Reinforced open-section structural panel

Patent metadata

Field	Value
Publication number	US-10940893-B2
Application number	US-201916514175-A
Country	US
Kind code	B2
Filing date	Jul 17, 2019
Priority date	Jul 17, 2019
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

A bulkhead for a vehicle body structure includes a panel. The panel has a contour defined by a contour length and characterized by an open section having three surfaces in a cross-sectional view. The bulkhead also includes a support member embedded in the panel. The support member includes an external form configured to interface with and match at least two of the three surfaces of the contour. The support member also includes a support member length configured to fit within the contour length and a boxed cross-section having a substantially uniform shape along the support member length. The bulkhead additionally includes an adhesive applied between the external form of the support member and the interfacing surfaces of the contour to thereby bond the support member to the panel and reinforce the bulkhead. A vehicle having a structure with such a bulkhead is also considered.

First claim

What is claimed is:

1. A bulkhead for a vehicle body structure, the bulkhead comprising:
a panel having a contour defined by a contour length and characterized by an open section having three surfaces in a cross-sectional view of the panel;
a support member embedded in the panel and having:
an external form configured to interface with and match at least two of the three surfaces of the contour;
a support member length configured to fit within the contour length; and
a boxed cross-section having a substantially uniform shape along the support member length; and

an adhesive applied between the external form of the support member and the at least two of the three surfaces of the contour to thereby bond the support member to the panel and reinforce the bulkhead.

2. The bulkhead of claim 1 , wherein the panel is a high-integrity die-casting formed as a vacuum is generated in a die and having consistent material properties.

3. The bulkhead of claim 2 , wherein material of the panel is an aluminum alloy.

4. The bulkhead of claim 3 , wherein yield strength of the material of the panel is in a range of 130-160 MPa.

5. The bulkhead of claim 1 , wherein the support member is an extruded component.

6. The bulkhead of claim 5 , wherein material of the support member is an aluminum alloy.

7. The bulkhead of claim 6 , wherein yield strength of the material of the support member is at least 220 MPa.

8. The bulkhead of claim 1 , further comprising a fastener configured to extend through the external form of the support member and one of the at least two of the three surfaces of the contour to thereby supplement the adhesive and fix the support member to the panel.

9. The bulkhead of claim 8 , wherein the support member defines a pre-generated aperture configured to accept the fastener, and wherein the fastener is a blind rivet.

10. The bulkhead of claim 8 , wherein the support member is characterized by an absence of a pre-generated aperture configured to accept the fastener, and wherein the fastener is a flow drill screw configured to generate a fastener aperture by locally melting material of the support member.

11. A vehicle comprising:
a vehicle frame rail;
a bulkhead fixed to the vehicle frame rail and including:
a panel having a contour defined by a contour length, and characterized by an open section having three surfaces in a cross-sectional view of the panel;
a support member having:
an external form configured to interface with and match at least two of the three surfaces of the contour;
a support member length configured to fit within the contour length; and
a boxed cross-section having a substantially uniform shape along the support member length; and

an adhesive applied between the external form of the support member and the at least two of the three surfaces of the contour to thereby bond the support member to the panel and reinforce the bulkhead.

12. The vehicle of claim 11 , wherein the panel is a high-integrity aluminum alloy die-casting formed as a vacuum is generated in a die and having consistent material properties.

13. The vehicle of claim 12 , wherein yield strength of the material of the panel is in a range of 130-160 MPa.

14. The vehicle of claim 11 , wherein the support member is an extruded component.

15. The vehicle of claim 14 , wherein material of the support member is an aluminum alloy.

16. The vehicle of claim 15 , wherein yield strength of the material of the support member is at least 220 MPa.

17. The vehicle of claim 11 , wherein the bulkhead additionally includes a fastener configured to extend through the external form of the support member and one of the at least two of the three surfaces of the contour to thereby supplement the adhesive and fix the support member to the panel.

18. The vehicle of claim 17 , wherein the support member defines a pre-generated aperture configured to accept the fastener, and wherein the fastener is a blind rivet.

19. The vehicle of claim 17 , wherein the support member is characterized by an absence of a pre-generated aperture configured to accept the fastener, and wherein the fastener is a flow drill screw configured to generate a fastener aperture by locally melting material of the support member.

20. A bulkhead for a vehicle body structure, the bulkhead comprising:
a panel having a contour defined by a contour length and characterized by an open section having three surfaces in a cross-sectional view of the panel;
a support member embedded in the panel and having:
an external form configured to interface with and match at least two of the three surfaces of the contour;
a support member length configured to fit within the contour length; and
a boxed cross-section having a substantially uniform shape along the support member length;

an adhesive applied between the external form of the support member and the at least two of the three surfaces of the contour to thereby bond the support member to the panel and reinforce the bulkhead; and
a fastener configured to extend through the external form of the support member and one of the at least two of the three surfaces of the contour to thereby supplement the adhesive and fix the support member to the panel.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Moss Edward D
• Mcguire Mark J
• Parlow Peter M
• Saari Keith J
• Bugelli Eduardo B

Classifications

• B62D27/026

  Connections by glue bonding (in general F16B11/00; processes C09J5/00) · CPC title

• B62D29/008 Primary

  predominantly of light alloys, e.g. extruded · CPC title

• B62D25/14

  Dashboards as superstructure sub-units (other dashboard aspects B60K) · CPC title

• B62D23/00 Primary

  Combined superstructure and frame, i.e. monocoque constructions ({having impact absorbing means B62D21/15; } superstructure {or monocoque structure} sub-units {or parts or details thereof} B62D25/00 {; characterised by the material thereof B62D29/00}) · CPC title