Lower vehicle body structure and method of use therefor

• US 20040163875A1
• Filed: 02/26/2003
• Published: 08/26/2004
• Est. Priority Date: 02/26/2003
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (General Motors Company)
• Inventors: Chernoff, Adrian B., White, Tommy E.
• Granted Patent: US 6,899,194 B2
• Time in Patent Office: Days
• US Class Current: 180/312
• CPC Class Codes: B60G 17/0195 characterised by the regulation being combined with other vehicle control systems conjoint control of vehicle sub-units including control of suspension systems B60W10/22
• CPC Class Codes: B60G 2206/011 Modular constructions
• CPC Class Codes: B60G 2206/0114 Independent suspensions on subframes
• CPC Class Codes: B60G 2206/91 Assembly procedures
• CPC Class Codes: B60G 2800/912 Attitude Control; levelling control
• CPC Class Codes: B60G 2800/92 ABS - Brake Control
• CPC Class Codes: B60G 2800/922 EBV - Electronic brake force distribution
• CPC Class Codes: B60G 2800/96 ASC - Assisted or power Steering control
• CPC Class Codes: B60K 15/07 of gas tanks
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B62D 65/12 the sub-units or components being suspensions, brakes or wheel units
• CPC Class Codes: H01M 16/006 of fuel cells with rechargeable batteries
• CPC Class Codes: H01M 2250/20 Fuel cells in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 8/04007 related to heat exchange
• CPC Class Codes: H01M 8/04753 of fuel cell reactants
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 90/40 Application of hydrogen technology to transportation, e.g. using fuel cells

Abstract

A lower vehicle body structure for a vehicle body defining an interior space includes structural elements that extend higher than the lower extent of the interior space. The structural elements protect the spatial integrity of the interior space by being sufficiently configured and positioned to receive a load at a point higher than the lower extent of the interior space from an impact to the vehicle body. The vehicle body is configured to be matable with a chassis having systems that are responsive to nonmechanical control signals. A method for advantageously using pre-engineered lower body structures as a common base for bodies of varying styles, types, and configurations is also provided.

Claims

1. A lower body structure comprising:

a plurality of structural elements mounted with respect to one another in a predetermined spatial relationship and partially forming a vehicle body having an interior space that extends upward from a lower extent of the interior space, the plurality of structural elements sufficiently configured and positioned to receive a load at a point higher than the lower extent of the interior space from an impact to the vehicle body, thereby protecting the spatial integrity of the interior space;

wherein the partially formed vehicle body is configured to operatively connect to a vehicle chassis having a structural frame, a steering system responsive to nonmechanical control signals and operatively connected to the structural frame, a braking system responsive to nonmechanical control signals and operatively connected to the structural frame, and an energy conversion system responsive to nonmechanical control signals and operatively connected to the structural frame.

2. The lower vehicle body structure of claim 1, wherein each of the plurality of structural elements includes a coupling engageable with a complementary coupling on an upper body structure.

3. The lower vehicle body structure of claim 1, further comprising the vehicle chassis, and wherein the plurality of structural elements is operatively connected to the structural frame of the vehicle chassis.

4. The lower vehicle body structure of claim 1, further comprising the vehicle chassis and a rigid sheet coextensive with at least a portion of the chassis, and wherein the plurality of structural elements is operatively connected to the rigid sheet.

5. The lower vehicle body structure of claim 1, further comprising at least one rigid sheet at least partially forming a vehicle body floor, and wherein the plurality of structural elements is operatively connected to the at least one rigid sheet.

6. The lower vehicle body structure of claim 5, wherein the chassis includes at least one load-bearing body retention coupling operatively connected to the structural frame, and wherein the lower body structure further includes at least one complementary attachment coupling operatively connected to the rigid sheet and engageable with the at least one load-bearing body retention coupling.

