阅读说明：本技术 一种汽车用转向管柱 (Steering column for automobile ) 是由 姜廷龙 高尚 常秀岩 相东 侯慧贤 徐飞扬 于 2019-10-30 设计创作，主要内容包括：发明涉及汽车技术领域,尤其涉及一种汽车用转向管柱,包括管柱机构、冗余电机机构、高度调节机构以及角度调节机构,所述冗余电机机构设置在所述管柱机构上,且与所述管柱机构的主轴通过皮带连接,所述高度调节机构设置在所述管柱机构上用于调节所述汽车用转向管柱的高度,所述角度调节机构设置在所述管柱机构上,用于调节所述汽车用转向管柱与汽车底盘之间的夹角。本发明能够解决现有技术中转向限位力矩不足和电机控制力矩精度低的问题,提高驾乘体验,是一项高安全等级的全冗余硬件方案,可以支持线控转向,模拟转向手力,并与自动驾驶相融合。(The invention relates to the technical field of automobiles, in particular to an automobile steering column, which comprises a column mechanism, a redundant motor mechanism, a height adjusting mechanism and an angle adjusting mechanism, wherein the redundant motor mechanism is arranged on the column mechanism and is connected with a main shaft of the column mechanism through a belt, the height adjusting mechanism is arranged on the column mechanism and is used for adjusting the height of the automobile steering column, and the angle adjusting mechanism is arranged on the column mechanism and is used for adjusting an included angle between the automobile steering column and an automobile chassis. The invention can solve the problems of insufficient steering limit torque and low motor control torque precision in the prior art, improves the driving experience, is a full-redundancy hardware scheme with high safety level, can support steer-by-wire, simulates steering hand power, and is integrated with automatic driving.)

1. A steering column for an automobile, comprising: tubular column mechanism (1), redundant motor mechanism, altitude mixture control mechanism (2) and angle adjustment mechanism (3), redundant motor mechanism sets up on tubular column mechanism (1), and with the main shaft of tubular column mechanism (1) passes through belt (9) and connects, altitude mixture control mechanism (2) set up be used for adjusting on tubular column mechanism (1) the height of steering column for the car, angle adjustment mechanism (3) set up on tubular column mechanism (1), be used for adjusting contained angle between steering column and the vehicle chassis for the car.

2. Steering column for motor vehicles according to claim 1, characterized in that the column mechanism (1) comprises a column tube and a main shaft, which is arranged in the column tube and which can rotate along its own axis.

3. The steering column for the automobile according to claim 2, wherein the main shaft comprises an upper section main shaft (11), a middle section main shaft (12) and a lower section main shaft (14), one end of the upper section main shaft (11) is connected with the middle section main shaft (12), the other end of the middle section main shaft (12) is connected with the lower section main shaft (14), a belt pulley (17) is fixedly arranged on the lower section main shaft (14), and the redundant motor mechanism is connected with the belt pulley (17) through the belt (9).

4. The steering column for an automobile according to claim 2, wherein the column tube comprises an upper column tube (15) and a lower column tube (16), the upper column tube (15) is connected to the lower column tube (16), and the height adjustment mechanism (2) is provided on the lower column tube (16) to adjust a distance between the upper column tube (15) and the lower column tube (16) and thereby adjust the height of the steering column for an automobile.

5. The steering column for motor vehicles according to claim 4, characterized in that the redundant motor mechanism comprises a redundant motor assembly (5) and a redundant controller assembly (4), the redundant controller assembly (4) is connected with the redundant motor assembly (5), the redundant motor assembly (5) is disposed on the lower column tube (16) and is connected with the belt pulley (17) through the belt (9).

6. Steering column for motor vehicles according to claim 5, characterized in that the redundant motor assembly (5) comprises a first motor and a second motor, the redundant controller assembly (4) comprises a first controller and a second controller, the first motor is connected with the first controller, the second motor is connected with the second controller, the first motor and the second motor are both connected with the belt pulley (17) through the belt (9).

