CN206012724U - The car body right vertical beam of the first denoising device, the second denoising device and energy noise reduction - Google Patents
The car body right vertical beam of the first denoising device, the second denoising device and energy noise reduction Download PDFInfo
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- CN206012724U CN206012724U CN201621002922.7U CN201621002922U CN206012724U CN 206012724 U CN206012724 U CN 206012724U CN 201621002922 U CN201621002922 U CN 201621002922U CN 206012724 U CN206012724 U CN 206012724U
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Abstract
The utility model discloses a kind of first denoising device, including the first skeleton and the first foaming body, first skeleton is provided with the first clamp and the second clamp, first foaming body is fixed on the first skeleton by the first clamp, and first skeleton is fixed in the cavity of car body right vertical beam by the second clamp.The invention also discloses a kind of second denoising device, including the second skeleton and the second foaming body, second skeleton is provided with the first clamp and the second clamp, second foaming body is fixed on the second skeleton by the first clamp, and second skeleton is fixed in the cavity of car body right vertical beam by the second clamp.The invention also discloses a kind of car body right vertical beam of energy noise reduction, is provided with the first denoising device described in the utility model in the cavity at the middle part of car body right vertical beam；The second denoising device described in the utility model is provided with the cavity of the root of car body right vertical beam.This utility model can reduce the roar of in-car.
Description
Technical field
This utility model belongs to vehicle body NVH technology, and in particular to a kind of first denoising device, the second denoising device and energy
The car body right vertical beam of noise reduction.
Background technology
At present, in automobile market with keen competition, the synthesis " performance ratio " with class vehicle in terms of traditional performance is more
Come closer to higher level, therefore, the riding comfort for improving vehicle becomes new focus of the competition, and wherein NVH performances are occupied
Main status.Car internal car noise is the importance for evaluating vehicle ride comfort and product quality, studies internal car noise
Analysis and control method are significant.
The excitation being subject to mainly due to cavity of thundering is coupled with the mode of cavity, and cavity produces resonance, so as to send out
Go out larger sound.In-car roar is vibrated and operatic tunes modal coupling mainly due to the plate surrounded with the operatic tunes, when vibration quilt
After the vibration of some parts is amplified on car, cause body panel vibration big, caused by evoking spectrogram parameter.For car, as long as
There is vibration in vehicle body wallboard part, will form coupling with cavity, and the vibration of body panel is delivered to cavity, causes shaking for cavity
Dynamic, produce structure-borne sound.Row energization is entered to cavity with the vibration of spoke value identical different frequency, when driving frequency and the mode frequency of cavity
Rate has when necessarily keeping away frequency, and the vibration of cavity is not violent, and the structure-borne sound of generation is also less, when driving frequency and certain mould of the operatic tunes
State identical or relatively when, cavity will resonate, and the sound of generation can be big more than the frequency acoustic for not occurring to resonate
Much, when resonance acutely to a certain extent when, people in the cavities can perceived sounds big, its energy is concentrated mainly on low frequency, spy
It is not that the subjective sensation that gives people is a kind of " roar ", i.e., usually said " Booming ", energy in 20-200Hz frequency bands
Cause the sense of discomfort that passenger is strong.
On automobile, the sheet metal component due to surrounding the operatic tunes is thin-wall part, own frequency also than relatively low, in generation of thundering
When, in addition to sheet metal component is to cavity excitation, cavity also can encourage body panel in turn, make plate vibrate increase, and this can lead again
Cause cavity vibration more acutely, just because of this, when occurring thundering in Vehicle Accelerating Period, the sound pressure level that often thunders is compared not
Can be higher when thundering.Problems are most to be occurred in relatively low frequency range, and conventional sqouynd absorption lowering noise measure is nearly unavailable.
And optimization cycle is longer, rectification part is more, difficulty is big, is affected greatly by arrangement.
Content of the invention
The car body that the purpose of this utility model is to provide a kind of first denoising device, the second denoising device and energy noise reduction is right
Longeron, to reduce the roar of in-car.
First denoising device described in the utility model, including the first skeleton and the first foaming body, on first skeleton
The first clamp and the second clamp is provided with, first foaming body is fixed on the first skeleton by the first clamp, first bone
Frame is fixed on by the second clamp in the cavity of car body right vertical beam.
First skeleton is made using heat-resisting nylon material, and first foaming body is made using expandable filler.
Second denoising device described in the utility model, including the second skeleton and the second foaming body, on second skeleton
The first clamp and the second clamp is provided with, second foaming body is fixed on the second skeleton by the first clamp, second bone
Frame is fixed on by the second clamp in the cavity of car body right vertical beam.
Second skeleton is made using heat-resisting nylon material, and second foaming body is made using expandable filler.
The car body right vertical beam of energy noise reduction described in the utility model, is provided with this reality in the cavity at the middle part of car body right vertical beam
With new the first described denoising device, cavity passage herein can be filled after the completion of first foaming body foaming full；
The second denoising device described in the utility model is provided with the cavity of the root of car body right vertical beam, is sent out in second foaming body
Can be full by cavity passage filling herein after the completion of bubble.
The beneficial effects of the utility model：
（1）Making an uproar caused by car body right vertical beam resonance of the frequency range substantially in 115Hz～130Hz can effectively be reduced
Sound, reaching improves the effect of roar in car；
（2）The middle part of car body right vertical beam and the rigidity of root can be improved；
（3）Body construction need not be changed.
Description of the drawings
Fig. 1 is the structural representation of the first denoising device described in the utility model；
Fig. 2 is the structural representation of the second denoising device described in the utility model；
Fig. 3 is the structural representation of the car body right vertical beam of energy noise reduction described in the utility model；
Fig. 4 is the internal car noise frequency spectrum of the car body right vertical beam of existing car body right vertical beam and the energy noise reduction shown in this utility model
Change comparison diagram.
In figure：1st, the first clamp, the 2, first skeleton, the 3, second clamp, the 4, first foaming body, 5. the second skeleton, 6. second
Foaming body, 7, car body right vertical beam, 8, cavity, the 9, first denoising device, the 10, second denoising device.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
The first as shown in Figure 1 denoising device, including the first skeleton 2 and the first foaming body 4, the first skeleton 2 is provided with the
One clamp 1 and the second clamp 3, the first foaming body 4 are fixed on the first skeleton 2 by the first clamp 1, and the first skeleton 2 is by the
Two clamps 3 are fixed in the cavity of car body right vertical beam 7.First skeleton 2 is made using heat-resisting nylon material, and the first skeleton 2 is used for
First foaming body 4 is fixed in the cavity of car body right vertical beam 7.First foaming body 4 is using the foam filled material with high rigidity
Material is made, can be with foaming and intumescing after the expandable filler heating of high rigidity.The expandable filler of high rigidity is not only improved
The effect of rigidity, while the features such as having light weight, easy-formation, do not affected by arrangement.
The second as shown in Figure 2 denoising device, including the second skeleton 5 and the second foaming body 6, the second skeleton 5 is provided with the
One clamp 1 and the second clamp 3, the second foaming body 6 are fixed on the second skeleton 5 by the first clamp 1, and the second skeleton 5 is by the
Two clamps 3 are fixed in the cavity of car body right vertical beam 7.Second skeleton 5 is made using heat-resisting nylon material, and the second foaming body 6 is adopted
Made with the expandable filler of high rigidity.
The car body right vertical beam of energy noise reduction as shown in Figure 3, is provided with this practicality in the cavity 8 at the middle part of car body right vertical beam 7
The first new denoising device 9, when car body right vertical beam 7 is after electrophoresis, baking process flow process, the foaming of the first foaming body 4 is completed,
Can be full by cavity passage filling herein；I.e. before the first foaming body 4 is unexpanded, in the cross-sectional direction of car body right vertical beam 7
On, there is between the first denoising device 9 and car body right vertical beam 7 gap, the gap can be filled out after the first foaming body 4 foams
Full.The second denoising device 10 of the present utility model is provided with the cavity 8 of the root of car body right vertical beam 7, when car body right vertical beam 7 is passed through
After crossing electrophoresis, baking process flow process, the foaming of the second foaming body 6 is completed, and can be filled with cavity passage herein；I.e. second
Before foaming body 6 is unexpanded, in the cross-sectional direction of car body right vertical beam 7, have between the second denoising device 10 and car body right vertical beam 7
There is gap, the gap can be filled up after the second foaming body 6 foams.By the first denoising device 9 and the second denoising device 10
Increase damping can be played a part of to the resonance of car body right vertical beam 7, frequency range is effectively reduced substantially in 115Hz～130Hz
Car body right vertical beam 7 resonate caused noise.The rigidity at middle part and root based on car body right vertical beam 7 is relatively weak, therefore
The first denoising device 9 is installed at the middle part of car body right vertical beam 7, installs the second denoising device 10 in the root of car body right vertical beam 7, when the
After the completion of one foaming body 4 and the second foaming body 6 foam, additionally it is possible to improve this rigidity at two.Due in the middle part of car body right vertical beam 7 and
The structure of root is different, therefore the first denoising device 9 is different with the structure of the first denoising device 9, but the material that used and function
Identical.
As shown in figure 4, the in-car of the car body right vertical beam of existing car body right vertical beam and the energy noise reduction shown in this utility model is made an uproar
Audio spectrum changes comparison diagram.Internal car noise spectrum line when solid line represents that existing car body right vertical beam runs, dotted line represent that this practicality is new
Internal car noise spectrum line when the car body right vertical beam of the energy noise reduction shown in type runs.As can be drawn from Figure 4 shown in this utility model
Energy noise reduction car body right vertical beam operationally, have significantly improvement by the car body right vertical beam 125Hz noises that cause of resonance.
Claims (5)
1. a kind of first denoising device, it is characterised in that：Including the first skeleton（2）With the first foaming body（4）, first skeleton
（2）It is provided with the first clamp（1）With the second clamp（3）, first foaming body（4）By the first clamp（1）It is fixed on first
Skeleton（2）On, first skeleton（2）By the second clamp（3）It is fixed on car body right vertical beam（7）Cavity in.
2. the first denoising device according to claim 1, it is characterised in that：First skeleton（2）Using high temperature resistant Buddhist nun
Imperial material is made, first foaming body（4）Made using expandable filler.
3. a kind of second denoising device, it is characterised in that：Including the second skeleton（5）With the second foaming body（6）, second skeleton
（5）It is provided with the first clamp（1）With the second clamp（3）, second foaming body（6）By the first clamp（1）It is fixed on second
Skeleton（5）On, second skeleton（5）By the second clamp（3）It is fixed on car body right vertical beam（7）Cavity in.
4. the second denoising device according to claim 3, it is characterised in that：Second skeleton（5）Using heat-resisting nylon
Material is made, second foaming body（6）Made using expandable filler.
5. a kind of can noise reduction car body right vertical beam, it is characterised in that：In car body right vertical beam（7）Middle part cavity（8）Inside it is provided with
First denoising device as claimed in claim 1 or 2（9）, in first foaming body（4）Can be by sky herein after the completion of foaming
Chamber passage filling is full；In car body right vertical beam（7）Root cavity（8）The second noise reduction being inside provided with as described in claim 3 or 4
Device（10）, in second foaming body（6）Can be full by cavity passage filling herein after the completion of foaming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621002922.7U CN206012724U (en) | 2016-08-31 | 2016-08-31 | The car body right vertical beam of the first denoising device, the second denoising device and energy noise reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621002922.7U CN206012724U (en) | 2016-08-31 | 2016-08-31 | The car body right vertical beam of the first denoising device, the second denoising device and energy noise reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206012724U true CN206012724U (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621002922.7U Active CN206012724U (en) | 2016-08-31 | 2016-08-31 | The car body right vertical beam of the first denoising device, the second denoising device and energy noise reduction |
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| CN (1) | CN206012724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113602354A (en) * | 2021-07-26 | 2021-11-05 | 岚图汽车科技有限公司 | Supporting structure, cavity structure and connecting method thereof |
-
2016
- 2016-08-31 CN CN201621002922.7U patent/CN206012724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113602354A (en) * | 2021-07-26 | 2021-11-05 | 岚图汽车科技有限公司 | Supporting structure, cavity structure and connecting method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |