CN102865340A

CN102865340A - Power transmission system with rear clutch device

Info

Publication number: CN102865340A
Application number: CN2012102307015A
Authority: CN
Inventors: 苏醒扬; 周文智
Original assignee: SunRace Sturmey Archer Inc
Current assignee: SunRace Sturmey Archer Inc
Priority date: 2011-07-05
Filing date: 2012-07-04
Publication date: 2013-01-09
Anticipated expiration: 2032-07-04
Also published as: TW201303181A; TWI444546B; CN102865340B

Abstract

The invention discloses a power transmission system with a rear clutch device, which comprises a power source, a speed changer, a clutch and a clutch transmission set controlled by external force. The transmission is used for directly converting the rotating speed of the power output by the power source and can also comprise a terminal planetary gear train. The clutch is used for determining whether the output of the planetary gear train is available or not. When no external force is introduced, the planetary gear train is in an idle running state without outputting power because of no fulcrum; when external force is input, the clutch and the planetary gear train form a proper fulcrum state, so that the power output by the power source can be output through the planetary gear train of the transmission.

Description

The dynamic transfer system of tool back segment clutch device

Technical field

The present invention relates to a kind of dynamic transfer system of tool clutch device, espespecially a kind of back segment clutch device that utilizes carries out power transmission or supply system that whether external force gets involved the control power output mode of judging to carry out.

Background technique

The device that generally has power generating system, power output system and the dynamic transfer system of speed changer (or claiming gearbox) and clutch disposes usually as shown in Figure 1; Wherein, power (by the output of original power source or the output of other power switching devices) is by the end input of clutch 1, by clutch 1 control whether output power or transfer to after the speed changer 2 that connects, power via speed changer 2 conversion rotating speeds and torsion after, terminally directly exported by it again.

In the prior art, the operation of clutch 1 referral power is generally input and the output of single rotating speed, does not use as speed changing function.Speed changer 2 then is after the power input that receives by clutch 1 control referral, select (manually or automatically) via suitable speed change class, the power (rotating speed, direction and torsion) with suitable demand transfers in follow-up the power utilization system and device (not shown) again.Basically, the operation of clutch 1 does not get involved on the function of outputting power character change.

Foregoing dynamic transfer system is the system of clutch 1 setting position before speed changer 2; And in the prior art, also have system as shown in Figure 2, in this system, the setting position of clutch 1 after speed changer 2, that is be power input directly by after speed changer 2 speed changes, determine output by clutch 1 again.

Power output system of the present invention is similar to the system of tool back segment clutch device shown in Figure 2, but the outgoing route of its power is then fully without clutch 1, its utilization scope is better then to be on the power system (such as electric bicycle, mowing machine even motorized bike etc.) that is used in light load, particularly hides the dynamic transfer system in flower drum shell.

Summary of the invention

Main purpose of the present invention namely is that a kind of dynamic transfer system with back segment clutch device is being provided, its integration is arranged in the wheel hub, can by the external force input control, reach the clutch type power transmission whether power exports (opening or the interruption power transmission).

Another object of the present invention namely is that a kind of dynamic transfer system with back segment clutch device is being provided, its clutch only provides the stressed fulcrum of dynamic transfer system, so, clutch can't be passed through in the path of the power transmission of dynamic transfer system, can alleviate the load of clutch, to meet the demand of light load power system.

Among the present invention, having the dynamic transfer system of back segment clutch device, is to arrange according to a fixing axle center, comprises a power source, a speed changer, a clutch, reaches a clutch transmission group by external force control.

Speed changer is connected with power source, carries out direct transformation of speed in order to the power that power source is exported, and can comprise that again a terminal epicyclic train is terminal as the output of power.This planet train of gearings can comprise again sun gear, a planet carrier, a ring gear that is hubbed on the axle center and is driven by power source and be hubbed on the planet carrier and engagement rotates in a plurality of planetary pinions between sun gear and ring gear.

Clutch sees through clutch transmission group control start by external force, determines to open or interrupt the outgoing route of power source; When the external force input is not arranged, clutch namely is in the out of mesh state of structure slippage with epicyclic train, that is clutch do not provide epicyclic train any stressed fulcrum, causes the planetary pinion (being driven by sun gear) of epicyclic train to be in idling conditions; And when having external force to see through the clutch transmission group to make dynamic clutch, clutch namely is in the state of structure engagement with epicyclic train, make epicyclic train have suitable stressed fulcrum, and then the outgoing route in the source that turns on the power, and epicyclic train can one of them comes outputting power to flower drum shell by planet carrier or ring gear.

When without external force, clutch discord planet carrier and ring gear form the fulcrum relation, and at this moment, the planet carrier of epicyclic train and ring gear namely present idling conditions, cause its power can't export flower drum shell to.And when external force gets involved, clutch namely becomes suitable fulcrum relation with planet carrier and ring gear are capable, therefore, power by sun gear that power source is transferred to, will be according to the turning to of its sun gear, deciding is to see through the planet gear drives ring gear or export via planet carrier both one of them.

In one embodiment of this invention, dynamic transfer system with back segment clutch device can comprise a flower drum shell again, the large section of power source, speed changer, clutch and clutch transmission group is arranged in the flower drum shell, and the flower drum shell ratchet ring of ring gear and planet carrier system with flower drum shell in forms respectively individual other overrunning clutch and be combined.

In one embodiment of this invention, the clutch that has a dynamic transfer system of back segment clutch device can comprise again one in order to the ring gear control cam mechanism of a point operation of control ring gear and a planet carrier control cam mechanism in order to a point operation of controlling planet carrier.

In one embodiment of this invention, have in the clutch of dynamic transfer system of back segment clutch device, it is two interlocks but discrete cam and driven member pair that its ring gear control cam mechanism and planet carrier are controlled cam mechanism.In ring gear control cam mechanism, cam profile is the control chute with the external force start, and driven member then is a fixing fulcrum ratchet.And in planet carrier control cam mechanism, the cam profile of cooperation is the salient point guid arm with the external force start, and driven member then is the flexible salient point of a planet carrier of being located on the planet carrier.

In one embodiment of this invention, it mainly is to be structured in two cams in the same plate body and driven member pair that ring gear control cam mechanism and the planet carrier that has a dynamic transfer system of back segment clutch device controlled cam mechanism.In ring gear control cam mechanism, cam profile is the control chute with the external force start, and driven member then is a fixing fulcrum ratchet; And in planet carrier control cam mechanism, the cam profile of cooperation is the salient point guid arm with the external force start, and driven member then is the flexible salient point of a planet carrier of being located on the planet carrier.

In one embodiment of this invention, clutch with dynamic transfer system of back segment clutch device can comprise again one with the fulcrum fixed base of axle center secure bond, and ring gear control cam mechanism then can comprise the ratchet through hole of the ring gear control cam of being located at fulcrum fixed base one side, a plurality of gilled rings inner edges of being located at the fulcrum fixed base and the fulcrum ratchet that is hubbed at individually in the ratchet through hole and minute is exposed to the gilled rings both sides, can comprise again the control chute that ratchet through hole on a plurality of and the fulcrum fixed base and fulcrum ratchet are corresponding on the ring gear control cam; When the external force intervention makes clutch carry out a fulcrum start, be that driving ring gear control cam carries out the forward rotation, at this moment, the fulcrum ratchet namely slides to one second end at opposite side by a first end of control chute, to impel fulcrum ratchet jack-up also and the formation one-dimensional consolidation state between ring gear, and then make ring gear on single rotation (reverse) direction, can be subject to supporting of fulcrum ratchet and become the fulcrum of epicyclic train operation, sun gear can be exported power on certain single rotation (forward) direction via planetary carrier.And when the external force on the clutch removes, replying torsion spring is that driving ring gear control cam returns back to an original end position, make the downward closure of fulcrum ratchet and no longer be engaged in ring gear, by this, though ring gear be forward when being subject to planetary drive or reverse and all will present idling conditions and power can't be exported by planet carrier.

