CN201816411U - Bicycle rear axle assembly - Google Patents
Bicycle rear axle assembly Download PDFInfo
- Publication number
- CN201816411U CN201816411U CN2010202470155U CN201020247015U CN201816411U CN 201816411 U CN201816411 U CN 201816411U CN 2010202470155 U CN2010202470155 U CN 2010202470155U CN 201020247015 U CN201020247015 U CN 201020247015U CN 201816411 U CN201816411 U CN 201816411U
- Authority
- CN
- China
- Prior art keywords
- rear axle
- ratchet
- tumbler
- axle assembly
- wheel hub
- 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
The utility model discloses a bicycle rear axle assembly, which comprises a backshaft, a wheel hub sleeved on the backshaft and a one-way clutch assembly fixedly mounted on one end of the wheel hub. The one-way clutch assembly comprises a fixed part fixedly mounted on the wheel hub and a turned part in a relatively rotation with respect to the fixed part. The turned part is equipped with a driven gear. A ratchet and pawls mutually interacted with each other are arranged between the turned part and the fixed part. The turned part is rotatablely arranged on the backshaft. The bicycle rear axle assembly solves the problem of low running speed of bicycles due to the small diameter of driving gears and driven gears of small-wheel bicycles, thus promoting the running speed of bicycles and saving the labor. The bicycle rear axle assembly is especially suitable for small-sized bicycles and folding bicycles.
Description
Technical field
The utility model relates to a kind of parts of bicycle.A kind of hind axle assembly of bicycle specifically.
Background technology
At present, the cycle wheel diameter is more much smaller than the wheel diameter of former bicycle on the market, and is therefore lighter, collapsible, carry also more conveniently, more and more is subjected to people's welcome.But because the diameter ratio of the small-wheel bicycle driving gear and the passive number of teeth is less, the user is being pedaled under the situation of same number of turns, small-wheel bicycle is shorter than the distance of bull wheel bicycle running, pays promptly that the small-wheel bicycle travel distance is short under the situation of same manpower, speed is slow.Improve the moving velocity of minor diameter bicycle, will increase the diameter ratio, promptly increase the diameter of driving gear or reduce the diameter of driven gear.Increase the volume that the diameter of driving gear will corresponding this part of increase, run in the opposite direction with the original intention of design small-wheel bicycle, simultaneously, since driven gear by bearing carrier ring on the wheel hub of rear axle, its diameter can't further dwindle, and therefore, how to increase the driving gear of small-wheel bicycle and the diameter between the driven gear than a technical barrier that becomes this area.
The utility model content
For this reason, thereby technical problem to be solved in the utility model is to solve the smaller slow shortcoming of bicycle walking speed that causes of diameter of existing small-wheel bicycle driving gear and driven gear, and a kind of fast and labour-saving hind axle assembly of bicycle walking that makes is provided.
For solving the problems of the technologies described above, a kind of rear axle assembly for bicycle described in the utility model, comprise rear axle, be enclosed within the wheel hub on the described rear axle, be fixedly mounted on the free-wheeling assembly on described wheel hub one end, described free-wheeling assembly comprises the connecting element that is fixedly mounted on the described wheel hub and can be with respect to described connecting element tumbler in relative rotation, described tumbler is provided with driven gear, be provided with intermeshing ratchet and ratchet between described tumbler and the described connecting element, described tumbler is installed in rotation on the described rear axle.
Described connecting element is the ratchet that an inner ring is provided with ratchet, and described tumbler outer ring is provided with ratchet.
Described ratchet is fixed together by screw thread and described wheel hub.
Described driven gear and described tumbler are integrally formed.
Be provided with pad between the side of described tumbler and the described hub end side.
Described anchor fitting is and the nut of rear axle by screw thread fit, is provided with pad between described nut and the described tumbler.
Described pawl wheel is provided with two ratchets.
Offer pawl slot on the described pawl wheel, described ratchet is installed in the described pawl slot movably, also is provided with the spring that ratchet is resetted between described ratchet and the described pawl slot.
Described tumbler by bearing installation on described rear axle.
Technique scheme of the present utility model has the following advantages compared to existing technology, (1) tumbler directly is enclosed within on the rear axle, compare with being enclosed within on the wheel hub in the prior art, can dwindle the diameter of driven gear greatly, increase the diameter ratio of driving gear and driven gear, make bicycle exercise farther distance under with the situation of the number of turns, thereby improve the running velocity of bicycle at the driving gear phase inversion.(2) tumbler and driven gear are integrally formed, and structure is more stable, more firm.(3) connecting element fixes by screw thread and wheel hub, connects simple and reliable and stable.(4) adopt two ratchets make between connecting element and the tumbler cooperate more reliable.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the structural representation of rear axle assembly for bicycle;
Fig. 2 is the assembling scheme drawing of rear axle assembly for bicycle;
Fig. 3 is the structural representation of tumbler;
Fig. 4 is the structural representation of ratchet.
Reference numeral is expressed as among the figure: 1-rear axle, 2-wheel hub, 3-connecting element, 31-ratchet, 4-tumbler, 5-driven gear, 51-ratchet, 511-ratchet portion, 512-axial region, 52-pawl slot, 54-needle bearing.
