JP4245610B2 - Passenger restraint device for passenger seat and control method therefor - Google Patents

Description

  The present invention relates to a passenger seat occupant restraint apparatus and a control method therefor.

  The following Patent Document 1 includes a left half airbag disposed outside as viewed from the passenger side seated in the passenger seat, and a right half airbag disposed inside, and a front end of the left half airbag. An airbag for a passenger seat is disclosed in which a front portion and a front end portion of a right-half airbag are connected by a tie panel.

According to the above configuration, when the inflator is activated and gas is generated at the time of a frontal collision, the left half airbag and the right half airbag are inflated and deployed to catch both shoulders and chest of the passenger seated in the passenger seat. In addition to restraining, the tie panel receives and restrains the head of the occupant.
JP 2003-335203 A

  However, in the case of the above prior art, there are problems described below in relation to the three-point seat belt device.

  In other words, the shoulder and chest that are normally located outside the vehicle of the occupant are firmly restrained by the shoulder-side webbing, so the restraining force is strong. On the other hand, the shoulder and chest located on the inside of the occupant are not restrained by the shoulder side webbing, so the restraining force is relatively weak. Therefore, in this situation, when the passenger airbag having the above configuration is inflated and deployed, the restraining force on the shoulder and chest located on the outer side of the vehicle restrained by the shoulder-side webbing is less on the shoulder side. The restraining force acting on the shoulder and chest located on the inner side of the vehicle that is not restrained by the webbing is relatively stronger, and the restraining force acting on the occupant's upper body becomes uneven on the left and right. Therefore, the prior art has room for improvement in this respect.

  In view of the above facts, the present invention can provide an occupant restraint device for a passenger seat and a control method therefor that can reduce the difference between the left and right restraint forces acting on both shoulders of the occupant as much as possible without reducing the overall restraint force. Is the purpose.

The present invention according to claim 1 corresponds to an outer airbag provided corresponding to a shoulder located on the outer side in the vehicle width direction of an occupant seated in the passenger seat and a shoulder located on the inner side in the vehicle width direction of the occupant. A passenger seat airbag device including a passenger seat airbag configured to include an inner airbag provided, and gas supply means for supplying gas to the passenger seat airbag at the time of a frontal collision, and a passenger seat A passenger seat occupant restraint device having a three-point seat belt device provided with a webbing for restraining the occupant on the side, and on the shoulder located on the outer side in the vehicle width direction of the occupant from the shoulder side webbing during a frontal collision The reaction force received by the shoulder located on the inside of the occupant in the width direction of the occupant from the inner airbag during a frontal collision is such that the restraining force acting on both shoulders of the occupant, including the acting restraining force, is substantially equal. A bag? It was set to be higher than the reaction force shoulder receives positioned in the vehicle width direction outer side of the occupant, and characterized in that.
According to a second aspect of the present invention, there is provided an outer airbag provided corresponding to a shoulder positioned on the outer side in the vehicle width direction of an occupant seated in the passenger seat and a shoulder positioned on the inner side in the vehicle width direction of the occupant. A passenger seat airbag device including a passenger seat airbag configured to include an inner airbag provided, and gas supply means for supplying gas to the passenger seat airbag at the time of a frontal collision, and a passenger seat A passenger seat occupant restraint device having a three-point seat belt device provided with a webbing for restraining the occupant on the side, and on the shoulder side acting on the shoulder located on the outer side in the vehicle width direction of the occupant during a frontal collision The inner air during a frontal collision is such that the sum of the restraining force due to webbing and the restraining force due to the outer airbag and the restraining force due to the inner airbag acting on the shoulder located in the vehicle width direction of the occupant are substantially equal. The reaction force received by the shoulder located on the inner side in the vehicle width direction of the occupant is set to be higher than the reaction force received by the shoulder located on the outer side in the vehicle width direction of the occupant from the outer airbag. It is said.

According to a third aspect of the present invention, in the passenger seat occupant restraint device according to the first or second aspect , the outer airbag and the inner airbag are partitioned from each other so that no gas flows between them. It is characterized by that.

According to a fourth aspect of the present invention, in the passenger seat occupant restraint device according to any one of the first to third aspects, an exhaust port is formed in each of the outer airbag and the inner airbag. The opening area of the first exhaust port formed in the inner airbag is set to be smaller than the opening area of the second exhaust port formed in the outer airbag.

According to a fifth aspect of the present invention, in the passenger seat occupant restraint device according to any one of the first to third aspects, an exhaust port is formed in each of the outer airbag and the inner airbag. The exhaust port is closed by a closing member attached by a tear seam, and the tear strength of the tear seam of the first closing member that closes the first exhaust port formed in the inner airbag is formed in the outer airbag. It is characterized by being set higher than the tear strength of the tear seam of the second closing member that closes the second exhaust port.
According to a sixth aspect of the present invention, in the passenger seat occupant restraint device according to any one of the first to third aspects, an opening area is set to be the same for the outer airbag and the inner airbag. Each exhaust port is formed and the exhaust port is closed by a closing member attached by a tear seam, and the tear strength of the tear seam of the first closing member closing the first exhaust port formed in the inner airbag is determined. This is characterized in that it is set to be higher than the breaking strength of the tear seam of the second closing member that closes the second exhaust port formed in the outer airbag.

According to a seventh aspect of the present invention, in the passenger seat occupant restraint device according to any one of the first to third aspects, a gas supply path from the gas supply means to the outer airbag and the inner airbag. Provided with a rectifying means provided with a distribution opening for distributing the gas supplied from the gas supply means to each of the outer airbag and the inner airbag, and supplies the gas to the inner airbag. The opening area of the first distribution opening is set larger than the opening area of the second distribution opening for supplying gas to the outer airbag.

According to an eighth aspect of the present invention, in the passenger seat occupant restraint device according to any one of the first to third aspects, the gas supply means includes a gas supply amount to the outer airbag and the inner air. The gas supply amount to the bag is configured to be changeable.
According to a ninth aspect of the present invention, in the passenger seat occupant restraint device according to the eighth aspect, the gas supply means is constituted by integrating two gas supply means having different outputs. It is said.

