CN112896088A

CN112896088A - Bag and adopt its air bag device

Info

Publication number: CN112896088A
Application number: CN202110247283.XA
Authority: CN
Inventors: 阙中帝; 陈明敏; 薛乐乐; 李亚明; 王承
Original assignee: Ningbo Junsheng Automobile Safety System Co ltd
Current assignee: Ningbo Junsheng Automobile Safety System Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-06-04
Anticipated expiration: 2041-03-05
Also published as: CN112896088B

Abstract

The invention discloses a bag and an airbag device adopting the same, and relates to the technical field of automobile passive safety. One embodiment of the pouch comprises: including bag body and the first exhaust hole of setting on the bag body, still be equipped with exhaust adjusting device on the bag body, the bag body expandes the in-process and drives exhaust adjusting device and close gradually first exhaust hole, exhaust adjusting device closes by oneself behind the first exhaust hole completely, prevents that the first exhaust hole of closing from being opened once more. This embodiment design cost is low, simple structure, and easy the realization, and can guarantee after first exhaust opening is closed by stable locking, can not repeated opening again.

Description

Bag and adopt its air bag device

Technical Field

The invention relates to the technical field of passive safety of automobiles, in particular to a bag and an airbag device adopting the bag.

Background

For the protection of passengers in an out-of-position sitting posture, a two-stage gas generator or a complex exhaust auxiliary hole mechanism is generally adopted in the prior art to achieve the aim. The scheme has higher cost and complex structure, not only influences the stability of the unfolding posture of the safety air bag device, but also has the defects that the air exhaust auxiliary hole is reopened when the safety air bag is compressed by a passenger in the collision process, and the like.

Disclosure of Invention

In view of this, embodiments of the present invention provide a airbag and an airbag device using the same, which have low design cost, simple structure and easy implementation, and can ensure that the vent hole is stably locked after being closed, and cannot be repeatedly opened.

In order to achieve the above object, according to an aspect of an embodiment of the present invention, there is provided a bag for an airbag device, including a bag body and a first vent hole disposed on the bag body, the bag body is further provided with an exhaust adjusting device, the bag body drives the exhaust adjusting device to gradually close the first vent hole during a deployment process, and the exhaust adjusting device is automatically locked after completely closing the first vent hole, so as to prevent the closed first vent hole from being opened again.

Optionally, the exhaust gas adjusting device comprises a baffle and a pull belt; the separation blade contains the stiff end and pulls the end, the separation blade stiff end passes through the mounting to be fixed on the bag body, the separation blade pulls the end to pass through the stretching strap is connected to on the bag body, the bag body expandes the in-process and passes through the stretching strap pulls the separation blade pulls the end to close gradually first exhaust hole is closed until finally completely close behind the first exhaust hole the stretching strap is locked by oneself, prevents the separation blade pulls the end to remove once more.

Optionally, when the bag body is not unfolded, the separation blade is pulled to be located on one side of the first vent hole, a pull belt fixing piece is further arranged on the other side of the first vent hole, one end of the pull belt fixing piece is fixedly arranged on the bag body, the other end of the pull belt fixing piece is a pull belt locking end, the separation blade is pulled to be located on the first locking hole and the second locking hole are formed in the pull belt locking end respectively, the pull belt is folded oppositely to form a folded end and a forked end, the pull belt forked end sequentially penetrates through the second locking hole and the first locking hole, and the pull belt is fixedly connected to the bag body after penetrating through the inside of the folded end.

Optionally, the fixing end of the blocking piece is fixed around the first exhaust hole, and the pulling end of the blocking piece extends away from the first exhaust hole; in the unfolding process of the bag body, the pull belt pulls the pull end of the separation blade at the far end to turn over towards the first vent hole, and the bag body is locked automatically after completely covering the first vent hole.

