CN114562536A - Semi-active suspension - Google Patents
Semi-active suspension Download PDFInfo
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- CN114562536A CN114562536A CN202210078752.4A CN202210078752A CN114562536A CN 114562536 A CN114562536 A CN 114562536A CN 202210078752 A CN202210078752 A CN 202210078752A CN 114562536 A CN114562536 A CN 114562536A
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- inertia
- liquid chamber
- flow
- inertia channel
- semi
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- 239000000725 suspension Substances 0.000 title claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 108
- 238000009434 installation Methods 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000035515 penetration Effects 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 61
- 238000007789 sealing Methods 0.000 claims description 36
- 238000004891 communication Methods 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 10
- 230000005284 excitation Effects 0.000 abstract description 7
- 210000002469 basement membrane Anatomy 0.000 description 8
- 125000004122 cyclic group Chemical group 0.000 description 6
- 210000004379 membrane Anatomy 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1208—Resilient supports
-
- 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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
- F16F13/105—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like characterised by features of partitions between two working chambers
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
- F16F13/105—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like characterised by features of partitions between two working chambers
- F16F13/107—Passage design between working chambers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
The invention discloses a semi-active suspension, which comprises a housing, a base, a rubber main spring and a bottom film, wherein the housing is arranged on the base to form an installation cavity; is characterized in that an inertia channel assembly is arranged in the closed cavity, and the inertia channel assembly divides the closed cavity into an upper liquid chamber and a lower liquid chamber; the inertia channel assembly comprises an inertia channel plate, two penetration channels are concavely arranged on the inertia channel plate, a lower liquid chamber communicating port communicated with a lower liquid chamber is arranged on each inertia channel, an inertia channel cover plate is covered on the inertia channel plate, and two upper liquid chamber communicating ports which are communicated up and down are arranged on the inertia channel cover plate; one of the inertia channels is internally provided with a mechanical current-limiting switching mechanism. The mechanical current-limiting switching mechanism has the advantages that the switching between the single inertia channel mode and the double inertia channel mode under different excitation working conditions is realized through the mechanical current-limiting switching mechanism, the structure is simple, and the cost is low.
Description
Technical Field
The invention relates to the field of automobile parts, in particular to a semi-active suspension.
Background
With the improvement of living standard, people have higher and higher requirements on the riding comfort of automobiles. NVH (Noise, Vibration, Harshness, Noise, Vibration and Harshness) is an important index for measuring the riding comfort of automobiles. During the running process of the automobile, the main sources of vibration are vibration generated when the power assembly works and vibration caused by road excitation. The power assembly suspension element is an important part of a power assembly vibration reduction system, and the power assembly suspension element with good performance can reduce the vibration transmitted from the power assembly to the frame, improve the riding comfort and better protect the power assembly.
Currently, common powertrain suspension elements mainly include rubber suspensions, hydraulic suspensions, semi-active suspensions and active suspensions. Common semi-active suspension is mostly electromagnetic type semi-active suspension, mainly adjusts its performance through electromagnetic actuator to satisfy the vibration isolation demand under the multiplex condition, but electromagnetic type semi-active suspension is comparatively complicated in general structure, and is high to the assembly precision requirement between each spare part, and the cost is also higher.
Disclosure of Invention
The invention aims to solve the technical problem of providing a semi-active suspension which is simple in structure, low in assembly precision requirement on each part and low in cost.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a semi-active suspension comprises a cover, a base, a main rubber spring and a bottom film, wherein the cover is arranged on the base to form an installation cavity; an inertia channel assembly is arranged in the closed cavity and divides the closed cavity into an upper liquid chamber and a lower liquid chamber which are independent; the inertia channel assembly comprises an inertia channel plate, two non-communicated penetration channels are concavely arranged on the inertia channel plate, a lower liquid chamber communicating port used for being communicated with the lower liquid chamber is arranged on each inertia channel, an inertia channel cover plate used for sealing the upper parts of the two inertia channels is covered on the inertia channel plate, two upper liquid chamber communicating ports which are communicated up and down are arranged on the inertia channel cover plate, and one upper liquid chamber communicating port is correspondingly arranged on each inertia channel to realize the communication between the inertia channel and the upper liquid chamber; and a mechanical current-limiting switching mechanism is arranged in one of the inertia channels and is used for switching the semi-active suspension to work in a single inertia channel mode and a double inertia channel mode.
The two inertia channels are respectively a first inertia channel and a second inertia channel, the first inertia channel is internally provided with the mechanical current-limiting switching mechanism, the first inertia channel is of a C-shaped structure and comprises two first flow through grooves which are horizontally arranged, the two first flow through grooves are arranged in parallel at intervals in the front-back direction, the outer ends of the two first flow through grooves are communicated through a straight strip-shaped first connecting groove, one first flow through groove is internally provided with a lower liquid chamber communicating port which is vertically communicated with the lower liquid chamber, and the other first flow through groove is correspondingly provided with an upper liquid chamber communicating port. The first inertia channel is simple in structure, the space of the inertia channel plate is maximally utilized within a reasonable range, and the straight strip-shaped first connecting groove facilitates assembly and stable use of the mechanical current-limiting switching mechanism.
