CN116142279A - Steering column with secondary crumple structure and vehicle - Google Patents
Steering column with secondary crumple structure and vehicle Download PDFInfo
- Publication number
- CN116142279A CN116142279A CN202310168767.4A CN202310168767A CN116142279A CN 116142279 A CN116142279 A CN 116142279A CN 202310168767 A CN202310168767 A CN 202310168767A CN 116142279 A CN116142279 A CN 116142279A
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- protection tube
- steering column
- protective tube
- tube
- mandrel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
- B62D1/192—Yieldable or collapsible columns
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
The invention relates to the technical field of automobile parts and discloses a steering column with a secondary collapse structure and a vehicle, wherein the steering column comprises an upper mandrel, a lower mandrel, an upper protecting pipe, a middle protecting pipe and a lower protecting pipe, wherein the upper mandrel is in spline connection with the lower mandrel, the upper mandrel is rotatably arranged in the upper protecting pipe, and the lower mandrel is rotatably arranged in the middle protecting pipe and the lower protecting pipe; the upper protection tube is in sliding connection with one end of the middle protection tube, the lower protection tube is in sliding connection with the other end of the middle protection tube, the pressing mechanism is arranged at the sliding connection positions of the upper protection tube, the lower protection tube and the middle protection tube and comprises a protruding structure arranged on the middle protection tube, a threaded through hole is formed in the protruding structure, a compression screw plug is connected with the threaded through hole in a threaded manner, a gasket is arranged at one end, close to the upper protection tube, of the compression screw plug, an adjusting body is arranged at one end, far away from the compression screw plug, of the gasket, and the adjusting body abuts against the upper protection tube. The invention can further reduce the peak value of the collapsing force, thereby reducing the impact force on the driver when the driver impacts the steering wheel.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a steering column with a secondary crumple structure and a vehicle.
Background
The automobile steering column not only transmits the rotation torque of the steering wheel to the steering gear, but also provides corresponding crumple and buffer, thereby protecting the driver and avoiding the rigid impact generated when the automobile collides. When the automobile collides, a driver impacts the steering wheel and the air bag in front of the automobile due to inertia, and impact force is instantaneously generated on the steering wheel; because the steering wheel and steering column are rigidly connected, the impact force is transferred to the steering column, and therefore the steering column is required to collapse to reduce driver impact injuries caused by impact with the steering wheel. When the steering column contracts to generate crumple, part of impact energy can be absorbed, and the injury to a driver caused by collision accidents is reduced. The collapse function of the steering column is achieved by the relative contraction of the upper and lower tubular columns.
In the steering column of the prior art, for example, patent with the publication number CN212828646U discloses an energy-absorbing steering column assembly, which comprises an upper column tube and a lower column tube, wherein an upper mounting bracket is fixedly arranged on the outer side of the upper column tube, an upper steering shaft is movably arranged on the inner side of the upper column tube, a buffer sleeve is fixedly arranged on the right side of the upper steering shaft and positioned in the upper column tube, a spring is fixedly arranged on the inner side of the buffer sleeve, and a connecting clamping plate is fixedly arranged on the right side of the spring. This energy-absorbing steering column assembly can make the car take place the front striking and the impact is less than the design prescribed value time, connects cardboard and buffer shaft extrusion spring to the inside shrink of buffer sleeve, reduces the impact that the driver received, after the collision, the cardboard is connected in the outside extrusion of spring for buffer shaft right push back, thereby reached the effect that can automatic recovery after the steering column crumple warp. However, the collapsing process of the patent is completely determined by the stroke of the spring, the collapsing force is also completely determined by the performance of the spring, and the original position can be automatically restored. The collapse structure in the patent with the publication number of CN111361630A is a gradient multicellular collapse structure and comprises a lower steering shaft, a lower steering column tube, an energy absorbing device, an upper steering column tube and an upper steering shaft. The energy-absorbing device comprises a ladder three-dimensional gradient negative poisson ratio multi-cell structure, wherein the multi-cell structure is formed by a plurality of layers of three-dimensional negative poisson ratio multi-cell structures which are arranged in a gradient manner in the vertical direction and are connected end to end, and the densities of the layers are different. The structure is formed by arranging a plurality of layers of three-position structures in the axial direction. The structure collapses the steering column after the cellular structure is compressed during collapse.
From the prior art, the existing steering column crumple structures are all one-section crumple structures, the peak value of crumple force is limited by one-section structure, the peak value of crumple force cannot be further reduced, and the impact force to a driver caused by the collision of the driver on the steering wheel cannot be further reduced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a steering column and a vehicle having a secondary crush structure, which can further reduce the peak value of the crush force, thereby reducing the impact force to the driver when the driver hits the steering wheel.
The invention solves the technical problems by the following technical means:
the invention discloses a steering column with a two-stage crumple structure, which comprises an upper mandrel, a lower mandrel, an upper protecting pipe, a middle protecting pipe and a lower protecting pipe, wherein the upper mandrel is in spline connection with the lower mandrel, the upper mandrel is rotatably arranged in the upper protecting pipe, and the lower mandrel is rotatably arranged in the middle protecting pipe and the lower protecting pipe; the upper protection tube is connected with one end of the middle protection tube in a sliding manner, the lower protection tube is connected with the other end of the middle protection tube in a sliding manner, and pressing mechanisms are arranged at sliding connection positions of the upper protection tube, the lower protection tube and the middle protection tube.
The friction force to be overcome when the technical scheme generates primary collapse is divided into two parts: the first part is the friction force when the upper protective tube and the middle protective tube relatively slide, and the second part is the friction force when the upper mandrel and the lower mandrel are in collapsing relative movement through spline fit. The generated friction force required to be overcome by the secondary collapse is the friction force required to be overcome when the middle protective tube and the lower protective tube slide relatively, and the friction force generated when the upper mandrel and the lower mandrel are in relative movement through spline fit. When the steering column collapses, the friction force overcome by the primary collapse is smaller than that overcome by the secondary collapse, so that the primary collapse is generated when the steering column is impacted, and the secondary collapse is generated when the primary collapse is finished; through the two-stage crumple, the peak value of the crumple force can be further reduced, and then the impact force on the driver caused by the impact of the driver on the steering wheel is reduced.
Further, the outer walls of the upper protective tube and the lower protective tube are both in sliding connection with the inner wall of the middle protective tube, and the pressing mechanism is arranged on the middle protective tube.
Further, hold-down mechanism is including setting up the protruding structure on well pillar, set up the screw thread through-hole on the protruding structure, screw thread through-hole internal thread connection has the clamp screw stopper, the one end that the clamp screw stopper is close to last pillar is provided with the gasket, the one end that the gasket kept away from the clamp screw stopper is provided with adjusts wholly, the adjustment body offsets with last pillar. According to the technical scheme, the compression screw plug is connected with the protruding structure on the middle protection tube through threaded fit, the compression screw plug is screwed and compresses the gasket through the upper threads of the middle protection tube, the gasket compresses the whole body, the adjusting body compresses the upper protection tube, radial compression force is generated on the upper protection tube, and therefore the upper protection tube and the middle protection tube are fixed in a relatively compressed mode.
Further, the middle protection tube is fixedly connected with a first mounting bracket, and mounting through holes are formed in two sides of the first mounting bracket. When the steering column is installed on the whole vehicle, the steering column can be installed on the installation bolts of the whole vehicle through the installation through holes on the two sides of the first installation support, and the steering column is installed on the whole vehicle through bolt tightening.
Further, the one end fixedly connected with second installing support of going up the dabber is kept away from to lower dabber, the second installing support is U type structure, the both sides of second installing support are provided with the screw thread mounting hole. When the steering column is mounted on the whole vehicle, the steering column can be mounted on the mounting bolts of the whole vehicle through the threaded mounting holes on the two sides of the second mounting bracket, and the steering column is mounted on the whole vehicle through tightening the bolts.
Further, the fixed cover is equipped with the third installing support of U-shaped on the well pillar, be provided with the spout parallel with the axial of well pillar on the third installing support, the gliding axostylus axostyle that is provided with in the spout, be provided with the fourth installing support on the third installing support, be provided with the axostylus axostyle mounting hole on the fourth installing support, the axostylus axostyle passes axostyle mounting hole and fourth installing support fixed connection, be provided with the regulation locking handle on the tip of axostylus axostyle. The technical scheme is that the friction force of the third part is overcome in the second-stage collapse, namely the fourth mounting bracket compresses the friction force which needs to be overcome when the third mounting bracket relatively slides in the collapse; the steering column is fixed when no vehicle collision occurs, the angle and the telescopic adjusting function are not provided, and the adjusting locking handle provides the mutual pressing action of the middle protective tube and the lower protective tube of the steering column.
Further, a first bearing is fixedly connected between the lower core shaft and the lower protective tube, an inner ring of the first bearing is fixedly connected with the lower core shaft, and an outer ring of the first bearing is fixedly connected with the inner wall of the lower protective tube; the inner rings of the second bearing and the third bearing are fixedly connected with the upper mandrel, and the outer rings of the second bearing and the third bearing are fixedly connected with the inner wall of the upper protection tube. According to the technical scheme, the bearings are arranged between the upper protective tube and the upper mandrel and between the lower protective tube and the lower mandrel, so that the rotation of the upper mandrel and the lower mandrel is smoother.
Further, the outer wall of one end of the middle protection tube is arranged on the inner wall of the upper protection tube in a sliding manner, the inner wall of the other end of the middle protection tube is arranged on the outer wall of the lower protection tube in a sliding manner, and the pressing mechanism is arranged on the upper protection tube and the middle protection tube. The arrangement of the technical scheme can avoid the problem of avoiding axial and radial spaces of the upper protective tube and the lower protective tube in the collapsing process, and can reduce the use quantity of bearings.
In a second aspect, the invention also discloses a vehicle comprising a vehicle body and the steering column with the secondary crush structure.
The steering column with the secondary crumple structure and the vehicle have the following advantages:
when the automobile collides with the automobile, the driver impacts the steering wheel and the air bag in front of the automobile due to inertia and instantly generates impact force on the steering wheel; the steering wheel is rigidly connected with the steering column, and the impact force is transmitted to the steering column, so that the steering column generates corresponding crumple, the two crumples are divided into two stages according to time sequence when the steering column crumples, and the friction force overcome by the first stage crumple is smaller than that of the second stage crumple, so that the first stage crumple is generated when the steering column is impacted, and the second stage crumple is generated when the first stage crumple ends; through the two-stage crumple, the peak value of the crumple force can be further reduced, and then the impact force on the driver caused by the impact of the driver on the steering wheel is reduced.
Drawings
FIG. 1 is a schematic perspective view of a steering column with a secondary crush structure according to the present invention;
FIG. 2 is a schematic longitudinal cross-sectional view of a steering column with a secondary crush structure according to the present disclosure;
FIG. 3 is a cross-sectional view of the first mounting bracket of FIG. 1;
FIG. 4 is a cross-sectional view of the first hold-down mechanism of FIG. 1;
fig. 5 is a schematic cross-sectional view of a steering column with a secondary crush structure in accordance with embodiment 2 of the present invention.
Wherein, each numeral in the figure represents: the upper mandrel 1, the upper protective tube 2, the middle protective tube 3, the first compressing mechanism 4, the adjusting body 4-1, the gasket 4-2, the compressing screw plug 4-3, the second compressing mechanism 5, the first mounting bracket 6, the third compressing mechanism 7, the lower protective tube 8, the lower mandrel 9, the second mounting bracket 10, the first bearing 11, the third mounting bracket 12, the shaft lever 13, the second bearing 14, the third bearing 15, the locking handle 16 and the fourth mounting bracket 17.
Detailed Description
The invention will be described in detail below with reference to the attached drawings and specific examples:
the following embodiments of the present invention are described in terms of specific examples, and those skilled in the art will appreciate the advantages and capabilities of the present invention from the disclosure herein. It should be noted that, the illustrations provided in the following embodiments are for illustration only, and are shown in schematic drawings, not physical drawings, and are not to be construed as limiting the invention, and in order to better illustrate the embodiments of the invention, certain components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is merely for convenience in describing the present invention and simplifying the description, and it is not indicated or implied that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present invention, and that the specific meanings of the terms described above may be understood by those skilled in the art according to circumstances.
Example 1,
As shown in fig. 1-4, the present embodiment is a steering column with a secondary collapse structure, which comprises an upper mandrel 1, a lower mandrel 9, an upper protection tube 2, a middle protection tube 3 and a lower protection tube 8, wherein the upper mandrel 1 is in spline connection with the lower mandrel 9, a first bearing 11 is fixedly connected between the lower mandrel 9 and the lower protection tube 8, an inner ring of the first bearing 11 is fixedly connected with the lower mandrel 9, and an outer ring of the first bearing 11 is fixedly connected with an inner wall of the lower protection tube 8; a second bearing 14 and a third bearing 15 are fixedly connected between the upper protection tube 2 and the upper mandrel 1, the inner rings of the second bearing 14 and the third bearing 15 are fixedly matched with the upper mandrel 1, and the inner walls of the upper protection tube 2 are fixedly matched with the outer rings of the second bearing 14 and the third bearing 15; as shown in fig. 2, the upper protection tube 2 is slidably connected with the right end of the middle protection tube 3, the lower protection tube 8 is slidably connected with the left end of the middle protection tube 3, compression mechanisms are arranged at the sliding connection positions of the upper protection tube 2, the lower protection tube 8 and the middle protection tube 3, a first compression mechanism 4 and a second compression mechanism 5 are arranged at the right part of the middle protection tube 3, and a third compression mechanism 7 is arranged at the left part of the middle protection tube 3.
In this embodiment, the outer walls of the upper protection tube 2 and the lower protection tube 8 are both slidably connected with the inner wall of the middle protection tube 3, and the pressing mechanism is disposed on the middle protection tube 3. As shown in fig. 4, the pressing mechanism comprises a protruding structure integrally formed on the middle protective tube 3, a threaded through hole is formed in the protruding structure, a pressing screw plug 4-3 is connected in the threaded through hole in a threaded mode, a gasket 4-2 is arranged at the lower end of the pressing screw plug 4-3, an adjusting body 4-1 is arranged at the lower end of the gasket 4-2, and the adjusting body 4-1 abuts against the upper protective tube 2.
The middle protective tube 3 is fixedly connected with a first mounting bracket 6, and mounting through holes are formed in two sides of the first mounting bracket 6; one end of the lower mandrel 9, which is far away from the upper mandrel 1, is fixedly connected with a second mounting bracket 10, the second mounting bracket 10 is of a U-shaped structure, and threaded mounting holes are formed in two sides of the second mounting bracket 10. The middle protection tube 3 is fixedly sleeved with a U-shaped third mounting bracket 12, a chute parallel to the axial direction of the middle protection tube 3 is formed in the third mounting bracket 12, a shaft lever 13 is arranged in the chute in a sliding mode, a fourth mounting bracket 17 is arranged on the third mounting bracket 12, a mounting hole of the shaft lever 13 is formed in the fourth mounting bracket 17, the shaft lever 13 penetrates through the mounting hole of the shaft lever 13 and is fixedly connected with the fourth mounting bracket 17, and an adjusting locking handle 16 is fixedly connected to the end portion of the shaft lever 13.
When the steering column with the secondary crumple structure is installed, the steering column is installed on an installation bolt of a whole vehicle through installation through holes on two sides of the first installation support 6 and threaded installation holes on two sides of the second installation support 10, and is installed on the whole vehicle through bolt tightening.
If a vehicle collision occurs, the steering column is first subjected to primary collapse, wherein the friction force to be overcome during the primary collapse has two parts: the first part is the friction force generated when the outer wall of the upper protective tube 2 and the inner wall of the middle protective tube 3 slide relatively, and the second part is the friction force generated when the upper mandrel 1 and the lower mandrel 9 are in crumple relative movement through the fit of internal and external splines. When setting up the installation, set up the frictional force that the one-level collapses and overcome and be than the secondary crumple and reduce, when the one-level crumple is accomplished the back, produce the secondary crumple, wherein the required frictional force that overcomes of secondary crumple has three parts: the first part is the friction force which needs to be overcome when the inner wall of the middle protective tube 3 and the outer wall of the lower protective tube 8 slide relatively, the second part is the friction force which needs to be overcome when the third mounting bracket 12 and the fourth mounting bracket 17 slide relatively in a collapsing state, and the third part is the friction force when the upper mandrel 1 and the lower mandrel 9 move relatively in a collapsing state through the fit of internal and external splines. Through the two-stage crumple, the peak value of the crumple force can be further reduced, and then the impact force on the driver caused by the impact of the driver on the steering wheel is reduced.
