STRUT PORTION WITH BUCKLING CAPABILITY FOR AERODYNAMIC SKIRT

• US 20190375468A1
• Filed: 08/05/2019
• Published: 12/12/2019
• Est. Priority Date: 09/07/2015
• Status: Active Grant

• Current Assignee: Transtex, Inc. (Transtex Composite Incorporated)
• Original Assignee: Transtex LLC (Southwestern Energy Company)
• Inventors: BOIVIN, Mathieu, DEIR, Walid, BASSILY, Georges, KANTHARAJU, Swaroop Mulenahalli, TOME, Elizabeth, DAOUST, Sylvain, JAHROMI, Ali Fellah
• Granted Patent: US 10,640,156 B2
• Time in Patent Office: Days
• CPC Class Codes: B62D 35/001 For commercial vehicles or tractor-trailer combinations, e.g. caravans
• CPC Class Codes: Y02T 10/82 Elements for improving aerodynamics

Abstract

A skirt securing connector assembly for securing an aerodynamic skirt panel to a trailer is provided, the skirt securing connector assembly comprising an upper attachment portion adapted to secure the skirt securing connector assembly to the trailer, a lower attachment portion adapted to secure a lower portion of the aerodynamic skirt panel and a strut member connected, at a first end thereof, to the upper portion of the skirt securing connector assembly and connected, at a second end thereof, to the lower portion of the skirt securing connector assembly, the strut member including a longitudinal axis between the first end and the second end, the strut member including a concave portion extending along the longitudinal axis, the concave portion increasing an inertia moment of the strut member to sustain a force applied by air routing on the aerodynamic skirt.

Claims

1. A skirt securing connector assembly for securing an aerodynamic skirt panel to a trailer, the skirt securing connector assembly comprising:

an upper attachment portion adapted to secure the skirt securing connector assembly to the trailer;

a lower attachment portion adapted to secure a lower portion of the aerodynamic skirt panel; and

a strut member connected, at a first end thereof, to the upper portion of the skirt securing connector assembly and connected, at a second end thereof, to the lower portion of the skirt securing connector assembly, the strut member including a longitudinal axis between the first end and the second end, the strut member including a concave portion extending along the longitudinal axis, the concave portion increasing an inertia moment of the strut member to sustain a force applied by air routing on the aerodynamic skirt in an aerodynamic configuration and allowing the strut member to deform to buckle in a buckled configuration and bend when a force exceeding a buckling threshold of the strut member is applied on the aerodynamic skirt to momentarily move the aerodynamic skirt from the aerodynamic configuration to an object avoidance configuration and moving back by itself to the aerodynamic configuration when the force exceeding the buckling threshold of the strut member is not applied on the aerodynamic skirt.

2. The skirt securing connector assembly of claim 1, wherein the strut member is adapted to buckle on an upper half of the strut member.

3. The skirt securing connector assembly of claim 1, wherein the strut member, in the buckled configuration, includes an angle of less than 180-degree between an upper portion of the strut member and a lower portion of the strut member, in a direction opposed to the aerodynamic skirt panel.

4. The skirt securing connector assembly of claim 1, wherein the concave portion includes a cavity substantially facing the aerodynamic skirt.

5. The skirt securing connector assembly of claim 1, wherein the upper attachment portion is adapted to secure the skirt securing connector assembly to an upper portion of the aerodynamic skirt panel.

6. The skirt securing connector assembly of claim 5, wherein the upper attachment portion of the skirt securing connector assembly includes a planar portion for securing thereon the aerodynamic skirt panel and wherein the lower attachment portion includes a planar portion for securing thereon the aerodynamic skirt panel, both planar portions being parallel in respect to one another.

7. The skirt securing connector assembly of claim 1, wherein the strut member includes a first elasticity modulus in a non-buckled configuration and a second elasticity modulus in the buckled configuration.

8. The skirt securing connector assembly of claim 7, wherein the strut member, in the non-buckled configuration, is sustaining a load that is more than twice the load sustained by the strut member in the non-buckled configuration.

9. The skirt securing connector assembly of claim 1, wherein a cross-section shape of the strut member changes from a first cross-section shape in a non-buckled configuration to a second cross-section shape in the buckled configuration.

10. The skirt securing connector assembly of claim 1, wherein the skirt securing connector assembly includes a pair of skirt-securing portions laterally disposed in respect with the strut member longitudinal axis.

11. An aerodynamic skirt assembly comprising:

an aerodynamic skirt panel;

a plurality of skirt securing connectors assemblies, each skirt securing connector assembly comprising

an upper attachment portion adapted to secure the skirt securing connector assembly to the trailer;

a lower attachment portion adapted to secure a lower portion of the aerodynamic skirt panel; and

a strut member connected, at a first end thereof, to the upper portion of the skirt securing connector assembly and connected, at a second end thereof, to the lower portion of the skirt securing connector assembly, the strut member including a longitudinal axis between the first end and the second end, the strut member including a concave portion extending along the longitudinal axis, the concave portion increasing an inertia moment of the strut member to sustain a force applied by air routing on the aerodynamic skirt in an aerodynamic configuration and allowing the strut member to deform to buckle in a buckled configuration and bend when a force exceeding a buckling threshold of the strut member is applied on the aerodynamic skirt to momentarily move the aerodynamic skirt from the aerodynamic configuration to an object avoidance configuration and moving back by itself to the aerodynamic configuration when the force exceeding the buckling threshold of the strut member is not applied on the aerodynamic skirt.

12. The aerodynamic skirt assembly of claim 11, wherein the strut member is adapted to buckle on an upper half of the strut member.

13. The aerodynamic skirt assembly of claim 11, wherein the strut member, in the buckled configuration, includes an angle of less than 180-degree between an upper portion of the strut member and a lower portion of the strut member, in a direction opposed to the aerodynamic skirt panel.

14. The aerodynamic skirt assembly of claim 11, wherein the concave portion includes a cavity substantially facing the aerodynamic skirt.

15. The aerodynamic skirt assembly of claim 11, wherein the upper attachment portion is adapted to secure the skirt securing connector assembly to an upper portion of the aerodynamic skirt panel.

16. The aerodynamic skirt assembly of claim 15, wherein the upper attachment portion of the skirt securing connector assembly includes a planar portion for securing thereon the aerodynamic skirt panel and wherein the lower attachment portion includes a planar portion for securing thereon the aerodynamic skirt panel, both planar portions being parallel in respect to one another.

17. The aerodynamic skirt assembly of claim 11, wherein the strut member includes a first elasticity modulus in a non-buckled configuration and a second elasticity modulus in a buckled configuration.

18. The aerodynamic skirt assembly of claim 17, wherein the strut member, in the non-buckled configuration, is sustaining a load that is more than twice the load sustained by the strut member in the non-buckled configuration.

19. The aerodynamic skirt assembly of claim 11, wherein a cross-section shape of the strut member changes from a first cross-section shape in a non-buckled configuration to a second cross-section shape in the buckled configuration.

20. The aerodynamic skirt assembly of claim 11, wherein the skirt securing connector assembly includes a pair of skirt-securing portions laterally disposed in respect with the strut member longitudinal axis.