Steer-by-wire system and vehicle

Abstract

The present application provides a wire-controlled steering system and a vehicle, which relate to the field of vehicle technology and are used to improve the safety of vehicle driving. The wire-controlled steering system includes a first steering knuckle, a second steering knuckle, a first flexible cable, a second flexible cable and a drive assembly. The second steering knuckle is located on one side of the first steering knuckle. The first flexible cable is connected to the first steering knuckle. The second flexible cable is connected to the second steering knuckle. The drive assembly includes a first drive member and a second drive member, the first drive member is connected to the first flexible cable and is used to tighten or loosen the first flexible cable, and the second drive member is connected to the second flexible cable and is used to tighten or loosen the second flexible cable. In this way, the wire-controlled steering system can be prevented from losing control of the vehicle's direction when the vehicle loses power, the power supply is unstable, the electrical signal fails, etc., which is beneficial to improving the safety and reliability of vehicle driving. At the same time, the structure of the wire-controlled steering system is simple, which is beneficial to reducing the manufacturing cost of the vehicle.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a steer-by-wire system and a vehicle. Background Art

[0002] The traditional steering system includes a steering wheel, steering column, steering intermediate shaft, steering gear, steering rod, etc. The driver can operate the steering wheel and pull the left and right clevises through the steering gear installed on the subframe to achieve the steering function of the vehicle.

[0003] Due to the rapid development of steer-by-wire and autonomous driving, related technologies have removed the steering intermediate shaft, or completely removed the steering wheel, steering column, and steering intermediate shaft light, leaving only the steering gear as the steering actuator, controlled by electrical signals. However, if the vehicle's entire electronic control fails, the vehicle cannot be controlled by wire alone, thus reducing the safety of passengers. Summary of the Invention

[0004] In order to solve the above technical problems, the present application provides a wire-controlled steering system and a vehicle for improving the safety of vehicle driving.

[0005] In a first aspect, an embodiment of the present application provides a steer-by-wire system, comprising: a first steering knuckle, a second steering knuckle, a first flexible cable, a second flexible cable, and a drive assembly. The second steering knuckle is located on one side of the first steering knuckle. The first flexible cable is connected to the first steering knuckle. The second flexible cable is connected to the second steering knuckle. The drive assembly comprises a first drive member and a second drive member, the first drive member being connected to the first flexible cable and used to tighten or loosen the first flexible cable, and the second drive member being connected to the second flexible cable and used to tighten or loosen the second flexible cable.

[0006] According to the steer-by-wire system of the embodiment of the present application, by connecting the first drive member to the first steering knuckle via the first flexible cable, and the second drive member to the second steering knuckle via the second flexible cable, the driver can control the steering of the vehicle by controlling the first drive member to tighten and loosen the first flexible cable, and by controlling the second drive member to tighten and loosen the second flexible cable. This can prevent the steer-by-wire system from losing control of the vehicle's direction in situations such as power outage, unstable power supply, and electrical signal failure, thereby improving the safety and reliability of vehicle driving. At the same time, the steer-by-wire system has a simple structure, which helps reduce the manufacturing cost of the vehicle, and the first and second flexible cables occupy less space, which helps reduce the impact on other functional modules of the vehicle, thereby helping to rationalize the vehicle's structural layout.

[0007] In one possible implementation, the drive assembly further includes a third drive member, and the third drive member is transmission-connected to both the first drive member and the second drive member.

[0008] In one possible implementation, the third driving member is a driving wheel, which is located between the first driving member and the second driving member and is transmission-connected to the first driving member and the second driving member. The first flexible cable is wound around the first driving member, and the second flexible cable is wound around the second driving member.

[0009] In one possible implementation, the drive assembly also includes a shell, which has a accommodating space, a first mounting hole and a second mounting hole. The drive wheel, the first drive member and the second drive member are arranged in the accommodating space. The first mounting hole and the second mounting hole are both connected to the accommodating space. The first flexible cable passes through the first mounting hole, and the second flexible cable passes through the second mounting hole.

