WO2015141364A1 - Side airbag device - Google Patents

Side airbag device Download PDF

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Publication number
WO2015141364A1
WO2015141364A1 PCT/JP2015/054483 JP2015054483W WO2015141364A1 WO 2015141364 A1 WO2015141364 A1 WO 2015141364A1 JP 2015054483 W JP2015054483 W JP 2015054483W WO 2015141364 A1 WO2015141364 A1 WO 2015141364A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
airbag
airbag device
cloth
side airbag
Prior art date
Application number
PCT/JP2015/054483
Other languages
French (fr)
Japanese (ja)
Inventor
鈴木　裕之
藤澤　直樹
中村　真也
孝彰 二井
俊秀 西村
Original Assignee
三菱自動車工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱自動車工業株式会社 filed Critical 三菱自動車工業株式会社
Publication of WO2015141364A1 publication Critical patent/WO2015141364A1/en

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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
    • B60R21/237—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
    • B60R21/231—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
    • B60R21/23138—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

Definitions

  • the present invention relates to a side airbag device in which an airbag is deployed on the side of a vehicle seat.
  • a side airbag device that protects a side portion of an occupant seated on a seat by deploying and inflating an airbag between the occupant and a side body member (for example, a side door) when a vehicle collides with the side, etc.
  • a side body member for example, a side door
  • the passenger seated on the seat has a shoulder closer to the side door than the chest or waist. For this reason, in the conventional side airbag device disclosed in Patent Document 1, an airbag is used in which the side portion of the shoulder portion is deployed before the chest portion.
  • the conventionally proposed side airbag device generally protects the shoulder located near the side door more appropriately because the airbag is deployed to the side of the shoulder before the chest. Can do.
  • the present invention has been made in view of the above situation, and an object of the present invention is to provide a side airbag device that can more appropriately protect a side portion of an occupant including a side collision from an oblique front.
  • a side airbag device of the present invention is provided in a vehicle seat, wherein the airbag is deployed between an occupant and a side body member.
  • the airbag is arranged to face the first base fabric, the first base fabric constituting the left and right side portions in the vehicle width direction, and constitutes the other side surface portion in the vehicle width direction, A second base cloth that forms an expansion chamber between the first base cloth and an upper cloth that is joined to the upper edges of the first base cloth and the second base cloth to form an upper surface portion;
  • the upper cloth is characterized in that the width in the vehicle width direction on the vehicle front side is wider than the width in the vehicle width direction on the vehicle rear side.
  • an upper cloth is formed which is joined to the upper edges of the first and second base cloths to form an upper surface portion, and the upper cloth is in the vehicle width direction on the vehicle front side with respect to the vehicle rear side. Since the width of the air bag is wide, the upper end portion of the airbag can be made flat, and in a state where the deployment width is sufficiently obtained without increasing the height direction, the portion from the oblique front to the side of the occupant And the side body member can be deployed. For this reason, a passenger
  • the side airbag device of the present invention according to claim 2 is the side airbag device according to claim 1, wherein the upper cloth of the airbag is folded along a fold line extending in the front-rear direction of the vehicle. It is temporarily fixed by the temporary fixing member which fractures
  • the upper cloth since the upper cloth is folded by a fold line extending in the front-rear direction of the vehicle and temporarily fixed by the temporary fixing member, the upper cloth extends between the occupant and the side body member during the airbag deployment process. After that, the temporary fixing member is broken and completely developed by the development pressure. For this reason, the airbag provided with the upper cloth whose width in the vehicle width direction on the vehicle front side with respect to the vehicle rear side can be reliably deployed between the occupant and the side body member.
  • the side airbag device of the present invention according to claim 3 is the side airbag device according to claim 2, characterized in that the temporary fixing member of the upper cloth is a temporary stitching portion by a cord-like member. To do.
  • the folded state of the upper cloth can be temporarily fixed by performing temporary sewing with a cord-like member (thread, thin string, etc.) to form a temporary sewing portion.
  • a cord-like member thin string, etc.
  • the side airbag device of the present invention according to claim 4 is the side airbag device according to claim 3, wherein the temporary stitching portion of the temporary fixing member is different in the width of the seam in the front-rear direction of the vehicle. It is characterized by being.
  • the deployment state of the airbag deployment process can be controlled by varying the width of the seam in the longitudinal direction of the vehicle.
  • the side airbag device of the present invention according to claim 5 is the side airbag device according to claim 4, wherein the temporary stitching portion of the temporary fixing member has a width of a seam on the front side of the vehicle. It is characterized by being wider than the width of the seam.
  • the side airbag device according to a sixth aspect of the present invention is the side airbag device according to the third aspect, wherein the temporary stitching portion of the temporary fixing member alternates one of a vehicle width direction and a vehicle longitudinal direction. It is characterized by a stab stitch that advances.
  • the temporary stitching portion has a sewed shape that alternates between the vehicle width direction and the vehicle front-rear direction
  • the cord-like member is separated from the first base fabric and the second base fabric in the unfolding process.
  • the airbag is extended forward while coming off, and the airbag can be reliably deployed.
  • the side airbag device of the present invention can more appropriately protect the side surface portion of the occupant including the side collision from diagonally forward.
  • FIG. 1 is an external view of a vehicle including a side airbag device according to an embodiment of the present invention. It is a side view of the sheet
  • the illustrated example is an example in which a side airbag device is provided in a passenger seat.
  • FIG. 1 is an external view showing the entire vehicle including a side airbag device according to an embodiment of the present invention
  • FIG. 2 is a side view of a seat (airbag deployment) including the side airbag device
  • FIG. FIG. 4 is a front view of a seat (airbag deployment) provided with a side airbag device
  • FIG. 4 is an external view showing the entire airbag of the side airbag device according to one embodiment of the present invention
  • FIG. 6 shows the deployment of the airbag.
  • FIG. 6 (a) shows the state of gas ejection from the inflator at the start of deployment
  • FIG. 6 (b) shows the gas ejection from the inflator when deployed. Is the situation.
  • FIG. 7 shows the details of the gas blowing portion of the inflator.
  • FIG. 7 (a) shows the situation when the upper cloth is folded (when the airbag starts to be deployed), and
  • FIG. 7 (b) Is the situation when the upper fabric is opened (when the airbag is deployed).
  • a vehicle 1 is provided with a passenger seat 2 that is a vehicle seat, and a side airbag device 5 is provided on the side door 4 side (side body member side) of the seat back 3 of the passenger seat 2.
  • the vehicle to which the side airbag device of the present invention is applied is not limited to the passenger car shown in FIG. 1, and the vehicle seat is not limited to the passenger seat 2.
  • the present invention can be applied to a rear seat of a one-box vehicle.
  • a panel member constituting a vehicle body provided with a window or the like may be applied as the side body member.
  • the expansion chamber 10 of the airbag 11 includes a first expansion chamber 12 corresponding to the shoulder 6 a of the occupant 6, a second expansion chamber 13 corresponding to the chest 6 b of the occupant 6, and a third corresponding to the waist 6 c of the occupant 6. And an expansion chamber 14.
  • the airbag 11 has a width in the vehicle width direction on the front side (left side in FIG. 2) of the vehicle 1 in the plan view when deployed, and the rear side (right side in FIG. 2). ) Is wider than the width in the vehicle width direction.
  • the airbag 11 is deployed in the order of the first expansion chamber 12 corresponding to the shoulder 6a, the third expansion chamber 14 corresponding to the waist 6c, and the second expansion chamber 13 corresponding to the chest 6b.
  • the airbag 11 can be deployed in a more accurate state with respect to the protection of the occupant 6. Since the airbag 11 is wider in the vehicle width direction on the front side of the vehicle 1 than on the rear side of the vehicle 1, the air between the side door 4 and the portion of the occupant 6 from the diagonally front side to the side surface. The bag 11 can be deployed. For this reason, the side surface portion of the occupant 6 can be more appropriately protected including a side collision from an oblique front.
  • the airbag 11 is opposed to the first base fabric 16 and the first base fabric 16 that form side surfaces on one side of the left and right sides in the vehicle width direction (in the illustrated example, the side door 4 side of the vehicle 1; see FIG. 1).
  • a first side cloth 16 is formed between the first side cloth 16 and the first side cloth 16 to form the expansion chamber 10 between the left and right sides in the vehicle width direction (in the illustrated example, the vehicle interior side of the vehicle 1; see FIG. 1).
  • Two base fabrics 17 are provided.
  • the first base fabric 16 and the second base fabric 17 have substantially the same shape, and are joined together at the periphery to form a bag shape. Further, the first base fabric 16 and the second base fabric 17 have sufficient height and front / rear length so as to protect the side surface of the occupant 6, and in particular, up to the shoulder 6a, chest 6b, and waist 6c of the occupant 6. And the front and rear lengths covering the shoulder 6a and waist 6c of the occupant 6.
  • the upper edges of the first base fabric 16 and the second base fabric 17 are joined by the upper fabric 18, and the upper surface portion is formed by the upper fabric 18. Since the upper cloth 18 is provided, the upper end portion of the airbag 11 can be made flat, and the deployment width can be sufficiently secured without increasing the height direction of the airbag 11. Thereby, for example, the deployment of the curtain airbag from above is not hindered.
  • a first partition cloth 21 is provided in the expansion chamber 10 below the upper cloth 18 of the airbag 11, and a first expansion chamber 12 is formed in the expansion chamber 10 between the first partition cloth 21 and the upper cloth 18. .
  • a second partition cloth 22 is provided in the expansion chamber 10 below the upper cloth 18 (below the first expansion chamber 12), and a second expansion cloth is provided between the second partition cloth 22 and the first partition cloth 21.
  • a chamber 13 is formed.
  • Notches 21b and 22b through which an inner tube (described later) passes are provided at the same position in the vertical direction of the inflator (described later) behind the first partition cloth 21 and the second partition cloth 22, respectively. Yes.
  • the second partition cloth 22 is provided with holes 23 (three places), and the third expansion chamber 14 is formed in the expansion chamber 10 below the second partition cloth 22.
  • the second expansion chamber 13 and the third expansion chamber 14 are partitioned by the second partition cloth 22, and the gas can freely flow through the holes 23.
  • the first base cloth 16 corresponding to the first expansion chamber 12 is provided with a first vent hole 12a
  • the first base cloth 16 corresponding to the second expansion chamber 13 is provided with a second vent hole 13a
  • the first base fabric 16 corresponding to the third expansion chamber 14 is provided with a third vent hole 14a.
  • the deployment speed of the airbag 11 is adjusted by the first vent hole 12a, the second vent hole 13a, and the third vent hole 14a.
