Vehicle seat interlock

• US 6,352,312 B1
• Filed: 03/24/2000
• Issued: 03/05/2002
• Est. Priority Date: 03/24/2000
• Status: Expired due to Fees

• Current Assignee: Excellence Manufacturing, Inc. (Production Stamping Corp.)
• Original Assignee: Excellence Manufacturing, Inc. (Production Stamping Corp.)
• Inventors: Rees, Richard W. A.
• Primary Examiner(s): Chen, Jose V.
• Assistant Examiner(s): WHITE, RODNEY BARNETT
• Application Number:
  US09/536,108
• Time in Patent Office: 711 Days
• Field of Search: 297/216.1, 297/216.13, 297/216.14, 297/216.15, 297/216.16, 297/216.18, 297/470, 297/344.1, 297/473, 297/463.1, 248/429, 248/503.1
• US Class Current: 297/470
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60N 2/071 T-shaped
• CPC Class Codes: B60N 2/0715 C or U-shaped
• CPC Class Codes: B60N 2/072 Complex cross-section, e.g. obtained by extrusion
• CPC Class Codes: B60N 2/073 Reinforcement members preventing slide dislocation
• CPC Class Codes: B60N 2/0825 outside the rail
• CPC Class Codes: B60N 2/085 about a transversal axis
• CPC Class Codes: B60N 2/4221 due to impact coming from the front
• CPC Class Codes: B60N 2/42709 involving residual deformation or fracture of the structure
• CPC Class Codes: B60N 2/42781 mechanical triggering
• CPC Class Codes: B60N 2/43 Safety locks for back-rests B60N2/433
• CPC Class Codes: B60R 22/26 secured to the seat

Abstract

A vehicle seat interlock mechanism includes a U-shaped channel member extending along a lower track of a seat and an interlock bracket mounted to a deformable mounting member at an upper track of the seat. The interlock bracket includes a seat belt anchor and a U-shaped channel at a lower end of the bracket. The interlock bracket is movable upwardly and forwardly in response to a seat belt force sufficient to deform the mounting member of the interlock bracket, whereby the two interlock channels engage to limit movement of the seat relative to the floor of the vehicle. The interlock bracket may include a portion extending forwardly over a gear box of a power drive system for the seat, such that the bracket is movable to compress the gear box to further retain the gear mechanism to a rack along the track assembly of the seat.

Claims

1. A seat interlock mechanism for retaining a seat of a vehicle to a seat base during a sudden deceleration of the vehicle, the seat being adjustable forwardly and rearwardly along a track assembly positioned along opposite sides of the seat, each track assembly having an upper and lower track section, said interlock mechanism being positionable along at least one side of the seat and comprising:

a mounting member extending laterally outwardly from at least one side of the upper section of the track assembly of the seat, said mounting member comprising a deformable, elongated member extending laterally across the seat and being mountable at each end to the upper track section of a respective one of the track assemblies;

a first channel member positionable at the seat base and at least partially along the lower track section of the respective one of the track assemblies;

an interlock bracket positioned at said mounting member, said interlock bracket including a second channel member extending downwardly therefrom, said second channel member being positioned along said first channel member and at least initially spaced therefrom; and

a seat belt mount positioned at one of an end of said mounting member and said interlock bracket, such that said interlock bracket is movable to engage said second channel member with said first channel member in response to deformation of said mounting member by a seat belt force at said seat belt mount which is sufficient to deform said mounting member.

2. The seat interlock mechanism of claim 1, wherein said mounting member is received within a slotted opening in said interlock bracket.

3. The seat interlock mechanism of claim 2, wherein said seat belt mount is positioned at said interlock bracket, said slotted opening providing a gap between said interlock bracket and said mounting member to delay deformation of said mounting member until after an initial deformation of said interlock bracket in response to an initial seat belt force at said seat belt mount.

4. The seat interlock mechanism of claim 1, wherein the seat is vertically adjustable via a powered seat mechanism, said mounting member comprising a torsion tube which is rotatably mounted toward each end to the upper track section of the respective track assembly.

8. The seat interlock mechanism of claim 1, wherein the seat is forwardly and rearwardly adjustable via a powered seat adjustment mechanism which comprises a drive member along the track assembly.

9. The seat interlock mechanism of claim 8, wherein said interlock bracket comprises a locking extension which functions to compress at least a portion of the drive member to retain the drive member in engagement with the track assembly in response to deformation of said mounting member.

10. The seat interlock mechanism of claim 1, wherein said first and second channels interconnect to substantially limit relative forward movement therebetween when said first and second channels are engaged.

12. The seat interlock mechanism of claim 1, wherein said interlock mechanism is positionable along both sides of the seat.

36. The seat interlock mechanism of claim 1, wherein said first channel member is configured to be integrally formed with the seat base of the seat of the vehicle.

5. A seat interlock mechanism for retaining a seat of a vehicle to a seat base during a sudden deceleration of the vehicle, the seat being adjustable forwardly and rearwardly along a track assembly, the track assembly having an upper and lower track section, said interlock mechanism being positionable along at least one side of the seat and comprising:

a mounting member extending laterally outwardly from at least one side of the upper section of the track assembly of the seat;

a first channel member positionable at the seat base and at least partially along the lower section of the track assembly;

an interlock bracket positionable at said mounting member, said interlock bracket including a second channel member extending downwardly therefrom, said second channel member being positioned along said first channel member and at least initially spaced therefrom; and

a seat belt mount positioned at one of said mounting member and said interlock bracket, such that said interlock bracket is movable to engage said second channel member with said first channel member in response to a seat belt force at said seat belt mount which is sufficient to deform at least one of said mounting member and said interlock bracket, wherein said interlock bracket comprises a pair of opposite panels interconnected at least partially along an upper edge thereof, a first panel being secured at least partially along the upper section of the track assembly, while a second panel is positioned laterally outwardly therefrom, said first and second panels receiving said mounting member therethrough.

6. The seat interlock mechanism of claim 5, wherein said second panel includes a slotted opening for receiving said mounting member, said slotted opening being sized in accordance with a sufficient deformation of said interlock bracket to engage said second channel with said first channel.

7. The seat interlock mechanism of claim 5, wherein said mounting member is a torsion tube extending laterally across the seat and being rotatably mounted at each end to the upper section of the track assembly, said first and second panels rotatably receiving said torsion tube therethrough.

11. A seat interlock mechanism for retaining a seat of a vehicle to a seat base during a sudden deceleration of the vehicle, the seat being adjustable forwardly and rearwardly along a track assembly, the track assembly having an upper and lower track section, said interlock mechanism being positionable along at least one side of the seat and comprising:

a mounting member extending laterally outwardly from at least one side of the upper section of the track assembly of the seat;

a first channel member positionable at the seat base and at least partially along the lower section of the track assembly;

an interlock bracket positionable at said mounting member, said interlock bracket including a second channel member extending downwardly therefrom, said second channel member being positioned along said first channel member and at least initially spaced therefrom, wherein said second channel comprises a plurality of raised portions therealong which are engagable with corresponding notches along said first channel, said first and second channels interconnecting to substantially limit relative forward movement therebetween when said first and second channels are engaged; and

a seat belt mount positioned at one of said mounting member and said interlock bracket, such that said interlock bracket is movable to engage said second channel member with said first channel member in response to a seat belt force at said seat belt mount which is sufficient to deform at least one of said mounting member and said interlock bracket.

13. A seat for a vehicle, the vehicle having a floor, said seat comprising:

a seat base securable to the floor of the vehicle;

a track assembly comprising an upper track and a lower track and being positioned along opposite sides of said seat, said lower track being secured along said seat base;

a seat support mounted at said upper track;

a mounting member extending laterally across said seat and outwardly from said upper track, said mounting member comprising a deformable, elongated member mounted at each end to said upper track of said track assembly along a respective side of said seat;

a seat interlock mechanism comprising a first channel positioned along said lower track and an interlock bracket mounted at said upper track and said mounting member, said interlock bracket including a second channel which is aligned with and at least initially spaced from said first channel; and

a seat belt mount positioned at one of said interlock bracket and said mounting member, said interlock bracket being operable to engage said second channel with said first channel in response to deformation of said mounting member by a seat belt force at said seat belt mount which is sufficient to deform said mounting member.

14. The seat interlock mechanism of claim 13, wherein said first channel is integrally formed with said seat base.

15. The seat of claim 13, wherein said first and second channels are operable to non-slidably engage one another in response to the seat belt force.

20. The seat of claim 13, wherein said seat is a powered adjustable seat, said upper track being adjusted forwardly and rearwardly relative to said lower track via a powered seat mechanism.

22. The seat of claim 13, wherein said interlock mechanism is positioned at both sides of said seat.

16. A seat for a vehicle, the vehicle having a floor, said seat comprising:

a seat base securable to the floor of the vehicle;

a track assembly comprising an upper track and a lower track, said lower track being secured along said seat base;

a seat support mounted at said upper track;

a mounting member extending laterally outwardly from said upper track;

a seat interlock mechanism comprising a first channel positioned along said lower track and an interlock bracket mounted at said upper track and said mounting member, said interlock bracket including a second channel which is aligned with and at least initially spaced from said first channel; and

a seat belt mount positioned at one of said interlock bracket and said mounting member, said interlock bracket being operable to engage said second channel with said first channel in response to a seat belt force at said seat belt mount which is sufficient to deform at least one of said mounting member and said interlock bracket, wherein said interlock bracket comprises a first panel and a second panel connected at least partially along an upper edge thereof, said first panel being secured to said upper track and said second panel being laterally outwardly positioned from said first panel, said first and second panel receiving said mounting member therethrough.

17. The seat of claim 16, wherein said mounting member is an elongated cross member extending laterally across said seat, at least one end of said cross member extending laterally outwardly from said upper track.

18. The seat of claim 17, wherein said seat comprises a powered seat mechanism for adjusting a height of said seat support via rotation of said cross member, said interlock bracket rotatably receiving said at least one end of said cross member.

19. The seat of claim 16, wherein said second panel receives said mounting member through a slotted opening to provide an initial deformation of said interlock bracket which is sufficient to at least partially engage said first and second channels in response to an initial seat belt force.

21. A seat for a vehicle, the vehicle having a floor, said seat comprising:

a seat base securable to the floor of the vehicle;

a track assembly comprising an upper track and a lower track, said lower track being secured along said seat base, said seat comprising a powered adjustable seat, said upper track being adjusted forwardly and rearwardly relative to said lower track via a powered seat mechanism;

a seat support mounted at said upper track;

a mounting member extending laterally outwardly from said upper track;

a seat interlock mechanism comprising a first channel positioned along said lower track and an interlock bracket mounted at said upper track and said mounting member, said interlock bracket including a second channel which is aligned with and at least initially spaced from said first channel; and

a seat belt mount positioned at one of said interlock bracket and said mounting member, said interlock bracket being operable to engage said second channel with said first channel in response to a seat belt force at said seat belt mount which is sufficient to deform at least one of said mounting member and said interlock bracket, wherein said interlock bracket includes a locking arm which functions to compress a portion of said powered seat mechanism in response to deformation of said mounting member to substantially limit relative movement of said track assembly relative to said portion of said powered seat mechanism.

23. A powered seat for a vehicle having a floor, said powered seat comprising:

a seat base securable to the floor of the vehicle;

a track assembly comprising an upper track and a lower track, said lower track being secured along said seat base, said upper track being movable along said lower track;

an elongated torsion tube extending laterally across the seat, at least one end of said torsion tube extending laterally outwardly from said upper track;

a seat support mounted to said torsion tube;

a powered drive mechanism which is operable to move said upper track forwardly and rearwardly with respect to said lower track;

a seat interlock mechanism comprising a first channel positioned along said lower track and an interlock bracket mounted at said upper track and at least one end of said torsion tube, said interlock bracket comprising first and second plates connected along an upper edge thereof, said second plate being positioned laterally outwardly from said first plate and including a second channel extending downwardly therefrom, said second channel being aligned with and at least initially spaced from said first channel; and

a seat belt mount positioned at one of said interlock bracket and said end of said torsion tube, said interlock bracket being operable to engage said second channel with said first channel in response to a seat belt force at said seat belt mount which is sufficient to deform said torsion tube.

24. The seat interlock mechanism of claim 23, wherein said first channel is integrally formed with said seat base.

25. The powered seat of claim 23, wherein said powered drive mechanism is further operable to adjust a height of said seat support via rotation of said torsion tube, said interlock bracket rotatably receiving said torsion tube therethrough.

26. The powered seat of claim 23, wherein said first plate of said interlock bracket includes a locking extension extending therefrom for engagement with a portion of said powered drive mechanism to substantially retain said portion of said powered drive mechanism to said track assembly in response to said seat belt force at said seat belt mount.

27. A powered seat for a vehicle having a floor, said powered seat comprising:

a seat base securable to the floor of the vehicle;

a track assembly comprising an upper track and a lower track, said lower track being secured along said seat base, said upper track being movable along said lower track;

an elongated torsion tube extending laterally across the seat, at least one end of said torsion tube extending laterally outwardly from said upper track;

a seat support mounted to said torsion tube;

a powered drive mechanism which is operable to move said upper track forwardly and rearwardly with respect to said lower track;

a seat interlock mechanism comprising a first channel positioned along said lower track and an interlock bracket mounted at said upper track and at least one end of said torsion tube, said interlock bracket comprising first and second plates connected along an upper edge thereof, said second plate being positioned laterally outwardly from said first plate and including a second channel extending downwardly therefrom, said second channel being aligned with and at least initially spaced from said first channel; and

a seat belt mount positioned at one of said interlock bracket and said end of said torsion tube, said interlock bracket being operable to engage said second channel with said first channel in response to a seat belt force at said seat belt mount which is sufficient to deform at least one of said torsion tube and said interlock bracket, wherein said first and second channels of said interlock mechanism comprise corresponding teeth at least partially therealong, such that forward movement of said upper track relative to said lower track is substantially limited by engagement of said teeth of said first and second channels.

28. The seat interlock mechanism of claim 27, wherein said teeth of said first channel comprise a plurality of semi-shear indentations along said first channel, said teeth of said second channel comprising at least one raised portion at said second channel.

29. An interlock mechanism for substantially limiting forward movement of a seat of a vehicle in response to a seat belt force being exerted at the seat during a sudden deceleration of the vehicle, the vehicle seat being mounted at a track assembly, and having a drive mechanism which is operable to rotatably actuate at least one gear member at a rack extending along the track assembly for adjusting the seat forwardly and rearwardly along the track assembly, said interlock mechanism comprising:

an interlock bracket mounted at the track assembly, the seat belt being anchored at said interlock bracket, an engaging portion of said interlock bracket extending therefrom and at least initially being positioned adjacent to the gear member at the track assembly, said engaging portion being operable to engage and compress the gear member to retain engagement of the gear member to the rack to substantially limit forward movement of the seat in response to a seat belt force sufficient to move at least a portion of said interlock bracket.

30. The interlock mechanism of claim 29, wherein said interlock bracket is mounted at a deformable member extending laterally outwardly from the track assembly, said interlock bracket being movable in response to a seat belt force sufficient to deform said deformable member.

31. The interlock mechanism of claim 30 further including a first channel member extending along the track assembly, said interlock bracket further including a second channel member which is aligned with and initially spaced from said first channel member, said interlock bracket being movable to engage said second channel with said first channel to limit forward movement of the seat.

32. The seat interlock mechanism of claim 31, wherein said first channel member is configured to be integrally formed with a base of the seat of the vehicle.

33. The interlock mechanism of claim 31, wherein said first and second channel members include corresponding raised portions for engagement with the raised portions of the other channel member to further limit forward movement of the seat.

34. The seat interlock mechanism of claim 33, wherein said first channel comprises a plurality of semi-shear indentations therealong which are engagable with said raised portion of said second channel.

35. A seat interlock mechanism for retaining a seat of a vehicle to a seat base during a sudden deceleration of the vehicle, the seat being adjustable forwardly and rearwardly along a track assembly, the track assembly having an upper and lower track section, said interlock mechanism being positionable along at least one side of the seat and comprising:

a mounting member extending laterally outwardly from at least one side of the upper section of the track assembly of the seat;

a first channel member positionable at the seat base and at least partially along the lower section of the track assembly;

an interlock bracket positionable at said mounting member, said interlock bracket including a second channel member extending downwardly therefrom, said second channel member being positioned along said first channel member and at least initially spaced therefrom, wherein said first channel member comprises a plurality of semi-shear indentations therealong which are engagable with at least one raised portion at said second channel member, said first and second channels interconnecting to substantially limit relative forward movement therebetween when said first and second channels are engaged; and

a seat belt mount positioned at one of said mounting member and said interlock bracket, such that said interlock bracket is movable to engage said second channel member with said first channel member in response to a seat belt force at said seat belt mount which is sufficient to deform at least one of said mounting member and said interlock bracket.

37. A seat for a vehicle, the vehicle having a floor, said seat comprising:

a seat base securable to the floor of the vehicle;

a track assembly comprising an upper track and a lower track, said lower track being secured along said seat base;

a seat support mounted at said upper track;

a mounting member extending laterally outwardly from said upper track;

a seat interlock mechanism comprising a first channel positioned along said lower track and an interlock bracket mounted at said upper track and said mounting member, said interlock bracket including a second channel which is aligned with and at least initially spaced from said first channel, wherein said first channel comprises a plurality of semi-shear indentations therealong which are engagable with at least one raised portion at said second channel; and

a seat belt mount positioned at one of said interlock bracket and said mounting member, said interlock bracket being operable to engage said second channel with said first channel in response to a seat belt force at said seat belt mount which is sufficient to deform at least one of said mounting member and said interlock bracket, said first and second channels being operable to non-slidably engage one another in response to the seat belt force.