[0010] In one possible implementation, the drive assembly further includes a first torsion spring, one end of which is connected to the drive wheel, and the other end of which is connected to the housing.

[0011] In one possible implementation, the drive assembly further includes a second torsion spring and a third torsion spring, wherein one end of the second torsion spring is connected to the first drive member and the other end is connected to the housing, and one end of the third torsion spring is connected to the second drive member and the other end is connected to the housing.

[0012] In one possible implementation, the drive wheel is movably disposed on the housing, and the drive wheel has a first position and a second position. In the first position, the drive wheel is transmission-connected to the first drive member and the second drive member, and in the second position, the drive wheel is disengaged from the first drive member and the second drive member.

[0013] In one possible implementation, the drive assembly further includes a control member, which is disposed on one side of the drive wheel and is used to control the rotation of the drive wheel.

[0014] In one possible implementation, the steer-by-wire system further includes a bolt fastener connected to the first steering knuckle, an outer peripheral wall of the bolt fastener having a fixing groove, and one end of the first flexible cable is disposed in the fixing groove.

[0015] In a second aspect, the present application provides a vehicle comprising the above-mentioned steer-by-wire system.

[0016] Among them, the technical effects brought about by any design method in the second aspect can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here.

[0017] In one possible implementation, the wire-controlled steer system also includes a subframe, the first steering knuckle is arranged at one end of the subframe in the length direction, and the second steering knuckle is arranged at the other end of the subframe in the length direction, the drive assembly is located on one side of the subframe, the first flexible cable includes a first connecting section and a second connecting section, the two ends of the first connecting section are respectively connected to the first steering knuckle and the subframe, the first driving member is connected to the first connecting section through the second connecting section, and is used to tighten or loosen the second connecting section.

[0018] In one possible implementation, the steer-by-wire system further includes a fixed bracket, which is disposed on the subframe. The fixed bracket has a fixed notch, which is located at an end of the fixed bracket away from the subframe, and the first flexible cable passes through the fixed notch. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of a conventional steering system for a vehicle;

[0022] Figure 2 A perspective view of a steer-by-wire system provided in some embodiments of the present application;

[0023] Figure 3 A schematic diagram of a steer-by-wire system provided in some embodiments of the present application;

[0024] Figure 4 A partial schematic diagram of a steer-by-wire system provided in some embodiments of the present application;

[0025] Figure 5 A partial stereoscopic view of a steer-by-wire system provided in some embodiments of the present application.

[0026] Reference numerals:

[0027] 100. Steer-by-wire system;

[0028] 1. Subframe;

[0029] 2. First steering knuckle;

[0030] 3. Second steering knuckle;

[0031] 4. First flexible cable; 41. First connecting section; 42. Second connecting section;

[0032] 5. Second flexible cable; 51. Third connecting section; 52. Fourth connecting section;

[0033] 6. Drive assembly; 61. Control member; 62. First drive member; 63. Second drive member; 64. Drive wheel; 65. Housing; 651. First mounting hole; 652. Second mounting hole; 66. First torsion spring;

[0034] 7. Fixing bracket; 71. Fixing notch; 72. Locking piece;

[0035] 8. Bolt fasteners. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned objectives, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0037] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present application, such as "inside" and "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0039] In the description of the embodiments of the present application, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element limited by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In the absence of further restrictions, an element limited by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0040] See also Figure 1 , Figure 1 A diagram of a traditional vehicle steering system. A traditional steering system includes components such as a steering wheel, steering column, intermediate steering shaft, steering gear, and steering rods. The driver operates the steering wheel and, through the steering gear mounted on the subframe, pulls the left and right clevises to steer the vehicle.

[0041] Due to the rapid development of steer-by-wire and autonomous driving, related technologies have removed the steering intermediate shaft, or completely removed the steering wheel, steering column, and steering intermediate shaft light, leaving only the steering gear as the steering actuator, controlled by electrical signals. However, if the vehicle's entire electronic control fails, the vehicle cannot be controlled by wire alone, thus reducing the safety of passengers.

