JP5291998B2 - Side airbag device - Google Patents

Description

  The present invention relates to a side airbag device in which an airbag is deployed and inflated on the side of a passenger.

  In general, when a side airbag device is subjected to an impact of a predetermined value or more on the body side portion of the vehicle due to a collision (side collision) from the side of the vehicle, the airbag is deployed and inflated on the side of the passenger, By easing the impact on the passenger, the chest or waist of the passenger is protected. Conventionally, there is, for example, Patent Document 1 as a document relating to such a side airbag device.

  According to Patent Document 1, as a conventional technique of such a side airbag device, a belt-like tether for connecting a front end edge and a rear end edge in the airbag is provided in the airbag, and the longitudinal direction of the tether is provided. It is said that a part that is broken and overlapped in a loop shape with a predetermined width, and a part to be broken is formed by sewing the overlapped portion.

  The side airbag device suppresses the expansion width of the airbag in the longitudinal direction of the automobile and increases the lateral width of the airbag in the lateral direction of the automobile by the tension of the tether when the airbag is deployed and inflated. In this case, when the pressure inside the airbag is increased and the fractured portion of the tether is broken, the tether is further stretched to The bulge width in the direction increases and the bulge width of the airbag in the lateral direction of the automobile decreases, thereby reducing the pressing force on the passenger of the airbag.

Therefore, in the side airbag device proposed in Patent Document 1, regardless of the size of the occupant's physique, the deployment and inflation behavior of the airbag is suppressed by a change in tension when the airbag is deployed. In view of a certain point, in order to further effectively protect the passenger according to the physique of the passenger, a part of the bulging amount of the airbag in the front-rear direction depends on the tension of the tether according to the physique of the passenger. Thus, the bulge amount is changed in the left-right direction (automobile lateral direction).
JP 2007-30791 A

  However, the side airbag device proposed in Patent Document 1 regards the physique of the occupant as a difference in size in the lateral direction as well as the occupant's front-rear direction. It can be said that it is configured to change in the lateral direction of the automobile together with the longitudinal direction of the automobile.

  However, the physique difference of the occupant not only appears as a difference between the anteroposterior direction and the lateral direction of the occupant, but also occurs in the vertical direction, that is, the vertical direction of the automobile due to the height difference. Therefore, it is desirable to develop a side airbag device that is adapted to capture and protect the entire occupant with a more suitable internal pressure due to the height difference.

  Therefore, the present invention is configured so that the amount of inflation of the airbag is changed in the vertical direction of the automobile in accordance with the height difference in height of the occupant. Another object of the present invention is to provide a side airbag device capable of effectively protecting a passenger.

Side air bag device according to the present invention, the pressure of the gas injected from the inflator, an air bag is deployed and inflated between the occupant seated on the body side portion and the vehicle interior of the seat of a motor vehicle Rutotomoni, wherein By adjusting the expansion adjustment means provided on the airbag and adjusting the expansion of the airbag in the upward direction of the automobile when the airbag is deployed and inflated, and adjusting the open / closed state of the vent hole formed in the airbag An opening / closing adjustment means for adjusting an internal pressure of the airbag when the airbag is deployed and inflated, a physique detection means for detecting the physique of the occupant, and the physique of the occupant detected by the physique detection means in advance When the height is smaller than the set reference height, the expansion adjusting means is controlled so that the airbag is prevented from expanding in the upward direction, and the vent hole is controlled. When the opening / closing adjustment means is controlled to be in an open state, and the physique of the occupant detected by the physique detection means is equal to or greater than a preset reference height, the airbag is inflated in the upward direction of the automobile. controls the inflation adjustment means as is promoted, the side air bag device and a control means for the vent hole to control the opening and closing adjustment means so that the closed state, before Symbol airbag A baffle having a through-hole penetrating the dividing chamber above the automobile and the dividing chamber below the automobile is provided to partition the dividing chamber above the automobile and the dividing chamber below the automobile; and inflation adjustment lid member for covering the through hole of the baffle, having the lid member to the inflation adjustment tether having one end connected, said opening adjustment means, for opening and closing adjustment covering the vent hole And an opening / closing adjustment tether having one end connected to the lid member, and the control means is detachably connected to the other end of each of the expansion adjustment tether and the opening / closing adjustment tether. When the physique of the occupant detected by the detecting means is smaller than a preset reference height, the inflation adjustment tether at the time of inflation deployment of the airbag is released by disconnecting the other end of the inflation adjustment tether. By suppressing the tension of the air bag and maintaining the cover of the through hole by the expansion adjustment lid member, the expansion of the airbag in the upward direction of the automobile is suppressed and the other end of the opening / closing adjustment tether is connected. By releasing, the tension of the opening / closing adjustment tether when the airbag is inflated and deployed is invalidated, and the cover of the vent hole by the inflation adjustment lid member is released. When the physique of the occupant detected by the physique detection means is equal to or greater than a preset reference height, the inflation adjustment at the time of inflation deployment of the airbag is maintained by maintaining the connection of the other end of the inflation adjustment tether. The cover of the through-hole by the expansion adjustment lid member is released by the tension of the tether for use, the inflation of the airbag in the upward direction of the automobile is promoted, and the connection of the other end of the open / close adjustment tether is maintained. Thus, the cover of the vent hole by the inflation adjustment lid member is maintained by the tension of the opening / closing adjustment tether when the airbag is inflated and deployed .

