A new type of double-shaft structure

Abstract

The utility model relates to notebook pivot technical field, specifically disclose a novel type double -shaft structure, including the casing, the casing inside rotation is connected with first axle body and second axle body, first axle body and second axle body are connected through gear transmission part transmission, the gear gear transmission part includes the main gear of installing in first axle body and second axle body, still includes the two from the gear of rotation connection on the casing, and every main gear is engaged with corresponding from the gear respectively, and every from the gear with the casing between all be provided with clearance adjusting portion. Set up gear transmission part and realize the synchronous reverse rotation between first axle body and second axle body, ensure the synchronism and stability of pivot movement, pass through the design of clearance adjusting portion simultaneously, effectively adjust the clearance between from the gear and the casing, avoid the wear and tear aggravation or the shaking problem caused by engaging too loose of gear because of engaging, thereby promote the service life and the running stability of pivot.

Description

Technical Field

[0001] This utility model relates to the field of notebook hinge technology, specifically a novel dual-axis structure. Background Technology

[0002] A laptop computer mainly consists of a display unit (the laptop screen) and a system unit (the laptop body) that can be opened or closed relative to each other. The display unit and the system unit are respectively connected to the opposing brackets pre-set on the hinge structure, so that the display unit and the system unit can open and close around the hinge structure as the axis of motion. The commonly used dual-axis simultaneous hinge structure is mainly to allow the other axis to rotate synchronously when one axis rotates.

[0003] Because such electronic devices require one end to be opened to a set angle for easy operation, the dual-axis synchronous rotating shaft structure usually needs to be equipped with a related torque mechanism to achieve the positioning function. At the same time, in order to achieve the function of dual-axis synchronous movement, a synchronous transmission mechanism must be set on the rotating shaft structure.

[0004] In the prior art, such as the Chinese patent with authorization announcement number CN206958080U entitled "A Laptop Hinge", the aforementioned patent discloses a laptop hinge, including a first hinge, a second hinge, an upper bracket, a lower bracket, side gears, a transmission gear, and gear fixing seats. The upper bracket is pressed onto the upper surface of the first hinge by rivets, and the lower bracket is pressed onto the lower surface of the second hinge by rivets. Two side gears are respectively sleeved on the first and second hinges, and two gear fixing seats are respectively sleeved on the first and second hinges and located at both ends of the two side gears. The transmission gear is located in the receiving space formed by the two helical gears and the two gear fixing seats, and is perpendicular to the two side gears and meshes with them.

[0005] The aforementioned patent utilizes gear meshing to achieve synchronous counter-rotation of two shafts, resulting in a simple structure that allows for thinner and lighter laptops. Existing technologies, including the aforementioned patent, to some extent meet the operational requirements of the hinge. It is known that two gears need to mesh during actual use. However, if the meshing is too loose, the entire hinge will wobble during use, resulting in poor stability; conversely, if the meshing is too tight, the greater meshing force between the two gears leads to greater wear, affecting the overall lifespan of the hinge. Utility Model Content

[0006] The purpose of this invention is to provide a novel dual-axis structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a novel dual-shaft structure, comprising a housing, wherein a first shaft and a second shaft are rotatably connected inside the housing, and the first shaft and the second shaft are connected by a gear transmission unit; the gear transmission unit includes a master gear mounted on the first shaft and the second shaft, and two driven gears rotatably connected to the housing, the two driven gears meshing, and each master gear meshing with a corresponding driven gear; and each driven gear is provided with a clearance adjustment part between it and the housing.

[0008] Furthermore, a mounting plate is installed inside the housing via a positioning frame, and the first shaft and the second shaft are rotatably connected to the mounting plate respectively; the clearance adjustment part is disposed between the driven gear and the mounting plate.

[0009] Furthermore, the gap adjustment part includes an adjustment rod mounted on the driven gear, and a gap groove is provided on the mounting plate, with the adjustment rod movably connected in the gap groove.

[0010] Furthermore, the diameter of the gap groove is larger than the diameter of the adjusting rod.

[0011] Furthermore, there are two mounting plates, which are respectively installed on both sides of the housing, and both driven gears rotate between the two mounting plates.

[0012] Furthermore, a fastening post is installed inside the housing by screws, and the fastening post is connected to one of the mounting plates.

[0013] Furthermore, hinges are respectively installed on the first shaft and the second shaft via fastening rods.

[0014] Furthermore, both the first shaft and the second shaft are provided with elastic units at the ends away from the hinge; the elastic units include torsion springs and noise-absorbing springs.

[0015] Furthermore, adjustment units are provided on the side of both the first and second shafts away from the elastic unit.

[0016] Furthermore, the main gear is provided with a mounting groove, and the first shaft and the second shaft are respectively engaged with the mounting groove via connecting rods.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This novel dual-shaft structure, through the cooperation between the housing, the first shaft, the second shaft, the gear transmission part, and the clearance adjustment part, enables the synchronous and reverse rotation between the first shaft and the second shaft during use, ensuring the synchronicity and stability of the shaft movement. At the same time, the clearance adjustment part effectively adjusts the clearance between the gear and the housing, avoiding the problem of increased wear caused by excessive meshing of the gear or the shaking problem caused by excessive meshing of the gear, thereby improving the service life and smooth operation of the shaft. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the shell separation state provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the mounting structure of the gear and the clearance adjustment part provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the installation method of the adjustment part provided in an embodiment of the present utility model; Figure 5 This is a schematic diagram of the opening position structure of the gap groove provided in an embodiment of the present utility model; Figure 6 This is a schematic diagram of a partial explosion state structure provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the connection between the gear transmission part and the mounting plate provided in an embodiment of the present utility model; Figure 8 A schematic diagram of the meshing state of the main gear and the driven gear provided in an embodiment of this utility model; Figure 9 This is a schematic diagram of the installation slot opening position structure provided in the embodiment of this utility model; Figure 10 A schematic diagram of the shell structure provided for an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Housing; 2. First shaft; 3. Second shaft; 4. Main gear; 41. Mounting groove; 5. Driven gear; 6. Mounting plate; 7. Clearance adjustment part; 71. Adjusting rod; 72. Clearance groove; 8. Hinge; 9. Fastening rod; 10. Connecting rod; 11. Positioning frame; 12. Fastening column; 13. Torque spring; 14. Noise-absorbing spring; 15. Adjustment unit. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-10 This utility model provides a technical solution: a novel dual-shaft structure, including a housing 1, with a first shaft 2 and a second shaft 3 rotatably connected inside the housing 1, and the first shaft 2 and the second shaft 3 being connected by a gear transmission unit; the gear transmission unit includes a main gear 4 mounted on the first shaft 2 and the second shaft 3, and two driven gears 5 rotatably connected to the housing 1, the two driven gears 5 meshing, and each main gear 4 meshing with a corresponding driven gear 5; and each driven gear 5 is provided with a clearance adjustment part 7 between it and the housing 1.

[0023] Specifically, this novel dual-shaft structure includes a housing 1, inside which a first shaft 2 and a second shaft 3 are rotatably connected. The first shaft 2 and the second shaft 3 are connected by a gear transmission unit, meaning that when the first shaft 2 rotates, it drives the second shaft 3 to rotate via the gear transmission unit, and vice versa. The gear transmission unit includes a master gear 4 mounted on the first shaft 2 and the second shaft 3, and two driven gears 5 rotatably connected to the housing 1. The two driven gears 5 mesh, and each master gear 4 meshes with its corresponding driven gear 5. That is, when the first shaft 2 rotates, the master gear 4 on the first shaft 2 rotates, and then, through the transmission of the two driven gears 5, it drives the master gear 4 on the second shaft 3 to rotate, thereby driving the second shaft 3 to rotate. Furthermore, each driven gear 5 is provided with a clearance adjustment part 7 between itself and the housing 1, avoiding wear or shaking problems caused by excessively tight or loose meshing, thus improving the service life and stability of the shaft.

[0024] In the embodiments provided by this utility model, an mounting plate 6 is installed inside the housing 1 by a positioning frame 11. The first shaft 2 and the second shaft 3 are rotatably connected to the mounting plate 6, which enhances the connection stability between the shaft and the housing 1, and facilitates the installation and adjustment of the gap adjustment part 7, thereby improving the overall rigidity and assembly accuracy of the structure.

[0025] In the embodiments provided by this utility model, the clearance adjustment part 7 includes an adjustment rod 71 mounted on the driven gear 5. A clearance groove 72 is provided on the mounting plate 6, and the adjustment rod 71 is movably connected within the clearance groove 72. This allows for fine-tuning of the position of the driven gear 5, facilitating flexible control of the gear clearance during actual assembly and improving assembly efficiency and transmission accuracy. Furthermore, the diameter of the clearance groove 72 is larger than the diameter of the adjustment rod 71. This design, where the diameter of the clearance groove 72 is larger than the diameter of the adjustment rod 71, provides sufficient space for the adjustment process, preventing jamming problems caused by machining errors or thermal expansion and contraction, and enhancing the adaptability and reliability of the structure.

[0026] In the embodiment provided by this utility model, there are two mounting plates 6, which are respectively installed on both sides of the housing 1, and both driven gears 5 rotate between the two mounting plates 6. The two mounting plates 6 are located on both sides of the housing 1, forming a symmetrical support structure, which effectively disperses the force during the transmission process and improves the overall rigidity and torsional resistance of the shaft.

[0027] In the embodiment provided by this utility model, a fastening post 12 is installed inside the housing 1 by screws, and the fastening post 12 is connected to one of the mounting plates 6. The connection between the fastening post 12 and the housing 1 enhances the fixing strength between the mounting plate 6 and the housing 1, prevents loosening during frequent rotation, and improves the durability of the structure. In the embodiments provided by this utility model, hinges 8 are respectively installed on the first shaft 2 and the second shaft 3 via fastening rods 9. This simplifies the installation method of the hinges 8, improves assembly efficiency, and enhances the reliability of the connection between the rotating shaft and external equipment.

[0028] In the embodiments provided by this utility model, the ends of the first shaft 2 and the second shaft 3 away from the hinge 8 are both provided with elastic units; the elastic unit includes a torque spring 13 and a noise-reducing spring 14. By setting the elastic unit composed of the torque spring 13 and the noise-reducing spring 14, a stable opening and closing torque is provided, and the noise during the rotation process is reduced, thereby improving the user experience.

[0029] In the embodiments provided by this utility model, adjustment units 15 are provided on the side of the first shaft 2 and the second shaft 3 away from the elastic unit. Specifically, the adjustment unit 15 is a bolt adjustment component, which can adjust the torque according to the working needs.

[0030] In the embodiment provided by this utility model, the main gear 4 is provided with a mounting groove 41, and the first shaft 2 and the second shaft 3 are respectively engaged with the mounting groove 41 through a connecting rod 10. The mounting groove 41 on the main gear 4 and the engagement with the shaft through the connecting rod 10 simplify the connection structure between the gear and the shaft, facilitate disassembly and replacement, and improve maintenance convenience.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel dual-axis structure, comprising a housing (1), wherein a first shaft (2) and a second shaft (3) are rotatably connected inside the housing (1), characterized in that: The first shaft (2) and the second shaft (3) are connected by a gear transmission unit; The gear transmission unit includes a main gear (4) mounted on a first shaft (2) and a second shaft (3), and also includes two driven gears (5) rotatably connected to the housing (1). The two driven gears (5) mesh, and each main gear (4) meshes with the corresponding driven gear (5). Furthermore, a clearance adjustment part (7) is provided between each gear (5) and the housing (1).

2. The novel biaxial structure according to claim 1, characterized in that: An mounting plate (6) is installed inside the housing (1) via a positioning frame (11), and the first shaft (2) and the second shaft (3) are rotatably connected to the mounting plate (6); The gap adjustment part (7) is disposed between the driven gear (5) and the mounting plate (6).

3. The novel biaxial structure according to claim 2, characterized in that: The gap adjustment part (7) includes an adjustment rod (71) mounted on the driven gear (5), and a gap groove (72) is provided on the mounting plate (6), and the adjustment rod (71) is movably connected in the gap groove (72).

4. The novel biaxial structure according to claim 3, characterized in that: The diameter of the gap groove (72) is larger than the diameter of the adjusting rod (71).

5. A novel biaxial structure according to claim 2, characterized in that: There are two mounting plates (6), which are respectively installed on both sides of the housing (1), and the two driven gears (5) rotate between the two mounting plates (6).

6. A novel biaxial structure according to claim 2, characterized in that: A fastening post (12) is installed inside the housing (1) by screws, and the fastening post (12) is connected to one of the mounting plates (6).

7. A novel biaxial structure according to claim 1, characterized in that: Hinges (8) are installed on the first shaft (2) and the second shaft (3) respectively via fastening rods (9).

8. A novel biaxial structure according to claim 7, characterized in that: Both the first shaft (2) and the second shaft (3) are provided with elastic units at the ends away from the hinge (8); the elastic units include torsion springs (13) and noise-reducing springs (14).

9. A novel biaxial structure according to claim 8, characterized in that: An adjustment unit (15) is provided on the side of the first shaft (2) and the second shaft (3) away from the elastic unit.

10. A novel biaxial structure according to claim 1, characterized in that: The main gear (4) has an installation groove (41), and the first shaft (2) and the second shaft (3) are respectively connected to the installation groove (41) by a connecting rod (10).

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