JP2006282092A - Shock absorbing structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shock absorbing structure for a vehicle capable of reducing the number of parts and man-hour for assembling, and decreasing cost. <P>SOLUTION: In the shock absorbing structure for the vehicle, an airbag device is arranged between a roof side rail and a roof lining. An extending portion 14 extending from the roof side rail toward the roof lining 9 back surface side is provided at an upper end portion of a mounting member 12 mounting the airbag device, and a shock absorbing portion 14b is provided on the extending portion 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an impact absorbing structure for a vehicle when an airbag device is disposed on a roof side portion of an automobile.

In recent years, from the viewpoint of occupant protection, an airbag device against a shock load from the side surface, that is, a so-called curtain airbag device may be disposed on the roof side portion of an automobile.
The curtain airbag device is configured by a tube-shaped bag body, which is stored in a folded state on the indoor side of the inner panel of the vehicle body, and the indoor side of the bag body is covered with roof lining. An inflator as a gas generating means is provided in the vicinity of the bag body, and when the gas generated by the inflator is filled into the bag body, the bag body expands to push open the roof lining, It is designed to be deployed laterally.

  In addition to the curtain airbag device, an impact absorbing component for absorbing an impact is disposed on the roof side portion. 7 to 9 show the arrangement structure of a conventional curtain airbag device and shock absorbing parts. The roof side portion 101 of the vehicle body 100 is formed in a closed cross-sectional structure by a roof side rail outer panel 103 and a roof side rail inner panel 104 that are joined to a side edge portion of the roof panel 102. Between the roof side rail outer panel 103 and the roof side rail inner panel 104, an outer reinforcement 105 and an inner reinforcement 106 are disposed with their flange portions joined to each other. A weather strip 107 is attached to the lower flange joint. Further, a roof lining 108 is attached to the indoor side of the roof side portion 101 and the roof panel 102 as an interior decoration material.

In such a space between the roof side portion 101 and the roof lining 108, a curtain airbag device 109 and an impact absorbing component 110 are disposed. The curtain airbag device 109 includes a folded airbag body 111 and a flat bracket 112 to which the airbag body 111 is attached. The bracket 112 is connected to the roof side rail via a bolt 113 and a nut 114. The curtain airbag device 109 is attached to the roof side portion 101 by being screwed to the inner panel 104. The bracket 112 is provided with a claw portion 112a that engages with the roof side rail inner panel 104 on both sides, and a projecting piece 112c that has an attachment hole 112b through which the bolt 113 passes. The airbag main body 111 is attached to a hole 112d formed in the center portion of the bracket 112 by a rivet.
On the upper side of the curtain airbag device 109, an impact absorbing component 110 is attached to the roof side rail inner panel 104, and the roof side rail inner panel 104 enters the indoor side against an impact load from the outside. (See Patent Documents 1 and 2).
JP 2002-225658 A JP 2000-85514 A JP 2004-98770 A

  However, according to the conventional structure, since the bracket 112 and the shock absorbing component 110 of the curtain airbag device 109 are separately attached to the roof side rail inner panel 104, the number of components increases and the man-hour and cost increase.

  An object of the present invention is to solve the above-mentioned problems, to reduce the number of parts, and to provide a shock absorbing structure for a vehicle that can reduce the number of assembling steps and reduce the cost.

In order to solve the above problems, the present invention provides a shock absorbing structure for a vehicle in which an airbag device is disposed between a roof side rail and a roof lining. An extension portion extending from the side rail toward the roof lining side is provided, and an impact absorbing portion is provided on the extension portion.
In the present invention, the shock absorbing portion is formed by bending the upper end portion of the mounting member at a substantially right angle with respect to the mounting surface of the roof side rail to which the mounting member is mounted, and the roof is formed at the tip of the shock absorbing portion. A bent portion extending along the back side of the lining is provided.
Further, according to the present invention, flanges are provided at both side edges of the impact absorbing portion of the mounting member, and a bead portion is provided at least at the tip of the impact absorbing portion.
Still further, the present invention resides in that a weakened portion is provided in the impact absorbing portion of the mounting member.
Further, the present invention resides in that at least the flange portion of the impact absorbing portion of the mounting member is formed by being bent in a direction parallel to or away from the airbag body of the airbag device.

  As an effect of the present invention, an extension part is provided on a mounting member for attaching an airbag device, and an impact absorbing part is provided on the extension part. Can be planned. Since the extension part of the attachment member is used as the shock absorbing part, it is possible to reduce the weight of the attachment member and adjust the shock absorbing force. Further, the impact absorbing portion has a reinforcing effect on the attachment portion of the airbag device in a normal state, and can effectively absorb the impact when an impact force is applied. Since flanges are provided at both side edges of the shock absorbing part of the mounting member and a bead part is provided at least at the tip of the shock absorbing part, deformation prevention and improvement of shock absorbing efficiency when assembling the airbag device Can be achieved. Furthermore, since the fragile portion is provided in the shock absorbing portion of the mounting member, the shock absorbing power of the mounting member can be improved. Since at least the flange of the shock absorbing part of the mounting member is bent in the direction parallel to or away from the airbag body of the airbag device, the airbag is prevented from being damaged or damaged by the edge of the mounting member when the airbag is deployed. can do.

Embodiments shown in the drawings will be described in detail below with reference to the drawings.
1 is a partially enlarged view showing a shock absorbing structure for a vehicle according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a perspective view showing a bracket for attaching an airbag device. .
It is.

  In FIG. 1 to FIG. 3, reference numeral 1 denotes a roof side portion provided on the upper side of the interior side surface of the vehicle body 2, which is formed by a roof side rail outer panel 3 and a roof side rail inner panel (roof side rail) 4 to have a closed sectional structure Has been. The left and right roof side rail outer panels 3 have upper flange portions 3a joined to side edge portions 5a of the roof panel 5 to form both sides of the roof portion. The roof side rail outer panel 3 and the roof side rail inner panel 4 are joined together by spot welding or the like at the upper flange portions 3a and 4a and the lower flange portions 3b and 4b to form a hollow closed sectional structure. ing. Between the roof side rail outer panel 3 and the roof side rail inner panel 4, the outer reinforcement 6 and the inner reinforcement 7 are mutually connected to the flange portions 6a and 7a, and the flange portions 6b and 7b are mutually connected to the roof side rail outer panel. 3 and the upper side flange portions 3a, 4a of the roof side rail inner panel 4 and the lower side flange portions 3b, 4b are joined and arranged by spot welding w or the like.

  A weather strip 8 as a sealing material is attached to the joint portion of the lower flange portions 3b, 6b, 7b, 4b to form the upper edge portion of the side door opening. A roof lining 9 is attached to the indoor side of the roof side portion 1 and the roof panel 5 as an interior decoration material.

In the space S between the roof side portion 1 and the roof lining 9, an airbag device 11 including an airbag body 10 such as a curtain airbag is provided. The airbag device 11 includes an airbag body 10 and a bracket 12 as an attachment member, and is attached to a roof side rail inner panel 4 constituting the roof side portion 1 via the bracket 12. As shown in FIG. 3, the bracket 12 includes a flat plate-like attachment portion 13 for attaching the airbag body 10, and an extension portion 14 provided to extend to one side of the attachment portion 13 and functioning as an impact absorbing member. It consists of
Engaging portions 13a bent at right angles, that is, on the side of the roof side rail inner panel 4 are provided at both left and right ends of the mounting portion 13, and the engaging portions 13a are formed in a hook shape. As shown in FIG. 4, the bracket 12 is assembled to the roof side rail inner panel 4 by engaging the engaging portion 13 a with an engagement hole 4 c formed in the roof side rail inner panel 4. The airbag main body 10 is assembled in a mounting hole 13b formed in the central portion of the mounting portion 13 on a surface facing the roof lining 9 side of the mounting portion 13 via a mounting bracket 15 such as a rivet.

The extension part 14 is bent at a substantially right angle after extending the mounting surface 14a by a fixed length L1 and parallel to the mounting part 13, and the shock absorbing part 14b is formed between the roof side rail inner panel 4 and the roof lining 9. It extends by a length L2 corresponding to the distance, and its tip end portion 14c extends a certain length L3 along the back surface of the roof lining 9 (see FIG. 2).
A hole 17 through which the bolt 16 is passed is formed in the center of the mounting surface 14a. The bolt 16 is inserted into the hole 17 and is passed through the bolt hole 4d formed in the roof side rail inner panel 4, so that the roof The side rail inner panel 4 is screwed onto a nut 16a welded in advance to the back surface.

  As shown in FIG. 3, the impact absorbing portion 14b is formed to have a gradually wider tip side with respect to the mounting surface 14a, and is transferred to the tip portion 14c. A slot 19 for forming the fragile portion 18 is formed in the plate surface of the shock absorbing portion 14b. The long hole 19 is formed from the roof side rail inner panel 4 toward the roof lining 9 and can be set in size and number as required. Flange portions 14d are provided on both side edges of the mounting surface 14a, and the flange portions 14d are formed by being bent in a direction parallel to or away from the airbag device 11. Flange portions 14e are also provided on both side edges of the shock absorbing portion 14b, and the flange portions 14e of the shock absorbing portion 14b are also formed by being bent away from the airbag body 10 as shown in FIG. ing. Further, the flange portion 14d of the mounting surface 14a and the flange portion 14e of the shock absorbing portion 14b may be formed in a semicircular arc shape as shown in FIG. 6 (in the illustrated example, the flange portion 14e is shown). .

  A bead 20 is formed along the roof lining 9 at the distal end portion 14c, and the distal end portion 14c is rigid (see FIG. 3).

  According to the above shock absorbing structure of the vehicle, when an excessive shock load is applied from the side surface of the vehicle body 1, the airbag main body 10 is deployed indoors and the shock absorbing portion 14b is deformed to absorb the shock. Since the fragile portion 18 is provided in the impact absorbing portion 14b, even when an impact is applied to the roof lining 9 from the indoor side, the impact absorbing portion 14b is easily deformed to reduce the excessive impact. Since the front end portion 14c is in contact with the roof lining 9 by the surface, the load can be absorbed by the front end portion 14c supporting the roof lining 9 while the shock absorbing portion 14b is deformed. Flange portions 14d are provided on both side edge portions of the mounting surface 14a, and the flange portions 14d are formed by being bent in a direction parallel to or away from the airbag body 10, so that the airbag is damaged when the airbag is deployed. There is no fear. Flange portions 14e are also provided on both side edge portions of the shock absorbing portion 14b, and these flange portions 14e are also formed by being bent away from the airbag body 10, so that the airbag may be damaged when the airbag is deployed. Absent.

  The present invention is not limited only to the above-described embodiment. For example, the bracket 12 is not limited to a metal one, and may be a resin-molded one. It can be applied to either the front seat side or the rear seat side. In addition, the size or shape of the shock absorbing portion 14b can be set as appropriate. In addition, it goes without saying that the present invention can be appropriately modified and implemented within the scope not changing the gist of the present invention.

It is a conceptual diagram which removes a roof lining and shows the impact-absorbing structure of the vehicle by embodiment of this invention. It is the sectional view on the AA line of FIG. It is a perspective view which shows the bracket which attaches the airbag main body of FIG. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is sectional drawing which shows the modification of the shape of the flange part of an impact-absorbing part. It is a conceptual diagram which shows the conventional shock absorption structure of a vehicle. It is the DD sectional view taken on the line of FIG. It is a perspective view which shows the bracket which attaches the airbag apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roof side part 2 Car body 3 Roof side rail outer panel 4 Roof side rail inner panel 5 Roof panel 6 Outer reinforcement 7 Inner reinforcement 8 Weather strip 9 Roof lining 10 Air bag main body 11 Air bag main body apparatus 12 Bracket (attachment member) )
13 Mounting part 14 Extension part (Shock absorbing member)
14a Mounting surface 14b Shock absorbing portion 14c Tip portion 14d, 14e Flange portion 15 Mounting bracket 18 Fragile portion 19 Elongated hole 20 Bead

Claims (5)

A shock absorbing structure for a vehicle in which an airbag device is disposed between a roof side rail and a roof lining, and extends from a roof side rail toward a roof lining back side at an upper end portion of a mounting member to which the airbag device is attached. An impact absorbing structure for a vehicle, characterized in that an extension portion is provided and an impact absorbing portion is provided in the extension portion. The upper end portion of the mounting member is bent at a substantially right angle with respect to the mounting surface of the roof side rail to which the mounting member is mounted, and the shock absorbing portion is formed, and the front end portion of the shock absorbing portion is along the roof lining side. 2. The shock absorbing structure for a vehicle according to claim 1, further comprising a bent portion that extends. The shock absorbing structure for a vehicle according to claim 2, wherein flanges are provided at both side edges of the shock absorbing portion of the mounting member, and a bead portion is provided at least at the tip of the shock absorbing portion. 4. The impact absorbing structure for a vehicle according to claim 2, wherein a weakened portion is provided in the impact absorbing portion of the mounting member. 5. The shock absorbing structure for a vehicle according to claim 3, wherein at least a flange portion of the shock absorbing portion of the mounting member is formed in a direction parallel to or away from the airbag body of the airbag device.

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