JP5146039B2 - Reinforcement structure of automotive front fender - Google Patents

Description

    The present invention relates to a reinforcing structure that reinforces the stiffness of an automobile front fender.

Conventionally, as shown in FIG. 7, a front fender 1 that covers a side surface of a front part of a vehicle body has a plurality of coupling parts 100, 100,. It is attached so as to cover the side of the front part of the vehicle body.
In general, in a vehicle such as a semi-bonnet type minivan shown in FIG. 7, the front fender 1 has a vertical width wider than that of a front fender of a passenger car, and its vertical cross-sectional shape is a curved shape that bulges outward. In order to set the vehicle interior width to the maximum with respect to the determined vehicle body width as compared with that of the passenger car, a substantially vertical flat shape is provided as shown in FIG. The front fender 1 shown in the figure has an almost vertical plane as a whole although its upper, middle and lower portions are slightly inclined.

  By the way, in the front fender of a passenger car having a curved longitudinal section that bulges to the outside of the vehicle, the minivan can exhibit sufficient tension rigidity against an external force acting so that a person contacts and pushes from the outside of the vehicle. In the front fender 1, the vertical cross section is a vertical plane, so it cannot be said that the rigidity is sufficient with respect to the external force (the white arrow in FIG. 8). There was a problem.

As a fender reinforcement structure, in the case of a rear fender, as described in Patent Document 1 below, the outer surface of the pillar pillar reinforcement of the rear pillar, which is a skeleton member on the rear side of the vehicle body, and the beltline reinforcement that extends rearward from the rear pillar. It has been proposed to reinforce the rear fender by securing the inner surface of the rear fender to the outer surface of the vehicle.
Japanese Utility Model Publication No. 6-3777

However, the front fender 1 that is detachably installed on the vehicle body cannot be fixed to the skeleton member of the vehicle body as in the structure of Patent Document 1. If the plate thickness of the front fender 1 is increased in order to strengthen the tension rigidity of the front fender 1, an increase in the weight of the vehicle body and an associated cost increase, and the productivity of the front fender that is press-molded decreases.
Therefore, the present invention has been made to provide a reinforcing structure that reinforces the tension rigidity of the front fender without increasing the plate thickness.

The present invention is directed to a front fender of an automobile in which a front side surface of a vehicle body is covered and an outer peripheral edge is coupled to the vehicle body side. a reinforcing member that extends in a strip shape provided, reinforcing members, together with allowed to bind its front and rear ends of the outer peripheral front edge and the outer peripheral rear edge of each front fender, the intermediate portion before and after the reinforcing member, the upper edge The upper and lower edge portions are adhered to the vehicle inner surface of the front fender with an adhesive at a plurality of locations at intervals in the front-rear direction and at the upper and lower edge portions alternately in the front- rear direction .
Since the reinforcing member is provided along the vehicle inner surface of the front fender, the tension rigidity of the front fender can be strengthened against the external force acting from the outside of the vehicle by the reinforcing member. Since not attached to the body of the frame member directly the interior surface of the front fender, it affects the desorption of the front fender does not.

A foamed adhesive is used as the adhesive.
By using the foamed adhesive, the adhesive easily expands in the gap between the reinforcing member and the inner surface of the fender, so that both can be securely bonded.

The front fender has an outer peripheral front edge formed with a lamp-corresponding portion that is recessed backward corresponding to the rear edge of the headlamp installed on the front surface of the vehicle body. A reinforcement that reinforces the periphery is installed on the inner side, and the reinforcing member has a front end coupled to the reinforcement, a rear end coupled to a rear edge of the front fender, and an intermediate portion disposed on the inner surface of the front fender. (Claim 3).
The reinforcing member can be easily coupled to the reinforcement provided at the front outer periphery of the front fender without providing a connecting portion for the reinforcing member at the front outer periphery of the front fender.

The reinforcing member is formed into cross-sectional hat shape opening toward the vehicle exterior side, the front end of the upper edge portion and lower edge portion bonded to the outer peripheral front edge or the reinforcement member of the front fender, after the reinforcing member The connecting portion formed at the end is bent at the rear edge of the front fender and is connected to the rear edge flange projecting toward the vehicle interior.
The cross-sectional hat-shaped reinforcing member is sufficiently rigid even if it has a small and narrow width, and is suitable for reinforcing the front fender.

The reinforcing member is lightened by providing a plurality of punched holes.
The weight of the reinforcing member can be reduced. The external force is assumed to be an external force pressed by a human hand, and the strength of the reinforcing member is sufficient.

The reinforcing member is attached to a front fender having a substantially vertical plane and detachably attached to the vehicle body.
The vertical plane front fender has insufficient tension rigidity and can be suitably reinforced by the reinforcing member.

An embodiment in which the present invention is applied to a front fender of a vehicle such as a minivan will be described. The front fender is a symmetrical structure, and one structure will be described. As shown in FIG. 1, the front fender 1 has a shape covering the front side surface of the vehicle body, and its vertical dimension is set larger than that of the front fender of a passenger car. The general part 10 of the front fender 1 that forms the front outer surface of the vehicle body is a plane whose vertical cross-sectional shape is substantially vertical.

The front fender 1 is formed with a notch having a substantially U-shaped cross-section opening forward at an outer peripheral front edge 11 forming an outer peripheral edge so that a side portion of the headlamp unit 4 of the vehicle is fitted. A corresponding portion 11a is formed. A connecting flange 111 is formed at the rear vertical edge of the lamp corresponding portion 11a so as to be bent in a substantially Z-shaped horizontal section and displaced to the vehicle inner side than the general portion 10 of the front fender 1 (see FIG. 2).
The lower half portion of the outer peripheral front edge 11 corresponds to the side portion of the front bumper 5 of the vehicle, and the lower half portion is provided with an attachment portion 100 that is coupled to the front bumper 5.

The front edge of the outer periphery 12 of the front fender 1 has a gentle front-down slope along the opening side edge of the engine room of the vehicle body, and is behind the middle protrusion 13 that covers the lower end of the front pillar 6. Is formed substantially horizontally along the lower edge of the fixed window opening 7 of the vehicle body.
The front half of the outer peripheral upper edge 12 and the lower edge of the projecting portion 13 are provided with a plurality of attachment portions 100, 100,... That are coupled to the upper edge of the apron member of the vehicle body and the periphery of the fixed window opening 7, respectively.

  A rear edge flange 141 that is bent into the vehicle interior is provided on the outer peripheral rear edge 14 of the front fender 1 along the front edge of the front door opening 8 of the vehicle body (see FIG. 3). The rear edge flange 141 is formed with a plurality of attachment portions 100, 100 that connect the rear edge flange 141 to the lower half of the front pillar that forms the front edge of the front door opening 8 of the vehicle, at the upper end and in the middle of the top and bottom. .

  Further, the front fender 1 has a plurality of mounting portions 100, 100,... At the front and rear intermediate positions of the arch-shaped outer peripheral lower edge 15 forming the front wheel house of the vehicle body and at the lower end.

The inner surface of the general part 10 of the front fender 1 extends in the form of a belt in the middle of the upper and lower sides along the front and rear direction, and extends between the coupling flange 111 of the outer peripheral front edge 11 and the rear edge flange 141 of the rear edge 14. The reinforcing member 2 is installed so as to be bridged.

  As shown in FIG. 1 to FIG. 3, the reinforcing member 2 is made of a metal plate, has a shallow cross-sectional substantially hat shape that opens toward the inside of the vehicle, and includes a back wall portion 20, an upper edge portion 21, and a lower edge portion 22. Yes. The front end 24 of the reinforcing member 2 is joined by spot welding SP with the front ends of the upper edge 21 and the lower edge 22 overlapped with the front edge flange 111 of the front fender 1 from the inside of the vehicle. It should be noted that the coupling end of the coupling flange 111 and the reinforcing member 2 is covered with a side rear edge of the headlamp unit 4.

  The rear end portion 25 of the reinforcing member 2 is formed with a connecting portion 251 that is bent from the end of the rear wall portion 20 toward the vehicle interior corresponding to the rear edge flange 141 of the front fender 1. The rear end portion 25 of the reinforcing member 2 is joined by spot welding SP with the joining portion 251 overlapped with the rear edge flange 141 of the front fender 1 in the front-rear direction.

  Further, the reinforcing member 2 is formed with a plurality of enlarged portions with a slightly enlarged vertical width at the upper edge portion 21 and the lower edge portion 22 at intervals in the front and rear. It is bonded to the inner surface of the fender 1. In addition, the adhesion part to the front fender 1 of the upper edge part 21 and the lower edge part 22 is set alternately in the front-back direction.

As the adhesive 26, a foaming adhesive is used which is obtained by adding a special foaming agent to a urea resin or phenol resin adhesive and foaming and curing by heat. The reinforcing member 2 is welded to the front edge flange 111 and the rear edge flange 141 of the front fender 1 at the front end 24 and the rear end 25 , and the upper edge portion 21 and the lower edge portion of the reinforcement member 2 are previously dried by heat drying in the painting process. The adhesive 26 adhered to the material 22 is foam-cured and bonded.

  Further, the reinforcing member 1 is formed with a plurality of long holes 23 in the back and forth direction at intervals in the back and forth direction of the back wall portion 20 to reduce the weight.

  In the front fender 1, the upper edge 12, the rear edge 14, and the joint portions 100, 100,... Of the end thereof are bolted to the upper edge of the apron member that is the skeleton member of the vehicle body, the lower half of the front pillar 6, Or they are connected by clamping. Further, the attachment portions 100, 100,... Of the lower half portion of the front edge 11 and the lower edge 15 are fastened to the side portion of the front bumper 5 and the fender liner in the wheel house.

According to the present embodiment, the front and rear ends 24 and 25 are welded to the front and rear edges 111 and 141 at the upper and lower intermediate positions of the front fender 1, and the front and rear intermediate portions are bonded to the inner surface of the fender (26, 26). Since the reinforcing member is provided, the tension rigidity of the general portion 10 of the front fender 1 is strengthened, and the front fender 1 does not bend and does not bend even if a human hand or the like comes into contact with it and is pushed to the inside of the vehicle.
Moreover, since the front fender 1 does not couple | bond the vehicle inner surface and the reinforcement member 2 with the frame member of a vehicle, there is no problem in the attachment or detachment performance of the front fender 1.

  The reinforcing member may have a relatively narrow vertical width and is lightened by providing a plurality of punched holes 26, 26,. Also in this way, the reinforcing member 2 can sufficiently exert a reinforcing effect against an external force due to contact of the human hand. Alternatively, the reinforcing member is not necessarily limited to the position shown in the figure, and can be directly reinforced at a site where problems are likely to occur by changing the installation.

  Further, since a foamed adhesive is used for the adhesive 26, the adhesive 26 expands and hardens so that the vehicle inner surface of the front fender 1 and the adhesive portion of the reinforcing member 1 are bonded to each other in the vehicle width direction without any gap. The bending of the fender 1 can be prevented.

Next, another embodiment of the present invention will be described with reference to FIGS. The basic structure of the present embodiment is almost the same as that of the previous embodiment, and differences will be mainly described. In the drawings, the same members are denoted by the same reference numerals, and description thereof is omitted.
Recently, automobiles tend to extend the design of the side surface of the headlamp unit 4 backward. In this case, the front edge 11 of the front fender 1 is formed with a lamp corresponding portion 11 b that opens forward and has a notch with a large depth corresponding to the side surface portion of the headlamp unit 4.

  Thus, in the front fender 1 in which the lamp corresponding part 11b is enlarged, the strength around the lamp corresponding part 11b is lowered. Therefore, in order to enhance the strength, the reinforcement 3 is installed on the inner side of the periphery of the lamp corresponding portion 11b so as to surround the lamp corresponding portion 11b. The reinforcement 3 is made of a metal plate having a shallow concavo-convex cross-sectional shape, and has a substantially U-shape opening forward.

  The reinforcement 3 has a front upper edge 31 welded to the upper edge flange of the upper edge 12 of the front fender 1 and a front lower end 32 welded to the mounting portion 100 at the lower end of the front edge 11 of the front fender 1. In addition, a plurality of inner peripheral edges along the peripheral edge of the lamp corresponding portion 11b are bonded to the vehicle inner surface of the front fender 1 with adhesives 33, 33, 33.

The front end 24 of the reinforcing member 2 that reinforces the tension rigidity of the fender at the upper and lower intermediate positions of the inner surface of the front fender 1 is connected to the reinforcement 3. The front end 24 of the reinforcing member 2 is spot welded SP with the upper edge 21 and the lower edge 22 overlapped on the plate surface of the reinforcement 3.
As in the previous embodiment, the rear end portion 25 and the middle of the reinforcing member 2 are welded to the rear edge 14 of the front fender 1 in the same manner as in the previous embodiment, and a plurality of middle portions are fronted with adhesives 26, 26, 26. It is bonded to the inner surface of the fender 1.

  According to this embodiment, the same effect as the previous embodiment is exhibited, and the reinforcing rigidity of the front fender 1 against external force due to human contact or the like is reinforced by the reinforcing member 2. Further, since the front end portion 24 of the reinforcing member 2 is coupled to the front end 11 of the front fender 1 by using the reinforcement 3, a dedicated portion for welding the front end of the reinforcing member 2 to the front edge 11 is not provided. Good.

  The present invention is not limited to a minivan, and may be applied to a vehicle type in which a front fender forms a vertical plane.

It is a side view of the front fender which shows the embodiment which applied the present invention to the front fender of a minivan. It is sectional drawing in the position which follows the II-II line | wire of FIG. It is sectional drawing in the position which follows the III-III line of FIG. It is sectional drawing in the position which follows the IV-IV line of FIG. It is a side view of the front fender which shows other embodiment of this invention corresponding to FIG. It is sectional drawing in the position which follows the VI-VI line of FIG. It is a principal part perspective view which shows the side part of the vehicle body front part of a minivan. It represents a problem of the conventional structure, and is a cross-sectional view at a position along the line VIII-VIII in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front fender 11 Outer periphery front edge 11b Lamp corresponding part 14 Outer periphery rear edge 141 Rear edge flange 2 Reinforcement member 21 Upper edge part 22 Lower edge part 23 Punching hole 24 Front end part 25 Rear end part 251 Joint part 3 Reinforcement 4 Headlamp

Claims (6)

In the front fender of a car that covers the front side of the car body and the outer periphery is connected to the car body side,
On the vehicle inner surface of the front fender, a reinforcing member extending in a belt shape in the front-rear direction along the vehicle inner surface is provided at the upper and lower intermediate positions,
The reinforcing member has its front end and rear end joined to the outer front edge and rear outer edge of the front fender, respectively, and the front and rear intermediate parts of the reinforcing member have their upper and lower edges in the front-rear direction. A reinforcing structure for a front fender for an automobile , wherein an upper edge portion and a lower edge portion are adhered to a vehicle inner surface of the front fender with an adhesive at a plurality of positions at intervals and alternately in the front- rear direction .   The reinforcing structure for a front fender for an automobile according to claim 1, wherein a foamed adhesive is used as the adhesive. The front fender has an outer peripheral front edge formed with a lamp-corresponding portion that is recessed backward corresponding to the rear edge of the headlamp installed on the front surface of the vehicle body. Reinforcement that reinforces the periphery is installed inside,
3. The automobile use according to claim 1, wherein the reinforcing member has a front end coupled to the reinforcement, a rear end coupled to a rear edge of the front fender, and an intermediate portion adhered to the inner surface of the front fender. Front fender reinforcement structure. The reinforcing member is formed into cross-sectional hat shape opening toward the vehicle exterior side, the front end of the upper edge portion and lower edge portion bonded to the outer peripheral front edge or the reinforcement member of the front fender, after the reinforcing member 4. A reinforcing structure for a front fender for an automobile according to claim 1, wherein a connecting portion formed at the end is bent at a rear edge of the front fender and is connected to a rear edge flange protruding to the inside of the vehicle.   The reinforcing structure for a front fender for an automobile according to claim 1, wherein the reinforcing member is light by providing a plurality of punched holes.   6. The reinforcing structure of a front fender for an automobile according to claim 1, wherein the reinforcing member is attached to a front fender which is substantially vertical and is detachably attached to a vehicle body.

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