outward to compress the elastic locking component 6, generating a hinge force that balances the downward gravity of the door body. This results in the inner cam 3 and the outer cam 4 forming an opening balance connection assembly with a hovering effect during opening.

[0042] When the door can push the inner cam 3 to rotate to a certain angle, and the inner inclined protrusion 33 moves along the inclined surface 44 of the outer inclined protrusion 43, the inner cam 3 pushes the outer cam 4 to move outward, the elastic locking component 6 is squeezed to generate a force value, and a hinge force is generated. The hinge force and the downward gravity of the door are balanced to achieve the effect of the door opening and hovering.

[0043] Reference Figures 1 to 14 As shown in the diagram, further detailed, the inner cam 3 has an inner inclined protruding edge 33, and the outer cam 4 has an outer inclined protruding edge 43. When the inner inclined protruding edge 33 slides to the end face 45 of the outer inclined protruding edge 43 as the swing arm 2 swings, the elastic locking component 6 is reset and not squeezed, thus not generating a hinge force, so that the inner cam 3 and the outer cam 4 form a self-closing connection assembly with an automatic closing function under the weight of the door.

[0044] When the door pushes the inner cam 3 to rotate to a certain angle, the curvature of the outer cam 4 changes from increasing to balancing, the elastic locking component 6 is no longer squeezed, the balance between the hinge force and the downward gravity of the door is broken, and the self-closing effect is achieved under the action of the downward gravity of the door.

[0045] It is worth noting that the inner inclined protrusion 33 of the inner cam 3 in this structure matches the shape of the outer inclined protrusion 43 of the outer cam 4.

[0046] Thus, through the structural cooperation of the inner cam 3, outer cam 4, central shaft 5, and elastic locking component 6 of the balancing connecting parts, the structure is simple, easy to use, has high transmission stability, is suitable for products with limited space, and has strong applicability.

[0047] The above specific embodiments are only specific implementations of the present utility model with better effects. All structures that are the same as or equivalent to the balance hinge mechanism of the present utility model are within the protection scope of the present utility model.

Claims

1. A counterbalanced hinge mechanism, characterized by: Balanced hinge mechanism includes mounting bracket (1) installed on cabinet body, swing arm (2) installed on door body and balanced connecting component for swing arm (2) swing to open or hover door body, the balanced connecting component includes inner cam (3), outer cam (4), middle shaft (5), elastic locking assembly (6), the middle shaft (5) is fixedly connected through door body and mounting bracket (1), the inner cam (3) is installed on swing arm (2) and rotates around middle shaft (5) with swing arm (2) swing, the outer cam (4) is slidably connected with inner cam (3) while being laterally translated on middle shaft (5) under the pushing action of inner cam (3), one elastic end of the elastic locking assembly (6) is fixedly connected on the end of middle shaft (5), and the other elastic end of elastic locking assembly (6) is connected on outer cam (4).

2. The balanced hinge mechanism of claim 1, wherein: The inner cam (3) is rotatably connected with the middle shaft (5) through the round hole (31).

3. The balanced hinge mechanism of claim 1, wherein: The outer cam (4) is sleeved on the middle shaft (5) through the mounting hole (41), and the mounting hole (41) is provided with a plane (42) for limiting the outer cam (4) from rotating and only laterally translating.

4. The balanced hinge mechanism of claim 1, wherein: The swing arm (2) is provided with a buckling position (21) for buckling the inner cam (3), and the inner cam (3) is provided with a buckle block (32) matched with the buckling position (21) for buckling.

5. The balanced hinge mechanism of claim 1, wherein: The inner cam (3) is provided with an inner inclined convex edge portion (33), the outer cam (4) is provided with an outer inclined convex edge portion (43), when the inner inclined convex edge portion (33) slides to the limiting position (46) of the outer inclined convex edge portion (43) with the swing arm (2) swinging, the inner cam (3) is misaligned with the outer cam (4) to make the elastic locking assembly (6) in a relaxed state, so that the inner cam (3) and the outer cam (4) form a fully open balanced connecting assembly with a fully open hovering effect.

6. The balanced hinge mechanism of claim 1, wherein: The inner cam (3) is provided with an inner inclined convex edge portion (33), the outer cam (4) is provided with an outer inclined convex edge portion (43), when the inner inclined convex edge portion (33) slides to the inclined surface (44) of the outer inclined convex edge portion (43) with the swing arm (2) swinging, the inner cam (3) pushes the outer cam (4) to move outward to make the elastic locking assembly (6) be squeezed to generate a hinge force balanced with the downward gravity of the door body, so that the inner cam (3) and the outer cam (4) form an opening balanced connecting combination with a hovering effect during opening.

7. The balanced hinge mechanism of claim 1, wherein: The inner cam (3) is provided with an inner inclined convex edge portion (33), the outer cam (4) is provided with an outer inclined convex edge portion (43), when the inner inclined convex edge portion (33) slides to the end surface (45) of the outer inclined convex edge portion (43) with the swing arm (2) swinging, the elastic locking assembly (6) is reset without being squeezed and without generating a hinge force, so that the inner cam (3) and the outer cam (4) form a self-closing connecting combination with an automatic closing function under the action of the self-weight of the door body.

8. The balanced hinge mechanism of claim 1, wherein: The elastic locking assembly (6) comprises a spring (61) and a locking piece (62), the locking piece (62) is threadedly connected to the end of the middle shaft (5), and the two elastic ends of the spring (61) are fixedly connected to the outer cam (4) and the locking piece (62) respectively.

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