KR102473425B1 - Airbag apparatus - Google Patents

Abstract

It is an object to provide an airbag device capable of reliably inflating and deploying. An airbag device that is elongated on one side of a seat of a vehicle in a state in which molding parts (R1, R2) are formed by bending both ends facing each other in the longitudinal direction in the horizontal direction when a seat-shaped cushion is inflated and deployed, wherein the both ends are formed. A first holding member 43 holding the first molded portion R1 at one end of the middle at least until the start of inflation and deployment, and holding the second molded portion R2 at the other end at least until the start of inflation and deployment. A second holding member 44 is provided.

Description

Airbag device {AIRBAG APPARATUS}

The present invention relates to an airbag device.

In recent years, airbag devices have been widely spread. An airbag device is a safety device that operates in an emergency such as a vehicle collision, and inflates and deploys an airbag with gas pressure to receive and protect a passenger.

Patent Document 1 discloses a vehicle seat unit in which an airbag is installed inside a side portion of a vehicle seat in a state where it is housed in a flexible cover, and the airbag pierces the cover to inflate and deploy toward the front side of the vehicle seat upon vehicle collision.

[Prior art literature]

[Patent Literature]

Patent Document 1: Specification of US Patent Application Publication No. 2012/0175924

On the other hand, there are various types of airbag devices depending on the application. For example, there are those provided with cushions (airbags) having a plurality of parts that expand and deploy in different directions. In the case of such an airbag device, it is necessary to store the parts inside the vehicle seat in a separately folded state so that the parts do not get entangled during inflation and deployment. However, when each part does not maintain a folded state or the arrangement of each part is not maintained, a problem of entanglement of each part may also occur during expansion and deployment.

However, in the vehicle seat unit of Patent Literature 1, the case where the cushion has a plurality of parts that expand and deploy in different directions is not considered, and for the plurality of parts, the folded state is maintained until the time of inflation and deployment, and the arrangement is preserved. can't

The present invention has been made in view of such a situation, and its object is an airbag device mounted in a state in which a plurality of molding parts formed by bending a cushion a plurality of times are formed, and the shape of each molding part is maintained without hindering inflation and deployment. It is to provide an airbag device capable of maintaining the arrangement of each molding part.

An airbag device according to the present invention is an airbag device mounted on one side of a seat of a vehicle in a state in which a molded portion is formed in which opposite ends in the longitudinal direction in the horizontal direction are bent a plurality of times, respectively, when a sheet-like airbag is inflated and deployed. , a first holding member for holding the first molded part at one end of the both ends at least until the start of inflation and deployment, and the second molded part at the other end until at least the start of inflation and deployment. It is characterized by providing a second holding member for holding.

According to the present invention, in an airbag device equipped with a plurality of molded parts formed by bending a cushion a plurality of times, the shape of each molded part can be maintained without obstructing inflation and deployment, and the arrangement of each molded part is preserved. An airbag device capable of doing this is provided.

1 is a partial perspective view schematically showing the inside of a vehicle equipped with an airbag device according to Embodiment 1;
Fig. 2 is a plan view schematically showing the inside of a vehicle equipped with an airbag device according to Embodiment 1;
FIG. 3 is a cross-sectional view of the airbag device along the line III-III of FIG. 1;
4 is a perspective view showing an example of a cushion according to Embodiment 1;
5 is an explanatory view showing a method of folding the cushion according to Embodiment 1;
6 is an explanatory view showing a method of folding the cushion according to the first embodiment.
Fig. 7 is a perspective view schematically showing the cushion in the state of Fig. 6E.
FIG. 8 is a cross-sectional view along line VIII-VIII of FIG. 7 .
Fig. 9 is an explanatory diagram showing the process of inflating and deploying the cushion according to the first embodiment.
Fig. 10 is a cross-sectional view schematically showing a state in which the cushion of the airbag device according to Embodiment 2 is stored.
Fig. 11 is a cross-sectional view schematically showing a state in which the cushion of the airbag device according to Embodiment 3 is accommodated.
Fig. 12 is a cross-sectional view schematically showing a state in which the cushion of the airbag device according to the fourth embodiment is accommodated.
Fig. 13 is a cross-sectional view schematically showing a state in which the cushion of the airbag device according to the fifth embodiment is accommodated.

Hereinafter, an airbag device according to an embodiment of the present invention will be described in detail based on the drawings. An airbag device according to an embodiment of the present invention is mounted on a vehicle seat.

In the following description, 'top' of the vehicle is a direction toward the ceiling of the vehicle, 'bottom' is a direction toward the floor of the vehicle, and 'up and down direction' refers to the ceiling and is the direction the floor faces. In addition, the forward direction of the vehicle is set as a 'front' direction, and the backward direction of the vehicle is set as a 'rear' direction. Furthermore, the width direction of the vehicle is a direction crossing the forward or backward direction of the vehicle, and is a direction orthogonal to the 'front and rear' direction.

(Embodiment 1)

Fig. 1 is a partial perspective view schematically showing the inside of a vehicle equipped with an airbag device 4 according to Embodiment 1. The airbag device 4 of this embodiment is a so-called side airbag device. Fig. 2 is a plan view schematically showing the inside of a vehicle equipped with the airbag device 4 according to the first embodiment. 1 and 2 show a driver's seat 2 and a passenger's seat 3 installed on a floor surface 10 of a cabin 1, and a seat belt 5. As shown in FIG. The driver's seat 2 has a seat portion 21 and a backrest 22 raised upward from the rear side of the seat portion 21 .

As shown in FIG. 2 , the airbag device 4 according to Embodiment 1 is disposed in a side portion of a backrest 22 of a driver's seat 2 installed in a cabin 1 of a vehicle 100 on the passenger seat 3 side. are doing

FIG. 3 is a cross-sectional view of the airbag device 4 along line III-III in FIG. 1 . The airbag device 4 includes a cushion 41 (airbag) and an inflator 42 accommodated in a storage space 40 provided on the side of the backrest 22 on the passenger seat 3 side.

The cushion 41 is a woven bag body reinforced by weaving, for example, high-strength fibers such as nylon fibers, and is stored in the storage space 40 after being folded into a rolling shape or bellows. The shape and folding method of the cushion 41 will be described later.

The inflator 42 is fixed to the skeleton frame 23 of the backrest 22 by means of stud bolts 421 (fixing members). The skeleton frame 23 is an example of a structure installed in the vehicle compartment 1. The inflator 42 is installed inside the cushion 41 and injects gas for inflation and deployment into the cushion 41 .

The skeleton frame 23 is covered with a cover, and a buffer material C is interposed between the skeleton frame 23 and the cover. That is, the skeleton frame 23 is covered with the cushioning material C.

The storage space 40 is a concave space formed by the cushioning material C and the skeleton frame 23 in the side portion of the backrest 22, and the front side is open. That is, the opening of the storage space 40 faces the passenger seat 3 side and is covered with the plate-shaped cover C1 so as to form one side with the driver's seat 2 side.

The plate-shaped cover C1 is made of the same material as the cushioning material C, for example. The cushion 41 is inflated by the injection gas action from the inflator 42 upon collision of the vehicle 100, and breaks the plate-shaped cover C1 to spread laterally. The plate-shaped cover C1 may be made of a resin whose strength is lower than the expansive force of the cushion 41 at the time of inflating and deploying.

4 is a perspective view showing an example of the cushion 41 according to the first embodiment. 4 shows the cushion 41 when inflated. The direction shown in FIG. 4 represents the direction in the vehicle 100 . The cushion 41 has a convex shape having a horizontal portion 41d extending in the horizontal direction of the vehicle 100 and a protrusion 41e extending upward from the center of the horizontal portion 41d toward the vehicle 100. make up

The cushion 41 has a gusset portion so that the first panel 481 and the second panel 482 facing each other have a thickness in the direction in which the first panel 481 and the second panel 482 are opposed to each other. intervened and combined. The second panel 482 has a shape in which the first panel 481 is inverted. Hereinafter, the first panel 481 and the second panel 482 are also referred to as a panel 48 .

The gusset portion includes a first gusset portion 441 coupling the upper portions between the first panel 481 and the second panel 482 and a second gusset portion coupling the lower portions between the first and second panels 481 and 482. It includes a seat 442. The first gusset portion 441 and the second gusset portion 442 have a long circular shape.

A rectifying sheet 49 is installed on the inner surface of the first panel 481 . Further, between the first panel 481 and the rectifying sheet 49, a cylindrical (cylindrical) inflator 42 is disposed. The flow of the gas injected from the inflator 42 is adjusted by the rectifying sheet 49 . The rectifying sheet 49 will be described later.

In addition, in the first panel 481, a rectangular portion extending in the front-back direction constitutes the horizontal portion 41d (see Fig. 4). The inflator 42 is installed close to the front end of both ends facing forward and backward in this rectangular portion. The inflator 42 is installed so that its longitudinal direction is parallel to a direction (vertical direction) orthogonal to the opposite direction of the both ends.

The first panel 481 and the second panel 482 are each combined with short sides of the rectangular portion. Further, in the first panel 481 and the second panel 482 , edges of protrusions on one long side of the rectangular portion are coupled to the first gusset portion 441 . In the first panel 481 and the second panel 482, the other long side of the rectangular portion is coupled to the second gusset portion 442.

Accordingly, the first panel 481, the second panel 482, the first gusset portion 441, and the second gusset portion 442 are coupled in a bag shape. The first panel 481 , the second panel 482 , the first gusset portion 441 , and the second gusset portion 442 may be joined using any method such as sealing, bonding, or welding.

In the first panel 481, two through holes 412 through which stud bolts 421 are inserted are formed side by side in a vertical direction. In addition, FIG. 4 shows the case where there are two through holes 412, but the number of through holes 412 may be one or three or more.

The inflator 42 operates when the vehicle 100 collides or the like, and injects gas into the cushion 41 . The cushion 41 is inflated at once by the injection gas action from the inflator 42 . The expansion pressure of the cushion 41 acts on the plate-shaped cover C1, and as described above, the cushion 41 breaks the plate-shaped cover C1 and expands and deploys to the outside of the storage space 40. Note that, hereinafter, expansion and development are simply referred to as deployment.