7. A vehicle body defining an interior space extending upward from a lower extent of the interior space, the vehicle body comprising:

a lower body structure having a plurality of structural elements mounted with respect to one another and positioned between an exterior exposed body surface and an interior exposed body surface, the plurality of structural elements sufficiently configured and positioned to receive a load at a point higher than the lower extent of the interior space from an impact to the vehicle body, thereby protecting the spatial integrity of the interior space; and

an upper body structure operatively connected to the lower body structure;

wherein the lower body structure is configured to operatively connect to a vehicle chassis having a structural frame, a steering system responsive to nonmechanical control signals and operatively connected to the structural frame, a braking system responsive to nonmechanical control signals and operatively connected to the structural frame, and an energy conversion system responsive to nonmechanical control signals and operatively connected to the structural frame.

8. The vehicle body of claim 7, wherein the upper body structure includes a plurality of members sufficiently configured and arranged such that at least some of the plurality of members substantially abut, and are operatively connected to, respective ones of the plurality of structural elements.

9. The vehicle body of claim 7, further comprising the vehicle chassis, and wherein the plurality of structural elements is operatively connected to the structural frame of the vehicle chassis.

10. The vehicle body of claim 7, further comprising the vehicle chassis and a rigid sheet coextensive with at least a portion of the chassis, and wherein the plurality of structural elements is operatively connected to the rigid sheet.

11. The vehicle body of claim 7, further comprising at least one rigid sheet at least partially forming a vehicle body floor, and wherein the plurality of structural elements is rigidly mounted to the at least one rigid sheet.

12. The vehicle body of claim 11, further comprising the vehicle chassis, and wherein the chassis includes at least one load-bearing body retention coupling operatively connected to the structural frame, and wherein the lower body structure further includes at least one complementary attachment coupling operatively connected to the rigid sheet and engageable with the at least one load-bearing body retention coupling.

13. A method of assembling vehicle bodies, the method comprising:

assembling a first vehicle body having a first lower body structure and a first upper body structure operatively connected to the first lower body structure, the first vehicle body defining a first interior space extending upward from a lower extent, the first lower body structure including a first plurality of structural elements sufficiently configured and positioned to receive a load at a point higher than the lower extent of the first interior space from an impact to the first vehicle body, thereby protecting the spatial integrity of the first interior space;

wherein the first vehicle body is matable with a vehicle chassis having a structural frame, a steering system responsive to nonmechanical control signals and operatively connected to the structural frame, a braking system responsive to nonmechanical control signals and operatively connected to the structural frame, and an energy conversion system responsive to nonmechanical control signals and operatively connected to the structural frame.

14. The method of claim 13, further comprising assembling a second vehicle body with a second lower body structure substantially identical to the first lower body structure, and a second upper body structure operatively connected to the second lower body structure, the second vehicle body defining a second interior space extending upward from a lower extent, the second lower body structure including a second plurality of structural elements sufficiently configured and positioned to receive a load at a point higher than the lower extent of the second interior space from an impact to the second vehicle body, thereby protecting the spatial integrity of the second interior space;

wherein the second vehicle body is matable with a vehicle chassis like the vehicle chassis to which the first vehicle body is matable.

15. The method of claim 14, wherein the second upper body structure is sufficiently differently configured from the first upper body structure such that the second vehicle body is a different body style from the first vehicle body.

16. The method of claim 14, wherein the first upper body structure has a first size and shape, the second upper body structure has a second size and shape, and the second size is different from the first size or the second shape is different from the first shape.

17. The method of claim 14, wherein the first interior space is characterized by a first geometry and a first volume, and the second interior space is characterized by a second geometry and a second volume, and wherein the second geometry is different from the first geometry or the second volume is different from the first volume.

18. A vehicle comprising:

a vehicle chassis having a structural frame, a steering system responsive to nonmechanical control signals and operatively connected to the structural frame, a braking system responsive to nonmechanical control signals and operatively connected to the structural frame, and an energy conversion system responsive to nonmechanical control signals and operatively connected to the structural frame;

a vehicle body operatively connected to the vehicle chassis and defining an interior space extending upward from a lower extent of the interior space, the vehicle body having

a lower body structure having a plurality of structural elements mounted with respect to one another and positioned between an exterior exposed body surface and an interior exposed body surface, the plurality of structural elements sufficiently configured and positioned to receive a load at a point higher than the lower extent of the interior space from an impact load to the vehicle body so that the interior space maintains spatial integrity; and

an upper body structure having segments operatively connected to respective ones of the plurality of structural elements.