CN201151463Y - Variable bicycle and central axis planet gear transmission thereof - Google Patents
Variable bicycle and central axis planet gear transmission thereof Download PDFInfo
- Publication number
- CN201151463Y CN201151463Y CNU2007202011843U CN200720201184U CN201151463Y CN 201151463 Y CN201151463 Y CN 201151463Y CN U2007202011843 U CNU2007202011843 U CN U2007202011843U CN 200720201184 U CN200720201184 U CN 200720201184U CN 201151463 Y CN201151463 Y CN 201151463Y
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- ratchet
- gear ring
- axle sleeve
- contained
- central axle
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Abstract
The utility model discloses a variable speed bicycle which is provided with a medial axis planetary gear transmission, which relates to the technical field of bicycle manufacturing. The central sun gear, the planetary gear stent and the gear ring of the medial axis planetary gear transmission are all movably sleeved out side of a central axis sleeve, and the middle of the planetary gear stent and the central axis sleeve, and the middle of the gear ring and the central axis sleeve are both provided with a ratchet and pawl mechanism; and the outer margin of the gear ring is provided with a chain tooth. The medial axis of the variable speed bicycle is arranged in the central axis sleeve of the medial axis planetary gear transmission, the central sun gear of the medial axis planetary gear transmission is connected with a braking part, and the medial axis planetary gear transmission is meshed and connected with the driving chain of a bicycle through the chain tooth on the outer margin of the gear ring. The variable speed bicycle of the utility model mainly aims at solving the problems of the inconvenience of assembling, maintaining and using the medial axis planetary gear transmission of a present bicycle, and meanwhile, is characterized by a thin axial size and being pedaled freely and reversely.
Description
Technical field
The utility model relates to bicycle manufacturing technology field, particularly a kind of bicycle with variable-speed drive.
Technical background
In order to adapt to pedaling the dynamics of stepping on, speed and satisfying the moving velocity that changes significantly of cyclist, bicycle need be provided with the variable-speed drive that can shift gears in power drive.More reliable in order to pursue the speed change transmission, transmission gear shift is bigger than scope, the applicant in first to file " speed variable bicycle drive device " (license notification number: CN 2393812Y, Granted publication day: on August 30th, 2000), this technical scheme is respectively to be provided with a planet gear transmission at bicycle middle shaft and rear axle, axis planetary gearbox wherein is that pinion carrier is fixed on the axis, gear ring is contained on the pinion carrier, sprocket wheel then is contained on the center sun wheel of gear ring one side, the center sun wheel is sleeved on the axis, between center sun wheel and axis, also be provided with ratchet, ratchet, speed change are to realize by the braking gear ring.But this device still has some deficits: the one, and the star frame of axis planetary gearbox is fixed and the center sun wheel is to be contained in respectively on the axis, axis has constituted a part of axis planetary gearbox, this change-speed box is not easy to integral body and installs and removes on vehicle frame like this, and I﹠ M is all inconvenient; The 2nd, this structure is at gear ring under the gear stages of braking, and the pedal of captiveing joint with axis then can not reverse, and causing rides makes things convenient for inadequately with random; The 3rd, because sprocket wheel is contained in outside gear ring one side, make that change-speed box thickness vertically is bigger, to Vehicle Frame Design with pedal the traveling comfort of stepping on certain influence is all arranged.
Summary of the invention
Variable speed bicycle provided by the utility model and axis planetary gearbox thereof, what it mainly solved is the assembling of existing bicycle middle shaft planetary gearbox, maintenance and awkward problem.
In order to address the above problem, variable speed bicycle of the present utility model, the axis planetary gearbox is installed on its axis, this axis planetary gearbox has the center sun wheel and is engaged on a plurality of satellite gears between this center sun wheel and the gear ring, described axis planetary gearbox is contained in outside the described axis by a central axle sleeve, described center sun wheel, planetary carrier and gear ring all are sleeved on outside the described central axle sleeve versatilely, between described planetary carrier and the described bottom bracket axle, all be provided with ratchet and pawl arrangement between described gear ring and the described central axle sleeve; Be connected with gearshift braking parts between described center sun wheel and the vehicle frame, the outer rim of described gear ring is provided with chain tooth and is connected with chain engages.
