CN201198359Y - Novel speed variator for bicycle - Google Patents
Novel speed variator for bicycle Download PDFInfo
- Publication number
- CN201198359Y CN201198359Y CNU2007203052855U CN200720305285U CN201198359Y CN 201198359 Y CN201198359 Y CN 201198359Y CN U2007203052855 U CNU2007203052855 U CN U2007203052855U CN 200720305285 U CN200720305285 U CN 200720305285U CN 201198359 Y CN201198359 Y CN 201198359Y
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- CN
- China
- Prior art keywords
- ratchet
- gear
- bicycle
- planet
- clamping sheet
- 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
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Abstract
A novel gear change mechanism used for a bicycle includes a planet gear assembly and a fixed ratchet arranged in a middle shaft sleeve; the planet gear assembly includes a roller cone of a driven gear, at least three planet gears, a ratchet gear of a drive wheel, a winch, a pawl, an inner clamping sheet and an outer clamping sheet. The utility model is characterized in that the roller cone of the driven gear, the planet gears and the ratchet gear of the drive wheel are clamped as a whole body by the inner clamping sheet and the outer clamping sheet to form the planet gear assembly; the ratchet gear of the drive wheel of the planet gear assembly is riveted on the winch; the planet gear assembly also includes the pawl of the inner clamping sheet. If fast speed is needed when riding the bicycle, only the pedal of the winch is needed to be forwards pedaled and the ratchet gear of the drive wheel, the pawl and the roller cone of the driven gear are consistent to the front at the moment. The pedal of the winch can be pedaled to the back when riding the bicycle on a slope or facing the wind, the pawl and the fixed ratchet are engaged at the moment, the planet gears rotate in situ and the roller cone of the driven gear retards and rotates positively, thus being capable of saving labor and moving forwards. The device can be reformed on a human bicycle very conveniently. The novel gear change mechanism used for a bicycle has the advantages of freely shifting the gears and easing the fatigue of legs.
Description
Technical field
The utility model relates to a kind of manpower trishaw, bicycle transmission.
Background technology
Existing bicycle change-speed box has " generation " rear axle internal speed-changing type; Its complex structure, the little moment of torsion of pitch circle are big, abrasion are big, high, the weak effect of cost.The multistage profile type of " two generations " outer speed change; Though replace gradually " generation product ", auxiliary equipment is many, volume is big, action link is many, unsuitable busy shift arbitrarily, and result of use is also bad.
The utility model summary of the invention
The utility model provides a kind of simple and practical " three generations " bicycle middle shaft speed-changing device, and it can be retrofitted on the bicycle very easily.
Take following design plan for reaching this order ground the utility model:
The novel transmission system of a kind of bicycle use, comprise planetary wheel assembly and the ratchet of deciding that is installed on the bottom bracket axle, described planetary wheel assembly comprises the ring gear gear wheel, has three planetary wheels, driving wheel ratchet gear, crank, ratchet, inside and outside holding piece at least, it is characterized in that: ring gear gear wheel, planetary wheel, driving wheel ratchet gear, held by the curb pins holding clip and to be one, constitute the planetary wheel assembly, the driving wheel ratchet gear of described planetary wheel assembly, be riveted on the crank ratchet in the planetary wheel assembly also comprises on the holding piece.Described to decide the ratchet ratchet be that directed inhour is non-return, and driving wheel ratchet gear medial surface has ratchet, and ratchet is that directed cw is non-return, installs the end face bearing between inner side plane and clamping plate additional.
Have two ratchets at least on the holding piece in the planetary wheel assembly, fluted on the ratchet, spring and top are arranged, driving wheel ratchet gear and decide ratchet and can trigger ratchet and make ratchet be in bistable state in the groove.
This device can easily be retrofitted on the existing various bicycles, and it is foot-operated to desire only to pedal crank fast forward when riding: this moment, driving wheel ratchet gear, ratchet were consistent forward with the ring gear gear wheel.It is foot-operated to kick backward when desire is laborsaving, this moment ratchet with decide ratchet meshing, crank reverses planetary wheel original place rotation, the ring gear gear wheel promptly slows down and just changes, and reaches the laborsaving purpose that moves ahead.Needn't do that any gear shift operation is particularly suitable for riding in the hills city, long-distance match or strong wind sky ride against the wind.
Description of drawings
Fig. 1 is this practical planetary wheel assembly scheme drawing
Fig. 2 decides the ratchet scheme drawing for the utility model
Fig. 3 is the utility model ratchet scheme drawing
Fig. 4 is the utility model ratchet scheme drawing
Fig. 5 is the utility model ratchet constitution diagram
The utility model is described in further detail below in conjunction with drawings and embodiments
Specific embodiment 1 is an example with Fig. 1 Fig. 5
The driving wheel ratchet gear 1 of planetary wheel assembly can drive planetary wheel 3 and 2 revolution (the planet wheel spindle riveting is on clamping plate) of follower gear gear wheel when positive hour hands rotate under crank 5 drives, thereby since clamping plate 4 have certain mass and inertia can with the assembly servo-actuated, promptly change together with the driving ratchet gear, because it is motionless to decide ratchet 7, relative displacement can make ratchet 6 and decide ratchet 7 and separate, and be bited into synchronous steady with driving wheel ratchet gear 1 ratchet, promptly rotate synchronously with the planetary wheel assembly, this moment, foot-operated crank and ring gear gear wheel were that 1:1 advances with speed.
The driving wheel ratchet gear 1 of planetary wheel assembly is under crank 5 drives during backspin (inhour), since the quality of clamping plate and inertia make ratchet moment not with 1 servo-actuated of driving wheel ratchet gear, relative displacement make ratchet under driving wheel ratchet gear 1 ratchet promotes with decide ratchet 7 interlocks, ratchet and clamping plate 4 do not revolve round the sun with the crank driving wheel, just oppositely rotation of planetary wheel 3 (positive hour hands), follower gear wheel 2 is just slowed down just to be changeed, and reaches laborsaving purpose, and the satellite gear number is elected three at least as.
Claims (3)
1. novel transmission system of bicycle use, comprise planetary wheel assembly and the ratchet of deciding that is installed on the bottom bracket axle, described planetary wheel assembly comprises the ring gear gear wheel, has three planetary wheels, driving wheel ratchet gear, crank, ratchet, inside and outside holding piece at least, it is characterized in that: ring gear gear wheel, planetary wheel, driving wheel ratchet gear, held by the curb pins holding clip and to be one, constitute the planetary wheel assembly; The driving wheel ratchet gear of described planetary wheel assembly is riveted on the crank, the ratchet in the planetary wheel assembly also comprises on the holding piece.
2. according to the novel transmission system of right 1 described a kind of bicycle use, described to decide the ratchet ratchet be that directed inhour is non-return, and driving wheel ratchet gear medial surface has ratchet, and ratchet is that directed cw is non-return, installs the end face bearing between inner side plane and clamping plate additional.
3. according to right 1 or the novel transmission system of 2 described a kind of bicycle uses, have two ratchets at least on the holding piece in the planetary wheel assembly, fluted on the ratchet, spring and top are arranged, driving wheel ratchet gear and decide ratchet and can trigger ratchet and make ratchet be in bistable state in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203052855U CN201198359Y (en) | 2007-11-27 | 2007-11-27 | Novel speed variator for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203052855U CN201198359Y (en) | 2007-11-27 | 2007-11-27 | Novel speed variator for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198359Y true CN201198359Y (en) | 2009-02-25 |
Family
ID=40449517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203052855U Expired - Fee Related CN201198359Y (en) | 2007-11-27 | 2007-11-27 | Novel speed variator for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201198359Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109153428A (en) * | 2016-05-12 | 2019-01-04 | 金福成 | Speed-variating hub of bicycle |
| CN111959672A (en) * | 2020-08-18 | 2020-11-20 | 姜立人 | Two-speed automatic transmission suitable for bicycle |
-
2007
- 2007-11-27 CN CNU2007203052855U patent/CN201198359Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109153428A (en) * | 2016-05-12 | 2019-01-04 | 金福成 | Speed-variating hub of bicycle |
| CN111959672A (en) * | 2020-08-18 | 2020-11-20 | 姜立人 | Two-speed automatic transmission suitable for 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: 20090225 Termination date: 20121127 |