CN114562536B - Semi-active suspension - Google Patents
Semi-active suspension Download PDFInfo
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- CN114562536B CN114562536B CN202210078752.4A CN202210078752A CN114562536B CN 114562536 B CN114562536 B CN 114562536B CN 202210078752 A CN202210078752 A CN 202210078752A CN 114562536 B CN114562536 B CN 114562536B
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- inertia
- liquid chamber
- channel
- limiting block
- current
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- 239000000725 suspension Substances 0.000 title claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 106
- 238000004891 communication Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000005192 partition Methods 0.000 claims description 63
- 238000007789 sealing Methods 0.000 claims description 43
- 230000007704 transition Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 15
- 230000009286 beneficial effect Effects 0.000 description 5
- 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
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000037361 pathway Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
Landscapes
- 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 a mounting cavity; is characterized in that an inertia passage assembly is arranged in the closed chamber, and the inertia passage assembly divides the closed chamber into an upper liquid chamber and a lower liquid chamber; the inertia channel assembly comprises an inertia channel plate, two through channels are concavely arranged on the inertia channel plate, a lower liquid chamber communication port used for being communicated with a lower liquid chamber is arranged on each inertia channel, an inertia channel cover plate is arranged on the inertia channel plate in a covering manner, and two upper liquid chamber communication ports which are vertically communicated 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 of the operation in 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, the requirements of people on riding comfort of automobiles are higher. NVH (Noise, vibration, harshness, noise, vibration and harshness) is an important indicator for measuring the riding comfort of a car. In the running process of an automobile, the main sources of vibration are vibration generated when the power assembly works and vibration caused by road surface 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 not only can reduce the vibration transmitted by the power assembly to the frame and improve riding comfort, but also can better protect the power assembly.
Currently common powertrain suspension elements mainly include rubber suspensions, hydraulic suspensions, semi-active suspensions, and active suspensions. The common semi-active suspension is mostly electromagnetic type semi-active suspension, and the performance of the electromagnetic type semi-active suspension is mainly adjusted through an electromagnetic actuating mechanism so as to meet vibration isolation requirements under multiple working conditions, but the electromagnetic type semi-active suspension is generally complex in structure, high in assembly precision requirement on parts and high in cost.
Disclosure of Invention
The invention aims to solve the technical problem of providing a semi-active suspension which has a simple structure, low assembly precision requirements on all parts and low cost.
The technical scheme adopted for solving the technical problems is as follows:
The semi-active suspension comprises a housing, a base, a rubber main spring and a bottom film, wherein the housing is arranged on the base to form a mounting cavity, the rubber main spring is arranged in the mounting cavity, and the bottom film is arranged on the base and surrounds the rubber main spring to form a closed cavity; an inertia passage assembly is arranged in the closed cavity, and the inertia passage assembly divides the closed cavity into an independent upper liquid chamber and an independent lower liquid chamber; the inertia channel assembly comprises an inertia channel plate, two non-communicated through channels are concavely arranged on the inertia channel plate, a lower liquid chamber communication port used for being communicated with the lower liquid chamber is arranged on each inertia channel, an inertia channel cover plate used for covering the upper parts of the two inertia channels is arranged on the inertia channel plate in a covering mode, two upper liquid chamber communication ports which are communicated up and down are arranged on the inertia channel cover plate, and one upper liquid chamber communication port is correspondingly arranged on each inertia channel to realize the communication between the inertia channel and the upper liquid chamber; one of the inertia channels is internally provided with a mechanical current-limiting switching mechanism, and the mechanical current-limiting switching mechanism is used for realizing the switching of the semi-active suspension working in a single inertia channel mode and a double inertia channel mode.
The two inertia channels are a first inertia channel and a second inertia channel respectively, the first inertia channel is internally provided with the mechanical flow-limiting switching mechanism, the first inertia channel is of a C-shaped structure and comprises two first circulation grooves which are horizontally arranged, the two first circulation grooves are arranged at intervals in a front-back mode and are parallel, the outer ends of the two first circulation grooves are communicated through straight first connecting grooves, one of the first circulation grooves is internally provided with a lower liquid chamber communicating port which is communicated with the lower liquid chamber, and the other first circulation groove is correspondingly provided with an upper liquid chamber communicating port. The first inertia passage has a simple structure, and the space of the inertia passage plate is maximally utilized in a reasonable range, wherein the straight first connecting groove is convenient for the assembly and stable use of a mechanical current-limiting switching mechanism.
