CN107244378A - One kind three keeps off internal speed changer - Google Patents
One kind three keeps off internal speed changer Download PDFInfo
- Publication number
- CN107244378A CN107244378A CN201710448252.4A CN201710448252A CN107244378A CN 107244378 A CN107244378 A CN 107244378A CN 201710448252 A CN201710448252 A CN 201710448252A CN 107244378 A CN107244378 A CN 107244378A
- Authority
- CN
- China
- Prior art keywords
- ratchet
- central shaft
- shifting sleeve
- pallet piece
- wheel hub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
Internal speed changer is kept off the invention discloses one kind three, including：Central shaft, wheel hub, power input, planetary transmission, gearshift and group retaining device, the wheel hub is power output member, and the central shaft is mutually fixed with vehicle frame, and the planetary transmission includes：Centre wheel, planet carrier, planetary gear and gear ring, the gearshift include：Shifting sleeve, ratchet, pallet piece frame and pallet piece, the shifting sleeve is sheathed on central shaft and formed between power input and is slidably connected, the ratchet includes the first ratchet being arranged on shifting sleeve outer circumference surface and the second ratchet being arranged in wheel hub, the pallet piece includes first end, the second end and middle installation portion, the first end is provided with the first ratchet portion being engaged with the first ratchet, the second end is provided with the second ratchet portion being engaged with the second ratchet, freewheel clutch is provided between the planet carrier and wheel hub, so as to reduce noise, resistance and manufacturing cost.
Description
【Technical field】
The present invention relates to technical field of bicycles, and in particular to one kind three keeps off internal 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.In internal speed changer using it is more be three gear internal speed changers, internal speed changer of the prior art will generally be used
Three sets of freewheel clutches, not only make it that whole internal speed changer structure is complex, and cause that internal speed changer noise is big, resistance
Greatly；
Therefore, it is necessary to provide a kind of three gear internal speed changers for solving above-mentioned technical problem.
【The content of the invention】
To solve the above problems, it is an object of the invention to provide a kind of compact conformation, the three of noise and resistance can be reduced
Keep off internal speed changer.
To achieve the above object, the technical scheme taken of the present invention is：One kind three keeps off internal speed changer, including：Central shaft, wheel
Hub and the power input being arranged between central shaft and wheel hub, planetary transmission, gearshift and group retaining device, the wheel hub
For power output member, the central shaft is mutually fixed with vehicle frame, and the planetary transmission includes：Centre wheel, planet carrier, planetary gear and
Gear ring, the centre wheel is arranged on central shaft and is integrally formed or is fixedly connected with central shaft, and the gearshift includes：Change
Interstage sleeve, ratchet, pallet piece frame and at least one pallet piece being installed on pallet piece frame, the shifting sleeve are sheathed on central shaft
And formed and be slidably connected between power input, one end of the shifting sleeve is provided with the first docking section, the one of the planet carrier
End is provided with the second docking section being engaged with the first docking section, when the first docking section is relative with the second docking section to be connect, shifting sleeve
Synchronous axial system is realized with planet carrier, the ratchet includes the first ratchet being arranged on shifting sleeve outer circumference surface and is arranged at wheel hub
The second interior ratchet, the pallet piece frame is integrally formed or is fixedly connected with gear ring, and the pallet piece frame, which is provided with, to be used to control
The elastic component of pallet piece initial position, the pallet piece includes first end, the second end and positioned at first end and the second end
Middle installation portion between portion, the first end is provided with the first ratchet portion being engaged with the first ratchet, the second end
Provided with the second ratchet portion being engaged with the second ratchet, freewheel clutch is provided between the planet carrier and wheel hub.
Preferably, the gear internal speed changer of one kind three in the present invention is further arranged to：The pallet piece frame is set in annular shape
Put, several grooves are offered on the pallet piece frame, the pallet piece is contained in the groove and is installed on pallet piece by pin
On frame.
Preferably, the gear internal speed changer of one kind three in the present invention is further arranged to：The elastic component be spring, torsion spring or
Shell fragment.
Preferably, the gear internal speed changer of one kind three in the present invention is further arranged to：The freewheel clutch includes surmounting
Ratchet and surmount ratchet, one of them for surmounting ratchet and surmounting in both ratchets is arranged on the outer circumference surface of planet carrier, separately
One is arranged in wheel hub.
Preferably, the gear internal speed changer of one kind three in the present invention is further arranged to：The first docking on the shifting sleeve
Portion is external splines, and the second docking section on the planet carrier is internal spline.
Preferably, the gear internal speed changer of one kind three in the present invention is further arranged to：One end of the wheel hub and central shaft
Between connected by bearing or ball, pass through bearing between the other end and power input of the wheel hub or ball connected, institute
State between power input and central shaft by bearing or ball connection.
Preferably, the gear internal speed changer of one kind three in the present invention is further arranged to：The described group of retaining device include dialling pin,
Fix bar and back-moving spring, described group of pin are axially arranged in central shaft and can moved axially relative to central shaft, described
Fix bar is radially arranged in shifting sleeve and can relatively rotated with shifting sleeve formation, and the central shaft is provided with to match with fix bar
The chute of conjunction, the back-moving spring is arranged between shifting sleeve and bearing or ball.
Preferably, the gear internal speed changer of one kind three in the present invention is further arranged to：The outer circumference surface of the shifting sleeve is in
It is step-like to set, including：First spline segment, the second spline segment and the ratchet being arranged between the first spline segment and the second spline segment
Transition conical section is provided with section, cylindrical section and cavity segment, the cavity segment.
Preferably, the gear internal speed changer of one kind three in the present invention is further arranged to：The ratchet section is arranged at the second flower
In key section.
Compared with prior art, the present invention has the advantages that：Compared to of the prior art three gear internal speed changers,
Three gear internal speed changers in the present invention only used a set of freewheel clutch, so as to enormously simplify the structure of internal speed changer, drop
Low noise, resistance and manufacturing cost.
【Brief description of the drawings】
Fig. 1 is the main structure diagram of three gear internal speed changers in the present invention.
Fig. 2 is the cross section structure diagram of three gear internal speed changers in the present invention.
Fig. 3 is the decomposition texture schematic diagram of three gear internal speed changers in the present invention.
In figure：1st, central shaft, 2, wheel hub, 3, power input, the 30, first internal spline, 4, planetary transmission, 40, center
Wheel, 41, planet carrier, the 410, second internal spline, outside 42, planetary gear, 43, gear ring, 5, gearshift, 50, shifting sleeve, 500, first
Spline, the 501, second external splines, 502, cavity segment, 503, transition conical section, 504, cylindrical section, the 51, first ratchet, 52, second
Ratchet, 53, pallet piece frame, 530, groove, 531, elastic component, 54, pallet piece, 540, first end, the 5400, first ratchet portion,
541st, the second end, the 5410, second ratchet portion, 542, middle installation portion, 6, dial retaining device, 60, dial pin, 61, fix bar,
62nd, back-moving spring, 63, oval chute, 7, freewheel clutch, 70, surmount ratchet, 71, surmount ratchet.
【Embodiment】
A kind of three gears internal speed changer of the present invention is described in further detail below by specific embodiment.
Join shown in Fig. 1 to Fig. 3, one kind three keeps off internal speed changer, including：Central shaft 1, wheel hub 2 and be arranged at central shaft 1 with wheel
Power input 3, planetary transmission 4, gearshift 5 and group retaining device 6 between hub 2, the wheel hub 2 is power output member,
The central shaft 1 is mutually fixed with vehicle frame.Connected between one end of the wheel hub 2 and central shaft 1 by bearing or ball, the wheel
Connected, led between the power input 3 and central shaft 1 by bearing or ball between the other end and power input 3 of hub 2
Cross bearing or ball connection.
The planetary transmission 4 includes：Centre wheel 40, planet carrier 41, planetary gear 42 and gear ring 43, the centre wheel 40 are set
It is placed on central shaft 1 and is integrally formed with central shaft 1.The gearshift 5 includes：Shifting sleeve 50, it is arranged at outside shifting sleeve 50
The first ratchet 51, the second ratchet 52 being arranged in wheel hub 2, pallet piece frame 53 on periphery and it is installed on pallet piece frame 53
At least one pallet piece 54, the shifting sleeve 50 be sheathed on central shaft 1 and between power input 3 formed slide connect
Connect, be by being provided with the first external splines 500 in one end of shifting sleeve 50, being provided with power input 3 in the present embodiment
The first internal spline 30 being engaged with the first external splines 500 realizes relative slip of the shifting sleeve 50 relative to power input 3
, can be also slidably connected mode using others in other implementations certainly, and the other end of the shifting sleeve 50 is provided with
Second external splines 501, one end of the planet carrier 41 is provided with the second internal spline 410 being engaged with the second external splines 501, when the
When two external splines 501 are meshed with the second internal spline 410, shifting sleeve 50 realizes synchronous axial system, the pallet piece with planet carrier 41
Frame 53 is integrally formed or is fixedly connected with gear ring 43, and the pallet piece frame 53 is set in circular, is opened on the pallet piece frame 53
Provided with several grooves 530, the pallet piece 54 is contained in the groove 530 and is installed on by pin on pallet piece frame 53.It is described
Pallet piece frame 53, which is provided with, is used to controlling the elastic component 531 of the initial position of pallet piece 54, the elastic component 531 can for spring,
Torsion spring or shell fragment.The pallet piece 54 includes first end 540, the second end 541 and positioned at first end 540 and the second end
Middle installation portion 542 between 541, the first end 540 is provided with the first ratchet portion 5400 being engaged with the first ratchet 51,
The second end 541 is provided with the second ratchet portion 5410 being engaged with the second ratchet 52, between the planet carrier 41 and wheel hub 2
Provided with freewheel clutch 7.The freewheel clutch 7 includes surmounting ratchet 70 and surmounting ratchet 71, in the present embodiment, described
Surmount ratchet 70 to be arranged on planet carrier 41, the ratchet 71 that surmounts is arranged in wheel hub 2, certainly in other embodiments
In, the ratchet that surmounts may also set up in wheel hub 2, and the ratchet that surmounts may also set up on planet carrier 41.The shifting sleeve
50 outer circumference surface is set in step-like, including：First spline segment (that section that the first external splines 500 is set), the second flower
Key section (that section that the second external splines 501 is set) and the ratchet section being arranged between the first spline segment and the second spline segment
(that section that the first ratchet 51 is set), cylindrical section 504 and cavity segment 502.Transition conical section is provided with the cavity segment 502
503.In the present embodiment, the cylindrical section 504 is located between ratchet section and cavity segment 502, the ratchet section and the second flower
Key section is provided separately, certainly in other implementations, and the ratchet section can be also directly arranged on the second spline segment, cavity
Section 502 may also set up between ratchet section and cylindrical section 504, can equally realize the present invention.
Described group of retaining device 6 includes dialling pin 60, fix bar 61 and back-moving spring 62, and described group of pin 60 is axially arranged in
It can move axially in central shaft 1 and relative to central shaft 1, it is interior and can be with that the radial direction of fix bar 61 is arranged in shifting sleeve 50
Shifting sleeve 50 is relatively rotated, and described group of pin 60 is vertical setting with fix bar 61, and the central shaft 1 is provided with and fix bar 61
The oval chute 63 being engaged, the back-moving spring 62 is arranged between shifting sleeve 50 and bearing or ball.Described group of gear machine
The operation principle of structure is：When pin 60 is dialled in axial movement, group pin 60 can withstand fix bar 61 and move axially together, and then drive
Shifting sleeve 50 is moved axially together, and shifting sleeve 50 can return to original position in the presence of back-moving spring 62.