The method for controlling a passenger seat occupant restraint device according to the present invention described in claim 10 is applied to the passenger seat occupant restraint device according to any one of claims 1 to 3, and an occupant is seated in the passenger seat. Occupant seating detection means for detecting whether or not, a webbing attachment detection means for detecting whether or not the occupant seated in the passenger seat has attached webbing, a reaction force received by the occupant from the outer airbag, and the inner airbag Reaction force changing means for relatively changing the reaction force received by the occupant from the passenger, the occupant seating detecting means detects that the occupant is seated in the passenger seat, and the webbing attachment detecting means If detected, the reaction force changing means is controlled so that the reaction force received by the occupant from the inner airbag at the time of a frontal collision is higher than the reaction force received by the occupant from the outer airbag, When the seating detection means detects that an occupant is seated in the passenger seat and the webbing attachment detection means does not detect the occupant's webbing, the reaction force received by the occupant from the inner airbag during a frontal collision and the outer airbag The reaction force changing means is controlled so that the reaction force received by the occupant is substantially equal.

The present invention of claim 11, wherein, in the control method of the occupant restraint system for a passenger seat according to claim 10, wherein the reaction force changing means, gas supply sent from the gas supply means to the inner airbag and the outer air bag The gas supply / exhaust amount changing means can change the amount or the amount of gas exhausted from the inner airbag and the outer airbag to the outside of the airbag.

  According to the first aspect of the present invention, when a frontal collision occurs, the gas supply means operates to supply gas to the outer airbag and the inner airbag of the passenger seat airbag, respectively. As a result, the passenger seat airbag is inflated and deployed, the outer airbag restrains the shoulder located on the outer side in the vehicle width direction of the occupant, and the inner airbag restrains the shoulder located on the inner side in the vehicle width direction. As a result, the collision energy that acts on the occupant's upper body during a frontal collision is absorbed.

Here, the passenger seated in the passenger seat is normally in a webbing wearing state by a three-point seat belt device. For this reason, the shoulder and chest located on the outer side in the vehicle width direction of the occupant are subjected to restraining force by the webbing on the shoulder side, and a state in which the restraint force is relatively higher than the shoulder and chest located on the inner side in the vehicle width direction. It is in. In view of this point, in the present invention, the restraining force that acts on both shoulders of the occupant, including the restraining force that acts on the shoulder located on the outer side in the vehicle width direction of the occupant from the shoulder-side webbing at the time of a frontal collision, becomes substantially equal. In addition, the reaction force received by the shoulder located on the inner side of the occupant in the vehicle width direction from the inner airbag during a frontal collision is higher than the reaction force received by the shoulder located on the outer side of the occupant in the vehicle width direction from the outer airbag. (Or as in the present invention of claim 2), the sum of the restraining force by the shoulder side webbing and the restraining force by the outer airbag acting on the shoulder located on the outer side of the occupant in the vehicle width direction at the time of a frontal collision And the restraining force by the inner airbag acting on the shoulder located on the inner side of the occupant in the vehicle width direction is received by the shoulder located on the inner side of the occupant in the width direction of the occupant during the frontal collision. That because towards the reaction force is set to be higher than the reaction force shoulder receiving the position from the outside the airbag in the vehicle width direction outer side of the occupant) considerable difference between the left and right eyes restraining force acting on the occupant of the shoulders Can be resolved.

According to the third aspect of the present invention, the outer airbag and the inner airbag are separated from each other so that gas does not flow between them. Therefore, the reaction force received by the occupant from the outer airbag and the occupant from the inner airbag The reaction force received by can be managed independently.

According to the fourth aspect of the present invention, the outer airbag and the inner airbag are each formed with an exhaust port, and the upper body of the occupant is received by the outer airbag and the inner airbag. In this case, the gas inside the airbag is exhausted to the outside of the airbag to prevent the occupant from receiving excessive reaction force from the outer airbag and the inner airbag.

  Here, in this invention, since the opening area of the 1st exhaust port formed in the inner side airbag was set smaller than the opening area of the 2nd exhaust port formed in the outer side airbag, the upper body of the passenger | crew was received. At this time, more gas is discharged from the second exhaust port. For this reason, the restraining force of the occupant by the inner airbag is higher than the restraining force of the occupant by the outer airbag. Therefore, when the restraining force by the webbing on the shoulder side is combined, the left-right difference in restraining force acting on both shoulders of the occupant is substantially eliminated.

  In addition, according to the present invention, since only the opening area of the exhaust port is changed, the number of parts does not increase.

According to the fifth aspect of the present invention, the tear strength of the tear seam of the first closing member that closes the first exhaust port formed in the inner airbag is greater than the second exhaust port formed in the outer airbag. When the upper body of the occupant is received by the outer airbag and the inner airbag, the tear seam of the outer airbag is set to the tear seam of the inner airbag. It breaks earlier. For this reason, the closed state of the second exhaust port by the second closing member is first released, and then the closed state of the first exhaust port by the first closing member is released. As a result, the restraining force of the occupant by the inner airbag is higher than the restraining force of the occupant by the outer airbag. Therefore, when the restraining force due to the webbing on the shoulder side is combined, the left-right difference in restraining force acting on both shoulders of the occupant is substantially eliminated.

In the present invention, exhaust ports are used in the same manner as in the invention described in claim 4 , but each exhaust port is blocked by a corresponding blocking member until the outer airbag and the inner airbag are inflated and deployed. Therefore, compared with the case where the exhaust port is opened from the beginning, the number of parts is increased, but the time for completing the deployment of the passenger seat airbag is shortened.

According to the seventh aspect of the present invention, gas is supplied from the first distribution opening of the rectifying means into the inner airbag, and gas is supplied from the second distribution opening of the rectifying means to the outer airbag. Done.

  Here, in the present invention, since the opening area of the first distribution opening is set larger than the opening area of the second distribution opening for supplying gas to the outer airbag, the gas supply amount into the inner airbag Becomes larger than the gas supply amount into the outer airbag. For this reason, the restraining force of the occupant by the inner airbag is higher than the restraining force of the occupant by the outer airbag. Therefore, when the restraining force by the webbing on the shoulder side is combined, the left-right difference in restraining force acting on both shoulders of the occupant is substantially eliminated.

  In addition, according to the present invention, the number of parts does not increase because only the opening area of the distribution opening is changed.

According to the eighth aspect of the present invention, the gas supply means is configured to be able to change the gas supply amount to the outer airbag and the gas supply amount to the inner airbag. If the capacity of the bag is the same, the reaction force received by the upper body of the occupant from the inner airbag is increased by increasing the gas supply amount to the inner airbag than the gas supply amount to the outer airbag. The reaction force that the upper body of the occupant receives from the bag can be reliably increased.

According to the tenth aspect of the present invention, when it is detected by the occupant seating detection means that the occupant is seated in the passenger seat and the occupant's webbing attachment is detected by the webbing attachment detection means, the inner air during the frontal collision is detected. The reaction force changing means is controlled so that the reaction force received by the occupant from the bag is higher than the reaction force received by the occupant from the outer airbag. On the other hand, if the occupant seating detection means detects that the occupant is seated in the passenger seat and the webbing attachment detection means does not detect the occupant's webbing, the reaction force received by the occupant from the inner airbag during a frontal collision The reaction force changing means is controlled so that the reaction force received by the occupant from the outer airbag is substantially equal. In other words, if the occupant seated in the passenger seat is not wearing the webbing, the restraining force due to the shoulder side webbing cannot be obtained. In this case, both shoulders of the occupant are received with substantially the same pressure. This prevents the reaction force applied to the passenger's shoulders from being unbalanced.

According to the eleventh aspect of the present invention, when it is detected by the occupant seating detection means that the occupant is seated in the passenger seat and the webbing attachment detection means detects the occupant's webbing attachment, the air supply / exhaust amount changing means Therefore, the amount of gas supplied to the inner airbag is higher than the reaction force received by the occupant from the inner airbag during a frontal collision. Or the amount of gas exhausted from the inner airbag is relatively smaller than the amount of gas exhausted to the outer airbag.

As described above, the passenger seat occupant restraint device according to the present invention according to claim 1 or 2 reduces the difference between the left and right restraint forces acting on both shoulders of the occupant as much as possible without reducing the overall restraint force. It has an excellent effect of being able to.

The passenger seat occupant restraint device according to the third aspect of the present invention has an excellent effect that the pressure difference between the outer airbag and the inner airbag can be easily set to a desired value.

The passenger seat occupant restraint device according to the present invention according to claim 4 has an excellent effect that the pressure difference between the outer airbag and the inner airbag can be easily set to a desired value with an extremely simple configuration. Have.

The passenger seat occupant restraint device according to the present invention described in claim 5 and claim 6 can easily set the pressure difference between the outer airbag and the inner airbag to a desired value with a simple configuration, It has an excellent effect that the time for completing the deployment of the passenger seat airbag can be shortened.

The passenger-seat occupant restraint device according to the present invention described in claim 7 has an excellent effect that the pressure difference between the outer airbag and the inner airbag can be easily set to a desired value with an extremely simple configuration. Have.

The passenger seat occupant restraint device according to the present invention described in claim 8 has an excellent effect that the pressure difference between the outer airbag and the inner airbag can be easily set to a desired value.

The control method of the passenger seat occupant restraint device according to the present invention according to claim 10 is excellent in that the passenger seated in the passenger seat can appropriately protect the passenger even when the webbing is not worn. Have

The method for controlling a passenger seat occupant restraint device according to the present invention according to claim 11 is a method of changing a gas supply amount to a passenger seat airbag or a gas exhaust amount from the passenger seat airbag depending on whether or not a webbing is attached. Therefore, the operation of the actuator can be completed before the passenger seat airbag device operates, and as a result, there is an excellent effect that stable control becomes possible.

[First Embodiment]
(Configuration of Airbag Device 10 for Passenger Seat)
Hereinafter, a first embodiment of a passenger seat occupant restraint device according to the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow IN indicates the vehicle width direction inner side.

  FIG. 3 shows a longitudinal sectional view of the passenger seat airbag apparatus 10 according to the present embodiment in an operating state. FIG. 2 shows an exploded perspective view of components (excluding the passenger seat airbag) constituting the module of the passenger seat airbag device 10. Further, FIG. 1 shows a rear view of the passenger seat airbag device 10 according to the present embodiment in a activated state.

  As shown in these drawings, the passenger seat airbag device 10 constituting a part of the passenger seat occupant restraint device is disposed on the passenger seat side of the top wall portion 12 </ b> A of the instrument panel 12. The airbag device 10 for the passenger seat is mainly composed of an airbag module 14 in which functional parts are accommodated and an airbag door 16 that closes an upper end opening portion of the airbag module 14.

  The airbag door 16 is disposed on the top wall portion 12A of the instrument panel 12 and breaks when the bag inflation pressure exceeds a predetermined value, and deploys to the windshield glass 18 side, and the back surface side of the deployment portion 16A A pair of front and rear leg portions 16B extending from the vehicle to the vehicle lower side. The leg portion 16B is formed with an attachment opening 20 for locking the leg portion 16B to an airbag case 22 described later. Note that the developing portion 16A may employ any of a type that opens one side toward the windshield glass 18, a type that expands forward and backward, and a type of other expansion type. Further, the tear line formed along the outer shape of the deploying portion 16A (excluding the deploying hinge) and breaking when the bag inflating pressure exceeds a predetermined value is usually formed as a thin portion of the instrument panel 12. Either a visible type in which the tear line can be visually recognized when viewed from the vehicle interior side or an invisible type that cannot be visually recognized when viewed from the vehicle interior side may be employed.

  The airbag module 14 includes a substantially box-shaped airbag case 22 supported by a strength member such as instrument panel reinforcement (not shown) via a bracket. As shown in FIG. 2, hook-like locking portions 24 are provided at a plurality of locations on the upper end portion of the front and rear walls 22 </ b> A of the airbag case 22, and legs of the airbag door 16 are connected to these locking portions 24. The airbag door 16 is attached to the airbag case 22 by locking the attachment opening 20 formed in the portion 16B.

  Further, a belt-like opening 25 is formed in a portion excluding both sides in the middle portion in the front-rear direction of the bottom wall portion 22B of the airbag case 22. A pair of left and right convex portions 26 having a semi-circular cross-sectional shape are formed on both sides. The left and right side wall portions 22 </ b> C are formed with concave portions 27 communicating with the convex portions 26.

  Inside the pair of left and right convex portions 26, an inflator 28 is mounted as a gas supply means formed in a substantially cylindrical shape. A plurality of gas ejection holes (not shown) (shown in another embodiment to be described later) are formed in a predetermined arrangement at predetermined positions on the peripheral wall portion of the inflator 28. Incidentally, the inflator 28 includes a front airbag sensor (not shown) arranged at a predetermined position on the front part of the vehicle body, a center airbag sensor (not shown) arranged in the center of the vehicle compartment (near the lower part of the center console box). When the frontal collision state is detected by the airbag ECU (not shown) and it is determined that the airbag is activated, a predetermined current is supplied to the ignition device, and gas is discharged from the plurality of gas ejection holes. It comes to be ejected.

  Further, in the airbag case 22 described above, a metal diffuser 36 as a rectifying means is mounted from above the pair of left and right convex portions 26. The diffuser 36 is formed in a substantially semi-cylindrical shape, and includes a front and rear flange portion 36A and a semi-cylindrical main body portion 36B that connects the front and rear flange portions 36A in a circular arc shape. The diffuser 36 is inserted into a gas supply opening formed in a root portion 48 (see FIG. 3) of a passenger seat airbag 32 to be described later, and the peripheral portion of the gas supply opening is air-filled. In a state of being sandwiched between the bottom wall portion 22B of the bag case 22, it is fixed by fixing means such as bolts and nuts (not shown).

  At this time, a bracket (not shown) that supports the inflator 22 from below may be fastened to the bottom wall portion 22B of the airbag case 22 together. The method of fixing the inflator 22 to the bottom wall portion 22B of the airbag case 22 and the method of fixing the diffuser 36 are not limited to the above, and various configurations can be employed.

  Further, in the airbag case 22 described above, the passenger seat airbag 32 shown in FIGS. 1 and 3 is stored in a folded state. The passenger-side airbag 32 is inflated to the front left side and mainly receives the left shoulder of the occupant as viewed from the occupant side seated in the passenger seat 30, and to the front right side of the occupant. A right airbag 46 as an inner airbag that mainly receives the right shoulder of the occupant, and a root portion 48 that connects the root portion of the left airbag 44 and the root portion of the right airbag 46 to each other. .

  When viewed from the side, the left airbag 44 and the right airbag 46 have a shape in which the front end side is narrowed and the rear end side is expanded in the vehicle vertical direction. In accordance with the round shape of the windshield glass 18, the left airbag 44 positioned on the outer side in the vehicle width direction is formed smaller than the right airbag 46 positioned on the inner side in the vehicle width direction. That is, the volume of the right airbag 46 located on the inner side in the vehicle width direction is set larger than that of the left airbag 46 located on the outer side in the vehicle width direction.

  Further supplementally, as an example, the front-rear direction intermediate portions or the rear end portions of the left airbag 44 and the right airbag 46 described above are cloth-shaped ties (not shown) formed in a substantially rectangular shape or the like when viewed from the passenger side. The panels are connected in the vehicle width direction. This tie panel is set at a position and range that can catch the occupant's head inertially moving to the front side of the vehicle at the time of a frontal collision, and plays a role of softly receiving the occupant's head at the time of a frontal collision. . Further, when the left airbag 44 and the right airbag 46 are inflated, the inner surfaces of both are in contact with each other. As a result, the space on the back side of the tie panel is narrowed, preventing the passenger's head and the like from entering between the left airbag 44 and the right airbag 46 excessively. The tie panel is an element grasped as a connecting member that connects the intermediate portion or the rear end side of the left airbag 44 and the intermediate portion or the rear end side of the right airbag 46 in the vehicle width direction in a broad sense. .

  Here, as shown in FIG. 3, the outer surface of each of the left airbag 44 and the right airbag 46 described above exhausts the internal gas when the upper body of the occupant is received, and the upper body of the occupant. Left vent hole 50A and right vent hole 50B are provided to reduce the reaction force applied to the vehicle (in other words, to reduce the bag internal pressure when the upper body of the occupant abuts against the passenger airbag 32). It has been. In the present embodiment, the opening area S1 of the right vent hole 50B as the first exhaust port formed in the right airbag 46 located on the inner side in the vehicle width direction is the second area of the left airbag 44 located on the outer side in the vehicle width direction. It is set smaller than the opening area S2 of the left vent hole 50A as an exhaust port.

  In addition, as shown in FIG. 2, the right side opening 40 and the left side opening 42 are formed side by side on the main body 36 </ b> B of the diffuser 36 with the boundary 38 interposed therebetween. In the embodiment, the opening area T1 of the right opening 40 as the first distribution opening located on the inner side in the vehicle width direction is set to be larger than the opening area T2 of the left opening 42 as the second distribution opening. Yes.

(Configuration of seat belt device 52)
Next, the configuration of the three-point seat belt device 52 will be outlined with reference to FIG. The passenger seat 30 is provided with a three-point seat belt device 52 that constitutes another part of the passenger seat occupant restraint device. The three-point seat belt device 52 includes a webbing 54 for restraining an occupant, a webbing take-up device 56 that winds one end of the webbing 54 in a layered manner around a take-up shaft, and the other end of the webbing 54 is not shown. An anchor plate, a shoulder anchor 58 that is supported so that the intermediate portion of the webbing 54 can be inserted and folded back, a tongue plate 62 that is inserted and supported so as to be movable in the intermediate portion of the webbing 54, and a seat cushion side portion of the passenger seat 30. And a buckle device 64 which is erected. The webbing take-up device 56 is disposed near the lower portion of the center pillar 66, and the anchor plate is fixed to the vehicle body floor 68 or the like. In this embodiment, as an example, a webbing take-up device 56 having a force limiter mechanism is used.

  By engaging the tongue plate 62 with the buckle device 64, the occupant is in a webbing wearing state of the three-point seat belt device 52. In this state, the webbing 54 from the tongue plate 62 to the anchor plate restrains the occupant's waist. The webbing 54 from the tongue plate 62 to the shoulder anchor 58 functions as a shoulder-side webbing 54B that restrains the shoulder and chest on the outside of the occupant.

(Action / Effect)
Next, the operation and effect of this embodiment will be described.

  After the occupant is seated on the passenger seat 30, the tongue plate 62 is engaged with the buckle device 64, thereby bringing the three-point seat belt device 52 into the webbing state. In the webbing wearing state, the shoulder and chest on the outside of the occupant are restrained by the shoulder side webbing 54B.

  When a frontal collision occurs in this webbing wearing state, a frontal collision has occurred due to a front airbag sensor and a center airbag sensor (not shown) that control the system including these sensors will be described in another embodiment described later. The collision detection signal is output to the airbag ECU. The airbag ECU determines whether or not a frontal collision has occurred. If it is determined that a frontal collision has occurred, a predetermined current is supplied to the inflator 28. Thereby, the inflator 28 operates and gas is ejected from the plurality of gas ejection holes. The jetted gas is rectified by the diffuser 36 and then supplied into the passenger seat airbag 32.

