JPH10291458A - Arranging structure of occupant protective device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfactorily expand a bag when a prescribed high load is applied to a car body side section while an assist grip is arranged on a pillar section. SOLUTION: A slit 60 for making a fitting seat section 46A fragile is formed on the fitting seat section 46A of an assist grip fitting section 46 for fitting an assist grip 52 provided on a pillar garnish 26. When a bag 20 is swelled, the fitting seat section 46A is deformed from the slit 60, and it is easily and smoothly separated from a pillar inner panel 30. The bag swelling space is expanded, and the bag 20 can be satisfactorily swelled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of injecting gas from an inflator when a predetermined high load is applied to a side of a vehicle body, and using the gas to inflate a bag along a pillar portion and a roof side rail portion in a curtain shape. The present invention relates to an arrangement structure of a vehicle occupant protection device.

[0002]

2. Description of the Related Art In order to improve the protection performance of an occupant's head when a predetermined high load is applied to a side of a vehicle body, a bag stored in a folded state over a front pillar portion and a roof side rail portion is provided. An occupant protection device that expands in a curtain shape along a window glass has already been proposed.
Hereinafter, WO 96/2 which discloses this type of occupant protection device is disclosed.
The configuration disclosed in Japanese Patent No. 6087 will be described.

As shown in FIG. 16, this occupant protection device 100 is a long duct 1 that extends from a front pillar portion 102 to a roof side rail portion 104.
06, a bag 112 which is stored in a folded state along the roof side rail portion 104 from the front pillar portion 102 and is fixed to the vehicle body side at a front end fixing point 108 and a rear end fixing point 110, and via a hose 114. Duct 1
06, which is connected to the rear end of the vehicle and injects gas when a predetermined high load is applied to the side of the vehicle body;
And a belt-shaped strap 118 fixed to the rear end of the main body. Further, the above-described bag 112 is configured by connecting a plurality of cells 120 each formed in a substantially cylindrical shape and arranged with the longitudinal direction substantially in the vehicle vertical direction.

According to the above configuration, when a predetermined high load is applied to the side of the vehicle body, gas is ejected from the inflator 116. Therefore, the ejected gas is supplied to the hose 114.
And the folded bag 112 via the duct 106
Into each of the cells 120. As a result, each cell 12
0 inflates in a substantially cylindrical shape with the longitudinal direction substantially in the vehicle vertical direction, whereby the bag 112 is inflated in a curtain shape along the window glass 122. In addition, the bag 112
Is connected to the vehicle body via a strap 118, so that a predetermined tension is applied to a line connecting the front end fixing point 108 and the rear end fixing point of the strap 118, and the rear end of the bag 112 The side is securely arranged inside the upper part of the center pillar portion 124.

[0005]

By the way, for example, R
Considering the case where the above-described occupant protection device is provided for a vehicle such as a V-vehicle in which an assist grip is provided on a front pillar portion for improving getting on and off, a pillar garnish in the front pillar portion is considered. Since the assist grip exists on the development trajectory of the vehicle, it is expected that when the pillar garnish is deployed, the pillar garnish interferes with the assist grip and the deployment amount of the pillar garnish is reduced.

The present invention has been made in consideration of the above-described circumstances, and is intended for an automobile which can swell the bag well when a predetermined high load acts on the side of the vehicle body even when an assist grip is provided on the pillar portion. The object is to obtain an arrangement for the occupant protection device.

[0007]

According to a first aspect of the present invention, there is provided an inflator which is disposed at a predetermined portion of a vehicle body and injects gas when a predetermined high load is applied to a side portion of the vehicle body, a pillar portion and a roof side. A bag which is stored in a folded state along the rail portion and which is swelled in a curtain shape when gas ejected from the inflator flows therein, and which is applied to an automobile having an occupant protection device including: An arrangement structure of an occupant protection device for an automobile,
A pillar body including a pillar body that forms a vehicle body side; and a pillar garnish provided with a predetermined bag storage space on the vehicle interior side of the pillar body and having a mounting seat portion for mounting an assist grip. And further,
A separation means is provided for separating the pillar garnish from the pillar body by separating the mounting seat from the mounting tool for mounting the assist grip by inflation pressure of the bag when the bag is inflated.

According to a second aspect of the present invention, there is provided an automobile occupant protection system according to the first aspect of the present invention.
The separation means is a fragile portion that deforms the fitting through hole in the mounting seat or breaks around the fitting through hole in the mounting seat.

According to a third aspect of the present invention, there is provided an inflator which is disposed at a predetermined portion of a vehicle body and injects gas when a predetermined high load is applied to a side portion of the vehicle body, and is folded along a pillar portion and a roof side rail portion. A bag that is stored in a state and is swelled into a curtain shape by flowing gas ejected from an inflator, and an occupant protection device that is applied to a vehicle having an occupant protection device that includes a bag. An arrangement structure, wherein a pillar body constituting a vehicle body side, and a pillar which is arranged with a predetermined bag storage space inside a vehicle compartment of the pillar body and is detachably fixed to the pillar body by bag inflation pressure A garnish, and further comprising the pillar portion, and further inserting an assist grip fixed to the pillar body into the pillar garnish. Provided tubular spacing means for spacing from the pillar main body while guiding the pillar garnish by the bag inflation pressure, it is characterized in that.

According to a fourth aspect of the present invention, there is provided the vehicle occupant protection device according to any one of the first to third aspects, wherein the pillar garnish is separated from the pillar body by the separating means. In this case, a bag bulging space extending means for increasing the distance between the pillar garnish and the pillar body is provided.

