Steering-by-wire column, steering-by-wire system and vehicle

Abstract

The utility model relates to a steer-by-wire tubular column, a steer-by-wire system and a vehicle, the steer-by-wire tubular column comprises a steering tubular column, a feedback actuator, a controller and an angle limiting mechanism, the steering tubular column comprises a tubular column shell and a tubular column rotating shaft rotationally arranged in the tubular column shell, and the first end of the tubular column rotating shaft is used for being connected with a steering wheel; an output shaft of the feedback actuator is in transmission connection with the tubular column rotating shaft, and the tubular column shell is installed on the end face of the feedback actuator. The controller is respectively connected with the feedback actuator and a steering gear of the vehicle; the angle limiting mechanism comprises a guider arranged in the tubular column shell, a cover body and a limiting pin, the cover body and the limiting pin are arranged on the tubular column shell, the guider is rotatably connected between the output shaft and the second end of the tubular column rotating shaft, one end of the limiting pin is arranged in a guide rail of the guider, and the other end of the limiting pin is movably installed on the cover body; the feedback actuator or the tubular column rotating shaft drives the guider to rotate, and the limiting pin moves between the first limiting position and the second limiting position so as to limit the rotating angle of the steering wheel.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle steering systems, and in particular to a steering-by-wire column, a steering-by-wire system, and a vehicle. Background Art

[0002] In a steer-by-wire system, the steering column in the cab and the steering gear in the chassis interact via a communication link, rather than an intermediate shaft. Without the constraints of a traditional mechanical connection, the steering column can rotate infinitely without a rotation angle limit. This can lead to dangerous situations if road feel information is not transmitted in a timely manner. Utility Model Content

[0003] To overcome the problems existing in the related art, the present disclosure provides a steer-by-wire column, a steer-by-wire system and a vehicle.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a steering-by-wire column, comprising:

[0005] A steering column, comprising a column housing and a column shaft rotatably disposed in the column housing, wherein a first end of the column shaft is used to connect to a steering wheel;

[0006] A feedback actuator, wherein the output shaft of the feedback actuator is drivingly connected to the pipe column rotating shaft, and the pipe column housing is mounted on the end surface of the feedback actuator;

[0007] a controller connected to the feedback actuator and a steering gear of the vehicle, respectively; and

[0008] The angle limiting mechanism includes a guide arranged in the column housing, a cover body arranged on the column housing, and a limit pin. The guide is rotatably connected between the output shaft and the second end of the column rotating shaft. One end of the limit pin is arranged in the guide track of the guide, and the other end is movably mounted on the cover body. The feedback actuator or the column rotating shaft drives the guide to rotate, and the limit pin moves between a first limit position and a second limit position to limit the rotation angle of the steering wheel.

[0009] Optionally, the guide track is a spiral track provided on the outer peripheral wall of the guide, the rotation direction of the spiral track is arranged along the axial direction of the pipe column shaft, and the two ends of the spiral track are the first extreme position and the second extreme position respectively.

[0010] Optionally, a guide groove is provided on the cover body, and a stop slider is provided at one end of the limit pin, and the stop slider is slidably provided in the guide groove, wherein the extension direction of the guide groove is arranged parallel to the rotation direction of the spiral track.

[0011] Optionally, the column shaft includes a first transmission shaft and a second transmission shaft connected to each other, and the steering column further includes a column sleeve connected to the column housing.

[0012] The tubular column sleeve is sleeved on the outer side of the first transmission shaft through a first bearing, so that the first transmission shaft can rotate relative to the tubular column sleeve;

[0013] The tubular column sleeve is sleeved on the outer side of the second transmission shaft through a second bearing, so that the second transmission shaft can rotate relative to the tubular column sleeve.

[0014] Optionally, a stop portion is provided on the outer wall of the first transmission shaft, and the first bearing is fixed between the matching end of the column sleeve and the stop portion; and / or the second bearing is sleeved on the outer peripheral wall of the second transmission shaft and fixed by a retaining ring.

[0015] Optionally, the end of the first transmission shaft extends out of the tubular casing to form the first end, the end of the second transmission shaft away from the first transmission shaft is formed as the second end, the connecting end of the first transmission shaft away from the first end has an expansion section, and the connecting end of the second transmission shaft away from the second end is interference pressed into the expansion section.

