CN112283292A - Vibration damper, motor suspension system and electric automobile - Google Patents
Vibration damper, motor suspension system and electric automobile Download PDFInfo
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- CN112283292A CN112283292A CN202011223401.5A CN202011223401A CN112283292A CN 112283292 A CN112283292 A CN 112283292A CN 202011223401 A CN202011223401 A CN 202011223401A CN 112283292 A CN112283292 A CN 112283292A
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- 239000000725 suspension Substances 0.000 title claims abstract description 10
- 238000013016 damping Methods 0.000 claims abstract description 225
- 230000003139 buffering effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000009467 reduction Effects 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/10—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate gripping parts moved into their final position in relation to the body of the device by a separate operation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
本公开提供一种减振装置、电机悬挂系统及电动汽车，减振装置包括：第一支架、第二支架；第二减振件设置在第一支架与第二支架之间；第二减振件与第一支架接触的端面设有第一凸起结构，第一凸起结构被配置为减小第二减振件与第一支架的接触面积，和/或第二减振件与第二支架接触的端面设有第二凸起结构，第二凸起结构被配置为减小第二减振件与第二支架的接触面积；连接件依次穿过第一支架、第二减振件、第二支架。本公开提供的减振装置，将减振件与支架接触面由传统的面接触改为凸起结构的点或线接触，减小了两者的接触面积，减小了振动的传递面积，同时，凸起结构也具有良好的变形吸振效能，能够起到良好的减振效果。
The present disclosure provides a vibration damping device, a motor suspension system and an electric vehicle. The vibration damping device comprises: a first bracket and a second bracket; a second vibration damping member is arranged between the first bracket and the second bracket; The end face of the component in contact with the first bracket is provided with a first protruding structure, and the first protruding structure is configured to reduce the contact area between the second vibration damping component and the first bracket, and/or the second vibration damping component and the second vibration damping component. The end surface contacted by the bracket is provided with a second protruding structure, and the second protruding structure is configured to reduce the contact area between the second vibration damping member and the second bracket; the connecting member passes through the first bracket, the second vibration damping member, Second bracket. The vibration damping device provided by the present disclosure changes the contact surface between the damping member and the bracket from the traditional surface contact to the point or line contact of the raised structure, which reduces the contact area of the two, reduces the transmission area of vibration, and at the same time , the raised structure also has good deformation and vibration absorption performance, and can play a good vibration reduction effect.
Description
Technical Field
The disclosure belongs to the technical field of electric automobiles, and particularly relates to a vibration damper, a motor suspension system and an electric automobile.
Background
The electric automobile is driven by a motor through a power battery serving as a main driving energy source, fuel oil does not need to be consumed, and zero pollutant emission is realized.
When the electric automobile runs, the motor rotates at a high speed, and in the rotation process of the rotor, the rotor is influenced by excitation of self-cogging torque, electromagnetic force and the like to generate vibration, and the vibration generated by the motor is transmitted to an automobile frame in contact with the motor and then to an automobile body and a seat, and in the transmission process of the vibration. Due to the effect of resonance, the vibration transmitted to the automobile body and the seat is larger, so that the slight vibration of the motor can influence the experience of a driver and passengers, and is not good for the health for a long time.
Disclosure of Invention
Therefore, the technical problem that this disclosure will solve is that the vibration that the motor produced transmits for car frame, and then transmits automobile body and seat, influences electric automobile's use and experiences and passenger health to provide a vibration damper, motor suspension and electric automobile.
In order to solve the above problem, the present disclosure provides a vibration damping device including:
a first bracket and a second bracket;
the second vibration damping piece is arranged between the first bracket and the second bracket; the end face, in contact with the first support, of the second vibration damping part is provided with a first protruding structure, the first protruding structure is configured to reduce the contact area of the second vibration damping part and the first support, and/or the end face, in contact with the second support, of the second vibration damping part is provided with a second protruding structure, and the second protruding structure is configured to reduce the contact area of the second vibration damping part and the second support;
the connecting piece penetrates through the first support, the second vibration reduction piece and the second support in sequence.
In some embodiments, the vibration damping device comprises an elastic member, the elastic member is connected between the connecting member and the second vibration damping member in a penetrating mode, and the elastic member is configured to support the first support and the second support and absorb vibration energy between the first support and the second support in a buffering mode.
In some embodiments, when the damping device comprises a first protruding structure, a second protruding structure, the first protruding structure and the second protruding structure do not coincide in projection along the axial direction of the second damping member.
In some embodiments, a first fixing plate is disposed between the second damping member and the first bracket, the first fixing plate being provided with a first fixing hole configured to receive and fix an end portion of the elastic member; a second fixing plate is arranged between the second vibration reduction piece and the second support, and is provided with a second fixing hole which is configured to accommodate and fix the end portion of the elastic piece.
In some embodiments, the first fixing plate is connected to the first bracket by a second connector; the second fixing plate is connected with the second bracket through a second connecting piece.
In some embodiments, the damping device further includes a first damping member disposed on a side of the first support away from the second damping member, the first support has a first connection hole, one end of the first damping member extends into the first connection hole, the connection member passes through the first damping member, and the first damping member is configured to make the first support and the connection member not directly contact.
In some embodiments, a third protrusion structure is disposed on an end surface of the first vibration damping member contacting the first bracket, and the third protrusion structure is configured to reduce a contact area of the first vibration damping member and the first bracket.
In some embodiments, a first baffle plate is arranged at the end part, away from the first bracket, of the first vibration reduction part, the connecting part penetrates through the first vibration reduction part after penetrating through the first baffle plate, a fourth protruding structure is arranged on the end face, in contact with the first baffle plate, of the first vibration reduction part, and the fourth protruding structure is configured to reduce the contact area of the first vibration reduction part and the first baffle plate.
In some embodiments, the first damping member includes a step member and a ring member, the step member and the ring member have different damping energies, the step member has a minimum outer diameter equal to the diameter of the first connection hole, the ring member has an inner diameter equal to the diameter of the first connection hole, and the ring member is sleeved on the step member.
In some embodiments, the damping device further includes a third damping member, the third damping member is disposed on a side of the second bracket away from the second damping member, the second bracket has a second connection hole, one end of the third damping member extends into the second connection hole, the connecting member is in contact with the second bracket through the third damping member, and the third damping member is configured to enable the second bracket to be not in direct contact with the connecting member.
In some embodiments, a fifth convex structure is arranged on the end surface of the third damping part, which is in contact with the second bracket, and the fifth convex structure is configured to reduce the contact area of the third damping part and the second bracket.
In some embodiments, a second baffle plate is arranged at the end part, away from the second bracket, of the third vibration attenuation piece, the connecting piece penetrates through the third vibration attenuation piece and then penetrates out of the second baffle plate, and a sixth protruding structure is arranged on the end face, in contact with the second baffle plate, of the third vibration attenuation piece and configured to reduce the contact area between the third vibration attenuation piece and the second baffle plate.
In some embodiments, the third damping member includes a step member and a ring member, the damping energy of the step member is different from that of the ring member, the minimum outer diameter of the step member is equal to the diameter of the second connecting hole, the inner diameter of the ring member is equal to the diameter of the second connecting hole, and the ring member is sleeved on the step member.
In some embodiments, when the second damping member includes the first projection structure, the first projection structure is a bead structure extending radially of the second damping member; and/or when the second damping piece comprises a second convex structure, the second convex structure is a convex strip structure extending along the radial direction of the second damping piece; and/or when the first damping piece comprises a third bulge structure, the third bulge structure is a convex strip structure extending along the radial direction of the first damping piece; and/or when the first damping piece comprises a fourth bulge structure, the fourth bulge structure is a convex strip structure extending along the radial direction of the first damping piece; and/or when the third damping piece comprises a fifth convex structure, the fifth convex structure is a convex strip structure extending along the radial direction of the third damping piece; and/or when the third damping piece comprises a sixth convex structure, the sixth convex structure is a convex strip structure extending along the radial direction of the third damping piece.
A motor suspension system adopts the damping device.
An electric automobile adopts foretell damping device.
The vibration damping device, the motor suspension system and the electric automobile provided by the disclosure at least have the following beneficial effects:
the vibration damping device provided by the disclosure changes the contact surface of the vibration damping piece and the support from the traditional surface contact into the point or line contact of the convex structure, reduces the contact area of the vibration damping piece and the support, reduces the transmission area of the vibration, and meanwhile, the convex structure also has good deformation vibration absorption efficiency and can play a good vibration damping effect.
Drawings
Fig. 1 is a schematic structural view of a vibration damping device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a first bracket and a second bracket according to an embodiment of the disclosure;
FIG. 3 is a schematic structural view of a second damping member according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a first fixing plate and a second fixing plate according to an embodiment of the disclosure;
FIG. 5 is a schematic structural view of the stepped member of the disclosed embodiment;
FIG. 6 is a schematic structural view of a ring according to an embodiment of the disclosure;
fig. 7 is a schematic structural view of a bushing according to an embodiment of the disclosure.
The reference numerals are represented as:
1. a first bracket; 2. a second bracket; 3. a second damping member; 4. a first bump structure; 5. a second bump structure; 6. a connecting member; 7. an elastic member; 8. a first fixing plate; 9. a first fixing hole; 10. a second fixing plate; 11. a second fixing hole; 12. a second connecting member; 13. a first damping member; 14. a first connection hole; 15. a third bump structure; 16. a first baffle plate; 17. a fourth bump structure; 18. a stepped piece; 19. an annular member; 20. a third damping member; 21. a second connection hole; 22. a fifth bump structure; 23. a second baffle; 24. a sixth bump structure; 25. a bushing.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the following embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. It is to be understood that the described embodiments are merely a subset of the disclosed embodiments and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
With reference to fig. 1 to 6, an embodiment of the present disclosure provides a vibration damping device, including: a first bracket 1 and a second bracket 2; the second vibration damper 3, the second vibration damper 3 is set up between first support 1 and second support 2; the end face of the second vibration damper 3, which is in contact with the first bracket 1, is provided with a first protruding structure 4, the first protruding structure 4 is configured to reduce the contact area of the second vibration damper 3 and the first bracket 1, and/or the end face of the second vibration damper 3, which is in contact with the second bracket 2, is provided with a second protruding structure 5, and the second protruding structure 5 is configured to reduce the contact area of the second vibration damper 3 and the second bracket 2; the connecting piece 6, connecting piece 6 pass first support 1, second damping piece 3, second support 2 in proper order.
The vibration damping device provided by the embodiment of the disclosure changes the contact surface of the vibration damping piece and the support from the traditional surface contact into the point or line contact of the convex structure, reduces the contact area of the vibration damping piece and the support, reduces the transmission area of the vibration, and meanwhile, the convex structure also has good deformation vibration absorption efficiency and can play a good vibration damping effect.
In some embodiments, the vibration damping device includes an elastic member 7, such as a spring, the elastic member 7 is inserted between the connecting member 6 and the second vibration damping member 3, the elastic member 7 is configured to support the first bracket 1 and the second bracket 2, and absorb and cushion vibration energy between the first bracket 1 and the second bracket, and the elastic member 7 is used as a support member of the motor bracket, which can play a role in supporting the motor to protect the second vibration damping member 3, and can also realize buffering and vibration damping functions by utilizing compressibility of the elastic member 7.
In some embodiments, when the vibration damping device includes the first protruding structure 4 and the second protruding structure 5, the projections of the first protruding structure 4 and the second protruding structure 5 along the axial direction of the second vibration damping member 3 are not overlapped, that is, the protruding structures on the two end surfaces of the second vibration damping member 3 are staggered, so that the direct transmission of the motor vibration through the upper and lower protruding structures is avoided, and the transmission of the motor vibration is reduced.
In some embodiments, the overall thickness of the second vibration damping member 3 is the distance between the first fixing plate 8 and the second fixing plate 10 after the elastic member 7 is compressed, and in an initial state when the motor is not operated, the elastic member 7 is compressed by the gravity of the motor, and the elastic member 7 plays a role of supporting the motor and simultaneously protects the second vibration damping member 3 in an uncompressed deformation state.
In some embodiments, a first fixing plate 8 is disposed between the second vibration damper 3 and the first bracket 1, the first fixing plate 8 is provided with a first fixing hole 9, the first fixing hole 9 is configured to receive and fix an end of the elastic member 7, and the first fixing hole 9 may be designed as a stepped hole, an internal threaded hole; a second fixing plate 10 is disposed between the second damper 3 and the second bracket 2, the second fixing plate 10 is provided with a second fixing hole 11, and the second fixing hole 11 is configured to receive and fix an end portion of the elastic member 7. The main function of the first fixing plate 8 is to fix the elastic element 7, and the elastic element 7 is limited by the first fixing hole 9, and can only be compressed in the axial direction, and is completely limited in the directions perpendicular to the axial direction, so that the elastic element can only deform and absorb energy when the first bracket 1 and the second bracket 2 displace mutually.
In some embodiments, the first fixing plate 8 is connected to the first bracket 1 by a second connecting member 12; the second fixing plate 10 is connected with the second bracket 2 through the second connecting member 12, the second connecting member 12 is further sleeved with a bushing 25, and the bushing 25 comprises two parts: metal covering and rubber, metal covering protection rubber avoids damaging because of the screw thread, and rubber can reduce the vibration of motor to automobile body horizontal direction simultaneously.
In some embodiments, the inner diameters of the first fixing hole 9 and the second fixing hole 11 are larger than the outer diameter of the connecting piece 6, so that rigid contact is avoided, and vibration transmission is avoided.
In some embodiments, the damping device further includes a first damping member 13 and a third damping member 20, the first damping member 13 is disposed on a side of the first bracket 1 away from the second damping member 3, the first bracket 1 has a first connection hole 14, one end of the first damping member 13 extends into the first connection hole 14, the connection member 6 passes through the first damping member 13, and the first damping member 13 is configured to make the first bracket 1 and the connection member 6 not directly contact. The third damping part 20 is arranged on one side of the second support 2 far away from the second damping part 3, a second connecting hole 21 is formed in the second support 2, one end of the third damping part 20 extends into the second connecting hole 21, the connecting part 6 is in contact with the second support 2 through the third damping part 20, and the third damping part 20 is configured to enable the second support 2 to be not in direct contact with the connecting part 6.
As the only rigid connecting part between the first bracket 1 and the second bracket 2, the connecting piece 6 adopts a standard or non-standard bolt, in order to prevent the connecting piece 6 from directly contacting with the first bracket 1 or the second bracket 2 to transmit vibration, a first vibration damping piece 13 is arranged between the connecting piece 6 and the first bracket 1 to prevent the connecting piece 6 from directly contacting with the first bracket 1 to transmit vibration, and a second vibration damping piece 3 is arranged between the connecting piece 6 and the second bracket 2 to prevent the connecting piece 6 from directly contacting with the second bracket 2 to transmit vibration.
In some embodiments, a third protrusion structure 15 is disposed on an end surface of the first vibration damping member 13 contacting the first bracket 1, the third protrusion structure 15 is configured to reduce a contact area of the first vibration damping member 13 and the first bracket 1, a fifth protrusion structure 22 is disposed on an end surface of the third vibration damping member 20 contacting the second bracket 2, and the fifth protrusion structure 22 is configured to reduce a contact area of the third vibration damping member 20 and the second bracket 2, so that a surface contact between the first vibration damping member 13 and the first bracket 1 and a surface contact between the third vibration damping member 20 and the second bracket 2 are changed into a line and a point contact, thereby reducing a vibration transmission path.
In some embodiments, the end of the first damping part 13 away from the first bracket 1 is provided with a first baffle 16, the connecting part 6 penetrates into the first damping part 13 after penetrating through the first baffle 16, a fourth protrusion structure 17 is arranged on the end surface of the first damping part 13 contacting with the first baffle 16, and the fourth protrusion structure 17 is configured to reduce the contact area of the first damping part 13 and the first baffle 16. The end part, far away from the second bracket 2, of the third vibration damping part 20 is provided with a second baffle plate 23, the connecting part 6 penetrates out of the second baffle plate 23 after passing through the third vibration damping part 20, a sixth protruding structure 24 is arranged on the end face, in contact with the second baffle plate 23, of the third vibration damping part 20, and the sixth protruding structure 24 is configured to reduce the contact area between the third vibration damping part 20 and the second baffle plate 23. Because the end of the connecting piece 6, namely the nut part or the nut part, has a small area and a small stressed area in the penetration fixation, and the first damping piece 13 and the third damping piece 20 are made of rubber and other materials, the local texture hardness is small, so that the problems of small stressed area and insufficient fixation can be caused, and therefore, the first baffle plate 16 and the second baffle plate 23 are arranged, the stressed areas of the first damping piece 13 and the third damping piece 20 are increased, and the connection strength of all the parts is ensured.
In some embodiments, each of the first and second damping members 13 and 3 includes a step member 18 and a ring member 19, the step member 18 and the ring member 19 have different damping energies, a minimum outer diameter of the step member 18 is equal to a diameter of the first or second connection hole 14 or 21, an inner diameter of the ring member 19 is equal to a diameter of the first or second connection hole 14 or 21, and the ring member 19 is fitted over the step member 18.
For example, on the first vibration damper 13, the third protruding structure 15 is arranged at the end of the stepped part 18 with the larger outer diameter, the stepped part 18 is in contact with the first baffle plate 16, the fourth protruding structure 17 is arranged on the annular part 19, the annular part 19 is in contact with the first bracket 1, and the stress of the first baffle plate 16 and the first bracket 1 is transmitted through the matching of the stepped part 18 and the stepped ring surface of the annular part 19, so that a certain vibration damping effect can be achieved.
Meanwhile, the upper plane and the lower plane of the first vibration damping part 13 are matched to form a matching body with the upper surface and the lower surface both convex, and the two vibration damping parts, namely the stepped part 18 and the annular part 19, can be made of different hardness materials or different materials, so that the first vibration damping part 13 can generate a multi-stage vibration damping effect.
The third damping member 20 also has the same multistage damping effect.
In some embodiments, when the second damping member 3 comprises the first projection structure 4, the first projection structure 4 is a rib structure extending radially along the second damping member 3; and/or, when the second damping member 3 comprises the second protrusion structure 5, the second protrusion structure 5 is a convex strip structure extending along the radial direction of the second damping member 3; and/or, when the first damping part 13 comprises the third protrusion structure 15, the third protrusion structure 15 is a convex strip structure extending along the radial direction of the first damping part 13; and/or, when the first damping part 13 comprises the fourth protrusion structure 17, the fourth protrusion structure 17 is a convex strip structure extending along the radial direction of the first damping part 13; and/or, when the third damping member 20 includes the fifth projection structure 22, the fifth projection structure 22 is a rib structure extending along the radial direction of the third damping member 20; and/or, when the third damping member 20 includes the sixth projection structure 24, the sixth projection structure 24 is a rib structure extending along the radial direction of the third damping member 20.
The protruding structure in this embodiment adopts along radial sand grip structure, can guarantee the homogeneity and the stability that the sand grip supported, can realize again reducing area of contact, reduces the function of vibration transmission.
In this embodiment, the connecting member 6, such as a bolt, sequentially passes through the first baffle 16, the first vibration damping member 13, the first bracket 1, the first fixing plate 8, the second vibration damping member 3, the second fixing plate 10, the second bracket 2, the third vibration damping member 20, and the second baffle 23, and the end of the connecting member is fastened by a nut.
From the principle, this disclosure mainly is to the automobile operation, and the motor receives the influence of certain excitation of self to produce vibration, and the motor vibration can be transmitted the automobile body through suspension system, influences the experience, so use elastic component and damping piece on its transfer path, realize multistage damping, realize the ascending damping in a plurality of directions. Elastic component 6 the primary function is support motor and with the effect of protection second damping piece 3 when initial condition, after the motor operation, when producing the ascending vibration of vertical direction, elastic component 7 atress can continue compression deformation, play buffering damping effect, the first protruding structure 4 of second damping piece 3 simultaneously, protruding structure 5 of second also can be compressed, play damping effect, and change into line contact by traditional face contact, realize damping effect. Meanwhile, when the force is too large, the protrusions on the first damping part 13 and the third damping part 20 are compressed to achieve the damping effect, so that the multi-stage damping effect is achieved. When the connecting member 6 passes through the first connecting hole 14 of the first bracket 1 and the second connecting hole 21 of the second bracket 2 in the horizontal direction, the connecting member is separated by the step-shaped member 18 of the first damping member 13 or the third damping member 20, so that the connecting member is prevented from rigidly contacting the first bracket 1 and the second bracket 2, and the damping effect is achieved.
A motor suspension system adopts the damping device.
An electric automobile adopts foretell damping device.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present disclosure is to be considered as limited only by the preferred embodiments and not limited to the specific embodiments described herein, and all changes, equivalents and modifications that come within the spirit and scope of the disclosure are desired to be protected. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present disclosure, and these improvements and modifications should also be considered as the protection scope of the present disclosure.
Claims (16)
1. A vibration damping device, comprising:
a first bracket (1) and a second bracket (2);
a second damping element (3), the second damping element (3) being arranged between the first carrier (1) and the second carrier (2); the end face of the second damping part (3) contacting the first bracket (1) is provided with a first protruding structure (4), the first protruding structure (4) is configured to reduce the contact area of the second damping part (3) and the first bracket (1), and/or the end face of the second damping part (3) contacting the second bracket (2) is provided with a second protruding structure (5), and the second protruding structure (5) is configured to reduce the contact area of the second damping part (3) and the second bracket (2);
the connecting piece (6) penetrates through the first support (1), the second vibration damping piece (3) and the second support (2) in sequence.
2. The vibration damping device according to claim 1, characterized in that the vibration damping device comprises an elastic member (7), the elastic member (7) is penetrated between the connecting member (6) and the second vibration damping member (3), and the elastic member (7) is configured to support the first bracket (1) and the second bracket (2) and absorb vibration energy between the first bracket (1) and the second bracket in a buffering manner.
3. Damping device according to claim 1, characterized in that when the damping device comprises a first (4) and a second (5) protruding structure, the projection of the first (4) and the second (5) protruding structure in the axial direction of the second damping part (3) is not coincident.
4. Damping device according to claim 2, characterized in that a first fixing plate (8) is provided between the second damping member (3) and the first bracket (1), the first fixing plate (8) being provided with a first fixing hole (9), the first fixing hole (9) being configured to receive and fix an end of the elastic member (7); a second fixing plate (10) is arranged between the second vibration damper (3) and the second bracket (2), the second fixing plate (10) is provided with a second fixing hole (11), and the second fixing hole (11) is configured to receive and fix an end of the elastic member (7).
5. Damping device according to claim 4, characterized in that the first fixing plate (8) is connected to the first bracket (1) by means of a second connection (12); the second fixing plate (10) is connected with the second bracket (2) through a second connecting piece (12).
6. The damping device according to claim 1, characterized in that the damping device further comprises a first damping member (13), the first damping member (13) is arranged on the side of the first bracket (1) far away from the second damping member (3), the first bracket (1) is provided with a first connecting hole (14), one end of the first damping member (13) extends into the first connecting hole (14), the connecting member (6) passes through the first damping member (13), and the first damping member (13) is configured to enable the first bracket (1) and the connecting member (6) not to be in direct contact.
7. The damping device according to claim 6, characterized in that a third protrusion structure (15) is provided on an end surface of the first damping member (13) contacting the first bracket (1), the third protrusion structure (15) being configured to reduce a contact area of the first damping member (13) and the first bracket (1).
