KR20190130332A - Passenger airbag apparatus - Google Patents

Abstract

According to the present invention, a passenger seat airbag apparatus is disclosed. According to the present invention, the passenger seat airbag apparatus comprises: a chute unit in which an airbag cushion unit is accommodated, and an opening portion is formed for the airbag cushion unit to be deployed; a door unit installed in the opening portion to cover the opening portion; a scrim unit connected to one side of the chute unit and the door unit, and configured to form a hinge unit between the chute unit and the door unit; a protruding rib formed to protrude in a circumferential portion of the hinge unit on an internal side surface of the chute unit; and a restriction rib formed to protrude in the door unit, and restricted in the protruding rib.

Description

Passenger seat airbag device {PASSENGER AIRBAG APPARATUS}

The present invention relates to a passenger seat airbag device, and more particularly, to a passenger seat airbag device which can prevent the scrim part from being pulled out of the door part and the chute part when the door part is opened.

Typically, vehicles are equipped with air bags to protect occupants. Airbags are deployed in various locations depending on the occupant's protection. A passenger seat airbag is installed on the front side of the vehicle to protect the head of the passenger seated next to the driver. As the regulation of the vehicle for occupant protection is tightened, the size of the airbag cushion increases.

The airbag cushion portion in the folded state is accommodated in the airbag chute portion of the passenger airbag. The opening of the airbag chute portion is provided with a door portion to open when the airbag cushion portion is inflated. The airbag chute part and the door part are made of synthetic resin material. The door part is manufactured separately from the air bag chute part, and is injection molded after opening the scrim part to the door part and the air bag chute part. The scrim part connects one side of the airbag chute part to the door part, and a cutout part is formed at a circumferential part of the door part. The scrim portion serves as a hinge portion so that the door portion can be rotated. The scrim portion is made of fabric. Therefore, the door part is opened while the cutout part is torn off at the beginning of the deployment of the airbag cushion part, and the door part is rotated about the hinge part.

However, conventionally, when the airbag chute part and the door part are exposed to a high temperature environment, the ductility of the airbag chute part and the door part is increased, and as the airbag chute part and the door part are thermally expanded, the door part floats to the outside of the airbag chute part. Since the ductility of the airbag chute part and the door part is increased, and the door part is lifted outward, the scrim part can be removed from the airbag chute part and the door part at the initial stage of deployment of the airbag cushion part. Therefore, when the airbag cushion part is deployed, the door part is not rotated about the hinge part and is protruded to the indoor side. Therefore, there is a need for improvement.

Background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-1724964 (announced on April 10, 2017, the name of the invention: integrated passenger seat airbag module).

The present invention has been made to solve the above problems, and an object of the present invention is to provide a passenger seat airbag apparatus that can prevent the scrim portion from falling out of the door portion and the chute portion when the door portion is opened.

A passenger seat airbag device according to the present invention comprises: a chute portion in which an airbag cushion portion is received and an opening is formed to expand the airbag cushion portion; A door unit installed in the opening to cover the opening; A scrim part connected to one side of the chute part and the door part and forming a hinge part between the chute part and the door part; A locking rib formed to protrude from the inner surface of the chute portion to the circumference of the hinge portion; And a constraining rib formed to protrude from the door part and constrained to the locking rib.

The locking rib protrudes parallel to the inner surface of the chute portion at the opening of the chute portion, and the notch portion is formed in the restriction rib along the longitudinal direction of the restriction rib, and the restriction hole portion may be formed to be fitted to the locking rib. .

One or more notches may be formed in the restraint rib so as to be parallel to the longitudinal direction of the restraint rib.

The restraint rib may be integrally formed along one side of the door part at one side of the door part.

The restraining hole may be formed along the longitudinal direction of the notch part, and the locking rib may be integrally formed along the longitudinal direction of the notch part.

The restraint hole part may include a plurality of restraint holes formed to be spaced apart along the longitudinal direction of the notch part, and the restraint rib may include a plurality of restraining pieces that are formed to correspond to the restraint hole one to one.

The restraint rib may include a plurality of restraining pieces arranged along one side of the door part on one side of the door part.

The restraining hole may be formed one by one for each restraint piece, and the restraining rib may include a plurality of restraining pieces that are formed in one-to-one correspondence with the restraining pieces.

The restraining hole part may include a plurality of restraining holes formed by a plurality of restraint pieces, and the restraining rib may include a plurality of restraining pieces that are formed in one-to-one correspondence with the restraining pieces.

The locking rib is formed to protrude toward the inside of the chute from the inner surface of the chute, the locking rib is formed in the locking rib, the notched portion is formed along the longitudinal direction of the restriction rib, The rib may be fitted into and restrained by the engaging hole.

The locking hole may be formed along the longitudinal direction of the restraining rib, and the restraining rib may be integrally formed along the length of the locking hole.

The locking hole may include a plurality of locking holes arranged along the longitudinal direction of the locking ribs, and the restriction ribs may include a restraining piece corresponding to the locking hole one to one.

According to the present invention, as the constrained ribs and the locking ribs are constrained to pull one side of the door part, the door part may be induced to rotate about the hinge part.

Further, according to the present invention, since almost no pressure is applied to the scrim portion at the beginning of the inflation of the airbag cushion portion, the scrim portion can be prevented from falling out of the chute portion and the door portion even if the chute portion and the door portion increase in ductility due to a high temperature environment. .

Further, according to the present invention, since the hinge portion of the scrim portion can be prevented from being broken or torn by the pressure applied to the door portion, the door portion can be opened while being rotated about the hinge portion when the airbag cushion portion is deployed. Therefore, it is possible to prevent the entire door portion from being separated from the chute portion and protruding to the interior side.

1 is a perspective view showing a passenger airbag device according to a first embodiment of the present invention.
2 is a cross-sectional view showing a passenger airbag device according to a first embodiment of the present invention.
3 is a cross-sectional view showing a passenger airbag device according to a first embodiment of the present invention.
4 is an enlarged cross-sectional view showing a passenger airbag device according to a first embodiment of the present invention.
5 is a perspective view showing the structure of the locking ribs in the restraint rib in the passenger seat airbag apparatus according to the first embodiment of the present invention.
6 is a perspective view illustrating a structure of a locking rib of a restraining rib in a passenger seat airbag device according to a second embodiment of the present invention.
7 is a perspective view showing the structure of the locking ribs in the restraint rib in the passenger seat airbag apparatus according to the third embodiment of the present invention.
8 is a perspective view illustrating a structure of a locking rib of a restraining rib in a passenger seat airbag device according to a fourth embodiment of the present invention.
9 is a cross-sectional view showing the structure of the restraint rib and the locking rib in the passenger seat airbag apparatus according to the fifth embodiment of the present invention.
FIG. 10 is a cross-sectional view illustrating a state in which restraint ribs are restrained to locking ribs in a passenger seat airbag apparatus according to a fifth exemplary embodiment of the present invention.
11 is a perspective view showing the structure of the restraint rib and the locking rib in the passenger seat airbag apparatus according to the fifth embodiment of the present invention.
12 is a perspective view showing the structure of the restraint rib and the locking rib in the passenger seat airbag apparatus according to the sixth embodiment of the present invention.

Hereinafter, embodiments of a passenger airbag device according to the present invention will be described with reference to the accompanying drawings. In the process of describing the passenger seat airbag device, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

First, a passenger airbag device according to a first embodiment of the present invention will be described.

1 is a perspective view showing a passenger airbag device according to a first embodiment of the present invention, Figure 2 is a cross-sectional view showing a passenger airbag device according to a first embodiment of the present invention, Figure 3 is a view of the present invention 4 is a cross-sectional view showing a passenger airbag device according to the first embodiment, FIG. 4 is an enlarged cross-sectional view showing a passenger airbag device according to the first embodiment of the present invention, and FIG. 5 is a first embodiment of the present invention. Fig. 1 is a perspective view showing the structure of the locking rib in the passenger seat airbag device according to the restraint rib.

1 to 5, the passenger seat airbag apparatus according to the first embodiment of the present invention includes a chute portion 10, a door portion 20, a scrim portion 30, a locking rib 40 and a restraining rib ( 50).

The chute portion 10 receives the airbag cushion portion 15, and an opening is formed such that the airbag cushion portion 15 is deployed. The chute unit 10 may be formed in the shape of a square cylinder. The chute unit 10 may be formed of a synthetic resin material.

The door part 20 is installed in the opening to cover the opening. The door part 20 is manufactured separately from the chute part 10, and is connected to the chute part 10 by insert injection with the door part 20. A cutout 21 is formed at a circumference of the door 20. The cutout part 21 includes a cutout slit (not shown) formed at a predetermined interval at a circumference of the door part 20.

The scrim portion 30 is connected to one side of the chute portion 10 and the door portion 20, and forms a hinge portion 31 between the chute portion 10 and the door portion 20. The hinge portion 31 is a curved portion between the chute portion 10 and the door portion 20. The scrim portion 30 is injection molded after being interposed in one side of the chute portion 10 and the door portion 20. The scrim portion 30 is made of woven fabrics.

The catching rib 40 is formed to protrude from the inner surface 13 of the chute portion 10 to the circumference of the hinge portion 31.

The restraint rib 50 is formed to protrude from the door part 20, and is restrained by the locking rib 40. The restraint rib 50 is formed to protrude from the door part 20 so as to surround the hinge part 31.

The greatest pressure is applied to the door part 20 from when the airbag cushion part 15 starts to expand (expand), until the cutout part 21 starts to cut. At this time, as the restraining rib 50 and the locking rib 40 are pulled, one side of the door part 20 is pulled, thereby inducing the door part 20 to rotate about the hinge part 31. In addition, when the door 20 is rotated and starts to open the opening of the chute 10, the pressure applied to the door 20 is significantly reduced. Therefore, since the pressure is hardly applied to the scrim portion 30 at the initial stage of the expansion of the airbag cushion portion 15, the scrim portion 30 even if the chute portion 10 and the door portion 10 have increased ductility due to a high temperature environment. Can be prevented from falling out of the chute portion 10 and the door portion 20. In addition, since the hinge portion 31 of the scrim portion 30 can be prevented from being broken or torn due to the pressure applied to the door portion 20, the door portion 20 when the airbag cushion portion 15 is deployed. It may be opened while rotating about the hinge portion 31. Furthermore, the entire door part 20 can be prevented from being separated from the chute part 10 and protruding to the indoor side.

In addition, once the door part 20 starts to rotate about the hinge part 31, even if the locking rib 40 and the restraining rib 50 are separated, the door part 20 is continuously rotated.

The catching rib 40 protrudes in parallel with the inner surface 13 of the chute 10 at the opening of the chute 10, and the restraining rib 50 is bent toward the catching rib 40. The notch part 52 is formed in the restraint rib 50, and the restraining hole part 53 is formed in the restraint rib 50 so as to be fitted to the locking rib 40. The locking rib 40 is formed in the vertical direction. The notch part 52 is formed in a straight line shape so as to be parallel to the longitudinal direction of the restraining rib 50. Since the restraint rib 50 is bent by the notch 52, the load applied to the door part 20 may be buffered and absorbed by the deformation of the restraint rib 50.

