JP6136875B2 - Side airbag device for vehicle - Google Patents

Description

  The present invention relates to a vehicle side airbag device mounted on a vehicle seat.

  In the side airbag device described in Patent Document 1 below, the airbag body is inflated and deployed across the center pillar garnish and the door trim of the side door.

JP 2005-022440 A

  Since the strength and rigidity of the center pillar and the side door are different, there is a difference in the amount of intrusion into the vehicle width direction inside in various collision modes, and a step is formed between the center pillar garnish and the door trim. For this reason, when the airbag is inflated and deployed across the center pillar garnish and the door trim as in the above-described side airbag device, the reaction surface on which the airbag receives the reaction force becomes unstable. Therefore, there is room for improvement from the viewpoint of improving the passenger restraining performance of the airbag.

  In view of the above facts, an object of the present invention is to provide a vehicle side airbag device that can contribute to improvement of an occupant restraining performance of an airbag.

A side airbag device for a vehicle according to a first aspect of the present invention is disposed on a side portion on the outer side in the vehicle width direction of a seat back of a vehicle seat, and inflates and deploys the airbag with a gas pressure generated by an inflator. A reaction force having an airbag module, a fixed portion fixed to the side frame of the seat back, and a reaction force receiving portion that extends from the fixed portion toward the front side of the vehicle and faces the airbag module from the outside in the vehicle width direction. And the front end of the reaction force receiving portion is a pillar garnish with the vehicle seat positioned at a reference setting position when the AM50 dummy is seated on the vehicle seat in a standard seating posture. The reaction force plate is formed so as to be aligned in the vehicle width direction with respect to the front end line of the flat surface portion, and the reaction force plate has the strength of the fixing portion and the reaction force receiving portion and By directing the airbag that is inflated and deployed to the door trim side located in front of the pillar garnish due to rigidity, the airbag is brought into contact with the door trim, but is not brought into contact with the pillar garnish. To .

  According to the first aspect of the present invention, the shape and size of the reaction force plate is based on the position of the vehicle seat relative to the pillar garnish when the AM50 dummy is seated on the vehicle seat in a standard seating posture. Is set.

  Further, the invention described in claim 1 is not limited to the configuration in which the fixing portion of the reaction force plate is directly fixed to the side frame of the seatback, but also includes a configuration in which the reaction force plate is indirectly fixed via another member.

  Further, “directing depending on the strength and rigidity of the fixed portion and the reaction force receiving portion” according to claim 1 means that the reaction force receiving portion directly or indirectly interferes (contacts) with the pillar garnish. This means that the airbag that is inflated and deployed can be oriented as described above even in a state where it is not.

In the first aspect of the invention, for example, when the vehicle collides with the side, the inflator is activated and the airbag is inflated and deployed. At this time, the reaction force plate directs the airbag that is inflated and deployed to the door trim side located in front of the pillar garnish by the strength and rigidity of the fixed portion and the reaction force receiving portion. Thereby, the reaction force plate, while allowing the air bag into contact with the door trim and the pillar garnish you do not abut. As a result, even when a step is formed between the pillar garnish and the door trim due to the impact of the side collision, the reaction force surface of the airbag can be stabilized. Thereby, it can contribute to the passenger | crew restraint performance improvement of a side airbag.
Further, in the present invention, the front end of the reaction force receiving portion is a flat portion of the pillar garnish in a state where the vehicle seat is positioned at a reference setting position when the AM50 dummy is seated on the vehicle seat in a standard sitting posture. A reaction force plate is formed so as to line up in the vehicle width direction with respect to the front end line. Thereby, it can restrict | limit effectively by a reaction force board that an airbag expand | swells to the pillar garnish side, and can point an airbag favorably to the door trim side. It should be noted that the “alignment in the vehicle width direction” described in claim 1 is not limited to being strictly aligned in the vehicle width direction as long as the above effect can be obtained.

  A side airbag device for a vehicle according to a second aspect of the present invention is the vehicle side airbag device according to the first aspect, wherein the reaction force plate is deformed by receiving the inflation pressure of the airbag, so that the reaction force receiving portion is fixed. Rotates outward in the vehicle width direction with the section side as the center.

  In the invention according to claim 2, the reaction force plate is deformed as described above when the airbag is inflated and deployed. That is, the reaction force plate is set to have strength and rigidity so as to direct the airbag to be inflated and deployed toward the door trim side located in front of the vehicle with respect to the pillar garnish while deforming itself. As described above, since the reaction force plate is deformed when the airbag is inflated and deployed, the reaction force plate can be compactly disposed in the side portion of the seat back at the normal time.

A side airbag device for a vehicle according to a third aspect of the present invention is the vehicle side airbag device according to the first or second aspect , wherein the fixed portion is provided with an inner wall facing the reaction force receiving portion, A rear portion of the airbag module is inserted between the reaction force receiving portion and the reaction force plate is assembled to the airbag module.

In the invention according to claim 3 , since the reaction force plate can be assembled to the airbag module, the reaction force plate can be attached together when the airbag module is attached to the side frame of the seat back. Thereby, manufacture of a vehicle seat can be made easy.

A side airbag device for a vehicle according to a fourth aspect of the present invention is the vehicle side airbag device according to the third aspect , wherein a hook-shaped slot is formed in the inner wall, and the stud bolt of the inflator inserted into the slot is provided. The reaction plate is fastened and fixed to the side frame.

In the invention according to claim 4 , since it is configured as described above, when the reaction force plate receives the inflation pressure of the airbag, the edge of the hook-shaped slot engages with the stud bolt. Thus, the inflation pressure of the airbag can be received well.

According to a fifth aspect of the present invention, in the vehicle side airbag device according to the first or second aspect , the side frame includes a side wall portion and a rear wall portion extending inward in the vehicle width direction from a rear end of the side wall portion. The fixing portion is fastened and fixed to the rear wall portion.

In the invention according to claim 5 , since it is configured as described above, for example, a slight structure such as forming a bolt hole for fastening and fixing the fixing portion of the reaction force plate on the rear wall portion of the side frame. By the change, the reaction force plate can be added to the vehicle seat.

  As described above, the vehicle side airbag device according to the present invention can contribute to the improvement of the occupant restraint performance of the side airbag.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a configuration around a vehicle side airbag device according to a first embodiment of the present invention and is a diagram showing an inflated and deployed state of an airbag. It is an expanded sectional view which expands and shows the cut surface along the F2-F2 line of FIG. FIG. 3 is an enlarged cross-sectional view showing a part of FIG. 2 in an enlarged manner, and shows a state before the airbag is inflated and deployed. It is a perspective view of the airbag module and reaction force board with which the side airbag apparatus for vehicles is provided. It is sectional drawing corresponding to FIG. 2 which shows the condition when the vehicle which concerns on 1st Embodiment carries out the side collision with respect to the pole. It is sectional drawing corresponding to FIG. 2 which shows the condition when another vehicle carries out a side collision with respect to the vehicle which concerns on 1st Embodiment. FIG. 5 is a plan sectional view showing a configuration around a vehicle side airbag device according to a second embodiment of the present invention.

<First Embodiment>
A vehicle side airbag device 10 according to a first embodiment of the present invention will be described with reference to FIGS. In addition, the arrow FR, arrow UP, and arrow OUT that are appropriately described in each figure respectively indicate the front direction (traveling direction), the upward direction, and the outside in the vehicle width direction of the vehicle. Hereinafter, when simply using the front / rear, left / right, and up / down directions, unless otherwise specified, the front / rear direction of the vehicle, the left / right direction of the vehicle left / right direction (vehicle width direction), and the up / down direction of the vehicle up / down direction are indicated. To do.

(Constitution)
As shown in FIGS. 1 and 2, the vehicle side airbag device 10 according to the present embodiment is mounted on a door side side portion 14 </ b> A (side portion in the vehicle width direction outer side) of the seat back 14 of the vehicle seat 12. Has been. The vehicle seat 12 is a driver seat of a left-hand drive vehicle, for example. The seat back 14 of the vehicle seat 12 is connected to the rear end portion of the seat cushion 16 so as to be tiltable, and a headrest 18 is connected to the upper end portion of the seat back 14.

  In the present embodiment, the front-rear direction, the left-right direction (width direction), and the up-down direction of the vehicle seat 12 coincide with the front-rear direction, left-right direction (width direction), and up-down direction of the vehicle. In FIG. 1, a crash test dummy P is seated on the vehicle seat 12 instead of an actual occupant. This dummy P is, for example, AM50 (50th percentile of an American adult male) of WorldSID (World Side Impact Dummy). The dummy P is seated in a standard seating posture determined by the collision test method, and the vehicle seat 12 is located at a reference setting position corresponding to the seating posture.

  1 and 2, the reference numeral 20 is a center pillar of the vehicle body, and the reference numeral 22 is a resin center that forms the inner side surface of the center pillar 20 in the vehicle width direction. It is a pillar garnish. In FIG. 2, a reference numeral 24 denotes a front side door (not shown in FIG. 1), and a reference numeral 26 forms an inner side surface in the vehicle width direction of the front side door 24. This is a resin door trim. Further, in FIG. 1, a line denoted by reference numeral BL is a door belt line of the front side door 24.

  The vehicle side airbag device 10 includes an airbag module 28 (see FIGS. 3 and 4) and a reaction force plate 30 (reaction force bracket) as main parts. The airbag module 28 includes an airbag 46 and an inflator 48 (gas generator) that generates gas in the airbag 46.

  The airbag 46 is arranged (stored) in the door side portion 14A in a modularized state together with the inflator 48, and is inflated and deployed to the front side of the door side portion 14A by the pressure of gas generated from the inflator 48. To do. At the time of the inflation and deployment, the seat back pad and the seat skin (both not shown) disposed on the door side portion 14A are configured to be broken by receiving the inflation pressure of the airbag 46.

  The airbag 46 is made of, for example, a nylon or polyester cloth sewn in a bag shape. The airbag 46 is formed so as to form a substantially oval shape that is long along the vertical direction of the seat back 14 when the inflated and deployed state is viewed from the side as shown in FIG. The size is set such that the shoulder S, chest C, abdomen B and waist L of P can be restrained.

  The inflator 48 is a so-called cylinder type inflator and is formed in a cylindrical shape. The inflator 48 is housed in the rear end portion of the airbag 46 in a state where the axial direction is along the vertical direction of the seat back 14. From the outer periphery of the inflator 48, a pair of upper and lower stud bolts 50 protrudes inward in the vehicle width direction. These stud bolts penetrate the base fabric of the airbag 46 and also penetrate the side wall portion 54A (see FIGS. 2 and 3) included in the side frame 54 of the seat back frame 52, and a nut 56 is provided at the tip side. It is screwed. Thereby, the inflator 48 is fastened and fixed to the side frame 54 together with the airbag 46 (so-called back tightening). The side frame 54 includes a front wall portion 54B and a rear wall portion 54C that extend inward in the seat width direction from the front end portion and the rear end portion of the side wall portion 54A.

  As shown in FIG. 1, a side collision ECU 58 mounted on the vehicle is electrically connected to the inflator 48. A side collision sensor 60 that detects a side collision is electrically connected to the side collision ECU 58. The side collision ECU 58 activates the inflator 48 when a side collision (inevitable) is detected based on a signal from the side collision sensor 60. Thereby, the gas is jetted into the airbag 46 from the gas jetting portion provided at the upper end portion or the lower end portion of the inflator 48. When a pre-crash sensor that predicts (predicts) a side collision is electrically connected to the side collision ECU 58, the inflator is used when the side collision ECU 58 predicts a side collision based on a signal from the pre-crash sensor. 48 may be configured to be activated.

  On the other hand, the reaction force plate 30 is formed, for example, by bending a sheet metal material, and includes a fixed portion 32 and a reaction force receiving portion 34 as shown in FIGS. . The fixed portion 32 includes an inner wall 32A that is superimposed on an outer surface in the vehicle width direction of the side wall portion 54A of the side frame 54, and a rear wall 32B that extends integrally from the rear end portion of the inner wall 32A toward the outer side in the vehicle width direction. And is formed in an L shape in plan view. The inner wall 32 </ b> A and the rear wall 32 </ b> B are formed in a long plate shape whose longitudinal direction is the height direction of the seat back 14.

  A reaction force receiving portion 34 is integrally extended from the vehicle width direction outer side end portion of the rear wall 32B toward the vehicle front side. The reaction force receiving portion 34 is formed in a long plate shape whose longitudinal direction is the height direction of the seat back 14, and the width dimension along the seat longitudinal direction is the width along the seat longitudinal direction of the inner side wall 32A. It is set sufficiently larger than the dimensions. The rear portion of the airbag module 28 is inserted between the reaction force receiving portion 34 and the inner wall 32A. As a result, the reaction force plate 30 is assembled to the airbag module 28.

  Further, a fastening portion 32A1 extending forward of the seat is provided at the middle portion in the vertical direction of the inner wall 32A. A pair of upper and lower slots 36 are formed in the fastening portion 32A1. Each slot 36 includes a laterally extending portion 36A cut from the front end of the fastening portion 32A1 to the rear end portion of the fastening portion 32A1, and a vertical portion cut from the rear end portion of the laterally extending portion 36A to the upper side of the seat back 14. The extending portion 36 </ b> B is formed in a bowl shape (L-shape when viewed from the inside in the sheet width direction). The upper and lower stud bolts 50 of the inflator 48 are inserted into these slots 36. The fixing portion 32 is sandwiched between the inflator 48 and the side wall portion 54A in a state where the upper and lower stud bolts 50 are positioned in the longitudinally extending portion 36B of the upper and lower slots 36. The fixing portion 32, that is, the reaction force plate 30 is fastened and fixed to the side frame 54 by the fastening force of the stud bolt 50 and the nut 56.

  In the reaction force plate 30 configured as described above, at a normal time before the airbag 46 is inflated and deployed, the reaction force receiving portion 34 faces the airbag module 28 from the outside in the vehicle width direction (here, as shown in FIG. 3). In contact). The reaction force receiving portion 34 extends forward of the vehicle from the airbag module 28. In the state where the vehicle seat 12 is located at the reference setting position described above, the reaction force is such that the front end of the reaction force receiving portion 34 is aligned with the front end line 38 of the flat portion 22A of the center pillar garnish 22 in the vehicle width direction. A plate 30 is formed. The plane portion 22A is a portion of the center pillar garnish 22 where the thickness direction is along the vehicle width direction. Further, the reaction force receiving portion 34 may be formed so that at least the lower end of the front end is aligned with the front end line 38 in the vehicle width direction in a state where the vehicle seat 12 is located at the reference setting position described above.

  On the other hand, when the airbag 46 is inflated and deployed, the above-mentioned reaction force plate 30 causes the center pillar garnish 22 to move the airbag 46 by its own strength and rigidity (strength and rigidity of the fixing portion 32 and the reaction force receiving portion 34). Rather, it is directed (guided) toward the door trim 26 located in front of the vehicle. In other words, the reaction force plate 30 faces the airbag 46 so that the airbag 46 that is inflated and deployed contacts only the door trim 26 of the center pillar garnish 22 and the door trim 26. At this time, the reaction force plate 30 is deformed by receiving the inflation pressure of the airbag 46, so that the reaction force receiving portion 34 is fixed to the fixing portion 32 side (here, the connecting portion between the reaction force receiving portion 34 and the fixing portion 32). ) Around the vehicle width direction. That is, the strength and rigidity of the reaction force plate 30 are set so that the airbag 46 that is inflated and deployed is directed toward the door trim 26 located in front of the center pillar garnish 22 while deforming itself. As shown in FIG. 2, the reaction force plate 30 is in a state where the reaction force receiving portion 34 does not directly or indirectly interfere (contact) with the center pillar garnish 22, that is, a state where the reaction force plate 30 is not supported by the center pillar garnish 22. In this case, the airbag 46 that is inflated and deployed can be oriented as described above.

(Function and effect)
Next, the operation and effect of the first embodiment will be described.

  In the vehicle side airbag device 10 configured as described above, when the side collision ECU 58 detects a side collision based on a signal from the side collision sensor 60, the inflator 48 is activated by the side collision ECU 58. Thereby, gas is supplied to the inside of the airbag 46, and the airbag 46 is inflated and deployed to the front side of the door side portion 14A of the seat back 14. At this time, the reaction force plate 30 directs the airbag 46 that is inflated and deployed toward the door trim 26 located in front of the center pillar garnish 22 by the strength and rigidity of the fixing portion 32 and the reaction force receiving portion 34. To do. As a result, the airbag 46 can be brought into contact with the door trim 26 while not being brought into contact with the center pillar garnish 22. As a result, even when a step is formed between the center pillar garnish 22 and the door trim 26 due to the impact of the side collision, the reaction force surface of the airbag 46 can be stabilized.

  That is, for example, as shown in FIG. 5, when the front side door 24 of the vehicle has a side collision with the pole 62, the collision portion of the pole 62 in the front side door 24 is locally inward in the vehicle width direction. Invade. At this time, the intrusion amount of the front side door 24 in the vehicle width direction inner side becomes larger than the intrusion amount of the center pillar 20 having higher strength and rigidity than the front side door 24 in the vehicle width direction, and the door trim 26 And a center pillar garnish 22 is formed with a step (shift in the vehicle width direction).

  Further, for example, as shown in FIG. 6, when another vehicle 64 collides with the vehicle in a side collision, the collision portion with the center pillar 20 at the front end portion of the other vehicle 64 is deformed into a concave shape, while the front end of the other vehicle. The front side door 24 is pushed inward in the vehicle width direction by the portion. As a result, a step is formed between the door trim 26 and the center pillar garnish 22.

  For this reason, when the airbag 46 is inflated and deployed between the door trim 26 and the center pillar garnish 22 (see the airbag 46 indicated by a two-dot chain line in FIG. 2), the airbag 46 may be deformed in a side collision. The power is not stable. As a result, it is conceivable that the airbag 46 remains uncompressed on the side of the center pillar garnish 22 as shown by the two-dot chain line in FIGS. 5 and 6. As described above, in the configuration in which the center pillar garnish 22 is used as the reaction surface, the occupant restraint performance of the airbag 46 depends on the intrusion amount of the center pillar garnish 22 in the vehicle width direction. And there is room for improvement from the viewpoint of improving so-called robustness.

  On the other hand, in this embodiment, even when the amount of penetration of the center pillar garnish 22 into the vehicle width direction is small, the reaction force plate 30 causes the airbag 46 to move in the contact direction with the door trim 26 by its own strength and rigidity. Can be oriented. As a result, the reaction force surface of the airbag 46 can be stabilized in various collision modes, which can contribute to improving the occupant restraint performance of the airbag 46. In addition, since it does not depend on the amount of penetration of the center pillar garnish 22 into the vehicle width direction, the occupant restraint performance can be improved regardless of the collision mode, and so-called robustness can be improved.

  It is also conceivable that the airbag is oriented in the contact direction with the door trim using a lid of an airbag case that houses the airbag module. However, conventionally known lids for airbag cases do not have sufficient strength and rigidity to support the deployment reaction force of airbags. Therefore, it is necessary to support the lid by directly or indirectly causing the lid of the airbag case to interfere with the center pillar garnish, which depends on the amount of penetration of the center pillar garnish into the vehicle width direction. In this regard, in the present embodiment, since the configuration does not depend on the amount of intrusion of the center pillar garnish 22 in the vehicle width direction as described above, the above-described effects can be obtained.

  In the present embodiment, when the airbag 46 is inflated and deployed, the reaction force plate 30 receives the inflation pressure of the airbag 46 so that the reaction force receiving portion 34 rotates outward in the vehicle width direction around the fixed portion 32 side. Deform to That is, the reaction force plate 30 is configured to direct the airbag 46 that is inflated and deployed toward the door trim 26 located in front of the center pillar garnish 22 while deforming itself. As described above, since the reaction force plate 30 is deformed when the airbag 46 is inflated and deployed, the reaction force plate 30 can be compactly disposed in the door side portion 14A of the seat back 14 at the normal time.

  Furthermore, in the present embodiment, the front end of the reaction force receiving portion 34 is in a state where the vehicle seat 12 is positioned at a reference setting position when the dummy P of the AM 50 is seated on the vehicle seat 12 in a standard sitting posture. A reaction force plate 30 is formed so as to be aligned in the vehicle width direction with respect to the front end line of the flat portion 22A of the center pillar garnish 22. Thereby, it can restrict | limit effectively by the reaction force board 30 that the airbag 46 expand | swells to the center pillar garnish 22, and the airbag 46 can be favorably directed to the door trim 26 side.

  In the present embodiment, the fixing portion 32 is provided with an inner wall 32A that faces the reaction force receiving portion 34, and the rear portion of the airbag module 28 is inserted between the inner wall 32A and the reaction force receiving portion 34. Then, the reaction force plate 30 is assembled to the airbag module 28. Thus, since the reaction force plate 30 can be assembled to the airbag module 28, the reaction force plate 30 can be attached together when the airbag module 28 is attached to the side frame 54 of the seat back 14. . Thereby, manufacture of the vehicle seat 12 can be facilitated.

  In the present embodiment, the inner wall 32A is formed with a bowl-shaped slot 36, and the reaction plate 30 is formed by using the stud bolt 50 of the inflator 48 inserted into the longitudinally extending portion 36B of the slot 36. It is fastened and fixed to the side frame 54. For this reason, when the reaction force plate 30 receives the inflation pressure of the airbag 46, the edge of the longitudinally extending portion 36B of the slot 36 is engaged with the stud bolt 50, so that the inflation pressure of the airbag 46 is good. Can take it.

  Next, a second embodiment of the present invention will be described. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol as the said 1st Embodiment is provided and the description is abbreviate | omitted.

<Second Embodiment>
FIG. 7 shows a vehicle side airbag device 70 according to the second embodiment of the present invention in a plane sectional view corresponding to FIG. In this embodiment, the fixing portion 74 of the reaction force plate 72 is fastened and fixed to the inner end portion in the seat width direction of the rear wall portion 54 </ b> C of the side frame 54 by a bolt 76 and a nut 78. The inner end portion in the seat width direction of the rear wall portion 54C extends obliquely toward the front side of the seat and the center side in the seat width direction.

  The fixing portion 74 extends outward from the fastening fixing portion to the rear wall portion 54C in the vehicle width direction, and the vehicle width direction outer portion extends obliquely toward the seat front side and the vehicle width direction outer side. A reaction force receiving portion 80 extends from the vehicle width direction outer end portion of the fixed portion 74 toward the front of the vehicle. Similar to the reaction force receiving portion 34 according to the first embodiment, the reaction force receiving portion 80 faces the airbag module from the outside in the vehicle width direction.

  In this embodiment, the configuration other than the above is the same as that of the first embodiment. Therefore, this embodiment can also contribute to the improvement of the occupant restraint performance and the robustness of the airbag 46. Moreover, in this embodiment, the reaction force plate 72 is attached to the vehicle by a slight structural change such as forming a bolt hole for fastening and fixing the fixing portion 74 of the reaction force plate 72 in the rear wall portion 54C of the side frame 54. Can be added to the sheet.

<Supplementary explanation of the embodiment>
In each of the above embodiments, the airbag 46 is configured to have a size capable of restraining the shoulder portion S to the waist portion L of the dummy P of the AM 50, but the present invention is not limited to this, and the size of the airbag is not limited thereto. Can be appropriately changed.

  In the first embodiment, the hook-shaped slot 36 is formed on the inner wall 32A of the fixing portion 32 of the reaction force plate 30. However, the present invention is not limited to this, and the slot is linear. A formed configuration may be used. Alternatively, a hole may be formed instead of the slot, and the stud bolt of the inflator may be inserted into the hole.

  Moreover, in each said embodiment, although it was set as the structure by which the corner | angular part was formed in the rear-end part of the reaction force plates 30 and 72, this invention is not restricted to this, From a viewpoint of the safety | security of the passenger | crew of a rear seat, etc. You may form the rear-end part of a reaction force board in circular arc shape by planar view.

  In each of the above embodiments, the front ends of the reaction force receiving portions 34 and 80 are in the vehicle width direction with respect to the front end line 38 of the flat portion 22A of the center pillar garnish 22 in a state where the vehicle seat 12 is located at the reference setting position. Although the reaction plates 30 and 72 are formed so as to line up with each other, the present invention is not limited to this. The position of the front end of the reaction force receiving portion can be changed as appropriate.

  Furthermore, in each said embodiment, it was set as the structure which orient | assigns the airbag 46 which expand | deploys with the reaction force plates 30 and 72 to the door trim 26 side located ahead of a vehicle rather than the center pillar garnish 22 (B pillar garnish). However, the present invention is not limited to this. In a vehicle such as a so-called minivan, the airbag that is inflated and deployed by the airbag module mounted on the second row of vehicle seats is directed to the door trim side ahead of the C pillar garnish by the reaction force plate. Good.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to the above embodiments.

DESCRIPTION OF SYMBOLS 10 Vehicle side airbag apparatus 12 Vehicle seat 14 Seat back 14A Door side side part (vehicle width direction outer side part)
22 Center pillar garnish 22A Plane portion 26 Door trim 28 Airbag module 30 Reaction force plate 32 Fixed portion 32A Inner side wall 34 Reaction force receiving portion 36 Slot 38 Front end line 46 Air bag 48 Inflator 50 Stud bolt 52 Seat back frame 54 Side frame 54A Side wall Part 54B Rear wall part 70 Side airbag device for vehicle 72 Reaction force plate 74 Fixing part 80 Reaction force receiving part

Claims (5)

An airbag module that is disposed on a vehicle width direction outer side of a seat back of a vehicle seat, and inflates and deploys the airbag with a gas pressure generated by an inflator;
A fixing portion fixed to the side frame of the seat back, and a reaction force plate having a reaction force receiving portion that extends from the fixing portion toward the vehicle front side and faces the airbag module from the outside in the vehicle width direction;
With
In a state where the vehicle seat is positioned at a reference setting position when the AM50 dummy is seated on the vehicle seat in a standard seating posture, the front end of the reaction force receiving portion is aligned with the front end line of the flat portion of the pillar garnish. The reaction force plate is formed so as to line up in the vehicle width direction,
The reactive force plate by the strength and rigidity of the fixed portion and the reaction force receiving portion, the airbag to be inflated and deployed, by directing the door trim side located forward of the vehicle than the pillar garnish, the airbag A side airbag device for a vehicle, wherein the side airbag device is brought into contact with the door trim and is not brought into contact with the pillar garnish .   2. The vehicle side air according to claim 1, wherein the reaction force plate is deformed by receiving the inflation pressure of the airbag, so that the reaction force receiving portion rotates outward in the vehicle width direction around the fixed portion side. Bag device. The fixed portion is provided with an inner wall facing the reaction force receiving portion, and a rear portion of the airbag module is inserted between the inner wall and the reaction force receiving portion so that the reaction force plate is moved to the air plate. The vehicle side airbag device according to claim 1 or 2 , wherein the vehicle side airbag device is assembled to a bag module . The said inner wall is formed with a bowl-shaped slot, and the reaction force plate is fastened and fixed to the side frame using a stud bolt of the inflator inserted into the slot . Vehicle side airbag device. The side frame includes a side wall portion and a rear wall portion extending inward in the vehicle width direction from a rear end of the side wall portion, and the fixing portion is fastened and fixed to the rear wall portion. The vehicle side airbag device according to claim 2 .

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