CN117656730A - Damping adjustment device, suspension device, and vehicle - Google Patents
Damping adjustment device, suspension device, and vehicle Download PDFInfo
- Publication number
- CN117656730A CN117656730A CN202310485399.6A CN202310485399A CN117656730A CN 117656730 A CN117656730 A CN 117656730A CN 202310485399 A CN202310485399 A CN 202310485399A CN 117656730 A CN117656730 A CN 117656730A
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- damping
- bushing
- hole
- inner liner
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- 238000013016 damping Methods 0.000 title claims abstract description 248
- 239000000725 suspension Substances 0.000 title claims abstract description 37
- 230000008859 change Effects 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims description 72
- 238000007906 compression Methods 0.000 claims description 72
- 230000006698 induction Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 description 11
- 230000005611 electricity Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/20—Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
- B60G17/0157—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit non-fluid unit, e.g. electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/04—Buffer means for limiting movement of arms
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/346—Throttling passages in the form of slots arranged in cylinder walls
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
- F16F9/5123—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity responsive to the static or steady-state load on the damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/41—Elastic mounts, e.g. bushings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a damping adjustment device, a suspension device and a vehicle. The damping adjustment device includes: the swing arm inner bushing, the built-in bushing and the driving piece are provided with an inner bushing damping hole, the built-in bushing is rotatably arranged in the swing arm inner bushing, the built-in bushing and the swing arm inner bushing jointly define a first cavity and a second cavity, the built-in bushing is provided with a built-in damping hole, when the inner bushing damping hole and the built-in damping hole are at least partially overlapped, the first cavity and the second cavity are communicated, and when the inner bushing damping hole and the built-in damping hole are completely staggered, the first cavity and the second cavity are isolated; the driving piece is used for driving the swing arm inner bushing or the built-in bushing to move so as to change the overlapping area of the built-in damping hole and the inner bushing damping hole. According to the damping adjusting device, damping and damping effects can be achieved, the damping adjusting device is compact in structure, and the height space can be saved when the damping adjusting device is applied to a suspension device.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a damping adjusting device, a suspension device with the damping adjusting device and a vehicle with the suspension device.
Background
In the related art, the main scheme of damping and damping at the road wheel end of the suspension device is to adopt a damper to carry out Z-direction vibration damping, however, the damping mode has defects, such as long damper adjustment period, high development difficulty coefficient, large damper volume, certain influence on tire space arrangement, and negative influence on the aspects of low-lying modeling requirement, vehicle windage and the like of the whole vehicle because the whole vehicle occupies a large space in Z-direction space arrangement.
Disclosure of Invention
The present invention aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the invention provides a damping adjusting device which is compact in structure.
The invention also provides a suspension device with the damping adjusting device.
The invention also provides a vehicle with the suspension device.
The damping adjustment device according to an embodiment of the present invention includes: the device comprises a swing arm inner bushing, a built-in bushing and a driving piece, wherein an inner bushing damping hole is formed in the swing arm inner bushing; the built-in bushing is rotatably arranged in the swing arm inner bushing, the built-in bushing and the swing arm inner bushing jointly define a first chamber and a second chamber, a built-in damping hole is formed in the built-in bushing, the first chamber is communicated with the second chamber when the inner bushing damping hole and the built-in damping hole are at least partially overlapped, and the first chamber is isolated from the second chamber when the inner bushing damping hole and the built-in damping hole are completely staggered; the driving piece is used for driving the swing arm inner bushing or the built-in bushing to move so as to change the overlapping area of the built-in damping hole and the inner bushing damping hole.
According to the damping adjusting device provided by the embodiment of the invention, the damping adjusting device is compact in structure, the height space can be saved when the damping adjusting device is applied to a suspension device, and the damping attenuation effect can be achieved when the first chamber and the second chamber are communicated.
According to some embodiments of the invention, the drive comprises: a first driving member for driving the swing arm inner bushing or the inner bushing to axially move to change an overlapping area of the inner bushing damping hole and the inner bushing damping hole in an axial direction of the inner bushing; and/or a second driving member for driving the swing arm inner bushing or the inner bushing to rotate to change an overlapping area of the inner bushing damping hole and the inner bushing damping hole in a circumferential direction of the inner bushing.
According to some embodiments of the present invention, the plurality of inner liner damping holes are distributed along the axial direction of the swing arm inner liner, and the built-in damping holes are in one-to-one correspondence with the inner liner damping holes.
According to some embodiments of the invention, the apertures of at least two of the inner liner damping holes are unequal.
According to some embodiments of the invention, valve plates are arranged at the damping holes of the inner bushing and the built-in damping holes, the valve plates open the corresponding damping holes when the medium pressure reaches a preset value, and close the corresponding damping holes when the medium pressure is lower than the preset value.
According to some embodiments of the invention, the inner bushing damping hole and the built-in damping hole are provided with electromagnetic valves, and the electromagnetic valves are used for adjusting the size of the opening of the corresponding damping hole.
According to some embodiments of the invention, the second driving member is a rotating electric machine, one of the rotatable bushing and the second driving member of the swing arm inner bushing and the built-in bushing is provided with an induction coil, the other is provided with an electromagnet, the induction coil and the electromagnet generate electricity when the bushing rotates relative to the second driving member, and the second driving member recovers the electricity.
According to some embodiments of the invention, the damping adjustment device further comprises a controller for issuing a movement command to the first drive member and/or for issuing a rotation command to the second drive member.
According to some embodiments of the invention, the swing arm inner liner includes an inner liner body and an inner liner stop wall, the inner liner stop wall being connected to an inner wall of the inner liner body, and the inner liner stop wall having an inner liner ball on which the inner liner damping Kong Kaishe is on;
the built-in lining comprises a built-in body and a built-in retaining wall, the built-in body is sleeved in the inner lining body and is matched with the inner lining body, the built-in retaining wall is connected with the inner wall of the built-in body, the built-in retaining wall is provided with a built-in ball, the built-in damping Kong Kaishe is arranged on the built-in ball in a nested manner and is hinged to the inner lining ball, a first cavity is formed on one side of the inner lining retaining wall and one side of the built-in retaining wall, and a second cavity is formed on the other side of the inner lining retaining wall and the other side of the built-in retaining wall.
According to some embodiments of the invention, the axial maximum displacement travel of the swing arm inner bushing or the built-in bushing is 20mm to 50mm, and the circumferential maximum rotation angle of the swing arm inner bushing or the built-in bushing is 20 ° to 45 °.
According to some embodiments of the invention, the inner liner damping holes comprise inner liner compression holes and inner liner return holes, the built-in damping holes comprise built-in compression holes and built-in return holes, the built-in compression holes are adapted to overlap or be staggered with the corresponding inner liner compression holes, and the built-in return holes are adapted to overlap or be staggered with the corresponding inner liner return holes.
The suspension device according to the second aspect of the embodiment of the invention comprises a swing arm front bushing and the damping adjustment device, wherein the swing arm inner bushing is installed in the swing arm front bushing.
According to the suspension device provided by the embodiment of the invention, the damping adjusting device is compact in structure, the height space can be saved, and the damping and attenuation effects can be achieved when the first chamber and the second chamber are communicated.
A vehicle according to an embodiment of a third aspect of the present invention includes the suspension device described above.
According to the vehicle, the suspension device comprises the damping adjusting device which is compact in structure and capable of saving the height space, and the damping and damping effects can be achieved when the first chamber and the second chamber are communicated.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic cross-sectional view of a damping adjustment device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the damper adjustment assembly with the inner liner in a first position;
FIG. 3 is a schematic view of the damper adjustment assembly with the inner liner in a second position;
FIG. 4 is a schematic cross-sectional view of the damper adjustment device with the inner liner damping hole and the built-in damping hole overlapping;
FIG. 5 is a schematic cross-sectional view of a damper adjustment device with the inner liner damping holes and the built-in damping holes staggered;
FIG. 6 is a side view of the second driver;
FIG. 7 is a control logic diagram of the first and second drivers;
FIG. 8 is a schematic view of a suspension apparatus according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a vehicle according to an embodiment of the invention.
Reference numerals:
the vehicle 1000, the suspension device 100, the damping adjustment device 10, the swing arm inner liner 1, the inner liner damping hole 11, the inner liner first compression hole 111, the inner liner first restoration hole 112, the inner liner second compression hole 113, the inner liner second restoration hole 114, the inner liner third compression hole 115, the inner liner third restoration hole 116, the inner liner body 12, the inner liner blocking wall 13, the inner liner ball 14, the inner liner 2, the inner damping hole 21, the inner first compression hole 211, the inner first restoration hole 212, the inner second compression hole 213, the inner second restoration hole 214, the inner third compression hole 215, the inner third restoration hole 216, the inner body 22, the inner blocking wall 23, the inner ball 24, the plug 25, the first chamber 3, the second chamber 4, the first driver 5, the first shaft 51, the second driver 6, the second shaft 61, the swing arm front liner 20, the cushion body 30, the spring 40, and the guide cylinder 50.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
A damping adjustment device 10, a suspension device 100 having the damping adjustment device 10, and a vehicle 1000 having the suspension device 100 according to an embodiment of the present invention are described in detail below with reference to fig. 1 to 9.
Referring to fig. 1 to 5, a damping adjustment device 10 according to an embodiment of the present invention may include a swing arm inner bushing 1, a built-in bushing 2, and a driving member.
The built-in bushing 2 is rotatably installed in the swing arm inner bushing 1, the structure is compact, the built-in bushing 2 and the swing arm inner bushing 1 jointly define a first chamber 3 and a second chamber 4, media are stored in the first chamber 3 and the second chamber 4, an inner bushing damping hole 11 is formed in the swing arm inner bushing 1, a built-in damping hole 21 is formed in the built-in bushing 2, when the inner bushing damping hole 11 and the built-in damping hole 21 are at least partially overlapped, the inner bushing damping hole 11 is communicated with the built-in damping hole 21, the first chamber 3 is communicated with the second chamber 4, and at the moment, the media in the first chamber 3 and the media in the second chamber 4 can be mutually circulated, so that the integral damping of the damping adjusting device 10 is adjusted. When the inner liner damper hole 11 and the inner damper hole 21 are completely staggered, the inner liner damper hole 11 and the inner damper hole 21 are not communicated, the first chamber 3 and the second chamber 4 are isolated, and at this time, the overall damping of the damping adjustment device 10 cannot be adjusted, as shown in fig. 5. In this way, the user can choose to set the overlapping condition of the inner liner damping hole 11 and the built-in damping hole 21 according to the actual requirement of whether damping needs to be adjusted.
The driving member is used for driving the swing arm inner bushing 1 or the built-in bushing 2 to move so as to change the overlapping area of the built-in damping hole 21 and the inner bushing damping hole 11. The drive member is operable to effect initial damping adjustment of the damping adjustment device 10. That is, before the damping adjustment device 10 participates in the damping adjustment operation, for example, when the damping adjustment device 10 is applied to the vehicle 1000 and the vehicle 1000 is started, the driving member may be operated so that the overlapping area of the built-in damping hole 21 and the inner liner damping hole 11 is adjusted to a desired size to obtain an initial damping value. For example, the overlapping area of the built-in damping hole 21 and the inner liner damping hole 11 may be adjusted to zero, may be adjusted to a maximum value, and may be adjusted to any size between zero and the maximum value to obtain different initial damping values.
In some embodiments, the driving member may include a first driving member 5, where the first driving member 5 is configured to drive the swing arm inner liner 1 or the inner liner 2 to axially move so as to change an overlapping area of the inner liner damping hole 11 and the inner liner damping hole 21 in an axial direction of the inner liner 2. In the embodiment shown in fig. 1 to 5, the first driving member 5 is used to drive the inner liner 2 to move axially to change the overlapping area of the inner liner damping hole 11 and the inner liner damping hole 21 in the axial direction of the inner liner 2. Fig. 2 shows the condition in which the built-in bush 2 is in the first position, and fig. 3 shows the condition in which the built-in bush 2 is in the second position, and in the first position, the first driver 5 drives the built-in bush 2 to move rightward in the axial direction and then to reach the second position. The overlapping area of the built-in damper hole 21 and the inner liner damper hole 11 in the second position is smaller than the overlapping area of the built-in damper hole 21 and the inner liner damper hole 11 in the first position, and the damping of the damping adjustment device 10 in the second position is larger than the damping of the damping adjustment device 10 in the first position.
In some embodiments not shown in the drawings, the first driving member 5 is used to drive the swing arm inner liner 1 to move axially to change the overlapping area of the built-in damping hole 21 and the inner liner damping hole 11 in the axial direction of the built-in liner 2.
The first drive element 5 is operable to effect an initial damping adjustment of the damping adjustment device 10. That is, before the damping adjustment device 10 participates in the damping adjustment operation, for example, when the damping adjustment device 10 is applied to the vehicle 1000 and the vehicle 1000 is started, the first driving member 5 may be operated so that the overlapping area of the built-in damping hole 21 and the inner liner damping hole 11 in the axial direction of the built-in liner 2 is adjusted to a desired size to obtain an initial damping value. For example, the overlapping area of the built-in damper hole 21 and the inner liner damper hole 11 in the axial direction of the built-in liner 2 may be adjusted to zero, or may be adjusted to a maximum value, or may be adjusted to any size between zero and the maximum value, to obtain different initial damper values.
Optionally, in some embodiments, the first driving member 5 is a linear motor, and the first shaft 51 of the first driving member 5 is connected to the inner liner 2, where the linear motor is used to drive the inner liner 2 to move to the right in the axial direction, and may also drive the inner liner 2 to move to the left in the axial direction, so as to change the overlapping area of the inner liner damping hole 21 and the inner liner damping hole 11 in the axial direction of the inner liner 2, so as to obtain different initial damping values.
Alternatively, in other embodiments, the first driving member 5 may include a rotating electric machine toothed bar transmission mechanism, specifically, a gear is disposed on the first shaft 51 of the first driving member 5, a rack is disposed on the inner liner 2, and when the first driving member 5 works, the driving gear rotates to drive the rack to move along the axial direction of the inner liner 2, and the inner liner 2 moves along with the rack synchronously along the axial direction, so as to change the overlapping area of the inner liner damping hole 11 and the inner liner damping hole 21 in the axial direction of the inner liner 2, thereby obtaining different initial damping values.
According to the damping adjustment device 10 of the embodiment of the present invention, the damping adjustment device 10 is compact in structure, can save a height space when applied to the suspension device 100, and can play a damping attenuation role when the first chamber 3 and the second chamber 4 are communicated.
In some embodiments of the present invention, the driving member may further include a second driving member 6, where the second driving member 6 is configured to drive the swing arm inner liner 1 or the inner liner 2 to rotate so as to change an overlapping area of the inner liner damping hole 21 and the inner liner damping hole 11 in a circumferential direction of the inner liner 2. In the embodiment shown in fig. 1 to 3, the second driving member 6 is used to drive the inner liner 2 to rotate so as to change the overlapping area of the inner liner damping hole 11 and the inner liner damping hole 21 in the circumferential direction of the inner liner 2. In the process of rotating the built-in bushing 2 along the circumferential direction, the overlapping area of the built-in damping hole 21 and the built-in bushing damping hole 11 in the circumferential direction of the built-in bushing 2 changes in real time, so that the second driving piece 6 can realize dynamic damping adjustment of the damping adjustment device 10 when working, and the damping force in the process of jumping up and jumping down of the suspension device 100 can be controlled when the damping adjustment device 10 is applied to the suspension device 100.
In some embodiments of the present invention, referring to fig. 2 to 3 and 6, the built-in bush 2 has a socket 25, the second driving member 6 has a second shaft 61, the socket 25 is connected to the second shaft 61, the movable range of the socket 25 with respect to the second shaft 61 in the first position is H1, and the movable range of the socket 25 with respect to the second shaft 61 in the second position is H2. In this way, the installation position of the second driving member 6 does not interfere with the axial movement of the built-in bushing 2, and meanwhile, the second shaft 61 of the second driving member 6 can drive the plug 25 of the built-in bushing 2 to synchronously rotate, so as to drive the built-in bushing 2 to synchronously rotate, thereby adjusting the dynamic damping of the damping adjusting device 10.
In some embodiments not shown in the drawings, the second driving member 6 is used to drive the swing arm inner liner 1 to rotate to change the overlapping area of the inner liner damping hole 11 and the inner liner damping hole 21 in the circumferential direction of the inner liner 2.
In some embodiments of the invention, the driving members comprise both a first driving member 5 and a second driving member 6, as shown with reference to fig. 1-3.
In some embodiments of the present invention, the plurality of inner liner damping holes 11 are provided, and the plurality of inner liner damping holes 11 are distributed along the axial direction of the swing arm inner liner 1, and the built-in damping holes 21 are in one-to-one correspondence with the inner liner damping holes 11. Therefore, the damping adjustment efficiency can be improved, and the time required for adjusting the damping is shortened. The built-in damper hole 21 and the inner liner damper hole 11 can be entirely overlapped at least in one state, and the built-in damper hole 21 and the inner liner damper hole 11 can be entirely offset at least in another state. Alternatively, the number of the built-in damping holes 21 is equal to that of the corresponding inner liner damping holes 11, and the shapes are the same. The installation position of the built-in damping hole 21 on the built-in bush 2 corresponds to the installation position of the inner bush damping hole 11 on the swing arm inner bush 1.
In some embodiments of the present invention, the apertures of at least two inner liner damping holes 11 are not equal. When the damping adjustment device 10 is applied to the vehicle 1000, damping holes with different apertures can be selected to participate in damping adjustment under different vehicle speed working conditions, for example, a large-aperture damping hole is adopted under a high-speed working condition, and a small-aperture damping hole is adopted under a low-speed working condition.
In some embodiments of the present invention, valve plates are disposed at the inner liner damping hole 11 and the built-in damping hole 21, and the valve plates open the corresponding damping holes when the medium pressure reaches a preset value and close the corresponding damping holes when the medium pressure is lower than the preset value. The preset values corresponding to the valve plates can be different, so that when the medium pressure is lower than the preset value, the damping holes corresponding to the valve plates are closed, so that the damping holes do not participate in damping adjustment work, and therefore, the number of the damping holes participating in damping adjustment under different medium pressures can be determined by reasonably setting the preset values of the valve plates at the damping holes, so that the damping adjustment device 10 is richer in function.
In some embodiments of the present invention, solenoid valves are provided at the inner bushing damping hole 11 and the built-in damping hole 21, and the solenoid valves are used to adjust the opening sizes of the corresponding damping holes. By adjusting the operating state of the solenoid valve, dynamic damping adjustment of the damping adjustment device 10 can be achieved. The second drive element 6 may not be provided anymore, but the second drive element 6 may, of course, also be left.
In some embodiments of the invention, the second driving member 6 is a rotating electric machine, one of the rotatable bushing and the second driving member 6 of the swing arm inner bushing 1 and the built-in bushing 2 is provided with an induction coil, the other is provided with an electromagnet, and when the bushing rotates relative to the second driving member 6, the induction coil and the electromagnet generate electricity, and the second driving member 6 recovers the electricity.
For example, in the embodiment shown in fig. 1 to 3, the built-in bush 2 is a bush which is driven by the second driving member 6 and is rotatable, one of the built-in bush 2 and the second driving member 6 is provided with an induction coil, the other of the built-in bush 2 and the second driving member 6 is provided with an electromagnet, and when the built-in bush 2 rotates relative to the second driving member 6, the induction coil and the electromagnet generate electric power, and the second driving member 6 recovers the electric power. That is, the second driving member 6 may be used as a driving member for driving the built-in bush 2 to rotate, or may be used as an energy recovering member for collecting the kinetic energy of the built-in bush 2, and the recovered energy may be used as a driving force for driving the built-in bush 2 to rotate next time, so that energy consumption can be saved.