  According to the present invention, by maintaining or releasing the connection between the expansion adjustment means, the opening / closing adjustment means, and the control means, the amount of expansion of the airbag in the upward direction of the vehicle is adjusted, so that it depends on the height of the passenger. In view of the fact that the height difference occurs in the vertical direction of the vehicle, it is possible to effectively protect the height according to the height difference due to the height of the passenger.

  In one aspect of the side airbag device according to the present invention, the inflation adjustment means includes an inflation adjustment tether having one end connected to the upper side of the airbag of the automobile, and the opening / closing adjustment means includes the vent hole. A lid member for covering, and an opening / closing adjustment tether having one end connected to the lid member, and the control means is detachably connected to the other ends of the expansion adjustment tether and the opening / closing adjustment tether, When the physique of the occupant detected by the physique detection means is smaller than a preset reference height, the inflation adjustment at the time of inflation deployment of the airbag is maintained by maintaining the connection of the other end of the inflation adjustment tether. The airbag is restrained from being expanded in the upward direction by the tension of the tether, and the connection of the other end of the opening / closing adjustment tether is maintained. The expansion adjustment is performed when the cover of the vent hole by the lid member is released by the tension of the opening / closing adjustment tether during deployment, and the physique of the occupant detected by the physique detection unit is equal to or greater than a preset reference height. By releasing the connection of the other end of the tether, the tension of the inflation adjustment tether at the time of inflating and deploying the airbag is nullified, the inflation of the airbag in the upward direction of the automobile is promoted, and the opening and closing adjustment By releasing the connection of the other end of the tether, the tension of the opening / closing adjustment tether when the airbag is inflated and deployed is nullified, and the cover of the vent hole by the lid member is maintained.

  According to one aspect of the side airbag device according to the present invention, the expansion amount of the airbag in the upward direction of the automobile is reduced by maintaining or releasing the connection between the expansion adjustment tether and the opening / closing adjustment tether and the control means. Can be adjusted.

  In one aspect of the side airbag device according to the present invention, the airbag penetrates the dividing chamber above the automobile and the dividing chamber below the automobile, which divides the dividing chamber above the automobile and the dividing chamber below the automobile. A baffle having a through hole formed therein, and the expansion adjusting means includes an expansion adjustment lid member that covers the through hole of the baffle, and an expansion adjustment tether having one end connected to the lid member, The opening / closing adjustment means includes an opening / closing adjustment lid member that covers the vent hole, and an opening / closing adjustment tether having one end connected to the lid member, and the control means includes the expansion adjustment tether and the opening / closing adjustment tether. When the occupant's physique detected by the physique detection means is smaller than a preset reference height, the other end of the expansion adjustment tether is disconnected. By disabling the tension of the inflation adjustment tether when the airbag is inflated and deployed, and maintaining the cover of the through hole by the inflation adjustment lid member, the airbag is directed upward in the automobile. While suppressing the expansion and releasing the connection of the other end of the opening / closing adjustment tether, the tension of the opening / closing adjustment tether when the airbag is inflated and deployed is nullified, and the vent by the expansion adjustment lid member When the occupant's physique detected by the physique detection means is equal to or higher than a preset reference height, the connection of the other end of the inflation adjustment tether is maintained by releasing the cover of the hole, Due to the tension of the inflation adjustment tether during inflation and deployment, the cover of the through hole by the inflation adjustment lid member is released, and the airbag is inflated upward. By promoting and maintaining the connection of the other end of the opening / closing adjustment tether, the cover of the vent hole by the expansion adjustment lid member is maintained by the tension of the opening / closing adjustment tether when the airbag is inflated and deployed. It is characterized by.

