JP5853916B2 - Airbag device - Google Patents

Description

  The present invention is mounted on a vehicle configured by arranging a plurality of seats side by side and seated on a remote side seat far from the impact force acting side when an impact force is applied from one side of the seats in the juxtaposed direction. The present invention relates to an airbag device capable of protecting a side occupant.

  Conventionally, as an airbag device for protecting a detachable occupant, the airbag device is folded and stored in a backrest portion of the detachable seat and protrudes toward the front of the detachable occupant seated on the separate seat. There is an air bag that inflates as described above, and a support member that supports the air bag when the inflation is completed is disposed in the backrest portion. In this airbag device, the airbag is a substantially flat plate that is positioned on the side of the impact force acting side in the seat frame that is disposed in the backrest portion, and that is disposed along a direction that is substantially orthogonal to the juxtaposed direction of the seats. A bag body that is attached to the vertical frame portion and inflates by inflating the inflation gas and a tether that regulates the position of the bag body when the inflation is completed (for example, a patent) (See FIG. 5 of Document 1).

JP 2008-302897 A

  However, in this conventional airbag device, the tether is arranged on the side of the separated side away from the impact force acting side in the bag body at the time of completion of inflation, but one end side is disposed on the bag body at the time of completion of inflation. The other end side is arranged at a position between the vertical frame portion and the bag body, and is attached to the vertical frame portion. Therefore, when the inflation of the airbag is completed, the tether covers the spaced side surface of the bag body without any gap, and the tether regulates the movement of the bag body toward the impact force acting side when the inflation is completed. In terms, it was not enough. Also, if the length of the tether is set to be short, the bag body may inflate as if it is bent, and the inflated bag body accurately moves the occupant on the separated side moving to the impact force acting side. In some cases, it could not be protected.

  The present invention solves the above-described problems, and an object of the present invention is to provide an airbag device that can accurately protect a occupant on the separated side by an inflated airbag.

An airbag device according to the present invention is mounted on a vehicle configured by arranging a plurality of seats side by side, and when an impact force is applied from one side of the seats in the side-by-side direction, the remote side is far from the impact force application side. It is configured to protect the remote occupant seated in the seat,
The seat is folded and stored in the backrest portion of the separated seat, and inflated so as to protrude toward the front of the separated occupant seated in the separated seat by allowing the inflation gas to flow inside. An airbag,
An inflator for supplying inflation gas to the airbag;
A support member that is disposed in the backrest portion and supports the airbag when the inflation is completed;
With
Airbag
In the seat frame disposed in the backrest portion, the impact force acting side surface of the substantially flat vertical frame portion disposed along the direction substantially perpendicular to the side-by-side direction of the seat, located on the side surface on the impact force acting side. And a bag body that is attached and inflated by allowing an inflating gas to flow inside,
A tether that regulates the position of the bag body when the inflation is completed;
An airbag device comprising:
The bag body
While it is configured to have an inner wall portion disposed on the inner side that becomes the separation side occupant side when the inflation is completed, and an outer wall portion disposed on the outer side,
An inflator is arranged inside the base part at the time of completion of expansion, and using a mounting bolt for attaching the inflator to the vertical frame part, a mounting part attached to the vertical frame part is arranged together with the inflator. And
The support member is formed to extend from the vertical frame portion to the impact force acting side, and has an end surface support portion that supports the base portion side end surface of the bag body at the time of completion of expansion, and is configured.
A mounting hole for inserting a mounting bolt is formed in the inner wall portion of the mounting portion.
Tether
In the bag body at the time of completion of expansion, the bag body is disposed on the inner wall portion side that is a separated side surface away from the impact force acting side, and one end side is connected to the front end side along the protruding direction in the bag body at the time of completion of expansion. the other end, using the mounting bolts of the inflator, the separation side of the vertical frame, with are that mounted configuration,
On the other end side, it is configured by arranging an insertion hole through which the mounting bolt can be inserted,
The separation distance between the connection portion with the bag body and the insertion hole is set to be smaller than the separation distance between the connection portion and the mounting hole in a state where the bag body is flattened, in the protruding direction of the bag body at the completion of the inflation. It is comprised so that the movement to the impact-force action side of the front-end | tip side along may be controlled.

  In the airbag device of the present invention, the tether that regulates the position of the bag body at the completion of the inflation is connected to the distal end side in the protruding direction of the bag body on one side of the separation side surface of the bag body at the completion of the inflation, The other end side is attached to the separated side surface of the vertical frame portion to which the bag body is attached. Since the bag body itself is configured to be attached to the impact force acting side surface of the vertical frame portion, in the airbag device of the present invention, the attachment portion to the vertical frame portion of the bag body that has been inflated, and the tether The vertical frame portion is interposed between the end side and the end side. That is, in the airbag device of the present invention, the attachment position of the tether to the vertical frame portion is compared with the conventional airbag device from the plate thickness of the vertical frame portion, the attachment position of the bag body, and the occupant side Since the bag body that has been inflated receives the occupant on the remote side, the tether can easily resist the movement of the bag body that directs the tip side toward the impact acting direction. Thus, the tether can accurately regulate the movement of the front end side to the impact force acting side along the protruding direction of the bag main body when the inflation is completed.

  Further, in the airbag device of the present invention, the base-side end surface of the bag body at the completion of the inflation is supported by the end surface support portion of the support member formed so as to extend from the vertical frame portion to the impact force acting side. It is. Therefore, when the airbag is completely inflated, the impact force acting side is set so that the bag body that receives the separated occupant moving toward the impact force acting side rotates around the attachment portion to the vertical frame portion. When it is going to move, the base part side end face can be supported by the end face support part, such rotational movement can be restricted, and the bag body can be prevented from moving away from the backrest part. As a result, it is possible to accurately receive the distant passenger.

  Therefore, in the airbag apparatus according to the present invention, the separated side occupant can be accurately protected by the inflated airbag.

  Further, in the airbag device of the present invention, a protruding portion that protrudes toward the separation side and pushes the intermediate portion of the tether toward the separation side on the distal end side along the protruding direction of the airbag in the support member or the side portion, If it is set as the structure to arrange | position, when expansion | swelling of a bag main body will be completed, it will become an aspect which a tether itself is bent so that it may protrude in the separation side passenger | crew side by a protrusion part, and a length dimension is shortened substantially. Therefore, it is preferable that the tether can more smoothly suppress the movement of the front end side to the impact force acting side along the protruding direction of the bag body when the inflation is completed.

1 is a side view of a seat on which an airbag device according to an embodiment of the present invention is mounted. It is a partial expanded sectional view of the II-II site | part of FIG. It is a top view of the state where the air bag used for the air bag device of an embodiment was developed flat. FIG. 4 is a partially enlarged cross-sectional view of the IV-IV part in FIG. 3. FIG. 4 is a plan view of the airbag of FIG. 3 in a state in which a bag body and a tether are arranged. In the airbag apparatus of embodiment, it is a side view which shows the state which the airbag completed inflation. In the airbag apparatus of embodiment, it is the schematic seen from the vehicle front side which shows the state which the airbag completed the expansion | swelling. In the airbag apparatus of embodiment, it is a schematic cross-sectional view along the front-back direction which shows the state which the airbag completed inflation. In the airbag apparatus using the support member of another form, it is a schematic cross-sectional view along the front-back direction which shows the state which the airbag completed inflation. It is a side view which shows the state which the airbag completed the expansion | swelling in the airbag apparatus using the airbag of another form. In the airbag apparatus using the airbag of FIG. 10, it is the schematic seen from the vehicle front side which shows the state which the airbag completed the expansion | swelling.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the embodiment, the front-rear, up-down, left-right directions coincide with the front-rear, up-down, left-right directions of the vehicle unless otherwise specified.

  In the embodiment, as shown in FIG. 7, in a vehicle V including a driver seat DS and a passenger seat PS arranged side by side in the left-right direction, a case where a side collision occurs from the left LW (passenger seat PS side) Take an example and explain. That is, in the embodiment, the driver's seat DS positioned on the right RW is a separate seat far from the collision side (impact force acting side), and the passenger seat PS positioned on the left LW is the collision side (impact force acting side). An example of an airbag device M that protects the driver DP seated in the driver seat DS as a close-side occupant as a close-side passenger seat will be described.

  As shown in FIG. 1, the driver seat DS on which the airbag apparatus M is mounted includes a seat portion 1, a backrest portion 2 that extends upward from the rear end side of the seat portion 1, and an upper end from the upper end of the backrest portion 2. And a projecting headrest 7.

  As shown in FIGS. 1 and 2, the backrest 2 is configured to include a seat frame 3 made of a sheet metal material and a cushion 6 disposed so as to cover the periphery of the seat frame 3. The seat frame 3 is arranged in a substantially inverted U shape when viewed from the front-rear direction side from the left and right edge sides and the upper edge side of the backrest portion 2. In the embodiment, the seat frame 3 has an impact force action. The airbag device M is attached to the left vertical frame portion 4 located on the left side LW which is the side. The left vertical frame portion 4 has a substantially flat plate shape and is disposed substantially in the direction substantially perpendicular to the direction in which the seats are juxtaposed, that is, substantially along the front-rear direction, and is disposed over substantially the entire upper and lower portions of the backrest portion 2. ing. Specifically, in the case of the embodiment, the left vertical frame portion 4 is configured to be wide in the front-rear direction. In the case of the embodiment, as shown in FIG. 2, the airbag 16 is folded and stored in a gap formed between the left vertical frame portion 4 of the seat frame 3 and the cushion 6 in the backrest portion 2. ing. An outer skin (not shown) is disposed on the outer surface side of the cushion 6 of the backrest 2, and this outer skin is accompanied by a breakage of a part of the cushion 6 when the airbag 16 is deployed and inflated. A part will be broken and the bag main body 17 will protrude ahead (refer the dashed-two dotted line 8 of FIG. 2).

  The airbag device M is disposed on the side surface side of the left side LW (the left side surface 4a side of the left vertical frame portion 4) that is the impact force acting side of the driver seat DS, and as shown in FIGS. An airbag 16 that is folded and stored in the backrest 2 of the seat DS, an inflator 10 that supplies inflation gas to the airbag 16, and an airbag 16 that is disposed in the backrest 2 and supports the airbag 16 when inflation is completed. And a supporting member 26.

  As shown in FIGS. 1, 2, and 5, the inflator 10 includes a substantially cylindrical main body 11 and a mounting bracket 12 that is disposed so as to cover the outer peripheral side of the main body 11. The main body 11 is arranged so that the longitudinal direction thereof is substantially along the left vertical frame portion 4. In the case of the embodiment, the main body 11 is provided on the columnar large diameter portion 11 a and the upper end side of the large diameter portion 11 a. A small-diameter portion 11b having a gas discharge port 11c, and a lead wire 11d electrically connected to an airbag operation circuit (not shown) is connected to the lower end side of the large-diameter portion 11a. The mounting bracket 12 includes a substantially cylindrical holding portion 12a capable of holding the main body 11, and a mounting bolt 12b protruding from the holding portion 12a to the right RW (left vertical frame portion 4 side). The mounting bolts 12b are formed at two locations along the axial direction of the holding portion 12a.

  In the case of the embodiment, the inflator 10 attaches the airbag 16, which will be described later, so that the mounting bolt 12 b protrudes from a mounting hole 19, which will be described later, formed in the airbag 16 and the lead wire 11 d protrudes to the outside. The left and right side surfaces of the left vertical frame portion 4 together with the bag main body 17 by fixing the mounting bolts 12b protruding from the bag main body 17 from the left vertical frame portion 4 and fastening the nut 13 while being housed in the portion 18. It is the structure attached to 4a. Specifically, as shown in FIG. 2, the inflator 10 is provided in the vicinity of the front edge of the left vertical frame portion 4 by providing a gap between an end surface support portion 28 (described later) of the support member 26 disposed on the rear side. It is attached to the area. In the case of the embodiment, a fixed wall portion 27 (described later) of the support member 26 is fixed to the left side surface 4 a of the left vertical frame portion 4, and the inflator 10 and the bag body 17 connect the fixed wall portion 27. It is interposed and attached to the left side surface 4a of the left vertical frame part 4. Further, in the case of the embodiment, the inflator 10 is disposed at a position slightly lower than the upper end of the backrest portion 2 (a position substantially corresponding to the height of the chest DB of the driver DP seated on the driver seat DS). Yes. In the case of the embodiment, a later-described tether 23 of the airbag 16 is also configured to be attached to the right side surface 4b of the left vertical frame portion 4 together with the inflator 10 and the bag body 17 using the mounting bolt 12b.

