CN217227682U - Steering column stop gear and vehicle - Google Patents

Abstract

The utility model discloses a steering column stop gear and vehicle, steering column stop gear includes: the sliding sleeve is matched and connected with the steering shaft, and can slide along the axial direction of the steering shaft; the sliding sleeve is arranged in the limiting shell and is in threaded fit with the limiting shell, and the sliding sleeve is provided with an upper limit position and a lower limit position in the limiting shell; wherein the sliding sleeve is provided with the sliding sleeve external screw thread outward, and the sliding sleeve external screw thread has first end and the second end in the extending direction, is provided with the spacing portion of first spacing portion and the spacing portion of second that separates in the axial on the spacing casing, and when the sliding sleeve was in upper limit position, first spacing portion and the first end cooperation of sliding sleeve external screw thread, when the sliding sleeve was in lower limit position, the spacing portion of second and the second end cooperation of sliding sleeve external screw thread.

Description

Steering column stop gear and vehicle

Technical Field

The utility model belongs to the technical field of the car and specifically relates to a steering column stop gear and vehicle are related to.

Background

With the development of automobile electronic technology and the demand of automatic driving, the steer-by-wire system is developed vigorously, and compared with the traditional steering system, the steer-by-wire system cancels the intermediate shaft connection between the hand-feeling feedback unit and the steering gear, so a set of mechanical angle limiting device needs to be added on the hand-feeling unit to control the number of turns of the steering wheel.

The conventional two limiting mechanisms in the steer-by-wire system are limited by matching a steering shaft with a pin and a limiting groove, and the limiting effect is poor due to the fact that the strength of the pin is limited and cannot meet the working condition of large torque; the other is that the steering shaft is matched with a threaded sleeve for limiting, and because friction of the end surface of a part or extrusion of threads is utilized during limiting, the situation of deadlocking or overlarge turning moment can occur at the tail end, so that the steering hand feeling is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a steering column stop gear, its operating mode that can satisfy great moment of torsion, it is spacing effectual to can not appear the card condition such as dead at spacing terminal position, it is safe and comfortable to use.

Another object of the present invention is to provide a vehicle.

According to the utility model discloses steering column stop gear, include: the sliding sleeve is matched and connected with the steering shaft, and can slide along the axial direction of the steering shaft; the sliding sleeve is arranged in the limiting shell and is in threaded fit with the limiting shell, and the sliding sleeve is provided with an upper limiting position and a lower limiting position in the limiting shell; the sliding sleeve is provided with a sliding sleeve external thread outside, the sliding sleeve external thread is provided with a first end and a second end in the extending direction, a first limiting portion and a second limiting portion which are spaced in the axial direction are arranged on the limiting shell, when the sliding sleeve is located at an upper limit position, the first limiting portion is matched with the first end of the sliding sleeve external thread, and when the sliding sleeve is located at a lower limit position, the second limiting portion is matched with the second end of the sliding sleeve external thread.

According to the utility model discloses steering column stop gear through the first end and the second end that utilize the sliding sleeve external screw thread respectively with the spacing cooperation of first spacing portion and second, spacing casing is to the spacing stability of sliding sleeve external screw thread to the sliding sleeve can not appear and leave the condition of difficulty from spacing position, it is better to the spacing effect of steering spindle, it is safe and comfortable to use.

In some embodiments, a first limit groove is arranged on the sliding sleeve at a position adjacent to the first end; and a second limiting groove is formed in the position, adjacent to the second end, of the sliding sleeve.

In some embodiments, the first limit stop portion is configured as a first stop block, the second limit stop portion is configured as a second stop block, and the first stop block and the second stop block both extend in the axial direction of the limit housing.

In some embodiments, the two ends of the limiting shell are further provided with an upper end cover and a lower end cover, the outer peripheral surface of the upper end cover is provided with the first stop block, and the outer peripheral surface of the lower end cover is provided with the second stop block.

