Balanced hinge mechanism with springback function

Abstract

The utility model provides a balance hinge mechanism with a springback function, which comprises a mounting bracket, a swing arm and a balance connecting part, the balance connecting part comprises a cam group, a middle shaft and a springback piece, the middle shaft penetrates through a door body and is fixedly connected with the mounting bracket, the cam group is buckled on the swing arm and is rotatably connected with the swing arm on the middle shaft, and the springback piece is fixedly connected with the middle shaft. A groove is formed in the outer end of the cam set, the center shaft is sleeved with the rebounding piece, one elastic end of the rebounding piece abuts against the interior of the groove of the cam set, and the other elastic end of the rebounding piece is connected with the swing arm in a matched and buckled mode. The door hinge is simple in structure and easy to assemble, has a rebound function, can change a door body from a closed state to an initial open state, is convenient to operate, can generate hinge force balanced with the gravity of the door body during opening, achieves a hovering effect, is reliable and practical, and ensures the use quality of a product.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically a balanced hinge mechanism with spring-back function. 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 transmission components with complex structures and poor transmission stability. Moreover, it is 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) The transmission components used in the existing hinges do not have a spring-back function when closed, and the door needs to be opened manually. If the door is under heavy load, the opening operation is difficult, which reduces the effectiveness of the product. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a balanced hinge mechanism with a spring-loaded function. It has a simple structure, is easy to assemble, and has a spring-loaded function, which can change the door from a closed state to an initial open state. It is easy to operate and can generate a hinge force that is balanced with the weight of the door during opening, achieving a hovering effect. It is reliable and practical, ensuring the quality of product use.

[0007] The purpose of this invention is achieved as follows: a balanced hinge mechanism with a spring-loaded function 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, close, or hover in the cabinet. The balanced connecting component includes a cam assembly, a central shaft, and a spring-loaded component. The central shaft passes through the door and is fixedly connected to the mounting bracket. The cam assembly is engaged with the swing arm and rotatably connected to the central shaft. The outer end of the cam assembly is provided with a groove. The spring-loaded component is sleeved on the central shaft, and one elastic end of the spring-loaded component abuts against the groove of the cam assembly. The other elastic end of the spring-loaded component is engaged with the swing arm.

[0008] Based on the above optimization, the cam assembly includes an inner cam and an outer cam. The inner cam is fastened to the rocker arm and rotates around the central axis as the rocker arm swings. The outer cam is contoured to match the inner cam and translates laterally along the central axis as the rocker arm swings, so that the spring-loaded element elastically acts on the rocker arm.

[0009] Based on the above optimization, the inner cam has a circular hole in the middle for fixed connection with the central shaft.

[0010] Based on the above optimization, the inner side of the inner cam is provided with a snap-fit ​​block that engages with the rocker arm, and the outer side of the inner cam is provided with an inner protruding edge that matches the contour of the outer cam.

[0011] Based on the above optimization, the outer cam has a mounting hole in the middle for fitting onto the central shaft, and the mounting hole has a plane for the outer cam to not rotate and only move laterally left and right.

[0012] Based on the above optimization, the inner side of the outer cam is provided with an outwardly protruding edge that matches the contour of the inner cam, and the outer side of the outer cam is provided with a groove that matches and engages with the spring-loaded component.

[0013] Based on the above optimization, the outer side of the outer cam is provided with a clearance to avoid interference with the spring-loaded component.

[0014] Based on the above optimization, the cabinet is equipped with a locking device for locking the door. The locking device includes a snap fastener and an elastic buckle. The snap fastener is installed on the outer connecting part of the door. The cabinet is provided with an inner groove for fitting the elastic buckle. The snap fastener locks onto the elastic buckle as the door closes, so that the door closes on the cabinet while the spring-loaded component deforms and stores force on the door. The elastic buckle separates from the snap fastener after being pressed, and the door changes from the closed state to the initial open state under the restoring elastic force of the spring-loaded component.

[0015] The advantages of this utility model are:

[0016] 1) Through the structural cooperation of the cam assembly, central shaft, and spring mechanism, this structure has a spring function, which allows the door to change from the closed state to the initial open state. It is easy to operate, suitable for use with doors of different loads, reliable and practical, and ensures the effectiveness of the product.

