CN210318326U - Differential damping device, differential assembly and automobile - Google Patents
Differential damping device, differential assembly and automobile Download PDFInfo
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- CN210318326U CN210318326U CN201921060888.2U CN201921060888U CN210318326U CN 210318326 U CN210318326 U CN 210318326U CN 201921060888 U CN201921060888 U CN 201921060888U CN 210318326 U CN210318326 U CN 210318326U
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Abstract
The utility model discloses a differential mechanism vibration damper, differential mechanism assembly and car, differential mechanism vibration damper includes: the mass block is internally provided with an installation channel which is penetrated through along the length direction, and the inner wall of the installation channel is provided with at least one liquid drainage guide groove; the elastic body comprises a substrate and a supporting block connected to the substrate, and the substrate is connected in the mounting channel and is arranged opposite to the liquid drainage guide groove; the supporting block penetrates through the mounting channel and extends to the outer side of the mass block, a fixing piece is arranged in the supporting block, and the fixing piece is used for being connected with a differential mechanism. The utility model provides a differential mechanism vibration damper, differential mechanism assembly and car provides the friction damping effect, for differential mechanism provides the damping effect, and noise reduction has better corrosion resistance, improves and drives the travelling comfort.
Description
Technical Field
The utility model relates to an automobile power system accessory, more specifically relates to a differential mechanism vibration damper, differential mechanism assembly and car.
Background
Typically, under excitation of an automotive powertrain, the first order bending mode of the differential may be excited to cause resonance. At this time, the frequency of the external excitation coincides with the first-order natural frequency of the differential itself, causing vibration in the middle of the differential, and further possibly generating a booming sound.
After the vibration damper (such as mass block) is applied to the differential, the vibration generated by the differential in the driving or stopping process can be absorbed, the sound of booming is avoided, and the driving comfort is improved. In the prior art, in order to enable the mass block and the device to be damped to move relatively, a certain gap needs to be reserved between the mass block and the supporting block. The existence of the gap may cause entry and accumulation of corrosive liquid such as rainwater, etc., causing corrosion of the gap, and further may cause partial separation of the vehicle-making rubber from the substrate, resulting in a reduction in damping effect.
Therefore, a differential vibration damping device, a differential assembly and an automobile are needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a differential mechanism vibration damper, differential mechanism assembly and car provides the friction damping effect, for differential mechanism provides the damping effect, reduces the noise, has better corrosion resistance, improves and drives the travelling comfort.
Based on above-mentioned purpose the utility model provides a differential mechanism vibration damper, include:
the mass block is internally provided with an installation channel which is penetrated through along the length direction, and the inner wall of the installation channel is provided with at least one liquid drainage guide groove;
the elastic body comprises a substrate and a supporting block connected to the substrate, and the substrate is connected in the mounting channel and is arranged opposite to the liquid drainage guide groove; the supporting block penetrates through the mounting channel and extends to the outer side of the mass block, a fixing piece is arranged in the supporting block, and the fixing piece is used for being connected with a differential mechanism.
Preferably, a plurality of the liquid drainage guide grooves are arranged on the inner wall of the mounting channel, and are distributed at intervals along the circumferential direction of the mounting channel.
Preferably, the plurality of liquid discharge guide grooves are equally spaced along a circumferential direction of the mounting passage.
Preferably, the mounting channel comprises a first channel and a second channel which are communicated in sequence, the aperture of the first channel is larger than that of the second channel, each liquid drainage guide groove extends along the first channel, the substrate is in interference fit with the first channel, and the supporting block is in interference fit with the second channel.
Preferably, a threaded hole penetrating along the length direction is formed in the support block, the fixing piece is a fixing bolt connected in the threaded hole, and the fixing bolt is in threaded connection with the differential.
Preferably, the outer surface of the supporting block is covered with a first rubber layer, and the supporting block is connected with the substrate through the first rubber layer.
Preferably, an accommodating cavity is formed in the substrate, a second rubber layer covers the cavity wall of the accommodating cavity, and the support block is at least partially inserted into the accommodating cavity and is connected with the second rubber layer through the first rubber layer in a vulcanization mode.
In addition, preferably, the substrate is made of stainless steel material.
The utility model also provides a differential mechanism assembly, include: the differential mechanism vibration damping device comprises a mass block and an elastic body, wherein a mounting channel which is through along the length direction is arranged in the mass block, and at least one liquid drainage guide groove is arranged on the inner wall of the mounting channel; the elastic body comprises a substrate and a supporting block connected to the substrate, and the substrate is connected in the mounting channel and is arranged opposite to the liquid drainage guide groove; the supporting block penetrates through the mounting channel and extends to the outer side of the mass block, a fixing piece is arranged in the supporting block, and the fixing piece is used for being connected with the differential mechanism.
The utility model also provides an automobile, the automobile includes like foretell differential mechanism vibration damper.
From the foregoing, the utility model provides a differential damping device, differential assembly and car compares with prior art, has following advantage: the mass block and the elastic body form a vibration damping device, and the vibration damping device is suitable for damping the translational motion of the differential. The mass block has a hysteresis response, the vibration frequency of the vibration damper can be changed by the mass block, the vibration of the differential is eliminated, the elastic body generates a friction damping effect, the resonance amplitude is eliminated, the vibration and noise problems of the vehicle are optimized, the riding comfort is improved, and the stability of the differential is improved. Meanwhile, the liquid drainage guide groove is formed in the inner wall of the mass block, corrosive liquid such as rainwater in the mass block can be drained through the liquid drainage guide groove, the corrosive liquid is prevented from being retained and accumulated in the mass block, gap corrosion is avoided, separation of the elastic body and the mass block is avoided, or the supporting block and the substrate are separated, so that the vibration reduction effect is improved, and the service life is prolonged.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic view of a differential damping device used in an embodiment of the present invention.
FIG. 2 is a side view of the differential damping device shown in FIG. 1.
FIG. 3 is a cross-sectional view of the differential damping device shown in FIG. 1.
FIG. 4 is a schematic view of a mass of the differential damping device shown in FIG. 1.
FIG. 5 is a cross-sectional view of a mass of the differential damping device shown in FIG. 4.
Fig. 6 is a cross-sectional view of an elastic body of the differential damping device shown in fig. 1.
FIG. 7 is a schematic view of a damping assembly including the differential damping device shown in FIG. 1.
Wherein the reference numbers:
100: a differential damping device; 1: a mass block; 101: a liquid drainage guide groove;
2: an elastomer; 21: a substrate; 22: a first rubber layer; 23: a support block;
231: a threaded hole; 200: fixing the bolt; 300: a differential gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings. The terms "inner" and "outer" are used to refer to directions toward and away from, respectively, the geometric center of a particular component.
Fig. 1 is a schematic view of a differential damping device used in an embodiment of the present invention. FIG. 2 is a side view of the differential damping device shown in FIG. 1. FIG. 3 is a cross-sectional view of the differential damping device shown in FIG. 1. FIG. 4 is a schematic view of a mass of the differential damping device shown in FIG. 1. FIG. 5 is a cross-sectional view of a mass of the differential damping device shown in FIG. 4. Fig. 6 is a cross-sectional view of an elastic body of the differential damping device shown in fig. 1. As shown in fig. 1 to 6, the differential damping device 100 includes: a mass 1 and an elastic body 2.
An installation channel which is through along the length direction is arranged in the mass block 1, and at least one liquid drainage guide groove 101 is arranged on the inner wall of the installation channel;
the elastic body 2 comprises a substrate 21 and a supporting block 23 connected on the substrate 21, wherein the substrate 21 is connected in the mounting channel and is arranged opposite to the liquid drainage guide groove 101; the support block 23 extends through the mounting channel and extends to the outside of the mass block 1, and a fixing member (e.g., a fixing bolt 200) is disposed in the support block 23 and is used for connecting with a differential 300 (shown in fig. 7).
The differential vibration damping device 100 is formed by the mass 1 and the elastic body 2, and the differential vibration damping device 100 can be fixed on the differential 300 to provide vibration damping of translational motion. The elastic body 2 is connected with the mass block 1 into an integral structure through a substrate, 21 a fixing piece is connected on the supporting block 23, the fixing piece extends out of the supporting block 23 and is connected with the differential mechanism 300, and therefore the differential mechanism vibration damping device 100 is connected on the differential mechanism 300. Be provided with flowing back guide slot 101 on the inner wall of quality piece 1, can discharge corrosive liquids such as the inside rainwater of quality piece 1 through flowing back guide slot 101, prevent that corrosive liquids from being detained and piling up inside quality piece 1, avoid causing the interstitial corrosion, avoid elastomer 2 and quality piece 1 separation, or support block 23 and substrate 21 separation to improve the damping effect, increase of service life. When the vehicle body moves, the mass block 1 has a hysteresis response, the mass block 1 can change the vibration frequency of the vibration damper, the vibration of the differential mechanism 300 is eliminated, the elastic body 2 generates a friction damping effect, the resonance amplitude is eliminated, the vibration and noise problems of the vehicle are optimized, the riding comfort is improved, and the stability of the differential mechanism 300 is improved.
In this embodiment, the mass 1 may have various weights, and the vibration frequency of the differential vibration damping device 100 may be changed by changing the weight of the mass 1, and the differential vibration damping device 100 is fixed to the differential 300 to prevent the differential 300 and the components connected thereto from resonating.
Preferably, a plurality of liquid drainage guide grooves 101 are arranged on the inner wall of the mounting channel, and the plurality of liquid drainage guide grooves 101 are distributed at intervals along the circumferential direction of the mounting channel. After the accumulated liquid enters the installation channel through the gap between the elastomer 2 and the mass block 1, the moisture can be rapidly and timely discharged through the liquid discharge guide groove 101. In order to provide sufficient drainage capacity, the number of drainage channels may be set according to the area of the installation channel and the drainage volume of the drainage channel 101.
In the present embodiment, the number of the liquid discharge guide grooves 101 is 12. The position of the liquid discharge guide 101 may be set according to various drainage requirements, for example, a plurality of liquid discharge guides 101 may be uniformly distributed on the inner wall of the installation passage, or a plurality of liquid discharge guides 101 may be arranged on the inner wall of the installation passage at positions where water is liable to accumulate.
Preferably, the plurality of liquid discharge guide grooves 101 are equally spaced along the circumferential direction of the mounting channel. Through the arrangement, the plurality of liquid drainage guide grooves 101 are of a symmetrical structure, and the installation angle and direction do not need to be particularly noticed during installation, so that the assembly difficulty is reduced; moreover, blind areas in the circumferential direction of the installation channel can be avoided, and the accumulated liquid in the installation channel can be discharged quickly.
In this embodiment, 12 liquid discharge guide grooves 101 are uniformly arranged on the mass block 1, the cross section of each liquid discharge guide groove 101 is rectangular, the thickness direction of each liquid discharge guide groove 101 extends along the thickness direction of the mass block 1, and the central angle between adjacent liquid discharge guide grooves 101 is 30 °.
Preferably, the installation channel comprises a first channel and a second channel which are communicated in sequence, the aperture of the first channel is larger than that of the second channel, each liquid drainage guide groove 101 extends along the first channel, the substrate 21 is in interference fit with the first channel, and the support block 23 is in interference fit with the second channel. The first channel is used for connecting the substrate 21 of the elastic body 2, the second channel is used for connecting the supporting block 23 of the elastic body 2, and the aperture of the first channel is larger than that of the second channel, so that accumulated liquid can be discharged from the first channel, and the accumulated liquid is prevented from entering the second channel. The substrate 21 is pressed into the first channel of the mass block 1 in a press-fitting mode, the matching mode is interference fit, the mass block 1 can be effectively fixed, and the risk of separation of the substrate 21 and the mass block 1 is reduced. The supporting block 23 penetrates through the mounting channel and extends to the outer side of the mass block 1, so that the movable range of the mass block 1 is increased, and the damping effect is better.
Preferably, a threaded hole 231 is formed in the support block 23 to penetrate in the longitudinal direction, the fixing member is a fixing bolt 200 connected to the threaded hole 231, and the fixing bolt 200 is screwed to the differential 300. A screw hole 231 for cooperating with the fixing bolt 200 is provided inside the support block 23, the fixing bolt 200 is screwed into the screw hole 231 and extends to the outside of the support block 23, and the support block 23 is fixed to the differential mechanism 300 by the fixing bolt 200.
In the present embodiment, the mass 1 and the elastic body 2 can generate relative movement, and the supporting block 23 is longer than the mass 1 to provide a larger displacement for the mass 1.
Preferably, the outer surface of the support block 23 is covered with a first rubber layer 22, and the support block 23 is connected to the substrate 21 through the first rubber layer 22. The first rubber layer 22 connecting the substrate 21 and the support block 23 is used to absorb the resonance energy of the differential, and the first rubber layer 22 provides the elastic body 2 with the deformation capability, provides the buffering capability, absorbs the energy generated in the vibration, and satisfies the damping effect on the vibration of the differential 300. The first rubber layer 22 and the liquid discharge guide groove 101 together improve the corrosion resistance of the vibration damping device.
In the present embodiment, the first rubber layer 22 is completely coated between the inner surface of the substrate 21 and the outer surface of the support block 23 by vulcanization, the adhesion relationship between the first rubber layer 22 and the inner surface of the substrate 21 and between the first rubber layer 22 and the outer surface of the support block 23 is tight, there is no relative displacement, and the vulcanization thickness of the first rubber layer 22 can be determined according to the size of the differential damping device 100 and the vibration load of the differential 300.
Preferably, a containing cavity is arranged in the substrate 21, a second rubber layer covers the cavity wall of the containing cavity, and the supporting block 23 is at least partially inserted into the containing cavity and is connected with the second rubber layer through the first rubber layer 22 in a vulcanization mode. The first rubber layer 22 and the second rubber layer are respectively arranged outside the supporting block 23 and in the substrate 21, so that the assembly difficulty of the rubber layers can be reduced, and meanwhile, the substrate 21 is connected with the supporting block 23 through vulcanization of the first rubber layer 22 and the second rubber layer to jointly form the integral elastomer 2.
In addition, the substrate 21 is preferably made of a stainless material. The stainless steel material has good corrosion resistance, so that the substrate 21 has good corrosion resistance, and the risk of separation of the substrate 21 from the second or first rubber layer 22 is reduced. Further, a substrate 21 is press-fitted into the first passage inside the proof mass 1, and the substrate 21 is of a stainless steel one-piece structure.
The assembly and use of the differential damping device is described further below.
The substrate 21 of the differential damping device 100 is connected with the supporting block 23 through the first rubber layer 22 and the second rubber layer to jointly form the elastic body 2, the first channel of the mass block 1 is in clearance fit with the substrate 21 in the elastic body 2, the second channel of the mass block 1 is in clearance fit with the supporting block 23, and the mass block 1 is uniformly provided with a plurality of liquid drainage guide grooves 101 arranged at intervals along the circumferential direction.
After the differential vibration damping device 100 is connected with the differential 300 through the fixing bolt 200, the differential 300 vibration is eliminated by means of the hysteresis response of the mass block 1, the elastic deformation capacity provided by the first rubber layer 22 and the second rubber layer is utilized to provide the buffer capacity, the energy generated in the vibration is absorbed, and the damping effect on the differential vibration is met. The liquid discharge channel 101 can effectively discharge moisture accumulated near the substrate 21 during use, preventing the substrate 21 from being corroded, and the stainless steel substrate 21 further improves the corrosion resistance of the vibration damping device.
In addition, the weight of the mass block 1 can be adjusted, and different application occasions can be met by matching with the selection of rubber materials.
FIG. 7 is a schematic view of a damping assembly including the differential damping device shown in FIG. 1. As shown in fig. 7, the differential assembly includes: a differential 300 and a differential damping device 100 as described above.
The utility model also provides a differential mechanism assembly, include: the differential mechanism 300 and the differential mechanism vibration damping device 100 comprise the differential mechanism vibration damping device 100, wherein the differential mechanism vibration damping device 100 comprises a mass block 1 and an elastic body 2, a mounting channel which penetrates through the mass block 1 along the length direction is arranged in the mass block 1, and at least one liquid drainage guide groove 101 is arranged on the inner wall of the mounting channel; the elastic body 2 comprises a substrate 21 and a supporting block 23 connected on the substrate 21, wherein the substrate 21 is connected in the mounting channel and is arranged opposite to the liquid drainage guide groove 101; the support block 23 extends through the mounting channel and to the outside of the mass block 1, and a fixing member is provided in the support block 23, and the fixing member is used for connecting with the differential mechanism 300.
The differential damping device 100 is fixed to the differential 300 by the fixing bolts 200, for example, the differential 300 is connected to the case interface by the fixing bolts 200, and the case surface of the differential 300 and the outer surface of the support block 23 are flat and can be in close contact with each other. The differential assembly adopts the differential vibration damping device, and the vibration damping device is formed by the mass block and the elastic body, so that the differential assembly can be suitable for damping the translational motion of the differential. The mass block has a hysteresis response, the vibration frequency of the vibration damper can be changed by the mass block, the vibration of the differential is eliminated, the elastic body generates a friction damping effect, the resonance amplitude is eliminated, the vibration and noise problems of the vehicle are optimized, the riding comfort is improved, and the stability of the differential is improved. Meanwhile, the liquid drainage guide groove is formed in the inner wall of the mass block, corrosive liquid such as rainwater in the mass block can be drained through the liquid drainage guide groove, the corrosive liquid is prevented from being retained and accumulated in the mass block, gap corrosion is avoided, separation of the elastic body and the mass block is avoided, or the supporting block and the substrate are separated, so that the vibration reduction effect is improved, and the service life is prolonged.
The differential damping device in this embodiment has the same technical features as those of the differential damping device in the above embodiments, and may be referred to each other, and details are not repeated here.
The utility model also provides an automobile, the automobile includes like foretell differential mechanism vibration damper. The automobile adopts the differential mechanism vibration damper, and the mass block and the elastic body form the vibration damper, so that the differential mechanism vibration damper is suitable for damping the translational motion of the differential mechanism. The mass block has a hysteresis response, the vibration frequency of the vibration damper can be changed by the mass block, the vibration of the differential is eliminated, the elastic body generates a friction damping effect, the resonance amplitude is eliminated, the vibration and noise problems of the vehicle are optimized, the riding comfort is improved, and the stability of the differential is improved. Meanwhile, the liquid drainage guide groove is formed in the inner wall of the mass block, corrosive liquid such as rainwater in the mass block can be drained through the liquid drainage guide groove, the corrosive liquid is prevented from being retained and accumulated in the mass block, gap corrosion is avoided, separation of the elastic body and the mass block is avoided, or the supporting block and the substrate are separated, so that the vibration reduction effect is improved, and the service life is prolonged.
