CN220890903U - Vibration damping rubber bushing - Google Patents
Vibration damping rubber bushing Download PDFInfo
- Publication number
- CN220890903U CN220890903U CN202322365014.0U CN202322365014U CN220890903U CN 220890903 U CN220890903 U CN 220890903U CN 202322365014 U CN202322365014 U CN 202322365014U CN 220890903 U CN220890903 U CN 220890903U
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- rubber
- limiting
- cavity
- inner core
- vibration
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- 238000013016 damping Methods 0.000 title claims description 25
- 230000000670 limiting effect Effects 0.000 claims abstract description 143
- 230000009467 reduction Effects 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 description 14
- 241001247986 Calotropis procera Species 0.000 description 6
- 239000004636 vulcanized rubber Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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Abstract
The utility model provides a vibration reduction rubber bushing, which comprises an outer ring, an inner core and a rubber body vulcanized between the outer ring and the inner core; a plurality of limiting cavities are formed in the rubber body, and rubber limiting protrusions are arranged in the limiting cavities; the press-fit end of the outer ring is outwards provided with a flanging, and a rubber layer is arranged on the press-fit surface of the flanging. The vibration isolation and noise reduction device not only increases the vibration resistance of the rubber body and obtains good vibration isolation and noise reduction, but also effectively controls the stretching and compression amount of the rubber body in the overall motion, thereby improving the durability and the service life of the rubber bushing.
Description
Technical Field
The utility model relates to the technical field of vibration reduction suspension of automobile power systems, in particular to a vibration reduction rubber bushing.
Background
The electric automobile has the novel characteristics of large running torque, large starting working condition force and the like, and has higher requirements on the existing power assembly suspension device, so that the durability and the safety performance of the suspension device are particularly important.
The existing power assembly suspension comprises an inner core and an outer ring, a rubber bushing is formed between the inner core and the outer ring after vulcanization of a rubber body, and the rubber bushing is compressed into a bracket after diameter reduction. However, in the running process of the automobile, under the action of various factors such as various complex pavements, various engine working conditions, the preload of the engine and the like, certain jolt can be generated, and after long-time use, the rubber body in the suspension device is subjected to multiple stretching and compression and can be gradually split, so that the suspension device is finally damaged and fails.
Disclosure of utility model
In order to solve the above problems, the present utility model provides a vibration damping rubber bushing comprising an outer race, an inner core, and a rubber body vulcanized between the outer race and the inner core; a plurality of limiting cavities are formed in the rubber body, and rubber limiting protrusions are arranged in the limiting cavities; the press-fit end of the outer ring is outwards provided with a flanging, and a rubber layer is arranged on the press-fit surface of the flanging.
Preferably, a plurality of rubber limit protrusions are distributed on the periphery of the inner core.
Preferably, the cross section of inner core is similar diamond, be equipped with the sand grip between two adjacent lateral surfaces of inner core, a plurality of the sand grip stretches into respectively in a plurality of spacing cavity, be equipped with on the sand grip the spacing arch of rubber.
Preferably, the plurality of limiting cavities comprise axisymmetric first limiting cavities, axisymmetric second limiting cavities, axisymmetric third limiting cavities and axisymmetric fourth limiting cavities, and the first limiting cavities and the second limiting cavities are distributed along the X direction and are positioned at two sides of the inner core; the third limit cavity and the fourth limit cavity are distributed along the Z direction and are positioned at two sides of the inner core;
The rubber limiting protrusions comprise axisymmetric first rubber limiting protrusions and second rubber limiting protrusions, and the first rubber limiting protrusions and the second rubber limiting protrusions are distributed along the X direction and are positioned on two sides of the inner core; the first rubber limiting protrusion is positioned in the first limiting cavity, and the second rubber limiting protrusion is positioned in the second limiting cavity;
The plurality of rubber limiting protrusions comprise axisymmetric third rubber limiting protrusions and fourth rubber limiting protrusions, and the third rubber limiting protrusions and the fourth rubber limiting protrusions are distributed along the Z direction and are positioned on two sides of the inner core; the third rubber limiting protrusion is located in the third limiting cavity, and the fourth rubber limiting protrusion is located in the fourth limiting cavity.
Preferably, in the X direction, a gap is formed between the first rubber limiting protrusion and the first limiting cavity, and a gap is formed between the second rubber limiting protrusion and the second limiting cavity;
In the Z direction, a gap is reserved between the third rubber limiting protrusion and the third limiting cavity, and a gap is reserved between the fourth rubber limiting protrusion and the fourth limiting cavity.
Preferably, the surface of the first limiting cavity opposite to the first rubber limiting protrusion and the surface of the second limiting cavity opposite to the second rubber limiting protrusion are both planes;
The surface of the third limiting cavity opposite to the third rubber limiting protrusion and the surface of the fourth limiting cavity opposite to the fourth rubber limiting protrusion are wavy surfaces formed by a plurality of arc surfaces.
Preferably, the limiting cavity is butterfly-shaped.
Preferably, the inner core is provided with a through hole or/and a lightening hole.
Preferably, the inner core has both ends longer than both ends of the outer ring in the axial direction.
Preferably, the vibration damping rubber bushing is a primary rubber bushing of a secondary vibration damping suspension or a rubber bushing of a single-stage vibration damping suspension.
Compared with the prior art, the utility model has the following technical effects:
1. The rubber body is provided with a plurality of limiting cavities along the axial direction, and rubber limiting protrusions are arranged in the limiting cavities, and the limiting cavities and the rubber limiting protrusions are all arranged along the axial direction of the rubber body, so that the shock resistance of the rubber body is increased, good vibration isolation and noise reduction are obtained, the stretching and compression amount of the rubber body in the overall motion is effectively controlled, and the durability and the service life of the rubber bushing are improved;
2. The pressure equipment end of outer lane outwards is equipped with the turn-ups, sets up the purpose of turn-ups in order to increase and pressure equipment (damping suspension includes support and rubber bush, is equipped with the mounting hole that is used for installing rubber bush on the support, and the pressure equipment end of rubber bush needs to press-fit in the mounting hole of support through pressure equipment) reduce the slope pressure equipment and lead to the emergence of pressure equipment poor.
3. The vulcanized rubber layer is arranged on the press-mounting surface of the flanging, and the vulcanized rubber layer can effectively prevent the occurrence of abnormal collision when the axial large load touches the peripheral metal plates.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of a vibration damping rubber bushing according to an embodiment of the present utility model;
Fig. 2 is a cross-sectional view of a vibration damping rubber bushing provided by an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, the vibration damping rubber bushing provided in the present embodiment may be a primary rubber bushing of a secondary vibration damping suspension of an electric vehicle motor, or may be a rubber bushing of a single-stage vibration damping suspension, which is not limited in the present utility model. The vibration damping rubber bushing comprises an outer ring 1, an inner core 3 and a rubber body 2 vulcanized between the outer ring 1 and the inner core 3, wherein the outer ring 1, the inner core 3 and the rubber body 2 are coaxial and vulcanized into a whole. The pressure equipment end of outer lane 1 outwards is equipped with turn-ups 5, sets up the purpose of turn-ups 5 in order to increase and pressure equipment (damping suspension includes support and rubber bush, is equipped with the mounting hole that is used for installing rubber bush on the support, and the pressure equipment end of rubber bush needs to press-fit in the mounting hole of support through pressure equipment) the contact surface of reduction slope pressure equipment leads to the emergence of pressure equipment bad. The press-mounting surface of the flanging 5 is provided with a vulcanized rubber layer 4, and the vulcanized rubber layer 4 and the rubber body 2 are integrally arranged. The vulcanized rubber layer 4 can effectively prevent the collision abnormal sound generated when the axial larger load touches the peripheral metal plates. When a plurality of power assembly suspensions are used in a combined mode, two or more vulcanized rubber layers 4 can be mutually linked when being used on different left and right shaft sides, and an effective limiting effect is formed together with peripheral metal plates.
The outer ring 1 and the inner core 3 are both made of hard materials, preferably the outer ring 1 is made of steel, and the inner core 3 is made of aluminum. Of course, the utility model is not limited in this way, and the corresponding materials can be selected according to the actual use requirements.
In this embodiment, a plurality of spacing cavitys are offered along the axial on the rubber body 2, are equipped with spacing arch of rubber in the spacing cavity, spacing cavity and the spacing arch of rubber all set up along the axial of rubber body 2, and is a plurality of spacing arch of rubber is located a plurality of respectively in the spacing cavity, consequently, both increased the shock resistance of the rubber body 2, obtain good vibration isolation and noise reduction, effectively control the tensile and the compression volume of the rubber body 2 in general motion again to rubber bushing's durability and life have been promoted.
The shape of the core 3 is not limited in this embodiment, and may be circular or other shaped. As an embodiment, the cross section of the inner core 3 is diamond-like, that is, the inner core 3 includes a diamond-like body 301, a raised line 302 is disposed between two adjacent outer side surfaces of the diamond-like body 301, the raised line 302 is disposed along the axial direction of the inner core 3, a plurality of raised lines 302 respectively extend into a plurality of spacing cavities, and the raised line 302 is provided with a rubber spacing protrusion.
The plurality of limiting cavities comprise a first limiting cavity 201 and a second limiting cavity 203 which are axisymmetric, a third limiting cavity 205 and a fourth limiting cavity 207 which are axisymmetric, the first limiting cavity 201 and the second limiting cavity 203 are distributed along the X direction and are positioned at two sides of the inner core 3, and the first limiting cavity 201 and the second limiting cavity 203 are symmetric relative to the inner core 3; the third limiting cavity 205 and the fourth limiting cavity 207 are distributed along the Z direction and are located at two sides of the inner core 3, and the third limiting cavity 205 and the fourth limiting cavity 207 are symmetrical with respect to the inner core 3.
The plurality of rubber limiting protrusions comprise axisymmetric first rubber limiting protrusions 202 and second rubber limiting protrusions 204, the first rubber limiting protrusions 202 and the second rubber limiting protrusions 204 are distributed along the X direction and are positioned on two sides of the inner core 3, and the first rubber limiting protrusions 202 and the second rubber limiting protrusions 204 are symmetric with respect to the inner core 3; the first rubber limit protrusion 202 is located in the first limit cavity 201, and the second rubber limit protrusion 204 is located in the second limit cavity 203. In the X direction, a gap is formed between the first rubber limiting protrusion 202 and the first limiting cavity 201, and a gap is formed between the second rubber limiting protrusion 204 and the second limiting cavity 203.
The plurality of rubber limiting protrusions comprise axisymmetric third rubber limiting protrusions 206 and fourth rubber limiting protrusions 208, the third rubber limiting protrusions 206 and the fourth rubber limiting protrusions 208 are distributed along the Z direction and are positioned on two sides of the inner core 3, and the third rubber limiting protrusions 206 and the fourth rubber limiting protrusions 208 are symmetric with respect to the inner core 3; the third rubber limit protrusion 206 is located in the third limit cavity 205, and the fourth rubber limit protrusion 208 is located in the fourth limit cavity 207. In the Z direction, a gap is formed between the third rubber limiting protrusion 206 and the third limiting cavity 205, and a gap is formed between the fourth rubber limiting protrusion 208 and the fourth limiting cavity 207.
The limiting cavities are butterfly-shaped. Because of different X-direction loads and Z-direction loads, the surface of the first limiting cavity 201 opposite to the first rubber limiting protrusion 202 is a plane, and the first limiting cavity 201 and the first rubber limiting protrusion 202 form limiting together; the surface of the second limiting cavity 203 opposite to the second rubber limiting protrusion 204 is a plane, and the second limiting cavity 203 and the second rubber limiting protrusion 204 together form a limit; the surface of the third limiting cavity 205 opposite to the third rubber limiting protrusion 206 is a wavy surface formed by a plurality of arc surfaces, and the third limiting cavity 205 and the third rubber limiting protrusion 206 together form a limit; the surface of the fourth limiting cavity 207 opposite to the fourth rubber limiting protrusion 208 is a wavy surface formed by a plurality of arc surfaces, and the fourth limiting cavity 207 and the fourth rubber limiting protrusion 208 together form a limit. Load is applied to the X-shaped rubber main spring 209 through the inner core 3 (because four limit cavities are symmetrically formed in the rubber body 2, the X-shaped rubber main spring 209 is formed), and in the X direction (Z direction is the same), the inner core 3 is enabled to move towards the plane limit of the first limit cavity 201 and the plane limit of the second limit cavity 203 under the action of the load, after the plane is in soft limit contact (the first rubber limit bulge 202 and the second rubber limit bulge 204), the X-direction rigidity synthesized by the X-shaped rubber main spring 209 is overlapped, the total X rigidity is increased, the load-displacement curve is steeped, and the movement can be effectively restrained until the rubber body 2 cannot be compressed (the rigidity is extremely high) to reach the hard limit. The design limit is because: the dynamic working condition load is changeable, the load range is larger (can reach +/-12000N sometimes), the rubber body 2 with small rigidity under the heavy load is excessively deformed and extremely easy to fail, and the excessive movement displacement of the power system can also cause other failures such as pipe line damage, body collision and the like, so that the limit design is necessary. The specific limit structure size is related to the working condition load range of the motor, the protection requirement of peripheral parts, the durability requirement and the complex arrangement of the suspension system.
