Steering wheel assembly, drive-by-wire system and vehicle

Abstract

According to the steering wheel assembly, the drive-by-wire system and the vehicle, the safety and reliability of the vehicle can be improved. The steering wheel assembly comprises a base provided with a first limiting piece; the steering wheel tubular column is arranged on the base and can rotate relative to the base, and a second limiting piece is arranged at the end, away from the base, of the steering wheel tubular column; the steering wheel tubular column is sequentially sleeved with the limiting structures in a rotatable mode in the axis direction of the steering wheel tubular column, and each limiting structure is provided with a third limiting piece; in the direction from the steering wheel tubular column to the base, the second limiting piece can abut against the third limiting piece of the first limiting structure in the circumferential direction, and the two third limiting pieces of every two adjacent limiting structures can abut against each other in the circumferential direction. The third limiting piece of the last limiting structure can abut against the first limiting piece in the circumferential direction.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly relates to a steering wheel assembly, a by-wire system and a vehicle. Background Art

[0002] Benefiting from the multiple advantages of new energy vehicles such as cost-effectiveness and advanced technology, new energy vehicles have become one of the mainstream choices in the vehicle consumption market. New energy vehicles such as pure electric vehicles and range-extended vehicles have undergone unprecedented changes in the electronic and electrical architecture compared with traditional fuel vehicles. For example, the by-wire system is becoming the mainstream design of new energy vehicles. The by-wire system refers to an electronic control system that abandons a large number of mechanical connections and instead relies on sensors, actuators and electronic control units (ECUs) to achieve functions such as braking, steering and driving of the vehicle.

[0003] In a by-wire system of a vehicle in the related art, there is no mechanical connection between the steering wheel assembly and the steering actuator of the vehicle. The extreme rotation angle of the steering wheel assembly is not limited by the mechanical limit of the steering actuator, but is controlled by a controller and a motor. If the electronic control module of the by-wire system, such as the controller, fails, the steering wheel assembly is prone to infinite rotation, thus causing driver panic and even serious safety accidents. Summary of the Utility Model

[0004] The present application provides a steering wheel assembly, a by-wire system and a vehicle, aiming to solve the problem of infinite rotation of the steering wheel assembly caused by the failure of the electronic control module, and thus facilitating the improvement of the safety and reliability of the vehicle.

[0005] In a first aspect, the present application provides a steering wheel assembly, including: a base, on which a first limiting member is provided; a steering column, disposed on the base and capable of rotating relative to the base, and a second limiting member is provided at an end of the steering column away from the base; a plurality of limiting structures, sequentially sleeved on the steering column in a rotatable manner along the axis direction of the steering column, and each limiting structure is provided with a third limiting member; along the direction from the steering column to the base, the second limiting member can circumferentially abut against the third limiting member of the first limiting structure, the two third limiting members of adjacent two limiting structures can circumferentially abut against each other, and the third limiting member of the last limiting structure can circumferentially abut against the first limiting member.

[0006] Based on the above structure, the steering wheel assembly of the present application can achieve mechanical rotation limitation between the steering column and the base under the action of the first limiting member, the second limiting member and a plurality of third limiting members. In this way, even if the electronic control module of the by-wire system fails, the steering column will not rotate infinitely, which is beneficial to improving the safety and reliability of the by-wire system.

[0007] In some embodiments, the number of the limiting structures is three.

[0008] In some embodiments, the first limiting member, the second limiting member, and the third limiting member are all pin columns.

[0009] In some embodiments, the first limiting member, the second limiting member, and the third limiting member are all arc-shaped baffles extending along the circumferential direction of the steering wheel column.

[0010] In some embodiments, the steering wheel column includes: a column body rotatably provided on the base; and a top cover sleeved on the column body and fixedly connected to the column body. The second limiting member is provided on a surface of the top cover close to the base, and the second limiting member extends along the direction from the top cover to the base. The plurality of limiting structures are located between the top cover and the base.

[0011] In some embodiments, the limiting structure includes: a sleeve sleeved on the outer surface of the column body; and a limiting mounting portion provided on the outer surface of the sleeve. The third limiting member is provided on the limiting mounting portion and extends along the direction from the top cover to the base, and both ends of the third limiting member protrude from the surface of the limiting mounting portion.

[0012] In some embodiments, the column body and the top cover are of an integrally formed structure.

[0013] In some embodiments, the sleeve and the limiting mounting portion are of an integrally formed structure.

[0014] In some embodiments, an end face of one end of the column body close to the base is provided with a first mating portion. The base includes: a bottom plate, the first limiting member is provided on the bottom plate, and a second mating portion is provided on the bottom plate. The second mating portion mates with the first mating portion so that the column body can rotate relative to the bottom plate; and an annular baffle provided on the bottom plate, and the annular baffle and the bottom plate jointly enclose a receiving space for receiving the column body.

[0015] In some embodiments, one of the first mating portion and the second mating portion is a pin column, and the other is a groove adapted to the pin column.

[0016] In a second aspect, the present application provides a steer-by-wire system for a vehicle, including a steering actuator, a controller, and the steering wheel assembly according to the first aspect. The controller is electrically connected to the steering actuator and the steering wheel assembly.

[0017] In a third aspect, the present application provides a vehicle, including the by-wire system described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic structural diagram of a steering wheel assembly provided by an embodiment of the present application;

[0019] Figure 2 FIG. 10 is a schematic structural diagram of a limiting structure provided by an embodiment of the present application;

[0020] Figure 3 FIG. 14 is another schematic structural diagram of the limiting structure provided by an embodiment of the present application;

[0021] Figure 4 FIG. 18 is a schematic structural diagram of the second limiting member and the third limiting member in contact with each other provided by an embodiment of the present application;

[0022] Figure 5 FIG. 22 is a schematic structural diagram of a base provided by an embodiment of the present application;

[0023] Figure 6 FIG. 26 is a schematic structural diagram of a steering column provided by an embodiment of the present application.

[0024] The descriptions of the reference numerals in the drawings are as follows:

[0025] 10 - Steering wheel assembly;

[0026] 100 - Base, 110 - First limiting member, 120 - Bottom plate, 130 - Ring-shaped baffle, 121 - Second mating portion;

[0027] 200 - Steering column, 210 - Second limiting member, 220 - Column body, 221 - First mating portion, 230 - Top cover;

[0028] 300 - Limiting structure, 310 - Third limiting member, 320 - Sleeve, 330 - Limiting mounting portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] In the description of the present application, it should be understood that if terms such as "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0032] In the description of the present application, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] As the name implies, a by-wire system is a system based on electrical signal control. It abandons the traditional mechanical connection and uses a variety of sensors and electronic control systems to convert the physical actions of the driver into electrical signals, and then transmits them to the corresponding actuators through a bus to achieve precise and efficient management of the vehicle's dynamic behavior. In the by-wire system, by-wire steering, by-wire drive, and by-wire braking, etc. are becoming the focus of people's research.

[0034] In the by-wire system in the related art, the main function of the steering wheel is to provide the steering wheel assembly corner signal to the vehicle's controller. The controller then converts the above electrical signal into the vehicle's wheel corner signal through an algorithm and transmits it to the steering actuator, and then realizes the steering of the wheels through the steering motor. There is no mechanical connection between the steering wheel and the steering actuator. The limit rotation angle of the steering wheel is no longer limited by the mechanical structure of the steering actuator, but is realized by the electric control method of the controller.

[0035] The controller is equipped with a control algorithm to control the steering wheel's rotation limit. The controller limits the steering wheel's rotation limit angle through the control algorithm. However, if the controller in the wire control system fails, it is easy to cause the steering wheel to rotate infinitely, which can cause the driver to panic and even cause a safety accident.

