CN201314345Y - Self-supporting separation retaining mechanism of axial automatic-control clutch - Google Patents

Abstract

The utility model relates to a self-supporting separation retaining mechanism which is characterized by not only comprising a separation mechanism and a blocking rabbeting mechanism, but also comprising a standstill locking control mechanism, a releasing control mechanism and a fixed-point actuating control mechanism. In the blocking work condition, a circumferential relative moving separating ring, a spring and a same assembly finally axially support the ring and the spring, wherein all intermediate supporting components of the same assembly are still. When the period from starting with beyond rotation to that the blocking rabbeting mechanism establishes an axial blocking relation, the standstill locking control mechanism can guarantee the relative rotation inside the mechanism. Then, the releasing control mechanism recovers the integrated rotating relation inside the mechanism, and the spring compressing force can not generate any frictional resistance moment. In the rabbeting and resetting process, the blocking rabbeting mechanism is actuated by a positional actuating mechanism so as to guarantee that a clutch can be exactly and reliably rabbeted. The self-supporting separation retaining mechanism has the advantages that: the mechanism can more guarantee the absolute exactitude and reliability when the clutch is recovered and rabbeted on the basic of guaranteeing that the axial automatic-control clutch is axially separated completely and the relative rotation has no impacts; and an unloaded torque is completely irrelevant to axial pressing force.

Description

The self-supporting separation retaining mechanism of axial auto-controlled clutch

Technical field

The utility model relates to a kind of axial auto-controlled clutch in the mechanical transmission fields, and, be used to keep the retaining mechanism of its separated state after particularly a kind of spring pressing formed type auto-controlled clutch axial separation such as other transmission devices such as tooth embedding no-spin lockup that comprise this kind auto-controlled clutch.

Background technique

The axial elasticity pressing formed type auto-controlled clutch of prior art comprises jaw overrunning clutch, tooth embedding safety clutch, and spring steel ball safety clutch, and the state that does not all possess after the axial separation keeps function.Relatively rotating after its axially chimeric fixing, mobile eseparation ring axial separation must have impact, collision, noise and the over worn shortcoming of end face tooth, to the bigger tooth embedding safety clutch of axial elasticity pressure force in addition can be seriously to the degree of the end face tooth that fractures.And by the axial jaw self-locking differential mechanism that forms of duplex back-to-back of two two-way jaw overrunning clutch, though it is fixed, mobile eseparation ring possesses axial separation and keeps function, but still there are the collision type wearing and tearing that separate the tooth gear tip clearance, requirement to spring rate that pressure force is provided, spring length, assembling is too harsh, and can not compensate for wear etc. shortcoming.

The application number that the applicant proposes be 200710152151.9 axial auto-controlled clutch by name separating retention mechanism at careful Chinese patent, eliminated above-mentioned shortcoming.But in stopping operating mode, the final supporting member of mobile eseparation ring (as frame, pedestal, eseparation ring or housing etc.), the chimeric object ring that is still by having a relation of relatively rotating with this ring to provide axially support to this ring, has inevitable relatively rotating between itself and the middle support member.That is " it supports " pattern that remains the preceding prior art of its application of employing.Between the axially support ring of catch ring and catch ring, separate between the tooth tooth top or exist the sliding type mechanical wear that is proportional to the axial elasticity pressure force between the power transmission tooth tooth top unavoidablely, and corresponding non-load friction drag torque and heating, be unfavorable for lifting, the associated components life-time dilatation of its performance, and be applied in and stop that operating mode is more or be the transmission position/occasion of normality.

In addition, when resetting according to the axial auto-controlled clutch of this invention is chimeric, the spline position of the axially support ring of the relative catch ring of its catch ring has randomness and arbitrariness, this must cause its two chimeric ring to begin the randomness and the arbitrariness of the circumference initial position when chimeric, can not guarantee that chimeric both sides beginning between the chimeric sintering of the best is chimeric.Simultaneously, the relative movement orbit line of its chimeric both sides in chimeric reseting procedure is again a helix (lift angle is unfixing, in the nonstatic state).Therefore, such clutch exists axially goes up not exclusively chimeric situation, has increased the harmful wearing and tearing on the flank meaninglessly.And thisly also do not reach the axial chimeric degree of depth each other at two chimeric rings, the flank of both sides' power transmission tooth just has been in contact with one another even has begun the situation of transmitting torque, be particularly harmful to wherein free wheel device and based on its jaw self-locking differential mechanism, because this causes the power transmission tooth to collapse damage because of contact strength transfinites probably.This kind deficiency for two power transmission teeth from the tooth top edge zero contact position to begin chimeric extreme case especially serious.

Therefore, for adapting to the characteristics of chimeric both sides' this relative helical rotation in the chimeric reseting procedure, improve the reliability of chimeric reseting procedure, assurance is axially chimeric fully and prevent to collapse tooth, and the flank of power transmission tooth must be recessed shape (contracting in the tooth root) on the two chimeric rings of free wheel device.Trapezoidal horizontal stroke/circumferential the sectional shape that falls is exactly the simplest selection that adapts to these needs.But this has not only strengthened difficulty of processing and cost, and the more direct bearing capacity that reduces the power transmission tooth.Can reduce the degree that contracts in the power transmission tooth tooth root though increase the axial elasticity pressure force, but the needs that contract in can not eliminating (in contract degree also with the quality of mobile eseparation ring, to surpass in reverse more rotational velocity etc. relevant, and, but also will pay the cost that increases the unloaded drag torque and the rate of wear therefore the more impossible infinity of elasticity pressure force).

For example, З И Л-164 type jaw self-locking differential mechanism (" automotive axle design " Liu Weixin of the prior art, publishing house of Tsing-Hua University in April, 2004, p273～277), be exactly its elasticity pressure force to be designed on 470.4 Ns level according to above-mentioned thought, power transmission tooth tooth root simultaneously contracts in the tilt angle with about 6.4 degree, during in the hope of chimeric resetting, can make its gyrate track that moves axially power transmission tooth on the eseparation ring be parallel to its rotational axis (in 6.4 degree) as much as possible, eliminate and collapse the possibility of decreasing the power transmission tooth.But excessive elasticity pressure force has strengthened the difficulty of its control catch ring, and this control difficulty has strengthened its requirement to spring parameter stability and precision again conversely, thereby has increased cost, has reduced functional reliability.

The model utility content

The utility model is devoted to address the above problem.

The purpose of this utility model, be to provide a kind of fixing chimeric circumference initial position and movement locus of resetting that have, axially go up and do not have not exclusively chimeric possibility, stop in the operating mode self-supporting separation retaining mechanism of circumferentially relative static axial auto-controlled clutch between all axial support member of mobile eseparation ring and its.

For reaching the foregoing invention purpose, the utility model provides a kind of self-supporting separation retaining mechanism of axial auto-controlled clutch, comprise: rotate guiding type and separate chimeric mechanism, its have around same rotational axis rotate can be axially chimeric eseparation ring and mobile eseparation ring, but with mobile eseparation ring not only can moving axially but also joining second rotary member of form of transmitting torque, and spring and spring seat; This mechanism utilizes the rotation that surmounts between mobile eseparation ring and the eseparation ring, causes mobile eseparation ring axially away from eseparation ring, to remove the axially chimeric of this mechanism self; And, have the chimeric mechanism that stops of axially chimeric catch ring and mobile catch ring, all be formed with blocking teeth on this two ring, separate the axially chimeric of chimeric mechanism in surmounting operating mode, to stop, be maintained the axial separation state of this mechanism; It is characterized in that: stop in the operating mode that the same member final axially support all static by the eseparation ring that circumferentially relatively moves, spring and all middle support member moves eseparation ring and spring; Also comprise rotation preventive mechanism with spline reference rings and spline ring, its be used for from surmount rotate beginning to stop chimeric mechanism set up axially stop relation before, cause catch ring can not follow mobile catch ring unitary rotation; Also comprise releasing mechanism, be used to remove the circumferential constraint of rotation preventive mechanism catch ring, with stop chimeric mechanism set up axially stop relation after, recover the freedom that catch ring is followed mobile catch ring unitary rotation; And, also comprise at least one ratchet-type fixed point actuating mechanism, it utilizes surpassing in reverse more between mobile eseparation ring and the spline reference rings to rotate, when the relative spline reference rings of catch ring turns to specific circumferential position, actuating stops chimeric mechanism, stops operating mode and recovers the chimeric of this mechanism self and whole clutch with end.

More good improvement project of the present utility model is provided by dependent claims.

Of particular note, the implication of used related notion of the utility model file or noun is as follows:

Coenosarc: the abbreviation of coexistence one refers to that a plurality of members are merged into a solid memder.

Lost efficacy: refer to mechanism or part because artificial or odjective cause cisco unity malfunction, lose the implication of its fundamental function.For example, in the mode of destroying the member fundamental relation with ratchet in the ratchet mechanism and the axial mutual dislocation of ratchet, perhaps, in the mode of destroying the member basic exercise its ratchet is obligated on the disengaging configuration, this ratchet mechanism all will lose efficacy because of the two can not realize engagement.

Stop operating mode: promptly surmount operating mode, the blocking teeth that stops both sides in the chimeric mechanism axially on mutually to top contact, stop and separate the chimeric working condition of chimeric mechanism, be that chimeric operating mode is relative with the non-operating mode that stops.

Axially chimeric: chimeric both sides' chimeric or separation all is attended by a kind of chimeric pattern that both sides axially relatively move in the chimeric mechanism; Its chimeric tooth can be formed on both sides' end face, the conical surface or the cylndrical surface.

Surmount rotation: promptly be in a kind of the relatively rotating between any two members of transmission of torque upstream and downstream in the axial auto-controlled clutch, refer in particular to and to cause relatively rotating of axial auto-controlled clutch axial separation.And both sides' surmounting relatively rotating of direction of rotation with this and be to surpass in reverse more and rotate in stopping operating mode.

Rotate guide mechanism: relatively rotate to activating the mechanism of motive force to produce/axially to be relatively moved by circumference.Both comprise the screw mechanism of lead angle strict conformance etc., also comprised lead angle not radial peg groove mechanism, end ratchet mechanism, the chimeric mechanism of end face and the cylindrical cam mechanism etc. of strict conformance.The chimeric mechanism of separation in the utility model is the rotation guide mechanism.

Relative prior art, self-supporting separation retaining mechanism according to axial auto-controlled clutch of the present utility model, can guarantee that mechanical wear relevant with the elasticity pressure force in (stopping in the operating mode) axial auto-controlled clutch and unloaded drag torque are eliminated substantially or thoroughly elimination, cause the Applicable scope of clutch to be enlarged, all be able to significant prolongation the working life of associated components and even whole clutch.And special benefit is more arranged for free wheel device wherein, that is, there is not exclusively chimeric possibility in the chimeric mechanism of its power transmission, the power transmission tooth tooth root that contracts in need not, and technology difficulty and fabricating cost reduce, and Performance And Reliability gets a promotion.

Description of drawings

Fig. 1 is the axial section according to the mono-directional overrun clutch of simple structure of the present utility model.

Fig. 2 is the structural representation of shift(ing) ring among Fig. 1.

Fig. 3 is catch ring, the spline ring of coenosarc among Fig. 1 and the schematic representation that discharges ring, is that it axially partly cuts open figure (a), (b) is the enlarged diagram after H direction partial structurtes are launched in (a).

Fig. 4 is the chimeric mechanism of the power transmission among Fig. 1 (1), separate chimeric mechanism (1), rotation preventive mechanism (2), releasing mechanism (3) and the flank profil that stops (4) five mechanisms of chimeric mechanism, the series of the part of the radially projecting on same external cylindrical surface is launched schematic representation, and corresponding fixed point actuating mechanism (3) launches schematic representation at the imaginary axis of ratchet shaft section of living in to the series of the part of projected outline, wherein, (a) corresponding to chimeric operating mode, (b) finish corresponding to the separating mechanism axial separation and moment that releasing mechanism is started working, (c) corresponding to the moment of rotation preventive mechanism end spline, (d) begin to activate the moment that stops chimeric mechanism corresponding to the fixed point actuating mechanism; Arrow is represented the sense of rotation of shift(ing) ring relative fixed ring among the figure, and represents the spline ring of coenosarc and discharge ring with equivalent profile of tooth.

Fig. 5 is the axial section according to the simplification of the mono-directional overrun clutch of packing forms one of the present utility model.

Fig. 6 be coenosarc among Fig. 5 catch ring, discharge ring axially partly cut open schematic representation.

Fig. 7 is the axial section according to the mono-directional overrun clutch of axle-shaft drive formula of the present utility model.

Fig. 8 is the schematic representation of catch ring among Fig. 7, (a) be right elevation axially partly cut open figure, (b) be plan view.

Fig. 9 is the schematic representation that Fig. 7 ends change, (a) be right elevation axially partly cut open figure, (b) be plan view.

Figure 10 is the schematic representation of ratchet among Fig. 7, (a) is worm's eye view, (b) is plan view, (c) is plan view.

Figure 11 is the schematic representation of second rotary member among Fig. 7, (a) is plan view, (b) is the enlarged diagram after H direction partial structurtes are launched in (a).

Figure 12 is the axial section according to the mono-directional overrun clutch of packing forms two of the present utility model.

Figure 13 is the schematic representation of the shift(ing) ring of coenosarc among Figure 12, mobile eseparation ring, mobile catch ring, (a) is right elevation, (b) is the axial section of plan view.

Figure 14 is the schematic representation of catch ring among Figure 12, (a) be right elevation axially partly cut open figure, (b) be plan view.

Figure 15 is the schematic representation that Figure 12 ends change, (a) be right elevation axially partly cut open figure, (b) be plan view.

Figure 16 is the schematic representation that discharges ring among Figure 12, (a) is the axial section of right elevation, (b) is plan view.

Figure 17 is the schematic representation of ratchet among Figure 12, (a) is worm's eye view, (b) is plan view, (c) is plan view.

Figure 18 is the chimeric mechanism of the power transmission among Figure 12 (1), separate chimeric mechanism (1), stop chimeric mechanism (1), releasing mechanism (1), the series of the part of the radially projecting of flank profil on same external cylindrical surface of rotation preventive mechanism (2) is launched schematic representation, and the imaginary axis of corresponding fixed point actuating mechanism (2) launches schematic representation to the series of the part of projected outline, wherein, (a) corresponding to chimeric operating mode, (b) set up moment of the relation of stopping corresponding to countercheck mechanism, (c) corresponding to the moment of rotation preventive mechanism end spline, (d) begin to activate the moment that stops chimeric mechanism corresponding to the fixed point actuating mechanism; Arrow is represented the sense of rotation of shift(ing) ring relative fixed ring among the figure, and dotted line is represented circumferentially fixing relation.

Wherein, sequence table is as follows:

The chimeric mechanism of M1-power transmission 70-shift(ing) ring, 100-mobile eseparation ring

The chimeric mechanism 72 of M2-separation-mobile power transmission tooth 102-move and separate tooth

M3-stop chimeric mechanism 74-power transmission flank 104-move and separate guide surface

M4-rotation preventive mechanism 78-spline tooth

M5-releasing mechanism 80-chimeric movement locus line 110-ratchet

M6-fixed point actuating mechanism 86-pressing spring 112-seat groove

88-spring seat, 114-Returnning spring

50-retaining ring, 115-spring eye

52-fixing force transfer tooth, 90-eseparation ring, 116-matrix

54-power transmission flank 92-separation tooth 118-half-cylindrical turning surface

94-separation guide surface, 119-confined planes

130-catch ring, 120-limiting member

131-positioning through hole, 140-spline ring, 122-ratchet

132-blocking teeth, 142-baffle teeth, 123-Surface of action

133-guide surface, 143-annular matrix outer surface, 124-corpus unguis

134-spacing double wedge 144-radial hole

135-spacing end face 145-end face 150-release ring

136-stop teeth groove 146-breach 151-radial hole

137-location teeth groove 148-location double wedge 152-mobile guide tooth

138-location double wedge 149-shoulder block 153-end face

139-peripheral groove, 154-guide surface

160-mobile catch ring 156-breach

200-rotational axis 162-mobile blocking teeth 158-positioning groove

202-gear teeth 164-mobile blocking teeth guide surface

206-the first rotary member, 166-teeth groove, 230-spline reference rings

208-locating stud, 168-teeth groove inlet, 232-benchmark baffle teeth

210-support shell, 234-spline teeth groove

212-spring, 240-the second rotary member

214-annular groove, 242-spline tooth 252-guiding tooth

216-bearing, 244-damping spring, 254-guide surface

218-screw, 246-supporting base, 256-teeth groove

220-snap ring, 260-precompression conduit

266-entrance, 262-compressing section

Embodiment

Necessary explanation: in the text of this specification and the institute's drawings attached, same or analogous member and characteristic portion all adopt identical label symbol, and only give necessary explanation when they occur for the first time.Equally, the also working mechanism of the identical or similar means of not repeat specification.In addition, for difference is arranged in two identical members or characteristic portion on symmetry or the corresponding position, this specification has added alphabetical a or b in its numbering back, and in the general reference explanation or when need not to distinguish, will not make to distinguish also not additional letter a or b.

Embodiment one: the axle of simple structure-shaft drive formula mono-directional overrun clutch C1

Referring to Fig. 1～4, free wheel device C1 comprises one by the chimeric M1 of mechanism of power transmission and separate the stitching type jaw free wheel device of the routine that the chimeric M2 of mechanism forms, it mainly comprises and the fixing respectively eseparation ring 90 and second rotary member 240 of first, second rotating shaft (not shown), with circumferentially fixing mobile eseparation ring 100 and spring 86 and the spring seat 88 of the latter.In addition, for guaranteeing chimeric accurate unanimity, significantly reduce no-load torque, free wheel device C1 also is furnished with and comprises the chimeric M3 of mechanism of stopping of catch ring 130 and mobile catch ring 160, comprise the releasing mechanism M5 that discharges ring 150 and second rotary member 240, comprise catch ring 130 and the rotation preventive mechanism M4 of eseparation ring 90 and the actuating mechanism M6 that fixes a point.

Wherein, separate the chimeric M2 of mechanism and comprise axially relative to chimeric eseparation ring 90 and move eseparation ring 100, for this mechanism provides the pressing spring 86 of elasticity pressure force, spring seat 88 and it is limited to snap ring 220 on second rotary member 240.Mobile eseparation ring 100 is sleeved on second rotary member 240, and the spline tooth 78 and the spline tooth on latter's external cylindrical surface 242 of its endoporus form spline pairs with transmitting torque.Best, shift(ing) ring 70 and mobile eseparation ring 100 coenosarcs, retaining ring 50 and eseparation ring 90 coenosarcs.Therefore, mobile separation tooth 102 and mobile power transmission tooth 72 circumferentially are distributed on the end face of mobile eseparation ring 100 with the form of coenosarc, and its cross section indention has to move and separates guide surface 104 and power transmission flank 74, referring to Fig. 2.Fully accordingly, separation tooth 92 and power transmission tooth 52 circumferentially are distributed on the end face of eseparation ring 90 with the form of coenosarc, have the guide surface 94 of separation and power transmission flank 54, referring to Fig. 4.Obviously, the chimeric M1 of mechanism of power transmission with separate the chimeric M2 of mechanism coexistence one, two mechanisms correspond respectively to different circumference sense of rotation, but circumferentially interlock, and, separate tooth 92,102 and equate fully with the shape and the number of teeth of power transmission tooth 52,72 4, and circumferentially uniform (number of teeth is 18 in the present embodiment).

Stop that the chimeric M3 of mechanism comprises axially relative to chimeric catch ring 130 and moves catch ring 160.Uniform three blocking teeths 132 and teeth groove 136 on the right side of catch ring 130, the spacing double wedge 134 of circumferential uniform three radial modes on the same shaft section of its inner hole surface, these three double wedges are entrenched in respectively that (double wedge 134 circumferentially staggers with supporting base 246 during installation between the catch ring supporting base 246 and spline tooth 242 of three annulars on second rotary member, 240 external cylindrical surface relevant positions, circumferentially rotate again after axially putting in place and get final product), referring to Fig. 3,4.Mobile catch ring 160 coenosarcs side in the ring of mobile eseparation ring 100, three circumferential uniform mobile blocking teeths 162 are served as by the radially extending body of the mobile separation tooth 102 of three correspondences, referring to Fig. 2.Here, three, uniform and utilize the arrangement of extending body radially all optional, just to the convenience of making.

Rotation preventive mechanism M4 is by spline ring 140 and spline reference rings 230 axial chimeric forming, referring to Fig. 1,3.Spline reference rings 230 coenosarcs side in the ring of eseparation ring 90, the circumferentially uniform benchmark baffle teeth 232/ spline teeth groove 234 equal on it with separating tooth 92 numbers of teeth.Spline ring 140 and catch ring 130 coenosarcs, circumferential uniform six baffle teeths 142 on its left end face.Obviously, the number of teeth of only requiring a side baffle teeth among the rotation preventive mechanism M4 equates with the number of teeth of separating tooth 92 best, the opposing party's the number of teeth desirable one is to the arbitrary integer between this number of teeth, as long as its baffle teeth is formed on the circumference equal diversion point with this number of teeth institute five equilibrium.Obviously, rotation preventive mechanism M4 can also be such as the chimeric mechanism of cotter way formula, or electronic, mechanism such as surge.

Referring to Fig. 1,3,4, releasing mechanism M5 is one and relatively rotates to activating motive rotation guide mechanism with the circumference between second rotary member 240 and the eseparation ring 90, comprise and being distributed on second rotary member 240 and coexist respectively three guiding teeth 252 of one of three catch ring supporting bases 246, it has guide surface 254, and being distributed on three mobile guide teeth 152 that discharge on the ring 150, it has corresponding guide surface 154.And guide surface 154 and 254 lift angle all are not more than the friction angle of friction pair therebetween.Here, discharge ring 150 and catch ring 130 coenosarcs.Three mobile guide teeth 152 and three spacing double wedge 134 difference coenosarcs.

Fixed point actuating mechanism M6 comprises, be inlaid in pin shape ratchet 110 and spring 114 in the pawl base groove 112 on eseparation ring 90 inner hole surface in circumferential fixing and axial restraint mode, and the ratchet of forming by the unidirectional ratchet 122 that is distributed on spline ring 140 external cylindrical surfaces.Wherein, seat groove 112 also is a radial mode spring eye 115 simultaneously, referring to Fig. 1,3,4.Ratchet 122 with move the number of teeth separate tooth 102 and equate, its Surface of action 123 and power transmission flank 74 have/face identical circumference towards.Same understand easily, fixed point actuating mechanism M6 also can be such as the chimeric mechanism of cotter way formula, or electronic, mechanism such as surge.

Because the elementary process of present embodiment work and the stitching type jaw free wheel device of prior art are identical, and elaborating about latter's structure and working procedure, can consult application number that the applicant proposes and be China of 200710152152.3 in careful patent of invention of the same name, the full content of this patent application is included in the present patent application in the reference mode.So this specification is only done concise and to the point narration to its groundwork process, its structure relevant with self-supporting and working principle then are described in detail.

With reference to Fig. 1,4, be that example describes (otherwise the same) to shift(ing) ring 70 transmitting torques with retaining ring 50.Non-stopping in the operating mode, from the torque of retaining ring 50 through the chimeric M1 of mechanism of power transmission to shift(ing) ring 70 (counter clockwise direction of left apparent time among Fig. 1, corresponding among Fig. 4 (a) from bottom to top), be passed to second rotary member 240 through spline pair again.At this moment, separate the chimeric M2 of mechanism, stop that chimeric M3 of mechanism and rotation preventive mechanism M4 all are in the chimeric status synchronously that catch ring 130 can not freely rotate by relative separation ring 90.Mobile eseparation ring 100 is subjected to the axially support of eseparation ring 90 or catch ring 130, referring to Fig. 4 (a).

After surmounting the rotation beginning, mobile eseparation ring 100 relative separation rings 90 rotate along direction shown in the arrow among Fig. 4 (b), and the rotation guiding type separates the chimeric M2 of mechanism forces mobile eseparation ring 100 to overcome pressure force relative separation ring 90 axial separation of spring 86.Separating the critical moment that the chimeric M2 of mechanism axial separation finishes (separate guide surface 94 with move separate guide surface 104 and disengage), stop and just in time arrive the transition point of setting up the relation that stops by the chimeric M3 of mechanism (the spacing end face 135a of catch ring 130 is pressed on the supporting base 246, mobile blocking teeth 162 begins top contact with blocking teeth 132), releasing mechanism M5 just in time arrives the starting point (guide surface 254 of guiding tooth 252 begins to contact with the guide surface 154 of mobile guide tooth 152) of the engomphosis relation that begins to remove rotation preventive mechanism M4.At this moment, the spline relation is not disengaged, and catch ring 130 relative separation rings 90 are so circumferentially static, still can not follow mobile catch ring 160 unitary rotation.Therefore, along with the continuation that surmounts rotation, gear tip clearance stops that to the top relation is set up, releasing mechanism M5 is able to axially promote synchronously catch ring 130 by guide surface 254 and 154 s' guiding relation, and then axially go up and continue to promote mobile eseparation ring 100, cause 90 of itself and eseparation rings to disengage (separate between the tooth top of tooth 92 and 102 and the gap occurs), till baffle teeth 142 axially shifts out spline teeth groove 234 and removes the engomphosis relation of rotation preventive mechanism M4, referring to Fig. 4 (c).

Above-mentioned explanation is equivalent to, relatively move eseparation ring 100 of eseparation ring 90 rotates (in Fig. 4 (a) and (b) from top to bottom), when axially expelling the latter, on one side order about catch ring 130 axial space that the circumferential mobile eseparation ring 100 of wedging vacates of taking advantage of a situation by rotation preventive mechanism M4, realize the self-supporting of mobile eseparation ring 100, axially expel spline ring 140 by rotating guiding type releasing mechanism M5 on one side, releasing unitary rotation relation is followed the freedom of mobile catch ring 160 unitary rotation to recover catch ring 130.

Thereafter, axially the guide surface 154 and 254 to top contact makes releasing mechanism M5 be in the friction self-locking state, clutch C1 enters and stops/surmount operating mode, catch ring 130 is in company with relative separation ring 90 rotations integratedly of mobile catch ring 160, the friction that baffle teeth 142 relative datum baffle teeths 232 are made zero contact-type is trackslipped, and ratchet 110 surmounts on the back of tooth of ratchet 122 and trackslips or contactless idle running.

Obviously, releasing mechanism M5 axially promotes the distance of catch ring 130, and in other words, the axial chimeric degree of depth of rotation preventive mechanism M4 is separated tip clearance Δ final between tooth 92 and 102 exactly.

After surpassing in reverse rotation beginning more, spring 114 forces ratchet 110 to run into first ratchet 122 with it and meshes, to stop the rotation of catch ring 130 relative separation rings 90, promptly, fixed point actuating mechanism M6 begins to activate and stops that the chimeric M3 of mechanism, blocking teeth 132 blocking teeth 162 that begins to relatively move rotates.At this moment, the edge week of baffle teeth 142 is upwards just in time aimed at the boundary point R of spline teeth groove 234, be in and be about to lose in the transition point of axial embedding chance wherein, the highest edge of mobile power transmission flank 74 then just in time is in the initial point A of its chimeric movement locus line 80, referring to Fig. 4 (d).Next, along with releasing mechanism M5 removes its axial lifting to catch ring 130 and baffle teeth 142, rotation preventive mechanism M4 is chimeric once more.When the tooth top of mobile blocking teeth 162 slips away the tooth top of blocking teeth 132, the highest edge of mobile power transmission flank 74 arrives the break B of its chimeric movement locus line 80, C reach home rapidly to finish the chimeric M1 of mechanism of power transmission and to separate the chimeric fully of the chimeric M2 of mechanism subsequently under 86 effects of pressing spring, and free wheel device C1 returns to the initial non-operating mode that stops.

Here, circumferential distance/angle that the B point of chimeric movement locus line 80 is ordered to C, relevant with factors such as the quality of the elasticity pressure force that surpasses in reverse the speed of rotating more, pressing spring 86, mobile eseparation ring 100 and mobile surface friction drag, be easy to obtain its extreme value by designing and calculating.And according to this extreme value, definite terminal point C, and margin of safety, just can directly determine the circumferential position of break B, and further obtain the position that A point and R are ordered, thus realize eliminating not exclusively chimeric, guarantee the goal of the invention of chimeric accuracy, conformity and reliability.Obviously, determine the purpose of the circumferential position of break B, in order to use up the width that separates 92 teeth groove notches of tooth to greatest extent, just use up inlet nargin to greatest extent exactly, reach theoretic complete chimeric probability with extreme value.In addition, also can one-sided translation entrance boundary point R, improve the chimeric reliability of spline in the mode that enlarges spline teeth groove 234 width FR.And make mobile blocking teeth guide surface 164 be parallel to rotational axis 200, obviously help improving and stop chimeric M3 of mechanism and even the chimeric speed that resets of whole free wheel device C1.

It must be noted that, stop in the operating mode, axially support moves the load foundation of eseparation ring 100, application of force foundation with the spring 86 of oppressing mobile eseparation ring 100, serve as by solid memder such as second rotary member 240 (embodiment's four fundamental rules are catch ring 130), and, comprise all middle support member of catch ring 130, spring seat 88 and snap ring 220, all with spring 86 and circumferentially relative static as second rotary member 240 of final supporting member.Promptly, the bang path of the sealing of whole elasticity pressure force all be positioned at this solid memder be carrier mutually between circumferential static mobile eseparation ring assembly, oneself have an effect and oneself bear, and any member outside this assembly, this is the implication place of " self-supporting " in the utility model.Depend in this and the prior art with this assembly and exist its support modes such as the so chimeric object ring of eseparation ring 90 of the relation that relatively rotates that the difference of matter is arranged, unloaded wearing and tearing are thoroughly eliminated in order and frictional resistance moment becomes very simple and easy.Especially, when chimeric status/non-also stops in the operating mode when being supported catch ring 130 and moved eseparation ring 100 with rigid support by supporting base 246, more because of not having fourth point to concern, and become full operating mode or permanent self-supporting, referring to Fig. 1,4 with eseparation ring 90.

As seen, the chimeric possibility of axial component has thoroughly been eliminated through accurate, consistent, fixing and reliable in the chimeric road of present embodiment, and the tooth root of the power transmission tooth 52,72 that contracts in need not had both reduced its technology difficulty and fabricating cost, promoted its bearing capacity and reliability again.In addition, substantially mechanical wear relevant and unloaded drag torque have been eliminated with the elasticity pressure force, prolonged the working life of associated components and even whole clutch C1, make all applications that on transmission capacity and working speed, not only are common to prior art of clutch C1, the application that comprises the SSS clutch, and more enlarged its application and scope.

Be to be noted that the utility model does not give special qualification to the circle distribution and the quantity of relevant tooth, can have the integral multiple relation each other fully.But it must be emphasized that, power transmission tooth 52,72, separate tooth 92,102, baffle teeth 142,232, and at least one side in 110 4 groups of the ratchets 122, ratchet, its quantity should equal same natural number best respectively, and is arranged on the circumference equal diversion point by this natural number institute five equilibrium, as long as and the opposing party separately is arranged on the circumference equal diversion point by this natural number institute five equilibrium, and do not require that sufficient number arranges.Such as, this natural number is 18 in the present embodiment, and the equal less than 18 of the quantity of baffle teeth 142 and ratchet 110.

Should be noted that, though moving separation tooth 102 and benchmark baffle teeth 232 comes down to be respectively formed on mobile eseparation ring 100 and the spline reference rings 230, but because in mono-directional overrun clutch or unidirectional safety clutch, spline reference rings 230 and eseparation ring 90 or retaining ring 50 coenosarcs, mobile eseparation ring 100 and shift(ing) ring 70 are with the identical mode coenosarc of radial position, so it is not directly perceived that this essence seems.But in double rolling key clutch or bidirectional safe clutch, just seem very directly perceived.When the time comes, mobile eseparation ring 100 at least no longer with shift(ing) ring 70 coordination radially, spline reference rings 230, eseparation ring 90 and retaining ring 50 are independent separately best to be existed.In addition, in safety clutch, spline reference rings 230 is and eseparation ring 90 coenosarcs or unitary rotation; In mono-directional overrun clutch, spline reference rings 230 best with retaining ring 50 coenosarcs or the unitary rotation that are used for transmitting torque; And in double rolling key clutch, though spline reference rings 230 can with retaining ring 50 coenosarcs, the mode that must circumferentially be fixed on a plurality of circumferential positions with self-existent form relative fixed ring 50 best, and with latter's unitary rotation.Simultaneously, in free wheel device, eseparation ring 90 is except can be external with 230 coexistences one of retaining ring 50 or spline reference rings, also can with catch ring 130 coexistence one.About above-mentioned explanation, the applicant's Chinese patent application 200820119500.7 has provided detailed example and explanation, and the full text of this patent application is cited at this, no longer describes in detail.

Although according to the foregoing description of the present utility model is free wheel device, the utility model Applicable scope is not limited to this.For example, make free wheel device C1 rotate on the opposite direction of its operative orientation, present embodiment is exactly a unidirectional castellated safety clutch C1.Particularly removing snap ring 220, forming outside thread at annular groove 214 positions, replacing spring seat 88 with adjusting nut and come after the axially support spring 86, present embodiment will become the unidirectional castellated safety clutch of a standard.The size of Regulation spring 86 elasticity pressure forces, the just CLV ceiling limit value of its transmitting torque of can regulate.And, when power transmission flank 54,74 is made respectively and separates guide surface 94 or move when separating guide surface 104 and having similar or identical tilt angle, more can obtain the simple structure form of the present utility model (this flank can use as the separation guide surface on another circumferencial direction) that the chimeric M1 of mechanism of power transmission has not in fact existed in two-way castellated safety clutch.

Embodiment two: the wheel-shaft drive formula mono-directional overrun clutch C2 with packing forms one

Present embodiment is the improvement to embodiment one, will surmount rotation formula in the rotation preventive mechanism M4 in the rotation and be trackslipped by zero contact and be modified into contactless rotation, with thorough elimination mechanical wear and the unloaded drag torque relevant with the elasticity pressure force; Simultaneously, be more convenient for increasing and controlling the chimeric degree of depth (to adapt to the application of strengthening the elasticity pressure force such as needs such as safety clutches) of rotation preventive mechanism M4, releasing mechanism M5 also can need not self-locking, helps designing, make and the raising in service behaviour, reliability and life-span.

Referring to Fig. 5, in appearance, the eseparation ring that is formed with the gear teeth 202 90 and the support shell 210 of present embodiment are tightened to one by screw 218, and the two is fixed on second rotary member 240 by two bearings 216, to constitute the packing forms one of wheel-shaft drive formula.In essence, the real variation of present embodiment is, the catch ring 130 of coenosarc is split into two independent components circumferentially fixing but that axial elasticity links to each other with spline ring 140 among the embodiment one, promptly, axial tension type elasticity assemblying body causes the 130 axially movable zero hours of catch ring so that the spline ring lags behind releasing mechanism M5 the 140 axially movable zero hours.

Referring to Fig. 5,6, catch ring 130 is still with form among the embodiment one and release ring 150 coenosarcs, the interior ring side of its left side is evenly equipped with three face type circular orientation double wedges 138, it is chimeric respectively that three corresponding footpath tropisms locate double wedge on this double wedge 138 and the spline ring 140 endoporus cylndrical surface, with circumferential constant resistance ring 130 and spline ring 140.Baffle teeth 142 and ratchet 122 all are formed on the external cylindrical surface of spline ring 140.In addition, be formed on to peripheral groove 139 penetrabilities on the inner cylindrical surface that both sides locate double wedge, the open circles ring-type damping spring 244 of inserting wherein connects into an axial tension type elasticity assemblying body with these two rings.For making two rings can the certain distance of resilient separation, the two ends that are positioned at the peripheral groove 139 of location double wedge 138 inner ring surfaces all form the one-sided bell mouth shape of its tooth top of deflection.Like this, under external force, catch ring 130 and spline ring 140 flexible damping springs 244 and be separated from each other certain distance δ axially, after external force is removed, elastic recovery again.

Except that above-mentioned difference, the structure of present embodiment and groundwork process or mechanism are same as embodiment one fully, and no longer repeat specification only illustrates the fine difference that is brought by above-mentioned unique essential improvement.

Refer again to Fig. 4～5, surmount and rotate initially, the surface friction drag of giving birth to because of spline between baffle teeth 142 and benchmark baffle teeth 232 flanks is enough under the specially arrangement of crooked damping spring 244, releasing mechanism M5 axially goes up the initial stage that promotes catch ring 130, can not promote spline ring 140 synchronously, but flexural spring 244 and axial tension two rings.Only fully be bent to the horn mouth of using up peripheral groove 139 at damping spring 244, begin to be subjected to after the above-mentioned two ring rigidity shearings, after just two annulate shafts upwards were stretched and separate the δ distance, catch ring 130 just can drive spline ring 140 axial same moved further by damping spring 244.Spline finishes moment, baffle teeth 142 is zero with benchmark baffle teeth 232 gear tip clearances distance, and along with the disappearance of surface friction drag between the two flank, the recuperability of damping spring 244 can be eliminated the Separation δ of two interannulars immediately, but, can not move catch ring 130 in view of being subjected to the restriction of its supporting base 246, therefore, the recuperability of damping spring 244 must cause spline ring 140 to continue to move a segment distance δ.That is, surmount in the rotation, baffle teeth 142 and 232 gear tip clearance are apart from be δ greater than zero, and rotation preventive mechanism M4 inside no longer is in zero and contacts the state that trackslips.So mechanical wear and the unloaded drag torque relevant with the elasticity pressure force are able to thorough elimination.

Embodiment three: the axle one shaft drive formula mono-directional overrun clutch C3 that does not have encapsulation

Present embodiment also is the improvement to embodiment one, compares with embodiment two, and it is identical with effect but improve structure and be not quite similar that it improves thought.In the present embodiment, independently catch ring 130 encircles 150 with the spline ring 140 and the release of coenosarc, forms relation circumferentially fixing but the axial elasticity connection.In addition, also pin shape ratchet 110 has been made into conventional swing shape ratchet 110, just the axis of its rotation/swing is not by locating stud but is determined by locating slot.

Referring to Fig. 7～9,11, rotation preventive mechanism M4 and releasing mechanism M5 in fact still have constituent element and the citation form that is equal to embodiment one fully, just in order to obtain embodiment two effect, independent member is a catch ring 130 and no longer be spline ring 140 among the embodiment two separately.Wherein, the ratchet 122 of single direction ratchet still circumferentially is distributed on the external cylindrical surface of catch ring 130 left ends, and a corresponding side of blocking teeth 132 is formed with guide surface 133.The spline ring is evenly equipped with baffle teeth 142 on 140 left sides, and three location double wedges 148 on its right side are chimeric respectively with three radial mode location double wedges 138 in catch ring 130 endoporus, cause two rings circumferentially fixing.Three guiding teeth 252 are still served as by three catch ring supporting bases 246 that are formed on second rotary member 240 respectively, corresponding radial mode mobile guide tooth 152 then is formed on the inner headed face of location double wedge 148 of spline ring 140, and bidentate has relative guide surface 154,254 respectively.Here, the internal diameter of location double wedge 148 is greater than the external diameter of catch ring supporting base 246.

In addition, discharge in the radial hole 151 on ring 150 inner cylindrical surfaces and be embedded with linear damping spring 244, the internal diameter end of this spring embeds in the precompression conduit 260 on second rotary member, 240 external cylindrical surfaces (during installation slidably, earlier catch ring 130 is axially gone into the position with aforementioned manner, again location double wedge 148 on the spline ring 140 and spring 244 are aimed at the location teeth groove 137 of catch ring 130 and the entrance 266 of conduit 260 respectively, axially push put in place after again one circumferentially rotate get final product).When second rotary member 240 rotated relative to release ring 150, after the axial distance of the compressing section 262 bendings/compression damping spring 244 of conduit 260 reached δ, guide surface 254 of its guiding tooth 252 just began the rigidity contact and discharges the guide surface 154 that encircles on 150.And best, guide surface 154,254 and compressing section 262 have identical lift angle.As described in embodiment four, this lift angle can be no longer by ad hoc requirement.Like this, as described in embodiment two, separating under torque and the surface friction drag effect, second rotary member 240 and spline ring 140 can axially be gone up bending/compression damping spring 244 and reach certain distance δ, and after the separation torque removes, this resiliently deformable will disappear automatically.

As seen, at the work initial stage of releasing mechanism M5, damping spring 244 also has the axial elasticity pre compressed magnitude δ of a foregoing key.Therefore, present embodiment has the spline effect that is same as embodiment two fully equally: the clearance type of realizing rotation preventive mechanism M4 inside separates, and thoroughly eliminates mechanical wear and the unloaded drag torque relevant with pressing spring 86.All fours among its working procedure or mechanism and the embodiment two, no longer repeat specification is in this.

In addition, slightly different among the ratchet 110 among the present embodiment fixed point actuating mechanism M6 and the embodiment one.Comparison diagram 7,10, present embodiment has made pin shape ratchet 110 into conventional swing type ratchet 110.Wherein, ratchet 110 is inlaid in the seat groove 112 that is arranged on the eseparation ring 90 endoporus cylndrical surface, peripheral groove on the eseparation ring 90 endoporus cylndrical surface runs through the semi-cylindrical recesses part of a groove 112, and the limiting member 120 that is inlaid in open elastic ring shape wherein limits ratchet 110 in the present groove 112 swingably by confined planes 119a, 119b.

Can comprise corpus unguis 124 and matrix 116 two-part that are formed with half-cylindrical turning surface 118 around the moving ratchet 110 of axis of rotation string pendulum.Half-cylindrical turning surface 118 is used for determining the rotation axis and bears peripheral force that confined planes 119a, the 119b in the front of matrix 116 fits with the limiting member 120 of ring-type respectively on two limit positions of ratchet 110 rotations.Identical with embodiment four, seat groove 112 has the groove shapes (comprising semi-cylindrical turning surface) corresponding to the back of ratchet 110, and the bottom portion of groove that holds corpus unguis 124 in the groove is formed with the spring eye 115 that is roughly radially, wherein is furnished with pawl restoring spring 114.

Except that above-mentioned explanation, the structure of present embodiment and groundwork process or mechanism almost completely are same as embodiment one, no longer give repeat specification.Difference is, separates the axial clearance Δ that separates among the chimeric M2 of mechanism between the tooth 92 and 102, is to rely on to stop that the chimeric M3 of mechanism separates (being same as embodiment four) that lifting realizes by the relay-type of 162 pairs of mobile eseparation rings 100 of mobile blocking teeth.That is, after separating tooth 92 and 102 separate end, blocking teeth 132,162 moves eseparation ring 100 by the rotation leading role relay lifting of the two corresponding guide surface 133,164, until the axial clearance Δ that reaches when the top stopped that relation is set up.After this, the process of releasing rotation preventive mechanism M4 just just begins.

Embodiment four: the wheel-shaft drive formula mono-directional overrun clutch C4 with packing forms two

With reference to Fig. 5 and Figure 12, free wheel device C4 is the distortion to free wheel device C2, its directly upwards turned up mobile eseparation ring 100 and second rotary member 240 of the latter, increased first rotary member 206 with eseparation ring 90 rigidity one, still comprise above-mentioned six mechanisms generally, but a little difference is arranged on the structure.

Wherein, the structure of the chimeric M1 of mechanism of power transmission, the chimeric M2 of mechanism of separation is same as embodiment one fully.

Stop that three mobile blocking teeths 162 among the chimeric M3 of mechanism are distributed on the inner hole surface of mobile eseparation ring 100, it has guide surface 164, teeth groove 166 and teeth groove inlet 168; Three blocking teeths 132 in this mechanism are distributed on the external cylindrical surface of catch ring 130, are positioned at all the time in the teeth groove inlet 168 on axially, and it correspondingly has guide surface 133, referring to Figure 12～14.Pressing spring 86 is installed between the spacing double wedge 134a of radial mode of mobile eseparation ring 100 and catch ring 130 1 ends.Stop in the operating mode that mobile eseparation ring 100, catch ring 130 and spring 86 3 members constitute a static fully each other independent integral body, both serve as the other side's supporting base mutually the back.For axial restraint should integral body to avoid collision, best, locating stud 208 in support shell 210 respective radial holes is fixedly connected, form the chimeric mechanism of pin-and-hole formula with corresponding circumferentially long and narrow positioning through hole 131 on the catch ring 130, when causing catch ring 130 to be fitted on the support shell 210 all the time best, also allow to relatively rotate certain angle between the two, not hinder the foundation of the relation of stopping.In fact, the mobile catch ring 160 in the present embodiment also can be shaped separately, is fixed in the endoporus of mobile eseparation ring 100 in modes such as welding, riveted joint, scyewed joint, interference fit or the common shaft shoulder stop then.

Than embodiment two, three further, the catch ring 130 in the present embodiment, spline ring 140 and discharge that ring 150 is independent fully each other to be existed, but ratchet 122 is formed on the inner hole surface of catch ring 130, referring to Figure 12,14～15.Spline reference rings 230 among the rotation preventive mechanism M4 is by circumferentially fixing with the form and the eseparation ring 90 of first rotary member, 206 coenosarcs, and the benchmark baffle teeth 232 equal with separating tooth 92 numbers of teeth circumferentially is distributed on the shaft shoulder place on this ring external cylindrical surface.Be evenly equipped with baffle teeth 142 radially in six on spline ring 140 inner hole surface, and the location double wedge 148 of three outer radials identical with the annular matrix external diameter of catch ring 130, it is chimeric respectively with three location double wedges 138 that are formed on catch ring 130 end faces, circumferentially fix spline ring 140 and catch ring 130, and by the former annular matrix outer surface 143 cooperates with the latter's inner hole surface with realize two encircle radially fix.The wavy spring 212 of opening is installed to by ratchet one end cover between the spacing double wedge 134b and spline ring 140 of catch ring 130, thinks that rotation preventive mechanism M4 provides pressure force.

Referring to Figure 12,14～16, releasing mechanism M5 is one and relatively rotates to activating motive rotation guide mechanism with the circumference between mobile eseparation ring 100 and the eseparation ring 90, comprise and be distributed on three guiding teeth 252 on the hole end surface in the mobile eseparation ring 100, it has guide surface 254 and teeth groove 256, and being distributed on three mobile guide teeth 152 that discharge on ring 150 end faces, it has guide surface 154.Discharge ring 150 and dodged the mode of blocking teeth 132 with breach 156 on its inner hole surface, by the ratchet end suit and be radially positioned in catch ring 130 and the location double wedge 148 of spline ring 140 outside, shoulder block 149 wide on positioning groove 158 on its inner hole surface and the location double wedge 148 is chimeric, when causing three rings circumferentially fixing each other, also cause the circumferentially fixing of mobile guide tooth 152 and baffle teeth 142 naturally.Linear three damping springs 244 are inlaid in the radial hole 151,144 simultaneously from outside diameter, will discharge ring 150 and spline ring 140 and be linked to be a compression-type elasticity assemblying body on axially.At this moment, its right end face 153 of two rings is concordant with 145, discharges between the interior radially projection and shoulder block 149 of the guiding tooth 152 that encircles 150 left sides, has one greater than zero axial spacing δ.Optimally, the position of corresponding radial hole 151 is formed with breach 146 on the shoulder block 149, to strengthen the radial spacing of radial hole 151,144, guarantees that the axial deflection of damping spring 244 reaches δ.Like this, just can be same as embodiment two, three spline effect fully, thoroughly be eliminated mechanical wear and the unloaded drag torque relevant with the elasticity pressure force.

M6 is identical with previous embodiment essence for the fixed point actuating mechanism, referring to Figure 12,17.Can comprise corpus unguis 124 and matrix 116 two-part that are formed with half-cylindrical turning surface 118 around the ratchet 110 of axis of rotation swing.Half-cylindrical turning surface 118 is used for determining the rotation axis and bearing peripheral force that the front of matrix 116 is confined planes 119a, 119b, fits with the inner cylindrical surface of the limiting member 120 of ring-type on two limit positions of ratchet 110 rotations respectively.Limiting member 120 radially is limited in ratchet 110 in its groove 112, this groove 112 is formed on the external cylindrical surface with first rotary member 206 of eseparation ring 90 rigidity one, has groove shapes corresponding to the back of ratchet 110, the bottom portion of groove that holds corpus unguis 124 in the groove is formed with the spring eye 115 that is roughly radially, is furnished with Returnning spring 114 in the hole.In fact, confined planes 119 can be formed in the cylindrical hole face on the matrix 116, and limiting member 120 can be a straight pin, to have the pin-and-hole formula positioning form of common swing ratchet.

The working procedure of present embodiment almost completely is same as previous embodiment.Difference is, separates the axial clearance Δ that separates tooth 92 and 102 among the chimeric M2 of mechanism, is to rely on to stop that the chimeric M3 of mechanism separates the lifting realization by the relay-type of 162 pairs of mobile eseparation rings 100 of mobile blocking teeth.That is, after separating tooth 92 and 102 separate end, blocking teeth 132,162 moves eseparation ring 100 by the rotation leading role relay lifting of the two corresponding guide surface 133,164, until the axial clearance Δ that reaches when the top stopped that relation is set up.Referring to Figure 12,18.

Continuation surmounts in the separation process referring to Figure 12,18, and mobile eseparation ring 100 relative separation rings 90, catch ring 130 and release ring 150 rotate, and axially shift to the latter.Correspondingly, mobile guide tooth 152 among the releasing mechanism M5 enters in the teeth groove 256, after the relation of stopping is set up, along with the continuation that surmounts rotation, mobile guide tooth 152 contacts with guiding tooth 252, and the leading role that the two guide surface is 154,254 causes release ring 150 to move to right.The surface friction drag of giving birth to because of spline between baffle teeth 142 and benchmark baffle teeth 232 flanks is enough under the specially arrangement of crooked damping spring 244, mobile eseparation ring 100 promotes to discharge ring 150 resistances that overcome spring 212 earlier and moves to right separately, 140 on spline ring is axial static, axial deflection until damping spring 244 reaches δ, discharges guiding tooth 152 on the ring 150 with till shoulder block 149 rigidity of spline ring 140 contact.Thereafter, by the contact of this rigidity, spline ring 140 is forced to begin to move axially, and causes baffle teeth 142 and shift out spline teeth groove 234, and the spline engomphosis relation finishes, and catch ring 130 freely rotates with mobile eseparation ring 100 one.Simultaneously, under the effect of damping spring 244 elastic recovering forces, spline ring 140 continues to move to right one apart from δ, has realized that equally the clearance type of rotation preventive mechanism M4 inside separates, and has thoroughly eliminated mechanical wear and the unloaded drag torque relevant with pressing spring 86 too.

Should be noted that rotation preventive mechanism M4 provides pressure force separately by spring 212.In the entire work process, catch ring 130 is axial restraint best, non-ly stop that support shell 210 is served as spring seat 88 in the operating mode to adapt to, it is pressed on the latter by spring 86, and stop in the operating mode that it serves as spring seat 88 and in person as the final supporting member of spring 86 and mobile eseparation ring 100 2 members, and the work characteristics of carrying this two members one axial float.In addition, the elastic force of spring 86 is big than the remarkable of spring 212 generally, therefore, the no longer essential self-locking of the rubbing contact among the releasing mechanism M5 between the guide surface 154,254, that is, both lift angles can be no longer by ad hoc requirement.

Significantly, the damping spring 244 that discharges between ring 150 and the spline ring 140 also can be by arranging such as circumferential or axial manner, as long as both sides' axial spacing can have an elasticity variable quantity δ.Nature, axial arranged spring 244 should have the corresponding form such as cylindrical screw, perhaps, itself is exactly an elastic caoutchouc, elastomeric plastics etc.Certainly, discharge ring 150 and also can become a simple ring with spline ring 140 rigidity one, cost is that the friction that occurs zero contact-type among the rotation preventive mechanism M4 is once more trackslipped.

Also it should be noted that, for improving operating life and reliability according to axial auto-controlled clutch of the present utility model, reduce its mechanical wear and unloaded resisting moment, can in fixed point actuating mechanism M6, arrange the ratchet retaining mechanism, perhaps with magnetive attraction elasticity of substitution masterpiece ratchet reposition force etc.The China of the guided jaw overrunning clutch by name that related description can propose referring to the applicant is at careful patent application 200810161306.X, 200820119499.8.The full text of these two patent applications is cited at this, no longer describes in detail.

In addition, thought of the present utility model also can be applicable to tooth embedding double rolling key clutch, glider, controlled coupling, and in the chimeric tooth embedding no-spin lockup of the fixed point that forms by two axial duplexs of tooth embedding double rolling key clutch, specify the Chinese patent application 200820119500.7 of the self-supporting stitching type jaw free wheel device by name that can consult the applicant's proposition, the full text of this application is cited at this, no longer describes in detail.

The foregoing description of the present utility model is jaw overrunning clutch, but understandablely be, according to thought spirit of the present utility model, the Chinese patent application 200710152153.8 of REFERENCE TO RELATED people's Zero impacting jaw universal safety clutch by name again, the Chinese patent application 200710152154.2 of Zero-impact spring steel ball safety clutch by name, the Chinese patent application 200710152155.7 of basic mode jaw self locking speed differential gear by name, the design of the Chinese patent application 200710152151.9 of the separating retention mechanism of axial auto-controlled clutch by name, and other known technology, technology personage in related domain need not through performing creative labour, just can design the unidirectional or two-way corresponding safety clutch and the various embodiments of the self-supporting separation retaining mechanism of other axial auto-controlled clutch.Therefore, this specification is no longer specifically given an example and is described in detail, only with above-mentioned four parts of quoting in full at this in careful patent application.

Industrial usability

The utility model can directly apply in the axial auto-controlled clutch in nearly all mechanical transmission fields, comprising: castellated free wheel device, castellated safety clutch, spring steel ball safety clutch, jaw self-locking differential mechanism or the like, and almost it doesn't matter with working speed.

Below only be description and the diagram that the utility model gives at its limited embodiment, has particularity to a certain degree, but it should be understood that, mentioned embodiment is used for describing, its various variations, the layout that is equal to, exchanges and change structure or each member all will be considered to not be separated from the spirit and scope that the utility model is conceived.

Claims (10)

1. the self-supporting separation retaining mechanism of an axial auto-controlled clutch comprises:

Separate chimeric mechanism, its have around same rotational axis rotate can be axially chimeric eseparation ring and mobile eseparation ring, but with described mobile eseparation ring not only can moving axially but also joining second rotary member of form of transmitting torque, and spring and spring seat; The chimeric mechanism of described separation rotates guide mechanism, and the rotation that surmounts that it utilizes between described mobile eseparation ring and the described eseparation ring causes described mobile eseparation ring axially away from described eseparation ring, to remove the axially chimeric of this mechanism self;

Stop chimeric mechanism, it has axially chimeric catch ring and mobile catch ring, all be formed with the blocking teeth that possesses axial barrier functionality on this two ring,, keep the axial separation state of this mechanism in surmounting operating mode, to stop the axially chimeric of the chimeric mechanism of described separation;

It is characterized in that:

Stop in the operating mode that (a) the final supporting member of the described mobile eseparation ring of axially support with the final supporting member of the described spring of axially support, is and the circumferential relative static same member of described mobile eseparation ring, described spring and all middle support member;

(b) also comprise rotation preventive mechanism, it has spline reference rings and spline ring, with from described surmount rotate beginning to described stop chimeric mechanism set up axially stop relation before, cause described catch ring can not follow described mobile catch ring unitary rotation;

(c) also comprise releasing mechanism, it is used to remove the circumferential constraint of described rotation preventive mechanism to described catch ring, with described stop chimeric mechanism set up axially stop relation after, recover the freedom that described catch ring is followed described mobile catch ring unitary rotation;

(d) also comprise at least one ratchet-type fixed point actuating mechanism, it utilizes surpassing in reverse more between described mobile eseparation ring and the described spline reference rings to rotate, when turning to specific circumferential position, the described relatively spline reference rings of described catch ring activates the described chimeric mechanism that stops, to finish stopping operating mode, recover described the chimeric of chimeric mechanism and whole described axial auto-controlled clutch that stop.

2. by the described separating retention mechanism of claim 1, it is characterized in that:

(a) described mobile catch ring and described mobile eseparation ring form as one;

(b) described eseparation ring all is formed with the separation tooth with described mobile eseparation ring two separating of ring on the turning surface;

(c) described rotation preventive mechanism is chimeric mechanism, all is formed with baffle teeth on its described spline reference rings and the described spline ring;

(d) described spline ring and described catch ring are at least circumferentially fixing;

(e) described ratchet-type fixed point actuating mechanism, its ratchet and ratchet are at least circumferentially fixing with in the two one of described eseparation ring and described catch ring respectively.

3. by the described separating retention mechanism of claim 2, it is characterized in that: described spline reference rings can circumferentially be fixed at least one circumferential position by described relatively eseparation ring.

4. by the described separating retention mechanism of claim 1, it is characterized in that:

(a) also comprise the chimeric mechanism of the power transmission that is specifically designed to transmitting torque, it has can be axially chimeric and be formed with the retaining ring and the shift(ing) ring of power transmission tooth respectively;

(b) described shift(ing) ring, described mobile catch ring and described mobile eseparation ring three form as one;

(c) described eseparation ring all is formed with the separation tooth with described mobile eseparation ring two separating of ring on the turning surface;

(d) described rotation preventive mechanism is chimeric mechanism, all is formed with baffle teeth on its described spline reference rings and the described spline ring;

(e) described spline ring and described catch ring are at least circumferentially fixing, and described spline reference rings can circumferentially be fixed at least one circumferential position by described relatively retaining ring;

(f) described ratchet-type fixed point actuating mechanism, its ratchet and ratchet are at least circumferentially fixing with in the two one of described retaining ring and described catch ring respectively.

5. by the described separating retention mechanism of claim 4, it is characterized in that: chimeric mechanism of described separation and the chimeric mechanism of described power transmission are merged into a chimeric mechanism of work, described retaining ring causes described shift(ing) ring unitary rotation along the rotation of a circumferencial direction, rotation along opposite circumferencial direction then causes both sides to relatively rotate, and expel described shift(ing) ring to remove axial engomphosis relation, promptly, described eseparation ring and described retaining ring are merged into a ring, and two flanks of the same chimeric tooth in the chimeric mechanism of described work are respectively the two flanks of described separation tooth and described power transmission tooth.

6. by claim 2,4,5 each described separating retention mechanisms, it is characterized in that: described eseparation ring and described catch ring form a ring, described mobile eseparation ring and described mobile catch ring form a ring, promptly, the chimeric mechanism of described separation and described stop chimeric mechanism be merged into one work chimeric mechanism, described separation tooth is exactly described catch ring, and described mobile separation tooth is exactly described mobile blocking teeth.

7. by each described separating retention mechanism of claim 2～5, it is characterized in that: described eseparation ring and described spline reference rings form a ring.

8. by each described separating retention mechanism of claim 1～5, it is characterized in that:

(a) described same member is described second rotary member;

(b) described catch ring is subjected to the axial restraint and the support of catch ring supporting base, and this supporting base and described spring seat two members are subjected to the unidirectional restriction and the support of described second rotary member at least;

(c) described releasing mechanism is to rotate guide mechanism, and it comprises described second rotary member, and circumferentially fixing with described spline ring and axially on the release ring that links to each other of elasticity at least.

9. by each described separating retention mechanism of claim 1～5, it is characterized in that:

(a) described same member is described catch ring;

(b) the non-end that stops of described catch ring is formed with radial protrusion, and this radial protrusion is inlaid between described spring and the described spring seat;

(c) described releasing mechanism is to rotate guide mechanism, and it comprises described mobile eseparation ring, and circumferentially fixing with described spline ring and axially on the release ring that links to each other of elasticity at least.

10. by each described separating retention mechanism of claim 8～9, it is characterized in that: described release ring and described spline annular become a ring.

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