Steering-by-wire column assembly and vehicle

Abstract

The utility model discloses a steer-by-wire column assembly and a vehicle. Comprising a tubular column body, a tubular column support, a connecting support and a straight-stroke electric actuating mechanism, and the tubular column body, the tubular column support, the connecting support and the straight-stroke electric actuating mechanism form a four-connecting-rod structure. Wherein the tubular column support is equivalent to a rack in the four-connecting-rod structure and used for being connected with a whole vehicle, the tubular column support and the connecting support are equivalent to a pair of rockers in the four-connecting-rod structure, the straight-stroke electric executing mechanism is equivalent to a connecting rod in the four-connecting-rod structure, a motor of the straight-stroke electric executing mechanism provides power, and the tubular column body is electrically adjusted. The overall connection of the structural system is reliable, the overall rigidity of the structural system is guaranteed, and the comfort of a driver and passengers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering columns, in particular to a wire-controlled steering column assembly and a vehicle. Background Art

[0002] The steering column assembly is used to obtain the overall steering control of the car according to the driver's wishes. As people's requirements for driving entertainment and riding comfort increase, the steering column assembly, as a component directly perceived by the human body, has become an indicator of increasing concern for its ergonomics and noise and vibration performance. In order to meet the driving pleasure requirements of different customers, more and more models of steering column bodies have angle and height adjustable mechanisms. This adjustment mechanism can adjust the position of the steering wheel within a certain range to meet the driving habits of different people.

[0003] With the development of automobile intelligence, electric adjustment function has gradually become a trend in automobile travel solutions, and the stability and quality of products have also become the main orientation, so the research on intelligent and high-performance product structure has become the market orientation. Especially the upgrade of the steering system, which gives customers a strong intuitive upgrade experience. In the traditional automobile development and design process, when the natural frequency of the steering system does not meet the requirements, the natural mode is often improved by increasing the diameter of the steering column, thickening the structural parts of the steering column, and changing the layout of the hard points of the steering column connection. However, it will increase the mass of the structural parts, making the natural frequency characteristics of the steering system worse, causing the steering system to easily resonate with the body and chassis system, affecting driving comfort and safety, which brings new challenges to the control of steering system vibration and noise. Utility Model Content

[0004] In view of some of the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a wire-controlled steering column assembly and a vehicle, which are used to realize electric adjustment of the steering column body, while improving the mode of the steering column assembly, that is, increasing the solid vibration frequency, thereby improving the comfort of the driver and passengers.

[0005] In order to achieve the above-mentioned object and other related objects, the utility model provides a wire-controlled steering column assembly, comprising:

[0006] Pipe column support;

[0007] A pipe column body, a first end of the pipe column support and a first end of the pipe column body are movably connected;

[0008] A connecting bracket, wherein a first connecting structure on a first side of the connecting bracket is rotatably connected to a second end of the pipe column bracket opposite to the first end, and a second connecting structure on the first side of the connecting bracket is rotatably connected to a second end of the pipe column body opposite to the first end; and

[0009] A linear electric actuator comprises a transmission assembly and a motor connected to the transmission assembly, the transmission assembly comprises a movable part and a connecting part which are relatively arranged and connected, the movable part is movably connected to a second side connecting structure of a connecting bracket which is opposite to its first side, and the connecting part is correspondingly rotationally connected to a column body.

[0010] In one embodiment of the present invention, the column body includes an upper column body and a lower column body coaxially connected, the lower column body and the first end of the column bracket are correspondingly movably connected, and the upper column body and the second end of the connecting bracket are correspondingly rotatably connected.

[0011] In one embodiment of the utility model, a lower shaft seat is provided at one end of the lower tube column away from the upper tube column and perpendicular to its axial direction, and a pair of slide grooves are provided at the first end of the tube column bracket along its width direction, a pair of bushings are cooperated in the pair of slide grooves, and a pair of pin shafts are cooperated and inserted in the pair of bushings, and each bushing is a square structure.

[0012] In one embodiment of the utility model, an upper shaft seat is provided at one end of the upper tube column away from the lower tube column and perpendicular to its axial direction, and a pin shaft rotatably connects the second connecting structure of the connecting bracket to the upper shaft seat of the upper tube column; a bracket shaft seat is provided at the second end of the tube column bracket along the width direction, and a pin shaft rotatably connects the first connecting structure of the connecting bracket to the bracket shaft seat of the tube column bracket.

[0013] In one embodiment of the utility model, the connecting bracket includes a bending plate and a mounting support plate, the bending plate includes a first bending portion and a second bending portion; the rotationally extended end of the second bending portion is provided with a reinforcing plate arranged opposite to the first bending portion, and the two ends of the reinforcing plate along the axial direction of the column body respectively form a first connecting structure on the first side of the connecting bracket and a second connecting structure on the first side with the corresponding first bending portion;

[0014] The mounting support plate and the extended end portion of the first bent portion are arranged relatively parallel and fixedly connected to form a second side connection structure of the connection bracket.

[0015] In one embodiment of the utility model, the first connection structure of the first side of the connection bracket and the bracket shaft seat of the column bracket are rotatably connected via a pin; the second connection structure on the first side and the upper shaft seat of the upper column body are rotatably connected via a pin.

[0016] In one embodiment of the utility model, the movable part of the transmission assembly is a ball screw mechanism, and the motor output shaft is connected to the screw of the ball screw mechanism to drive it to rotate. The raised outer edges on the opposite sides of the nut seat of the ball screw mechanism and on each side are arc-shaped, so that the raised outer edges on each side are matched to be arranged in the axial hole of the second side connecting structure of the connecting bracket; when the screw rotates under the drive of the motor, the nut seat moves along it, thereby driving the connecting bracket to rotate.

[0017] In one embodiment of the present invention, a screw stopper is provided at the rotationally extended end of the screw of the ball screw mechanism.

[0018] In one embodiment of the utility model, a middle shaft seat is provided on the column body between the upper shaft seat and the lower shaft seat, and the middle shaft seat is provided on the outer cylindrical surface of the column body away from the column bracket; the connecting end of the lead screw is coaxially connected to the output shaft of the motor, and the connecting end of the lead screw is correspondingly provided with a connecting shaft plate, and the connecting shaft plate is the connecting part of the transmission assembly, and the long shaft pin passes through the connecting shaft plate to rotatably connect one end of the linear electric actuator away from the movable part to the middle shaft seat of the column body.

[0019] In order to achieve the above-mentioned object and other related objects, the utility model provides a vehicle, including the above-mentioned wire-controlled steering column assembly.

[0020] The beneficial technical effects of the utility model include at least:

[0021] The utility model discloses a wire-controlled steering column assembly, comprising a column body, a column bracket, a connecting bracket and a linear electric actuator. The column body, the column bracket, the connecting bracket and the linear electric actuator form a four-bar structure. Among them, the column bracket is equivalent to the frame in the four-bar structure, which is used to connect with the whole vehicle, the column bracket and the connecting bracket are equivalent to a pair of rockers in the four-bar structure, the linear electric actuator is equivalent to the connecting rod in the four-bar structure, and the motor of the linear electric actuator provides power to realize the electric adjustment of the column body, and also makes the overall connection of the above-mentioned structural system reliable and the overall rigidity of the structural system is guaranteed. At the same time, one end of the column body of the utility model is a pure rotation pair of the rotation center, that is, the rotation connection of the upper shaft seat and the second end of the connecting bracket, and the connection between the other end of the column body and the column bracket is a rotating and sliding integrated connection structure, that is, the matching and connection structure between the lower shaft seat, the slide groove and the bushing. The bushing has an outer square and inner circle structure, with a pin shaft inserted in the bushing, and the bushing slidingly fitted on the slide groove, realizing the sliding and rotation functions. Its rotational connection is a surface fit, which further improves the connection stiffness of the structural system and increases the strength of the structural system, thereby achieving the effect of improving the modal of the wire-controlled steering column assembly, that is, increasing the natural vibration frequency and improving the comfort of the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1It is a three-dimensional schematic diagram of a wire-controlled steering column assembly in one embodiment of the utility model;

[0024] Figure 2 for Figure 1 3D exploded view of

[0025] Figure 3 It is a three-dimensional schematic diagram of a bushing in one embodiment of the utility model;

[0026] Figure 4 The figure is a schematic diagram of the principle of the wire-controlled steering column assembly of the present utility model.

[0027] Component number description: column bracket 1, first end 11 of column bracket 1, slide groove 111, second end 12 of column bracket 1, bracket shaft seat 13, column body 2, first end 21 of column body 2, second end 22 of column body 2, upper column body 23, lower column body 24, lower shaft seat 25, upper shaft seat 26, middle shaft seat 27, connecting bracket 3, first connecting structure 31 on the first side, second connecting structure 32 on the first side, second side connecting structure 33, shaft hole 331, bending plate 3 4. First bending portion 341, second bending portion 342, reinforcing plate 343, mounting support plate 35, linear electric actuator 4, motor 41, transmission assembly 42, nut seat 421, screw 422, screw limiter 423, connecting portion 424, bushing 51, inner hole 511, outer side surface 512, pin shaft 52, long shaft pin 53, integrated rotating and sliding structure 61, first rotating sub-structure 62, second rotating sub-structure 63, third rotating sub-structure 63, fourth rotating sub-structure 64. DETAILED DESCRIPTION

[0028] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0029] See also Figures 1 to 4. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0030] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present invention can also be used to implement the present invention.

[0031] It should be noted that the mode is the natural vibration characteristic of the structural system, that is, the mode is the inherent characteristic of the structure itself, usually including frequency and vibration mode. Modal analysis is a process that describes the structure based on the inherent characteristics of the structure, including frequency, damping and modal vibration mode, these dynamic properties. When the structural system is stimulated by the outside world and moves, it will vibrate naturally at a specific frequency. This specific frequency is called the natural frequency of the structure. Usually, a structure has many natural frequencies. The natural frequency has nothing to do with the external excitation and is an inherent property of the structure. Regardless of whether the structure is stimulated by the outside world, the natural frequency of the structure exists. It is just that when there is external excitation, the structure vibrates according to the natural frequency. The natural frequency of the structure is only affected by the stiffness distribution and mass distribution, and the influence of damping on the natural frequency is very limited. 1 degree of freedom corresponds to the first-order natural frequency (or the first-order mode). The degree of freedom refers to the minimum number of independent coordinates required to determine the movement of the structure in space. A particle has three translational degrees of freedom, and a rigid body has six degrees of freedom, which are three translational degrees of freedom and three rotational degrees of freedom. We can think that any continuous structure has infinite degrees of freedom, but all these structures can be roughly regarded as composed of a finite number of micro-rigid bodies (for example, only a finite number of units can be divided in finite element analysis), so the continuous structure can also be considered to have a finite number of degrees of freedom. The number of degrees of freedom determines the dimensions of the analytical mass matrix, stiffness matrix, and damping matrix, and also determines the theoretically existing natural frequency order and modal vibration shape order.

[0032] Usually, only mass and stiffness affect the natural frequency, and any other factors will ultimately affect these two factors. As the mass increases, the natural frequency of the structure will inevitably decrease; as the stiffness increases, the natural frequency of the structure will inevitably increase. However, if the stiffness continues to increase, the natural frequency will not increase indefinitely. In the modal calculation of the steering system, the up and down vibration mode and the left and right vibration mode of the steering wheel are two important modes in vibration, noise and ride comfort performance.

[0033] See also Figure 1-Figure 2The utility model provides a wire-controlled steering column assembly, including a column bracket 1, a column body 2, a connecting bracket 3 and a linear electric actuator 4. The first end 11 of the column bracket 1 is movably connected to the first end 21 of the column body 2; the first connecting structure 31 on the first side of the connecting bracket 3 is rotatably connected to the second end 12 of the column bracket 1 opposite to the first end 11, and the second connecting structure 32 on the first side of the connecting bracket 3 is rotatably connected to the second end 22 of the column body 2 opposite to the first end 21; the linear electric actuator 4 includes a transmission assembly 42 and a motor 41 connected to the connecting transmission assembly 42, the transmission assembly 42 includes a movable part and a connecting part 424 arranged and connected relatively, the movable part is movably connected to the second side connecting structure 33 of the connecting bracket 3 opposite to the first side thereof, and the connecting part 424 is correspondingly rotatably connected to the column body 2.

[0034] The column bracket 1, the column body 2, the connecting bracket 3 and the linear electric actuator 4 and their connection are equivalent to a four-bar structure. The column bracket 1 is used to connect with the whole vehicle, and the steering wheel is installed at one end of the column body 2. The motor 41 drives the nut seat 421 to move on the lead screw 422. The nut seat 421 can rotate in the shaft hole 331 of the second side connecting structure 33 while moving linearly, thereby driving the connecting bracket 3 to rotate, so that the first end 21 of the column body 2 rotates-slides in an integrated manner relative to the first end 11 of the column bracket 1, and the second end 22 of the column body 2 rotates relative to the second connecting structure 32 on the first side of the connecting bracket 3, realizing the electric adjustment of the column body 2, that is, the electric adjustment function of the steering wheel position. At the same time, the connection of the above-mentioned structural system is reliable and the integrity is improved, which improves the overall rigidity of the structural system and ensures the comfort of the driver.

[0035] In one embodiment of the utility model, the column body 2 includes an upper column body 23 and a lower column body 24 connected coaxially, the lower column body 24 and the first end 11 of the column bracket 1 are correspondingly movably connected, and the upper column body 23 and the second end of the connecting bracket 3 are correspondingly rotatably connected. Further, a lower shaft seat 25 is provided at one end of the lower column body 24 away from the upper column body 23 and perpendicular to its axial direction, and a pair of slide grooves 111 are provided at the first end 11 of the column bracket 1 along its width direction, a pair of bushings 51 are matched and arranged in the pair of slide grooves 111, and a pair of pins 52 are matched and inserted in the pair of bushings 51, so that the column bracket 1 and the lower column body 24 can rotate relative to each other, and because the bushings 51 can slide along the corresponding slide grooves 111, relative linear movement between the column bracket 1 and the lower column body 24 can be achieved. An upper shaft seat 26 is provided at one end of the upper column body 23 away from the lower column body 24 and perpendicular to its axial direction, and a pin shaft 52 rotatably connects the second connecting structure 32 of the connecting bracket 3 to the upper shaft seat 26 of the upper column body 23; a bracket shaft seat 13 is provided at the second end 12 of the column bracket 1 along the width direction, and a pin shaft 52 rotatably connects the first connecting structure 31 of the connecting bracket 3 to the bracket shaft seat 13 of the column bracket 1.

[0036] In one embodiment of the utility model, the connecting bracket 3 includes a bending plate 34 and a mounting support plate 35, and the bending plate includes a first bending portion 341 and a second bending portion 342. The second bending portion 342 is provided with a reinforcing plate 343 arranged opposite to the first bending portion 341 at the rotationally extended end thereof, and the two ends of the reinforcing plate 343 along the axial direction of the column body 2 respectively form a first connecting structure 31 on the first side of the connecting bracket 3 and a second connecting structure 32 on the first side thereof with the corresponding first bending portion 341. The mounting support plate 35 and the rotationally extended end of the first bending portion 341 are arranged relatively parallel and fixedly connected to form a second side connecting structure 33 of the connecting bracket 3.

[0037] The first connection structure 31 of the first side of the connection bracket 3 and the bracket shaft seat 13 of the column bracket 1 are rotatably connected via a pin 52 ; the second connection structure 32 of the first side and the upper shaft seat 26 of the upper column body 23 are rotatably connected via a pin 52 .

[0038] In one embodiment of the utility model, the movable part of the transmission assembly 42 is a ball screw mechanism, and a screw stopper 423 is provided at the rotation end of the screw 422 of the ball screw mechanism. The output shaft of the motor 41 is connected to the screw 422 of the ball screw mechanism to drive it to rotate. The protruding outer edges of the nut seat 421 of the ball screw mechanism on the opposite sides and each side are arc-shaped, so that the protruding outer edges on each side are matched to be arranged in the shaft hole 331 of the second side connection structure 33 of the connection bracket 3; when the screw 422 rotates under the drive of the motor 41, the nut seat 421 moves along it, thereby driving the connection bracket 3 to rotate. The second connection structure 32 on the first side of the connection bracket 3 drives the column body 1 to rotate. Furthermore, a middle shaft seat 27 is provided on the column body 2 between the upper shaft seat 26 and the lower shaft seat 25, and the middle shaft seat 27 is provided on the outer cylindrical surface of the column body 2 away from the column bracket 1; the connecting end of the screw 422 is coaxially connected to the output shaft of the motor 41, and the connecting end of the screw 422 is correspondingly provided with a connecting shaft plate, and the connecting shaft plate is the connecting part 424 of the transmission assembly 42, and the long shaft pin 53 passes through the connecting shaft plate to rotatably connect the end of the linear electric actuator 4 away from the movable part to the middle shaft seat 27 of the column body 2.

