Device for delaying passenger air bag expansion
First Claim
1. A device for delaying a passenger air bag expansion, comprising:
- a winding shaft which is partially wound by a rear end portion of a tether of an air bag cushion;
at least a support bracket which rotatably supports both distal ends of the winding shaft and is fixed to a bottom of an air bag housing; and
at least a pin which couples the winding shaft and the support bracket to each other to prevent the winding shaft from rotating and which is broken after a predetermined time period by the tether according to expansion force of the airbag cushion to permit a rotation of the winding shaft.
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Accused Products
Abstract
The present invention relates to a device for delaying a passenger air bag expansion, including a winding, shaft which is partially wound by a rear end of a tether. A support bracket rotatably supports both ends of winding shaft and is fixed to a bottom of an air bag housing. Winding shaft and support bracket are connected to each other through at least a pin to fix the winding shaft. Pin is broken by expansion force of the tether after a predetermined time period at an early stage of expansion of an air bag. Therefore, the expansion of the airbag cushion is delayed for a predetermined time. Since initial expansion force of airbag cushion is not strong, it prevents a child on a passenger seat from being struck by the airbag cushion.
17 Citations
7 Claims
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1. A device for delaying a passenger air bag expansion, comprising:
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a winding shaft which is partially wound by a rear end portion of a tether of an air bag cushion; at least a support bracket which rotatably supports both distal ends of the winding shaft and is fixed to a bottom of an air bag housing; and at least a pin which couples the winding shaft and the support bracket to each other to prevent the winding shaft from rotating and which is broken after a predetermined time period by the tether according to expansion force of the airbag cushion to permit a rotation of the winding shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification