JP4429217B2 - Rail garnish structure of roof side rail - Google Patents

Description

  The present invention relates to a structure of a rail garnish that covers a roof side rail provided with a vehicle air bag.

  As shown in FIGS. 7 and 8, conventionally, in a vehicle such as an automobile, on the vehicle side of the roof side rail 1 that forms the upper edge of the door openings D1 and D2 on the side surface of the vehicle body and the upper edge of the quarter window opening W. A curtain-type airbag 2 is installed along the tank, and gas is filled into the airbag 2 from the inflator 20 at the time of a vehicle collision or the like, and the airbag 2 is inflated and deployed to protect the occupant.

  The airbag 2 is attached along the longitudinal direction of the roof side rail 1 by fastening a plurality of tongue-shaped attachment portions (not shown) protruding from the upper edge of the airbag 2 to the side surface of the roof side rail 1 on the passenger compartment side. . Further, when the airbag 2 is attached to the roof side rail 1, a jump bracket 21 having a substantially L-shaped cross section made of a metal plate is integrally formed so as to be interposed between the airbag 2 and the roof side rail 1 at a predetermined position in the longitudinal direction. Installed on. The airbag 2 is attached to the side edge of the ceiling trim 3 constituting the ceiling of the passenger compartment, and to the upper edge of the door openings D1 and D2 and the upper edge of the quarter window opening W connected to the side edge. The rail garnish 4 is covered. Each rail garnish 4 is made of synthetic resin, and has a horizontally narrow plate-like main body portion 4a covering the lower side of the roof side rail 1 and a plurality of support portions 4b extending upward from the main body portion 4a. The fitting clip 5 at the upper end of the support part 4b is fitted and fixed in the fitting hole on the lower surface of the roof side rail 1, and the side edge of the ceiling trim 3 on the outside side of the ceiling trim 3 is fixed by the side edge inside the body part 4a. I try to support it.

  The jump bracket 21 is formed with a guide portion 22 at the lower end that extends obliquely downward toward the inside of the vehicle. When the airbag 2 is inflated and deployed, the side end of the ceiling trim 3 is pushed open by the guidance of the guide portion 22 of the jump bracket 21 and deployed into the vehicle interior (imaginary line in FIG. 8).

  By the way, in the conventional airbag 2, the deployment direction at the time of inflation and deployment is closer to the center of the vehicle compartment than the vertically lower position due to the restriction of the guide portion 22, and the occupant is caused by an inappropriate seating posture of the occupant or a large vehicle shake There is a possibility that the original performance of the airbag 2 may not be exhibited due to the inclination. For this reason, the airbag 2 needs to be deployed as much as possible along the side surface of the passenger compartment (the inner surface of the window glass G or the like). On the other hand, when the installation of the jump bracket 21 is abolished, the rail garnish 4 is arranged in the deploying direction of the airbag 2, and the airbag 2 hits the rail garnish 4 when inflated, and the upper end of the support portion 4b of the rail garnish 4 is fitted. There is a possibility that the clip 5 is detached from the roof side rail 1 and the rail garnish 4 is scattered.

As a conventional structure for preventing the scattering of pillar garnish etc. that covers the airbag when the airbag is deployed, a door part that is pushed and opened by the airbag that inflates to the main body of the garnish that covers the airbag is integrally formed. There has been proposed one in which the door is easily opened to deploy the airbag (see, for example, Patent Documents 1, 2, and 3 below). In another conventional structure, the garnish is fitted and fixed to a body body such as a pillar via a clip, and when the garnish is subjected to airbag inflation pressure, the body body and the clip are fitted or the garnish and the clip are fitted. The garnish body can be moved slightly toward the passenger compartment, and the garnish can be swung around the fitting part of the garnish and clip. It has been proposed to prevent the scattering and scattering (see, for example, Patent Documents 1, 4 and 5 below). As another conventional structure, a garnish main body and a fixing portion for fixing the main body to the vehicle body are hinged, and a bracket for attaching an airbag is provided on the fixing portion, and the fixing portion is fixed to the vehicle body. By doing so, the fixed part supports the garnish body and the airbag. When the airbag is inflated, the bracket is released from the fixed part, and the airbag is deployed by rotating the garnish body around the hinge joint. What has been proposed is proposed (for example, see Patent Document 6 below).
Japanese Patent Laid-Open No. 2001-114054 JP 2000-85513 A JP 2004-182027 A JP 2000-142301 A Japanese Patent No. 3465687 Japanese Patent No. 3218966

  However, like the garnishes of Patent Documents 1, 2, and 3, the door portion that opens when the airbag is inflated is provided on a part of the main body portion 4a of the rail garnish 4 formed of a narrow plate as shown in FIG. However, it is difficult in terms of the width dimension, and even if a door portion is provided, the door width becomes narrow, so that the opening dimension at the time of opening cannot be secured sufficiently. In addition, as in Patent Documents 1, 4, and 5, the fitting portion for extending the fitting portion between the garnish and the clip or the fitting portion between the clip and the vehicle body body between the garnish and the vehicle body is configured to be extendable. And the structure of the clip is complicated, and the cost of parts is high, which is uneconomical. Furthermore, the structure of the garnish of Patent Document 6 is complicated. Therefore, the present invention is simple in structure and low in cost, and the roof side rail of the vehicle can deploy the airbag along the side surface of the passenger compartment (window glass or the like) without disturbing the expansion of the airbag when the airbag is inflated. It is an object to provide a rail garnish structure.

The present invention provides a synthetic resin rail garnish which is provided at a lower position of a roof side rail to which an airbag is attached and which is connected to a side end of a ceiling trim of a passenger compartment to cover the roof side rail and the airbag from below. In
The rail garnish is composed of a plate-like main body that covers the roof side rail and the airbag from below, and a support that supports the main body from above,
The support portion includes an upper half portion that is fixed at the upper end to the roof side rail and extends substantially vertically downward, an inclined portion that is bent from the lower end of the upper half portion and extends obliquely downward on the outside of the vehicle, and a lower end of the inclined portion. Formed in series with the lower half that bends and extends in the vehicle exterior direction,
The terminal on the vehicle outer side of the lower half and the vehicle outer end of the main body are hinged to enable the main body to swing in the vertical direction, and the intermediate position in the width direction of the main body is set to the support portion. Engagement with the inclined part is possible by engaging means, and the end part on the vehicle interior side of the main body part is connected to the side end of the ceiling trim to hold the main body part in the roof side rail and airbag covering posture. Cough,
When the airbag is inflated, the body portion, which is pushed by the airbag and disengaged by the engaging means, swings downward about the hinge coupling portion to inflate the airbag downward. It is made to come out (Claim 1).
When the air bag is inflated, if the main part of the rail garnish and the side edge of the ceiling trim are pushed by the air bag, the engagement means between the main part and the support part will be released, and the main part will be the hinge connection part with the support part Since the side end of the ceiling trim moves downward at the same time, the airbag can be inflated and deployed along the side surface of the passenger compartment (the inner surface of the window glass). In this case, since the main body swings with little resistance to the pressure acting on the rail garnish from the airbag, the support portion does not come off the roof side rail, and there is no possibility that the rail garnish will scatter. In addition, since the entire main body is opened, a simple structure in which the main body and the support are hinge-coupled can be used. Further, since the support portion is provided with the inclined portion, the airbag does not hit the support portion when inflated and deployed downward.

The main body portion is formed with an abutment rib projecting upward at an intermediate position in the width direction and having an inclined surface corresponding to the inclined portion, and the inclined portion and the inclined surface can be engaged and disengaged by the engaging means. (Claim 2). The support part and the main body part can be easily engaged.

The main body part and the support part are separated from each other, and the surface of the main body part is covered with a flexible skin, and is extended vertically by the extension part of the skin extending from the surface of the main body part to the outside of the vehicle. The terminal on the vehicle outer side of the support portion and the end portion on the vehicle outer side of the main body portion that are closely opposed to each other are covered, and the end portion of the main body portion is hinged to the terminal of the support portion by an extension of the skin ( Claim 3). Since the skin is used as the hinge member, the structure can be simplified.

The body part and the support part are integrally formed, and the end part on the vehicle outer side of the body part and the terminal on the vehicle outer side of the lower half part of the support part are connected by a thin integral hinge. Are hingedly coupled to each other (claim 4). Rail garnish productivity is good.

  As said engaging means, a main-body part and a support part are engaged with a fastener tape so that engagement / disengagement is possible (Claim 5). As the engaging means, a locking claw is provided on one side of the main body portion and the support portion, and the locking claw is detachably engaged with a locking portion provided on the other side (Claim 6). ). Any means is suitable as an engaging means for holding the main body in a horizontal posture and opening the main body when the airbag is inflated.

  According to the rail garnish structure of the present invention, since the main body can be opened as a whole, the airbag is deployed along the side of the vehicle compartment (window glass, etc.) without disturbing the inflation of the airbag when the airbag is deployed. Can be made. In addition, a simple structure in which the main body portion and the support portion are hinge-coupled can be reduced in cost.

  An embodiment in which the present invention is applied to a rail garnish on the upper edge of a vehicle quarter window will be described. FIG. 1 shows a longitudinal section of an upper edge portion of a quarter window. A roof side rail 1 has a well-known structure and has a closed sectional structure composed of an inner panel 1a and an outer panel 1b, along a side surface 11 on the passenger compartment side. A folded curtain type airbag 2 is attached. The airbag 2 is attached in an inclined posture slightly obliquely downward toward the outside of the vehicle so that the direction of inflation when deployed is along the window glass G of the quarter window W.

  The side surface 11 of the roof side rail 1 on the passenger compartment side and the airbag 2 are trimmed side ends 31 that form a gentle inclination from the general portion of the ceiling trim 3 of the passenger compartment closer to the center of the passenger compartment toward the vehicle exterior diagonally downward. Covered up. The side end 31 of the ceiling trim 3 is located below the side surface 11 of the roof side rail 1 on the passenger compartment side, and the side end 31 and the window glass G of the quarter window W are separated from each other. A rail garnish 4 is provided so as to be shielded.

  As shown in FIGS. 1 and 2, the rail garnish 4 is made of a synthetic resin, a plate-like main body portion 4a that shields the gap, and a plurality of the main body portions 4a that support the main body portion 4a (see FIG. 1). In the example, it is composed of three support portions 4b. The main body 4a is formed in a long and narrow shape in the front-rear direction in accordance with the gap, and the front end, the rear end, and the front-rear intermediate portion are supported by the respective support portions 4b. On the back surface (upper surface) of the main body portion 4a, the abutment ribs 41 project from the positions where the support portions 4b are disposed. Each abutment rib 41 protrudes from the center position in the width direction of the back surface of the main body portion 4a, and each abutment rib 41 is provided with an inclined surface 410 that faces an inclined portion 43 of a support portion 4b described later.

Each support portion 4b has an upper half 42 that is fixed to the roof side rail 1 and extends substantially vertically downward, an inclined portion 43 that extends from the lower end of the upper half 42 and bends obliquely downward toward the vehicle exterior, and an inclined portion. 43 is formed in series with a lower half 44 that is bent from the lower edge of 43 and extends outwardly from the vehicle . The inclination angle of the inclined portion 43 with respect to the upper half portion 42 is approximately 135 degrees, and the bending angle of the lower half portion 44 with respect to the upper half portion 42 is substantially a right angle. Further, the lower half 44 is enlarged in the front-rear direction than the front-rear width of the upper half 42 and the inclined portion 43.

  A fitting clip 5 for fixing to the roof side rail 1 is provided at the upper end of the upper half portion 42 in the support portion 4b. As shown in FIG. 3, the fitting clip 5 is a conventionally known clip, and includes a pair of left and right engaging portions 51 projecting from the left and right sides, and a head 50 that tapers upward from the both engaging portions 51. And a pair of left and right clamping parts 52 provided below each locking part 51, and a metal piece formed in a substantially spade cross section. The clip 5 is fitted with the upper end of the upper half 42 between the left and right holding parts 52 and sandwiched by both the holding parts 52, and the pair of left and right tongues 53 cut and raised inwardly from the both holding parts 52 are raised. The half portion 42 is engaged with the square hole 421.

As shown in FIG. 1 and FIG. 2, the rail garnish 4 has a main body 4a whose surface (lower surface) is covered with a flexible skin 45 made of a woven fabric such as a knitted fabric. An extension 46 is provided that extends outward from the end 47 on the outside of the vehicle . Then, the terminal 48 on the vehicle exterior side of the support portion 4b and the end portion 47 on the vehicle exterior side of the main body portion 4a are made to face each other in the vertical direction, and the extension portion 46 of the skin 45 is folded upward and toward the vehicle interior. The outer end 47 and the terminal 48 on the vehicle outer side of the lower half 44 of the support 4b are integrally covered, and the folded end of the extension 46 is coupled to the terminal 48 of the support 4b. As a result, the body portion 4a and the support portion 4b are hingedly connected to the end portion 47 on the vehicle exterior side of the body portion 4a and the terminal 48 on the vehicle exterior side of the support portion 4b via the extension portion 46 of the skin 45. The main body 4a can swing up and down with respect to the portion 4b.

  Further, between the main body portion 4a and the support portion 4b, fastener tapes 6 as engaging means are respectively provided on the inclined surface 410 of the abutment rib 41 of the main body portion 4a and the inclined portion 43 of the support portion 4b facing this. Affixed.

  The rail garnish 4 fits the fitting clip 5 at the upper end of the support portion 4b into the fitting hole in the lower surface 12 of the roof side rail 1 from below, and the support portion 4b so that the upper half portion 42 takes a substantially vertical posture. Is fixed to the roof side rail 1, and the abutting rib 41 of the main body part 4a and the inclined part 43 of the support part 4b at a horizontal position where the main body part 4a is swung upward about the hinge coupling part 46 with the support part 4b. Are engaged with the fastener tape 6 so that the main body 4a is held in a horizontal position, and the gap between the side end 31 of the ceiling trim 3 and the window glass G of the quarter window W is shielded. At this time, the main body 4a supports the side end 31 of the ceiling trim 3 at the end on the vehicle compartment side.

According to the rail garnish 4 of the present embodiment, the upper half 42 of the support portion 4b whose upper end is fixed to the roof side rail 1 is set in a vertical posture, and the lower half extending outward from the vehicle substantially perpendicularly to the upper half 42. 43, the end portion 47 on the vehicle exterior side of the main body portion 4b is hinge-coupled, but the intermediate portion in the width direction of the main body portion 4a is engaged by the fastener tape 6, so that the main body portion 4a is supported by the support portion 4b. Can be supported in a balanced manner in a horizontal position.

  When the airbag 2 is inflated due to, for example, a side collision of the vehicle, the airbag 2 hits the side end 31 of the ceiling trim 3 located obliquely below the vehicle exterior and the vehicle compartment side of the main body portion 4a of the rail garnish 4 so as to push them down. To do. At this time, the engagement by the fastener tape 6 between the main body portion 4a and the support portion 4b of the rail garnish 4 is released, and the main body portion 4a generally swings downward about the hinge joint portion 46 with the support portion 4b. At the same time, the side end 31 of the ceiling trim 3 whose support is released moves downward to open the diagonally lower position of the airbag 2 outside the vehicle (the phantom line in FIG. 1), and the airbag 2 extends along the window glass G. Thus, it can be inflated and deployed slightly diagonally downward on the outside of the vehicle.

  When the airbag 2 is inflated, the rail garnish 4 is subjected to the pressure of inflation of the airbag 2 on the main body 4a. However, the rail garnish 4 has a coupling force in which the upper end of the support 4b is fixed to the roof side rail 1 by a metal fitting clip 5. In comparison, the engagement force between the main body portion 4a and the support portion 4b by the fastener tape 6 is low, and the main body portion 4a swings with little resistance under the pressure, so that the fitting clip 5 at the upper end of the support portion 4b is attached to the roof side. There is no possibility that the rail garnish 4 is scattered without being detached from the rail 1. Further, the support portion 4b is provided with an inclined portion 43 extending obliquely downward on the outside of the vehicle between the upper half portion 42 and the lower half portion 44 so that the support portion 4b does not protrude on the inflation path of the airbag 2. Therefore, the airbag 2 does not hit the support portion 4b during inflation, and the scattering of the rail garnish 4 is more reliably prevented.

  The rail garnish 4 has a structure in which the main body portion 4a and the support portion 4b are hinge-coupled to the support portion 4b fixed to the roof side rail 1 so that the entire main body portion 4a is opened. Since the extended portion 46 of the skin 45 that covers the surface of the portion 4a is used, the structure can be simplified and the cost can be reduced.

  In the above-described embodiment, the fastener tape 6 is used as the engagement means that detachably engages the main body 4a and the support 4b of the rail garnish 4 and supports the main body 4a in a horizontal posture. First, as shown in FIG. 4, a locking claw 49 is protruded at the intermediate position in the width direction on the back surface of the main body 4 a, and the locking claw 49 is engaged with and disengaged from the terminal on the vehicle compartment side of the lower half 44 of the support 4 b. You may make it latch so that it is possible. According to this, the latching claw 49 can be integrally formed with the main body portion 4a, and the productivity is good.

  Furthermore, in the above-described embodiment, the skin 45 that covers the main body 4a is used for hinge connection between the main body 4a and the support 4b, but not limited thereto, as shown in FIGS. The end 47 on the vehicle outer side of the main body 4a and the terminal 48 on the vehicle outer side of the lower half 44 of the support 4b may be hinged by a thin integral hinge 46a. According to this, the main-body part 4a and the support part 4b can be shape-molded integrally (FIG.5 (b)), and productivity can be improved. Although the skin is not necessary, the surface of the main body 4a may be covered with the skin as necessary, for example, when the interior of the passenger compartment is given a high-class feeling.

  In addition to using the fitting clip 5 as a structure for fixing the upper end of the support portion 4b of the rail garnish 4 to the roof side rail 1, as shown in FIG. 6, on the upper end of the upper half portion 42 of the support portion 4b, A mounting portion 421 that is bent along the lower surface 12 of the rail 1 and has a screw through hole is provided. The mounting portion 421 is overlapped with the lower surface 12 of the roof side rail 1 and is screwed by a screw member N that passes through the screw through hole. You may fasten. In this case, if the main body 4a is opened with respect to the support 4b (the phantom line in FIG. 6), the screw member N can be easily fastened using a tool such as the driver E.

  The rail garnish structure of the present invention is not limited to the rail garnish positioned at the upper edge of the opening of the quarter window W, and may be applied to door openings (D1, D2 in FIG. 7) on the side surface of the passenger compartment.

It is a longitudinal cross-sectional view which shows the rail garnish structure of this invention. It is a disassembled perspective view of the said rail garnish. It is a disassembled perspective view which shows the attachment structure of the fitting clip to the upper end of the support part of the said rail garnish. FIG. 4 is a longitudinal sectional view of a rail garnish corresponding to FIG. 1, showing another rail garnish structure of the present invention, in which a main body and a support are engaged by a locking claw as an engaging means. . FIG. 5A is a longitudinal sectional view of a rail garnish in which a main body portion and a support portion are hinge-coupled by an integral hinge, corresponding to FIG. (B) is a longitudinal cross-sectional view at the time of mold forming. FIG. 5 is a longitudinal sectional view of a rail garnish corresponding to FIG. 1 and showing a rail garnish structure of the present invention, wherein the upper end of a support portion is screwed and fixed to a roof side rail. It is the schematic which shows the roof side of a vehicle interior. It is a longitudinal cross-sectional view which shows the conventional rail garnish structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roof side rail 2 Air bag 3 Ceiling trim 31 Side edge 4 Rail garnish 4a Body part 4b Support part 42 Upper half part 43 Inclination part 44 Lower half part 45 Skin 46 Hinge joint part (extension part of skin)
46a Hinge joint (integral hinge)
47 End of vehicle body outside of vehicle 48 End of vehicle outside of support 49 49 Claw (engagement means)
6 Fastener tape (engagement means)

Claims (6)

In a synthetic resin rail garnish that is provided at a lower position of a roof side rail to which an airbag is attached, is connected to a side end of a ceiling trim of a passenger compartment, and covers the roof side rail and the airbag from below.
The rail garnish is composed of a plate-like main body that covers the roof side rail and the airbag from below, and a support that supports the main body from above,
The support portion includes an upper half portion that extends substantially vertically downward with its upper end fixed to the roof side rail, an inclined portion that is bent from the lower end of the upper half portion and extends obliquely downward on the outside of the vehicle, and a lower end of the inclined portion. Formed in series with the lower half that bends and extends in the vehicle exterior direction,
The terminal on the vehicle outer side of the lower half and the vehicle outer end of the main body are hinged to allow the main body to swing in the vertical direction, and the intermediate position in the width direction of the main body is set to the support portion. Engagement with the inclined part is possible by engaging means, and the end part on the vehicle interior side of the main body part is connected to the side end of the ceiling trim to hold the main body part in the roof side rail and airbag covering posture. Cough,
When the airbag is inflated, the body portion pushed by the airbag and disengaged by the engaging means swings downward about the hinge coupling portion to inflate the airbag downward. A rail garnish structure for a roof side rail of a vehicle, characterized in that it can be extended. The main body portion is formed with an abutment rib projecting upward at an intermediate position in the width direction and having an inclined surface corresponding to the inclined portion, and the inclined portion and the inclined surface can be engaged and disengaged by the engaging means. The rail garnish structure of the roof side rail of the vehicle according to claim 1 fitted together. The main body part and the support part are separated from each other, and the surface of the main body part is covered with a flexible skin, and is extended vertically by the extension part of the skin extending from the surface of the main body part to the outside of the vehicle. The terminal on the vehicle outer side of the support portion and the end portion on the vehicle outer side of the main body portion that are close to each other are covered, and the end portion of the main body portion is hinged to the terminal of the support portion by the extension of the skin . The rail garnish structure of the roof side rail of the vehicle according to claim 1 or 2. Integrally molded with the body portion and the support portion, the support portion the body portion connects the exterior of the terminal of the lower half of the support portion end of the exterior of the body portion in the thin integral hinges A rail garnish structure for a roof side rail of a vehicle according to claim 1 , wherein the vehicle is hinge-coupled to the hinge .   5. A rail garnish structure for a roof side rail of a vehicle according to claim 1, wherein the main body portion and the support portion are detachably engaged with each other by a fastener tape as the engaging means.   The engaging claw is provided on either one of the main body part and the support part as the engaging means, and the engaging claw is detachably engaged with the engaging part provided on the other side. The rail garnish structure of the roof side rail of the vehicle as described in thru | or 4.

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