A motorcycle fore-end angle adjustment mechanism

Abstract

This invention relates to the field of motorcycle technology and discloses a motorcycle reach angle adjustment mechanism. The frame has detachable flange seats at both the top and bottom. A bearing ring is embedded inside the flange seat, and an oil seal ring is embedded between the bottom of the bearing ring and the flange seat. The frame bore is coaxial (coaxial with the outer circle of the flange seat). The inner circle of the flange (bearing press-fit surface) and the outer circle of the flange are machined to form an angle. Users can remove the upper and lower flange seats, rotate them 180°, and reassemble them into the frame as needed to adjust the reach angle. During use, the reach angle of the entire motorcycle can be adjusted according to the vehicle's usage requirements. This satisfies both the handling sensitivity required for extreme track riding and the high-speed stability needed for long-distance motorcycle touring, providing different driving experiences and enjoyment with a single motorcycle.

Description

Technical Field

[0001] This invention relates to the field of motorcycle frame technology, specifically to a motorcycle fore-end angle adjustment mechanism. Background Technology

[0002] The lead-out angle is a key parameter in the geometry design of sportbikes, directly affecting the vehicle's handling, stability, and steering characteristics. Currently, due to structural reasons, the lead-out angle of motorcycles is fixed at the factory. A lead-out angle setting that meets the requirements for track riding cannot meet the requirements for high-speed stability during commuting or long-distance riding, and a lead-out angle setting that meets the requirements for high-speed stability during commuting or long-distance riding cannot meet the requirements for extreme handling on the track. It cannot be adjusted according to user needs, nor can it cope with various complex road conditions. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a motorcycle reach angle adjustment mechanism, which has at least the advantages of convenient and quick reach angle adjustment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a motorcycle fore-end angle adjustment mechanism, including a frame, a flange seat that can be detachably installed at the top and bottom of the frame, a bearing ring embedded inside the flange seat, an oil seal ring embedded between the bottom of the bearing ring and the flange seat, a dust cover that can be detachably installed between the top of the bearing ring and the flange seat, a steering column embedded inside the bearing ring, a locking nut threadedly connected to the top of the steering column, and an upper connecting plate and a lower connecting plate fixedly installed at the top and bottom of the steering column, respectively.

[0005] Preferably, the frame has mounting holes corresponding to the flange seat, with the upper and lower mounting holes on the same axis, which is also on the same axis as the outer circle axis of the flange seat; the inner circle axis of the flange seat is on the same axis as the steering column axis.

[0006] Preferably, the inner circle axis of the flange seat forms an angle α with the outer circle axis of the flange seat, where α = 0.5°.

[0007] Preferably, the initial angle between the inner circle axis of the flange seat and the vertical line is 24°.

[0008] In this invention, the flange seat is removed, rotated 180°, and then reinstalled. The angle between the inner circle axis of the flange seat and the vertical line is 25°, i.e., 25° = 24° + 2α.

[0009] Preferably, both ends of the steering column extend to the outside of the vehicle frame.

[0010] Compared with the prior art, the motorcycle fore-end angle adjustment mechanism provided by the present invention has the following advantages:

[0011] The motorcycle's reach angle adjustment mechanism features a frame hole that is coaxial with the outer circle of the flange seat. The inner circle of the flange (bearing press-fit surface) and the outer circle of the flange are machined to form an angle α=0.5°. The initial reach angle is set to 24°. Users can remove the upper and lower flange seats, rotate them 180°, and then reassemble them into the frame to adjust the reach angle to 25° (24°+2α). During use, the reach angle of the entire motorcycle can be adjusted according to the needs of the vehicle. This satisfies both the handling sensitivity during extreme track driving and the high-speed stability during long-distance motorcycle touring. A single motorcycle can bring different driving experiences and driving pleasures. Attached Figure Description

[0012] Figure 1 , Figure 2 This is a three-dimensional structural diagram of the motorcycle reach angle adjustment mechanism in the embodiment;

[0013] Figure 3 This is a schematic diagram of the flange seat and the directional column in the embodiment;

[0014] Figure 4 This is a cross-sectional schematic diagram of the motorcycle reach angle adjustment mechanism in the embodiment;

[0015] Figure 5 for Figure 4 Schematic diagram of the cross-section of the middle AA structure;

[0016] Figure 6 This is a schematic diagram of the flange seat and the directional column in the embodiment;

[0017] Figure 7 for Figure 6 Schematic diagram of the BB structure;

[0018] Figure 8 This is a schematic diagram of the forward extension angle structure of the motorcycle forward extension angle adjustment mechanism in the initial state in the embodiment;

[0019] Figure 9 This is a schematic diagram of the adjusted forward extension angle structure.

[0020] In the diagram: 1. Chassis; 2. Flange seat; 3. Bearing ring; 4. Oil seal ring; 5. Dust cover; 6. Steering column; 7. Locking nut; 8. Upper connecting plate; 9. Lower connecting plate. Detailed Implementation

[0021] The technical solutions 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. Example

[0022] Please see Figure 1-7 A motorcycle fore-end angle adjustment mechanism includes a frame 1. Flange seats 2 are detachably mounted on both the top and bottom of the frame 1. A bearing ring 3 is embedded inside the flange seat 2. An oil seal ring 4 is embedded between the bottom of the bearing ring 3 and the flange seat 2. A dust cover 5 is detachably mounted between the top of the bearing ring 3 and the flange seat 2. A steering column 6 is embedded inside the bearing ring 3, with both ends extending to the outer side of the frame 1. A locking nut 7 is threaded onto the top of the steering column 6. An upper connecting plate 8 and a lower connecting plate 9 are fixedly mounted on the top and bottom of the steering column 6, respectively. Mounting holes corresponding to the flange seats 2 are formed on the frame 1. The upper and lower mounting holes are on the same axis, which is also on the same axis as the outer circle axis of the flange seat 2. The inner circle axis of the flange seat 2 is on the same axis as the axis of the steering column 6. The inner circle axis of flange seat 2 forms an angle α with the outer circle axis of flange seat 2, where α = 0.5°. The initial angle between the inner circle axis of flange seat 2 and the vertical line is 24°. After flange seat 2 is removed, rotated 180°, and then reinstalled, the angle between the inner circle axis of flange seat 2 and the vertical line becomes 25°, i.e., 25° = 24° + 2α.

[0023] In use, the upper and lower holes of frame 1 are coaxial (coaxial with the outer circle of flange seat 2). The inner circle of the flange (bearing press-fit surface) and the outer circle of the flange axis are machined to set an included angle α, α=0.5°, and the initial set forward extension angle is 24°. As needed, the user can remove the upper and lower flange seats 2, rotate them 180° and then reassemble them into frame 1. The forward extension angle can then be adjusted to 25° (24°+2α). The single adjustment time for the forward extension angle is only 40~50 minutes, which is convenient and fast. In this solution, the forward extension angle of the whole vehicle can be adjusted according to the needs of vehicle use. This can satisfy both the handling sensitivity when driving at extreme speeds on the track and the high-speed stability when riding long distances on motorcycles. Only one vehicle is needed to bring different driving experiences and driving pleasure.

[0024] The technical advantages of the motorcycle fore-end angle adjustment mechanism of this invention include:

[0025] By adjusting the reach angle, riders can optimize handling according to personal preferences and road conditions, enhancing steering agility and stability. Different riding conditions (such as track, off-road, and city) require different reach angles, and the adjustable structure allows the motorcycle to adapt to various environments. Riders can adjust the reach angle according to their height, weight, and riding habits to improve comfort and handling. Adjusting the reach angle can improve acceleration, braking, and cornering performance, enhancing overall performance.

[0026] Enhanced safety helps reduce tire wear and extend tire life. By optimizing handling and reducing wear, maintenance and replacement costs can be reduced in the long run.

[0027] In summary, this invention not only improves the handling and adaptability of motorcycles, but also indirectly enhances their safety, economy, and market competitiveness.

Claims

1. A front end angle adjustment mechanism for a motorcycle comprising a frame (1), characterized in that: The top and bottom of the frame (1) are detachably mounted with flange seats (2). A bearing ring (3) is embedded inside the flange seat (2). An oil seal ring (4) is embedded between the bottom of the bearing ring (3) and the flange seat (2). A dust cover (5) is detachably mounted between the top of the bearing ring (3) and the flange seat (2). A steering column (6) is embedded inside the bearing ring (3). A locking nut (7) is threaded onto the top of the steering column (6). An upper connecting plate (8) and a lower connecting plate (9) are fixedly mounted on the top and bottom of the steering column (6), respectively. The inner circle axis of the flange seat (2) and the outer circle axis of the flange seat (2) form an angle α.

2. The motorcycle rake adjustment mechanism of claim 1, wherein: The frame (1) has mounting holes corresponding to the flange seat (2), and the upper and lower mounting holes are on the same axis, which is also on the same axis as the outer circle axis of the flange seat (2); the inner circle axis of the flange seat (2) is on the same axis as the axis of the steering column (6).

3. The motorcycle rake adjustment mechanism of claim 2, wherein: The included angle α = 0.5°.

4. The motorcycle fore-end angle adjustment mechanism according to claim 2, characterized in that: The initial angle between the inner circle axis of the flange seat (2) and the vertical line is 24°.

5. The motorcycle fore-end angle adjustment mechanism according to claim 1, characterized in that: The flange seat (2) is removed, rotated 180° and installed. The angle between the inner circle axis of the flange seat (2) and the vertical line is 25°.

6. The motorcycle fore-end angle adjustment mechanism according to claim 1, characterized in that: Both ends of the steering column (6) extend to the outside of the frame (1).

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