CN101927782B - Collapse energy-absorption mechanism for steering column - Google Patents
Collapse energy-absorption mechanism for steering column Download PDFInfo
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- CN101927782B CN101927782B CN2010102570891A CN201010257089A CN101927782B CN 101927782 B CN101927782 B CN 101927782B CN 2010102570891 A CN2010102570891 A CN 2010102570891A CN 201010257089 A CN201010257089 A CN 201010257089A CN 101927782 B CN101927782 B CN 101927782B
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- steering column
- torsion bar
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Abstract
The invention provides a collapse energy-absorption mechanism for a steering column, and belongs to the technical field of automobiles. The invention solves the problem that the conventional energy-absorption steering column has not obvious overall energy-absorption effect. The collapse energy-absorption mechanism for the steering column is arranged between a crossbeam of a vehicle instrument board and the steering column, and comprises a fixed support fixedly connected with the crossbeam of the vehicle instrument board and a connecting support fixedly connected with the steering column; the fixing support is fixedly connected with a torsion bar capable of elastically deforming; the connecting support is provided with two symmetrical guide sliding holes; two ends of the torsion bar are respectively positioned at the two guide sliding holes; and the connecting support is provided with a force guiding structure capable of transferring the impact force stressed on the steering column to the torsion bar. The collapse energy-absorption mechanism has the advantages of good energy-absorption effect and the like, and can make the steering column stably and fully absorb the energy.
Description
Technical field
The invention belongs to automobile technical field, relate to the collapse energy-absorption mechanism of a kind of energy absorber, particularly a kind of car steering tube column.
Background technology
When automobile bumped, what chaufeur was caused main threat was vehicle steering and Steering gear.Energy when automobile receives head-on crash makes its anterior plastic deformation that takes place, and the Steering gear and the steering shaft that are positioned at automotive front promptly move to chaufeur chest direction under the effect of impact force backward, and this is called initial collision.The energy of this collision is to absorb through axle assembly energy-absorption type structure under the turning to of Steering gear front end, prevents or reduce it to directly act on one's body the chaufeur, causes personal injury.On the other hand, when automobile bumped, chaufeur was had by effect of inertia to rush at the motion of bearing circle, is called secondary collision.The motion of chaufeur itself can a part be absorbed by automotive safety restraint device, air bag etc., and another part can be directly passed to bearing circle and Steering gear system.This part energy also wants direction of passage dish and Steering gear system to absorb, and injures chaufeur to prevent to exceed the human body ability to bear.This except satisfying the conventional function of Steering gear, and when automobile generation head-on crash, the absorbing impact energy prevents or reduces that the Steering gear that collision energy injures chaufeur is called energy-absorbing steering column effectively.
The metal construction of the most of employing of steering column at present plastic deformation energy-absorbing, commonly used is the plastic deformation of sheet metal.Because the influence of factors such as technology, manufacturing and the stressed complicacy of steering column, there are shortcomings such as energy-absorbing is insufficient, conquassation power instability in common endergonic structure.It is to press a little at last column casing and following column casing connecting portion that traditional energy-absorbing steering column also has a kind of, fixes upper and lower column casing through the riveting point, and this riveting point can crumple absorb the impact energy that is produced by secondary collision when being hit.This traditional riveting point type energy absorbing steering cloumn is when bumping, and the diametral load that receives shrinks after the load greater than design-calculated can conquassation, but in the conquassation process, can produce very big offset placed load, on original basis of shrinking load, has increased about 2000N.But it is limited that this structure absorbs the impact energy of secondary collision, is not easy control, and it is uncontrollable at all that secondary collision is produced the offset placed load that increases.Domestic part is adopted the automobile that can not retrain safety strap, and the chest to chaufeur produces very grievous injury easily, forces to collide under the situation about requiring in country " CANCP ", can't be through " Samsung " above authentication.
For this reason, people have proposed various solutions through long-term exploration, and some has also applied for patent.For example; Chinese patent discloses a kind of ball crushing energy absorbing steering column [publication number is: CN 101643084A], and it is made up of last column casing, following column casing and ball sliding bush, and last column casing and lower prop jacket casing are fitted together; And between last column casing and the following column casing is axially movable cooperation; There is the toroidal cavity chamber at suit place between last column casing and the following column casing, and this toroidal cavity chamber is made up of the tolerance clearance between last column casing and the following column casing, and ball sliding bush is contained in the tolerance clearance between column casing and the following column casing.
Though the energy absorbing steering cloumn of this structure is control and adjusting easily, overall energy-absorbing effect is not obvious.When automobile bumped, the energy-absorbing post can not be regulated step by step, caused chaufeur and bearing circle direct contact, caused damage.And the impact energy of the energy absorbing steering cloumn of this structure is limited, and when automobile generation sharp impacts, the energy-absorbing post will be damaged, and does not have the effect of energy-absorbing protection.Moreover it is uncontrollable at all to produce the offset placed load that increases at secondary collision, and the loss that causes also can't be estimated.
Summary of the invention
The objective of the invention is to have the problems referred to above to existing technology; It is good to have proposed a kind of energy-absorbing effect; Can conquassation be tried hard to keep is held in the less fluctuation range, can make steering column can be steadily, energy-absorbing is abundant, the collapse energy-absorption mechanism of the steering column of stable performance.
The object of the invention can be realized through following technical proposal:
The collapse energy-absorption mechanism of this steering column; Be arranged between Vehicular instrument panel crossbeam and the steering column; It is characterized in that; This structure comprises the fixed support that is connected with the Vehicular instrument panel crossbeam and is connected support with Steering gear is connected, be fixed with on the described fixed support can plastic deformation torsion bar, the guiding slide opening that has the twice symmetry on the described connection support; The two ends of above-mentioned torsion bar lay respectively at two guiding slide opening places, have the power of the leading structure that can the impulsive force that steering column receives be passed on the torsion bar on the described connection support.
The collapse energy-absorption mechanism of this steering column, when collision took place, steering column received the impact of human body; And steering column be connected support and connect, connect support impact is passed to torsion bar, when impulsive force surpasses the loadlimit of torsion bar; The torsion bar plastic deformation that can twist; Lead the power structure and move downward with steering column this moment, slides in the two ends that connect the relative torsion bar of guiding slide opening on the support, thereby alleviate the antagonistic force to human body.The collapse energy-absorption mechanism of this steering column utilizes the principle of torsion bar plastic deformation, and can conquassation be tried hard to keep is held in the less fluctuation range, make steering column can be steadily, fully conquassation.The effect of leading the power structure mainly is that the impulsive force with steering column is delivered on the torsion bar, and support bracket fastened effect is column assy is fixed on the dashboard cross member; Mainly connect fixed support and steering column and connect support.
In the collapse energy-absorption mechanism of above-mentioned steering column, the described power of leading structure is to be connected in the tooth bar that connects on the support and the contact element of torsion bar sidepiece protrusion, and works as the contact element of torsion bar plastic deformation on it and can contact with tooth bar.
Under normal circumstances, there is the gap between tooth bar and the contact element, when collision takes place; The impact of human body passes to torsion bar, when impulsive force surpasses the loadlimit of torsion bar, contacts with tooth bar owing to be located at torsion bar sidepiece contact element; The torsion bar plastic deformation that can twist; This moment, the rack drives steering column moved downward, and slided in the two ends that connect the relative torsion bar of guiding slide opening on the support, thereby alleviated the antagonistic force to human body.
In the collapse energy-absorption mechanism of above-mentioned steering column, described contact element is the gear that is connected on the torsion bar.
When the rack drives steering column moves downward, rack and pinion engagement contact, when moving downward, gear can roll by relative tooth bar again, in rolling process, because gear and torsion bar be connected, so the torsional deflection of plasticity can take place torsion bar.In the relative spur roller gear process of tooth bar, the guiding slide opening that the two ends of torsion bar connect on the support relatively slides.The collapse energy-absorption mechanism of this steering column; The radius of diameter and gear through the design torsion bar just can make things convenient for, adjust effectively the size of conquassation power; Length through the guiding slide opening is set just can be controlled crush stroke, and energy-absorbing is abundant, stable and reliable for performance during conquassation.
In the collapse energy-absorption mechanism of above-mentioned steering column, described contact element is connected in the torsion bar middle part.
The purpose that is provided with like this is that when the impulsive force of human body passed to torsion bar, tooth bar can contact with contact element; If gear is located at the side locations of torsion bar; Then torsion bar is not yielding, thus contact element is located at the medium position of torsion bar, like this when collision takes place; The torsion bar distortion that very easily twists, energy-absorbing effect is obvious.
In the collapse energy-absorption mechanism of above-mentioned steering column, described torsion bar is processed by metallic material.Torsion bar is easier at the deformation ratio that twists, and also can change torsion bar.
In the collapse energy-absorption mechanism of above-mentioned steering column, the two ends of said torsion bar have the piston shoes that are block, and piston shoes are positioned at above-mentioned guiding slide opening place.
When collision takes place; Steering column receives the impact of human body; When impulsive force surpassed the loadlimit of torsion bar, the torsion bar plastic deformation that can twist was in the process that the rack drives steering column moves downward; Piston shoes move relative to the slide opening that leads, and just torsion bar moves with respect to the guiding slide opening.
Compared with prior art, the collapse energy-absorption mechanism of this steering column has the following advantages:
1, adopt unique endergonic structure, utilize the principle of torsion bar plastic deformation, can conquassation be tried hard to keep is held in the less fluctuation range, make steering column can be steadily, abundant conquassation.
2, simple in structure, reliable, the rack-and-gear cooperating is stable, and can eliminate the influence of the unbalance load of steering column to conquassation power.
3, just can make things convenient for, adjust effectively the size of conquassation power through the diameter of design torsion bar and the radius of adjustment gear, just can control crush stroke through the length that chute is set, energy-absorbing is abundant, stable and reliable for performance during conquassation.
Description of drawings
Fig. 1 is the structural representation of the collapse energy-absorption mechanism of this steering column.
Fig. 2 is the structural representation of another state of collapse energy-absorption mechanism of this steering column.
Fig. 3 is the lateral plan of the collapse energy-absorption mechanism of this steering column.
Fig. 4 is the cutaway view of the collapse energy-absorption mechanism of this steering column.
Among the figure, 1, fixed support; 2, connect support; 21, guiding slide opening; 3, torsion bar; 31, piston shoes; 4, tooth bar; 5, contact element.
The specific embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technical scheme of the present invention is done further to describe, but the present invention is not limited to these embodiment.
As illustrated in fig. 1 and 2; The collapse energy-absorption mechanism of this steering column is arranged between Vehicular instrument panel crossbeam and the steering column, and this structure comprises the fixed support 1 that is connected with the Vehicular instrument panel crossbeam and is connected support 2 with Steering gear is connected; Fixed support 1 is spill, connects support 2 and also is spill.The effect of fixed support 1 is column assy is fixed on the dashboard cross member, mainly is to connect fixed support 1 and steering column and connect support 2.
As shown in Figure 1, be fixed with the torsion bar of processing by metallic material 3 on the fixed support 1, the two ends of torsion bar 3 have the piston shoes 31 that are block; Like Fig. 1, shown in 2 and 3, connect the guiding slide opening 21 that has the twice symmetry on the both sides of support 2, and torsion bar 3 two ends are block piston shoes 31 and lay respectively at two guiding slide opening 21 places.The plasticity of torsion bar 3 is good, is taking place to return to original state after the plastic deformation, and when receiving impulsive force easy fracture not.
As shown in figs. 1 and 4; Medium position place at torsion bar 3 is fixed with contact element 5, and the contact element 5 in the present embodiment is a gear, gear and torsion bar 3 concentric settings; Be fixed with tooth bar 4 connecting on the bottom of support 2, the gear when torsion bar 3 plastic deformation on it can contact with tooth bar 4 engagements.Under normal circumstances, there is the gap between tooth bar 4 and the gear, when collision takes place; The impact of human body passes to torsion bar 3, when impulsive force surpasses the loadlimit of torsion bar 3, owing to be located at wheel and rack 4 contacts on the torsion bar 3; Torsion bar 3 plastic deformation that can twist; Utilize the principle of torsion bar 3 plastic deformation, can conquassation be tried hard to keep is held in the less fluctuation range, make steering column can be steadily, fully conquassation.Used conquassation mechanism conquassation fluctuation scope is ± 500N that the collapse energy-absorption mechanism of this steering column can reach ± 250N at present.
The collapse energy-absorption mechanism of this steering column, when collision took place, tooth bar 4 contacted with gear; Steering column receives the impact of human body; And steering column be connected support 2 and connect, connect support 2 impact is passed to torsion bar 3, when impulsive force surpasses the loadlimit of torsion bar 3; Torsion bar 3 plastic deformation that can twist; Lead the power structure and move downward with steering column this moment, and the piston shoes 31 that connect the two ends setting of the guiding slide opening 21 relative torsion bars 3 on the support 2 slide, thereby alleviate the antagonistic force to human body.
The collapse energy-absorption mechanism of this steering column utilizes the principle of torsion bar 3 plastic deformation, and can conquassation be tried hard to keep is held in the less fluctuation range, make steering column can be steadily, fully conquassation.And it is simple in structure, reliable, and rack-and-gear 4 cooperatings are stable, and can eliminate the influence of the unbalance load of steering column to conquassation power.
The collapse energy-absorption mechanism of this steering column is also more convenient to the adjusting of conquassation power size; Just can make things convenient for, adjust effectively the size of conquassation power through diameter that designs torsion bar 3 and the radius of adjusting gear; Length through chute is set just can be controlled crush stroke, and energy-absorbing is abundant, stable and reliable for performance during conquassation.
Specific embodiment described herein only is that spirit of the present invention is made casehistory.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as fixed support 1, connection support 2, guiding slide opening 21, torsion bar 3, piston shoes 31, tooth bar 4, contact element 5 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (3)
1. the collapse energy-absorption mechanism of a steering column; Be arranged between Vehicular instrument panel crossbeam and the steering column; It is characterized in that; This mechanism comprises the fixed support (1) that is connected with the Vehicular instrument panel crossbeam and is connected support (2) with Steering gear is connected, be fixed with on the described fixed support (1) can plastic deformation torsion bar (3), the guiding slide opening (21) that has the twice symmetry on the described connection support (2); The two ends of above-mentioned torsion bar (3) lay respectively at two guiding slide openings (21) and locate; Have the power of the leading structure that can the impulsive force that steering column receives be passed on the torsion bar (3) on the described connection support (2), the described power of leading structure is for being connected in the tooth bar (4) that connects on the support (2) and the contact element (5) of torsion bar (3) sidepiece protrusion, and works as the contact element (5) of torsion bar (3) plastic deformation on it and can contact with tooth bar (4); Described contact element (5) is for being connected in the gear on the torsion bar (3), and described contact element (5) is connected in torsion bar (3) middle part.
2. the collapse energy-absorption mechanism of steering column according to claim 1 is characterized in that, described torsion bar (3) is processed by metallic material.
3. the collapse energy-absorption mechanism of steering column according to claim 2 is characterized in that, the two ends of said torsion bar (3) have the piston shoes (31) that are block, and piston shoes (31) are positioned at above-mentioned guiding slide opening (21) and locate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102570891A CN101927782B (en) | 2010-08-19 | 2010-08-19 | Collapse energy-absorption mechanism for steering column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102570891A CN101927782B (en) | 2010-08-19 | 2010-08-19 | Collapse energy-absorption mechanism for steering column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101927782A CN101927782A (en) | 2010-12-29 |
| CN101927782B true CN101927782B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102570891A Expired - Fee Related CN101927782B (en) | 2010-08-19 | 2010-08-19 | Collapse energy-absorption mechanism for steering column |
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| Country | Link |
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| CN (1) | CN101927782B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103569186B (en) * | 2013-11-19 | 2016-08-17 | 浙江吉利汽车研究院有限公司 | A kind of crushing device of car steering tube column |
| CN103818428B (en) * | 2014-02-27 | 2016-06-08 | 长城汽车股份有限公司 | A kind of steering column crumple energy absorption device and column assy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0641705A1 (en) * | 1993-09-01 | 1995-03-08 | The Torrington Company Limited | Adjustable steering column assembly for a vehicle |
| US6183012B1 (en) * | 1998-03-03 | 2001-02-06 | Lemförder Nacam SA | Energy absorbing device with double spring means for steering columns |
| CN101048309A (en) * | 2004-10-28 | 2007-10-03 | 佛吉亚汽车内部设备工业公司 | Connecting device between a steering column and a motor vehicle body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5147133B2 (en) * | 2008-12-26 | 2013-02-20 | ダイハツ工業株式会社 | Steering device for vehicle |
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2010
- 2010-08-19 CN CN2010102570891A patent/CN101927782B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0641705A1 (en) * | 1993-09-01 | 1995-03-08 | The Torrington Company Limited | Adjustable steering column assembly for a vehicle |
| US6183012B1 (en) * | 1998-03-03 | 2001-02-06 | Lemförder Nacam SA | Energy absorbing device with double spring means for steering columns |
| CN101048309A (en) * | 2004-10-28 | 2007-10-03 | 佛吉亚汽车内部设备工业公司 | Connecting device between a steering column and a motor vehicle body |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2010-155475A 2010.07.15 |
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| Publication number | Publication date |
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| CN101927782A (en) | 2010-12-29 |
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Granted publication date: 20120718 Termination date: 20200819 |