  • the upper cloth 18 and the first partition cloth 21 have substantially the same shape, and the width H1 in the vehicle width direction on the front front end side (left side in the figure) of the vehicle 1 (see FIG. 1) is the vehicle 1 (see FIG. 1). ) At the rear rear end side (right side in the figure) of the vehicle width direction H2 is made wider (H1> H2). That is, the upper cloth 18 and the first partition cloth 21 are formed so as to gradually become wider toward the front.
  • the upper cloth 18 and the first partition cloth 21 have substantially the same shape, but only the upper cloth 18 has a width H1 in the vehicle width direction on the front front end side (left side in the figure) of the vehicle 1.
  • the first partition cloth 21 is the same as the second partition cloth 22.
  • a substantially rectangular shape may be used. In other words, it is sufficient if the width of the upper cloth 18 in the vehicle width direction is a wide-angle shape that becomes wider as it goes forward.
  • the first expansion chamber 12 corresponding to the shoulder 6a can be the airbag 11 having a wide width in the vehicle width direction on the front side of the vehicle 1 (see FIG. 1).
  • the inner tube 26 provided on the rear side of the vehicle 11 (see FIG. 1) of the airbag 11 extends in the vertical direction along the rear end of the airbag 11, and the inner tube 26 has an upper end portion.
  • An inflator 25 having a gas blowing part 25a is provided.
  • the inflator 25 is provided so as to be covered (contained) with a cylindrical inner tube 26, and the inner tube 26 extends in the vertical direction of the vehicle 1 (see FIG. 1).
  • An upper outlet 26 a is provided on the upper side of the inner tube 26, and a lower outlet 26 b is provided on the lower side of the inner tube 26.
  • the upper outlet 26 a of the inner tube 26 is disposed at a position corresponding to the first partition cloth 21, and the lower outlet 26 b of the inner tube 26 is disposed downward facing the third expansion chamber 14.
  • the first partition cloth 21 is folded in a valley fold along a fold line 21a extending in the front-rear direction of the vehicle 1 (see FIG. 1), and the folded portion 21c (fold line 21a) of the first partition cloth 21 in the valley fold state. Is provided below the upper outlet 26 a of the inner tube 26. Then, the first partition cloth 21 is opened in the width direction by the deployment of the airbag 11, so that the opened first partition cloth 21 is positioned above the upper outlet 26a of the inner tube 26, and the upper outlet 26a is the second outlet.
  • the expansion chamber 13 also communicates.
  • the inflator 25 when the side collision is detected, the inflator 25 is activated, and gas is ejected from the gas blowing portion 25a facing the front side of the vehicle.
  • the airbag 11 When the gas is ejected from the inflator 25, the airbag 11 is deployed between the occupant 6 (see FIG. 3) and the side door 4 (see FIG. 3).
  • the upper outlet 26a has a shape in which the inflator 25 is notched forward corresponding to the gas outlet 25a.
  • the collision detection device detects the collision, and the control device in the vehicle determines whether the airbag 11 is inflated and deployed.
  • an activation signal is sent to the inflator 25, and the inflator 25 is activated.
  • the upper cloth 18, the first partition cloth 21, and the second partition cloth 22 are folded in valleys in the width direction symmetrically about the center line P, respectively.
  • the folded portion 21 c of the first partition cloth 21 is disposed below the gas blowing portion 25 a of the inflator 25.
  • the hole 23 of the 2nd partition cloth 22 is also folded, it is in the state which is not opened.
  • the inflator 25 when the inflator 25 is operated and gas is ejected from the gas blowing part 25a (the initial stage of gas ejection), the gas flows into the first expansion chamber 12 from the upper blowing port 26a of the inner tube 26 toward the front. Since the folded portion of the first partition cloth 21 in the valley folded state is arranged below the upper outlet 26a of the inner tube 26 (because it is blocked from the second expansion chamber 13), the upper portion of the inner tube 26 The gas ejected from the outlet 26 a flows only into the first expansion chamber 12. At the same time, gas flows into the third expansion chamber 14 from the lower outlet 26 b of the inner tube 26.
  • the gas is continuously blown from the gas blowing portion 25 a of the inflator 25, so that the folded first partition cloth 21 is opened in the width direction and the inner tube 26.
  • the first partition cloth 21 is positioned on the upper side of the upper blowout port 26 a, and the upper blowout port 26 a communicates with the second expansion chamber 13 so that gas is blown into the second expansion chamber 13.
  • the gas inside the third expansion chamber 14 flows into the second expansion chamber 13 from the hole 23 of the second partition cloth 22.
  • the airbag 11 includes a first expansion chamber 12 corresponding to the shoulder 6a of the occupant 6, a third expansion chamber 14 corresponding to the waist 6c of the occupant 6, and a second expansion chamber 13 corresponding to the chest 6b of the occupant 6. Will be expanded in the order.
  • the first expansion chamber 12 corresponding to the shoulder 6a of the occupant 6 is opened by the upper outlet 26a
  • the third expansion chamber 14 corresponding to the waist 6c of the occupant 6 is opened by the lower outlet 26b
  • the first partition cloth 21 is opened.
  • the notch 21b and the second divider cloth 22 of the first partition cloth 21 are opened by the opening of the first partition cloth 21 and communicated by the hole 23, and the gas flows into the notch 21b and the hole 23 to correspond to the chest part 6b of the occupant 6.
  • the second expansion chamber 13 is opened.
  • the holes 23 are provided in the second partition cloth 22 (in three places).
  • the holes 23 may be provided in the first partition cloth 21 and the holes may not be provided in the second partition cloth 22. Is possible. That is, the 1st partition cloth 21 and the 2nd partition cloth 22 in a present Example may be reverse, and the structure which provides the hole 23 is not restricted to the structure of a present Example.
  • the first expansion chamber 12 corresponding to the shoulder 6a is the airbag 11 having a wide width in the vehicle width direction on the front side of the vehicle 1, the shoulder of the occupant 6 when deployed.
  • the airbag 11 may not reach the front side from the shoulder portion 6 a of the occupant 6. Therefore, first, the airbag 11 (especially the first expansion chamber 12) having a wider width is advanced toward the front, and the width direction is inflated with a time lag so as to pass through the shoulder 6a of the occupant 6 and appropriately It is necessary to develop. For this reason, the deployment of the airbag 11 is controlled so as to extend to the front side before it is further opened in the width direction.
  • the upper cloth 18 that is valley-folded (or tuck-folded) is temporarily fixed by a temporary fixing member.
  • the airbag 11 is extended between the passenger
  • the airbag (first expansion chamber 12) having a width in the vehicle width direction on the front side of the vehicle wider than the rear side of the vehicle can be more appropriately deployed between the occupant 6 and the side door 4. it can.
  • FIG. 8 shows a detailed situation of the upper cloth
  • FIG. 8 (a) shows a state where the folded state is temporarily fixed by a temporary stitching portion
  • FIG. 8 (b) shows a state where the folding is partially opened (while the airbag is being deployed).
  • FIG. 9 shows a plane for explaining the deployment state of the airbag with respect to the occupant.
  • FIG. 9A shows the start of deployment
  • FIG. 9B shows the deployment process
  • FIG. 9C shows the deployment completed. is there.
  • FIG. 10 shows a plane for explaining the state of the airbag with respect to the occupant at the time of a side collision.
  • a temporary fixing member of the upper cloth 18 will be described with reference to FIG.
  • the temporary fixing member of the present embodiment is constituted by a cord-like member, for example, a thread member 31 (thread).
  • the thread member 31 is individually passed through a plurality of locations between joint portions of the upper fabric 18, the first base fabric 16, and the second base fabric 17 extending in the vehicle front-rear direction, and a broken line 18 a is formed by folding the upper fabric 18 at each location.
  • the thread member 31 is stopped so as to be orthogonal to the (center line P) to form a temporary stitching portion 32. That is, it can be said that the first base fabric 16 and the second base fabric 17 are temporarily sewn.
  • the temporary stitching portion 32 has a different stitch width in the front-rear direction of the vehicle 1 (see FIG. 1), and the front stitch width h1 is wider than the rear stitch width h2.
  • the temporary seam 32 is deployed between the occupant 6 and the side door 4 without breaking, and as shown in FIG. 8 (b), in the process of deploying the airbag 11, the seam is wide from the front seam. Break and unfold.
  • the deployment state of the airbag 11 will be described based on FIG.
  • the temporary stitching portion 32 is extended between the occupant 6 and the side door 4 before breaking.
  • the seam on the front side of the vehicle 1 is broken by the development pressure, and the portion of the occupant 6 extending from the diagonally front side to the side surface is developed.
  • FIG. 9C the seam on the rear side of the vehicle is broken, and the side portion of the occupant is developed.
  • the provisional stitching portion 32 is provided to control the deployment state of the airbag 11 during the deployment process, the airbag (first expansion chamber 12) having a wider width in the vehicle width direction on the front side of the vehicle is attached to the occupant 6. And the side door 4 can be more appropriately deployed.
  • the airbag 11 when the clearance between the shoulder 6 a of the occupant 6 and the side door 4 is narrow, the airbag 11 reaches the front from the shoulder 6 a of the occupant 6, and the airbag 11 is deployed between the occupant 6 and the side door 4. be able to. In particular, by increasing the width of the seam in the forward direction, the front seam is easily broken, and the wide front portion can be effectively deployed.
  • the width of the seam of the temporary stitching portion 32 is made uniform in the front-rear direction, the width on the front side is narrowed, the front side (the wide side) is weakened, and the rear side (the narrow side) is advanced. It is also possible to sew tightly and temporarily fix.
  • the side door 4 is expanded between the occupant 6 and the side door 4 by deploying the airbag (first expansion chamber 12) widened in the vehicle width direction on the front side of the vehicle.
  • the width of the airbag 11 diagonally forward of the shoulder 6a of the occupant 6 that is relatively short can be increased. For this reason, even if the collision object 7 invades from diagonally forward, the shoulder portion 6a located near the side door 4 can be more appropriately protected.
  • FIG. 11 shows a state of a temporary fixing member that temporarily fixes with a single string member as a cord-like member.
  • FIG. 11 (a) is a state in which the folded state is temporarily fixed, and
  • FIG. FIG. 11C shows a partially opened state (while the airbag is being deployed), when deployment is completed.
  • FIG. 12 shows the situation of a temporary fixing member that temporarily fixes with a hook-and-loop fastener
  • FIG. 12 (a) shows a state in which a hook-and-loop fastener having the same width is used in the longitudinal direction of the vehicle
  • FIG. FIG. 12C shows a state using a surface fastener having a wide front side in the front-rear direction
  • FIG. 12C shows a state using a surface fastener having a wide rear side in the front-rear direction of the vehicle.
  • one thin string member 35 is sewn to one side in the front-rear direction of the vehicle (from the front to the rear) alternately in the front-rear direction and the vehicle width direction. Temporarily fixed in the direction.
  • the front end portion of the string member 35 is fastened to the joint portion between the upper cloth 18 and the first base fabric 16 (the second base fabric 17 may be used), and the rear end portion is broken by the deployment of the airbag (the first base fabric).
  • the cloth 16 or the second base cloth 17 and the upper cloth 18 are detached from the joint portion), and the fastening is released.
  • the string member 35 forms a sewed stitch shape (running stitch shape) extending in the front-rear direction of the first base fabric 16 and the second base fabric 17 with the upper fabric 18 interposed therebetween. That is, the string member 35 is stitched so as to go back and forth in the vehicle width direction at the junction between the first base fabric 16 or the second base fabric 17 and the upper fabric 18 and to advance in one of the front and rear directions. The widths of these are made uniform and temporarily fixed.
  • one string member 35 is extended when the airbag 11 is deployed.
  • the length of the string member 35 is shorter than the length of the width in front of the upper cloth 18 in order to open the upper cloth 18 more appropriately.
  • the airbag 11 (first expansion chamber 12) can be more appropriately deployed between the occupant 6 and the side door 4 in the process of deployment.
  • the temporarily fixed member shown in FIG. 12 is temporarily fixed in a folded state by a hook-and-loop fastener 41.
  • the hook-and-loop fastener 41a shown in FIG. 12 (a) is a hook-and-loop fastener 41a having the same width in the longitudinal direction of the vehicle. Since the front and rear widths of the hook-and-loop fastener 41 are the same, the joining area becomes uniform, and the airbag 11 is gradually deployed from the rear in the process of being extended forward.
  • the hook-and-loop fastener 41b shown in FIG. 12 (b) is a hook-and-loop fastener 41b having a large front width in the front-rear direction of the vehicle. Since the front fastener 41b has a large width on the front side, the joining area on the front side is increased, and the airbag 11 is more appropriately extended forward in the process of deployment.
  • the hook-and-loop fastener 41c shown in FIG. 12 (c) is a hook-and-loop fastener 41c having a large rear width in the longitudinal direction of the vehicle. Since the hook-and-loop fastener 41c has a large rear width, the front-side joining area is reduced, and the front side can be more appropriately deployed in the process of extending and deploying the airbag 11.
  • the unfolded state can be easily controlled arbitrarily.
  • the airbag (first expansion chamber 12) 11 has a wider width in the vehicle width direction on the front side of the vehicle. 11 can be widened. For this reason, even if the collision object 7 invades from diagonally forward, the shoulder portion 6a located near the side door 4 can be more appropriately protected.
  • the provisional fastening portion is provided to control the deployment state of the airbag 11 in the deployment process, the vehicle width direction on the front side of the vehicle even when the clearance between the shoulder 6a of the occupant 6 and the side door 4 is narrow
  • the airbag 11 (the first expansion chamber 12) having a wide width can be made to reach the front from the shoulder 6 a of the occupant 6, and the airbag 11 can be deployed more appropriately between the occupant 6 and the side door 4. .
  • the present invention can be used in the industrial field of a side airbag device in which an airbag is deployed on the side of a vehicle seat.

Abstract

The width of an airbag (11)[a first expansion chamber (12)] in a vehicle width direction on the forward side of a vehicle is increased so that the width of the airbag (11) diagonally forward of a shoulder portion (6a) of a passenger (6) is increased, whereby the shoulder portion (6a) positioned close to a side door (4) can be more properly protected even when a colliding object (7) enters from diagonally ahead.

Description

サイドエアバッグ装置Side airbag device
　本発明は、車両のシート側方にエアバッグが展開されるサイドエアバッグ装置に関する。 The present invention relates to a side airbag device in which an airbag is deployed on the side of a vehicle seat.
　車両が側面衝突した時等に、乗員と側面車体部材（例えば、サイドドア）との間にエアバッグを展開膨張させ、シートに着座している乗員の側面部分を保護するサイドエアバッグ装置が従来から知られている（例えば、特許文献１）。 2. Description of the Related Art Conventionally, a side airbag device that protects a side portion of an occupant seated on a seat by deploying and inflating an airbag between the occupant and a side body member (for example, a side door) when a vehicle collides with the side, etc. (For example, Patent Document 1).
　シートに着座した状態の乗員は、肩部が胸部や腰部等よりもサイドドアに近い位置にある。このため、特許文献１に開示された従来のサイドエアバッグ装置では、肩部の側方の部位が胸部の部位よりも先に展開するエアバッグが適用されている。 The passenger seated on the seat has a shoulder closer to the side door than the chest or waist. For this reason, in the conventional side airbag device disclosed in Patent Document 1, an airbag is used in which the side portion of the shoulder portion is deployed before the chest portion.
　従来から提案されているサイドエアバッグ装置は、一般的にエアバッグが、胸部よりも先に肩部の側方に展開するので、サイドドアに近い位置にある肩部をより適切に保護することができる。 The conventionally proposed side airbag device generally protects the shoulder located near the side door more appropriately because the airbag is deployed to the side of the shoulder before the chest. Can do.
　ところで、斜め前方からの側面衝突では、乗員の側面部分から斜め前方側に大きな衝撃が加わり、乗員に対する衝撃が大きくなる可能性がある。従来から提案されているサイドエアバッグ装置では、エアバッグが、胸部よりも先に肩部の側方に展開するようになっているものの、斜め前方からの側面衝突に対しては適切に保護出来ない可能性がある。 By the way, in a side collision from diagonally forward, a large impact is applied from the side of the occupant to the diagonally forward side, and the impact on the occupant may increase. In the conventionally proposed side airbag device, although the airbag is deployed to the side of the shoulder before the chest, it can be adequately protected against a side collision from obliquely forward. There is no possibility.
特開２０１３－１５９３０５号公報JP 2013-159305 A
　本発明は上記状況に鑑みてなされたもので、斜め前方からの側面衝突を含めて、乗員の側面部分をより適切に保護することができるサイドエアバッグ装置を提供することを目的とする。 The present invention has been made in view of the above situation, and an object of the present invention is to provide a side airbag device that can more appropriately protect a side portion of an occupant including a side collision from an oblique front.
　上記目的を達成するための請求項１に係る本発明のサイドエアバッグ装置は、車両用のシートに設けられ、乗員と側面車体部材との間にエアバッグが展開するサイドエアバッグ装置において、前記エアバッグは、車幅方向の左右の一方側の側面部を構成する第１基布と、前記第１基布に対向して配され、前記車幅方向の他方側の側面部を構成し、前記第１基布との間に膨張室を形成する第２基布と、前記第１基布及び前記第２基布の上縁に接合されて上面部を形成する上部布とを備え、前記上部布は、車両前方側の前記車幅方向の幅が車両後方側の前記車幅方向の幅に比べて広くされていることを特徴とする。 In order to achieve the above object, a side airbag device of the present invention according to claim 1 is provided in a vehicle seat, wherein the airbag is deployed between an occupant and a side body member. The airbag is arranged to face the first base fabric, the first base fabric constituting the left and right side portions in the vehicle width direction, and constitutes the other side surface portion in the vehicle width direction, A second base cloth that forms an expansion chamber between the first base cloth and an upper cloth that is joined to the upper edges of the first base cloth and the second base cloth to form an upper surface portion; The upper cloth is characterized in that the width in the vehicle width direction on the vehicle front side is wider than the width in the vehicle width direction on the vehicle rear side.
　請求項１に係る本発明では、第１基布と第２基布の上縁に接合されて上面部を形成する上部布を備え、上部布は車両後方側に対し車両前方側の車幅方向の幅が広くされているので、エアバッグの上端部を平面状にすることができ、高さ方向を高くすることなく展開幅を十分に得た状態で、乗員の斜め前方から側面にかけての部位と側面車体部材との間にエアバッグを展開させることができる。このため、斜め前方からの側面衝突を含めて、乗員の側面部分をより適切に保護することができる。 In the present invention according to claim 1, an upper cloth is formed which is joined to the upper edges of the first and second base cloths to form an upper surface portion, and the upper cloth is in the vehicle width direction on the vehicle front side with respect to the vehicle rear side. Since the width of the air bag is wide, the upper end portion of the airbag can be made flat, and in a state where the deployment width is sufficiently obtained without increasing the height direction, the portion from the oblique front to the side of the occupant And the side body member can be deployed. For this reason, a passenger | crew's side part can be protected more appropriately including the side collision from diagonally forward.
　そして、請求項２に係る本発明のサイドエアバッグ装置は、請求項１に記載のサイドエアバッグ装置において、前記エアバッグの前記上部布は、車両の前後方向に延びる折れ線で折りたたまれ、前記エアバッグの展開圧力で破断する仮止部材で仮止めされていることを特徴とする。 The side airbag device of the present invention according to claim 2 is the side airbag device according to claim 1, wherein the upper cloth of the airbag is folded along a fold line extending in the front-rear direction of the vehicle. It is temporarily fixed by the temporary fixing member which fractures | ruptures with the expansion | deployment pressure of a bag.
　請求項２に係る本発明では、上部布は、車両の前後方向に延びる折れ線で折りたたまれて仮止部材で仮止めされているので、エアバッグの展開過程で乗員と側面車体部材の間に延ばされ、その後展開圧力で仮止部材が破断して完全に展開する。このため、車両後方側に対し車両前方側の車幅方向の幅が広くされている上部布を備えたエアバッグを、乗員と側面車体部材の間に確実に展開させることができる。 In the present invention according to claim 2, since the upper cloth is folded by a fold line extending in the front-rear direction of the vehicle and temporarily fixed by the temporary fixing member, the upper cloth extends between the occupant and the side body member during the airbag deployment process. After that, the temporary fixing member is broken and completely developed by the development pressure. For this reason, the airbag provided with the upper cloth whose width in the vehicle width direction on the vehicle front side with respect to the vehicle rear side can be reliably deployed between the occupant and the side body member.
　また、請求項３に係る本発明のサイドエアバッグ装置は、請求項２に記載のサイドエアバッグ装置において、前記上部布の前記仮止部材は、索状部材による仮縫い部であることを特徴とする。 The side airbag device of the present invention according to claim 3 is the side airbag device according to claim 2, characterized in that the temporary fixing member of the upper cloth is a temporary stitching portion by a cord-like member. To do.
　請求項３に係る本発明では、索状部材（糸や細紐等）で仮縫いを行って仮縫い部とすることで上部布の折りたたみ状態を仮止めすることができる。仮縫いを行う場合、一箇所毎に個別に止めて長手方向に仮縫いを行ったり、１本の糸部材で交互に止めて長手方向に仮止めを行ったりすることができる。 In the present invention according to claim 3, the folded state of the upper cloth can be temporarily fixed by performing temporary sewing with a cord-like member (thread, thin string, etc.) to form a temporary sewing portion. When performing temporary stitching, it is possible to perform temporary stitching in the longitudinal direction by individually stopping at each position, or to perform temporary stitching in the longitudinal direction by alternately stopping with a single thread member.
