CN110001755A - Telescopic steering column and automobile including the telescopic steering column - Google Patents

Abstract

The invention belongs to auto parts fields, specifically provide a kind of telescopic steering column and the automobile including the telescopic steering column.Present invention seek to address that the problem of steering wheel height of existing automobile is not adjustable.For this purpose, steering column of the invention includes first rotating shaft, the second shaft, the first column tube and the second column tube of coaxial arrangement, the first column tube is rotatably sleeved in first rotating shaft, and the first column tube and first rotating shaft are axially fixed connection；Second column tube is rotatably sleeved in the second shaft, and the second column tube and the second shaft are axially fixed connection；First rotating shaft is circumferentially fixed with the second shaft and axially slidably connects together；First column tube and the second column tube axially slidably connect together.Automobile with the above-mentioned steering column of the present invention can realize the raising and lowering of steering wheel by the sliding between first rotating shaft and the second shaft, optimize the riding experience of driver.

Description

Telescopic steering column and vehicle including the same

technical field

The invention belongs to the field of automobile parts, and in particular provides a telescopic steering column and an automobile including the telescopic steering column.

Background technique

With the continuous development of autonomous driving technology, more and more car companies have begun to configure autonomous driving functions for their cars. Self-driving cars rely on artificial intelligence, visual computing, radar, surveillance devices and global positioning systems to work together to allow on-board computers to operate the motor vehicle autonomously and safely without any human intervention.

Cars that are usually equipped with self-driving functions can also be switched to manual driving mode. When the car is switched to manual driving mode, the driver can control the driving of the car by manipulating the steering wheel, gas pedal and brake pedal. When the car is switched to the automatic driving mode, the car will automatically drive according to the road conditions after planning the path.

However, when the existing car is in the automatic driving mode, the height of the steering wheel cannot be adjusted, which affects the comfort of the driver.

Accordingly, there is a need in the art for a new telescopic steering column and a vehicle including the telescopic steering column to solve the above problems.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problem in the prior art, that is, in order to solve the problem that the height of the steering wheel of the existing automobile cannot be adjusted, the present invention provides a telescopic steering column, the steering column includes a coaxially arranged first rotating shaft , a second rotating shaft, a first column pipe and a second column pipe, the first column pipe is rotatably sleeved on the first rotating shaft, and the first column pipe and the first rotating shaft are axially fixed connection; the second column tube is rotatably sleeved on the second rotating shaft, and the second column tube and the second rotating shaft are fixedly connected in the axial direction; the first rotating shaft and the first rotating shaft The two rotating shafts are fixed in the circumferential direction and are slidably connected together in the axial direction; the first column tube and the second column tube are slidably connected together in the axial direction.

In the preferred technical solution of the above-mentioned telescopic steering column, the steering column further includes a first bearing, and the outer ring of the first bearing is in radial and axial contact with the first column pipe, respectively, The inner ring of the first bearing abuts against the first shaft in the radial direction and the axial direction, respectively, so that the first column tube and the first shaft are rotatably fixed together in the axial direction; and/or , the steering column further includes a second bearing, the outer ring of the second bearing is in radial and axial contact with the second column pipe, and the inner ring of the second bearing is in contact with the second The rotating shafts are respectively abutted in the radial direction and the axial direction, so that the second column tube and the second rotating shaft are rotatably fixed together in the axial direction.

In the preferred technical solution of the above-mentioned telescopic steering column, the steering column further includes a third column arranged coaxially with the first column, and one end of the third column is connected to the first column. One end of the column tube close to the second column tube is axially slidably connected together, and the other end of the third column tube and the end of the second column tube close to the first column tube are axially slidable connected together.

In the preferred technical solution of the above-mentioned telescopic steering column, the third column pipe is sleeved on the outer side of the first column pipe, and the second column pipe is sleeved on the outer side of the third column pipe.

In the preferred technical solution of the above-mentioned telescopic steering column, the steering column further includes a third rotating shaft coaxial with the first rotating shaft, and one end of the third rotating shaft is close to the first rotating shaft. One end of the second rotating shaft is fixed in the circumferential direction and slidably connected together in the axial direction, and the other end of the third rotating shaft and the end of the second rotating shaft close to the first rotating shaft are fixed in the circumferential direction and axially. Slidably connected together.

In the preferred technical solution of the above-mentioned telescopic steering column, the first rotating shaft and the third rotating shaft are tubular structures, the third rotating shaft is sleeved on the outer side of the second rotating shaft, and the first rotating shaft It is sleeved on the outside of the third rotating shaft.

In the preferred technical solution of the above-mentioned telescopic steering column, the steering column further comprises a first driving device, and the first driving device is used to drive the first column pipe and the second column pipe to approach each other or stay away.

In the preferred technical solution of the above-mentioned telescopic steering column, the first driving device includes a first motor, a first lead screw and a first sliding block threadedly engaged with the first lead screw, the first motor The casing is fixedly connected with the second column pipe, the rotating shaft of the first motor is drivingly connected with one end of the first lead screw, the first slider is fixedly connected with the first column pipe; the When the first motor drives the first lead screw to rotate, the first slider can be moved closer to or away from the first motor, and thus the first column tube and the second column tube can be moved closer to or away from each other .

In the preferred technical solution of the above-mentioned telescopic steering column, the steering column further includes a bracket assembly for fixing the second column pipe.

In the preferred technical solution of the above-mentioned telescopic steering column, the bracket assembly includes a fixing bracket, a mounting bracket and a crushing energy-absorbing member, the fixing bracket is connected with the second column pipe, and the mounting bracket is connected with The fixing bracket is slidably connected, one end of the crushing energy absorbing member is fixedly connected with the fixing bracket, and the other end of the crushing energy absorbing member is fixedly connected with the mounting bracket.

In the preferred technical solution of the above-mentioned telescopic steering column, the crush energy-absorbing member is a plate-shaped structure, and the plate-shaped structure is provided with a crush groove divided into an inner end and an outer end, and the inner side is provided with a crush groove. The outer end is fixedly connected with the fixing bracket, and the outer end is fixedly connected with the mounting bracket; when the fixing bracket and the mounting bracket slide relative to each other under the action of an external force, the plate-like structure can collapse along the The direction of extension of the groove is torn.

In the preferred technical solution of the above-mentioned telescopic steering column, one end of the fixing bracket is pivotally connected to the end of the second column tube away from the first column tube, and the steering column further includes a second column tube. A driving device, wherein the second driving device is used for driving the second column tube to rotate relative to the fixed bracket.

In the preferred technical solution of the above-mentioned telescopic steering column, the second driving device includes a second motor, a second lead screw and a second slider threadedly engaged with the second lead screw, the second motor The casing is fixedly connected to the second column pipe, the rotating shaft of the second motor is drivingly connected to one end of the second lead screw, the second slider is pivotally connected to the fixed bracket, and the The pivot axis of the second slider is perpendicular to the axis of the second lead screw; when the second motor drives the second lead screw to rotate, the second slider can be moved closer to or away from the second motor, and thus rotate the second column tube relative to the fixed bracket.

In addition, the present invention also provides an automobile comprising the retractable steering column according to any one of the above preferred embodiments.

Those skilled in the art can understand that, in the preferred technical solution of the present invention, the first column pipe is rotatably sleeved on the first rotating shaft, and the first column pipe and the first rotating shaft are fixedly connected in the axial direction ; Make the second column tube rotatably sleeved on the second shaft, and make the second column tube and the second shaft fixedly connected in the axial direction; and make the first shaft and the second shaft fixed in the circumferential direction and in the axial direction Being slidably connected together, the first column tube and the second column tube are slidably connected together in the axial direction, so that the first rotating shaft and the second rotating shaft can approach or move away from each other. When the retractable steering column of the present invention is applied to an automobile, one end of the first rotating shaft away from the second rotating shaft is fixedly connected to the steering wheel, and one end of the second rotating shaft far away from the first rotating shaft is connected to the steering gear, and the steering wheel can use the first rotating shaft to connect with the steering wheel. The sliding height adjustment between the second shaft and the second shaft improves the driver's driving experience. At the same time, the invention also protects the first rotating shaft and the second rotating shaft through the first column pipe and the second column pipe, so as to prevent the sliding connection between the first rotating shaft and the second rotating shaft from being polluted by dust.

