Steering shaft assembly, steering column assembly, steering device and vehicle

Abstract

The utility model discloses a steering shaft assembly, a steering column assembly, a steering device and a vehicle, and the steering shaft assembly comprises a steering shaft which is provided with a connecting end, and the connecting end is suitable for being connected with a steering wheel; the locking structure is used for locking rotation of the steering shaft, and the locking structure is arranged at the end, away from the connecting end, of the steering shaft. According to the steering shaft assembly, the locking structure is arranged at the end, away from the connecting end, of the steering shaft, so that the distance between the locking structure and a steering wheel can be increased, buffering and absorption of the steering shaft to torsional force can be improved, impact of the torsional force to the locking structure can be reduced, the locking structure can be effectively prevented from being damaged, and the service life of the steering shaft assembly is prolonged. And the service life of the locking structure can be effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to a steering shaft component, a steering column assembly, a steering device and a vehicle. Background Art

[0002] In the existing vehicle steering system, the steering shaft is the key component connecting the steering wheel and the steering mechanism. It is responsible for converting the driver's steering operation into the action of the steering mechanism, thereby controlling the direction of the vehicle. In order to prevent the vehicle from being stolen, the vehicle steering wheel must be locked after the driver leaves the vehicle to prevent theft.

[0003] In the related art, the locking structure of the steering shaft is usually arranged at one end of the steering shaft close to the steering wheel, and the locking device cooperates with the locking structure on the steering shaft to achieve the locking of the steering shaft, thereby achieving the locking of the steering wheel. However, the locking structure is close to the steering wheel, and the locking structure directly bears the torque transmitted by the steering wheel. When impacted, the locking structure is easily damaged or fails, and the service life of the locking structure cannot be guaranteed. Utility Model Content

[0004] The first object of the utility model is to provide a new technical solution for a steering shaft assembly, which can at least solve the technical problem that the locking structure on the existing steering shaft is easily damaged.

[0005] The second object of the utility model is to provide a new technical solution for a steering column assembly.

[0006] The third object of the present invention is to provide a new technical solution for a steering device.

[0007] A fourth object of the present invention is to provide a new technical solution for a vehicle.

[0008] According to a first aspect of the utility model, a steering shaft assembly is provided, comprising: a steering shaft having a connecting end, the connecting end being suitable for connecting to a steering wheel; a locking structure, the locking structure being used to lock the rotation of the steering shaft, the locking structure being arranged at one end of the steering shaft away from the connecting end.

[0009] Optionally, the steering shaft includes: a steering upper shaft, which has a first end and a second end opposite to each other in the axial direction, and the first end of the steering upper shaft is formed as the connecting end; a steering lower shaft, which is movably arranged at the second end of the steering upper shaft in its axial direction, and the locking structure is arranged at an end of the steering lower shaft away from the connecting end.

[0010] Optionally, the locking structure is configured as an annular locking member, and the annular locking member is sleeved on the steering lower shaft.

[0011] Optionally, the annular locking member includes: a locking sleeve, the locking sleeve is sleeved on the steering lower shaft, the outer circumferential surface of the locking sleeve is provided with a plurality of locking grooves, the plurality of locking grooves are distributed along the circumference of the locking sleeve, and the locking grooves are suitable for cooperating with a locking tongue to lock the rotation of the steering shaft.

[0012] Optionally, the annular locking member also includes: a positioning ring, the positioning ring is sleeved on the steering lower shaft, the locking sleeve is sleeved on the positioning ring, a plurality of protrusions are provided on the outer periphery of the positioning ring, the plurality of protrusions are spaced apart and distributed along the circumference of the positioning ring, and the plurality of protrusions are respectively abutted against the inner wall surface of the locking sleeve.

[0013] Optionally, the protrusion is an elastic protrusion.

[0014] Optionally, a plurality of elastic ribs are provided on the outer circumferential surface of the locking sleeve, and the elastic ribs are distributed along the circumference of the locking sleeve, and the locking grooves are formed between adjacent elastic ribs.

[0015] Optionally, the positioning ring is provided with a notch to facilitate the positioning ring to be inserted into a predetermined position during installation.

[0016] Optionally, along the axial direction of the steering shaft, the length of the locking sleeve is greater than the length of the positioning ring.

[0017] Optionally, a shaft shoulder is provided on the outer peripheral surface of the steering shaft, and an end of the locking sleeve away from the connecting end is in contact with the shaft shoulder.

[0018] According to a second aspect of the utility model, a steering column assembly is provided, comprising any one of the steering shaft components described above.

[0019] Optionally, the steering column assembly also includes: a column cylinder, which is provided with an installation channel, the steering shaft is arranged in the installation channel, and the steering shaft is rotatable around its own axis; a locking device, which is arranged on the column cylinder, and is suitable for cooperating with the locking structure to limit the rotation of the steering shaft.

[0020] According to a third aspect of the utility model, a steering device is provided, comprising the steering column assembly described in any one of the above items.

[0021] According to a fourth aspect of the utility model, a vehicle is provided, comprising the above-mentioned steering device.

[0022] According to the steering shaft assembly of the utility model, by arranging the locking structure at the end of the steering shaft away from the connecting end, the distance between the locking structure and the steering wheel can be increased, thereby improving the buffering and absorption of torsional force by the steering shaft, reducing the impact of torsional force on the locking structure, and further effectively preventing the locking structure from being damaged, thereby effectively improving the service life of the locking structure.

[0023] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0025] Figure 1 It is a structural schematic diagram of a steering shaft assembly according to an embodiment of the utility model;

[0026] Figure 2 It is a structural schematic diagram of a locking structure of a steering shaft assembly according to an embodiment of the utility model;

[0027] Figure 3 It is a structural schematic diagram of a positioning ring of a steering shaft assembly according to an embodiment of the utility model;

[0028] Figure 4 It is a structural schematic diagram of a steering column assembly according to an embodiment of the utility model when a locking device is not installed;

[0029] Figure 5 is a cross-sectional view of a steering column assembly according to an embodiment of the utility model;

[0030] Figure 6 yes Figure 5 Enlarged view of the structure at center circle A.

[0031] Reference numerals:

[0032] Steering column assembly 100;

[0033] Steering shaft 10; steering upper shaft 11; connecting end 111; steering lower shaft 12; shaft shoulder 121; connecting section 122;

[0034] Locking structure 20; locking sleeve 21; locking groove 211; elastic rib 212; positioning ring 22; raised portion 221;

[0035] Column 30; annular boss 31; through hole 311; air avoidance hole 32; movable tube 33;

[0036] The bearing 40 is connected. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0038] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0039] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0040] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0041] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] The steering shaft assembly according to the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0043] like Figure 1 As shown, the steering shaft assembly according to the embodiment of the utility model includes: a steering shaft 10 and a locking structure 20 .

[0044] Specifically, the steering shaft 10 has a connecting end 111 suitable for connecting to a steering wheel. The locking structure 20 is used to lock the rotation of the steering shaft 10 . The locking structure 20 is disposed at one end of the steering shaft 10 away from the connecting end 111 .

[0045] In other words, if Figure 1 As shown, the steering shaft assembly according to the embodiment of the utility model mainly includes a steering shaft 10 and a locking structure 20, wherein the first end of the steering shaft 10 is formed as a connecting end 111 of the steering shaft 10, the connecting end 111 is suitable for connecting to the steering wheel of the vehicle, and the second end of the steering shaft 10 is used to transmit the torsional force exerted on the connecting end 111 to other components. The locking structure 20 is provided on the steering shaft 10, so that the locking structure 20 can cooperate with the locking part of the locking device to limit the rotation of the steering shaft 10.

[0046] Specifically, Figure 1As shown, the locking structure 20 is located at the end of the steering shaft 10 away from the connecting end 111 (for example, the outer peripheral surface of the end of the steering shaft 10 away from the connecting end 111), so that the distance between the locking structure 20 and the steering wheel can be increased, thereby improving the steering shaft 10's buffering and absorption of torsional force and reducing the impact of torsional force on the locking structure 20.

[0047] Therefore, according to the steering shaft assembly of the embodiment of the utility model, by setting the locking structure 20 at the end of the steering shaft 10 away from the connecting end 111, the distance between the locking structure 20 and the steering wheel can be increased, thereby improving the buffering and absorption of the steering shaft 10 to the torsional force, reducing the impact of the torsional force on the locking structure 20, and further effectively preventing the locking structure 20 from being damaged, thereby effectively improving the service life of the locking structure 20.

[0048] According to one embodiment of the utility model, the steering shaft 10 includes: a steering upper shaft 11 and a steering lower shaft 12, the steering upper shaft 11 has a first end and a second end opposite to each other in the axial direction, the first end of the steering upper shaft 11 is formed as a connecting end 111, the steering lower shaft 12 is movably arranged at the second end of the steering upper shaft 11 along its axial direction, and the locking structure 20 is arranged at one end of the steering lower shaft 12 away from the connecting end 111.

[0049] That is to say, Figure 1 As shown, the steering shaft 10 mainly includes an upper steering shaft 11 and a lower steering shaft 12, wherein the upper steering shaft 11 has a first end and a second end opposite to each other in the axial direction, the first end of the upper steering shaft 11 is a connecting end 111 of the steering shaft 10, the second end of the upper steering shaft 11 is provided with a connecting channel extending in its axial direction, and the first end of the lower steering shaft 12 is movably arranged in the connecting channel in its axial direction, for example, the outer peripheral surface of the first end of the lower steering shaft 12 is provided with a spline extending in the axial direction of the lower steering shaft 12, and the inner wall surface of the connecting channel is provided with a spline groove adapted to the spline, and the upper steering shaft 11 and the lower steering shaft 12 can be relatively movable in the axial direction of the upper steering shaft 11 through the cooperation of the spline and the spline groove, and the torsional force of the upper steering shaft 11 can be transmitted to the lower steering shaft 12; the locking structure 20 is provided at one end of the lower steering shaft 12 away from the connecting end 111 (for example, the outer peripheral surface of one end of the lower steering shaft 12 away from the connecting end 111), so as to ensure that there is a sufficiently large distance between the locking structure 20 and the steering wheel.

[0050] In this embodiment, the steering lower shaft 12 is movably connected to the steering upper shaft 11, so that the height of the steering shaft 10 can be adjusted, thereby making the height of the steering wheel adjustable.

[0051] In some optional examples of the present invention, the locking structure 20 is configured as an annular locking member, and the annular locking member is sleeved on the steering lower shaft 12 .

[0052] Specifically, the locking structure 20 is constructed as an annular locking member, so that the locking structure 20 can be installed in a sleeve manner at the end of the steering lower shaft 12 (i.e., the steering shaft 10) away from the connecting end 111. It is easy to install and easy to cooperate with the locking part of the locking device to limit the rotation of the steering shaft 10.

[0053] In some specific embodiments of the present invention, the annular locking member includes: a locking sleeve 21, the locking sleeve 21 is sleeved on the steering lower shaft 12, the outer peripheral surface of the locking sleeve 21 is provided with a plurality of locking grooves 211, the plurality of locking grooves 211 are distributed along the circumference of the locking sleeve 21, and the locking grooves 211 are suitable for cooperating with the locking tongue to lock the rotation of the steering shaft 10.

[0054] Specifically, Figure 1 and Figure 2 As shown, the annular locking member mainly includes an annular locking sleeve 21, which can be sleeved on the outer periphery of the end of the steering lower shaft 12 away from the connecting end 111, and the locking sleeve 21 and the steering shaft 10 can be interference fit together to achieve the connection and fixation between the two. The outer peripheral surface of the locking sleeve 21 can be provided with a plurality of locking grooves 211 evenly distributed along its circumference, and the plurality of locking grooves 211 can all cooperate with the locking tongue of the locking device, that is, the locking tongue of the locking device can extend into the locking groove 211 to limit the rotation of the steering shaft 10. The structure is simple and easy to produce.

[0055] According to one embodiment of the utility model, the annular locking member also includes: a positioning ring 22, the positioning ring 22 is sleeved on the steering lower shaft 11, the locking sleeve 21 is sleeved on the positioning ring 22, and the outer periphery of the positioning ring 22 is provided with a plurality of protrusions 221, the plurality of protrusions 221 are distributed and spaced apart along the circumference of the positioning ring 22, and the plurality of protrusions 221 are respectively in contact with the inner wall surface of the locking sleeve 21.

[0056] In other words, Figure 1 and Figure 3 As shown, the annular locking member may further include a positioning ring 22, which may be sleeved on the outer periphery of the end of the steering lower shaft 12 away from the connecting end 111, and the outer periphery of the positioning ring 22 may be provided with a plurality of protrusions 221 extending along its axial direction, and the plurality of protrusions 221 are evenly distributed along the circumference of the positioning ring 22, and the locking sleeve 21 is sleeved on the positioning ring 22, and the plurality of protrusions 221 provided on the positioning ring 22 are respectively abutted against the inner wall surface of the locking sleeve 21, and under the action of the protrusions 221, the inner wall surface of the positioning ring 22 may also be tightly fitted with the outer peripheral surface of the steering lower shaft 12, thereby realizing the connection and fixation of the locking sleeve 21, and ensuring the installation accuracy of the locking sleeve 21, without any welding and other parts, with a simple structure, and convenient for production and assembly.

[0057] In some specific embodiments of the present invention, the protrusion 221 is an elastic protrusion, which has good deformation ability, which is conducive to installing the locking sleeve 21 on the positioning ring 22. By ensuring that the locking sleeve 21 can receive uniform abutment force in all directions, the installation accuracy of the locking sleeve 21 can be guaranteed.

[0058] Furthermore, the protrusion 221 includes a plurality of sub-protrusions. In the present embodiment, the number of the sub-protrusions is two, and the two sub-protrusions are spaced apart and distributed along the circumference of the positioning ring 22 .

[0059] According to an embodiment of the present invention, a plurality of elastic ribs 212 are disposed on the outer circumferential surface of the locking sleeve 21 . The elastic ribs 212 are distributed along the circumference of the locking sleeve 21 , and locking grooves 211 are formed between adjacent elastic ribs 212 .

[0060] That is to say, Figure 1 and Figure 2 As shown, the outer peripheral surface of the locking sleeve 21 is provided with a plurality of ribs extending along its axial direction, and the ribs are configured as elastic ribs 212. For example, the locking sleeve 21 can be a plastic part, so as to ensure that the ribs are formed as elastic ribs 212. The plurality of elastic ribs 212 are distributed and spaced apart along the circumference of the locking sleeve 21, so that locking grooves 211 are formed between adjacent elastic ribs 212.

[0061] In this embodiment, when the force applied to the steering wheel is greater than the locking force (for example, 100N), the elastic rib 212 undergoes elastic deformation, and the locking tongue transitions to one or more locking grooves 211 to achieve locking again, thereby effectively avoiding damage to the locking sleeve 21 and achieving the locking function.

[0062] It should be noted that the specific material of the elastic rib 212 can be determined according to the required maximum locking force, which will not be described in detail in this embodiment.

[0063] In some specific embodiments of the present invention, the positioning ring 22 is provided with a notch so that the positioning ring 22 can be easily inserted into a predetermined position during installation.

[0064] In other words, the positioning ring 22 is a non-closed-loop structure, that is, the positioning ring 22 is provided with a notch running through the thickness direction thereof, the first end of the notch extends to the first end of the positioning ring 22, and the second end of the notch extends to the second end of the positioning ring 22. The positioning ring 22 can be sleeved on the steering lower shaft 12 through the notch, so that the positioning ring 22 does not need to be inserted from one end of the steering lower shaft 12, which is convenient for assembly. After the positioning ring 22 is sleeved on the steering lower shaft 12, the positioning ring 22 can be inserted between the locking sleeve 21 and the steering lower shaft 12, that is, the predetermined position, by press-fitting; and the notch provides a certain elastic deformation space for the positioning ring 22, so that even if a slight dimensional deviation is encountered during the press-fitting process, the positioning ring 22 can adapt to it through elastic deformation, so that the positioning ring 22 is convenient for inserting into the predetermined position; at the same time, the notch makes the positioning ring 22 applicable to steering shafts 10 of different diameters within a certain range, which can ensure that the positioning ring 22 is tightly fitted to the outer peripheral surface of the steering shaft 10.

[0065] Optionally, the positioning ring 22 is configured as a precision positioning ring, which can be purchased directly, thereby effectively reducing production costs.

[0066] According to an embodiment of the present invention, along the axial direction of the steering shaft 10 , the length of the locking sleeve 21 is greater than the length of the positioning ring 22 .

[0067] Specifically, Figure 1 As shown, the axial dimension of the locking sleeve 21 is larger than the axial dimension of the positioning ring 22 on the locking sleeve 21, which can ensure that there is enough matching space between the locking sleeve 21 and the locking device, and can enhance the stability and reliability of the locking function.

[0068] In some specific embodiments of the present invention, a shaft shoulder 121 is disposed on the outer circumference of the steering shaft 10 , and one end of the locking sleeve 21 away from the connecting end 111 is in contact with the shaft shoulder 121 .

[0069] That is to say, Figure 1 As shown, the outer peripheral surface of the end of the steering shaft 10 away from the connecting end 111 is provided with an annular shoulder portion 121, and the locking sleeve 21 is located on the side of the shoulder portion 121 close to the connecting end 111, and the locking sleeve 21 is fitted with the side of the shoulder portion 121 close to the connecting end 111, thereby ensuring the accuracy of the installation position of the locking sleeve 21.

[0070] Therefore, the installation position of the locking sleeve 21 can be positioned by the provided shaft shoulder portion 121, so that the accuracy of the installation position can be ensured and the assembly efficiency can be effectively improved.

[0071] In summary, according to the steering shaft assembly of the embodiment of the utility model, by setting the locking structure 20 at the end of the steering shaft 10 away from the connecting end, the distance between the locking structure 20 and the steering wheel can be increased, thereby improving the buffering and absorption of the steering shaft 10 to the torsional force, reducing the impact of the torsional force on the locking structure 20, and further effectively preventing the locking structure 20 from being damaged, thereby effectively improving the service life of the locking structure 20.

[0072] like Figures 4 to 6 As shown, the embodiment of the present invention further provides a steering column assembly 100, which can be a four-way adjustable steering column assembly, and the steering column assembly 100 includes a steering shaft assembly described in any of the above embodiments. Since the steering shaft assembly according to the embodiment of the present invention has the above technical effects, the steering column assembly 100 according to the embodiment of the present invention also has corresponding technical effects, which will not be described in detail in this embodiment.

[0073] According to one embodiment of the utility model, the steering column assembly 100 also includes: a column barrel 30 and a locking device, the column barrel 30 is provided with an installation channel, the steering shaft 10 is arranged in the installation channel, and the steering shaft 10 is rotatable around its own axis, the locking device is arranged on the column barrel 30, and the locking device is suitable for cooperating with the locking structure 20 to limit the rotation of the steering shaft 10.

