Telescope feature used for energy absorption

• US 7,484,430 B2
• Filed: 07/27/2004
• Issued: 02/03/2009
• Est. Priority Date: 07/27/2004
• Status: Active Grant

• Current Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust), Steering Solutions IP Holding Corporation (Nexteer Automotive Group Ltd.)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Schulz, John F.
• Primary Examiner(s): Joyce; William C
• Application Number:
  US10/899,811
• Publication Number:
  US 20060021460A1
• Time in Patent Office: 1,652 Days
• Field of Search: 744/93, 280/777
• US Class Current: 74/493
• CPC Class Codes: B62D 1/184 Mechanisms for locking columns at selected positions
• CPC Class Codes: B62D 1/195 Yieldable supports for the steering column

Abstract

The invention includes a steering column assembly positionable in a vehicle. The invention also includes a connecting device releaseably attachable to the vehicle. The connecting device is moveable between a locked configuration and an unlocked configuration to selectively lock the steering column assembly with respect to the vehicle. The invention also includes a first energy absorber disposed between the connecting device and the steering column assembly. The first energy absorber is selectively engageable to dissipate energy. For example, the first energy absorber is engaged to dissipate energy in response to relative movement between the connecting device and the steering column assembly when the connecting device is in the locked configuration. The first energy absorber is disengaged with respect to dissipating energy in response to relative movement between the connecting device and the steering column assembly when the connecting device is in the unlocked configuration.

Claims

1. An apparatus comprising:

a steering column assembly having a pivot end and positionable in a vehicle, the steering column assembly having first and second steering column members engaged with respect to one another for telescoping movement;

a connecting device having a lever and being releaseably attachable to the vehicle and moveable between locked and unlocked configurations to selectively lock said steering column assembly with respect to the vehicle and the first steering column member with respect to the second steering column member;

a bracket extending from the first steering column member and defining a first slot having a plurality of teeth;

a first locking member releasably attachable to the vehicle, the first locking member defining a second slot having a plurality of teeth, the connecting device further having a second locking member coupled to the lever and extending through the first and second slots, the second locking member having a first plurality of teeth positioned to engage the plurality of teeth on the first slot of the bracket when the connecting device is in the locked position, the second locking member having a second plurality of teeth positioned to engage the plurality of teeth on the second slot of the first locking member when the connecting device is in the locked position; and

a first energy absorber disposed between said connecting device and said steering column assembly and engaged to dissipate energy in response to relative movement between said connecting device and said steering column assembly when said connecting device is in said locked configuration.

2. An apparatus comprising:

a steering column assembly positionable in a vehicle;

a connecting device releaseably attachable to the vehicle and moveable between locked and unlocked configurations to selectively lock said steering column assembly with respect to the vehicle;

a first energy absorber disposed between said connecting device and said steering column assembly and engaged to dissipate energy in response to relative movement between said connecting device and said steering column assembly when said connecting device is in said locked configuration and disengaged to dissipate energy in response to relative movement between said connecting device and said steering column when said connecting device is in said unlocked configuration; and

a second energy absorber associated with said connecting device to dissipate energy in response to movement of said connecting device with respect to the vehicle.

3. The apparatus of claim 2 wherein the first energy absorber is further defined as being disengaged to dissipate energy in response to relative movement between said connecting device and said steering column when said connecting device is in said unlocked configuration.

4. The apparatus of claim 2 wherein said steering column assembly includes first and second steering column members engaged with one another for telescoping movement.

5. The apparatus of claim 4 wherein said first energy absorber includes a first anvil fixedly associated with one of said connecting device and said first steering column member and a first strap drawable over said first anvil and fixedly associated with the other of said connecting device and said first steering column member.

6. The apparatus of claim 4 wherein said first steering column member is further defined as having a steering wheel supporting end and said second steering column member is further defined as having a pivoting end (28, 128) spaced from said steering wheel supporting end.

7. The apparatus of claim 4 wherein said first steering column member is pivotable relative to said connecting device.

8. The apparatus of claim 7 wherein said connecting device prevents both said telescoping movement and pivoting movement of said first steering column member.

9. The apparatus of claim 4 wherein said connecting device is immovably associated with said first steering column member in response to a separating force up to a first predetermined level of force when in said locked configuration and is slidable relative to said first steering column member in response to separating force greater than the first predetermined level of force when said in said locked configuration.

