JP3121698U - Mudguard - Google Patents

Abstract

An object of the present invention is to provide a mudguard which has an excellent effect of blocking noises such as chipping noise and splash noise, is also excellent in waterproofness, has sound absorption characteristics equivalent to that of a nonwoven fabric, and can ensure rigidity and rust prevention. .
A mudguard composed of a curved plate-like body 3 attached to an exposed surface of a wheel house of a vehicle body, wherein the plate-like body is composed of a hard resin layer 1 and a soft resin layer 2. It is characterized by having.
[Selection] Figure 3

Description

  The present invention relates to a mudguard. More specifically, the present invention relates to a mudguard composed of a curved plate attached to an exposed surface of a wheel house of a vehicle body, wherein the plate is composed of a hard resin layer and a soft resin layer.

  In the car body, noise (pattern noise) due to contact between the tire and the road surface during travel, noise when the tire jumps up the stone (hereinafter referred to as “chipping sound”), noise when the water jumps up (hereinafter referred to as “ Splash sound ”).

  In addition, there is a need for noise prevention in the vicinity of the tire on the rear wheel side close to the cabin because it is easily affected by such chipping noise and splash noise.

  Noise such as chipping noise and splash noise is prevented by applying a thick coating material such as an underbody coat to the exposed surface of the vehicle body (wheel house) or by attaching a hard polypropylene resin molding. .

  On the other hand, it is also conventionally known to provide a protective material made of a felt material on the exposed surface of the vehicle body (wheel house).

  However, when a thick coating material such as an underbody coat is applied to the exposed surface of the car body (wheel house), in addition to the problem that sufficient sound absorption characteristics cannot be obtained, a painting process is added to the automobile production line. Be shy because you need to.

  Further, when a hard polypropylene resin molded body is attached to the exposed surface of the vehicle body (wheel house), there is a problem that the effect of blocking the chipping sound is small.

  Furthermore, the protective material made of felt material attached to the exposed surface of the car body (wheel house) has an effect of blocking noise such as chipping sound and splash sound because an air layer is interposed between the protective material and the car body. On the other hand, since the material of the protective material is a felt material, a sufficient waterproof property cannot be obtained even if a water repellent treatment is performed, so that there is a problem that rust is generated on the vehicle body.

  Furthermore, when the protective material is a synthetic resin material, in order to obtain a sound absorbing performance equivalent to that of a nonwoven fabric such as a felt material, it must be thick (for example, at least twice as thick as the nonwoven fabric). There is a problem that the weight of the product increases. When an elastomer is used instead of a nonwoven fabric, even if it is thin, sound absorption characteristics equivalent to those of the nonwoven fabric can be obtained, but there is a problem that it is difficult to maintain the shape because of lack of rigidity.

  The present invention solves the above-mentioned conventional problems, has an excellent effect of blocking noise such as chipping sound and splash sound, and also has excellent waterproof properties, and can obtain sound absorption characteristics equivalent to that of nonwoven fabric, and can be rigid and It aims at providing the mud guard which can ensure rust.

The mud guard of the present invention is a mud guard composed of a curved plate attached to the exposed surface of the wheel house of the vehicle body,
The plate is
It is characterized by having at least a two-layer structure composed of a hard resin layer and a soft resin layer.

  Moreover, it is preferable that the said hard resin layer is coat | covered with a soft resin layer, and the said soft resin layer is closely_contact | adhered to the exposed surface of the said wheel house.

  Further, one surface of the hard resin layer may be in close contact with the exposed surface of the wheel house, and the other surface may be in close contact with the soft resin layer.

  According to the mudguard according to the first to third aspects of the present invention, the mudguard includes a curved plate attached to the exposed surface of the wheel house of the vehicle body, and the plate includes a hard resin layer and a soft resin layer. Because it has a two-layer structure, it provides a mudguard that is extremely simple in structure and has an excellent effect of blocking noise such as chipping and splash noise to the same level or higher than felt material, and also has excellent waterproof properties. be able to.

  The mudguard of the present invention will be described in detail below with reference to the accompanying drawings.

  1 is a perspective view showing an example of a mudguard according to an embodiment of the present invention, FIG. 2 is an explanatory view showing a state in which the mudguard of the present invention is attached to a vehicle body, and FIG. 3A is a diagram of the mudguard of FIG. FIG. 4 is a partially cutaway perspective view, FIG. 4B is a partially cutaway perspective view showing a modified example of the mud guard in FIG. 3A, and FIG. 4 is a partially cutout showing a further modified example of the mudguard in FIG. It is a perspective view.

  Referring to FIGS. 1 and 2, the mudguard of the present invention is composed of a curved plate-like body 3 attached to an exposed surface of a wheel house B (see FIG. 2) of a vehicle body. Therefore, the shape of the plate-like body 3 is not limited to a specific shape as long as it has a shape complementary to the shape of the wheel house B of the vehicle body.

  As shown in FIG. 1, holes H for inserting screws (not shown) for attaching the plate-like body 3 to the wheel house B of the vehicle body are drilled at two appropriate places on the plate-like body 3. ing. Here, the two appropriate places of the plate-like body 3 mean that the adhering place cannot be specified in relation to other parts constituting the wheel house B of the vehicle body. Further, the number of attachment points is not limited to two, and may be three to five. Further, the method of fixing the vehicle body to the wheel house B is not limited to screwing, and it is possible to fix the vehicle body by rivets or heat fusion.

  Referring to FIG. 3, in the present embodiment, the plate-like body 3 has a two-layer structure including a hard resin layer 1 and a soft resin layer 2. And as a material of the hard resin layer 1, the mixture etc. which mixed fillers, such as glass and a talc, are suitably employ | adopted as a material of the hard resin layer 1, for example. Moreover, as a material of the soft resin layer 2, for example, an olefin-based, styrene-based, or urethane-based elastomer is suitably employed.

  The plate-like body 3 shown in FIG. 3 has a structure in which the hard resin layer 1 is covered with the soft resin layer 2, that is, a structure in which the hard resin layer 1 is sandwiched by the soft resin layer 2 (sandwich structure). ing. And the one surface 3a (refer FIG. 2) of the soft resin layer 2 is closely_contact | adhered to the exposed surface of the wheel house B of a vehicle body. The sandwich structure as shown in FIG. 3A is obtained by a sandwich molding method.

  However, the plate-like body 3 of the present invention is not limited to such a configuration. For example, the soft resin layer 2 not only completely fills the hard resin layer 1 having two or more fishbone structures separated like a fish bone but also includes the fishbone structure hard resin layer 1. The covered one is also included in the present invention (see FIG. 3B). In the case where the fishbone structure hard resin layer 1 shown in FIG. 3 (b) is covered with the soft resin layer 2, the rib 4 is provided on the side of the vehicle body facing the exposed surface of the wheel house. Absent. And the thing which coat | covered the hard resin layer 1 of the fishbone structure shown in FIG.3 (b) with the soft resin layer 2 is excellent in the sound-insulation effect rather than the sandwich structure as shown in FIG.3 (a). In addition, a sound insulation effect equal to or higher than that of the above-mentioned conventional felt material (nonwoven fabric) is obtained, and the weight is at most about 1 to 1.5 times that of the mudguard of the conventional felt material (nonwoven fabric). Rust does not occur.

  In the plate-like body 3 shown in FIG. 4, one surface 3a of the hard resin layer 1 is in close contact with the exposed surface of the wheel house B of the vehicle body, and the other surface 3b (see FIG. 2) is the soft resin layer 2. It has the structure closely_contact | adhered. In this configuration, the hard resin layer 1 previously molded into a desired shape is inserted to mold the soft resin layer 2 (or the soft resin layer 2 previously molded into a desired shape is inserted to form the hard resin layer 1. (Insert molding). However, the present invention is not limited to such a configuration. For example, the structure having the configuration shown in FIG. 4 obtained by insert molding is further insert-molded, so that the configuration shown in FIG. 4 is stacked in two or more stages and joined to each other. Such a configuration is also included in the present invention.

It is a perspective view which shows an example of the mud guard concerning one embodiment of this invention. It is explanatory drawing which shows the state which attached the mud guard of this invention to the vehicle body. (A) is a partially cutaway perspective view of the mud guard of FIG. 1, (b) is a partially cutaway perspective view showing a modification of the mudguard of (a). It is a partially cutaway perspective view showing a further modification of the mudguard of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hard resin layer 2 Soft resin layer 3 Plate-like body 3a One side of a plate-like body 3b The other side of a plate-like body 4 Rib B Wheel house of vehicle body H Hole

Claims (3)

A mudguard composed of a curved plate attached to the exposed surface of the wheel house of the vehicle body,
The plate is
A mudguard having at least a two-layer structure comprising a hard resin layer and a soft resin layer. The mud guard according to claim 1, wherein the hard resin layer is covered with a soft resin layer, and the soft resin layer is in close contact with an exposed surface of the wheel house. The mudguard according to claim 1, wherein one surface of the hard resin layer is in close contact with the exposed surface of the wheel house and the other surface is in close contact with the soft resin layer.

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