In this embodiment, the inner core 3 is provided with through holes and/or lightening holes, the size of which is related to the load, limit requirement and durability, and the different motors have different sizes.
In order to prevent the rubber body 2 from being deformed by force, the metal structures are touched, so that the two ends of the inner core 3 are longer than the two ends of the outer ring in the axial direction.
The two end surfaces of the rubber body 2 are provided with concave structures 6, so that the rubber body 2 has enough deformation space when being stressed, and deformation and bulge are prevented.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. A vibration damping rubber bushing comprises an outer ring, an inner core and a rubber body vulcanized between the outer ring and the inner core; the rubber body is provided with a plurality of limiting cavities, and rubber limiting protrusions are arranged in the limiting cavities; the press-fit end of the outer ring is outwards provided with a flanging, and a rubber layer is arranged on the press-fit surface of the flanging.
2. The vibration-damping rubber bushing of claim 1, wherein a plurality of said rubber stopper protrusions are distributed on the outer periphery of said inner core.
3. The vibration-damping rubber bushing according to claim 2, wherein the cross section of the inner core is diamond-like, a convex strip is arranged between two adjacent outer side surfaces of the inner core, a plurality of convex strips extend into a plurality of limiting cavities respectively, and the convex strips are provided with the rubber limiting protrusions.
4. The vibration-damping rubber bushing according to claim 3, wherein the plurality of limiting cavities comprises axisymmetric first and second limiting cavities and axisymmetric third and fourth limiting cavities, the first and second limiting cavities being distributed along an X-direction and located on both sides of the inner core; the third limit cavity and the fourth limit cavity are distributed along the Z direction and are positioned at two sides of the inner core;
The rubber limiting protrusions comprise axisymmetric first rubber limiting protrusions and second rubber limiting protrusions, and the first rubber limiting protrusions and the second rubber limiting protrusions are distributed along the X direction and are positioned on two sides of the inner core; the first rubber limiting protrusion is positioned in the first limiting cavity, and the second rubber limiting protrusion is positioned in the second limiting cavity;
The plurality of rubber limiting protrusions comprise axisymmetric third rubber limiting protrusions and fourth rubber limiting protrusions, and the third rubber limiting protrusions and the fourth rubber limiting protrusions are distributed along the Z direction and are positioned on two sides of the inner core; the third rubber limiting protrusion is located in the third limiting cavity, and the fourth rubber limiting protrusion is located in the fourth limiting cavity.
5. The vibration-damping rubber bushing of claim 4, wherein in the X-direction there is a gap between the first rubber limit projection and the first limit cavity and a gap between the second rubber limit projection and the second limit cavity;
In the Z direction, a gap is reserved between the third rubber limiting protrusion and the third limiting cavity, and a gap is reserved between the fourth rubber limiting protrusion and the fourth limiting cavity.
6. The vibration absorbing rubber bushing of claim 4, wherein a face of the first spacing cavity opposite the first rubber spacing protrusion and a face of the second spacing cavity opposite the second rubber spacing protrusion are both planar;
The surface of the third limiting cavity opposite to the third rubber limiting protrusion and the surface of the fourth limiting cavity opposite to the fourth rubber limiting protrusion are wavy surfaces formed by a plurality of arc surfaces.
7. The vibration-damping rubber bushing of claim 1, wherein the spacing cavity is butterfly-shaped.
8. The vibration-damping rubber bushing according to claim 1, wherein the inner core is provided with a via hole or/and a lightening hole.
9. The vibration-damping rubber bushing according to claim 1, wherein both ends of the inner core are longer than both ends of the outer ring in an axial direction.
10. The vibration-damping rubber bushing of claim 1, wherein the rubber bushing is a primary rubber bushing of a secondary vibration-damping mount or a rubber bushing of a single-stage vibration-damping mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322365014.0U CN220890903U (en) | 2023-08-31 | 2023-08-31 | Vibration damping rubber bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322365014.0U CN220890903U (en) | 2023-08-31 | 2023-08-31 | Vibration damping rubber bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890903U true CN220890903U (en) | 2024-05-03 |
Family
ID=90867964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322365014.0U Active CN220890903U (en) | 2023-08-31 | 2023-08-31 | Vibration damping rubber bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890903U (en) |
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2023
- 2023-08-31 CN CN202322365014.0U patent/CN220890903U/en active Active
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