JP2009202829A - Connection structure of curtain airbag device, and curtain airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of a curtain airbag device capable of consistently deploying an airbag body in a predetermined shape by preventing a tape part for executing the airbag body, a front pillar and a rear pillar from being twisted when the airbag body is inflated and deployed. <P>SOLUTION: The connection structure of the curtain airbag device 1 connects an airbag body 10 which can be inflated and deployed in a curtain shape from upper sides to lower sides of side window parts 7, 8 of a vehicle 2 to front and rear ends of the airbag body 10, a front pillar 3 and a rear pillar 4 of the vehicle 2, and comprises a tape part 30 with one end thereof being attached to the airbag body 10, and a fixed part 40 which is fixed to the front pillar 3 and the rear pillar 4. The other end of the tape part 30 is turnably connected to the fixed part 40 and the tape part 30 is turnably connected to the fixed part 40 around the axis parallel to its longitudinal direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a coupling structure for coupling an airbag body and a front pillar and / or a rear pillar in a curtain airbag device in which the airbag body is inflated and deployed along a vehicle side window when a vehicle collides, and the coupling structure. The present invention relates to a curtain airbag device having

  Conventionally, a curtain airbag device is housed from the front pillar of an automobile to a roof side rail with the airbag body folded in a roll shape, and when the automobile collides sideways or rolls over, By injecting the high-pressure gas and introducing it into the airbag body, the airbag body is inflated and deployed in a curtain shape along the inner surface of the window side on the vehicle side. This effectively protects the side of the occupant's head from the impact during a side collision of the vehicle or when the vehicle rolls over.

  An example of such a curtain airbag device is disclosed in, for example, Japanese Patent Laid-Open No. 2006-88844 (Patent Document 1). In the curtain airbag device described in Patent Document 1, the impact detection sensor detects that the vehicle has received a certain impact force, and the inflator generates gas in accordance with the sensor signal. Furthermore, by supplying this gas to the airbag body of the side airbag device, the airbag body is inflated and deployed along the side glass toward the passenger compartment to protect the occupant's head and the like.

  The airbag main body of this curtain airbag device is provided with three bag portions that are inflated when gas is supplied, at the front portion, the middle portion, and the rear portion. Further, around each of these bag portions, a front non-inflatable portion on the front end side of the airbag body, an intermediate non-inflatable portion in the middle, and a rear non-inflatable portion at the rear end are arranged integrally with the bag portion. Yes.

  In addition, one end of a strap-like or band-like front strap (front tape portion) is attached to the front non-inflatable portion, and the other end of the front strap is attached to the front pillar of the vehicle. It is attached via a fixed bracket. Similarly, one end of a strap-like or band-like rear strap (rear tape portion) is attached to the rear non-inflatable portion, and the other end of the rear strap is fixed to the rear pillar of the vehicle. It is attached via a bracket. By providing such front and rear straps, when the airbag body is inflated and deployed, the airbag body is pulled by the front and rear straps, so that the position of the deployed airbag body is stabilized, and the airbag body The load can be supported when a person hits the head.

  Further, in Patent Document 1, a round hole is formed in the front string fixing bracket and the rear string fixing bracket. By inserting the other end side of the strap into the round hole formed in the fixing bracket and turning it back, the folded other end side is superimposed on the strap and fixed by sewing or the like. The other end portions of the front and rear straps are fixed to the rear strap fixing bracket by crimping.

Thus, by forming round holes in the front string fixing bracket and the rear string fixing bracket and scrubbing and fixing the front and rear straps, it becomes possible to rotate the front and rear straps around the round holes of the brackets. . This prevents the front and rear straps from being pinched between the pillar and the bracket, and when the airbag body is inflated and deployed downward from the roof side rail, the front and rear straps are matched to the deployment behavior. In addition, the airbag strap can be smoothly deployed by easily rotating the rear strap.
JP 2006-88844 A

  In general, the airbag body of the curtain airbag device is folded so as to be rolled up from the lower edge side when attached to the vehicle in consideration of its deployment behavior, etc., and maintains its folded form It is housed from the front pillar of the car to the roof side rail.

  Therefore, when the front and rear straps have one end attached to the front or rear part of the airbag body as in Patent Document 1, the airbag body is rolled with the strap attached. The front strap fixing bracket and the rear strap fixing bracket as described above are attached to the other end of the strap, and the front pillar fixing bracket and the rear strap fixing bracket are attached to the front pillar using bolts or the like. Fasten to the rear pillar. As a result, the curtain airbag device is mounted at a predetermined position of the automobile.

  However, if the airbag body of the curtain airbag device is folded into a roll shape in this way and the other end of the strap is fixed to the front pillar or rear pillar, the curtain airbag device is activated and folded into a roll shape. When the airbag main body is inflated and deployed, the airbag main body is deployed in a curtain shape along the inner side of the window portion on the side of the vehicle while rotating so as to open a roll-like folded configuration.

  At this time, as shown in FIG. 6, the front strap 63 connecting the front portion of the airbag body 61 and the front pillar 62 and the rear strap connecting the rear portion of the airbag body and the rear pillar are deployed. The airbag body 61 is twisted by receiving the rotation. As a result, there is a possibility that the deployment behavior of the airbag body 61 may be affected, and the heel 64 is generated in the non-inflatable portion 61a at the front or rear of the airbag body 61, or the airbag body 61 is pulled. Therefore, there is a problem that the position of the inflating portion 61b may be shifted.

  Furthermore, the curtain airbag device can effectively protect the occupant's head from glass fragments by wrapping the occupant's head with the airbag body even if the side window portion breaks at the time of a car collision. . However, as described above, when the airbag main body is inflated and deployed, when the airbag main body is wrinkled or pulled, the protective area of the airbag main body for protecting the passenger's head from glass fragments There was also a problem that there was a possibility that it could not be properly secured.

  The present invention has been made to solve such conventional problems, and a specific object of the present invention is to provide a tape portion that connects the airbag body and the front pillar and / or the rear pillar when the airbag body is inflated and deployed. Curtain airbag device coupling structure that can prevent twisting, stably deploy the airbag body into a predetermined shape, and reliably protect the occupant's head side with the inflatable portion, and the coupling An object of the present invention is to provide a curtain airbag device having a structure.

  In order to achieve the above object, the curtain airbag device connecting structure provided by the present invention has a basic structure in which air that can be inflated and deployed in the form of a curtain from the upper side of the side window portion of the vehicle downwards. A curtain airbag device coupling structure for coupling a bag body, a front end portion and / or a rear end portion of the airbag body, and a front pillar and / or a rear pillar of the vehicle, wherein one end is attached to the airbag body. A tape portion that is attached, and a fixed portion fixed to the front pillar and / or the rear pillar. The other end of the tape portion is the fixed portion, and the tape portion is in the length direction. The main feature is that it is rotatably connected to the fixed part around an axis parallel to the axis.

  In the connection structure of the curtain airbag device according to the present invention, the other end of the tape portion includes a cylindrical pin body portion and a connection pin having a flange portion disposed at least one end of the pin body portion, and the flange portion. It is connected to the fixed portion via a pin holding portion that is rotatably held, or the other end of the tape portion is a spherical portion and a concave portion that holds the spherical portion slidably. It is preferable that it is connected with the said fixed part via.

  In the connecting structure of the curtain airbag device according to the present invention, the fixed portion is formed integrally with the fixed main body portion fixed to the front pillar and / or the rear pillar, and the fixed main body portion. It is preferable to have a ring portion and a fixed portion side connecting portion that is movably engaged with the ring portion and to which the other end of the tape portion is connected.

  Further, according to the present invention, the front end portion and / or the rear end portion of the airbag main body, the front pillar and / or the rear pillar of the vehicle, using the connecting structure of the curtain airbag device having the above-described configuration. Can be provided.

  The connecting structure of the curtain airbag device according to the present invention includes a tape portion having one end attached to an airbag main body that can be inflated and deployed in a curtain shape, and a fixed portion fixed to a front pillar and / or a rear pillar of a vehicle. And have. Further, the other end of the tape portion is connected to the fixed portion so that the tape portion can rotate with respect to the fixed portion around an axis parallel to the length direction thereof.

  According to such a connection structure according to the present invention, since the other end of the tape portion is rotatably connected to the fixed portion, when the airbag body rotates so as to open the roll-like folded form In addition, the tape portion can be easily rotated in accordance with the rotation of the airbag body. For this reason, it is possible to prevent the tape portion itself from being twisted when the airbag body is deployed, and to smoothly and stably deploy the airbag body in a predetermined shape to stably protect the side of the occupant's head. Is possible.

