CN2740527Y - Speed variator of bottom bracket bearing for bicycle - Google Patents
Speed variator of bottom bracket bearing for bicycle Download PDFInfo
- Publication number
- CN2740527Y CN2740527Y CN 200420068975 CN200420068975U CN2740527Y CN 2740527 Y CN2740527 Y CN 2740527Y CN 200420068975 CN200420068975 CN 200420068975 CN 200420068975 U CN200420068975 U CN 200420068975U CN 2740527 Y CN2740527 Y CN 2740527Y
- Authority
- CN
- China
- Prior art keywords
- speed
- axis
- gear
- change
- housing box
- 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
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a speed changer on the centre shaft of a bicycle, comprising a roller cone, ball bearings, a centre shaft, a casing box, a bicycle frame, pedals, etc. The casing box is arranged on the centre shaft of the bicycle, a centre shaft and a rachis are arranged in the casing box in parallel, and the roller cone, a roller cone gear and a speed changing bull gear are arranged on the centre shaft. A common speed gear and a change speed pinion are arranged on the rachis, the common speed gear on the rachis and a common speed gear on the centre shaft are engaged with each other through the toggle of a gear lever, or the change speed pinion on the rachis is engaged with the speed changing bull gear on the centre shaft, which can realize the purpose of speed change and speed fixedness in the travelling of the bicycle. The diameter of the speed changing bull gear is two times as large as the diameter of the change speed pinion, so the running speed of the bicycle can reach above 30 kms / hour; besides, big alteration is not needed towards the bicycle, so the utility model has the advantages of simple structure and low manufacturing cost.
Description
Technical field:
The utility model discloses a kind of bicycle speed-varying unit, particularly a kind of bicycle middle shaft change-speed box.
Background technology:
Bicycle is a kind of vehicle that people use always, China is a bikedom especially, bicycle effort and speed commonly used in the market are slow, therefore people constantly improve existing bicycle, as China Patent No. is that ZL012344729 " bicycle speed-varying unit and variable speed bicycle thereof " promptly is the improvement that existing bicycle is carried out, it comprises state's frame, front fork, handlebar, antero posterior axis, the axis pedal, freewheel, also comprise input, the change-speed box of the sprocket wheel that all is provided with on the output shaft, sprocket wheel on the input shaft links to each other with the axis sprocket wheel, sprocket wheel on the output shaft links to each other with flywheel, though this bicycle speed is faster, but its structure is too complicated, need do bigger change to existing bicycle structure, the self-moving vehicle manufacturing cost is high-leveled and difficult to promote the use of on market.
The utility model content:
The purpose of this utility model will provide a kind of structure extremely simple exactly, does not need existing bicycle is made the too many low bicycle speed-varying unit of bicycle manufacturing cost that improves.
The purpose of this utility model is achieved like this, it comprises, gear wheel, ball, axis, outer housing box, bicycle rack, pedal crank, pedal crank are contained in the two ends, the left and right sides of axis, outside the bicycle middle shaft position is provided with housing box, be provided with rotating axis and floral axis side by side in the housing box outside, pass across outer housing box about axis, the floral axis right-hand member passes outer housing box and is respectively equipped with flat fast gear in the housing box outside on axis, the speed change big gear wheel is provided with gear wheel gear and gear wheel in the housing box external right side pedal crank outside successively; Be provided with flat fast gear outside on floral axis in the housing box, change speed pinion, the outer floral axis right-hand member of housing box also is provided with flat fast gear outside, and with axis on the cutter teeth tooth mesh.
Gear wheel and gear wheel gear are fixedly connected.
Be located in the housing box outside flat fast gear on the axis, speed change big gear wheel can be respectively with the floral axis that is located in the outer housing box on flat fast gear, the engagement of change speed pinion tooth.
Flat speed wheel on the floral axis in the outer housing box links with change speed pinion and is in the same place, and can move on floral axis.
Shifter bar is stuck in the flat fast gear in the outer housing box on the floral axis and the both sides of change speed pinion, can stir flat fast gear and the position of change speed pinion on floral axis adjusted on it.
The diameter of change speed pinion is half of speed change big gear wheel.
Floral axis is designed to the concavo-convex groove structure.
The utility model bicycle middle shaft change-speed box, be that the middle axle construction of existing bicycle is improved, make the bicycle after the improvement faster more than 1 times than existing bicycle speed, per hour reach more than 30 kilometers, it is more laborsaving to ride, simple in structure, can reequip use to existing bicycle, and manufacturing cost is low, can not increase existing bicycle manufacturing cost, very easily promotes the use of.
Description of drawings:
Fig. 1 is the utility model construction profile cross-sectional schematic.
Fig. 2 be the utility model Fig. 1 along A-A to the structure cross-sectional schematic.
