CN101952613B - Friction clutch - Google Patents
Friction clutch Download PDFInfo
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- CN101952613B CN101952613B CN200880024846.1A CN200880024846A CN101952613B CN 101952613 B CN101952613 B CN 101952613B CN 200880024846 A CN200880024846 A CN 200880024846A CN 101952613 B CN101952613 B CN 101952613B
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- platen
- clutch
- friction
- lever system
- clutch housing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/75—Features relating to adjustment, e.g. slack adjusters
- F16D13/757—Features relating to adjustment, e.g. slack adjusters the adjusting device being located on or inside the clutch cover, e.g. acting on the diaphragm or on the pressure plate
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to a friction clutch, which comprises at least one clutch housing with a pressure plate which is rotationally fixed but axially displaceable to a limited extent relative to the clutch housing, and which can be acted upon axially by a lever system supported on the clutch housing relative to the pressure plate fixedly arranged on the clutch housing in order to clamp the friction linings of a clutch disk. The wear of the friction linings is compensated for in this case by: a first distance between the pressure plate and the lever system is compensated by a torsion of a ramp system arranged between the pressure plate and the lever system by means of a torsion device, and if a second predetermined distance between the pressure plate and the clutch housing is determined when the pressure plate is loaded with maximum force by the lever system, said second distance exceeding a predetermined value, the torsion is achieved during the pressure relief of the pressure plate by the lever system and during the displacement of the pressure plate by means of an energy accumulator acting between the pressure plate and the clutch housing.
Description
Technical field
The present invention relates to a kind of friction clutch, have that a compression plate and can axial limited movement with respect to this compression plate, loaded by a lever system for set up the platen of frictional fit with respect to the friction plate of a clutch driven plate, wherein, according to wearing and tearing, adjusting and realizing regulating again of friction clutch again by this lever system.
Background technique
The known friction clutch again with controlling device.This controlling device more for example can realize on power control ground.Here detect lever system that the platen of friction clutch is loaded, for example belleville spring impacting force the unfavorable variation causing due to wearing and tearing and regulate again according to this impacting force.Also can be selectively, try to achieve the error spacing between clutch housing and the lever system producing and revise according to error spacing in the time of the friction disc wear of clutch driven plate.In this case correction, make to be arranged on compensation mechanism between platen and lever system as ramp system (Rampensystem) or screw thread rotation.Due to vibration or quality and inertia effects, less desirable rotation may cause overcompensation or not enough compensation.
Summary of the invention
Therefore the object of the invention is, propose a friction clutch, it has a controlling device more solid, that can simply manufacture and adjust.
This object is achieved by friction clutch on the one hand, it is at least made up of a clutch housing, this clutch housing with one relative to this clutch housing without in relative rotation but the platen that axially can limitedly move, this platen can be moved with respect to the platen being fixedly installed on clutch housing in the axial direction by a lever system being bearing on clutch housing, to clamp the friction plate of clutch driven plate, wherein, realize shape between a torsion device and a control gear according to the change of distance between compression plate and platen sealed, the ramp system that this torsion device makes to be arranged between platen and lever system is reversed, for compensate the error spacing between platen and the lever system producing in the time wearing and tearing, this control gear utilizes sealed this torsion device of controlling of shape, and this torsion device utilizes this control gear in the time that platen moves towards lever system, for example in the time that opening, friction clutch twists.
On the other hand, same object is achieved by corresponding friction clutch, its mode is, this torsion device is unloaded by this lever system at this platen by this control gear and this platen is reversed during mobile by described accumulator working between platen and this friction clutch housing, for example leaf spring.
In this way, on the one hand, with some compensation that controlling device is is differently worn and torn in the time that friction clutch is opened again, at these again in controlling device, control gear or other memory unit as accumulator or displacement transducer during opening friction clutch or before the intermediate storage wearing and tearing spacing of trying to achieve or error spacing and in the time that friction clutch is closed as described in control gear compensate this error spacing according to the value of this intermediate storage.On the other hand, described control gear only just forms effective contact with torsion device in the time in fact having determined wearing and tearing.Therefore can get rid of the unnecessary source of trouble that affects torsion device by control gear.
Refer to a leverage about lever system, the configuration condition lower support that it fixes on single armed or double-arm lever according to friction clutch as the form of implementation of pressure type or pull type clutch is on clutch housing, wherein this lever with respect to housing shaft to utilizing one or more accumulators to clamp, for use in applying impacting force with respect to platen, make thus platen clamp in the axial direction with a compression plate under the condition of the friction plate formation frictional fit of formation and clutch driven plate, this compression plate can be configured to single mass flywheel or be the secondary parts of a double mass flywheel.Self-evident, the principle of controlling device again proposing also can be in an advantageous manner in the time of corresponding coupling for so-called pressing formed type or pulling type friction clutch, wherein, utilizing one to react under the condition of active force of breaking force and in the direction towards platen, press or draw if be bearing in lever system on clutch housing, this pressing formed type or pulling type friction clutch are by utilizing impacting force from the open mode without active force, sealed with the friction plate foundation friction of clutch driven plate.
In a preferred form of implementation, described lever system can be made up of belleville spring, and it utilizes the power edge of radially outer to utilize disc spring tongue to be axially loaded as lever as accumulator and in inner radial.For platen is resetted by the impacting force weakening during separation process, the accumulator working against described impacting force on being arranged on axially between clutch housing and platen is as leaf spring, and they move platen during friction clutch separation process in the time that impacting force weakens towards clutch housing.According to thought of the present invention, at least a portion of the reposition force of these accumulators regulates for friction clutch again, and wherein these accumulation of energys are correspondingly designed size for this process.
Can make torsion device be received on platen at this, for example, can make a tabular holding device and platen riveted joint, utilize tabular holding device to receive torsion device.Described torsion device can form by this way, makes to be axially delivered to power on torsion device by control gear and utilizes a transmission device to be converted on Zhou Fangxiang, to act on the power in ramp system.Advantageously, torsion device can be a leading screw being rotatably received on platen, and it is driven and receive a feed screw nut by control gear, and its shape is embedded in the ramp system of an annular formation in locking manner.Can be for example an inclined plane ring in this this ramp system, it have some axially upper that form, be distributed in the inclined-plane on circumference, this inclined plane ring and corresponding inclined surface interaction effect that be shaped or that install on platen, therefore, while torsion in the direction of the inclined-plane of the opposite direction towards inclined plane ring and inclined surface lift on inclined-plane, axial height increases.Described inclined plane ring has the dead slot of the quantity suitable with the quantity of matching mechanism for the sealed cooperation of the shape of feed screw nut, it is sealed that matching mechanism and these dead slots form shape.This matching mechanism can be arranged on feed screw nut, for example type exterior feature that gone out by the material forming of feed screw nut, spherical crown shape, spherical or analogous shape, they can be embedded into deflection in described dead slot, thus in the time that feed screw nut moves linearly along leading screw these type exterior features can corresponding to the dead slot being reversed with circular arc by these type exterior features deflection or move in described dead slot by radial clearance in described dead slot.Can have an external diameter at these these type exterior features, this external diameter adapts to the arc-shaped structure of dead slot and adapts to feed screw nut and the relative torsion of inclined plane ring, and therefore their mutual shapes are reversed in locking manner and each other very close to each otherly in the time of adjustment process again.Verified, with wide interactive two dead slots of two types be favourable, wherein, also these type exterior features can be arranged on inclined plane ring and by these dead slots and be arranged on feed screw nut.Self-evident, feed screw nut on leading screw anti-torsion mobile.The lead of screw thread of design leading screw and feed screw nut, makes control gear self-locking and works like this.Can make on the other hand lead of screw thread adapt to desired inclined plane ring torsion angle, inclined plane ring should turn over this torsion angle in the time of adjustment process again.
In order to reverse, make control gear and torsion device shape mutual interaction effect in locking manner in adjusting situation again described in control gear control.At this advantageously, control gear is fixed on clutch housing, therefore between erecting stage, with the clutch housing of lever system and control gear with can be used as separate module with the platen of ramp system and separate assembling.In the time of two modules of assembling, there is described leading screw and contact in reclining with a control piece with control gear with the torsion device of the driving wheel arranging without relative rotation thereon.Driving wheel has circumference type exterior feature for this reason, for example, on excircle, or has the tooth distributing in the more minor radius reducing in the axial direction on circumference, and these teeth are sealed and can deviate from platen to zigzag fashion and form in order to form better with the shape of control gear.In adjusting situation again, the ratchet being arranged on control gear is embedded in this circumference type exterior feature, this ratchet to move up towards platen side and drives driving wheel in order to be adjusted in again, make thus leading screw reverse and feed screw nut is axially moved on leading screw, this feed screw nut make again inclined plane ring with respect to platen to turn over a predetermined value with the velocity ratio of its coordination thus and to be responsible for compensating in the axial direction the error spacing producing as the sinking of the friction plate of friction clutch or other parts due to friction disc wear and/or due to other effect.Advantageously verified, the ratchet of described control gear contacts with the circumference type exterior feature of driving wheel under the condition of preload.In addition can be advantageously, the module with platen has been carried out preliminary adjustment for clutch driven plate to be used.
According to design of the present invention, only have in the time there are the wearing and tearing that will be compensated, just realize shape between control gear and torsion device sealed.This point realizes like this, according to the distance between clutch cover and platen, to set up shape between the ratchet of control gear and the circumference type exterior feature of driving wheel according to displacement sealed.At this control gear with pawl axis to being positioningly received on clutch cover, and the live axle of torsion device upwards along with wearing and tearing increase and away from ratchet.Design like this spacing between ratchet and driving wheel at this, ratchet in the time not wearing and tearing is leaned under preloading on the excircle of described circumference type exterior feature, and exceed vertically the wide seamed edge of a type, a for example tooth top away from moving in the axial direction constantly at platen, thereby ratchet is locked on the wide heel of type, for example heel, in the moving direction towards platen, is formed on thus shape between ratchet and circumference type exterior feature sealed.If open now friction clutch, that is, reduce the impacting force of lever system, because the reposition force of leaf spring makes platen and makes thus the torsion device with leading screw and driving wheel move against ratchet, because described shape is sealed, driving wheel is reversed and ramp system is reversed thus.At ratchet, not locking in the situation that, ratchet slides along described excircle in the time of each separation process.At this such accumulator between design platen and clutch housing, make in the time that platen is shifted to the disengaging configuration of friction clutch in the situation that driving wheel blocks, the ratchet being locked in driving wheel is taken in the direction towards disengaging configuration.Make for this reason ratchet with respect to housing shaft to flexibly received, even if therefore friction clutch still can be opened reliably in the time that controlling device is blocked again.
According to favourable embodiment, control gear can by one distolateral that be connected with clutch housing, flexible in platen direction and formed by elastic element pretension, that there is ratchet.At the elastic constants of this such design flexibility element, make elastic element in the time that platen resets under common condition, in adjusting situation again, be responsible for the torsion of driving wheel, but in the time can't realizing torsion, for example due to friction plate also in frictional fit and can not realize reverse time, elastic element overcomes the flexibly tensioning of its spring constant, and this causes the raising that preloads and the travelling backwards of ratchet.Once ramp system can be reversed, this raising preload reduce and driving wheel driven and made thus ramp system reverse.Verified at this: elastic element is preloaded and leans against an axial stop Shangdi and be positioned at its initial position in an advantageous manner, and this backstop is determined on a reproducible position ratchet.Therefore, at least can be by the rigidity of elastic element, for making, ramp system is reversed necessary power, the coordination of the rigidity of the accumulator that works between platen and clutch housing, in the time that lever system impacting force unloads---in the time that friction clutch is opened---and occurring that whens wearing and tearing makes to cause reliably in the sealed ratchet of shape with circumference type exterior feature the torsion of driving wheel, even regulate again block in the situation that starting, first elastic element intermediate storage for regulate again energy time.
Also verified, can be advantageously, limiting friction clutch regulates displacement during opening again.That in this way can predetermined one determines regulates displacement again.Particularly advantageously, this displacement and lever system the displacement of process relevant.In the time that can being advantageously exceeded by this lever system process, predetermined displacement in the time that lever system is unloaded one, this in the direction of platen dorsad, takes dynamic elasticity element by lever system.Elastic element stops in the time that this displacement is exceeded at once by ratchet role thus.Another advantage of cancelling again regulating action is the overload of leaf spring in the time that torsion device and/or ramp system are blocked or be difficult to rotate, and this overload can suppress or reduce the movement in the time opening friction clutch of platen.Under the simple scenario of this displacement restriction regulating again, can make the lever part axial action of erectting take dorsad dynamic elasticity element on elastic element and axially platen.Can on this lever part and/or elastic element, construct a surface of contact or a backstop for this reason.Another embodiment can stipulate, lever system contacts in reclining with second backstop in the time that described displacement is exceeded, wherein this first backstop and this second backstop are spaced apart with predetermined distance each other, axially take to employ in the first backstop of elastic element and also take thus the elastic element leaning against in the first backstop thus by taking the second backstop.Can be advantageously at this, these two backstops are arranged on one and can overcome on the member moving as land used of an accumulator on axially with respect to clutch housing.This accumulator can be also described elastic element, therefore can show two backstop functions by enough parts of very few number, show control gear in other words and comprise its displacement limit device.
Accompanying drawing explanation
Explain in detail the present invention by means of Fig. 1 to 11.In accompanying drawing:
Fig. 1 to 3 shows out the separation process of friction clutch in the adjusting situation again of not wearing and tearing,
Fig. 4 to 6 shows out friction clutch in the separation process having in wearing and tearing adjusting situation again,
Fig. 7 shows out friction clutch, has the new operation point after wearing and tearing regulate again,
Fig. 8 illustrates friction clutch embodiment's view, has wherein taken off lever system,
Fig. 9 illustrates Fig. 8 embodiment's details with sectional view,
Figure 10 illustrates friction clutch embodiment's partial section, and
Figure 11 is illustrated in during friction clutch separation process the plotted curve of force characteristic between each accumulator parts.
Embodiment
Fig. 1 is illustrated in the controlling device again 1 of the friction clutch under closed state with sectional view letter.Utilize without relative rotation and axially platen 3 that unshowned accumulator is connected as leaf spring clamped with distance 5 with respect to the compression plate 4 arranging permanently with housing at this and clutch housing 2, the thickness of the friction plate that this distance is equivalent to unshowned clutch driven plate in clamped condition, this clamped condition represents by operation point 6.Platen 3 loads impacting force by the lever system 7 that can be bearing in to deflection on clutch housing 2, and the size of this impacting force is utilized and unshownedly measured for the piece-rate system of handling friction clutch on the opposite side of lever system.Relate in an illustrated embodiment the so-called pressing formed type friction clutch for example, with double-arm lever system 7, a belleville spring, this lever system shown in friction clutch closed state under be not loaded and loaded by piece-rate system under open mode.Therefore under closed state, the maximum impacting force of lever system is applied on compression plate.Between lever system 7 and platen 3, ramp system 8 is set, it in the example shown by have be distributed on circumference and in a circumferential direction the inclined plane ring 9 on inclined-plane (Rampen) 11 of orientation form, these inclined-planes are supported in inclined surface 10 that process in platen, corresponding with these inclined-planes.Therefore, in the time that reversing in corresponding direction with respect to platen 3, strengthens inclined plane ring 9 distance between lever system 7 and platen 3.If diminish and therefore change operation point 6 because wearing and tearing make distance 5, can maybe should carry out this also referred to as the increasing regulating again or wearing and tearing regulate again of this distance, distance 5 diminishes and the result that therefore changes operation point 6 is: for closed friction clutch, lever system 7 occupies a position having changed, and for the separation process of friction clutch, due to the force characteristic of lever system, the Separating force that has caused changing on split displacement, causes the Separating force increasing mostly.
Described torsion system 11 is for this inclined plane ring is reversed, and this torsion system makes inclined plane ring 9 turn over a predetermined angle in unshowned mode here in the time there is adjusting condition again.For this reason, once wearing and tearing be detected by control gear, control gear 12 is just controlled torsion device.Regulate again and again displacement in order to obtain, torsion device has driving wheel 13, this driving wheel has circumference type exterior feature 14, this circumference type exterior feature for example can be made up of the tooth being distributed on circumference, control gear 12 for driving wheel 13 is reversed by one axially movable, be embedded into these teeth for the ratchet 15 that regulates again platen 3.
The elastic element 16 that described control gear 12 is clamped on clutch housing 2 on distolateral by one forms, it is clamped at towards platen 3 ground with respect in the fixing backstop 17 of housing and at the distolateral ratchet 15 that carries, this ratchet is clamped on described circumference type exterior feature.On this external elastic element 16, backstop 18 is set, it can produce to recline with lever system 7 and contacts and make elastic element 16 its stress of opposing leave in the axial direction backstop 17 and make thus ratchet 15 leave circumference type exterior feature 14 in the large distance of opening of friction clutch.
Fig. 2 is illustrated in the controlling device again 1 of the Fig. 1 under the state partly separating, and the friction of for example having cancelled friction plate under this state is sealed.In this view, also do not produce wearing and tearing, therefore ratchet 15 the same 15 does not have shape to be embedded in locking manner in circumference type exterior feature 14 with in the basic status of friction clutch of the closure of Fig. 1.But when during opening friction clutch, platen 3 lifts from operation point 6, ratchet 15 slides along circumference type is wide.Lever system 7 only contacts in reclining with backstop 18 in the part separated state of friction clutch.
If friction clutch further separates with respect to Fig. 2, as shown in Figure 3, lever system 7 makes the elastic element 16 that contacts with this lever system by backstop 18 move away backstop 17 together with vertically.Because platen 3---axially moves by the accumulator working between platen and clutch housing 2---with elastic element 16 and moves up in identical side now, the relative movement that is fixed on the driving wheel 13 on platen 3 and be fixed between the ratchet 15 on elastic element 16 reduces, depending on the axial displacement ratio between lever system 7 and platen or depending on the difference between backstop radius and the inclined plane ring of backstop 18, the pause of this relative movement will be caused.Under the state separating completely, platen is arranged in the disengaging configuration 19 from operation point maximum spacing.Self-evident, under the predetermined radius of inclined plane ring, corresponding axial displacement can correspondingly be adjusted by the radius of selecting lever 18.Therefore taking by selecting backstop 18 to produce the displacement restriction of ratchet 15 with respect to the length of the axial length of ratchet 15 of elastic element 16.But shown in the friction clutch not regulating again in state, this does not affect, because ratchet slides and not reach shape sealed along circumference type wide 14.Therefore,, during for each clutch operating of the friction clutch not regulating again, ratchet 15 is upward sliding or down sliding on the circumference type exterior feature of driving wheel 13, and can not form with the shape of driving wheel 13 sealed.