7. The steering column for automobile according to claim 4, characterized in that the height adjusting mechanism (2) comprises a height adjusting motor (21), a first output shaft, and a height adjusting nut (22), the height adjusting motor (21) being provided on the lower column tube (16), the first output shaft being connected to the height adjusting motor (21), the height adjusting nut (22) being provided on the upper column tube (15), the height adjusting nut (22) being screwed with the first output shaft.

8. The steering column for motor vehicles according to claim 7, characterized in that the first output shaft is sleeved with a first limit sleeve (23) for limiting the height adjustment.

9. The steering column for the automobile according to claim 4, wherein the angle adjusting mechanism (3) comprises an angle adjusting motor (31), a second output shaft (32), an angle adjusting nut (33), a linkage bracket (34) and a column fixing frame (35), the angle adjusting motor (31) is arranged on the lower column tube (16), the second output shaft (32) is connected with the angle adjusting motor (31), the angle adjusting nut (33) is connected with the linkage bracket (34), the angle adjusting nut (33) is in threaded connection with the second output shaft (32), one end of the linkage bracket (34) is connected with the lower column tube (16), the other end of the linkage bracket is connected with the column fixing frame (35), the other end of the column fixing frame (35) is connected with the reducer housing (6), and the linkage bracket (34) can drive the steering column for the automobile under the driving of the angle adjusting motor (31) The pipe column rotates relative to the pipe column fixing frame (35).

10. The steering column for the automobile according to claim 9, characterized in that one end of the second output shaft (32) close to the angle adjustment motor (31) is sleeved with a second limit sleeve (36) for limiting a lower limit position of the angle adjustment, and one end of the second output shaft (32) away from the angle adjustment motor (31) is clamped with a limit retainer ring (37) for limiting an upper limit position of the angle adjustment.

Technical Field

The invention relates to the technical field of automobiles, in particular to a steering column for an automobile.

Background

In recent years, with the development of the automobile industry, automatic automobile driving has become an industry development hotspot, and even some enterprises have launched automatic driving automobile models. In order to improve the experience of automatic driving, the requirement of the automatic driving on the intellectualization of a chassis is higher and higher, after a steering system is subjected to the technical scheme of hydraulic steering and electric power steering, a steer-by-wire system is widely concerned due to the characteristics of easy arrangement, high integration degree with the automatic driving technology, intensive design of functions and structures of a pipe column, good passive safety and the like of the steering system because the steering pipe column is disconnected with a steering device, and therefore, the steering pipe column for the automobile is required to be developed to cope with the new technology.

Disclosure of Invention

The invention aims to provide a steering column for an automobile, which can solve the problems of insufficient steering limit torque and low motor control torque precision in the prior art and improve driving experience.

In order to achieve the purpose, the invention adopts the following technical scheme:

a steering column for an automobile, comprising: the automobile steering column comprises a column mechanism, a redundant motor mechanism, a height adjusting mechanism and an angle adjusting mechanism, wherein the redundant motor mechanism is arranged on the column mechanism and is connected with a main shaft of the column mechanism through a belt, the height adjusting mechanism is arranged on the column mechanism and is used for adjusting the height of the automobile steering column, and the angle adjusting mechanism is arranged on the column mechanism and is used for adjusting an included angle between the automobile steering column and an automobile chassis.

Optionally, the string mechanism comprises a string tube and a main shaft, the main shaft is arranged in the string tube, and the main shaft can rotate along the axis of the main shaft.

Optionally, the main shaft includes an upper main shaft, a middle main shaft and a lower main shaft, one end of the upper main shaft is connected to the middle main shaft, the other end of the middle main shaft is connected to the lower main shaft, a belt pulley is fixedly arranged on the lower main shaft, and the redundant motor mechanism is connected to the belt pulley through the belt.

Optionally, the column tube includes an upper section column tube and a lower section column tube, the upper section column tube is connected to the lower section column tube, and the height adjusting mechanism is disposed on the lower section column tube and can adjust a distance between the upper section column tube and the lower section column tube, so as to adjust a height of the steering column for the automobile.

Optionally, the redundant motor mechanism includes redundant motor element and redundant controller subassembly, the redundant controller subassembly with the redundant motor element is connected, the redundant motor element sets up on the lower section column casing, and with the belt pulley passes through the belt is connected.

Optionally, the redundant motor assembly includes a first motor and a second motor, the redundant controller assembly includes a first controller and a second controller, the first motor is connected with the first controller, the second motor is connected with the second controller, and the first motor and the second motor are both connected with the belt pulley through the belt.

Optionally, the height adjusting mechanism includes a height adjusting motor, a first output shaft, and a height adjusting nut, the height adjusting motor is disposed on the lower-section column pipe, the first output shaft is connected to the height adjusting motor, the height adjusting nut is disposed on the upper-section column pipe, and the height adjusting nut is screwed to the first output shaft.

Optionally, a first limiting sleeve is sleeved on the first output shaft and used for limiting the adjusting height.

Optionally, the angle adjusting mechanism includes angle adjusting motor, second output shaft, angle adjusting nut, linkage support and tubular column mount, the angle adjusting motor sets up on the hypomere tubular column, the second output shaft with the angle adjusting motor links to each other, the angle adjusting nut with the linkage support links to each other, the angle adjusting nut with the second output shaft spiro union, the one end of linkage support with the hypomere tubular column links to each other, and the other end with the tubular column mount links to each other, the other end and the speed reducer casing of tubular column mount are connected, the linkage support can drive under the drive of angle adjusting motor the steering column for the car is relative the tubular column mount rotates.

Optionally, one end of the second output shaft, which is close to the angle adjustment motor, is sleeved with a second limiting sleeve for limiting the lower limit position of the angle adjustment, and one end of the second output shaft, which deviates from the angle adjustment motor, is clamped with a limiting retainer ring for limiting the upper limit position of the angle adjustment.

The invention has the beneficial effects that:

according to the steering column for the automobile, the redundant motor mechanism is connected with the main shaft of the column mechanism through the belt, so that the effects of reducing speed and increasing distance are achieved, the condition that the motor locked-rotor torque at the corner limiting position meets the requirement is guaranteed, and meanwhile compared with worm and gear transmission, the belt transmission is adopted to improve the motor control torque. Adjust the height of steering column for the car through setting up high adjustment mechanism to and set up angle adjustment mechanism and adjust the contained angle between steering column and the vehicle chassis for the car can be adjusted according to actual need with steering column's height and contained angle, improve and drive and experience, be the full redundant hardware scheme of a high security level, can support the drive-by-wire to turn to, the simulation is turned to hand power, and fuses mutually with autopilot.

Drawings

FIG. 1 is an exploded view of a steering column for an automobile according to the present invention;

FIG. 2 is a schematic view of a column mechanism in a steering column for an automobile of the present invention;

FIG. 3 is a schematic view of a height adjustment mechanism in a steering column for an automobile of the present invention;

fig. 4 is a schematic view of an angle adjusting mechanism in a steering column for an automobile of the present invention.

In the figure:

1-a pipe column mechanism; 11-upper section main shaft; 12-a middle section main shaft; 13-torsion bar; 14-lower main shaft; 15-upper section column tube; 16-lower section column tube; 17-a belt pulley;

2-a height adjustment mechanism; 21-a height adjustment motor; 22-height adjusting nut; 23-a first stop collar;

3-an angle adjustment mechanism; 31-an angle adjustment motor; 32-a second output shaft; 33-angle adjusting nuts; 34-a linkage bracket; 35-a tubular column fixing frame; 36-a second stop collar; 37-a limit retainer ring; 38-a sensor;

4-redundant controller components;

5-redundant motor components;

6-speed reducer housing;

7-a first sensor harness;

8-a second sensor harness;

9-a belt.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 4, the present invention provides a steering column for an automobile, comprising: tubular column mechanism 1, redundant motor mechanism, height adjustment mechanism 2 and angle adjustment mechanism 3, redundant motor mechanism sets up on tubular column mechanism 1, and passes through belt 9 with the main shaft of tubular column mechanism 1 and be connected, height adjustment mechanism 2 sets up the height that is used for adjusting steering column for car on tubular column mechanism 1, angle adjustment mechanism 3 sets up on tubular column mechanism 1 for adjust the contained angle between steering column and the vehicle chassis for the car.

