JP2008044594A - Airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airbag device capable of properly protect an occupant at the time of asymmetric collision. <P>SOLUTION: This airbag device M1 comprises an airbag 18 folded in the storage portion 6 for storage and a restraining means RM1. The restraining means RM1 comprises tethers 44L, 44R for restraining the separated distance of the airbag 18 from the storage portion 6 of an occupant protective part 24 at the completion of the inflation and locking means 50L, 50R for stopping the tethers 44L, 44R on the storage portion 6 side. When the asymmetrical collision of a vehicle against an article to be collided so positioned as to be displaced to one of the left and right sides of the forward center is detected, the locking of the tether 44R disposed on the side of the article to be collided to the locking means 50R is released. The restraining surface 25 of the occupant protective part 24 at the completion of the inflation is disposed aslant relative to the left and right directions of the vehicle so that the separated distance thereof from the storage part 6 on the side of the article to be collided is larger than the separated distance thereof from the storage portion 6 on the side separated from the article to be collided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an airbag apparatus provided with a bag-like airbag that is folded and stored in a storage part, inflated with an inflating gas therein, and protrudes and expands from the storage part.

2. Description of the Related Art Conventionally, as an airbag device, a configuration in which an airbag is folded and stored in a storage portion formed in an instrument panel disposed in front of a passenger seat, and an inflating gas is allowed to flow inside, and the airbag device is deployed and inflated. The airbag has a configuration in which the shape when the inflation is completed is asymmetrical on the left and right (see, for example, Patent Document 1).
JP 2006-88856 A

  However, in the conventional airbag device, the shape when the airbag is completely inflated is asymmetrical on the left and right in accordance with the shape of the members constituting the vehicle interior such as the front windshield and the instrument panel. No consideration is given to the asymmetrical collision of the vehicle with the collision object that is biased to the left or right of the center in the forward direction. In such an asymmetrical collision, there is room for improvement in that the passenger is accurately protected. was there.

  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 an occupant during an asymmetrical collision.

  The asymmetrical collision in the present invention means that the collision object located on the left and right sides of the center of the vehicle collides with the vehicle, and the vehicle moves in a direction away from the collision object. It is a collision (for example, oblique projection) that changes as it turns.

The airbag device according to the present invention is folded and stored in a storage part, and is inflated into the bag by inflating gas into the storage part and projecting from the storage part. An airbag having an occupant protection portion provided with a restraint surface that is disposed and capable of restraining an occupant, and a vehicle body side portion that is disposed on the storage portion side and attached to the storage portion;
A regulating means capable of regulating the shape of the airbag at the completion of inflation according to the vehicle collision mode;
An airbag device comprising:
Regulatory means
Inside the airbag, the airbag is disposed at two locations that are substantially symmetrical with respect to the mounting portion of the airbag on the side of the vehicle body when the inflation is completed, and the storage portion side and the occupant protection portion respectively. And a tether configured to be able to regulate the separation distance from the storage portion of the occupant protection part when the inflation is completed,
A locking means for locking each tether to the storage site side and controlling the operation by a control device that determines the collision mode of the vehicle, and releasing the locking of the tether to the storage site side when operating,
And is configured to include
When the control device detects an asymmetrical collision of the vehicle with a collided object that is biased to the left or right of the center in front of the vehicle, the locking between the tether disposed on the collided object side and the locking means The restraint surface when the airbag is completely inflated is configured such that the separation distance from the storage part on the collision object side is larger than the separation distance from the storage part on the side away from the collision object. As described above, the vehicle is inclined with respect to the left-right direction of the vehicle.

  In the airbag device of the present invention, at the time of the asymmetrical collision of the vehicle, the airbag completes the expansion in a state where the locking between the tether disposed on the collision object side and the locking means is released. That is, in the airbag device of the present invention, in the case of an asymmetrical collision of the vehicle, the airbag is completely inflated while the separation distance from the storage portion of the occupant protection portion on the side away from the collision object is regulated by the tether. Will be allowed to. In other words, the restraint surface of the occupant protection part in the airbag is set so that the separation distance from the storage part on the side of the impacted object is larger than the separation distance from the storage part on the side away from the impacted object. The airbag is disposed so as to be inclined with respect to the direction, and the airbag thickens the part on the collision object side to complete the inflation. Therefore, in the airbag device of the present invention, when the vehicle after the asymmetrical collision moves in a state where the traveling direction is changed to be directed away from the collision object, the occupant faces the collision object side. Even if it moves greatly, the part on the side of the impacted object of the airbag that is the moving side is inflated thickly, so that the occupant is prevented from slipping through the edge of the airbag, and the part inflated Then, the occupant can be restrained accurately by the restraining surface of the airbag including the thickly completed portion. As a result, even if the occupant moves to the left and right pillar portions or the center of the vehicle, the occupant can be accurately restrained by the airbag inflated thickly on the pillar portion or the center of the vehicle.

  Therefore, in the airbag device of the present invention, the occupant can be protected accurately at the time of the asymmetrical collision.

  Further, in the airbag device of the present invention, the control device is configured to be able to determine the preferred inflation mode of the airbag according to the seated occupant, and to the collision object located at the approximate center of the left and right in front of the vehicle When detecting a symmetrical collision of the vehicle, it is possible to release all the locking between each tether and each locking means according to the seated occupant, or to lock all the locking between each tether and the locking means. It is preferable that the constraining surface is arranged so as to be substantially parallel to the left-right direction of the vehicle so that it can be maintained.

  In the airbag device having the above-described configuration, the distance from the storage portion of the airbag at the completion of the inflation to the occupant protection unit can be changed according to the seated occupant. For example, the control device can be a small occupant or an airbag device. When the seating of an occupant sitting close to the vehicle is detected, if the airbag is deployed and inflated with each tether maintaining all locking with the locking means, the airbag is stored. Inflation is completed in a state where the separation distance from the part to the occupant protection part is set small, and protection is performed without pressing the occupant sitting close to the small occupant or the airbag device more than necessary. can do. Conversely, when the control device detects the seating of a large passenger or an occupant sitting away from the airbag device, each tether is released from all locking with the locking means. If the airbag is deployed and inflated, the airbag will be completely inflated in a state where the separation distance from the storage part to the occupant protection portion is set large, and substantially the entire area along the left-right direction of the vehicle is evenly distributed. With the airbag inflated to a large thickness, large occupants with high kinetic energy and occupants sitting away from the airbag device can be received with sufficient cushioning properties. Further, in the airbag device having the above-described configuration, the restraint surface of the airbag that has been completely inflated at the time of a symmetric collision (frontal collision) between a collision object and a vehicle positioned substantially in the center on the left and right in front of the vehicle Therefore, the occupant can be restrained accurately by this restraint surface.

Moreover, as an airbag device, the regulating means is
Inside the airbag, the airbag is disposed at a position on the inner side of the vehicle in the left-right direction from the attachment portion to the storage portion of the vehicle body side portion of the airbag when inflation is completed, and is connected to the storage portion side and the occupant protection portion. A tether configured to be able to regulate the separation distance from the storage portion of the occupant protection portion when the inflation is completed;
A locking means for locking the tether to the storage site side and controlling the operation by a control device that determines the collision mode of the vehicle, and releasing the locking of the tether to the storage site side during operation,
And comprising
Control device,
When detecting an asymmetrical collision of the vehicle with a colliding object that is located on the front side of the vehicle and deviates from the center to one of the left and right sides and that is located in the vehicle exterior direction with respect to the storage part, the relationship between the tether and the locking means is detected. The restraint surface at the time of completion of inflation of the airbag is maintained, and the separation distance from the storage part on the outside of the vehicle with respect to the storage part is larger than the separation distance from the storage part on the inside of the vehicle with respect to the storage part. Inclined with respect to the left and right direction of the vehicle so as to increase,
When detecting the symmetrical collision of the vehicle with the colliding object located at the approximate center of the left and right in front of the vehicle, the locking of the tether and the locking means is released, and the restraint surface is And may be used so that they are arranged substantially in parallel.

  In the airbag apparatus having such a configuration, the airbag is located at the time of an asymmetrical collision of the vehicle with a colliding object that is located on the front side of the vehicle and deviated from the center to the left and right and located in the vehicle outer direction with reference to the storage portion. Expansion is completed in a state where the tether maintains the locking with the locking means. That is, in the airbag device having the above-described configuration, at the time of the oblique collision, the separation distance from the storage portion of the portion located on the vehicle inner side (the side away from the collision object) in the occupant protection portion is regulated by the tether. Will complete the expansion. In other words, the restraining surface of the airbag makes the separation distance from the storage part on the vehicle outer side, which is the collision object side, larger than the separation distance from the storage part on the vehicle inner side, which is the side away from the collision object. Thus, the airbag is disposed so as to be inclined with respect to the traveling direction of the vehicle, and the airbag is thickened at a portion located on the vehicle outer side on the collision object side to complete the inflation. . Therefore, when the vehicle after the asymmetrical collision moves in a state where the traveling direction is changed so as to be directed to the side away from the colliding object (the vehicle inner side with reference to the storage part), the occupant becomes the vehicle outer side. Even if the vehicle moves greatly toward the left and right pillars, the outer side of the airbag on the side of the pillars is inflated thickly, so the occupant slips through the outer edge of the airbag. Is restrained, stopped at the inflated portion, and the occupant can be restrained accurately by the restraining surface of the airbag including the portion where the thickening is completed. Further, in the airbag apparatus having the above-described configuration, the tether releases the locking with the locking means at the time of a symmetric collision of the vehicle with a colliding object located at the approximate center of the left and right in front of the vehicle (front collision). In this state, since the airbag completes the inflation, the separation distance of the occupant protection portion from the storage site can be increased, and the occupant can be protected by the airbag that has been completely inflated. In the frontal collision of the vehicle, the restraint surface of the airbag that has been inflated is arranged facing the occupant so as to be substantially parallel to the left-right direction of the vehicle. The occupant can be restrained accurately.

  Therefore, even with the airbag device having the above-described configuration, the occupant can be accurately protected during an asymmetrical collision. Further, with the airbag device having the above-described configuration, the occupant can be accurately protected even during a symmetric collision (frontal collision). be able to.

  Furthermore, in the airbag device having the above-described configuration, the occupant protection portion is disposed so as to be substantially along the vertical direction when the airbag is completely inflated, and a recess configured to be recessed from the surrounding portion is disposed. A configuration is preferable.

  In the airbag device configured as described above, the restraint surface of the occupant protection portion when the inflation is completed is uneven along the left and right to increase frictional resistance and hooking resistance. The head can be prevented from moving to the left and right with respect to the restraint surface, and the occupant protection unit can accurately protect the occupant's head.

  Furthermore, if this recess is configured to be arranged in parallel at two or more locations along the left-right direction, it is possible to further prevent left-right displacement with respect to the restraint surface of the head of the occupant during restraint of the occupant, preferable.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the embodiment, an airbag device for a passenger seat arranged in front of the passenger seat will be described as an example, but the airbag device to which the present invention can be applied is not limited to this, for example, for a steering wheel The present invention is also applicable to the airbag apparatus.

  As shown in FIG. 1, the airbag device M1 for the passenger seat according to the first embodiment is a top mount type disposed inside the upper surface 2 side of an instrument panel (hereinafter referred to as “instrument panel”) 1. Yes. As shown in FIGS. 1 to 3, the airbag device M <b> 1 is a folded airbag 18, an inflator 10 that supplies inflation gas to the airbag 18, and a storage part that stores and holds the airbag 18 and the inflator 10. Case 6, a retainer 14 for attaching the airbag 18 to the case 6, an airbag cover 12 covering the folded airbag 18, and a tether 44 as a regulating means RM1 that regulates the inflation completion shape of the airbag 18. (44L, 44R) and a locking member (locking means) 50 (50L, 50R). The operation of the inflator 10 and the locking member 50 is controlled by the control device 54.

  Note that the vertical, front-rear, and left-right directions in this specification are the same as the vertical, front-rear, left-right directions of the vehicle when the vehicle is traveling straight, unless otherwise specified.

  As shown in FIG. 1, the control device 54 includes a position detection sensor 55 as an occupant detection sensor that can detect the physique of the occupant MP seated on the seat SE, and a weight as an occupant detection sensor that can detect the weight of the occupant MP. The sensor 56 is electrically connected to a collision detection sensor 57 (57L, 57R, 57C) and the like that can detect the acceleration and acceleration directions of the vehicle, the position of an object located in front of the vehicle, and the like. In the case of the embodiment, the collision detection sensors 57 (57L, 57R, 57C) are disposed on both the left and right ends near the front surface of the vehicle V and near the center, and from the collision detection sensors 57 (57L, 57R, 57C). The control device 54 that inputs a signal is caused by a frontal collision when the vehicle V is traveling straight, or by an asymmetrical collision (oblique collision) with a collided object that is offset to the right side from the center even when the vehicle V is traveling straight. Change the direction of travel to the left side away from the impacted object, or move the direction of travel to the right side away from the impacted object due to an asymmetrical collision (oblique projection) with the impacted object placed to the left of the center. It is configured so that it can be determined that the orientation will change. And the control apparatus 54 of embodiment inputs the electrical signal from these position detection sensors 55, the weight sensor 56, the collision detection sensor 57 grade | etc., And operates the inflator 10, and controls the action | operation of the locking member 50. To do.

  The airbag cover 12 is formed integrally with the instrument panel 1 made of synthetic resin, and is configured such that when the airbag 18 is deployed and inflated, the front and rear door portions 12a and 12b are pushed by the airbag 18 and opened. ing. A connecting wall portion 12 c that is connected to the case 6 is formed around the door portions 12 a and 12 b of the airbag cover 12.

  The inflator 10 includes a substantially cylindrical main body portion 10 a having a plurality of gas discharge ports 10 b and a flange portion 10 c for attaching the inflator 10 to the case 6.

  The case 6 as a storage part is formed in a substantially rectangular parallelepiped shape made of a sheet metal having a rectangular opening on the upper end side, a substantially rectangular plate-shaped bottom wall portion 7 attached by inserting the inflator 10 from below, and a bottom wall And a peripheral wall portion 8 that extends upward from the outer peripheral edge of the portion 7 and locks the connecting wall portion 12c of the airbag cover 12. In the case 6, a bracket (not shown) connected to the body side of the vehicle V is disposed at the bottom wall portion 7. Further, loop portions of the connecting member 45 formed on the tip 44c side of the tethers 44L and 44R constituting the restricting means RM1 are located on the left and right sides of the bottom wall 7 near the insertion hole 7a for inserting the inflator 10. A through hole 7b through which 45a can be inserted is formed. Further, as shown in FIG. 3, on the edge side of the bottom surface of the bottom wall 7, which is the periphery of the through-hole 7 b, which faces the actuator 52 of the locking member 50, which will be described later, constituting the regulating means RM <b> 1. A support base 7c is provided that supports the tip of the locking pin 51a of the locking member 50 and prevents the loop portion 45a from coming off from the locking pin 51a during locking.

  Note that the airbag 18 and the inflator 10 are configured such that the plurality of bolts 14 a of the annular retainer 14 disposed in the airbag 18 are the peripheral edge 20 of the gas inlet 21 in the airbag 18 and the bottom wall portion 7 of the case 6. And, it is attached to the case 6 by passing through the flange portion 10 c of the inflator 10 and being fastened with a nut 15.

  As shown in FIGS. 5 to 11, the airbag 18 is formed into a substantially quadrangular pyramid shape with the front end as the top when the inflation is completed, and is disposed on the upper and lower sides along the substantially left-right direction. Part 18a and lower side wall part 18b, left side wall part 18c and right side wall part 18d arranged substantially along the front-rear direction on both the left and right sides, and upper side wall part 18a and lower side wall part 18b on the passenger side And a rear side wall portion 18e disposed substantially along the left-right direction. The airbag 18 according to the embodiment includes an occupant protection unit 24 disposed on the rear side which is the occupant side when the inflation is completed, and the instrument panel 1 and the windshield 4 on the front side of the occupant protection unit 24 when the inflation is completed. Vehicle body side portion 19 that is disposed between the front end side of the airbag 18 and that is closed, and is the front end side of the lower side wall portion 18b of the airbag 18 when the inflation is completed. A gas inlet 21 that is circularly opened to allow the inflation gas to flow in and is attached to the case 6 at a portion near the center in the left-right direction of the portion 19 is provided. A plurality of mounting holes 22 for mounting the peripheral edge 20 of the gas inlet 21 to the bottom wall portion 7 of the case 6 by inserting the bolts 14 a of the retainer 14 are formed in the peripheral edge 20 of the gas inlet 21. . In other words, the airbag 18 uses the peripheral edge 20 of the gas inlet 21 as an attachment part attached to the case 6. Moreover, the loop part 45a of the connection member 45 arrange | positioned at the front-end | tip 44c side of each tether 44L and 44R can be penetrated in the site | part which is the peripheral edge 20 of the gas inflow port 21, and the both right and left sides of the gas inflow port 21. A through hole 23 is formed. Furthermore, a vent hole 29 that is opened in a circular shape capable of exhausting excess inflation gas is disposed in the left side wall portion 18c and the right side wall portion 18d of the airbag 18.

  The occupant protection part 24 is configured to include a restraining surface 25 that is disposed on the rear end side that becomes the occupant side when inflation is completed and that can restrain the occupant. In the case of the embodiment, the restraint surface 25 is configured from a portion on the outer surface side of the rear side wall portion 18e. Further, the occupant protection unit 24 is arranged side by side along the left-right direction when the airbag 18 is completely inflated in a state where the restriction by the restriction means RM1 is released, and is disposed so as to extend in the up-down direction. The projections 26L and 26R are formed so as to protrude slightly rearward, and the recesses 27 are formed so as to be slightly recessed forward between the projections 26L and 26R. . The protrusions 26L, 26R and the recess 27 are formed over the entire upper and lower regions of the restraint surface 25 (occupant protection part 24). In the airbag 18 when the inflation is completed in a state where the restriction by the restriction means RM1 is released. In this case, the amount of unevenness is reduced, and the constraining surface 25 is provided with slight unevenness along the left-right direction.

  The airbag 18 of the embodiment is configured by joining the peripheral edges of a base fabric of a predetermined shape, and as shown in FIG. 12, the front part of the left side wall part 18c, the right side wall part 18d, and the lower side wall part 18b. The first base cloth 30 constituting the side part 18ba and the second base cloth 35 constituting the rear side part 18bb of the upper side wall part 18a, the rear side wall part 18e and the lower side wall part 18b are constituted by two base cloths. Has been.

  As shown in FIG. 12, the first base fabric 30 has a substantially rectangular lower portion 31 that forms the peripheral edge 20 of the gas inlet 21 in the vehicle body side portion 19 as a left-right symmetrical shape that approximates the shape of an open butterfly. The left-side portion 32 and the right-side portion 33 each having a substantially square plate shape disposed so as to extend from the lower portion 31 to the left and right sides. The lower portion 31 constitutes a front portion 18ba that is in the vicinity of the gas inlet 21 in the lower wall portion 18b of the airbag 18 that has been inflated. The left side portion 32 and the right side portion 33 mainly constitute the left side wall portion 18c and the right side wall portion 18d of the airbag 18 that has been completely inflated, respectively.

  The second base fabric 35 has a substantially strip shape in which the parts constituting the rear side part 18bb of the upper side wall part 18a, the rear side wall part 18e, and the lower side wall part 18b are arranged in series, and are arranged in the longitudinal direction. It is configured by curving both edges on the short side direction (left and right direction when mounted on the vehicle) side so that the center side (front and rear direction when mounted on the vehicle) is wide. In the case of the embodiment, the second base fabric 35 has a flat and substantially rhombus shape so that the part side constituting the upper side wall part 18a is wider than the part side constituting the lower side wall part 18b. In the vicinity of the center of the second base fabric 35, a cutout portion 36 arranged along the longitudinal direction is formed. The notch 36 is configured so that the shape of the periphery is approximated to the outer shape of the second base cloth 35, and the opening is formed into a flat, substantially rhombic shape. That is, the notch 36 has a line-symmetric shape with the center line on the short direction side of the second base fabric 35 as the center, and the intermediate portion protrudes toward the edge side of the second base fabric 35, respectively. The two peripheral portions 36a and 36b configured to be bent at the opposite ends are combined. Further, the cutout portion 36 has a wide portion 36c having the largest opening width dimension slightly on the lower edge portion 35e side (when the vehicle is mounted) than the wide portion 35a configured to be the widest in the second base fabric 35. It is formed so as to be positioned on the lower side.

  In the airbag 18 of the embodiment, the protrusions 26L and 26R and the recess 27 in the occupant protection part 24 are formed on the left side portion 32 and the right side portion 33 of the first base cloth 30, and the peripheral edges of the second base cloth 35, or the second base cloth 35. The peripheral parts 36a and 36b of the notch 36 in the base fabric 35 are overlapped and stitched together. In the case of the embodiment, a stitched portion 41L configured by sewing the peripheral edge portion 32a of the left side portion 32 of the first base fabric 30 and the left edge portion 35b of the second base fabric 35, and the right side of the first base fabric 30 As shown in FIGS. 5, 6, and 9, the sewn portions 41 </ b> R configured by sewing the peripheral edge portion 33 a of the portion 33 and the right edge portion 35 c of the second base fabric 35 are respectively protruding portions 26 </ b> L and 26 </ b> R. The top part 26a of this is comprised. The stitched portion 42 formed by sewing the peripheral edge portions 36 a and 36 b of the notch 36 in the second base fabric 35 constitutes the bottom 27 a of the recess 27.

  The airbag 18 is provided with two reinforcing cloths 38 and 39 that reinforce the peripheral edge 20 of the gas inlet 21. The reinforcing cloth 38 is configured to cover substantially the entire inner peripheral surface side of the lower portion 31 of the first base cloth 30, and the reinforcing cloth 39 has a substantially rectangular shape capable of reinforcing the peripheral edge 20 of the gas inlet 21. It is said that.

  The tethers 44L and 44R that constitute the restricting means RM1 are disposed in two positions that are symmetrical with respect to the gas inlet 21 inside the airbag 18. Each of the tethers 44L and 44R is formed in a strip shape so that the width direction is substantially along the vertical direction. Specifically, each of the tethers 44L and 44R has the base portion 44a side connected to the vicinity of the bottom portion 27a of the concave portion 27, and the intermediate portion 44b is connected to the vicinity of the top portion 26a of the projecting portions 26L and 26R. The part between 44a and the intermediate part 44b is arranged so as to be substantially along the restraint surface 25, the part from the intermediate part 44b to the tip 44c is arranged so as to be substantially along the front-rear direction, and the tip 44c side is arranged in the case 6 is configured to be locked to a locking member 50 (50L, 50R) disposed on the bottom wall 7 side. In the case of the embodiment, each tether 44L, 44R has the base portion 44a and the intermediate portion 44b at the portions of the suture portions 41L, 41R, 42 at the time of the sewing operation of the first base fabric 30 and the second base fabric 35. They are sewn together and sewn to the vicinity of the bottom 27a of the recess 27 and the vicinity of the top 26a of each protrusion 26L, 26R. Further, in the case of the embodiment, each of the tethers 44L and 44R has a band shape with a substantially constant width dimension from the base portion 44a to the intermediate portion 44b, and a tapered shape that decreases the width dimension from the intermediate portion 44b to the tip 44c. It is configured. A connecting member 45 connected to the locking member 50 (50L, 50R) is disposed on the tip 44c side of each tether 44L, 44R. In the case of the embodiment, the connecting member 45 is formed from two half-circular annular loop portions 45a fixed to the tip 44c side of each tether 44L, 44R.

  Each tether 44L, 44R has a length dimension from the intermediate portion 44b to the tip 44c, and gas is supplied from the top portion 26a of each protrusion 26L, 26R in the airbag 18 inflated without the tethers 44L, 44R being disposed therein. It is set to be longer than the separation distance to the peripheral edge 20 portion of the inflow port 21. Specifically, the length dimension from the intermediate portion 44b to the tip 44c in each tether 44L, 44R is, for example, as shown in FIG. 13, the tether 44L disposed on the left side engages the connecting member 45 with the locking member 50L. When the airbag 18 is deployed and inflated in a state in which the tether 44R disposed on the right side is unlocked from the locking member 50R of the connecting member 45, the restraint surface 25 becomes the case 6 of the right side portion 25b. The distance L1 from the vehicle is set larger than the distance L2 from the case 6 of the left side portion 25a and is set so as to be inclined with respect to the left-right direction of the vehicle.

  In the airbag 18 according to the embodiment, when the airbag 18 is inflated in a state where the tethers 44L and 44R are maintained in the locked state of the connecting member 45 to the locking members 50L and 50R, the protruding portions 26L and 26R. Since the sutured portions 41L and 41R constituting the top portion 26a are pulled toward the case 6 by the tethers 44L and 44R, the portions near the sutured portions 41L and 41R are as shown in FIGS. Second recesses 47L and 47R that are recessed toward the case 6 from the stitched portions 41L and 41R as starting points are formed. That is, the second recesses 47L and 47R are arranged so as to be substantially along the vertical direction with the stitched portions 41L and 41R as the bottom 47a. And in this case, a mode in which the portion of the second base fabric 35 between the bottom 27a of the recess 27 and the bottom 47a of the second recesses 47L and 47R slightly protrudes rearward (occupant side) Become.

  As shown in FIGS. 3 and 4, locking members 50 (50 </ b> L and 50 </ b> R) that constitute the restricting means RM <b> 1 are on the lower side of the bottom wall portion 7 in the case 6, and on the left and right sides of the insertion hole 7 a. It is arrange | positioned in the vicinity of the through-hole 7b used as both sides. Each locking member 50 (50L, 50R) is fixed to the operating piece 51 provided with two locking pins 51a that can be inserted into the loop portion 45a, and the lower surface side of the bottom wall portion 7, and retracts the operating piece 51. And an actuator 52 that can be operated. When the actuator 52 is operated so as to retract the operating piece 51, the locking pin 51a shifts from a state where the loop portion 45a is locked to a state where the locking is released. If this actuator 52 can move the operating piece 51 by an electrical signal from the control device 54, a piston cylinder that uses fluid pressure including the case where hydraulic pressure, water pressure, air pressure, or inflating gas pressure such as an inflator is generated, A motor utilizing such fluid pressure or electricity, an electromagnetic solenoid, a spring utilizing an urging force at the time of restoration, or the like can be used.

  Next, manufacture of the airbag 18 of embodiment is described. Reinforcing cloths 38 and 39 are sequentially stacked on the first base cloth 30 in a flatly deployed state, and at a position on the inner peripheral side of the mounting hole 22 and a position on the outer peripheral side at the peripheral edge 20 of the gas inlet 21. Each is sewn using a suture thread. Further, the portion of the reinforcing cloth 38 that is near the outer peripheral edge is also sewn to the first base cloth 30 using a suture thread. Then, the through-hole 23, the gas inflow port 21, and the attachment hole 22 are formed by drilling. The through hole 23, the gas inlet 21, and the attachment hole 22 may be formed in advance in each first base cloth 30 and the reinforcing cloths 38 and 39.

  Next, the second base fabric 35 is folded back at the center on the short side so that the peripheral portions 36a and 36b of the cutout portion 36 overlap each other. Then, the base portions 44a and 44a of the tethers 44L and 44R are overlapped so that the peripheral portions 36a and 36b are sandwiched therebetween, and the peripheral portions 36a and 36b are stitched together with the base portions 44a and 44a of the tethers 44L and 44R. 42 is formed. Next, the second base cloth 35 is opened while the seam allowance of the seam portion 42 is arranged on the inside, and the upper edge portion 35d of the second base fabric 35 is moved to the front edge portion 31a of the lower side portion 31 of the first base fabric 30. Sew on. Similarly, the lower edge portion 35e of the second base fabric 35 is sewn to the rear edge portion 31b of the lower portion 31 of the first base fabric 30. Then, the front and rear left edge portions 31 c in the lower portion 31 are sewn to the base portion side edge portion 32 b in the peripheral portion 32 a of the left portion 32, and the right edge portion 31 d is connected to the base portion in the peripheral portion 33 a of the right portion 33. Sewn to the side edge 33b. Thereafter, in a state where the intermediate portion 44b of the tether 44L is overlapped with the left edge portion 35b of the second base cloth 35, the peripheral edge portion 32a of the left portion 32 and the left edge portion 35b of the second base cloth 35 are placed in the middle of the tether 44L. The sutured portion 41L is formed by sewing together with the portion 44b. Similarly, in a state where the intermediate portion 44b of the tether 44R is overlapped with the right edge portion 35c of the second base cloth 35, the peripheral edge portion 33a of the right side portion 33 and the right edge portion 35c of the second base cloth 35 are connected to the tether 44R. The suture portion 41R is formed by sewing together with the intermediate portion 44b. After that, in order not to expose the seam allowance of the edge portion to the outside, the gas inflow port 21 is used to invert the loop portion 45a formed on the tip 44c side of the tethers 44L and 44R so as to protrude from the through hole 23. The airbag 18 in which the tethers 44L and 44R constituting the regulating means RM1 are connected can be manufactured.

