CN2401446Y - Inner speed variating wheel for bicycle - Google Patents
Inner speed variating wheel for bicycle Download PDFInfo
- Publication number
- CN2401446Y CN2401446Y CN 99250568 CN99250568U CN2401446Y CN 2401446 Y CN2401446 Y CN 2401446Y CN 99250568 CN99250568 CN 99250568 CN 99250568 U CN99250568 U CN 99250568U CN 2401446 Y CN2401446 Y CN 2401446Y
- Authority
- CN
- China
- Prior art keywords
- ratchet
- speed change
- wheel
- side cover
- bicycle
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- 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
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- Structure Of Transmissions (AREA)
Abstract
The utility model belongs to an inner speed changing wheel disc of a bicycle, which is designed for solving the problem that the speed ratio a speed changing wheel disc of the existing bicycle is unreasonably allocated; the utility model is composed of a crank, a transmission mechanism of a planet gear, a side cover and a chain wheel; the motion state of a planet gear is determined through a speed changing ratchet pawl; therefore, the purpose that the running speed of a bicycle is changed is reached. The speed changing wheel disc has the characteristics of compact structure, small size, flexible transmission, rational transmission ratio, etc. The utility model can be applicable to other human power bicycles.
Description
The utility model belongs to that human powered vehicle such as bicycle uses, and can change the bicycle internal speed-changing wheel disc of system of vehicle transmission ratio.
Human powered vehicles such as bicycle when meeting different road surface, for laborsaving, should change the transmitting ratio of its chain sprocket drive, to adapt to the needs of riding in the process of moving at any time.(patent No. is Chinese patent: the transmission system of a kind of " automatic speed-transformation of bicycle wheel disc " 97219554.8) is provided, has preferably resolved this difficult problem.It is made up of crank, planetary gear mechanism, sprocket wheel and side cover etc.When riding resistance is big, can realize speed change automatically.Because this device is to be driving wheel by sun gear when low speed is exercised, drive planetary gear mechanism and move, so the speed when low speed driving is slower, make the bicyclist feel inconvenient.
The utility model can change the bicycle internal speed-changing wheel disc of human powered vehicle transmitting ratios such as bicycle according to the deficiencies in the prior art and a kind of convenience of design-calculated, suitable.
The utility model is realized by following measure.The internal speed-changing wheel disc mainly is made up of crank, planetary gear mechanism, side cover and sprocket wheel.In the planetary gear mechanism of speed change wheel disc, the planetary wheel rectangular distribution more than three is installed in by compensating-gear shaft between the inside and outside side cover of speed change wheel disc; The internally toothed annulus that is meshed with planetary wheel is also between inside and outside side cover; Sprocket wheel is concentric with internally toothed annulus, and is fixed together; The sun gear that is meshed with planetary wheel is fixed on the speed change ratchet; Speed change ratchet, wheel disc and crank are installed on the bicycle middle shaft successively; Planetary inside and outside side cover is installed together by crank dial axis and crank connecting link; There is interior ratchet to be meshed between the inside and outside side cover with internally toothed annulus; Have ratchet to be meshed with the speed change ratchet on the vehicle frame, this ratchet links by the speed change handle on control line and the handlebar; Have on the inside cover one the braking ratchet can with the speed change ratchet in mesh.
During bicycle running, ratchet and speed change ratchet on the vehicle frame are broken away from by the speed change handle.Step crank forward, the crank dial axis drives inside and outside side cover, and the interior ratchet between the inside and outside side cover drives internally toothed annulus and sprocket wheel, makes bicycle to overtake.When the needs speed change, ratchet and speed change ratchet engaged on the speed change handle control vehicle frame are fixed speed change ratchet and sun gear.This moment, the crank dial axis drives inside and outside side cover and planetary wheel rotates when stepping crank, and planetary wheel drives internally toothed annulus and sprocket wheel, rotates with higher speed, and bicycle travels with fast speed.This moment, the rotating speed of internally toothed annulus was higher than inside and outside side cover, so interior ratchet and internally toothed annulus jump out of mesh in the middle of the inside and outside side cover.
When this speed change wheel disc is installed on the pedal brake bike, need glancing impact, step crank backward, the crank dial axis drives inside and outside side cover, engagement turns round whole speed change wheel disc in braking ratchet on the inside cover and the speed change ratchet, by backpedalling brake with bicycle brake.
The utility model has the advantages that Speed Ratio Distribution is more reasonable, speed change is simple, convenient, reliable, and the bicycle and the rickshaw that are particularly suitable for both urban and rural area use.
Accompanying drawing 1 is a structural representation of the present utility model, and accompanying drawing 2 is for the left side of accompanying drawing 1 is looked, part sectional view.(1) is sprocket wheel among the figure; (2) be internally toothed annulus; (3) be inside cover; (4) be outboard cover; (5) be the satellite gear axle sleeve; (6) be compensating-gear shaft; (7) be planetary wheel; (8) be crank; (9) be dial axis; (10) be sun gear; (11) be the braking ratchet; (12) be the speed change ratchet; (13) be interior ratchet.
An existing accompanying drawings embodiment of the present utility model.The speed change wheel disc is made up of crank, planetary gear mechanism, side cover and sprocket wheel.In the planetary gear mechanism of speed change wheel disc, three planetary wheels (7) rectangular distribution is installed in by compensating-gear shaft (6) between the inside and outside side cover (3) (4) of speed change wheel disc; The internally toothed annulus (2) that is meshed with planetary wheel (7) also is positioned between the inside and outside side cover (3) (4); Sprocket wheel (1) is concentric with internally toothed annulus (2), and is fixed together; The sun gear that is meshed with planetary wheel (10) is fixed on the speed change ratchet (12); Speed change ratchet (12), wheel disc and crank (8) are installed on the bicycle middle shaft successively; The inside and outside side cover (3) (4) that planetary wheel (7) is installed links together by crank dial axis (9) and crank (8); There is interior ratchet (13) to be meshed between the inside and outside side cover with internally toothed annulus (2); Have ratchet to be meshed with speed change ratchet (12) on the vehicle frame, this ratchet links by the speed change handle on control line and the handlebar; There is a braking ratchet (11) to mesh on the inside cover (3) with speed change ratchet (12) is interior.
In the time of to overtake, speed change ratchet (12) is unfixing, rotates with wheel disc.Crank dial axis (9) drives inside and outside side cover (3) (4), and inside and outside side cover drives internally toothed annulus (2) and sprocket wheel (1) rotation by interior ratchet (13).When needing fast running, that speed change ratchet (12) is fixing.Crank dial axis this moment (9) drives inside and outside side cover, and inside and outside side cover drives planetary wheel (7) around sun gear (10) rotation by compensating-gear shaft (6), drives the rotation of internally toothed annulus and sprocket wheel simultaneously.
Claims (1)
1, a kind of bicycle internal speed-changing wheel disc, form by crank, planetary gear mechanism, side cover and sprocket wheel, it is characterized in that: in the planetary gear mechanism of speed change wheel disc, planetary wheel more than three (7) rectangular distribution is installed in by compensating-gear shaft (6) between the inside and outside side cover (3) (4) of speed change wheel disc; The internally toothed annulus that is meshed with planetary wheel (2) is also between inside and outside side cover; Sprocket wheel (1) is concentric with internally toothed annulus (2), and is fixed together; The sun gear that is meshed with planetary wheel (10) is fixed on the speed change ratchet (12); Speed change ratchet, wheel disc and crank (8) are installed on the bicycle middle shaft successively; Planetary inside and outside side cover is installed to link together by crank dial axis (9) and crank (8); There is interior ratchet (13) to be meshed between the inside and outside side cover with internally toothed annulus (2); Have ratchet to be meshed with speed change ratchet (12) on the vehicle frame, this ratchet links by the speed change handle on control line and the handlebar; There is a braking ratchet (11) to mesh on the inside cover with speed change ratchet (12) is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250568 CN2401446Y (en) | 1999-12-07 | 1999-12-07 | Inner speed variating wheel for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250568 CN2401446Y (en) | 1999-12-07 | 1999-12-07 | Inner speed variating wheel for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2401446Y true CN2401446Y (en) | 2000-10-18 |
Family
ID=34035280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99250568 Expired - Fee Related CN2401446Y (en) | 1999-12-07 | 1999-12-07 | Inner speed variating wheel for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2401446Y (en) |
-
1999
- 1999-12-07 CN CN 99250568 patent/CN2401446Y/en not_active Expired - Fee Related
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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 |