CN2225422Y - Chain wheel driving mechanism of bicycle - Google Patents
Chain wheel driving mechanism of bicycle Download PDFInfo
- Publication number
- CN2225422Y CN2225422Y CN 95212489 CN95212489U CN2225422Y CN 2225422 Y CN2225422 Y CN 2225422Y CN 95212489 CN95212489 CN 95212489 CN 95212489 U CN95212489 U CN 95212489U CN 2225422 Y CN2225422 Y CN 2225422Y
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- China
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- gear
- ratchet
- sprocket
- driven
- pedal
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Abstract
The utility model relates to a sprocket drive mechanism for bicycles. The utility model not only can be ridden by stepping and rotating a pedal forwards or backwards to run forwards at a speed or another speed, but also can be ridden by stepping and rotating the pedal forwards or backwards to run forwards or backwards. The flywheel of the traditional bicycle is removed, and a sheet type driven sprocket 2 is fixed on a hub 1 in stead of the flywheel. A driving sprocket on a centre shaft 7 is a planet wheel mechanism. A driving gear 6 is fixed on the centre shaft 7, a transitional gear 5 is installed on a disc 11, and the outer edge of a driven inner gear 4 is provided with a sprocket. The transmission among the three gears is limited and the unidirectional rotation of the disc 11 is limited or relieved to accomplish the speed changing drive that the planet wheel mechanism is rotated forwards integrally when the pedal is stepped and rotated forwards, the planet wheel mechanism is rotated backwards separately when the pedal is stepped and rotated backwards, and the planet wheel mechanism is rotated forwards integrally to do front drive or is rotated backwards integrally to do back drive when the pedal is stepped and rotated forwards or backwards.
Description
The utility model is a kind of bicycle drive, especially the bicycle chain wheel drive mechanism of being made up of drive sprocket, chain and driven sprocket.
The bicycle of Chu Shouing is exactly this structure in the market, mainly is made up of drive sprocket, chain and driven sprocket (being flywheel).The single speed bicycle only is each one of drive sprocket and a driven sprocket; Variable speed bicycle then is that the drive sprocket and the driven sprocket of the different numbers of teeth is a plurality of, and the transmission by the driving and driven sprocket wheel of the different numbers of teeth of chain device conversion is dialled in operation obtains different transmitting ratios, reaches the purpose of speed change.When people advance by bike, step on the commentaries on classics pedal forward drive sprocket is rotated forward, drive driven sprocket by chain and rotate, drive to advance; When people get on and off or do not step on when changeing pedal and sliding, driven sprocket (being flywheel) is finished the neutral that the moving and drive sprocket of car, chain do not rotate and is rotated.But at axis pedal position, change two actions of pedal, also have a action not to be used to post legged commentaries on classics pedal except having to step on forward to change with not stepping on.Therefore, general bicycle chain wheel drive mechanism has just slatterned the This move resource of " changeing pedal to the way of escape " in the bicycle chain wheel drive mechanism in vain.
The purpose of this utility model provides a kind of bicycle chain wheel drive mechanism, it used step on forward change change before pedal drives drive sprocket drive to advance and do not step on change pedal and have neutral and rotate two actions after, also used easily to post legged and changeed the pedal This move, can drive to retreat, also can drive to advance with another speed.
The purpose of this utility model is achieved in that in the ordinary bicycle chain wheel driving mechanism, changes flywheel and is fixed on the skin for the chip driven sprocket.Drive sprocket is a planetary wheeling mechanism, and wherein driving gear is fixed on the axis, and excessively gear is installed on the disk of axis rotation, and the outward flange of driven inner gear is a sprocket wheel.With the unidirectional transmission between any two gears in ratchet, the pawl structures restriction planetary wheeling mechanism, limit the unidirectional rotation of disk again.When stepping on forward when changeing pedal and advancing by bike, the unidirectional transmission in ratchet, the pawl structures restriction planetary wheeling mechanism between three gears makes to change before the planetary wheeling mechanism integral body and drives to advance; When changeing pedal to post legged and advance by bike, to install to rotate behind the disk of excessive gear and be subjected to ratchet, ratchet restriction, transmission between planetary wheeling mechanism three gears is changeed before making driven inner gear still and is driven to advance; When not stepping on when changeing pedal and sliding, moving and the neutral rotation that driven sprocket and chain rotate thereupon of car is finished in the free transmission of planetary wheeling mechanism; Change when stepping on forward or backward that pedal advances by bike or when retreating, the transmission between omnirange restriction planetary wheeling mechanism three gears is rotated planetary wheeling mechanism integral body forward or backward, thereby driven to advance or retreat.
Unidirectional transmission in the above-mentioned restriction planetary wheeling mechanism between any two gears can be used ratchet, pawl structures restriction driving gear and the excessively unidirectional transmission between the gear; Restriction is that another secondary ratchet, sour jujube grab structure around the disk unidirectional rotation of axis rotation; Transmission between omnirange restriction planetary wheeling mechanism three gears can be pinned any moving point in three gear transmissions with screw.When stepping on forward when changeing pedal and advancing by bike, driving gear and the excessive transmission direction between the gear be ratchet, ratchet restriction direction just, not transmission between three gears, and commentaries on classics drives to advance with a speed before the planetary wheeling mechanism integral body; When changeing pedal to post legged and advance by bike, transmission between planetary wheeling mechanism three gears, disk rotates backward and limited by another secondary ratchet, ratchet, makes to change before driven inner gear is still in the planetary wheeling mechanism to drive to advance with another speed; When not stepping on when changeing pedal and sliding, driving gear does not rotate, and the free transmission between disk and three gears makes the bicycle chain wheel drive mechanism make neutral and rotates; Change when stepping on forward or backward that pedal advances by bike or when retreating, at first remove the unidirectional restriction that disk rotates, omnirange limits the transmission between three gears, changes before the planetary wheeling mechanism integral body or whole back is changeed and driven to advance or retreat.
Certain above-mentioned with ratchet, pawl structures restriction driving gear and the excessively unidirectional transmission between the gear, can replace the structure of ratchet with driving gear, promptly with driving gear, pawl structures restriction driving gear and the excessively unidirectional transmission between the gear.
Unidirectional transmission between any two gears in the above-mentioned restriction planetary wheeling mechanism is arranged again, can also use the unidirectional transmission between ratchet, pawl structures limit excessive gear and the driven inner gear.When stepping on the commentaries on classics pedal forward, the transmission direction between excessive gear and the driven inner gear is ratchet, ratchet restriction direction just, and not transmission between three gears is changeed before the planetary wheeling mechanism integral body and driven to advance.
Certain above-mentioned with the unidirectional transmission between ratchet, pawl structures limit excessive gear and the driven inner gear, also can replace the structure of ratchet with driven inner gear, promptly use the unidirectional transmission between driven inner gear, pawl structures limit excessive gear and the driven inner gear.
Because in the above-mentioned solution, make drive sprocket with planetary wheeling mechanism, driven sprocket is not again traditional flywheel, but the chip sprocket wheel directly is fixed on the skin, can step on forward very easily and change pedal with a fast before driving or do not do any operation and change pedal with another fast before driving to post legged; Can also step on forward or backward changes the amusement that pedal advances by bike or retreats.This chain wheel driving mechanism, integral layout is reasonable, install, Operation and maintenance are easy, have that speed change is simple, two speed ratio differences big, health care (the elderly retreats the effect that walking has brain tonic to keep fit, equally to post legged change that pedal advances by bike or to post legged change pedal retreat by bike also have the effect that brain tonic is kept fit), tap intellectual resources and the multiple function of amusement (middle school, Beijing single wheel fleet).
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is first example structure cutaway view.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the another kind of structure cutaway view of first embodiment.
Fig. 4 is second example structure cutaway view.
Fig. 5 is the another kind of structure cutaway view of second embodiment.
In first embodiment Fig. 1, Fig. 2, driven sprocket 2 is captiveed joint with an axle skin 1, finishes the transmission of driven sprocket 2 and drive sprocket with chain 3, and drive sprocket is made up of planetary wheeling mechanism.The outward flange of driven inner gear 4 is sprocket wheels, and constitutes bearing and disk 11 running-fits with steel ball 17, and excessively gear 5 usefulness axle 12 is installed on the disk 11, and driving gear 6 and ratchet 8 are fixed on the axis 7, and axis 7 is connected with crank, pedal.Ratchet 9 and spring 10 are installed on the disk 11, and and ratchet 8 restriction driving gears 6 and the excessively unidirectional transmission between the gear 5.Be installed in ratchet 15 on the car body 16 can be adjusted to be fixed on disk 11 on ratchet 14 cooperate or mismatch, play restriction or remove the unidirectional rotation effect of disk 11.When stepping on forward when changeing pedal and advancing by bike, rotate before the driving gear 6, ratchet 9, ratchet 8 have limited the driving gear 6 of this direction and the excessively transmission between the gear 5, and ratchet 15, ratchet 14 do not limit rotations before the disk 11, so, rotate before the driven inner gear 4 and drive to advance with a speed; When post legged commentaries on classics pedal advances by bike, driving gear 6 rotates backward, ratchet 9, ratchet 8 do not limit the driving gear 6 of this direction and the excessively transmission between the gear 5, transmission between planetary wheeling mechanism three gears, and ratchet 15, ratchet 14 restriction disks 11 rotate backward, and driven inner gear 4 rotates before still and drives to advance with another speed; When not stepping on when changeing pedal and sliding, driving gear 6 does not rotate, driven inner gear 4, disk 11 and excessively gear 5 neutral of doing free transmission rotate; Change that pedal advances by bike or when retreating when stepping on forward or backward, pin the transmission between three gears in the planetary wheeling mechanism with screw 13, and adjust ratchet 15 and make the disk 11 can two-way rotation, to rotate before the driven inner gear 4 and drive to advance, driven inner gear 4 backs are rotated and are driven to retreat.
Also can go out the bicycle chain wheel drive mechanism of another kind of structure according to above-mentioned principle design, its structure as shown in Figure 3.In this structure, replace ratchet 8 by driving gear 6, directly cooperate with driving gear 6, restriction driving gear 6 and the excessively unidirectional transmission between the gear 5 by ratchet 9, reaching to step on forward changes not transmission between pedal three gears, and rotates the purpose of driving to advance before whole.
In second embodiment Fig. 4, under other structure unmodified conditions in first embodiment bicycle chain wheel drive mechanism, only changing ratchet 19 is fixed on the driven inner gear 4, the ratchet 18 that is installed on the disk 11 cooperates with it, be construed as limiting the unidirectional transmission between excessive gear 5 and the driven inner gear 4, reaching to step on forward changes not transmission between pedal three gears, the also whole preceding purpose of driving to advance of rotating.
Can design the bicycle chain wheel drive mechanism of another kind of structure again according to second embodiment, its structure as shown in Figure 5.In this structure, replace ratchet 19 by driven inner gear 4, directly cooperate the unidirectional transmission between limit excessive gear 5 and the driven inner gear 4 with driven inner gear 4 by ratchet 18, also reaching to step on forward changes not transmission between pedal three gears, and rotates the purpose of driving to advance before whole.
Certainly, the structure of whole unidirectional rotation of restriction planetary wheeling mechanism or whole two-way rotation is not limited to above-mentioned several form, can also be other similar type.
Claims (10)
1, a kind of bicycle chain wheel drive mechanism of forming by drive sprocket, chain and driven sprocket, it is characterized in that: its drive sprocket is made up of the planetary wheeling mechanism of driving gear 6, excessive gear 5 and driven inner gear 4, ratchet 8 and ratchet 9 restriction driving gears 6 and the excessively unidirectional transmission between the gear 5.
2. bicycle chain wheel drive mechanism according to claim 1 is characterized in that: driven sprocket 2 directly is fixed on the skin 1.
3, bicycle chain wheel drive mechanism according to claim 1, it is characterized in that: the outward flange of driven inner gear 4 is sprocket wheels, and excessively gear 5 and ratchet 9 are installed on the disk 11, and driving gear 6 and ratchet 8 are fixed on the axis 7.
4. according to claim 1,3 described bicycle chain wheel drive mechanisms, it is characterized in that: adjust the ratchet 15 be installed on the car body 16 and the cooperation or the non-cooperation of ratchet 14, can limit or remove the unidirectional rotation of disk 11.
5, a kind of bicycle chain wheel drive mechanism of forming by drive sprocket, chain and driven sprocket, it is characterized in that: its drive sprocket is made up of the planetary wheeling mechanism of driving gear 6, excessive gear 5 and driven inner gear 4, and ratchet 9 cooperates driving gears 6 restriction driving gears 6 and the excessively unidirectional transmission between the gear 5.
6. bicycle chain wheel drive mechanism according to claim 5 is characterized in that: driving gear 6 has replaced ratchet 8 and ratchet 9 to be used.
7, a kind of bicycle chain wheel drive mechanism of forming by drive sprocket, chain and driven sprocket, it is characterized in that: its drive sprocket is formed the unidirectional transmission between ratchet 19 and ratchet 18 limit excessive gears 5 and the driven inner gear 4 by the planetary wheeling mechanism of driving gear 6, excessive gear 5 and driven inner gear 4.
3, bicycle chain wheel drive mechanism according to claim 7 is characterized in that: ratchet 19 is fixed on the driven inner gear 4.
9, a kind of bicycle chain wheel drive mechanism of forming by drive sprocket, chain and driven sprocket, it is characterized in that: its drive sprocket is made up of the planetary wheeling mechanism of driving gear 6, excessive gear 5 and driven inner gear 4, the unidirectional transmission that ratchet 18 cooperates between driven inner gear 4 limit excessive gears 5 and the driven inner gear 4.
10, bicycle chain wheel drive mechanism according to claim 9 is characterized in that: driven inner gear 4 has replaced ratchet 19 and ratchet 18 to be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95212489 CN2225422Y (en) | 1995-06-12 | 1995-06-12 | Chain wheel driving mechanism of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95212489 CN2225422Y (en) | 1995-06-12 | 1995-06-12 | Chain wheel driving mechanism of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2225422Y true CN2225422Y (en) | 1996-04-24 |
Family
ID=33862665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95212489 Expired - Fee Related CN2225422Y (en) | 1995-06-12 | 1995-06-12 | Chain wheel driving mechanism of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2225422Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358394A (en) * | 2011-07-28 | 2012-02-22 | 关广生 | Speed changing device arranged on middle axle of bicycle |
-
1995
- 1995-06-12 CN CN 95212489 patent/CN2225422Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358394A (en) * | 2011-07-28 | 2012-02-22 | 关广生 | Speed changing device arranged on middle axle of bicycle |
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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 |