CN206394804U - A kind of third gear fully-automatic gearbox - Google Patents

Abstract

The utility model discloses a kind of third gear fully-automatic gearbox, including：Central shaft, power input and wheel hub, the wheel hub are power output member, gear are provided between the central shaft and wheel hub, the gear includes：Planetary transmission, the first automatic centrifugation shifter and the second automatic centrifugation shifter, the planetary transmission include：Gear ring, centre wheel, planet carrier and planetary gear, the centre wheel is integrally formed or is fixedly connected with central shaft, the central shaft is mutually fixed with vehicle frame, the first freewheel clutch is provided between the gear ring and power input, the second freewheel clutch is provided between the planet carrier and wheel hub, first pallet piece of the first automatic centrifugation shifter sets up and is placed on planet carrier, second pallet piece of the second automatic centrifugation shifter is set up and is placed in wheel hub, and the second ratchet of the second automatic centrifugation shifter is arranged at the outer wall of gear ring.So as to which the requirement to stepping on frequency can be reduced when medium-to-high grade.

Description

A kind of third gear fully-automatic gearbox

【Technical field】

The utility model is related to technical field of bicycles, and in particular to a kind of third gear fully-automatic gearbox.

【Background technology】

Bicycle speed-varying unit is divided into two kinds of internal speed changer and outer speed changer, outer speed changer be use open link chain mechanism for Transmission system, transforms to chain by stirring the selector being installed in front of bicycle and different chains is realized on different flywheels Bar gearratio, because outer speed changer is exposed outside, therefore is easier to get rusty, and is easily disturbed by external force, so through Often periodic maintenance is needed to maintain, internal speed changer mainly using planetary gears as transmission main body, is sealed in inside flower-drum, By multilayer special seal material protection, so rainwater, dust, grease etc. cannot be introduced into, therefore without time-based maintenance, realize and exempt from The advantage of maintenance.The existing following defect of internal speed changer generally existing in the art：1st, hand shift is needed, it is impossible to realize and move certainly Shelves；2nd, when internal speed changer is shifted to high speed shelves, if stepping on frequency in reduction, then speed changer is difficult to hold in top gear.

【Utility model content】

To solve the above problems, the purpose of this utility model is to provide a kind of reduce to stepping on the third gear required frequently entirely certainly Dynamic speed changer.

To achieve the above object, the technical scheme that the utility model is taken is：A kind of third gear fully-automatic gearbox, including： Central shaft, power input and wheel hub, the wheel hub are power output member, and variable-speed motor is provided between the central shaft and wheel hub Structure, the gear includes：Planetary transmission, the first automatic centrifugation shifter and the second automatic centrifugation shifter, institute Stating planetary transmission includes：Gear ring, centre wheel, planet carrier and planetary gear, the centre wheel are integrally formed or fixed with central shaft Connection, the central shaft is mutually fixed with vehicle frame, and the first freewheel clutch, the row are provided between the gear ring and power input The second freewheel clutch is provided between carrier and wheel hub, the first automatic centrifugation shifter includes the first pallet piece frame, the One ratchet and at least one first pallet piece, first pallet piece are installed on the first pallet piece frame, first pallet piece Erection is placed on planet carrier, and first ratchet is arranged at the inwall of power input, the second automatic centrifugation gear shift machine Structure includes the second pallet piece frame, the second ratchet and at least one second pallet piece, and second ratchet is installed on the second pallet piece On frame, second pallet piece is set up and is placed in wheel hub, and second ratchet is arranged on gear ring.

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, the first automatic centrifugation shifter also includes At least one first STATEMENT OF FEDERALLY SPONSORED, first pallet piece is installed on the first pallet piece frame by the first connector, and described first STATEMENT OF FEDERALLY SPONSORED is installed on the first pallet piece frame by the second connector, and first pallet piece and the first STATEMENT OF FEDERALLY SPONSORED are in circumferencial direction On be set in distance, first pallet piece include first end, the second end and be arranged at first end and the second end it Between the first installation portion, provided with the ratchet being engaged with the first ratchet at the outer wall of the second end of at least one the first pallet piece Portion, the first installation portion of first pallet piece is provided with the first mounting hole for being used for installing the first connector, first linkage Part includes the 3rd end, the 4th end and the second installation portion being arranged between the 3rd end and the 4th end, described first Second installation portion of moving part is provided with the second mounting hole for being used for installing the second connector, the second end of first pallet piece And/or first the 3rd end of STATEMENT OF FEDERALLY SPONSORED be provided with balancing weight, on the first pallet piece frame or in the first STATEMENT OF FEDERALLY SPONSORED or the first spine Elastic component for controlling the first pallet piece initial position is installed, along the 3rd of the first STATEMENT OF FEDERALLY SPONSORED described in radial direction the on bluff piece End is limited in the inner side of the first pallet piece the second end, is limited in along the 4th end of the first STATEMENT OF FEDERALLY SPONSORED described in radial direction The inner side of one pallet piece first end is limited in the first STATEMENT OF FEDERALLY SPONSORED along the first end of the first pallet piece described in radial direction The inner side of 4th end, the second end of first pallet piece are limited in the inner side of the end of the first STATEMENT OF FEDERALLY SPONSORED the 3rd.