Can be provided with ball grooves between above-mentioned axis planetary gearbox center sun wheel and the described central axle sleeve, in this groove steel ball is housed; Can be provided with ball grooves between described center sun wheel and the described planetary carrier, in this groove steel ball is housed; Can be provided with ball grooves between described planetary carrier and the described gear ring, in this groove steel ball is housed; One end of described gear ring can be contained in outside the central axle sleeve by antifriction-bearing box.Ratchet and pawl arrangement between above-mentioned planetary carrier and the described bottom bracket axle can be by the ratchet ring that is located in the described planetary carrier, and be contained in pawl base between this ratchet ring and the described central axle sleeve, and be contained in the ratchet on this pawl base and be contained in described ratchet and described pawl base between spring wire constitute; Ratchet and pawl arrangement between described gear ring and the described central axle sleeve can be by the ratchet ring that is located in the described capable gear ring, and be contained in pawl base between this ratchet ring and the described central axle sleeve, and be contained in the ratchet on this pawl base and be contained in described ratchet and described pawl base between spring wire constitute; Can be connected with end cap between described gear ring and the described antifriction-bearing box.Two above-mentioned pawl bases can be that spline connects with being connected of described central axle sleeve, and described central axle sleeve also can be connected outside the described axis by spline.Above-mentioned gearshift braking parts can be connected center sun wheel one end be provided with pin-and-hole at least on it or sell both one of retainer and be connected retaining pawl on the described vehicle frame.
Owing to adopted technique scheme, the utility model compared with prior art has following beneficial effect:
1, because the axis planetary gearbox is a form with an assembly is contained in outside the axis by a central axle sleeve, can install and remove whole axis planetary gearbox outside axis, and the patent that is unlike in first to file is such, when the axis planetary gearbox when axis is pulled down, whole axis planetary gearbox all will be broken.Therefore, no matter be to install and maintenance, the utility model dismounting is safeguarded very convenient.
2, between planetary carrier and the described bottom bracket axle, all be provided with between gear ring and the described central axle sleeve ratchet and pawl arrangement by bike people can reverse to pedal to step on and be unlikely and allow bicycle brake, be applicable to most of people's custom by bike.
3, the axis planetary gearbox is connected with chain engages by the chain tooth of its gear ring outer rim, than the patent that has now in first to file, its axis planetary gearbox is made thinlyyer, thereby avoids formerly applying for a patent in use, and cyclist's bipod will be opened the inconvenience of riding widely.
Description of drawings
Fig. 1 is the front view of the utility model embodiment.
Fig. 2 is the left view of the utility model embodiment.
Fig. 3 is the right elevation of the utility model embodiment.
The specific embodiment
Variable speed bicycle as shown in Figure 1 to Figure 3, axis 3 is provided with spline, and the central axle sleeve 4 of axis planetary gearbox is sleeved on the axis 3 of variable speed bicycle by spline on it and jump ring 23.Center sun wheel 6 is sleeved on outside the central axle sleeve 4 versatilely, the ball 5 of annular arrangement also is housed by ball grooves between them, the left end of center sun wheel 6 is fixedly connected with the retainer 8 of three pronged shape, fork-shaped external end head at retainer 8 is provided with pin, can block or discharge retainer 8 by the retaining pawl that is contained on the vehicle frame, whether the rotation by retainer 8 control center's sun wheels 6.Be provided with the planetary carrier 16 that is sleeved on versatilely outside the central axle sleeve 4 on the right side of center sun wheel 6, the ball 2 of annular arrangement is housed by ball grooves between planetary carrier 16 and the center sun wheel 6, planetary carrier 16 is meshed by the ratchet 29 that the ratchet and that is provided with in it is contained on the pawl base 17, between pawl base 17 and ratchet 29 spring wire 28 is housed, pawl base 17 is connected outside the central axle sleeve 4 by spline.Gear ring 11 also is housed outside central axle sleeve 4, the ball 30 of annular arrangement also is housed by ball grooves between gear ring 11 and the planetary carrier 16, gear ring 11 is meshed by the ratchet 27 that the ratchet and that is provided with in it is contained on the pawl base 18, between pawl base 18 and ratchet 27, spring wire 26 is housed, pawl base 18 is connected outside the central axle sleeve 4 by spline, be crimped with back-up ring 19 on the seam of the right-hand member of gear ring 11, back-up ring 19 is contained in outside the central axle sleeve 4 by antifriction-bearing box 20, the inner ring of bearing 20 is by jam nut 21,22 are fixed on outside the central axle sleeve 4, between pawl base 17 and pawl base 18, packing ring 25 is housed, between pawl base 18 and antifriction-bearing box 20, packing ring 24 is housed.Planetary carrier 16 is by rivet 14,32, and packing ring 15,31 and antifriction-bearing box 9,1 are equipped with three satellite gears 10, and satellite gear 10 is meshed with gear ring 11 and center sun wheel 6 simultaneously.Chain guard 13 is equipped with by rivet 12,33 in the right side of gear ring 11, in the left side of gear ring 11 dust boot 7 is housed.
Above-mentioned axis planetary gearbox is when work, and axis 3 has four kinds of state of kinematic motions with respect to gear ring 11, and first kind of state of kinematic motion is: retainer 8 is in free state, and axis 3 rotates forward under the drive of bicycle pedals crank.On the axis 3 of this state by with its spline bonded assembly pawl base 18, ratchet 27 direct drive gear rings 11, in this state, the part of whole axis planetary gearbox all can be static relatively, and rotate synchronously with foot-operated crank, sprocket on the gear ring 11 and foot-operated crank drive the chain drive trailing wheel synchronously and rotate, and axis planetary gearbox at this moment is in 1 transmitting ratio gear.Second kind of state of kinematic motion is: retainer 8 is in braking mode, and promptly retainer 8 acts on mutually with parts on being contained in cycle frame, a relative cycle frame transfixion, and axis 3 rotates forward under the drive of bicycle pedals crank.The axis 3 of this state rotates forward with respect to center sun wheel 6, because satellite gear 10 and 6 engagements of center sun wheel, axis 3 again by with its spline bonded assembly pawl base 17, ratchet 29 drives planetary carrier 16 and rotates around center sun wheel 6, satellite gear 10 drives gear ring 11 and rotates around axis 3 to be higher than at the bicycle pedals crank rolling velocity under the combined action of center sun wheel 6 and planetary carrier 16, at this moment, ratchet 27 skids with respect to the ratchet of circle 11, sprocket on the gear ring 11 drives the chain drive trailing wheel with the rotating speed faster than foot-operated crank and rotates, and axis planetary gearbox at this moment is in greater than 1 transmitting ratio gear.The third state of kinematic motion is: retainer 8 is in free state, and axis 3 rotates backward under the drive of bicycle pedals crank.At this moment, whole axis planetary gearbox can rotate backward synchronously in company with axis, also can be that the ratchet on gear ring 11, the pinion carrier 16 all rotates backward with ratchet 29,27 rotating speed that allows the axis planetary gearbox keep static or be lower than axis 3 that skids.The 4th kind of state of kinematic motion is: retainer 8 is in braking mode, and axis 3 rotates backward under the drive of bicycle pedals crank.At this moment, the ratchet on gear ring 11, the pinion carrier 16 all rotates backward with ratchet 29,27 rotating speed that allows the axis planetary gearbox keep static or be lower than axis 3 that skids.
Claims (10)
1. variable speed bicycle, the axis planetary gearbox is installed on its axis, this axis planetary gearbox has the center sun wheel and is engaged on a plurality of satellite gears between this center sun wheel and the gear ring, it is characterized in that: described axis planetary gearbox is contained in outside the described axis by a central axle sleeve, described center sun wheel, planetary carrier and gear ring all are sleeved on outside the described central axle sleeve versatilely, between described planetary carrier and the described bottom bracket axle, all be provided with ratchet and pawl arrangement between described gear ring and the described central axle sleeve; Described center sun wheel is connected with the braking parts, and the outer rim of described gear ring is provided with chain tooth and is connected with chain engages.
