Steering column, steering system and vehicle

Abstract

The utility model discloses a steering column, a steering system and a vehicle. The steering column comprises an input piece and a steering column, one end of the input piece is connected to the transmission assembly; the transmission assembly can rotate around the fixed shaft; and the damping piece is connected between the transmission assembly and the fixed shaft, so that when the transmission assembly rotates around the fixed shaft, the damping piece generates damping force to limit continuous rotation of the transmission assembly. The internal space structure of the steering column is large, a transmission assembly, a fixing shaft and a damping piece are arranged, and the damping piece is connected between the transmission assembly and the fixing shaft, so that when the transmission assembly rotates around the fixing shaft, the damping piece generates damping force to limit continuous rotation of the transmission assembly, and therefore when a motor of the steering column breaks down and cannot provide hand power, the steering column can be driven to rotate continuously. The damping piece provides necessary hand power, and usability and safety of the vehicle are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a steering column, a steering system and a vehicle. Background Art

[0002] In related technologies, the steer-by-wire system consists of only two structures: a steering column and a steering gear, with no intermediate shaft connecting the two. Therefore, its layout is more diversified and more space is available in the vehicle cabin.

[0003] However, the existing steering column also has significant defects: after the steering column motor fails, the steering column motor cannot output torque and the active return function cannot work. Novice users may not be able to judge the current steering wheel and wheel steering angles, and oversteering and other problems may occur during the user's manual steering wheel return process. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a steering column in which a damping member can provide the necessary manual force when the steering column motor fails to provide manual force, thereby greatly improving the usability and safety of the vehicle.

[0005] The utility model further proposes a steering system.

[0006] The utility model further provides a vehicle.

[0007] According to the steering column of the present invention, it includes: an input member; a transmission assembly, one end of the input member is connected to the transmission assembly; a fixed shaft, the transmission assembly can rotate around the fixed shaft; and a damping member, the damping member is connected between the transmission assembly and the fixed shaft, so that when the transmission assembly rotates around the fixed shaft, the damping member generates a damping force to limit the continued rotation of the transmission assembly.

[0008] According to the steering column of the present invention, the large internal space structure of the steering column is utilized to set a transmission assembly, a fixed shaft and a damping member. The damping member is connected between the transmission assembly and the fixed shaft, so that when the transmission assembly rotates around the fixed shaft, the damping member generates a damping force to limit the continued rotation of the transmission assembly. In this way, when the steering column motor fails and cannot provide manual force, the damping member can provide the necessary manual force, thereby greatly improving the usability and safety of the vehicle.

[0009] In some examples of the present invention, the damping member is configured as a spring member, and the spring member is wound around the fixed shaft.

[0010] In some examples of the present invention, a first connecting portion is provided on the inner wall of the transmission assembly, a second connecting portion is provided on the outer wall of the fixed shaft, and both ends of the damping member are respectively connected to the first connecting portion and the second connecting portion.

[0011] In some examples of the present invention, the transmission assembly includes: a first transmission member and a second transmission member, one end of the input member is connected to the first transmission member, the first transmission member and the second transmission member are in transmission cooperation, and the damping member is connected between the second transmission member and the fixed shaft.

[0012] In some examples of the present invention, the first transmission member is configured as a first helical gear, the second transmission member is configured as a second helical gear, and the first helical gear is meshed with the second helical gear.

[0013] In some examples of the present invention, an opening is provided on a side of the second bevel gear facing the input member, and the first bevel gear is disposed in the opening.

[0014] In some examples of the present invention, the steering column further includes: a housing, the transmission assembly is disposed in the housing, and one end of the fixed shaft is fixed to the bottom of the housing.

[0015] In some examples of the present invention, the steering column further includes: a bearing, wherein the bearing is disposed around an outer circumference of the input member.

[0016] According to the steering system of the present invention, it includes: a steering wheel; a steering gear; a steering motor, the steering gear is electrically connected to the steering motor; the steering column mentioned above, the steering wheel is connected to the other end of the input member, and the steering column is electrically connected to the steering gear.

[0017] The vehicle according to the present invention includes: the steering system described above.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 1 is a schematic structural diagram of a steering column according to an embodiment of the present utility model;

[0021] Figure 2 It is a partial structural schematic diagram of a steering column according to an embodiment of the present utility model.

