CN219565209U - Self-locking assembly, steering column and vehicle - Google Patents

Abstract

The disclosure relates to the technical field of vehicles, in particular to a self-locking assembly, a steering column and a vehicle, which comprise a frame body, an inclined surface block, a locking piece and a pushing assembly, wherein the inclined surface block is positioned in the frame body and connected with an inner column pipe, the locking piece is arranged on one side of the inclined surface block, the pushing assembly is arranged in the frame body, and the pushing assembly is used for pushing the locking piece to move so as to enable the self-locking assembly to be switched between a locking station and an unlocking station; in the locking station, the locking piece is abutted between the inclined surface block and the outer column pipe; at the unlocking station, the locking member is disengaged from the outer column tube. The self-locking assembly used between the inner column tube and the outer column tube of the steering column ensures the relative locking of the positions of the inner column tube and the outer column tube and the rigidity frequency performance of the steering column, effectively avoids the generation of larger friction force of the inner column tube in the movement process, effectively reduces the performance requirements on the power and the like of the telescopic adjusting motor, and is beneficial to reducing the cost and the weight of the steering column.

Description

Self-locking assembly, steering column and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to a self-locking assembly, a steering column and a vehicle.

Background

The electric adjustment steering column is one of steering columns, the handle mechanism type locking and releasing mechanism of the traditional mechanical column is canceled by the electric adjustment steering column, and the telescopic adjustment of the steering column is driven by a motor, so that the height adjustment function of a steering wheel is realized.

The existing electric adjustment steering column generally comprises an upper column tube connected with a steering shaft, a lower column tube sleeved on the periphery of the upper column tube, a telescopic adjustment motor and a telescopic adjustment assembly. Output torque of the telescopic adjusting motor is output to the telescopic adjusting assembly, and the telescopic adjusting motor needs to overcome sliding friction force of the telescopic adjusting assembly to finish telescopic adjustment. In order to improve the rigidity frequency performance of the steering column, the matching design of the telescopic adjusting assembly is required to be very tight, so that the sliding friction force of the telescopic adjusting assembly is very large, and the power of the telescopic adjusting motor is required to be large enough to overcome the friction force of the telescopic adjusting assembly to realize telescopic adjustment. In particular, for steering columns that are required to provide rapid large-stroke telescopic movements, the performance requirements for the telescopic adjustment motor are higher, and at the same time the consumption of energy is also increased, with a consequent increase in cost and weight.

Disclosure of Invention

In order to solve the technical problem, the present disclosure provides a self-locking assembly, a steering column and a vehicle.

The present disclosure provides a self-locking assembly for self-locking of a steering column and for locating between an inner column tube and an outer column tube of the steering column,

the self-locking assembly includes: the self-locking device comprises a frame body, an inclined surface block, a locking piece and a pushing component, wherein the frame body is used for being connected with a transmission component of the steering column, the inclined surface block is positioned in the frame body and used for being connected with an inner column pipe, the locking piece is arranged on one side of the inclined surface block, the pushing component is arranged in the frame body, and the pushing component is used for pushing the locking piece to move so as to enable the self-locking component to be switched between a locking station and an unlocking station;

at the locking station, the locking piece is abutted between the inclined surface block and the outer column tube; in the unlocking station, the locking piece is separated from the outer column tube.

Optionally, the inclined plane block comprises two inclined planes, the two inclined planes are arranged along the moving direction of the locking piece, the frame body is provided with an outer surface used for being arranged towards the outer column tube, and one inclined plane gradually inclines towards the direction close to the outer surface along the direction away from the other inclined plane.

Optionally, the locking piece includes rolling element, the quantity of rolling element is two, two rolling element with the inclined plane one-to-one sets up, and every rolling element is along corresponding the extending direction of inclined plane can roll.

Optionally, the pushing component includes first push rod, second push rod and return spring, first push rod with the second push rod sets up relatively the inboard of framework, and follows the extending direction on inclined plane extends, return spring sets up the middle part of framework and be used for with interior pillar union coupling, first push rod with between the return spring, the second push rod with between the return spring all be provided with the rolling member, and be located first push rod with between the return spring the rolling member is first rolling member, the return spring is used for providing towards first rolling member the elasticity of first push rod, be located second push rod with rolling member between the return spring is second rolling member, the return spring is used for providing towards second rolling member the elasticity of second push rod.

Optionally, the return spring comprises two pressing arms for elastically abutting against the two rolling members respectively.

Optionally, limiting parts are arranged on two sides of the return spring, and an accommodating space for accommodating the rolling element is formed between the limiting parts and the pressing arms.

Optionally, a side of the inclined surface block, which faces away from the inner pillar tube, is provided with an avoidance groove for accommodating the limiting part.

The present disclosure also provides a steering column comprising:

the tubular column assembly comprises an outer tubular column, an inner tubular column and a transmission assembly, at least part of the inner tubular column is positioned in the outer tubular column, and the inner tubular column is in sliding connection with the outer tubular column through the transmission assembly; and

the self-locking assembly is the self-locking assembly.

Optionally, the transmission subassembly includes gear component, rack and is used for the drive gear component pivoted drive component, drive component with gear component all with outer column tube connection, the rack set up in the surface of interior column tube, gear component with the rack meshing, the framework of auto-lock subassembly with the end connection of rack.

Optionally, the inboard of outer pillar is provided with the spacer pin, interior pillar outside cover is equipped with the support cover, the support cover is located in the outer pillar, the spacer pin be used for with the support cover butt is in order to restrict interior pillar's displacement.

The disclosure also provides a vehicle comprising the steering column.

The self-locking assembly is used for self-locking of the steering column, is arranged between the inner column pipe and the outer column pipe of the steering column, and when the self-locking assembly is positioned at a locking station, the locking piece is positioned between the inclined surface block and the outer column pipe and respectively abuts against the surfaces of the inclined surface block and the outer column pipe, so that locking is realized, and the outer column pipe and the inner column pipe are prevented from generating relative displacement; when the self-locking assembly is in the unlocking station, the locking piece is separated from the outer column, and the inner column tube can move along the axial direction of the inner column tube. That is, when the inner column tube moves along the axial direction of the inner column tube, the self-locking assembly is separated from the outer column tube, and the self-locking assembly is positioned at an unlocking station, so that the movement of the inner column tube relative to the outer column tube is smooth. When the inner column tube moves to a required position, the inner column tube and the outer column tube are kept relatively static, and the self-locking assembly is abutted with the inner surface of the outer column tube at the moment so as to prevent the inner column tube and the outer column tube from generating relative movement.

Through set up the auto-lock subassembly between steering column's interior column tube and outer column tube, guaranteed the rigidity frequency performance of interior column tube and outer column tube's position relative locking and steering column to effectively avoided interior column tube to produce great frictional force in the motion process, effectively reduced performance requirements such as power to flexible accommodate motor, be favorable to reducing steering column's cost and weight.

Drawings

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

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic illustration of a steering column provided by the present disclosure;

FIG. 2 is a cross-sectional view of a steering column provided by the present disclosure;

FIG. 3 is an exploded view of the steering column provided by the present disclosure;

FIG. 4 is a schematic structural view of a self-locking assembly provided by the present disclosure;

FIG. 5 is a cross-sectional view of a self-locking assembly provided by the present disclosure;

FIG. 6 is a schematic diagram of the structure of a ramp block provided by the present disclosure;

fig. 7 is a schematic structural diagram of a frame provided in the present disclosure;

fig. 8 is a schematic structural view of a return spring provided by the present disclosure.

Reference numerals:

1. a tubular column assembly; 11. an outer column tube; 12. an inner column tube; 13. a gear member; 14. a rack; 15. a driving part; 2. a self-locking assembly; 21. a frame; 22. a bevel block; 221. an inclined plane; 222. an avoidance groove; 23. a rolling member; 24. a first push rod; 25. a second push rod; 26. a return spring; 261. a hold-down arm; 262. a limit part; 3. a limiting pin; 4. and a supporting sleeve.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

