Noise reduction device of vehicle and vehicle

Abstract

The utility model discloses a vehicle noise reduction device and a vehicle, the vehicle noise reduction device comprises a resonance tube, the resonance tube is provided with an air inlet, an air outlet and a resonance cavity, the air inlet is used for being communicated with a vehicle supercharger, the air outlet is used for being communicated with a vehicle air compressor, and the resonance cavity is used for being communicated with the vehicle supercharger. The two ends of the resonant cavity are communicated with the air inlet and the air outlet respectively. Therefore, the air outlet of the resonant tube is communicated with the air compressor of the vehicle, noise generated when the air compressor works can directly enter the resonant cavity, so that the noise resonates with air in the resonant cavity to form sound waves with specific frequency, the sound waves and original sound waves generated by an engine counteract each other, and noise propagation is reduced. Not only can the noise reduction device of the vehicle be simple in structure, but also the noise reduction effect of the noise reduction device of the vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a noise reduction device for a vehicle and the vehicle. Background Art

[0002] When the vehicle is driving or idling, the air compressor needs to work to inflate the air tank. When the air compressor is running and inhaling air, it often produces a lot of noise. The noise of the air compressor can be clearly heard next to the vehicle and is transmitted along the air compressor intake pipe. Even if there is a noise reduction and sound insulation pad in the cab, the air compressor noise can still be felt.

[0003] In the prior art, some vehicles reduce noise by connecting the air compressor interface and the intake pipe with a hose. However, the noise generated when the air compressor is working will be transmitted to the intake port along the hose, with almost no noise reduction effect, and no obvious effect on the NVH performance of the intake system.

[0004] Other vehicles use a 1 / 4 wavelength tube connected between the air compressor interface and the intake pipe, which can reduce the transmission of intake noise to a certain extent. However, the thinner the diameter of the 1 / 4 wavelength tube, the better its noise reduction performance. When the airflow passes through a wavelength tube that is too thin, the gas friction noise and pipe resistance will also increase, which is inconvenient to set up. In addition, this method can usually only selectively eliminate noise in a specific frequency band, which cannot meet the noise reduction requirements of the air compressor. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a noise reduction device for a vehicle, which is convenient to set up and has a good noise reduction effect.

[0006] The utility model further provides a vehicle.

[0007] According to an embodiment of the utility model, the noise reduction device of a vehicle includes: a resonance tube, wherein the resonance tube is provided with an air inlet, an air outlet and a resonance cavity, the air inlet is used to be connected to a vehicle supercharger, the air outlet is used to be connected to a vehicle air compressor, and the two ends of the resonance cavity are respectively connected to the air inlet and the air outlet.

[0008] Therefore, by connecting the air outlet of the resonance tube with the vehicle's air compressor, the noise generated by the air compressor when working can directly enter the resonance cavity, thereby resonating with the air in the resonance cavity to form sound waves of a specific frequency. These sound waves cancel each other out with the original sound waves generated by the engine, thereby reducing the propagation of noise. In this way, not only can the structure of the vehicle's noise reduction device be simplified, but also the noise reduction effect of the vehicle's noise reduction device can be improved.

[0009] In some examples of the present invention, the resonant cavity includes a plurality of sub-resonant cavities, and the plurality of sub-resonant cavities are interconnected.

[0010] In some examples of the present utility model, reinforcing ribs are arranged on the resonance tube, and there are multiple reinforcing ribs, which are distributed at intervals on the resonance tube.

[0011] In some examples of the present invention, the reinforcing ribs include a first reinforcing rib and a second reinforcing rib, the first reinforcing rib is extended in the transverse direction, the second reinforcing rib is extended in the longitudinal direction, there are multiple first reinforcing ribs and multiple second reinforcing ribs, and multiple first reinforcing ribs and multiple second reinforcing ribs are staggered.

[0012] In some examples of the utility model, the noise reduction device of the vehicle also includes an air intake pipe and an air outlet pipe, the air intake port is arranged on the air intake pipe, the air outlet is arranged on the air outlet pipe, the air intake pipe and the air outlet pipe are respectively arranged at two ends of the resonance cavity and are made integrally with the resonance tube.

[0013] In some examples of the present invention, the wall thickness of the resonance tube is D, and D satisfies the relationship: 3mm≤D≤4mm.

[0014] In some examples of the present invention, the resonance tube is a high-density polyethylene resonance tube.

[0015] In some examples of the present invention, a mounting bracket is provided at the bottom of the resonance tube, and the mounting bracket is used to be connected to the engine.

[0016] In some examples of the present invention, the bottom surface of the resonance tube is a plane, the bottom surface of the resonance tube is provided with a first through hole, the mounting bracket is provided with a second through hole, the first through hole and the second through hole correspond to each other and are connected and fixed by fasteners.

[0017] A vehicle according to an embodiment of the utility model includes: the noise reduction device for the vehicle described above.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of a noise reduction device for a vehicle according to an embodiment of the utility model;

[0021] Figure 2 is a schematic diagram of a noise reduction device for a vehicle according to an embodiment of the utility model;

[0022] Figure 3 Schematic diagram of a noise reduction device for a vehicle according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] 100. Noise reduction device;

[0025] 10. resonance tube; 11. air inlet pipe; 111. air inlet; 12. air outlet pipe; 121. air outlet; 14. reinforcing rib; 141. first reinforcing rib; 142. second reinforcing rib;

[0026] 20. Mounting bracket; 21. Fasteners. DETAILED DESCRIPTION

[0027] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0028] Reference below Figure 1-Figure 3 The noise reduction device 100 for a vehicle according to an embodiment of the present invention is described, and the noise reduction device 100 for a vehicle can be applied to a vehicle.

[0029] Combination Figure 1-Figure 3 As shown, the noise reduction device 100 of a vehicle according to the utility model may mainly include: a resonance tube 10, wherein the resonance tube 10 is provided with an air inlet 111, an air outlet 121 and a resonance cavity, the air inlet 111 is used to be connected to the vehicle supercharger, the air outlet 121 is used to be connected to the vehicle air compressor, and the two ends of the resonance cavity are respectively connected to the air inlet 111 and the air outlet 121.

[0030] Specifically, the air outlet 121 of the resonance tube 10 is connected to the air inlet 111 of the air compressor. The noise generated by the air compressor during normal operation will enter the resonance cavity through the air inlet 111 of the air compressor and the air outlet 121 of the resonance tube 10. The vibration noise resonates with the air in the resonance cavity to form sound waves of a specific frequency. These sound waves can offset the original sound waves generated by the engine, thereby reducing the propagation of noise, thereby preventing the noise generated by the air compressor from continuing to transmit outward and affecting the driving experience of the vehicle for the occupants in the vehicle.

[0031] Furthermore, with such an arrangement, the air compressor noise can be silenced as soon as it is transmitted from the sound source, thereby solving the noise problem close to the source, effectively eliminating the air compressor operating noise, and improving the vehicle intake NVH performance.

[0032] In addition, the air outlet 121 of the resonance tube 10 is directly connected to the vehicle air compressor, which can not only shorten the path of the noise of the air compressor to be transmitted to the resonance tube 10, but also improve the noise reduction efficiency of the resonance tube 10, and also facilitate the installation and setting of the resonance tube 10 in the vehicle, which can facilitate manufacturing. Furthermore, the resonance cavity can absorb and buffer the noise of different frequencies generated by the air compressor under different working conditions, which can improve the applicability of the resonance tube 10, thereby improving the performance of the resonance tube 10.

[0033] Therefore, by connecting the air outlet 121 of the resonance tube 10 with the air compressor of the vehicle, the noise generated by the air compressor when working can directly enter the resonance cavity, thereby resonating with the air in the resonance cavity to form sound waves of a specific frequency. These sound waves cancel each other out with the original sound waves generated by the engine, thereby reducing the propagation of noise. In this way, not only can the structure of the noise reduction device 100 of the vehicle be simplified, but also the noise reduction effect of the noise reduction device 100 of the vehicle can be improved.