The specific embodiment
Bicycle rear axle 1 assembly described in the utility model, comprise rear axle 1, be enclosed within the wheel hub 2 on the described rear axle 1, be fixedly mounted on the free-wheeling assembly on described wheel hub 2 one ends, described free-wheeling assembly comprises the connecting element that is fixedly mounted on the described wheel hub 23 and can be with respect to described connecting element 3 tumbler 4 in relative rotation, described tumbler 4 is provided with driven gear 5, be provided with intermeshing ratchet 31 and ratchet 51 between described tumbler 4 and the described connecting element 3, described tumbler 4 is installed in rotation on the described rear axle 1, in the present embodiment, tumbler 4 is installed on the rear axle 1 by needle bearing 54.Described connecting element 3 is the ratchet that an inner ring is provided with ratchet 31, and described tumbler 4 outer rings are provided with ratchet 51.Described ratchet is fixed together by screw thread and described wheel hub 2.Described driven gear 5 and described tumbler 4 are integrally formed.Be provided with pad between the side of described tumbler 4 and described wheel hub 2 end side surface, be used for adjusting the distance between tumbler 4 and wheel hub 2 end side surface, thereby make ratchet 51 and the ratchet 31 ingear width on the ratchet on the tumbler 4 reach maximum.Described connecting element 3 is and the nut of rear axle 1 by screw thread fit, is provided with pad between described nut and the described tumbler 4, is used for preventing that nut from producing scraping to the end side surface of tumbler 4, keeps the smooth of tumbler 4 end side surface, and tumbler 4 is rotated smoothly.Described tumbler 4 is provided with two ratchets 51.Also offer pawl slot 52 on the described tumbler 4, described ratchet 51 is installed in the described pawl slot 52 movably, in the present embodiment, ratchet 51 comprises axial region 512 and ratchet portion 511, ratchet portion 511 can rotate around axial region 512, also is provided with the retracing spring that ratchet 51 is resetted between described ratchet 51 and the described pawl slot 52.
The user is to the pedal of ahead-driving bicycle, driving gear reaches rear axle 1 by chain with power, and chain is meshed with driven gear 5 on the tumbler 4, and the ratchet on the tumbler 4 is meshed with ratchet on the connecting element 3, drive wheel hub 2 and rotate, thereby the trailing wheel that drives bicycle rotates.Tumbler 4 directly is enclosed within on the rear axle 1, with be enclosed within wheel hub 2 in the prior art on compare, can dwindle the diameter of driven gear 5 greatly, increase the diameter ratio of driving gear and driven gear 5, make bicycle exercise farther distance under with the situation of the number of turns, thereby improve the running velocity of bicycle at the driving gear phase inversion.Tumbler 4 and driven gear 5 are integrally formed, and structure is more stable, more firm.Connecting element 3 fixes by screw thread and wheel hub 2, connects simple and reliable and stable.Tumbler rotated round about when the user kicked backward, and ratchet only slips over from ratchet, therefore, relatively rotated unpowered transmission between driving gear and the driven gear between tumbler and the connecting element.
In the above-described embodiments, also can on the inner ring of connecting element, ratchet be set, on the outer ring of tumbler, ratchet be set, can finish free-wheel clutch transmission and the function of separating equally.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (8)
1. rear axle assembly for bicycle, comprise rear axle, be enclosed within the wheel hub on the described rear axle, be fixedly mounted on the free-wheeling assembly on described wheel hub one end, described free-wheeling assembly comprises the connecting element that is fixedly mounted on the described wheel hub and can be with respect to described connecting element tumbler in relative rotation, described tumbler is provided with driven gear, it is characterized in that: be provided with intermeshing ratchet and ratchet between described tumbler and the described connecting element, described tumbler is installed in rotation on the described rear axle.
2. rear axle assembly for bicycle according to claim 1 is characterized in that: described connecting element is the ratchet that an inner ring is provided with ratchet, and described tumbler outer ring is provided with ratchet.
3. rear axle assembly for bicycle according to claim 2 is characterized in that: described ratchet is fixed together by screw thread and described wheel hub.
4. rear axle assembly for bicycle according to claim 3 is characterized in that: described driven gear and described tumbler are integrally formed.
5. rear axle assembly for bicycle according to claim 4 is characterized in that: be provided with pad between the side of described tumbler and the described hub end side.
6. rear axle assembly for bicycle according to claim 5 is characterized in that: described connecting element is and the nut of rear axle by screw thread fit, is provided with pad between described nut and the described tumbler.
7. rear axle assembly for bicycle according to claim 6 is characterized in that: described pawl wheel is provided with two ratchets.
8. rear axle assembly for bicycle according to claim 7 is characterized in that: offer pawl slot on the described pawl wheel, described ratchet is installed in the described pawl slot movably, also is provided with the spring that ratchet is resetted between described ratchet and the described pawl slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202470155U CN201816411U (en) | 2010-07-05 | 2010-07-05 | Bicycle rear axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202470155U CN201816411U (en) | 2010-07-05 | 2010-07-05 | Bicycle rear axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201816411U true CN201816411U (en) | 2011-05-04 |
Family
ID=43914377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202470155U Expired - Fee Related CN201816411U (en) | 2010-07-05 | 2010-07-05 | Bicycle rear axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201816411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879841A (en) * | 2010-07-05 | 2010-11-10 | 张昌维 | Rear axle assembly for bicycle |
| CN101954840A (en) * | 2009-11-21 | 2011-01-26 | 张昌维 | Rear axle assembly of bicycle |
-
2010
- 2010-07-05 CN CN2010202470155U patent/CN201816411U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954840A (en) * | 2009-11-21 | 2011-01-26 | 张昌维 | Rear axle assembly of bicycle |
| CN101879841A (en) * | 2010-07-05 | 2010-11-10 | 张昌维 | Rear axle assembly 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: 20110504 Termination date: 20120705 |