[0074] In other words, if Figures 4 to 6 As shown, the steering column assembly 100 according to the embodiment of the utility model mainly includes a steering shaft assembly, a column barrel 30 and a locking device, wherein the column barrel 30 is the main body of the steering column, and an installation channel suitable for installing the steering shaft assembly is provided inside the column barrel 30, and the steering shaft 10 is arranged in the installation channel, and the steering shaft 10 is rotatably connected to the column barrel 30, so that the steering shaft 10 can rotate around its own axis; the locking structure 20 is located in the installation channel, and the side wall of the column barrel 30 is provided with an insertion hole at a position corresponding to the locking structure 20, and the outer side of the column barrel 30 is fixedly connected with a locking device through a stud, and the locking device can be an electronic lock, or it can be a locking structure with a lock tongue or a locking structure that cooperates with the locking structure 20, and the locking device has a lock tongue, and the position of the lock tongue corresponds to the position of the insertion hole, so that the lock tongue can extend into the installation channel through the insertion hole, and cooperate with the lock groove 211 on the locking structure 20 to limit the rotation of the steering shaft 10.

[0075] In this embodiment, the locking structure 20 is located in the installation channel, and the column 30 can protect the locking structure 20, thereby ensuring the service life of the locking structure 20. In addition, the arrangement of the locking structure 20 in the above-mentioned position can ensure that the locking device has sufficient installation space, which is convenient for adapting to different locking devices.

[0076] like Figures 4 to 6As shown, in some optional examples of the present invention, a first end of the column barrel 30 is provided with a movable tube 33 movable along the axis of the mounting channel, the steering upper shaft 11 is rotatably connected to the movable tube 33, and the end of the steering lower shaft 12 away from the steering upper shaft 11 is provided with a connecting section 122, the connecting section 122 is rotatably connected to the column barrel 30, and the end of the connecting section 122 away from the steering upper shaft 11 is located outside the column barrel 30 to facilitate connection with other external structures. Specifically, the connecting section 122 is sleeved with a connecting bearing 40, and the connecting bearing 40 is fixed to the second end of the column barrel 30, so as to realize the rotatable connection between the steering lower shaft 12 and the column barrel 30.

[0077] Furthermore, a height adjustment mechanism (for example, a telescopic cylinder) is provided on the outer side of the column tube 30, and the output end of the height adjustment mechanism can be connected to the movable tube 33. The height adjustment mechanism can drive the movable tube 33 to move axially along the installation channel. When the movable tube 33 moves, it can drive the steering upper shaft 11 to move along the installation channel, thereby realizing the height adjustment of the steering wheel; the outer side of the column tube 30 can also be connected to an angle adjustment mechanism, and the angle of the column tube 30 can be adjusted through the angle adjustment structure, thereby realizing the angle adjustment of the steering wheel.

[0078] It should be noted that the height adjustment mechanism and the angle adjustment structure may adopt the structures used in the existing steering column, which may be specifically adjusted according to actual needs and will not be described in detail in this embodiment.

[0079] In some specific embodiments of the present invention, a through hole 311 is provided at one end of the installation channel away from the connecting end 111 , and a portion of the locking structure 20 is disposed in the through hole 311 .

[0080] Specifically, Figure 6 As shown, the mounting channel is provided with an annular boss 31 at one end away from the connecting end 111, and the annular boss 31 is defined with a through hole 311 suitable for the connecting section 122 to pass through. The annular boss 31 can provide a mounting position for the connecting bearing 40, and the through hole 311 is arranged so that a part of the locking structure 20 can be arranged in the through hole 311, thereby further increasing the distance between the locking structure 20 and the steering wheel, thereby further improving the buffering and absorption of the steering shaft 10 to the torsional force.

[0081] According to an embodiment of the present invention, the column 30 is provided with a mounting surface suitable for mounting the locking device, and the mounting surface is provided with a plurality of air-avoiding holes 32 .

[0082] That is to say, Figure 4As shown, the column tube 30 has a mounting surface suitable for installing a locking device, and the mounting surface can be adjusted according to the specific structure of the locking device. For example, the mounting surface can be a plane or a curved surface. The locking device can be fixedly connected to the mounting surface of the column tube 30 by studs, and the mounting surface is also provided with a plurality of air avoidance holes 32. The design of the air avoidance holes 32 can achieve weight reduction of the steering column assembly 100, thereby achieving lightweight and cost reduction; and the air avoidance holes 32 are arranged on the mounting surface where the locking device is installed, so that the air avoidance holes 32 can be stopped after the locking device is installed, thereby preventing external impurities from entering the air avoidance holes 32.

