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Active bolster with T-shaped hot weld joining bladder with trim panel

An airbag, active technology, applied in the field of active pads

Active Publication Date: 2017-10-31
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite the penetration of the sealing ribs, weld strength has been a potential weakness of active pads

Method used

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  • Active bolster with T-shaped hot weld joining bladder with trim panel
  • Active bolster with T-shaped hot weld joining bladder with trim panel
  • Active bolster with T-shaped hot weld joining bladder with trim panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] 1-3 illustrate a prior art active mat formed as a trim panel as part of a glove box door in a motor vehicle. More specifically, the trim panel 10 serves as a front trim wall receiving the inflatable bladder wall 11 . The panel 10 has an inner surface 12 with welded tracks or races 13, preferably formed as ribs extending upwardly from the inner surface, for welding the outer flange 14 of the bladder wall 11 (e.g., by means such as a hot plate Welded plastic welding) joints.

[0022] The airbag wall 11 has a near-centre recess 15 for mounting an inflator (not shown) and provided in a central attachment portion for attaching components to a reaction surface such as the inner panel of a glove box door (eg, FIG. 4 Doors 22)) in a plurality of mounting towers 16. A corrugated region 17 is formed between the tower 16 and the welded flange 14 such that a series of corrugations can unfold during inflation in a manner that allows the trim panel 10 to be displaced towards the pa...

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PUM

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Abstract

An active bolster mounts at an interior trim surface of an automotive vehicle to act as a cushion in an impact event. The bolster has a plastic-molded, expandable bladder wall having concentric pleats terminating with a skirt. A bilateral welding flange integrally extends from the skirt. A plastic-molded trim wall overlies the bladder wall. The bilateral welding flange forms a hot weld with the trim wall to provide an inflatable cavity for receiving an inflation gas during an impact event. The bilateral welding flange includes a plate member molded to extend radially outward from the skirt and a neck member molded to extend substantially parallel with the skirt. The hot weld deflects the neck member to extend radially inward from the skirt so that the neck member is exposed to the inflatable cavity whereby a pressure from the inflation gas pushes the neck member against the trim wall.

Description

technical field [0001] The present invention relates generally to active mats for occupant impact protection in motor vehicles, and more particularly to an active mat that uses a T-shaped weld flange to heat weld an inflatable airbag wall to a trim panel to increase weld strength. Background technique [0002] Active cushions are vehicle occupant protection devices that have gas-inflated air cells to absorb impact and reduce injury to passengers during a crash. In contrast to deployable airbag cushions made of various fabrics that emerge from behind various openings after inflation, active cushions use the interior trim surface itself to inflate at the onset of a crash event in order to absorb impact and dissipate energy through inflation gas discharge. US Patent 8,205,909, issued June 26, 2012 (incorporated herein by reference) discloses an active knee pad integrated into a lightweight and visually appealing glove box door. U.S. Patent 8,474,868 issued July 2, 2013 (also i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R13/02B60R21/04
CPCB60R13/02B60R21/04B60R2021/0407B60R2013/0287B29L2031/3008B29L2022/025B29L2031/721B29C65/08B29C65/1412B29C65/20B29C65/78B29C66/112B29C66/1122B29C66/131B29C66/242B29C66/24244B29C66/30321B29L2031/3014B29C66/532B29C66/54B29C66/71B29C66/73921B29C66/80B29C66/81419B29C66/8262B29C66/8322B29C65/7805B60R21/045B29K2023/06B29K2027/06B29K2023/00
Inventor 拉杰·S·罗伊乔杜里
Owner FORD GLOBAL TECH LLC