The mechanical current-limiting switching mechanism comprises a current-limiting block and two partition boards with front and back through holes, wherein the two partition boards are fixedly arranged in the first connecting groove at intervals from front to back, the current-limiting block can be movably arranged between the two partition boards from front to back, the two partition boards divide the first inertial channel into a lower liquid chamber communicating part which is mutually independent and is communicated with a lower liquid chamber, a switching part for installing the current-limiting block to realize current-limiting switching and an upper liquid chamber communicating part which is communicated with an upper liquid chamber, the lower liquid chamber communicating part is provided with the 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 current-limiting block and the inner wall of the switching part; the rear end face of the flow limiting block is matched with the front end face of the rear partition board, and when the rear end face of the flow limiting block is attached to the front end face of the rear partition board, the flow limiting block is used for blocking the through holes in the rear partition board; the front end face of the current limiting block is matched with the rear end face of the front partition board, and when the front end face of the current limiting block is matched with the rear end face of the front partition board, the current limiting block is used for plugging the through holes in the front partition board. 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 flow channel 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 are relatively large in displacement along with the movement of the liquid, the current-limiting blocks can be contacted with the two partition plates, the through holes in the corresponding partition plates can be blocked, at the moment, the liquid cannot pass through the first inertia channel and can only pass through the second inertia channel, the semi-active suspension works in a single inertia channel state, and the dynamic characteristics of large rigidity and large damping in the frequency range of 9-12 Hz are provided, so that the vibration of the power assembly is reduced under the action of road surface excitation; when the semi-active suspension is excited by small amplitude, the flow limiting block in the first inertia passage can freely move and is not contacted with the two partition plates, and at the moment, liquid can pass through the first inertia passage and the second inertia passage, so that the semi-active suspension works in a state of double inertia passages, and dynamic stiffness smaller than static stiffness can be provided in a frequency range of 25-30 Hz, thereby being beneficial to vibration isolation of an engine in an idling state.
The first connecting groove is connected with the first circulating groove through a first arc transition groove. The first arc transition groove can effectively avoid abnormal sound generated when liquid flows in the first inertia channel, so that NVH performance of the whole vehicle is affected.
The baffle with the current-limiting block be rectangular structure, the via hole set up the central point of baffle put, the longitudinal cross section area of current-limiting block be greater than the internal diameter of via hole, the internal diameter of via hole be less than the longitudinal cross section area of first spread groove, the height and the width of current-limiting block all be less than the height and the width of first spread groove, the length of current-limiting block in the fore-and-aft direction be less than the switching part in the length in the fore-and-aft direction. The baffle and the current limiting block are simple in structure, convenient to manufacture and low in cost, and the matched design of the baffle and the current limiting block is beneficial to switching of two different working modes of the whole semi-active suspension in a single inertia channel and a double inertia channel.
The two side walls of the first connecting groove are respectively provided with side mounting slots for mounting the two side parts of the partition board in a recessed manner, the bottom of the first connecting groove is provided with a lower positioning slot matched with the lower part of the partition board in a recessed manner, the two opposite side mounting slots are connected through one lower positioning slot, the two side parts of the partition board are respectively inserted and arranged in the corresponding side mounting slots, and the lower part of the partition board is inserted and arranged in the lower positioning slot to realize the fixed mounting of the partition board in the first connecting groove. The stable fixed mounting of the partition board in the first connecting groove is realized, meanwhile, after the assembly is completed, liquid can only pass through the through holes in the partition board, and the stable switching of the mechanical current-limiting switching mechanism aiming at two different working modes of the single inertia channel and the double inertia channels is ensured.
The four outer side walls of the flow limiting block are respectively provided with an arc-shaped recess which penetrates through the flow limiting block from front to back. In the double-inertia-path operation mode, liquid can smoothly flow from one first flow channel to the other first flow channel through the flow limiting block and the through holes on the partition plate.
The second inertia channel is of a mirror symmetry inverse C-shaped structure with the first inertia channel and comprises two horizontally arranged second circulation grooves, the two second circulation grooves are arranged at intervals in a front-back mode and are parallel to each other, the outer ends of the two second circulation grooves are communicated through a straight second connecting groove, one second circulation groove is internally provided with a lower liquid chamber communicating opening which is communicated with the lower liquid chamber in a vertically penetrating mode, and the other second circulation groove is correspondingly provided with an upper liquid chamber communicating opening; the second connecting groove is connected with the second circulating groove through a second arc transition groove. The space of the inertia passage plate is reasonably utilized, and abnormal sound generated when liquid flows in the second inertia passage can be effectively avoided through the second arc-shaped transition groove, so that the NVH performance of the whole vehicle is affected.
In the first inertial channel, the upper liquid chamber communication port is positioned at the inner end of one of the first flow grooves, and the lower liquid chamber communication port is positioned at the inner end of the other first flow groove; in the second inertia passage, the upper liquid chamber communication port is positioned at the inner end of one of the second circulation grooves, and the lower liquid chamber communication port is positioned at the inner end of the other second circulation groove. The flow paths of the two inertia channels are fully utilized, and the whole semi-active suspension has better performance.
The inertial channel plate is provided with a positioning column in a protruding mode, the inertial channel cover plate is provided with a positioning hole matched with the positioning column, the lower end face of the inertial channel cover plate is tightly attached to the upper end face of the inertial channel plate, which is provided with the inertial channel, and the positioning column is embedded into the corresponding positioning hole. The stable installation of the inertia passage cover plate on the inertia passage plate is realized through the matching of the positioning column and the positioning hole.
The two positioning holes are arranged on two opposite angles of the inertia passage cover plate, the inner diameters of the two positioning holes are unequal, and one positioning hole is matched with a positioning column matched with the positioning hole. Ensuring a more stable mounting of the inertia track cover on the inertia track plate.
The inertial channel plate is provided with an error-proof positioning part in a protruding mode, and an error-proof mounting notch is formed in the position, corresponding to the error-proof positioning part, of the inertial channel cover plate. Through the cooperation between mistake proofing installation breach and the mistake proofing location portion, realize the quick location installation of inertia passageway apron on the inertia passageway board, improve assembly efficiency to make production efficiency obtain improving.
The inertia passageway board on have annular seal draw-in groove, two the inertia passageway set up annular seal draw-in groove in, the lower part of rubber main spring be provided with annular seal draw-in groove matched with annular seal snap ring, the lower part sticiss of rubber main spring set up on the inertia passageway apron, annular seal snap ring closely inlay and establish annular seal draw-in groove in realizing circumference seal. The sealing of the liquid feeding chamber is realized through the matching of the annular sealing clamping ring and the annular sealing clamping groove, the lower part of the rubber main spring is tightly pressed on the inertia passage cover plate, and the stable installation of the inertia passage cover plate on the inertia passage plate is realized.
The rubber main spring is provided with a supporting framework, the supporting framework comprises a main supporting part and a mounting part, the main supporting part is arranged inside the rubber main spring and used for realizing main supporting, the mounting part is arranged outside the rubber main spring, a mounting groove is formed in the mounting part, a positioning hook is arranged on the base, the positioning hook is provided with a hooking part used for hooking the rubber main spring in the mounting groove, and the hooking part is hooked in the mounting groove to realize the fixed mounting of the rubber main spring on the base. 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 the support arm, and the support arm installation cavity is internally provided with the support arm for being connected with the vehicle body.
The base on be provided with the mounting hole that link up from top to bottom, the carrier film include the carrier film main part and encircle the setting and be in the outside holding ring of carrier film main part, the holding ring shelve the base on, the carrier film main part be located the mounting hole in, the base on the undercut be provided with annular seal recess, seal recess encircle and be in the outside of mounting hole, the lower terminal surface of holding ring have downwards protruding with seal recess matched with sealing ring, the inertia passageway board press and establish on the up end of holding ring, the sealing ring inlay and establish in the seal recess realize circumference sealedly. The structure realizes stable installation of the bottom film on the base, and the sealing ring and the sealing recess are matched, so that not only is the sealing of the lower liquid chamber realized, but also more stable positioning and installation of the bottom film on the base is further realized.
The sealing recesses are multiple, the sealing recesses are coaxially arranged at intervals, and the number of the sealing rings is matched with that of the sealing recesses. Further ensuring sealability.
Compared with the prior art, the invention has the advantages that: the electromagnetic type semi-active suspension is characterized by being simple in structure, firstly, the semi-active suspension is provided with the double inertia channels through the two mutually different inertia channels concavely arranged on the inertia channel plate, secondly, the mechanical current-limiting switching mechanism arranged in one of the inertia channels is used for realizing the switching of the single inertia channel mode and the double inertia channel mode under different excitation working conditions, so that dynamic adjustment is formed, vibration isolation requirements under different excitation working conditions are met, and compared with the traditional electromagnetic type semi-active suspension, the electromagnetic type semi-active suspension is low in manufacturing cost, low in assembly precision requirement and convenient to popularize and use.
Drawings
FIG. 1 is a schematic diagram of a mounting arm removed according to the present invention;
FIG. 2 is a schematic cross-sectional view of a mounting arm of the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2A;
FIG. 4 is a schematic view showing a structure in which a rubber main spring is mounted on a base in the present invention;
FIG. 5 is a schematic diagram of an inertial pathway assembly according to the present invention;
FIG. 6 is a schematic exploded view of an inertial pathway assembly according to the present invention;
FIG. 7 is a schematic view of an inertial flow 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 inertial channel plate according to the present invention;
FIG. 9 is a schematic diagram of a current limiting block according to the present invention;
FIG. 10 is a schematic cross-sectional view of the mechanical flow restricting switching mechanism of the present invention mounted on an inertial channel plate with the entire semi-active suspension operating in a dual inertial channel mode;
FIG. 11 is a schematic cross-sectional view of the mechanical flow restricting switching mechanism of the present invention mounted on an inertial channel plate with the entire semi-active suspension operating in a single inertial channel mode.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in the figure, the semi-active suspension comprises a housing 1, a base 2, a rubber main spring 3 and a bottom film 4, wherein the housing 1 is arranged on the base 2 to form a mounting cavity 11, the rubber main spring 3 is arranged in the mounting cavity 11, and the bottom film 4 is arranged on the base 2 and surrounds the rubber main spring 3 to form a closed cavity; an inertia passage assembly is arranged in the closed cavity, and divides the closed cavity into an independent upper liquid chamber Y1 and an independent lower liquid chamber Y2; the inertia channel assembly comprises an inertia channel plate 5, two non-communicated through channels are concavely arranged on the inertia channel plate 5, a lower liquid chamber communication port Y21 for communicating with a lower liquid chamber Y2 is arranged on each inertia channel, an inertia channel cover plate 6 for covering the upper parts of the two inertia channels is arranged on the inertia channel plate 5 in a covering manner, two upper liquid chamber communication ports Y11 which are communicated up and down are arranged on the inertia channel cover plate 6, and one upper liquid chamber communication port Y11 is correspondingly arranged on each inertia channel to realize the communication between the inertia channel and the upper liquid chamber Y1; one of the inertia channels is internally provided with a mechanical current-limiting switching mechanism, and the mechanical current-limiting switching mechanism is used for realizing the switching of the semi-active suspension working in a single inertia channel mode and a double inertia channel mode.
In this embodiment, the two inertial channels are a first inertial channel G1 and a second inertial channel G2, a mechanical current-limiting switching mechanism is disposed in the first inertial channel G1, the first inertial channel G1 is a C-shaped structure and includes two first circulation grooves G11 disposed horizontally, the two first circulation grooves G11 are disposed at intervals and parallel, outer ends of the two first circulation grooves G11 are communicated through a first straight connection groove G12, a lower liquid chamber communication port Y21 communicated with a lower liquid chamber Y2 is disposed in one first circulation groove G11, and an upper liquid chamber communication port Y11 is correspondingly disposed in the other first circulation groove G11. The first inertia track G1 has a simple structure, and achieves the maximum utilization of the space of the inertia track plate 5 in a reasonable range, wherein the straight first connecting groove G12 facilitates the assembly and stable use of the mechanical current-limiting switching mechanism described below.
