CN2373365Y - Improved structure of sprocket tooth for bicycle - Google Patents
Improved structure of sprocket tooth for bicycle Download PDFInfo
- Publication number
- CN2373365Y CN2373365Y CN 99212861 CN99212861U CN2373365Y CN 2373365 Y CN2373365 Y CN 2373365Y CN 99212861 CN99212861 CN 99212861 CN 99212861 U CN99212861 U CN 99212861U CN 2373365 Y CN2373365 Y CN 2373365Y
- Authority
- CN
- China
- Prior art keywords
- tooth
- bicycle
- utility
- model
- gear
- 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
Links
- 230000007704 transition Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 6
Images
Landscapes
- Gears, Cams (AREA)
Abstract
The utility model relates to a bicycle sprocket profile of tooth improvement structure especially is applicable to a high, the small in noise bicycle drive sprocket of transmission efficiency. The utility model discloses a bicycle sprocket profile of tooth improvement structure is equipped with a bellied arc surface in the root of gear on the basis of the traditional teeth of a cogwheel. Compared with the prior art, the utility model, have the advantage such as chain and sprocket feed are nimble, the noise is low, transmission efficiency is higher.
Description
The utility model relates to a kind of bicycle chain form of gear tooth structure-improved, is particularly useful for a kind of driving efficiency height, bicycle driving chain wheel that noise is little.
Roll that traditional skiving voluntarily, chain-driving are chain realizes transmission agency with the engagement of tooth-formation of gear cambered surface, and the shortcoming of this profile of tooth is that contact surface is big, friction drag is big, and driving force too disperses, and the flexibility ratio of running is not good, produces noise.
The purpose of this utility model provides a kind of arc surface of the root of profile of tooth being made a projection on traditional profile of tooth basis, makes traditional upper thread contact becoming dotted line contact.
The purpose of this utility model is achieved by the following technical solution: promptly it is the arc surface that is provided with a projection on the basis of traditional profile of tooth in the root of gear.
The utility model compared with prior art has that chain and chain sprocket drive are flexible, noise is low, driving efficiency is than advantages such as height.
Description of drawings of the present utility model is as follows:
Fig. 1 is chain and gear state scheme drawing;
Fig. 2 is the sprocket teeth and the stressed scheme drawing of roller transmission of traditional profile of tooth;
Fig. 3 is sprocket teeth of the present utility model and the stressed scheme drawing of roller transmission;
Fig. 4 is a sprocket tooth form specific embodiment scheme drawing of the present utility model.
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 3, bicycle chain form of gear tooth structure-improved of the present utility model is the arc surface R that is provided with a projection on the basis of traditional profile of tooth in the root 1 of gear
b, the arc surface R of projection
bThe place circumference is higher than tooth root circle h---as Fig. 4, and the arc surface R of projection
bPlace tooth root 1 is by protruding circular arc R
bWith the depression circular arc R
aAnd R
cTransition forms.Like this when transmission, the protruding circular-arc tooth surface R of chain De Roll 2 and gear 3
bEngagement makes the contact of traditional upper thread contact becoming dotted line, thereby reaches chain and chain sprocket drive is flexible, noise is low, driving efficiency is higher purpose.
Claims (3)
1. bicycle chain form of gear tooth structure-improved, it is characterized in that: it is provided with the arc surface of a projection in the root of gear on the basis of traditional profile of tooth.
2. bicycle chain form of gear tooth structure-improved according to claim 1 is characterized in that: the arc surface of projection is higher than tooth root circle.
3. bicycle chain form of gear tooth structure-improved according to claim 1 is characterized in that: the arc surface place tooth root of projection is formed by protruding circular arc and depression arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99212861 CN2373365Y (en) | 1999-06-04 | 1999-06-04 | Improved structure of sprocket tooth for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99212861 CN2373365Y (en) | 1999-06-04 | 1999-06-04 | Improved structure of sprocket tooth for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2373365Y true CN2373365Y (en) | 2000-04-12 |
Family
ID=34005425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99212861 Expired - Fee Related CN2373365Y (en) | 1999-06-04 | 1999-06-04 | Improved structure of sprocket tooth for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2373365Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107539418A (en) * | 2016-06-27 | 2018-01-05 | 株式会社岛野 | Bicycle sprocket and bicycle sprocket assembly |
-
1999
- 1999-06-04 CN CN 99212861 patent/CN2373365Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107539418A (en) * | 2016-06-27 | 2018-01-05 | 株式会社岛野 | Bicycle sprocket and bicycle sprocket assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2373365Y (en) | Improved structure of sprocket tooth for bicycle | |
| CN213566340U (en) | Gear bicycle | |
| CN2188069Y (en) | Pedal transmission for bicycle | |
| CN2284190Y (en) | Bicycle driving gear having reverse speed changed | |
| CN2165283Y (en) | Speed-changing chain structure for bicycle | |
| CN2600643Y (en) | One-direction bearing | |
| CN2169593Y (en) | Two speed flying wheel | |
| CN2393811Y (en) | Converse gear for three-wheel motocycle | |
| CN2334949Y (en) | Ratchet backstop gear disc | |
| CN2294916Y (en) | Pedal speed-variable bicycle | |
| CN2259267Y (en) | Feeding wheel for wood working machine | |
| CN2209104Y (en) | Cover chain driving device guide plate for speed-change bicycle | |
| CN201727934U (en) | Scooter with driving mechanism | |
| CN2415789Y (en) | Exercising thrust wheel | |
| CN2192549Y (en) | Light accelerate wheel | |
| CN2701740Y (en) | Motorcycle chain wheel | |
| CN2623578Y (en) | Lever-rack driving pattern bicycle | |
| CN2161557Y (en) | Pneumatic variable speed and transmission | |
| CN2413085Y (en) | One-way energy-saving gear wheel | |
| KR100274056B1 (en) | Double sprocket type motorcycle | |
| CN2202694Y (en) | Chain track leading wheel for tractor | |
| CN2441730Y (en) | Quick power saving star chain mechanism | |
| CN201496512U (en) | Belt pulley | |
| CN2211409Y (en) | High-speed labor-saving bicycle | |
| CN2572126Y (en) | Combined flywheel for motorcycle |
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 |