Steering gear structure for steering handlebar

Abstract

The utility model provides a steering gear structure used for a steering handle. The structure comprises a ball pin assembly, a straight pull rod, a control shaft, a dustproof sleeve, a shell, a sector gear, a shell cover, a bolt, a bearing, an oil seal and a special nut. According to the structure, the steering handlebar is rotated, the input shaft drives the sector gear and the driving rack to move left and right, and tire steering is achieved. According to the structural design of the steering gear box, the steering handle is rotated by 90 degrees, the steering stroke is increased to the maximum extent, and the minimum turning radius is achieved; and meanwhile, the input force of personnel is reduced through the transmission ratio of the steering gear box.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle steering systems, and more particularly to a steering machine structure used for a steering handle. Background Art

[0002] With the development of modern transportation, a variety of new vehicle designs have emerged on the market. In particular, inverted three-wheeled vehicles have attracted considerable attention for their unique stability and maneuverability. These vehicles typically feature two wheels in front and one in the rear, which not only improves stability but also provides greater steering flexibility. Due to the unique characteristics of these vehicles, steering gear design is more challenging and requires higher standards.

[0003] Traditional steering gears use the dual-output rack-and-pinion structure found in standard automobile steering wheels. However, regulations for three-wheeled vehicles require a handlebar-mounted steering mechanism for compliance, and traditional steering wheels are unable to meet these requirements. While standard steering wheels can rotate 360° or more, the handlebar can only rotate 45° per side. Further rotations can interfere with human and vehicle body movements, making operation difficult and unsafe.

[0004] Therefore, a new steering machine structure is needed to meet the special needs of reverse three-wheeled vehicles. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an innovative steering machine structure, which can meet the special needs of reverse three-wheeled vehicles, increase the rack stroke, provide a larger steering angle and ensure the safety and stability of operation.

[0006] To achieve the above objectives, the present invention provides the following technical solutions, which mainly include:

[0007] A steering mechanism structure for a steering handlebar comprises a ball pin assembly, a straight pull rod, a control shaft, a dust cover, a housing, sector teeth, a housing cover, bolts, bearings, an oil seal and a special nut. The ball pin assembly is connected to one end of the straight pull rod, and the other end of the straight pull rod is connected to the housing via the dust cover; the housing cover is fixed to the housing by bolts; the straight pull rods are connected to the control shaft via a universal ball joint; the control shaft is provided with a rack; the sector teeth are rotatably connected within the housing via a rotating shaft, and the rack meshes with the sector teeth to transmit the rotation of the steering handlebar to the sector teeth, thereby driving the steering of the vehicle; the ball pin assembly is fixed to the straight pull rod by a threaded connection, and the other end of the straight pull rod is connected to the housing via the dust cover to prevent dust and impurities from entering; the sector teeth are provided with an arc groove, and a column is fixedly connected to the housing. The column is slidably connected to the arc groove to limit the rotation angle of the sector teeth; the bearing is disposed within the housing to support the rotating shaft, and the oil seal is disposed next to the bearing to seal lubricating oil and prevent external contaminants from entering.

[0008] Preferably, the special nut is used to fix and adjust the tightness of the ball pin assembly to ensure the stability of the steering gear structure.

[0009] Preferably, the housing is fixed to the vehicle frame by bolts to ensure stable installation and safe use of the steering gear structure.

[0010] It can be seen from the above technical solutions that compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) Increase rack travel and reduce turning radius.

[0012] (2) High operational safety: The system design takes into account the characteristics of the reverse three-wheeled vehicle, avoiding the safety hazards caused by the excessive steering angle of the traditional steering gear structure.

[0013] (3) Strong stability: The design of special nuts and bearings ensures the stability of the steering gear and reduces the vibration and deviation of the steering handle during driving.

[0014] (4) Precise steering: The precise meshing of the sector teeth and the rack ensures the accurate transmission of the steering handle rotation, improving controllability and driving safety.

[0015] (5) Easy maintenance: The design of dust cover and oil seal effectively protects internal components and reduces maintenance frequency and cost.

[0016] (6) Wide applicability: This structure is not only suitable for three-wheeled vehicles, but can also be applied to other special vehicle designs that require large steering angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the bottom structure of the utility model.

[0020] Explanation of the reference numerals: 1-ball pin assembly, 2-straight pull rod, 201-control shaft, 3-dust cover, 4-housing, 401-column, 5-sector teeth, 501-arc groove, 6-housing cover, 7-bolt, 8-bearing, 9-oil seal, 10-special nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example

[0023] A steering machine structure used in a steering handle, such as Figure 1 and Figure 2 As shown, it includes the following components:

[0024] Ball and pin assembly 1: Made of high-strength steel, it is threaded onto one end of the pull rod 2. This design ensures a tight connection between the ball and pin assembly 1 and provides smooth rotation. The use of ball and pin assembly 1 increases the durability and reliability of the system.