[0036] Based on the above problems, the embodiments of the present application propose a steering wheel assembly, a wire control system and a vehicle, which aim to solve the problem of infinite rotation of the steering wheel assembly caused by failure of the electronic control module, thereby helping to improve the safety and reliability of the vehicle.

[0037] In a first aspect, the present application provides a steering wheel assembly 10. Figure 1 As shown, the steering wheel assembly 10 includes a base 100, a steering wheel column 200 and a plurality of limiting structures 300. A first limiting member 110 is provided on the base 100. The steering wheel column 200 is provided on the base 100 and can rotate relative to the base 100, and a second limiting member 210 is provided at one end of the steering wheel column 200 away from the base 100. The plurality of limiting structures 300 are sequentially sleeved on the steering wheel column 200 in a rotatable manner along the axial direction L of the steering wheel column 200, and each limiting structure 300 is provided with a third limiting member 310. Along the direction from the steering wheel column 200 to the base 100, the second limiting member 210 can circumferentially abut against the third limiting member 310 of the first limiting structure 300, the two third limiting members 310 of two adjacent limiting structures 300 can circumferentially abut against each other, and the third limiting member 310 of the last limiting structure 300 can circumferentially abut against the first limiting member 110.

[0038] The steering wheel assembly 10 of the embodiment of the present application includes a base 100, a steering wheel column 200, and a plurality of limit structures 300. The base 100 is the base of the steering wheel assembly 10, and the base 100 is used to seal the steering wheel column 200. Generally, the steering wheel column 200 can have built-in electrical components to provide necessary power and signal conduction for the steering actuator of the wire control system. By providing the base 100, dust, moisture and other external impurities can be prevented from entering the steering wheel column 200, reducing the potential risk of electrical failure, thereby improving the reliability and life of the wire control system.

[0039] The steering column 200 is a component for transmitting the driver's steering force. Generally, the steering wheel assembly 10 further includes a steering wheel (not shown in the figure), and the steering wheel is fixedly connected to one end of the steering column 200 away from the base 100. The operator can turn the steering wheel, thereby driving the steering column 200 to rotate relative to the base 100, and further providing an angular signal and a torque signal to the steering actuator. Optionally, the steering wheel assembly 10 further includes a torque sensor and an angle sensor disposed between the steering column 200 and the base 100. The torque sensor is used to detect the rotational torque applied by the person to the steering column 200, which can be used as a parameter for judging the driver's steering intention. The angle sensor is used to detect the angle when the steering column 200 rotates relative to the base 100 and transmit an electronic signal representing the angle information to the steering actuator.

[0040] A plurality of limiting structures 300 can achieve mechanical rotational limitation between the steering column 200 and the base 100. Specifically, the base 100 is provided with a first limiting member 110, one end of the steering column 200 away from the base 100 is provided with a second limiting member 210, and each of the plurality of limiting structures 300 is provided with a third limiting member 310. Taking the number of the limiting structures 300 being two as an example, the specific process of the plurality of limiting structures 300 achieving mechanical rotational limitation between the steering column 200 and the base 100 is described.

[0041] First, the steering column 200 can rotate relative to the base 100. During the rotation of the steering column 200, in the direction from the steering column 200 to the base 100, the second limiting member 210 of the steering column 200 can be in circumferential contact with the third limiting member 310 of the first limiting structure 300. Under this contact effect, the rotation of the steering column 200 will drive the first limiting structure 300 to rotate. After that, during the synchronous rotation of the steering column 200 and the first limiting structure 300, the third limiting member 310 of the first limiting structure 300 will be in circumferential contact with the third limiting member 310 of the adjacent limiting structure 300, that is, the second limiting structure 300. Under this contact effect, the rotation of the first limiting structure 300 will drive the adjacent second limiting structure 300 to rotate. Finally, during the synchronous rotation of the steering column 200 and the two limiting structures 300, the third limiting member 310 of the second limiting structure 300 will be in circumferential contact with the first limiting member 110 of the base 100, thereby stopping the rotation. Thus, the steering column 200 also stops rotating. At this time, the steering column 200 has achieved mechanical rotational limitation relative to the base 100, and the steering column 200 cannot continue to rotate relative to the base 100.