[0016] Optionally, the steering column comprises a torsion bar having a first connecting end and a second connecting end opposite to each other,

[0017] The end surface of the second transmission shaft facing the guide is provided with a first insertion hole extending along the axial direction thereof, and the first connecting end of the torsion bar is inserted into the first insertion hole so that the torsion bar can rotate together with the second transmission shaft;

[0018] A second insertion hole extending along the axial direction of the guide is provided on the end surface of the guide facing the second transmission shaft, and the second connecting end of the torsion bar is inserted into the second insertion hole so that the torsion bar can rotate together with the guide.

[0019] Optionally, a third bearing is provided between the second transmission shaft and the guide, and the second transmission shaft and the guide are relatively rotatable.

[0020] Optionally, a fourth bearing is provided between the guide and the column housing, and the guide and the column housing are relatively rotatable.

[0021] Optionally, the wire-controlled steering column includes a sensor sleeved on the second transmission shaft, and the sensor is connected to the controller.

[0022] Optionally, the sensor, the angle limiting mechanism, the feedback actuator and the controller are coaxially arranged.

[0023] Optionally, the wire-controlled steering column includes a connecting harness, the sensor and the controller are respectively provided with sockets, and the connectors at both ends of the connecting harness are respectively plugged into and matched with the sockets.

[0024] Optionally, a first coupling is fixed to the end of the output shaft, a second coupling is fixed to the end face of the guide facing the output shaft, the first coupling and the second coupling are connected and a shock-absorbing block is filled between them.

[0025] Optionally, the tubular column housing has a first end surface for connecting with the tubular column sleeve and a second end surface for connecting with the feedback actuator, wherein,

[0026] A plurality of first fastening holes are provided on the first end face, a plurality of second fastening holes are provided on the end face of the column sleeve, and the column sleeve and the column housing are connected by first fasteners passing through the first fastening holes and the second fastening holes; and / or,

[0027] A plurality of third fastening holes are provided on the second end surface, a plurality of fourth fastening holes are provided on the end surface of the feedback actuator, and the column housing and the feedback actuator are connected via a second fastener passing through the third fastening holes and the fourth fastening holes; and / or,

[0028] The column housing has a plurality of connecting arms which are arranged on the outer peripheral wall and spaced apart along the circumferential direction. The connecting arms are provided with mounting holes for fixing the steering column.

[0029] According to a second aspect of an embodiment of the present disclosure, there is provided a steer-by-wire system, comprising:

[0030] steering wheel;

[0031] The above-mentioned wire-controlled steering column, wherein the steering column is connected to the steering wheel; and

[0032] The steering gear is used to drive the steering wheel to steer, and the steering gear is communicatively connected to the wire-controlled steering column.

[0033] According to a third aspect of an embodiment of the present disclosure, there is provided a vehicle comprising the above-mentioned steer-by-wire system.

[0034] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: in the wire-controlled steering column provided by the present disclosure, the guide is connected between the output shaft of the feedback actuator and the column shaft. When the column shaft or the output shaft rotates, the guide will rotate accordingly. Taking the guide rotating along with the column shaft as an example, the limit pin will move relative to the cover body under the push of the guide rail, and the rotation of the guide is converted into a linear motion of the limit pin. When the guide rotates clockwise, the limit pin moves to the end of the guide rail, or when the guide rotates counterclockwise and the limit pin moves to the other end of the guide rail, it can no longer rotate. The column shaft stops rotating, and the steering wheel is subsequently restricted, realizing mechanical limiting, thereby restricting the driver from continuing to turn the steering wheel. The design of the guide rail can achieve the design of the steering wheel rotation angle range.

[0035] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0037] Figure 1 is a schematic diagram of a steer-by-wire system according to an exemplary embodiment.

[0038] Figure 2 and Figure 3 1 is a perspective view of a steer-by-wire column from different viewing angles according to an exemplary embodiment.

[0039] Figure 4 FIG. 4 is an exploded view of a steer-by-wire column according to an exemplary embodiment.

[0040] Figure 5 The figure is a front view of a steer-by-wire column according to an exemplary embodiment.

[0041] Figure 6 yes Figure 5 Cross-sectional view of section AA.

