CN213973468U - Dynamic vibration absorption device and automobile - Google Patents
Dynamic vibration absorption device and automobile Download PDFInfo
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- CN213973468U CN213973468U CN202022175748.9U CN202022175748U CN213973468U CN 213973468 U CN213973468 U CN 213973468U CN 202022175748 U CN202022175748 U CN 202022175748U CN 213973468 U CN213973468 U CN 213973468U
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- dynamic vibration
- half shaft
- vibration absorbing
- absorbing apparatus
- dynamic
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Abstract
本实用新型提供一种动力吸振装置及汽车，该动力吸振装置套设于两个球笼之间的左驱动半轴上，动力吸振装置呈环形筒状，动力吸振装置包括设于两端部的嵌合部和设于嵌合部之间的吸收部，吸收部的内径与左驱动半轴的轴径一致，吸收部内设有筒型配重块，嵌合部的内壁与左驱动半轴过盈配合。本实用新型提供的动力吸振装置，套设在左驱动半轴的中部并通过配重块调节弱化了左驱动半轴的共振幅度频率，降低了左驱动半轴的共振噪声。
The utility model provides a dynamic vibration absorbing device and an automobile. The dynamic vibration absorbing device is sleeved on a left drive half shaft between two ball cages. The dynamic vibration absorbing device is in the shape of an annular cylinder. The fitting part and the absorbing part arranged between the fitting parts, the inner diameter of the absorbing part is the same as the shaft diameter of the left drive half shaft, the absorbing part is provided with a cylindrical counterweight, and the inner wall of the fitting part is connected to the left drive half shaft. interference fit. The dynamic vibration absorbing device provided by the utility model is sleeved in the middle of the left driving half shaft, and the resonance amplitude frequency of the left driving half shaft is weakened and the resonance noise of the left driving half shaft is reduced by adjusting the counterweight block.
Description
Technical Field
The utility model relates to an auto-parts field, in particular to dynamic vibration absorbing device and car.
Background
During driving, the automobile is subjected to noise interference caused by a plurality of factors, such as engine noise, wind resistance noise, tire noise, chassis noise, resonance noise and the like.
The noise of the engine, the wind resistance noise and the tire noise can be correspondingly improved by arranging a sound insulation material or optimizing a noise source, the main occurrence reason of the chassis noise is that part of rubber sleeves and wearing parts are aged, and the specific improvement mode is that the wearing parts are replaced in time to eliminate the noise.
However, due to the limitation of the connection relationship between the transmission case and the chassis of the automobile, the transmission of the resonance noise transmitted by the left driving half shaft arranged at the front wheel of the chassis is obvious, and the resonance noise transmitted by the left driving half shaft during the running of the automobile is difficult to eliminate.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device is inhaled to power optimizes the resonance problem of left drive semi-axis, has reduced the noise figure of left drive semi-axis.
The utility model provides a device is inhaled to power, the cover is located on the left drive semi-axis between two ball cages, a serial communication port, the device is inhaled to power is the annular tube-shape, the device is inhaled to power is including the gomphosis portion of locating both ends and locating absorption portion between the gomphosis portion, the internal diameter of absorption portion is greater than the diameter of axle of drive semi-axis, just be equipped with the balancing weight in the absorption portion, the inner wall of gomphosis portion with left drive semi-axis interference fit.
The utility model provides a device is inhaled to power, the cover is established on the left drive semi-axis between two ball cages, this device journey tube-shape is inhaled to power, the gomphosis portion and the left drive semi-axis interference fit of both sides, establish the configuration ring in the absorption portion at middle part, make when the resonance condition takes place for the left drive semi-axis, the device is inhaled to power that the accessible set up makes its resonant frequency and resonance amplitude obtain adjusting, the noise of its resonance amplitude and production has been weakened, and then make the noise figure through the transmission of left drive semi-axis improve.
Furthermore, the outer wall of the embedding part is provided with an annular sinking groove, and a fixing part is arranged in the sinking groove.
Further, the fixing piece is a clamping piece or a binding belt.
Further, the inner diameter section of the absorption part is 25-35 mm.
Further, the balancing weight is integrally embedded in the absorption part.
Furthermore, the surface of the balancing weight is in a sawtooth shape.
Further, the inner side surface of the fitting portion is a rough surface.
The utility model also provides a car, the left drive semi-axis of this car is through assembling foretell dynamic vibration absorber to reach the effect of optimizing car NVH coefficient.
Drawings
Fig. 1 is a schematic structural view of a dynamic vibration absorber according to a first embodiment of the present invention;
fig. 2 is a schematic side view of the dynamic vibration absorbing apparatus of fig. 1;
fig. 3 is a schematic cross-sectional view of the vibration absorbing device of fig. 2;
fig. 4 is a schematic view of an upper assembly structure of the dynamic vibration absorber and the left driving axle shaft according to the first embodiment of the present invention;
fig. 5 is a schematic sectional view of a dynamic vibration absorber according to a second embodiment of the present invention.
Description of the main elements
| Dynamic vibration absorber | 10、10a | Fitting |
11 | |
| Sink |
111 | |
12 | |
| |
121、 | Ball cage | 20 | |
| Left driving |
21 |
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 4, in order to provide the dynamic vibration absorber 10 according to an embodiment of the present invention, the dynamic vibration absorber 10 is sleeved on a left driving axle shaft 21 between two ball cages 20.
Specifically, the dynamic vibration absorbing apparatus 10 is an annular cylindrical structure, a through hole is formed inside the dynamic vibration absorbing apparatus 10 for being fitted over the left drive axle shaft 21, and preferably, the dynamic vibration absorbing apparatus 10 is provided at a middle position of the left drive axle shaft 21. The dynamic vibration absorber 10 includes the tabling part 11 that locates at both ends and locates the absorption portion 12 between tabling parts 11, the internal diameter of the absorption portion 12 is greater than the shaft diameter of the drive half axle, and there is a counterweight 121 in the absorption portion 12, the inner wall of the tabling part 11 and left drive half axle 21 interference fit.
The dynamic vibration absorbing device 10 provided by the utility model is in interference fit with the left driving half shaft 21 through the embedded parts 11 arranged at the two end parts of the dynamic vibration absorbing device 10, and is specifically assembled in the middle part of the left driving half shaft 21, so that the dynamic vibration absorbing device 10 is effectively and fixedly sleeved on the left driving half shaft 21; the overall mass of the dynamic-vibration absorbing apparatus 10 is increased by the weight block disposed in the absorbing portion 12, so that when the dynamic-vibration absorbing apparatus 10 resonates with the left drive axle shaft 21, the ratio of gravity in the center position of the left drive axle shaft 21 is changed, the frequency of the resonance amplitude thereof is adjusted, and the resonance amplitude thereof and the generated noise are weakened. Thus, the noise generated by the resonance of the left driving half shaft 21 is improved, and the resonance noise of the left driving half shaft 21 is optimized.
It can be understood that, in order to further enhance the fixing effect of the fitting part 11 and the left driving axle shaft, an annular sunken groove 111 is formed in the outer wall of the fitting part 11, and a fixing member is arranged in the sunken groove 111 to fasten the sunken groove.
Further, the fixing member 111 is a band member or a band, and the band member or the band is disposed at the position of the sinking groove 111 to fasten the outer surfaces of both sides of the dynamic-vibration absorbing apparatus 10.
By way of example and not limitation, in the first embodiment of the present invention, the inner diameter interval of the absorption portion 12 is 28mm to match the shaft diameter size of the left driving half shaft 21 of the general conventional specification, so that the inner diameter of the absorption portion 12 is consistent with the shaft diameter of the left driving half shaft, it can be understood that in other embodiments of the present invention, the inner diameter interval range of the absorption portion 12 is any value in the range of 25-35mm to match the left driving half shaft of different size specifications on the market at present.
In the first embodiment of the present invention, the weight member 121 is integrally embedded in the absorption portion 12, so that the weight member 121 and the absorption portion 12 are more tightly fixed.
The utility model discloses in the first embodiment, the medial surface of gomphosis portion 11 is through the processing of polishing for the medial surface of gomphosis portion 11 is the rough surface, and further the contact friction who has strengthened with left drive semi-axis 21 has avoided power to inhale the problem that the device 10 cover was slided about left drive semi-axis 21 produced.
Please refer to fig. 5, for the dynamic vibration absorber 10a according to the second embodiment of the present invention, the structural features thereof are basically the same as the dynamic vibration absorber 10 according to the first embodiment, and the difference lies in that the weight block 121a is provided with a serrated surface on the surface, specifically, in the second embodiment of the present invention, the serrated surface is disposed on the two side edges of the weight block 121a to increase the positioning effect of the weight block 121a and the absorption portion 12, thereby optimizing the stability of the dynamic vibration absorber 10a in the process of resonating with the left driving half shaft 21.
It can be understood that in other embodiments of the present invention, the surface of the weight block 121a can also be processed to be a frosted surface, other increases of the concave-convex structure and the shape of the contact area of the absorption portion 12, so as to achieve the same purpose of improving the stability of the weight block 121a in the resonance process.
The utility model provides a device 10 is inhaled to power, through setting up annular tubular structure cover establish on left drive semi-axis, set up balancing weight 12 and adjust the range frequency of weakening left drive semi-axis 21 resonance for the resonance noise of left drive semi-axis 21 obtains restraining the weakening, has reduced the resonance noise of the car in-process of traveling.
The utility model also provides a car, this car have reduced the noise interference of car driving in-process through assembling foretell dynamic vibration absorber 10 on left drive semi-axis 21, have promoted the impression of traveling and have experienced with the driving.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. A dynamic vibration absorber is sleeved on a left driving half shaft between two ball cages and is characterized in that the dynamic vibration absorber is in an annular tube shape and comprises embedded parts arranged at two end parts and an absorption part arranged between the embedded parts, the inner diameter of the absorption part is consistent with the shaft diameter of the left driving half shaft, a tube-shaped balancing weight is arranged in the absorption part, and the inner wall of the embedded part is in interference fit with the left driving half shaft.
2. The dynamic vibration absorbing apparatus of claim 1, wherein the outer wall of said fitting portion is provided with an annular sinking groove, and a fixing member is provided in said sinking groove.
3. The dynamic vibration absorbing apparatus of claim 2, wherein said fixing member is a clip member or a ribbon.
4. The dynamic vibration absorbing apparatus of claim 1, wherein the inner diameter of said absorbing portion ranges from 25 to 35 mm.
5. The dynamic-vibration absorbing apparatus of claim 1, wherein said weight block is integrally embedded in said absorbing portion.
6. The dynamic-vibration absorbing apparatus of claim 1, wherein the surface of said weight is serrated.
7. The dynamic vibration absorbing apparatus of claim 1, wherein the inner side surface of the fitting portion is a rough surface.
8. A motor vehicle, characterized in that the left drive half shaft of the motor vehicle is provided with a dynamic vibration absorbing apparatus as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022175748.9U CN213973468U (en) | 2020-09-28 | 2020-09-28 | Dynamic vibration absorption device and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022175748.9U CN213973468U (en) | 2020-09-28 | 2020-09-28 | Dynamic vibration absorption device and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213973468U true CN213973468U (en) | 2021-08-17 |
Family
ID=77255115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022175748.9U Active CN213973468U (en) | 2020-09-28 | 2020-09-28 | Dynamic vibration absorption device and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213973468U (en) |
-
2020
- 2020-09-28 CN CN202022175748.9U patent/CN213973468U/en active Active
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