An adjustable torque notebook computer screen hinge

Abstract

The application discloses a notebook computer screen hinge with adjustable torque and relates to the technical field of hinges.The hinge comprises a first page sheet, a shaft sleeve arranged on one side of the first page sheet, an ear seat arranged on one side of a second page sheet and a pin shaft penetrating the shaft sleeve and the ear seat, the shaft sleeve further comprises a first damping sheet sleeved on the outer wall of the pin shaft, a second damping sheet is sleeved on the outer wall of the pin shaft and is attached to the first damping sheet, a torque adjusting assembly is arranged in the shaft sleeve and is used for driving soft nails to push the first damping sheet based on oil extrusion so as to increase the friction between the first damping sheet and the second damping sheet, and a reset assembly is arranged in the shaft sleeve and is used for driving oil backflow based on spring reset so as to reduce the friction between the first damping sheet and the second damping sheet. Through the application, the problem that the damping sheets continuously rub against each other in the long-term repeated opening and closing process of the existing notebook hinge, the surface of the damping sheets may be gradually worn and become smooth along with the increase of the use time, and the friction coefficient is reduced is solved.

Description

An adjustable torque laptop screen hinge Technical Field

[0001] This invention relates to the field of hinge technology, specifically to an adjustable torque laptop screen hinge. Background Technology

[0002] Adjustable torque laptop screen hinges are hinge systems that change the amount of damping when the screen opens and closes. Their core function is to keep the screen stable at different angles, preventing it from automatically sagging or bouncing up, while also allowing the user to open and close it smoothly and effortlessly.

[0003] For example, a hinge structure for a laptop computer with a fixed angle, as disclosed in announcement number CN215813899U, can effectively strengthen the connection between the first connecting plate and the second connecting plate by setting the first fastening component and the second fastening component. This makes it difficult for the fixed angle between the first connecting plate and the second connecting plate to change during use, thereby improving the user experience. However, existing laptop hinges still have some shortcomings.

[0004] Existing laptop hinges undergo frequent opening and closing movements over long-term use, and the damping plates inside the hinge rub against each other with each opening and closing. Over time, this continuous friction can gradually wear down the surfaces of the damping plates, smoothing out the originally slightly rough contact surfaces and reducing the friction between them. As friction decreases, the hinge's damping effect weakens, affecting the laptop's stability during opening and closing. For example, when the screen is opened to approximately 90 degrees, slight wobbling or instability may occur.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing laptop screen hinges. Summary of the Invention

[0006] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the purpose of this invention is to provide an adjustable torque laptop screen hinge to solve the problem mentioned in the background art: during long-term repeated opening and closing, the damping plates in existing laptop hinges continuously rub against each other, and as the usage time increases, the surface of the damping plates may gradually wear down and become smooth, leading to a decrease in the coefficient of friction.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an adjustable torque laptop screen hinge, comprising a first leaf, a bushing disposed on one side of the first leaf, an ear seat disposed on one side of the second leaf, and a pin passing through the bushing and the ear seat, wherein the bushing further comprises a first damping plate sleeved on the outer wall of the pin.

[0008] The second damping plate is sleeved on the outer wall of the pin and fits against the first damping plate;

[0009] A torque adjustment component installed inside the bushing, which uses oil extrusion to drive soft pins to push against the first damping plate to increase the friction between the first and second damping plates;

[0010] A reset assembly installed inside the bushing, based on spring reset to drive oil return flow, thereby reducing the friction between the first damping plate and the second damping plate;

[0011] The torque adjustment assembly includes a cam block sleeved on the outer wall of the pin, a cam rod abutting against the cam block, and a piston connected to the cam rod. A first oil chamber is provided inside the bushing, and a second oil chamber is provided at one end of the first oil chamber. A damping soft pin is slidably arranged in the second oil chamber.

[0012] The reset assembly includes a first spring sleeved on the outer wall of the cam rod and a second spring sleeved on the outer wall of the damping soft nail.

[0013] Preferably, the first oil chamber is connected to the second oil chamber, and both the first oil chamber and the second oil chamber are filled with hydraulic oil.

[0014] Preferably, one end of the first spring abuts against the side of the piston away from the cam rod, and the other end is fixedly connected to the inner wall of the first oil chamber.

[0015] Preferably, one end of the second spring abuts against the end of the damping soft nail, and the other end is fixedly connected to the inner wall of the second oil cavity.

[0016] Preferably, the outer wall of the cam block has an arc-shaped protrusion structure, and the end of the cam rod that contacts the cam block has an arc-shaped groove, which is adapted to the arc-shaped protrusion structure of the cam block.

[0017] Preferably, a wear-resistant rubber pad is provided at the end of the damping soft nail away from the second oil cavity, and the wear-resistant rubber pad is in contact with the surface of the first damping sheet.

[0018] Preferably, both the first damping sheet and the second damping sheet are made of metal, and the contact surfaces of both the first damping sheet and the second damping sheet are provided with anti-slip textures.

[0019] Preferably, the first damping plate and the second damping plate are stacked alternately, and both the first damping plate and the second damping plate are located on the side of the pin shaft near the lug.

[0020] Preferably, a sealing ring is fitted on the outer wall of the piston, and the sealing ring is in close contact with the inner wall of the first oil chamber.

[0021] Preferably, the outer wall of the damping soft nail is fitted with a sealing ring, and the sealing ring is in close contact with the inner wall of the second oil cavity.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. When the screen unfolds, the second leaf blade drives the pin shaft to rotate synchronously. The cam block on the outer wall of the pin shaft rotates accordingly. Its arc-shaped protrusion structure presses against the arc-shaped groove at the end of the cam rod. After the cam rod is subjected to force, it pushes the piston to move in the first oil chamber. The sealing ring on the outer wall of the piston ensures the sealing of the chamber and squeezes the hydraulic oil in the first oil chamber into the connected second oil chamber. The hydraulic oil pushes the damping soft pin in the second oil chamber towards the first damping plate. The wear-resistant rubber pad at the end of the damping soft pin adheres to and pushes against the surface of the first damping plate, increasing the pressure between the alternately stacked first and second damping plates. The anti-slip texture on the contact surface of the two further enhances friction. As the coefficient increases, the hinge torque also increases. Even if the damping plate wears to a certain extent, the pressure compensation driven by hydraulics can prevent the screen from becoming loose or wobbling at the 90° opening position. When the screen is closed, the second leaf rotates in the opposite direction, and the cam block rotates in the opposite direction with the pin, gradually releasing the squeezing force on the cam rod. At this time, the elastic restoring force of the first spring pushes the piston to quickly return to its original position. At the same time, the second spring drives the damping soft pin to retract synchronously. The hydraulic oil in the second oil chamber flows back to the first oil chamber, the pushing force of the damping soft pin on the first damping plate disappears, and the friction between the first damping plate and the second damping plate is reduced, making the screen close more smoothly.

[0024] 2. The first and second damping plates are made of metal with anti-slip texture. Combined with the wear-resistant rubber pads at the ends of the damping soft pins, the hard contact between the damping soft pins and the first damping plate is transformed into a flexible contact, reducing frictional wear between components and extending the overall service life of the hinge. The arc-shaped fitting structure of the cam block and cam rod increases the contact area between the two, making the squeezing force more uniform and avoiding wear of components caused by excessive local force. At the same time, the arc-shaped structure makes the movement of the cam rod smoother, preventing jamming or impact. The sealing ring on the outer wall of the piston and the sealing ring on the outer wall of the damping soft pin enhance the sealing of the oil chamber, prevent hydraulic oil leakage, and ensure smooth connection of torque adjustment and reset actions. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the overall structure of the notebook hinge of the present invention.

[0026] Figure 2 is a schematic diagram of the overall structure of the notebook hinge of the present invention from another angle.

[0027] Figure 3 is a schematic diagram of the internal damping adjustment structure of the notebook hinge of the present invention.

[0028] Figure 4 is a schematic diagram of the internal components of the damping adjustment structure of the present invention.

[0029] Figure 5 is a cross-sectional view of the damping adjustment structure of the present invention in the adjustment state.

[0030] Figure 6 is a cross-sectional view of the damping adjustment structure of the present invention from another angle in the adjustment state.

[0031] Figure 7 is a schematic cross-sectional view of the oil cavity in the damping adjustment structure of the present invention.

[0032] Figure 8 is an exploded view of the notebook hinge structure of the present invention.

[0033] In the diagram: 1. First leaf blade; 2. Second leaf blade; 3. Bushing; 4. Ear seat; 5. Pin; 6. First damping plate; 7. First oil chamber; 8. Cam rod; 9. Cam block; 10. Second oil chamber; 11. Second damping plate; 12. Piston; 13. First spring; 14. Damping soft pin; 15. Second spring. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please refer to Figures 1 to 8. The present invention provides a technical solution: an adjustable torque laptop screen hinge, including a first leaf 1, a bushing 3 disposed on one side of the first leaf 1, an ear seat 4 disposed on one side of the second leaf 2, and a pin 5 passing through the bushing 3 and the ear seat 4. The bushing 3 also includes a first damping piece 6 sleeved on the outer wall of the pin 5.

[0036] The second damping plate 11 is sleeved on the outer wall of the pin 5 and is in contact with the first damping plate 6;

[0037] A torque adjustment component installed inside the bushing 3, which uses oil extrusion to drive soft nails to push against the first damping plate 6 to increase the friction between the first damping plate 6 and the second damping plate 11;

[0038] A reset assembly installed inside the bushing 3, based on spring reset to drive oil return flow, thereby reducing the friction between the first damping plate 6 and the second damping plate 11;

[0039] The torque adjustment assembly includes a cam block 9 sleeved on the outer wall of the pin 5, a cam rod 8 abutting against the cam block 9, and a piston 12 connected to the cam rod 8. A first oil chamber 7 is provided inside the bushing 3, and a second oil chamber 10 is provided at one end of the first oil chamber 7. A damping soft nail 14 is slidably provided inside the second oil chamber 10.

[0040] The reset assembly includes a first spring 13 sleeved on the outer wall of the cam rod 8 and a second spring 15 sleeved on the outer wall of the damping soft nail 14.

[0041] In this embodiment, when the laptop screen is unfolded, the second page 2 drives the pin 5 to rotate synchronously. The cam block 9 on the outer wall of the pin 5 rotates accordingly and presses the cam rod 8. The cam rod 8 pushes the piston 12 to move in the first oil chamber 7, squeezing the hydraulic oil in the first oil chamber 7 into the second oil chamber 10. The hydraulic oil pushes the damping soft nail 14 to move towards the first damping plate 6. The end of the damping soft nail 14 pushes against the first damping plate 6, increasing the pressure between the first damping plate 6 and the second damping plate 11, and simultaneously increasing the friction, thereby realizing the torque adjustment of the hinge in the unfolded state.

[0042] The first oil chamber 7 is connected to the second oil chamber 10, and both the first oil chamber 7 and the second oil chamber 10 are filled with hydraulic oil.

[0043] In this embodiment, the first oil chamber 7 and the second oil chamber 10 are connected to provide a channel for bidirectional flow of oil, ensuring that the operation of the torque adjustment component and the reset component can be smoothly connected. The hydraulic oil has good sealing performance and fluidity, and can quickly transmit power under pressure, avoiding torque adjustment failure caused by oil leakage or poor flow.

[0044] One end of the first spring 13 abuts against the side of the piston 12 away from the cam rod 8, and the other end is fixedly connected to the inner wall of the first oil chamber 7.

[0045] In this embodiment, when the cam block 9 rotates with the pin 5 until it no longer presses against the cam rod 8, the elastic restoring force of the first spring 13 can push the piston 12 to move in the opposite direction, so that the piston 12 can quickly return to the initial position, while providing power for the oil return flow, ensuring the timeliness and stability of the reset action.

[0046] One end of the second spring 15 abuts against the end of the damping soft nail 14, and the other end is fixedly connected to the inner wall of the second oil cavity 10.

[0047] In this embodiment, during the hinge closing process, the elastic restoring force of the second spring 15 can assist the damping soft pin 14 to retract quickly, reducing the contact force between the damping soft pin 14 and the first damping plate 6. At the same time, in conjunction with the reset action of the piston 12, it accelerates the return of oil in the second oil chamber 10 to the first oil chamber 7, reducing the friction between the first damping plate 6 and the second damping plate 11, making the screen closing process smoother.

[0048] The outer wall of the cam block 9 has an arc-shaped protrusion structure, and the end of the cam rod 8 that contacts the cam block 9 has an arc-shaped groove, which is adapted to the arc-shaped protrusion structure of the cam block 9.

[0049] In this embodiment, the matching structure of the arc-shaped protrusion and the arc-shaped groove can increase the contact area between the cam block 9 and the cam rod 8, making the squeezing force more uniform and avoiding wear of parts caused by excessive local force. At the same time, the arc-shaped structure can make the movement of the cam rod 8 smoother and prevent jamming or impact.

[0050] A wear-resistant rubber pad is provided at the end of the damping soft nail 14 away from the second oil cavity 10, and the wear-resistant rubber pad is in contact with the surface of the first damping plate 6.

[0051] In this embodiment, the wear-resistant rubber pad has good elasticity and wear resistance, and can undergo slight deformation when pushing against the first damping plate 6, thereby increasing the contact area and improving the pushing effect, while avoiding hard friction between the damping soft nail 14 and the first damping plate 6.

[0052] Both the first damping plate 6 and the second damping plate 11 are made of metal, and the contact surfaces of both the first damping plate 6 and the second damping plate 11 are provided with anti-slip textures.

[0053] In this embodiment, the metal damping sheet has high strength and good wear resistance, and can withstand long-term friction and compression. The anti-slip texture can increase the friction coefficient between the damping sheets, making the torque adjustment effect more significant.

[0054] The first damping plate 6 and the second damping plate 11 are stacked alternately, and both the first damping plate 6 and the second damping plate 11 are located on the side of the pin 5 near the ear seat 4.

[0055] In this embodiment, the alternating stacked structure can significantly increase the contact area between the damping plates, further enhance the friction, and ensure that the hinge torque meets the support requirements of the screen. By placing the damping plates on the side closer to the ear seat 4, the force point can be closer to the rotation center of the hinge, thereby improving the accuracy of torque adjustment.

[0056] A sealing ring is fitted on the outer wall of the piston 12, and the sealing ring fits tightly against the inner wall of the first oil chamber 7.

[0057] In this embodiment, the sealing ring can enhance the sealing between the piston 12 and the inner wall of the first oil chamber 7, prevent hydraulic oil from leaking from the gap, ensure that the piston 12 can form a stable pressure difference during movement, and ensure the squeezing and backflow of the oil.

[0058] A sealing ring is fitted on the outer wall of the damping soft nail 14, and the sealing ring fits tightly against the inner wall of the second oil cavity 10.

[0059] In this embodiment, the sealing ring can prevent hydraulic oil leakage in the second oil chamber 10, avoid torque adjustment failure due to oil loss, and at the same time, the sealing ring can reduce the frictional resistance between the damping soft nail 14 and the inner wall of the second oil chamber 10, making the movement of the damping soft nail 14 smoother.

[0060] Working principle: When using this adjustable torque laptop screen hinge, firstly, the first leaf 1 is fixedly connected to the laptop body, and the second leaf 2 is fixedly connected to the laptop screen to complete the hinge assembly.

[0061] When the screen needs to be unfolded, the second leaf 2 is rotated, which drives the pin 5 to rotate synchronously. The cam block 9 on the outer wall of the pin 5 rotates accordingly. Its arc-shaped protrusion structure squeezes the arc-shaped groove at the end of the cam rod 8. After the cam rod 8 is subjected to force, it pushes the piston 12 to move in the first oil chamber 7. The sealing ring on the outer wall of the piston 12 ensures the sealing of the cavity and squeezes the hydraulic oil in the first oil chamber 7 into the connected second oil chamber 10. The hydraulic oil pushes the damping soft nail 14 in the second oil chamber 10 to move towards the first damping plate 6. The wear-resistant rubber pad at the end of the damping soft nail 14 is in contact with the surface of the first damping plate 6 and pushes against it, which increases the pressure between the alternately stacked first damping plate 6 and second damping plate 11. The anti-slip texture on the contact surface of the two further increases the coefficient of friction, and the hinge torque increases accordingly, thereby ensuring that the screen remains stable at any unfolding angle and will not automatically sink or shake.

[0062] When the screen needs to be closed, the second leaf 2 is rotated in the opposite direction, and the cam block 9 rotates in the opposite direction with the pin 5, gradually releasing the squeezing force on the cam rod 8. At this time, the elastic restoring force of the first spring 13 pushes the piston 12 to quickly return to its original position. At the same time, the second spring 15 drives the damping soft nail 14 to retract synchronously, and the hydraulic oil in the second oil chamber 10 flows back to the first oil chamber 7. The pushing force of the damping soft nail 14 on the first damping plate 6 disappears, and the friction between the first damping plate 6 and the second damping plate 11 is reduced, making the screen closing process smoother and less strenuous.

[0063] During this process, the sealing ring on the outer wall of the damping soft nail 14 can prevent oil leakage and ensure that the torque adjustment component and the reset component can be stably connected for a long time.

[0064] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable torque laptop screen hinge, comprising a first leaf (1), a bushing (3) disposed on one side of the first leaf (1), an ear seat (4) disposed on one side of a second leaf (2), and a pin (5) passing through the bushing (3) and the ear seat (4), characterized in that: The bushing (3) further includes a first damping plate (6) fitted onto the outer wall of the pin (5); a second damping plate (11) fitted onto the outer wall of the pin (5) and in contact with the first damping plate (6); a torque adjustment assembly disposed inside the bushing (3) based on oil pressure driving soft pins to push against the first damping plate (6) to increase the friction between the first damping plate (6) and the second damping plate (11); a reset assembly disposed inside the bushing (3) based on spring reset driving oil return to reduce the friction between the first damping plate (6) and the second damping plate (11); the torque adjustment assembly is further described in the original text. The torque adjustment assembly includes a cam block (9) sleeved on the outer wall of the pin (5), a cam rod (8) abutting against the cam block (9), and a piston (12) connected to the cam rod (8). A first oil chamber (7) is provided in the bushing (3), and a second oil chamber (10) is provided at one end of the first oil chamber (7). A damping soft nail (14) is slidably provided in the second oil chamber (10). The reset assembly includes a first spring (13) sleeved on the outer wall of the cam rod (8) and a second spring (15) sleeved on the outer wall of the damping soft nail (14).

2. The adjustable torque laptop screen hinge according to claim 1, characterized in that: The first oil chamber (7) is connected to the second oil chamber (10), and both the first oil chamber (7) and the second oil chamber (10) are filled with hydraulic oil.

3. The adjustable torque laptop screen hinge according to claim 1, characterized in that: One end of the first spring (13) abuts against the side of the piston (12) away from the cam rod (8), and the other end is fixedly connected to the inner wall of the first oil chamber (7).

4. The adjustable torque laptop screen hinge according to claim 1, characterized in that: One end of the second spring (15) abuts against the end of the damping soft nail (14), and the other end is fixedly connected to the inner wall of the second oil cavity (10).

5. The adjustable torque laptop screen hinge according to claim 1, characterized in that: The outer wall of the cam block (9) has an arc-shaped protrusion structure, and the end of the cam rod (8) that contacts the cam block (9) has an arc-shaped groove, which is adapted to the arc-shaped protrusion structure of the cam block (9).

6. The adjustable torque laptop screen hinge according to claim 1, characterized in that: The end of the damping soft nail (14) away from the second oil cavity (10) is provided with a wear-resistant rubber pad, and the wear-resistant rubber pad is in contact with the surface of the first damping sheet (6).

7. The adjustable torque laptop screen hinge according to claim 1, characterized in that: Both the first damping plate (6) and the second damping plate (11) are made of metal, and the contact surfaces of the first damping plate (6) and the second damping plate (11) are provided with anti-slip textures.

8. The adjustable torque laptop screen hinge according to claim 1, characterized in that: The first damping plate (6) and the second damping plate (11) are stacked alternately, and both the first damping plate (6) and the second damping plate (11) are located on the side of the pin (5) near the ear seat (4).

9. The adjustable torque laptop screen hinge according to claim 1, characterized in that: The outer wall of the piston (12) is fitted with a sealing ring, which is in close contact with the inner wall of the first oil chamber (7).

10. The adjustable torque laptop screen hinge according to claim 1, characterized in that: The outer wall of the damping soft nail (14) is fitted with a sealing ring, which is in close contact with the inner wall of the second oil cavity (10).

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