CN107199983B - Frontal passenger air bag mounted on ceiling - Google Patents
Frontal passenger air bag mounted on ceiling Download PDFInfo
- Publication number
- CN107199983B CN107199983B CN201710334519.7A CN201710334519A CN107199983B CN 107199983 B CN107199983 B CN 107199983B CN 201710334519 A CN201710334519 A CN 201710334519A CN 107199983 B CN107199983 B CN 107199983B
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- CN
- China
- Prior art keywords
- main body
- air bag
- guide channel
- airbag
- bag main
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/213—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle roof frames or pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R2021/23192—Roof bags, i.e. protecting the occupant in a roll-over situation
Abstract
The invention relates to the technical field of passive safety devices, in particular to a front passenger airbag arranged on a ceiling, which comprises a gas generator, a funnel-shaped airbag and a shell, wherein the funnel-shaped airbag comprises a gas guide channel, a tearing rotating mechanism, an airbag main body and an inner pull belt, the gas guide channel is communicated with the gas generator and the airbag main body, two ends of the inner pull belt are respectively arranged at the inner side of the gas guide channel and the lower part of the inner side of the airbag main body, and the tearing rotating mechanism is arranged between the outer side of the gas guide channel and the airbag main body. Compared with the prior art, the invention designs the front passenger airbag which is arranged on the ceiling, and when the front collision happens, the arrangement of the tearable structure and the inner drawstring ensures that the airbag main body can be in place rapidly when the airbag is unfolded. And the formed long and narrow groove gives the space for passengers to move forwards and downwards in collision, so that the human body is effectively protected, and neck stretching injury is avoided.
Description
Technical Field
The invention relates to the technical field of passive safety devices, in particular to a front passenger airbag arranged on a ceiling.
Background
The airbag provides effective collision protection for the occupant in the event of a collision of the vehicle. In a frontal collision of a vehicle, a conventional frontal restraint system includes a seat belt and an airbag that cooperate to protect the torso, head, and neck of an occupant in the frontal collision. When a frontal collision occurs, the passenger moves forwards, the hip and the upper trunk of the passenger can be effectively restrained by the seat and the waist safety belt, and meanwhile, the safety belt force limiter and the air bag act together to allow the trunk of the passenger to rotate forwards around the hip under the action of lumbar vertebra, so that injuries to the trunk, the head and the neck are reduced. The airbag first supports the head and neck of the occupant, thereby mitigating torso, head and neck injuries.
Referring to fig. 1, the conventional passenger airbag is designed to be deployed against the occupant and supported by the reaction force of the instrument panel, so that the airbag is deformed to provide a large amount of movement space for the rotational movement of the occupant, thereby achieving the protection of the occupant.
Along with the increase of the demand of people for the space in the vehicle and the demand of the diversity of interior decoration design, the passenger side air bags are increasingly required to be moved to other places from the instrument board, thereby saving the space of the instrument board and improving the design aesthetic feeling of the interior decoration. Referring to fig. 2, a typical roof occupant airbag device is secured between the roof and roof rail, an airbag disclosed in patent publication 1191952, which is inflated from the front of the occupant to form a "curtain" in the roof upon occurrence of a collision, and forces the occupant's head rearward as the occupant moves forward. The problem with this airbag arrangement is that the "curtain" limits the forward movement of the occupant and thus the rearward rotation of the occupant's head, which defect results in high head acceleration injuries and neck stretch injuries caused by ceiling occupant airbags. This design does not mitigate occupant injury but may result in increased injury.
Therefore, there is a need to design a roof-mounted frontal passenger airbag that can give a large movement space to the passenger and provide adequate protection in the event of a frontal collision.
Disclosure of Invention
The object of the present invention is to overcome the disadvantages of the prior art and to provide a roof-mounted frontal passenger airbag which gives the passenger a large movement space and provides adequate protection in the event of a frontal collision.
In order to achieve the above object, the present invention is a front passenger airbag mounted on a ceiling, comprising a gas generator, a funnel-shaped airbag, and a housing, the gas generator and the funnel-shaped airbag being assembled in the housing, the housing being assembled between the ceiling and a roof rail, characterized in that: the funnel-shaped air bag comprises an air guide channel, a tearing rotating mechanism, an air bag main body and an inner pull belt, wherein the air guide channel is communicated with the air generator and the air bag main body, two ends of the inner pull belt are respectively arranged at the inner side of the air guide channel and the inner lower side of the air bag main body, and the tearing rotating mechanism is arranged between the outer side of the air guide channel and the air bag main body.
