CN104896054A - External friction type car differential with damping structures - Google Patents
External friction type car differential with damping structures Download PDFInfo
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- CN104896054A CN104896054A CN201510380745.XA CN201510380745A CN104896054A CN 104896054 A CN104896054 A CN 104896054A CN 201510380745 A CN201510380745 A CN 201510380745A CN 104896054 A CN104896054 A CN 104896054A
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- differential
- absorbing ring
- damping structure
- planetary
- ring
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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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
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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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/22—Arrangements for suppressing or influencing the differential action, e.g. locking devices using friction clutches or brakes
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
- F16H57/0483—Axle or inter-axle differentials
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/082—Planet carriers
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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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H2048/204—Control of arrangements for suppressing differential actions
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention relates to a car differential, in particular to an external friction type car differential with damping structures, which comprises a planet carrier with a planet gear and two half axle gears with axle necks; the planet carrier is connected with a fixed friction sheet; the peripheral surface of a planet axle is provided with a slide rod; the slide rod is glidingly connected with a movable friction sheet matched with the fixed friction sheet and capable of sliding by a centrifugal force generated when the planet axle rotates; the fixed friction sheet and the movable friction sheet are positioned outside a region defined by the two half axle gears and the planet gear; the half axle gears are provided with the axle necks; the outer peripheral surfaces of the axle necks are provided with a plurality of damping structures peripherally distributed along the axle necks. The external friction type car differential has the advantages of good damping effect, and capability of synchronously rotating the two half axles when the differential speed of the two half axles is larger than a constant value, and solves the problem that the passing capability is severely influenced when a car is driven on a poor road as the existing differential has poor damping effect.
Description
Technical field
The present invention relates to automobile differential, particularly relate to a kind of external friction formula automobile differential being provided with vibration damping structure.
Background technique
Differential mechanism is that one can make rotary motion reach two axles from an axle, and makes the differential attachment that the latter can rotate with different rotating speeds each other.Chinese Patent Application No. 2011800533570, publication date be August 21 in 2013 day, be called the automobile differential namely disclosing an existing structure in the patent document of " locking differential electrically triggered ", automobile differential comprises planetary wheel carrier and is positioned at two differential gears of planetary wheel carrier.During use, the left and right semiaxis (when for being then antero posterior axis during center differential) of automobile stretches into through semiaxis mounting hole after in planetary wheel carrier and links together with two differential gears correspondingly, is driven and rotate by differential gear.In using process, need to inject lubricant oil to lubricate differential mechanism with life-saving.
Existing difference device has the following disadvantages: road vibration is large to the amount of differential mechanism through the axle journal transmission of semiaxis, and namely effectiveness in vibration suppression is poor; When automobile travels on bad road, passing capacity can be had a strong impact on.Such as when a driving wheel of automobile is absorbed in muddy road surface, although another driving wheel is in good road surface, automobile often can not advance (being commonly called as skidding).Trackslip in driving wheel original place now on muddy road surface, the but transfixion of the wheel in good road surface.This is because wheel on muddy road surface and the adhesion between road surface less, the moment of reaction less to semiaxis effect can only be taken turns by this in road surface, therefore to distribute to this torque taken turns also less for differential mechanism, although the adhesion between another driving wheel and good road surface is larger, but because of the feature of mean allocation torque, make this driving wheel also can only assign to the torque with slipping drive wheel equivalent, so that driving force is not enough to overcome running resistance, automobile can not advance, and power then consumes on slipping drive wheel.Now open the throttle and automobile not only can not be made to advance, waste fuel oil on the contrary, accelerate component wear, especially make tire wear aggravate.
Summary of the invention
The invention provides a kind of good damping result, the external friction formula automobile differential being provided with vibration damping structure of two semiaxis synchronous axial system can be made when the differential of two semiaxis is greater than setting value, solve existing differential shock weak effect, the problem of passing capacity can be had a strong impact on when automobile travels on bad road.
Above technical problem is solved by following technical proposal: a kind of external friction formula automobile differential being provided with vibration damping structure, comprise the differential gear that planetary wheel carrier and two are arranged at planetary wheel carrier two ends, the driven gear that described planetary wheel carrier is connected with planetary pinion and drives planetary wheel carrier to rotate, described planetary pinion meshes together with described differential gear, described planetary pinion is linked together with planetary wheel carrier by planet wheel shaft, it is characterized in that, described planetary wheel carrier is connected with determines friction plate, the side face of described planet wheel shaft is provided with slide bar, described slide bar slidably connect with the described movable friction plate slided by the centrifugal force produced during described planet wheel shaft rotation determined friction plate and coordinate, describedly determine friction plate and movable friction plate and be positioned at outside the region that described two differential gears and planetary pinion surround, described differential gear is provided with axle journal, the outer circumferential face of described axle journal is provided with some vibration damping structures along the distribution of axle journal circumference.In using process, when producing skidding, speed difference between two semiaxis can cause the rotating speed of planet wheel shaft larger, the centrifugal force produced when planet wheel shaft rotates makes movable friction plate skid off along slide bar and cause movable friction plate together with determining friction plate and being connected to, thus realize two semiaxis and be fixed together and synchronous axial system, after synchronous axial system, planet wheel shaft can not rotate, now determine friction plate can lose centrifugal force and separate with movable friction plate, folding folding like this and realize the speed discrepancy of two differential gears being controlled in setting range to improve the passing capacity (also namely preventing skidding) of automobile.Axle journal arranges shock-damping structure, vibration can be reduced through axle journal transmission to the amount of differential mechanism inside, so good damping result.
As preferably, the described shock-damping structure radial direction comprised along described axle journal is connected to adjusting nut together, core retainer plate, small end successively towards the butterfly spring of core retainer plate and mounting plate, described mounting plate be connected with through after described elastomeric spring and core retainer plate with the adjusting screw rod that described adjusting nut is threaded togather, described core retainer plate is externally connected with rubber ring, described rubber ring is externally connected with quality circles, and described rubber ring is provided with the taper type counterbore pushing down butterfly spring.The quality circles of shock-damping structure provide mass M for shock-damping structure, and rubber ring provides rigidity and damping for shock-damping structure, by the rubber ring of shock-damping structure, vibrational energy is converted to frictional heat energy and consumes.Can be adjusted rigidity and the damping of shock-damping structure by the weight of adjustment mass block circle and the hardness of rubber ring, the frequency when model frequency of shock-damping structure is resonated with automobile traveling is consistent; By the precompression of rotating adjusting nut adjustable elastic backing plate, the scope of adjustment shock-damping structure rigidity and damping can be expanded.
As preferably, in described core retainer plate, be provided with rubber bushing.The inner peripheral surface of core retainer plate and adjusting screw rod can be avoided to wipe and to touch generation vibration noise.
As preferably, the outer circumferential face of described core retainer plate is provided with several and stretches into core retainer plate portion connecting ring in rubber ring, and the inner peripheral surface of described quality circles is provided with several and stretches into quality circles portion connecting ring in described rubber ring.Connect more firm.
