JP5915561B2 - 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, in an airbag device for protecting a separation side occupant, a support member body that supports an impact force acting side of an airbag at the time of completion of inflation is housed in a backrest portion so that a tip is directed upward. At the time of unfolding and expanding, the base portion attached to the bracket portion has a rotation center as a center of rotation, and is configured to protrude from the backrest portion so that the tip is directed forward (see, for example, Patent Document 1).

JP 2011-178189 A

  However, in this conventional airbag device, the support member main body is configured to protrude while rotating the tip from the upper side to the lower side with the base side attached to the bracket portion as the rotation center, and the rotation of the support member. There is room for improvement in that the support member is placed in an area where a large load acts beyond the trajectory. In order to improve such a point, it is possible to consider simply increasing the length of the support member body. However, since the support member body is housed in the backrest, the support member body is simply made longer. If so, it is difficult to store in the backrest in a compact manner.

  This invention solves the above-mentioned subject, and provides an airbag apparatus provided with the supporting member which can be stored compactly and can be arrange | positioned in the area where a big load acts at the time of operation | movement. Objective.

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, a remote side far from the impact force application side Can protect the occupant seated in the seat,
An airbag that is folded and housed in the backrest portion of the separation-side seat and that is inflated so as to cover the impact force acting side of the separation-side occupant by allowing the inflation gas to flow inside.
A support member that is housed in the backrest portion, protrudes from the airbag that is deployed and inflated as a drive source, and can support the impact force acting side in the airbag when the inflation is completed;
In an airbag device comprising:
The support member is configured to include a support member main body and a bracket portion that attaches the support member main body to the backrest portion side.
The support member main body is pivotally attached to the bracket portion on the base side, and a portion on the tip side from the base portion is connected to a tether extending from the tip side at the time of completion of inflation in the airbag, It is configured to be slidable along a guide provided in the bracket part, and the tip side is projected from the backrest part while sliding the base part side substantially along the vertical direction along the backrest part. It is configured to rotate so as to be able to support the impact force acting side of the airbag when the inflation is completed.

  In the airbag device of the present invention, the support member main body is rotated so that the front end side protrudes from the backrest portion while sliding the base portion side along the guide provided in the bracket portion when the airbag is completely inflated. In this state, the impact force acting side of the airbag is supported. That is, in the airbag device of the present invention, the support member main body is arranged at a position separated from the position of the original part side when stored in the backrest part when the movement is completed by sliding the entire support member body. Even if the length dimension is not lengthened, the support member main body can be arranged in an area where a large load acts, exceeding the rotation locus, and an area where a large load acts can be supported. Therefore, the impact force acting side of the remote occupant can be accurately supported, and the remote occupant can be accurately protected via the airbag.

  Therefore, in the airbag device of the present invention, the support member can be stored in a compact manner, and can be disposed in an area where a large load acts during operation.

  Further, in the airbag device of the present invention, the support member is provided with an auxiliary link piece that is arranged so as to connect the vicinity of the tip of the support member main body that has been projected and the vicinity of the base end of the guide. Then, when the protrusion is completed, the impact force acting side of the airbag when the inflation is completed can be supported in a substantially triangular region surrounded by the support member main body and the auxiliary link piece. Therefore, compared to the case where the auxiliary link piece is not provided, the impact force acting side of the airbag when the inflation is completed can be supported in a wide area, and the occupant on the separation side can be more accurately supported via the airbag. It is preferable that it can be protected.

  Furthermore, in the airbag apparatus having the above-described configuration, if the guide is configured to be provided with a stopper mechanism that regulates the return after the sliding of the support member main body corresponding to the base portion side of the support member main body, the support member It is preferable that the main body can be prevented from moving back to the state before the operation after the protrusion is completed.

  Furthermore, in the airbag device having the above-described configuration, the guide is configured to slide upward on the base side of the support member body, and the support member body is substantially along the horizontal direction after the slide movement is completed. If it is arranged to support the impact force acting side in the vicinity of the shoulder of the remote occupant, the vicinity of the shoulder of the remote occupant on which the large load acts is approximately horizontal in the horizontal direction with an airbag interposed. The support member main body arranged along the front and rear can be restrained accurately in a wide area in the front and rear, and the movement of the remote occupant toward the impact force acting side can be accurately suppressed, which is preferable. .