2. variable speed bicycle according to claim 1 is characterized in that: be provided with ball grooves between described axis planetary gearbox center sun wheel and the described central axle sleeve, in this groove steel ball be housed; Be provided with ball grooves between described center sun wheel and the described planetary carrier, in this groove steel ball be housed; Be provided with ball grooves between described planetary carrier and the described gear ring, in this groove steel ball be housed; One end of described gear ring is contained in outside the central axle sleeve by antifriction-bearing box.
3. variable speed bicycle according to claim 1 and 2, it is characterized in that: the ratchet and pawl arrangement between described planetary carrier and the described bottom bracket axle is by the ratchet ring that is located in the described planetary carrier, and be contained in pawl base between this ratchet ring and the described central axle sleeve, and be contained in the ratchet on this pawl base and be contained in described ratchet and described pawl base between spring wire constitute; Ratchet and pawl arrangement between described gear ring and the described central axle sleeve is by the ratchet ring that is located in the described capable gear ring, and be contained in pawl base between this ratchet ring and the described central axle sleeve, and be contained in the ratchet on this pawl base and be contained in described ratchet and described pawl base between spring wire constitute; Be connected with end cap between described gear ring and the described antifriction-bearing box.
4. variable speed bicycle according to claim 3 is characterized in that: described two pawl bases all are that spline connects with being connected of described central axle sleeve; Described central axle sleeve is connected outside the described axis by spline.
5. variable speed bicycle according to claim 4 is characterized in that: described braking parts are the brake discs that are connected center sun wheel one end.
6. axis planetary gearbox, the center sun wheel is arranged and be engaged on a plurality of satellite gears between this center sun wheel and the gear ring, it is characterized in that: described center sun wheel, planetary carrier and gear ring all are sleeved on outside the central axle sleeve versatilely, between described planetary carrier and the described bottom bracket axle, all be provided with ratchet and pawl arrangement between described gear ring and the described central axle sleeve; The outer rim of described gear ring is provided with chain tooth.
7. axis planetary gearbox according to claim 6 is characterized in that: be provided with ball grooves between described center sun wheel and the described central axle sleeve, in this groove steel ball be housed; Be provided with ball grooves between described center sun wheel and the described planetary carrier, in this groove steel ball be housed; Be provided with ball grooves between described planetary carrier and the described gear ring, in this groove steel ball be housed; One end of described gear ring is contained in outside the central axle sleeve by antifriction-bearing box.
8. according to claim 6 or 7 described axis planetary gearboxs, it is characterized in that: the ratchet and pawl arrangement between described planetary carrier and the described bottom bracket axle is by the ratchet ring that is located in the described planetary carrier, and be contained in pawl base between this ratchet ring and the described central axle sleeve, and be contained in the ratchet on this pawl base and be contained in described ratchet and described pawl base between spring wire constitute; Ratchet and pawl arrangement between described gear ring and the described central axle sleeve is by the ratchet ring that is located in the described capable gear ring, and be contained in pawl base between this ratchet ring and the described central axle sleeve, and be contained in the ratchet on this pawl base and be contained in described ratchet and described pawl base between spring wire constitute; Be connected with end cap between described gear ring and the described antifriction-bearing box.
9. axis planetary gearbox according to claim 8 is characterized in that: described two pawl bases all are that spline connects with being connected of described central axle sleeve.
10. axis planetary gearbox according to claim 9 is characterized in that: described center sun wheel one end is connected with brake disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202011843U CN201151463Y (en) | 2007-10-19 | 2007-10-19 | Variable bicycle and central axis planet gear transmission thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202011843U CN201151463Y (en) | 2007-10-19 | 2007-10-19 | Variable bicycle and central axis planet gear transmission thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201151463Y true CN201151463Y (en) | 2008-11-19 |
Family
ID=40127142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007202011843U Expired - Fee Related CN201151463Y (en) | 2007-10-19 | 2007-10-19 | Variable bicycle and central axis planet gear transmission thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201151463Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104487336A (en) * | 2013-07-08 | 2015-04-01 | 艾弗奈欧股份公司 | Torque transmission ring |
-
2007
- 2007-10-19 CN CNU2007202011843U patent/CN201151463Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104487336A (en) * | 2013-07-08 | 2015-04-01 | 艾弗奈欧股份公司 | Torque transmission ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081119 Termination date: 20151019 |
|
| EXPY | Termination of patent right or utility model |