  The mounting of the airbag 18 manufactured as described above on the vehicle will be described. First, the retainer 14 is disposed inside the airbag 18 so that the bolts 14a protrude from the mounting holes 22, and from the through holes 23. The airbag 18 is folded while maintaining the protruding state of the loop portion 45a, and the folded airbag 18 is wrapped with a breakable wrapping sheet (not shown) so as not to collapse. At this time, the loop portion 45a and the bolt 14a are projected from the wrapping sheet. Then, the folded airbag 18 is placed on the bottom wall portion 7 of the case 6 so that each bolt 14a protrudes from the bottom wall portion 7 of the case 6 and the loop portion 45a protrudes from the through hole 7b. Thereafter, the loop portion 45a protruding from the bottom wall portion 7 of the case 6 is attached to the locking pin 51a of the operating piece 51 of the locking member 50 (50L, 50R) fixed to the lower surface side of the bottom wall portion 7. Lock. Next, the main body portion 10 a of the inflator 10 is inserted into the case 6 from below the bottom wall portion 7 through the insertion hole 7 a, and each bolt 14 a protruding downward from the bottom wall portion 7 is inserted into the inflator 10. The flange portion 10c is inserted. Then, if the nut 15 is fastened to each bolt 14a protruding from the flange portion 10c of the inflator 10, the folded airbag 18 and the inflator 10 can be attached to the bottom wall portion 7 of the case 6.

  Then, the peripheral wall portion 8 of the case 6 is locked to the connecting wall portion 12c of the airbag cover 12 in the instrument panel 1 mounted on the vehicle, and a predetermined bracket (not shown) of the case 6 is fixed to the body side portion. In this case, the airbag device M1 can be mounted on the vehicle.

  After the air bag device M1 is mounted on the vehicle V, if the traveling vehicle V collides with an object located in front, the control device 54 outputs an operation signal to the inflator 10, and the inflator 10 The inflation gas is discharged from the gas discharge port 10b, and the airbag 18 expands and breaks the wrapping sheet, and the door portions 12a and 12b of the airbag cover 12 are pushed as shown by the two-dot chain line in FIG. It will be opened. The airbag 18 protrudes upward from an opening formed by opening the door portions 12a and 12b of the airbag cover 12, and between the upper surface 2 of the instrument panel 1 and the windshield 4 above the instrument panel 1. As shown in the two-dot chain line in FIG. 1, the expansion is completed by expanding and expanding rearward so as to close.

  And the airbag apparatus M1 of embodiment is the structure provided with the control means RM1 which can control the shape at the time of completion | finish of inflation of the airbag 18 according to the collision mode of the vehicle V, and is a tether which comprises the control means RM1. 44L, 44R and locking members (locking means) 50L, 50R are configured to be able to regulate the separation distance from the case 6 of the occupant protection part 24 in the airbag 18 when the inflation is completed.

  Specifically, in the airbag device M1 of the embodiment, the control device 54 inputs a signal from the collision detection sensor 57R, and the vehicle with the collision object that is located on the front side of the vehicle V and deviated from the center to the right side. When an asymmetrical collision (oblique collision) is detected, the actuator 52 of the locking member 50R arranged on the right side, which is the collision object side, inputs an operation signal from the control device 54 to cause the locking pin 51a to move. The tether 44R, which is actuated so as to be retracted and disposed on the right side on the collision object side, is released from the locking member 50R, and is disposed on the left side on the side away from the collision object. 44L does not operate the actuator 52, and the airbag 18 completes inflating in a state where the locking with the locking member 50L is maintained. That is, in the airbag apparatus M1 of the embodiment, when the vehicle obliquely collides with a colliding object located on the right side from the center, the case 6 of the portion located on the left side that is the side away from the colliding object in the occupant protection unit 24. While the separation distance from the air bag 18 is regulated by the tether 44L, the airbag 18 completes the inflation. In other words, as shown in FIG. 13, the restraint surface 25 of the airbag 18 has a separation distance L1 from the case 6 of the right side portion 25b on the collision object side (right side) on the side away from the collision object ( The left side portion 25a of the left side is larger than the separation distance L2 from the case 6 and is inclined with respect to the left-right direction D of the vehicle. The right side portion is thickened to complete the expansion.

  Therefore, in the airbag apparatus M1 of the embodiment, when the vehicle V after the oblique turn turns in a state where the traveling direction is changed to turn to the left side that is the side away from the colliding object, the occupant MP As shown in FIG. 14B, even if the inertial force greatly moves toward the right side that is the collision object side, the right side of the airbag 18 that is the moving side (the center side of the vehicle V). Since the portion is inflated thickly, the occupant MP is prevented from slipping from the right edge 24a of the occupant protection part 24 in the airbag 18, and is stopped at the portion on the inflated right edge 24b side. The restraint surface 25 of the airbag 18 including the part that has been completely inflated can be restrained accurately. As a result, even if the occupant MP moves to the center side of the vehicle V, the occupant MP can be accurately restrained by the airbag 18 in which the center side of the vehicle V is inflated thickly.

  Further, in the airbag device M1 of the embodiment, the control device 54 inputs a signal from the collision detection sensor 57L, and the vehicle asymmetrical collision with a collision object located on the left side of the center in front of the vehicle V. When (an oblique projection) is detected, the tether 44L disposed on the left side on the collision object side is released from the engagement with the locking member 50L, and is disposed on the right side on the side away from the collision object. The airbag 18 is inflated in a state where the tether 44R is kept locked with the locking member 50R. That is, in the airbag apparatus M1 of the embodiment, when the vehicle collides with a colliding object located on the left side from the center, the case 6 of the portion located on the right side on the side away from the colliding object in the occupant protection unit 24. While the separation distance from the air bag 18 is regulated by the tether 44R, the airbag 18 completes the inflation. In other words, the restraint surface 25 of the airbag 18 has a separation distance from the case 6 of the left side portion 25a on the collision object side (left side) of the right side portion 25b on the side (right side) away from the collision object. It is arranged so as to be larger than the separation distance from the case 6 and inclined with respect to the left-right direction D of the vehicle. Therefore, when the vehicle after the oblique turn turns in a state in which the traveling direction is changed so as to be directed to the right side that is the side away from the collision object, the occupant MP is inertial as shown in FIG. Even if it moves greatly toward the left side (front pillar portion FP side) that is the collision object side due to the force, the left side (front pillar portion FP side) portion of the airbag 18 that is the moving side is thick. Since it is inflated, the occupant MP is prevented from slipping from the left edge 24b of the occupant protection portion 24 in the airbag 18, and is stopped at the inflated left edge 24b side, and the occupant MP is made thicker. The restraint surface 25 of the airbag 18 including the part where the inflation has been completed can be restrained accurately. As a result, even if the occupant MP moves to the front pillar portion FP side, the occupant MP can be accurately restrained by the airbag 18 inflated thickly on the front pillar portion FP side, and the highly rigid front pillar portion FP. The occupant MP can be properly protected from.

  Therefore, in the airbag apparatus M1 according to the embodiment, the occupant MP can be protected accurately during the oblique collision (asymmetrical collision).

  In the airbag device M1 of the embodiment, the control device 54 is a position detection sensor 55 as an occupant detection sensor capable of detecting the physique of the occupant MP seated on the seat SE, and an occupant detection capable of detecting the weight of the occupant MP. It is electrically connected to a weight sensor 56 as a sensor, and is configured to be able to determine a preferred inflation mode of the airbag according to the seated occupant MP. That is, in the airbag apparatus M1 of the embodiment, the separation distance from the case 6 to the occupant protection unit 24 in the airbag 18 at the completion of the inflation can be changed according to the occupant MP seated.

  Specifically, the control device 54 to which signals from the position detection sensor 55, the weight sensor 56, and the collision detection sensor 57C are input is symmetrically collided with an object to be collided that is positioned at the approximate center of the left and right in front of the vehicle ( When the seating of the small passenger MP or the passenger MP sitting close to the airbag device M1 is detected at the time of frontal collision), the tethers 44L and 44R are all connected to the locking members 50L and 50R. If the airbag 18 is deployed and inflated in a state where the locking of the airbag 18 is maintained, the separation distance from the case 6 to the occupant protection portion 24 is reduced as shown in the two-dot chain line in FIGS. In the set state, the inflation is completed, and the small passenger MP and the passenger MP sitting near the airbag device M1 can be protected without pressing more than necessary.

  On the contrary, the control device 54 to which signals from the position detection sensor 55, the weight sensor 56, and the collision detection sensor 57C are input is positioned away from the large occupant MP and the airbag device M1 at the time of a frontal collision of the vehicle. If the seating of the seated occupant MP is detected, the airbags can be deployed and inflated with the respective tethers 44L and 44R unlocked from the locking members 50L and 50R. 9 and 16, as shown in FIG. 9 and FIG. 16, the expansion is completed in a state where the separation distance from the case 6 to the occupant protection unit 24 is set large, and substantially the entire area along the left-right direction of the vehicle V is evenly distributed. The air bag 18 inflated thickly receives a large occupant MP with high kinetic energy and an occupant MP seated away from the air bag device with a cushioning property. Door can be.

  Therefore, in the airbag apparatus M1 of the embodiment, the inflation completion shape of the airbag 18 can be changed according to the physique and seating position of the occupant MP, and the occupant MPs having different physiques and seating positions are protected appropriately. This is preferable. In the airbag apparatus M1 of the embodiment, the restraint surface 25 of the airbag 18 that has been inflated is substantially parallel to the left-right direction D of the vehicle as shown in FIG. In addition, since the restraint surface 25 is disposed so as to face the occupant MP, the occupant MP can be accurately protected.

  In addition, if such a point is not considered, you may use the airbag apparatus M2 of 2nd Embodiment as shown in FIGS. The airbag device M2 has the same configuration as the airbag device M1 described above except for the restricting means RM2, and the same members are denoted by the same reference numerals and description thereof is omitted.

  The regulating means RM2 used in the airbag apparatus M2 of the second embodiment includes one tether 44AR disposed on the right side that is the vehicle interior I from the gas inlet 21 inside the airbag 18A, and the tip of the tether 44AR. The locking member 50AR is a locking means for locking the 44c side to the case 6 side. The tether 44AR and the locking member 50AR have the same configuration as the tether 44 and the locking member 50 in the above-described airbag device M1, and the tether 44AR has a base portion 44a and a stitched portion 41R that constitutes the top portion 26a of the protruding portion 26R. The intermediate portion 44b is sewn to the suture portion 42 constituting the bottom portion 27a of the recess 27.

  In the airbag device M2 of the second embodiment, the control device 54 inputs a signal from the collision detection sensor 57L, is located on the front side of the vehicle V and deviates from the center to the left side, and is located outside the vehicle with respect to the case 6. When an asymmetrical collision (oblique projection) of a vehicle with a collision object located in the O direction is detected, the actuator 52 of the locking member 50AR is not operated, and the loop portion 45a engages with the locking pin 51a. The airbag 18A completes inflating in the state where the tether 44AR and the locking member 50AR are maintained locked. That is, in the airbag apparatus M2 of the second embodiment, the case 6 at a position located on the right side which is the vehicle interior I (side away from the collision object) with respect to the case 6 in the occupant protection unit 24 at the time of the oblique collision. While the separation distance from the air bag 18A is regulated by the tether 44AR, the airbag 18A completes the inflation. In other words, as shown in FIG. 19, the restraint surface 25 of the airbag 18 </ b> A is set such that the separation distance L <b> 3 from the case 6 of the left side portion 25 a located on the vehicle outer side O (collision object side) The right side portion 25b located on the side far from the object is arranged to be larger than the separation distance L4 from the case 6 and inclined with respect to the left-right direction D of the vehicle. The left part located on the vehicle outer side O on the collision object side is thickened to complete the expansion. Therefore, when the vehicle after the oblique turn turns in a state where the traveling direction is changed so as to be directed to the right side that is the vehicle interior I that is away from the collision object, the occupant MP is separated from the vehicle exterior O by the inertial force. Even if the vehicle moves largely toward the front pillar portion FP, the portion on the front pillar portion FP side of the airbag 18A on the moving side is inflated thickly. The occupant MP is prevented from slipping from the left edge 24b of the vehicle 24, stopped at a portion on the left edge 24b side inflated, and the occupant MP is restrained by the airbag 18A including the portion where the thickening is completed. The surface 25 can be accurately restrained, and the occupant MP can be accurately protected from the highly rigid front pillar portion.

  Further, in the airbag apparatus M2 of the second embodiment, when the control device 54 that is inputting a signal from the collision detection sensor 57C detects a frontal collision of the vehicle, the actuator 52 of the locking member 50AR is When the operation signal from the control device 54 is input and the locking pin 51a is pulled in and the tether 44AR is unlocked from the locking member 50AR, the airbag 18 can be Since the inflation is completed as shown by the two-dot chain line in FIG. 19, the occupant MP is increased by the airbag 18 that has been fully inflated by increasing the separation distance of the occupant protection part 24 from the case 6 at the time of a frontal collision. Can be protected accurately. And, at the time of a frontal collision of the vehicle V, the restraint surface 25 of the airbag 18A that has been inflated is disposed so as to face the occupant MP so as to be substantially parallel to the left-right direction D of the vehicle V. Therefore, the occupant MP can be restrained accurately by the restraint surface 25.

  Therefore, even in the airbag apparatus M2 of the second embodiment, it is possible to accurately protect the occupant during an asymmetrical collision (oblique collision). Further, in the airbag apparatus M2 of the second embodiment, the symmetric collision (frontal collision) ) Even at times, it is possible to protect the passengers accurately.

