CN203345152U - Bicycle transmission speed change mechanism - Google Patents
Bicycle transmission speed change mechanism Download PDFInfo
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- CN203345152U CN203345152U CN 201320321404 CN201320321404U CN203345152U CN 203345152 U CN203345152 U CN 203345152U CN 201320321404 CN201320321404 CN 201320321404 CN 201320321404 U CN201320321404 U CN 201320321404U CN 203345152 U CN203345152 U CN 203345152U
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Abstract
The utility model provides a bicycle transmission speed change mechanism, and belongs to the technical field of bicycles. The bicycle transmission speed change mechanism comprises a driving shaft and a driven shaft, wherein the driving shaft is connected with two pedals, and the driven shaft is connected with a rear bicycle wheel. The bicycle transmission speed change mechanism is characterized by comprising a first square-shaped gear set and a second square-shaped gear set, and further comprising a speed change mechanism body composed of a clutch and a speed change gear set. The bicycle transmission speed change mechanism is simple and reasonable in structure, the two square-shaped gear sets are adopted for transmission, four gears are meshed and conduct transmission to achieve transmission stability of the square-shaped gear set, kinetic energy can be recycled, the functional usage rate is increased, and a bicycle is ridden easily and conveniently in a labor-saving mode. Besides, the speed change mechanism body is arranged, a user starts to ride the bicycle easily in a labor-saving mode, and then the bicycle runs at a high speed automatically. All the gears are spiral bevel gears, are meshed at 45 degrees, and achieve 90-degree vertical transmission, the meshing contact surfaces of the gears are enlarged, and transmission efficiency and bearing capacity of the bicycle transmission speed change mechanism are enhanced further. The bicycle transmission speed change mechanism works reliably, is compact in structure, saves energy, materials and space, and is resistant to abrasion, long in service life and low in noise.
Description
Technical field
The utility model belongs to technical field of bicycles, is specially the bicycle transmission shifting mechanism.
Background technology
The current driven off by shaft bicycle of gear, it is all one group of bevel gear, first driving wheel, first follower is engaged, the definition of bevel-gear rotating is 45 degree interlocks, 90 degree vertical-transmissions, such transmission just can reach working stability and rotate strong, bevel gear combination on the automobile steamer is all according to this definition, but the angular wheel shaft transmission combination on current bicycle is not according to this definition, the first driving wheel and the first follower do not have shape in angle of 45 degrees, let alone 90 degree transmission, a two wheel treads interlock 1/3rd, because bicycle does not have much load carrying abilities, the designer has not just thought hard in this respect yet, its result is not all brought bevel gear transmission save effort functional into play, main is that the antagonistic force and the work done direction that between screw bevel gear, produce are inconsistent, forms 90 degree horizontal thrusts, and function that Here it is runs off.
The utility model content
For the above-mentioned problems in the prior art, the purpose of this utility model is that design provides a kind of technical scheme of bicycle transmission shifting mechanism, adopt the transmission of two groups of square shape gear clusters, the square shape gear cluster can be offset the horizontal thrust produced between screw bevel gear, and the function run off is reclaimed; And speed-changing mechanism is set, and its transmission is stable, long service life, and noise is low, and kinetic energy can reclaim, and has greatly improved the function Occupation coefficient, and easily, the rear speed that automatically uprises of advancing, pedal Portable power saving, low-carbon environment-friendly in starting.
Described bicycle transmission shifting mechanism, comprise the imput shaft that connects two pedals, the driven shaft that connects bicycle rear, it is characterized in that fixed installation the first driving wheel on imput shaft, the first driving wheel and the first follower, the first flower wheel, the first power-assisted are taken turns intermeshing transmission and are formed first group of square shape gear cluster, the first follower is fixedly mounted on driven shaft, the first flower wheel and imput shaft normal-running fit, and the first power-assisted wheel is arranged on cycle frame; The driven shaft other end fixedly mounts the second driving wheel, the second driving wheel and the second follower, the second flower wheel, the second power-assisted are taken turns intermeshing transmission and are formed second group of square shape gear cluster, the second follower is fixedly connected with rear rotating shaft by anti-tooth flywheel A, the second flower wheel is arranged on cycle frame, the second power-assisted wheel is fixedly connected with positive tooth flywheel B, positive tooth flywheel B and rear rotating shaft normal-running fit, rear axle housing is connected by positive tooth flywheel B, anti-tooth flywheel C and rear rotating shaft;
Also comprise the speed-changing mechanism formed by power-transfer clutch, gear teeth wheels, described power-transfer clutch comprises pellet power-transfer clutch, clutch Cang Gai, one group of pellet is set, pellet power-transfer clutch and rear rotating shaft normal-running fit, clutch Cang Gai and rear rotating shaft bearing fit between pellet power-transfer clutch, clutch storehouse lid; The gear teeth wheels are set between clutch Cang Gai and rear axle housing, described gear teeth wheels consist of the internally toothed annulus of engaged transmission, three planetary wheels and sun gear, sun gear is connected by anti-tooth flywheel C and rear axle housing, and clutch Cang Gai, internally toothed annulus middle part all arrange corresponding strong tooth and connect by brake spring elasticity.
Described bicycle transmission shifting mechanism, is characterized in that, between described pellet power-transfer clutch, clutch storehouse lid, 3-6 pellet is set; Described speed-changing mechanism outer setting housing and case lid, housing is by bearing J and rear rotating shaft normal-running fit and by nut A locking is set; Three planetary wheels are arranged on case lid.
Described bicycle transmission shifting mechanism, is characterized in that equal 45 degree interlocks 90 degree vertical-transmissions between the first driving wheel, the first follower, the first flower wheel, the first power-assisted wheel of intermeshing transmission; Equal 45 degree interlock 90 degree vertical-transmissions between the second driving wheel, the second follower, the second flower wheel, the second power-assisted wheel.
Described bicycle transmission shifting mechanism, is characterized in that described the first driving wheel, the first follower, the first flower wheel, the first power-assisted wheel, the second driving wheel, the second follower, the second flower wheel, the second power-assisted wheel are screw bevel gear.
Described bicycle transmission shifting mechanism, it is characterized in that the first driving wheel and the first follower engaged transmission, the first follower and the first flower wheel engaged transmission, the first flower wheel and the first power-assisted wheel engaged transmission, the first power-assisted wheel and the first driving wheel engaged transmission; The second driving wheel and the second follower engaged transmission, the second follower and the second flower wheel engaged transmission, the second flower wheel and the second power-assisted wheel engaged transmission, the second power-assisted wheel and the second driving wheel engaged transmission.
Described bicycle transmission shifting mechanism, is characterized in that the first driving wheel, imput shaft are fixedly connected with by sunk key is set, and the first flower wheel, imput shaft be by the bearings D normal-running fit, the first power-assisted wheel be arranged on the front end cover B of bicycle and with its normal-running fit.
Described bicycle transmission shifting mechanism, is characterized in that on the imput shaft of the first driving wheel outer end installing front case A, and front case A, imput shaft are by bearing B, front end cover A normal-running fit.
Described bicycle transmission shifting mechanism, it is characterized in that driven shaft, the second driving wheel are fixedly connected with by sunk key is set, the second follower, rear rotating shaft be by anti-tooth flywheel A normal-running fit, the second flower wheel be arranged on the front end cover D of bicycle upper and with its normal-running fit.
Described bicycle transmission shifting mechanism, is characterized in that driven shaft outer setting sleeve pipe, and sleeve pipe one end arranges driven shaft housing A, and the first follower is by bearing A and driven shaft housing A normal-running fit; Driven shaft outer setting sleeve pipe, the sleeve pipe other end arranges driven shaft housing B, and the second driving wheel is by bearing E and driven shaft housing B normal-running fit.
Described bicycle transmission shifting mechanism, is characterized in that in the rear rotating shaft of the second follower outer end installing front case B, and front case B, rear rotating shaft are by bearing F normal-running fit and by nut locking is set.
Above-mentioned bicycle transmission shifting mechanism, simple and reasonable for structure, adopt the transmission of two groups of square shape gear clusters, adopt four intermeshing transmissions of gear to form the stable drive of square shape gear cluster, the square shape gear cluster can be offset the horizontal thrust produced between screw bevel gear, the function run off is reclaimed, greatly improved the function Occupation coefficient, pedal Portable power saving; And speed-changing mechanism is set, and start to walk easily laborsaving, the rear speed that automatically uprises of advancing; And each gear is screw bevel gear, between gear, 45 degree interlock 90 degree vertical-transmissions, increased the engaged gears contact surface, further strengthens its driving efficiency and load-carrying capacity, its reliable operation, compact conformation, energy-conservation material-saving, save space, wear-resistant, the life-span is long, and noise is little.
The accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model;
Fig. 2 is drive mechanism schematic diagram of the present utility model;
The structural representation that Fig. 3 is the gear teeth wheels;
In figure: the 1-driven shaft, the 2-sleeve pipe, 3-driven shaft housing A, 3a-driven shaft housing B, 4-bearing A, 5-the first follower, 6-front end cover A, the 7-imput shaft, 8-bearing B, 9-the first driving wheel, 10-front case A, 11-the first power-assisted wheel, 12-the first flower wheel, the 13-front end cover B, the 14-adapter, the 15-axle sleeve, 16-axle sleeve lid, 17-bearing C, 18-front end cover C, the 19-bearings D, 20-bearing E, 21-the second driving wheel, 22-the second follower, 23-front case B, 24-bearing F, the 25-nut, the anti-tooth flywheel of 26-A, 27-the second flower wheel, 28-front end cover D, 29-rear housing lid, 30-the second power-assisted wheel, the positive tooth flywheel of 31-B, 32-bearing H, the 33-rear axle housing, the 34-bearing I, rotating shaft after 35-, the anti-tooth flywheel of 36-C, the 37-internally toothed annulus, the 38-planetary wheel, the 39-sun gear, 40-pellet power-transfer clutch, 41-nut A, 42-bearing J, 43-clutch Cang Gai, the 44-pellet, the 45-brake spring, the 46-housing, the 47-case lid.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described in further detail.
As shown in the figure, this bicycle transmission shifting mechanism, comprise the imput shaft 7 that connects two pedals, the driven shaft 1 that connects bicycle rear, on imput shaft 7, fixed installation the first driving wheel 9, the first driving wheels 9 and the first follower 5, the first flower wheel 12, the first power-assisted are taken turns 11 intermeshing transmissions and are formed first group of square shape gear cluster, and the first follower 5 is fixedly mounted on driven shaft 1, the first flower wheel 12 and imput shaft 7 normal-running fiies, the first power-assisted wheel 11 is arranged on cycle frame; Driven shaft 1 other end fixedly mounts the second driving wheel 21, the second driving wheel 21 and the second follower 22, the second flower wheel 27, the second power-assisted are taken turns 30 intermeshing transmissions and are formed second group of square shape gear cluster, the second follower 22 is fixedly connected with rear rotating shaft 35 by anti-tooth flywheel A26, the second flower wheel 27 is arranged on cycle frame, the second power-assisted wheel 30 is fixedly connected with positive tooth flywheel B31, positive tooth flywheel B31 and rear rotating shaft 35 normal-running fiies; Rear axle housing 33 is connected by positive tooth flywheel B31, anti-tooth flywheel C36 and bearing H32, bearing I 34 and rear rotating shaft 35.
Also comprise the speed-changing mechanism formed by power-transfer clutch, gear teeth wheels, described power-transfer clutch comprises pellet power-transfer clutch 40, clutch storehouse lid 43, between pellet power-transfer clutch 40, clutch storehouse lid 43, one group of pellet 44 is set, pellet power-transfer clutch 40 and rear rotating shaft 35 normal-running fiies, clutch storehouse lid 43 and rear rotating shaft 35 bearing fits; Between clutch storehouse lid 43 and rear axle housing 33, the gear teeth wheels are set, described gear teeth wheels consist of the internally toothed annulus 37 of engaged transmission, three planetary wheels 38 and sun gear 39, sun gear 39 is connected by anti-tooth flywheel C36 and rear axle housing 33, and clutch storehouse lid 43, internally toothed annulus 37 middle parts all arrange corresponding strong tooth and connect by brake spring 45 elasticity.Between described pellet power-transfer clutch 40, clutch storehouse lid 43,3-6 pellet 44 is set, minute storage is at each marble bin middle part; Described speed-changing mechanism outer setting housing 46 and case lid 47, housing 46 is by bearing J42 and rear rotating shaft 35 normal-running fiies and by nut A41 locking is set; Three planetary wheels 38 are arranged on case lid 47.The first driving wheel 9 and the first follower 5 engaged transmission, the first follower 5 and the first flower wheel 12 engaged transmission, the first flower wheel 12 and the first power-assisted are taken turns 11 engaged transmission, first power-assisted wheel the 11 and first driving wheel 9 engaged transmission; The second driving wheel 21 and the second follower 22 engaged transmission, the second follower 22 and the second flower wheel 27 engaged transmission, the second flower wheel 27 and the second power-assisted are taken turns 30 engaged transmission, second power-assisted wheel the 30 and second driving wheel 21 engaged transmission.The square shape gear cluster that adopts four intermeshing transmissions of gear to form, its stable drive, kinetic energy can reclaim, and has greatly improved the function Occupation coefficient, pedals Portable power saving.Equal 45 degree interlock 90 degree vertical-transmissions between the first driving wheel 9 of intermeshing transmission, the first follower 5, the first flower wheel 12, the first power-assisted wheel 11; Equal 45 degree interlock 90 degree vertical-transmissions between the second driving wheel 21, the second follower 22, the second flower wheel 27, the second power-assisted wheel 30.The first driving wheel 9, the first follower 5, the first flower wheel 12, first power-assisted wheel the 11, second driving wheel 21, the second follower 22, the second flower wheel 27, the second power-assisted wheel 30 are screw bevel gear, adopt this structure can increase the engaged gears contact surface, further strengthen its driving efficiency and load-carrying capacity, wear-resistant, long service life, noise is low.The first driving wheel 9, imput shaft 7 are fixedly connected with by sunk key is set, and the first flower wheel 12, imput shaft 7 be by bearings D 19 normal-running fiies, the first power-assisted wheel 11 be arranged on the front end cover B 13 of bicycle and with its normal-running fit.Front case A10 is installed on the imput shaft 7 of the first driving wheel 9 outer ends, and front case A10, imput shaft 7 are by bearing B8, front end cover A6 normal-running fit.Driven shaft 1 outer setting sleeve pipe 2, sleeve pipe 2 one ends arrange driven shaft housing A3, and the first follower 5 is by bearing A4 and driven shaft housing A3 normal-running fit.On the imput shaft 7 of the first flower wheel 12 outer ends, axle sleeve 15 is set, axle sleeve 15 1 ends by axle sleeve cover 16, front end cover C18, bearing C17 and imput shaft 7 normal-running fiies, axle sleeve 15 other ends are arranged on vehicle frame, are equipped with adapter 14 on the sleeve pipe of axle sleeve 15.Driven shaft 1, the second driving wheel 21 are fixedly connected with by sunk key is set, and the second follower 22, rear rotating shaft 35 be by anti-tooth flywheel A26 normal-running fit, the second flower wheel 27 be arranged on the front end cover D28 of bicycle upper and with its normal-running fit.Driven shaft 1 outer setting sleeve pipe 2, sleeve pipe 2 other ends arrange driven shaft housing B3a, and the second driving wheel 21 is by bearing E20 and driven shaft housing B3a normal-running fit.Front case B23 is installed in the rear rotating shaft 35 of the second follower 22 outer ends, and front case B23, rear rotating shaft 35 are by bearing F24 normal-running fit and by nut 25 lockings are set.Driven shaft housing B3a and front end cover D28 mono-end cover 29 by rear housing and are connected.