[0042] Description of Reference Numerals

[0043] 100-steer-by-wire column; 1-steering column; 10-column housing; 11-column shaft; 111-first transmission shaft; 1110-stopper; 1111-expansion section; 112-second transmission shaft; 1120-first jack; 12-column sleeve; 121-matching end; 122-second fastening hole; 123-first fastener; 13-circlip; 14-torsion bar; 141-first connecting end; 142-second connecting end; 101-first end; 102-second end; 103-first fastening hole; 104-third fastening hole; 105-connecting arm; 106- Mounting hole; 107-second fastener; 2-sensor; 21-first bearing; 22-second bearing; 23-third bearing; 24-fourth bearing; 3-feedback actuator; 31-output shaft; 32-fourth fastening hole; 4-controller; 40-socket; 5-angle limit mechanism; 51-guide; 510-second socket; 511-guide rail; 52-cover; 53-limit pin; 531-stop slider; 6-connecting harness; 61-connector; 91-first coupling; 92-second coupling; 93-shock absorber; 200-steering wheel; 300-steering gear. DETAILED DESCRIPTION

[0044] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0045] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0046] In the present disclosure, unless otherwise specified, directional terms such as "axial" and "circumferential" generally refer to the direction relative to the rotation axis of the steering column provided by the present disclosure when the wire-controlled steering column is normally installed, and "inside" and "outside" can refer to the inside and outside of the corresponding component contour or the inside or outside of the environment in which it is located, depending on the specific context. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have sequentiality or importance.

[0047] like Figure 1As shown, the steer-by-wire system includes a steer-by-wire column 100 located in the cab and a steering gear 300 located on the chassis. The steer-by-wire column 100 is used to connect to the steering wheel 200. The steer-by-wire column 100 and the steering gear 300 are not connected by a mechanical or hydraulic structure, but are connected by communication (indicated by dotted lines in the figure).

[0048] like Figure 2 and Figure 3 As shown, the steer-by-wire column 100 includes a steering column 1, a feedback actuator 3, and a controller 4. In a steer-by-wire system, the driver's steering commands are received through the rotation of the steering wheel 200. These commands are converted into rotational angles and / or torque information of the steering column 1 and transmitted to the controller 4. The electrical signals generated by the controller 4 are output to the steering gear 300, thereby driving the wheels to produce the corresponding steering angles. Furthermore, to create a realistic driving experience, parameters such as vehicle speed, steering angle, and torque under actual driving conditions are fed back to the feedback actuator 3 via the controller 4. The feedback actuator 3 couples these parameters to the steering wheel 200 via the steering column 1, allowing the driver to obtain a sense of the road and providing a realistic driving experience similar to that of a traditional mechanical connection.

[0049] In the wire control steering system, since a communication connection is used instead of mechanical transmission, the steering column 1 can rotate infinitely. The steering column 1 does not have a rotation angle limit function. If the road sense information is not transmitted in time, it may cause danger.

[0050] In view of this, if Figures 2 to 6 As shown, the present disclosure provides a wire-controlled steering column, which includes a steering column 100, a feedback actuator 3, a controller 4, and an angle limiting mechanism 5. The steering column 1 includes a column housing 10 and a column shaft 11 rotatably disposed within the column housing 10. The first end 101 of the column shaft 11 is configured to be connected to a steering wheel 200. The output shaft 31 of the feedback actuator 3 is in driving connection with the column shaft 11. The column housing 10 is mounted on an end surface of the feedback actuator 3. The controller 4 is connected to the feedback actuator 3 and the vehicle's steering gear 300, respectively. The angle limiting mechanism 5 includes a guide 51 provided in the column housing 10, a cover body 52 provided on the column housing 10, and a limit pin 53. The guide 51 is rotatably connected between the output shaft 31 and the second end 102 of the column shaft 11. One end of the limit pin 53 is provided in the guide track 511 of the guide 51, and the other end is movably mounted on the cover body 52. ​​The feedback actuator 3 or the column shaft 1 drives the guide 51 to rotate, and the limit pin 53 moves between the first limit position and the second limit position to limit the rotation angle of the steering wheel 200.