As can be seen from the above description and practice, the present invention provides a differential damping device, a differential assembly and an automobile, which have the following advantages compared with the prior art: the mass block and the elastic body form a vibration damping device, and the vibration damping device is suitable for damping the translational motion of the differential. The mass block has a hysteresis response, the vibration frequency of the vibration damper can be changed by the mass block, the vibration of the differential is eliminated, the elastic body generates a friction damping effect, the resonance amplitude is eliminated, the vibration and noise problems of the vehicle are optimized, the riding comfort is improved, and the stability of the differential is improved. Meanwhile, the liquid drainage guide groove is formed in the inner wall of the mass block, corrosive liquid such as rainwater in the mass block can be drained through the liquid drainage guide groove, the corrosive liquid is prevented from being retained and accumulated in the mass block, gap corrosion is avoided, separation of the elastic body and the mass block is avoided, or the supporting block and the substrate are separated, so that the vibration reduction effect is improved, and the service life is prolonged.
Those of ordinary skill in the art will understand that: the above description is only for the specific embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A differential damping device, comprising:
the mass block is internally provided with an installation channel which is penetrated through along the length direction, and the inner wall of the installation channel is provided with at least one liquid drainage guide groove;
the elastic body comprises a substrate and a supporting block connected to the substrate, and the substrate is connected in the mounting channel and is arranged opposite to the liquid drainage guide groove; the supporting block penetrates through the mounting channel and extends to the outer side of the mass block, a fixing piece is arranged in the supporting block, and the fixing piece is used for being connected with a differential mechanism.
2. The differential damping device according to claim 1,
the inner wall of the mounting channel is provided with a plurality of liquid drainage guide grooves which are distributed at intervals along the circumferential direction of the mounting channel.
3. The differential damping device according to claim 2,
the plurality of liquid discharge guide grooves are distributed at equal intervals along the circumferential direction of the mounting channel.
4. A differential damping device according to any one of claims 1 to 3,
the installation passageway is including the first passageway and the second passageway that communicate in proper order, the aperture of first passageway is greater than the aperture of second passageway, every the flowing back guide slot all extends along first passageway, the substrate with first passageway interference fit, the supporting block with second passageway interference fit.
5. A differential damping device according to any one of claims 1 to 3,
the supporting block is internally provided with a threaded hole which penetrates along the length direction, the fixing piece is a fixing bolt connected in the threaded hole, and the fixing bolt is in threaded connection with the differential mechanism.
6. A differential damping device according to any one of claims 1 to 3,
the outer surface of the supporting block is covered with a first rubber layer, and the supporting block is connected with the substrate through the first rubber layer.
7. The differential damping device according to claim 6,
the substrate is provided with an accommodating cavity, the cavity wall of the accommodating cavity is covered with a second rubber layer, and the supporting block is at least partially inserted into the accommodating cavity and is in vulcanization connection with the second rubber layer through the first rubber layer.
8. A differential damping device according to any one of claims 1 to 3,
the substrate is made of stainless steel materials.
9. A differential assembly, comprising:
the differential and the differential damping device according to any one of claims 1 to 8, the differential damping device comprises a mass body and an elastic body, a mounting channel penetrating along the length direction is arranged in the mass body, and at least one liquid drainage guide groove is arranged on the inner wall of the mounting channel; the elastic body comprises a substrate and a supporting block connected to the substrate, and the substrate is connected in the mounting channel and is arranged opposite to the liquid drainage guide groove; the supporting block penetrates through the mounting channel and extends to the outer side of the mass block, a fixing piece is arranged in the supporting block, and the fixing piece is used for being connected with the differential mechanism.
10. An automobile, characterized in that the automobile comprises the differential vibration damping device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921060888.2U CN210318326U (en) | 2019-07-09 | 2019-07-09 | Differential damping device, differential assembly and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921060888.2U CN210318326U (en) | 2019-07-09 | 2019-07-09 | Differential damping device, differential assembly and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210318326U true CN210318326U (en) | 2020-04-14 |
Family
ID=70149621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921060888.2U Active CN210318326U (en) | 2019-07-09 | 2019-07-09 | Differential damping device, differential assembly and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210318326U (en) |
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2019
- 2019-07-09 CN CN201921060888.2U patent/CN210318326U/en active Active
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