WO2013114591A1 - 車両用サイドエアバッグ装置 - Google Patents
車両用サイドエアバッグ装置 Download PDFInfo
- Publication number
- WO2013114591A1 WO2013114591A1 PCT/JP2012/052281 JP2012052281W WO2013114591A1 WO 2013114591 A1 WO2013114591 A1 WO 2013114591A1 JP 2012052281 W JP2012052281 W JP 2012052281W WO 2013114591 A1 WO2013114591 A1 WO 2013114591A1
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- WO
- WIPO (PCT)
- Prior art keywords
- bag
- vehicle
- deployed
- side airbag
- airbag device
- Prior art date
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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
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
-
- 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
- B60R21/2334—Expansion control features
- B60R21/2346—Soft diffusers
-
- 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
- B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
- B60R2021/23146—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection seat mounted
-
- 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
- B60R2021/23324—Inner walls crating separate compartments, e.g. communicating with vents
- B60R2021/23332—Inner walls crating separate compartments, e.g. communicating with vents using independent bags, one within the other
Definitions
- the present invention relates to a vehicle side airbag device that protects an occupant during a side collision or rollover of a vehicle.
- the interior of the airbag is partitioned into three inflatable portions (chambers) in the vertical direction, and an inner bag containing an inflator is provided in the central inflatable portion. It has been.
- the inner bag communicates with the upper inflatable portion and the lower inflatable portion through the upper and lower openings, and communicates with the central inflatable portion through the intermediate portion opening. Further, the inner bag is arranged so that the front end of the inner bag is positioned behind the front end of the central inflating portion and ahead of the front end of the seat bag in the inflated and deployed state.
- the inflation gas ejected from the inflator is first supplied to the inner bag, and the inner bag is inflated.
- the inflation gas in the inner bag flows from the upper opening of the inner bag into the upper inflation part, from the lower opening to the lower inflation part, and from the central opening to the central inflation part.
- each inflating part expand
- the inner bag is disposed so that the front end of the inner bag is positioned as described above, the inner bag is inflated near the side of the occupant when the airbag is inflated and deployed. It is restrained not only by the bag) but also by the inner bag (inner bag). Thereby, the restraint performance is improved.
- the shape of the airbag is set in consideration of the restraining performance with respect to the occupant seated at the normal seating position.
- the side airbag is inflated and deployed in a state where the occupant is not seated at the normal seating position.
- the present invention is a vehicle side airbag device that can improve the safety of the occupant when the side airbag is inflated and deployed in a state where the occupant is not seated at the normal seating position.
- the purpose is to obtain.
- a vehicle side airbag device is supported by a side frame disposed in a side portion of a seat bag and is stored in a folded state in an inflator that supplies inflation and deployment gas. And a main bag that is inflated and deployed toward the vehicle front side of the side portion when the inflation and deployment gas is supplied, and is inflated by being provided in the main bag and being supplied with the inflation and deployment gas.
- a side airbag having an internal bag located on the vehicle rear side of the front edge of the side portion in a side view when the gas is supplied to the main bag while being expanded and deployed. .
- “at the time of inflating and deploying” described in claim 1 is at least during the time when the inflator is supplying the inflating and deploying gas, and includes during the inflating and expanding and when the inflating and deploying is completed.
- the inflating and deploying gas when the inflating and deploying gas is supplied from the inflator to the inner bag of the side airbag, the supplied gas is supplied to the main bag while the inner bag is inflated and deployed. Thereby, the main bag is inflated and deployed toward the vehicle front side of the side portion of the seat back.
- the internal pressure of the internal bag is higher than the internal pressure of the main bag, but the internal bag is configured to be positioned on the vehicle rear side with respect to the front edge of the side portion of the seat back in a side view. .
- the vehicle side airbag device in the first aspect, on the front portion side of the side portion, there is a sewing portion of the seat skin that is cleaved by receiving the inflation pressure of the side airbag.
- An opening for inflating and deploying the main bag is formed on the front side of the side portion by tearing the sewing portion, and the inner bag is more than the opening at the time of inflating and deploying.
- the shape is set so as to be located on the vehicle rear side.
- the sewn portion of the seat skin provided on the front side of the side portion of the seat back is split by receiving the inflation pressure of the side airbag.
- an opening is formed on the front side of the side portion, and the main bag is inflated and deployed toward the vehicle front side of the side portion via the opening.
- the inner bag is configured to be positioned on the vehicle rear side with respect to the opening portion when inflated and deployed, the main bag and the inner bag are inflated with the occupant positioned on the vehicle front side of the opening portion. Even when deployed, it is possible to prevent or effectively suppress the occupant from receiving a load from the high-pressure internal bag.
- the shape of the inner bag is set so as to be inflated and deployed in the side portion.
- the inner bag is inflated and deployed within the side portion, that is, outside the side portion, the occupant receives a load from the high-pressure inner bag regardless of the occupant's seating position (sitting posture). Receiving can be prevented or effectively suppressed.
- the interior of the main bag includes a chest chamber for restraining an occupant chest and an occupant waist restraint.
- the inner bag is provided in the chest chamber, communicates with the chest chamber through a communication hole, and communicates with the waist chamber through an inner tube.
- the side airbag is a so-called two-chamber side airbag in which the inside of the main bag is partitioned into a chest chamber and a waist chamber.
- the rise rate and output of the inflator are set high, so that the deployment speed is high and the internal pressure is high.
- this aspect is preferable because, similarly to the first to third aspects, it is possible to prevent or effectively suppress the occupant from receiving a load from the internal bag that has a higher pressure than the main bag. .
- the inner tube constitutes a check valve that closes when the inner pressure of the waist chamber rises above a set value. Yes.
- the inner tube is blocked when the internal pressure of the waist chamber of the main bag rises above a set value by the inflation and deployment gas supplied from the inner bag through the inner tube. This prevents the back flow of gas from the lumbar chamber to the inner bag, and the inner pressure of the lumbar chamber can be maintained at a high level, so that the lumbar chamber has a better impact resistance than the occupant's chest. Can be restrained.
- a vehicle side airbag device is the vehicle side airbag device according to any one of the first to fifth aspects, wherein the main bag is arranged on an upper side when the inflated and deployed state is viewed in a side view.
- the shape is set so that the front-rear dimension is smaller than the front-rear dimension on the lower side.
- the main bag is inflated and deployed so that the front-rear dimension on the upper side is smaller than the front-rear dimension on the lower side. For this reason, even when the main bag is inflated and deployed in a state where the occupant is positioned in the inflating and deploying direction of the main bag, it is possible to reduce the load that the upper side and the neck of the occupant receive from the upper side of the main bag. .
- the vehicle side airbag device is the vehicle side airbag device according to any one of the first to sixth aspects, wherein the communication hole that communicates the inside of the main bag and the inside of the internal bag has the inside. It is formed on the lower side of the bag, and the upper side of the inner bag is closed.
- the inflation and deployment gas supplied from the inflator to the inner bag is supplied to the main bag through the communication hole formed on the lower side of the inner bag, but the upper side of the inner bag is blocked. ing.
- the internal pressure on the upper side of the main bag at the initial stage of deployment can be reduced, so even if the main bag is inflated and deployed in the state in which the main bag is inflated and deployed, the upper part in the chest of the occupant The load which the side and the neck receive from the upper side of the main bag can be reduced.
- the vehicle side airbag device is the vehicle side airbag device according to any one of the first to sixth aspects, wherein the communication hole that connects the inside of the main bag and the inside of the internal bag has the inside.
- the upper side of the inner bag is folded in half in the vehicle width direction in the folded state of the main bag.
- the inflating and deploying gas supplied from the inflator to the internal bag is supplied to the main bag through the communication holes formed on the upper side and the lower side of the internal bag.
- the deployment speed of the main bag can be increased.
- the communication hole on the upper side of the inner bag may be blocked until the folded part is expanded. it can.
- the upper side of the inner bag is folded in two in the vehicle width direction outside in the folded state of the main bag.
- the communication hole on the upper side of the inner bag can be closed until the upper side of the inner bag folded in the vehicle width direction outside in the folded state of the main bag is deployed.
- the communication hole on the upper side of the inner bag can be closed until the upper side of the inner bag folded in the vehicle width direction outside in the folded state of the main bag is deployed.
- the safety of the occupant when the side airbag is inflated and deployed in a state where the occupant is not seated at the regular seating position is improved more than before. be able to.
- FIG. 1 is a schematic side view showing a state in which a side airbag is inflated and deployed in a vehicle side airbag device according to a first embodiment of the present invention.
- FIG. 3 is a plan sectional view showing a partial configuration of a seat back on which the side airbag device is mounted, and is a view before the side airbag is inflated and deployed.
- FIG. 3 is a plan sectional view corresponding to FIG. 2 showing a state in which the side airbag is inflated and deployed, and is an enlarged plan sectional view showing a cut surface along the line AA in FIG. 1.
- It is a plane development view showing the state before sewing of the side airbag.
- It is a perspective view which shows the structure of the main panel which is a structural member of the side airbag, and an internal panel.
- FIG. 8 is a schematic vertical cross-sectional view showing a state in which the side airbag is folded at fold lines F6 and F7 in FIG. 7, corresponding to the position of line BB in FIG.
- a vehicle side airbag apparatus 10 (hereinafter simply referred to as a side airbag apparatus 10) according to a first embodiment of the present invention will be described with reference to FIGS.
- the arrow FR shown in FIG. 1 indicates the front of the vehicle
- the arrow UP indicates the upper side of the vehicle
- the arrow IN indicates the inner side in the vehicle width direction.
- the side airbag device 10 includes a door-side side portion 14A of a seat back 14 in a vehicle seat 12 (a side portion on the side door side (not shown): a vehicle). It is mounted on the outer side in the width direction.
- the seat back 14 is connected to the rear end portion of the seat cushion 16 so as to be tiltable, and a headrest 18 is connected to the upper end portion.
- the front direction, the upper direction, and the width direction of the vehicle seat 12 coincide with the front direction, the upper direction, and the width direction of the vehicle.
- the side airbag device 10 includes a side airbag 20 and an inflator 22 as gas supply means for supplying an inflating and deploying gas (hereinafter simply referred to as “gas”) into the side airbag 20.
- gas an inflating and deploying gas
- FIG. 2 the side airbag device 10 is unitized together with the inflator 22 and the like with the side airbag 20 folded, and is disposed inside the door side portion 14A.
- . 1 and 3 show a state where the side airbag 20 is inflated and deployed by the pressure of the gas supplied from the inflator 22 (inflated and deployed completed state).
- 2 is a wrap material that can be easily broken when the side airbag 20 is inflated and deployed.
- a seat bag pad (urethane pad) 26 covered with a seat skin 24 is disposed around the side airbag device 10.
- the seat skin 24 includes a front surface portion 28 that forms the front surface of the door-side side portion 14A, and a hood portion 30 that forms an outer surface in the vehicle width direction of the door-side side portion 14A. Is provided at the front end of the door side portion 14A.
- the sewing portion 32 extends in the seat bag height direction along the front edge portion of the door-side side portion 14A in a side view.
- the seat bag pad 26 receives the inflation pressure of the side airbag 20 and is split into the pad inner portion 34 and the pad outer portion 36.
- the seat skin 24 is configured to be cleaved at the sewing portion 32.
- the side airbag 20 is a so-called two-chamber side airbag, and includes a main bag 38 sewn in a bag shape.
- the interior of the main bag 38 is partitioned by a tether 39 into an occupant chest restraint chest chamber 40 and an occupant waist restraint waist chamber 42.
- An internal bag 46 (rectifying cloth) formed in a long bag shape is disposed in the chest chamber 40, and an inner tube 48 is integrally provided at the lower end of the internal bag 46. .
- the inner tube 48 protrudes into the waist chamber 42, and the inside of the inner bag 46 and the inside of the waist chamber 42 communicate with each other through the inside of the inner tube 48.
- a communication hole 50 gas flow path
- the inside of the internal bag 46 and the chest chamber 40 communicate with each other through the communication hole 50.
- the inflator 22 is accommodated in the internal bag 46.
- the inflator 22 is formed in a columnar shape, and is arranged in a state where the axial direction is along the height direction of the seat back 14.
- a pair of upper and lower stud bolts 52 protrude from the outer periphery of the inflator 22 toward the inner side in the seat width direction. These stud bolts 52 pass through the side bag 58 of the inner bag 46, the main bag 38 and the seat back frame 56, and the front end side is screwed into the nut 54. Thereby, the inflator 22 is fixed to the side frame 58 together with the side airbag 20.
- a side airbag ECU 60 and a side airbag sensor 62 mounted on the vehicle are electrically connected to the inflator 22 described above.
- the side airbag ECU 60 determines whether or not to operate the side airbag device 10 based on a detection signal from the side airbag sensor 62 when the automobile undergoes a side collision or rollover. If this determination is affirmed, a predetermined current is passed through the inflator 22. Thereby, the inflator 22 operates and gas is ejected from a gas ejection port (not shown) provided on the lower end side of the inflator 22.
- the gas ejected from the inflator 22 is supplied into the waist chamber 42 through the lower end opening of the inner tube 48 (see arrow G1 in FIG. 1), and at the same time, the chest chamber 40 through the communication hole 50 of the internal bag 46. (See arrow G2 in FIG. 1).
- the side airbag 20 is inflated and deployed between the occupant 64 seated at the normal seating position in the vehicle seat 12 and the side door 66.
- the lumbar chamber 42 is inflated and deployed between the lumbar portion of the occupant 64 and the door trim 68 of the side door 66, and the lumbar portion of the occupant 64 is restrained by the lumbar chamber 42.
- the chest chamber 40 is inflated and deployed between the chest of the occupant 64 and the door trim 68 of the side door 66, and the chest of the occupant 64 is restrained by the chest chamber 40.
- the gas outlet of the inflator 22 is arranged downward, the lumbar chamber 42 is configured to complete deployment to the chest chamber 40 early (preceding).
- the internal pressure of the lumbar chamber 42 is configured to be higher than the internal pressure of the chest chamber 40.
- the inner tube 48 When the internal pressure of the lumbar chamber 42 rises above a preset value, the inner tube 48 is crushed and closed. . As a result, the gas in the waist chamber 42 is prevented from flowing into the internal bag 46 via the inner tube 48 (reverse flow). That is, the inner tube 48 is configured to function also as a check valve that prevents gas from flowing into the inner bag 46 from the waist chamber 42.
- the door side side portion 14 ⁇ / b> A of the seat back 14 is positioned in front of the vehicle (outside of a normal seating position: out of position).
- the passenger 70 is indicated by a two-dot chain line.
- the occupant 70 is, for example, a small occupant such as a child.
- FIG. 4 is a developed plan view showing a state before the side airbag 20 is sewn.
- the side airbag 20 is formed by sewing a main panel 72 and an inner panel 74.
- the main panel 72 is formed by sewing a lower end portion of a base fabric 76 for forming the chest chamber 40 and an intermediate portion in the vertical direction of the base fabric 78 for forming the waist chamber 42 at the sewing portion S1. ing.
- a reinforcing cloth 80 is sewn at the sewing portion S2.
- the inner panel 74 is constituted by a single long base cloth 82.
- the base fabric 82 has one end in the longitudinal direction disposed in the waist chamber 42 and the other end in the longitudinal direction disposed in the chest chamber 40.
- One end in the longitudinal direction of the base cloth 82 is cut out in a triangle corresponding to the shape of the lower end side of the main panel 72, and a reinforcing cloth 84 is sewn at the sewing part S3 at the one end in the longitudinal direction.
- the inner panel 74 is folded in half along the central fold line F1, and the inner portion 74A and the outer portion 74B of the inner panel 74 are overlapped. At the same time, the inner portion 74A and the outer portion 74B are sewn at the sewing portions S4 and S5 (see FIGS. 4 and 6). Thereby, the inner panel 74 is sewn into a long cylindrical shape. Moreover, the cylindrical inflator insertion part 86 (refer FIG. 1 and FIG. 6) is formed by sewing the inner part 74A and the outer part 74B in sewing part S6, S7 (refer FIG.4 and FIG.6). .
- the base fabric 78 is folded in half along the center fold line F2, and the upper end portion of the base fabric 78 is sewn at the sewing portions S11 and S12 (see FIGS. 4 and 6), whereby the tether 39 is formed.
- the tether 39 is sewn with the middle portion in the vertical direction of the inner bag 46 by the sewing portions S11 and S12. Thereby, the position shift of the intermediate portion in the vertical direction of the inner bag 46 with respect to the tether 39 is prevented.
- the communication hole 50 is formed between the sewing portion S4 and the sewing portion S11 by omitting a part of the sewing.
- the main panel 72 is folded in two along the central broken line F2, and the inner panel 74 is sandwiched between the inner part 72A and the outer part 72B of the main panel 72 on the central broken line F2 side.
- the inner portion 72A and the outer portion 72B are overlapped.
- the inner portion 72A and the outer portion 72B are sewn at the sewing portions S8, S9, and S10 (see FIGS. 4 and 6).
- the main panel 72 is sewn in a bag shape to form the main bag 38, and the interior of the main bag 38 is partitioned into an upper chest chamber 40 and a lower waist chamber 42 by the tether 39.
- the upper end and the lower end of the inner panel 74 are sewn with the main panel 72 at the sewing portions S8 and S10 to form a long bag-like inner bag 46 and an inner tube 48.
- the upper end opening of the inner tube 48 is disposed close to the lower end opening of the inflator insertion portion 86.
- vent holes 88 and 90 are formed by partially omitting sewing between the sewing portion S8 and the sewing portion S9 and between the sewing portion S9 and the sewing portion S10. .
- the chest chamber 40 and the lumbar chamber 42 communicate with the outside of the side airbag 20 through the vent holes 88 and 90. For this reason, the gas supplied to the chest chamber 40 and the waist chamber 42 is discharged out of the side airbag 20 through the vent holes 88 and 90. Thereby, it is prevented that the internal pressure of the chest chamber 40 and the waist chamber 42 increases too much.
- the above-described sewing is performed by plane sewing.
- the side airbag 20 sewed as described above is supplied with the gas from the inflator 22 through the internal bag 46 to the chest chamber 40 and the waist chamber 42, thereby the main bag 38 and the internal bag 46. Expands and expands. As a result, the seat bag pad 26 is cleaved into the inner portion 34 and the outer portion 36, and the seat skin 24 is cleaved at the sewing portion 32. As a result, as shown in FIG. 3, an opening 92 is formed on the front side of the door side portion 14A, and the main bag 38 is inflated and deployed to the vehicle front side of the door side side portion 14A via the opening 92. To do.
- the main bag 38 has a front-rear dimension L1 on the chest chamber 40 side (upper side) and a front-rear dimension on the waist chamber 42 side (lower side) when inflated and deployed.
- the shape is set to be smaller than L2.
- the inner bag 46 inflates and expands vertically in the rear end side of the main bag 38.
- the inner bag 46 is formed so that the front edge 46A at the time of inflating and deploying extends along the front edge 14A1 of the door side portion 14A.
- the shape is set so as to be located on the vehicle rear side. Specifically, as shown in FIG.
- the inner bag 46 is shaped so as to be positioned behind the opening 92 in the vehicle rear side, that is, in the door side part 14 ⁇ / b> A when inflated and deployed.
