CN218949128U - Safety airbag and automobile - Google Patents

Abstract

The embodiment of the application provides an airbag and an automobile. The airbag is adapted to be disposed on an a-pillar of an automotive frame, wherein the airbag includes an airbag body and a tether. The airbag body is provided with an inflation area, a first non-inflation area and a second non-inflation area. The second non-inflatable region is interposed between the inflatable region and the first non-inflatable region and extends toward the inflatable region. The drawstring comprises a fixed end and a free end which are opposite, wherein the fixed end is connected to the second non-inflatable region, the free end extends out of the airbag body, and after the airbag body is folded and rolled, the fixed end of the drawstring is coated in the airbag body. In the embodiment of the application, the stability of the airbag body during deployment can be improved under the condition that the length of the drawstring is not changed.

Description

Safety airbag and automobile

Technical Field

The application relates to the field of automobile safety airbags, in particular to an airbag and an automobile.

Background

Along with the improvement of the awareness of the CIASI (China insurance automobile safety index), more and more host factories bring the evaluation of the CIASI on the whole automobile collision into development requirements, wherein the CIASI puts higher requirements on the development of a side air curtain at 25% offset collision so as to protect the head of an occupant; however, in the conventional 25% small offset collision test, the head of the passenger often deviates into the seam between the front air bag and the side air curtain of the driver, so that the head of the passenger cannot be completely restrained by the air bag, and secondary collision injury is caused.

In general, if the length of the side airbag is required to meet the requirement of small bias of CIASI 25% on protecting the passenger, the airbag can only be further lengthened, however, when the airbag is further lengthened, the airbag is easy to interfere with an air outlet and an air duct, the length of the pulling belt is also required to be relatively shortened, and the short pulling belt can cause unstable posture of the airbag in place and seriously affect the safety of the passenger.

Disclosure of Invention

The utility model provides a plurality of aspects provide an air bag and car, through the extension and the folding characteristic of second non-charging zone, solve general air bag and further lengthen easily lead to gasbag and air outlet, wind channel to interfere to and influence draw belt length scheduling problem.

The embodiment of the application provides an air bag, which comprises an air bag body and a drawstring, wherein the air bag body comprises an inflation area, a first non-inflation area and a second non-inflation area. The first non-inflatable region surrounds the inflatable region, and the second non-inflatable region is between the inflatable region and the first non-inflatable region. The drawstring comprises a fixed end and a free end, wherein the fixed end is connected to the second non-inflatable region, and the free end extends out of the airbag body.

In some embodiments, the airbag further comprises a first folded state and a second folded state. The airbag body folds in a first direction in the first folded state and folds in a second direction in the second folded state, wherein the second non-inflatable region extends in the first direction toward the inflatable region, and at least a portion of the first non-inflatable region folds back under the second non-inflatable region in the first folded state.

In some embodiments, the second non-inflatable region includes opposing extension and closure segments. The extension section is connected between the first non-inflatable region and the closed section, the closed section extends towards the direction of the inflatable region, and the fixed end of the drawstring is connected with the closed section.

In some embodiments, the extension is folded back to the bottom side of the airbag body in the first folded state, the closed section is exposed to the top side of the airbag body, and the free end of the drawstring is maintained outside the airbag body.

In some embodiments, the fixed end of the drawstring is encased within the airbag body in the second folded state.

In some embodiments, the airbag body includes a mounting side and a movable side that is foldable toward the mounting side and is folded to one side of the mounting side.

In some embodiments, the second non-inflatable region is disposed within the inflatable region and is isolated from the first non-inflatable region.

The embodiment of the application also provides an automobile, which comprises a frame and an airbag. The safety airbag comprises an airbag body and a drawstring, wherein the airbag body is arranged on an A column of the frame and comprises an inflation area, a first non-inflation area and a second non-inflation area. The first non-inflatable region surrounds the inflatable region, the second non-inflatable region is arranged between the inflatable region and the first non-inflatable region, and the second non-inflatable region is connected with the first non-inflatable region and extends towards the inflatable region for a preset distance. The drawstring comprises a fixed end and a free end, wherein the fixed end is connected to the second non-inflatable region, and the free end extends out of the airbag body and is fixed on the A column.

