JP2005022473A - Side air bag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side air bag device which can approximately simultaneously move the shoulder and the hip of a passenger to the internal side of a cabin by the deplayment and expansion of an air bag at the time of a side collision. <P>SOLUTION: This side air bag device 13 is constituted of the air bag 16 which is deplayed in a manner to cover almost whole side surface of the passenger P who sits on a front seat 11 when an impact of a specified value or higher is applied to the body side of a vehicle, and an inflater 15 which deplays and expands the air bag 16. In the air bag 16, an inner tube 21 for intensively leading gas which is fed from the inflater 15 to sections corresponding to the shoulder Ps and the hip Ph of the passenger P is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a seat in which an air bag is disposed in a body side portion and a vehicle interior when an impact of a predetermined value or more is applied to the body side portion of the vehicle due to a collision from the side of the vehicle (hereinafter simply referred to as a side collision). It is related with the side airbag apparatus which was made to expand | deploy and expand between. In particular, the present invention relates to a side airbag device in which the airbag is greatly expanded and inflated in the vertical direction so as to cover substantially the entire side surface of an occupant seated on a seat.
[0002]
[Prior art]
As a conventional side airbag device of this type, for example, a configuration as shown in FIGS. 9 and 10 has been proposed (see Patent Document 1).
[0003]
In this conventional configuration, a side airbag device 32 is mounted on the backrest portion 31a of the seat 31 in the vehicle interior. A seam 34 is formed in the airbag 33 of the side airbag device 32. An inflator 35 is disposed on the inner side of the airbag 33 so as to be located at the lower rear side of the seam portion 34, and a gas outlet 35a is formed on the outer periphery of the lower portion of the case.
[0004]
Then, when an impact of a predetermined value or more is applied to the body side portion due to a side collision of the vehicle, the gas ejected from the gas ejection port 35a of the inflator 35 is supplied into the airbag 33. In this case, as indicated by an arrow in FIG. 9, the gas is first introduced into the lower portion corresponding to the waist portion Ph of the occupant P in the airbag 33, and then to the upper portion corresponding to the rib cage portion Pc and the shoulder portion Ps. Are introduced in order. That is, the airbag 33 is deployed and inflated in order from the lower part corresponding to the waist part Ph of the occupant P to the upper part corresponding to the rib cage part Pc and the shoulder part Ps.
[0005]
[Patent Document 1]
International Publication No. WO 02/100690
[0006]
[Problems to be solved by the invention]
However, in this conventional configuration, since the inflation and expansion of the airbag 33 is started from the lower part corresponding to the waist part Ph of the occupant P, the lower part corresponding to the waist part Ph is deployed as shown by the arrow in FIG. At the time of inflation, the waist part Ph of the occupant P is pressed and moved toward the vehicle interior side. Then, due to the reaction, the shoulder portion Ps and the rib cage portion Pc of the occupant P are inclined to the outside of the passenger compartment, and the space between the body side portion 36 of the vehicle and the occupant P may be narrowed. Therefore, when the upper portion corresponding to the shoulder portion Ps and the rib cage portion Pc of the airbag 33 is subsequently deployed and inflated, the energy absorption stroke of the airbag between the vehicle sidewall and the rib portion Pc of the occupant P is increased. (Thickness of the bag) is reduced, which is not preferable in terms of protecting the rib cage portion Pc.
[0007]
Also, in recent vehicles, a variety of seat arrangements are desired.For example, the back portion of the seat can be tilted forward about the horizontal axis at the middle in the vertical direction, and the back side of the back portion can be used as a table. The seats that can be used are being equipped. However, in the above-described conventional configuration, in consideration of the gas flow, the inflator 35 must be disposed at a position closer to the lower side including the middle portion in the vertical direction of the backrest portion when the airbag 33 is deployed and inflated. For this reason, the inflator 35 interferes with the horizontal shaft and the bearing, and cannot cope with the above-described sheet.
[0008]
The present invention has been made based on such a point of interest existing in the prior art. Its main purpose is to move the occupant's shoulder and waist to the vehicle interior side at the same time by deploying and inflating the airbag at the time of a side collision, and to secure more protective strokes and to the thorax. It is in providing the side airbag apparatus which can reduce a burden.
[0009]
Another object of the present invention is that the entire apparatus including the gas generation source can be mounted at a high position in the vicinity corresponding to the occupant's shoulder portion with respect to the backrest portion of the seat. An object of the present invention is to provide a side airbag device that can be easily accommodated.
[0010]
[Means for Solving the Problems and Effects of the Invention]
In order to achieve the above object, the invention according to claim 1 is configured such that when an impact of a predetermined value or more is applied to the body side portion of the vehicle, between the body side portion and the seat disposed in the vehicle interior, A side airbag device comprising an airbag that is deployed so as to cover substantially the entire side surface of an occupant seated on a seat, and a gas generation source that deploys and inflates the airbag. An inner tube for guiding gas mainly to a portion corresponding to the waist is provided.
[0011]
Therefore, according to the first aspect of the present invention, when an impact of a predetermined value or more is applied to the body side portion of the vehicle at the time of a side collision, the gas generated from the gas generation source is passed through the inner tube through the airbag. It is mainly introduced to the part corresponding to the shoulder and waist of the occupant. As a result, the airbag is deployed and inflated almost simultaneously at the portions corresponding to the shoulder and waist of the occupant, and this deployment and expansion makes it possible for the occupant's shoulder and waist to withstand impact from the outside to almost simultaneously. By pushing, the entire body of the occupant can be moved to the vehicle interior side without tilting. Therefore, more protective strokes can be secured, and the burden on the thoracic part of the occupant can be reduced, and the shock can be effectively absorbed while protecting the entire occupant's body including the thoracic part. Can do. In addition, since the gas from the inflator is supplied to the occupant's waist and shoulders after the inside of the inner tube is pressurized, if the inflator is disposed at a position where gas can be supplied into the inner tube, the vertical position thereof Is not constrained. Therefore, the inflator can be disposed at any vertical position, the flexibility of the layout of the side airbag device is improved, and various types of seats can be handled.
[0012]
According to a second aspect of the present invention, in the first aspect of the present invention, the inflator is provided in an inner tube.
Therefore, in the invention described in claim 2, since the vertical position of the inflator can be freely set in the inner tube, and the inner tube also functions as a reinforcing cloth for covering the inflator, the number of parts can be increased. This makes it possible to simplify the configuration.
[0013]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the inner tube is provided with an extension portion that extends to a portion corresponding to at least one of a shoulder portion or a waist portion of an occupant. It is characterized by.
[0014]
Therefore, according to the third aspect of the present invention, the extension portion of the inner tube is extended and deployed in the airbag, whereby the airbag portion corresponding to the shoulder portion and the waist portion of the occupant is surely inflated. Thus, the effect of the first aspect can be further enhanced.
[0015]
The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the gas generation source is provided outside an airbag.
[0016]
Therefore, according to the fourth aspect of the invention, the arrangement position of the gas generation source can be arbitrarily set and changed, and the degree of freedom in design can be increased. In addition, unlike the case where the gas generation source is arranged inside the airbag, a cord outlet from the gas generation source is formed on the outer periphery of the airbag so that it is not necessary to perform stitching or the like. Can be simplified.
[0017]
The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the gas generation source is biased to the upper side of the vehicle with respect to the deployed and inflated position of the airbag. It is characterized by having been arranged.
[0018]
Therefore, according to the fifth aspect of the invention, the entire apparatus including the gas generation source can be mounted at a high position in the vicinity corresponding to the shoulder portion of the occupant with respect to the seat back portion. It is possible to easily deal with various sheets.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Below, 1st Embodiment of this invention is described based on FIGS. 1-4.
[0020]
1 to 4 show a left front seat 11 disposed in a vehicle interior, and the front seat 11 includes a seat portion 11a and a backrest portion 11b. A side airbag device 13 is embedded and disposed inside the case 14 in the left side of the backrest portion 11b of the front seat 11 so as to correspond to the door 12 constituting a part of the body side portion. In the drawing, only the left front seat 11 is shown, but a similar airbag device is also provided inside the right front seat.
[0021]
The side airbag device 13 includes an inflator 15 as a gas generation source fixed in the case 14 and a bag-like airbag 16 attached so as to cover the inflator 15. A gas generator (not shown) for deploying and inflating the airbag 16 is accommodated inside the case of the inflator 15, and a gas ejection hole 15 a as a gas ejection part for ejecting gas is disposed at the lower part of the case of the inflator 15. Is formed.
[0022]
A sensor (not shown) for detecting an impact on the body side portion is electrically connected to the inflator 15 via a control device (not shown). Then, when an impact of a predetermined value or more is applied to the body side portion due to a side collision of another vehicle with respect to the body side portion, a driving current is supplied to the inflator 15 via the control device based on a detection signal from the sensor. Is output. Based on this drive current, a gas is generated from a gas generator in the inflator 15, and the gas is jetted and supplied into the airbag 16 from the gas jet hole 15a.
[0023]
As shown in FIGS. 3 and 4, the airbag 16 is formed by sewing a pair of base fabrics 16a and 16b made of woven fabric or the like so as to form a bag shape as a whole at their peripheral edges. Is housed in the case 14 in a folded state. 16c shows the seam (seam) of the groin. When the inflator 15 is activated and gas is generated, the airbag 16 is deployed and inflated between the door 12 and the front seat 11 and seated on the front seat 11 as shown in FIGS. The side surface of the body of the occupant P is covered almost entirely from the shoulder Ps to the waist Ph.
[0024]
A substantially lateral U-shaped seam portion 17 is formed at approximately the center of the airbag 16 in the vertical direction. The seam portion 17 forms an upper compartment 18 and a lower compartment 19 inside the airbag 16, and an intermediate compartment 20 that opens toward the front of the vehicle between the upper and lower compartments 18 and 19. Is formed. Reference numeral 17 a denotes a seam of the seam portion 17.
[0025]
An inner tube 21 made of woven fabric or the like is accommodated and disposed at the inner rear edge of the airbag 16 so as to extend in the vertical direction of the vehicle. A pair of gas supply ports 21a are provided at the upper and lower portions of the outer peripheral front surface of the inner tube 21. , 21b are formed. As shown in FIG. 4, the inner tube 21 is fixed in the airbag 16 by simultaneously sewing the base end periphery of the inner tube 21 with the seam 16 c when sewing the periphery of the airbag 16. In the inner tube 21, the inflator 15 is disposed so as to be biased to the upper side of the vehicle.
[0026]
Then, after the gas ejected from the gas ejection hole 15a of the inflator 15 is ejected into the inner tube 21 at the time of a side collision of the vehicle, the upper section of the airbag 16 is supplied from the gas supply ports 21a and 21b of the inner tube 21. They are introduced into the chamber 18 and the lower compartment 19 almost simultaneously. Thereafter, the gas in the upper compartment 18 and the lower compartment 19 is introduced into the intermediate compartment 20 so as to bypass both end edges of the seam portion 17. Therefore, as is clear from FIG. 3, the upper compartment 18 and the lower compartment 19 are expanded almost simultaneously and are arranged corresponding to the shoulder Ps and the waist Ph of the occupant P, and then the intermediate compartment 20 is expanded. The occupant P is arranged to correspond to the thorax portion Pc. In this case, the thickness of the intermediate compartment 20 is thinner than the thickness of the upper compartment 18 and the lower compartment 19 by the lateral U-shaped seam portion 17 formed in the airbag 16 as shown in FIG. It is regulated to be. As a result, a space S is formed between the intermediate compartment 20 and the thoracic part Pc of the occupant P.
[0027]
As shown in FIGS. 2 and 3, a vent hole 22 that opens toward the outside is formed at a position corresponding to the intermediate compartment 20 of the airbag 16 where the gas from the inflator 15 reaches almost the end. Is formed. In this case, since the thickness of the intermediate compartment 20 is thinner than the thickness of the upper compartment 18 and the lower compartment 19, the vent hole 22 is sufficiently separated from the inner surface of the door 12 as the body side portion. D is placed. The gas in the intermediate compartment 20 is discharged to the outside from the vent hole 22 so that the internal pressure of the intermediate compartment 20 is adjusted to be lower than the internal pressures of the other compartments 18 and 19.
[0028]
In this case, various conditions such as the gas pressure from the inflator 15 and the size of the vent hole are set so that the internal pressure of each of the compartments 18 to 20 falls within the following range, for example. That is, the various conditions are set so that the internal pressures of the upper and lower compartments 18 and 19 are 150 to 200 kilopascals (kPa) and the internal pressure of the intermediate compartment 20 is 50 to 100 kilopascals (kPa). In this case, the internal pressure of the intermediate compartment 20 is preferably less than or equal to half of the lower compartment 18, 19 of the upper and lower compartments 18, 19. When the internal pressures are equal, it is desirable that the internal pressure be equal to or less than half of the internal pressure. In addition, the value of the internal pressure of each of the compartments 18 to 20 indicates a value set under a so-called static deployment condition under a condition in which an external load such as a collision does not act on the airbag 16.
[0029]
Now, when an impact of a predetermined value or more is applied to the body side part due to a side collision by another vehicle with respect to the body side part of the vehicle, a sensor (not shown) detects it and gas is generated from the inflator 15 based on the detection. . Then, as indicated by arrows in FIGS. 1 and 2, the pressure in the inner tube 21 is increased, and the gas is jetted and supplied from the gas ejection hole 15 a of the inflator 15 into the inner tube 21. Then, the gas is introduced into the intermediate compartment 20 after being introduced into the upper compartment 18 and the lower compartment 19 of the airbag 16 mainly and substantially simultaneously from the pair of upper and lower gas supply ports 21a and 21b. . As a result, as shown in FIG. 4, the upper compartment 18 corresponding to the shoulder Ps of the occupant P and the lower compartment 19 corresponding to the waist Ph are inflated almost simultaneously, and thereafter the intermediate compartment corresponding to the rib cage Pc. Chamber 20 is expanded.
[0030]
In this case, as shown in FIG. 3, the thickness of the intermediate compartment 20 is thinner than the thickness of the upper compartment 18 and the lower compartment 19. Therefore, a space S is formed between the intermediate compartment 20 and the thoracic part Pc of the occupant P. In this state, the upper compartment 18 and the lower compartment 19 allow the shoulder Ps and the waist Ph of the occupant P to be connected to the vehicle. Pushed indoors. For this reason, the passenger | crew P is moved toward the vehicle interior center side toward the vehicle interior side, without inclining. Therefore, even when the body side portion greatly deforms and enters the vehicle interior side, the occupant P can be separated from the body side portion prior to the deformation intrusion to protect the occupant P, and the impact on the thorax Pc is suppressed. Thus, the rib cage portion Pc can be effectively protected.
[0031]
Therefore, according to this embodiment, the following effects can be obtained.
(1) In the side airbag device 13, an inner tube 21 is provided in the airbag 16. Then, when an impact of a predetermined value or more is applied to the body side part due to a side collision of the vehicle, the gas generated from the inflator 15 passes through the inner tube 21 and the shoulder part Ps and the waist part Ph of the occupant P in the airbag 16. And corresponding parts are being introduced at the same time and with emphasis. For this reason, the portion of the airbag 16 corresponding to the shoulder portion Ps and the waist portion Ph of the occupant P can be deployed and inflated almost simultaneously before the intermediate compartment 20. Therefore, by this expansion and expansion, it is possible to push the shoulder portion Ps and the waist portion Ph of the occupant P having resistance to external impacts almost simultaneously, thereby moving the occupant P toward the vehicle interior side without inclining. Thus, the entire body of the occupant can be effectively protected.
[0032]
(2) In the side airbag device 13, since the inflator 15 is provided in the inner tube 21, the inner tube 21 can also function as a reinforcing cloth that covers the inflator 15. Therefore, even if the inner tube 21 is provided, an increase in the number of parts can be suppressed, and the configuration can be simplified. Further, the gas from the gas supply ports 21 a and 21 b of the inner tube 21 is supplied into the airbag 16 after the pressure in the inner tube 21 is increased. Therefore, even if the inflator 15 changes the vertical position in the inner tube 21, the function thereof hardly changes. For this reason, as in the first embodiment, the vertical position of the inflator 15 can be arbitrarily adjusted so that the inflator 15 is biased upward, and the layout design of the side airbag device 13 including the inflator 15 can be freely performed. The degree is improved.
[0033]
(Second Embodiment)
Next, a second embodiment of the present invention will be described with a focus on differences from the first embodiment.
[0034]
Now, in this 2nd Embodiment, as shown in FIG. 5, the upper and lower ends of the inner tube 21 in the airbag 16 are opened, and those opening parts are gas supply ports 21a and 21b. And as shown by the arrow in the figure, after the gas injected from the gas injection hole 15a of the inflator 15 is supplied into the inner tube 21, the upper compartment of the airbag 16 is supplied from these gas supply ports 21a, 21b. Introduced into the chamber 18 and the lower compartment 19 intensively at almost the same time. The gas supply ports 21a and 21b are preferably inclined downwards so that the gas is supplied forward.