[0051] Here, it should be noted that the feedback actuator 3 can be a motor, and the first limit position and the second limit position correspond to the two ends of the guide rail 511 respectively. If the first limit position is when the guide 51 rotates clockwise, the limit pin 53 moves to the left end of the guide rail 511, then the second limit position is when the guide 51 rotates counterclockwise, the limit pin 53 moves to the right end of the guide rail 511. At the two limit positions, due to the stopping effect of the end of the guide rail 511 on the limit pin 53, it cannot continue to rotate.

[0052] In the steering-by-wire column 100 provided herein, the guide 51 is connected between the output shaft 31 of the feedback actuator 3 and the column shaft 11. When the column shaft 11 or the output shaft 31 rotates, the guide 51 rotates accordingly. For example, if the guide 51 rotates along with the column shaft 11, the limit pin 53 moves relative to the cover 52 under the push of the guide rail 511. The rotation of the guide 51 is converted into linear motion of the limit pin 53. When the guide 51 rotates clockwise and the limit pin 53 moves to the end of the guide rail 511, or when the guide 51 rotates counterclockwise and the limit pin 53 moves to the other end of the guide rail 511, it cannot rotate further, the column shaft 11 stops rotating, and the steering wheel 200 is restrained, achieving mechanical limiting, thereby preventing the driver from further turning the steering wheel 200. The angle limiting mechanism 5 can limit the rotation angle of the steering wheel 200. The design of the guide rail 511 can also achieve a design of the rotation angle range of the steering wheel 200.

[0053] like Figure 4 and Figure 6 As shown, the guide track 511 can be a spiral track provided on the outer circumference of the guide 51. The spiral track rotates along the axial direction of the column shaft 11, with the spiral track having a first limit position and a second limit position at each end. The first limit position and the second limit position are the limit positions of the clockwise and counterclockwise rotation of the guide 51, respectively. By designing the number of turns of the spiral track, different maximum steering wheel angle requirements can be met.

[0054] The cover 52 is provided with a guide groove (not shown in the figure). Figure 4 As shown, a stopper slide 531 is provided at one end of the limit pin 53. The stopper slide 531 is slidably disposed in the guide groove, wherein the extension direction of the guide groove is arranged parallel to the rotation direction of the spiral track, converting the rotation of the guide 51 into the linear motion of the limit pin 53. During the movement of the limit pin 53, no jamming occurs, thereby achieving the limit at two extreme positions. Of course, the guide track 511 and the guide groove are not limited to the shape arrangement shown in the embodiment of the figure. In other embodiments, the guide track 511 can also be an arc-shaped guide track extending axially, all of which fall within the scope of protection of the present disclosure.

[0055] The pipe column shaft 11 can be a shaft. Figure 6 As shown, the column shaft 11 includes a first drive shaft 111 and a second drive shaft 112 connected to each other. The steering column 1 also includes a column sleeve 12 connected to the column housing 10. The column sleeve 12 is mounted on the outside of the first drive shaft 111 via a first bearing 21, allowing the first drive shaft 111 to rotate relative to the column sleeve 12. The column sleeve 12 is mounted on the outside of the second drive shaft 112 via a second bearing 22, allowing the second drive shaft 112 to rotate relative to the column sleeve 12. The first drive shaft 111 is partially rotatably positioned within the column sleeve 12, while the second drive shaft 112 and the guide 51 are rotatably positioned within the column housing 10, enabling the column shaft 11 to rotate within the column sleeve 12 and the column housing 10. This allows the torque output by the feedback actuator 3 to be transmitted to the column shaft 11 and, in turn, to the steering wheel 200. The rotation of the steering wheel 200 can also be transmitted to the column shaft 11 , and the sensor 2 provided on the column shaft 11 can obtain the torque or speed information of the column shaft 11 , and then transmit it to the controller 4 and the steering gear 300 in sequence.

[0056] In order to fix the position of the column shaft 11 in the axial direction and prevent it from moving in the axial direction, in the present disclosure, the column sleeve 12 can be fixedly connected to the vehicle combination switch through the matching end 121, such as Figure 6 As shown, a stopper 1110 is provided on the outer wall of the first transmission shaft 111, and the first bearing 21 is fixed between the mating end 121 of the tubular sleeve 12 and the stopper 1110. Alternatively, the second bearing 22 is sleeved on the outer circumferential wall of the second transmission shaft 112 and secured by a retaining ring 13. In this way, the tubular shaft 11 can only rotate circumferentially and cannot move axially.