  As a result, when the passenger seat airbag 32 is inflated and the inflation pressure acting on the airbag door 16 reaches a predetermined value or more, the airbag door 16 is broken along the tear line to the windshield glass 18 side. Expands in a single-sided manner. When the airbag door 16 is deployed, a bag inflation opening 60 (see FIG. 3) is formed in the top wall portion 12A of the instrument panel 12, and the passenger seat airbag 32 is inflated toward the passenger seat 30 side. Is issued. When the deployment is completed, the left airbag 44 of the passenger seat airbag 32 is received around the left shoulder of the passenger seated in the passenger seat 30, and the right airbag 46 is received around the passenger's right shoulder. As a result, not only can the occupant be protected from the impact at the time of a frontal collision, but the occupant can be received on multiple sides, such as both shoulders, immediately after the passenger airbag 32 is deployed, and the load on the occupant can be dispersed. The load on the vehicle (reaction force acting on the occupant's upper body) can be reduced.

  Here, as described above, normally, an occupant sitting on the passenger seat 30 is in a webbing wearing state by the three-point seat belt device 52. For this reason, the shoulder and chest located on the outer side in the vehicle width direction of the occupant receive the restraining force (arrow F1 in FIG. 1) by the shoulder-side webbing 54B, and are more relative to the shoulder and chest located on the inner side in the vehicle width direction. Is in a state of receiving a high restraint force.

  In view of this point, in the passenger seat airbag device 10 according to the present embodiment, first, the left vent that has the opening area S1 of the right vent hole 50B formed on the side surface of the right airbag 46 formed on the side surface of the left airbag 44. Since the opening area S2 of the hole 50A is set to be smaller, the gas escapes from the right vent hole 50B and the left vent hole 50A after both shoulders of the occupant come into contact with the right airbag 46 and the left airbag 44 that are completely inflated and deployed. The exhaust resistance at that time is relatively large in the right vent hole 50B and relatively small in the left vent hole 50A. In other words, more gas is exhausted from the left vent hole 50B, and less gas is exhausted from the right vent hole 50A. For this reason, the reaction force (arrow F2 in FIG. 1) received by the occupant's right shoulder from the right airbag 46 is greater than the reaction force (arrow F3 in FIG. 1) received by the left shoulder from the left airbag 44. Accordingly, it is possible to substantially eliminate the left-right difference in the restraining force acting on the occupant's shoulders at the time of a frontal collision. That is, the restraining force (F1 + F3) acting on the occupant's left shoulder and the restraining force (F2) acting on the occupant's right shoulder can be made substantially equal (F1 + F3≈F2).

  Further, in addition to the configuration in which the ratio of the opening area of the left vent hole 50A and the right vent hole 50B is changed, gas is supplied to the left airbag 44 through the opening area T1 of the right opening 40, which is the rectifying opening of the diffuser 36. Since the opening area T2 of the left opening 42 is set to be larger, the gas supply amount into the right airbag 46 is relatively larger than the gas supply amount into the left airbag 44. Therefore, the restraining force of the occupant by the right airbag 46 (arrow F2 in FIG. 1) is higher than the restraining force of the occupant by the left airbag 44 (arrow F3 in FIG. 1). Accordingly, when the restraining force (arrow F1 in FIG. 1) by the shoulder-side webbing 54B is combined, the left-right difference in restraining force acting on both shoulders of the occupant at the time of a frontal collision can be considerably eliminated. That is, the restraining force (F1 + F3) acting on the occupant's left shoulder and the restraining force (F2) acting on the occupant's right shoulder can be made substantially equal (F1 + F3≈F2).

  As described above, according to the passenger seat airbag device according to the present embodiment, the left-right difference between the restraining forces acting on both shoulders of the occupant can be reduced as much as possible without reducing the overall restraining force.

  Incidentally, FIG. 5 is a graph in which time is taken on the horizontal axis and reaction force (load) applied to the occupant is taken on the vertical axis. Graph A shows the reaction force that the occupant receives from the shoulder-side webbing 54B during a frontal collision. In the graph A, the reaction force decreases after elapse of t1 because the force limiter is activated when t1 elapses. Graph B is the reaction force received by the occupant from the left airbag 44 located outside. Further, the graph C is a reaction force received by the occupant from the right airbag 46 located inside. When the reaction force received by the occupant's upper body from the left airbag 44 and the right airbag 46 peaks, the total reaction force in graphs A and B is substantially equal to the reaction force in graph C. I understand that. However, in the case of the webbing take-up device 56 provided with the force limiter mechanism, the reaction force between the left airbag 44 and the right airbag 46 is adjusted in consideration of the operating load (FL load) of the force limiter mechanism. It is only necessary that the force limiter mechanism be provided.

  Further, according to the passenger seat occupant restraint device according to the present embodiment, the left airbag 44 and the right airbag 46 are divided into right and left except for the root portion 48, and gas does not flow between the left airbag and the left airbag. The reaction force F3 received by the passenger from 44 and the reaction force F2 received by the passenger from the right airbag 46 can be managed separately. Therefore, the pressure difference between the left airbag 44 and the right airbag 46 can be easily set to a desired value.

  Further, in the passenger seat occupant restraint device described above, in the former configuration using the vent hole, only the opening area ratio between the left vent hole 50A and the right vent hole 50B is changed, so that the number of parts increases. There is no. Also, the latter configuration using the diffuser 36 only changes the opening area ratio between the right opening 40 and the left opening 42, so that the number of parts does not increase. Accordingly, the pressure difference between the left airbag 44 and the right airbag 46 can be easily set to a desired value with a very simple configuration.

  Supplementing the first embodiment described above, in this embodiment, both the configuration of changing the opening area ratio of the left and right vent holes 50A and 50B and the configuration of changing the opening area ratio of the left and right opening portions 40 and 42 of the diffuser 36 are both. However, there is no problem even if only one of the configurations is adopted.

  Further, to supplement the configuration for changing the opening area ratio of the left and right openings 40 and 42 of the diffuser 36, in the present embodiment, the capacity of the left airbag 44 on the outside according to the curved shape of the windshield glass 18 is described. Is set to be smaller than the capacity of the right airbag 46 on the inner side, so that there is no difference in reaction force received by the upper body of the occupant from the left airbag 44 and the right airbag 46 (the same bag inflation pressure is applied to the left and right). However, the opening area of the left opening 42 serving as a gas supply port to the left airbag 44 is set smaller than that of the right opening 40 serving as a gas supply port to the right airbag 46. However, in this embodiment, it means that the opening area ratio is intentionally changed to a larger side so as to eliminate the left-right difference in restraining force received by the upper body of the occupant.

  Further, in this embodiment, the diffuser 36 is used as the rectifying means, but a similar setting of the opening area ratio may be given by using a rectifying cloth instead of the diffuser 36.

