JP6617165B2 - Exterior structure of the vehicle front - Google Patents

Description

  The present invention relates to an exterior structure of a vehicle front portion.

In order to reduce the vibration of the vehicle, a weight or a damper is provided in each part of the vehicle body.
In the technique of Patent Document 1, a mass is arranged on a part of a vehicle (bumper or the like), and the vibration of the mass is made to be the natural frequency of the side frame of the vehicle body, thereby trying to take a countermeasure against the booming noise of the vehicle. To do.

Japanese Utility Model Publication No. 4-10129

  However, an exterior member other than the side frame is disposed around the front portion of the vehicle. That is, bumpers, bonnets, fenders and the like. In order to reduce the vibration of the vehicle including these members, it is necessary to add a weight corresponding to the natural frequency of each part. Therefore, there is a problem that the weight of the vehicle increases and the man-hours in the vehicle manufacturing process increase.

  Accordingly, an object of the present invention is to reduce the vibration of the front portion of the vehicle while suppressing an increase in the vehicle weight by limiting the weight to a limited weight and suppressing an increase in the number of steps in the manufacturing process of the vehicle. It is to provide an exterior structure.

The exterior structure of the vehicle front portion of the present invention is a vehicle front exterior structure provided with a plurality of exterior components, and a part of the plurality of exterior components has an upper end fixed to the other exterior components, The lower end side is less rigid than the upper end side , a weight is provided at the lower end portion, and the weight on the lower end side is heavier than the weight on the upper end side, and the upper end portion is used as a fulcrum. It is swingable, and the part is configured to generate an elastic restoring force so that it is restored to the center when it swings to one side and to the center when it swings to the other side. And

  ADVANTAGE OF THE INVENTION According to this invention, the exterior of a vehicle front part which can reduce the vibration of a vehicle front part can suppress a vehicle weight increase, suppressing an increase in the man-hour of the manufacturing process of a vehicle by making a weight into a limited weight. Structure can be provided.

It is a perspective view which shows each exterior component of the vehicle front part in the exterior structure of the vehicle front part which is one Embodiment of this invention. It is the front view which looked at the number plate attachment part in the exterior structure of the vehicle front part which is one Embodiment of this invention from the vehicle front side. It is the rear view which looked at the license plate attachment part in the exterior structure of the vehicle front part which is one Embodiment of this invention from the vehicle inside side. It is the expansion perspective view which looked at the license plate attachment part in the exterior structure of the vehicle front part which is one Embodiment of this invention from the back side. It is the front view (a) and perspective view (b) of the exterior structure of the vehicle front part which are one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each figure, arrows indicating front, rear, left, right, and up and down of the vehicle indicate the direction of the vehicle as viewed from the driver.

  FIG. 1 is a perspective view showing each exterior component of the vehicle front portion 1. The vehicle exterior 1 is mainly provided with the following exterior parts. First, a bumper 2 that suppresses an impact received by the vehicle is provided from the frontmost part of the vehicle front part 1 to the front side of the side part. A bonnet 3 that can be opened and closed is provided at an upper portion of the vehicle front portion 1 and in front of a driver seat (not shown). Further, fenders 5 provided so as to cover a tire house 4 of a front wheel (not shown) are located on the left and right of the vehicle front portion 1. A front grill 8 is provided at the center of the forefront portion of the vehicle front portion 1. The front grill 8 is disposed in front of an engine (not shown). In addition, as exterior parts of the vehicle front part 1, headlights 6 and 6 provided on the left and right of the vehicle front part, respectively, and also provided on the left and right of the vehicle front part, respectively, functions such as turn signals, hazard lamps, brake lamps, etc. Also provided are lamps 7,7 and the like.

The front grill 8 and the bumper 2 are connected by a clip (not shown).
A license plate mounting portion 9 for mounting a license plate (not shown) is provided at a substantially central portion of the front grill 8. Below, this number plate attaching part 9 is demonstrated.

  FIG. 2 is a front view of the license plate mounting portion 9 as viewed from the front side of the vehicle, and FIG. 3 is a rear view of the license plate mounting portion 9 as viewed from the inside of the vehicle. The license plate mounting portion 9 is a horizontally long and substantially rectangular member. The number plate mounting portion 9 is integrally formed with the front grill 8. The upper end portion 9b of the license plate mounting portion 9 is fixed to the front grill 8 as a whole. On the other hand, a through-hole 11 is formed in the side part and the lower part of the license plate attachment part 9. For this reason, the rigidity of the lower end portion 9b side is lower than that of the upper end portion 9a side of the license plate mounting portion 9. Further, a pair of bolt holes 12 and 12 for attaching a number plate (not shown) pass through in the vicinity of both left and right ends of the license plate attaching portion 9.

  Further, as shown in FIG. 3, a pair of weights 13, 13 are provided on the lower surface 9 c of the number plate mounting portion 9 on the back surface 9 c opposite to the surface on which the number plate mounting portion 9 is mounted. ing. Thereby, the license plate attaching part 9 is heavier on the lower end part 9b side than on the upper end part 9a side.

  FIG. 4 is an enlarged perspective view of the back surface 9c portion of the license plate mounting portion 9. As shown in FIG. The pair of weights 13 is formed of the same shape, the same size, the same weight, and the same material. Each weight 13 is, for example, a long and flat metal member. Each of the weights 13 is bent somewhat in a dogleg shape at a substantially central position 13a in the longitudinal direction, and one tip side position 13b is bent somewhat in a direction opposite to the substantially central position 13a. The surface direction of the portion 13c where the front end side position 13b is not formed with the substantially central position 13a as a boundary is substantially parallel to the surface direction of the portion 13d ahead of the weight 13 from the front end side position 13b.

  The front portions 13d of the pair of weights 13 and 13 are fixed by screws 14 to the center portion 9c1 in the left-right direction of the back surface 9c of the number plate mounting portion 9, respectively. Further, the respective portions 13c of the pair of weights 13 and 13 are fixed by screws 14 to mounting portions 9d extending to the vehicle inner side on both the left and right sides of the back surface 9c of the license plate mounting portion 9. Thereby, a pair of weights 13 and 13 are arrange | positioned so that it may become a left-right symmetric shape seeing from the vehicle inner side.

  Next, the effect by the exterior structure of the vehicle front part of this embodiment is demonstrated.

  When vibration occurs in the vehicle while the vehicle is running, the number plate mounting portion 9 provided with the pair of weights 13 and 13 swings in the vehicle front-rear direction with the upper end portion 9a as a fulcrum. The lower end portion 9b side of the license plate mounting portion 9 has lower rigidity than the upper end portion 9a side, and the license plate mounting portion 9 easily swings in the vehicle longitudinal direction due to the weight of the pair of weights 13 and 13. This swinging motion includes not only the swinging component in the vehicle longitudinal direction but also the swinging component in the vehicle vertical direction.

  The swing component in the vertical direction of the vehicle is reduced by canceling the vertical vibration of the vehicle to some extent. Thereby, the noise and vibration which generate | occur | produce in a vehicle can be suppressed to some extent. In addition to the effect of suppressing the vibration of the vehicle on the front grill 8 and the bumper 2 coupled to the front grill 8 by a clip, a ripple effect can be expected to some extent on the bonnet 3 and the fender 5 close thereto.

That is, the license plate mounting portion 9 which is an existing member is used as a weight, and a pair of weights 13 and 13 are newly added to the license plate mounting portion 9. The number plate mounting portion 9 and the weights 13 and 13 constitute a dynamic vibration absorber with the upper end portion 9a as a spring. That is, here, the spring means that an elastic restoring force acts so that the lower end 9b side of the license plate mounting portion 9 returns to the center regardless of whether it swings forward or backward.
That is, by using the mode that the system has, the motion of the dynamic vibration absorber constituted by the license plate mounting portion 9 in a direction that cancels the vibration in the vertical direction of the vehicle to some extent while using the weight of the license plate mounting portion 9 itself. Works.