In one embodiment of this invention, clutch with dynamic transfer system of back segment clutch device can comprise again one with the fulcrum fixed base of axle center secure bond, and planet carrier control cam mechanism can comprise the planet carrier control cam of being located at the nearly planet carrier of fulcrum fixed base, a plurality of being located on the planet carrier and to planet carrier controlled the flexible salient point of planet carrier that cam elasticity protrudes out, and a plurality ofly be arranged on the fulcrum fixed base and the salient point hole clipping of the flexible salient point of corresponding planet carrier, the position that cooperates the flexible salient point of planet carrier, the outer rim of planet carrier control cam protrudes out again and is provided with branched some guid arm, and the configuration of salient point guid arm is outside, side to the fulcrum fixed base, and along stretching a predetermined length on the direction.When clutch is not subjected to external force, the salient point guid arm that replying torsion spring provides a restoring force to drive planet carrier control cam turns under the leading edge of the flexible salient point of corresponding planet, the effect of pulling out that pushes away by the salient point guid arm, the flexible salient point of planet is shoveled out in the salient point hole clipping of grappling, so that planet carrier separates with the fulcrum fixed base, cause there is no on the planet carrier any stressed fulcrum; At this moment, by the power of sun gear input, namely because planet carrier there is no stressed fulcrum so idle running and can't be from the ring gear outputting power.And when external force driving clutch forward, the salient point guid arm of planet carrier control cam at once forward turns to position away from corresponding salient point hole clipping, so that the flexible salient point of planet carrier is located in (engaging) in corresponding salient point hole clipping, in the fixed relation between firm clutch and planet carrier on the one direction, and then make planet carrier on single rotation (reverses) direction, can be subject to the engaging of salient point hole clipping and become the fulcrum that epicyclic train operates; At this moment, turn to the power of upper input by sun gear in certain single (reverse), can see through the output of planet gear drives ring gear forward.

In one embodiment of this invention, the clutch transmission group that has a dynamic transfer system of back segment clutch device can comprise that again driving click seat that a driving component for the external force input, is driven by driving component and directly transfers to the driving component of clutch with power; Wherein, a C shape torsion spring as the two interlock buffering is set again between driving click seat and driving component.

Beneficial effect of the present invention is that the present invention reaches the clutch type power transmission whether power exports (opening or the interruption power transmission) by the external force input control; Clutch only provides the stressed fulcrum of dynamic transfer system simultaneously, so clutch can't be passed through in the path of the power transmission of dynamic transfer system, can alleviate the load of clutch, to meet the demand of light load power system.

Description of drawings

Fig. 1 is a kind of system layout schematic representation of traditional power transmission system;

Fig. 2 is another kind of system layout schematic representation with dynamic transfer system of back segment clutch device;

Fig. 3 is the system layout schematic representation of the dynamic transfer system of the present invention with back segment clutch device;

Fig. 4 is to be the structure configuration schematic diagram of a preferred embodiment of the dynamic transfer system of the present invention with back segment clutch device;

Fig. 5 is the explosive view that part embodiment illustrated in fig. 4 is implemented in detail;

Fig. 6 is the generalized section after Fig. 5 makes up;

Fig. 7 is the three-dimensional enlarged diagram of planet carrier, ring gear and flower drum shell ratchet ring;

Fig. 8 is the three-dimensional exploded view of the clutch primary component of the dynamic transfer system of the present invention with back segment clutch device;

Fig. 9 is the cam-operated schematic representation of planet carrier control of the present invention; And

Figure 10 is the three-dimensional exploded view of the clutch transmission group of the dynamic transfer system of the present invention with back segment clutch device.

Figure 11 is the second preferred embodiment structure configuration schematic diagram of the dynamic transfer system of the present invention with back segment clutch device.

Figure 12 A is the 3rd preferred embodiment structure configuration schematic diagram (closing the power path state) of the dynamic transfer system of the present invention with back segment clutch device.

Figure 12 B is the 3rd preferred embodiment structure configuration schematic diagram (path status turns on the power) of the dynamic transfer system of the present invention with back segment clutch device.

Description of reference numerals: 1-clutch; The 2-speed changer; The 3-epicyclic train; 4-clutch transmission group; The 5-flower drum shell; 7-terminal epicyclic train; The 10-axle center; 11-fulcrum fixed base; 13-ring gear control cam; 15-planet carrier control cam; The 17-planet carrier salient point that stretches; 19-replys torsion spring; The 31-sun gear; The 32-planet carrier; The 33-planetary pinion; The 34-ring gear; The 41-driving component; 43-driving click seat; The 45-driving component; 47-C shape torsion spring; 51-right side ratchet ring; 53-flower drum shell ratchet ring; 55-left side pearl bowl; 57-flower drum shell left cap; 61-front end sun gear; 62-front end planet carrier; 63-front end planetary pinion; 64-front end ring gear; 71-terminal sun gear; 72-terminal planet carrier; 73-terminal planetary pinion; 74-end ring gear; The 100-power source; 101-motor stator support; The 103-motor rotor; The 104-internal rotor; The 105-clutch; The 111-gilled rings; 113-ratchet through hole; 115-salient point hole clipping; 131-drives input component; 133-controls chute; 151-salient point guid arm; The 200-overrunning clutch; 201-fulcrum ratchet; The 202-slide key; 341-ring gear toothed region; 343-ring gear ratchet section; 431-center depression; 433-torsion spring locating point; 451-drives cylinder; 1331-chute first end; 1333-chute the second end; The 1511-sealing end.

Embodiment

See also shown in Figure 3, the system layout schematic representation that has the dynamic transfer system of back segment clutch device for the present invention; With systematic comparison shown in Figure 2, the setting position of the clutch 1 of dynamic transfer system of the present invention is after speed changer 2, that is be that the power input is similarly directly by after speed changer 2 speed changes, determine whether export by clutch 1 again, different persons be one to have the speed changer structure of latter end epicyclic train 3 output at speed changer 2 of the present invention, therefore can result from the output on three diverse locations: the idle running of N state is output state not, the output of (state+) during the sun gear forward, and sun gear output of (state-) when reversing, and clutch 1 of the present invention namely is in order to determine or to control " whether the power of power source can see through epicyclic train output " significantly, of the present invention focusing on: because of the setting of epicyclic train 3 in speed changer 2 terminals, so its clutch 1 device, relative integral power transmission system, it is the intension with " whether the providing of fulcrum by control epicyclic train 3 decides power path to open and close ".

See also shown in Figure 4ly, have the structure configuration schematic diagram of a preferred embodiment of the dynamic transfer system of back segment clutch device for the present invention.This embodiment is implemented on dynamic transfer system of the present invention in the wheel hub of one rotatable wheel, of the present inventionly is used in after a little variation when knowing, can similarly be implemented on according to this in other transmission systems for haveing the knack of this type of operator.

As shown in the figure, in this embodiment, dynamic transfer system of the present invention is implemented in the flower drum shell 5, rotates in order to drive this flower drum shell 5, be to arrange according to a fixing axle center 10, it can comprise that a power source 100, has the speed changer 2 of a terminal epicyclic train 3, a clutch 1.

The power of power source 100 in order to provide flower drum shell to rotate, its enforcement can be electric motor or other similar power provides structure.

