CN101952613A - Friction clutch - Google Patents
Friction clutch Download PDFInfo
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- CN101952613A CN101952613A CN2008800248461A CN200880024846A CN101952613A CN 101952613 A CN101952613 A CN 101952613A CN 2008800248461 A CN2008800248461 A CN 2008800248461A CN 200880024846 A CN200880024846 A CN 200880024846A CN 101952613 A CN101952613 A CN 101952613A
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- platen
- clutch
- friction clutch
- lever system
- control gear
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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, at least comprising a clutch housing having a pressure plate that can be displaced thereon non-rotatably and axially limited, wherein said pressure plate can be subjected by a lever system supported on the clutch housing to a contact force that is counter to the effect of energy accumulators acting between the clutch housing and the pressure plate with respect to a pressure plate fixed on the cover, while tensioning the friction linings of a clutch plate. To this end, wear of the friction linings is compensated for in that a resulting first distance between the pressure plate and lever system is compensated for by way of a rotation of a ramp system, which is disposed between the pressure plate and lever system, using a rotational device if, while the pressure plate is subjected to a maximum force by the lever system, a second predetermined distance is determined between the pressure plate and clutch housing, said second distance exceeding a predetermined value, and a rotation occurs during an alleviation of the pressure plate by the lever system and a displacement of the pressure plate occurs by means of the energy accumulators active between the pressure plate and the clutch housing.
Description
Technical field
The present invention relates to a kind of friction clutch, has a compression plate and a platen that is used for setting up frictional fit can be axially limited with respect to this compression plate mobile, that load by a lever system with respect to the friction plate of a clutch driven plate, wherein, according to wearing and tearing, by the adjusting again of adjusting the realization friction clutch again of this lever system.
Background technique
The known friction clutch that has again 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 because the unfavorable variation that wearing and tearing cause and regulate again according to this impacting force.Also can be selectively, try to achieve the clutch housing that when the friction disc wear of clutch driven plate, produces and the error spacing between the lever system and revise according to the error spacing.In order to revise, make the compensation mechanism such as ramp system such (Rampensystem) or the screw thread rotation that are arranged between platen and the lever system at this.Because vibration or quality and inertia effects, the rotation of not expecting may cause overcompensation or not enough compensation.
Summary of the invention
Therefore the objective of the invention is, propose a friction clutch, it has a controlling device more solid, that can simply make and adjust.
This purpose is achieved by friction clutch on the one hand, it is made up of a clutch housing at least, this clutch housing has one not to be had in relative rotation but the platen that axially can limitedly move relative to this clutch housing, this platen can be moved with respect to the platen that is fixedly installed on the clutch housing in the axial direction by a lever system that is bearing on the clutch housing, to clamp the friction plate of clutch driven plate, wherein, realize that according to the variable in distance between compression plate and the platen shape between a torsion device and the control gear is sealed, this torsion device reverses the ramp system such that is arranged between platen and the lever system, be used to compensate the platen of generation when wearing and tearing and the error spacing between the lever system, this control gear utilizes sealed this torsion device of controlling of shape, and this torsion device utilize this control gear at platen when lever system moves, for example when opening, friction clutch twists.
On the other hand, same purpose is achieved by corresponding friction clutch, its mode is, this torsion device by this control gear this platen by this lever system unloaded and at this platen by described at the accumulator that works between platen and this friction clutch housing, for example leaf spring and reversed during mobile.
When controlling device is opened friction clutch more relatively, realize the compensation of wearing and tearing in this way on the one hand, in described controlling device again, described control gear or other memory unit as accumulator or displacement transducer open during the friction clutch or before the intermediate storage wearing and tearing spacing of trying to achieve or error spacing and when 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 the contact with torsion device when in fact having determined wearing and tearing.Therefore can get rid of the unnecessary source of trouble that influences torsion device by control gear.
Refer to a leverage about lever system, it according to friction clutch as the form of implementation of pressure type or pull type clutch and the configuration condition lower support that fixes on single armed or double-arm lever 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, platen is clamped in the axial direction with a compression plate under the condition of the friction plate formation frictional fit of formation and clutch driven plate, and this compression plate can be configured to simple substance amount flywheel or be the secondary parts of a double mass flywheel.Self-evident, the principle of controlling device again that is proposed also can be used for so-called pressing formed type or pulling type friction clutch in an advantageous manner when corresponding coupling, wherein, if the lever system that is bearing on the clutch housing is utilizing one to react under the condition of active force of breaking force and pressing on the direction of platen or drawing, then this pressing formed type or pulling type friction clutch be by utilizing the open mode of impacting force from no active force, and to set up friction sealed with the friction plate of clutch driven plate.
In a preferred form of implementation, described lever system can be made of belleville spring, and it utilizes the power edge of radially outer to utilize disc spring tongue axially to be loaded as lever as accumulator and in inner radial.For platen is resetted by the impacting force that weakens during separation process, the accumulator such as the leaf spring that work against described impacting force on being arranged on axially between clutch housing and the platen, they move platen towards clutch housing when impacting force weakens during the friction clutch separation process.According to thought of the present invention, at least a portion of the reposition force of these accumulators is used for friction clutch regulates again, and wherein these accumulation of energys correspondingly are designed size at this process.
At this torsion device is received on the platen, for example can makes the riveted joint of a tabular holding device and platen, utilize tabular holding device to receive torsion device.Described torsion device can constitute by this way, makes the power that axially is delivered on the torsion device by control gear utilize a transmission device to be converted to the power that acts on the Zhou Fangxiang on the ramp system such.Advantageously, torsion device can be a leading screw that rotatably is received on the platen, and it drives and receive a feed screw nut by control gear, and its shape is embedded in the ramp system such of an annular formation sealedly.In this this ramp system such for example can be an inclined plane ring, it have some axially go up constitute, be distributed in the inclined-plane on the circumference, this inclined plane ring and inclined surface interaction effect corresponding shaping on platen or that install, therefore on the inclined-plane when on the direction of the opposite inclined-plane lift of the direction of inclined plane ring and inclined surface, reversing, axial height increases.The dead slot that described inclined plane ring has 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.Can be arranged on the type exterior feature of on the feed screw nut, that for example go out, spherical crown shape, spherical or analogous shape by the material forming of feed screw nut at this matching mechanism, but be embedded in the described dead slot to their deflection, these type exterior features can be corresponding to the dead slot ground that is reversed with circular arc by these type exterior features deflection or move in described dead slot by radial clearance in described dead slot when the leading screw straight line moves at feed screw nut thus.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 of inclined plane ring reversed, so the sealed ground of their mutual shapes and reversing when adjustment process more each other very close to each otherly.Verified, with wide interactive two dead slots of two types be favourable, wherein, also these type exterior features can be arranged on the inclined plane ring and with these dead slots and be arranged on the feed screw nut.Self-evident, feed screw nut is anti-on leading screw to be moved with reversing.The lead of screw thread of design leading screw and feed screw nut works with making the control gear self-locking like this.Can make lead of screw thread adapt to desired inclined plane ring torsion angle on the other hand, inclined plane ring should turn over this torsion angle when adjustment process again.
For by described the reversing of control gear control, make the sealed ground of control gear and torsion device shape under adjusting situation again interaction effect each other.At this advantageously, control gear is fixed on the clutch housing, and therefore between erecting stage, the clutch housing that has lever system and control gear can be used as separate module with the platen that has ramp system such and separates assembling.In assembling during two modules, have described leading screw and do not have the torsion device of the driving wheel of setting thereon with relatively rotating and be in to recline with a control piece with control gear and contact.Driving wheel has circumference type exterior feature for this reason, for example on excircle, has the tooth that distributes on the more minor radius that perhaps reduces in the axial direction on circumference, and these teeth are sealed and can deviate to zigzag fashion platen ground formation in order to form shape with control gear better.Under adjusting situation again, the ratchet that is arranged on the control gear is embedded in this circumference type exterior feature, this ratchet moves and drives driving wheel in order to be adjusted on the platen direction again, leading screw is reversed 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 compensation in the axial direction because friction disc wear and/or the error spacing that produces owing to the sinking of the friction plate of other effect such as friction clutch or other parts.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 at clutch driven plate to be used.
According to design of the present invention, have only when the wearing and tearing that will be compensated occurring, realize that just the shape between control gear and the torsion device is sealed.This point realizes like this, and is promptly sealed according to the distance between clutch cover and the platen, the shape of promptly setting up between the circumference type exterior feature of the ratchet of control gear and driving wheel according to displacement.This control gear with the ratchet axially locating be received on the clutch cover, and the live axle of torsion device upwards along with the increase of wearing and tearing away from ratchet.Spacing between this such design ratchet and driving wheel, make that ratchet leans on the excircle of described circumference type exterior feature under preloading when not wearing and tearing, and platen vertically away from constantly in the axial direction motion exceed the wide seamed edge of a type, a tooth top for example, thereby ratchet is locked on the wide heel of type, for example heel, sealed the shape that on the moving direction of platen, is formed between ratchet and the circumference type exterior feature thus.If open friction clutch now, that is, reduce the impacting force of lever system, then because the reposition force of leaf spring makes platen also the torsion device with leading screw and driving wheel be moved against ratchet, because described shape is sealed, driving wheel is reversed and ramp system such is reversed thus.Not under the situation of locking, ratchet slides along described excircle when each separation process at ratchet.At this such accumulator between design platen and the clutch housing, make that when platen is shifted to the disengaging configuration of friction clutch under the situation that driving wheel blocks, the ratchet that is locked in the driving wheel is being taken on the direction of disengaging configuration.Make for this reason ratchet with respect to housing shaft to flexibly being received, even so friction clutch when controlling device is blocked again, still can open reliably.
According to advantageous embodiments, control gear can by one distolateral that be connected with clutch housing, flexible on the platen direction and constituted by elastic element pretension, that have ratchet.Elastic constants at this such design flexibility element, make elastic element when platen resets, under adjusting situation again, be responsible for reversing of driving wheel under common condition, but in the time can't realizing reversing, for example also be in the time of to realize reversing in the frictional fit owing to friction plate, elastic element overcomes the flexibly tensioning of its spring constant, and this causes the raising that preloads and the travelling backwards of ratchet.In case ramp system such can be reversed, then preloading of this raising reduced and driving wheel is driven and ramp system such is reversed.Verified at this: elastic element in an advantageous manner its initial position by preload lean against on the axial stop and be positioned, this backstop is determined on a reproducible position ratchet.Therefore, at least rigidity that can be by elastic element, be used to make that ramp system such is reversed necessary power, the coordination of the rigidity of the accumulator that works between platen and clutch housing, when the lever system impacting force unloads---when friction clutch is opened---and when wearing and tearing occurring, make and be in the sealed ratchet of shape with circumference type exterior feature and cause reversing of driving wheel reliably, even regulate again under the situation about blocking in beginning, at first the elastic element intermediate storage be used for regulating again energy the time.
Also verified, can be advantageously, the displacement of adjusting again during the limiting friction clutch is opened.In this way can predetermined one displacement of determining of adjusting again.Particularly advantageously be, this displacement and lever system the displacement of process relevant.Can be advantageously take the dynamic elasticity element on by the direction of lever system when when lever system is unloaded, being exceeded at this at platen dorsad by this lever system process, predetermined displacement one.Elastic element stops when this displacement is exceeded at once by the ratchet role thus.Another advantage of cancelling again regulating action is the overload of leaf spring when torsion device and/or ramp system such are blocked or be difficult to rotate, and this overload can suppress or reduce the moving when opening friction clutch of platen.Under the simple scenario of this displacement restriction of regulating again, the lever part axial action that can make setting in taking the dynamic elasticity element dorsad on the 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 is in to recline with one second backstop when described displacement is exceeded and contacts, wherein this first backstop and this second backstop are spaced apart with predetermined distance each other, axially take first backstop of employing in elastic element and also take the elastic element that leans against on first backstop thus by taking second backstop thus.Can be advantageously at this, these two backstops are arranged on one and can overcome on axially on the member that moves as land used of an accumulator with respect to clutch housing.Therefore this accumulator also can be described elastic element, can show two backstop functions by enough parts of very few number, show control gear in other words and comprise its displacement limit device.
Description of drawings
Explain the present invention in detail by means of Fig. 1 to 11.In the accompanying drawing:
Fig. 1 to 3 letter illustrates the separation process of friction clutch under the adjusting situation again of not wearing and tearing,
Fig. 4 to 6 letter illustrates friction clutch in the separation process that has under the wearing and tearing adjusting situation again,
Fig. 7 letter illustrates friction clutch, has the new operation point after wearing and tearing are regulated 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 illustrate friction clutch embodiment partial section and
Figure 11 is illustrated in during the friction clutch separation process 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 the closed state with the sectional view letter.Do not have at this and clutch housing 2 and to relatively rotate ground and axially to utilize platen 3 that unshowned accumulator such as leaf spring be connected clamped with distance 5 with respect to the compression plate 4 that is provided with permanently with housing, this distance is equivalent to the thickness of friction plate in clamped condition of unshowned clutch driven plate, and this clamped condition is by operation point 6 expressions.But platen 3 by deflection the lever system 7 that is bearing on the clutch housing 2 load impacting forces, the size of this impacting force utilizes the unshowned piece-rate system that is used to handle friction clutch to measure on the opposite side of lever system.Relate to so-called have double-arm lever system 7, the pressing formed type friction clutch of a dish-shaped spring for example in an illustrated embodiment, this lever system shown in the friction clutch closed state under be not loaded and under open mode, load by piece-rate system.Therefore under closed state, the maximum impacting force of lever system is applied on the compression plate.Between lever system 7 and platen 3, ramp system such 8 is set, it in the example shown by have be distributed on the circumference and in a circumferential direction the inclined plane ring 9 on inclined-plane (Rampen) 11 of orientation form, these inclined-planes are supported on the inclined surface 10 that process in platen, corresponding with these inclined-planes.Therefore, the distance between increasing lever system 7 and the platen 3 when inclined plane ring 9 reverses on corresponding direction with respect to platen 3.If because wearing and tearing diminish distance 5 and therefore change operation point 6, then can maybe should carry out this being also referred to as of this distance regulates or the wearing and tearing increasing of adjusting more again, distance 5 diminishes and the result that therefore changes operation point 6 is: for the friction clutch of closure, lever system 7 occupies a position that has changed, and separation process for friction clutch, because the force characteristic of lever system,, promptly cause the Separating force that increases mostly separating the Separating force that has caused changing in the displacement.
Described torsion system 11 is used to make this inclined plane ring to reverse, and this torsion system makes inclined plane ring 9 turn over a predetermined angle when adjusting condition occurring again in unshowned mode here.For this reason, in case detect wearing and tearing by control gear, control gear 12 is just controlled torsion device.Regulate displacement again and again 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 of the tooth that is distributed on the circumference, and control gear 12 is embedded into these teeth for driving wheel 13 is reversed by ratchet 15 one axially movable, that be used for regulating again platen 3.
Described control gear 12 constitutes by an elastic element 16 that is clamped on distolateral on the clutch housing 2, it is clamped on the backstop 17 of fixing with respect to housing towards platen 3 ground and at the distolateral ratchet 15 that carries, this ratchet is clamped on the described circumference type exterior feature.On this external elastic element 16 backstop 18 is set, it can produce to recline and contact and leave backstop 17 in the axial direction and make ratchet 15 leave circumference type exterior feature 14 thus in big the opening apart from making elastic element 16 resist its stress of friction clutch with lever system 7.
Fig. 2 is illustrated in the controlling device again 1 of the Fig. 1 under the state that partly separates, and the friction of for example having cancelled friction plate under this state is sealed.In this view, also produce wearing and tearing, thus ratchet 15 with in the basic status of the friction clutch of closure of Fig. 1, the same 15 do not have shape to be embedded in the circumference type exterior feature 14 sealedly.But opening during the friction clutch platen 3 from the operation point 6 when lifting, ratchet 15 slides along the circumference type is wide.Lever system 7 only is in to recline with backstop 18 in the part separated state of friction clutch and contacts.
If friction clutch further separates with respect to Fig. 2, then as shown in Figure 3, lever system 7 makes by backstop 18 and moves away backstop 17 vertically with the contacted elastic element 16 of this lever system.Because present platen 3---axially by moving at the accumulator that works between platen and the clutch housing 2---is mobile on identical direction with elastic element 16, the relative movement that is fixed on the driving wheel 13 on the platen 3 and is fixed between the ratchet 15 on the elastic element 16 reduces, look between lever system 7 and the platen axial displacement than or decide on the backstop radius of backstop 18 and the difference between the inclined plane ring, will cause the pause of this relative movement.Under the state that separates fully, platen is arranged in the disengaging configuration 19 from the 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 elastic element 16 takes by selecting backstop 18 to produce the displacement restriction of ratchet 15 with respect to the length of the axial length of ratchet 15.But in state shown in the friction clutch of not regulating again, this is influence not, because ratchet slides and not reach shape sealed along circumference type wide 14.Therefore, during for each clutch operating of the friction clutch of not regulating again, ratchet 15 upwards slides on the circumference type exterior feature of driving wheel 13 or to lower slider, and can not form with the shape of driving wheel 13 sealed.
As shown in Figure 4, in the position of friction clutch with maximum impacting force closure, distance 5 reduces, and the operation point 6 of friction clutch under not having abrasion condition moves on in the abration position 20 thus, consequently, platen 3 is axially gone up away from clutch housing 2.Obtain the decline of the position shown in the surface of contact 21 relative dotted lines of lever system 7 thus with the lever system force characteristic that changes.In order to eliminate this situation, must detect state of wear and trigger the described torsion device of control by control gear 12.According to the present invention, concern to detect wearing and tearing whether occur by axial displacement relation between ratchet 15 and the driving wheel 13 or position.Promptly, if because ratchet 15 that wearing and tearing cause and the difference displacement between the driving wheel, then ratchet 15 is just locked radially in the least part and sealed with driving wheel 13 formation shapes of circumference type exterior feature 14, the preparation that the sealed conduct of this shape is regulated again along wide 14 skews of circumference type and after overcoming the wide seamed edge 22 of a type when friction clutch is closed.This circumference type exterior feature can be made of radial protrusion and type exterior feature that is radially recessed, that replace on drive wheel circumferences by the mode that is fit to.For example at the circumference type exterior feature 14 that is distributed in the tooth 24 on the circumference with saw type exterior feature that has shown in this schematic representation.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 a for example long-round-shape or constitute elliptically of driving wheel, be configured to the section of these geometrical shapies in case of necessity, therefore when the adjusting of following again, can make ratchet 15 since circular arc cause, more even with the coupling of further away from each other tooth or type exterior feature.
Fig. 5 illustrates adjustment process again, and it is connected the detected regulatory demand again of Fig. 4, up to the friction clutch of part separation.When lever system 7 impacting forces weaken, make driving wheel 13 also move axially with respect to elastic element 16 by the moving axially of platen 3 that causes by the decline that preloads that is axially caused by the accumulator of pretension such as leaf spring between platen 3 and clutch housing 2, this elastic element is preloaded on the backstop 17 and before its rigidity is overcome and abuts in regularly on the 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 belleville spring approach the home position of relative platen.If in the displacement range of 3 processes of platen,---at this moment rub sealed also do not fully phase out and therefore need too big power make the inclined plane ring rotation---should not realize regulating at once again for example in when beginning motion, as long as can make elastic element 16 by lifting and be used to make power that driving wheel 13 reverses on the backstop 17 less than the clamping force that is used to reverse inclined plane ring, just regulate again, its mode is to utilize the energy store in elastic element to make to be pressed to such an extent that more reverse near the driving wheel 13 of clutch housing, and wherein the elimination by the displacement between elastic element 16 and the backstop 17 realizes making driving wheel 13 to turn over an angle of being scheduled to fully.
If the single compensation step after formation shape is sealed is not enough for regulating completely again, then make when engaging when friction clutch is closed next time, ratchet 15 again with next, to follow next tooth 26 in current tooth 25 back to form shapes sealed and regulate again when separating next time.If this compensation process is enough, then ratchet leans against on the tooth 26 and in separation process at radially outer when engaging friction clutch and slides on this tooth, up to reaching the wear limit of regulating again for next time again.Repeat this adjustment process again, up to absolute wear limit that reaches friction plate and the essential clutch driven plate of changing.In order to be matched with new friction plate thickness, can make torsion device reversing in principle, if at this moment with sealed being cancelled of shape of ratchet 15.
If torsion device is stuck when regulating again, then can the function of friction clutch not had a negative impact.But the rigidity of such design flexibility element 16, make for make ratchet 15 depart from the required power of backstop 17 less than than by the accumulator between clutch housing 2 and the platen 3 for mobile this platen applied force, although therefore do not regulate again, still can handle friction clutch.
Fig. 6 illustrates the principle of regulating displacement again for the friction clutch restriction that separates fully.Surpass platen 3 one to be used for separately frictional fit in principle be enough and after Fig. 5 described displacement, reach a maximum separation displacement always.For this reason, has the desired axial relative movement of preventing ratchet 15 and driving wheel 13 during regulating displacement or the continuation of the adjustment process again of adjusting angle is extended in the axial direction again opening procedure again by lever system 7 surpassing, its mode is: lever system 17 is taken with lever system 7 on axially and is in the backstop 18 that reclines and contact, and elastic element is lifted 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 displacement of the continuation on clutch housing 2 directions at platen 3 thus.
Fig. 7 is illustrated in the controlling device again 1 in the state of the closure that is loaded with the impacting force of maximum 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.Set up bigger distance by spin canting ring 8 at this between lever system 7 and platen 3, this bigger distance makes lever system turn back to its home position.The elastic element 16 that has a ratchet 15 occupied its home position and now radially outer lean against and following on the sense of rotation original on the tooth 26 of nipper 25 back.
Fig. 8 illustrates the favourable topology example of the platen 27 with ramp system such 28 and torsion device 29.Platen 27 has the known parts that are used to be installed on the clutch housing, that for example be shaped and acceptance division 30 that reprocessed in case of necessity, that be used for fixing accumulator such as leaf spring, that have perforate 31, these acceptance divisions allow the nothing on the clutch housing to relatively rotate but the connection that axially can be offset, wherein realize preloading of accumulator by this way, platen 27 is closed against the power effect of land used by lever system of doing of accumulator and after eliminating the impacting force that causes by lever system the relexation by accumulator turn back in the position of opening.Perforate 32 can utilize many-sidedly and for example can be used to connect the additional quality that axially can be offset with respect to platen as the vibration damping quality.On given radius, processing the inclined surface 33 that on circumference, distributes on the platen 27, they in the view of platen 27, can in Forging Technology, in blank, be shaped and can smear metal ground by fine finishing.Also can be selectively, for example on platen, place and fixedly rolled-up stock or working of plastics.Corresponding to inclined surface 33 ground, the inclined plane ring 34 that makes respective diameters is by being placed on the inclined surface 33 on corresponding inclined-plane 35 on the circumference, and this inclined plane ring has the surface of contact that is used for lever system.Inclined plane ring 34 can be at least for assembling anticreep land and be fixed on the inclined surface 33.Under the simplest situation, assemble lever system and clutch housing later at once at the placement inclined plane ring.
The torsion device 29 that is used for inclined plane ring 34 utilizes reception unit 37 to be received in platen 27, and this reception unit is made of the thin plate clip and can rivets or otherwise fix with platen 27.Leading screw 38 of supporting in reception unit 37 is being fixed on the threads of lead screw 39 to a feed screw nut 40 antitorque commentaries on classics on this leading screw, is for example utilizing the face contact on reception unit 37 to be received.Driving wheel 41 nothings are arranged on the leading screw 38 with relatively rotating, for example utilize a polygonal to be provided with.Driving wheel 41 also can otherwise be fixed or directly process from leading screw with being similar to bolt with nut.In driving wheel 41, process, for example roll out circumference type exterior feature 42 and for example nibble structure.Feed screw nut 40 utilizes wide 43 shapes of external form to be embedded in the dead slot 44 of inclined plane ring 34 sealedly.When driving wheel 41 is rotated by the unshowned control gear that is fixed on the clutch housing, have leading screw 38 rotations of threads of lead screw 39 and make feed screw nut 40 axially along leading screw 38 skews, the helical pitch of this threads of lead screw of design makes that the rotation of feed screw nut 40 is self-lockings like this.The anchor ring 36 that utilizes the external form exterior feature 43 of feed screw nut 40 to be embedded into to make the inclined plane ring rotation in the dead slot 44 of inclined plane ring 34 and make inclined plane ring 34 is with respect to platen 27 axial dipole fields.
Fig. 9 illustrates the details of the torsion device 29 of Fig. 8 with sectional view, and it has leading screw 38, feed screw nut 40, driving wheel 41 and reception unit 37.Torsion device 29 produces feed screw nut 40 when leading screw 38 rotations straight line longitudinal movement.And inclined plane ring 34 rotation on platen 27 in circular motion.The work angle of extension on whole adjusting angle again between the dead slot 44 of the external form that compensates feed screw nut 40 wide 43 and inclined plane ring 34 correspondingly is shaped them 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 the described dead slot along with the increase of adjusting angle again.
Figure 10 illustrates the partial section of the embodiment of friction clutch 47 along its spin axis 48, and half controlling device 49 wherein only is shown.Friction clutch 47 is made of clutch housing 50, and platen 27 utilizes in this sectional view sightless accumulator not have to relatively rotate and axially can be received with being offset in clutch housing.Received the lever system 51 as belleville spring 52 in this external clutch housing 50, 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 a pressure type friction clutch 47, and it separates by pressure-loaded disc spring tongue 53 time.For this reason, belleville spring 52 utilizes two steel wire rings 54, but 55 are bearing on the clutch housing by rivets deflection ground under the condition that forms double-arm lever unshowned, that these two rings are mutually clamped, and wherein the power edge 56 of radially outer clamps with respect to unshowned compression plate platen 27 under the condition of the same unshowned friction plate of clamping.Clamp between platen 27 and belleville spring 52 has 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.
Control gear 57 is made of elastic element 58, and it is placed on the cover that radially extends of clutch housing 50 and has the parts of crooked in the axial direction formation ratchet 59, and this ratchet directly upwards is stretched on the driving wheel 41.The backstop 60 of the elastic element 58 of restriction pretension constitutes by bearing pin 61 or rivet on platen 27 directions, and it passes elastic element 58 and utilizes head 62 to be formed for the axial stop of elastic element 58.Can axially be received in movably in the clutch housing 50 towards backstop 63 limitedly at its other end upper pin 61, therefore when the big separation displacement of friction clutch 47, when the 64 pairs of heads of locating face 62 by belleville spring 52 load, bearing pin 61 is axially resisted the pretightening force of elastic element 58 and is moved, this elastic element adjusting again of being taken and finishing to carry out thus.The function that friction clutch 47 is regulated again on the thickness degree corresponding to the schematic representation of Fig. 1 to 7.
Figure 11 illustrates plotted curve, and the possible shape of the power variation of each memory unit about the platen stroke wherein is shown qualitatively.The power of the accumulator between curve 65 expression platens and the clutch housing, it with a plurality of, for example three forms that are distributed in the leaf spring on the circumference repeatedly are illustrated.The variation of power on the platen stroke descends slightly.Its absolute force is higher than effectively, with the ratchet power of curve 66 expressions open when the impacting force of lever system weakens so that guarantee friction clutch.Effectively ratchet power is come predetermined by the pretension of elastic element.
List of numerals
1 adjusting device 8 ramp system again
2 clutch housings, 9 inclined plane rings
3 platens, 10 inclined surface
4 compression plates, 11 torsion devices
5 spacings, 12 control device
6 operating points, 13 driving wheels
7 lever systems, 14 circumference type exterior features
15 ratchets, 45 radiuses
16 elastic elements, 46 gaps
17 backstops, 47 friction clutches
18 backstops, 48 spin axiss
19 disengaging configurations 49 are controlling device again
20 abration positions, 50 clutch housings
21 surface of contact, 51 lever systems
Wide seamed edge 52 belleville springs of 22 types
23 least parts, 53 disc spring tongue
24 teeth, 54 steel wire rings
25 teeth, 55 steel wire rings
26 teeth, 56 power edges
27 platens, 57 control gear
28 ramp system such, 58 elastic elements
29 torsion devices, 59 ratchets
30 acceptance divisions, 60 backstops
31 perforates, 61 bearing pins
32 perforates, 62 heads
33 inclined surface, 63 backstops
34 inclined plane rings, 64 surface of contact
35 inclined-planes, 65 curves
36 anchor rings, 66 curves
37 reception units, 67 curves
38 leading screws, 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 (19)
1. friction clutch (47), at least comprise a clutch housing (2,50), have one relative to this clutch housing do not have relatively rotate ground but can axially go up the platen (3 that moves limitedly, 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 axially moves for this friction clutch of open and close (47) under the situation of the friction plate that clamps a clutch driven plate, it is characterized in that, according to compression plate and platen (3, the variation of the spacing 27) (52) 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) between ramp system such (8,28) reverse, be used for compensation at platen (3,27) with lever system (7,51) between the error spacing that produces in when wearing and tearing, this control gear utilizes sealed this torsion device (11 of controlling of this shape, 29), this torsion device (11,29) reverses when opening at this friction clutch (47) by this control gear (12,57).
2. friction clutch (47), at least comprise a clutch housing (2,50), have one relative to this clutch housing do not have relatively rotate ground but can axially go up the platen (3 that moves limitedly, 27), this platen can be bearing in this clutch housing (2 by one, 50) lever system (7 on, 51) under the situation of the friction plate of clamping one clutch driven plate, axially move relative to the compression plate that lid is provided with regularly with respect to one, wherein at this clutch housing (2,50) with this platen (3,27) accumulator that works on axially 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 such (8 between, 28) reverse, be used for compensation in the error spacing that when wearing and tearing, produces between platen (3,27) and the lever system (7,51), this control gear utilizes sealed this torsion device (11 of controlling of this shape, 29), this torsion device (11,29) is by this control gear (12,57) at this platen (3,27) by this lever system (7,51) unloaded and at this platen (3,27) by described at platen (3,27) with this friction clutch housing (2,50) between the accumulator that works and being reversed during mobile.