　また、請求項４に係る本発明のサイドエアバッグ装置は、請求項３に記載のサイドエアバッグ装置において、前記仮止部材の前記仮縫い部は、前記車両の前後方向の縫い目の幅が異なっていることを特徴とする。 The side airbag device of the present invention according to claim 4 is the side airbag device according to claim 3, wherein the temporary stitching portion of the temporary fixing member is different in the width of the seam in the front-rear direction of the vehicle. It is characterized by being.
　請求項４に係る本発明では、車両の前後方向の縫い目の幅を異ならせることで、エアバッグの展開過程の展開状態を制御することができる。 In the present invention according to claim 4, the deployment state of the airbag deployment process can be controlled by varying the width of the seam in the longitudinal direction of the vehicle.
　また、請求項５に係る本発明のサイドエアバッグ装置は、請求項４に記載のサイドエアバッグ装置において、前記仮止部材の前記仮縫い部は、前記車両の前側の縫い目の幅が、後側の縫い目の幅よりも広くされていることを特徴とする。 The side airbag device of the present invention according to claim 5 is the side airbag device according to claim 4, wherein the temporary stitching portion of the temporary fixing member has a width of a seam on the front side of the vehicle. It is characterized by being wider than the width of the seam.
　請求項５に係る本発明では、エアバッグの展開過程で、仮縫い部が破断する前に乗員と側面車体部材の間に延ばされ、その後、展開圧力で車両の前側の縫い目が破断して乗員の斜め前方から側面にかけての部位が展開し、続いて、車両の後側の縫い目が破断して乗員の側面の部位が展開する。 In the present invention according to claim 5, in the process of deploying the airbag, it is extended between the occupant and the side body member before the temporary stitching portion breaks, and then the seam on the front side of the vehicle is broken by the deployment pressure and the occupant The part from the diagonal front to the side surface of the vehicle is developed, and subsequently, the seam on the rear side of the vehicle is broken and the side part of the occupant is developed.
　また、請求項６に係る本発明のサイドエアバッグ装置は、請求項３に記載のサイドエアバッグ装置において、前記仮止部材の前記仮縫い部は、車両幅方向、車両前後方向の一方を交互に進む刺し縫い状であることを特徴とする。 The side airbag device according to a sixth aspect of the present invention is the side airbag device according to the third aspect, wherein the temporary stitching portion of the temporary fixing member alternates one of a vehicle width direction and a vehicle longitudinal direction. It is characterized by a stab stitch that advances.
　請求項６に係る本発明では、仮縫い部が、車両幅方向、車両前後方向を交互に行き来する刺し縫い状であるので、展開過程で、索状部材が第１基布及び第２基布から抜け外れながらエアバッグが前方に延ばされ、エアバッグを確実に展開させることができる。 In the present invention according to claim 6, since the temporary stitching portion has a sewed shape that alternates between the vehicle width direction and the vehicle front-rear direction, the cord-like member is separated from the first base fabric and the second base fabric in the unfolding process. The airbag is extended forward while coming off, and the airbag can be reliably deployed.
　本発明のサイドエアバッグ装置は、斜め前方からの側面衝突を含めて、乗員の側面部分をより適切に保護することが可能になる。 The side airbag device of the present invention can more appropriately protect the side surface portion of the occupant including the side collision from diagonally forward.
本発明の一実施例に係るサイドエアバッグ装置を備えた車両の外観図である。1 is an external view of a vehicle including a side airbag device according to an embodiment of the present invention. 本発明の一実施例に係るサイドエアバッグ装置を備えたシートの側面図である。It is a side view of the sheet | seat provided with the side airbag apparatus which concerns on one Example of this invention. 本発明の一実施例に係るサイドエアバッグ装置を備えたシートの正面図である。It is a front view of the sheet | seat provided with the side airbag apparatus which concerns on one Example of this invention. エアバッグの外観図である。It is an external view of an airbag. エアバッグの分解斜視図である。It is a disassembled perspective view of an airbag. エアバッグの展開説明図である。It is expansion | deployment explanatory drawing of an airbag. インフレータのガス吹出し部の部位の詳細図である。It is detail drawing of the site | part of the gas blowing part of an inflator. 上部布の詳細図である。It is detail drawing of an upper cloth. 乗員に対するエアバッグの展開状況を説明する平面図である。It is a top view explaining the expansion | deployment condition of the airbag with respect to a passenger | crew. 側面衝突時の乗員に対するエアバッグの状態を説明する平面図である。It is a top view explaining the state of the airbag with respect to the passenger | crew at the time of a side collision. 仮止め部材の他の実施例の説明図である。It is explanatory drawing of the other Example of a temporary fix | stop member. 仮止め部材の他の実施例の説明図である。It is explanatory drawing of the other Example of a temporary fix | stop member.
　図１から図７に基づいて本発明の一実施例に係るサイドエアバッグ装置の全体の構成を説明する。図示の例は、サイドエアバッグ装置を助手席に備えた例である。 1 to 7, the overall configuration of a side airbag device according to an embodiment of the present invention will be described. The illustrated example is an example in which a side airbag device is provided in a passenger seat.
　図１には本発明の一実施例に係るサイドエアバッグ装置を備えた車両の全体を表す外観、図２にはサイドエアバッグ装置を備えたシート（エアバッグ展開）の側面視、図３にはサイドエアバッグ装置を備えたシート（エアバッグ展開）の正面視、図４には本発明の一実施例に係るサイドエアバッグ装置のエアバッグの全体を表す外観状況、図５にはエアバッグの構成部材を分解して表した斜視状況を示してある。 FIG. 1 is an external view showing the entire vehicle including a side airbag device according to an embodiment of the present invention, FIG. 2 is a side view of a seat (airbag deployment) including the side airbag device, and FIG. FIG. 4 is a front view of a seat (airbag deployment) provided with a side airbag device, FIG. 4 is an external view showing the entire airbag of the side airbag device according to one embodiment of the present invention, and FIG. The perspective view which decomposed | disassembled and represented the structural member of was shown.
　また、図６にはエアバッグの展開説明を示してあり、図６（ａ）は展開開始時におけるインフレータからのガスの噴出状況、図６（ｂ）は展開した時におけるインフレータからのガスの噴出状況である。また、図７にはインフレータのガス吹出し部の部位の詳細を示してあり、図７（ａ）は上部布が折りたたまれている時（エアバッグの展開開始時）の状況、図７（ｂ）は上部布が開かれた時（エアバッグの展開時）の状況である。 FIG. 6 shows the deployment of the airbag. FIG. 6 (a) shows the state of gas ejection from the inflator at the start of deployment, and FIG. 6 (b) shows the gas ejection from the inflator when deployed. Is the situation. FIG. 7 shows the details of the gas blowing portion of the inflator. FIG. 7 (a) shows the situation when the upper cloth is folded (when the airbag starts to be deployed), and FIG. 7 (b). Is the situation when the upper fabric is opened (when the airbag is deployed).
　図１から図３に基づいてサイドエアバッグ装置の全体を説明する。 The entire side airbag device will be described with reference to FIGS.
　図１に示すように、車両１には車両用のシートである助手席２が備えられ、助手席２のシートバック３のサイドドア４側（側面車体部材側）にはサイドエアバッグ装置５が備えられている。尚、本発明のサイドエアバッグ装置を適用する車両は、図１に示した乗用車に限らず、また、車両用のシートも助手席２に限られない。例えば、ワンボックス車の後席に適用することができ、この場合、側面車体部材としては、ウインドウ等が設けられた車体を構成するパネル部材が適用されることもある。 As shown in FIG. 1, a vehicle 1 is provided with a passenger seat 2 that is a vehicle seat, and a side airbag device 5 is provided on the side door 4 side (side body member side) of the seat back 3 of the passenger seat 2. Is provided. The vehicle to which the side airbag device of the present invention is applied is not limited to the passenger car shown in FIG. 1, and the vehicle seat is not limited to the passenger seat 2. For example, the present invention can be applied to a rear seat of a one-box vehicle. In this case, a panel member constituting a vehicle body provided with a window or the like may be applied as the side body member.
　図２、図３に示すように、助手席２のシートバック３のサイドエアバッグ装置５が作動することにより、乗員６の側面とサイドドア４の間にエアバッグ１１が展開する。これにより、衝突物７が侵入してサイドドア４が変形しても、乗員６はエアバッグ１１に保護される。エアバッグ１１の膨張室１０は、乗員６の肩部６ａに対応する第１膨張室１２と、乗員６の胸部６ｂに対応する第２膨張室１３と、乗員６の腰部６ｃに対応する第３膨張室１４とを備えている。 2 and 3, the airbag 11 is deployed between the side surface of the occupant 6 and the side door 4 by the operation of the side airbag device 5 of the seat back 3 of the passenger seat 2. Thereby, even if the collision object 7 enters and the side door 4 is deformed, the occupant 6 is protected by the airbag 11. The expansion chamber 10 of the airbag 11 includes a first expansion chamber 12 corresponding to the shoulder 6 a of the occupant 6, a second expansion chamber 13 corresponding to the chest 6 b of the occupant 6, and a third corresponding to the waist 6 c of the occupant 6. And an expansion chamber 14.
　具体的な構成は後述するが、エアバッグ１１は、展開時の平面視で、車両１の前方側（図２中左側）の車幅方向の幅が、車両１の後方側（図２中右側）の車幅方向の幅に比べて広くされている。そして、前述の通り、肩部６ａに対応する第１膨張室１２、腰部６ｃに対応する第３膨張室１４、胸部６ｂに対応する第２膨張室１３の順にエアバッグ１１が展開する。 Although the specific configuration will be described later, the airbag 11 has a width in the vehicle width direction on the front side (left side in FIG. 2) of the vehicle 1 in the plan view when deployed, and the rear side (right side in FIG. 2). ) Is wider than the width in the vehicle width direction. As described above, the airbag 11 is deployed in the order of the first expansion chamber 12 corresponding to the shoulder 6a, the third expansion chamber 14 corresponding to the waist 6c, and the second expansion chamber 13 corresponding to the chest 6b.
　これにより、乗員６の保護に対してより的確な状態でエアバッグ１１を展開させることができる。そして、車両１の後方側に対し車両１の前方側の車幅方向の幅が広いエアバッグ１１となっているので、乗員６の斜め前方から側面にかけての部位とサイドドア４との間にエアバッグ１１を展開させることができる。このため、斜め前方からの側面衝突を含めて、乗員６の側面部分をより適切に保護することができる。 Thereby, the airbag 11 can be deployed in a more accurate state with respect to the protection of the occupant 6. Since the airbag 11 is wider in the vehicle width direction on the front side of the vehicle 1 than on the rear side of the vehicle 1, the air between the side door 4 and the portion of the occupant 6 from the diagonally front side to the side surface. The bag 11 can be deployed. For this reason, the side surface portion of the occupant 6 can be more appropriately protected including a side collision from an oblique front.
