Elliptical balance suspension keyboard rotating shaft and use method thereof
By introducing an elliptical balanced shaft and magnetic structure into the keyboard shaft, dynamic adjustment of the keyboard center of gravity is solved, and the keyboard's instability caused by traditional rotation shafts is improved, and the keyboard's adjustment performance and user experience are improved.
Patent Information
- Application Number
- CN202510192893.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-06-20
AI Technical Summary
The traditional keyboard resonator cannot change the fulcrum of the keyboard center of gravity after being opened, causing the keyboard to move backwards when in use, and the overall backwards are unstable, affecting the user's operating experience and comfort.
An elliptical balanced suspended keyboard rotation shaft is designed. By setting up an elliptical balanced shaft, balanced magnetic block, flipped magnetic block and torque adjustment components, the overall center of gravity adjustment of the keyboard when opening and closing is achieved, forming a self-stable structure to offset the center of gravity offset caused by inclination changes.
The angle adjustment performance of the keyboard is effectively optimized, avoiding shaking caused by unstable center of gravity, providing a delicate opening and closing feel, and improving user operating experience and comfort.
Smart Images
Figure CN120179083A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of keyboard hinges, and specifically provides an elliptical balanced floating keyboard hinge and its usage method. Background Art
[0002] As an innovative input device, the floating keyboard has been favored by a large number of users due to its unique floating design and portability. The keyboard hinge is one of the core components of the floating keyboard. Through a unique design, it realizes a stable connection and flexible adjustment between the keyboard and electronic devices such as tablets, ensuring the stability of the keyboard during use, avoiding accidental detachment or loosening caused by external forces or improper operations, and at the same time providing users with extremely flexible adjustment functions; With its delicate structural design, the keyboard hinge can provide a certain damping force, enabling users to feel a delicate feedback when adjusting the keyboard angle, neither being too loose nor difficult to operate with effort, achieving a perfect balance between comfort and practicality, and effectively preventing the keyboard from changing its angle accidentally under unconscious touch, ensuring the concentration and efficiency during work or entertainment; Although traditional hinges can adjust the angle well, since the traditional hinge cannot change the keyboard's center of gravity fulcrum after being opened, it will cause the center of gravity of the keyboard to shift backward during use, resulting in the overall backward tilt and instability of the keyboard, increasing the unstable factors during use and affecting the user's operation experience and comfort. Therefore, an elliptical balanced floating keyboard hinge and its usage method are proposed to solve the above problems. Summary of the Invention
[0003] The purpose of the present invention is to provide an elliptical balanced floating keyboard hinge and its usage method to solve the problem that since the traditional hinge cannot change the keyboard's center of gravity fulcrum after being opened, it will cause the center of gravity of the keyboard to shift backward during use, resulting in the overall backward tilt and instability of the keyboard, increasing the unstable factors during use and affecting the user's operation experience and comfort.
[0004] To achieve the above purpose, the present invention provides the following technical solutions: An elliptical balanced suspension keyboard rotating shaft and its usage method, comprising a fixed hinge, two decorative fixed covers, and two dust-proof decorative covers. The two decorative fixed covers are symmetrically installed on one side of the main shaft assembly. A left hinge is installed inside the main shaft assembly, and a right hinge assembly is installed inside the main shaft assembly. An axle core assembly is arranged inside the main shaft assembly. The main shaft assembly includes an elliptical balanced shaft rod. An axle rod groove is opened inside the elliptical balanced shaft rod, an activity groove is opened inside the elliptical balanced shaft rod, a limit card slot is opened inside the elliptical balanced shaft rod, a cover groove is opened inside the elliptical balanced shaft rod, a limit strip is fixedly connected inside the elliptical balanced shaft rod, and a balance magnet is arranged inside the elliptical balanced shaft rod. The axle core assembly includes a threaded axle core rod, and a flipping magnet is adhesively fixed to the outside of the threaded axle core rod. A fixed hinge is fixedly connected to the side of the main shaft assembly where the decorative fixed cover is not installed. The two dust-proof decorative covers are respectively connected to the left hinge and the right hinge assembly through bolts.
