JP5476191B2 - Air belt device - Google Patents

Description

  The present invention relates to an air belt device in which a bag portion that is deployed and inflated is provided on a part of a seat belt, and relates to a device capable of restraining an occupant adapted to different collision modes such as a frontal collision and a side collision with a simple configuration.

For example, in a vehicle such as an automobile, an airbag apparatus that restrains an occupant with a bag that is inflated with a gas for deployment when a collision or a precursor thereof is detected and deployed and inflated is widely used.
In recent years, there has been proposed an air belt apparatus that is a kind of such an air bag apparatus, and that provides a bag portion in a part of a seat belt to improve occupant restraint.

  For example, in Patent Document 1, in a three-point seat belt for an automobile, a bag portion (wrap bag) is disposed on a lap belt portion that restrains a passenger's waist, and an inflator is disposed on an anchor portion that is attached to a vehicle pillar. An inflatable belt device is described.

JP 2007-161203 A

In the above-described inflatable belt device, it is required to increase the internal pressure of the bag portion at the time of a frontal collision of the vehicle to increase the tension of the seat belt and to suppress the forward movement of the occupant.
On the other hand, at the time of a side collision of the vehicle, it is required to restrain the occupant softly by lowering the internal pressure of the bag portion than at the time of the frontal collision.
In order to cope with the fact that the optimum internal pressure of the bag portion varies depending on the collision mode, for example, the pressure of the developing gas is changed by a variable inflator, or a variable vent hole that is opened and closed by an actuator is used. In this case, it is conceivable to remove the gas for development at the time of a side collision, but in this case, there is a concern that the number of parts of the apparatus increases and the structure becomes complicated.
In view of the above-described problems, an object of the present invention is to provide an air belt apparatus capable of restraining an occupant adapted to a collision mode with a simple configuration.

In order to solve the above-described problem, an air belt device according to the present invention includes a seat belt that restrains an occupant seated on a seat, a bag that is provided at a part of the seat belt and that is deployed and inflated by the pressure of a deployment gas, A collision detection device that detects a sign of a collision, a gas supply device that supplies the developing gas to the bag according to a detection result of the collision detection device, and a mesh webbing that is inserted in a state in which the bag is folded; The airbag is provided at a portion bent with respect to a portion including a communication portion with the gas supply device when the bag is inserted into the mesh webbing before deployment and expansion. It is an air belt device characterized by having a vent hole for releasing the working gas to the outside.
According to this, for example, when the seat belt is pulled by a forward movement of an occupant and the mesh webbing has a large tension, the mesh webbing prevents the deployment of the vent hole portion of the bag and moves to the vent hole of the gas for deployment. Therefore, the vent hole can be substantially closed to increase the bag internal pressure. This ensures high occupant restraint performance required during a frontal collision.
On the other hand, at the time of a side collision where the amount of forward movement of the occupant is small and the tension of the mesh webbing is small, the mesh webbing is weakly tightened on the bag, the bag expands to the vent hole, and the deployment gas reaches the vent hole. Since it is discharged, the bag internal pressure can be reduced, and good impact relaxation performance can be obtained.

In the present invention, a collision type discrimination device that discriminates at least one of an input direction and a magnitude of an impact caused by a collision is provided, and the opening and closing of the vent hole is controlled according to the discrimination result of the collision type discrimination device. it can.
According to this, by controlling the opening / closing of the vent hole according to the input direction and magnitude of the impact, it is possible to obtain the optimum restraining performance according to the collision mode.

In the present invention, a collision direction determination device that determines an impact input direction due to a collision is provided, and the operation timing of the gas supply device is delayed according to an increase in a vehicle longitudinal direction component of the impact input direction determined by the collision direction determination device. configuration and you.
Further, in the present invention, a collision direction determination device for determining the impact input direction due to the collision is provided,
The operation timing of the gas supply device is advanced in accordance with an increase in the vehicle left-right direction component in the impact input direction determined by the collision direction determination device.
According to this, the effect mentioned above can be acquired reliably by starting the expansion | deployment expansion | swelling of a bag after the tension | tensile_strength of mesh webbing fully raises at the time of front collision.

In the present invention, the vehicle includes a collision direction determination device that determines an impact input direction due to a collision, and a tension applying device that applies tension to the seat belt, and the vehicle longitudinal component of the impact input direction determined by the collision direction determination device. It shall be the structure to advance the actuation timing of the tensioning device against the operation timing of the gas supply apparatus in accordance with an increase in the.
The present invention further includes a collision direction determination device that determines an impact input direction due to a collision, and a tension applying device that applies tension to the seat belt, and the vehicle left and right of the impact input direction determined by the collision direction determination device. The operation timing of the tension applying device is delayed with respect to the operation timing of the gas supply device according to an increase in the direction component.
According to this, in the case of a frontal collision or an oblique collision in which the impact in the longitudinal direction of the vehicle is the main, by operating the gas supply device after pulling the mesh webbing by the tension applying device, the above-described effects can be more reliably achieved. Can be obtained.

In the present invention, there is provided an impact determination device that determines the magnitude of impact in the longitudinal direction of the vehicle due to a collision, and the operation timing of the gas supply device is delayed according to an increase in impact magnitude determined by the impact determination device; can do.
In the present invention, an impact determination device that determines the magnitude of a vehicle left-right impact due to a collision is provided, and the operation timing of the gas supply device is advanced according to an increase in the impact magnitude determined by the impact determination device. It can be configured.
According to this, when a large impact in the front-rear direction requiring a strong restraining force is input ( when the impact in the left-right direction is small) , the vent hole is reliably closed by delaying the operation timing of the gas supply device. The internal pressure can be increased.
On the other hand, if the impact in the front-rear direction is small (the impact in the left-right direction is large) and the restraint force is relatively low, the vent hole is opened after the middle stage of deployment by opening the gas supply device earlier, and the internal pressure of the bag is reduced. The impact relaxation performance can be obtained by lowering.

In the present invention, the apparatus includes an impact determination device that determines the magnitude of an impact in the vehicle longitudinal direction due to a collision, and a tension applying device that applies tension to the seat belt, and the magnitude of the impact in the longitudinal direction determined by the impact determination device. The operation timing of the tension applying device can be advanced with respect to the operation timing of the gas supply device according to the increase in the length.
Further, in the present invention, the apparatus includes an impact determination device that determines the magnitude of an impact in the vehicle left-right direction due to a collision, and a tension applying device that applies tension to the seat belt, and the magnitude of the impact determined by the impact determination device. The operation timing of the tension applying device can be delayed with respect to the operation timing of the gas supply device in accordance with the increase of.
According to this, the effect mentioned above can be acquired more reliably by operating the gas supply device after pulling the mesh webbing by the tension applying device.

In this invention, the said bag can be set as the structure which has the said some vent hole provided in the position where the normal direction distance from the broken line at the time of insertion in the said mesh webbing differs.
Moreover, in this invention, the said bag can be set as the structure which has the said some vent hole provided in the location where the frequency | count of folding from the communicating location with the said gas supply apparatus differs.
According to these, it is possible to tune the transition of the internal pressure reduction rate of the bag by the deployment gas sequentially reaching the plurality of vent holes and starting the discharge, thereby optimizing the impact mitigation performance. Can do.

  As described above, according to the present invention, it is possible to provide an air belt device capable of restraining an occupant adapted to a collision mode with a simple configuration.

1 is a schematic perspective view showing the configuration of a first embodiment of an air belt device to which the present invention is applied. It is a typical front view which shows the state after the expansion | deployment expansion | swelling of the air belt apparatus of 1st Embodiment. It is a typical fragmentary cutaway perspective view which shows the structure of the lap bag part of the air belt apparatus of 1st Embodiment. It is a top view of the bag in the air belt device of a 1st embodiment, and Drawing 4 (a) shows the folded state when inserted in mesh webbing, and Drawing 4 (b) shows the developed state. ing. FIG. 5 is a schematic cross-sectional view taken along the line VV in FIG. It is a figure which shows the outline | summary of control of the inflator and pretensioner in the air belt apparatus of 1st Embodiment. 7A and 7B are schematic views showing the unfolded state of the bag in the air belt device of the first embodiment, and FIGS. 7A and 7B are side views when the lap belt tension is large and small. (C) and FIG.7 (d) are cc part and dd part arrow sectional drawings of FIG.7 (a) and FIG.7 (b). It is a top view of the bag in the 2nd and 3rd embodiment of the air belt device to which the present invention is applied, and Drawing 8 (a) shows the 2nd embodiment and Drawing 8 (b) shows the 3rd embodiment. It is a graph which shows typically the history of bag internal pressure at the time of side collision in the air belt device of the 1st thru / or a 3rd embodiment. It is a top view of the bag in 4th Embodiment of the air belt apparatus to which this invention is applied. It is a top view of the bag in 5th Embodiment of the air belt apparatus to which this invention is applied. It is a top view of the bag in 6th Embodiment of the air belt apparatus to which this invention is applied. It is a graph which shows typically a history of bag internal pressure at the time of a side collision in an air belt device of the 4th thru / or a 6th embodiment.

Hereinafter, first to sixth embodiments of an air belt device to which the present invention is applied will be described.
<First Embodiment>
The air belt device of the first embodiment is configured as a three-point seat belt for a front seat of an automobile such as a passenger car, for example.
The inflatable belt device 1 restrains a passenger seated on a seat 2 shown in FIGS.
The seat 2 is fixed to a vehicle floor F (see FIG. 2) via a seat rail 3.
The air belt apparatus 1 includes a shoulder belt 10, a lap belt 20, a tongue 30, a buckle 40, an anchor 50, and the like.

The shoulder belt 10 is a portion arranged obliquely from the left and right shoulders of the occupant to the other waist. The upper end of the shoulder belt 10 is folded downward by an anchor (not shown) attached to the pillar P (see FIG. 2), and is wound up when not in use by a retractor (not shown) built in the pillar P.
In addition, the retractor is provided with a pretensioner that raises the tension by winding up the shoulder belt 10 using explosives when a collision of the vehicle or a precursor thereof is detected.

The lap belt 20 is a portion that is disposed in the vehicle width direction and restrains the occupant's waist. One end of the lap belt 20 is continuous with the end of the shoulder belt 10 and is folded back at the tongue 30. The other end of the lap belt 20 is fixed to an anchor 50 provided at the lower end of the pillar P.
A lap bag portion 21 is provided in a region (a half portion on the door side not shown) from the vicinity of the center portion of the lap belt 20 to the anchor 50. As shown in FIG. 2, the lap bag portion 21 is deployed and inflated to restrain the occupant when a vehicle collision or a sign of a collision is detected. The lap bag portion 21 also functions as an impact mitigating member that protects the occupant from door interior materials and the like in a side collision. The detailed configuration of the lap bag portion 21 will be described later.
The lap belt 20 excluding the shoulder belt 10 and the lap bag portion 21 is configured by non-inflatable normal webbing.

The tongue 30 is a metal fitting that is provided at the boundary between the shoulder belt 10 and the lap belt 20 and is folded back so as to be able to pass the webbing.
The buckle 40 is a bracket to which the tongue 30 is detachably attached, and is fixed to the vehicle floor via a stay.
The anchor 50 is a metal fitting that is provided at the lower end portion of the pillar P and to which the end portion of the lap belt 20 on the lap bag portion 21 side is fixed.

Next, a detailed configuration around the lap bag portion 21 and the anchor 50 will be described.
As illustrated in FIG. 3, the lap bag portion 21 includes a bag 60, a mesh webbing 70, a cover 80, and the like.
The anchor 50 is provided with an inflator 90.

For example, as shown in FIG. 5, the bag 60 is formed into a bag shape by overlapping two base fabric panels 61 and 62 and stitching the periphery.
As shown in FIG. 4B, the bag 60 has a main body 63 having a substantially circular planar shape. In FIG. 4B, the vertical direction is the longitudinal direction of the lap belt 20. The peripheral edge of the main body 63 is stitched by stitches S in which a plurality (for example, three) are provided in parallel. In addition, a sealing agent that prevents leakage of the gas for development is applied to the stitched portion.
At the end of the bag 60 on the anchor 50 side, a blowing port 64 that is a gas flow passage for development projecting in the radial direction from the main body 63 is formed.

In addition, a vent hole 65 is formed at the peripheral edge of the main body 63. The vent hole 65 is formed by not sewing and sealing the base fabric panels 61 and 62 at a part on the peripheral edge of the main body 63. At both ends of the vent hole 65, the stitch S is bent with an R on the outer peripheral edge side of the main body 63.
In the first embodiment, two vent holes 65 are formed, for example, on the diameter of the main body 63 perpendicular to the longitudinal direction of the lap belt 20 (left and right end portions in FIG. 4B).

  Further, a tab-like connecting portion 66 that extends in the longitudinal direction of the lap belt 20 and is used for connecting to the webbing is formed at the end of the main body 63 opposite to the blowing port 64.

  Before the bag 60 is deployed and inflated, as shown in FIG. 4A and FIG. 5, the air inlet 64 is provided at both ends where the vent holes 65 are provided along a fold line FL parallel to the longitudinal direction of the lap belt 20. It is folded in a state where it is folded with respect to the portion provided with.

The mesh webbing 70 is a sleeve-like member into which the bag 60 is inserted.
The mesh webbing 70 has a characteristic that the longitudinal dimension of the lap belt 20 does not increase even if the tension applied to the lap belt 20 increases.
The cover 80 is a sleeve-like member provided on the outer side of the mesh webbing 70. The cover 80 constitutes the outer surface of the lap belt 20 in the lap bag portion 21. The cover 80 is formed of a stretchable material so as not to prevent the deformation of the bag 60 and the mesh webbing 70 accompanying the expansion and expansion of the bag 60.
In addition, the cover 80 may be configured to expand and inflate the bag 60 and the mesh webbing 70 by breaking a breakage portion formed in the cover 80 instead of such a stretchable one.

The inflator 90 supplies the developing gas to the bag 60 using, for example, explosives.
The inflator 90 and the pretensioner of the shoulder belt 10 are ignited with explosives under the control of an air belt control unit (not shown), and supply of the developing gas and traction of the shoulder belt 10 are started.
A plurality of collision sensors having, for example, an acceleration pickup or the like is connected to the air belt control unit, and it is possible to detect the collision and determine the magnitude of the impact and the direction of impact input.
The impact input direction is, for example, approximately the front-rear direction of the vehicle at the time of a frontal collision of the vehicle, and approximately the vehicle width direction at the side collision. Further, there may be a case where the impact input direction has both a vehicle longitudinal direction component and a vehicle width direction component, such as an oblique collision. In this case, an intermediate control between the frontal collision and the side collision is performed, and the control closer to the frontal collision is performed according to an increase in the vehicle longitudinal component.