  As described above, the airbag 16 is attached to the left vertical frame portion 4 together with the inflator 10. The airbag body 16 is inflated by allowing inflation gas to flow therein, and the position of the airbag body 17 when the inflation is completed. And a tether 23 for regulating the above.

  As shown in FIGS. 6 and 7, the bag body 17 is disposed so as to cover the left side LW (impact force acting side) of the driver DP seated in the driver seat DS when the inflation is completed. The inflator 10 is disposed inside the rear end side when the inflation is completed, and is attached to the left vertical frame part 4, and the left side LW of the chest DB of the driver DP is covered in front of the attachment part 18 when the inflation is completed. A chest protection unit 20 disposed on the left side of the head DH of the driver DP so as to be continuous with the chest protection unit 20 when the inflation is completed; It has. In the case of the embodiment, as shown in FIGS. 3 to 5, the bag body 17 has substantially the same outer shape, and has an inner wall portion 17 a disposed on the inner side that becomes the driver DP side when the inflation is completed, and an outer side. The outer wall portion 17b is disposed, and the peripheral edges of the inner wall portion 17a and the outer wall portion 17b are combined to form a bag shape. In the case of the embodiment, the bag body 17 is formed from a coated cloth in which a coating agent such as silicon is applied to the surface of a flexible woven cloth made of polyamide yarn or polyester yarn. Mounting holes 19 through which the mounting bolts 12b of the inflator 10 are inserted are formed at two locations in the upper and lower portions of the inner wall portion 17a of the mounting portion 18. Specifically, the mounting hole 19 is disposed on the front side of the position near the rear edge of the mounting portion 18 in a flatly deployed state. When the bag body 17 is inflated, the mounting hole 19 is located behind the inflator 10. A part of the attachment portion 18 is expanded and arranged.

  The tether 23 is disposed on the right side RW (inner wall portion 17a side) which is the separated side surface away from the impact force acting side in the bag body 17 at the completion of the expansion. It is comprised from the flexible woven fabric which consists of a thread | yarn etc. In the case of the embodiment, the tether 23 is configured to be wide enough to cover the right side of the chest protection part 20 over substantially the entire region, and the front end 23a side which is one end side is the front end of the chest protection part 20 in the bag body 17 when the inflation is completed. Two insertion holes 24 that are connected to the 20a side (the front end side along the protruding direction) and through which the mounting bolt 12b of the inflator 10 can be inserted are arranged on the rear end 23b side that is the other end side. . The rear end 23b side of the tether 23 is in a state in which the mounting bolt 12b of the inflator 10 protruding rightward from the right side surface 4b of the left vertical frame portion 4 is inserted into the insertion hole 24 and the nut 13 is fastened together with the inflator 10 and the bag body 17 and fastened to the right side surface 4b (separation side surface) of the left vertical frame portion 4 (see FIG. 2). In other words, in the embodiment, the rear end 23b side of the tether 23 is shifted from the attachment position of the bag body 17 to the left vertical frame portion 4 by the thickness of the left vertical frame portion 4 and the fixed wall portion 27 and to the right RW. The left vertical frame portion 4 and the fixed wall are provided between the attachment portion 18 of the bag body 17 and the portion on the rear end 23b side of the tether 23 when the inflation is completed. The part 27 is interposed (see FIG. 8). Further, the front end 23a side of the tether 23 is configured such that the curved shape of the edge portion is substantially matched with the curved shape of the edge portion on the front end 20a side of the chest protecting portion 20, and in the case of the embodiment, the tether 23 is When the bag body 17 is formed by sewing the inner wall portion 17a and the outer wall portion 17b using a suture thread, the front end 23a side is connected to the front end 20a side of the chest protection portion 20 by sewing together. ing.

  When the bag body 17 is completely inflated, the tether 23 moves to the left side LW (impact force acting side) on the distal end side (the front end 20a side of the chest protection portion 20) along the protruding direction of the bag body 17 when the inflation is completed. It is configured to be able to regulate movement. More specifically, in the case of the embodiment, the tether 23 has a length dimension L1 along the front-rear direction (a separation distance from the suture site on the front end 23a side to the insertion hole 24, see FIG. 5), and the bag body 17 is flattened. The length dimension L2 along the front-rear direction of the part of the chest protection part 20 in the unfolded state (the separation distance from the suture part on the front end 20a side to the attachment hole 19 of the attachment part 18, see FIG. 5) is set. The chest protector 20 in the bag body 17 is directed to the right side away from the impact force acting side, with the front end 20a being restricted from moving to the left side LW in the cross section along the front-rear direction when the inflation is completed. (See FIG. 8). In the airbag apparatus M of the embodiment, specifically, the difference in the length dimension along the front-rear direction between the tether 23 and the portion of the chest protection part 20 in the bag body 17 is L1 / L2 = 5/7. It is set to be about. In the case of the embodiment, the tether 23 is folded together with the bag body 17 and stored. In the case of the embodiment, the bag body 17 is configured such that the inner wall portion 17a and the outer wall portion 17b are overlapped in a flatly developed state, and the tether 23 is further overlapped, and the leading edge side is directed to the inner wall portion 17a side. It is housed in a state where it is folded so as to be wound to reduce the width dimension of the front and back and further folded so as to reduce the width dimension of the top and bottom.

  The support member 26 is composed of a sheet metal material. In the case of the embodiment, the support member 26 has a substantially L-shaped cross section and is fixed to the left side surface 4 a side of the left vertical frame portion 4, and the fixed wall portion 27. And an end surface support portion 28 formed so as to extend from the rear end to the left side LW (impact force acting side). In the case of the embodiment, the end surface support portion 28 is disposed at a position near the rear edge of the left vertical frame portion 4 so as to provide a gap with the inflator 10 positioned in front, and the expansion is completed. The rear end surface 18a of the attachment portion 18 in the bag body 17 at the time is configured to abut on the rear end surface 18a of the attachment portion 18. Specifically, the end surface support portion 28 is configured to protrude to the left side LW from the top of the rear end surface 18a of the attachment portion 18 at the time of completion of expansion so that the rear end surface 18a of the attachment portion 18 can be stably supported. Yes. The support member 26 is disposed corresponding to the portion where the mounting portion 18 of the bag body 17 at the time of completion of expansion is disposed. In the case of the embodiment, the length dimension is determined by the mounting portion 18 at the time of completion of expansion. It is set to a dimension that can be supported over substantially the entire upper and lower regions.

  In the airbag apparatus M according to the embodiment, the inflator 10 is activated in response to an actuation signal from the airbag actuation circuit at the time of a side collision in which a collision object (not shown) collides from the left side LW of the vehicle V, and the bag body 17 is activated. However, the gas expands by inflating with an inflating gas and protrudes forward from the backrest 2 (see the two-dot chain line in FIG. 2). As shown in FIGS. Expansion is completed so as to cover the impact force acting side).

  And in the airbag apparatus M of embodiment, the tether 23 which regulates the position of the bag main body 17 at the time of completion of inflation is provided with one end on the separated side surface (right RW, inner wall portion 17a side) of the bag main body 17 at the time of completion of inflation. The front end 23a side that is the side is connected to the front end 20a side of the chest protection portion 20 in the bag body 17, and the rear end 23b side that is the other end side is the separation side surface of the left vertical frame portion 4 to which the bag body 17 is attached. It is the structure attached to the side (right side surface 4b). Since the bag body 17 itself is configured to be attached to the impact force acting side surface (left side surface 4a) of the left vertical frame portion 4, in the airbag apparatus M of the embodiment, the attachment portion of the bag body 17 that has been inflated is completed. 18 and the rear end 23b side of the tether 23, the left vertical frame portion 4 is interposed (see FIG. 8). That is, in the airbag device M of the embodiment, the attachment position of the tether 23 to the left vertical frame portion 4 is compared with the conventional airbag device by the plate thickness of the left vertical frame portion 4 and the attachment of the bag body 17. Since it can be shifted from the position to the occupant side (driver DP side), when the bag body 17 that has been inflated receives the driver DP, the tether 23 is located on the front end 20a side of the chest protection unit 20 It becomes easy to counter the movement of the bag main body 17 so as to face the left LW, and the tether 23 moves the front end side (front end side) to the left LW along the protruding direction of the bag main body 17 when the inflation is completed. The movement can be accurately regulated.

  Further, in the airbag device M of the embodiment, the support side end surface (the rear end surface 18a of the attachment portion 18) of the bag body 17 when the inflation is completed is formed to extend from the left vertical frame portion 4 to the left side LW. It is configured to be supported by the end surface support portion 28 of the member 26. Therefore, when the airbag 16 is completely inflated, the left side LW is set so that the bag body 17 that has received the driver DP moving toward the left side LW rotates around the attachment portion to the left vertical frame portion 4. The rear end surface 18a can be supported by the end surface support portion 28, and such rotational movement can be restricted, and the bag body 17 is prevented from moving away from the backrest portion 2 when moving to the rear. Therefore, the driver DP can be accurately received.

  Therefore, in the airbag apparatus M of the embodiment, the driver DP as the separation-side occupant can be accurately protected by the inflated airbag 16.

  In the airbag apparatus M of the embodiment, the support member 26 has a substantially L-shaped cross section and is fixed to the left side surface 4a side of the left vertical frame portion 4 and the rear end of the fixed wall portion 27. The bag body 17 and the inflator 10 have a left vertical frame portion with a fixed wall portion 27 interposed therebetween, and an end face support portion 28 formed so as to extend from the left side to the left side LW (impact force acting side). 4 is attached to the left side surface 4a side. That is, in the airbag apparatus M of the embodiment, as shown in FIG. 8, the left vertical frame portion 4 between the attachment portion 18 of the bag body 17 that has been inflated and the rear end 23 b side of the tether 23. In addition to the fixed wall 27, the mounting position of the tether 23 to the left vertical frame 4 is added to the thickness of the left vertical frame 4 in addition to the thickness of the fixed wall 27, From the attachment position of the bag main body 17, it can further shift to the driver | operator DP side. Therefore, when the bag body 17 that has been inflated receives the driver DP, the tether 23 is larger than the movement of the bag body 17 such that the front end 20a side of the chest protection unit 20 faces the left side LW. The tether 23 can stably control the movement of the front end side (front end side) to the left side LW along the protruding direction of the bag body 17 when the inflation is completed. Of course, as the support member, a member that does not include the fixed wall portion and that projects the end surface support portion directly from the vertical frame portion may be used.

  Moreover, you may use the thing as shown in FIG. 9 as support member 26A. The support member 26 </ b> A has a configuration in which the front end of the fixed wall portion 27 protrudes forward from the front end of the left vertical frame portion 4, and protrudes toward the right side RW serving as the separation side on the front end side of the fixed wall portion 27. The protruding part 30 is arranged and configured. The projecting portion 30 is configured so that the distal end surface 30a is disposed on the right side of the right side surface 4b of the left vertical frame portion. When the airbag 16 is completely inflated, the distal end surface 30a causes the tether 23 to The intermediate part is pressed to the right RW (separated side). That is, when the expansion of the bag body 17 is completed, the tether 23 is pressed by the distal end surface 30a of the protruding portion 30 and is bent and stretched so that the intermediate portion 23c faces the right RW. It will be. Therefore, as compared with the bag body 17 of the above-described airbag apparatus M shown in FIG. 8, in FIG. 9, the bag body 17 further directs the front end 20a to the right side further away from the impact force acting side. Will be placed. Therefore, when such a support member 26A is used, when the expansion of the bag body 17 is completed, the tether 23 itself is bent by the protruding portion 30 so that the intermediate portion 23c protrudes toward the driver DP side. Therefore, the tether 23 further smoothly moves the front end side (front end 20a side) to the left side LW along the protruding direction of the bag body 17 when the inflation is completed. Can be suppressed. Such a protruding portion may be provided in the left vertical frame portion instead of the support member.

  In the airbag device M of the embodiment, the bag body 17 of the airbag 16 is configured to inflate so as to cover the left side LW from the chest DB of the driver DP to the head DH when the inflation is completed. As the airbag 16A, the airbag shown in FIGS. 10 and 11 may be used. The airbag 16A includes a bag body 17A that is disposed so as to be continuous with the lower side of the chest protection unit 20 when the inflation is completed, and has a waist protection unit 32 that covers the left side LW of the waist DW of the driver DP. In the bag body 17A shown in FIGS. 10 and 11, the lower end 32a side of the waist protection portion 32 when the inflation is completed overlaps with the console box C arranged between the driver seat DS and the passenger seat PS in the left-right direction. It is configured to make it. When such an airbag 16A is used, the left side LW (impact force acting side) of the driver DP can be covered in a wide range from the head DH to the waist DW, and the waist protection portion when the inflation is completed Since the part of the lower end 32a side of the 32 overlaps with the console box C in the left-right direction, the left LW (impact force acting side) of the lower end 32a side of the waist protection part 32 is supported by the console box C. Thus, the driver DP can be more accurately protected.

  In the embodiment, the airbag apparatus that protects the driver seated in the driver's seat as the separation side seat as a separation side occupant at the time of a side collision from the side (left side) of the passenger seat has been described as an example. Of course, the present invention may be applied to a device that protects an occupant seated in a passenger seat as a separated side seat as a separated side occupant during a side collision from the side (right side) of the driver's seat. Furthermore, the airbag device of the present invention is not limited to a device that protects an occupant seated in the front seat of the vehicle, and may be configured to protect an occupant seated in the back seat of the vehicle. The present invention can also be applied to a vehicle including seats arranged side by side in the front-rear direction.

  2 ... backrest part, 3 ... seat frame, 4 ... left vertical frame part (vertical frame part), 4a ... left side (impact side), 4b ... right side (separation side), 10 ... inflator, 12b ... mounting bolt 16, 16A ... airbag, 17, 17A ... bag body, 18 ... mounting portion, 18a ... rear end surface, 19 ... mounting hole, 20 ... chest protection portion, 20a ... front end, 23 ... tether, 23a ... front end, 23b ... Rear end, 24 ... insertion hole, 26, 26A ... support member, 27, 27A ... fixed wall part, 28 ... end face support part, 30 ... projecting part, DP ... driver (separate side occupant), DS ... driver's seat (separation) Side seat), LW ... left side (impact force acting side), RW ... right side (separated side), M ... airbag device.

Claims (2)

A remote-side occupant mounted on a vehicle configured by arranging a plurality of seats and seated on a remote-side seat far from the impact force application side when an impact force is applied from one side in the side-by-side direction of the seats. Protected configuration,
The folding seat is folded and housed in the backrest portion of the remote seat, and the expansion gas is allowed to flow into the rear seat so as to protrude toward the front of the remote passenger sitting on the remote seat. An inflatable airbag,
An inflator for supplying inflation gas to the airbag;
A support member that is disposed in the backrest portion and supports the airbag when the inflation is completed;
With
The airbag is
In the seat frame disposed in the backrest portion, the impact of the substantially flat plate-like vertical frame portion located on the side surface on the impact force acting side and disposed along a direction substantially orthogonal to the parallel arrangement direction of the seats A bag body that is attached to the force acting side surface and inflates by inflating gas into the inside, and
A tether that regulates the position of the bag body when the inflation is completed;
An airbag device comprising:
The bag body is
When the expansion is completed, the inner side wall portion disposed on the inner side which becomes the separation side occupant side and the outer side wall portion disposed on the outer side are configured, and
The mounting part attached to the vertical frame part together with the inflator by using the mounting bolt for placing the inflator on the inner part side at the time of completion of expansion and mounting the inflator to the vertical frame part, Arranged and configured,
The support member is formed so as to extend from the vertical frame portion to the impact force acting side, and has an end surface support portion that supports an end portion side end surface of the bag body at the time of completion of expansion. ,
A mounting hole for inserting the mounting bolt is formed in the portion of the inner wall portion in the mounting portion,
The tether is
In the bag body at the time of completion of expansion, the bag body is disposed on the inner wall portion side which is a separated side surface away from the impact force acting side, and one end side is a tip along the protruding direction in the bag body at the time of completion of expansion. coupled to the side, the other side by using the mounting bolts of the inflator, the separation side of the vertical frame, with are that mounted configuration,
The other end side is configured by arranging an insertion hole through which the mounting bolt can be inserted,
The separation distance between the connection portion with the bag main body and the insertion hole is set to be smaller than the separation distance between the connection portion and the attachment hole in a state where the bag main body is flatly deployed, and the bag when the inflation is completed An airbag device configured to restrict movement of a tip side toward an impact force acting side along a protruding direction of a main body.   The support member or the vertical frame portion includes a protruding portion that protrudes toward the separation side and presses the intermediate portion of the tether toward the separation side on the distal end side along the protruding direction of the airbag. The airbag device according to claim 1, wherein

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