JP2010006277A - Side airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side airbag device which can obtain a more properly deploying mode of an airbag body by enhancing support rigidity when deploying the airbag body while guiding the deployment of the airbag body. <P>SOLUTION: A guide plate 5 having an inclined surface 51 inclined to the inside of a cabin R toward an upper side is arranged between a side 41 of a door trim 4 and an airbag module 12. In an upper part of the guide plate 5, an upper end opening/closing part 52 for opening together with an upper end closing part 42 is provided along a rear face of the upper end closing part 42 of the door trim 4. A hinge 53 is provided between the inclined surface 51 of the guide plate 5 and the upper end opening/closing part 52. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a side airbag device for an automobile.

  2. Description of the Related Art Conventionally, there has been proposed a side airbag device that protects an occupant's head and shoulders from colliding with a side surface of a passenger compartment during a side collision. In this side airbag device, an airbag module including a gas generator and an airbag body is arranged between a door inner panel and a door trim, and the folded air is generated by gas generated by the gas generator at the time of a side collision. The bag body is developed upward from the upper end of the door trim (see, for example, Patent Document 1).

In this case, the airbag module is shown housed in a case, and the opening / closing lid provided on the upper portion of the case is pushed open around the hinge portion when the airbag body is deployed. .
JP 2006-88731 A

  However, in the above-described conventional side airbag device, the case in which the airbag module is accommodated has an upper portion provided with an opening / closing lid and a lower portion in which the airbag module is accommodated separately. And while fitting the upper part of a case in the opening part formed in the upper end part of a door trim, the lower part of a case is couple | bonded with a door inner panel. At this time, the upper part of the case is connected to the lower part on the door trim side, but the upper part and the lower part are separated on the door inner panel side.

  For this reason, the deployment load generated when the airbag body is deployed acts on the upper part to push open the opening / closing lid, while the reaction force of the deployment load acts on the lower part of the case, resulting in the door trim being removed from the door inner panel. Along with the deformation in the away direction, both side surfaces of the case facing the outside of the vehicle interior also deform in the opening direction.

  Therefore, the rigidity that supports the reaction force that the airbag body deploys at the lower part of the case may be reduced, and an appropriate deployment mode of the airbag body may not be obtained.

  Therefore, the present invention provides a side airbag device capable of obtaining a more appropriate deployment mode of the airbag body by improving the support rigidity when the airbag body is deployed while guiding the deployment of the airbag body. The purpose is to obtain.

  In the first aspect of the invention, the door has a side portion along the door inner panel with an appropriate interval, and an upper end closing portion that bends toward the door inner panel at an upper portion of the side portion to close the inside of the door trim. Located in the space formed between the door trim that covers the vehicle interior side of the inner panel and the side and upper end closing part of the door trim and the door inner panel, the airbag body pushes and opens the upper end closing part of the door trim in an emergency. A side airbag device having a built-in airbag module that extends upward, and has an inclined surface that is inclined upward toward the vehicle interior between the side portion of the door trim and the airbag module. Then, a guide plate fixed to the door trim or door inner panel is disposed, and the upper portion of the guide plate is arranged along the back surface of the upper end closing portion of the door trim. An upper end opening / closing portion that extends and opens together with the upper end closing portion is provided, and a hinge portion that serves as an opening center of the upper end opening / closing portion is provided between the inclined surface of the guide plate and the upper end opening / closing portion. Features.

  The invention according to claim 2 is characterized in that a vertical rib for filling a gap between the guide plate and the door trim is provided on one of the guide plate and the door trim.

  The invention according to claim 3 is characterized in that the vertical rib is formed by recessing the guide plate toward the interior of the vehicle interior.

  In the invention of claim 4, the other of the guide plate and the door trim is provided with a lateral rib that forms a lattice with the vertical rib while filling a gap between the guide plate and the door trim. Features.

  The invention according to claim 5 is characterized in that a positioning portion for defining a relative position between the door trim and the guide plate is provided between the vertical rib and the horizontal rib.

  According to the first aspect of the invention, when the airbag body is deployed, the airbag body can be smoothly deployed and guided by the inclined portion of the guide plate, and the upper end of the door trim is closed by the smooth deployment of the airbag body. Smooth opening of the part can be promoted. Further, when the airbag body is deployed, the upper end opening / closing portion is integrally provided via the hinge portion from the guide plate fixed to the door trim, so that the deployment load of the airbag body is released from the upper end opening / closing portion to the guide plate. And can be supported by the guide plate. Thereby, it can suppress that the deployment load of an airbag main body deform | transforms in the direction which a door inner panel and a door trim leave | separate mutually, and the more suitable deployment mode of an airbag main body can be obtained.

  According to the second aspect of the present invention, the load acting on the guide plate when the airbag main body is deployed can be supported by the door trim via the vertical rib, so that the deformation of the guide plate is suppressed and the airbag main body is deployed more smoothly. be able to.

  According to the invention of claim 3, since the vertical rib can be formed integrally with the guide plate, the number of parts can be reduced and the assembling work can be facilitated.

  According to the invention of claim 4, the load acting on the guide plate when the airbag body is deployed can be supported by the door trim via the lateral rib, and the lateral rib and the longitudinal rib form a lattice shape, thereby The support rigidity of the guide plate can be further increased.

  According to the invention of claim 5, since the positioning portion for determining the relative position between the door trim and the guide plate is provided between the vertical rib and the horizontal rib, the workability of assembling the door trim and the guide plate is improved. Can do.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings. 1 is a front view of a sashless door incorporating a side airbag device according to an embodiment of the present invention as viewed from the inside of the vehicle interior, and FIG. 2 is an enlarged cross-sectional view taken along line II-II in FIG. 3 is an enlarged cross-sectional view taken along the line III-III in FIG. 1, FIG. 4 is a front view of the guide plate as viewed from the vehicle interior with the door trim removed, and FIG. 5 shows the airbag body in a deployed state. FIG. 3 is an enlarged cross-sectional view corresponding to FIG. 2.

  As shown in FIG. 1, the side airbag device 1 according to the present embodiment is an upper portion that is close to the rear of the sashless door (hereinafter simply referred to as a door) 2 in the front-rear direction (left-right direction in FIG. 1). It is provided in the inside.

  The door 2 includes a door outer panel (not shown), a door inner panel 3 disposed at a predetermined interval in the interior (left side in the figure) of the door outer panel of the door outer panel, as shown in FIG. And a door trim 4 that covers the inner side of the inner compartment 3 of the vehicle compartment R.

  On the upper part of the door trim 4, there are a side part 41 along the door inner panel 3 with an appropriate interval, and an upper end closing part 42 that bends from the upper end part of the side part 41 toward the door inner panel 3 and closes the inside of the door trim 4. , Is formed. A predetermined space portion S is formed between the side portion 41 and the upper end closing portion 42 of the door trim 4 and the door inner panel 3. In the space portion S, the airbag main body 11 pushes the upper end closing portion 42 of the door trim 4 and opens the airbag module 12 that expands upward in the event of an emergency, whereby the side airbag device 1 is configured.

  2 and 3 show the stored state of the airbag body 11. In the retracted state, the airbag body 11 is in a folded state. FIG. 5 shows the deployed state of the airbag body 11. By introducing the gas generated in the inflator 13 (see FIG. 4) into the airbag main body 11, the folded airbag main body 11 expands, pushes the upper end closing portion 42 open, and expands upward. In the figure, reference numeral 13a denotes a gas supply tube that allows the inflator 13 and the airbag body 11 to communicate with each other.

  Here, in this embodiment, as shown in FIGS. 2 and 3, an inclined surface 51 is formed between the side portion 41 of the door trim 4 and the airbag module 12 so as to incline in the passenger compartment R upward. A guide plate 5 is disposed, and the guide plate 5 is fixed to the door trim 4.

  That is, the lower end portion 5a of the guide plate 5 is fixed to the boss portion 43 protruding from the door trim 4 with a predetermined protrusion amount via the bolt B1, and the upper portion from the lower end portion 5a becomes the inclined surface 51. The upper end portion 51 a of the inclined surface 51 is in contact with the back surface of the side portion 41 of the door trim 4.

  Further, an outer plate 6 is disposed at a predetermined interval on the outer side of the passenger compartment R (right side in the figure) of the guide plate 5, and the guide plate 5 and the outer plate 6 constitute a case 7 for housing the airbag module 12. It is. In this embodiment, the guide plate 5 and the outer plate 6 are press-molded with an iron plate (for example, a thickness of 0.6 mm to 1.2 mm).

  The outer plate 6 is fastened together with the guide plate 5 at the lower end 6a with the above-described bolt B1, and is bent into a cross-sectional crank shape from the lower end 6a along the lower side of the airbag module 12 and the outside of the passenger compartment R. It has been launched. The upper end portion 6b of the outer plate 6 is fixed to the boss portion 82 of the mounting plate 8 engaged with the back surface of the tip end portion of the upper end closing portion 42 via the locking portion 81 via the bolt B2.

  And the upper part of the guide plate 5 is extended along the back surface of the upper end closing part 42, and the upper end opening-and-closing part 52 which opens with the upper end closing part 42 at the time of expansion | deployment of the airbag main body 11 is provided in the extension part. . A hinge 53 is provided between the inclined surface 51 of the guide plate 5 and the upper end opening / closing portion 52 as a center of opening of the upper end opening / closing portion 52.

  The hinge portion 53 is formed by recessing the guide plate 5 outward in the vehicle compartment R so as to have a semicircular cross section. On the back surface of the door trim 4 facing the hinge portion 53, the upper end closing portion 42 is opened. A central recess 44 is formed. Of course, the hinge part 53 and the recessed part 44 are formed in a straight line continuously in the vehicle front-rear direction within the range of the guide plate 5 as shown in FIG.

  Therefore, as shown in FIG. 5, when the airbag body 11 is deployed, the upper end opening / closing portion 52 of the guide plate 5 is moved together with the upper end closing portion 42 of the door trim 4 together with the hinge portion 53 and the concave portion with the release of the locking portion 81. 44 is pushed and opened with the center of opening.

  Further, the upper end closing portion 42 of the door trim 4 made of synthetic resin is inserted into a mounting hole 54 formed in the upper end opening / closing portion 52 of the guide plate 5 formed of an iron plate with a protruding portion 45a projecting from the back surface thereof. A tip 45 of the projection 45 a protruding from the mounting hole 54 is crushed by heat to provide a weld 45, and the upper end closing part 42 and the upper end opening / closing part 52 are integrated by the weld 45.

  Furthermore, in this embodiment, as shown in FIGS. 2 and 4, the guide plate 5 is provided with vertical ribs 9 that fill the gaps between the guide plate 5 and the door trim 4. Here, the vertical rib 9 is a projecting portion extending in the vertical direction, and the vertical rib 9 is formed by recessing the guide plate 5 inward of the vehicle interior R by press molding.

  As shown in FIGS. 3 and 4, the door trim 4 is provided with a horizontal rib 91 that fills a gap between the guide plate 5 and the door trim 4 and forms a lattice with the vertical rib 9 described above. Here, the horizontal rib 91 is a projecting portion extending in the vehicle front-rear direction, and the horizontal rib 91 is integrally injection-molded from the door trim 4.

  As shown in FIG. 4, a positioning portion 92 that determines the relative position between the door trim 4 and the guide plate 5 is provided between the vertical rib 9 and the horizontal rib 91. The positioning portion 92 is formed by cutting out the horizontal rib 91 at the portion where the vertical rib 9 and the horizontal rib 91 intersect with the width W of the vertical rib 9 (removal portion 92a), and the guide plate 5 and the door trim 4 are separated. When assembled, the vertical rib 9 is closely fitted to the cut portion 92a.

  As described above, according to the side airbag device 1 of the present embodiment, the guide plate 5 provided with the inclined surface 51 is disposed between the side portion 41 of the door trim 4 and the airbag module 12. When the bag body 11 is deployed, the airbag body 11 can be smoothly deployed and guided by the inclined surface 51. The smooth opening of the airbag main body 11 can promote the smooth opening of the upper end closing portion 42 of the door trim 4.

