JP5508692B2 - Vehicle with a fender protector - Google Patents

Description

The present invention relates to a vehicle fitted with a fender protector to protect the vehicle body by attaching the wheel house in the vehicle such as an automobile, in particular, and excellent rigidity lightweight, yet, a vehicle fitted with a fender protector which gave sound absorbing effect .

  In general, a fender protector that covers an upper portion of a tire is attached to an automobile, for example, inside a wheel house of the vehicle body in order to protect the vehicle body from scattering of muddy water and pebbles flying up during traveling. This fender protector is formed in a predetermined shape by injection molding a synthetic resin material, and generally has a substantially inverted U-shaped or arch-shaped shape so that a part of the tire can be covered from above. Is formed. In order to reduce the weight of the fender protector itself, the fender protector itself has a thin plate shape of about 0.8 to 1.5 mm, for example.

  In order to provide the function of protecting the vehicle body such as a fender panel while maintaining a predetermined shape with respect to the fender protector configured as a thin plate in this way, a certain degree of rigidity and strength can be secured. It is required to be configured as such. In addition to the above-described function of protecting the vehicle body, the fender protector is a noise generated when the vehicle travels, such as a collision sound (chipping noise) generated by a collision (chipping noise) of earth, sand, pebbles, water, or the like. There is also a demand for a function for suppressing noise such as fretting noise (pattern noise or road noise) generated by sliding contact between the vehicle and the tire from being propagated into the vehicle interior.

  In order to alleviate the propagation of such noise into the passenger compartment, a structure in which a fender protector is composed of a plurality of layers of nonwoven fabric has been proposed (see, for example, Patent Document 1). That is, a cross-sectional structure of a fender liner 50 as a fender protector described in Patent Document 1 is shown in FIG. 5 as Conventional Example 1 in the present invention. As shown in FIG. 5, the fender liner 50 includes a surface layer 52 that is an outermost layer facing the tire side, and an inner layer 53 that is disposed between the surface layer 52 and the outer surface 51 a of the tire house 51. ing. The inner layer 53 includes a first layer 53a disposed on the surface layer 52 side and a second layer 53b disposed on the outer surface 51a side of the tire house 51.

  The surface layer 52, the first layer 53a, and the second layer 53b are formed from nonwoven fabrics having different fiber densities, respectively. The fender liner 50 includes a surface layer 52 made of a nonwoven fabric layer, a first layer 53a and a second layer 53b, and an air layer 54 disposed between the second layer 53b and the outer surface 51a of the tire house 51. These four layers are laminated to form a laminated structure.

  However, because the fender liner 50 is made of non-woven fabric, problems such as pebbles etc. being caught in the surface layer 52, water and snow, etc. adhering to the fender liner 50, etc. Occurs. On the other hand, with a fender protector configured in a thin plate shape, pebbles etc. may be caught in the fender protector, and water such as attached water and snow will soak into the fender protector. Can be prevented. In addition, the fender protector configured in a thin plate shape also has a sound absorbing effect on noise such as chipping noise, pattern noise, road noise, and the like.

  However, especially with respect to the sound absorption effect for suppressing the impact sound generated by chipping, the fender protector configured in a thin plate shape is lower than that using a non-woven fabric. Furthermore, when the fender protector is configured in a thin state in order to reduce the weight of the fender protector, there is a problem that the rigidity of the fender protector is lowered.

  In addition, when a thin fender protector is molded, the resin flow path cross section in the mold cavity is necessarily narrowed during injection molding. For this reason, the flow resistance of the synthetic resin material flowing in the cavity increases, and cooling and solidification starts before the synthetic resin material completely fills the entire surface of the molded product in the cavity, resulting in a molding defect called filling defect. May end up.

As a means for solving the problem at the time of injection molding when molding a thin fender protector, the present applicant has already proposed (for example, see Patent Document 2). However, there have been no proposals that can effectively solve the problem of the sound absorption effect when the fender protector is molded with a thin wall.
JP 2007-176474 A JP 2008-44458 A

  In the invention in Patent Document 1, since the fender liner 50 is made of a nonwoven fabric, there is a problem that pebbles or the like are caught in the surface layer 52 made of the nonwoven fabric, a problem that water, snow, or the like adheres. is there. In particular, when water, snow, or the like adheres to the surface layer 52, moisture will penetrate into the surface layer 52. And if the water that has soaked up to the inside of the surface layer 52 is repeatedly frozen or unfrozen, large holes are formed in the nonwoven fabric itself, and the strength as the nonwoven fabric deteriorates. It will be.

  In addition, when a thin fender protector such as Patent Document 2 is used, pebbles or the like are caught in the fender protector, or water or snow adheres to the inside of the fender protector. It can be prevented. However, it has been difficult to keep the collision noise generated when pebbles, etc., rolled up by the rotation of the tire collide with a thin fender protector.

Therefore, in the present invention, even when a thin fender protector as disclosed in Patent Document 2 is used, a fender that can effectively reduce noise such as chipping noise, pattern noise, road noise, and the like. It aims at providing the vehicle which attached the protector.

Problems the present invention may be the inventions to the result achieved as described in claims 1-3.
That is, the vehicle with the fender protector according to the present invention installed stands upright on the back surface of the fender protector, which is a surface arranged on the wheel house side at the time of installation in a vehicle with a fender protector attached in the wheel house of the vehicle . And a sound-absorbing material that covers the rib, is attached to the back surface of the fender protector or at least a peripheral edge thereof in close contact with the back surface of the rib, and a portion that is in contact with the rib is lifted from the back surface of the fender protector. Have
A space surrounded by the back surface of the fender protector, the side surface of the rib and the sound absorbing material is configured as a closed sound absorbing air chamber ,
The sound absorbing material 15 is thermally welded to the fender protector 1,
The vehicle body panel 18 constituting the wheel house of the vehicle is brought into contact with the outer surface of the sound absorbing material 15,
A closed second sound-absorbing air chamber 21 is formed between the indented portion 16a that is a heat-welded portion of the sound-absorbing material 15 that is heat-welded to the back surface of the fender protector 1 or the back surface of the rib 14 and the vehicle body panel 18. and it forms the most important feature to become Te.

Further, in the present invention, the rib is configured as a grid rib, and a part of the sound absorbing material is closely attached to a part of the back surface of the fender protector surrounded by the grid rib. Is a key feature.
Further, in the present invention, with the fender protector and the sound absorbing material, and it has a main characterized by having a common synthetic resin material.

In the present invention, the sound absorbing material is arranged on the back surface side of the fender protector, and the sound absorbing material lifted by the rib surface of the fender protector, the side surface of the rib, and the rib by utilizing the rib in the protruding state that increases the rigidity of the fender protector. The space surrounded by is configured as a closed sound absorption chamber.
Moreover, since at least the peripheral edge of the sound absorbing material covering the ribs is attached in close contact with the back surface of the fender protector, the sound absorbing chamber can be configured in a sealed space.

  Since the present invention is configured as described above, even if a thin fender protector is used, noise such as chipping noise, pattern noise, road noise, etc. is efficiently generated by the sound absorbing material and the closed sound absorbing chamber. You will be able to absorb sound. Further, even if the fender protector vibrates due to the influence of noise, the vibration of the fender protector can be attenuated by the sound absorbing material.

  In the present invention, since the sound absorbing chamber can be configured as a closed sound absorbing chamber using the ribs that increase the rigidity of the fender protector, the sound absorbing effect can be greatly enhanced. As a site | part which arrange | positions a sound-absorbing material, it can arrange | position so that the substantially whole surface of a fender protector may be covered, and can also arrange | position especially in the site | part which a chipping noise is easy to generate | occur | produce.

  In addition, since the rib is formed on the back surface of the fender protector, the space for forming the rib can be used effectively when the fender protector is injection-molded, and the flow of the synthetic resin material flowing in this space can be It can be kept lower than before. Therefore, the synthetic resin material can be poured evenly over the entire surface of the fender protector. In addition, it is possible to smoothly vent the gas in the thin region, and it is possible to prevent the occurrence of air accumulation.