8. The vibration damping device according to claim 6, characterized in that a first baffle plate (16) is arranged at the end of the first vibration damping member (13) far away from the first bracket (1), the connecting member (6) penetrates into the first vibration damping member (13) after penetrating through the first baffle plate (16), a fourth protruding structure (17) is arranged on the end face of the first vibration damping member (13) contacting with the first baffle plate (16), and the fourth protruding structure (17) is configured to reduce the contact area of the first vibration damping member (13) and the first baffle plate (16).
9. Damping device according to any of claims 6 to 8, characterized in that the first damping member (13) comprises a step (18), a ring (19), the step (18) and the ring (19) being of different damping energy, the step (18) having a minimum outer diameter equal to the diameter of the first connection hole (14), the ring (19) having an inner diameter equal to the diameter of the first connection hole (14), the ring (19) being fitted over the step (18).
10. The vibration damping device according to claim 1, characterized in that the vibration damping device further comprises a third vibration damping member (20), the third vibration damping member (20) is arranged on the side of the second bracket (2) far away from the second vibration damping member (3), the second bracket (2) is provided with a second connecting hole (21), one end of the third vibration damping member (20) extends into the second connecting hole (21), the connecting member (6) is contacted with the second bracket (2) through the third vibration damping member (20), and the third vibration damping member (20) is configured to enable the second bracket (2) to be not in direct contact with the connecting member (6).
11. The damping device according to claim 10, characterized in that a fifth projection structure (22) is provided on an end surface of the third damping member (20) contacting the second bracket (2), the fifth projection structure (22) being configured to reduce a contact area of the third damping member (20) and the second bracket (2).
12. The damping device according to claim 10, characterized in that a second baffle plate (23) is arranged at the end of the third damping member (20) far away from the second bracket (2), the connecting member (6) penetrates through the third damping member (20) and then penetrates out of the second baffle plate (23), a sixth protrusion structure (24) is arranged on the end surface of the third damping member (20) contacting the second baffle plate (23), and the sixth protrusion structure (24) is configured to reduce the contact area of the third damping member (20) and the second baffle plate (23).
13. The vibration damping device according to any one of claims 10 to 11, wherein the third vibration damping member (20) includes a step member (18) and a ring member (19), the step member (18) and the ring member (19) have different vibration damping energy, the step member (18) has a minimum outer diameter equal to the diameter of the second connecting hole (21), the ring member (19) has an inner diameter equal to the diameter of the second connecting hole (21), and the ring member (19) is fitted over the step member (18).
14. Damping device according to any of claims 1-13, characterized in that when the second damping member (3) comprises a first relief structure (4), the first relief structure (4) is a bead structure extending radially along the second damping member (3); and/or, when the second damping part (3) comprises a second convex structure (5), the second convex structure (5) is a convex strip structure extending along the radial direction of the second damping part (3); and/or, when the first damping part (13) comprises a third bump structure (15), the third bump structure (15) is a convex strip structure extending along the radial direction of the first damping part (13); and/or, when the first damping part (13) comprises a fourth raised structure (17), the fourth raised structure (17) is a raised line structure extending along the radial direction of the first damping part (13); and/or, when the third damping part (20) comprises a fifth raised structure (22), the fifth raised structure (22) is a raised line structure extending along the radial direction of the third damping part (20); and/or, when the third damping part (20) comprises a sixth bump structure (24), the sixth bump structure (24) is a convex strip structure extending along the radial direction of the third damping part (20).
15. A suspension system for an electric motor, characterized in that a damping device according to any one of claims 1-14 is used.
16. An electric vehicle, characterized in that the vibration damping device according to any one of claims 1 to 14 is used.
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| CN202011223401.5A CN112283292B (en) | 2020-11-05 | 2020-11-05 | Vibration reduction device, motor suspension system and electric vehicle |
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| CN202011223401.5A CN112283292B (en) | 2020-11-05 | 2020-11-05 | Vibration reduction device, motor suspension system and electric vehicle |
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| CN112283292A true CN112283292A (en) | 2021-01-29 |
| CN112283292B CN112283292B (en) | 2024-12-13 |
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| CN112283292B (en) | 2024-12-13 |
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