[0039] In one embodiment of the present invention, in order to achieve the above-mentioned purpose and other related purposes, a vehicle is provided, including the above-mentioned wire-controlled steering column assembly. A control unit for controlling the motor 41 can be configured to realize the signal sending of wire-controlled steering and the simulation of the steering wheel feel torque, and the motor 41 provides power to realize the wire-controlled column adjustment function.

[0040] See Figure 3 Each bushing 51 is a cubic structure, the pin 52 is inserted in the inner hole 511 of the bushing 51, and the bushing 51 is slidably mounted on the slide groove 111, that is, the outer side surface 512 of the bushing 51 is in sliding contact with the slide groove 111. While realizing the sliding-rotation pair function, the rotation connection is a surface fit, which improves the rigidity and strength of the connection, thereby achieving the effect of improving the modal of the wire-controlled steering column assembly.

[0041] In summary, see Figure 4The utility model discloses a wire-controlled steering column assembly, comprising a column body 2, a column bracket 1, a connecting bracket 3 and a linear electric actuator 4. The column bracket 1, the column body 2, the connecting bracket 3 and the linear electric actuator 4 and their connection are equivalent to a four-bar structure. The column bracket 1 is a frame in the four-bar structure, which is used to connect with the whole vehicle. The column body 2 and the connecting bracket 3 are equivalent to a pair of remote rods, and the linear electric actuator 4 is equivalent to a connecting rod. The connection between the first end 11 of the column bracket 1 and the first end 21 of the column body 2 is a rotating and sliding integrated structure 61, and the connection between the second end 12 of the column bracket 1 and the first connecting structure 31 on the first side of the connecting bracket 3 is a first rotating pair structure 62. The connection between the connecting portion 424 of the linear electric actuator 4 and the column body 2 is a second rotating pair structure 63, and the connection between the nut seat 421 of the linear electric actuator 4 and the second side connecting structure 33 of the connecting bracket 3 is a third rotating pair structure 64. At the same time, in order to meet the arrangement requirements of the column body 2, the second end 22 of the column body 2 and the second connection structure 32 of the first side of the connection bracket 3 are connected to form a fourth rotational auxiliary structure 65. The connection of the above structural system is reliable and the overall rigidity is improved. In addition, the connection between the first end 11 of the column bracket 1 and the first end 21 of the column body 2 is a rotation-sliding integrated structure 61, which realizes the sliding and rotation functions. The rotation connection is a surface fit, which further improves the rigidity and strength of the connection, thereby achieving the effect of improving the mode of the wire-controlled steering column assembly, that is, the natural frequency of the wire-controlled steering column assembly is improved.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A wire-controlled steering column assembly, characterized in that: include: Pipe column support (1); A pipe column body (2), wherein the first end (11) of the pipe column support (1) and the first end (21) of the pipe column body (2) are movably connected; A connecting bracket (3), wherein a first connecting structure (31) on a first side of the connecting bracket (3) is rotatably connected to a second end (12) of the pipe column bracket (1) opposite to the first end (11), and a second connecting structure (32) on the first side of the connecting bracket (3) is rotatably connected to a second end (22) of the pipe column body (2) opposite to the first end (21); as well as A linear electric actuator (4), the linear electric actuator (4) comprising a transmission assembly (42) and a motor (41) connected to the transmission assembly (42), the transmission assembly (42) comprising a movable portion and a connecting portion (424) arranged and connected relative to each other, the movable portion being movably connected to a second side connecting structure (33) of the connecting bracket (3) opposite to the first side thereof, and the connecting portion (424) being correspondingly rotatably connected to the column body (2).

2. The wire-controlled steering column assembly according to claim 1, characterized in that: The column body (2) comprises an upper column body (23) and a lower column body (24) which are coaxially connected, the lower column body (24) and the first end (11) of the column bracket (1) are correspondingly movably connected, and the upper column body (23) and the second end of the connecting bracket (3) are correspondingly rotationally connected.

3. The wire-controlled steering column assembly according to claim 2, characterized in that: A lower shaft seat (25) is provided at one end of the lower tube column (24) away from the upper tube column (23) and perpendicular to its axial direction. The first end (11) of the tube column bracket (1) is provided with a pair of slide grooves (111) along its width direction. A pair of bushings (51) are cooperatedly arranged in the pair of slide grooves (111). A pair of pin shafts (52) are cooperatedly inserted in the pair of bushings (51). Each bushing (51) is a cubic structure.

4. The steer-by-wire column assembly according to claim 3, characterized in that: An upper shaft seat (26) is provided at one end of the upper tube column (23) away from the lower tube column (24) and perpendicular to its axial direction, and the pin shaft (52) rotatably connects the second connection structure (32) of the connecting bracket (3) to the upper shaft seat (26) of the upper tube column (23); the second end (12) of the tube column bracket (1) is provided with a bracket shaft seat (13) along the width direction, and the pin shaft (52) rotatably connects the first connection structure (31) of the connecting bracket (3) to the bracket shaft seat (13) of the tube column bracket (1).

5. The steer-by-wire column assembly according to claim 4, characterized in that: The connecting bracket (3) comprises a bending plate (34) and a mounting support plate (35), wherein the bending plate (34) comprises a first bending portion (341) and a second bending portion (342); the rotating end of the second bending portion (342) is provided with a reinforcing plate (343) arranged opposite to the first bending portion (341), and the two ends of the reinforcing plate (343) along the axial direction of the column body (2) respectively form the first connecting structure (31) on the first side of the connecting bracket (3) and the second connecting structure (32) on the first side with the corresponding first bending portion (341); the rotating ends of the mounting support plate (35) and the first bending portion (341) are arranged relatively parallel and fixedly connected to form the second side connecting structure (33) of the connecting bracket (3).

6. The steer-by-wire column assembly according to claim 5, characterized in that: The first connecting structure (31) on the first side of the connecting bracket (3) and the bracket shaft seat (13) of the column bracket (1) are rotationally connected via the pin shaft (52); the second connecting structure (32) on the first side and the upper shaft seat (26) of the upper column body (23) are rotationally connected via the pin shaft (52).

7. The steer-by-wire column assembly according to claim 6, characterized in that: The movable part of the transmission assembly (42) is a ball screw mechanism, the output shaft of the motor (41) is connected to the screw (422) of the ball screw mechanism to drive it to rotate, and the raised outer edges of the opposite sides of the nut seat (421) of the ball screw mechanism and each side are arc-shaped, so that the raised outer edges on each side are matched to be arranged in the shaft hole (331) of the second side connection structure (33) of the connecting bracket (3); when the screw (422) rotates under the drive of the motor (41), the nut seat (421) moves along it, thereby driving the connecting bracket (3) to rotate.

8. The steer-by-wire column assembly according to claim 7, characterized in that: A screw stopper (423) is provided at the rotationally extended end of the screw (422) of the ball screw mechanism.

9. The steer-by-wire column assembly according to claim 8, characterized in that: A middle shaft seat (27) is provided on the column body (2) between the upper shaft seat (26) and the lower shaft seat (25), and the middle shaft seat (27) is provided on the outer cylindrical surface of the column body (2) away from the column bracket (1); the output shaft of the motor (41) is coaxially connected to the connecting end of the lead screw (422), and the connecting end of the lead screw (422) is correspondingly provided with a connecting shaft plate, and the connecting shaft plate is the connecting part (424) of the transmission assembly (42), and a long shaft pin (53) passes through the connecting shaft plate to rotatably connect the end of the linear electric actuator (4) away from the movable part to the middle shaft seat (27) of the column body (2).

10. A vehicle, characterized in that: The invention comprises the wire-controlled steering column assembly as described in any one of claims 1 to 9.

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