[0057] The first transmission shaft 111 and the second transmission shaft 112 can be connected in various ways. The end of the first transmission shaft 111 extends out of the column sleeve 12 to form the first end 101, and the first end 101 is connected to the steering wheel 200. The end of the second transmission shaft 112 away from the first transmission shaft 111 is formed as the second end 102, and the second end 102 is in transmission connection with the guide 51. The connection end of the first transmission shaft 111 away from the first end 101 has an expansion section 1111, and the connection end of the second transmission shaft 112 away from the second end 102 is interference-pressed into the expansion section 1111. The first transmission shaft 111 and the second transmission shaft 112 are connected by interference pressing to achieve synchronous rotation. In other exemplary embodiments, the two can also be connected by welding, coupling, pin connection, etc.

[0058] In order to realize the transmission connection between the column rotating shaft 11 and the guide 51, in the present disclosure, the steering column 1 includes a torsion bar 14, which has a first connecting end 141 and a second connecting end 142 relative to each other. The end surface of the second transmission shaft 112 facing the guide 51 is provided with a first socket 1120 extending along its own axial direction, and the first connecting end 141 of the torsion bar 14 is inserted into the first socket 1120 so that the torsion bar 14 can rotate together with the second transmission shaft 112; the end surface of the guide 51 facing the second transmission shaft 112 is provided with a second socket 510 extending along its own axial direction, and the second connecting end 142 of the torsion bar 14 is inserted into the second socket 510 so that the torsion bar 14 can rotate together with the guide 51. The first connecting end 141 and the second connecting end 142 of the torsion bar 14 can be designed with a spline structure. The first connecting end 141 and the first socket 1120, and the second connecting end 142 and the second socket 510 can be spline connections, which can not only transmit the torque of the output shaft 31 to the second transmission shaft 112 through the torsion bar 14, and then to the first transmission shaft 111 and the steering wheel 200; but also transmit the torque of the second transmission shaft 112 to the guide 51 through the torsion bar 14.

[0059] On the one hand, the guide 51 is connected to the output shaft 31 of the feedback actuator 3, and on the other hand, it is connected to the second transmission shaft 112 through the torsion bar 14. Torque can be output to the guide 51 from both ends of the guide 51. In the present disclosure, a third bearing 23 is provided between the second transmission shaft 112 and the guide 51, and the second transmission shaft 112 and the guide 51 can rotate relative to each other, ensuring smooth rotation at the coupling position of the second transmission shaft 112 and the guide 51.

[0060] A fourth bearing 24 is provided between the guide 51 and the column housing 10 , so that the guide 51 and the column housing 10 can rotate relative to each other, thereby ensuring smooth rotation of the guide 51 in the column housing 10 .

[0061] The wire-controlled steering column 100 includes a sensor 2 mounted on the second transmission shaft 112, and the sensor 2 is connected to the controller 4. The sensor 2 can be used to obtain information such as the rotation angle, rotation speed, and torque of the second transmission shaft 112. It can be a sensor used solely for detecting angles, a sensor used solely for detecting rotation speeds, a sensor used solely for detecting torques, or a sensor that includes an angle detection module, a rotation speed detection module, and a torque detection module. This is not limited in the present disclosure. In the present disclosure, the sensor 2 is disposed on the second transmission shaft 112 and within the column housing 10. The housing of the sensor 2 and the column housing 10 are designed to be integrated, and the plug-in interface of the sensor 2 can be directly disposed on the column housing 10. In other embodiments, the sensor 2 can also be disposed on the first transmission shaft 111.

[0062] In this disclosure, Figure 6As shown, the sensor 2, angle limiter 5, feedback actuator 3, and controller 4 are coaxially arranged. This is compared to the related art solution in which a worm gear reduction mechanism is provided between the steering column 1 and the feedback actuator 3 to transmit torque, and the worm gear is non-coaxially arranged with the output shaft 31 of the feedback actuator 3. In the wire-controlled steering column 100 provided in the present disclosure, the column shaft 11, the sensor 2 disposed on the column shaft 11, the feedback actuator 3, the controller 4, and the angle limiter 5 are coaxially arranged. This makes the wire-controlled steering column 100 more compact, smaller, and easier to deploy in compact spaces. For example, it is more suitable for use in vehicles with relatively compact layout spaces. Furthermore, in the present disclosure, the axial positions of the sensor 2, angle limiter 5, feedback actuator 3, and controller 4 are arranged sequentially, and can be adjusted and configured as needed.