Therefore, since the number plate attaching portion 9 itself is used as a weight, the weights 13 and 13 attached to the license plate attaching portion 9 need only be relatively light weight. Therefore, it is possible to suppress the increase in the vehicle weight by setting the weights 13 and 13 to a limited weight.
Moreover, it is not necessary to manufacture a dynamic vibration absorber newly and arrange | position to the vehicle front part 1, What is necessary is just to attach the weights 13 and 13 to the existing license plate attaching part 9. Therefore, an increase in man-hours in the vehicle manufacturing process can be suppressed.

Further, since the weights 13 are provided on the back surface 9c of the license plate mounting portion 9, the weight plates 13 and 13 do not interfere with the mounting of the license plate to the license plate mounting portion 9. In addition, since the weights 13 and 13 are not provided on the surface of the license plate mounting portion 9, the appearance of the license plate portion is not deteriorated by the weights 13 and 13.
In addition, you may attach a weight to exterior components other than the number plate attachment part 9, and you may utilize as a damper similarly to the above.

5A and 5B show another embodiment of the present invention, in which FIG. 5A is a front view of the vehicle front portion 1, and FIG. 5B is a perspective view of the vehicle front portion 1. In the present embodiment, members that are the same as those in the above embodiment are given the same reference numerals, and detailed descriptions thereof are omitted. 5 differs from the embodiment described above with reference to FIGS. 1 to 4 in that the lower end portion 9b side of the license plate mounting portion 9 is a free end and is not fixed to the grill 8. is there. The bumper 2 is located on the rear side of the license plate mounting portion 9.
With such a configuration, the license plate mounting portion 9 can easily swing back and forth, and can effectively function as a dynamic vibration absorber.

  In the above-described embodiments, the weights 13 are not attached to the license plate attachment portion 9 but are formed thicker on the lower end portion 9b side than the upper end portion 9a side of the license plate attachment portion 9. Good. Thus, even if the weights 13 and 13 are not attached to the license plate attachment portion 9, the weight on the lower end portion 9b side of the license plate attachment portion 9 is increased, and the same effect as the attachment of the weights 13 and 13 is achieved. Can do. Therefore, the work process of attaching the weights 13 and 13 to the license plate attachment portion 9 can be omitted, and the increase in the number of man-hours in the vehicle manufacturing process can be further suppressed.

1 Vehicle front 2 Bumper (exterior parts)
3 Bonnet (exterior parts)
5 Fender (exterior parts)
8 Front grille (exterior parts) (other exterior parts)
9 Number plate mounting part (exterior part) (part of multiple exterior parts)
9a Upper end portion 9b Lower end portion 9c Back surface 13 Weight

Claims (4)

An exterior structure of a vehicle front portion having a plurality of exterior parts,
In some of the plurality of exterior parts, the upper end is fixed to the other exterior parts, the lower end side is lower in rigidity than the upper end side, and a weight is provided on the lower end side so that the weight on the upper end side is increased. The weight on the lower end side is heavier than that, and can be swung around the upper end portion as a fulcrum, and when the part swings to one side, the center also swings to the other side An exterior structure of a front portion of a vehicle, characterized in that an elastic restoring force is generated so as to restore to the center. A part of the plurality of exterior parts is a license plate mounting portion that is provided on a front grill of the vehicle front and to which a license plate is attached.
The license plate attachment portion of the vehicle front portion of the exterior structure according to claim 1, the upper end to the front grille, characterized in Tei Rukoto fixed.   The exterior structure of the front part of the vehicle according to claim 2, wherein the weight is provided on a back surface of the license plate mounting portion to which the license plate is not attached.   The exterior structure of the front part of the vehicle according to any one of claims 1 to 3, wherein a part of the exterior component has a free end on a lower end side.

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