  According to one aspect of the side airbag device according to the present invention, the expansion amount of the airbag in the upward direction of the automobile can be reduced by maintaining or releasing the connection between the expansion adjustment means, the opening / closing adjustment means, and the control means. By adjusting, considering that the height difference due to the height of the occupant is generated in the upward direction of the vehicle, it is possible to effectively protect the height according to the height difference due to the height of the occupant.

  According to the present invention, since the internal pressure of the airbag and the amount of expansion in the upward direction of the automobile are adjusted according to the physique of the occupant, even if the physique difference of the occupant occurs in the upward direction of the occupant, It is possible to provide a side airbag device that can effectively protect a passenger regardless of the disparity.

  The best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described below with reference to the drawings. In the following description, when the “front-rear direction” is referred to, the traveling direction (forward direction) of the automobile is assumed to be the front (front of the automobile). Further, when referring to the “vertical direction” and the “left-right direction”, unless otherwise specified, the vertical direction and the left-right direction are assumed when the traveling direction of the automobile is the front.

  FIG. 1 is a schematic side view when an airbag is inflated and deployed to fit a passenger having a relatively high height in the side airbag device according to the present embodiment applied to a front seat of an automobile, and FIG. Similarly, FIG. 3 is a schematic side view when the airbag is inflated and deployed so as to be adapted to a passenger with a relatively low height, and FIG. 3 is a tether belt latching device constituting the side airbag device in the operating state shown in FIG. FIG. 4 is a partial side view of a tether belt latching device constituting the side airbag device in the operating state shown in FIG. 2.

  FIG. 1 shows a front seat 21 for a driver's seat among the seats arranged in the vehicle interior. The front seat 21 is disposed on a rail 22 that extends in the front-rear direction provided on the floor surface in the vehicle interior, and can slide on the rail 22 in the front-rear direction. The rail 22 is provided with a seat position sensor 23 that detects the position of the front seat 21 on the rail 22.

  The front seat 21 includes a seat portion 21a and a backrest portion 21b, and the right side of the backrest portion 21b (in the case of a right-hand drive vehicle) corresponds to a door (not shown) that constitutes a part of the body side portion of the automobile. As described above, the side airbag device 24 is embedded in a state accommodated in the case 25. Although the drawings show the case where the present invention is applied to the front seat 21 for the right driver's seat, the present invention is not limited to this, and the same front side seat for the left passenger seat (passenger seat) or the rear seat. The airbag device 24 can be applied, and can also be applied to a left-hand drive vehicle.

  The side airbag device 24 includes an inflator 26 as a gas generation source fixed at the center in the vertical direction of the case 25, and an airbag 27 that is inflated and deployed by the gas pressure generated by the inflator 26. Inside the inflator 26, a gas generating agent (not shown) for generating a gas necessary for deploying and inflating the airbag 27 is accommodated. A gas injection port 26 a for injecting a gas generated from a gas generating agent (not shown) into the airbag 27 is provided at the lower end of the inflator 26, and the gas injection port 26 a is opened in the airbag 27. It has become. The airbag 27 is formed so as to form a bag shape as a whole by folding a single base fabric made of woven fabric and sewing it along the periphery thereof, and is normally folded. And accommodated in the case 25.

  Further, the side airbag device 24 includes a single latching device 28 that is fixed to the case 25 and disposed in the airbag 27. The latching device 28 is fixed to the case 25 together with the inflator 26 via a pedestal 25a.

  As shown in FIGS. 3 and 4, the latch device 28 includes an actuator 31 having a main body case 31 a and a rod 31 b that is slidably held by the main body case 31 a. One end of the rod 31b protruding outside the main body case 31a slides and is drawn into the main body case 31a.

  Further, the side airbag device 24 according to the present embodiment includes a belt-shaped inflation adjustment tether 30 as an inflation adjustment means for adjusting the inflation of the airbag 27 in the upward direction of the automobile above the automobile inside the airbag 27. One end portion 30a is sewn. Further, the airbag 27 is formed with a vent hole 40 for releasing the gas in the airbag 27 to the outside.

  In addition, a lid cloth 40a is sewn inside the airbag 27 so as to close the vent hole 40, and one end 50a of the opening / closing adjustment tether 50 is sewn to the lid cloth 40a. Here, the lid cloth 40a and the opening / closing adjustment tether 50 are configured as opening / closing adjustment means for adjusting the opening / closing of the vent hole 40.

  Further, the other end portions 30b, 50b of the expansion adjustment tether 30 and the opening / closing adjustment tether 50 are detachably attached to the rod 31b of the latching device 28 via the latching members 32, 52, respectively.

  In this embodiment, when the passenger P is smaller than the reference height, the other end portions 30b and 50b of the expansion adjustment tether 30 and the opening / closing adjustment tether 50 are connected to the rod 31b of the latching device 28 as shown in FIG. Deployment and inflation of the airbag 27 is started while the connected state is maintained.

  At this time, the inflation of the airbag 27 in the upward direction of the automobile is suppressed by the tension of the inflation adjustment tether 30 when the airbag 27 is deployed and inflated. Further, due to the tension of the opening / closing adjustment tether 50 when the airbag is deployed and inflated, the lid cloth 40a is peeled off from the airbag 27, the vent hole 40 is opened, and the gas in the airbag 27 is released to the outside through the vent hole 40. Released. In this way, when the passenger P is smaller than the reference height, the tension of the tethers 30 and 50 when the airbag 27 is deployed and inflated suppresses the inflation of the airbag 27 in the upward direction of the automobile, and It is developed with an amount smaller than the expansion amount and a lower internal pressure.

  On the other hand, when the passenger P is not less than the reference height, as shown in FIGS. 1 and 3, the rod 31b of the latching device 28 is immersed in the main body case 31a, and the other end portions 30b and 30b and the rod of the latching device 28 are inserted. Deployment and inflation of the airbag 27 is started in a state in which the connection with 31b is released. At this time, the tension of the inflation adjustment tether 30 during the deployment and inflation of the airbag 27 is not exhibited, and the amount of inflation of the airbag 27 in the upward direction of the automobile increases. Note that the timing of releasing the connection between the other end portions 30b, 30b and the rod 31b of the latching device 28 may be after a predetermined time has elapsed since the deployment of the airbag 27 is started.

  Further, the tension of the opening / closing adjustment tether 50 at the time of inflation and expansion of the airbag is not exhibited, and the state where the cover cloth 40a is sewn to the airbag 27, that is, the state where the cover cloth 40a covers the vent hole 40 is maintained. The gas in the airbag 27 is not released to the outside through the vent hole 40. As described above, when the passenger P is not less than the reference height, the tension of the tethers 30 and 50 when the airbag 27 is deployed and inflated is not exerted. The airbag 27 is deployed with the original amount of inflation and a higher internal pressure.

  Thus, according to the present embodiment, the other ends 30b, 30b of the expansion adjustment tether 30 and the opening / closing adjustment tether 50 and the rod 31b of the latching device 28 are connected according to the physique of the passenger P. By maintaining or releasing, the amount of inflation of the airbag 27 in the upward direction of the automobile is adjusted. Therefore, even when the physique difference of the passenger appears as a height difference that occurs in the upward direction of the automobile, the passenger can be effectively protected according to the physique difference of the passenger.

  Next, the electrical configuration of the side airbag device 24 will be described.

  As shown in FIG. 5, the side airbag device 24 includes a control unit 34. The control unit 34 includes an impact sensor 35 that detects an impact on the body side portion of the automobile, a seat position sensor 23, an inflator 26, and the like. The latching device 28 is electrically connected to each other. The control unit 34 determines whether or not the height difference of the passenger P seated on the front seat 21 is greater than or equal to a predetermined reference height by inputting a signal from the seat position sensor 23 based on the position of the front seat 21. It is supposed to be.

  When the amount of slide movement from the front most of the front seat 21 (the position when the front seat 21 is moved to the maximum forward) is less than a predetermined value (for example, 60 mm), the control unit 34 Judging that he is smaller than his height. The determination as to whether or not the physique of the passenger P in the present embodiment is smaller than the standard height is a physique equivalent to a 50 percent tile adult male of the United States (equivalent to a physique (AM50) of 175 cm tall and 75 kg in weight), The boundary condition is an intermediate (average) with a physique (height 160 cm, weight 50 kg physique (AF05)) equivalent to an American 5% tile adult woman. Further, in this embodiment, the seat position sensor 23 and the control unit 34 A physique detection means is configured.

  Next, operation | movement of the side airbag apparatus 24 which concerns on this embodiment is demonstrated.

  When an impact of a predetermined value or more is applied to the body side part due to a collision by another automobile with the body side part of the automobile, the control unit 34 outputs a drive current to the inflator 26 based on a detection signal from the impact sensor 35. To do. Simultaneously with the output of the drive current, the control unit 34 determines the physique of the occupant P based on the detection signal from the seat position sensor 23, and if it is determined that the physique of the occupant P is equal to or higher than the reference height, The drive current to the stop device 28 is output.

  The latch device 28 receives the drive current, and the actuator 31 operates. By the operation of the actuator 31, one end portion of the rod 31b protruding outside the main body case 31a slides and is drawn into the main body case 31a, and the other end portions 30b and 50b of the expansion adjustment tether 30 and the opening / closing adjustment tether 50 are drawn. And the rod 31b are disconnected.

  And by heating based on the drive current output with respect to the inflator 26, gas is generated from the gas generating agent in the inflator 26, and gas is injected into the airbag 27 from the gas injection port 26a. 27 expands and expands.

  At this time, since the latching state of the rod 31b of the actuator 31 of the latching device 28 and the tethers 30 and 50 is released, the inflation amount of the airbag 27 in the upward direction of the vehicle is the original inflation amount of the airbag 27. As it is deployed, the vent hole is closed. Therefore, the passenger 27 having a physique equivalent to AM50 is effectively protected by the airbag 27.

  On the other hand, when outputting a drive current to the inflator 26, the control unit 34 determines the physique of the passenger P based on the detection signal from the seat position sensor 23, and the physique of the passenger P is smaller than the reference height. If it is determined, the drive current to the latching device 28 is not output. That is, the actuator 31 does not operate, and the connection between the rods 31b and the other end portions 30b, 50b of the expansion adjustment tether 30 and the opening / closing adjustment tether 50 is maintained.

  Thus, when the airbag 27 is inflated and deployed in the state where the other end portions 30b and 50b of each tether and the rod 31b are maintained, the tension of the tethers 30 and 50 at the time of deployment and inflation of the airbag 27 The expansion amount of the airbag 27 in the upward direction of the automobile is suppressed, and the airbag 27 is deployed with an amount smaller than the original expansion amount of the airbag 27 and a lower internal pressure. Therefore, the passenger 27 P having a physique equivalent to AF05 is effectively protected by the airbag 27.

  As described above, according to the present embodiment, the passenger can be effectively protected regardless of the height difference of the passenger regardless of the height.

  Then, the modification of the side airbag apparatus which concerns on this embodiment is demonstrated.

  FIG. 6 is a side view of the side airbag device according to the present modification when the airbag is not restrained from expanding in the upward direction of the vehicle, and FIG. 7 is a cross-sectional view taken along the line AA of the airbag shown in FIG. is there. FIG. 8 is a side view of the side airbag device according to the present modification when the airbag is prevented from being expanded in the upward direction. 9 is a cross-sectional view of the airbag shown in FIG. 7 taken along the line BB.

  In this modification, the airbag 27 is provided with a baffle 60 on the upper side of the vehicle, and a baffle 60 that divides a division chamber 27a above the vehicle and a division chamber 27b below the vehicle is provided. A penetrating portion 62 that penetrates the dividing chamber 27a above the automobile and the dividing chamber 27b below the automobile is formed. Further, before the airbag 27 is inflated and deployed, a hole blocking member 64 is sewn to the through portion 62 so as to cover a hole formed by the through portion 26. One end of a belt-like expansion adjustment tether 66 is sewn to the hole blocking member 64, and the other end of the expansion adjustment tether 66 is connected to an actuator of the latching device 28 via a latch member 68. Removably connected to the rod.

  A lid cloth 70 a is sewn to the vent hole 70 formed in the airbag 27 so as to close the vent hole 70. One end of a belt-shaped opening / closing adjustment tether 80 is sewn to the lid cloth 70a, and the other end of the opening / closing adjustment tether 80 is connected to the actuator rod of the latching device 28 via the latching member 82. It is detachably connected.

  In the present modification, the lower division chamber 27b is further divided by a baffle 60a and communicated by a through hole 62a.

In this modified example having such a configuration, when the passenger P is smaller than the reference height, the connection between the other end of the expansion adjustment tether 66 and the other end of the opening / closing adjustment tether 80 and the rod of the actuator 31 is released. The In this state, when the airbag 27 starts to be expanded and inflated, as shown in FIG. 8 , the closed state of the penetrating portion 62 is maintained by the hole blocking member 64, and the airbag 27 is prevented from expanding upward. The On the other hand, the lid cloth 70a sewn in the vent hole 70 does not exert the tension of the opening / closing adjustment tether 80 when the airbag 27 is inflated and deployed, and the portion of the lid cloth 70a sewn by the gas discharge pressure. Is broken, the vent hole 70 is opened, and the gas is released to the outside.

  On the other hand, when the passenger P is not less than the reference height, the connection between the other end of the expansion adjustment tether 66 and the other end of the opening / closing adjustment tether 80 and the rod of the actuator 31 is maintained. When the airbag 27 starts to be expanded and inflated in this state, the hole blocking member 64 is broken by the tension of the expansion adjustment tether 66, and the gas is released through the through portion 62 into the division chamber 27 a above the automobile of the airbag 27. Is done.

  On the other hand, the lid cloth 70a sewn in the vent hole 70 is maintained in the sewn state with the vent hole 70 by the tension of the opening / closing adjustment tether 80, and the release of gas to the outside is suppressed. That is, when the occupant P is more than the reference height, the connection between the other end of the expansion adjustment tether 66 and the other end of the opening / closing adjustment tether 80 and the rod of the actuator 31 is maintained. The expansion and deployment of 27 above the automobile is promoted.

  As described above, according to the present modification, the connection between the other end portions of the expansion adjustment tether 66 and the opening / closing adjustment tether 80 and the rod of the latching device 28 is maintained or released according to the physique of the passenger P. Thus, the amount of expansion of the airbag 27 in the upward direction of the automobile and the internal pressure are adjusted. Therefore, in the side airbag device according to the present modification, even when the physique difference in the height of the occupant occurs in the upward direction of the automobile, the passenger is effectively protected regardless of the physique difference of the occupant. Is possible.

  In the above-described embodiments and modifications, the side airbag device has been described by taking a so-called seat mount type incorporated in a front seat as an example. However, the side airbag device can be applied to, for example, a so-called door-mounted side airbag device incorporated in a door trim, in addition to being incorporated in the front seat.

  According to the present invention, the height of the occupant is adjusted by adjusting the amount of expansion of the airbag in the upward direction of the vehicle by maintaining or releasing the connection between the expansion adjustment means and the opening / closing adjustment means and the control means. In view of the disparity occurring in the upward direction of the automobile, side air provided with an airbag that expands and inflates between the body side portion of the automobile and the passenger seated on the seat in the passenger compartment due to the pressure of the gas injected from the inflator Ideal for bag devices.

In the side airbag device concerning this embodiment applied to the front seat of a car, it is a schematic side view at the time of inflating and deploying an airbag so that it may be suitable for a passenger who is relatively tall. Similarly, it is a schematic side view when the airbag is inflated and deployed so as to be adapted to a passenger having a relatively short height. It is the perspective view which drawn the state which mounted | wore the base with the latching device of the tether belt which comprises the side airbag apparatus in the operation state shown in FIG. FIG. 3 is a partial side view of a hooking device for a tether belt constituting the side airbag device in the operating state shown in FIG. 2. It is a block diagram which shows the electric constitution of the side airbag apparatus in embodiment. The side airbag apparatus which concerns on the modification of this invention is shown, It is a schematic side view at the time of inflating and deploying an airbag so that it may suit a passenger with comparatively high height. It is AA sectional drawing of FIG. Similarly, it shows a side airbag device according to a modification of the present embodiment, and is a schematic side view when the airbag is inflated and deployed so as to be adapted to a passenger having a relatively small height. It is BB sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Front seat 22 Rail 23 Seat position sensor 24 Side airbag apparatus 26 Inflator 27 Air bag 30 Expansion adjustment tether 31 Actuator 40 Vent hole 40a Lid cloth 50 Opening / closing adjustment tether 60 Baffle 62 Through-hole 64 Hole blocking member 66 For expansion adjustment Tether 70 Vent hole 80 Open / close adjustment tether

Claims (1)

The pressure of the gas injected from the inflator, Rutotomoni includes an airbag is deployed and inflated between the occupant seated on the body side portion and the vehicle interior of the seat of a motor vehicle, provided in the airbag, the airbag By adjusting the opening and closing state of a vent hole formed in the airbag by adjusting the expansion adjustment means for adjusting the upward expansion of the airbag when the airbag is expanded and inflated, the airbag at the time of deployment and expansion is adjusted. Open / close adjusting means for adjusting the internal pressure of the airbag;
When the physique detection means for detecting the physique of the passenger and the physique of the occupant detected by the physique detection means are smaller than a preset reference height, the inflation of the airbag in the upward direction of the automobile is suppressed. Controlling the expansion adjustment means, controlling the opening / closing adjustment means so that the vent hole is in an open state, and the physique of the occupant detected by the physique detection means is set in advance as a reference height In the above case, the control means for controlling the expansion adjustment means so as to promote the expansion of the airbag in the upward direction of the automobile, and for controlling the opening / closing adjustment means so that the vent hole is closed, in the side airbag apparatus provided with,
The front Symbol airbag, partitions the car upper divided rooms and automotive lower divided chamber, a baffle having a through hole formed to penetrate is provided a motor vehicle upper divided rooms and automotive lower divided chamber,
The expansion adjusting means has an expansion adjustment lid member that covers the through hole of the baffle, and an expansion adjustment tether having one end connected to the lid member,
The opening / closing adjustment means includes an opening / closing adjustment lid member that covers the vent hole, and an opening / closing adjustment tether having one end connected to the lid member,
The control means is detachably connected to the other ends of the expansion adjustment tether and the opening / closing adjustment tether, and the physique of the passenger detected by the physique detection means is smaller than a preset reference height By releasing the connection of the other end of the inflation adjustment tether, the tension of the inflation adjustment tether at the time of inflation deployment of the airbag is nullified, and the covering of the through hole by the inflation adjustment lid member is maintained. Thus, while suppressing expansion of the airbag in the upward direction of the automobile, the connection of the other end of the opening / closing adjustment tether is released, so that the tension of the opening / closing adjustment tether during inflation and deployment of the airbag is reduced. And the cover of the vent hole by the expansion adjustment lid member is released, and the physique of the passenger detected by the physique detection means is preset. If the height is equal to or greater than the height, maintaining the connection of the other end of the expansion adjustment tether allows the through hole of the expansion adjustment lid member to be adjusted by the tension of the expansion adjustment tether when the airbag is inflated and deployed. The tension of the opening / closing adjustment tether at the time of inflating and deploying the airbag is released by releasing the cover, accelerating the upward expansion of the airbag and maintaining the connection of the other end of the opening / closing adjustment tether. the side airbag device you and maintains the covering of the vent hole by the inflation adjustment lid member.