[0083] The embodiment of the utility model further provides a steering device, including the steering column described in any of the above embodiments. Since the steering shaft assembly according to the embodiment of the utility model has the above technical effects, the steering device according to the embodiment of the utility model also has corresponding technical effects, which will not be described in detail in this embodiment.

[0084] The embodiment of the utility model further provides a vehicle, comprising the steering device described in any of the above embodiments. Since the steering shaft assembly according to the embodiment of the utility model has the above technical effects, the vehicle according to the embodiment of the utility model also has corresponding technical effects, which will not be described in detail in this embodiment.

[0085] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A steering shaft assembly, characterized in that: include: A steering shaft, the steering shaft having a connecting end, the connecting end being suitable for connecting to a steering wheel; A locking structure is used to lock the rotation of the steering shaft, and the locking structure is arranged at an end of the steering shaft away from the connecting end.

2. The steering shaft assembly according to claim 1, characterized in that: The steering shaft comprises: A steering upper shaft, wherein the steering upper shaft has a first end and a second end opposite to each other in the axial direction, and the first end of the steering upper shaft is formed as the connecting end; The steering lower shaft is movably arranged at the second end of the steering upper shaft along its axial direction, and the locking structure is arranged at an end of the steering lower shaft away from the connecting end.

3. The steering shaft assembly according to claim 2, characterized in that: The locking structure is configured as an annular locking member, and the annular locking member is sleeved on the steering lower shaft.

4. The steering shaft assembly according to claim 3, characterized in that: The annular locking member comprises: A locking sleeve is sleeved on the steering lower shaft, a plurality of locking grooves are arranged on the outer peripheral surface of the locking sleeve, and the plurality of locking grooves are distributed along the circumference of the locking sleeve, and the locking grooves are suitable for cooperating with a locking tongue to lock the rotation of the steering shaft.

5. The steering shaft assembly according to claim 4, characterized in that: The annular locking member also includes: A positioning ring is sleeved on the steering lower shaft, and the locking sleeve is sleeved on the positioning ring. A plurality of protrusions are arranged on the outer periphery of the positioning ring. The plurality of protrusions are spaced apart and distributed along the circumference of the positioning ring, and the plurality of protrusions are respectively in contact with the inner wall surface of the locking sleeve.

6. The steering shaft assembly according to claim 5, characterized in that: The protrusion is an elastic protrusion.

7. The steering shaft assembly according to claim 4, characterized in that: The outer circumferential surface of the locking sleeve is provided with a plurality of elastic convex ribs, the elastic convex ribs are distributed along the circumference of the locking sleeve, and the locking grooves are formed between adjacent elastic convex ribs.

8. The steering shaft assembly according to claim 5, characterized in that: The positioning ring is provided with a notch so that the positioning ring can be easily inserted into a predetermined position during installation.

9. The steering shaft assembly according to claim 5, characterized in that: Along the axial direction of the steering shaft, the length of the locking sleeve is greater than the length of the positioning ring.

10. The steering shaft assembly according to claim 4, characterized in that: The outer peripheral surface of the steering shaft is provided with a shaft shoulder portion, and one end of the locking sleeve away from the connecting end is in contact with the shaft shoulder portion.

11. A steering column assembly, characterized in that: A steering shaft assembly comprising the steering shaft assembly according to any one of claims 1 to 10.

12. The steering column assembly according to claim 11, characterized in that: Also includes: A column cylinder, wherein the column cylinder is provided with a mounting channel, a part of the steering shaft is arranged in the mounting channel, and the steering shaft is rotatable around its own axis; A locking device is arranged on the column, and the locking device is suitable for cooperating with the locking structure to limit the rotation of the steering shaft.

13. A steering device, characterized in that: Including the steering column assembly according to claim 11 or 12.

14. A vehicle, characterized in that: Comprising the steering device as claimed in claim 13.

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