[0042] Based on the above structure, the steering wheel assembly 10 of the present application can achieve mechanical rotational limit between the steering column 200 and the base 100 under the action of the first limiting member 110, the second limiting member 210, and multiple third limiting members 310. In this way, even if the electronic control module of the by-wire system fails, the steering column 200 will not rotate infinitely, which is beneficial to improving the safety and reliability of the by-wire system.

[0043] In the above, the case where the number of the limiting structures 300 is two is taken as an example for illustration. It is easy to understand that when the number of the limiting structures 300 is more, the principle is the same, that is, each limiting structure 300 is driven to rotate in sequence by the rotation of the steering column 100. Finally, when the first limiting member 110, the second limiting member 210, and multiple third limiting members 310 are in contact with each other, the mechanical rotational limit between the steering column 200 and the base 100 is achieved.

[0044] It should be noted that since the first limiting member 110, the second limiting member 210, and the third limiting member 310 themselves have a certain circumferential length in the circumferential direction of the steering column 200, and this circumferential length can be equivalent to a circumferential arc length, and the circumferential arc length corresponds to a certain angle. Therefore, the maximum rotation angle between the steering column 200 and the first limiting structure 300, the maximum rotation angle between two adjacent limiting structures 300, and the maximum rotation angle between the last limiting structure 300 and the base 100 are actually all less than 360°.

[0045] In addition, without considering the length occupied by the first limiting member 110, the second limiting member 210, and the third limiting member 310 themselves in the circumferential direction of the steering column 200, for each additional limiting structure 300, the maximum rotation angle between the steering column 200 and the base 100 increases by 360°. For example, without considering the length occupied by the first limiting member 110, the second limiting member 210, and the third limiting member 310 themselves in the circumferential direction of the steering column 200, when the number of the limiting structures 300 is two, the limit rotation angle of the steering wheel assembly 10 is 360° + 360° + 360° = 1080°; when the number of the limiting structures 300 is three, the limit rotation angle of the steering wheel assembly 10 is 360° + 360° + 360° + 360° = 1440°.

[0046] In some embodiments, the steering wheel assembly 10 has an initial position, and the steering column 200 can rotate a first maximum angle relative to the base 100 along a first rotation direction and a second maximum angle along a second rotation direction at the initial position, the first maximum angle and the second maximum angle are the same, and the first rotation direction and the second rotation direction are opposite.

[0047] In this embodiment, the steering wheel assembly 10 has an initial position, and the steering column 200 can rotate relative to the base 100 in two opposite rotational directions at the initial position. That is to say, the steering column 200 of the steering wheel assembly 10 in this application can rotate left and right as in the related art. When rotating left, the vehicle turns left under the action of the by-wire system; when rotating right, the vehicle turns right under the action of the by-wire system. In this embodiment, based on the above limitation of the initial position, the steering column 200 can rotate left or right, and the maximum rotation angle when rotating left is the same as the maximum rotation angle when rotating right. The sum of the maximum rotation angle when rotating left and the maximum rotation angle when rotating right is the limit rotation angle of the steering wheel assembly 10. Such a setting enables the operator to always start rotating the steering wheel from the initial position of the steering wheel assembly 10. The steering column 200 can be limited by the first limiting member 110 of the base 100 in two rotational directions, so that the above-mentioned operating state conforms to the driving habits of the personnel, is convenient for the driver to quickly adapt, and improves the safety of the driver.

[0048] It should be noted that when the electronic control module of the by-wire system fails, it is not necessary to consider whether the steering wheel assembly 10 is in the initial position, as long as the steering column 200 of the steering wheel assembly 10 and the base 100 can achieve mechanical rotational limitation and the steering wheel assembly 10 will not rotate infinitely.

