CN210822439U

CN210822439U - Automobile steering system

Info

Publication number: CN210822439U
Application number: CN201921613964.8U
Authority: CN
Inventors: 金启前; 张鹰华; 袁莲清
Original assignee: Baoneng Automobile Co Ltd
Current assignee: Baoneng Automobile Group Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-06-23
Anticipated expiration: 2029-09-24

Abstract

The application relates to an automobile steering system, which comprises a steering wheel and a main shaft connected between the steering wheel and an automobile body. The main shaft is sleeved with a steering device and a telescopic device in sequence, the main shaft slides along the axis direction of the main shaft relative to the steering device, and the main shaft is rotatably connected with the telescopic device. The main shaft is further fixedly connected with a butting part, the telescopic device comprises a telescopic motor, a transmission part and a sliding part, the butting part and the sliding part are butted against each other, the telescopic motor controls the sliding part to move along the axis of the main shaft through the transmission part, and the sliding part drives the butting part to move along the direction of the axis so as to realize the telescopic movement of the steering wheel. The automobile steering system can control the height of the steering wheel, and the steering device can further guarantee the rotation of the steering wheel to be controlled, and the driving experience is improved.

Description

Automobile steering system

Technical Field

The application relates to the field of automobiles, in particular to an intelligent automobile steering system.

Background

Under the wave of new four-way (electric, networking, intelligent and sharing) of the automobile industry, the existing automobile steering wheel has single function, and the requirements of electric and intelligent automobile industry are gradually difficult to meet. On the one hand, the steering wheel with the fixed posture cannot adapt to drivers with different statures, and the driver usually needs to adapt to the fixed position of the steering wheel by adjusting the position of the front seat, so that comfortable steering wheel control experience is obtained. But such adjustments will also affect the seating space and comfort of the rear passengers.

On the other hand, with the development of the automatic driving technology, the automobile will gradually transition to an unmanned state. When the automobile is in an unmanned state, the steering wheel does not work, occupies the space in the automobile and influences the riding feeling of a driver.

SUMMERY OF THE UTILITY MODEL

The application provides an intelligent car a steering system, specifically includes following technical scheme:

the utility model provides an automobile steering system, include the steering wheel and connect in the steering wheel, with main shaft, the device and the telescoping device that turn to that the steering wheel is connected, turn to the device with the telescoping device overlaps in proper order and locates on the main shaft, the main shaft for the device that turns to is followed the axis direction of main shaft slides, the main shaft with the telescoping device rotates to be connected, the main shaft is fixedly connected with butt portion still, the telescoping device includes flexible motor, transmission portion and sliding part, the sliding part cover is located turn to the outside of device, and with butt portion connects, flexible motor passes through transmission portion control the sliding part is followed the direction of axis removes, sliding part drives butt portion follows the direction of axis removes with the adjustment the height of steering wheel.

The automobile steering system further comprises an electronic control unit, the main shaft is arranged between the steering wheel and the abutting portion, a steering angle inductor and a torque inductor are further sleeved on the main shaft, the steering angle inductor and the torque inductor are respectively connected with the electronic control unit, and the electronic control unit senses steering operation of the steering wheel through the steering angle inductor and the torque inductor.

The automobile steering system further comprises a speed reducing part and a torque feedback motor, the speed reducing part is connected with the steering device and the torque feedback motor, the torque feedback motor is connected to the electronic control unit, and the electronic control unit is used for controlling feedback torque provided by the torque feedback motor according to steering operation of the steering wheel and outputting the feedback torque to the speed reducing part.

The steering device comprises a key groove extending along the axial direction of the main shaft, and the main shaft is in sliding connection with the steering device through a flat key arranged in the key groove.

The steering device and the telescopic device are provided with a connecting bearing, and the connecting bearing is used for realizing sliding connection between the main shaft and the telescopic device.

The sliding part comprises a screw rod cylinder, the sliding part is connected with the transmission part through a screw rod through the screw rod cylinder, and the transmission part drives the screw rod cylinder to rotate so as to realize that the sliding part moves along the axis of the main shaft.

The transmission part is in gear transmission with the telescopic motor, and the transmission part further comprises an idler wheel which is used for adjusting the transmission ratio between the telescopic motor and the transmission part.

The steering wheel comprises a handle, a heating part is arranged in the handle, and the heating part is used for heating the handle.

The steering wheel comprises a control area connected between the handle and the main shaft, a multimedia device is arranged in the control area, and the multimedia device comprises a video player and an audio player.

The multimedia device further comprises a video collector and an audio collector.

The automobile steering system achieves the function that steering operation of the steering wheel is transmitted to the automobile body through the main shaft connected between the steering wheel and the automobile body. The main shaft is connected with the steering device in a sliding mode to achieve transmission of steering operation to the vehicle body, and the main shaft is further connected with the telescopic device in a rotating mode to achieve the effect of adjusting the height of the steering wheel. The telescopic device comprises a telescopic motor, a transmission part and a sliding part, the main shaft is further fixedly connected with an abutting part, the telescopic device controls the transmission part through the telescopic motor to realize that the sliding part moves along the axis of the main shaft, and the sliding part further drives the abutting part to move so as to realize telescopic movement of the steering wheel. This application auto steering system can also stretch out and draw back in order to adjust towards the driver when realizing turning to the operation transmission the height of steering wheel has promoted driver's driving and has experienced, has increased the front-seat of car and has driven space and driver's comfort level.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.

FIG. 1 is a schematic illustration of an automotive steering system provided in one embodiment of the present application;

FIG. 2 is a schematic view of an automotive steering system provided in another embodiment of the present application;

FIG. 3 is a schematic view of an automotive steering system provided in yet another embodiment of the present application;

fig. 4 is a schematic view of a steering wheel of an automobile steering system provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

Please refer to fig. 1, which illustrates a steering system 10 of an automobile for controlling the steering operation of the automobile. The automobile steering system 10 includes a steering wheel 100 and a main shaft 200, wherein the main shaft 200 is connected between the steering wheel 100 and a body (not shown) of an automobile. The main shaft 200 is further sleeved with a steering device 300 and a telescopic device 400 in sequence. Both steering device 300 and telescoping device 400 are coaxially disposed with main shaft 200. The spindle 200 and the steering device 300 are connected in a sliding manner, i.e. the spindle 200 can be displaced in a sliding manner relative to the steering device 300 in the direction of the axis 201 of the spindle 200. The spindle 200 is rotatably connected to the telescopic device 400, that is, the spindle 200 can rotate relative to the telescopic device 400, or the telescopic device 400 can rotate around the axis 201, or the telescopic device 400 can rotate relative to the spindle 200 around the axis 201.

Further, the main shaft 200 is also fixedly provided with an abutting portion 210. The telescopic device 400 includes a telescopic motor 410, a transmission part 420 and a sliding part 430. The telescopic device 400 is coaxially disposed with the main shaft 200 through the sliding portion 430, and the sliding portion 430 is sleeved outside the steering device 300, i.e., at an outer ring position of the steering device 300. The sliding portion 430 is fitted to the abutment portion 210, and the sliding portion 430 partially protrudes into the abutment portion 210 in a direction perpendicular to the axis 201. Or described as a portion of the abutment 210 being disposed between the telescoping device 400 and the steering wheel 100, and another portion of the abutment 210 being disposed on a side of the telescoping device 400 away from the steering wheel 100. Thereby, the sliding portion 430 is coupled to the spindle 200 in rotation, and the spindle 200 can be driven to slide and displace in the direction of the axis 201 by the coupling with the contact portion 210. The telescopic motor 410 is fixed on the vehicle body, the telescopic motor 410 is matched with the sliding part 430 through the transmission part 420, the transmission part 420 converts the rotation power of the telescopic motor 410 into the linear motion of the sliding part 430 along the axis 201 direction, and then the telescopic motor 410 can control the movement motion of the sliding part 430 along the axis 201 direction. Then, the sliding portion 430, through cooperation with the abutting portion 210, drives the abutting portion 210 to move synchronously along the direction of the axis 201 to achieve height adjustment of the steering wheel 100, such as lifting the steering wheel 100 or pressing down the steering wheel 100, so as to adapt to drivers of different sizes.