The operation principle of three gear internal speed changers is in the present invention：Internal speed changer in the present invention realizes three gear speed changes altogether, moves
Power is inputted by power input 3, and power output is carried out by wheel hub 2, during bottom gear, by mobile pin 60 of dialling come moving gear shift set
50, the ratchet section of shifting sleeve 50 is located at the position of pallet piece 54, now the first ratchet 51 and pallet piece 54 on shifting sleeve 50
The first ratchet portion 5400 be meshed, while taking off the second ratchet portion 5410 of the second ratchet 52 and pallet piece 54 in wheel hub 2
From engagement, power is inputted by power input 3, due to being connected between power input 3 and shifting sleeve 50 by spline, shifting sleeve
50 synchronous axial systems, because the first ratchet 51 on shifting sleeve 50 is meshed with the first ratchet portion 5400 on pallet piece 54, ratchet
Part frame 53 is rotated, and because pallet piece frame 53 is integrally formed with gear ring 43, gear ring 43 is rotated, the transmission that gear ring 43 passes through planetary gear 42
Planet carrier 41 is imparted power to, planet carrier 41 drives wheel hub 2 to export power by freewheel clutch, during middle speed gear, by moving
Dynamic pin 60 of dialling carrys out moving gear shift set 50, the cylindrical section 504 of shifting sleeve 50 is located at the position of pallet piece 34, makes shifting sleeve 50
The part of second external splines 501 connects with the second internal spline 410 of planet carrier, now the first ratchet 51 on shifting sleeve 50 and spine
First ratchet portion 5400 of bluff piece 54 is disengaged from, the second ratchet portion 5410 of the second ratchet 52 and pallet piece 54 in wheel hub 2
It is disengaged from, second external splines 501 of the one end of shifting sleeve 50 is meshed with the part of the second internal spline 410 of the one end of planet carrier 41,
Power is inputted by power input 3, due to being connected between power input 3 and shifting sleeve 50 by spline, therefore shifting sleeve 50
Synchronous axial system, due to being connected between shifting sleeve 50 and planet carrier 41 further through spline, therefore planet carrier 41 is rotated, and planet carrier 41 leads to
Cross freewheel clutch and drive the output power of wheel hub 2.During top gear, freewheel clutch is in servo-actuated state, and pin is dialled by mobile
60 carry out moving gear shift set 50, the conical section 503 of shifting sleeve 50 is moved past the first end 540 of pallet piece 54, now pallet piece 54
First end 540 be located at shifting sleeve 50 cavity 502 in, the second external splines 501 of shifting sleeve 50 is completely interior with planet carrier
Spline 410 connects, and the first ratchet portion 5400 of the first ratchet 51 on shifting sleeve 50 and pallet piece 54 is disengaged from, in wheel hub 2
The second ratchet 52 be meshed with the second ratchet portion 5410 of pallet piece 54, while making second external splines of the one end of shifting sleeve 50
501 are meshed with second internal spline 410 of the one end of planet carrier 41, and power is inputted by power input 3, due to power input 3
Be connected between shifting sleeve 50 by spline, therefore the synchronous axial system of shifting sleeve 50, due between shifting sleeve 50 and planet carrier 41 again
Connected by spline, therefore planet carrier 41 is rotated, planet carrier 41 imparts power to gear ring 43, tooth by the transmission of planetary gear 42
Circle 43 drives pallet piece frame 53 and pallet piece 54 to rotate, due to the second ratchet portion 5410 on pallet piece 54 and second in wheel hub 2
Ratchet 52 is meshed, therefore power is ultimately transferred to wheel hub 2.
In summary, three gear internal speed changers in the present invention only used a set of freewheel clutch, so as to enormously simplify
The structure of internal speed changer, reduces noise, resistance and manufacturing cost.
The principle and its effect of the above embodiments only illustrative the invention, and the implementation that part is used
Example, not for the limitation present invention；It should be pointed out that for the person of ordinary skill of the art, not departing from wound of the present invention
On the premise of making design, various modifications and improvements can be made, these belong to protection scope of the present invention.
Claims (9)
1. one kind three keeps off internal speed changer, it is characterised in that including：Central shaft, wheel hub and it is arranged between central shaft and wheel hub
Power input, planetary transmission, gearshift and group retaining device, the wheel hub are power output member, the central shaft and car
Frame is mutually fixed, and the planetary transmission includes：Centre wheel, planet carrier, planetary gear and gear ring, the centre wheel are arranged at central shaft
Go up and be integrally formed or be fixedly connected with central shaft, the gearshift includes：Shifting sleeve, ratchet, pallet piece frame and it is installed on
At least one pallet piece on pallet piece frame, the shifting sleeve is sheathed on central shaft and formed between power input and slided
Connection, one end of the shifting sleeve is provided with the first docking section, and one end of the planet carrier is provided with what is be engaged with the first docking section
Second docking section, when the first docking section is relative with the second docking section to be connect, shifting sleeve realizes synchronous axial system, the spine with planet carrier
Wheel include the first ratchet being arranged on shifting sleeve outer circumference surface and the second ratchet being arranged in wheel hub, the pallet piece frame with
Gear ring is integrally formed or is fixedly connected, and the pallet piece frame is provided with the elastic component for being used for controlling pallet piece initial position, described
Pallet piece includes first end, the second end and the middle installation portion between first end and the second end, described first
End is provided with the first ratchet portion being engaged with the first ratchet, and the second end is provided with the second spine being engaged with the second ratchet
Claw, is provided with freewheel clutch between the planet carrier and wheel hub.
2. one kind three as claimed in claim 1 keeps off internal speed changer, it is characterised in that：The pallet piece frame is set in circular,
Several grooves are offered on the pallet piece frame, the pallet piece is contained in the groove and is installed on pallet piece frame by pin
On.
3. one kind three as claimed in claim 1 keeps off internal speed changer, it is characterised in that：The elastic component is spring, torsion spring or bullet
Piece.
4. one kind three as claimed in claim 1 keeps off internal speed changer, it is characterised in that：The freewheel clutch includes surmounting ratchet
And surmounting ratchet, one of them for surmounting ratchet and surmounting in both ratchets is arranged on the outer circumference surface of planet carrier, another
It is arranged in wheel hub.
5. one kind three as claimed in claim 1 keeps off internal speed changer, it is characterised in that：The first docking section on the shifting sleeve is
The second docking section on external splines, the planet carrier is internal spline.
6. one kind three as claimed in claim 1 keeps off internal speed changer, it is characterised in that：Between one end of the wheel hub and central shaft
Connected, connected between the other end and power input of the wheel hub by bearing or ball by bearing or ball, it is described dynamic
Connected between power input component and central shaft by bearing or ball.
7. one kind three as claimed in claim 1 keeps off internal speed changer, it is characterised in that：Described group of retaining device includes dialling pin, consolidated
Fixed pole and back-moving spring, described group of pin are axially arranged in central shaft and can moved axially relative to central shaft, described solid
Fixed pole is radially arranged in shifting sleeve and can relatively rotated with shifting sleeve formation, and the central shaft is provided with and is engaged with fix bar
Chute, the back-moving spring is arranged between shifting sleeve and bearing or ball.
8. one kind three as claimed in claim 1 keeps off internal speed changer, it is characterised in that：The outer circumference surface of the shifting sleeve is in step
Shape is set, including：First spline segment, the second spline segment and be arranged between the first spline segment and the second spline segment ratchet section,
Transition conical section is provided with cylindrical section and cavity segment, the cavity segment.
