Wheel protective cover of vehicle and vehicle with same

Abstract

The invention discloses a vehicle wheel protective cover and a vehicle with the same, and relates to the technical field of wheel protective covers. The wheel protective cover of the vehicle comprises a first protective cover body, a second protective cover body and a rubber layer, a plurality of through holes are formed in the first protective cover body, the second protective cover body and the first protective cover body are arranged and connected in the length direction of the vehicle, and the rubber layer is arranged on one side of the second protective cover body in the thickness direction of the second protective cover body. Therefore, the multiple through holes are formed in the first protective cover, the strength of low-and-medium-frequency noise can be weakened to achieve the sound absorption effect, the rubber layer is arranged on the second protective cover, the strength of high-frequency noise can be weakened to achieve the sound insulation effect, and therefore the wheel protective cover has the good sound absorption effect and the good sound insulation effect at the same time; the intensity of noise transmitted to human ears in a cab is weakened, and the vehicle using experience feeling of a user in the cab is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wheel protection cover, in particular to a wheel protection cover of a vehicle and a vehicle with the same. BACKGROUND

[0002] In the related art, with the trend of electrification of the automobile market, tire noise replaces the engine noise in traditional vehicles and becomes the most complained noise problem. The existing wheel protection cover either performs poorly in sound absorption or in sound insulation, and it is difficult to integrate sound absorption and sound insulation effects, resulting in poor user experience. SUMMARY

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a wheel protection cover of a vehicle, which has good sound absorption and sound insulation effects and can effectively reduce the noise intensity transmitted to the ears of the people in the cab, thereby improving the user experience.

[0004] The present application further provides a vehicle with the above wheel protection cover.

[0005] The wheel protection cover of the vehicle according to the embodiments of the present application comprises: a first protection cover, which is formed with a plurality of through holes; a second protection cover and a rubber layer, which are arranged and connected along the length direction of the vehicle, and the rubber layer is arranged on one side of the second protection cover along the thickness direction of the second protection cover.

[0006] The wheel protection cover of the vehicle according to the embodiments of the present application can reduce the intensity of low-frequency noise by forming a plurality of through holes in the first protection cover, thereby achieving sound absorption effect. The rubber layer arranged on the second protection cover can reduce the intensity of high-frequency noise, thereby achieving sound insulation effect. Thus, the wheel protection cover has good sound absorption and sound insulation effects, which can reduce the noise intensity transmitted to the ears of the people in the cab and improve the user experience in the cab.

[0007] According to some embodiments of the present application, the wheel protection cover of the vehicle further comprises: a polyurethane skin foam, which is arranged on the side of the rubber layer away from the second protection cover along the thickness direction of the second protection cover.

[0008] According to some embodiments of the present application, the surface of the polyurethane skin foam is formed with a polyurethane skin.

[0009] According to some embodiments of the present application, the wheel protection cover of the vehicle further comprises: a sound absorption foam, wherein the polyurethane skin foam is adapted to be connected with the sheet metal of the vehicle and to define a cavity together with the sheet metal, and the sound absorption foam is arranged in the cavity.

[0010] According to some embodiments of the present application, the material of the rubber layer is ethylene-propylene-diene rubber.

[0011] According to some embodiments of the present application, the plurality of through holes are configured as a plurality of through hole groups, each of which includes a plurality of through holes arranged along the length direction of the vehicle, and the plurality of through hole groups are arranged along the width direction of the vehicle.

[0012] According to some embodiments of the present application, along the width direction of the vehicle, the orthographic projection of any through hole in one of the two adjacent through hole groups is located between the orthographic projections of the two adjacent through holes in the other of the two adjacent through hole groups.

[0013] According to some embodiments of the present application, along the thickness direction of the second protective cover, the second protective cover includes, in sequence, a needle-punched sound-absorbing felt, a first polyester fiber layer or a first polypropylene fiber layer, a glass fiber reinforced polypropylene layer, a low-density polyethylene layer, a second polyester fiber layer or a second polypropylene fiber layer, and the needle-punched sound-absorbing felt is located on the side of the low-density polyethylene layer away from the rubber layer.

[0014] According to some embodiments of the present application, the first protective cover and the second protective cover have the same structure.

[0015] The vehicle according to the embodiments of the present application includes the vehicle wheel protective cover described above.

[0016] Additional aspects and advantages of the present application will be made apparent from the following description, which, taken in conjunction with the accompanying drawings, that will further provide a better understanding of the present application. The detailed description includes claims, drawings, and / or appendices. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be more readily understood from the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 is a schematic view of a vehicle wheel protective cover, a front wheel, and a human ear according to embodiments of the present application; Figure 2 is a schematic view of a through hole group of a first protective cover according to embodiments of the present application.

[0018] REFERENCE NUMERALS: first protective cover 1; a plurality of through hole groups 11; through holes 111; first through holes 112; second through holes 113; third through holes 114; second protective cover 2; rubber layer 3; polyurethane skin foam 4; sound-absorbing foam 5; cavity 6; needle-punched sound-absorbing felt 7; vehicle wheel protective cover 10; front wheel 20; human ear 30; sheet metal 40. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following is for reference. Figure 1 and Figure 2 The wheel guard 10 of a vehicle and a vehicle having the wheel guard 10 are described according to an embodiment of the present invention.

[0021] like Figure 1 As shown, the wheel guard 10 of a vehicle according to an embodiment of the present invention includes: a first guard 1, a second guard 2, and a rubber layer 3. The first guard 1 has a plurality of through holes 111. Along the length direction of the vehicle, the second guard 2 is arranged and connected to the first guard 1. Along the thickness direction of the second guard 2, the rubber layer 3 is disposed on one side of the second guard 2.

[0022] The wheel guard 10 can surround the upper side of the wheel to block noise generated at the tire and reduce the intensity of the noise transmitted to the user's ear 30 in the driver's cab, thereby improving the user's driving experience. The wheel guard 10 can be installed on the front wheel 20 and / or the rear wheel. When the wheel guard 10 is used on the front wheel 20, it extends along the length of the vehicle (i.e., along the length of the vehicle). Figure 1 and Figure 2 (In the X direction of the vehicle shown), the first protective cover 1 is located in front of the second protective cover 2. When the wheel cover 10 is used for the rear wheels, along the length direction of the vehicle (i.e., the X direction of the vehicle), the first protective cover 1 is located behind the second protective cover 2 to make the sound insulation effect obvious. Figure 1 The wheel shown is the front wheel 20.

[0023] The first protective cover 1 is connected to the second protective cover 2. In some embodiments of the present invention, the first protective cover 1 can be screwed, snap-fitted, welded, etc., to the second protective cover 2. By making the first protective cover 1 and the second protective cover 2 separate parts, molding is easier and manufacturing difficulty is reduced. The first protective cover 1 and the second protective cover 2 can together form an upwardly convex structure to adapt to the tire shape and can surround the tire to block noise generated at the tire and reduce the intensity of noise transmitted from the tire to the ear 30 in the driver's cab.

[0024] The first protective cover 1 has multiple through holes 111, and each through hole 111 can penetrate the first protective cover 1 along the thickness direction. When noise passes through the multiple through holes 111, the noise will lose energy by rubbing against the inner wall of the through holes 111, so as to achieve the sound absorption effect. By setting multiple through holes 111, the first protective cover 1 can reduce the intensity of low-frequency noise within 1000 Hz, so as to reduce the intensity of noise transmitted to the human ear 30 in the cab.

[0025] Along the thickness direction of the second protective cover 2, a rubber layer 3 is disposed on one side of the second protective cover 2. As some embodiments of the present invention, along the height direction of the vehicle (i.e., Figure 1 (As shown in the Z direction of the vehicle), the rubber layer 3 can be disposed on the upper side of the second protective cover 2. The rubber layer 3 can block noise transmission to reduce noise intensity. The rubber layer 3 can reduce the intensity of high-frequency noise above 1000 Hz. Part of the noise generated at the tire needs to pass through the second protective cover 2, the rubber layer 3, the sheet metal 40, interior materials, etc. before it reaches the user's ear 30 in the driver's cab. This arrangement can reduce the intensity of noise generated at the tire that is transmitted to the user's ear 30 in the driver's cab, thereby achieving a sound insulation effect. As some embodiments of the present invention, the density of the rubber layer 3 can be 1500 kg / m³, and the thickness can be 0.8 mm.