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, the second automatic centrifugation shifter also includes At least one second STATEMENT OF FEDERALLY SPONSORED, second pallet piece is installed on the second ratchet fixed mount by the 3rd connector, and described Two STATEMENT OF FEDERALLY SPONSOREDs are installed on the second ratchet fixed mount by the 4th connector, and second pallet piece and the second STATEMENT OF FEDERALLY SPONSORED are in circumference It is set in distance on direction, second pallet piece includes：Fifth end, the 6th end and it is arranged at fifth end and the 6th end It is provided with what is be engaged with the second ratchet at the 3rd installation portion between portion, the inwall of the 6th end of at least one the second pallet piece Ratchet portion, the 3rd installation portion of second pallet piece is provided with the 3rd mounting hole for being used for installing the 3rd connector, described second STATEMENT OF FEDERALLY SPONSORED includes the 7th end, the 8th end and the 4th installation portion being arranged between the 7th end and the 8th end, described the 4th installation portion of two STATEMENT OF FEDERALLY SPONSOREDs is provided with the 4th mounting hole for being used for installing the 4th connector, the 5th end of second pallet piece Portion and/or the 8th end of the second STATEMENT OF FEDERALLY SPONSORED are provided with balancing weight, and the fifth end along the second pallet piece described in radial direction is spacing 6th end of inner side, second pallet piece in the 8th end of the second STATEMENT OF FEDERALLY SPONSORED is limited in the end of the second STATEMENT OF FEDERALLY SPONSORED the 7th Inner side or the inner side, described of the second pallet piece fifth end is limited in along the 8th end of the second STATEMENT OF FEDERALLY SPONSORED described in radial direction 7th end of the second STATEMENT OF FEDERALLY SPONSORED is limited on the inner side of the 6th end of the second pallet piece, the second ratchet fixed mount or Elastic component for controlling the second pallet piece initial position is installed in two STATEMENT OF FEDERALLY SPONSOREDs or on the second pallet piece.

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, the first automatic centrifugation shifter also includes At least one first STATEMENT OF FEDERALLY SPONSORED, first pallet piece is installed on the first pallet piece frame by the first connector, and described first One end of STATEMENT OF FEDERALLY SPONSORED is flexibly connected with the pallet piece of one of them adjacent first, the other end of first STATEMENT OF FEDERALLY SPONSORED with it is adjacent Another first pallet piece is flexibly connected, and first pallet piece and the first STATEMENT OF FEDERALLY SPONSORED are set in distance in a circumferential direction, The first installation that first pallet piece includes first end, the second end and is arranged between first end and the second end Portion, the second end of first pallet piece, which is provided with balancing weight, the outer wall of the second end of at least one the first pallet piece, to be set There is the ratchet portion being engaged with the first ratchet, the first installation portion of first pallet piece, which is provided with, to be used to install the first connector Elastic component for controlling pallet piece initial position is installed on the first mounting hole, the first pallet piece frame.

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, the second automatic centrifugation shifter also includes At least one second STATEMENT OF FEDERALLY SPONSORED, second pallet piece is installed on the second pallet piece frame by the 3rd connector, and described second One end of STATEMENT OF FEDERALLY SPONSORED is flexibly connected with the pallet piece of one of them adjacent second, the other end of second STATEMENT OF FEDERALLY SPONSORED with it is adjacent Another second pallet piece is flexibly connected, and second pallet piece and the second STATEMENT OF FEDERALLY SPONSORED are set in distance in a circumferential direction, Second pallet piece includes fifth end, the 6th end and the 3rd installation being arranged between fifth end and the 6th end Provided with the ratchet portion being engaged with the second ratchet, described second at portion, the inwall of the 6th end of at least one the second pallet piece 3rd installation portion of pallet piece is provided with the 3rd mounting hole for being used for installing the 3rd connector, the fifth end of second pallet piece Provided with balancing weight, the elastic component for controlling pallet piece initial position is installed on the second pallet piece frame.

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, the first pallet piece frame includes：Circular base portion And the several mounting seats stretched out from the outer wall of circular base portion, first pallet piece is installed in mounting seat.

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, the second pallet piece frame includes：Circular base portion And the several mounting seats extended internally from the inwall of circular base portion, second pallet piece is installed in mounting seat.