　図４、図５に基づいてエアバッグ１１の構成を具体的に説明する。 The configuration of the airbag 11 will be specifically described with reference to FIGS.
　エアバッグ１１は、車幅方向の左右の一方側（図示例では車両１のサイドドア４側：図１参照）の側面部を構成する第１基布１６と、第１基布１６に対向して配され、車幅方向の左右の他方側（図示例では車両１の車室内側：図１参照）の側面部を構成し、第１基布１６との間に膨張室１０を形成する第２基布１７とが備えられている。 The airbag 11 is opposed to the first base fabric 16 and the first base fabric 16 that form side surfaces on one side of the left and right sides in the vehicle width direction (in the illustrated example, the side door 4 side of the vehicle 1; see FIG. 1). A first side cloth 16 is formed between the first side cloth 16 and the first side cloth 16 to form the expansion chamber 10 between the left and right sides in the vehicle width direction (in the illustrated example, the vehicle interior side of the vehicle 1; see FIG. 1). Two base fabrics 17 are provided.
　第１基布１６と第２基布１７はほぼ同一の形状であり、周囲を互いに接合され袋状となっている。また第１基布１６と第２基布１７は乗員６の側面を保護できるように十分な高さ、前後長さを有しており、特に乗員６の肩部６ａ、胸部６ｂ、腰部６ｃまでを覆う高さ、及び乗員６の肩部６ａ、腰部６ｃを覆う前後長さを有している。 The first base fabric 16 and the second base fabric 17 have substantially the same shape, and are joined together at the periphery to form a bag shape. Further, the first base fabric 16 and the second base fabric 17 have sufficient height and front / rear length so as to protect the side surface of the occupant 6, and in particular, up to the shoulder 6a, chest 6b, and waist 6c of the occupant 6. And the front and rear lengths covering the shoulder 6a and waist 6c of the occupant 6.
　第１基布１６と第２基布１７の上縁は上部布１８により接合され、上部布１８により上面部が形成されている。上部布１８が備えられているので、エアバッグ１１の上端部を平面状にすることができ、エアバッグ１１の高さ方向を高くすることなく展開幅を十分に確保することができる。これにより、例えば、上部からのカーテンエアバッグの展開を妨げることがない。 The upper edges of the first base fabric 16 and the second base fabric 17 are joined by the upper fabric 18, and the upper surface portion is formed by the upper fabric 18. Since the upper cloth 18 is provided, the upper end portion of the airbag 11 can be made flat, and the deployment width can be sufficiently secured without increasing the height direction of the airbag 11. Thereby, for example, the deployment of the curtain airbag from above is not hindered.
　エアバッグ１１の上部布１８の下側における膨張室１０には第１仕切布２１が設けられ、第１仕切布２１と上部布１８の間の膨張室１０に第１膨張室１２が形成される。上部布１８の下側における膨張室１０には（第１膨張室１２の下側には）第２仕切布２２が設けられ、第２仕切布２２と第１仕切布２１の間に第２膨張室１３が形成される。 A first partition cloth 21 is provided in the expansion chamber 10 below the upper cloth 18 of the airbag 11, and a first expansion chamber 12 is formed in the expansion chamber 10 between the first partition cloth 21 and the upper cloth 18. . A second partition cloth 22 is provided in the expansion chamber 10 below the upper cloth 18 (below the first expansion chamber 12), and a second expansion cloth is provided between the second partition cloth 22 and the first partition cloth 21. A chamber 13 is formed.
　第１仕切布２１、第２仕切布２２の後方には、インフレータ（後述する）の上下方向における同じ位置に、インナーチューブ（後述する）が通される切欠き部２１ｂ、２２ｂがそれぞれ設けられている。 Notches 21b and 22b through which an inner tube (described later) passes are provided at the same position in the vertical direction of the inflator (described later) behind the first partition cloth 21 and the second partition cloth 22, respectively. Yes.
　第２仕切布２２には穴２３が（３箇所）設けられ、第２仕切布２２の下側の膨張室１０に第３膨張室１４が形成される。第２膨張室１３と第３膨張室１４は第２仕切布２２で仕切られ、穴２３によりガスが流通自在となっている。 The second partition cloth 22 is provided with holes 23 (three places), and the third expansion chamber 14 is formed in the expansion chamber 10 below the second partition cloth 22. The second expansion chamber 13 and the third expansion chamber 14 are partitioned by the second partition cloth 22, and the gas can freely flow through the holes 23.
　第１膨張室１２に対応する第１基布１６には第１ベントホール１２ａが設けられ、第２膨張室１３に対応する第１基布１６には第２ベントホール１３ａが設けられ、更に、第３膨張室１４に対応する第１基布１６には第３ベントホール１４ａが設けられている。第１ベントホール１２ａ、第２ベントホール１３ａ、第３ベントホール１４ａによりエアバッグ１１の展開速度が調整される。 The first base cloth 16 corresponding to the first expansion chamber 12 is provided with a first vent hole 12a, the first base cloth 16 corresponding to the second expansion chamber 13 is provided with a second vent hole 13a, The first base fabric 16 corresponding to the third expansion chamber 14 is provided with a third vent hole 14a. The deployment speed of the airbag 11 is adjusted by the first vent hole 12a, the second vent hole 13a, and the third vent hole 14a.
　上部布１８、及び、第１仕切布２１は略同一の形状とされ、車両１（図１参照）の前方前端側（図中左側）の車幅方向の幅Ｈ１が、車両１（図１参照）の後方後端側（図中右側）の車幅方向の幅Ｈ２に比べて広くされている（Ｈ１＞Ｈ２）。つまり、上部布１８、及び、第１仕切布２１は、前方に向かうにしたがい次第に広くなっていくように形成されている。 The upper cloth 18 and the first partition cloth 21 have substantially the same shape, and the width H1 in the vehicle width direction on the front front end side (left side in the figure) of the vehicle 1 (see FIG. 1) is the vehicle 1 (see FIG. 1). ) At the rear rear end side (right side in the figure) of the vehicle width direction H2 is made wider (H1> H2). That is, the upper cloth 18 and the first partition cloth 21 are formed so as to gradually become wider toward the front.
　尚、本実施例では上部布１８及び第１仕切布２１は略同一の形状となっているが、上部布１８のみが、車両１の前方前端側（図中左側）の車幅方向の幅Ｈ１が、車両１（図１参照）の後方後端側（図中右側）の車幅方向の幅Ｈ２に比べて広くされていればよく、第１仕切布２１が第２仕切布２２と同様にほぼ長方形の形状であってもよい。つまり、少なくとも上部布１８の車両幅方向の横幅が前方に向かうにしたがい広くなるような先広形状であればよい。 In this embodiment, the upper cloth 18 and the first partition cloth 21 have substantially the same shape, but only the upper cloth 18 has a width H1 in the vehicle width direction on the front front end side (left side in the figure) of the vehicle 1. However, as long as it is wider than the width H2 in the vehicle width direction on the rear rear end side (right side in the figure) of the vehicle 1 (see FIG. 1), the first partition cloth 21 is the same as the second partition cloth 22. A substantially rectangular shape may be used. In other words, it is sufficient if the width of the upper cloth 18 in the vehicle width direction is a wide-angle shape that becomes wider as it goes forward.
　車両１（図１参照）の後方側に対し車両１（図１参照）の前方側の車幅方向の幅Ｈ１が広い上部布１８、及び、第１仕切布２１を用いているので、特に、肩部６ａ（図２参照）に対応する第１膨張室１２が、車両１（図１参照）の前方側の車幅方向の幅が広いエアバッグ１１とすることができる。 Since the upper cloth 18 and the first partition cloth 21 having a wider width H1 in the vehicle width direction on the front side of the vehicle 1 (see FIG. 1) than the rear side of the vehicle 1 (see FIG. 1) are used, The first expansion chamber 12 corresponding to the shoulder 6a (see FIG. 2) can be the airbag 11 having a wide width in the vehicle width direction on the front side of the vehicle 1 (see FIG. 1).
　エアバッグ１１の車両１（図１参照）の後方側に設けられているインナーチューブ２６は、エアバッグ１１の後端に沿って上下方向に延びているもので、インナーチューブ２６には、上端部にガス吹出し部２５ａを有するインフレータ２５が設けられている。インフレータ２５は筒状のインナーチューブ２６に覆われて（収納されて）設けられ、インナーチューブ２６は車両１（図１参照）の上下方向に延びて配されている。インナーチューブ２６の上側には上部吹出し口２６ａが設けられ、インナーチューブ２６の下側には下部吹出し口２６ｂが設けられている。 The inner tube 26 provided on the rear side of the vehicle 11 (see FIG. 1) of the airbag 11 extends in the vertical direction along the rear end of the airbag 11, and the inner tube 26 has an upper end portion. An inflator 25 having a gas blowing part 25a is provided. The inflator 25 is provided so as to be covered (contained) with a cylindrical inner tube 26, and the inner tube 26 extends in the vertical direction of the vehicle 1 (see FIG. 1). An upper outlet 26 a is provided on the upper side of the inner tube 26, and a lower outlet 26 b is provided on the lower side of the inner tube 26.
　インナーチューブ２６の上部吹出し口２６ａは第１仕切布２１に対応する位置に配され、インナーチューブ２６の下部吹出し口２６ｂは第３膨張室１４に臨んで下方に向けて配されている。 The upper outlet 26 a of the inner tube 26 is disposed at a position corresponding to the first partition cloth 21, and the lower outlet 26 b of the inner tube 26 is disposed downward facing the third expansion chamber 14.
　詳細は後述するが、第１仕切布２１は車両１（図１参照）の前後方向に延びる折れ線２１ａで谷折りに折りたたまれ、谷折り状態にある第１仕切布２１の折り返し部２１ｃ（折れ線２１ａが設けられた部位）がインナーチューブ２６の上部吹出し口２６ａよりも下方に位置されるようになっている。そして、エアバッグ１１の展開により第１仕切布２１が幅方向に開くことで、開いた第１仕切布２１がインナーチューブ２６の上部吹出し口２６ａより上方に位置し、上部吹出し口２６ａが第２膨張室１３にも連通する。 Although details will be described later, the first partition cloth 21 is folded in a valley fold along a fold line 21a extending in the front-rear direction of the vehicle 1 (see FIG. 1), and the folded portion 21c (fold line 21a) of the first partition cloth 21 in the valley fold state. Is provided below the upper outlet 26 a of the inner tube 26. Then, the first partition cloth 21 is opened in the width direction by the deployment of the airbag 11, so that the opened first partition cloth 21 is positioned above the upper outlet 26a of the inner tube 26, and the upper outlet 26a is the second outlet. The expansion chamber 13 also communicates.
　尚、第１仕切布２１を車両１（図１参照）の前後方向に延びる折れ線２１ａで山折り（タック折り）に折りたたむことも可能である。尚、後述するが、上部布１８、及び、第２仕切布２２も谷折りに折りたたまれた状態で説明してあるが、上部布１８、及び、第２仕切布２２も同様に山折り（タック折り）に折りたたむことも可能である。 In addition, it is also possible to fold the 1st partition cloth 21 in the mountain fold (tack fold) with the broken line 21a extended in the front-back direction of the vehicle 1 (refer FIG. 1). In addition, although mentioned later, although the upper cloth 18 and the 2nd partition cloth 22 were demonstrated in the state folded by the valley fold, the upper cloth 18 and the 2nd partition cloth 22 are similarly mountain-folded (tack) It is also possible to fold.
　上述したサイドエアバッグ装置５は、側面衝突が検出されることにより、インフレータ２５が作動して車両前方側に向いたガス吹出し部２５ａからガスが噴出する。インフレータ２５からガスが噴出することにより、乗員６（図３参照）とサイドドア４（図３参照）の間にエアバッグ１１が展開する。尚、上部噴出し口２６ａは、ガス吹出し部２５ａに対応して、インフレータ２５を前方に切欠いた形状となっている。 In the side airbag device 5 described above, when the side collision is detected, the inflator 25 is activated, and gas is ejected from the gas blowing portion 25a facing the front side of the vehicle. When the gas is ejected from the inflator 25, the airbag 11 is deployed between the occupant 6 (see FIG. 3) and the side door 4 (see FIG. 3). Note that the upper outlet 26a has a shape in which the inflator 25 is notched forward corresponding to the gas outlet 25a.
　図６、図７に基づいてエアバッグ１１の展開の状況を具体的に説明する。 The state of deployment of the airbag 11 will be specifically described with reference to FIGS.
　車両１の側面が衝突物７と衝突すると、衝突検知装置により衝突を検知し、車両内の制御装置にて、エアバッグ１１を膨張展開させるかを判断する。エアバッグ１１を膨張展開させると判断した場合、インフレータ２５へ作動信号が送られ、インフレータ２５が作動する。 When the side surface of the vehicle 1 collides with the colliding object 7, the collision detection device detects the collision, and the control device in the vehicle determines whether the airbag 11 is inflated and deployed. When it is determined that the airbag 11 is inflated and deployed, an activation signal is sent to the inflator 25, and the inflator 25 is activated.
　図６（ａ）、図７（ａ）に示すように、上部布１８、第１仕切布２１、第２仕切布２２がそれぞれ中心線Ｐを対称に幅方向に谷折りで折られている。特に、エアバッグ１１が折り畳まれている状態では、第１仕切布２１の折り返し部２１ｃがインフレータ２５のガス吹出し部２５ａよりも下方に位置するように配置されている。また、第２仕切布２２の穴２３も折られているため開いていない状態となっている。 As shown in FIGS. 6 (a) and 7 (a), the upper cloth 18, the first partition cloth 21, and the second partition cloth 22 are folded in valleys in the width direction symmetrically about the center line P, respectively. In particular, when the airbag 11 is folded, the folded portion 21 c of the first partition cloth 21 is disposed below the gas blowing portion 25 a of the inflator 25. Moreover, since the hole 23 of the 2nd partition cloth 22 is also folded, it is in the state which is not opened.
　そして、インフレータ２５が作動してガス吹出し部２５ａからガスが噴出すると（ガスが噴出する初期）、インナーチューブ２６の上部吹出し口２６ａから前方に向けて第１膨張室１２にガスが流入する。谷折り状態にある第１仕切布２１の折り返し部がインナーチューブ２６の上部吹出し口２６ａの下側に配されているので（第２膨張室１３と遮断されているので）、インナーチューブ２６の上部吹出し口２６ａから噴出するガスは第１膨張室１２だけに流入する。同時に、インナーチューブ２６の下部吹出し口２６ｂから第３膨張室１４にガスが流入する。 Then, when the inflator 25 is operated and gas is ejected from the gas blowing part 25a (the initial stage of gas ejection), the gas flows into the first expansion chamber 12 from the upper blowing port 26a of the inner tube 26 toward the front. Since the folded portion of the first partition cloth 21 in the valley folded state is arranged below the upper outlet 26a of the inner tube 26 (because it is blocked from the second expansion chamber 13), the upper portion of the inner tube 26 The gas ejected from the outlet 26 a flows only into the first expansion chamber 12. At the same time, gas flows into the third expansion chamber 14 from the lower outlet 26 b of the inner tube 26.
　図６（ｂ）、図７（ｂ）に示すように、インフレータ２５のガス吹出し部２５ａからガスが噴出し続けることで、折りたたまれている第１仕切布２１が幅方向に開いてインナーチューブ２６の上部吹出し口２６ａの上側に第１仕切布２１が位置し、上部吹出し口２６ａが第２膨張室１３と連通してガスが第２膨張室１３に噴出する。同時に、第３膨張室１４の内部のガスが第２仕切布２２の穴２３から第２膨張室１３に流入する。 As shown in FIGS. 6B and 7B, the gas is continuously blown from the gas blowing portion 25 a of the inflator 25, so that the folded first partition cloth 21 is opened in the width direction and the inner tube 26. The first partition cloth 21 is positioned on the upper side of the upper blowout port 26 a, and the upper blowout port 26 a communicates with the second expansion chamber 13 so that gas is blown into the second expansion chamber 13. At the same time, the gas inside the third expansion chamber 14 flows into the second expansion chamber 13 from the hole 23 of the second partition cloth 22.
　これにより、エアバッグ１１は、乗員６の肩部６ａに対応する第１膨張室１２、乗員６の腰部６ｃに対応する第３膨張室１４、乗員６の胸部６ｂに対応する第２膨張室１３の順に展開することになる。つまり、上部吹出し口２６ａにより乗員６の肩部６ａに対応する第１膨張室１２が開き、下部吹出し口２６ｂにより乗員６の腰部６ｃに対応する第３膨張室１４が開き、第１仕切布２１が開くことにより第１仕切布２１の切欠き部２１ｂ及び第２仕切布２２が開いて穴２３によって連通し、ガスが切欠き部２１ｂ及び穴２３から流入することで乗員６の胸部６ｂに対応する第２膨張室１３が開くことになる。 Thus, the airbag 11 includes a first expansion chamber 12 corresponding to the shoulder 6a of the occupant 6, a third expansion chamber 14 corresponding to the waist 6c of the occupant 6, and a second expansion chamber 13 corresponding to the chest 6b of the occupant 6. Will be expanded in the order. In other words, the first expansion chamber 12 corresponding to the shoulder 6a of the occupant 6 is opened by the upper outlet 26a, the third expansion chamber 14 corresponding to the waist 6c of the occupant 6 is opened by the lower outlet 26b, and the first partition cloth 21 is opened. The notch 21b and the second divider cloth 22 of the first partition cloth 21 are opened by the opening of the first partition cloth 21 and communicated by the hole 23, and the gas flows into the notch 21b and the hole 23 to correspond to the chest part 6b of the occupant 6. The second expansion chamber 13 is opened.
　このため、側面衝突時に、乗員６の耐性が比較的高い箇所を保護（拘束）した後に、耐性が比較的低い胸部６ｂをより適切に保護することが可能になる。 For this reason, at the time of a side collision, after protecting (restraining) a place where the occupant 6 has a relatively high resistance, the chest 6b having a relatively low resistance can be protected more appropriately.
　尚、本実施例では第２仕切布２２に穴２３を（３箇所）に設けたが、第１仕切布２１に穴２３を設け、第２仕切布２２に穴を設けない構成にすることも可能である。つまり、本実施例での第１仕切布２１と第２仕切布２２が逆となっていてもよく、穴２３を設ける構成は本実施例の構成に限らない。 In this embodiment, the holes 23 are provided in the second partition cloth 22 (in three places). However, the holes 23 may be provided in the first partition cloth 21 and the holes may not be provided in the second partition cloth 22. Is possible. That is, the 1st partition cloth 21 and the 2nd partition cloth 22 in a present Example may be reverse, and the structure which provides the hole 23 is not restricted to the structure of a present Example.
　上述したサイドエアバッグ装置５は、肩部６ａに対応する第１膨張室１２が、車両１の前方側の車幅方向の幅が広いエアバッグ１１となっているので、展開時に乗員６の肩部６ａとサイドドア４との隙間が狭い場合、エアバッグ１１が乗員６の肩部６ａより前方へ到達しない虞がある。そのため、まず前方に向かって幅が広いエアバッグ１１（特に第１膨張室１２）を進ませ、時間差をつけて遅らせて幅方向を膨張させることで、乗員６の肩部６ａを通り抜け、適切に展開させることが必要である。このため、さらに幅方向に開く前に前方側に延びるようにエアバッグ１１の展開が制御されている。 In the side airbag device 5 described above, since the first expansion chamber 12 corresponding to the shoulder 6a is the airbag 11 having a wide width in the vehicle width direction on the front side of the vehicle 1, the shoulder of the occupant 6 when deployed. When the gap between the portion 6 a and the side door 4 is narrow, the airbag 11 may not reach the front side from the shoulder portion 6 a of the occupant 6. Therefore, first, the airbag 11 (especially the first expansion chamber 12) having a wider width is advanced toward the front, and the width direction is inflated with a time lag so as to pass through the shoulder 6a of the occupant 6 and appropriately It is necessary to develop. For this reason, the deployment of the airbag 11 is controlled so as to extend to the front side before it is further opened in the width direction.
　即ち、谷折りされている（または、タック折りされている）上部布１８は、仮止部材で仮止めされている。このため、エアバッグ１１は展開過程で乗員６とサイドドア４の間に延ばされ、その後、展開圧力で仮止部材が破断して完全に展開する。このため、車両の後方側に対し車両の前方側の車幅方向の幅が広くされているエアバッグ（第１膨張室１２）を、乗員６とサイドドア４の間により適切に展開させることができる。 That is, the upper cloth 18 that is valley-folded (or tuck-folded) is temporarily fixed by a temporary fixing member. For this reason, the airbag 11 is extended between the passenger | crew 6 and the side door 4 in the expansion | deployment process, Then, a temporary fixing member fractures | ruptures with expansion | deployment pressure, and it expand | deploys completely. For this reason, the airbag (first expansion chamber 12) having a width in the vehicle width direction on the front side of the vehicle wider than the rear side of the vehicle can be more appropriately deployed between the occupant 6 and the side door 4. it can.