[0022] Reference numerals:

[0023] 1. Steering column;

[0024] 10. Input member; 20. Transmission assembly; 200. First connecting portion; 201. First transmission member; 202. Second transmission member; 203. Opening; 30. Fixed shaft; 300. Second connecting portion; 40. Damping member; 50. Housing; 60. Bearing. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0026] Reference below Figure 1 and Figure 2 A steering column 1 according to an embodiment of the present invention is described.

[0027] like Figure 1 and Figure 2 As shown, a steering column 1 according to an embodiment of the present invention includes an input member 10, a transmission assembly 20, a fixed shaft 30, and a damping member 40. The input member 10 primarily functions as an input, the transmission assembly 20 primarily functions as a transmission, the fixed shaft 30 primarily supports other rotating components, and the damping member 40 primarily functions as an elastic deformation to transmit resistance, thereby providing a steering feel to the steering wheel. When the user turns the steering wheel back to center, a return torque is provided to help the user understand the current wheel angle and vehicle direction.

[0028] like Figure 1 and Figure 2 As shown, one end of the input member 10 is connected to the transmission assembly 20, and the transmission assembly 20 can rotate around the fixed shaft 30. The damping member 40 is connected between the transmission assembly 20 and the fixed shaft 30, so that when the transmission assembly 20 rotates around the fixed shaft 30, the damping member 40 generates a damping force to limit the continued rotation of the transmission assembly 20.

[0029] One end of the input member 10 is connected to the transmission assembly 20, so that the input member 10 can drive the transmission assembly 20 to move, and the transmission assembly 20 can rotate around the fixed shaft 30. There is no connection between the transmission assembly 20 and the fixed shaft 30, and the transmission assembly 20 can rotate freely on the fixed shaft 30. The damping member 40 is connected between the transmission assembly 20 and the fixed shaft 30, so that when the transmission assembly 20 rotates around the fixed shaft 30, the damping member 40 generates a damping force to limit the continued rotation of the transmission assembly 20. The transmission assembly 20 and the fixed shaft 30 are connected. There is a damping member 40. When the transmission assembly 20 rotates about the fixed shaft 30, it can drive the damping member 40 to stretch or compress. At this time, the damping member 40 generates a damping force. Since the fixed shaft 30 is fixed, the damping force generated by the damping member 40 can limit the continued rotation of the transmission assembly 20. Therefore, when the steering column motor fails and cannot provide manual force, the damping member 40 can provide the necessary manual force and provide the user with a return torque to help the user understand the current wheel angle and vehicle direction, greatly improving the usability and safety of the vehicle. It should be noted that after the vehicle is powered on, the steering column 1 is a normally closed mechanism. When the steering system is functioning normally, the friction compensation, damping compensation and other functions of the steering system enhance the overall steering feel of the steering system. When the steering column motor fails and cannot provide manual force, the steering column 1 provides the steering feel and return torque for the steering system.

[0030] Therefore, by utilizing the large internal space structure of the steering column 1, a transmission assembly 20, a fixed shaft 30 and a damping member 40 are provided. The damping member 40 is connected between the transmission assembly 20 and the fixed shaft 30, so that when the transmission assembly 20 rotates around the fixed shaft 30, the damping member 40 generates a damping force to limit the continued rotation of the transmission assembly 20. In this way, when the steering column motor fails and cannot provide manual force, the necessary manual force can be provided by the damping member 40, thereby greatly improving the availability and safety of the vehicle.

[0031] Specifically, if Figure 1 and Figure 2 As shown, the damping member 40 is constructed as a spring member, which is wound around the fixed shaft 30. The spring member mainly generates elastic force. Setting the damping member 40 as a spring member is more suitable for actual working conditions. The spring member is wound around the fixed shaft 30, connected between the transmission assembly 20 and the fixed shaft 30. When the transmission assembly 20 rotates around the fixed shaft 30, it can drive the spring member to stretch or compress. The spring member generates a damping force, limiting the rotation of the transmission assembly 20. Therefore, when the steering column motor fails and cannot provide manual force, the spring member can provide the necessary manual force, giving the steering wheel a steering feel, providing the user with a return torque to help the user understand the current wheel angle and vehicle direction, greatly improving the usability and safety of the vehicle. The spring member can be replaced with wear-resistant and heat-resistant materials.

[0032] Among them, such as Figure 2As shown, the inner wall of the transmission assembly 20 is provided with a first connecting portion 200, the outer wall of the fixed shaft 30 is provided with a second connecting portion 300, and both ends of the spring member are connected to the first connecting portion 200 and the second connecting portion 300 respectively. The first connection part 200 and the second connection part 300 can both play a connecting role. The inner wall of the transmission assembly 20 and the outer wall of the fixed shaft 30 are respectively provided with the first connection part 200 and the second connection part 300. The two ends of the spring member are respectively connected to the first connection part 200 and the second connection part 300, so that the spring member is connected between the transmission assembly 20 and the fixed shaft 30. In this way, when the transmission assembly 20 rotates around the fixed shaft 30, it can drive the damping member 40 to stretch or compress. The damping member 40 generates a damping force to limit the rotation of the transmission assembly 20. Therefore, when the steering column motor fails and cannot provide hand force, the damping member 40 can provide the necessary hand force. Because the steering wheel is connected to the input member 10, this can bring steering feel to the steering wheel, provide the user with a return torque to help the user grasp the current wheel angle and vehicle direction, and greatly improve the usability and safety of the vehicle.

[0033] In addition, if Figure 1 As shown, the transmission assembly 20 includes: a first transmission member 201 and a second transmission member 202, one end of the input member 10 is connected to the first transmission member 201, the first transmission member 201 and the second transmission member 202 are in transmission cooperation, and the damping member 40 is connected between the second transmission member 202 and the fixed shaft 30. The first transmission member 201 and the second transmission member 202 are both components of the transmission assembly 20 and can both play a transmission role. One end of the input member 10 is connected to the first transmission member 201, so that the input member 10 can drive the first transmission member 201 to move. The first transmission member 201 and the second transmission member 202 cooperate in transmission. The first transmission member 201 drives the second transmission member 202 to move, so that the second transmission member 202 can rotate around the fixed axis 30. The damping member 40 is connected between the second transmission member 202 and the fixed axis 30. When the second transmission member 202 rotates around the fixed axis 30, it can drive the damping member 40 to stretch or compress. The damping member 40 generates a damping force to limit the rotation of the second transmission member 202, that is, the transmission assembly 20. Therefore, when the steering column motor fails and cannot provide hand force, the damping member 40 can provide the necessary hand force, giving the steering wheel a steering feel, and providing the user with a return torque to help the user grasp the current wheel angle and vehicle direction, thereby greatly improving the vehicle's usability and safety.

[0034] Of course, if Figure 1As shown, the first transmission member 201 is constructed as a first helical gear, and the second transmission member 202 is constructed as a second helical gear, with the first helical gear meshing with the second helical gear. Helical gears offer advantages such as smooth transmission, low noise, and a compact structure. Constructing the first transmission member 201 as the first helical gear and the second transmission member 202 as the second helical gear better conforms to actual operating conditions. The first helical gear meshes with the second helical gear, allowing the input member 10 to drive the first helical gear to move. The first helical gear and the second helical gear then engage, driving the second helical gear to rotate about the fixed shaft 30. The first and second helical gears can be replaced with heat-resistant and wear-resistant materials.

[0035] Further, if Figure 1 As shown, an opening 203 is provided on the side of the second helical gear facing the input member 10, and the first helical gear is disposed within the opening 203. The opening 203 primarily serves to provide installation space. The opening 203 is provided on the side of the second helical gear facing the input member 10, and the first helical gear is disposed within the opening 203. In other words, the installation space is provided on the side of the second helical gear facing the input member 10, and the first helical gear can be disposed within the installation space. This allows for the rational use of the space on the side of the second helical gear facing the input member 10, reducing space occupancy and thereby resolving spatial layout issues associated with the steering column 1.

[0036] In addition, Figure 1 As shown, the steering column 1 further includes a housing 50, a transmission assembly 20 disposed within the housing 50, and one end of a fixed shaft 30 fixed to the bottom of the housing 50. The housing 50 primarily protects internal components and houses other components. The transmission assembly 20 is disposed within the housing 50, which has an installation space. This allows for efficient utilization of the space within the housing 50, reducing space occupancy and thereby addressing the spatial layout issues of the steering column 1. One end of the fixed shaft 30 is fixed to the bottom of the housing 50, and the fixed shaft 30 is fixedly connected to the bottom of the housing 50. It should be noted that one end of the fixed shaft 30 can be fixed to the bottom of the housing 50 by welding. The end of the fixed shaft 30 and the bottom of the housing 50 can be welded together using a dedicated welding machine. This results in a smooth, dimensionally precise weld, a simple and elegant structure, and a secure and reliable connection between the fixed shaft 30 and the housing 50.

[0037] It should be noted that if Figure 1As shown, the steering column 1 further includes a bearing 60, which is disposed around the outer periphery of the input member 10. The bearing 60 primarily supports the mechanical rotating body, reduces the friction coefficient during its movement, and ensures its rotational accuracy. The bearing 60 is disposed around the outer periphery of the input member 10, thereby supporting the input member 10, reducing the friction coefficient during its movement, and ensuring its rotational accuracy.

[0038] According to an embodiment of the present invention, a steering system comprises a steering wheel, a steering gear, and a steering motor. The steering gear is electrically connected to the steering motor, and the steering column 1 described in the above embodiment is connected to the other end of the input member 10. The steering column 1 is electrically connected to the steering gear. The steering wheel primarily controls the vehicle's direction of travel. The steering gear is the actuator of the steering system, primarily responsible for reducing transmission speed, increasing steering force, and changing the direction of force transmission. The steering motor helps the driver control the vehicle's steering direction, improving driving safety and comfort. The steering gear is electrically connected to the steering motor, the steering wheel is connected to the other end of the input member 10, and the steering column 1 is electrically connected to the steering gear. Specifically, the steering column 1 is connected to the steering wheel and uses a steering angle sensor and a speed sensor to obtain the steering wheel angle and speed, controlling the output of the tactile motor and achieving tactile simulation. The steering column 1 is connected to the steering gear via wires to achieve communication. The steering column 1 transmits an angle request signal to the steering gear via the wires. The steering gear, acting as the actuator of the steering system, controls the output of the steering motor upon receiving the request signal, causing the wheels to rotate, thereby achieving vehicle steering.

[0039] A vehicle according to an embodiment of the present invention includes: the steering system described in the above embodiment.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0041] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact via another feature between them. In the description of the present invention, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0042] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steering column (1), characterized in that: include: Input (10); a transmission assembly (20), one end of the input member (10) being connected to the transmission assembly (20); A fixed shaft (30), the transmission assembly (20) being rotatable about the fixed shaft (30); A damping member (40) is connected between the transmission assembly (20) and the fixed shaft (30) so that when the transmission assembly (20) rotates around the fixed shaft (30), the damping member (40) generates a damping force to limit the continued rotation of the transmission assembly (20).

2. The steering column (1) according to claim 1, characterized in that The damping member (40) is constructed as a spring member, and the spring member is wound around the fixed shaft (30).

3. The steering column (1) according to claim 1, characterized in that The inner wall of the transmission assembly (20) is provided with a first connecting portion (200), the outer wall of the fixed shaft (30) is provided with a second connecting portion (300), and both ends of the damping member (40) are respectively connected to the first connecting portion (200) and the second connecting portion (300).

4. The steering column (1) according to claim 1, characterized in that The transmission assembly (20) comprises: a first transmission member (201) and a second transmission member (202); one end of the input member (10) is connected to the first transmission member (201); the first transmission member (201) and the second transmission member (202) are in transmission cooperation; and the damping member (40) is connected between the second transmission member (202) and the fixed shaft (30).

5. The steering column (1) according to claim 4, characterized in that The first transmission member (201) is configured as a first helical gear, the second transmission member (202) is configured as a second helical gear, and the first helical gear is meshed with the second helical gear.

6. The steering column (1) according to claim 5, characterized in that An opening (203) is provided on a side of the second helical gear facing the input member (10), and the first helical gear is arranged in the opening (203).

7. The steering column (1) according to claim 1, characterized in that Also includes: A housing (50), the transmission assembly (20) is disposed in the housing (50), and one end of the fixed shaft (30) is fixed to the bottom of the housing (50).

8. The steering column (1) according to claim 1, characterized in that Also includes: A bearing (60) is disposed around the outer circumference of the input member (10).

9. A steering system, characterized in that: include: steering wheel; Steering gear; A steering motor, wherein the steering gear is electrically connected to the steering motor; The steering column (1) according to any one of claims 1 to 8, wherein the steering wheel is connected to the other end of the input member (10), and the steering column (1) is electrically connected to the steering gear.

10. A vehicle, characterized in that: include: The steering system as claimed in claim 9.

Images