In a feasible embodiment of the present invention, a third column tube is further arranged between the first column tube and the second column tube, and a third rotating shaft is further arranged between the first rotating shaft and the second rotating shaft. Wherein, the third column tube is sleeved on the outside of the first column tube, the second column tube is sleeved on the outside of the third column tube; the third rotating shaft is sleeved on the outside of the second rotating shaft, and the first rotating shaft is sleeved on the third column tube outside of the shaft. In addition, the first column tube, the second column tube and the third column tube can slide relative to each other in the axial direction, and the first rotating shaft, the second rotating shaft and the third rotating shaft are circumferentially fixed with each other and can be axially relative sliding. Through the arrangement of three column tubes and three rotating shafts, the telescopic length of the steering column can be made larger in a limited space, which optimizes the driver's driving experience.

Those skilled in the art can, as required, set a slot for accommodating the steering wheel on the center console of the car, so that the steering wheel can be lowered into the slot as the steering column shrinks, so that the car can provide the driver with more Lots of activity space.

Further, the present invention further includes a first motor fixedly connected to the second column pipe, a first lead screw drivingly connected to the first motor, and a first sliding block threadedly engaged with the first lead screw, the first sliding block is connected to The first column tube is fixedly connected. When the first motor drives the first lead screw to rotate, the first slider can be moved closer to or away from the first motor, and thus the first column tube and the second column tube can be moved closer to or away from each other , so as to realize the automatic raising and lowering of the steering wheel.

Scheme 1. A telescopic steering column, characterized in that the steering column comprises a first rotating shaft, a second rotating shaft, a first column pipe and a second column pipe arranged coaxially,

The first column pipe is rotatably sleeved on the first rotating shaft, and the first column pipe and the first rotating shaft are fixedly connected in the axial direction;

The second column pipe is rotatably sleeved on the second rotating shaft, and the second column pipe and the second rotating shaft are fixedly connected in the axial direction;

The first rotating shaft and the second rotating shaft are fixed in the circumferential direction and slidably connected together in the axial direction;

The first column tube and the second column tube are axially slidably connected together.

Solution 2. The telescopic steering column according to solution 1, wherein the steering column further includes a first bearing, and the outer ring of the first bearing is radially aligned with the first column tube. Abutting respectively in the axial direction, the inner ring of the first bearing and the first rotating shaft abutting respectively in the radial direction and the axial direction, so that the first column pipe and the first rotating shaft are rotatably fixed in the axial direction come together;

And/or, the steering column further includes a second bearing, the outer ring of the second bearing is in radial and axial contact with the second column tube, and the inner ring of the second bearing is in contact with the second column. The second rotating shaft abuts in the radial direction and the axial direction, respectively, so that the second column pipe and the second rotating shaft are rotatably fixed together in the axial direction.

Solution 3. The telescopic steering column according to solution 1, wherein the steering column further includes a third column tube coaxially arranged with the first column tube,

One end of the third column pipe is axially slidably connected to one end of the first column pipe close to the second column pipe,

The other end of the third column tube and the end of the second column tube close to the first column tube are axially slidably connected together.

Solution 4. The telescopic steering column according to solution 3, wherein the third column tube is sleeved on the outer side of the first column tube, and the second column tube is sleeved on the first column tube. The outside of the three-column tube.

Solution 5. The telescopic steering column according to solution 4, wherein the steering column further includes a third rotating shaft coaxially arranged with the first rotating shaft,

One end of the third rotating shaft and one end of the first rotating shaft close to the second rotating shaft are fixed in the circumferential direction and are slidably connected together in the axial direction,

The other end of the third rotating shaft and one end of the second rotating shaft close to the first rotating shaft are fixed in the circumferential direction and slidably connected together in the axial direction.

