US20160288761A1 - Vehicle impact absorbing system - Google Patents
Vehicle impact absorbing system Download PDFInfo
- Publication number
- US20160288761A1 US20160288761A1 US14/673,935 US201514673935A US2016288761A1 US 20160288761 A1 US20160288761 A1 US 20160288761A1 US 201514673935 A US201514673935 A US 201514673935A US 2016288761 A1 US2016288761 A1 US 2016288761A1
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- United States
- Prior art keywords
- airbag
- side curtain
- vehicle
- curtain airbag
- headliner
- Prior art date
- 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.)
- Granted
Links
- 238000004891 communication Methods 0.000 claims description 10
- 206010019196 Head injury Diseases 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 229920002302 Nylon 6,6 Polymers 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 208000029028 brain injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- -1 e.g. Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
-
- 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
- B60R21/214—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in roof panels
-
- 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
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
-
- 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
-
- 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
- B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
-
- 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
- B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
-
- 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
- B60R2021/23107—Inflatable members characterised by their shape, construction or spatial configuration the bag being integrated in a multi-bag system
-
- 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
- B60R21/235—Inflatable members characterised by their material
- B60R2021/23504—Inflatable members characterised by their material characterised by material
Definitions
- An interior of a vehicle typically includes various safety devices for absorbing energy from an occupant of the vehicle during an impact of the vehicle.
- the vehicle may include an airbag affixed in a steering wheel or an instrument panel.
- the airbag may be configured to absorb energy and soften impact between the body of the occupant and the steering wheel or the instrument panel.
- Automobiles are subject to a variety of crash tests, including standard tests regulated by the National Highway Traffic Safety Administration (NHTSA). For example, these tests may be directed toward oblique impacts, i.e., impacts that occur at an angle of 10-50 degrees relative to a vehicle's trajectory. During the oblique impact, the occupant may move forward and laterally, and a seat belt may impart a load onto a chest of the occupant.
- oblique impacts i.e., impacts that occur at an angle of 10-50 degrees relative to a vehicle's trajectory.
- oblique impacts i.e., impacts that occur at an angle of 10-50 degrees relative to a vehicle's trajectory.
- the occupant may move forward and laterally, and a seat belt may impart a load onto a chest of the occupant.
- BrIC Brain Injury Criteria
- FIG. 1 is a plan view of a vehicle with a front airbag.
- FIG. 2 is a forward-facing view of the vehicle with the front airbag extending between a first side curtain airbag and a second side curtain airbag.
- FIG. 3 is a forward-facing view of the vehicle with the front airbag having an opening and a transparent panel covering the opening.
- FIG. 4 is a forward-facing view of the vehicle where the front airbag has inflatable protruded chambers.
- FIG. 5 is a forward-facing view of the vehicle where the front airbag has inflatable protruded chambers separately connected to the front airbag.
- FIG. 6 is a plan view of the vehicle with the front airbag extending between an instrument panel and the first and second side curtain airbags.
- FIG. 7 is a block diagram of an inflator and an impact sensing system.
- FIG. 8 is a forward-facing view of the vehicle including a first front airbag and a second front airbag.
- FIG. 9 is a side view of the vehicle where the front airbag has inflatable protruded chambers extending toward a windshield.
- a vehicle 10 includes an instrument panel 12 , a first side curtain airbag 14 , and a second side curtain airbag 16 , as shown in FIG. 1 .
- the vehicle 10 includes two front seats 18 disposed between the first side curtain airbag 14 and the second side curtain airbag 16 .
- a front airbag 20 extends from the first side curtain airbag 14 to the second side curtain airbag 16 between the instrument panel 12 and the front seats 18 .
- the vehicle 10 includes a roof 11 , and the front airbag 20 is supported by the roof 11 .
- the front airbag 20 may absorb energy from vehicle occupants during an impact event. Because the front airbag 20 extends from the first side curtain airbag 14 to the second side curtain airbag 16 , the front airbag 20 absorbs energy from vehicle occupants, e.g. a driver and a passenger, from a variety of impact scenarios, e.g., frontal impacts, side impacts, and oblique impacts.
- vehicle occupants e.g. a driver and a passenger
- impact scenarios e.g., frontal impacts, side impacts, and oblique impacts.
- occupant impact energy is absorbed from several directions.
- the momentum of the vehicle occupants may move the driver toward a vehicle pillar 40 , e.g., an A-pillar, and the passenger may move toward the center of the instrument panel 12 , as shown in FIG. 1 .
- the intersection of the first side curtain airbag 14 and the front airbag 20 absorbs the impact energy from the driver during the oblique impact.
- the driver may move toward the center of the instrument panel 12
- the front seat passenger may move toward a vehicle pillar 41 , e.g., an A-pillar.
- the vehicle 10 may include a headliner 28 .
- the headliner 28 is disposed above the front seats 18 .
- the headliner 28 may be of any suitable construction and may be formed of any suitable material, e.g., foam, thermoplastic, and/or other polymeric material.
- the front airbag 20 may extend from the headliner 28 .
- the first and second side curtain airbags 14 , 16 may extend from the side roof rails (not shown) and through the headliner 28 .
- the front airbag 20 may be supported by the roof 11 , as shown in FIG. 1 .
- the front airbag 20 may be mounted to a roof header.
- the front airbag 20 may be supported by the roof 11 in any suitable manner, e.g., fastened directly to the roof header, disposed between the roof 11 and the headliner 28 , etc.
- the vehicle 10 may include the vehicle pillars 40 and 41 .
- the vehicle pillar 40 may be disposed adjacent to the instrument panel 12 and may extend toward the headliner 28 .
- the vehicle 10 may include a front airbag module including the front airbag 20 and an inflator 42 .
- the inflator 42 may be in communication with the front airbag 20 to inflate the front airbag 20 from an uninflated position to an inflated position during the impact event.
- the front airbag 20 may be constructed of any suitable material, e.g. nylon 6,6.
- the inflator 42 may be disposed, for example, in the vehicle pillar 40 , 41 .
- the inflator 42 may be disposed in the headliner 28 , mounted to the roof 11 , e.g. the roof header, or disposed in any other suitable location.
- the inflator 42 may be fluidly connected to the front airbag 20 in any suitable way.
- the inflator 42 may be of any suitable type, e.g., a cold gas inflator.
- the front airbag 20 In the uninflated position, the front airbag 20 may be entirely disposed in the headliner 28 .
- the front airbag 20 may extend out of the headliner 28 in any suitable manner, e.g., through a frangibly connected panel, a frangible seam, etc.
- the front airbag 20 may include a bottom edge 22 , as shown in FIGS. 2-5 .
- the bottom edge 22 is defined as the portion of the front airbag 20 farthest from the headliner 28 in a vertical direction when the front airbag 20 is in the inflated position.
- the bottom edge 22 may extend blow the steering wheel to provide protection to the occupant chest area and control forward movement of the torso and hip.
- the deployed size and coverage area may be modified to allow customization of the energy absorbing characteristics of the front airbag 20 during the impact event.
- the vehicle 10 may include a first curtain module including the first side curtain airbag 14 and an inflator 56 and a second curtain module including the second side curtain airbag 16 and an inflator 58 .
- the first curtain module and the second curtain module may be supported by the roof 11 , e.g., by the roof header.
- the inflators 56 , 58 and/or the first and second side curtain airbags 14 , 16 may be mounted to the roof.
- the inflators 56 , 58 may be disposed in any suitable location, e.g., disposed in the vehicle pillar 40 , the headliner 28 , etc.
- the inflator 56 may be in communication with the first side curtain airbag 14 to inflate the first side curtain airbag 14 from an uninflated position to an inflated position.
- the inflator 58 may be in communication with the second side curtain airbag 16 to inflate the second side curtain airbag 16 from an uninflated position to an inflated position.
- the inflators 56 , 58 may be of any suitable type, e.g., a cold gas inflator.
- the first side curtain airbag 14 may extend along a driver side front door of the vehicle 10 in the inflated position and the second side curtain airbag 16 may extend along a passenger side front door of the vehicle 10 in the inflated position.
- the first and second side curtain airbags 14 , 16 are spaced from each other when in the inflated position.
- the first side curtain airbag 14 and the second side curtain airbag 16 may absorb energy from the vehicle occupants during the impact event.
- the first and second side curtain airbags 14 , 16 may be disposed to receive the lateral movement of the occupants in the inflated position. In the uninflated position, the first and second side curtain airbags 14 , 16 may be disposed in the headliner 28 .
- first side curtain airbag 14 and the second side curtain airbag 16 may extend out of the headliner 28 in any suitable manner, e.g., through a frangibly connected panel, a frangible seam, etc.
- the first and second side curtain airbags 14 , 16 may be constructed of any suitable material, e.g. nylon 6 , 6 .
- the front airbag 20 may contact the first side curtain airbag 14 and the second side curtain airbag 16 , as shown in FIGS. 1 and 6 .
- the front airbag 20 may extend from the first side curtain airbag 14 to the second side curtain airbag 16 .
- Contacting the first side curtain airbag 14 and the second side curtain airbag 16 allows the front airbag 20 and the first side curtain airbag 14 to receive occupants and absorb occupant impact energy from several directions.
- One embodiment of the front airbag 20 and the first and second side curtain airbags 14 , 16 is shown in FIG. 1
- another embodiment is shown in FIG. 6 . In the embodiment of FIG.
- the first side curtain airbag 14 is disposed between the front airbag 20 and a left door of the vehicle 10 and the second side curtain airbag 16 is disposed between the front airbag 20 and a right door of the vehicle 10 .
- an end 24 of the first side curtain airbag 14 and an end 26 of the second side curtain airbag 16 are disposed forward of the front airbag 20 .
- the front airbag 20 may extend between the end 24 of the first side curtain airbag 14 and the instrument panel 12 .
- the second side curtain airbag 16 may similarly have an end 26 proximal to the instrument panel 12 , as shown in FIG. 6 , and the front airbag 20 may extend between the end 26 of the second side curtain airbag 16 and the instrument panel 12 .
- the bottom edge 22 of the front airbag 20 may extend from the end 24 of the first side curtain airbag 14 to the end 26 of the second side curtain airbag 16 .
- the vehicle 10 may include a steering wheel 30 , as shown in FIGS. 1, 3, 5, and 6 .
- the front airbag 20 may extend between the steering wheel 30 and the front seats 18 to receive the driver during the impact event.
- the front seats 18 may each have a seat back 60
- the front airbag 20 may extend between the steering wheel 30 and the seat backs 60 , as shown in FIGS. 1 and 6 .
- the bottom edge 22 of the front airbag 20 may be disposed below the steering wheel 30 in a vertical direction relative to the headliner 28 , such that the steering wheel 30 may be entirely disposed between the instrument panel 12 and the front airbag 20 .
- the bottom edge 22 of the front airbag 20 may extend across the steering wheel 30 .
- the steering wheel 30 may retract along a steering column (not shown) and may be movable from a deployed position to a stowed position.
- the front airbag 20 may be disposed between the steering wheel 30 and the front seats 18 .
- the steering wheel 30 In the stowed position, the steering wheel 30 may be retracted along the steering column and moved beneath the instrument panel 12 .
- the steering wheel 30 may be moved to the stowed position in, e.g., an autonomous driving mode.
- the deployment and venting characteristics of the front airbag 20 may be varied based on the size of the occupants, seating position and crash mode. For example a larger occupant seated with the seat moved rearward may have a longer duration and late venting to keeping the pressure inside the bag relatively high compared to a small occupant seated close to the steering wheel may require a softer bag with faster deployment timing.
- the vehicle 10 may include a windshield 32 , as shown in FIGS. 1, 3, and 6 .
- the front airbag 20 may include a transparent panel 34 , as shown in FIG. 3 to allow the driver to view the windshield 32 through the transparent panel 34 .
- the front airbag 20 may define an opening 36 and the transparent panel 34 may cover the opening 36 .
- the opening 36 may be rectangular or any other shape and size.
- the transparent panel 34 may be constructed of any suitable material, e.g., transparent nylon 6 , 6 or other transparent polymeric material.
- the opening 36 and the transparent panel 34 may be disposed above the steering wheel 30 to allow the driver to see through the windshield 32 .
- the front airbag 20 may include additional transparent panels (not shown) covering an additional opening (not shown).
- the transparent panel 34 may be attached to the front airbag 20 in any suitable manner, e.g., stitching, adhesives, fusing, etc.
- the front airbag 20 may include at least one protruded chamber 38 .
- the protruded chamber 38 may be inflatable portions of the front airbag 20 extending toward the front seats 18 , as shown in FIG. 4 .
- the protruded chamber 62 may be separately connected to the rest of the front airbag 20 , as shown in FIG. 5 .
- the front airbag 20 may include a plurality of protruded chambers 38 , 62 disposed to absorb occupant impact energy from several directions. During the oblique impact event, the protruded chamber 38 adjacent to the first side curtain airbag 14 may receive the driver, while the protruded chamber 38 adjacent to the center of the instrument panel 12 may receive the passenger.
- front seat occupants (the driver and the front passenger) may move forward and laterally such that their heads may contact the front airbag 20 before significantly increasing the head rotational speeds.
- the front airbag 20 absorbs energy from the moving head while the protruded chambers 38 , 62 restrain rotation of the head. Furthermore, the front airbag 20 may assist in retaining an unbelted occupant in the vehicle 10 .
- the vehicle 10 may include decision-making electronics, algorithms and a mechanism (not shown) for selectively releasing the protruded chamber 38 .
- the mechanism may be a frangible tether (not shown).
- the frangible tether may be connected to the protruded chamber 38 such that when the oblique impact is detected, the tether breaks, allowing the protruded chamber 38 to extend toward the front seats 18 and receive the occupant.
- the tether may be connected to the protruded chamber 38 from inside the front airbag 20 , or may be connected along the outside surface of the front airbag 20 .
- the vehicle 10 may include an impact sensing system 54 .
- the impact sensing system 54 may include an impact sensor 44 and a controller 46 .
- the controller 46 is in communication with the inflator 42 and may include a processor 48 and a memory 50 .
- the memory 50 stores instructions executable by the processor 48 to control the inflator 42 .
- the controller 46 may be programmed to, upon identification of an impact, cause triggering of the inflator 42 , extending the front airbag 20 .
- the impact sensor 44 may be in communication with the controller 46 to communicate data to the controller 46 .
- the impact sensor 44 may be of any suitable type, e.g., using accelerometers, radar, lidar, and/or a vision system.
- the vision system may include one or more cameras, CCD image sensors, and/or CMOS image sensors, etc. Based on data communicated by the impact sensor 44 , the controller 46 may cause triggering the inflator 42 .
- Communications between the controller 46 , the impact sensor 44 , the inflator 42 , and/or other components in the vehicle 10 may be connected to a communication bus 52 , such as a controller area network (CAN) bus, of the vehicle 10 .
- the controller 46 may use information from the communication bus 52 to control the triggering of the inflator 42 .
- the inflator 42 may be connected to the controller 46 or may be connected to the communication bus 52 .
- the vehicle 10 may include a first front airbag 120 and a second front airbag 121 .
- the first front airbag 120 may extend from the headliner 28 adjacent the first side curtain airbag 14
- the second front airbag 121 may extend from the headliner 28 adjacent the second side curtain airbag 16 .
- the first and second front airbags 120 , 121 may be supported by the roof 11 shown in FIG. 1 .
- the inflator 42 may be fluidly connected to the first front airbag 120 to inflate the first front airbag 120 from an uninflated position to an inflated position
- a second inflator (not shown) may be fluidly connected to the second front airbag 121 to inflate the second front airbag 121 from an uninflated position to an inflated position.
- the first front airbag 120 may abut the second front airbag 121 near the center of the instrument panel 12 when the first and second front airbags 120 , 121 are in the inflated position.
- the vehicle 10 may include a first front seat 118 and a second front seat 119 .
- the first and second front seats 118 , 119 may be disposed between the first and second side curtain airbags 14 , 16 .
- the first front airbag 120 may be disposed between the steering wheel 30 and the first front seat 118
- the second front airbag 121 may be disposed between the instrument panel 12 and the second front seat 119 .
- the first front airbag 120 may have a bottom edge 122 that extends below the steering wheel 30 .
- the second front airbag 121 may have a bottom edge 123 . In an oblique impact, the second front airbag 121 may selectively deploy depending on several conditions, e.g., whether the second front seat 119 is occupied.
- the first and second front airbags 120 , 121 may include inflatable protruded chambers 138 , as shown in FIG. 8 .
- the protruded chambers 138 may be inflatable portions of the first and second front airbags 120 , 121 extending toward the first and second front seats 118 , 119 , or may be separately connected (not shown) to the rest of the first and second front airbags 120 , 121 .
- the protruded chambers 138 may receive occupants during, e.g., an oblique impact.
- the protruded chambers 138 may extend toward the windshield 32 .
- the windshield 32 may support the first and second front airbags 120 , 121 during the impact event. Specifically, the windshield 32 may act as a reaction surface to maintain the position of the first and second front airbags 120 , 121 relative to the windshield 32 during the impact event.
- FIG. 9 shows a second embodiment of a front airbag 220 .
- the front airbag 220 may include protruded chambers 238 extending toward the windshield 32 .
- the windshield 32 may support the front airbag 220 during the impact event. In other words, the windshield 32 may act as a reaction surface to maintain the position of the front airbag 220 relative to the windshield 32 during the impact event.
- the protruded chambers 238 may be inflatable portions of the front airbag 220 extending toward the windshield 32 or may be separately connected (not shown).
- the protruded chambers 238 may be disposed at select points along the front airbag 220 , or may extend the length of the front airbag 220 .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
- An interior of a vehicle, such as automobile, typically includes various safety devices for absorbing energy from an occupant of the vehicle during an impact of the vehicle. For example, the vehicle may include an airbag affixed in a steering wheel or an instrument panel. The airbag may be configured to absorb energy and soften impact between the body of the occupant and the steering wheel or the instrument panel.
- Automobiles are subject to a variety of crash tests, including standard tests regulated by the National Highway Traffic Safety Administration (NHTSA). For example, these tests may be directed toward oblique impacts, i.e., impacts that occur at an angle of 10-50 degrees relative to a vehicle's trajectory. During the oblique impact, the occupant may move forward and laterally, and a seat belt may impart a load onto a chest of the occupant.
- Several types of information are measured during the oblique crash test, including airbag performance, test dummy reaction, etc. One type of measurement is the Brain Injury Criteria (BrIC) values during the oblique impact. The BrIC values characterize occupant movement in particular angular velocities of the head. Occupants may move toward a vehicle pillar, e.g., an A-pillar, or toward the center of an instrument panel. There remains an opportunity to design an energy absorber to slow occupant movement in various frontal crashes, including oblique impacts, and reduce loading on the chest of the occupant from the seat belt.
-
FIG. 1 is a plan view of a vehicle with a front airbag. -
FIG. 2 is a forward-facing view of the vehicle with the front airbag extending between a first side curtain airbag and a second side curtain airbag. -
FIG. 3 is a forward-facing view of the vehicle with the front airbag having an opening and a transparent panel covering the opening. -
FIG. 4 is a forward-facing view of the vehicle where the front airbag has inflatable protruded chambers. -
FIG. 5 is a forward-facing view of the vehicle where the front airbag has inflatable protruded chambers separately connected to the front airbag. -
FIG. 6 is a plan view of the vehicle with the front airbag extending between an instrument panel and the first and second side curtain airbags. -
FIG. 7 is a block diagram of an inflator and an impact sensing system. -
FIG. 8 is a forward-facing view of the vehicle including a first front airbag and a second front airbag. -
FIG. 9 is a side view of the vehicle where the front airbag has inflatable protruded chambers extending toward a windshield. - With reference to the Figures, wherein like numerals indicate like parts throughout the several views, a
vehicle 10 includes aninstrument panel 12, a firstside curtain airbag 14, and a secondside curtain airbag 16, as shown inFIG. 1 . Thevehicle 10 includes twofront seats 18 disposed between the firstside curtain airbag 14 and the secondside curtain airbag 16. Afront airbag 20 extends from the firstside curtain airbag 14 to the secondside curtain airbag 16 between theinstrument panel 12 and thefront seats 18. Thevehicle 10 includes aroof 11, and thefront airbag 20 is supported by theroof 11. - With reference to
FIGS. 1 and 2 , thefront airbag 20 may absorb energy from vehicle occupants during an impact event. Because thefront airbag 20 extends from the firstside curtain airbag 14 to the secondside curtain airbag 16, thefront airbag 20 absorbs energy from vehicle occupants, e.g. a driver and a passenger, from a variety of impact scenarios, e.g., frontal impacts, side impacts, and oblique impacts. - By effectively enclosing the occupants between the
front airbag 20 and the first and secondside curtain airbags vehicle pillar 40, e.g., an A-pillar, and the passenger may move toward the center of theinstrument panel 12, as shown inFIG. 1 . The intersection of the firstside curtain airbag 14 and thefront airbag 20 absorbs the impact energy from the driver during the oblique impact. Furthermore, in an oblique impact the driver may move toward the center of theinstrument panel 12, and the front seat passenger may move toward avehicle pillar 41, e.g., an A-pillar. - During the oblique impact, a seat belt may impart a load onto a chest of one of the occupants. Because the
front airbag 20 extends between theinstrument panel 12 and thefront seats 18, thefront airbag 20 may urge the occupants to remain upright during the impact event, reducing loading on the chest of the occupant from the seat belt. As shown inFIGS. 2-5 , thevehicle 10 may include aheadliner 28. Theheadliner 28 is disposed above thefront seats 18. Theheadliner 28 may be of any suitable construction and may be formed of any suitable material, e.g., foam, thermoplastic, and/or other polymeric material. Thefront airbag 20 may extend from theheadliner 28. The first and secondside curtain airbags headliner 28. - The
front airbag 20 may be supported by theroof 11, as shown inFIG. 1 . Specifically, thefront airbag 20 may be mounted to a roof header. Thefront airbag 20 may be supported by theroof 11 in any suitable manner, e.g., fastened directly to the roof header, disposed between theroof 11 and theheadliner 28, etc. - The
vehicle 10 may include thevehicle pillars vehicle pillar 40 may be disposed adjacent to theinstrument panel 12 and may extend toward theheadliner 28. - The
vehicle 10 may include a front airbag module including thefront airbag 20 and aninflator 42. Theinflator 42 may be in communication with thefront airbag 20 to inflate thefront airbag 20 from an uninflated position to an inflated position during the impact event. Thefront airbag 20 may be constructed of any suitable material, e.g. nylon 6,6. - As shown in
FIGS. 1 and 6 , theinflator 42 may be disposed, for example, in thevehicle pillar inflator 42 may be disposed in theheadliner 28, mounted to theroof 11, e.g. the roof header, or disposed in any other suitable location. Theinflator 42 may be fluidly connected to thefront airbag 20 in any suitable way. Theinflator 42 may be of any suitable type, e.g., a cold gas inflator. In the uninflated position, thefront airbag 20 may be entirely disposed in theheadliner 28. During the impact event, thefront airbag 20 may extend out of theheadliner 28 in any suitable manner, e.g., through a frangibly connected panel, a frangible seam, etc. - The
front airbag 20 may include abottom edge 22, as shown inFIGS. 2-5 . Thebottom edge 22 is defined as the portion of thefront airbag 20 farthest from theheadliner 28 in a vertical direction when thefront airbag 20 is in the inflated position. Thebottom edge 22 may extend blow the steering wheel to provide protection to the occupant chest area and control forward movement of the torso and hip. Depending on the size, number of chambers, tethering pattern; inflation and venting characteristics of thefront airbag 20, the deployed size and coverage area may be modified to allow customization of the energy absorbing characteristics of thefront airbag 20 during the impact event. - The
vehicle 10 may include a first curtain module including the firstside curtain airbag 14 and aninflator 56 and a second curtain module including the secondside curtain airbag 16 and aninflator 58. The first curtain module and the second curtain module may be supported by theroof 11, e.g., by the roof header. For example, theinflators side curtain airbags inflators vehicle pillar 40, theheadliner 28, etc. - The
inflator 56 may be in communication with the firstside curtain airbag 14 to inflate the firstside curtain airbag 14 from an uninflated position to an inflated position. Theinflator 58 may be in communication with the secondside curtain airbag 16 to inflate the secondside curtain airbag 16 from an uninflated position to an inflated position. Theinflators - The first
side curtain airbag 14 may extend along a driver side front door of thevehicle 10 in the inflated position and the secondside curtain airbag 16 may extend along a passenger side front door of thevehicle 10 in the inflated position. The first and secondside curtain airbags side curtain airbag 14 and the secondside curtain airbag 16 may absorb energy from the vehicle occupants during the impact event. As shown inFIGS. 1, 2, and 6 , the first and secondside curtain airbags side curtain airbags headliner 28. During the impact event, the firstside curtain airbag 14 and the secondside curtain airbag 16 may extend out of theheadliner 28 in any suitable manner, e.g., through a frangibly connected panel, a frangible seam, etc. The first and secondside curtain airbags - As set forth above, the
front airbag 20 may contact the firstside curtain airbag 14 and the secondside curtain airbag 16, as shown inFIGS. 1 and 6 . Specifically, thefront airbag 20 may extend from the firstside curtain airbag 14 to the secondside curtain airbag 16. Contacting the firstside curtain airbag 14 and the secondside curtain airbag 16 allows thefront airbag 20 and the firstside curtain airbag 14 to receive occupants and absorb occupant impact energy from several directions. One embodiment of thefront airbag 20 and the first and secondside curtain airbags FIG. 1 , and another embodiment is shown inFIG. 6 . In the embodiment ofFIG. 1 , the firstside curtain airbag 14 is disposed between thefront airbag 20 and a left door of thevehicle 10 and the secondside curtain airbag 16 is disposed between thefront airbag 20 and a right door of thevehicle 10. In other words, anend 24 of the firstside curtain airbag 14 and anend 26 of the secondside curtain airbag 16 are disposed forward of thefront airbag 20. - In the embodiment of the
front airbag 20 and the first and secondside curtain airbags FIG. 6 , thefront airbag 20 may extend between theend 24 of the firstside curtain airbag 14 and theinstrument panel 12. The secondside curtain airbag 16 may similarly have anend 26 proximal to theinstrument panel 12, as shown inFIG. 6 , and thefront airbag 20 may extend between theend 26 of the secondside curtain airbag 16 and theinstrument panel 12. Thebottom edge 22 of thefront airbag 20 may extend from theend 24 of the firstside curtain airbag 14 to theend 26 of the secondside curtain airbag 16. - The
vehicle 10 may include asteering wheel 30, as shown inFIGS. 1, 3, 5, and 6 . Thefront airbag 20 may extend between thesteering wheel 30 and thefront seats 18 to receive the driver during the impact event. Specifically, thefront seats 18 may each have a seat back 60, and thefront airbag 20 may extend between thesteering wheel 30 and the seat backs 60, as shown inFIGS. 1 and 6 . As shown inFIGS. 2-4 , thebottom edge 22 of thefront airbag 20 may be disposed below thesteering wheel 30 in a vertical direction relative to theheadliner 28, such that thesteering wheel 30 may be entirely disposed between theinstrument panel 12 and thefront airbag 20. Alternatively, thebottom edge 22 of thefront airbag 20 may extend across thesteering wheel 30. - The
steering wheel 30 may retract along a steering column (not shown) and may be movable from a deployed position to a stowed position. In the deployed position, thefront airbag 20 may be disposed between thesteering wheel 30 and thefront seats 18. In the stowed position, thesteering wheel 30 may be retracted along the steering column and moved beneath theinstrument panel 12. Thesteering wheel 30 may be moved to the stowed position in, e.g., an autonomous driving mode. - The deployment and venting characteristics of the
front airbag 20 may be varied based on the size of the occupants, seating position and crash mode. For example a larger occupant seated with the seat moved rearward may have a longer duration and late venting to keeping the pressure inside the bag relatively high compared to a small occupant seated close to the steering wheel may require a softer bag with faster deployment timing. - The
vehicle 10 may include awindshield 32, as shown inFIGS. 1, 3, and 6 . Thefront airbag 20 may include atransparent panel 34, as shown inFIG. 3 to allow the driver to view thewindshield 32 through thetransparent panel 34. In other words, thefront airbag 20 may define anopening 36 and thetransparent panel 34 may cover theopening 36. Theopening 36 may be rectangular or any other shape and size. Thetransparent panel 34 may be constructed of any suitable material, e.g., transparent nylon 6,6 or other transparent polymeric material. Theopening 36 and thetransparent panel 34 may be disposed above thesteering wheel 30 to allow the driver to see through thewindshield 32. Thefront airbag 20 may include additional transparent panels (not shown) covering an additional opening (not shown). Thetransparent panel 34 may be attached to thefront airbag 20 in any suitable manner, e.g., stitching, adhesives, fusing, etc. - The
front airbag 20 may include at least one protrudedchamber 38. For example, the protrudedchamber 38 may be inflatable portions of thefront airbag 20 extending toward thefront seats 18, as shown inFIG. 4 . In another example, the protrudedchamber 62 may be separately connected to the rest of thefront airbag 20, as shown inFIG. 5 . As shown inFIGS. 4-5 , thefront airbag 20 may include a plurality of protrudedchambers chamber 38 adjacent to the firstside curtain airbag 14 may receive the driver, while the protrudedchamber 38 adjacent to the center of theinstrument panel 12 may receive the passenger. - During an oblique impact, front seat occupants (the driver and the front passenger) may move forward and laterally such that their heads may contact the
front airbag 20 before significantly increasing the head rotational speeds. Thefront airbag 20 absorbs energy from the moving head while the protrudedchambers front airbag 20 may assist in retaining an unbelted occupant in thevehicle 10. - The
vehicle 10 may include decision-making electronics, algorithms and a mechanism (not shown) for selectively releasing the protrudedchamber 38. For example, the mechanism may be a frangible tether (not shown). The frangible tether may be connected to the protrudedchamber 38 such that when the oblique impact is detected, the tether breaks, allowing the protrudedchamber 38 to extend toward thefront seats 18 and receive the occupant. The tether may be connected to the protrudedchamber 38 from inside thefront airbag 20, or may be connected along the outside surface of thefront airbag 20. With reference toFIG. 7 , thevehicle 10 may include animpact sensing system 54. Theimpact sensing system 54 may include animpact sensor 44 and acontroller 46. Thecontroller 46 is in communication with the inflator 42 and may include a processor 48 and amemory 50. Thememory 50 stores instructions executable by the processor 48 to control theinflator 42. Thecontroller 46 may be programmed to, upon identification of an impact, cause triggering of the inflator 42, extending thefront airbag 20. - The
impact sensor 44 may be in communication with thecontroller 46 to communicate data to thecontroller 46. Theimpact sensor 44 may be of any suitable type, e.g., using accelerometers, radar, lidar, and/or a vision system. The vision system may include one or more cameras, CCD image sensors, and/or CMOS image sensors, etc. Based on data communicated by theimpact sensor 44, thecontroller 46 may cause triggering theinflator 42. - Communications between the
controller 46, theimpact sensor 44, theinflator 42, and/or other components in thevehicle 10, may be connected to acommunication bus 52, such as a controller area network (CAN) bus, of thevehicle 10. Thecontroller 46 may use information from thecommunication bus 52 to control the triggering of theinflator 42. The inflator 42 may be connected to thecontroller 46 or may be connected to thecommunication bus 52. - In another example shown in
FIG. 8 , thevehicle 10 may include a firstfront airbag 120 and a secondfront airbag 121. The firstfront airbag 120 may extend from theheadliner 28 adjacent the firstside curtain airbag 14, and the secondfront airbag 121 may extend from theheadliner 28 adjacent the secondside curtain airbag 16. The first and secondfront airbags roof 11 shown inFIG. 1 . The inflator 42 may be fluidly connected to the firstfront airbag 120 to inflate the firstfront airbag 120 from an uninflated position to an inflated position, and a second inflator (not shown) may be fluidly connected to the secondfront airbag 121 to inflate the secondfront airbag 121 from an uninflated position to an inflated position. The firstfront airbag 120 may abut the secondfront airbag 121 near the center of theinstrument panel 12 when the first and secondfront airbags - The
vehicle 10 may include a firstfront seat 118 and a secondfront seat 119. The first and secondfront seats side curtain airbags front airbag 120 may be disposed between thesteering wheel 30 and the firstfront seat 118, and the secondfront airbag 121 may be disposed between theinstrument panel 12 and the secondfront seat 119. The firstfront airbag 120 may have abottom edge 122 that extends below thesteering wheel 30. The secondfront airbag 121 may have abottom edge 123. In an oblique impact, the secondfront airbag 121 may selectively deploy depending on several conditions, e.g., whether the secondfront seat 119 is occupied. - The first and second
front airbags chambers 138, as shown inFIG. 8 . The protrudedchambers 138 may be inflatable portions of the first and secondfront airbags front seats front airbags chambers 138 extend toward the first and secondfront seats chambers 138 may receive occupants during, e.g., an oblique impact. In addition, the protrudedchambers 138 may extend toward thewindshield 32. Thewindshield 32 may support the first and secondfront airbags windshield 32 may act as a reaction surface to maintain the position of the first and secondfront airbags windshield 32 during the impact event. -
FIG. 9 shows a second embodiment of afront airbag 220. Common elements fromFIGS. 1-7 are shown with common numerals. Thefront airbag 220 may include protrudedchambers 238 extending toward thewindshield 32. Thewindshield 32 may support thefront airbag 220 during the impact event. In other words, thewindshield 32 may act as a reaction surface to maintain the position of thefront airbag 220 relative to thewindshield 32 during the impact event. The protrudedchambers 238 may be inflatable portions of thefront airbag 220 extending toward thewindshield 32 or may be separately connected (not shown). The protrudedchambers 238 may be disposed at select points along thefront airbag 220, or may extend the length of thefront airbag 220. - The disclosure has been described in an illustrative manner, and it is to be understood that the terminology which has been used is intended to be in the nature of words of description rather than of limitation. Many modifications and variations of the present disclosure are possible in light of the above teachings, and the disclosure may be practiced otherwise than as specifically described.
Claims (22)
Priority Applications (5)
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US14/673,935 US9446735B1 (en) | 2015-03-31 | 2015-03-31 | Vehicle impact absorbing system |
CN201610135003.5A CN106004770B (en) | 2015-03-31 | 2016-03-10 | Vehicle impact absorbing system |
DE102016104896.8A DE102016104896A1 (en) | 2015-03-31 | 2016-03-16 | Vehicle impact absorption system |
RU2016111318A RU2016111318A (en) | 2015-03-31 | 2016-03-28 | VEHICLE (OPTIONS) |
MX2016004051A MX2016004051A (en) | 2015-03-31 | 2016-03-30 | Vehicle impact absorbing system. |
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US14/673,935 US9446735B1 (en) | 2015-03-31 | 2015-03-31 | Vehicle impact absorbing system |
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US9446735B1 US9446735B1 (en) | 2016-09-20 |
US20160288761A1 true US20160288761A1 (en) | 2016-10-06 |
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CN (1) | CN106004770B (en) |
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Also Published As
Publication number | Publication date |
---|---|
DE102016104896A1 (en) | 2016-10-06 |
CN106004770A (en) | 2016-10-12 |
CN106004770B (en) | 2020-02-14 |
US9446735B1 (en) | 2016-09-20 |
MX2016004051A (en) | 2016-09-29 |
RU2016111318A (en) | 2017-10-03 |
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