CN217683049U - Frequency-adaptive dynamic vibration absorber - Google Patents
Frequency-adaptive dynamic vibration absorber Download PDFInfo
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- CN217683049U CN217683049U CN202221072964.3U CN202221072964U CN217683049U CN 217683049 U CN217683049 U CN 217683049U CN 202221072964 U CN202221072964 U CN 202221072964U CN 217683049 U CN217683049 U CN 217683049U
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Abstract
The utility model discloses a frequency adaptation dynamic vibration absorber relates to the automobile parts field, including rubber housing, the vulcanization shaping has the metal ring in the rubber housing, is provided with variable mass structure on rubber housing, through adjusting variable mass structure's quality is realized rightly the adjustment of dynamic vibration absorber frequency. The utility model has the advantages that: the mass of the dynamic vibration absorber is adjusted by adding the mass block, so that the frequency can be adjusted to meet the requirements of the whole vehicle, and the optimal vibration and noise reduction effect is achieved; different vehicle types often need to be matched with the dynamic vibration absorbers with different structures, so that the specifications of the dynamic vibration absorbers are various, and the production and use costs are high; the mass production dynamic vibration absorbers have the inherent frequency which is often discrete, and a part of the dynamic vibration absorbers can not achieve the damping effect, so the utility model can solve the problem; the shaft type driving shaft can be applied to other shaft type products except for constant speed driving shafts.
Description
Technical Field
The utility model relates to an automobile parts's field, concretely relates to frequency adaptation dynamic vibration absorber.
Background
Constant velocity drive shafts are key components of automotive transmission systems and are responsible for the transfer of vehicle power from the transmission to the wheel ends. Due to the excitation of the engine or the motor, the constant-speed driving shaft can generate vibration noise under specific working conditions, and driving and riding comfort are affected. The vibration noise problem can be solved/improved by adding a dynamic vibration absorber on the constant-speed driving shaft.
As shown in fig. 1 and 2, in the prior art, a dynamic vibration absorber (1 ') is fixed to a shaft of a constant velocity drive shaft (3 ') by a yoke (2 '). As shown in fig. 2, the conventional dynamic vibration absorber is composed of a metal ring (4 ') and a rubber portion (5'), and is a solid structure in which metal and rubber are vulcanized together. However, once this structure is produced, its natural frequency cannot be changed. The best damping effect cannot be achieved or no damping effect is achieved with slight deviation in design and production. Different motorcycle types often need to match the dynamic vibration absorber of different structures, lead to the dynamic vibration absorber specification to be various, and production and use cost are high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide a frequency adaptation dynamic vibration absorber, the accessible adjusting mass piece changes natural frequency, makes dynamic vibration absorber and whole car performance match, reaches best damping performance to improve or eliminate the vibration noise problem.
The purpose of the utility model is accomplished through following technical scheme: the frequency-adaptive dynamic vibration absorber comprises a rubber shell, wherein two ends of the rubber shell are communicated and sleeved on a constant-speed driving shaft, a metal ring is formed in the rubber shell in a vulcanization mode, a variable-mass structure is arranged on the rubber shell, and the frequency of the dynamic vibration absorber is adjusted by adjusting the mass of the variable-mass structure.
As a further technical scheme, the variable mass structure comprises mass blocks, locking bolts and locking nuts, wherein at least one mass block is arranged on one side end face of the rubber shell, the locking bolts are uniformly distributed on the other side end face of the rubber shell, and the locking bolts sequentially penetrate through the rubber shell and the mass blocks and are fixedly locked by the locking nuts.
As a further technical scheme, the variable mass structure comprises mass blocks, at least one mass block is arranged on the periphery of the metal ring, and a plurality of window holes are uniformly formed in the outer wall of the rubber shell along the circumferential direction, so that the surface of the mass block is exposed from the window holes.
As a further technical scheme, the variable mass structure comprises mass blocks, annular grooves are formed in the outer wall of the rubber shell along the circumferential direction, the metal ring is exposed out of the annular grooves, and at least one mass block is arranged in the annular grooves in the periphery of the metal ring.
As a further technical scheme, one side of the metal ring is exposed out of the annular groove.
As a further technical scheme, the variable mass structure comprises mass blocks, a plurality of arc-shaped grooves are uniformly formed in the outer wall of the rubber shell along the axial direction, the metal ring is exposed out of each arc-shaped groove, and one mass block is arranged in each arc-shaped groove along the circumferential direction of the metal ring.
According to a further technical scheme, the variable mass structure comprises mass blocks, a plurality of grooves are uniformly formed in the end face of one side of the rubber shell along the circumferential direction, one mass block is correspondingly installed in each groove, and the mass blocks are in contact fit with the metal rings.
As a further technical scheme, the mass block is of an annular structure or a plurality of arc structures uniformly distributed along the circumference.
As a further technical solution, the mass is fixed to the metal ring by bonding, riveting or welding.
The beneficial effects of the utility model are that:
1. the mass block is added to realize the mass adjustment of the dynamic vibration absorber, so that the frequency adjustment is realized, the dynamic vibration absorber is adaptive to the requirement of the whole vehicle, and the optimal vibration and noise reduction effect is achieved;
2. different vehicle types often need to be matched with the dynamic vibration absorbers with different structures, so that the specifications of the dynamic vibration absorbers are various, and the production and use costs are high;
3. the mass production dynamic vibration absorbers have the inherent frequency which is often discrete, and a part of the dynamic vibration absorbers can not achieve the damping effect, so the utility model can solve the problem;
4. can be applied to other shaft products except for the constant-speed driving shaft.
Drawings
Fig. 1 is a schematic view showing a structure of a prior art dynamic vibration absorber assembled with a constant velocity drive shaft.
Fig. 2 is a partially enlarged schematic view of a region a in fig. 1.
Fig. 3 is a schematic perspective view of embodiment 1 of the present invention.
Fig. 4 is a front view of the structure of embodiment 1 of the present invention.
Fig. 5 is a sectional view B-B of fig. 4.
Fig. 6 is a schematic perspective view of embodiment 2 of the present invention.
Fig. 7 is a front view of the structure of embodiment 2 of the present invention.
Fig. 8 is a cross-sectional view C-C of fig. 7.
Fig. 9 is a schematic perspective view of embodiment 3 of the present invention.
Fig. 10 is a front view of the structure of embodiment 3 of the present invention.
Fig. 11 is a cross-sectional view taken along line D-D of fig. 10.
Fig. 12 is a schematic perspective view of embodiment 4 of the present invention.
Fig. 13 is a front view of the structure of embodiment 4 of the present invention.
Fig. 14 is a cross-sectional view E-E of fig. 13.
Fig. 15 is a schematic perspective view of embodiment 5 of the present invention.
Fig. 16 is a schematic top view of embodiment 5 of the present invention.
Fig. 17 is a sectional view F-F of fig. 16.
Fig. 18 is a front view of the structure of embodiment 5 of the present invention.
Fig. 19 is a sectional view taken along line G-G of fig. 18.
Fig. 20 is a schematic perspective view of embodiment 6 of the present invention.
Fig. 21 is a front view of the structure of embodiment 6 of the present invention.
Fig. 22 is a sectional view taken along line H-H of fig. 21.
Description of reference numerals: the dynamic vibration absorber comprises a dynamic vibration absorber 1', a clamping hoop 2', a constant-speed driving shaft 3', a metal ring 4' and a rubber part 5';
the mass block comprises a rubber shell 1, a metal ring 2, a mass block 3, a locking bolt 4, a locking nut 5, a window hole 6, an annular groove 7, an arc-shaped groove 8 and a groove 9.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
example 1: as shown in fig. 3 to 5, a frequency adaptive dynamic vibration absorber includes a rubber housing 1, two ends of the rubber housing 1 are penetrated for being sleeved on a constant speed driving shaft, a metal ring 2 is formed in the rubber housing 1 by vulcanization, a variable mass structure is arranged on the rubber housing 1, the variable mass structure includes a mass block 3, locking bolts 4 and locking nuts 5, at least one mass block 3 (in this embodiment, an annular mass block 3, or a plurality of arc-shaped mass blocks 3 uniformly distributed along the circumference) is arranged on one side end face of the rubber housing 1, a plurality of locking bolts 4 (as shown in fig. 3, four in this embodiment, or other numbers corresponding to the number of the arc-shaped mass blocks 3) are uniformly distributed on the other side end face of the rubber housing 1, and the locking bolts 4 sequentially penetrate through the rubber housing 1 and the mass blocks 3 and are fixedly locked by the locking nuts 5.