Through adopting belt 9 driven mode, adopt belt 9 to be connected redundant motor mechanism and tubular column mechanism 1's main shaft, reached the effect of speed reduction increase distance to guarantee to meet the demands at corner limit position department motor stall moment. Meanwhile, compared with the transmission with a fixed transmission ratio of a worm gear and a worm, the belt 9 is adopted for transmission to improve the control torque of the motor; adjust the height of steering column for the car through setting up high adjustment mechanism 2 to and set up angle adjustment mechanism 3 and adjust the contained angle between steering column and the vehicle chassis for the height and the contained angle of steering column for the car can be adjusted according to actual need, improve and drive and take experience.

Further, the column mechanism 1 includes a column tube and a main shaft, the main shaft is provided in the column tube, and the main shaft can rotate along its own axis. Specifically, the main shaft comprises an upper section main shaft 11, a middle section main shaft 12 and a lower section main shaft 14, one end of the upper section main shaft 11 is connected with the middle section main shaft 12, the other end of the middle section main shaft 12 is connected with the lower section main shaft 14, a belt pulley 17 is fixedly arranged on the lower section main shaft 14, and the redundant motor mechanism is connected with the belt pulley 17 through a belt 9. In the embodiment, the upper section spindle 11 is a hollow tube, and is connected with the solid middle section spindle 12 by a nylon injection spline, wherein the crushing force between the upper section spindle 11 and the middle section spindle 12 needs to be controlled within a set range; the middle section main shaft 12 and the lower section main shaft 14 are connected through a torsion bar 13, a certain deformation gap of the torsion bar 13 is ensured between the middle section main shaft 12 and the lower section main shaft 14, and after the middle section main shaft 12 and the lower section main shaft 14 deform to a certain angle, the middle section main shaft 12 and the lower section main shaft 14 can be rigidly limited and transmit large rotation torque; and bearings are arranged at one end of the upper-section main shaft 11, which is far away from the middle-section main shaft 12, and one end of the lower-section main shaft 14, which is far away from the middle-section main shaft 12, and the outer rings of the bearings are matched with the column tubes, so that the main shaft rotates more smoothly.

Specifically, the column includes an upper column 15 and a lower column 16, the upper column 15 is connected to the lower column 16, and the height adjustment mechanism 2 is provided on the lower column 16 to adjust the distance between the upper column 15 and the lower column 16, thereby adjusting the height of the steering column for the vehicle.

Specifically, in the present embodiment, the height adjusting mechanism 2 includes a height adjusting motor 21, a first output shaft, and a height adjusting nut 22, the height adjusting motor 21 is provided on the lower-stage column tube 16, the first output shaft is connected to the height adjusting motor 21, the height adjusting nut 22 is provided on the upper-stage column tube 15, and the height adjusting nut 22 is screwed with the first output shaft. Thereby drive first output shaft through altitude mixture control motor 21 and drive altitude mixture control nut 22 and remove for upper segment pillar 15 removes relative lower segment pillar 16, changes the height of steering column for the car, makes with the height-adjustable of the steering wheel of being connected of steering column for the car, improves and drives and take experience. In order to limit the height of adjustment, a first limit sleeve 23 is optionally fitted over the first output shaft.

Further, the angle adjusting mechanism 3 includes an angle adjusting motor 31, a second output shaft 32, an angle adjusting nut 33, a linkage support 34 and a column fixing frame 35, the angle adjusting motor 31 is disposed on the lower column tube 16, the second output shaft 32 is connected with the angle adjusting motor 31, the angle adjusting nut 33 is connected with the linkage support 34, the angle adjusting nut 33 is in threaded connection with the second output shaft 32, one end of the linkage support 34 is connected with the lower column tube 16, the other end of the linkage support is connected with the column fixing frame 35, the other end of the column fixing frame 35 is connected with the speed reducer housing 6, and the linkage support 34 can drive the automobile steering column to rotate relative to the column fixing frame 35 under the driving of the angle adjusting motor 31. Specifically, the angle adjustment motor 31 drives the second output shaft 32 to rotate, so as to drive the angle adjustment nut 33 to move, the angle adjustment nut 33 drives the linkage bracket 34 to rotate relative to the column fixing frame 35, and simultaneously the linkage bracket 34 drives the steering column for the automobile to rotate relative to the column fixing frame 35, so as to adjust the angle.

In order to limit the range of the angle adjustment, optionally, one end of the second output shaft 32 close to the angle adjustment motor 31 is sleeved with a second limiting sleeve 36 for limiting the lower limit position of the angle adjustment, and one end of the second output shaft 32 away from the angle adjustment motor 31 is clamped with a limiting retainer ring 37 for limiting the upper limit position of the angle adjustment. The range of the rotation angle is adjusted by limiting the stroke of the angle adjusting nut 33.

Further, redundant motor mechanism includes redundant motor element 5 and redundant controller subassembly 4, and redundant controller subassembly 4 is connected with redundant motor element 5, and redundant motor element 5 sets up on lower section column pipe 16, and passes through belt 9 with belt pulley 17 and be connected. Specifically, redundant motor element 5 includes first motor and second motor, and redundant controller component 4 includes first controller and second controller, and first motor is connected with first controller, and the second motor is connected with the second controller, and first motor and second motor all pass through belt 9 with belt pulley 17 and are connected.

In the embodiment, a first controller and a second controller work independently and detect and verify mutually, the first controller is connected with a finished automobile power supply, finished automobile communication, ignition and a first sensor wire harness 7, and the second controller is connected with a finished automobile power supply, finished automobile communication, ignition and a second sensor wire harness 8; the first sensor wire harness 7 is connected with a sensor 38 arranged at a position of a fit clearance between the middle section main shaft 12 and the lower section main shaft 14, and receives a first path of torque and corner signals sent by the sensor 38, the second sensor wire harness 8 is connected with the sensor 38 and receives a second path of torque and corner signals sent by the sensor 38, and the first path of torque and corner signals and the second path of torque and corner signals are sent out after being checked inside the sensor 38, so that the accuracy of the signals is guaranteed. Two controllers are adopted to back up each other, and the stability of control is improved.

When a driver rotates a steering wheel, the first controller calculates according to a received first path of torque signal of the sensor 38, a first path of corner signal and a rotating speed signal of the sensor 38, a steering gear end corner signal, a steering gear state signal, a steering gear current signal, a whole vehicle speed signal and a driving mode signal of the whole vehicle communication, and outputs current to control the first motor to output torque; the second controller calculates according to the received second torque signal of the sensor 38, the second corner signal of the sensor 38, the rotating speed signal, the steering gear end corner signal of the whole vehicle communication, the steering gear state signal, the steering gear current signal, the whole vehicle speed signal and the driving mode signal, outputs current to control the second motor to output torque, and the first motor and the second motor output reverse torque in the hand force direction together and transmit the reverse torque to the intelligent pipe column main shaft to simulate hand force.

Furthermore, when a driver rotates the steering wheel to a position near a set corner limit position, the first controller and the second controller can control the motor to gradually increase the simulated steering hand torque along with the gradual increase of the corner according to the received internal sensor signal and the whole vehicle communication signal, and the purpose of limiting the tail end of the corner is achieved by controlling the locked-rotor torque.

Further, when the driver rotates the steering wheel, a torque or turning angle request can be sent to the steering gear according to the received internal sensor signal and the whole vehicle communication signal, and the steering gear is controlled to drive wheels to steer according to the intention of the driver.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.