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, first pallet piece is matched somebody with somebody with the first STATEMENT OF FEDERALLY SPONSORED Conjunction face is set in involute shape or arc shaped,

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, second pallet piece is matched somebody with somebody with the second STATEMENT OF FEDERALLY SPONSORED Conjunction face is set in involute shape or arc shaped.

Preferably, in a kind of above-mentioned third gear fully-automatic gearbox, one end of the central shaft is provided with first and tight part, The other end of the central shaft is provided with second and tight part, described first and tight bearing or rolling is provided between part and power input Wheel, is provided with bearing or roller between the power input and wheel hub, between the wheel hub and second and tight part provided with bearing or Roller

Compared with prior art, the utility model has the advantages that：Third gear fully-automatic conversion in the utility model Fast device compact conformation, easy for installation, transmission efficiency, gear shift are firm, speed change is stable, and the speed changer in the utility model exists in addition It can be reduced when medium-to-high grade to stepping on the requirement of frequency, so that it is lighter to ride.

【Brief description of the drawings】

Fig. 1 is the main structure diagram of third gear fully-automatic gearbox in the utility model.

Fig. 2 is the decomposition texture schematic diagram of third gear fully-automatic gearbox in the utility model.

Fig. 3 is the cross section structure diagram along line A-A shown in Fig. 1.

Fig. 4 is the structural representation of the utility model the first automatic centrifugation shifter.

Fig. 5 is the structural representation of the utility model the second automatic centrifugation shifter.

In figure：1st, central shaft, 10, first and tight part, 11, second and tight part, 2, power input, 3, wheel hub, 4, planet Speed changer, 40, planet carrier, 41, gear ring, 42, planetary gear, 43, centre wheel, the 5, first automatic centrifugation shifter, the 50, first spine Bluff piece frame, 500, circular base portion, the 51, first pallet piece, 510, first end, 511, the second end, the 512, first installation portion, 513rd, ratchet portion, the 514, first mounting hole, 515, balancing weight, the 52, first STATEMENT OF FEDERALLY SPONSORED, the 520, the 3rd end, the 521, the 4th end, 522nd, the second installation portion, the 523, second mounting hole, 524, balancing weight, the 53, first ratchet, 54, elastic component, the 6, second automatic centrifugation Shifter, the 60, second pallet piece frame, 600, circular base portion, the 61, second pallet piece, 610, fifth end, the 611, the 6th end Portion, the 612, the 3rd installation portion, 613, ratchet portion, the 614, the 3rd mounting hole, 615, balancing weight, the 62, second STATEMENT OF FEDERALLY SPONSORED, the 620, the 7th End, the 621, the 8th end, the 622, the 4th installation portion, the 623, the 4th mounting hole, 624, balancing weight, the 63, second ratchet, 64, bullet Property part, the 7, first freewheel clutch, the 8, second freewheel clutch.

【Embodiment】

Further is made to a kind of third gear rear-guard fully-automatic gearbox described in the utility model below by specific embodiment Detailed description.

Join shown in Fig. 1 to Fig. 5, a kind of third gear fully-automatic gearbox, including：Central shaft 1, power input 2 and wheel hub 3, The wheel hub 3 is power output member, and gear is provided between the central shaft 1 and wheel hub 3, and the gear includes a set of Planetary transmission 4 and two sets of automatic centrifugation shifters (the first automatic centrifugation shifter 5 and second automatic centrifugation shifters 6)。

The planetary transmission 4 include planet carrier 40, gear ring 41, planetary gear 42 and centre wheel 43, the centre wheel 43 with Central shaft 1 is integrally formed, and the central shaft 1 is fixedly connected with vehicle frame, and first is provided between the gear ring 41 and power input 2 Freewheel clutch 7, in the present embodiment, the ratchet of first freewheel clutch 7 are arranged on the outer circumference surface of gear ring 41, The ratchet of first freewheel clutch 7 is arranged at the inwall of power input 2, certainly in other implementations, institute The ratchet for stating the first freewheel clutch 7 may also set up at the inwall of power input 2, the ratchet of the first freewheel clutch 7 On the outer circumference surface that may be disposed at gear ring 41, the utility model can be equally realized.Provided with the between the planet carrier and wheel hub Two freewheel clutches 8, in the present embodiment, the ratchet of second freewheel clutch 8 are arranged at the excircle of planet carrier 40 On face, the ratchet of second freewheel clutch 8 is arranged at the inwall of wheel hub 3, certainly in other implementations, described The ratchet of second freewheel clutch 8 be may also set up at the inwall of wheel hub 3, and the ratchet of second freewheel clutch 8 can also be set On the outer circumference surface for being placed in planet carrier 40, the utility model can be equally realized.