[0017] 2) The inner wheel and outer cam of the cam assembly with this structure, when the swing arm rotates, drive the inner cam and outer cam contours to cooperate, thereby pushing the outer cam to compress the spring, so that the spring provides corresponding pressure at the corresponding position of the door, generating sufficient friction to balance with the weight of the door itself, so as to achieve the door suspension effect. It is easy to use and has high transmission stability. Attached Figure Description

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

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

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

[0021] Figure 4 This is a structural diagram illustrating the preferred embodiment of the present invention in the open hover state.

[0022] Figure 5 This is a structural schematic diagram of another angle of the hovering state, representing a preferred embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure in the closed state of a preferred embodiment of the present invention.

[0024] Figure 7 This is a top view of the closed state of a preferred embodiment of the present invention.

[0025] Figure 8 This is a cross-sectional 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. Detailed Implementation

[0028] The present invention will now be further described with reference to the accompanying drawings.

[0029] According to the appendix Figures 1 to 10 As shown, the present invention discloses a balanced hinge mechanism with a spring-loaded function, comprising a mounting bracket 1 installed on a cabinet, a swing arm 2 installed on a door, and a balanced connecting component for swinging the swing arm 2 to open or close the door or hover it on the cabinet. The balanced connecting component includes a cam assembly 3, a central shaft 4, and a spring-loaded component 5. The central shaft 4 passes through the door and is fixedly connected to the mounting bracket 1. The cam assembly 3 is engaged with the swing arm 2 and rotatably connected to the central shaft 4. The outer end of the cam assembly 3 has a groove 324. The spring-loaded component 5 is sleeved on the central shaft 4, with one elastic end of the spring-loaded component 5 abutting against the groove 324 of the cam assembly 3, and the other elastic end of the spring-loaded component 5 engaging with the swing arm 2.

[0030] Reference Figures 1 to 10 As shown, in further detail, the cam assembly 3 includes an inner cam 31 and an outer cam 32. The inner cam 31 is fastened to the rocker arm 2 and rotates around the central axis 4 as the rocker arm 2 swings. The outer cam 32 is contour-fitted with the inner cam 31 and moves laterally on the central axis 4 as the rocker arm 2 swings, so that the spring 5 elastically acts on the rocker arm 2.

[0031] The inner cam 31 has a central hole 311 for fixed connection with the central shaft 4, a snap-fit ​​block 312 for engaging with the rocker arm 2 on its inner side, and an inner protruding edge 313 for engaging with the contour of the outer cam 32 on its outer side. Under the action of the central hole 311, the inner cam 31 can rotate around the central shaft 4 with the rocker arm 2.

[0032] Furthermore, the outer cam 32 has a mounting hole 321 in its middle for fitting onto the central shaft 4. The mounting hole 321 has a plane 322 for the outer cam 32 to not rotate and only move laterally left and right. The outer cam 32 is restricted by the plane 322, so it will not rotate and can only move laterally along the central shaft 4.

[0033] Furthermore, the inner side of the outer cam 32 is provided with an outer protruding edge 323 that matches the contour of the inner cam 31, and the outer side of the outer cam 32 is provided with a groove 324 that matches and engages with the spring member 5.

[0034] In practical applications, the springback element 5 in this structure is selected as a torsion spring.

[0035] That is, one end of the swing arm 2 is fixed to the door body by screws, and the other end of the swing arm 2 is rotatably connected to the central shaft 4. In use, since one elastic end of the torsion spring is engaged with the swing arm 2 and the other elastic end of the torsion spring is engaged with the groove 324 of the outer cam 32, the restoring force of the torsion spring is applied to the swing arm 2, so that the swing arm 2 is in the initial open state.

[0036] When the door is in the open position, the swing arm 2 rotates at a certain angle, the inner cam 31 compresses the spring member 5, and the inner convex edge 313 of the inner cam 31 is misaligned with the outer convex edge 323 of the outer cam 32 so that the inner cam 31 and the outer cam 32 are in sync, so that the spring member 5 provides corresponding pressure at the corresponding position of the door and generates sufficient friction to overcome the weight of the door and achieve a hovering effect.

[0037] As the door continues to open, the spring-loaded component 5 connects to the swing arm 2, and the spring-loaded component 5 rotates accordingly. Since the outer side of the outer cam 32 is provided with a wall, it effectively prevents the spring-loaded component 5 from interfering with the outer cam 32, ensuring that the door opens normally.