The rectifying sheet 49 is rectangular, and is fixed to the first panel 481 so that its longitudinal direction is parallel to the longitudinal direction of the rectangular portion of the first panel 481 . The rectifying sheet 49 is fixed to the first panel 481 using an arbitrary fixing means such as suture or adhesive bonding. An inflator 42 is disposed between the first panel 481 and the rectifying sheet 49 .

In the rectifying sheet 49, only the edges of the two long sides are fixed to the first panel 481. That is, the two short sides of the rectifying seat 49 are open over the entire length, and the two long sides are closed over the entire length, and the protruding portion 41e of the cushion 41 and the inflator 42 are closed. .

The broken line arrows in FIG. 4 indicate the flow of gas from the inflator 42 . The gas injected from the inflator 42 flows out from the short side of the rectifying seat 49 and fills the entire inside of the cushion 41 .

In the following description, for convenience of explanation, it is assumed that the cushion 41 is conceptually composed of three parts. With the position where the inflator 42 is disposed as a boundary, the portion from the inflator 42 to one end of the front side is defined as the first portion 41a. The part from the inflator 42 to the other end of the rear side is divided into two parts, the part close to the other end is made the third part 41c, and the part close to the first part 41a is the second part. Let it be 2 parts 41b. That is, the second part 41b is interposed between the first part 41a and the third part 41c. The boundary between the first part 41a and the second part 41b and the boundary between the second part 41b and the third part 41c are not strict.

5 and 6 are explanatory views showing how to fold the cushion 41 according to the first embodiment. 5 shows a method of folding the cushion 41 into a rectangular shape. As shown in Fig. 5A, the protruding portion 41e of the cushion 41 is folded inside the cushion 41. That is, the protrusion 41e is pushed between the first panel 481 and the second panel 482 . Alternatively, you may fold it in the front-back direction of a drawing. The bottom portion of the cushion 41 is also folded between the first panel 481 and the second panel 482 in the same way as the protruding portion 41e. Thereby, the cushion 41 changes from the state of FIG. 5A to the state of FIG. 5B.

6 shows a folding method for accommodating the cushion 41 in the storage space 40 . Fig. 6 is a view of the folded cushion 41 as shown in Fig. 5B, viewed from the direction of the white arrow in Fig. 5B. For convenience of description, illustration of the rectifying sheet 49 is omitted in FIG. 6 .

In order to accommodate the cushion 41 in the storage space 40, when the cushion 41 is inflated and deployed, the one end of the first portion 41a and the third portion 41c corresponding in the longitudinal direction in the horizontal direction are separated. Fold the other end by bending it several times. 6A and 5B, the cushion 41 before folding has a flat sheet shape, and only the portion where the inflator 42 is installed protrudes in the thickness direction. One end of the first portion 41a and the other end of the third portion 41c are bent and folded into, for example, a rolling shape or a bellows shape. In the following, the case of bending and folding in a rolling shape will be described as an example.

First, as shown in FIG. 6B, one end of the first portion 41a is bent toward the inflator 42 a plurality of times and folded into a rolling shape. For example, the bending direction is clockwise as seen from the white arrow in FIG. 5B. Hereinafter, such a folding method is referred to as 'clockwise rolling'. Thereby, the rolling-shaped 1st molding part R1 (1st molding part) is formed in the 1st part 41a (refer FIG. 6B).

Next, as shown in FIG. 6C, the second part 41b and the third part 41c are folded back to the first part 41a (first molding part R1) side with respect to the inflator 42. At this time, the first molding part R1 of the first part 41a is covered by the second part 41b.

Then, as shown in Fig. 6D, the other end of the third portion 41c is bent toward the inflator 42 a plurality of times and folded into a rolling shape. The direction of bending is counterclockwise. Hereinafter, such a folding method is referred to as 'counterclockwise rolling'. As a result, a rolling-shaped second molding part R2 (second molding part) is formed in the third part 41c (see Fig. 6D), and the first molding part R1 of the first part 41a is formed in the third part. It becomes a state sandwiched between the 2nd molding part R2 of (41c) and the inflator 42. That is, in the cushion 41 before inflating and deploying, the inflator 42, the first molding part R1 and the second molding part R2 are arranged in a line, and the first molding part R1 includes the inflator 42 and the second molding part ( R2) is interposed between them.

Then, as shown in FIGS. 6E and 6F, a first holding member 43 is provided to hold the first molded part R1 of the first part 41a at least until the start of inflation and deployment, and the first molded part The second molding part R2 is provided by providing a second holding member 44 for holding R1 and holding the second molding part R2 of the third part 41c at least until the start of expansion and development. hold and support The first holding member 43 and the second holding member 44 are shaped like bands having a predetermined width, and are made of non-woven fabric, the same kind as the cushion 41 or the same fabric.

The first holding member 43 has a through hole 432 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 432 of the first holding member 43, one end of the first holding member 43 is engaged with the stud bolt 421. The first holding member 43 surrounds the first molded portion R1 from the side of the first panel 481, and is releasable when the other end is inflated and deployed between the inflator 42 and the first molded portion R1. It is temporarily coupled to the second panel 482 (see Fig. 6E). For example, the other end of the first holding member 43 is temporarily fixed to the second panel 482 using an adhesive, and is sewn to be easily cut or released. Below, the case where the other end of the 1st holding|maintenance member 43 is sewn to the 2nd panel 482 is demonstrated as an example (refer sewing line S1 of FIG. 8). In this way, since the first holding member 43 surrounds the first molded portion R1, the shape and position of the first molded portion R1 are maintained until expansion and development.