During the firm setting in motion of bicycle, first group of square shape gear cluster rotates, and drives second group of square shape gear cluster and synchronously rotates, and now the second power-assisted wheel 30 rotates bicycle is travelled forward by positive tooth flywheel B31 drive rear axle housing 33, due to the effect of anti-tooth flywheel A26, rotating shaft 35 idle running after the second flower wheel 27 drives, when speed of a motor vehicle raising voluntarily, pellet 44 produces centnifugal force and expands outwardly, force the clutch storehouse lid 43 compression brake springs 45 of the strong tooth of mobilizable band to slide to internally toothed annulus 37 directions, when clutch storehouse lid 43, the strong tooth interlock of internally toothed annulus 37 middle part correspondences, change-speed box power produces, the power transmission program is: the second driving wheel 21 drives the second follower 22 and rotates, the second follower 22 drives pellet power-transfer clutch 40 by rear rotating shaft 35, clutch storehouse lid 43 rotates, when clutch storehouse lid 43, during the strong tooth interlock of internally toothed annulus 37 middle part correspondences, clutch storehouse lid 43 drives internally toothed annulus 37 and rotates, driving sun gear 39 through three planetary wheels 38 rotates, sun gear 39 drives rear axle housing 33 by anti-tooth flywheel C36 and rotates, produce like this 3 grades of speed changes, when speed change produces, due to the effect of positive tooth flywheel B31, rear axle housing 33 and the second power-assisted wheel 30 do not have drive connection, while only having reduction of speed, and pellet 44 returns, brake spring 45 forces clutch storehouse lid 43 and pellet power-transfer clutch 40 zoariums, and the second power-assisted wheel 30 makes again power.
Claims (10)
1. bicycle transmission shifting mechanism, comprise the imput shaft (7) that connects two pedals, the driven shaft (1) that connects bicycle rear, it is characterized in that the upper fixed installation of imput shaft (7) the first driving wheel (9), the first driving wheel (9) and the first follower (5), the first flower wheel (12), first power-assisted wheel (11) intermeshing transmission forms first group of square shape gear cluster, the first follower (5) is fixedly mounted on driven shaft (1), the first flower wheel (12) and imput shaft (7) normal-running fit, the first power-assisted wheel (11) is arranged on cycle frame, driven shaft (1) other end fixedly mounts the second driving wheel (21), the second driving wheel (21) and the second follower (22), the second flower wheel (27), second power-assisted wheel (30) intermeshing transmission forms second group of square shape gear cluster, the second follower (22) is by anti-tooth flywheel A(26) with rear rotating shaft (35), be fixedly connected with, the second flower wheel (27) is arranged on cycle frame, the second power-assisted wheel (30) and positive tooth flywheel B(31) be fixedly connected with, positive tooth flywheel B(31) with rear rotating shaft (35) normal-running fit, rear axle housing (33) is by positive tooth flywheel B(31), anti-tooth flywheel C(36) with rear rotating shaft (35), be connected,
Also comprise the speed-changing mechanism formed by power-transfer clutch, gear teeth wheels, described power-transfer clutch comprises pellet power-transfer clutch (40), clutch Cang Gai (43), between pellet power-transfer clutch (40), clutch Cang Gai (43), one group of pellet (44) is set, pellet power-transfer clutch (40) and rear rotating shaft (35) normal-running fit, clutch Cang Gai (43) and rear rotating shaft (35) bearing fit; Between clutch Cang Gai (43) and rear axle housing (33), the gear teeth wheels are set, described gear teeth wheels consist of internally toothed annulus (37), three planetary wheels (38) and the sun gear (39) of engaged transmission, sun gear (39) is by anti-tooth flywheel C(36) with rear axle housing (33), be connected, clutch Cang Gai (43), internally toothed annulus (37) middle part all arrange corresponding strong tooth and connect by brake spring (45) elasticity.
2. bicycle transmission shifting mechanism as claimed in claim 1, is characterized in that, between described pellet power-transfer clutch (40), clutch Cang Gai (43), 3-6 pellet (44) is set; Described speed-changing mechanism outer setting housing (46) and case lid (47), housing (46) is by bearing J(42) with rear rotating shaft (35) normal-running fit and by nut A(41 is set) locking; Three planetary wheels (38) are arranged on case lid (47).
3. bicycle transmission shifting mechanism as claimed in claim 1, is characterized in that the first driving wheel (9), the first follower (5), the first flower wheel (12), first power-assisted of intermeshing transmission taken turns equal 45 degree interlocks 90 degree vertical-transmissions between (11); Equal 45 degree interlock 90 degree vertical-transmissions between the second driving wheel (21), the second follower (22), the second flower wheel (27), the second power-assisted wheel (30).
4. bicycle transmission shifting mechanism as claimed in claim 1, is characterized in that described the first driving wheel (9), the first follower (5), the first flower wheel (12), the first power-assisted wheel (11), the second driving wheel (21), the second follower (22), the second flower wheel (27), the second power-assisted wheel (30) are screw bevel gear.
5. bicycle transmission shifting mechanism as claimed in claim 1, it is characterized in that the first driving wheel (9) and the first follower (5) engaged transmission, the first follower (5) and the first flower wheel (12) engaged transmission, the first flower wheel (12) and first power-assisted wheel (11) engaged transmission, the first power-assisted wheel (11) and the first driving wheel (9) engaged transmission; The second driving wheel (21) and the second follower (22) engaged transmission, the second follower (22) and the second flower wheel (27) engaged transmission, the second flower wheel (27) and second power-assisted wheel (30) engaged transmission, the second power-assisted wheel (30) and the second driving wheel (21) engaged transmission.
6. bicycle transmission shifting mechanism as claimed in claim 1, it is characterized in that the first driving wheel (9), imput shaft (7) are fixedly connected with by sunk key is set, the first flower wheel (12), imput shaft (7) be by bearings D (19) normal-running fit, the first power-assisted wheel (11) be arranged on the front end cover B (13) of bicycle upper and with its normal-running fit.
7. bicycle transmission shifting mechanism as claimed in claim 1, the upper front case A(10 that installs of imput shaft (7) that it is characterized in that the first driving wheel (9) outer end), front case A(10), imput shaft (7) is by bearing B(8), front end cover A(6) normal-running fit.
8. bicycle transmission shifting mechanism as claimed in claim 1, it is characterized in that driven shaft (1), the second driving wheel (21) are fixedly connected with by sunk key is set, the second follower (22), rear rotating shaft (35) are by anti-tooth flywheel A(26) normal-running fit, the second flower wheel (27) is arranged on the front end cover D(28 of bicycle) upper and with its normal-running fit.
9. bicycle transmission shifting mechanism as claimed in claim 1, it is characterized in that driven shaft (1) outer setting sleeve pipe (2), sleeve pipe (2) one ends arrange driven shaft housing A(3), the first follower (5) is by bearing A(4) and driven shaft housing A(3) normal-running fit; Driven shaft (1) outer setting sleeve pipe (2), sleeve pipe (2) other end arranges driven shaft housing B(3a), the second driving wheel (21) is by bearing E(20) and driven shaft housing B(3a) normal-running fit.
10. bicycle transmission shifting mechanism as claimed in claim 1, the upper front case B(23 that installs of rear rotating shaft (35) that it is characterized in that the second follower (22) outer end), front case B(23), rear rotating shaft (35) is by bearing F(24) normal-running fit locking by nut (25) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320321404 CN203345152U (en) | 2013-06-05 | 2013-06-05 | Bicycle transmission speed change mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320321404 CN203345152U (en) | 2013-06-05 | 2013-06-05 | Bicycle transmission speed change mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203345152U true CN203345152U (en) | 2013-12-18 |
Family
ID=49745079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320321404 Expired - Fee Related CN203345152U (en) | 2013-06-05 | 2013-06-05 | Bicycle transmission speed change mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203345152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103287545A (en) * | 2013-06-05 | 2013-09-11 | 杭州华杭电子电器有限公司 | Bicycle transmission speed changing mechanism |
| CN107082103A (en) * | 2017-04-10 | 2017-08-22 | 缙云县刀浪车业有限公司 | Chainless bicycle |
-
2013
- 2013-06-05 CN CN 201320321404 patent/CN203345152U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103287545A (en) * | 2013-06-05 | 2013-09-11 | 杭州华杭电子电器有限公司 | Bicycle transmission speed changing mechanism |
| CN103287545B (en) * | 2013-06-05 | 2015-10-28 | 杭州华杭电子电器有限公司 | Bicycle transmission shifting mechanism |
| CN107082103A (en) * | 2017-04-10 | 2017-08-22 | 缙云县刀浪车业有限公司 | Chainless bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20140605 |