Sound insulation and noise reduction type engine hood assembly

Abstract

The utility model discloses a sound insulation and noise reduction type engine hood assembly, which belongs to the technical field of engine hoods, and comprises an engine hood and mounting seats positioned at four corners of the inner top of the engine hood, a sound insulation component is arranged at the inner top of the engine hood, the mounting seats are positioned below the sound insulation component, and sound absorption rods are arranged at four corners of the bottom of the engine hood. Due to the fact that the sound absorption rods composed of the hollow rods, the cylindrical sound absorption cotton and the through holes are arranged at the four corners of the bottom of the engine hood respectively, after the engine hood is installed, the sound absorption rods can be arranged at the four corners of an engine respectively, multi-directional sound insulation is conducted on the outer side edge of the engine, the sound insulation and noise reduction effects of the device are improved, and the service life of the device is prolonged. In addition, an angle adjusting mechanism composed of a ball groove, a ball bead and a supporting rod is arranged at the end of the sound absorption rod, the position of the sound absorption rod can be adjusted at will in the using process, the sound absorption rod is prevented from interfering with installation of components in an engine compartment, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to an engine hood assembly, in particular to a sound insulation and noise reduction type engine hood assembly, belonging to the technical field of engine hoods. Background Art

[0002] In the prior art, for example, a utility model with publication number 202223003639.4 discloses a sound insulation and noise reduction type engine hood assembly. In order to solve the problem that the existing engine hood is a single-layer structure, has poor protection measures for sound insulation and noise reduction, and cannot meet the needs of actual use, the hood is used in coordination with the hood plate, the cover plate, the noise reduction end pipe and the sealing ring. The sealing ring located at the inner end edge of the hood plate can effectively buffer the noise caused by the vibration generated between the hood plate and the vehicle body, and the multiple noise reduction end pipes located inside the extended convex plate, under the action of the shielding convex blocks on the inner wall, refract and buffer the noise generated inside the hood plate, thereby further reducing the noise generated by the engine and meeting the needs of actual use.

[0003] Similar to the above application, there are still some shortcomings:

[0004] At present, the engine hood is installed on the top of the engine, and the sound insulation structure is also installed inside the engine. Therefore, it only has a one-way sound insulation and noise reduction effect during use, and the use effect is poor;

[0005] For this purpose, a sound insulation and noise reduction type engine hood assembly is designed to optimize the above-mentioned problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a sound insulation and noise reduction type engine hood assembly. By respectively arranging sound-absorbing rods composed of hollow rods, cylindrical sound-absorbing cotton and through holes at the four corners of the bottom of the engine hood, the sound-absorbing rods can be placed at the four corners of the engine after the engine hood is installed, and multi-directional sound insulation is performed on the outer side of the engine, thereby improving the sound insulation and noise reduction effect of the device. In addition, by arranging an angle adjustment mechanism composed of ball grooves, balls and support rods at the end of the sound-absorbing rod, the position of the sound-absorbing rod can be adjusted arbitrarily during use to avoid interference of the sound-absorbing rod with the installation of internal components of the engine compartment, thereby having higher practicality. By setting a sound insulation component composed of a shock-absorbing plate, a sound insulation pad and a wave sound-absorbing cotton, the shock-absorbing plate is used for preliminary shock absorption and sound insulation, and the sound insulation pad is used to isolate the low frequency, and finally the wave sound-absorbing cotton is used to absorb the noise, thereby improving the sound insulation and noise reduction effect.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A sound insulation and noise reduction engine hood assembly includes an engine hood and mounting seats located at the four corners of the inner top of the engine hood. A sound insulation component is provided at the inner top of the engine hood, and the mounting seat is located below the sound insulation component. Sound absorbing rods are provided at the four corners of the bottom of the engine hood, and the length of the sound absorbing rods is less than the length of the diagonal side line of the bottom of the engine hood.

[0009] Preferably: the mounting seat includes a vibration-proof plate, a sound-insulating pad and a corrugated sound-absorbing cotton, the corrugated sound-absorbing cotton is attached to the inner top of the engine hood, a sound-insulating pad is arranged below the corrugated sound-absorbing cotton, a vibration-proof plate is installed at the bottom of the sound-insulating pad, and the mounting seat is fixed on the vibration-proof plate.

[0010] Preferably: the sound-absorbing rod includes a hollow rod, cylindrical sound-absorbing cotton, through holes and an angle adjustment mechanism, the interior of the hollow rod is filled with cylindrical sound-absorbing cotton, the outside of the hollow rod is evenly provided with through holes, and an angle adjustment mechanism is provided between the end of the hollow rod and the bottom of the engine hood.

[0011] Preferably, the hollow rod is cylindrical in shape, and a rubber pad is provided on the outer side of the hollow rod.

[0012] Preferably, the angle adjustment mechanism comprises a ball groove, a ball and a support rod, the ball groove is provided at the bottom of the engine cover, the ball groove is rotatably mounted inside the ball groove, the outside of the ball is vertically mounted with a support rod, and the support rod is fixed at the end of the hollow rod.

[0013] Preferably, fastening bolts are threadedly mounted at the four corners of the top of the engine cover, and the ends of the fastening bolts extend into the interior of the ball groove and contact the surface of the ball.

[0014] Preferably: a countersunk groove is provided at the top of the engine hood at a position corresponding to the fastening bolt, and the ends of the fastening bolt are provided with anti-slip grooves.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a sound insulation and noise reduction engine hood assembly. By respectively arranging sound absorbing rods composed of a hollow rod, a columnar sound absorbing cotton and a through hole at the four corners of the bottom of the engine hood, the sound absorbing rods can be respectively placed at the four corners of the engine after the engine hood is installed, so as to perform multi-directional sound insulation at the outer side of the engine, thereby improving the sound insulation and noise reduction effect of the device. In addition, by arranging an angle adjustment mechanism composed of a ball groove, a ball and a support rod at the end of the sound absorbing rod, the position of the sound absorbing rod can be arbitrarily adjusted during use, so as to avoid the sound absorbing rod from interfering with the installation of internal components of the engine compartment, and the utility model is more practical.

[0017] By setting up a sound insulation component consisting of a vibration-proof plate, sound insulation pad, and wave sound-absorbing cotton, the vibration-proof plate is used for preliminary vibration isolation and sound insulation, the sound insulation pad is used to isolate the low frequency, and finally the wave sound-absorbing cotton is used to absorb the noise, thereby improving the effect of sound insulation and noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a bottom view of the structure of the utility model;

[0019] Figure 2 It is a top view of the structure of the utility model;

[0020] Figure 3 This is a diagram of the sound insulation component of the utility model;

[0021] Figure 4 This is a diagram of a sound-absorbing rod according to the present utility model.

[0022] In the figure: 1. Engine hood; 2. Mounting seat; 3. Sound insulation assembly; 4. Sound-absorbing rod; 5. Anti-vibration plate; 6. Sound insulation pad; 7. Wave sound-absorbing cotton; 8. Hollow rod; 9. Columnar sound-absorbing cotton; 10. Through hole; 11. Rubber pad; 12. Ball groove; 13. Ball; 14. Support rod; 15. Fastening bolt. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] like Figure 1-Figure 4 As shown, this embodiment provides a sound insulation and noise reduction type engine hood assembly, including an engine hood 1 and mounting bases 2 located at the four corners of the inner top of the engine hood 1, a sound insulation component 3 is provided at the inner top of the engine hood 1, and the mounting base 2 is located below the sound insulation component 3, and sound absorbing rods 4 are provided at the four corners of the bottom of the engine hood 1, and the length of the sound absorbing rods 4 is less than the length of the diagonal side line of the bottom of the engine hood 1.

[0025] The overall working principle: when not in use, the sound-absorbing rod 4 is folded at the inner bottom of the engine hood 1. When in use, the sound-absorbing rod 4 is unfolded outward, and then the position of the sound-absorbing rod 4 is adjusted, and the sound-absorbing rod 4 is inserted into the vacant area inside the engine compartment, and then the engine hood 1 is fixed to the engine. At this time, the top of the engine and the outside of the engine can have the function of sound absorption and noise reduction, ensuring the use function of the engine hood 1.

[0026] In this embodiment, the mounting seat 2 includes a vibration-proof plate 5, a sound insulation pad 6 and a corrugated sound-absorbing cotton 7. The corrugated sound-absorbing cotton 7 is attached to the inner top of the engine hood 1. A sound insulation pad 6 is arranged under the corrugated sound-absorbing cotton 7. A vibration-proof plate 5 is installed at the bottom of the sound insulation pad 6. The mounting seat 2 is fixed on the vibration-proof plate 5.

[0027] Partial working principle: the vibration-proof plate 5 is used for preliminary vibration-proofing and sound insulation, and the sound insulation pad 6 is used to isolate the low frequency, and finally the wave sound-absorbing cotton 7 is used to absorb the noise, thereby improving the effect of sound insulation and noise reduction.

[0028] In this embodiment, the sound-absorbing rod 4 includes a hollow rod 8, cylindrical sound-absorbing cotton 9, a through hole 10 and an angle adjustment mechanism. The interior of the hollow rod 8 is filled with cylindrical sound-absorbing cotton 9, the outside of the hollow rod 8 is evenly provided with through holes 10, and an angle adjustment mechanism is provided between the end of the hollow rod 8 and the bottom end of the engine hood 1.

[0029] Partial working principle: After the installation is completed, the sound-absorbing rod 4 is located at the outer side of the engine, and the noise generated by the engine will enter the interior of the hollow rod 8 through the through hole 10, and the columnar sound-absorbing cotton 9 will be used to reduce the noise.

[0030] In this embodiment, the hollow rod 8 is cylindrical in shape, and a rubber pad 11 is provided on the outer side of the hollow rod 8 .

[0031] Partial working principle: After the hollow rod 8 is inserted into the interior of the engine compartment, the use of the rubber pad 11 can prevent the hollow rod 8 from being knocked on objects when it is driven by the engine to vibrate at the same time, thereby avoiding the generation of noise.

[0032] In this embodiment, the angle adjustment mechanism includes a ball groove 12, a ball 13 and a support rod 14. The ball groove 12 is opened at the bottom of the engine hood 1. The ball 13 is rotatably installed inside the ball groove 12, and the support rod 14 is vertically installed on the outside of the ball 13. The support rod 14 is fixed to the end of the hollow rod 8.

[0033] Partial working principle: During the adjustment process of the sound-absorbing rod 4, the ball 13 can be used for rotation adjustment, which is convenient for adjusting the position of the sound-absorbing rod 4 and is more convenient to use.

[0034] In this embodiment, fastening bolts 15 are threadedly installed at the four corners of the top of the engine cover 1 , and the ends of the fastening bolts 15 extend into the inside of the ball groove 12 and contact the surface of the ball 13 .

[0035] Partial working principle: After the position adjustment of the sound absorbing rod 4 is completed, tighten the fastening bolt 15 to fix the ball 13 inside the ball groove 12 to ensure the stability of the position of the sound absorbing rod 4.

[0036] In this embodiment, a countersunk groove is provided at the top of the engine hood 1 at a position corresponding to the fastening bolt 15 , and the ends of the fastening bolt 15 are provided with anti-slip grooves.

[0037] Partial working principle: The setting of the countersunk groove can ensure the smoothness of the surface of the engine hood 1, and the anti-slip pattern at the end of the fastening bolt 15 can improve the fixing effect of the ball 13.

[0038] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A sound-insulating and noise-reducing engine hood assembly, comprising an engine hood (1) and mounting seats (2) located at the four corners of the top of the engine hood (1). Features: A sound insulation component (3) is provided at the inner top of the engine hood (1), and the mounting seat (2) is located below the sound insulation component (3). Sound absorbing rods (4) are provided at the four corners of the bottom of the engine hood (1), and the length of the sound absorbing rods (4) is less than the length of the diagonal side line of the bottom of the engine hood (1).

2. A sound insulation and noise reduction engine hood assembly according to claim 1, Features: The mounting seat (2) comprises a vibration-proof plate (5), a sound-insulating pad (6) and a wave sound-absorbing cotton (7); the wave sound-absorbing cotton (7) is attached to the inner top of the engine hood (1); a sound-insulating pad (6) is arranged below the wave sound-absorbing cotton (7); a vibration-proof plate (5) is installed at the bottom of the sound-insulating pad (6); and the mounting seat (2) is fixed on the vibration-proof plate (5).

3. A sound insulation and noise reduction engine hood assembly according to claim 2, Features: The sound-absorbing rod (4) comprises a hollow rod (8), a columnar sound-absorbing cotton (9), a through hole (10) and an angle adjustment mechanism. The interior of the hollow rod (8) is filled with the columnar sound-absorbing cotton (9), the outer side of the hollow rod (8) is evenly provided with through holes (10), and an angle adjustment mechanism is provided between the end of the hollow rod (8) and the bottom end of the engine hood (1).

4. A sound insulation and noise reduction engine hood assembly according to claim 3, Features: The hollow rod (8) is cylindrical in shape, and a rubber pad (11) is provided on the outer side of the hollow rod (8).

5. A sound insulation and noise reduction engine hood assembly according to claim 4, Features: The angle adjustment mechanism comprises a ball groove (12), a ball (13) and a support rod (14). The ball groove (12) is provided at the bottom of the engine cover (1). The ball (13) is rotatably mounted inside the ball groove (12). The support rod (14) is vertically mounted outside the ball (13). The support rod (14) is fixed to the end of the hollow rod (8).

6. A sound insulation and noise reduction engine hood assembly according to claim 5, Features: Fastening bolts (15) are threadedly mounted at the four corners of the top of the engine cover (1), and the ends of the fastening bolts (15) extend into the interior of the ball groove (12) and contact the surface of the ball (13).

7. A sound insulation and noise reduction engine hood assembly according to claim 6, Features: A countersunk groove is provided at the top of the engine hood (1) at a position corresponding to the fastening bolt (15), and the ends of the fastening bolt (15) are provided with anti-slip grooves.

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