In addition, since the locking rib 40 is fitted into and restrained by the restraining hole 53 of the restraining rib 50, the load applied to the door part 20 is restrained from being applied to the scrim part 30 and the hinge part 31. can do. Therefore, even if the ductility of the chute 10 and the door part 20 is increased as the chute 10 and the door part 20 are exposed to a high temperature environment, the scrim part 30 is not the chute 10 and the door part. Falling out at 20 can be prevented. Since the scrim portion 30 is prevented from falling out of the chute portion 10 and the door portion 20 at the beginning of the deployment of the airbag cushion portion 15, the entire door portion 20 is separated from the airbag chute portion 10. It can prevent jumping out to the side.

At least one notch part 52 is formed in the restraining rib 50 to be parallel to the longitudinal direction of the restraining rib 50. In the case where one notch portion 52 is formed, the restraining rib 50 may be bent once. When a plurality of notches 52 are formed, the restraining rib 50 may be bent a plurality of times. Since the restraining rib 50 is bent by the notch part 52, the restraining rib 50 may be deformed while absorbing the load when the load of the door part 20 is transmitted to the restraining rib 50.

The restraint rib 50 is integrally formed along one side of the door part 20 at one side of the door part 20. At this time, the restraining rib 50 may be formed in the shape of an elongated strip. Since the restraining rib 50 is integrally formed along one side circumference of the door part 20, the rigidity of the hinge part 31 may be entirely reinforced.

One restriction hole 53 is formed along the longitudinal direction of the notch part 52, and the locking ribs 40 are integrally formed along the longitudinal direction of the notch part 52. The restraint rib 50 includes a first restraint rib 50a formed perpendicular to the door part 20 and a second restraint bent from the first restraint rib 50a toward the inner side surface 13 of the chute part 10. Rib 50b.

When the airbag cushion unit 15 is inflated with an inflation pressure applied to the door unit 20 at the beginning of deployment of the airbag cushion unit 15, the first restraint rib 50a rotates counterclockwise about the notch unit 52. The second restraint rib 50b is caught by the catching hole 43 of the catching rib 40 and cannot be rotated clockwise. In addition, rotation moments are generated in the first and second restraint ribs 50a and 50b in opposite directions. At this time, since the second constrained rib 50 is pulled in a direction perpendicular to the catching rib 40, the second constrained rib 50b may be prevented from falling out of the catching hole part 43.

Next, a passenger airbag device according to a second embodiment of the present invention will be described. Since the second embodiment is substantially the same as the first embodiment except for the shape of the restraint rib and the locking rib, the features of the second embodiment will be described below.

6 is a perspective view illustrating a structure of a locking rib of a restraining rib in a passenger seat airbag device according to a second embodiment of the present invention.

Referring to FIG. 6, the restraint rib 50 is integrally formed along one side of the door part 20 at one side of the door part 20. The restraining hole 53 includes a plurality of restraining holes 53a which are spaced apart along the longitudinal direction of the notch 52. The locking rib 40 includes a plurality of locking pieces 41 formed to correspond to the restraint hole 53a one to one. The length and number of the restriction holes 53a and the locking pieces 41 may be variously changed. Since the plurality of locking pieces 41 are respectively inserted into the restraint hole 53, the restraint force of the locking piece 41 and the restraint hole 53 may be further increased.

In addition, even if the ductility of the chute 10 and the door 20 increases as the chute 10 and the door 20 are exposed to a high temperature environment, the scrim 30 at the beginning of deployment of the airbag cushion unit 15 is provided. ) Can be prevented from falling out of the chute portion 10 and the door portion 20. Since the scrim portion 30 is prevented from falling out of the chute portion 10 and the door portion 20 at the beginning of the deployment of the airbag cushion portion 15, the entire door portion 20 is separated from the airbag chute portion 10. It can prevent jumping out to the side.

Next, a passenger airbag device according to a third embodiment of the present invention will be described. Since the third embodiment is substantially the same as the first embodiment except for the shape of the restraint rib and the locking rib, the features of the third embodiment will be described below.

7 is a perspective view showing the structure of the locking ribs in the restraint rib in the passenger seat airbag apparatus according to the third embodiment of the present invention.

Referring to FIG. 7, the restraint rib 50 includes a plurality of restraining pieces 51 arranged along one side of the door part 20 at one side of the door part 20. At this time, one restraint hole 53 is formed for each restraint piece 51, and the locking rib 40 includes a plurality of restraining pieces 41 formed in one-to-one correspondence with the restraining pieces 51. Since one restraint hole 53 is formed for each restraint piece 51, one restraint rib 40 is restrained for each restraint piece 41.

Next, a passenger airbag device according to a fourth embodiment of the present invention will be described. Since the fourth embodiment is substantially the same as the first embodiment except for the shape of the restraint rib and the locking rib, the features of the fourth embodiment will be described below.

8 is a perspective view illustrating a structure of a locking rib of a restraining rib in a passenger seat airbag device according to a fourth embodiment of the present invention.

Referring to FIG. 8, in the restraint rib 50, a plurality of door parts 20 are arranged along one side circumference. The restraining hole part 53 includes a plurality of restraining holes 53a which are formed in plural pieces for each restraint piece 51, and the engaging rib 40 has a plurality of restraining pieces 41 which are formed in one-to-one correspondence with the restraining pieces 51. ). Since a plurality of restraining holes 53a are formed in each restraining piece 51, a plurality of locking pieces 41 may be restrained in each restraining piece 51. Therefore, the restraining force of the restraining piece 51 and the engaging piece 41 can be further increased.

Next, a passenger airbag device according to a fifth embodiment of the present invention will be described. Since the fifth embodiment is substantially the same as the first embodiment except for the shape of the restraint rib and the locking rib, the features of the fifth embodiment will be described below.

9 is a cross-sectional view showing the structure of the restraint rib and the locking rib in the passenger seat airbag apparatus according to the fifth embodiment of the present invention, Figure 10 is a restraint rib in the passenger seat airbag apparatus according to the fifth embodiment of the present invention 11 is a cross-sectional view showing a state of being constrained to the rib, and FIG. 11 is a perspective view showing the structure of the restraint rib and the locking rib in the passenger seat airbag apparatus according to the fifth embodiment of the present invention.

9 to 11, the locking rib 40 is formed to protrude toward the inside of the chute 10 from the inner surface 13 of the chute 10, and the locking hole 40 is provided at the locking rib 40. 43) is formed. The notch portion 52 is formed in the restraint rib 50 so as to be bent toward the inner side surface 13 side of the chute part 10, and the restraint rib 50 is fitted into the locking hole 43 and restrained. The notch part 52 is formed to be parallel to the longitudinal direction of the restraint rib 50.

One catching hole 43 is formed along the longitudinal direction of the restraining rib 50, and the restraining rib 50 is integrally formed along the longitudinal direction of the catching groove part 43.

The locking rib 40 may be formed to be perpendicular to or substantially perpendicular to the inner side surface 13 of the chute portion 10. The restraining rib 50 has a first restraining rib 50 that is primarily bent toward the inner side face 13 of the chute part 10, and an inner side face of the chute part 10 in the first restraining rib 50. And a second constrained rib 50 which is bent second to parallel with (13).

When the expansion force of the airbag cushion unit 15 is applied to the door unit 20 at the beginning of deployment of the airbag cushion unit 15, the first restraint rib 50 is rotated about the notch unit 52. At this time, since the second restraint rib 50 is supported by the inner surface 13 of the chute part 10 and restrained by the catching hole part 43 of the catching rib 40, the notch part of the second restraint rib 50 is provided. (52) side is rotated outward while pressing the inner surface 13 of the chute 10, the second restraint rib 50, the end of the second restraint rib 50, the engaging hole of the locking rib 40 ( 43) to be arrested. Therefore, it is possible to prevent the second restriction rib 50 from falling out of the locking rib 40.