Optionally, separation blade and stretching strap mounting formula cloth as an organic whole cover on the first exhaust hole, be equipped with on the integral type cloth with the through-hole that first exhaust hole matches, the integral type cloth is followed through-hole circumference is fixed form the separation blade stiff end on the bag body, integral type cloth one side is to keeping away from an orientation of first exhaust hole extends to form the separation blade and drags the end, another side of integral type cloth is kept away from another orientation of first exhaust hole extends to form stretching strap locking end.

Optionally, the blocking piece fixing end is fixed to one side of the first exhaust hole, and the blocking piece pulling end is located between the blocking piece fixing end and the first exhaust hole; in the unfolding process of the bag body, the pull belt can pull the pull end of the separation blade to extend towards the first vent hole until the separation blade completely covers the first vent hole and then is locked automatically.

Optionally, a guide cloth piece is further arranged on the bag body and covers the first exhaust hole, and a through hole matched with the first exhaust hole is formed in the guide cloth piece; in the unfolding process of the bag body, the pull belt can pull the pull end of the separation blade to stretch in the guide cloth sheet.

Optionally, the flap pull end is pre-secured to the pouch body by stitching or adhesive.

Optionally, a second vent hole which is normally open is arranged on the bag body.

An embodiment of the present invention further provides an airbag device, including: a housing, a gas generator and a bladder as provided in the first aspect of embodiments of the invention; the bag is folded and arranged in the shell, and the gas generator is used for inflating the bag so as to unfold the bag.

One embodiment of the above invention has the following advantages or benefits: at bag body expansion in-process, adopt exhaust adjusting device to close first exhaust hole gradually, and lock by oneself after first exhaust hole closes completely, can prevent that the first exhaust hole of closing from being opened once more, and the design cost is low, and simple structure easily realizes.

Further effects of the above-mentioned non-conventional alternatives will be described below in connection with the embodiments.

Drawings

The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:

FIG. 1 is a schematic illustration of an exhaust gas conditioning device not closing a first exhaust port in accordance with some embodiments of the invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic view of the exhaust gas regulating device closing the first exhaust port in the embodiment of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is a schematic illustration of an exhaust gas conditioning device not closing a first exhaust port in accordance with further embodiments of the present invention;

FIG. 6 is a schematic view of the embodiment of FIG. 5 with the exhaust gas regulating device closing the first exhaust port;

FIG. 7 is a schematic view of the bladder body in an initial deployment stage in a normal sitting position;

FIG. 8 is a schematic view of the bladder body in contact with an occupant in a normal sitting position;

FIG. 9 is a schematic view of the bladder body compressed by the occupant in a normal sitting position;

FIG. 10 is a schematic view of the bladder body in an initial stage of deployment in an out-of-position sitting position;

fig. 11 is a partially enlarged schematic view of C in fig. 10.

Detailed Description

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

The airbag for an airbag apparatus of the present invention includes a airbag body 10, and a first vent hole 30 and a vent adjustment means 40 provided on the airbag body 10. The bag body 10 is used to allow the inflation gas to flow in and expand from a folded state toward the passenger area. The degassing adjustment means 40 may be provided outside or inside the bladder body 10. Optionally, the degassing adjustment device 40 is disposed inside the bladder body 10 to avoid possible injury to the occupant at the junction of the degassing adjustment device 40 and the bladder body 10.

The first venting hole 30 is a closable venting hole for venting a part of the gas flowing into the pouch body 10 during the unfolding process of the pouch body 10, and the venting adjusting device 40 is driven to gradually increase the closing degree of the first venting hole 30 until the first venting hole 30 is completely closed during the unfolding process of the pouch body 10. The exhaust amount of the expanded gas can be controlled under different conditions by adjusting the degree of closing of the first exhaust hole 30 using the exhaust adjusting means 40. The exhaust adjusting device 40 is locked after completely closing the first exhaust hole 30, so that the closed first exhaust hole 30 is prevented from being opened again, and the safety of the bag is improved. The bag has the advantages of low design cost, simple structure and easy realization.