[0042] In order to solve the above technical problems, the present application provides a steer-by-wire system and a vehicle.

[0043] The following describes the steer-by-wire system according to an embodiment of the present application.

[0044] See also Figure 2 and Figure 3 , Figure 2 A perspective view of a steer-by-wire system provided in some embodiments of the present application. Figure 3 Schematic diagram of a steer-by-wire system provided in some embodiments of the present application. The steer-by-wire system 100 may include a first steering knuckle 2 , a second steering knuckle 3 , a first flexible cable 4 , a second flexible cable 5 , and a drive assembly 6 .

[0045] The second steering knuckle 3 is located on one side of the first steering knuckle 2. Specifically, the first steering knuckle 2 and the second steering knuckle 3 are rotatably connected to the vehicle body, and the steering of the vehicle can be controlled by controlling the first steering knuckle 2 and the second steering knuckle 3.

[0046] The first flexible cable 4 is connected to the first steering knuckle 2 , and the rotation of the first steering knuckle 2 can be controlled by controlling the first flexible cable 4 .

[0047] The second flexible cable 5 is connected to the second steering knuckle 3 , and the rotation of the second steering knuckle 3 can be controlled by controlling the second flexible cable 5 .

[0048] For example, the first flexible cable 4 and the second flexible cable 5 may be made of steel, which is helpful in reducing the manufacturing cost of the vehicle.

[0049] The drive assembly 6 may include a first drive member 62. The first drive member 62 is connected to the first flexible cable 4 and is used to tighten or loosen the first flexible cable 4. The first drive member 62 is connected to the first steering knuckle 2 via the first flexible cable 4, and the first drive member 62 can control the rotation of the first steering knuckle 2 by tightening or loosening the first flexible cable 4, so that the first steering knuckle 2 rotates away from or toward the second steering knuckle 3.

[0050] The drive assembly 6 may include a second drive member 63. The second drive member 63 is connected to the second flexible cable 5 and is used to tighten or loosen the second flexible cable 5. The second drive member 63 is connected to the second steering knuckle 3 via the second flexible cable 5, and the second drive member 63 can control the rotation of the second steering knuckle 3 by tightening or loosening the second flexible cable 5, so that the second steering knuckle 3 rotates away from or toward the first steering knuckle 2.

[0051] According to the steer-by-wire system 100 of the embodiment of the present application, by connecting the first drive member 62 to the first steering knuckle 2 via the first flexible cable 4 and the second drive member 63 to the second steering knuckle 3 via the second flexible cable 5, the driver can control the steering of the vehicle by controlling the first drive member 62 to tighten and loosen the first flexible cable 4, and controlling the second drive member 63 to tighten and loosen the second flexible cable 5. This can prevent the steer-by-wire system 100 from losing control of the vehicle's direction in situations such as power outage, unstable power supply, and electrical signal failure, thereby improving the safety and reliability of vehicle driving. Furthermore, the steer-by-wire system 100 has a simple structure, which helps reduce the manufacturing cost of the vehicle, and the first flexible cable 4 and the second flexible cable 5 occupy a small space, which helps reduce the impact on other functional modules of the vehicle, thereby helping to rationalize the vehicle's structural layout.

[0052] Please continue reading Figure 2 and Figure 3In some embodiments, a vehicle may include a subframe 1. A first steering knuckle 2 is disposed at one end of the subframe 1 in the longitudinal direction, and a second steering knuckle 3 is disposed at the other end of the subframe 1 in the longitudinal direction. Specifically, the first steering knuckle 2 and the second steering knuckle 3 are rotatably disposed on opposite sides of the subframe 1 in the longitudinal direction. The steering of the vehicle can be controlled by controlling the first steering knuckle 2 and the second steering knuckle 3.

