CN213649495U - Improve sound insulation pad of fire-retardant syllable-dividing effect of car - Google Patents
Improve sound insulation pad of fire-retardant syllable-dividing effect of car Download PDFInfo
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- CN213649495U CN213649495U CN202022365075.3U CN202022365075U CN213649495U CN 213649495 U CN213649495 U CN 213649495U CN 202022365075 U CN202022365075 U CN 202022365075U CN 213649495 U CN213649495 U CN 213649495U
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Abstract
The utility model belongs to the technical field of the car gives sound insulation, especially, relate to an improve sound insulation pad of fire-retardant syllable-dividing effect of car. The sound insulation frame is characterized in that a plurality of supporting fixed beams are arranged on the surface of the lower end of the sound insulation frame, low-frequency absorption plates are connected between the supporting fixed beams, sound absorption cotton is arranged inside the sound insulation frame, the outer surface of the sound absorption cotton is a concave-convex absorption corrugated surface, and a low-frequency attenuation bin is arranged between the concave-convex absorption corrugated surface and the low-frequency absorption plates; the back of the sound insulation frame is provided with a butyl rubber vibration damping plate; the sound insulation frame and the butyl rubber vibration damping plate are fixed in the machine cover through fixing rivets on the outer ring of the sound insulation frame. The low-frequency absorption cavity is established on the basis of the traditional vibration damping plate, so that low-frequency noise generated by an automobile engine can be effectively eliminated; the driving comfort is improved.
Description
Technical Field
The utility model belongs to the technical field of the car gives sound insulation, especially, relate to an improve sound insulation pad of fire-retardant syllable-dividing effect of car.
Background
The noise in the vehicle is mainly composed of noise of mechanical components such as an engine, friction sound of tires and the ground, collision and friction sound generated by breaking an air curtain by the vehicle, sound transmitted into the vehicle from an external environment, internal noise generated by vibration of parts such as an inner decorative plate in a cab and the like.
The noise in the vehicle is mainly low-frequency noise, has strong penetrability and is a part which is difficult to process in the acoustic sound insulation technology; adopt traditional range upon range of formula amortization cotton not obvious to low frequency noise elimination effect, this application provides an improve sound-proof structure of fire-retardant syllable-dividing effect of car.
SUMMERY OF THE UTILITY MODEL
Aiming at solving the problems of the defects and the shortcomings of the prior art; the utility model aims at providing a sound insulation pad which has simple structure, reasonable design and convenient use and can improve the flame-retardant sound insulation effect of an automobile, and establishes a low-frequency absorption cavity on the basis of the traditional vibration damping plate, thereby effectively eliminating the low-frequency noise generated by an automobile engine; the driving comfort is improved.
In order to achieve the above object, the utility model adopts the following technical scheme: the device comprises a sound insulation frame, a supporting fixed beam, a low-frequency absorption plate, sound absorption cotton, a concave-convex absorption corrugated surface, a butyl rubber vibration damping plate, a fixed rivet and a low-frequency attenuation bin; the sound insulation frame is characterized in that a plurality of supporting fixed beams are arranged on the surface of the lower end of the sound insulation frame, low-frequency absorption plates are connected between the supporting fixed beams, sound absorption cotton is arranged inside the sound insulation frame, the outer surface of the sound absorption cotton is a concave-convex absorption corrugated surface, and a low-frequency attenuation bin is arranged between the concave-convex absorption corrugated surface and the low-frequency absorption plates; the back of the sound insulation frame is provided with a butyl rubber vibration damping plate; the sound insulation frame and the butyl rubber vibration damping plate are fixed in the machine cover through fixing rivets on the outer ring of the sound insulation frame.
Preferably, the outside of the sound insulation frame is provided with a circle of riveting and fixing hole grooves
Preferably, the low-frequency absorption plate is tightly welded on the sound insulation frame, and the inner surface of the low-frequency absorption plate is fixed through a keel frame.
Preferably, the sound-absorbing cotton is in a porous loose structure, and the surface of the sound-absorbing cotton is uniformly provided with conical convex columns and grooves.
Preferably, a flame-retardant silencing cotton pad is adhered to the inside of the low-frequency absorption plate.
After the structure is adopted, the utility model discloses beneficial effect does: the low-frequency absorption cavity is established on the basis of the traditional vibration damping plate, so that low-frequency noise generated by an automobile engine can be effectively eliminated; the driving comfort is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail by the following specific embodiments and the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the back structure of the present invention;
description of reference numerals: the sound insulation structure comprises a sound insulation frame 1, a supporting fixed beam 2, a low-frequency absorption plate 3, sound absorption cotton 4, a concave-convex absorption corrugated surface 5, a butyl rubber vibration damping plate 6, a fixed rivet 7, a low-frequency attenuation bin 8 and a riveting fixed hole groove 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.
Referring to fig. 1 and 2, the following technical solutions are adopted in the present embodiment: the device comprises a sound insulation frame 1, a supporting fixed beam 2, a low-frequency absorption plate 3, sound absorption cotton 4, a concave-convex absorption corrugated surface 5, a butyl rubber vibration damping plate 6, a fixed rivet 7 and a low-frequency attenuation bin 8; the sound insulation structure is characterized in that a plurality of supporting fixed beams 2 are arranged on the surface of the lower end of the sound insulation frame 1, low-frequency absorption plates 3 are connected between the supporting fixed beams 2, sound absorption cotton 4 is arranged inside the sound insulation frame 1, the outer surface of the sound absorption cotton 4 is a concave-convex absorption corrugated surface 5, and a low-frequency attenuation bin 8 is arranged between the concave-convex absorption corrugated surface 5 and the low-frequency absorption plates 3; the back of the sound insulation frame 1 is provided with a butyl rubber vibration damping plate 6; the sound insulation frame 1 and the butyl rubber vibration damping plate 6 are fixed in the machine cover through fixing rivets 7 on the outer ring of the sound insulation frame 1.
Wherein, the outer side of the sound insulation frame 1 is provided with a circle of riveting and fixing hole grooves 9; the low-frequency absorption plate 3 is tightly welded on the sound insulation frame 1, and the inner surface of the low-frequency absorption plate is fixed through a keel frame; the sound-absorbing cotton 4 is of a porous loose structure, and tapered convex columns and grooves are uniformly arranged on the surface of the sound-absorbing cotton; the low-frequency absorption plate 3 is internally stuck with a flame-retardant silencing cotton pad.
The working principle of the specific embodiment is as follows: a low-frequency attenuation bin 8 is established on the inner side of the engine cover, and when the noise of the engine penetrates through the low-frequency absorption plate 3 and enters the low-frequency attenuation bin 8, the low-frequency transmission can be effectively reduced by absorbing resonance; in addition, the concave-convex structure and the porous loose structure on the surface of the sound-absorbing cotton 4 can effectively absorb a large amount of engine noise and improve the driving comfort.
After adopting above-mentioned structure, this embodiment beneficial effect does: the low-frequency absorption cavity is established on the basis of the traditional vibration damping plate, so that low-frequency noise generated by an automobile engine can be effectively eliminated; the driving comfort is improved.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides an improve sound insulation pad of fire-retardant syllable-dividing effect of car which characterized in that: the device comprises a sound insulation frame (1), a supporting fixed beam (2), a low-frequency absorption plate (3), sound absorption cotton (4), a concave-convex absorption corrugated surface (5), a butyl rubber vibration damping plate (6), a fixed rivet (7) and a low-frequency attenuation bin (8); the sound insulation structure is characterized in that a plurality of supporting fixed beams (2) are arranged on the surface of the lower end of the sound insulation frame (1), low-frequency absorption plates (3) are connected among the supporting fixed beams (2), sound absorption cotton (4) is arranged inside the sound insulation frame (1), the outer surface of the sound absorption cotton (4) is a concave-convex absorption corrugated surface (5), and a low-frequency attenuation bin (8) is arranged between the concave-convex absorption corrugated surface (5) and the low-frequency absorption plates (3); a butyl rubber vibration damping plate (6) is arranged on the back of the sound insulation frame (1); the sound insulation frame (1) and the butyl rubber vibration damping plate (6) are fixed in the machine cover through fixing rivets (7) on the outer ring of the sound insulation frame (1).
2. The sound insulation pad for improving the flame-retardant and sound-insulation effect of the automobile according to claim 1, characterized in that: and a circle of riveting fixing hole groove (9) is arranged on the outer side of the sound insulation frame (1).
3. The sound insulation pad for improving the flame-retardant and sound-insulation effect of the automobile according to claim 1, characterized in that: the low-frequency absorption plate (3) is welded on the sound insulation frame (1) in a tight manner, and the inner surface of the low-frequency absorption plate is fixed through a keel frame.
4. The sound insulation pad for improving the flame-retardant and sound-insulation effect of the automobile according to claim 1, characterized in that: the sound-absorbing cotton (4) is of a porous loose structure, and the surface of the sound-absorbing cotton is uniformly provided with conical convex columns and grooves.
5. The sound insulation pad for improving the flame-retardant and sound-insulation effect of the automobile according to claim 1, characterized in that: the low-frequency absorption plate (3) is internally stuck with a flame-retardant silencing cotton pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022365075.3U CN213649495U (en) | 2020-10-21 | 2020-10-21 | Improve sound insulation pad of fire-retardant syllable-dividing effect of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022365075.3U CN213649495U (en) | 2020-10-21 | 2020-10-21 | Improve sound insulation pad of fire-retardant syllable-dividing effect of car |
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| Publication Number | Publication Date |
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| CN213649495U true CN213649495U (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022365075.3U Active CN213649495U (en) | 2020-10-21 | 2020-10-21 | Improve sound insulation pad of fire-retardant syllable-dividing effect of car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670758A (en) * | 2022-03-31 | 2022-06-28 | 东风商用车有限公司 | Cotton mounting structure of sound and vehicle are inhaled to car |
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2020
- 2020-10-21 CN CN202022365075.3U patent/CN213649495U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670758A (en) * | 2022-03-31 | 2022-06-28 | 东风商用车有限公司 | Cotton mounting structure of sound and vehicle are inhaled to car |
| CN114670758B (en) * | 2022-03-31 | 2023-05-30 | 东风商用车有限公司 | Mounting structure and vehicle of cotton are inhaled to car |
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