In some embodiments not shown in the figures, the swing-arm inner bushing 1 is a bushing that is driven by the second driving member 6 and is rotatable, one of the swing-arm inner bushing 1 and the second driving member 6 is provided with an induction coil, the other of the swing-arm inner bushing 1 and the second driving member 6 is provided with an electromagnet, and when the swing-arm inner bushing 1 rotates relative to the second driving member 6, the induction coil and the electromagnet generate electric power, and the second driving member 6 recovers the electric power. That is, the second driving member 6 may be used as a driving member for driving the built-in bush 2 to rotate, or may be used as an energy recovering member for collecting the movement energy of the swing arm inner bush 1, and the recovered energy may be used as a driving force for driving the swing arm inner bush 1 to rotate next time, so that energy consumption can be saved.
In some embodiments of the present invention, the damping adjustment device 10 may further comprise a controller for issuing movement instructions to the first driving member 5 and/or a controller for issuing rotation instructions to the second driving member 6. Referring to fig. 7, after the controller sends a movement command to the first driving member 5, the built-in bushing 2 moves along the axial direction, so that initial damping adjustment can be realized, the position sensor detects the axial position of the built-in bushing 2 in real time, and a speed signal of the built-in bushing 2 and a position signal detected by the position sensor are fed back to the first driving member 5 to further guide the operation of the first driving member 5. After the controller sends a rotation instruction to the second driving piece 6, the built-in bushing 2 rotates along the circumferential direction, dynamic damping adjustment can be achieved, the angle sensor detects the circumferential angle position of the built-in bushing 2 in real time, and a speed signal of the built-in bushing 2 and an angle signal detected by the angle sensor are fed back to the second driving piece 6 to further guide the second driving piece 6 to work.
In some embodiments of the present invention, referring to fig. 4 to 5, the swing arm inner liner 1 includes an inner liner body 12 and an inner liner stop wall 13, the inner liner stop wall 13 is connected to an inner wall of the inner liner body 12, and the inner liner stop wall 13 has an inner liner ball 14, and the inner liner damping hole 11 is opened on the inner liner ball 14.
The inner liner 2 comprises an inner liner body 22 and an inner baffle wall 23, the inner liner body 22 is sleeved in the inner liner body 12, the inner liner body 22 is matched with the inner liner body 12, the inner baffle wall 23 is connected with the inner wall of the inner liner body 22, the inner baffle wall 23 is provided with an inner ball 24, the inner damping hole 21 is formed in the inner ball 24, the inner ball 24 is nested with the inner liner ball 14 and is hinged with the inner liner ball 14, as shown in fig. 4-5, the inner liner ball 14 is of a hollow spherical structure, the inner ball 24 is sleeved in the inner liner ball 14, a first chamber 3 is formed on one side of the inner liner baffle wall 13 and the inner baffle wall 23, and a second chamber 4 is formed on the other side of the inner liner baffle wall 13 and the inner baffle wall 23.
Referring to fig. 4, the built-in body 22 may be constructed in an arc-shaped structure having a notch such that one circumferential end 26 of the arc-shaped structure serves to limit a first rotational limit position of the built-in bush 2 and the other circumferential end 27 of the arc-shaped structure serves to limit a second rotational limit position of the built-in bush 2.
In some embodiments of the present invention, the axial maximum displacement travel of the swing arm inner liner 1 or the built-in liner 2 is 20mm to 50mm, and the circumferential maximum rotation angle of the swing arm inner liner 1 or the built-in liner 2 is 20 ° to 45 °. Taking the first driving member 5 driving the inner liner 2 to axially move and the second driving member 6 driving the inner liner 2 to rotate as an example, the axial displacement stroke of the inner liner 2 may be any value between 0mm and the axial maximum displacement stroke, for example, when the axial maximum displacement stroke of the inner liner 2 is 45mm, the axial displacement stroke of the inner liner 2 may be any value between 0mm and 45mm, for example, 10mm, 20mm, 30mm, 40mm, 45mm, etc. Similarly, the circumferential rotation angle of the built-in liner 2 may be any value between 0 ° and the circumferential maximum rotation angle, for example, when the circumferential maximum rotation angle of the built-in liner 2 is 40 °, the circumferential rotation angle of the built-in liner 2 may be any value between 0 ° and 40 °, for example, 25 °, 30 °, 35 °, 40 °, and the like. For the embodiment in which the first driving member 5 drives the swing arm inner liner 1 to axially move and the second driving member 6 drives the swing arm inner liner 1 to rotate, the definition of the axial maximum displacement stroke and the circumferential maximum rotation angle of the swing arm inner liner 1 is the same as the above, and will not be repeated here.
In some embodiments of the present invention, the inner liner damping holes 11 include inner liner compression holes and inner liner return holes, and the inner damping holes 21 include inner compression holes adapted to overlap or misalign with the corresponding inner liner compression holes and inner return holes adapted to overlap or misalign with the corresponding inner liner return holes. Optionally, the medium in the first chamber 3 enters the second chamber 4 through a compression hole, and the medium in the second chamber 4 returns Kong Huidao to the first chamber 3.
In some embodiments, referring to fig. 1-3, the liner compression holes include an inner liner first compression hole 111, an inner liner second compression hole 113, an inner liner third compression hole 115, and the inner liner recovery holes include an inner liner first recovery hole 112, an inner liner second recovery hole 114, an inner liner third recovery hole 116, and the inner liner first compression hole 111, the inner liner first recovery hole 112, the inner liner second compression hole 113, the inner liner second recovery hole 114, the inner liner third compression hole 115, and the inner liner third recovery hole 116 are disposed in order in the axial direction of the swing arm inner liner 1. The built-in compression holes include a built-in first compression hole 211, a built-in second compression hole 213, and a built-in third compression hole 215, and the built-in restoration holes include a built-in first restoration hole 212, a built-in second restoration hole 214, and a built-in third restoration hole 216, which are provided in this order in the axial direction of the built-in liner 2, the built-in first compression hole 211, the built-in first restoration hole 212, the built-in second compression hole 213, the built-in second restoration hole 214, the built-in third compression hole 215, and the built-in third restoration hole 216. Wherein, the first compression hole 111 of the inner liner corresponds to the first compression hole 211 of the inner liner, the second compression hole 113 of the inner liner corresponds to the second compression hole 213 of the inner liner, the third compression hole 115 of the inner liner corresponds to the third compression hole 215 of the inner liner, the first restoration hole 112 of the inner liner corresponds to the first restoration hole 212 of the inner liner, the second restoration hole 114 of the inner liner corresponds to the second restoration hole 214 of the inner liner, and the third restoration hole 116 of the inner liner corresponds to the third restoration hole 216 of the inner liner.
At least in one state, the inner liner first compression hole 111 overlaps the built-in first compression hole 211, the inner liner second compression hole 113 overlaps the built-in second compression hole 213, the inner liner third compression hole 115 overlaps the built-in third compression hole 215, the inner liner first restoration hole 112 overlaps the built-in first restoration hole 212, the inner liner second restoration hole 114 overlaps the built-in second restoration hole 214, and the inner liner third restoration hole 116 overlaps the built-in third restoration hole 216. At least in the other state, the inner liner first compression hole 111 is completely displaced from the inner first compression hole 211, the inner liner second compression hole 113 is completely displaced from the inner second compression hole 213, the inner liner third compression hole 115 is completely displaced from the inner third compression hole 215, the inner liner first restoration hole 112 is completely displaced from the inner first restoration hole 212, the inner liner second restoration hole 114 is completely displaced from the inner second restoration hole 214, and the inner liner third restoration hole 116 is completely displaced from the inner third restoration hole 216.
Alternatively, the bore diameters of the inner liner first compression hole 111, the inner liner second compression hole 113, and the inner liner third compression hole 115 are different, and the bore diameters of the inner liner first recovery hole 112, the inner liner second recovery hole 114, and the inner liner third recovery hole 116 are different. The first compression hole 111 corresponds to the first compression hole 211 and has the same diameter, the second compression hole 113 corresponds to the second compression hole 213 and has the same diameter, the third compression hole 115 corresponds to the third compression hole 215 and has the same diameter, the first restoration hole 112 corresponds to the first restoration hole 212 and has the same diameter, the second restoration hole 114 corresponds to the second restoration hole 214 and has the same diameter, and the third restoration hole 116 corresponds to the third restoration hole 216 and has the same diameter. The initial damping hole size adjustment can be achieved by pushing the built-in bush 2 to move axially by the first driving member 5, for example, the inner bush first compression hole 111 and the inner bush first restoration hole 112, the inner bush second compression hole 113 and the inner bush second restoration hole 114, the inner bush third compression hole 115 and the inner bush third restoration hole 116 control the swing arm rotation damping at a high speed of 0.7m/s to 1.0m/s, a medium speed of 0.5m/s to 0.7m/s, and a low speed of 0.1m/s to 0.4m/s, respectively.
Through setting up compression hole and the hole that restores that multiunit aperture is different, carry out accurate initial control to bush medium flow rate and damping to realize the control to the swing motion.
In some embodiments, at least one of the inner liner first compression hole 111 and the inner first compression hole 211 is provided with a first compression valve, at least one of the inner liner second compression hole 113 and the inner second compression hole 213 is provided with a second compression valve, at least one of the inner liner third compression hole 115 and the inner third compression hole 215 is provided with a third compression valve, at least one of the inner liner first return hole 112 and the inner first return hole 212 is provided with a first return valve, at least one of the inner liner second return hole 114 and the inner second return hole 214 is provided with a second return valve, and at least one of the inner liner third return hole 116 and the inner third return hole 216 is provided with a third return valve. The compression valve and the recovery valve can be valve plates or electromagnetic valves.
Alternatively, the medium in the first chamber 3 and the second chamber 4 may be a liquid, a gas, or a mixture of gas and liquid.
Referring to fig. 8, a suspension device 100 according to a second aspect of the present invention may include a swing arm front bushing 20, and a damping adjustment device 10 of the above-described embodiment, the swing arm inner bushing 1 being installed in the swing arm front bushing 20, the damping adjustment device 10 may be used to adjust a swing damping force of the swing arm front bushing 20.
Alternatively, the suspension apparatus 100 may be a macpherson suspension apparatus.
In some embodiments of the present invention, referring to fig. 8, the suspension device 100 further includes a lower swing arm, a damper 30, a spring 40, and a guide cylinder 50, the swing arm inner bushing 1 is provided to the lower swing arm, and the damper 30 and the spring 40 are provided to the guide cylinder 50. The damping adjustment device 10 may be used to adjust the swing damping force of the swing arm front bushing 20 and thus the swing damping force of the lower swing arm. The buffer body 30 moves downwards from the upper end to the lower end of the traditional damper, the buffer body 30 and the tray support against each other to limit, the top end space of 80mm-120mm is reduced, and the requirements of low-lying modeling of the whole vehicle, wind resistance of the vehicle, lower view lines, pedestrian protection and the like are met. The guide cylinder 50 is provided with a traditional damper, so that the piston rod structure of the damper is reduced, the unsprung weight is reduced, and the comfort of passing through a deceleration strip is facilitated; meanwhile, in the macpherson suspension device, the tire width is selected independently of the diameter of the damper cylinder. In addition, the center offset of the Macpherson suspension device can be reduced, the problem of accelerating a strong steering wheel is solved, and the steering performance is improved.
The damping adjusting device 10 included in the suspension device 100 can realize compact design of the suspension, and the suspension is dynamically controlled to operate and control, so that the response is more sensitive, and the whole vehicle controllability and safety are better; compared with the active damper on the market, the active damper has low cost, simple structure and more competitive power.
In general, when the swing arm front bushing 20 swings upward or downward, the damping Kong Faji opening of the swing arm front bushing 20 becomes smaller and the damping increases; when the vehicle enters a control mode, an intelligent sensing system (laser radar, millimeter wave radar or camera head is identified through AI chip characteristics) is combined, an inspection well cover or an ascending and descending slope and the like are pre-judged in advance, pre-set rotation pre-judgment is performed, and then the jumping frequency is monitored and transmitted according to an angle sensor, so that the rolling support is realized; when the vehicle enters a comfortable mode, the intelligent sensing system (according to the angle sensor, the road surface excitation is monitored and the beating frequency is transmitted) is combined, the preset rotation pre-judgment is performed, the small damping driving on the straight road surface is realized, and the riding comfort of the driving is highlighted.
According to the suspension device 100 of the embodiment of the invention, the damping adjustment device 10 is compact in structure, the height space can be saved, and the damping and attenuation effects can be achieved when the first chamber 3 and the second chamber 4 are communicated. By adjusting the initial damping and the dynamic damping of the damping adjustment device 10, the purpose of adjusting the initial damping and the dynamic damping of the suspension device 100 can be achieved.
Referring to fig. 9, a vehicle 1000 according to an embodiment of the third aspect of the invention includes the suspension apparatus 100 of the above-described embodiment.
According to the vehicle 1000 of the embodiment of the invention, the suspension device 100 includes the damping adjustment device 10 which is compact in structure, can save height space, and can play a damping role when the first chamber 3 and the second chamber 4 are communicated. By adjusting the initial damping and the dynamic damping of the damping adjustment device 10, the purpose of adjusting the initial damping and the dynamic damping of the vehicle suspension device 100 can be achieved.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (13)
1. A damping adjustment device, comprising:
the swing arm inner bushing (1), wherein an inner bushing damping hole (11) is formed in the swing arm inner bushing (1);
the built-in bushing (2) is rotatably arranged in the swing arm inner bushing (1), the built-in bushing (2) and the swing arm inner bushing (1) jointly define a first chamber (3) and a second chamber (4), a built-in damping hole (21) is formed in the built-in bushing (2), when the inner bushing damping hole (11) and the built-in damping hole (21) are at least partially overlapped, the first chamber (3) is communicated with the second chamber (4), and when the inner bushing damping hole (11) and the built-in damping hole (21) are completely staggered, the first chamber (3) is isolated from the second chamber (4);
the driving piece is used for driving the swing arm inner bushing (1) or the built-in bushing (2) to move so as to change the overlapping area of the built-in damping hole (21) and the inner bushing damping hole (11).
2. The damping adjustment device according to claim 1, wherein the driving member comprises:
a first driving member (5), wherein the first driving member (5) is used for driving the swing arm inner bushing (1) or the built-in bushing (2) to axially move so as to change the overlapping area of the built-in damping hole (21) and the inner bushing damping hole (11) in the axial direction of the built-in bushing (2); and/or the number of the groups of groups,
and the second driving piece (6) is used for driving the swing arm inner bushing (1) or the built-in bushing (2) to rotate so as to change the overlapping area of the built-in damping hole (21) and the inner bushing damping hole (11) in the circumferential direction of the built-in bushing (2).
3. Damping adjustment device according to claim 1, characterized in that the number of the inner liner damping holes (11) is plural, the plural inner liner damping holes (11) are distributed along the axial direction of the swing arm inner liner (1), and the built-in damping holes (21) are in one-to-one correspondence with the inner liner damping holes (11).
4. A damping adjustment device according to claim 3, characterized in that the apertures of at least two of the inner bushing damping holes (11) are unequal.
5. Damping adjustment device according to claim 1, characterized in that the inner bushing damping holes (11) and the built-in damping holes (21) are provided with valve plates which open the corresponding damping holes when the medium pressure reaches a preset value and close the corresponding damping holes when the medium pressure is below the preset value.
6. Damping adjustment device according to claim 1, characterized in that the inner bushing damping holes (11) and the built-in damping holes (21) are provided with solenoid valves for adjusting the opening sizes of the corresponding damping holes.
7. Damping adjustment device according to claim 2, characterized in that the second drive member (6) is a rotating electrical machine, one of the rotatable bushing of the swing arm inner bushing (1) and the built-in bushing (2) and the second drive member (6) is provided with an induction coil, the other is provided with an electromagnet, the induction coil and the electromagnet generate electrical energy when the bushing rotates relative to the second drive member (6), and the second drive member (6) recovers electrical energy.
8. Damping adjustment device according to claim 2, characterized in that it further comprises a controller for issuing movement instructions to the first drive member (5) and/or for issuing rotation instructions to the second drive member (6).
9. Damping adjustment device according to claim 1, characterized in that the swing arm inner bushing (1) comprises an inner bushing body (12) and an inner bushing wall (13), the inner bushing wall (13) being connected to the inner wall of the inner bushing body (12), and the inner bushing wall (13) having an inner bushing ball (14), the inner bushing damping hole (11) being open on the inner bushing ball (14);
the built-in bushing (2) comprises a built-in body (22) and a built-in retaining wall (23), the built-in body (22) is sleeved in the built-in bushing body (12) and matched with the built-in bushing body (12), the built-in retaining wall (23) is connected with the inner wall of the built-in body (22), the built-in retaining wall (23) is provided with a built-in ball (24), the built-in damping hole (21) is formed in the built-in ball (24), the built-in ball (24) is nested with the built-in bushing ball (14) and is hinged to the built-in ball, the first chamber (3) is formed on one side of the built-in retaining wall (13) and one side of the built-in retaining wall (23), and the second chamber (4) is formed on the other side of the built-in retaining wall (23).
10. Damping adjustment device according to claim 1, characterized in that the axial maximum displacement travel of the swing-arm inner bushing (1) or the built-in bushing (2) is 20-50 mm, and the circumferential maximum rotation angle of the swing-arm inner bushing (1) or the built-in bushing (2) is 20-45 °.
11. Damping adjustment device according to any one of claims 1-10, wherein the inner liner damping hole (11) comprises an inner liner compression hole and an inner liner return hole, the inner liner damping hole (21) comprising an inner compression hole adapted to overlap or be staggered with the corresponding inner liner compression hole and an inner return hole adapted to overlap or be staggered with the corresponding inner liner return hole.
12. Suspension device, characterized by comprising a swing arm front bushing (20) and a damping adjustment device according to any of claims 1-11, said swing arm inner bushing (1) being mounted in said swing arm front bushing (20).
13. A vehicle comprising the suspension device according to claim 12.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310485399.6A CN117656730B (en) | 2023-04-28 | 2023-04-28 | Damping adjustment device, suspension device, and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310485399.6A CN117656730B (en) | 2023-04-28 | 2023-04-28 | Damping adjustment device, suspension device, and vehicle |
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| CN117656730A true CN117656730A (en) | 2024-03-08 |
| CN117656730B CN117656730B (en) | 2024-10-11 |
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| US20090035149A1 (en) * | 2007-08-03 | 2009-02-05 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Fan rotor |
| CN104235064A (en) * | 2013-06-07 | 2014-12-24 | 台达电子工业股份有限公司 | Fan and impeller thereof |
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| CN114537072A (en) * | 2021-10-15 | 2022-05-27 | 山东美晨工业集团有限公司 | Hydro-pneumatic interconnected suspension with self-adaptive damping and adjustable roll stiffness |
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| JPH06135329A (en) * | 1992-10-26 | 1994-05-17 | Bridgestone Corp | Vibrationproof rubber bush for yaw damper used for railroad vehicle |
| TW200624676A (en) * | 2004-12-29 | 2006-07-16 | Jin-Yan Shi | Manufacturing method and structure for the DC fan blade |
| JP2006322325A (en) * | 2005-05-17 | 2006-11-30 | Japan Servo Co Ltd | Motor fan and method of correcting balance of the motor fan |
| KR20070043364A (en) * | 2005-10-21 | 2007-04-25 | 현대모비스 주식회사 | Variable adjusting damping typed suspension bush assembly |
| US20090035149A1 (en) * | 2007-08-03 | 2009-02-05 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Fan rotor |
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| CN117656730B (en) | 2024-10-11 |
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