[0049] In some embodiments, as Figure 1 shown, the number of the limiting structures 300 is three. In this embodiment, setting the number of the limiting structures 300 to three makes the limit rotation angle of the steering column 200 of the steering wheel assembly 10 relative to the base 100 less than 1440°. That is, the rotation angles when rotating left and right are both less than 720°. Moreover, the specific value of the limit rotation angle of the steering column 200 relative to the base 100 can be determined by flexibly setting the lengths of the first limiting member 110, the second limiting member 210, and the third limiting member 310 in the circumferential direction of the steering column 200. Thus, it is beneficial to improve the convenience of designing the limit rotation angle of the steering wheel assembly 10.

[0050] In some embodiments, the first limiting member 110, the second limiting member 210, and the third limiting member 310 are all pin columns; alternatively, the first limiting member 110, the second limiting member 210, and the third limiting member 310 are all arc-shaped baffles extending along the circumferential direction of the steering wheel column 200. The shapes of the first limiting member 110, the second limiting member 210, and the third limiting member 310 affect the limit rotation angle of the steering wheel column 200 relative to the base 100. Defining the shapes of the first limiting member 110, the second limiting member 210, and the third limiting member 310 is beneficial to improving the flexibility and convenience of the design of the limit rotation angle of the steering wheel column 200 relative to the base 100.

[0051] Taking the number of the limiting structures 300 as three as an example, the influence of the shapes of the first limiting member 110, the second limiting member 210, and the third limiting member 310 on the limit rotation angle of the steering wheel column 200 relative to the base 100 will be described below.

[0052] As Figure 2 shown and with reference to Figure 1 , when the first limiting member 110, the second limiting member 210, and the third limiting member 310 are all cylindrical pin columns, the angular values α corresponding to the first limiting member 110, the second limiting member 210, and the third limiting member 310 in the circumferential direction of the steering wheel column 200 are related to the diameters of the first limiting member 110, the second limiting member 210, and the third limiting member 310. In this case, the diameters of the first limiting member 110, the second limiting member 210, and the third limiting member 310 can be flexibly set so that the limit rotation angle of the steering wheel assembly 10 is, for example, 1420°, 1400°, 1350°, etc.

[0053] As Figure 3 and Figure 4 shown, when the first limiting member 110, the second limiting member 210, and the third limiting member 310 are all arc-shaped baffles extending along the circumferential direction, the circumferential angular value β occupied by each arc-shaped baffle can be the same or different. Then the rotation angle of the second limiting member 210 relative to the first third limiting member 310 is 360° - 2β, the rotation angle of the first third limiting member 310 relative to the second third limiting member 310 is 360° - 2β, the rotation angle of the second third limiting member 310 relative to the third third limiting member 310 is 360° - 2β, and the rotation angle between the last third limiting member 310, that is, the third third limiting member 310 and the first limiting member 110 is 360° - 2β. In this way, the limit rotation angle of the steering wheel column 200 relative to the base 100 is 1440° - 8β. If the circumferential angular value β occupied by each arc-shaped baffle is 45°, then the specific value of the limit rotation angle of the steering wheel column 200 relative to the base 100 is 1080°.

[0054] In some embodiments, such as Figure 1 , Figure 4 and Figure 6 shown, the steering column 200 includes a column body 220 and a top cover 230. The column body 220 is rotatably disposed on the base 100. The top cover 230 is sleeved on the column body 220 and fixedly connected to the column body 220. The second limiting member 210 is disposed on a surface of the top cover 230 close to the base 100. The second limiting member 210 extends along the direction from the top cover 230 to the base 100. A plurality of limiting structures 300 are located between the top cover 230 and the base 100.

[0055] This embodiment proposes one of the structures of the steering column 200. The steering column 200 includes a column body 220 and a top cover 230. The top cover 230 can provide an installation space for the second limiting member 210, which is beneficial to improving the convenience of setting the second limiting member 210. In addition, the top cover 230 and the base 100 can also play a role in axially limiting the plurality of limiting structures 300, preventing the limiting structures 300 from moving axially along the axis direction L of the steering column 200.