[0035]
Therefore, according to the second embodiment, in addition to the effects described in (1) and (2) in the first embodiment, the following effects can be obtained.
(3) In this side airbag device 13, it is only necessary to sew the inner tube cloth into a cylindrical shape, and both the upper and lower ends of the inner tube 21 are sewn and sealed, or the inner tube 21 is There is no need to form a pair of gas supply ports 21a, 21b. Therefore, the structure of the inner tube 21 is simple, and the sewing can be simplified.
[0036]
(Third embodiment)
Next, a third embodiment of the present invention will be described with a focus on differences from the first embodiment.
[0037]
Now, in the third embodiment, as shown in FIG. 6, the inflator 15 is disposed inside the case 14 in a state of being located outside the airbag 16, and a gas ejection hole 15a is provided on the upper end side thereof. Yes. In addition, a downward connecting cylinder portion 24 is formed at the rear end of the outer peripheral upper end of the inner tube 21 and protrudes to the outside of the airbag 16 through an insertion hole 25 provided in the airbag 16. And the upper end part of the inflator 15 is inserted in the connecting cylinder part 24 of this inner tube 21 from the lower part side, and the gas ejected | emitted from the gas ejection hole 15a is supplied in the inner tube 21. FIG.
[0038]
Therefore, according to the third embodiment, in addition to the effects described in (1) and (2) in the first embodiment, the following effects can be obtained.
(4) In this side airbag device 13, since the inflator 15 is disposed outside the airbag 16, the position of the inflator 15 can be arbitrarily set and changed. The degree of freedom in layout design can be increased. Further, unlike the case where the inflator 15 is disposed inside the airbag 16, it is not necessary to form an electrical cord outlet from the inflator 15 on the outer periphery of the airbag 16, so that it is not necessary to perform stitching or the like. Sewing can be simplified.
[0039]
(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with a focus on differences from the first embodiment.
[0040]
Now, in this 4th Embodiment, as shown in FIG. 7, the seam part 17 in the airbag 16 is abbreviate | omitted. Further, extension portions 26 and 27 are formed at both upper and lower ends of the outer peripheral front surface of the inner tube 21 so as to extend to portions corresponding to the shoulder portion Ps and the waist portion Ph of the occupant P, and a gas supply port 26a is formed at the tip thereof. 27a are formed so as to open toward the intermediate portion of the airbag 16. When the gas is ejected and supplied from the gas ejection hole 15 a of the inflator 15 into the inner tube 21, the extension portions 26 and 27 of the inner tube 21 correspond to the shoulder portion Ps and the waist portion Ph of the occupant P in the airbag 16. It is extended to the part. Then, the gas in each extension part 26 and 27 is introduce | transduced into the intermediate part of the airbag 16 from gas supply port 26a, 27a, and the part corresponding to the rib part Pc of the passenger | crew P is expanded.
[0041]
Therefore, according to the fourth embodiment, in addition to the effects described in (1) and (2) in the first embodiment, the following effects can be obtained.
(5) In the side airbag device 13, the extensions 26 and 27 of the inner tube 21 and the intermediate portion outside the inner tube 21 are clearly partitioned by the side wall of the inner tube 21 in the airbag 16. For this reason, not only can the portions of the airbag 16 corresponding to the shoulder portion Ps and the waist portion Ph of the occupant P be inflated almost simultaneously prior to the intermediate portion, but also the inner tube 21 in the initial stage of gas ejection of the inflator 15. And the pressure difference between them and the outside can be increased. Therefore, the effect described in (1) in the first embodiment can be further enhanced.
[0042]
(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with a focus on differences from the first embodiment.
[0043]
In the fifth embodiment, as shown in FIG. 8, a seam portion 28 extending in the lateral direction is formed in the airbag 16, and the lower compartment 19 is formed in the airbag 16 by the seam portion 28. ing. Further, an extension portion 26 is formed at the upper end of the outer peripheral front surface of the inner tube 21 so as to extend to a portion corresponding to the shoulder portion Ps of the occupant P, and a gas supply port 26a is formed at the tip of the intermediate portion of the airbag 16. It is formed so as to open toward the side. A gas supply port 21 b is formed at the lower end of the inner tube 21.