1 is a side view of a seat on which an airbag device according to an embodiment of the present invention is mounted. In the seat of FIG. 1, it is the elements on larger scale which expanded the site | part of the backrest part. FIG. 3 is a partial enlarged cross-sectional view taken along a line III-III in FIG. 2. It is a side view of the state where the air bag used for the air bag device of an embodiment was developed flat. FIG. 5 is a cross-sectional view of a state where the airbag of FIG. 4 is inflated alone, corresponding to the VV portion of FIG. 4. It is a side view of the support member used for the airbag apparatus of embodiment, and shows the state in a stand-by position, and the state in a support position. FIG. 7 is a partially enlarged side view showing the vicinity of a locking hole portion arranged on the upper end side of the guide groove in the bracket portion of the support member of FIG. 6. 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. It is a side view of the support member which is other forms of the present invention, and shows the state in a stand-by position, and the state in a support position. FIG. 11 is a side view showing a state in which the airbag is completely inflated in the airbag device using the support member of FIG. 10. It is a side view of the seat which mounts the airbag apparatus which is further another form of this invention.

  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. 9, in a vehicle V including a driver seat DS and a passenger seat PS provided along the left-right direction, a case where a side collision occurs from the left LW (passenger seat PS side) is an example. To 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 rearwardly from the rear end side of the seat portion 1, and an upper portion from the upper end of the backrest portion 2. And a headrest 7 projecting from the head.

  As shown in FIGS. 2 and 3, the backrest 2 is configured to include a seat frame 3 made of a sheet metal material and a cushion 6 arranged 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. As shown in FIG. 3, the left vertical frame portion 4 has a substantially flat plate shape and is disposed substantially along the direction substantially perpendicular to the parallel arrangement direction of the driver seat DS and the passenger seat PS, that is, in the front-rear direction. The backrest 2 is disposed over substantially the entire upper and lower portions. And in the case of embodiment, as shown in FIG. 3, the airbag apparatus M is accommodated in the clearance gap formed between the left vertical frame part 4 and the cushion 6 of the seat frame 3 in the backrest part 2. As shown in FIG. . An outer skin (not shown) is disposed on the outer surface side of the cushion 6 of the backrest portion 2, and this outer skin is accompanied by a partial breakage of the cushion 6 when the airbag 16 is deployed and inflated. Thus, the airbag 16 and the support member main body are protruded forward by partially breaking.

  The airbag device M is disposed on the side surface side of the left side LW (the left side surface side of the left vertical frame portion 4), which is the impact force acting side of the driver seat DS, and as shown in FIGS. An airbag 16 that is folded and housed in the DS backrest 2, an inflator 10 that supplies inflation gas to the airbag 16, and a vehicle front side that is disposed in the backrest 2 and is deployed and inflated by the airbag 16. And a support member 24 that protrudes toward the center.

  As shown in FIGS. 1 to 3, the inflator 10 includes a substantially columnar main body 11 and a mounting bracket 12 arranged 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 part 4. In the case of the embodiment, the main body 11 is provided on the columnar large diameter part 11 a and the lower end side of the large diameter part 11 a and gas. A small-diameter portion 11b having a discharge port 11c, and a lead wire 11d electrically connected to an airbag operation circuit (not shown) is connected to the upper end side of the large-diameter portion 11a. The mounting bracket 12 includes a substantially cylindrical holding portion 12a that can hold the main body 11, and a mounting bolt 12b that protrudes rightward from the holding portion 12a. 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 completes the expansion in the airbag 16 by causing a mounting bolt 12b to protrude from a mounting hole 18 described later formed in the airbag 16 and a lead wire 11d to protrude outside. When the mounting bolt 12b protruding from the airbag 16 is protruded from the left vertical frame portion 4 and is fastened with a nut 13 while being accommodated in the upper rear end region, the left vertical It is the structure attached to the left side surface of the frame part 4 (refer FIG. 3). In the case of the embodiment, the mounting bolt 12b is configured to protrude from the left vertical frame portion 4 via the right side wall 30 of the bracket portion 29 for attaching the support member 24 to the left vertical frame portion 4, and the inflator 10 is an airbag. 16 and the support member 24 are attached to the left vertical frame portion 4.

  As described above, the airbag 16 is attached to the left vertical frame portion 4 together with the inflator 10 via the right side wall 30 of the bracket portion 29 for attaching the support member 24 to the left vertical frame portion 4. , A bag body 17 that is inflated by allowing an inflation gas to flow inside, and a tether 21 that is connected to the support member body 25 in the support member 24.

  As shown in FIGS. 8 and 9, the bag body 17 is arranged so as to cover the left side LW (impact force acting side) of the driver DP (separate side occupant) seated in the driver seat DS when the inflation is completed. The expansion completion shape is a substantially elliptical plate shape that protrudes obliquely forward and upward from the backrest portion 2, and the lower end side when the expansion is completed is attached to the left vertical frame portion 4. As shown in FIGS. 4 and 5, the bag body 17 has substantially the same outer shape, and the right side wall portion 17a arranged on the right side which becomes the driver DP side when the inflation is completed, and the left side wall arranged on the left side Part 17b, and the peripheral edges of the right side wall part 17a and the left side wall part 17b are joined (sewn) 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. Moreover, the attachment hole 18 for allowing the attachment bolt 12b of the inflator 10 to be inserted is formed in two places near the lower end of the right side wall portion 17a. Further, inside the bag body 17, a band-shaped thickness regulating member 19 that regulates the thickness at the completion of expansion is coupled (sewn) to the right side wall portion 17 a and the left side wall portion 17 b at both edges. It is arranged to let you. The thickness regulating member 19 is formed of a woven fabric having flexibility like the bag main body 17. In the case of the embodiment, the outer shape of the bag main body 17 is viewed from the side of the bag main body 17 when the expansion is completed. As a substantially oval cylindrical shape that is substantially similar to the shape, it is arranged at a position slightly below the center of the upper and lower sides (see FIG. 4), and as shown in FIG. 17a and the left side wall portion 17b are sewn (coupled).

  As shown in FIG. 4, the tether 21 is disposed on the outer surface side of the left wall portion 17 b that is the impact force acting side (left side LW) in the bag body 17 at the time of completion of the inflation. The bag body 17 is connected to the front edge 17c side which is the front end side when the inflation is completed. Specifically, the base portion 21a of the tether 21 is connected to a position near the upper and lower centers on the front edge 17c side of the bag body 17. The tip 21b side of the tether 21 is connected to the tip 25b side of the support member body 25 as described later. In the case of the embodiment, the tether 21 is formed from a flexible belt-shaped woven fabric, and the base portion 21a side of the tether 21 is a suture thread between the peripheral edges of the right side wall portion 17a and the left side wall portion 17b. When the bag body 17 is manufactured by sewing, the two are sewn together and connected to the bag body 17. When the bag body 17 is expanded and inflated, the tether 21 moves the support member body 25 disposed at the standby position P1 to the tip 25b side as the bag body 17 expands so as to protrude forward from the backrest 2. Is disposed so as to be forwardly rotated so as to be directed forward and to be slid upward along the guide groove 32 to be disposed at the support position P2. In the case of the embodiment, the tether 21 is the base portion 21a connected to the bag body 17 when viewed from the side after the bag body 17 is completely expanded and after the support member body 25 is disposed at the support position P2. In order to position the side slightly above the tip 21b connected to the support member main body 25, it is inclined slightly rearward and is arranged so as to be substantially horizontal (see FIG. 8).

  As shown in FIGS. 1 to 3, the support member 24 is housed in the backrest portion 2 and protrudes with the airbag 16 that is deployed and inflated as a drive source, and the support member main body 25 is used as the backrest portion 2. It is set as the structure provided with the bracket part 29 to attach (refer FIG. 6).

  The bracket portion 29 has a substantially U-shaped cross-section with an opening at the front, and is a long shape that is disposed substantially along the left vertical frame portion 4 (backrest portion 2). The inflator 10 has an insertion hole 30a through which the mounting bolt 12b can be inserted, and the airbag 16 folded inward and the inflator 10 are inserted so that the mounting bolt 12b of the inflator 10 protrudes from the right side wall 30. And a nut 13, and is attached to the left vertical frame portion 4.

  A guide groove 32 is formed on the left side wall 31 of the bracket portion 29 as a guide that can slide and move on the base portion 25a side of the support member main body 25. As shown in FIG. 6, the guide groove 32 is formed in a straight line substantially along the vertical direction along the longitudinal direction of the left side wall 31, that is, substantially along the left vertical frame portion 4 and the backrest portion 2. Therefore, the guide pin 26 formed so as to protrude from the support member main body 25 can be inserted. In the case of the embodiment, the guide groove 32 is disposed so as to be inclined with respect to the front edge of the left side wall 31 and the left vertical frame portion 4 so that the upper end is directed forward (so that the inclination angle with respect to the vertical direction is reduced). Has been. On the upper end 32a side of the guide groove 32, a stopper mechanism that is configured to correspond to the guide pin 26 disposed on the base portion 25a side of the support member body 25 and restricts the return of the support member body 25 after the slide is completed. Is formed (see FIGS. 6 and 7). The locking hole 33 is formed so as to communicate with the upper end 32 a of the guide groove 32 and to protrude forward from the upper end 32 a of the guide groove 32. The locking hole 33 is configured to allow the guide pin 26 to be inserted and to lock the guide pin 26 at the periphery. As shown in FIG. 7, the guide pin 26 is prevented from returning. The front lower edge 33a side, which is an intersecting portion with the guide groove 32, is configured to protrude slightly rearward and upward.

  The support member body 25 is configured to be able to support the impact force acting side (left side LW) of the bag body 17 by using the airbag 16 that is deployed and inflated as a drive source and projecting forward when the airbag 16 is deployed and inflated. Thus, it is formed from a sheet metal material as a long, substantially flat plate shape. The support member main body 25 is attached to the left side wall 31 of the bracket portion 29 on the base portion 25a side. Specifically, the support member main body 25 has a round bar-like guide pin 26 formed so as to protrude rightward on the base portion 25a side, and is inserted into the guide groove 32 so that the guide member 32 is prevented from coming off. Thus, it is rotatably attached to the outer surface side of the left side wall 31. In the standby position P1, the support member main body 25 substantially aligns the longitudinal direction with the guide groove 32 while bringing the guide pin 26 into contact with the peripheral edge of the lower end 32b of the guide groove 32 as shown in FIG. 6A. Thus, it is stored in the backrest 2. When the airbag 16 is inflated and inflated, the support member main body 25 is lifted up to the base portion 25a side by rotating the tip 25b so that the front end 25b is directed forward and sliding the guide pin 26 with respect to the guide groove 32. It is the structure which protrudes ahead while moving and is arrange | positioned in the support position P2 which supports the impact-force action side (left side LW) of the airbag 16 (refer B of FIG. 6). In the embodiment, the support member main body 25 disposed at the support position P <b> 2 is disposed so as to be linearly connected to the tether 21. Further, as shown in FIG. 6, the support member main body 25 has the tip 21 b side of the tether 21 at a position closer to the distal end side than the base portion 25 a, and in the case of the embodiment, near the distal end 25 b. A connection hole 27 that is inserted and connected is provided.

  The support member main body 25 is configured such that when the airbag 16 is deployed and inflated, the tip is pulled forward and upward from the standby position P <b> 1 by the front and upper movement of the tether 21 accompanying the forward protrusion of the bag main body 17. Thus, the guide pin 26 protrudes forward from the backrest 2 while rotating so that the tip 25b is directed forward with the rotation center of the guide pin 26 as the center. In the embodiment, the support member main body 25 moves upward while sliding the guide pin 26 with respect to the guide groove 32 simultaneously with the forward rotation. If the guide pin 26 reaches the upper end 32a of the guide groove 32, is inserted into the locking hole 33 formed in the upper end 32a of the guide groove 32, and is locked to the peripheral edge of the locking hole 33, the guide pin 26 is supported. The movement of the member main body 25 in the front upper direction is completed, and the support member main body 25 is arranged at the support position P2 (see B in FIG. 6). And in the state arrange | positioned in this support position P2, as shown in FIG.8, 9, the support member main body 25 supports the impact force action side (left side LW) of the bag main body 17 which completed the expansion | swelling. Become. In the case of the embodiment, the support member main body 25 is substantially horizontal in the horizontal direction so as to be linearly connected to the tether 21 as shown in FIG. 8 when the front upward projection is completed (when arranged at the support position P2). Are arranged along. In detail, the support member main body 25 is disposed slightly inclined with respect to the front-rear direction along the tether 21 so that the tip 25b is slightly directed upward along the horizontal direction when the protrusion is completed. In addition, the front end 25b is positioned in the vicinity of the shoulder portion SP of the driver DP so that the impact force acting side (left side LW) of the shoulder portion SP can be supported (see FIG. 8).

  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, it expands by inflowing an inflating gas into the interior and protrudes forward from the backrest portion 2, and is stored in the backrest portion 2 at the standby position P <b> 1 as the bag body 17 protrudes forward. The supporting member main body 25 is moved upward with respect to the bracket portion 29 while rotating so that the front end 25b faces forward, and protrudes toward the front upper side. Then, as shown in FIG. 9, the airbag 16 completes the inflation so as to cover the left side LW (impact force acting side) of the driver DP, and the support member main body 25, as shown in FIG. The airbag 16 that has been inflated is disposed at the support position P2 that is the left side LW (impact force acting side) of the airbag 16.

  In the airbag apparatus M of the embodiment, the support member main body 25 has a distal end that slides along the guide groove 32 (guide) provided in the bracket portion 29 on the base portion 25a side when the airbag 16 is completely inflated. It is the structure which supports the impact-force action side (left side LW) of the airbag 16 in the state rotated so that the 25b side might protrude from a backrest part. That is, in the airbag apparatus M of the embodiment, the support member main body 25 is slid on the whole so that the movement of the support member body 25 on the side of the base portion 25a at the time of completion of the movement, Since it is arranged at a position spaced upward from the position (the lower end 32b side of the guide groove 32), a large load acts on the support member body 25 beyond the rotation locus without increasing the length dimension. It can arrange | position to an area (in the case of embodiment, the side of the shoulder part SP of driver | operator DP as a separation side passenger | crew), and can support the area where a big load acts. Therefore, the impact force acting side (left side LW) of the driver DP as the separation side occupant can be accurately supported, and the driver DP as the separation side occupant is accurately protected via the airbag 16. be able to.

  When the driver DP that receives the airbag 16 moving toward the impact force acting side (left side LW) is received, the support member main body 25 supporting the airbag 16 moves so that the tip 25b faces the left side. However, the edge portion 25ab on the base portion 25a side of the support member body 25 has a region extending beyond the guide pin 26 (see FIG. 6B), and this region is in contact with the left side wall 31. The support member main body 25 can support the driver DP accurately because the support member main body 25 can suppress the further leftward movement.

  Therefore, in the airbag apparatus M of the embodiment, the support member 24 can be stored in a compact manner, and can be arranged in an area where a large load acts during operation.

  In the airbag apparatus M of the embodiment, the stopper that restricts the return of the support member main body 25 after the slide is completed in correspondence with the guide groove 32 and the guide pin 26 disposed in the base portion 25a of the support member main body 25. Since the locking hole portion 33 as a mechanism is disposed, the support member main body 25 can be prevented from moving so as to return to the state before the operation after the protrusion is completed. If such a point is not taken into consideration, the stopper mechanism may not be provided on the guide.

  Furthermore, in the airbag apparatus M of the embodiment, the support member main body 25 is slid upward on the base portion 25a side at the time of protrusion, and after the slide movement is completed (when arranged at the support position P2), It is the structure which is arrange | positioned along the direction substantially and supports the impact-force action side (left side LW) of the driver | operator DP near shoulder part SP. Therefore, the support member main body 25 that is disposed substantially along the horizontal direction with the airbag 16 interposed in the vicinity of the shoulder portion SP of the driver DP (separate side occupant) on which a large load acts is provided in a wide area. Thus, it is possible to restrain the driver DP accurately and to prevent the driver DP from moving toward the impact force acting side (left side LW).

  Moreover, you may use the thing of the structure shown in FIG. The support member 40 is configured to include a support member main body 25A, a bracket portion 29A, and an auxiliary link piece 41 arranged so as to connect the support member main body 25A and the bracket portion 29A when the protrusion is completed. The auxiliary link piece 41 is pivotally connected to the left side wall 31A of the bracket portion 29A on the base portion 41a side using the rotation pin 42, and the tip 41b side is connected to the left side wall 31A using the rotation pin 43. The support member body 25A is rotatably connected. The support member main body 25A and the bracket portion 29A have substantially the same configuration as the above-described support member main body 25 and the bracket portion 29 except that the auxiliary link piece 41 is connected, and the same members are denoted by the same reference numerals. A detailed description is omitted by adding “A” at the end.

  Similar to the support member main body 25A, the auxiliary link piece 41 is formed from a sheet metal material as a long and substantially flat plate shape, and the guide portion 32A is formed on the left side wall 31A of the bracket portion 29A with the base portion 41a side. Are connected to the front side of the lower end 32b side (original side). Further, the tip 41b side of the auxiliary link piece 41 is connected to a position adjacent to the base portion side of the connecting hole 27A that connects the tether 21 extending from the bag body 17 in the vicinity of the tip 25b of the support member main body 25A. Yes. Then, in the standby position P3, the support member 40 having such a configuration is configured so that the guide pin 26A is brought into contact with the peripheral edge of the lower end 32b of the guide groove 32A as shown in FIG. And the auxiliary link piece 41 are accommodated in the backrest portion 2 of the driver seat DS so that the longitudinal direction thereof is substantially along the guide groove 32A.

  In the support member 40, when the airbag 16 is deployed and inflated, the support member main body 25A moves the tip 25b from the standby position P3 by moving the tether 21 forward and upward as the bag main body 17 projects forward. It will be pulled forward and upward, and will protrude forward from the backrest 2 while rotating with the guide pin 26A as the center of rotation and the tip 25b facing forward. In the embodiment, the support member main body 25A moves upward while sliding the guide pin 26A with respect to the guide groove 32A simultaneously with the forward rotation. As the support member main body 25A moves, the auxiliary link piece 41 also protrudes forward from the backrest portion 2, and the guide pin 26A reaches the upper end 32a of the guide groove 32A and enters the locking hole portion 33A. When inserted and locked to the periphery of the locking hole 33A, the support member main body 25A and the auxiliary link piece 41 are moved forward and upward, and the support member main body 25A and the auxiliary link piece 41 are supported. It will be arranged at position P4. Also in the support member 40 having such a configuration, the support member main body 25A substantially extends in the horizontal direction so as to be linearly connected from the tether 21 when the front upward projection is completed (when arranged at the support position P4). (See FIG. 11), the auxiliary link piece 41 is lifted forward so as to linearly connect the tip 25b side of the support member body 25A and the lower end 32b (original part) side of the guide groove 32A. It is arranged at an angle.

  If the support member 40 having the above-described configuration is used, the support member main body 25A and the auxiliary link piece 41 intersect each other when viewed from the left and right sides when the protrusion is completed (when the support member 40 is disposed at the support position P4). Since it is arranged in a substantially triangular shape, the impact force acting side (left side LW) of the airbag 16 when the inflation is completed is supported in a substantially triangular region surrounded by the support member main body 25A and the auxiliary link piece 41. Can do. Therefore, compared with the case where the auxiliary link piece is not provided, the impact force acting side (left side LW) of the airbag 16 at the completion of the inflation can be supported in a wide area, and the driver DP as the separation side occupant can be supported. The air bag 16 can be more accurately protected.

  In the support member 40 described above, the tip 21b side of the tether 21 extending from the airbag 16 is connected to the tip 25b side of the support member main body 25A itself, but the tip side of the tether is the tip side of the support member main body. In this case, the same action can be obtained even if the auxiliary link piece is connected to the tip of the auxiliary link piece, so that the auxiliary link piece may be connected to the tip side of the auxiliary link piece. Further, the auxiliary link piece 41 and the support member main body 25A are connected to each other in the vicinity of the mutual tips 41b and 25b (positions adjacent to the connection hole 27A for connecting the tether 21). You may comprise so that the extension part 24t (refer the dashed-two dotted line of FIG. 11) which extends further from a mutual connection site | part may be arrange | positioned in a member main body, respectively. With such a configuration, the support performance is improved, but the length of the support member main body and the auxiliary link piece is increased, and the storage performance in the backrest portion is not good, so the storage performance in the backrest portion is improved. It is preferable to provide a configuration in which the extending portion is provided within a range that does not decrease.

  In the embodiment, the support members 24 and 40 are configured to slide the support member main bodies 25 and 25A upward. However, the sliding direction of the support member main body is not limited to the upper side. For example, like the airbag apparatus shown in FIG. 12, as the airbag 45, the chest protection portion 46 that protrudes from the backrest portion 2 toward the front upper side so as to protect the chest BP of the driver DP as the separated side occupant. In addition, you may use the structure which has the waist part protection part 47 which protrudes toward the front lower part from the backrest part 2 so that driver | operator DP's waist part WP may be protected. When such an airbag 45 is used, two support member main bodies 25U and 25D are arranged vertically, and the upper support member main body 25U is slid upward so that the left side of the chest protection part 46 can be supported. The lower support member main body 25D may be configured to slide downward so that the left side of the waist protection portion 47 can be supported.

  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, 10 ... inflator, 16, 45 ... airbag, 17 ... bag body, 17c ... front edge (tip), 21 ... tether, 24, 40 ... support member, 25, 25A, 25U , 25D ... support member main body, 25a ... original part, 25b ... tip, 29, 29A ... bracket part, 32,32A ... guide groove (guide), 33,33A ... locking hole part (stopper mechanism), 41 ... auxiliary link 41a ... original part, 41b ... tip, DP ... driver (separate side occupant), SP ... shoulder, DS ... driver's seat (separate side seat), LW ... left side (impact force acting side), RW ... right side ( Remote side), M ... Airbag device.

Claims (4)

Mounted on a vehicle configured with multiple seats arranged side by side, it is possible to protect passengers seated on remote seats far from the impact force application side when an impact force is applied from one side of the seat in the parallel direction Because
An airbag that is folded and housed in a backrest portion of the separate side seat, and inflated and inflated so as to cover the impact force acting side of the separate side occupant by flowing an inflating gas into the interior;
A support member that is housed in the backrest portion, protrudes using the airbag that is deployed and inflated as a drive source, and that can support an impact force acting side in the airbag when the inflation is completed;
In an airbag device comprising:
The support member includes a support member main body, and a bracket portion that attaches the support member main body to the backrest portion side.
The support member main body is pivotally attached to the base portion with respect to the bracket portion, and a portion on the distal end side from the base portion is connected to a tether extending from the distal end side when the airbag is completely inflated. And is configured to be slidable along a guide provided on the bracket portion, and the front side is slid along the backrest portion substantially along the backrest portion, while the distal end side is the backrest portion. The airbag device is configured to be pivotable so as to protrude from the airbag and to support the impact force acting side of the airbag when the inflation is completed.   2. The support member includes an auxiliary link piece arranged to connect the vicinity of the distal end of the support member main body that has been projected and the vicinity of the base end of the guide. The airbag apparatus as described.   The said guide is provided with the stopper mechanism which controls the return | restoration after the completion of a slide of the said support member main body corresponding to the base part side of the said support member main body, The Claim 1 or 2 characterized by the above-mentioned. Airbag device. The guide is configured to slide and move the base side of the support member body upward.
The support member main body is arranged substantially along the horizontal direction after the slide movement is completed, and is configured to be able to support the impact force acting side in the vicinity of the shoulder portion of the remote occupant. The airbag device according to any one of 1 to 3.

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