[Second Embodiment]
Next, a second embodiment of the passenger seat occupant restraint device according to the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  FIG. 6 shows a front view of the passenger airbag 32 as viewed from the front side of the vehicle. As shown in this figure, in this embodiment, the diameters of the left vent hole 70A as the second exhaust port and the right vent hole 70B as the first exhaust port (as viewed from the passenger side) are set to be the same. Therefore, there is no difference between the left and right opening areas. The left vent hole 70A is closed by a left closing member 72A as a second closing member, and the right vent hole 70B is closed by a right closing member 72B as a first closing member. 72A and the right closing member 72B have the same outer diameter and the same material.

  Here, in this embodiment, the breaking strength of the right tear seam 74B for closing the right vent hole 70B with the right closing member 72B, and the breaking strength of the left tear seam 74A for closing the left vent hole 70A with the left closing member 72A. Set higher than. In addition, the method of tuning the breaking strength of the left and right tear seams 74 is a method of using different thread strengths, the same thread strength, single stitching on the left side, and double sewing on the right side. A method or a method of changing the pitch of the seam can be applied.

(Action / Effect)
According to the above configuration, the right tear seam 74B has a higher breaking strength than the left tear seam 74A. Therefore, when the upper body of the occupant is received by the left airbag 44 and the right airbag 46, the tear seam 74A of the left airbag 44 This breaks before the tear seam 74B of the right airbag 46. For this reason, the closed state of the left vent hole 70A by the left closing member 72A is released first, and then the closed state of the right vent hole 70B by the right closing member 72B is released. As a result, the restraining force of the occupant by the right airbag 46 is higher than the restraining force of the occupant by the left airbag 44. Therefore, when the restraining force by the shoulder-side webbing 54B is combined, the left-right difference in restraining force acting on both shoulders of the occupant is substantially eliminated. That is, according to the present embodiment, it is possible to reduce as much as possible the left-right difference between the restraining forces acting on the shoulders of the occupant without reducing the overall restraining force.

  Further, in the present embodiment, the left vent hole 70A and the right vent hole 70B are closed until the passenger's upper body comes into contact with the passenger seat airbag 32, so that the vent hole is opened from the beginning. Compared to the above, the number of parts increases, but the deployment completion time of the passenger seat airbag 32 can be shortened.

[Third Embodiment]
Next, a third embodiment of a passenger seat occupant restraint device according to the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  FIG. 7 shows a perspective view of the inflator 80 according to the main part of the present embodiment. The inflator 80 is configured as an integrated unit by welding the bottom surfaces of two inflators. The amount of gas generated from the gas injection hole 82B of the right inflator 80B that supplies gas into the right airbag 46 is larger than the amount of gas generated from the gas injection hole 82A of the left inflator 80A that supplies gas into the left airbag 44. It is set to increase.

  Supplementally, as described in the first embodiment, the left airbag 42 is set to have a capacity smaller than that of the right airbag 44 in accordance with the curved surface shape of the windshield glass 18. Even if there is no difference in reaction force received by the upper body of the occupant from the right airbag 46 and the right airbag 46 (the same bag inflation pressure is applied to the left and right), the amount of gas supplied from the left inflator 80A is supplied from the right inflator 80B. In this embodiment, the right inflator 80B is more than the amount of gas generated from the left inflator 80A in order to eliminate the left / right difference in restraining force received by the upper body of the occupant. This means that the amount of gas generated is intentionally changed so as to increase.

  When this configuration is used, the opening area of the right opening 40 and the left opening 42 of the diffuser 36 may be the same.

(Action / Effect)
According to the above configuration, when a frontal collision occurs, the left inflator 80A and the right inflator 80B are simultaneously operated, and the gas generated from the left inflator 80A is supplied into the left airbag 44, and the gas generated from the right inflator 80B is The air bag 46 is supplied.

  Here, since the gas generation amount (output) of the right inflator 80B is set to be higher than the gas generation amount (output) of the left inflator 80A, the reaction force that the left shoulder of the occupant receives from the left airbag 44 is set. The reaction force that the occupant's right shoulder receives from the right airbag 46 becomes higher. For this reason, the restraining force of the occupant by the right airbag 46 is higher than the restraining force of the occupant by the left airbag 44. Therefore, when the restraining force by the shoulder-side webbing 54B is combined, the left-right difference in restraining force acting on both shoulders of the occupant is substantially eliminated. That is, according to the present embodiment, it is possible to reduce as much as possible the left-right difference between the restraining forces acting on the shoulders of the occupant without reducing the overall restraining force.

[Fourth Embodiment]
Next, a fourth embodiment of a passenger seat occupant restraint device according to the present invention will be described with reference to FIGS. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  FIG. 8 is an exploded perspective view of the airbag module 14 excluding the passenger seat airbag 32. FIG. 9 is a system configuration diagram of the passenger seat occupant restraint device according to the present embodiment.

  As shown in these drawings, in this embodiment, an opening 92 is formed at the center of the main body 90A of the diffuser 90. At the opening position of the opening 92, a substantially semicircular moving body 94 is disposed so as to be slidable in the direction of arrow Q in FIG. An end portion 94 </ b> A in the front-rear direction of the moving body 94 is slidably fitted into a U-shaped guide 96 formed by bending at the front and rear flange portions 90 </ b> B of the diffuser 90. Further, a base end portion 98A of the rack bar 98 is fixed to the flange portion 94A on the rear side of the moving body 94 by welding or the like. Further, the front end portion 98B of the rack bar 98 passes through a rectangular opening 100 formed in the outer side wall portion 22C of the airbag case 22, and protrudes a predetermined amount outside the side wall portion 22C.

  Correspondingly, a motor 104 is attached to the outer side wall portion 22 </ b> C of the airbag case 22 via a bracket 102. A pinion 106 is fixed to the tip of the output shaft of the motor 104 by press-fitting or the like. The teeth of the pinion 106 mesh with the rack teeth of the rack bar 98.

  Further, as shown in FIG. 9, a pair of left and right front airbag sensors 110 are disposed at the front end portion of the vehicle 108. On the lower side of the center console box, an airbag ECU 112 (control means) is disposed, and left and right front airbag sensors 110 are connected to each other. A center airbag sensor (not shown) is also provided inside the airbag ECU 112. Further, the airbag ECU 112 is also connected to the inflator 116 of the driver seat airbag device 114 and the inflator 28 of the passenger seat airbag device 10. In addition, the airbag ECU 112 is also connected to the motor 104 described above. The seat cushion of the passenger seat 30 is provided with a pressure sensor type seating sensor 118 for detecting the presence or absence of a passenger on the passenger seat 30. Further, a buckle switch 120 is disposed on the buckle device 64 disposed on the inner side of the passenger seat 30. The seating sensor 118 and the buckle switch 120 are also connected to the airbag ECU 112. In addition to the seating sensor 118, an ultrasonic sensor, an imaging camera, or the like is also applicable.