The second holding member 44 has a through hole 444 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. By inserting the stud bolt 421 into the through hole 444 of the second holding member 44, one end of the second holding member 44 is engaged with the stud bolt 421. The second holding member 44 covers the inflator 42 and the first molding part R1 from the side of the first panel 481 and also surrounds the second molding part R2. The other end of the second holding member 44 is temporarily engaged to the first holding member 43 so as to be releasable during expansion and deployment (see Fig. 6F). For example, the other end of the second holding member 44 is temporarily fixed to the first holding member 43 using an adhesive, and is sewn to be easily cut or released. In this way, since the second holding member 44 surrounds the second molded part R2, the shape and position of the second molded part R2 are maintained until expansion and development.

In this way, since the first molding part R1 is held by the first holding member 43 and the second molding part R2 is held by the second holding member 44 until the expansion and development, the first molding part R2 is held. It is possible to prevent in advance that trouble occurs during expansion and development, such as entanglement of the portion 41a and the third portion 41c.

Fig. 7 is a perspective view schematically showing the cushion 41 in the state of Fig. 6E, and Fig. 8 is a cross-sectional view taken along line VIII-VIII in Fig. 7 .

The other end of the 2nd holding member 44 is sewn to the 1st holding member 43, and the seam line S2 is formed in the other end of the 2nd holding member 44.

The first holding member 43 has a first weak portion 431 formed on the side of the driver's seat 2 (backrest 22), that is, at a portion facing the side of the backrest 22. The first weak portion 431 extends in the width direction of the first holding member 43 . The first weak portion 431 makes the first holding member 43 easy to tear, and when the first portion 41a (first shaped portion R1) expands and unfolds, the first holding member 43 breaks. It can be expanded and deployed easily and reliably without obstruction.

In addition, the second holding member 44 is a second weak part ( 443) is formed. The second weak portion 443 extends in the width direction of the second holding member 44 . The second weak portion 443 makes the second holding member 44 easy to tear, and when the second portion 41b and the third portion 41c (second shaped portion R2) are expanded and deployed, the second holding member 44 is easily torn. The holding member 44 does not interfere, and can be easily and reliably expanded and deployed.

In addition, the first weak portion 431 is formed at a position corresponding to the direction in which the first portion 41a is to be deployed (see FIG. 9 ), and the second weak portion 443 is formed in the direction in which the third portion 41c is to be deployed. It is formed at a position corresponding to the direction to be performed (see FIG. 9). That is, in the first holding member 43, the position of the first fragile portion 431 is first torn open, and in the second holding member 44, the position of the second weak portion 443 is first torn open. Thus, the deployment of the first part 41a and the third part 41c is guided.

In addition. In this embodiment, a case where the first fragile portion 431 and the second fragile portion 443 are cut will be described as an example, but it is not limited thereto. For example, the first weak portion 431 and the second weak portion 443 may be notches, cuts, etc. formed on the edge portion of the first holding member 43 or the second holding member 44, and may be formed on the inner side of the edge. It may be a slit formed in the width direction, a cutout, a sewing machine stitch, or the like.

As shown in FIGS. 7 and 8 , the cushion 41 folded in a rolling shape is accommodated in the storage space 40 so that the third portion 41c is at the front of the vehicle and the inflator 42 is at the rear of the vehicle, as shown in FIG. 3 . do. That is, the third portion 41c (second molding portion R2) is housed closer to the front side of the vehicle than the first portion 41a (first molding portion R1). As the inflator 42 is fixed to the skeleton frame 23 by stud bolts 421 , the cushion 41 is mounted in the storage space 40 . Thereafter, the cushion 41 and the storage space 40 are covered with the plate-shaped cover C1.

Fig. 9 is an explanatory diagram showing the process of inflating and deploying the cushion 41 according to the first embodiment. 9 : is the figure seen from the upper side of the compartment 1. As shown in FIG. In FIG. 9, the display of the shock absorber C and the plate-shaped cover C1 is abbreviate|omitted for convenience.

9A shows a state before deployment. Fig. 9B shows the state of the cushion 41 during deployment. When deployment starts, the first fragile portion 431 of the first holding member 43 is torn in the first portion 41a, and the other end of the first holding member 43 and the second panel 482 are torn. The seam (S1) of the hakama is cut. Further, since the first molding portion R1 rolls in a clockwise direction when viewed from above the cabin 1, it is deployed toward the driver's seat 2 side. At this time, the first part 41a pushes the third part 41c forward of the front passenger seat 3 .

Further, as described above, the first part 41a (first molding part R1) is interposed between the third part 41c (second molding part R2) and the inflator 42, and the inflator 42 is provided near one end of the first portion 41a. Accordingly, when the deployment starts, the first portion 41a expands before the third portion 41c, and the third portion 41c can be pushed toward the front of the vehicle.

The action of the first part 41a in this way directs the deploying third part 41c toward the passenger seat 3.

