JP5610531B2 - Side airbag and side airbag device - Google Patents

Description

  The present invention relates to a side airbag and a side airbag device that are deployed from a folded state to a side of a vehicle seat.

  2. Description of the Related Art Conventionally, a side airbag device that protects an occupant by deploying an airbag on the side of the occupant seated in an automobile seat is known. The side airbag device includes a side airbag housed in a side portion of a seat and an inflator for supplying gas to the side airbag, and the side airbag is inflated and deployed between a passenger seated at a side collision and a door. And it is designed to protect passengers.

  Such a side airbag is inflated and deployed on the side of a seated occupant and restrains and protects the occupant trying to move sideways. A structure that quickly deploys in a narrow space between the inside and the occupant from the side is required.

  However, as a result of the experiment with the dummy, the occupant took a posture of lying down sideways and sleeping on the seat of the seat, and further, the top of the head was brought close to the door and directed to the outside of the passenger compartment, and the back of the head In a special position where the side airbag is placed along the back of the seat, in the first stage of deployment of the side airbag, the side airbag is deployed so that it slides between the head of the dummy and the door. Rather than inflating the side airbag, the side airbag that is deployed pushes the head of the dummy forward and moves it in a nod, thereby smoothly inflating and deploying the side airbag while controlling the force applied to the dummy. The possibility of effective protection was shown.

  In this regard, a configuration using a belt-shaped deployment guide cloth is known as a configuration for controlling the behavior of the side airbag (see, for example, Patent Document 1). In the configuration of this Patent Document 1, the deployment guide cloth is disposed along the occupant side of the bag-shaped airbag, and the base end is overlapped and fixed on the base end of the airbag, and the front end portion faces outward with the airbag. It is wound around and folded. In this configuration, when the airbag starts to inflate and unfolds, the deployment guide cloth is positioned along the side surface on the passenger side of the airbag in the middle of deployment. Due to the frictional force acting on the airbag, the deployment direction of the airbag is deflected toward the passenger (non-door side), and the airbag can be deployed smoothly without strongly interfering with the inner surface of the door.

  In this configuration, the deployment guide cloth is disposed on the occupant side of the airbag and is disposed over substantially the entire length in the front-rear direction of the airbag. In addition, this configuration suppresses strong interference between the airbag and the inner surface of the door and protects the occupant by smooth deployment. The side airbag can be smoothly controlled while controlling the force applied to the dummy in a special posture. It is not intended to inflate and deploy.

  Moreover, about the airbag for passenger seat passenger | crew, the structure provided with the application cloth with the bag-shaped airbag main body is known (for example, refer patent document 2). In the structure of this patent document 2, the covering cloth is arrange | positioned so that the surface of the passenger | crew side wall part which is a front part of an airbag main body may be covered. And when this contact cloth contacts with a passenger | crew in the middle of the expansion | deployment of the airbag main body, it is supposed that the load which an airbag gives to a passenger | crew will be suppressed by moving with respect to a passenger | crew side wall part.

  In general, an airbag for a passenger on the passenger seat is arranged in front of the passenger. Therefore, in the configuration of this Patent Document 2, the airbag side wall portion of the airbag is deployed in a plane before the airbag contacts the occupant, and the application cloth disposed to cover the occupant side wall portion is also deployed. It becomes movable with respect to the passenger side wall. Therefore, in this airbag, the patch is folded along the airbag body so as not to bend up during the deployment process.

  However, the side airbag is deployed close to the passenger, unlike the airbag for the passenger on the passenger seat. Therefore, assuming that the configuration of the airbag for the passenger on the passenger seat is applied to the side airbag, the application cloth folded together with the airbag main body is sandwiched between the airbag main bodies when contacting the passenger The movable state is not reached, and the desired effect is not achieved. That is, it is not easy to apply a passenger-seat occupant airbag provided with a patch on the occupant-facing surface, which is the front side of the airbag in the deployment direction, to a side airbag that is deployed laterally to the occupant.

JP 2002-21113A (FIG. 6) Japanese Patent Laid-Open No. 2003-170795 (FIGS. 2 and 4)

  As in the prior art, there is a demand for a side airbag that can be smoothly inflated and deployed while controlling the force applied to a dummy in a special posture.

  The present invention has been made in view of these points, and provides a side airbag and a side airbag device that can be smoothly inflated and deployed while controlling a force applied to an object that contacts the side airbag in the deployment process. The purpose is to do.

  The side airbag according to claim 1 is provided in a passenger compartment of a vehicle, and from a rear side of the passenger along a side wall portion of the passenger compartment and gas introduced from a folded state and seated in the seat. An airbag body that is inflated and deployed in a deployment direction toward the front side, and a base end portion is attached to the side wall portion side of the airbag body and folded together with the airbag body, and a distal end side is a free end, A guide cloth folded in a shape different from that of the airbag body in a state of covering the front side of the airbag body.

  The side airbag according to claim 2 is the side airbag according to claim 1, wherein a base end portion of the guide cloth is attached to a mounted position set at an intermediate position in a deployment direction of the airbag body. The bag body includes a first folded portion that is folded without sandwiching the guide cloth from an end on the front side to the vicinity of the attached position, and the guide cloth extends from the attached position of the airbag body. It is folded together with the rear-side base end portion.

  The side airbag according to claim 3 is the side airbag according to claim 2, wherein the first folding part is wound around an inner roll whose front end is directed from the passenger compartment side toward the rear side, and is guided. The cloth is wound around the inner roll together with the portion on the back side from the attached position of the airbag body.

  A side airbag device according to a fourth aspect includes the side airbag according to any one of the first to third aspects, and an inflator that supplies gas into the airbag body of the side airbag. A gas supply unit that supplies gas to an intermediate position in the vertical direction of the airbag body is provided, and a guide cloth is provided along an intermediate position in the vertical direction of the airbag body.

  According to the side airbag according to claim 1, when the side airbag is introduced into the folded airbag body, the airbag body is formed between the passenger seated in the seat and the side wall of the passenger compartment. Inflated and deployed in the deployment direction from the back side to the front side of the occupant along the gap, protecting the occupant seated in the seat. Since the base end portion is attached to the side wall portion of the airbag body and covers the front side of the airbag body in the deployment process, the guide cloth is folded in a shape different from that of the airbag body. The free end can be moved independently of the airbag body. Therefore, the guide cloth is in contact with the object on the front side with respect to the object positioned very close to the side wall and the folded airbag body regardless of the folded shape of the airbag body. The side airbag can be smoothly inflated and deployed while controlling the force applied to the object by applying a heading force, thereby effectively protecting the object.

  According to the side airbag of the second aspect, in addition to the effect of the first aspect, the configuration in which the guide cloth is folded in a shape different from that of the airbag main body in a state of covering the front side of the airbag main body in the deployment process can be easily performed. Realized. Since the base end portion of the guide cloth is attached to the attachment position set at the intermediate position in the deployment direction of the airbag body, the amount of cloth required for the guide cloth is larger than the structure attached to the base end portion of the airbag body. It is easy to reduce weight and reduce manufacturing costs.

  According to the side airbag of the third aspect, in addition to the effect of the second aspect, the direction of the force applied to the object can be easily controlled, the side airbag can be easily folded, and the manufacturing cost can be reduced.

  According to the side airbag device of the fourth aspect, in addition to the effect of any one of the first to third aspects, since the guide cloth is disposed at the intermediate position in the vertical direction of the airbag main body facing the gas supply unit, Gas can be reliably received by the guide cloth, and the behavior of the side airbag can be stabilized without shifting the deployment position in the vertical direction.

It is explanatory drawing seen from the upper part of the expansion | deployment process which shows one Embodiment of the side airbag and side airbag apparatus of this invention, (a) is the state of the initial stage of deployment, (b) is the state following (a) , (C) is a state following (b). It is sectional drawing of a side airbag apparatus same as the above. It is a perspective view of a side airbag same as the above. It is explanatory drawing which shows the folding process of a side airbag same as the above, (a) is an initial state, (b) is a state following (a). It is explanatory drawing seen from the top which shows the expansion | deployment state of a side airbag apparatus same as the above.

  Hereinafter, an embodiment of a side airbag and a side airbag device of the present invention will be described with reference to the drawings.

  In FIG. 2, reference numeral 1 denotes a side airbag device. The side airbag device 1 is attached to a seat 4 of a passenger compartment 3 of a vehicle 2 that is an automobile, and a passenger compartment A seated on the seat 4 and a passenger compartment 3 such as a door. The side airbag 10 is inflated and deployed along the side wall portion 6 to restrain the occupant A and prevent the abutment with the side wall portion 6 and protect the seated occupant A. In each figure, the occupant A is indicated by a dummy, and the occupant A shown in FIGS. 2 and 5 is a dummy imitating an adult male. 1 is a dummy imitating a child as an object. In addition, directions such as front and rear, both sides, and up and down are based on the straight traveling direction of the vehicle 2, F is the front as a deployment direction, U in FIG. 3 is upward, and W is the outer side along the width direction. The seat 4 includes a seat portion 4a and a back portion (seat back) 4b erected upward from the rear portion of the seat portion 4a. The back portion 4b is provided so as to be adjustable in angle, and is normally used in an inclined state. Hereinafter, the direction will be described as a state in which the back portion 4b is erected vertically. The vehicle compartment 3 refers to the inner part of a steel plate that forms the outer shell of the vehicle body.

  The side airbag device 1 includes a side airbag 10 including a bag-like airbag body 11 that is inflated and deployed when supplied with gas, an inflator 12 that supplies gas to the airbag body 11, and these side airbags. A fixing device 16 that is an attachment member for fixing the bag 10 and the inflator 12 to the seat 4 and a resin case body (not shown) that is a cover for storing these members are provided on the side of the back portion 4b of the seat 4. It is stored in the storage position 18, and is fixed to a frame (seat frame) 4c of the seat 4. The side airbag device 1 includes a control device (not shown) provided in the vehicle 2, and the inflator 12 is controlled by the control device.

  As shown in FIG. 2, the inflator 12 includes a substantially columnar main body 21 and a gas supply unit (not shown) that protrudes from an upper end that is one end of the main body 21. Further, a connector for starting the inflator 12 connected to the control means is provided at the lower end which is the other end of the main body 21. The gas supply unit is also called a diffuser, and protrudes from one end of the main body 21 into a columnar shape having a smaller diameter than the main body 21, and a plurality of circular holes serving as gas discharge ports are provided on the peripheral surface. Is formed. The gas supply unit supplies gas to an intermediate position in the vertical direction of the airbag body 11, that is, in the height direction. The inflator 12 can take various forms. For example, the inflator 12 is a so-called hybrid type, and when the ignition signal flows through the connector, the propellant filled in the main body 21 is reacted, and the main body 21 The gas stored in the cylinder inside is released, and the gas at a relatively low temperature is injected from the gas supply unit.

  The fixture 16 is also called a retainer, and includes a retainer main body portion 25 formed by bending a sheet metal, and a pair of bolts 26 as attachment means fixed to the retainer main body portion 25. The retainer main body 25 is curved into a substantially cylindrical shape into which the main body 21 of the inflator 12 can be inserted, and the inflator 12 is fixed and held by pressing and crimping from the outside. The bolt 26 is fixed to the retainer main body 25 and protrudes from the back side.

  The airbag body 11 of the side airbag 10 is inflated and deployed in the deployment direction from the rear side of the occupant A to the front side, that is, from the rear side to the front side, as shown in FIGS. Alternatively, a base fabric called a plurality of panels is sewn, and the inside is formed into a bag shape having an inflating portion 30 which is an air chamber into which gas is introduced from the inflator 12. In the present embodiment, the inner base cloth part 31 located on the seat 4 side, that is, the occupant A side in the unfolded state, and the outer base cloth part 32 located on the outer side of the inner base cloth part 31 and located on the side wall part 6 side. And the outer peripheral base fabric portion 33 that connects the outer peripheral portions of the base fabric portions 31 and 32 are joined together by sewing, so that both sides, the upper and lower surfaces, and the front surface are each formed of a single base fabric. The outer shell of the bag is configured. An opening 37 for inserting the inflator 12 and the like is provided at the rear end portion of the outer shell, and the inflator 12 inserted from the opening 37 is disposed on the rear side portion of the inflating portion 30.

  Further, as shown in FIG. 3, the outer shell of the airbag main body 11 is provided with a vent hole 38 as an exhaust port for communicating the inflating portion 30 to the outside. In the present embodiment, the vent hole 38 is formed as a single circular hole that opens forward in the outer peripheral base fabric portion 33 positioned at the middle portion in the vertical direction at the front end portion of the side airbag 10. Yes. In addition, the rear end portion of the side airbag 10 provided with the outer shell opening 37 is a base portion 39 that is folded inward, and the base portion 39 includes a base fabric portion 31, A mounting hole 41 penetrating 32 is formed.

  In addition, as shown in FIG. 2, on the inner side or the outer side of the outer shell, there is a reinforcing cloth 42, which is also called a flameproof cloth, if necessary, and the inflated portion 30 of the side airbag 10, that is, the deployment dimension in both directions of the outer shell. In addition, a partition wall (not shown) that can be flattened with a predetermined width dimension is overlapped and sewn.

  Further, the side airbag 10 includes a guide cloth 44 attached to the airbag body 11. The guide cloth 44 may be called a flap cloth or the like, and is composed of a base cloth made of the same or similar material as the base cloth constituting the airbag body 11, and is a separate base cloth from the airbag body 11. It is comprised by. The guide cloth 44 has a rectangular shape that is rectangular in shape and has a vertical dimension smaller than that of the airbag body 11, and the base end 45 is an intermediate position in the longitudinal direction of the airbag body 11 and an intermediate position in the vertical direction. It is attached by sewing or the like to the attached position 46 set at the position, and the other part is not attached to the airbag body 11, and the tip part is a free end. The front end portion 48 of the guide cloth 44 faces forward and is positioned in front of the front side end portion 49 of the airbag body 11, which is the front end portion of the inner base fabric portion 31 and the outer base fabric portion 32. ing. The guide cloth 44 is disposed so as to cover only the front end portion of the intermediate position of the airbag main body 11 in the vertical direction outside the vehicle. In addition, the attachment position 46, that is, the base end portion 45 of the guide cloth 44 is attached to the airbag main body 11 at a position separated from the base 39 and the end portion 49 of the airbag main body 11 by a predetermined dimension. .

  Next, an assembly process of the side airbag device 1 will be described.

  First, the inflator 12 is attached to the fixture 16 to form an inflator unit. Then, the inflator unit is inserted into the inflatable part 30 from the opening 37 at the rear end of the sewn side airbag 10, and the base 39 of the side airbag 10 is folded and the bolt 26 of the fixture 16 is attached to the mounting hole 41. Pull out to the outside and fix with nuts not shown. In this state, the gas supply part of the inflator 12 is disposed at the center position of the intermediate position in the vertical direction of the airbag body 11.

  Next, the side airbag 10 combined with the inflator 12 and the fixture 16 is folded into a predetermined shape. As shown in FIG. 4 (a), this folded shape, that is, the folding method, is as follows. First, the airbag body 11 is formed in a flat plate shape so that the inner base fabric portion 31 and the outer base fabric portion 32 are in close contact with each other. A guide cloth 44 is placed along the bag body 11.

  Next, the airbag body 11 is wound around the inner roll so that the end portion 49 is directed rearward from the passenger compartment 3 side, and the first folding portion 51 is formed. This step is performed, for example, by sandwiching the end 49 of the airbag body 11 with a pair of elongated metal plate jigs called sabers and rotating the sabers. At this time, as shown in FIG. 4 (b), the guide cloth 44 does not follow the airbag body 11 until the airbag body 11 is wound up to the attachment position 46, that is, the guide cloth 44 is not attached to the airbag. It is not caught in the first folding part 51 of the main body 11 and is not clamped.

  Next, the airbag main body 11 is further folded by the inner roll together with the guide cloth 44 to obtain the state shown in FIG. That is, the guide cloth 44 is folded in a state different from that of the airbag body 11, and at least the distal end side of the guide cloth 44 is not sandwiched between the distal end side portions of the airbag body 11.

  The side airbag device 1, the inflator 12, and the fixture 16 are housed in a case as needed, or the folded shape is held with a breakable tape to constitute the side airbag device 1. The side airbag device 1 is stored in the storage position 18 on the side of the seat 4 and is fixed to the seat 4 of the automobile by fixing the bolts 26 of the fixture 16 to the frame 4c of the seat 4 or the like. That is, the side airbag 10 and the inflator 12 are attached to the vehicle body via the fixture 16. Further, the connector of the inflator 12 of the side airbag device 1 is connected to a control device provided on the vehicle 2 side via a harness (not shown). The control device includes a CPU and is connected to one or more sensors, and activates the inflator 12 at a predetermined timing according to the state of the occupant and the situation of the collision obtained by these sensors.

  Next, a deployment operation of the side airbag device 1 will be described.

  When the vehicle 2 receives an impact such as a side collision, the control means activates the inflator 12 in a state suitable for occupant protection and injects gas from the gas supply unit. Then, this gas is directly supplied to the inflating portion 30, and the side airbag 10 opens the cover, protrudes from the seat 4, and inflates and expands forward. More specifically, the gas supplied from the inflator 12 rapidly inflates and deploys the inflatable portion 30 of the airbag body 11 wound by the inner roll so as to roll along the side wall portion 6 from the base 39 side. When the airbag body 11 is deployed to the attached position 46 at the initial stage of deployment, the guide cloth 44 is movable independently of the airbag body 11 as shown in FIG. When the gas is further supplied, the distal end side of the airbag body 11 is inflated and deployed so as to roll along the side wall portion 6, and is expanded to the front end portion 49.

  Therefore, for example, in the case of an average adult male occupant A who is seated at a normal position of the seat 4 and wears a seat belt, as shown in FIG. The airbag main body 11 is deployed with a predetermined reaction force between the side wall portion 6 of the vehicle 2 and the occupant A is protected. Further, the gas is exhausted from the vent hole 38 after the side airbag 10 is fully deployed or when the occupant A is in contact with the side airbag 10.

  Here, when the occupant B is present at the improper boarding position, for example, as shown by a dummy in FIG. 1, the occupant B as a child is positioned so as to lie down on the seat 4 a of the seat 4. Suppose that the head is close to the side wall 6 and the back is close to the back 4b of the seat 4. In this state, the side airbag 10 abuts on the back of the occupant B at the initial stage of deployment. At this time, as shown in FIG. 1 (a), the guide cloth 44 comes into contact with the occupant B. Since the guide cloth 44 is already movable independently from the airbag body 11, the guide cloth 44 is guided. The cloth 44 slides relative to the airbag body 11 and presses the head toward the front without transmitting the force in the direction of rotation to the occupant B. Then, as shown in FIGS. 1 (b) to 1 (c), the head is naturally tilted so that it nods forward or bows, and the influence on the occupant B is suppressed, while the head and the side wall portion 6 are not affected. A space is formed smoothly. The airbag body 11 is smoothly inflated and deployed in this space, restrains the position of the occupant B, and can suppress and protect the occupant B from contacting the side wall portion 6.

  As described above, according to the present embodiment, by introducing gas into the airbag body 11 in a folded state, the airbag body 11 is formed between the occupant A seated in the seat 4 and the side wall portion 6 of the passenger compartment 3. The occupant A seating on the seat 4 can be protected by inflating and deploying in the deployment direction from the back side to the front side of the occupant A along the gap.

  Furthermore, a guide cloth 44 is attached to the airbag body 11, and the guide cloth 44 is attached in a state where the base end portion 45 is attached to the side wall portion 6 side of the airbag body 11 and covers the front side of the airbag body 11 in the deployment process. Since the airbag body 11 is folded into a different shape, the leading end side of the guide cloth 44 can be moved independently of the airbag body 11 to show different deployment behavior at the initial stage of deployment. The non-regular occupant B located very close to the airbag main body 11 also comes in contact with the occupant B with the guide cloth 44 regardless of the folded shape of the airbag main body 11 and heads forward toward the occupant B. The side airbag 1 can be inflated and deployed smoothly while applying force and controlling the direction of the force applied to the occupant B, thereby effectively protecting the occupant B.

  Further, the base end portion 45 of the guide cloth 44 is attached to a mounting position 46 set at an intermediate position in the deploying direction of the airbag main body 11, and the airbag main body 11 is attached to the mounting position from the front end 49. A first folding part 51 is formed which is folded without sandwiching the guide cloth 44 up to the vicinity of 46, and the guide cloth 44 is folded together with the proximal end portion on the back side from the attached position 46 of the airbag body 11. Therefore, it is possible to easily realize a configuration in which the guide cloth 44 is folded into a shape different from that of the airbag body 11 while covering the front side of the airbag body 11 in the deployment process.

  Further, the first folding part 51 of the airbag main body 11 is wound around an inner roll having an end 49 on the front side from the passenger compartment 3 side toward the rear side, and the guide cloth 44 is covered with the covering of the airbag main body 11. By winding around the inner roll together with the rear portion of the mounting position 46, the direction of the force applied to the passenger B at the non-regular position can be easily controlled, and the side airbag 10 can be easily folded. And the manufacturing cost of the airbag apparatus 1 can be reduced.

  In addition, since the base end portion 45 of the guide cloth 44 is attached to the airbag body 11 at a position separated from the front end portion 49 of the airbag body 11 by a predetermined dimension, the deployment behavior of the end portion 49 of the airbag body 11 is And the unfolding behavior of the front end portion 48 of the guide cloth 44 can be reliably made different. It should be noted that the base end portion 45 of the guide cloth 44, that is, the dimension at which the attached position 46 is separated from the end portion 49 of the airbag body 11, is, for example, 30 mm or more, so that the deployment behavior of the end portion 49 of the airbag body 11 is And the deployment behavior of the distal end portion 48 of the guide cloth 44 can be ensured, and the side airbag 10 can be easily wound by the jig.

  Further, since the base end portion 45 of the guide cloth 44 is attached to the outer base cloth portion 32 on the side wall portion 6 side of the airbag body 11, the guide cloth 44 is finally attached to the side wall portion when the airbag body 11 is inflated and deployed. It is possible to suppress the influence of the guide cloth 44 on the occupants A and B by guiding to the sixth side.

  Further, since the portion on the base 39 side of the airbag main body 11 is wound by the inner roll, it is quickly inflated and deployed so as to roll along the side wall portion 6, and in the initial stage of deployment, the front side of the first folding portion 51 Thus, the guide cloth 44 can be disposed so as to cover the vehicle compartment 3 side, and the guide cloth 44 can be reliably brought into contact with the passenger B.

  Furthermore, since the first folding part 51, which is a part of the airbag body 11 on the front end 49 side, is wound by the inner roll along the side wall part 6 of the passenger compartment 3, From the state in which the guide cloth 44 is arranged so as to cover the vehicle compartment 3 side from the front side of the folding part 51, the guide cloth 44 is brought into contact with the occupant B according to the development of the first folding part 51, and the desired direction Thus, it is possible to easily realize a configuration in which it is smoothly deployed while being pressed forward.

  In this way, since the passenger B in a special non-regular position can be protected smoothly, it is easy to reduce weight and cost without installing a seat posture detection sensor (OPDS) that detects the special non-regular position. In addition, the side airbag 10 can be inflated and deployed to protect the occupant B.

  Further, since the base end portion 45 of the guide cloth 44 is attached to the attachment position 46 set at the intermediate position in the deployment direction of the airbag body 11, it is attached to the base end portion of the airbag body 11 and the front end portion Compared to the configuration extending to 49, the amount of cloth required for the guide cloth 44 is reduced, and it is easy to reduce the weight and the manufacturing cost.

  The inflator 12 that supplies gas into the airbag body 11 of the side airbag 10 includes a gas supply unit that supplies gas to an intermediate position in the vertical direction of the airbag body 11, and the guide cloth 44 includes a gas supply unit. Because it is arranged along the middle position in the vertical direction of the airbag body 11 so as to face the side, the gas can be reliably received by the guide cloth 44, and the behavior of the side airbag 10 can be stabilized without shifting the deployment position in the vertical direction. it can. Further, the interference between the guide cloth 44 and the structure of an armrest or the like provided in the lower portion of the door constituting the side wall portion 6 so as to protrude toward the vehicle compartment 3 side can be suppressed, and the guide cloth 44 can be deployed smoothly.

  Further, in the present embodiment, the outer peripheral base fabric portion 33 is provided in the outer peripheral portion of the outer shell of the inflatable portion 30, and the stroke is ensured in almost the entire inflatable portion 30 that is the protective region of the side airbag 10. The contact of the occupant A with the side wall portion 6 can be suppressed and protected.

  In the above embodiment, the guide cloth 44 has a rectangular belt shape and is attached to the airbag body 11 by sewing, but is not limited to this configuration. For example, the guide cloth 44 may have a shape other than a square such as a substantially L-shaped plane according to the shape of a door or the like that constitutes the side wall portion 6. Further, the guide cloth 44 is arranged along only the middle position in the vertical direction of the airbag body 11, and is provided along the upper side from the middle position, the lower side from the middle position, or the entire vertical direction of the airbag body 11. You can also. The guide cloth 44 can also be attached to the airbag body 11 by adhesion or the like.

  Further, the folding shape of the first folding part 51 of the airbag body 11 is not limited to the inner roll, and for example, it can be folded around an outer roll wound in the opposite direction, or can be folded into a bellows shape. .

  In the airbag body 11, the inner base fabric portion 31 and the outer base fabric portion 32 are connected by the outer peripheral base fabric portion 33. However, the configuration is not limited to this configuration. For example, the inner base fabric portion 31 and the outer base fabric portion 32 are connected. Can be directly connected to each other.

  In addition, the inflator 12 may adopt a so-called pyro type configuration in which gas is supplied by combustion in addition to the hybrid type. In addition, the fixing device 16 that fixes the inflator 12 can take various configurations such as a configuration in which the inflator 12 is sandwiched and held.

  INDUSTRIAL APPLICABILITY The present invention is used as a side airbag device that is housed in a side portion of an automobile seat and protects the occupant by deploying an airbag between the occupant and the door.

DESCRIPTION OF SYMBOLS 1 Side airbag apparatus 2 Vehicle 3 Car compartment 4 Seat 6 Side wall part
10 Side airbag
11 Airbag body
12 Inflator
44 Information cloth
45 Base end
46 Mounted position
49 Edge
51 1st Folding Part A Crew B Crew that is the object F Front as deployment direction

Claims (4)

It is provided in a vehicle cabin and is inflated and deployed in a deployment direction from the back side of the passenger toward the front side along the space between the passenger seated in the seat where gas is introduced from the folded state and the side wall of the cabin. An airbag body,
The airbag body is attached to the side wall portion side of the airbag body and folded together with the airbag body, the distal end side is a free end, and covers the front side of the airbag body during deployment. A side airbag comprising: a guide cloth folded into a different shape. The base end portion of the guide cloth is attached to a mounted position set at an intermediate position in the deployment direction of the airbag body,
The airbag main body includes a first folding part that is folded without sandwiching the guide cloth from an end on the front side to the vicinity of the attached position,
2. The side airbag according to claim 1, wherein the guide cloth is folded together with a portion on a rear end side from the attached position of the airbag body. The first folding part is wound around an inner roll whose front end faces from the passenger compartment side to the rear side,
The side airbag according to claim 2, wherein the guide cloth is wound around the inner roll together with a portion on the back side from the attachment position of the airbag body. A side airbag according to any one of claims 1 to 3, and an inflator for supplying gas into the airbag body of the side airbag,
The inflator includes a gas supply unit that supplies gas to an intermediate position in the vertical direction of the airbag body,
The side airbag device according to claim 1, wherein the guide cloth is provided along an intermediate position in the vertical direction of the airbag body.

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