Labor-saving steering mechanism of inverted three-wheel motorcycle and inverted three-wheel motorcycle comprising same

Abstract

The invention discloses an inverted three-wheeled motorcycle labor-saving steering mechanism and an inverted three-wheeled motorcycle comprising the same, and belongs to the technical field of inverted tricycles. The front suspension main body is mounted at the lower end of the frame; the first end of the steering driving arm is connected with the front fork shaft fixing position; the steering driven arm is rotatably mounted on the front suspension main body; the first end of the steering driving arm adjusting rod is hinged to the second end of the steering driving arm, and the second end of the steering driving arm adjusting rod is hinged to the steering driven arm; an included angle is formed between the steering driving arm and the steering driving arm adjusting rod. By arranging the steering driving arm, the steering driven arm and the steering driving arm adjusting rod, a steering force arm is increased, and steering is more labor-saving; and meanwhile, the steering stability is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of reverse tricycles, and in particular relates to a labor-saving steering mechanism of a reverse tricycle and a reverse tricycle comprising the mechanism. Background Art

[0002] The reverse three-wheeled motorcycle has two front wheels and one rear wheel. The two front wheels have steering functions, while the rear wheel has a driving function. In complex terrain environments, it has better stability and safety than a two-wheeled vehicle. It has a simpler structure and lower cost. Therefore, it is very popular among consumers.

[0003] However, the front wheel steering mechanism of the existing reverse three-wheeled motorcycle directly drives the left front wheel assembly and the right front wheel assembly to steer through the front fork shaft. When steering, the steering arm is small, the operation is laborious and the flexibility is poor. Summary of the invention

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] A labor-saving steering mechanism for a reverse three-wheeled motorcycle, comprising:

[0006] A front fork shaft, the front fork shaft being rotatably mounted on the frame;

[0007] A front suspension body, the front suspension body being mounted on the lower end of the vehicle frame;

[0008] A steering drive arm, wherein a first end of the steering drive arm is connected to the front fork shaft at a fixed position;

[0009] A steering slave arm, the steering slave arm being rotatably mounted on the front suspension body;

[0010] A steering drive arm adjusting rod, wherein the first end of the steering drive arm adjusting rod is hinged to the second end of the steering drive arm, and the second end of the steering drive arm adjusting rod is hinged to the steering driven arm; an angle is set between the steering drive arm and the steering drive arm adjusting rod;

[0011] When turning, the front fork shaft is rotated, and the front fork shaft drives the steering drive arm to swing synchronously. The steering drive arm drives the steering slave arm to swing through the steering drive arm adjusting rod to change the relative angle between the steering slave arm and the front suspension body, and then the steering slave arm drives the left front wheel assembly and the right front wheel assembly to deflect synchronously in the same direction to change the direction of travel.

[0012] Furthermore, the steering drive arm and the steering drive arm adjustment rod are located on the same side of the front suspension body.

[0013] Furthermore, the steering slave arm is a T-shaped structure, one end of the cross arm of the steering slave arm is hinged to the front suspension body, and the other end is hinged to the second end of the steering drive arm adjusting rod, and a steering connecting seat is provided at one end of the vertical arm of the steering slave arm away from the cross arm, and the steering connecting seat is drivingly connected to the left front wheel assembly and the right front wheel assembly through a steering drive component to drive the left front wheel assembly and the right front wheel assembly to rotate synchronously in the same direction; an avoidance space for avoiding the front suspension body is provided at the connection between the vertical arm of the steering slave arm and the cross arm.

[0014] Furthermore, a steering slave arm support rod is provided on the front suspension body, and the steering slave arm support rod is hingedly connected to the cross arm of the steering slave arm.

[0015] Furthermore, the steering drive assembly includes a left steering rod and a right steering rod, the first end of the left steering rod and the first end of the right steering rod are both hinged to the steering connecting seat; the second end of the left steering rod is connected to the left front wheel cleat assembly through a left universal ball head, and the left front wheel cleat assembly is installed on the left front wheel hub assembly; the second end of the right steering rod is connected to the right front wheel cleat assembly through a right universal ball head, and the right front wheel cleat assembly is installed on the right front wheel hub assembly.

[0016] Furthermore, the angle between the vertical axis of the left front wheel clasp assembly and the right front wheel clasp assembly and the normal line of the ground tire landing point is 10°-12°.

[0017] Furthermore, the rotation plane of the steering drive arm adjusting rod is parallel to the rotation plane of the steering connecting seat.

[0018] Furthermore, the first end of the steering drive arm adjusting rod and the second end of the steering drive arm, as well as the second end of the steering drive arm adjusting rod and the steering driven arm are both hingedly connected via ball heads.

[0019] A reverse three-wheeled motorcycle comprises any one of the above-mentioned labor-saving steering mechanisms for the reverse three-wheeled motorcycle.

[0020] Beneficial effects:

[0021] The present invention increases the steering force arm by arranging the steering drive arm, the steering driven arm and the steering drive arm adjusting rod, thereby making the steering more labor-saving; at the same time, the steering stability is also increased.

[0022] The present invention can reduce the force arm required for steering and improve the operational stability by setting a special angle between the vertical axes of the left front wheel clasp assembly and the right front wheel clasp assembly and the normal line of the ground tire landing point. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the overall structure of the labor-saving steering mechanism of the inverted three-wheeled motorcycle provided by the present invention;

[0024] Figure 2 Schematic diagrams showing the overall structure of the labor-saving steering mechanism of the inverted three-wheeled motorcycle provided by the present invention from other viewing angles;

[0025] Figure 3 Schematic diagrams showing the overall structure of the labor-saving steering mechanism of the inverted three-wheeled motorcycle provided by the present invention from other viewing angles;

[0026] Figure 4 for Figure 3 Middle I is a partial enlarged view;

[0027] Figure 5 for Figure 3 Middle II partial enlarged view;

[0028] Figure 6 for Figure 3 Middle III partial enlarged view;

[0029] Among them, 1. handlebar; 2. front fork shaft; 3. steering drive arm; 4. steering drive arm adjustment rod; 5. steering follower arm; 6. right front wheel assembly; 7. steering connecting seat; 8. right universal ball head; 9. right steering tie rod; 10. hinge bolt; 11. left steering tie rod; 12. left universal ball head; 13. left front wheel assembly; 14. front suspension body; 15. ball head; 16. left front wheel clevis assembly; 17. steering follower arm support rod; 18. right front wheel clevis assembly. DETAILED DESCRIPTION

[0030] Example 1

[0031] refer to Figure 1-Figure 6 , a labor-saving steering mechanism for a reverse three-wheeled motorcycle, comprising:

[0032] A front fork shaft 2, the front fork shaft 2 is rotatably mounted on the frame;

[0033] A front suspension body 14, which is mounted on the lower end of the vehicle frame;

[0034] A steering drive arm 3, wherein a first end of the steering drive arm 3 is connected to the front fork shaft 2 at a fixed position;

[0035] A steering slave arm 5, the steering slave arm 5 is rotatably mounted on the front suspension body 14;

[0036] A steering drive arm adjusting rod 4, wherein the first end of the steering drive arm adjusting rod 4 is hinged to the second end of the steering drive arm 3, and the second end of the steering drive arm adjusting rod 4 is hinged to the steering driven arm 5; an angle is set between the steering drive arm 3 and the steering drive arm adjusting rod 4;

[0037] When turning, the front fork shaft 2 is rotated, and the front fork shaft 2 drives the steering drive arm 3 to swing synchronously. The steering drive arm 3 drives the steering slave arm 5 to swing through the steering drive arm adjusting rod 4 to change the relative angle between the steering slave arm 5 and the front suspension body 14, and then the steering slave arm 5 drives the left front wheel assembly 13 and the right front wheel assembly 6 to deflect synchronously in the same direction to change the direction of travel.

[0038] In this embodiment, the steering drive arm 3 and the steering drive arm adjusting rod 4 are located on the same side of the front suspension body 14 .

[0039] When performing a steering operation, the angle between the steering drive arm 3 and the steering drive arm adjusting rod 4 will change accordingly. When the steering angle is larger, the required steering force is also larger, so that high-speed steering stability can be achieved.

[0040] In this embodiment, a steering handle 1 is provided at one end of the front fork shaft 2 away from the front suspension body 14 to facilitate the control of the steering rotation of the front fork shaft 2 .

[0041] In this embodiment, the steering slave arm 5 is a T-shaped structure, one end of the horizontal arm of the steering slave arm 5 is hinged to the front suspension body 14, and the other end is hinged to the second end of the steering drive arm adjusting rod 4, and a steering connecting seat 7 is provided at the end of the vertical arm of the steering slave arm 5 away from the horizontal arm. The steering connecting seat 7 is connected to the left front wheel assembly 13 and the right front wheel assembly 6 through a steering drive component to drive the left front wheel assembly 13 and the right front wheel assembly 6 to rotate synchronously in the same direction; an avoidance space for avoiding the front suspension body 14 is provided at the connection between the vertical arm and the horizontal arm of the steering slave arm 5.

[0042] Specifically, a steering slave arm support rod 17 is provided on the front suspension body 14 , and the steering slave arm support rod 17 is hingedly connected to the cross arm of the steering slave arm 5 . The front suspension body 14 is hingedly connected to the cross arm of the steering slave arm 5 through the steering slave arm support rod 17 .

[0043] In this embodiment, the steering drive assembly includes a left steering rod 11 and a right steering rod 9. The first end of the left steering rod 11 and the first end of the right steering rod 9 are both hinged to the steering connecting seat 7; the second end of the left steering rod 11 is connected to the left front wheel clevis assembly through the left universal ball head 12, and the left front wheel clevis assembly is installed on the left front wheel hub assembly; the second end of the right steering rod 9 is connected to the right front wheel clevis assembly through the right universal ball head 8, and the right front wheel hub assembly is installed on the right front wheel clevis assembly.

[0044] The steering connecting seat 7 is hingedly connected to the first end of the left steering tie rod 11 and the first end of the right steering tie rod 9 via a hinge bolt 10 .

[0045] In this embodiment, the angle between the vertical axis of the left front wheel clasp assembly and the right front wheel clasp assembly and the normal of the ground tire landing point is 10°-12°, preferably 11°-12°, and further preferably 11.7°.

[0046] Specifically, after the angle between the vertical axis of the left front wheel clasp assembly and the normal line of the ground tire landing point is reduced, the distance to the tire landing point can be shortened, that is, the lever arm is reduced. The driving force required when turning is certain, and the shorter the lever arm, the smaller the torque required.

[0047] In this embodiment, the rotation plane of the steering drive arm adjusting rod 4 is parallel to the rotation plane of the steering connecting seat 7 .

[0048] In this embodiment, the first end of the steering drive arm adjusting rod 4 and the second end of the steering drive arm 3 , as well as the second end of the steering drive arm adjusting rod 4 and the steering driven arm 5 are both hingedly connected via a ball head 15 .

[0049] This embodiment increases the steering force arm by arranging the steering drive arm, the steering driven arm and the steering drive arm adjustment rod, thereby making the steering more labor-saving; at the same time, the steering stability is also increased.

[0050] Example 2

[0051] A reverse three-wheeled motorcycle comprises the reverse three-wheeled motorcycle labor-saving steering mechanism provided in embodiment 1.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A labor-saving steering mechanism for a reverse three-wheeled motorcycle, characterized in that: include: A front fork shaft, the front fork shaft being rotatably mounted on the frame; A front suspension body, the front suspension body being mounted on the lower end of the vehicle frame; A steering drive arm, wherein a first end of the steering drive arm is connected to the front fork shaft at a fixed position; A steering slave arm, the steering slave arm being rotatably mounted on the front suspension body; A steering drive arm adjusting rod, wherein the first end of the steering drive arm adjusting rod is hinged to the second end of the steering drive arm, and the second end of the steering drive arm adjusting rod is hinged to the steering driven arm; an angle is set between the steering drive arm and the steering drive arm adjusting rod; When turning, the front fork shaft is rotated, and the front fork shaft drives the steering drive arm to swing synchronously. The steering drive arm drives the steering slave arm to swing through the steering drive arm adjusting rod to change the relative angle between the steering slave arm and the front suspension body, and then the steering slave arm drives the left front wheel assembly and the right front wheel assembly to deflect synchronously in the same direction to change the direction of travel.

2. The labor-saving steering mechanism of the inverted three-wheeled motorcycle according to claim 1, characterized in that: The steering drive arm and the steering drive arm adjusting rod are located on the same side of the front suspension body.

3. The labor-saving steering mechanism of the inverted three-wheeled motorcycle according to claim 1, characterized in that: The steering slave arm is a T-shaped structure, one end of the cross arm of the steering slave arm is hinged to the front suspension body, and the other end is hinged to the second end of the steering drive arm adjusting rod, and a steering connecting seat is provided at one end of the vertical arm of the steering slave arm away from the cross arm, and the steering connecting seat is drivingly connected to the left front wheel assembly and the right front wheel assembly through a steering drive component to drive the left front wheel assembly and the right front wheel assembly to rotate synchronously in the same direction; an avoidance space for avoiding the front suspension body is provided at the connection between the vertical arm of the steering slave arm and the cross arm.

4. The labor-saving steering mechanism of the inverted three-wheeled motorcycle according to claim 3, characterized in that: A steering slave arm support rod is arranged on the front suspension body, and the steering slave arm support rod is hingedly connected to the cross arm of the steering slave arm.

5. The labor-saving steering mechanism of the inverted three-wheeled motorcycle according to claim 3, characterized in that: The steering drive assembly includes a left steering rod and a right steering rod, the first end of the left steering rod and the first end of the right steering rod are both hinged to the steering connecting seat; the second end of the left steering rod is connected to the left front wheel clevis assembly through a left universal ball head, and the left front wheel clevis assembly is installed on the left front wheel hub assembly; the second end of the right steering rod is connected to the right front wheel clevis assembly through a right universal ball head, and the right front wheel hub assembly is installed on the right front wheel clevis assembly.

6. The labor-saving steering mechanism of the inverted three-wheeled motorcycle according to claim 5, characterized in that: The angle between the vertical axis of the left front wheel clasp assembly and the right front wheel clasp assembly and the normal line of the ground tire landing point is 10°-12°.

7. The labor-saving steering mechanism of the inverted three-wheeled motorcycle according to claim 3, characterized in that: The rotation plane of the steering drive arm adjusting rod is parallel to the rotation plane of the steering connecting seat.

8. The labor-saving steering mechanism for a reverse three-wheeled motorcycle according to claim 1, characterized in that: The first end of the steering drive arm adjusting rod and the second end of the steering drive arm, as well as the second end of the steering drive arm adjusting rod and the steering driven arm are both hingedly connected via ball heads.

9. A three-wheeled motorcycle, characterized in that: The invention comprises the labor-saving steering mechanism of the inverted three-wheeled motorcycle described in any one of items 1-8.

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