CN215663633U

CN215663633U - Rack and pinion formula electric power steering with variable speed function

Info

Publication number: CN215663633U
Application number: CN202121886616.5U
Authority: CN
Inventors: 李振全; 童平
Original assignee: Guangzhou Kuayue Auto Parts And Accessories Industry Co ltd
Current assignee: Guangzhou Kuayue Auto Parts And Accessories Industry Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-01-28
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses a rack-and-pinion type electric power steering gear with a speed change function, which comprises a steering gear body, wherein a transmission rod on the steering gear body penetrates through a torque-variable gear box and is in transmission connection with an auxiliary motor on the top surface of the torque-variable gear box, the transmission rod is in transmission connection with an input shaft through the torque-variable gear box, and a torque sensor is arranged on the input shaft. According to the utility model, the input shaft rotates and drives the torque sensor, so that the torque sensor measures the torque and the direction of the input shaft, and sends detection information to the vehicle-mounted control processing module, the vehicle-mounted control processing module calculates the current optimal transmission ratio by combining vehicle speed information, and sends information to the torque-converting gear box and the auxiliary motor, so that on one hand, the transmission ratio is adjusted, and the steering sensitivity is adjusted; on the other hand, the output power of the auxiliary motor is adjusted, and the transmission damping of the input shaft is adjusted, so that the requirements of small low-speed steering stroke and stable high-speed steering are met.

Description

Rack and pinion formula electric power steering with variable speed function

Technical Field

The utility model relates to the field of steering gears, in particular to a rack and pinion type electric power steering gear with a speed change function.

Background

The speed ratio characteristic of the steering system is one of important factors for determining the lightness and the stability of steering of the automobile. At present, the electric assistant steering system can not reduce the steering forming mode to reduce the labor intensity of a driver when parking in situ at low speed, and can not meet the requirement of steering stability at high speed, so that the driver needs to make a balance between safety and comfort in the actual driving process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a rack-and-pinion type electric power steering gear with a speed change function, which aims to solve the problems that the labor intensity of a driver is reduced by a mode that the steering formation cannot be reduced when parking at low speed and in situ, and the steering stability cannot be met at high speed.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a rack and pinion formula electric power steering ware with variable speed function, includes the steering gear body, transfer line on the steering gear body passes the torque converter gear box to be connected with the auxiliary motor transmission of torque converter gear box top surface, the transfer line passes through the torque converter gear box and is connected with the input shaft transmission, be equipped with torque sensor on the input shaft, torque converter gear box, auxiliary motor and torque sensor all with on-vehicle control processing module electric connection.

Further, the torque conversion gearbox is a continuously variable transmission.

Furthermore, the auxiliary motor is provided with a power supply control module for regulating and controlling the current magnitude and direction, and the signal input end of the power supply control module is electrically connected with the signal output end of the vehicle-mounted control processing module.

Furthermore, a universal connector is arranged on the input shaft and is positioned above the torque sensor.

Further, the vehicle-mounted control processing module is electrically connected with the vehicle speed sensor.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the input shaft rotates and drives the torque sensor, so that the torque sensor measures the torque and the direction of the input shaft, and sends detection information to the vehicle-mounted control processing module, the vehicle-mounted control processing module calculates the current optimal transmission ratio by combining vehicle speed information, and sends information to the torque-converting gear box and the auxiliary motor, so that on one hand, the transmission ratio is adjusted, and the steering sensitivity is adjusted; on the other hand, the output power of the auxiliary motor is adjusted, and the transmission damping of the input shaft is adjusted, so that the requirements of small low-speed steering stroke and stable high-speed steering are met.

Drawings

Fig. 1 is a schematic view showing an overall structure of a rack and pinion type electric power steering apparatus having a speed change function.