According to a fifth aspect of the present invention, there is provided an occupant protection system for an automobile according to the fourth aspect of the present invention, wherein the assist grip is substantially perpendicular to an indoor surface of the pillar garnish. A pair of legs extending in the room direction, and a grip connecting the tips of these legs,
When the pillar garnish is separated from the pillar body, at the interference portion of the pillar garnish with the grip portion of the assist grip, a recess fitted to the grip portion is provided, whereby the bag is provided. A bulging space expanding means is constituted.

According to a sixth aspect of the present invention, there is provided an occupant protection system for an automobile according to the fourth aspect of the present invention, wherein the assist grip is substantially perpendicular to a surface of the pillar garnish on the indoor side. A pair of first legs extending in the indoor direction, a pair of second legs held substantially in a rearward direction along the indoor surface of the pillar garnish, and a pair of second legs; And a grip portion for connecting the tip portions of the two leg portions to each other.
The bag swelling space expanding means is constituted by being rotatably connected to the legs.

According to a seventh aspect of the present invention, in the vehicle occupant protection device according to any one of the first to sixth aspects, at least a portion of the pillar garnish on the bag storage space side is provided. Is made of a soft resin material.

According to the first aspect of the present invention, when a predetermined high load acts on the side of the vehicle body, gas is blown from an inflator disposed at a predetermined portion of the vehicle body. Therefore, gas flows into the bag stored in a folded state along the pillar portion and the roof side rail portion, and the bag is expanded in a curtain shape along the pillar portion and the roof side rail portion.

Here, in the present invention, since the separating means is provided, the mounting seat for mounting the assist grip provided on the pillar garnish is detached from the mounting tool for mounting the assist grip by the inflation pressure of the bag. Thus, the pillar garnish is released from the restraining force of the mounting tool for mounting the assist grip, and thus can be easily and sufficiently separated from the pillar body. As a result, good bag inflation performance can be obtained even when the assist grip is attached to the pillar portion.

In addition, according to the present invention, since the mounting seat portion of the pillar garnish is detached from the mounting tool for mounting the assist grip, the mounting state of the assist grip is maintained. Therefore, the pillar garnish separated from the pillar main body interferes with (the grip portion of) the assist grip, so that the pillar garnish does not fall into the vehicle interior.

According to the second aspect of the present invention, the above-mentioned separation means is constituted by a fragile portion which deforms the mounting hole of the mounting seat or breaks the periphery of the mounting hole of the mounting seat. Therefore, the structure is simple, and the separation load of the pillar garnish can be arbitrarily changed by adjusting the strength of the fragile portion.

Among the functions of the present invention described in claim 3, the functions up to the bag bulging are the same as those of the first aspect, and therefore will not be described.

Here, according to the present invention, the pillar garnish is arranged with a predetermined bag storage space inside the vehicle body of the pillar body, and the pillar garnish can be detached from the pillar body by bag inflation pressure. The following operation is obtained on the premise that it is fixed to

That is, in the present invention, since the pillar garnish is provided with the cylindrical separating means, when the pillar garnish is separated from the pillar body by the bag inflation pressure, the pillar garnish is guided by the cylindrical separating means. Easily and sufficiently away from the As a result, good bag inflation performance can be obtained even when the assist grip is attached to the pillar portion.

In the present invention, similarly to the first aspect of the present invention, since the mounting state of the assist grip is maintained, the pillar garnish separated from the pillar body may interfere with (the grip portion of) the assist grip. Thus, the pillar garnish is prevented from falling into the vehicle interior.

According to the present invention, when the pillar garnish is separated from the pillar body by the above-described separating means, the bag bulging space expanding means for increasing the separation distance of the pillar garnish from the pillar body is provided. With the provision, the bag swelling space is further expanded.

According to the fifth aspect of the present invention, the assist grip has a pair of legs extending in a room direction substantially perpendicular to the indoor surface of the pillar garnish, and a pair of tips of the legs. The following operation is obtained on the premise that it is configured to include:

That is, in the present invention, when the pillar garnish is separated from the pillar main body, a concave portion is provided at a portion where the pillar garnish interferes with the grip portion of the assist grip, and when the pillar garnish is separated from the pillar main body, The recess is fitted into the grip of the assist grip. For this reason, the bag bulging space is expanded by an amount corresponding to the depth of the concave portion.

According to the present invention, the assist grip has a pair of first legs extending in a room direction substantially perpendicular to the indoor surface of the pillar garnish, and a pair of the first legs on the indoor side of the pillar garnish. A pair of second legs that are held in a state of being extended substantially rearward along the surface, and a grip that connects the distal ends of these second legs. As a premise, the following operation is obtained.

That is, according to the present invention, when the bag is in the non-inflated state (normal state), the assist grip projects substantially to the rear of the vehicle, ie, the pair of second legs are located on the indoor surface of the pillar garnish. Along a substantially rearward side of the vehicle. Therefore, it is possible to ensure good getting on and off.

On the other hand, according to the present invention, the second leg is the first leg.
Since the pillar garnish is separated from the pillar main body and interferes with the second leg because it is rotatably connected to the leg, the second leg and the grip are pressed against the first leg. Rotated in the direction. Thereby, the separation distance of the pillar garnish from the pillar body is increased. Therefore, similarly to the fifth aspect of the present invention, the bag bulging space is expanded.

According to the present invention, since at least a portion of the pillar garnish on the side of the bag storage space is made of a soft resin material, the portion of the pillar garnish on the side of the bag storage space is flexible from a stage where the bag inflation pressure is relatively low. Will be expanded to.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A first embodiment will be described below with reference to FIGS.

FIG. 5 is a perspective view showing the appearance of the interior of a vehicle (for example, an RV vehicle). As shown in this figure, an airbag device 10 as a vehicle occupant protection device is disposed near a connection portion between a front pillar portion (A pillar portion) 12 and an instrument panel 14 and operates to emit gas. An inflator 16 that blows out,
The front pillar 12 is connected to the inflator 16.
And a bag 20 stored in a folded state along the roof side rail portion 18.

The inflator 16 is connected to a center control unit (not shown) disposed below the console box. The center control unit is connected to a sensor (not shown) (for example, an acceleration sensor) provided near the lower end of the center pillar (B pillar) 22. Therefore, when a predetermined high load acting state on the vehicle body side is detected by the sensor, the inflator 16 is operated by the center control unit. Further, as a specific configuration of the inflator 16, a gas generating agent enclosing type in which a gas is ejected by burning a gas generating agent enclosed therein, or a high pressure gas is produced by breaking a partition provided therein. A high-pressure gas-filled type to be ejected can be applied. In the present embodiment, the inflator 16 is disposed near the connection between the front pillar portion 12 and the instrument panel 14. However, the inflator is disposed at a predetermined portion of the vehicle body, and the inflator 16 is provided with a tube or the like. It may be connected to the front end.

When the configuration of the bag 20 is briefly described, the bag 20 is stored in a folded state in a long case 50 to be described later, and in this state, the bag 20 extends from the front pillar 12 to the roof side rail 18. Is stored. More specifically, the front end of the bag 20 is connected to the inflator 16 so that gas flows therein, and the middle portion is connected to the front pillar 12 and the roof side rail 1.
8, and a rear end portion thereof is disposed near a quarter pillar portion (C pillar portion) (not shown).
The bag 20 is formed such that the inflated shape in a side view is substantially a parallelogram. Specifically, by folding one base cloth cut so as to have a substantially parallelogram shape on both sides of the fold at the fold and sewing the peripheral edges thereof, or by forming a substantially parallelogram shape By suturing the peripheral edges of the two base cloths cut into
An outer shell of the bag 20 is configured.

Here, FIGS. 1 and 2 show a cross-sectional structure of the front pillar portion 12 (a cross-sectional structure at a mounting position of an assist grip 52 described later), and FIG. An enlarged sectional view of the mounting structure of the pillar garnish 26 is shown.

As shown in these figures, the front pillar portion 12 is provided with a front pillar 24 constituting the vehicle body side.
A long pillar garnish 26 disposed on the vehicle interior side of the front pillar 24 and functioning as an interior material;
It is comprised including. The front pillar 24 includes a pillar outer panel 28 having a substantially hat shape in cross section disposed outside the vehicle compartment, a pillar inner panel 30 having a substantially flat plate shape disposed inside the vehicle compartment, and a portion between the pillar outer panel 28 and the pillar inner panel 30. And a pillar reinforcement 32 having a substantially hat-shaped cross section arranged in a sandwiched state. In addition, front pillar 2
An opening weather strip 34 is elastically fitted on the rear end flange portion of the front pillar 24.
A molding 38 for sealing the end of the windshield glass 36 is provided in a contact state on the front end flange portion side.

On the other hand, the pillar garnish 26 is formed in a convex curved shape protruding into the vehicle cabin, and is provided with a predetermined bag storage space 40 (see FIG. 1) between the pillar garnish 26 and the pillar inner panel 30. Garnish rear part 26A
And a garnish front portion 26B that covers the front end flange portion of the front pillar 24. The pillar garnish 26 is made of a soft resin material, and a skin (not shown) is adhered to the indoor side surface. Further, the terminal portion of the garnish rear portion 26A is elastically locked to the above-mentioned opening weather strip 34.

The lower end of the pillar garnish 26 is inserted and locked at the side end of the instrument panel 14. Further, a clip seat 42 is provided at an appropriate interval on the rear surface (surface on the vehicle exterior side) of the intermediate portion of the pillar garnish 26.
(See FIG. 3 (B)) is integrally formed, and a clip 44 (fixing means or fixing means in a broad sense) attached to the clip seat 42 is engaged with the pillar inner panel 30 to thereby form a pillar garnish. 26 is detachably fixed to the pillar inner panel 30.

At a predetermined upper position in the widthwise middle portion of the above-mentioned pillar garnish 26, a pair of bottomed cylindrical assist grip mounting portions 46 which are recessed in a substantially prismatic shape toward the pillar inner panel 30 are vertically arranged. I have. In a state where the pillar garnish 26 is temporarily fixed to the pillar inner panel 30 by the clip 44, the mounting seat portion 46A constituting the bottom of the assist grip mounting portion 46 is separated from the pillar inner panel 30 by a predetermined distance and parallel to the pillar inner panel 30. Are located. The mounting seat 46A and the pillar inner panel 3
The fixing pieces 20A and 50A of the bag 20 and the case 50 housed in the bag storage space 40 are inserted into the gap 48 formed between the bag 20 and the bag storage space 40.

More specifically, a tongue-shaped fixing piece 20A is formed integrally with the bag 20 at appropriate intervals, and a resin case 50 for accommodating the folded bag 20 is correspondingly provided. A tongue-shaped fixing piece 50A is integrally formed. Then, with these fixing pieces 20A and 50A superimposed, the mounting seat 46A and the pillar inner panel 30 are mounted.
Is inserted in the gap 48 between the two. The case 50
The outer corner 50B of the rear end is thinned, and is configured to be breakable at a predetermined bag inflation pressure.