EXAMPLE 2,
As shown in fig. 5, this embodiment differs from embodiment 1 only in that the outer wall of the right end of the middle tube 3 is slidably provided on the inner wall of the upper tube 2, and the pressing mechanism is provided on the upper tube 2 and the middle tube 3. The arrangement of the embodiment can avoid the problem of avoiding the axial and radial spaces of the upper protective tube 2 and the lower protective tube 8 in the collapsing process, and can reduce the use quantity of bearings.
EXAMPLE 3,
The present embodiment is a vehicle including a vehicle body and the steering column with the secondary crush structure in embodiment 1 or embodiment 2 described above.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention. The technology, shape, and construction parts of the present invention, which are not described in detail, are known in the art.
Claims (9)
1. The utility model provides a take steering column of second grade collapse structure, includes dabber and lower dabber, go up dabber and lower dabber splined connection, its characterized in that: the upper mandrel is rotatably arranged in the upper protective tube, and the lower mandrel is rotatably arranged in the middle protective tube and the lower protective tube; the upper protection tube is connected with one end of the middle protection tube in a sliding manner, the lower protection tube is connected with the other end of the middle protection tube in a sliding manner, and pressing mechanisms are arranged at sliding connection positions of the upper protection tube, the lower protection tube and the middle protection tube.
2. A steering column with a secondary crush structure as set forth in claim 1, wherein: the outer walls of the upper protective tube and the lower protective tube are both in sliding connection with the inner wall of the middle protective tube, and the pressing mechanism is arranged on the middle protective tube.
3. A steering column with a secondary crush structure as set forth in claim 2, wherein: the pressing mechanism comprises a protruding structure arranged on the middle protective tube, a threaded through hole is formed in the protruding structure, a pressing screw plug is connected in the threaded through hole in a threaded mode, a gasket is arranged at one end, close to the upper protective tube, of the pressing screw plug, an adjusting body is arranged at one end, far away from the pressing screw plug, of the gasket, and the adjusting body abuts against the upper protective tube.
4. A steering column with a secondary crush structure as set forth in claim 3, wherein: the middle protection tube is fixedly connected with a first mounting bracket, and mounting through holes are formed in two sides of the first mounting bracket.
5. A steering column with a secondary crush structure as set forth in claim 4, wherein: the one end fixedly connected with second installing support of going up the dabber is kept away from to lower dabber, the second installing support is U type structure, the both sides of second installing support are provided with the screw thread mounting hole.
6. A steering column with a secondary crush structure as set forth in claim 5, wherein: the fixed cover is equipped with the third installing support of U-shaped on the well pillar, be provided with the spout parallel with the axial of well pillar on the third installing support, the gliding axostylus axostyle that is provided with in the spout, be provided with the fourth installing support on the third installing support, be provided with the axostylus axostyle mounting hole on the fourth installing support, the axostylus axostyle passes axostyle mounting hole and fourth installing support fixed connection, be provided with the regulation locking handle on the tip of axostylus axostyle.
7. A steering column with a secondary crush structure as set forth in claim 1, wherein: a second bearing and a third bearing are fixedly connected between the upper protection tube and the upper mandrel, the inner rings of the second bearing and the third bearing are fixedly connected with the upper mandrel, and the outer rings of the second bearing and the third bearing are fixedly connected with the inner wall of the upper protection tube; the inner ring of the first bearing is fixedly connected with the lower core shaft, and the outer ring of the first bearing is fixedly connected with the inner wall of the lower protective tube.
8. A steering column with a secondary crush structure as set forth in claim 1, wherein: the outer wall of well pillar one end is sliding to be set up on the inner wall of last pillar, the inner wall of well pillar other end slides to be set up on the outer wall of lower pillar, hold-down mechanism sets up on last pillar and well pillar.
9. A vehicle, characterized in that: the vehicle comprising a vehicle body and the steering column with the secondary crush structure of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310168767.4A CN116142279A (en) | 2023-02-27 | 2023-02-27 | Steering column with secondary crumple structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310168767.4A CN116142279A (en) | 2023-02-27 | 2023-02-27 | Steering column with secondary crumple structure and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116142279A true CN116142279A (en) | 2023-05-23 |
Family
ID=86350536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310168767.4A Pending CN116142279A (en) | 2023-02-27 | 2023-02-27 | Steering column with secondary crumple structure and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116142279A (en) |
-
2023
- 2023-02-27 CN CN202310168767.4A patent/CN116142279A/en active Pending
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