[0053] The driving assembly 6 is located at one side of the sub-frame 1. For example, the driving assembly 6 may be located at one side of the sub-frame 1 in the height direction.

[0054] The first flexible cable 4 may include a first connecting section 41. The two ends of the first connecting section 41 are respectively connected to the first steering knuckle 2 and the subframe 1. Since the subframe 1 is relatively fixed while the first steering knuckle 2 can rotate relative to the subframe 1, the first connecting section 41 can drive the first steering knuckle 2 to rotate.

[0055] The first flexible cable 4 may further include a second connecting segment 42. The first driving member 62 may be connected to the first connecting segment 41 via the second connecting segment 42, and the first driving member 62 may tighten and loosen the first flexible cable 4. Thus, when the first driving member 62 tightens the first flexible cable 4, the second connecting segment 42 pulls the first connecting segment 41 toward the second steering knuckle 3, so that the first connecting segment 41 can drive the first steering knuckle 2 to rotate toward the second steering knuckle 3. When the first driving member 62 loosens the first flexible cable 4, the second connecting segment 42 can move the first connecting segment 41 away from the second steering knuckle 3, so that the first connecting segment 41 can drive the first steering knuckle 2 to rotate away from the second steering knuckle 3.

[0056] Thus, the movement of the first connecting section 41 can be controlled by the second connecting section 42, so that the first connecting section 41 can better control the rotation of the first steering knuckle 2, thereby facilitating improved reliability of vehicle rotation.

[0057] The second flexible cable 5 may include a third connecting section 51. The ends of the third connecting section 51 are respectively connected to the second steering knuckle 3 and the subframe 1. Since the subframe 1 is relatively fixed, while the second steering knuckle 3 can rotate relative to the subframe 1, the third connecting section 51 can drive the second steering knuckle 3 to rotate.

[0058] The second flexible cable 5 may further include a fourth connecting segment 52. The second driving member 63 may be connected to the third connecting segment 51 via the fourth connecting segment 52, and the second driving member 63 may tighten and loosen the second flexible cable 5. Thus, when the second driving member 63 tightens the second flexible cable 5, the fourth connecting segment 52 pulls the third connecting segment 51 toward the first steering knuckle 2, so that the third connecting segment 51 can drive the second steering knuckle 3 to rotate toward the first steering knuckle 2. When the second driving member 63 loosens the second flexible cable 5, the fourth connecting segment 52 can move the third connecting segment 51 away from the first steering knuckle 2, so that the third connecting segment 51 can drive the second steering knuckle 3 to rotate away from the first steering knuckle 2.

[0059] Therefore, the movement of the third connecting segment 51 can be controlled by the fourth connecting segment 52, so that the third connecting segment 51 can better control the rotation of the second steering knuckle 3, thereby facilitating improved reliability of vehicle rotation.

[0060] See also Figure 3 and Figure 4 , Figure 4 A partial schematic diagram of a steer-by-wire system provided in some embodiments of the present application. In some embodiments, the drive assembly 6 may further include a third drive member. The third drive member is transmission-connected to both the first drive member 62 and the second drive member 63. Specifically, the third drive member can control the first drive member 62 to tighten or loosen the first flexible cable 4, and the third drive member can control the second drive member 63 to tighten or loosen the second flexible cable 5. Thus, the first flexible cable 4 and the second flexible cable 5 can be controlled solely by the third drive member, thereby improving the user experience.

[0061] Please continue reading Figure 3 and Figure 4 In some embodiments, the third driving member may be a drive wheel 64. The drive assembly 6 may further include a control member 61. The control member 61 may be connected to the drive wheel 64 and configured to drive the drive wheel 64 to rotate. For example, the driver may rotate the control member 61 to drive the drive wheel 64. The control member 61 and the drive wheel 64 may be connected via a bolt fastener 8.

[0062] For example, the control member 61 may be formed in the shape of a handle or a steering wheel, which is not limited in the present application.

