JP6051908B2 - 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 separated occupant, the airbag device has an airbag housed in a backrest portion of the separated seat, and the airbag is inflated so as to cover the impact force acting side of the separated occupant. There was a configuration to make it. Further, this conventional airbag apparatus is configured to support the impact force acting side of the airbag when the inflation is completed by the support member, and to cover the impact force acting side of the support member at the time of the protrusion with the cover member. (For example, see Patent Document 1).

JP 2009-280023 A

  However, in the conventional airbag device, the support member is housed in the backrest portion of the near side seat which is the impact force acting side, not in the separated side seat, and using a drive source different from the airbag, Since it is configured to protrude so as to support the impact force acting side, if it interferes with the near side occupant, it is not arranged in a range that can smoothly support the separated side of the inflating airbag, and the separated side occupant is accurately In some cases, it could not be protected. Further, in the conventional airbag device, the cover member that covers the impact force acting side of the support member is also composed of an airbag that is folded and stored in the backrest portion of the close side seat. Separate drive sources are required for the protective airbag, the support member for supporting the airbag, and the cover member that covers the impact force acting side of the support member, and the configuration is complicated.

  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 remote occupant with a simple configuration.

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. An airbag device configured to protect a remote occupant seated in a 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;
A flexible cover member disposed on the airbag, capable of covering the impact force acting side of the support member from the start of movement to the completion of movement;
It is characterized by having.

  In the airbag apparatus according to the present invention, the support member that supports the impact force acting side of the airbag is housed in the backrest portion of the separation-side seat, and the airbag that is deployed and inflated is used as a drive source along with the deployment and inflation of the airbag. The cover member that covers the impact force acting side of the support member is also configured to protrude due to the expansion and inflation of the airbag. Therefore, when the airbag is deployed and inflated, the support member protrudes at the same time, and the cover member is also arranged so as to cover the impact force acting side of the support member. It can be. Furthermore, in the airbag device of the present invention, the cover member is configured to cover the impact force acting side of the support member from the start of movement to the completion of movement. Even if a close side occupant sits on the close side seat and the close side occupant is approaching, the interference with the close side occupant can be suppressed, and the support member can be smoothly projected to a predetermined position to complete the expansion. It is possible to quickly support the impact force acting side of the airbag.

  Therefore, in the airbag device of the present invention, the remote occupant can be accurately protected with a simple configuration.

  In the airbag device of the present invention, it is preferable that the cover member is composed of a sheet body connected to the outer peripheral wall of the airbag because the configuration can be further simplified.

  Further, in the airbag device of the present invention, if the cover member is configured from a part of the airbag that is inflated by inflating the inflation gas, the impact force acting side of the support member is inflated to the inside. When the near side occupant is seated in the close side seat, the support member interferes with the close side occupant through the inflated part. Can be further suppressed, which is preferable.

  Furthermore, in the airbag apparatus configured as described above, if the support member is made of metal and a protective layer made of synthetic resin or rubber is disposed on the outer surface side, the support member has sufficient strength. The impact force acting side of the airbag that has received the occupant on the separation side can be accurately supported, and the protective layer disposed on the outer surface side when in contact with the airbag or the cover member. It is preferable because damage to the airbag and the cover member can be suppressed.

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 of a III-III portion in FIG. 2. 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. 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. FIG. 5 is a plan view of the airbag of FIG. 4 in a state in which a bag body, a tether, and a cover member are arranged. It is a schematic perspective view of the support member used for the airbag apparatus of embodiment. 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 a schematic cross-sectional view along the front-back direction 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 top view of the state which developed the air bag which is other forms of the present invention flat. It is sectional drawing of the state which expanded the airbag of FIG. 11 alone, and respond | corresponds to the XII-XII site | part of FIG. FIG. 12 is a side view showing a state in which the airbag is completely inflated in the airbag device using the airbag of FIG. 11. FIG. 12 is a schematic cross-sectional view along the front-rear direction showing a state in which the airbag is completely inflated in the airbag device using the airbag of FIG. 11. FIG. 12 is a schematic view of the airbag device using the airbag of FIG. 11 as seen from the front side of the vehicle, showing a state in which the airbag is completely inflated.

