CN2214353Y - Bicycle speed variable driving gear - Google Patents
Bicycle speed variable driving gear Download PDFInfo
- Publication number
- CN2214353Y CN2214353Y CN 94236212 CN94236212U CN2214353Y CN 2214353 Y CN2214353 Y CN 2214353Y CN 94236212 CN94236212 CN 94236212 CN 94236212 U CN94236212 U CN 94236212U CN 2214353 Y CN2214353 Y CN 2214353Y
- Authority
- CN
- China
- Prior art keywords
- gear
- bicycle
- variable
- driving gear
- main shaft
- 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.)
- Expired - Fee Related
Links
- 230000007704 transition Effects 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 27
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 10
- 230000004913 activation Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to a speed variable drive gear for bicycles, comprising a driving gear which is fixed to the main shaft of pedals, an intermediate gear which can axially slide and which is sheathed on an adjacent transition shaft and is engaged with the driving gear, a drive gear which can axially slide and which is engaged with a driven gear fixed on a shaft sleeve and is also sheathed on the transition axle, and a shaft sleeve which is movably sheathed on the main shaft of pedals. The utility model has the advantages of simple structure, reliability, long service life, convenient repair, installation, operation, a plurality of speed ratios, etc., and the whole is closed.
Description
The utility model relates to a kind of bicycle and man power and drive transmission system, particularly a kind of derailleur that is installed on the foot-operated activation point belongs to bicycle drive.
The driving device of bicycle mainly uses the transmission system of two kinds of patterns to reach the purpose that drives speed change at present, a kind of speed change pattern i.e. so-called " three fly " is contained on the hind axle of bicycle this, but be used for from actual making, this transmission system is comparatively difficult on repairing, trailing wheel must be pulled down generally that dismantle behind the in-to-in parts could place under repair again, equally it is installed also quite trouble, Given this, few people have used this variable-speed drive at present.Another kind of speed change pattern is exactly the transmission system of our at present common change sprocket wheel method, it by widespread usage on various racing cars, mountain bike, adjust the combination of chain on the different-diameter sprocket wheel again and realize the speed change purpose by dialling, but there is following deficiency in the transmission system of this change chain sprocket structure, first its no chain guard outside all speed changing structure is exposed to, is stained with mud easily, cause chain and sprocket wheel to wear and tear fast, influence its service life.The second, its middle transition pressing wheel mechanism breaks easily, causes it to be difficult to realize speed change, can't use even.The 3rd, because no chain guard, the rider usually can advance trousers clamp in chain and the sprocket wheel to go, and it is pulled open or is stained with greasy dirt.
The purpose of this utility model is in order to overcome the deficiency that existing variable-speed drive device for bicycle exists, and provides a kind of direct mount sealed up on foot-operated activation point, maintenance, installs, and uses all variable-speed drive device for bicycle easily.
The purpose of this utility model is finished by following technical solution, it mainly comprises the step main shaft, drive sprocket and change-gear set, on the step main shaft, be fixed with driving gear, this driving gear is meshed with intermediate gear on being placed in transition axis, also is provided with transmission gear on this transition axis, and this transmission gear is meshed with driven gear on being fixed on axle sleeve, axle sleeve is that kink also can rotate on the step main shaft mutually, and drive sprocket is connected on the end of axle sleeve.
Driving gear described in the utility model has two at least, they each with transition axis on the intermediate gear of axial slip synchronously of corresponding setting be meshed, and each ingear number of teeth has nothing in common with each other, and has shift fork to match with it.
Described driven gear at least also has two, they each with transition axis on the transmission gear of axial slip synchronously of corresponding setting be meshed, and each ingear number of teeth also has nothing in common with each other, and has shift fork to match with it.
Driving gear described in the utility model and intermediate gear respectively have two groups to be connected with mutually, and driven gear and transmission gear then have three pairs to be connected with, and constitute the variation of six kinds of transmission speeds.
The utility model all is positioned in driving gear, intermediate gear, transmission gear, driven gear and transition axis in the housing, realizes sealing, and an end of axle sleeve stretches out outside housing and at external part and is fixed with drive sprocket.
In addition, axle sleeve described in the utility model is to be nested with on the step main shaft by two antifriction-bearing boxs.
Description of drawings is as follows:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a mounting structure scheme drawing of the present utility model.
Below will the utility model is further introduced by accompanying drawing: step main shaft 1 be positioned on the housing 3 two ends axle beds by two bearings 2, side is fixedly connected with two driving gears 4 that the number of teeth is different on it, and opposite side is equipped with an axle sleeve 6 by two bearings 5 and can rotates mutually with step main shaft 1.One end of this axle sleeve 6 stretches out in housing 3 outsides, and is fixed with drive sprocket 7 at this external part, and the housing of axle sleeve 6 fixedly connected to the inner side three driven gears 8 that the number of teeth is different.Adjacently with step main shaft 1 be provided with a transition axis 9, it also is placed in the two ends of housing 3 by the bearing 10 at two ends, with two driving gears, 4 corresponding two intermediate gears 11 that are meshed with it that on transition axis 9, are equipped with, this intermediate gear 11 can be on transition axis 9 axial slip synchronously, and the realization This move is finished by exterior shift fork 12, because driving gear 4 is different with two groups of total number of teeth in engagement of intermediate gear 11, thereby above-mentioned two groups of gears mesh respectively the back its transmitting ratio also different, can realize two kinds of speed change transmissions.Corresponding three transmission gears 13 of ingear respectively that on transition axis 9, also are equipped with it with driven gear 8, these three transmission gears 13 also can be on transition axis 9 axial slip synchronously, and also finish the axial slip interlock by exterior shift fork 12.Because each number of teeth of engagement group also has nothing in common with each other between transmission gear 13 and the driven gear 8, their transmission engage ratio are also different, thereby can realize three kinds of speed change transmissions, combine with the front, and above-mentioned change-gear set can be realized the variation of six kinds of transmission speeds altogether.
In practice,, can increase or reduce the speed change number of transmission, realize the variation of multiple transmission speed as increasing or reduce transmission gears in mesh group.Above-mentioned variable-speed drive is installed on the bicycle pedals activation point, ordering about the step main shaft by the motion of step main shaft two ends step rotates, engagement by driving gear and intermediate gear, the engagement of transmission gear and driven gear, power is exported from axle sleeve one end, pass through drive sprocket again and drive the back sprocket rotation, thereby drive wheels travels forward.
The utility model compared with prior art, have simple in structure, reliable, integrally closed, long service life, maintenance, install, use all convenient, the characteristics such as speed ratio is many.
Claims (6)
1, a kind of variable-speed drive device for bicycle, it comprises step main shaft, drive sprocket, variable gear, it is characterized in that being fixed with on the step main shaft (1) driving gear (4), this driving gear (4) is meshed with intermediate gear (11) on being placed in transition axis (9), on this transition axis (9), also be provided with transmission gear (13), and this transmission gear (13) is meshed with driven gear (8) on being fixed on axle sleeve (6), axle sleeve (6) kink is on step main shaft (1), and drive sprocket (7) is connected on the end of axle sleeve (6).
2, variable-speed drive device for bicycle as claimed in claim 1, it is characterized in that described driving gear (4) has two at least, they respectively are meshed with the intermediate gear of axial slip synchronously (11) of the last corresponding setting of transition axis (9), and each ingear number of teeth has nothing in common with each other, and has shift fork (12) to cooperate with it.
3, variable-speed drive device for bicycle as claimed in claim 1 or 2, it is characterized in that described driven gear (8) has two at least, they each with transition axis (9) but the transmission gear (13) of going up the axial slip of corresponding setting be meshed, and each ingear number of teeth has nothing in common with each other, and has shift fork (12) to cooperate with it.
4, variable-speed drive device for bicycle as claimed in claim 3 it is characterized in that described driving gear (4) and intermediate gear (11) have two groups to be meshing with each other respectively, and driven gear (8) has three groups to be meshing with each other respectively with transmission gear (13).
5, variable-speed drive device for bicycle as claimed in claim 4, it is characterized in that described driving gear (4), intermediate gear (11), transmission gear (13), driven gear (8) and transition axis (9) all are positioned in the housing (3), an end of axle sleeve (6) stretches out outside housing (3) and at external part and is fixed with drive sprocket (7).
6, variable-speed drive device for bicycle as claimed in claim 5 is characterized in that described axle sleeve (6) is nested with on step main shaft (1) by two antifriction-bearing boxs (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236212 CN2214353Y (en) | 1994-12-29 | 1994-12-29 | Bicycle speed variable driving gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236212 CN2214353Y (en) | 1994-12-29 | 1994-12-29 | Bicycle speed variable driving gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2214353Y true CN2214353Y (en) | 1995-12-06 |
Family
ID=33844243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94236212 Expired - Fee Related CN2214353Y (en) | 1994-12-29 | 1994-12-29 | Bicycle speed variable driving gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2214353Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20100214A1 (en) * | 2010-02-12 | 2011-08-13 | Eligio Bianchi | CHANGE OF SPEED TO SLIDING GEARS, PARTICULARLY FOR VELOCIPEDI. |
| CN104702046A (en) * | 2013-12-09 | 2015-06-10 | 吴迪 | Speed governing generator unit |
-
1994
- 1994-12-29 CN CN 94236212 patent/CN2214353Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20100214A1 (en) * | 2010-02-12 | 2011-08-13 | Eligio Bianchi | CHANGE OF SPEED TO SLIDING GEARS, PARTICULARLY FOR VELOCIPEDI. |
| CN104702046A (en) * | 2013-12-09 | 2015-06-10 | 吴迪 | Speed governing generator unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |