CN203670709U - Transmission housing with vibration and noise reduction function, corresponding automotive transmission and corresponding automobile - Google Patents
Transmission housing with vibration and noise reduction function, corresponding automotive transmission and corresponding automobile Download PDFInfo
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- CN203670709U CN203670709U CN201320671049.0U CN201320671049U CN203670709U CN 203670709 U CN203670709 U CN 203670709U CN 201320671049 U CN201320671049 U CN 201320671049U CN 203670709 U CN203670709 U CN 203670709U
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- transmission
- noise reduction
- metal cover
- transmission housing
- case
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Abstract
The utility model discloses a transmission housing with the vibration and noise reduction function, a corresponding automotive transmission and a corresponding automobile. The transmission housing comprises a resonance acoustic absorption plate, a micro through hole plate assembly and a metal cover plate, wherein the resonance acoustic plate, the micro through hole plate assembly and the metal cover plate are connected in sequence from inside to outside, the micro through hole plate assembly is composed of a plurality of micro through hole plates which are stacked, a plurality of grooves are formed in the bottom surface of the resonance acoustic plate, the metal cover plate is hollow, a plurality of hollow balls are contained in the metal cover plate, and abut against one another, and the two surfaces of the micro through hole plate assembly are fixed to the bottom surface of the metal cover plate and the top surface of the resonance acoustic plate respectively. According to the transmission housing, due to the combined action among the plates, noise generated in the transmission housing can be gradually lowered, acoustic energy can be converted into heat energy to be dissipated, and the vibration and noise reduction function of the transmission housing is achieved; the transmission housing with the vibration and noise reduction function is applicable to various automotive transmissions, and is further applied to various automobiles.
Description
Technical field
The utility model belongs to motor vehicle technology field, relates to speed variator system, specifically a kind of case of transmission of damping noise reduction, and a kind of vehicular transmission with this case of transmission and automobile.
Background technique
Along with improving constantly of automobile research and development technology and people's living standard, people are more and more higher to the demand of the noise producing in reduction automobile running.The noise of automobile is from motor, speed changer, tire, automotive brake and sound signaling device etc., take speed changer as example, when speed changer running, because speed changer inside is without sqouynd absorption lowering noise device, therefore the noise producing at gear engagement, shift process can amplify away by case of transmission radiation, speed changer vibration is strengthened, affect the HNV characteristic of car load.
Model utility content
For solving the above deficiency existing in prior art, the utility model provides a kind of case of transmission of damping noise reduction, by the acting in conjunction of resonance acoustic board, microperforated panel and metal cover board, the noise producing in case of transmission is decayed gradually, and make acoustic energy be converted into heat energy dissipation to fall, realize the function of Shell Damping noise reduction;
Another one object of the present utility model, is to provide a kind of vehicular transmission of the case of transmission with above-mentioned damping noise reduction;
The utility model also has an object, is to provide a kind of automobile with above-mentioned vehicular transmission.
For achieving the above object, the technological scheme that the utility model adopts is as follows:
A case of transmission for damping noise reduction, it comprises the resonance acoustic board, microperforated panel assembly and the metal cover board that join successively from the inside to the outside, wherein microperforated panel assembly has multiple microperforated panels of mutual stack to form;
The bottom surface of described resonance acoustic board is provided with multiple grooves;
Described metal cover board inner hollow, is equipped with multiple hollow spheress that are mutually adjacent to;
Two surfaces of described microperforated panel assembly are separately fixed on the bottom surface of metal cover board, on the end face of resonance acoustic board.
As to restriction of the present utility model, groove is along the setting of being separated by of the expansion direction of resonance acoustic board, and the vertical cross-section of groove is symbol Ω shape.
As another kind of the present utility model is limited, the top of described microperforated panel is wedgelike structure.
As of the present utility model the third limited, described metal cover board and hollow spheres are aluminium matter structure.
The utility model also provides a kind of vehicular transmission, with the case of transmission of above-mentioned damping noise reduction.
The utility model provides a kind of automobile simultaneously, the vehicular transmission that its gear is said structure.
Owing to having adopted technique scheme, compared with prior art, obtained technological progress is the utility model:
1. the case of transmission of damping noise reduction of the present utility model is by the common effect of resonance acoustic board, microperforated panel assembly and metal cover board, the noise producing in case of transmission can be decayed gradually, and make acoustic energy be converted into heat energy dissipation to fall, realize the function of Shell Damping noise reduction;
2. when the groove of resonance acoustic board can make sonic transmissions through its wall, produce friction, and then make sound energy loss, noise decrease;
3. the acoustic impedance of the microperforated panel of wedgelike is large, and sound wave, in narrow space internal vibration friction, can be converted into heat energy loss by acoustic energy and fall;
4. metal cover board adopts metallic aluminium to make, and intensity is high; Hollow spheres adopts metallic aluminium to make, and can gather acoustic wave energy, reaches the object of sqouynd absorption lowering noise.
The case of transmission of damping noise reduction of the present utility model, is applicable to, on various vehicular transmissions, further be applied on various automobiles.
Accompanying drawing explanation
Below in conjunction with drawings and the specific embodiments, the utility model is done further to describe in detail.
Fig. 1 is the utility model embodiment 1 cross-sectional configuration schematic diagram;
Fig. 2 is the structural representation of the microperforated panel in embodiment 1.
In figure: 1, resonance acoustic board; 11, groove; 2, microperforated panel assembly; 3, metal cover board; 31, hollow spheres.
Embodiment
embodiment 1
A case of transmission for damping noise reduction, structure as shown in Figure 1, resonance acoustic board 1, microperforated panel assembly 2 and metal cover board 3 that comprising joins from the inside to the outside successively connects firmly.
The bottom of resonance acoustic board 1 is provided with along its expansion direction the groove 11 upwards caving in multiple bottom surfaces by resonance acoustic board 1 that are spacedly distributed, and the cavity of groove 11 is 360 ° of rotating structures of the shape of symbol Ω.When groove 11 can make sonic transmissions through its wall, produce friction, and then make sound energy loss, noise decrease.
Microperforated panel assembly 2 is made up of multiple microperforated panels, and the cavity surrounding between multiple microperforated panels is sound absorption cavity.The outer surface of microperforated panel assembly 2 is fixed on the bottom surface of metal cover board 3, and spaced apart along the expansion direction of metal cover board 3; Internal surface is fixed on the end face of resonance acoustic board 1, and spaced apart along the expansion direction of resonance acoustic board 1.The top of microperforated panel is wedgelike structure, and as shown in Figure 2, the acoustic impedance of the microperforated panel of wedgelike is large, and sound wave, in narrow space internal vibration friction, can be converted into heat energy loss by acoustic energy and fall.
Aluminum metal cover board 3 inner hollow, are equipped with multiple aluminum hollow spheress 31 that are mutually adjacent to.Hollow spheres 31 intensity are high and have a function of sound absorption.
In the present embodiment, metal cover board 3 and hollow spheres 31 also can adopt other metallic material to make.
The principle of the present embodiment noise-and-vibration-reduction is as follows:
When outwards transmitting, first passes through the noise of case of transmission inside resonance acoustic board 1, when sound wave process groove 11, change with air breathing, meeting generation of vibration friction on groove 11 walls, due to the effect of the viscous damping of resonance acoustic board 1 own and friction heat conduction, can make sound energy loss, noise decrease.Sound wave is passed to sound absorption cavity subsequently, and during through microperforated panel, because the acoustic impedance of microperforated panel is large, sound wave, in narrow space internal vibration friction, can be converted into heat energy loss by acoustic energy and fall.Finally enter into the sound wave in metal cover board 3, it is very weak that acoustic energy has become, sound wave is penetrated into hollow spheres 31, in small space inner accumulated, due to the each proton vibration velocity difference in sound, exist velocity gradient, between adjacent particle, can produce interactional viscous force or internal friction, particle movement is played to inhibition, fall thereby make acoustic energy constantly be converted into heat energy dissipation.
embodiment 2
A kind of vehicular transmission, this vehicular transmission difference with the prior art is only: the case of transmission of the damping noise reduction that it provides with embodiment 1.
The structure of this vehicular transmission other parts, same as the prior art.
embodiment 3
A kind of automobile, with gear, this automobile difference with the prior art is only: the vehicular transmission that its gear provides for embodiment 2.
The structure of this automobile other parts, same as the prior art.
Claims (6)
1. a case of transmission for damping noise reduction,
it is characterized in that:it comprises the resonance acoustic board (1), microperforated panel assembly (2) and the metal cover board (3) that join successively from the inside to the outside, and wherein microperforated panel (2) assembly is made up of the multiple microperforated panels that mutually superpose;
The bottom surface of described resonance acoustic board (1) is provided with multiple grooves (11);
Described metal cover board (3) inner hollow, is equipped with multiple hollow spheress that are mutually adjacent to (31);
Two table bottom surfaces of described microperforated panel assembly (2) are separately fixed on the bottom surface of metal cover board (3), on the end face of resonance acoustic board (1).
2. the case of transmission of damping noise reduction according to claim 1,
it is characterized in that:groove (11) is along the setting of being separated by of the expansion direction of resonance acoustic board (1), and the vertical cross-section of groove (11) is symbol Ω shape.
3. the case of transmission of damping noise reduction according to claim 1,
it is characterized in that:the top of described microperforated panel is wedgelike structure.
4. the case of transmission of damping noise reduction according to claim 1,
it is characterized in that:described metal cover board (3), hollow spheres (31) are aluminium matter structure.
5. a vehicular transmission,
it is characterized in that:it is with the case of transmission of the damping noise reduction described in any one in claim 1-4.
6. an automobile, comprises gear,
it is characterized in that:described gear is vehicular transmission claimed in claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671049.0U CN203670709U (en) | 2013-10-29 | 2013-10-29 | Transmission housing with vibration and noise reduction function, corresponding automotive transmission and corresponding automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671049.0U CN203670709U (en) | 2013-10-29 | 2013-10-29 | Transmission housing with vibration and noise reduction function, corresponding automotive transmission and corresponding automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670709U true CN203670709U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320671049.0U Expired - Fee Related CN203670709U (en) | 2013-10-29 | 2013-10-29 | Transmission housing with vibration and noise reduction function, corresponding automotive transmission and corresponding automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670709U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090193A (en) * | 2016-08-25 | 2016-11-09 | 辽宁科技学院 | A kind of for gearbox gear engagement denoising device |
-
2013
- 2013-10-29 CN CN201320671049.0U patent/CN203670709U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090193A (en) * | 2016-08-25 | 2016-11-09 | 辽宁科技学院 | A kind of for gearbox gear engagement denoising device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20211029 |