  Note that in the airbag apparatus M2 of the second embodiment, a signal from the collision detection sensor 57R is input, and the vehicle V is located on the front side of the vehicle V and deviated from the center to the right side. When an asymmetrical collision (oblique projection) of the vehicle with the colliding object located at is detected, the actuator 52 of the locking member 50AR receives the operation signal from the control device 54 and causes the locking pin 51a to be pulled. The airbag 18 is set so as to be inflated in a state where the tether 44AR is unlocked from the locking member 50AR. In this case, the vehicle V turns in a state where the traveling direction is changed so as to be directed to the left side that is the vehicle outer side O away from the collision object after the oblique collision. It moves so that it may go to the vehicle inside I which becomes a collision object side. And, since a vehicle body side member having rigidity such as a pillar portion arranged outside the passenger's vehicle is not usually arranged close to the inside of the passenger seated in the passenger seat, it is Similarly, an occupant can be protected without hindrance by an airbag that has been inflated.

  Moreover, in airbag apparatus M1, M2 of 1st, 2nd embodiment, while being arrange | positioned in the passenger | crew protection part 24 along the substantially up-down direction at the time of completion | finish of inflation of the airbags 18 and 18A, from the surrounding site | parts A recessed portion 27 configured by being recessed is provided. Specifically, in the airbag devices M1 and M2 of the first and second embodiments, the occupant protection part 24 is recessed between the protrusions 26L and 26R arranged along the vertical direction and the protrusions 26L and 26R. A recess 27 is formed. That is, the restraint surface 25 of the occupant protection part 24 when the inflating is completed is uneven along the left and right to increase frictional resistance and hooking resistance, so that the head of the occupant MP restrained by the occupant protection part 24 The MH can be prevented from moving to the left and right with respect to the restraint surface 25, and the occupant protection unit 24 can accurately protect the head MH of the occupant MP.

  In particular, in the airbag apparatuses M1 and M2 of the first and second embodiments, the airbags 18 and 18A are inflated with the tethers 44L, 44R, and 44AR connected to the case 6 side by the locking members 50L, 50R, and 50AR. In this case, the stitched portion 41R constituting the top portion 26a of the projecting portion 27R is pulled toward the case 6 to form the second concave portions 47L and 47R (FIGS. 10, 11, 13, 18, 19). That is, in the airbag devices M1 and M2 of the first and second embodiments, the airbags 18 and 18A are inflated in a state where the tethers 44L, 44R and 44AR are connected to the case 6 side by the locking members 50L, 50R and 50AR. Since the concave portion 27 and the second concave portions 47L and 47R are juxtaposed along the left-right direction, the lateral displacement of the head MH of the occupant MP with respect to the restraining surface 25 when restraining the occupant is This can be further prevented.

  In the airbag apparatuses M1 and M2 of the first and second embodiments, the intermediate portion 44c of each of the tethers 44L, 44R, and 44AR is sewn to the suture portions 41L and 41R. 44R and 44AR need not be joined to the vicinity of the suture portions 41L and 41R. For example, the intermediate portion 44c is inserted into an insertion hole or a loop-shaped member provided near the suture portions 41L and 41R. It is good also as a structure connected so that it may shift | deviate with respect to the suture parts 41L and 41R.

  Further, as shown in FIG. 20, the airbag 18B has a concave portion 27B disposed along the vertical direction at the center of the left and right at the time of completion of inflation in a state where the restriction by the restriction means RM1 is released. You may use the thing of the structure which enlarged the amount of dents. As shown in FIG. 22, such an airbag 18 </ b> B is configured to be curved in a substantially C-shape and a first base fabric 30 </ b> B having a shape similar to the first base fabric 30 constituting the airbag 18 described above. And two belt-like second base fabrics 60L and 60R. The airbag 18B has the same configuration as the airbag 18 described above except that the second base fabrics 60L and 60R are composed of two sheets, and the configuration when the inflation is completed is slightly different. Is shown with “B” at the end, and detailed description is omitted.

  In the airbag 18B having the configuration shown in FIG. 20, when the inflation is completed in a state where the restriction by the restriction means RM1 is released, the protrusions 26BL and 26BR disposed on the left and right sides of the recess 27B are relatively The protrusion amount is increased toward the occupant side toward the rear side. Therefore, when the occupant comes into contact with the airbag 18B that has been inflated in a state where the restriction by the restricting means RM1 is released, the protrusions 26BL and 26BR that protrude greatly rearward are first attached to the left and right shoulders of the occupant. As a result, the kinetic energy of the occupant moving forward is reduced, and then the occupant's head whose shoulder is restrained by the left and right protrusions 26BL and 26BR is greatly recessed between the protrusions 26BL and 26BR. It will be restrained so that the movement to the front side may be suppressed while entering the portion of the concave portion 27B to be arranged. Therefore, the occupant's head can be softly received while suppressing the reaction force from the airbag 18B in a state where the kinetic energy is reduced by the protrusions 26BL and 26BR.

  Further, in the airbag 18B having such a configuration, as shown in FIG. 22, when one tether 44BL completes the expansion with the locking with the locking member 50L being maintained, as shown in FIG. As described above, even when both the tethers 44BL and 44BR are inflated in a state where the locking with the locking members 50L and 50R is maintained, the recess 27B and the suture are compared with the airbag 18 described above. The second recesses 47L and 47R formed by pulling the portions 41BL and 41BR to the case side by the tethers 44BL and 44BR are arranged so as to be largely recessed as compared with the airbag 18 described above. Therefore, the concavity and convexity formed along the left and right sides can be increased on the restraint surface 25B of the occupant protection part 24B, and the frictional resistance and hooking resistance are further increased. On the other hand, it is possible to further suppress the movement so as to be shifted left and right.