[0044]
When gas is jetted and supplied into the inner tube 21 from the gas jet hole 15a of the inflator 15, the gas is introduced into the lower compartment 19 from the gas supply port 21b at the lower end of the inner tube 21, and the passenger P The portion of the airbag 16 corresponding to the waist portion Ph is inflated. At substantially the same time, the extension portion 26 of the inner tube 21 is extended and deployed in the airbag 16 to a portion corresponding to the shoulder portion Ps of the occupant P. Thereafter, the gas in the extension portion 26 and the gas in the lower compartment 19 are introduced into the intermediate portion of the airbag 16 from the gas supply port 26a, and the portion corresponding to the thoracic portion Pc of the occupant P is inflated. ing.
[0045]
Therefore, according to the fifth embodiment, the same effects as those described in (1), (2), and (5) in each of the above embodiments can be obtained.
(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
[0046]
In each of the above embodiments, the airbag 16 is formed by, for example, a single woven cloth sack-woven without sewing the pair of base fabrics 16a and 16b.
-The vent hole 22 in the said 1st Embodiment etc. is abbreviate | omitted. In this case, the gas in the airbag 16 escapes from the weaves of the base fabrics 16a and 16b.
[0047]
In each of the above embodiments, the inner tube 21 is formed by, for example, a single woven cloth sack-woven without being sewn into a cylindrical shape at the end edge.
In each of the above embodiments, the airbag 16 and the inner tube 21 are formed using another material such as a nonwoven fabric or a synthetic resin sheet that is different from the woven fabric.
[0048]
As shown by a two-dot chain line in FIG. 6, the connecting tube portion 24 at the rear portion of the inner tube 21 is provided upward, and the inflator 15 is inserted into the connecting tube portion 24 from the upper side with the gas ejection hole 15a facing down. . If comprised in this way, the said inflator 15 will be biased and arrange | positioned with respect to the expansion | deployment position of the airbag 16 at the upper side of a vehicle. For this reason, the entire side airbag device 13 including the inflator 15 can be mounted at a high position in the vicinity corresponding to the shoulder portion Ps of the occupant P with respect to the backrest portion 11 b of the front seat 11. Therefore, for example, the seat back can be used as a table by tilting forward on a horizontal axis (not shown) provided in the middle of the upper and lower parts of the seat. Can respond.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a side airbag device according to a first embodiment.
2 is a partially enlarged cross-sectional view of the side airbag device of FIG. 1;
3 is a partial cross-sectional view taken along line 3-3 in FIG.
4 is a partial enlarged cross-sectional view taken along line 4-4 of FIG. 2;
FIG. 5 is a side sectional view showing a side airbag device according to a second embodiment.
FIG. 6 is a side sectional view showing a side airbag device according to a third embodiment.
FIG. 7 is a side sectional view showing a side airbag device according to a fourth embodiment.
FIG. 8 is a side sectional view showing a side airbag device according to a fifth embodiment.
FIG. 9 is a side sectional view showing a conventional side airbag device.
10 is a partial front view of the side airbag device of FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Front seat, 11b ... Backrest part, 12 ... Door which comprises the body side part of a vehicle, 13 ... Side airbag apparatus, 15 ... Inflator as a gas generation source, 15a ... Gas ejection hole, 16 ... Air bag, 18 ... upper compartment, 19 ... lower compartment, 20 ... middle compartment, 21 ... inner tube, 21a, 21b ... gas supply port, 24 ... connecting cylinder, 26, 27 ... extension, P ... passenger, Ps ... shoulder Part, Pc ... thorax, Ph ... waist.

Claims (5)

An airbag that is deployed so as to cover substantially the entire side surface of an occupant seated in the seat between the body side portion and the seat disposed in the passenger compartment when an impact of a predetermined value or more is applied to the body side portion of the vehicle; In a side airbag device comprising a gas generation source for deploying and inflating the airbag,
The side airbag device according to claim 1, wherein an inner tube is provided in the airbag for intensively guiding gas to a portion corresponding to a shoulder portion and a waist portion of an occupant. The side airbag device according to claim 1, wherein an inflator is provided in the inner tube. The side airbag device according to claim 1 or 2, wherein the inner tube is provided with an extension portion extending to a portion corresponding to at least one of a shoulder portion or a waist portion of an occupant. The side airbag device according to any one of claims 1 to 3, wherein the gas generation source is provided outside the airbag. The side air bag according to any one of claims 1 to 4, wherein the gas generation source is disposed so as to be biased to an upper side of the vehicle with respect to a deployed and inflated position of the air bag. apparatus.

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