JP2018103804A - Decorative component mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrict wind noise by reducing, by virtue of a decorative component mounting structure, a flow rate of travel wind entering an empty space between an outer panel (outer panel component) and a decorative member, without causing abnormal sound resulting from interference between components.SOLUTION: A mounting structure for mounting a decorative component 25 on a main surface of a resin outer panel component 14a has: a recessed part 20 provided in an area where a decorative component for the resin outer panel component is mounted; and a bead 18 bulging from a bottom of the recessed part toward a rear surface of the decorative component. The bead is formed substantially orthogonal to a direction of travel wind generated by the vehicle body. The bead top part 18t and the rear surface of the decorative component has an empty space of predetermined dimensions. The decorative component mounting structure requires neither a new component nor a new step for mounting of the decorative component.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an attachment structure for attaching a decorative part to the surface of a resin outer plate of an automobile.

  Attempts have been made to reduce the noise generated by each part of the automobile as much as possible. In particular, a coping solution has been proposed for the wind noise generated during traveling. For example, Patent Document 1 discloses a structure in which a pad is set on the back surface of the A pillar in order to suppress wind noise generated by a traveling wind entering from a dividing line between the front fender and the A pillar.

  Patent Document 2 proposes a mounting structure for a rear door garnish. Here, a structure is disclosed in which a rib is provided inside the rear door outer panel and the rear door garnish, and a pad is elastically contacted between the rib and the rear door outer panel.

Japanese Utility Model Publication No. 63-26293 Japanese Patent Laying-Open No. 2015-182495

  Wind noise caused by a decorative part attached to the outer panel of the vehicle body is generated when the wind passes through a gap between the decorative part and the outer panel. Therefore, it can suppress by improving the sealing performance between a decorative component and an outer panel to such an extent that a wind noise does not occur. Therefore, placing the pads is one solution.

  However, when the pad member is used, there is a problem that the workability of assembling the setting parts is reduced due to the reaction force of the pad material. In addition, since it is necessary to prepare a pad material and a process of attaching the pad material, it causes an increase in costs such as an increase in parts and an increase in processes.

  The present invention has been conceived in view of the above-described problems, and provides a structure that suppresses wind noise from a mounting part without increasing the number of parts or increasing the number of processes.

More specifically, the decorative part mounting structure according to the present invention is:
A mounting structure for attaching a decorative part to the surface of a resin outer plate part,
A recess provided in a region where a decorative part of the resin outer plate part is attached;
Having a bead bulging toward the back of the decorative part at the bottom of the recess,
The bead is formed so as to be substantially orthogonal to the flow direction of the traveling wind of the vehicle body,
The bead top and the back surface of the decorative part have a gap of a predetermined size.

The decorative part mounting structure according to the present invention reduces the flow velocity of the traveling wind that has entered the gap between the outer panel (outer plate part) and the decorative part without generating abnormal noise due to interference between the parts, thereby reducing wind noise. Can be suppressed.

  Further, since the shape rigidity of the resin outer plate part is improved by forming the bead, the resin outer plate part can be thinned, and the weight of the vehicle body and the cost can be reduced.

It is an external view of the part to which the decorative component mounting structure 1 according to the present invention is applied. It is AA sectional drawing of FIG. It is a figure which shows the example at the time of forming the multiple bead 18. In FIG.

  The decorative part mounting structure according to the present invention will be described below with reference to the drawings. The following description exemplifies an embodiment of the present invention, and the present invention is not limited to the following description. Accordingly, the following description can be modified without departing from the spirit of the present invention. In this specification, the arrow Fr indicates the front direction of the vehicle body, and the arrow Rr indicates the rear direction of the vehicle body.

  FIG. 1 shows an appearance of a portion to which a decorative part mounting structure 1 according to the present invention is applied. FIG. 1 shows a front portion of the vehicle body, and shows a butted portion of the front door 10, the A pillar 12 and the resin fender 14. A decorative part 25 called a triangular gadget is mounted in a substantially triangular region of the butted portion. In the decorative part mounting structure 1 according to the present invention, the bead 18 is formed in the substantially triangular region.

  FIG. 2 is a cross-sectional view taken along the line AA in FIG. The fender 14 is formed with a recess 20 for arranging the decorative component 25. This is because when the decorative part 25 is attached, the decorative part 25 and the outer panel 14a of the fender 14 (hereinafter referred to as “fender outer panel 14a”) are substantially flush with each other. The fender outer panel 14a and the decorative part 25 are fixed by claw fitting or the like. Therefore, although not shown, a claw and a fitting portion therefor are provided on the back surface 25b side of the decorative component 25 and the fender outer panel 14a.

  A bead 18 that bulges toward the back surface 25b of the decorative component 25 is formed on the bottom 20a of the recess 20. The bead 18 is set to a height that does not contact the back surface 25 b of the decorative component 25. Therefore, a gap 26 having a predetermined size is formed between the top 18t of the bead 18 and the back surface 25b of the decorative part 25. Here, the gap 26 having a predetermined dimension is approximately 0.5 mm to 2 mm. If the decorative component 25 has high rigidity, the gap 26 may be reduced. This is because the decorative part 25 can be regarded as not substantially vibrating.

  On the other hand, when the rigidity of the decorative component 25 is low, it is necessary to keep the gap 26 wide. This is because the plate-like decorative component 25 with less rigidity may generate two-dimensional vibration and come into contact with the top portion 18t of the bead 18.

  The flow rate of the air that has entered between the fender outer panel 14 a and the decorative component 25 by traveling is reduced by the large air resistance generated by the bead 18. Therefore, wind noise is suppressed.

In addition, since the bead 18 and the decorative part 25 are provided with a gap 26 that does not come into contact with the traveling vibration, the occurrence of noise due to interference between the bead 18 and the decorative part 25 is also suppressed. . Furthermore, since the bead 18 can be regarded as a rigidity-enhanced shape (rib), the rigidity of the fender outer panel 14a itself in the vicinity where the bead 18 is disposed is improved. Therefore, there is an effect that the thickness of the fender outer panel 14a and the like can be reduced in the vicinity thereof.

  The formation position of the bead 18 can be variously set according to the shape of the decorative part 25. However, it is preferably provided on the bottom 20a of the recess 20 on the front side of the vehicle body. This is because the traveling wind entering from the attachment gap 30 between the fender outer panel 14a and the decorative part 25 can be effectively decelerated.

  Refer to FIG. 1 again. The setting angle θ of the bead 18 is sufficient if the dent 20 can be divided in the longitudinal direction of the vehicle body. More specifically, it is preferably provided at an angle of ± 60 degrees from the vertical direction. It may be said that this is an angle that is substantially orthogonal to the flow direction of the traveling wind of the vehicle body.

  The bead 18 provided on the fender outer panel 14a is preferably provided in the vertical direction of the decorative component 25. Here, “provided in the vertical direction” means that the bead 18 is provided at a position where it is arranged over 70% of the height (vertical length) from the lower side to the upper side of the decorative part 25. It's okay. This is because the purpose is to reduce the wind speed of the traveling wind passing through the space 30 between the fender outer panel 14a and the decorative part 25. A plurality of beads 18 may be provided in the recess 20. This is because only one bead 18 may not be effective.

  FIG. 3 shows an example in which a plurality of beads 18 are formed. When arranging a plurality of beads 18, not only when all the beads 18 are formed in the vertical direction of the recessed portion 20 (FIG. 3A), they may be arranged in an orifice shape (FIG. 3). (B)). That is, “provided in the vertical direction” includes being formed in the vertical direction by the bead 18 before the rearmost bead 18 in the longitudinal direction of the vehicle body.

  As described above, in the decorative part mounting structure 1 according to the present invention, if the mating member (here, the fender 14) to which the decorative part 25 is attached is made of resin, a bead 18 having a small shape such as a few millimeters can be easily formed. This is a low-cost and effective noise suppression structure.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used for a decorative part mounting structure to be mounted on an automobile outer plate part.

DESCRIPTION OF SYMBOLS 1 Decoration part attachment structure 10 Front door 12 A pillar 14 Fender 14a Fender outer panel 18 Bead 18t Top part 20 Recess part 20a Bottom 25 Decoration part 25b Back surface 26 Gap 30 Attachment gap

Claims (1)

A mounting structure for attaching a decorative part to the surface of a resin outer plate part,
A recess provided in a region where a decorative part of the resin outer plate part is attached;
Having a bead bulging toward the back of the decorative part at the bottom of the recess,
The bead is formed so as to be substantially orthogonal to the flow direction of the traveling wind of the vehicle body,
The decorative part mounting structure, wherein the bead top and the back surface of the decorative part have a gap of a predetermined size.