Exterior airbag cushion for vehicle and device having the same
First Claim
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1. An exterior airbag cushion for a vehicle comprising:
- a cushion unit that surrounds a forward portion of a bumper upon a vehicle collision; and
a shape memory wire coupled to the cushion unit and configured to extend along an outer edge of the cushion unit and thus deploy the cushion unit, wherein the shape memory wire is restored to a memorized shape corresponding to a shape of the cushion unit which has expanded fully when a temperature in the cushion unit equals or exceeds a predetermined temperature;
wherein the shape memory wire is enclosed in the cushion unit by a tube made of a flexible material.
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Abstract
An exterior airbag cushion for a vehicle is constructed so that a cushion unit is rapidly expanded ahead of a vehicle and a device having the exterior airbag cushion. The exterior airbag device includes a plurality of airbag housings which are mounted to a vehicle bumper, a cushion unit which is accommodated in the airbag housings and expanded ahead of the vehicle bumper, a shape memory wire which extends along the edge of the cushion unit, and an inflator which supplies airbag gas to provide an expansionary force.
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Citations
16 Claims
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1. An exterior airbag cushion for a vehicle comprising:
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a cushion unit that surrounds a forward portion of a bumper upon a vehicle collision; and a shape memory wire coupled to the cushion unit and configured to extend along an outer edge of the cushion unit and thus deploy the cushion unit, wherein the shape memory wire is restored to a memorized shape corresponding to a shape of the cushion unit which has expanded fully when a temperature in the cushion unit equals or exceeds a predetermined temperature; wherein the shape memory wire is enclosed in the cushion unit by a tube made of a flexible material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An exterior airbag device for a vehicle, comprising:
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airbag housings mounted to a vehicle bumper; a cushion unit accommodated in the airbag housings and configured to expand ahead of the vehicle bumper; a shape memory wire extending along an outer edge of the cushion unit to deploy the cushion unit; and an inflator supplying airbag gas to provide an expansionary force to the cushion unit; wherein the shape memory wire comprises; a first wire extending along an upper front edge of the cushion unit; and a second wire extending along a lower front edge of the cushion unit, both ends of the first and second wires being connected to each other in a vertical direction. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification