GB2269140A - Energy absorbing collapsible steering column. - Google Patents
Energy absorbing collapsible steering column. Download PDFInfo
- Publication number
- GB2269140A GB2269140A GB9219760A GB9219760A GB2269140A GB 2269140 A GB2269140 A GB 2269140A GB 9219760 A GB9219760 A GB 9219760A GB 9219760 A GB9219760 A GB 9219760A GB 2269140 A GB2269140 A GB 2269140A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pin
- shaft
- mechanism according
- tube
- energy absorbing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/125—Units with a telescopic-like action as one member moves into, or out of a second member
Abstract
In a steering column structure mountable to a break away mounting an inner steering shaft (15) is drivably coupled by a splined arrangement (8) to an outer shaft (16), and has an energy absorption member in the form of a tube (17) which surrounds a pin (18) which is mounted diametrically through the inner shaft. A crash induced force on the column structure causes the outer shaft to be forced relatively towards the tube (17), thereby inducing an interaction between the pin and tube, the latter being deformed thereby to achieve the requisite energy absorption. In an alternative embodiment, the splined outer shaft (16) itself acts as the absorption energy member, the pin (18) deforming the splined arrangement (8). <IMAGE>
Description
2269140 VEHICLE CRASH ENERGY ABSORBING MECHANISM The present invention
relates to an automotive vehicle crash energy absorbing mechanism.
During a crash a suitable mechanism is required to meet statutory regulations in respect of the force imposed on a driver of a vehicle when in contact with the vehicle's steering wheel. There are various mechanisms for this purpose.
A vehicle crash energy absorbing mechanism according to one aspect of the present invention comprises a steering column structure mountable to a breakaway mounting. the structure including an inner steering shaft and an outer shaft drivably coupled to the inner shaft and axially slidable over and with respect to the inner shaft, the inner shaft having an energy absorption member mounted thereon by means of a pin, the mechanism acting so that a crash induced force on the column structure causes the outer shaft to be forced relatively towards the energy absorption member inducing an interaction between the pin and member.
Preferably the pin is mounted diametrically through the inner shaft. The absorption member can comprise a tube.
The pin is preferably of such a length as to f orm an interference fit within at least an initial part of the tube. This initial part may have diametrically opposite slots extending in the axial direction some 10 mm or so from the outer end of the tube.
According to another aspect of the present invention, there is provided a vehicle crash energy absorbing mechanism comprising a steering column structure mountable to a breakaway mounting, the structure including an inner steering shaft and an outer shaft drivably coupled to the inner shaft and axially slidable over and with respect to the inner shaft, the inner shaft having a pin incorporated therein, the mechanism acting so that a crash induced f orce on the column structure causes the outer shaft to be f orced relatively towards the pin thereby inducing an interaction between the pin and outer shaft, the latter acting as an energy absorption member.
An advantage of this mechanism is the low cost and the ease with which it can be adapted to meet particular vehicle requirements.
The pin diameter and/or length, tube thickness and interference can be varied. A further advantage is that at the point of manufacture the mechanism as assembled can be completely checked by measuring the installed force of inserting the pin into the mouth of the tube.
Further embodiments and variation may be constructed having more than one cross pin.
For a better understanding of the invention and to show how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawings in which:
Figure 1 is a general elevation of a steering column structure having one form of an energy absorbing mechanism.
Figure 2 is an enlarged axial cross-section of the mechanism of Figure 1; Figure 2A is a diametral cross-section taken at A-A on Figure 2 showing pin and tube construction; Figure 3 is a view similar to Figure 2 of another form of energy absorbing mechanism; Figure 3A is a diametral cross-section taken at A-A on Figure 3 showing pin and sleeve construction; Figure 3B is a diametral cross-section takenat imaginary line B-B in Figure 3 illustrating deformation by pin after crash movement of steering column; and Figure 4 is a diagram of the f orce on the steering column shaf t against movement of the tube relative the outer shaft shown in Figure 1.
In Figure 1 there is shown a steering column structure 10 with steering wheel 13 and mounting bracket 2 connected by breakaway capsules 11 to cross member 14 having an inner steering shaft 15 to which is mounted by means of a spline 8 to an outer steering column shaft 16, so that the outer shaft can move axially over and with respect to the inner shaft.
Mounted around the inner shaft 15 is a tubular energy absorption member 17 having an inner abutment f lange shaped portion 2 and an outer mouth 3 within which and extending inwards from the outer extremity of the mouth are two axially aligned grooves 4 which are diametrically opposed and which receive, by means of an interference fit, the ends 5 of a cross pin 18.
When a crash occurs, impact by the driver on steering wheel 13 f orces bracket 12 to breakaway from cross member 14.
The outer end 7 of the outer tube 16 then moves relatively a distance L1 to impact on abutment portion 2 of member 17.
The movement of the cross pin 18 along length L2 within member 17 under controlled interference achieves the requisite energy absorption.
With the modification illustrated in Figures 3, 3A and 3B, the tubular energy absorption member 17 is replaced by the splined outer steering column shaft 16 itself. In this case, the pin 18 is held in place in the inner shaft 15 by a sleeve 19, which is located as an interference fit about the inner shaft 15.
The end of the spline 8 adjacent the end 7 of the outer tuber 16 is given a chamfered entry 8A. When a crash occurs, the outer end 7 of the outer tube 16 is moved the distance L,, which is free travel to impact on the facing end of the sleeve 19, which is pushed clear of the cross pin 18. The chamfered entry 8A of the spline 8 receives the opposite ends of the cross pin 18, which then proceed to def orm the spline 8 in the outer tube 16, the energy being absorbed over length L2 (see Figures 3 and 3B).
The absorption energy is shown graphically in Fig. 3.
Claims (9)
1. A vehicle crash energy absorbing mechanism comprising a steering column structure mountable to a breakaway mounting, the structure including an inner steering shaft and an outer shaft drivably coupled to the inner shaft and axially slidable over and with respect to the inner shaft, the inner shaft having an energy absorption member mounted thereon by means of a pin, the mechanism acting so that a crash induced f orce on the column structure causes the outer shaft to be forced relatively towards the energy absorption member inducing an interaction between the pin and member.
2. A mechanism according to claim 1, wherein said energy absorption member is a tube.
3. A mechanism according to claim 2, wherein the pin is of such a length as to form an interference fit within at least an initial part of the tube.
4. A mechanism according to claim 3, wherein said initial part of the tube has diametrically opposite slots extending ---inthe axial direction from the outer end of the tube.
5. A vehicle crash energy absorbing mechanism comprising a steering column structure mountable to a breakaway mounting, the structure including an inner steering shaft and an outer shaft drivably coupled to the inner shaft and axially slidable over and with respect to the inner shaft, the inner shaft having a pin incorporated therein, the mechanism acting so that a crash induced force on the column structure causes the outer shaft to be forced relatively towards the pin thereby inducing an interaction between the pin and outer shaft, the latter acting as an energy absorption member.
6. A mechanism according to any one of the preceding claims, wherein said inner steering shaft and said outer shaft are drivably coupled to one another by means of a splined arrangement.
7. A mechanism according to any one of the preceding claims, wherein a length of free travel is provided for said shaft prior to the pin being encountered.
8. A vehicle crash energy absorbing mechanism, 10 substantially as hereinbefore described, with reference to either one of the embodiments shown in the accompanying drawings.
9. A vehicle incorporating an energy absorbing mechanism 15 according to any one of the preceding claims.
7. A mechanism according to claim 6 as appendant to claim 5, wherein a crash induced force on the column structure causes the pin to deform said splined arrangement.
8. A mechanism according to claim 5 or 7, wherein said pin is held in place prior to any crash induced f orce by means of a sleeve, which is urged clear of the pin by said outer shaft when it is forced towards the pin.
9. A mechanism according to any one of the preceding claims, wherein the pin is mounted diametrically through said inner shaft.
10. A mechanism according to any one of the preceding claims, wherein a length of free travel is provided f or said shaft prior to the pin being encountered.
11. A vehicle crash energy absorbing mechanism, substantially as hereinbefore described, with reference to either one of the embodiments shown in the accompanying drawings.
Amendments to the claims have been filed as follows CLAIMS:
I. A vehicle crash energy absorbing mechanism comprising a steering column structure mountable to a breakaway mounting, the structure including an inner steering shaft and an outer shaft drivably coupled to the inner shaft and axially slidable over and with respect to the inner shaft, and an energy absorbing means f or absorbing energy from crash induced forces on the steering column structure, the energy absorbing means being mounted on the inner steering shaft, the energy absorbing means comprising a tube mounted about the inner steering shaft and a pin extending outwardly of the inner steering shaft, the pin having a length as to form an interference fit within at least an initial part of the tube.
2. A mechanism according to claim 1, wherein said initial part of the tube has diametrically opposite grooves extending in the axial direction from the outer end of the tube.
3. A mechanism according to claim 1 or 2, wherein said inner steering shaft and said outer shaft are drivably coupled to one another by means of a splined arrangement.
4. A mechanism according to claim 3. wherein said tube is constituted by said outer shaft and a crash induced force on the column structure causes the pin to deform said splined arrangement.
5. A mechanism according to any one of the preceding claims, wherein said pin is held in place prior to any crash induced force by means of a sleeveffl which is urged clear of the pin by said outer shaft when it is forced towards the pin.
6. A mechanism according to any one of the preceding claims, wherein the pin is mounted diametrically through said inner shaft.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/073,214 US5342091A (en) | 1992-07-28 | 1993-06-07 | Energy absorbing steering assembly |
CA002100104A CA2100104A1 (en) | 1992-07-28 | 1993-07-08 | Vehicle crash energy absorbing mechanism |
JP5183979A JPH072121A (en) | 1992-07-28 | 1993-07-26 | Vehicle collision energy absorber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929215995A GB9215995D0 (en) | 1992-07-28 | 1992-07-28 | Vehicel crash energy absorbing mechanism |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9219760D0 GB9219760D0 (en) | 1992-10-28 |
GB2269140A true GB2269140A (en) | 1994-02-02 |
GB2269140B GB2269140B (en) | 1995-07-19 |
Family
ID=10719412
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB929215995A Pending GB9215995D0 (en) | 1992-07-28 | 1992-07-28 | Vehicel crash energy absorbing mechanism |
GB9219760A Expired - Fee Related GB2269140B (en) | 1992-07-28 | 1992-09-18 | Vehicle crash energy absorbing mechanism |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB929215995A Pending GB9215995D0 (en) | 1992-07-28 | 1992-07-28 | Vehicel crash energy absorbing mechanism |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE4325040A1 (en) |
FR (1) | FR2694257B1 (en) |
GB (2) | GB9215995D0 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2273969B (en) * | 1992-12-30 | 1995-08-23 | Melchor Daumal Castellon | Telescopic shaft for a steering column |
EP0683084A2 (en) * | 1994-05-20 | 1995-11-22 | Nsk Ltd | Energy absorbing intermediate shaft |
GB2292989A (en) * | 1994-09-09 | 1996-03-13 | Nsk Ltd | Energy-absorbing collapsible steering shaft |
FR2734876A1 (en) * | 1995-05-31 | 1996-12-06 | Sicma Aero Seat | Energy absorbing connector for aircraft seat backs |
GB2312266A (en) * | 1996-04-18 | 1997-10-22 | Daumal Castellon Melchor | Telescopic shaft for a steering column |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006052356A1 (en) * | 2006-11-07 | 2008-05-08 | GM Global Technology Operations, Inc., Detroit | Intermediate shaft for steering element strand in vehicle, particularly passenger cars, has telescopic element and crash element, which is connected with telescopic element |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1075329A (en) * | 1965-03-19 | 1967-07-12 | Gen Motors Corp | Telescopic steering column assemblies |
US3851542A (en) * | 1972-05-02 | 1974-12-03 | Cam Gears Ltd | Collapsible steering columns |
US4098141A (en) * | 1976-11-15 | 1978-07-04 | Nippon Seiko Kabushiki Kaisha | Energy absorbing steering assembly |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3434369A (en) * | 1965-08-05 | 1969-03-25 | Bendix Corp | No-lash axially movable steering column |
-
1992
- 1992-07-28 GB GB929215995A patent/GB9215995D0/en active Pending
- 1992-09-18 GB GB9219760A patent/GB2269140B/en not_active Expired - Fee Related
-
1993
- 1993-07-26 DE DE19934325040 patent/DE4325040A1/en not_active Withdrawn
- 1993-07-28 FR FR9309284A patent/FR2694257B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1075329A (en) * | 1965-03-19 | 1967-07-12 | Gen Motors Corp | Telescopic steering column assemblies |
US3851542A (en) * | 1972-05-02 | 1974-12-03 | Cam Gears Ltd | Collapsible steering columns |
US4098141A (en) * | 1976-11-15 | 1978-07-04 | Nippon Seiko Kabushiki Kaisha | Energy absorbing steering assembly |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2273969B (en) * | 1992-12-30 | 1995-08-23 | Melchor Daumal Castellon | Telescopic shaft for a steering column |
EP0683084A2 (en) * | 1994-05-20 | 1995-11-22 | Nsk Ltd | Energy absorbing intermediate shaft |
EP0683084A3 (en) * | 1994-05-20 | 1997-01-02 | Nsk Ltd | Energy absorbing intermediate shaft. |
GB2292989A (en) * | 1994-09-09 | 1996-03-13 | Nsk Ltd | Energy-absorbing collapsible steering shaft |
US5575501A (en) * | 1994-09-09 | 1996-11-19 | Nsk Ltd. | Shaft for collapsible steering apparatus |
GB2292989B (en) * | 1994-09-09 | 1998-04-15 | Nsk Ltd | Shaft for collapsible steering apparatus |
FR2734876A1 (en) * | 1995-05-31 | 1996-12-06 | Sicma Aero Seat | Energy absorbing connector for aircraft seat backs |
GB2312266A (en) * | 1996-04-18 | 1997-10-22 | Daumal Castellon Melchor | Telescopic shaft for a steering column |
FR2747746A1 (en) * | 1996-04-18 | 1997-10-24 | Daumal Castellon Melchor | IMPROVEMENTS ON TELESCOPIC TREES |
US5813794A (en) * | 1996-04-18 | 1998-09-29 | Castellon; Melchor Daumal | Telescopic shafts |
ES2129322A1 (en) * | 1996-04-18 | 1999-06-01 | Castellon Melchor Daumal | Telescopic shafts |
GB2312266B (en) * | 1996-04-18 | 1999-08-25 | Daumal Castellon Melchor | Improvements to telescopic shafts |
Also Published As
Publication number | Publication date |
---|---|
GB9215995D0 (en) | 1992-09-09 |
FR2694257A1 (en) | 1994-02-04 |
DE4325040A1 (en) | 1994-02-24 |
FR2694257B1 (en) | 1995-06-30 |
GB9219760D0 (en) | 1992-10-28 |
GB2269140B (en) | 1995-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5342091A (en) | Energy absorbing steering assembly | |
KR0139704B1 (en) | Impact absorbing type steering column apparatus with a motorized power steering device | |
US4998999A (en) | Steering column assembly with energy absorption mechanism | |
EP0458456B1 (en) | Steering column assembly mounting mechanism | |
US5368330A (en) | Motor vehicle steering column | |
GB2269140A (en) | Energy absorbing collapsible steering column. | |
JP3536296B2 (en) | Vehicle steering control device | |
US20050075174A1 (en) | Clearance damping device for a telescoping shaft assembly | |
GB2059006A (en) | Energy-absorbing steering columns | |
KR200188278Y1 (en) | Shock energy observing structure of steering column | |
KR100816397B1 (en) | Shock absorbing device of steering column for vehicle | |
KR100208742B1 (en) | Telescopic steering shaft | |
KR101046186B1 (en) | Mounting Bracket Shock Absorption Structure of Steering System | |
KR200158237Y1 (en) | Shock energy absorbing apparatus of steering column tube | |
KR100330901B1 (en) | A steering column structure of impact absorption | |
KR0136326Y1 (en) | Shock energy absorbing apparatus of a steering column | |
KR0159631B1 (en) | Steering shaft provided with an emergy absorbing unit for an automobile | |
KR101033157B1 (en) | Shock-absorption structure of steering system | |
KR20020047955A (en) | Impact absorbing structure of steer column for vehicle | |
KR960003462Y1 (en) | Impact absorbing apparatus for a steering column | |
KR100264660B1 (en) | Collapsible Steering Column | |
KR200166026Y1 (en) | Shock absorbing device for vehicle's steering column | |
KR100189429B1 (en) | Steering shaft for shock energy absorbing | |
KR19990019893A (en) | Shock Absorption Structure of Vehicle Steering Column | |
KR200192427Y1 (en) | Collapsible Steering Shaft |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20000918 |