　図８から図１０に基づいて上述したサイドエアバッグ装置５におけるエアバッグ１１の展開状況を説明する。 The deployment state of the airbag 11 in the side airbag device 5 described above will be described with reference to FIGS.
　図８には上部布の詳細状況を示してあり、図８（ａ）は折りたたみ状態を仮縫い部で仮止めした状態、図８（ｂ）は折りたたみが一部開いた状態（エアバッグの展開途中）である。図９には乗員に対するエアバッグの展開状況を説明する平面を示してあり、図９（ａ）は展開開始時、図９（ｂ）は展開過程時、図９（ｃ）は展開完了時である。また、図１０には側面衝突時の乗員に対するエアバッグの状態を説明する平面を示してある。 FIG. 8 shows a detailed situation of the upper cloth, FIG. 8 (a) shows a state where the folded state is temporarily fixed by a temporary stitching portion, and FIG. 8 (b) shows a state where the folding is partially opened (while the airbag is being deployed). ). FIG. 9 shows a plane for explaining the deployment state of the airbag with respect to the occupant. FIG. 9A shows the start of deployment, FIG. 9B shows the deployment process, and FIG. 9C shows the deployment completed. is there. FIG. 10 shows a plane for explaining the state of the airbag with respect to the occupant at the time of a side collision.
　図８に基づいて上部布１８の仮止部材を説明する。 A temporary fixing member of the upper cloth 18 will be described with reference to FIG.
　図８（ａ）に示すように、本実施例の仮止部材は、索状部材、例えば、糸部材３１（糸）で構成されている。糸部材３１を、上部布１８と第１基布１６、第２基布１７の車両前後方向に延びる接合箇所間の複数箇所にそれぞれ個別に通し、一箇所毎に上部布１８を折った折れ線１８ａ（中心線Ｐ）に直交するように糸部材３１を止めて仮縫い部３２としている。つまり、第１基布１６、第２基布１７間を仮縫いしているともいえる。そして、仮縫い部３２は、車両１（図１参照）の前後方向の縫い目の幅が異なっており、前側の縫い目の幅ｈ１が、後側の縫い目の幅ｈ２よりも広くされている。 As shown in FIG. 8A, the temporary fixing member of the present embodiment is constituted by a cord-like member, for example, a thread member 31 (thread). The thread member 31 is individually passed through a plurality of locations between joint portions of the upper fabric 18, the first base fabric 16, and the second base fabric 17 extending in the vehicle front-rear direction, and a broken line 18 a is formed by folding the upper fabric 18 at each location. The thread member 31 is stopped so as to be orthogonal to the (center line P) to form a temporary stitching portion 32. That is, it can be said that the first base fabric 16 and the second base fabric 17 are temporarily sewn. The temporary stitching portion 32 has a different stitch width in the front-rear direction of the vehicle 1 (see FIG. 1), and the front stitch width h1 is wider than the rear stitch width h2.
　このため、仮縫い部３２が破断しない状態で乗員６とサイドドア４の間に展開し、図８（ｂ）に示すように、エアバッグ１１の展開過程で、縫い目の幅が広い前側の縫い目から破断して展開する。 For this reason, the temporary seam 32 is deployed between the occupant 6 and the side door 4 without breaking, and as shown in FIG. 8 (b), in the process of deploying the airbag 11, the seam is wide from the front seam. Break and unfold.
　図９に基づいてエアバッグ１１の展開状況を説明する。 The deployment state of the airbag 11 will be described based on FIG.
　図９（ａ）に示すように、展開初期の段階で、仮縫い部３２が破断する前に乗員６とサイドドア４の間に延ばされる。その後、図９（ｂ）に示すように、展開圧力で車両１の前側の縫い目が破断して乗員６の斜め前方から側面にかけての部位が展開する。続いて、図９（ｃ）に示すように、車両の後側の縫い目が破断して乗員の側面の部位が展開する。 As shown in FIG. 9A, in the initial stage of deployment, the temporary stitching portion 32 is extended between the occupant 6 and the side door 4 before breaking. Thereafter, as shown in FIG. 9B, the seam on the front side of the vehicle 1 is broken by the development pressure, and the portion of the occupant 6 extending from the diagonally front side to the side surface is developed. Subsequently, as shown in FIG. 9C, the seam on the rear side of the vehicle is broken, and the side portion of the occupant is developed.
　仮縫い部３２を設けてエアバッグ１１の展開過程の展開状態を制御しているので、車両の前方側の車幅方向の幅が広くされているエアバッグ（第１膨張室１２）を、乗員６とサイドドア４の間により適切に展開させることができる。 Since the provisional stitching portion 32 is provided to control the deployment state of the airbag 11 during the deployment process, the airbag (first expansion chamber 12) having a wider width in the vehicle width direction on the front side of the vehicle is attached to the occupant 6. And the side door 4 can be more appropriately deployed.
　つまり、乗員６の肩部６ａとサイドドア４との隙間が狭い場合、エアバッグ１１が乗員６の肩部６ａより前方へ到達し、乗員６とサイドドア４の間にエアバッグ１１を展開させることができる。特に、前方に向かうにしたがい縫い目の幅を広くすることで、前方の縫い目が破断しやすくなり、幅広となっている前方部分を効果的に展開させることが可能となる。 That is, when the clearance between the shoulder 6 a of the occupant 6 and the side door 4 is narrow, the airbag 11 reaches the front from the shoulder 6 a of the occupant 6, and the airbag 11 is deployed between the occupant 6 and the side door 4. be able to. In particular, by increasing the width of the seam in the forward direction, the front seam is easily broken, and the wide front portion can be effectively deployed.
　尚、仮縫い部３２の縫い目の幅を前後方向で均等にしたり、前方側の幅を狭くしたりし、前方側（幅が広い側）を弱く、後方側（幅が狭い側）にいくにしたがい強く縫い合わせて仮止めをすることも可能である。 In addition, the width of the seam of the temporary stitching portion 32 is made uniform in the front-rear direction, the width on the front side is narrowed, the front side (the wide side) is weakened, and the rear side (the narrow side) is advanced. It is also possible to sew tightly and temporarily fix.
　車両の前方側の車幅方向の幅が広くされているエアバッグ（第１膨張室１２）を、乗員６とサイドドア４の間に展開させることで、図１０に示すように、サイドドア４との距離が比較的短い乗員６の肩部６ａの斜め前方のエアバッグ１１の幅を広くすることができる。このため、斜め前方から衝突物７が侵入しても、サイドドア４に近い位置にある肩部６ａをより適切に保護することができる。 As shown in FIG. 10, the side door 4 is expanded between the occupant 6 and the side door 4 by deploying the airbag (first expansion chamber 12) widened in the vehicle width direction on the front side of the vehicle. The width of the airbag 11 diagonally forward of the shoulder 6a of the occupant 6 that is relatively short can be increased. For this reason, even if the collision object 7 invades from diagonally forward, the shoulder portion 6a located near the side door 4 can be more appropriately protected.
　図１１、図１２に基づいて仮止め部材の他の実施例を説明する。 Another embodiment of the temporary fixing member will be described with reference to FIGS.
　図１１には索状部材として１本の紐部材で仮止めを行う仮止め部材の状況を示してあり、図１１（ａ）は折りたたみ状態を仮止めした状態、図１１（ｂ）は折りたたみが一部開いた状態（エアバッグの展開途中）、図１１（ｃ）は展開完了時である。 FIG. 11 shows a state of a temporary fixing member that temporarily fixes with a single string member as a cord-like member. FIG. 11 (a) is a state in which the folded state is temporarily fixed, and FIG. FIG. 11C shows a partially opened state (while the airbag is being deployed), when deployment is completed.
　図１２には面ファスナーで仮止めを行う仮止め部材の状況を示してあり、図１２（ａ）は車両の前後方向で同じ幅の面ファスナーを用いた状態、図１２（ｂ）は車両の前後方向で前側の幅が広い面ファスナーを用いた状態、図１２（ｃ）は車両の前後方向で後側の幅が広い面ファスナーを用いた状態である。 FIG. 12 shows the situation of a temporary fixing member that temporarily fixes with a hook-and-loop fastener, FIG. 12 (a) shows a state in which a hook-and-loop fastener having the same width is used in the longitudinal direction of the vehicle, and FIG. FIG. 12C shows a state using a surface fastener having a wide front side in the front-rear direction, and FIG. 12C shows a state using a surface fastener having a wide rear side in the front-rear direction of the vehicle.
　図１１に示した仮止め部材は、１本の細い紐部材３５（細紐）が車両の前後方向の一方に（前方から後方に）、前後方向、車幅方向に交互に縫い進められて長手方向に仮止めが行われている。紐部材３５の前方端部は上部布１８と第１基布１６の接合箇所に締結されており（第２基布１７でも可）、後方端部はエアバッグの展開によって破断し（第１基布１６または第２基布１７と上部布１８の接合箇所から抜け外れ）、締結が解除されるようになっている。 In the temporary fixing member shown in FIG. 11, one thin string member 35 (narrow string) is sewn to one side in the front-rear direction of the vehicle (from the front to the rear) alternately in the front-rear direction and the vehicle width direction. Temporarily fixed in the direction. The front end portion of the string member 35 is fastened to the joint portion between the upper cloth 18 and the first base fabric 16 (the second base fabric 17 may be used), and the rear end portion is broken by the deployment of the airbag (the first base fabric). The cloth 16 or the second base cloth 17 and the upper cloth 18 are detached from the joint portion), and the fastening is released.
　図１１（ａ）に示すように、紐部材３５により、上部布１８を挟んで第１基布１６、第２基布１７の前後方向に延びる刺し縫い状（ランニングステッチ状）とされている。即ち、紐部材３５が第１基布１６または第２基布１７と上部布１８の接合箇所を車幅方向で行き来して、前後方向の一方に進むようになみ縫い（ぐし縫い）され、縫い目の幅が均等にされて仮止めされている。 As shown in FIG. 11A, the string member 35 forms a sewed stitch shape (running stitch shape) extending in the front-rear direction of the first base fabric 16 and the second base fabric 17 with the upper fabric 18 interposed therebetween. That is, the string member 35 is stitched so as to go back and forth in the vehicle width direction at the junction between the first base fabric 16 or the second base fabric 17 and the upper fabric 18 and to advance in one of the front and rear directions. The widths of these are made uniform and temporarily fixed.
　図１１（ｂ）に示すように、エアバッグ１１の展開過程で車両の後方側の紐部材３５が車幅方向及び前後方向で仮縫いされた第１基布１６または第２基布１７と上部布１８の接合箇所を抜け外れながら前方に延ばされ、図１１（ｃ）に示すように、エアバッグ１１の展開時には１本の紐部材３５が延ばされた状態になる。 As shown in FIG. 11 (b), the first base fabric 16 or the second base fabric 17 and the upper fabric in which the string member 35 on the rear side of the vehicle is temporarily sewn in the vehicle width direction and the front-rear direction in the process of deploying the airbag 11. As shown in FIG. 11 (c), one string member 35 is extended when the airbag 11 is deployed.
　尚、紐部材３５の長さは、上部布１８をより適切に開くために、上部布１８前方の幅の長さよりも短くなっている事が好ましい。 In addition, it is preferable that the length of the string member 35 is shorter than the length of the width in front of the upper cloth 18 in order to open the upper cloth 18 more appropriately.
　このため、展開の過程で乗員６とサイドドア４の間にエアバッグ１１（第１膨張室１２）をより適切に展開させることができる。 Therefore, the airbag 11 (first expansion chamber 12) can be more appropriately deployed between the occupant 6 and the side door 4 in the process of deployment.
　図１２に示した仮止め部材は、面ファスナー４１により、折りたたみ状態が仮止めされている。 The temporarily fixed member shown in FIG. 12 is temporarily fixed in a folded state by a hook-and-loop fastener 41.
　図１２（ａ）に示した面ファスナー４１ａは、車両の前後方向で同一の幅の面ファスナー４１ａとなっている。面ファスナー４１の前後方向の幅が同一であるため、接合面積が均一になり、エアバッグ１１が前方に延ばされる過程で後方から徐々に展開する。 The hook-and-loop fastener 41a shown in FIG. 12 (a) is a hook-and-loop fastener 41a having the same width in the longitudinal direction of the vehicle. Since the front and rear widths of the hook-and-loop fastener 41 are the same, the joining area becomes uniform, and the airbag 11 is gradually deployed from the rear in the process of being extended forward.
　図１２（ｂ）に示した面ファスナー４１ｂは、車両の前後方向で前側の幅が大きい面ファスナー４１ｂとなっている。前側の幅が大きい面ファスナー４１ｂとなっているため、前側の接合面積が広くなり、エアバッグ１１が展開する過程でより適切に前方に延ばされる。 The hook-and-loop fastener 41b shown in FIG. 12 (b) is a hook-and-loop fastener 41b having a large front width in the front-rear direction of the vehicle. Since the front fastener 41b has a large width on the front side, the joining area on the front side is increased, and the airbag 11 is more appropriately extended forward in the process of deployment.
　図１２（ｃ）に示した面ファスナー４１ｃは、車両の前後方向で後側の幅が大きい面ファスナー４１ｃとなっている。後側の幅が大きい面ファスナー４１ｃとなっているため、前側の接合面積が狭くなり、エアバッグ１１が延びて展開する過程で前方側をより適切に展開させることができる。 The hook-and-loop fastener 41c shown in FIG. 12 (c) is a hook-and-loop fastener 41c having a large rear width in the longitudinal direction of the vehicle. Since the hook-and-loop fastener 41c has a large rear width, the front-side joining area is reduced, and the front side can be more appropriately deployed in the process of extending and deploying the airbag 11.
　面ファスナー４１を用いて接合面積を調整することにより、簡単に、展開状態を任意に制御することが可能になる。 By adjusting the bonding area using the hook-and-loop fastener 41, the unfolded state can be easily controlled arbitrarily.
　上述したサイドエアバッグ装置５は、エアバッグ（第１膨張室１２）１１が、車両の前方側の車幅方向の幅が広くされているので、乗員６の肩部６ａの斜め前方のエアバッグ１１の幅を広くすることができる。このため、斜め前方から衝突物７が侵入しても、サイドドア４に近い位置にある肩部６ａをより適切に保護することができる。 In the above-described side airbag device 5, the airbag (first expansion chamber 12) 11 has a wider width in the vehicle width direction on the front side of the vehicle. 11 can be widened. For this reason, even if the collision object 7 invades from diagonally forward, the shoulder portion 6a located near the side door 4 can be more appropriately protected.
　そして、仮止め部を設けてエアバッグ１１の展開過程の展開状態を制御しているので、乗員６の肩部６ａとサイドドア４との隙間が狭い場合でも、車両の前方側の車幅方向の幅が広くされているエアバッグ１１（第１膨張室１２）を乗員６の肩部６ａより前方へ到達させ、乗員６とサイドドア４の間により適切にエアバッグ１１を展開させることができる。 Since the provisional fastening portion is provided to control the deployment state of the airbag 11 in the deployment process, the vehicle width direction on the front side of the vehicle even when the clearance between the shoulder 6a of the occupant 6 and the side door 4 is narrow The airbag 11 (the first expansion chamber 12) having a wide width can be made to reach the front from the shoulder 6 a of the occupant 6, and the airbag 11 can be deployed more appropriately between the occupant 6 and the side door 4. .
　本発明は、車両のシート側方にエアバッグが展開されるサイドエアバッグ装置の産業分野で利用することができる。 The present invention can be used in the industrial field of a side airbag device in which an airbag is deployed on the side of a vehicle seat.
　　１　車両
　　２　助手席
　　３　シートバック
　　４　サイドドア
　　５　サイドエアバッグ装置
　　６　乗員
　　７　衝突物
　１０　膨張室
　１１　エアバッグ
　１２　第１膨張室
　１３　第２膨張室
　１４　第３膨張室
　１６　第１基布
　１７　第２基布
　１８　上部布
　２１　第１仕切布
　２２　第２仕切布
　３１　糸部材
　３５　紐部材
　４１　面ファスナー DESCRIPTION OF SYMBOLS 1 Vehicle 2 Passenger seat 3 Seat back 4 Side door 5 Side airbag apparatus 6 Crew 7 Colliding object 10 Expansion chamber 11 Air bag 12 First expansion chamber 13 Second expansion chamber 14 Third expansion chamber 16 First base fabric 17 Second Base cloth 18 Upper cloth 21 First partition cloth 22 Second partition cloth 31 Thread member 35 String member 41 Surface fastener

Claims (6)

  1. 　車両用のシートに設けられ、乗員と側面車体部材との間にエアバッグが展開するサイドエアバッグ装置において、
    　前記エアバッグは、
    　車幅方向の左右の一方側の側面部を構成する第１基布と、
    　前記第１基布に対向して配され、前記車幅方向の他方側の側面部を構成し、前記第１基布との間に膨張室を形成する第２基布と、
    　前記第１基布及び前記第２基布の上縁に接合されて上面部を形成する上部布とを備え、
    　前記上部布は、車両前方側の前記車幅方向の幅が車両後方側の前記車幅方向の幅に比べて広くされている
    　ことを特徴とするサイドエアバッグ装置。     In a side airbag device provided on a vehicle seat and in which an airbag is deployed between an occupant and a side body member,
    The airbag is
    A first base fabric constituting side portions on one side of the left and right in the vehicle width direction;
    A second base fabric disposed opposite to the first base fabric, constituting a side surface portion on the other side in the vehicle width direction, and forming an expansion chamber with the first base fabric;
    An upper cloth joined to upper edges of the first base cloth and the second base cloth to form an upper surface part;
    The side airbag device characterized in that the upper cloth has a width in the vehicle width direction on the vehicle front side that is wider than a width in the vehicle width direction on the vehicle rear side.
  2. 　請求項１に記載のサイドエアバッグ装置において、
    　前記エアバッグの前記上部布は、
    　車両の前後方向に延びる折れ線で折りたたまれ、前記エアバッグの展開圧力で破断する仮止部材で仮止めされている
    　ことを特徴とするサイドエアバッグ装置。     In the side airbag device according to claim 1,
    The upper fabric of the airbag is
    A side airbag device, wherein the side airbag device is folded by a fold line extending in the front-rear direction of the vehicle and temporarily fixed by a temporary fixing member that is broken by a deployment pressure of the airbag.
  3. 　請求項２に記載のサイドエアバッグ装置において、
    　前記上部布の前記仮止部材は、索状部材による仮縫い部である
    　ことを特徴とするサイドエアバッグ装置。     In the side airbag device according to claim 2,
    The side airbag device, wherein the temporary fixing member of the upper cloth is a temporary sewing portion formed by a cord-like member.
  4. 　請求項３に記載のサイドエアバッグ装置において、
    　前記仮止部材の前記仮縫い部は、
    　前記車両の前後方向の縫い目の幅が異なっている
    　ことを特徴とするサイドエアバッグ装置。     In the side airbag device according to claim 3,
    The temporary stitching portion of the temporary fixing member is
    The side airbag device characterized in that the widths of the seams in the front-rear direction of the vehicle are different.
  5. 　請求項４に記載のサイドエアバッグ装置において、
    　前記仮止部材の前記仮縫い部は、
    　前記車両の前側の縫い目の幅が、後側の縫い目の幅よりも広くされている
    　ことを特徴とするサイドエアバッグ装置。     In the side airbag device according to claim 4,
    The temporary stitching portion of the temporary fixing member is
    The side airbag device, wherein a width of a front seam of the vehicle is wider than a width of a rear seam.
  6. 　請求項３に記載のサイドエアバッグ装置において、
    　前記仮止部材の前記仮縫い部は、
    　車両幅方向、車両前後方向の一方を交互に進む刺し縫い状である
    　ことを特徴とするサイドエアバッグ装置。     In the side airbag device according to claim 3,
    The temporary stitching portion of the temporary fixing member is
    A side airbag device characterized by having a sewed shape that alternately advances in one of the vehicle width direction and the vehicle front-rear direction.
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Publication number Priority date Publication date Assignee Title
WO2017163898A1 (en) * 2016-03-22 2017-09-28 タカタ株式会社 Pedestrian airbag device and automobile
JP6502577B2 (en) * 2016-03-25 2019-04-17 オートリブ ディベロップメント エービー Curtain airbag device
CN113825678B (en) * 2019-05-31 2023-07-04 奥托立夫开发公司 Side airbag device and method for manufacturing side airbag device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503157B1 (en) * 1970-08-22 1975-01-31
JPH05162598A (en) * 1991-12-13 1993-06-29 Toyota Motor Corp Side air bag device
WO2010008060A1 (en) * 2008-07-17 2010-01-21 本田技研工業株式会社 Vehicle airbag and method of manufacturing the same
WO2013014773A1 (en) * 2011-07-27 2013-01-31 トヨタ自動車株式会社 Side airbag and method for manufacturing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503157B1 (en) * 1970-08-22 1975-01-31
JPH05162598A (en) * 1991-12-13 1993-06-29 Toyota Motor Corp Side air bag device
WO2010008060A1 (en) * 2008-07-17 2010-01-21 本田技研工業株式会社 Vehicle airbag and method of manufacturing the same
WO2013014773A1 (en) * 2011-07-27 2013-01-31 トヨタ自動車株式会社 Side airbag and method for manufacturing same

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