[0063] In the longitudinal direction of the sub-frame 1, the driving wheel 64 can be located between the first driving member 62 and the second driving member 63, and be in transmission connection with the first driving member 62 and the second driving member 63. For example, the driving wheel 64 can be a transmission member such as a gear or a sprocket, and the first driving member 62 and the second driving member 63 can be driven by a belt, a chain, etc., which is not limited in this application.

[0064] Specifically, the first drive member 62 and the second drive member 63 can both be gears, with the first drive member 62 and the second drive member 63 being provided on opposite sides of the drive wheel 64. The first flexible cable 4 is wound around the first drive member 62, and the second flexible cable 5 is wound around the second drive member 63. Thus, when the vehicle needs to be controlled to turn left or right, the control member 61 drives the first drive member 62 and the second drive member 63 to rotate, thereby tightening or loosening the first flexible cable 4 and the second flexible cable 5, thereby controlling the vehicle's steering. The simple structure helps reduce the vehicle's manufacturing cost.

[0065] It should be noted that the first driving member 62 and the second driving member 63 may also be directly controlled by the control member 61 .

[0066] Please continue reading Figure 3 and Figure 4 In some embodiments, the drive assembly 6 may further include a housing 65. The housing 65 may have a storage space. The drive wheel 64, the first drive member 62, and the second drive member 63 may be disposed within the storage space. This reduces contamination of the drive wheel 64, the first drive member 62, and the second drive member 63 by dust and other pollutants, thereby increasing the service life of the drive wheel 64, the first drive member 62, and the second drive member 63.

[0067] The housing 65 may have a first mounting hole 651 and a second mounting hole 652. The first mounting hole 651 and the second mounting hole 652 are both connected to the accommodating space, and the first flexible cable 4 is passed through the first mounting hole 651, and the second flexible cable 5 is passed through the second mounting hole 652. Specifically, the first flexible cable 4 is passed through the first mounting hole 651 and connected to the first driving member 62, and the second flexible cable 5 is passed through the second mounting hole 652 and connected to the second driving member 63. Thus, by providing the first mounting hole 651, the winding or loosening of the first flexible cable 4 can be guided, and the second mounting hole 652 can guide the winding or loosening of the second flexible cable 5, so that the winding or loosening of the first flexible cable 4 and the second flexible cable 5 can be smoother, thereby helping to improve the user experience.

[0068] For example, the first mounting hole 651 and the second mounting hole 652 can be provided on a side of the housing 65 close to the subframe 1. This arrangement makes the layout of the first flexible cable 4 and the second flexible cable 5 more reasonable and reduces the required length of the first flexible cable 4 and the second flexible cable 5, thereby helping to reduce costs.

[0069] Please continue reading Figure 3 and Figure 4 In some embodiments, the drive assembly 6 may further include a first torsion spring 66. One end of the first torsion spring 66 is connected to the drive wheel 64, and the other end is connected to the housing 65. The connection between the first torsion spring 66 and the housing 65 and the drive wheel 64 may be a fixed connection or a detachable connection.

[0070] Therefore, when the driver drives the driving wheel 64 to rotate through the control member 61, the first torsion spring 66 can be compressed. When the driver stops driving the driving wheel 64 through the control member 61, the driving wheel 64 can be reset to the initial position under the action of the first torsion spring 66, which is beneficial to improving the user experience.

[0071] It should be noted that the initial position of the drive wheel 64 refers to the position of the drive wheel 64 when the vehicle is not performing a steering action.

[0072] Please continue reading Figure 3 and Figure 4 In some embodiments, the drive assembly 6 may further include a second torsion spring and a third torsion spring. One end of the second torsion spring is connected to the first drive member 62, and the other end is connected to the housing 65. One end of the third torsion spring is connected to the second drive member 63, and the other end is connected to the housing 65. Thus, by providing the second torsion spring, the first drive member 62 can achieve self-recovery, and by providing the third torsion spring, the second drive member 63 can achieve self-recovery, so that after the vehicle completes the steering operation, the first drive member 62 and the second drive member 62 can return to their initial positions by themselves. The structure is simple, which is conducive to reducing the manufacturing cost of the vehicle and also conducive to improving the user experience.