Speed changer 2 carries out transformation of speed (being generally deceleration) in order to the power that power source 100 is exported, and includes rotatable some transmission units in it.In present embodiment, these speed changer 2 described these some transmission units comprise that again a terminal epicyclic train 3 is as the output of power.This planet train of gearings 3 is to comprise that one is hubbed on the axle center 10 and by also meshing a plurality of planetary pinions 33 that rotate in 34 of sun gear 31 and ring gears on power source 100 sun gear 31, a planet carrier 32, a ring gear 34 and the planet carrier 32 that is pivoted that directly or indirectly (structure of looking closely speed changer 2 forms decide) drives.As shown in the figure, this planet train of gearings 3 can output power to the outer flower drum shell 5 that covers rotation by ring gear 34 (when sun gear 31 reverses) or planet carrier 32 (when sun gear 31 forward time), and so drives flower drum shell 5 forwards.

Clutch 1, carry out the start of inner body by foot-operated, manual, the electronic or external force of other mode control inputs, whether may be output to flower drum shell 5 or can only dally with the power that determines epicyclic train 3, in other words, clutch 1 is " switch " (Switch) role and without the function of transferring power who plays the part of power output.Among the present invention, clutch 1 is for can successfully carry out the function that it " closes power path ", must make simultaneously the ring gear 34 of epicyclic train 3 all present the state that does not have stressed fulcrum with planet carrier 32, so that are forwards and reverse institute and is transmitted the different dynamic path of coming and all can only cause the lost motion of ring gear 34 and planet carrier 32 and can't drive flower drum shell 5 rotating (namely rotating power can't be exported to flower drum shell 5) by sun gear 31.

Among the present invention, when not having any external force to impose on clutch 1 start, clutch 1 is in the position of " cutting out power path ", and at this moment, the ring gear of epicyclic train 3 34 and planet carrier 32 all are in not and axle center 10 fixed freely rotating (namely dallying) state.Therefore, no matter sun gear 31 is subject to the driving of power source 100 and forward or reverse, and the rotating power of sun gear 31 all can only impel ring gear 34 and planet carrier 32 idle running, and without any rotating power is transferred on the flower drum shell 5.That is when clutch 1 was in the position of " cutting out power path ", epicyclic train 3 also can't produce any power that may be output to flower drum shell 5.

And when external force sees through clutch 1 start with " path turns on the power ", be to make the ring gear 34 of epicyclic train 3 and planet carrier 32 all be in monodirectional locking state fixed in one direction (reverse direction) with axle center 10, other direction (positive veer) slippage.In present embodiment, when external force sees through clutch 1 start with " path turns on the power ", ring gear 34 will be with clutch 1 slippage at the monodirectional locking that will be subject to clutch 1 on the reverse direction of itself and on positive veer can forward; Simultaneously, planet carrier 32 then can forward with clutch 1 slippage on positive veer at the monodirectional locking that also can be subject to clutch 1 on the reverse direction of itself.

By this, when power source 100 drove sun gears 31 forward, ring gear 34 will be subject to clutch 1 locking can't counter-rotating, so but this moment planet carrier 32 be rotated in the forward not to be subject to clutch 1 locking because be.Therefore, clutch 1 can provide to ring gear 34 effect of a stressed fulcrum, make the power that is rotated in the forward of sun gear 31 namely output power to the outer flower drum shell 5 that covers rotation by the planet carrier 32 that is rotated in the forward.And when power source 100 drives sun gears 31 and reverses, so ring gear 34 because be to be rotated in the forward not to be subject to clutch 1 locking, but this moment, planet carrier 32 will be subject to clutch 1 locking and can't counter-rotating.Therefore, clutch 1 can provide to planet carrier 32 effect of a stressed fulcrum, make the counter-rotating power of sun gear 31 namely output power to the outer flower drum shell 5 that covers rotation by the ring gear 34 that is rotated in the forward.

Among the present invention, the pattern that links the one-way clutch of ring gear 34 and

planet carrier

32 and 5 of flower drum shells can adopt a flower drum shell ratchet ring to arrange in pairs or groups, and intermediary that the mechanism of unidirectional ratchet is used as overrunning clutch 200 is combined, 200 pairs of this overrunning clutchs are had the knack of personage's speech of this type of technology, be skillful skill, chat so its implementation detail is no longer gone to live in the household of one's in-laws on getting married at this.

The technology of the present invention strictly is not defined as the gear that must be entirely the epicyclic train composition for the enforcement demand of speed changer 2, and only be to be defined in its terminal transmission stage to should be a planet train of gearings, and the epicyclic train of this terminal speed change be input as sun gear, its output then be planet carrier and or one of ring gear.In following part embodiment of the present invention, adopt a planet train of gearings as the single structure of speed changer 2, omit any conduction mechanism that terminal epicyclic train and 100 of power sources can exist, simplify by this and have the knack of this type of skill person to the understanding of the technology of the present invention.Only, have the knack of this type of skill person and also must know: a terminal epicyclic train is non-necessary condition for 2 enforcements of speed changer in the technology of the present invention also, the also unique enforcement of non-the technology of the present invention speed changer 2 of speed changer 2 that only exists with single epicyclic train form.Under the situation of implementing with the nonterminal epicyclic train, the present invention's " clutch cuts out/turn on the power the pattern in path in the speed changer downstream " also can use thereon easily, for example in the transmission state of a single output mode, clutch of the present invention only needs " pinnings " this single power path to get final product, and does not need ring gear 34 and the start of planet carrier 32 on reverse direction of " pinning " epicyclic train 3 as among this exposure embodiment the time.

See also (and please refer to the 4th figure) shown in the 5th figure and the 6th figure, be respectively the detailed explosive view of implementing of part of the 4th figure illustrated embodiment and the generalized section after the combination.This embodiment's enforcement is used in the flower drum shell 5, power source 100, speed changer 2, clutch 1 make up according to the fixedly axle center 10 on flower drum shell 5 center lines successively with clutch transmission group 4, cooperate the enforcement of dynamic transfer system of the present invention, building as the flower drum shell 5 that rotates output and the configuration between system is to comprise that a right side ratchet ring 51, is fixed in flower drum shell 5 interior flower drum shell ratchet rings 53, as system's output intermediate piece and is positioned at the left side pearl bowl 55 of opposite side and a flower drum shell left cap 57 of this opposite side sealing.

As shown in the figure, the power source 100 that this embodiment implements with motor is implemented on the side (left side) in the flower drum shell 5, is to include a motor stator support 101 and a motor rotor 103.

The speed changer 2 that connects power source 100 is implemented with single epicyclic train 3, is and comprises on sun gear 31, a planet carrier 32, a ring gear 34 and the planet carriers 32 that are pivoted that are hubbed on the axle center 10 and directly driven by power source 100 and engagement rotates in a plurality of planetary pinions 33 (being illustrated as 3) of 34 of sun gear 31 and ring gears.

See also Fig. 6 and shown in Figure 7, wherein Fig. 7 is in order to only to show the corresponding relation of planet carrier 32, ring gear 34 and flower drum shell ratchet ring 53.As shown in the figure, the output of this planet train of gearings 3 system can by ring gear 34 or planet carrier 32 both wherein one with itself rotating power when the forward, see through the flower drum shell 5 that flower drum shell ratchet ring 53 covers rotation outside exporting to.In design, can that is be flower drum shell ratchet ring 53 with solid memder for asking, as the ring gear 34 common output member with planet carrier 32, therefore in construction, the external diameter of ring gear 34 or planet carrier 32 (as clutch end) size want rough quite so that the two can convenient enforcement with the selectivity output of 53 of flower drum shell ratchet rings.And in this embodiment, the combination that the combination that ring gear 34 and flower drum shell ratchet ring are 53 and planet carrier 32 and flower drum shell ratchet ring are 53 be adopt can unidirectional interlock with ratchet collocation the overrunning clutch 200 that exists of ratchet ring form for it.