  In such a connection structure according to the present invention, the other end of the tape part is a cylindrical pin body part and a connection pin having a flange part disposed on at least one end of the pin body part, and the flange part is rotatable. It is connected to the fixed part through a pin holding part that is held by the pin. Thereby, it can connect so that a tape part can be smoothly rotated with respect to a fixed part, without comprising a connection structure complicatedly.

  Moreover, in this invention, the other end of the said tape part may be connected with the fixed part through the spherical part and the recessed part which hold | maintains the spherical part so that sliding is possible. Also by this, it can connect so that a tape part can be smoothly rotated with respect to a fixed part, without comprising a connection structure complicatedly.

  Further, in the present invention, the fixed part is movable to the ring part, a fixed body part fixed to the front pillar and / or the rear pillar, a ring part formed integrally with the fixed body part, and the ring part. It has a fixed portion side connecting portion to which the other end of the tape portion is connected.

  In the curtain airbag device, when the airbag main body is deployed downward, one end of the tape portion is attached to the airbag main body, so that the tape portion rotates around the fixed portion. Since the fixed portion is configured as described above, the fixed portion side connecting portion is movable in a state of being engaged with the ring portion. Thus, when the airbag body is deployed, the tape portion can be stably rotated around the axis parallel to the length direction of the tape portion with respect to the fixed portion, and the tape portion can be more reliably twisted. Can be prevented.

  And if it is a curtain airbag device by which the front end part and / or the rear end part of the airbag main body and the front pillar and / or the rear pillar of the vehicle are connected using the connecting structure according to the present invention as described above, When the airbag body is inflated and deployed, the tape portion can also be rotated along with the rotation of the airbag body.

  As a result, it is possible to prevent twisting of the tape portion, and to smoothly and stably deploy the airbag main body into a predetermined shape, and also to stably secure the protection area of the airbag main body. The side of the head can be reliably protected.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to the following examples, and has a configuration substantially the same as the configuration described in the claims of the present invention and has the same operational effects. Various changes can be made.

  For example, in the following embodiments, a case is described in which a connecting tape portion is provided only at the front end portion of an airbag body in a curtain airbag and is connected to a front pillar. It is possible to connect to the rear pillar by arranging a connecting tape part only at the end part or at both the front end part and the rear end part of the airbag body, or to both the front pillar and the rear pillar. .

FIG. 1 is a side view of a main part schematically illustrating a state when the curtain airbag device according to the first embodiment of the present invention is attached to a vehicle body and deployed, and FIG. 2 is an airbag in the curtain airbag device. It is explanatory drawing explaining the folding method of a main body. FIG. 3 is a perspective view schematically showing a main part of a connecting structure in which the front end of the airbag body of the curtain airbag device is connected to the front pillar. FIG. 4 is an enlarged view of the connecting structure. It is an enlarged view typically shown.
In the following description, the front-rear direction, the up-down direction, and the left-right direction refer to the front-rear direction, the up-down direction, and the left-right direction, respectively, of an automobile equipped with a curtain airbag device.

  The curtain airbag device 1 according to the first embodiment is housed and mounted in a state of being folded inside an interior material such as a roof head lining along the roof side rail 6 from the upper part of the front pillar 3 of the automobile 2. The

  Note that the automobile 2 on which the curtain airbag device 1 is mounted includes a front seat and a rear seat (not shown) in which passengers can be seated, and the front seat and the rear seat are provided on the left and right sides of the vehicle body. Side window portions 7 and 8 are provided corresponding to the positions. The vehicle 2 includes a front pillar 3 disposed at the front of the vehicle body, a rear pillar 4 disposed at the rear of the vehicle body, and a center pillar 5 disposed between the front and rear pillars 3 and 4. A roof side rail 6 is disposed at the upper end of each pillar 3, 4, 5.

  The curtain airbag device 1 includes an airbag main body 10 serving as a protection area, an inflator 20 that is disposed on the rear side of the airbag main body 10 and supplies gas into the airbag main body 10, and an airbag main body 10. The connecting tape portion 30 having one end attached to the front end portion, the fixed portion 40 fixed to the front pillar 3 while the other end of the connecting tape portion 30 is connected, and the upper edge of the airbag body 10 A plurality of attachment pieces 21 are provided so as to protrude and attach the airbag body 10 to the roof side rail 6.

The airbag main body 10 is formed in an elongated shape in the front-rear direction by overlapping and sewing the right and left base fabric panels 10a and 10b having different airtight shapes. In the first embodiment, these base fabric panels 10a and 10b are made of a woven fabric having a basis weight of 200 g / m ² woven using, for example, 315 denier nylon 66 yarn, and the panel surface. Is coated with a resin such as rubber or silicone resin. In the present invention, the material of the base fabric panel is not particularly limited, and can be changed as appropriate.

  The airbag body 10 includes a front seat side inflatable portion 11 and a rear seat side inflatable portion 12 that are arranged in the front-rear direction and protect the heads of passengers seated in the front seat and the rear seat, and the front seat side and the rear seat side. A communicating part 13 that communicates the upper part between the inflating parts 11, 12, a gas introducing part 14 formed at the rear end side upper part of the airbag body 10, and a front non-inflating part arranged in front of the front seat side inflating part 11 15 and an intermediate non-inflatable portion 16 disposed below the communicating portion 13 between the front seat side and rear seat side inflatable portions 11 and 12.

  The front seat side and rear seat side inflatable portions 11 and 12 are formed in hollow air chambers, and the upper portions of the inflatable portions 11 and 12 are communicated with each other via the communication portion 13. Further, the front seat side and rear seat side inflatable portions 11 and 12 control the flow of gas introduced into the air bag body 10 when the air bag body 10 is inflated and deployed, and the left and right sides of the inflatable portions 11 and 12. A restricting portion 17 that restricts the width dimension in the direction is formed by a sewing line for sewing the two base fabric panels 10a and 10b.

  Further, a cylindrical protective cloth 18 for preventing the airbag main body 10 from being damaged by the high-pressure gas generated from the inflator 20 is attached to the inside of the gas introduction part 14. The arrangement position and shape of the restricting portion 17 and the like, the dimensions of the protective cloth 18 and the like can be appropriately changed according to the form and size of the airbag body.

  As shown in FIGS. 3 and 4, the connecting tape portion 30 has a strip-like tape body portion 31 having one end sewn to the front end portion of the front non-inflatable portion 15 of the airbag body 10, and the tape body portion. 31 has a first connecting part (tape part side connecting part) 32 attached to the other end, and this first connecting part 32 has an annular part 32a for inserting the tape main body part 31; And a pin holding portion 32b for holding a flange portion of the connecting pin 50 described later. The connecting tape portion 30 is obtained by sewing the tape edge portion of the tape main body portion 31 to the airbag main body 10 in a state where the tape main body portion 31 is inserted through the annular portion 32a of the first connecting portion 32 and turned back. It is attached.

  The fixed portion 40 includes a fixed main body portion 41 fixed to the front pillar 3 of the vehicle body using a bolt (not shown), a ring portion 42 erected from an end edge portion of the fixed main body portion 41, and the like. A second connecting portion (fixed portion side connecting portion) 43 movably engaged with the ring portion 42, and the second connecting portion 43 can move along the ring portion 42. Further, the ring portion 42 is engaged so as to be able to rotate around the axis.

  In the first embodiment, the fixed main body 41 is formed with a hole 41 a for fixing the fixed main body 41 to the front pillar 3 with a bolt. Further, like the first connecting portion 32, the second connecting portion 43 is formed with a pin holding portion 43a for holding a flange portion of a connecting pin 50 described later.

  And the 1st connection part 32 of the connection tape part 30 and the 2nd connection part 43 of the fixing | fixed part 40 are the cylindrical pin main-body parts 50a and the flange part which is distribute | arranged at the both ends of the same pin main-body part 50a. The connecting tape portion 30 is connected to the fixed portion 40 via the connecting pin 50 so as to be rotatable about an axis parallel to the length direction. In the present invention, the materials of the first and second connecting portions 32 and 43 and the connecting pin 50 are not particularly limited, and these members may be made of metal or synthetic resin.

  The mounting pieces 21 are arranged at a plurality of locations along the upper side portion of the airbag body 10 corresponding to the positions of a plurality of brackets (not shown) that are provided on the roof side rail 6 of the vehicle body. Each attachment piece 21 is provided with an attachment hole (not shown) for inserting a fastener such as a screw.

  When the curtain airbag device 1 according to the present embodiment is mounted on the automobile 2, the airbag body 10 is folded in a roll shape from the lower edge portion toward the upper portion, and further, the folded configuration is maintained. It is accommodated along the roof side rail 6 from the front pillar 3 of the vehicle body.

Here, the folding method of the airbag body 10 of the curtain airbag device 1 will be described more specifically.
When the airbag body 10 is folded, first, as shown in FIGS. 2A and 2A ′, the airbag body 10 is held in a flatly spread state. Next, for example, air is sent to the upper side of the inflating portions 11 and 12 and the communication portion 13 of the airbag body 10, and the left and right base fabric panels 10 a and 10 b on the upper side of the inflating portions 11 and 12 and the communication portion 13 are left and right. The left and right arm portions 25 are formed on the upper side of the airbag body 10 by further folding the portion of the base fabric panel that is spaced apart left and right up and down (see FIGS. 2B and 2B). )).

  Subsequently, the lower end portion of the airbag body 10 on which the left and right arm portions 25 are formed is sandwiched by, for example, a long clamping member (not shown), and the airbag body 10 is attached to the clamping member while rotating the clamping member. By rubbing, the airbag body 10 is folded into a roll shape (see FIGS. 2C and 2C ′). After the airbag body 10 is folded into a roll shape, the holding member is extracted from the front or rear side of the airbag body 10. Thus, an assembly 26 folded in a roll shape is formed below the left and right arm portions 25 of the airbag body 10 (see FIGS. 2D and 2D).

  Thereafter, the left and right arm portions 25 are rubbed over the assembly 26 (see FIGS. 2E and 2E). Finally, a sleeve 27 is placed on the assembly 26 covered with the left and right arms 25 to hold the folded state of the airbag body 10. Thus, the curtain airbag device 1 is obtained in which the airbag body 10 is folded into a roll shape so as to be accommodated along the roof side rail 6 from the front pillar 3.

  The sleeve 27 is provided with a plurality of short slits (not shown) that form breakage portions that break when the airbag body 10 is inflated and deployed. Further, a plurality of holes 27a for drawing out the attachment piece 21 of the curtain airbag device 1 to the outside are formed at positions opposite to the slits (see FIG. 3), and the sleeve 27 is formed in the airbag body 10. Even if it covers, each attachment piece 21 will be in the state which protruded from the sleeve 27 outside. Furthermore, the connecting tape portion 30 of the curtain airbag device 1 and the fixed portion 40 connected to the connecting tape portion 30 via the connecting pin 50 are in a state of protruding from the front end of the sleeve 27 to the outside.

  Thereafter, in the curtain airbag device 1 in which the airbag body 10 is folded as described above, the attachment piece 21 protruding from the upper end edge of the airbag body 10 is disposed on the front pillar 3 and the roof side rail 6. It is mounted on the vehicle body by fixing to each mounted portion 9 using screws or the like, and further fixing the fixed portion 40 to the fixed portion 40 arranged on the front pillar 3 using bolts.

  At this time, tension is applied to the connecting tape portion 30, and the connecting tape portion 30 is in a state of being pulled straight without being twisted or sagging. After the curtain airbag device 1 is installed, interior materials such as a front pillar 3 garnish and a roof head lining are attached to the front pillar 3 and the roof side rail 6.

  The curtain airbag device 1 mounted on the vehicle body as described above transmits a signal from the impact detection sensor to the inflator 20 when the automobile 2 collides and an impact detection sensor (not shown) detects a certain level of impact. Then, a high-pressure gas is generated from the inflator 20, and the high-pressure gas is supplied from the gas introduction part 14 of the airbag body 10 to the front seat side inflating part 11 and the rear seat side inflating part 12.

  As a result, the inflatable portions 11 and 12 of the air bag body 10 are inflated to break the sleeve 27 (not shown), and further, the front pillar garnish and the roof head lining are deformed so that the air bag body 10 is moved to the side window portion 7. , 8 are deployed in a curtain shape along the inner surface side. At this time, since the airbag main body 10 was accommodated in a state of being folded into a roll before being inflated and deployed, the airbag main body 10 is deployed while rotating so as to expand its folded form.

  In this case, in the curtain airbag device 1 of the first embodiment, as described above, the connecting tape portion 30 and the fixed portion 40 are parallel to the length direction of the connecting tape portion 30 with respect to the fixed portion 40. Since they are connected so as to rotate around a certain axis, the connecting tape portion 30 attached to the front end portion of the airbag body 10 can be easily rotated in accordance with the rotation of the airbag body 10. As a result, the curtain airbag device 1 according to the first embodiment prevents the connection tape portion 30 and the front end portion of the airbag body 10 from being twisted or wrinkled like the conventional curtain airbag device. The main body 10 can be appropriately and stably deployed in a predetermined shape as shown in FIG.

  In particular, in the curtain airbag device 1 according to the first embodiment, the second connecting portion 43 of the fixed portion 40 is movably engaged with the ring portion 42. Thus, when the airbag body 10 is rotated and deployed downward, the axial direction of the connecting pin 50 that is rotatably connected to the first and second connecting portions 32 and 43 is set to the length of the connecting tape portion 30. It can be easily directed in a direction parallel to the vertical direction.

  That is, when the airbag body 10 is deployed downward, the portion of the front end portion of the airbag body 10 to which one end of the connection tape portion 30 is attached also moves downward, so that the connection tape portion 30 is fixed. It rotates around the installation part 40. At this time, if the second connecting portion 43 of the fixed portion 40 is movably engaged with the ring portion 42, the connecting pin 30 may rotate even if the connecting tape portion 30 rotates about the fixed portion 40. The axial direction of 50 can always be directed in a direction parallel to the length direction of the connecting tape portion 30. Thereby, it becomes possible to rotate the connection tape part 30 more reliably according to rotation of the airbag main body 10 when the airbag main body 10 expand | deploys, and expands the airbag main body 10 more stably. be able to.

  As described above, according to the curtain airbag device 1 of the first embodiment, at the time of the collision of the automobile 2, the airbag main body does not cause twisting and wrinkles at the connecting tape portion 30 and the front end portion of the airbag main body 10. 10 can be stably and smoothly developed into a predetermined shape. Furthermore, when the airbag main body 10 is deployed, the connecting tape portion 30 and the fixed portion 40 give an appropriate tension to the airbag main body 10 so that the position of the airbag main body 10 can be stabilized.

FIG. 5 is a main part perspective view schematically showing a connecting structure for connecting the front end portion of the airbag main body and the front pillar of the curtain airbag device according to Embodiment 2 of the present invention.
The curtain airbag device 1 ′ of the second embodiment has an airbag body, an inflator that is disposed on the rear side of the airbag body, and supplies gas into the airbag body, and one end at the front end of the airbag body. Is connected to the other end of the connecting tape portion 30 ′, and is fixed to the front pillar, and is fixed to the upper edge of the airbag body. And a plurality of attachment pieces for attaching the airbag body to the roof side rail.

  In the curtain airbag device 1 ′ of the second embodiment, the configuration other than the connection structure for connecting the front end portion of the airbag body and the front pillar is the same as that of the first embodiment. The description will focus on the connection structure.

  The connecting tape portion 30 ′ of the second embodiment has a strip-shaped tape body portion 31 ′ whose one end is sewn to the front end portion of the airbag body, and a first portion attached to the other end of the tape body portion 31 ′. 1 linking portion (linking tape portion side linking portion) 32 ', and this first linking portion 32' has an annular portion 32a 'for inserting the tape body portion 31' and a second linking described later. A holding portion 32b ′ having a recess 32c ′ for slidably holding the spherical portion 43a ′ of the portion 43 ′.

  The fixed portion 40 ′ of the second embodiment is erected from a fixed main body portion 41 ′ fixed to the front pillar of the vehicle body using a bolt (not shown) and an end edge portion of the fixed main body portion 41 ′. It has a ring part 42 ′ and a second connecting part (fixed part side connecting part) 43 ′ that is movably engaged with the ring part 42 ′. Further, the second connecting portion 43 ′ is provided with a spherical surface portion 43a ′ that is held in the concave portion 32 ′ of the first connecting portion 32 ′, and the second connecting portion is connected to the concave portion 32 ′ of the first connecting portion 32 ′. By fitting the spherical surface portion 43a ′ of the portion 43 ′ and slidably holding the spherical surface portion 43a ′, the connecting tape portion 30 ′ is parallel to the fixed portion 40 ′ in the length direction thereof. It is rotatably connected around the axis.

  Even in the curtain airbag device 1 ′ of the second embodiment having such a connection structure, the same effect as that of the curtain airbag device 1 of the first embodiment can be obtained. That is, for example, when the automobile collides and the airbag main body is deployed while rotating downward, the connecting tape portion 30 ′ can be easily rotated in accordance with the rotation of the airbag main body.

  As a result, it is possible to prevent the twisting and wrinkling from occurring in the connecting tape portion 30 ′ and the front end portion of the airbag body, and to stably and smoothly deploy the airbag body in a predetermined shape, and to deploy the deployed air. The bag body can be stabilized at a predetermined position. Therefore, the inflated front seat side and rear seat side inflated portions of the airbag body can surely protect the occupant's head side from a large impact and appropriately protect the protection area of the airbag body against glass fragments. Can be ensured, and the safety of passengers can be greatly improved.

It is a principal part side view which shows typically a state when the curtain airbag apparatus which concerns on Example 1 of this invention is attached to a vehicle body and expand | deployed. It is explanatory drawing explaining the folding method of the airbag main body in the curtain airbag apparatus. It is a principal part perspective view which shows typically the connection structure which connected the front-end part and front pillar of the airbag main body of the curtain airbag apparatus. It is an enlarged view which expands and shows the connection structure typically. It is a principal part perspective view which shows typically the connection structure which connects the front-end part and front pillar of the airbag main body of the curtain airbag apparatus which concern on Example 2 of this invention. It is a principal part enlarged view which expands and shows the principal part of the airbag main body in the conventional curtain airbag apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1 'Curtain airbag apparatus 2 Automobile 3 Front pillar 4 Rear pillar 5 Center pillar 6 Roof side rail 7, 8 Side window part 9 Mounted part 10 Airbag main body 10a, 10b Base fabric panel 11 Front seat side expansion part 12 Rear seat side expansion part 13 Communication part 14 Gas introduction part 15 Front non-expansion part 16 Intermediate non-expansion part 17 Restriction part 18 Protective cloth 20 Inflator 21 Mounting piece 25 Arm part 26 Assembly 27 Sleeve 27a Hole part 30, 30 'Connection tape Portions 31, 31 'Tape body portion 32, 32' First connecting portion (tape portion side connecting portion)
32a, 32a ′ annular portion 32b pin holding portion 32b ′ holding portion 32c ′ recessed portion 40, 40 ′ fixing portion 41, 41 ′ fixing body portion 41a, 41a ′ hole portion 42, 42 ′ ring portion 43, 43 ′ second Connecting part (fixed part side connecting part)
43a Pin holding part 43a 'Spherical surface part 50 Connecting pin

Claims (5)

An airbag main body (10) that can be inflated and deployed in a curtain shape downward from the upper part of the side window (7, 8) of the vehicle (2), and the front end and / or rear of the airbag main body (10) A curtain airbag device (1, 1 ') connecting structure for connecting an end and the front pillar (3) and / or the rear pillar (4) of the vehicle (2),
A tape part (30, 30 ') having one end attached to the airbag body (10), and a fixed part (40, 40) fixed to the front pillar (3) and / or the rear pillar (4) ') And
The other end of the tape part (30, 30 ′) is connected to the fixed part (40, 40 ′), and the tape part (30, 30 ′) is around the axis parallel to the length direction of the fixed part. (40, 40 ') is rotatably connected to
A connecting structure for a curtain airbag device.   The other end of the tape portion (30) includes a cylindrical pin main body portion (50a), a connecting pin (50) having a flange portion disposed at at least one end of the pin main body portion (50a), and the flange portion. The connecting structure for a curtain airbag device according to claim 1, wherein the connecting structure is connected to the fixed portion (40) via a pin holding portion (32b, 43a) that is rotatably held.   The other end of the tape part (30 ′) is connected to the fixed part (40a) via a spherical part (43a ′) and a concave part (32c ′) that slidably holds the spherical part (43a ′). The connecting structure for a curtain airbag device according to claim 1, which is connected to ').   The fixed portion (40, 40 ′) includes a fixed main body portion (41, 41 ′) fixed to the front pillar (3) and / or the rear pillar (4), and the fixed main body portion (41 , 41 ′) and a ring part (42, 42 ′) formed integrally with the ring part (42, 42 ′) so as to be freely movable, and the other end of the tape part (30, 30 ′) is The connecting structure of the curtain airbag device according to any one of claims 1 to 3, further comprising a fixed portion side connecting portion (43, 43 ') to be connected.   A front end portion and / or a rear end portion of the airbag body (10) and the vehicle (2) using the connecting structure of the curtain airbag device (1, 1 ') according to any one of claims 1 to 4. A curtain airbag device in which the front pillar (3) and / or the rear pillar (4) is connected.

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