CN201461792U - Noiseless transmission flywheel - Google Patents
Noiseless transmission flywheel Download PDFInfo
- Publication number
- CN201461792U CN201461792U CN2009201043738U CN200920104373U CN201461792U CN 201461792 U CN201461792 U CN 201461792U CN 2009201043738 U CN2009201043738 U CN 2009201043738U CN 200920104373 U CN200920104373 U CN 200920104373U CN 201461792 U CN201461792 U CN 201461792U
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- CN
- China
- Prior art keywords
- external tooth
- spring
- axle sleeve
- sleeve
- outer ring
- 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 relates to fittings for a bicycle, an electric bicycle or other manpower vehicles, in particular to a noiseless transmission flywheel, which solves the problems of the prior flywheel such as high noises, complicated structure, bad processing and assembling process and the like. The noiseless transmission flywheel comprises an external tooth sleeve and a shaft sleeve; the outer ring of the external tooth sleeve is provided with an external tooth; rolling balls are arranged on two sides of the inner ring of the external tooth sleeve respectively; a pressure cover is arranged on the outer side of each rolling ball; a wheel hole mutually matched with a wheel shaft is formed in the center of the shaft sleeve; a retaining groove is formed on the inner ring of the external tooth sleeve; a right-hand spring and a left-hand spring in the opposite enwinding directions which are respectively enwound from the middle position of the outer ring of the shaft sleeve to two sides are enwound on the outer ring of the shaft sleeve; a stopper formed by folding one end of a close-packed flexible spring upwards is clamped into the retaining groove of the external tooth ring, and the other end of the close-packed flexible spring adopts a free end. By adopting the flexible spring, no noise exists in the relative movement between the external tooth sleeve and the shaft sleeve. The utility model has the advantages of simple structure, good processing and assembly process, low production cost, good interchangeability, smaller radial dimension compared with the common flywheel, material conservation and wide application scope.
Description
Technical field
The utility model relates to a kind of bicycle, electric bicycle or other rickshaw accessory, is specially a kind of noiseless transmission flywheel.
Background technique
The flywheel that bicycle, electric bicycle or other rickshaw that existing market is sold generally uses, noise is big, easily because of very heavy spring distortion, fractureing causes fault, and complex structure, processing, assembly process process are poor.
For addressing this problem, adopt the form of improving very heavy structure and very heavy spring in the time of usually.It is very heavy that patent application 96105603.7 adopts magnet to replace very heavy spring to hold, though solved because of very heavy spring is out of shape, fractureing causes failure problems, but still have noise and baroque problem.Patent application 94213053.7 is adopted and process skewed slot on axle sleeve, and built-in spring and roller, to substitute ratchet, very heavy and very heavy spring; Patent application 200620025043.6 adopts rail slot and built-in steel ball to replace ratchet and very heavy.More than two kinds of schemes all solved noise and because of very heavy spring distortion, fractureing causes failure problems, but structure is comparatively complicated, processing, assembly process process are poor.
Summary of the invention
The utility model is problems such as existing flywheel noise is big, complex structure, processing and assembling difference in order to solve, and a kind of noiseless transmission flywheel is provided.
The utility model is to adopt following technological scheme to realize: a kind of noiseless transmission flywheel, the axle sleeve that comprises external tooth cover and be assemblied in its inner ring, the external tooth cover outer ring is provided with sprocket wheel carries out chaindriven external tooth, the inner ring both sides are respectively equipped with the spin of annular distribution, the spin outside is provided with the gland that is assembled together with external tooth cover and axle sleeve, the axle sleeve center is the wheel hole that cooperatively interacts with wheel shaft, innovative point of the present utility model is to have retaining groove on the inner ring of external tooth cover, closely be wound with close on the axle sleeve outer ring around flexure spring, closely upwards turn up the formed retaining in back around flexure spring one end and snap in the retaining groove of external tooth cover, the other end is a free end.
In order further to optimize the structure of flywheel, described close opposite and constitute to dextrorotation spring and the left-handed spring that twine both sides respectively by winding direction by neutral position, axle sleeve outer ring around flexure spring.Adopt symmetrically arranged left-handed spring and dextrorotation spring, can make axle sleeve stressed evenly, guarantee that the relative movement between axle sleeve and the external tooth cover is more steady; Described close cross section around flexure spring is a rectangle, with the surface of contact of increasing with axle sleeve.
Compared with prior art, the utility model adopts flexure spring, makes that the relative movement between external tooth cover and the axle sleeve does not have noise, and only needs 5 accessories except that spin, simple in structure, processing, assembly process process is good, and cost of production is low, and interchangeability is good, the comparable freewheel of radial dimension is littler, economical with materials, applied widely, have good use value and promotional value.
Description of drawings
Fig. 1 is an erection drawing of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Among the figure: the 1-external tooth cover; The 2-spin; The 3-gland; 4-dextrorotation spring; The 5-left-handed spring; The 6-axle sleeve; The 7-external tooth; 8-takes turns the hole; The 9-retaining groove; 10-keeps off head.
Embodiment
Noiseless transmission flywheel, as shown in Figure 1, the axle sleeve 6 that comprises external tooth cover 1 and be assemblied in its inner ring, external tooth cover 1 outer ring is provided with sprocket wheel carries out chaindriven external tooth 7, the inner ring both sides are respectively equipped with the spin 2 of annular distribution, spin 2 outsides are provided with the gland 3 that is assembled together with external tooth cover 1 and axle sleeve 6, axle sleeve 6 centers are the wheel hole 8 that cooperatively interacts with wheel shaft, as shown in Figure 2, have retaining groove 9 on the inner ring of external tooth cover 1, closely be wound with close on axle sleeve 6 outer rings around flexure spring, cross section is a rectangle, close opposite by winding direction around flexure spring, and be made of to dextrorotation spring 4 and the left-handed spring 5 that twine both sides respectively neutral position, axle sleeve 6 outer ring, dextrorotation spring 4 and left-handed spring 5 one ends (promptly twining starting point) are upwards turned up the formed retaining in back 10 and are snapped in the retaining groove 9 of external tooth cover 1, and the other end is a free end.
When dynamic when making external tooth cover 1 rotating speed surmount axle sleeve 6, external tooth cover 1 drives dextrorotation springs 4 and left-handed spring 5 rolling-in on axle sleeve 6 by retaining groove 9, makes two spring band moving axis cover 6 rotations synchronously.When sliding or axle sleeve 6 rotating speeds when being higher than external tooth cover 1, external tooth cover 1 drives dextrorotation spring 4 and left-handed spring 5 loosens, and separates with axle sleeve 6.
Claims (3)
1. noiseless transmission flywheel, the axle sleeve (6) that comprises external tooth cover (1) and be assemblied in its inner ring, external tooth cover (1) outer ring is provided with sprocket wheel carries out chaindriven external tooth (7), the inner ring both sides are respectively equipped with the spin (2) of annular distribution, spin (2) outside is provided with the gland (3) that is assembled together with external tooth cover (1) and axle sleeve (6), axle sleeve (6) center is the wheel hole (8) that cooperatively interacts with wheel shaft, it is characterized in that having retaining groove (9) on the inner ring of external tooth cover (1), closely be wound with close on axle sleeve (6) outer ring around flexure spring, closely upwards turn up the formed retaining in back (10) around flexure spring one end and snap in the retaining groove (9) of external tooth cover (1), the other end is a free end.
2. a kind of noiseless transmission flywheel according to claim 1, it is characterized in that described close around flexure spring by winding direction opposite and dextrorotation spring (4) and left-handed spring (5) formation that twine to both sides respectively by axle sleeve (6) neutral position, outer ring.
3. a kind of noiseless transmission flywheel according to claim 1 and 2 is characterized in that close cross section around flexure spring is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201043738U CN201461792U (en) | 2009-08-24 | 2009-08-24 | Noiseless transmission flywheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201043738U CN201461792U (en) | 2009-08-24 | 2009-08-24 | Noiseless transmission flywheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461792U true CN201461792U (en) | 2010-05-12 |
Family
ID=42389145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201043738U Expired - Fee Related CN201461792U (en) | 2009-08-24 | 2009-08-24 | Noiseless transmission flywheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137453A (en) * | 2021-05-19 | 2021-07-20 | 江苏赫夫特齿轮制造有限公司 | Clutch flywheel structure suitable for continuous operation type flying shear |
-
2009
- 2009-08-24 CN CN2009201043738U patent/CN201461792U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137453A (en) * | 2021-05-19 | 2021-07-20 | 江苏赫夫特齿轮制造有限公司 | Clutch flywheel structure suitable for continuous operation type flying shear |
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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: 20100512 Termination date: 20120824 |