Specifically, the first stop block extends along the axial direction of the limiting shell and is attached to the inner wall surface of the limiting shell, and the second stop block extends along the axial direction of the limiting shell and is attached to the inner wall surface of the limiting shell.

Furthermore, a first limit groove and a second limit groove which are matched with the first stop block and the second stop block respectively are arranged on the inner wall surface of the limit shell.

In some embodiments, the upper end cap and the lower end cap are both detachably disposed on the retaining housing.

Optionally, the upper end cover and the lower end cover are in interference fit with an inner wall surface of the limiting shell.

In some embodiments, the cross-section of the portion of the steering shaft in sliding engagement with the sliding sleeve is configured to be non-circular.

According to the utility model discloses vehicle, include above-mentioned arbitrary steering column stop gear.

According to the utility model discloses vehicle, through setting up above-mentioned steering column stop gear, the spacing effect of steering spindle is better, and vehicle driving is safe comfortable.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a steering column limit mechanism according to an embodiment of the present invention;

FIG. 2 is a partial enlarged view of area D according to the example shown in FIG. 1;

fig. 3 is a front view of a steering column limiting mechanism according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A according to the example shown in FIG. 3;

FIG. 5 is a partial enlarged view of area E according to the example shown in FIG. 4;

fig. 6 is a side view of a hidden limit housing of a steering column limit mechanism according to an embodiment of the present invention;

FIG. 7 is a partial enlarged view of area F according to the example shown in FIG. 6;

fig. 8 is a partial cross-sectional view of a steering column stop mechanism according to an embodiment of the present invention;

reference numerals:

a steering column limit mechanism 100,

A steering shaft 1,

The sliding sleeve 2, the sliding sleeve external thread 20, the first end 21, the second end 22, the first limit groove 23, the second limit groove 24,

A limit shell 3, a first limit part 31, a first stop block 310, a second limit part 32, a second stop block 320, a second limit groove 34,

An upper end cover 4,

A lower end cover 5,

A bolt 6,

A speed reducing shell 200,

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

A steering column limiting mechanism 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 8.

According to the utility model discloses steering column stop gear 100, include: the steering mechanism comprises a steering shaft 1, a sliding sleeve 2 and a limiting shell 3, wherein the sliding sleeve 2 is connected with the steering shaft 1 in a matched manner, and the sliding sleeve 2 can slide along the axial direction of the steering shaft 1; the sliding sleeve 2 is arranged in the limiting shell 3 and is in threaded fit with the limiting shell 3, and the sliding sleeve 2 is provided with an upper limit position and a lower limit position in the limiting shell 3; wherein the sliding sleeve 2 is externally provided with a sliding sleeve external thread 20, the sliding sleeve external thread 20 has a first end 21 and a second end 22 in the extending direction, the limiting shell 3 is provided with a first limiting part 31 and a second limiting part 32 which are spaced apart in the axial direction, when the sliding sleeve 2 is at the upper limit position, the first limiting part 31 is matched with the first end 21 of the sliding sleeve external thread 20, and when the sliding sleeve 2 is at the lower limit position, the second limiting part 32 is matched with the second end 22 of the sliding sleeve external thread 20.

The utility model discloses steering column stop gear 100 is used for carrying on spacingly to the rotation route of steering spindle 1 to the rotation number of turns of restriction steering spindle 1.

2 covers of sliding sleeve are established on steering spindle 1, and sliding sleeve 2 is connected with the cooperation of steering spindle 1, and sliding sleeve 2 can rotate with steering spindle 1 is synchronous, and sliding sleeve 2 still can slide along the axial direction of steering spindle 1, and sliding sleeve 2 sets up in spacing casing 3, and sliding sleeve 2 periphery is provided with sliding sleeve external screw thread 20, is provided with the internal thread in spacing casing 3, sliding sleeve 2 and 3 screw-thread fit of spacing casing.

When steering spindle 1 rotates, also rotate with steering spindle 1 with 1 matched with sliding sleeve 2, sliding sleeve 2 is owing to with 3 screw-thread fit of spacing casing, sliding sleeve 2 can be along the axial displacement of spacing casing 3 when self rotates, along the axial slip of steering spindle 1 promptly, and sliding sleeve 2 sets up and has upper limit position and lower limit position in spacing casing 3, be provided with the stop device of 2 movements of restriction sliding sleeve in spacing casing 3 to restrict sliding sleeve 2 on upper limit position or lower limit position. Just can not continue to follow axial displacement when sliding sleeve 2 is in upper limit position or lower limit position, sliding sleeve 2 just can not rotate along the circumferential direction again just, and steering shaft 1 that is connected with sliding sleeve 2 cooperation also by the restriction unable continuation rotation, consequently has upper limit position and lower limit position through setting up sliding sleeve 2 and can carry on spacingly to the rotation route of steering shaft 1 in spacing casing 3 to restriction steering shaft 1's number of turns.

In the steering column limiting mechanism 100 according to the embodiment of the present invention, as shown in fig. 2, the sliding sleeve external thread 20 has a first end 21 and a second end 22 in the extending direction, and both the first end 21 and the second end 22 are end surfaces of the sliding sleeve 2 in the circumferential direction; the limiting shell 3 is provided with a first limiting part 31 and a second limiting part 32 which are spaced in the axial direction, the first limiting part 31 can be matched with the first end 21, when the sliding sleeve 2 moves to the first end 21 to be matched with the first limiting part 31 according to the first rotating direction, the sliding sleeve 2 can not rotate along the first rotating direction any more, namely the sliding sleeve 2 has an upper limit position; by arranging the second position-limiting portion 32 to be capable of cooperating with the second end 22, when the sliding sleeve 2 moves to the second end 22 to cooperate with the second position-limiting portion 32 according to the second rotating direction, the sliding sleeve 2 can not rotate along the second rotating direction any more, that is, the sliding sleeve 2 has a lower limit position.

It is to be understood that the above-mentioned up and down directions are based on the directions shown in fig. 1, the up and down directions shown in fig. 1 are up and down directions in normal operation of the steering column, the axial direction of the steering shaft 1 is up and down, and the axial direction of the limit housing 3 is also up and down. The upper limit position of the sliding sleeve 2 is located above the lower limit position, and correspondingly, the first limit part 31 is located above the second limit part 32. Sliding sleeve 2 moves along first direction of rotation and makes sliding sleeve 2 and 3 screw-thread fit of spacing casing promptly, makes sliding sleeve 2 move to the top, and sliding sleeve 2 moves along second direction of rotation promptly and makes sliding sleeve 2 and 3 screw-thread fit of spacing casing promptly, makes sliding sleeve 2 move downwards. These orientations are merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the sleeve 2 must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

And when sliding sleeve 2 was in upper limit position or lower extreme position, if the user still controlled steering spindle 1 and rotated, for example, when sliding sleeve 2 was located upper limit position and still continues to control sliding sleeve 2 along first direction of rotation when moving, sliding sleeve 2 can produce the moment of torsion, and when stop device's intensity was lower, sliding sleeve 2 had the risk of destroying stop device. And the utility model discloses the first end 21 and the cooperation of first spacing portion 31 of sliding sleeve external screw thread 20 on the sliding sleeve 2, the second end 22 can satisfy the operating mode of great moment of torsion with the spacing portion 32 complex mode of second, and spacing effect is better to compare in the friction of using the part terminal surface or the extrusion of screw thread carry on spacingly, the utility model discloses an it is spacing to utilize between ascending first end 21 of circumference side and second end 22 and spacing portion terminal surface cooperation, can not appear the terminal surface card die or leave from the limiting position and cause the too big condition of gyroscopic moment to appear, uses safely comfortable.

According to the utility model discloses steering column stop gear 100, first end 21 and second end 22 through utilizing sliding sleeve external screw thread 20 cooperate with first spacing portion 31 and the spacing portion 32 of second respectively, spacing casing 3 is spacing stable to sliding sleeve external screw thread 20 to the condition that sliding sleeve 2 leaves the difficulty from limiting position can not appear, it is better to the spacing effect of steering spindle 1, and is safe in utilization comfortable.

In some embodiments of the present invention, as shown in fig. 2, a first position-limiting groove 23 is disposed on the sliding sleeve 2 adjacent to the first end 21, the first position-limiting groove 23 selectively cooperates with the first position-limiting portion 31, a second position-limiting groove 24 is disposed on the sliding sleeve 2 adjacent to the second end 22, and the second position-limiting groove 24 selectively cooperates with the second position-limiting portion 32.

Through setting up first spacing groove 23 in the position of neighbouring first end 21 on sliding sleeve 2, can promote first end 21 in radial ascending size to promote the area of contact of first end 21 and first spacing portion 31, promote the limiting displacement of spacing casing 3 to first end 21, and through being provided with first spacing groove 23, when sliding sleeve 2 was in the upper limit position, first spacing groove 23 cooperated with first spacing portion 31, first spacing groove 23 had certain limiting displacement to first spacing portion 31, can further promote the limiting displacement of first spacing portion 31 to first end 21. Similarly, the second limiting groove 24 is disposed on the sliding sleeve 2 adjacent to the second end 22, so that the limiting effect of the limiting housing 3 on the second end 22 is better.

In some embodiments of the present invention, as shown in fig. 2 and 5, the first limiting portion 31 is configured as a first stop block 310, the second limiting portion 32 is configured as a second stop block 320, the first stop block 310 and the second stop block 320 both extend along the axial direction of the limiting housing 3, the first stop block 310 is located on the extending path of the internal thread inside the limiting housing 3, the second stop block 320 is located on the extending path of the internal thread inside the limiting housing 3, when the sliding sleeve external thread 20 rotates along the internal thread of the limiting housing 3, the moving path of the sliding sleeve 2 can be smoothly blocked by the first stop block 310 or the second stop block 320, so as to avoid that the first stop block 310 or the second stop block 320 is not blocked in place, and the sliding sleeve external thread 20 can be limited at the upper limit position by the first stop block 310, or limited at the lower limit position by the second stop block 320.

Specifically, the first stop block 310 has a first end surface facing the first end 21, and when the sliding sleeve 2 is in the upper limit position, the first end 21 stops against the first end surface; the second stop block 320 has a second end surface facing the second end 22, when the sliding sleeve 2 is at the lower limit position, the second end 22 abuts against the second end surface, the first end 21 is in surface contact with the first stop block 310, and the second end 22 is in surface contact with the second stop block 320, so as to stably contact, thereby limiting the sliding sleeve 2 at the upper limit position or the lower limit position.

The utility model discloses an in some embodiments, as shown in fig. 1 and fig. 2, the both ends of spacing casing 3 still are provided with upper end cover 4 and lower end cover 5, and upper end cover 4 and lower end cover 5 have plugged the both ends of spacing casing 3, can promote the inside cleanliness factor of spacing casing 3, avoid external dust etc. to pollute the sliding sleeve 2 of spacing casing 3 inside, and sliding sleeve 2 moves smoothly, is difficult for being blocked by the pollutant, promotes sliding sleeve 2's motion stability.

The utility model discloses an in some embodiments, the equal detachably of upper end cover 4 and lower end cover 5 sets up on spacing casing 3, and the dismouting of the steering column stop gear 100 of being convenient for is convenient in maintaining or replacing sliding sleeve 2.

Optionally, a first stop block 310 is disposed on the outer peripheral surface of the upper end cap 4, a second stop block 320 is disposed on the outer peripheral surface of the lower end cap 5, the first stop block 310 extends along the axial direction of the limiting housing 3 and is attached to the inner wall surface of the limiting housing 3, and the second stop block 320 extends along the axial direction of the limiting housing 3 and is attached to the inner wall surface of the limiting housing 3.

When the upper end cover 4 is installed at the end of the limiting shell 3, the first stop block 310 extends into the limiting shell 3 and is attached to the inner wall surface of the limiting shell 3, so that the installation stability of the first stop block 310 and the limiting shell 3 is improved; similarly, when the lower end cap 5 is mounted on the end portion of the limiting shell 3, the second stopping block 320 extends into the limiting shell 3 and is attached to the inner wall surface of the limiting shell 3, so that the mounting stability of the second stopping block 320 and the limiting shell 3 is improved.

Further, the inner wall surface of the limiting housing 3 is provided with a first limiting groove and a second limiting groove 34 which are respectively matched with the first stopping block 310 and the second stopping block 320, the first limiting groove limits the first stopping block 310, the second limiting groove 34 limits the second stopping block 320, and the installation stability of the first stopping block 310, the second stopping block 320 and the limiting housing 3 is further improved.

In some embodiments of the present invention, the first limiting groove is located on the inner wall surface of the limiting casing 3, the first limiting groove extends away from the inside of the limiting casing 3, and the first stopping block 310 also extends toward the inside direction away from the limiting casing 3, when the upper end cover 4 is installed at the end of the limiting casing 3, the first stopping block 310 is matched with the first limiting groove, so as to further improve the installation stability of the first stopping block 310 and the limiting casing 3. Similarly, the second limiting groove 34 is also located on the inner wall surface of the limiting housing 3, and when the lower end surface is mounted at the end of the limiting housing 3, the second stopping block 320 is matched with the second limiting groove 34, so that the mounting stability of the second stopping block 320 and the limiting housing 3 is further improved. In some embodiments of the present invention, as shown in fig. 2, the second limiting recess 34 is a through hole formed on the inner wall of the limiting shell 3, and when the lower end 5 is mounted on the end of the limiting shell 3, the second stopping block 320 is inserted into the second limiting recess 24 to fit with each other, which is convenient for installation.

In other embodiments of the present invention, as shown in fig. 6 and 7, a first stopping block 310 is provided on the outer peripheral surface of the upper end cap 4, a second stopping block 320 is provided on the end surface of the lower end cap 5 facing the limiting casing 3, the first stopping block 310 extends along the axial direction of the limiting casing 3 and is attached to the inner wall surface of the limiting casing 3, and the second stopping block 320 extends along the axial direction of the limiting casing 3 and is attached to the inner wall surface of the limiting casing 3.

Optionally, the upper end cap 4 and the lower end cap 5 are in interference fit with the inner wall surface of the limiting shell 3, so that the connection stability of the upper end cap 4 and the lower end cap 5 with the limiting shell 3 is improved.

In some embodiments of the present invention, as shown in fig. 2, a through hole for the steering shaft 1 to pass through is provided on the upper end cover 4, and the steering shaft 1 passes through the upper end cover 4 and extends into the limiting casing 3, and is connected with the sliding sleeve 2 in the limiting casing 3 in a matching manner.

In some embodiments of the present invention, as shown in fig. 2, an installation block for installing and fixing the lower end cover 5 and the limiting casing 3 is further provided on the outer peripheral surface of the lower end cover 5, the installation block extends along the axial direction of the limiting casing 3, and an installation groove matched with the installation block is provided on the inner wall surface of the limiting casing 3.

It can be understood that, sliding sleeve 2 passes through the internal thread screw-thread fit in sliding sleeve external screw thread 20 and the spacing casing 3, and the thread length in the spacing casing 3 is sliding sleeve 2's movement distance promptly, consequently the utility model discloses the number of turns of sliding sleeve 2 is changed to the position of the internal thread length in the steering column stop gear 100 accessible adjustment spacing casing 3, first spacing portion 31 and the spacing portion 32 of second to can change the number of turns of motion of steering spindle 1, realize spacing to the different number of turns requirements of steering spindle 1.

In some embodiments, as shown in fig. 2 and 8, the cross section of the part of the steering shaft 1 which is in sliding fit with the sliding sleeve 2 is configured to be non-circular, and the sheath which is in sliding fit with the steering shaft 1 is also configured to be non-circular, so that the sliding sleeve 2 and the steering shaft 1 are relatively fixed in the circumferential direction, and the sliding sleeve 2 can only slide in the axial direction relative to the steering shaft 1, but can not rotate in the circumferential direction, so that the sliding sleeve 2 can synchronously rotate with the steering shaft 1 to move in the axial direction under the threaded fit. Preferably, the cross section of the sliding fit part of the steering shaft 1 and the sliding sleeve 2 is configured as a symmetrical structure, so that the rotation stability of the steering shaft 1 is improved.

Optionally, the cross section of the sliding fit part of the steering shaft 1 and the sliding sleeve 2 is rectangular, the sliding sleeve 2 and the steering shaft 1 are relatively fixed in the circumferential direction, and the corners of the rectangular shape are provided with the rounded corners, so that the sliding sleeve 2 can move in the axial direction conveniently, and the movement smoothness of the sliding sleeve 2 is improved.

In other embodiments of the utility model, steering shaft 1 is provided with external splines with 2 sliding fit's of sliding sleeve part, and sliding sleeve 2 is provided with internal splines with 1 cooperation portion of steering shaft, and sliding sleeve 2 is relative fixed with steering shaft 1 in week. The above two fitting manners of the steering shaft 1 and the sliding sleeve 2 are used for illustration, but it is obvious that a person skilled in the art can understand that other fitting manners of the steering shaft 1 and the sliding sleeve 2 fixed in the circumferential direction are applied to the technical solution of the present invention after reading the above technical solutions, which also falls into the protection scope of the present invention.

According to the utility model discloses vehicle, including any one above-mentioned steering column stop gear 100.

According to the utility model discloses vehicle, through setting up above-mentioned steering column stop gear 100, the spacing effect of steering spindle 1 is better, and vehicle driving is safe comfortable.

As shown in fig. 1, the utility model discloses steering column stop gear 100 is located steering mechanism's end, and the at least part of steering spindle 1 is located speed reduction casing 200, as shown in fig. 2, bolt 6 is also fixed mounting on spacing casing 3, is provided with a plurality of installation departments on spacing casing 3, a plurality of bolts 6 and installation department one-to-one, and bolt 6 passes the installation department and fixes spacing casing 3 on speed reduction casing 200.

A specific embodiment of the steering column stopper mechanism 100 of the present invention will be described in detail with reference to fig. 1 to 8.

According to the utility model discloses steering column stop gear 100, include: steering spindle 1, sliding sleeve 2 and spacing casing 3, 2 covers of sliding sleeve are established and are connected with steering spindle 1 cooperation on steering spindle 1, the cross section structure of steering spindle 1 and 2 sliding fit's of sliding sleeve part is non-circular symmetry, sliding sleeve 2 is fixed relatively with steering spindle 1 in circumference, sliding sleeve 2 can only slide in axial direction relative to steering spindle 1, consequently sliding sleeve 2 can only rotate with steering spindle 1 is synchronous, sliding sleeve 2 sets up in spacing casing 3, 2 peripheries of sliding sleeve are provided with sliding sleeve external screw thread 20, be provided with the internal thread in spacing casing 3, sliding sleeve 2 and 3 screw-thread fit of spacing casing. The sliding sleeve external thread 20 has a first end 21 and a second end 22 in the extending direction, and the first end 21 and the second end 22 are both end faces in the circumferential direction of the sliding sleeve 2.

The two ends of the limiting shell 3 are further provided with an upper end cover 4 and a lower end cover 5, the upper end cover 4 and the lower end cover 5 are in interference fit with the limiting shell 3, a first stop block 310 is arranged on the outer peripheral surface of the upper end cover 4, a second stop block 320 is arranged on the outer peripheral surface of the lower end cover 5, the first stop block 310 and the second stop block 320 extend along the axial direction of the limiting shell 3, and a first limiting groove and a second limiting groove 34 which are matched with the first stop block 310 and the second stop block 320 are arranged on the inner wall surface of the limiting shell 3.

When the steering shaft 1 rotates, the sliding sleeve 2 matched with the steering shaft 1 also rotates synchronously with the steering shaft 1, the sliding sleeve 2 is in threaded fit with the limiting shell 3, the sliding sleeve 2 can move along the axial direction of the limiting shell 3 when rotating, namely, slides along the axial direction of the steering shaft 1, when the sliding sleeve 2 moves to the first end 21 to be matched with the first stop block 310 according to the first rotating direction, the sliding sleeve 2 can not rotate along the first rotating direction any more, namely, the sliding sleeve 2 has an upper limit position in the limiting shell 3, and when the sliding sleeve 2 moves to the second end 22 to be matched with the second limit part 32 according to the second rotating direction, the sliding sleeve 2 can not rotate along the second rotating direction any more, namely, the sliding sleeve 2 has a lower limit position in the limiting shell 3.

According to the utility model discloses steering column stop gear 100, upper end cover 4 and lower end cover 5 all can dismantle with spacing casing 3 and be connected, the process of following brief description with the assembly of steering column stop gear 100, at first set up the inside at spacing casing 3 with 2 screw-thread fits of sliding sleeve, install upper end cover 4 and lower end cover 5 at the both ends of spacing casing 3 afterwards, pass clearing hole and sliding sleeve 2 cooperation on the upper end cover 4 with steering spindle 1 again and be connected, fix spacing casing 3 on speed reduction casing 200 through bolt 6 and accomplish the installation promptly.

Other configurations of the steering column stopper mechanism 100 according to the embodiment of the present invention, such as the steering shaft 1 and the like, and operations thereof are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A steering column stop gear, its characterized in that includes:

a steering shaft;

the sliding sleeve is matched and connected with the steering shaft, and can slide along the axial direction of the steering shaft;

the sliding sleeve is arranged in the limiting shell and is in threaded fit with the limiting shell, and the sliding sleeve is provided with an upper limiting position and a lower limiting position in the limiting shell; wherein

The sliding sleeve is externally provided with a sliding sleeve external thread, the sliding sleeve external thread is provided with a first end and a second end in the extending direction, a first limiting portion and a second limiting portion which are spaced in the axial direction are arranged on the limiting shell, when the sliding sleeve is located at an upper limit position, the first limiting portion is matched with the first end of the sliding sleeve external thread, and when the sliding sleeve is located at a lower limit position, the second limiting portion is matched with the second end of the sliding sleeve external thread.

2. The steering column limit mechanism of claim 1, wherein a first limit groove is disposed on the slip sleeve adjacent the first end; and a second limiting groove is formed in the position, adjacent to the second end, of the sliding sleeve.

3. The steering column limit mechanism of claim 1, wherein the first limit portion is configured as a first stop block and the second limit portion is configured as a second stop block, the first stop block and the second stop block each extending in an axial direction of the limit housing.

4. The steering column limiting mechanism according to claim 3, wherein an upper end cover and a lower end cover are further arranged at two ends of the limiting shell, the first stop block is arranged on the outer peripheral surface of the upper end cover, and the second stop block is arranged on the outer peripheral surface of the lower end cover.

5. The steering column limiting mechanism according to claim 4, wherein the first stopper extends in the axial direction of the limiting housing and is attached to an inner wall surface of the limiting housing, and the second stopper extends in the axial direction of the limiting housing and is attached to an inner wall surface of the limiting housing.

6. The steering column limit mechanism according to claim 5, wherein a first limit groove and a second limit groove which are respectively matched with the first stop block and the second stop block are arranged on the inner wall surface of the limit housing.

7. The steering column limit mechanism of claim 4, wherein the upper end cap and the lower end cap are both removably disposed on the limit housing.

8. The steering column limiting mechanism according to claim 7, wherein the upper end cover and the lower end cover are in interference fit with an inner wall surface of the limiting shell.

9. The steering column limit mechanism of claim 1, wherein a cross-section of a portion of the steering shaft in sliding engagement with the sliding sleeve is configured to be non-circular.

10. A vehicle comprising a steering column stop mechanism according to any one of claims 1 to 9.

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