JP2000289556A - Side airbag device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a side airbag comprising a lower bag part and an upper bag part which are formed integrally with each other by enabling the head of an occupant to be surely received by the upper bag part of the side airbag, and enabling the torso and the head of the occupant to be effectively received, respectively, by the lower bag part and the upper bag part regardless of the height of the occupant, etc. SOLUTION: A side airbag is divided by a dividing line 57 into a bag part 53 for the torso and a bag part 54 for the head, so that an occupant's head is received by the bag part 54 for the head after the occupant's torso is received by the bag part 53 for the torso. The dividing line 57 is inclined to cross a belt line 6 in such a manner that its front part is located below the belt line 6 while its rear part is located above the belt line 6, so that rigidity to resist bending is produced on the deployed bag part 54 for the head. The side airbag thus resists breaking at the portion of the dividing line 57 and the performance of the bag part 54 for the head to receive the head MH is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side airbag device for a vehicle, and more particularly, to a dividing line for separating a lower bag portion and an upper bag portion with an air passage therebetween, and a vertical position of the dividing line in an expanded state. And those in which the inclination angle with respect to the horizontal is appropriately set.

[0002]

2. Description of the Related Art Conventionally, in a side airbag device of a vehicle, when a side collision is detected by a side collision detection sensor,
Immediately after the side collision, before the occupant makes a secondary collision with the side door, gas for deployment generated from the inflator is supplied to the side airbag, and the side airbag deploys between the occupant and the side door, and the deployment occurs. The occupants are received and protected by the side airbags.

[0003] Here, in the case of a side collision that is collided from the side, first, the occupant's trunk moves to the collision side, and the occupant's head moves to the collision side with a short delay therefrom. In a conventional side airbag device configured to receive the occupant's torso and head with a single side airbag that deploys in a bag shape, the entire side airbag deploys almost simultaneously at the time of a side collision. Therefore, when the deployment timing of the side airbag is set for the torso, the head is received by the side airbag after the inflation peak, and the deployment timing of the side airbag is set for the head. Then, the trunk is received by the side airbag that is not completely inflated. As a result, it is difficult to ideally protect both the torso and the head of the occupant with one bag-shaped side airbag.

On the other hand, a side airbag device including a body airbag, a head airbag independent of the body airbag, and two inflators for both airbags is also put to practical use. ing. However, since it is necessary to provide two sets of airbags and an inflator, the structure is complicated, the size is increased, and the manufacturing cost is high. Moreover, it is very difficult to independently and appropriately set the deployment timing of the trunk airbag and the deployment timing of the head airbag.

[0005] Therefore, the upper part of the side airbag having an integral structure is divided by a dividing line except for the ventilation path, so that the body bag part (lower bag part) and the head part bag part (upper bag). ), An inflator is connected to the torso bag, the torso bag is first deployed immediately after the side collision, and then the head bag is deployed a short time later. Side airbag devices are in practical use. This type of side airbag device includes a seat-mounted side airbag device with a side airbag unit including a side airbag and an inflator mounted on a seat back, and a door-mounted side airbag device with a side airbag unit mounted on a side door. Airbag devices are in practical use.

In the seat-mounted side airbag device, the relative position of the occupant and the side airbag in the front-back direction does not change even if the seat is slid back and forth to change the front-back position. Although it is not necessary to increase the size, it is necessary to increase the strength and rigidity of the inner frame of the seat back of the seat device, which is disadvantageous in terms of assembly, manufacturing cost, and repair. On the other hand, in the door-mounted side airbag device, even when the distance between the side door and the occupant is narrow, the side airbag can be reliably deployed between the side door and the occupant, and the side door has strength and rigidity. Since it is high and has an internal space, it is advantageous in terms of assembly and manufacturing costs.

The door-mounted side airbag device disclosed in Japanese Patent Application Laid-Open No. 9-39710 discloses a torso bag portion (lower bag portion) for protecting the occupant's torso, and protects the occupant's head. Head bag part (upper bag part) for
A dividing line (coupling portion) for dividing a boundary portion between the two bag portions by opening a ventilation path. The dividing line is formed by suturing a pair of membrane materials of the side airbag with an air passage therebetween, and when the side airbag is deployed, the dividing line extends in the horizontal direction to form a belt line at the upper end of the side door body. Near the upper side of the
Two ventilation paths are formed. Incidentally, Japanese Patent Laid-Open No. 6-2273
No. 48 also discloses a side airbag device having substantially the same configuration.

[0008]

In the side airbag device described in the above two publications, the portion of the split line of the deployed side airbag has low rigidity and is easily bent. Moreover, when the side airbag is deployed, the division line faces in the horizontal direction and is located near the upper side of the belt line. Because of this, the split line is positioned parallel to the swing axis where the occupant's head swings sideways during a side collision, so that the head bag deployed at the side collision can be fully If the side airbag is not supported, the side airbag is likely to be bent at a portion of the division line near the upper side of the belt line, and it is difficult to enhance the protection function of the head bag portion for protecting the occupant's head.

In particular, when the vehicle is an open roof type vehicle or when the window glass of the side door is broken, the bag for the head cannot be sufficiently supported by the window glass or the vehicle body. Therefore, it is conceivable to increase the deployment pressure of the side airbag or to expand the ventilation path at the part of the division line to promote the deployment of the head bag part. In that case, there is a problem that the deployment timing of the side airbag becomes excessively early, and the protection function for protecting the occupant's head is reduced.

The side airbag device disclosed in Japanese Patent Application Laid-Open No. 6-227348 is equipped with a large side airbag,
In the deployed state, the split line of the side airbag is positioned near the upper side of the belt line, and the upper end and the rear end of the deployed side airbag are configured to be supported by the window frame. A side airbag is required. Also, since the dividing line of the side airbag extends in the horizontal direction, for example, in the case of an occupant with a small sitting height such as a child, the position of the head is lower than that of the head airbag, and the head is used for the torso. There is a possibility that a case where the airbag receives the airbag may occur.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an upper bag portion of a side airbag in which a lower bag portion and an upper bag portion are integrally formed so that the head portion of the occupant can be reliably received. The lower bag portion and the upper bag portion can effectively receive the torso and head of the occupant irrespective of the size of the height and the like, and the side airbag can be downsized.

[0012]

The side airbag device for a vehicle according to the first aspect includes a side airbag that is deployed between the occupant and the side door when the side collision detection unit of the vehicle detects a side collision. In the side airbag device, the side airbag has a lower back portion deployed at an inside position of a door body of the side door, and an upper bag portion deployed at a position inside a window glass above an upper end belt line of the door body. Are formed integrally with each other, and a dividing line is formed in the side airbag so as to partition the upper and lower portions with an air passage of a predetermined size between the two airbag portions. And is formed so as to be inclined and oriented in the front-rear direction of the vehicle body.

The side airbag device may be a door-mounted side airbag device or a seat-mounted side airbag device. In the case of a door-mounted side airbag device, it is desirable to incline so that the dividing line in the deployed state of the side airbag becomes lower toward the front, and the dividing line intersects with the belt line of the side door. It is desirable. The division line may be formed in a straight shape, may be formed in a curved shape, may have a single continuous configuration, or may have a configuration in which the division line is divided into a plurality by one or a plurality of ventilation paths. When the side airbag device is deployed, gas generated by the inflator is first supplied to the lower bag portion, and from the lower bag portion to the upper bag portion through a predetermined size ventilation path at the dividing line. Supplied.

In this side airbag device, when a side collision is detected by the side collision detection means, the lower bag portion of the side airbag is moved to the side airbag before the occupant does not collide with the side door due to the side collision. The upper bag portion is deployed at an inner position of the window glass above the upper end belt line of the door body. The upper bag part expands slightly behind the lower bag part because the gas flow from the lower bag part to the upper bag part is regulated by a dividing line that separates the upper and lower parts with a ventilation path between the two bag parts. I do.

In the unfolded state, the dividing line is inclined with respect to the horizontal direction and formed in the front-rear direction, so that the dividing line does not become parallel to the upper end belt line of the door body, and the occupant's head in the event of a side collision. Is not parallel to the swinging axis of swinging, so that the side airbag is less likely to be bent at the position of the division line. That is, since the deployed upper bag portion has rigidity against bending, even when the upper bag portion is not supported by a window glass, a vehicle body, or the like above the belt line, the side airbag is unlikely to break at the division line portion, The performance of the upper bag part receiving the head is improved. As a result, the protection function of protecting the occupant's head with the upper bag portion at the time of a side collision can be significantly improved.

Since the protection function of the upper bag portion is improved,
In addition to being able to reduce the size of the side airbag,
This side airbag device can be applied to an open roof type vehicle and a pillarless type vehicle. Further, since the size of the side airbag can be reduced, the deployment timing can be set so that the deployment timing of the upper bag portion does not delay from the deployment timing of the lower bag portion.

According to a second aspect of the present invention, in the vehicle side airbag device according to the first aspect of the present invention, the split line is formed such that at least a part thereof is located below the belt line in an expanded state. It is characterized by the following. Therefore, in the unfolded state, at least a part of the dividing line is located at a position corresponding to the inside of the door body, so that it is more difficult to fall outward when receiving the occupant's head, and the protection function for protecting the head is provided. It will be even higher.

According to a third aspect of the present invention, in the vehicle side airbag device according to the first aspect of the present invention, the dividing line is inclined so as to become lower toward the front in the deployed state. When the side airbag device is mounted on the side door, it is common to adjust the seat to the front position as the height or sitting height of the occupant, including the occupant of the child, is reduced, so that the dividing line becomes lower toward the front. Thus, the division line can be located on the side of the occupant's neck regardless of the height or the like of the occupant. Also, when the side airbag device is installed in the seat back, the head position will be lower if the upper body is raised forward, regardless of the height, so by forming a dividing line that is lower toward the front,
The dividing line can be located on the side of the occupant's neck regardless of the height or the like of the occupant. As a result, regardless of the height of the occupant, the lower bag portion can be deployed at a position corresponding to the trunk, and the upper bag portion can be deployed at a position corresponding to the head.

According to a fourth aspect of the present invention, in the vehicle side airbag device according to the second aspect of the present invention, the dividing line is formed so as to intersect the belt line in a deployed state in a side view of the vehicle body. It is assumed that.
As described above, since the division line intersects with the belt line, at least a part of the division line is located at a position corresponding to the inside of the door body when the vehicle is in the unfolded state. The side airbag is less likely to fall over, and the side airbag is less likely to bend along a line parallel to the belt line, and the protection function of protecting the head by the upper bag portion can be enhanced.

According to a fifth aspect of the present invention, in the vehicle side airbag apparatus according to the third aspect of the present invention, the side airbag is mounted on the side door, and the side airbag is located at a front-rear position of a seat slidable back and forth. Irrespective of the length of the seat, the front and rear lengths can be deployed between the occupant seated on the seat and the side door. Since the side door has excellent rigidity and strength and has an internal space, the side door can be easily equipped with a side airbag device, and even if the distance between the side door and the occupant is narrow,
The side airbag can be reliably deployed between the side door and the occupant. In addition, even if a small occupant such as a child slides the seat forward, the front and rear lengths of the side airbags are sufficient, and the occupant is inclined so that the dividing line becomes lower toward the front. Regardless of the size of the occupant, the lower bag portion can be deployed at a position corresponding to the body of the occupant, and the upper bag portion can be deployed at a position corresponding to the head.

According to a sixth aspect of the present invention, in the vehicle side airbag device according to the fourth aspect of the present invention, the split line has a front portion located below the belt line in a deployed state and a rear portion located below the belt line. Are also formed so as to be located on the upper side. Claim 3,
4, the front part of the dividing line is located at a position corresponding to the inside of the door body, and the rear part of the dividing line is located at a position corresponding to the inside of the window glass.
When receiving the occupant's head, the upper bag part is more difficult to fall outward, the side airbag is hard to bend along the line parallel to the belt line, and the upper bag part enhances the protection function to protect the head it can.

According to a seventh aspect of the present invention, in the vehicle side airbag device according to the fifth aspect of the present invention, the position and the inclination angle of the dividing line in the deployed state correspond to the front-back position of the seat, and the occupant seated on the seat. Is set so that the dividing line is located on the side of the neck of the head. In other words, for the occupants of various heights, the split line in the deployed state can be located on the side of the neck, and the lower bag portion is reliably deployed at the position corresponding to the torso, and the The upper bag portion can be reliably deployed at the position where the upper bag portion is located.

According to an eighth aspect of the present invention, in the vehicle side airbag device according to the first aspect of the present invention, at least the front end portion of the upper end of the side airbag in the deployed state is inclined so as to become lower toward the front substantially parallel to the dividing line. It is characterized by doing. That is, assuming that the seat is adjusted to the front position as the height or the like of the occupant decreases, at least the front end portion of the upper end of the side airbag may be inclined so as to be lower toward the front substantially in parallel with the division line. The head of the occupant can be reliably received by the upper bag portion of the side airbag, and the size of the side airbag can be reduced, which is advantageous in cost.

According to a ninth aspect of the present invention, there is provided a side airbag device for a vehicle according to the first aspect, wherein the vehicle is vertically arranged at a side of a front seat and behind a front side door. Is a pillarless type vehicle having a height substantially equal to the height of the belt line. In this pillarless type vehicle (for example, an open roof type vehicle), since the upper bag portion that has received the occupant's head at the time of a side collision cannot be supported by the pillar, the configuration and operation of claim 1 are very important. Become.

According to a tenth aspect of the present invention, in the vehicle side airbag device according to the first aspect of the present invention, the side airbag has a thickness in the vehicle width direction at a portion of the split line in the expanded state in the vehicle width direction at other portions. It is characterized in that it is configured to be smaller than the thickness. Therefore,
In the unfolded state, the rigidity of the part of the division line is low, and when the division line is parallel to the belt line,
Although there is a possibility that the upper bag portion may fall outside during a side collision, the protection function of the upper bag portion can be increased to a necessary level because of the configuration of claim 1, and the structure of the dividing line Is simple and advantageous in terms of manufacturing cost.

According to an eleventh aspect of the present invention, in the vehicle side airbag device according to the first aspect of the present invention, the side airbag is formed in a bag-like shape by joining the peripheral portions of the door-side bag film material and the passenger-side bag film material. It is characterized in that both the bag membrane materials are joined while leaving a ventilation path at the part of the division line. The structure of the side airbag and the structure of the dividing line are simplified, and the reliability is excellent.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is an example in which the present invention is applied to a side airbag device mounted on a side door of a pillarless type (open roof type) automobile. As shown in FIGS. 1 to 4, a pillar-less type automobile C is fixed to a lower portion of a seat with respect to a vehicle body 1, a pair of left and right side doors 2, and a lower rail 3 a mounted inside the vehicle body 1 and fixed to a vehicle body floor. Upper rail 3b
Left and right 1 that can slide back and forth by sliding
A pair of seats 3 (see FIGS. 2 and 3) is provided, and each side door 2 has an airbag unit 40 of a side airbag device 5.
Is equipped.

The side door 2 has a door body 10, an electric window glass 11, a door lock mechanism (not shown), and the like.
Is installed. A door trim 12 is mounted on the inner surface side of the door main body 10, and an armrest 13 is provided at a rear middle portion of the door trim 12 in the vertical direction. 2 and 3, the driver's seat side is illustrated, and reference numeral 9 in FIG. 2 indicates a steering wheel.

As shown in FIGS. 4 and 5, the door trim 12
A rectangular opening 1 in the upper part of the armrest 13
5 is formed, and the airbag unit 40 is
Of the casing 41 is fitted from the inside of the door body 10 and the cover member 43 of the casing 41 is
When the side collision occurs, the side airbag 50 is broken and the side airbag 50 is deployed to the vehicle compartment side.

As shown in FIG. 5 and FIG.
Is composed of an inner panel 20, an outer panel 21, and various reinforcing members for reinforcing these panels 20, 21.
In the interior of the door body 10, a space for storing the window glass 11 is provided, and impact bars 22 and 23 in the form of metal pipes directed in the front-rear direction included in the reinforcing member and a shock absorbing material made of a foamed resin material or the like are provided. Members 24 and 25 are provided.

Next, the side airbag device 5 will be described. As shown in FIGS. 7 to 9, the side airbag device 5 includes a side collision detection sensor 30 that is a side collision detection unit that detects a side collision, and an occupant when the side collision detection sensor 30 detects a side collision. A single side airbag 50 that is deployed between the side door 2 and an inflator 70 that supplies gas for deployment to the side airbag 50, and a single airbag that stores the side airbag 50 and the inflator 70 is provided. The airbag unit 40 is mounted inside the rear portion of the side door 2.

As shown in FIG. 7, the side collision detection sensor 30 includes a sensor section 31, a microcomputer (M / C) 32 connected to the sensor section 31, and an inflator connected to the microcomputer 32 when a side collision occurs. An integrated side collision detection sensor including a drive unit 33 that outputs a drive current to operate the unit 70 is configured, and is incorporated below the center pillar 7 of the side door 2 as shown in FIG. As shown in FIGS. 1 and 2, the shape of the lower portion of the center pillar 7 is formed so as to become wider in the front-rear direction as approaching the side sill 8, and is fixed to the side sill 8.

As shown in FIGS. 5 to 6 and FIGS. 8 to 9, the airbag unit 40 is disposed between the inner panel 20 and the door trim 12, has a substantially rectangular shape in side view, and has a lateral width in the vehicle width direction. Has a relatively narrow casing 41, and the casing 41 is formed of a metal case member 42 that is opened toward the passenger compartment.
And a cover member 43 made of synthetic resin for covering the case member 42 from the vehicle interior side.
An airbag housing portion 44 is formed in a substantially upper half of the inside of the airbag unit 40, that is, in an upper portion of the airbag unit 40, and an inflator housing portion 45 is formed in a vicinity of a lower end of the inside of the casing 41, that is, in a lower portion of the airbag unit 40. It is formed so as to protrude from the airbag storage section 44 toward the vehicle compartment.

That is, the airbag storage section 44 is formed so as to protrude more toward the inner panel 20 than the inflator storage section 45. The side airbag 50 is stored in the airbag storage portion 44 in a state of being folded in a roll shape, and the inflator storage portion 45 provided below the airbag storage portion 44 has an inflator facing in the front-rear direction. 70 are stored. Furthermore, these two storage portions 44,
A gas passage portion forming portion 46 formed of a casing 41, a cover member 43, and the like, and forming a gas passage portion 59 with a concave portion 47 in which a part of the cover member 43 is recessed inward is provided.

The airbag unit 40 is attached to the inner panel 20 such that the upper and lower portions of the airbag unit 40 are displaced substantially parallel to the vehicle compartment side when a side collision occurs. Installed. That is, as shown in FIGS. 5, 6, and 8, the first opening 26 is formed at the rear portion of the inner panel 20 at a portion corresponding to the protruding portion of the airbag housing portion 44 of the airbag unit 40. At the same time, a second opening 27 is formed in a portion opposing a lower portion of the inflator housing portion 45 immediately below the inflator housing portion 45, and a rectangular frame-shaped reinforcing member 28 surrounding the first opening 26 is provided from the inside in the vehicle width direction. Installed.

The airbag unit 40 is disposed inside the impact bar 22 in the vehicle width direction, and the airbag housing 44 faces the first opening 26 from the inside in the vehicle width direction. A pair of left and right lower mounting portions 40a, 40b, which are lower mounting means, provided at substantially the same height as the passage portion forming portion 46 (gas passage portion 59), and provided above the lower mounting portions 40a, 40b. Left and right pair of upper mounting portions 40c and 40d as the upper mounting means
And attached to the reinforcing member 28 from the inside in the vehicle width direction. As described above, all the mounting portions 40 a to 40 d are connected and fixed to the reinforcing member 28.

At the upper end of the cover member 43 constituting the airbag housing portion 44, a long V-shaped groove is cut in the front-rear direction from the inside of the airbag housing portion 44 to form a broken portion 48. The side airbag 50 breaks the part 48 and is deployed in the vehicle interior. Here, as shown by the solid line in FIG. 2, the seat back 4 of the seat 3 is moved from the forward movement position indicated by the two-dot chain line to the airbag unit 4.
It is configured to be slidable so as to move backward from zero.

As shown in FIGS. 5 and 8, at least a part of the inflator storage portion 45 is disposed in the internal space at the upper end of the armrest 13 with the airbag unit 40 mounted on the side door 2. Lower mounting portions 40a, 40
The impact absorbing member 24 is provided so that the upper end of the impact absorbing member 24 faces between the impact bar 22 and the impact bar 22, and the impact absorbing member 25 is provided on the outer side in the vehicle width direction corresponding to the airbag storage portion 44.

As shown in FIG.
Of the airbag unit 40 is sandwiched by the concave portion 47 of the airbag unit 40, and the gas passage portion forming portion 46 of the airbag unit 40 is formed.
Between the armrest 13 and the first displacement allowing portion 16 that allows the gas passage portion forming portion 46 to be displaced toward the cabin at the time of a side collision.
Is provided. Further, between the inflator storage part 45 and the armrest 13 which is a part of the door trim 12 of the side door 2, a second displacement permitting part 17 which permits the displacement of the inflator storage part 45 toward the passenger compartment at the time of a side collision is provided. Is provided.

Here, in a normal side collision, the outer panel 2
1. Since the side impact load is transmitted to the inside of the door body 10 via the impact bar 22, the inner panel 20, etc., the side impact load input position for the airbag unit 40 is a position mainly corresponding to the impact bar 22. At the same time, a collision load also acts on the upper part of the impact bar 22. As described above, the upper end of the shock absorbing member 24 is provided between the lower mounting portions 40 a and 40 b and the impact bar 22, and the shock absorbing member 25 is provided corresponding to the airbag housing 44.

Thus, at the time of a collision, the impact bar 22, which is the side collision load input position, and the two mounting portions 40a (40)
b) When the lower portion of the airbag unit 40 moves toward the passenger compartment via the shock absorbing member 24 due to the difference in the distance to 40c (40d), the upper portion is mounted via the reinforcing member 28 by the shock absorbing member 25. The portions 40c and 40d also move to the vehicle compartment side, and the airbag unit 40 moves substantially parallel to the vehicle compartment side as shown by a two-dot chain line in FIG.

As shown in FIGS. 8 to 11, the side airbag 50 is formed in a bag shape capable of holding gas tightly by joining the peripheral portions of the door-side bag film material 51 and the occupant-side bag film material 52. Is formed. Furthermore, the side airbag 50
Is a torso bag portion 53 which is a lower bag portion deployed to a position corresponding to the occupant's torso MB, and a head bag portion 54 which is an upper bag portion to be deployed to a position corresponding to the occupant's head MH. And a dividing line 57 that vertically separates the two bag portions 53 and 54 by opening and closing two air passages 55 and 56, and a gas outlet 71 of an inflator 70 in a lower end portion of the side airbag 50. Also has a tether 58 (regulator) provided on the front side. Here, the body bag portion 53 and the head bag portion 54 are integrally formed of the two bag film materials 51 and 52.

The inflator 70 contains, for example, a gas generating agent in a cylindrical case that is long in the front and rear directions, and when a side collision occurs, the gas generating agent reacts by a driving current output from the driving unit 33 of the side collision detection sensor 30. The gas generator has a structure in which the gas for deployment is instantaneously generated, and a plurality of gas outlets 71 for blowing the gas for deployment into the side airbag 50 are provided at a rear portion of the inflator 70. The lower end of the side airbag 50 is fixed in the inflator storage part 45 so as to cover the inflator 70 in an airtight manner, and near the lower end of the side airbag 50, corresponding to the gas passage part forming part 46 of the casing 41. A gas passage portion 59 for supplying gas from the inflator 70 to the side airbag 50 is formed.

As shown in FIG. 9, the side airbag 50
Is configured to expand upward and diagonally rearward from the airbag unit 40, and in a deployed state, a front end is formed in a front vertical portion 60 that rises substantially vertically upward from the front end of the airbag unit 40, and a rear end Is formed in a rear inclined portion 61 extending linearly upward and obliquely rearward from the rear end of the airbag unit 40, and an upper front end is formed by a dividing line 57.
It is formed in the inclined part 62 which inclines linearly so that it may become lower toward the front substantially in parallel with the front part, and is formed in the horizontal part 63 of the horizontal straight line continuous with the inclined part 62 in the upper end part, and the rear end part of the upper end part Are formed in a curved portion 64 connected to the rear inclined portion 61 and the horizontal portion 63.

The side airbag 50 is configured to be deployable between the occupant seated on the seat 3 and the side door 2 even if the occupant's front / rear position is changed by adjusting the front / rear position of the seat 3. ing. That is, the seat 3 mounted on the vehicle body 1 of the present embodiment is configured to be slidable back and forth between a solid line position and a chain line position shown in FIG. 2, and the side airbag 50 is moved to any sliding position. Even if adjusted, it has a front-to-rear length that can be deployed between the occupant seated on the seat 3 and the side door 2.

The dividing line 57 is formed in the front-rear direction by connecting the door-side bag film material 51 and the occupant-side bag film material 52 by linear stitching (may be joined) over a predetermined distance. The side airbag 50 has a dividing line 5
The thickness of the portion 7 in the vehicle width direction is smaller than the other thicknesses in the vehicle width direction. And the side airbag 50
In the unfolded state, the front side is lower with respect to the horizontal direction, that is, a straight line is inclined higher toward the rear side, and intersects with the belt line 6 of the side door 2, and
It is formed so as to be directed near the lower end of the curved portion 64 provided near the upper end of the rear end.

The gap between the dividing line 57 and the rear inclined portion 61 is configured to be narrower upward. The inclined portion 62 is formed in an inclined shape substantially parallel to the dividing line 57. Here, the position and the inclination angle of the dividing line 57 in the unfolded state will be described. The front part of the dividing line 57 is located below the belt line 6 and the rear part of the dividing line 57 is located above the belt line 6. It is set so that the dividing line 57 is always located on the side of the occupant's neck.

That is, the front / rear position of the seat 3 is adjusted according to the height of the occupant. In this case, if the position of the seat 3 is adjusted forward as the height or the like decreases, the trajectory of the position of the occupant's neck Is inclined so as to become lower toward the front, and the position and the inclination angle of the dividing line 57 in the developed state are set so as to follow the trajectory. When the side airbag 50 is deployed, the tether 58 includes a door-side bag film material 51 and an occupant-side bag film material 52 at a portion on a straight line connecting the gas outlet 71 of the inflator 70 and the front air passage 55. Are formed by suturing and linking a predetermined length of horizontal straight line, and by restricting the flow of gas into the front portion of the side airbag 50, the gas flows into the rear portion of the side airbag 50 preferentially. I will be.

Here, as is apparent from FIG. 9, the side airbag 50 is deployed between the occupant seated on the seat 3 and the side door 2 irrespective of the front or rear sliding position of the seat 3. It has a front-to-rear length as much as possible, so that the front-to-back distance from the inflator 70 to its front end in the deployed state is greater than the front-to-back distance. A gas outlet 71 is provided on the side portion, and the gas outlet 7 is provided.
1, a tether 58 is formed in front of
7 is formed in a linear shape that is inclined higher toward the rear side, so that gas from the inflator 70 is supplied to the side airbag 5.
0 is preferentially flowed into the rear portion, and the deployment of the rear portion is promoted when the side airbag 50 is deployed.

Next, the operation and effects of the side airbag device 5 configured as described above will be described. When a side collision is detected by the side collision detection sensor 30 in the side airbag device 5 in a case where another vehicle or the like collides with the vehicle C, the occupant is caused to collide with the side door 2 due to the side collision. During the instant, the gas for deployment generated from the inflator 70 is supplied to the side airbag 50, and is deployed from the upper part of the airbag unit 40 toward the passenger compartment. Between the occupant and the occupant, and the occupant is received and protected.

First, at the time of the side collision of the car C,
As described above, since the side collision load is transmitted through the outer panel 21, the impact bar 22, the inner panel 20, and the like, the side collision load input position to the airbag unit 40 is mainly the impact bar 22, but at the same time, Some collision load also acts on the upper part of the impact bar 22. That is, the side impact load of the impact bar 22 is buffered by the shock absorbing member 24 and then transmitted to the lower mounting portions 40a and 40b via the reinforcing member 28, and the side impact load acting on the impact absorbing member 25 is also buffered. After that, it is transmitted to the upper mounting portions 40c and 40d via the reinforcing member 28.

At this time, the rigidity of the attachment structure for attaching the airbag unit 40 to the inner panel 20 is strengthened by the reinforcing member 28 that surrounds the first opening 26, and the inner panel around the first opening 26 is strengthened. Since the strength and rigidity of the airbag unit 20 are also enhanced,
0 can be reliably prevented from being damaged such as local deformation. by the way,
The airbag storage portion 44 protrudes toward the inner panel 20 from the inflator storage portion 45, and the first opening 26 facing the protruding portion is formed in the inner panel 20, so that the airbag storage portion 44 extends from the inner panel 20. , And the side airbag 50 can be prevented from being damaged.

Further, the airbag unit 40 is provided at the gas passage portion forming portion 46 forming a gas passage portion 59 for supplying gas from the inflator 70 to the side airbag 50 through the inner mounting portions 40a and 40b. Since it is fixed to the panel 20, it is possible to prevent the side impact load from acting on the inflator 70 and also prevent the gas passage portion forming portion 46 from being bent in a bent shape. Further, since the first displacement permitting portion 16 is provided between the gas passage portion forming portion 46 and the armrest 13, when the side impact load acts and the airbag unit 40 is displaced toward the passenger compartment, the gas passage portion is displaced. The displacement of the portion forming portion 46 toward the passenger compartment is caused by the first displacement allowing portion 16.
Therefore, the gas passage portion forming portion 46 can be prevented from being compressed or deformed into a bent shape.

In addition, the inflator storage section 45 is formed so as to protrude more toward the passenger compartment than the airbag storage section 44, and the upper end of the inflator storage section 45 is disposed in the internal space of the armrest 13 of the side door 2. Therefore, it is possible to prevent a side collision load from acting on the inflator storage section 45 at the time of a side collision, and to prevent the inflator storage section 45 from being damaged. Further, since the second displacement allowing portion 17 is provided between the inflator storage portion 45 and the armrest 13,
When the side impact load acts and the airbag unit 40 is displaced toward the passenger compartment, the displacement of the inflator storage part 45 toward the passenger compartment is permitted through the second displacement permitting part 16.
A compressive load is less likely to act on the inflator storage portion 45, and is less likely to be damaged.

Further, since the second opening 27 facing the lower portion of the inflator housing 45 is formed in the inner panel 20, the inner panel 20 can be moved from the inflator housing 4
5 can be buffered to prevent the inflator 70 from being damaged. Due to this, in the event of a collision,
The airbag unit 40 retains its shape without any damage or bend in the airbag unit 40, and the impact bar 22 and the upper and lower mounting portions 40a are maintained.
Due to the difference in the distance to (40b) and 40c (40d), the airbag unit 40
When the lower part moves toward the passenger compartment, the upper mounting parts 40c and 40d also move toward the passenger compartment via the shock absorbing member 25, and the airbag unit 40 is indicated by a two-dot chain line in FIG. As shown, the vehicle moves substantially parallel to the passenger compartment.

As a result, the inflator 7 in the event of a side collision is
0 from the inflator 70 and the side airbag 5
The gas passage portion 59 extending to zero can be reliably prevented from being damaged, and the side airbag 50 can be reliably deployed at the time of a side collision. When the side airbag 50 is deployed, the tether 58 restricts the expansion of the tether 58 and the side airbag 50 in the vicinity thereof in the vehicle width direction, and the front air passage 55 from the gas outlet 71 of the inflator 70. The flow of gas to the
7 and the rear inclined portion 61 allow the gas blown out from the gas outlet 71 to preferentially and quickly flow into the rear portion of the side airbag 50, and further increase the flow velocity of the gas toward the upper rear portion. For this reason, the deployment delay of the rear portion of the side airbag 50 with respect to the front portion can be reliably suppressed.

That is, at the time of a side collision, the torso bag 53 and the head bag 5 are received such that the torso MB is first received by the side airbag 50 and then the head MH is received.
4, two air passages 55 and 56 located in front and behind.
The upper and lower dividing lines 57 restrict the flow of gas from the trunk bag 53 to the head bag 54 during deployment, and the head bag 54 Expansion can be delayed. At this time, the torso bag portion 53 is deployed at a position inside the door body 10 of the side door 2, and the head bag portion 54 is deployed at a position inside the window glass 11 above the belt line 6 of the door body 10. Is done.

On the other hand, as described above, the side airbag 50 can be deployed between the occupant seated on the seat 3 and the side door 2 regardless of which of the front and rear sliding positions of the seat 3 is adjusted. It has a front-to-rear length, so that the front-rear distance from the inflator 70 to its front end in the deployed state is greater than the front-rear distance. An outlet 71 is provided, a tether 58 is formed in front of the gas outlet 71, and the dividing line 57 is formed in a linear shape that is inclined higher toward the rear side. To the rear upward (that is,
The guiding action (to the rear portion of the head bag portion 54) is smoothed, and the air flows preferentially into the rear portion of the side airbag 50, so that the deployment performance of the rear portion with respect to the front portion when the side airbag 50 is deployed is enhanced. , Can promote deployment delay.

Further, the upper end of a pillar vertically arranged at the side of the front seat and behind the side door 2 of the front seat is located at substantially the same height as the belt line 6. The lower part of the pillar is fixed to the side sill 8 so that the lower part of the pillar is formed wider in the front-rear direction as the shape of the lower part of the side sill approaches the side sill 8 to secure rigidity. The airbag unit 40 which retreats to the front side and is installed in the side door 2
Is located closer to the front, but the effect of the configuration in which the driver has to be installed closer to the front side is more remarkable.

As a result, the occupant can be effectively received and protected by the side airbag 50 irrespective of the position of the occupant in front of and behind the side airbag 50. In addition, at the time of a side collision, since the upper and lower portions of the airbag unit 40 are displaced substantially parallel to the passenger compartment, the airbag unit 40 is inclined toward the passenger compartment and the deployment direction of the side airbag 50 is directed to the occupant. Thus, there is no danger of hitting the occupant with the deployed side airbag 50, and the deployment direction of the side airbag 50 can be reliably directed upward, and the side airbag 50 can be connected between the occupant and the side door 2. It can be reliably deployed in between.

In the deployed state, the rear end of the upper end of the side airbag 50 is formed in a curved portion 64, and the dividing line 57 is formed in a substantially straight line. Since the gas is directed to the vicinity of the lower end of the portion 64, the developing gas guided by the dividing line 57 flows to the front by the guiding action of the curved portion 64 after filling into the rear portion of the head bag portion 54, and flows forward. The front part can also be reliably deployed.

Next, when the side airbag 50 is deployed, the dividing line 57 is inclined in the front-rear direction with respect to the horizontal direction, the front part is located below the belt line 6, and the rear part is located. Since it is located above the belt line 6, that is, intersects with the belt line 6, the dividing line 57 does not become parallel to the belt line 6, but is parallel to the swing axis along which the head MH of the occupant swings at the time of a side collision. Therefore, it is difficult for the side airbag 50 to be bent at the position of the dividing line 57. That is, since the unfolded head bag portion 54 has rigidity to resist bending, even if the head bag portion 54 is not supported by the window glass 11, the vehicle body 1, or the like above the belt line 6, the side airbag is not used. Is hard to be broken at the part of the dividing line 57,
Improves the performance of receiving the head MH. As a result, the protection function of protecting the head MH of the occupant by the head bag portion 54 at the time of a side collision can be significantly improved.

Since the protection function of the head bag portion 54 is improved, the size of the side airbag 50 can be reduced, and the side airbag device 5 can be used in a pillarless type (open roof type) automobile C. Applicable. Further, since the size of the side airbag 50 can be reduced, the deployment timing can be set such that there is no delay in the deployment timing of the head bag portion 54 with respect to the deployment timing of the trunk bag portion 53. .

As shown in FIG. 9, the position and the inclination angle of the dividing line 57 in the unfolded state are inclined so that the dividing line 57 is located on the side of the occupant's neck so as to become lower toward the front. It is common to adjust the seat 3 to the front position as the height or sitting height of the occupant including the occupant of the child becomes lower. Therefore, the dividing line 57 which becomes lower toward the front makes it possible to reduce the height or the like of the occupant. The dividing line 57 can be positioned on the side of the occupant's neck, and the trunk MB
, The torso bag 53 can be reliably deployed at a position corresponding to the head MH, and the head bag 54 can be reliably deployed at a position corresponding to the head MH.

Further, as described above, this car C is of a pillarless type (open roof type), and particularly, when the window glass 11 is opened, the head that receives the occupant's head MH at the time of a side collision. Even if the bag portion 54 cannot be supported by the pillar, the side airbag 50 can be significantly reduced in size by forming the division line 57 so as to intersect the belt line 6 so as to be lower toward the front. become. In addition, even if the front portion of the upper end of the side airbag 50 is formed as an inclined portion 62 which is substantially parallel to the dividing line 57 and is inclined so as to become lower toward the front, the occupant's head MH is surely secured by the head dividing bag 54. Therefore, the size of the side airbag 50 can be reduced, and it is advantageous in terms of cost.

The side airbag device 5 is constructed as described above, and the side airbag 50 is moved in accordance with the sliding amount of the seat 3 mounted on the vehicle body 1.
The front and rear lengths that can be deployed between the occupant seated at the vehicle and the side door 2, regardless of the front and rear positions of the seat 3,
The torso MB and MBL and the heads MH and MHL of the occupant seated on the seat 3 are effectively received and protected by the torso bag 53 and the head bag 54 of the side airbag 50, respectively. Can be. Here, the side airbag 50 includes a door-side bag film material 51 and an occupant-side bag film material 5.
Since the two peripheral portions are joined to form a bag, the structure of the side airbag 50 and the structure of the dividing line 57 are simplified, and the reliability is excellent.

As shown in FIG. 12, when the impact absorbing member 24 is not provided inside the door body 10A on the outside in the vehicle width direction corresponding to the airbag housing portion 44, the impact bar The distance from the lower mounting portion 40a to the lower mounting portion 40b is
In the case where the distance is set to be smaller than the distance from the upper mounting parts 40c and 40d to the lower mounting parts 40a and 40b,
Is larger than the side impact load acting on the upper mounting portions 40c, 40d. In particular, depending on the state of the collision, even when the side impact load is concentrated on the height position of the impact bar 22, a large side impact load acts on the lower mounting portions 40a and 40b.

At the time of such a side collision, the lower portion of the airbag unit 40 swings more toward the passenger compartment than the upper portion, as indicated by the two-dot chain line. Also, damage to the gas passage portion 59 extending from the inflator 70 to the side airbag 50 can be reliably prevented, and the side airbag 50 can be reliably deployed at the time of a side collision. Furthermore, in this case, since the third allowable portion 18 that allows the upward displacement of the inflator storage portion 45 is provided, when the side bag load is applied and the airbag unit 40 is displaced toward the passenger compartment side. Gas passage part forming part 4
Since the displacement of the gas passage 6 toward the passenger compartment is permitted through the permitting portion 18, it is possible to prevent the gas passage portion forming portion 46 from being compressed or deformed into a bent shape. By the way, FIGS.
The following describes a seat-mounted type in which a side airbag device is mounted on a seat back of a seat device of a car C of a pillarless type (open roof type) as shown in FIG.

As shown in FIG. 13, a seat-mounted side airbag device incorporated in a seat back 4A of a seat 3A on the driver's seat side of an automobile C will be described. A seat back frame 75 made of a steel pipe material is provided on the outer peripheral portion of the rear portion inside the seat back 4A, and a pad material 76 made of synthetic resin foam is attached to a spring material (not shown) fixed to the seat back frame 75. The surface of the pad material 76 is covered with a skin material 77, and the seat back 4A
A swelling portion 4a swelling forward is formed on both left and right sides of the lens.

Next, the side airbag device 5A will be described. The side airbag device 5 includes a side collision detection sensor (not shown) for detecting a side collision and an airbag unit 40.
A, the airbag unit 40A includes a seatback frame 75 in a storage portion formed in the pad material 76 in a middle portion near the right side in the seatback 4A.
, And includes an inflator (not shown), a folded side airbag 50A, and a case 78 for accommodating the inflator and the side airbag 50A. Then, the pad material 76 on the front side of the accommodation portion
Is partially breakable so that the side airbag 50A can be deployed forward.

The side airbag 50A is
The upper head bag portion 5 is configured substantially in the same manner as the above embodiment so as to extend vertically, and corresponds to the head MH.
Lower body bag 53A corresponding to 4A and body MB
Is similarly formed.
That is, in a state where the side airbag 50A is deployed, the division line 57A is inclined in the front-rear direction with respect to the horizontal direction, the front part is located below the belt line 6, and the rear part is located below the belt line 6. Are also located on the upper side, that is, are formed so as to intersect with the belt line 6. Here, the division line 57A may be formed so that the front part is located above and the rear part is located below the belt line 6.

When another vehicle or the like collides with the vehicle C and a side collision is detected by the side collision detection sensor, during a moment until the occupant makes a secondary collision with the side door 2 due to the side collision, The gas for deployment generated from the inflator is supplied to the side airbag 50A, and the airbag unit 40A
Then, the side airbag 50A is deployed between the occupant and the side door 2, and the occupant is received and protected. That is, at the time of side collision, first the occupant (driver)
The split line 57A regulates the flow of gas from the trunk bag portion 53A to the head bag portion 54A so that the trunk portion MB is received by the side airbag 50A and then the head MH. The inflation of the head bag portion 54A with respect to the head bag portion 53A can be delayed.

Further, when the side airbag 50A is deployed, the dividing line 57A is inclined in the front-rear direction with respect to the horizontal direction, the front part is located below the belt line 6, and the rear part is the belt. Since it is located above the line 6, that is, intersects with the belt line 6, the dividing line 57A does not become parallel to the belt line 6, but becomes parallel to the swing axis along which the occupant's head MH swings at the time of a side collision. Therefore, the side airbag 50A is unlikely to be bent at the position of the dividing line 57A, and the protection function for protecting the occupant's head MH with the head bag portion 54A at the time of a side collision is markedly similar to the previous embodiment. Can be enhanced.

In addition, since the relative position of the occupant and the side airbag 50A in the front-back direction does not change even if the front-back position is changed by sliding the seat 3A back and forth, the side airbag 50A can be downsized. Can be achieved, which is advantageous in terms of cost.

Next, a modification of the above embodiment will be described. 1] The dividing lines 57 and 57A may be formed in a curved shape. 2] The shock absorbing members 24 and 25 provided inside the door main body 10 may be configured as large-sized ones extending in the vertical direction. 3] The dividing lines 57, 57A may be formed so as to partition the head bag portion 54A and the trunk bag portion 53A by opening the ventilation path 56 on the rear end side.

4) The strength of the portion corresponding to the lower mounting portions 40a, 40b of the reinforcing member 28 surrounding the first opening 26 is set to be lower than the strength of the portion corresponding to the upper mounting portions 40c, 40d. At the same time, the strength of the portion corresponding to the lower mounting portions 40a, 40b is set to be lower than the strength of the portion corresponding to the upper mounting portions 40c, 40d of the inner panel 20, that is, the mounting strength of the upper mounting portions 40c, 40d. Due to the difference in the mounting strength between the upper and lower mounting portions 40a, 40b, the displacement of the lower part of the airbag unit 40 toward the passenger compartment swings more than the displacement toward the upper passenger compartment. It may be. In this case as well, damage to the inflator 70 at the time of a side collision and damage to the gas passage portion 59 extending from the inflator 70 to the side airbag 50 can be reliably prevented, and the side airbag 50 can be reliably deployed at the time of a side collision. it can.

5) Various modifications may be made to the above-described embodiment based on existing technology or technology obvious to those skilled in the art. 6] Of course, the present invention can be applied to various side airbag devices incorporated in side doors of various vehicles other than pillarless type (open roof type) and seatbacks of seat devices.

[0078]

According to the first aspect of the present invention, in the unfolded state, the division line is inclined with respect to the horizontal direction and formed in the front-rear direction, so that the division line is parallel to the upper end belt line of the door body. In addition, since the occupant's head does not become parallel to the swing axis at the time of the side collision, the side airbag is hard to be bent at the position of the division line. The expanded upper bag has rigidity to resist bending, so even if the upper bag is not supported by window glass or the car body above the belt line, the side airbag is less likely to break at the split line, The ability of the part to receive the head is improved. As a result, the protection function of protecting the occupant's head with the upper bag portion at the time of a side collision can be significantly improved.

Since the protection function of the upper bag portion is improved,
In addition to being able to reduce the size of the side airbag,
This side airbag device can be applied to an open roof type vehicle and a pillarless type vehicle. Since the size of the side airbag can be reduced, the deployment timing can be set so that the deployment timing of the upper bag portion does not delay from the deployment timing of the lower bag portion.

According to the second aspect of the present invention, at least a part of the divided line is formed so as to be located below the belt line in the developed state, so that at least a part of the divided line is formed in the developed state. Is located at a position corresponding to the inside of the door body, so that it is harder to fall outward when receiving the occupant's head, and the protection function for protecting the head is further enhanced. The other effects are the same as those of the first aspect.

According to the third aspect of the present invention, since the dividing line is inclined so as to become lower toward the front in the deployed state, even when the side airbag device is mounted on the side door, the side airbag device can be used. Also in the case of equipping the seat back, the dividing line can be located on the side of the occupant's neck regardless of the height or the like of the occupant. Then, regardless of the height of the occupant, the lower bag portion can be deployed at a position corresponding to the trunk, and the upper bag portion can be deployed at a position corresponding to the head. The other effects are the same as those of the first aspect.

According to the fourth aspect of the present invention, since the dividing line is formed so as to intersect with the belt line in a deployed state in a side view of the vehicle body, at least a part of the dividing line is a door in the deployed state. The position corresponds to the inside of the main body, so it is more difficult to fall outside when receiving the occupant's head, the side airbag is hard to bend along the line parallel to the belt line, and the upper bag part protects the head Protection function can be enhanced. Other effects are the same as those of the second aspect.

According to the invention of claim 5, the side door is
The rigidity, strength, and internal space make it easy to equip the side door with the side airbag device, and secure the side airbag between the side door and the occupant even when the distance between the side door and the occupant is narrow. Can be developed. In addition, even if a small occupant such as a child slides the seat forward, the front and rear lengths of the side airbags are sufficient, and the occupant is inclined so that the dividing line becomes lower toward the front. Regardless of the size, the lower bag portion can be deployed at a position corresponding to the body of the occupant, and the upper bag portion can be deployed at a position corresponding to the head. The other effects are the same as those of the third aspect.

According to the invention of claim 6, the dividing line is:
In the unfolded state, the front part is located below the belt line, and the rear part is located above the belt line. It will be in the position corresponding to the inside of the door body,
The rear part of the dividing line is located at the position corresponding to the inside of the window glass, so when catching the occupant's head, the upper bag part is more difficult to fall outside, and the side airbag is bent at the line parallel to the belt line The protection function for protecting the head by the upper bag portion can be enhanced. The other effects are the same as those of the fourth aspect.

According to the seventh aspect of the present invention, the position and the inclination angle of the dividing line in the unfolded state correspond to the front and rear positions of the seat, and the dividing line is positioned on the side of the neck of the occupant sitting on the seat. For the occupants of various heights, the split line in the deployed state can be positioned on the side of the neck, so that the lower bag portion can be reliably deployed at the position corresponding to the trunk. The upper bag portion can be reliably deployed at a position corresponding to the head.
The other effects are the same as those of the fifth aspect.

According to the eighth aspect of the present invention, at least the front end of the upper end of the side airbag in the deployed state becomes lower toward the front substantially in parallel with the division line, so that the lower the occupant's height and the like, the more the seat is moved forward. Even if the front end portion of the upper end of the side airbag is inclined so as to become lower toward the front substantially in parallel with the division line, the occupant's head is held at the upper bag portion of the side airbag. The part can be reliably received, and the side airbag can be reduced in size, which is advantageous in cost. The other effects are the same as those of the first aspect.

According to the ninth aspect of the present invention, in the vehicle, the upper end position of a pillar vertically arranged at the side of the front seat and behind the front door is substantially the same as the belt line. It is a pillarless type vehicle configured at a height, and in this pillarless type vehicle, the upper bag portion that has received the head of the occupant during a side collision cannot be supported by the pillar, but has the configuration of claim 1, The same effect as the first aspect is achieved.

According to the tenth aspect of the present invention, the side airbag is configured so that the thickness of the divided line portion in the vehicle width direction in the deployed state is smaller than the thickness of the other portions in the vehicle width direction. In the state, the rigidity of the part of the division line is low, and when the division line is parallel to the belt line, there is a possibility that the upper bag part may fall outside at the time of a side collision. As in the first aspect, the protection function of the upper bag portion for protecting the occupant's head during a side collision can be increased to a required level, the structure of the dividing line is simple, and the production cost is advantageous. is there.

According to the eleventh aspect of the present invention, the side airbag is formed in a bag shape by joining the peripheral portions of the door-side bag film material and the occupant-side bag film material. Since both bag membrane materials were joined, the structure of the side airbag and the structure of the dividing line were simplified,
Excellent reliability. The other effects are the same as those of the first aspect.

[Brief description of the drawings]

FIG. 1 is a side view of an automobile according to an embodiment of the present invention.

FIG. 2 is a side view of a side door and a seat as viewed from the inside of an automobile.

FIG. 3 is a partial front view of a main part of a side door and a seat of an automobile.

FIG. 4 is a perspective view of a side door.

FIG. 5 is a vertical sectional view taken along line VV of FIG. 4;

FIG. 6 is a side view of a waist portion of the inner panel.

FIG. 7 is a configuration diagram of an electric drive system of the side airbag device.

FIG. 8 is a longitudinal sectional view of the airbag unit.

FIG. 9 is a side view of the deployed side airbag.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

FIG. 11 is a sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is a diagram corresponding to FIG. 5 according to a modified embodiment.

FIG. 13 is a perspective view of a seat device in which an airbag unit is incorporated in a seat back.

FIG. 14 is a diagram corresponding to FIG. 2 according to a modified embodiment.

[Explanation of symbols]

 C Car 2 Side door 3 Seat 4 Seat back 5 Side airbag device 6 Belt line 7 Center pillar 8 Side sill 10 Door body 13 Armrest 16 First displacement allowance part 17 Second displacement allowance part 20 Inner panel 22 Impact bar 24, 25 Impact Absorbing member 26 First opening 27 Second opening 28 Reinforcing member 30 Side collision detection sensor 40 Airbag unit 40a, 40b Lower mounting part 40c, 40d Upper mounting part 44 Airbag storage part 45 Inflator storage part 46 Gas passage part formation Part 50 Side airbag 51 Door side bag film material 52 Occupant side bag film material 53 Body bag part 54 Head bag part 55, 56 Air passage 57 Divided line 58 Tether (restriction part) 59 Gas passage part 61 Rear inclination Part 62 inclined part 64 curved part 70 in Regulator 71 gas blow-out port

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hideaki Tanaka 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda F-term (reference) 3D054 AA02 AA03 AA06 AA07 AA17 AA21 BB21 BB30 CC04 CC08 CC09 CC11 CC42 DD28 EE20 FF13 FF16

Claims (11)

[Claims] 1. A side airbag device comprising a side airbag which is deployed between an occupant and a side door when a side collision detection means of the vehicle detects a side collision, wherein the side airbag is provided with a side door. A lower back portion deployed to the inside position of the door body and an upper bag portion deployed to the inside position of the window glass above the upper end belt line of the door body are integrally formed. It is characterized in that a dividing line is formed between the bag portions to separate the upper and lower sides with an air passage of a predetermined size, and the dividing line is formed to be inclined with respect to a horizontal direction in a developed state so as to face a vehicle front-rear direction. Side airbag device for vehicles. 2. The side airbag device for a vehicle according to claim 1, wherein the division line is formed so that at least a part thereof is located below the belt line in an expanded state. 3. The side airbag device for a vehicle according to claim 1, wherein the dividing line is inclined so as to become lower toward the front in a deployed state. 4. The divided line, in a developed state,
3. The side airbag device for a vehicle according to claim 2, wherein the belt line is formed so as to intersect with the belt line in a vehicle side view. 5. The side airbag is mounted on the side door, and the side airbag is positioned between an occupant seated on the seat and the side door regardless of the front-back position of a slidable seat. The side airbag device for a vehicle according to claim 3, wherein the side airbag device has a front-rear length that can be deployed. 6. The split line is formed such that a front portion is located below the belt line and a rear portion is located above the belt line in an unfolded state. A vehicle side airbag device according to claim 4. 7. The position and the inclination angle of the dividing line in the unfolded state are set so as to correspond to the front and rear positions of the seat so that the dividing line is located on the side of the neck of the occupant sitting on the seat. The vehicle side airbag device according to claim 5, wherein: 8. The side of a vehicle according to claim 1, wherein at least a front end portion of an upper end of the side airbag in an unfolded state is inclined so as to become lower toward the front substantially in parallel with the dividing line. Airbag device. 9. The vehicle according to claim 1, wherein an upper end position of a pillar vertically arranged at a side of a front seat and behind a front side door is formed at substantially the same height as the belt line. 2. The vehicle according to claim 1, wherein the vehicle is a pillarless type vehicle.
A side airbag device for a vehicle according to Claim 1. 10. The side airbag according to claim 1, wherein a thickness of the divided line portion in the vehicle width direction in a deployed state is smaller than a thickness of the other portion in the vehicle width direction. 2. The side airbag device for a vehicle according to claim 1. 11. The side airbag is formed in a bag shape by joining peripheral portions of a door-side bag film material and an occupant-side bag film material. The side airbag device for a vehicle according to claim 1, wherein the membrane material is joined.