JP2011156946A - Curtain shield airbag device in vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly inflate an airbag provided at an upper side of an outer side end of a roof lining forming an upper face of a cabin toward an inner part of the cabin upon vehicle collision, and to keep good appearance of the cabin even with this structure. <P>SOLUTION: The curtain shield airbag device includes the resin roof lining 30, and the airbag 37 interposed between the outer side end of the roof 4 and the outer side end 32 of the roof lining 30. The airbag 37 that is inflated by collision of the vehicle 1 presses the outer side end 32 of the roof lining 30 downward, and the airbag 37 goes through clearance 43 generated between the outer side end 32 of the roof lining 30 moving downward by being pressed and the outer side end of the roof 4 to be inflated further toward the inner part of the cabin 5 located under the airbag. A bending part 34 that is formed into an upward projection is formed between the center side 31 and the outer side end 32 of the roof lining 30 in the width direction of the vehicle body 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a curtain shield airbag device in a vehicle in which an airbag provided on the upper side of a roof lining forming the upper surface of a passenger compartment is smoothly inflated toward the interior of the passenger compartment at the time of a vehicle collision. is there.

  Conventionally, there is a curtain shield airbag device in the vehicle described in Patent Document 1 below. According to this publication, a curtain shield airbag device in a vehicle includes a resin roof lining provided along the lower surface of the roof of the vehicle body so as to form the upper surface of the vehicle interior inside the vehicle body, and the outer edge of the roof. And an air bag interposed between the outer edges of the roof lining.

  The airbag that is inflated by the collision of the vehicle pushes the outer edge of the roof lining downward, and the roof rim and the outer edge of the roof lining moved downward by the push. The air bag is further inflated toward the interior of the vehicle interior below through a gap formed between the outer edge and the outer edge. In this case, the inflated airbag curtain shields the side wall of the vehicle body side wall, thereby preventing a secondary collision of the occupant on the side wall and protecting the occupant. ing.

  In the above case, a groove extending in the longitudinal direction of the vehicle body is formed on the upper surface between the central side and the outer edge in the vehicle width direction of the roof lining, whereby the central portion and the outer edge of the roof lining are formed. The part between the two is a thin part.

  For this reason, as described above, when the outer edge of the roof lining is pushed by the inflating airbag to move downward, stress concentration occurs in the thin section of the roof lining so that the thin section is easy. To be bent. Therefore, since the outer edge of the roof lining is smoothly rotated downward, that is, smoothly moved downward, with the thin-walled portion bent in this way as the center, air to the vehicle interior through the gap is provided. The bag is also inflated smoothly, and the occupant can be protected more reliably by the airbag.

JP 2004-224328 A

  By the way, the roof lining is made of resin and is usually formed by injection molding. When the roof lining is injection molded in this way, the lower surface of the thin portion, that is, the surface of the roof lining of the roof lining. There is a tendency for “sink” to occur. When this “sink” occurs, the appearance of the passenger compartment viewed from the passenger in the passenger compartment may be lowered, which is not preferable.

  The present invention has been made paying attention to the above situation, and an object of the present invention is to provide an airbag provided on the upper side of the outer edge of the roof lining forming the upper surface of the passenger compartment when the vehicle collides. It is to allow the vehicle interior to smoothly expand toward the interior, and to maintain a good appearance of the passenger compartment even in such a case.

The invention according to claim 1 is a resin roofing 30 provided along the lower surface of the roof 4 of the vehicle body 2 so as to form the upper surface of the passenger compartment 5 inside the vehicle body 2, the outer edge of the roof 4 and the roof flying 30. An airbag 37 interposed between the outer edge 32 and the airbag 37 that is inflated by a collision of the vehicle 1 pushes the outer edge 32 of the roof lining 30 downward. In addition, a gap 43 formed between the outer edge portion 32 of the roof lining 30 and the outer edge portion of the roof 4 that has been moved downward by this pushing operation is passed, and the airbag 37 is located inside the lower compartment 5. In a curtain shield airbag device in a vehicle that is further expanded toward the vehicle,
A curtain shield airbag device for a vehicle, characterized in that a bent portion 34 that protrudes upward is formed between a central portion side 31 and an outer edge portion 32 in the width direction of the vehicle body 2 of the roof lining 30. is there.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

According to the first aspect of the present invention, there is provided a resin roof lining provided along the lower surface of the roof of the vehicle body so as to form a vehicle upper surface inside the vehicle body, and between the outer edge of the roof and the outer edge of the roof lining. The airbag that is inflated by a vehicle collision pushes the outer edge of the roof lining downward and moves downward by the push. In a curtain shield airbag device in a vehicle in which a gap generated between an outer edge of a roof lining and an outer edge of a roof is passed through, and the airbag is further inflated toward the interior of the vehicle interior below the airbag.
A bent portion that protrudes upward is formed between the center side and the outer edge of the roof lining in the vehicle width direction.

  For this reason, when the outer edge of the roof lining is moved downward by being pushed by the inflating airbag at the time of the collision of the vehicle, stress concentration occurs in the bent portion, and the bent portion is easily formed. Can be bent. Therefore, since the outer edge of the roof lining is smoothly rotated downward, that is, smoothly moved downward about the bent portion thus bent, air to the vehicle interior through the gap is supplied. The bag is smoothly inflated, and the protection of the occupant by the airbag is more reliably achieved.

  In the above case, the roof lining is made of resin and is usually formed by injection molding. Between the central portion side and the outer edge of the roof lining, there is a thin portion as in the prior art. Therefore, when the roof lining is injection-molded, defects such as “sink marks” may occur on the lower surface between the center side and the outer edge of the roof lining. Is prevented. Therefore, as described above, even when the airbag is inflated smoothly toward the interior of the vehicle interior at the time of a vehicle collision, the appearance of the vehicle interior is maintained well.

  In addition, since the bent portion is formed so as to be convex upward, the recessed space on the lower surface side of the bent portion makes the vehicle compartment look wider. Therefore, the appearance of the passenger compartment can be improved.

It is the II sectional view taken on the line of FIG. 1 is an overall plan view of a vehicle.

  Regarding the curtain shield airbag device in the vehicle of the present invention, the airbag provided on the upper side of the outer edge of the roof lining forming the upper surface of the passenger compartment is inflated smoothly toward the inner portion of the passenger compartment when the vehicle collides, Moreover, even if it does in this way, in order to implement | achieve the objective of maintaining the appearance of a vehicle interior favorably, the form for implementing this invention is as follows.

  That is, a curtain shield airbag device in a vehicle includes a resin roof lining provided along the lower surface of the roof of the vehicle body so as to form a vehicle upper surface inside the vehicle body, and an outer edge of the roof and an outer edge of the roof lining. And an airbag interposed between the two parts. The airbag that inflates due to a vehicle collision pushes the outer edge of the roof lining downward, and the roof rim is moved downward by the pushing and the roof outer edge. The airbag is further inflated toward the interior of the vehicle interior below the gap formed between the vehicle and the vehicle. A bent portion that protrudes upward is formed between the center side and the outer edge of the roof lining in the vehicle width direction.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes a vehicle exemplified by an automobile. An arrow Fr indicates the front in the traveling direction of the vehicle 1, and the left and right described below refer to the width direction of the vehicle body 2 of the vehicle 1.

  The vehicle body 2 includes side walls 3 and 3 constituting left and right side portions thereof, and a roof 4 that constitutes an upper portion of the vehicle body 2 and is constructed on upper edge portions of the left and right side walls 3 and 3. The interior of the vehicle body 2 surrounded by 3 and 3 and the roof 4 is a vehicle compartment 5. A driving seat 8 and an assistant seat 9 are provided side by side as front seats at the front of the vehicle compartment 5, and a rear seat 10 is provided at the rear of the vehicle compartment 5.

  The side wall 3 is formed with a door opening 13 that allows communication between the inside and outside of the vehicle compartment 5. The door opening 13 is closed from the outside of the vehicle body 2 so that it can be opened and closed, and a side door 14 that constitutes a part of the side wall 3 is provided. It has been. A weather strip 15 is fixed to the opening edge of the door opening 13, and the weather strip 15 seals between the opening edge of the door opening 13 and the outer edge of the door 14.

  The roof 4 extends in the front-rear direction of the vehicle body 2 to form left and right outer edges of the roof 4, and extends substantially horizontally with roof side rails 18 and 18 supported on the upper edge of the side wall 3, The roof panel 19 includes a roof panel 19 that is installed on the left and right roof side rails 18 and 18 and that forms the center side of the roof 4 in the width direction of the vehicle body 2. The roof side rail 18 includes a rail outer panel 21 and a rail inner panel 22 that form a hollow closed section, and a rail reinforcing panel 23 that is sandwiched between the panels 21 and 22 and reinforces the panels 21 and 22. And.

  The roof side rail 18 constitutes an upper opening edge portion of the door opening 13, and an upper portion of the weather strip 15 is fixed to a lower end edge portion of the roof side rail 18. The upper portion of the weather strip 15 has a base portion 26 that is fitted and fixed to the lower edge of the roof side rail 18 and a lip that integrally projects from the base portion 26 toward the interior of the vehicle compartment 5 in a substantially horizontal direction. 27.

  The vehicle 1 includes a curtain shield airbag device 29. Hereinafter, the airbag device 29 will be described.

  A roof lining 30 is provided along the lower surface of the roof 4 so as to form the upper surface of the vehicle compartment 5. A central side 31 of the roof lining 30 in the width direction of the vehicle body 2 extends substantially parallel to the roof panel 19 and in the horizontal direction. Further, the left and right outer edge portions 32 of the roof lining 30 integrally extend so as to incline downward from the left and right outer edge portions of the central portion side 31 toward the side wall 3 of the vehicle body 2. That is, the transition part from the said center part side 31 to each outer edge part 32 is a mountain-fold shape. The roof lining 30 is made of resin, and the center side 31 and the outer edge portions 32 are integrally formed by injection molding.

  Each outer edge 32 of the roof lining 30 is elastically connected to the rail inner panel 22 of the roof side rail 18 by a plurality (four) of connecting tools 33 in the front-rear direction of the vehicle body 2. The upper lip 27 of the weather strip 15 is lightly pressed against the lower surface of the extended edge of each outer edge 32 of the roof lining 30.

  A bent portion 34 is formed between the center portion 31 of the roof lining 30 and the left and right outer edge portions 32 so as to form a convex arc shape upward. Specifically, the bent portion 34 is a transition portion from the central portion side 31 to each outer edge portion 32, and is formed in each of the left and right mountain-folded portions of the roof lining 30. The bent portion 34 has a substantially constant cross-sectional shape and is formed in a continuous bead shape so as to extend linearly over substantially the entire length of the roof lining 30 in the front-rear direction of the vehicle body 2. The roof lining 30 includes the bent portion 34, and the thickness of each portion is substantially the same.

  In a space 36 between each roof side rail 18 in the roof 4 and each outer edge 32 of the roof lining 30, a folded air bag 37 and a large amount of gas are instantaneously generated by explosion to generate this gas. An inflator 38 for supplying the air bag 37 into the air bag 37, and a support member 40 attached to the rail inner panel 22 of the roof side rail 18 by a fastener 39 to support the air bag 37 and the inflator 38. Yes.

  When the vehicle 1 collides, the inflator 38 is exploded by a detection signal of a sensor (not shown) that detects the collision, and a large amount of gas is instantaneously generated, and this gas is supplied into the airbag 37. Then, the airbag 37 is deployed and inflated, and pushes the outer edge 32 of the roof lining 30 downward.

  Then, by the pushing of the airbag 37, the connection of the outer edge portion 32 of the roof lining 30 to the rail inner panel 22 by the connecting members 33 is elastically relaxed, and is indicated by a one-dot chain line in FIG. As described above, the lip 27 of the weather strip 15 is elastically bent downward, and the outer edge 32 of the roof lining 30 is moved downward.

  Then, through the gap 43 formed between the outer edge 32 of the roof lining 30 that has moved downward as described above and the roof side rail 18 that is the outer edge of the roof 4, the airbag 37 is It further expands toward the interior of the lower compartment 5. Then, the inflated airbag 37 curtain shields the side wall 3 of the side wall 3 of the vehicle body 2 so that a secondary collision of the occupant on the side wall 3 is prevented and the occupant is protected. The

  Here, as described above, the bent portion 34 that protrudes upward is formed between the center portion side 31 and the outer edge portion 32 in the width direction of the vehicle body 2 of the roof lining 30.

  Therefore, when the outer edge 32 of the roof lining 30 is moved downward by being pushed by the inflating airbag 37 at the time of the collision of the vehicle 1, stress concentration occurs in the bent portion 34. The bent portion 34 is easily bent. Therefore, as shown by the one-dot chain line in FIG. 1, the outer edge 32 of the roof lining 30 is smoothly rotated downward A about the bent portion 34 thus bent, that is, smoothly moved downward. Therefore, the airbag 37 is smoothly inflated into the passenger compartment 5 through the gap 43, and the protection of the occupant by the airbag 37 is more reliably achieved.

  Further, in the above case, the roof lining 30 is made of resin and is formed by injection molding. However, the space between the central side 31 and the outer edge 32 of the roof lining 30 is thin as in the prior art. Therefore, when the roof lining 30 is injection-molded, the bottom surface between the central portion 31 and the outer edge 32 of the roof lining 30 is “sinked”. It is possible to prevent defects such as “”. Therefore, as described above, even when the airbag 37 is smoothly inflated toward the inside of the compartment 5 at the time of the collision of the vehicle 1, the appearance of the compartment 5 is well maintained.

  Moreover, since the bent portion 34 is formed to be convex upward, the recessed space 45 on the lower surface side of the bent portion 34 makes the vehicle compartment 5 appear wider. Therefore, the appearance of the passenger compartment 5 is also improved.

  Further, as described above, the roof lining 30 includes the bent portion 34, and the thicknesses of the portions are substantially the same. Therefore, when the roof lining 30 is injection-molded, the sink portion or the like is added to the bent portion 34 or the like. The occurrence of defects is more reliably prevented. Therefore, the appearance of the passenger compartment 5 is kept better.

  Further, as described above, the bent portion 34 is a transition portion to the outer edge portion 32 extending downward from the central portion side 31 extending substantially horizontally in the roof lining 30. It is formed in each left and right mountain fold shape part.

  Here, if the bent portion 34 is formed in the middle portion 31 in the width direction of the vehicle body at the central portion side 31 and the outer edge portion 32 of the roof lining 30, the bent portion 34 is easily noticeable in appearance. Since it formed in the mountain-fold shape part of the roof lining 30 as mentioned above, it is suppressed that the said bending part 34 gives discomfort to the appearance of the compartment 5. FIG. Therefore, also in this respect, the appearance of the passenger compartment 5 is well maintained.

  In addition, although the above is based on the example of illustration, the cross section of the said bending part 34 may be a triangular top part shape, and may be an inverted U-shape. Further, the bent portion 34 may be formed only in a part of the roof lining 30 in the front-rear direction of the vehicle body 2, or a plurality of the bent portions 34 may be formed discontinuously.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Side wall 4 Roof 5 Car compartment 13 Door opening 14 Door 15 Weather strip 18 Roof side rail 19 Roof panel 29 Air bag apparatus 30 Lou-flying 31 Central part side 32 Outer edge part 34 Bending part 36 Space 37 Air bag 38 Inflator 43 Clearance 45 Recessed space A Downward rotation

Claims (1)

A resin roof lining provided along the lower surface of the roof of the vehicle body so as to form a vehicle upper surface inside the vehicle body, and an air bag interposed between the outer edge of the roof and the outer edge of the roof lining. And the airbag that inflates due to a vehicle collision pushes the outer edge of the roof lining downward, and the outer edge of the roof lining moves downward by the pushing. In a curtain shield airbag device in a vehicle in which a gap generated between the outer edge of the roof is passed and the airbag is further inflated toward the interior of the vehicle interior below the airbag,
A curtain shield airbag device for a vehicle, wherein a bent portion that protrudes upward is formed between a center portion side and an outer edge portion in the vehicle body width direction of the roof lining.

Images