CN102963414B - Steering column of automobile - Google Patents

Steering column of automobile Download PDF

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Publication number
CN102963414B
CN102963414B CN201210508641.9A CN201210508641A CN102963414B CN 102963414 B CN102963414 B CN 102963414B CN 201210508641 A CN201210508641 A CN 201210508641A CN 102963414 B CN102963414 B CN 102963414B
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Prior art keywords
tube column
column
steering column
tooth block
teeth
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CN102963414A (en
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杨洪斌
万强
杨渝民
张涛
陈超
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SICHUAN MIANYANG SANLI CO Ltd
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SICHUAN MIANYANG SANLI CO Ltd
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Abstract

The invention discloses a steering column of an automobile, which comprises an inner tubular column, an outer tubular column sleeved with the inner tubular column, a fixed seat mounted on the outer tubular column, a regulating bracket, a pin shaft, a toothed plate, and a toothed block arranged on the regulating bracket, wherein a sliding groove extending in the axial direction of the outer tubular column is formed in the fixed seat; two compression sheets of the regulating bracket are respectively located on two sides of the fixed seat and have a gap with the fixed seat; one end of the pin shaft is provided with a locking nut, and the other end thereof is provided with a regulating handle, and the regulating handle and the compression sheets are provided with regulating cams matched with each other; first teeth are arranged on the toothed plate; and the toothed block is provided with second teeth matched with the first teeth. The steering column disclosed by the invention greatly increases the axial retaining force of the steering column, and when collision and crumple occurs, the energy can be absorbed regardless of axial adjustment position of the steering column, and the problem that an ordinary steering column clamped by relying on the friction starts to absorb the energy only at the shortest axial adjustment position is avoided.

Description

Steering column for vehicles
Technical field
The present invention relates to steering column for vehicles technical field, the steering column for vehicles that particularly a kind of axial confining force is larger.
Background technology
As everyone knows, after collision happens, kinematic velocity changes a lot instantaneously, and passenger can continue preshoot due to inertia, collide with hard thing such as bearing circle, the instrument carrier panel etc. in front in car, i.e. secondary collision, and the secondary collision major cause that occupant is injured often.
Since safety air bag appears in nineteen fifties, people achieve considerable progress in the active and passive security fields of automobile.With regard to passive security field, it is even multistage that safety air bag develops into present twin-stage by the single-stage in past, and gas generator is also developed into hybrid etc. by initial pyrotechnic, ECU also develops to intelligent direction gradually through the development of multiaspect; Safety strap has also become basically universal belt with pre-load device.Can say, the safety measure of present vehicle is very perfect.
But, for the vehicle of some type, emphasis is minivan, due to the restriction of interior space, the distance of chaufeur range direction dish is very limited, and vehicle does not have long vehicle head as crusherbull zone district, once collide, the time of chaufeur and bearing circle generation secondary collision will be very short, and owing to invading in Steering gear and bearing circle (Steering gear Chao Chenei motion vertically), cause thoroughly opening from colliding the deficiency of time that secondary collision occurs to make safety air bag, and safety air bag momentum is upon deployment very large, as come in contact in the process, very large injury will be caused to chaufeur.
Existing adjustable steering column place in operation already, more to the Steering gear regulated with two, the Steering gear that four-way regulates is less.The four-way of small part middle and high end car system configuration regulates the complex structure of Steering gear, and cost of manufacture is high.Current four-way regulates the catch gear of Steering gear, and coupling mechanism force majority is that the maximum static friction force of dependence two clamping elements (metal piece and metal piece or metal piece and Plastic Parts) maintains.When collide crumple time, first Steering gear overcomes the maximum static friction force of clamping element, after slippage to the extreme lower position of axial adjustment, just starts energy-absorbing.Due to four-way regulate the Steering gear impact locking factor of confining force and part more, often have confining force deficiency, unlock after the problem such as excessive, the regulating handle looseness of adjustment force produce.
In addition, some four-ways regulate Steering gear not have anti-disengaging device, and in transport or fitting process, lower tubular column is easily separated, makes troubles to car load assembly manipulation.Some anti-disengaging devices take up room greatly, and assembling is complicated, and cost of manufacture is high.Some anti-disengaging devices can affect adjustment operation power, as adopted the mode of slotting on tubing string, the out of roundness of tubing string can be made like this to increase, have impact on the axial slip of tubing string, and cause tubing string adjustment force to become large, operation comfort is deteriorated.These problems are not the decline causing Steering gear safety performance above, cause the decline of car load assembly performance and driver's operation comfort energy exactly.
Therefore, how to avoid the general Steering gear relying on friction force clamping, only just can start the drawback of energy-absorbing in the shortest position of axial adjustment, become the technical matters that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of steering column for vehicles, to avoid the general Steering gear relying on friction force clamping, only just can start the drawback of energy-absorbing in the shortest position of axial adjustment.
For achieving the above object, the invention provides following technical scheme:
A kind of steering column for vehicles, comprises interior tube column and one end and is set in outer tube column on described interior tube column, also comprise:
Be arranged on the permanent seat on described outer tube column, which is provided with the axially extended chute along described outer tube column;
Regulate support, two clamping piece is separately positioned on the both sides of described permanent seat, and and between described permanent seat, there is gap;
Be each passed through the bearing pin of the chute on two clamping pieces of described adjustment support and described permanent seat, one end of described bearing pin is provided with jam nut, the other end is provided with regulating handle, and the clamping piece of described regulating handle and described adjustment support is provided with the adjusting cam cooperatively interacted;
Be arranged at the tooth plate on described permanent seat, described tooth plate is provided with the first teeth;
Be arranged at the tooth block on described adjustment support, described tooth block is provided with the second teeth for coordinating with described first teeth.
Preferably, in above-mentioned steering column for vehicles, also comprise spring perch and spring;
Described tooth plate offers the axially extended spring perch chute of described outer tube column, one end of described spring perch is stretch into the boss in described spring perch chute, and the other end is spring retainer platform;
Described spring one end is positioned described spring retainer platform, and the other end is positioned described tooth block.
Preferably, in above-mentioned steering column for vehicles, described tooth plate offers the axially extended tooth block chute of described outer tube column;
Described tooth block is provided with the tooth block boss coordinated with described tooth block slide, the circular hole passed through for described bearing pin and the spill circular groove with described circular hole coaxial is provided with in the middle of described tooth block boss, described spring one end is by described spill circular groove location, and described second teeth are arranged on described tooth block boss.
Preferably, in above-mentioned steering column for vehicles, described tooth block boss is divided into upper and lower two parts by described spill circular groove, and two parts tooth block boss is equipped with described second teeth;
Described first teeth are arrange two rows that described second teeth coordinate respectively with two.
Preferably, in above-mentioned steering column for vehicles, also comprise the sliding retention sleeve be arranged between described interior tube column and described outer tube column, this sliding retention sleeve and described interior tube column free-running fit, with described outer tube column interference fit.
Preferably, in above-mentioned steering column for vehicles, described interior tube column is provided with glide mirror (plane), and described outer tube column is provided with the tapped bore corresponding with described glide mirror (plane), described tapped bore is provided with the screw assembly be mated, and described screw assembly enters in described glide mirror (plane) after tightening.
Preferably, in above-mentioned steering column for vehicles, the clamping piece of described adjustment support both sides is respectively equipped with corresponding sipes hole, described bearing pin is through described sipes hole.
Preferably, in above-mentioned steering column for vehicles, the edge of described clamping piece has turnup structure;
The clamping piece of described adjustment support both sides is respectively equipped with corresponding elongated slot, and described elongated slot is arranged at the below in described sipes hole.
Preferably, in above-mentioned steering column for vehicles, the chute opposite of described permanent seat is provided with wide elongated slot and two fixed orifices;
Described tooth plate is provided with the oblong boss coordinated with described wide elongated slot, and the both sides of described oblong boss are provided with two pyramidal projections coordinated with two fixed orifices respectively.
Preferably, in above-mentioned steering column for vehicles, described permanent seat is welded on described outer tube column.
As can be seen from above-mentioned technical scheme, steering column for vehicles provided by the invention, when regulating handle locking rotation, the adjusting cam of pair of meshing carries out relatively rotating causing lift to increase, and in get rid of the endplay of permanent seat and adjustment support along bearing pin after, tube column and outer tube column are locked.When regulating handle unclamps rotation, the adjusting cam of pair of meshing carries out retrograde rotation and causes lift to reduce, and permanent seat increases with the endplay regulating support along bearing pin, and tubing string unlocks, and now tubing string can carry out axis or radiai adjustment.
The clamping mode that the present invention is engaged by tooth, greatly can improve the axial confining force of Steering gear, and when collide crumple time, no matter Steering gear is in any position of axial adjustment, can energy-absorbing, avoid the general Steering gear relying on friction force clamping, only just can start energy-absorbing in the shortest position of axial adjustment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the steering column for vehicles that Fig. 1 provides for the embodiment of the present invention;
The birds-eye view of the steering column for vehicles that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the cutaway view of Fig. 2 along A-A line;
Fig. 4 is the cutaway view of Fig. 2 along B-B line;
The exploded view of the reciprocal latch structure that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the adjustment support that Fig. 6 provides for the embodiment of the present invention;
The structural representation of the outer tube column that Fig. 7 provides for the embodiment of the present invention and permanent seat soldering member.
Detailed description of the invention
The invention discloses a kind of steering column for vehicles, to avoid the general Steering gear relying on friction force clamping, only just can start the drawback of energy-absorbing in the shortest position of axial adjustment.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 7, the structural representation of the steering column for vehicles that Fig. 1 provides for the embodiment of the present invention; The birds-eye view of the steering column for vehicles that Fig. 2 provides for the embodiment of the present invention; Fig. 3 is the cutaway view of Fig. 2 along A-A line; Fig. 4 is the cutaway view of Fig. 2 along B-B line; The exploded view of the reciprocal latch structure that Fig. 5 provides for the embodiment of the present invention; The structural representation of the adjustment support that Fig. 6 provides for the embodiment of the present invention; The structural representation of the outer tube column that Fig. 7 provides for the embodiment of the present invention and permanent seat soldering member.
The steering column for vehicles that the embodiment of the present invention provides, comprises interior tube column 1 and one end and is set in outer tube column 3 on interior tube column 1, of the present inventionly focuses on, and also comprises permanent seat 5, regulates support 9, bearing pin 10, tooth plate 7 and tooth block 8.
Wherein, permanent seat 5 is arranged on outer tube column 3, and preferably permanent seat 5 is welded on outer tube column 3.Permanent seat 5 is provided with the axially extended chute 501 along outer tube column 3.Regulate two clamping pieces of support 9 to be separately positioned on the both sides of permanent seat 5, and and between permanent seat 5, there is gap.
Bearing pin 10 be each passed through regulate support 9 two clamping pieces (clamping piece for be positioned at regulate support 9 both sides, for being fixed the plate-type structural piece of seat 5 both sides) and permanent seat 5 on chute 501, because the axis of chute 501 along outer tube column 3 extends, interior tube column 1 and outer tube column 3 is therefore made to have the degree of freedom of axial relative movement.
One end of bearing pin 10 is provided with jam nut 15, and the other end is provided with regulating handle 6, and the clamping piece of regulating handle 6 and adjustment support 9 is provided with the adjusting cam 11 cooperatively interacted.Tooth plate 7 is arranged on permanent seat 5, and tooth plate 7 is provided with the first teeth 705, and tooth block 8 is arranged at and regulates on support 9, and tooth block 8 is provided with the second teeth 802 for coordinating with the first teeth 705.
During installation, bearing pin 10 is successively through regulating handle 6, adjusting cam 11(a pair), regulate support 9, the chute 501 of permanent seat 5, tooth plate 7, tooth block 8, end face bearing 14, last fastening by jam nut 15, bearing pin 10 can make axial slip along the chute 501 of permanent seat 5.
Steering column for vehicles provided by the invention, when rotation locked by regulating handle 6, the adjusting cam 11 of pair of meshing carries out relatively rotating causing lift to increase, and in get rid of the endplay of permanent seat 5 and adjustment support 9 along bearing pin 10 after, tube column 1 and outer tube column 3 are locked.When regulating handle 6 unclamps rotation, the adjusting cam 11 of pair of meshing carries out retrograde rotation and causes lift to reduce, permanent seat 5 increases with the endplay regulating support 9 along bearing pin 10, and tubing string unlocks, and now tubing string (interior tube column 1 and outer tube column 3) can carry out axis or radiai adjustment.
When regulating handle 6 is locked, tooth block 8 is engaged by serration with tooth plate 7, when regulating handle 6 unclamps, recovers gap between tooth block 8 and tooth plate 7.The clamping mode that the present invention is engaged by tooth, greatly can improve the axial confining force of Steering gear, and when collide crumple time, no matter Steering gear is in any position of axial adjustment, can energy-absorbing, avoid the general Steering gear relying on friction force clamping, only just can start energy-absorbing in the shortest position of axial adjustment.
In order to optimize technique scheme further, the present invention also can comprise spring perch 12 and spring 13;
Tooth plate 7 offers the axially extended spring perch chute 703 of outer tube column 3, one end of spring perch 12 is the boss 121 stretched in spring perch chute 703, and the other end is spring retainer platform 122;
Spring 13 one end is positioned spring retainer platform 122, and the other end is positioned tooth block 8.
When regulating handle 6 unclamps rotation, adjusting cam 11 carries out relatively rotating causing lift to reduce, the lift reduced adds the mutual gap between all the other assembly parts, support 9 planar inner and permanent seat 5 and tooth plate 7 planar outboard is regulated to produce gap, first teeth 705 of tooth plate 7 and the second teeth 802 of tooth block 8 depart under the screen resilience effect of spring 13, generation gap, crown top.Now tubing string can carry out axis or radiai adjustment.Under the application force of spring 13, the loosening gap between each part is eliminated, thus avoids the problem of regulating handle 6 looseness.
When rotation locked by regulating handle 6, adjusting cam 11 carries out retrograde rotation and causes lift to increase, the lift increased eliminates the mutual gap between all the other assembly parts, support 9 planar inner and permanent seat 5 and tooth plate 7 planar outboard is regulated to compress, spring 13 pressurized shortens, first teeth 705 of tooth plate 7 and the second teeth 802 of tooth block 8 engage, and after relevant assembly part gets rid of endplay along the axis of bearing pin 10, tubing string is locked.
Because the gripping power of tooth engagement is very large, only has the intermeshing tooth of destruction to mobile.So the clamping mode of this kind of tooth engagement, greatly can improve the axial confining force of Steering gear, and when collide crumple time, no matter Steering gear is in any position of axial adjustment, can energy-absorbing, avoid the general Steering gear relying on friction force clamping, only just can start energy-absorbing in the shortest position of axial adjustment.
In order to optimize technique scheme further, tooth plate 7 offers the axially extended tooth block chute 704 of outer tube column 3; Tooth block 8 is provided with the tooth block boss 801 with tooth block chute 704 bearing fit, the circular hole 803 passed through for bearing pin 10 and the spill circular groove 804 coaxial with circular hole 803 is provided with in the middle of tooth block boss 801, spring 13 one end is located by spill circular groove 804, and the second teeth 802 are arranged on tooth block boss 801.Tooth block boss 801 is divided into upper and lower two parts by spill circular groove 804, and two parts tooth block boss 801 is equipped with the second teeth 802; First teeth 705 are ranked second two rows that teeth 802 coordinate respectively with two.
Tooth block 8 is provided with the tooth block boss 801 of a similar parallelogram, is provided with circular hole 803 in the middle of tooth block boss 801 and passes through for bearing pin 10, and on tooth block boss 801, plane is provided with two and ranked second teeth 802 and ranked first teeth 705 with two on tooth plate 7 and coordinate.Tooth block 8 has the one side of tooth block boss 801, and fit with outside adjustment support 9, another side and end face bearing 14 are fitted, end face bearing 14 another side pressing jam nut 15.
In order to optimize technique scheme further, the present invention also can comprise the sliding retention sleeve 2 be arranged between interior tube column 1 and outer tube column 3, and this sliding retention sleeve 2 and interior tube column 1 free-running fit, with outer tube column 3 interference fit.Sliding retention sleeve 2 can not be excessive with the gap of interior tube column 1, and the smooth slippage of principal security inner and outer pipe cylinder, excessive clearance easily causes abnormal sound.
Interior tube column 1 is provided with glide mirror (plane) 101, and outer tube column 3 is provided with the tapped bore 301 corresponding with glide mirror (plane) 101, and tapped bore 301 is provided with the screw assembly 4 be mated, and screw assembly 4 enters in glide mirror (plane) 101 after tightening.
The axle head of screw assembly 4 and the glide mirror (plane) 101 of interior tube column 1 still have certain interval, but the distance of the axle head of described screw assembly 4 and interior tube column 1 axial line is less than the outer radius of a circle of interior tube column 1.Screw assembly 4 can carry out axial slip and small rotation above the glide mirror (plane) 101 of interior tube column 1, when the glide mirror (plane) 101 exceeding interior tube column 1 contacts with interior tube column 1 cylindrical, axial slip or the terminating rotation of screw assembly 4 can be caused because the outer radius of a circle of interior tube column 1 is comparatively large.Interior tube column 1 and outer tube column 3, under the restriction of screw assembly 4, avoid and depart from and rotate.Again because the cylindrical of interior tube column 1 processes glide mirror (plane) 101, do not change endoporus state, within the circularity of tube column 1 can not change, thus interior tube column 1 and the tolerance clearance of sliding retention sleeve 2 can not be affected, make inner and outer pipe cylinder axis to smooth slippage.Screw assembly+tapped bore+glide mirror (plane) three forms Anti-isenagage structure, and this kind structure is simple, cost of manufacture is low, easy for installation, reliable and stable.
In order to optimize technique scheme further, regulate on the clamping piece of support 9 both sides and be respectively equipped with corresponding sipes hole 901, bearing pin 10 is through sipes hole 901.When adjusting cam 11 and tooth block 8 are along 901 slippage of sipes hole, Steering gear realizes radiai adjustment function.
The edge of clamping piece has turnup structure 903; Regulate on the clamping piece of support 9 both sides and be respectively equipped with corresponding elongated slot 902, elongated slot 902 is arranged at the below in sipes hole 901.
After regulating handle 6 is locked, regulate the stressed inside contraction of support 9, but turnup structure 903 causes the structure non-deformability regulating support 9 strong, consumes the coupling mechanism force of regulating handle 6.And when shrinking, because the non-deformability inside turnup structure 903 to locate the inner side of non-flange much larger than another, cause inside dimensions two place systolic dyssynchrony, thus cause regulate inside support 9 with permanent seat 5 outside binding face uneven, and then cause locking confining force not enough.Two described elongated slots 902 reduce the resistance to deformation power regulating support 9 two sides, increase the effective area of contact after regulating handle 6 locking, thus improve gripping power, eliminate locking and keep hypodynamic problem.
Chute 501 opposite of permanent seat 5 is provided with wide elongated slot 502 and two fixed orifices 503; Tooth plate 7 is provided with the oblong boss 701 coordinated with wide elongated slot 502, and the both sides of oblong boss 701 are provided with two pyramidal projections 702 coordinated with two fixed orifices 503 respectively.