[0038] Reference Figures 1 to 10 As shown in the diagram, further detailed, the cabinet is equipped with a locking device for locking the door. The locking device includes a latch 6 and a spring-loaded latch 7. The latch 6 is installed on the outer connecting part of the door, and the cabinet has an inner groove for the spring-loaded latch 7. The latch 6 locks onto the spring-loaded latch 7 as the door closes, causing the door to close onto the cabinet while simultaneously deforming the spring-loaded member 5 and storing force on the door. When pressed, the spring-loaded latch 7 separates from the latch 6, and simultaneously, under the restoring elastic force of the spring-loaded member, the door changes from a closed state to an initially open state.

[0039] That is, when the door needs to be closed, pressure is applied to the door, causing the latch 6 to engage with the elastic latch 7, thus closing the door and locking it onto the cabinet, changing the door from its initial open state to its closed state. At this time, one elastic end of the return spring 5 is held against the outer cam 32, and the other elastic end of the return spring 5 deforms under force, causing the elastic force to act on the swing arm 2. When the door is pressed, the latch 6 separates from the elastic latch 7, the return spring 5 resets, providing an upward force to the swing arm 2 to push the door open automatically, thus restoring the door from its closed state to its initial open state.

[0040] The structure of this device, through the cooperation of the cam assembly 3, the central shaft 4, and the spring-loaded component 5, enables the door to return from the closed state to the initial open state. This makes the device easy to operate, suitable for doors with different loads, reliable and practical, and ensures the effectiveness of the product.

[0041] 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 with spring-back function of the present utility model are within the protection scope of the present utility model.

Claims

1. A balanced hinge mechanism with a spring-loaded function, comprising a mounting bracket (1) installed on a cabinet, a swing arm (2) installed on a door, and a balanced connecting component for swinging the swing arm (2) to open or close the door or hover it on the cabinet, characterized in that: The balancing connection component includes a cam assembly (3), a central shaft (4), and a spring-loaded component (5). The central shaft (4) passes through the door body and is fixedly connected to the mounting bracket (1). The cam assembly (3) is fastened to the swing arm (2) and rotatably connected to the central shaft (4) at the same time. The outer end of the cam assembly (3) is provided with a groove (324). The spring-loaded component (5) is sleeved on the central shaft (4), and one elastic end of the spring-loaded component (5) abuts against the groove (324) of the cam assembly (3). The other elastic end of the spring-loaded component (5) is matched and fastened to the swing arm (2).

2. The flat hinge mechanism with elastic function according to claim 1, characterized in that: The cam assembly (3) includes an inner cam (31) and an outer cam (32). The inner cam (31) is fastened to the rocker arm (2) and swings with the rocker arm (2) to rotate around the central axis (4). The outer cam (32) is contour-fitted with the inner cam (31) and moves laterally on the central axis (4) with the rocker arm (2) to make the spring element (5) elastically act on the rocker arm (2).

3. The compliant hinge mechanism of claim 2, wherein: The inner cam (31) has a round hole (311) in the middle for fixed connection with the central shaft (4).

4. The compliant hinge mechanism of claim 2, wherein: The inner cam (31) has a latching block (312) on its inner side that engages with the rocker arm (2), and the outer side of the inner cam (31) has an inner protruding edge (313) that engages with the contour of the outer cam (32).

5. The compliant hinge mechanism of claim 2, wherein: The outer cam (32) has a mounting hole (321) in the middle for fitting onto the central shaft (4). The mounting hole (321) has a plane (322) for the outer cam (32) to not rotate and only move laterally left and right.

6. The compliant hinge mechanism of claim 2, wherein: The outer cam (32) has an outer protruding edge (323) on its inner side that matches the contour of the inner cam (31), and the outer side of the outer cam (32) has a groove (324) that matches and engages with the spring member (5).

7. The compliant hinge mechanism of claim 2, wherein: The outer cam (32) is provided with a clearance (325) on its outer side to avoid interference with the spring-loaded component (5).

8. The compliant hinge mechanism of claim 1, wherein: The cabinet is provided with a locking device for locking the door. The locking device includes a snap fastener (6) and an elastic buckle (7). The snap fastener (6) is installed on the outer connecting part of the door. The cabinet is provided with an inner groove for fitting the elastic buckle (7). The snap fastener (6) locks onto the elastic buckle (7) as the door closes, so that the door closes on the cabinet while the spring-loaded member (5) deforms and stores force on the door. The elastic buckle (7) separates from the snap fastener (6) after being pressed, and the door changes from the closed state to the initial open state under the action of the spring-loaded member's restoring elastic force.

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