JPH1142995A - Air bag device for front-seat passenger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an air bag from directly hitting a windshield glass when it inflates. SOLUTION: With regard to this air bag device for a front-seat passenger, which is arranged with an inflater 5 on the inner side of an instrument panel in front of a front-seat passenger with an air bag 7 fitted to the upper side of the inflater 5 through a control plate 16 and the instrument panel above the air bag 7 provided with an opening 17 attached with a cover 8, an H shape kerf 18 is formed on the inner side of the cover 8 whose thickness is set thinner in the back part than the front part to guide the air bag 7 rear upward so that it may not directly hit a wind shield glass when it inflates outward by breaking through the cover 8 through the kerf 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device for a passenger seat of an automobile.

[0002]

2. Description of the Related Art As shown in FIG. 7, an airbag device (3) for a passenger seat is disposed in an instrument panel (2) in front of a passenger seat of an automobile (1). As shown in FIG. 8, a conventional airbag device (3) includes a casing (4) and an inflator (5) inserted in the casing (4).
A perforated control plate (6) which is passed over the casing (4) above the inflator (5); and a perforated control plate.
(6) and an airbag (7) housed in a folded state as shown by a dotted line, and the airbag device (3)
The instrument panel (2) has a lid
(8) is provided, and a cut groove (8A) is formed in an intermediate portion of the lid (8).

In the above configuration, when an impact is applied to the automobile (1), gas is injected from the inflator (5), and the gas flows through the holes (6A) of the perforated plate (6) as shown by arrows in the arrow. The airbag (7) squirts into the bag (7) and breaks through the lid (8) through the notch (8A) as shown by the solid line, and swells to the outside.

[0004]

Recently, windshield glass has been used to give a sporty appearance to automobiles.
There is a tendency that the inclination of the windshield glass (9) is increased and the curvature of the curvature is reduced, but the inclination of the windshield glass (9) is increased and the curvature of the curvature is reduced. (3) and windshield glass
(9), especially at the edge of the glass, so that the windshield glass (9) covers the airbag device (3), and the inflated airbag (7) is attached to the windshield glass. (9) was hit directly and the windshield glass (9) was damaged.

[0005]

According to the present invention, an inflator (5) is arranged inside an instrument panel (2) in front of a passenger seat as a means for solving the above-mentioned conventional problems.
An airbag (7) is mounted above the inflator (5) via a control plate (16), and an instrument panel (2) above the airbag (2) has an opening (17) with a lid (8). In the airbag device (3), an H-shaped groove (1) is formed inside the lid (8).
8) to form a passenger airbag device (3) in which the thickness of the lid (8) at the position of the cut groove (18) is set to be thinner at the rear than at the front. More preferably, a plurality of gas injection ports (17A, 1
7B, 17C, 17D, and 17E), the opening areas A, B, C, D, and E are gradually increased toward the inside.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS. In the present invention, an H-shaped V-shaped notch (18) is provided on the back side of the conventional lid (8) as shown in FIGS. The kerf (18) is composed of a pair of left and right vertical kerfs (18A, 18B) and a horizontal kerf (18C) inserted between the pair of right and left vertical kerfs (18A, 18B). The thickness of the lid (8) at the incision portion (181A, 181B) on the front side of the transverse incision (18C) of the groove (18A, 18B) is 0.8 mm,
The transverse kerf (18C) and the rear kerf portion (182A, 182B)
The thickness of the lid (8) is thinner than that and set to 0.5 mm. Further, in the present invention, the control plate (16) is replaced with an inflator of the casing (4) instead of the conventional perforated control plate (6).
(5) Send to the upper side. A plurality of gas injection ports (17A, 17B, 17C, 17D, 17E) are arranged in a row on the control plate (16).
(17A, 17B, 17C, 17D, 17E) Opening Areas A, B, C, D, E
Is set to gradually increase toward the inside.
That is, A <B <C <D <E.

Therefore, when a shock is applied to the automobile (1) and gas is injected from the inflator (5), the gas inflates the airbag (7), and the airbag (7) is inflated by the instrument panel (2). ) And press the lid (8)
Breaks through (18) and swells to the outside.
As described above, the incision (18) of (8) is larger than the thickness of the lid (8) in the incision portion (181A, 181B) on the front side of the incision (18C) than the incision (18C). Since the thickness of the lid (8) at the rear kerf portion (182A, 182B) is set to be thinner, FIG.
As shown in the figure, the transverse groove (18A) is larger than the groove (181A, 181B).
C) and the kerf portions (182A, 182B) are preferentially cleaved, so that the airbag (7) is guided rearward and downward to expand.

Further, the control plate (16) has a plurality of gas injection ports (17A, 17B, 17
C, 17D, 17E), the gas injection amount increases as going inward from the outside as shown in FIG. 5, so that the windshield glass (9) which is closer to the airbag device (3). ) At the end side (9 (A-
A)), the bulging amount of the airbag (7) is small, and the airbag (9 (BB) in FIG. 6) inside the windshield glass (9) farther from the airbag device (3).
The bulging amount of (7) increases. The airbag (7) inflated in this manner does not directly hit the windshield glass (9).

[0009]

According to the present invention, the airbag (7) is provided on the lid (8) when the gas injected from the inflator (5) inflates the lid (8) to the outside through the notch (18). Kerf
By adjusting the thickness of the lid in (18), the air shield (7) is guided rearward and upward, so that a direct hit on the windshield (9) by the inflating airbag (7) is avoided, and the windshield (9) is Damage is prevented.

[Brief description of the drawings]

 1 to 5 show a specific example of the present invention.

FIG. 1 is a perspective view of a main part of an airbag.

FIG. 2 is an explanatory perspective view of a lid.

FIG. 3 is a sectional view taken along line CC in FIG. 2;

FIG. 4 is a perspective view illustrating an airbag inflated state.

FIG. 5 is a front view illustrating an airbag inflated state.

FIG. 6 is a sectional view taken along line AA and BB in FIG. 7;

FIG. 7 is an explanatory view of the front of the vehicle.

FIG. 8 is a sectional view taken along line AA of the conventional example.

[Explanation of symbols]

 2 Instrument panel 3 Airbag device 4 Casing 5 Inflator 7 Airbag 8 Lid 9 Windshield glass 16 Control plate 17A, 17B, 17C, 17D, 17E Gas injection port 18 Cut groove 18A, 18B Vertical groove 18C Horizontal groove 181A , 181B Front kerfs 182A, 182B Rear kerfs

Claims (2)

[Claims] An inflator is disposed inside an instrument panel in front of a passenger seat, and an airbag is mounted above the inflator via a control plate. In the seat airbag device, an H-shaped kerf is formed inside the lid, and the thickness of the lid at the position of the kerf is set to be thinner at a rear portion than at a front portion. Passenger seat airbag system 2. The airbag apparatus for a passenger seat according to claim 1, wherein a plurality of gas injection ports are arranged in a row on the control plate, and an opening area of the gas injection ports is gradually increased toward an inner side.