Ratchet type variable-torque synchronous double-shaft rotating shaft

Abstract

The utility model discloses a ratchet wheel type variable torque synchronous double-shaft rotating shaft which comprises a rotating shaft body, a fixing plate is installed on the rotating shaft body, an LCD shaft and a BASE shaft are arranged on the fixing plate respectively, the bottom of the LCD shaft and the bottom of the BASE shaft are sleeved with an S buckle, an intermediate gear is installed on one side of the S buckle, a gear A is installed on one side of the intermediate gear, a gear B is installed on the other side of the intermediate gear, and the gear A and the gear B are meshed with each other. A ratchet wheel is arranged on one side of the pawl, and a limiting block is installed at the bottom of the ratchet wheel. And a limiting staddle is mounted on one side of the S-shaped buckle. According to the ratchet wheel type variable-torque synchronous double-shaft rotating shaft, the ratchet wheel and the limiting block generate relative motion, the number of friction surfaces is increased, and the torque is increased; through cooperation between the pawl and the limiting block and the one-way rotation characteristic of the pawl and the ratchet wheel, variable-torque rotation of the rotating shaft body in a specific angle state is achieved; the design of variable torsion enables a user to realize accurate positioning when adjusting the angle of the screen.

Description

A ratchet-type variable torque co-moving dual-axis rotating shaft Technical Field

[0001] This utility model relates to the field of notebook computer accessories, specifically a ratchet-type variable torque dual-axis rotating shaft. Background Technology

[0002] The laptop hinge is a key component connecting the laptop screen and the chassis, typically located on the sides or back of the laptop. It is generally made of metal and includes a core, bearings, and a housing. The core is the central component, running the entire hinge and allowing the screen to rotate around it. The bearings are mounted around the core, reducing friction and supporting the screen to ensure smooth rotation. The housing usually encloses the core and bearings, providing protection and stability, and also connecting to the laptop chassis and screen. The primary function of the hinge is to allow the user to open or close the laptop screen as needed for convenient use and portability. When open, the screen maintains a stable angle, providing a good visual experience. When closed, the screen fits snugly against the chassis, protecting the screen and internal components. The weight of the laptop screen is transferred to the chassis via the hinge, which needs sufficient strength and stability to support the screen and prevent it from wobbling or sagging.

[0003] Laptop hinges, by design, cannot adjust torque, making it difficult for users to find and maintain a suitable screen angle when adjusting the screen. For example, when using the laptop in bright outdoor light, users may need to adjust the screen to a specific angle to reduce glare, but a hinge with fixed torque may not be able to accurately position and stably maintain that angle. The screen is easily displaced by slight external touches or gravity. A hinge that cannot adjust torque struggles to provide ideal screen support and positioning in all scenarios. Summary of the Invention

[0004] The purpose of this invention is to provide a ratchet-type variable torque dual-axis rotating shaft to solve the defects mentioned in the background art.

[0005] To achieve the above objectives, a ratchet-type variable torque dual-axis rotating shaft is provided, comprising a rotating shaft body, a fixing plate mounted on the rotating shaft body, an LCD shaft and a BASE shaft respectively disposed on the fixing plate, an S-ring sleeved at the bottom of the LCD shaft and the BASE shaft, an intermediate gear mounted on one side of the S-ring, a gear A mounted on one side of the intermediate gear, and a gear B mounted on the other side of the intermediate gear, a pawl mounted in the middle of the rotating shaft body, a ratchet mounted on one side of the pawl, and a limit block mounted at the bottom of the ratchet; a limit bracket mounted on one side of the S-ring, the two sets of limit brackets respectively limiting the installation of the LCD shaft and the BASE shaft.

[0006] Preferably, the LCD axis and the BASE axis are arranged in parallel, and gear A and gear B are respectively installed on the shafts of the LCD axis and the BASE axis, and gear A and gear B have the same size.

[0007] Preferably, an intermediate gear is provided in the middle of gear A and gear B, and the two sides of the intermediate gear are respectively meshed with gear A and gear B. Ratchets are installed on the shafts of gear A and gear B, and a mounting seat is provided on one side of the ratchet. The intermediate gear, gear A and gear B are combined to form a gear set.

[0008] Preferably, both sets of ratchet wheels are equipped with pawls, and torsion springs are fixedly mounted on the pawls. At the same time, limit blocks are provided at the bottom of both sets of ratchet wheels, and cam supports are installed below the two sets of ratchet wheels. Cams are provided on both sides of the bottom of the cam supports, and disc-shaped springs are mounted on the cams. A connecting shaft is installed at the end of the disc-shaped springs.

[0009] Preferably, the pawl includes a pawl, a positioning groove, a positioning post, and a fixing bolt. The pawl is fixedly provided with a pawl, and the end of the pawl is engaged in the tooth groove on the ratchet.

[0010] Preferably, the pawl has a positioning groove inside, the positioning groove is adapted to the size of the positioning post, the positioning post is inserted into the positioning groove, and the positioning post is fixedly set on the outer circumferential wall of the pawl; the positioning post is positioned and inserted into the positioning groove and fixed by screwing on the fixing bolt.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: When opened from 0 degrees to 90 degrees, the ratchet is in a free state and can rotate. There is no friction between the ratchet and the limiting block, the number of friction surfaces is small, and the torque is low. When opened from 90 degrees to 360 degrees, the pawl is locked by the limiting block, thereby locking the ratchet. At this time, the ratchet and the limiting block generate relative movement, the number of friction surfaces increases, and the torque increases. When closed from 360 degrees to 0 degrees, the pawl is blocked by the stop point on the limiting bracket, locking the ratchet. At this time, the ratchet and the limiting block generate relative movement, the number of friction surfaces increases, and the torque increases. Through the cooperation between the pawl and the limiting block, and the unidirectional rotation characteristics of the pawl and the ratchet, the variable torque rotation of the shaft body at a specific angle is achieved. The variable torque design allows users to achieve precise positioning when adjusting the screen angle. Attached Figure Description

[0012] Figure 1 is a front view schematic diagram of the structure of this utility model;

[0013] Figure 2 is a schematic diagram of the rotating shaft body opening from 0° to 90°.

[0014] Figure 3 is a schematic diagram of the rotating shaft body opening from 90° to 360°.

[0015] Figure 4 is a schematic diagram of the rotating shaft body from 360° closed to 0°.

[0016] Figure 5 is an isometric view of Figure 1;

[0017] Figure 6 is a schematic diagram of the ratchet structure of this utility model.

[0018] The following are the labels in the diagram: 1. Connecting shaft; 2. Cam; 3. Torsion spring; 4. Fixing plate; 5. Mounting base; 6. Pawl; 60. Clamp; 61. Positioning groove; 62. Positioning pin; 63. Fixing bolt; 7. Intermediate gear; 71. Gear A; 72. Gear B; 8. S-ring; 9. LCD shaft; 10. BASE shaft; 11. Limiting support; 12. Gear set; 13. Ratchet; 131. Limiting block; 14. Cam support; 15. Disc spring; 16. Rotating shaft body. Detailed Implementation

[0019] Please refer to Figures 1-6. This utility model provides a ratchet-type variable torque dual-axis rotating shaft, including a rotating shaft body 16. A fixing plate 4 is installed on the rotating shaft body 16. An LCD shaft 9 and a BASE shaft 10 are respectively arranged on the fixing plate 4. An S-ring 8 is sleeved at the bottom of the LCD shaft 9 and the BASE shaft 10. An intermediate gear 7 is installed on one side of the S-ring 8. A gear A71 is installed on one side of the intermediate gear 7. A gear B72 is installed on the other side of the intermediate gear 7. A pawl 6 is installed in the middle of the rotating shaft body 16. A ratchet 13 is arranged on one side of the ratchet 6. A limit block 131 is installed at the bottom of the ratchet 13. A limit bracket 11 is installed on one side of the S-ring 8. The two sets of limit brackets 11 limit the installation of the LCD shaft 9 and the BASE shaft 10 respectively.