[0073] It should be noted that the initial positions of the first driving member 62 and the second driving member 62 refer to the positions of the first driving member 62 and the second driving member 62 when the vehicle is not performing a steering action.

[0074] Please continue reading Figure 3 and Figure 4In some embodiments, the drive wheel 64 is movably disposed on the housing 65, and the drive wheel 64 has a first position and a second position. In the first position, the drive wheel 64 is in transmission connection with the first drive member 62 and the second drive member 63, and in the second position, the drive wheel 64 is disengaged from the first drive member 62 and the second drive member 63. Specifically, when the drive wheel 64 is in the first position, the drive wheel 64 is in transmission connection with the first drive member 62 and the second drive member 63, thereby enabling the steering operation of the vehicle. When the drive wheel 64 is in the second position, the drive wheel 64 cannot transmit power to the first drive member 62 and the second drive member 63, thereby avoiding affecting the steering action of the vehicle when the vehicle is in normal driving state. The drive wheel 64 can move in the height direction of the vehicle, the length direction of the vehicle, and other directions, which are not limited in this application.

[0075] Please continue reading Figure 3 and Figure 4 In some embodiments, the drive wheel 64 is movably connected to the housing 65 along the length of the vehicle. For example, the drive wheel 64 can be connected to the housing 65 via a drive rod, which is movably connected to the housing 65 along the length of the vehicle. The connection between the drive rod and the housing 65 can be a snap-fit ​​connection.

[0076] In this way, the overall volume of the drive assembly 6 can be prevented from being too large, thereby making the vehicle structure layout more reasonable, and also making it easier for users to operate, thereby helping to improve the user experience.

[0077] See also Figure 3 and Figure 5 , Figure 5 A partial stereoscopic diagram of a steer-by-wire system provided in some embodiments of the present application. In some embodiments, the steer-by-wire system 100 may further include a fixed bracket 7. The fixed bracket 7 is disposed on the subframe 1. The fixed bracket 7 has a fixed notch 71. The fixed notch 71 is located at the end of the fixed bracket 7 away from the subframe 1. A locking member 72 is provided in the fixed notch 71, and the first flexible cable 4 passes through the locking member 72. The fixed bracket 7 and the subframe 1 can be connected by welding, fastener connection, or the like. This facilitates the fixing of the first flexible cable 4, thereby facilitating improved assembly efficiency of the steer-by-wire system 100.

[0078] Exemplarily, the fixing bracket 7 can be formed in an "L" shape, and a portion of the fixing bracket 7 is connected to the subframe 1, which can improve the connection strength between the fixing bracket 7 and the subframe 1. The remaining portion of the fixing bracket 7 can extend in a direction away from the subframe 1. The locking member 72 is provided on the fixing notch 71, and the first flexible cable 4 can pass through the locking member 72 and be locked and fixed by the locking member 72.

[0079] It should be noted that the connection method between the second flexible cable 5 and the sub-frame 1 can be similar to the connection method between the first flexible cable 4 and the sub-frame 1, and will not be repeated here.

[0080] Please continue reading Figure 3 and Figure 5 In some embodiments, the steer-by-wire system 100 may further include a bolt fastener 8. The bolt fastener 8 is connected to the first steering knuckle 2. The outer peripheral wall of the bolt fastener 8 has a fixing groove, and one end of the first flexible cable 4 is disposed in the fixing groove. The bolt fastener 8 may be a stud bolt. One end of the bolt fastener 8 is connected to the first steering knuckle 2, and the first flexible cable 4 is then fixed in the fixing groove. The other end of the bolt fastener 8 is tightened by a nut, thereby completing the fixation of the first steering knuckle 2. This arrangement can reduce the difficulty of assembling the first flexible cable 4 and is low in cost, thereby helping to improve the assembly efficiency of the steer-by-wire system 100.