The tearing rotating mechanism comprises a tearable structure, an elongated groove and a rotating point, wherein the outer side of the air guide channel is connected with the air bag main body through the tearable structure to form the elongated groove, the rotating point is arranged at the end part of the elongated groove, which is close to the funnel-shaped air bag, and when an automobile collides, the tearable structure fixes the initial position of the air bag main body, and after the head of an occupant presses the air bag main body, the tearable structure breaks, and the air bag main body moves forwards and downwards along the elongated groove along the rotating point.
The tearing structure is an outer drawstring, the outer drawstring comprises an upper sheet, a lower sheet and a cutting opening, the upper sheet is fixed with the air guide channel, the lower sheet is fixed with the air bag main body, the upper sheet and the lower sheet are made of one piece of fabric, and the cutting opening is arranged at the joint of the upper sheet and the lower sheet.
The tearable structure is a suture, and the outer side of the air guide channel and the air bag main body are sewn by the suture.
The sun shield passes through the ceiling and is fixed on the shell or the car body bracket.
Compared with the prior art, the invention designs the front passenger airbag which is arranged on the ceiling, and when the front collision happens, the arrangement of the tearable structure and the inner drawstring ensures that the airbag main body can be in place rapidly when the airbag is unfolded. And, the formed elongated groove gives the occupant room to move forward and downward in the collision. After the head of the passenger contacts with the air bag main body, the tearable structure is broken, the air bag main body moves forwards and downwards along the long and narrow groove along the rotating point, and the air bag main body supports the upper trunk of the passenger to absorb the impact energy of the passenger, so that the effective protection of the human body is realized, and the neck stretching injury is avoided.
Drawings
Fig. 1 is a schematic view showing the operation of a conventional passenger airbag.
Fig. 2 is a schematic illustration of an exemplary ceiling-based airbag operation.
Fig. 3 is a schematic diagram of a first embodiment of the present invention.
Fig. 4 is a first working schematic diagram of the first embodiment of the present invention.
Fig. 5 is a second working schematic diagram of the first embodiment of the present invention.
Fig. 6 is a third working diagram of the first embodiment of the present invention.
Fig. 7 is a schematic diagram illustrating the operation of the first embodiment of the present invention.
Fig. 8 is a schematic diagram of an air guide channel according to a first embodiment of the present invention.
Fig. 9 is a schematic view of an outer drawstring according to a first embodiment of the present invention.
Fig. 10 is a schematic diagram showing an external drawstring operation breaking according to the first embodiment of the present invention.
Fig. 11 is a schematic diagram of a suture structure according to a second embodiment of the present invention.
FIG. 12 is a schematic illustration of a suture working break according to a second embodiment of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Example 1
Referring to fig. 3, the present invention is a ceiling-mounted front passenger airbag comprising a gas generator 1, a funnel-shaped airbag 2 and a housing 3, the gas generator 1 and the funnel-shaped airbag 2 are assembled in the housing 3, the housing 3 is assembled between a ceiling 21 and a roof rail, and a sun visor is fixed to the housing 3 or a vehicle body bracket through the ceiling 21. The funnel-shaped air bag 2 comprises an air guide channel 4, a tearing rotating mechanism, an air bag main body 7 and an inner pull belt 6, wherein the air guide channel 4 is communicated with the gas generator 1 and the air bag main body 7. Both ends of the inner draw strap 6 are respectively arranged at the inner side of the air guide channel 4 and the inner lower side of the air bag main body 7, and a tearing rotation mechanism is arranged between the outer side of the air guide channel 4 and the air bag main body 7.
Referring to fig. 8, the gas guide channel 4 is connected with the gas generator 1, and the gas outlet of the gas generator 1 is positioned in the gas guide channel 4 and is assembled in the shell 3 together. The air guide channel 4 is sewn by fabric with certain strength and heat insulation function, the width is 250mm, and the specific size is widened or reduced according to the air flow speed requirement. Because the air guide channel 4 is slender in size, the air guide channel can not be excessively expanded during unfolding, and impact on surrounding environment components such as sunshades, ceilings and the like is reduced. The airbag deploys from the roof along the front windshield and is located between the passenger and the windshield. The gas generated by the gas generator 1 is transferred into the airbag main body 7 through the gas guide passage 4, and the airbag main body 7 is inflated in front of the occupant and filled up from below. The air guide channel 5 does not generate restraint or absorb energy to the passengers, only provides the function of air guide, and transmits the air generated by the air generator 1 into the air bag main body 7, thereby realizing the maximum protection of the air bag to the passengers 9.
During inflation of the airbag, the airbag body 7 rapidly expands downwardly due to the impact of the gas, and the inner tether 6 is designed to limit the downward expansion tendency during deployment of the airbag. The inner draw strap 6 is formed by cutting fabric with certain strength, the width is 50-200 mm, the length is 300-500 mm, and the specific size is adjusted according to the space in the vehicle and the design position of the passenger. The polyhedral air bag filled by the gas generator 1 fills the space between the co-driver and the windshield, and the inner tie 6 maintains the stability of the funnel-shaped air bag 2, avoiding the influence of other vehicle body structural members except the windshield on the stability thereof. During the filling of the funnel-shaped airbag 2, the inner drawstring 6 limits the amplitude of the downward movement during airbag deployment, avoiding excessive downward extension. When the air bag is unfolded, the inner pull belt 6 is matched with the tearing rotating mechanism to realize air guide of the air bag, so that the air bag main body 7 is guaranteed to be positioned at the head of an occupant quickly, the air bag is filled with air from bottom to top quickly, certain rigidity of the inflated air bag is guaranteed, and the contact and reaction force of the funnel-shaped air bag 2 and the instrument panel 10 are reduced to the minimum. The stretching effect of the inner tension strap 6 ensures that the air bag does not move laterally and vertically during a crash, and that no additional support from the instrument panel 10 is required, enabling self-support. In addition, the inner tether 6 limits the volume of the airbag.
Referring to fig. 4-7, the tearing rotation mechanism comprises a tearing structure, an elongated slot 8 and a rotation point p, wherein the outer side of the air guide channel 4 is connected with the air bag main body 7 by adopting the tearing structure and forms the elongated slot 8, the end part of the elongated slot 8, which is close to the funnel-shaped air bag 2, is provided with the rotation point, and when an automobile collides, the initial position of the air bag main body 7 is fixed by the tearing structure, so that unstable movement in the unfolding and collision processes is reduced, and the air bag is accurately and timely positioned in early collision, so that the head of an occupant is effectively and correctly contacted with the air bag main body 7. And simultaneously, the stability of the air bag in the collision process is ensured. The formed elongated slot 8 gives the occupant room to move forward and downward in a collision. As the degree of movement of the occupant increases, when the head of the occupant presses the airbag body 7, the tearable structure breaks, and the airbag body 7 moves forward and downward along the slit 8 along the rotation point p, which allows the occupant 9 to move forward along with the airbag body 7, but at the same time ensures that the airbag body 7 remains mounted on the ceiling after being subjected to an external force. Meanwhile, the upper trunk of the passenger is supported by the air bag main body 7 to absorb the impact energy of the passenger, the passenger can slide forwards and downwards along with the elongated slot 8 based on the certain support of the chest and the neck of the passenger by the air bag main body 7, so that the injury of higher chest acceleration and neck bending moment is avoided, the effective protection of a human body is realized, and the problem of overlarge neck stretching injury caused by a ceiling curtain type air bag is also avoided.
Referring to fig. 9-10, in this example, the tearable structure is an outer drawstring 5, and the outer drawstring 5 includes an upper sheet 52, a lower sheet 53 and a cut 51, where the upper sheet 52 and the air guide channel 4 are fixed at an outer point a, and the lower sheet 53 and the air bag body 7 are fixed at a point b, so as to ensure that the air bag body 7 is quickly in place when the air bag is unfolded. The upper sheet 52 and the lower sheet 53 are composed of a piece of fabric with certain strength, a certain length and a certain number of cutting slits 51 are arranged at the joint of the upper sheet 52 and the lower sheet 53, and the number and the length of the cutting slits 51 are adjusted according to the collision speed and energy.
Example two
Referring to fig. 11-12, in this example, the tearable structure is a suture 54, and the suture 54 has a certain strength, and the strength can be adjusted according to the experimental result. The outer side of the air guide channel 4 is sewn with the air bag main body 7 by adopting the stitching 54, the stitching 54 connects the air guide channel 4 at the upper end of the air bag with the air bag main body 7 at the lower end of the air bag, the air bag can be ensured to be in place rapidly in the initial point of ignition, the stitching 54 keeps stretching, and the unstable movement in the unfolding and collision processes can be reduced, so that the contact of passengers on the air bag main body 7 is ensured, and meanwhile, the stability of the air bag in the collision process is also ensured. After the airbag is deployed in place, the stitches 54 perform their function and break due to the load when the occupant contacts the airbag.
The combination of design features based on the present invention ensures that the airbag is able to effectively absorb crash energy in the event of a crash without the need for the reaction forces generated by the instrument panel 10 to be supported during a conventional crash.
Claims (4)
1. The utility model provides a install positive passenger gasbag on ceiling, includes gas generator (1), infundibulate air pocket (2) and casing (3), and gas generator (1) and infundibulate air pocket (2) assemble in casing (3), and casing (3) assemble between ceiling (21) and roof beam, its characterized in that: the funnel-shaped air bag (2) comprises an air guide channel (4), a tearing rotating mechanism, an air bag main body (7) and an inner pull belt (6), wherein the air guide channel (4) is communicated with the air generator (1) and the air bag main body (7), two ends of the inner pull belt (6) are respectively arranged at the inner side of the air guide channel (4) and the lower side of the inner side of the air bag main body (7), the tearing rotating mechanism is arranged between the outer side of the air guide channel (4) and the air bag main body (7), the tearing rotating mechanism comprises a tearing structure, an narrow groove (8) and a rotating point, the outer side of the air guide channel (4) is connected with the air bag main body (7) through the tearing structure to form the narrow groove (8), the rotating point is arranged at the end part of the narrow groove (8) close to the funnel-shaped air bag (2), the tearing structure is fixed at the initial position of the air bag main body (7), after the air bag main body (7) is pressed by the head of an occupant, the tearing structure breaks, and the air bag main body (7) moves forwards and downwards along the rotating point.
2. A roof-mounted front passenger airbag as set forth in claim 1, wherein: the tearing structure is an outer drawstring (5), the outer drawstring (5) comprises an upper piece (52), a lower piece (53) and a cutting opening (51), the upper piece (52) is fixed with the air guide channel (4), the lower piece (53) is fixed with the air bag main body (7), the upper piece (52) and the lower piece (53) are made of one piece of fabric, and the cutting opening (51) is arranged at the joint of the upper piece (52) and the lower piece (53).
3. A roof-mounted front passenger airbag as set forth in claim 1, wherein: the tearable structure is a suture (54), and the outer side of the air guide channel (4) and the air bag main body (7) are sewn by the suture (54).
4. A roof-mounted front passenger airbag as set forth in claim 1, wherein: the sun visor is fixed on the shell (3) or the vehicle body bracket through a ceiling (21).
Priority Applications (1)
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CN201710334519.7A CN107199983B (en) | 2017-05-12 | 2017-05-12 | Frontal passenger air bag mounted on ceiling |
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CN201710334519.7A CN107199983B (en) | 2017-05-12 | 2017-05-12 | Frontal passenger air bag mounted on ceiling |
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CN107199983A CN107199983A (en) | 2017-09-26 |
CN107199983B true CN107199983B (en) | 2023-06-27 |
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CN201710334519.7A Active CN107199983B (en) | 2017-05-12 | 2017-05-12 | Frontal passenger air bag mounted on ceiling |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109941221B (en) * | 2017-12-15 | 2023-01-13 | 蔚来(安徽)控股有限公司 | Air bag, air bag system and car |
WO2019114658A1 (en) * | 2017-12-15 | 2019-06-20 | 蔚来汽车有限公司 | Airbag, airbag system, and automobile |
CN112572338A (en) * | 2019-09-27 | 2021-03-30 | 奥托立夫开发公司 | Housing for an overhead airbag module and overhead airbag module |
CN218616561U (en) * | 2022-09-30 | 2023-03-14 | 奥托立夫开发公司 | Air bag and vehicle |
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Effective date of registration: 20191220 Address after: 200120 Building 8, No. 88, Shengrong Road, Pudong New Area, Shanghai Applicant after: Shanghai Lingang Junsheng automobile safety system Co.,Ltd. Applicant after: YANFENG AUTOMOBILE INTELLIGENT SAFETY SYSTEM Co.,Ltd. Address before: 201315 No. 426 Pu Pu Road, Cambridge Industrial Zone, Shanghai, Pudong New Area Applicant before: YANFENG KSS (SHANGHAI) AUTOMOTIVE SAFETY SYSTEMS Co.,Ltd. |
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