As shown in Figure 7, ring gear 34 of the present invention can comprise again one with the ring gear toothed region 341 of planetary pinion 33 engagement and the adjacent conduct ring gear ratchet section 343 by clutch 1 control inputs.

See also shown in Figure 8, the three-dimensional exploded view of clutch 1 primary component that has the dynamic transfer system of back segment clutch device for the present invention; Ditto described, clutch 1 of the present invention is for external force control start, to determine the way of output of epicyclic train 3.This external force is inputted by clutch transmission group 4, its implementing direction then is to point to the 1st direction feeding start by illustrated the 2nd direction, this feeding start also is stored to potential energy replys in the torsion spring 19, after removing in external force, automatically with the replying state (pointing to the 2nd direction feeding by the 1st direction) of clutch 1 to " closing power path " position of " making simultaneously planet carrier 32 and ring gear 34 idle running ".

As shown in the figure, in this embodiment clutch 1 comprises that mainly a fulcrum fixed base 11, that can't rotate with axle center 10 secure bond is located at the ring gear control cam 13, of fulcrum fixed base 11 near clutch transmission groups 4 and is located at the planet carrier control cam 15 of fulcrum fixed base 11 other ends, a plurality ofly is located on the planet carrier 32 and can controls planet carrier that cam 15 elasticity protrude out or inside contract stretch salient point 17 (being illustrated as three) and an answer torsion spring 19 (seeing also Fig. 6) that is sheathed on fulcrum fixed base 11 center flange to planet carrier.

Fulcrum fixed base 11 ring body for being fixedly installed is it on and be provided with a central periphery gilled rings 111, a plurality ofly be located at the salient point hole clipping 115 (being illustrated as three) of the ratchet through hole 113 (being illustrated as three) of gilled rings 111 inner edges, the flexible salient point 17 of a plurality of corresponding planet carrier and be hubbed at individually in the ratchet through hole 113 and divide the fulcrum ratchet 201 that is exposed to gilled rings 111 both sides.

Ring gear control cam 13 is located on the side of driving component 45 of fulcrum fixed base 11 nearly clutch transmission groups 4, be and driving component 45 interlocks to include again on a plurality of corresponding driving components 45 the corresponding control chute 133 (being illustrated as three) of ratchet through hole 113 on the driving input component 131 (being illustrated as three) that drives cylinder 451 and a plurality of and the fulcrum fixed base 11 and fulcrum ratchet 201.Wherein, drive cylinder 451 and adopt corresponding configuration with driving input component 131 and fulcrum ratchet 201 (or ratchet through hole 113) with control chute 133, its enforcement is to be set in pairs principle.Among the present invention, the formation of control chute 133 is to control the form configuration of cam, its Configuration Design principle is deciding unlatching (jack-up) or closure (lower contracting) state of fulcrum ratchet 201 with being limited to wherein the fulcrum ratchet 201 that slides according to its pivoted position, and then determines that whether ring gear 34 is in the blocked dotted state of propping up that has in the reverse direction of itself.As shown in the figure, control chute 133 can comprise again a chute first end 1331 and a chute the second end 1333.

Planet carrier control cam 15 is located on the other end of fulcrum fixed base 11 near epicyclic train 3, is to be a plectane body configuration.The position that cooperates the flexible salient point 17 of planet carrier, be that outer rim in planet carrier control cam 15 protrudes out and is provided with branched some guid arm 151, this salient point guid arm 151 by the plectane body outwards, extend to tilt to the direction of chute the second end 1333 towards a side of fulcrum fixed base 11 and by chute first end 1331 and stretch a predetermined length, the free terminal of salient point guid arm 151 is defined as a sealing end 1511.

The flexible salient point 17 of planet carrier is arranged in the salient point receiving hole on the planet carrier 32, and protrudes out towards planet carrier control cam 15 elasticity, and its relative position is corresponding with the salient point hole clipping 115 on the fulcrum fixed base 11.

At the clutch 1 of previous embodiment, the driving component 45 of ring gear control cam 13 and planet carrier control cam 15 and clutch transmission group 4 is interlock with limitation, and fulcrum fixed base 11 then is to be fixed on the axle center 10; In other words, gear control cam 13 is the relation that can relatively rotate a limited angle with combination and the fulcrum fixed base 11 of planet carrier control cam 15, and the scope of its rotation then length with control chute 133 is identical.

As shown in the figure, extended to the direction of chute the second end 1333 by chute first end 1331 and to be defined as the 2nd direction (this direction can be described as again reverse direction), then be defined as the 1st direction (this direction can be described as positive veer) and extended to the direction of chute first end 1331 by chute the second end 1333.

See also shown in Figure 10, the three-dimensional exploded view of clutch transmission group 4 primary components that has the dynamic transfer system of back segment clutch device for the present invention.Wherein, clutch transmission group 4 comprises that driving click seat 43 that a driving component 41 for external force input, is driven by driving component 41 and a driving component 45 are placed and is provided with at least one overrunning clutch 200 that this overrunning clutch 200 is engaged in the single direction ratchet of right side ratchet ring 51 inner ring surfaces outside driving click seat 43.When dynamic transfer system of the present invention is arranged on the electric bicycle, this driving component 41, can be to be incorporated on the pedal crank of electric bicycle, by this, when the rider begins forward when trampling foot treadle, can provide an external force to input to driving component 41 and impel its forward.When driving component 41 drives driving click seat 43 forwards and power source 100 power (namely epicyclic train 3 unpowered outputs) is not provided, the overrunning clutch 200 of driving click seat 43 will mesh and drive right side ratchet ring 51 together with flower drum shell 5 forwards of fixing with right side ratchet ring 51 close-fittings.In other words, the external force of being inputted by driving component 41 exactly will directly be used for driving flower drum shell 5 rotations.And when driving component 41 drove 43 reverse of driving click seat, then no matter whether power source 100 provided power, and the overrunning clutch 200 of driving click seat 43 all will skid mutually with right side ratchet ring 51.As for, when power source 100 provides power, and driving component 41 is when driving driving click seats 43 forward, then sees through the power that epicyclic train 3 exports by power source 100 and will assist drive flower drum shell 5 forwards; If epicyclic train 3 drives flower drum shell 5 positive rotary speeds greater than driving click seat 43 positive rotary speeds, then the overrunning clutch 200 of driving click seat 43 skids; If epicyclic train 3 drives flower drum shells 5 positive rotary speeds less than driving click seat 43 positive rotary speeds, then the power exported of power source 100 can provide a torsion, make the external force of inputting from driving component 41 that the labor-saving effect be arranged.

This driving component 45 is located in the center depression 451 of driving click seat 43, and see through driving input component 131 on the driving cylinder 451 interlock ring gears control cam 13 on it.And in driving

click seat

43 and 45 of driving components a C shape torsion spring 47 as the two interlock buffering is set.This C shape torsion spring 47 is sheathed in the set annular recess of driving component 45 outermost anchor rings, and a protruding terminus of C shape torsion spring 47 be snapped in the torsion spring locating point 433 of center depression 431 sides and with 43 combinations of driving click seat.This C shape torsion spring 47 can provide a kind of function of similar one-way clutch, when driving component 41 drives driving click seat 43 forward, because C shape torsion spring 47 will have the tendency of reduced inner diameter, follows forward so can a clamping force is provided and drive it driving component 45.Relatively, when driving component 41 drives driving click seats 43 and reverses, because C shape torsion spring 47 will have the tendency that enlarges internal diameter, so its clamping force to driving component 45 will reduce and the tendency that causes the driving component 45 namely of skidding and then not reverse arranged.Yet, no matter be forward or reverse, when in case driving component 45 can't continue to rotate because of some cause (for example but do not limit to clutch transmission group 4 have with epicyclic train 3 lock), then no matter driving component 41 is to drive driving click seat 43 forwards or reverse, all can skidding (namely C shape torsion spring 47 can skid) occur with driving component 45 in the annular recess of driving component 45.

See also Fig. 4, Fig. 7,8 and shown in Figure 9.Among the present invention, when having external force input clutch transmission group 4 to make it carry out rotation start on the 1st direction (positive veer) (that is the start in the external force path that turns on the power of getting involved), its part start is to be rotated by the several angle that driving component 41 points on the 1st direction, interlock driving click seat 43, buffering drive driving component 45, so that the forward start is inputed to clutch 1; This while, external force also is stored to potential energy replys in the torsion spring 19.In clutch 1, be to make ring gear control cam 13 also point to the rotation of the 1st direction by the start of driving component 45, at this moment, fulcrum ratchet 201 namely relatively slides to chute the second end 1333 by chute first end 1331.At this moment, the other end that fulcrum ratchet 201 is positioned at gilled rings 111 namely with ring gear 34 on ring gear ratchet section 343 form the one-dimensional consolidation state that upwardly opens, impel the ring gear 34 of epicyclic train 3 on the reverse direction of itself, will be subject to the supporting locking of fulcrum ratchet 201 and stressed fulcrum when forming the epicyclic train operation, and then open the start output of planet carrier 32 when forward, that is open the power outgoing route of planet carrier 32 on itself positive veer.And at the same time, the salient point guid arm 151 of the planet carrier of interlock control cam 15 namely rotates by (bottom side of Fig. 9) in the corresponding salient point hole clipping 115 that stretches into, under flexible salient point 17 leading edges of planet because of forward and withdraws from.By the elastic-restoring force of the effect of pulling out of pushing away of salient point guid arm 151 and flexible salient point 17 inside of planet, the flexible salient point 17 of planet is protruded into again grappling in the salient point hole clipping 115 of fulcrum fixed base 11.That is, with planet carrier 32 and fulcrum fixed base 11 one-dimensional consolidation on the reverse direction of planet carrier 32 itself, impel the planet carrier 32 of epicyclic train 3 will be subject on the reverse direction of itself that the flexible salient point 17 of planet is anchored to the locking effect of salient point hole clipping 115 and stressed fulcrum when forming the epicyclic train operation, and then the start output of open ring gear 34 when forward, that is the power outgoing route of open ring gear 34 on itself positive veer.In simple terms, when having the external force intervention to make driving component 45 forward of clutch transmission group 4, both can be subject to 1 one-dimensional consolidation of clutch and the effect of stressed fulcrum can be provided on the reverse direction of itself with making ring gear 34 and planet carrier 32, and can outputting power on the positive veer of ring gear 34 and planet carrier 32 both itself.

At this moment, the sense of rotation of the sun gear 31 that is driven by power source 100 will determine that power will be exported by ring gear 34 or planet carrier 32.When sun gear 31 input be forward power the time, will make planet carrier 32 trend of forward, 34 trend that reverse is arranged of ring gear are simultaneously arranged; Therefore, ring gear 34 will be subject to the supporting locking of fulcrum ratchet 201 of clutch 1 and become fulcrum, and make power output power to flower drum shell 5 forwards by the planet carrier 32 of forward.At this moment, the flexible salient point 17 of planet will be the slippage state between the two with salient point hole clipping 115.Relatively, what input when sun gear 31 is when reversing power, will make planet carrier 32 that the trend of reverse, 34 trend that forward is arranged of ring gear are simultaneously arranged; Therefore, planet carrier 32 will be subject to that the flexible salient point 17 of planet is anchored to the locking effect of salient point hole clipping 115 and stressed fulcrum when forming the epicyclic train operation, and make power output power to flower drum shell 5 forwards by the ring gear 34 of forward.At this moment, ring gear 34 will be the slippage state between the two with fulcrum ratchet 201.

On the other hand, when without external force input clutch transmission group 4 (that is the start of closing power path that gets involved without external force), the potential energy of replying in the torsion spring 19 discharges, and is clutch transmission group 4 is pointed to answer rotation on the 2nd direction (reverses).At this moment, its part start is: driving component 41 points to the answer of the 2nd direction several angle and rotates, interlock driving click seat 43, and buffering drives driving component 45, and then the reverse that control ring gear control cam 13 points on the 2nd direction is rotated.

In clutch 1, be that the reverse that makes ring gear control cam 13 also point to the 2nd direction is rotated by the reverse start of driving component 45, at this moment, fulcrum ratchet 201 namely relatively slides to chute first end 1331 by chute the second end 1333.At this moment, the other end that fulcrum ratchet 201 is positioned at gilled rings 111 namely with ring gear 34 on ring gear ratchet section 343 form closed slippage state downwards, the ring gear 34 that impels epicyclic train 3 itself forward or reverse direction on all will be the slippage state and can't consist of stressed fulcrum with fulcrum ratchet 201.Simultaneously, the salient point guid arm 151 of the planet carrier control cam 15 of interlock namely rotates in the corresponding salient point hole clipping 115 that stretches into because reversing, under the leading edge of the flexible salient point 17 of planet (such as the dotted line position of the 9th figure), the effect of pulling out that pushes away by salient point guid arm 151, be that planet is stretched salient point 17 in the salient point hole clipping 115 of grappling " shoveling out ", also be about to planet carrier 32 and separate with fulcrum fixed base 11, the planet carrier 32 that impels epicyclic train 3 itself forward or reverse direction on all will and planet carrier control 15 on cam and present the slippage state and can't consist of stressed fulcrum.By this, because whole epicyclic train 3 there is no any element that becomes stressed fulcrum; So even this moment, power source 100 still provided power input, the power of no matter being inputted by sun gear 31 is forward or reverse, all can only make whole epicyclic train 3 idle running, and can't driving ring gear 34 or planet carrier 32 output power on the flower drum shell 5.

In other words, in the present invention, when the driving component 41 of any this clutch transmission group 4 of external force start is not arranged, clutch 1 is the position that is in " cutting out power path ", at this moment, the ring gear 34 of epicyclic train 3 and planet carrier 32 all are in not the free rotary state fixed with axle center 10, be with, epicyclic train 3 also can't transmit any power that may be output to flower drum shell 5.

In previous embodiment of the present invention, be to comprise two interlocks but discrete cam and driven member pair, one of them is in order to the point operation (ring gear control cam mechanism) of control to ring gear 34, and another then is a point operation (planet carrier control cam mechanism) of controlling planet carrier 32.In ring gear control cam mechanism, cam profile is the configuration of control chute 133, and driven member then is fulcrum ratchet 201; And in planet carrier control cam mechanism, cam profile is the configuration of salient point guid arm 151, and driven member then is the flexible salient point 17 of planet carrier.In existing skill, the type of reaching this type of compound cam is various, this type of technology be for have the knack of this type of skill person, according to aforementioned exposure of the present invention, implementer easily; For example, in another not shown embodiment, ring gear can be controlled cam 13 and be combined into a plate body with planet carrier control cam 15, and be arranged at the homonymy of gilled rings 111, and cooperate again the interference of the space of other parts and start to get rid of and process, can reach the function of previous embodiment, and the roughly the same variation of this type of equivalence, be ripe by haveing the knack of this type of skill person, and do not exceed the scope that the present invention discloses, do not chatted so do not go to live in the household of one's in-laws on getting married at this.

Each embodiment of the following stated, identical because the structure of most of element and function lie in previous embodiment, so identical or similar element will directly give identical element title and numbering, and repeat no more its details.

See also the 11st figure, have the second preferred embodiment structure configuration schematic diagram of the dynamic transfer system of back segment clutch device for the present invention.The dynamic transfer system of present embodiment is to be similar to previous embodiment substantially, is implemented in equally in the flower drum shell 5, rotates in order to drive this flower drum shell 5.And, and be to arrange according to a fixing axle center 10 equally, it includes a power source 100, a speed changer 2, a clutch 1 and a clutch transmission group 4 equally.Include rotatable some transmission units in the speed changer 2, those transmission units comprise that again a terminal epicyclic train 7 is linked to flower drum shell 5 as the output of power with overrunning clutch 200.Similarly, this clutch 1 has at least a part of system and axle center 10 fixed and be " switch " (Switch) role and without the function of transferring power who plays the part of power output.When any external force not being arranged when clutch transmission group 4 imposes on clutch 1 start, clutch 1 is the position that is in " cutting out power path "; At this moment, this clutch 1 be with this speed changer 2 in all these transmission units all form not fixed releasing state, make this all transmission unit in this speed changer 2 all without any stressed fulcrum, and then the terminal epicyclic train 7 that makes this power can't see through this speed changer 2 be exported.That is when clutch 1 was in the position of " cutting out power path ", terminal epicyclic train 7 can only dally at most and can't produce any power that may be output to flower drum shell 5.And when external force sees through clutch transmission group 4 and orders about clutch 1 start with " path turns on the power ", be make the terminal planet carrier 72 of terminal epicyclic train 7 fixed in one direction (positive veer) with axle center 10, the monodirectional locking state of other direction (reverse direction) slippage.That is to say, when this clutch 1 enters this " path turns on the power " state, this clutch 1 be with this speed changer 2 at least one of them transmission unit (the namely terminal planet carrier 72 of terminal epicyclic train 7) form fixed, make this be become the stressed fulcrum of this speed changer 2 by fixed transmission unit (terminal planet carrier 72), and then make its power can see through that other are not exported by the transmission of fixed transmission unit (namely being arranged at the end ring gear 74 of terminal epicyclic train 7 and this overrunning clutch 200 between the flower drum shell 5) in this speed changer 2.

The present invention's the second preferred embodiment shown in the 11st figure and the difference of previous embodiment are described as follows.

In the embodiment shown in the 11st figure, this power source 100 be a shell maintain static and internal rotor 104 can be just, the motor of contrary direction rotation.This power source 100(motor) internal rotor 104 is can counterrotating mode to be sheathed on this axle center 10 and can to carry out rotatablely moving of forward or reverse direction with respect to fixed this axle center 10.This speed changer 2 is to have comprised two groups of epicyclic trains (wherein a group is aforesaid terminal epicyclic train 7).Wherein, that group epicyclic train of contiguous power source 100 can be described as the front end epicyclic train, and it includes a front end sun gear 61, a front end planet carrier 62, some (normally three) front end planetary pinions 63 and a front end ring gear 64.Be provided with an overrunning clutch 105 of unidirectional interlock (interlock during internal rotor 104 forward, slippage when reversing) between this front end sun gear 61 and the internal rotor 104.Front end planet carrier 62 is to be fixed in power source 100 shells and to be fixed element.64 of front end ring gears be linked to terminal epicyclic train 7 terminal sun gear 71 and with the rotation of its interlock.

This terminal epicyclic train 7 is to abut in clutch 1 and be subjected to it to control to determine whether rotating power can be exported to flower drum shell 5.Terminal epicyclic train 7 has comprised equally: a terminal sun gear 71, a terminal planet carrier 72, some (normally three) terminal planetary pinions 73 and an end ring gear 74.This terminal sun gear 71 except can be subjected to front end ring gear 64 drive rotation, simultaneously also and be provided with another overrunning clutch 106 of unidirectional interlock (slippage when interlock when internal rotor 104 reverses, forward) between the internal rotor 104.Whether terminal planet carrier 72 is to be linked to this clutch 1, can order about clutch 1 start by whether having external force to see through clutch transmission group 4, decide this terminal planet carrier 72 can be by 1 on clutch fixed and then become the stressed fulcrum of this speed changer 2.Between end ring gear 74 and flower drum shell 5, then be provided with the overrunning clutch 200 of a unidirectional interlock (interlock during end ring gear 74 forward, slippage when reversing).By aforementioned structure, this second preferred embodiment equally can reach by the internal rotor 104 of power source 100 just, reverse the speed change that two kinds of different speed ratios are provided, and decide this terminal epicyclic train 7 can export power to the function of flower drum shell 5 by whether having external force to impose on clutch 1 start from clutch transmission group 4.

As for, clutch 1 in this second preferred embodiment, its concrete structure with make flowing mode and then be similar to substantially the embodiment shown in the 8th figure, its difference is: the clutch 1 in this second preferred embodiment only needs only need arrange between fixed terminal planet carrier 72 and clutch 1 and the axle center 10 overrunning clutch 201 of one group of unidirectional interlock (slippage when interlock during forward, reverse).

See also 12A figure and 12B figure, be respectively the 3rd preferred embodiment structure configuration schematic diagram (close the power path state and turn on the power path status) that the present invention has the dynamic transfer system of back segment clutch device.Most elements of this 3rd preferred embodiment are all identical with the second preferred embodiment shown in the 11st figure, so repeat no more.Its unique difference is that the overrunning clutch between clutch 1 and the axle center 10 is changed into the key slot type design, for example, is designing the vertically slide key 202 of relative sliding between an occlusal position and a disengaging configuration between clutch 1 and the axle center 10.When without any external force when clutch transmission group 4 imposes on clutch 1 start, this slide key 202 is to remain in this disengaging configuration (namely " closing power path " state shown in 12A figure), causes terminal epicyclic train 7 can only dally at most and also can't produce any power that may be output to flower drum shell 5.And when external force being arranged when clutch transmission group 4 imposes on clutch 1 start, this slide key 202 can be switched to occlusal position (namely " path turns on the power " state shown in 12B figure), this clutch 1 is that the terminal planet carrier 72 with terminal epicyclic train 7 forms and fixedly becomes stressed fulcrum, and then makes its power see through the transmission of this overrunning clutch 200 between end ring gear 74 and the flower drum shell 5 and export.

But only above-described embodiment shall not be applied to restriction application area of the present invention, and protection scope of the present invention should be take claim content of the present invention institute definition techniques spirit and the impartial scope that included of changing thereof as main person.The equalization of namely generally doing according to claim of the present invention changes and Xiu Shi ﹐ will not lose main idea Suo Zai ﹐ of the present invention and also do not break away from the spirit and scope of the present invention, and the former capital should be considered as further status of implementation of the present invention.

Claims

1. the dynamic transfer system with back segment clutch device arranges according to a fixing axle center, it is characterized in that, comprising:

One power source;

One speed changer is connected with this power source, carries out transformation of speed in order to the power that this power source is exported, and this speed changer comprises that a terminal epicyclic train is as the output of power; This epicyclic train comprises again sun gear, a planet carrier, a ring gear that is hubbed on this axle center and is driven by this power source and is hubbed on this planet carrier and engagement rotates in a plurality of planetary pinions between this sun gear and this ring gear; And

One clutch utilizes external force control start, and to determine the way of output of this epicyclic train, its selection has the path status that turns on the power of closing freely the power path state and having this external force to get involved; When making this clutch enter this when there being this external force to get involved to turn on the power path status, so this clutch with in this ring gear of this epicyclic train and this planet carrier one of them forms fixed with this axle center on the reverse direction of itself at least, make in this ring gear and this planet carrier one of them can become in the reverse direction of itself operation of this epicyclic train at least the time stressed fulcrum, so that by this power of this sun gear input, see through in this planet carrier of this planet gear drives and this ring gear among both and export for forward person; And after this external force is removed, this clutch is that elastic recovery is closed the power path state to this, at this moment, this clutch is about to that this planet carrier of this epicyclic train and this ring gear discharge so that the stressed fulcrum that this planet carrier and this ring gear both can't become this epicyclic train when operating, at this moment, by this power of this sun gear input, namely can't see through this epicyclic train output.

2. the dynamic transfer system with back segment clutch device as claimed in claim 1, it is characterized in that, also comprise a flower drum shell, this power source, this speed changer and this clutch are arranged in this flower drum shell, and wherein this ring gear and this planet carrier flower drum shell ratchet ring in this flower drum shell forms respectively other overrunning clutch and is combined.

3. the dynamic transfer system with back segment clutch device as claimed in claim 1, it is characterized in that, this clutch also comprises a ring gear control cam mechanism in order to the point operation of controlling this ring gear, and a planet carrier control cam mechanism in order to a point operation of controlling this planet carrier.

4. the dynamic transfer system with back segment clutch device as claimed in claim 3 is characterized in that, this clutch comprises that again ring gear control cam mechanism and this planet carrier control cam mechanism are two interlocks but discrete cam and driven member pair; In this ring gear control cam mechanism, this cam profile is the control chute with this external force start, and this driven member then is a fixing fulcrum ratchet; And in this planet carrier control cam mechanism, the cam profile of this cooperation is the salient point guid arm with this external force start, and this driven member then is the flexible salient point of a planet carrier of being located on this planet carrier.

5. the dynamic transfer system with back segment clutch device as claimed in claim 3 is characterized in that, it mainly is to be structured in two cams in the same plate body and driven member pair that this ring gear control cam mechanism and this planet carrier are controlled cam mechanism; In this ring gear control cam mechanism, this cam profile is the control chute with this external force start, and this driven member then is a fixing fulcrum ratchet; And in this planet carrier control cam mechanism, the cam profile of this cooperation is the salient point guid arm with this external force start, and this driven member then is the flexible salient point of a planet carrier of being located on this planet carrier.

6. the dynamic transfer system with back segment clutch device as claimed in claim 3, it is characterized in that, this clutch comprise again one with the fulcrum fixed base of this axle center secure bond, this ring gear control cam mechanism comprises again the ring gear control cam of being located at this fulcrum fixed base one side, a plurality of ratchet through holes of being located at the gilled rings inner edge of this fulcrum fixed base, and the fulcrum ratchet that is hubbed at respectively in this ratchet through hole and minute is exposed to these gilled rings both sides, comprise again the control chute that this ratchet through hole on a plurality of and this fulcrum fixed base and this fulcrum ratchet are corresponding on this ring gear control cam; When this clutch enters the fulcrum start of this path status that turns on the power, driving this ring gear control cam forward rotates, so that this fulcrum ratchet is slided to one second end at this control chute opposite side by a first end of this control chute, impel this fulcrum ratchet namely to form one-dimensional consolidation with this ring gear, impel this ring gear of this epicyclic train to become the fulcrum that this epicyclic train operates in the reverse direction of itself; And when this clutch enters the start that this closes the power path state, drive this ring gear control cam and reverse rotation, so that this fulcrum ratchet is namely slided to this first end by this second end, separate so that this fulcrum ratchet forms start with this ring gear, this ring gear that impels this epicyclic train in itself forward or reverse direction on all can't be as the fulcrum of this epicyclic train operation.

7. the dynamic transfer system with back segment clutch device as claimed in claim 3, it is characterized in that, this clutch comprise again one with the fulcrum fixed base of this axle center secure bond, this planet carrier control cam mechanism comprises again the planet carrier control cam of being located at nearly this planet carrier of this fulcrum fixed base, a plurality of being located on this planet carrier and to this planet carrier controlled the flexible salient point of planet carrier that cam elasticity protrudes out, and a plurality ofly be arranged on this fulcrum fixed base and the salient point hole clipping of the flexible salient point of corresponding this planet carrier, the position that cooperates the flexible salient point of this planet carrier, the outer rim of this planet carrier control cam protrudes out again and is provided with branched some guid arm, and this salient point guid arm is outside, side to this fulcrum fixed base stretches a predetermined length; When this clutch enters the fulcrum start of this path status that turns on the power, this salient point guid arm forward that drives this planet carrier control cam is by in this salient point hole clipping, withdraw under this leading edge of the flexible salient point of this planet, by removing of this salient point guid arm, the flexible salient point of this planet is protruded into again grappling in this salient point hole clipping of this fulcrum fixed base, also be about to this planet carrier and this fulcrum fixed base one-dimensional consolidation on the reverse direction of this planet carrier itself, make this planet carrier on the reverse direction of itself, become the fulcrum of this epicyclic train operation; And when this clutch enters the start that this closes the power path state, this salient point guid arm reverse that is this planet carrier control cam of interlock is stretched in this corresponding salient point hole clipping, under the leading edge of the flexible salient point of this planet, the effect of pulling out that pushes away by this salient point guid arm, the flexible salient point of this planet is shoveled out in this salient point hole clipping of grappling, so that this planet carrier separates with this fulcrum fixed base, by this with this planet carrier by discharging on this clutch, and then this planet carrier that impels this epicyclic train in itself forward or reverse direction on all can't be as the fulcrum of this epicyclic train operation.

8. the dynamic transfer system with back segment clutch device as claimed in claim 1, it is characterized in that, described this external force is to transfer to this clutch by a clutch transmission group, this clutch transmission group comprises that again driving click seat that a driving component for the input of this external force, is driven by this driving component and directly transfers to the driving component of this clutch with power, and a C shape torsion spring that cushions as the two interlock is set again between this driving click seat and this driving component.

9. the dynamic transfer system with back segment clutch device as claimed in claim 1 is characterized in that:

This power source be a shell maintain static and its internal rotor can be just, the motor of contrary direction rotation; This internal rotor of this power source is can counterrotating mode to be sheathed on this axle center and can to carry out rotatablely moving of forward or reverse direction with respect to fixed this axle center;

This speed changer has comprised a front end epicyclic train and this terminal epicyclic train;

This front end epicyclic train includes a front end sun gear, a front end planet carrier, some front end planetary pinions and a front end ring gear; Be provided with an overrunning clutch of unidirectional interlock between this front end sun gear and this internal rotor; This front end planet carrier is fixed element: this front end ring gear be linked to this terminal epicyclic train a terminal sun gear and with the rotation of its interlock;

This terminal epicyclic train abuts in this clutch and is subjected to it to control to determine whether rotating power can be exported; This terminal epicyclic train includes this terminal sun gear, a terminal planet carrier, some terminal planetary pinions and an end ring gear; This terminal sun gear is except can being subjected to the rotation of this front end ring gear drive, simultaneously also and be provided with another overrunning clutch of unidirectional interlock between this internal rotor; This terminal planet carrier is to be linked to this clutch, can by whether having this external force to order about the clutch start, decide this terminal planet carrier whether can by this clutch fixed and then become the stressed fulcrum of this speed changer.

10. the dynamic transfer system with back segment clutch device as claimed in claim 1 is characterized in that, between this clutch and this axle center, more be provided with following one of them: the slide key of at least one overrunning clutch and key slot type design; Wherein, this slide key vertically relative sliding between an occlusal position and a disengaging configuration; When imposing on this clutch start without any external force, this slide key is to remain in a disengaging configuration namely this closes the power path state; And when having external force to impose on this clutch start, this slide key can be switched to namely this path status that turns on the power of an occlusal position.

11. the dynamic transfer system with back segment clutch device arranges according to a fixing axle center, it is characterized in that, comprising:

One power source;

One speed changer is connected with this power source, in order to again output after accepting the power that this power source is exported and carrying out transmission; And, in this speed changer, include at least some transmission units; And,

One clutch, by external force control start, determining the way of output of this speed changer, power path state and a path status that turns on the power is closed in its selection; This clutch has at least a part of fixed with the axle center;

Wherein, when this clutch enters this and turns on the power path status, at least one of them transmission unit in this clutch and this speed changer forms fixed, make this be become the stressed fulcrum of this speed changer by fixed transmission unit, and then make this power can see through that other are not exported by the transmission of this fixed transmission unit in this speed changer;

Wherein, when this clutch enters this and cuts out the power path state, this clutch be with this speed changer in all these transmission units all form not fixed releasing state, make this all transmission unit in this speed changer all without any stressed fulcrum, and then make this power can't see through this speed changer to export.

12. the dynamic transfer system with back segment clutch device as claimed in claim 11 is characterized in that:

Described these the some transmission units of this speed changer comprise that again a terminal epicyclic train is as the output of power; This epicyclic train comprises again sun gear, a planet carrier, a ring gear that is hubbed on this axle center and is driven by this power source and is hubbed on this planet carrier and engagement rotates in a plurality of planetary pinions between this sun gear and this ring gear;

When having this external force to get involved this clutch, this clutch system enters this path status that turns on the power, at this moment, this clutch be with in this ring gear of this epicyclic train and this planet carrier one of them forms fixed with this axle center on the reverse direction of itself at least, make in this ring gear and this planet carrier one of them can become in the reverse direction of itself operation of this epicyclic train at least the time stressed fulcrum so that by this power of this sun gear input, see through in this planet carrier of this planet gear drives and this ring gear among both and export for forward person; And after this external force is removed, this clutch is that elastic recovery is closed the power path state to this, at this moment, this clutch is about to that this planet carrier of this epicyclic train and this ring gear discharge so that the stressed fulcrum that this planet carrier and this ring gear both can't become this epicyclic train when operating, at this moment, by this power of this sun gear input, namely can't see through this epicyclic train output.

13. the dynamic transfer system with back segment clutch device as claimed in claim 12, it is characterized in that, also comprise a flower drum shell, this power source, this speed changer and this clutch system are arranged in this flower drum shell, and wherein this ring gear and this planet carrier flower drum shell ratchet ring with this flower drum shell in forms respectively individual other overrunning clutch and is combined.

14. the dynamic transfer system with back segment clutch device as claimed in claim 12, it is characterized in that described this clutch comprises again one in order to the ring gear control cam mechanism of the point operation of controlling this ring gear and a planet carrier control cam mechanism in order to a point operation of controlling this planet carrier.

15. the dynamic transfer system with back segment clutch device as claimed in claim 14 is characterized in that, this clutch comprises that again ring gear control cam mechanism and this planet carrier control cam mechanism are two interlocks but discrete cam and driven member pair; In this ring gear control cam mechanism, this cam profile is the control chute with this external force start, and this driven member then is a fixing fulcrum ratchet; And in this planet carrier control cam mechanism, the cam profile of this cooperation is the salient point guid arm with this external force start, and this driven member then is the flexible salient point of a planet carrier of being located on this planet carrier.

16. the dynamic transfer system with back segment clutch device as claimed in claim 14, it is characterized in that, this clutch comprise again one with the fulcrum fixed base of this axle center secure bond, this ring gear control cam mechanism comprises again the ring gear control cam of being located at this fulcrum fixed base one side, a plurality of ratchet through holes of being located at the gilled rings inner edge of this fulcrum fixed base, and the fulcrum ratchet that is hubbed at respectively in this ratchet through hole and minute is exposed to these gilled rings both sides, comprise again the control chute that this ratchet through hole on a plurality of and this fulcrum fixed base and this fulcrum ratchet are corresponding on this ring gear control cam; When this clutch enters the fulcrum start of this path status that turns on the power, be to drive this ring gear control cam forward to rotate, so that this fulcrum ratchet is slided to one second end at this control chute opposite side by a first end of this control chute, impel this fulcrum ratchet namely to form one-dimensional consolidation with this ring gear, impel this ring gear of this epicyclic train to become the fulcrum that this epicyclic train operates in the reverse direction of itself; And when this clutch enters the start that this closes the power path state, be to drive this ring gear control cam to reverse rotation, so that this fulcrum ratchet is namely slided to this first end by this second end, separate so that this fulcrum ratchet forms start with this ring gear, this ring gear that impels this epicyclic train in itself forward or reverse direction on all can't be as the fulcrum of this epicyclic train operation.

17. the dynamic transfer system with back segment clutch device as claimed in claim 14, it is characterized in that, this clutch comprise again one with the fulcrum fixed base of this axle center secure bond, this planet carrier control cam mechanism comprises again the planet carrier control cam of being located at nearly this planet carrier of this fulcrum fixed base, a plurality of being located on this planet carrier and to this planet carrier controlled the flexible salient point of planet carrier that cam elasticity protrudes out, and a plurality ofly be arranged on this fulcrum fixed base and the salient point hole clipping of the flexible salient point of corresponding this planet carrier, the position that cooperates the flexible salient point of this planet carrier, the outer rim of this planet carrier control cam protrudes out again and is provided with branched some guid arm, and this salient point guid arm is outside, side to this fulcrum fixed base stretches a predetermined length; When this clutch enters the fulcrum start of this path status that turns on the power, be this salient point guid arm forward of driving this planet carrier control cam by in this salient point hole clipping, withdraw under this leading edge of the flexible salient point of this planet, by removing of this salient point guid arm, be that the flexible salient point of this planet is protruded into grappling in this salient point hole clipping of this fulcrum fixed base again, also be about to this planet carrier and this fulcrum fixed base one-dimensional consolidation on the reverse direction of this planet carrier itself, make this planet carrier on the reverse direction of itself, become the fulcrum of this epicyclic train operation; And when this clutch enters the start that this closes the power path state, this salient point guid arm reverse that is this planet carrier control cam of interlock is stretched in this corresponding salient point hole clipping, under the leading edge of the flexible salient point of this planet, the effect of pulling out that pushes away by this salient point guid arm, the flexible salient point of this planet is shoveled out in this salient point hole clipping of grappling, so that this planet carrier separates with this fulcrum fixed base, by this with this planet carrier by discharging on this clutch, and then this planet carrier that impels this epicyclic train in itself forward or reverse direction on all can't be as the fulcrum of this epicyclic train operation.

18. the dynamic transfer system with back segment clutch device as claimed in claim 12, it is characterized in that, described this external force transfers to this clutch by a clutch transmission group, this clutch transmission group comprises that again driving click seat that a driving component for the input of this external force, is driven by this driving component and directly transfers to the driving component of this clutch with power, and a C shape torsion spring that cushions as the two interlock is set again between this driving click seat and this driving component.

19. the dynamic transfer system with back segment clutch device as claimed in claim 11 is characterized in that:

This speed changer has comprised a front end epicyclic train and a terminal epicyclic train;

20. the dynamic transfer system with back segment clutch device as claimed in claim 11 is characterized in that, between this clutch and this axle center, more be provided with following one of them: the slide key of at least one overrunning clutch and key slot type design; Wherein, this slide key vertically relative sliding between an occlusal position and a disengaging configuration; When imposing on this clutch start without any external force, this slide key is to remain in a disengaging configuration namely this closes the power path state; And when having external force to impose on this clutch start, this slide key can be switched to namely this path status that turns on the power of an occlusal position.