10. The apparatus of claim 2 wherein said connecting device further comprises:

a first locking member slidably associated with said steering column assembly; and

a second locking member moveable between a locked position contacting said first locking member and an unlocked position spaced from said first locking member.

11. The apparatus of claim 10 wherein said first locking member is pressed between first and second surfaces defined by said first steering column member.

12. The apparatus of claim 10 wherein said first locking member is immovably associated with said steering column assembly in response to a separating force up to a first predetermined level of force when said second locking member is said locked position and is slidable with respect to said steering column assembly in response to a separating force greater than the first predetermined level of force when second locking member is said locked position.

13. The apparatus of claim 10 wherein said first locking member includes a first locking portion and said second locking member includes a second locking portion selectively engageable with said first locking portion to prevent and said telescoping movement.

14. The apparatus of claim 10 wherein said connecting device further comprises:

a third locking member releaseably attachable to a vehicle and slidably engaged with said first locking member.

15. The apparatus of claim 14 wherein said first and third locking members are immovably associated with one another in response to said second locking member being moved to said locked position.

16. The apparatus of claim 14 wherein said steering column assembly includes a bracket disposed between said first and third locking members.

17. The apparatus of claim 16 wherein said bracket includes first and second surfaces and said first locking member is further defined as being pressed between first and second surfaces.

18. The apparatus of claim 14 wherein said first locking member includes a first locking portion and said second locking member includes a second locking portion and said third locking member includes a third locking portion, wherein said second locking portion being moveable between an unlocked position spaced from said first and third locking portions and a locked position contacting said second and third locking portions.

19. The apparatus of claim 18 wherein cooperation between said first locking portion and said second locking portion prevents said telescoping movement and cooperation between said third locking portion and said second locking portion prevents tilting movement.

20. The apparatus of claim 19 wherein said bracket defines a first slot and said third locking member defines a second slot and said second locking member extends through said first and second slots.

21. The apparatus of claim 20 wherein said second locking portion defines a first plurality of teeth and said third locking member defines a second plurality of teeth extending along said second slot, wherein said first and second pluralities of teeth engage one another when said second locking member is in said locked position and wherein said first and second pluralities of teeth are spaced from one another when said second locking member is in said unlocked position.

22. The apparatus of claim 21 wherein said second locking member moves at least partially perpendicular with respect to said second slot during movement between said locked and unlocked positions.

23. The apparatus of claim 22 wherein said second locking member defines a third plurality of teeth and said first locking member defines a fourth plurality of teeth disposed adjacent to said first slot, wherein said third and fourth pluralities of teeth engage one another when said second locking member is in said locked position and are spaced from one another when said second locking member is in said unlocked position.

24. The apparatus of claim 23 wherein said second locking member moves at least partially perpendicular with respect to said fourth plurality of teeth during movement between said locked and unlocked positions.

25. The apparatus of claim 10 including a biasing device urging said second locking member to said locked position.

26. The apparatus of claim 2 further comprising:

at least one capsule releaseably associated with said connecting device to releaseably attach said first connecting device to a vehicle.

27. The apparatus of claim 2 further comprising:

a third energy absorber disposed in parallel to said second energy absorber to dissipate energy in response to movement of said connecting device with respect to the vehicle.

28. The apparatus of claim 27 wherein said first energy absorber includes first anvil fixedly associated with one of said steering column assembly and said connecting device and a first strap drawable over said first anvil and fixedly associated with the other of said steering column assembly and said connecting device and wherein said second energy absorber includes a second anvil fixedly associated with one of said connecting device and said third energy absorber and a second strap drawable over said second anvil and fixedly associated with the other of said connecting device and said third energy absorber.

29. The apparatus of claim 28 wherein said third energy absorber is further defined as being immovably associated with said connecting device in response to a separating force up to a second predetermined level of force and as being separable from said connecting device in response to a separating force greater than the second predetermined level of force.

30. The apparatus of claim 29 wherein said connecting device is immovably associated with said steering column assembly in response to a separating force up to a first predetermined level of force and as being slidably associated with said steering column assembly in response to a separating force greater than the first predetermined level of force, wherein said first predetermined level of force is greater than said second predetermined level of force.