[0026] In the above embodiment, by forming multiple through holes 111 in the first protective cover 1, the intensity of low and medium frequency noise can be reduced to achieve a sound absorption effect. Furthermore, by providing a rubber layer 3 in the second protective cover 2, the intensity of high frequency noise can be reduced to achieve a sound insulation effect. Thus, the wheel cover 10 has both good sound absorption and sound insulation effects, thereby reducing the noise intensity transmitted to the human ear 30 in the cab and improving the driving experience of the user in the cab.

[0027] In some embodiments of the present invention, such as Figure 1 As shown, the vehicle wheel guard 10 also includes a polyurethane skin foam 4, which is disposed on the side of the rubber layer 3 away from the second protective cover 2 along the thickness direction of the second protective cover 2.

[0028] In this design, along the thickness direction of the second protective cover 2, the polyurethane skin foam 4 can be disposed on the side of the rubber layer 3 facing away from the second protective cover 2, and the polyurethane skin foam 4 can be disposed between the rubber layer 3 and the vehicle's sheet metal 40. It should be noted that the wheel cover 10 can be snap-fitted to the vehicle's sheet metal 40. The polyurethane skin foam 4 can seal the gap between the wheel cover 10 and the sheet metal 40, and the polyurethane skin foam 4 can also have an adhesive effect, bonding the wheel cover 10 to the vehicle's sheet metal 40, further improving the connection stability between the wheel cover 10 and the sheet metal 40. A sound-absorbing cavity can be formed between the wheel cover 10 and the vehicle's sheet metal 40, and the polyurethane skin foam 4 can fill the outer gap of the sound-absorbing cavity to seal it. The polyurethane skin foam 4 has a certain sound insulation effect, which can reduce the intensity of low-to-mid frequency noise below 1000 Hz. The polyurethane skin foam 4 can reduce the transmission of external noise into the sound-absorbing cavity through diffraction and other means. By setting the polyurethane skin foam 4, the intensity of noise transmitted into the sound-absorbing cavity is reduced. As some embodiments of the present invention, the density of the polyurethane skin foam 4 can be any value between 100 kg / m³ and 200 kg / m³.

[0029] In some embodiments of the present invention, a polyurethane skin is formed on the surface of the polyurethane skin foam 4. The polyurethane skin has the effect of enhancing the structural strength of the polyurethane skin foam 4, thereby improving the connection strength between the wheel guard 10 and the sheet metal 40. The polyurethane skin can also have a dustproof and waterproof function, reducing the risk of impurities from outside the vehicle entering the muffler cavity, thereby protecting the various components inside the muffler cavity.

[0030] In some embodiments of the present invention, such as Figure 1 As shown, the vehicle wheel cover 10 also includes: sound-absorbing foam 5, polyurethane skin foam 4 adapted to be connected to the vehicle sheet metal 40 and together with the sheet metal 40 define a cavity 6, and the sound-absorbing foam 5 is disposed in the cavity 6.

[0031] The polyurethane skin foam 4 can be bonded to the vehicle's sheet metal 40, and can seal the gap between the wheel guard 10 and the sheet metal 40. A cavity 6 can be formed between the wheel guard 10 and the vehicle's sheet metal 40 (the cavity 6 is the sound-absorbing cavity in the above embodiment), and the sound-absorbing foam 5 can be disposed within the cavity 6. As some embodiments of the present invention, the sound-absorbing foam 5 can be made of polyurethane. As some embodiments of the present invention, the sound-absorbing foam 5 can be constructed as a triangular prism structure. As some embodiments of the present invention, the sound-absorbing foam 5 can be bonded to the sheet metal 40. The sound-absorbing foam 5 can absorb noise within the cavity 6, further reducing the noise intensity transmitted to the cab. As some embodiments of the present invention, the density of the sound-absorbing foam 5 can be any value between 20 kg / m³ and 40 kg / m³.

[0032] In some embodiments of the present invention, the rubber layer 3 is made of ethylene propylene diene monomer (EPDM) rubber. EPDM rubber has a dense molecular structure, which effectively blocks airborne sound transmission and reduces noise intensity. EPDM rubber also has good elasticity, which reduces noise generated by vibration. Furthermore, EPDM rubber has good weather resistance and durability, and excellent resistance to ultraviolet radiation and ozone aging, enabling long-term use and extending the service life of the wheel cover 10.

[0033] In some embodiments of the present invention, such as Figure 2 As shown, the multiple through holes 111 are constructed as multiple sets of through hole groups 11, each set of through hole groups 11 includes multiple through holes 111 arranged at intervals along the length direction of the vehicle, and the multiple sets of through hole groups 11 are arranged at intervals along the width direction of the vehicle.