Among the figure: 1. gear wheel, 2. ball, 3. flat fast gear, 4. axis, 5. speed change big gear wheel, 6. shifter bar, 7. change speed pinion, 8. floral axis, 9. outer housing box, 10. positioning bead, withstand shifter bar 6,11. gear wheel gears, 12. bicycle racks, 13. pedal cranks.
The specific embodiment:
As shown in Figure 1, pedal crank 13 is contained in the two ends, the left and right sides of axis 4, outer housing box 9 is located at axis 4 positions of bicycle rack 12, be contained in speed change big gear wheel 5 and the change speed pinion 7 teeth engagement that is loaded on the floral axis 8 on the axis 4, shifter bar 6 is fixed in the outer housing box 9 by positioning bead 10, shifter bar 6 is stuck in the flat fast gear 3 in the outer housing box 9 and the right and left of change speed pinion 7 on the floral axis 8, by stirring of shifter bar 6 change speed pinion 7 and flat fast gear 3 is slided on floral axis 8.
As shown in Figure 2 the bicycle middle shaft change-speed box along the A-A of Fig. 1 to structure cross-sectional plane scheme drawing, axis 4, floral axis 8 parallel being located in the outer housing box 9 arranged side by side, axis 4 two ends pass across outer housing box 9, on the two ends, the left and right sides of axis 4, pedal crank 13 is housed respectively, right threading turn 13 and outside be provided with gear wheel gear 11 and gear wheel 1 on the axis 4 between housing box 9 right edge, gear wheel gear 11 is fixed together with gear wheel 1, outer housing box is passed on floral axis 8 the right, the right and left is fixed with speed change big gear wheel 7 peaceful fast gears 3 respectively in the outer housing box 9 on axis 4, axis 4 rotates in the housing box 9 outside by ball 2, design has concavo-convex groove on the floral axis 8, be provided with flat fast gear 3 and change speed pinion 7 outside on floral axis 8 in the housing box 9, flat fast gear 3 is fixedly connected with change speed pinion 7 on it, housing box 9 external right sides are fixedly connected with flat fast gear 3 outside on floral axis 8, flat fast gear 3 on the floral axis 8 in flat fast gear 3 on the axis 4 in the housing box 9 and the outer housing box 9 is by the tooth engagement outside, and outside in the housing box 9 the speed change big gear wheel 5 on the axis 4 mesh with change speed pinion 7 teeth on the floral axis 8; The outer gear wheel gear 11 that is loaded on the axis 4 of housing box 9 meshes by tooth with flat fast gear 3 on the floral axis 8 outside, the change speed pinion 7 that shifter bar 6 is stuck on the floral axis 8 reaches the left and right sides of the flat fast gear 3 of binding with it, stir the change speed pinion 7 on the floral axis and the flat fast gear 3 that links with it moves by shifter bar 6 on floral axis 8, make the speed change big gear wheel 5 mutual teeth engagements on change speed pinion 7 and the axis 8, and the jump out of mesh simultaneously of the flat fast gear 3 on the flat fast gear 3 on the axis 4 in the housing box 9 and the floral axis 8 outside, perhaps make flat fast gear 3 engagements on flat fast gear 3 and the floral axis 8 on the axis 4 in the housing box outside 9, the diameter of speed change big gear wheel 5 is times of change speed pinion 7, and axis 4 and floral axis 8 rotate by being contained in the ball 2 that reaches on the outer housing box 9 on the bicycle rack.
Its concrete working process is as follows: step pedal crank 13 when the people rides bicycle, the trailing wheel that chain on the gear wheel 1 drives bicycle rotates, gear wheel 1 links together with gear wheel gear 11, gear wheel 11 and gear wheel gear 11 rotate the outer housing box 9 right lateral flat fast gears 3 that drive on the floral axis 8 and rotate, flat fast gear 3 on the axis 4 in the housing box 9 and the 3 mutual teeth engagements of the flat fast gear on the floral axis 8 outside, flat fast gear 3 is the same with the diameter of gear wheel gear 11, can bicycle at the uniform velocity be advanced.When stirring shifter bar 6 change speed pinion 7 on the floral axis 8 is meshing with each other with speed change big gear wheel 5 on the axis 4, when flat fast gear 3 on the axis 4 in the housing box 9 and flat fast gear 3 separating tooths on the floral axis 8 mesh outside, driving floral axis 8 by the 9 outer flat fast gears 3 of the housing box outside on the floral axis 4 when gear wheel 11 rotates rotates, and the speed change big gear wheel 5 that the change speed pinion 7 on the floral axis 8 drives on the axis 4 is rotated, because of change speed pinion 7 half of diameter of speed change big gear wheel 5, thereby make the bicycle can be fast againly to overtake, thereby reach the speed change purpose of travelling than original speed; The utility model bicycle speed-varying unit not only can be loaded on the ordinary bicycle, but also can be contained on the Electrical Bicycle, can reach the speed change purpose equally.
Claims (7)
1, a kind of bicycle middle shaft change-speed box, comprise, gear wheel (1), ball (2), axis (4), outer housing box (9), bicycle rack (12), pedal crank (13), pedal crank (13) is contained in the two ends, the left and right sides of axis (4), it is characterized in that: housing box (9) outside bicycle middle shaft (4) position is provided with, be provided with rotating axis (4) and floral axis (8) outside in the housing box (9) side by side, pass across outer housing box (9) about axis (4), floral axis (8) right-hand member passes outer housing box (9) and be respectively equipped with flat fast gear (3) in the housing box (9) outside axis (4) is gone up, speed change big gear wheel (5) is provided with gear wheel gear (11) and gear wheel (1) in housing box (9) the external right side pedal crank 13 outside successively; In going up outer housing box (9), floral axis (8) is provided with flat fast gear (3), change speed pinion (7), and outer floral axis (8) right-hand member of housing box (9) also is provided with flat fast gear (3) outside, and meshes with gear wheel gear (11) tooth on the axis (4).
2, bicycle middle shaft change-speed box according to claim 1 is characterized in that: gear wheel (1) is fixedly connected with gear wheel gear (11).
3, bicycle middle shaft change-speed box according to claim 1 and 2, it is characterized in that: be located in the housing box (9) outside flat fast gear (3) on the axis (4), speed change big gear wheel (5) can be respectively with the floral axis (8) that is located in the outer housing box (9) on flat fast gear (3), the engagement of change speed pinion (7) tooth.
4, bicycle middle shaft change-speed box according to claim 1 is characterized in that: flat speed wheel (3) and change speed pinion (7) that floral axis (8) is gone up in the outer housing box (9) link together, can go up at floral axis (8) and move.
5, according to claim 1 or 4 described bicycle middle shaft change-speed boxs, it is characterized in that: shifter bar (6) is stuck in floral axis (8) and goes up the interior flat fast gear (3) of outer housing box (9) and the both sides of change speed pinion (7), can stir flat fast gear (3) and the position of change speed pinion (7) on floral axis (8) adjusted on it.
6, according to claim 1 or 3 described bicycle middle shaft change-speed boxs, it is characterized in that: the diameter of change speed pinion (7) is half of speed change big gear wheel (5).
7, bicycle middle shaft change-speed box according to claim 1 is characterized in that: floral axis (8) is designed to the concavo-convex groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420068975 CN2740527Y (en) | 2004-10-18 | 2004-10-18 | Speed variator of bottom bracket bearing for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420068975 CN2740527Y (en) | 2004-10-18 | 2004-10-18 | Speed variator of bottom bracket bearing for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2740527Y true CN2740527Y (en) | 2005-11-16 |
Family
ID=35350821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420068975 Expired - Fee Related CN2740527Y (en) | 2004-10-18 | 2004-10-18 | Speed variator of bottom bracket bearing for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2740527Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176262A (en) * | 2017-06-20 | 2017-09-19 | 李倩 | One kind is without chain flexible shaft drived bicycle |
-
2004
- 2004-10-18 CN CN 200420068975 patent/CN2740527Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176262A (en) * | 2017-06-20 | 2017-09-19 | 李倩 | One kind is without chain flexible shaft drived bicycle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202130548U (en) | Four-rod driving bicycle | |
| CN2740527Y (en) | Speed variator of bottom bracket bearing for bicycle | |
| CN2785966Y (en) | Variable speed drive unit for counter-ride of bicycles | |
| CN204592197U (en) | Stepless speed variator | |
| CN2688601Y (en) | Rapid power saver of bicycle | |
| CN201288797Y (en) | Dual drive coordinated type flexible shifter | |
| CN201863977U (en) | Bicycle | |
| CN201287811Y (en) | Bicycle transmission device | |
| CN200974578Y (en) | Bicycle having gear box | |
| CN2830255Y (en) | Wheel shaft type speed variable bicycle | |
| CN2665460Y (en) | Novel mechanical speed regulation apparatus | |
| CN2680567Y (en) | Bicycle labor saving and speed boosting apparatus | |
| CN1183003C (en) | Power saving driver for man power vehicle | |
| CN201457676U (en) | Pedal-powered tricycle gearbox | |
| CN2795026Y (en) | Chainless bicycle | |
| CN2343072Y (en) | Speed variator for bicycle | |
| CN201078444Y (en) | Transmission mechanism of body building cycle magnetic-control wheel | |
| CN2707614Y (en) | Teeth driving bicycle | |
| CN2189588Y (en) | Net-disk tangent speed-changing driving device for bicycle | |
| CN200951824Y (en) | Driving mechanism of planetary gear bicycle | |
| CN2091815U (en) | Multi-speed light cycle without chain | |
| CN2639161Y (en) | Labour-saving variable-speed bicycle | |
| CN2625278Y (en) | Motorcycle driving gear | |
| CN2211409Y (en) | High-speed labor-saving bicycle | |
| CN2758186Y (en) | Tail reverse speed gear two stage speed changing rear axle device of three wheel motorcycle |
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 |