WO2015020052A1 - 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
- WO2015020052A1 WO2015020052A1 PCT/JP2014/070615 JP2014070615W WO2015020052A1 WO 2015020052 A1 WO2015020052 A1 WO 2015020052A1 JP 2014070615 W JP2014070615 W JP 2014070615W WO 2015020052 A1 WO2015020052 A1 WO 2015020052A1
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- WIPO (PCT)
- Prior art keywords
- vehicle
- side airbag
- panel
- baffle
- joined
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- 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
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
-
- 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
- B60R21/232—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
- B60R21/237—Inflatable members characterised by the way they are folded
-
- 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
- B60R21/239—Inflatable members characterised by their venting means
-
- 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
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
-
- 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
- B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
- B60R2021/0032—Position of passenger
-
- 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
- B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
- B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
- B60R2021/0044—Chest
-
- 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
- B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
- B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
- B60R2021/0058—Shoulders
-
- 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
Definitions
- the present invention is a three-dimensional shape that secures a thickness in the vehicle width direction by providing a baffle (partition) made of, for example, a belt-shaped member inside the side airbag and rationally arranging the baffle.
- a baffle partition
- a side airbag device for a vehicle having a chamber (bag region partitioned by a partition) corresponding to the shoulder, waist and chest of an occupant and which can constitute a highly productive side airbag with a small number of parts About.
- Patent Documents 1 and 2 are known as side airbag devices for vehicles.
- the “side airbag device for automobile” of Patent Document 1 obtains an automobile side airbag device capable of achieving both an improvement in initial restraint performance by a side airbag and a reduction in load on an occupant's chest with a simple configuration. Therefore, in this side airbag device, the vent hole portion is formed by partially interrupting the sewing portion between the main panel and the side panel. Moreover, the flap provided in the main panel and the side panel is inserted into the chest chamber from the vent hole. These flaps close the vent hole portion by the internal pressure of the chest chamber at least until the side airbag is inflated and deployed between the occupant and the door trim. On the other hand, when the chest chamber is compressed between the occupant and the door trim, when the internal pressure of the chest chamber rises, the flap is pushed out of the airbag body and the vent hole portion is opened. .
- the “side airbag device for automobile” in Patent Document 2 is to obtain an automobile side airbag device that can reduce the number of panels constituting the side airbag.
- a bag-like airbag main body is formed by folding one panel in half and sewing the outer peripheral edge.
- the one panel is partially folded and sewn to form a tether portion that divides the interior of the airbag main body into a chest chamber and a waist chamber.
- the vehicle side airbag device includes a three-dimensional side airbag that can appropriately secure the thickness in the vehicle width direction. Further, in the vehicle side airbag device, it is preferable that the side airbag is formed with a chamber capable of appropriately receiving the occupant's shoulder, waist, and chest to enhance the occupant protection performance. Furthermore, it is desired to configure a side airbag having the above-described functionality with a high number of parts and high productivity.
- a baffle is provided inside the side airbag, and the baffle is rationally arranged to provide a three-dimensional shape that secures a thickness in the vehicle width direction.
- An object of the present invention is to provide a vehicle side airbag device that includes a chamber corresponding to the shoulder, waist, and chest of an occupant and that can constitute a highly productive side airbag with a small number of parts.
- a side airbag device for a vehicle is a side air that is built in a seat back and expands and inflates from the rear of the vehicle toward the front of the vehicle into the gap between the occupant and the side of the vehicle by introducing inflator gas.
- a side airbag device for a vehicle having a bag wherein the side airbag is formed by joining outer peripheral edges of a vehicle inner panel and a vehicle outer panel facing each other with an outer peripheral seam line. Is formed with three chambers, a waist restraint chamber, a shoulder restraint chamber, and a chest restraint chamber, and an inflator for inflator gas ejection is provided at the vehicle rear portion inside the side airbag.
- the main part of the bag is at least one of the shoulder restraining chamber and the waist restraining chamber.
- the side airbag is attached to the seat back so that a vehicle rear portion of the main part is inflated inside the seat back, and the three chambers are divided by a first baffle and a second baffle.
- the first baffle is formed in a strip shape having a width in the vehicle width direction, extends in the vehicle front-rear direction inside the side airbag, and a rear end in the length direction is joined to a rear edge of the side airbag.
- the second baffle is formed in a belt shape having a width in the vehicle width direction, extends in the vehicle vertical direction inside the side airbag, and is located at a baffle overlap portion set at an intermediate position of the second baffle.
- the front end in the length direction of the first baffle is connected together with the vehicle inner panel and the vehicle outer panel, and both ends of the second baffle are joined to the outer peripheral edge of the side airbag. And wherein the door.
- an angle formed by the second baffle and the first baffle on the side facing the inflator is set to an acute angle. It is desirable that a gap is formed between the front end of the first baffle in the length direction and the second baffle, and the gap constitutes an internal vent hole.
- the first baffle is formed of a single panel material, and both side edges are joined to the vehicle inner panel and the vehicle outer panel, respectively, and the rear end in the length direction is simultaneously joined to the outer peripheral seam line. Is desirable.
- the second baffle is formed of a single panel material, and both side edges are joined to the vehicle inner panel and the vehicle outer panel, respectively, and at least from the baffle overlap portion toward the upper side of the side airbag. It is preferable that the extended upper end in the length direction is simultaneously joined to the outer circumferential seam line.
- the second baffle is formed of a single panel material, and both side edges are joined to the vehicle inner panel and the vehicle outer panel, respectively, and at least from the baffle overlap position to the lower side of the side airbag. It is desirable that the lower end in the length direction extending toward the outer periphery seam line is simultaneously joined to the outer circumferential seam line.
- the first baffle includes at least two panel pieces having substantially the same length and substantially the same width, and the first baffle is disposed between one side edge of the panel pieces between the vehicle inner panel and the vehicle outer panel.
- the other side edges of the panel pieces of the first baffle are joined to the vehicle inner panel and the vehicle outer panel, respectively, and the rear end of the first baffle in the length direction is formed.
- the second baffle includes at least two panel pieces having substantially the same length and the same width, and the second baffle is disposed between one side edge of the panel pieces between the vehicle inner panel and the vehicle outer panel.
- the other side edges of the panel pieces of the second baffle are joined to the vehicle inner panel and the vehicle outer panel, respectively, and at least the baffle over of the second baffle is formed. It is desirable that the upper end in the length direction extending from the lap location toward the upper side of the side airbag is simultaneously joined to the outer peripheral seam line.
- the second baffle includes at least two panel pieces having substantially the same length and substantially the same width, and the second baffle is provided between the vehicle inner panel and the vehicle outer panel.
- a flexible sleeve having openings at both ends is provided inside the side airbag so as to surround the inflator and pass through the first baffle, and the flexible sleeve is partitioned by the first baffle. It is desirable to prevent the inflator gas from flowing out toward the other side by being deformed by the inflator gas flowing into one of the shoulder restraining chamber and the waist restraining chamber.
- the inflator is cylindrical, and a plurality of gas ejection holes are arranged in the circumferential direction in the vicinity of one end at both ends in the longitudinal direction of the inflator, and a connector for supplying an ignition signal is provided at the other end.
- the vehicle rear portion of the side airbag is connected to the inside of the side airbag so that the connector is exposed to the outside of the side airbag and the gas ejection hole is disposed inside the side airbag. It is preferable that an opening connecting the outside is provided, and the inflator is attached through the opening.
- the vehicle side airbag device is formed to include a vehicle inner panel body and a vehicle outer panel body, and the inflator gas is introduced into the vehicle interior so that the rear side of the vehicle is between the occupant and the vehicle side portion.
- Vehicle side airbag device having a side airbag that expands and inflates toward the front of the vehicle from the front side to the rear end of the side airbag in the vehicle front-rear direction.
- Front side upper and lower partitions formed at a distance from the rear end, and formed in the side airbag in the vehicle front-rear direction, from the rear end to the front end of the side airbag, and at a distance from the front end
- a rear side upper and lower partition part including an overlap part partially facing the front side upper and lower partition part and the upper part and the upper part inside the side airbag,
- An inflator that is disposed behind the side airbag in the vehicle front-rear direction and introduces inflator gas into the upper bag region, and is provided between the overlap portion and the front upper and lower partition portions from the upper bag region.
- the front side upper and lower partition part is formed to continuously extend from the rear end in the vehicle front-rear direction toward the upper side in the vehicle vertical direction, includes an upper extension part that reaches the upper end of the side airbag, and the upper bag region is
- the upper extension bag region is divided into an upper front bag region and an upper rear bag region, and inflator gas is introduced into the upper extension bag region from the upper rear bag region to the upper front bag region. It is preferable that a gas introduction path is formed.
- the front side upper and lower partition portions are formed of a first belt-like member, and both side edges in the width direction of the first belt-like member are integrally joined to the vehicle inner panel body and the vehicle outer panel body, respectively. It is desirable that the front end of the vehicle is integrally joined to the vehicle inner panel body and the vehicle outer panel body.
- the rear side upper and lower partition portions are formed of a second band member, and both side edges in the width direction of the second band member are integrally joined to the vehicle inner panel body and the vehicle outer panel body, respectively, and the second band member
- the rear end is preferably joined integrally with the vehicle inner panel body and the vehicle outer panel body.
- the vehicle interior panel body and the vehicle exterior panel body include an upper panel portion and a lower panel portion, and the upper panel portion and the lower panel portion overlap each other with a lower portion of the upper panel portion and an upper portion of the lower panel portion. It is desirable to join together.
- Both side edges of the first strip member are joined to the lower panel portion in such a form that the first strip member straddles the upper portion of the lower panel portion included in each of the vehicle inner panel body and the vehicle outer panel body.
- the both side edges of the second strip member are joined to the upper panel portion integrally with the lower panel portion and the first strip member in such a form that the second strip member is sandwiched between upper portions of the lower panel portion. It is preferred that
- a mountain fold is formed in the upper portion of the lower panel portion by upward folding, and the first strip member is overlapped with the lower panel portion in a form straddling the mountain fold portion, and the second strip member It is desirable that both side edges are joined to the upper panel portion integrally with the lower panel portion and the first belt member in a form in which the second band member is sandwiched by the mountain fold portion of the lower panel portion.
- the first belt-like member has a mountain fold portion formed by downward folding, and both side edges of the second belt member are sandwiched between the mountain fold portions of the first belt member.
- the first belt-like member is integrally joined to the vehicle inner panel body and the vehicle outer panel body.
- a baffle is provided inside the side airbag, and the baffle is rationally arranged, thereby ensuring a thickness in the vehicle width direction, A chamber corresponding to the shoulder, waist and chest of the occupant can be provided, and a highly productive side airbag can be configured with a small number of parts.
- FIG. 1 is a side view illustrating a schematic configuration of a first embodiment of a vehicle side airbag device according to the present invention, in which first and second baffles are drawn with solid lines.
- FIG. 2 is a cross-sectional view taken along line AA-AA in FIG.
- FIG. 2 is a cross-sectional view taken along line AB-AB in FIG.
- FIG. 2 is a cross-sectional view taken along the line AC-AC in FIG.
- FIG. 4 is a cross-sectional view corresponding to FIG. 2 or FIG. 3 in a state in which the side airbag of the vehicle side airbag device shown in FIG. 1 is inflated.
- FIG. 6 It is the schematic side view which drawn the 1st and 2nd baffle by the continuous line which shows a mode that the side airbag of the vehicle side airbag apparatus shown in FIG. 1 expand
- FIG. 6 it is an AD direction arrow directional view.
- FIG.2 and FIG.3 shows the 1st modification of 1st Embodiment of the vehicle side airbag apparatus concerning this invention.
- FIG. 1 shows the 2nd modification of 1st Embodiment of the vehicle side airbag apparatus concerning this invention.
- FIG. 1 which shows the 3rd modification of 1st Embodiment of the vehicle side airbag apparatus concerning this invention.
- FIG. 13 is a cross-sectional view taken along line A1-A1 in FIG.
- FIG. 13 is a cross-sectional view taken along line A2-A2 in FIG.
- FIG. 13 is a cross-sectional view taken along line A3-A3 in FIG.
- FIG. 13 is a cross-sectional view taken along line A1-A1 in FIG.
- FIG. 13 is an enlarged perspective view of a main part in the vicinity of the A1-A1 cross section showing a state in which the inflator gas flows in a gas passage provided in the vehicle side airbag device shown in FIG. It is a principal part expanded sectional view which shows a mode that the gas channel shown in FIG. 17 was blocked. It is a side view which shows the modification of 2nd Embodiment of the side airbag apparatus for vehicles concerning this invention. It is explanatory drawing explaining the assembly
- FIG. 20 is a cross-sectional view taken along line A4-A4 in FIG. It is a side view which shows 3rd Embodiment of the side airbag apparatus for vehicles concerning this invention.
- FIG. 23 is a cross-sectional view taken along line A8-A8 in FIG.
- FIG. 22 is a cross-sectional view taken along line A5-A5 in FIG.
- FIG. 22 is a cross-sectional view taken along line A6-A6 in FIG.
- FIG. 23 is a cross-sectional view taken along line A7-A7 in FIG.
- It is sectional drawing which shows the modification of the junction structure of the overlap part shown in FIG. It is sectional drawing which shows the other modification of the junction structure of the overlap part shown in FIG. It is sectional drawing which shows the other modification of the junction structure of the overlap part shown in FIG. It is a side view which shows 4th Embodiment of the side airbag apparatus for vehicles concerning this invention.
- FIG. 31 is a cross-sectional view taken along line A9-A9 in FIG.
- FIG. 31 is a cross-sectional view taken along line A10-A10 in FIG.
- FIG. 15 is a cross-sectional view showing still another modified example of the overlapping structure shown in FIG. 14.
- FIG. 15 is a cross-sectional view showing still another modified example of the overlapping structure shown in FIG. 14.
- FIG. 15 is a cross-sectional view showing still another modified example of the overlapping structure shown in FIG. 14.
- a line A8-A8 in FIG. 22 showing a modification in the case of forming the upward extension from the front upper and lower partition without using the first belt-like member, with respect to the overlapping part joining structure shown in FIG. It is sectional drawing corresponding to an arrow view.
- FIG. 1 is a side view illustrating a schematic configuration of a vehicle side airbag device according to a first embodiment, in which first and second baffles are drawn with solid lines.
- FIG. 2 is a view taken along line AA-AA in FIG. 3 is a cross-sectional view taken along line AB-AB in FIG. 1
- FIG. 4 is a cross-sectional view taken along line AC-AC in FIG. 1
- FIG. 5 is the side air for the vehicle shown in FIG.
- FIG. 6 is a cross-sectional view corresponding to FIG. 2 or FIG. 3 in a state in which the side airbag of the bag device is inflated.
- FIG. 1 is a side view illustrating a schematic configuration of a vehicle side airbag device according to a first embodiment, in which first and second baffles are drawn with solid lines.
- FIG. 2 is a view taken along line AA-AA in FIG. 3 is a cross-sectional view taken along line AB-AB in FIG. 1
- FIG. 4 is a
- FIG. 6 shows a state in which the side airbag of the vehicle side airbag device shown in FIG.
- FIG. 7 is a schematic side view of the first and second baffles drawn with a solid line
- the vertical direction of the side airbag corresponds to the vertical direction of the vehicle
- the longitudinal direction of the side airbag corresponds to the vehicle front and the rear of the vehicle
- the width direction of the side airbag is the vehicle width direction.
- the vehicle side airbag device 101 is built in the seat back 102 a of the seat 102, and the inflator gas AG is introduced into the vehicle, whereby the vehicle is introduced into the gap between the occupant AP and the vehicle side portion.
- a side airbag 103 that is deployed and inflated from the rear toward the front of the vehicle is provided.
- the vehicle side airbag device 101 is mainly inserted into the side airbag 103 from the outside through the side airbag 103 and an opening 114, which will be described later, and the gas ejection hole 104a.
- the inflator 104 is fixed to the seat back 102a.
- the side airbag 103 includes a vehicle inner panel 105 and a vehicle outer panel. These panels 105 and 106 are formed of a flexible material that can be deployed and inflated from the stored state, as is conventionally known in the technical field of vehicle airbags.
- the vehicle outer side panel 106 faces the side of the vehicle such as the inner surface of the door or the inner surface of the side window.
- the vehicle interior panel 105 faces the occupant AP when the side airbag 103 is deployed.
- the side airbag 103 is stored in a folded state or the like, and stored in the seat back 102a.
- the rear edge 103a at the rear in the vehicle front-rear direction is positioned in the seat back 102a, and the upper edge 103b and the lower edge 103c in the vehicle vertical direction protrude in the vertical direction.
- the front edge 103d projects forward of the vehicle along the seat cushion 102b.
- a waist restraining chamber AW In the side airbag 103, as shown in FIGS. 1 and 6, three chambers, a waist restraining chamber AW, a shoulder restraining chamber AV, and a chest restraining chamber AY are formed.
- the chambers AV, AW, and AY are divided by a first baffle 107 and a second baffle 108, which will be described later, and are provided inside the side airbag 103.
- the waist restraining chamber AW is formed in the lower part of the side airbag 103 which is located above the seat cushion 102b and faces the waist of the occupant AP (indicated by AH in the figure).
- the shoulder restraining chamber AV is formed in an upper part of the side airbag 103 facing the shoulder part (indicated by AS in the figure) of the occupant AP, located in front of the upper part of the seat back 102a.
- the chest restraint chamber AY is located in front of the seat back 102a, between the waist restraint chamber AW and the shoulder restraint chamber AV, and faces the chest of the occupant AP (shown as AK in the figure).
- 103 is formed in the front part of the vehicle.
- the shoulder restraint chamber AV In the inflation / deployment of the side airbag 103, the shoulder restraint chamber AV is first inflated, and then the waist restraint chamber AW is deployed. As for the main restraint, priority is given to these shoulder AS and waist AH. Therefore, the main part of the side airbag 103 is configured by at least one of the shoulder restraining chamber AV and the waist restraining chamber AW. Of course, you may comprise by both.
- the vehicle rear portion AU in the main part of the side airbag 103 located on the vehicle rear side of the chest restraining chamber AY is deployed and inflated inside the seat back 102a when the side airbag 103 is deployed and inflated (see FIG. 6). That is, the attachment position of the side airbag 103 is set so that the vehicle rear portion AU of the main part is deployed and inflated inside the seat back 102a with respect to the seat back 102a.
- the shoulder restraining chamber AV constitutes the main part.
- the waist restraining chamber AW may constitute the main part, or both chambers AV and AW may constitute the main part.
- the vehicle rear portion AU of the main portion of the side airbag 103 is provided with an inflator 104 that injects the inflator gas AG into the vehicle rear portion AU so that the gas ejection hole 104a is located inside the side airbag 103. .
- the first baffle 107 is formed in a strip shape having a width in the vehicle width direction as shown in FIG.
- the first baffle 107 is formed of a single panel material. Similar to the panels 105 and 106, the first baffle 107 is formed of a flexible material so as to extend from a folded state.
- the first baffle 107 divides the shoulder restraint chamber AV including the main part and the waist restraint chamber AW, and is positioned below the side airbag 103 and extends in the vehicle front-rear direction inside the side airbag 103. Is done.
- both side edges 107a in the width direction are joined to the vehicle inner panel 105 and the vehicle outer panel 106 by a joining line As2 by sewing.
- the first baffle 107 expands the space between the panels 105 and 106 in the vehicle width direction, and inflates the side airbag 103 into a three-dimensional shape that secures the thickness in the vehicle width direction.
- the rear end 107b in the length direction is joined to the rear edge 103a of the side airbag 103.
- the lengthwise rear end 107b of the first baffle 107 is simultaneously joined to the outer peripheral seam line As1 by sewing.
- the attachment position of the first baffle 107 is set so that the lower side thereof is the waist restraining chamber AW.
- the second baffle 108 is formed in a strip shape having a width in the vehicle width direction, as shown in FIGS.
- the second baffle 108 is formed of a single panel material.
- the second baffle 108 is also formed of a flexible material so as to extend from the folded state.
- the second baffle 108 extends approximately in the vehicle vertical direction inside the side airbag 103.
- the second baffle 108 is formed in a bow stem shape as a whole, with the central portion bent along the vehicle vertical direction and the lower portion and the upper portion bent toward the front of the vehicle. Also in the second baffle 108, both side edges 108a in the width direction are joined to the vehicle interior panel 105 and the vehicle exterior panel 106 by a joining line As3 by sewing. As with the first baffle 107, the second baffle 108 is also expanded in the vehicle width direction between the panels 105 and 106 (see FIG. 5), and the side airbag 103 is inflated into a three-dimensional shape that secures the thickness in the vehicle width direction.
- the vehicle rear portion AU of the main portion is quickly deployed, and the vehicle front portion of the main portion is quickly pushed out from the seat back 102a, so that good deployment performance can be obtained.
- an upper end 108b of an upper portion extending from a baffle overlap portion 109, which will be described later, to the upper side of the side airbag 103 is joined to an upper edge 103b of the side airbag 103, and a lower end 108c of the lower portion. Is joined to the front end 103 d of the side airbag 103. Specifically, both ends 108b and 108c of the second baffle 108 are simultaneously joined to the outer peripheral seam line As1 by sewing.
- the mounting position of the second baffle 108 is such that the main vehicle rear portion AU that expands inside the seat back 102a is located rearward, the opposite front is the chest restraining chamber AY, and the lower portion below is the waist restraining chamber.
- AW is set, and the upper portion of the upper portion is set to be the shoulder restraining chamber AV.
- a baffle overlap portion 109 is set at an intermediate position of the second baffle 108, specifically, at a bent portion 108d that transitions from a central portion to a lower portion.
- the lengthwise front end 107 c of the second baffle 108 and the first baffle 107 is overlapped at the baffle overlap portion 109.
- the second baffle 108 is stacked so as to wrap the front end 107c of the first baffle 107 from above.
- a gap is set between the front end 107c of the first baffle 107 and the second baffle 108, and this gap is an internal vent hole that communicates the waist restraining chamber AW with the chest restraining chamber AY. 110 is configured.
- the front end 107 c of the first baffle 107 is connected together with the vehicle outer side panel 106 and the vehicle inner side panel 105 together with the second baffle 108, as shown in FIG. Specifically, one side edge 108a in the vicinity of the bent portion 108d of the second baffle 108 and one side edge 107a in the vicinity of the front end 107c of the first baffle 107 are collectively connected to the vehicle exterior panel 106 at the joining line As2. , As3 and the other side edge 108a in the vicinity of the bent portion 108d of the second baffle 108 and the other side edge 107a in the vicinity of the front end 107c of the first baffle 107 are collectively attached to the vehicle interior panel 105. Are joined by joining lines As2 and As3.
- the baffles 107 and 108 are partitioned to form the chest restraining chamber AY on the upper side and the waist restraining chamber AW on the lower side.
- the sewing procedure at the baffle overlap location 109 is that the first and second baffles 107 and 108 are collectively attached to one of the vehicle inner panel 105 and the vehicle outer panel 106 before joining at the outer peripheral seam line As1.
- the baffles 107 and 108 are joined together at the opposite joining lines As2 and As3, and then joined together at the joining lines As2 and As3.
- the first and second baffles 107 and 108 are bonded in advance, and then the first baffle 107 is bonded to the panels 105 and 106 through the bonding line As2, and then the second baffle 108 is bonded to the panels 105 and 106.
- the panels 105 and 106 may be joined together by the outer peripheral seam line As1 including the ends 107b, 108b and 108c of the baffles 107 and 108.
- the angle ⁇ between the second baffle 108 and the first baffle 107 on the side facing the inflator 104 is set to an acute angle. That is, the first baffle 107 disposed from the rear edge 103a of the side airbag 103 toward the front of the vehicle and the bent portion 108d of the second baffle 108 are gradually approached and the interval is narrowed.
- the joining strength between the baffles 107, 108 at the baffle overlap location 109 can be increased. Since the inflator gas AG flows from the shoulder restraining chamber AV to the waist restraining chamber AW at a high speed in the vicinity of the joint portion between the first baffle 107 and the second baffle 108, strength is required. When the angle ⁇ formed by the two baffles 107 and 108 is an acute angle, damage caused by the inflator gas AG flowing in can be reduced.
- the angle formed by the second baffle 108 and the first baffle 107 on the side facing the inflator 104 is set to an obtuse angle, the capacity from the main part to the shoulder restraining chamber AV becomes too large, and the chambers AV, AW, AY The capacity cannot be set properly.
- the inflator 104 has a cylindrical shape and is disposed through the opening 114 formed near the upper portion of the rear end 107b of the first baffle 107.
- a plurality of gas ejection holes 104a are arranged in the circumferential direction in the vicinity of the upper end, which is one end of both ends of the inflator 104 in the longitudinal direction.
- a connector 104b for supplying an ignition signal is provided at the lower end which is the other end of the inflator 104.
- the side airbag 103 is disposed on the vehicle rear portion AU of the main portion of the side airbag 103 so that the connector 104b is exposed to the outside of the side airbag 103 and the gas ejection hole 104a is disposed inside the side airbag 103.
- An opening 114 that connects the inside and the outside is provided.
- the opening 114 is formed so as to pass through the first baffle 107 that is stacked in two and either the vehicle interior panel 105 or the vehicle exterior panel 106 (in the illustrated example, the vehicle interior panel 105).
- the inflator 104 is inserted through the opening 114 and attached.
- the inflator 104 is attached by inserting a part of the inflator 104 into the side airbag 103 through the opening 114 to the vicinity of the center.
- a gas ejection hole 104 a is provided on the upper end side of the inflator 104 inserted into the side airbag 103.
- the inflator 104 is provided with a stud bolt (not shown), and the inflator 104 is fixed to the seat back 102a using this stud bolt.
- the vicinity of the opening 114 has a double structure by the outer vehicle interior panel 105 and the inner first baffle 107, and is set to have a relatively high rigidity. This is to cope with the pressure of the inflator gas AG and the heat from the inflator 104.
- the opening 114 is formed through the vehicle interior panel 105.
- the inflator 104 is inserted into the opening 114 to the vicinity of the center thereof.
- the inflator 104 is attached in such a posture that the longitudinal direction is along the outer circumferential seam line As1.
- the inflator 104 ejects the inflator gas AG from the gas ejection hole 104a.
- the inflator gas AG ejected from the gas ejection hole 104a first fills the shoulder restraining chamber AV. Subsequently, the inflator gas AG flows into the waist restraining chamber AW through the internal vent hole 110. The inflator gas AG fills the waist restraining chamber AW slightly after the shoulder restraining chamber AV.
- the second baffle 108 is formed with another internal vent hole 111 that allows the shoulder restraint chamber AV and the chest restraint chamber AY to communicate with each other.
- the inflator gas AG filling the shoulder restraint chamber AV flows into the chest restraint chamber AY via the internal vent hole 111 and fills up. Since the inflator gas AG filled in the waist restraining chamber AW closes the internal vent hole 110 formed by the gap between the first baffle 107 and the second baffle 108, the inflator gas AG flows backward from the waist restraining chamber AW. There is nothing.
- the mechanism for preventing the backflow in the internal vent hole 110 is the same as that described with reference to FIGS.
- the operation of the vehicle side airbag device 101 according to this embodiment will be described.
- the first baffle 107 and the second baffle 108 having a width in the vehicle width direction are used, and the first baffle 107 is turned upside down at the baffle overlap portion 109.
- the periphery of the bent portion 108d of the second baffle 108 having the same shape is overlapped, and one side edges 107a, 108a of the baffles 107, 108 are overlapped with the vehicle outer panel 106 and the vehicle. It joins to either one of the inner side panels 105 by joining line As2 and As3.
- the first baffle 107 is joined over the entire length in the length direction at the joining line As2.
- the 2nd baffle 108 is joined over the full length by joining line As3.
- first and second baffles 107 and 108 are attached to either the vehicle exterior panel 106 or the vehicle interior panel 105.
- first and second baffles 107 and 108 are joined to either one of the vehicle outer side panel 106 and the vehicle inner side panel 105 by the joining lines As2 and As3.
- first baffle 107 is joined over the entire length in the length direction at the joining line As2.
- 2nd baffle 108 is joined over the full length by joining line As3.
- the 1st and 2nd baffles 107 and 108 are attached to both in the state pinched
- the front end 107 c of the first baffle 107 is joined to the second baffle 108 and both the panels 105 and 106. Thereafter, the panels 105 and 106 are joined together by the outer peripheral seam line As1 including the rear end 107b of the first baffle 107 and both ends 108b and 108c of the second baffle 108. Thereby, the side airbag 103 is created.
- both side edges 108a of the second baffle 108 are joined to both the vehicle outer side panel 106 and the vehicle inner side panel 105 by the joining line As3 over the entire length.
- the front end 107c of the first baffle 107 is sandwiched around the bent portion 108d of the second baffle 108, and the first baffle 107 and the second baffle 108 are overlapped with each other. Is set.
- both side edges 107a of the first baffle 107 are joined to both the vehicle outer side panel 106 and the vehicle inner side panel 205 by the joining line As2.
- the front end 107 c of the first baffle 107 is joined to the second baffle 108 and both the panels 105 and 106.
- the first baffle 107 and the second baffle 108 can be bent into a U shape or a V shape between the vehicle outer panel 106 and the vehicle inner panel 105 according to the contact and separation of the panels 105, 106. It is attached in a state. Thereby, the 1st and 2nd baffles 107 and 108 are attached to both in the state pinched
- the panels 105 and 106 including the rear end 107b of the first baffle 107 and both ends 108b and 108c of the second baffle 108 are joined together by the outer peripheral seam line As1. Thereby, the side airbag 103 is created.
- the inflator gas AG flows into the shoulder restraint chamber AV and the waist restraint chamber AW, and the chambers AV and AW are inflated to expand and inflate the side airbag 103.
- the vehicle rear portion AU of the main portion of the side airbag 103 is inflated in the seat back 102a, and at the same time, the entire shoulder restraining chamber AV is instantaneously filled with the inflator gas AG.
- the waist restraining chamber AW is also instantly filled with the inflator gas AG through the internal vent hole 110.
- the inflator gas AG filled in the shoulder restraint chamber AV and the waist restraint chamber AW continues to flow into the chest restraint chamber AY through the internal vent hole 111, and with a slight delay, the inflator gas AG fills the chest restraint chamber AY. Expansion is complete. As a result, the chest AK of the occupant AP and the periphery thereof are protected. As shown in FIGS. 6 and 7, all of the three chambers AV, AW, AY are inflated with a thickness in the vehicle width direction by baffles 107, 108 having a width, and the passenger airbag AP is formed as a three-dimensional side airbag 103. Can be protected.
- the first baffle 107 and the second baffle 108 are incorporated in the side airbag 103.
- the 1st baffle 107 is extended in the vehicle front-back direction, and the longitudinal direction rear end 107b is joined to the rear edge 103a of the side airbag 103.
- the second baffle 108 extends in the vertical direction of the vehicle and is a baffle overlap portion 109 set at an intermediate position of the second baffle 108, along with the front panel 107 c in the longitudinal direction of the first baffle 107 and the vehicle inner panel 105. Connected together with the panel 106.
- Both ends 108 b and 108 c of the second baffle 108 are joined to the outer peripheral edge of the side airbag 103. Due to the rational arrangement of the first baffle 107 and the second baffle 108, the side airbag 103 has a three-dimensional shape with a sufficient thickness in the vehicle width direction, and corresponds to the shoulder portion AS, waist portion AH and chest portion AK of the occupant AP.
- the chambers AV, AW, and AY can be formed all at once.
- the side airbag 103 with high productivity can be configured with a small number of parts by simply adding two baffles 107 and 108.
- each baffle 107,108 in the taper shape which becomes gradually narrow toward the site
- the inflator is arranged such that the first baffle 107 disposed from the rear edge 103a of the side airbag 103 toward the front of the vehicle and the bent portion 108d of the second baffle 108 gradually approach and the interval is narrowed.
- An angle ⁇ formed by the second baffle 108 and the first baffle 107 on the side facing 104 is set to an acute angle.
- FIG. 8 shows a first modification of the first embodiment.
- FIG. 8 is a cross-sectional view corresponding to FIGS. 2 and 3.
- each of the first and second baffles 107 and 108 is formed of one panel material, but may be formed of at least two or more panel pieces 112.
- the baffles 107 and 108 are formed by arranging a plurality of panel pieces 112 having substantially the same length and the same width in the width direction and joining them together.
- the baffles 107 and 108 are formed by two panel pieces 112 .
- one side edges 112a are joined to each other in the length direction.
- baffles 107 and 108 similar to those in the above-described embodiment are formed, each having a joint at the center.
- the side edges 112 a of the panel pieces 112 are joined to each other in the length direction between the vehicle inner panel 105 and the vehicle outer panel 106.
- the other side edge 107a of the piece 112 is joined to the vehicle inner panel 105 and the vehicle outer panel 106, respectively, and the rear end 107b in the length direction of the first baffle 107 is simultaneously joined to the outer peripheral seam line As1.
- the side edges 112 a of the panel pieces 112 are joined to each other in the length direction between the vehicle inner panel 105 and the vehicle outer panel 106.
- the other side edge 108a of the piece 112 is joined to the vehicle inner panel 105 and the vehicle outer panel 106, respectively, and the length of the second baffle 108 extends from at least the baffle overlap portion 109 toward the upper side of the side airbag 103.
- the direction upper end 108b is simultaneously joined to the outer peripheral seam line As1.
- the panel pieces 112 are joined in advance to the vehicle outside and vehicle interior panels 105 and 106, and the panel pieces 112 are joined together before the outer seam line As1 is joined to form the baffles 107 and 108. Therefore, the inside and outside panels 105 and 106 to which the panel pieces 112 are joined can be handled separately, and the side air can be used more than in the above embodiment in which the baffles 107 and 108 are formed of a single panel material. The assembly workability of the bag 103 can be improved.
- FIG. 9 shows a second modification of the first embodiment.
- FIG. 9 is a side view corresponding to FIG.
- the entire inflator 104 is accommodated inside the side airbag 103. Therefore, the inflator 104 is not exposed to the outside.
- a through hole 115 of the inflator 104 is provided at the rear end 107b in the length direction of the first baffle 107 extending in the vehicle front-rear direction.
- the inflator 104 inserted through the through-hole 115 is positioned in the shoulder restraining chamber AV at the upper part and in the waist restraining chamber AW at the lower part.
- a flexible sleeve 113 provided in the waist restraining chamber AW is joined around the through hole 115.
- a metal diffuser 120 is provided on the outer periphery of the inflator 104.
- the diffuser 120 has a hollow cylindrical shape and covers almost the entire outer periphery of the inflator 104.
- Inflator gas AG is ejected from both the upper and lower ends of diffuser 120.
- An opening 113 a is provided at the lower end of the flexible sleeve 113.
- the flexible sleeve 113 passes through the through hole 115 of the first baffle 107 and surrounds the lower part of the inflator 104 located in the waist restraining chamber AW.
- the periphery of the opening 113 a of the flexible sleeve 113 is deformed by the pressure of the inflator gas AG acting on the periphery, and when the gas pressure in the chambers AV and AW overcomes the gas jet output from the inflator 104, the diffuser 120. And the opening 113a is blocked.
- the inflator gas AG that has flowed into one of the shoulder restraining chamber AV and the waist restraining chamber AW partitioned by the first baffle 107 can function as a check valve that prevents the inflator gas AG from flowing out toward the other. . Therefore, the internal pressures of the chambers AV and AW can be controlled appropriately and easily, and the passenger protection performance can be improved.
- FIG. 10 shows a third modification of the first embodiment.
- FIG. 10 is a side view corresponding to FIG. In FIG. 10, the cross section taken along line AA-AA, the cross section taken along line AB-AB, and the cross section taken along arrow AC-AC are the same as those shown in FIGS.
- the first and second baffles 107 and 108 are formed of a single panel material.
- the main part is constituted by the waist restraining chamber AW.
- the first baffle 107 is arranged so as to separate the waist restraining chamber AW and the shoulder restraining chamber AV, and is positioned above the side airbag 103 so that the front and rear of the vehicle are placed inside the side airbag 103.
- the second baffle 108 is also arranged substantially upside down with respect to the embodiment shown in FIG.
- the lower end 108c of the lower part extending downward from the baffle overlap location 109 to the lower side of the side airbag 103 is joined to the lower edge 103c of the side airbag 103, and the upper end 108b of the upper part. Is joined to the upper edge 103 b of the side airbag 103.
- the side airbag 103 is created and deployed and inflated except that the introduction of the inflator gas AG through the internal vent holes 110 and 111 is performed from the waist restraint chamber AW toward the shoulder restraint chamber AV and the chest restraint chamber AY.
- the third embodiment is substantially the same as the above embodiment, and it is a matter of course that the same effect as the above embodiment can be obtained even in the third modification.
- the baffles 107 and 108 may be formed by joining a plurality of panel pieces 112.
- the baffles 107 and 108 may be formed by joining a plurality of panel pieces 112.
- one side of these panel pieces 112 is provided between the vehicle inner panel 105 and the vehicle outer panel 106.
- the edges 112a are joined to each other in the length direction, and the other side edges 108a of the panel pieces 112 of the second baffle 108 are joined to the vehicle interior panel 105 and the vehicle exterior panel 106, respectively.
- the lower end 108c extending from at least the baffle overlap portion 109 toward the lower side of the side airbag 103 is simultaneously joined to the outer peripheral seam line As1.
- the partition that partitions the inside of the side airbag into a plurality of chambers has a function of preventing the backflow of the inflator gas, thereby forming a plurality of chambers and adjusting the internal pressure of each chamber with a small number of parts. It is related with the side airbag apparatus for vehicles which can ensure at once.
- a conventional side airbag device for a vehicle has a side airbag that is built in a seat and is deployed and inflated from the rear of the vehicle toward the front of the vehicle between the occupant and the side of the vehicle by introducing inflator gas from the inflator. is doing.
- a side airbag may be provided with a tether or a separation wall for the purpose of adjusting the expansion form or dividing the interior into a plurality of chambers.
- Japanese Patent Application Laid-Open No. 2000-108835 discloses a vehicle side airbag device of this type.
- the tether belt that regulates the airbag to expand and deploy into a predetermined shape and the sewing portion of the airbag are not damaged by high-pressure gas, and the airbag device is small and lightweight.
- the airbag is inflated and deployed by the high-pressure gas ejected from the inflator by the impact at the time of the collision, and the airbag is shaped into a predetermined shape in the airbag that protects the occupant from the impact at the time of the collision.
- At least one tether belt for restricting expansion and deployment is provided, and two rows of first and second sewn portions in which a fixing portion between the airbag base fabric and the tether belt is arranged in parallel in the longitudinal direction of the tether belt
- the second sewn portion is located closer to the center side than the first sewn portion located on the end side of the tether belt. It is broken or frayed easily configured for tensile force applied to the belt.
- Patent Document 4 Japanese Patent Laid-Open No. 2001-63502 discloses an “airbag check valve and air bag” which is a connecting hose between a first chamber and a second chamber as a check valve for an air bag in an automobile occupant restraint system. And place the filling in the connection hose.
- the connecting hose is divided into a fluid passage between the first chamber and the second chamber and a pressure chamber connected to the second chamber by the inner cloth.
- the “automobile airbag” disclosed in Patent Document 5 Japanese Patent Publication No. 2009-537360
- the flow path prevents backflow to increase the suitability of the airbag to side impact loads Means for preventing the flow medium from flowing in the forward direction, while largely preventing the flow of the flow medium in the blocking direction opposite to the forward direction.
- Patent Document 3 it has been attempted to divide the inside of a side airbag mainly composed of a panel into a plurality of chambers (regions). If a plurality of chambers can be provided, the internal pressure of these chambers can be adjusted as appropriate. For example, the occupant's waist, shoulders, chest, etc. can be appropriately received in each chamber to enhance occupant protection performance. .
- the improvements to the vehicle side airbag device according to the present invention provide the partition that partitions the interior of the side airbag into a plurality of chambers to have a function of preventing the backflow of the inflator gas.
- This provides a configuration that can secure the formation of a plurality of chambers and the internal pressure adjustment of each chamber at a stroke with a small number of parts.
- FIG. 11 is a side view showing an outline of a vehicle side airbag device described throughout the present specification, which is common to the first embodiment
- FIG. 12 is a diagram of the vehicle side airbag device according to the second embodiment.
- FIG. 13 is a side view
- FIG. 13 is an explanatory view for explaining the assembled state of the parts constituting the vehicle side airbag device shown in FIG. 11,
- FIG. 14 is a cross-sectional view taken along line A1-A1 in FIG. 12 is a cross-sectional view taken along line A2-A2 in FIG. 12,
- FIG. 16 is a cross-sectional view taken along line A3-A3 in FIG.
- FIG. 18 is an essential part enlarged perspective view showing a state where the gas passage shown in FIG. 17 is blocked, and FIG. 18 is an essential part enlarged perspective view showing the vicinity of the cross section A1-A1 showing how the inflator gas flows in the gas passage.
- the vehicle side airbag device 1 is built in the seat back 2 a of the seat 2, and the inflator gas ejected from the inflator is introduced into the interior, so that the occupant and the vehicle side part are interposed.
- a side airbag 3 that is deployed and inflated from the rear of the vehicle toward the front of the vehicle is provided.
- the vehicle side airbag device 1 mainly includes a side airbag 3 and an inflator 4 provided inside the side airbag 3.
- the inflator 4 is fixed to the seat back 2a and is disposed rearward in the vehicle front-rear direction.
- the side airbag 3 employed in the second embodiment includes an inner panel body 5 and an outer panel body 6 as shown in FIGS.
- These panel bodies 5 and 6 are formed of various flexible and flexible materials that can be deployed and inflated from a stored state, as conventionally known in the technical field of vehicle airbags.
- the vehicle exterior panel body 6 faces the vehicle side portions such as the door inner surface and the side window inner surface.
- the vehicle interior panel body 5 faces the occupant side when the side airbag 3 is deployed.
- the vehicle inner panel body 5 and the vehicle outer panel body 6 are integrally formed, for example, in a continuous manner.
- a folding line F is set at the boundary (joint) between the vehicle inner panel body 5 and the vehicle outer panel body 6.
- the vehicle inner panel body 5 and the vehicle outer panel body 6 are formed in a line-symmetric form with respect to the fold line F, and are closely overlapped by being folded at the fold line F.
- the vehicle inner panel body 5 and the vehicle outer panel body 6 may be formed separately and integrally joined at the boundary position.
- the vehicle inner panel body 5 and the vehicle outer panel body 6 include upper panel portions 5a and 6a and lower panel portions 5b and 6b, respectively.
- the upper panel portions 5a and 6a are positioned above the vehicle vertical direction, and the lower panel portions 5b and 6b are positioned below the vehicle vertical direction.
- the vehicle inner panel body 5 and the vehicle outer panel body 6 are respectively formed.
- the upper panel portions 5a and 6a are adjusted to the positions of the occupant's shoulder and chest, and the lower panel portions 5b and 6b are adjusted to the position of the occupant's waist.
- the upper panel portions 5a, 6a and the lower panel portions 5b, 6b are joined with the lower panel portions 5b, 6b on the inside and the upper panel portions 5a, 6a on the outside.
- the lower part of the upper panel parts 5a, 6a and the upper part of the lower panel parts 5b, 6b are overlapped with each other, and a joint line U slightly above the lower end part of the upper panel parts 5a, 6a is used as a reference. It joins linearly from the front end toward the rear end of the vehicle rear side.
- the side airbag 3 is formed by connecting the vehicle inner and outer panel bodies 5 and 6 formed from the upper and lower panel portions 5a, 5b, 6a and 6b with an outer peripheral joint line G along the outer peripheral edge of the panel bodies 5 and 6. By joining and sealing, it is formed in an inflatable bag shape.
- a front side upper and lower partition portion is formed inside the side airbag 3 by a first belt-like member 8 described later.
- the front-side upper and lower partition portions are formed from the front end of the side airbag 3 toward the rear end at a distance from the rear end of the side airbag 3 in the vehicle front-rear direction along the joining line U.
- the front upper and lower partition portions are formed of the first belt-like member 8 that is flexible and can be flexibly deformed similarly to the panel bodies 5 and 6.
- belt-shaped member 8 is formed by superimposing the two strip
- the strip 8a constituting the first strip member 8 is formed such that the other side edges can be expanded with respect to the one side edge joined by the seam line s1.
- the first belt-like member 8 has a length direction directed in the vehicle front-rear direction and a width direction directed in the overlapping direction of the panel bodies 5 and 6. Both side edges in the width direction of the first strip member 8 are integrally joined to the vehicle inner panel body 5 (5a, 5b) and the vehicle outer panel body 6 (6a, 6b), respectively.
- the front end of the first band-shaped member 8 is joined integrally with the vehicle inner panel body 5 and the vehicle outer panel body 6 at the outer peripheral joint line G.
- the rear end 8 b of the first belt-like member 8 is interrupted with a distance from the rear end of the side airbag 3.
- a rear side upper and lower partition part is formed by a second belt-like member 9 described later.
- the rear side upper and lower partition portions are formed from the rear end to the front end of the side airbag 3 at a distance from the front end of the side airbag 3 in the vehicle front-rear direction along the joining line U.
- the rear side upper and lower partition portions are formed including a portion located below the front side upper and lower partition portions.
- the rear side upper and lower partition portions are formed so as to sink under the front side upper and lower partition portions and partially include an overlap portion 10 that faces the front side upper and lower partition portions vertically.
- the rear upper and lower partition portions are formed of flexible and flexible strips 9a, similar to the front upper and lower partition portions.
- the second belt-like member 9 is formed by superposing two belt strips 9a and joining one edge of each other with a seam line s2.
- the strip 9a of the second strip-shaped member 9 is also formed so that the other side edges can be expanded with respect to the one side edge joined by the seam line s2.
- the length direction of the second strip-shaped member 9 is directed to the vehicle front-rear direction, and the width direction is directed to the overlapping direction of the panel bodies 5 and 6. Both side edges in the width direction of the second belt-like member 9 are integrally joined to the vehicle inner panel body 5 (5a, 5b) and the vehicle outer panel body 6 (6a, 6b), respectively.
- the rear end of the second belt-like member 9 is joined integrally with the vehicle inner panel body 5 and the vehicle outer panel body 6 at the outer peripheral joint line G.
- the front end 9 b of the second belt-like member 9 is interrupted with a distance from the front end of the side airbag 3.
- the upper portion is partitioned along the joining line U by the front and rear upper and lower partition portions that are continuous from the front end to the rear end in the vehicle front-rear direction by the overlap portion 10 of the rear upper and lower partition portions.
- the upper bag region T is formed in the lower portion, and the lower bag region X is formed in the lower portion.
- the upper bag region T is formed by the upper panel portions 5a and 6a, and the lower bag region X is formed by the lower panel portions 5b and 6b.
- the upper bag region T receives the occupant's shoulder and chest, and the lower bag region X receives the waist.
- FIG. 14 shows the first strips of the upper panel portions 5a and 6a, the lower panel portions 5b and 6b of the vehicle inner and outer panel bodies 5 and 6 constituting the side airbag 3, and the front and rear upper and lower partition portions.
- belt-shaped member 9 is shown.
- the said junction structure is demonstrated according to the manufacture procedure of the side airbag 3.
- the strips 8a of the first strip member 8 are superposed on the outside of the lower panel portions 5b, 6b of the vehicle interior panel body 5 and the vehicle exterior panel body 6, respectively.
- the lower panel portions 5b and 6b may be joined to each other (not shown).
- the joining of the one strip 8a to the vehicle interior panel body 5 and the joining of the other strip 8a to the vehicle exterior panel body 6 are performed separately, and the panel bodies 5 and 6 are not joined together. .
- the first belt-like member 8 is not created.
- the second belt-like member 9 is sandwiched between the lower panel portions 5b, 6b of the vehicle inner panel body 5 and the vehicle outer panel body 6, and the second belt member 9 is aligned with the joining line U position.
- the seam line s ⁇ b> 2 between the strips 9 a is lowered and the seam line s ⁇ b> 2 is positioned below the joining line U so that the second belt-like member 9 is spread upward.
- the upper panel portions 5a and 6a of the panel bodies 5 and 6 are superposed on the outer sides of the strips 8a of the first strip member 8, respectively, and one of the second strips 9 from the upper panel portion 5a of the vehicle interior panel body 5 is overlapped. It joins collectively over the strip 9a, and it joins collectively over the other strip 9a of the 2nd strip 9 from the upper panel part 6a of the vehicle outer side panel body 6 (refer (II) in the figure). .
- two joining lines U are formed, one on each of the vehicle inner panel body 5 and the vehicle outer panel body 6. If it does in this way, the seam line s2 of the 2nd strip
- the one strip 8a and the upper panel portion 5a of the vehicle interior panel body 5 are integrated in a state of overlapping one another, and on the vehicle exterior side, the other strip piece 9a of the second strip member 9 and the vehicle exterior panel body 6
- the lower panel portion 6b, the other strip 8a of the first strip 8 and the upper panel 6a of the vehicle exterior panel body 6 are integrated in this order.
- the strips 8a of the first strip member 8 are joined together (see the seam line s1 forming the first strip member 8) ((III) in the figure). reference).
- the second band-shaped member 9 that is sandwiched between the first band-shaped members 8 covering the lower panel portions 5b and 6b from above is used as the rear upper and lower partition portions.
- the overlap part 10 which faces a front side up-and-down partition part and up and down is formed.
- the seam line s1 is positioned above the joining line U so that the seam line s1 between the strips 8a is upward so that the first belt-like member 8 is spread downward.
- a reinforcing cloth may be provided so as to overlap the strip 8a.
- the first belt-like member 8 that forms the front side upper and lower partition parts is such that both side edges of the first belt-like member 8 are the lower panel parts 5b of the vehicle inner panel body 5 and the vehicle outer panel body 6, respectively.
- 6b is joined to the lower panel portions 5b, 6b in a form straddling the upper portion.
- the second strip member 9 is sandwiched between the upper portions of the lower panel portions 5b and 6b, and both side edges of the second strip member 9 are integrally upper with the lower panel portions 5b and 6b and the first strip member 8.
- the overlap portion 10 is formed by being joined to the panel portions 5a and 6a.
- the side airbag 3 is formed by forming the front upper and lower partition parts and the rear upper and lower partition members on the vehicle inner panel body 5 and the vehicle outer panel body 6, and the panel bodies 5 and 6 are joined together at the outer periphery. It is created by joining at line G.
- the inflator 4 described above is provided so as to introduce the inflator gas H into the upper bag region T. Specifically, the inflator 4 is disposed in the upper bag region T inside the side airbag 3.
- At least the overlap part 10 of the rear side upper and lower partitioning parts is formed so as to be flexibly deformable by the second belt-like member 9 that can be flexibly deformed. Between the overlap part 10 and the front side upper and lower partitioning parts, As shown in FIG. 14 and FIG. 17, a hollow cylindrical gas passage 11 is formed by these upper and lower faces.
- an inlet 11a communicating with the upper bag region T is formed by a rear end of the front upper and lower partition portions that are interrupted above the rear upper and lower partition portions, and is interrupted below the front upper and lower partition portions.
- An outlet 11b communicating with the lower bag region X is formed by the front end of the rear side upper and lower partition portions.
- the inflator gas H introduced into the upper bag region T expands and expands the upper bag region T.
- the inflator gas H that expands the upper bag region T opens the inlet 11a of the gas passage 11, expands the gas passage 11, and flows into the inside thereof. Since the overlap portion 10 and the front side upper and lower partition portions are freely deformable, the gas passage 11 is widened by the inflator gas H flowing, and the outlet 11b of the gas passage 11 is opened.
- Inflator gas H is introduced into lower bag region X from outlet 11b.
- the inflator gas H acts on the overlap portion 10 facing the lower bag region X, specifically, when the gas pressure acts, the second belt-like member 9 of the overlap portion 10 is illustrated. As shown in FIG. 18, it is pushed up toward the 1st strip
- the lower half of the gas passage 11 formed by the second strip member 9 is defined between the two joining lines U including the seam line s2, and the upper half of the lower panel portions 5b and 6b.
- the upper half of the gas passage 11 formed by the one-band member 8 is defined between the seam line s1 and the two joining lines U.
- the upper half dimension and the lower half dimension of the gas passage 11 are set to be substantially equal, and the second belt-like member 9 that is flexibly deformed and pushed up by the inflator gas H is brought into close contact with the first belt-like member 8. As a result, the gas passage 11 is blocked.
- the inflator gas H ejected from the inflator 4 is set so as to be ejected mainly downward in the vehicle vertical direction.
- the inflator gas H is first introduced into the upper bag region T, and the upper bag region T starts to expand and expand.
- the inflator gas H mainly flows downward as described above, a considerable amount flows into the gas passage 11 and is introduced into the lower bag region X.
- the lower bag region X expands and expands with the expansion and expansion of the upper bag region T.
- the inflator gas H fills the lower bag region X, and the pressure in the lower bag region X increases.
- the pressure in the lower bag region X reaches the set pressure, specifically, the pressure that causes the overlap portion 10 to be flexibly deformed upward and come into close contact with the front upper and lower partition portions, the gas passage 11 is blocked, and the lower bag region The introduction of the inflator gas H to X is blocked and the backflow to the upper bag region T is prevented.
- the inflator gas H introduced into the upper bag region T further acts on the first band member 8 of the front side upper and lower partition part, and the first belt shape
- the member 8 is flexibly deformed so as to be pushed down toward the second belt-like member 9 of the overlap portion 10, thereby strengthening the sealing of the gas passage 11.
- the inflator gas H continues to fill the upper bag region T, and the expansion and inflation of the upper bag region T continues. That is, the relatively small lower bag region X that receives the occupant's waist is completely inflated at the set pressure, and the gas passage 11 is blocked. Thereafter, with a slight delay, the relatively large-capacity upper bag region T that catches the shoulder and chest of the occupant completes inflation at the set pressure.
- the overlap portion 10 is formed on the front and rear side upper and lower partition portions that divide the inside of the side airbag 3 into upper and lower portions to form upper and lower bag regions T and X.
- the gas passage 11 that can be sealed is formed using the overlap portion 10, and the gas passage 11 is sealed with the inflator gas H introduced into the lower bag region X through the gas passage 11.
- the function of forming a plurality of bag regions T and X inside the side airbag 3 and the function of controlling the flow of the inflator gas H and adjusting the internal pressure of these bag regions T and X can be secured at once. can do.
- the partition (the first belt-like member 8 and the second belt-like member 9) that partitions the inside of the side airbag 3 into a plurality of bag regions T and X has a function of preventing the backflow of the inflator gas, so that there are few parts. With the score, the formation of the plurality of bag regions T and X and the internal pressure adjustment of the bag regions T and X can be ensured all at once.
- the necessary parts may be two parts of the front and rear side upper and lower partitions (first and second belt-like members 8 and 9), the structure is simple, the assembly workability is excellent, and the productivity is high. Can be secured.
- the first belt-like member 8 forming the front side upper and lower partition parts is integrally joined to both the vehicle inner side and the vehicle outer side panel bodies 5 and 6 at the both sides in the width direction, and the front end is joined to the panel bodies 5 and 6 by the outer peripheral joining line G.
- the side airbag can be assembled into the side airbag 3 by a simple and simple assembling work, and the assembling work is not complicated. Therefore, the side airbag can be joined with a high joining strength and has stable performance. 3 can be manufactured with high quality.
- the second belt-like member 9 that forms the rear side upper and lower partition portions is integrally joined to the vehicle inner side and the vehicle outer side panel bodies 5 and 6 at both side edges in the width direction, and the rear end thereof is joined to the panel body 5 and 6 by the outer peripheral joining line G.
- the first strip member 8 it can be assembled into the side airbag 3 by a simple and simple assembly operation, and the assembly operation is not complicated, so that it is bonded with a high bonding strength. Therefore, the side airbag 3 with stable performance can be manufactured with high quality.
- the vehicle inner panel body 5 and the vehicle outer panel body 6 include upper panel portions 5a, 6a and lower panel portions 5b, 6b, and these upper and lower panel portions 5a, 5b, 6a, 6b are overlapped and joined to each other. Therefore, when forming the front and rear side upper and lower partitions, specifically, when manufacturing the side airbag 3 by joining the first and second belt-like members 8 and 9 to the panel bodies 5 and 6. In addition, the assembly of parts around the overlap portion 10 can be facilitated, and the productivity can be improved.
- front and rear upper and lower partition portions can be formed by utilizing the joining line U between the panel portions 5a, 5b, 6a and 6b, that is, the first and second belt-like members 8 and 9 can be joined. Compared with the case where these strip-like members 8 and 9 are joined at a position different from the joining line U, they can be manufactured by a highly rational assembly procedure.
- Both side edges of the first belt-like member 8 are formed so that the first belt-like member 8 straddles the upper part of the lower panel portions 5b, 6b included in the vehicle inner panel body 5 and the vehicle outer panel body 6, respectively. Joined to 5b and 6b.
- Both side edges of the second belt-like member 9 are formed so that the second belt-like member 9 is sandwiched between the upper portions of the lower panel portions 5b and 6b, and the lower panel portions 5b and 6b and the first belt-like member 8 are integrated upward. It forms so that it may join to panel parts 5a and 6a.
- the structure that partitions the upper bag region T and the lower bag region X after the gas passage 11 is provided by the front side and rear side upper and lower partition portions can be firmly configured, and the side airbag 3 with stable performance. Can be manufactured with high quality.
- the overlap portion 10 can be flexibly deformed accurately by the inflator gas H, and the gas passage 11 is securely sealed. Excellent pressure adjusting action can be obtained. Even in the second embodiment, it is a matter of course that the effects obtained in the first embodiment can be obtained.
- FIGS. 19 to 21 show a modification of the second embodiment.
- FIG. 19 is a side view showing a modified example of the vehicle side airbag device according to the second embodiment
- FIG. 20 is a diagram for explaining an assembled state of components constituting the vehicle side airbag device shown in FIG. 21 and 21 are cross-sectional views taken along line A4-A4 in FIG.
- the strip 8a of the first strip-shaped member 8 is provided separately.
- the lower panel portions 5b and 6b are extended upward to be integrated with the lower panel portions 5b and 6b. You may make it provide the strip 8a.
- a portion corresponding to the strip 8a partially protrudes upward from the lower panel portions 5b and 6b.
- Even in such a modification it is a matter of course that the same operational effects as those of the second embodiment can be obtained.
- 22 to 26 show the vehicle side airbag device 1 according to the third embodiment.
- 22 is a side view of the vehicle side airbag device 1 according to the third embodiment
- FIG. 23 is a cross-sectional view taken along line A8-A8 in FIG. 22
- FIG. 24 is a line A5-A5 in FIG. 25 is a cross-sectional view taken along the line A6-A6 in FIG. 22
- FIG. 26 is a cross-sectional view taken along the line A7-A7 in FIG.
- the front side vertical partition is continuously extended from the rear end that was interrupted in the vehicle longitudinal direction, and extends upward in the vehicle vertical direction, and extends upward reaching the upper end of the side airbag 3. It is formed including the protruding portion 13.
- the upper extension 13 is an extension of the first strip member 8.
- the upper ends of the upper extending portions 13 are joined integrally with the vehicle inner side and the vehicle outer side panel bodies 5 and 6 by the outer peripheral joint line G.
- the upper extending portion 13 partitions the inside of the side airbag 3 in the vehicle front-rear direction, and the upper bag region T is divided into an upper front bag region Y and an upper rear bag region Z as shown by phantom lines in FIG. To divide.
- the upper rear bag region Z is adjusted to the shoulder position of the occupant, and the upper front bag region Y is adjusted to the chest position of the occupant.
- the upper extension 13 is formed with a gas introduction path 12 through which the inflator gas H ejected from the inflator 4 disposed rearward in the vehicle front-rear direction to the upper rear bag region Z is introduced into the upper front bag region Y.
- the gas introduction path 12 is configured by a hole, a notch, or the like that is formed through the first strip member 8.
- the lower panel portions 5b and 6b are simultaneously sewn by a seam line s1 (see FIG. 14) at the front portion of the strip 8a of the first strip-shaped member 8 that forms the front side upper and lower partition portions.
- the seam line s1 can be reinforced.
- the first belt-like member 8 formed by joining one side edge of the strip 8a with the seam line s1 is integrally joined to the vehicle inner side and the vehicle outer side panels 5 and 6 with the upper and lower seam lines V.
- the upper bag region T is divided into front and rear.
- FIG. 27 to 29 show modified examples of the joint structure of the overlap portion 10 in the second and third embodiments.
- FIG. 27 instead of forming the second belt-like member 9 by joining the two strips 9a with the seam line s2, one strip is formed with an upward fold f3 at the seam line position. Is the case.
- FIG. 28 shows a case where the second belt-like member 9 shown in FIG. 27 is turned upside down and the turn-back f3 is directed downward.
- a man-hour can be reduced compared with the case where the strip
- FIG. 29 shows a case where the second belt-like member 9 shown in FIG. 14 is arranged upside down.
- the second belt-like member 9 of FIG. 14 is simply turned upside down, the seam line s2 appears in the gas passage 11 and the sealing of the gas passage 11 is prevented.
- the second strip-shaped member 9 is formed by folding the two strips 9a shown in FIG. 14 so as to wrap the seam line s2, and then the folded f1 faces the gas passage 11. To be arranged. In this way, the gas passage 11 can be properly sealed even when the second belt-like member 9 is disposed in the opposite direction.
- FIG. 30 is a side view of the vehicle side airbag device 1 according to the fourth embodiment
- FIG. 31 is a perspective view of a lower panel portion constituting the vehicle side airbag device shown in FIG. 30, and
- FIG. 30 is a cross-sectional view taken along line A9-A9
- FIG. 33 is a cross-sectional view taken along line A10-A10 in FIG.
- the fourth embodiment includes an upper extension part 13 in the front upper and lower partition parts, and an upper rear bag area Z, an upper front bag area Y, and a lower part inside the side airbag 3.
- a bag region X is formed.
- the inflator gas H ejected from the inflator 4 disposed at the rear in the vehicle front-rear direction to the upper rear bag region Z is introduced into the upper front bag region Y in the upper extension portion 13.
- a gas introduction path 12 is formed.
- the 4th Embodiment is related with the modification of the 1st strip
- the first belt-like member 8 is formed by joining two strips 8a with the seam line s1, but instead, in the fourth embodiment, the first belt member 8 is formed by folding back at the seam line position. It is.
- the lower panel portion 14 is also provided in the form of a single body in which the mountain fold portion f2 is formed by folding upward from the vehicle inner side to the vehicle outer side, instead of being joined at the upper end.
- the joining structure in this case is shown in FIG. First, the 2nd strip
- the folded first belt-like member 8 is superimposed on the lower panel portion 14 having the mountain fold portion f2 in a form straddling the mountain fold portion f2. Further, the second belt-like member 9 is sandwiched between the mountain folds f ⁇ b> 2 of the lower panel portion 14. At this time, the 2nd strip
- the upper panel portions 5 a and 6 a of the panel bodies 5 and 6 are overlapped on the outer side of the first strip member 8, and extend from the upper panel portion 5 a of the vehicle interior panel body 5 to one of the strip strips 9 a of the second strip piece 9. It joins collectively, and also joins collectively from the upper panel part 6a of the vehicle outer side panel body 6 to the other strip 9a of the 2nd strip
- belt-shaped piece 9 (refer (V) in the figure).
- joining lines U are formed on the vehicle interior panel body 5 and the vehicle exterior panel body 6 in the same manner as in the above embodiment.
- the seam line s2 of the second belt-like member 9 as a boundary, on the vehicle inner side, one belt piece 9a of the second belt-like member 9, the vehicle inner side portion of the lower panel portion 14, the first belt-like member 8, and
- the upper panel portion 5a of the vehicle interior panel body 5 is integrated in a state of overlapping one another, and on the vehicle exterior side, the other strip 9a of the second strip member 9, the vehicle exterior portion of the lower panel portion 14, the first strip member 8 is integrated.
- the upper panel part 6a of the vehicle exterior panel body 6 is integrated in the state which overlapped one by one.
- the mountain fold portion f ⁇ b> 2 of the lower panel portion 14 is configured such that the vehicle rear side is opened (indicated by p in the figure).
- the overlap part 10 which faces a front side up-and-down partition part up and down is formed in the back side up-and-down partition part by the 2nd belt-shaped member 9 used as the state pinched
- a mountain fold part f2 is formed in the upper part of the lower panel part 14 by upward folding, and the first belt-like member 8 is superimposed on the lower panel part 14 in a form straddling the mountain fold part f2. Further, both end edges of the second belt-like member 9 are formed such that the second belt-like member 9 is sandwiched by the mountain folds f2 of the lower panel portion 14, and the upper panel portion is integrally formed with the lower panel portion 14 and the first belt-like member 8. Joined to 5a and 6a, the overlap part 10 is formed.
- the upper extending portion 13 branches upward from the joining line U in FIG. 30 to set the upper and lower seam lines V.
- the first belt-like member 8 formed by folding is integrally joined to the vehicle inner side and the vehicle outer side panels 5 and 6 by the upper and lower seam lines V with the both side edges joined to the upper panel portions 5a and 6a at the joining line U intact.
- the fourth embodiment has the same effects as the second and third embodiments.
- the lower panel part 14 is the single body folded by the mountain fold part f2
- operativity can be improved compared with the case where it provides separately in the vehicle inner side and the vehicle outer side.
- man-hours can be reduced and manufacturability can be improved as compared with the case where the band pieces 8a are joined.
- FIG. 34 shows a modified example of the joining structure of the overlap portion 10 in the case where the lower panel portion 14 and the first belt-like member 8 have a folded structure, in addition to the cases of FIGS. 27 to 29 described above.
- FIG. 34 shows a configuration in which the lower panel portion 14 and the first belt-like member 8 are folded in comparison with the case of FIG. 29 described above.
- the vehicle inner panel body 5 and the vehicle outer panel body 6 do not include the upper and lower panel portions 5a, 5b, 6a, and 6b, and are formed as a single body in the vehicle vertical direction.
- the first belt-shaped member 8 having the mountain fold portion f4 formed by the downward folding is disposed so as to sandwich the second belt-shaped member 9 having the upward folding f3 from above, and the first and first Two belt-like members 8 and 9 are sandwiched from both sides by vehicle interior and vehicle exterior panel bodies 5 and 6.
- the first belt-like member 8 having the mountain fold portion f4 formed by the downward turn is disposed so as to sandwich the second belt-like member 9 having the downward turn-back f3 from above, and the first and first Two belt-like members 8 and 9 are sandwiched from both sides by vehicle interior and vehicle exterior panel bodies 5 and 6.
- joining is performed by the joining line U while avoiding the turn-back portions f3 and f4, and the second belt-like member 9 and the first belt-like shape are formed inside the vehicle with the turn-back f3 of the second belt-like member 9 as a boundary.
- the member 8 and the vehicle interior panel body 5 are integrated in a state where they are sequentially overlapped, and on the vehicle exterior side, the second belt member 9, the first belt member 8 and the vehicle exterior panel body 6 are integrated in a state where they are sequentially overlapped.
- the first belt-like member 8 has a mountain fold portion f4 formed by downward folding, and both side edges of the second belt-like member 9 are at the mountain fold portion f4 of the first belt-like member 8.
- the overlap portion 10 is formed by being joined to the vehicle inner panel body 5 and the vehicle outer panel body 6 integrally with the first belt member 8.
- the vehicle interior and exterior panel bodies 5 and 6 are formed as a single body in the vehicle vertical direction, and the first and second belt-like members 8 and 9 are simply incorporated between the panel bodies 5 and 6. As a result, there are few joints and the productivity can be further improved.
- FIG. 37 shows a modification in which the upper extending portion is formed from the front upper and lower partitioning portions without using the first belt-like member 8.
- FIG. 37 corresponds to a cross-sectional view taken along line A8-A8 in FIG.
- the panel bodies 5, 6 are arranged on the vehicle rear side panel portion 15 with the seam line s 1 vicinity of the first belt-shaped member as a guide on the front end side from the rear end of the side airbag 3. Then, from the front end of the side airbag 3, a series of upper and lower seam lines V are continuously formed from the front end of the side airbag 3 so as to be divided into the vehicle front side panel portion 16 having a rear end side as a guide.
- the vehicle rear side panel portions 15 of the vehicle inner side and vehicle outer side panel bodies 5 and 6 are joined at their front end 15a (corresponding to the seam line s1 of the first belt-like member 8) (see s4).
- the vehicle front side panel part 16 is overlapped from the outside of the joined vehicle rear side panel part 15.
- the second belt-like member 9 is sandwiched between the vehicle rear side panel portions 15 along the joining line U.
- the vehicle front side panel part 16 is joined to each vehicle rear panel part 15 which overlaps and adjoins (refer s5).
- joining is performed by the joining line U extending from the front end to the rear end in the vehicle front-rear direction of the side airbag 3 and the upper and lower seam lines V branching upward from the joining line U.
- belt-shaped member 9 is collectively joined to the vehicle front side panel part 16 via the vehicle rear side panel part 15 in the vehicle inside and vehicle outside, respectively. Even if comprised in this way, the vehicle side airbag apparatus 1 which has the effect similar to said each embodiment can be obtained.
- vehicle side airbag device described above is a preferred example of the present invention, and other embodiments can be implemented or performed by various methods.
- the present invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise stated in the present specification.
- expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.
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Abstract
Description
102a シートバック
103 サイドエアバッグ
103a サイドエアバッグの後縁
104 インフレータ
104a ガス噴出孔
104b 点火信号供給用のコネクタ
105 車内側パネル
106 車外側パネル
107 第1バッフル
107a 第1バッフルの側縁
107b 第1バッフルの長さ方向後端
107c 第1バッフルの長さ方向前端
108 第2バッフル
108a 第2バッフルの側縁
108b 第2バッフルの長さ方向上端
108c 第2バッフルの長さ方向下端
109 バッフルオーバーラップ箇所
110 内部ベントホール
112 パネル片
113 可撓性スリーブ
113a 可撓性スリーブの開口部
114 開口部
120 ディフューザ
AG インフレータガス
AP 乗員
As1 外周シームライン
AU サイドエアバッグの主要部の車両後方部分
AV 肩拘束用チャンバ
AW 腰拘束用チャンバ
AY 胸拘束用チャンバ
θ 第2バッフルと第1バッフルのなす角度
1 車両用サイドエアバッグ装置
3 サイドエアバッグ
4 インフレータ
5 車内側パネル体
6 車外側パネル体
5a,6a 上方パネル部
5b,6b 下方パネル部
8 第1帯状部材
9 第2帯状部材
10 オーバーラップ部分
11 ガス通路
12 ガス導入路
13 上方延出部
f2 山折り部
f4 山折り箇所
H インフレータガス
T 上部バッグ領域
X 下部バッグ領域
Y 上前部バッグ領域
Z 上後部バッグ領域
Claims (19)
- シートバックに内蔵され、インフレータガスが導入されることにより、乗員と車両側部の間の隙間へ車両後方から車両前方に向かって展開膨張するサイドエアバッグを有する車両用サイドエアバッグ装置であって、
上記サイドエアバッグは、互いに向かい合う車内側パネルと車外側パネルの外周縁同士を外周シームラインで接合することで形成され、
上記サイドエアバッグの内部には、腰拘束用チャンバ、肩拘束用チャンバ及び胸拘束用チャンバの3つのチャンバが形成され、
上記サイドエアバッグ内部の車両後方部分には、インフレータガスを噴出するインフレータが設けられ、
上記サイドエアバッグの主要部は、上記肩拘束用チャンバ及び上記腰拘束用チャンバの少なくともいずれかで構成され、
上記サイドエアバッグは、上記主要部の車両後方部分が上記シートバックの内部で膨張するように、該シートバックに取り付けられ、
上記3つのチャンバは、第1バッフルと第2バッフルで区分けされ、
上記第1バッフルは、車幅方向に幅を有する帯状に形成され、上記サイドエアバッグ内部に車両前後方向に延在され、長さ方向後端が該サイドエアバッグの後縁に接合され、
上記第2バッフルは、車幅方向に幅を有する帯状に形成され、上記サイドエアバッグ内部に車両上下方向に延在され、該第2バッフルの中間位置に設定されたバッフルオーバーラップ箇所に、上記第1バッフルの長さ方向前端が上記車内側パネル及び上記車外側パネルと一緒に接続され、該第2バッフルの両端が該サイドエアバッグの外周縁に接合されることを特徴とする車両用サイドエアバッグ装置。 - 前記バッフルオーバーラップ箇所では、前記インフレータに面する側における前記第2バッフルと前記第1バッフルのなす角度が鋭角に設定されることを特徴とする請求項1に記載の車両用サイドエアバッグ装置。
- 前記第1バッフルの長さ方向前端は、前記第2バッフルとの間に間隙が形成され、該間隙が内部ベントホールを構成することを特徴とする請求項1または2に記載の車両用サイドエアバッグ装置。
- 前記第1バッフルは、1枚のパネル材で形成され、両側縁がそれぞれ前記車内側パネル及び前記車外側パネルに接合されると共に、長さ方向後端が前記外周シームラインに同時接合されることを特徴とする請求項1から3いずれかの項に記載の車両用サイドエアバッグ装置。
- 前記第2バッフルは、1枚のパネル材で形成され、両側縁がそれぞれ前記車内側パネル及び前記車外側パネルに接合されると共に、少なくとも前記バッフルオーバーラップ箇所から前記サイドエアバッグの上方へ向けて延在される長さ方向上端が前記外周シームラインに同時接合されることを特徴とする請求項1から4いずれかの項に記載の車両用サイドエアバッグ装置。
- 前記第2バッフルは、1枚のパネル材で形成され、両側縁がそれぞれ前記車内側パネル及び前記車外側パネルに接合されると共に、少なくとも前記バッフルオーバーラップ箇所から前記サイドエアバッグの下方へ向けて延在される長さ方向下端が前記外周シームラインに同時接合されることを特徴とする請求項1から4いずれかの項に記載の車両用サイドエアバッグ装置。
- 前記第1バッフルは、略同じ長さかつ略同じ幅の少なくとも2枚のパネル片を含み、
上記第1バッフルは、前記車内側パネルと前記車外側パネルの間で、これらパネル片の一側縁同士が長さ方向に互いに接合されて形成され、
上記第1バッフルの各パネル片の他側縁がそれぞれ上記車内側パネル及び上記車外側パネルに接合され、
上記第1バッフルの長さ方向後端が前記外周シームラインに同時接合されることを特徴とする請求項1,2,3,5,6に記載の車両用サイドエアバッグ装置。 - 前記第2バッフルは、略同じ長さかつ略同じ幅の少なくとも2枚のパネル片を含み、
上記第2バッフルは、前記車内側パネルと前記車外側パネルの間で、これらパネル片の一側縁同士が長さ方向に互いに接合されて形成され、
上記第2バッフルの各パネル片の他側縁がそれぞれ上記車内側パネル及び上記車外側パネルに接合され、
上記第2バッフルの、少なくとも前記バッフルオーバーラップ箇所から前記サイドエアバッグの上方へ向けて延在される長さ方向上端が前記外周シームラインに同時接合されることを特徴とする請求項1,2,3,4,7いずれかの項に記載の車両用サイドエアバッグ装置。 - 前記第2バッフルは、略同じ長さかつ略同じ幅の少なくとも2枚のパネル片を含み、
上記第2バッフルは、前記車内側パネルと前記車外側パネルの間で、これらパネル片の一側縁同士が長さ方向に互いに接合されて形成され、
上記第2バッフルの各パネル片の他側縁がそれぞれ上記車内側パネル及び上記車外側パネルに接合され、
上記第2バッフルの、少なくとも前記バッフルオーバーラップ箇所から前記サイドエアバッグの下方へ向けて延在される長さ方向下端が前記外周シームラインに同時接合されることを特徴とする請求項1,2,3,4,7いずれかの項に記載の車両用サイドエアバッグ装置。 - 前記サイドエアバッグ内部には、両端に開口部を有する可撓性スリーブが前記インフレータを包囲してかつ前記第1バッフルを貫通して設けられ、
上記可撓性スリーブは、上記第1バッフルで仕切った前記肩拘束用チャンバ及び前記腰拘束用チャンバのいずれか一方へ流入したインフレータガスにより変形して、インフレータガスが他方へ向かって流出することを阻止することを特徴とする請求項1から9いずれかの項に記載の車両用サイドエアバッグ装置。 - 前記インフレータはシリンダー状で、該インフレータの長手方向両端の一方の端部近傍には円周方向に、ガス噴出孔が複数配置されており、他方の端部には点火信号供給用のコネクタが設けられ、
該コネクタが前記サイドエアバッグの外部に露出され、上記ガス噴出孔が該サイドエアバッグの内部に配置されるように、当該サイドエアバッグの車両後方部分には、該サイドエアバッグ内部と外部をつなぐ開口部が設けられ、
該開口部に挿通して上記インフレータが取り付けられていることを特徴とする請求項1から10いずれかの項に記載の車両用サイドエアバッグ装置。 - 車内側パネル体と車外側パネル体を含んで形成され、インフレータガスが内部に導入されることにより、乗員と車両側部の間で車両後方から車両前方へ向かって展開膨張するサイドエアバッグを有する車両用サイドエアバッグ装置であって、
上記サイドエアバッグ内部に車両前後方向へ、該サイドエアバッグの前端から後端に向けて、かつ当該後端から距離を空けて形成される前方側上下仕切り部と、
上記サイドエアバッグ内部に車両前後方向へ、該サイドエアバッグの後端から前端に向けて、かつ当該前端から距離を空けて形成され、部分的に上記前方側上下仕切り部と上下に向かい合うオーバーラップ部分を含む後方側上下仕切り部と、
上記サイドエアバッグ内部の上方部分に、これら前方側及び後方側上下仕切り部で仕切って形成される上部バッグ領域と、
上記サイドエアバッグ内部の下方部分に、これら前方側及び後方側上下仕切り部で仕切って形成される下部バッグ領域と、
上記サイドエアバッグの車両前後方向後方に配置され、上記上部バッグ領域にインフレータガスを導入するインフレータとを備え、
上記オーバーラップ部分と上記前方側上下仕切り部との間に、上記上部バッグ領域から上記下部バッグ領域へインフレータガスを流入させ、該下部バッグ領域に導入されたインフレータガスで可撓変形される該オーバーラップ部分及び該前方側上下仕切り部の少なくともいずれか一方で封鎖されるガス通路が形成されることを特徴とする車両用サイドエアバッグ装置。 - 前記前方側上下仕切り部は、車両前後方向の後端から連続して車両上下方向上方へ向かって延出形成され、前記サイドエアバッグの上端に達する上方延出部を含み、前記上部バッグ領域は、上記上方延出部で仕切られて、上前部バッグ領域と上後部バッグ領域に分割され、上記上方延出部には、上記上後部バッグ領域から上記上前部バッグ領域へインフレータガスを導入するガス導入路が形成されることを特徴とする請求項12に記載の車両用サイドエアバッグ装置。
- 前記前方側上下仕切り部は第1帯状部材で形成され、該第1帯状部材の幅方向両側縁は、前記車内側パネル体及び前記車外側パネル体にそれぞれ一体に接合され、該第1帯状部材の前端は、これら車内側パネル体及び車外側パネル体と一体に接合されることを特徴とする請求項12または13に記載の車両用サイドエアバッグ装置。
- 前記後方側上下仕切り部は第2帯状部材で形成され、該第2帯状部材の幅方向両側縁は、前記車内側パネル体及び前記車外側パネル体にそれぞれ一体に接合され、該第2帯状部材の後端は、これら車内側パネル体及び車外側パネル体と一体に接合されることを特徴とする請求項12~14いずれかの項に記載の車両用サイドエアバッグ装置。
- 前記車内側パネル体及び前記車外側パネル体は上方パネル部と下方パネル部を含み、これら上方パネル部及び下方パネル部は、該上方パネル部の下方部分と該下方パネル部の上方部分を互いに重ね合わせて接合されることを特徴とする請求項12~15いずれかの項に記載の車両用サイドエアバッグ装置。
- 前記第1帯状部材の両側縁は、前記車内側パネル体及び前記車外側パネル体それぞれに含まれる前記下方パネル部の上方部分間を該第1帯状部材が跨ぐ形態で、該下方パネル部に接合され、前記第2帯状部材の両側縁は、上記下方パネル部の上方部分間に該第2帯状部材が挟まれる形態で、これら下方パネル部及び第1帯状部材と一体に前記上方パネル部に接合されることを特徴とする請求項16に記載の車両用サイドエアバッグ装置。
- 前記下方パネル部には上方部分に、上向きの折り返しで山折り部が形成され、前記第1帯状部材は、上記山折り部を跨ぐ形態で上記下方パネル部に重ね合わされ、前記第2帯状部材の両側縁は、上記下方パネル部の上記山折り部で該第2帯状部材が挟まれる形態で、これら下方パネル部及び第1帯状部材と一体に前記上方パネル部に接合されることを特徴とする請求項16に記載の車両用サイドエアバッグ装置。
- 前記第1帯状部材は、下向きの折り返しで形成された山折り箇所を有し、前記第2帯状部材の両側縁は、上記第1帯状部材の山折り箇所に該第2帯状部材が挟まれる形態で、該第1帯状部材と一体に車内側パネル体及び車外側パネル体に接合されることを特徴とする請求項12~16いずれかの項に記載の車両用サイドエアバッグ装置。
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