CN103527687B

CN103527687B - Space wedge type electronic control clutch

Info

Publication number: CN103527687B
Application number: CN201310294195.0A
Authority: CN
Inventors: 洪涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-03
Filing date: 2013-07-03
Publication date: 2018-06-22
Anticipated expiration: 2033-07-03
Also published as: CN103527687A

Abstract

The electric control clutch of the present invention includes two parts, for the full contact type head tail autoexcitation space wedge mechanism that torque is transmitted, frictional force be adaptive to the torque that it is transmitted and, enter wedge control mechanism in response to electric signal.This enters wedge control mechanism and includes, and driving space wedge mechanism with triggering mode enters wedge or the stepless supporting mechanism of rotation guide type for removing wedge and in response to electric signal and passes through the electrical actuator that actuating mechanism activates the stepless supporting mechanism.The electrical actuator is a mechanism for including solenoid or motor, for the motivator in electric control clutch engagement with one smaller pulsed of offer when detaching change working, space wedging mechanism to be caused to enter wedge or removes wedge.Therefore, compared with the prior art, electric control clutch almost not power consumption of the invention, also almost without corresponding calorific value, but torque capacity at least doubles in units.Moreover, volume and weight smaller, cost are lower.

Description

Space wedge type electronic control clutch

Related application

The application is as the applicant disclosed in patent document WO2012/089131A1 and WO2011/000300A1 The subordinate patent application of basic patent application, also, this application claims the Chinese patent applications that the applicant proposes 201210242218.9 priority.The full content of three first patent applications of the disclosure is incorporated herein by reference.

Technical field

Present invention relates in general to a kind of conveying rotary motion or torque in a manner of frictional connection in all transmission fields, Or the frictional coupling device of the rotary motion or torque is prevented, including clutch and brake and include the attachment device The device such as clutch motor and brake type motor, it is more particularly to a kind of to be acted in response to electric signal and/or electric flux Maneuvering clutch and brake.

Background technology

All it is using electromagnetic force as connecing in general, in the prior art with electric signal and/or the relevant frictional connectors of electric flux The control type electromagnetic clutch and electromagnetic brake of resultant force or separating force.Naturally, engaging force and the transmission of this frictional connectors Ability, depends entirely on the size of electromagnetic force, that is, depends entirely on the size of electric current or electrical power.Moreover, therein rub Also exist between wiping element and halfway problem is detached due to remanent magnetism.Therefore, the product of the prior art is smaller with transmission capacity, The shortcomings that power consumption is excessive, and fever is serious, and radial dimension is larger, and consumption non-ferrous metal is excessive and cost is excessively high.

Invention content

This invention address that device of the design based on brand new technical principle, to avoid disadvantages mentioned above.

It engages or detaches in response to electric signal and/or electric flux the technical problem to be solved in the present invention is to provide one kind , but the space wedge type electronic control clutch that transmission capacity is unrelated with electric flux.It is sensitive quick with action response, transmission The advantages of ability and transmission efficiency higher, energy consumption and calorific value smaller.

In order to solve the above technical problems, the space wedge type electronic control clutch of the present invention includes, around axis revolution and can At least one traction friction mechanism of axial engagement has and at least big of rubbing surface is turned round and be both provided with around the axis It causes as cricoid intermediate piece and friction member, it is secondary that the rubbing surface of both sides can form at least one traction friction with axially offseting；For this Traction friction mechanism provides engaging force and around at least one rotation guiding mechanism of above-mentioned axis revolution, has around above-mentioned axis At least substantially ring-like guide part and intermediate piece of corresponding guide surface is turned round and is both provided with, the guide surface of both sides can axial phase Guiding friction pair is formed to ground；And by be operatively controlled intermediate piece enter wedge reconciliation wedge in a manner of, control electric control clutch Engagement with detaching in response to inputting electric signal inside it and act enter wedge control mechanism；Wherein, guiding friction pair The lift angle λ at position is mutually contradicted, more than zero and less than or equal to ζ, that is, 0 ＜ λ≤ζ, ζ is can to cause guiding friction pair and traction The equal small end endpoint value in the value open interval of the lift angle λ of not self-locking in the secondary circumferential direction of friction.

It should be strongly noted that the meaning of related notion used in present specification or term is as follows：

Rotation guiding mechanism：Circumference is converted to the guiding including at least axially opposing movement or mobile trend Mechanism.For example, the slide roll spiral of helix angle strict conformance and not strict conformance or part helix mechanism, radial peg Groove mechanism, end face wedge mechanism, end face embeding mechanism, end ratchet mechanism and, cylinder end cam mechanism.

Space wedge mechanism：The composite structure being made of rotation guiding mechanism and traction friction mechanism.

Enter wedge：Also referred to as wedging, with solution wedge/remove wedge on the contrary, being exactly that intermediate piece 90 can drive guide part 50 and friction member 70 Ground connects/is combined into the course of work and state of a friction piece.

ζ and ξ：The Important Limit angle of space wedge mechanism, intermediate piece 90 as shown in Figures 1 to 3, on the one hand, rubbed by it Wiping face such as 104 and at least axial conjunction for contradicting, the normal pressure at position being contradicted with formation of traction friction surface 72 of friction member 70 One group of traction for including at least one friction that power W is not orthogonal to the rotary type traction friction mechanism F1 of axis of rotation X is secondary；It is another Aspect, by its guide surface towards a certain circumferencial direction such as 94a, guide surface such as 54a corresponding to guide part 50 is at least It is axial to contradict, the rotation guiding mechanism G of axis of rotation X is not orthogonal to extremely with the resultant force N for forming the normal pressure for contradicting position Include one group of guiding friction pair of one less；The common tangent at the conflict position and the angle of the plane perpendicular to axis of rotation X The lift angle λ of average value, referred to as the conflict position；It is such as pre-tightened in another aspect, can also have been acted on by other surfaces for elasticity Or other active forces of limiting purpose；It is oriented in operating mode in the rotation of rotation guiding mechanism G, that is, guide part 50 starts to continue Ground has in driving intermediate piece 90 trend that arrow P direction relative frictions part 70 rotates along such as Fig. 3, it can be ensured that leads The minimum lift angle that position is contradicted to the both sides surface of the secondary self-locking of friction is defined as ζ, and maximum lift angle is then defined as ξ.This two A limiting angle defines 90 counter-guide 50 of intermediate piece and rotates forward, is stationary and rotate backward every completely Forms of motion.Concrete meaning is as follows：

1st, as 90 degree of ξ ＜ λ ＜, guiding friction pair and traction friction pair are unable to friction self-locking, pass through guiding friction pair Normal pressure N or its component Q and T, guide part 50 and friction member 70 both intermediate piece 90 can be caused opposite forward that is, arrow Head P directions are trackslipped and are squeezed out.Therefore, guide part 50 and friction member 70 cannot be by 90 wedgings of intermediate piece into a friction piece. Only because pressure N is originated from non-resilient power or is limited from elastic force but by element structure, intermediate piece 90 is just caused only to be led The friction of relative friction part 70 is pushed to trackslip to part 50 and do not squeezed out actually.

2nd, as ζ ＜ λ≤ξ and λ ＞ 0, traction friction pair has breaks through itself static friction state/resistance prior to guiding friction pair The characteristic of power and entrance sliding friction state.Therefore, intermediate piece 90 can rub guide part 50 with 70 wedging of friction member into one Rub body, but when 70 counter-guide 50 of friction member overloads, traction friction pair will break through its static friction state/maximum static friction Resistance and be normally transferred to sliding friction state, and guiding friction pair then when not breaking through its static friction state/resistance also always In constant self-locking state.Accordingly, space wedge mechanism is in half wedging state, and freewheel clutch is in and non-fully engages State.

3rd, when 0 ＜ λ≤ζ (situation for being directed to ζ ＞ 0), guiding friction pair is quiet with itself is broken prior to traction friction anapophysis The characteristic of Frotteurism/resistance and entrance sliding friction state.Therefore, intermediate piece 90 can be by guide part 50 and 70 wedge of friction member Synthesize a friction piece, but when 70 counter-guide 50 of friction member overloads, guiding friction pair will break through its static friction state/ Maximum static friction resistance and cause intermediate piece 90 that there is counter-guide 50 to trackslip the trend climbed, and it is secondary then because going back to draw friction Its static friction state/resistance is not broken through and is in constant self-locking state always.However, since above-mentioned climbing trend is by space wedge The axial force enclosed construction of shape mechanism rigidly prevents (except non-pressure N is originated from elastic force), and therefore, guiding friction pair is by actually strong Maintain the general static friction state for being equal to self-locking to property processed.That is, intermediate piece 90, guide part 50 and 70 three of friction member are strong Wedging processed/be combined into a rotation entirety, is not in the situation mutually trackslipped and climbed, except non-overloaded to structure damage.Space Absolute self-locking wedging state of the wedge mechanism thus in similar diagonal-bracing type freewheel clutch, transmission capacity are only dependent upon knot Structure intensity.

By common sense it is found that λ is equal to the situation of ζ, that is, traction friction is secondary and guiding friction pair can be broken through respectively simultaneously The situation of static friction state/resistance and entrance sliding friction state, exists only in and theoretically may be not present in reality.Namely Say, because cannot self-locking simultaneously due to the inevitable friction of trackslipping always there is one group of not self-locking it is secondary, space wedge mechanism, which is transmitted, to be turned The physical essence of square can only be the friction self-locking of friction rather than prior art identification.But limiting angle ζ is not by prior art theory Recognized, can not be enlightened, imagine or be disclosed by the movement relation of the plane wedge mechanism as special case, it can not be by it Structure is derived.Therefore, before document CN101936346A discloses above-mentioned cognition, it is not known that the presence of limiting angle ζ and object The prior art of reason meaning just can not thoroughly recognize the actual physical meaning of limiting angle ξ that is, the angle of wedge, trackslip including friction Normality, unlikely find, disclose and confirm space wedging physical essence, and and then obtain the application based on space wedge The technical solution of shape mechanism.

Obviously, above-mentioned lift angle λ is exactly the angle of wedge of space wedge mechanism, also referred to as wedging angle/choke angle, and only in 0 ＜ λ≤ξ When, space wedge mechanism can wedging, electric control clutch can engage.

Electromagnetic clutch and brake compared with the prior art etc., electric control clutch according to the present invention, because it only connects It closes or separating action is in response to the signal and/or electric flux related with electricity, and frictional force/torque is adaptively relevant to and is passed The torque passed, and electric flux wide of the mark, so as to be provided with action response sensitive quick, transmission capacity and transmission efficiency higher, The advantages of energy consumption and calorific value smaller.With the help of the description and drawings of the following embodiments, objects and advantages of the present invention will seem more It is clear and clear.

Description of the drawings

Fig. 1 is the schematic, exploded perspective view that the space wedge type electronic control clutch embodiment one of the present invention simplifies.

Fig. 2 is the axial sectional view of the space wedge type electronic control clutch embodiment one of the present invention.

Fig. 3 is the profile of Tu2Zhong Ge mechanisms to the local expansion figure of same external cylindrical surface radially projecting.

Fig. 4 is the axial sectional view of two simplification according to an embodiment of the invention.

Fig. 5 is the axial sectional view of three simplification according to an embodiment of the invention.

Fig. 6 is that the schematic development views for actuating the simplification of Y-direction after ring are eliminated in Fig. 5.

Fig. 7 is according to an embodiment of the invention four axial sectional view.

Fig. 8 is the right side view of relay ring gear in Fig. 7.

Fig. 9 is the schematic expanded view of electrical actuator part in Fig. 7.

Figure 10 is the schematic local expansion figure of the simplification of the radially projecting of Z-direction in Fig. 7.

Figure 11 is the schematic, exploded perspective view of actuating mechanism in Fig. 7.

Figure 12 is the axial sectional view of five simplification according to an embodiment of the invention.

Figure 13 is the rough schematic view of V-V sections in Figure 12.

Figure 14 is to rotate the axial sectional view of the embodiment of the present invention six that represents of section with D-D in Figure 15.

Figure 15 is the rough schematic view of E-E sections in Figure 14.

Figure 16 is the schematic, exploded perspective view of pawl Option stage in Figure 14.

Figure 17 is according to an embodiment of the invention seven axial sectional view.

Specific embodiment

Necessary explanation：For simplicity, in the text and all attached drawings of this specification, the same or similar component and feature Position is using identical reference numeral, and only give necessary explanation when they first appear or have variations.Equally, The working mechanism or process of the same or similar mechanism of not repeated explanation.It is arranged on for difference identical on symmetrical or corresponding position Component or characteristic portion, this specification attached letter behind its reference numeral, and when there is a general or no difference, then Do not add any letter.

Embodiment one：Axial actuation space-like wedging type electric control clutch C1

Fig. 1~3 are illustrated that the embodiment of the present invention one, including axial force-closed function is formed and had around axis X Limiter element 180.The limiter element 180 is most preferably a ring-type pocket member, the inner peripheral surface 84 formed around axis X Axial middle part is coaxially provided with most preferably as the disk-shaped annular circumferential recess 78 of plane.The pact of the circumferential recess 78 half The inner surface in week, the tangential direction H and H ' being most preferably mutually parallel along two extends to the peripheral surface of limiter element 180, and is formed Prismatic rectangle entrance 82 (referring to Fig. 1,15).The inner radial surface 80 of circumferential recess 78, thus extend into U-shaped horizontal stroke The non-closed inner radial surface of cross sectional shape, and form two circumferential walls 85 being mutually parallel.It can trackslip successively in axial direction Intermediate piece 90 that ground is arranged on 60 peripheral surface of tubular matrix that 50 inner ring side of guide part extends towards inner end substantially annular in shape rubs Part 70 and support element 220 are wiped, hollow arrow direction, 50 one of companion guide part can be directly brought into along Fig. 1 by entrance 82 Circumferential recess 78, and by it is axial can be trackslipped through the first axle 200 in 180 endoporus of limiter element, be radially positioned in axis X On.And first axle 200 is rotatably respectively supported at two inner peripheral surface 84a of limiter element 180 then by two bearings 158 On 84b, and by the connection mode of such as flat key or spline pair etc, non-rotatably it is connected to the inner circumferential of tubular matrix 60 Torque is transferred into and out electric control clutch C1 by face.

It is to realize the present invention herein it should be pointed out that circumferential recess 78 is annular in shape and entrance 82 is in cross-section rectangle Best but and nonessential setting.In fact, if above-mentioned guide part 50 and intermediate piece 90 etc. can be included in, 78 He of circumferential recess Entrance 82 can have arbitrary shape and unequal section.As a same reason, the inner peripheral surface 84 of limiter element 180 is also not necessarily to circumferential envelope It closes and corresponding to through endoporus, can be in such as substantially U opening shape of half cycle and corresponding to a blind hole completely, as long as The circumferential direction that the substantially half cycle of such as revolving member of intermediate piece 90 etc can be provided to store on the inner peripheral surface 84 is recessed Slot 78.

Obviously, axial force-closed cyclic annular pouch-shaped limiter element 180 can also be a combined member, and entrance 82 also may be used To be closed at least partly.For example, by the fastening means such as welded, rivet or be bolted etc, one is had The cupuliform shell-type limiter element axial restraint of center hole is connected to the end face of a dish type annulus, and limit circumferential recess 78. For another example, by such as weld, at least one circumferential band is set with interference in the middle part of including axial direction and/or on the peripheral surface of outer end Or ring gear etc is fastenedly connected mode, it will be radially at least substantially symmetric, and it is both provided with semicircle on semicircle inner headed face Two semicircle shell-type limiter elements of circumferential slot, are butted into a combination for limiting complete circumferential recess 78 radially fixedly Formula ring-type limiter element.It of course, if required, also can be in the radial direction one of the interface of such as two semicircle shell-type limiter elements End most preferably sets the smaller radial through-hole of circumferential span of a similar entrance 82.Dependency structure is described in more detail and schemes Show, reference can be made to the two basic patent applications integrally combined above, are not repeated to illustrate herein.

With continued reference to Fig. 1~3, there are one the flanges for extending radially to 82 outer rim of entrance for setting on the peripheral surface of friction member 70 The formula arm of force 75.The arm of force 75 and entrance 82 most preferably have a complementary cross-sectional shape, two circumferential flank surface 73 respectively with Two circumferential walls 85 are engaged/are contradicted simultaneously, and friction member 70 is caused non-rotatably to connect into one with limiter element 180 and is combined Formula pouch-shaped friction member.On inner face most preferably in the ladder outer shroud of the guide part 50 of stepped annular, it is provided with one group most preferably The bidirectional screw circumferentially uniformly distributed around axis X is tooth-like to be oriented to tooth 52.Correspondingly, intermediate piece 90 on the end face of guide part 50, It is provided with being oriented to one group spiral tooth-like guiding tooth 92 of the tooth 52 in complementary construction.It is unvaryingly chimeric with 92 to be oriented to tooth 52, structure Into most preferably around the face contact-type Double-directional rotary guiding mechanism G of axis X revolution.

In addition, intermediate piece 90 is by the revolution rubbing surface 104 in its anodontia end face, it can be with most preferably setting in complementary fashion The friction of rotary type traction friction surface 72 on 70 opposing end surface of friction member is connected, and forms revolving molding surface contact traction friction mechanism F1.And guide part 50 is by the power transmission rubbing surface 58 in its anodontia end face, can with being arranged on an inner face of circumferential recess 78, Namely the circular disc-like end portions 188b inner faces of limiter element 180 power transmission rubbing surface 74 friction be connected, form respectively with Guide part 50 and friction member 70 are non-rotatably combined together, and directly transmit the revolving molding surface of friction torque between the two Contact power transmission friction mechanism F2.Traction friction mechanism F1 and rotation guiding mechanism G collectively constitute face type space wedge mechanism, should Mechanism together with power transmission friction mechanism F2, forms the force-closed spatial-wedging friction connection machine of the axial direction of electric control clutch C1 again Structure.

It should be noted that the meaning of the application " directly transmitting friction torque " refers to, transmission of the torque between two components Path is merely through a friction mechanism, and without any second other mechanism, with the friction mechanism possessed by friction The quantity of face/piece does not have any relationship.

It should also be noted that in view of have the characteristics of full circumferential surface contact friction, it can be most preferably in electric control clutch C1 Filling contributes to the brake fluid or coolant of heat dissipation, during especially as brake, to form wet friction environment.Meanwhile also Friction surface that can be in 70 grade components of friction member or inside with reference to known technology, most preferably set the example to communicate with each other accordingly Such as radial passage, in favor of lubricating and heat distributes.

Clearly as disk-shaped annular circumferential recess 78 be most preferably arranged to planar disc rather than cone plate-like, therefore, it is automatically controlled from Clutch C1 can not seek the concentricity essence between the combination of guide part 50 and intermediate piece 90 and limiter element 180 in theory Degree.It that is, can not be to rotation guiding mechanism G, traction friction mechanism F1 and the power transmission rubbing machine in frictional connection mechanism Between structure F2 three and the concentricity of three and axis X does excessive demand, when especially rotating speed is not high.As long as two face connects It is same each other to touch the secondary guide part 50 and intermediate piece 90 perpendicular to axis X and only with very little relative rotation of revolution friction Axis is set.And opposite modern crafts, ensure the concentricity between two annular components be only one it is simple and it is low into This labour.Therefore, this will significantly reduce making, assembling and the requirement using electric control clutch C1 and cost, and expand it and make Use field.

Illustrate the detailed relation and structure feature of Double-directional rotary guiding mechanism G in conjunction with Fig. 3 below.Wherein, most preferably With trapezoidal cross-section and the tooth-like opposed facing guide surface for being oriented to tooth 52 and 92 of each pair of face type spiral for radially extending 54 and 94, spiral tooth surface is complementarily configured to, after the two is circumferentially bonded to each other, can be formed corresponding to different circumference sides To two groups of faces contact spiral guiding friction pair.Preferably, be respectively facing different circumferencial directions two groups of guide surface 54a and Two complementary lift angle λ of 94a and 54b and 94b_aAnd λ_b, symmetrically it is equal to λ.Usually, 0 ＜ λ≤ξ, distinguishingly, ζ ＜ λ ≤ ξ or 0 ＜ λ≤ζ (as ζ ＞ 0).Obviously, if need to only transmit unidirectional torque, lift angle λ_aAnd λ_bIn one, can be most preferably Equal to being parallel to 90 degree of axis X.Preferably, all teeth for being oriented to tooth 52 and 92 are high, are each arranged to not interfere corresponding to not With circumferencial direction two groups of guide surface 54a and 94a and 54b and 94b in the axial direction while be bonded, that is, respective tooth top with Respectively the axial minimum spacing δ of residing tooth socket groove bottom is most preferably more than zero, to ensure that rotation guiding mechanism G's is circumferential free Degree/gap can be equal to zero.

To realize entering wedge and removing wedge for spatial-wedging friction bindiny mechanism, also especially setting in electric control clutch C1 at any time Have into wedge control mechanism, connected with closed contradict of axial force operably forced to establish or cancel frictional connection mechanism.Its In, enter wedge control mechanism include one rotation the stepless supporting mechanism SS of guide type, have as be supported part friction member 70, Support element 220 and limiter element 180, referring to Fig. 1~3.Support element 220 substantially annular in shape, with it is axial upper can simultaneously rigidly It contradicts and namely supports end face 189 to another inner face of friction member 70 and circumferential recess 78 and make the side of restricted rotational movement Formula is arranged between friction member 70 and limiter element 180.

In the present embodiment, stepless supporting mechanism SS is specially one and is intermediate piece with support element 220 and has limiting angle ξ ' Another space wedge mechanism, be provided with the rotation guiding mechanism UG of most preferably one-way type.Two groups of guiding mechanism UG The tooth-like mutual face for being oriented to tooth 62 and 232, being separately positioned on friction member 70 and support element 220 of one-way spiral with complementary structure To circular ring shape end face on so that the two rotation guide to contradict be connected.In fact, being oriented to tooth 62 and 232 can also set respectively It puts on support end face 224 and 189.Referring to Fig. 1,3, being oriented to tooth 62 and 232 most preferably has zigzag tooth form, and the two is provided with Lift angle is the complementary guide surface 64 and 234 of screw type of λ ', is most preferably parallel to the non-guide face 61 and 236, Yi Jichi of axis X Top surface 238.Wherein, the definition of 0 ＜ λ '≤ξ ', ξ ' is same as ξ.

In addition, the arm of force 222 extended along 82 outer radial of entrance is most preferably provided on the peripheral surface of support element 220.The power Arm 222 has circumferential appropriate intilted circumferential flank surface 228, can make two circumferential walls of the arm of force 222 and entrance 82 Running clearance is most preferably formed between 85, and ensures that support element 220 has enough circumferential free degrees with respect to limiter element 180 ε′.In this way, 180 rotatable support 220 of opposite limiter element, it can be within circumferential free degree ε ', with competing time Face on the basis of transition support end face 224 and 189, it is axial infinitely adjust friction member 70 be supported height/pushed away from distance.It should Adjusting can push friction member 70 by intermediate piece 90 and the seamlessly rigid compression/conflict of guide part 50 in power transmission rubbing surface 74, Or the rigidity compression/conflict state is cancelled, the axial force so as to forcibly establish or cancel frictional connection mechanism is closed Connection is contradicted, and space wedge mechanism is finally forced reliably to enter wedge or solution wedge in both circumferential directions.Wherein, guide part 50th, axial freedom/gap delta in circumferential recess 78 of intermediate piece 90, friction member 70 and support element 220 ', more than zero but be less than Axial movement distance ε ' × tg λ ' of the rotation guiding movement corresponding equal to above-mentioned circumferential free degree ε '.It optimally, can be in example As set helical compression spring between power transmission rubbing surface 74 and friction member 70, alternatively, being set in the respective radial holes of limiter element 180 Straight line wire spring is constantly contradicted by 90 one end of intermediate piece to the outer radial flange (not shown) or the arm of force of friction member 70 respectively 75, so that axial freedom/gap delta in discrete state ', it is always positioned between the rubbing surface of friction mechanism F1 or F2, so as to Reduce frictional resistance and abrasion.

Therefore, during use, as long as the axial force envelope of spatial-wedging friction bindiny mechanism can be established forcibly Enclosed contradicts connection, space wedge mechanism can be forced reliably to enter wedge/wedging immediately in both circumferential directions at any time, so as to Electric control clutch C1 is caused to engage.For example, cause 220 relative friction part 70 of support element arrow P directions along such as Fig. 1,3 Rotation, and complete above-mentioned axial force it is closed contradict connection when or later, as long as guide part 50 constantly have along Fig. 1,3 Arrow P direction relative frictions part 70 makees the trend of driving rotation, and friction member 70 is by leading by traction friction mechanism F1 Draw friction torque, draw the intermediate piece 90 of rotation guiding mechanism G, counter-guide 50 rotates along arrow R directions and leads To movement.Axial movement/tension force caused by the rotation guiding movement will be oriented to tooth 92 moment wedging in guide surface 54a In the end face wedge shape space surrounded with traction friction surface 72, that is, intermediate piece 90 by guide part 50 and 70 wedging of friction member into While one friction piece, traction friction mechanism F1 thus axial engagement, which is also limiting the swelling at once of guide part 50 On the corresponding inner face of power element 180 i.e. power transmission rubbing surface 74, in a manner of forming the closed conflict connection of axial force, cause Make power transmission friction mechanism F2 also synchronous engagements, and a friction piece will be directly connected on guide part 50 and 70 circumferential direction of friction member. Referring to Fig. 2 lower half portion.