The air belt control unit controls the deployment gas supply start timing (ignition timing) of the inflator 90 and the traction start timing (ignition timing) of the pretensioner according to the impact input direction as shown in FIG. .
In FIG. 6, the upper part of the table shows a case where the impact from the front is large, and the lower part of the table shows a case where the impact from the side is large.
In this embodiment, when the impact from the front is large (when it is a frontal collision and the impact is large), the tension of the lap belt 20 is relatively large and the internal pressure of the bag 60 is relatively high.
When the impact from the side is large (when the impact is a side collision and the impact is large), the tension of the lap belt 20 is relatively large and the internal pressure of the bag 60 is relatively low.
Further, when the impact is relatively small although it is a frontal collision, or when the impact from both the front-rear direction and the vehicle width direction is received due to a collision from obliquely forward, these intermediate controls are performed.

Specifically, in the case of a frontal collision in which the direction of movement of the occupant is mainly forward, and an impact greater than a predetermined threshold is determined, the pretensioner is ignited (actuated) in advance, and then the time difference is increased. The inflator 90 is ignited (actuated).
Further, when the impact is less than a predetermined threshold due to a frontal collision, the inflator 90 and the pretensioner are ignited simultaneously.

Further, in the case of a side collision in which the direction of movement of the occupant is mainly lateral, and an impact greater than a predetermined threshold is determined, the pretensioner is not ignited and only the inflator 90 is ignited.
In the case of an oblique collision in which the impact from the side is less than the predetermined threshold and the impact from the front is greater than or equal to the predetermined threshold, the inflator 90 is ignited in advance, and then the pretensioner is turned on after a time difference. I am firing.

In the control described above, when the pretensioner is ignited in advance and then the inflator 90 is ignited as in the case where the impact is large due to the frontal collision, as shown in FIGS. 7 (a) and 7 (c). Then, the developing gas is blown into the bag 60 with the mesh webbing 70 being pulled. At this time, the folded portion of the bag 60 is pressed by the mesh webbing 70 under tension and does not expand. For this reason, the vent hole 65 of the bag 60 is substantially closed, and the pressure in the bag 60 becomes higher than that when the inflator 90 is pre-ignited as described later.
According to this, the restraining force of the occupant's waist can be increased, and the occupant can be prevented from moving forward.

On the other hand, when the inflator 90 is ignited first and then the pretensioner is ignited as in the case of a large impact due to a side collision, as shown in FIGS. 7B and 7D, the bag 60 Development gas G is blown into the inside. In this case, since the tension applied to the mesh webbing 70 is relatively small, the folded portion of the bag 60 expands while being expanded, so that the expansion gas G reaches the vent hole 65 and is gradually discharged therefrom. For this reason, the pressure in the bag 60 becomes relatively smaller than in the case of a frontal collision, and when an external force acts on the bag 60, the discharge of the developing gas is further promoted to prevent an increase in internal pressure.
According to this, a passenger | crew can be restrained softly.

  In addition, when the impact is small even in the case of a frontal collision, or when the impact is an oblique collision having both a vehicle front-rear direction component and a vehicle width direction component, an appropriate characteristic can be obtained by setting these intermediate characteristics. Crew restraint can be performed.

  According to the first embodiment described above, a lap belt can be used according to a collision mode such as a collision direction and a magnitude of an impact with a simple configuration without using, for example, a vent hole that is opened and closed by a variable inflator or an actuator. It becomes possible to adjust the internal pressure of the 20 bags 60, and good occupant restraint performance can be obtained.

<Second and Third Embodiments>
Next, a second embodiment and a third embodiment of the air belt device to which the present invention is applied will be described.
In each embodiment described below, portions that are substantially the same as those of the previous embodiment are denoted by the same reference numerals, description thereof is omitted, and differences are mainly described.
FIG. 8A is a plan view of the bag 60A in the second embodiment.
The bag 60A is obtained by reducing the size of the vent hole 65 (the width of the non-sewn portion in the plan view) compared to the bag 60 of the first embodiment.
FIG. 8B is a plan view of the bag 60B in the third embodiment.
The bag 60B is obtained by increasing the size of the vent hole 65 with respect to the bag 60 of the first embodiment.

FIG. 9 is a graph schematically showing changes in internal pressure of the bags 60, 60A, 60B at the time of a side collision in the first to third embodiments, where the horizontal axis shows time and the vertical axis shows internal pressure. Yes. In each embodiment, the inflator 90 can be a variable output type, and FIG. 9 shows a case where the output is large and the output is small. (The same applies to FIG. 13 described later).
As shown in FIG. 9, the bag internal pressure is substantially constant after deployment and inflation until, for example, a door lining enters the vehicle compartment and starts to press the bag 60, and then the deployment gas flows out from the vent hole 65. It is lowered by that.
At the time of a frontal collision (a state in which the vent hole 65 is closed), as indicated by a three-dot chain line in FIG. 9, the internal pressures of the bags 60, 60A, 60B substantially do not decrease.
Here, when the size of the vent hole 65 is reduced or enlarged as in the second embodiment and the third embodiment, the rate of decrease in the internal pressure can be changed, and the impact relaxation performance of the bag can be appropriately tuned. Can do.

<Fourth embodiment>
Next, a fourth embodiment of an air belt device to which the present invention is applied will be described.
As shown in FIG. 10, the bag 60 </ b> C of the fourth embodiment is formed by forming sub vent holes 65 a on both sides of the vent hole 65 of the bag 60 of the first embodiment in the circumferential direction of the main body 63. The sub vent hole 65a has a normal direction distance (lateral dimension in the drawing) from the folding line FL when the bag 60C is folded, which is smaller than the vent hole 65, and comes before the vent hole 65 when the bag 60C is expanded and inflated. Arranged for the deployment gas to reach.

<Fifth Embodiment>
Next, a fifth embodiment of an air belt device to which the present invention is applied will be described.
As shown in FIG. 11, the bag 60 </ b> D of the fifth embodiment has a planar shape of the main body 63 formed in an oval shape having a major axis direction orthogonal to the longitudinal direction (vertical direction in the drawing) of the lap belt 20. The blowing port 64 and the connecting portion 66 are arranged offset to one side in the long axis direction.

The bag 60D is provided with vent holes 65b and 65c at the side end near the air inlet 64 and at the side end far from the air inlet 64, respectively.
The vent hole 65b is provided at a location where the bag 60D is bent one turn from the portion where the air inlet 64 is provided when the bag 60D is folded.
On the other hand, the vent hole 65c is provided at a location where the bag 60D is bent twice from the portion where the air inlet 64 is provided when the bag 60D is folded.
With such a configuration, in the bag 60D of the fifth embodiment, the deployment gas reaches the vent hole 65c at the time of deployment and inflation later than the vent hole 65b.

<Sixth Embodiment>
Next, a sixth embodiment of the air belt device to which the present invention is applied will be described.
As shown in FIG. 12, the bag 60E of the sixth embodiment has a vent hole 651 from one end of the end 63 in the direction perpendicular to the longitudinal direction of the lap belt 20 (left and right in the drawing) from the tongue side. , 653, and vent holes 652, 654 are provided in order from the tongue side.
Here, the normal direction distances L1, L2, L3, and L4 from the straight line CL that passes through the air inlet 64 and is parallel to the longitudinal direction of the lap belt 20 to the vent holes 651, 652, 653, and 654 are sequentially in this order. It's getting longer.
With such a configuration, in the bag 60E of the sixth embodiment, the deployment gas sequentially reaches the vent holes 651, 652, 653, 654 in the order of deployment.

As shown in FIG. 13, in the above-described fourth to sixth embodiments, the rate at which the bag internal pressure decreases after the deployment gas reaches the vent hole is shifted from the timing at which the plurality of vent holes start to function. Can be changed in multiple steps, and fine tuning of shock absorption characteristics becomes possible.
At the time of a frontal collision (a state where the vent hole 65 is closed), as indicated by a three-dot chain line in FIG. 13, the internal pressures of the bags 60C, 60D, and 60E are substantially not lowered.

The technical scope of the present invention is not limited by the above-described embodiments, and can be changed as appropriate. Examples of such changes include the following, which are also within the technical scope of the present invention.
(1) In each embodiment, when the collision of the vehicle is detected, the inflator 90 and the pretensioner are ignited. However, these are ignited according to the detection of the pre-crash that is a precursor of the vehicle collision. Also good.
(2) In each embodiment, the tension is applied to the mesh webbing by the explosive pretensioner. However, the present invention is not limited to this, and other means such as an electric hoisting retractor may be used. Further, the mesh webbing may be pulled using the increase in the tension of the seat belt caused by the forward movement of the occupant at the time of a frontal collision to prevent the vent hole portion from being developed. In this case, traction means such as a pretensioner is not always necessary. Furthermore, when using the pretensioner, it is preferable to provide a so-called one-weighting that prevents the seat belt that has been wound up once from being pulled out again.
(3) The configuration of the air belt including the bag can be appropriately changed. The air belt device of each embodiment has a configuration in which a bag is provided on a part of a lap belt. However, for example, a configuration in which a bag is provided on a shoulder belt or the like may be used.
(4) In each embodiment, the bag is configured by, for example, overlapping two base fabric panels and stitching the ends, but may have a different base fabric panel configuration. Also, the joining method is not limited to stitching, but can be appropriately changed such as adhesion. Also, the folding method is not particularly limited.
(5) In each embodiment, the vent hole is formed by, for example, not joining the two base fabric panels. However, the present invention is not limited to this, and for example, the base fabric panel at a portion that is bent with respect to the blowing port of the bag. You may provide a vent hole by forming an opening and a slit in this.

DESCRIPTION OF SYMBOLS 1 Air belt apparatus 2 Seat 3 Seat rail P Pillar F Floor 10 Shoulder belt 20 Lap belt 21 Lap bag part 30 Tongue 40 Buckle 50 Anchor 60 Bag (1st Embodiment) 60A Bag (2nd Embodiment)
60B bag (third embodiment) 60C bag (fourth embodiment)
60D bag (fifth embodiment) 60E bag (sixth embodiment)
61, 62 Base fabric panel 63 Main body portion 64 Blow-in port 65 Vent hole 65a Sub vent hole 65b, 65c Vent hole 651, 652, 653, 654 Vent hole 66 Connecting portion 70 Mesh webbing 80 Cover 90 Inflator FL Fold line S Stitch

Claims (11)