[0056] In some embodiments, such as Figures 1 to 4 shown, the limiting structure 300 includes a sleeve 320 and a limiting installation portion 330. The sleeve 320 is sleeved on the outer surface of the column body 220. The limiting installation portion 330 is disposed on the outer surface of the sleeve 320. The third limiting member 310 is disposed on the limiting installation portion 330 and extends along the axis direction L of the column body 220. Both ends of the third limiting member 310 protrude from the surface of the limiting installation portion 330.

[0057] This embodiment proposes one of the structures of the limiting structure 300. The limiting structure 300 includes a sleeve 320 and a limiting installation portion 330. The sleeve 320 is sleeved on the outer surface of the column body 220. The limiting installation portion 330 is disposed on the outer surface of the sleeve 320. The limiting installation portion 330 can provide an installation space for the third limiting member 310. For example, if the third limiting member 310 is a pin, the limiting installation portion 330 can be provided with a through hole, and the third limiting member 310 is inserted through the through hole; or for another example, if the third limiting member 310 is an arc-shaped plate structure, the limiting installation portion 330 can be provided with a through slot, and the third limiting member 310 is inserted through the through slot. Thus, it is beneficial to improve the convenience of setting the third limiting member 310.

[0058] Optionally, the third limiting member 310 can be installed on the limiting installation portion 330 by means of interference fit, detachable connection, etc.

[0059] Optionally, the shape of the limiting installation portion 330 can be, for example, a cylinder, a cube, a cuboid, etc., and the present application does not limit this.

[0060] Further, both ends of the third limiting member 310 protrude from the surface of the limiting installation portion 330. Thus, both ends of each third limiting member 310 can abut against the limiting members of other components, thereby realizing the mechanical rotation limitation of the steering column 200.

[0061] In some embodiments, the column body 220 and the top cover 230 are of an integrally formed structure. For example, the two can be made by processes such as casting, 3D printing, die casting, etc., which is beneficial to improving the manufacturing convenience of the steering column 200 and reducing costs.

[0062] In some embodiments, the sleeve 320 and the limiting installation portion 330 are of an integrally formed structure. For example, the two can be made by processes such as casting, 3D printing, die casting, etc., which is beneficial to improving the manufacturing convenience of the limiting structure 300 and reducing costs.

[0063] In some embodiments, as Figure 5 and Figure 6 shown, an end face of one end of the column body 220 close to the base 100 is provided with a first mating portion 221. The base 100 includes a bottom plate 120 and an annular baffle 130. The first limiting member 110 is provided on the bottom plate 120. A second mating portion 121 is provided on the bottom plate 120. The second mating portion 121 cooperates with the first mating portion 221 so that the column body 220 can rotate relative to the bottom plate 120. The annular baffle 130 is provided on the bottom plate 120. The annular baffle 130 and the bottom plate 120 together enclose a receiving space for receiving the column body 220.

[0064] This embodiment proposes one structure of the base 100. A second mating portion 121 and a first limiting member 110 are provided on the bottom plate 120 of the base 100. The second mating portion 121 can cooperate with the first mating portion 221 to realize the rotatable connection of the column body 220 relative to the base 100. Optionally, one of the first mating portion 221 and the second mating portion 121 is a pin, and the other is a groove adapted to the pin.

[0065] Further, an annular baffle 130 is further provided on the bottom plate 120. The annular baffle 130 and the bottom plate 120 together enclose a receiving space for receiving the column body 220. Such a setting is beneficial to improving the reliability and stability of the rotatable connection between the steering column 200 and the base 100, and reducing the probability of the steering column 200 shaking.

[0066] In a second aspect, the present application provides a by-wire system for a vehicle. The by-wire system includes a steering actuator, a controller, and the steering wheel assembly 10 described in the first aspect. The controller is electrically connected to the steering actuator and the steering wheel assembly 10. In this way, various signals emitted by the steering wheel assembly 10, such as the steering angle signal, the torque signal, etc., can be transmitted to the controller, and the controller then controls the steering actuator to implement vehicle steering.

[0067] For the by-wire system of the present application, the steering wheel assembly 10 described in the first aspect is used. The steering wheel assembly 10 can achieve mechanical rotational limit between the steering wheel column 200 and the base 100 under the action of the first limit member 110, the second limit member 210, and a plurality of third limit members 310. In this way, even if the electronic control module of the by-wire system fails, the steering wheel column 200 will not rotate infinitely, which is beneficial to improving the safety and reliability of the by-wire system.

[0068] In a third aspect, the present application provides a vehicle including the by-wire system described in the second aspect. Thereby, it is beneficial to improve the safety and reliability of the vehicle. The vehicle can be, for example, a pure electric vehicle, an extended-range vehicle, etc., and the present application does not limit this.

[0069] The above content is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A steering wheel assembly, characterized in that: include: A base, wherein a first position-limiting member is provided on the base; A steering wheel column, which is arranged on the base and can rotate relative to the base, and a second stopper is arranged at one end of the steering wheel column away from the base; A plurality of limiting structures are sequentially and rotatably sleeved on the steering column along the axis direction of the steering column, and each of the limiting structures is provided with a third limiting member; Along the direction from the steering wheel column to the base, the second limit member can circumferentially abut against the third limit member of the first limit structure, the two third limit members of two adjacent limit structures can circumferentially abut against each other, and the third limit member of the last limit structure can circumferentially abut against the first limit member.

2. The steering wheel assembly according to claim 1, characterized in that: The number of the limiting structures is three.

3. The steering wheel assembly according to claim 1, characterized in that: The first limiting member, the second limiting member, and the third limiting member are all pins; Alternatively, the first limiting member, the second limiting member, and the third limiting member are all arc-shaped baffles extending along the circumferential direction of the steering wheel column.

4. The steering wheel assembly according to claim 1, characterized in that: The steering column comprises: a column body, the column body being rotatably disposed on the base; and A top cover is sleeved on the column body and fixedly connected to the column body, the second limiting member is arranged on a side surface of the top cover close to the base, the second limiting member extends from the top cover to the base, and the multiple limiting structures are located between the top cover and the base.

5. The steering wheel assembly according to claim 4, characterized in that: The limiting structure comprises: A sleeve, sleeved on the outer surface of the pipe column body; and The limiting mounting portion is arranged on the outer surface of the sleeve, the third limiting member is arranged on the limiting mounting portion and extends along the axial direction of the column body, and both ends of the third limiting member protrude from the surface of the limiting mounting portion.

6. The steering wheel assembly according to claim 5, characterized in that: The column body and the top cover are an integrally formed structure; And / or, the sleeve and the limiting mounting portion are an integrally formed structure.

7. The steering wheel assembly according to claim 4, characterized in that: The end surface of the column body close to the base is provided with a first matching portion, and the base comprises: A bottom plate, the first limiting member is arranged on the bottom plate, a second matching portion is arranged on the bottom plate, and the second matching portion matches with the first matching portion so that the column body can rotate relative to the bottom plate; and An annular baffle is arranged on the bottom plate, and the annular baffle and the bottom plate are jointly arranged to form a receiving space for receiving the column body.

8. The steering wheel assembly according to claim 7, characterized in that: One of the first matching portion and the second matching portion is a pin, and the other is a groove matched with the pin.

9. A wire control system for a vehicle, characterized in that: The invention comprises a steering actuator, a controller and a steering wheel assembly as claimed in any one of claims 1 to 8, wherein the controller is electrically connected to the steering actuator and the steering wheel assembly.

10. A vehicle, characterized in that: Comprising the control-by-wire system as claimed in claim 9.

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