Cylinder pre-pressing device for steer-by-wire system, steer-by-wire system and vehicle

Abstract

The utility model discloses a kind of column cylinder pre-pressing devices for steer-by-wire system, steer-by-wire system and vehicle, steer-by-wire system includes first steering column and second steering column, column cylinder pre-pressing device includes: first positioning part and second positioning part, first positioning part and second positioning part are oppositely arranged along first direction, first positioning part is formed with first positioning structure on the side facing second positioning part, second positioning part is formed with second positioning structure on the side facing first positioning part, first positioning structure and second positioning structure limit cooperation, to limit the relative movement of first positioning part and second positioning part in second direction, first direction and second direction are perpendicular. Therefore, by first positioning structure and second positioning structure limit cooperation, axial adjustment motor of steer-by-wire system can reduce the risk that combination switch will rotate and steering wheel swing when carrying out axial electric adjustment, to facilitate the driving experience of vehicle is improved.

Description

Technical Field

[0001] This utility model relates to the field of column preloading technology, and in particular to a column preloading device for a steer-by-wire system, a steer-by-wire system, and a vehicle. Background Technology

[0002] In related technologies, the vehicle's steer-by-wire system includes a steering column, which comprises an upper steering column and a lower steering column. When the axial adjustment motor of the steer-by-wire system performs axial electric adjustment, the upper steering column rotates and swings, which causes the combination switch on the upper steering column to rotate and also causes the steering wheel to swing, thus affecting the vehicle's driving experience.

[0003] Reason for the rotation of the combination switch: The axial adjustment motor is located on one side of the steering column. When the axial adjustment motor is performing axial adjustment, the upper steering column rotates under the action of the motor and the lateral force of the screw.

[0004] Reason for steering wheel sway: The axial adjustment motor is located on one side of the steering column. There is a gap between the upper and lower steering columns on the side where the axial adjustment motor applies force. When the axial direction is reversed, the upper steering column, along with the steering wheel, will sway within this gap. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a column preload device for a steer-by-wire system, which can reduce the risk of combination switch rotation and steering wheel wobbling, thereby improving the driving experience.

[0006] This utility model further proposes a steer-by-wire system.

[0007] This utility model further proposes a vehicle.

[0008] According to an embodiment of the present invention, a column preloading device for a steer-by-wire system is provided. The steer-by-wire system includes a first steering column and a second steering column. The column preloading device includes: The first positioning part and the second positioning part are arranged opposite to each other along the first direction. The first positioning part is used to fix the first steering column. A first positioning structure is formed on the side of the first positioning part facing the second positioning part, and a second positioning structure is formed on the side of the second positioning part facing the first positioning part. The first positioning structure and the second positioning structure are matched to limit the relative movement of the first positioning part and the second positioning part in the second direction. The first direction and the second direction are perpendicular.

[0009] According to the embodiment of the present invention, the column preload device for a steer-by-wire system, through the limiting cooperation of the first positioning structure and the second positioning structure, can reduce the risk of the combination switch rotating and the steering wheel wobbling when the axial adjustment motor of the steer-by-wire system performs axial electric adjustment, thereby improving the driving experience of the vehicle.

[0010] In some examples of this utility model, the first positioning structure is one of the positioning groove and the positioning protrusion, and the second positioning structure is the other of the positioning groove and the positioning protrusion, with at least a portion of the positioning protrusion fitted into the positioning groove.

[0011] In some examples of this utility model, the positioning groove has two groove limiting sidewalls, which are arranged opposite to each other along the second direction, and both groove limiting sidewalls are in contact with the positioning protrusion.

[0012] In some examples of this utility model, along the second direction, the positioning protrusion forms two protrusion limiting sidewalls. Along the second direction, the two protrusion limiting sidewalls are respectively located on both sides of the positioning protrusion. The two protrusion limiting sidewalls and the two groove limiting sidewalls correspond one-to-one, and the protrusion limiting sidewalls and the corresponding groove limiting sidewalls are in surface contact.

[0013] In some examples of this utility model, both the convex limiting sidewall and the groove limiting sidewall are planar, and the convex limiting sidewall and the corresponding groove limiting sidewall are parallel; and / or From the positioning groove to the positioning protrusion, the two groove limiting sidewalls are inclined away from each other, and the two protrusion limiting sidewalls are inclined away from each other.

