JP2018095170A - Curtain air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curtain air bag device capable of further enhancing a protection performance of a head in side crash time of a vehicle.SOLUTION: An air bag 20 comprises: plural chambers 30 arranged in a cross direction of a vehicle and are partitioned by a partition part 50; a set formed of a first chamber 31 and a second chamber 32 adjacent to each other out of the plural chambers 30; and first tethers 41, 42 formed of first part 41a, first part 42a extended forward of a vehicle from intermediate partition parts 50P, 50Q between the first chamber 31 and second chamber 32, and second part 41b, second part 42b extended rearward of a vehicle from the intermediate partition parts 50P, 50Q, in which the first part 41a, first part 42a are arranged on a vehicle outside surface side of the first chamber 31 and fixed to the partition part 50, the second part 41b, second part 42b are arranged on a cabin surface side of the second chamber 32 and fixed to the partition part 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a curtain airbag device for a vehicle.

  2. Description of the Related Art Conventionally, a curtain airbag device that protects an occupant from an impact caused by a collision (side collision) with a side surface of a vehicle is known (for example, see Patent Document 1).

  The curtain airbag device includes a sensor that detects a side collision of the vehicle, an airbag that is attached to a side roof rail, and an inflator that supplies gas to the airbag. An airbag is a bag body, and a plurality of (here, two) chambers, the interior of which is partitioned in the front-rear direction by a partition portion, are arranged side by side. When such a curtain airbag device detects that the vehicle has collided, a gas is supplied by an inflator so that the airbag is deployed from the side roof rail along the side of the passenger compartment in a curtain shape outside the occupant. Protect the occupant.

  By the way, when the side surface of the vehicle collides with a pillar-shaped obstacle such as a pole, the head of the occupant who moves obliquely forward outside the vehicle is received by an airbag (chamber). At this time, if the pole enters the vehicle interior side in front of the occupant's head, the chamber in front of the head is pushed by the pole and displaced toward the occupant, and the head is pushed by the chamber. It may be rotated indoors. In particular, when the head is received between the front and rear chambers, this tendency may increase. Such a phenomenon that the head rotates is undesirable for the occupant, and there is room for improvement in improving the occupant's protection performance.

JP 2008-012995 A

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a curtain airbag device that further enhances the protection performance of the head of an occupant during a side collision of a vehicle.

  A first aspect of the present invention that solves the above problems is a curtain airbag device that includes an airbag that is disposed along the vehicle front-rear direction above the side surface of the vehicle compartment and that is deployed between the occupant and the side surface of the vehicle compartment. The airbag is a set of a plurality of chambers arranged in parallel in the front-rear direction of the vehicle and partitioned by a partition portion, and two chambers adjacent to each other among the plurality of chambers. A first chamber located on the side of the first chamber and a second chamber located on the vehicle rear side of the first chamber, and an intermediate partition which is the partition between the first chamber and the second chamber And a second part extending from the intermediate partition part to the rear of the vehicle continuously to the first part. Te The first portion of the tether is disposed on the outer surface side of the first chamber and is fixed to the airbag, and the second portion of the tether is a casing of the second chamber. The curtain airbag device is arranged on the front surface side and fixed to the airbag.

  In the first aspect, due to the bending deformation of the first part at the time of a side collision, the second part pulls the partition part on the rear side of the second chamber forward, and rotates the second chamber toward the vehicle interior side. it can. Thereby, it can protect so that the front of a passenger | crew's head may be pinched | interposed with a 1st chamber, and back may be pinched | interposed with a 2nd chamber. As a result, a phenomenon that the occupant's head rotates can be suppressed, so that the occupant's protection performance can be improved.

  According to a second aspect of the present invention, in the curtain airbag device described in the first aspect, the first portion of the tether is fixed to the partition that partitions the front of the first chamber. It is in the curtain airbag device.

  In the second aspect, the first portion of the tether can be bent regardless of which side portion of the first chamber has a side collision, and the second chamber is rotated to the vehicle interior side more reliably by pulling the second portion. Can be made.

  According to a third aspect of the present invention, in the curtain airbag device described in the first or second aspect, the second portion of the tether is fixed to the partition that partitions the rear of the second chamber. The curtain airbag device is characterized by that.

  In the third aspect, the second chamber can be more reliably rotated toward the vehicle interior side.

  According to a fourth aspect of the present invention, in the curtain airbag device described in any one of the first to third aspects, a plurality of the sets including the first chamber and the second chamber are provided. The curtain airbag device is provided with the tether.

  In the 4th mode, it can protect so that a head may not rotate appropriately according to a crew member's physique.

  According to a fifth aspect of the present invention, in the curtain airbag device according to the fourth aspect, the first chamber of the set on the rear side of the set adjacent to the front and rear is the second chamber of the set on the front side. The curtain airbag device is characterized in that it is commonly used.

  In the fifth aspect, a plurality of positions that can be protected by sandwiching the head between the first chamber and the second chamber can be set at narrower intervals.

  According to a sixth aspect of the present invention, in the curtain airbag device described in the fourth or fifth aspect, the tether disposed on the rear side of the vehicle is higher than the tether disposed on the front side of the vehicle. It is located in the curtain airbag apparatus characterized by the above-mentioned.

  In the sixth aspect, it is possible to protect so as to appropriately suppress the rotation of the head according to the physique of the occupant.

  According to a seventh aspect of the present invention, in the curtain airbag device described in any one of the first to sixth aspects, the tether is disposed so as to face the head of an occupant. In the curtain airbag device.

  In the seventh aspect, the first chamber and the second chamber can be moved so as to sandwich the vicinity of the head more reliably.

  ADVANTAGE OF THE INVENTION According to this invention, the curtain airbag apparatus which improved the protection performance of the passenger | crew's head at the time of the side collision of a vehicle is provided.

It is a front view of the curtain airbag device at the time of deployment. It is the front view which expanded a part of curtain air bag device at the time of deployment. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is CC sectional view taken on the line of FIG. 2, and is the figure which expanded the vicinity of the partition part which partitions off the front side of the 1st chamber of the group P. FIG. FIG. 3 is a cross-sectional view taken along the line C-C in FIG. It is the sectional view on the AA line of FIG. 2 which shows operation | movement of the curtain airbag apparatus when a pole collides with the side. It is the sectional view on the AA line of FIG. 2 which shows operation | movement of the curtain airbag apparatus when a pole collides with the side. It is the sectional view on the AA line of FIG. 2 which shows operation | movement of the curtain airbag apparatus when a pole collides with the side. It is the sectional view on the AA line of FIG. 2 which shows operation | movement of the curtain airbag apparatus when a pole collides with the side.

  Hereinafter, modes for carrying out the present invention will be described. In addition, description of embodiment is an illustration and this invention is not limited to the following description.

<Embodiment 1>
FIG. 1 is a front view of the curtain airbag device when deployed. The longitudinal direction of the vehicle is the X direction, the vehicle width direction is the Y direction, and the height direction is the Z direction. The same applies to the subsequent drawings. The vehicle compartment according to the present embodiment includes a roof side rail 1 and a front pillar 2 that constitute a part of the side surface of the vehicle compartment and extend in the front-rear direction.

  The curtain airbag device 10 according to the present embodiment includes an airbag 20 that is disposed along the X direction (front-rear direction of the vehicle) above the side surface of the vehicle compartment. The airbag 20 is formed in a bag shape by stitching two cloth-like members. Before the airbag 20 is deployed, the airbag 20 is folded in a roll shape in the vertical direction.

  The airbag 20 folded in this way is attached to the roof side rail 1 and the front pillar 2 by the attachment member 3. The curtain airbag device 10 is covered with a front pillar garnish or a roof head lining (not shown).

  The curtain airbag device 10 includes an inflator 60 that supplies gas to the airbag 20. When the vehicle is collided from the side and an acceleration of a predetermined value or more is detected at the side of the vehicle body, gas is injected from the inflator 60 in response to a signal from the sensor. The airbag 20 is deployed by the gas ejected from the inflator 60, presses a front pillar garnish and a roof head lining (not shown) from the inside, and deploys from the clearance into the vehicle interior. The airbag 20 is deployed in a curtain shape between the side surface of the passenger compartment and the occupant.

  The configuration of the curtain airbag device 10 will be described in detail with reference to FIGS. 1 to 6. The airbag 20 is formed in a bag shape. In the present embodiment, the airbag 20 is formed into a bag shape by sewing the peripheral portions of the two first sheet members 21 and the second sheet member 22 (see FIG. 3). The first seat member 21 is on the vehicle exterior side in the vehicle width direction, and the second seat member 22 is located on the vehicle compartment side in the vehicle width direction.

  The airbag 20 includes a plurality of chambers 30 that are arranged side by side in the front-rear direction of the vehicle and are partitioned by a partition 50. The chamber 30 is a portion of the airbag 20 that is inflated with gas from the inflator 60. In this embodiment, the some chamber 30 is formed along with the front-back direction by providing the several partition part 50 in alignment with the height direction (Z direction) of a vehicle in the front-back direction of a vehicle.

  There is no limitation in particular in the structure of the partition part 50 which forms such a chamber 30. FIG. In this embodiment, the partition part 50 is made by stitching the two first sheet members 21 and the second sheet member 22 together.

  The airbag 20 has a set of two chambers 30 adjacent to each other among a plurality of chambers 30 arranged in parallel in the front-rear direction of the vehicle. The chamber 30 positioned on the vehicle front side of one set is referred to as a first chamber 31, and the chamber 30 positioned on the vehicle rear side of the first chamber 31 is referred to as a second chamber 32. The first chamber 31 and the second chamber 32 constituting this set are objects to which a tether 40 described later is attached. One tether 40 is attached to one set. Since the structures of the first chamber 31 and the second chamber 32 are the same as those of the other chambers 30, they are simply referred to as chambers 30 when they are not distinguished.

  Although the number of groups to which the tether 40 is attached is not limited, in the present embodiment, there are two groups, a group P and a group Q. Further, one chamber 30 is shared as the second chamber 32 of the set P and the first chamber 31 of the set Q. That is, the first chamber 31 of the set Q on the rear side among the set P and the set Q adjacent in the front and rear is shared as the second chamber 32 of the set P on the front side.

  A partition 50 that partitions one set of the first chamber 31 and the second chamber 32 is referred to as an intermediate partition. Here, the intermediate partition portion of the set P is a first intermediate partition portion 50P, and the intermediate partition portion of the set Q is a second intermediate partition portion 50Q. Since the structures of the first intermediate partition portion 50P and the second intermediate partition portion 50Q are the same as those of the other intermediate partition portions, they are simply referred to as the partition portion 50 when they are not distinguished.

  The tether 40 is a string-like member attached to one set. As will be described later, the tether 40 only needs to be formed of a material having such a strength that it can be bent by being pressed by the obstacle when an obstacle or the like collides with the vehicle. For example, a nylon tether can be used.

  In the present embodiment, the airbag 20 is provided with two tethers 40 corresponding to the two sets P and Q. The tether 40 provided in the set P is also referred to as a first tether 41, and the tether 40 provided in the set Q is also referred to as a second tether 42. When the first tether 41 and the second tether 42 are not distinguished from each other, they are simply referred to as a tether 40.

  As shown in FIG. 6, the first intermediate partition 50 </ b> P of the set P is provided with an insertion hole 53 that penetrates the airbag 20. The first tether 41 is inserted through the insertion hole 53.

  The first tether 41 is inserted through the insertion hole 53 and includes a first portion 41 a extending from the insertion hole 53 toward the front of the vehicle (right side in the figure). In other words, the first portion 41a is a portion of the first tether 41 that is disposed on the outer side of the airbag 20 with respect to the insertion hole 53 (first intermediate partition portion 50P).

  In addition, the first tether 41 includes a second portion 41b that is continuous with the first portion 41a and extends from the insertion hole 53 toward the rear of the vehicle (left side in the figure). In other words, the second portion 41b is a portion of the first tether 41 that is disposed closer to the compartment side of the airbag 20 than the insertion hole 53 (first intermediate partition portion 50P).

  The second tether 42 is the same as the first tether 41. That is, as shown in FIG. 4, the second tether 42 is inserted through an insertion hole (not shown; similar to FIG. 6) formed in the second intermediate partition 50 </ b> Q, and from the insertion hole. A first portion 42a extending toward the front of the vehicle (right side of the figure) is provided. The second tether 42 includes a second portion 42b that extends from the insertion hole toward the rear of the vehicle (the left side of the figure) continuously from the first portion 42a.

  The first portion 41a and the first portion 42a are portions extending forward of the vehicle from the first intermediate partition 50P and the second intermediate partition 50Q, respectively. This corresponds to the “first portion extending forward”. The second part 41b and the second part 42b are parts extending from the first intermediate partition part 50P and the second intermediate partition part 50Q to the rear of the vehicle, respectively. This corresponds to the “second portion extending rearward”.

  As shown in FIG. 4, the first portion 41 a of the first tether 41 is disposed on the vehicle outer surface side of the first chamber 31, and its end is fixed to the partition portion 50. The partition 50 partitions the front side of the first chamber 31 of the set P. In addition, the second portion 41 b of the first tether 41 is disposed on the vehicle compartment surface side of the second chamber 32, and its end is fixed to the partition portion 50. The partition 50 partitions the rear side of the vehicle in the second chamber 32 of the set P.

  As shown in FIG. 4, the first portion 42 a of the second tether 42 is disposed on the vehicle outer surface side of the first chamber 31, and its end is fixed to the partition portion 50. The partition 50 partitions the front side of the first chamber 31 of the set Q. The second portion 42 b of the second tether 42 is disposed on the vehicle compartment surface side of the second chamber 32, and its end is fixed to the partition portion 50. The partition 50 partitions the rear side of the vehicle in the second chamber 32 of the set Q.

  The means for fixing both ends of the first tether 41 and the second tether 42 to the partition 50 is not particularly limited, but here, the first portion 41a, the second portion 41b, the first portion 42a, and the second portion 42b. Each end portion is fixed to the partition portion 50 by sewing.

  As described above, the first tether 41 is fixed to the airbag 20. That is, as shown in FIGS. 3 to 6, the first tether 41 passes from the partition 50 on the front side of the first chamber 31 of the set P to the outer side of the airbag 20 and passes through the first intermediate partition 50P. The insertion hole 53 (see FIG. 6) is inserted. The first tether 41 passes from the insertion hole 53 to the compartment side of the airbag 20 and is fixed to the partition 50 on the rear side of the second chamber 32 of the set P.

  The second tether 42 is the same as the first tether 41. That is, as shown in FIG. 4, the second tether 42 passes from the partition 50 on the front side of the first chamber 31 of the set P to the outer side of the airbag 20 and passes through the insertion hole of the second intermediate partition 50Q. (Not shown) is inserted. The second tether 42 passes through the vehicle compartment side from the airbag 20 through the insertion hole, and is fixed to the partition 50 on the rear side of the second chamber 32 of the set Q.

  It can be assumed that an occupant with a small physique moves a seat forward, and an occupant with a large physique moves a seat backward and sits down. Therefore, it can be assumed that an occupant with a large physique is positioned on the rear side and the upper side of the vehicle with the head 120 when seated, than an occupant with a relatively small physique than the occupant.

  In the present embodiment, the first tether 41 is disposed at a relatively low position assuming the head of an occupant having a small physique, and the second tether 42 is disposed at a relatively high position assuming the head of an occupant having a large physique. ing.

  Specifically, as shown in FIGS. 2 and 7, the first tether 41 is disposed at a position lower than the second tether 42 in the vehicle height direction. Further, the first tether 41 is disposed in front of the second tether 42 in the mounting position in the front-rear direction of the vehicle.

  In the first tether 41, the vicinity of the first intermediate partition 50 </ b> P of the set P located on the front side of the set Q is disposed at a position assumed to face the head 120. The first tether 41 is arranged according to the height of the occupant's head 120 having a relatively small physique.

  Further, as shown in FIGS. 2 and 9, the second tether 42 is disposed above the first tether 41 in the mounting position in the vehicle height direction. In addition, the second tether 42 is disposed behind the first tether 41 in the mounting position in the vehicle front-rear direction.

  In the second tether 42, the vicinity of the second intermediate partition 50 </ b> Q of the set Q located on the rear side of the set P is disposed at a position assumed to face the head 120. The second tether 42 is arranged according to the height of the occupant's head 120 having a relatively large physique.

  By arranging the first tether 41 and the second tether 42 in this way, the first tether 41 and the second tether 42 can be arranged according to the physique of the passenger sitting on the seat.

  An operation when a vehicle on which the curtain airbag device 10 having the above-described configuration is mounted will be described.

  First, the operation of the curtain airbag device 10 when a passenger with a relatively small physique is seated on the seat will be described with reference to FIG.

  When the columnar pole 130 side impacts on the vehicle (pole side collision), the curtain airbag device 10 supplies gas from the inflator 60 and deploys the airbag 20. At this time, the first chamber 31 of the set P of the airbag 20 directly receives the pole 130 and absorbs the impact.

  The first portion 41 a disposed on the outer surface of the first chamber 31 is pressed by the pole 130 and bends toward the inside of the first chamber 31. When the first portion 41a is bent, the second portion 41b is pulled forward by the first portion 41a. Thereby, the partition part 50 pulled by the 2nd part 41b rotates (displaces) toward the compartment side centering | focusing on the 1st intermediate | middle partition part 50P.

  Since the partition 50 on the rear side of the second chamber 32 rotates (displaces) toward the passenger compartment side, the second chamber 32 approaches the occupant's head 120 from the rear, and between the first chamber 31 and the second chamber 32. The head 120 can be sandwiched.

  As described above, the first tether 41 is bent toward the passenger compartment side due to a side collision, whereby the second chamber 32 can be rotated toward the passenger compartment side, and the head 120 is moved between the first chamber 31 and the second chamber 32. It can be protected by being pinched. Thereby, rotation of a crew member's head 120 can be controlled.

  The operation of the curtain airbag device 10 when a passenger with a relatively large physique is seated on the seat will be described with reference to FIG.

  When the columnar pole 130 side impacts on the vehicle, the curtain airbag device 10 supplies gas from the inflator 60 and deploys the airbag 20. At this time, the first chamber 31 of the set Q of airbags 20 directly receives the pole 130 and absorbs the impact.

  The first portion 42 a disposed on the outer surface of the first chamber 31 is pressed by the pole 130 and bends toward the inside of the first chamber 31. When the first portion 42a is bent, the second portion 42b is pulled forward by the first portion 42a. Thereby, the partition part 50 pulled by the 2nd part 42b rotates (displaces) toward the compartment side centering | focusing on the 2nd intermediate partition part 50Q.

  Since the partition 50 on the rear side of the second chamber 32 rotates (displaces) toward the passenger compartment side, the second chamber 32 approaches the occupant's head 120 from the rear, and between the first chamber 31 and the second chamber 32. The head 120 can be sandwiched.

  As described above, the second tether 42 is bent toward the vehicle compartment side due to a side collision, whereby the second chamber 32 can be rotated (displaced) toward the vehicle compartment side, and the head 120 is moved to the first chamber 31 and the second chamber. 32, and can be protected. Thereby, it can suppress that a passenger | crew's head 120 rotates.

  As described above, the curtain airbag device 10 of the present embodiment has the first portion disposed on the vehicle exterior side of the first chamber 31 constituting the set, and the vehicle compartment side of the second chamber 32. The airbag 20 is provided with a tether 40 having a second portion arranged. With such a configuration, the second portion pulls the partition 50 on the rear side of the second chamber 32 forward by the bending deformation of the first portion at the time of a side collision, and the second chamber 32 moves toward the vehicle compartment side. It can be rotated (displaced). Thus, the front of the passenger's head 120 can be protected by being sandwiched between the first chamber 31 and the rear with the second chamber 32. As a result, rotation of the head 120 can be suppressed, and the occupant's head can be more appropriately protected. Accordingly, it is possible to improve the protection performance for the head of the occupant.

  In the curtain airbag device 10 of the present embodiment, the end portion of the first portion 41 a of the tether 40 and the end portion of the first portion 42 a are fixed to the partition portion 50 that partitions the front of the first chamber 31. This makes it possible to bend the first portion 41a and the first portion 42a of the tether 40 regardless of which portion of the first chamber 31 collides with the pole 130, and more reliably the second portion 41b and the second portion 42b. The second chamber 32 can be rotated toward the passenger compartment side by pulling the. Note that the first portion 41 a and the first portion 42 a do not need to be fixed to the partition portion 50 as in the present embodiment, and may be fixed to the first chamber 31.

  In the curtain airbag device 10 of the present embodiment, the end portion of the second portion 41 b of the tether 40 and the end portion of the second portion 42 b are fixed to the partition portion 50 that partitions the rear of the second chamber 32. Thereby, the 2nd chamber 32 can be more reliably rotated to the compartment side.

  In addition, the 2nd part 41b and the 2nd part 42b do not need to be fixed to the partition part 50 like this embodiment, and may be fixed to the 2nd chamber 32. FIG.

  The curtain airbag device 10 of the present embodiment has a plurality of sets each including a first chamber 31 and a second chamber 32, and a tether 40 is provided for each set. Thereby, it can protect so that head 120 may not rotate appropriately according to a crew member's physique.

  In the curtain airbag device 10 of the present embodiment, one chamber 30 is shared as the second chamber 32 of the set P and the first chamber 31 of the set Q. Thereby, a plurality of positions that can be protected by sandwiching the head 120 between the first chamber 31 and the second chamber 32 can be set at narrower intervals.

  Of course, a plurality of sets need not share one chamber 30. For example, in the case of the airbag 20 having the configuration shown in FIG. 2, the front two of the four chambers 30 are set as one set, the rear two are set as one set, and the single chamber 30 is not shared. Also good.

  In the curtain airbag device 10 of the present embodiment, the second tether 42 disposed on the rear side of the vehicle is positioned above the first tether 41 disposed on the front side of the vehicle. This protects the occupant's head 120 with a small physique so as to be sandwiched by the chamber 30 of the set P having the first tether 41, and the occupant's head 120 of the large physique with the chamber 30 of the set Q having the second tether 42 Can be protected. Thus, it can protect so that rotation of head 120 may be suppressed appropriately according to a crew member's physique.

  In the curtain airbag device 10 of the present embodiment, the tether 40 is disposed so as to face the occupant's head 120. Thereby, the 1st chamber 31 and the 2nd chamber 32 can be moved so that the neighborhood of a head may be pinched more certainly.

<Other embodiments>
As mentioned above, although one embodiment of the present invention has been described, of course, the present invention is not limited to the above-described embodiment, and addition, omission, replacement, etc., of a configuration is possible without departing from the spirit of the present invention. And other changes are possible.

  In Embodiment 1, although the airbag 20 was provided along the roof side rail 1 and the front pillar 2, there is no limitation in particular in the location to attach. Moreover, although the airbag 20 was provided in the passenger seat side, it is not limited to this, You may arrange | position at the driver seat side.

  Although one tether 40 is provided for one set, the present invention is not limited to this, and a plurality of tethers 40 may be provided for one set. Moreover, although the tether 40 is provided on the front seat side of the airbag 20, the tether 40 is not limited to this and may be provided on the rear seat side. The location where the tether 40 is fixed to the partition 50 is the surface thereof, but is not limited thereto. For example, as shown in FIG. 5, the first portion 41 a of the first tether 41 is fixed to the vehicle outer surface of the partition portion 50, but may be fixed to the vehicle interior side surface that is the opposite surface side. Good. That is, a slit may be provided in the partition part 50, and it may be fixed to the surface of the partition part 50 on the vehicle compartment side through the slit.

  Although the tether 40 is inserted through the insertion hole 53 provided in the partition portion 50, the tether 40 does not need to be an insertion hole. For example, a notch may be provided from the lower end of the airbag 20 and the tether 40 may be passed through the notch. That is, the lower half of the partition 50 shown in FIG. 2 is cut away. Even in this case, in the top view as shown in FIG. 4, the portion of the tether 40 that is disposed from the partition portion 50 to the outer surface of the first chamber 31 becomes the first portion 41. A portion disposed on the vehicle compartment side surface of the second chamber 32 becomes the second portion 42.

P, Q group 10 curtain airbag device 20 airbag 30 chamber 31 first chamber 32 second chamber 40 tether 41 first tether 41a, 42a first portion 41b, 42b second portion 42 second tether 50 partition 50P first Intermediate partition 50Q Second intermediate partition 60 Inflator 100 Curtain airbag device

Claims (7)

A curtain airbag device provided with an airbag that is arranged along the front-rear direction of the vehicle above the side surface of the passenger compartment and that is deployed between the passenger and the side surface of the passenger compartment
The airbag is
A plurality of chambers arranged in parallel in the front-rear direction of the vehicle and partitioned by a partition,
Of the plurality of chambers, a pair of two chambers adjacent to each other forms a set, and includes a first chamber located on the vehicle front side and a second chamber located on the vehicle rear side of the first chamber. ,
A first portion extending slidably through an intermediate partition portion, which is the partition portion between the first chamber and the second chamber, and extending forward from the intermediate partition portion; and the first A tether having a second part extending continuously from the intermediate partition to the rear of the vehicle,
The first portion of the tether is disposed on the vehicle outer surface side of the first chamber and is fixed to the airbag.
The curtain airbag device according to claim 2, wherein the second portion of the tether is disposed on a vehicle compartment surface side of the second chamber and is fixed to the airbag. In the curtain airbag device according to claim 1,
The curtain airbag device according to claim 1, wherein the first portion of the tether is fixed to the partition that partitions the front of the first chamber. In the curtain airbag device according to claim 1 or 2,
The curtain airbag device according to claim 2, wherein the second portion of the tether is fixed to the partition that partitions the rear of the second chamber. In the curtain airbag device according to any one of claims 1 to 3,
A plurality of the sets including the first chamber and the second chamber;
A curtain airbag device comprising the tether for each set. In the curtain airbag device according to claim 4,
The curtain airbag device characterized in that the first chamber of the set on the rear side of the set adjacent to each other in front and rear is shared as the second chamber of the set on the front side. In the curtain airbag device according to claim 4 or 5,
The curtain airbag device, wherein the tether disposed on the rear side of the vehicle is positioned above the tether disposed on the front side of the vehicle. In the curtain airbag device according to any one of claims 1 to 6,
The tether is disposed so as to face the head of an occupant.

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