Sound insulation device, engine and vehicle

Abstract

The utility model relates to the technical field of engines, in particular to a sound insulation device, an engine and a vehicle. The sound insulation device is suitable for covering a shell, a noise reduction through hole is formed in the sound insulation device, a containing space is formed in the direction, facing the shell, of the sound insulation device, and the noise reduction through hole communicates with the containing space and an external space. According to the technical scheme, the design structure size of the sound insulation device is compact, the sound insulation device is tightly embedded into the spoke of the inner belt wheel, roar and air noise generated when the belt wheel rotates are reduced, and the sound quality of the whole machine can be effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of engines, and in particular to a sound insulation device, an engine, and a vehicle. Background Art

[0002] When the engine is running, the crankshaft system will generate some vibration noise during the rotation process. The damping pulley is generally rigidly connected to the front end of the crankshaft by bolts to reduce the torsional vibration of the engine crankshaft during operation. The vibration and operating noise generated by the engine crankshaft system will be directly transmitted to the crankshaft damping pulley, resulting in high near-field noise at the crankshaft damping pulley at the front end of the engine, which has an adverse effect on the NVH (Noise, Vibration, and Harshness) performance of the engine and the entire vehicle. Therefore, finding a method to reduce the noise of the damping pulley is a technical problem that needs to be solved urgently. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the first object of the present invention is to provide a sound insulation device that can reduce the noise from the engine vibration reduction pulley.

[0004] The second purpose of the present invention is to provide an engine.

[0005] The third object of the present invention is to provide a vehicle.

[0006] In order to solve the above problems, an embodiment of the first aspect of the present invention provides a sound insulation device suitable for covering a shell, and the sound insulation device is provided with a noise reduction through hole, wherein the sound insulation device forms an accommodating space toward the shell, and the noise reduction through hole connects the accommodating space and the external space.

[0007] In some embodiments, the noise reduction through hole is located in the center of the sound insulation device.

[0008] In some embodiments, the sound insulation device includes a cover body and a sound insulation portion; the sound insulation portion and the noise reduction through hole are spaced apart on the cover body.

[0009] In some embodiments, a plurality of the sound insulation parts are included, and the plurality of the sound insulation parts are spaced apart along the circumferential direction of the cover body.

[0010] In some embodiments, the sound insulating portion is a raised portion, and the raised portion is raised in a direction toward the housing.

[0011] In some embodiments, the height of the protrusion along the direction toward the shell is D1, the height of the sound insulation device along the direction toward the shell is D2, and the range of D1 / D2 is 3 / 10-4 / 5.

[0012] In some embodiments, the diameter of the noise reduction hole is D3, the diameter of the sound insulation device is D4, and the range of D3 / D4 is 1 / 6-1 / 7.

[0013] In some embodiments, a bushing is further included, which is used to fix the sound insulation device and the shell, and the bushing is located between the sound insulation device and the shell.

[0014] In some embodiments, the cover includes a plurality of first mounting holes, the first mounting holes are spaced apart along the circumference of the cover, the first mounting holes are located between two adjacent sound insulation parts, and the bushing is disposed in the first mounting hole.

[0015] A second aspect of the present invention provides an engine, comprising the above-mentioned sound insulation device.

[0016] In some embodiments, an engine includes a pulley spoke, and a sound insulation device is fixedly connected to the pulley spoke.

[0017] In some embodiments, the sound insulation device includes a cover body and a sound insulation part, the sound insulation part and the noise reduction through hole are arranged at intervals on the cover body; the pulley spoke includes a weight reduction hole; the weight reduction hole and the sound insulation part are arranged relatively.

[0018] In some embodiments, the sound insulation device includes a bushing, which is located between the sound insulation device and the housing to fixedly connect the sound insulation device and the housing. The engine also includes a plurality of first bolts and second bolts. The first bolts pass through the bushing to fixedly connect the sound insulation device and the pulley spoke, and the second bolts are used to connect the pulley spoke and the engine.

[0019] In some embodiments, the sound insulation device includes a bushing, which is located between the sound insulation device and the housing to fixedly connect the sound insulation device and the housing. The engine also includes a plurality of first bolts and second bolts. The first bolts pass through the bushing to fixedly connect the sound insulation device and the pulley spokes, and the second bolts are used to connect the pulley spokes and the engine.

[0020] A third aspect of the present invention provides a vehicle comprising the above-mentioned sound insulation device and an engine.

[0021] The utility model adopts a sound insulation device with a contoured design of the inner pulley spoke of the vibration-damping pulley. The design structure has a compact size and fits tightly with the inner pulley spoke. The noise reduction through-hole destroys the local resonance of the sound insulation device, which can reduce the roar and air noise generated by the rotation of the pulley, and can effectively improve the sound quality of the entire machine.

[0022] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure.

[0024] Figure 1 is a side view schematic diagram of a sound insulation device according to a first embodiment of the present disclosure;

[0025] Figure 2 is a schematic cross-sectional view of a sound insulation device according to a first embodiment of the present disclosure;

[0026] Figure 3 is a schematic top view of a sound insulation device according to a first embodiment of the present disclosure;

[0027] Figure 4 is a disassembled schematic diagram of the sound insulation device according to the first embodiment of the present disclosure;

[0028] Figure 5 is a disassembled schematic diagram of a sound insulation device and a pulley spoke according to a second embodiment of the present disclosure;

[0029] in,

[0030] Sound insulation device: 1; sound insulation part 12; cover 11;

[0031] First mounting hole 121, noise reduction through hole 122;

[0032] Bushing: 2, Housing: 3;

[0033] Pulley spokes: 4, weight reduction holes: 41;

[0034] First bolt: 5; second bolt: 6. DETAILED DESCRIPTION

[0035] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0036] In the present disclosure, unless otherwise specified, the terms "inside" and "outside" used are "inside" and "outside" relative to the outline of the corresponding component itself, and "far" and "near" refer to "far" and "near" compared to a reference object. In addition, the terms used in the present disclosure, such as "first" and "second", are intended to distinguish one element from another and do not have order or importance. In the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limiting the present disclosure.

[0037] See also Figure 1The utility model discloses a first embodiment of a sound insulation device 1.

[0038] See also Figure 1 A sound insulation device 1 is suitable for covering a shell 3, and the sound insulation device 1 is provided with a noise reduction through hole 122, wherein the sound insulation device 1 forms an accommodating space toward the shell 3, and the noise reduction through hole 122 connects the accommodating space and the external space.

[0039] In this embodiment, the sound insulation device 1 is provided with a noise reduction through hole 122. It should be noted that the sound insulation device 1 is made of sound-absorbing material. The noise reduction through hole 122 disrupts local resonance within the sound insulation device 1, thereby achieving noise reduction. The shape of the noise reduction through hole 122 is not limited herein. The sound insulation device 1 forms an accommodation space toward the housing 3. It should be noted that the sound insulation device 1 has an arc-shaped structure.

[0040] In this embodiment, the arc-shaped structure of the sound insulation device 1 can effectively diffuse sound and reduce sound reflection and concentration in acoustic design.

[0041] See also Figure 1 , the noise reduction through hole 122 is located at the center of the sound insulation device 1.

[0042] In this embodiment, when sound waves propagate, they are reflected by obstacles. The noise reduction hole 122 at the center of the sound insulation device 1 can more effectively capture and disperse the sound waves, reducing reflection and interference of the sound waves around the noise reduction hole 122, thereby reducing noise.

[0043] See also Figure 1 The sound insulation device 1 includes a cover body 11 and a sound insulation portion 12 ; the sound insulation portion 12 and the noise reduction through hole 122 are spaced apart on the cover body 11 .

[0044] In this embodiment, the sound insulation part 12 and the noise reduction through hole 122 are spaced apart on the cover body 11. It should be explained in detail that the noise reduction through hole 122 and the sound insulation part 12 are not on the same plane, and there is a transition area between the noise reduction through hole 122 and the sound insulation part 12.

[0045] In this embodiment, by reasonably designing the interval between the noise reduction through hole 122 and the sound insulation portion 12, the flow shear force and the maximum turbulent kinetic energy are reduced, the flow stability is improved, and the flow noise is reduced, thereby effectively absorbing and reducing noise.

[0046] See also Figure 1 and Figure 2 The sound insulation device 1 includes a plurality of sound insulation parts 12 ; the plurality of sound insulation parts 12 are spaced apart along the circumferential direction of the cover body 11 .

[0047] In this embodiment, the sound insulation device 1 includes a plurality of the sound insulation parts 12. It should be noted that the number of the sound insulation parts 12 can be increased or changed according to actual processing technology and needs; the sound insulation parts 12 and the cover body 11 are integrally formed.

[0048] In this embodiment, the size of the sound insulation device 1 fits tightly with the inner spoke of the vibration damping pulley, and the sound insulation portion 12 absorbs the noise radiated from the timing cover vibration damping pulley area. This structure has the advantages of good processability, reliability and low cost.

[0049] See also Figure 1 and Figure 2 The sound insulation portion 12 is a raised portion, and the raised portion protrudes in a direction toward the shell 3 .

[0050] In this embodiment, the raised portion protrudes in the direction toward the housing 3. It should be explained in detail that the sound insulation portion 12 is designed as a raised bulge structure, and a accommodating space is formed on the side facing the crankshaft vibration damping pulley.

[0051] In this embodiment, the raised portion can be used to avoid the mounting bolts of the crankshaft vibration damping pulley and also provide installation space for the sound insulation device. The periodic raised structure can effectively reduce the fluctuation of the surface lift coefficient and also reduce the drag coefficient. In particular, when the raised diameter is larger, the noise reduction effect is more significant.

[0052] See also Figure 2 The height of the raised portion along the direction toward the shell 3 is D1, the height of the sound insulation device 1 along the direction toward the shell 3 is D2, and the range of D1 / D2 is 3 / 10-4 / 5.

[0053] See also Figure 2 The diameter of the noise reduction through hole is D3, the diameter of the sound insulation device 1 is D4, and the range of D3 / D4 is 1 / 6-1 / 7.

[0054] See also Figure 4 The sound insulation device further includes a bushing 2 , which is used to fixedly connect the sound insulation device 1 and the shell 3 , and the bushing 2 is located between the sound insulation device 1 and the shell 3 .

[0055] In this embodiment, the bushing 2 is used to fix the sound insulation device 1 and the shell 3. It should be explained in detail that the bushing 2 can be but is not limited to steel material; the bushing 2 is used to fix the sound insulation device 1 and the shell 3. It should be explained in detail that the sound insulation device 1 can be but is not limited to PU (Polyurethane) material, and the shell 3 can be but is not limited to PEP (Phosphoenolpyruvate) material.

[0056] In this embodiment, PU is an acoustic material with a loose and porous interior that can absorb the radiated noise from the timing cover vibration damping pulley area. The material has high elasticity and good shock absorption effect, which makes it very suitable for applications that require shock absorption effect. In addition, PU (Polyurethane) has excellent wear resistance and good durability, which is better than other elastomers, making it very suitable for scenes with serious wear problems. However, PU (Polyurethane) has the disadvantage of being difficult to fix due to its good elasticity, so it needs to be fixed with a material with higher hardness. The shell 3 is made of PEP (Phosphoen Phosphoenolpyruvate (PhP) materials. The forming process of PEP (Phosphoenolpyruvate) materials is relatively simple, does not require complex equipment and expensive investment, and reduces the cost of production and maintenance. In addition, PEP (Phosphoenolpyruvate) materials have excellent properties such as high strength, high hardness, high thermal conductivity, and high chemical stability. These characteristics make PEP (Phosphoenolpyruvate) materials these properties together ensure the hardness and durability of PEP (Phosphoenolpyruvate) materials in specific applications.

[0057] See also Figure 1 The cover body 11 includes a plurality of first mounting holes 121 , which are arranged at intervals along the circumference of the cover body 11 . The first mounting holes 121 are located between two adjacent sound insulation parts 12 , and the bushing 2 is arranged in the first mounting hole 121 .

[0058] In this embodiment, the first mounting hole 121 is located between two adjacent sound insulation parts 12, and the bushing 2 is arranged in the first mounting hole 121. It should be explained in detail that the bushing 2 and the shell 3 are first inlaid into a whole, and the inlay method is not limited here; then it is assembled into a whole with the front end sound insulation device 1, and the bushing 2 on the shell 3 is pressed by the first bolt 5 to drive the shell 3 to provide a pressing force to complete the fixation.

[0059] See also Figure 5 , the utility model discloses a first embodiment of an engine.

[0060] In this embodiment, an engine includes the above-mentioned sound insulation device 1.

[0061] See also Figure 5 The engine further includes a pulley spoke 4, the pulley spoke 4, and the sound insulation device 1 and the pulley spoke 4 are fixedly connected.

[0062] See also Figure 5The sound insulation device 1 includes a cover body 11 and a sound insulation part 12, and the sound insulation part 12 and the noise reduction through hole 122 are spaced apart on the cover body 11; the pulley spoke 4 includes a weight reduction hole 41; the weight reduction hole 41 and the sound insulation part 12 are arranged opposite to each other.

[0063] In this embodiment, the weight-reducing holes 41 and the sound insulation parts 12 are arranged relative to each other. It should be explained in detail that the number of weight-reducing holes 41 and the number of sound insulation parts 12 can be different or the same; for example, when the number of weight-reducing holes 41 is 3, the number of sound insulation parts 12 can be 3 or 4.

[0064] In this embodiment, the weight-reducing hole 41 is a hole designed on the pulley spoke 4. Its main function is to reduce the weight of the pulley spoke 4, thereby reducing the weight of the entire part and improving its performance and efficiency. The sound insulation part 12 and the weight-reducing hole 41 are arranged relative to each other. The sound insulation part 12 can absorb sound wave energy and reduce sound reflection.

[0065] See also Figure 5 The sound insulation device 1 includes a plurality of sound insulation parts 12, and the plurality of sound insulation parts 12 are spaced apart along the circumferential direction of the cover body 11, and the weight reduction holes 41 are evenly spaced apart along the circumferential direction of the pulley spoke 4.

[0066] The circumferential arrangement of the lightening holes 41 in this embodiment helps to optimize the stress distribution of the structure and reduce stress concentration, thereby improving the fatigue life and reliability of the pulley spoke 4 structure.

[0067] See also Figure 5 The sound insulation device 1 includes a bushing 2, which is located between the sound insulation device 1 and the housing 3 to fixedly connect the sound insulation device 1 and the housing 3; the engine also includes a plurality of first bolts 5 and second bolts 6, the first bolts 5 pass through the bushing 2 to fixedly connect the sound insulation device 1 and the pulley spoke 4, and the second bolts 6 are used to connect the pulley spoke 4 and the engine.

[0068] In this embodiment, the engine also includes multiple first bolts 5 and second bolts 6. It should be noted that the first bolts 5 are four bolts with a diameter of 6 mm, and the second bolts 6 are used to fasten the vibration damping pulley to the crankshaft. The second bolts 6 have no direct connection with the sound insulation device 1.

[0069] If the noise reduction through hole 122 is not provided in this embodiment, during the operation of the engine, the second bolt 6 may rub against the sound insulation device 1 and generate abnormal noise. At the same time, the second mounting hole 122 can also meet the needs of later maintenance. Therefore, in the present utility model, the role of the noise reduction through hole 122 is not only to reduce noise.

[0070] An embodiment of the present utility model further provides an engine, comprising the sound insulation device 1 described in any one of the above embodiments, for absorbing noise from a crankshaft and a vibration-damping pulley, thereby improving user experience.

[0071] An embodiment of the present invention further provides a vehicle, comprising the sound insulation device 1 and an engine as described in any one of the above embodiments, to reduce noise from the engine and improve user experience.

[0072] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0073] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0074] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A sound insulation device, suitable for covering a housing, characterized in that: The sound insulation device is provided with a noise reduction through hole, wherein the sound insulation device forms an accommodating space toward the housing, and the noise reduction through hole communicates the accommodating space with an external space.

2. The sound insulation device according to claim 1, characterized in that: The noise reduction through hole is located at the center of the sound insulation device.

3. The sound insulation device according to claim 1 or 2, characterized in that: The sound insulation device includes a cover body and a sound insulation part; The sound insulation portion and the noise reduction through hole are arranged at intervals on the cover body.

4. The sound insulation device according to claim 3, characterized in that include; The plurality of sound insulation parts are arranged at intervals along the circumferential direction of the cover body.

5. The sound insulation device according to claim 4, characterized in that: The sound insulation portion is a raised portion, and the raised portion is raised in a direction toward the shell.

6. The sound insulation device according to claim 5, characterized in that: The height of the raised portion along the direction toward the shell is D1, the height of the sound insulation device along the direction toward the shell is D2, and the range of D1 / D2 is 3 / 10-4 / 5.

7. The sound insulation device according to claim 1 or 2, characterized in that: The diameter of the noise reduction through hole is D3, the diameter of the sound insulation device is D4, and the range of D3 / D4 is 1 / 6-1 / 7.

8. The sound insulation device according to claim 3, characterized in that Also includes: A bushing is used to fixedly connect the sound insulation device and the shell, and the bushing is located between the sound insulation device and the shell.

9. The sound insulation device according to claim 8, characterized in that: The cover body includes a plurality of first mounting holes, which are arranged at intervals along the circumference of the cover body. The first mounting holes are located between two adjacent sound insulation parts, and the bushing is arranged in the first mounting holes.

10. An engine, characterized in that: The sound insulation device comprises the sound insulation device according to any one of claims 1 to 8.

11. The engine according to claim 10, characterized in that Also includes: The pulley spoke is fixedly connected to the sound insulation device.

12. The engine according to claim 11, characterized in that The sound insulation device includes a cover body and a sound insulation part, the sound insulation part and the noise reduction through hole are spaced apart on the cover body; the pulley spoke includes a weight-reducing hole; The weight-reducing hole and the sound insulation portion are arranged opposite to each other.

13. The engine according to claim 12, characterized in that The sound insulation device includes a plurality of sound insulation parts, the plurality of sound insulation parts are arranged at intervals along the circumferential direction of the cover body, and the weight reduction holes are evenly spaced along the circumferential direction of the pulley spokes.

14. The engine according to claim 11, characterized in that The sound insulation device includes a bushing, wherein the bushing is located between the sound insulation device and the housing to fixedly connect the sound insulation device and the housing. The engine further includes: A plurality of first bolts and second bolts are provided, wherein the first bolts pass through the bushing to fix the sound insulation device and the pulley spoke, and the second bolts are used to connect the pulley spoke and the engine.

15. A vehicle, characterized in that: The invention comprises the sound insulation device according to any one of claims 1 to 9 or the engine according to claims 10 to 14.

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