CN214565171U - Air bag device of automobile seat - Google Patents

Abstract

The utility model provides an automobile seat airbag device, belonging to the field of automobile accessories, which specifically comprises an airbag which is stored in a predetermined way; the gas generator is provided with a gas outlet communicated with the opening of the gas bag; wrapping cloth, for flexible fabric, be used for at least partly parcel the air pocket with gas generator, wherein, gas generator passes through two bolts the air pocket with wrapping cloth is fixed to the seat skeleton lateral wall on, wrapping cloth is made up through the suture on the air pocket, the suture can prevent the air pocket of accomodating to get into gas generator with the seat skeleton middle zone. Through the processing scheme of this application, avoid airbag device's poor assembly or failure rate, improve airbag device's stability and reliability.

Description

Air bag device of automobile seat

Technical Field

The utility model relates to an auto-parts, concretely relates to car seat airbag device.

Background

The assembly process of the automobile seat airbag device generally comprises the steps of pre-folding an air bag according to a designed folding mode, inserting a generator and a support into an opening of the air bag, installing bolts of the generator and the generator support on the side wall of a seat framework through the generator support, and then wrapping the air bag by wrapping cloth after the air bag is further folded to form the automobile seat airbag device. In emergency, the generator explodes to generate a large amount of gas, which quickly fills the air bag to expand to the side of the seat passenger so as to isolate the collision between the passenger and the vehicle door or between the passenger and the passenger, thereby ensuring the safety of the passenger.

However, the conventional assembly method does not restrain the folded air bag in the wrapping cloth, and during the assembly process, a part of the air bag is pressed on the generator or a generator bracket, so that the thickness of the folded air bag is poor and the folded air bag is assembled to a seat, and in serious cases, the air bag is locked on an air bag mounting surface between the generator and a seat framework, so that the unfolding during the explosion is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to overcome the shortcomings of the prior art, the utility model provides an avoid airbag device's poor assembly or failure rate, improve airbag device's stability and car seat airbag device of reliability.

In order to achieve the above object, the present invention provides an airbag device for a vehicle seat, including: an air bag which is stored in a predetermined manner; the gas generator is provided with a gas outlet communicated with the opening of the gas bag; wrapping cloth, for flexible fabric, be used for at least partly parcel the air pocket with gas generator, wherein, gas generator passes through two bolts the air pocket with wrapping cloth is fixed to the seat skeleton lateral wall on, wrapping cloth is made up through the suture on the air pocket, the suture can prevent the air pocket of accomodating to get into gas generator with the seat skeleton middle zone.

In one embodiment, the stitching is disposed within or along the edge contour of the projected area of the inflator on the wrapping sheet as a whole.

In one embodiment, the suture comprises a plurality of transverse sutures.

In one embodiment, the stitches include a transverse stitch between two bolts and a longitudinal stitch along a longitudinal edge of the inflator.

In one embodiment, the wrapping cloth is provided with through holes at the front end and the rear end, the rear end of the wrapping cloth is sewn on the air bag, and the gas generator bolt penetrates through the through hole at the rear end of the wrapping cloth and the front end of the wrapping cloth to wrap the contained air bag and sleeve the through hole at the front end on the gas generator bolt.

In one embodiment, the wrapping cloth is in a half-bag shape and has longitudinal restricting portions at upper and lower ends of the wrapping cloth, and upper and lower portions of the air bag are respectively fitted into the longitudinal restricting portions.

In one embodiment, the longitudinal restriction is formed by folding the wrapping sheet along the longitudinal folding line and closing the at least partially overlapped region of the two ends by sewing or heat pressing.

In one embodiment, the longitudinal fold line is a pre-tear line.

In one embodiment, the flexible fabric is a nonwoven fabric.

Compared with the prior art, the utility model has the advantages of: wrapping cloth is made up on the air pocket, is equipped with the suture in the gas generator region between gas generator and seat skeleton promptly, and the suture is fixed with the sewing of the single-layer bag cloth that the air pocket is located the bolt side and parcel cloth, has avoided the air pocket that is in the state of accomodating to get into gas generator region to avoid the assembly of gasbag device bad, reduced the failure rate, improved the stability and the reliability of gasbag device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of an airbag device for a vehicle seat according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an airbag assembly for a vehicle seat according to an embodiment of the present invention;

fig. 3 is a schematic view of the laying of the wrapping cloth according to another embodiment of the present invention; and

fig. 4 is a schematic view of the wrapping cloth after sewing according to another embodiment of the present invention.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number and aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that aspects may be practiced without these specific details.

As shown in fig. 1, the present embodiment provides an airbag device 100 for a vehicle seat including an airbag 1, a wrapping cloth 2, and a gas generator 3. The vehicle seat airbag device 100 has a gas generator region B having a width similar to that of the gas generator 3 and the remaining air pocket region a.

The airbag 1 can be stored in a predetermined manner, for example, can be provided in a rolled and/or folded manner. The gas outlet of the gas generator 3 communicates with the opening of the gas bag 1.

The wrapping cloth 2 is a flexible fabric for at least partially wrapping the air bag and the gas generator. The wrapping cloth 2 is sewn to the airbag 1 by a sewing thread 5. That is, a sewing line 5 is provided in the gas generator region B between the gas generator 3 and the seat frame, and the sewing line 5 sews and fixes the single-layer bag cloth and the wrapping cloth 2 of the airbag 1 on the bolt side. In one embodiment, the stitching 5 is provided on the inner or edge contour of the projected area of the inflator on the wrapping cloth. The sewing line 5 can prevent the stored air bag from entering the middle area between the inflator and the seat frame. The bag 1 in the stored state can be prevented from entering the gas generator region B by the wrapping cloth 2 and the sewing thread 5. In one embodiment, the flexible fabric is a nonwoven fabric.

The gas generator 3 has two or more bolts, and may be integrally formed with the gas generator or may be a generator holder with bolts, and the gas generator 3 is coupled to the generator holder by a clip. The air bag 1 is provided with bolt through holes matched with the number of bolts, and the wrapping cloth 2 is provided with bolt through holes 2 times of the number of the bolts for the bolts to pass through. The gas generator 3 is fixed to the side wall of the seat frame by two bolts through the gas bag 1 and the wrapping cloth 2. In one embodiment, the stitches 5 are placed close to the bolts of the gas generator 3. In another embodiment, the suture 5 may comprise at least one transverse suture and one longitudinal suture; the stitches 5 may be several transverse stitches or longitudinal stitches.

Above-mentioned car seat gasbag device, wrapping cloth are made up on the air pocket, are equipped with the suture in the gas generator region between gas generator and seat skeleton promptly, and the suture is located the individual layer bag cloth of bolt side with the air pocket and is sewed up with the wrapping cloth and make fixedly, has avoided the air pocket that is in the state of accomodating to get into gas generator region to avoid the assembly of gasbag device bad, reduced the failure rate, improved the stability and the reliability of gasbag device.

In one embodiment, as shown in figure 2, the gas generator has two bolts 30 and the stitching 5 comprises a transverse stitch between the two bolts and a longitudinal stitch along the longitudinal edges of the gas generator. The stitches 5 may include a transverse stitch between the through holes 30 of the two bolts and a longitudinal stitch connected to the end of the transverse stitch.

In one embodiment, the wrapping cloth 2 is fixed to the airbag 1 by a sewing line 5 at a predetermined position, as shown in fig. 3, two bolt through holes are correspondingly formed at the front end and the rear end of the wrapping cloth 2, the wrapping cloth 2 is sewn to the airbag 1 in advance by the sewing line 5, and the rear end of the wrapping cloth 2 is sewn to the airbag 1. The gas generator 3 is inserted into the air bag 2 through an insertion hole 31 of the air bag 2, bolts of the gas generator 3 sequentially penetrate through the air bag, a rear end bolt through hole of the wrapping cloth and a front end bolt through hole of the wrapping cloth are fixed on the side wall of the seat framework, and the stored air bag is tightened through the matching of the front end bolt through hole and the rear end bolt through hole of the wrapping cloth and the bolts. The bolt of the gas generator passes through the bolt through holes at the rear ends of the air bag 1 and the wrapping cloth 2, the air bag 1 is folded according to the designed mode, the front end of the wrapping cloth 2 wraps the folded air bag 1, and the bolt through hole at the front end of the wrapping cloth is sleeved on the bolt of the gas generator 3. In one embodiment, both ends of the wrapping sheet are simultaneously fixed to the bolts of the gas generator for wrapping and restricting the lateral expansion of the airbag 1. The folded gas pouch 1 is difficult to enter into the gas generator region B due to the existence of the sewing line 5.

In one embodiment, the wrapping cloth 2 is in a half-bag shape, and is obtained by folding the middle of a flat cloth piece and sewing and fixing two side edge regions of an overlapped region, the sewn two side edges form a longitudinal limiting part 21 for limiting the longitudinal extension of the air bag, and the wrapping cloth wraps the received air bag. As shown in fig. 2, the air bag 1 is folded according to a designed manner, and is integrally sleeved between the longitudinal limiting parts at the two sides of the wrapping cloth 2, the front end of the wrapping cloth wraps the folded air bag 1, and the bolt through holes at the front end of the wrapping cloth are sleeved on the bolts of the gas generator 3. Both ends of the wrapping cloth piece are simultaneously fixed on the generator bolt, and the wrapping cloth piece wraps and limits the transverse extension of the folded air bag 1, and the longitudinal limiting parts at both sides wrap and limit the longitudinal extension of the folded air bag 1. Such a half-wrapped bag-like wrapping cloth can restrain the peripheral area of the folded air bag region, and at the same time, the folded air bag 1 hardly enters the gas generator region B due to the existence of the sewing line 5.

In one embodiment, as shown in figures 3 and 4, the wrapping cloth is provided with a longitudinal fold line in the middle and closed lines at both ends of the longitudinal fold line, the closed lines at least closing and fixing both ends of the partially overlapped region. In one embodiment, the longitudinal fold line is a pre-tear line. The wrapping cloth in fig. 3 is folded along the longitudinal folding line 22, and the two end closing lines 23 of the overlapped area are closed and fixed to form a longitudinal limiting portion, the closing manner may be sewing, hot pressing, and the like, and finally the half-bag type bag-shaped structure shown in fig. 4 is formed.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (9)

1. An airbag device for a vehicle seat, comprising:

an air bag which is stored in a predetermined manner;

the gas generator is provided with a gas outlet communicated with the opening of the gas bag;

a wrapping cloth, which is a flexible fabric, at least partially wrapping the air bag and the gas generator,

the gas generator is fixed to the side wall of the seat framework through two bolts penetrating through the gas bag and the wrapping cloth, the wrapping cloth is sewn on the gas bag through a sewing line, and the sewing line can prevent the accommodated gas bag from entering the middle area of the gas generator and the seat framework.

2. The airbag device for a vehicle seat according to claim 1, wherein the sewing line is provided on an inner portion or an edge contour of a projected area of the inflator on the wrapping cloth.

3. The car seat airbag assembly of claim 2, wherein the stitching comprises a plurality of transverse stitches.

4. The airbag assembly of claim 2, wherein the stitching comprises a transverse stitching between two bolts and a longitudinal stitching along a longitudinal edge of the inflator.

5. The airbag apparatus for a vehicle seat according to any one of claims 1 to 4, wherein the wrapping cloth is provided at front and rear ends thereof with through holes, the wrapping cloth rear end is sewn to the airbag, the inflator bolt is inserted through the through hole at the wrapping cloth rear end, and the wrapping cloth front end receives the airbag and the through hole at the front end is fitted over the inflator bolt.

6. The airbag apparatus for a vehicle seat according to claim 5, wherein the wrapping cloth is in a half-bag shape having longitudinal regulating portions at upper and lower ends of the wrapping cloth, and upper and lower portions of the housed airbag are respectively fitted into the longitudinal regulating portions.

7. The airbag apparatus for a vehicle seat according to claim 6, wherein the longitudinal folding line is provided at both ends thereof with a closed line, the closed line closes and fixes at least both ends of a part of the overlapping area, and the longitudinal restriction portion is formed by folding the wrapping cloth along the longitudinal folding line and closing and fixing the closed lines at both ends of the overlapping area by a sewing or heat pressing method.

8. The car seat airbag assembly of claim 7, wherein the longitudinal fold line is a pre-tear line.

9. The airbag device for vehicle seats of any one of claims 1 to 4, wherein the flexible fabric is a non-woven fabric.

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