Sound insulation and heat insulation fender and vehicle

Abstract

The utility model discloses a sound insulation and heat insulation fender and a vehicle, and relates to the technical field of vehicles, the sound insulation and heat insulation fender comprises a heat insulation plate main body and a sound absorption structure, the heat insulation plate main body is provided with a first side face deviating from a wheel; the sound absorption structure is arranged on the first side face. According to the technical scheme, the problem that heat and noise generated by the engine radiate outwards can be solved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a sound-insulating and heat-insulating mudguard and a vehicle. Background Technology

[0002] The primary function of mudguards on vehicles is to prevent mud, water, and sand from being splashed onto the engine during driving, thus protecting it. Mudguards typically don't cover areas where mud, water, and sand can't reach, leaving holes in the engine compartment near the top of the wheels. When the engine starts, heat and noise generated can radiate outwards through these holes. This heat and noise can affect nearby users, such as those camping with the engine running to charge the supercharger and mains battery for their camping needs. Utility Model Content

[0003] The main purpose of this invention is to propose a sound-insulating and heat-insulating mudguard and vehicle, which aims to solve the problem of heat and noise generated by the engine radiating outwards.

[0004] To achieve the above objectives, this utility model proposes a sound-insulating and heat-insulating mudguard for use in vehicles. The vehicle includes a frame, an engine compartment mounted on the frame, and wheels located on the side of the engine compartment. The engine compartment has an opening on the side near the wheel. The sound-insulating and heat-insulating mudguard is positioned on the top side of the wheel and is used to seal the opening. The sound-insulating and heat-insulating mudguard includes:

[0005] The heat insulation panel body has a first side facing away from the wheel; and

[0006] A sound-absorbing structure is provided on the first side.

[0007] In one embodiment, the main body of the heat insulation panel is made of PP-EPDM composite material.

[0008] In one embodiment, the sound-absorbing structure includes a sound-absorbing layer and a protective layer, the protective layer being used to cover the sound-absorbing layer.

[0009] In one embodiment, the thickness of the sound-absorbing layer is 10 mm to 25 mm.

[0010] In one embodiment, the sound-absorbing layer is made of a flame-retardant sound-absorbing material; and / or

[0011] The protective layer is made of non-woven fabric.

[0012] In one embodiment, the sound-absorbing structure is welded to the heat insulation panel body.

[0013] In one embodiment, the sound and heat insulation mudguard is provided with a screw hole for bolting to the vehicle frame.

[0014] In one embodiment, the sound and heat insulation mudguard is further provided with a snap-fit ​​structure for snapping into the vehicle frame.

[0015] In one embodiment, the sound and heat insulation mudguard is provided with snap-fit ​​flanges on both sides extending toward the wheel, and the snap-fit ​​structure is provided on the snap-fit ​​flanges.

[0016] This utility model also proposes a vehicle that includes the aforementioned sound and heat insulation mudguards.

[0017] This invention utilizes a sound-insulating and heat-insulating mudguard to seal the engine compartment opening, thereby preventing engine noise and heat from radiating outwards through the opening and thus avoiding the impact of heat and noise on the user. Furthermore, this solution separates the sound-insulating and heat-insulating mudguard into a heat-insulating main body and a sound-absorbing structure, further enhancing the heat insulation and sound insulation effects of the mudguard. This further reduces the outward radiation of engine noise and heat, thereby further reducing the impact of engine heat and noise on the user. Even if the user stands next to the wheels, they will hardly feel the heat and noise transmitted from the engine. Therefore, the sound-insulating and heat-insulating mudguard proposed in this solution not only has a mud-blocking effect but also reduces the outward radiation of engine noise and heat. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a vehicle frame and sound and heat insulation mudguards provided by this utility model;

[0020] Figure 2 A first-view structural schematic diagram of the sound-insulating and heat-insulating mudguard provided by this utility model;

[0021] Figure 3 A second-view structural schematic diagram of the sound insulation and heat insulation mudguard provided by this utility model;

[0022] Figure 4 A structural schematic diagram of the sound insulation and heat insulation mudguard provided by this utility model from a third-view perspective;

[0023] Figure 5 A structural schematic diagram of the sound insulation and heat insulation mudguard provided by this utility model from a fourth perspective;

[0024] Figure 6 A cross-sectional view of the sound-insulating, heat-insulating, and mud-blocking plate provided by this utility model.

[0025] Explanation of icon numbers:

[0026] 10. Chassis; 20. Sound and heat insulation mudguards; 21. Heat insulation board body; 22. Sound absorption structure; 221. Sound absorption layer; 222. Protective layer; 23. Screw holes; 24. Snap-fit ​​structure; 25. Snap-fit ​​flange.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] The primary function of mudguards on vehicles is to prevent mud, water, and sand from being splashed onto the engine during driving, thus protecting it. Mudguards typically don't cover areas where mud, water, and sand can't reach, leaving holes in the engine compartment near the top of the wheels. When the engine starts, the heat and noise generated can radiate outwards through these holes. When the engine is running and people are active in the vicinity, this heat and noise can affect other users, such as those camping with the engine running to charge the battery pack and power battery for their camping trip.

[0032] To solve the above problems, this utility model proposes a sound-insulating and heat-insulating mudguard 20.

[0033] It should be noted that in this embodiment, the sound and heat insulation mudguard 20 proposed in this application is applied to a motorhome, such as, but not limited to, a light truck diesel hybrid motorhome. Of course, in other embodiments, the sound and heat insulation mudguard 20 proposed in this application can also be applied to other vehicle models.

[0034] Please see Figure 1 and Figure 6 In one embodiment of the present invention, the sound and heat insulation mudguard 20 is used in a vehicle. The vehicle includes a frame 10, an engine compartment mounted on the frame 10, and wheels located on the side of the engine compartment. The engine compartment has an opening on the side near the wheel. The sound and heat insulation mudguard 20 is located on the top side of the wheel and is used to seal the opening. The sound and heat insulation mudguard 20 includes a heat insulation plate body 21 and a sound absorption structure 22. The heat insulation plate body 21 has a first side facing away from the wheel; the sound absorption structure 22 is located on the first side.

[0035] The technical solution of this utility model utilizes a sound-insulating and heat-insulating mudguard 20 to seal the engine compartment opening, thereby preventing engine noise and heat from radiating outwards through the opening and thus avoiding the impact of heat and noise on the user. Furthermore, this solution divides the sound-insulating and heat-insulating mudguard 20 into a heat-insulating main body 21 and a sound-absorbing structure 22, which further enhances the heat insulation and sound insulation effects of the mudguard 20, thereby further reducing the outward radiation of engine noise and heat, and further reducing the impact of engine heat and noise on the user. Even if the user stands next to the wheels, they will hardly feel the heat and noise transmitted from the engine, thus improving the user experience. Therefore, the sound-insulating and heat-insulating mudguard 20 proposed in this solution not only has a mud-blocking effect but also reduces the outward radiation of engine noise and heat.

[0036] Secondly, this solution places the sound-absorbing structure 22 on the first side of the heat insulation board body 21 away from the wheel, which can prevent splashed mud and sand from blocking the sound-absorbing structure 22 and thus affecting the sound absorption performance of the sound-absorbing structure 22.

[0037] It should be noted that hatch openings include gaps and holes in the engine compartment.

[0038] Furthermore, the sound and heat insulation mudguard 20 adopts a conformal design according to the structure between the cab floor and the frame 10. That is, the sound and heat insulation mudguard 20 is set according to the size, position and shape of the holes between the cab floor and the frame 10, so that the sound and heat insulation mudguard 20 can be more compatible with the cab floor and the frame 10, while covering all the holes in the engine compartment near the wheel.

[0039] Optionally, the heat insulation panel body 21 is made of PP-EPDM (polypropylene-ethylene propylene diene monomer) composite material. This is because PP-EPDM composite material is a composite material with good heat resistance and anti-aging properties. Among them, ethylene propylene diene monomer (EPDM) has excellent resistance to ultraviolet rays, ozone, and high and low temperatures, and can effectively resist extreme temperature changes and harsh environments (such as rainwater, de-icing agents, dust, etc.) inside and outside the engine compartment. Polypropylene (PP) provides basic structural strength, and after being blended with EPDM, it forms material toughness and delays aging and cracking. This allows the heat insulation panel body 21 to maintain elasticity and sealing even when exposed to complex environments for a long time, preventing the heat insulation panel body 21 from falling off or failing due to aging. More importantly, polypropylene (PP) itself is a thermoplastic with a low thermal conductivity and a certain degree of heat insulation capacity. In addition, the closed-cell foam structure of ethylene propylene diene monomer (EPDM) can further reduce heat conduction, thereby improving the heat insulation effect of the heat insulation panel body 21. Of course, this solution is not limited to this. In other embodiments, the material used to manufacture the heat insulation board body 21 can also be PP (polypropylene).

[0040] Furthermore, the ratio of PP (polypropylene) to EPDM (ethylene propylene diene monomer rubber) can be adjusted according to the actual vehicle model to improve the heat insulation performance of the sound and heat insulation mudguard 20 while reducing its cost.

[0041] Reference Figure 6 Optionally, the sound-absorbing structure 22 includes a sound-absorbing layer 221 and a protective layer 222. The protective layer 222 is used to cover the sound-absorbing layer 221. It can be understood that this application covers the sound-absorbing layer 221 with a protective layer 222. This can prevent dust and other impurities from blocking the sound-absorbing layer 221, thereby preventing dust and other impurities from affecting the sound absorption effect of the sound-absorbing layer 221. Moreover, even if dust and other impurities are attached to the protective layer 222, they can be gently tapped to make the dust and other impurities fall off. Furthermore, when the sound insulation and heat insulation mudguard 20 is installed, the protective layer 222 can reduce the damage of the sound-absorbing cotton during installation, vibration, or friction. Of course, this solution is not limited to this. In other embodiments, the sound-absorbing structure 22 may only have a sound-absorbing layer 221.

[0042] In this embodiment, the protective layer 222 completely covers the sound-absorbing layer 221, and then the sound-absorbing structure 22 is installed onto the heat insulation board body 21. That is, the protective layer 222 wraps around both sides of the sound-absorbing layer 221, which can further better protect the sound-absorbing layer 221. Of course, this solution is not limited to this. In other embodiments, the sound-absorbing layer 221 can be installed onto the heat insulation board body 21 first, and then the exposed sides of the sound-absorbing layer 221 can be wrapped with the protective layer 222.

[0043] Furthermore, the protective layer 222 has a sealing edge covering the edge of the sound-absorbing layer 221, which prevents the edge of the sound-absorbing layer 221 from loosening or fiber shedding, avoiding sound waves from "escaping" from the edge and improving the overall sound insulation effect. Moreover, the sealing edge can also reduce the sound bridging effect caused by installation gaps. Of course, this solution is not limited to this; in other embodiments, the protective layer 222 may not have a sealing edge.

[0044] Optionally, the thickness h of the sound-absorbing layer 221 can be between 10mm and 25mm, i.e., 10mm ≤ h ≤ 25mm. This allows for more effective absorption and isolation of sounds at different frequencies. Specifically, high-frequency sound waves have short wavelengths and shallow penetration depths, requiring a certain thickness of material for effective attenuation. If the thickness h of the sound-absorbing layer 221 is less than 10mm, the layer will be too thin, resulting in insufficient absorption of high-frequency noise. If the thickness h of the sound-absorbing layer 221 is greater than 25mm, the sound-insulating and heat-insulating mudguard 20 will be too thick, encroaching too much space in the engine compartment. If the space in the engine compartment for installing the sound-insulating and heat-insulating mudguard 20 is limited, the sound-absorbing layer 221 will be compressed, resulting in poor sound absorption. Furthermore, an excessively thick sound-absorbing layer 221 will increase costs.

[0045] Optionally, the sound-absorbing layer 221 is made of flame-retardant sound-absorbing material, that is, the sound-absorbing layer 221 is made of flame-retardant sound-absorbing cotton. It can be understood that this not only enables the sound-insulating and heat-insulating mudguard 20 to have mud-blocking, heat-insulating and sound-insulating effects, but also allows the flame-retardant sound-absorbing cotton to delay the burning time when the engine compartment is ignited by a short circuit or high-temperature components, thus buying time for personnel to escape.

[0046] Furthermore, the sound-absorbing layer 221 can be a flame-retardant sound-absorbing cotton such as rock wool, flame-retardant polyester fiber, or flame-retardant polyurethane foam.

[0047] Furthermore, the protective layer 222 is made of non-woven fabric. On the one hand, during the installation of the sound insulation and heat insulation mudguard 20, the flexibility and abrasion resistance of the non-woven fabric can reduce damage to the sound-absorbing layer 221 during installation, vibration, or friction. The non-woven fabric can also prevent moisture, oil, and dust from entering the sound-absorbing cotton, thus ensuring the sound absorption effect of the sound-absorbing layer 221 for long-term use. Moreover, the fiber structure of the non-woven fabric can scatter high-frequency sound waves, improving the absorption efficiency of engine whistling and wind noise. Of course, this solution is not limited to this; in other embodiments, the protective layer 222 can also be made of aluminum foil, rubber coating, or silicone coating.

[0048] Optionally, the sound-absorbing structure 22 is welded to the heat insulation board body 21, which can improve the connection stability between the sound-absorbing structure 22 and the heat insulation board body 21. Of course, this solution is not limited to this. In other embodiments, the sound-absorbing structure 22 can also be screwed to the heat insulation board body 21.

[0049] Furthermore, in one embodiment, the sound-absorbing structure 22 is ultrasonically welded to the heat insulation panel body 21. In a second embodiment, the sound-absorbing structure 22 is laser-welded to the heat insulation panel body 21.

[0050] Reference Figures 2 to 5 Optionally, the sound and heat insulation mudguard 20 is provided with screw holes 23, which are used to connect with the frame 10 by bolts. This installation method is simple and makes it convenient for operators to install the sound and heat insulation mudguard.

[0051] Optionally, the sound and heat insulation mudguard 20 is further provided with a snap-fit ​​structure 24 for snapping with the vehicle frame 10. Specifically, in this solution, the sound and heat insulation mudguard 20 is first installed onto the vehicle frame 10 through the snap-fit ​​structure 24, thereby achieving the positioning and installation of the sound and heat insulation mudguard 20. Then, the sound and heat insulation mudguard 20 is fastened with bolts, which can further increase the installation accuracy of the sound and heat insulation mudguard 20 while improving its installation stability. Of course, this solution is not limited to this. In other embodiments, the sound and heat insulation mudguard 20 may only have screw holes 23, and the sound and heat insulation mudguard 20 is fixed to the vehicle frame 10 only through the screw holes 23.

[0052] Optionally, the sound and heat insulation mudguard 20 is provided with snap-fit ​​flanges 25 extending toward the wheel on both sides. The snap-fit ​​structure 24 is provided on the snap-fit ​​flanges 25. The snap-fit ​​flanges 25 can increase the coverage area of ​​the sound and heat insulation mudguard 20, thereby increasing the sound and heat insulation effect of the sound and heat insulation mudguard 20.

[0053] Furthermore, in this embodiment, the frame 10 includes a frame body, a cab longitudinal beam, and a cab front support connected together. Bolts are connected to the cab longitudinal beam through bolt holes 23. A snap-fit ​​structure 24 with a snap-fit ​​flange 25 is snap-fitted to the frame body, and another snap-fit ​​structure 24 with a snap-fit ​​flange 25 is connected and fixed to the cab front support; thereby, the entire sound insulation and heat insulation mudguard 20 is installed above the wheel arch.

[0054] This utility model also proposes a vehicle that includes a sound-insulating and heat-insulating mudguard. The specific structure of the sound-insulating and heat-insulating mudguard is as described in the above embodiments. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sound-insulating and heat-insulating mudguard for a vehicle, said vehicle comprising a frame, an engine compartment mounted on the frame, and wheels located on the side of said engine compartment, said engine compartment having an opening on the side near the wheels, characterized in that, The sound-insulating and heat-insulating mudguard is located on the top side of the wheel and is used to seal the hatch opening. The sound-insulating and heat-insulating mudguard includes: The heat insulation panel body has a first side facing away from the wheel; and A sound-absorbing structure is provided on the first side.

2. The acoustically and thermally insulating fender of claim 1, wherein, The main body of the heat insulation panel is made of PP-EPDM composite material.

3. The acoustically and thermally insulating mudguard according to claim 1, characterized in that, The sound-absorbing structure includes a sound-absorbing layer and a protective layer, wherein the protective layer is used to cover the sound-absorbing layer.

4. The sound-insulating, heat-insulating, and mud-bearing plate as described in claim 3, characterized in that, The thickness of the sound-absorbing layer is 10mm to 25mm.

5. The acoustically and thermally insulating fender of claim 3, wherein, The sound-absorbing layer is made of flame-retardant sound-absorbing material; and / or The protective layer is made of non-woven fabric.

6. The acoustically and thermally insulating mudguard according to claim 1, characterized in that, The sound-absorbing structure is welded to the main body of the heat insulation board.

7. A sound and heat insulating mudguard according to any one of claims 1 to 6, characterized in that The sound and heat insulation mudguard is provided with a bolt hole, which is used to connect to the vehicle frame with bolts.

8. The acoustically and thermally insulating mudguard according to claim 7, characterized in that The sound and heat insulation mudguard is also provided with a snap-fit ​​structure, which is used to snap-fit ​​with the vehicle frame.

9. The acoustically and thermally insulating mudguard according to claim 8, characterized in that The sound and heat insulation mudguard is provided with snap-fit ​​flanges on both sides extending toward the wheel, and the snap-fit ​​structure is provided on the snap-fit ​​flanges.

10. A vehicle characterized by comprising: Including the sound-insulating and heat-insulating mudguard as described in any one of claims 1 to 9.

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