Then, electric control clutch C1 is engaged with the wedging of space wedge mechanism.By in 60 endoporus of tubular matrix The incoming driving torque M of one axis 200₀, it is divided into and turns via the wedging friction of rotation guiding mechanism G and traction friction mechanism F1 transmission Square M₁And the power transmission friction torque M directly transmitted via power transmission friction mechanism F2₂, it is delivered separately to circumferential integrated friction member 70 and limiter element 180, then it is bent through the unshowned power transmission feature on the inside and outside circumferential surface of the latter or end face (such as facing flange ring) Face passes to coupled unshowned other components.Wherein, M₀=M₁+M₂.Obviously, above-mentioned axial tension force, wedging power/ The size of engaging force and each frictional force, is adaptively proportional to M completely₁, that is, driving torque M₀。

Far and away, due to the symmetry in circumferential direction, the arrow R direction relative frictions part 70 along Fig. 3 of guide part 50 is made Course of work during driving rotation, is quite analogous to, naturally herein without the necessity repeated.In addition, torque also can by with it is upper Opposite path is stated to transmit, and the course of work does not have any essential difference.

But should it is emphasized that as described above, electric control clutch C1 only in the setting with ζ ＜ λ≤ξ, can be with Obtain the antioverloading destruction function that adaptively opposite driving torque overload is skidded, but on condition that torque must from guide part 50 to 70/ limiter element 180 of friction member is transmitted, that is, along being transmitted as described above by the path direction of axis to wheel rather than opposite. Specifically, by the basic common sense of kinematics of the moment of momentum theorem/momentum theorem it is found that having the negative of very important rotary inertia The limiter element 180 for carrying or being coupled with the load, rotating speed can not possibly generate rank in the moment of electric control clutch C1 engagements Jump formula ascend to heaven or rapid drawdown.So when by between the loading component of frictional connection and first axle 200 there are during larger speed discrepancy, With ζ ＜ λ≤ξ setting electric control clutch C1 above-mentioned wedging type engaging process, necessarily one adaptively occur it is of short duration The transient process trackslipped of overload, until overload terminates, detrimental impact will not be generated, will not cause to stop prime mover or cause correlation The damage of component.Moreover, its Frictional Slipping torque/axial engagement power is adaptively equal to or always corresponding to driving torque M₀, Its wedge will not be caused dead.Obviously, the operating mode that the engagement characteristics which skids will be particularly conducive to clutch and braking.

And in engagement state, as long as the axial direction that can forcibly cancel spatial-wedging friction bindiny mechanism is force-closed Formula contradicts connection, space wedge mechanism can be forced reliably to remove wedge/solution wedge in both circumferential directions at any time, so as to cause electricity Control clutch C1 separation.For example, support element 220 is caused to overcome applied external force and acts on guide surface 234 and support end face 224 frictional resistance, the arrow R directions along such as Fig. 3 of relative friction part 70 make solution wedge rotation, that is, make to release stepless The rotation of the guiding role of supporting mechanism SS makes it lose axial supporting role, you can forces to cancel above-mentioned frictional connection at once The axial force of mechanism is closed to contradict connection.Normal pressure between guide surface 64 and 234 and its rotate guiding role, will be with The generation of two guide surfaces is mutually disengaged disappearing in a flash and simultaneously for contact trend.Naturally, the axial support force based on mechanism SS And the two friction mechanism F1 and F2 to work and entire space wedge mechanism, will detach or solve immediately wedge, and because of mechanism G, F1 and F2 can not axial fitting simultaneously, and space wedge mechanism is enabled to lose the possibility of wedging again in both circumferential directions.In It is that electric control clutch C1 terminates to engage and be transferred to again solution wedge-type discrete state/operating mode, and intermediate piece 90 starts to follow guide part 50 Relative friction part 70 and limiter element 180 dally together.Referring to Fig. 2 top halfs.

Above-mentioned technical proposal has been fully recorded in the two basic patent applications integrally combined above, and not It is that the application illustrates emphasis.What the application illustrated focuses on, and how to activate above-mentioned stepless supporting mechanism SS, that is, how Driving support member 220 is relative to limiter element 180 or is supported part rotation, forcibly to establish or cancel above-mentioned frictional connection machine The above-mentioned axial force of structure is closed to contradict connection.For this purpose, entering wedge control mechanism further includes actuating mechanism an AC, Yi Jizhi A few electrical actuator EM.

Referring to Fig. 1~2, actuating mechanism AC is most preferably a cylindrical cam mechanism, including being axially disposed at annulus At least one screw-type benchmark protrusion 122 on shape disc-like end portions 188a outer end faces, is disposed radially on 222 peripheral surface of the arm of force Guide protrusions 132 and be arranged on can trackslipping on 180 peripheral surface of limiter element and actuate ring 120.Correspondingly, along dish type What is radially extended in the 188a of end actuates the internal side diameter of the radial flange 129 of ring 120, is provided with circumferential free degree most preferably etc. In the zero slidably receivable benchmark protrusion 122 of mode corresponding datum hole 124 and, being provided in inner circumferential surface can slide The guide groove 134 with certain helix angle of guide protrusions 132 is stored dynamicly.Guide groove 134 is a radial through-hole formula Conduit can also be the inner peripheral surface conduit for extending to end certainly.

To make actuating mechanism AC, more precisely can automatically be restored to non-actuation state to cause to actuate ring 120 When operating position, that is, non-actuation station, actuate ring 120 should have sustainably elasticity contradict to the energy of limiter element 180 Power.For this purpose, resetting spring 150 is also arranged on the peripheral surface of benchmark protrusion 122.One end of the spring 150 is contradicted to benchmark The outer end face in hole 124, the other end are then contradicted to the radial flange of raised 122 tail ends of benchmark, and ring is actuated to be set to indirectly Axially movable distance/the axial freedom for actuating ring 120 is defined to be not less than by the mode between 120 and limiter element 180 L.Obviously, it is uniformly force, benchmark protrusion 122 and resetting spring 150 should be most preferably more than one, for example, circumferential be evenly distributed with three More than.

It should be in passing, it is noted that above-mentioned setting and not exclusive or best.For example, benchmark protrusion 122 can radially be set On such as peripheral surface of disc-like end portions 188a, datum hole 124 is correspondingly disposed in the tubular segments for actuating ring 120, it will be multiple Position spring 150, which is arranged on, to be actuated between 180 inner and outer circumferential surfaces of ring 120 and limiter element.For this purpose, the peripheral surface of limiter element 180 is most Goodly stepped, ladder end face most preferably flushes in the end face in the same direction of the arm of force 75, and the two is with towards disc-like end portions 188b's Mode, while contradict to resetting spring 150.The outer end of resetting spring 150, that is, axial left end then contradict to being arranged on and actuate The inner face of the interior radial flange of 120 outer end of ring.And the flange, and be arranged in disc-like end portions 188b peripheral surface circumferential slots Snap ring positions.Accordingly, positioned at the interior radial flange 129 for actuating 120 other end of ring, outer radial extension should be most preferably modified to Flange.

It should be noted also that for support element 220 is made to obtain the ability that elasticity enters wedge, guide protrusions 132 can be also arranged to Elastic bumps.For example, be made with spring steel wire, alternatively, the side clockwise of the guide protrusions 132 in such as left view 1, also That is the arrow R meanings side in Fig. 3, then the spring steel wire of a radial direction is set with gap, form one again with guide protrusions 132 Close protrusion.In this way, support element 220 is just provided with the ability that elasticity enters wedge and rigidity removes wedge.

In setting, actuating mechanism AC has the effect that.That is, actuate the non-actuation of the normality that ring 120 is in axial direction During station, such as the opposing left position in Fig. 2, even if guide protrusions 132 are contradicted to the circumferential wall of guide groove 134, support The relative rotation of part 220 will not cause stepless supporting mechanism SS to set up, and above-mentioned axial force is closed to contradict connection.It is and axial It is mobile to actuate ring 120, such as move an axial distance L from left to right in Fig. 1~2, pass through the mobile guide of guide groove 134 Effect, can cause guide protrusions 132 to be rotated relative to limiter element 180, such as along the arrow P directions in Fig. 1,3, so as to band Dynamic 220 relative friction part 70 of support element makees guide type rotation in the same direction, and in the circumferential direction of the circumferential conflict of support element 220 to entrance 82 And, guide protrusions 132 are contradicted to before the axial wall surface of guide groove 134 before side wall surface 85, push friction member 70 by intermediary Part 90 and guide part 50 are rigidly contradicted to power transmission rubbing surface 74, forcibly to set up the closed company of conflict of axial force It connects, as shown in the lower half of Fig. 2.And axial move backward actuates ring 120, that is, by Fig. 2 right ends actuate station movement away from From the non-actuation station that L returns to left end, then perform completely in contrast to upper action, force to cancel the above-mentioned closed conflict of axial force Connection, and the sum of axially free gap between above-mentioned component can be made, it is again close to or equal to axial freedom δ ', such as Fig. 2 Shown in the first half.Naturally, resetting spring 150 acts on the elastic force for actuating ring 120, it is necessary to remove stepless supporting mechanism more than pressure Axial driving force needed for the above-mentioned stepless support of SS.

With continued reference to Fig. 2, for activating the electrical actuator EM (not shown in figure 1)s of actuating mechanism AC, including being arranged on The cyclic annular armature part 128 of 129 outer end face of radial flange in ring 120 is actuated, is axially prolonged by 128 radially inner and outer both sides of armature part The magnetic conduction flanged ring 126a and 126b stretched and the ring-type sky surrounded with gap positioned at magnetic conduction flanged ring 126a and 126b Between in the cyclic annular yoke 230 for being built-in with electromagnetic coil 232.Yoke 230 and its power cord are fixedly attached to unshowned rack On, the axial spacing between armature part 128, more than or equal to above-mentioned displacement distance L, electromagnetism the suction-combining force, which is more than, resets bullet Spring 150 acts on the elastic force for actuating ring 120, and the axial movement of its guide type can be completed to ensure to actuate ring 120.

Then, it during use, as long as transmitting corresponding electric signal to electric control clutch C1, can complete that it is enabled to connect at any time The simple manipulation closed or detached.As long as that is, being powered to electrical actuator EM, actuating mechanism AC can be activated as described above, enabled Guarantor, which actuates ring 120 and moves to, actuates station, stepless supporting mechanism SS to be caused to set up required stepless support, so as to forcibly Closed contradict of above-mentioned axial force is set up to connect, and electric control clutch C1 is finally caused to engage.As long as and cut off supply extremely The electric energy of electrical actuator EM can enable guarantor actuate ring 120 and return to non-actuation station as described above by actuating mechanism AC, It is closed so as to forcibly cancel above-mentioned axial force stepless supporting mechanism SS moments to be caused to remove its rigid stepless support Connection is contradicted, and electric control clutch C1 is finally forced to detach.

Obviously, use/method of operating of electric control clutch C1 is entirely identical to the prior art.

And in order to ensure intermediate piece 90 in both circumferential directions reliably enter wedge, it is ensured that parameter ε ' and δ ' immobilize, And, it is ensured that enter the reliability and consistency of wedge action, enter wedge control mechanism and also most preferably include rotation guiding mechanism G's Circumferential free degree ε is limited in the circumferential position-limit mechanism in section [0,2 δ '/tg λ].The circumferential direction position-limit mechanism is most preferably one and sets The axial/radial cotter way formula embeding mechanism between guide part 50 and intermediate piece 90 is put, is limited including at least the centering type of one On the such as guiding tooth crest top land that position protrusion 68 is disposed therein, such as on the crest top land of guiding tooth 52 illustrated in Fig. 1~3. And to axially slidably it is permanent accommodate the protrusion 68 centering type limiting groove 118, then be correspondingly disposed in it is opposite for example It is oriented in such as bottom land of tooth 92.Most preferably, limit protrusion 68 should at least have both circumferential elasticity, and be arranged on and be oriented to tooth 52 Radially inner most, for example, being served as by an Embedded spring steel wire.At this point, the circumferential free degree ε of circumferential position-limit mechanism, Zero can be most preferably approximately equal to.

Certainly, constantly bullet draws/presses to guide ring 50 to make in 90 axial direction of intermediary's ring, most preferably has both the limit convex of elasticity 68 and groove 118 are played, can be also disposed radially in the opposed facing inner and outer circumferential surfaces of guide part 50 and intermediate piece 90, including pipe On the peripheral surface of shape matrix 60, alternatively, being arranged on indirectly and the non-rotatable other structures being connected of guide part 50 and intermediate piece 90 On part.For example, being arranged on the inner peripheral surface of limiter element 180 and the peripheral surface of intermediate piece 90, and there can be such as feather key/pin The form of connection, referring to Fig. 7.The related description two basic patent applications as detailed above integrally combined.In addition, above-mentioned axial direction Bullet draws/presses function can also be provided by an independent elastic element, for example, being set in the outer of intermediate piece 90 and guide part 50 simultaneously On circumferential surface and two ends are respectively embedded into the spiral tension spring in corresponding radial direction counterbore on two peripheral surfaces.

In setting, circumferential position-limit mechanism has the effect that.That is, in discrete state, intermediate piece 90 and guide part 50 It is axial to contradict, most preferably carried out in a manner that guide surface 54a and 94a and 54b and 94b is contacted simultaneously.In this way, it is in office where Upward wedging type engagement, electric control clutch C1 will not generate circumferential idle stroke and corresponding friction impact.Also, it goes The separation process of wedge-type will be simple and direct and rapid, has significant step evolution.Even if lift angle λ values in the angle range of climbing of 0~ζ, The circumferential barrier effect of limit protrusion 68 also can enable the process complete in stepwise fashion, without being completed with gradual manner.

In addition, to adapt to high-speed rotation, it can also be most preferably in the residue not being filled for actuating 120 internal diameter side entrance 82 of ring In space, at least one such as arc balancing component/counterweight for example most preferably with the remaining space with complementary structure of setting Block.The balancing component is most preferably radially oriented, for example, by through in its axial hole, and it is fixedly attached to limiter element At least one of 180 axial hole 81 fixed pin, referring to Fig. 2.

It is required it is emphasized that on the one hand, by working mechanism and common sense it is found that cause electric control clutch C1 engage and point From motivator or actuating power, that is, act on the axial driving force for actuating ring 120 or guide groove 134 act on be oriented to it is convex 132 actuating torque is played, is big for comparing for engagement for separation.On the other hand, with reference to the foregoing, stepless support machine The guiding lift angle λ ' of structure SS is set to closer to limiting angle ξ ', and the solution wedge that support element 220 makees needed for separation solution wedge rotation turns Square just closer to zero, forces solution wedge also easier.Theoretically, which (supports as λ ' is equal to ξ ' equal to zero The critical state in the normal force being applied on guide surface 234 circumferential " extrusion " of part 220).Naturally, corresponding to the solution wedge torque Driving actuate the axial force of ring 120 or guide groove 134 acts on the actuating torque of guide protrusions 132, also can therefore close to Or equal to zero.

Consequently, to facilitate implement accurate sensitive control and energy saving, the guiding lift angle of stepless supporting mechanism SS in the present invention λ ' should most preferably be close or equal to ξ '.In this way, the rigidity of necessary resetting spring 150 and the electromagnetic force of electrical actuator EM It can significantly reduce.Certainly, λ ' can also be more than ξ ' in a limited degree, and cost is the increase of electromagnetism the suction-combining force.And if λ ' is significantly small In ξ ', it will the increase of 150 rigidity of resetting spring needed for causing and the increase of required electromagnetism the suction-combining force.

Those skilled in the art are so far it is not difficult to find that electric control clutch compared with the prior art, according to the present invention automatically controlled Clutch C1 has many advantageous effects.

First, the electromagnetic force of electrical actuator EM is only that its engagement performs signal with the action detached, is transmitted with it Torque or power wide of the mark.Meanwhile with the space wedge mechanism of electromagnetic force wide of the mark, more because its be used for passing power All friction mechanisms of torque have been comprehensive engagement class, and are provided with the unrivaled transmission capacity corresponding to the limiting range of stress And impact resistance.Meanwhile radial and axial size is also correspondingly greatly lowered.

Secondly as its engaging force is unrelated with the electromagnetic force of electrical actuator EM, thus, power consumption is greatly lowered (follow-up It is lower in embodiment), naturally, corresponding transmission efficiency and calorific value are also greatly lowered.

Again, since the core of electric control clutch C1 is a space wedge mechanism, engagement and separation, that is, the machine Structure enters wedge and removes wedge, all natively has the characteristics that trigger-type is rapidly completed.And stepless supporting mechanism SS and activate its electroluminescent Motivation structure EM etc. is only determined whether into wedge and the auxiliary body for removing wedge, and without times for changing into wedge and going wedge mechanism What may and function.Therefore, electric control clutch C1 has the characteristics of action response is sensitive quick, and engagement is rapid reliable, and fits The application site for being quickly engaged and detaching for frequent movement or requirement.

Finally, for the plan of establishment with 0 ＜ λ≤ζ of parameter (for ζ ＞ 0), electric control clutch C1 more because Characteristic with absolute zero slip, the versatility advantage with alternative slipping toothed electromagnetic clutch of the prior art it Border more maintains the intrinsic advantages of stepless engagement.

For example, the internal diameter in guide part 50 is not less than 50mm, the outer diameter of limiter element 180 is axial wide between 98~175mm Degree between 60~100mm and service factor and friction coefficient be respectively 2.0 and 0.1 when, only about half cycle can be with wedging and biography The electric control clutch C1 of power, wedged friction nominal torque can be up to 2, and the magnitude of 790~16,900Nm is horizontal.Even if because The process structures such as radiating groove are set and are decreased, transmission capacity will be significantly larger than the prior art, particularly torque and pass Density/the capacity passed.

It should be noted that seek the design freedom of bigger and space wedge mechanism being made to be easier wedging or solution wedge, The present invention also has the various technological means for promoting limiting angle ζ and ξ numerical value.Including by 54 He of guide surface of rotation guiding mechanism G 94 are arranged to the tilted spiral type flank of tooth, the rubbing surface 72 and 104 of traction friction mechanism F1 are arranged to frusto-conical surface, to cause axis The cone-apex angle of the angle of guide surface 54 and 94 or rubbing surface 72 and 104 and axis X in section/half is no longer equal to 90 degree, and is equal to 0 Other values between~180 degree；Traction friction mechanism F1 is arranged to multi-disc friction mechanism；And it will be provided with bigger The material or element of friction coefficient are attached at least one of rubbing surface 72 and 104.Here should incidentally, this theory Bright book has been presented for the clearly literal definition and explanation about limiting angle ζ and ξ, without paying any performing creative labour, Those of ordinary skill in the art can derive its functional relation/calculation formula accordingly.

Those skilled in the art based on common sense it is found that during for increase equivalent diameter electric control clutch C1 torque capacity/biography Kinetic force simultaneously reduces axial tension force, and traction friction mechanism F1 and power transmission friction mechanism F2 also can be according to known technologies, by as above institute It is separately or concurrently set as multi-disc friction mechanism with stating, and therefore rubs with one group of traction more than one in quantity Wipe secondary or power transmission friction pair.

It is readily apparent that, if between the power transmission rubbing surface 58 and 74 in Fig. 1 or Fig. 2, then axially and symmetrically set one Intermediate piece 90, and respectively symmetrically form another rotation guiding mechanism and traction with guide part 50 and combined pouch-shaped friction member Friction mechanism, then, electric control clutch C1 will no longer have that power transmission friction mechanism F2, but tool is same there are two sharing simultaneously The traction friction mechanism F1 of combined pouch-shaped friction member.If exchange the axial position of guide part 50 and intermediate piece 90, rubbing machine Structure F1 and F2 just also will be exchanged axially, and the power transmission friction mechanism after modification will be distinguished directly and rigidly with guide part and friction member It is combined together.If exchanging rotation guiding mechanism G and traction friction mechanism F1 both sides, that is, exchange be oriented to tooth in couples 52nd, 92 with the axial position of rubbing surface 72,104, electric control clutch C1 can have overload by taking turns on the transmission path of axis The defencive function of skidding, referring to Fig. 7.At this point, friction member 70 and guide part 50 in Fig. 1~2, have actually exchanged role.And If friction member 70 and intermediate piece 90 are merged into a part, and it is placed in an endoporus between power transmission rubbing surface 58 and 74 The drag ring of different transmission shafts is coupled with, friction member 70 will be modified to intermediate piece.That is, in latter two modification, it is supported part and has divided It is not served as by guide part and intermediate piece.

In addition, as described in definition, the present invention does not make specific limit to rotation guiding mechanism G and its guiding tooth 52,92 System, is not necessarily to have best spiral toothing, is also not necessarily to the complementary guiding flank of tooth.Therefore, guiding mechanism G and It, which is oriented to tooth and is oriented to the flank of tooth, can have the form and shape for arbitrarily having rotation guide function.Being oriented to tooth can be set by discrete form It puts on end face/circumferential surface, it also can be circumferential to be arranged on corresponding inner/outer circumference with continuing by such as single head or multiple-threaded mode On face.And in latter arrangement form, it can most preferably be arranged to that there is rectangle, trapezoidal, zigzag or triangle etc. The helical tooth of cross sectional shape.As a same reason, as long as axial complementary fitting conflict can be best accomplished, rubbing machine is drawn The tapering shape rotary type rubbing surface of respective two groups of revolutions friction pair of structure F1 and power transmission friction mechanism F2, can be based on arbitrary song Line/busbar is turned round around axis X, and can be provided with radiating or excluding the discontinuous table of the groove of liquid/gas Face.

Therefore, electric control clutch C1 can also have such modification.That is, the spiral by rotation guiding mechanism G therein Tooth-like guiding tooth 52 and 92 is arranged on the peripheral surface of tubular matrix 60 and the inner peripheral surface of intermediate piece 90, alternatively, in being arranged on The peripheral surface of Jie's part 90 and be formed in 50 radially outer ring side of guide part annular end face flange inner peripheral surface on (be equivalent to radially Overturn the position of intermediate piece 90 and guide part 50).Alternatively, removal guide part 50, by such as hot investment casting, casting, die casting Or the techniques such as injection, tooth 52 will be oriented to and be directly and rigidly formed in power transmission rubbing surface 74, so that limiter element 180 is modified to have There is the pouch-shaped guide part of axial force-closed function.Correspondingly, should be between the intermediate piece 90 shown in Fig. 1,2 and friction member 70, diameter The dish type drag ring of first axle 200 is coupled to one endoporus of merging, electric control clutch C1 can be modified to guide part as pouch-shaped The axle-wheel driven type electric control clutch of component.And if being fixedly attached to the endoporus of intermediate piece 90 with another axis again, guide part Role just will be exchanged with intermediate piece 90 and be modified to pouch-shaped intermediate piece, above-mentioned modification more will further be modified to intermediate piece as pouch-shaped The axis of component-axis driven type electric control clutch.

Further, the circumferential position-limit mechanism in the modification that above-mentioned guide part is pocket member is removed, removal is original The arm of force 222 with guide protrusions 132 is transplanted on the peripheral surface of intermediate piece 90, with actuating by friction member 70 and support element 220 Ring 120 forms regulating mechanism, and sets λ ≈ ξ as described above, can obtain the simple structure modification with four components.Control The axial movement for actuating ring 120 of the simple structure modification can enable intermediate piece 90 solve wedge or enter wedge on single circumferencial direction. Accordingly, the simple structure modification in engagement state only can transmit torque on the circumferencial direction corresponding to its wedging, can not On the contrary, unless reverse movement actuates ring 120 to commutating into wedge.Therefore, which no longer has electric control clutch C1 Through a wedging, it adaptively can at any time commutate on arbitrary circumferencial direction and transmit the feature performance benefit of torque.Undoubtedly, in above-mentioned Jie's part also can further have for the modification of pocket member is similar to this four component simple structure modifications.

The diagram and explanation and electric control clutch of more multiple changing type in relation to axial force enclosed construction and ring-type pocket member How to have the diagram and explanation of flexible engagement ability, reference can be made to asked in two basic patents integrally combining above and The technology that the applicant is announced in the Chinese patent literature CN102537126A and CN102758861A being hereby incorporated by full Scheme, the application will not be discussed further herein.

