Head portion protecting air bag apparatus
First Claim
1. A head portion protecting air bag apparatus for use with a roof side rail and a vehicle compartment side wall, the apparatus comprising:
- an inflator that supplies a gas;
an air bag housed along the roof side rail that is inflated and deployed in a curtain shape along the vehicle compartment side wall by the gas supplied from the inflator provided outside of the air bag so as to protect a head portion of an occupant, the air bag including a front seat inflating portion, a rear seat inflating portion, a non-expanding portion provided between the front seat inflating portion and the rear seat inflating portion, and a gas passage communicated with one or more inflating chambers of each of the inflating portions;
a single gas supply port provided with the air bag so that the single gas supply port opens into the gas passage from upward; and
an auxiliary inflating chamber provided with the air bag so that the auxiliary inflating chamber is communicated with the gas passage downward of the gas supply port, and the auxiliary inflating chamber opens toward the gas supply port, gas from the inflator being supplied only to the gas supply port;
wherein the gas passage is accommodated in a folded manner, for quickly expanding in a vertical direction when said air bag is inflated, wherein the inflowing gas firstly flows into the auxiliary inflating chamber to be further supplied to the front seat inflating portion and to the rear seat inflating portion via the gas passage.
1 Assignment
0 Petitions
Accused Products
Abstract
In a head portion protecting air bag apparatus in which an air bag (11) housed along a roof side rail (21) is inflated and deployed in a curtain-like shape along a vehicle compartment side wall by a gas supplied from an inflator (14) so as to protect a head portion of an occupant, the air bag (11) is provided with a front seat inflating portion (11c), a rear seat inflating portion (11d), and a gas passage (11b) communicated with inflating chambers of both of these inflating portions (11c, 11d), a gas supply port (11a) for supplying the gas supplied from the inflator (14) downward is provided corresponding to the gas passage (11b), and an auxiliary inflating chamber (11e1) is provided corresponding to the gas supply port (11a).
8 Citations
40 Claims
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1. A head portion protecting air bag apparatus for use with a roof side rail and a vehicle compartment side wall, the apparatus comprising:
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an inflator that supplies a gas; an air bag housed along the roof side rail that is inflated and deployed in a curtain shape along the vehicle compartment side wall by the gas supplied from the inflator provided outside of the air bag so as to protect a head portion of an occupant, the air bag including a front seat inflating portion, a rear seat inflating portion, a non-expanding portion provided between the front seat inflating portion and the rear seat inflating portion, and a gas passage communicated with one or more inflating chambers of each of the inflating portions; a single gas supply port provided with the air bag so that the single gas supply port opens into the gas passage from upward; and an auxiliary inflating chamber provided with the air bag so that the auxiliary inflating chamber is communicated with the gas passage downward of the gas supply port, and the auxiliary inflating chamber opens toward the gas supply port, gas from the inflator being supplied only to the gas supply port; wherein the gas passage is accommodated in a folded manner, for quickly expanding in a vertical direction when said air bag is inflated, wherein the inflowing gas firstly flows into the auxiliary inflating chamber to be further supplied to the front seat inflating portion and to the rear seat inflating portion via the gas passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A head portion protecting air bag apparatus in which an air bag housed along a roof side rail is inflated and deployed in a curtain shape along a vehicle compartment side wall by a gas supplied from an inflator so as to protect a head portion of an occupant, comprising:
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a front seat inflating portion; a rear seat inflating portion; a gas passage communicated with one or more inflating chambers of each of these inflating portions; a gas supply port for supplying the gas supplied from the inflator downward, and to the gas passage; and an auxiliary inflating chamber in communication with the gas supply port, wherein the gas passage is formed along an upper edge portion of the air bag and an effective cross sectional area of the gas passage is reduced toward at least one of the front end portion and the rear end portion thereof. - View Dependent Claims (32)
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33. A head portion protecting air bag apparatus in which an air bag housed along a roof side rail is inflated and deployed in a curtain shape along a vehicle compartment side wall by a gas supplied from an inflator so as to protect a head portion of an occupant, comprising:
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a front seat inflating portion; a rear seat inflating portion; a gas passage communicated with one or more inflating chambers of each of these inflating portions; a gas supply port for supplying the gas supplied from the inflator downward, and to the gas passage; and an auxiliary inflating chamber in communication with the gas supply port, wherein a diffusing nozzle connected to the inflator via a diffuser pipe, for diffusing the gas in a longitudinal direction at a predetermined angle, is provided so as to face the gas supply port and the gas supply port is formed in a shape expanding toward the gas passage in the longitudinal direction at an angle equal to or more than an angle of diffusion of the diffusing nozzle. - View Dependent Claims (34, 35)
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36. A head portion protecting air bag apparatus in which an air bag housed along a roof side rail is inflated and deployed in a curtain shape along a vehicle compartment side wall by a gas supplied from an inflator so as to protect a head portion of an occupant, comprising:
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a front seat inflating portion; a rear seat inflating portion; a gas passage communicated with one or more inflating chambers of each of these inflating portions; a gas supply port for supplying the gas supplied from the inflator downward, and to the gas passage; and an auxiliary inflating chamber in communication with the gas supply port, wherein a diffusing nozzle connected to the inflator via a diffuser pipe, for diffusing the gas at a predetermined angle, is provided so as to face the gas supply port and the gas is injected farther forward than a radial end point in front of an upper end of the auxiliary inflating chamber and farther rearward than a radial end point at a rear of the upper end.
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37. A head portion protecting air bag apparatus in which an air bag housed along a roof side rail is inflated and deployed in a curtain shape along a vehicle compartment side wall by a gas supplied from an inflator so as to protect a head portion of an occupant, comprising:
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a front seat inflating portion; a rear seat inflating portion; a non-expanding portion provided between the front seat inflating portion and the rear seat inflating portion; a gas passage communicated with one or more inflating chambers of each of these inflating portions; a gas supply port for supplying the gas supplied from the inflator downward, and to the gas passage; and an auxiliary inflating chamber in communication with the gas supply port, wherein a balancer chamber protruding to at least one of a front and a rear is set in a middle portion in a vertical direction of the auxiliary inflating chamber.
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38. A head portion protecting air bag apparatus in which an air bag housed along a roof side rail is inflated and deployed in a curtain shape along a vehicle compartment side wall by a gas supplied from an inflator so as to protect a head portion of an occupant, comprising:
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a front seat inflating portion; a rear seat inflating portion; a non-expanding portion provided between the front seat inflating portion and the rear seat inflating portion; a gas passage communicated with one or more inflating chambers of each of these inflating portions; a gas supply port for supplying the gas supplied from the inflator downward, and to the gas passage; and an auxiliary inflating chamber in communication with the gas supply port, wherein a deflecting chamber for applying a contractile force to a fabric portion between the front seat inflating portion and the rear seat inflating portion is set in a lower end of the auxiliary inflating chamber.
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39. A head portion protecting air bag apparatus in which an air bag housed along a roof side rail is inflated and deployed in a curtain shape along a vehicle compartment side wall by a gas supplied from an inflator so as to protect a head portion of an occupant, comprising:
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a front seat inflating portion; a rear seat inflating portion; a gas passage communicated with one or more inflating chambers of each of these inflating portions; a gas supply port for supplying the gas supplied from the inflator downward, and to the gas passage; and an auxiliary inflating chamber in communication with the gas supply port, wherein a vertical width of a forward portion of the gas passage for supplying the gas from the gas supply port to the front seat inflating portion is made different from a vertical width of a rear portion of the gas passage for supplying the gas from the gas supply port to the rear seat inflating portion, and respective vertical widths of the forward portion and the rearward portion of the gas passage are set to an integral multiple of a folding width at a time when the air bag is folded up in the vertical direction.
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40. A head portion protecting air bag apparatus in which an air bag housed along a roof side rail is inflated and deployed in a curtain shape along a vehicle compartment side wall by a gas supplied from an inflator so as to protect a head portion of an occupant, comprising:
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a front seat inflating portion; a rear seat inflating portion; a gas passage communicated with one or more inflating chambers of each of these inflating portions; a gas supply port for supplying the gas supplied from the inflator downward, and to the gas passage; and an auxiliary inflating chamber in communication with the gas supply port, wherein a diffusing nozzle connected to the inflator via a diffuser pipe, for diffusing the gas at a predetermined angle, is provided so as to face the gas supply port, an inclined portion expanding toward a lower portion is formed to a front or a rear of the gas supply port, and the air bag and the diffuser pipe are clamped and fixed in a state in which the diffuser pipe has been moved close to the inclined portion.
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Specification