Option 6. The telescopic steering column according to Option 5, wherein the first rotating shaft and the third rotating shaft are tubular structures,

The third rotating shaft is sleeved on the outside of the second rotating shaft, and the first rotating shaft is sleeved on the outside of the third rotating shaft.

Solution 7. The telescopic steering column according to any one of solutions 1 to 6, characterized in that, the steering column further includes a first driving device, and the first driving device is used to drive the first driving device. A vial and the second vial are either close to or apart from each other.

Solution 8. The telescopic steering column according to solution 7, wherein the first driving device includes a first motor, a first lead screw, and a first slider threadedly engaged with the first lead screw ,

The casing of the first motor is fixedly connected to the second column tube, the rotating shaft of the first motor is drivingly connected to one end of the first lead screw, and the first slider is connected to the first column tube fixed connection;

When the first motor drives the first lead screw to rotate, the first slider can be moved closer to or away from the first motor, and thus the first column tube and the second column tube can be brought closer to each other or stay away.

Solution 9. The telescopic steering column according to any one of solutions 1 to 6, wherein the steering column further comprises a bracket assembly for fixing the second column tube.

Solution 10. The telescopic steering column according to solution 9, wherein the bracket assembly includes a fixing bracket, a mounting bracket and a crush energy absorbing member,

The fixing bracket is connected with the second column pipe,

The mounting bracket is slidably connected with the fixing bracket,

One end of the crushing energy-absorbing member is fixedly connected to the fixing bracket, and the other end of the crushing energy-absorbing member is fixedly connected to the mounting bracket.

Claim 11. The telescopic steering column according to Claim 10, wherein the collapse energy absorbing member is a plate-like structure, and the plate-like structure is provided with a collapsible structure that divides it into an inner end and an outer end. a shrinking groove, the inner end is fixedly connected with the fixing bracket, and the outer end is fixedly connected with the mounting bracket;

When the fixing bracket and the mounting bracket slide relative to each other under the action of an external force, the plate-like structure can be torn along the extension direction of the crush groove.

Solution 12. The telescopic steering column according to solution 10, wherein one end of the fixed bracket is pivotally connected to the end of the second column tube away from the first column tube, and the steering The pipe string further includes a second driving device for driving the second string pipe to rotate relative to the fixed bracket.

Solution 13. The telescopic steering column according to solution 12, wherein the second driving device includes a second motor, a second lead screw, and a second slider threadedly engaged with the second lead screw ,

The casing of the second motor is fixedly connected to the second column tube, the rotating shaft of the second motor is drivingly connected to one end of the second lead screw, and the second slider pivots with the fixed bracket connected, and the pivot axis of the second slider is perpendicular to the axis of the second lead screw;

When the second motor drives the second lead screw to rotate, the second sliding block can be moved closer to or away from the second motor, and thus the second column pipe can be rotated relative to the fixed bracket.

Solution 14. An automobile, characterized in that the automobile comprises the telescopic steering column according to any one of claims 1 to 13.

Description of drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

Fig. 1 is the side view of the telescopic steering column of the present invention;

Fig. 2 is the top view of the telescopic steering column of the present invention;

Fig. 3 is the front view of the telescopic steering column of the present invention;

4 is a bottom view of the telescopic steering column of the present invention;

FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 4 .

List of reference numbers:

1. Rotating shaft assembly; 11. The first rotating shaft; 12. The second rotating shaft; 13. The third rotating shaft; 2. The column tube assembly; 21. The first column tube; 3. The first bearing; 4. The second bearing; 5. The first driving device; 51, the first motor; 52, the first lead screw; 53, the first slider; 6, the bracket assembly; 7. Mounting bracket; 63. Crush energy-absorbing member; 7. Second drive device; 71, Second motor; 72, Second lead screw; 73, Second slider.

Detailed ways

It should be understood by those skilled in the art that the embodiments in this section are only used to explain the technical principles of the present invention, and are not used to limit the protection scope of the present invention. For example, the rotating shaft assemblies of the present invention are not limited to two and three, but can also be any number of other, such as four, five, six, etc., the column tube assembly of the present invention is not limited to two and three, it can also be Other arbitrary multiples, such as four, five, six, etc., can be adjusted by those skilled in the art as required to adapt to specific application occasions, and the adjusted technical solution will still fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. Terms indicating a direction or positional relationship are based on the direction or positional relationship shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a particular orientation, be constructed and operate in a particular orientation, Therefore, it should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, it should also be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a It is a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in FIGS. 1 to 4 , the telescopic steering column of the present invention mainly includes a rotating shaft assembly 1 , a column tube assembly 2 , a first driving device 5 , a bracket assembly 6 and a second driving device 7 . Wherein, the rotating shaft assembly 1 includes a plurality of rotating shafts arranged coaxially, the multiple rotating shafts are circumferentially fixed to each other, and can slide axially between each other. The column tube assembly 2 includes a plurality of column tubes arranged coaxially, and the plurality of column tubes are axially slidable among each other. The column tube assembly 2 is sleeved on the outer side of the rotating shaft assembly 1 , and the first driving device 5 is used to drive the column tube assembly 2 to extend or shorten. In addition, when the column tube assembly 2 is elongated, the rotating shaft assembly 1 is also elongated, and when the column tube assembly 2 is shortened, the rotating shaft assembly 1 is also shortened. The bracket assembly 6 is used to fix the column tube assembly 2 to the body of the automobile. The second driving device 7 is used to drive the column tube assembly 2 to swing relative to the bracket assembly 6, so that when both ends of the shaft assembly 1 are connected to the steering wheel and the steering gear, the second driving device 7 can drive the steering wheel to move back and forth relative to the driver.

Those skilled in the art can understand that the rotating shaft assembly 1 may include any number of rotating shafts, for example, two, three, four and so on. Likewise, the column tube assembly 2 may also include any number of column tubes, for example, two, three, four, and the like.

As shown in FIG. 5 , in a preferred embodiment of the present invention, the telescopic steering column of the present invention further includes a first bearing 3 and a second bearing 4 .

Continuing to refer to FIG. 5 , the rotating shaft assembly 1 includes a first rotating shaft 11 , a second rotating shaft 12 and a third rotating shaft 13 in a tubular structure. Wherein, the first rotating shaft 11 is used for connecting the steering wheel of the automobile, and the second rotating shaft 12 is used for connecting the steering gear of the automobile. The column tube assembly 2 includes a first column tube 21 , a second column tube 22 and a third column tube 23 in a tubular structure.

Continuing to refer to FIG. 5 , the first column pipe 21 is rotatably sleeved on the first rotating shaft 11 , and the first column pipe 21 and the first rotating shaft 11 are fixedly connected in the axial direction. Specifically, the inner side of the first column tube 21 is provided with a shaft shoulder and a retaining ring groove, and the outer wall of the first rotating shaft 11 is provided with a shaft shoulder and a retaining ring groove. The outer ring of the first bearing 3 abuts against the inner wall of the first column tube 21 in the radial direction; the outer ring of the first bearing 3 abuts against the shoulder on the first column tube 21 in the axial direction, and is embedded in the first column tube. The circlips in the circlip groove on 21 are in contact with each other. The inner ring of the first bearing 3 abuts against the outer wall of the first shaft 11 in the radial direction; the inner ring of the first bearing 3 abuts against the shoulder on the first shaft 11 in the axial direction, and is in contact with the card embedded The snap springs in the spring grooves are in contact with each other.

Continuing to refer to FIG. 5 , the second column tube 22 is rotatably sleeved on the second shaft 12 , and the second column tube 22 and the second shaft 12 are fixedly connected in the axial direction. Specifically, the inner side of the second column tube 22 is provided with a shaft shoulder and a retaining ring groove, and the outer wall of the second rotating shaft 12 is provided with a shaft shoulder and a retaining ring groove. The outer ring of the second bearing 4 abuts against the inner wall of the second column tube 22 in the radial direction; the outer ring of the second bearing 4 abuts against the shoulder on the second column tube 22 in the axial direction, and is embedded in the second column tube 22 in the axial direction. The circlips in the circlip groove on 22 are in contact with each other. The inner ring of the second bearing 4 abuts against the outer wall of the second shaft 12 in the radial direction; the inner ring of the second bearing 4 abuts against the shoulder on the second shaft 12 in the axial direction, and is inserted into the second shaft 12 The snap springs in the spring grooves are in contact with each other.

Continuing to refer to FIG. 5 , the right end of the third rotating shaft 13 in FIG. 5 is slidably connected to the first rotating shaft 11 , and the left end of the third rotating shaft 13 is slidably connected to the second rotating shaft 12 in FIG. 5 . Specifically, the third rotating shaft 13 is sleeved on the outside of the second rotating shaft 12 , and the first rotating shaft 11 is sleeved on the outside of the third rotating shaft 13 . Further, the inside of the first rotating shaft 11 is provided with internal splines, the outside of the second rotating shaft 12 is provided with external splines, the inside of the third rotating shaft 13 is provided with internal splines, and the outside of the third rotating shaft 13 is provided with external splines. The internal splines on the first rotating shaft 11 are inserted into the external splines on the third rotating shaft 13 and can slide relative to each other in the axial direction. The external splines on the second rotating shaft 12 are inserted into the internal splines of the third rotating shaft 13 and can slide relative to each other in the axial direction.

Continuing to refer to FIG. 5 , the right end of the third column tube 23 is slidably connected to the first column tube 21 in FIG. 5 , and the left end of the third column tube 23 is slidably connected to the second column tube 22 in FIG. 5 . Specifically, the third column tube 23 is sleeved on the outer side of the first column tube 21 , and the second column tube 22 is sleeved on the outer side of the third column tube 23 . Further, the outer side of the first column pipe 21 is provided with an external spline, the inner side of the second column pipe 22 is provided with an inner spline, the inner side of the third column pipe 23 is provided with an inner spline, and the outer side of the third column pipe 23 is provided with a External splines. The outer splines on the first column tube 21 are inserted into the inner splines of the third column tube 23 and can slide relative to each other in the axial direction. The inner splines on the second column tube 22 are inserted into the outer splines of the third column tube 23 and can slide relative to each other in the axial direction. In addition, in another feasible embodiment of the present invention, those skilled in the art can also, as required, do not provide splines on the first column pipe 21, the second column pipe 22 and the third column pipe 23, so that the first column pipe 21. The second column tube 22 and the third column tube 23 can rotate relative to each other.

As shown in FIGS. 1 to 4 , the first driving device 5 mainly includes a first motor 51 , a first lead screw 52 and a first slider 53 threadedly engaged with the first lead screw 52 . The casing of the first motor 51 is fixedly connected to the second column tube 22 , the rotating shaft of the first motor 51 is drivingly connected to one end of the first lead screw 52 , and the first slider 53 is fixedly connected to the first column tube 21 .

Those skilled in the art can understand that the driving connection between the first motor 51 and the first lead screw 52 may be a coaxial fixed connection between the rotating shaft of the first motor 51 and the first lead screw 52, or the first motor 51 The rotating shaft and the first lead screw 52 are driven and connected together through a reducer.

Those skilled in the art can also understand that when the first motor 51 drives the first lead screw 52 to rotate, the first slider 53 can be moved closer to or away from the first motor 51, and thus the first column tube 21 and the second column can be caused to rotate. The tubes 22 are either close to or away from each other. Since the first rotating shaft 11 is axially fixedly connected to the first column pipe 21 and the second rotating shaft 12 is axially fixedly connected to the second column pipe 22 , the first rotating shaft 11 and the second rotating shaft 12 will also follow the first column pipe 21 . and the second column tube 22 is approached/away from the approach/away.

As shown in FIG. 1 and FIG. 5 , the bracket assembly 6 of the present invention mainly includes a fixing bracket 61 , a mounting bracket 62 and a crushing energy absorbing member 63 .

1 and 5, one end of the fixed bracket 61 is pivotally connected to the end of the second column pipe 22 away from the first column pipe 21, and the fixed bracket 61 is also connected to the second column pipe 22 through the second driving device 7, So that the second driving device 7 can drive the second column tube 22 to rotate about its pivot end.

As shown in FIG. 1 , the mounting bracket 61 is slidably connected to the fixing bracket 62. Specifically, the mounting bracket 61 is provided with a chute, the fixing bracket 62 is provided with a sliding rail matching the chute, and the mounting bracket 61 and the fixing bracket are The bracket 62 is slidably connected to the sliding rail through the sliding slot. Preferably, there is a small included angle between the extending direction of the sliding groove and the sliding rail and the axis of the second column pipe 22 .

Continuing to refer to FIG. 1 , the crushing energy-absorbing member 63 is a plate-like structure, and the crushing energy-absorbing member 63 is provided with a crush groove (not marked in the figure) that divides it into an inner end and an outer end. The inner end of the crushing energy absorbing member 63 is fixedly connected with the fixing bracket 61 , and the outer end of the crushing energy absorbing member 63 is fixedly connected with the mounting bracket 62 . When the fixing bracket 61 and the mounting bracket 62 slide relative to each other under the action of external force (for example, when a car collides), the crushing energy-absorbing member 63 is torn along the extension direction of the crushing groove to absorb the collision energy and prevent the steering wheel from hurting the driver. member. In addition, those skilled in the art can also set the crushing energy absorbing member 63 into other structures feasible for the person, for example, a spring, an air cylinder, a hydraulic cylinder, and the like, as required.

As shown in FIGS. 2 and 3 , the second driving device 7 mainly includes a second motor 71 , a second lead screw 72 and a second slider 73 threadedly engaged with the second lead screw 72 . The casing of the second motor 71 is fixedly connected to the second column tube 22 , the rotating shaft of the second motor 71 is drivingly connected to one end of the second lead screw 72 , and the second slider 73 is pivotally connected to the fixing bracket 61 . The pivotal connection means that the second sliding block 73 can rotate around the radial direction of the second lead screw 72 , that is, the pivot axis of the second sliding block 73 is perpendicular to the axis of the second lead screw 72 .

Those skilled in the art can understand that the driving connection between the second motor 71 and the second lead screw 72 may be a coaxial fixed connection between the rotating shaft of the second motor 71 and the second lead screw 72, or the second motor 71 The rotating shaft and the second lead screw 72 are driven and connected together through a reducer.

As shown in FIG. 3 , when the second motor 71 drives the second lead screw 72 to rotate, the second slider 73 can be moved closer to or away from the second motor 71 , and thus the second column tube 22 can be rotated relative to the fixed bracket 61 .

In another feasible embodiment of the present invention, different from the above-mentioned preferred embodiment, the arrangement of the second driving device 7 is omitted, and the fixing bracket 61 is fixedly connected with the second column pipe 22 .

In yet another feasible embodiment of the present invention, which is different from the above-mentioned preferred embodiment, those skilled in the art can omit the third rotating shaft 13 and the third column pipe 23 as required, and make the first rotating shaft 11 and the second rotating shaft 12 is directly connected, so that the first column tube 21 and the second column tube 22 are directly connected.

In addition, although not shown in the drawings, the present invention also provides an automobile, which includes the retractable steering column described in any one of the above embodiments. In addition, the telescopic steering column is fixedly connected to the vehicle body through the mounting bracket 62 , the telescopic steering column is connected to the steering wheel through the first rotating shaft 11 , and the telescopic steering column is connected to the steering gear through the second rotating shaft 12 . Preferably, the center console of the automobile is provided with a card slot for accommodating the steering wheel, and the steering wheel can be lowered into the card slot with the shrinkage of the steering column, so that the automobile provides more space for the driver to move.

Based on the above description, those skilled in the art can understand that, in the preferred embodiment of the present invention, by providing three shafts slidable relative to each other in the axial direction and three column tubes slidable relative to each other in the axial direction, the present invention The inventive steering column telescoping has a longer effective stroke. So that the steering wheel of the car can be operated by the driver when it is raised, and can be embedded in the card slot of the center console when it is lowered, so as to provide more space for the driver to move. Further, in the present invention, the steering column can be automatically raised and lowered through the first driving device 5, and the steering column can be automatically moved forward and backward through the second driving device 7, thereby optimizing the driving experience of the driver.

So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

1. a kind of telescopic steering column, which is characterized in that the steering column includes the first rotating shaft of coaxial arrangement, second Shaft, the first column tube and the second column tube,

First column tube is rotatably sleeved in the first rotating shaft, and first column tube and the first rotating shaft edge Axial restraint connection；

Second column tube is rotatably sleeved in second shaft, and second column tube and second shaft edge Axial restraint connection；

The first rotating shaft is circumferentially fixed with second shaft and axially slidably connects together；

First column tube is axially slidably connected together with second column tube.

2. telescopic steering column according to claim 1, which is characterized in that the steering column further includes first axle Hold, the outer ring of the first bearing abuts respectively radially and axially with first column tube, the inner ring of the first bearing with The first rotating shaft abuts respectively radially and axially, so that first column tube and the first rotating shaft are rotationally along axial direction It is secured together；

And/or the steering column further includes second bearing, and the outer ring of the second bearing and second column tube are along diameter It is abutted respectively to axial, the inner ring of the second bearing abuts respectively radially and axially with second shaft, so that institute It states the second column tube and second shaft is rotationally axially fixed to together.

3. telescopic steering column according to claim 1, which is characterized in that the steering column further include with it is described The third column tube of first column tube coaxial arrangement,

One end of the third column tube is connected to close to one end of second column tube along axially slidable with first column tube Together,

The other end of the third column tube is with second column tube close to one end of first column tube along axially slidable connection To together.

4. telescopic steering column according to claim 3, which is characterized in that the third column tube is set in described The outside of one column tube, second column tube are set in the outside of the third column tube.

5. telescopic steering column according to claim 4, which is characterized in that the steering column further include with it is described The third shaft of first rotating shaft coaxial arrangement,

One end of the third shaft and the first rotating shaft are circumferentially fixed close to one end of second shaft and along axis To being slidably connected to together,

The other end of the third shaft is circumferentially fixed with second shaft close to one end of the first rotating shaft and edge It is axially slidable to connect together.

6. telescopic steering column according to claim 5, which is characterized in that the first rotating shaft and the third turn Axis is tubular structure,

The third shaft is set in the outside of second shaft, and the first rotating shaft is set in the outer of the third shaft Side.

7. telescopic steering column according to any one of claim 1 to 6, which is characterized in that the steering column It further include first driving device, the first driving device is for driving first column tube and second column tube close to each other Or it is separate.

8. telescopic steering column according to claim 7, which is characterized in that the first driving device includes first Motor, the first lead screw and the first sliding block engaged with first threads of lead screw,

The casing of the first motor is fixedly connected with second column tube, the shaft of the first motor and first lead screw One end be drivingly connected, first sliding block is fixedly connected with first column tube；

When the first motor drives first lead screw rotation, first sliding block can be made close to or far from first electricity Machine, and therefore make first column tube and second column tube close to each other or separate.

9. telescopic steering column according to any one of claim 1 to 6, which is characterized in that the steering column It further include the bracket component for fixing second column tube.

10. telescopic steering column according to claim 9, which is characterized in that the bracket component includes fixed branch Frame, mounting bracket and crumple energy absorbing members,

The fixed bracket is connected with second column tube,

The mounting bracket is connect with the fixed bracket slide,

One end of the crumple energy absorbing members is fixedly connected with the fixed bracket, the other end of the crumple energy absorbing members and institute Mounting bracket is stated to be fixedly connected.