[0005] As a further optimized content of the present invention, wherein: the opening length of the axle rod groove is equal to the transverse length of the elliptical balanced shaft rod, the position of the activity groove corresponds to the position of the decorative fixed cover one by one, the limit card slot is communicated with the activity groove, and the position of the cover groove corresponds to the position of the dust-proof decorative cover one by one.
[0006] As a further optimized content of the present invention, wherein: a plurality of limit strips are provided, and the plurality of limit strips are evenly and equidistantly distributed inside the axle rod groove. A balance magnet is arranged between every two limit strips. The outside of the balance magnet is arc-shaped and closely adheres to the inner side of the axle rod groove. An arc-shaped groove is arranged on one side of the balance magnet, and a cylindrical hole is axially opened in the balance magnet.
[0007] As a further optimized content of the present invention, wherein: the right hinge assembly includes a movable hinge. A wire groove is opened on one side of the movable hinge, a positioning hole is opened inside the movable hinge, a hinge shaft is fixedly connected to one side of the movable hinge, a connecting axle core is installed inside the hinge shaft, a first dust-proof sealing gasket is fixedly connected to the outside of the connecting axle core, an internal threaded groove is opened at one end of the connecting axle core, a damper is fixedly installed inside the hinge shaft, and one end of the damper is fixedly connected to a torque adjusting component.
[0008] As a further optimized content of the present invention, wherein: the opening depth of the wire groove is half of the thickness of the movable hinge, the opening shape of the positioning hole is cylindrical, the hinge shaft, the connecting axle core, and the first dust-proof sealing gasket are on the same axis, and a part of the torque adjusting component is arranged inside the hinge shaft.
[0009] As a further optimization of the present invention, wherein: threads matching the inner wall of the built-in thread groove are provided on the outer sides of both ends of the threaded shaft core rod, the thickness of the flipping magnet gradually increases from both ends to the middle, the outer surface material of the flipping magnet is high-strength alloy steel, and the flipping magnet and the balancing magnet repel each other magnetically.
[0010] As a further optimization of the present invention, wherein: the torque adjustment assembly includes a grooved column, an extrusion resistance strip is fixedly connected to the outer side of the grooved column, a semi-circular groove is opened on the inner side of the grooved column, a second dust-proof sealing gasket is fixedly connected to the outer side of the grooved column, a torsion spring is installed inside the grooved column, and one end of the torsion spring is fixedly connected to a chuck.
[0011] As a further optimization of the present invention, wherein: the grooved column is cylindrical in shape, the central axis of the grooved column and the central axis of the hinge shaft are on the same straight line, one side of the second dust-proof sealing gasket is tightly attached to one end of the hinge shaft, the material of the second dust-proof sealing gasket is polytetrafluoroethylene, and the chuck is embedded and installed in the limit card slot.
[0012] As a further optimization of the present invention, wherein: a plurality of extrusion resistance strips are provided, and the plurality of extrusion resistance strips are evenly and equidistantly distributed on the outer side of the grooved column, the inner side of the semi-circular groove is in close contact with the outer side of the torsion spring, a part of the torsion spring is arranged inside the hinge shaft, and one end of the torsion spring is fixedly connected to the hinge shaft.
[0013] As a further optimization of the present invention, wherein: S1: Assembly between the main shaft assembly, the left hinge and the right hinge assembly: Use a flashlight or magnifying glass to assist in observing whether there are impurities inside the main shaft assembly. If there are impurities, use tools such as air blowing to clean the impurities inside the main shaft assembly. Place the main shaft assembly on a horizontal tabletop so that the fixed hinge fixedly connected to the main shaft assembly forms a vertical angle with the horizontal tabletop. Connect the left hinge and the right hinge assembly to both ends of the threaded shaft core rod arranged inside the elliptical balance shaft rod respectively, and then install the decorative fixed cover and the dust-proof decorative cover into the movable groove and the cover groove through matching bolts or other connecting parts respectively, and the overall installation of the device can be completed; S2: Flipping test of the left hinge and the right hinge assembly: Since the overall structures of the left hinge and the right hinge assembly are roughly the same, any one of them can be selected for the flipping test. First, fix the fixed hinge so that the fixed hinge and the main shaft assembly fixedly connected to the fixed hinge are restricted from rotating. Then rotate the movable hinge to drive the hinge shaft fixedly connected to rotate. When the hinge shaft rotates, it will drive the shell of the damper and the connecting shaft core to rotate. When the connecting shaft core rotates, it will drive the left hinge to rotate through the connected threaded shaft core rod, so that the left hinge and the left hinge flip by a certain angle at the same time; S3: The torsion adjustment component generates opening and closing resistance when the hinge shaft rotates: When the angle between the movable hinge and the fixed hinge is small, when the hinge shaft rotates, the torsion spring resumes deformation and provides a torsion force in the same rotation direction as the hinge shaft that is fixedly connected. Also, the rotation of the housing of the damper drives the shaft body of the damper to rotate, and drives the grooved column to rotate through the damper shaft body. As the grooved column rotates, the frictional force between the extrusion resistance strip fixedly connected to the outside of the grooved column and the decorative fixed cover gradually decreases. When the angle between the hinge shaft and the fixed hinge is less than 90°, the total torsion force provided by the torsion spring resuming deformation to the hinge shaft is the same as the sum of the frictional force between the extrusion resistance strip and the decorative fixed cover. When the hinge shaft rotates a certain angle, at this time, due to the restriction of the extrusion resistance strip on the grooved column, the grooved column cannot rotate in the elliptical balance shaft rod and the movable groove, and the hinge shaft continues to drive the fixedly connected torsion spring to be distorted. At this time, the torsion spring provides a torsion force in the opposite rotation direction to the hinge shaft and gradually increases as the hinge shaft rotates. When the angle at which the movable hinge is closed to the fixed hinge is less than 90°, the hinge shaft needs to provide a rotational force to drive the deformation of the torsion spring and overcome the gradually increasing frictional force between the extrusion resistance strip and the decorative fixed cover; S4: The change in the support center of gravity of the spindle component for the core component: When the threaded core rod rotates, it will drive the fixedly connected flipping magnet to rotate. Since the flipping magnet provides a magnetic repulsive force to the balance magnet, the balance magnet rotates and slides upward along the inner wall of the elliptical balance shaft rod. When the holes axially opened in the balance magnet and the holes opened on the inner side of the flipping magnet are opposite, at this time, a support is formed between the flipping magnet and the elliptical balance shaft rod, and the magnetic repulsive force between the flipping magnet and the balance magnet reaches the maximum, and the overall center of gravity of the device changes and stabilizes.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, through the provided spindle component, right hinge component and core component, the device can dynamically adjust the overall center of gravity when the keyboard is opened and closed, and form a self-stabilizing structure through the dual effects of magnetic repulsion and mechanical limit to effectively offset the center of gravity shift caused by the inclination change, optimize the angle adjustment performance of the keyboard, and thus avoid the shaking of the keyboard due to unstable center of gravity.
[0015] 2. In the present invention, through the provided damper and torsion adjustment component, different degrees of rotational resistance can be provided according to the opening and closing angle of the keyboard to form a progressive resistance curve, which not only ensures that the keyboard can be easily flipped open when the opening and closing angle is small, but also can form a stepped resistance mutation after exceeding a certain opening and closing angle to prevent the user from flipping the angle too large at one time, providing a delicate feedback to the user's opening and closing feel and achieving the flipping effect of light and heavy opening and closing. Description of the Drawings
[0016] Figure 1Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the overall structure of another perspective of the present invention; Figure 3 Schematic diagram of the installation position structure of the shaft core assembly of the present invention; Figure 4 Cross-sectional view of the main shaft assembly of the present invention; Figure 5 Schematic diagram of the right hinge assembly of the present invention; Figure 6 Exploded structure diagram of the right hinge assembly of the present invention; Figure 7 Schematic diagram of the torsion adjustment assembly of the present invention; Figure 8 Cross-sectional view of the torsion adjustment assembly of the present invention; Figure 9 Schematic diagram of the shaft core assembly of the present invention.
[0017] In the figure: 1, fixed hinge; 2, main shaft assembly; 21, elliptical balance shaft rod; 22, shaft rod groove; 23, movable groove; 24, limit card slot; 25, cover groove; 26, limit strip; 27, balance magnet; 3, decorative fixed cover; 4, dust-proof decorative cover; 5, left hinge; 6, right hinge assembly; 61, movable hinge; 62, wire groove; 63, positioning hole; 64, hinge shaft; 65, connecting shaft core; 66, first dust-proof sealing gasket; 67, built-in thread groove; 68, damper; 69, torsion adjustment assembly; 691, grooved column; 692, extrusion resistance strip; 693, semi-circular groove; 694, second dust-proof sealing gasket; 695, torsion spring; 696, chuck; 7, shaft core assembly; 71, threaded shaft core rod; 72, flipping magnet. Detailed implementation manners
[0018] Please refer to Figures 1-9 , the present invention provides a technical solution: An elliptical balanced suspension keyboard rotating shaft and its usage method, including a fixed hinge 1, two decorative fixed covers 3, and two dust-proof decorative covers 4. The two decorative fixed covers 3 are symmetrically installed on one side of the main shaft assembly 2. A left hinge 5 is installed inside the main shaft assembly 2, a right hinge assembly 6 is installed inside the main shaft assembly 2, and a shaft core assembly 7 is arranged inside the main shaft assembly 2. The main shaft assembly 2 includes an elliptical balanced shaft rod 21. An axial rod groove 22 is opened inside the elliptical balanced shaft rod 21, a movable groove 23 is opened inside the elliptical balanced shaft rod 21, a limit card slot 24 is opened inside the elliptical balanced shaft rod 21, a cover groove 25 is opened inside the elliptical balanced shaft rod 21, a limit strip 26 is fixedly connected inside the elliptical balanced shaft rod 21, a balance magnet 27 is arranged inside the elliptical balanced shaft rod 21. The shaft core assembly 7 includes a threaded shaft core rod 71, and a flipping magnet 72 is adhesively fixed to the outside of the threaded shaft core rod 71. The side of the main shaft assembly 2 without the decorative fixed cover 3 is fixedly connected to the fixed hinge 1. The two dust-proof decorative covers 4 are respectively connected to the left hinge 5 and the right hinge assembly 6 through bolts.
[0019] As a further technical solution of this scheme, the opening length of the axial rod groove 22 is equal to the transverse length of the elliptical balanced shaft rod 21. The position of the movable groove 23 corresponds one by one to the position of the decorative fixed cover 3. The limit card slot 24 communicates with the movable groove 23. The position of the cover groove 25 corresponds one by one to the position of the dust-proof decorative cover 4. A number of limit strips 26 are provided. The multiple limit strips 26 are evenly and equidistantly distributed inside the axial rod groove 22. A balance magnet 27 is arranged between every two limit strips 26. The outside of the balance magnet 27 is arc-shaped and closely adheres to the inside of the axial rod groove 22. An arc-shaped groove is arranged on one side of the balance magnet 27. A cylindrical hole is axially opened in the balance magnet 27. The setting of the elliptical balanced shaft rod 21 can improve the overall stability of the device. The opening of the axial rod groove 22 provides necessary space for other components to ensure the smooth movement of the components. The settings of the cover groove 25 and the movable groove 23 facilitate the installation of movable parts and provide movement space. The limit strip 26 plays a role in limiting and guiding the movement of the balance magnet 27; As a further technical solution for the implementation of this solution, the right hinge assembly 6 includes a movable hinge 61. A wire groove 62 is provided on one side of the movable hinge 61. A positioning hole 63 is provided inside the movable hinge 61. A hinge shaft 64 is fixedly connected to one side of the movable hinge 61. A connecting shaft core 65 is installed inside the hinge shaft 64. A first dust-proof sealing gasket 66 is fixedly connected to the outside of the connecting shaft core 65. An internal threaded groove 67 is provided at one end of the connecting shaft core 65. A damper 68 is fixedly installed inside the hinge shaft 64. One end of the damper 68 is fixedly connected to a torque adjustment assembly 69. The depth of the wire groove 62 is half of the thickness of the movable hinge 61. The shape of the positioning hole 63 is cylindrical. The hinge shaft 64, the connecting shaft core 65 and the first dust-proof sealing gasket 66 are on the same axis. A part of the torque adjustment assembly 69 is arranged inside the hinge shaft 64. The depth of the wire groove 62 is designed to be half of the thickness of the movable hinge 61. In this way, it can not only ensure enough space to accommodate the cable, but also maintain the strength of the hinge. The positioning hole 63 can ensure that the right hinge assembly 6 can be accurately installed on the keyboard. The first dust-proof sealing gasket 66 can prevent dust and dirt from entering the device. The damper 68 is used to adjust the rotation speed and force of the movable hinge 61, providing a more stable and comfortable keyboard usage experience; As a further technical solution for the implementation of this solution, threads matching the inner wall of the internal threaded groove 67 are provided on the outer sides of both ends of the threaded shaft core rod 71. The thickness of the flipping magnet 72 gradually increases from both ends to the middle. The outer surface material of the flipping magnet 72 is high-strength alloy steel. The flipping magnet 72 and the balance magnet 27 repel each other magnetically. The interaction between the flipping magnet 72 and the balance magnet 27 optimizes the dynamic change of the overall center of gravity of the device, and also makes the keyboard more stable in the floating state, reducing the shaking and instability during key pressing.