As shown in Figure 4, in the position at friction clutch with maximum impacting force closure, distance 5 reduces, and friction clutch, not having the operation point 6 under abrasion condition to move on in abration position 20, consequently, makes platen 3 axially upper away from clutch housing 2 thus.Obtain thus the decline of the position shown in the relative dotted line of surface of contact 21 of lever system 7 with the lever system force characteristic that changes.In order to eliminate this situation, must detect state of wear and trigger and control described torsion device by control gear 12.According to the present invention, detect whether occur wearing and tearing by the axial displacement relation between ratchet 15 and driving wheel 13 or position relationship.; if there is the difference displacement between the ratchet 15 causing due to wearing and tearing and driving wheel; ratchet 15 in the time that friction clutch is closed, just lock along wide 14 skews of circumference type and after overcoming a type exterior feature seamed edge 22 circumference type exterior feature 14 one radially in least part and with driving wheel 13, to form shape sealed, the preparation that the sealed conduct of this shape regulates again.This circumference type exterior feature can be made up of radial protrusion and type exterior feature radially that be recessed into, that replace in drive wheel circumferences applicable mode.For example, at the circumference type exterior feature 14 that is distributed in the tooth 24 on circumference with saw type exterior feature that has shown in this schematic diagram.Self-evident, other type exterior feature is also favourable, and driving wheel can be configured to fan-shaped, as long as be enough for whole regulation range again.In addition except shown in the circular contour of driving wheel 14 can use other profile, they realize circumference type exterior feature more uniformly from regulating step again to regulating step again, its mode is for example long-round-shape of driving wheel or forms elliptically, be configured to if desired the section of these geometrical shapies, therefore follow regulate again time, can make ratchet 15 cause due to circular arc, more even with mating of tooth further away from each other or type exterior feature.
Fig. 5 illustrates adjustment process again, and it is connected the regulatory demand again detecting of Fig. 4, until the friction clutch that part separates.In the time that lever system 7 impacting forces weaken, by moving axially of the platen 3 causing by the decline preloading axially being caused as leaf spring by the accumulator of pretension between platen 3 and clutch housing 2, driving wheel 13 is also moved axially with respect to elastic element 16, this elastic element is preloaded in backstop 17 and before its rigidity is overcome and abuts in regularly in backstop 17 always.Ratchet 15 moves tooth 25 current and that this ratchet formation shape is sealed in a circumferential direction around the spin axis of driving wheel 13 thus, and this driving wheel rotates and by transmission device, inclined plane ring 9 reversed thus.Distance by this rotation increase and belleville spring and make the home position of belleville spring close to relative platen.If in the displacement range of 3 processes of platen, for example, in the time that motion starts,---at this moment rub sealed also do not fully phase out and therefore need too large power to make inclined plane ring rotation---should not realize and regulating at once, can make elastic element 16 be less than the clamping force for reversing inclined plane ring by lifting in backstop 17 and needing only for the power that driving wheel 13 is reversed, just regulate again, its mode be utilize the energy stored in elastic element make to be pressed more approach clutch housing driving wheel 13 reverse, wherein realize and make driving wheel 13 turn over a predetermined angle completely by the elimination of the displacement between elastic element 16 and backstop 17.
If the single compensation step after formation shape is sealed is for regulating not completely again, make upper while once engaging in the time that friction clutch is closed, ratchet 15 again with next, follow that to form shape at current tooth 25 next tooth 26 below sealed and regulate again while once separating upper.If this compensation process is enough, ratchet leans against on tooth 26 and in separation process and slides on this tooth at radially outer in the time engaging friction clutch, until reach again the wear limit regulating again for next time.Repeat this adjustment process again, until reach absolute wear limit and the essential clutch driven plate of changing of friction plate.In order to be matched with new friction plate thickness, can make in principle torsion device reversing, if at this moment with sealed being cancelled of shape of ratchet 15.
If torsion device is stuck in the time regulating again, can not have a negative impact to the function of friction clutch.But the rigidity of such design flexibility element 16, make to be less than than the accumulator by between clutch housing 2 and platen 3 for mobile this platen applied force in order to make ratchet 15 depart from the required power of backstop 17, although therefore do not regulate again, still can handle friction clutch.
Fig. 6 illustrates the principle that regulates again displacement for the friction clutch restriction separating completely.One be enough and described after displacement at Fig. 5 for frictional fit separately in principle what exceed platen 3, reach a maximum separation displacement always.For this reason, there is the desired axial relative movement of preventing ratchet 15 and driving wheel 13 during regulating again displacement or the continuation of the adjustment process again of adjusting angle is extended in the axial direction again opening procedure by lever system 7 exceeding, its mode is: on lever system 17 is axial, take the backstop 18 contacting in reclining with lever system 7, make thus elastic element lift from backstop 17.Therefore realize the skew in the same way of lever system 7, elastic element 16 and ratchet 15 and platen 3 and driving wheel 13, no longer can regulate again in the continuation displacement in clutch housing 2 directions at platen 3 thus.
Fig. 7 is illustrated in the controlling device again 1 in the closed state being loaded with maximum impacting force by lever system 7 of platen 3.Original operation point 6 has changed to new operation point and has adapted to the new distance 5 with thinner friction plate, and this new operation point is corresponding to original abration position 20.Between lever system 7 and platen 3, set up larger distance by spin canting ring 8 at this, this larger distance makes lever system turn back to its home position.With the elastic element 16 of ratchet 15 occupied its home position and now radially outer lean against and in sense of rotation, follow original when on nipper 25 tooth 26 below.
Fig. 8 illustrates the favourable topology example of the platen 27 with ramp system 28 and torsion device 29.Platen 27 has known for being arranged on the parts on clutch housing, for example that be shaped and that reprocessed if desired, for fixing accumulator as acceptance division 30 leaf spring, that there is perforate 31, these acceptance divisions allow on clutch housing without relatively rotating but the connection that axially can be offset, wherein realize by this way preloading of accumulator, make platen 27 doing that land used is closed by the power effect of lever system and turning back in the position of opening by the relexation of accumulator against accumulator after eliminating the impacting force causing by lever system.Perforate 32 can utilize in many aspects and for example can be for connecting the additional quality that axially can be offset with respect to platen as vibration damping quality.On platen 27, on given radius, process the inclined surface 33 distributing on circumference, they in the view of platen 27, can in Forging Technology, in blank, be shaped and can smear metal by fine finishing.Also can selectively, for example, on platen, place and fixing rolled-up stock or working of plastics.Corresponding to inclined surface 33 ground, the inclined plane ring 34 of respective diameters is placed in inclined surface 33 by corresponding inclined-plane 35 on circumference, this inclined plane ring has the surface of contact for lever system.Inclined plane ring 34 can be at least for assembling anticreep land and be fixed in inclined surface 33.In the simplest situation, after placing inclined plane ring, assemble at once lever system and clutch housing.
Fig. 9 illustrates the details of the torsion device 29 of Fig. 8 with sectional view, it has leading screw 38, feed screw nut 40, driving wheel 41 and reception unit 37.Torsion device 29 produces the straight line longitudinal movement of feed screw nut 40 in the time that leading screw 38 rotates.And inclined plane ring 34 rotation on platen 27 in circular motion.In order to compensate the work angle of extending between external form wide 43 and the dead slot 44 of inclined plane ring 34 of feed screw nut 40 on whole adjusting angle again, they are correspondingly shaped with being separated from each other.On the one hand this external form exterior feature is provided with the radius 45 of the angle that adapts to variation on its end, and dead slot 44 has gap 46 on the other hand, and it allows this external form exterior feature to be embedded in obliquely in described dead slot along with the increase of adjusting angle again.
Figure 10 illustrates that the embodiment of friction clutch 47 is along the partial section of its spin axis 48, and half controlling device 49 is wherein only shown.Friction clutch 47 is made up of clutch housing 50, and in clutch housing, platen 27 utilizes in this sectional view sightless accumulator without relatively rotating and axially can being offset and being received.In this external clutch housing 50, received the lever system 51 as belleville spring 52, it has the disc spring tongue 53 of inner radial, and these disc spring tongue can be moved vertically by unshowned piece-rate system.Shown embodiment is pressure type friction clutch 47, and it separates when by pressure-loaded disc spring tongue 53.For this reason, belleville spring 52 utilizes two steel wire rings 54,55 by unshowned, the rivets that these two rings mutually clamp can be bearing on clutch housing to deflection under the condition that forms double-arm lever, wherein the power edge 56 of radially outer clamps with respect to unshowned compression plate platen 27 under the condition that clamps same unshowned friction plate.Between platen 27 and belleville spring 52, clamp and have an inclined plane ring 34 for this reason, this inclined plane ring as illustrated in fig. 8 with platen 27 and with torsion device 29 co-operation with driving wheel 41.
Figure 11 illustrates plotted curve, wherein illustrates qualitatively that the power of each memory unit changes the possible shape about platen stroke.Curve 65 represents the power of the accumulator between platen and clutch housing, and it for example, is illustrated in multiple times with multiple, three forms that are distributed in the leaf spring on circumference.The variation of power on platen stroke declines slightly.Its absolute force is higher than ratchet power effective, that represent with curve 66, so that assurance friction clutch is opened in the time that the impacting force of lever system weakens.Effectively ratchet power is come predetermined by the pretension of elastic element.
List of numerals
1 controlling device 8 ramp system again
2 clutch housing 9 inclined plane rings
3 platen 10 inclined surface
4 compression plate 11 torsion devices
5 spacing 12 control gear
6 operation point 13 driving wheels
7 lever system 14 circumference type exterior features
15 ratchet 45 radiuses
16 elastic element 46 gaps
17 backstop 47 friction clutches
18 backstop 48 spin axiss
19 disengaging configuration 49 controlling devices again
20 abration position 50 clutch housings
21 surface of contact 51 lever systems
Wide seamed edge 52 belleville springs of 22 types
23 least part 53 disc spring tongue
24 tooth 54 steel wire rings
25 tooth 55 steel wire rings
26 tooth 56 power edges
27 platen 57 control gear
28 ramp system 58 elastic elements
29 torsion device 59 ratchets
30 acceptance division 60 backstops
31 perforate 61 bearing pins
32 perforate 62 heads
33 inclined surface 63 backstops
34 inclined plane ring 64 surface of contact
35 inclined-plane 65 curves
36 anchor ring 66 curves
37 reception unit 67 curves
38 leading screw 68 curves
39 threads of lead screw 69 strokes
40 feed screw nuts
41 driving wheels
42 circumference type exterior features
43 external form exterior features
44 dead slots
Claims (18)
1. friction clutch (47), at least comprise a clutch housing (2, 50), with one relative to this clutch housing without relative rotation but the platen (3 limitedly moving on can be axially, 27), this platen can be bearing in this clutch housing (2 by one, 50) lever system (7 on, 51) be fixedly installed on this clutch housing (2 with respect to one, 50) compression plate on is in the case of clamping the friction plate of a clutch driven plate for this friction clutch of open and close (47) axially moves, it is characterized in that, according to compression plate and platen (3, 27) variation of the spacing (52) between realizes a torsion device (11, 29) with a control gear (12, 57) shape between is sealed, this torsion device makes one to be arranged on platen (3, 27) with this lever system (7, 51) ramp system (8 between, 28) reverse, for compensating at platen (3, 27) with lever system (7, 51) the error spacing producing in the time of friction disc wear between, this control gear utilizes sealed this torsion device (11 of controlling of this shape, 29), this torsion device (11, 29) by this control gear (12, 57) in the time that opening, this friction clutch (47) reverses, wherein, described torsion device (11, 29) can reverse and be received in this platen (3 by one, 27) leading screw (38) on forms, this leading screw is by a control gear (12, 57) drive and receive one without the feed screw nut (40) reversing, this feed screw nut shape be coupled in locking manner one circlewise form, can be with respect to being arranged on this platen (3, 27) inclined surface (10 on, 33) ramp system (8 of reversing, 28) in.
2. friction clutch (47), at least comprise a clutch housing (2, 50), with one relative to this clutch housing without relative rotation but the platen (3 limitedly moving on can be axially, 27), this platen can be bearing in this clutch housing (2 by one, 50) lever system (7 on, 51) move axially in the case of clamping the friction plate of a clutch driven plate with respect to a compression plate that lid arranges regularly relatively, wherein at this clutch housing (2, 50) with this platen (3, 27) accumulator working on axial between works, it is characterized in that, according to compression plate and platen (3, 27) distances of one between (5) variation realizes a torsion device (11, 29) with a control gear (12, 57) shape between is sealed, this torsion device makes one to be arranged on platen (3, 27) with this lever system (7, 51) ramp system (8 between, 28) reverse, for compensating at platen (3, 27) with lever system (7, 51) the error spacing producing in the time of friction disc wear between, this control gear utilizes sealed this torsion device (11 of controlling of this shape, 29), this torsion device (11, 29) by this control gear (12, 57) at this platen (3, 27) by this lever system (7, 51) unloading and this platen (3, 27) by described at platen (3, 27) with this friction clutch housing (2, 50) accumulator working between and being reversed during mobile, wherein, described torsion device (11, 29) can reverse and be received in this platen (3 by one, 27) leading screw (38) on forms, this leading screw is by a control gear (12, 57) drive and receive one without the feed screw nut (40) reversing, this feed screw nut shape be coupled in locking manner one circlewise form, can be with respect to being arranged on this platen (3, 27) inclined surface (10 on, 33) ramp system (8 of reversing, 28) in.
3. friction clutch as claimed in claim 1 or 2 (47), is characterized in that, leading screw (38) and feed screw nut (40) form the torsion device (11,29) of self-locking.
4. friction clutch as claimed in claim 1 or 2 (47), is characterized in that, described feed screw nut (40) can articulatedly swingingly be coupled in described ramp system (28).
5. friction clutch as claimed in claim 1 or 2 (47), it is characterized in that, described leading screw (38) has a driving wheel (13,41), this driving wheel has at least one circumference type exterior feature (14,42), described control gear (12,57) in the time there is friction disc wear, by a ratchet being preloaded (15,59), for the torsion of this driving wheel (13,41), shape is coupled in this circumference type exterior feature in locking manner.
6. friction clutch as claimed in claim 5 (47), is characterized in that, in the time not there is not friction disc wear, described ratchet (15,59) is directed in this circumference type exterior feature (14,42) outside.
7. friction clutch as claimed in claim 6 (47), is characterized in that, described control gear (12,57) is fixed on described clutch housing (2,50).
8. friction clutch as claimed in claim 5 (47), it is characterized in that, described control gear (12,57) by one at distolateral and described clutch housing (2,50) connect, towards described platen (3,27) flexible in direction and be preloaded, form with the elastic element (16,58) of a ratchet (15,59).
9. friction clutch as claimed in claim 8 (47), is characterized in that, described ratchet (15,59) is radially clamped with respect to described circumference type exterior feature (14,42).
10. friction clutch as claimed in claim 8 (47), is characterized in that, described elastic element (16,58) towards platen (3,27) direction upper support in one first backstop (17,60).
11. friction clutches as claimed in claim 8 (47), it is characterized in that, described elastic element (16,58) rigidity, for making described ramp system (8,28) reverse essential power and at described platen (3,27) with described clutch housing (2,50) rigidity of the accumulator working between is coordinated mutually, make at described lever system (7,51) impacting force unloaded and in the time of friction disc wear ratchet (15,59) with described circumference type exterior feature (14,42) in the time that shape is sealed, cause a torsion of described driving wheel (13,41).
12. friction clutches as claimed in claim 8 (47), it is characterized in that, one at described lever system (7,51) while being exceeded by the predetermined displacement of this lever system process when unloaded, described elastic element (16,58) taken in the direction of described platen (3,27) dorsad by described lever system (7,51).
13. friction clutches as claimed in claim 12 (47), it is characterized in that, described elastic element (16,58) upper in one first backstop (17) towards platen (3,27) direction upper support, described lever system (7,51) after being exceeded, described displacement contacts in reclining with one second backstop (18), wherein, the first backstop and the second backstop (17,18) are opened with a predetermined intervals mutually.
14. friction clutches as claimed in claim 13 (47), is characterized in that, described two backstops are arranged on one and overcome on the bearing pin moving as land used (61) of an accumulator on can be axially with respect to described clutch housing (2,50).
15. friction clutches as claimed in claim 14 (47), is characterized in that, described accumulator is described elastic element (58).
16. friction clutches as claimed in claim 1 or 2 (47), is characterized in that, described lever system (7,51) is a belleville spring (52).
17. friction clutches as claimed in claim 1 or 2 (47), is characterized in that, described friction clutch (47) is a pressing type clutch.
18. friction clutches as claimed in claim 1 or 2 (47), is characterized in that, described friction clutch is a pull type clutch.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007052312 | 2007-10-31 | ||
| DE102007052312.4 | 2007-10-31 | ||
| PCT/DE2008/001663 WO2009056092A1 (en) | 2007-10-31 | 2008-10-09 | Friction clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101952613A CN101952613A (en) | 2011-01-19 |
| CN101952613B true CN101952613B (en) | 2014-06-04 |
Family
ID=40242596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880024846.1A Active CN101952613B (en) | 2007-10-31 | 2008-10-09 | Friction clutch |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101952613B (en) |
| DE (2) | DE112008002711B4 (en) |
| WO (1) | WO2009056092A1 (en) |
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- 2008-10-09 CN CN200880024846.1A patent/CN101952613B/en active Active
- 2008-10-09 DE DE112008002711.0T patent/DE112008002711B4/en active Active
- 2008-10-09 DE DE102008051100A patent/DE102008051100A1/en not_active Withdrawn
- 2008-10-09 WO PCT/DE2008/001663 patent/WO2009056092A1/en active Application Filing
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| CN1089695A (en) * | 1992-12-22 | 1994-07-20 | 卢克摩擦片和离合器有限公司 | Friction clutch |
| FR2753503A1 (en) * | 1996-09-17 | 1998-03-20 | Valeo | Friction clutch for motor vehicles |
| US6371269B1 (en) * | 1999-05-18 | 2002-04-16 | Mannesmann Sachs Ag | Thrust plate assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101952613A (en) | 2011-01-19 |
| DE112008002711A5 (en) | 2010-07-08 |
| WO2009056092A1 (en) | 2009-05-07 |
| DE102008051100A1 (en) | 2009-05-07 |
| DE112008002711B4 (en) | 2020-01-02 |
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