The exhaust gas adjusting device 40 includes a flap 41 and a pull tape 42. The flap 41 comprises a fixed end and a pulling end. The fixed end of the flap 41 is fixed to the pouch body 10 by a fixing member, such as an adhesive or a sewing thread sewn to the pouch body 10. The pulling end of the baffle 41 is connected to the bag body 10 through the pulling belt 42, and the pulling end of the baffle 41 is pulled by the pulling belt 42 to gradually close the first vent 30 in the unfolding process of the bag body 10 until the first vent 30 is finally and completely closed and is locked by itself, so that the baffle 41 is prevented from moving again when being pulled. In practical application, the pulling end of the blocking piece 41 can be pre-fixed on the bag body 10, the pulling end of the blocking piece 41 is fixed on the bag body 10 when the bag is not inflated, and after the bag body 10 is inflated, the pre-fixing structure fails, and the pulling end of the blocking piece 41 can be stretched. The pulling end of the flap 41 may be sewn to the pouch body 10 by sewing or may be pre-fixed to the pouch body 10 by bonding. Adopt separation blade and stretching strap to adjust the degree of closing of first exhaust hole 30 to locking first exhaust hole 30 when first exhaust hole 30 closes completely, simple structure, it is with low costs.

When the pouch body 10 is not unfolded, the pulling end of the blocking piece 41 is located at one side of the first venting hole 30, and the other side of the first venting hole 30 is provided with a pulling strip fixing piece 44. The one side and the other side mentioned here may be, for example, left and right sides, upper and lower sides, and the like. Drawstring mounting 44 one end is fixed to be set up on bag body 10 (as shown in fig. 1 and 5), and the other end is drawstring locking end, and separation blade 41 is dragged to be equipped with first locking hole 411 and second locking hole 441 on end and the drawstring mounting 44 respectively, and drawstring 42 is to folding formation to folding end (421) and bifurcation end 422, and drawstring 42 bifurcation end 422 passes second locking hole and first locking hole in proper order to through drawstring 42 folding end 421 inside after pass fixed connection on bag body 10.

The first locking hole 411 of the blocking plate 41 may be a hole formed in the blocking plate, or may be a hole structure sewn on the blocking plate, for example, two ends of a short rope are respectively fixed on the blocking plate 41 to form a first locking hole. The form of the drawtape fastener 44 may be selectively set according to the actual situation. In some alternative embodiments, the drawstring securing member 44 is a sheet-like structure, such as a cloth sheet, and the second locking hole 441 may be a hole formed in the blocking sheet or a hole sewn in the blocking sheet. In other alternative embodiments, the pull strap fastener 44 is a strap-like structure, such as a knotted string, where the hole formed by the knot in the string is the second locking hole. By providing the draw tape fixing member 44, it is possible to simplify the structure of the degassing adjustment means 40 and reduce the mass of the entire pouch while preventing the closed first degassing hole 30 from being opened again.

In practical applications, the fixed end of the blocking piece 41 can be fixed around the first venting hole 30, and the pulling end of the blocking piece 41 extends away from the first venting hole 30, as shown in fig. 1 and 2. During the unfolding of the pouch body 10, the pull tab 42 pulls the distal end of the flap 41 to fold the end over the first venting hole 30 until the first venting hole 30 is completely covered and then self-locks, as shown in fig. 3 and 4.

The flap 41 and the pull tape fastener 44 may be of a two-piece construction or may be of a one-piece construction, such as a one-piece cloth piece. The integral type sheet of cloth covers on first exhaust hole 30, is equipped with the through-hole 43 that matches with first exhaust hole 30, and the integral type sheet of cloth is fixed along through-hole 43 circumference and is formed separation blade 41 stiff end on bag body 10, and the end is dragged to the one direction that keeps away from first exhaust hole 30 of integral type sheet of cloth one side extension formation separation blade 41, and the another direction that keeps away from first exhaust hole 30 of integral type sheet of cloth side extends formation stretching strap locking end. The through hole 43 is provided to partially or completely expose the first venting hole 30 when the pouch body 10 is not unfolded. The self-locking structure has the advantages of simple structure, good stability and low cost.