[0025] Tie rod 2: The other end of tie rod 2 is connected to housing 4 via a dust boot 3. Dust boot 3 is made of a flexible material, effectively preventing the ingress of dust and impurities while maintaining rotational flexibility. Tie rod 2 is used to transmit the driver's operating force to control shaft 201, achieving steering operation.

[0026] Control shaft 201: Two straight tie rods 2 are connected by a universal ball joint. A precision-machined rack is mounted on control shaft 201, which meshes tightly with the sector teeth 5. This design ensures that handlebar rotation is accurately transmitted to the sector teeth 5, thereby driving the vehicle's steering.

[0027] Segment 5: Segment 5 is rotatably connected to housing 4 via a rotating shaft. Segment 5 is provided with an arcuate slot 501 to limit its rotation angle. Segment 501 is slidably connected to a post 401 inside housing 4, which is fixed to housing 4. This design not only ensures the stability of segment 5 but also prevents oversteer.

[0028] Housing 4: Made of aluminum alloy, it is lightweight and high-strength. A column 401 is fixed inside housing 4, along with bearings 8 and oil seals 9. Bearings 8 support the shaft, ensuring smooth rotation of the sector gears 5. Oil seals 9 prevent lubricant leakage and external contaminants from entering, thereby protecting the internal structure.

[0029] Housing cover 6: Fixed to housing 4 by bolts 7, it is used to seal and protect the components inside the housing. The design of housing cover 6 ensures the sealing of the system and facilitates subsequent maintenance.

[0030] Special nut 10: used to adjust the tightness of the ball pin assembly 1. By adjusting the special nut 10, the connection stability between the ball pin assembly 1 and the straight tie rod 2 can be ensured, loosening can be avoided, and the overall reliability of the system can be improved.

[0031] Instructions:

[0032] In actual operation, when the driver turns the steering wheel, the rack on the control shaft 201 drives the sector gear 5 to rotate. The rotation of the sector gear 5 is transmitted to other components within the housing 4 via the rotating shaft, ultimately driving the vehicle's front wheels to steer. This design ensures precise and flexible steering operation while preventing vehicle damage or safety hazards caused by oversteering.

[0033] Through the above structural design, this embodiment provides a steering gear structure with high stability and durability, which is particularly suitable for reverse three-wheeled vehicles. This structure not only improves the vehicle's handling performance, but also extends the service life of the steering system.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0035] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steering mechanism structure used in a steering handle, characterized by: The invention comprises a ball pin assembly (1), a straight pull rod (2), a control shaft (201), a dust cover (3), a housing (4), a sector tooth (5), a housing cover (6), a bolt (7), a bearing (8), an oil seal (9) and a special nut (10). The ball pin assembly (1) is connected to one end of the straight pull rod (2), and the other end of the straight pull rod (2) is connected to the housing (4) through the dust cover (3); the housing cover (6) is fixed to the housing (4) through a bolt (7); the straight pull rod (2) is connected to the control shaft (201) through a universal ball head; the control shaft (201) is provided with a rack (202); the sector tooth (5) is rotatably connected in the housing (4) through a rotating shaft, and the rack (202) is engaged with the sector tooth (5). The invention is to realize the transmission of the rotation operation of the steering handle to the rotation of the sector tooth (5), thereby driving the steering of the vehicle; the ball pin assembly (1) is fixed on the straight pull rod (2) by a threaded connection, and the other end of the straight pull rod (2) is connected to the housing (4) through a dust cover (3) to prevent dust and impurities from entering; the sector tooth (5) is provided with an arc groove (501), and the housing (4) is fixedly connected with a column (401), and the column (401) is slidably connected to the arc groove (501) to limit the rotation angle of the sector tooth (5); the bearing (8) is arranged in the housing (4) to support the rotating shaft, and the oil seal (9) is arranged next to the bearing (8) to seal the lubricating oil and prevent external pollutants from entering.

2. The steering mechanism structure for a steering handle according to claim 1, characterized in that: The special nut (10) is used to fix and adjust the tightness of the ball pin assembly (1) to ensure the stability of the steering gear structure.

3. The steering mechanism structure for a steering handle according to claim 1, characterized in that: The housing (4) is fixed to the vehicle frame via bolts (7) to ensure stable installation and safe use of the steering gear structure.

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