JPWO2019031110A1 - Side airbag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side airbag device capable of adjusting the rigidity of an airbag cushion with a simple structure. SOLUTION: A cushion 106 is formed in a bag shape by an inner panel 106a, an outer panel 106b, and an intermediate panel 128 joined to a predetermined range of an edge of each panel. The cushion 106 further includes a rupturable seam 130 that joins the edges of the inner panel 106a and the outer panel 106b with the intermediate panel 128 folded inside the cushion 106, and a strip-shaped seam on the outer surface of the inner panel 106a. One end 116a is joined near the intermediate panel 128 of the inner panel 106a, and the other end 116b is joined to a predetermined location on the outer surface of the inner panel 106a. In the cushion 106, the seam 130 is broken by the force when the occupant comes into contact with the first tether 116, the intermediate panel 128 is released, the volume increases, and the internal pressure decreases. [Selection diagram] Figure 2

Description

The present invention relates to a side airbag device for laterally restraining an occupant of a vehicle.

BACKGROUND ART In recent years, vehicles are equipped with an airbag device as standard equipment. The airbag device is a safety device that operates in an emergency such as a vehicle collision, and inflates and deploys the airbag cushion by gas pressure to receive and protect an occupant.

There are various types of airbag devices depending on the installation location and application. For example, a front airbag device is provided at the center of the steering wheel to protect the driver from a front-back collision. In addition, a curtain airbag device is installed near the ceiling above the side window and a side airbag device is installed on the side of the seat in order to protect the occupant from the impact from the vehicle width direction due to a side collision or the like. Has been.

The current airbag cushion has been devised in various elements such as the degree of deployment behavior and the injury value to the occupant. For example, in the side airbag device (side airbag) described in Patent Document 1, a strap 60 (an upper strap portion 61, a lower strap portion) is provided on the outside of the airbag 40 in order to suppress unnecessary movement of the airbag 40. Section 65) is provided.

JP, 2016-83955, A

As described above, the airbag cushion is also required to reduce the injury value to the occupant. For example, the load that the occupant receives from the airbag cushion increases in proportion to the load when restrained. The rigidity of the airbag cushion depends on the output of the inflator, which is the gas supply source, but changing the output of the inflator according to the load is not an efficient means in terms of complexity of the structure and cost.

The present invention has been made in view of such problems, and an object thereof is to provide a side airbag device capable of adjusting the rigidity of an airbag cushion with a simple structure.

In order to solve the above-mentioned problems, a typical configuration of a side airbag device according to the present invention includes an inner panel that is inflated and deployed on a side of a seat of a vehicle and is provided on a side of an occupant seated on the seat, and an inner panel. An airbag cushion formed in a bag shape by an outer panel located on the opposite side of the panel from the occupant, and an intermediate panel joined to respective edges of the inner panel and the outer panel in a predetermined range, and the intermediate panel is an airbag cushion. A rupturable seam that joins the edges of the inner panel and the outer panel over a predetermined range in the state of being folded inside, and a strip-shaped seam provided on only one or both of the inner panel and the outer panel. The tether has one end joined to the inner panel or the outer panel in the vicinity of the intermediate panel and the other end joined to a predetermined position on the outer surface of the inner panel or the outer panel, so that the tether is occupant or other member. The structure is characterized in that the seam is broken by the force when the structures contact with each other and the intermediate panel is released, the volume of the airbag cushion increases and the internal pressure decreases.

With the above configuration, the airbag cushion has a mechanism in which the rigidity changes according to the degree of load when the occupant is restrained. Therefore, for example, when the collision speed is high, the airbag cushion can be made softer than usual and the occupant injury value can be suppressed.

One end of the tether may be joined near the seam. With this configuration, the seam can be efficiently broken through the tether.

One end of the tether may be joined to the seam in an overlapping manner. Also with this configuration, the seam can be efficiently broken through the tether.

One end of the tether may be joined to the inner panel or the outer panel by a seam. Also with this configuration, the seam can be efficiently broken through the tether.

The above-mentioned predetermined range may include at least the vehicle front side of the airbag cushion. By providing the intermediate panel and the seam on the front side of the vehicle, it is possible to preferably realize the airbag cushion with adjustable rigidity.

The predetermined range may include a continuous range from the vehicle front side of the airbag cushion to the vehicle upper side. Also with this configuration, it is possible to preferably realize the airbag cushion whose rigidity can be adjusted.

The tether includes a first tether provided on the outer surface of the inner panel, the first tether being located along the inner panel of the inflated airbag cushion before the airbag cushion restrains the occupant. It is preferable to have a length such that it is convexly stretched to the side. The first tether of this configuration has a tension that is stretched along the convex shape of the inner panel, that is, a tension that does not change the shape of the inner panel when the airbag cushion is simply inflated before restraint of the occupant. Get nervous. Therefore, with the above-mentioned first tether, the seam can be ruptured only when the occupant comes into contact without affecting the occupant restraining force of the airbag cushion or rupturing the seam by itself. .

The above-mentioned tether includes a second tether provided on the outer surface of the inner panel, and the second tether is provided along the outer panel of the inflated airbag cushion before the airbag cushion restrains the occupant. Should have a length such that it is convexly stretched on the opposite side. The second tether of this configuration also has a tension that is stretched along the convex shape of the outer panel, that is, a tension that does not change the shape of the outer panel when the airbag cushion is simply inflated before restraint of the occupant. get nervous. Therefore, with the second tether described above, the seam is broken only when it contacts the occupant or another structure without affecting the occupant restraining force of the airbag cushion or breaking the seam by itself. Will be possible.

The side airbag device may further include one or a plurality of baffles that are laid across the inner panel and the outer panel in the vehicle width direction inside the airbag cushion. By providing the baffle, it is possible to limit the thickness of the airbag cushion in the vehicle width direction and prevent the seam from breaking during normal inflation and deployment.

The one or more baffles described above may include a rear baffle disposed on the vehicle rear side inside the airbag cushion, and the other end of the tether may be joined to the rear baffle so as to overlap. With this configuration, the other end of the tether can be fully joined to the airbag cushion, and a force can be efficiently applied to the seam on the one end side of the tether.

The one or more baffles may include a baffle that is longer in the vertical direction than in the vehicle width direction. With the baffle having this configuration, the thickness of the airbag cushion in the vehicle width direction can be efficiently suppressed.

According to the present invention, it is possible to provide a side airbag device capable of adjusting the rigidity of an airbag cushion with a simple structure.

It is the figure which illustrated the side airbag apparatus concerning the embodiment of the present invention. It is the figure which illustrated the airbag cushion of FIG.1(b) independently. It is the figure which illustrated the mode of the airbag cushion before and after fracture|rupture of the seam of FIG.2(b). It is the figure which illustrated the modification of the airbag cushion of FIG.1(b). It illustrates the state after the seam of the airbag cushion of FIG. 4( a) is broken.

100... Side airbag device, 102... Seat, 104... Seat back, 106... Cushion, 106a... Inner panel, 106b... Outer panel, 108... Inflator, 110a... Upper stud bolt, 110b... Lower stud bolt, 112... Rear chamber, 114... Front chamber, 116... First tether, 116a... One end of first tether, 116b... Other end of first tether, 118... Baffle, 120, 122... Vent hole, 124-126... Baffle, 128... Intermediate panel, 130... Seam, 132... Sewn portion on one end side, 134... Sewn portion on other end side, 136... Impactor, 200... Cushion of modified example, 202... Second tether, 202a... One end of second tether, 202b ...The other end of the second tether, 204... the sewn portion on one end side, 206... the sewn portion on the other end side

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating the understanding of the invention, and do not limit the invention unless otherwise specified. In this specification and the drawings, elements having substantially the same function and configuration are denoted by the same reference numerals to omit redundant description, and elements not directly related to the present invention are omitted. To do.

FIG. 1 is a diagram illustrating a side airbag device 100 according to an embodiment of the present invention. In FIG. 1A, the side airbag device 100 and the seat 102 on the right side of the vehicle to which the side airbag device 100 is applied are illustrated from the vehicle width direction left side, that is, the vehicle width direction inner side (vehicle inner side). .. 1(a) and all other drawings of the present application, the vehicle front-rear direction is indicated by arrows F (Forward) and B (Back), and the vehicle width direction is indicated by arrows L (Left) and R (Right), respectively. The vehicle vertical direction is illustrated by arrows U(up) and D(down), respectively.

As illustrated in FIG. 1A, the side airbag device 100 is installed inside the seat back 104 of the seat 102 outside the vehicle in the present embodiment. The side airbag device 100 is configured to include an airbag cushion (cushion 106) that restrains an occupant, and an inflator 108 that supplies gas to the cushion 106. The cushion 106 is wound or folded before operation and is housed in a housing or the like built in the seat back 104. Since the seat cover or the like covers the cushion 106 in the stored state, the cushion 106 is invisible from the outside.

The inflator 108 is a gas generator, and in the embodiment, a cylinder type is used. The inflator 108 is included in a rear portion of a rear chamber 112, which will be described later, of the cushion 106 in a direction in which the seat belt 104 extends in the up-down direction. The inflator 108 is electrically connected to the vehicle side, receives a signal resulting from the detection of an impact from the vehicle side, and operates to supply gas to the cushion 106.

Currently popular inflators are a type that is filled with a gas generant and burns it to generate gas, a type that is filled with compressed gas and supplies gas without generating heat, or a type that burns There is a hybrid type that uses both gas and compressed gas. As the inflator 108, any type of inflator can be used.

The cushion 106 is attached to the seat back 104 using the two stud bolts 110a and 110b of the inflator 108. The stud bolts 110a and 110b penetrate the base cloth of the cushion 106 and are exposed to the outside, and are fastened and fixed to the frame of the seat back 104 or the like.

FIG. 1B is a diagram exemplifying a state after the cushion 106 of FIG. 1A is inflated and deployed. When a sensor provided in the vehicle detects an impact, an operation signal is sent to the inflator 108 to eject gas, and the gas is used to cause the cushion 106 to inflate and expand into the indoor space by removing the skin of the seatback 104 or the like. ..

The cushion 106 is inflated and expanded into a generally flat shape on the side of the seat. The outer surface of the cushion 106 is composed of an inner panel 106a on the side of a passenger sitting on a seat in the vehicle width direction, an outer panel 106b on the side opposite to the passenger as viewed from the inner panel 106a, and an intermediate panel 128 described later. is doing. Each panel is made of a base cloth, and is formed into a bag shape as a whole by sewing or adhering. In addition, each panel does not need to be independent of each other and may be a continuous fabric as a whole. In that case, the cushion 106 can also be formed by, for example, weaving using OPW (One-Piece Woven).

In the present embodiment, a strip-shaped first tether 116 is stretched on the outer surface of the inner panel 106a. The first tether 116 is provided so as to extend in the front-rear direction of the vehicle, and in addition to restraining the swing of the cushion 106 during expansion and deployment, the load from the occupant is described later in the seam 130 (see FIG. 2B). ).

FIG. 2 is a diagram illustrating the airbag cushion (cushion 106) of FIG. 1B alone. FIG. 2A illustrates the cushion 106 by partially penetrating the inside from the inside of the vehicle.

The inside of the cushion 106 is partitioned by a baffle 118 into a rear chamber 112 and a front chamber 114. The baffle 118 is a wall-shaped portion formed by using the same type of base cloth as the inner panel 106a and the like, and is laid across the inner panel 106a and the outer panel 106b in the vehicle width direction and connected thereto. The baffle 118 is provided with a plurality of vent holes 120, 122 and the like. The vent holes 120, 122 and the like are gas flow ports, and allow gas to pass from the rear chamber 112 side to the front chamber 114 side.

The rear chamber 112 is a portion located at the root of the cushion 106, and is formed in a lower portion on the vehicle rear side. The rear chamber 112 has a vertically long shape along the seat back 104 (see FIG. 1B). The inflator 108 is built in the rear chamber 112. The capacity of the rear chamber 112 is smaller than that of the front chamber 114, and immediately after the inflator 108 is operated, the rear chamber 112 quickly becomes high pressure. Due to the rear chamber 112, the epidermis of the seat back 104 (see FIG. 1B) can be quickly torn, and the inflation and deployment of the entire cushion 106 can be quickly performed.

The front chamber 114 is a portion that expands and deploys widely toward the front and the upper side of the rear chamber 112. The front chamber 114 inflates and deploys from the seat back 104 (see FIG. 1B) to a range where the occupant in front of the vehicle is present, and positively restrains the occupant.

A plurality of baffles are also provided inside the front chamber 114. The baffles 124 to 126 are extended across the inner panel 106a and the outer panel 106b in the vehicle width direction, and limit the thickness of the cushion 106 in the vehicle width direction. In particular, the baffles 124 to 126 are configured to be longer in the vertical direction than in the vehicle width direction, so that the thickness of the cushion 106 in the vehicle width direction can be efficiently suppressed. The baffles 124 to 126 also limit the thickness of the cushions 124 to 126 to prevent the seam 130, which will be described later, from breaking during normal expansion and deployment.

The above-described intermediate panel 128 is folded inside the front chamber 114. The intermediate panel 128 is joined to respective edges of the inner panel 106a and the outer panel 106b from the vehicle front side to the vehicle upper side in a predetermined range. The intermediate panel 128 is normally folded inside the front chamber 114 and fastened by the seam 130, and is exposed to the outside when the seam 130 is broken due to a load larger than a predetermined amount by an occupant.

2B is a cross-sectional view taken along the line AA of FIG. The seam 130 joins the edges of the inner panel 106a and the outer panel 106b with the intermediate panel 128 folded inside the cushion 106. The seam 130 can be provided by sewing using a thread that breaks with a certain amount of force, sewing that is released with a certain amount of force, or the like.

One end 116a of the first tether 116 is joined to the inner panel 106a near the intermediate panel 128 by a sewing portion 132. The other end 116b of the first tether 116 crosses the predetermined range of the outer surface of the inner panel 106a from the one end 116a, and then is sewn to the inner panel 106a by the sewing portion 134 at a position overlapping the rear baffle (baffle 126) on the vehicle rear side. It is joined. The baffle 126 is a baffle arranged on the vehicle rear side inside the cushion 106 as a rear baffle. The other end 116b of the first tether 116 can be fully joined by the inner panel 106a by overlapping and joining the baffle 126.

As described above, the first tether 116 is tensioned when the cushion 106 is inflated and deployed, and suppresses the swing of the cushion 106. Therefore, the length from the sewn portion 132 to the sewn portion 134 of the first tether 116 is shorter than the length from the place where the sewn portion 132 of the inner panel 106a is provided to the place where the sewn portion 134 is provided. With this configuration, the first tether 116 can be tensioned with an appropriate tension in the longitudinal direction when the cushion 106 is inflated and deployed.

In the present embodiment, the first tether 116 is provided so as to cover the range of the inner panel 106a that the occupant contacts, that is, the occupant restraint range. Then, the first tether 116 not only suppresses the swing of the cushion 106, but also functions as a factor that transmits the load received from the occupant to the seam 130 and breaks the seam 130.

FIG. 3 is a view exemplifying a state of the airbag cushion (cushion 106) before and after the seam 130 of FIG. 2B is broken. In the present embodiment, the rigidity of the cushion 106 can be adjusted according to the load from the occupant by using the first tether 116 and the seam 130.

FIG. 3A illustrates the state of the cushion 106 before the seam 130 is broken. The seam 130 continuously joins the inner panel 106a and the outer panel 106b over a predetermined range from the vehicle front side to the vehicle upper side.

In the cushion 106 in a state before restraining the occupant, the first tether 116 is set to be in a state of being convexly stretched toward the occupant along the inner panel 106a of the inflated and expanded cushion 106. That is, the length from one end 116a (see FIG. 2B) of the first tether 116 to the other end 116b is such that when the cushion 106 is expanded and deployed, it is strongly pulled and deforms the inner panel 106a. In addition, the length is not such that it hangs down from the outer surface of the inner panel 106a, and the tension is such that it is tensioned to the occupant side along the outer surface of the inner panel 106a. With this length, the first tether 116 does not deform the cushion 106 to affect the occupant restraining force in a state where the cushion 106 is simply inflated before restraint of the occupant, and also the seam itself. It is possible to break the seam 130 only when the occupant comes into contact without breaking the seam 130.

FIG. 3B illustrates the state of the cushion 106 after the seam 130 is broken. In FIG. 3B, an impactor 136, which is a test device simulating an occupant, is illustrated instead of the occupant. Since the first tether 116 is provided within the occupant restraint range, the occupant (impactor 136) contacts the first tether 116. The load from the occupant at this time is also transmitted to the seam 130 via the first tether 116. When the load applied from the impactor 136 to the first tether 116 is larger than a certain amount, the seam 130 is broken by the load. Then, the intermediate panel 128 is opened and the volume of the cushion 106 is increased. As a result, the internal pressure of the cushion 106 decreases, and the rigidity of the inner panel 106a also decreases.

As described above, the cushion 106 of the present embodiment has a mechanism in which the rigidity changes according to the degree of the load when the occupant is restrained. Therefore, for example, when the collision speed is high, the cushion 106 can be made softer than usual and the injury value of the occupant can be suppressed. The configuration using the first tether 116, the intermediate panel 128, and the seam 130 of the present embodiment is simpler than the mechanism that changes the output itself of the inflator 108 (see FIG. 1A and the like). Therefore, the cost can be suppressed appropriately.

In the present embodiment, the intermediate panel 128 and the seam 130 are provided from the vehicle front side of the cushion 106 to the vehicle upper side, thereby increasing the volume of the cushion 106. However, the range in which these intermediate panels 128 and the like are provided is not limited, and the volume of the cushion 106 can be increased or decreased by increasing or decreasing the range in which they are provided.

In FIG. 2B, one end 116 a of the first tether 116 is joined to the inner panel 106 a by both the seam 130 and the sewing portion 132. However, the one end 116a may be joined to the inner panel 106a only by the seam 130, or may be joined to the inner panel 106a only by the sewn portion 132. Even when the one end 116a is joined to the inner panel 106a only by the sewn portion 132, the sewn portion 132 may be provided in the vicinity of the seam 130 on the inner panel 106a, or the sewn portion 132 may be provided so as to overlap the seam 130. As a result, the load from the occupant can be efficiently transmitted from the first tether 116 to the seam 130.

There is no limitation on the location of the other end 116b of the first tether 116, as long as the first tether 116 can be installed so as to cover the occupant restraint range. The other end 116b may be appropriately joined to a predetermined portion of the inner panel 106a, but if it is overlapped with the sewing portion of the baffle 126 as in the present embodiment, more complete joining is possible, and the one end 116a side to the seam 130 is formed. And the load can be efficiently transmitted.

(Modification)
FIG. 4 is a diagram illustrating a modified example (cushion 200) of the airbag cushion (cushion 106) of FIG. 1B. Hereinafter, the same components as those already described will be denoted by the same reference numerals and the description thereof will be omitted. In addition, components having the same names as those already described have the same function even if different reference numerals are given, unless otherwise specified.

FIG. 4A is a diagram illustrating the cushion 200 after inflation and expansion, corresponding to FIG. 1B. The cushion 200 is provided with a second tether 202 on the outer surface of the outer panel 106b as a band-shaped tether, and is different from the cushion 106 having the first tether 116 on the inner panel 106a (see FIG. 1B). The composition is different. The second tether 202 is also provided so as to extend in the vehicle front-rear direction, and in addition to restraining the swing of the cushion 200 during expansion and deployment, a seam 130 (FIG. 4(b)) described below is applied to a load from an occupant. See)).

FIG. 4B is a cross-sectional view at the position of the second tether 202 of the cushion 200 corresponding to FIG. 2B. One end 202a of the second tether 202 is joined to the outer panel 106b near the intermediate panel 128 by a sewn portion 204. The other end 202b of the second tether 202 is joined to the outer panel 106b by a sewn portion 206 at a portion overlapping the baffle 126 on the vehicle rear side after crossing a predetermined range of the outer surface of the outer panel 106b from the one end 202a. The other end 202b of the second tether 202 can be fully bonded to the outer panel 106b by overlapping and bonding the baffle 126.

The second tether 202 is tight when the cushion 200 is inflated and deployed, and suppresses the swing of the cushion 200. Therefore, the length from the sewn portion 204 to the sewn portion 206 of the second tether 202 is shorter than the length from the portion where the sewn portion 204 of the outer panel 106b is provided to the portion where the sewn portion 206 is provided. With this configuration, the second tether 202 can be tensioned in its longitudinal direction with an appropriate tension when the cushion 200 is expanded and deployed.

In the cushion 200 before restraining the occupant, the second tether 202 is set to be in a state of being convexly stretched on the side opposite to the occupant along the outer panel 106b of the expanded and deployed cushion 200. That is, the length from the one end 202a to the other end 202b of the second tether 202 is not such a length that the outer panel 106b is deformed by being strongly pulled when the cushion 200 is inflated and deployed. Further, the length is not such that it hangs from the outer surface of the outer panel 106b. That is, the length is such that a tension is generated along the outer surface of the outer panel 106b to the side opposite to the occupant so as to be convex. With this length, the second tether 202 does not deform the cushion 200 to affect the occupant restraining force in a state where the cushion 200 is simply inflated before restraint of the occupant, and also the seam itself. It is possible to break the seam 130 only when receiving a load when restraining an occupant without breaking the seam 130.

FIG. 5 illustrates an example of the seam 130 (see FIG. 4B) of the airbag cushion (cushion 200) of FIG. 4A after fracture. Since the second tether 202 is provided on the side opposite to the occupant, the occupant sitting on the seat does not come into direct contact with the second tether 202. Instead, the second tether 202 may contact with other structural parts such as a door trim or a pillar of a passenger compartment when the occupant contacts the inner panel 106a and the entire cushion 200 is pushed away from the seat. There is. At this time, the load received from another structure is also transmitted to the seam 130 via the second tether 202. When the load applied to the second tether 202 is larger than a certain level, the seam 130 is broken by the load. Then, the intermediate panel 128 is opened and the volume of the cushion 106 is increased. As a result, the internal pressure of the cushion 106 decreases, and the rigidity of the inner panel 106a also decreases.

As described above, the cushion 200 of the modified example also has a mechanism in which the rigidity changes according to the degree of the load when the occupant is restrained. For example, when the entire cushion 200 is strongly pushed by the occupant when the collision speed is fast, the cushion 200 can be made softer than usual according to the load received from the door trim or the like, and the injury value of the occupant can be suppressed. ing. The configuration using the second tether 202, the intermediate panel 128, and the seam 130 is simpler than the mechanism that changes the output itself of the inflator 108 (see FIG. 4A, etc.) and costs less. It can be suppressed appropriately.

As a further modification, it is possible to provide both the first tether 116 (see FIG. 1B) and the second tether 202 (see FIG. 4A) for one airbag cushion. is there. If the airbag cushion is provided with the first tether 116 and the second tether 202 at the same time, it is possible to cope with the load from either the load received from the occupant side or the load opposite to the occupant side. Will be possible. In other words, the airbag cushion having this configuration can handle both the load received from the side near the collision point (near side) of the vehicle and the load received from the side far from the collision point (far side). .. With this configuration, it is possible to appropriately respond to a collision load from each direction to break the seam 130 and more efficiently reduce the internal pressure and the rigidity.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. It is obvious to those skilled in the art that various changes or modifications can be conceived within the scope described in the claims, and naturally, these also belong to the technical scope of the present invention. Understood.

Further, in the above embodiment, an example in which the airbag device according to the present invention is applied to an automobile has been described, but it is also possible to apply to an aircraft, a ship, etc. other than an automobile, and similar operational effects can be obtained. it can.

INDUSTRIAL APPLICATION This invention can be utilized for the side airbag apparatus which restrains the vehicle occupant from the side.

Claims (11)

An inner panel provided on the side of an occupant who is inflated and deployed on the side of a vehicle seat and seated on the seat, an outer panel located on the opposite side of the inner panel from the occupant, and the inner panel and the outer panel. An airbag cushion formed in a bag shape with each edge and an intermediate panel joined in a predetermined range,
A breakable seam that joins the edges of the inner panel and the outer panel over the predetermined range in a state where the intermediate panel is folded inside the airbag cushion,
A tether provided in a strip shape on only one or both of the inner panel and the outer panel, and
Equipped with
The tether has one end joined to the inner panel or the outer panel in the vicinity of the intermediate panel and the other end joined to a predetermined location on the outer surface of the inner panel or the outer panel,
The side airbag is characterized in that the seam is ruptured by a force generated when an occupant or other structure comes into contact with the tether, thereby releasing the intermediate panel, increasing the volume of the airbag cushion, and lowering the internal pressure. apparatus. The side airbag device according to claim 1, wherein one end of the tether is joined to the vicinity of the seam. The side airbag device according to claim 1, wherein one end of the tether is overlapped and joined to the seam. The side airbag device according to claim 1, wherein one end of the tether is joined to the inner panel or the outer panel by the seam. The side airbag device according to any one of claims 1 to 4, wherein the predetermined range includes at least a vehicle front side of the airbag cushion. The side airbag device according to claim 5, wherein the predetermined range includes a continuous range from the vehicle front side to the vehicle upper side of the airbag cushion. The tether includes a first tether provided on an outer surface of the inner panel,
The first tether has a length such that the first tether is in a state of being stretched to the occupant side along the inner panel of the inflated airbag cushion before the airbag cushion restrains the occupant. The side airbag device according to any one of claims 1 to 6, characterized in that: The tether includes a second tether provided on an outer surface of the outer panel,
The second tether has such a length that, before the airbag cushion restrains the occupant, the second tether is in a state of being stretched to a side opposite to the occupant along the outer panel of the inflated and expanded airbag cushion. The side airbag device according to any one of claims 1 to 6, further comprising: 9. The side airbag device further includes one or a plurality of baffles that are extended in the vehicle width direction between the inner panel and the outer panel inside the airbag cushion. The side airbag device according to item 1. The one or more baffles include a rear baffle disposed on the vehicle rear side inside the airbag cushion,
The side airbag device according to claim 9, wherein the other end of the tether is overlapped and joined to the rear baffle. The side airbag device according to claim 9 or 10, wherein the one or more baffles include a baffle that is longer in a vertical direction than in a vehicle width direction.

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