In the present invention, actuating mechanism AC and electrical actuator EM are not limited to a kind of pattern and setting shown in the present embodiment Position.On the contrary, it can have any required pattern and installation position, referring to follow-up explanation, as long as its directly or It is connected to two guiding teeth 52 and 92 or 62 and 232 of rotation guiding mechanism G or UG simultaneously indirectly, it can be in response to telecommunications Number and cause intermediate piece 90 enter wedge reconciliation wedge, that is, cause electric control clutch such as C1 engage and separation.For example, except this Except the scheme that application embodiment is announced, can also have electro-hydraulic actuation scheme.As long as this with reference to it is above integrally combine it is special Technology in sharp document WO2012/089131A1 is guided, and the stepless supporting mechanism of fluid therein will be actuated and to correlation Control valve activates, and electrical actuator is transferred to complete.

Moreover, as described in subsequent embodiment, the electrical actuator EM in embodiment one is also not necessarily to the actuation that is constantly powered. For example, in limiter element 180 and between actuating the inner and outer circumferential surfaces of ring 120, the spring groove formula of a such as spring steel ball is set Detent mechanism, can will actuate ring 120 be resiliently positioned in its actuate or non-actuation station on.Then, electrical actuator EM The adhesive action of a pulsed is needed, the actuation motion that electric control clutch C1 is caused to engage can be completed.And actuating is detached, it can lead to It crosses another electrical actuator being set up in parallel to complete with same pulsed adhesive action, which is contradicted by an outer end , can be the same similar to the electromagnetic switch in automobile starter to the lever mechanism for actuating ring 120, movement will be attracted and become pairs of the latter Axial direction push away movement.

As previously mentioned, the explanation in view of the application focuses on how activating stepless supporting mechanism SS, therefore, Xia Shushi Applying example will illustrate mainly for the typical forms of actuating mechanism AC and electrical actuator EM.The various changes of other mechanisms Type and explanation, reference can be made to the two basic patent applications integrally combined above.

Embodiment two：Axial actuation space-like wedging type electric control clutch C2

Referring to Fig. 4, with respect to electric control clutch C1, the main variant of electric control clutch C2 is, actuating mechanism AC includes one A bias rail groove mechanism and a guiding ratchet mechanism GR.

The planet axis 42 of the bias rail groove mechanism, be rotatably arranged in disc-like end portions 188a inner faces corresponds to entrance In axial hole at 82.In at least wire-like retaining spring 45 be inserted by the radial hole of disc-like end portions 188a peripheral surfaces Portion is constantly submerged in the corresponding circumferential slot of 42 peripheral surface of planet axis, while axial restraint lives planet axis 42, also with fitting The mode of one of be mutually parallel two cutting planes 49 to the circumferential direction groove bottom, gives elasticity by 42 circumferential position of planet axis It is fixed.The planetary gear 40 of 42 inner end of planet axis is arranged on, is rotationally accommodated in the semicircle shape notch of above-mentioned axial hole inner end In 183, and pass through the gear teeth of its peripheral surface, be constantly engaged to the gear teeth 123 for being arranged on and actuating the correspondence inner peripheral surface of ring 120.If The eccentric spindle nose 44 in 40 inner face of planetary gear is put, is most preferably a spring steel wire.Eccentric spindle nose 44 is slideably axial It extends in the guide groove 240 radially extended on the arm of force 222.For ease of assembling, which most preferably radially extends To the peripheral surface of the arm of force 222, and form outer radial notch.Then, rotation actuates ring 120, and planetary gear 40 can be driven in the same direction Rotation, and then the conflict of 240 circumferential wall of guide groove is acted on by eccentric spindle nose 44, driving support member 220 relatively rotates.Cause And by the setting of common-sense, the suitching type being located between two circumferential extreme positions of eccentric spindle nose 44 can be moved, conversion For support element 220 cause electric control clutch C2 enter engagement and detach operating mode between the week actuated between non-actuation station To swing.During assembling, can first planetary gear 40 in place and retaining spring 45, and after support element 220 is installed, then by eccentric shaft In first 44 setting to the end face of planetary gear 40.

The rotation of ring 120 is actuated to be adapted to, rotatable axial restraint is modified to the connection mode of armature part. That is, armature ring 130 can be rotatably set on the cascaded surface for actuating 120 inner peripheral surface outer end of ring, and it is arranged on the latter outer end 184 axial restraint of snap ring in circumferential slot is lived.Certainly, to reduce rotary resistance, washer can be also set in 184 inner end of snap ring, and Several balls are set between the washer and armature ring 130.

For driving the unidirectional guiding ratchet mechanism GR for actuating the rotation of ring 120, pin shape pawl 264 and preloading spring 266, it is arranged in the radial hole of disc-like end portions 188b peripheral surfaces, and radially contradict to being set to and actuate 120 outer end of ring The one-way type of inner peripheral surface is oriented to ratchet 136.The field of conjugate action towards electrical actuator EM of ratchet 136 is oriented to, has and is not parallel to The lift angle of axis X, such as 60 degree.In this way, when actuating the displacement distance L from left to right of ring 120, pin-shaped pawl 264 is with being oriented to spine The engagement of tooth 136 will generate mobile guide effect, and driving actuates ring 120 and rotated relative to limiter element 180.And actuate ring 120 movement of recovery from right to left, pin-shaped pawl 264 will be in the form of the radial direction of compressed spring 266 avoid, from guiding ratchet 136 rear flank slips over, and is acted on without mobile guide.

In setting, actuating mechanism AC has the effect that.That is, actuate ring 120 by left extreme non-actuation station to the right Often movement is primary, that is, displacement distance L primary for the extreme station that actuates, and pin-shaped pawl 264 is with being oriented to 136 field of conjugate action of ratchet Driving planetary gear 40 is just rotated half cycle/180 degree, and just by retaining spring 45 by guiding role relative to limiter element 180 Circumferential position is lived in flexible fastening, and synchronously, eccentric spindle nose 44 will just turn to one of two circumferential extreme position, and by bullet 45 flexible fastening of spring is lived.

Therefore, as long as electrical actuator EM completes pulsatile once formula adhesive action, so that it may actuating mechanism AC be caused to complete one It is secondary that the reciprocating of stepless supporting mechanism SS is actuated/activated, and in an alternating manner, forcibly establish or cancel spatial-wedging The axial force of frictional connection mechanism is closed to contradict connection, so as to which electric control clutch C1 be caused to engage or detached.Moreover, it completes to promote After dynamic, actuating mechanism AC can automatically keep it and actuate effect, and its actuate ring 120 can automatically axially return, not Electrical actuator EM is needed to provide any maintenance energy or energy.

Unquestionably, trigger energy is only needed to the manipulation of electric control clutch C2, without any maintenance friction torque/positive pressure The energy constant of power.That is, only consume a time extremely of short duration pulsed electricity when changing operating mode, thus its power consumption is into height It is less than electric control clutch C1 to multiple, compared with the prior art, is even more equivalently employed without power consumption and fever.

Embodiment three：Axial actuation space-like wedging type electric control clutch C3

Referring to Fig. 5~6, with respect to electric control clutch C2, electric control clutch C3 has been carried out simply only for actuating mechanism AC Modification.

First, actuating mechanism AC includes a cylindrical cam mechanism for being functionally equivalent to the eccentric rail groove mechanism.The machine Structure AC includes the planet axis 42 that axial stage casing is provided with stepped cam section 46, inside radially stores the stepped of the planet axis 42 Tangential recesses 170.Wherein, tangential recesses 170 in a manner of tangentially extending, be arranged on disc-like end portions 188a correspond to entrance On 82 peripheral surface.Cylindrical cam groove 48 is arranged on the peripheral surface of cam segment 46, and rotary type guiding movement can cause permanent Ground is accommodated in rod-shaped driven member 110 therein and axially makees reciprocating guide swinging along cam.Most preferably, the driven member 110 is by straight Wire spring silk is made, and across the axial gap 178 for axially extending to disc-like end portions 188a peripheral surfaces of tangential recesses 170, Gu Surely it is connected in the corresponding axial hole of the arm of force 222.To the wire-like retaining spring 45 of flexibly positioned 42 circumferential position of planet axis, It is inserted into corresponding axial hole by the outer end face of disc-like end portions 188a.

Secondly, actuating mechanism AC further includes a planetary end ratchet mechanism.It has, and empty set is in planet axis 42 Planetary gear 40 actuates the annulus spline-simulating gear teeth 123 of 120 inner peripheral surface of ring with being arranged on of persistently engaging of planetary gear, with mutual Benefit mode is separately positioned on the face type single direction ratchet 43 and 41 on 40 both sides' opposing end surface of cam segment 46 and planetary gear, with And planetary gear 40 is constantly suppressed into the preloading spring 266 to cam segment 46.Wherein, tangential recesses 170 include, rotatably The meander sections 172 of planet axis 42 are stored on ground, store the cam segment 174 and planet of cam segment 46 and planetary gear 40 with gap respectively Section 176.Preloading spring 266 passes through most cam segment 46 at last of planetary gear 40 i.e. using the end wall surface of cam segment 174a as supporting surface It suppresses in the end wall surface of cam segment 174b.

In setting, actuating mechanism AC has the effect that.That is, ring 120 is actuated by left extreme position extreme position to the right It is often mobile primary, that is, mobile actuating distance, planetary gear 40 can be driven just to rotate one relative to limiter element 180 2 β/mono- in week, and the unidirectional drive of cam segment 46 is acted on by the end ratchet mechanism, cause it just by driven member 110, by a circumferential extreme position, are displaced to another extreme position.Meanwhile also cause planet axis 42 just by positioning bullet Circumferential position is lived in 45 flexible fastening of spring.Wherein, β is the number of rise possessed by cylindrical cam mechanism or cam path 48.It is corresponding The number of the ratchet number of ground, cutting planes 49 and single direction ratchet 43 and 41, it should be at least one times of 2 β, and should be most preferably all To uniformly.

When assembling electric control clutch C3, first planetary gear 40 should be preset on a specific position, the specific position pair Ying Yu actuates critical station when ring 120 is engaged with the releasing of planetary gear 40 under normal circumstances, in this way, can ensure to actuate ring After 120 axially enter position, driven member 110 is just caused to be on a pole location of cylindrical cam groove 48.And then assembling rank 184 grade components of iron hoop 130 and snap ring.

Obviously, electric control clutch C3, which has, is substantially identical to the pulsed activation manners of electric control clutch C2, the course of work and Advantageous effect.Moreover, because reciprocal time of the driven member 110 in response to the rotation one week of cam segment 46 can be previously set, electric control clutch Device C3, which has more, actuates the advantages of ring 120 is moved axially apart from adjustable or design freedom bigger.Moreover, actuate the upper of ring 120 Actuating distance is stated, can be significantly less than aforementioned actuating distance L, therefore, electric control clutch C3, which has, further reduces axial dimension.

It is readily apparent that, also in planet axis 42 and the sky of meander sections 172 not being filled between 120 inner peripheral surface of ring can be actuated Between in, in complementary fashion respectively setting one filling member, most preferably it is radially defined live planet axis 42.

Example IV：Circumferentially actuate space-like wedging type electric control clutch C4

Different from previous embodiment referring to Fig. 7~11, electric control clutch C4 is one and directly circumferentially rubs by pulsed Power activates the embodiment of stepless supporting mechanism SS.

Wherein, rotation guiding mechanism G and the relative axial position of traction friction mechanism F1 both sides are exactly the opposite in aforementioned reality Apply example.That is, having exchanged the axial position for being oriented to tooth 52,92 and rubbing surface 72,104 in couples, the arm of force 75 is modified to the arm of force 55.And The tubular matrix 76 of 70 internal side diameter of friction member, is axially stretched out by inner peripheral surface 84b, and by needle bearing 206a and 206b, difference It is rotatably supported on the peripheral surface of stair-stepping first axle 200 and the inner peripheral surface 84b of limiter element 180.Tubular matrix On on 76 peripheral surface or end face, it is provided with the power transmission characteristic surface such as dental inlay tooth, the gear teeth, spline or keyway.In addition, most The limit protrusion 68 for having both elasticity goodly is arranged on indirectly on the inner peripheral surface of limiter element 180, and limiting groove 118 is then accordingly It is arranged on the peripheral surface of intermediate piece 90, and in axially extending shape.First axle 200 is non-rotatably connected to limit by spline pair The inner peripheral surface 84a of power element 180, the latter to be driven actively to rotate, and make electric control clutch C4 in torque by first axle 200 to rubbing On the transmission path for wiping part 70, has the defencive function that overload is skidded.

It should be in passing, it is noted that the axial length of friction member 70, it is impossible to more than the axial width of entrance 82, and during assembling, It first should radially enter a friction member 70, then radially enter other components such as guide part 50.