Structure process and assemble of the present invention is simple, stable performance, and outer tube cylinder axis can independent operating to regulatory function and collision crumple defencive function, non-interference, can carry out large batch of suitability for industrialized production.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (9)

1. a steering column for vehicles, comprises interior tube column (1) and one end and is set in outer tube column (3) on described interior tube column (1), it is characterized in that, also comprise:
Be arranged on the permanent seat (5) on described outer tube column (3), which is provided with the axially extended chute (501) along described outer tube column (3);
Regulate support (9), two clamping piece is separately positioned on the both sides of described permanent seat (5), and and between described permanent seat (5), there is gap;
Be each passed through the bearing pin (10) of the chute (501) on two clamping pieces of described adjustment support (9) and described permanent seat (5), one end of described bearing pin (10) is provided with jam nut, the other end is provided with regulating handle (6), and the clamping piece of described regulating handle (6) and described adjustment support (9) is provided with the adjusting cam (11) cooperatively interacted;
Be arranged at the tooth plate (7) on described permanent seat (5), described tooth plate (7) is provided with the first teeth (705);
Be arranged at the tooth block (8) on described adjustment support (9), described tooth block (8) is provided with the second teeth (802) for coordinating with described first teeth (705);
Spring perch (12) and spring (13), described tooth plate (7) offers the axially extended spring perch chute (703) of described outer tube column (3), one end of described spring perch (12) is for stretching into the boss (121) in described spring perch chute (703), the other end is spring retainer platform (122), described spring (13) one end is positioned described spring retainer platform (122), and the other end is positioned described tooth block (8).
2. steering column for vehicles as claimed in claim 1, is characterized in that, described tooth plate (7) offers the axially extended tooth block chute (704) of described outer tube column (3);
Described tooth block (8) is provided with the tooth block boss (801) with described tooth block chute (704) bearing fit, the circular hole (803) passed through for described bearing pin (10) and the spill circular groove (804) coaxial with described circular hole (803) is provided with in the middle of described tooth block boss (801), described spring (13) one end is by described spill circular groove (804) location, and described second teeth (802) are arranged on described tooth block boss (801).
3. steering column for vehicles as claimed in claim 2, it is characterized in that, described tooth block boss (801) is divided into upper and lower two parts by described spill circular groove (804), two parts tooth block boss (801) is equipped with described second teeth (802);
Described first teeth (705) are arrange two rows that described second teeth (802) coordinate respectively with two.
4. the steering column for vehicles as described in any one of claim 1-3, it is characterized in that, also comprise the sliding retention sleeve (2) be arranged between described interior tube column (1) and described outer tube column (3), this sliding retention sleeve (2) and described interior tube column (1) free-running fit, with described outer tube column (3) interference fit.
5. steering column for vehicles as claimed in claim 4, it is characterized in that, described interior tube column (1) is provided with glide mirror (plane) (101), described outer tube column (3) is provided with the tapped bore (301) corresponding with described glide mirror (plane) (101), described tapped bore (301) is provided with the screw assembly (4) be mated, and described screw assembly (4) enters in described glide mirror (plane) (101) after tightening.
6. the steering column for vehicles as described in claim 1-3 any one, it is characterized in that, the clamping piece of described adjustment support (9) both sides is respectively equipped with corresponding sipes hole (901), and described bearing pin (10) is through described sipes hole (901).
7. steering column for vehicles as claimed in claim 6, it is characterized in that, the edge of described clamping piece has turnup structure (903);
The clamping piece of described adjustment support (9) both sides is respectively equipped with corresponding elongated slot (902), and described elongated slot (902) is arranged at the below of described sipes hole (901).
8. the steering column for vehicles as described in claim 1-3 any one, is characterized in that, chute (501) opposite of described permanent seat (5) is provided with wide elongated slot (502) and two fixed orifices (503);
Described tooth plate (7) is provided with the oblong boss (701) coordinated with described wide elongated slot (502), and the both sides of described oblong boss (701) are provided with two pyramidal projections (702) coordinated with two fixed orifices (503) respectively.
9. the steering column for vehicles as described in claim 1-3 any one, is characterized in that, described permanent seat (5) is welded on described outer tube column (3).
CN201210508641.9A 2012-12-03 2012-12-03 Steering column of automobile Active CN102963414B (en)

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CN201484480U (en) * 2009-09-07 2010-05-26 四川绵阳三力股份有限公司 Adjustable steering column of motor vehicle
CN102167073A (en) * 2011-03-15 2011-08-31 四川绵阳三力股份有限公司 Steering column and sliding retention sleeve thereof

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Denomination of invention: Regulating mechanism for automobile steering column

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