CN2117315U - Chain guard of bicycle - Google Patents
Chain guard of bicycle Download PDFInfo
- Publication number
- CN2117315U CN2117315U CN 91225130 CN91225130U CN2117315U CN 2117315 U CN2117315 U CN 2117315U CN 91225130 CN91225130 CN 91225130 CN 91225130 U CN91225130 U CN 91225130U CN 2117315 U CN2117315 U CN 2117315U
- Authority
- CN
- China
- Prior art keywords
- tray
- bicycle
- cone pulley
- utility
- model
- 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.)
- Granted
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to a chain guard tray of bicycle, which is arranged on the internal side of a back cone pulley of an external speed-changing bicycle to prevent chains from falling off. The utility model is in the shape of a circle or a regular polygon, a tray face is concave inward and is pateriform, the bottom of the tray has a certain slope gradient, and the center has a round hole and the tray outward forms a boss. When the chain guard tray is sheathed on a back shaft skin via the round hole, the external boss enters an inner hole of the back cone pulley, and the chain guard tray rotates with the back cone pulley together. A decoration hole is punched on the tray face, a reinforcement rib is punched on an external margin, and the external margin hoods edges inward. The utility model has the advantage of simple structure, and the utility model can effectively prevent the bicycle chains from falling off and have a certain decoration action, being specially suitable for being used as the chain guard tray of the external speed-changing bicycle.
Description
The utility model relates to a kind of device of cone pulley inboard to prevent that chain from inwardly coming off behind the outer variable speed bicycle that be installed in.
Between the back cone pulley of outer variable speed bicycle of the prior art and the bicycle spoke certain space is arranged all, in the cycling process, bicycle transmission chain inwardly comes off easily and slips in the space between cone pulley and the spoke, in case chain releasing then will hinder normally riding of bicycle.
The purpose of this utility model is that design a kind ofly can prevent the device that bicycle transmission chain inwardly comes off effectively.
To achieve these goals, suit one circle or equilateral polygon retaining chain drum inwardly comes off to stop cycle chain on the backshaft skin between cone pulley inboard and the spoke behind the bicycle.Below in conjunction with specific embodiment to the utility model voluntarily the technical characterictic of car bumper chain drum be described in further detail.
Accompanying drawing 1 is the front elevation of car bumper chain drum voluntarily;
Accompanying drawing 2 is the right cutaway view of car bumper chain drum voluntarily.
With reference to the accompanying drawings 1 and accompanying drawing 2, the utility model car bumper chain drum 1 voluntarily is circle or equilateral polygon, the recessed inwards pateriform that is of card, and trying to get to the heart of a matter 2 has certain slope.The center of retaining chain drum 1 has a circular hole 3 and outwards forms outer lug boss 4, when retaining chain drum 1 is sleeved on the bicycle rear axle skin 5 by circular hole 3, outer lug boss 4 enter in the endoporus of back cone pulley and make retaining chain drum 1 subsequently cone pulley rotate together.The card upper punch of retaining chain drum 1 has decoration hole 6, and its outer rim is dashed to be had reinforced rib 7 and wrap up in the limit inwards.
The utility model structure is very simple, can prevent effectively that cycle chain from inwardly coming off, and certain beautifying and decorating effect is arranged.The utility model is particularly suitable for the retaining chain drum as outer variable speed bicycle.
Claims (1)
1, a kind ofly is installed in the chain drum of car bumper voluntarily that the cone pulley inboard inwardly comes off to prevent chain behind the outer variable speed bicycle, it is characterized in that it is circle or equilateral polygon, the recessed inwards pateriform that is of card, the certain slope of having tried to get to the heart of a matter; The center of dish has circular hole and outwards forms outer lug boss, the retaining chain drum promptly is contained on the bicycle rear axle skin by this circle hole sleeve, outer lug boss enter in the cone pulley endoporus of back and make the retaining chain drum subsequently cone pulley rotate together, the card upper punch has decoration hole, outer rim is dashed to be had reinforced rib and wraps up in the limit inwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91225130 CN2117315U (en) | 1991-09-21 | 1991-09-21 | Chain guard of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91225130 CN2117315U (en) | 1991-09-21 | 1991-09-21 | Chain guard of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117315U true CN2117315U (en) | 1992-09-30 |
Family
ID=4931466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91225130 Granted CN2117315U (en) | 1991-09-21 | 1991-09-21 | Chain guard of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117315U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418843C (en) * | 2004-12-09 | 2008-09-17 | 株式会社岛野 | Bicycle crankset |
| CN100436873C (en) * | 2004-08-27 | 2008-11-26 | 本田技研工业株式会社 | Gear-shifting apparatus |
-
1991
- 1991-09-21 CN CN 91225130 patent/CN2117315U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436873C (en) * | 2004-08-27 | 2008-11-26 | 本田技研工业株式会社 | Gear-shifting apparatus |
| CN100418843C (en) * | 2004-12-09 | 2008-09-17 | 株式会社岛野 | Bicycle crankset |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |