CN206398022U - A kind of centre wheel fixes single-wheel and directly drives multi gear fully-automatic gearbox - Google Patents

Abstract

Single-wheel, which is fixed, the utility model discloses a kind of centre wheel directly drives multi gear fully-automatic gearbox, including：Central shaft, wheel hub and gear, the gear include at least two sets planetary transmissions and at least a set of automatic centrifugation shifter, and often covering planetary transmission includes：Planet carrier, planetary gear, gear ring and centre wheel, in per two sets of adjacent planetary transmissions, planet carrier one sub-assembly of formation of the gear ring of wherein a set of planetary transmission and another set of planetary transmission, the planet carrier of starting set planetary transmission is fixedly connected or is integrally formed with central shaft, often set automatic centrifugation shifter includes pallet piece frame, ratchet and at least one pallet piece, the pallet piece sets up and is placed in wheel hub, the ratchet is arranged on sub-assembly or gear ring, it is provided between the planet carrier and wheel hub between freewheel clutch or the sub-assembly and wheel hub and is provided with freewheel clutch, speed changer in the utility model can reduce the requirement to stepping on frequency when medium-to-high grade.

Description

A kind of centre wheel fixes single-wheel and directly drives multi gear fully-automatic gearbox

【Technical field】

The utility model is related to technical field of bicycles, and in particular to it is full-automatic that multi gear is directly driven in a kind of centre wheel fixation single-wheel Speed changer.

【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 top gear, 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 that providing a kind of centre wheel required stepping on frequency that reduces consolidates Order wheel directly drives multi gear fully-automatic gearbox.

To achieve the above object, the technical scheme that the utility model is taken is：A kind of centre wheel fixes single-wheel and directly drives multi gear Fully-automatic gearbox, including：Central shaft, wheel hub and the gear being arranged between central shaft and wheel hub, the central shaft is Power input, the wheel hub is power output member, and the gear includes at least two sets planetary transmissions and at least a set of Automatic centrifugation shifter, often covering planetary transmission includes：Planet carrier, planetary gear, gear ring and centre wheel, the centre wheel are arranged It is fixedly connected on central shaft and with vehicle frame, in every two sets of adjacent planetary transmissions, wherein the gear ring of a set of planetary transmission With planet carrier one sub-assembly of formation of another set of planetary transmission, the planet carrier of starting set planetary transmission is fixed with central shaft Connect or be integrally formed, often covering automatic centrifugation shifter includes pallet piece frame, ratchet and at least one pallet piece, the ratchet Part is installed on pallet piece frame, and the pallet piece is set up and is placed in wheel hub, and the ratchet is arranged on sub-assembly or on gear ring, institute State to be provided between freewheel clutch or the sub-assembly and wheel hub between planet carrier and wheel hub and be provided with freewheel clutch.

Preferably, a kind of centre wheel fixation single-wheel in the utility model is directly driven multi gear fully-automatic gearbox and further set For：The often set automatic centrifugation gearshift also includes at least one STATEMENT OF FEDERALLY SPONSORED, and the pallet piece is installed by the first connector In on ratchet fixed mount, the STATEMENT OF FEDERALLY SPONSORED is installed on ratchet fixed mount by the second connector, the pallet piece and STATEMENT OF FEDERALLY SPONSORED It is set in distance in a circumferential direction, the pallet piece includes：First end, the second end and it is arranged at first end and second Provided with the ratchet being engaged with ratchet at the first installation portion between end, the inwall of the second end of at least one pallet piece Portion, the first installation portion of the pallet piece is provided with the first mounting hole for being used for installing the first connector, and the STATEMENT OF FEDERALLY SPONSORED includes the Three ends, the 4th end and the second installation portion being arranged between the 3rd end and the 4th end, the second peace of the STATEMENT OF FEDERALLY SPONSORED Dress portion is provided with the second mounting hole for being used for installing the second connector, the first end of the pallet piece and/or the 4th of STATEMENT OF FEDERALLY SPONSORED the End is provided with balancing weight, and inner side, the institute of the 4th end of STATEMENT OF FEDERALLY SPONSORED are limited in along the first end of pallet piece described in radial direction The second end for stating pallet piece is limited in the inner side or the 4th end along STATEMENT OF FEDERALLY SPONSORED described in radial direction of the end of STATEMENT OF FEDERALLY SPONSORED the 3rd Portion is limited in the inner side of pallet piece first end, the 3rd end of the STATEMENT OF FEDERALLY SPONSORED be limited in pallet piece the second end it is interior Elastic component for controlling pallet piece initial position is installed on side, the ratchet fixed mount or in STATEMENT OF FEDERALLY SPONSORED or on pallet piece.

Preferably, a kind of centre wheel fixation single-wheel in the utility model is directly driven multi gear fully-automatic gearbox and further set For：The often set automatic centrifugation gearshift also includes at least one STATEMENT OF FEDERALLY SPONSORED, and the pallet piece is installed by the first connector In on ratchet fixed mount, one end of the STATEMENT OF FEDERALLY SPONSORED is flexibly connected with adjacent one of pallet piece, the STATEMENT OF FEDERALLY SPONSORED it is another One end is flexibly connected with another adjacent pallet piece, and the pallet piece and STATEMENT OF FEDERALLY SPONSORED are set in distance in a circumferential direction, The pallet piece includes first end, the second end and the first installation portion being arranged between first end and the second end, institute The first end for stating pallet piece is provided with balancing weight, provided with being engaged with ratchet at the inwall of the second end of at least one pallet piece Ratchet portion, the first installation portion of the pallet piece is provided with the first mounting hole for being used for installing the first connector, the pallet piece Elastic component for controlling pallet piece initial position is installed on frame.

Preferably, a kind of centre wheel fixation single-wheel in the utility model is directly driven multi gear fully-automatic gearbox and further set For：The ratchet fixed mount includes：Several mounting seats that the inwall of circular base portion and certainly circular base portion extends internally.

Preferably, a kind of centre wheel fixation single-wheel in the utility model is directly driven multi gear fully-automatic gearbox and further set For：The elastic component is torsion spring, spring or spring leaf.

Preferably, a kind of centre wheel fixation single-wheel in the utility model is directly driven multi gear fully-automatic gearbox and further set For：Described the first connector, the second connector are pin.

Preferably, a kind of centre wheel fixation single-wheel in the utility model is directly driven multi gear fully-automatic gearbox and further set For：The mating surface of the pallet piece and STATEMENT OF FEDERALLY SPONSORED is set in involute shape or arc shaped.

Preferably, a kind of centre wheel fixation single-wheel in the utility model is directly driven multi gear fully-automatic gearbox and further set For：One end of the central shaft is provided with boss, and one end of the wheel hub is provided with first and tight part, and the other end of the wheel hub is provided with Second and tight part, connected between the central shaft and first and tight part by bearing or ball, described first and tight part and wheel hub Between connected by bearing or ball, described second and tight pass through bearing between part and centre wheel or ball is connected

Compared with prior art, the utility model has the advantages that：Centre wheel in the utility model fixes single Wheel is straight to drive that multi gear fully-automatic gearbox compact conformation, easy for installation, transmission efficiency, gear shift be firm, speed change is stable, by change Set number to cover automatic centrifugation shifter in fast device, so that automatic speed-changing can be realized, by increase and decrease in gear it is automatic from The quantity of heart shifter and planetary transmission realizes multi gear speed change, and speed changer in the utility model is when medium-to-high grade in addition It can reduce to stepping on the requirement of frequency, so that it is lighter to ride.

【Brief description of the drawings】

Fig. 1 is that centre wheel fixes the front view structure that multi gear fully-automatic gearbox is directly driven in single-wheel in the utility model embodiment 1 Schematic diagram.

Fig. 2 is that centre wheel fixes the decomposition texture that multi gear fully-automatic gearbox is directly driven in single-wheel in the utility model embodiment 1 Schematic diagram.

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

Fig. 4 is the structural representation of the first automatic centrifugation gearshift mechanism in the utility model embodiment 1.

Fig. 5 is that centre wheel fixes the sectional structure that multi gear fully-automatic gearbox is directly driven in single-wheel in the utility model embodiment 2 Schematic diagram.

Fig. 6 is that centre wheel fixes the sectional structure that multi gear fully-automatic gearbox is directly driven in single-wheel in the utility model embodiment 3 Schematic diagram.

In figure：1st, central shaft, 10, boss, 20, first and tight part, 21, second and tight part, 2, wheel hub, 3, planet speed-change Device, the 30, first planetary transmission, the 300, first planet carrier, the 301, first planetary gear, the 302, first gear ring, the 303, first center Wheel, the 31, second planetary transmission, the 310, second planet carrier, the 311, second planetary gear, the 312, second gear ring, the 313, second center Wheel, 32, third planet speed changer, 320, the third line carrier, 321, the third line star-wheel, the 322, the 3rd gear ring, the 323, the 3rd center Wheel, 4, automatic centrifugation shifter, the 40, first automatic centrifugation shifter, the 400, first pallet piece frame, 4000, elastic component, 401st, the first pallet piece, 4010, first end, 4011, the second end, the 4012, first installation portion, 4013, ratchet portion, 402, One STATEMENT OF FEDERALLY SPONSORED, the 4020, the 3rd end, the 4021, the 4th end, the 4022, second installation portion, the 403, first ratchet, 41, second is automatic Centrifugation shifter, the 410, second pallet piece frame, the 411, second pallet piece, the 412, second STATEMENT OF FEDERALLY SPONSORED, the 413, second ratchet, 42, 3rd automatic centrifugation shifter, the 420, the 3rd pallet piece frame, the 421, the 3rd pallet piece, the 422, the 3rd STATEMENT OF FEDERALLY SPONSORED, the 423, the 3rd Ratchet, 5, freewheel clutch, 50, ratchet, 51, ratchet.

【Embodiment】

Multi gear is directly driven to a kind of centre wheel fixation single-wheel described in the utility model below by specific embodiment full-automatic Speed changer is described in further detail.

Embodiment 1

Join shown in Fig. 1 to Fig. 4, a kind of centre wheel fixes single-wheel and directly drives multi gear fully-automatic gearbox, including：Central shaft 1, wheel Hub 2 and the gear being arranged between central shaft 1 and wheel hub 2, the central shaft 1 are power input, and the wheel hub 2 is Power output, the gear includes at least two sets planetary transmissions and at least a set of automatic centrifugation shifter, in this reality Apply in mode, gear realizes four-speed gear shift altogether, thus gear include altogether three sets planetary transmissions 3 and three sets automatically from Heart shifter 4, certainly in other implementations, the quantity of planetary transmission and automatic centrifugation shifter can be according to tool Depending on body demand.

The planetary transmission 3 includes：The first planetary transmission 30, the second planetary transmission 31 and the 3rd being arranged side by side Planetary transmission 32, first planetary transmission 30 includes：First planet carrier 300, the first planetary gear 301, the first gear ring 302 And first centre wheel 303, second planetary transmission 31 includes：Second planet carrier 310, the second planetary gear 311, the second gear ring 312 and second centre wheel 313, the third planet speed changer 32 includes：The third line carrier 320, the third line star-wheel the 321, the 3rd The centre wheel 323 of gear ring 322 and the 3rd, first centre wheel 303, the second centre wheel 313 and the 3rd centre wheel 323 are integrally formed A single piece is formed, the single piece is sheathed on central shaft 1 and is fixedly connected with vehicle frame, in the present embodiment, the first planet Speed changer is starting set planetary transmission, and so-called starting set planetary transmission is the planetary transmission that power is reached at first, described Is connected between the first planet carrier 300 and central shaft 1 of starting set planetary transmission by spline, first gear ring 302 and the Two planet carriers 310 are integrally formed to form the first sub-assembly, and second gear ring 312 is integrally formed to be formed with the third line carrier 320 Second sub-assembly, is provided with freewheel clutch 5 between first planet carrier 300 and wheel hub 2, the freewheel clutch 5 includes spine Pawl 50 and ratchet 51, in the present embodiment, the ratchet 50 are arranged on the first planet carrier 300, and the ratchet 51 is arranged at In wheel hub 2, certainly in other implementations, the ratchet may also be arranged in wheel hub 2, and the ratchet may also set up in On one planet carrier 300.

The automatic centrifugation shifter 4 includes：First automatic centrifugation shifter 40, the second automatic centrifugation shifter 41 and the 3rd automatic centrifugation shifter 42, the first automatic centrifugation shifter 40 include the first pallet piece frame 400, three First pallet piece 401, three the first STATEMENT OF FEDERALLY SPONSOREDs 402 and the first ratchets 403, certainly in other embodiments, are not provided with linkage Part 402 only sets a STATEMENT OF FEDERALLY SPONSORED 402 or only sets a pallet piece 401, can equally realize the utility model.Described One pallet piece frame 400 is arranged in wheel hub 2 and is integrally formed with wheel hub 2, wherein the first ratchet 403 is arranged at by the first gear ring 302 and second on the first sub-assembly that is constituted of planet carrier 310, is provided with the first pallet piece frame 400 for controlling the The elastic component 4000 of the initial position of one pallet piece 401, the elastic component 4000 can be torsion spring, spring or spring leaf, exist certainly In other embodiments, the elastic component 4000 may be mounted on the first pallet piece 401 or in the first STATEMENT OF FEDERALLY SPONSORED 402, together Sample can realize the utility model.The STATEMENT OF FEDERALLY SPONSORED 402 of first pallet piece 401 and first is installed on the first pallet piece by pin On frame 400, three first pallet pieces 401 and three the first STATEMENT OF FEDERALLY SPONSOREDs 402 are set in distance in a circumferential direction, and described One pallet piece 401 includes：First end 4010, the second end 4011 and be arranged at first end 4010 and the second end 4011 it Between the first installation portion 4012, first installation portion 4012 be provided with for mounting pin the first mounting hole, in present embodiment In, the ratchet portion being engaged with the first ratchet 403 is equipped with the inwall of the second end 4011 of each first pallet piece 401 4013, certainly in other embodiments, can also the first pallet piece of only one of which 401 the second end 4011 inwall at set Have a ratchet portion 4013 being engaged with the first ratchet 403, or only two the first pallet pieces 401 the second end 4011 it is interior Provided with the ratchet portion 4013 being engaged with the first ratchet 403 at wall, the utility model can be equally realized.First STATEMENT OF FEDERALLY SPONSORED 402 include the 3rd end 4020, the 4th end 4021 and be arranged between the 3rd end 4020 and the 4th end 4021 second Installation portion 4022, the second installation portion 4022 of first STATEMENT OF FEDERALLY SPONSORED 402 is provided with the second mounting hole for mounting pin, and described the 4th end 4021 of the STATEMENT OF FEDERALLY SPONSORED 402 of first end 4010 and first of one pallet piece 401 is equipped with balancing weight, along radial direction The first end 4010 of first pallet piece 401 is limited in the inner side of the end 4021 of the first STATEMENT OF FEDERALLY SPONSORED 402 the 4th, along radius side The inner side of the end 4020 of the first STATEMENT OF FEDERALLY SPONSORED 402 the 3rd is limited in the second end 4011 of first pallet piece 401, is so set Put and be advantageous in that not only pallet piece can produce centrifugal force, STATEMENT OF FEDERALLY SPONSORED can also produce centrifugal force, so as to substantially increase centrifuge The centrifugal force of structure so that the more miniaturization that whole centrifugal mechanism can be set, while the centrifugal mechanism of this kind of structure can be set More centrifugal ratchet quantity is put, so that stability is higher during whole centrifugal mechanism work.First pallet piece 401 and The mating surface of one STATEMENT OF FEDERALLY SPONSORED 402 is set in involute shape or arc shaped, so as to make pivot angle and the second spine of the first pallet piece 401 The pivot angle of bluff piece 411 is consistent.The structure of the second automatic centrifugation shifter 41 and the first automatic centrifugation shifter 40 structure is identical, including the second pallet piece frame 410, three the second pallet piece 411, three the second STATEMENT OF FEDERALLY SPONSOREDs 412 and the second spine Wheel 413, the second pallet piece frame 410 is arranged in wheel hub 2 and is integrally formed with wheel hub 2, and second ratchet 413 is arranged at On the second sub-assembly that the second gear ring 312 is constituted with the third line carrier 320, the 3rd automatic centrifugation shifter 42 Structure is identical with the structure of the first automatic centrifugation shifter 40, including the 3rd pallet piece frame 420, three the 3rd pallet pieces 421, Three the 3rd STATEMENT OF FEDERALLY SPONSOREDs 422 and the 3rd ratchet 423, the 3rd pallet piece frame 420 are arranged in wheel hub 2 and integral with wheel hub 2 Shaping, the 3rd ratchet 423 is arranged on the 3rd gear ring 322.Certainly in other implementations, automatic centrifugation gearshift machine Structure it is also possible that structure, one end of the STATEMENT OF FEDERALLY SPONSORED is flexibly connected with adjacent one of pallet piece, the linkage The other end of part is flexibly connected with another adjacent pallet piece, i.e., STATEMENT OF FEDERALLY SPONSORED can be by way of the bending of two ends respectively with two Individual adjacent pallet piece constitutes flexible connection or STATEMENT OF FEDERALLY SPONSORED and is directly flexibly connected by the pin pallet piece composition adjacent with two, Now STATEMENT OF FEDERALLY SPONSORED plays linkage equivalent to balancing pull rod, equally implements the utility model.

One end of the central shaft 1 is provided with boss 10, and one end of the wheel hub 2 is provided with first and tight part 20, the wheel hub 2 The other end provided with second and tight part 21, connected between the central shaft 1 and first and tight part 20 by bearing or ball, it is described First is simultaneously tightly connected between part 20 and wheel hub 2 by bearing or ball, and described second simultaneously tightly passes through axle between part 21 and centre wheel Hold or ball connection.

Centre wheel, which fixes single-wheel and directly drives the operation principle of multi gear fully-automatic gearbox, in the present embodiment is：During one grade of low speed, Ratchet in freewheel clutch is normally opened ratchet, i.e., the first planet carrier 300 remains engagement with wheel hub 2, and power is in Heart axle 1 is inputted, and because central shaft 1 is fixedly connected with the first planet carrier 300 by spline, therefore power passes to the first planet carrier 300, because the first planet carrier 300 is meshed with wheel hub 2, therefore power is ultimately transferred to wheel hub 2 and to enter action edge by wheel hub 2 defeated Go out, with the lifting of the rotating speed of central shaft 1, the balancing weight end of the first pallet piece 401 of the first automatic centrifugation shifter 40 from Moved in the presence of mental and physical efforts along the direction away from axle center, because the balancing weight and detent portions of the first pallet piece 401 are not arranged at The two ends of first pallet piece 401, based on lever principle, the ratchet portion end of the first pallet piece 401 is moved to axis direction, so that with The first ratchet 403 on first sub-assembly is meshed, the first automatic centrifugation shifter 40 work when, freewheel clutch be in Dynamic state, power is inputted by central shaft 1, because central shaft 1 is fixedly connected with the first planet carrier 300, therefore power is transferred to the One planet carrier 300, by the transmission of the first planetary gear 301, the first planet carrier 300 delivers power to the first gear ring 302, due to First gear ring 302 and the second planet carrier 310 are integrally formed to form the first sub-assembly, and the first sub-assembly is meshed with wheel hub 2 again, because This power is ultimately transferred to wheel hub 2 and carries out power output by wheel hub 2, so that two grades of mid rangers are realized, when the rotating speed of central shaft 1 When being lifted again, the balancing weight end of the second pallet piece 411 of the second automatic centrifugation shifter 41 edge under the influence of centrifugal force Direction away from axle center is moved, because the balancing weight and detent portions of the second pallet piece 411 are not arranged at the second pallet piece 411 Two ends, based on lever principle, the ratchet portion end of the second pallet piece 411 is moved to axis direction so that with the second sub-assembly Second ratchet 413 is meshed, when the second automatic centrifugation shifter 41 works, the first automatic centrifugation shifter and overdrive clutch Device is in servo-actuated state, and power is inputted by central shaft 1, because central shaft 1 is fixedly connected with the first planet carrier 300, therefore power The first planet carrier 300 is transferred to, by the transmission of the first planetary gear 301, the first planet carrier 300 delivers power to the first gear ring 302, because the first gear ring 302 and two planet carriers are integrally formed, therefore power is transferred to the second planet carrier 310, passes through the second row The transmission of star-wheel 311, the second planet carrier 310 delivers power to the second gear ring 312, due to the second gear ring 312 and third planet Frame 320 is integrally formed to form the second sub-assembly, and the second sub-assembly is meshed, therefore power is ultimately transferred to wheel hub 2 again with wheel hub 2 And power output is carried out by wheel hub 2, third gear mid ranger is realized, when the rotating speed of central shaft 1 is lifted again, the 3rd automatic centrifugation is changed The balancing weight end of 3rd pallet piece 421 of gear mechanism 42 is moved along away from the direction in axle center under the influence of centrifugal force, due to the The balancing weight and detent portions of three pallet pieces 421 are not arranged at the two ends of the 3rd pallet piece 421, based on lever principle, the 3rd spine The ratchet portion end of bluff piece 421 is moved to axis direction, so as to be meshed with the 3rd ratchet 423 on the 3rd gear ring 322, the 3rd certainly When dynamic centrifugation shifter 42 works, the first automatic centrifugation shifter, the second automatic centrifugation shifter 41 and overdrive clutch Device is in servo-actuated state, and power is inputted by central shaft 1, because central shaft 1 is fixedly connected with the first planet carrier 300, therefore dynamic Power is transferred to the first planet carrier 300, by the transmission of the first planetary gear 301, and the first planet carrier 300 delivers power to the first tooth Circle 302, because the first gear ring 302 is integrally formed with the second planet carrier 310, therefore power is transferred to the second planet carrier 310, passes through The transmission of second planetary gear 311, the second planet carrier 310 delivers power to the second gear ring 312, due to the second gear ring 312 and Three planet carriers 320 are integrally formed, therefore power is transferred to the third line carrier 320, then pass through the transmission of the third line star-wheel 321, Three planet carriers 320 deliver power to the 3rd gear ring 322, and because the 3rd gear ring 322 is meshed with wheel hub 2, power is finally transmitted Power output is carried out to wheel hub 2 and by wheel hub 2.Single-wheel in the utility model directly drives multi gear fully-automatic gearbox when medium-to-high grade The requirement to stepping on frequency can be reduced, for example：Assuming that the operating rate that first, second, third automatic centrifugation shifter ratchet is opened Respectively 80 revs/min, 120 revs/min, 180 revs/min.The fast ratio of planet speed change mechanism is 1.5, when central shaft input During 70 revs/min of rotating speed, now the rotating speed of wheel hub is identical with central shaft input speed, i.e., 70 revs/min, due to first, second, 3rd automatic centrifugation shifter ratchet is all mounted on wheel hub, so first, second, third automatic centrifugation gear shift now Mechanism ratchet can not all be opened, power 1:1 is exported by wheel hub, realizes one grade of low speed.When central shaft input speed reaches 80 revs/min Zhong Shi, now the rotating speed of wheel hub also reached 80 revs/min, the first automatic centrifugation shifter ratchet open and with by the first tooth Enclose the ratchet being integrally formed with the second planet carrier on the first formed sub-assembly to be meshed, realize two grades of mid rangers.Now One gear ring and the second planet carrier are integrally formed to form 120 revs/min of the first sub-assembly rotating speed (80 revs/min of * speed compare 1.5), far 80 revs/min of the working speed opened more than the ratchet of the first automatic centrifugation mechanism, it is possible to which the input for reducing central shaft turns Speed, that is, it can reduce and trample frequency.Under the working condition that the ratchet of the first automatic centrifugation mechanism is opened, when central shaft is defeated When entering rotating speed and increasing again to 80 revs/min, the rotating speed of wheel hub is 120 revs/min (80 revs/min of * speed compare 1.5), second from Dynamic centrifugation shifter ratchet is opened and is integrally formed with the second gear ring and the third line carrier on the second formed sub-assembly Ratchet is meshed, and realizes third gear mid ranger, and now the second gear ring is integrally formed the first formed sub-assembly with the third line carrier 180 revs/min of rotating speed (120 revs/min of * speed compare 1.5), much larger than the working speed of the ratchet opening of the second automatic centrifugation mechanism 120 revs/min, it is possible to reduce the input speed of central shaft, that is, it can reduce and trample frequency.First, second certainly Under the working condition that the ratchet of dynamic centrifugal mechanism is opened, when central shaft input speed increases again to 80 revs/min, wheel hub Rotating speed be 180 revs/min (120 revs/min of * speed compare 1.5), the 3rd automatic centrifugation shifter ratchet open and with the 3rd gear ring Ratchet be meshed, now 270 revs/min of the rotating speed of the 3rd gear ring (180 revs/min of * speed compare 1.5), automatic much larger than the 3rd 180 revs/min of the working speed that the ratchet of centrifugal mechanism is opened, it is possible to reduce the input speed of central shaft, that is, can Frequency is trampled to reduce.By a series of raising input speeds, automatic centrifugation gear shift is realized, reduction is trampled frequency, improved again Input speed, realizes higher level automatic centrifugation gear shift this automatic centrifugation gear shift circulation again.

In summary, multi gear fully-automatic gearbox compact conformation, easy for installation, transmission are directly driven in the single-wheel in the utility model Efficiency high, gear shift are firm, speed change is stable, by setting number to cover automatic centrifugation shifter in speed changer, so as to can realize complete Fluid drive, multi gear speed change is realized by increasing and decreasing the quantity of automatic centrifugation shifter and planetary transmission in gear, Speed changer in other the utility model can be reduced to stepping on the requirement of frequency when medium-to-high grade, so that it is lighter to ride.

Embodiment 2

Join shown in Fig. 5, the centre wheel in the present embodiment is fixed single-wheel and directly driven in multi gear fully-automatic gearbox and embodiment 1 Centre wheel fixation single-wheel is directly driven multi gear fully-automatic gearbox and compared, and remaining structure all same, difference is：In embodiment 1 In, altogether including three sets of automatic centrifugation shifters, freewheel clutch is disposed between the planet carrier 300 of wheel hub 2 and first, and In the present embodiment, altogether including two sets of automatic centrifugation shifters, freewheel clutch be arranged at the first sub-assembly and wheel hub 2 it Between, i.e., for embodiment 1, embodiment 2 eliminates the first automatic centrifugation shifter 40, and originally will be arranged on first Freewheel clutch 5 between planet carrier 300 and wheel hub 2 has been placed on the position for being removed the first automatic centrifugation shifter 40 Place.

Centre wheel, which fixes single-wheel and directly drives the operation principle of multi gear fully-automatic gearbox, in the present embodiment is：Freewheel clutch 5 In ratchet 50 for normally opened ratchet, i.e. the first sub-assembly all the time with wheel hub 2 keep engage, during one grade of low speed, power is by central shaft 1 Input, because central shaft 1 is fixedly connected with the first planet carrier 300, therefore power is transferred to the first planet carrier 300, passes through first The transmission of planetary gear 301, the first planet carrier 300 delivers power to the first gear ring 302, due to the first gear ring 302 and the second row Carrier 310 is integrally formed to form the first sub-assembly, and the first sub-assembly is meshed, therefore power is transferred to wheel hub 2 simultaneously again with wheel hub 2 Power output is carried out by wheel hub 2, with the lifting of the speed of central shaft 1, the second pallet piece of the second automatic centrifugation shifter 41 411 balancing weight end is moved along away from the direction in axle center under the influence of centrifugal force, due to the second pallet piece 411 balancing weight and Detent portions are not arranged at the two ends of the second pallet piece 411, based on lever principle, and the ratchet portion end of the second pallet piece 411 is to axle Heart direction is moved, so as to be meshed with the second ratchet 413 on the second sub-assembly, power is inputted by central shaft 1, due to the first row Carrier 300 is fixedly connected with central shaft 1, therefore power is transferred to the first planet carrier 300, by the transmission of the first planetary gear 301, First planet carrier 300 delivers power to the first gear ring 302, because the first gear ring 302 is integrally formed with the second planet carrier 310, Therefore power is transferred to the second planet carrier 310, and by the transmission of the second planetary gear 311, the second planet carrier 310 is delivered power to Second gear ring 312, because the second gear ring 312 is integrally formed to form the second sub-assembly with the third line carrier 320, the second sub-assembly is again It is meshed with wheel hub 2, therefore power is finally transferred to wheel hub 2 and exported by wheel hub 2, two grades of middling speeds is realized, when central shaft 1 Speed when being lifted again, the work of the balancing weight end of the 3rd pallet piece 421 of the 3rd automatic centrifugation shifter 42 in centrifugal force Moved with direction of the lower edge away from axle center, because the balancing weight and detent portions of the 3rd pallet piece 421 are not arranged at the 3rd ratchet The two ends of part 421, based on lever principle, the ratchet portion end of the 3rd pallet piece 421 is moved to axis direction so that with the 3rd gear ring The 3rd ratchet 423 on 322 is meshed, and power is inputted by central shaft 1, is fixed and connected with central shaft 1 due to the first planet carrier 300 Connect, therefore power is transferred to the first planet carrier 300, by the transmission of the first planetary gear 301, the first planet carrier 300 passes power The first gear ring 302 is defeated by, because the first gear ring 302 is integrally formed with the second planet carrier 310, therefore power is transferred to the second planet Frame 310, by the transmission of the second planetary gear 311, the second planet carrier 310 delivers power to the second gear ring 312, due to the second tooth Circle 312 is integrally formed with the third line carrier 320, therefore power is transferred to the third line carrier 320, passes through the third line star-wheel 321 Transmission, the third line carrier 320 delivers power to the 3rd gear ring 322, and because the 3rd gear ring 322 is meshed with wheel hub 2, power is most Wheel hub 2 is transferred to eventually and power output is carried out by wheel hub 2, so as to realize third gear at a high speed.

Embodiment 3

Join shown in Fig. 6, the centre wheel in the present embodiment is fixed single-wheel and directly driven in multi gear fully-automatic gearbox and embodiment 2 Centre wheel fixation single-wheel is directly driven multi gear fully-automatic gearbox and compared, and remaining structure all same, difference is：In embodiment 2 In, altogether including two sets of automatic centrifugation shifters and three sets of planetary transmissions, and in the present embodiment, altogether including it is a set of it is automatic from Heart shifter and two sets of planetary transmissions, i.e., compared to embodiment 2, multi gear automatic speed-changing is directly driven in the single-wheel in the present embodiment Device eliminates the second planetary transmission 31 and the second automatic centrifugation shifter 41 in embodiment 2.

Centre wheel, which fixes single-wheel and directly drives the operation principle of multi gear fully-automatic gearbox, in the present embodiment is：Freewheel clutch 5 In ratchet 50 for normally opened ratchet, i.e. the first sub-assembly all the time with wheel hub 2 keep engage, during one grade of low speed, power is by central shaft 1 Input, because central shaft 1 is fixedly connected with the first planet carrier 300, therefore power is transferred to the first planet carrier 300, passes through first The transmission of planetary gear 301, the first planet carrier 300 delivers power to the first gear ring 302, due to the first gear ring 302 and the third line Carrier 320 is integrally formed to form the first sub-assembly, and the first sub-assembly is meshed, therefore power is finally transferred to wheel again with wheel hub 2 Hub 2 simultaneously carries out power output by wheel hub 2.With the lifting of the rotating speed of central shaft 1, the 3rd spine of the 3rd automatic centrifugation shifter 42 The balancing weight end of bluff piece 421 is moved along the direction away from axle center under the influence of centrifugal force, due to the counterweight of the 3rd pallet piece 421 Block and detent portions are not arranged at the two ends of the 3rd pallet piece 421, based on lever principle, the ratchet portion end of the 3rd pallet piece 421 Moved to axis direction, so as to be meshed with the 3rd ratchet 423 on the 3rd gear ring 322, power is inputted by central shaft 1, due to Central shaft 1 is fixedly connected with the first planet carrier 300, therefore power is transferred to the first planet carrier 300, passes through the first planetary gear 301 Transmission, the first planet carrier 300 delivers power to the first gear ring 302, due to the first gear ring 302 and the third line carrier 320 1 It is body formed, therefore power is transferred to the third line carrier 320, by the transmission of the third line star-wheel 321, the third line carrier 320 will be dynamic Power is transferred to the 3rd gear ring 322, because the 3rd gear ring 322 is meshed with wheel hub 2, thus power be finally transferred to wheel hub 2 and by Wheel hub 2 carries out power output, realizes two grades of high speeds.

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 (8)

1. a kind of centre wheel fixes single-wheel and directly drives multi gear fully-automatic gearbox, it is characterised in that including：Central shaft, wheel hub and set The gear being placed between central shaft and wheel hub, the central shaft is power input, and the wheel hub is power output member, institute Stating gear includes at least two sets planetary transmissions and at least a set of automatic centrifugation shifter, often covers planetary transmission bag Include：Planet carrier, planetary gear, gear ring and centre wheel, the centre wheel are sheathed on central shaft and are fixedly connected with vehicle frame, per adjacent Two sets of planetary transmissions in, wherein the planet carrier formation one of the gear ring of a set of planetary transmission and another set of planetary transmission Sub-assembly, the planet carrier of starting set planetary transmission is fixedly connected or is integrally formed with central shaft, often covers automatic centrifugation gear shift machine Structure includes pallet piece frame, ratchet and at least one pallet piece, and the pallet piece is installed on pallet piece frame, and the pallet piece is set up It is placed in wheel hub, the ratchet is arranged on sub-assembly or on gear ring, freewheel clutch is provided between the planet carrier and wheel hub Or freewheel clutch is provided between the sub-assembly and wheel hub.

2. a kind of centre wheel as claimed in claim 1 fixes single-wheel and directly drives multi gear fully-automatic gearbox, it is characterised in that：It is described Often set automatic centrifugation gearshift also includes at least one STATEMENT OF FEDERALLY SPONSORED, and the pallet piece is installed on ratchet by the first connector and consolidated Determine on frame, the STATEMENT OF FEDERALLY SPONSORED is installed on ratchet fixed mount by the second connector, the pallet piece and STATEMENT OF FEDERALLY SPONSORED are in circumference side It is set in distance upwards, the pallet piece includes：First end, the second end and it is arranged between first end and the second end The first installation portion, provided with the ratchet portion being engaged with ratchet, the spine at the inwall of the second end of at least one pallet piece First installation portion of bluff piece is provided with the first mounting hole for being used for installing the first connector, and the STATEMENT OF FEDERALLY SPONSORED includes the 3rd end, the Four ends and the second installation portion being arranged between the 3rd end and the 4th end, the second installation portion of the STATEMENT OF FEDERALLY SPONSORED is provided with use In the second mounting hole for installing the second connector, the first end of the pallet piece and/or the 4th end of STATEMENT OF FEDERALLY SPONSORED are provided with and matched somebody with somebody Pouring weight, the inner side of the 4th end of STATEMENT OF FEDERALLY SPONSORED, the pallet piece are limited in along the first end of pallet piece described in radial direction The second end is limited in the inner side of the end of STATEMENT OF FEDERALLY SPONSORED the 3rd or is limited in ratchet along the 4th end of STATEMENT OF FEDERALLY SPONSORED described in radial direction The inner side of part first end, the 3rd end of the STATEMENT OF FEDERALLY SPONSORED are limited in the inner side of the second end of pallet piece, and the ratchet is consolidated Determine the elastic component for controlling pallet piece initial position is installed on frame or in STATEMENT OF FEDERALLY SPONSORED or on pallet piece.

3. a kind of centre wheel as claimed in claim 1 fixes single-wheel and directly drives multi gear fully-automatic gearbox, it is characterised in that：It is described Often set automatic centrifugation gearshift also includes at least one STATEMENT OF FEDERALLY SPONSORED, and the pallet piece is installed on ratchet by the first connector and consolidated Determine on frame, one end of the STATEMENT OF FEDERALLY SPONSORED is flexibly connected with adjacent one of pallet piece, the other end and the phase of the STATEMENT OF FEDERALLY SPONSORED Another adjacent pallet piece is flexibly connected, and the pallet piece and STATEMENT OF FEDERALLY SPONSORED are set in distance in a circumferential direction, the ratchet Part includes first end, the second end and the first installation portion being arranged between first end and the second end, the pallet piece First end be provided with balancing weight, provided with the ratchet being engaged with ratchet at the inwall of the second end of at least one pallet piece Portion, the first installation portion of the pallet piece, which is provided with the first mounting hole for being used for installing the first connector, the pallet piece frame, pacifies Equipped with the elastic component for controlling pallet piece initial position.

4. a kind of centre wheel fixes single-wheel and directly drives multi gear fully-automatic gearbox as claimed in claim 2 or claim 3, it is characterised in that： The ratchet fixed mount includes：Several mounting seats that the inwall of circular base portion and certainly circular base portion extends internally.

5. a kind of centre wheel fixes single-wheel and directly drives multi gear fully-automatic gearbox as claimed in claim 2 or claim 3, it is characterised in that： The elastic component is torsion spring, spring or spring leaf.

6. a kind of centre wheel as claimed in claim 2 fixes single-wheel and directly drives multi gear fully-automatic gearbox, it is characterised in that：It is described The first connector, the second connector be pin.

7. a kind of centre wheel as claimed in claim 2 fixes single-wheel and directly drives multi gear fully-automatic gearbox, it is characterised in that：It is described The mating surface of pallet piece and STATEMENT OF FEDERALLY SPONSORED is set in involute shape or arc shaped.

8. a kind of centre wheel as claimed in claim 1 fixes single-wheel and directly drives multi gear fully-automatic gearbox, it is characterised in that：It is described One end of central shaft is provided with boss, and one end of the wheel hub is provided with first and tight part, and the other end of the wheel hub is provided with second simultaneously Tightly part, is connected between the central shaft and first and tight part by bearing or ball, and described first simultaneously tightly leads between part and wheel hub Bearing or ball connection are crossed, described second simultaneously tightly passes through bearing or ball connection between part and centre wheel.