Similar with electric control clutch C2, the actuating mechanism AC in the present embodiment is also to include eccentric rail groove mechanism and planet The composite structure of gear mechanism.Referring to Fig. 7,11, eccentric rail groove mechanism includes, and is at least substantially radially arranged on the arm of force 222 On through-hole type guide groove 240, including planet axis 42 and the 44 two-part eccentric shaft of eccentric spindle nose for being formed in its head.Wherein, Planet axis 42 is rotatably arranged in the corresponding axially extending bore of circular disc-like end portions 188a, inner face and the arm of force 222 Most preferably gap is separated by, and rigid eccentric spindle nose 44 is then unvaryingly axially penetrated through in guide groove 240, and with the two of guide groove 240 The circumferential free degree most preferably more than zero is maintained between a circumferential direction type wall surface 242 and 244.The planetary gear mechanism includes, It is at least non-rotatably set to 42 outer end of planet axis and contradicts to the ladder shaft-like planet tooth of the outer end face of disc-like end portions 188a Wheel 40 and, the relay ring gear 30 discontinuously engaged with it.

In order to the simple actuating movement with fixed displacement come adaptively obtain intermediate piece 90 enter it is stepless needed for wedge Displacement-type target moves, also that is, 222 elasticity of the arm of force is caused, which to enter wedge and rigidity, removes wedge, so that it is guaranteed that electric control clutch C4 is engaged/entered The permanent reliability of wedge, actuating mechanism AC are also most preferably provided with spiral tension spring formula adjustment spring 152.The one of adjustment spring 152 End is connected to the end portion of the stretching guide groove 240 of eccentric spindle nose 44, and the other end is connected to the axis for being arranged on 222 inner face of the arm of force In protrusion 156, opposed facing guide surface 64 and 234 is continued into bullet towards the direction being mutually adjacent to and is drawn, such as the P in Figure 11 Direction.

Referring to Fig. 7,11, in setting, each structural element of actuating mechanism AC has the effect that.That is, during left view 11, During the extreme position E1 for being located at 244 side of wall surface when eccentric spindle nose 44 is deasil circumferential, even if support element 220 widdershins turns It moves to wall surface 244 and rigidly contradicts eccentric spindle nose 44, electric control clutch C4 can not be caused to engage, can not cause to adjust bullet Spring 152 is contracted to recovery.And when eccentric spindle nose 44 is clockwise from going in circumferential direction positioned at 242 side of wall surface, and by guide groove 240 During the extreme position E2 that interior radial direction wall surface rigidly stops, most preferably gap is separated by eccentric spindle nose 44 with wall surface 242 and 244, but Adjustment spring 152 draws the circumferential bullet of support element 220, activates stepless supporting mechanism SS as already described above and enables electric control clutch Device C4 enters engagement/wedging state.

It must be noted that eccentric spindle nose 44 is rigidly stopped by the interior radial direction wall surface of guide groove 240 without may continue to upwards During rotation, the elastic force direction of adjustment spring 152, have been directed to planet axis 42 with the different side of axis X.Therefore, eccentric spindle nose 44 only by adjustment spring 152 elastic force, can be stably maintained on the E2 of position, also that is, persistently causing electric control clutch C4 On the self-locking position of engagement.

It should be noted that for convenience of showing, the guide groove 240 in Figure 11 is cut into openning shape.

Obviously, adjustment spring 152 can be provided in such as sheet like flexible element on wall surface 242, can be circumferential connect It is connected on tension spring between the arm of force 222 and two opposing end surfaces of the arm of force 55 etc..Certainly, adjustment spring 152, example can also be cancelled Such as, eccentric spindle nose 44 is served as by spring steel wire, it is made to have both circumferential elasticity.

Referring again to Fig. 7~8, actuating mechanism AC further includes the relay ring gear 30 for planetary gear 40 to be driven to rotate.It should Ring gear 30 is removably secured in the tubular flange 187 of disc-like end portions 188a outer end faces, by positioned at its outer end face week in axial direction Snap ring 184a into slot is limited.Relay ring gear 30 include the outer shroud 36 formed around axis X and inner ring 38 and, by this two Ring is rigidly combined into the circumferentially uniformly distributed even number disc 31 of a part, such as 8 by outer end face.It is spaced by disc 31 On 38 peripheral surface of 36 inner peripheral surface of outer shroud and inner ring gone out, in mutually staggered manner, planet can be engaged to respectively by being respectively arranged with The part gear teeth 34 and 32 of gear 40, for example, each four sections in Fig. 8.In this way, the arbitrary rotation of relay ring gear 30, the part gear teeth 34 and 32, all causing planetary gear 40, reciprocating rotation between two extreme position as pendulum.

And be that driving relay ring gear 30 rotates, it actuates and at least one axial double wedge 125 is provided on the end face of ring 120, it should Double wedge 125 can be respectively embedded into circumferential be distributed in the nick shaped groove 33 of 30 peripheral surface of relay ring gear, and be 2K's with numerical value Circumferential free degree, wherein, K ＞ 0.Most preferably, groove 33 be arranged on each 31 diameter of disc to the midline on, and form single circumferential direction Step-length/angle S1.

In setting, the above structure element of actuating mechanism AC has the effect that.That is, actuating ring 120 often drives relay Ring gear 30 rotates a circumferential direction step-length/angle S1 relative to limiter element 180, all will drive planet by the part gear teeth 34 or 32 Gear 40 rotates once in the fixed reciprocating section of its angle of circumference, and causes eccentric spindle nose 44 in its extreme position E1 and E2 Between, in a manner of primary close to axis X, rotate synchronously primary.Also that is, eccentric shaft head 44 can be only in extreme position E1 or E2 On, and only there is the reciprocating swing type movement Jing Guo its radial direction minimum point.Moreover, in such as visual angle of left view 11, planet The initial rigging position of the interior gear teeth 34 adjacent with two of gear 40 and external gear teeth 32 is, if eccentric spindle nose 44 is in extreme position E1, planetary gear 40 are located at the side clockwise of the interior gear teeth 34, and if eccentric spindle nose 44 is in extreme position E2, planetary gear 40 sides counterclockwise for being located at the interior gear teeth 34.Meanwhile the gear teeth 34 and 32 have the equal number of teeth, which can cause eccentric shaft First 44 just complete the switching rotation between two extreme positions E1 and E2.

Therefore, as long as relay ring gear 30 can be driven to rotate a circumferential direction step-length/angle S1 every time, regardless of whether along Last rotation direction carries out, and the engagement that can complete electric control clutch C4 switches with the actuating for detaching operating mode.And it is to ensure Actuating ring 120, only 30 rotation one circumferential direction step-length/angle S1, actuating mechanism AC of driving relay ring gear has further included step-length control every time Mechanism processed.Referring to Fig. 7,10, which is a steric direction mechanism.It includes, and is set to and actuates corresponding to axially for ring 120 At least two most preferably uniformly distributed end face open-types on the inner peripheral surface of 125 one end of double wedge are oriented to groove 160, are arranged on dish type end Same be oriented to groove 160 two that correspond in the radial hole of the corresponding peripheral surfaces of portion 188a are oriented to pin 260a and 260b, position Spring 262 in radial hole bottom, empty set are contradicted on 180 peripheral surface of limiter element to the preload for actuating 120 other end of ring Spring 154 and, provided for the preloading spring 154 and axial support and be arranged on corresponding circumferential slot on 180 peripheral surface of limiter element In snap ring 184b.Wherein, preloading spring 154 is most preferably a cricoid waveform spring.

Referring to Figure 10, wherein, the guiding groove 160 with circumferential symmetrical structure includes, the groove bottom 162 of interior radial direction, if Axial direction/interior radial protrusion 161 on the axial internal face in the middle part of circumferential direction is put, two inner circumferential wall face 167a and 167b are circumferential Interior radial mode the guide surface 164a and 164b of 161 inner surface of axial projection are respectively connected to, positioned at the circumferential middle part of axial projection 161 The axial end face type notch 163 for being symmetrically provided with face type guide surface 166a and 166b circumferential respectively.Notch 163 is with being oriented to Face 164 and guiding pin 260, on same cross section, have same axial height.In geometric dimension, above-mentioned geometry Element have such numerical relation, S=S1+K, 0 ＜ J≤2K and, the axial height of guide surface 166, more than double wedge 125 Chimeric depth in groove 33.Here, S represent be oriented to pin 260 contradict to inner circumferential wall face 167 and guide surface 164 it Circumferential free degree possessed by preceding, J represent the angle of circumference that guide surface 166 is continued, and the meaning of K is same as above.

Therefore, it is symmetrically located in guiding pin 260a and 260b and starts to contradict to the position of guide surface 164a and 164b respectively Put, and double wedge 125 is exactly in the week admedian best setting of groove 33, actuate ring 120 for example along Figure 10 by Under supreme relative rotation, will because of be oriented to pin such as 260b contradict to inner circumferential wall face such as 167b and can only turning circumference Angle S is simultaneously terminated automatically.The rotation as a result, relay ring gear 30 will just be driven to rotate in same direction a circumferential direction step-length/angle S1, together When, it will also be by guide surface 164a, inside radially compression is oriented to pin 260a, and the latter is made to trackslip and is risen in axial projection 161a Surface, that is, the inner peripheral surface of ring 120 is actuated, and finally just reach and be just embedded in notch 163 to outer radial.Later, As long as revolution actuates ring 120, the rotation guiding role of guide surface 166a can be relied on, is forced and is actuated ring 120 and be axially away from relay Ring gear 30, and before the circumferential wall for contradicting upper groove 33 in double wedge 125, axially remove the groove 33.Therefore, angle of circumference is turned round After S, the blocking type end side that pin 260a will move away from axial projection 161a is oriented to, terminates, to actuating axially trapping for ring 120, to enable It actuates ring 120 and just returns to its initial position/preparation station.Then, under the action of preloading spring 154, actuating ring 120 will be multiple Bitwise shift right, double wedge 125 will be just embedded in next groove 33, wait for the reciprocating rotation entered next time.Clearly as Symmetry in circumferential direction, corresponding to the action process for actuating the relative rotation of ring 120 along Figure 10 from top to bottom, natural complete class It is similar to, so, it repeats no more.

Ring 120 is actuated to complete a reciprocation cycle for revolution, and actuating mechanism AC is also specially provided at least one spring Groove type is reformed mechanism.Referring to Fig. 7, the mechanism include being at least the elastic press type resetting spring 150 of one and, store simultaneously The resetting spring 150 is simultaneously separately positioned on 180 peripheral surface of limiter element and actuates two circumferentially extending types on 120 inner peripheral surface of ring Half groove.Corresponding circumference angle between the respective circumferential wall of half groove of two radial abutment formulas, most preferably completely It is equal, so that the resetting spring 150 in compressive state elasticity can be contradicted to the circumferential wall of two and half groove simultaneously.For just In being axially fitted into position, allow to actuate 120 axial displacement of ring, be set to half groove 300 for actuating 120 inner peripheral surface of ring, most The axially open formed there are one having goodly towards axial 125 one end globality extension of double wedge.It should be noted that for the ease of painting Scheme, groove 300 has been drawn in outside planetary gear 40 in Fig. 7, in fact, it can be located on any appropriate position of circumference.

In setting, the mechanism that reforms has the effect that.That is, in actuating the non-actuation state of ring 120, double wedge 125 is best Ground is exactly in the week admedian initial position of groove 33, referring to Figure 10, and in actuation, allows to actuate 120 phase of ring To 180 turning circumference angle S of limiter element, at that time, by two circumferential walls close to each other of two and half grooves of mutual dislocation The elastic force of the resetting spring 150 of compression should be able to overcome the resistance of preloading spring 154, cause guide surface 166 and axial projection 161 Axial end face be oppositely oriented the friction of pin 260 and trackslip, actuate ring 120 to enable and return back to its initial position.

Then, no matter where court actuates ring 120 to driving rotates relative to limiter element 180, can disappear in driving force Its initial position automatically and immediately and is accurately returned to after mistake, it is simple and reliable.Naturally, the mechanism that reforms is more than spring groove A kind of form of formula, in the prior art with a large amount of adaptive location mechanism for directly selecting or combining, the application is without in detail It is as long as thin for example, the mechanism can realize the purpose reformed automatically after external force disappearance.

So far, only need to be in a manner that pulse be braked it is found that complete the switching of the actuating to electric control clutch C4 operating modes, friction Braking once actuates ring 120, it is made to relatively rotate angle of circumference S, later, can overload skidding.Obviously, the friction catch and side To unrelated, to providing the device of brake force also without special structural requirement.Moreover, the time of required friction catch, that is, engage With the conversion time of separation operating mode, because meal ratio is in working speed and the characteristics of be proportional to angle of circumference S, and with more fast smaller system The characteristics of dynamic time is ofer short duration.Undoubtedly, electric brake mechanism is the optimum device for realizing the friction catch, simply, fast quick-action Make, without larger brake force, facilitate manipulation.