9. one kind three as claimed in claim 8 keeps off internal speed changer, it is characterised in that：The ratchet section is arranged at the second spline segment
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448252.4A CN107244378B (en) | 2017-06-14 | 2017-06-14 | Three-gear internal transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448252.4A CN107244378B (en) | 2017-06-14 | 2017-06-14 | Three-gear internal transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107244378A true CN107244378A (en) | 2017-10-13 |
| CN107244378B CN107244378B (en) | 2022-06-07 |
Family
ID=60018108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710448252.4A Active CN107244378B (en) | 2017-06-14 | 2017-06-14 | Three-gear internal transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107244378B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107600302A (en) * | 2017-10-23 | 2018-01-19 | 张家港市九鼎机械有限公司 | A kind of transmission shaft output speed variator |
| CN107933815A (en) * | 2017-12-21 | 2018-04-20 | 张家港川梭车业有限公司 | A kind of gear ring fixes centre shaft variable speed device |
| CN107953966A (en) * | 2017-12-21 | 2018-04-24 | 张家港川梭车业有限公司 | A kind of centre wheel fixes centre shaft variable speed device |
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|---|---|---|---|---|
| GB1495774A (en) * | 1974-05-29 | 1977-12-21 | Fichtel & Sachs Ag | Multi-speed gear hubs |
| JPS6418792A (en) * | 1987-07-13 | 1989-01-23 | Shimano Industrial Co | Variable speed gear for bicycle |
| CN1199696A (en) * | 1997-05-08 | 1998-11-25 | 株式会社岛野 | Built-in variable speed wheel hub for bicycle |
| CN1228381A (en) * | 1998-03-09 | 1999-09-15 | 黄志伟 | Speed variator for bicycle |
| CN1310118A (en) * | 2000-02-25 | 2001-08-29 | 黄志伟 | Speed varying back shaft for bicycle |
| CN101152896A (en) * | 2007-10-19 | 2008-04-02 | 韦建葵 | Speed-changing bicycle and rear axle planetary gear speed variator thereof |
| CN103569306A (en) * | 2013-11-19 | 2014-02-12 | 李激初 | Inner speed changer of bicycle |
| CN106428403A (en) * | 2016-08-31 | 2017-02-22 | 张家港川梭车业有限公司 | Three-level variable-speed drive device stable in speed change |
| CN106741561A (en) * | 2016-12-31 | 2017-05-31 | 张家港川梭车业有限公司 | A kind of third gear fully-automatic gearbox |
| CN206797621U (en) * | 2017-06-14 | 2017-12-26 | 张家港川梭车业有限公司 | One kind three keeps off internal speed changer |
-
2017
- 2017-06-14 CN CN201710448252.4A patent/CN107244378B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1495774A (en) * | 1974-05-29 | 1977-12-21 | Fichtel & Sachs Ag | Multi-speed gear hubs |
| JPS6418792A (en) * | 1987-07-13 | 1989-01-23 | Shimano Industrial Co | Variable speed gear for bicycle |
| CN1199696A (en) * | 1997-05-08 | 1998-11-25 | 株式会社岛野 | Built-in variable speed wheel hub for bicycle |
| CN1228381A (en) * | 1998-03-09 | 1999-09-15 | 黄志伟 | Speed variator for bicycle |
| CN1310118A (en) * | 2000-02-25 | 2001-08-29 | 黄志伟 | Speed varying back shaft for bicycle |
| CN101152896A (en) * | 2007-10-19 | 2008-04-02 | 韦建葵 | Speed-changing bicycle and rear axle planetary gear speed variator thereof |
| CN103569306A (en) * | 2013-11-19 | 2014-02-12 | 李激初 | Inner speed changer of bicycle |
| CN106428403A (en) * | 2016-08-31 | 2017-02-22 | 张家港川梭车业有限公司 | Three-level variable-speed drive device stable in speed change |
| CN106741561A (en) * | 2016-12-31 | 2017-05-31 | 张家港川梭车业有限公司 | A kind of third gear fully-automatic gearbox |
| CN206797621U (en) * | 2017-06-14 | 2017-12-26 | 张家港川梭车业有限公司 | One kind three keeps off internal speed changer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107600302A (en) * | 2017-10-23 | 2018-01-19 | 张家港市九鼎机械有限公司 | A kind of transmission shaft output speed variator |
| CN107933815A (en) * | 2017-12-21 | 2018-04-20 | 张家港川梭车业有限公司 | A kind of gear ring fixes centre shaft variable speed device |
| CN107953966A (en) * | 2017-12-21 | 2018-04-24 | 张家港川梭车业有限公司 | A kind of centre wheel fixes centre shaft variable speed device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107244378B (en) | 2022-06-07 |
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