As shown in fig. 1-8, the presently disclosed embodiments provide a self-locking assembly 2 for self-locking of a steering column and for positioning between an inner column tube 12 and an outer column tube 11 of the steering column,

specifically, the steering column comprises a column assembly 1, the column assembly 1 comprises an outer column pipe 11, an inner column pipe 12 and a transmission assembly, the inner column pipe 12 is used for being connected with a steering shaft, at least part of the inner column pipe 12 is positioned in the outer column pipe 11, the inner column pipe 12 is in sliding connection with the outer column pipe 11 through the transmission assembly, the transmission assembly comprises a gear part 13, a rack 14 and a driving part 15 used for driving the gear part 13 to rotate, the driving part 15 and the gear part 13 are connected with the outer column pipe 11, the rack 14 is arranged on the outer surface of the inner column pipe 12, and the gear part 13 is meshed with the rack 14;

the self-locking assembly 2 comprises: the self-locking device comprises a frame body 21, an inclined surface block 22, a locking piece and a pushing component, wherein the frame body 21 is used for being connected with a transmission component of a steering column, the inclined surface block 22 is positioned in the frame body 21 and used for being connected with an inner column pipe 12, the locking piece is arranged on one side of the inclined surface block 22, the pushing component is arranged in the frame body 21, and the pushing component is used for pushing the locking piece to move so as to enable the self-locking component 2 to be switched between a locking station and an unlocking station;

in the locking station, the locking piece is abutted between the inclined surface block 22 and the outer column tube 11; in the unlocking position, the locking element is disengaged from the outer column tube 11.

The self-locking assembly is used for self-locking of the steering column, is arranged between the inner column pipe and the outer column pipe of the steering column, and is positioned between the inclined surface block and the outer column pipe and respectively abutted with the surfaces of the inclined surface block and the outer column pipe when the self-locking assembly is positioned at a locking station, so that locking is realized, and relative displacement between the outer column pipe and the inner column pipe is avoided; when the self-locking assembly is in the unlocking station, the locking piece is separated from the outer column, and the inner column tube can move along the axial direction of the inner column tube. That is, when the inner column tube moves along the axial direction of the inner column tube, the self-locking assembly is separated from the outer column tube, and the self-locking assembly is positioned at an unlocking station, so that the movement of the inner column tube relative to the outer column tube is smooth. When the inner column tube moves to a required position, the inner column tube and the outer column tube are kept relatively static, and the self-locking assembly is abutted with the inner surface of the outer column tube at the moment so as to prevent the inner column tube and the outer column tube from generating relative movement.

Through set up the auto-lock subassembly between steering column's interior column tube and outer column tube, guaranteed the rigidity frequency performance of interior column tube and outer column tube's position relative locking and steering column to effectively avoided interior column tube to produce great frictional force in the motion process, effectively reduced performance requirements such as power to flexible accommodate motor, be favorable to reducing steering column's cost and weight.

Specifically, the self-locking assembly 2 is applied to a steering column, an outer column tube 11 and an inner column tube 12 in the column assembly 1 are slidably connected through a gear component 13 and a rack 14, wherein at least part of the inner column tube 12 is positioned in the outer column tube 11, that is, the outer column tube 11 is sleeved outside the inner column tube 12, the rack 14 is arranged on the outer surface of the inner column tube 12, and a driving component 15 and the gear component 13 are connected with the outer column tube 11. The self-locking member is disposed at the end of the rack 14 and is connected to the inner post tube 12. When the driving part 15 is in a working state and drives the gear assembly to rotate, the gear part 13 drives the rack 14 to move, the self-locking assembly 2 is in an unlocking station, and the rack 14 drives the inner column tube 12 to move along the axial direction of the inner column tube 12. When the driving part 15 is in a non-working state, the self-locking assembly 2 is in a locking station, and the self-locking assembly 2 is in abutting connection with the inner surface of the outer column tube 11, so that the relative displacement of the outer column tube 11 and the inner column tube 12 is avoided. That is, when the driving member 15 drives the inner pillar 12 to move along the axial direction of the inner pillar 12, the self-locking assembly 2 is separated from the outer pillar 11, and the self-locking assembly 2 is in the unlocking position, so that the inner pillar 12 moves smoothly relative to the outer pillar 11. When the inner column tube 12 moves to a required position, the driving part 15 stops working, the inner column tube 12 and the outer column tube 11 keep relatively static, and the self-locking assembly 2 is abutted with the inner surface of the outer column tube 11 at the moment so as to prevent the inner column tube 12 and the outer column tube 11 from generating relative movement.

Through passing through gear part 13 and rack 14 sliding connection with outer column pipe 11 and interior column pipe 12 to set up auto-lock subassembly 2 in the one end of rack 14, guaranteed when drive part 15 is in non-operating condition, the relative locking in position of interior column pipe 12 and outer column pipe 11, avoid interior column pipe 12 to receive the exogenic action to produce relative displacement with respect to outer column pipe 11, thereby effectively support the steering wheel, and effectively improved transmission efficiency, can realize the quick, the flexible regulation by a wide margin of interior column pipe 12 with respect to outer column pipe 11, and control gear part 13 rotates, make rack 14 follow its extending direction motion need not overcome great frictional force, thereby effectively reduced the demand to drive part 15 performance, cost and weight of this device have been reduced.

In particular, the locking element may comprise a rolling element.

In the self-locking assembly 2, the frame 21 is provided, and the inclined surface block 22 and the rolling piece 23 are both arranged in the frame 21, so that the frame 21 can play a limiting role on the inclined surface block 22 and the rolling piece 23. When the driving part 15 drives the rack 14 to drive the inner column tube 12 to move, the pushing component can push the rolling piece 23 to move so as to separate the rolling piece 23 from the outer column tube 11, and the inner column tube 12 can move relative to the outer column tube 11. After the driving part 15 stops working, the pushing component pushes the rolling piece 23 to be respectively abutted with the outer column tube 11 and the inclined surface block 22 so as to play a role of locking and prevent the inner column tube 12 and the outer column tube 11 from moving relatively. Through setting up above-mentioned structure, guaranteed that when drive part 15 is in non-operating condition, the relative locking of position of interior pillar pipe 12 and outer pillar pipe 11 avoids interior pillar pipe 12 to receive the exogenic action to produce relative displacement with respect to outer pillar pipe 11 to play effective support to the steering wheel.

Specifically, the frame 21 is disposed at one end of the rack 14, and may be fixedly connected to the rack 14 or integrally formed with the rack 14.

Specifically, the above-mentioned inclined surface block 22 is placed in the frame 21 and connected to the inner column tube 12. The middle of the bevel block 22 may be provided with a mounting hole, which is connected to the inner column tube 12 by a bolt. Because the inclined surface block 22 is connected with the inner pillar 12, the surface of the inclined surface block 22 facing the inner pillar 12 can be an arc surface, so that the inclined surface block 22 can be attached to the outer surface of the inner pillar 12, and the stability of the connection between the inclined surface block 22 and the inner pillar 12 is improved.

Specifically, the slope block 22 may include two slopes 221, the two slopes 221 being arranged along the moving direction of the locking member, the frame 21 having an outer surface for being disposed toward the outer column tube 11, one slope 221 being gradually inclined toward the outer surface of the outer column tube 11 in a direction away from the other slope 221.

That is, one side of the slope block 22 is provided with two slopes 221, the two slopes 221 being arranged in the extending direction of the rack gear 14, one slope 221 being gradually inclined in a direction away from the other slope 221 toward a direction away from the inner column tube 12, so that the locking piece located on the slope 221 has a movement tendency toward the center of the frame 21. Specifically, the thickness of the corresponding inclined surface blocks 22 of the two inclined surfaces 221 may be increased from the center of the inclined surface block 22 to the edge direction, so that the distance between the inclined surface 221 and the inner surface of the outer column tube 11 gradually changes along the extending direction of the rack 14, and thus the pushing assembly can be abutted with or separated from the inner surface of the outer column tube 11 when pushing the rolling member 23 to move on the inclined surface 221.

Alternatively, the two inclined surfaces 221 are symmetrically disposed along the moving direction of the locking member.

Specifically, the number of the rolling members 23 may be two, two rolling members 23 are disposed in one-to-one correspondence with the inclined surfaces 221, and each rolling member 23 is scrollable along the extending direction of the corresponding inclined surface 221.

That is, the self-locking assembly 2 includes two rolling elements 23, when the inner column tube 12 moves towards the inner column tube 11 under the action of external force, the rolling elements 23 far away from the rack 14 are abutted between the corresponding inclined plane 221 and the outer column tube 11, and the interval between the inclined plane 221 and the inner surface of the outer column tube 11 has a reduced trend, so that when the inner column tube 12 moves towards the inner side of the outer column tube 11, the rolling elements 23 have a wedging trend, thereby effectively preventing the inner column tube 12 from moving towards the inner side of the outer column tube 11 under the action of external force. When the inner column tube 12 moves outwards from the outer column tube 11 under the action of external force, the rolling piece 23 close to the rack 14 is abutted between the corresponding inclined surface 221 and the outer column tube 11, and the distance between the inclined surface 221 and the inner surface of the outer column tube 11 has a trend of decreasing, so that when the inner column tube 12 moves outwards from the outer column tube 11, the rolling piece 23 has a wedging trend, and the inner column tube 12 is effectively prevented from moving inwards from the outer column tube 11 under the action of external force.

Specifically, the pushing assembly includes a first push rod 24, a second push rod 25 and a return spring 26, where the first push rod 24 and the second push rod 25 are relatively disposed on the inner side of the frame 21 and extend along the extending direction of the rack 14, the return spring 26 is disposed in the middle of the frame 21 and connected with the inner pillar 12, and rolling elements 23 are disposed between the first push rod 24 and the return spring 26 and between the second push rod 25 and the return spring 26. Specifically, the rolling member 23 located between the first push rod 24 and the return spring 26 is a first rolling member, the return spring 26 is for providing the first rolling member with an elastic force toward the first push rod 24, the rolling member 23 located between the second push rod 25 and the return spring 26 is a second rolling member, and the return spring 26 is for providing the second rolling member with an elastic force toward the second push rod.

The first push rod 24 and the second push rod 25 in the pushing assembly are oppositely arranged on two opposite sides of the frame 21, and the extending direction of the first push rod 24 and the second push rod 25 is parallel to the extending direction of the rack 14. And the free end of the first push rod 24 corresponds to one rolling member 23 (first rolling member), and the end of the first push rod 24 can be kept in contact with the rolling member 23 when it is not acted upon by the urging force of the gear member 13 and the external force. The free end of the second push rod 25 is provided corresponding to the other rolling member 23 (second rolling cingulum), and the end of the second push rod 25 can be kept in contact with the rolling member 23 when not acted upon by the urging force of the gear member 13 and the external force. When the gear component 13 drives the rack 14 to move, the first push rod 24 or the second push rod 25 pushes the rolling element to release the wedging state.

Specifically, when the gear part 13 drives the rack 14 to move so that the inner column tube 12 moves outwards of the outer column tube 11, the first push rod 24 close to the rack 14 pushes the rolling element 23 corresponding to the first push rod to move in a direction away from the rack 14, so that the rolling element 23 is in a wedging state, meanwhile, due to the fact that the inclined surface block 22 has a tendency to move in a direction away from the outer column tube 11 under the action of the rack 14, the distance between the inclined surface 221 corresponding to the other rolling element 23 and the inner surface of the outer column tube 11 has an increasing tendency, so that the rolling element 23 can automatically release the wedging state, and the inner column tube 12 can move in a direction away from the outer column tube 11. When the gear part 13 drives the rack 14 to move so that the inner column tube 12 moves towards the inside of the outer column tube 11, the second push rod 25 arranged away from the rack 14 pushes the corresponding rolling element 23 to move towards the direction close to the rack 14, so that the rolling element 23 is released from the wedging state and is separated from the inner surface of the outer column tube 11, meanwhile, due to the fact that the inclined surface block 22 has a trend of moving towards the direction close to the outer column tube 11 under the acting force of the rack 14, the distance between the inclined surface 221 corresponding to the other rolling element 23 and the front of the inner surface of the outer column tube 11 is increased, and the rolling element 23 can automatically release the wedging state, so that the inner column tube 12 can move towards the inside of the outer column tube 11.

And, a return spring 26 is provided in the middle of the ramp block 22 for abutting against the two rolling members 23. When the pushing force of the first push rod 24 or the second push rod 25 to the rolling element 23 is withdrawn, namely, when the driving part 15 stops working, the rolling element 23 is under the action of the resilience force of the return spring 26, meanwhile, the first push rod 24 or the second push rod 25 and the driving part 15 are pushed by the rolling element 23, the rolling element 23 is abutted between the inclined plane 221 and the inner surface of the outer column tube 11 again, and the wedging state is restored, so that the relative movement of the outer column tube 11 and the inner column tube 12 is avoided.

Specifically, the return spring 26 includes two pressing arms 261 for elastically abutting against the two rolling members 23, respectively.

The return spring 26 includes two pressing arms 261, and the pressing arms 261 are in one-to-one correspondence with the rolling members 23 so as to press the rolling members 23 between the pressing arms 261 and the first push rod 24 or the second push rod 25.

In some embodiments, the two sides of the return spring 26 are provided with a limiting portion 262, and an accommodating space for accommodating the rolling member 23 is formed between the limiting portion 262 and the pressing arm 261.

By providing the stopper 262 at the edge of the return spring 26 so that the rolling member 23 can be held between the stopper 262 and the pressing arm 261, the rolling member 23 is prevented from being separated from the return spring 26.

In some embodiments, the side of the ramp block 22 facing away from the inner post tube 12 is provided with a relief groove 222 for receiving the stop 262.

Since the two sides of the return spring 26 are provided with the limiting portions 262, in order to avoid interference between the limiting portions 262 and the inclined surface block 22, the inclined surface block 22 is provided with the avoidance groove 222 for accommodating the limiting portions 262. Specifically, the limiting portion 262 may be located at a middle position of an edge of the return spring 26, and the avoidance groove 222 on the inclined surface block 22 is disposed at a middle portion of the inclined surface block 22, corresponding to the limiting portion 262.

In some embodiments, the inner side of the outer column tube 11 is provided with a limiting pin 3, the outer side of the inner column tube 12 is sleeved with a supporting sleeve 4, the supporting sleeve 4 is positioned in the outer column tube 11, and the limiting pin 3 is used for abutting against the supporting sleeve 4 to limit the displacement of the inner column tube 12.

The support sleeve 4 is arranged on the outer side of the inner pillar 12, and the support sleeve 4 is positioned in the outer pillar 11 in the process of relative movement of the inner pillar 12 and the outer pillar 11, and when the inner pillar 12 stretches to the maximum, the support sleeve 4 is abutted with the limiting pin 3, so that the limiting effect on the inner pillar 12 is realized.

Specifically, a pin hole may be provided in the outer column tube 11, and the stopper pin 3 may be inserted into the outer column tube 11 through the pin hole.

The embodiment of the disclosure also provides a vehicle comprising the steering column.

In the vehicle provided by the embodiment of the present disclosure, the outer column tube 11 and the inner column tube 12 in the column assembly 1 of the steering column are slidably connected through the gear member 13 and the rack 14, wherein at least part of the inner column tube 12 is located in the outer column tube 11, that is, the outer column tube 11 is sleeved outside the inner column tube 12, the rack 14 is disposed on the outer surface of the inner column tube 12, and the driving member 15 and the gear member 13 are connected with the outer column tube 11. The self-locking member is disposed at the end of the rack 14 and is connected to the inner post tube 12. When the driving part 15 is in a working state and drives the gear assembly to rotate, the gear part 13 drives the rack 14 to move, the self-locking assembly 2 is in an unlocking station, and the rack 14 drives the inner column tube 12 to move along the axial direction of the inner column tube 12. When the driving part 15 is in a non-working state, the self-locking assembly 2 is in a locking station, and the self-locking assembly 2 is in abutting connection with the inner surface of the outer column tube 11, so that the relative displacement of the outer column tube 11 and the inner column tube 12 is avoided. That is, when the driving member 15 drives the inner pillar 12 to move along the axial direction of the inner pillar 12, the self-locking assembly 2 is separated from the outer pillar 11, and the self-locking assembly 2 is in the unlocking position, so that the inner pillar 12 moves smoothly relative to the outer pillar 11. When the inner column tube 12 moves to a required position, the driving part 15 stops working, the inner column tube 12 and the outer column tube 11 keep relatively static, and the self-locking assembly 2 is abutted with the inner surface of the outer column tube 11 at the moment so as to prevent the inner column tube 12 and the outer column tube 11 from generating relative movement.

Through passing through gear part 13 and rack 14 sliding connection with outer column pipe 11 and interior column pipe 12 to set up auto-lock subassembly 2 in the one end of rack 14, guaranteed when drive part 15 is in non-operating condition, the relative locking in position of interior column pipe 12 and outer column pipe 11, avoid interior column pipe 12 to receive the exogenic action to produce relative displacement with respect to outer column pipe 11, thereby effectively support the steering wheel, and effectively improved transmission efficiency, can realize the quick, the flexible regulation by a wide margin of interior column pipe 12 with respect to outer column pipe 11, and control gear part 13 rotates, make rack 14 follow its extending direction motion need not overcome great frictional force, thereby effectively reduced the demand to drive part 15 performance, cost and weight of this device have been reduced.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. A self-locking assembly is characterized in that the self-locking assembly is used for self-locking a steering column and is arranged between an inner column tube and an outer column tube of the steering column,

the self-locking assembly includes: the self-locking device comprises a frame body, an inclined surface block, a locking piece and a pushing component, wherein the frame body is used for being connected with a transmission component of the steering column, the inclined surface block is positioned in the frame body and used for being connected with an inner column pipe, the locking piece is arranged on one side of the inclined surface block, the pushing component is arranged in the frame body, and the pushing component is used for pushing the locking piece to move so as to enable the self-locking component to be switched between a locking station and an unlocking station;

at the locking station, the locking piece is abutted between the inclined surface block and the outer column tube; in the unlocking station, the locking piece is separated from the outer column tube.

2. The self-locking assembly of claim 1, wherein the ramp block comprises two ramps, the two ramps being arranged along a direction of movement of the locking member;

the frame body has an outer surface for being disposed toward the outer pillar, one of the inclined surfaces being inclined gradually in a direction away from the other inclined surface toward a direction approaching the outer surface.

3. The self-locking assembly according to claim 2, wherein the locking member comprises two rolling members, the two rolling members are arranged in one-to-one correspondence with the inclined surfaces, and each rolling member is rollable along the extending direction of the corresponding inclined surface.

4. The self-locking assembly of claim 3, wherein the pushing assembly comprises a first push rod, a second push rod and a return spring, the first push rod and the second push rod are oppositely arranged on the inner side of the frame body and extend along the extending direction of the inclined surface, the return spring is arranged between the first push rod and the second push rod and is used for being connected with the inner column tube, rolling elements are arranged between the first push rod and the return spring and between the second push rod and the return spring, the rolling elements between the first push rod and the return spring are first rolling elements, the return spring is used for providing elastic force towards the first push rod for the first rolling elements, the rolling elements between the second push rod and the return spring are second rolling elements, and the return spring is used for providing elastic force towards the second push rod for the second rolling elements.

5. The self-locking assembly of claim 4, wherein the return spring comprises two hold-down arms for resiliently abutting the two rollers, respectively.

6. The self-locking assembly according to claim 5, wherein two sides of the return spring are provided with limiting portions, and an accommodating space for accommodating the rolling element is formed between the limiting portions and the pressing arms.

7. The self-locking assembly of claim 6, wherein a side of the ramp block facing away from the inner post tube is provided with a relief groove for receiving the stop portion.

8. A steering column, comprising:

the tubular column assembly comprises an outer tubular column, an inner tubular column and a transmission assembly, at least part of the inner tubular column is positioned in the outer tubular column, and the inner tubular column is in sliding connection with the outer tubular column through the transmission assembly; and

a self-locking assembly according to any one of claims 1 to 7.

9. The steering column of claim 8, wherein the transmission assembly includes a gear member, a rack, and a driving member for driving the gear member to rotate, the driving member and the gear member being connected to the outer column tube, the rack being disposed on an outer surface of the inner column tube, the gear member being engaged with the rack, and a frame being connected to an end of the rack.

10. The steering column of claim 9, in which the inner side of the outer column tube is provided with a stop pin and the outer side of the inner column tube is sleeved with a support sleeve, the support sleeve being located within the outer column tube, the stop pin being adapted to abut the support sleeve to limit displacement of the inner column tube.

11. A vehicle comprising a steering column according to any one of claims 8 to 10.