The mechanical flow-limiting switching mechanism comprises a flow-limiting block and two partition plates with through holes which are communicated from front to back, the two partition plates are fixedly arranged in the first connecting groove at intervals from front to back, the flow-limiting block can be movably arranged between the two partition plates from front to back, the two partition plates divide the first inertial channel into a lower liquid chamber communicating part which is mutually independent and used for being communicated with a lower liquid chamber, a switching part which is used for installing the flow-limiting block to realize flow-limiting switching and an upper liquid chamber communicating part which is used for being communicated with an upper liquid chamber, the lower liquid chamber communicating part is provided with a lower liquid chamber communicating opening, the upper liquid chamber communicating part corresponds to the upper liquid chamber communicating opening, and a gap for liquid to pass through is arranged between the outer wall of the flow-limiting block and the inner wall of the switching part; the rear end surface of the current limiting block is matched with the front end surface of the partition board positioned behind, and when the rear end surface of the current limiting block is attached to the front end surface of the partition board positioned behind, the current limiting block is used for blocking the through hole in the partition board positioned behind; the preceding terminal surface of current-limiting block with be located the place ahead the rear end face of baffle cooperate, work as the preceding terminal surface of current-limiting block with be located the place ahead the rear end face of baffle during laminating, realize the current-limiting block will be located the place ahead the baffle on the via hole plug up. The mechanical current-limiting switching mechanism is simple in structure and low in cost, the partition plates are arranged in the first connecting groove, so that liquid passing through the first circulating groove can only pass through the through holes in the partition plates and the gaps between the current-limiting blocks and the inner wall of the first connecting groove, when the semi-active suspension is excited by large amplitude, the current-limiting blocks move greatly along with the liquid, the current-limiting blocks can be in contact with the two partition plates and can plug the through holes in the corresponding partition plates, at the moment, the liquid cannot pass through the first inertia channel and only can pass through the second inertia channel, so that the semi-active suspension works in a state of a single inertia channel, the dynamic characteristics of large rigidity and large damping in a frequency range of 9-12 Hz are provided, and the vibration of a power assembly under the action of road surface excitation is reduced; when the semi-active suspension is excited by small amplitude, the flow limiting block in the first inertia channel can move freely and is not in contact with the two clapboards, at the moment, liquid can pass through the first inertia channel and the second inertia channel, so that the semi-active suspension works in a double-inertia channel state, dynamic stiffness smaller than static stiffness can be provided in a frequency range of 25-30 Hz, and vibration isolation of an engine in an idling state is facilitated.
The first connecting groove is connected with the first circulation groove through a first arc-shaped transition groove. Through the first arc-shaped transition groove, abnormal sound generated when liquid flows in the first inertia channel can be effectively avoided, and therefore the NVH performance of the whole vehicle is affected.
The partition plate and the flow limiting block are both rectangular structures, the through hole is formed in the center of the partition plate, the longitudinal sectional area of the flow limiting block is larger than the inner diameter of the through hole, the inner diameter of the through hole is smaller than the longitudinal sectional area of the first connecting groove, the height and the width of the flow limiting block are smaller than those of the first connecting groove, and the length of the flow limiting block in the front-back direction is smaller than that of the switching portion in the front-back direction. The partition plate and the flow limiting block are simple in structure, convenient to manufacture and low in cost, and the matching design of all sizes is favorable for switching the whole semi-active suspension between two different working modes of a single inertia channel and a double inertia channel.
The side installation slots are respectively arranged on two side walls of the first connecting groove in a sunken mode and used for installing two side portions of the partition board, the lower portion of the first connecting groove is downwards sunken and provided with lower positioning slots matched with the lower portion of the partition board, the side installation slots are opposite to each other and connected through one lower positioning slot, the two side portions of the partition board are respectively inserted into the corresponding side installation slots, the lower portion of the partition board is inserted into the lower positioning slots, and the partition board is fixedly installed in the first connecting groove. The stable fixed mounting of baffle in first connecting groove is realized, ensures simultaneously that the assembly is accomplished the back, and the via hole that liquid can only listen on the baffle passes through, ensures the stable switching of mechanical type current-limiting switching mechanism to two different operating modes of single inertia passageway and two inertia passageways.
And four outer side walls of the current limiting block are respectively provided with arc-shaped depressions which are communicated from front to back. The double-inertia-channel liquid circulation device is beneficial to the fact that in the working mode of the double-inertia-channel liquid can smoothly flow from one first flowing through groove to the other first flowing through groove through the through holes in the flow limiting blocks and the partition plates.
The second inertia channel is in a mirror symmetry with the first inertia channel and comprises two horizontally arranged second flow through grooves, the two second flow through grooves are arranged in parallel at intervals in the front-back direction, the outer end heads of the two second flow through grooves are communicated through straight strip-shaped second connection grooves, one of the second flow through grooves is internally provided with a lower liquid chamber communication port which is communicated with the lower liquid chamber and is vertically communicated with the lower liquid chamber, and the other second flow through groove is correspondingly provided with an upper liquid chamber communication port; the second connecting groove is connected with the second circulating groove through a second arc-shaped transition groove. The space of the inertia channel plate is reasonably utilized, and abnormal sound generated when liquid flows in the second inertia channel can be effectively avoided through the second arc-shaped transition groove, so that the NVH performance of the whole vehicle is influenced.
In the first inertia channel, the upper liquid chamber communication port is positioned at the inner end position of one first flow through groove, and the lower liquid chamber communication port is positioned at the inner end position of the other first flow through groove; in the second inertia channel, the upper liquid chamber communication port is positioned at the inner end position of one of the second flow through grooves, and the lower liquid chamber communication port is positioned at the inner end position of the other second flow through groove. The flow paths of the two inertia channels are fully utilized, and the whole semi-active suspension has better performance.
The inertia channel plate is provided with positioning columns in a protruding mode, the inertia channel cover plate is provided with positioning holes matched with the positioning columns, the lower end face of the inertia channel cover plate is tightly attached to the upper end face of the inertia channel plate provided with the inertia channels, and the positioning columns are embedded into the corresponding positioning holes. The stable installation of inertia passageway apron on inertia passageway board is realized through the cooperation of reference column and locating hole.
The two positioning holes are arranged on two opposite angles of the inertia channel cover plate, the inner diameters of the two positioning holes are not equal, and one positioning hole is matched with one positioning column matched with the positioning hole. A more stable mounting of the inertia track cover plate on the inertia track plate is ensured.
The inertia passageway board on the protruding mistake proofing location portion that is provided with, inertia passageway apron on correspond the mistake proofing location portion on be provided with mistake proofing installation breach. Through the cooperation between mistake proofing installation breach and the mistake proofing location portion, realize the quick location installation of inertia passageway apron on inertia passageway board, improve assembly efficiency to make production efficiency obtain improving.
The inertia passageway board on have cyclic annular sealed draw-in groove, two the inertia passageway setting be in cyclic annular sealed draw-in groove in, the lower part of rubber owner spring be provided with cyclic annular sealed snap ring of cyclic annular sealed draw-in groove matched with, the lower part of rubber owner spring sticis the setting and is in inertia passageway apron on, cyclic annular sealed snap ring closely inlay and establish cyclic annular sealed draw-in groove in realize circumferential sealing. The upper liquid chamber is sealed through the matching of the annular sealing snap ring and the annular sealing clamping groove, the lower part of the rubber main spring is tightly pressed and arranged on the inertia channel cover plate, and the inertia channel cover plate is stably installed on the inertia channel plate.
Rubber main spring the support chassis has, the support chassis be in including setting up rubber main spring inside be used for realizing main supporting portion that supports and set up and be in rubber main spring outside installation department, the installation department on be provided with mounting groove, the base on be provided with the location and collude, the location collude and have and be used for colluding and establish mounting groove in collude and establish the portion, collude and establish the portion and collude and establish mounting groove in realize rubber main spring the base on fixed mounting. The fixed mounting structure for realizing the rubber main spring on the base is simple and convenient to assemble.
The rubber main spring is provided with a support arm installation cavity for installing a support arm, and the support arm installation cavity is internally provided with a support arm for being connected with a vehicle body.
The base on be provided with the installing port that link up from top to bottom, the basement membrane include the basement membrane main part and encircle the setting and be in the outside holding ring of basement membrane main part, the holding ring shelve the base on, the basement membrane main part be located the installing port in, the base on the undercut be provided with annular sealed sunken, sealed sunken encircle the setting and be in the outside of installing port, the lower extreme mask of holding ring have downward bulge with sealed sunken matched with sealing ring, inertia passageway board press and establish the up end of holding ring on, the sealing ring inlay and establish sealed sunken in realize circumference sealed. Above-mentioned structure realizes the stable installation of basement membrane on the base, and sealing ring and sealed sunken cooperation not only realize the sealed of lower liquid room, have further realized the more stable location installation of basement membrane on the base simultaneously.
The sealing depressions are arranged coaxially and at intervals, and the number of the sealing rings is matched with that of the sealing depressions. Further ensuring the sealing property.
Compared with the prior art, the invention has the advantages that: simple structure, at first make this semi-active suspension have double inertia passageway through two mutually different inertia passageways that set up in the recess on the inertia passageway board, secondly realize the switching with single inertia passageway mode and double inertia passageway mode work under the different excitation operating mode through the mechanical type current-limiting switching mechanism who sets up in one of them inertia passageway, form dynamic adjustment, thereby adapt to the vibration isolation demand under the different excitation operating mode, compare with traditional electromagnetic type semi-active suspension, low in manufacturing cost, the assembly precision requirement is low, and convenient to popularize and use.
Drawings
FIG. 1 is a schematic view of the present invention with the support arm removed;
FIG. 2 is a schematic cross-sectional view of the present invention with the support arm removed;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic view of the structure of the main rubber spring mounted on the base;
FIG. 5 is a schematic view of the inertial channel assembly of the present invention;
FIG. 6 is an exploded view of the inertia track assembly of the present invention;
FIG. 7 is a schematic view of an inertial channel plate with a mechanical flow-limiting switching mechanism according to the present invention;
FIG. 8 is a schematic view of the structure of an inertia track plate according to the present invention;
FIG. 9 is a schematic structural diagram of a current-limiting block according to the present invention;
fig. 10 is a schematic cross-sectional view of the mechanical current-limiting switching mechanism of the present invention installed on an inertial channel plate in a dual inertial channel mode of operation of the entire semi-active suspension;
fig. 11 is a schematic cross-sectional view of the mechanical current-limiting switching mechanism of the present invention installed on the inertia path plate, and the whole semi-active suspension works in a single inertia path mode.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in the figure, the semi-active suspension comprises a housing 1, a base 2, a rubber main spring 3 and a bottom membrane 4, wherein the housing 1 is arranged on the base 2 to form an installation cavity 11, the rubber main spring 3 is arranged in the installation cavity 11, and the bottom membrane 4 is arranged on the base 2 and surrounds the rubber main spring 3 to form a closed cavity; an inertia channel assembly is arranged in the closed cavity and divides the closed cavity into an upper liquid chamber Y1 and a lower liquid chamber Y2 which are independent; the inertia channel assembly comprises an inertia channel plate 5, two non-communicated penetration channels are concavely arranged on the inertia channel plate 5, a lower liquid chamber communicating port Y21 used for being communicated with a lower liquid chamber Y2 is arranged on each inertia channel, an inertia channel cover plate 6 used for sealing the upper parts of the two inertia channels is covered on the inertia channel plate 5, two upper liquid chamber communicating ports Y11 which are communicated up and down are arranged on the inertia channel cover plate 6, and an upper liquid chamber communicating port Y11 is correspondingly arranged on each inertia channel to realize the communication between the inertia channel and the upper liquid chamber Y1; and a mechanical current-limiting switching mechanism is arranged in one inertia channel and is used for switching the semi-active suspension to work in a single inertia channel mode and a double inertia channel mode.
In this embodiment, the two inertia channels are a first inertia channel G1 and a second inertia channel G2, a mechanical current-limiting switching mechanism is disposed in the first inertia channel G1, the first inertia channel G1 is a C-shaped structure and includes two first flow grooves G11 horizontally disposed, the two first flow grooves G11 are spaced front and back and are disposed in parallel, outer ends of the two first flow grooves G11 are communicated with each other through a straight first connecting groove G12, a lower liquid chamber communicating port Y21 vertically communicated with the lower liquid chamber Y2 is disposed in one of the first flow grooves G11, and an upper liquid chamber communicating port Y11 is correspondingly disposed on the other first flow groove G11. The first inertia path G1 has a simple structure, and realizes maximum use of space of the inertia path plate 5 in a reasonable range, wherein the straight first connecting groove G12 facilitates assembly and stable use of the mechanical flow-limiting switching mechanism described below.
In this embodiment, the mechanical flow-limiting switching mechanism includes a flow-limiting block 7 and two partition plates 8 having through holes 81 penetrating in the front and back direction, the two partition plates 8 are fixedly installed in the first connecting groove G12 at intervals in the front and back direction, the flow-limiting block 7 is movably installed between the two partition plates 8 in the front and back direction, the two partition plates 8 divide the first inertia passage G1 into a lower liquid chamber communicating portion G111 communicating with the lower liquid chamber Y2, a switching portion G121 for installing the flow-limiting block 7 to realize flow-limiting switching, and an upper liquid chamber communicating portion G112 communicating with the upper liquid chamber Y1, which are independent of each other, the lower liquid chamber communicating portion G111 has a lower liquid chamber communicating port Y21, the upper liquid chamber communicating portion G112 corresponds to an upper liquid chamber communicating port Y11, and a gap for passing liquid is provided between the outer wall of the flow-limiting block 7 and the inner wall of the switching portion G121; the rear end face of the flow limiting block 7 is matched with the front end face of the partition plate 8 positioned behind, and when the rear end face of the flow limiting block 7 is attached to the front end face of the partition plate 8 positioned behind, the flow limiting block 7 blocks a through hole 81 in the partition plate 8 positioned behind; the preceding terminal surface of current limiting block 7 cooperatees with the rear end face of baffle 8 that is located the place ahead, when the preceding terminal surface of current limiting block 7 and the rear end face of baffle 8 that is located the place ahead were laminated, realizes that current limiting block 7 blocks up the via hole 81 on the baffle 8 that is located the place ahead. The mechanical current-limiting switching mechanism is simple in structure and low in cost, the partition plate 8 is installed in the first connecting groove G12, so that liquid coming through the first flow through groove G11 can only pass through the through hole 81 in the partition plate 8 and the gap between the current-limiting block 7 and the inner wall of the first connecting groove, when the semi-active suspension is excited by large amplitude, the displacement of the current-limiting block 7 moving along with the liquid is large, the current-limiting block 7 can be in contact with the two partition plates 8 and can block the through hole 81 in the corresponding partition plate 8, at the moment, the liquid cannot pass through the first inertia channel G1 and only can pass through the second inertia channel G2, so that the semi-active suspension works in a single inertia channel state, the dynamic characteristics of large rigidity and large damping in a frequency range of 9-12 Hz are provided, and the vibration of a power assembly under the action of road surface excitation is reduced; when the semi-active suspension is excited by small amplitude, the flow limiting block 7 in the first inertia channel G1 can move freely and is not in contact with the two partition plates 8, at the moment, liquid can pass through the first inertia channel G1 and the second inertia channel G2, so that the semi-active suspension works in a double-inertia channel state, dynamic stiffness smaller than static stiffness can be provided in a frequency range of 25-30 Hz, and vibration isolation of an engine in an idling state is facilitated.
In this embodiment, the first connection groove G12 and the first flow through groove G11 are connected by a first arc-shaped transition groove G13. Through the first arc-shaped transition groove G13, abnormal sound generated when liquid flows in the first inertia channel G1 can be effectively avoided, and therefore the NVH performance of the whole vehicle is affected.
In this embodiment, the partition plate 8 and the flow restriction block 7 are both rectangular structures, the through hole 81 is provided at the center position of the partition plate 8, the longitudinal sectional area of the flow restriction block 7 is larger than the inner diameter of the through hole 81, the inner diameter of the through hole 81 is smaller than the longitudinal sectional area of the first connecting groove G12, the height and width of the flow restriction block 7 are both smaller than the height and width of the first connecting groove G12, and the length of the flow restriction block 7 in the front-rear direction is smaller than the length of the switching portion G121 in the front-rear direction. The partition plate 8 and the flow limiting block 7 are simple in structure, convenient to manufacture and low in cost, and the matching design of all the sizes is beneficial to switching of the whole semi-active suspension in two different working modes of a single inertia channel and a double inertia channel.
In this embodiment, two side walls of the first connecting groove G12 are respectively provided with side mounting slots G122 for mounting two side portions of the partition board 8, a bottom of the first connecting groove G12 is provided with a lower positioning slot G123 matching with a lower portion of the partition board 8, the two opposite side mounting slots G122 are connected through the lower positioning slot G123, two side portions of the partition board 8 are respectively inserted into the corresponding side mounting slots G122, and a lower portion of the partition board 8 is inserted into the lower positioning slot G123, so that the partition board 8 is fixedly mounted in the first connecting groove G12. The stable fixed installation of the partition plate 8 in the first connecting groove G12 is realized, and it is ensured that after the assembly is completed, the liquid can only pass through the through hole 81 on the partition plate 8, and the stable switching of the mechanical type flow-limiting switching mechanism for two different working modes of the single inertia channel and the double inertia channel is ensured.
In this embodiment, the four outer side walls of the current-limiting block 7 are respectively provided with arc-shaped recesses 71 which are through from front to back. The operation mode of the double inertia channel is facilitated, and liquid can smoothly flow from one first flow through groove G11 to the other first flow through groove G11 through the flow restriction block 7 and the through hole 81 on the partition plate 8.
In this embodiment, the second inertia passage G2 is a mirror-symmetric inverted C-shaped structure with respect to the first inertia passage G1, and includes two horizontally disposed second flow grooves G21, the two second flow grooves G21 are spaced front and back and are arranged in parallel, the outer ends of the two second flow grooves G21 are communicated with each other through a straight second connection groove G22, one of the second flow grooves G21 is provided with a lower liquid chamber communication port Y21 which is vertically through and is used for communicating with the lower liquid chamber Y2, and the other second flow groove G21 is correspondingly provided with an upper liquid chamber communication port Y11; the second connection groove G22 is connected to the second flow groove G21 via a second arc-shaped transition groove G23. The space of the inertia channel plate 5 is reasonably utilized, and abnormal sound generated when liquid flows in the second inertia channel G2 can be effectively avoided through the second arc-shaped transition groove G23, so that the NVH performance of the whole vehicle is influenced.
In this particular embodiment, within the first inertia track G1, the upper fluid chamber communication port Y11 is located at the inner end of one of the first flow channels G11 and the lower fluid chamber communication port Y21 is located at the inner end of the other first flow channel G11; in the second inertia passage G2, the upper liquid chamber communication port Y11 is located at the inner end position of one of the second circulation grooves G21, and the lower liquid chamber communication port Y21 is located at the inner end position of the other second circulation groove G21. The flow paths of the two inertia channels are fully utilized, and the whole semi-active suspension has better performance.
In this embodiment, the positioning posts 51 are protrudingly disposed on the inertia passage plate 5, the inertia passage cover plate 6 is disposed with positioning holes 61 matching with the positioning posts 51, the lower end face of the inertia passage cover plate 6 is tightly attached to the upper end face of the inertia passage plate 5 with the inertia passage, and the positioning posts 51 are embedded in the corresponding positioning holes 61. The stable installation of the inertia channel cover plate 6 on the inertia channel plate 5 is realized through the matching of the positioning columns 51 and the positioning holes 61.
In this embodiment, there are two positioning holes 61, two positioning holes 61 are disposed on two opposite corners of the inertia track cover plate 6, the inner diameters of the two positioning holes 61 are not equal, and one positioning hole 61 is adapted to one positioning post 51 matched with the positioning hole. A more stable mounting of the inertia track cover plate 6 on the inertia track plate 5 is ensured.
In this embodiment, the inertial channel plate 5 is provided with the error-proofing positioning portion 52 in a protruding manner, and the inertial channel cover plate 6 is provided with the error-proofing mounting notch 62 at a position corresponding to the error-proofing positioning portion 52. Through the cooperation between mistake proofing installation breach 62 and mistake proofing location portion 52, realize the quick location installation of inertia passageway apron 6 on inertia passageway board 5, improve assembly efficiency to make production efficiency obtain improving.
In this embodiment, the inertia channel plate 5 has an annular sealing slot 53, two inertia channels are disposed in the annular sealing slot 53, the lower portion of the rubber main spring 3 is disposed with an annular sealing ring 31 matching with the annular sealing slot 53, the lower portion of the rubber main spring 3 is tightly pressed against the inertia channel cover plate 6, and the annular sealing ring 31 is tightly inserted into the annular sealing slot 53 to achieve circumferential sealing. The upper liquid chamber Y1 is sealed by the matching of the annular sealing snap ring 31 and the annular sealing snap groove 53, the lower part of the rubber main spring 3 is tightly pressed and arranged on the inertia channel cover plate 6, and the inertia channel cover plate 6 is stably installed on the inertia channel plate 5.
In this embodiment, the main rubber spring 3 has a supporting framework 10, the supporting framework 10 includes a main supporting portion 101 disposed inside the main rubber spring 3 for realizing main supporting and an installation portion 102 disposed outside the main rubber spring 3, an installation groove 103 is disposed on the installation portion 102, a positioning hook 21 is disposed on the base 2, the positioning hook 21 has a hooking portion 211 for hooking the hooking portion in the installation groove 103, and the hooking portion 211 hooks the installation groove 103 for realizing the fixed installation of the main rubber spring 3 on the base 2. The fixing and mounting structure for realizing the fixing and mounting of the rubber main spring 3 on the base 2 is simple and convenient to assemble.
In this embodiment, the main rubber spring 3 is provided with an arm mounting cavity 32 for mounting an arm, and the arm mounting cavity 32 is provided with an arm (not shown) for connecting with a vehicle body.
In this embodiment, the base 2 is provided with a vertically through mounting opening 22, the bottom membrane 4 includes a bottom membrane main body 41 and a positioning ring 42 surrounding the bottom membrane main body 41, the positioning ring 42 rests on the base 2, the bottom membrane main body 41 is located in the mounting opening 22, the bottom base 2 is provided with an annular sealing recess 23 in a downward concave manner, the sealing recess 23 is disposed surrounding the mounting opening 22, the lower end surface of the positioning ring 42 is provided with a sealing ring 421 protruding downward and matching with the sealing recess 23, the inertia channel plate 5 is pressed on the upper end surface of the positioning ring 42, and the sealing ring 421 is embedded in the sealing recess 23 to realize circumferential sealing. The stable installation of basement membrane 4 on base 2 is realized to above-mentioned structure, and the cooperation of sealing ring 421 and sealed sunken 23 not only realizes the sealed of lower liquid chamber Y2, has further realized the location installation that basement membrane 4 is more stable on base 2 simultaneously.
In this embodiment, the sealing recess 23 is plural, the plural sealing recesses 23 are coaxially arranged at intervals, and the number of the sealing rings 421 is matched with the number of the sealing recesses 23. Further ensuring the sealing property.
The specific working principle of the semi-active suspension is as follows: when the semi-active suspension is excited by simple harmonic displacement, liquid flows between the upper liquid chamber Y1 and the lower liquid chamber Y2 through the first inertia channel G1 and the second inertia channel G2, and under the pressure action of the liquid, the flow limiting block 7 arranged in the first inertia channel G1 moves between the two partition plates 8 along with the liquid; when the semi-active suspension is excited by large amplitude, the displacement of the flow limiting block 7 moving along with liquid is large, the flow limiting block 7 can be in contact with the two partition plates 8 and can block the through holes 81 on the corresponding partition plates 8, at the moment, the liquid can not pass through the first inertia channel G1 and can only pass through the second inertia channel G2, so that the semi-active suspension works in a state of a single inertia channel, and the dynamic characteristics of large rigidity and large damping in a frequency range of 9-12 Hz are provided, so that the vibration of a power assembly under the action of road surface excitation is reduced; when the semi-active suspension is excited by small amplitude, the flow limiting block 7 in the first inertia channel G1 can move freely and is not in contact with the two partition plates 8, at the moment, liquid can pass through the first inertia channel G1 and the second inertia channel G2, so that the semi-active suspension works in a double-inertia channel state, dynamic stiffness smaller than static stiffness can be provided in a frequency range of 25-30 Hz, and vibration isolation of an engine in an idling state is facilitated.
Claims (10)
1. A semi-active suspension comprises a cover, a base, a main rubber spring and a bottom film, wherein the cover is arranged on the base to form an installation cavity; the device is characterized in that an inertia channel assembly is arranged in the closed chamber, and the inertia channel assembly divides the closed chamber into an upper liquid chamber and a lower liquid chamber which are independent; the inertia channel assembly comprises an inertia channel plate, two non-communicated penetration channels are concavely arranged on the inertia channel plate, a lower liquid chamber communicating port used for being communicated with the lower liquid chamber is arranged on each inertia channel, an inertia channel cover plate used for sealing the upper parts of the two inertia channels is covered on the inertia channel plate, two upper liquid chamber communicating ports which are communicated up and down are arranged on the inertia channel cover plate, and one upper liquid chamber communicating port is correspondingly arranged on each inertia channel to realize the communication between the inertia channel and the upper liquid chamber; and a mechanical current-limiting switching mechanism is arranged in one of the inertia channels and is used for switching the semi-active suspension to work in a single inertia channel mode and a double inertia channel mode.
2. The semi-active suspension of claim 1, wherein the two inertia passages are respectively a first inertia passage and a second inertia passage, the first inertia passage is internally provided with the mechanical flow-limiting switching mechanism, the first inertia passage is of a C-shaped structure and comprises two first flow through grooves which are horizontally arranged, the two first flow through grooves are spaced from front to back and are arranged in parallel, the outer ends of the two first flow through grooves are communicated through a first straight strip-shaped connecting groove, one of the first flow through grooves is internally provided with a lower liquid chamber communicating port which is communicated with the lower liquid chamber and is vertically communicated with the lower liquid chamber, and the other first flow through groove is correspondingly provided with an upper liquid chamber communicating port;
the mechanical flow-limiting switching mechanism comprises a flow-limiting block and two partition plates with through holes which are communicated from front to back, the two partition plates are fixedly arranged in the first connecting groove at intervals from front to back, the flow-limiting block can be movably arranged between the two partition plates from front to back, the two partition plates divide the first inertial channel into a lower liquid chamber communicating part which is mutually independent and used for being communicated with a lower liquid chamber, a switching part which is used for installing the flow-limiting block to realize flow-limiting switching and an upper liquid chamber communicating part which is used for being communicated with an upper liquid chamber, the lower liquid chamber communicating part is provided with a lower liquid chamber communicating opening, the upper liquid chamber communicating part corresponds to the upper liquid chamber communicating opening, and a gap for liquid to pass through is arranged between the outer wall of the flow-limiting block and the inner wall of the switching part;
the rear end surface of the current limiting block is matched with the front end surface of the partition board positioned at the rear part, and when the rear end surface of the current limiting block is attached to the front end surface of the partition board positioned at the rear part, the current limiting block blocks the through hole on the partition board positioned at the rear part; the preceding terminal surface of current-limiting piece with be located the place ahead the rear end face of baffle cooperate, work as the preceding terminal surface of current-limiting piece with be located the place ahead the rear end face of baffle paste when, realize the current-limiting piece will be located the place ahead the baffle on the via hole plug up.
3. The semi-active suspension of claim 2 wherein the first connecting slot is connected to the first flow slot by a first arcuate transition slot.
4. The semi-active suspension as claimed in claim 2, wherein the partition and the current-limiting block are both rectangular, the through hole is disposed at the center of the partition, the longitudinal cross-sectional area of the current-limiting block is larger than the inner diameter of the through hole, the inner diameter of the through hole is smaller than the longitudinal cross-sectional area of the first connecting slot, the height and width of the current-limiting block are smaller than the height and width of the first connecting slot, and the length of the current-limiting block in the front-back direction is smaller than the length of the switching portion in the front-back direction.
5. The semi-active suspension as claimed in claim 4, wherein the two side walls of the first connecting slot are respectively recessed with side mounting slots for mounting the two side portions of the partition, the bottom of the first connecting slot is recessed with a lower positioning slot matching with the lower portion of the partition, the two opposite side mounting slots are connected through one lower positioning slot, the two side portions of the partition are respectively inserted into the corresponding side mounting slots, and the lower portion of the partition is inserted into the lower positioning slot, so as to achieve the fixed mounting of the partition in the first connecting slot.
6. The semi-active suspension as claimed in claim 2, wherein the four outer sidewalls of the current-limiting block are respectively provided with arc-shaped recesses which are through from front to back.