[0034] In this configuration, along the length of the vehicle, multiple through holes 111 in each group of through holes 11 are arranged at intervals. These multiple groups of through holes 11 can also be arranged at intervals along the width of the vehicle, where the width direction is... Figure 2 The Y direction is shown. As some embodiments of the present invention, the multiple through holes 111 can be arranged in a triangular array. This arrangement can increase the density of the through holes 111, so as to fully absorb noise energy through the multiple through holes 111 and effectively reduce the noise intensity.

[0035] In some embodiments of the present invention, such as Figure 2 As shown, along the width direction of the vehicle, in any two adjacent sets of through-hole groups 11, the orthographic projection of any through-hole 111 in one set of through-hole groups 11 lies between the orthographic projections of two adjacent through-holes 111 in the other set of through-hole groups 11. For example, as... Figure 2 As shown, one of the through holes 111 in one group of through holes 11 is defined as the first through hole 112. Along the width direction of the vehicle, the orthographic projection of the first through hole 112 is located between the orthographic projections of two adjacent through holes 111 in another group of through holes 11. Two adjacent through holes 111 in the other group of through holes 11 are defined as the second through hole 113 and the third through hole 114. The first through hole 112, the second through hole 113, and the third through hole 114 can form a triangular arrangement structure to increase the density of the through holes 111, so as to fully absorb noise energy through multiple through holes 111 and reduce the noise intensity.

[0036] As some embodiments of the present invention, the diameter of the through hole 111 can be any value between 1 mm and 2 mm, and the distance between two adjacent through holes 111 can be any value between 4 mm and 8 mm. This arrangement is reasonable and has a good sound absorption effect.

[0037] In some embodiments of the present invention, along the thickness direction of the second protective cover 2, the second protective cover 2 includes needle-punched sound-absorbing felt, a first polyester fiber layer or a first polypropylene fiber layer, a glass fiber reinforced polypropylene layer, a low-density polyethylene layer, a second polyester fiber layer or a second polypropylene fiber layer stacked in sequence, and the needle-punched sound-absorbing felt is located on the side of the low-density polyethylene layer away from the rubber layer 3.

[0038] Among them, needle-punched sound-absorbing felt has good sound absorption performance and can absorb high-frequency noise above 1000 Hz. The first polyester fiber layer, the first polypropylene fiber layer, the glass fiber reinforced polypropylene layer, and the low-density polyethylene layer all have good sound absorption and sound insulation performance. The needle-punched sound-absorbing felt, the first polyester fiber layer or the first polypropylene fiber layer, the glass fiber reinforced polypropylene layer, the low-density polyethylene layer, and the second polyester fiber layer or the second polypropylene fiber layer are stacked and molded to form a second protective cover 2 with sound insulation function, so that the second protective cover 2 has good sound absorption and sound insulation performance. The needle-punched sound-absorbing felt is located on the side of the low-density polyethylene layer away from the rubber layer 3. This arrangement is reasonable and can effectively block noise transmission and reduce the intensity of noise generated at the tires transmitted to the user's ear 30 in the cab.

[0039] In some embodiments of the present invention, the density of the needle-punched sound-absorbing felt can be 600 g / m², and the thickness of the needle-punched sound-absorbing felt can be 5 mm. In some embodiments of the present invention, the density of the first polyester fiber layer or the first polypropylene fiber layer can be 400 g / m². In some embodiments of the present invention, the density of the glass fiber reinforced polypropylene layer can be 170 g / m². In some embodiments of the present invention, the density of the low-density polyethylene layer can be 500 g / m².

[0040] In some embodiments of the present invention, the first protective cover 1 and the second protective cover 2 have the same structure, both being molded from sequentially stacked needle-punched sound-absorbing felt, a first polyester fiber layer or a first polypropylene fiber layer, a glass fiber reinforced polypropylene layer, a low-density polyethylene layer, and a second polyester fiber layer or a second polypropylene fiber layer. This arrangement facilitates the manufacture of the first protective cover 1 and the second protective cover 2, improves the uniformity of the wheel protective cover 10, and reduces manufacturing costs and manufacturing difficulty.

[0041] The manufacturing and installation steps of the wheel guard 10 are as follows: Step 1: Stack the needle-punched sound-absorbing felt, the first polyester fiber layer or the first polypropylene fiber layer, the glass fiber reinforced polypropylene layer, the low-density polyethylene layer, and the second polyester fiber layer or the second polypropylene fiber layer to form the paving material for manufacturing the first protective cover 1 and the paving material for the second protective cover 2. Step 2: Lay a rubber layer 3 on the flat material of the second protective cover 2; Step 3: Open through holes 111 arranged in a triangular array on the flat material of the first protective cover 1; Step 4: Heat the flat material of the first protective cover 1 and the flat material of the second protective cover 2, and put the two flat materials into the corresponding molds to form the first protective cover 1 and the second protective cover 2. Step 5: Manually trim the edges and corners of the parts, and then weld the first protective cover 1 and the second protective cover 2 together using an ultrasonic welding machine; Step 6: Cut out a triangular prism-shaped sound-absorbing foam 5 and glue it to the corresponding position on the sheet metal 40; Step 7: Adhere the polyurethane skin foam 4 to the corresponding position on the sheet metal 40; Step 8: Attach the welded first protective cover 1 and second protective cover 2 to the corresponding positions on the sheet metal 40 to complete the installation.

[0042] The vehicle according to an embodiment of the present invention includes a wheel cover 10 of the vehicle described above. By forming a plurality of through holes 111 in the first cover 1, the intensity of low- and mid-frequency noise can be reduced to achieve a sound absorption effect. Furthermore, by providing a rubber layer 3 in the second cover 2, the intensity of high-frequency noise can be reduced to achieve a sound insulation effect. Thus, the wheel cover 10 simultaneously has good sound absorption and sound insulation effects, thereby reducing the noise intensity transmitted to the ears 30 of the driver in the cab and improving the driving experience of the user in the cab.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0045] In the description of this invention, "a plurality of" means two or more.

[0046] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0047] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wheel cover (10) for a vehicle, characterized in that, include: A first protective cover (1) having a plurality of through holes (111); The second protective cover (2) and the rubber layer (3) are arranged and connected to the first protective cover (1) along the length direction of the vehicle. The rubber layer (3) is disposed on one side of the second protective cover (2) along the thickness direction of the second protective cover (2).

2. The wheel cover (10) for a vehicle according to claim 1, characterized in that, Also includes: Polyurethane skin foam (4) is disposed on the side of the rubber layer (3) away from the second protective cover (2) along the thickness direction of the second protective cover (2).

3. The wheel cover (10) for a vehicle according to claim 2, characterized in that, A polyurethane skin is formed on the surface of the polyurethane skin foam (4).

4. The wheel cover (10) for a vehicle according to claim 2, characterized in that, Also includes: Sound-absorbing foam (5), the polyurethane skin foam (4) is adapted to be connected to the sheet metal (40) of the vehicle and together with the sheet metal (40) define a cavity (6), the sound-absorbing foam (5) being disposed within the cavity (6).

5. The wheel cover (10) for a vehicle according to claim 1, characterized in that, The rubber layer (3) is made of EPDM rubber.

6. The wheel cover (10) for a vehicle according to claim 1, characterized in that, The multiple through holes (111) are configured as multiple through hole groups (11), each of the through hole groups (11) includes multiple through holes (111) spaced apart along the length direction of the vehicle, and the multiple through hole groups (11) are spaced apart along the width direction of the vehicle.

7. The wheel cover (10) for a vehicle according to claim 6, characterized in that, Along the width direction of the vehicle, in any two adjacent sets of through holes (11), the orthographic projection of any through hole (111) in one set of through holes (11) is located between the orthographic projections of two adjacent through holes (111) in the other set of through holes (11).

8. The wheel cover (10) for a vehicle according to claim 1, characterized in that, Along the thickness direction of the second protective cover (2), the second protective cover (2) includes a needle-punched sound-absorbing felt, a first polyester fiber layer or a first polypropylene fiber layer, a glass fiber reinforced polypropylene layer, a low-density polyethylene layer, a second polyester fiber layer or a second polypropylene fiber layer stacked in sequence, and the needle-punched sound-absorbing felt is located on the side of the low-density polyethylene layer away from the rubber layer (3).

9. The wheel cover (10) for a vehicle according to claim 1, characterized in that, The first protective cover (1) has the same structure as the second protective cover (2).

10. A vehicle, characterized in that, Includes wheel guards (10) for vehicles according to any one of claims 1-9.

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