As preferably, oil-filling mechanism is provided with in described planetary pinion, described oil-filling mechanism comprises oil outlet, gas supplementing opening, sealing head, sealing head is driven to seal up the first spring of oil outlet, cylinder body and slipper seal are connected to the piston of cylinder body, described cylinder body is divided into air cavity and oil pocket by described piston, described piston is provided with the one-way valve opened towards air cavity, described piston is linked together with described sealing head by connecting rod, described oil outlet is connected with described oil pocket by oil duct, described gas supplementing opening is connected with described air cavity by air flue, described oil outlet is arranged at described planetary tooth top, the distance that described sealing head stretches out described planetary tooth top is greater than the tooth top gap between described planetary pinion and differential gear.During use, lubricant oil is loaded onto in oil pocket, planetary gear rotation is driven when planet wheel shaft rotates, when planetary gear rotation meshes together to the tooth being provided with oil outlet with differential gear, planetary teeth groove drives in sealing head indentation gear, is also moved towards oil pocket by connecting rod driven plunger and drive lubricant oil in oil pocket to flow to oil outlet through oil duct and flow to fueling cavity thus realize the lubrication to gear when Stamping Steel Ribbon inside contracts while making the first spring energy-storage; When sealing head staggers with teeth groove, oil outlet is sealed in nose heave Xinmi City of effect lower seal of the first spring, the proceduredriven piston of sealing head movement moves towards air cavity, now because the pressure in the part outflow of the oil in oil pocket, event oil pocket is less than the pressure of air cavity, one-way valve is opened and to make in replenish air to oil pocket and to reclaim in oil suction chamber by unnecessary having in fueling cavity, make next time piston press oil pocket time lubricant oil can reliably flow out.Achieve self oiling.Can overcome and can produce splash phenomena when lubricating in prior art and the deficiency causing lubrication effect to decline.
As preferably, described planetary wheel carrier is shell construction, and described planetary wheel carrier and differential gear surround Seal cage, is filled with inert gas in described Seal cage, and the air pressure in described Seal cage is greater than a standard atmospheric pressure.In time the heat loss produced during planetary gear rotation can be fallen, prevent temperature from rising too high and affecting the friction effect of friction plate.
As preferably, described movable friction plate is provided with cushion pad, and described cushion pad is loop configuration, and the rubbing surface of described movable friction plate is positioned at the region that described cushion pad surrounds.Preferably can prevent from movable friction plate and determine friction plate closing up in process and producing excessive impact and cause friction plate to damage.
As preferably, the first absorbing ring that described cushion pad is provided with vacuum breaker passage and extends along cushion pad bearing of trend, the second absorbing ring extended along cushion pad bearing of trend is provided with in described first absorbing ring, adsorption tank is formed between described first absorbing ring and the second absorbing ring, described dust-absorbing groove is all connected by the space outerpace of described vacuum breaker passage with the first absorbing ring with both inner spaces of the second absorbing ring, the flat segments that the tangent direction along described planet pin extends is provided with in described vacuum breaker passage, be provided with the centrifugal force produced when being rotated by described planet wheel shaft in described flat segments to move and the plug blocking described vacuum breaker passage and the valve opening spring that plug is opened.Dynamic to determine when friction plate closes up except normal frictional force is fixed, also extrude the first absorbing ring and the second absorbing ring simultaneously, make all to form negative pressure in the inner space of the first absorbing ring and adsorption tank, also namely carry out adsorbing together with the second absorbing ring by the first absorbing ring and be fixed.When vibrated or instant impact and make the first absorbing ring absorption place produce moment partial disengagement time, under the effect of the second absorbing ring, after instant impact disappears, the first absorbing ring again can recover and adsorb, make absorbing ring be subject to moment impact and produce local instantaneously disconnect time can not produce obscission, and namely the slippage of adsorption force littlely can still keep good suction-operated, good reliability when therefore fixing, is not easy between friction plate to skid separately.Anti-vibration ability when friction plate is close together and reliability can be improved.Sucker can vacuum breaker automatically in time when friction plate needs separately for this technological scheme, thus can not interfere the normal differential action of differential mechanism.
As preferably, be provided with the some elastomeric connector strip the first absorbing ring and the second absorbing ring linked together in described adsorption tank, described elastomeric connector strip distributes along the first absorbing ring bearing of trend.When the first absorbing ring and the second absorbing ring all adsorb upper, elastomeric connector strip is elongated and energy storage, this energy produces the trend impelling the first absorbing ring to move towards absorbate, make when the first absorbing ring produce disconnect instantaneously time, accelerate the first absorbing ring and return to adsorbed state.Also namely reduce further the possibility that when receiving moment impact, friction plate separates, also namely improve anti-moment impact ability when friction plate is close together in other words.
As preferably, the absorption end of described second absorbing ring stretches out the absorption end of described first absorbing ring.Better reliability during absorption.
The present invention has following advantage: the speed discrepancy of two differential gears can be limited in setting difference range, and when causing planetary pinion rotating speed too fast when exceeding setting value, two semiaxis can synchronous axial system, improve automobile passing capacity and can anti-slip; Movable friction plate and movable friction plate are positioned at outside the region that two differential gears and planetary pinion surround, easy to assembly; Good damping result.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the embodiment of the present invention two.
Fig. 3 is the front elevational schematic of the movable friction plate in the embodiment of the present invention three.
Fig. 4 is C-C cross-sectional schematic of Fig. 3.
Fig. 5 is the close-up schematic view at the D place of Fig. 4.
Fig. 6 is planetary pinion in the embodiment of the present invention four and differential gear schematic diagram when meshing together.
Fig. 7 is the close-up schematic view at the A place of Fig. 6.
Fig. 8 is the close-up schematic view at the B place of Fig. 6.
Fig. 9 is the cross-sectional schematic of shock-damping structure.
In figure: planetary wheel carrier 1, driven gear 2, determine friction plate 3, determine the rubbing surface 31 of friction plate, movable friction plate 4, sliding sleeve 41, the rubbing surface 42 of movable friction plate, shock-damping structure 5, mounting plate 51, butterfly spring 52, core retainer plate 53, core retainer plate portion connecting ring 531, adjusting nut 54, locking nut 55, adjusting screw rod 56, rubber bushing 57, rubber ring 58, taper type counterbore 581, quality circles 59, quality circles portion connecting ring 591, planetary pinion 6, tooth top 61, planet wheel shaft 62, differential gear 7, axle journal 71, internal spline 72, sealing cover 73, oil-filling mechanism 8, oil outlet 81, gas supplementing opening 82, sealing head 83, first spring 84, cylinder body 85, air cavity 851, oil pocket 852, piston 86, one-way valve 861, connecting rod 862, oil duct 87, air flue 88, cushion pad 9, first absorbing ring 91, the absorption end 911 of the first absorbing ring, second absorbing ring 92, the absorption end 921 of the second absorbing ring, adsorption tank 93, elastomeric connector strip 94, vacuum breaker passage 95, flat segments 951, plug 96, valve opening spring 97, sealing head stretches out the distance L1 of planetary tooth top, tooth top gap L2 between planetary pinion and differential gear, the region S1 that two differential gears and planetary pinion surround, Seal cage S2.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment one, and see Fig. 1, a kind of external friction formula automobile differential being provided with vibration damping structure, comprises planetary wheel carrier 1.Planetary wheel carrier 1 is shell construction.The two ends, left and right of planetary wheel carrier 1 are respectively rotatably connected to a differential gear 7.Differential gear 7 is provided with axle journal 71.Axle journal 71 outer circumferential face is provided with several shock-damping structures 5 distributed along axle journal circumference.Shock-damping structure 5 comprises mounting plate 51 and quality circles 59.Mounting plate 51 and quality circles 59 are along the radially direct of axle journal 71.Differential gear 7 is rotationally connected with planetary wheel carrier 1 by axle journal 71.Axle journal 71 is tubular structure.Internal spline 72 is provided with in axle journal 71.Planetary wheel carrier 1 be externally connected to driven gear 2.Driven gear 2 is gear ring.Planetary wheel carrier 1 is also rotatably connected to planet wheel shaft 62.The two ends of planet wheel shaft 62 are respectively connected with a planetary pinion 6.Planetary pinion 6 meshes together with two differential gears 7 all simultaneously.Planetary wheel carrier 1 is also connected with determines friction plate 3.Determine friction plate 3 and have two.Determine friction plate 3 to be positioned at outside the region S1 that two differential gears and planetary pinion surround.Determine friction plate 3 for Cylindrical housing structure.Planet wheel shaft 621 is provided with two groups of slide bars 55.Slide bar 55 in same group of slide bar distributes along the circumference of planet wheel shaft 62.Slide bar 55 extends (realize to better utilize centrifugal force skidding off, slide bar 55 extends then best results along the tangent direction of planet wheel shaft 62) along the radial direction of planet wheel shaft 62.Slide bar 55 is arranged with sliding sleeve 41.Sliding sleeve 41 links together with movable friction plate 4.Movable friction plate 4 is positioned at outside the region S1 that two differential gears and planetary pinion surround.The rubbing surface 42 of movable friction plate is cylndrical surface.The curvature of the rubbing surface 42 of movable friction plate is identical with the curvature of the rubbing surface 31 determining friction plate.
See Fig. 9, shock-damping structure 5 also comprises locking nut 55, adjusting nut 54, core retainer plate 53 and the small end butterfly spring 52 towards core retainer plate.Together with locking nut 55, adjusting nut 54, core retainer plate 53, butterfly spring 52 and mounting plate 51 are connected to successively along the radial direction of axle journal.Mounting plate 51 is connected with adjusting screw rod 56.Adjusting screw rod 56 is threaded togather with adjusting nut 54 and locking nut 55 through after butterfly spring 52 and core retainer plate 53.Rubber bushing 57 is provided with in core retainer plate 53.Core retainer plate 53 is externally connected with rubber ring 58.The outer circumferential face of core retainer plate 53 is provided with several and stretches into core retainer plate portion connecting ring 531 in rubber ring 58.Rubber ring 58 is provided with the taper type counterbore 581 pushing down butterfly spring 52.Quality circles 59 are connected to outside rubber ring 58.Quality circles 59 are made for steel.The inner peripheral surface of quality circles 59 is provided with several and stretches into quality circles portion connecting ring 591 in rubber ring 58.Shock-damping structure 5 links together with axle journal by being welded in journal surface by mounting plate 51.
See Fig. 1, during use, two semiaxis (for left and right semiaxis or antero posterior axis) are stretched in axle journal 71 and are meshed together with internal spline 72 and link together with the present invention.Driving gear on power input shaft meshes together with driven gear 2 and drives planetary wheel carrier 1 one axle journal 71 for axle rotation, and planetary wheel carrier 1 pulls differential gear 7 with axle journal 71 for axle rotates by planetary pinion 6.Differential gear 7 drives two semiaxis to rotate, when two differential gears produce rotating speeds inconsistent time, planetary pinion 6 also carries out oneself with planet wheel shaft 62 for axle while revolving round the sun then realizes differential.When differential be greater than setting value namely skid time, the centrifugal force produced when planet wheel shaft 62 rotates makes movable friction plate 4 be connected to determine on friction plate 3, thus realizes holding together two differential gears 7 tightly (i.e. synchronous axial system), skidding can not being produced.Skid eliminate after, planet wheel shaft 62 rotating speed declines movable friction plate 4 is subject to centrifugal force decline, the rubbing surface 42 of movable friction plate is together with determining friction plate 3 and can not rubbing, and differential mechanism recovers normal differential action.
Embodiment two, and the difference with embodiment one is:
See Fig. 2, the inner of axle journal 71 is provided with sealing cover 73.Planetary wheel carrier 1 and differential gear 7 surround Seal cage S2.Inert gas is filled with in Seal cage S2.Air pressure in Seal cage S2 is greater than a standard atmospheric pressure.Seal cage S2 is also filled with lubricant oil.
Embodiment three, and the difference with embodiment two is:
See Fig. 3, movable friction plate 4 is provided with cushion pad 9.Cushion pad 9 is loop configuration.The rubbing surface 42 of movable friction plate is positioned at the region that cushion pad 9 surrounds.Cushion pad 9 is provided with the first absorbing ring 91.First absorbing ring 91 extends along cushion pad 9 bearing of trend.The second absorbing ring 92 is provided with in first absorbing ring 91.Second absorbing ring 92 extends along cushion pad bearing of trend.Two annular adsorption tanks 93 are formed between first absorbing ring 91 and the second absorbing ring 92.Article two, adsorption tank 93 is positioned at the both sides of the second absorbing ring 92 width direction.Some elastomeric connector strip 94 are together provided with in adsorption tank 93.First absorbing ring 91 and the second absorbing ring 92 link together by elastomeric connector strip 94.Elastomeric connector strip 94 distributes along the first absorbing ring 91 bearing of trend.
See Fig. 4, cushion pad 9 is provided with vacuum breaker passage 95.Adsorption tank 93 is all connected, is specially disjunctor in sleeve pipe 41 by the space outerpace of vacuum breaker passage 95 with the first absorbing ring 91 with both inner spaces of the second absorbing ring 92.The gas of discharging during such absorption can play and accelerate movable friction plate 4 and determine the effect that friction plate closes.
Flat segments 951 is provided with in vacuum breaker passage 95.Flat segments 951 extends along the tangent direction of planet pin 5.Plug 96 is provided with in vacuum breaker passage 95.Plug 96 is positioned at flat segments 951.The absorption end 921 of the second absorbing ring stretches out the absorption end 911 of the first absorbing ring.The absorption end 911 of the first absorbing ring exceeds the rubbing surface 42 of movable friction plate.
See Fig. 5, in vacuum breaker passage 95, be also provided with valve opening spring 97.Valve opening spring 97 does not block vacuum breaker passage 95 for making plug 96.Elastomeric connector strip 94 and the first absorbing ring 91 link together in the mode of integrative-structure.Elastomeric connector strip 94 and the second absorbing ring 92 link together in the mode of integrative-structure.
In using process, at movable friction plate 4 under the influence of centrifugal force with determining friction plate 3(see Fig. 1) frictional engagement together before, the first absorbing ring 91 and the second absorbing ring 92 first adsorb determine friction plate and the effect of playing alleviation impact force and the effect that reinforces the connection.The elastic force that centrifugal force overcomes valve opening spring 97 makes plug 96 can remain on the state closing vacuum breaker passage 95.When centrifugal force declines and needs differential mechanism to recover normal state, valve opening spring 97 overcomes centrifugal force and plug 96 is opened, thus makes adsorption force not affect movable friction plate 4 and determine the normal separation of friction plate.
Embodiment four, and the difference with embodiment three is:
See Fig. 6, in planetary pinion 6, be provided with oil-filling mechanism 8.The number of oil-filling mechanism 8 is equal with the number of teeth of planetary pinion 6.
See Fig. 7, oil-filling mechanism 8 comprises oil outlet 81, gas supplementing opening 82, sealing head 83, first spring 84, cylinder body 85 and piston 86.The oil outlet 81 of same oil-filling mechanism and gas supplementing opening 82 are arranged on the tooth top 61 of the same tooth of planetary pinion 6, the tooth top of same tooth only arranges oil outlet and the gas supplementing opening of an oil-filling mechanism, and namely in the present embodiment, the tooth of oil-filling mechanism and planetary pinion 6 is arranged correspondingly.Sealing head 83 and the first spring 84 are arranged in oil outlet 81, stretch out tooth top 61 at the effect lower seal head 83 of the first spring 84 and seal up oil outlet.The distance L1 that sealing head stretches out planetary tooth top is greater than tooth top gap L2(between planetary pinion and differential gear see Fig. 8).Cylinder body 85 is formed in planetary pinion 6 in the mode of integrative-structure, is the chamber in planetary pinion 6.Piston 86 slipper seal is connected to cylinder body 85.Cylinder body 85 is divided into air cavity 851 and oil pocket 852 by piston 86.Piston 86 is provided with the one-way valve 861 opened towards air cavity 851.Piston 86 is linked together with sealing head 83 by connecting rod 862.Connecting rod 862 links together with slipper seal between planetary pinion 6, and oil outlet 81 is disconnected with air cavity 851.Oil outlet 81 is connected with oil pocket 852 by oil duct 87.Gas supplementing opening 82 is connected with air cavity 851 by air flue 88.Oil duct 87 and air flue 88 are all be formed in planetary pinion 6 in the mode of integrative-structure, are the hole in planetary pinion 6.
The process of the present invention's lubrication is:
See Fig. 6 and Fig. 8, in the process that planetary pinion 6 rotates, bottom surface crush seal 83 contraction in planetary pinion 6 of the teeth groove of differential gear 7, sealing head 83 shrinks and oil outlet 81 is opened and makes the first spring 84 energy storage.
See Fig. 7, also moved towards oil pocket 852 by connecting rod 862 driven plunger 86 when sealing head 83 shrinks, the pressure increase in oil pocket 852 is closed by one-way valve 861 and lubricant oil in oil pocket 852 flows to oil outlet 81 through oil duct 87 and flows out from oil outlet 81 and realize lubrication.
When differential gear loses the squeezing action to sealing head 83, move outside the effect lower seal head 83 of the first spring 84 and oil outlet 81 is sealed up, moved towards air cavity 851 by connecting rod 862 driven plunger 86 when sealing head 83 stretches out, pressure drop in oil pocket 852 and pressure increase in air cavity 851, one-way valve 861 is opened, oil unnecessary in air and fueling cavity 56 is through gas supplementing opening 82, air flue 88 and one-way valve 861 and flow to oil pocket 852, the air pressure that pressure in oil pocket 852 can be maintained in same gear exterior is equal, so that lubricant oil can squeeze out by piston 86 when oil pocket 852 moves next time.
Therefore do not need in the present embodiment to add lubricant oil in planetary wheel carrier, achieve the good reliability when dry-type working of friction plate, friction adhesive.
Claims (10)
1. one kind is provided with the external friction formula automobile differential of vibration damping structure, comprise the differential gear that planetary wheel carrier and two are arranged at planetary wheel carrier two ends, the driven gear that described planetary wheel carrier is connected with planetary pinion and drives planetary wheel carrier to rotate, described planetary pinion meshes together with described differential gear, described planetary pinion is linked together with planetary wheel carrier by planet wheel shaft, it is characterized in that, described planetary wheel carrier is connected with determines friction plate, the side face of described planet wheel shaft is provided with slide bar, described slide bar slidably connect with the described movable friction plate slided by the centrifugal force produced during described planet wheel shaft rotation determined friction plate and coordinate, describedly determine friction plate and movable friction plate and be positioned at outside the region that described two differential gears and planetary pinion surround, described differential gear is provided with axle journal, the outer circumferential face of described axle journal is provided with some vibration damping structures along the distribution of axle journal circumference.
2. the external friction formula automobile differential being provided with vibration damping structure according to claim 1, its feature exists, the described shock-damping structure radial direction comprised along described axle journal is connected to adjusting nut together, core retainer plate, small end successively towards the butterfly spring of core retainer plate and mounting plate, described mounting plate be connected with through after described elastomeric spring and core retainer plate with the adjusting screw rod that described adjusting nut is threaded togather, described core retainer plate is externally connected with rubber ring, described rubber ring is externally connected with quality circles, and described rubber ring is provided with the taper type counterbore pushing down butterfly spring.
3. the external friction formula automobile differential being provided with vibration damping structure according to claim 2, is characterized in that, be provided with rubber bushing in described core retainer plate.
4. the external friction formula automobile differential being provided with vibration damping structure according to Claims 2 or 3, it is characterized in that, the outer circumferential face of described core retainer plate is provided with several and stretches into core retainer plate portion connecting ring in rubber ring, and the inner peripheral surface of described quality circles is provided with several and stretches into quality circles portion connecting ring in described rubber ring.
5. the external friction formula automobile differential being provided with vibration damping structure according to claim 1 or 2 or 3, it is characterized in that, oil-filling mechanism is provided with in described planetary pinion, described oil-filling mechanism comprises oil outlet, gas supplementing opening, sealing head, sealing head is driven to seal up the first spring of oil outlet, cylinder body and slipper seal are connected to the piston of cylinder body, described cylinder body is divided into air cavity and oil pocket by described piston, described piston is provided with the one-way valve opened towards air cavity, described piston is linked together with described sealing head by connecting rod, described oil outlet is connected with described oil pocket by oil duct, described gas supplementing opening is connected with described air cavity by air flue, described oil outlet is arranged at described planetary tooth top, the distance that described sealing head stretches out described planetary tooth top is greater than the tooth top gap between described planetary pinion and differential gear.
6. the external friction formula automobile differential being provided with vibration damping structure according to claim 1 and 2, it is characterized in that, described planetary wheel carrier is shell construction, described planetary wheel carrier and differential gear surround Seal cage, be filled with inert gas in described Seal cage, the air pressure in described Seal cage is greater than a standard atmospheric pressure.
7. the external friction formula automobile differential being provided with vibration damping structure according to claim 1 or 2 or 3, it is characterized in that, described movable friction plate is provided with cushion pad, and described cushion pad is loop configuration, and the rubbing surface of described movable friction plate is positioned at the region that described cushion pad surrounds.
8. the external friction formula automobile differential being provided with vibration damping structure according to claim 7, it is characterized in that, the first absorbing ring that described cushion pad is provided with vacuum breaker passage and extends along cushion pad bearing of trend, the second absorbing ring extended along cushion pad bearing of trend is provided with in described first absorbing ring, adsorption tank is formed between described first absorbing ring and the second absorbing ring, described dust-absorbing groove is all connected by the space outerpace of described vacuum breaker passage with the first absorbing ring with both inner spaces of the second absorbing ring, the flat segments that the tangent direction along described planet pin extends is provided with in described vacuum breaker passage, be provided with the centrifugal force produced when being rotated by described planet wheel shaft in described flat segments to move and the plug blocking described vacuum breaker passage and the valve opening spring that plug is opened.
9. the external friction formula automobile differential being provided with vibration damping structure according to claim 8, it is characterized in that, be provided with the some elastomeric connector strip the first absorbing ring and the second absorbing ring linked together in described adsorption tank, described elastomeric connector strip distributes along the first absorbing ring bearing of trend.
10. the external friction formula automobile differential being provided with vibration damping structure according to claim 8, is characterized in that, the absorption end of described second absorbing ring stretches out the absorption end of described first absorbing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380745.XA CN104896054A (en) | 2015-06-30 | 2015-06-30 | External friction type car differential with damping structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380745.XA CN104896054A (en) | 2015-06-30 | 2015-06-30 | External friction type car differential with damping structures |
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| CN104896054A true CN104896054A (en) | 2015-09-09 |
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| CN201510380745.XA Pending CN104896054A (en) | 2015-06-30 | 2015-06-30 | External friction type car differential with damping structures |
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| CN (1) | CN104896054A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185421A (en) * | 2018-11-23 | 2019-01-11 | 湖北科技学院 | A kind of differential mechanism with adaptive latch functions |
| CN109442023A (en) * | 2018-12-17 | 2019-03-08 | 玉环县格黎特汽车配件厂 | A kind of integral cold forging angular wheel shaft |
-
2015
- 2015-06-30 CN CN201510380745.XA patent/CN104896054A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185421A (en) * | 2018-11-23 | 2019-01-11 | 湖北科技学院 | A kind of differential mechanism with adaptive latch functions |
| CN109185421B (en) * | 2018-11-23 | 2024-01-09 | 湖北科技学院 | Differential mechanism with self-adaptive locking function |
| CN109442023A (en) * | 2018-12-17 | 2019-03-08 | 玉环县格黎特汽车配件厂 | A kind of integral cold forging angular wheel shaft |
| CN109442023B (en) * | 2018-12-17 | 2020-12-15 | 玉环县格黎特汽车配件厂 | Integral cold forging bevel gear shaft |
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Application publication date: 20150909 |