CN101117129A - Steering mast automatically withdrawing system - Google Patents
Steering mast automatically withdrawing system Download PDFInfo
- Publication number
- CN101117129A CN101117129A CNA2006100619271A CN200610061927A CN101117129A CN 101117129 A CN101117129 A CN 101117129A CN A2006100619271 A CNA2006100619271 A CN A2006100619271A CN 200610061927 A CN200610061927 A CN 200610061927A CN 101117129 A CN101117129 A CN 101117129A
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- Prior art keywords
- cylinder sleeve
- push rod
- steering
- automatically withdrawing
- pushing block
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- Steering Controls (AREA)
Abstract
The invention discloses a steering column automatic crumple system which is provided with a gas generation device and a control unit connected with the gas generation device. The steering column of the invention consists of a cylinder sleeve and a push rod having a bulging push block on one end, wherein the push block is fixed in the cylinder sleeve, a spring is arranged in the cylinder sleeve to reset the push rod, the other end of the push rod passes through the bottom of the cylinder sleeve and is connected with a steering wheel, the push rod is connected with the bottom of the cylinder sleeve through a spline, hermetic sealing coordination is formed between the push rod and the bottom of the cylinder sleeve and also between the push block and the inner wall of the cylinder sleeve, a sealing cavity is formed between the push rod and the inner wall of the cylinder sleeve, an air outlet hole communicated with the cavity and an air inlet hole larger than the air outlet hole are formed on the cylinder sleeve, and the gas outlet of the gas generation device is communicated with the air inlet hole. The structure enables the steering column to break off and automatically retract in very short time in case of vehicle collision, thereby enabling the steering system to remain usable after collision.
Description
Technical field
The invention belongs to the vehicle steering system field, be meant especially a kind ofly can the utmost point after collision happens Steering gear to be collapsed broken and retraction automatically, afterwards steering swivel system spendable steering mast automatically withdrawing system still.
Background technology
As everyone knows, after the collision happens, kinematic velocity moment changes a lot, and the passenger is because inertia can continue preshoot, bump i.e. secondary collision, and the secondary collision injured major cause of occupant often with hard thing such as bearing circle, the instrument carrier panel etc. in the place ahead in the car.
Since safety air bag appearred in nineteen fifties, people had obtained considerable progress in master, the passive security field of automobile.With regard to the passive security field, safety air bag develops into present twin-stage even multistage by the single-stage in past, and gas generator is also developed into hybrid etc. by initial pyrotechnic, and ECU also develops to intelligent direction gradually through years of development; The safety strap belt with pre-load device that also become basically universal.We can say that the safety measure of present vehicle is very perfect.
But, vehicle for some type, emphasis is a minivan, because the restriction of interior space, the distance of chaufeur range direction dish is very limited, and because vehicle does not have the long vehicle head as the crusherbull zone district, in case bump, the time of chaufeur and bearing circle generation secondary collision will be very short, and since Steering gear and bearing circle in invade (Steering gear Chao Chenei motion vertically), cause from colliding deficiency of time that secondary collision takes place, and safety air bag momentum upon deployment is very large so that safety air bag is opened up hill and dale, as in this process, coming in contact, will cause very big injury to chaufeur.
Can collapse broken formula Steering gear place in operation very early, it has increased one or more connecting pins in the middle of Steering gear, and as Fig. 1, Steering gear is made up of first Steering gear 1 and second Steering gear, 2 two parts, and the two is by connecting pin 3 captive joints.This connecting pin is generally made by plastic or other material, has certain shearing strength value, can be cut off after collision happens, makes that Steering gear can be in axial shortening, thus the impact that alleviates the suffered bearing circle of chaufeur.But this design still will make chaufeur bear evil in certain wound.
Chinese patent provides a kind of telescopic steering axle device CN95121874 number.As shown in Figure 2.Normal condition is full of the gas of certain pressure in the steering axle device 120, make it keep certain intensity.If detect collision, then control electromagnetic valve 240 is opened so that outwards discharging has charged into steering axle device 120 gas inside.Thereby make steering axle device 120 longitudinally further shorten, slow down chaufeur and bearing circle and bump against the impact that causes, make the suffered impact of chaufeur reduce to minimum.
Need certain hour but the electromagnetic valve in this patent bleeds to remain, can not in the shortest time, not finish the retraction of Steering gear.
Summary of the invention
At foregoing, purpose of the present invention promptly is to provide a kind of and can the utmost point after collision happens Steering gear is collapsed broken and retraction automatically, afterwards steering swivel system spendable steering mast automatically withdrawing system still.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of steering mast automatically withdrawing system, be provided with Steering gear, it is characterized in that: this system also is provided with gas generating unit and the control unit that can receive the collision alarm of vehicle, wherein circuit is connected between gas generating unit and the control unit, this Steering gear protrudes the push rod that is formed with pushing block by a cylinder sleeve and an end to be formed, wherein this pushing block is fixed in this cylinder sleeve, in this cylinder sleeve, also be provided with and be used for spring that push rod is resetted, the other end of this push rod passes this cylinder sleeve and is connected with bearing circle, adopt spline to be connected between this push rod and the cylinder sleeve, between the bottom of this push rod and this cylinder sleeve and all form vapor seal between the inwall of pushing block and this cylinder sleeve and cooperate, between the inwall of push rod and cylinder sleeve, form a leak free cavity; Be formed with the deflation hole that communicates with this cavity and induction opening greater than this deflation hole on this cylinder sleeve, the air extractor duct of described gas generating unit enters the hole with this and is communicated with.
On the above-mentioned basis, wherein:
Described pushing block is to be fixed in this cylinder sleeve by connecting pin.
The control unit of described control unit and safety air bag integrates.
One end of described spring is replaced the bottom at pushing block, and the other end is to replace on cylinder sleeve.Perhaps, described cylinder sleeve is formed with the bottom, and described push rod is the bottom that passes this cylinder sleeve, and an end of described spring is the bottom that is fixed on cylinder sleeve, and the other end is to be fixed on the pushing block.
Described gas generating unit mainly is made up of electron excitation device, gas generant and casing assembly, and wherein the electron excitation device is connected with control unit by wire harness.
Described system also is provided with anchor fitting, and this anchor fitting is to be fixed on this cylinder sleeve, and this anchor fitting inside is formed with inner chamber, and described gas generating unit is to install to put in this inner chamber, and this inner chamber communicates with induction opening on the cylinder sleeve.Wherein, the outside face indent of described anchor fitting forms an arc groove, and this arc groove can be closely fitted with the periphery of cylinder sleeve, is formed with the outlet that communicates with the inner chamber of this anchor fitting on this arc groove, and this outlet while communicates with induction opening on the cylinder sleeve.
The present invention is compared to prior art, its advantage is, steering mast automatically withdrawing system of the present invention is to make Steering gear and drive steering handwheel bounce back rapidly by gas generating unit moment generation high pressure gas, increase the distance between chaufeur and the steering handwheel, alleviate the impact injury of the bearing circle that chaufeur is subjected to.With respect to collapsed broken Steering gear in the past, native system can more promptly make Steering gear and steering handwheel away from chaufeur after collision takes place, alleviate the injury that chaufeur is subjected to greatest extent, simultaneously since between the bottom of the push rod of Steering gear and cylinder sleeve two parts be that the employing spline is connected, so after the push rod of Steering gear resets, if needed, Steering gear will still can use.
Description of drawings
In order to be easy to explanation, the present invention is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 has now to collapse broken formula Steering gear scheme drawing.
Fig. 2 is the transparent view of the telescopic steering axle device of patent CN95121874 embodiment.
Fig. 3 is the cross-sectional view of first kind of embodiment of a kind of steering mast automatically withdrawing system of the present invention.
Fig. 4 is the cross-sectional view along the A-A hatching line gained among Fig. 3.
Fig. 5 is the gas generating unit structural representation of a kind of steering mast automatically withdrawing system of the present invention.
Fig. 6 is the anchor fitting plan structure scheme drawing of the gas generating unit of a kind of steering mast automatically withdrawing system of the present invention.
Fig. 7 is the cross-sectional view along the B-B hatching line gained of Fig. 6.
Fig. 8 is the cross-sectional view of second kind of embodiment of a kind of steering mast automatically withdrawing system of the present invention.
The specific embodiment
First kind of embodiment:
Please refer to Fig. 3, a kind of steering mast automatically withdrawing system of the present invention mainly comprises circuit bonded assembly control unit between Steering gear, gas generating unit and the gas generating unit, and is used for gas generating unit is fixed on anchor fitting on the Steering gear.Wherein this Steering gear is made up of the push rod 11 that cylinder sleeve 12 that is provided with the bottom and end protrusion are formed with pushing block, wherein this pushing block is positioned at this cylinder sleeve 12, and be fixed in this cylinder sleeve 12 by connecting pin 21, the bottom that the other end of this push rod 11 passes this cylinder sleeve 12 is connected with bearing circle, be to adopt spline to be connected (as shown in Figure 4 between the bottom of push rod 11 and cylinder sleeve 12, certainly cylinder sleeve 12 can not established the bottom, but make push rod 11 part chaps form spline and be connected again with between the cylinder sleeve 12), spline can transmit the tangential force of steering swivel system reliably.Between the bottom of this push rod 11 and this cylinder sleeve 12 and all form vapor seal between the inwall of pushing block and this cylinder sleeve 12 and cooperate, make simultaneously also to be formed with a leak free cavity 40 between the inwall of push rod 11 and cylinder sleeve 12; Also form two holes that communicate with this cavity 40 on this cylinder sleeve 12, little one is deflation hole 121, and big one is induction opening 122.The open end of this cylinder sleeve is that the steering swivel system by universal-joint and automobile links together.
Wherein connecting pin 21 is to be made by the material with certain shearing strength value, can be by material such as engineering plastics or acierals.Its effect is: be cut off after bearing certain shearing force, thereby make and lose axial constraint between the push rod 11 of Steering gear and the cylinder sleeve 12, the two can be moved in the axial direction.Under the normal circumstances, the intensity of connecting pin is wanted can guarantee not to be cut off under complex road condition.
Described anchor fitting 31 inside are formed with inner chamber 311, in this inner chamber 311 gas generating unit 32 are installed, and this inner chamber 311 communicates with induction opening 122 on second Steering gear; Gas generating unit 32 can produce high pressure gas rapidly, and high pressure gas can enter cavity 40 by inner chamber 311, induction opening 122, thereby makes the air pressure in the cavity 40 rise rapidly; When the pressure rises in the cavity 40 during to certain high pressure, high pressure promptly can force first Steering gear 11 to cut off connecting pins 21, continues to move downward along the inwall of second Steering gear 12; Steering gear 11 stops to move behind the Spring balanced of air pressure in the cavity 40 and spring 13; After this, the gases in the cavity 40 discharge by deflation hole 121, and along with the discharge of gas, the elastic force of spring 13 moves until resetting the Steering gear 11 of winning on slowly.
The anchor fitting 31 of gas generating unit can be obtained by the as cast method, as Fig. 6 and shown in Figure 7.Its material is not generally had specific (special) requirements, satisfy requirement of strength and get final product.Its outside face indent forms an arc groove 312, and this arc groove 312 can be closely fitted with the periphery of cylinder sleeve 12, and afterwards by welding or add modes such as snap ring is fixing, high pressure gas do not spill from the two junction and get final product when guaranteeing systemic effect.
Receive the collision alarm of vehicle when control unit after, make judgement rapidly, whether need to excite this device.Then send excitation signal to gas generating unit 32 by wire harness as needs, gas generating unit 32 produces high pressure gas rapidly, and high pressure gas enter cavity 40 by inner chamber 311, induction opening 122, thereby makes the air pressure in the cavity 40 rise rapidly; High pressure forces push rod 11 to promote pushing block and cuts off connecting pin 21, and the drive steering handwheel continues to move downward along the inwall of cylinder sleeve 12; The Spring balanced rear push-rod 11 and the pushing block of air pressure in cavity 40 and spring 13 stop to move.After this, the gas in the cavity 40 can discharge by deflation hole 121, and the elastic force of spring 13 makes push rod 11 and pushing block move until resetting on slow.Because the aperture of deflation hole 121 is very little, so the discharge of gas will be very slow, thereby the push rod 11 of Steering gear will be longer than the in-service time of secondary collision greatly with the reseting procedure of pushing block.In period, steering handwheel will increase apart from the distance of chaufeur at this section, thereby reduce the strength under shock that chaufeur is subjected to.
Because two parts are that the employing spline is connected between the bottom of the push rod 11 of Steering gear and cylinder sleeve 12, so after the push rod 11 of Steering gear resetted, if needed, Steering gear will still can use.
The control unit of this system can shared safety air bag control unit (change get final product part hardware and software section).
Second kind of embodiment:
Please refer to Fig. 8, its difference of comparing first kind of embodiment is: the spring 13 of present embodiment is arranged between the bottom of pushing block on the push rod 11 and cylinder sleeve 12, an end that is spring 13 is the bottom that is fixed on cylinder sleeve 12, and the other end is the pushing block bottom that is fixed on push rod 11.
Claims (8)
1. a steering mast automatically withdrawing system is provided with Steering gear, it is characterized in that: this system also is provided with gas generating unit and can receives the control unit of the collision alarm of vehicle, and wherein circuit is connected between gas generating unit and the control unit; This Steering gear protrudes the push rod that is formed with pushing block by a cylinder sleeve and an end to be formed, wherein this pushing block is fixed in this cylinder sleeve, in this cylinder sleeve, also be provided with and be used for spring that push rod is resetted, the other end of this push rod passes this cylinder sleeve and is connected with bearing circle, adopt spline to be connected between this push rod and the cylinder sleeve, between the bottom of this push rod and this cylinder sleeve and all form vapor seal between the inwall of pushing block and this cylinder sleeve and cooperate, between the inwall of push rod and cylinder sleeve, form a leak free cavity; Be formed with the deflation hole that communicates with this cavity and induction opening greater than this deflation hole on this cylinder sleeve, the air extractor duct of described gas generating unit enters the hole with this and is communicated with.
2. a kind of steering mast automatically withdrawing system as claimed in claim 1 is characterized in that: described pushing block is to be fixed in this cylinder sleeve by connecting pin.
3. a kind of steering mast automatically withdrawing system as claimed in claim 1 or 2 is characterized in that: an end of described spring is replaced the bottom at pushing block, and the other end is to replace on cylinder sleeve.
4. a kind of steering mast automatically withdrawing system as claimed in claim 1 or 2 is characterized in that: described cylinder sleeve is formed with the bottom, and described push rod is the bottom that passes this cylinder sleeve, and an end of described spring is the bottom that is fixed on cylinder sleeve, and the other end is to be fixed on the pushing block.
5. a kind of steering mast automatically withdrawing system as claimed in claim 1 is characterized in that: the control unit of described control unit and safety air bag integrates.
6. a kind of steering mast automatically withdrawing system as claimed in claim 1, it is characterized in that: described system also is provided with anchor fitting, this anchor fitting is to be fixed on this cylinder sleeve, this anchor fitting inside is formed with inner chamber, described gas generating unit is to install to put in this inner chamber, and this inner chamber communicates with induction opening on the cylinder sleeve.
7. a kind of steering mast automatically withdrawing system as claimed in claim 6, it is characterized in that: the outside face indent of described anchor fitting forms an arc groove, this arc groove can closely be fitted with the periphery of cylinder sleeve, be formed with the outlet that communicates with the inner chamber of this anchor fitting on this arc groove, this outlet communicates with induction opening on the cylinder sleeve simultaneously.
8. a kind of steering mast automatically withdrawing system as claimed in claim 1 is characterized in that: described gas generating unit mainly is made up of electron excitation device, gas generant and casing assembly, and wherein the electron excitation device is connected with control unit by wire harness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100619271A CN101117129A (en) | 2006-07-31 | 2006-07-31 | Steering mast automatically withdrawing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100619271A CN101117129A (en) | 2006-07-31 | 2006-07-31 | Steering mast automatically withdrawing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101117129A true CN101117129A (en) | 2008-02-06 |
Family
ID=39053435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100619271A Pending CN101117129A (en) | 2006-07-31 | 2006-07-31 | Steering mast automatically withdrawing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101117129A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211561A (en) * | 2011-05-05 | 2011-10-12 | 上海东方久乐汽车安全气囊有限公司 | Control method for steering wheel collapse and device using same |
| CN102407877A (en) * | 2011-08-30 | 2012-04-11 | 奇瑞汽车股份有限公司 | Electric steering transmission control device of automobile steering wheel and control method thereof |
| CN103192866A (en) * | 2013-01-07 | 2013-07-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Crushing system for steering column |
| CN104029665A (en) * | 2014-06-28 | 2014-09-10 | 浙江吉利控股集团有限公司 | Push rod assembly of vacuum booster |
| CN106364546A (en) * | 2016-10-21 | 2017-02-01 | 刘玲燕 | Connection shaft staggering device for steering wheel of car |
| CN106564526A (en) * | 2015-10-12 | 2017-04-19 | 上海汽车集团股份有限公司 | Vehicle and steering column assembly thereof |
| CN106627727A (en) * | 2016-10-21 | 2017-05-10 | 刘玲燕 | Steering wheel connecting shaft dislocation device for automobile |
| CN112413864A (en) * | 2020-11-25 | 2021-02-26 | 重庆瑞阳吉星科技有限公司 | Double-temperature-zone air conditioner controller |
| CN112644580A (en) * | 2021-01-21 | 2021-04-13 | 东风汽车集团股份有限公司 | Wire-controlled steering column and wire-controlled steering control method |
-
2006
- 2006-07-31 CN CNA2006100619271A patent/CN101117129A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211561A (en) * | 2011-05-05 | 2011-10-12 | 上海东方久乐汽车安全气囊有限公司 | Control method for steering wheel collapse and device using same |
| CN102407877A (en) * | 2011-08-30 | 2012-04-11 | 奇瑞汽车股份有限公司 | Electric steering transmission control device of automobile steering wheel and control method thereof |
| CN103192866A (en) * | 2013-01-07 | 2013-07-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Crushing system for steering column |
| CN103192866B (en) * | 2013-01-07 | 2015-06-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Crushing system for steering column |
| CN104029665A (en) * | 2014-06-28 | 2014-09-10 | 浙江吉利控股集团有限公司 | Push rod assembly of vacuum booster |
| CN106564526A (en) * | 2015-10-12 | 2017-04-19 | 上海汽车集团股份有限公司 | Vehicle and steering column assembly thereof |
| CN106564526B (en) * | 2015-10-12 | 2018-10-16 | 上海汽车集团股份有限公司 | Vehicle and its column assy |
| CN106364546A (en) * | 2016-10-21 | 2017-02-01 | 刘玲燕 | Connection shaft staggering device for steering wheel of car |
| CN106627727A (en) * | 2016-10-21 | 2017-05-10 | 刘玲燕 | Steering wheel connecting shaft dislocation device for automobile |
| CN106627727B (en) * | 2016-10-21 | 2018-10-16 | 上海伟奕传动轴配件有限公司 | A kind of handwheel for vehicle connecting shaft dislocation device |
| CN106364546B (en) * | 2016-10-21 | 2019-01-29 | 广州广汽比亚迪新能源客车有限公司 | A kind of connecting shaft dislocation device for vehicle steering wheel |
| CN112413864A (en) * | 2020-11-25 | 2021-02-26 | 重庆瑞阳吉星科技有限公司 | Double-temperature-zone air conditioner controller |
| CN112644580A (en) * | 2021-01-21 | 2021-04-13 | 东风汽车集团股份有限公司 | Wire-controlled steering column and wire-controlled steering control method |
| CN112644580B (en) * | 2021-01-21 | 2022-03-01 | 东风汽车集团股份有限公司 | Wire-controlled steering column and wire-controlled steering control method |
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Open date: 20080206 |