In the figure: 1. a diverter body; 2. a transmission rod; 3. a torque converting gear box; 4. an auxiliary motor; 5. an input shaft; 6. a torque sensor; 7. a vehicle-mounted control processing module; 8. a power supply control module; 9. a universal connector.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution:

the utility model provides a rack and pinion formula electric power steering ware with variable speed function, includes steering gear body 1, and transfer line 2 on the steering gear body 1 passes moment of torsion gear box 3 to be connected with the auxiliary motor 4 transmission of moment of torsion gear box 3 top surface, transfer line 2 is connected with the transmission of input shaft 5 through moment of torsion gear box 3, is equipped with torque sensor 6 on the input shaft 5, moment of torsion gear box 3, auxiliary motor 4 and torque sensor 6 all with on-vehicle control processing module 7 electric connection.

When a driver rotates a steering wheel to adjust steering, the input shaft 5 rotates and drives the torque sensor 6, so that the torque sensor 6 measures the torque magnitude and direction of the input shaft 5 and sends detection information to the vehicle-mounted control processing module 7, the vehicle-mounted control processing module 7 calculates the current optimal transmission ratio by combining vehicle speed information and sends information to the torque-converting gear box 3 and the auxiliary motor 4, and on one hand, the transmission ratio is adjusted, and the steering sensitivity is adjusted; on the other hand, the output power of the auxiliary motor 4 is adjusted, and the transmission damping of the input shaft 5 is adjusted, so that the requirements of small low-speed steering stroke and stable high-speed steering are met.

The torque-converting gear box 3 is a continuously variable transmission, and compared with the traditional gear speed change, the transmission of the continuously variable transmission is smoother, more continuous and stable, and the safety and the driving comfort are better.

The auxiliary motor 4 is provided with a power supply control module 8 for regulating and controlling the magnitude and direction of current, the signal input end of the power supply control module 8 is electrically connected with the signal output end of the vehicle-mounted control processing module 7, and the power supply control module 8 can rapidly adjust the magnitude and direction of the output acting force of the auxiliary motor 4 according to the command sent by the vehicle-mounted control processing module 7, so that the steering assistance can be adjusted. The feedback to the steering wheel is the weight of the steering.

The input shaft 5 is provided with the universal connector 9, and the universal connector 9 is positioned above the torque sensor 6, so that the position of the input shaft 5 can be conveniently adjusted, and the stability of transmission is ensured.

The vehicle-mounted control processing module 7 is electrically connected with the vehicle speed sensor, can acquire vehicle speed information constantly, and is matched with the torque sensor 6 to measure the torque magnitude and the direction of the input shaft 5, so that the steering angle and the steering weight of the steering wheel can be adjusted and controlled in time.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which includes the appended claims and their equivalents.

Claims

1. The utility model provides a rack and pinion formula electric power steering ware with variable speed function, includes steering gear body (1), its characterized in that: transmission line (2) on steering gear body (1) pass torque conversion gear box (3) to be connected with auxiliary motor (4) transmission of torque conversion gear box (3) top surface, transmission line (2) are connected with input shaft (5) transmission through torque conversion gear box (3), be equipped with torque sensor (6) on input shaft (5), torque conversion gear box (3), auxiliary motor (4) and torque sensor (6) all with on-vehicle control processing module (7) electric connection.

2. A rack and pinion type electric power steering apparatus having a speed change function according to claim 1, wherein: the torque conversion gear box (3) is a continuously variable transmission.

3. A rack and pinion type electric power steering apparatus having a speed change function according to claim 1, wherein: the auxiliary motor (4) is provided with a power supply control module (8) for regulating and controlling the current magnitude and direction, and the signal input end of the power supply control module (8) is electrically connected with the signal output end of the vehicle-mounted control processing module (7).

4. A rack and pinion type electric power steering apparatus having a speed change function according to claim 1, wherein: the torque sensor is characterized in that a universal connector (9) is arranged on the input shaft (5), and the universal connector (9) is located above the torque sensor (6).

5. A rack and pinion type electric power steering apparatus having a speed change function according to claim 1, wherein: and the vehicle-mounted control processing module (7) is electrically connected with the vehicle speed sensor.