[0034] In some embodiments of the utility model, the resonant cavity includes a plurality of sub-resonant cavities, and the plurality of sub-resonant cavities are interconnected. Specifically, the resonant cavity is divided into a plurality of interconnected sub-resonant cavities, which can enhance the buffering and absorbing effect of the resonant cavity on the noise generated by the air compressor, better enhance the transmission and elimination of the noise generated by the air compressor inside the resonant cavity, and better enhance the noise reduction performance of the vehicle. It should be noted that the noise reduction performance of the resonant tube 10 can be significantly improved in the 100-300Hz frequency band.

[0035] Combination Figure 1-Figure 3 As shown, the resonance tube 10 is provided with a reinforcing rib 14, and there are a plurality of reinforcing ribs 14, and the plurality of reinforcing ribs 14 are spaced apart on the resonance tube 10. Specifically, a plurality of reinforcing ribs 14 are provided on the surface of the resonance tube 10, and the plurality of reinforcing ribs 14 are spaced apart on the resonance tube 10, so that the structural strength of the resonance tube 10 itself can be improved while satisfying the sound-absorbing performance of the resonance tube 10, and the structural change of the resonance tube 10 is small, which can facilitate the production and manufacturing of the resonance tube 10.

[0036] Combination Figure 1-Figure 3As shown, the reinforcing rib 14 can mainly include a first reinforcing rib 141 and a second reinforcing rib 142, the first reinforcing rib 141 is extended in the transverse direction, the second reinforcing rib 142 is extended in the longitudinal direction, there are multiple first reinforcing ribs 141 and multiple second reinforcing ribs 142, and multiple first reinforcing ribs 141 and multiple second reinforcing ribs 142 are staggered. Specifically, multiple transversely extending first reinforcing ribs 141 are spaced in the longitudinal direction, multiple longitudinally extending second reinforcing ribs 142 are spaced in the transverse direction, and multiple first reinforcing ribs 141 and multiple second reinforcing ribs 142 are staggered with each other, so that not only can the multiple reinforcing ribs 14 improve the structural strength of the resonance tube 10 more evenly, but also can further improve the improvement effect of the reinforcing ribs 14 on the structural strength of the resonance tube 10, and can improve the maximum force of the resonance tube 10.

[0037] Combination Figure 1-Figure 3 As shown, the noise reduction device 100 of the vehicle may also mainly include an air intake pipe 11 and an air outlet pipe 12, an air intake port 111 is arranged on the air intake pipe 11, an air outlet port 121 is arranged on the air outlet pipe 12, and the air intake pipe 11 and the air outlet pipe 12 are respectively arranged at the two ends of the resonance cavity and are made integrally with the resonance tube 10. Specifically, the air intake pipe 11 and the air outlet pipe 12 are respectively arranged at the two ends of the resonance cavity, the air intake port 111 is arranged on the air intake pipe 11, the air outlet port 121 is arranged on the air outlet pipe 12, and the air intake pipe 11, the air outlet pipe 12 and the resonance tube 10 are integrally injection molded, which can not only ensure the normal air intake and outlet of the resonance tube 10, but also simplify the production process of the resonance tube 10. In addition, this can further improve the reliability of the result of the noise reduction device 100 of the vehicle.

[0038] In some embodiments of the present invention, further, the wall thickness of the resonance tube 10 is D, and D satisfies the relationship: 3mm≤D≤4mm. Specifically, setting the wall thickness of the resonance tube 10 within a reasonable range can not only prevent the wall thickness of the resonance tube 10 from being too large, resulting in unnecessary waste of the cost of the resonance tube 10, but also prevent the wall thickness of the resonance tube 10 from being too small, resulting in a low structural strength of the resonance tube 10 and easy damage, which can further improve the structural performance of the resonance tube 10.

[0039] In some embodiments of the utility model, the resonance tube 10 is a high-density polyethylene resonance tube 10. Setting the resonance tube 10 to a high-density polyethylene resonance tube 10 can not only reduce the cost of the resonance tube 10, and can reduce the mass of the resonance tube 10, but also can ensure the structural strength of the resonance tube 10. Further, such a setting can ensure the effect of eliminating noise by the resonance tube 10, so that the structural reliability of the resonance tube 10 can be further improved.

[0040] Combination Figure 1-Figure 3As shown, a mounting bracket 20 is provided at the bottom of the resonance tube 10, and the mounting bracket 20 is used to be connected to the engine. Specifically, by providing the mounting bracket 20 at the bottom of the resonance tube 10 and connecting the mounting bracket 20 to the engine, the resonance tube 10 can be stably and firmly mounted on the engine, thereby not only improving the firmness of the mounting of the resonance tube 10, but also making the mounting of the resonance tube 10 on the engine simpler and more direct.

[0041] Combination Figure 1-Figure 3 As shown, the bottom surface of the resonance tube 10 is a plane, a first perforation is provided on the bottom surface of the resonance tube 10, a second perforation is provided on the mounting bracket 20, the first perforation corresponds to the second perforation and is connected and fixed by a fastener 21. Specifically, by setting the bottom surface of the resonance tube 10 to a plane, and providing a first perforation on the bottom surface of the resonance tube 10, and providing a second perforation on the mounting bracket 20, the first perforation corresponds to the second perforation, and the fastener 21 sequentially penetrates the first perforation and the second perforation, so that the fastener 21 connects and fixes the mounting bracket 20 and the resonance tube 10, not only can the difficulty of installing and fixing the mounting bracket 20 on the resonance tube 10 be reduced, but also the stability and firmness of installing and fixing the mounting bracket 20 on the resonance tube 10 can be improved.

[0042] The vehicle according to the embodiment of the utility model may mainly include the above-mentioned vehicle noise reduction device 100. Applying the vehicle noise reduction device 100 to the vehicle can reduce the noise generated by the vehicle's air compressor, thereby preventing the noise generated by the air compressor from being too loud and affecting the driving experience of the driver and passengers. This can improve the performance of the vehicle, thereby improving the user's experience of using the vehicle.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0045] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A noise reduction device for a vehicle, characterized in that: include: A resonance tube (10), the resonance tube (10) being provided with an air inlet (111), an air outlet (121) and a resonance cavity, the air inlet (111) being used to communicate with a vehicle supercharger, the air outlet (121) being used to communicate with a vehicle air compressor, and two ends of the resonance cavity being respectively connected to the air inlet (111) and the air outlet (121); A mounting bracket (20) is provided at the bottom of the resonance tube (10), and the mounting bracket (20) is used to be connected to the engine. The bottom surface of the resonance tube (10) is a plane, and the bottom surface of the resonance tube (10) is provided with a first through-hole. The mounting bracket (20) is provided with a second through-hole, and the first through-hole corresponds to the second through-hole and is connected and fixed by a fastener (21).

2. The vehicle noise reduction device according to claim 1, characterized in that: The resonant cavity includes a plurality of sub-resonant cavities, and the plurality of sub-resonant cavities are interconnected.

3. The vehicle noise reduction device according to claim 2, characterized in that: The resonance tube (10) is provided with a reinforcing rib (14), and the reinforcing rib (14) is multiple, and the multiple reinforcing ribs (14) are distributed at intervals on the resonance tube (10).

4. The vehicle noise reduction device according to claim 3, characterized in that: The reinforcing rib (14) comprises a first reinforcing rib (141) and a second reinforcing rib (142); the first reinforcing rib (141) is extended in the transverse direction, and the second reinforcing rib (142) is extended in the longitudinal direction; there are a plurality of the first reinforcing rib (141) and a plurality of the second reinforcing rib (142); the plurality of the first reinforcing ribs (141) and the plurality of the second reinforcing ribs (142) are arranged in a staggered manner.

5. The vehicle noise reduction device according to claim 1, characterized in that: It also comprises an air inlet pipe (11) and an air outlet pipe (12), wherein the air inlet (111) is arranged on the air inlet pipe (11), and the air outlet (121) is arranged on the air outlet pipe (12), and the air inlet pipe (11) and the air outlet pipe (12) are respectively arranged at two ends of the resonance cavity and are integrally manufactured with the resonance tube (10).

6. The noise reduction device for a vehicle according to claim 1, characterized in that: The wall thickness of the resonance tube (10) is D, and D satisfies the relationship: 3 mm ≤ D ≤ 4 mm.

7. The vehicle noise reduction device according to claim 1, characterized in that: The resonance tube (10) is a high-density polyethylene resonance tube (10).

8. A vehicle, characterized in that: A noise reduction device (100) for a vehicle comprising any one of claims 1 to 7.

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