Because the main shaft 200 is slidably connected with the steering device 300, the main shaft 200 can relatively slide relative to the steering device 300 in the process that the main shaft 200 slides along with the sliding part 430, and the transmission sensing function of the steering device 300 on the rotation action of the main shaft 200 is not influenced. That is, the automobile steering system 10 of the present application can drive the main shaft 200 and the steering device 300 to synchronously rotate through the rotation of the steering wheel 100, so as to implement the basic function of the steering wheel 100 for controlling the direction of the automobile. Further, because of the cooperation of the telescopic device 400 and the main shaft 200, the automobile steering system 10 of the present application can also realize the height adjustment of the steering wheel 100, such as lifting the steering wheel 100 or pressing the steering wheel 100 down, so that when drivers of different statures use the steering system 10 of the present application to drive automobiles, the height of the steering wheel 100 can be adjusted through the telescopic function of the steering wheel 100, the driving space of the front-row driving seat is ensured, and more comfortable driving experience is obtained.

It should be noted that the transmission part 420 converts the rotational power of the telescopic motor 410 into the linear motion of the sliding part 430, and there are various implementations in the prior art. The realization mode at least comprises the transmission modes of a lead screw, chain transmission, belt transmission, a crank connecting rod, a worm gear and the like, and the conversion of the motion mode can be realized. Therefore, the present application does not particularly limit the specific implementation of the rotating part 420. In the implementation of fig. 1, a transmission manner of combining a gear transmission with a lead screw is adopted, and the specific structure refers to the description of the following embodiments.

Referring to fig. 2, the steering system 10 further includes an Electronic Control Unit (ECU) 500. The main shaft 200 is further sleeved with a steering angle sensor 510 and a torque sensor 520 between the steering wheel 100 and the abutting portion 210. The steering angle sensor 510 is used to sense the rotation angle of the main shaft 200, and the torque sensor 520 is used to sense the rotation torque of the main shaft 200. The steering angle sensor 510 and the torque sensor 520 are respectively connected to the electronic control unit 500, the steering angle sensor 510 transmits the sensed rotation angle of the main shaft 200 to the electronic control unit 500, and the torque sensor 520 transmits the sensed rotation torque of the main shaft 200 to the electronic control unit 500, so that the electronic control unit 500 senses the steering operation of the steering wheel 100 by the driver through the steering angle sensor 510 and the torque sensor 520. Compared with the existing mechanical steering structure, the electronic control unit 500 has the characteristics of small space, high steering controllability and the like, and can further improve the driving experience of the automobile steering system 10.

The electronic control unit 500 is a main element that realizes a car linear steering System (SBW). Unlike the conventional steering system in which the steering wheel is mechanically fixed to the steering actuator, the driver input interface (steering wheel 100) and the actuator (steering wheel) of the linear steering system are connected by an electronic signal of the electronic control unit 500. The electronic control unit 500 senses the steering operation of the driver through the steering angle sensor 510 and the torque sensor 520, and converts the steering operation into the steering action of the vehicle wheels. On the actuator side, the electronic control unit 500 may be connected to the steering motor 560, the mechanical steering mechanism 570 (e.g., a rack and pinion), the angular displacement sensor 580, and the like in sequence to control the steered wheels. In an embodiment, the electronic control unit 500 may further be connected to a vehicle speed sensor 550, and the vehicle speed sensor 550 is used for monitoring the driving speed of the vehicle in real time. In an embodiment, the electronic control unit 500 may further be connected to a yaw rate sensor (not shown), an acceleration sensor (not shown), and the like, so as to improve the steering stability of the vehicle.

In one embodiment, as shown in fig. 2, the steering system 10 further includes a speed reducer 530 and a torque feedback motor 540. The speed reducer 530 is connected to the steering device 300 and the torque feedback motor 540, respectively, and the torque feedback motor 540 is connected to the electronic control unit 500. The electronic control unit 500 controls the feedback torque provided by the torque feedback motor 540 according to input information such as a turning angle and a turning moment of the steering wheel 100 and outputs the feedback torque to the speed reduction part 530. The speed reducer 530 transmits the feedback torque to the steering device 300, and through the slip connection relationship between the steering device 300 and the main shaft 200, the main shaft 200 can feed back the feedback torque to the driver through the steering wheel 100. Therefore, the electronic control unit 500 can simulate the torque feedback of the traditional steering system to the driver, and ensure that the driver can sense the steering action of the automobile by the feedback torque in the process of controlling the automobile to steer.

Referring to fig. 3, fig. 3 is a schematic view of the steering system 10 of the vehicle when the telescoping device 400 reaches the maximum stroke in the direction of the axis 201 in the structure of fig. 1. The steering device 300 is provided with a key slot 310 extending along the axis 201 of the spindle 200, and the spindle 200 and the steering device 300 are connected in a sliding manner through a flat key 320 arranged in the key slot 310. That is, the flat key 320 may be protruded from the spindle 200, or may be fixedly connected to the spindle 200 as a separate component from the spindle 200, so that the spindle 200 is fixed in position relative to the steering apparatus 300 in the circumferential direction thereof, and the spindle 200 is relatively slidable with respect to the steering apparatus 300 in the direction along the axis 201 by the sliding motion of the flat key 320 in the key groove 310.

In one embodiment, the sliding portion 430 of the retractable device 400 is sleeved outside the steering device 300. When the sliding portion 430 rotates around the axis 201, in order to prevent the rotation of the sliding portion 430 from driving the steering device 300 to rotate and causing unnecessary steering operation, a connecting bearing 330 is further disposed between the steering device 300 and the telescopic device 400. The connecting bearing 330 allows the sliding part 430 to rotate around the steering device 300, i.e. the connecting bearing 330 enables a sliding connection between the main shaft 200 and the telescopic device 400.

As can be seen in the embodiments of fig. 1 and 3, the sliding part 430 is connected to the transmission part 420 via a threaded spindle. The sliding portion 430 includes a screw cylinder 431 sleeved between the body of the sliding portion 430 and the steering device 300, the body of the sliding portion 430 is rotatably connected to the screw cylinder 431 through a screw nut 432, and when the rotating portion 420 receives the rotation output of the telescopic motor 410, the rotation of the telescopic motor 410 is transmitted to the rotation of the screw cylinder 431. The screw cylinder 431 is rotationally matched with the screw nut 432 to drive the screw nut 432 to move along the axis 201 direction, and the screw nut 432 drives the body of the sliding part 430 to move so as to realize that the sliding part 430 moves along the axis 201 direction of the main shaft 200.

Between the transmission part 420 and the telescopic motor 410, the transmission part 420 and the telescopic motor 410 are driven by gears. The telescopic motor 410 rotates the driving gear 421 of the transmission part 420, so that the driven gear 422 of the transmission part 420 rotates, and the driven gear 422 drives the lead screw cylinder 431 to rotate by meshing with the lead screw cylinder 431. In order to adjust the transmission ratio between the driving gear 421 and the driven gear 422 and to reduce the volume of the transmission part 420, the transmission part 420 is further provided with at least one idle gear 423 between the driving gear 421 and the driven gear 422. The idle gear 423 is connected to the vehicle body like the extension motor 410, and the idle gear 423 is used for transmitting the rotation of the driving gear 421 to the driven gear 422, thereby adjusting the transmission ratio between the extension motor 410 and the transmission part 420, and reducing the volume of the transmission part 420.

Referring to fig. 4, a steering wheel 100 includes a handle 110, a heating portion 120 is disposed in the handle 110, and the heating portion 120 is used for heating the handle 110, so as to raise the temperature of the handle 110 when the external temperature is cold, and further improve the driving experience. In the embodiment of fig. 4, the heating portions 120 are implemented by using resistance wires, and four heating portions 120 are provided, and the four heating portions 120 are uniformly distributed in the steering wheel 100 along the circumferential direction of the handle 110.

In one embodiment, steering wheel 100 further includes a steering zone 130 coupled between handle 110 and spindle 200. The manipulation area 130 is provided with a multimedia device 600 therein. The multimedia device 600 includes a video player 610 and an audio player 620. Therefore, the steering wheel 100 of the present application has the function of playing video and audio. In the case where the area of the car center is limited, the video player 610 and the audio player 620 are provided in the steering wheel 100, and the area of the car center can be released for arranging the remaining car components or manipulation keys. The steering wheel 100 of the present application also improves the driving experience through the video and audio playing function.

In one embodiment, the multimedia device 600 further comprises a video collector 630 and an audio collector 640. Video collector 630 may be configured to capture facial information of a user and determine parameters such as a user identity, a user physiological status, and the like according to the facial information of the user. After the user identity is collected, the height of the steering wheel 100 can be automatically adjusted according to the user identity by the video collector 630, so as to adapt to different driving habits or statures of different users. After the physiological state of the user is collected, the video collector 630 may determine whether the user is in a fatigue state through the facial expression of the user, and further remind the driver through the video player 610 and the audio player 620. On the other hand, the audio collector 640 may be configured to receive a voice instruction of a user, and implement functions such as voice control on the multimedia device 600.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. The utility model provides an automobile steering system, its characterized in that, including the steering wheel, with main shaft, the device and the telescoping device that turn to that the steering wheel is connected, turn to the device with the telescoping device overlaps in proper order and locates on the main shaft, the main shaft for the device that turns to is followed the axis direction of main shaft slides, the main shaft with the telescoping device rotates to be connected, the main shaft is fixedly connected with butt portion still, the telescoping device includes flexible motor, transmission portion and sliding part, the sliding part cover is located turn to the outside of device, and with butt portion connects, flexible motor passes through transmission portion control sliding part is followed the direction of axis removes, sliding part drives butt portion follows the direction of axis removes with the adjustment the height of steering wheel.

2. The automobile steering system according to claim 1, further comprising an electronic control unit, wherein a steering angle sensor and a torque sensor are further sleeved on the main shaft between the steering wheel and the abutting portion, the steering angle sensor and the torque sensor are respectively connected with the electronic control unit, and the electronic control unit senses the steering operation of the steering wheel through the steering angle sensor and the torque sensor.

3. The steering system for an automobile according to claim 2, further comprising a speed reduction portion and a torque feedback motor, the speed reduction portion being connected to the steering device and the torque feedback motor, the torque feedback motor being connected to the electronic control unit, the electronic control unit being configured to control a feedback torque provided by the torque feedback motor according to a steering operation of the steering wheel and output the feedback torque to the speed reduction portion.

4. The steering system for the automobile of claim 1, wherein the steering device comprises a key groove extending along the axial direction of the main shaft, and the main shaft and the steering device are slidably connected through a flat key disposed in the key groove.

5. The vehicle steering system according to claim 1, wherein a connection bearing is provided between the steering device and the telescopic device, and the connection bearing is used for realizing sliding connection between the main shaft and the telescopic device.

6. The automobile steering system according to claim 5, wherein the sliding portion includes a screw cylinder, the sliding portion is connected to the transmission portion through a screw via the screw cylinder, and the transmission portion drives the screw cylinder to rotate so as to move the sliding portion in the axial direction of the main shaft.

7. The steering system for a vehicle according to claim 1, wherein the transmission portion and the telescopic motor are in gear transmission, and the transmission portion further comprises an idler gear for adjusting a transmission ratio between the telescopic motor and the transmission portion.

8. The automobile steering system according to any one of claims 1 to 7, characterized in that the steering wheel includes a handle having a heating portion built therein for heating the handle.

9. The steering system of claim 8, wherein the steering wheel includes a manipulation section connected between the handle and the main shaft, the manipulation section having built therein multimedia devices including a video player and an audio player.

10. The vehicle steering system of claim 9, wherein the multimedia device further comprises a video collector and an audio collector.