CN110774879A - Multistage vibration isolation structure of electricity drive assembly suspension - Google Patents
Multistage vibration isolation structure of electricity drive assembly suspension Download PDFInfo
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- CN110774879A CN110774879A CN201910797309.0A CN201910797309A CN110774879A CN 110774879 A CN110774879 A CN 110774879A CN 201910797309 A CN201910797309 A CN 201910797309A CN 110774879 A CN110774879 A CN 110774879A
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- vibration isolation
- connector
- electric drive
- bushing
- connecting body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
Abstract
The invention discloses an electric drive assembly suspension multistage vibration isolation structure which comprises an electric drive connector connected with an electric drive assembly, a middle connector connected with the electric drive connector and a vehicle body connector connected with the middle connector, wherein a plurality of horizontally arranged primary vibration isolation bushings are arranged at the outer end of the electric drive connector, a plurality of vertically arranged secondary vibration isolation bushings are arranged between the electric drive connector and the middle connector, and a horizontally arranged tertiary vibration isolation bushing is arranged between the middle connector and the vehicle body connector. The invention aims to provide an electric drive assembly suspension multistage vibration isolation structure for reducing high-frequency squeal of the electric drive assembly.
Description
Technical Field
The invention belongs to the field of electric drive assemblies, and particularly relates to a suspension multistage vibration isolation structure of an electric drive assembly.
Background
An electric drive assembly is an engine of an electric vehicle, which generates vibration during operation and is interfered by various external vibrations to be in a complicated vibration state, causing damage to surrounding parts and riding discomfort, etc., and designers generally design suspensions for isolating and damping vibration transmission of the power assembly. At present, most of suspensions of electric automobiles are single-layer or double-layer vibration isolation, such as Chinese patent publications: CN208101608U, a two-stage damping suspension device is disclosed, including suspension device and installation base, suspension device includes the cylindric exoskeleton of both ends no bottom surface, the one-level rubber bush has been pegged graft in the inner chamber of exoskeleton, the one-level rubber bush can be dismantled with the longeron of car and be connected, the lateral wall of exoskeleton is equipped with two tile form connection stabilizer blades at least, the installation base is the arch bridge shape, the up end of installation base is equipped with a plurality of bushes and inserts the chamber, bush inserts and inserts the intracavity and has connect the second grade rubber bush, connect through screw detachable connections between stabilizer blade and the second grade rubber bush, still be equipped with the installation screw on the installation base, the installation base is connected with automotive transmission through the interact of installation screw and bolt. Compared with a traditional gasoline engine or a traditional diesel engine, the electric drive assembly is high in rotating speed and correspondingly higher in gear precision requirement. The high-frequency howling device is limited to the machining precision of the existing industrial technology, the high-frequency howling sound of the existing electric drive assembly is obvious, the isolation effect of the existing suspension structure on the high-frequency howling is poor, the noise peak value cannot be reduced, and the use experience of passengers is not favorably improved.
Disclosure of Invention
The invention provides an electric drive assembly suspension multistage vibration isolation structure for reducing high-frequency squeal of the electric drive assembly in order to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an electricity drive assembly suspension multistage vibration isolation structure, includes the connector of driving with the electricity that drives the assembly and be connected, with the intermediate junction body of driving the connector connection and the automobile body connector of being connected with the intermediate junction body of driving, the outer end of the connector of driving is equipped with the one-level vibration isolation bush that a plurality of levels were arranged, drives to be equipped with a plurality of vertical second grade vibration isolation bushes of arranging between connector and the intermediate junction body, be equipped with the tertiary vibration isolation bush that the level was arranged between intermediate junction body and the automobile body connector. The automobile body connector is detachably connected with an automobile body of an automobile, and the three-level vibration isolation bushing is located between the automobile body connector and the middle connector and is mainly used for isolating low-frequency vibration. The connector that drives electrically is equipped with one-level vibration isolation bush, drives electrically and sets up second grade vibration isolation bush between connector and the intermediate junction body to one-level vibration isolation bush and second grade vibration isolation bush position mutually perpendicular, both can keep apart the level of driving the assembly electrically and the high frequency vibration of vertical direction, thereby greatly reduced noise peak value, thereby improve and drive the assembly high frequency of driving and whistle, improve the travelling comfort of person of taking.
Preferably, the outer end of the electric drive connector is provided with a first-stage positioning sleeve corresponding to the number of the first-stage vibration isolation bushings, and the first-stage vibration isolation bushings are arranged in the first-stage positioning sleeve. Like this, when the connector that drives with the electricity drives the assembly installation, one-level position sleeve can fix a position one-level vibration isolation bush, guarantees to fix a position the accuracy.
Preferably, the outer ends of the electrically-driven connecting bodies extend to the two horizontal sides to form positioning tables respectively, the bottoms of the first-stage positioning sleeves are connected with the positioning tables, and the first-stage positioning sleeves on the positioning tables on the two sides are arranged in a central symmetry mode relative to the electrically-driven connecting bodies. Therefore, the outer end of the electric driving connector is balanced in stress on two horizontal sides, and the first-level vibration isolation bushing is favorable for exerting a damping effect.
Preferably, the connector that drives electrically is equipped with along the flange that drives the connector edge and arrange in the one side that sets up one-level vibration isolation bush, the flange extends to the outside of the connector that drives electrically, one-level position sleeve sets up the inside wall at the flange. The flange can support the side wall of the first-level positioning sleeve, the strength of the first-level positioning sleeve is improved, and the stability and reliability of installation and positioning are guaranteed.
Preferably, one side of the electrically-driven connecting body, which is close to the middle connecting body, is provided with counter bores corresponding to the number of the secondary vibration isolation bushings, the middle connecting body is provided with a secondary bushing inserting shaft which is vertically arranged downwards, and the secondary vibration isolation bushings are arranged between the inner wall of the counter bores and the outer wall of the secondary bushing inserting shaft. The secondary vibration isolation bushing is vertically arranged in a counter bore of the electric driving connecting body, and the secondary bushing insert shaft below the middle connecting body is inserted and positioned with the secondary vibration isolation bushing, so that high-frequency vibration from the electric driving assembly is effectively reduced.
Preferably, the vehicle body connecting body comprises a third-level bushing outer cylinder, the third-level vibration isolation bushing is positioned in the third-level bushing outer cylinder, and a third-level bushing insert shaft which is in inserted connection with the third-level vibration isolation bushing is arranged on one side, close to the vehicle body connecting body, of the middle connecting body.
Preferably, the outer side wall of the outer cylinder of the tertiary bushing is provided with a plurality of mounting brackets of the vehicle body connector, and the mounting brackets are provided with mounting holes.
The invention has the beneficial effects that: the high-frequency vibration noise peak value of the electric drive assembly is obviously reduced through the first-level, the second-level and the third-level vibration isolation bushings, the high-frequency squeal problem is solved, and the riding comfort is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of the primary and secondary vibration isolation bushings of the present invention;
FIG. 3 is a schematic view of the mounting structure of the present invention;
fig. 4 is a test chart of the present invention for the noise beside the ear.
In the figure: the electric drive type vehicle body vibration isolation device comprises an electric drive connector 1, a primary positioning sleeve 1a, a flange 1b, a positioning table 1c, an intermediate connector 2, a secondary bushing insertion shaft 2a, a tertiary bushing insertion shaft 2b, a vehicle body connector 3, a tertiary bushing outer cylinder 3a, a mounting bracket 4, a mounting hole 4a, a tertiary vibration isolation bushing 5, a secondary vibration isolation bushing 6, a primary vibration isolation bushing 7, an electric drive assembly 8 and a vehicle body 9.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
In the embodiment shown in fig. 1, an electrically-driven assembly suspension multistage vibration isolation structure comprises an electrically-driven connecting body 1, an intermediate connecting body 2 and a vehicle body connecting body 3, wherein one end of the electrically-driven connecting body 1 is connected with an electrically-driven assembly 8, the other end of the electrically-driven connecting body 1 is connected with the intermediate connecting body 2, and the other end of the intermediate connecting body 2 is connected with the vehicle body connecting body 3.
Referring to fig. 2 and 3, the outer end of the electric driving connecting body 1 is provided with a plurality of horizontally arranged primary vibration isolating bushings 7, and the primary vibration isolating bushings 7 are used for being connected with the side surface of an electric driving assembly 8. The outer end of the electric drive connector 1 is provided with a first-stage positioning sleeve 1a corresponding to the number of the first-stage vibration isolation bushings 7, and the first-stage vibration isolation bushings 7 are arranged in the first-stage positioning sleeve 1 a. The outer end of the electrically-driven connector 1 extends to two horizontal sides to form a positioning table 1c, the bottom of the first-stage positioning sleeve 1a is connected with the positioning table 1c, and the first-stage positioning sleeves 1a on the positioning tables 1c on the two sides are arranged in a central symmetry mode relative to the electrically-driven connector 1. The connector 1 that drives electrically is equipped with along driving flange 1b that the connector 1 edge was arranged that drives electrically in the one side that sets up one-level vibration isolation bush 7, and flange 1b extends to the outside of driving the connector 1 electrically, and one-level position sleeve 1a sets up the inside wall at flange 1 b.
Electrically drive and be equipped with a plurality of vertical second grade vibration isolation bush 6 of arranging between connector 1 and the intermediate connection body 2, electrically drive one side that connector 1 is close to intermediate connection body 2 and be equipped with the counter bore that corresponds with 6 quantity of second grade vibration isolation bush, intermediate connection body 2 is equipped with the vertical second grade bush of arranging downwards and inserts axle 2a, and second grade vibration isolation bush 6 sets up and inserts between axle 2a outer wall at counter bore inner wall and second grade bush.
A horizontally arranged tertiary vibration isolation bushing 5 is arranged between the intermediate connecting body 2 and the vehicle body connecting body 3. The vehicle body connector 3 comprises a third-level bushing outer cylinder 3a, a third-level vibration isolation bushing 5 is positioned in the third-level bushing outer cylinder 3a, and a third-level bushing insert shaft 2b which is in inserted connection with the third-level vibration isolation bushing 5 is arranged on one side, close to the vehicle body connector 3, of the middle connector 2. The outer side wall of the outer cylinder 3a of the three-stage bushing is provided with a plurality of mounting brackets 4, and the mounting brackets 4 are provided with mounting holes 4 a.
In actual installation, the electricity of multistage vibration isolation structure drives connector 1 and drives assembly 8 with the electricity and be connected, and the side of driving assembly 8 is equipped with the axle of inserting and drives one-level vibration isolation bush 7 grafting cooperation in connector 1 with the electricity and fix, and automobile body connector 3 is fixed with automobile body 9 through installing support 4. When the electric drive assembly 8 operates, the high-frequency vibration from the electric drive assembly 8 passes through the primary vibration isolation bushing 7, the secondary vibration isolation bushing 6 and the tertiary vibration isolation bushing 5, the low-frequency vibration and the high-frequency vibration are greatly attenuated, and particularly, the peak value of the high-frequency vibration noise is obviously reduced due to the cooperation of the primary vibration isolation bushing 7 and the secondary vibration isolation bushing 6. The test result is shown in fig. 4, a black line in the graph is a test result of the noise beside the ear of the multi-stage vibration isolation structure in the embodiment, and two lines of light gray and middle gray are test results of the noise beside the ear of the vibration isolation structure in the prior art, and tests show that the peak value of a light gray line is more than 45db, the peak value of a middle gray line is about 40db, the peak value of the embodiment is about 36db, and the peak value is obviously smaller than the other two lines, so that the problem of high-frequency howling of the electric drive assembly is effectively solved, and the riding comfort is improved.
Claims (7)
1. The utility model provides an electricity drive assembly suspension multistage vibration isolation structure, characterized by includes and drives connector (1) with the electricity that drives the assembly and be connected, with the intermediate junction body (2) of driving the connector (1) to be connected and with the body connector (3) that intermediate junction body (2) are connected of driving, the outer end of driving the connector (1) to drive is equipped with one-level vibration isolation bush (7) that a plurality of levels were arranged, drives to be equipped with a plurality of vertical second grade vibration isolation bush (6) of arranging between connector (1) and intermediate junction body (2), be equipped with tertiary vibration isolation bush (5) that the level was arranged between intermediate junction body (2) and the body connector (3).
2. An electric drive assembly suspension multistage vibration isolation structure according to claim 1, wherein the outer end of the electric drive connector (1) is provided with one-stage positioning sleeves (1 a) corresponding to the number of the one-stage vibration isolation bushings (7), and the one-stage vibration isolation bushings (7) are arranged in the one-stage positioning sleeves (1 a).
3. The suspension multistage vibration isolation structure of the electric driving assembly according to claim 1, wherein the outer end of the electric driving connector (1) extends to two horizontal sides to form a positioning table (1 c), the bottom of the first-stage positioning sleeve (1 a) is connected with the positioning table (1 c), and the first-stage positioning sleeves (1 a) on the two side positioning tables (1 c) are arranged in a central symmetry manner relative to the electric driving connector (1).
4. An electric drive assembly suspension multistage vibration isolation structure according to claim 2 or 3, wherein the electric drive connecting body (1) is provided with a flange (1 b) arranged along the edge of the electric drive connecting body (1) at the side where the primary vibration isolation bushing (7) is arranged, the flange (1 b) extends to the outer side of the electric drive connecting body (1), and the primary positioning sleeve (1 a) is arranged on the inner side wall of the flange (1 b).
5. An electric drive assembly suspension multistage vibration isolation structure according to claim 1, wherein one side of the electric drive connecting body (1) close to the intermediate connecting body (2) is provided with counter bores corresponding to the number of the secondary vibration isolation bushings (6), the intermediate connecting body (2) is provided with secondary bushing insertion shafts (2 a) arranged vertically downwards, and the secondary vibration isolation bushings (6) are arranged between the inner wall of the counter bores and the outer wall of the secondary bushing insertion shafts (2 a).
6. An electric drive assembly suspension multistage vibration isolation structure according to claim 1, wherein the vehicle body connecting body (3) comprises a tertiary bushing outer cylinder (3 a), the tertiary vibration isolation bushing (5) is positioned in the tertiary bushing outer cylinder (3 a), and a tertiary bushing insert shaft (2 b) which is in inserted connection with the tertiary vibration isolation bushing (5) is arranged on one side of the intermediate connecting body (2) close to the vehicle body connecting body (3).
7. The suspension multistage vibration isolation structure of the electric drive assembly according to claim 6, wherein the vehicle body connecting body (3) is provided with a plurality of mounting brackets (4) on the outer side wall of the outer cylinder (3 a) of the tertiary bushing, and the mounting brackets (4) are provided with mounting holes (4 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910797309.0A CN110774879B (en) | 2019-08-27 | 2019-08-27 | Multistage vibration isolation structure of electricity drive assembly suspension |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910797309.0A CN110774879B (en) | 2019-08-27 | 2019-08-27 | Multistage vibration isolation structure of electricity drive assembly suspension |
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| CN110774879A true CN110774879A (en) | 2020-02-11 |
| CN110774879B CN110774879B (en) | 2021-04-20 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202200822U (en) * | 2011-07-06 | 2012-04-25 | 上海汽车集团股份有限公司 | Shock-absorbing suspension assembly |
| WO2014091287A1 (en) * | 2012-12-10 | 2014-06-19 | Toyota Jidosha Kabushiki Kaisha | Vehicle mounting structure for electronic device |
| CN108454388A (en) * | 2018-01-11 | 2018-08-28 | 浙江零跑科技有限公司 | A kind of two-stage vibration reduction suspending device |
| CN207859928U (en) * | 2018-01-11 | 2018-09-14 | 浙江零跑科技有限公司 | A kind of two-stage vibration reduction suspending device for electric vehicle |
| CN208021174U (en) * | 2018-03-30 | 2018-10-30 | 北京新能源汽车股份有限公司 | A kind of rear suspension structure and automobile |
| CN109501565A (en) * | 2018-11-27 | 2019-03-22 | 上汽通用汽车有限公司 | Suspending apparatus for driving motor and the electric vehicle including it |
| CN109733173A (en) * | 2019-03-20 | 2019-05-10 | 麦格纳斯太尔汽车技术（上海）有限公司 | A kind of electric car second level vibration isolation powertrain mounting system |
| CN209063871U (en) * | 2018-09-25 | 2019-07-05 | 绿驰汽车科技（上海）有限公司 | A kind of motor suspending apparatus |
-
2019
- 2019-08-27 CN CN201910797309.0A patent/CN110774879B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202200822U (en) * | 2011-07-06 | 2012-04-25 | 上海汽车集团股份有限公司 | Shock-absorbing suspension assembly |
| WO2014091287A1 (en) * | 2012-12-10 | 2014-06-19 | Toyota Jidosha Kabushiki Kaisha | Vehicle mounting structure for electronic device |
| CN108454388A (en) * | 2018-01-11 | 2018-08-28 | 浙江零跑科技有限公司 | A kind of two-stage vibration reduction suspending device |
| CN207859928U (en) * | 2018-01-11 | 2018-09-14 | 浙江零跑科技有限公司 | A kind of two-stage vibration reduction suspending device for electric vehicle |
| CN208021174U (en) * | 2018-03-30 | 2018-10-30 | 北京新能源汽车股份有限公司 | A kind of rear suspension structure and automobile |
| CN209063871U (en) * | 2018-09-25 | 2019-07-05 | 绿驰汽车科技（上海）有限公司 | A kind of motor suspending apparatus |
| CN109501565A (en) * | 2018-11-27 | 2019-03-22 | 上汽通用汽车有限公司 | Suspending apparatus for driving motor and the electric vehicle including it |
| CN109733173A (en) * | 2019-03-20 | 2019-05-10 | 麦格纳斯太尔汽车技术（上海）有限公司 | A kind of electric car second level vibration isolation powertrain mounting system |
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Address after: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Zero run Technology Co.,Ltd. Address before: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG LEAPMOTOR TECHNOLOGY Co.,Ltd. |
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