- the internal bag 46 is formed so as to be inflated and deployed on the vehicle rear side with respect to the imaginary line X connecting the front end of the front surface portion 28 and the front end of the hook portion 30 in a state where the sewing portion 32 is cleaved. .
- the internal bag 46 is configured such that the communication hole 50 is positioned on the lower side when inflated and deployed, and the gas in the internal bag 46 passes through the communication hole 50 to the chest chamber. 40 is supplied to the lower side. However, since the upper side of the inner bag 46 is closed by the sewing portions S4 and S8, gas does not flow out from the upper side of the inner bag 46.
- the side airbag ECU 60 activates the inflator 22.
- the supplied gas is supplied to the main bag 38 while the internal bag 46 is inflated and deployed.
- the main bag 38 is inflated and deployed, and the sewing portion 32 of the seat bag pad 26 and the seat cover 24 is subjected to the inflation pressure of the main bag 38 and the inner bag 46 and is cleaved.
- an opening 92 is formed on the front side of the door side portion 14A, and the main bag 38 is inflated and deployed to the vehicle front side of the door side side portion 14A through the opening 92.
- the internal pressure of the internal bag 46 is higher than the internal pressure of the main bag 38, but the internal bag 46 has a front edge portion 14 ⁇ / b> A ⁇ b> 1 of the door-side side portion 14 ⁇ / b> A in a side view. It is comprised so that it may be located in the vehicle rear side rather than. For this reason, as shown in FIG. 1, even when the main bag 38 and the inner bag 46 are inflated and deployed in a state where the occupant 70 is positioned in front of the vehicle on the door side side portion 14A other than the normal seating position, It is possible to prevent or effectively suppress the occupant 70 from receiving a load from the high-pressure internal bag 46. Thereby, the safety
- the inner bag 46 that has a higher pressure than the main bag 38 is configured to be positioned on the vehicle rear side with respect to the front edge portion 14A1 of the door-side side portion 14A in a side view when inflated and deployed. Yes. Accordingly, the occupant 70 can be prevented or effectively prevented from receiving a load from the high-pressure internal bag 46, so that the robustness in the OOP performance can be improved without lowering the rise rate and output of the inflator. it can.
- the chest chamber 40 in which the inner bag 46 is disposed is configured to have a lower pressure than the waist chamber 42. Therefore, it is preferable.
- the inner bag 46 is shaped so as to be positioned on the vehicle rear side with respect to the opening 92 when inflated and deployed. Therefore, even when the main bag 38 and the internal bag 46 are inflated and deployed in a state where the occupant 70 is positioned in front of the vehicle in the opening 92, the occupant 70 is prevented or effectively prevented from receiving a load from the high-pressure internal bag 46. Can be suppressed.
- the inner bag 46 is inflated and deployed in a range that does not protrude into the door side side portion 14A, that is, the outside of the door side side portion 14A, so regardless of the seating position of the occupant 70 (occupant 64), It is possible to prevent or effectively suppress the occupant 70 from receiving a load from the high-pressure internal bag 46.
- the inner tube 48 is crushed and closed. Accordingly, the backflow of gas from the lumbar chamber 42 to the inner bag 46 can be prevented and the internal pressure of the lumbar chamber 42 can be maintained at a high level, so that the occupant has higher impact resistance than the chest of the occupant 70.
- the 70 waists can be well restrained by the waist chamber 42.
- the main bag 38 is inflated and deployed so that the front-rear dimension L1 on the chest chamber 40 side is smaller than the front-rear dimension L2 on the waist chamber 42 side. For this reason, even when the main bag 38 is inflated and deployed while the occupant 70 is positioned in the inflating and deploying direction of the main bag 38, the load on the upper side and the neck of the occupant 70 from the upper side of the main bag 38 is received. Can be reduced.
- the gas supplied from the inflator 22 to the internal bag 46 is supplied to the main bag 38 through the communication hole 50 formed on the lower side of the internal bag 46.
- the side is occluded.
- FIG. 7 is a side view showing a state after sewing of the side airbag 100, which is a constituent member of the vehicle side airbag device according to the second embodiment of the present invention.
- the side airbag 100 has basically the same configuration as the side airbag 20 according to the first embodiment, but the sewing bag S4 is omitted on the upper side of the inner bag 46, so that the inner bag A communication hole 102 is formed on the upper side of 46. Therefore, the gas supplied from the inflator 22 into the internal bag 46 is supplied into the chest chamber 40 through the communication hole 50 on the lower side of the internal bag 46 and the communication hole 102 on the upper side. Thereby, the deployment speed of the chest chamber 40 can be increased.
- the side airbag 100 when the side airbag 100 is folded, first, after the side airbag 100 is folded in a bellows along the folding lines F3, F4, and F5 in FIG. 7, the folding line F6 in FIG. , The upper side and the lower side of the side airbag 100 are folded along F7.
- the lower end side of the main bag 38 is folded toward the inside of the main bag 38 in a substantially W-shaped cross section, while the upper portion of the side airbag 100 is On the side, the main bag 38 and the inner bag 46 are folded in two in the vehicle width direction on the lower side of the communication hole 102 (see arrow T in FIG. 8).
- the communication hole 102 on the upper side of the inner bag 46 is closed.
- the gas in the inner bag 46 passes through the communication hole 102 on the upper side until the folded portion on the upper side of the side airbag 100 is deployed by supplying gas into the inner bag 46. 40, it flows into the chest chamber 40 only from the communication hole 50 on the lower side.
- the upper side of the side airbag 100 is folded in half in the vehicle width direction outside, but there is a margin in the space between the side airbag 100 and the door trim 66 on the outside in the vehicle width direction. It is possible to smoothly develop the folded portion.
- the upper side of the inner bag 46 is folded in half in the vehicle width direction together with the upper side of the main bag 36.
- the present invention is not limited to this, and the upper side of the inner bag is the main bag. It may be configured to be folded inward in the vehicle width direction together with the upper side of the.
- the main bag 36 is shaped so that the upper-side longitudinal dimension L1 is smaller than the lower-side longitudinal dimension L2 when the inflated and deployed state is viewed in a side view.
- the present invention is not limited to this, and the shape of the main bag 36 can be appropriately changed.
- the inner tube 48 functions as a check valve.
- the present invention is not limited to this, and the inner tube may not function as a check valve.
- the tether 39 is formed by sewing the upper end portion of the base fabric 78 constituting the waist chamber 42 at the sewing portions S11 and S12.
- the tether may be formed by sewing the lower end portion of the base fabric 76 constituting the chest chamber 40. In this case, the upper end portion of the base fabric 78 is sewn to the middle portion in the vertical direction of the base fabric 76.
- the tether may be formed by a base fabric separate from the base fabrics 76 and 78, or the chest chamber and the waist chamber may be partitioned by a sewing portion (seam).
- the interior of the main bag 36 is divided into the chest chamber 40 and the waist chamber 42.
- the present invention is not limited to this, for example, the waist chamber via the chest chamber.
- a configuration in which a shoulder chamber partitioned for restraining the occupant's shoulder is provided on the opposite side a configuration in which the main bag is a so-called three-chamber side airbag.
- a configuration in which the interior of the main bag is not partitioned a configuration in which the main bag is a so-called one-chamber side airbag may be employed.
- the inner bag is set to the chest chamber and the waist chamber, and a plurality of the inner bags are spaced apart from each other in the vertical direction. It is preferable to form the communication hole.
- the inner bag 46 is configured to be positioned on the vehicle rear side with respect to the opening 92 of the door side portion 14A when inflated and deployed.
- the inner bag is positioned on the vehicle rear side of at least one of the two edges of the opening (in the above embodiments, the front end of the front surface 28 of the seat skin 24 and the front end of the stile 30 in the above embodiments). do it.
- each said embodiment it was set as the structure by which the communication hole 50 was formed in the lower part side of the internal bag 46 by omitting sewing between the sewing part S4 and the sewing part S11 of the internal bag 46.
- the present invention is not limited to this, and a communication hole may be formed by cutting a part of the inner bag. This also applies to the communication hole 102 (communication hole on the upper side of the inner bag) in the second embodiment.
- the entire inner bag 46 is configured to be positioned on the vehicle rear side with respect to the front edge portion 14A1 of the door side side portion 14A in a side view when inflated and deployed.
- the present invention is not limited thereto.
- the inner bag is not limited as long as at least the portion formed in the bag shape is located on the vehicle rear side with respect to the front edge of the side portion of the seat back in a side view when inflated and deployed.
- a part of the periphery of the communication hole may be located on the vehicle front side with respect to the front edge portion of the side portion.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
以下、図1~図6を用いて、本発明の第1実施形態に係る車両用サイドエアバッグ装置10(以下、単にサイドエアバッグ装置10という)について説明する。なお、図1に示される矢印FRは車両前方を示し、矢印UPは車両上方を示し、矢印INは車両幅方向内方を示している。
次に、上述したサイドエアバッグ20の構成について詳細に説明する。
図4には、サイドエアバッグ20の縫製前の状態を示す平面展開図が示されている。このサイドエアバッグ20は、主パネル72と内部パネル74とが縫製されることにより形成されている。主パネル72は、胸部チャンバ40を形成するための基布76の下端部と、腰部チャンバ42を形成するための基布78の上下方向中間部とが縫製部S1において縫製されることにより形成されている。この主パネル72の下縁側には、補強布80が縫製部S2において縫製されている。一方、内部パネル74は、長尺な一枚の基布82によって構成されている。この基布82は、長手方向一端側が腰部チャンバ42内に配置され、長手方向他端側が胸部チャンバ40内に配置される。基布82の長手方向一端部は、主パネル72の下端側の形状に対応して三角形に切欠かれており、当該長手方向一端部には、補強布84が縫製部S3において縫製されている。
一方、内部バッグ46は、主バッグ38の後端側において縦長に膨張展開する。この内部バッグ46は、膨張展開時における前方縁部46Aがドア側サイド部14Aの前方縁部14A1に沿うように形成されており、膨張展開時に側面視で前方縁部46Aが前方縁部14A1よりも車両後方側に位置するように形状設定されている。詳細には、内部バッグ46は、図3に示されるように、膨張展開時に前記開口部92よりも車両後方側、すなわちドア側サイド部14A内に位置するように形状設定されている。換言すれば、内部バッグ46は、縫製部32が開裂した状態での前面部28の前端とかまち部30の前端とを結ぶ仮想線Xよりも車両後方側で膨張展開するように形成されている。
次に、本第1実施形態の作用及び効果について説明する。
上記構成のサイドエアバッグ装置10では、車両が側面衝突や横転等したことをサイドエアバッグセンサ62が検知すると、サイドエアバッグECU60がインフレータ22を作動させる。これにより、インフレータ22から内部バッグ46にガスが供給されると、内部バッグ46が膨張展開しつつ供給されたガスを主バッグ38へ供給する。これにより、主バッグ38が膨張展開し、シートバッグパッド26及びシート表皮24の縫製部32が主バッグ38及び内部バッグ46の膨張圧を受けて開裂する。これにより、ドア側サイド部14Aの前面側に開口部92が形成され、当該開口部92を介して主バッグ38がドア側サイド部14Aの車両前方側へ膨張展開する。
図7には、本発明の第2の実施形態に係る車両用サイドエアバッグ装置の構成部材であるサイドエアバッグ100の縫製後の状態を示す側面図が示されている。このサイドエアバッグ100は、前記第1実施形態に係るサイドエアバッグ20と基本的に同様の構成とされているが、内部バッグ46の上部側において縫製部S4が省略されることにより、内部バッグ46の上部側に連通穴102が形成されている。このため、インフレータ22から内部バッグ46内に供給されたガスは、内部バッグ46の下部側の連通穴50および上部側の連通穴102を介して胸部チャンバ40内に供給される。これにより、胸部チャンバ40の展開速度を速くすることができる。
上記第2実施形態では、内部バッグ46の上部側が主バッグ36の上部側とともに車両幅方向外側に二つ折りにされた構成にしたが、本発明はこれに限らず、内部バッグの上部側が主バッグの上部側とともに車両幅方向内側に二つ折りにされた構成にしてもよい。
Claims (9)
- シートバッグのサイド部内に配設されたサイドフレームに支持され、膨張展開用ガスを供給するインフレータと、
前記サイド部内に折り畳み状態で格納され、前記膨張展開用ガスが供給された際に前記サイド部の車両前方側へ膨張展開する主バッグ、及び、前記主バッグ内に配設され、前記膨張展開用ガスが供給されることにより膨張展開しつつ供給されたガスを前記主バッグへ供給すると共に、膨張展開時に側面視で前記サイド部の前方縁部よりも車両後方側に位置する内部バッグを有するサイドエアバッグと、
を備えた車両用サイドエアバッグ装置。 - 前記サイド部の前部側には、前記サイドエアバッグの膨張圧を受けて開裂するシート表皮の縫製部が設けられており、当該縫製部が開裂することにより前記サイド部の前面側に前記主バッグを膨張展開させるための開口部が形成されると共に、前記内部バッグは、膨張展開時に前記開口部よりも車両後方側に位置するように形状設定されている請求項1に記載の車両用サイドエアバッグ装置。
- 前記内部バッグは、前記サイド部内で膨張展開するように形状設定されている請求項1又は請求項2に記載の車両用サイドエアバッグ装置。
- 前記主バッグの内部は、乗員胸部拘束用の胸部チャンバと乗員腰部拘束用の腰部チャンバとに区画されており、前記内部バッグは、前記胸部チャンバに設けられ、連通穴を介して前記胸部チャンバと連通されると共に、インナチューブを介して前記腰部チャンバと連通されている請求項1~請求項3の何れか1項に記載の車両用サイドエアバッグ装置。
- 前記インナチューブは、前記腰部チャンバの内圧が設定値以上に上昇することにより閉塞する逆止弁を構成している請求項4に記載の車両用サイドエアバッグ装置。
- 前記主バッグは、膨張展開状態を側面視で見た場合に、上部側の前後方向寸法が下部側の前後方向寸法よりも小さくなるように形状設定されている請求項1~請求項5の何れか1項に記載の車両用サイドエアバッグ装置。
- 前記主バッグ内と前記内部バッグ内とを連通させた連通穴が前記内部バッグの下部側に形成されており、前記内部バッグの上部側は閉塞されている請求項1~請求項6の何れか1項に記載の車両用サイドエアバッグ装置。
- 前記主バッグ内と前記内部バッグ内とを連通させた連通穴が前記内部バッグの上部側及び下部側に形成されており、前記内部バッグの上部側は、前記主バッグの折り畳み状態において車両幅方向に二つ折りにされている請求項1~請求項6の何れか1項に記載の車両用サイドエアバッグ装置。
- 前記内部バッグの上部側は、前記主バッグの折り畳み状態において車両幅方向外側に二つ折りにされている請求項8に記載の車両用サイドエアバッグ装置。
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CN201280068193.3A CN104093606B (zh) | 2012-02-01 | 2012-02-01 | 车辆用侧面安全气囊装置 |
JP2013556144A JP5800035B2 (ja) | 2012-02-01 | 2012-02-01 | 車両用サイドエアバッグ装置 |
EP12867392.8A EP2810831B1 (en) | 2012-02-01 | 2012-02-01 | Vehicle side airbag device |
US14/374,347 US9056591B2 (en) | 2012-02-01 | 2012-02-01 | Side airbag for vehicle |
PCT/JP2012/052281 WO2013114591A1 (ja) | 2012-02-01 | 2012-02-01 | 車両用サイドエアバッグ装置 |
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JP2014159265A (ja) * | 2013-01-25 | 2014-09-04 | Toyoda Gosei Co Ltd | サイドエアバッグ装置 |
KR20160027125A (ko) | 2013-07-31 | 2016-03-09 | 도요타 지도샤(주) | 차량용 사이드 에어백 장치 및 차량용 시트 |
WO2015015912A1 (ja) | 2013-07-31 | 2015-02-05 | トヨタ自動車株式会社 | 車両用サイドエアバッグ装置及び車両用シート |
US9969348B2 (en) | 2013-07-31 | 2018-05-15 | Toyota Jidosha Kabushiki Kaisha | Vehicle side airbag device and vehicle seat |
CN104736396A (zh) * | 2013-09-27 | 2015-06-24 | 丰田自动车株式会社 | 车辆用侧面安全气囊装置以及车辆用座椅 |
JP5804214B2 (ja) * | 2013-09-27 | 2015-11-04 | トヨタ自動車株式会社 | 車両用サイドエアバッグ装置及び車両用シート |
WO2015045613A1 (ja) * | 2013-09-27 | 2015-04-02 | トヨタ自動車株式会社 | 車両用サイドエアバッグ装置及び車両用シート |
JP2015104973A (ja) * | 2013-11-29 | 2015-06-08 | 豊田合成株式会社 | サイドエアバッグ装置 |
JP2015189428A (ja) * | 2014-03-28 | 2015-11-02 | 豊田合成株式会社 | サイドエアバッグ装置 |
JP2016068713A (ja) * | 2014-09-29 | 2016-05-09 | トヨタ自動車株式会社 | 車両用サイドエアバッグ装置 |
US9771045B2 (en) | 2014-09-29 | 2017-09-26 | Toyota Jidosha Kabushiki Kaisha | Vehicle side airbag device |
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JPWO2017057073A1 (ja) * | 2015-09-29 | 2018-04-26 | オートリブ ディベロップメント エービー | サイドエアバッグ装置 |
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CN108136991A (zh) * | 2015-09-29 | 2018-06-08 | 奥托立夫开发公司 | 侧面安全气囊装置 |
US10518738B2 (en) | 2015-09-29 | 2019-12-31 | Autoliv Development Ab | Side airbag device |
CN108136991B (zh) * | 2015-09-29 | 2020-06-09 | 奥托立夫开发公司 | 侧面安全气囊装置 |
JP2017088130A (ja) * | 2015-11-17 | 2017-05-25 | 三菱自動車工業株式会社 | 車両のサイドエアバッグ装置 |
US10668885B2 (en) | 2017-01-10 | 2020-06-02 | Toyota Jidosha Kabushiki Kaisha | Side airbag device for rear seat |
JP2017144996A (ja) * | 2017-05-31 | 2017-08-24 | トヨタ自動車株式会社 | 車両用サイドエアバッグ装置 |
WO2020071099A1 (ja) * | 2018-10-03 | 2020-04-09 | オートリブ ディベロップメント エービー | 車両用シート |
JPWO2020071099A1 (ja) * | 2018-10-03 | 2021-09-02 | オートリブ ディベロップメント エービー | 車両用シート |
JP7078742B2 (ja) | 2018-10-03 | 2022-05-31 | オートリブ ディベロップメント エービー | 車両用シート |
US11358555B2 (en) | 2018-10-03 | 2022-06-14 | Autoliv Development Ab | Vehicle seat |
Also Published As
Publication number | Publication date |
---|---|
EP2810831A1 (en) | 2014-12-10 |
JP5800035B2 (ja) | 2015-10-28 |
US9056591B2 (en) | 2015-06-16 |
JPWO2013114591A1 (ja) | 2015-05-11 |
EP2810831A4 (en) | 2015-09-02 |
CN104093606A (zh) | 2014-10-08 |
US20150014970A1 (en) | 2015-01-15 |
CN104093606B (zh) | 2017-04-12 |
EP2810831B1 (en) | 2018-05-09 |
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