CN206416955U - Cover sound insulating pad and apply its automobile - Google Patents
Cover sound insulating pad and apply its automobile Download PDFInfo
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- CN206416955U CN206416955U CN201720014751.8U CN201720014751U CN206416955U CN 206416955 U CN206416955 U CN 206416955U CN 201720014751 U CN201720014751 U CN 201720014751U CN 206416955 U CN206416955 U CN 206416955U
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- insulating pad
- sound insulating
- noise
- pit
- cover
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Abstract
The utility model provides a kind of cover sound insulating pad and applies its automobile, it is related to car noise abatement technical field, the problem of automobile making cost is dramatically increased must be caused when reducing enging cabin noise using existing cover sound insulating pad from more expensive material and bigger material thickness by solving.The cover sound insulating pad that the utility model embodiment is provided is used to cut down the noise of engine, and the cover sound insulating pad includes being formed with pit on sound insulation pad body, the sound insulation pad body, and the opening of the pit is towards engine.The automobile that the utility model embodiment is provided includes above-mentioned cover sound insulating pad.
Description
Technical field
The utility model is related to car noise abatement technology, more particularly to a kind of cover sound insulating pad and applies its automobile.
Background technology
During automobile routine use, driving cabin Main Noise Sources are divided into engine compartment noise and road rumble.Subdivision
Engine compartment noise overwhelming majority contribution amount is that engine operates the noise produced, removes the lifting of engine self-technique, with
Reduce the generation of noise, the important channel of control engine compartment noise is exactly that engine noise is inhaled by cover sound insulating pad
Receive decay.
At present, traditional cover sound insulating pad is laid in directly over engine using " flat board " structure, and passes through fastener
On the cover of automobile.The material and material thickness of the good and bad and selected material of cover sound insulating pad absorption of noise performance are relevant
System.Think the sound absorbing capabilities of lifting cover sound insulating pad, reduce the noise of enging cabin, improve driving cabin environment, must just select into
Ben Genggao material increases material thickness, but no matter selects which kind of scheme, can cause dramatically increasing for automobile making cost.
Utility model content
The utility model provides a kind of cover sound insulating pad and applies its automobile, solves using existing cover sound insulating pad
It must cause what automobile making cost dramatically increased to ask from more expensive material and bigger material are thick during reduction enging cabin noise
Topic.
On the one hand the utility model embodiment provides a kind of cover sound insulating pad, the noise for cutting down engine, wherein, institute
Stating cover sound insulating pad includes being formed with pit on sound insulation pad body, the sound insulation pad body, and the opening of the pit is described in
Engine.
Further, the pit is shaped as radar bowl-type.
Alternatively, the depth of the pit and the intensity of the noise are proportional.
Alternatively, the sound insulating pad body surface beyond the pit opening has sound-absorption hole.
Alternatively, there is the sound insulating pad body surface beyond the pit opening sudden strain of a muscle to split sound-absorbing structure.
Further, the sound insulation pad body is formed with multiple pits, and multiple pits are along the noise intensity
Maximum positional symmetry is set.
Alternatively, the pit has smooth surface.
On the other hand the utility model embodiment provides a kind of automobile, including the cover sound insulating pad described in any of the above item.
Cover sound insulating pad and apply in its automobile that the utility model is provided, pass through and are formed on cover sound insulation pad body
The pit being open towards engine so that pit can be after the noise that engine is produced be received, using pit surface reflection simultaneously
Influx noise, sound source is reflected back so as to be formed, and is reflected back after sound source and noise meet, is cancelled out each other, therefore engine can be produced
Raw noise is cut down.It can just cut down engine due to only needing to the increase bowl configurations on original cover sound insulation pad body
Noise, it is to avoid using more expensive material and the thick bigger cover sound insulating pad of material, therefore significantly reduce the cost of automobile making.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the cover sound insulating pad that the utility model embodiment 1 is provided；
Fig. 2 is the structure principle chart that the cover sound insulating pad that the utility model embodiment 1 is provided cuts down engine noise；
Fig. 3 is the waveform schematic diagram that the cover sound insulating pad that the utility model embodiment 1 is provided cuts down engine noise；
Fig. 4 is the partial section for the cover sound insulating pad that the formation that the utility model embodiment 1 is provided has sound-absorption hole；
Fig. 5 be the utility model embodiment 1 provide formation have sudden strain of a muscle split sound-absorbing structure cover sound insulating pad partial cross section
Figure.
Reference：
11- sound insulation pad bodies；12- pits；13- line of symmetries；
21- engines；22- engine noises；23- is reflected back sound source；
31- composite noises；41- suction holes；51-, which dodges, splits sound-absorbing structure.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Embodiment 1
Fig. 1 is the structural representation for the cover sound insulating pad that the utility model embodiment 1 is provided, and Fig. 2 is that the utility model is real
The cover sound insulating pad for applying the offer of example 1 cuts down the structure principle chart of engine noise.
The cover sound insulating pad that the present embodiment is provided is used to cut down the noise of engine, as depicted in figs. 1 and 2, the cover every
Sound pad includes sound insulation pad body 11, is formed with pit 12 on sound insulation pad body 11, and the opening of the pit is towards engine 21.
After automobile engine 21 starts, engine noise 22 is produced, when noise reaches cover sound insulation pad body 11, from cover
The opening of pit 12 enters pit 12 on sound insulation pad body 11.When noise reaches 12 surface of pit, pit 12 is played instead to noise
The effect penetrated and converged, formation is reflected back sound source 23, is reflected back the engine noise 22 that sound source 23 produces with engine 21 and meets
Afterwards, cancel out each other, so as to reach the purpose of abatement engine noise 22.
Fig. 3 is the waveform schematic diagram that the cover sound insulating pad that the utility model embodiment 1 is provided cuts down engine noise.As schemed
Shown in 3, the waveform of engine noise 22 be reflected back the waveform phase of sound source 23 on the contrary, the two is superimposed after, cancel out each other, formed
Composite noise 31, the amplitude of composite noise 31 is obviously reduced compared to the amplitude of engine noise 22 that engine is produced.
The cover sound insulating pad that the present embodiment is provided, by forming opening on cover sound insulation pad body towards the recessed of engine
Hole so that pit can be after the noise that engine is produced be received, using pit surface reflection and influx noise, so as to form anti-
Sound source is emitted back towards, is reflected back after sound source and noise meet, cancels out each other, therefore the noise that engine is produced can be cut down.By
Engine noise can just be cut down in only needing to the increase bowl configurations on original cover sound insulation pad body, it is to avoid use more expensive material
Matter and the thick bigger cover sound insulating pad of material, therefore significantly reduce the cost of automobile making.
In above-described embodiment, the shape of pit 12 can be radar bowl-type.It is demonstrated experimentally that using the pit 12 of the shape,
Can preferably reflecting background, more increase is reflected back the amplitude of sound source.Certainly, the present embodiment not limited to this, not merely
For engine noise, the noise that other noise sources outside engine are produced is can be used for, for different noise sources, pit
12 shape can reach best reflecting effect from other shapes.
In above-described embodiment, the depth of pit 12 can be proportional with the intensity of noise.The depth of pit 12 is bigger, its table
Area is bigger, reflection and aggregation effect it is better, when the intensity of noise is bigger, it is necessary to the intensity for being reflected back sound source it is also more big more
It is good, so can preferably abating noises.
In addition, Fig. 4 is the partial cross section for the cover sound insulating pad that the formation that the utility model embodiment 1 is provided has sound-absorption hole
Figure, Fig. 5 be the utility model embodiment 1 provide formation have sudden strain of a muscle split sound-absorbing structure cover sound insulating pad partial section.Such as
Shown in Fig. 4 and Fig. 5, in the above embodiments, the surface of sound insulation pad body 11 beyond pit 12 is open can have sound-absorption hole 41.
By increasing sound-absorption hole, absorbability of the cover sound insulating pad to noise can be improved.In addition, other sound-absorbing structures can also
The surface of sound insulation pad body 11 provided in the present embodiment is applied, such as surface of sound insulation pad body 11 beyond the opening of pit 12 is set
Put sudden strain of a muscle and split sound-absorbing structure 51.
In above-described embodiment, as shown in figure 1, sound insulation pad body 11 could be formed with multiple pits 12, multiple pits 12
It can be set along the maximum positional symmetry of noise intensity., can be corresponding in the case that correspondence noise source is concentrated and is symmetric
Ground forms multiple pits 12 on sound insulation pad body 11, and multiple pits 12 is set along the maximum positional symmetry of noise intensity,
The line of symmetry 13 shown in Fig. 1 is the maximum position of noise intensity, and shows that multiple pits 12 are symmetrical along line of symmetry 13
Form, be arranged such, can cut down to greatest extent engine generation noise.Certainly, the utility model not limited to this is recessed
The size in hole 12, how many and distribution form, can be according to specific vehicle, and the model of engine is selected.
In above-described embodiment, pit 12 can have smooth surface.The implementation method of smooth surface can have a variety of, such as throw
Light, plated film etc., smooth surface can lift the albedo of pit 12, it is to avoid weaken reflective echo too much in reflection process
The intensity in source, so as to preferably cut down the noise of engine.
In above-described embodiment, pit 12 is integrally formed with the hot pressing of sound insulation pad body 11.The process costs of hot pressing are low, and utilize
Mould can be with mass production, and precision is high.
The cover sound insulating pad that above-described embodiment is provided, by forming opening on cover sound insulation pad body towards engine
Pit so that pit can be after the noise that engine is produced be received, using pit surface reflection and influx noise, so as to be formed
Sound source is reflected back, is reflected back after sound source and noise meet, cancels out each other, therefore the noise that engine is produced can be cut down.
Engine noise can just be cut down due to only needing to the increase bowl configurations on original cover sound insulation pad body, it is to avoid using more expensive
Material and the thick bigger cover sound insulating pad of material, therefore significantly reduce the cost of automobile making.
Embodiment 2
A kind of automobile is present embodiments provided, the automobile includes the cover sound insulating pad that above-described embodiment 1 is described.
In the automobile that the present embodiment is provided, due to the cover sound insulating pad for having used above-described embodiment 1 to provide so that in pit
Being reflected back sound source and being met with noise for middle formation, cancels out each other, therefore the noise that engine is produced can be cut down.Due to
Engine noise can just be cut down by only needing to the increase bowl configurations on original cover sound insulation pad body, it is to avoid use more expensive material
The bigger cover sound insulating pad with material thickness, therefore significantly reduce the cost of automobile making.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technology of the utility model
The scope of scheme.
Claims (8)
1. a kind of cover sound insulating pad, the noise for cutting down engine, it is characterised in that the cover sound insulating pad includes sound insulating pad
It is formed with pit on body, the sound insulation pad body, the opening of the pit is towards the engine.
2. cover sound insulating pad according to claim 1, it is characterised in that the pit is shaped as radar bowl-type.
3. cover sound insulating pad according to claim 1, it is characterised in that the depth of the pit and the intensity of the noise
It is proportional.
4. cover sound insulating pad according to claim 1, it is characterised in that the sound insulation advance capital for beyond the pit opening
Body surface face has sound-absorption hole.
5. cover sound insulating pad according to claim 1, it is characterised in that the sound insulation advance capital for beyond the pit opening
There is sudden strain of a muscle to split sound-absorbing structure in body surface face.
6. cover sound insulating pad according to claim 1, it is characterised in that the sound insulation pad body is formed with multiple described recessed
Hole, multiple pits are set along the maximum positional symmetry of the noise intensity.
7. cover sound insulating pad according to claim 1, it is characterised in that the pit has smooth surface.
8. a kind of automobile, it is characterised in that include the cover sound insulating pad described in any one of claim 1~7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720014751.8U CN206416955U (en) | 2017-01-06 | 2017-01-06 | Cover sound insulating pad and apply its automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720014751.8U CN206416955U (en) | 2017-01-06 | 2017-01-06 | Cover sound insulating pad and apply its automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206416955U true CN206416955U (en) | 2017-08-18 |
Family
ID=59573489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720014751.8U Active CN206416955U (en) | 2017-01-06 | 2017-01-06 | Cover sound insulating pad and apply its automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206416955U (en) |
-
2017
- 2017-01-06 CN CN201720014751.8U patent/CN206416955U/en active Active
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