7. The semi-active suspension according to claim 3, wherein the second inertia path is an inverse C-shaped structure having mirror symmetry with the first inertia path, and comprises two horizontally arranged second flow grooves, the two second flow grooves are spaced from and parallel to each other, outer ends of the two second flow grooves are communicated with each other through a straight second connection groove, one of the second flow grooves is provided with a lower liquid chamber communication port which is vertically communicated with the lower liquid chamber, and the other second flow groove is correspondingly provided with an upper liquid chamber communication port; the second connecting groove is connected with the second circulating groove through a second arc-shaped transition groove.
8. The semi-active suspension as claimed in claim 1, wherein the inertia path plate is provided with positioning posts protruding thereon, the inertia path cover plate is provided with positioning holes matching with the positioning posts, the lower end surface of the inertia path cover plate is closely attached to the upper end surface of the inertia path plate provided with the inertia path, and the positioning posts are embedded in the corresponding positioning holes.
9. The semi-active suspension as claimed in claim 1, wherein the inertia path plate has an annular seal slot, two inertia paths are disposed in the annular seal slot, the lower portion of the rubber main spring is disposed with an annular seal ring matching with the annular seal slot, the lower portion of the rubber main spring is tightly pressed against the inertia path cover plate, and the annular seal ring is tightly embedded in the annular seal slot to achieve circumferential sealing.
10. The semi-active suspension as claimed in claim 1, wherein the main rubber spring has a supporting framework, the supporting framework comprises a main supporting portion disposed inside the main rubber spring for realizing main support and an installation portion disposed outside the main rubber spring, the installation portion is provided with an installation groove, the base is provided with a positioning hook, the positioning hook has a hooking portion for hooking the main rubber spring in the installation groove, and the hooking portion is hooked in the installation groove for realizing the fixed installation of the main rubber spring on the base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210078752.4A CN114562536B (en) | 2022-01-24 | 2022-01-24 | Semi-active suspension |
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| CN202210078752.4A CN114562536B (en) | 2022-01-24 | 2022-01-24 | Semi-active suspension |
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| CN114562536B CN114562536B (en) | 2024-05-17 |
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| US4756515A (en) * | 1984-08-07 | 1988-07-12 | The Toyo Rubber Industry Co., Ltd. | Fluid-damping vibration-isolating support device |
| CA1297507C (en) * | 1986-07-16 | 1992-03-17 | Richard Paul Thorn | Fluid filled vibration isolator having plural tunable dynamic stiffnesses |
| CN201090657Y (en) * | 2007-10-15 | 2008-07-23 | 宁波拓普减震系统股份有限公司 | Electric control hydraulic pressure mounts |
| US20100213652A1 (en) * | 2009-02-23 | 2010-08-26 | Tokai Rubber Industries, Ltd. | Fluid-filled vibration damping device |
| CN103671688A (en) * | 2013-12-19 | 2014-03-26 | 华南理工大学 | Double-liquid-chamber liquid resistance suspension |
| CN105626768A (en) * | 2016-03-30 | 2016-06-01 | 重庆长安汽车股份有限公司 | Hybrid-mode semi-active suspension and control system thereof |
| CN109915533A (en) * | 2019-03-28 | 2019-06-21 | 吉林大学 | Multiple inertia tracks semi- active control hydraulic mount based on magnetic rheological liquid |
| CN110630677A (en) * | 2019-09-23 | 2019-12-31 | 安徽誉林汽车部件有限公司 | Engine hydraulic suspension structure with double inertia channels |
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2022
- 2022-01-24 CN CN202210078752.4A patent/CN114562536B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4756515A (en) * | 1984-08-07 | 1988-07-12 | The Toyo Rubber Industry Co., Ltd. | Fluid-damping vibration-isolating support device |
| CA1297507C (en) * | 1986-07-16 | 1992-03-17 | Richard Paul Thorn | Fluid filled vibration isolator having plural tunable dynamic stiffnesses |
| CN201090657Y (en) * | 2007-10-15 | 2008-07-23 | 宁波拓普减震系统股份有限公司 | Electric control hydraulic pressure mounts |
| US20100213652A1 (en) * | 2009-02-23 | 2010-08-26 | Tokai Rubber Industries, Ltd. | Fluid-filled vibration damping device |
| CN103671688A (en) * | 2013-12-19 | 2014-03-26 | 华南理工大学 | Double-liquid-chamber liquid resistance suspension |
| CN105626768A (en) * | 2016-03-30 | 2016-06-01 | 重庆长安汽车股份有限公司 | Hybrid-mode semi-active suspension and control system thereof |
| CN109915533A (en) * | 2019-03-28 | 2019-06-21 | 吉林大学 | Multiple inertia tracks semi- active control hydraulic mount based on magnetic rheological liquid |
| CN110630677A (en) * | 2019-09-23 | 2019-12-31 | 安徽誉林汽车部件有限公司 | Engine hydraulic suspension structure with double inertia channels |
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| CN114562536B (en) | 2024-05-17 |
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