The above-mentioned pair of assist grip mounting portions 4
6, a pair of legs 52A extending in a room direction substantially perpendicular to the indoor surface of the pillar garnish 26.
And a grip portion 52 connecting the tip portions of these leg portions 52A.
B, and a substantially U-shaped assist grip 52 configured to include B is attached. Specifically, a pair of leg portions 52A of the assist grip 52 is inserted into the corresponding assist grip mounting portion 46 and abuts against the mounting seat portion 46A. Then, in this state, the fixing bolt 54 is inserted into the leg portion 52A from the indoor side, and the weld nut 5 previously welded to the outdoor surface of the pillar inner panel 30 is inserted.
6, the assist grip 52 is attached to the pillar inner panel 30 together with the bag 20 and the case 50.
Attached to. In other words, the bag 20 and the case 50 are provided with fixing bolts 54 for attaching the assist grip.
And the assist grip 52 by the weld nut 56
(See FIGS. 1 and 3A).

Further, in the present embodiment, as shown in an enlarged view in FIG.
The radial dimension of the insertion hole (circular hole) 58 formed in the mounting seat portion 46 </ b> A for inserting the fixing bolt is set to be larger than the shaft diameter of the fixing bolt 54. Note that the dimensional relationship between the insertion hole 58 and other components is as follows: “shaft diameter of fixing bolt 54 <insertion hole 5
8 <the head diameter of the fixing bolt 5>. Further, a pair of slits 60 cut radially outward are integrally formed at positions in the insertion hole 58 that face each other in the radial direction. Therefore, the rigidity of the peripheral portion 62 of the insertion hole 58 in the mounting seat portion 46A is low (that is, intentionally weakened).

In the above configuration, the pillar garnish 26 is fixed to the pillar inner panel 30 by the fixing bolt 54, and the pillar garnish 26 is also fixed to the pillar inner panel 30 by the clip 44. This is performed at a portion where the fixing pieces 20A and 50A are not formed in the bag 20 and the case 50). However, as described above, the lower end of the pillar garnish 26 is attached to the instrument panel 1
4 is inserted and locked at the side end of the clip 4,
Even if 4 is omitted and the pillar garnish 26 is fastened to the pillar inner panel 30 together with the fixing bolt 54 at the position where the assist grip 52 is disposed, the mounting at the upper and lower two points is ensured, so that there is no problem.

Next, the operation and effect of this embodiment will be described. When a predetermined high load acts on the side of the vehicle body, this state is detected by a sensor and output to the center control unit. For this reason, the operating current is supplied to the inflator 16 from the center control unit,
The inflator 16 is operated. As a result, a predetermined amount of gas is ejected from the inflator 16 and flows into the bag 20 from the front end thereof. As a result, bag 2
0 is the front pillar section 12 to the roof side rail section 1
It is swelled as a curtain-shaped inflatable body along 8, and is interposed between the vehicle body side part and the occupant's head. Thereby, the occupant's head is protected by the inflated bag 20.

The general operation of the airbag device 10 is as described above. However, the present embodiment is characterized by the behavior of the pillar garnish 26 at the beginning of the expansion of the bag 20, and will be described in detail below.

As described above, in the present embodiment, the radial dimension of the insertion hole 58 formed in the mounting seat 46A of the assist grip mounting portion 46 is set to be larger than the shaft diameter of the fixing bolt 54, and A pair of slits 60 in the hole 58
Is formed, the rigidity of the peripheral portion 62 of the insertion hole 58 is reduced. For this reason, when gas begins to flow into the bag 20 and the case 50 is broken from the corner 50B and deployed, and when the bag inflation pressure acting on the garnish rear portion 26A further reaches a predetermined value or more, FIG. 2 is shown. As described above, the peripheral portion 62 of the insertion hole 58 in the mounting seat portion 46A is pulled, so that the insertion hole 58 is deformed in a direction in which the diameter is increased. Thereby, the mounting seat 46A is detached from the fixing bolt 54, and the pillar garnish 26 is released from the restraining force by the fixing bolt 54 and the weld nut 56. As a result, the clip 44 that temporarily fixes the pillar garnish 26 to the pillar inner panel 30 is released by the pressing force received from the bag 20, and the pillar garnish 26 moves away from the pillar inner panel 30 toward the indoor side.

Since the attachment state of the assist grip 52 to the pillar inner panel 30 is still maintained, the pillar inner panel 3 of the pillar garnish 26 is maintained.
The separation operation from zero is restricted (restricted) by the portion of the pillar garnish 26 facing the grip portion 52B of the assist grip 52 abutting on the outdoor surface of the grip portion 52B of the assist grip 52. Therefore, in the case of the present embodiment, the separation distance of the pillar garnish 26 is A (see FIG. 2), and a bag bulging space corresponding to the separation distance A can be secured.

As can be understood from the above description, according to this embodiment, the assist grip 52 is attached to the front pillar portion 12.
When a predetermined high load is applied to the side of the vehicle body, a bag bulging space corresponding to the separation distance A can be secured even when the
Can be swelled favorably.

When the pillar garnish 26 separates from the pillar inner panel 30, the mounting seat 46A slides along the leg 52A of the assist grip 52. Therefore, if a configuration is adopted in which the mounting seat 46A is weakened, a guide function when the pillar garnish 26 is separated from the pillar inner panel 30 is obtained (in other words, the mounting seat 46A functions as a guide unit). In addition, if the mounting seat 46A is configured to be weak, the pillar garnish 26 can be prevented from dropping into the vehicle interior.

Further, in this embodiment, since the pillar garnish 26 is made of a soft resin material, the rear garnish 26A (the portion on the side of the bag storage space 40) can be flexibly deployed from the stage where the bag inflation pressure is relatively low. it can. As a result, the swelling performance of the bag 20 can be improved.

In this embodiment, the pair of slits 60 are formed in the mounting seat portion 46A of the assist grip mounting portion 46 to deform the insertion hole 58.
The present invention is not limited to this, and any configuration that weakens the mounting seat can be applied. For example, in the embodiment shown in FIG. 6, an insertion hole 66 formed at the center of the mounting seat portion 64A of the assist grip mounting portion 64 has a fixing bolt 54.
Instead of having the same diameter as the shaft diameter of the
A substantially L-shaped slit 68 is formed at each of the four corners of the periphery of 4A when viewed from the front. According to the above configuration, when a tensile force equal to or more than a predetermined value acts on the mounting seat 64A, the connecting portion 70 between the ends of the adjacent slits 68 breaks and the mounting seat 64
The whole A is separated from the assist grip mounting portion 64.
Therefore, the same effect can be obtained by the above configuration.

Supplementary to the effect, in both the configuration shown in FIG. 4 and the configuration shown in FIG. 6, the weak portion (slit 6) is formed simultaneously with the formation of the pillar garnish 26.
0, 68) can be said to be a simple configuration, and the structure can be simplified and the cost can be reduced.
In addition, the strength of the mounting seats 46A and 64A can be easily adjusted by adjusting the number of slits 60 and 68 formed, the slit width, and the like. Therefore, the separation load of the pillar garnish 26 can be arbitrarily changed, and can be set to a desired value.

The same effect can be obtained by adopting a structure in which only the portion where the fastening force of the fixing bolt 54 acts is thinned instead of forming the slits 60 and 68 described above.

In the present embodiment, the fixing seat 54 of the pillar garnish 26 is fixed by using a fixing bolt 54 for fixing the assist grip 52 and a weld nut 56.
6A and the configuration in which the bag 20 and the case 50 are fastened together to the pillar inner panel 30, but in relation to the invention described in claim 1, the bag 20 and the case 50 are separately and independently fixed to the pillar inner panel 30. Only the assist grip 52 and the mounting seat 46A of the pillar garnish 26 may be fastened to the pillar inner panel 30 together. [Second Embodiment] Hereinafter, a second embodiment will be described with reference to FIG. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 7, this embodiment is characterized in that the assist grip mounting portion 74 provided on the pillar garnish 72 is formed in a cylindrical shape. That is, the mounting seat 46A in the first embodiment described above.
Has a configuration that does not exist in the present embodiment. Accordingly, the leg 52A of the assist grip 52 is inserted into the assist grip mounting portion 74, and in this state, the bottom 76 of the leg 52A of the assist grip 52 is fixed to the pillar inner panel 30 together with the bag 20 and the case 50 by the fixing bolt 54.
And a weld nut 56 for fastening together.

In this embodiment, since the restraining force of the fixing bolt 54 and the weld nut 56 does not act on the pillar garnish 72, the pillar garnish 72 is fixed to the pillar inner panel by a fixing tool such as the clip 44 or fixing means. It will be fixed to 30. Also,
Also in the present embodiment, the pillar garnish 72 is made of a soft resin material.

According to the above configuration, when the bag 20 starts to inflate when a predetermined high load is applied to the side of the vehicle body and a bag inflation pressure equal to or more than a predetermined value acts on the garnish rear portion 72A, the clip 44 is moved from the pillar inner panel 30. Be separated.
Thus, the pillar garnish 72 is easily and smoothly separated from the pillar inner panel 30 while the cylindrical assist grip mounting portion 74 is guided by the pair of legs 52A of the assist grip 52. Note that the pillar garnish 72 is separated from the pillar inner panel 30 until the indoor surface of the pillar garnish 72 interferes with the grip portion 52B of the assist grip 52, so that a sufficient separation distance can be obtained. As a result, as in the first embodiment described above, even when the assist grip 52 is attached to the front pillar portion 78, a sufficient bag swelling space is secured when a predetermined high load acts on the vehicle body side. And good bag swelling performance can be obtained. Third Embodiment Hereinafter, a third embodiment will be described with reference to FIGS. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 8 shows a front pillar portion 82 composed of the front pillar 24 described in the first embodiment and the pillar garnish 80 according to the present embodiment attached to the interior of the vehicle, and the assist described in the first embodiment. Grip 5
2 is shown in a perspective view, and FIG.
5 shows a cross-sectional structure of the front pillar portion 82 in the grip portion 52B of the assist grip 52.

As shown in these figures, in this embodiment, a recess 84 is formed in the pillar garnish 80 so as to be recessed toward the pillar inner panel 30 at a position facing the grip portion 52B of the assist grip 52. There are features. The width dimension of the concave portion 84 substantially matches the width direction size of the grip portion 52B, and the longitudinal dimension of the concave portion 84 is set substantially equal to the longitudinal size of the grip portion 52B. Note that, also in the present embodiment, the pillar garnish 80 is made of a soft resin material.

According to the above configuration, at the initial stage of inflation of the bag 20, gas begins to flow into the bag 20, the case 50 is broken off from its corner 50B and deployed, and then the bag inflation acting on the rear garnish 80A is further increased. When the pressure reaches a predetermined value or more, the same operation as in the first embodiment described above (not shown because the positions of the cross-sectional lines are different in these figures, but the mounting seat 46A is made weak by weakening the mounting seat 46A). Is removed from the fixing bolt 54, and the clip 44 that temporarily fixes the pillar garnish 80 to the pillar inner panel 30 is removed), and the pillar garnish 80 is moved toward the vehicle interior with respect to the pillar inner panel 30. Go away.

Here, in this embodiment, the grip portion 52B of the assist grip 52 in the pillar garnish 80 is used.
10 and 11, when the pillar garnish 80 is separated from the pillar inner panel 30 by the inflation pressure of the bag, the recessed portion of the pillar garnish 80 is formed as shown in FIGS. 84 is the grip portion 5 of the assist grip 52
2B. Thereby, as shown in FIG. 11, the separation distance of the pillar garnish 80 is B (> A), and a bag bulging space corresponding to the separation distance B can be secured. As a result, according to the present embodiment, the bag swelling space can be expanded more than in the first embodiment. Therefore, according to the present embodiment,
The bag 20 can be smoothly expanded when a predetermined high load acts on the side of the vehicle body.

Further, according to the present embodiment, the degree of expansion of the bag bulging space can be adjusted by adjusting the depth of the recess 84. [Fourth Embodiment] Hereinafter, a fourth embodiment will be described with reference to FIGS.
An embodiment will be described. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 12 is a perspective view showing a state in which a rotatable assist grip 88 according to this embodiment is disposed on the front pillar portion 86. FIG. 13 is an enlarged view of the assist grip 88. A perspective view and the like are shown. Further, FIG. 14 is a perspective view showing a state of the pillar garnish 89 and the assist grip 88 when the bag is inflated, and FIG. 15 is a cross-sectional structure of the front pillar portion 86 at a mounting position of the assist grip 88. It is shown.

As shown in these figures, in this embodiment, when the assist grip 88 which protrudes largely toward the rear side of the vehicle for improving the getting on and off is adopted,
It is characterized in that a configuration for expanding the bag bulging space is added as in the third embodiment described above.

Specifically, the assist grip 88 includes a pair of first leg portions 90A (see FIG. 15) extending in a room direction substantially perpendicular to the indoor side surface of the pillar garnish 89, and the pillar garnish 89. A leg 90 divided into a pair of second legs 90B extending substantially rearward of the vehicle along a surface on the indoor side of the vehicle, and a gripper 92 connecting the distal ends of the second legs 90B. It is comprised including. First leg 90
A is inserted into an assist grip mounting portion 93 provided on the pillar garnish 89 and having an open bottom. The fixing bolt 54 is inserted into the first leg portion 90A and screwed into the weld nut 56 so that the bag 2
The case 0 and the case 50 are fastened to the pillar inner panel 30 together with the bottom 94 of the first leg 90A.

The second leg 90B is connected to the first leg 90A.
Is rotatably supported about a hinge pin 95 protruding from a side wall at an upper end portion of the base member. A return spring 96 grasped as a biasing means or a holding means in a broad sense is wound around the hinge pin 95, and the second leg 90B and the grip 92 of the assist grip 88 are stretched substantially toward the rear of the vehicle. Rotation bias is applied in order to keep it in the extended position. Further, a protruding stopper 97 is integrally formed on the rear end surface of the base end portion of the second leg portion 90B, and is usually a lid-like member disposed below the hinge pin 95 under the urging force of the return spring 96. Stopper plate 98 (FIG. 15)
Reference). Therefore, in the assist grip 88, the stopper 97 is
15 cannot be further rotated in the direction opposite to the direction of arrow D in FIG.

According to the above configuration, in the initial stage of inflation of the bag 20, gas begins to flow into the bag 20, the case 50 is broken off from its corner 50B and deployed, and then the bag inflation acting on the rear garnish 89A is further increased. When the pressure reaches or exceeds a predetermined value, the clip 44 that temporarily fixes the pillar garnish 89 to the pillar inner panel 30 is released. Therefore, the pillar garnish 89 moves away from the pillar inner panel 30 toward the indoor side. Here, in the present embodiment, the leg 90 of the assist grip 88 is used.
Is divided into a first leg 90A and a second leg 90B rotatable with respect to the first leg 90A, and both are rotatably connected around the hinge pin 95. Therefore, the pillar garnish is formed by the bag inflation pressure. When the 89 is separated from the pillar inner panel 30, as shown in FIGS. 14 and 15, the second leg 90 </ b> B of the assist grip 88 is pressed toward the vehicle interior by the pillar garnish 89. Therefore, the grip portion 92 and the second leg portion 90B rotate around the hinge pin 95 toward the windshield glass 36 (the direction of the arrow D in FIG. 15). Thereby, as shown in the figure, the separation distance of the pillar garnish 89 becomes C (> A), and a bag bulging space corresponding to the separation distance C can be secured. As a result, according to the present embodiment, the bag swelling space can be expanded more than in the first embodiment. Therefore, according to the present embodiment,
The bag 20 can be smoothly expanded when a predetermined high load is applied to the side of the vehicle body while ensuring good getting on and off properties.

In this embodiment, the bottom of the assist grip mounting portion 93 provided on the pillar garnish 89 is opened, and the first leg 90A of the assist grip 88 is inserted into the assist grip mounting portion 93. Bottom 94 of one leg 90A and fixing piece 20A of bag 20
And fixing piece 50A of case 50 to pillar inner panel 3
However, the present invention is not limited to this. The assist grip mounting portion having the weakened mounting seat portion as described in the first embodiment is also used. It is also possible to adopt a configuration in which they are tightened together.

In the first embodiment described above, the entire pillar garnish 26 is made of a soft resin material. However, at least a portion of the pillar garnish on the bag storage space side may be made of a soft resin material. This point is similarly applied to the second and subsequent embodiments.)

Further, in the first embodiment described above, the assist grip 52 is provided on the front pillar portion 12 in the configuration in which the airbag device 10 is provided along the roof side rail portion 18 from the front pillar portion 12. However, the present invention is not limited to this. For example, the airbag device may be arranged from the front pillar portion to the quarter pillar portion (C pillar portion) via the roof side rail portion. Configuration (ie,
To protect not only the head of the occupant seated in the front seat but also the head of the occupant seated in the rear seat, an inflator is provided on the quarter pillar side as necessary. The present invention can also be applied to a case where an assist grip is provided on the quarter pillar portion (the same applies to the second and subsequent embodiments).

[0069]

As described above, the arrangement structure of the vehicle occupant protection device according to the first aspect of the present invention provides a pillar main body constituting the vehicle body side and a predetermined bag storage space on the vehicle cabin side of the pillar main body. And a pillar garnish provided with a mounting seat portion for assist grip mounting, and further comprising a pillar portion, and further, when the bag is inflated, the mounting seat portion is mounted by the inflation pressure of the bag. By separating the pillar garnish from the pillar body by detaching it from the mounting fixture for
Even when the assist grip is provided on the pillar portion, there is an excellent effect that the bag can be swelled well when a predetermined high load is applied to the vehicle body side portion.

According to a second aspect of the present invention, there is provided an occupant protection system for an automobile according to the first aspect of the present invention, wherein the mounting hole in the mounting seat portion is deformed or the mounting portion in the mounting seat portion is changed. Since the separation means is constituted by the fragile portion which breaks the periphery of the insertion hole, the structure can be simplified, and the separation load of the pillar garnish can be set to a desired value.

According to a third aspect of the present invention, there is provided an occupant protection system for an automobile, comprising: a pillar body constituting a vehicle body; and a predetermined bag storage space on the interior side of the pillar body. A pillar garnish that is fixed and detachable from the pillar body by the bag inflation pressure,
And further comprising a cylindrical separating means for inserting the assist grip fixed to the pillar body into the pillar garnish, and separating the pillar garnish from the pillar body while guiding the pillar garnish by the bag inflation pressure. Therefore, similarly to the first aspect of the present invention, even when the assist grip is provided on the pillar portion,
There is an excellent effect that the bag can be swelled well when a predetermined high load acts on the side of the vehicle body.

According to a fourth aspect of the present invention, there is provided the vehicle occupant protection device according to any one of the first to third aspects, wherein the pillar garnish is separated from the pillar body by the separating means. At this time, since the bag bulging space expanding means for increasing the separation distance of the pillar garnish from the pillar body is provided, the bag bulging space can be further expanded, and as a result, a predetermined It has an excellent effect that the bag can be smoothly expanded when a high load is applied.

According to a fifth aspect of the present invention, there is provided an occupant protection system for an automobile according to the fourth aspect of the present invention, wherein the assist grip is provided so that the assist grip is substantially perpendicular to the indoor surface of the pillar garnish. A pair of legs that extend in the direction, and a grip that connects the tips of these legs, and, when the pillar garnish is separated from the pillar body, the assist grip of the pillar garnish By providing a concave portion to be fitted to the grip portion at the interference portion with the grip portion, the bag bulging space expanding means is configured, so that the degree of expansion of the bag bulging space is adjusted by adjusting the depth of the concave portion. It has an excellent effect that it can be performed.

According to a sixth aspect of the present invention, there is provided the vehicle occupant protection device according to the fourth aspect of the present invention, wherein the assist grip is provided so that the assist grip is substantially perpendicular to the indoor surface of the pillar garnish. A pair of first leg portions extending in the direction, a pair of second leg portions that are held substantially in a rearward direction along the indoor side surface of the pillar garnish, and a second leg portion thereof. A grip portion that connects the tip portions of the legs,
And the second leg portion is rotatably connected to the first leg portion, thereby forming a bag inflating space expanding means. This has an excellent effect that the bag can be expanded smoothly when a predetermined high load is applied to the bag.

According to a seventh aspect of the present invention, there is provided the vehicle occupant protection device according to any one of the first to sixth aspects, wherein at least a portion of the pillar garnish on the bag storage space side is provided. Since it is made of a soft resin material, it is possible to expand the bag storage space side portion flexibly from the stage where the bag inflation pressure is relatively low, and as a result, it is possible to improve the bag inflation performance. Having.

[Brief description of the drawings]

FIG. 1 is a view showing a cross-sectional structure of a front pillar portion at a mounting position of an assist grip according to a first embodiment.
1 is a transverse sectional view taken along line 1-1 of FIG.

FIG. 2 is a cross-sectional view corresponding to FIG. 1, showing a state in which the bag has expanded from the state shown in FIG.

FIG. 3A is an enlarged cross-sectional view of a main part of a mounting structure of a pillar garnish at an assist grip disposing position, and FIG. 3B is a main part of an enlarged mounting structure of a pillar garnish using clips. It is an expanded sectional view.

FIG. 4A is an enlarged perspective view showing a mounting seat portion in a pillar garnish, and FIG. 4B is an enlarged front view of the mounting seat portion.

FIG. 5 is a perspective view showing the exterior appearance of a vehicle equipped with an airbag device as the vehicle occupant protection device according to the first embodiment.

FIG. 6A is an enlarged perspective view showing another embodiment of a mounting seat in a pillar garnish, and FIG. 6B is an enlarged front view of the mounting seat.

FIG. 7 is a view showing a cross-sectional structure of a front pillar portion at an attachment position of an assist grip according to a second embodiment.
It is a cross-sectional view of the front pillar part corresponding to FIG.

FIG. 8 is an enlarged perspective view of a front pillar portion mainly showing structures of an assist grip and a pillar garnish according to the third embodiment.

9 is a cross-sectional view taken along line 9-9 in FIG. 8, showing a cross-sectional structure of a front pillar portion in a grip portion of the assist grip.

FIG. 10 is an enlarged perspective view corresponding to FIG. 8, showing a state in which the pillar garnish is separated from the state shown in FIG. 8 and the bag is expanded.

FIG. 11 shows a state in which the concave portion is fitted to the grip portion.
FIG. 12 is a transverse sectional view taken along line 11-11 of FIG.

FIG. 12 is an enlarged perspective view of a front pillar portion mainly showing structures of an assist grip and a pillar garnish according to the fourth embodiment.

13A is an enlarged perspective view showing the assist grip shown in FIG. 12 in an enlarged manner, and FIG. 13B is a partial enlarged view mainly showing a return spring.

FIG. 14 is an enlarged perspective view corresponding to FIG. 12, showing a state in which a pillar garnish is separated from a state shown in FIG. 12 and a bag is bulged.

FIG. 15 is a view showing a state in which the assist grip is rotated.
FIG. 15 is a transverse sectional view taken along line 15-15 of FIG. 4;

FIG. 16 is a schematic configuration diagram showing a vehicle occupant protection device according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Airbag device (automobile occupant protection device) 12 Front pillar part (pillar part) 16 Inflator 18 Roof side rail part 20 Bag 24 Front pillar (pillar main body) 26 Pillar garnish 40 Bag storage space 46A Mounting seat part 52 Assist grip 52A Leg 52B Gripping part 54 Fixing bolt (mount) 58 Insertion hole 60 Slit (separation means, weak part) 64A Mounting seat 66 Insertion hole 68 Slit (separation means, weak part) 72 Pillar garnish 74 Assist grip attachment part (separation) Means) 78 Front pillar part (pillar part) 80 Pillar garnish 82 Front pillar part (pillar part) 84 Depression (bag swelling space expanding means) 86 Front pillar part (pillar part) 88 Assist grip 89 Pillar garni Gerhard 90A first leg 90B second leg 92 gripper 95 hinge pin (bag-expansion space expansion means) 96 return spring

Claims (7)

[Claims] 1. An inflator which is disposed at a predetermined portion of a vehicle body and injects gas when a predetermined high load is applied to a side portion of the vehicle body, is stored in a folded state along a pillar portion and a roof side rail portion, and is inflated. A bag that is bulged into a curtain shape by flowing gas ejected from the bag, and an occupant protection device for a vehicle that is provided with an occupant protection device including: A pillar body including a pillar body constituting a vehicle body side; and a pillar garnish provided with a predetermined bag storage space on the vehicle interior side of the pillar body and having a mounting seat portion for mounting an assist grip. Further, when the bag is inflated, the mounting seat is detached from the mounting device for mounting the assist grip by the inflation pressure of the bag, so that the Provided separating means for separating the over garnish from the pillar main body, mounting structure of the occupant protection device for a motor vehicle, characterized in that. 2. The mounting device according to claim 1, wherein the separating unit is a fragile portion that deforms the mounting hole in the mounting seat or breaks the periphery of the mounting hole in the mounting seat. Of occupant protection system for automobiles. 3. An inflator which is disposed at a predetermined portion of a vehicle body and which blows out gas when a predetermined high load is applied to a side portion of the vehicle body, and is stored in a folded state along a pillar portion and a roof side rail portion, and the inflator is provided. A bag that is bulged into a curtain shape by flowing gas ejected from the bag, and an occupant protection device for a vehicle that is provided with an occupant protection device including: A pillar body that constitutes the vehicle body side, and a pillar garnish that is disposed with a predetermined bag storage space on the vehicle interior side of the pillar body and is detachably fixed to the pillar body by bag inflation pressure. Construct the pillar part, and further insert the assist grip fixed to the pillar body into the pillar garnish, and by the bag inflation pressure While guiding the color garnish is provided a tubular spacing means for spacing from the pillar main body, mounting structure of the occupant protection device for a motor vehicle, characterized in that. 4. A bag expanding space expanding means for increasing a separation distance of the pillar garnish from the pillar body when the pillar garnish is separated from the pillar body by the separating means. An installation structure of the vehicle occupant protection device according to any one of claims 1 to 3. 5. The assist grip includes a pair of legs extending in a room direction substantially orthogonal to a room surface of the pillar garnish, and a grip unit that connects tips of these legs. When the pillar garnish is separated from the pillar body, at the interference portion of the pillar garnish with the grip portion of the assist grip, a concave portion fitted to the grip portion is provided, whereby the bag is formed. The arrangement structure of the vehicle occupant protection device according to claim 4, wherein a bulging space expanding means is configured. 6. The vehicle according to claim 6, wherein the assist grip includes a pair of first legs extending in a room direction substantially perpendicular to a room surface of the pillar garnish and a vehicle substantially along the room surface of the pillar garnish. A pair of second legs that are held in a state of being extended rearward, and a grip portion that connects the distal ends of the second legs to each other. The arrangement structure of the vehicle occupant protection device according to claim 4, wherein the bag bulging space expanding means is constituted by being rotatably connected to the first leg portion. 7. The vehicle occupant protection device according to claim 1, wherein at least a portion of the pillar garnish on the bag storage space side is made of a soft resin material. Construction.