[0020] Working principle: When in use, the LCD axis 9 is connected to the computer screen, and the BASE axis 10 is connected to the computer base. When the computer screen is rotated, the elasticity of the torsion spring 3 causes the E pawl 6 to engage with the C ratchet 13. When opening from 0 degrees to 90 degrees, the ratchet 13 is in a free state and can rotate. There is no friction between the ratchet 13 and the limiting block 131, resulting in fewer friction surfaces and lower torque. When opening from 90 degrees to 360 degrees, the pawl 6 is locked by the limiting block 131, thus locking the ratchet 13. At this time, the ratchet 13 and the limiting block 131 generate relative motion, increasing the number of friction surfaces and increasing the torque. When closing from 360 degrees to 0 degrees, the pawl 6 is blocked by the upper stop of the limiting bracket 11, and the pawl 6 locks the ratchet 13. At this time, the ratchet 13 and the limiting block 131 generate relative motion, increasing the number of friction surfaces and increasing the torque. Through the cooperation between the pawl 6 and the limiting block 131, and the unidirectional rotation characteristics of the pawl 6 and the ratchet 13, the variable torque rotation of the shaft body 16 at a specific angle is achieved. The variable torque design allows the user to... The variable torque hinge allows for precise screen angle adjustments. For example, when processing images or editing videos, users can adjust the screen to a specific angle for optimal visual effects and ease of operation, while maintaining a stable position at that angle unaffected by minor external forces. Different usage scenarios have varying screen angle requirements, which the variable torque hinge effectively addresses. When used outdoors in sunlight, users can flexibly adjust the screen angle based on the direction and intensity of the light to find the best viewing angle, with the torque automatically adapting to the adjusted angle to ensure screen stability. During screen opening and closing, the variable torque hinge provides corresponding resistance based on the speed and angle of opening and closing, resulting in smoother and more natural operation. For instance, when quickly opening the screen, the torque automatically increases, providing a certain level of damping to prevent collisions caused by the screen opening rapidly due to inertia; when slowly closing the screen, the torque decreases, allowing users to easily close the screen. The entire process is comfortable and enhances the user's perception of the laptop's quality.

[0021] The pawl 60 on the pawl 6 is positioned and installed via the positioning groove 61, positioning pin 62, and fixing bolt 63. The pawl 60 can be disassembled. When the pawl 60 is worn, deformed, or otherwise damaged, the clear positioning groove 61 and positioning pin 62 allow maintenance personnel to quickly identify the part that needs to be replaced, namely the pawl 60, without confusing or misjudging other parts, thus quickly locating the problem. Compared with the traditional integral structure, there is no need to disassemble the entire ratchet 13 and pawl 6 assembly or perform complex disassembly work. Simply follow the guidance of the positioning groove 61 and positioning pin 62 to remove the pawl 60 from the corresponding position and then install a new pawl 60, which greatly shortens maintenance time and improves maintenance efficiency.

[0022] In a preferred embodiment, the LCD axis 9 and the BASE axis 10 are arranged in parallel, and gears A71 and B72 are respectively mounted on the shafts of the LCD axis 9 and the BASE axis 10. The dimensions of gears A71 and B72 are the same.

[0023] In a preferred embodiment, an intermediate gear 7 is provided in the middle of gears A71 and B72, and the two sides of the intermediate gear 7 are respectively meshed with gears A71 and B72. Ratchets 13 are installed on the shafts of gears A71 and B72, and a mounting seat 5 is provided on one side of the ratchet 13. The intermediate gear 7, gears A71 and B72 are combined to form a gear set 12.

[0024] In a preferred embodiment, pawls 6 are installed on both sets of ratchet wheels 13, and torsion springs 3 are fixedly installed on the pawls 6. Limiting blocks 131 are provided at the bottom of both sets of ratchet wheels 13. A cam support 14 is installed below the two sets of ratchet wheels 13. Cams 2 are provided on both sides of the bottom of the cam support 14. Disc-shaped springs 15 are installed on the cams 2. A connecting shaft 1 is installed at the end of the disc-shaped springs 15.

[0025] In a preferred embodiment, the pawl 6 includes a pawl 60, a positioning groove 61, a positioning post 62, and a fixing bolt 63. The pawl 60 is fixedly provided on the pawl 6, and the end of the pawl 60 is engaged in the tooth groove on the ratchet 13.

[0026] In a preferred embodiment, the pawl 60 has a positioning groove 61 inside, the positioning groove 61 is adapted to the size of the positioning post 62, the positioning post 62 is inserted into the inside of the positioning groove 61, and the positioning post 62 is fixedly set on the outer circumferential wall of the pawl 6; the positioning post 62 is positioned and inserted into the inside of the positioning groove 61 and is fixed by screwing on the fixing bolt 63.

Claims

1. A ratchet-type variable torque co-moving dual-axis rotating shaft, comprising a rotating shaft body (16), characterized in that: A fixing plate (4) is installed on the rotating shaft body (16). An LCD shaft (9) and a BASE shaft (10) are respectively installed on the fixing plate (4). An S-ring (8) is sleeved on the bottom of the LCD shaft (9) and the BASE shaft (10). An intermediate gear (7) is installed on one side of the S-ring (8). A gear A (71) is installed on one side of the intermediate gear (7). A gear B (72) is installed on the other side of the intermediate gear (7). A pawl (6) is installed in the middle of the rotating shaft body (16). A ratchet (13) is provided on one side of the pawl (6). A limit block (131) is installed at the bottom of the ratchet (13). A limit bracket (11) is installed on one side of the S-ring (8). The two sets of limit brackets (11) limit the installation of the LCD shaft (9) and the BASE shaft (10) respectively.

2. The ratchet-type variable torque co-moving dual-axis rotating shaft according to claim 1, characterized in that: The LCD axis (9) and BASE axis (10) are arranged in parallel. Gear A (71) and gear B (72) are respectively installed on the shafts of the LCD axis (9) and BASE axis (10). The dimensions of gear A (71) and gear B (72) are the same.

3. The ratchet-type variable torque co-moving dual-axis rotating shaft according to claim 2, characterized in that: A middle gear (7) is provided in the middle of gear A (71) and gear B (72). The two sides of the middle gear (7) are respectively meshed with gear A (71) and gear B (72). A ratchet (13) is installed on the shaft of gear A (71) and gear B (72). A mounting seat (5) is provided on one side of the ratchet (13). The middle gear (7), gear A (71) and gear B (72) are combined together to form a gear set (12).

4. A ratchet-type variable torque co-moving dual-axis rotating shaft according to claim 3, characterized in that: Both sets of ratchet (13) are equipped with pawls (6), and torsion springs (3) are fixedly installed on the pawls (6). At the same time, limit blocks (131) are provided at the bottom of both sets of ratchet (13). Cam support frame (14) is installed below the two sets of ratchet (13). Cams (2) are provided on both sides of the bottom of the cam support frame (14). Disc springs (15) are installed on the cams (2). A connecting shaft (1) is installed at the end of the disc springs (15).

5. A ratchet-type variable torque co-moving dual-axis rotating shaft according to claim 4, characterized in that: The pawl (6) includes a pawl (60), a positioning groove (61), a positioning pin (62), and a fixing bolt (63). The pawl (6) is fixedly provided with a pawl (60), and the end of the pawl (60) is engaged in the tooth groove on the ratchet (13).

6. A ratchet-type variable torque co-moving dual-axis rotating shaft according to claim 5, characterized in that: The pawl (60) has a positioning groove (61) inside, which is adapted to the size of the positioning post (62). The positioning post (62) is inserted into the positioning groove (61) and fixedly set on the outer circumferential wall of the pawl (6). The positioning post (62) is positioned and inserted into the positioning groove (61) and fixed by screwing with fixing bolts (63).

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