JP6438436B2 - Side airbag device for vehicle - Google Patents

Description

  The present invention can improve the occupant protection performance by appropriately controlling the inflated posture of the side airbag against the situation where the rotation around the base portion of the side airbag is assumed for the general side airbag. The present invention relates to a vehicle side airbag device that can be used.

  Patent Document 1 is known as a document in which the outer shape of the side airbag has a dent. The “occupant protection device for a vehicle” in Patent Document 1 has an object to contribute to improving the occupant restraining performance of the far side airbag. In the vehicle occupant protection device, the far side airbag is inflated and deployed in the tunnel side. The front bag portion protruding toward the vehicle front side of the front portion and the rear bag portion positioned on the vehicle rear side of the front bag portion and having an internal pressure higher than that of the front bag portion are partitioned. When the left and right vehicle seats are relatively close to each other by the impact of the side collision, the rear bag portions of the far side airbag are compressed in the vehicle width direction between the left and right seat backs. As a result, the impact is absorbed and the far side airbags become reaction surfaces of each other, so that the internal pressure of each far side airbag rises.

Japanese Patent Laying-Open No. 2015-131586

  As for the side airbag built in the seat, the base is fixed to the seat side. When the inflator gas is introduced into the side airbag, the side airbag is deployed and inflated from the seat toward the front in the vehicle front-rear direction to protect the occupant seated on the seat.

  While the base portion is fixed to the seat side, the front end portion of the side airbag that protrudes forward in the vehicle front-rear direction by deployment and inflation is in a free state that swings left and right in the vehicle width direction. That is, in the side airbag that has been deployed and inflated, the distal end portion that is the other end tends to rotate horizontally in the horizontal direction with the base portion that is one end as the center.

  A near-side airbag that faces a vehicle body member such as a door has a vehicle body member as a wall, so that the rotational action is easily restricted, while the far-side airbag that is deployed and inflated at the center in the vehicle width direction of the passenger compartment. Is difficult to suppress this rotational action.

  Specifically, when two occupants are seated side by side on the seat, one of two adjacent far side airbags protecting these two occupants regulates the rotation of the other, The other far side airbag is received as a wall, and thereby each occupant is protected by each far side airbag.

  However, if there is one occupant, even if the two far side airbags are deployed and inflated, both of these far side airbags will rotate without being subject to rotation restrictions.

  Due to this rotation, the far-side airbag has swung to avoid the occupant with respect to the movement of the occupant in the vehicle width direction, and there is a problem that it is difficult to protect the occupant sufficiently and appropriately. More specifically, there is a risk that the site for accurately receiving the head of the occupant cannot be secured, and the head injury value increases.

  The present invention was devised in view of the above-described conventional problems, and for the side airbag in general, the side airbag has an inflated posture in response to a situation where rotation around the base portion of the side airbag is assumed. An object of the present invention is to provide a vehicle side airbag device that can be appropriately controlled and can improve passenger protection performance.

  The side airbag device for a vehicle according to the present invention includes a side air that has a base fixed to the seat side and is deployed and inflated forward from the seat in the front-rear direction of the vehicle in order to protect an occupant seated in the seat. A side airbag device for a vehicle having a bag, wherein the side airbag is deployed from the outer peripheral edge of the side airbag to the inward side so that a constricted portion appears when viewed from the left and right in the vehicle width direction. A pair of inwardly facing edges and a bent edge that connects these inward edges are formed in a concave shape from the outer peripheral edge of the side airbag toward the inward side. The inward edge portions are provided so as to be close to and away from each other and a direction crossing the groove portion, and one end portion in the length direction is provided on the side airbag on the one inward edge portion side. Spliced and long A mooring member whose other end in the direction extends to the other inward edge, and a mooring control mechanism for releasably anchoring the other end of the mooring member on the other inward edge And when the side airbag is deployed and inflated, the mooring control mechanism sets the mooring of the other end of the mooring member in a non-released state, and the inflating edges of the side airbag do not spread. The posture and the mooring of the other end portion of the mooring member are released, and the inward edge portions of the side airbags are separated from each other, and the groove portion expands to be one of the second inflated postures. .

  The mooring control mechanism is preferably configured by a mooring portion that joins the other end portion of the mooring member to the side airbag on the other inward edge portion side, and a cutter that cuts the mooring member. . It is preferable that the mooring control mechanism is a locking unit that is fixed to the seat and detachably locks the other end of the mooring member.

  The side airbag includes an upper bag region above the groove portion and a lower bag region including the base portion below the groove portion in the vertical height direction of the mooring member. When the mooring is released, it is desirable that the upper bag region bulges in the direction along the outer peripheral edge of the side airbag as the groove portion expands with respect to the lower bag region.

  It is preferable that the groove portion is provided on the rear side in the vehicle front-rear direction of the side airbag toward the base. The groove portion is preferably provided below the center in the vertical height direction of the side airbag.

  The side airbag is preferably a far side airbag.

  The mooring control mechanism includes seating detection means for detecting an occupant, and when the inflator for deploying and inflating the side airbag is activated, the seating detection means is provided for both of the two seats positioned on both sides of the farside airbag. When the occupant is detected at, it is desirable to keep the mooring member in the moored state. Preferably, the mooring control mechanism releases the mooring of the mooring member when the seating detection means detects an occupant with one of the two seats.

  The mooring control mechanism is provided with a slant detection unit, and when the slant detection unit detects a slant that activates an inflator that deploys and inflates the side airbag, it is far from the seat near the slant. It is desirable to release the mooring of the mooring member of the far side airbag of the sheet on the near side.

  The side airbag is preferably a near side airbag. The mooring control mechanism includes a slanting detection means, and when the slanting detection means detects a slanting projection in which an inflator that deploys and inflates the side airbag is activated, the tethering of the tethering member of the near side airbag is performed. It is desirable to cancel.

  The side airbag is preferably deployed and inflated toward both sides of the seat toward the side of the seat.

  In the side airbag device for a vehicle according to the present invention, the inflation posture of the side airbag is appropriately controlled with respect to a situation in which rotation around the base portion of the side airbag is assumed for a general side airbag. And occupant protection performance can be improved.

1 is a plan view of a vehicle showing a state in which a far side airbag and a near side airbag are deployed and inflated, which is a preferred embodiment of a vehicle side airbag device according to the present invention. It is the front view which looked at the side airbag from the vehicle width direction, and shows the 1st expansion posture when the side airbag applied as a fur side airbag and a near side airbag shown in FIG. 1 expand | deploys. It is the front view which looked at the side airbag from the vehicle width direction which shows the 2nd inflation posture when the side airbag shown in FIG. 2 expand | deploys and inflates. It is explanatory drawing explaining the positional relationship of the side airbag and seat of a 1st expansion attitude | position shown in FIG. It is explanatory drawing explaining the positional relationship of the side airbag and seat of a 2nd expansion attitude | position shown in FIG. It is other embodiment of the side airbag apparatus for vehicles which concerns on this invention, Comprising: It is a top view of a vehicle which shows a mode that the far side airbag and the near side airbag were expand | deployed and expanded in the single seat vehicle.

  Hereinafter, a preferred embodiment of a vehicle side airbag device according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a plan view of a vehicle showing a state in which a far side airbag and a near side airbag provided in the vehicle side airbag device according to the present embodiment are deployed and inflated, and FIG. 2 is a far side airbag shown in FIG. The front view which looked at the side airbag from the vehicle width direction which shows the 1st inflation posture when the side airbag applied as a bag and a near side airbag expand | deploys, and FIG. 3 is the side airbag shown in FIG. The front view which looked at the side airbag from the vehicle width direction which shows the 2nd expansion attitude | position when FIG. 4 expand | deploys, FIG. 4 shows the positional relationship of the side airbag and seat of the 1st expansion attitude | position shown in FIG. FIG. 5 is an explanatory diagram for explaining the positional relationship between the side airbag and the seat in the second inflated posture shown in FIG.

  FIG. 1 is a plan view of the interior of a typical vehicle in which two passengers get on the front seat. Therefore, two seats 1 are arranged adjacent to each other in the vehicle width direction at the front seat. Each of these seats 1 is provided with a near-side airbag 3 on the door 2 side and a far-side airbag 4 on the shaft tunnel (not shown) side.

  As shown in FIG. 1, the near-side airbag 3 and the far-side airbag 4 are provided in any part of the seat 1, such as a seat back, as is well known. As for both the near side airbag 3 and the far side airbag 4, as shown in FIG.4 and FIG.5, the base part 4a is fixed to the seat frame 1a of a seat back (illustration shows the case of the far side airbag 4).

  Each of the near-side airbag 3 and the far-side airbag 4 is individually provided with an inflator 5 built in the vicinity of the base portion 4a. The inflator 5 is attached and fixed to the seat 1 side, for example, the seat frame 1a.

  When the inflator gas ejected from the inflator 5 is introduced into the near side airbag 3 and the far side airbag 4, the base portion 4 a serves as a support point, and the near side airbag 3 extends along the door 2 to the far side airbag. 4 is deployed and inflated from the seat back toward the front in the vehicle front-rear direction along the shaft tunnel to protect the occupant seated in the seat 1.

  The vehicle side airbag device according to the present invention may be applied to both the far side airbag 4 and the near side airbag 3, and may be applied only to either the far side 4 or the near side 3. Also good. In the following, for convenience of explanation, the case where it is applied to the far side airbag 4 is taken up and described, but the application to the near side airbag 3 is understood by replacing the far side airbag 4 with the near side airbag 3.

  FIGS. 2 and 3 show a state in which the deployed and inflated far-side airbag 4 is viewed from the left and right in the vehicle width direction. The outer contour of the far-side airbag 4 viewed from the direction includes a groove portion 6. Is set. As is well known, the far-side airbag 4 is formed by laying two base fabrics made of a flexible material on top and bottom, or folding a single base fabric on top of each other and sewing them into a bag shape. Is formed.

  The groove portion 6 is formed on the inner side of the base fabric forming the bag-shaped far side airbag 4 from the outer peripheral edge 4b of the far side airbag 4 (when the far side airbag 4 is folded flat) It is formed by incising toward the side) and then joining the base fabric in the form of a bag.

  Specifically, the groove portion 6 has a pair of inward edge portions 6a and 6b arranged from the outer peripheral edge 4b of the far side airbag 4 to the inner side and facing each other, and the inward edge portions 6a and 6b. It has a bent edge 6c connected on the side. Thereby, the groove part 6 is formed in a concave shape from the outer peripheral edge 4 b of the far side airbag 4 toward the inner side thereof.

  In the present embodiment, as shown in FIG. 3, the groove portion 6 is brought close to the base portion 4 a and forms a concave shape on the rear side in the vehicle front-rear direction of the far side airbag 4 from the rear in the vehicle front-rear direction to the front. As described above, the other upper inward edge 6a is formed such that the bent edge 6c is forward in the vehicle front-rear direction and one lower inward edge 6b is directed rearward in the vehicle front-rear direction from the bent edge 6c. However, it is provided so as to be directed rearward in the vehicle front-rear direction obliquely upward from the bent edge portion 6c.

  Since the base fabric is formed of a flexible material, the groove portion 6 is separated through the bent edge portion 6c so as to widen the interval between the inward edge portions 6a and 6b or between the inward edge portions 6a and 6b. The inward edge portions 6a and 6b are configured so as to be close to and away from each other when the distance between them is narrowed or close so that the groove portion 6 is closed by contact.

  By providing such a groove portion 6, when the groove portions 6 are narrowed (closed) by bringing the inward edges 6 a and 6 b of the groove portion 6 close to each other, the far side airbag 4 has When this expands and expands, the constricted portion 7 appears when viewed from the left and right in the vehicle width direction. On the other hand, when the groove portion 6 is expanded, the constricted portion 7 disappears.

  In this embodiment, as understood from FIGS. 4 and 5, the far-side airbag 4 includes an upper bag region X above the groove portion 6 in the vertical height direction (vehicle vertical height direction). The lower bag region Y is provided below the groove portion 6 and includes the base portion 4a.

  As can be understood by comparing FIG. 2 and FIG. 3, when the groove portion 6 is expanded from the narrowed state, the upper bag region X has the outer peripheral edge of the far side airbag 4 with respect to the lower bag region Y. It comes out in the direction along 4b. In the illustrated example, the groove portion 6 is provided below the center of the far side airbag 4 in the vertical height direction.

  The far side airbag 4 is provided with a mooring member 8 with respect to the groove portion 6. The mooring member 8 is made of a flexible material and is appropriately formed in a band shape or a string shape. The mooring member 8 is arranged in a direction across the groove portion 6. The mooring member 8 is provided for control of holding the groove portion 6 in a narrowed state so that the groove portion 6 is not widened or widened. Therefore, the mooring member 8 may be disposed so as to cross the groove portion 6, or in a direction that does not cross the groove portion 6 and avoids the groove portion 6. May be arranged.

  The anchoring member 8 is formed with a length dimension at least across the groove portion 6. The mooring member 8 is joined to the base fabric of the far side airbag 4 at one end 8a in the length direction on one inward edge side, in this embodiment, on the inward edge 6a side on the upper side in the vehicle vertical height direction. Is done. The other end portion 8b in the length direction of the mooring member 8 is extended to the other inward edge portion side, in this embodiment, the inward edge portion 6b side on the lower side in the vehicle vertical height direction.

  In the vehicle side airbag device according to the present embodiment, as shown in FIGS. 2 to 5, the other end portion 8 b of the mooring member 8 is arranged on the lower inward edge portion 6 b side in order to control the mooring member 8. A mooring control mechanism 9 for mooring releasably is provided.

  By this mooring control mechanism 9, when the far-side airbag 4 is deployed and inflated, the mooring of the other end portion 8 b of the mooring member 8 with respect to the lower inward edge portion 6 b side is not released, and the far-side airbag 4. The inward edges 6a and 6b of the first and second grooves 6 are held close to each other and the groove portion 6 is held in a narrowed state, that is, the first inflated posture in which the inward edges 6a and 6b do not expand, and the other end of the anchoring member 8 The mooring of 8b is cancelled | released, and the effect | action set as either the 2nd expansion | swelling attitude | position which the inward edge edge parts 6a and 6b of the far side airbag 4 spread apart and the groove part 6 spreads is acquired.

  In the vehicle side airbag device according to the present embodiment, the mooring control mechanism 9 includes the mooring portion that joins the other end portion 8b of the mooring member 8 to the far side airbag 4 on the lower inward edge portion 6b side. 9a and a cutter 9b for cutting the mooring member 8. As shown in FIG. 2, the mooring portion 9 a is joined to the base fabric of the far side airbag 4 in a first inflated posture in which the groove portion 6 does not expand.

  Therefore, when the longitudinal end portions 8a and 8b of the mooring member 8 are joined to the far side airbag 4, the groove portion 6 does not expand. If the groove portion 6 does not expand, a first inflated posture in which the upper bag region X of the far side airbag 4 is raised almost immediately above the lower bag region Y is obtained.

  The cutter 9b is fixed to the seat frame 1a of the seat 1 and the like. The cutter 9b is normally housed in the case, and in order to cut the mooring member 8 when the far side airbag 4 is deployed and inflated according to control based on a detection signal described later, the cutter 9b is moved from the case toward the mooring member 8. To be advanced.

  When the cutter 9b cuts the mooring member 8 and the mooring is released thereby, the tension is generated in the groove portion 6 and its periphery together with the deployment and expansion action of the far side airbag 4, and the groove portion 6 is Can be spread. When the groove portion 6 is widened, the upper bag region X is expanded with respect to the lower bag region Y along the outer peripheral edge 4b of the far side airbag 4 as the groove portion 6 expands. As a result, a second inflated posture that projects forward in the vehicle front-rear direction so as to expand is obtained.

  Although the mooring control mechanism 9 is not shown, the mooring control mechanism 9 may be a locking unit that is fixed to the seat frame 1a of the seat 1 and that removably locks the other end 8b of the mooring member 8 instead of the above-described configuration. Good.

  That is, as a locking means, a hook that latches and locks the other end 8b of the mooring member 8 is provided, and the hook is detached from the mooring member 8 instead of cutting the mooring member 8 with the cutter 9b. You may employ | adopt the structure which cancels | releases the mooring of the other end part 8b of the mooring member 8 currently latched by operation | movement.

  The mooring control mechanism 9 which places the far-side airbag 4 in the first inflated position or the second inflated position by mooring the mooring member 8 (in a state where the mooring is not released) or releasing the mooring is further in a state in which the occupant is in the vehicle In order to set these inflated postures in correspondence with each other, as shown in FIG. 1, seating detection means 10 for detecting an occupant is provided. The seating detection means 10 is provided for each seat 1 and detects whether an occupant is seated on the seat 1.

  A controller 11 is provided between the seating detection means 10 and the cutter 9b or the locking means. The detection signal of the seating detection means 10 is input to the controller 11, and the controller 11 outputs a control signal to the cutter 9b or the locking means.

  When the seating detection means 10 detects an occupant in both of the two seats 1 positioned on both sides of the far-side airbag 4 when the inflator 5 for deploying and inflating the far-side airbag 4 is activated, that is, at the time of impact on the vehicle. In response to these detection signals, the controller 11 outputs a non-operating control signal to the cutter 9b or the locking means in order to hold the mooring member 8 in the moored (non-released) state.

  On the other hand, one of the two seats 1 positioned on both sides of the far-side airbag 4 when the seating detection means 10 starts up the inflator 5 that deploys and inflates the far-side airbag 4, that is, at the time of impact on the vehicle. If the occupant is detected at the other end and the occupant is not detected at the other end, the controller 11 causes the mooring member 8 to be engaged with the cutter 9b or the locking means to release the mooring of the mooring member 8 with respect to the seat 1 on which the occupant is seated. A control signal such as disconnecting is output.

  When a non-actuated control signal is input to the cutter 9b or the locking means, the far side airbag 4 is deployed and inflated in the first inflated posture. When a control signal such as cutting the mooring member 8 is input to the cutter 9b or the locking means, the far-side airbag 4 is deployed in the second inflated posture, in which the deployed and inflated range is expanded more than the first inflated posture. Inflated.

  Next, the operation of the vehicle side airbag device according to the present embodiment will be described with reference to FIGS. 4 and 5. The side airbag device for a vehicle according to the present embodiment basically has a lower inward edge portion 6b of the other end portion 8b of the mooring member 8 by the mooring control mechanism 9 when the far side airbag 4 is deployed and inflated. The first inflated posture in which the inward edge portions 6a, 6b of the far side airbag 4 do not spread and the mooring of the other end portion 8b of the mooring member 8 are released by setting the mooring to the side to the non-released state, Since the inward edge portions 6a, 6b of the bag 4 can be separated from each other and the groove portion 6 can be expanded, as shown in FIG. In addition to being able to protect the occupant by the first inflated posture on the side of the seat 1, as shown in FIG. 5, the occupant can be protected in the second inflated posture in which the expansion and expansion range is widened forward of the seat 1 by releasing the mooring.

  For this reason, when the rotational action of the far side airbag 4 is restricted, it is deployed in the first inflated posture, and when the restriction of the rotational action is difficult, the occupant can be received even if it rotates. By deploying in the two inflated posture, and taking into account the occupant posture at the time of the collision, the far side airbag 4 can be deployed and inflated in two ways to protect the occupant, particularly the head.

  The mooring control mechanism 9 includes a mooring portion 9a for joining the other end portion 8b of the mooring member 8 to the far side airbag 4 on the lower inward edge portion 6b side, and a cutter 9b for cutting the mooring member 8. Therefore, it can be reliably operated with a simple configuration.

  Alternatively, since the mooring control mechanism 9 is constituted by the locking means fixed to the seat 1 and detachably locking the other end portion 8b of the mooring member 8, it can be reliably operated with a simple configuration.

  The far-side airbag 4 includes an upper bag region X above the groove portion 6 and a lower bag region Y including the base portion 4a below the groove portion 6 in the vertical height direction. When the mooring of the member 8 is released, the upper bag region X projects toward the direction along the outer peripheral edge 4b of the far side airbag 4 as the groove portion 6 expands with respect to the lower bag region Y. The deployment range of the airbag 4 can be expanded.

  Since the groove portion 6 is provided on the rear side in the vehicle front-rear direction of the far-side airbag 4 close to the base portion 4a, the deployed and inflated range in the second inflated posture can be surely directed toward the front of the vehicle. Protection performance can be improved.

  Since the groove portion 6 is provided below the center in the vertical height direction of the far side airbag 4, the expansion of the expanded and inflated range obtained in the second inflated posture becomes larger in the upper bag region X of the far side airbag 4. , Occupants can be efficiently protected.

    The above configuration is applied to the far-side airbag 4 that is more likely to rotate than the near-side airbag 3 that faces the door 2, and passenger protection performance can be improved.

  The mooring control mechanism 9 includes a seating detection unit 10 that detects an occupant. When the inflator 5 that deploys and inflates the far-side airbag 4 is activated, the seating detection unit 10 has two seating detection units 10 positioned on both sides of the far-side airbag 4. When an occupant is detected in both seats 1, the mooring member 8 is held in a non-releasing state, and when the seating detection means 10 detects an occupant in one of the two seats 1, the mooring of the mooring member 8 is released. Therefore, a mode in which the rotational action of the far side airbag 4 can be regulated, specifically, two occupants seated on the seat 1 side by side, and the far side airbags 4 that are inflated adjacent to each other are mutually connected. In such a case, the mooring member 8 is brought into a non-releasing state of the mooring so that the inward edges 6a, 6b of the groove portion 6 are brought close to each other so that the groove portion 6 does not spread. By inflating the far side airbag 4 in the first expansion position, conventional in no way inferior occupant protection, in particular, it is possible to ensure protection of the occupant's head.

  On the other hand, it is difficult to restrict the rotational action of the far-side airbag 4, that is, the occupant is seated only in one of the two seats 1 arranged side by side, and the adjacent far-side airbag 4 is deployed together. When the far side airbag 4 rotates without being able to be received as a wall even if it is inflated, the inward edge portions 6a and 6b of the groove portion 6 are separated from each other and the groove portion Even if the mooring of the mooring member 8 is released so that 6 spreads, and thereby the far side airbag 4 is inflated in the second inflated posture in which the deployment inflating range is widened, The passenger head protection function can be ensured by the expansion of the inflated and expanded range of the far-side airbag 4.

  As shown in FIG. 1, the mooring control mechanism 9 may be provided with oblique collision detection means 12 and 13 in order to set the inflated posture of the far side airbag 4 corresponding to the aspect of the oblique protrusion. . The oblique collision detection means 12 and 13 are provided as a pair on the left and right in the vehicle width direction. The right side slant detection unit 12 detects a slant from the right side of the vehicle, and the left side slant detection unit 13 detects a slant from the left side of the vehicle.

  The oblique collision detection means 12 and 13 are connected to the controller 11 in the same manner as the seating detection means 10. Detection signals from the respective oblique collision detection means 12 and 13 are input to the controller 11, and the controller 11 outputs a control signal to the cutter 9b or the locking means.

  For example, when the right oblique detection means 12 detects an oblique protrusion from the right when the inflator 5 for deploying and inflating the far side airbag 4 is activated, that is, at the time of impact on the vehicle, the detection signal The controller 11 holds the mooring member 8 of the far-side airbag 4 of the left seat 1 out of the right seat 1 near the oblique projection and the left seat 1 far away, and the right seat 1 In order to release the mooring of the mooring member 8 of the far-side airbag 4 of the seat 1, an inoperative control signal is output to the cutter 9 b or the locking means of the left seat 1, and the cutter 9 b or the mooring of the right seat 1 is engaged. A control signal such as cutting the mooring member 8 is output to the stopping means.

  Therefore, in the case of the oblique projection from the right side, the far-side airbag of the left seat 1 is deployed and inflated in the first inflated posture and the far-side airbag of the right seat is in the second inflated posture. In the case of the oblique projection from the left, the far side airbag 4 of the right seat 1 is deployed and inflated in the first inflated position, and the far side airbag 4 of the left seat 1 is inflated in the second inflated position. .

  The occupant protection performance against the oblique collision can be improved by providing the oblique collision detecting means 12 and 13 and selecting the first and second inflating postures of the far side airbag 4. Other configurations and operational effects are the same as in the above embodiment.

  In the above embodiment, the far side airbag 4 has been described as an object. However, the side airbag may be the near side airbag 3 and may be selectively deployed and inflated to the first and second inflating postures. That is, even the near side airbag 3 can be configured similarly to the far side airbag 4. For the mooring control mechanism 9, the oblique collision detection means 12, 13 are employed.

  Specifically, when the right-side oblique detection means 12 detects an oblique projection from the right side when the inflator 5 for deploying and inflating the near-side airbag 3 is activated, that is, at the time of impact on the vehicle, the detection signal Accordingly, the controller 11 holds the mooring member 8 of the near-side airbag 3 of the left seat 1 out of the right seat 1 near the oblique projection and the left seat 1 far from the mooring, and the right side In order to release the mooring of the mooring member 8 of the near-side airbag 3 of the seat 1, an inactive control signal is output to the cutter 9 b or the locking means of the left seat 1, and the cutter 9 b or the mooring of the right seat 1 is engaged. A control signal such as cutting the mooring member 8 is output to the stopping means.

  Therefore, in the case of the oblique projection from the right side, the near-side airbag 3 of the left seat 1 is deployed and inflated in the first inflated posture, and the near-side airbag 3 of the right seat 1 is inflated in the second inflated posture. In the case of the oblique projection from the left side, the near-side airbag 3 of the right seat 1 is deployed and inflated in the first inflated posture, and the near-side airbag 3 of the left seat 1 is inflated in the second inflated posture.

  The occupant protection performance against the oblique collision can be improved by providing the oblique collision detecting means 12 and 13 and selecting the first and second inflating postures of the near-side airbag 3. Other configurations and operational effects are the same as in the above embodiment.

  FIG. 6 shows the case of a single seat vehicle. FIG. 6 is a plan view of the vehicle showing how the far-side airbag and the near-side airbag are deployed and inflated in the single-seat vehicle. In the case of a single seat vehicle, the distance between the door 2 and the seat 1 (occupant) is often set wide. Therefore, the side airbag that is deployed and inflated on both sides of one occupant is the far-side airbag 4.

  In the case of a single-seat vehicle, the side airbag corresponding to the above-described far-side airbag 4 is deployed and inflated toward the side of the seat 1 on both sides of the seat 1, whereby the first and second inflations are performed. The occupant including the head can be appropriately protected depending on the posture.

  The vehicle side airbag device described above is a preferred example of the present invention, and other embodiments can be implemented or performed by various methods. In particular, the present invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise stated in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.

DESCRIPTION OF SYMBOLS 1 Seat 3 Near side airbag 4 Far side airbag 4a Base part of a far side airbag 4b Outer peripheral edge of a far side airbag 5 Inflator 6 Groove part 6a Upper inward edge 6b Lower inward edge 6c Bending edge DESCRIPTION OF SYMBOLS 7 Constricted part 8 Mooring member 8a One end part of the mooring member length direction 8b The other end part of the mooring member length direction 9 Mooring control mechanism 9a Mooring part 9b Cutter 10 Seating detection means 12, 13 Inclination detection means X Upper bag Area Y Lower bag area

Claims (13)

A vehicle side airbag device having a base airbag that is secured to a seat side and has a side airbag that is deployed and inflated forward from the seat in the front-rear direction of the vehicle in order to protect an occupant seated in the seat. ,
A pair of inward edges and an inward direction of the side airbags arranged so as to face each other inward from the outer peripheral edge of the side airbag so that a constricted portion appears in the side airbag in the deployed and expanded side airbag when viewed from the left and right in the vehicle width direction. It has a bent edge that connects the edges, and is formed in a concave shape from the outer peripheral edge of the side airbag toward the inward side, and the inward edges can be moved toward and away from each other via the bent edge. A groove portion,
Provided in a direction straddling the groove portion, one end portion in the length direction is joined to the side airbag on one inward edge side, and the other end portion in the length direction is in the other inward direction A mooring member extending to the edge side;
A mooring control mechanism for releasably mooring the other end of the mooring member on the other inward edge side,
When the side airbag is deployed and inflated, the mooring control mechanism sets the mooring of the other end of the mooring member in a non-released state, and the first inflated posture in which the inward edges of the side airbag do not spread, The vehicle side, wherein the mooring of the other end portion of the mooring member is released and the inward edge portions of the side airbag are separated from each other so that the groove portion is expanded. Airbag device.   The mooring control mechanism includes a mooring portion that joins the other end portion of the mooring member to the side airbag on the other inward edge portion side, and a cutter that cuts the mooring member. The vehicle side airbag device according to claim 1.   2. The vehicle side airbag device according to claim 1, wherein the mooring control mechanism is a locking means fixed to the seat and detachably locking the other end of the mooring member.   The side airbag includes an upper bag region above the groove portion and a lower bag region including the base portion below the groove portion in the vertical height direction of the mooring member. 4. When the mooring is released, the upper bag region protrudes in a direction along the outer peripheral edge of the side airbag according to the expansion of the groove portion with respect to the lower bag region. The vehicle side airbag device according to Item.   The vehicle side airbag device according to any one of claims 1 to 4, wherein the groove portion is provided on a rear side in the vehicle front-rear direction of the side airbag toward the base portion.   The vehicle side airbag device according to any one of claims 1 to 5, wherein the groove portion is provided below a center in a vertical height direction of the side airbag.   The vehicle side airbag device according to any one of claims 1 to 6, wherein the side airbag is a far side airbag.   The mooring control mechanism includes seating detection means for detecting an occupant, and when the inflator for deploying and inflating the side airbag is activated, the seating detection means is provided for both of the two seats positioned on both sides of the farside airbag. The vehicle side airbag device according to claim 7, wherein the mooring member is held in a moored state when an occupant is detected.   9. The vehicle side airbag according to claim 8, wherein the mooring control mechanism releases the mooring of the mooring member when the seating detection unit detects an occupant with one of the two seats. apparatus.   The mooring control mechanism is provided with a slant detection unit, and when the slant detection unit detects a slant that activates an inflator that deploys and inflates the side airbag, it is far from the seat near the slant. The vehicle side airbag device according to claim 7, wherein the mooring member of the mooring member of the far side airbag of the near side seat among the side seats is released.   The vehicle side airbag device according to any one of claims 1 to 6, wherein the side airbag is a near side airbag.   The mooring control mechanism includes a slanting detection means, and when the slanting detection means detects a slanting projection in which an inflator that deploys and inflates the side airbag is activated, the tethering of the tethering member of the near side airbag is performed. The vehicle side airbag device according to claim 11, wherein the vehicle side airbag device is released.   The vehicle side airbag device according to any one of claims 1 to 12, wherein the side airbag is deployed and inflated toward both sides of the seat on both sides of the seat.

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