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Tube with extruded flanges holding wall-reinforcing insert

a technology of inserts and tubes, applied in the field of tubes, can solve the problems of adding an undesirable amount of cost and weight to the bumpers, adding cost and weight, adding additional parts and pieces, and adding quality problems,

Inactive Publication Date: 2001-12-20
SHAPE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this can add an undesirable amount of cost and weight to the bumpers.
However, this can add cost and weight, as well as complexity to the assembly (including additional parts and pieces), quality problems, added secondary processes, additional inventory, fixturing problems, etc.

Method used

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  • Tube with extruded flanges holding wall-reinforcing insert

Examples

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Embodiment Construction

[0015] A bumper beam 10 (FIG. 1) for automobiles includes a tubular beam 11 having front, rear, top, and bottom walls 12-15, respectively, that define a cavity 11'. For example, an exemplary tubular beam 11 is shown and described in Sturrus Pat. No. 5,104,026, the entire contents of which are incorporated herein by reference. A tubular wall-reinforcing insert 16 is located in the cavity 11' at each end of the beam 11, so that the insert 16 is located in cantilevered ends of the beam 11, outside of the bumper mounts to a vehicle frame, at a location where corner impacts often occur in vehicles. The tubular insert 16 includes front and rear ends 17 and 18 positioned in the cavity 11' adjacent the front and rear walls 12 and 13, respectively, in a manner that reinforces the front and rear walls 12 and 13 for improved impact strength. The front wall 12 has a hole 19 defined by marginal material of the front wall 12. The marginal material is inwardly extruded to form an integrally formed...

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PUM

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Abstract

A tubular bumper beam for automobiles includes a rollformed tubular beam and tubular inserts positioned transversely in end sections of the beam. The illustrated tubular insert includes front and rear ends positioned adjacent the front and rear walls of the tubular beam in a manner that reinforces the front and rear walls for improved corner impact strength. Material is extruded from the beam walls into the ends of the insert to form deformed tubular portions that telescopingly extend into the tubular insert to retain the insert in the beam, and further include radiused annular root sections that connect the tubular portions with the walls of the beam, and still further optionally include dished areas around the root sections that help stabilize the beam walls. A method related to the above is also disclosed.

Description

[0001] The present application claims benefit under 35 USC .sctn.119(e) of provisional application serial No. 60 / 203,559, filed May 11, 2000, entitled TUBE WITH EXTRUDED FLANGES HOLDING WALL-REINFORCING INSERTS, the entire contents of which are incorporated herein by reference.BACKGROUND OF INVENTION[0002] The present application concerns tubes, such as a tubular automotive front bumper beam or door beam, or a tubular bracket for furniture, and more particularly concerns a tube having an insert positioned within the tube to prevent premature collapse upon experiencing impact or high bending stress.[0003] Tubular bumpers have received wide acceptance in the automotive market based on their high strength-to-weight ratio. However, further improvements are desired to stabilize predetermined areas on certain wall sections of tubular bumper beams for improved impact strength. For example, it is desirable in some bumper beam designs to better stabilize the front and rear wall sections near...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B60R19/18B60R21/00F16B17/00
CPCB60R19/18B60R2019/1813B60R2021/0009F16B17/004
Inventor JOHNSON, MARC RICHARD
Owner SHAPE CORP