CN209757037U - Overhead safety airbag - Google Patents
Overhead safety airbag Download PDFInfo
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- CN209757037U CN209757037U CN201920315462.0U CN201920315462U CN209757037U CN 209757037 U CN209757037 U CN 209757037U CN 201920315462 U CN201920315462 U CN 201920315462U CN 209757037 U CN209757037 U CN 209757037U
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- air bag
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- air pocket
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Abstract
The utility model belongs to the technical field of the passive safety device technique and specifically relates to a overhead type air bag, including air pocket, gas generator, casing, the well middle and upper position of air pocket is equipped with separable part, and separable part cuts apart into air pocket epicoele and air pocket cavity down with the air pocket, and separable part's both sides are equipped with air guide portion, adopt air guide portion UNICOM between air pocket epicoele and the air pocket cavity down. Compared with the prior art, the utility model, designed overhead type gasbag structure, set up separable part at the well upper position of air pocket, when the driver moves and extrudes the air pocket to the air pocket that is full of gas, the air pocket that is close to driver's head changes in by the compression to reduce the risk that driver's neck excessively backward bends and cause the neck injury, and the air pocket adopts simple cut-parts and sewing design, simple structure, with low costs, easily popularization.
Description
Technical Field
The utility model belongs to the technical field of passive safety device technique and specifically relates to an overhead air bag.
Background
When the automobile has a collision accident, the safety air bag can provide effective buffer protection for a driver and passengers in the automobile. DE19860827B4 discloses an airbag which is arranged in the roof of a vehicle and which, in the event of a crash, falls from the roof interior in front of the driver, forming a cushion between the driver and the steering wheel.
The conventional driver airbag is disposed in the steering wheel and adversely affects the design of the steering wheel, which is eliminated by the patent design of publication DE19860827B 4. However, the design scheme has unsolved problems in technical details, and there are three main points: 1. the tension on the cloth piece of the airbag close to one side of the driver is large, when the driver moves towards the full airbag and extrudes the airbag, the airbag close to the chest of the driver is easy to compress, and the airbag close to the head is difficult to compress, so that the neck of the driver is excessively bent backwards, and the injury risk exists. 2. The gas generated by the gas generator can not be quickly introduced into the main body air cavity, so that overlarge impact force exists on the part, close to the gas generator, of the upper part of the air bag, and the risk of air bag breakage is potential. 3. The air bag has complex structure and high cost.
Therefore, there is a need for an overhead air bag that provides a balanced cushioning protection for the driver's chest and head in a frontal collision, and that is simple in structure, low in cost, and highly generalizable.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art, provide a overhead type air bag, provide balanced buffer protection for driver's chest and head when the head-on collision, and its simple structure, with low costs, can promote the nature height.
In order to achieve the above object, the utility model relates to a top-mounted air bag, including air pocket, gas generator, casing, gas generator and air pocket are installed in the casing, and the casing is installed on the ceiling in the car, its characterized in that: the separable part is arranged at the middle-upper part of the air bag and divides the air bag into an upper air bag cavity and a lower air bag cavity, air guide parts are arranged on two sides of the separable part, and the upper air bag cavity is communicated with the lower air bag cavity through the air guide parts.
The separable part is located at the central part of the left and right directions of the air bag and is located at 70% of the whole height of the air bag.
The separable part consists of a tearing line and a sewing line, the tearing line is respectively arranged at the middle-upper parts of the front main sheet and the rear main sheet of the air bag, the sewing line surrounds the tearing line, the middle-upper parts of the front main sheet and the rear main sheet are sewn by the sewing line, and the peripheral edges of the front main sheet and the rear main sheet are sewn by the other sewing line.
The separable part consists of a cutting line, a tearing line and a sewing line, the cutting line is arranged at the middle upper part of the front main sheet of the air bag, the tearing line is arranged at the middle upper part of the rear main sheet of the air bag, the cutting line and the tearing line have the same shape and correspond to each other in position, the sewing line surrounds the cutting line and the tearing line, the middle upper parts of the front main sheet and the rear main sheet are sewn through the sewing line, and the peripheral edges of the front main sheet and the rear main sheet are sewn through another sewing line.
The separable part consists of a cutting line, a tearing line and a sewing line, the tearing line is arranged at the middle upper part of the front main sheet of the air bag, the cutting line is arranged at the middle upper part of the rear main sheet of the air bag, the cutting line and the tearing line have the same shape and correspond to each other in position, the sewing line surrounds the cutting line and the tearing line, the middle upper parts of the front main sheet and the rear main sheet are sewn through the sewing line, and the peripheral edges of the front main sheet and the rear main sheet are sewn through another sewing line.
The two sides of the separable part extend downwards, and the separable part is of a forward arched or arc-shaped structure with low two sides and high middle.
The air guide part is arranged between two side edges of the separable part and the edge of the air bag.
The air bag upper cavity is positioned above the separable part and the air guide part, and the air bag lower cavity is positioned below the separable part and the air guide part.
Compared with the prior art, the utility model, designed overhead type gasbag structure, set up separable part at the well upper position of air pocket, when the driver moves and extrudes the air pocket to the air pocket that is full of gas, the air pocket that is close to driver's head changes in by the compression to reduce the risk that driver's neck excessively backward bends and cause the neck injury, and the air pocket adopts simple cut-parts and sewing design, simple structure, with low costs, easily popularization.
Drawings
Fig. 1 is a schematic sectional view of the air bag of the present invention filled with gas.
Fig. 2 is a schematic sectional view of the airbag being hit by a driver.
Fig. 3 is a schematic front view of the airbag of the present invention when it is not inflated.
Fig. 4 is a schematic sectional view of the airbag of the present invention when it is not inflated.
Fig. 5 is a front view of the present invention when the driver hits the air bag.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Example 1
Referring to fig. 1, the roof-mounted airbag in this example includes an airbag 1, a housing 2, and a gas generator 3. The gas generator 3 is installed at one end of the inside of the gas bag 1, the gas generator 3 and the gas bag 1 are installed in the housing 2, and the housing 2 is installed on the ceiling 4 of the vehicle. The separable portion 11 is provided at the middle-upper portion of the airbag 1. The separable part 11 divides the air bag 1 into an air bag upper chamber 12 and an air bag lower chamber 13, air guide parts 16 are arranged on two sides of the separable part 11, and the air bag upper chamber 12 is communicated with the air bag lower chamber 13 through the air guide parts 16. When the air bag 1 is normally inflated, the separable part 11 keeps an initial complete state, the whole bag shape of the air bag 1 keeps complete, and the air bag is equivalent to the conventional overhead air bag, and the inflating and unfolding action of the air bag 1 is not influenced.
Referring to fig. 2, when the driver 6 moves toward the gas-filled airbag 1 and presses the airbag 1, the rear surface of the airbag 1 is supported on the steering wheel 5, and the front surface of the airbag 1 is pressed by the chest and head of the driver 6. Under pressure, the separable portion 11 is broken and the lower bag chamber 13 is separated from the upper bag chamber 12 along the separable portion 11, but both the upper bag chamber 12 and the lower bag chamber 13 are kept closed. The internal pressure of the bag 1 is not affected by the disconnection of the detachable portion 11, and the internal pressure of the bag 1 is not changed. At this time, the airbag lower chamber 13 collapses in the direction of the steering wheel 5 with the movement of the head of the driver 6, so that an excessive rearward force on the head of the driver 6 is avoided, that is, the neck of the driver 6 is not bent rearward excessively, and the risk of injury is reduced.
Referring to fig. 3, 4 and 5, the air bag 1 is composed of a front main panel 14 and a rear main panel 15, the front main panel 14 and the rear main panel 15 having the same shape and size. The separable portion 11 is composed of a tear line 111 and a sewing line 112, and the separable portion 11 is not inflated in any case. The tear lines 111 are provided at the middle upper portions, i.e., about 70% of the height, of the front and rear main panels 14 and 15, respectively, of the airbag 1. The sewing thread 112 is wound around the tear line 111, the upper middle portions of the front and rear main panels 14 and 15 are sewn together with the sewing thread 112, and the peripheral edges of the front and rear main panels 14 and 15 are sewn together with another sewing thread 113 to form a closed air bag 1. The two sides of the separable part 11 extend downwards, and the separable part 11 is in a forward arched or arc-shaped structure with low two sides and high middle. The left and right sides of the detachable portion 11 are spaced apart from the edge of the airbag 1 to form an air guide portion 16. The air guide portions 16 are provided between both side edges of the separable portion 11 and the edge of the airbag 1. The airbag upper chamber 12 is located above the separable part 11 and the air guide part 16, the airbag lower chamber 13 is located below the separable part 11 and the air guide part 16, and the airbag upper chamber 12 and the airbag lower chamber 13 are always communicated through the air guide part 16.
When the airbag 1 is inflated and deployed from the housing 2, the tear lines 111 on the front and rear main panels 14 and 15 remain intact, that is, the detachable portions 11 remain intact. When the driver 6 moves toward the gas-filled bag 1 and presses the bag 1, both the front main panel 14 and the rear main panel 15 are broken along the tear line 111 under pressure, i.e., the detachable portion 11 is broken. At this time, the airbag upper chamber 12 and the airbag lower chamber 13 are kept in a closed state by the existence of the sewing thread 112, and are communicated with each other through the air guide portion 16.
The separable portion 11 is located at a central portion in the left-right direction of the airbag 1 and at 70% of the entire height of the airbag 1, and both objects can be achieved at the same time. First, the bag lower chamber 13 has a sufficient size in the up-down direction to completely cover the area of the steering wheel 5 and also completely cover the head of the driver 6. The lower airbag cavity 13 provides sufficient support and cushioning for the head of the driver even after the detachable portion 11 is broken, thereby avoiding the risk of causing the neck of the driver 6 to bend forward too much. Secondly, the size of the upper chamber 12 is moderate, so that when the gas generator 3 rapidly inflates the airbag 1, the impact force of the gas flow on the seam 112 is not too large, thereby avoiding the situation that the seam 112 cracks to cause the airbag 1 to deflate.
The two sides of the separable part 11 extend downwards, and the separable part 11 is in a positive arched or arc-shaped structure with low two sides and high middle and has two functions. First, when the gas generator 3 inflates the airbag 1 quickly, the separable portion 11 has a small resistance to the gas flow, and the gas flow can be branched off quickly to both sides and reach the airbag lower chamber 13 through the gas guide portion 16. Secondly, the circular arc shape can ensure that all parts of the suture line 112 are stressed more evenly, and the suture line 112 is prevented from being damaged due to overlarge local stress.
Example 2
In this example, only the differences from embodiment 1 are described, and the same portions as embodiment 1 will not be described again.
In the present embodiment, the separable portion 11 is composed of a cut line, a tear line 111, and a sewing line 112. The tear line 111 is provided in the front main panel 14 of the airbag 1 at an upper portion, i.e., at a portion of about 70% of the height. The cut line is provided at the middle upper portion, i.e., about 70% of the height, of the rear main panel 15 of the air bag 1. The cut line is completely broken, the cut line and the tear line 111 have the same shape and correspond to each other in position, the sewing thread 112 is wound around the cut line and the tear line 111, and the middle upper portions of the front main panel 14 and the rear main panel 15 are sewn together by the sewing thread 112.
In this embodiment, the function of the separable part 11 is the same as that in embodiment 1, and the operation principle is similar. The present embodiment is characterized in that the setting of the cutting line can further reduce the strength of the separable part 11, so that the technical solution of the present invention is also applicable to the application where the risk of injury to the neck of the driver is particularly sensitive.
In this embodiment the tear line 111 is provided on the front main panel 14 and the cut line is provided on the rear main panel 15. It is also possible to provide the tear line 111 at the middle upper portion of the rear main panel 15 and the cut line at the middle upper portion of the front main panel 14, in accordance with the principle and action of the present embodiment.
Example 3
In this example, only the differences from embodiment 1 are described, and the same portions as embodiment 1 will not be described again.
In the present embodiment, the sewing line 112 between the front main panel 14 and the rear main panel 15, the other sewing line 113 are formed by interlacing weaving, or are formed by bonding with an adhesive.
Claims (8)
1. The utility model provides a top-mounted air bag, includes air pocket, gas generator, casing, and gas generator (3) and air pocket (1) are installed in casing (2), and casing (2) are installed on roof (4) in the car, its characterized in that: the upper middle part of the air bag (1) is provided with a separable part (11), the separable part (11) divides the air bag (1) into an air bag upper cavity (12) and an air bag lower cavity (13), air guide parts (16) are arranged on two sides of the separable part (11), and the air bag upper cavity (12) is communicated with the air bag lower cavity (13) through the air guide parts (16).
2. The overhead air bag of claim 1, wherein: the separable part (11) is positioned at the central part of the left and right directions of the air bag (1) and is positioned at 70% of the whole height of the air bag (1).
3. The overhead air bag of claim 1, wherein: the separable part (11) consists of a tearing line (111) and a sewing line (112), the tearing line (111) is respectively arranged at the middle upper parts of the front main sheet (14) and the rear main sheet (15) of the air bag (1), the sewing line (112) surrounds the tearing line (111), the middle upper parts of the front main sheet (14) and the rear main sheet (15) are sewed by the sewing line (112), and the peripheral edges of the front main sheet (14) and the rear main sheet (15) are sewed by another sewing line (113).
4. The overhead air bag of claim 1, wherein: the separable part (11) consists of a cutting line, a tearing line (111) and a sewing line (112), the cutting line is arranged at the middle upper part of the front main sheet (14) of the air bag (1), the tearing line (111) is arranged at the middle upper part of the rear main sheet (15) of the air bag (1), the cutting line and the tearing line (111) have the same shape and correspond to each other in position, the sewing line (112) surrounds the cutting line and the tearing line (111), the middle upper parts of the front main sheet (14) and the rear main sheet (15) are sewn by the sewing line (112), and the peripheral edges of the front main sheet (14) and the rear main sheet (15) are sewn by another sewing line (113).
5. The overhead air bag of claim 1, wherein: the separable part (11) consists of a cutting line, a tearing line (111) and a sewing line (112), wherein the tearing line (111) is arranged at the middle upper part of the front main sheet (14) of the air bag (1), the cutting line is arranged at the middle upper part of the rear main sheet (15) of the air bag (1), the cutting line and the tearing line (111) have the same shape and correspond to each other in position, the sewing line (112) surrounds the cutting line and the tearing line (111), the middle upper parts of the front main sheet (14) and the rear main sheet (15) are sewn by the sewing line (112), and the peripheral edges of the front main sheet (14) and the rear main sheet (15) are sewn by another sewing line (113).
6. The overhead air bag of claim 1, wherein: the two sides of the separable part (11) extend downwards, and the separable part (11) is of a forward arched or circular arc structure with low two sides and high middle.
7. The overhead air bag of claim 1, wherein: the air guide part (16) is arranged between two sides of the separable part (11) and the edge of the air bag (1).
8. The overhead air bag of claim 1, wherein: the air bag upper cavity (12) is positioned above the separable part (11) and the air guide part (16), and the air bag lower cavity (13) is positioned below the separable part (11) and the air guide part (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920315462.0U CN209757037U (en) | 2019-03-13 | 2019-03-13 | Overhead safety airbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920315462.0U CN209757037U (en) | 2019-03-13 | 2019-03-13 | Overhead safety airbag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209757037U true CN209757037U (en) | 2019-12-10 |
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ID=68754411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920315462.0U Active CN209757037U (en) | 2019-03-13 | 2019-03-13 | Overhead safety airbag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209757037U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060090A (en) * | 2019-12-31 | 2021-07-02 | 奥托立夫开发公司 | Car front seat overhead air bag and car |
-
2019
- 2019-03-13 CN CN201920315462.0U patent/CN209757037U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060090A (en) * | 2019-12-31 | 2021-07-02 | 奥托立夫开发公司 | Car front seat overhead air bag and car |
| CN113060090B (en) * | 2019-12-31 | 2023-11-28 | 奥托立夫开发公司 | Head safety airbag of front row seat of automobile and automobile |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191224 Address after: 201315 4th floor, building 11, No. 957, Kangqiao Road, Pudong New Area, Shanghai Co-patentee after: Shanghai Lingang Junsheng automobile safety system Co., Ltd Patentee after: Yanfeng Automobile Intelligent Safety System Co., Ltd. Address before: 201315 No. 426 Pu Pu Road, Cambridge Industrial Zone, Shanghai, Pudong New Area Patentee before: Yanfeng Bailide (Shanghai) Automobile Safety System Co., Ltd. |