The first automatic centrifugation shifter 5 includes：First pallet piece frame 50, three the first pallet pieces 51, three One STATEMENT OF FEDERALLY SPONSORED 52 and the first ratchet 53, the first pallet piece frame 50 include：Circular base portion 500 and certainly circular base portion 500 Several mounting seats for stretching out of outer wall, the pallet piece 51 of the first STATEMENT OF FEDERALLY SPONSORED 52 and first is respectively arranged in mounting seat. Certainly in other embodiments, it is not provided with the first STATEMENT OF FEDERALLY SPONSORED 52 or first STATEMENT OF FEDERALLY SPONSORED 52 is only set or one the is only set One pallet piece 51, can equally realize the utility model.The first pallet piece frame 50 is integrally formed with planet carrier 40, and described One ratchet 53 is arranged at the inwall of power input 2 and is integrally formed with power input 2, and first pallet piece 51 passes through Pin is installed on the first pallet piece frame 50, and first STATEMENT OF FEDERALLY SPONSORED 52 is installed on the first pallet piece frame 50 by pin, and described three Individual first pallet piece 51 and three the first STATEMENT OF FEDERALLY SPONSOREDs 52 are set in distance in a circumferential direction, and first pallet piece 51 includes the One end 510, the second end 511 and the first installation portion 512 being arranged between first end 510 and the second end 511, it is described First installation portion 512 of the first pallet piece 51 is provided with the first mounting hole 514 for mounting pin, in the present embodiment, each The ratchet portion 513 being engaged with the first ratchet 53 is equipped with the outer wall of the second end 511 of first pallet piece 51, certainly at it In his embodiment, can also the first pallet piece of only one of which 51 the second end 511 outer wall at be provided with and the first ratchet 53 The ratchet portion 513 being engaged, or only two the first pallet pieces 51 the second end 511 outer wall at be provided with and the first ratchet The 53 ratchet portions 513 being engaged, can equally realize the utility model.First STATEMENT OF FEDERALLY SPONSORED 52 includes the 3rd end 520, the Four ends 521 and the second installation portion 522 being arranged between the 3rd end 520 and the 4th end 521, first STATEMENT OF FEDERALLY SPONSORED 52 The second installation portion 522 be provided with the second mounting hole 523 for mounting pin, the second end 511 of first pallet piece 51 sets There is balancing weight 515, the 3rd end 520 of first STATEMENT OF FEDERALLY SPONSORED 52 is provided with balancing weight 524, along the first ratchet described in radial direction The second end 511 of part 51 is limited in the inner side of the 3rd end 520 of the first STATEMENT OF FEDERALLY SPONSORED 52, along the first pallet piece described in radial direction 51 first ends 510 are limited in the inner side of the 4th end 521 of first STATEMENT OF FEDERALLY SPONSORED 52, so set and are advantageous in that not only Pallet piece can produce centrifugal force, and STATEMENT OF FEDERALLY SPONSORED can also produce centrifugal force, so as to substantially increase the centrifugal force of centrifugal mechanism so that whole The more miniaturization that individual centrifugal mechanism can be set, while the centrifugal mechanism of this kind of structure can set more centrifugal ratchet number Amount, so that stability is higher during whole centrifugal mechanism work.It is provided with the first pallet piece frame 50 for controlling first The elastic component 54 of the initial position of pallet piece 51, the elastic component 54 can be torsion spring, spring or spring leaf, certainly other real Apply in mode, the elastic component 54 may be mounted on the first pallet piece 51 or in the first STATEMENT OF FEDERALLY SPONSORED 52, can equally realize this Utility model.The mating surface of the STATEMENT OF FEDERALLY SPONSORED 52 of first pallet piece 51 and first is set in involute shape or arc shaped, is so set Put and be advantageous in that：Can be consistent the swing angle of pallet piece and the swing angle of STATEMENT OF FEDERALLY SPONSORED.

The second automatic centrifugation shifter 6 includes the second pallet piece frame 60, several second pallet pieces 61, several second The ratchet 63 of STATEMENT OF FEDERALLY SPONSORED 62 and second, the second pallet piece frame 60 includes：Circular base portion 600 and certainly annular shape base portion 600 Several mounting seats that inwall extends internally, the pallet piece 61 of the second STATEMENT OF FEDERALLY SPONSORED 62 and second is respectively arranged in mounting seat.When So in other embodiments, it is not provided with the second STATEMENT OF FEDERALLY SPONSORED 62 or second STATEMENT OF FEDERALLY SPONSORED 62 or only setting one second is only set Pallet piece 61, can equally realize the utility model.The second pallet piece frame 60 is arranged in wheel hub 3, second ratchet 63 are arranged at the excircle of gear ring 41 and are integrally formed with gear ring 41.It is provided with the second pallet piece frame 60 for controlling The elastic component 64 of the initial position of second pallet piece 61, the elastic component 64 can be torsion spring, spring or spring leaf, certainly at other Embodiment in, the elastic component 64 may be mounted on the second pallet piece 61 or in the second STATEMENT OF FEDERALLY SPONSORED 62, equally can be real Existing the utility model.The STATEMENT OF FEDERALLY SPONSORED 62 of second pallet piece 61 and second is installed on the second pallet piece frame 60 by pin, institute State three the second pallet pieces 61 and three the second STATEMENT OF FEDERALLY SPONSOREDs 62 are set in distance in a circumferential direction, second pallet piece 61 is wrapped Include：Fifth end 610, the 6th end 611 and the 3rd installation portion being arranged between the end 611 of fifth end 610 and the 6th 612, the 3rd installation portion 612 of second pallet piece 61 is provided with the 3rd mounting hole 614 for mounting pin, in present embodiment In, the ratchet portion 613 being engaged with the second ratchet 63 is equipped with the inwall of the second end 611 of each second pallet piece 61, Certainly in other embodiments, can also the second pallet piece of only one of which 61 the second end 611 inwall at be provided with and the The ratchet portion 613 that two ratchets 63 are engaged, or only two the second pallet pieces 61 the second end 611 inwall at be provided with The ratchet portion 613 that second ratchet 63 is engaged, can equally realize the utility model.Second STATEMENT OF FEDERALLY SPONSORED 62 includes the 7th end Portion 620, the 8th end 621 and the 4th installation portion 622 being arranged between the 7th end 620 and the 8th end 621, described second 4th installation portion of STATEMENT OF FEDERALLY SPONSORED 62 is provided with the 4th mounting hole 623 for mounting pin, the fifth end of second pallet piece 61 610 are provided with balancing weight 615, and the 8th end 621 of second STATEMENT OF FEDERALLY SPONSORED 62 is provided with balancing weight 624, along described in radial direction the The fifth end 610 of two pallet pieces 61 is limited in the inner side of the end 621 of the second STATEMENT OF FEDERALLY SPONSORED 62 the 8th, along described in radial direction second 6th end 611 of pallet piece 61 is limited in the inner side of the end 620 of the second STATEMENT OF FEDERALLY SPONSORED 62 the 7th, so sets and is advantageous in that not But pallet piece can produce centrifugal force, STATEMENT OF FEDERALLY SPONSORED can also produce centrifugal force, so as to substantially increase the centrifugal force of centrifugal mechanism so that The more miniaturization that whole centrifugal mechanism can be set, while the centrifugal mechanism of this kind of structure can set more centrifugal ratchet Quantity, so that stability is higher during whole centrifugal mechanism work.The cooperation of the STATEMENT OF FEDERALLY SPONSORED 62 of second pallet piece 61 and second Face is set in involute shape or arc shaped, so as to make the pivot angle of the second pallet piece 61 and the pivot angle of the second STATEMENT OF FEDERALLY SPONSORED 62 keep one Cause.Certainly in other implementations, automatic centrifugation gearshift it is also possible that structure, one end of the STATEMENT OF FEDERALLY SPONSORED It is flexibly connected with adjacent one of pallet piece, the other end of the STATEMENT OF FEDERALLY SPONSORED connects with adjacent another pallet piece activity Connect, i.e., the pallet piece composition that STATEMENT OF FEDERALLY SPONSORED can be adjacent with two respectively by way of the bending of two ends is flexibly connected or STATEMENT OF FEDERALLY SPONSORED is straight Connected the pallet piece composition for selling adjacent with two to be flexibly connected, now STATEMENT OF FEDERALLY SPONSORED plays linkage equivalent to balancing pull rod, together Sample can realize the utility model.

One end of the central shaft 1 is provided with first and tight part 10, and the other end of the central shaft 1 is provided with second and tightly part 11, described first is simultaneously tightly provided with bearing or roller between part 10 and power input 2, between the power input 2 and wheel hub 3 Provided with bearing or roller, bearing or roller are provided between the wheel hub 3 and second and tight part 11.

The operation principle of third gear fully-automatic gearbox is in the utility model：First freewheel clutch 7 and second surmount from Clutch 8 is normally open, i.e., power input 2 remains engagement with gear ring 41, and planet carrier 40 is protected all the time with wheel hub 3 Engagement is held, wheel hub 3 is that the speed changer in power output member, the utility model realizes three class gear shift altogether, during one grade of low speed, is moved Power is inputted by power input 2, and because power input 2 is meshed with gear ring 41, therefore power is transferred to gear ring 41, passes through row The transmission of star-wheel 42, gear ring 41 delivers power to planet carrier 40, and because planet carrier 40 is meshed with wheel hub 3, therefore power is most Wheel hub 3 is transferred to eventually and power output is carried out by wheel hub 3, during two grades of middling speeds, with the lifting of the speed of power input 2, wheel hub 3 Speed also with quickening, when accelerating to a certain extent, the second automatic centrifugation shifter 6 in wheel hub 3 works, second from The balancing weight end of second pallet piece 61 of dynamic centrifugation shifter 6 is moved along the direction away from axle center under the influence of centrifugal force, Because the balancing weight and detent portions of the second pallet piece 61 are not arranged at the two ends of the second pallet piece 61, based on lever principle, The ratchet portion end of two pallet pieces 61 is moved to axis direction, so as to be meshed with the second ratchet 63 on gear ring 41, second is automatic When centrifugal mechanism 6 works, the second freewheel clutch 8 is in servo-actuated state, and power is entered by power input 2, because power is defeated Enter part 2 to be meshed with gear ring 41, therefore power is transferred to gear ring 41, because gear ring 41 passes through the second automatic centrifugation mechanism 6 and wheel Hub 3 is meshed, therefore power is ultimately transferred to wheel hub 3 and carries out power output by wheel hub 3, except above-mentioned during certain two grades of middling speeds Drive path outside can also use following path：During two grades of middling speeds, the first automatic centrifugation mechanism 5 works, the first automatic centrifugation The balancing weight of first pallet piece 51 produces centrifugal force and moved along the direction away from axle center in shifter 5, due to the first pallet piece 51 ratchet portion is installed on same one end with balancing weight, therefore, and ratchet portion is also moved along the direction away from axle center, so that defeated with power The first ratchet 53 entered in part 2 is meshed, when the first automatic centrifugation mechanism works, and the first freewheel clutch 7 is in servo-actuated state, Power is inputted by power input 2, because power input 2 is meshed with planet carrier 40, therefore power is passed by power input 2 Planet carrier 40 is defeated by, because planet carrier 40 is meshed with wheel hub 3, therefore power is ultimately transferred to wheel hub 3 and enters action by wheel hub 3 Power is exported, during third gear high speed, when the speed of power input 2 is lifted again, the first automatic centrifugation mechanism 5 and second it is automatic from Heart shifter 6 works simultaneously, and the balancing weight of first pallet piece 51 produces centrifugal force along far in the first automatic centrifugation shifter 5 The direction motion of the off-axis heart, because ratchet portion and the balancing weight of the first pallet piece 51 are installed on same one end, therefore, ratchet portion also edge Direction away from axle center is moved, so that be meshed with the first ratchet 53 in power input 2, the second automatic centrifugation shifter The balancing weight end of 6 the second pallet piece 61 is moved along the direction away from axle center under the influence of centrifugal force, due to the second pallet piece 61 balancing weight and detent portions is not arranged at the two ends of the second pallet piece 61, based on lever principle, the spine of the second pallet piece 61 Claw end is moved to axis direction, so as to be meshed with the second ratchet 63 on gear ring 41, power is entered by power input 2, By the transmission of the first automatic centrifugation mechanism, the power input 2 is meshed with planet carrier 40, therefore power is inputted by power Part 2 passes to planet carrier 40, by the transmission of planetary gear 42, and planet carrier 40 imparts power to gear ring 41, automatic by second The transmission of centrifugal mechanism, the gear ring 41 is meshed with wheel hub 3, therefore power is transferred to wheel hub 3 by gear ring 41 and entered by wheel hub 3 Action edge is exported.Third gear fully-automatic gearbox in the utility model can reduce the requirement to stepping on frequency when medium-to-high grade, for example： In present embodiment, it is assumed that the slowest ratio in the present embodiment is set into 2.25:1, the fast ratio between adjacent two grades is 1.5: 1.The working speed that the ratchet of first automatic centrifugation mechanism is opened is 135 revs/min, and the ratchet of the second automatic centrifugation mechanism is opened Working speed be 202.5 revs/min, then during one-level low or first gear when input component input speed be 135 revs/min when, second The speed of automatic centrifugation ratchet and the first automatic centrifugation ratchet is 90 revs/min, and the ratchet of respectively less than automatic centrifugation mechanism is beaten 135 revs/min of the working speed opened, the ratchet of automatic centrifugation mechanism can not be opened, and now output speed is 90 revs/min.When When the input speed of input component mentions 202.5 revs/min, the speed of the second automatic centrifugation ratchet and the first automatic centrifugation ratchet is equal For 135 revs/min, now the first automatic centrifugation ratchet is opened, and the second automatic centrifugation ratchet realizes two grades still in closed mode Mid ranger, output speed now is 135 revs/min.Ratchet of the input component now directly with the first automatic centrifugation mechanism is nibbled Close, 202.5 revs/min of the input speed of input component, much larger than the working speed 135 of the ratchet opening of the first automatic centrifugation mechanism Rev/min, it is possible to the input speed of input component is reduced, that is, can reduce and trample frequency.In the first automatic centrifuge Under the working condition that the ratchet of structure is opened, when input speed increases again to 202.5 revs/min, the second automatic centrifugation ratchet and The speed of first automatic centrifugation ratchet is 202.5 revs/min, and now the second automatic centrifugation ratchet is opened, the first automatic centrifugation Ratchet realizes third gear high speed gear shift still in open mode.Output speed now is 202.5 revs/min.Input component now Ratchet directly with the first automatic centrifugation mechanism is engaged, and the first automatic centrifugation mechanism drives gear ring to operate by planet carrier, input 202.5 revs/min of the input speed of part, the running speed of gear ring is 303.75 revs/min, much larger than the second automatic centrifugation mechanism Ratchet open 202.5 revs/min of working speed, it is possible to reduce the input speed of input component, that is, can reduce Trample frequency.

In summary, in the utility model third gear fully-automatic gearbox compact conformation, easy for installation, transmission efficiency, Gear shift is firm, speed change is stable, and the speed changer in the utility model can reduce the requirement to stepping on frequency when medium-to-high grade in addition, so that It must ride lighter.

Principle and its effect that the above embodiments only illustrative the utility model is created, and the reality that part is used Example is applied, not for limitation the utility model；It should be pointed out that for the person of ordinary skill of the art, not departing from this On the premise of utility model creates design, various modifications and improvements can be made, these belong to protection of the present utility model Scope.

Claims (10)

1. a kind of third gear fully-automatic gearbox, it is characterised in that including：Central shaft, power input and wheel hub, the wheel hub is Power output member, is provided with gear between the central shaft and wheel hub, the gear includes：Planetary transmission, One automatic centrifugation shifter and the second automatic centrifugation shifter, the planetary transmission include：Gear ring, centre wheel, planet Frame and planetary gear, the centre wheel are integrally formed or are fixedly connected with central shaft, and the central shaft is mutually fixed with vehicle frame, the tooth The first freewheel clutch is provided between circle and power input, the second freewheel clutch is provided between the planet carrier and wheel hub, The first automatic centrifugation shifter includes the first pallet piece frame, the first ratchet and at least one first pallet piece, described the One pallet piece is installed on the first pallet piece frame, and first pallet piece sets up and is placed on planet carrier, and first ratchet is set At the inwall of power input, the second automatic centrifugation shifter includes the second pallet piece frame, the second ratchet and at least One the second pallet piece, second ratchet is installed on the second pallet piece frame, and second pallet piece sets up and is placed in wheel hub, Second ratchet is arranged on gear ring.

2. a kind of third gear fully-automatic gearbox as claimed in claim 1, it is characterised in that：The first automatic centrifugation gear shift machine Structure also includes at least one first STATEMENT OF FEDERALLY SPONSORED, and first pallet piece is installed on the first pallet piece frame by the first connector, First STATEMENT OF FEDERALLY SPONSORED is installed on the first pallet piece frame by the second connector, and first pallet piece and the first STATEMENT OF FEDERALLY SPONSORED exist It is set in distance on circumferencial direction, first pallet piece includes first end, the second end and is arranged at first end and the It is provided with and matches with the first ratchet at the first installation portion between two ends, the outer wall of the second end of at least one the first pallet piece The ratchet portion of conjunction, the first installation portion of first pallet piece is provided with the first mounting hole for being used for installing the first connector, described First STATEMENT OF FEDERALLY SPONSORED includes the 3rd end, the 4th end and the second installation portion being arranged between the 3rd end and the 4th end, institute The second installation portion for stating the first STATEMENT OF FEDERALLY SPONSORED is provided with the second mounting hole for being used for installing the second connector, the of first pallet piece Two ends and/or the 3rd end of the first STATEMENT OF FEDERALLY SPONSORED be provided with balancing weight, the first pallet piece frame or in the first STATEMENT OF FEDERALLY SPONSORED or Elastic component for controlling the first pallet piece initial position is installed, along the first STATEMENT OF FEDERALLY SPONSORED described in radial direction on the first pallet piece The 3rd end be limited in the first pallet piece the second end inner side, along the first STATEMENT OF FEDERALLY SPONSORED described in radial direction the 4th end limit First is limited in positioned at the inner side of the first pallet piece first end or along the first end of the first pallet piece described in radial direction The inner side of 4th end of moving part, the second end of first pallet piece are limited in the inner side of the end of the first STATEMENT OF FEDERALLY SPONSORED the 3rd.

3. a kind of third gear fully-automatic gearbox as claimed in claim 1, it is characterised in that：The second automatic centrifugation gear shift machine Structure also includes at least one second STATEMENT OF FEDERALLY SPONSORED, and second pallet piece is installed on the second ratchet fixed mount by the 3rd connector On, second STATEMENT OF FEDERALLY SPONSORED is installed on the second ratchet fixed mount by the 4th connector, second pallet piece and second Moving part is set in distance in a circumferential direction, and second pallet piece includes：Fifth end, the 6th end and it is arranged at the 5th end It is provided with and the second spine at the 3rd installation portion between portion and the 6th end, the inwall of the 6th end of at least one the second pallet piece The ratchet portion being engaged is taken turns, the 3rd installation portion of second pallet piece, which is provided with, is used for the 3rd installation for installing the 3rd connector Hole, second STATEMENT OF FEDERALLY SPONSORED includes the 7th end, the 8th end and the 4th peace being arranged between the 7th end and the 8th end Dress portion, the 4th installation portion of second STATEMENT OF FEDERALLY SPONSORED is provided with the 4th mounting hole for being used for installing the 4th connector, second spine 8th end of the fifth end of bluff piece and/or the second STATEMENT OF FEDERALLY SPONSORED is provided with balancing weight, along the second pallet piece described in radial direction Fifth end is limited in the inner side of the 8th end of the second STATEMENT OF FEDERALLY SPONSORED, the 6th end of second pallet piece and is limited in second The inner side of the end of moving part the 7th is limited in the end of the second pallet piece the 5th along the 8th end of the second STATEMENT OF FEDERALLY SPONSORED described in radial direction The inner side in portion, the 7th end of second STATEMENT OF FEDERALLY SPONSORED are limited in the inner side of the 6th end of the second pallet piece, second spine Elasticity for controlling the second pallet piece initial position is installed on pawl fixed mount or in the second STATEMENT OF FEDERALLY SPONSORED or on the second pallet piece Part.

4. a kind of third gear fully-automatic gearbox as claimed in claim 1, it is characterised in that：The first automatic centrifugation gear shift machine Structure also includes at least one first STATEMENT OF FEDERALLY SPONSORED, and first pallet piece is installed on the first pallet piece frame by the first connector, One end of first STATEMENT OF FEDERALLY SPONSORED is flexibly connected with the pallet piece of one of them adjacent first, the other end of first STATEMENT OF FEDERALLY SPONSORED It is flexibly connected with the pallet piece of another adjacent first, between first pallet piece and the first STATEMENT OF FEDERALLY SPONSORED are in a circumferential direction Every setting, first pallet piece includes first end, the second end and be arranged between first end and the second end the One installation portion, the second end of first pallet piece is provided with outside balancing weight, the second end of at least one the first pallet piece Provided with the ratchet portion being engaged with the first ratchet at wall, the first installation portion of first pallet piece, which is provided with, to be used to install the first company Elastic component for controlling pallet piece initial position is installed on the first mounting hole of fitting, the first pallet piece frame.

5. a kind of third gear fully-automatic gearbox as claimed in claim 1, it is characterised in that：The second automatic centrifugation gear shift machine Structure also includes at least one second STATEMENT OF FEDERALLY SPONSORED, and second pallet piece is installed on the second pallet piece frame by the 3rd connector, One end of second STATEMENT OF FEDERALLY SPONSORED is flexibly connected with the pallet piece of one of them adjacent second, second STATEMENT OF FEDERALLY SPONSORED it is another End is flexibly connected with the pallet piece of another adjacent second, and second pallet piece and the second STATEMENT OF FEDERALLY SPONSORED are in a circumferential direction It is arranged at intervals, second pallet piece includes fifth end, the 6th end and is arranged between fifth end and the 6th end Provided with the ratchet portion being engaged with the second ratchet at 3rd installation portion, the inwall of the 6th end of at least one the second pallet piece, 3rd installation portion of second pallet piece is provided with the 3rd mounting hole for being used for installing the 3rd connector, second pallet piece Fifth end is provided with the elastic component being provided with balancing weight, the second pallet piece frame for controlling pallet piece initial position.

6. a kind of third gear fully-automatic gearbox as described in claim 2 or 4, it is characterised in that：The first pallet piece frame bag Include：Several mounting seats that the outer wall of circular base portion and certainly circular base portion stretches out, first pallet piece is installed on Fill on seat.

7. a kind of third gear fully-automatic gearbox as described in claim 3 or 5, it is characterised in that：The second pallet piece frame bag Include：Several mounting seats that the inwall of circular base portion and certainly circular base portion extends internally, second pallet piece is installed on Fill on seat.

8. a kind of third gear fully-automatic gearbox as claimed in claim 2, it is characterised in that：First pallet piece and first The mating surface of moving part is set in involute shape or arc shaped,

9. a kind of third gear fully-automatic gearbox as claimed in claim 3, it is characterised in that：Second pallet piece and second The mating surface of moving part is set in involute shape or arc shaped.

10. a kind of third gear fully-automatic gearbox as claimed in claim 1, it is characterised in that：One end of the central shaft is provided with First and tight part, the other end of the central shaft is provided with second and tight part, and described first simultaneously tightly sets between part and power input There are bearing or roller, bearing or roller are provided between the power input and wheel hub, between the wheel hub and second and tight part Provided with bearing or roller.