As shown in fig. 1, the pull tape fixing member 44 is integrally formed with the flap 41. The pull ends of the blocking pieces 41 are respectively provided with a first locking hole 411, and the pull belt fixing pieces 44 are respectively provided with a second locking hole 441. The branch end 422 of the drawstring 42 is sequentially threaded between the second locking hole 441 and the first locking hole 411, and then passes through the interior of the folded end 421 of the drawstring 42 and is fixedly connected to the bag body 10. Optionally, the branched ends of the pulling tape 42 are fixedly attached inside the bag body 10 to avoid possible injury to the occupant due to the exposure of the junction of the pulling tape 42 and the bag body 10 to the outside.

In practical application, a fixed end of the blocking piece 4 and a pulling end of the blocking piece 41 can be fixed on the same side of the first exhaust hole 30, and the pulling end of the blocking piece 41 is located between the fixed end of the blocking piece 41 and the first exhaust hole 30; during the unfolding process of the bag body 10, the pull strip 42 can pull the pull end of the baffle 41 to extend towards the first venting hole 30 until the pull end completely covers the first venting hole 30 and then is locked by itself. Referring to fig. 5 and 6, the pulling end of the blocking piece 41 is folded and disposed at the left side of the first vent hole 30, the pulling end of the pulling strip 42 is gradually stretched in the unfolding process of the pouch body 10, and the pulling end of the blocking piece 41 is gradually stretched to the right side of the first vent hole 30, so that the closing degree of the first vent hole 30 is gradually improved until the second vent hole 30 is completely closed and then locked. In other embodiments, the pulling end of the flap 41 may be an elastic structure. The exhaust adjusting device with the structure has the advantages of simple structure and low design cost.

Further, a guide cloth 50 may be provided on the pouch body 10 to cover the first venting hole 30, and the guide cloth may be provided with a through hole 43 matching with the first venting hole 30. During the unfolding of the pouch body 10, the pull tape 42 pulls the pull end of the flap 41 to stretch within the guide sheet 50. By providing the guide cloth 50, the sealing efficiency and stability of the first exhaust holes 30 can be improved.

In order to prevent the bladder from colliding with the occupant due to the large inflation amount of the bladder during the unfolding of the bladder, a second vent hole 20, which is normally open, may be provided on the bladder body 10, as shown in fig. 7, 8 and 11.

The aforementioned baffle 41 may be a cloth or other sheet-like structure, such as a sheet-like structure having the same material as the pouch body. The number and shape of the first exhaust holes 20, the second exhaust holes 30 and the through holes 43 may be selectively set according to actual situations, for example: one, two or more in number, and in any one of the following shapes: circular and polygonal. When the second exhaust hole 30 and the through hole 43 are circular in shape, the centers of the two may coincide.

The bag and the airbag device provided by the embodiment of the invention can be used for protecting passengers in an out-of-position sitting posture and can also be used for protecting passengers in a normal sitting posture. By normal sitting position, it is meant that the occupant is seated in a relatively standard position, such as with the back adjacent the back of the seat. The out-of-position sitting posture means that the occupant sits on the seat and the sitting posture is relatively abnormal, for example, the occupant does not completely sit on the seat, the back of the occupant is not close to the backrest of the seat, and the like. In an alternative embodiment shown in fig. 7-9, which show a schematic representation of a bladder of an embodiment of the present invention for occupant protection in an in-position situation, the first vent hole 30 is closed and locked by the vent adjustment device 40 and the second vent hole 20 is normally open. In an alternative embodiment shown in fig. 10-11, which shows a schematic view of the bladder of the present invention for occupant protection in an out-of-position sitting position, the first vent hole 30 and the second vent hole 20 are simultaneously opened to increase the amount of venting due to the fact that the bladder is not fully deployed and the venting adjustment device is not activated, thereby reducing the impact of the inflated bladder body 10 on the occupant.

The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a bag for air bag device, includes bag body (10) and sets up first exhaust hole (30) on bag body (10), characterized by, still be equipped with exhaust adjusting device (40) on bag body (10), bag body (10) expand the in-process drive exhaust adjusting device (40) close gradually first exhaust hole (30), exhaust adjusting device (40) close by oneself behind first exhaust hole (30) completely, prevent that closed first exhaust hole (30) from being opened again.

2. A pouch according to claim 1, wherein said degassing adjustment means (40) comprises a flap (41) and a pull tape (42); separation blade (41) contain the stiff end and pull the end, separation blade (41) stiff end passes through the mounting to be fixed on bag body (10), separation blade (41) are pulled the end and are passed through drawstring (42) are connected to on bag body (10), bag body (10) expand the in-process and pass through drawstring (42) pull separation blade (41) are pulled the end and are closed gradually first exhaust hole (30), close completely until final behind first exhaust hole (30) drawstring (42) are locked by oneself, prevent separation blade (41) are pulled the end and are removed once more.

3. The pouch of claim 2, wherein when the pouch body (10) is not unfolded, the pulling end of the blocking piece (41) is located at one side of the first venting hole (30), the other side of the first venting hole (30) is further provided with a drawstring fixing piece (44), one end of the drawstring fixing piece (44) is fixedly arranged on the pouch body (10), the other end is a drawstring locking end, the pulling end of the blocking piece (41) and the drawstring locking end are respectively provided with a first locking hole and a second locking hole, the drawstring (42) is folded in opposite directions to form a folded end and a bifurcated end, and the bifurcated end of the drawstring (42) sequentially passes through the second locking hole and the first locking hole and is fixedly connected to the pouch body (10) after passing through the interior of the folded end of the drawstring (42).

4. A pouch according to claim 3, wherein said fixed end of said flap (41) is secured around said first venting aperture (30), said pulled end of said flap (41) extending away from said first venting aperture (30); in the unfolding process of the bag body (10), the pull strip (42) pulls the pull end of the baffle (41) at the far end to turn over towards the first vent hole (30) until the first vent hole (30) is completely covered and then is locked automatically.

5. The pouch of claim 4, wherein the blocking piece (41) and the drawstring fixing member (44) are a single-piece cloth piece covering the first venting hole (30), the single-piece cloth piece is provided with a through hole (43) matching with the first venting hole (30), the single-piece cloth piece is fixed on the pouch body (10) along the circumferential direction of the through hole (43) to form a blocking piece fixing end, one side of the single-piece cloth piece extends in one direction away from the first venting hole (30) to form a blocking piece (41) pulling end, and the other side of the single-piece cloth piece extends in the other direction away from the first venting hole (30) to form a drawstring locking end.

6. The pouch of claim 3, wherein the fixed end of said flap (41) is fixed to one side of said first venting hole (30), and the pulling end of said flap (41) is located between the fixed end of said flap (41) and said first venting hole (30); in the unfolding process of the bag body (10), the pull belt (42) can pull the pull end of the baffle plate (41) to extend towards the first vent hole (30) until the pull end completely covers the first vent hole (30) and then is locked automatically.

7. The pouch of claim 6, wherein the pouch body (10) is further provided with a guide cloth (50) covering the first venting hole (30), the guide cloth being provided with a through hole (43) matching the first venting hole (30); in the unfolding process of the bag body (10), the pull belt (42) can pull the pull end of the baffle plate (41) to stretch in the guide cloth piece (50).

8. A sachet according to claims 2 to 7, wherein the pull end of the flap (41) is pre-secured to the sachet body (10) by stitching or adhesive.

9. A sachet according to any of claims 1 to 7, wherein the sachet body (10) is provided with a second vent (20) which is normally open.

10. An airbag device, characterized by comprising: a housing, a gas generator and a bladder as claimed in any one of claims 1 to 9; the bag is arranged in the shell after being folded, and the gas generator is used for inflating the bag so as to unfold the bag.