In this application embodiment, through the setting mode that the second non-inflatable region is between inflatable region and first non-inflatable region and the folding characteristic of first non-inflatable region can be towards inflatable region, can increase air bag length effectively, and let the stretching strap keep should have length when the gasbag can stabilize the expansion, let air bag can not produce with air outlet and wind channel when assembling the A post in the frame and interfere, and can keep the stability of gasbag under the state of use through the stretching strap after the gasbag is expanded, and fill the blank region between driver's gasbag and the side curtain after the gasbag is expanded, promote passenger's security.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a front view of an airbag of an embodiment of the present application.

Fig. 2 is a schematic view of an airbag according to an embodiment of the present application in a first folded state.

Fig. 3 is a schematic view of an airbag of an embodiment of the present application folded in a second direction.

Fig. 4 is a schematic view of an airbag according to an embodiment of the present application disposed on an a-pillar.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

Referring to fig. 1 to 4, an airbag 1 is provided in an embodiment of the present application, which is suitable for use in the automotive field and is used for protecting a driver or a passenger in the event of a collision of an automobile. The airbag 1 includes an airbag body 10 and a tether 20. The airbag body 10 is disposed on an a-pillar 72 of a vehicle frame for inflating and expanding from the a-pillar 72 into a vehicle cabin to form a side curtain during a vehicle collision. The airbag body 10 includes an inflation region 11, a first non-inflation region 12, and a second non-inflation region 13. The airbag body 10 is an airbag, the inflation region 11 may be, but is not limited to, an inflatable region formed around the airbag by sewing with a sewing thread, and the non-inflation region may be, but is not limited to, other non-inflatable regions.

In some embodiments of the present application, the non-inflatable region is another region that is separated at the periphery of the inflatable region 11. Wherein the non-inflatable region comprises a first non-inflatable region 12 and a second non-inflatable region 13. The first non-inflatable region 12 surrounds the inflatable region 11, and the second non-inflatable region 13 is a transverse U-shaped range surrounded by a part of the sewing thread on the outer periphery of the inflatable region 11 extending toward the inflatable region 11, so that the second non-inflatable region 13 is connected to the first non-inflatable region 12 and extends toward the inflatable region to be between the inflatable region 11 and the first non-inflatable region 12.

It will be appreciated that the shape of the second non-inflatable region 13 is not limited to that described above. In other possible embodiments, the second non-inflatable region 13 may be altered in shape as desired by adjusting the sewing thread path of the inflatable region 11. Alternatively, in other embodiments of the present application, the second non-inflatable region 13 may be isolated from the first non-inflatable region 12 by being independently disposed within a range surrounded by the sewing thread of the inflatable region 11, and maintained at a proper distance. The second non-inflatable region 13 is mainly connected to one end of the pull strap 20, so that the area of the second non-inflatable region 13 is smaller than the area of the inflatable region 11, and thus the existing functions of the inflatable region 11 are not affected.

Furthermore, in the present embodiment, the second non-inflatable region 13 may be, but is not limited to, extending a predetermined distance in the first direction D1 toward the inflatable region 11 to form the lateral U-shaped extent described above. The second non-inflatable region 13 comprises opposing extension segments 131 and closure segments 132, wherein the closure segments 132 are adjacent to the inflatable region 11, and the extension segments 131 are connected between the first non-inflatable region 12 and the closure segments 132.

The drawstring 20 includes opposite fixed and free ends 21, 22. The fixed end 21 is connected to the closed section 132 of the second non-inflatable region 13. The free end 22 extends beyond the airbag body 10 for attachment to the a-pillar 72 of the vehicle frame and is spaced a suitable distance from the airbag body 10 so that the tether 20 pulls the airbag body 10 in the proper protective position when the airbag body 10 is fully deployed.

It should be noted that, in the prior art, when the structural design of the air bag needs to be increased, the length of the pull strap 20 can be generally only cut down, but the air bag body 10 provided in the embodiment of the present application extends in the first direction D1 through the path change of the sewing thread to form the second non-inflatable region 13 in the first direction D1 for fixing the fixing end 21 of the pull strap 20, so as to increase the overlapping range of the pull strap 20 and the non-inflatable portion of the air bag body 10. Meanwhile, the airbag body 10 can reversely fold part of the first non-inflatable region 12 to the lower part of the inflatable region 11 in the first direction D1, so that the length of the airbag body 20 is unchanged when the airbag body is installed on an A column of a frame, interference to an air outlet and an air duct can be avoided, the original length of the drawstring 20 can be maintained, and the situation that the drawstring 20 is too short after being cut to lead to unstable air bags is avoided. Of course, the predetermined distance that the second non-inflatable region 13 extends may also be determined according to the position of the airbag body 10 when disposed on the a-pillar, so as to maintain the stability provided by the pull strap 20.

In the application where the airbag 1 is assembled to a vehicle frame, the airbag 1 can be folded from a flattened state to an appropriate structural configuration, for example, folded or rolled into a folded state, depending on the installation position of the airbag, and thus can have various folded states. In the present embodiment, the folded state of the a-pillar 72 that is convenient to be mounted on the frame of the automobile is taken as an example, but not limited thereto. Thus, the use states of the airbag 1 provided in the embodiments of the present application include a first folded state 1A and a second folded state 1B, and the airbag body 10 further includes a mounting side 101, a movable side 102, a top side, and a bottom side. In which fig. 1 shows the top side of the airbag body 10, while the bottom side is provided on the other side with respect to the top side. The mounting side 101 and the movable side 102 are provided at upper and lower opposite side edges of the airbag body 10, respectively. The mounting side 101 is configured to be secured to the a-pillar 72, and the movable side 102 is configured to be folded toward the mounting side 101 and folded to one side of the mounting side 101.

In the first folded state 1A (as shown in fig. 2), a portion of the first non-inflatable region 12 located on the right side of the airbag body 10 is folded toward the first direction D1 to the bottom side of the airbag body 10, and the extension 131 of the second non-inflatable region 13 is also folded back toward the bottom side of the airbag body 10, so that the closed section 132 is maintained in a state of being exposed to the top side of the airbag body 10. As shown in fig. 1 and 2, in the first folded state 1A, the airbag body 10 is shortened from the original length L1 to the second length L2, and in the first folded state 1A, the tether 20 is not folded along with the airbag body 10, and the free end 22 thereof remains in a state of being protruded out of the airbag body 10.

As shown in fig. 3 and 4, in the second folded state 1B, the airbag body 10 is folded in the second direction D2, that is, the movable side 102 of the airbag body 10 is folded in the second direction D2 from bottom to top toward the mounting side 101 and is folded to one side of the mounting side 101. And in the second folded state 1B, the fixed end 21 of the pull strap 20 may be, but is not limited to being, wrapped in the airbag body 10. At this time, the free ends 22 of the pull straps are maintained in a state of being extended out of the airbag body 10 so that the airbag body 10 is fixed to the a-pillars 72, respectively. It will be appreciated that in other embodiments of the present application, the fixed end 21 of the pull strap 20 may be exposed to the outside of the airbag body 10 in the second folded state according to the folding direction or the installation position of the airbag 1.

After the folding and rolling of the airbag body 10 is completed, the mounting side 101 of the airbag body 10 can be secured to the a-pillar 72 of the vehicle frame by fasteners, and the free end 22 of the pull strap 20 can be pulled toward the side remote from the airbag body 10 and secured to the a-pillar 72 at a suitable distance from the airbag body 10. Therefore, the airbag 1 provided in this embodiment of the present application extends a predetermined distance in the first direction D1 by using the second non-inflatable region 13, so that the position of the fixed end 21 of the pull strap 20 is extended in the direction of the inflatable region 11, and the free end 22 is fixed on the a pillar without interfering with the arrangement of the air outlet and the air duct without changing the length of the pull strap 20, and the protection performance of the CIASI 25% small offset collision lower side air curtain on the occupant is not affected, thereby increasing the side air-curtain deployment range and effectively protecting the head of the occupant.

As can be seen from the above description, in the embodiments of the present application, by the configuration of the first non-inflatable region and the second non-inflatable region, the length of the inflatable region of the airbag can be effectively increased, so as to fill the blank region between the airbag and the side curtain on the front of the driver after the airbag is deployed, and avoid the head of the passenger from drilling into the a pillar during collision. Meanwhile, through the arrangement of the second non-inflatable region, the length of the drawstring is not required to be shortened when the inflatable region is increased. In addition, the partial reverse folding of the airbag body towards the bottom side is utilized in the folding method, the length of the airbag body during folding can be further shortened, and the stretching strap can not be folded, so that the stretching strap can be ensured to be in a normal state and in a normal position, and the problem of unstable unfolding caused by folding the stretching strap into the airbag body can be effectively avoided.

In addition, in the application, the airbag body is partially folded in the first direction, so that the length of the airbag body can be shortened, and the airbag folded after being partially folded has the advantages in that the airbag folded after being partially folded is not affected by normal deployment of the airbag folded after being partially folded, and in that the airbag folded directly is folded at the same time (for example, 20 ms) compared with the airbag folded directly without being partially folded, when the ignition comparison test is performed.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims (8)

1. An airbag, comprising:

the airbag comprises an airbag body, a first non-inflation area and a second non-inflation area, wherein the first non-inflation area surrounds the outside of the inflation area, and the second non-inflation area is arranged between the inflation area and the first non-inflation area; and

the drawstring comprises a fixed end and a free end, wherein the fixed end is connected to the second non-inflatable region, and the free end extends out of the airbag body.

2. The airbag of claim 1, comprising a first folded state in which the airbag body is folded in a first direction and a second folded state in which the second non-inflatable region extends in the first direction toward the inflatable region, and wherein at least a portion of the first non-inflatable region is folded back under the second non-inflatable region in the first folded state.

3. The airbag of claim 2 wherein said second non-inflatable region includes opposing extension and closure segments, said extension being connected between said first non-inflatable region and said closure segment, said closure segment extending in a direction toward said inflatable region, said fixed end of said tether being connected to said closure segment.

4. The airbag of claim 3 wherein said extension is folded back to the bottom side of said airbag body in said first folded condition, said closed section is exposed to the top side of said airbag body, and said free end of said drawstring is maintained outside of said airbag body.

5. The airbag of claim 4 wherein said fixed end of said tether is encased within said airbag body in said second folded condition.

6. The airbag of claim 2 wherein said airbag body includes a mounting side and a movable side, said movable side being foldable toward and to one side of said mounting side.

7. The airbag of claim 1 wherein said second non-inflatable region is disposed within said inflatable region and is isolated from said first non-inflatable region.

8. An automobile comprising a frame and an airbag, the airbag comprising:

the air bag body is arranged on an A column of the frame and comprises an inflation area, a first non-inflation area and a second non-inflation area, the first non-inflation area surrounds the inflation area, the second non-inflation area is arranged between the inflation area and the first non-inflation area, and the second non-inflation area is connected with the first non-inflation area and extends towards the inflation area for a preset distance; and

the drawstring comprises a fixed end and a free end, wherein the fixed end is connected to the second non-inflatable region, and the free end extends out of the airbag body and is fixed on the A column.

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