In this specific embodiment, the mechanical current-limiting switching mechanism includes a current-limiting block 7 and two partition boards 8 with through holes 81 penetrating in front and back, the two partition boards 8 are fixedly installed in the first connecting groove G12 at intervals in front and back, the current-limiting block 7 is movably arranged between the two partition boards 8 in front and back, the two partition boards 8 divide the first inertial channel G1 into a lower liquid chamber communicating part G111 which is mutually independent and is used for communicating with the lower liquid chamber Y2, a switching part G121 which is used for installing the current-limiting block 7 to realize current-limiting switching, and an upper liquid chamber communicating part G112 which is used for communicating with the upper liquid chamber Y1, the lower liquid chamber communicating part G111 is provided with a lower liquid chamber communicating opening Y21, the upper liquid chamber communicating part G112 corresponds to the upper liquid chamber communicating opening Y11, and a gap for passing liquid is arranged between the outer wall of the current-limiting block 7 and the inner wall of the switching part G121; the rear end face of the flow limiting block 7 is matched with the front end face of the rear partition plate 8, and when the rear end face of the flow limiting block 7 is matched with the front end face of the rear partition plate 8, the flow limiting block 7 is used for blocking the through holes 81 in the rear partition plate 8; the front end face of the current limiting block 7 is matched with the rear end face of the front partition plate 8, and when the front end face of the current limiting block 7 is matched with the rear end face of the front partition plate 8, the current limiting block 7 is used for blocking the through holes 81 in the front partition plate 8. The mechanical current-limiting switching mechanism is simple in structure and low in cost, the partition plate 8 is arranged in the first connecting groove G12, so that liquid passing through the first flow channel G11 can only pass through the through holes 81 in the partition plate 8 and gaps on 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 along with the movement of the liquid is large, the current-limiting block 7 can be contacted with the two partition plates 8, the through holes 81 in the corresponding partition plate 8 can be blocked, at the moment, the liquid cannot pass through the first inertia channel G1 and can only pass through the second inertia channel G2, the semi-active suspension works in a single inertia channel state, and the dynamic characteristics of large rigidity and large damping in the frequency range of 9-12 Hz are provided, so that the vibration of a power assembly is reduced under the action of road surface excitation; when the semi-active suspension is excited by small amplitude, the flow limiting block 7 in the first inertia passage G1 can freely move and is not contacted with the two partition boards 8, and liquid can pass through the first inertia passage G1 and the second inertia passage G2, so that the semi-active suspension works in a state of double inertia passages, and dynamic stiffness smaller than static stiffness can be provided in a frequency range of 25-30 Hz, thereby being beneficial to vibration isolation of an engine in an idle state.
In this embodiment, the first connecting groove G12 is connected with the first circulation groove G11 through the first arc-shaped transition groove G13. The first arc-shaped transition groove G13 can effectively prevent abnormal sound generated when liquid flows in the first inertia passage G1, so that NVH performance of the whole vehicle is affected.
In this embodiment, the partition 8 and the flow-limiting block 7 are both rectangular structures, the through hole 81 is disposed at the center of the partition 8, the longitudinal cross-sectional area of the flow-limiting 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 cross-sectional area of the first connecting groove G12, the height and width of the flow-limiting block 7 are both smaller than the height and width of the first connecting groove G12, and the length of the flow-limiting block 7 in the front-rear direction is smaller than the length of the switching portion G121 in the front-rear direction. The baffle 8 and the flow limiting block 7 have simple structure, convenient manufacture and low cost, and the matched design of the sizes is beneficial to the 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, side mounting slots G122 for mounting two side portions of the partition board 8 are respectively concavely provided on two side walls of the first connecting slot G12, a lower positioning slot G123 matched with the lower portion of the partition board 8 is concavely provided at the bottom of the first connecting slot G12, the two opposite side mounting slots G122 are connected through the lower positioning slot G123, the two side portions of the partition board 8 are respectively inserted into the corresponding side mounting slots G122, and the lower portion of the partition board 8 is inserted into the lower positioning slot G123, so as to realize the fixed mounting of the partition board 8 in the first connecting slot G12. The stable fixed installation of the partition plate 8 in the first connecting groove G12 is realized, meanwhile, after the assembly is completed, liquid can only pass through the through holes 81 on the partition plate 8, and the stable switching of the mechanical current-limiting switching mechanism for two different working modes of a single inertia channel and a double inertia channel is ensured.
In this embodiment, the four outer side walls of the flow-limiting block 7 are respectively provided with arc-shaped recesses 71 penetrating from front to back. In the dual inertia track mode of operation, fluid is advantageously allowed to smoothly flow from one first flow channel G11 to the other through the restrictor 7 and the through-holes 81 in the baffle plate 8.
In this embodiment, the second inertial channel G2 has an inverse C-shaped structure that is mirror symmetrical to the first inertial channel G1, and includes two second circulation grooves G21 that are horizontally disposed, the two second circulation grooves G21 are spaced front and back and are disposed in parallel, outer ends of the two second circulation grooves G21 are communicated through a straight second connection groove G22, a lower liquid chamber communication port Y21 that is vertically through and is used for communicating with the lower liquid chamber Y2 is disposed in one second circulation groove G21, and an upper liquid chamber communication port Y11 is correspondingly disposed on the other second circulation groove G21; the second connection groove G22 is connected to the second circulation groove G21 through a second arc-shaped transition groove G23. The space of the inertia passage plate 5 is reasonably utilized, and abnormal sound generated when liquid flows in the second inertia passage G2 can be effectively avoided through the second arc-shaped transition groove G23, so that the NVH performance of the whole vehicle is affected.
In this embodiment, in the first inertial pathway G1, the upper liquid chamber communication port Y11 is located at the inner end position of one of the first flow grooves G11, and the lower liquid chamber communication port Y21 is located at the inner end position of the other first flow groove G11; in the second inertia track G2, the upper liquid chamber communication port Y11 is located at the inner end position of one of the second flow grooves G21, and the lower liquid chamber communication port Y21 is located at the inner end position of the other second flow 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 convexly disposed on the inertia track plate 5, the positioning holes 61 matched with the positioning posts 51 are disposed on the inertia track cover plate 6, the lower end surface of the inertia track cover plate 6 is tightly attached to the upper end surface of the inertia track plate 5 provided with the inertia track, and the positioning posts 51 are embedded into the corresponding positioning holes 61. The stable installation of the inertia track cover 6 on the inertia track plate 5 is achieved by the cooperation of the positioning post 51 and the positioning hole 61.
In this embodiment, two positioning holes 61 are provided, the two positioning holes 61 are disposed on two opposite corners of the inertia track cover 6, the inner diameters of the two positioning holes 61 are unequal, and one positioning hole 61 is adapted to a positioning post 51 matched with the two positioning holes. A more stable mounting of the inertia track cover 6 on the inertia track plate 5 is ensured.
In this embodiment, the inertia track plate 5 is provided with an error-proof positioning portion 52, and the inertia track cover 6 is provided with an error-proof mounting notch 62 at a position corresponding to the error-proof 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 production efficiency obtains improving.
In this embodiment, the inertia track plate 5 has an annular sealing slot 53, two inertia tracks are disposed in the annular sealing slot 53, the lower portion of the main rubber spring 3 is provided with an annular sealing clip ring 31 matched with the annular sealing slot 53, the lower portion of the main rubber spring 3 is tightly pressed on the inertia track cover plate 6, and the annular sealing clip ring 31 is tightly embedded in the annular sealing slot 53 to realize circumferential sealing. The sealing of the upper liquid chamber Y1 is realized through the matching of the annular sealing clamping ring 31 and the annular sealing clamping groove 53, the lower part of the rubber main spring 3 is tightly pressed on the inertia passage cover plate 6, and the stable installation of the inertia passage cover plate 6 on the inertia passage plate 5 is realized.
In this specific embodiment, the rubber main spring 3 has a supporting skeleton 10, the supporting skeleton 10 includes a main supporting portion 101 provided inside the rubber main spring 3 for realizing main supporting and a mounting portion 102 provided outside the rubber main spring 3, a mounting groove 103 is provided on the mounting portion 102, a positioning hook 21 is provided on the base 2, the positioning hook 21 has a hooking portion 211 for hooking in the mounting groove 103, and the hooking portion 211 hooks in the mounting groove 103 for realizing fixed mounting of the rubber main spring 3 on the base 2. The fixed mounting structure for realizing the rubber main spring 3 on the base 2 is simple and convenient to assemble.
In this embodiment, the rubber main spring 3 is provided with a mounting arm mounting chamber 32 for mounting the arm, and an arm (not shown) for connecting with the vehicle body is mounted in the mounting arm chamber 32.
In this specific embodiment, the mounting hole 22 penetrating up and down is arranged on the base 2, the bottom film 4 comprises a bottom film main body 41 and a positioning ring 42 surrounding the outside of the bottom film main body 41, the positioning ring 42 is placed on the base 2, the bottom film main body 41 is located in the mounting hole 22, the base 2 is provided with an annular sealing recess 23 in a downward concave mode, the sealing recess 23 surrounds the outside of the mounting hole 22, the lower end face of the positioning ring 42 is provided with a sealing ring 421 protruding downwards and matched with the sealing recess 23, the inertia passage plate 5 is pressed on the upper end face of the positioning ring 42, and the sealing ring 421 is embedded in the sealing recess 23 to realize circumferential sealing. The above structure realizes the stable installation of the bottom film 4 on the base 2, and the cooperation of the sealing ring 421 and the sealing recess 23 not only realizes the sealing of the lower liquid chamber Y2, but also further realizes the more stable positioning installation of the bottom film 4 on the base 2.
In this embodiment, the sealing recesses 23 are plural, and the plural sealing recesses 23 are coaxially spaced, and the number of the sealing rings 421 is matched with the sealing recesses 23. Further ensuring sealability.
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, a flow limiting block 7 arranged in the first inertia channel G1 moves between two partition plates 8 along with the liquid; when the semi-active suspension is excited by large amplitude, the displacement of the current limiting block 7 along with the movement of liquid is large, the current limiting block 7 can be contacted with two partition boards 8, meanwhile, through holes 81 on the corresponding partition boards 8 can be blocked, at the moment, the liquid cannot pass through a first inertia channel G1 and can only pass through a second inertia channel G2, so that the semi-active suspension works in a single inertia channel state, and the dynamic characteristics of large rigidity and large damping in the frequency range of 9-12 Hz are provided, so that the vibration of a power assembly is reduced under the action of road surface excitation; when the semi-active suspension is excited by small amplitude, the flow limiting block 7 in the first inertia passage G1 can freely move and is not contacted with the two partition boards 8, and liquid can pass through the first inertia passage G1 and the second inertia passage G2, so that the semi-active suspension works in a state of double inertia passages, and dynamic stiffness smaller than static stiffness can be provided in a frequency range of 25-30 Hz, thereby being beneficial to vibration isolation of an engine in an idle state.
Claims (9)
1. The semi-active suspension comprises a housing, a base, a rubber main spring and a bottom film, wherein the housing is arranged on the base to form a mounting cavity, the rubber main spring is arranged in the mounting cavity, and the bottom film is arranged on the base and surrounds the rubber main spring to form a closed cavity; the device is characterized in that an inertia passage assembly is arranged in the closed cavity, and the inertia passage assembly divides the closed cavity into an independent upper liquid chamber and an independent lower liquid chamber; the inertia channel assembly comprises an inertia channel plate, two inertia channels which are not communicated with each other are concavely arranged on the inertia channel plate, a lower liquid chamber communication port which is used for being communicated with the lower liquid chamber is arranged on each inertia channel, an inertia channel cover plate which is used for covering the upper parts of the two inertia channels is covered on the inertia channel plate, two upper liquid chamber communication ports which are communicated up and down are arranged on the inertia channel cover plate, and one upper liquid chamber communication port is correspondingly arranged on each inertia channel to realize the communication between the inertia channel and the upper liquid chamber; one of the inertia channels is internally provided with a mechanical current-limiting switching mechanism, and the mechanical current-limiting switching mechanism is used for realizing the switching of the semi-active suspension working in a single inertia channel mode and a double inertia channel mode;
The two inertia channels are a first inertia channel and a second inertia channel respectively, the first inertia channel is internally provided with the mechanical flow-limiting switching mechanism, the first inertia channel is of a C-shaped structure and comprises two first circulation grooves which are horizontally arranged, the two first circulation grooves are arranged at intervals front and back and in parallel, the outer ends of the two first circulation grooves are communicated through a straight first connecting groove, one of the first circulation grooves is internally provided with a lower liquid chamber communicating port which is communicated with the lower liquid chamber in a vertically penetrating manner, and the other first circulation groove is correspondingly provided with an upper liquid chamber communicating port;
The mechanical current-limiting switching mechanism comprises a current-limiting block and two partition boards with front and back through holes, wherein the two partition boards are fixedly arranged in the first connecting groove at intervals from front to back, the current-limiting block can be movably arranged between the two partition boards from front to back, the two partition boards divide the first inertial channel into a lower liquid chamber communicating part which is mutually independent and is communicated with a lower liquid chamber, a switching part for installing the current-limiting block to realize current-limiting switching and an upper liquid chamber communicating part which is communicated with an upper liquid chamber, the lower liquid chamber communicating part is provided with the 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 current-limiting block and the inner wall of the switching part;
The rear end face of the flow limiting block is matched with the front end face of the rear partition board, and when the rear end face of the flow limiting block is attached to the front end face of the rear partition board, the flow limiting block is used for blocking the through holes in the rear partition board; the front end face of the current limiting block is matched with the rear end face of the front partition board, and when the front end face of the current limiting block is matched with the rear end face of the front partition board, the current limiting block is used for plugging the through holes in the front partition board.
2. A semi-active suspension as defined in claim 1 wherein said first connecting channel is connected to said first flow channel by a first arcuate transition channel.
3. The semi-active suspension of claim 1, wherein the partition plate and the current-limiting block are rectangular structures, the through hole is arranged at the center of the partition plate, the longitudinal 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 sectional area of the first connecting groove, the height and the width of the current-limiting block are smaller than the height and the width of the first connecting groove, and the length of the current-limiting block in the front-rear direction is smaller than the length of the switching part in the front-rear direction.
4. A semi-active suspension as claimed in claim 3 wherein side mounting slots for mounting two side portions of said diaphragm are respectively recessed in both side walls of said first connecting slot, lower positioning slots for engaging with the lower portion of said diaphragm are provided in the bottom of said first connecting slot in a recessed manner, the opposite side mounting slots are connected by a lower positioning slot, the two side portions of said diaphragm are respectively inserted into the corresponding side mounting slots, and the lower portion of said diaphragm is inserted into said lower positioning slot to effect a fixed mounting of said diaphragm in said first connecting slot.
5. The semi-active suspension of claim 1 wherein the four outer side walls of the restrictor block are each provided with arcuate recesses extending longitudinally therethrough.
6. The semi-active suspension as claimed in claim 2, wherein the second inertial channel is an inverted-C structure which is mirror-symmetrical to the first inertial channel, and comprises two second circulation grooves which are horizontally arranged, the two second circulation grooves are arranged at intervals in a front-back direction and are parallel to each other, outer ends of the two second circulation grooves are communicated through a straight second connection groove, one of the second circulation grooves is internally provided with a lower liquid chamber communication port which is vertically communicated with the lower liquid chamber, and the other second circulation 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 transition groove.
7. The semi-active suspension of claim 1, wherein positioning posts are arranged on the inertia passage plate in a protruding manner, positioning holes matched with the positioning posts are formed in the inertia passage cover plate, the lower end face of the inertia passage cover plate is tightly attached to the upper end face of the inertia passage plate provided with the inertia passage, and the positioning posts are embedded into the corresponding positioning holes.
8. The semi-active suspension of claim 1, wherein the inertia passage plate is provided with an annular sealing clamping groove, the two inertia passages are arranged in the annular sealing clamping groove, an annular sealing clamping ring matched with the annular sealing clamping groove is arranged at the lower part of the rubber main spring, the lower part of the rubber main spring is tightly pressed on the inertia passage cover plate, and the annular sealing clamping ring is tightly embedded in the annular sealing clamping groove to realize circumferential sealing.
9. The semi-active suspension of claim 1, wherein the rubber main spring has a supporting framework, the supporting framework comprises a main supporting part arranged in the rubber main spring and used for realizing main supporting, and a mounting part arranged outside the rubber main spring, a mounting groove is arranged on the mounting part, a positioning hook is arranged on the base, the positioning hook is provided with a hooking part used for hooking in the mounting groove, and the hooking part is hooked in the mounting groove and used for realizing the fixed mounting of the rubber main spring on the base.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true 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 |
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| CN201090657Y (en) * | 2007-10-15 | 2008-07-23 | 宁波拓普减震***股份有限公司 | Electric control hydraulic pressure mounts |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5325602B2 (en) * | 2009-02-23 | 2013-10-23 | 東海ゴム工業株式会社 | Fluid filled vibration isolator |
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2022
- 2022-01-24 CN CN202210078752.4A patent/CN114562536B/en active Active
Patent Citations (7)
| 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***股份有限公司 | Electric control hydraulic pressure mounts |
| 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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| CN114562536A (en) | 2022-05-31 |
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