Sound insulation cover

Abstract

The utility model relates to the technical field of sound insulation parts, in particular to a sound insulation cover which comprises a half cover, the half cover is made of a heavy coating bonded with a protective layer through preheating, vacuum forming, forming and trimming, the half cover is processed to form an inner cavity and an edge, the inner wall of the inner cavity is the heavy coating, the edge is arranged along the edge of the inner cavity, and the inner wall of the inner cavity is provided with the protective layer. A sound absorption layer is formed on one side of the heavy coating layer, and fixing holes are formed in the edge, so that the effects of reducing chromatic aberration formed after the sound insulation part is collided or scratched and improving the attractiveness of the sound insulation part are achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sound insulation members, in particular to a sound insulation cover. BACKGROUND

[0002] The sound insulation cover, also known as a sound insulation cover or a sound insulation cover, is mainly used for surrounding noise sources such as mechanical equipment, generators, air conditioner units and the like, so as to reduce the influence of noise generated by the equipment on the surrounding environment or personnel. The sound insulation cover is widely used in automobiles and is crucial for improving the driving comfort and quietness of the automobile.

[0003] The sound insulation cover of the automobile air conditioner compressor is usually composed of an adsorbing layer and a heavy coating layer, wherein the adsorbing layer plays a sound absorbing role, and the heavy coating layer plays a sound insulation role. The heavy coating layer is located away from the noise source side and serves as an appearance surface. At present, the heavy coating layer is mainly made of high-filled barium sulfate of ethylene-based elastomer material. The heavy coating layer is made of raw materials through preheating, vacuum suction molding, molding and trimming.

[0004] The prior art in the above has the following defects: when the appearance surface of the sound insulation cover is bumped or scratched, the fillers in the heavy coating layer are exposed, and the exposed fillers will form a color difference with the surrounding materials, showing obvious scratches, reducing the appearance of the sound insulation member. CONTENT OF THE UTILITY MODEL

[0005] The application provides a sound insulation cover in order to reduce the color difference formed after the sound insulation member is bumped or scratched and improve the appearance of the sound insulation member.

[0006] The above technical purpose of the application is realized by the following technical scheme:

[0007] A sound insulation cover comprises a half cover, the half cover is made of a heavy coating layer with a protective layer through preheating, vacuum suction molding, molding and trimming, the half cover is processed to form an inner cavity and an edge, the inner wall of the inner cavity is the heavy coating layer, the edge is arranged along the edge of the inner cavity, one side of the heavy coating layer is processed to form an adsorbing layer, and a fixing hole is formed in the edge.

[0008] By adopting the above technical scheme, the two half covers wrap the equipment emitting noise, the fixing holes of the two half covers are one-to-one corresponding, and the two half covers are fixed by bolts. The protective layer can increase the surface hardness of the sound insulation cover and increase the overall structural strength of the sound insulation cover. During transportation and use, the protective layer can reduce scratches and damage on the surface of the heavy coating layer, and the sound insulation effect of the sound insulation cover is ensured.

[0009] Optionally, the protective layer is a PP layer made of PP cloth.

[0010] By adopting the technical scheme, the protective layer made of the PP cloth has a softening point close to that of the re-coating layer, facilitating molding, the production process after the re-coating layer is bonded to the protective layer made of the PP cloth is not changed, the production cost can be reduced, and the production of the sound insulation cover is facilitated.

[0011] Optionally, the sound-absorbing layer is formed by injection molding of PU foam.

[0012] By adopting the technical scheme, the PU foam material has high tensile strength, low density, good plasticity and processability, and facilitates the production of the sound insulation cover.

[0013] Optionally, a fixing gasket made of rubber is fixed at the hole of the fixing hole.

[0014] By adopting the technical scheme, the fixing gasket can be attached to the bolt or nut, reduces loosening of the bolt or nut caused by vibration, reduces damage to the edge caused by abutment of the bolt or nut and the edge of the sound insulation cover, ensures the overall structural strength of the sound insulation cover, reduces damage to the re-coating layer at the abutment position of the sound insulation cover and the bolt or nut, reduces color difference caused by damage at the abutment position of the sound insulation cover and the bolt or nut, and improves the appearance of the sound insulation cover.

[0015] Optionally, a protective sleeve is formed on one side of the fixing gasket, and one end of the protective sleeve is located in the fixing hole.

[0016] By adopting the technical scheme, the filler in the re-coating layer of the inner wall of the fixing hole can be shielded, damage to the edge caused by abutment of the bolt and the inner wall of the sound insulation cover is reduced, the overall structural strength of the sound insulation cover is ensured, and the appearance of the sound insulation cover is improved.

[0017] Optionally, a mounting hole is formed in the half cover.

[0018] By adopting the technical scheme, the fixing device can fix the noise-emitting equipment through the mounting hole,

[0019] Optionally, a sound-absorbing sleeve is bonded in the mounting hole.

[0020] By adopting the technical scheme, noise emitted from the gap between the mounting hole and the fixing device can be reduced, the sound insulation effect of the sound insulation cover is improved, and damage to the re-coating layer caused by collision between the inner wall of the mounting hole and the fixing device during operation of the noise-emitting equipment is reduced.

[0021] Optionally, a sound-absorbing gasket is bonded to one end of the sound-absorbing sleeve.

[0022] By adopting the technical scheme, damage to the re-coating layer caused by collision between the sound insulation cover and the fixing device can be reduced, color difference caused by collision between the mounting hole and the fixing device can be reduced, and the appearance of the sound insulation cover is improved.

[0023] In summary, the application has the following technical effects:

[0024] 1. By setting the protective layer, the surface hardness of the soundproof cover can be increased, and the overall structural strength of the soundproof cover can be increased. The protective layer can reduce scratches and damage on the surface of the heavy coating during transportation and use, and protect the soundproof effect of the soundproof cover.

[0025] 2. By setting the fixing washer and the protective sleeve, the soundproof cover can be attached to the bolt or nut, reducing the loosening of the bolt or nut due to vibration, reducing damage to the edge caused by the abutment of the bolt or nut and the soundproof cover, protecting the overall structural strength of the soundproof cover, reducing damage to the heavy coating at the abutment of the soundproof cover and the bolt or nut, reducing color difference caused by damage at the abutment of the soundproof cover and the bolt or nut, and improving the appearance of the soundproof cover.

[0026] 3. By setting the sound-absorbing sleeve, the noise transmitted from the gap between the mounting hole and the fixing device can be reduced, the soundproof effect of the soundproof cover can be improved, and the damage to the heavy coating caused by the collision between the inner wall of the mounting hole and the fixing device due to vibration during the operation of the noise-emitting device can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the outer shape structure diagram of the application;

[0028] Figure 2 is the cross-sectional structure diagram of the half cover of the application.

[0029] Reference signs: 1, half cover; 11, heavy coating; 12, protective layer; 13, sound-absorbing layer; 2, inner cavity; 3, edge; 4, mounting hole; 41, sound-absorbing sleeve; 42, soundproof washer; 5, fixing hole; 51, fixing washer; 52, protective sleeve. DETAILED DESCRIPTION

[0030] The application will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] The application discloses a soundproof cover, which refers to Figure 1 and Figure 2The sound insulation cover comprises a half cover 1, the half cover 1 is made by preheating, vacuum suction, molding and trimming of a heavy coating layer 11 with a protective layer 12 bonded, the heavy coating layer 11 is made of a high-filled barium sulfate of an alkenyl elastomer material, the protective layer 12 is made of a PP cloth, the half cover 1 is processed to form an inner cavity 2 and a rim 3, the inner wall of the inner cavity 2 is the heavy coating layer 11, the rim 3 is arranged along the edge of the inner cavity 2 and the side away from the inner cavity 2 is a plane, the side of the heavy coating layer 11 away from the protective layer 12 is formed with a sound absorption layer 13 by injection molding foaming, the sound absorption layer 13 is made of PU foaming, the inner cavity 2 of the half cover 1 is provided with a plurality of mounting holes 4 for fixing the noise-emitting equipment, the rim 3 of the half cover 1 is provided with a plurality of fixing holes 5.

[0033] When the sound insulation cover is used, the half cover 1 is covered on the side of the noise-emitting equipment, and the half cover 1 is attached to the rim 3 of the other half cover 1 and the inner cavities 2 are opposite, at this time, the two half covers 1 wrap the noise-emitting equipment, and the fixing holes 5 of the two half covers 1 correspond to each other, after the two half covers 1 are fixed by bolts, the fixing device is fixed through the mounting holes 4 to fix the noise-emitting equipment, the protective layer 12 can increase the surface hardness of the sound insulation cover, and at the same time, increase the overall structural strength of the sound insulation cover, the protective layer 12 can reduce scratches and damage on the surface of the heavy coating layer 11 during transportation and use, and protect the sound insulation effect of the sound insulation cover.

[0034] The protective layer 12 made of the PP cloth has a softening point close to the heavy coating layer 11, which is convenient for processing and molding, the production process of the heavy coating layer 11 after bonding the protective layer 12 made of the PP cloth does not change, which can reduce the production cost and facilitate the production of the sound insulation cover. The tensile strength of the PU foaming material is high, and has a low density, good plasticity and processability, which is convenient for the production of the sound insulation cover. When the sound insulation cover is used, the protective layer 12 made of the PP cloth can block the fillers in the heavy coating layer 11, protect the stability of the sound insulation effect of the heavy coating layer 11, protect the sound insulation effect of the sound insulation cover, reduce the color difference formed after the sound insulation cover is knocked or scratched, and improve the aesthetics of the sound insulation cover.

[0035] Example two

[0036] The difference between the present embodiment and example one is that:

[0037] Reference Figure 2The soundproof cover further comprises a fixing gasket 51 made of rubber, which is bonded to the opening of the fixing hole 5 away from the inner cavity 2, and a protective sleeve 52 formed on the side of the fixing gasket 51 facing the opening of the fixing hole 5, with one end of the protective sleeve 52 connected to the fixing gasket 51 and the other end extending along the inner wall of the fixing hole 5 to the end of the fixing hole 5 away from the fixing gasket 51. When the two half covers 1 are fixed by bolts, the protective sleeve 52 can shield the filler in the re-coating layer 11 of the inner wall of the fixing hole 5, reducing the damage to the edge 3 caused by the abutment of the bolts and the inner wall of the fixing hole 5, and the fixing gasket 51 can be attached to the bolts or nuts, reducing the loosening of the bolts or nuts caused by vibration, reducing the damage to the edge 3 caused by the abutment of the bolts or nuts and the edge 3, ensuring the overall structural strength of the soundproof cover, reducing the damage to the re-coating layer 11 at the abutment of the soundproof cover and the bolts or nuts, reducing the color difference caused by the damage at the abutment of the soundproof cover and the bolts or nuts, and improving the aesthetics of the soundproof cover.

[0038] With reference to Figure 2 The inner wall of the mounting hole 4 is bonded with an acoustic absorbing sleeve 41 made of fiber cotton, and the end of the acoustic absorbing sleeve 41 away from the inner cavity 2 is bonded with a sound insulation gasket 42 made of rubber. After the noise-emitting device is fixed through the mounting hole 4, the acoustic absorbing sleeve 41 can reduce the noise transmitted from the gap between the mounting hole 4 and the fixing device, improve the sound insulation effect of the soundproof cover, and at the same time reduce the damage to the re-coating layer 11 caused by the collision between the inner wall of the mounting hole 4 and the fixing device due to the vibration generated by the noise-emitting device during operation, and the sound insulation gasket 42 can reduce the damage to the re-coating layer 11 caused by the collision between the soundproof cover and the fixing device, reduce the color difference caused by the collision between the mounting hole 4 and the fixing device, and improve the aesthetics of the soundproof cover.

[0039] The specific embodiments are only an explanation of the present application, which is not a limitation of the present application, and those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A sound shield, characterized by: The soundproof cover comprises a half cover (1) which is made of a heavy coating layer (11) with a protective layer (12) through preheating, vacuum suction, molding and trimming, the half cover (1) is processed to form an inner cavity (2) and a rim (3), the inner wall of the inner cavity (2) is the heavy coating layer (11), the rim (3) is arranged along the edge of the inner cavity (2), one side of the heavy coating layer (11) is processed to form a sound absorption layer (13), and a fixing hole (5) is formed in the rim (3).

2. A sound shield according to claim 1, characterised in that: The protective layer (12) is a PP layer made of PP cloth.

3. A sound shield according to claim 2, wherein: The sound absorption layer (13) is formed by injection molding foaming of PU foaming.

4. A sound shield according to claim 1, wherein: A fixing gasket (51) is fixedly connected at the hole of the fixing hole (5), and the fixing gasket (51) is made of rubber.

5. A sound shield according to claim 4, wherein: One side of the fixing gasket (51) is processed to form a protective sleeve (52), and one end of the protective sleeve (52) is located in the fixing hole (5).

6. A sound shield according to claim 1, wherein: The half cover (1) is provided with a mounting hole (4).

7. A sound shield according to claim 6, characterised in that: The mounting hole (4) is bonded with a sound absorption sleeve (41).

8. A sound shield according to claim 7, characterised in that: One end of the sound absorption sleeve (41) is bonded with a sound insulation gasket (42).

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