  As the sound absorbing material, it is possible to use a nonwoven fabric or a porous urethane sponge in which a plurality of fibers are fused in an entangled state to form a network structure. When the sound absorbing material is composed of a nonwoven fabric, noise in a high frequency band with a short wavelength can be absorbed by the nonwoven fabric, and noise in a low frequency band can be absorbed by a closed sound absorbing chamber. Moreover, as a nonwoven fabric used as a sound absorbing material, a nonwoven fabric composed of a single layer having a constant fiber density or a nonwoven fabric composed of a plurality of layers having different fiber densities can be used.

Moreover, in this invention, the said rib can be comprised as a grid | lattice-like rib, and a sound-absorbing material can be attached to the site | part of the fender protector back surface surrounded by the grid-like rib. By configuring in this way, a sound absorbing chamber can be formed in the region surrounded by the grid ribs. In addition, the sound absorbing chamber formed in the region surrounded by the lattice ribs can be configured as an annular sound absorbing chamber.
By configuring the sound absorbing chamber in an annular shape, the air layer of the sound absorbing chamber can be configured to be large. Since the sound is dispersed in all directions in the sound absorbing chamber, the sound absorbing effect can be improved by configuring a large air layer in the sound absorbing chamber. As a result, the noise propagated to the region surrounded by the grid ribs can be efficiently absorbed in the annular sound absorbing chamber.

  In the present invention, as one of the constituent materials in the fender protector and the sound absorbing material, a common synthetic resin material can be provided for each of them. By configuring in this way, when attaching the sound absorbing material to the fender protector by thermal welding, it becomes easy to perform thermal welding between common synthetic resin materials, and it is possible to improve the weldability in thermal welding. The sound absorbing material can be securely attached to the fender protector.

  As the means for attaching the sound absorbing material to the fender protector, it is possible to appropriately employ attachment means such as heat welding, adhesion with an adhesive, adhesion with double-sided tape, etc. It is desirable to use a fender protector having a synthetic resin material and a sound absorbing material.

  In addition, the sound absorbing material can be attached to the fender protector in such a way that the attachment part is attached in a straight line, in a spot-like manner, or in a state where linear and spot-like attachments coexist. The method of attachment etc. can be selected suitably.

In the invention relating to the vehicle to which the fender protector of the present invention is attached, the heat welded portion of the sound absorbing material attached to the back surface of the fender protector is utilized in a depressed state, and the outer surface of the sound absorbing material is used. The space formed by the sound absorbing material and the vehicle body panel that surrounds the indented portion that is the heat-welded portion when being brought into contact with the vehicle body panel constitutes a closed second sound absorption chamber. The sound absorbing chambers surrounded by the back surface of the fender protector, the side surfaces of the ribs, and the sound absorbing material, and the second sound absorbing chambers can be alternately arranged. Thus, two sound absorption chambers can be arranged, and the sound absorption effect by the sound absorption chamber can be enhanced. Moreover, it is possible to absorb the noise generated in the engine room from leaking out of the wheel house, and the sound absorbing effect of the fender protector can be greatly enhanced as a whole.

  Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. The fender protector of the present invention and the vehicle equipped with the fender protector are related to the present invention as long as the configuration and configuration can solve the problems of the present invention in addition to the configuration described below. It can be used as a vehicle equipped with a fender protector and the fender protector. For this reason, this invention is not limited to the Example demonstrated below, A various change is possible.

  FIG. 1 is a perspective view schematically showing the front side of the fender protector according to the first embodiment from obliquely above, and FIG. 2A is a cross-sectional view taken along the line II-II in FIG. FIG. 2 b is a cross-sectional view taken along the line II-II in FIG. 1 in a state where the fender protector is attached to the vehicle body panel in the wheel house.

  In the following description, when the fender protector 1 is attached to the vehicle, the forward direction of the vehicle is the front and the reverse direction is the rear. Further, the surface of the fender protector 1 on the side attached to the vehicle body panel 18 in the wheel house is the back surface, and the surface facing the tire side disposed in the wheel house is the front surface. Furthermore, the top side of the curved fender protector 1 is the upper side, and the opposite direction is the lower side.

  The fender protector 1 of the present embodiment shown in FIG. 1 is an integrally molded product obtained by injection molding an olefinic thermoplastic resin such as polypropylene or polyethylene, and is attached to the inside of a wheel house of an automobile fender panel so It is the member which covers. The fender protector 1 includes a curved portion 2 that is continuously curved in a substantially inverted U shape, a substantially fan-shaped front end side extended portion 3 that is bent and extended at the front end of the curved portion 2, and a curved portion 2 And a rear end side extending portion 4 extending from the rear end.

  The curved portion 2 includes a front standing portion 5 standing on the front end side, a rear standing portion 6 standing on the rear end side, and a top portion 7 connecting the front standing portion 5 and the rear standing portion 6. Has been. Further, the curved portion 2 is configured to have a thickness of 0.8 mm to 1.5 mm, and is formed thin so that the fender protector 1 can be reduced in weight.

  The curved portion 2 and the front end side extending portion 3 are provided with an end edge portion 8 having a step along the outer edge thereof, and a part of the end edge portion 8 and the front end side extending portion 3 in the curved portion 2 are provided. The substantially arcuate thick edge portion 9 in FIG. 2 is configured to have a thickness of 2.0 mm to 3.0 mm. By forming a part of the thick edge portion 9 and the edge portion 8 to have such a thickness, while maintaining the flexibility of the fender protector 1, the required portion of the bending portion 2 and The rigidity and strength in the front end side extending portion 3 can be effectively improved. It should be noted that, except for the thick portion at the end edge portion 8, it is formed with the same thickness as that of the curved portion 2.

  Further, the curved portion 2 is formed with a notch 10 for inserting a suspension of the automobile at a portion inside the top portion 7. A flange 11 is formed on the inner end edge of the bending portion 2 from a portion where the notch 10 is provided to the rear end side extending portion 4. A plurality of fixing portions for fixing the fender protector 1 to the vehicle body panel 18 of the automobile via a fastener such as a clip are provided on the top portion 7, the thick edge portion 9 and the front end side extension portion 3 of the bending portion 2. 12 is appropriately formed.

  The fixing portion 12 is formed in a shape that protrudes from the front surface side of the fender protector 1 toward the back surface, and the fixing portion 12 on the front surface side of the fender protector 1 is formed in a concave shape. The fender protector 1 is configured to be fixed to the vehicle body panel 18 in a stable attachment state via the fixing portion 12.

  Grid-like ribs 13 are erected on the front standing part 5 and the rear standing part 6 on the back surface of the fender protector 1. The lattice-like ribs 13 erected on the rear standing part 6 are not shown, but are formed in the same configuration as the ribs 13 erected on the front standing part 5. The rib 13 includes a vertical rib 13a along the longitudinal direction of the front upright portion 5 and the rear upright portion 6, and a horizontal rib 13b provided upright in a direction intersecting the vertical rib 13a. The vertical ribs 13a and the horizontal ribs 13b form a lattice shape.

  The rib 13 functions to improve the strength of the fender protector 1 and also functions to smooth the flow of the resin material to be injected when the fender protector 1 is molded.

  While the vehicle with the fender protector 1 attached is running, the sound absorbing material 15 covers the part where the sand, pebbles, water, etc. that are spun up by the rotation of the tire collide with the fender protector 1, and the sound absorbing material 15 is on the back side of the fender protector 1. It is arranged. As the sound absorbing material 15, it can be arranged so as to cover the back side of the fender protector 1, but at least the part of the fender protector 1 where earth, sand, pebbles, water, etc. that are splashed up by the rotation of the tire collide It is desirable to arrange so that the cover is intensively covered from the back side.

  FIG. 1 shows a configuration example in which a sound absorbing material 15 is arranged on the front standing part 5 and the rear standing part 6 so as to cover the part where the boulder, sand, pebbles, water, etc. collide with the fender protector 1. ing. The sound absorbing material 15 is disposed so as to cover the longitudinal ribs 13a and the lateral ribs 13b formed in the front standing part 5 and the rear standing part 6.

  In addition, about the sound-absorbing material 15 arranged on the rear standing part 6, a part thereof is shown, and the overall arrangement configuration of the sound-absorbing material 15 arranged on the rear standing part 6 is the sound-absorbing material arranged on the front standing part 5. The arrangement is the same as 15.

  As the sound absorbing material 15, a nonwoven fabric or a porous urethane sponge in which a plurality of fibers are fused in an entangled state to form a network structure can be used. As the fiber material in the case of using a nonwoven fabric, a polyamide resin, a hydrocarbon resin such as polyethylene, polystyrene, or polypropylene, a polyester resin such as polyethylene terephthalate, or a mixture using these resins can be used.

  As the sound absorbing material 15, instead of using synthetic fibers, glass fibers and ceramic fibers as inorganic fibers, cellulose fibers such as cotton and rayon as natural fibers, protein fibers such as silk and wool, etc. are used. You can also. Alternatively, a combination of appropriate fibers among these synthetic fibers, inorganic fibers, and natural fibers can be used.

  FIG. 1 illustrates the case where the sound absorbing material 15 is composed of a nonwoven fabric using synthetic fibers. In a sound absorbing material using a nonwoven fabric, noise in a high frequency band with a short wavelength can be absorbed by the nonwoven fabric, and noise in a low frequency band can be absorbed by a closed sound absorbing chamber. As the nonwoven fabric used for the sound absorbing material 15, a nonwoven fabric composed of a single layer having a constant fiber density or a nonwoven fabric composed of a plurality of layers having different fiber densities can be used.

  The sound absorbing material 15 is attached to the fender protector 1 by spot heat welding. The heat-welded attachment portion 16 includes a peripheral portion of the sound absorbing material 15, regions inside and outside the lattice portion formed by the ribs 13, and a fixing portion 12 for attaching the fender protector 1 to the vehicle body panel 18 (see FIG. 2B). It is arranged on the periphery.

  The sound absorbing material 15 is formed in a shape in which the periphery of the fixed portion 12 is hollowed out so that the fixed portion 12 can be exposed. Further, in order to match the shape formed in the fender protector 1, a cutout, a cutout, or the like can be formed in the sound absorbing material 15.

  In order to make it easy to attach the sound absorbing material 15 to the fender protector 1 by spot heat welding, for example, the sound absorbing material 15 and the fender protector 1 can be made of polypropylene. In the case where the sound absorbing material 15 is thermally welded to the fender protector 1, it is desirable that at least the constituent material in the sound absorbing material 15 and the fender protector 1 has a common synthetic resin material that is easily heat welded. It becomes composition.

  The mounting portion 16 may be disposed at intervals such that the sound absorbing material 15 disposed between the mounting portions 16 is in close contact with the back surface of the fender protector 1. That is, the mounting portion 16 is disposed so that the outer peripheral region of the sound absorbing material 15 surrounded by the mounting portion 16 is a sealed space. In addition, the plane closely contacting the fender protector 1 at the outer peripheral attachment portion of the sound absorbing material 15 can be configured large, and the adhesion of the sound absorbing material 15 attached to the fender protector 1 can be improved.

  In addition, the mounting portion 16 may be configured as a linear continuous mounting portion by thermal welding, instead of the configuration of mounting by spot thermal welding, or alternatively, spot thermal welding and linear continuous thermal welding. Can also be configured to coexist. For this reason, the arrangement configuration of the attachment portion 16 is not limited to the arrangement configuration shown in FIG. 1, and may be an appropriate arrangement configuration.

  As shown in FIG. 2A showing the II-II cross section of FIG. 1, the sound absorbing material 15 straddling the vertical rib 13a is arranged in a state of being lifted by the vertical rib 13a. Since the sound absorbing material 15 is attached to the fender protector 1 by the attachment portion 16, the sound absorbing chamber 20 surrounded by the side surfaces of the vertical ribs 13a, the back surface of the fender protector 1, and the sound absorbing material 15 is closed. It can be configured as a sound absorption chamber.

  Although not shown in FIG. 2, the sound absorbing material 15 straddling the horizontal rib 13b is also lifted by the horizontal rib 13b and surrounded by the side surface of the horizontal rib 13b, the back surface of the fender protector 1, and the sound absorbing material 15. A sound absorbing chamber 20 is formed. In the inside of the lattice portion formed by the ribs 13, the sound absorption chamber 20 configured by the vertical ribs 13a and the sound absorption chamber 20 configured by the lateral ribs 13b communicate with each other, and are closed annularly. The sound absorption chamber 20 can be configured in advance. In the sound absorption chamber 20, the sound is dispersed in all directions, so that the sound absorption effect can be improved by the closed annular sound absorption chamber 20.

  Outside the lattice portion formed by the ribs 13, the outer peripheral region of the sound absorbing material 15 is arranged so as to be in close contact with the fender protector 1 by the attachment portion 16. As a result, the sound absorbing chamber 20 constituted by the vertical ribs 13a and the sound absorbing chamber 20 constituted by the lateral ribs 13b are constituted as sound absorbing chambers 20 that are independently closed.

  As shown in FIG. 2B, when the fender protector 1 is attached to the vehicle body panel 18 constituting the wheel house, the sound absorbing material 15 can be attached to the vehicle body panel 18 in close contact. A second sound absorbing chamber 21 can be formed between the recessed portion 16 a and the vehicle body panel 18 in the attachment portion 16. Moreover, the sound absorbing chambers 20 and the second sound absorbing chambers 21 can be provided alternately inside the lattice portion of the rib 13.

  Since the two sound absorbing chambers 20 and 21 can be disposed inside the lattice portion formed by the ribs 13, the sound absorbing effect by the sound absorbing chambers 20 and 21 can be greatly enhanced. In addition, noise generated in the engine room arranged inside the vehicle body panel 18 leaks out of the wheel house by the sound absorbing material 15 provided in the fender protector 1 and the two sound absorbing chambers 20, 21. You can reduce going.

  3 (a) and 3 (b) are cross-sectional views of the configuration of Example 2 according to the present invention taken along the same section as the II-II section of FIG. 3A and 3B show the configuration of the second embodiment according to the present invention. In the second embodiment, an example in which the convex portions 24 of the ribs 23 formed in the fender protector 1 are configured in two stations is shown. Other configurations other than the configuration of the ribs 23 are the same as those in the first embodiment. Therefore, about the structure similar to an Example, the description about the member is abbreviate | omitted by using the member code | symbol used in Example 1. FIG.

  In the second embodiment, an example in which the convex portions 24 of the ribs 23 formed on the fender protector 1 are configured in duplicate will be described with reference to FIGS. 3 (a) and 3 (b). However, the convex portion 24 of each rib 23 is not limited to the one configured in two stations, and the convex portion of each rib 23 can be configured in three or more stations. In addition, it is also possible to configure the number of stations of the convex portion 24 in the vertical ribs constituting the rib 23 and the number of stations of the convex portion 24 in the horizontal rib to the same number of stations, or a different number of stations. You can also keep it.

  Further, as the convex portion 24 of each rib 23, the convex portion of each rib 23 may be configured as a solid bead shape in addition to a plurality of stations. That is, it can also be configured in a shape in which round balls are connected like a bead (bead: bead necklace).

  As shown in FIGS. 3 (a) and 3 (b), ribs 23 configured in duplicate as convex portions 24 are formed on the fender protector 1, and the sound absorbing material 15 is disposed so as to straddle the two convex portions 24. When attached, the sound absorbing chamber 25 can be formed between the two convex portions 24. That is, in addition to the sound absorbing chamber 20 described in the first embodiment, a sound absorbing chamber 25 can be formed between the two convex portions 24, and the sound absorbing chambers 20, 25 formed on the back surface of the fender protector 1 can be formed. The number of configurations can be increased. Therefore, noise can be absorbed more efficiently.

  Further, when the convex portion of each rib 23 is configured as a solid bead shape, the sound absorbing chamber 20 surrounded by the side surface of the solid bead-shaped convex portion, the back surface of the fender protector 1, and the sound absorbing material 15. Can be made different along the longitudinal direction of the rib 23, and the sound-absorbing air chambers 20 on both sides sandwiching the convex portion 24 can be communicated at intermittent positions. As a result, the sound absorbing effect in each sound absorbing chamber 20 can be exhibited by the sound absorbing effect associated with the communication between the sound absorbing chambers 20.

  FIG. 4 shows a cross-sectional view of the configuration of Example 3 according to the present invention taken along the same section as the section II-II in FIG. In Example 3, as a configuration of the fender protector 1, ribs 14 are formed in a bead shape. That is, the sound absorbing material 15 can be attached on the back side of the recess 14a forming the rib 14.

  Other configurations other than the configuration of the fender protector 1 are the same as those in the first embodiment. Therefore, about the structure similar to an Example, the description about the member is abbreviate | omitted by using the member code | symbol used in Example 1. FIG.

  The sound absorbing material 15 is attached to the fender protector 1 so as to straddle between the adjacent recesses 14a. That is, the portion of the sound absorbing material 15 straddling between the adjacent recesses 14a is lifted from the back surface of the fender protector 1. With this configuration, the sound absorbing chamber 26 as a large space can be formed between the lower surface of the sound absorbing material 15 and the back surface of the fender protector 1. Since the sound absorbing chamber 26 can be configured to be large, the noise propagated in the sound absorbing chamber 26 is dispersed in all directions in the sound absorbing chamber 26. The noise propagated from the sound absorbing chamber 26 into the sound absorbing material 15 is absorbed by the sound absorbing material 15. Thus, noise can be absorbed efficiently.

  Further, the concave portion 14a of the rib 14 may have a bottom surface portion having a desired size, a configuration in which the ribs 14 are arranged in a staggered manner on the fender protector 1, or a configuration in which the ribs 14 are arranged like a grid. You can also. Further, the adjacent recesses 14a can be communicated with each other to form an annular groove. When the recess 14a is configured as an annular groove, the size of the sound absorption chamber 26 can be further increased, and the sound absorption effect of the sound absorption chamber 26 can be further enhanced.

  The technical idea of the present invention can be effectively used for the technical idea of the present invention.

It is a perspective view of a fender protector. Example 1 It is II-II sectional drawing of FIG. Example 1 It is the other structural example shown by the II-II sectional drawing of FIG. (Example 2) It is another structural example shown by the II-II sectional drawing of FIG. (Example 3) It is a schematic diagram which shows the cross-section of a fender liner. (Conventional example 1)

Explanation of symbols

1 ... Fender protector,
5 ... Front standing part,
6 ... Rear standing part,
12 ... fixed part,
13, 23 ... ribs,
14 ... ribs,
14a ... recess,
15 ... Sound absorbing material,
16 ... Mounting part,
18 ... Body panel,
20, 25, 26 ... sound absorption chamber,
21 ... second acoustic chamber,
24 ... convex-shaped part,
50 ... fender liner,
51 ... Tire house,
52 ... surface layer,
53 ... inner layer,
54: Air layer.

Claims (3)

In a vehicle with a fender protector installed in the vehicle wheel house,
Ribs 13, 14, and 23 erected on the back surface of the fender protector 1, which is a surface disposed on the wheel house side during mounting,
Covering the ribs 13, 14, and 23, at least a peripheral edge portion is closely attached to the back surface of the fender protector 1 or the back surface of the rib 14, and a portion in contact with the ribs 13, 14, and 23 is the back surface of the fender protector 1. Sound absorbing material 15 lifted from,
Have
The space surrounded by the back surface of the fender protector 1, the side surfaces of the ribs 13, 14, and 23 and the sound absorbing material 15 is configured as closed sound absorbing air chambers 20, 25, and 26 .
The sound absorbing material 15 is thermally welded to the fender protector 1,
The vehicle body panel 18 constituting the wheel house of the vehicle is brought into contact with the outer surface of the sound absorbing material 15,
A closed second sound-absorbing air chamber 21 is formed between the indented portion 16a that is a heat-welded portion of the sound-absorbing material 15 that is heat-welded to the back surface of the fender protector 1 or the back surface of the rib 14 and the vehicle body panel 18. comprising Te <br/> that the vehicle fitted with a fender protector, characterized in. The ribs 13, 14, and 23 are configured as lattice ribs, and a part of the sound absorbing material 15 is closely attached to a portion of the back surface of the fender protector 1 surrounded by the lattice ribs. A vehicle equipped with the fender protector according to claim 1. Vehicle and the fender protector 1 and the sound absorbing material 15, attached to the fender protector according to claim 1 or 2, characterized in that a common synthetic resin material.

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