  Further, when the airbag main body 11 is deployed, the upper end opening / closing portion 52 is integrally provided from the guide plate 5 fixed to the door trim 4 via the hinge portion 53, whereby the deployment load of the airbag main body 11 is opened / closed at the upper end. The portion 52 can escape to the guide plate 5 and be supported by the guide plate 5. Thereby, it can suppress that the deployment load of the airbag main body 11 deform | transforms in the direction which the door inner panel 3 and the door trim 4 leave | separate mutually, and the appropriate deployment mode of the airbag main body 11 can be obtained.

  Furthermore, in this embodiment, since the load acting on the guide plate 5 when the airbag body 11 is deployed can be supported by the door trim 4 via the vertical ribs 9, the deformation of the guide plate 5 is suppressed and the airbag body 11 is further moved. It can be deployed smoothly.

  Furthermore, since the vertical ribs 9 are formed by recessing the guide plates 5, the vertical ribs 9 can be integrated with the guide plates 5, and the number of parts can be reduced and the assembling work can be facilitated.

  Further, since the horizontal rib 91 is provided together with the vertical rib 9, the load acting on the guide plate 5 when the airbag body 11 is deployed can be supported by the door trim 4 via the horizontal rib 91, and the horizontal rib 91 and the vertical rib 9 are supported. By forming a lattice shape, the support rigidity of the guide plate 5 by the door trim 4 can be further increased.

  Further, since the positioning portion 92 for determining the relative position between the door trim 4 and the guide plate 5 is provided between the vertical rib 9 and the horizontal rib 91, the assembly workability between the door trim 4 and the guide plate 5 is improved. be able to.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made. For example, the guide plate 5 may be fixed to the door inner panel 3 side without being fixed to the door trim 4 side, the vertical rib 9 protrudes from the door trim 4, and the horizontal rib 91 protrudes from the guide plate 5. May be.

It is the front view which looked at the sashless door incorporating the side airbag apparatus concerning one Embodiment of this invention from the vehicle interior side. It is an expanded sectional view along the II-II line in FIG. It is an expanded sectional view along the III-III line in FIG. It is the front view which removed the door trim concerning one Embodiment of this invention, and looked at the guide plate from the vehicle interior direction. FIG. 3 is an enlarged cross-sectional view corresponding to FIG. 2 showing a deployed state of the airbag main body according to the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side airbag apparatus 11 Airbag main body 12 Airbag module 2 Sashless door 3 Door inner panel 4 Door trim 41 Side part 42 Upper end closing part 5 Guide plate 51 Inclined surface 52 Upper end opening / closing part 53 Hinge part 9 Vertical rib 91 Horizontal rib 92 Positioning part S Space part R Car compartment

Claims (5)

A door trim that covers a vehicle interior side of the door inner panel, having a side portion along the door inner panel at an appropriate interval and an upper end closing portion that bends toward the door inner panel at the upper portion of the side portion and closes the inside of the door trim. An airbag module that is disposed in a space formed between the side and upper end closing portion of the door trim and the door inner panel, and in which an airbag main body pushes open the upper end closing portion of the door trim and expands upward in an emergency; A side airbag device with a built-in
Between the side portion of the door trim and the airbag module, a guide plate that has an inclined surface that inclines upward toward the vehicle interior and is fixed to the door trim or the door inner panel,
An upper end opening / closing portion that extends along the back surface of the upper end closing portion of the door trim and opens together with the upper end closing portion is provided on the upper portion of the guide plate,
A side airbag device, wherein a hinge portion serving as a center of opening of the upper end opening / closing portion is provided between the inclined surface of the guide plate and the upper end opening / closing portion.   The side airbag device according to claim 1, wherein one of the guide plate and the door trim is provided with a vertical rib that fills a gap between the guide plate and the door trim.   The side airbag device according to claim 2, wherein the vertical rib is formed by recessing the guide plate toward a vehicle interior.   4. The transverse rib that forms a lattice shape together with the vertical ribs is provided on the other of the guide plate and the door trim, and a gap between the guide plate and the door trim is filled. 5. Side airbag device.   The side airbag device according to claim 4, wherein a positioning portion that defines a relative position between the door trim and the guide plate is provided between the vertical rib and the horizontal rib.

Images