WO2010122827A1 - 車両用乗員保護装置 - Google Patents
車両用乗員保護装置 Download PDFInfo
- Publication number
- WO2010122827A1 WO2010122827A1 PCT/JP2010/050941 JP2010050941W WO2010122827A1 WO 2010122827 A1 WO2010122827 A1 WO 2010122827A1 JP 2010050941 W JP2010050941 W JP 2010050941W WO 2010122827 A1 WO2010122827 A1 WO 2010122827A1
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- WIPO (PCT)
- Prior art keywords
- expansion
- vehicle
- portions
- airbag
- gas introduction
- Prior art date
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- 230000000694 effects Effects 0.000 description 21
- 238000004891 communication Methods 0.000 description 16
- 238000005192 partition Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 2
- 230000002633 protecting effect Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 230000008961 swelling Effects 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
- B60R21/213—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
- B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
Definitions
- the present invention relates to a vehicle occupant protection device that deploys a side curtain airbag in a curtain along a window (side window).
- An occupant protection device disclosed in Patent Literature 1 and Patent Literature 2 includes, in a side curtain airbag, an upper communication passage that introduces gas from an inflator, and a plurality of cells (in which gas flows from the upper communication passage and expands) ( Inflatable part).
- the upper communication path extends in the longitudinal direction of the vehicle body.
- the plurality of cells are arranged in the longitudinal direction of the vehicle body below the upper communication path.
- the upper ends of these cells are arranged so that every other cell has a different height. Since the upper ends of the cells are unevenly arranged in the vertical direction, the gas flows from the upper communication path into the cells with a time difference.
- An object of the present invention is to provide a technique capable of further enhancing the occupant protection effect in a vehicle occupant protection device including a side curtain airbag.
- a vehicle occupant protection device a side curtain airbag that is folded and stored along a side portion of a roof of a vehicle body, and the side curtain airbag is inflated so that An inflator that supplies gas to the side curtain airbag so as to be deployed in a curtain shape along the side curtain airbag, extending in the longitudinal direction of the vehicle body along the side portion of the roof, A gas introduction chamber that introduces the gas in a longitudinal direction of the vehicle body; and a lower expansion portion that expands below the gas introduction chamber when the gas flows from the gas introduction chamber.
- the chamber is located in each of the plurality of pillars in the vehicle body, and has a plurality of upper expansion large portions respectively arranged in the vehicle body longitudinal direction, Each of the plurality of upper expansion most is the vehicle occupant protection apparatus greatly expanded in the vehicle width direction than the expanded subsection is another portion of the gas introduction chamber is provided.
- the plurality of upper inflatable portions include a front pillar inflating portion, and the front pillar inflating portion is a front pillar in the plurality of pillars when the side curtain airbag is deployed. It is a portion that expands to the rear region of the front pillar along the rear upper part.
- the plurality of upper inflation large portions include a rear pillar inflation large portion
- the rear pillar inflation large portion is a front upper portion of a rear pillar among the plurality of pillars when the side curtain airbag is deployed. A portion that swells to the front region of the rear pillar.
- the side curtain airbag has a distortion suppressing portion for suppressing the lower inflating portion from being distorted in the longitudinal direction of the vehicle body when the side curtain airbag is deployed.
- the lower expansion portion is formed so as to correspond to at least an intermediate position of the plurality of upper expansion large portions.
- the lower inflating portion has a sub inflating portion located near the front edge of the window when the side curtain airbag is deployed.
- the gas introduction chamber of the side curtain airbag extends in the longitudinal direction of the vehicle body along the side portion of the roof (that is, the upper edge of the window).
- the gas introduction chamber has a plurality of upper expansion large portions arranged in the longitudinal direction of the vehicle body. These upper expansion large parts are located corresponding to each of the plurality of pillars in the vehicle body.
- the plurality of upper expansion large portions expand larger in the vehicle width direction than the expansion small portions positioned between the upper expansion large portions so as to communicate with the upper expansion large portions. That is, the large upper expansion portion expands greatly in the vicinity of the plurality of pillars and in the vicinity of the upper edge of the window.
- the lower expansion chamber located below the gas introduction chamber is inflated, and the plurality of upper inflation large portions of the gas introduction chamber are It expands greatly in the width direction.
- the plurality of expanded upper portions that are inflated block the occupant from the upper portion of each of the plurality of pillars and the vicinity thereof.
- the large portion of the front pillar inflation is inflated to the rear region of the front pillar along the rear upper part of the front pillar.
- the inflated front pillar expansion large part blocks the upper part of the front pillar and the vicinity thereof and the occupant.
- the rear pillar inflation large part is inflated forward of the rear pillar along the front upper part of the rear pillar.
- the inflated large portion of the rear pillar blocks the occupant from the upper part of the rear pillar and the vicinity thereof.
- the side curtain airbag has a distortion suppressing portion for suppressing the lower inflating portion from being distorted in the longitudinal direction of the vehicle body when the side curtain airbag is deployed.
- the lower expansion chamber located below the gas introduction chamber may be affected by the influence, and distortion in the longitudinal direction of the vehicle body may occur.
- the distortion of the lower inflating portion is suppressed, the entire side curtain airbag is not easily distorted in the longitudinal direction of the vehicle body. For this reason, even if the several upper expansion large part located above the lower expansion part expand
- the sub-expansion chamber when the side curtain airbag is deployed, the sub-expansion chamber is located near the front edge of the window. For this reason, a passenger
- FIG. 1 is a side view of a vehicle showing a state in which a side curtain airbag as an occupant protection device according to the present invention is folded.
- FIG. It is the side view of the vehicle which showed the state which the side curtain airbag by Example 1 expand
- FIG. 4 is an enlarged cross-sectional view taken along line 4-4 of FIG.
- FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG.
- the vehicle 10 has a monocoque body body 11 and includes two front and rear seats 13, 14, that is, a front seat 13 and a rear seat 14 in a vehicle compartment 12.
- An occupant Mf such as a driver is seated on the front seat 13, and an occupant Mr is seated on the rear seat 14.
- the vehicle body 11 includes a front pillar 15, a center pillar 16, a rear pillar 17, and a roof side rail 18 coupled to the upper ends of the pillars 15, 16, and 17.
- the roof side rail 18 is an elongated member that extends in the front-rear direction of the vehicle body 11 and supports the roof 19.
- the roof side rail 18 is provided along a side edge (or side portion, side corner) 19 a of the roof 19.
- the vehicle body 11 includes a front side door 21 provided between the front pillar 15 and the center pillar 16, and a rear side door 22 provided between the center pillar 16 and the rear pillar 17.
- the front side door 21 is disposed adjacent to the front seat 13 and has a window 23 (front window 23) in the upper half.
- the rear side door 22 is disposed adjacent to the rear seat 14 and has a window 24 (rear window 24) in the upper half.
- the occupant protection device 30 is installed on the roof side rail 18. More specifically, the occupant protection device 30 is configured so that the side curtain airbag 31 in a stored state (folded state or wound state) is along the side edge 19a of the roof 19, that is, the window 23 of the vehicle body 11, 24 is attached to the roof side rail 18 along the upper edges 23a, 24a.
- the side curtain airbag 31 is abbreviated as “airbag 31”.
- the occupant protection device 30 generates a gas from the inflator 32 when the side portion of the vehicle 10 receives an impact force of a certain level or more, and supplies the gas to the airbag 31, so that the airbag 31 has the windows 23. , 24 to the vehicle compartment 12 side.
- Such an occupant protection device 30 is said to be a “side curtain airbag device”.
- the airbag 31 deployed in the passenger compartment 12 covers the windows 23 and 24 and absorbs the impact acting on the passengers Mf and Mr sitting on the seats 13 and 14. The passengers Mf and Mr are protected.
- the inflator 32 gas supply source 32
- the inflator 32 is attached to the rear pillar 17 and connected to the gas inlet 41 of the airbag 31.
- FIG. 3 shows the airbag 31 in a state of being deployed in the vehicle compartment 12.
- the airbag 31 is formed by combining, for example, two sheets of front and back sheets having flexibility such as an airtight cloth.
- the airbag 31 includes a gas introduction chamber 40 and a deployment part 50.
- the gas generated from the inflator 32 flows into the gas introduction chamber in the front-rear direction of the vehicle body.
- the gas introduction chamber 40 is formed in a substantially cylindrical shape that extends in the longitudinal direction of the vehicle body along the side edge 19 a of the roof 19.
- a gas introduction port 41 for introducing gas from the inflator 32 is provided at the rear end of the gas introduction chamber 40.
- the gas introduction chamber 40 includes a plurality of upper expansion large portions 42, 43, 44 arranged in the vehicle body longitudinal direction so as to correspond to the positions of the plurality of pillars 15, 16, 17. Have.
- the plurality of upper inflating large portions 42, 43, 44 are communicated with each other by a plurality of inflating small portions 45, 46, so as to be larger than the thickness of the inflating small portions 45, 46 inflated when the airbag 31 is deployed. It expands greatly in the vehicle width direction (the front and back direction in FIG. 3).
- the plurality of upper expansion large portions 42, 43, 44 are composed of three parts: a front pillar expansion large portion 42, a center pillar expansion large portion 43, and a rear pillar expansion large portion 44.
- the front pillar inflation large portion 42 When the airbag 31 is deployed, the front pillar inflation large portion 42 is inflated to the front pillar 15 and its rear region along the upper rear edge of the front pillar 15. As shown in FIGS. 3 to 5, when gas flows into the gas introduction chamber 40, the front pillar expansion large portion 42 expands to be thicker than the thickness of the upper expansion small portion 45 during expansion. It is preferable that the upper expanded large portions 42, 43, 44 have a thickness (thickness in the vehicle width direction) when expanded larger than the lower expanded portions 51, 52.
- the center pillar inflating large portion 43 inflates to the upper part of the center pillar 16 and its front and rear regions when the airbag 31 is deployed.
- the rear pillar inflation large portion 44 is inflated to the rear pillar 17 and its front region along the upper part of the front edge of the rear pillar 17.
- the unfolding part 50 is a sheet-like member that unfolds in a curtain shape along the inner surfaces of the windows 23 and 24, and protects the passengers Mf and Mr (FIG. 1).
- the expansion portion 50 has a plurality of, for example, two front and rear lower expansion portions 51 and 52 that expand due to the pressure of the gas when expanded. These lower expansion portions 51 and 52 expand greatly in the vehicle width direction below the gas introduction chamber 40 when gas flows in from the gas introduction chamber 40.
- the first lower inflating part 51 is located in the first half of the developing part 50, and the second lower inflating part 52 is located in the latter half of the developing part 50.
- the first lower inflating part 51 is inflated at a position corresponding to an occupant seated on the front seat 13 (FIG. 1). Further, the first lower inflating part 51 has a sub inflating part (first sub inflating part) 53 located near the front edge of the front window 23 when the airbag 31 is deployed.
- the first sub-expansion portion 53 adjusts the internal pressure of the first lower expansion portion 51, and is adjacent to the front of the first lower expansion portion 51, and the first lower expansion portion 51 has a lower portion. It communicates via the communication path 54.
- the lower communication passage 54 is designed so that the gas passage during expansion is small in order to limit the gas flow rate.
- the first sub-inflatable portion 53 is positioned in front of the occupant Mf (especially the upper body) seated on the front seat 13. For this reason, the 1st sub expansion
- the second lower inflating part 52 is inflated at a position corresponding to an occupant seated on the rear seat 14 (FIG. 1).
- the second lower inflating part 52 has a sub inflating part (second sub inflating part) 55 located near the front edge of the rear window 24 when the airbag 31 is deployed.
- the second sub inflating part 55 adjusts the internal pressure of the second lower inflating part 52, is adjacent to the front of the second lower inflating part 52, and has a lower part in the second lower inflating part 52. It communicates via the communication path 56.
- the lower communication path 56 is designed so that the gas path during expansion is small in order to limit the gas flow rate.
- the second sub inflating portion 55 is positioned in front of the occupant Mr (especially the upper body) seated on the rear seat 14. For this reason, the second sub-expansion portion 55 is located away from the rear seat 14 and can be expanded in the vehicle width direction.
- the first and second sub-inflation parts 53 and 55 are positioned in the vicinity of the front edges of the windows 23 and 24. For this reason, when the occupants Mf and Mr have a secondary collision near the front edges of the windows 23 and 24, the occupant protection, particularly the head protection effect can be further enhanced. Further, when the occupants Mf and Mr hit the first and second lower inflating portions 51 and 52, the internal pressures of the first and second lower inflating portions 51 and 52 are changed to the first and second sub inflating portions 53 and 52, respectively. You can escape to 55. For this reason, it can suppress that the internal pressure of the 1st and 2nd lower expansion chambers 51 and 52 rises.
- the airbag 31 has a plurality of distortion suppressing portions 57 for suppressing the first and second lower inflating portions 51 and 52 from being distorted in the longitudinal direction of the vehicle body when the airbag 31 is deployed.
- the plurality of distortion suppressing portions 57 are formed in the first and second lower inflating portions 51 and 52 at at least intermediate positions between the plurality of upper inflating large portions 42, 43, and 44 arranged in the vehicle longitudinal direction. .
- the strain suppressing portion 57 extends linearly by a predetermined length upward from the bottom of the first and second lower expanding portions 51 and 52 and the second sub expanding portion 55, for example, It is formed by stitching together two front and back sheets for constituting the airbag 31 and has a function of a reinforcing rib.
- the first and second lower expansion portions 51, 52 positioned below the gas introduction chamber 40 are affected by the influence of the expansion. Distortion (deformation) may occur.
- the distortion suppressing portion 57 causes the first and second lower inflating portions 51 and 52 to be distorted (deformed) in the longitudinal direction of the vehicle body. To suppress that. Since the distortion of the first and second lower inflating portions 51 and 52 is suppressed, the entire airbag 31 is not easily distorted in the longitudinal direction of the vehicle body. For this reason, even if the several upper expansion large parts 42, 43, and 44 located above the 1st and 2nd lower expansion parts 51 and 52 expand
- the airbag 31 includes a plurality of upper mounting portions 61, one front mounting portion 62, and one rear mounting portion 63.
- the plurality of upper attachment portions 61 are attachment pieces extending upward from the upper portion of the deployed airbag 31, and are arranged along the roof side rail 18. These upper attaching portions 61 are respectively attached to the roof side rails 18.
- the front attachment portion 62 is an attachment piece that extends forward from the front portion at the lower end of the deployed airbag 31 and is attached to the front pillar 15.
- the rear attachment portion 63 is an attachment piece extending rearward from the rear portion at the lower end of the deployed airbag 31 and is attached to the rear pillar 17.
- the description of the first embodiment is summarized as follows (see FIGS. 2 and 3).
- the gas introduction chamber 40 extends in the longitudinal direction of the vehicle body along the side portion 19a of the roof 19 (that is, the upper edges of the windows 23 and 24), and has a plurality of upper expansion large portions 42 and 43 arranged in the longitudinal direction of the vehicle body. , 44.
- These upper expansion large portions 42, 43, 44 are positioned so as to correspond to the respective positions of the plurality of pillars 15, 16, 17 in the vehicle body 11.
- the airbag 31 curtains downward along the windows 23 and 24. Expands into a shape.
- the first and second lower inflatable portions 51 and 52 are inflated to protect the passengers Mf and Mr.
- the plurality of upper expansion large portions 42, 43, 44 expand more in the vehicle width direction than the expansion small portions 45, 46 in the gas introduction chamber 40. That is, in the vicinity of the plurality of pillars 15, 16, 17 and in the vicinity of the upper edges 23 a, 24 a of the windows 23, 24, the upper expansion large portions 42, 43, 44 expand greatly.
- the first and second lower inflating portions 51 and 52 located below the gas introduction chamber 40 are inflated, and the gas introduction is performed.
- a plurality of upper expansion large portions 42, 43, and 44 in the chamber 40 expand greatly in the vehicle width direction.
- the plurality of expanded upper portions 42, 43, and 44 that have inflated block the upper portions of the pillars 15, 16, and 17 and the vicinity thereof and the occupants Mf and Mr.
- the passengers Mf and Mr are also located in the vicinity of the plurality of pillars 15, 16 and 17 and also in the vicinity of the upper edges 23 a and 24 a of the windows 23 and 24. Can be well protected.
- the plurality of expanded upper portions 42, 43, and 44 that have expanded come into contact with the plurality of pillars 15, 16, and 17, respectively. Therefore, the entire airbag 31 is supported near the occupants Mf and Mr by the plurality of pillars 15, 16, and 17.
- the entire airbag 31 is prevented from freely swinging in the vehicle width direction. For this reason, the timing at which the occupants Mf and Mr are started to be restrained by the airbag 31 can be advanced.
- the upper expansion having high resistance to deformation is formed between the pillars 15, 16, and 17 and the windows 23 and 24 and the occupants Mf and Mr.
- Most of 42, 43, and 44 are developed.
- the amount of deformation (stroke amount) by which the upper expansion large portions 42, 43, 44 can be deformed in the vehicle width direction is larger than that of the expansion small portions 45, 46. For this reason, it is possible to stably ensure a large stroke amount as compared with the small expansion portions 45 and 46 and also to ensure the inflow of gas to the lower expansion portions 51 and 52.
- the front pillar inflation large portion 42 is inflated to the rear of the front pillar 15 along the upper rear edge of the front pillar 15.
- the expanded front pillar expansion large part 42 sufficiently blocks the upper part of the front pillar 15 and the vicinity thereof and the occupant Mf.
- the occupant protection effect when the occupant Mf collides with the inner surface of the vehicle body 11 after the primary collision has occurred can be enhanced. Therefore, in the event of an emergency such as a side collision or rollover of the vehicle 10, the occupant Mf can be sufficiently protected in the vicinity of the front pillar 15 and also in the vicinity of the upper edge 23a of the front window 23.
- the rear pillar inflation large portion 44 is inflated forward of the rear pillar 17 along the upper front edge of the rear pillar 17.
- the expanded rear pillar expansion portion 44 blocks the upper portion of the rear pillar 17 and the vicinity thereof and the occupant Mr.
- the occupant protection effect when the occupant Mr collides with the inner surface of the vehicle body 11 after the primary collision has occurred can be enhanced. Therefore, in the event of an emergency such as a side collision or rollover of the vehicle 10, the occupant Mr can be sufficiently protected in the vicinity of the rear pillar 17 and also in the vicinity of the upper edge 24a of the rear window 24.
- FIG. 7A shows the airbag 131 in a state of being deployed in the vehicle compartment 12.
- FIG. 7B shows the airbag 131 in a deployed state.
- the occupant protection device 130 includes an airbag 131.
- the airbag 131 includes a gas introduction chamber 140 and a deployment unit 150.
- the gas introduction chamber 140 has a plurality of upper expansion large portions 142, 143, and 144 that are positioned in the longitudinal direction of the vehicle body so as to correspond to the positions of the plurality of pillars 15, 16, and 17, respectively.
- the plurality of upper expansion large portions 142, 143, and 144 expand larger in the vehicle width direction than the expansion small portions 145 and 146, which are other portions in the gas introduction chamber 140.
- the gas introduction chamber 140 has a gas introduction port 141 for introducing gas.
- the plurality of upper expansion large portions 142, 143, and 144 are three of a front pillar expansion large portion 142, a center pillar expansion large portion 143, and a rear pillar expansion large portion 144.
- the deployment unit 150 is a sheet-like member that can be deployed in a curtain shape along the windows 23 and 24 in the vehicle compartment 12, and protects the passengers Mf and Mr.
- the development part 150 includes a plurality of lower inflating parts 151 that are expanded by the pressure of gas when deployed. These lower expansion portions 151 are greatly expanded in the vehicle width direction below the gas introduction chamber 140 when gas flows in from the gas introduction chamber 140.
- the plurality of lower expansion chambers 151 are arranged in the longitudinal direction of the vehicle body, and an upper end 153 (including upper ends 153A to 153C) is opened and a lower end is closed so as to branch downward from the gas introduction chamber 140, respectively.
- the lower inflating portions 151 and 151 adjacent to each other are partitioned by a partition wall 152 (including partition walls 152A to 152C).
- These partition walls 152 are portions that extend in a straight line from the vicinity of the lower end to the vicinity of the gas introduction chamber 140 in the deploying portion 150.
- the partition walls 152 include two front and back sheets for forming the airbag 31. Constructed by sewing together.
- the plurality of partition walls 152 also serve as the “distortion suppressing portion 57” of the first embodiment. That is, the plurality of partition walls 152 prevent the plurality of lower inflating portions 151 from being distorted in the longitudinal direction of the vehicle body when the airbag 131 is deployed. For this reason, the plurality of partition walls 152 are formed in the lower inflating portion 151 at at least an intermediate position between the plurality of upper inflating large portions 142, 143, and 144 arranged in the longitudinal direction of the vehicle body.
- the plurality of partition walls 152 prevent the plurality of lower inflating portions 151 from being distorted in the longitudinal direction of the vehicle body. Since the distortion of each lower inflatable portion 151 is suppressed, the entire airbag 131 is not easily distorted in the vehicle longitudinal direction. For this reason, even if the several upper expansion large part 142,143,144 located above the several lower expansion part 151 expand
- the upper ends 153A to 153C of the partition walls 152A to 152C positioned directly below the upper expansion portions 142, 143, and 144 are more than the positions of the upper ends 153 of the other partition walls 152. It is in a low position.
- the upper ends 153 of the plurality of partition walls 152 are positioned on the reference line Ls in a state where the airbag 131 is deployed.
- the upper end 153A of the partition wall 152A located immediately below the front pillar expansion large part 142 is lower than the reference line Ls by the distance X1.
- a relatively large first space 142 is formed in the front portion of the gas introduction chamber 140 in the longitudinal direction.
- the first space 142 constitutes a front pillar expansion large portion 142.
- the upper end 153B of the partition wall 152B located directly below the center pillar expansion large part 143 is lower than the reference line Ls by a distance X2.
- a relatively large second space 143 is formed in the middle portion of the gas introduction chamber 140 in the longitudinal direction.
- the second space portion 143 constitutes a center pillar expansion large portion 143.
- the upper end 153C of the partition wall 152C located directly below the rear pillar expansion large part 144 is lower than the reference line Ls by a distance X3.
- a relatively large third space 144 is formed at the rear in the longitudinal direction of the gas introduction chamber 140.
- the third space portion 144 constitutes a rear pillar expansion large portion 144.
- the foremost lower inflation part 151 has a sub-inflation part 155 located near the front edge of the front window 23 when the airbag 131 is deployed.
- the sub inflating portion 155 adjusts the internal pressure of the lower inflating portion 151, is adjacent to the front of the foremost lower inflating portion 151, and communicates with the lower inflating portion 151 via the communication path 156. Yes.
- the communication passage 156 has a narrow gas passage in order to limit the gas flow rate.
- the sub inflating portion 155 is located in the vicinity of the front edge of the front window 23. Therefore, when the occupants Mf and Mr (see FIG. 1) have a secondary collision near the front edges of the windows 23 and 24, the occupant protection effect can be further enhanced.
- the occupants Mf and Mr hit the lower inflating portion 151, for example, when the occupants Mf and Mr have a secondary collision near the front edges of the windows 23 and 24, the internal pressure of the lower inflating portion 151 is released to the sub inflating portion 155. be able to. For this reason, it is suppressed that the internal pressure of the lower expansion part 151 rises.
- Example 2 exhibits the same operations and effects as Example 1. That is, the plurality of expanded upper portions 142, 143, and 144 that are inflated shield the upper portions of the plurality of pillars 15, 16, and 17 and the vicinity thereof from the occupants Mf and Mr. As a result, when the occupants Mf and Mr collide with the inner surface of the vehicle body 11 after the primary collision occurs, the occupant protection effect at the time of so-called secondary collision can be further enhanced. Therefore, in the event of an emergency such as a side collision or rollover of the vehicle 10, the passengers Mf and Mr are sufficiently protected in the vicinity of the plurality of pillars 15, 16, and 17 and in the vicinity of the upper edges of the windows 23 and 24. can do.
- the expanded front pillar expansion large portion 142 blocks the upper portion of the front pillar 15 and the vicinity thereof and the occupant Mf.
- the occupant protection effect when the occupant Mf collides with the inner surface of the vehicle body 11 after the primary collision has occurred can be enhanced. Therefore, in the event of an emergency such as a side collision or rollover of the vehicle 10, the occupant Mf can be sufficiently protected in the vicinity of the front pillar 15 and also in the vicinity of the upper edge of the front window 23.
- the expanded rear pillar expansion large portion 144 blocks the upper portion of the rear pillar 17 and the vicinity thereof and the occupant Mr.
- the occupant protection effect when the occupant Mr collides against the inner surface of the vehicle body 11 after the primary collision has occurred can be enhanced. Therefore, in the event of an emergency such as a side collision or rollover of the vehicle 10, the occupant Mr can be sufficiently protected in the vicinity of the rear pillar 17 and also in the vicinity of the upper edge of the rear window 24.
- FIG. 9A shows the airbag 231 deployed in the vehicle compartment 12.
- FIG. 9B shows the airbag 231 in a deployed state.
- the occupant protection device 230 includes an airbag 231.
- the airbag 231 includes a gas introduction chamber 240 and a deployment unit 250.
- the gas introduction chamber 240 has a plurality of upper expansion large portions 242, 243, 244 arranged in the longitudinal direction of the vehicle body so as to correspond to the positions of the plurality of pillars 15, 16, 17.
- the plurality of upper expansion large portions 242, 243, 244 expand more in the vehicle width direction than the expansion small portions 245, 246, which are other portions in the gas introduction chamber 240.
- the gas introduction chamber 240 has a gas introduction port 241 for introducing gas.
- the plurality of upper expansion large portions 242, 243, and 244 are three of the front pillar expansion large portion 242, the center pillar expansion large portion 243, and the rear pillar expansion large portion 244.
- the front pillar expansion large portion 242 corresponds to the front pillar expansion large portion 42 of the first embodiment.
- the center pillar expansion large portion 243 corresponds to the center pillar expansion large portion 43 of the first embodiment.
- the rear pillar expansion large portion 244 corresponds to the rear pillar expansion large portion 44 of the first embodiment.
- the deployment unit 250 is a sheet-like member that can be deployed in a curtain shape along the windows 23 and 24 in the vehicle compartment 12, and protects the passengers Mf and Mr (FIG. 1).
- the expansion section 250 includes a plurality of, for example, four front and rear lower expansion sections (main expansion sections) 251 and 252 that expand due to the pressure of the gas when deployed.
- the lower expansion portions 251 and 252 expand greatly in the vehicle width direction below the gas introduction chamber 240 when gas flows in from the gas introduction chamber 240.
- the first lower expansion parts 251 and 251 are arranged in the first half part of the development part 250, and the second lower expansion parts 252 and 252 are arranged in the second part of the development part 250.
- 1st lower expansion part 251,251 expands in the side part position of front seat 13 (Drawing 1). Further, the first lower inflating portions 251 and 251 have a sub inflating portion (first sub inflating portion) 253 located near the front edge of the front window 23 when the airbag 231 is deployed. .
- the first sub-expansion part 253 adjusts the internal pressure of the first lower expansion part 251, 251 and is adjacent to the front of the first lower expansion part 251, and the first lower expansion part 251. Are communicated with each other via a communication passage 254 (reduced diameter portion 254).
- the communication path 254 is narrowed to limit the gas flow rate.
- the first sub-inflating portion 253 is disposed so as to be positioned in front of the occupant Mf (particularly the head) seated on the front seat 13. For this reason, the first sub-expansion portion 253 can be expanded in the vehicle width direction at a position away from the front seat 13.
- 2nd lower expansion part 252 and 252 expand
- the second lower inflatable portions 252 and 252 have a sub inflatable portion (second sub inflatable portion) 255 located in the vicinity of the front edge of the rear window 24 when the airbag 31 is deployed.
- the second sub-expansion portion 255 adjusts the internal pressure of the second lower expansion portions 252 and 252 and is adjacent to the front of the second lower expansion portion 252 and is also adjacent to the second lower expansion portion 252.
- the communication path 256 is narrow in order to limit the gas flow rate.
- the second sub inflating portion 255 is arranged to be positioned in front of the occupant Mr (especially the head) seated on the rear seat 14. For this reason, the second sub-expansion portion 255 can be expanded in the vehicle width direction at a position away from the rear seat 14.
- the first and second sub-inflation parts 253 and 255 are located in the vicinity of the front edges of the windows 23 and 24. For this reason, it is possible to further enhance the occupant protection effect when the occupants Mf and Mr have a secondary collision near the front edges of the windows 23 and 24.
- the first and second lower inflating portions 251 and 252 hit the first and second lower inflating portions 251 and 252, for example, when the occupants Mf and Mr collide near the front edges of the windows 23 and 24, the first and second The internal pressure of the lower expansion portions 251 and 252 can be released to the sub expansion portions 253 and 255. For this reason, an increase in the internal pressure of the first and second lower inflating portions 251 and 252 is suppressed.
- the airbag 231 has a plurality of distortion suppressing portions 257 for suppressing the first and second lower inflating portions 251 and 252 from being distorted in the longitudinal direction of the vehicle body when the airbag 231 is deployed.
- the plurality of distortion suppression portions 257 are provided at first and second lower expansion chambers 251 and 252 and the second sub-portion at least at intermediate positions between the plurality of upper expansion large portions 242, 243 and 244 arranged in the longitudinal direction of the vehicle body. It is formed in the expansion part 255.
- the first and second lower inflating portions 251 and 252 and the second sub inflating portion 255 are portions extending linearly upward by a predetermined length from, for example, the airbag 231. It is formed by stitching together two front and back sheets for construction.
- the distortion suppressing unit 257 suppresses the first and second lower inflating units 251 and 252 from being distorted in the longitudinal direction of the vehicle body. Since the distortion of the first and second lower inflating portions 251 and 252 is suppressed, the entire airbag 231 is not easily distorted in the longitudinal direction of the vehicle body. For this reason, even if the plurality of upper inflation large portions 242, 243, 244 located above the first and second lower inflation portions 251, 252 are inflated, distortion of the entire airbag 231 can be suppressed. it can. As a result, the passenger protection effect by the airbag 231 can be further enhanced.
- Example 3 demonstrates the same operations and effects as Example 1. That is, the plurality of expanded upper large portions 242, 243, 244 block the upper portions of the plurality of pillars 15, 16, 17 and the vicinity thereof and the occupants Mf, Mr. As a result, when the occupants Mf and Mr collide with the inner surface of the vehicle body 11 after the primary collision occurs, the occupant protection effect at the time of so-called secondary collision can be further enhanced. Therefore, in the event of an emergency such as a side collision or rollover of the vehicle 10, the passengers Mf and Mr are sufficiently protected in the vicinity of the plurality of pillars 15, 16, and 17 and in the vicinity of the upper edges of the windows 23 and 24. can do.
- the expanded front pillar expansion part 242 blocks the upper part of the front pillar 15 and the vicinity thereof and the occupant Mf.
- the occupant protection effect when the occupant Mf collides with the inner surface of the vehicle body 11 after the primary collision has occurred can be enhanced. Therefore, in the event of an emergency such as a side collision or rollover of the vehicle 10, the occupant Mf can be sufficiently protected in the vicinity of the front pillar 15 and also in the vicinity of the upper edge of the front window 23.
- the expanded rear pillar expansion large portion 244 blocks the upper portion of the rear pillar 17 and the vicinity thereof and the occupant Mr.
- the occupant protection effect when the occupant Mr collides against the inner surface of the vehicle body 11 after the primary collision has occurred can be enhanced. Therefore, in the event of an emergency such as a side collision or rollover of the vehicle 10, the occupant Mr can be sufficiently protected in the vicinity of the rear pillar 17 and also in the vicinity of the upper edge of the rear window 24.
- the occupant protection device 30, 130, 230 of the present invention is suitable for use in a side curtain airbag of a passenger car such as a wagon or a sedan.
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- Engineering & Computer Science (AREA)
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- Air Bags (AREA)
Abstract
Description
ガス導入室40は、ルーフ19の側部19a(つまり、窓23,24の上縁)に沿って車体前後方向に延びており、車体前後方向に配置された複数の上部膨張大部42,43,44を有している。これらの上部膨張大部42,43,44は、車体11における複数のピラー15,16,17の各々の位置にそれぞれ対応するよう位置している。
Claims (5)
- 車両用乗員保護装置であって、
車体のルーフにおける側部に沿って折り畳まれて収納されるサイドカーテンエアバッグと、
前記サイドカーテンエアバッグが膨張し、窓内面に沿ってカーテン状に展開するよう、前記サイドカーテンエアバッグにガスを供給するインフレータと、
を具備しており、
前記サイドカーテンエアバッグは、
前記ルーフにおける側部に沿いつつ車体前後方向に延びて、前記ガスを車体前後方向へ導入するガス導入室と、
前記ガス導入室から前記ガスが流入することにより、前記ガス導入室の下方において膨張する下部膨張部と、を有しており、
前記ガス導入室は、前記車体における複数のピラーの各々に位置しており、車体前後方向にそれぞれ配置された複数の上部膨張大部を有しており、
前記複数の上部膨張大部の各々は、前記ガス導入室における他の部分である膨張小部よりも車幅方向に大きく膨張する、ことを特徴とする車両用乗員保護装置。 - 前記複数の上部膨張大部は、フロントピラー膨張大部を含んでおり、
前記フロントピラー膨張大部は、前記サイドカーテンエアバッグを展開したとき、前記複数のピラーの中のフロントピラーにおける後上部に沿って、フロントピラーの後方領域へ膨張する部分である、請求項1に記載の車両用乗員保護装置。 - 前記複数の上部膨張大部には、リヤピラー膨張大部を含んでおり、
前記リヤピラー膨張大部は、前記サイドカーテンエアバッグを展開したとき、前記複数のピラーの中のリヤピラーにおける前上部に沿って、リヤピラーの前方領域へ膨張する部分である、請求項1に記載の車両用乗員保護装置。 - 前記サイドカーテンエアバッグは、前記サイドカーテンエアバッグを展開したとき、前記下部膨張部が車体前後方向へ歪むことを抑制するための歪み抑制部を有しており、
前記歪み抑制部は、前記複数の上部膨張大部の少なくとも中間位置に対応するよう、前記下部膨張部に形成されている、請求項1に記載の車両用乗員保護装置。 - 前記下部膨張部は、前記サイドカーテンエアバッグを展開したとき、前記窓の前縁近傍に位置するサブ膨張部を有している、請求項1に記載の車両用乗員保護装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2011510245A JP5465717B2 (ja) | 2009-04-21 | 2010-01-26 | 車両用乗員保護装置 |
US13/264,531 US8424906B2 (en) | 2009-04-21 | 2010-01-26 | Passenger protection device for vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009102965 | 2009-04-21 | ||
JP2009-102965 | 2009-04-21 |
Publications (1)
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WO2010122827A1 true WO2010122827A1 (ja) | 2010-10-28 |
Family
ID=43010951
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PCT/JP2010/050941 WO2010122827A1 (ja) | 2009-04-21 | 2010-01-26 | 車両用乗員保護装置 |
Country Status (3)
Country | Link |
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US (1) | US8424906B2 (ja) |
JP (1) | JP5465717B2 (ja) |
WO (1) | WO2010122827A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015122209A1 (ja) * | 2014-02-12 | 2015-08-20 | トヨタ自動車株式会社 | 表示装置及び運転支援装置 |
Families Citing this family (6)
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JP5640686B2 (ja) * | 2010-11-16 | 2014-12-17 | マツダ株式会社 | 車両の乗員保護装置 |
WO2013161626A1 (ja) * | 2012-04-23 | 2013-10-31 | 本田技研工業株式会社 | カーテンエアバッグ装置 |
US10836342B2 (en) * | 2017-10-31 | 2020-11-17 | Toyoda Gosei Co., Ltd. | Airbag for head protection |
JP6596742B2 (ja) * | 2017-12-28 | 2019-10-30 | 本田技研工業株式会社 | エアバッグ装置 |
US10872281B2 (en) * | 2018-10-18 | 2020-12-22 | Trw Vehicle Safety Systems Inc. | Airbag with bar code |
KR20230040546A (ko) * | 2021-09-16 | 2023-03-23 | 현대자동차주식회사 | 차량용 커튼에어백 |
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2010
- 2010-01-26 US US13/264,531 patent/US8424906B2/en active Active
- 2010-01-26 JP JP2011510245A patent/JP5465717B2/ja not_active Expired - Fee Related
- 2010-01-26 WO PCT/JP2010/050941 patent/WO2010122827A1/ja active Application Filing
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WO2015122209A1 (ja) * | 2014-02-12 | 2015-08-20 | トヨタ自動車株式会社 | 表示装置及び運転支援装置 |
JP2015154142A (ja) * | 2014-02-12 | 2015-08-24 | トヨタ自動車株式会社 | 表示装置及び運転支援装置 |
Also Published As
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US8424906B2 (en) | 2013-04-23 |
JPWO2010122827A1 (ja) | 2012-10-25 |
JP5465717B2 (ja) | 2014-04-09 |
US20120032427A1 (en) | 2012-02-09 |
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