[0081] It should be noted that the connection method between the second flexible cable 5 and the second steering knuckle 3 may be similar to the connection method between the first flexible cable 4 and the first steering knuckle 2 , and will not be described in detail here.

[0082] The following describes the vehicles used in the implementation of this application.

[0083] The vehicle of the embodiment of the present application includes the aforementioned steer-by-wire system 100. This provides a mechanical backup for the vehicle's steer-by-wire system 100, thereby preventing the steer-by-wire system 100 from losing control of the vehicle's direction in the event of a power outage, unstable power supply, or electrical signal failure, thereby improving the safety and reliability of the vehicle's driving.

[0084] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0085] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A steer-by-wire system, characterized in that: The steer-by-wire system comprises: First steering knuckle; a second steering knuckle, the second steering knuckle being located on one side of the first steering knuckle; a first flexible cable connected to the first steering knuckle; a second flexible cable connected to the second steering knuckle; a drive assembly comprising a first drive member and a second drive member, wherein the first drive member is connected to the first flexible cable and is used to tighten or loosen the first flexible cable, and the second drive member is connected to the second flexible cable and is used to tighten or loosen the second flexible cable; The drive assembly further includes a third drive member, the third drive member being transmission-connected to both the first drive member and the second drive member; The third driving member is a driving wheel, which is located between the first driving member and the second driving member and is in transmission connection with the first driving member and the second driving member. The first flexible cable is wound around the first driving member, and the second flexible cable is wound around the second driving member. The driving wheel is movably arranged and has a first position and a second position. In the first position, the driving wheel is in transmission connection with the first driving member and the second driving member. In the second position, the driving wheel is disengaged from the first driving member and the second driving member.

2. The steer-by-wire system according to claim 1, wherein: The drive assembly also includes a shell, which has a accommodating space, a first mounting hole and a second mounting hole. The drive wheel, the first drive member and the second drive member are arranged in the accommodating space. The drive wheel is slidably connected to the shell. The first mounting hole and the second mounting hole are both connected to the accommodating space. The first flexible cable passes through the first mounting hole, and the second flexible cable passes through the second mounting hole.

3. The steer-by-wire system according to claim 2, wherein: The driving assembly further includes a first torsion spring, one end of which is connected to the driving wheel, and the other end of which is connected to the housing.

4. The steer-by-wire system according to claim 2, wherein: The driving wheel is movably arranged on the housing, and the driving wheel has a first position and a second position. In the first position, the driving wheel is in transmission connection with the first driving member and the second driving member. In the second position, the driving wheel is disengaged from the first driving member and the second driving member.

5. The steer-by-wire system according to claim 1, wherein: The driving assembly further includes a control member, which is disposed on one side of the driving wheel and is used to control the rotation of the driving wheel.

6. The steer-by-wire system according to claim 1, wherein: The steer-by-wire system further includes a bolt fastener connected to the first steering knuckle. An outer peripheral wall of the bolt fastener has a fixing groove, and one end of the first flexible cable is disposed in the fixing groove.

7. A vehicle, characterized in that: The vehicle comprises a steer-by-wire system according to any one of claims 1-6.

8. The vehicle according to claim 7, characterized in that The vehicle also includes a subframe, the first steering knuckle is arranged at one end of the subframe in the length direction, and the second steering knuckle is arranged at the other end of the subframe in the length direction, the drive assembly is located on one side of the subframe, the first flexible cable includes a first connecting section and a second connecting section, the two ends of the first connecting section are respectively connected to the first steering knuckle and the subframe, the first driving member is connected to the first connecting section through the second connecting section, and is used to tighten or loosen the second connecting section.

9. The vehicle according to claim 8, characterized in that The steer-by-wire system further includes a fixing bracket, which is disposed on the subframe and has a fixing notch. The fixing notch is located at an end of the fixing bracket away from the subframe, and the first flexible cable passes through the fixing notch.

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