The frequency of the dynamic vibration absorber is determined by mass and rigidity, and the formula is as follows:
wherein f is frequency; k is stiffness; m is mass.
It follows that the natural frequency of the dynamic vibration absorber can be varied by adjusting the mass. In this embodiment, since the mass block 3 is detachably connected to the rubber housing 1, the frequency of the dynamic vibration absorber can be changed by adjusting the mass of the mass block 3. The mass block 3 can achieve the purpose of changing the mass by adjusting the number, the thickness and the shape. The design is carried out according to the actual installation requirements.
Example 2: as shown in fig. 6 to 8, the variable mass structure is different from embodiment 1 in that the variable mass structure includes mass blocks 3, at least one mass block 3 (in this embodiment, an annular mass block 3, or a plurality of arc-shaped mass blocks 3 uniformly distributed along the circumference) is disposed at the periphery of the metal ring 2, a plurality of window holes 6 are uniformly opened on the outer wall of the rubber housing 1 along the circumferential direction, and when the mass block 3 is a plurality of arc-shaped mass blocks 3 uniformly distributed along the circumference, the positions of the window holes 6 correspond to the positions of each arc-shaped mass block 3, so that the surface of the mass block 3 is exposed from the window holes 6. Preferably, the window holes 6 may be distributed at a middle position of the outer wall of the rubber housing 1, or may be distributed at an end face of the outer wall of the rubber housing 1.
Preferably, the mass 3 can be fixed to the eyelet 2 by gluing or riveting or welding.
Example 3: as shown in fig. 9 to 11, the difference from embodiment 1 is that the variable mass structure includes a mass block 3, and an annular groove 7 is formed in an outer wall of the rubber housing 1 along a circumferential direction, so that a middle portion of the metal ring 2 is exposed from the annular groove 7. At least one mass block 3 (in this embodiment, four arc-shaped mass blocks 3 uniformly distributed along the circumference, or one annular mass block 3) is arranged in an annular groove 7 on the periphery of the metal ring 2.
Preferably, the mass 3 can be fixed to the eyelet 2 by gluing or riveting or welding.
Example 4: as shown in fig. 12 to 14, the difference from embodiment 3 is that, referring to fig. 12, the rubber housing 1 is retained on the left side of the mass block 3, and the right side of the mass block 3 is entirely the annular groove 7, so that the right side of the metal ring 2 is exposed from the annular groove 7.
Example 5: as shown in fig. 15 to 19, the variable mass structure is different from embodiment 1 in that the variable mass structure includes a mass block 3, a plurality of arc-shaped grooves 8 (four in this embodiment or other numbers as shown in fig. 16) are uniformly formed in an outer wall of the rubber housing 1 along an axial direction, the metal ring 2 is exposed from each arc-shaped groove 8, and one mass block 3 is correspondingly disposed in each arc-shaped groove 8 along a circumferential direction of the metal ring 2. The mass 3 can preferably be fixed to the eyelet 2 by means of gluing or riveting or welding.
Example 6: as shown in fig. 20 to 22, the variable mass structure is different from embodiment 1 in that the variable mass structure includes a mass block 3, a plurality of grooves 9 (four in this embodiment or other numbers as shown in fig. 20) are uniformly formed in a circumferential direction on an end surface of one side of the rubber housing 1, one mass block 3 is correspondingly installed in each groove 9, and the mass block 3 is in contact fit with the metal ring 2. Preferably, the mass 3 can be fixed to the eyelet 2 by gluing or riveting or welding.
The utility model provides a dynamic vibration absorber's metal ring 2 is incompletely covered by rubber housing 1, and 2 partial surfaces of metal ring expose outside, consequently in the use, can increase quality piece 3 according to actual demand on metal ring 2, reaches the purpose that changes the quality through quantity, thickness, the shape of adjusting quality piece 3. The number of the mass blocks 3 can be 1, or can be symmetrical 2 or more, and can be increased according to the actual frequency requirement. The aim that one dynamic vibration absorber can meet different vehicle requirements is fulfilled.
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (9)
1. A frequency-adaptive dynamic vibration absorber is characterized in that: the dynamic vibration absorber comprises a rubber shell (1), wherein two ends of the rubber shell (1) are communicated and are used for being sleeved on a constant-speed driving shaft, a metal ring (2) is formed in the rubber shell (1) in a vulcanization mode, a variable-mass structure is arranged on the rubber shell (1), and the frequency of the dynamic vibration absorber is adjusted by adjusting the mass of the variable-mass structure.
2. The frequency-adaptive dynamic vibration absorber according to claim 1, wherein: the variable mass structure comprises mass blocks (3), locking bolts (4) and locking nuts (5), wherein at least one mass block (3) is arranged on one side end face of the rubber shell (1), the locking bolts (4) are uniformly distributed on the other side end face of the rubber shell (1), and the locking bolts (4) sequentially penetrate through the rubber shell (1) and the mass blocks (3) and are fixedly locked by the locking nuts (5).
3. The frequency-adaptive dynamic vibration absorber according to claim 1, wherein: the variable mass structure comprises mass blocks (3), at least one mass block (3) is arranged on the periphery of the metal ring (2), and a plurality of window holes (6) are uniformly formed in the outer wall of the rubber shell (1) along the circumferential direction, so that the surface of the mass block (3) is exposed out of the window holes (6).
4. The frequency-adaptive dynamic vibration absorber according to claim 1, wherein: the variable mass structure comprises mass blocks (3), an annular groove (7) is formed in the outer wall of the rubber shell (1) along the circumferential direction, the metal ring (2) is exposed out of the annular groove (7), and at least one mass block (3) is arranged in the annular groove (7) in the periphery of the metal ring (2).
5. The frequency-adaptive dynamic vibration absorber according to claim 4, wherein: one side of the metal ring (2) is exposed out of the annular groove (7).
6. The frequency-adaptive dynamic vibration absorber according to claim 1, wherein: the variable mass structure comprises mass blocks (3), a plurality of arc-shaped grooves (8) are uniformly formed in the outer wall of the rubber shell (1) along the axial direction, the metal rings (2) are exposed out of each arc-shaped groove (8), and one mass block (3) is arranged in each arc-shaped groove (8) along the circumferential direction of the metal ring (2).
7. The frequency-adaptive dynamic vibration absorber according to claim 1, wherein: the variable mass structure comprises mass blocks (3), a plurality of grooves (9) are uniformly formed in the end face of one side of the rubber shell (1) along the circumferential direction, one mass block (3) is correspondingly installed in each groove (9), and the mass blocks (3) are in contact fit with the metal rings (2).
8. The frequency-adaptive dynamic vibration absorber according to any one of claims 2 to 3, wherein: the mass block (3) is of an annular structure or a plurality of arc structures uniformly distributed along the circumference.
9. The frequency-adaptive dynamic vibration absorber according to any one of claims 6 to 7, wherein: the mass block (3) is fixed on the metal ring (2) through bonding, riveting or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221072964.3U CN217683049U (en) | 2022-05-05 | 2022-05-05 | Frequency-adaptive dynamic vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221072964.3U CN217683049U (en) | 2022-05-05 | 2022-05-05 | Frequency-adaptive dynamic vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217683049U true CN217683049U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221072964.3U Active CN217683049U (en) | 2022-05-05 | 2022-05-05 | Frequency-adaptive dynamic vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217683049U (en) |
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2022
- 2022-05-05 CN CN202221072964.3U patent/CN217683049U/en active Active
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Address after: 311215 Wanxiang Road, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Wanxiang Qianchao Co.,Ltd. Patentee after: WANXIANG GROUP Co.,Ltd. Address before: No.1 Wanxiang Road, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: WANXIANG QIANCHAO Co.,Ltd. Patentee before: WANXIANG GROUP Co.,Ltd. |