A seat belt that restrains an occupant seated in the seat;
A bag that is provided in a part of the seat belt and that is expanded and inflated by the pressure of a gas for expansion;
A collision detection device for detecting a collision or a sign of a collision;
A gas supply device for supplying the developing gas to the bag according to a detection result of the collision detection device;
An air belt device comprising: mesh webbing inserted in a state where the bag is folded,
When the bag is inserted into the mesh webbing before deployment, the vent is provided at a portion bent with respect to the portion including the communication portion with the gas supply device and discharges the deployment gas to the outside. It has a hole,
It has a collision direction determination device that determines the impact input direction due to a collision,
An air belt device that delays the operation timing of the gas supply device in accordance with an increase in a vehicle longitudinal direction component in the impact input direction determined by the collision direction determination device.   A seat belt that restrains an occupant seated in the seat;
  A bag that is provided in a part of the seat belt and that is expanded and inflated by the pressure of a gas for expansion;
  A collision detection device for detecting a collision or a sign of a collision;
  A gas supply device for supplying the developing gas to the bag according to a detection result of the collision detection device;
  Mesh webbing inserted with the bag folded
  An air belt device comprising:
  When the bag is inserted into the mesh webbing before deployment, the vent is provided at a portion bent with respect to the portion including the communication portion with the gas supply device and discharges the deployment gas to the outside. Has a hall,
  A collision direction judging device for judging the impact input direction by the collision;
  A tension applying device that applies tension to the seat belt;
  The operation timing of the tension applying device is advanced with respect to the operation timing of the gas supply device in accordance with an increase in the vehicle longitudinal component in the impact input direction determined by the collision direction determination device.
  An inflatable belt device.   A seat belt that restrains an occupant seated in the seat;
  A bag that is provided in a part of the seat belt and that is expanded and inflated by the pressure of a gas for expansion;
  A collision detection device for detecting a collision or a sign of a collision;
  A gas supply device for supplying the developing gas to the bag according to a detection result of the collision detection device;
  Mesh webbing inserted with the bag folded
  An air belt device comprising:
  When the bag is inserted into the mesh webbing before deployment, the vent is provided at a portion bent with respect to the portion including the communication portion with the gas supply device and discharges the deployment gas to the outside. Has a hall,
  It has a collision direction determination device that determines the impact input direction due to a collision,
  Advancing the operation timing of the gas supply device in accordance with an increase in the vehicle left-right direction component in the impact input direction determined by the collision direction determination device
  An inflatable belt device.   A seat belt that restrains an occupant seated in the seat;
  A bag that is provided in a part of the seat belt and that is expanded and inflated by the pressure of a gas for expansion;
  A collision detection device for detecting a collision or a sign of a collision;
  A gas supply device for supplying the developing gas to the bag according to a detection result of the collision detection device;
  Mesh webbing inserted with the bag folded
  An air belt device comprising:
  When the bag is inserted into the mesh webbing before deployment, the vent is provided at a portion bent with respect to the portion including the communication portion with the gas supply device and discharges the deployment gas to the outside. Has a hall,
  A collision direction judging device for judging the impact input direction by the collision;
  A tension applying device that applies tension to the seat belt;
  The operation timing of the tension applying device is delayed with respect to the operation timing of the gas supply device in accordance with an increase in the vehicle left-right direction component in the impact input direction determined by the collision direction determination device.
  An inflatable belt device. A collision type discriminating device that discriminates at least one of the input direction and the magnitude of impact due to a collision,
The air belt device according to any one of claims 1 to 4, wherein opening and closing of the vent hole is controlled in accordance with a determination result of the collision type determination device. Equipped with an impact judgment device for judging the magnitude of impact in the vehicle longitudinal direction due to a collision,
The air belt device according to any one of claims 1 to 5, wherein the operation timing of the gas supply device is delayed in accordance with an increase in the magnitude of the impact determined by the impact determination device. An impact determination device for determining the magnitude of impact in the vehicle longitudinal direction due to a collision;
A tension applying device that applies tension to the seat belt;
Any of claims 1, wherein the advancing against operating time of the gas supply device operation timing of the tensioning device in accordance with an increase in the magnitude of the impact of the impact judgment device determines to claim 6 The air belt device according to claim 1.   Equipped with an impact judgment device for judging the magnitude of impact in the vehicle left-right direction due to a collision,
  Advancing the operation timing of the gas supply device according to an increase in the magnitude of the impact determined by the impact determination device.
  The air belt device according to any one of claims 1 to 5, wherein:   An impact determination device for determining the magnitude of impact in the vehicle left-right direction due to a collision;
  A tension applying device that applies tension to the seat belt;
  The operation timing of the tension applying device is delayed with respect to the operation timing of the gas supply device according to an increase in the magnitude of the impact determined by the impact determination device.
  The air belt device according to any one of claims 1 to 6, wherein: The bag according to any one of claims 1 to 9 , wherein the bag has a plurality of vent holes provided at different positions in a normal direction distance from a broken line when inserted into the mesh webbing. The air belt device according to claim 1. Said bag is in any one of claims 1, characterized in that it comprises a plurality of said vent holes provided in the portion where the folding number different from the communicating portion between the gas supply apparatus to claim 10 The air belt device according to the description.

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