Air bag device having a minimized cone depth
First Claim
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1. An air bag device comprising:
- a housing having an electronic control unit control circuit mounting surface monolithically formed with the housing, an inflater mounting surface, and a mounting portion monolithically formed with the outer periphery of the housing;
an inflater for generating gas for expanding a bag, said inflater being disposed directly on the inflater mounting surface of the housing, the inflater having a squib for igniting the inflater;
an acceleration sensor for detecting an acceleration of a vehicle during a collision of the vehicle;
an electronic control unit control circuit for making a collision judgment in response to a signal from the acceleration sensor, said electronic control unit control circuit being mounted on the electronic control unit control circuit mounting surface of the housing, the squib being electrically connected to the electronic control unit control circuit; and
a cover-like pad disposed on the housing such that the pad covers the inflater and the bag, the cover-like pad being disposed onto the mounting portion.
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Abstract
An inflater and a control unit are integrally formed so that connector cables for electrically connecting the inflater and the control unit can be shortened to the minimum required length. In some cases, the inflater and the control unit are directly connected by soldering their terminals, and a space for disposing the connector cables is not provided in a steering wheel. Thus, the cone depth can be made as small as possible.
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Citations
18 Claims
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1. An air bag device comprising:
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a housing having an electronic control unit control circuit mounting surface monolithically formed with the housing, an inflater mounting surface, and a mounting portion monolithically formed with the outer periphery of the housing; an inflater for generating gas for expanding a bag, said inflater being disposed directly on the inflater mounting surface of the housing, the inflater having a squib for igniting the inflater; an acceleration sensor for detecting an acceleration of a vehicle during a collision of the vehicle; an electronic control unit control circuit for making a collision judgment in response to a signal from the acceleration sensor, said electronic control unit control circuit being mounted on the electronic control unit control circuit mounting surface of the housing, the squib being electrically connected to the electronic control unit control circuit; and a cover-like pad disposed on the housing such that the pad covers the inflater and the bag, the cover-like pad being disposed onto the mounting portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 18)
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14. An air bag device comprising:
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a housing having a mounting surface monolithically formed with the housing; an inflater for generating gas for expanding a bag, said inflater being disposed on the housing; an acceleration sensor for detecting an acceleration of a vehicle during a collision of the vehicle; an electronic control unit control circuit for making a collision judgment in response to a signal from the acceleration sensor, said electronic control unit control circuit being disposed on the mounting surgace; a plate having a shoulder portion at an outer periphery of the plate, said housing being fixed to the plate; and a cover-like pad disposed on the shoulder portion so that the pad covers the inflater and the bag, wherein said housing defines gas injection hole through which gas from the inflater is discharged and wherein said mounting surface is constructed and arranged so that the electronic control unit control circuit is substantially adjacent to the inflater. - View Dependent Claims (15)
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16. An air bag device comprising:
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a housing having a mounting surface monolithically formed with the housing and a mounting portion monolithically formed with the housing, said mounting portion being disposed on the outer periphery of the housing; an inflater for generating gas for expanding a bag, said inflater being disposed on the housing; an acceleration sensor for detecting an acceleration of a vehicle during a collision of the vehicle; an electronic control unit for making a collision judgment in response to a signal from the acceleration sensor, said electronic control unit being disposed on the mounting surface; a cover-like pad disposed on the mounting portion so that the pad covers the inflater and the bag, wherein said housing defines a gas injection hole through which gas from the inflater is discharged and wherein said mounting surface is constructed and arranged so that the electronic control unit is substantially adjacent to the inflater. - View Dependent Claims (17)
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Specification