Furthermore, when deployment starts, the second fragile portion 443 of the second holding member 44 is torn in the third portion 41c, and the other end of the second holding member 44 and the first holding member ( The seam (S2) with 43) is cut off. In addition, since the second molding part R2 rolls counterclockwise when viewed from the top of the cabin 1, the third part 41c tilts in the direction of the passenger seat 3 in accordance with the action of the first part 41a described above. unfold while

In addition, the second portion 41b is deployed while tilting in the direction of the passenger seat 3, that is, in the left direction. On the other hand, since the first molding portion R1 rolls clockwise, it unfolds while tilting towards the center of the driver's seat 2 (backrest 22) as described above. Therefore, the state of the cushion 41 becomes substantially V-shaped as shown in FIG. 9B.

Fig. 9C shows a state where the cushion 41 is completely inflated and deployed. As shown in FIG. 9C, in the cushion 41 in the inflated and deployed state, the third portion 41c is placed on the passenger seat 3. Therefore, in the event of an accident such as a vehicle collision, it is possible to suppress the occupant seated in the driver's seat 2 from moving to the front passenger's seat 3 side.

Further, as described above, the gas injected from the inflator 42 in the process of deploying the cushion 41 is regulated by the rectifying seat 49, and the two short sides of the rectifying seat 49, that is, the vehicle ( 100) flows in the forward and backward directions. That is, directing the gas from the inflator 42 to the projection 41e of the cushion 41 is restricted by the rectifying seat 49 .

Therefore, the fullness (deployment) of the protruding portion 41e is slightly delayed compared to the expansion in the direction of the passenger seat 3. Therefore, even if the passenger seated in the front passenger seat 3 is in an out of position (OOP), it is possible to prevent the passenger's head from being injured by strong interference with the cushion 41 during deployment. . Thus, it is possible to provide the airbag device 4 that shows good results in a so-called OOP test that evaluates the degree of protection of a passenger in an irregular sitting posture.

In addition, the horizontal portion 41d of the cushion 41 is deployed at a higher speed in the horizontal direction of the vehicle 100 than the protruding portion 41e. Accordingly, the portion from the abdomen to the chest of the occupant seated in the front passenger seat 3 can be quickly restrained and protected.

In the above, the case where the cushion 41 is accommodated in a state of having two molding parts, the first molding part R1 and the second molding part R2, has been described as an example, but it is not limited to this, so as to have three or more molding parts. You can do it.

(Embodiment 2)

Fig. 10 is a transverse cross-sectional view schematically showing a stored state of the cushion 41 of the airbag device 4 according to the second embodiment. 10 shows a state in which the cushion 41 is accommodated in the storage space 40, and only the cushion 41, the inflator 42, and the stud bolt 421 are shown for convenience.

The 1st holding member 43 and the 2nd holding member 44 are band shape similarly to Embodiment 1.

The first holding member 43 has a through hole 432 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 432 of the first holding member 43, one end of the first holding member 43 is engaged with the stud bolt 421. The first holding member 43 surrounds the first molded part R1 from the side of the first panel 481, and the second end is releasably released between the inflator 42 and the first molded part R1 during expansion and deployment. Temporarily coupled to the panel 482. For example, the other end of the 1st holding member 43 is sewn to the 2nd panel 482, and the seam line S1 is formed in the other end of the 1st holding member 43. In this way, since the first holding member 43 surrounds the first molded portion R1, the shape and position of the first molded portion R1 are maintained until expansion and development.

The second holding member 44 has a through hole 444 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 444 of the second holding member 44, one end of the second holding member 44 is engaged with the stud bolt 421. The 2nd holding member 44 covers the 1st part 41a (1st molding part R1) from the outside of the 1st holding member 43, and further protects the 2nd molding part R2 and the inflator 42. surround The other end of the second holding member 44 is temporarily engaged to the first panel 481 near the inflator 42 so as to be releasable during inflation and deployment. For example, the other end of the 2nd holding member 44 is sewn to the 1st panel 481, and the seam S2 is formed in the other end of the 2nd holding member 44. In this way, since the second holding member 44 surrounds the second molded part R2, the shape and position of the second molded part R2 are maintained until expansion and development.

Thus, since the 1st molding part R1 is held by the 1st holding member 43, and the 2nd molding part R2 is held by the 2nd holding member 44, until expansion and development, the 1st It is possible to prevent in advance that the first part 41a and the third part 41c are entangled, and the occurrence of trouble during expansion and development.

In the first holding member 43, a first weak portion 431 is formed on the side of the driver's seat 2 (backrest 22). Like the first embodiment, the first weak portion 431 extends in the width direction of the first holding member 43 . The first weak portion 431 makes the first holding member 43 easy to tear, and prevents the first holding member 43 from expanding and deploying the first portion 41a (first shaped portion R1). It does not become, and it can expand and deploy easily and reliably.

In addition, the second holding member 44 is a second weak part ( 443) is formed. Like the first embodiment, the second weak portion 443 extends in the width direction of the second holding member 44 . The second weak portion 443 makes the second holding member 44 easy to tear, and the second retaining member 44 is inflated and deployed when the second portion 41b and the third portion 41c (second shaped portion R2) are expanded. The support member 44 does not interfere and can be easily and reliably inflated and deployed.

Furthermore, the first weak part 431 is formed at a position corresponding to the direction in which the first part 41a is to be deployed, and the second weak part 443 is formed in a position corresponding to the direction in which the third part 41c is to be developed. is formed in That is, in the first holding member 43, the position of the first fragile portion 431 is previously torn open, and in the second holding member 44, the position of the second fragile portion 443 is previously torn open. Thus, the deployment of the first part 41a and the third part 41c is guided.

As shown in FIG. 10 , the cushion 41 folded into a rolling shape is accommodated in the storage space 40 so that the third portion 41c is at the front of the vehicle and the inflator 42 is at the rear of the vehicle as shown in FIG. 3 . As the inflator 42 is fixed to the skeleton frame 23 by stud bolts 421 , the cushion 41 is mounted in the storage space 40 .

About the same part as Embodiment 1, the same code|symbol is attached|subjected and detailed description is abbreviate|omitted.

(Embodiment 3)

Fig. 11 is a cross-sectional view schematically showing a stored state of the cushion 41 of the airbag device 4 according to the third embodiment. 11 shows a state in which the cushion 41 is accommodated in the storage space 40, and only the cushion 41, the inflator 42, and the stud bolt 421 are shown for convenience.

The 1st holding member 43 and the 2nd holding member 44 are band shape similarly to Embodiment 1.

The first holding member 43 has a through hole 432 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 432 of the first holding member 43, one end of the first holding member 43 is engaged with the stud bolt 421. The first holding member 43 surrounds the first molded part R1 from the side of the first panel 481, and the second end is releasably released between the inflator 42 and the first molded part R1 during expansion and deployment. Temporarily coupled to the panel 482. For example, the other end of the 1st holding member 43 is sewn to the 2nd panel 482, and the other end of the 1st holding member 43 has seam S1 formed. In this way, since the first holding member 43 surrounds the first molded portion R1, the shape and position of the first molded portion R1 are maintained until expansion and development.

The second holding member 44 has a through hole 444 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 444 of the second holding member 44, one end of the second holding member 44 is engaged with the stud bolt 421. The 2nd holding member 44 covers the 1st part 41a (1st molding part R1) from the 1st panel 481 side, and also surrounds the 2nd molding part R2 and the inflator 42. The other end of the second holding member 44 is temporarily engaged to the second panel 482 in the vicinity between the first molded portion R1 and the second molded portion R2 so as to be releasable during expansion and deployment. For example, the other end of the 2nd holding member 44 is sewn to the 2nd panel 482, and the seam line S2 is formed in the other end of the 2nd holding member 44. In this way, since the second holding member 44 surrounds the second molded part R2, the shape and position of the second molded part R2 are maintained until expansion and development.

Thus, since the 1st molding part R1 is held by the 1st holding member 43, and the 2nd molding part R2 is held by the 2nd holding member 44, until expansion and development, the 1st It is possible to prevent in advance that the first part 41a and the third part 41c are entangled, and the occurrence of trouble during expansion and development.

The first holding member 43 has a first weak portion 431 formed on the side of the driver's seat 2 (backrest 22), that is, at a portion facing the side of the backrest 22. Like the first embodiment, the first weak portion 431 extends in the width direction of the first holding member 43 . The first weak portion 431 makes the first holding member 43 easy to tear, and prevents the first holding member 43 from expanding and deploying the first portion 41a (first shaped portion R1). It can be expanded and deployed easily and reliably.

In addition, the second holding member 44 is a second weak part ( 443) is formed. Like the first embodiment, the second weak portion 443 extends in the width direction of the second holding member 44 . The second weak portion 443 makes the second holding member 44 easy to tear, and the second retaining member 44 is inflated and deployed when the second portion 41b and the third portion 41c (second shaped portion R2) are expanded. The support member 44 does not interfere and can be easily and reliably inflated and deployed.

Furthermore, the first weak part 431 is formed at a position corresponding to the direction in which the first part 41a is to be deployed, and the second weak part 443 is formed in a position corresponding to the direction in which the third part 41c is to be developed. is formed in Thus, the deployment of the first part 41a and the third part 41c is guided.

About the same part as Embodiment 1 or 2, the same code|symbol is attached|subjected and detailed description is abbreviate|omitted.

(Embodiment 4)

Fig. 12 is a cross-sectional view schematically showing a state in which the cushion 41 of the airbag device 4 according to the fourth embodiment is accommodated. FIG. 12 shows a state in which the cushion 41 is accommodated in the storage space 40, and for convenience, only the cushion 41, the inflator 42, and the stud bolt 421 are shown.

The 1st holding member 43 and the 2nd holding member 44 are band shape similarly to Embodiment 1.

The second holding member 44 has a through hole 444 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 444 of the second holding member 44, one end of the second holding member 44 is engaged with the stud bolt 421. The 2nd holding member 44 covers the 1st part 41a (1st molding part R1) from the 1st panel 481 side, and also surrounds the 2nd molding part R2 and the inflator 42. The other end of the second holding member 44 is temporarily engaged to the second panel 482 in the vicinity between the first molded portion R1 and the second molded portion R2 so as to be releasable during expansion and deployment. For example, the other end of the 2nd holding member 44 is sewn to the 2nd panel 482, and the seam line S2 is formed in the other end of the 2nd holding member 44. In this way, since the second holding member 44 surrounds the second molded part R2, the shape and position of the second molded part R2 are maintained until expansion and development.

The first holding member 43 has a through hole 432 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 432 of the first holding member 43, one end of the first holding member 43 is engaged with the stud bolt 421. The 1st holding member 43 covers the 1st molding part R1 from the 1st panel 481 side, and the 2nd holding member 44 releasable when the other end expands and deploys near the 2nd molding part R2. ) are bonded to. For example, the other end of the 1st holding member 43 is sewn to the 2nd holding member 44, and the seam line S1 is formed in the other end of the 1st holding member 43. Thereby, the 1st molded part R1 is clamped by the 2nd holding member 44 and the 1st holding member 43, and the shape and position of the 1st molded part R1 are maintained until expansion and development.

Thus, since the 1st molding part R1 is held by the 1st holding member 43, and the 2nd molding part R2 is held by the 2nd holding member 44, until expansion and development, the 1st It is possible to prevent in advance that the first part 41a and the third part 41c are entangled, and the occurrence of trouble during expansion and development.

The first holding member 43 has a first weak portion 431 formed on the side of the driver's seat 2 (backrest 22), that is, at a portion facing the side of the backrest 22. Like the first embodiment, the first weak portion 431 extends in the width direction of the first holding member 43 . The first weak portion 431 makes the first holding member 43 easy to tear, and prevents the first holding member 43 from expanding and deploying the first portion 41a (first shaped portion R1). It can be expanded and deployed easily and reliably.

In addition, the second holding member 44 is a second weak part ( 443) is formed. Like the first embodiment, the second weak portion 443 extends in the width direction of the second holding member 44 . The second weak portion 443 makes the second holding member 44 easy to tear, and the second retaining member 44 is inflated and deployed when the second portion 41b and the third portion 41c (second shaped portion R2) are expanded. The support member 44 does not interfere and can be easily and reliably inflated and deployed.

Furthermore, the first weak part 431 is formed at a position corresponding to the direction in which the first part 41a is to be deployed, and the second weak part 443 is formed in a position corresponding to the direction in which the third part 41c is to be developed. is formed in Thus, the deployment of the first part 41a and the third part 41c is guided.

About the same part as Embodiment 1, 2, or 3, the same code|symbol is attached|subjected and detailed description is abbreviate|omitted.

(Embodiment 5)

Fig. 13 is a cross-sectional view schematically showing a state in which the cushion 41 of the airbag device 4 according to the fifth embodiment is accommodated. 13 shows a state in which the cushion 41 is accommodated in the storage space 40, and only the cushion 41, the inflator 42, and the stud bolt 421 are shown for convenience.

The 1st holding member 43 and the 2nd holding member 44 are band shape similarly to Embodiment 1.

The first holding member 43 has a through hole 432 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 432 of the first holding member 43, one end of the first holding member 43 is engaged with the stud bolt 421. The first holding member 43 surrounds the first molded part R1 from the side of the first panel 481, and the other end is releasable between the second molded part R2 and the first molded part R1 when expanding and deploying. It is temporarily coupled to the second panel 482. For example, the other end of the 1st holding member 43 is sewn to the 2nd panel 482, and the other end of the 1st holding member 43 has seam S1 formed. In this way, since the first holding member 43 surrounds the first molded portion R1, the shape and position of the first molded portion R1 are maintained until expansion and development.

The second holding member 44 has a through hole 444 through which a stud bolt 421 is inserted is formed at one end in the longitudinal direction. When the stud bolt 421 is inserted into the through hole 444 of the second holding member 44, one end of the second holding member 44 is engaged with the stud bolt 421. The 2nd holding member 44 covers the 1st part 41a (1st molding part R1) from the 1st panel 481 side, and also surrounds the 2nd molding part R2 and the inflator 42. The other end of the second holding member 44 is temporarily engaged to the first holding member 43 in the vicinity of the first molded portion R1 so as to be releasable during expansion and development. For example, the other end of the 2nd holding member 44 is sewn to the 1st holding member 43, and the seam line S2 is formed in the other end of the 2nd holding member 44. That is, the second molding portion R2 is surrounded by the second holding member 44 and is also sandwiched by the first holding member 43 and the second holding member 44 . Accordingly, the shape and position of the second molding part R2 are maintained until expansion and development.

Thus, since the 1st molding part R1 is held by the 1st holding member 43, and the 2nd molding part R2 is held by the 2nd holding member 44, until expansion and development, the 1st It is possible to prevent in advance that the first part 41a and the third part 41c are entangled, and the occurrence of trouble during expansion and development.

In the first holding member 43, a first weak portion 431 extending in the width direction of the first holding member 43 is formed on the side of the driver's seat 2 (backrest 22). The first weak portion 431 makes the first holding member 43 easy to tear, and prevents the first holding member 43 from expanding and deploying the first portion 41a (first shaped portion R1). It can be expanded and deployed easily and reliably.

In addition, the second retaining member 44 is located at a position corresponding to the direction in which the first molding part R1, the inflator 42, and the second molding part R2 are installed side by side, for example, a matching position, the second holding member 44 A second weak portion 443 extending in the width direction of the supporting member 44 is formed. The second weak portion 443 makes the second holding member 44 easy to tear, and the second retaining member 44 is inflated and deployed when the second portion 41b and the third portion 41c (second shaped portion R2) are expanded. The support member 44 does not interfere and can be easily and reliably inflated and deployed.

Furthermore, the first weak part 431 is formed at a position corresponding to the direction in which the first part 41a is to be deployed, and the second weak part 443 is formed in a position corresponding to the direction in which the third part 41c is to be developed. is formed in Thus, the deployment of the first part 41a and the third part 41c is guided.

About the same part as Embodiment 1, 2, 3, or 4, the same code|symbol is attached|subjected and detailed description is abbreviate|omitted.

2 driver's seat
3 passenger seat
4 airbag device
41 cushion (airbag)
42 Inflator
43 first holding member
44 second holding member
100 vehicles
421 stud bolt
431 first weak point
443 second weak spot
R1 1st molding part
R2 2nd molding part
S1, S2 seams

Claims (10)

Mounted on one side of the seat 2 of the vehicle 100 in a state in which molding parts R1 and R2 formed by bending both ends facing each other in the longitudinal direction in the horizontal direction when the sheet-shaped airbag 41 is inflated and deployed are formed a plurality of times. In the airbag device 4 to be,
A first holding member (43) for holding the first molding part (R1) of one end of the both ends at least until the start of expansion and development;
a second holding member 44 for holding the second shaped portion R2 at the other end at least until the start of expansion and development; and
An inflator 42 installed close to the one end in the airbag 41 and injecting gas,
In the airbag 41 before inflation and deployment, the first molding part R1, the inflator 42 and the first molding part R1 are interposed between the inflator 42 and the second molding part R2. An airbag device (4) characterized in that the second molding portion (R2) is disposed. Mounted on one side of the seat 2 of the vehicle 100 in a state in which molding parts R1 and R2 formed by bending both ends facing each other in the longitudinal direction in the horizontal direction when the sheet-shaped airbag 41 is inflated and deployed are formed a plurality of times. In the airbag device 4 to be,
A first holding member (43) for holding the first molding part (R1) of one end of the both ends at least until the start of expansion and development;
a second holding member 44 for holding the second shaped portion R2 at the other end at least until the start of expansion and development; and
An inflator 42 installed close to the one end in the airbag 41 and injecting gas,
The airbag device (4) characterized in that the first holding member (43) has a first weak portion (431) formed on one side of the seat (2). According to claim 1 or 2,
The second holding member 44,
Surrounding the second molding portion (R2),
An airbag device (4) characterized in that a second weak part (443) is formed at a position corresponding to the direction in which the inflator (42), the first molding part (R1) and the second molding part (R2) are installed side by side. . delete According to claim 1 or 2,
The first holding member 43,
Surrounding the first molding portion (R1),
One end is fixed to a fixing member 421 fixing the inflator 42 to one side of the seat 2,
An airbag device (4) characterized in that the other end corresponding to the one end is engaged with the airbag (41) to be released between the inflator (42) and the first molded part (R1) during inflation and deployment. According to claim 5,
The second holding member 44,
Surrounding the inflator 42 and the second molding part R2,
One end is fixed to the fixing member 421,
An airbag device (4) characterized in that the other end corresponding to the one end is engaged with the first holding member (43) releasably during inflation and deployment. According to claim 5,
The second holding member 44,
Surrounding the inflator 42 and the second molding part R2,
One end is fixed to the fixing member 421,
An airbag device (4) characterized in that the other end corresponding to the one end is engaged with the airbag (41) so as to be released when it is inflated and deployed near the inflator (42). According to claim 5,
The second holding member 44,
Surrounding the inflator 42 and the second molding part R2,
One end is fixed to the fixing member 421,
An airbag device (4) characterized in that the other end corresponding to the one end is engaged with the airbag (41) to be released between the first molding part (R1) and the second molding part (R2) when inflating and deploying. ). According to claim 1 or 2,
The second holding member 44,
Surrounding the inflator 42 and the second molding part R2,
One end is fixed to a fixing member 421 fixing the inflator 42 to one side of the seat 2,
The other end corresponding to the one end is coupled to the airbag 41 releasably during inflation and deployment between the first molding part R1 and the second molding part R2,
The first holding member 43,
One end is fixed to the fixing member 421,
An airbag device (4) characterized in that the other end corresponding to the one end is engaged with the second holding member (44) in the vicinity of the second molded portion (R2) in a releasable manner during inflation and deployment. According to claim 1 or 2,
The first holding member 43,
One end is fixed to a fixing member 421 fixing the inflator 42 to one side of the seat 2,
The other end corresponding to the one end is coupled to the airbag 41 releasably during inflation and deployment between the first molding part R1 and the second molding part R2,
The second holding member 44,
Surrounding the inflator 42 and the second molding part R2,
One end is fixed to the fixing member 421,
An airbag device (4) characterized in that the other end corresponding to the one end is engaged with the first holding member (43) releasably during inflation and deployment.

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