3. friction clutch as claimed in claim 1 or 2 (47), it is characterized in that, described torsion device (11,29) constitutes by a leading screw (38) that can be received on this platen (3,27) with reversing, this leading screw is by a control gear (12,57) driving and receive one does not have the feed screw nut (40) reverse, and that this feed screw nut shape is coupled to sealedly is one that constitute circlewise, can be with respect to the inclined surface (10 that is arranged on this platen (3,27), 33) in the ramp system such of reversing (8,28).
4. friction clutch as claimed in claim 3 (47) is characterized in that, leading screw (38) and feed screw nut (40) form the control gear (12,57) of a self-locking.
5. as claim 3 or 4 described friction clutches (47), it is characterized in that described feed screw nut (40) can articulatedly swingingly be coupled in the described ramp system such (28).
6. as each described friction clutch (47) in the claim 3 to 5, 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) shape is coupled in this circumference type exterior feature sealedly for reversing of this driving wheel (13,41) by the ratchet of preload (15,59) by one when wearing and tearing occurring.
7. friction clutch as claimed in claim 6 (47) is characterized in that, when not having wearing and tearing, described ratchet (15,59) is directed in this circumference type exterior feature (14,42) outside.
8. as each described friction clutch (47) in the claim 1 to 7, it is characterized in that described control gear (12,57) is fixed on the described clutch housing (2,50).
9. as each described friction clutch (47) in the claim 3 to 8, 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 and constituted on the direction by elastic element preload, that have a ratchet (15,59) (16,58).
10. friction clutch as claimed in claim 9 (47) is characterized in that, described ratchet (15,59) is radially clamped with respect to described circumference type exterior feature (14,42).
11. as claim 9 or 10 described friction clutches (47), it is characterized in that, described elastic element (16,58) towards platen (3,27) direction upper support on one first backstop (17,60).
12. as each described friction clutch (47) in the claim 9 to 11, it is characterized in that, described elastic element (16,58) rigidity, be used to make described ramp system such (8,28) reverse essential power and at described platen (3,27) with described clutch housing (2, the rigidity of the accumulator that works 50) is coordinated mutually, make at described lever system (7,51) impacting force is unloaded and be in shape when sealed at when wearing and tearing ratchet (15,59) and described circumference type exterior feature (14,42), cause that one of described driving wheel (13,41) reverses.
13. as each described friction clutch (47) in the claim 8 to 12, it is characterized in that, one at described lever system (7, when being exceeded by the predetermined displacement of this lever system process when 51) unloaded, described elastic element (16,58) taken on the direction of described platen (3,27) dorsad by described lever system (7,51).
14. friction clutch as claimed in claim 13 (47) is characterized in that, described lever system (7,51) being exceeded the back in described displacement is in to recline with one second backstop (18) and contacts, wherein, first backstop and second backstop (17,18) are opened with a predetermined intervals mutually.
15. friction clutch as claimed in claim 14 (47) is characterized in that, described two backstops are arranged on one and overcome on can be axially with respect to described clutch housing (2,50) on the bearing pin (61) that moves as land used of an accumulator.
16. friction clutch as claimed in claim 15 (47) is characterized in that, described accumulator is described elastic element (58).
17., it is characterized in that described lever system (7,51) is a dish-shaped spring (52) as each described friction clutch (47) in the claim 1 to 16.
18., it is characterized in that described friction clutch (47) is a pressing type clutch as each described friction clutch (47) in the claim 1 to 17.
19., it is characterized in that described friction clutch is a pull type clutch as each described friction clutch (47) in the claim 1 to 17.
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 true CN101952613A (en) | 2011-01-19 |
| CN101952613B 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) | DE102008051100A1 (en) |
| WO (1) | WO2009056092A1 (en) |
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- 2008-10-09 DE DE102008051100A patent/DE102008051100A1/en not_active Withdrawn
- 2008-10-09 DE DE112008002711.0T patent/DE112008002711B4/en active Active
- 2008-10-09 WO PCT/DE2008/001663 patent/WO2009056092A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102008051100A1 (en) | 2009-05-07 |
| CN101952613B (en) | 2014-06-04 |
| WO2009056092A1 (en) | 2009-05-07 |
| DE112008002711B4 (en) | 2020-01-02 |
| DE112008002711A5 (en) | 2010-07-08 |
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