Vehicle Seat Assembly

• US 20120049603A1
• Filed: 08/27/2010
• Published: 03/01/2012
• Est. Priority Date: 08/27/2010
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Ellison, Terrie
• Granted Patent: US 8,408,655 B2
• Time in Patent Office: Days
• US Class Current: 297/452.16
• CPC Class Codes: B60N 2/015 Attaching seats directly to vehicle chassis
• CPC Class Codes: B60N 2/01508 using quick release attachments
• CPC Class Codes: B60N 2/42718 with anti-submarining systems
• CPC Class Codes: B60N 2/70 Upholstery springs ; Upholstery
• CPC Class Codes: B60N 2/797 for use as electrical control means, e.g. switches
• CPC Class Codes: Y10T 29/481 Method

Abstract

A vehicle seat assembly includes a seatback and a seat base extending forward from a lower end of the seatback. The seat base is formed of a first foam member extending laterally across the seat base to absorb loads and a second foam member formed over the first member to form a seating surface of the seat base. The first foam member is formed of complementary portions that mate together to form the first foam member.

Claims

1. A vehicle seat assembly, comprising:

a seat back;

a seat base extending forward from a lower end of said seat back, said seat base formed of a first foam member extending laterally across said seat base to absorb loads and a second foam member formed over said first member and extending rearwardly therefrom to form a seating surface of said seat base, said first foam member formed of complementary portions that mate together to form said first foam member.

2. The vehicle seat assembly of claim 1 wherein said complementary portions include a first portion and a second portion connected to one another by an integrally formed hinge.

3. The vehicle seat assembly of claim 2 wherein said complementary portions are formed of a relatively rigid material and said integrally formed hinge is a living hinge, said second foam member formed of a relatively less rigid material.

4. The vehicle seat assembly of claim 3 wherein said relatively rigid material is expanded polypropylene and said relatively less rigid material is a urethane foam.

5. The vehicle seat assembly of claim 1 wherein said first foam member is secured to at least one wire frame section that extends rearwardly from said first foam member toward a rear of said seat base for mounting said seat base to an associated vehicle body, said complementary portions mating together around said at least one wire frame section to secure said first foam member thereto.

6. The vehicle seat assembly of claim 5 further including:

a plate fixed to said at least one wire frame section along a length thereof that has said complementary portions mated therearound, said complementary portions having at least one integrally molded connector locking said complementary portions to said plate.

7. The vehicle seat assembly of claim 6 wherein said plate defines apertures and each of said complementary portions has at least one integrally molded connector received through a corresponding one of said apertures to lock said complementary portions to said plate.

8. The vehicle seat assembly of claim 5 wherein each of said at least one wire frame section includes a nonlinear section about which said complementary portions are received, each of said complementary portions having a mating surface that conforms to said nonlinear section and the other of said complementary portions.

9. The vehicle seat assembly of claim 8 wherein said nonlinear section is an inverted U-shaped section adjacent a forward end of said at least one wire frame section, a first lower one of said complementary portions having a complementary ridge received in said inverted U-shaped section and a second upper one of said complementary portions having a recess receiving an apex of said inverted U-shaped section and said ridge of said first lower one.

10. The vehicle seat assembly of claim 9 wherein said forward end of said at least one wire frame section is secured to an associated vehicle body under a front end of said seat base, and an extending portion of said at least one wire frame section extends from said inverted U-shaped section to a rear end of said seat base, and a rear end of said at least one wire frame section is secured to said associated vehicle body rearwardly of said seat base.

11. The vehicle seat assembly of claim 5 wherein said seat base has at least one hip point axis with a first lateral end and a second lateral end, said at least one wire frame section is laterally disposed at a B-location of each of said at least one hip point axis.

12. The vehicle seat base of claim 1 wherein said complementary portions include a lower portion having a ridge extending upward from a mating surface of said lower portion, and an upper portion having a recess defined in a mating surface of said upper portion for receiving said ridge when said lower and upper portions are assembled together.

13. The vehicle seat assembly of claim 1 wherein said complementary portions have at least one integrally molded connector for locking said complementary portions together when folded together about said integrally formed hinge.

14. The vehicle seat assembly of claim 13 wherein at least one of said complementary portions has said at least one integrally molded connector and at least the other of said complementary portions has a recess formed therein for receiving said at least one integrally molded connector.

15. The vehicle seat assembly of claim 1 further including a wire frame overmolded by said second foam member.

16. A seat cushion for a seat assembly in a vehicle, comprising:

a first foam member having a longitudinal length extending laterally across the seat assembly; and

a second foam member molded over said first foam portion and extending longitudinally rearward therefrom to form a seating surface,

wherein said first foam member is formed of first and second complementary molded halves that mate together along a parting line.

17. The seat cushion of claim 16 wherein said first and second complementary molded halves are connected to one another by an integrally molded hinge, said first and second complementary molded halves molded together as a single molded piece.

18. The seat cushion of claim 16 wherein said first foam member is formed of a rigid foam and said second foam member is formed of a less rigid foam.

19. The seat cushion of claim 16 wherein said complementary molded halves include at least one integrally molded connector for locking said molded halves together.

20. The seat cushion of claim 16 wherein said parting line is nonlinear.

21. A method of constructing a seat cushion for a vehicle seat assembly, comprising:

molding a first foam member having complementary portions of a first relatively rigid foam material;

securing said complementary portions together along a parting line; and

overmolding said first foam member with a second foam member, said second member forming a seating surface extending approximately orthogonally from said first foam member relative to a longitudinal length of said first foam member.

22. The method of claim 21 wherein securing said complementary portions together includes securing said complementary portions to at least one wire frame section extending approximately normal relative to said longitudinal length for transferring loads from said first foam member to a rear of the seat cushion.

23. The method of claim 21 wherein said one or both of said complementary portions are molded with integral connectors for interlocking said complementary portions together.