[0014] In some examples of this utility model, the first positioning structure is a positioning protrusion, the second positioning structure is a positioning groove, and the positioning groove penetrates the second positioning structure along a third direction, with the first direction, the second direction and the third direction being perpendicular to each other.

[0015] In some examples of this utility model, the column preloading device further includes a pre-tightening part, which is located on the side of the second positioning part away from the first positioning part. The pre-tightening part is adapted to press against the second positioning part and is used to fix it to the second steering column.

[0016] In some examples of this utility model, the pre-tightening part includes a fixing structure and an elastic structure, the elastic structure being located between the fixing structure and the second positioning part, and the fixing structure being used to fix it to the second steering column.

[0017] The steer-by-wire system according to an embodiment of the present invention includes: First steering column and second steering column; The column preloading device is the same as the column preloading device for the steer-by-wire system described above, with the first positioning part fixed to the first steering column.

[0018] The vehicle according to an embodiment of the present invention includes the above-described steer-by-wire system.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a steer-by-wire system according to an embodiment of the present utility model; Figure 2 This is another schematic diagram of the steer-by-wire system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a column preloading device according to an embodiment of the present utility model; Figure 4 This is an assembly diagram of the second positioning part and the pre-tightening part according to an embodiment of the present utility model; Figure 5 This is a cross-sectional view of the second positioning part and the pre-tightening part after assembly according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the second positioning part according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the second positioning part according to an embodiment of the present utility model from another angle; Figure 8 This is a side view of the second positioning part according to an embodiment of the present utility model; Figure 9 This is a schematic diagram of the fixing structure according to an embodiment of the present utility model; Figure 10 This is a schematic diagram of the fixing structure according to an embodiment of the present utility model from another angle; Figure 11 This is a schematic diagram of the elastic structure according to an embodiment of the present utility model; Figure 12 This is a schematic diagram of the first positioning part according to an embodiment of the present utility model; Figure 13 This is a schematic diagram of the first positioning part according to an embodiment of the present utility model from another angle.

[0021] Figure label: Column preloading device 100; First positioning part 10; First positioning structure 11; Positioning protrusion 111; Protrusion limiting sidewall 112; Second positioning part 20; second positioning structure 12; positioning groove 121; groove limiting sidewall 122; limiting post 13; weight reduction structure 14; Pre-tightening part 30; fixing structure 31; elastic structure 32; first gasket 33; second gasket 34; assembly groove 35; 200 steer-by-wire system; 201 first steering column; 202 second steering column; 203 axial adjustment motor; 204 screw. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] The following is for reference. Figures 1-13 This invention describes a column preload device 100 for a steer-by-wire system 200 according to an embodiment of the present invention. The steer-by-wire system 200 includes a first steering column 201 and a second steering column 202, one of which is an upper steering column, and the other is a lower steering column. This application uses the example of the first steering column 201 being the upper steering column and the second steering column 202 being the lower steering column for illustration. Figure 1 As shown, the second steering column 202 can be fitted onto the first steering column 201. Figure 1 As shown, the steer-by-wire system 200 also includes an axial adjustment motor 203 and a screw 204. The axial adjustment motor 203 and the screw 204 are disposed on the side of the second steering column 202. The axial adjustment motor 203 drives the first steering column 201 to move along the axial direction of the steering column by moving along the steering column axially through the screw 204, so as to realize the axial electric adjustment of the axial adjustment motor 203.

[0024] like Figures 1-5 As shown, the preloading device 100 of the column tube according to an embodiment of the present utility model includes: a first positioning part 10 and a second positioning part 20. The first positioning part 10 and the second positioning part 20 are arranged opposite to each other along a first direction. The first positioning part 10 is used to fix to the first steering column 201. A first positioning structure 11 is formed on the side of the first positioning part 10 facing the second positioning part 20. A second positioning structure 12 is formed on the side of the second positioning part 20 facing the first positioning part 10. The first positioning structure 11 and the second positioning structure 12 are mutually limiting to restrict the relative movement of the first positioning part 10 and the second positioning part 20 in a second direction. The first direction and the second direction are perpendicular.

[0025] The column preloading device 100 includes a first positioning part 10 and a second positioning part 20. The first positioning part 10 and the second positioning part 20 are arranged opposite to each other along a first direction, such as... Figure 3 As shown, the first direction is Figure 3 The first direction is perpendicular to the axial direction of the first steering column 201. The first positioning part 10 is used to fix itself to the first steering column 201. The first positioning part 10 can be fixed to the first steering column 201 by welding, snap-fitting, riveting, etc., and can be fixed to the outer wall of the first steering column 201. Along the first direction, the second positioning part 20 is located on the side of the first positioning part 10 opposite to the first steering column 201, and the second positioning part 20 can be made of nylon, plastic, or other materials.

[0026] A first positioning structure 11 is formed on the side of the first positioning part 10 facing the second positioning part 20, and a second positioning structure 12 is formed on the side of the second positioning part 20 facing the first positioning part 10. The first positioning structure 11 and the second positioning structure 12 are mutually limiting and engaged along a second direction to restrict the relative movement of the first positioning part 10 and the second positioning part 20 in the second direction. The first direction and the second direction are perpendicular, and the second direction intersects the axial direction of the first steering column 201. This application will describe the application using the example of the second direction being perpendicular to the axial direction of the first steering column 201. Figure 3 As shown, the second direction is Figure 3 in the Y direction.

[0027] For example, the first positioning structure 11 includes two first protrusions spaced apart along the second direction, and the second positioning structure 12 includes a third protrusion extending between the two first protrusions and in contact with both first protrusions, thereby limiting the relative movement of the first positioning part 10 and the second positioning part 20 along the second direction.

[0028] It should be noted that if the column preload device 100 of this application is not set, when the axial adjustment motor 203 of the steer-by-wire system 200 performs axial electric adjustment, the first steering column 201 will rotate and the first steering column 201 will also swing in the second direction.

[0029] In this application, after the column preload device 100 is installed in the steer-by-wire system 200, the first positioning part 10 is fixed to the outer wall of the first steering column 201, and the second positioning structure 12 is located on the side of the first positioning part 10 away from the first steering column 201. As an example, the second positioning structure 12 can be fixed to the second steering column 202. As another example, the second positioning structure 12 is fixedly installed between the first positioning part 10 and the second steering column 202 by press fitting. When the axial adjustment motor 203 of the steer-by-wire system 200 performs axial electric adjustment, the first positioning structure 11 and the second positioning structure 12 limit the movement of the first positioning structure 11 relative to the second positioning structure 12 in the second direction. This limits the swinging of the first steering column 201 in the second direction and also limits the rotation of the first steering column 201. This reduces the risk of the combination switch rotating and the steering wheel swinging, thereby improving the driving experience of the vehicle.

[0030] Therefore, through the limiting cooperation of the first positioning structure 11 and the second positioning structure 12, the axial adjustment motor 203 of the steer-by-wire system 200 can reduce the risk of the combination switch rotating and the steering wheel wobbling when performing axial electric adjustment, thereby improving the driving experience of the vehicle.

[0031] In some embodiments of this utility model, such as Figure 3 As shown, the first positioning structure 11 is one of the positioning groove 121 and the positioning protrusion 111, and the second positioning structure 12 is the other of the positioning groove 121 and the positioning protrusion 111. At least a portion of the positioning protrusion 111 is fitted into the positioning groove 121.

[0032] Wherein, when the first positioning structure 11 is a positioning groove 121, the second positioning structure 12 is a positioning protrusion 111; when the first positioning structure 11 is a positioning protrusion 111, the second positioning structure 12 is a positioning groove 121. This application uses the example of the first positioning structure 11 being a positioning protrusion 111 and the second positioning structure 12 being a positioning groove 121 for explanation. The positioning groove 121 is recessed into the second positioning part 20, and the positioning protrusion 111 protrudes into the second positioning part 20. Part of the structure of the positioning protrusion 111 extends into the positioning groove 121, or the entire structure of the positioning protrusion 111 extends into the positioning groove 121. After the positioning protrusion 111 extends into the positioning groove 121, the two sidewalls of the positioning groove 121 along the second direction contact and limit the positioning protrusion 111, thereby achieving the effect of restricting the relative movement of the first positioning part 10 and the second positioning part 20 in the second direction. By setting the first positioning structure 11 and the second positioning structure 12 as positioning protrusion 111 and positioning groove 121 respectively, it is beneficial to simplify the structure of the first positioning structure 11 and the second positioning structure 12, facilitate the production and manufacturing of the first positioning part 10 and the second positioning part 20, and also facilitate the assembly of the first positioning structure 11 and the second positioning structure 12.

[0033] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the positioning groove 121 has two groove limiting sidewalls 122, which are arranged opposite to each other along the second direction, and both groove limiting sidewalls 122 are in contact with the positioning protrusion 111.

[0034] The positioning groove 121 has two groove limiting sidewalls 122, which are arranged opposite to each other along the second direction. The two groove limiting sidewalls 122 can have the same shape. After the positioning protrusion 111 extends into the positioning groove 121, the surface of the positioning protrusion 111 facing the groove limiting sidewall 122 contacts and limits the groove limiting sidewall 122, thereby achieving the effect of limiting along the second direction, so that the first positioning part 10 and the second positioning part 20 meet the working requirements.

[0035] In some embodiments of this utility model, such as Figure 3 and Figure 12 As shown, along the second direction, the positioning protrusion 111 forms two protrusion limiting sidewalls 112. Along the second direction, the two protrusion limiting sidewalls 112 are located on both sides of the positioning protrusion 111. The two protrusion limiting sidewalls 112 and the two groove limiting sidewalls 122 correspond one-to-one, and the protrusion limiting sidewalls 112 and the corresponding groove limiting sidewalls 122 are in surface contact.

[0036] The outer surface of the positioning protrusion 111 has two protrusion limiting sidewalls 112, which are arranged along a second direction. One protrusion limiting sidewall 112 is located on one side of the positioning protrusion 111, and the other protrusion limiting sidewall 112 is located on the other side of the positioning protrusion 111. The two protrusion limiting sidewalls 112 and the two groove limiting sidewalls 122 are arranged in a one-to-one correspondence along the second direction. The protrusion limiting sidewalls 112 and the corresponding groove limiting sidewalls 122 are in surface contact. This arrangement helps to increase the contact area between the protrusion limiting sidewalls 112 and the corresponding groove limiting sidewalls 122, which can reliably limit the protrusion limiting sidewalls 112 and the corresponding groove limiting sidewalls 122. Furthermore, it helps to make the first positioning part 10 and the second positioning part 20 bear force evenly, thereby reducing the risk of stress concentration in the first positioning part 10 and the second positioning part 20, and further reducing the risk of deformation of the first positioning part 10 and the second positioning part 20.

[0037] In some embodiments of this utility model, such as Figure 3 , Figure 7 and Figure 12 As shown, both the protrusion limiting sidewall 112 and the groove limiting sidewall 122 are planar, and the protrusion limiting sidewall 112 and the corresponding groove limiting sidewall 122 are parallel; and / or from the positioning groove 121 to the positioning protrusion 111, the two groove limiting sidewalls 122 are inclined away from each other, and the two protrusion limiting sidewalls 112 are inclined away from each other.

[0038] As one example, both the protrusion limiting sidewall 112 and the groove limiting sidewall 122 are planar, and the protrusion limiting sidewall 112 and the corresponding groove limiting sidewall 122 are parallel. As another example, in the direction from the positioning groove 121 to the positioning protrusion 111, the two groove limiting sidewalls 122 extend obliquely away from each other, and the two protrusion limiting sidewalls 112 extend obliquely away from each other. As yet another example, both the protrusion limiting sidewall 112 and the groove limiting sidewall 122 are planar, and the protrusion limiting sidewall 112 and the corresponding groove limiting sidewall 122 are parallel. In the direction from the positioning groove 121 to the positioning protrusion 111, the two groove limiting sidewalls 122 extend obliquely away from each other, and the two protrusion limiting sidewalls 112 extend obliquely away from each other.

[0039] By having both the convex limiting sidewall 112 and the groove limiting sidewall 122 as planar surfaces, and with the convex limiting sidewall 112 and the corresponding groove limiting sidewall 122 being parallel, it is more advantageous to increase the contact area between the convex limiting sidewall 112 and the corresponding groove limiting sidewall 122. This allows the convex limiting sidewall 112 and the corresponding groove limiting sidewall 122 to be more reliably positioned. Furthermore, it is more advantageous to ensure that the first positioning part 10 and the second positioning part 20 are subjected to uniform force, thereby further reducing the risk of stress concentration in the first positioning part 10 and the second positioning part 20, and further reducing the risk of deformation in the first positioning part 10 and the second positioning part 20. Furthermore, by tilting the two groove limiting sidewalls 122 away from each other and the two protrusion limiting sidewalls 112 away from each other, the shapes of the groove limiting sidewalls 122 and the protrusion limiting sidewalls 112 can be adapted to each other, which is beneficial to make the protrusion limiting sidewalls 112 and the corresponding groove limiting sidewalls 122 in surface contact. At the same time, it can also increase the opening end area of ​​the positioning groove 121. During the assembly process of the positioning protrusion 111 into the positioning groove 121, after the positioning protrusion 111 contacts the groove limiting sidewall 122, the groove limiting sidewall 122 can guide the positioning protrusion 111, thereby facilitating the assembly of the positioning protrusion 111 into the positioning groove 121, which in turn helps to improve the assembly efficiency of the first positioning part 10 and the second positioning part 20.

[0040] In some embodiments of this utility model, such as Figure 3 As shown, the first positioning structure 11 is a positioning protrusion 111, the second positioning structure 12 is a positioning groove 121, and the positioning groove 121 penetrates the second positioning structure 12 along a third direction, with the first direction, the second direction and the third direction being perpendicular to each other.

[0041] The first positioning structure 11 is a positioning protrusion 111, and the second positioning structure 12 is a positioning groove 121. The positioning groove 121 penetrates the second positioning structure 12 along a third direction. Figure 3 In the Z direction, in other words, the third direction is parallel to the axial direction of the first steering column 201, and the first direction, the second direction, and the third direction are perpendicular to each other. The positioning groove 121 passes through the second positioning structure 12 along the third direction, and the positioning protrusion 111 is assembled in the positioning groove 121. When the first steering column 201 moves along its axial direction, the first steering column 201 drives the first positioning part 10 to move synchronously. The positioning protrusion 111 will not interfere with the second positioning structure 12, and the second positioning part 20 will not restrict the movement of the first steering column 201, thereby achieving the effect that the first steering column 201 can move along its axial direction, meeting the vehicle's usage requirements.

[0042] In some embodiments of this utility model, such as Figure 3As shown, the column preloading device 100 further includes a pre-tightening part 30, which is located on the side of the second positioning part 20 away from the first positioning part 10. The pre-tightening part 30 is adapted to press against the second positioning part 20 and is used to fix it to the second steering column 202.

[0043] The column preloading device 100 may further include a preload portion 30, located along the first direction on the side of the second positioning portion 20 opposite to the first positioning portion 10. The preload portion 30 can be assembled to the second steering column 202. The preload portion 30 can be fixed to the second steering column 202 by screwing or snapping. The preload portion 30 and the second steering column 202 are detachably connected. After the preload portion 30 is assembled to the second steering column 202, it presses against the second positioning portion 20, so that the second positioning portion 20 reliably presses against the first positioning portion 10, thereby reliably limiting the engagement of the first positioning structure 11 and the second positioning structure 12. When the first steering column 201 is subjected to circumferential or lateral forces, it can restrict the rotation or sway of the first steering column 201.

[0044] In some embodiments of this utility model, such as Figures 3-5 As shown, the pre-tightening part 30 includes a fixing structure 31 and an elastic structure 32. The elastic structure 32 is located between the fixing structure 31 and the second positioning part 20. The fixing structure 31 is used to fix to the second steering column 202.

[0045] The pre-tightening part 30 may include a fixing structure 31 and an elastic structure 32. The elastic structure 32 may be made of a metal material. For example, the elastic structure 32 may be made of aluminum, iron, or other metal materials, but this invention is not limited to this. The elastic structure 32 may also be made of other elastic materials such as rubber, as long as the elastic structure 32 is elastic. Along the first direction, the elastic structure 32 is located between the fixing structure 31 and the second positioning part 20, and the elastic structure 32 can be pressed between the fixing structure 31 and the second positioning part 20. As an example, the fixing structure 31 can be fixed to the second steering column 202 by a snap-fit ​​method. As another example, the fixing structure 31 is a circular structure, and the outer peripheral wall of the fixing structure 31 has an external thread. The second steering column 202 has a threaded hole, and the fixing structure 31 is assembled into the threaded hole. By twisting the fixing structure 31, the fixing structure 31 can be disassembled and assembled, or the fixing structure 31 can be fixed to the second steering column 202. After the fixed structure 31 is fixed to the second steering column 202, the fixed structure 31 and the elastic structure 32 press against the second positioning part 20, so that the second positioning part 20 and the first positioning part 10 are reliably assembled. Furthermore, since the elastic structure 32 is elastic, it plays a buffering and energy-absorbing role, which helps to further reduce the risk of stress concentration in the first positioning part 10 and the second positioning part 20.

[0046] In some embodiments of this utility model, such as Figure 5 As shown, the pre-tightening part 30 may further include: a first gasket 33 and a second gasket 34. Along the first direction, the first gasket 33 is located between the elastic structure 32 and the second positioning part 20, and the first gasket 33 is in contact with both the elastic structure 32 and the second positioning part 20. The second gasket 34 is located between the elastic structure 32 and the fixing structure 31, and the second gasket 34 is in contact with both the elastic structure 32 and the fixing structure 31. The first gasket 33 and the second gasket 34 can provide support for the elastic structure 32. When the elastic structure 32 is made of metal material, it is beneficial to reduce the risk of damage to the fixing structure 31 and the second positioning part 20.

[0047] In some embodiments of this utility model, such as Figure 5 As shown, a mounting groove 35 is formed on the side of the fixed structure 31 facing the second positioning part 20. At least a portion of the structure of the second gasket 34 is mounted in the mounting groove 35. The mounting groove 35 can limit the second gasket 34, reduce the risk of the second gasket 34 shifting, and thus reliably mount the second gasket 34 between the elastic structure 32 and the fixed structure 31.

[0048] In some embodiments of this utility model, such as Figure 5 and Figure 11 As shown, the elastic structure 32 is made of metal. The middle part of the elastic structure 32 protrudes towards the second gasket 34, and the protruding part of the elastic structure 32 contacts the second gasket 34. The circumferential edge of the elastic structure 32 contacts the first gasket 33. By protruding from the middle part of the elastic structure 32 towards the second gasket 34, the elastic structure 32 can have the ability to deform, thus meeting the usage requirements of the elastic structure 32.

[0049] In some embodiments of this utility model, such as Figure 5 and Figure 6 As shown, along the first direction, a limiting post 13 is formed on the side of the second positioning part 20 opposite to the first positioning part 10. The limiting post 13 extends along the first direction and passes through the elastic structure 32, the first gasket 33 and the second gasket 34. The limiting post 13 can limit the elastic structure 32, the first gasket 33 and the second gasket 34, reducing the risk of displacement of the elastic structure 32, the first gasket 33 and the second gasket 34.

[0050] In some embodiments of this utility model, such as Figure 6 As shown, the second positioning part 20 can be formed with a weight reduction structure 14. The weight reduction structure 14 can be a weight reduction groove, a weight reduction hole, or other structures. This arrangement is beneficial to reducing the weight of the column preloading device 100 and to the lightweight design of the column preloading device 100.

[0051] In some embodiments of this utility model, such as Figure 3 As shown, a first positioning part 10 and a plurality of second positioning parts 20 are assembled together, with the plurality of second positioning parts 20 arranged sequentially at intervals along a third direction. The second positioning parts 20 and the pre-tensioning parts 30 are assembled in a one-to-one correspondence. This arrangement can improve the limiting capability of the column preload device 100, further reduce the risk of the combination switch rotating and the steering wheel wobbling, and thus further improve the driving experience of the vehicle.

[0052] like Figures 1-13 As shown, the steer-by-wire system 200 according to an embodiment of the present invention includes: a first steering column 201 and a second steering column 202; a column preload device 100, wherein the column preload device 100 is the column preload device 100 for the steer-by-wire system 200 in the above embodiment, and a first positioning part 10 is fixed to the first steering column 201.

[0053] In this embodiment, the first steering column 201 is the same as the first steering column 201 described above, and the second steering column 202 is the same as the second steering column 202 described above. Through the limiting cooperation of the first positioning structure 11 and the second positioning structure 12, the axial adjustment motor 203 of the steer-by-wire system 200 can reduce the risk of the combination switch rotating and the steering wheel wobbling when performing axial electric adjustment, thereby improving the driving experience of the vehicle.

[0054] The vehicle according to an embodiment of the present invention includes the steer-by-wire system 200 described above. When the axial adjustment motor 203 of the steer-by-wire system 200 performs axial electric adjustment, it can reduce the risk of the combination switch rotating and the steering wheel wobbling, thereby improving the driving experience.

[0055] Other components of the steer-by-wire system 200 according to embodiments of the present invention, such as the structure of the steering column, are known to those skilled in the art and will not be described in detail here.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A column preloading device for a steer-by-wire system, characterized in that, The steer-by-wire system includes a first steering column and a second steering column, and the column preload device includes: A first positioning part and a second positioning part are arranged opposite to each other along a first direction. The first positioning part is used to fix the first steering column. A first positioning structure is formed on the side of the first positioning part facing the second positioning part, and a second positioning structure is formed on the side of the second positioning part facing the first positioning part. The first positioning structure and the second positioning structure are mutually limiting to restrict the relative movement of the first positioning part and the second positioning part in a second direction. The first direction and the second direction are perpendicular.

2. The column preloading device for a steer-by-wire system according to claim 1, characterized in that, The first positioning structure is one of the positioning groove and the positioning protrusion, and the second positioning structure is the other of the positioning groove and the positioning protrusion, wherein at least a portion of the positioning protrusion is fitted into the positioning groove.

3. The column preloading device for a steer-by-wire system according to claim 2, characterized in that, The positioning groove has two groove limiting sidewalls, which are arranged opposite to each other along the second direction, and both groove limiting sidewalls are in contact with the positioning protrusion.

4. The column preloading device for a steer-by-wire system according to claim 3, characterized in that, Along the second direction, the positioning protrusion forms two protrusion limiting sidewalls. Along the second direction, the two protrusion limiting sidewalls are respectively located on both sides of the positioning protrusion. The two protrusion limiting sidewalls and the two groove limiting sidewalls correspond one-to-one, and the protrusion limiting sidewalls and the corresponding groove limiting sidewalls are in surface contact.

5. The column preloading device for a steer-by-wire system according to claim 4, characterized in that, Both the protrusion limiting sidewall and the groove limiting sidewall are planar, and the protrusion limiting sidewall and the corresponding groove limiting sidewall are parallel; and / or From the positioning groove to the positioning protrusion, the two groove limiting sidewalls are inclined away from each other, and the two protrusion limiting sidewalls are inclined away from each other.

6. The column preloading device for a steer-by-wire system according to claim 2, characterized in that, The first positioning structure is the positioning protrusion, the second positioning structure is the positioning groove, and the positioning groove penetrates the second positioning structure along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

7. The column preloading device for a steer-by-wire system according to any one of claims 1-6, characterized in that, The column preloading device further includes a pre-tightening part, which is located on the side of the second positioning part away from the first positioning part. The pre-tightening part is adapted to press against the second positioning part and is used to fix it to the second steering column.

8. The column preloading device for a steer-by-wire system according to claim 7, characterized in that, The pre-tightening part includes a fixing structure and an elastic structure, wherein the elastic structure is located between the fixing structure and the second positioning part, and the fixing structure is used to fix it to the second steering column.

9. A steer-by-wire system, characterized in that, include: First steering column and second steering column; A column preloading device, wherein the column preloading device is a column preloading device for a steer-by-wire system according to any one of claims 1-8, wherein the first positioning part is fixed to the first steering column.

10. A vehicle, characterized in that, Including the steer-by-wire system according to claim 9.

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