JP2007223551A - Vehicular exterior member mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular exterior member mounting structure preventing damage to an exterior member by a simple structure in light collision. <P>SOLUTION: The vehicular exterior member mounting structure is constituted such that it is provided with a bumper 100 formed with an outer surface part 110 exposed to an outer side of the vehicle; the exterior member 200 arranged adjacent to the bumper 100; an locking part 213 formed projectedly inside a vehicle body from the exterior member 200 by a material having elasticity and having a claw part 213a at a distal end; a locking symmetrical part 130 provided on an end 120 adjacent to the locking part 213 of the exterior member 200 in the bumper 100, engaged with the claw part 213a of the locking part 213 and formed with a surface part opposed to the locking part 213 and arranged with a gap on at least a part thereof; and a rigidity reduction part 131 provided in the surface part of a target part 130 to be locked, having at least a part arranged so as to be opposed to the locking part 213 and reducing surface rigidity of the surface part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle exterior member mounting structure for mounting an exterior member such as a grill to a vehicle bumper.

A vehicle such as an automobile is provided with a bumper face constituting a part of the outer surface of the vehicle and a front grill (radiator grill) at a front end portion thereof. A front grill is known in which a latching portion formed integrally with the front grille is latched on a bumper face and mounted (for example, see Patent Document 1).
Also, in order to prevent damage to the front grille due to input received from the bumper face when the bumper face is retracted due to a slight collision, the vehicle is provided with a box-shaped mounting portion on the bumper face side, and this There is known a configuration in which the clip portion is hooked and the attachment portion is deformed when the bumper face is retracted to release the clip portion (for example, see Patent Document 2).
JP 2003-104142 A JP 2004-306855 A

Since the mounting structure of the front grille having the box-shaped mounting portion described above is complicated in the structure and shape of the mounting portion, the manufacture of the bumper face and the mold for molding the bumper face become complicated.
The subject of this invention is providing the exterior member attachment structure for vehicles which prevents the damage of the exterior member at the time of a light collision with a simple structure.

The present invention solves the above-described problems by the following means.
According to a first aspect of the present invention, there is provided a bumper having an outer surface portion exposed to the outside of a vehicle, an exterior member disposed adjacent to the bumper, and an inner side of the vehicle body from the exterior member by an elastic material. And a hooking portion having a claw portion at a tip portion thereof, and an end portion adjacent to the hooking portion of the exterior member in the bumper, the hooking portion of the hooking portion being hooked And at least a part of which is provided with a surface portion that is opposed to and spaced from the hook portion, and is provided in the surface portion of the hook portion, A vehicle exterior member mounting structure including a rigidity lowering portion, a part of which is disposed to face the hooking portion and reduces the surface rigidity of the surface portion.

According to a second aspect of the present invention, in the vehicle exterior member mounting structure according to the first aspect, the rigidity reduction portion is arranged such that a position of the claw portion in the width direction partially overlaps the hooking portion. The vehicle exterior member mounting structure is characterized by the above.
According to a third aspect of the present invention, in the vehicle exterior member mounting structure according to the first or second aspect, the surface portion of the engagement target portion is a traveling direction of the vehicle with respect to the outer surface portion of the bumper. The claw portion is hooked to the edge of the bumper, and the rigidity reduction portion has an opening formed through the surface portion. It is the exterior member attachment structure for vehicles characterized by having.
According to a fourth aspect of the present invention, in the vehicle exterior member mounting structure according to the third aspect, the exterior member is a grill provided on the upper side of the bumper and provided with the hooking portion at a lower end thereof. The vehicle exterior member mounting structure characterized by the above.

According to the present invention, the following effects can be obtained.
(1) In the surface portion of the hook target portion, at least a part is disposed so as to face the hook portion, and a rigidity reduction portion that reduces the surface rigidity of the surface portion is provided, and between the surface portion and the hook portion. By providing the interval, the surface portion of the engagement target portion is deformed when the bumper is moved due to the collision and the engagement with the claw portion is released, so that the exterior member can be prevented from being damaged. Moreover, since such a rigidity reduction part can be easily provided by forming an opening in a surface part or reducing thickness, the exterior member mounting structure for vehicles is simplified.
(2) Since the rigidity reduction part is arranged so that the position of the claw part in the width direction partially overlaps with the latching part, when the exterior member is attached to the bumper, the claw part becomes the rigidity reduction part. It is prevented from hanging and workability is improved.

  An object of the present invention is to provide a vehicle exterior member mounting structure that prevents damage to an exterior member at the time of a light collision with a simple structure, and is provided at the upper end portion of the bumper face, and the latch portion of the front grille is latched. The flange part is provided with an opening partly arranged in the width direction with respect to the latching part to reduce the rigidity, and when the bumper face is retracted, the flange part is deformed to engage the latching part. Resolve by releasing the stop.

Hereinafter, a front grille mounting structure which is an embodiment of a vehicle exterior member mounting structure to which the present invention is applied will be described.
FIG. 1 is an external view showing a state in which a bumper face and a front grill of a vehicle are viewed from the front side of the vehicle.
2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a sectional view of the bumper face taken along the line III-III.

The front grill mounting structure of this embodiment includes a bumper face 100 and a front grill 200.
The bumper face 100 is attached to the lower side of the front grill 200 and a headlamp unit (not shown) at the front end of the vehicle. The bumper face 100 is attached to a vehicle body (not shown) via a beam phosphorus reinforcement (not shown) provided on the inner surface side thereof and extending substantially in the vehicle width direction.
The bumper face 100 includes an outer surface portion 110, a grill mounting portion 120, a flange portion 130 (see FIGS. 2 and 3), a grill side support portion 140, a radiator opening 150, and a fog lamp mounting portion 160, which are made of, for example, polypropylene. It is integrally formed by injection molding using (PP) resin.
The outer surface portion 110 is a surface portion exposed to the outer surface side when the vehicle is used.
The grill mounting portion 120 is an area formed by denting the central portion in the vehicle width direction downward at the upper end portion of the bumper face 100, and is the portion on which the front grill 200 is mounted.

As shown in FIG. 2, the flange portion (latching target portion) 130 is a substantially flat portion formed in the grill mounting portion 120 so as to protrude from the upper edge of the outer surface portion 110 toward the rear side of the vehicle. Thus, the outer surface portion 110 is formed so as to protrude upward in a stepped manner with respect to the rear end portion. The rear end edge portion of the flange portion 130 is formed in a planar shape whose end surface is substantially orthogonal to the longitudinal direction of the vehicle.
As shown in FIG. 3, the flange portion 130 extends over substantially the entire length of the grill mounting portion 120 in the vehicle width direction, and is formed in a belt shape having a substantially constant width (dimension in the longitudinal direction of the vehicle).

Further, the flange portion 130 is provided with an opening 131 formed so as to penetrate the flange portion 130 in the vertical direction.
The opening 131 functions as a rigidity reduction portion that partially reduces the surface rigidity of the flange portion 130. As shown in FIG. 3, the opening 131 is arranged close to the vehicle front side of the flange portion 130, and the pair of openings 131 are arranged substantially parallel to the extending direction of the flange portion 130 when viewed from above the vehicle. And a rectangular shape having a pair of short sides arranged substantially parallel to the longitudinal direction of the vehicle.
Further, as shown in FIG. 2, the end surface of the opening 131 on the vehicle front side is formed in a planar shape arranged substantially orthogonal to the vehicle front-rear direction, and the lower end of the end surface on the vehicle rear side is It is offset rearward from the upper end and is formed in a convex shape.

The grille side support portions 140 are provided on both sides of the upper end portion of the bumper face 100 with the grill mounting portion 120 sandwiched in the vehicle width direction, and brackets protruding from both end portions in the vehicle width direction of the front grill 200 are illustrated in FIG. This is the part that is fixed by bolts and nuts.
The radiator opening 150 is formed in the lower part of the bumper face 100 at the center in the vehicle width direction, and introduces running wind into a radiator (not shown) provided inside the vehicle body.
The fog lamp mounting portion 160 includes an opening in which a fog lamp unit which is an auxiliary lighting device (not shown) is mounted, and is disposed on both sides of the radiator opening 150 in the vehicle width direction.

The front grill (radiator grill) 200 is an exterior member including a frame body 210 and a molding 220.
The frame 210 is a part that functions as a main body of the front grill 200, and is formed, for example, by injection molding a resin material having elasticity.
The molding 220 is a decorative member attached to the front end along the outer peripheral edge of the frame 210. For example, after molding a resin material, the molding 220 is subjected to surface treatment such as chrome plating or painting. Is.
As shown in FIG. 2, the frame body 210 includes a front end surface portion 211, a molding support portion 212, a latching portion 213, and ribs 214 and 215 that are integrally formed.

The front end surface portion 211 is formed to be continuous with the front end edge portion of the frame body 210 and is a substantially planar portion formed by projecting downward from here, and the lower end portion thereof is the flange portion 130 of the bumper face 100. And facing each other with a gap.
The molding support part 212 is formed to protrude from a substantially central part in the vertical direction of the front end surface part 211 to the vehicle front side, and the molding 220 is fixed to the upper surface part thereof.

The hooking portion 213 is formed continuously with the lower end portion of the front end surface portion 211 and is a band plate-like portion formed so as to protrude from the rear side of the vehicle, and at the front end portion thereof, the flange portion 130 of the bumper face 100 is formed. A hook-like claw portion 213a that is hooked to the rear end edge portion is formed.
The latching part 213 is inclined and arranged so that the rear end part is lower than the front end part. Further, the lower surface portion of the latching portion 213 is opposed to the upper surface portion of the flange portion 130 of the bumper face 100 with an interval, and this interval is narrower on the vehicle rear side than the front side with the inclination described above. It has become.
The claw portion 213 a is formed so as to protrude from the lower surface portion at the rear end portion of the latching portion 213, and a surface portion that is substantially in surface contact with the end surface of the rear end edge portion of the flange portion 130 of the bumper face 100 is formed.

In addition, the latching portion 213 is disposed offset so that the position in the width direction of the claw portion 213a partially overlaps the opening 131 formed in the flange portion 130.
As shown in FIG. 3, one of the edge portions of the opening 131 along the vehicle front-rear direction is arranged at a substantially central portion in the vehicle width direction of the latching portion 213, and the other is the latching portion 213. It is arrange | positioned in the position which does not overlap with an up-down direction.

  The ribs 214 and 215 are provided between the lower surface portion of the molding support portion 212 and the lower surface portion of the hooking portion 213 and between the rear surface portion of the front end surface portion 211 and the upper surface portion of the hooking portion 213, respectively. It is a substantially triangular gusset-shaped stiffening part. The lower end edge portion of the rib 214 is disposed with a space from the upper surface portion of the flange portion 130 of the bumper face 100.

Next, the effect of the above-described embodiment will be described in comparison with a comparative example described below.
FIG. 4 is a cross-sectional view of a front grill mounting structure that is a comparative example of the present invention.
The comparative front grille mounting structure includes a bumper face 300 and a front grill 400.
The bumper face 300 includes an outer surface portion 310 and a flange portion 330 that are substantially similar to the outer surface portion 110 and the flange portion 130 in the bumper face 100 of the embodiment, but the flange portion 330 is like the opening 131 of the embodiment. No opening (rigidity reduction part) is provided, and it has a substantially uniform thickness over the entire surface.

The front grill 400 does not have a portion corresponding to the molding 220 of the front grill 200 of the embodiment, and is substantially constituted only by the frame body 410.
The frame 410 includes a front end portion 411, a latching portion 412, and ribs 413 and 414.
The front end 411 is a portion formed along the edge of the frame 410 on the vehicle front side.
The latching portion 412 is formed so as to protrude from the lower surface side of the frame body 410, and a claw portion 412 a that latches with the rear end edge portion of the flange portion 330 is formed at the tip thereof.

  Among the portions connecting the frame body 410 and the claw portion 412 a in the latching portion 412, the front portion 412 b has an upper end portion connected to the frame body 410 and a lower end portion in contact with the upper surface portion of the flange portion 330. It arrange | positions and it inclines and arrange | positions so that a lower end part may become a vehicle rear side rather than an upper end part. Further, a rear portion 412c formed continuously from the front portion 412b and connecting the lower end portion of the front portion 412b and the claw portion 412a is substantially in surface contact with the upper surface portion of the flange portion 330. Are arranged along.

  In the above-described comparative example, when the bumper face 300 moves to the vehicle rear side with respect to the vehicle body due to a slight collision, the front grill 400 has a claw portion 412a at the rear end edge of the flange portion 330 of the bumper face 300. By being pressed rearward, the latching portion 412 is pulled rearward, and the frame 410 may be deformed or damaged, or the latching portion 412 may be damaged.

On the other hand, according to the present embodiment, since the opening 131 is formed in the flange portion 130 of the bumper face 100 to partially reduce the rigidity, when the bumper face 100 is retracted, the area around the opening 131 of the flange portion 130 is reduced. The area is bent, and the latching between the flange part 130 and the latching part 213 is released by this deformation.
FIG. 5 is a cross-sectional view showing a state when the bumper face is retracted due to a light collision in the front grille mounting structure of the present embodiment, and shows a cross section corresponding to FIG. 2 described above.

As shown in FIG. 5, the flange portion 130 of the bumper face 100 has lower surface rigidity than the other portions in the peripheral portion of the opening 131, so that the flange portion 130 is moved in the front-rear direction of the vehicle by the retreat of the bumper face 100. When a load in the compressing direction is applied, it buckles and deforms around the opening 131, deforms into a curved surface that protrudes upward, and protrudes upward. The rear end portion of the flange portion 130 that latches with the portion 213a is displaced downward with respect to the claw portion 213a. At this time, the portion protruding above the flange portion 130 is accommodated in an interval provided in advance between the flange portion 130 and the latching portion 213.
And by this displacement, the latching of the flange part 130 and the latching part 213 is cancelled | released, and the front grill 200 will be in the state which can be relatively moved with respect to the bumper face 100 in the front-back direction of a vehicle.
FIG. 6 is a perspective view of the latching portion between the flange portion and the latching portion in the present embodiment. As shown in FIG. 6, the region 130a on the vehicle rear side with respect to the opening 131 of the flange portion 130 is likely to be displaced downward (sagging), and this displacement also acts in the direction of promoting the above-described latch release. To do. In FIG. 6, the amount of sagging is shown enlarged for easy understanding.

As described above, according to this embodiment, the following effects can be obtained.
(1) By forming the opening 131 in the flange portion 130 of the bumper face 100 and partially reducing the surface rigidity, the flange portion 130 is easily buckled and deformed by a compressive load received during a light collision, and the flange portion 130. Since the gap is provided between the hook portion 213 and the hook portion 213, the above-described buckling deformation of the flange portion 130 is not hindered by the front grill 200 side.
As a result, even when the bumper face 100 is retracted with respect to the front grill 200 during a light collision, the hook portion 213 is released from the hook portion 213a by buckling deformation of the flange portion 130. Thus, damage to the front grill 200 caused by input from the bumper face 100 can be prevented with a simple structure.
(2) Since the opening 131 of the flange portion 130 is offset from the hooking portion 213 in the width direction of the claw portion 213a by about half the claw width, the claw portion 213a when the front grill 200 is mounted. Can be prevented from accidentally engaging with the opening 131, and the rigidity of the flange portion 130 in use can be ensured.
(3) Since the flange portion 130 is formed integrally with the bumper face 100 and the hook portion 213 and the claw portion 213a are formed integrally with the frame 210 of the front grill 200, the number of parts is reduced, and the vehicle manufacturing process Can be simplified.

(Modification)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the technical scope of the present invention.
(1) Although an Example attaches a grill to a bumper, for example, this invention is not restricted to this, It can apply also to the other exterior member with which a bumper is mounted | worn. For example, the present invention can be applied to a fog lamp cover that is mounted when the fog lamp is not mounted on the fog lamp mounting section, and a cover member that is provided around the fog lamp cover when the fog lamp is mounted.
(2) In the embodiment, the opening is formed in the flange portion as the rigidity reduction portion, but the present invention is not limited to this, and the rigidity may be reduced by other methods. For example, when the thickness is partially reduced or a stiffening means such as a rib is provided in another portion, this may be omitted in the rigidity reduction portion.

It is an external view which shows the state which looked at the bumper face and front grille in the front grille attachment structure which is an Example of this invention from the vehicle front side. It is the II-II part arrow sectional drawing of FIG. It is a III-III part arrow directional view of the bumper face of FIG. It is sectional drawing in the front grille attachment structure which is a comparative example of this invention. It is sectional drawing which shows the state at the time of the light collision in the front grille attachment structure of FIG. It is a perspective view of the latching location in the front grille attachment structure of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Bumper face 110 Outer surface part 120 Grill mounting part 130 Flange part 131 Opening 200 Front grill 210 Frame 213 Latch part 213a Claw part 220 Mole

Claims (4)

A bumper formed with an outer surface exposed to the outside of the vehicle;
An exterior member disposed adjacent to the bumper;
A hooking portion that is formed by protruding from the exterior member to the inside of the vehicle body by an elastic material, and has a claw portion at its tip portion;
The bumper is provided at an end adjacent to the latching portion of the exterior member, and the claw portion of the latching portion is latched, and at least a part thereof is opposed to the latching portion and spaced apart. A hooking target portion formed with a spaced-apart surface portion;
A vehicle exterior member mounting structure comprising: a rigidity reduction portion that is provided in the surface portion of the hooking target portion, at least a part of which is disposed facing the hooking portion, and reduces the surface rigidity of the surface portion. In the vehicle exterior member mounting structure according to claim 1,
The vehicle exterior member mounting structure, wherein the rigidity reduction portion is arranged such that a position in the width direction of the claw portion partially overlaps the hooking portion. In the vehicle exterior member mounting structure according to claim 1 or 2,
The surface portion of the hooking target portion protrudes substantially along the traveling direction of the vehicle with respect to the outer surface portion of the bumper and is formed integrally with the bumper. It is something to be hung
The vehicle exterior member mounting structure, wherein the rigidity reduction portion has an opening formed through the surface portion. In the vehicle exterior member mounting structure according to claim 3,
The exterior member mounting structure for a vehicle, wherein the exterior member is a grill disposed on an upper side of the bumper and provided with the hooking portion at a lower end thereof.

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