Next, a passenger airbag device according to a sixth embodiment of the present invention will be described. Since the sixth embodiment is substantially the same as the first embodiment except for the shape of the restraining rib and the locking rib, the features of the sixth embodiment will be described below.

12 is a perspective view showing the structure of the restraint rib and the locking rib in the passenger seat airbag apparatus according to the sixth embodiment of the present invention.

Referring to FIG. 12, the locking hole portion 43 includes a plurality of locking holes 43a arranged along the longitudinal direction of the locking rib 40, and the restraining rib 50 corresponds one-to-one to the locking hole 43a. Constraining piece 51 is included. Each restraint piece 51 is caught and restrained by the said engagement hole 43a, respectively. Since the plurality of restraining pieces 51 are caught and restrained by the plurality of locking holes 43a, the load of the door part 20 can be prevented from being transmitted to the hinge part 31.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

10: chute portion 15: airbag cushion portion
20: door 21: cutout
30: scrim portion 31: hinge portion
40: jam rib 41: jam piece
43: locking hole 43a: locking hole
50: restraint rib 51: restraint
52: notch 53: restraint hole
53a: restraint hole

Claims (12)

A chute part in which an airbag cushion part is accommodated and an opening is formed to expand the airbag cushion part;
A door unit installed in the opening to cover the opening;
A scrim part connected to one side of the chute part and the door part and forming a hinge part between the chute part and the door part;
A locking rib formed to protrude from the inner surface of the chute portion to the circumference of the hinge portion; And
A passenger seat airbag device which is formed to protrude from the door portion, and comprises a restraining rib constrained to the locking rib.
According to claim 1,
The locking rib protrudes parallel to the inner surface of the chute part at the opening of the chute part.
The restraint rib is provided with a notch portion in the longitudinal direction of the restraint rib, the passenger seat airbag device, characterized in that the restraint hole is formed to be fitted to the locking rib.
The method of claim 2,
And at least one notch portion is formed in the restraint rib so as to be parallel to the longitudinal direction of the restraint rib.
The method of claim 2,
The restraint rib is a passenger seat airbag device, characterized in that integrally formed along one side of the door portion on one side of the door portion.
The method of claim 4, wherein
The restraining hole is formed in one along the longitudinal direction of the notch,
Seating airbag device, characterized in that the locking ribs are integrally formed along the longitudinal direction of the notch.
The method of claim 4, wherein
The restraint hole part includes a plurality of restraint holes formed to be spaced apart along the longitudinal direction of the notch part.
The locking ribs may include a plurality of locking pieces that are formed to correspond one-to-one to the restriction holes.
The method of claim 2,
The restraint rib includes a plurality of restraining pieces arranged along one side of the door part on one side of the door part.
The method of claim 7, wherein
The restraining hole is formed by one for each restraining piece,
The locking ribs may include a plurality of locking pieces that are formed in one-to-one correspondence with the restraining pieces.
The method of claim 7, wherein
The restraint hole part includes a plurality of restraint holes formed by a plurality of restraint pieces,
The locking ribs may include a plurality of locking pieces that are formed in one-to-one correspondence with the restraining pieces.
According to claim 1,
The locking rib is formed to protrude toward the inside of the chute from the inner surface of the chute,
The catching rib is formed in the catching rib,
The notch is formed in the constraint rib along the longitudinal direction of the constraint rib,
The restraint rib is seated in the engaging hole portion, characterized in that the passenger seat airbag device.
The method of claim 10,
One engaging hole is formed along the longitudinal direction of the restraint rib,
The restraint rib is a passenger seat airbag device, characterized in that formed integrally along the longitudinal direction of the engaging hole.
The method of claim 10,
The locking hole portion includes a plurality of locking holes arranged along the longitudinal direction of the locking ribs,
The restraint rib is a passenger seat airbag device, characterized in that it comprises a restraining piece one-to-one corresponding to the engaging hole.

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