[0020] As a further technical solution for the implementation of this solution, the torque adjustment assembly 69 includes a grooved column 691. An extrusion resistance strip 692 is fixedly connected to the outside of the grooved column 691. A semi-circular groove 693 is provided inside the grooved column 691. A second dust-proof sealing gasket 694 is fixedly connected to the outside of the grooved column 691. A torsion spring 695 is installed inside the grooved column 691. One end of the torsion spring 695 is fixedly connected to a chuck 696. A number of extrusion resistance strips 692 are provided. The plurality of extrusion resistance strips 692 are evenly and equidistantly distributed on the outside of the grooved column 691. The inside of the semi-circular groove 693 is in close contact with the outside of the torsion spring 695. A part of the torsion spring 695 is arranged inside the hinge shaft 64. One end of the torsion spring 695 is fixedly connected to the hinge shaft 64. Such a setting enables the torsion spring 695 to provide rotational resistance through its elastic deformation to achieve torque adjustment, and at the same time enables the extrusion resistance strip 692 to form a cooperation with other components to achieve further precise adjustment of the rotational resistance; As a further technical solution for the implementation of this solution, the grooved column 691 is cylindrical in shape, and the central axis of the grooved column 691 is on the same straight line as the central axis of the hinge shaft 64. One side of the second dust-proof sealing gasket 694 is tightly attached to one end of the hinge shaft 64. The second dust-proof sealing gasket 694 is made of polytetrafluoroethylene. The chuck 696 is embedded and installed in the limit card slot 24. The second dust-proof sealing gasket 694 is made of polytetrafluoroethylene, which not only improves the dust-proof and waterproof performance, but also reduces the friction and maintenance costs; Workflow: S1: Assembly between the main shaft assembly 2, the left hinge 5 and the right hinge assembly 6: Use a flashlight or magnifying glass to assist in observing whether there are impurities inside the main shaft assembly 2. If there are impurities, use tools such as air blowing to clean the impurities inside the main shaft assembly 2. Place the main shaft assembly 2 on a horizontal tabletop so that the fixed hinge 1 fixedly connected to the main shaft assembly 2 forms a vertical angle with the horizontal tabletop. Connect the left hinge 5 and the right hinge assembly 6 to both ends of the threaded core rod 71 provided inside the elliptical balance shaft rod 21 respectively, and then install the decorative fixed cover 3 and the dust-proof decorative cover 4 into the movable slot 23 and the cover slot 25 through suitable bolts or other connecting parts to complete the overall installation of the device; S2: Flip test of the left hinge 5 and the right hinge assembly 6: Since the overall structures of the left hinge 5 and the right hinge assembly 6 are roughly the same, either one of them can be selected for the flip test. First, by fixing the fixed hinge 1, the fixed hinge 1 and the main shaft assembly 2 fixedly connected to the fixed hinge 1 are restricted from rotating. Then rotate the movable hinge 61 to drive the fixedly connected hinge shaft 64 to rotate. When the hinge shaft 64 rotates, it will drive the housing of the damper 68 and the connecting core 65 to rotate. When the connecting core 65 rotates, it will drive the left hinge 5 to rotate through the connected threaded core rod 71, so that the left hinge 5 and the left hinge 5 flip a certain angle at the same time; S3: The torque adjustment component 69 generates opening and closing resistance when the hinge shaft 64 rotates: When the angle between the movable hinge 61 and the fixed hinge 1 is small, when the hinge shaft 64 rotates at this time, the torsion spring 695 resumes deformation and provides a torsion force in the same rotation direction as the hinge shaft 64 to which it is fixedly connected. Moreover, the rotation of the housing of the damper 68 also drives the rotation of the shaft body of the damper 68, and drives the grooved column 691 to rotate through the shaft body of the damper 68. As the grooved column 691 rotates, the friction force between the extrusion resistance strip 692 fixedly connected to the outside of the grooved column 691 and the decorative fixed cover 3 gradually decreases. When the angle between the hinge shaft 64 and the fixed hinge 1 is less than 90°, the sum of the torsion force provided by the torsion spring 695 resuming deformation to the hinge shaft 64 and the friction force between the extrusion resistance strip 692 and the decorative fixed cover 3 is the same. And when the hinge shaft 64 rotates a certain angle, at this time, due to the restriction of the extrusion resistance strip 692 on the grooved column 691, the grooved column 691 cannot rotate in the elliptical balance shaft rod 21 and the movable groove 23. The hinge shaft 64 continues to drive the fixedly connected torsion spring 695 to be distorted. At this time, the torsion spring 695 provides a torsion force in the opposite rotation direction to the hinge shaft 64 and gradually increases as the hinge shaft 64 rotates. When the angle at which the movable hinge 61 merges with the fixed hinge 1 is less than 90°, the hinge shaft 64 needs to provide a rotational force to drive the deformation of the torsion spring 695, and overcome the gradually increasing friction force between the extrusion resistance strip 692 and the decorative fixed cover 3; S4: The change in the supported center of gravity of the shaft core component 7 by the main shaft component 2: When the threaded shaft core rod 71 rotates, it will drive the fixedly connected flipping magnet 72 to rotate. Since the flipping magnet 72 provides a magnetic repulsive force to the balance magnet 27, the balance magnet 27 rotates and slides upward along the inner wall of the elliptical balance shaft rod 21. When the holes axially opened in the balance magnet 27 and the holes opened on the inner side of the flipping magnet 72 are opposite, at this time, a support is formed between the flipping magnet 72 and the elliptical balance shaft rod 21, and the magnetic repulsive force between the flipping magnet 72 and the balance magnet 27 reaches the maximum, and the overall center of gravity of the device changes and stabilizes.
[0021] In this article, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation mode of the present invention. It should be noted that due to the limited nature of written expression and objectively there are infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, retouches or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of the present invention.
Claims
1. An elliptical balanced suspended keyboard hinge, comprising a fixed hinge (1), two decorative fixed covers (3) and two dustproof decorative covers (4), characterized in that: The two decorative fixing covers (3) are symmetrically installed on one side of the main shaft assembly (2); a left hinge (5) is installed on the inner side of the main shaft assembly (2); a right hinge assembly (6) is installed on the inner side of the main shaft assembly (2); and a shaft core assembly (7) is arranged on the inner side of the main shaft assembly (2); The main shaft assembly (2) comprises an elliptical balancing shaft rod (21), a shaft rod groove (22) is provided on the inner side of the elliptical balancing shaft rod (21), a movable groove (23) is provided on the inner side of the elliptical balancing shaft rod (21), a limit slot (24) is provided on the inner side of the elliptical balancing shaft rod (21), a cover slot (25) is provided on the inner side of the elliptical balancing shaft rod (21), a limit strip (26) is fixedly connected to the inner side of the elliptical balancing shaft rod (21), and a balancing magnetic block (27) is provided on the inner side of the elliptical balancing shaft rod (21); The shaft core assembly (7) comprises a threaded shaft core rod (71), and a flip magnetic block (72) is bonded and fixed to the outer side of the threaded shaft core rod (71); A fixed hinge (1) is fixedly connected to the side of the main shaft assembly (2) not equipped with the decorative fixed cover (3), and the two dustproof decorative covers (4) are connected to the left hinge (5) and the right hinge assembly (6) respectively by bolts.
2. The elliptical balanced suspended keyboard shaft according to claim 1, characterized in that: The length of the shaft rod groove (22) is equal to the transverse length of the elliptical balancing shaft rod (21), the position of the movable groove (23) corresponds one-to-one to the position of the decorative fixed cover (3), the limit slot (24) and the movable slot (23) are communicated with each other, and the position of the cover groove (25) corresponds one-to-one to the position of the dustproof decorative cover (4).
3. The elliptical balanced suspended keyboard shaft according to claim 1, characterized in that: A plurality of the limit bars (26) are provided, and the plurality of limit bars (26) are evenly and equidistantly distributed inside the shaft groove (22). A balancing magnetic block (27) is provided between every two limit bars (26). The outer side of the balancing magnetic block (27) is arc-shaped and tightly attached to the inner side of the shaft groove (22). An arc-shaped groove is provided on one side of the balancing magnetic block (27). The balancing magnetic block (27) is provided with a cylindrical hole along the axial direction.
4. The elliptical balanced suspended keyboard shaft according to claim 1, characterized in that: The right hinge assembly (6) comprises a movable hinge (61), a wire groove (62) is provided on one side of the movable hinge (61), a positioning hole (63) is provided on the inner side of the movable hinge (61), a hinge shaft (64) is fixedly connected to one side of the movable hinge (61), a connecting shaft core (65) is installed on the inner side of the hinge shaft (64), a first dustproof sealing gasket (66) is fixedly connected to the outer side of the connecting shaft core (65), a built-in thread groove (67) is provided on one end of the connecting shaft core (65), a damper (68) is fixedly installed on the inner side of the hinge shaft (64), and a torque adjustment assembly (69) is fixedly connected to one end of the damper (68).
5. The elliptical balanced suspended keyboard shaft according to claim 4, characterized in that: The depth of the wire groove (62) is half the thickness of the movable hinge (61), the positioning hole (63) is cylindrical in shape, the hinge shaft (64), the connecting shaft core (65) and the first dustproof sealing gasket (66) are on the same axis, and a portion of the torque adjustment component (69) is disposed inside the hinge shaft (64).
6. The elliptical balanced suspended keyboard shaft according to claim 1, characterized in that: The outer sides of both ends of the threaded shaft core rod (71) are provided with threads matching the inner wall of the built-in thread groove (67); the thickness of the flip magnet (72) gradually increases from the two ends to the middle; the outer surface of the flip magnet (72) is made of high-strength alloy steel; and the flip magnet (72) and the balance magnet (27) are magnetically repelled from each other.
7. The elliptical balanced suspended keyboard shaft according to claim 4, characterized in that: The torque adjustment assembly (69) comprises a grooved column (691), an extrusion resistance strip (692) is fixedly connected to the outer side of the grooved column (691), a semi-annular groove (693) is provided on the inner side of the grooved column (691), a second dustproof sealing gasket (694) is fixedly connected to the outer side of the grooved column (691), a torsion spring (695) is installed on the inner side of the grooved column (691), and a chuck (696) is fixedly connected to one end of the torsion spring (695).
8. The elliptical balanced suspended keyboard shaft according to claim 7, characterized in that: The grooved column (691) is cylindrical in shape, the central axis of the grooved column (691) and the central axis of the hinge shaft (64) are on the same straight line, one side of the second dustproof sealing gasket (694) is tightly attached to one end of the hinge shaft (64), the second dustproof sealing gasket (694) is made of polytetrafluoroethylene, and the chuck (696) is embedded and installed in the limit slot (24).
9. The elliptical balanced suspended keyboard shaft according to claim 7, characterized in that: A plurality of the extrusion resistance bars (692) are provided, and the plurality of the extrusion resistance bars (692) are evenly and equidistantly distributed on the outside of the grooved column (691); the inner side of the semi-annular groove (693) is in close contact with the outer side of the torsion spring (695); a portion of the torsion spring (695) is provided inside the hinge shaft (64); and one end of the torsion spring (695) is fixedly connected to the hinge shaft (64).
10. An elliptical balanced suspended keyboard shaft and a method of using the same according to any one of claims 1 to 9, characterized in that: S1: Assembling the main shaft assembly (2), the left hinge (5) and the right hinge assembly (6): using a flashlight or a magnifying glass to assist in observing whether there are impurities inside the main shaft assembly (2); if there are impurities, using a tool such as an air blower to clean the impurities inside the main shaft assembly (2); placing the main shaft assembly (2) on a horizontal surface, so that the fixed hinge (1) fixedly connected to the main shaft assembly (2) forms a vertical angle with the horizontal surface; connecting the left hinge (5) and the right hinge assembly (6) to the two ends of a threaded shaft core rod (71) arranged inside the elliptical balanced shaft rod (21), respectively; and then installing the decorative fixed cover (3) and the dustproof decorative cover (4) in the movable groove (23) and the cover groove (25) by means of matching bolts or other connectors, thereby completing the overall installation of the device; S2: Flip test of the left hinge (5) and the right hinge assembly (6): Since the overall structure of the left hinge (5) and the right hinge assembly (6) is substantially the same, either of them can be selected for flip test. First, the fixed hinge (1) is fixed so that the fixed hinge (1) and the main shaft assembly (2) fixedly connected to the fixed hinge (1) are restricted from rotating. Then, the movable hinge (61) is rotated so that the movable hinge (61) drives the fixedly connected hinge shaft (64) to rotate. When the hinge shaft (64) rotates, the housing of the damper (68) and the connecting shaft core (65) are driven to rotate. When the connecting shaft core (65) rotates, the left hinge (5) is driven to rotate through the connected threaded shaft core rod (71), so that the left hinge (5) and the right hinge (5) are flipped at a certain angle at the same time. S3: The torque adjustment component (69) generates an opening and closing resistance when the hinge shaft (64) rotates: when the angle between the movable hinge (61) and the fixed hinge (1) is small, when the hinge shaft (64) rotates, the torsion spring (695) recovers its deformation and provides a torque in the same direction of rotation to the fixed hinge shaft (64), and the rotation of the housing of the damper (68) also drives the shaft of the damper (68) to rotate, and drives the grooved column (691) to rotate through the shaft of the damper (68). As the grooved column (691) rotates, the friction between the extrusion resistance strip (692) fixedly connected to the outer side of the grooved column (691) and the decorative fixed cover (3) gradually decreases. When the angle between the hinge shaft (64) and the fixed hinge (1) is less than 90°, the torsion spring (695) recovers its deformation to provide the torsion and extrusion resistance to the hinge shaft (64). The sum of the frictional forces between the force strip (692) and the decorative fixed cover (3) is the same. When the hinge shaft (64) rotates a certain angle, the grooved column (691) cannot rotate in the elliptical balance shaft (21) and the movable groove (23) due to the restriction of the extrusion resistance strip (692). The hinge shaft (64) continues to drive the fixedly connected torsion spring (695) to twist and deform. At this time, the torsion spring (695) provides a torsion force in the opposite direction of rotation to the hinge shaft (64), and the torsion force gradually increases with the rotation of the hinge shaft (64). When the angle of the movable hinge (61) merging with the fixed hinge (1) is less than 90°, the hinge shaft (64) needs to provide a rotational force to drive the torsion spring (695) to deform, and overcome the frictional force between the extrusion resistance strip (692) and the decorative fixed cover (3) that increases step by step. S4: Change of the center of gravity of the spindle assembly (2) supporting the shaft core assembly (7): When the threaded shaft core rod (71) rotates, the fixedly connected flip magnet (72) will be driven to rotate. Since the flip magnet (72) provides a magnetic repulsive force to the balancing magnet (27), the balancing magnet (27) rotates and slides upward along the inner wall of the elliptical balancing shaft rod (21). When the hole axially opened in the balancing magnet (27) and the hole opened on the inner side of the flip magnet (72) are opposite to each other, a support is formed between the flip magnet (72) and the elliptical balancing shaft rod (21), and the magnetic repulsive force between the flip magnet (72) and the balancing magnet (27) reaches the maximum, and the overall center of gravity of the device changes and stabilizes.