It is a side view which shows the state of the instrument panel and passenger | crew with which the airbag apparatus for passenger seats which is 1st Embodiment of this invention is mounted. It is sectional drawing along the front-back direction which shows the airbag apparatus for front passenger seats of 1st Embodiment. It is a figure which shows the III-III site | part of FIG. It is a figure which shows the IV-IV site | part of FIG. It is the perspective view seen from the back side of the state where the air bag used in the air bag device of a 1st embodiment was inflated alone. It is the perspective view seen from the front side of the state which inflated the airbag of FIG. 5 alone. FIG. 7 is a cross-sectional view of a state where the airbag of FIG. 5 is inflated alone, corresponding to the VII-VII portion of FIG. 5, wherein the airbag releases the locking between the tether and the locking member. It is a figure which shows the state expanded in the state. FIG. 7 is a cross-sectional view of a state where the airbag of FIG. 5 is inflated alone, corresponding to the VII-VII portion of FIG. 5, in which the airbag maintains the locking between the tether and the locking member. It is a figure which shows the state expanded in the state. It is sectional drawing of the state which expanded the airbag of FIG. 5 alone, and is a figure corresponding to the IX-IX part of FIG. 7, Comprising: An airbag cancels | releases latching with both tethers and a locking member. It is a figure which shows the state which expanded in the made state. FIG. 8 is a cross-sectional view of the airbag of FIG. 5 in a state where the airbag is inflated alone, corresponding to the IX-IX portion of FIG. 7, wherein the airbag releases the engagement between one tether and the engagement member. It is a figure which shows the state expanded by maintaining the latching of the other tether and the latching member. It is sectional drawing of the state which expanded the airbag of FIG. 5 alone, and is a figure corresponding to the IX-IX part of FIG. 7, Comprising: An airbag maintains the latching | locking of both tethers and a locking member. It is a figure which shows the state which expanded in the made state. It is a top view which shows the member which comprises the airbag of FIG. It is a figure explaining the use condition of the airbag apparatus of 1st Embodiment, and is the schematic which looked at the state which the airbag completed the expansion | swelling from the upper direction of the vehicle, Comprising: The tether by which an airbag is arrange | positioned on the left side It is a figure of the state which completed the expansion in the state by which the latching with the latching member was maintained. It is a schematic plan view explaining the turning of the vehicle and the inflated state of the airbag in the airbag device of the first embodiment. FIG. 16 is a schematic plan view illustrating the turning of the vehicle and the inflated state of the airbag in the airbag device of the first embodiment, and is a view illustrating a state in which the vehicle turns in the direction opposite to FIG. 15. It is a figure explaining the use condition of the airbag apparatus of 1st Embodiment, and is the schematic which looked at the state which the airbag completed the expansion | swelling from the upper direction of the vehicle, Comprising: An airbag latches both tethers It is a figure of the state which completed expansion in the state which the latching with the member was cancelled | released. FIG. 5 is a schematic cross-section along the front-rear direction of a state in which an airbag used in a passenger seat airbag apparatus according to a second embodiment of the present invention is inflated as a single body, and the airbag includes a tether and a locking member; It is a figure which shows the expanded state in the state which cancelled | released latching. FIG. 18 is a schematic cross-sectional view along the front-rear direction of the state in which the airbag of FIG. 17 is inflated alone, and shows the state in which the airbag is inflated while maintaining the locking between the tether and the locking member. It is. It is a figure explaining the use condition of the airbag apparatus of 2nd Embodiment, and is the schematic which looked at the state which the airbag completed the expansion | swelling from the upper direction of the vehicle, Comprising: An airbag is a tether, a locking member, It is a figure of the state which completed the expansion in the state by which the latching was maintained. A modification of the airbag that can be used in the airbag device of the present invention, in the front-rear direction in which the airbag is inflated as a single unit with the locking of both the tether and the locking member released It is a schematic sectional drawing in alignment with. It is a top view which shows the member which comprises the airbag of FIG. FIG. 21 is a schematic cross-sectional view along the front-rear direction of a state where the airbag of FIG. 20 is inflated as a single unit with the locking of one tether and the locking member released. FIG. 21 is a schematic cross-sectional view along the front-rear direction of a state where the airbag of FIG. 20 is inflated as a single unit with the tether and the locking member being held locked.

Explanation of symbols

1 ... Instrument panel (instrument panel),
6 ... Case (storage part),
10 ... Inflator,
18, 18A, 18B ... airbags,
19 ... the side of the vehicle body,
20 ... peripheral edge (attachment part),
21 ... Gas inlet,
24 ... Occupant protection department,
25 ... restraint surface,
27.27B ... concave,
44 (44L, 44R, 44AR) ... tether,
47 (47L, 47R) ... second recess,
50 (50L, 50R, 50AR) ... locking member (locking means),
54 ... Control device,
MP ... Crew,
RM1, RM2 ... regulating means,
V ... Vehicle,
M1, M2 (for passenger seat) airbag device.

Claims (5)

The bag is folded and stored in the storage area, and the expansion gas is allowed to flow into the bag so that the bag protrudes from the storage area and expands and expands. When the expansion is completed, the bag can be restrained by being placed on the passenger side. An airbag having an occupant protection part having a restraining surface, and a vehicle body side part disposed on the storage part side and attached to the storage part;
A regulating means capable of regulating the shape of the airbag when the inflation is completed according to the collision mode of the vehicle;
An airbag device comprising:
The regulating means is
Inside the airbag, the airbag is disposed at two locations that are substantially bilaterally symmetric with respect to the storage site of the vehicle body side portion of the airbag when the inflation is completed. And a tether configured to be able to regulate a separation distance from the storage portion of the occupant protection part when the inflation is completed,
A lock that locks each tether to the storage site side and that is controlled by a control device that determines a collision mode of the vehicle to release the lock of the tether to the storage site side during operation. Means,
And is configured to include
When the control device detects an asymmetrical collision of the vehicle with a collided object that is biased to the left or right of the center in front of the vehicle, the tether disposed on the collided object side and the locking The restraint surface when the airbag is completely inflated is configured such that the engagement with the means is released, and the separation distance from the storage part on the collision object side is the side away from the collision object The airbag device is arranged to be inclined with respect to the left-right direction of the vehicle so as to be larger than a separation distance from the storage part.   The control device is configured to be able to determine a suitable inflation mode of the airbag in accordance with the seated occupant, and the vehicle has a symmetrical collision with a colliding object located at the approximate center of the left and right in front of the vehicle. Can be released according to the seated occupant, or all the tethers and the locking means can be locked. The airbag device according to claim 1, wherein the airbag device is configured to be maintainable so that the restraint surface is disposed substantially parallel to a left-right direction of the vehicle. The bag is folded and stored in the storage area, and the expansion gas is allowed to flow into the bag so that the bag protrudes from the storage area and expands and expands. When the expansion is completed, the bag can be restrained by being placed on the passenger side. An airbag having an occupant protection part having a restraining surface, and a vehicle body side part disposed on the storage part side and attached to the storage part;
A regulating means capable of regulating the shape of the airbag when the inflation is completed according to the collision mode of the vehicle;
An airbag device comprising:
The regulating means is
Inside the airbag, the airbag is disposed at a position on the vehicle interior side in the left-right direction from the attachment portion of the side portion of the vehicle body to the storage portion when the inflation is completed, and the storage portion side and the occupant One tether connected to a protection part and configured to be able to regulate a separation distance from the storage part of the occupant protection part when inflation is completed;
Locking means for locking the tether to the storage site side and controlling the operation by a control device that determines a collision mode of the vehicle, and releasing the lock of the tether to the storage site side during operation. When,
And is configured to include
The control device is
The tether and the engagement are detected when an asymmetrical collision of the vehicle with an object to be collided is located on the front side of the vehicle and is deviated from the center to one of the left and right sides and located in the vehicle outer direction with respect to the storage portion. A vehicle that maintains the locking with the stopping means, and the separation surface of the restraint surface when the airbag is completely inflated is separated from the storage part on the vehicle exterior with respect to the storage part. Inclined with respect to the left-right direction of the vehicle so as to be larger than the separation distance from the storage part on the inside,
When detecting a symmetric collision of the vehicle with a colliding object located at the approximate center of the left and right in front of the vehicle, releasing the locking of the tether and the locking means, An airbag device configured to be disposed substantially parallel to a left-right direction of a vehicle.   The occupant protection portion is formed with a recess formed so as to be substantially along the vertical direction when the airbag is completely inflated, and is recessed from a surrounding portion. The airbag apparatus in any one of 1 thru | or 3.   5. The airbag device according to claim 4, wherein when the inflation of the airbag is completed, the recesses are arranged in parallel at two or more locations along the left-right direction.

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