[0063] like Figure 4 As shown, the steer-by-wire column 100 includes a wiring harness 6. A socket 40 is provided on each of the sensor 2 and the controller 4. Connectors 61 at both ends of the wiring harness 6 engage with the sockets 40. Sensor 2 is mounted on the second transmission shaft 112. Sensor 2's socket 40 is integrated into the column housing 10. The wiring harness 6 is connected to the sensor 2 and controller 4 via connectors 61 at both ends. In other embodiments, the sensor 2 and controller 4 may also be connected via communication, all of which fall within the scope of this disclosure.

[0064] To stably connect the guide 51 to the output shaft 31 of the feedback actuator 3, a first coupling 91 is fixed to the end of the output shaft 31. A second coupling 92 is fixed to the end surface of the guide 51 facing the output shaft 31. The first coupling 91 and the second coupling 92 are connected, with a damping block 93 placed between them. The first coupling 91 can be pressed into the guide 51 to form a fixed connection, and the second coupling 92 can be pressed into the output shaft 31 of the feedback actuator 3 to form a fixed connection. The damping block 93 is placed between the first coupling 91 and the second coupling 92, ensuring stable transmission of power from the output shaft 31 to the guide 51.

[0065] The present disclosure has made relevant designs on the structure of the column housing 10, such as Figure 4As shown, the tubular column housing 10 has a first end face for interfacing with the tubular column sleeve 12 and a second end face for interfacing with the feedback actuator 3. The guide 51 and the second transmission shaft 112 are rotatably mounted in a cavity between the first and second end faces of the tubular column housing 10. The first end face is provided with a plurality of first fastening holes 103, and the end face of the tubular column sleeve 12 is provided with a plurality of second fastening holes 122. The tubular column sleeve 12 and the tubular column housing 10 are connected by first fasteners 123 passing through the first and second fastening holes 103, 122. The number of first fastening holes 103, second fastening holes 122, and first fasteners 123 can each be three, to secure the tubular column sleeve 12 and the tubular column housing 10 together. The end of the tubular column sleeve 12 that interfaces with the second end face is provided with a flange, and the plurality of second fastening holes 122 are defined in the flange.

[0066] In the present disclosure, a plurality of third fastening holes 104 are provided on the second end face of the column housing 10, and a plurality of fourth fastening holes 32 are provided on the end face of the feedback actuator 3. The column housing 10 and the feedback actuator 3 are connected by a second fastener 107 passing through the third fastening hole 104 and the fourth fastening hole 32. The third fastening hole 104, the fourth fastening hole 32 and the second fastener 107 can be three respectively, which can stably fix the column housing 10 on the feedback actuator 3.

[0067] In addition, the column housing 10 has a plurality of connecting arms 105 disposed on the outer peripheral wall and spaced apart along the circumferential direction. The connecting arms 105 are provided with mounting holes 106 for securing the steering column 1. There can be two connecting arms 105 arranged relatively parallel to each other, so as to secure the column housing 10 to a suitable position in the cab.

[0068] According to a second aspect of the present disclosure, a steer-by-wire system is provided. The steer-by-wire system includes a steering wheel 200, the aforementioned steer-by-wire column 100, and a steering gear 300. The steering column 1 of the steer-by-wire column 100 is connected to the steering wheel 200, and the steering gear 300 is used to drive the steering wheel. The steering gear 300 is communicatively connected to the steer-by-wire column 100. A controller 4 is connected to the sensor 2, the steering gear 300, and the feedback actuator 3. The controller 4 is capable of outputting steering torque feedback to the steering wheel 200, allowing the driver to obtain a sense of the road. The controller 4 is also capable of transmitting the driver's steering commands to the steering gear 300, causing the steering wheel to generate a corresponding steering angle.

[0069] According to a third aspect of the present disclosure, a vehicle is provided, which includes the above-mentioned steer-by-wire system. The vehicle has all the beneficial effects of the above-mentioned steer-by-wire system, which will not be described in detail here.

[0070] In the foregoing detailed description, reference is made to the accompanying drawings, which illustrate, by way of illustration, specific aspects of the present disclosure in which it may be practiced. In this regard, terms indicating directions or expressing positional relationships, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., may be used with reference to the orientation of the figures being described. Since the components of the described devices may be positioned in a plurality of different orientations, the directional terms may be used for illustrative purposes rather than restrictive. It should be understood that other aspects may be utilized and structural or logical changes may be made without departing from the concepts of the present disclosure. Therefore, the following detailed description should not be taken in a limiting sense.

[0071] It should be understood that, unless otherwise specifically noted, the features of the various embodiments of the present disclosure described herein may be combined with each other. As used herein, the term "and / or" includes any one of the relevant listed items and any combination of any two or more thereof; similarly, "at least one of" includes any one of the relevant listed items and any combination of any two or more thereof.

[0072] It should be understood that, unless otherwise expressly specified or limited, the terms "join," "attach," "install," "connect," "connect," "fix," etc. used in the embodiments of the present disclosure should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected, electrically connected, or communicable with each other; they can be directly connected, or indirectly connected through an intermediate medium, and they can be internally connected between two elements or an interactive relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0073] Additionally, the term "over" as used in reference to a component, element, or material layer being formed "over" or located "over" a surface may be used herein to mean that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are disposed between the surface and the component, element, or material layer. However, the term "over" as used in reference to a component, element, or material layer being formed "over" or located "over" a surface may alternatively have a specific meaning: the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, e.g., in direct contact with the surface.

[0074] Although terms such as "first", "second" and "third" may be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, part, region, layer or section from another component, part, region, layer or section. Therefore, without departing from the teachings of each example, the first component, part, region, layer or section mentioned in the examples described herein may also be referred to as the second component, part, region, layer or section. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one such feature. In the description herein, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0075] It should be understood that spatially relative terms, such as "above," "upper," "below," and "lower," are used herein to describe the relationship of one element to another element shown in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being "above" or "upper" relative to another element would then be "below" or "lower" relative to the other element. Thus, the term "above" encompasses both above and below orientations, depending on the spatial orientation of the device. The device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0076] Furthermore, the word "exemplary" is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "exemplary" is not necessarily to be construed as advantageous over other aspects or designs. Rather, the use of the word exemplary is intended to present concepts in a concrete manner. As used herein, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or." That is, unless otherwise specified or clear from the context, "X applies to A or B" is intended to mean any of the natural inclusive permutations. That is, if X applies to A; X applies to B; or X applies to both A and B, then "X applies to A or B" satisfies any of the aforementioned instances. Furthermore, the articles "a" and "an," as used in this application and the appended claims, are generally understood to mean "one or more," unless otherwise specified or clear from the context to refer to the singular form.

[0077] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. With particular regard to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if not structurally equivalent to the disclosed structure. In addition, although particular features of the present disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations as may be desired and advantageous for any given or particular application. Furthermore, to the extent that the terms "include," "have," "have," "have," or variations thereof are used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term "comprising."

[0078] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

[0079] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A wire-controlled steering column, characterized in that: include: A steering column, comprising a column housing and a column shaft rotatably disposed in the column housing, wherein a first end of the column shaft is used to connect to a steering wheel; A feedback actuator, wherein the output shaft of the feedback actuator is drivingly connected to the pipe column rotating shaft, and the pipe column housing is mounted on the end surface of the feedback actuator; a controller connected to the feedback actuator and a steering gear of the vehicle, respectively; as well as The angle limiting mechanism includes a guide arranged in the column housing, a cover body arranged on the column housing, and a limit pin. The guide is rotatably connected between the output shaft and the second end of the column rotating shaft. One end of the limit pin is arranged in the guide track of the guide, and the other end is movably mounted on the cover body. The feedback actuator or the column rotating shaft drives the guide to rotate, and the limit pin moves between a first limit position and a second limit position to limit the rotation angle of the steering wheel.

2. The steer-by-wire column according to claim 1, wherein: The guide track is a spiral track provided on the outer peripheral wall of the guide, the rotation direction of the spiral track is arranged along the axial direction of the pipe column shaft, and the two ends of the spiral track are the first limit position and the second limit position respectively.

3. The steer-by-wire column according to claim 2, wherein: A guide groove is provided on the cover body, and a stop slider is provided at one end of the limit pin. The stop slider is slidably arranged in the guide groove, wherein the extension direction of the guide groove is arranged parallel to the rotation direction of the spiral track.

4. The steer-by-wire column according to claim 1, wherein: The column shaft includes a first transmission shaft and a second transmission shaft connected to each other, and the steering column also includes a column sleeve connected to the column housing. The tubular column sleeve is sleeved on the outer side of the first transmission shaft through a first bearing, so that the first transmission shaft can rotate relative to the tubular column sleeve; The tubular column sleeve is sleeved on the outer side of the second transmission shaft through a second bearing, so that the second transmission shaft can rotate relative to the tubular column sleeve.

5. The steer-by-wire column according to claim 4, wherein: A stop portion is provided on the outer wall of the first transmission shaft, and the first bearing is fixed between the matching end of the column sleeve and the stop portion; and / or the second bearing is sleeved on the outer peripheral wall of the second transmission shaft and fixed by a snap ring.

6. The steer-by-wire column according to claim 4, wherein: The end of the first transmission shaft extends out of the tubular casing to form the first end, the end of the second transmission shaft away from the first transmission shaft is formed as the second end, the connecting end of the first transmission shaft away from the first end has an expansion section, and the connecting end of the second transmission shaft away from the second end is interference pressed into the expansion section.

7. The steer-by-wire column according to claim 4, wherein: The steering column includes a torsion bar having a first connecting end and a second connecting end opposite to each other, The end surface of the second transmission shaft facing the guide is provided with a first insertion hole extending along the axial direction thereof, and the first connecting end of the torsion bar is inserted into the first insertion hole so that the torsion bar can rotate together with the second transmission shaft; A second insertion hole extending along the axial direction of the guide is provided on the end surface of the guide facing the second transmission shaft, and the second connecting end of the torsion bar is inserted into the second insertion hole so that the torsion bar can rotate together with the guide.

8. The steer-by-wire column according to claim 7, wherein: A third bearing is provided between the second transmission shaft and the guide, and the second transmission shaft and the guide are relatively rotatable.

9. The steer-by-wire column according to claim 1, wherein: A fourth bearing is provided between the guide and the column housing, and the guide and the column housing can rotate relative to each other.

10. The steer-by-wire column according to any one of claims 4 to 8, characterized in that: The wire-controlled steering column includes a sensor sleeved on the second transmission shaft, and the sensor is connected to the controller.

11. The steer-by-wire column according to claim 10, wherein: The sensor, the angle limiting mechanism, the feedback actuator and the controller are coaxially arranged.

12. The steer-by-wire column according to claim 10, wherein: The wire-controlled steering column includes a connecting wire harness, and the sensor and the controller are respectively provided with sockets, and the connectors at both ends of the connecting wire harness are respectively plugged into and matched with the sockets.

13. The steer-by-wire column according to claim 1, wherein: A first coupling is fixed to the end of the output shaft, a second coupling is fixed to the end surface of the guide facing the output shaft, the first coupling and the second coupling are connected and a shock-absorbing block is filled between the two.

14. The steer-by-wire column according to claim 4, wherein: The column housing has a first end surface for connecting with the column sleeve and a second end surface for connecting with the feedback actuator, wherein, A plurality of first fastening holes are provided on the first end face, a plurality of second fastening holes are provided on the end face of the column sleeve, and the column sleeve and the column housing are connected by first fasteners passing through the first fastening holes and the second fastening holes; and / or, A plurality of third fastening holes are provided on the second end surface, a plurality of fourth fastening holes are provided on the end surface of the feedback actuator, and the column housing and the feedback actuator are connected via a second fastener passing through the third fastening holes and the fourth fastening holes; and / or, The column housing has a plurality of connecting arms which are arranged on the outer peripheral wall and spaced apart along the circumferential direction. The connecting arms are provided with mounting holes for fixing the steering column.

15. A steer-by-wire system, characterized in that: include: steering wheel; The wire-controlled steering column according to any one of claims 1 to 14, wherein the steering column in the wire-controlled steering column is connected to the steering wheel; as well as The steering gear is used to drive the steering wheel to steer, and the steering gear is communicatively connected to the wire-controlled steering column.

16. A vehicle, characterized in that: Including the steer-by-wire system as claimed in claim 15.

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