As shown in Fig. 7,9, the electrical actuator EM in the present embodiment is exactly such a electric brake mechanism.Mechanism EM Substantially ushaped fixed pawl 270, by unshowned engaging lug, with axial flexibly positioned/side for reforming Formula is non-rotatably fixedly attached in unshowned rack, and with movable pawl 274 together, is separately positioned on by promoting The axial both ends for the stop flange 121 that 120 outer radial of rotating ring extends out.It, can to improve brake force and reducing electromagnetism the suction-combining force It is attached at least one of associated friction face with will be provided with material or the element optimal of bigger friction coefficient.Pawl 270 Non-model control one end, be used as the secured core of electromagnetic mechanism.It is solid that the axial projection of 274 outer end of pawl is slidably disposed through this The axially extending bore of fixed core is fixedly linked with movable core 276.For example, to be set to the axial projection of 276 inner end of movable core 275 are fitted into interference to the mode of the corresponding axial hole of pawl 274.

If it is apparent that stop flange 121 is arranged to the tubular flange as shown in Figure 12,14 and 17, electrical actuator The simple structure that EM will can most preferably have axial restraint.Should not it show in Figure 10 in passing, it is noted that illustrate for convenience Go out the profile of stop flange 121.

One end of the resetting spring 272 on movable core 276 is set in, is contradicted to around secured core and movable core The yoke 230 of 276 settings, the other end are contradicted to the washer 277 of reforming equally being set on movable core 276.It reforms washer 277 interior hole end surface, it is axial to contradict to the radial flange of 276 outer end of movable core, the outer radial protrusion/side for washer 277 of reforming Edge, it is axial to contradict to the internal face of the flange 279a of locating part 278.It is fixedly attached to the flange of the locating part 278 of pawl 270 The internal face of 279b, then it is axial to contradict to the inner face outer rim of yoke 230.In this way, after braking each time, locating part 278 Ensure that stop flange 121 is equal with the spacing of 270 and 274 both sides of pawl, non-brake friction will not be generated.Moreover, limiting Free spacing between movable core 276 and secured core that part 278 is limited, is being braked more than or equal to stop flange 121 Axial freedom between pawl 274 and 270.

In setting, above-mentioned electrical actuator EM has the effect that.That is, the friction brake force that mechanism EM is provided, greatly In the resistance inside electric control clutch C4 for actuating ring 120 and being subject to, and the power torque transmitted less than limiter element 180 Or coherence torque.That is, pulsatile once formula electric energy is transmitted to the yoke 230 of electrical actuator EM, it can be so that its friction system A stop flange 121 is moved, promotes to actuate ring 120 with respect to 180 turning circumference angle S of limiter element, it is later, just opposite to actuate ring 120 frictions are trackslipped.Most preferably, it should immediately power off to terminate friction catch after the S of turning circumference angle.For example, by groove 160 The circumferential both ends of wall surface are arranged to end face guide surface, can utilize the axial movement for rotating guiding role generation, turn over circumference When the S of angle, a travel switch being set in rack is touched in a known manner, so as to fulfill the purpose powered off in time.

Therefore, the course of work of electric control clutch C4 and method of operating are comparatively simple, as long as when it is worked normally, to electricity Actuating mechanism EM transmits pulsatile once electric current, causes its braking primary, you can completes primary engagement and switches with detaching the actuating of operating mode. So based on above-mentioned detailed description, the application unnecessary necessity of repeated explanation again.But it must be noted that work The switching manipulation of condition, it is necessary to be completed in the rotation status of electric control clutch C4, the switching cannot be completed in stationary state. This point is different from previous embodiment.Moreover, when as clutch, to generate braking moment, stop flange 121 is required opposite Electrical actuator EM is rotated.Should be most preferably coupled to the component as torque source that is, actuating ring 120, that is, it is used as braking It should be torque input component rather than torque output that flange 121, which sets the limiter element 180 on basis, alternatively, limiter element 180 to It should be in rotary state less.Certainly, it is actively rotated or the ability of coherence rotation as long as having, coupled to output and can be with 's.For example, when substituting the slipping toothed electromagnetic clutch in four-high mill, both ends are coupled respectively to the application feelings of a motor Shape.

Distinguishingly, for example, being coupled to friction member 70, and can also pass through by electrical actuator EM coupled to torque input component Slip ring is connected to external power supply.At that time, even if limiter element 180 is stationary, the modification of electric control clutch C4 is used as Clutch, having can be activated to realize the switching capability engaged with detaching operating mode at any time.

And in the application for being used as brake in electric control clutch C4, then there is no above-mentioned limitations.Moreover, as institute above is whole Body with reference to two basic patent applications described in because limiter element 180 is non-rotatable, actuating mechanism AC at this time and electroluminescent Motivation structure EM can in a more direct manner, and circumferential driving support member 220 rotates.Even when only needing one-way brake, Ke Yizhi Driving intermediate piece 90 is connect to rotate.For example, by response to electromagnetic force or electrodynamic electromagnetic switch or stepper motor, directly drive Tangentially-arranged worm gear mechanism, link mechanism, flexible rope draw-off mechanism or the present embodiment eccentric groove mechanism etc.. Accordingly, the component being braked should be the friction member 70 in Fig. 7, and the ability skidded without overload.And to obtain Carry the stopping power skidded, the frictional connectors of core and first axle 200, it should which there is structure setting shown in Fig. 2.Also That is, when electric control clutch C1 is used as brake, there is the overload skidding ability to wheel by axis just now.

It is emphasized that as described above, the electrical actuator EM in Fig. 7 is only an example, can have and ring It should be in electromagnetic force or electrodynamic any appropriate mechanism form, as long as it is capable of providing the friction catch work(that can be skidded after overload Energy.For example, the hawkbill shape brake apparatus with swivel pin driven by electromagnetism the suction-combining force or motor torque.Moreover, because It is not the entire electric control clutch such as C4 of braking, but drives and actuate ring 120 relative to the rotation only one circumference of limiter element 180 Angle S, time only need very short such as 0.01 second or so, it is therefore desirable to the brake force very little that electrical actuator EM is provided, consumption Electricity is naturally even more small.

Embodiment five：Circumferentially actuate space-like wedging type electric control clutch C5

As a simple variant of electric control clutch C4, electric control clutch C5 is because only in one direction there is operating mode to cause The ability of dynamic switching, and structure is made to have the simplification of part.Referring to Figure 12~13.

First, the guide groove 240 of eccentric rail groove mechanism is a nick shaped guide groove for extending radially to 222 peripheral surface of the arm of force, Its radial direction bottom is provided with the spring steel wire 110 of outer radial extension, to substitute wall surface 242, and most preferably contradicts always to bias Spindle nose 44.Therefore, adjustment spring 152 can be saved, it is ensured that the elasticity of support element 220 enters wedge and rigidity removes wedge.Also that is, eccentric shaft The first 44 circumferential directions contradicted with compressed spring steel wire 110, as activate stepless supporting mechanism SS and establish the stepless support Direction, and its rigid circumference contradicts the direction of wall surface 244, and stepless supporting mechanism SS is as caused to remove the side of the stepless support To.

Secondly, for the ring gear 280 for being provided with the gear teeth 282 to be non-rotatably connected to the peripheral surface of limiter element 180, promote Rotating ring 120 is by rotatably arranged with having arrived on the outer end face of disc-like end portions 188a.Actuate the inner peripheral surface of the interior radial flange of ring 120 On, it is provided with the part gear teeth 34 for being persistently engaged to planetary gear 40, no less than two are most preferably evenly equipped on the flange is in The limit hole 127 of circumferentially extending.The position-limitting pin 190 of tail end flange is provided with, across limit hole 127 and is fixedly attached to dish type In the axial hole of end 188a outer end faces, while rotationally axially fixation actuates ring 120, the circumferential direction of the latter is also defined Degree of freedom.In the angle of circumference S1 corresponding to the circumferential free degree, the part gear teeth 34 can cause planetary gear 40 just to complete half The relative rotation of week/180 degree, and cause the eccentric spindle nose 44 rotated synchronously just stop at two circumferential extreme position it One, so as to which support element 220 be forced to establish or remove the stepless support.

Again, it is during actuating ring 120 and circumferentially reforming, eccentric spindle nose 44 is no longer driven to rotate, planetary gear 40 The ratchet-type ring gear that is equipped with even number unidirectionally interior ratchet of the empty set in the inside of 42 tail end flange of planet axis 47 is modified to, with the ring gear The pin shape pawl 264 of ratchet engagement and preloading spring 266, are arranged on the radial hole positioned at 42 peripheral surface of planet axis in unidirectional In.Then, actuate ring 120 can only in one direction, by planetary gear 40 and the part gear teeth 34 and it is unidirectional in ratchet Engagement driving planet axis 42 rotates, and the latter cannot be driven to rotate in the opposite direction.So work of the single direction ratchet mechanism Direction determines the operative orientation of electric control clutch C5, also that is, electric control clutch C5 can switch the rotation direction of operating mode.

Therefore, as previously mentioned, in the work rotation process of electric control clutch C5, as long as unshowned electrical actuator EM It completes that once the friction catch (referring to Figure 17) of stop flange 121 can be completed once to engage and be cut with detaching the actuating of operating mode It changes.The mechanism and unshowned at least one spring groove formula for example shown in Figure 17 including resetting spring 150 is reformed, will cause 121 self-return of stop flange.Obviously, the thought based on example IV, two round circumferentially extending grooves of the mechanism that reforms, It is separately positioned on disc-like end portions 188a and actuates on the competing end face of 120 both sides of ring.

Embodiment six：Circumferentially actuate space-like wedging type electric control clutch C6

As shown in Figure 14~16, electric control clutch C6 is also the modification to electric control clutch C4.

First, it to realize axis-axis transmission, is additionally arranged and 60 inner peripheral surface of tubular matrix is non-rotatably connected to by flat key Second axis 210.To ensure concentricity, on the inner face of the second axis 210, it is most preferably provided with the cylindrical center of coaxial line X Protrusion 214, is accommodated in the centre bore 204 of the coaxial line X of 200 inner face of first axle, and be most preferably spaced to roll Dynamic needle roller 206.

Secondly, actuating mechanism AC is the composite structure for including a cotter way formula guide-bar mechanism and a disk cam mechanism. Wherein, the rod-shaped matrix of whole of the guide rod 20 in guide-bar mechanism, the radial mode being slidably disposed on support end face 189 In the straight guide groove 22 of benchmark, and most preferably gap is separated by support end face 224.It, can positioned at the cam pin 26 of 20 radial outer end of guide rod In axially extend to disc cam ring 250 circumferential cam path 254 with trackslipping.Positioned at the backing pin 24 of 20 radial inner end of guide rod, together To and with can trackslipping axially extend to positioned at support end face 224 the switching guide groove 140 substantially radially extended in.Referring to figure 15, switch the circumferential surface of radial outside of guide groove 140 on the side wall surface of arrow R, being provided with that backing pin 24 is caused to keep The firmly protrusion 142 of circumferential blocked state.The radially inner side of the protrusion 142 is formed with the interior guide surface for being connected to side wall surface 144.Adjustment spring 152 is arranged on rotation guiding mechanism UG radially outside, and one end head c is connected to the arm of force 75 or disc-like end portions 188a, another end d are then connected to support element 220 or its arm of force 222.In this way, 220 relative friction part of support element can be caused 70, constantly bullet pull to arrow P directions, that is, by opposed facing guide surface 64 and 234 towards the direction being mutually adjacent to Constantly bullet is drawn.Certainly, after cancelling adjustment spring 152, which also can be for example, by being arranged to backing pin 24 to have both circumferential bullet Property, and protrusion 142 is changed to the mode being located on the wall surface of opposite side and is obtained.

The disc cam ring 250 of disk cam mechanism is one and is rotatably set on 180 peripheral surface of limiter element Stepped annulus, by the axially extending tubulose inward flange 256 and tubulose out of radially inner and outer side difference of its radial flange outer end Outward flange 258, while limiting circumferential cam path 254, outward flange 258 is also with the radial flange of conflict to disc-like end portions 188a The mode of 182 inner face, the ground diameter that can trackslip is to closing guide rod 20.The cam path 254, it is most preferably circumferential in an interleaved manner It is evenly equipped with radial direction extreme point IP and outer radial extreme point OP in each β, the angle of circumference between each two adjacent extreme point, that is, It pushes into or motion angle for return travel, is S1.For example, β=4 in Figure 15, S1=45 degree.Therefore, cam pin 26 in extreme point IP and It is primary per displacement between OP, backing pin 24 can be driven to radially move a lift height, and acted on by mobile guide, completion pair The primary actuating of stepless supporting mechanism SS.

In setting, every element of mechanism AC has the effect that.That is, when cam pin 26 is located at position shown in figure 15 It puts, that is, when at radial direction extreme point IP in one of cam path 254, backing pin 24 will be accordingly in switching guide groove 140 Radially inner side section, and cannot most preferably contradict to switching guide groove 140 two circumferential walls, but adjustment spring 152 to support The circumferential bullet of part 220 is drawn, and but actuated stepless supporting mechanism SS and electric control clutch C6 is caused to enter engagement/wedging state. And 26 radial direction of cam pin is risen in the rise of an outer radial extreme point OP of cam path 254, backing pin 24 by first radial interference extremely Interior guide surface 144, then in a manner of mobile guide, support element 220 is driven to overcome the elastic force of adjustment spring 152 and act on Guide surface 234 and the frictional resistance of support end face 224, arrow R direction relative frictions part 70 rotates along Figure 15, Jin Erzhi Stepless supporting mechanism SS moments is made to lose axial supporting role, that is, force to cancel the axial force envelope of the frictional connection mechanism Enclosed contradicts connection, and electric control clutch C6 is caused to detach/solve wedge.Later, the circumferential wall that backing pin 24 will slide into protrusion 142 On, that is, on its top surface, to be continuously kept non-supported operating mode/state of stepless supporting mechanism SS.

Obviously, switching guide groove 140 also radially can reversally be set, but shortcoming is, the relatively large solution wedge process of driving force Centrifugal force cannot be not only borrowed, also extraly to overcome the influence of the centrifugal force instead.

Again, for 250 opposing cam pin 26 of dish type cam ring can be driven to rotate in both circumferential directions, actuating mechanism AC further includes an adaptive bidirectional ratchet mechanism.The ratchet mechanism includes, and is set to 250 tubular matrix periphery of cam ring Two-way ratchet 252 on face, such as axially extending rectangular section tooth are set on the stepped ladder outer shroud for actuating ring 120 At least a pair of of the pawl 112 and 114 for corresponding to different circumferencial directions, referring to Figure 14,16.System is provided on the ladder outer shroud Dynamic flange 121 and an accessory flange for being mainly used for supporting pawl.Regularly it is arranged in two radial mode flanges extremely A pair is corresponded to the pawl 112 and 114 of varying cross-section, with axis by each pawl axis 116 in few a pair of corresponding axial hole To series connection mode rotationally it is radially fixed live.It is set in not showing on the pawl axis 116 between a pair of of pawl 112 and 114 In a manner of being contradicted respectively to a pair of pawl radial outside by two ends, which is constantly distinguished for the torsional spring gone out It suppresses to two-way ratchet 252.

To realize the adaptive work of bidirectional ratchet mechanism, which further includes a pawl Option stage 290.As Figure 14, Shown in 16, the interior radial protrusion 296 of pawl Option stage 290 axially slidably extends radially to be arranged on power in complementary fashion In the corresponding recesses with radial direction entrance on arm 75, and there is axial freedom/gap more than or equal to δ ' each other.When So, which can also have best axial entrance as illustrated in fig. 14.The end face of raised 296 radial outside, can turn It is contradicted dynamicly to the stepped inner face for actuating ring 120, other end, rotationally contradicted to the rank of disc cam ring 250 The outer end face of terraced inner ring/tubular matrix, so as to be defined axial position.And the matrix of the arc-shaped of pawl Option stage 290, it can It is rotatably arranged between two-way ratchet 252 and the radial direction of ladder outer shroud for actuating ring 120, is provided on the matrix respectively by it Middle part circumferentially extends to both ends and corresponds respectively to the sleeve configuration window 292 and 294 of pawl 112 and 114.It is located at by this two Window 292 and 294 on varying cross-section, pawl 112 and 114 can be engaged to two-way ratchet 252, and in circumferential conflict respectively To before the circumferential wall 293 and 295 of two windows, at least one angle of circumference S1 is rotated relative to corresponding window.Obviously, by In positioned at different cross sections, rotation of the ring 120 relative to limiter element 180, that is, turn of opposite pawl Option stage 290 are actuated It is dynamic, pawl in the same direction once can only adaptively be caused to be in meshing state, and reversed pawl, because corresponding window cannot be embedded in Mouthful, and can only reciprocally be slided once along the arc-shaped outer surface of pawl Option stage 290.

In setting, entirely enter wedge control mechanism and have the effect that.That is, position-limitting pin 190 is in limit circumferentially Circumferential free degree in the hole 127 of position is exactly equal to twice of S1, and the steady working condition of engagement or the separation in electric control clutch C6 In, that is, in non-actuation state, it is exactly in the circumferential centre of limit hole 127.Meanwhile a pair of of pawl 112 and 114 is just In the center position shown in Figure 16, and the two-way ratchet 252 that can be engaged to first is contradicted respectively, and contradicting to corresponding Wall surface 293 or 295 before, two-way ratchet 252 can be driven to rotate an angle of circumference for being not less than S1.Wherein, angle of circumference S1 should be exactly equal to be two-way 252 circular pitch of ratchet integral multiple.

Therefore, with the course of work all fours of electric control clutch C4, method of operating is more just the same, also in automatically controlled When clutch C6 is worked normally, pulsatile once electric current is transmitted to its electrical actuator EM, causes its braking primary, you can to complete primary It engages and switches with the actuating for detaching operating mode.So based on above detailed description, without repeating one to its course of work again Time.But it should be recognized that because the guide type friction of elastic force need not be overcome to trackslip, so, relative to electric control clutch C4, electricity The required rigidity of resetting spring 150 in clutch C6 is controlled, can significantly be small, thus the trigger-type power consumption of its change operating mode will more It is few.

It is important to point out that during assembling, should guide rod 20 radially first be entered into position together in company with 220 grade components of support element, it Afterwards, then successively disc cam ring 250, pawl Option stage 290 are inserted in, after resetting spring 150 is positioned, is finally inserted in and actuates ring 120 and position-limitting pin 190 in place.Obviously, position-limitting pin 190 also actuates ring other than limiting angle of circumference S1 with axial restraint 120 effect.

In addition, also changeable type is the combined mechanism for including two face type single direction ratchet mechanisms to bidirectional ratchet mechanism.Wherein, A pair of of pawl 112 and 114 is modified to be separated with the single direction ratchet ring of the teeth face outwards of spring between two.Two ratchet rings are together When following the synchronous rotation of stop flange 121, wherein that reversed ratchet mechanism, will be arranged on itself and pawl Option stage Rotation guiding mechanism between 290 radial directions, such as the cotter way formula mechanism of circumferentially extending are compressed axially to losing engagement capability, from And it cannot be engaged when reforming rotation.

Embodiment seven：Circumferentially actuate space-like wedging type electric control clutch C7

Referring to Figure 17, electric control clutch C7 is the simple combination formula modification to electric control clutch C4 and C6.Primarily to It realizes the axle-wheel formula transmission of one-way only operation, and actuating mechanism AC and electrical actuator EM is moved to its axial outer end.For This, actuates ring 120 and is modified to one and be arranged on the peripheral surface of tubular flange 187, and by the stepped of 184 axially position of snap ring Annulus.Spring groove formula including resetting spring 150 is reformed mechanism, be also disposed in actuate ring 120 and flange 187 radial direction it Between.The radial outside portion of resetting spring 150 is housed in the rank for being connected to inner face for actuating 120 ladder inner ring inner peripheral surface of ring In stepped recess 300.The position-limitting pin 190 in the open recess 300 is axially extended to, the circumferential wall phase with the groove 300 Cooperation, angle of circumference S1 is defined to by the circumferential free degree for actuating ring 120.

In order to which relay ring gear 30 is driven to one-directionally rotate in a stepwise manner, the single direction ratchet of single direction ratchet mechanism, which is arranged on, to be connect On the inner peripheral surface of power ring gear 30, at least one circumferentially uniformly distributed pawl 112 is arranged in the ladder inner ring for actuating ring 120 In the corresponding circumferentially extending type notch of end face, unshowned spring, such as springs is then arranged on the back of the body of pawl 112 Between the peripheral surface of face and flange 187, and trackslip in company with the notch is reciprocating together.In axial direction, pawl 112 and relay ring gear It 30 one, is actuated the stepped inner face of ring 120 and limits with can trackslipping.Meanwhile it by the unidirectional ratchet of inner peripheral surface, connects Power ring gear 30 is radially supported on the peripheral surface for the ladder inner ring for actuating ring 120 in which can trackslip.

The course of work and method of operating of electric control clutch C7 is quite analogous to, and uniaxially pulsed is braked, this In be not repeated to illustrate.

Above is only description and the diagram that the present invention is directed to that its limited embodiments is given, and it is a degree of special to have Property, it is understood that, mentioned embodiment and attached drawing are all merely illustrative rather than limit the present invention and its protect Range is protected, various change, equivalent, exchange and the change of member position or structure carried out to them will all be considered not taking off Leave the spirit and scope of present inventive concept.

Claims

1. a kind of space wedge type electronic control clutch, including：

Around an axis revolution and can axial engagement at least one traction friction mechanism, have turn round and be all provided with around the axis At least substantially ring-like intermediate piece and friction member of rubbing surface is equipped with, the intermediate piece and the described of the friction member both sides rub Wiping face can form at least one traction friction pair with axially offseting, to transmit friction torque；

Engaging force and at least one rotation guiding mechanism turned round around the axis are provided for the traction friction mechanism, is had It is turned round around the axis and is both provided at least substantially ring-like guide part of corresponding guide surface and the intermediate piece, it is described to lead Guiding friction pair can be formed to part and the guide surface of the intermediate piece both sides with axially offseting；And

In response to inputting its internal electric signal and act enter wedge control mechanism, by being operatively controlled the intermediate piece Enter wedge reconciliation wedge, to control the engagement of the electric control clutch with detaching；

Wherein, the mutual lift angle λ for contradicting position of the guiding friction pair, more than zero and less than or equal to ζ, that is, 0 ＜ λ≤ζ, ζ It is that can cause in the guiding friction pair and the secondary circumferential direction of the traction friction the value open interval of the lift angle λ of not self-locking Small end endpoint value.

2. electric control clutch as described in claim 1, it is characterised in that：

Further include at least one limiter element；And

At most one in the guide part, the intermediate piece and the friction member, be at least through non-rotatable connection side Formula includes the force-closed type combined member of the limiter element, is connected with establishing closed contradict of mutual axial force.

3. electric control clutch as described in claim 2, it is characterised in that：It is described enter wedge control mechanism include set around the axis It puts in the stepless supporting mechanism being supported between part and the limiter element, has and set around the axis and at least in substantially Cricoid support element, the support element contradict and rotate two kinds of connection modes of guiding by axial, be respectively connected to the limiter Element and it is described be supported part, and in a manner of it can rotate guiding, it is axial infinitely push away it is described be supported part, so as to establish Closed contradict of axial force between the limiter element and the guide part, the intermediate piece and the friction member connects；

The actuating mechanism being arranged in the limiter element is drivably connected to the support element and the limiter element, The support element is caused to be supported part rotation relative to described with manner of actuation, so as to which the stepless supporting mechanism be caused to establish and remove Closed contradict of the axial force is sold to connect；And

Electrical actuator in a manner of responding electric signal, operably activates the actuating mechanism, so that the actuating mechanism Complete its actuation actions；

Wherein

It is described be supported part be in the guide part, the intermediate piece and the friction member with the limiter element non-rotatably Be connected that；

The circumferential free degree of the relatively described limiter element of the support element is at least big to causing the stepless supporting mechanism that can build The vertical closed degree for contradicting connection of the axial force.

4. electric control clutch as described in claim 3, it is characterised in that：The actuating mechanism includes actuating ring, described to actuate Ring is movably connected with to the limiter element.

5. electric control clutch as described in claim 4, it is characterised in that：The electrical actuator is in response to electromagnetic force or electronic Power and act.

6. electric control clutch as described in claim 5, it is characterised in that：

The electrical actuator is an electromagnetic mechanism for including armature, directly causes described to actuate ring phase with electromagnetism the suction-combining force The limiter element is moved axially.

7. electric control clutch as described in claim 5, it is characterised in that：The electrical actuator is a frictional electric braking Mechanism in a manner of friction catch, causes described to actuate the relatively described limiter element of ring and circumferentially rotate.

8. by claim 4~7 any one of them electric control clutch, it is characterised in that：The actuating mechanism includes at least one A resetting spring, be directly or indirectly set to it is described actuate between ring and the limiter element, to drive described actuate Operating position when ring is automatically restored to non-actuation state.