Rocker arm type electric steering structure for handlebar

Abstract

The utility model provides a rocker arm type electric steering structure for a handlebar. The rocker arm type electric steering structure comprises an electric tubular column assembly, a motor, a controller, a rotating shaft, a universal joint, a transmission shaft, a mounting tube, a bearing and a steering rocker arm, the electric tubular column assembly comprises an upper half section of electric tubular column and a lower half section of mechanical tubular column, and the upper half section of electric tubular column is connected with the controller through a motor and used for providing electric power; the universal joint is connected between the lower half section of the electric tubular column and the mechanical tubular column and used for achieving angle adjustment of the transmission shaft and the electric tubular column assembly. On the basis of a common rocker arm steering structure, electric power assisting is ingeniously connected through the universal joint and the lower mechanical tubular column, and the dream that rocker arm steering increases power assisting is achieved; and through the universal joint and the lower mechanical tubular column, the history that the rocker arm steering structure cannot have an included angle is changed.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle steering systems, and more specifically to a rocker-arm type electric steering structure used for a handlebar. Background Art

[0002] At present, with the increasing congestion of urban traffic and people's pursuit of personalized travel methods, three-wheeled vehicles have gradually become a new means of transportation on the market. Three-wheeled vehicles have the advantages of strong flexibility, high body stability and unique driving experience, and are widely used in urban commuting, tourism and other scenes. However, since these vehicles usually use motorcycle qualifications, they can only use the steering structure of the steering handle, which is the requirement and standard of automobiles, and the design of the steering mechanism is very difficult.

[0003] Traditional three-wheeled vehicles mostly use steering wheel steering systems. This structure cannot be announced in the motorcycle qualification, which means it cannot be put on the road normally, and the market limitations are very large. The announcement requires the use of a steering handle, and its turning angle cannot exceed 45° on one side, otherwise it may cause interference between operation and human body, affecting the vehicle's handling stability and safety. Due to the small transmission ratio of the conventional steering machine and the small turning angle of the steering handle, according to the formula of steering handle turning angle × transmission ratio = rack stroke, the rack stroke is relatively small, so the turning angle of the tire is small, the turning radius is large, and the vehicle's maneuverability is very poor. Therefore, the steering handle cannot be equipped with an ordinary steering machine, but if a rocker arm steering structure is used, its transmission ratio is too large, it is difficult to turn the steering handle, and no one dares to buy the vehicle when it is listed.

[0004] In order to reduce the steering force of the reverse tricycle, we added an electric power steering (EPS). However, the traditional electric power steering column has a transmission shaft under it, so it is impossible to install a rocker arm or fix it to the body. We combined the characteristics of the universal transmission shaft under the electric column and the rocker arm steering structure that the mechanical column is connected to the end (this structure cannot directly install the electric power due to space limitations below) to install the rocker arm. We disconnected the mechanical column in the middle and added a universal joint. The upper part is the traditional electric power steering column, and the lower part is the universal joint plus a fixed mechanical column, which solves the problem of increasing the power of the rocker arm steering structure. Utility Model Content

[0005] The utility model discloses an innovative steering power-assisting structure, which can meet the special needs of a reverse three-wheeled vehicle and provide a larger steering angle and easier operation.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions, which mainly include:

[0007] A rocker-arm electric steering structure used for a handlebar, comprising an electric column assembly, a motor, a controller, a rotating shaft, a universal joint, a transmission shaft, a mounting tube, a bearing and a steering rocker arm;

[0008] The electric column assembly includes an upper electric column and a lower mechanical column, wherein the upper electric column is connected to an electric control box via a motor to provide electric assistance;

[0009] The universal joint is connected between the lower half of the electric pipe column and the mechanical pipe column, and is used to achieve angle adjustment between the transmission shaft and the electric pipe column assembly.

[0010] In order to further optimize the above solution, the transmission shaft is connected to the rotating shaft through a universal joint, and the transmission shaft is arranged in the mounting tube and supported by bearings.

[0011] In order to further optimize the above solution, the mounting tube is fixed on the vehicle chassis to support and fix the electric column assembly and the transmission shaft.

[0012] In order to further optimize the above solution, the steering rocker arm is installed at the lower end of the transmission shaft to transmit the steering force to the front wheels of the vehicle.

[0013] In order to further optimize the above solution, the electric control box is arranged on the upper part of the electric column assembly, and the motor and the vehicle control system are connected by cables. The control system receives the driver's steering signal and controls the output of the motor.

[0014] It can be seen from the above technical solution that compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Improve steering angle: By using a universal joint connection on the electric column assembly, the angle of the drive shaft can be flexibly adjusted. When the single-side turning angle of the steering handle does not exceed 45°, the inner turning angle of the front wheel can reach 35°. This improves the maneuverability and controllability of the vehicle in narrow sections and complex road conditions.

[0016] 2. Reduce the operating force of personnel. By adding an electric column, a universal joint, and a lower mechanical column, the problem of difficulty in increasing the power assist of a rocker arm steering structure is solved.

[0017] 3. Reduce spatial interference: The electric column assembly adopts a segmented design with an upper electric column and a lower mechanical column, which effectively separates the electric power assist device and the mechanical structure, avoiding the problem of spatial interference between the electric power assist device and other components in the traditional rocker arm structure.

[0018] 4. Improve installation convenience: The electric column assembly and mounting pipe in this structure are reasonably designed, which is convenient for fixed installation on the vehicle chassis. At the same time, it simplifies the structural assembly process and improves the convenience of production and maintenance.

[0019] 5. Enhanced system reliability: Through the coordinated cooperation of the controller and the motor, the utility model can provide stable electric power assistance according to the driver's instructions, enhance the response speed and accuracy of the steering system, and thus improve the reliability of the overall system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0022] Figure 2 It is a schematic diagram of the bottom structure of the utility model.

[0023] Explanation of the reference numerals: 1-electric column assembly, 2-motor, 201-controller, 3-rotating shaft, 4-universal joint, 5-drive shaft, 6-mounting tube, 7-bearing, 8-steering rocker arm. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] A rocker arm electric steering structure used in a direction handle, such as Figure 1 and Figure 2 As shown, the rocker arm type electric steering structure of the utility model includes an electric column assembly 1, a motor 2, a controller 201, a rotating shaft 3, a universal joint 4, a transmission shaft 5, a mounting tube 6, a bearing 7 and a steering rocker arm 8.

[0027] The electric column assembly 1 includes an upper electric column and a lower mechanical column. The upper electric column is connected to the electric control box 201 through the motor 2 to provide electric power. The electric control box 201 is arranged on the upper part of the electric column assembly 1 and is connected to the motor 2 and the vehicle control system through a cable to receive the driver's steering signal and control the output of the motor 2.

[0028] The universal joint 4 is connected between the lower half of the electric column and the mechanical column, realizing the angle adjustment of the transmission shaft 5 and the electric column assembly 1. The transmission shaft 5 is connected to the rotating shaft 3 through the universal joint 4. The rotating shaft 3 is arranged in the mounting tube 6 and supported by the bearing 7 to ensure the smooth rotation of the rotating shaft 3.

[0029] The mounting tube 6 is fixed on the vehicle chassis to support and fix the electric column assembly 1 and the transmission shaft 5. The steering rocker arm 8 is installed at the lower end of the transmission shaft 5 to transmit the steering force to the front wheels of the vehicle.

[0030] Through this design, the rocker arm type electric steering structure of the utility model can achieve a front wheel inner turning angle of 35° when the single-side turning angle of the steering handle does not exceed 45°, effectively solving the application limitation problem of traditional steering gear on reverse three-wheel vehicles. At the same time, the design of the electric column assembly avoids the interference of the electric power assist device with other structures, improving the safety and reliability of the steering system.

[0031] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those 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 will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rocker-arm electric steering structure used in a handlebar, characterized in that: It comprises an electric column assembly (1), a motor (2), a controller (201), a rotating shaft (3), a universal joint (4), a transmission shaft (5), a mounting tube (6), a bearing (7) and a steering rocker arm (8); The electric column assembly (1) comprises an upper electric column and a lower mechanical column, wherein the upper electric column is connected to a controller (201) via a motor (2) for providing electric assistance; The universal joint (4) is connected between the lower half of the electric pipe column and the mechanical pipe column, and is used to achieve angle adjustment between the transmission shaft (5) and the electric pipe column assembly (1).

2. The rocker arm type electric steering structure used for a handlebar according to claim 1, characterized in that: The transmission shaft (5) is connected to the rotating shaft (3) via a universal joint (4); the transmission shaft (5) is arranged in a mounting tube (6) and supported by a bearing (7).

3. A rocker arm type electric steering structure used for a handlebar according to claim 1 or 2, characterized in that: The mounting tube (6) is fixed on the vehicle chassis and is used to support and fix the electric column assembly (1) and the transmission shaft (5).

4. A rocker arm type electric steering structure used for a handlebar according to any one of claims 1 to 3, characterized in that: The steering rocker arm (8) is mounted on the lower end of the transmission shaft (5) and is used to transmit the steering force to the front wheels of the vehicle.

5. A rocker arm type electric steering structure used for a handlebar according to any one of claims 1 to 4, characterized in that: The controller (201) is arranged on the upper part of the electric column assembly (1), and is connected to the motor (2) and the vehicle control system via a cable. The control system receives the steering signal of the driver and controls the output of the motor (2).

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