CN103527671A

CN103527671A - Flexible joint automatic control space wedging type friction connector

Info

Publication number: CN103527671A
Application number: CN201310293902.4A
Authority: CN
Inventors: 洪涛
Original assignee: Individual
Current assignee: Shandong Runmeng Emergency Rescue Equipment Co ltd
Priority date: 2012-07-03
Filing date: 2013-07-03
Publication date: 2014-01-22
Anticipated expiration: 2033-07-03
Also published as: CN103527671B; CN102758861A

Abstract

The invention provides a flexible joint automatic control space wedging type friction connector which can be used as an overrun clutch, a motor vehicle controllable slider, an emergency brake of a lifting device and the like. The friction connector mainly comprises a full surface-contact space wedging type two-way overrun clutch, a directional mechanism C and a damping mechanism D. The directional mechanism C sets the two-way overrun clutch into a one-way overrun clutch or to be in a coupler work mode in a manner that the circumferential relative position of a guiding piece 50 and an intermediary piece 90 of a rotating guiding mechanism G is restrained. The damping mechanism D is used for delaying the relative rotation speed of the guiding piece 50 and the intermediary piece 90. Preferably, the directional mechanism C is a cylindrical cam mechanism, and the damping mechanism D is a cylinder-piston mechanism. Compared with the prior art like the motor vehicle controllable slider, the friction connector is smaller in size; the bearing capacity is increased doubly and service life is prolonged doubly at any rate, and the friction connector has flexible and shock-free joint features.

Description

The self-controlling spatial-wedging friction connector of flexible engagement

Related application

The application is the dependent patent application by patent documentation WO2012/089131Al and the disclosed the applicant's of WO2011/000300Al basic patent application, and the application requires the preference of the Chinese patent application 201210242205.1 that the applicant proposes.The full content of the disclosure three patent applications is formerly incorporated herein by reference.

Technical field

Present invention relates in general to a kind of with frictional connection mode conveying rotary motion or torque in all transmission fields, or prevent this to rotatablely move or the frictional coupling device of torque, comprise clutch and break, and include this connection set such as motor-vehicle skid device etc., particularly a kind of self-controlled type friction clutch or friction brake that can flexible engagement.

Background technique

Statement in this part only provides the background information relevant with understanding teachings herein and analysis but not necessarily forms prior art.

In reality transmission, usually require the frictional connection device/device of control type and self-controlled type to there is the ability of flexible engagement, for example clutch in motor vehicle and break.To this, prior art is easily by independently controlling the size of engaging force, provided the flexible engagement scheme for control type frictional connection device, but due to can not independently controlling of the engaging force of self-controlled type frictional connection device, except the controlled centrifugal clutch of dependent (engaging force is associated with rotating speed), prior art never provides the solution for the flexible engagement of self-controlled type frictional connection device.For example, for free wheel device wherein, except additional, must provide the control type friction clutch of engaging force in the external world, have nothing for it.And for the spatial-wedging friction connector of up-to-date proposition, the applicant is in patent documentation WO2012/089131Al, disclose the solution of the control type frictional connection device based on it, but do not provided the solution of the self-controlled type frictional connection device based on it.For example,, for the technological scheme of the flexible engagement of two-way controllable type glider in Motor Vehicle.In addition, prior art and work-around solution thereof also exist transmission capacity low, control difficulty, and reliability and maintenance are poor, the shortcoming that working life is too short.

Summary of the invention

The present invention is devoted to the device of design based on brand new technical principle, to avoid above-mentioned shortcoming.

The technical problem to be solved in the present invention is to provide a kind of self-controlling spatial-wedging friction connector with flexible engagement ability, relative prior art, and it has higher transmission capacity and operating life.

For solving the problems of the technologies described above, the self-controlling spatial-wedging friction connector of the present invention's flexible engagement comprises, around an axis revolution and at least one traction friction mechanism that can axial engagement, it has the intermediate piece that is at least roughly ring-type and the friction member that turns round and be provided with rubbing surface around described axis, to transmit friction torque between this two member; For this traction friction mechanism provide engaging force and around above-mentioned axis rotating at least one rotate guide mechanism, it has the guiding element that is at least roughly ring-type and the intermediate piece that turns round and be provided with corresponding guide surface around above-mentioned axis; In order to the closed conflict of axial force of setting up between guiding element, intermediate piece and friction member, connect, and the bag shape member being non-rotatably connected with guiding element or intermediate piece, it is provided with the inner peripheral surface around the rotating at least roughly half cycle of above-mentioned axis, and is positioned at the circumferential recess of the roughly half cycle on this inner peripheral surface and by the outer circumferential face of above-mentioned bag shape member, is communicated to the entrance of this circumferential recess; At least indirectly be arranged at least one damping mechanism between described guiding element and described intermediate piece; And, be arranged between two axial resistance surfaces of at least one axial end of rotating guide mechanism, in order to form at least one elastic element of flexible axial seal force; When guiding element and friction member can be driven while connecting into a friction piece by intermediate piece, the lift angle λ at the mutual conflict position between guiding element and intermediate piece both sides' guide surface, be greater than zero and be less than or equal to ξ,, 0 < λ≤ξ, wherein, ξ is the maximum value that can make the lift angle λ of the guiding friction pair self-locking that is formed at this conflict position.

Best, also comprise the elasticity pre-tightening mechanism at least with an elastic element, it is for keeping constantly at least indirectly frictional connection between intermediate piece and friction member.

For increasing ζ and ξ, traction friction mechanism can be many friction disk types friction mechanism, and it has two groups of axial staggered each at least one friction plates that are non-rotatably connected respectively with intermediate piece with friction member.

For increasing torque capacity, power transmission friction mechanism can be many friction disk types friction mechanism, and it has two groups of axial staggered each at least one friction plates that are non-rotatably connected respectively with guiding element with friction member.

It should be noted that, the related notion that present specification is used or the implication of noun are as follows:

Indirectly arrange: be arranged on on non-rotatable other member being connected of the destination member arranging.

Rotate guide mechanism: circumference is relatively rotated to be converted at least comprise and axially relatively moving or the guide mechanism of mobile trend.For example, the slides/rolls formula spiral of lead angle strict conformance and not strict conformance or part screw mechanism, radial peg groove mechanism, end face wedge mechanism, end face embeding mechanism, end ratchet mechanism, and, cylinder/end cam mechanism.

Space wedge mechanism: by rotating guide mechanism and drawing the composite mechanism that friction mechanism forms.

Enter wedge: also claiming wedging, and separate wedge/go wedge contrary, is exactly that intermediate piece 90 can be connected with driving/be combined into working procedure and the state of a friction piece by guiding element 50 and friction member 70.

ζ and ξ: the Important Limit angle of space wedge mechanism, intermediate piece 90 as shown in Figure 1, 2, 3, logical on the one hand, cross its rubbing surface and for example 104 at least axially conflicts with the traction rubbing surface 72 of friction member 70, one one group of at least comprising that is not orthogonal to the rotary type traction friction mechanism F1 of rotational axis X to form the W that makes a concerted effort of the normal pressure at conflict position draws friction pair; On the other hand, by its guide surface towards a certain circumferencial direction 94a for example, with the corresponding guide surface of guiding element 50 for example 54a at least axially conflict, with form the N that makes a concerted effort of the normal pressure at conflict position be not orthogonal to rotational axis X rotation guide mechanism G at least comprise one group of guiding friction pair of; The common tangent at this conflict position and the mean value hanging down as for the angle of the plane of rotational axis X, be called the lift angle λ at this conflict position; On the one hand, by other surface, also can act on such as other active force for elasticity pretension or spacing object, for example, shown in Fig. 1,2,4A～4D, 5～7 again; In rotating the rotation guiding operating mode of guide mechanism G, namely guiding element 50 cause intermediate piece 90 along arrow P direction in Fig. 3 for example with in the operating mode that is more than or equal to zero speed and rotates relative to friction member 70, the minimum lift angle at conflict position, both sides surface of friction pair self-locking of can guaranteeing to lead is defined as ζ, and maximum lift angle is defined as ξ.These two limiting angles have defined that relative guiding element 50 forwards of intermediate piece 90 are dynamic and static stops motionless and every forms of motion that rotate backward completely.Concrete meaning is as follows:

1, when ξ < λ < 90 spends, guiding friction pair and traction friction pair all can not friction self-lockings, by the normal pressure N of guiding friction pair, or its component Q and T, guiding element 50 can cause intermediate piece 90 relative its forward that is arrow P direction trackslip and extrude.Therefore, guiding element 50 can not be become a friction piece by intermediate piece 90 wedgings with friction member 70.Be because pressure N is derived from non-resilient power, or be derived from elastic force but limit by element structure, just cause intermediate piece 90 only by guiding element 50, being promoted friction member 70 frictions relatively and trackslip and by actual, do not extruded.

2,, when ζ < λ≤ξ and λ > 0, traction friction pair has the characteristic that enters sliding friction state prior to guiding friction pair breakthrough self static friction state/resistance.Therefore, intermediate piece 90 can become a friction piece with friction member 70 wedgings by guiding element 50, but when relative guiding element 50 overload of friction member 70, traction friction pair will normally proceed to sliding friction state because breaking through its static friction state/maximum static friction resistance, and guiding friction pair is not because also breaking through its static friction state/resistance all the time in constant self-locking state.Accordingly, space wedge mechanism is in half wedging state, and free wheel device is in non-complete jointing state.

3,, when 0 < λ≤ζ (for the situation of ζ > 0), guiding friction pair has prior to traction friction pair breaks through self static friction state/resistance and the characteristic that enters sliding friction state.Therefore, intermediate piece 90 can become a friction piece with friction member 70 wedgings by guiding element 50, but when relative guiding element 50 overload of friction member 70, guiding friction pair will cause intermediate piece 90 to have the trend that relative guiding element 50 trackslips and climbs because breaking through its static friction state/maximum static friction resistance, and traction friction pair is not because also breaking through its static friction state/resistance all the time in constant self-locking state.Yet because the above-mentioned trend of climbing is stoped (except non-pressure N is derived from elastic force) by the axial force enclosed construction rigidity of space wedge mechanism, therefore, guiding friction pair is in fact forcibly maintained the general static friction state that is equal to self-locking.That is, intermediate piece 90, guiding element 50 and friction member 70 threes are forced to one of wedging/be combined into and rotate wholely, and the situation that there will not be trackslips mutually climbs, is loaded onto structure and damages unless crossed.Space wedge mechanism thereby the absolute self-locking/wedging state in similar diagonal-bracing type free wheel device, its transmission capacity only depends on structural strength.

Obviously, above-mentioned lift angle λ is exactly the angle of wedge of space wedge mechanism, also claims wedging angle/choke angle, and only when 0 < λ≤ξ, and space wedge mechanism can wedging, and frictional connection device can engage.

Relative prior art, self-controlling spatial-wedging friction connector according to flexible engagement of the present invention, because of the structural feature of its complete face contact friction pair, and there is transmission capacity and the working life of at least doubling, and make free wheel device itself there is first the ability of flexible engagement.By following embodiment's explanation and accompanying drawing, it is more clear and clear that objects and advantages of the present invention will seem.

Accompanying drawing explanation

Fig. 1 is according to the schematic, exploded perspective view of the simplification of embodiments of the invention one.

Fig. 2 is the axial sectional view according to embodiments of the invention one.

The flank profil of Fig. 3 Shi Tu2Zhong Ge mechanism is to the local expansion figure of same external cylindrical surface radially projecting.

Fig. 4 A～4D is the rough schematic view with the various damping mechanisms that in Fig. 2, K-K section represents.

Fig. 4 E is the schematic diagram of damping device in Y-direction view in Fig. 4 D.

Fig. 5 is the axial sectional view according to the simplification of embodiments of the invention two.

Fig. 6 is the axial sectional view according to the simplification of embodiments of the invention three.

Fig. 7 is the axial sectional view according to the simplification of embodiments of the invention four.

Embodiment

Necessary explanation: in the text of this specification and institute's drawings attached, same or analogous member and characteristic portion all adopt identical reference character, and only give necessary explanation when they occur for the first time.Equally, the also working mechanism of the same or similar mechanism of not repeat specification or process.For difference is arranged on identical member or the characteristic portion on symmetry or corresponding position, this specification has added letter after its reference character, and during in general reference explanation or without difference, additional any letter.

Embodiment one: the self-controlling spatial-wedging friction connector S1 of flexible engagement

The frictional connection device S1 of the axle-shaft drive formula shown in Fig. 1～4A is a two-way controllable type motor-vehicle skid that can switch at any time operating mode.It comprises, forms and have the limiter element 180 of axial force closing function around axis X.This limiter element 180 is a ring-type bag shape member best, the axial middle part of the inner peripheral surface 84 that it forms around axis X, and be provided with is the dish type ring-type circumferential recess 78 of plane coaxial line best.The internal surface of the approximately half cycle of this circumferential recess 78, extends to the outer circumferential face of limiter element 180 along the two tangent direction H that are parallel to each other and H ' best, and forms uniform section rectangle entrance 82, referring to Fig. 1,2.The inner radial surface 80 of circumferential recess 78, thereby extend into the non-closed interior radial surface with U font shape of cross section, and form two circumferential walls 85 that are parallel to each other.Axially, can trackslip successively and be arranged on intermediate piece 90 on tubular matrix 76 outer circumferential faces that the interior ring side of friction member 70 extends towards the inner, guiding element 50 in the form of a ring roughly, can be along Fig. 1 hollow core arrow direction, in company with friction member 70 one, by entrance 82 to be directly brought into circumferential recess 78, and axially can be trackslipped and extend to the second axle 210 in limiter element 180 endoporus, be radially positioned in axis X.

The first axle 200 and the second axle 210, by the Placement such as spline pair, are non-rotatably connected to respectively the inner peripheral surface of inner peripheral surface 84a and tubular matrix 76, torque is imported into and spread out of frictional connection device S1.Certainly, except the spline tooth of inner peripheral surface 84a, torque also can be imported into or spread out of by the further feature curved surface being arranged on limiter element 180, also can realize the transmission of wheel-shaft type.Preferably, on the interior edge face of the second axle 210, be provided with the cylindric central protuberance 214 of coaxial line X, it is accommodated in the center hole 204 of the coaxial line X that is arranged in the first axle 200 interior edge faces, and best interval with rotatable needle roller 206.Certainly, the second axle 210 also can pass through needle roller 206, is rotatably supported on inner peripheral surface 84b.

Obviously, the ring-type bag shape limiter element 180 of axial force sealing can be also a compostle member, and its entrance 82 also can be sealed at least in part.For example, the fastening means by such as welding, riveted joint or bolt connect, is connected to the end face of a dish type annulus by a cup-shaped shell-type limiter element axial restraint with center hole, and limits circumferential recess 78.For another example, by the mode that is fastenedly connected such as weld, arrange to interference at least one circumferential band or ring gear on the outer circumferential face that comprises axial middle part and/or outer end, footpath is upwards at least roughly symmetrical, and on semicircle inner headed face, be provided with two semicircle shell-type limiter elements of semicircle peripheral groove, radially regularly to being connected into a combined type ring-type limiter element that limits complete circumferential recess 78.Certainly, if needed, also can, in for example radially one end of the interface of two semicircle shell-type limiter elements, the less radial direction through hole of circumferential span of a similar entrance 82 be set best.Also can be adaptation high speed rotating and in the remaining space of the entrance 82 not being filled, an arc balancing component/balancing weight for example best with this remaining space with complementary structure is set.Being described in more detail and illustrating of dependency structure, can referring to above two basic patent applications of whole combination, no longer repeat specification herein.

Continuation, referring to Fig. 1～3, is provided with a flanged type arm of force 55 that radially extends to entrance 82 outer rims on the outer circumferential face of guiding element 50.This arm of force 55 has complementary shape of cross section best with entrance 82, and two circumferential flank surface 53 meshes simultaneously/conflicts with two circumferential walls 85 respectively, causes guiding element 50 and limiter element 180 non-rotatably to connect into a combined type bag shape guiding element.On the annular interior edge face of guiding element 50, be provided with one group best around the circumferential uniform tooth-like guiding tooth 52 of bidirectional screw of axis X.Correspondingly, facing on the end face of guiding element 50 of intermediate piece 90, is provided with the tooth-like guiding tooth 92 of one group of spiral that is complementary structure with the tooth 52 that leads.

Guiding tooth

52 and 92 is chimeric unvaryingly, forms best around rotating contact type Double-directional rotary guide mechanism G of axis X.

In addition, intermediate piece 90, by the revolution rubbing surface 104 on its anodontia end face, can be connected with rotary type traction rubbing surface 72 frictions that are arranged on friction member 70 opposing end surfaces with complimentary fashion best, forms revolving molding surface contact traction friction mechanism F1.And friction member 70 is by its power transmission rubbing surface 74 and an interior edge face that is arranged on circumferential recess 78, namely power transmission rubbing surface 58 frictions of the circular dish type end 188b interior edge face of limiter element 180 are connected, form and non-rotatably combine with friction member 70 and guiding element 50 respectively, and between the two, directly transmit the revolving molding surface contact power transmission friction mechanism F2 of friction torque.Traction friction mechanism F1 and rotate guide mechanism G and jointly form face type space wedge mechanism ，Gai mechanism again together with power transmission friction mechanism F2, forms the core institution of frictional connection device S1---the spatial-wedging friction bindiny mechanism that axial force is sealed.

Should be noted that, the implication that the application " directly transmits friction torque " refers to, the bang path of torque between two members is only through a friction mechanism, and without any second other mechanism, the quantity of rubbing surface/sheet that itself and this friction mechanism has is without any relation.

Obviously, because dish type ring-type circumferential recess 78 is arranged to planar disc but not cone plate-like best, therefore, frictional connection device S1 can not require the combination of guiding element 50 and intermediate piece 90 and the coaxial accuracy between limiter element 180 in theory.That is to say, between rotation guide mechanism G, the traction friction mechanism F1 in can Bu Dui frictional connection mechanism and power transmission friction mechanism F2 three and the coaxality of three and axis X do excessive demand, when especially rotating speed is not high.As long as two face contact Rotating friction pair is perpendicular to axis X, and guiding element 50 and the intermediate piece 90 only with very little relative rotation are coaxially set each other.And relative modern crafts guarantee that the coaxality between these two annular components is again a simple and work cheaply.Therefore, this will significantly reduce requirement and the cost of making, assembling and use frictional connection device S1, and expands its use field.

Detailed relation and the structure characteristic of Double-directional rotary guide mechanism G are described in conjunction with Fig. 3 below again.Wherein, there is best trapezoidal cross-section and the tooth-like guiding tooth 52 of every pair of face type spiral radially extending and 92 opposed facing guide surface 54 and 94, all complementally be configured to the screw type flank of tooth, after both are circumferential bonded to each other, just can form the spiral guiding friction pair corresponding to two groups of faces contacts of different circumferencial directions.Preferably, respectively towards two groups of guide surface 54a of different circumferencial directions and two complementary lift angle λ of 94a and 54b and 94b _aand λ _b, all equal symmetrically λ.Usually, 0 < λ≤ξ, distinguishingly, ζ < λ≤ξ or 0 < λ≤ζ (as ζ > 0).Obviously, if only need transmit unidirectional torque, lift angle λ _aand λ _bin one, 90 degree of the X that can equal best to parallel to the axis.Preferably, all guiding teeth 52 and 92 tooth depth, laminating when being all configured to not hinder corresponding to two groups of guide surface 54a of different circumferencial directions and 94a and 54b and 94b in the axial direction, that is tooth top is separately greater than zero best with the axial minimum separable δ of teeth groove groove bottom of living in separately, to guarantee that the circumferential degrees of freedom/gap ε that rotates guide mechanism G can equal zero.

Therefore, as above as described in two basic patent applications of whole combination, although be not essential, but when the C of Yi Ge attitude reference device is set best, frictional connection device of the present invention for example S1 just can be on zero, one or two circumferencial direction, optionally losing efficacy/cancel, it rotates the rotation guide function of guide mechanism G, thereby can limit its frictional connection mechanism, surmounts the operative orientation of rotation.Namely, by frictional connection device for example S1 set accordingly the coupling of all can engage/wedging on two circumferencial directions for, the free wheel device of joint/wedging on a circumferencial direction only, and on zero circumferencial direction the off-axis of joint/wedging.

Best, in the present invention, being at least the C of attitude reference device of, is a cotter way formula embeding mechanism that frictional connection device can be set as respectively to coupling and mono-directional overrun clutch mode of operation.Referring to Fig. 2～4A, the C of attitude reference device comprises, there is slip ring groove 126 and be set in slidably the verge ring 120 on limiter element 180 outer circumferential faces, be arranged at baseline trough 124 and guiding groove 134 on verge ring 120 inner peripheral surfaces, be accommodated in slidably respectively benchmark projection 122 and guide protrusions 132 in these two grooves.Wherein, benchmark projection 122 is arranged on the arc-shaped outer surface 57 of the arm of force 55 of guiding element 50, and guide protrusions 132 is arranged on the arc-shaped outer surface 97 of the arm of force 95 of intermediate piece 90 accordingly.Here, baseline trough 124 and guiding groove 134 can be the same conduit that started by an end there are different sections of different lead angles, can be two separate inner peripheral surface conduits that extend to respectively same end, referring to Fig. 7, it can be also the different piece of example same radial direction through hole formula conduit as shown in Figures 1 to 3.Preferably, benchmark projection 122 equals zero with the circumferential degrees of freedom of baseline trough 124.

The arm of force 95 of pedestal is set as guide protrusions 132, and that it has a similar arm of force 55 but suitable intilted circumferential flank surface 116, can make all to form best running clearance ε ' between two circumferential wall 85a of this arm of force 95 and entrance 82 and 85b.This gap/circumferentially degrees of freedom ε ' should arrive greatly such degree,, not hindering rotation guide mechanism G to realize it conflicts guiding element 50 and friction member 70 rigidly to two interior edge faces of circumferential recess 78, namely conflict to supporting end face 189 and power transmission rubbing surface 58, thereby the object that the closed conflict of the axial force of setting up rigidity connects, and no matter whether its two ends are provided with spring 100.

Arrange, the above-mentioned C of attitude reference device has such effect.That is, benchmark projection 122 is arranged in baseline trough 124 all the time, and guide protrusions 132 can lay respectively in baseline trough 124 and guiding groove 134, and namely guiding groove 134 has shared a part for baseline trough 124.When guide protrusions 132 is located axially in baseline trough 124, the circumferential degrees of freedom of benchmark projection 122, guide protrusions 132, only allows guiding

tooth

92 and 52 mutually to conflict on a circumferencial direction, and causes intermediate piece 90 to enter wedge.For example, corresponding to guide surface 54a and the 94a of arrow P direction in Fig. 3, and in arrow R direction, on

guide surface

54b and 94b can not conflict mutually.When guide protrusions 132 is located axially in guiding groove 134, the circumferential degrees of freedom of benchmark projection 122, guide protrusions 132, will allow guiding

tooth

92 and 52 all can mutually conflict on two different circumferencial directions, that is all can cause intermediate piece 90 to enter wedge.

So, as long as by for example unshowned known shift fork being arranged in slip ring groove 126, drive the relative limiter element 180 of verge ring 120 to move axially, cause guide protrusions 132 to lay respectively in baseline trough 124 or guiding groove 134, just frictional connection device S1 can be set as respectively to mono-directional overrun clutch and coupling mode of operation, can control type glider without the automobile-use with wheel function while making it be used as reversing.Position shown in Fig. 3, is set to the situation of mono-directional overrun clutch/glider corresponding to frictional connection device S1.

Obviously, if needed, as long as change as required the profile setting of guiding groove 134, make the relative guiding element 50 of intermediate piece 90 there are three different relative position/intervals, frictional connection device S1 has two-way wheel function by being easy to, and can be set as respectively double rolling key clutch and coupling mode of operation.

In addition, for making sliding corner as much as possible close to zero, frictional connection device S1 is also provided with elasticity pre-tightening mechanism best.This mechanism mainly comprises the spring that is specially helical compression spring 150 of at least one, and it is arranged between guiding

tooth

52,92 both sides' Topland and tooth bottom surface.For example, being arranged at the axial bore that is arranged in guiding tooth 92 tooth bottom surfaces, conflicts to the Topland of the tooth 52 that leads, referring to Fig. 1,2 in outer end.In fact, spring 150 can be by elastic material, made there is arbitrary form and any at least one elastic element of setting position, as long as it can cause revolution best, rubbing surface 104 is flexibly conflicted to drawing rubbing surface 72 all the time.

As above as described in two basic patent applications of whole combination, elasticity pre-tightening mechanism is non-the present invention essential also.When this mechanism is not set, although reliability decreases, frictional connection device S1 still can rely on the special setting of 0 < λ≤ζ of lift angle λ, and relies on the inertia while for example circumferentially rotating to cause intermediate piece 90 to enter wedge.

Be not difficult to find, during mode of operation in mono-directional overrun clutch, the working procedure of the frictional connection mechanism in frictional connection device S1 will be very simple, there is no essential difference with prior art.For example, when guiding element 50 starts to have constantly along the initial instant of the trend that in Fig. 1,3, arrow P direction is rotated relative to friction member 70, friction member 70 is by the zero load/traction friction torque by traction friction mechanism F1, drawing the intermediate piece 90 that rotates guide mechanism G, relatively guiding element 50 is along the arrow R direction guide movement that rotates.Move axially/the tension force that this rotation guide movement produces, by guiding tooth 92 moment wedging in the end face wedge shape space that guide surface 54a and traction rubbing surface 72 surround, namely intermediate piece 90 becomes a friction piece by guiding element 50 with friction member 70 wedgings, in the time of traction friction mechanism F1 thereby axial engagement, this tension force also by friction member 70 swelling at once at the corresponding interior edge face of limiter element 180 namely on power transmission rubbing surface 58, the mode connecting to form the closed conflict of axial force, cause power transmission friction mechanism F2 also synchronously to engage, and (combined type bag shape) guiding element 50 and friction member are upwards directly connected into a friction piece for 70 weeks.Referring to Fig. 2 lower half portion.

So frictional connection device S1 engages along with the wedging of space wedge mechanism.The driving torque M being imported into by the first axle 200 on inner peripheral surface 84a ₀, pass to respectively guiding element 50 and the limiter element 180 of circumferential one, then be divided into the wedging friction torque M transmitting via rotating guide mechanism G and traction friction mechanism F1 ₁, and the power transmission friction torque M directly transmitting via power transmission friction mechanism F2 ₂, pass to respectively friction member 70, and through the spline pair of the latter's inner peripheral surface, pass to the second axle 210 outputs.Wherein, M ₀=M ₁+ M ₂, and the size of above-mentioned axial tension force, wedging power/engaging force and each frictional force, be all proportional to completely adaptively M ₁, driving torque M namely ₀.

And work as guiding element 50, start to have constantly along the initial instant of the trend that in Fig. 1,3, arrow R direction is rotated relative to friction member 70, guiding element 50 does relative to intermediate piece 90 rotation that the leading role of guide mechanism G is rotated in releasing by starting.Therefore, the rotation leading role of the normal pressure between

guide surface

54a and 94a and rotation guide mechanism G, will disengage disappearing in a flash and simultaneously of trend mutually along with two guide surfaces produce.Nature, two friction mechanism F1 of the move axially/tension force based on the G of this mechanism and F2 and whole space wedge mechanism, will be immediately separated or separate wedge.So frictional connection device S1 finishes to engage and start to surmount rotation, intermediate piece 90 is followed the relative friction member 70 of guiding element 50 and is trackslipped along the friction of R direction.Referring to Fig. 2 upper half part.

Far and away, due to the symmetry properties making progress in week, guiding element 50 is along arrow R direction rotating relative to friction member 70 in Fig. 1,3, that is during the mode of operation of frictional connection device S1 in reciprocal mono-directional overrun clutch, it has the working procedure being quite analogous to naturally, herein without the necessity repeating.Certainly, torque also can be transmitted by path contrary to the above, and working procedure does not have any essential difference.

Equally without doubt, when frictional connection device S1 is during in coupling mode of operation, its work on two different circumferencial directions is rotated, and all will engage because of the wedging as above of frictional connection mechanism wherein, thereby does not have the working procedure of separating wedge.So, without the necessity illustrating.

Technique scheme be intactly recorded in above in two basic patent applications of whole combination, and be not the application's feature technology.What in this, please illustrate focuses on, and how to realize the setting of flexible engagement and operating mode.For this purpose, in frictional connection device S1, be provided with specially at least one damping mechanism D, and, corresponding elastic element with it best.

Referring to Fig. 2,3,4A, for realizing flexible engagement, the object of elasticity wedging best namely, lift angle λ in frictional connection device S1 is set to 0 < λ≤ζ (as ζ > 0), and, also between guiding element 50 and limiter element 180 both sides' support end face 51 and 189, interval is with at least one elastic element, for example dish or diaphragm spring 100.This spring 100 is to form the form of flexible axial seal force, for the rotation leading role between guiding element 50 and intermediate piece 90 provides the elastic axis of gradual change to tension force.Be arranged at least one position limit pin 176 in internal surface 80 respective radial holes of limiter element 180, the respective flanges of axially conflicting to guiding element 50 outer circumferential faces in the mode that can trackslip, cause guiding element 50 can keep its precompression to spring 100, thereby guarantee that the axial freedom/gap of friction member 70 can be more than or equal to zero best.

In fact, spring 100 is arranged between two relatively static axial resistance surfaces optional.It can be arranged on and rotate axially arbitrarily between other any two members at one end and/or two ends, as long as can form flexible axial seal force of guide mechanism G.

Accordingly, frictional connection device S1 is also provided with to delay damping mechanism Da and the Db of the speed that relatively rotates between guiding element 50 and intermediate piece 90.These two damping mechanism D are cylinder-piston mechanism best, are symmetricly set in best respectively the circumferential both sides of the arm of force 95.It comprises, by spring 22, continued best to suppress the piston 20 to circumferential wall 85, radially be arranged on the corresponding outer circumferential face of intermediate piece 90, or be arranged in circumferential flank surface 116, for taking in slidably the piston hole 24 of piston 20 and spring 22, be accommodated in the fluid of piston hole 24, for example air, brake fluid or cooling liquid, and the damping hole being served as by the gap between the inner and outer circumferential surfaces of intermediate piece 90 and tubular matrix 76 or damping gap.

Arrange, spring 100, two damping mechanism Da and Db etc. have such effect.That is, rotate guide mechanism G while not producing leading role, intermediate piece 90 should be greater than zero in the axial freedom of 70 of guiding element 50 and friction members best.And in the rotation leading role of rotating guide mechanism G by spring 100 axial compression to the limit, cause guiding element 50 to be conflicted to before supporting end face 189 by spring 100 rigidity, piston 20 is not compressed into the limit best yet, or circumferential flank surface 116 is not conflicted yet to circumferential wall 85.

Therefore, in frictional connection device S1 engaging process as above, along with rotating the beginning of the rotation guide movement of guide mechanism G, namely along with intermediate piece 90 beginning that guiding element 50 and limiter element 180 rotate relatively, intermediate piece 90 generals as mentioned before relative guiding element 50 are trackslipped and are climbed.This relatively rotates when passing through guiding element 50 axial compression springs 100, also by the formula of trackslipping of

circumferential wall

85a or 85b, conflict, overcome the resistance of spring 22 and the pressure of the fluid in piston hole 24, start to cause piston 20a or the 20b of corresponding damping mechanism Da or Db radially to bounce back.Now, the frictional connection mechanism of frictional connection device S1 will connect because of having the closed conflict of flexible and nonrigid axial force, and enter the box-like jointing state of corresponding resilient wedge.

So, originally completely via the wedging friction torque M that rotates guide mechanism G transmission ₁, will be reduced to square M ₁', the part torque M of shunting ₁₁, will be temporarily through damping mechanism D, by guiding element 50, be directly passed to intermediate piece 90, thereby destroyed the friction self-locking that traction friction mechanism F1 should have, in other words, temporarily ζ is reduced to ζ ', make the lift angle λ of design be greater than this ζ '.Therefore drawing friction mechanism F1 will be in the formula Frotteurism that trackslips, and power transmission friction mechanism F2 is also naturally in the identical friction state that trackslips.The torque that this friction is trackslipped, by the elastic force corresponding to spring 100, and power torque M during no longer corresponding to rigidity wedging ₀.Obviously, by simple setting, be easy to guarantee to shunt torque M ₁₁be enough to compression piston 20, and within given damping period, for example, in 0.5～2 second, be compressed to the limit, also spring 100 is compressed to the planar disc of the limit simultaneously.Finally, the frictional connection mechanism of frictional connection device S1 connects the closed conflict of the axial force because of having rigidity, and proceeds to the box-like jointing state of corresponding rigid wedge.Completely corresponding to friction torque M ₁the axial tension force of rigidity, will force traction friction mechanism F1 friction self-locking utterly, thereby finish the flexible engagement process of the friction type that trackslips of frictional connection device S1.

Visible, frictional connection device S1 is because of the traction friction torque M in elasticity wedging stage ₁' be no longer relevant to the power torque M being inputted by guiding element 50 ₀, and being only relevant to the elastic force of spring 100 and the hydrodynamic pressure of damping mechanism D, traction friction mechanism F1 thereby had the ability of skidding of can transshipping, until during frictional connection device S1 rigidity wedging.Therefore, in coasting mode, no matter be, because give it the gun, or because utilize the Reduced Speed Now of engine braking, the again wedging/engaging process of frictional connection device S1 on two circumferencial directions, all by the process that is flexible engagement, can not produce mechanical impact, or, significant torque shock ends.As long as set the relevant parameter of damping mechanism D, the damping process of frictional connection device S1, can be just process irrelevant with operator and that only undertaken by the prior wish of artificer.

And at frictional connection device S1 end joint/wedging as above and start to surmount in the process of rotation, be pulled the intermediate piece 90 that friction mechanism F1 drives, guiding element 50 first is relatively turned back to the circumferential relative position that it trackslips before climbing.Accordingly, the spring 22 of damping mechanism D, by piston 20 elasticity extrapolations and again conflict in circumferential wall 85, also by above-mentioned fluid via the gap between the inner and outer circumferential surfaces of intermediate piece 90 and tubular matrix 76, sucker hole 24.Thereby cause damping mechanism D to get back to standby condition, wait for the beginning of damping process next time.

So far be not difficult to find, torque is all transmitted via face contact friction is secondary in frictional connection device S1, on its bang path, there is not any discrete elements, there is not any frictional force relevant to centrifugal force, more there is not any revolving member and any uneven radial force or its component that can not balance, all active forces only have axial thrust load and/or circumferential component, and the effective object of these two component all has high axial and/or circumferential rigidity.Therefore, relatively prior art can flexible combination auto-controlled clutch/connector, frictional connection device S1 except have above the advantage described in two basic patent applications of whole combination, obviously also there is transmission capacity and the working life of at least multiplication, and, simpler structure, less axial/radial size, less quality, is easier to regulate and controls, and be easier to hugeization and microminiaturized advantage.

Should be noted that, for seeking larger design freedom and making the easier wedging of space wedge mechanism or separate wedge, the present invention also has the technological means of various lifting limiting angle ζ and ξ numerical value.Comprise, the guide surface 54 and 94 that rotates guide mechanism G is arranged to oblique helical tooth flank, the rubbing

surface

72 and 104 of traction friction mechanism F1 is arranged to frusto-conical surface, cause in shaft section guide surface 54 and 94 or rubbing

surface

72 and 104 be not equal to 90 degree with angle/half cone-apex angle of axis X, and equal 0～180 other value of spending; Traction friction mechanism F1 is arranged to many friction disk types friction mechanism; And, the material or the element that possess larger friction factor are attached at least one in rubbing surface 72 and 104.Here should be incidentally, this specification has provided literal definition clearly and the explanation about limiting angle ζ and ξ, and without paying any performing creative labour, those of ordinary skill in the art all can derive its functional relation/formula accordingly.

From general knowledge, torque capacity/transmission capacity of frictional connection device S1 reduce axial tension force when increasing equivalent diameter, traction friction mechanism F1 and power transmission friction mechanism F2 also can be according to known technologies, therefore be set to respectively or simultaneously as described above many friction disk types friction mechanism, and there is more than one one group of traction friction pair or power transmission friction pair.

In addition, described in definition, the present invention does not make concrete restriction to rotation guide mechanism G and guiding

tooth

52,92 thereof, and it must not have best helical tooth structure, must not have the complementary guiding flank of tooth yet.Therefore, this guide mechanism G and guiding tooth thereof and the guiding flank of tooth can have and possess arbitrarily form and the shape of rotating guide function.Guiding tooth can be arranged on end face/side face by discrete form, also can, by such as single head or multiple-threaded mode, circumferentially be arranged on corresponding inside/outside side face to continuity.And rear a kind of setting in form, it can be arranged to have the helical tooth such as rectangle, trapezoidal, zigzag fashion or triangle prismatic shapes best.As a same reason, as long as can realize best axial complementary laminating/conflict, the tapering shape rotary type rubbing surface of two groups of revolution friction pairs separately of traction friction mechanism F1 and power transmission friction mechanism F2, can form based on the revolution of arbitrary curve/bus, and can be the discontinuous surface being provided with in order to the groove of heat radiation or eliminating liquid/gas.

Diagram and explanation about the more multiple changing type of axial force enclosed construction and ring-type bag shape member, can referring to above two basic patent applications of whole combination, and the technological scheme announced in being in full incorporated into this Chinese patent literature CN102537126A of the applicant, the application is not described further herein.

Should be noted that, when frictional connection device S1 is used as to the glider of motor vehicle, should be best by the trigger switch of coupling pattern and the interlock of reversing gearshift mechanism.In addition, also can setting example as machinery or electric diverter switch, by its Working mode set, be mono-directional overrun clutch or coupling.And, also the pattern manually or automatically that comprises electrical actuator can be set further.In automatic mode, trample each time the action of brake petal, all will cause in linkage frictional connection device S1 synchronously to proceed to or remain in the mode of operation of coupling, thereby can utilize the auxiliary brake function of motor, and the action of step on the accelerator each time all will cause frictional connection device S1 to enter or remain in the mode of operation of free wheel device/glider in linkage.

In the present invention, damping mechanism D is obviously not limited to a kind of pattern and the setting position shown in the present embodiment.On the contrary, it can have any needed pattern and setting position, referring to follow-up explanation, as long as it is arranged on the rotation path of two

lead tooth

52 and 92 or 62 and 232 of rotating guide mechanism G or SG directly or indirectly, or on axially movable path, thereby can delay the relative rotation speed between inconsistent guiding tooth or move axially.It can be arranged on directly or indirectly two circumferentially in relative rotation between member or outside, comprise respectively or be arranged on simultaneously both axially, circumferentially or radially.And, in the application that only needs unidirectional wedging and one-way flexible to engage, more a damping mechanism D can be only set.

For example, the damping mechanism Da in Fig. 4 B and the piston hole 24 of Db, be roughly tangentially symmetricly set in two circumferential flank surface 116 of the arm of force 95, and piston 20 wherein is flexibly conflicted to force-bearing pin 30.This force-bearing pin 30 is axially dodged through hole through being positioned on the arm of force 55 slidably, is axially penetratingly fixedly attached to the corresponding axial bore that is arranged in entrance 82 axial both ends of the surface.Damping hole 26 is extended to the surface of the arm of force 95 by the bottom of piston hole 24.Correspondingly, circumferential flank surface 116 becomes the radial mode shown in Fig. 4 B from tangential type.

With just in time contrary shown in Fig. 4 A～4B, the piston hole 24 of the damping mechanism D in Fig. 4 C, is arranged on the damping device 40 being fixedly linked with limiter element 180.This damping device 40 is to have the roughly arc piece of complementary structure with entrance 82 in a cross section, and it is fixed into one by the axial force-bearing pin 30 through its circumferential both sides with limiter element 180.The circumferential center of damping device 40, is provided with a radial mode square hole circumferentially extending, and two piston holes 24 are separately positioned on two circumferential walls of this square hole symmetrically.The arm of force 95 that is arranged in this square hole, is modified to the radial protrusion that a peripheral side is arc-shaped curved surface.In to the circumferential compression process of piston 20, this arc-shaped curved surface can be guaranteed conflict point between the two, is positioned at all the time in the head end of piston 20, and can not arrives the edge of this end face.Be arranged on the damping hole 26 of piston hole 24 bottoms, can directly extend to outer circumferential face, also can extend to as shown in Figure 4 C circumferential end faces, and by damping device 40 and the circumferential gap of 85 of walls, be communicated to sunset circle.

Fig. 4 D shows another modification of damping mechanism D.Wherein, damping device 40 has H character form structure as shown in Figure 4 E, have respectively to two four lugs 42 that circumferentially extend and 46, and two therebetween circumferential extended grooves 48.Four force-bearing pins 30 that are arranged on entrance 82 axial both ends of the surface, are extended to respectively in four corresponding pin-and-holes 44 by axial two ends, and damping device 40 and limiter element 180 are fixedly linked.Accordingly, the arm of force 95 is modified to two arm of

force

95a and 95b because having central gap, is arranged in accordingly respectively

groove

48a and 48b, and its radial mode inner side surface is conflicted respectively to piston 20a and 20b.Piston hole 24a and the 24b mode to be axially staggered, is roughly tangentially arranged on respectively on the circumferential wall of

groove

48a and 48b.

In addition, for example in Fig. 4 A, piston 20 obviously also can be arranged on circumferential wall 85, and the damping hole 26 in Fig. 4 B～4D obviously also can be arranged to have the screw of conical nose, to facilitate the valid circulation area in damping adjusting hole, thereby change the damping corresponding time of process.

As a same reason, the C of attitude reference device also can have any needed pattern and setting position, as long as it is connected to respectively two guiding

teeth

52 and 92 that rotate guide mechanism G directly or indirectly, can limit the circumferential position of intermediate piece 90 relative guiding elements 50.Comprise and only there is an eccentric shaft type projection, and an axialmode cotter way formula embeding mechanism that is arranged on the cylinder cellular type groove on guiding element 50 for example.Even if cotter way formula embeding mechanism, its at least one projection and at least one groove, also can be separately positioned on intermediate piece 90 and guiding element 50 at least indirectly.More orientation scheme, can be incorporated into this Chinese patent application 201010624777.7 and 201210242218.9 in full referring to the applicant, do not do too much explanation herein.

It is important to point out, can be without for example elastic element of spring 100 in the present invention, available simple circumferentially Compress Spring replaces damping mechanism D, can before frictional connection mechanism enters rigidity wedging/jointing state, bring into play elastic damping effect equally.Although the weak effect of flexible engagement some, at least can there is the effect of circumferential damping, can play the effect of the mechanical shock when relaxing frictional connection device for example S1 engaging.

Embodiment two: the self-controlling spatial-wedging friction connector S2 of flexible engagement

The frictional connection device S1 that is different from circumferential damped type, the frictional connection device S2 of modification has axial damping mode.Accordingly, its lift angle λ that rotates guide mechanism G should meet the requirement of ζ < λ≤ξ best.

Referring to Fig. 5, damping mechanism D is one and take ring-type cylinder-piston mechanism that limiter element 180 is cylinder body.It comprises, is arranged on and supports the stepped cylindrical groove that side is inwardly encircled in end face 189 footpaths, and in order to form two inner cylindrical wall faces of sealed cavity, and, on the air-ground outer circumferential face that is enclosed within the second axle 210 that can trackslip and be provided with the annular piston 140 of end face flanged ring 142., two corresponding outer circumferential faces on annular piston 140, can trackslip and be connected to above-mentioned two inner cylindrical wall faces, and form the ring-type damping cavity 144 of cylinder-piston mechanism.Spring 100 is arranged in this damping cavity 144, and damping hole 26 is radially arranged on the inner peripheral surface of flanged ring 142.

In addition, owing to circumferential damping mechanism must not being set, naturally also just the arm of force 95 must be set, therefore, guide protrusions 132 is modified to a flexible straight steel wire best.

By above stated specification, easily understand, in the engaging process of frictional connection device S2, increase gradually due to the elastic force of spring 100, and in damping cavity 144 hydrodynamic pressure to relatively rotate the tension force that guide mechanism G produces relatively little, must cause its frictional connection mechanism in elasticity wedging state, traction friction mechanism F1 is by the flexible engagement process of trackslipping in friction because of overload.And little by little flow out along with above-mentioned tension force causes fluid in damping cavity 144, respective pistons ring 140 will little by little be compressed, spring 150 little by little pushes away intermediate piece 90 by the while, the axial clearance producing will cause guiding element 50 to rotate relative to intermediate piece 90 naturally, thereby remain the friction conflict between guide surface 54 and 94, until spring 100 is compressed into the limit.After this, frictional connection mechanism connects the closed conflict of the axial force that proceeds to as described above rigidity, and frictional connection device S2 finishes flexible engagement process, enters in the insertion type clutching operation of rigidity.

Should be pointed out that in passing, in assembly process, must good spring 100 first in place and piston ring 140, the guiding element being pre-installed 50, intermediate piece 90 and friction member 70 etc. radially could be inserted in groove 78 by entrance 82 afterwards.

Embodiment three: the self-controlling spatial-wedging friction connector S3 of flexible engagement

Referring to Fig. 6, frictional connection device S3 is the simple variant to frictional connection device S1, that is, exchange the position relationship of intermediate piece 90 with guiding element 50, thereby caused limiter element 180 and intermediate piece 90 non-rotatably to connect into a combined type bag shape intermediate piece.For this reason, spring 100 is arranged between intermediate piece 90 and limiter element both sides' support end face 91 and 189, the interior ring side of guiding element 50 is provided with to trackslip and extends to the tubular matrix 60 in intermediate piece 90 endoporus, and tubular matrix 76 can trackslip and extend in inner peripheral surface 84b in the opposite direction.Correspondingly, damping mechanism D is arranged on the circumferential both sides of the arm of force 55, with delay guiding element 50 relative to circumferential the rotating of fixing limiter element 180 of intermediate piece 90.Relevant set-up mode is quite analogous to shown in Fig. 4 A～4D.

Undoubtedly, the lift angle λ that rotates guide mechanism G is still set to, 0 < λ≤ζ.

The working procedure of frictional connection device S3 and frictional connection device S1 all fours, repeat no more in this.

Embodiment four: the self-controlling spatial-wedging friction connector S4 of flexible engagement

Referring to Fig. 7, frictional connection device S4 is still the simple variant to frictional connection device S1.

First, spring 100 and guiding element 50 axially between, be provided with and can do limited rotation and can conflict to the roughly toroidal support 220 of guiding element 50.The interior ring side of this supporting element 220 is provided with to trackslip and extends to the tubular matrix 226 in guiding element 50 and intermediate piece 90 endoporus, and tubular matrix 76 can trackslip and extend in inner peripheral surface 84b in the opposite direction.Wherein, supporting element 220 forms steerable stepless supporting mechanism SS with guiding element 50, spring 100 and limiter element 180.This supporting mechanism SS is one take supporting element 220 as intermediate piece and has another space wedge mechanism of limiting angle ζ ' and ξ ', and it is provided with two-way rotation guide mechanism SG best.Two groups of guiding teeth 62 and 232 that there is all fours of complementary structure or be equal to guiding

tooth

52 and 92 of the SG of this mechanism, be separately positioned on supporting element 220 and the opposed facing annular end face as the guiding element 50 of supported, so that both rotations guide to conflict, be connected.Wherein, the lift angle λ ' of the guide surface of lead tooth 62 and 232 is less than ξ ', and the definition of ζ ' and ξ ' is the same.

For driving and allow guiding element 50 to move axially, on the outer circumferential face of supporting element 220, be provided with best the arm of force 222 that radially extends to its outer rim along entrance 82.This arm of force 222 has suitable intilted circumferential flank surface, can make to form best running clearance between two circumferential walls 85 of this arm of force 222 and entrance 82, and guarantee that the relative limiter element 180 of supporting element 220 has enough circumferential degrees of freedom ε ".Obviously, this circumferential degrees of freedom ε " has and is quite analogous to the above-mentioned requirement that arranges to circumferential degrees of freedom ε ', namely should be able to guarantee that the work rotation of rotating guide mechanism SG is not hindered by circumferential wall 85.Like this, relative limiter element 180 rotatable support 220, just can be at circumferential degrees of freedom ε " within, by supporting end face 224 and guiding tooth 232, on one side axial compression spring 100, the on one side supported height of adjustable guiding part 50/pushed away from distance infinitely.This adjusting can promote guiding element 50 intermediate piece 90 and friction member 70 are seamlessly compressed rigidly/conflict on power transmission rubbing surface 58 after first elasticity, or after first rigidity, flexibly cancel this compress/conflict state, thereby the closed conflict of the axial force of forcibly setting up or cancel frictional connection mechanism connects, and force space wedge mechanism on two circumferencial directions, to enter reliably immediately wedge or separate wedge.Wherein, the Topland of the guiding tooth 232 of supporting element 220, be subject to the axial restraint of position limit pin 176, the precompression that can implement in similar embodiment one spring 100, to guarantee that guiding element 50, intermediate piece 90, the axial freedom/gap of friction member 70 in circumferential recess 78 are greater than zero.。

Secondly, damping mechanism D is arranged on the circumferential both sides of the arm of force 222, with delay supporting element 220 relatively with the rotating of the circumferential fixing limiter element 180 of guiding element 50.Set-up mode is similar to Fig. 4 A～4D.

Again, for realizing flexible engagement, two rotation guide mechanism G in the present embodiment and lift angle λ and the λ ' of SG, should have such parameter setting best, that is, and and ζ < λ≤ξ, and, 0 < λ '≤ζ '.

So, when frictional connection device S4 is the same with frictional connection device S1, during as the controllable slide device of motor vehicle for example, for the first axle 200, be coupled to the setting of motor, in the resilient engagement stage of frictional connection device S4, traction friction mechanism F1 will skid naturally because of overload.And the friction torque that this skids will cause the rotation guiding friction pair rotating in guide mechanism SG relatively trackslip and climb.On the one hand, this trackslips and climbs Compress Spring 100 infinitely to increase gradually axial tension force, thereby increase gradually the formula of the trackslipping friction torque that frictional connection device S4 transmits, on the other hand, this trackslips and climbs and also will be subject to the restriction of damping mechanism D, thereby guarantees that joint/wedging process of frictional connection device S4 has soft closing property fully.Other process is similar to, and no longer repeats.

Easily understand, the present invention can set and adjust dynamics and the time of the flexible engagement of frictional connection device in advance, namely can set in advance and regulate the Changing Pattern of its formula friction torque of trackslipping.Therefore, this characteristic is particularly advantageous in the transmission that must have higher engagement torque and don't allow to occur the self-controlling frictional engagement of joint impact.For example, for the application of the service brakings of jacking equipment such as traction type elevator car, escalator and/or the frictional connection of self-controlling emergency braking, and large-scale or heavily loaded surmount transmission application, the heavily loaded check application in field, mine.

Below be only to the present invention is directed to description and the diagram that its limited embodiment gives; there is particularity to a certain degree; but it should be understood that; mentioned embodiment and accompanying drawing be the object for illustrating only all; and be not used in, limit the present invention and protection domain thereof; its various variations, the layout that is equal to, exchanges and change structure or each member, all will be considered to not be separated from the spirit and scope of the present invention's design.

Claims

1. a self-controlling spatial-wedging friction connector for flexible engagement, comprising:

Around an axis revolution and at least one traction friction mechanism that can axial engagement, it has the intermediate piece that is at least roughly ring-type and the friction member that turns round and be provided with rubbing surface around described axis, to transmit friction torque between this two member;

For described traction friction mechanism provide engaging force and around described axis rotating at least one rotate guide mechanism, it has the guiding element that is at least roughly ring-type and the described intermediate piece that turns round and be provided with corresponding guide surface around described axis; And

A bag shape member, in order to the closed conflict of axial force of setting up between described guiding element, described intermediate piece and described friction member, connect, and be non-rotatably connected with described guiding element or described intermediate piece, it is provided with the inner peripheral surface around the rotating at least roughly half cycle of described axis, and is positioned at the circumferential recess of the roughly half cycle on this inner peripheral surface and by the outer circumferential face of described bag shape member, is communicated to the entrance of this circumferential recess;

It is characterized in that:

Also comprise at least one damping mechanism, it is arranged between described guiding element and described intermediate piece at least indirectly; And

At least one elastic element, it is arranged between two axial resistance surfaces of at least one axial end of described rotation guide mechanism, to form flexible axial seal force;

When described guiding element and described friction member can be driven while connecting into a friction piece by described intermediate piece, the lift angle λ at the mutual conflict position between described guiding element and described intermediate piece both sides' described guide surface, be greater than zero and be less than or equal to ξ,, 0 < λ≤ξ, wherein, ξ is the maximum value that can make the described lift angle λ of the guiding friction pair self-locking that is formed at described conflict position.

2. by frictional connection device claimed in claim 1, it is characterized in that: also comprise the elasticity pre-tightening mechanism at least with an elastic element, it is for keeping constantly the frictional connection between described intermediate piece and described friction member.

3. by the frictional connection device described in claim 1～2 any one, it is characterized in that: on the outer circumferential face of described guiding element or described intermediate piece, be provided with the arm of force radially extending to described entrance.

4. by the frictional connection device described in claim 1～3 any one, it is characterized in that:

Also comprise the stepless supporting mechanism arranging around described axis, it is arranged between described limiter element and supported, axially to go up this mode of supported of moving in stepless way, set up described limiter element and be connected with the closed conflict of axial force between described guiding element, described intermediate piece and described friction member;

Wherein

Described stepless supporting mechanism has around described axis setting and is at least the roughly supporting element of ring-type, and it is by axially conflicting and rotating two kinds of Placements of guiding, is connected to respectively described limiter element and described supported;

Described supported is that being non-rotatably connected with described limiter element in described guiding element, described intermediate piece and described friction member;

Described damping mechanism is arranged on circumferentially or axially of described limiter element and described supporting element.

5. by the frictional connection device described in claim 1～3 any one, it is characterized in that: described damping mechanism is arranged between described guiding element and described intermediate piece at least indirectly, or, described limiter element and being non-rotatably connected between the described guiding element or described intermediate piece of this limiter element.

6. by the frictional connection device described in claim 1～5 any one, it is characterized in that: also comprise attitude reference device, it is for being operationally limited to described intermediate piece at least two different circumferential zones of relatively described guiding element, to limit the described intermediate piece direction that relatively rotates of described guiding element of can circumferentially conflicting, and stipulate the corresponding circumferencial direction of guided rotation of described rotation guide mechanism.

7. by frictional connection device claimed in claim 6, it is characterized in that: described attitude reference device is cotter way formula embeding mechanism, it has at least one projection and at least one groove, is at least indirectly separately positioned on described intermediate piece and described guiding element.

8. by described in claim 1～7 any one, it is characterized in that: described traction friction mechanism is many friction disk types friction mechanism, it has two groups of axial staggered each at least one friction plates that are non-rotatably connected respectively with described intermediate piece with described friction member.

9. by described in claim 1～7 any one, it is characterized in that: described power transmission friction mechanism is many friction disk types friction mechanism, it has two groups of axial staggered each at least one friction plates that are non-rotatably connected respectively with described guiding element with described friction member.