  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. 10, 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 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 is broken and the airbag 16 and the supporting member 26 will protrude ahead.

  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 cover member 23 which is disposed on the left side surface of the airbag 16 when the inflation is completed and covers the support member 26.

  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 is substantially along the left vertical frame portion 4. In the case of the embodiment, the main body 11 is provided on the upper end side of the cylindrical large diameter portion 11 a and the large diameter portion 11 a. A small-diameter portion 11b having a discharge port 11c, and a lead wire 11d that is 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 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 is housed in the airbag 16 so that the mounting bolt 12b protrudes from a mounting hole 18 described later formed in the airbag 16 and the lead wire 11d protrudes to the outside. In this state, the mounting bolt 12b protruding from the airbag 16 is protruded from the left vertical frame portion 4 and fastened with a nut 13 to be attached to the left side surface of the left vertical frame portion 4 together with the airbag 16. Yes (see 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 32 of the mounting bracket 31 for mounting the support member 26 to the left vertical frame portion 4, and the inflator 10 is an airbag. 16 and the support member 26 are attached to the left vertical frame portion 4.

  As described above, the airbag 16 is attached to the left vertical frame portion 4 via the right wall 32 of the mounting bracket 31 that attaches the support member 26 to the left vertical frame portion 4 together with the inflator 10. The bag body 17 is inflated by inflating the inflation gas, and the tether 21 is connected to the support member 26.

  As shown in FIG. 8, the bag body 17 is disposed 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 completed shape is a substantially elliptical plate shape that projects obliquely upward and upward from the backrest portion 2, and the lower end side at the time of completion of expansion is attached to the left vertical frame portion 4. As shown in FIGS. 4 to 6, the bag body 17 has substantially the same outer shape, and the right side wall portion 17 a that is disposed on the right side that becomes the driver DP side when the inflation is completed, and the left side wall that is disposed 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 together to form a bag. 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 the expansion is sewn to the right side wall part 17 a and the left side wall part 17 b, respectively. Arranged. 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 (see FIGS. 4 and 6), as shown in FIG. 5, both edge sides along the axial direction are sewn to the right side wall portion 17a and the left side wall portion 17b. Configured.

  As shown in FIG. 5, the tether 21 is disposed on the outer surface side of the left side wall portion 17b which is the impact force acting side (left side LW) in the bag body 17 at the time of completion of the inflation. The front edge when the expansion is completed is connected to a position slightly below the center of the top and bottom, and the front end 21b side is connected to the front end 26b side of the support member 26 as described later. In the case of the embodiment, the tether 21 is composed of a belt-like woven fabric having flexibility, and the base portion 21a side of the tether 21 is a suture thread between the peripheral edges of the right wall portion 17a and the left 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 26 disposed at the standby position P1 on the front end 26b side as the bag body 17 expands so as to protrude forward from the backrest 2. It is arranged to rotate toward the front side so as to protrude while facing forward and to be arranged at the support position P2. In the case of the embodiment, the tether 21 is located at the time when the expansion of the bag body 17 is completed, and after the protrusion of the support member 26 is completed, the base portion 21a side connected to the bag body 17 is positioned forward and downward when viewed from the side. The tip 21b connected to the support member 26 is inclined and disposed so as to be positioned rearward and upward (see FIG. 8).

  In the case of the embodiment, as shown in FIGS. 4 to 6, the cover member 23 is a separate body from the bag body 17, and the left wall portion 17 b that is the impact force acting side (left side) in the bag body 17 when the inflation is completed. It is comprised from the sheet | seat body connected with (outer peripheral wall). In the case of the embodiment, the sheet member constituting the cover member 23 is formed of a flexible woven fabric. In the case of the embodiment, the flexible woven fabric made of polyamide yarn, polyester yarn, or the like. It is formed from a non-coated cloth in which no coating agent is applied. The cover member 23 is configured to be able to cover the impact force acting side (left side LW) of the support member 26 from the start of movement to the completion of movement (arrangement at the support position P2). Specifically, the cover member 23 can cover the outer shape of the left side of the region of the lower half of the bag body 17 when the inflation is completed, and the upper edge 23a is a support member when the protrusion is completed (support position P2). It is comprised so that it may be located above the front-end | tip 26b of 26 (refer FIG. 8). Further, the cover member 23 is configured so that the support member 26 that moves forward (projects) when the bag body 17 is deployed and inflated can be smoothly inserted into a gap portion between the bag body 17 and the bag body 17. It is connected to the side. Specifically, the cover member 23 is partially connected to the bag body 17 side on the upper edge 23a side and the lower edge 23b side, respectively. More specifically, the cover member 23 has an outer shape that is substantially the same shape as the region of the lower half of the bag body 17 when inflation is completed, and the upper edge 23 a Is inclined with respect to the front-rear direction so as to face upward. The upper edge 23a of the cover member 23 is configured to be positioned above the movement locus of the tip 26b of the support member 26 when the bag body 17 is completely inflated. In the site | part used as the both front and back sides of the thickness control member 19, it is sewn on the left side wall part 17b of the bag main body 17 (refer FIGS. 4-6). Also, the cover member 23 is arranged in the backrest portion 2 so as to cover the entire left side LW (impact force acting side) including the mounting bracket 31 attached to the left vertical frame portion 4 in the support member 26. The lower edge 23 b is sewn to the left side wall portion 17 b of the bag body 17 at the front and rear side portions that are out of the arrangement area of the mounting bracket 31. In the embodiment, the cover member 23 is partially folded on the upper edge side together with the bag body 17 so as to cover the left side of the support bracket 26 so as to cover the left side of the mounting bracket 31 at the lower edge side portion. The backrest 2 is accommodated in the backrest 2 while bypassing the support member 26.

  The support member 26 is housed in the backrest portion 2 and uses the airbag 16 that is deployed and inflated as a drive source, and projects forward when the airbag 16 is deployed and inflated, so that the impact force acting side (left side LW) of the bag body 17 is supported. It is configured to be supportable. Specifically, the support member 26 is formed of a sheet metal material, and a synthetic resin or rubber protective layer 27 is disposed on the entire outer surface side (see FIG. 7). Specific examples of the material forming the protective layer 27 include polypropylene (PP), polyurethane-based thermoplastic elastomer (TPU), polyolefin-based thermoplastic elastomer (TPO), and ethylene / propylene rubber (EPDM). it can. The protective layer 27 has elasticity and has a smooth outer surface so as not to damage the left side wall portion 17b of the bag body 17 and the cover member 32. In the case of the embodiment, as shown in FIGS. 2, 3, and 7, the support member 26 is a long, substantially flat plate shape, and uses a mounting bracket 31 having a substantially U-shaped cross-section with the front opening, and the backrest. It is attached to the left vertical frame part 4 of the seat frame 3 in the part 2. The mounting bracket 31 has an insertion hole 32a through which the mounting bolt 12b of the inflator 10 can be inserted in the right side wall 32. The folded airbag 16 and the inflator 10 are inserted into the right side wall 32. It is the structure attached to the left vertical frame part 4 using the attachment volt | bolt 12b and the nut 13 of the inflator 10 made to protrude from.

  The support member 26 is pivotally attached to the left side wall 33 of the attachment bracket 31. At the standby position P1, as shown in FIGS. 1 and 2, the longitudinal direction is substantially along the left vertical frame portion 4. Thus, it is stored in the backrest 2. When the airbag 16 as a driving source is deployed and inflated, the support member 26 rotates so that the tip 26b faces forward, thereby projecting forward, and the impact force acting side (left side LW) of the airbag 16 is moved. It is the structure arrange | positioned in the support position P2 to support (refer FIG. 8). Specifically, the support member 26 is attached to the left side wall 33 of the mounting bracket 31 so that the base portion 26a side can be rotated by a rotation shaft portion 28 that is disposed so that the axial direction thereof extends in the left-right direction. Yes. In addition, a guide groove 33b for guiding the rotational movement of the support member 26 is formed in a substantially circular shape around the insertion hole 33a around the insertion hole 33a through which the rotation shaft portion 28 is inserted in the left side wall 33 of the mounting bracket 31. It is formed by cutting out as an arcuate groove shape (see FIG. 7). A guide pin 29 that can be inserted into the guide groove 33b is formed on the left side of the support member 26 so as to protrude to the left side LW (left side wall 33 side). Sometimes the guide pin 29 moves along the guide groove 33b. The rear edge 33c of the guide groove 33b constitutes a stopper that restricts the forward movement of the support member 26. When the guide pin 29 comes into contact with the rear edge 33c of the guide groove 33b, the rear edge 33c moves forward. The rotational movement (protrusion) is completed, and the support member 26 is disposed at the support position P2. Further, in the case of the embodiment, the support member 26 makes the guide pin 29 abut on the front edge 33d of the guide groove 33b so that the support member 26 is substantially along the left vertical frame portion 4 at the standby position P1 and in the backrest portion 2. It is the structure accommodated in. Further, as shown in FIG. 7, the support member 26 is provided with a connecting hole 30 that allows the front end 21 b side of the tether 21 to be inserted and connected to the front edge side (lower edge side at the time of completion of the protrusion) near the front end 26 b. ing.

  The support member 26 is configured such that when the airbag 16 is deployed and inflated, the front end 26b is pulled forward from the standby position P1 by the forward movement of the tether 21 accompanying the forward projection of the bag body 17. Centering on the rotation shaft portion 28, the tip 26b projects forward from the backrest portion 2 while rotating so that the tip 26b faces forward (see FIG. 8). When the guide pin 29 comes into contact with the rear edge 33c of the guide groove 33b, the support member 26 completes rotational movement (protrusion) forward and is disposed at the support position P2, and is disposed at the support position P2. In this state, as shown in FIG. 9, the impact force acting side (left side LW) of the bag body 17 that has been inflated is supported. The support member 26 is projected forward so as to pass between the bag body 17 and the cover member 23 when the airbag 16 is deployed and inflated. The left side LW (impact force acting side) is covered over the entire surface by the cover member 23 until it is arranged at P2 (from the start of movement to the completion of movement). Further, the support member 26 is disposed so as to be inclined with respect to the vertical direction so that the front end 26b is positioned on the front upper side when the forward protrusion is completed, and the front end 26b is disposed on the upper edge 23a of the cover member 23. Is also set to a length dimension that is positioned below the shoulder portion of the driver DP (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 26 is projected forward while rotating so that the tip 26b faces forward. Then, as shown in FIG. 8, 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 26 is shown in FIGS. The left side LW is covered with the cover member 23 at the support position P2 that is the left side LW (impact force acting side) of the airbag 16 that has been inflated.

  In the airbag apparatus M of the embodiment, the support member 26 that supports the impact force acting side (left side LW) of the airbag 16 is accommodated in the backrest portion 2 of the driver seat DS that is the separation side seat, and deployed. The inflating airbag 16 is used as a drive source, and the airbag 16 projects as the airbag 16 is deployed and inflated. The cover member 23 that covers the impact force acting side (left side LW) of the support member 26 is also used as the airbag 16. It is the structure which protrudes by expansion | swelling expansion | swelling. Therefore, when the airbag 16 is deployed and inflated, the support member 26 protrudes at the same time, and the cover member 23 is also arranged so as to cover the left side LW of the support member 26, so compared with the conventional airbag device, An increase in the number of components can be suppressed and a simple configuration can be achieved. Furthermore, in the airbag apparatus M of the embodiment, the cover member 23 is configured to cover the impact force acting side (left side LW) of the support member 26 from the start of movement to the completion of movement (support position P2). Thus, even if the close side occupant is seated on the close side seat (passenger seat PS) on the impact force acting side (left side LW) of the support member 26 and the close side occupant is approaching, interference with the close side occupant Thus, the support member 26 can be smoothly protruded to a predetermined position, and the impact force acting side (left side LW) of the airbag 16 that has been inflated can be quickly supported.

  Therefore, in the airbag apparatus M of embodiment, the separation side passenger | crew (driver | operator DP) can be protected exactly with a simple structure.

  Further, in the airbag apparatus M of the embodiment, the cover member 23 is constituted by a sheet body connected to the outer peripheral wall (the left side wall portion 17b) of the airbag 16, so that the cover composed of a single sheet body. It is only necessary to connect the member to the outer peripheral wall (left side wall portion 17b) of the airbag 16, and the configuration can be further simplified. In addition, the present invention can be easily applied to an airbag apparatus having a configuration that does not include a cover member. Furthermore, in the airbag apparatus M of the embodiment, the cover member 23 is a sheet body, but since the lower edge 23b side is connected to the bag body 17 (airbag 16), when the airbag 16 is deployed and inflated, It is possible to prevent the support member 26 from turning up with the movement of the support member 26 and so on, and to smoothly cover the left side LW of the support member 27. Of course, if such a point is not taken into consideration, an airbag 40 as shown in FIGS. 11 and 12 described later may be used.

  Furthermore, in the airbag apparatus M of the embodiment, as shown in FIG. 7, the support member 26 is made of metal, and a protective layer 27 made of synthetic resin or rubber is arranged on the outer surface side. Therefore, the support member 26 has sufficient strength, can accurately support the impact force acting side (left side LW) of the airbag 16 that has received the separation side occupant (driver DP), and It is possible to suppress damage to the airbag 16 and the cover member 23 by the protective layer 27 at the time of contact with the airbag 16 and the cover member 23.

  Next, an airbag 40 according to another embodiment of the present invention will be described. As shown in FIGS. 11 and 12, the airbag 40 includes a bag body 41 that inflates by inflating an inflation gas therein, and a tether 21 </ b> A that is connected to the support member 26. The tether 21A has the same configuration as the tether 21 arranged in the airbag 16 described above, and detailed description thereof is omitted.

  The bag body 41 has an inflated complete shape viewed from the side as a substantially elliptical plate shape that protrudes obliquely upward from the backrest 2 in the same manner as the bag body 17 in the airbag 16 described above. The side is attached to the left vertical frame part 4. The bag body 41 is configured by bifurcating the left and right regions so that the support member 26 projecting therebetween can be inserted through the lower region from the vicinity of the upper and lower centers when the inflation is completed. That is, as shown in FIGS. 11 and 12, the bag main body 41 is disposed so as to cover the impact force acting side (left side LW) of the driver DP as the separation side occupant and protects the driver DP. And a cover portion 44 that is communicated from near the upper and lower centers so as to be arranged on the left side of the lower end side of the occupant protection portion 42, and extends downward. A cover member that covers the impact force acting side (left side LW) of the support member 26 is configured.

  In the case of the embodiment, the bag body 41 includes an outer right wall 41a disposed on the right side that is the driver DP side upon completion of inflation, an outer left wall 41b disposed on the left side, and an inner periphery of the lower end side region. It is set as the structure provided with the inner right side wall part 41c arrange | positioned at the right side in a side, and the inner left side wall part 41d arrange | positioned at the left side in an inner peripheral side. The outer right wall portion 41a and the outer left wall portion 41b are configured to have the same outer shape in a flat state, and the inner right wall portion 41c and the inner left wall portion 41d are in an outer shape in a flat state. Is configured as an outer shape substantially the same as the region of the lower half of the outer right wall 41a and the outer left wall 41b. The bag body 41 includes the outer right side wall portion 41a and the outer left side wall portion 41b at the upper edges thereof, the inner right side wall portion 41c and the inner left side wall portion 41d at the upper edges thereof, the outer right side wall portion 41a and the inner right side wall portion 41c. The lower edges of each other, the lower left wall 41b and the lower left wall 41d are joined together to form a bag. And in the bag main body 41 of embodiment, although not shown in figure, the attachment hole for making the attachment bolt 12b of the inflator 10 penetrate is formed in the lower end vicinity of the outer right side wall part 41a used as the lower end vicinity of the passenger | crew protection part 42. ing. Further, in the bag main body 41 of the embodiment, the tether 21A is provided on the inner right side wall portion 41c that becomes the impact force acting side (left side LW) of the lower portion 42b arranged on the right side of the cover portion 44 in the occupant protection portion 42. It is arranged on the outer surface side.

  The cover portion 44 is configured to cover the impact force acting side (left side LW) of the support member 26 from the start of movement to the completion of movement (arrangement at the support position P2). The upper end side communicated with the occupant protection part 42 at the time of completion is positioned above the tip 26b of the support member 26 at the time of completion of projection (support position P2) and above the movement locus of the tip 26b of the support member 26. (See FIG. 13).

  In the bag body 41 of the embodiment, the occupant protection part 42 has an upper part 42a positioned above the cover part 44, the occupant protection part 42 has a lower part 42b disposed on the right side of the cover part 44, and a cover part. 44, thickness regulating members 45, 46, 47 for regulating the thickness at the time of completion of expansion are respectively arranged. Each thickness regulating member 45, 46, 47 is formed of a flexible belt-like woven fabric and is arranged so as to have a substantially semicircular arc shape when viewed from the side. The thickness regulating member 45 disposed in the region of the upper part 42a in the occupant protection part 42 has both edge sides sewn to the outer right side wall part 41a and the outer left side wall part 41b, respectively. The thickness at the completion of expansion is regulated. The thickness restricting member 46 disposed in the region of the lower portion 42b in the occupant protection portion 42 is configured such that the disposition position coincides with the thickness restricting member 47 disposed in the cover portion 44 when viewed from the side. Therefore, both edge sides are respectively sewn to the outer right side wall part 41a and the inner right side wall part 41c to regulate the thickness of the lower part 42b when the expansion is completed. The thickness regulating member 47 arranged in the region of the cover part 44 is sewn to the outer left side wall part 41b and the inner left side wall part 41d, respectively, so that the thickness when the cover part 44 is completely expanded is secured. Is regulated. In the case of the embodiment, the cover part 44 is configured so that the thickness dimension at the completion of the inflation is smaller than the thickness dimension of the occupant protection part 42.

  If the airbag 40 is configured as described above, when the support member 26 is completely projected, the impact force acting side (left side LW) of the support member 26 flows the inflation gas into the interior as shown in FIGS. Since the cover member 44 is covered with the cover portion 44 that is inflated, when the close-side occupant is seated in the close-side seat (passenger seat PS), the support member 26 is interposed via the expansion portion (cover portion 44). Interference with the close side occupant can be further suppressed.

  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, 40 ... airbag, 17, 41 ... bag body, 23 ... cover member, 26 ... support member, 44 ... cover part, DP ... driver (remote side) Occupant), DS ... driver seat (separated side seat), LW ... left side (impact force acting side), RW ... right side (separated side), M ... airbag device.

Claims (3)

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. An airbag device having a protectable configuration,
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;
A flexible cover member disposed on the airbag, capable of covering the impact force acting side of the support member from the start of the protrusion movement of the support member to the completion of the protrusion movement;
With
The airbag device according to claim 1, wherein the cover member includes a portion of the airbag that is inflated by inflating an inflating gas. 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. An airbag device having a protectable configuration,
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;
A flexible cover member disposed on the airbag, capable of covering the impact force acting side of the support member from the start of the protrusion movement of the support member to the completion of the protrusion movement;
With
The base side, which is the lower end when housed in the backrest portion, is placed on the backrest side so that the support member projects the tip end side, which is the upper end when housed in the backrest portion, from the backrest portion. As a configuration that can be pivotally attached to,
The airbag is configured to include a bag body and a tether connected to the support member,
The tether is connected to a position where the base side is slightly below the center of the top and bottom at the front edge when the bag body is completely inflated, and the tip side is connected to the tip side of the support member. When the bag body expands so as to protrude forward from the backrest portion when deployed and inflated, the distal end side of the support member protrudes.
The cover member is composed of a sheet body connected to the outer peripheral wall of the bag body, and can cover an area of the lower half of the bag body when the inflation is completed, Configured to be positioned above the tip of the support member;
The airbag device is characterized in that the upper edge of the cover member is arranged so as to be inclined with respect to the front-rear direction so that the rear end faces upward when the inflation of the airbag is completed. . The airbag device according to claim 1 or 2 , wherein the support member is made of metal, and a protective layer made of synthetic resin or rubber is disposed on the outer surface side.

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