JP3595997B2 - Side airbag device for pillarless vehicles - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a side airbag device for a vehicle, and in particular, to provide a dividing line that separates a lower bag portion and an upper bag portion by opening a ventilation path, and appropriately adjusts the vertical position and the inclination angle of the dividing line with respect to the horizontal when in an expanded state. Related to what was set in.
[0002]
[Prior art]
Conventionally, in a side airbag device of a vehicle, when a side collision is detected by a side collision detection sensor, a deployment gas generated from an inflator is generated immediately before the occupant does not collide with a side door immediately after the side collision. Supplied to the side airbag, the side airbag is deployed between the occupant and the side door, and the deployed side airbag receives and protects the occupant.
[0003]
Here, at the time of a side collision which is collided from the side, the occupant's torso first moves to the collision side, and the occupant's head moves to the collision side with a slight delay. 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 that has passed 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.
[0004]
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 has also been put to practical use. 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 integrated side airbag is separated by a dividing line except for the ventilation path, so that the trunk bag part (lower bag part) and the head bag part (upper bag part) A side airbag configured to connect an inflator to the torso bag portion, deploy the torso bag portion immediately after a side collision, and then deploy the head portion with a short delay. The device is 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.
[0006]
In the seat-mounted side airbag device, even if the seat is slid back and forth to change its front-back position, the relative position between the occupant and the side airbag in the front-back direction does not change, so the side airbag is made much larger. Although it is not necessary, 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, with 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 also has strength and rigidity. Since it is high and has an internal space, it is advantageous in terms of assembly and manufacturing costs.
[0007]
The door-mounted side airbag device disclosed in Japanese Patent Application Laid-Open No. 9-39710 discloses a torso bag section (lower bag section) for protecting the occupant's torso and a occupant's head for protecting the occupant's head. A head bag portion (upper bag portion) and a dividing line (coupling portion) that separates a boundary portion between the two bag portions with an air passage are provided. 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 in a deployed state, the dividing line extends in the horizontal direction to form a belt line at the upper end of the side door body. And two air passages are formed in the middle of the dividing line. Incidentally, Japanese Patent Application Laid-Open No. 6-227348 also discloses a side airbag device having substantially the same configuration.
[0008]
[Problems to be solved by the invention]
In the side airbag devices described in the above two publications, the portion of the split line of the deployed side airbag has low rigidity and is easily bent. In addition, 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 dividing line is positioned parallel to the swing axis where the occupant's head swings sideways during a side collision, and the head bag deployed at the time of a side collision is sufficiently made of window glass or a vehicle body. 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.
[0009]
In particular, when the vehicle is an open roof type vehicle or when the window glass of the side door is broken, the head bag portion cannot be sufficiently supported by the window glass, the vehicle body, or the like. 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 portion. 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.
[0010]
The side airbag device disclosed in JP-A-6-227348 is equipped with a large-sized side airbag, and in a deployed state, a division line of the side airbag is positioned near an upper side of a belt line, and the side airbag of the deployed side airbag is opened. Although the upper end and the rear end are configured to be supported by the window frame, a large-sized side airbag is required. In addition, since the dividing line of the side airbag extends in the horizontal direction, for example, in the case of a small occupant 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.
[0011]
An object of the present invention is 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, such as the height of the occupant. The lower bag portion and the upper bag portion can effectively receive the torso and head of the occupant regardless of the size, respectively, and the side airbag can be downsized.
[0012]
[Means for Solving the Problems]
Claim 1Pillarless typeA side airbag device of a vehicle is deployed between an occupant and a side door when a side collision detection unit of the vehicle detects a side collision.Inside the side doorIn a side airbag device provided with a side airbag, the side airbag is deployed at a position inside a door body of a side door.Lower bag partAnd an upper bag portion which is deployed at an inner position of the window glass above the upper end belt line of the door body, and an air passage having a predetermined size is provided between the two bag portions in the side airbag. While forming a dividing line that separates up and down,With respect to the vehicle body floor, so that the height of the upper end of the lower bag portion becomes lower toward the front,In the unfolded state of the split lineLower forwardIt is characterized by the following.
[0013]
The side airbag device is, Side airbagIt is desirable to incline so that the dividing line in the deployed state becomes lower toward the front, and it is desirable that the dividing line intersect the belt line of the side door. 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 in 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.
[0014]
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 attached to the door body of the side door before the occupant secondary collision with the side door due to the side collision. The upper bag portion is deployed to the inside position, and the upper bag portion is deployed to the inside 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 the dividing line that separates the upper and lower parts with a ventilation path between the two bag parts. I do.
[0015]
Since the dividing line in the unfolded state is formed to be lower toward the front so that the height of the upper end of the lower bag portion is lower toward the front with respect to the vehicle body floor, the height or sitting height of the occupant including the occupant of the child is also reduced. It is normal to adjust the seat to the front position as the seat is lower, so by setting the split line lower toward the front, the split line is located on the side of the occupant's neck regardless of the height or the like of the occupant. The bag portion for the trunk can be reliably deployed at the position corresponding to the trunk.
Also,Since the dividing line is not parallel to the upper end belt line of the door body and is not parallel to the swing axis where the occupant's head swings at the time of a side collision, it is difficult for the side airbag to be bent at the position of the dividing line Become. 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 less likely 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.
[0016]
Since the protection function of the upper bag portion is improved, the size of the side airbag can be reduced, and the 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.
[0017]
[0018]
[0019]
Claim2ofPillarless typeVehicle side airbag device1The invention is characterized in that the dividing line is formed so as to intersect the belt line in a deployed state in a vehicle body side view. 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 deployed state. It becomes more difficult to fall down, the side airbag is hard 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.
[0020]
Claim3ofPillarless typeVehicle side airbag device1In the invention, the side airbag is mounted on the side door, and the side airbag is deployed between an occupant seated on the seat and the side door irrespective of the front-back position of the slidable seat. It has a possible front and rear length. The side door has excellent rigidity and strength and has an internal space, so the side door can be easily equipped with a side airbag device.If the side door and the occupant are narrow, the side airbag can be connected to the side door and the occupant. It can be reliably deployed between. Moreover, even when 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.
[0021]
Claim4ofPillarless typeVehicle side airbag device2In the invention, 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 a developed state. . ClaimOne, twoAlmost in the same manner as above, the front part of the dividing line is located at the position corresponding to the inside of the door body, and the rear part of the dividing line is located at the position corresponding to the inside of the window glass when receiving the occupant's head. In this case, the upper bag portion is less likely to fall outward, 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.
[0022]
Claim5ofPillarless typeVehicle side airbag device3In the invention, the position and the inclination angle of the dividing line in the unfolded state are set so that the dividing line is located on the side of the neck of the occupant seated on the seat, corresponding to the front-back position of the seat. It is a feature. In other words, for the occupants of various heights, etc., it is possible to position the dividing line in the deployed state on the side of the neck, and to reliably deploy the lower bag portion at the position corresponding to the trunk, and to correspond to the head. The upper bag portion can be reliably deployed at a position where the upper bag portion is located.
[0023]
Claim6ofPillarless typeThe side airbag device for a vehicle according to the first aspect of the present invention is characterized in that, in the deployed state, at least a front end portion of an upper end of the side airbag is inclined so as to become lower toward the front substantially in parallel with the division line. Is what you do.
In other words, assuming that the seat is adjusted to the front position as the occupant's height or the like decreases, at least the front end portion of the upper end of the side airbag may be inclined so as to become lower toward the front substantially in parallel with the division line. The head portion 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.
[0024]
Claim7ofPillarless typeIn the vehicle side airbag device according to the first aspect of the present invention, in the vehicle according to the first aspect, the upper end position of a pillar vertically arranged at a side of a front seat and at a rear position of a front seat side door may be the belt. At almost the same height as the lineThat it was composedIt is a feature. In this pillarless type vehicle (for example, an open roof type vehicle), the upper bag portion that has received the occupant's head during a side collision cannot be supported by the pillar, so the configuration and operation of claim 1 are very important. Become.
[0025]
Claim8ofPillarless typeIn the vehicle side airbag device according to the first aspect of the present invention, the side airbag is configured such that a thickness of the part of the dividing line in the vehicle width direction in the deployed state is smaller than a thickness of the other part in the vehicle width direction. It is characterized by having been constituted. 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, there is a possibility that the upper bag portion may fall outside during a side collision, With the structure of claim 1, the protection function of the upper bag portion can be increased to a necessary level, and the structure of the dividing line is simple and advantageous in manufacturing cost.
[0026]
Claim9ofPillarless typeIn the vehicle side airbag device according to the first aspect of the present invention, 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, and a dividing line is formed. Is characterized in that the two bag membrane materials are joined to each other except for the ventilation path. The structure of the side airbag and the structure of the dividing line are simplified, and the reliability is excellent.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described 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 (open roof) automobile.
As shown in FIGS. 1 to 4, a pillarless type automobile C is equipped inside a vehicle body 1, a pair of left and right side doors 2, and the vehicle body 1.Body floor 1aA pair of left and right seats 3 (see FIGS. 2 and 3) is slidable forward and backward by sliding an upper rail 3b fixed to a lower portion of the seat with respect to a lower rail 3a fixed to the lower door 3a. An airbag unit 40 of the airbag device 5 is provided.
[0028]
The side door 2 includes a door body 10, an electric window glass 11, a door lock mechanism (not shown), and the like. An airbag unit 40 is mounted on a rear portion inside the door body 10. 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 of the door trim 12 in the vertical direction. 2 and 3, the driver's seat side is shown, and reference numeral 9 in FIG. 2 indicates a steering wheel.
[0029]
As shown in FIGS. 4 and 5, a rectangular opening 15 is formed in the door trim 12 above the armrest 13, and the casing 41 of the airbag unit 40 is fitted into the opening 15 from the inside of the door body 10. The cover member 43 of the casing 41 faces the vehicle compartment side substantially flush with the door trim 12 so as to form a part of the door trim 12, and at the time of a side collision, the side airbag 50 breaks the cover member 43. It will be deployed to the passenger compartment.
[0030]
As shown in FIGS. 5 and 6, the door body 10 includes an inner panel 20, an outer panel 21, various reinforcing members for reinforcing the panels 20 and 21, and a window glass 11 inside the door body 10. A metal pipe-shaped impact bar 22, 23 included in the reinforcing member and extending in the front-rear direction, and shock absorbing members 24, 25 made of a foamed resin material, etc., are provided with a storage space.
[0031]
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 houses the side airbag 50 and the inflator 70 The airbag unit 40 is mounted inside the rear portion of the side door 2.
[0032]
As shown in FIG. 7, the side collision detection sensor 30 operates a sensor unit 31, a microcomputer (M / C) 32 connected to the sensor unit 31, and operates the inflator 70 at the time of a side collision connected to the microcomputer 32. An integrated side collision detection sensor including a driving unit 33 that outputs a driving current for the purpose of performing the driving is provided, and is incorporated in a lower portion of the center pillar 7 of the side door 2 as shown in FIG. As shown in FIGS. 1 and 2, the lower portion of the center pillar 7 is formed so as to be wider in the front-rear direction as approaching the side sill 8, and is fixed to the side sill 8.
[0033]
As shown in FIG. 5 to FIG. 6 and FIG. 8 to FIG. 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 relatively wide left and right width in the vehicle width direction. It has a narrow casing 41, and the casing 41 is composed of a metal case member 42 opened to the vehicle compartment side, a synthetic resin cover member 43 for covering the case member 42 from the vehicle compartment side, and the like. An airbag housing portion 44 is formed in a substantially upper half portion inside the casing 41, that is, an upper portion of the airbag unit 40, and an inflator housing portion 45 is formed in a portion near the lower end inside the casing 41, that is, a lower portion of the airbag unit 40. Are formed so as to protrude more toward the passenger compartment than the airbag storage portion 44.
[0034]
That is, the airbag storage portion 44 is formed so as to protrude more toward the inner panel 20 than the inflator storage portion 45. The side airbag 50 is stored in the airbag storage portion 44 in a state of being folded in a roll shape, and an inflator storage portion 45 provided below the airbag storage portion 44 has an inflator facing in the front-rear direction. 70 are stored. Further, a gas passage portion forming portion which forms a gas passage portion 59 between the two storage portions 44 and 45 by a concave portion 47 formed of a casing 41, a cover member 43, or the like, and in which a part of the cover member 43 is recessed inward. 46 are provided.
[0035]
Regarding the mounting structure of the airbag unit 40 to the side door 2, the airbag unit 40 is mounted on 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 upon a side collision. I have.
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 storage 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.
[0036]
The airbag unit 40 is disposed inside the impact bar 22 in the vehicle width direction, and the airbag unit 44 faces the first opening 26 from the inside in the vehicle width direction to form the gas passage portion with the impact bar 22. A pair of left and right lower mounting portions 40a and 40b, which are lower mounting means provided at substantially the same height as the portion 46 (gas passage portion 59), and an upper portion provided above the lower mounting portions 40a and 40b. It is attached to the reinforcing member 28 from the inside in the vehicle width direction via a pair of left and right upper attachment portions 40c and 40d as attachment means. As described above, all the attachment portions 40a to 40d are connected and fixed to the reinforcing member 28.
[0037]
At the upper end of the cover member 43 constituting the airbag storage portion 44, a long V-shaped groove is cut in the front-rear direction from inside the airbag storage portion 44 to form a broken portion 48. The side airbag 50 breaks and is deployed in the vehicle interior. Here, the seat 3 is configured to be slidable such that the seat back 4 moves rearward of the airbag unit 40 from a forward movement position indicated by a two-dot chain line as indicated by a solid line in FIG. .
[0038]
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 in a state where the airbag unit 40 is mounted on the side door 2, and the lower mounting portion is provided. The upper end of the shock absorbing member 24 is provided between the impact bars 22 and 40a, 40b, and the shock absorbing member 25 is provided on the outer side in the vehicle width direction corresponding to the airbag storage portion 44.
[0039]
As shown in FIG. 8, the upper end of the armrest 13 is sandwiched by the concave portion 47 of the airbag unit 40, and a gas passage portion between the gas passage portion forming portion 46 of the airbag unit 40 and the armrest 13 at the time of a side collision. A first displacement permitting portion 16 that allows displacement of the forming portion 46 toward the cabin is provided. Further, between the inflator storage portion 45 and the armrest 13 which is a part of the door trim 12 of the side door 2, a second displacement allowing portion 17 which allows the inflator storage portion 45 to be displaced toward the passenger compartment at the time of a side collision is provided. Is provided.
[0040]
Here, in a normal side collision, since the side collision load is transmitted to the inside of the door body 10 via the outer panel 21, the impact bar 22, the inner panel 20, and the like, the position of the side collision load input to the airbag unit 40 is mainly the impact. Although this is a position corresponding to the bar 22, a collision load also acts on the upper part of the impact bar 22 at the same time. 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.
[0041]
Thereby, at the time of a collision, the lower part of the airbag unit 40 via the shock absorbing member 24 due to the difference in the distance between the impact bar 22, which is the side collision load input position, and the mounting portions 40a (40b), 40c (40d). When moving to the cabin side, the upper mounting portions 40c and 40d also move to the cabin side by the impact absorbing member 25 via the reinforcing member 28, and the airbag unit 40 is shown by a two-dot chain line in FIG. As shown by, it moves substantially parallel to the cabin side.
[0042]
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. I have. Further, the side airbags 50 are a torso bag portion 53 which is a lower bag portion deployed at a position corresponding to the occupant's torso MB and an upper bag portion which is deployed at a position corresponding to the occupant's head MH. A head bag portion 54, a dividing line 57 that vertically separates the two bag portions 53, 54 by opening and closing two air passages 55, 56, and an inflator 70 of the lower end portion of the side airbag 50. Has a tether 58 (regulator) provided on the front side of the gas outlet 71. Here, the body bag portion 53 and the head bag portion 54 are integrally formed of the two bag film materials 51 and 52.
[0043]
The inflator 70 accommodates the gas generating agent in, for example, a cylindrical case that is long in the front and rear directions, and at the time of a side collision, the gas generating agent reacts and expands by a driving current output from the driving unit 33 of the side collision detection sensor 30. At the rear side of the inflator 70, there are provided a large number of gas outlets 71 for blowing the gas for deployment into the side airbag 50. 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.
[0044]
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, the front end stands substantially vertically upward from the front end of the airbag unit 40. The rear end is formed in a front vertical portion 60 that rises, and the rear end is formed in a rear inclined portion 61 that extends linearly upward and obliquely rearward from the rear end of the airbag unit 40. The lower end is formed on a sloped portion 62 that is linearly inclined so as to be lower, and the upper end portion is formed on a horizontal linear portion 63 continuous with the inclined portion 62, and the rear end portion of the upper end portion is formed as a rear inclined portion. It is formed in a curved portion 64 that is continuous with the horizontal portion 63.
[0045]
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 changes due to the position adjustment of the front / rear position of the seat 3. 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-rear length that can be deployed between the occupant seated on the seat 3 and the side door 2.
[0046]
The dividing line 57 is formed in a 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. In 50, the thickness in the vehicle width direction of the division line 57 is smaller than the other thicknesses in the vehicle width direction. Then, in the deployed state of the side airbag 50, it becomes lower toward the front with respect to the horizontal direction, that is, linearly inclined higher toward the rear side, and intersects with the belt line 6 of the side door 2, and , And is formed so as to be directed to the vicinity of the lower end of the curved portion 64 provided near the upper end of the rear end.
[0047]
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.
[0048]
That is, the front and rear positions of the seat 3 are adjusted in accordance with the height of the occupant. In this case, if the height of the seat 3 is reduced, the position of the occupant's neck is adjusted forward. The position and the inclination angle of the dividing line 57 in the developed state are set so as to be inclined so as to be lower and 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 on a straight line connecting the gas outlet 71 of the inflator 70 and the front air passage 55. Are formed by suturing and connecting the gas to a predetermined length of horizontal straight line, and by restricting the gas from flowing into the front part of the side airbag 50, the gas flows into the rear part of the side airbag 50 preferentially. I will do it.
[0049]
Here, as is apparent from FIG. 9, 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 is configured so that the front-rear distance from the inflator 70 to the front end in the deployed state is greater than the front-rear distance from the front end to the rear end. A gas outlet 71 is provided, a tether 58 is formed at the front side of the gas outlet 71, and the dividing line 57 is formed in a linear shape that is inclined higher toward the rear side, so that the gas from the inflator 70 is The air flows preferentially into the rear portion of the side airbag 50, and the expansion of the rear portion is promoted when the side airbag 50 is expanded.
[0050]
Next, the operation and effect 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 may 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, so that the side airbag 50 is Between the vehicle and the vehicle, the vehicle is deployed upward and diagonally rearward, so that the occupant is received and protected.
[0051]
First, at the time of the side collision of the vehicle C, the side collision load is transmitted through the outer panel 21, the impact bar 22, the inner panel 20, and the like, as described above, so that the side collision load input position with respect to the airbag unit 40 is set. Is mainly the impact bar 22, but at the same time, a certain collision load acts on the upper part of the impact bar 22 as well. 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.
[0052]
At this time, the rigidity of the mounting structure for mounting the airbag unit 40 to the inner panel 20 is enhanced by the reinforcing member 28 that surrounds the first opening 26 and the strength of the inner panel 20 around the first opening 26. Since the rigidity is also enhanced, damage such as local deformation of the airbag unit 40 can be reliably prevented. By the way, since the airbag storage portion 44 protrudes toward the inner panel 20 side from the inflator storage portion 45 and the first opening 26 opposed to the protruding portion is formed in the inner panel 20, the airbag storage portion 44 is formed from the inner panel 20. The side impact load acting on the portion 44 can be buffered to prevent the side airbag 50 from being damaged.
[0053]
Further, the airbag unit 40 is connected to the inner panel 20 via the lower attachment portions 40a and 40b at the gas passage portion forming portion 46 forming the gas passage portion 59 for supplying gas from the inflator 70 to the side airbag 50. Since it is fixed, 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 vehicle interior, the gas passage portion is displaced. Since the displacement of the portion forming portion 46 toward the passenger compartment is permitted through the first displacement allowing portion 16, the gas passage portion forming portion 46 can be prevented from being compressed or deformed into a bent shape.
[0054]
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 interior space of the armrest 13 of the side door 2. It is possible to prevent a side collision load from acting on the inflator storage section 45 at the time of a side collision, thereby preventing damage to the inflator storage section 45. Further, since the second displacement allowing portion 17 is provided between the inflator housing portion 45 and the armrest 13, when the side impact load acts and the airbag unit 40 is displaced toward the vehicle compartment side, the inflator housing portion 45 is closed. The displacement to the cabin side is the second displacement allowable portion.17, The compression load is less likely to act on the inflator storage portion 45, and the inflator storage portion 45 is less likely to be damaged.
[0055]
Further, since the second opening 27 facing the lower portion of the inflator storage portion 45 is formed in the inner panel 20, the side impact load acting on the inflator storage portion 45 from the inner panel 20 is buffered to prevent damage to the inflator 70. Can be prevented. Thus, at the time 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 (40b), 40c Due to the difference in the distance to (40d), when the lower part of the airbag unit 40 moves to the cabin side via the shock absorbing member 24, the upper mounting portions 40c and 40d also move to the cabin side via the shock absorbing member 25. 8, the airbag unit 40 moves substantially parallel to the vehicle compartment side as shown by the two-dot chain line in FIG.
[0056]
As a result, 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.
When the side airbag 50 is deployed, the tether 58 regulates 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 gas blown from the gas outlet 71 can be preferentially and quickly flown into the rear portion of the side airbag 50 by the dividing line 57 and the rear inclined portion 61. Since the flow velocity to the upper rear side can be increased, the deployment delay of the rear part of the side airbag 50 with respect to the front part can be reliably suppressed.
[0057]
That is, at the time of a side collision, the front and rear portions between the body bag portion 53 and the head bag portion 54 are arranged so that the occupant's body portion MB is first received by the side airbag 50 and then the head MH is received. HornVentilation paths 55, 56The upper and lower division 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 the inside position of the door body 10 of the side door 2, and the head bag portion 54 is deployed at the inside position of the window glass 11 above the belt line 6 of the door body 10. Is done.
[0058]
On the other hand, as described above, the side airbag 50 has a front-rear length so that it can be deployed between the occupant seated on the seat 3 and the side door 2 regardless of which front-rear sliding position of the seat 3 is adjusted. For this purpose, in the deployed state, the longitudinal distance from the inflator 70 to the front end thereof is larger than the longitudinal distance from the front end thereof to the rear end thereof. Is provided, and a tether 58 is formed on the front side of the gas outlet 71. Further, since the dividing line 57 is formed in a linear shape that is inclined higher toward the rear side, the gas for deployment from the inflator 70 is provided on the rear side. The guiding operation of guiding the air bag upward (that is, to the rear portion of the head bag portion 54) becomes smooth, and the air flows into the rear portion of the side airbag 50 preferentially. Growing the rear of the deployment performance for the front during deployment, it is possible to facilitate the deployment delay.
[0059]
Further, the vehicle C has a pillar-less structure in which the upper end of a pillar vertically arranged at the side of the front seat and behind the front seat side door 2 is substantially the same height as the belt line 6. The lower portion of the pillar is fixed to the side sill 8 so that the lower portion of the pillar is formed in the front-rear direction as the shape approaches the side sill 8 so as to secure rigidity. As a result, the position of the airbag unit 40 provided in the side door 2 is located closer to the front, but the effect of the configuration in which the occupant must be installed closer to the front is more remarkable. .
[0060]
As a result, the occupant can be effectively received and protected by the side airbag 50 irrespective of the position of the occupant in the front-rear direction with respect to the side airbag 50. In addition, in the event of a side collision, the upper and lower portions of the airbag unit 40 are displaced substantially parallel to the passenger compartment, so that the airbag unit 40 is inclined toward the passenger compartment and the deployment direction of the side airbag 50 is directed toward the occupant. Thus, there is no danger that the occupant will be hit by 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.
[0061]
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, the developing gas guided by the dividing line 57 flows forward by the guiding action of the curved portion 64 after filling the rear portion of the head bag portion 54, and the front portion of the head bag portion 54 Can also be reliably developed.
[0062]
Next, in a state where the side airbag 50 is deployed, the division 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 the belt line 6. Since it is located above, that is, intersects with the belt line 6, the dividing line 57 does not become parallel to the belt line 6, and does not become parallel to the swing axis on which the occupant's head MH swings in a side collision. Therefore, the side airbag 50 is less likely to be bent at the position of the dividing line 57. That is, since the deployed head bag portion 54 has rigidity to resist bending, even if the head bag portion 54 is not supported by the window glass 11 or the vehicle body 1 above the belt line 6, the side air bag Is less likely to break at the part of the dividing line 57, and the performance of the head bag portion 54 receiving the head MH is improved. As a result, the protection function of protecting the occupant's head MH with the head bag portion 54 at the time of a side collision can be significantly improved.
[0063]
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 applied to a pillarless type (open roof type) automobile C. is there. Further, since the size of the side airbag 50 can be reduced, the deployment timing can be set so that the deployment timing of the head bag portion 54 is not delayed with respect to the deployment timing of the trunk bag portion 53. .
[0064]
As shown in FIG. 9, the position and the inclination angle of the dividing line 57 in the unfolded state are inclined so as to be lower toward the front so that the dividing line 57 is located on the side of the occupant's neck. It is common to adjust the seat 3 to the front position as the height or the sitting height of the occupant becomes lower including the height of the occupant. The dividing line 57 can be positioned on the side of the neck of the torso, the torso bag portion 53 is reliably deployed at a position corresponding to the torso MB, and the head bag portion 54 is positioned at a position corresponding to the head MH. Can be reliably developed.
[0065]
Further, as described above, the vehicle C is a pillarless type (open roof type), and particularly when the window glass 11 is opened or the like, a head bag portion that receives the occupant's head MH during a side collision. Even when the pillar 54 cannot be supported by the pillars, the division line 57 is formed so as to intersect the belt line 6 so as to be lower toward the front, so that the side airbag 50 can be significantly reduced in size. Further, even if the front portion of the upper end of the side airbag 50 is formed in the inclined portion 62 which is substantially parallel to the dividing line 57 and is inclined so as to become lower toward the front,Head bag 54As a result, since the head MH of the occupant can be reliably received, the size of the side airbag 50 can be reduced, and the cost is advantageous.
[0066]
The side airbag device 5 is configured as described above, and further according to the sliding amount of the seat 3 mounted on the vehicle body 1, the side airbag 50 is moved between the occupant seated on the seat 3 and the side door 2. By configuring the front and rear lengths that can be deployed between the seats 3, the torso MB and MBL and the heads MH and MHL of the occupant seated on the seat 3 are respectively connected to the side airbag 50 regardless of the front and rear positions of the seat 3. The torso bag 53 and the head bag 54 can be effectively received and protected. Here, since the side airbag 50 is formed in a bag shape by joining the peripheral portions of the door-side bag film material 51 and the occupant-side bag film material 52, the structure of the side airbag 50 and the structure of the dividing line 57 are provided. Is simplified and the reliability is excellent.
[0067]
By the way, as shown in FIG. 12, in the case where the impact absorbing member 24 is not provided outside the door width direction corresponding to the airbag storage portion 44 inside the door body 10 </ b> A, When the distance to the side mounting portions 40a and 40b is set to be smaller than the distance from the impact bar 22 to the upper mounting portions 40c and 40d, the side impact load acting on the lower mounting portions 40a and 40b is reduced. It becomes larger than the side impact load acting on the upper mounting portions 40c and 40d. Particularly, 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.
[0068]
At the time of such a side collision, the lower portion of the airbag unit 40 is greatly displaced toward the passenger compartment side from the upper portion as shown by a two-dot chain line, so that the inflator 70 is damaged at the time of a side collision, Damage to the gas passage 59 extending from the airbag 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. Further, in this case, since the third allowable portion 18 that allows the upward displacement of the inflator housing portion 45 is provided, a side impact load acts.Airbag unit 40When the gas is displaced toward the cabin, the gas passage portion forming portion 46 is allowed to be displaced toward the cabin through the permissible portion 18. Therefore, the gas passage portion forming portion 46 is compressed or deformed into a bent shape. Can be prevented.
As shown in FIGS. 13 and 14, a seat mounting type in which a side airbag device is mounted on a seat back of a seat device of a vehicle C of a pillarless type (open roof type) will be described.
[0069]
As shown in FIG. 13, a description will be given of a seat-mounted side airbag device incorporated in a seatback 4A of a seat 3A on the driver's seat side of an automobile C.
A seat back frame 75 made of a steel pipe material is provided on an outer peripheral portion of a rear portion in the seat back 4A. 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 pad material 76 is attached, the surface of the pad material 76 is covered with a skin material 77, and bulging portions 4a bulging forward are formed on both left and right sides of the seat back 4A.
[0070]
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, an airbag unit 40A, and the like. In the middle part near the right side of the inside, a seat back frame 75 is fixedly disposed in a housing part formed in the pad material 76, and an inflator (not shown), a folded side airbag 50A, and these inflators are provided. A case 78 for accommodating the side airbag 50A. The pad material 76 on the front side of the housing portion is partially breakable so that the side airbag 50A can be deployed forward.
[0071]
The side airbag 50A is configured substantially in the same manner as in the above-described embodiment so as to extend vertically, and has an upper head bag portion 54A corresponding to the head MH and a lower side bag portion MB corresponding to the trunk MB. A dividing line 57A for partitioning the trunk bag portion 53A is also formed in the same manner. 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 portion is located below the belt line 6, and the rear portion is located below the belt line 6. Are formed on the upper side, that is, cross the belt line 6. Here, the division line 57A may be formed so that the front part is located on the upper side and the rear part is located on the lower side with respect to the belt line 6.
[0072]
When another vehicle or the like collides with the vehicle C and a side collision is detected by the side collision detection sensor, the vehicle is generated from the inflator during an instant until the occupant makes a secondary collision with the side door 2 due to the side collision. The deployment gas is supplied to the side airbag 50A, and the side airbag 50A is deployed from the airbag unit 40A toward between the occupant and the side door 2, so that the occupant is received and protected. That is, at the time of a side collision, first, the trunk MB of the occupant (driver) is received by the side airbag 50A, and then the head MH is received by the dividing line 57A so as to receive the head MH. The flow of gas to the head portion 53A can be restricted, and the inflation of the head portion 54A with respect to the body portion 53A can be delayed.
[0073]
Further, 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, and the front portion is located below the belt line 6, and the rear portion is located below the belt line 6. Is also located on the upper side, that is, intersects with the belt line 6, so that the division line 57A does not become parallel to the belt line 6, and does not become parallel to the swing axis on which the occupant's head MH swings at the time of a side collision. It becomes difficult for the side airbag 50A to be bent at the position of the division line 57A, and the protection function of protecting the occupant's head MH with the head bag portion 54A at the time of a side collision can be significantly enhanced as in the above-described embodiment. it can.
[0074]
In addition, even if the seat 3A is slid back and forth to change its front-back position, the relative position between the occupant and the side airbag 50A in the front-back direction does not change, so that the side airbag 50A can be downsized. This is advantageous in cost.
[0075]
Next, a modification of the above embodiment will be described.
1] The dividing lines 57, 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 constituted by a large one integrally extending in the vertical direction.
3] The dividing lines 57, 57A may be formed so as to partition the head-side bag portion 54A and the trunk-side bag portion 53A by opening the rear end side ventilation path 56.
[0076]
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 weaker than the strength of the portion corresponding to the upper mounting portions 40c, 40d. 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 panel 20, that is, the mounting strength of the upper mounting portions 40c, 40d and the lower side. Due to the difference in the mounting strength between the mounting portions 40a and 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. Good. 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.
[0077]
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]
【The invention's effect】
According to the invention of claim 1,Since the dividing line in the unfolded state is formed to be lower toward the front so that the height of the upper end of the lower bag portion is lower toward the front with respect to the vehicle body floor, the height or sitting height of the occupant including the occupant of the child is also reduced. It is normal to adjust the seat to the front position as the seat is lower, so by setting the split line lower toward the front, the split line is located on the side of the occupant's neck regardless of the height or the like of the occupant. The bag portion for the trunk can be reliably deployed at the position corresponding to the trunk.
Also,Since the dividing line is not parallel to the upper end belt line of the door body and is not parallel to the swing axis where the occupant's head swings at the time of a side collision, it is difficult for the side airbag to be bent at the position of the dividing line Become. Since the deployed upper bag part has rigidity to resist bending, even if the upper bag part is not supported by window glass or the car body above the belt line, the side airbag is hard to break at the split line part, The performance of the 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.
[0079]
Since the protection function of the upper bag portion is improved, the size of the side airbag can be reduced, and the side airbag device can be applied to an open roof type vehicle and a pillarless type vehicle. Since it is possible to reduce the size of the side airbag, 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.
[0080]
[0081]
[0082]
Claim2According to the invention, since the dividing line is formed so as to intersect the belt line in the deployed state in the vehicle body side view, at least a part of the dividing line corresponds to the inside of the door body in the deployed state. Position, which makes it harder to fall outward when receiving the occupant's head, making it difficult for the side airbag to bend along the line parallel to the belt line, and enhancing the protection function that protects the head by the upper bag part Can be. Other claims1It has the same effect as.
[0083]
Claim3According to the invention, the side door is excellent in rigidity and strength and has an internal space, so that the side door can be easily equipped with the side airbag device, and even when the side door and the occupant are narrow, the side airbag is provided. Can be reliably deployed between the side door and the occupant. Moreover, even when 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. Other claims1It has the same effect as.
[0084]
Claim4According to the invention, in the split line, the front part is located below the belt line and the rear part is located above the belt line in the unfolded state.One, twoAlmost the same as above, when deployed, the front of the dividing line is located at the position corresponding to the inside of the door body, and the rear of the dividing line is located at the position corresponding to the inside of the window glass. In addition, the upper bag portion is less likely to fall outward, 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. Other claims2It has the same effect as.
[0085]
Claim5According to the invention, the position and the inclination angle of the dividing line in the deployed state are set so that the dividing line is located on the side of the neck of the occupant seated on the seat, in correspondence with the front-back position of the seat. For the occupants of various heights, the split line in the deployed state can be positioned on the side of the neck, and the lower bag portion can be reliably deployed at the position corresponding to the torso, and can correspond to the head. The upper bag portion can be reliably deployed at the position. The other effects are the same as those of the third aspect.
[0086]
Claim6According to the invention, at least the front end portion 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 seat is adjusted to the front position as the occupant's height or the like becomes lower. Even if at least 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 upper bag portion of the side airbag reliably receives the head of the occupant. Therefore, the size of the side airbag can be reduced, which is advantageous in cost. The other effects are the same as those of the first aspect.
[0087]
Claim7According to the invention, the upper end position of the pillar vertically arranged at the side of the front seat and behind the front side door is substantially the same height as the belt line.Composed,In this pillarless type vehicle, the upper bag portion that has received the head of the occupant at the time of a side collision cannot be supported by the pillar. However, since the vehicle has the configuration of claim 1, the same effect as that of claim 1 is achieved.
[0088]
Claim8According to the invention, the side airbag is configured such that the thickness in the vehicle width direction of the part of the division line in the deployed state is smaller than the thickness of the other parts in the vehicle width direction, so that the part of the division line in the deployed state When the dividing line is parallel to the belt line, there is a possibility that the upper bag portion may fall to the outside at the time of a side collision. As in the case of 1, the protection function of the upper bag portion for protecting the occupant's head in the event of a side collision can be increased to a necessary level, and the structure of the dividing line is simple and advantageous in terms of manufacturing cost.
[0089]
Claim9According to the 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 occupant-side bag film material, and the two bag film materials are formed at the division line portion while leaving the ventilation path. Are joined, the structure of the side airbag and the structure of the dividing line are simplified, and the reliability is excellent. 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 viewed from the inside of the 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 of 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
1a Body floor
2 Side door
3 sheets
4 Seat back
5 Side airbag device
6 Belt line
7 Center pillar
8 Side sill
10 Door body
13 Armrest
16 First displacement allowing part
17 Second displacement allowing part
20 Inner panel
22 Impact Bar
24, 25 Shock absorbing member
26 1st opening
27 Second opening
28 Reinforcement members
30 Side collision detection sensor
40 airbag unit
40a, 40b Lower mounting part
40c, 40d Upper mounting part
44 Airbag storage
45 Inflator storage
46 Gas passage section forming section
50 Side airbag
51 Door side bag membrane material
52 Occupant side bag membrane material
53 Body Bag
54 Head Bag
55,56 air passage
57 Division Line
58 Tether (Regulatory Department)
59 Gas passage
61 Rear slope
62 Slope
64 curved part
70 Inflator
71 Gas outlet

Claims (9)

In a side airbag device including a side airbag inside a side door so as to be deployed between an occupant and the side door when a side collision detection unit of the vehicle detects a side collision,
The side airbag is formed integrally with a lower bag portion deployed at a position inside the door body of the side door and an upper bag portion deployed at a position inside the window glass above the upper end belt line of the door body. Become
In the side airbag, a dividing line is formed to separate the upper and lower portions of the side airbag vertically with a ventilation path of a predetermined size therebetween, and the height of the upper end of the lower bag portion becomes lower toward the front with respect to the vehicle body floor. As described above, the side airbag device of the pillarless type vehicle is characterized in that the divided line is lowered toward the front in the deployed state. 2. The side airbag device for a pillarless type vehicle according to claim 1 , wherein the split line is formed so as to intersect the belt line in a deployed state when viewed from the side of the vehicle body. 3. The side airbag is mounted on the side door, and the side airbag can be deployed between an occupant seated on the seat and the side door regardless of the front and rear position of the slidable seat. The side airbag device for a pillarless type vehicle according to claim 1 , further comprising: 3. The pillarless device according to claim 2 , wherein 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. 4. Side airbag device for a model vehicle. The position and 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 seated on the seat. Item 4. A side airbag device for a pillarless vehicle according to Item 3 . 2. The side airbag device for a pillarless type 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 division line. 3. . The vehicle is characterized in that the upper end position of a pillar arranged vertically in the side of the front seat and behind the front door is configured to be substantially the same height as the belt line. The side airbag device for a pillarless type vehicle according to claim 1. 2. The pillarless vehicle according to claim 1, wherein the side airbag is configured such that a thickness in a vehicle width direction of a portion of the division line in a deployed state is smaller than a thickness of another portion in a vehicle width direction. 3. Side airbag device for a model vehicle. 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. The side airbag device for a pillarless type vehicle according to claim 1, wherein: