JP5951310B2 - Car body mounting structure of resin fender for vehicles - Google Patents

Description

  The present invention relates to a structure in which a fender is attached to a vehicle body, and more particularly to regulation of thermal expansion displacement outward in the vehicle width direction when the fender is made of resin.

  As a conventional structure for attaching a resin part to a vehicle body constituent member, for example, there is one disclosed in Patent Document 1. In this conventional structure, the upper end of the resin part (bumper side part) is fixed to the middle part of the vehicle body panel with a clip, and an integral hinge is provided at the lower end part of the resin bumper side part so that it can be bent. The hinge is bent and fixed to the lower end of the vehicle body panel with a fastening member.

JP 2001-26284 A

  By the way, since resin parts have a larger coefficient of thermal expansion than steel plate parts, when the bumper side part, which is a resin part, is attached to a vehicle body panel by the conventional structure, the attachment point increases as the temperature rises. The bent portion of the integral hinge that is farthest from the outermost portion extends most greatly. Therefore, when the resin part is attached to the vehicle body so as to be located on the outermost side in the vehicle width direction, for example, in the case of a front fender, the bent portion of the integral hinge is greatly displaced outward in the vehicle width direction. In this case, there is a risk of exceeding the full width regulation value of the vehicle body.

  In order to suppress the outward displacement in the vehicle width direction due to the thermal expansion, a special structure that makes the resin fender thick and restricts the displacement outward in the vehicle width direction is used. It is conceivable to change the material, but if this is done, the weight, cost and productivity will deteriorate.

  The present invention has been made in view of the above-described conventional situation, and it is possible to suppress the outward displacement in the vehicle width direction without requiring a change to a special material that is difficult to increase in thickness or thermally expand. It is an object to provide a vehicle body mounting structure for a resin fender for a vehicle that does not exceed the value.

The present invention fixes an upper portion of a resin fender to an upper portion of a vehicle body member, and an integral hinge integrally formed with a lower edge portion so that a flange portion can be bent via a thin portion at the lower edge portion. In the vehicle body mounting structure of the resin fender for vehicles to be attached to the lower part of the vehicle body member,
A steel plate stay is provided on the vehicle body member such that a lower portion thereof faces substantially downward, and the lower portion of the stay is sandwiched between a lower edge portion of the resin fender and a flange portion of the integral hinge, and the flange portion Attach the top of the stay to the stay ,
A protrusion is formed on the thin wall portion side of the flange, and the protrusion abuts on the inner surface in the vehicle width direction of the lower portion of the stay so as to be able to be displaced downward and not to be displaced outward in the vehicle width direction. It is characterized by being.

  In the present invention, since the lower portion of the extension part of the vehicle body member facing substantially downward is sandwiched between the lower edge part of the resin fender and the integral hinge, even if the resin fender thermally expands, the lower part of the extension part The lower edge of the resin fender is only allowed to be displaced downward, and is not allowed to be displaced outward in the vehicle width direction, so that the full width regulation value is not exceeded.

  In addition, the above-mentioned displacement restriction in the vehicle width direction is achieved without thickening the resin fender or changing to a special material that is difficult to thermally expand, increasing weight, cost, and production. There is no problem of sexual deterioration.

It is the perspective view which looked at the automobile by which the vehicle body attachment structure of the resin fender by Example 1 of the present invention was adopted from the diagonally left front. It is a disassembled perspective view of the said vehicle body attachment structure. It is a cross-sectional back view of the integral hinge part for demonstrating the effect of the said attachment structure. It is a side perspective view of the stay (extension part of a body member) of the attachment structure. FIG. 5 is a cross-sectional rear view of the mounting structure (a cross-sectional view taken along the line VV in FIG. 1).

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes an automobile to which the structure of this embodiment is applied. The front portion of the automobile includes a hood 3 that opens and closes the engine room 2, a front bumper 4 that constitutes a front wall of the engine room 2, an upper member 5 that is disposed on the left and right sides in the engine room 2, Resin left and right front fenders 10 and 10 are provided for covering the upper member 5 from the side and for covering the front wheel 9 from above.

  The upper member 5 is a cylindrical body in which the upper member inner 5a and the upper member outer 5b are abutted so as to form a closed cross section and the flange portions 5c and 5d are joined by spot welding.

  A wheel house member 8 is disposed in the engine room 2 so as to cover the front wheel 9 from the engine room side. The wheel house member 8 is connected to the lower flange portion 5d of the upper member 5 and a vehicle. It fixes so that it may span over the flange 4a of the upper side of the side member 4 arrange | positioned so that it may extend in the vehicle front-back direction in the width direction left and right side part.

  An upper flange 10b is bent at the upper edge portion 10a of the front fender 10 so as to extend substantially linearly in the vehicle longitudinal direction, and a rear flange 10c is formed at the rear edge portion so as to extend in the vertical direction. ing. The upper flange 10 b is bolted and fixed to the upper part of the upper member 5, and the rear flange 10 c is bolted and fixed to the lower part 6 a of the front pillar 6.

  Further, the lower edge portion 10d of the front fender 10 is formed in a substantially arc shape so as to match the upper edge shape of the front wheel 9. Reference numeral 10e denotes a notch formed in the front end of the front fender 10 so as to correspond to the side edge shape of the headlight 7.

  An integral hinge 12 is formed on the lower edge portion 10d of the front fender 10. The integral hinge 12 is formed by integrally forming a strip-like flange portion 12b on the lower edge portion 10d of the front fender 10 so as to be bent via a thin portion 12a.

  A fixing hole 12c for inserting the clip 11b is formed through the front end of the flange portion 12b. Further, a projection 12d is formed on the flange portion 12b on the thin-walled portion 12a side so as to be in contact with a lower portion 14b of a stay 14 described later.

  A steel plate stay 14 constituting an extension of the vehicle body member is attached to the lower corner portion of the upper member outer 5b. The stay 14 has a main body portion 14a that extends obliquely downward outward in the vehicle width direction from the corner portion, and a lower portion 14b that is bent so as to face downward following the main body portion 14a.

  The body portion 14a is formed with a mounting hole 14d for mounting the flange portion 12b of the integral hinge 12.

  Furthermore, three fixing pieces 14c are bent at the upper end of the main body portion 14a so as to form a substantially Y shape when viewed from the side, and the fixing pieces 14c sandwich the corner portion. The upper member outer 5b is disposed by spot welding or the like. Reference numeral 14e denotes a reinforcing bead portion. Further, the stay 14 can be integrally formed with a vehicle body member such as the upper member 5.

  The lower portion 14b of the stay 14 is sandwiched between the lower edge portion 10d of the front fender 10 and the flange portion 12b of the integral hinge 12, and the flange portion 12b is inserted into the mounting hole 14d from the fixing hole 12c. The clip 11b is fixed to the main body 14a of the stay 14. The outer surface in the vehicle width direction of the protrusion 12d of the integral hinge 12 is in contact with the inner surface in the vehicle width direction of the lower portion 14b of the stay 14.

  In attaching the front fender 10 to the vehicle body, the upper flange 10b and the rear flange 10c are bolted and fixed to the upper member 5 and the lower portion 6a of the front pillar 6, respectively. Subsequently, the flange portion 12b (see the two-dot chain line in FIG. 5) of the integral hinge 12 extending downward from the lower edge portion 10d of the front fender 10 is bent upward to sandwich the lower portion 14b of the stay 14 to fix the fixing hole 12c. The flange portion 12b is fixed to the main body portion 14a of the stay 14 by inserting and fitting the clip 11b into the mounting hole 14d. As a result, the outer surface in the vehicle width direction of the protrusion 12d of the flange portion 12b contacts the inner surface in the vehicle width direction of the lower portion 14b of the stay 14.

  In this embodiment, the lower portion 14b facing substantially downward of the stay 14 is sandwiched between the lower edge portion 10d of the front fender 10 and the flange portion 12b of the integral hinge 12, so that even if the front fender 10 is thermally expanded, Due to the lower portion 14b of the stay 14, the lower edge portion 10d is only allowed to be displaced downward, and not allowed to be displaced outward in the vehicle width direction (see the two-dot chain line in FIG. 3). Therefore, the lower edge portion 10d of the front fender 10 is hardly displaced in the vehicle width direction and does not exceed the full width regulation value.

  In addition, since only the protrusion 12d is brought into contact with the lower portion 14b of the stay 14, the sliding resistance when the front fender 10 is displaced downward is small, and the downward displacement is not hindered.

  The front fender 10 can be displaced outwardly in the vehicle width direction without changing the thickness of the fender to a special material that is difficult to thermally expand. There is no problem of sexual deterioration.

  In the embodiment, one set of integral hinges and stays is provided. However, the number of these sets is not limited, and of course, two or more sets may be provided. In the above embodiment, the front fender mounting structure has been described. However, the present invention can also be applied to a rear fender.

5 Upper member (body member)
10 resin front fender 10e upper part 10f lower part 12 integral hinge 14 stay (extension part)
14b bottom

Claims (1)

The upper part of the resin fender is fixed to the upper part of the vehicle body member, and the lower edge of the lower part of the vehicle body member is integrated via an integral hinge that is integrally formed with the lower edge part so that the flange part can be bent via a thin wall part. In the vehicle body mounting structure of the resin fender for vehicles to be attached to
A steel plate stay is provided on the vehicle body member such that a lower portion thereof faces substantially downward, and the lower portion of the stay is sandwiched between a lower edge portion of the resin fender and a flange portion of the integral hinge, and the flange portion Attach the top of the stay to the stay ,
A protrusion is formed on the thin wall portion side of the flange, and the protrusion abuts on the inner surface in the vehicle width direction of the lower portion of the stay so as to be able to be displaced downward and not to be displaced outward in the vehicle width direction. A vehicle body mounting structure for a resin fender for vehicles.

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