(Action / Effect)
A control method of the passenger seat occupant restraint device according to the present embodiment will be described with reference to the flowchart shown in FIG.

  First, in step 150, it is determined whether or not the occupant is seated on the seat cushion of the passenger seat 30 and the seating sensor 118 is turned on. If the determination in step 150 is negative, this determination is repeated. If the determination is positive, the process proceeds to step 152 to determine whether or not the buckle switch 120 is turned on. That is, it is determined whether or not the occupant has engaged the tongue plate 62 with the buckle device 64 and the three-point seat belt device 52 is in the webbing wearing state.

  Next, when the result in step 152 is affirmative, that is, when the occupant is in the webbing state, the process proceeds to step 154, and the moving body 94 is held at the initial position (the position shown in FIG. 8). In this state, the moving body 94 is moving outward in the vehicle width direction, and the opening area of the right opening 40 is larger than that of the left opening 42 as in the first embodiment described above. When a frontal collision occurs in this mode, a frontal collision is detected by the left and right front airbag sensors 110 and the center airbag sensor, and the airbag ECU 112 determines that the airbag is operating. As a result, a predetermined current is supplied to the ignition device of the inflator 28 of the passenger airbag device 10 and the inflator 28 is activated. As a result, gas is ejected from the inflator 28, and the passenger seat airbag 32 is inflated and deployed. When the passenger airbag 32 is inflated and deployed in this mode, the reaction force received by the occupant's right shoulder from the right airbag 46 is higher than the reaction force received by the occupant's left shoulder from the left airbag 44. As a result, when the restraining force by the shoulder-side webbing 54B is taken into account, the restraining force balanced on the left and right acts on both shoulders of the occupant.

  On the other hand, if the determination in step 152 is negative, the passenger is seated in the passenger seat 30 but is not yet in the webbing state, so the routine proceeds to step 156 and the motor 104 is driven forward. As a result, the pinion 106 fixed to the output shaft of the motor 104 rotates and moves the rack bar 98 inward in the vehicle width direction by a predetermined stroke. For this reason, the moving body 94 fixed to the rack bar 98 moves inward in the vehicle width direction and is positioned substantially at the center. As a result, the opening areas of the right opening 40 and the left opening 42 are substantially the same, and the reaction forces received by the shoulders of the occupants from the left airbag 44 and the right airbag 46 are substantially equal to each other. It is said.

  Thereafter, the routine proceeds to step 158, where it is determined whether or not the passenger has got off the vehicle. If the determination is affirmative, the process ends. If the determination is negative, the process returns to step 152. Note that whether or not the passenger has got off is determined by whether or not the buckle switch 120 is turned off and then the seating sensor 118 is turned off.

  As described above, in the control method of the passenger seat occupant restraint device according to the present embodiment, in the unlikely event that the occupant seated on the passenger seat 30 is not wearing the webbing, the restraining force by the webbing 54B on the shoulder side can be obtained. Therefore, in this case, both shoulders of the occupant are received with substantially the same pressure so that the reaction force applied to the occupant's shoulders is not unbalanced. As a result, according to the present embodiment, even if the occupant seated in the passenger seat 30 does not wear the webbing 54, the occupant can be appropriately protected.

  Further, according to the present embodiment, the control is to change the gas supply amount (depending on whether the occupant is wearing the webbing), so that the actuator (moving body) is in a stage before the passenger seat airbag device 10 is activated. 94) can be completed. Therefore, stable control becomes possible.

  In the present embodiment, a configuration is adopted in which the position of the moving body 94 of the diffuser 90 that determines the gas supply amount to the left airbag 44 and the right airbag 46 is made variable. Also, another element can be used as the gas supply / exhaust amount changing means. For example, the vent hole that determines the gas exhaust amount may be activated to control the variable vent hole that can change the opening area of the exhaust port. As an example, the variable vent hole can be provided in the airbag case. For example, it is possible to provide a closing member that can be controlled to open and close by making the inside of the airbag case a left-right separate structure and forming openings on the wall surfaces of the left and right chambers.

[Supplementary explanation of the above embodiment]
The “frontal collision” in the present invention includes a case where the vehicle actually collides with the front, and a frontal collision is predicted by a millimeter wave radar or the like disposed at a position on the back side of the front bumper grill. It is also included.

  Further, in each of the above-described embodiments, the left-side airbag 44 and the right-side airbag 46 are separately configured so that the left-right separation type airbag 32 for the passenger seat is used. The airbag itself may have a configuration in which the interior of the airbag is partitioned into left and right by providing a partition member that partitions the interior space into the left and right within the bag.

It is a rear view of the state which the airbag apparatus for passenger seats concerning 1st Embodiment act | operated. It is a disassembled perspective view of the components (except for the passenger seat airbag) constituting the module of the passenger seat airbag device according to the first embodiment. It is a longitudinal cross-sectional view which shows the state which the airbag apparatus for passenger seats which concerns on 1st Embodiment act | operates, and the airbag for passenger seats expand | deployed. 1 is a longitudinal sectional view of a passenger seat airbag device equipped with a passenger seat airbag according to the embodiment in a vehicle-mounted state. It is a graph in which time is taken on the horizontal axis and reaction force (load) applied to the occupant is taken on the vertical axis. It is a front view of the state which the airbag apparatus for passenger seats concerning 2nd this embodiment act | operated. It is a perspective view which expands and shows the inflator which is the principal part of the airbag apparatus for passenger seats concerning 3rd this embodiment. It is a disassembled perspective view of the components (except for the passenger seat airbag) constituting the module of the passenger seat airbag device according to the fourth embodiment. It is a system block diagram which shows the control system of the passenger seat passenger | crew restraint apparatus which concerns on 4th Embodiment. It is a flowchart which shows the control method of the passenger seat passenger | crew restraint apparatus which concerns on 4th Embodiment.

Explanation of symbols

10 Airbag device for passenger seat (passenger restraint device for passenger seat)
28 Inflator (gas supply means)
30 Passenger seat 32 Passenger seat airbag 36 Diffuser (rectifier)
40 Right side opening (first distribution opening)
42 Left side opening (second distribution opening)
44 Left airbag (outer airbag)
46 Right airbag (inner airbag)
50A Left vent hole (second exhaust port)
50B Right vent hole (first exhaust port)
52 Seatbelt device (passenger restraint system for passenger seat)
54 Webbing 54B Shoulder side webbing 70A Left vent hole (second exhaust port)
70B Right vent hole (first exhaust port)
72A Left closing member (second closing member)
72B Right closing member (first closing member)
74A tear seam 74B tear seam 80 inflator (gas supply means)
90 diffuser (reaction force changing means, gas supply / exhaust amount changing means)
98 rack bar (reaction force changing means, gas supply / exhaust amount changing means)
104 motor (reaction force changing means, gas supply / exhaust amount changing means)
106 pinion (reaction force changing means, gas supply / exhaust amount changing means)
118 Seating sensor (occupant seating detection means)
120 Buckle switch (webbing wearing detection means)

Claims (11)

An outer airbag provided corresponding to a shoulder positioned on the outer side in the vehicle width direction of an occupant seated in the passenger seat, and an inner airbag provided corresponding to the shoulder positioned on the inner side in the vehicle width direction of the occupant. A passenger-seat airbag device, comprising: a passenger-seat airbag comprising: a gas supply means for supplying gas to the passenger-seat airbag at the time of a frontal collision;
A three-point seat belt device provided on the passenger side with a webbing for restraining the passenger,
A passenger seat occupant restraint device comprising:
From the inner airbag at the time of a frontal collision, the restraining force that acts on both shoulders of the occupant, including the restraining force that acts on the shoulder located on the outer side of the occupant in the vehicle width direction from the webbing on the shoulder side during the frontal collision, is substantially equal. The reaction force received by the shoulder located on the inner side of the occupant in the vehicle width direction is set to be higher than the reaction force received by the shoulder located on the outer side of the occupant in the vehicle width direction from the outer airbag.
A passenger seat occupant restraint device characterized by that. An outer airbag provided corresponding to a shoulder positioned on the outer side in the vehicle width direction of an occupant seated in the passenger seat, and an inner airbag provided corresponding to the shoulder positioned on the inner side in the vehicle width direction of the occupant. A passenger-seat airbag device, comprising: a passenger-seat airbag comprising: a gas supply means for supplying gas to the passenger-seat airbag at the time of a frontal collision;
A three-point seat belt device provided on the passenger side with a webbing for restraining the passenger,
A passenger seat occupant restraint device comprising:
Inner air acting on the shoulder located on the inner side of the occupant in the vehicle width direction, and the sum of the restraining force of the shoulder side webbing acting on the shoulder located on the outer side of the occupant in the vehicle width direction and the restraining force of the outer airbag The reaction force received by the shoulder located inside the occupant in the vehicle width direction from the inner airbag during the frontal collision is located outside the occupant in the vehicle width direction from the outer airbag so that the restraining force by the bag is substantially equal. Set to be higher than the reaction force the shoulder receives,
A passenger seat occupant restraint device characterized by that. The outer airbag and the inner airbag are separated from each other so that gas does not flow between each other,
The passenger seat occupant restraint device according to claim 1 or 2 , characterized in that The outer airbag and the inner airbag are respectively formed with exhaust ports, and the opening area of the first exhaust port formed in the inner airbag is larger than that of the second exhaust port formed in the outer airbag. Set smaller than the opening area,
The passenger seat occupant restraint device according to any one of claims 1 to 3, wherein the passenger seat occupant restraint device is provided. The outer airbag and the inner airbag are each formed with an exhaust port, and the exhaust port is closed by a closing member attached by a tear seam, thereby closing the first exhaust port formed in the inner airbag. The tear strength of the tear seam of the first closing member is set higher than the tear strength of the tear seam of the second closing member that closes the second exhaust port formed in the outer airbag.
The passenger seat occupant restraint device according to any one of claims 1 to 3, wherein the passenger seat occupant restraint device is provided. The outer airbag and the inner airbag are each formed with an exhaust opening having the same opening area, and the exhaust opening is closed by a closing member attached by a tear seam, and is formed in the inner airbag. The breaking strength of the tear seam of the first closing member that closes the first exhaust port is set higher than the breaking strength of the tear seam of the second closing member that closes the second exhaust port formed in the outer airbag. ing,
The passenger seat occupant restraint device according to any one of claims 1 to 3, wherein the passenger seat occupant restraint device is provided. Distributing that is provided on the inlet side of the gas supply path from the gas supply means to the outer airbag and the inner airbag and distributes the gas supplied from the gas supply means to each of the outer airbag and the inner airbag. A rectifying means having an opening formed therein;
The opening area of the first distribution opening for supplying gas to the inner airbag is set larger than the opening area of the second distribution opening for supplying gas to the outer airbag.
The passenger seat occupant restraint device according to any one of claims 1 to 3, wherein the passenger seat occupant restraint device is provided. The gas supply means is configured to be able to change a gas supply amount to the outer airbag and a gas supply amount to the inner airbag.
The passenger seat occupant restraint device according to any one of claims 1 to 3, wherein the passenger seat occupant restraint device is provided. The gas supply means is configured by integrating two gas supply means having different outputs.
The passenger seat occupant restraint device according to claim 8. It is applied to the passenger seat occupant restraint device according to any one of claims 1 to 3 ,
Occupant seating detection means for detecting whether or not an occupant is seated in the passenger seat;
Webbing wearing detection means for detecting whether or not the passenger seated in the passenger seat has worn the webbing;
A reaction force changing means for relatively changing a reaction force received by the occupant from the outer airbag and a reaction force received by the occupant from the inner airbag;
Have
When the occupant seating detection means detects that the occupant is seated in the passenger seat and the webbing attachment detection means detects the occupant's webbing, the reaction force received by the occupant from the inner airbag at the time of a frontal collision is more outward. Controlling the reaction force changing means to be higher than the reaction force received by the occupant from the airbag,
When it is detected by the occupant seating detection means that the occupant is seated in the passenger seat and the webbing attachment detection means does not detect the occupant's webbing, the reaction force received by the occupant from the inner airbag and the outer air Controlling the reaction force changing means so that the reaction force received by the occupant from the bag is substantially equal;
A control method for a passenger-seat occupant restraint device. The reaction force changing means can change a gas supply amount sent from the gas supply means to the inner airbag and the outer airbag or a gas exhaust amount exhausted from the inner airbag and the outer airbag to the outside of the airbag. Is a gas supply / exhaust amount changing means,
The method of controlling a passenger seat occupant restraint device according to claim 10 .

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