KR20120086463A - Power transmission apparatus of bicycle - Google Patents
Power transmission apparatus of bicycle Download PDFInfo
- Publication number
- KR20120086463A KR20120086463A KR1020110007711A KR20110007711A KR20120086463A KR 20120086463 A KR20120086463 A KR 20120086463A KR 1020110007711 A KR1020110007711 A KR 1020110007711A KR 20110007711 A KR20110007711 A KR 20110007711A KR 20120086463 A KR20120086463 A KR 20120086463A
- Authority
- KR
- South Korea
- Prior art keywords
- bicycle
- power transmission
- diameter
- drive gear
- driven gear
- Prior art date
Links
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/02—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of unchangeable ratio
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
- B62M9/02—Transmissions characterised by use of an endless chain, belt, or the like of unchangeable ratio
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
- B62M3/08—Pedals
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
SUMMARY OF THE INVENTION An object of the present invention is to provide a power transmission apparatus for a bicycle that enables a speed increase, an uphill driving, a long distance driving, and the like with a small force by rotating the front screw by the gear transmission method of the bicycle.
The power transmission device of the bicycle of the present invention for achieving this object,
A drive gear supported by the frame of the bicycle as a shaft and having a pair of pedals having a phase difference of 180 degrees on both sides of the shaft; A driven gear axially supported on the frame of the bicycle, meshing with the drive gear, the driven gear having a diameter less than 1/2 of the diameter of the drive gear; A power transmission shaft axially supported on the frame of the bicycle, meshing with the driven gear, the power transmission shaft having a diameter of 1/2 or less than the diameter of the driven gear; It is installed on the power transmission shaft is connected to the rear sprocket and the chain, the front sprocket formed larger than the diameter of the drive gear; consists of.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to bicycles, and more particularly, to a power transmission device for a bicycle, which enables the most efficient transmission of power generated from a person to a wheel.
An example of an environmentally friendly means of transportation without pollution is a bicycle. The bicycle's power transmission means, ie, a structure that transmits power generated from a person to the rear wheel, a propulsion wheel, has a pair of pedals 180 degrees on an axis. It consists of a front sprocket installed with a phase difference and a rear sprocket installed on the shaft of the rear wheel and connected to the front sprocket and the chain.
Therefore, the front sprocket rotates by the rotational force applied to the pedal, and the power is transmitted to the rear sprocket through the chain to drive the rear wheel.
However, such a structure is very difficult to drive a long distance because it consumes a lot of power by changing the power generated from a person completely even when the driving conditions change, such as normal driving, increasing speed, and going uphill.
Accordingly, an object of the present invention is to provide a power transmission device for a bicycle which enables a speed increase, an uphill driving, a long distance driving, and the like with a small force by rotating the front screw by the gear transmission method of the bicycle.
The power transmission device of the bicycle of the present invention for achieving this object,
A drive gear supported by the frame of the bicycle as a shaft and having a pair of pedals having a phase difference of 180 degrees on both sides of the shaft;
A driven gear axially supported on the frame of the bicycle, meshing with the drive gear, the driven gear having a diameter less than 1/2 of the diameter of the drive gear;
A power transmission shaft axially supported on the frame of the bicycle, meshing with the driven gear, the power transmission shaft having a diameter of 1/2 or less than the diameter of the driven gear;
It is installed on the power transmission shaft is connected to the rear sprocket and the chain, the front sprocket formed larger than the diameter of the drive gear; consists of.
The present invention having the above configuration has the advantage that it does not take great force even in normal driving, speeding uphill, long distance driving by transmitting a large power and a large number of revolutions to the rear wheel with a small force.
Accordingly, the burden of using a bicycle is greatly reduced, so that anyone of all ages can easily use it, which is environmentally friendly as a pollution-free means of transportation, and has an effect of having a moderate exercise effect by continuous bicycle use.
1 is a view showing an example of a bicycle to which the present invention is applied.
Figure 2 is a view showing the structure of the power transmission device according to the present invention.
Figure 3 is a plan sectional view of a power transmission device according to a first embodiment of the present invention.
4 is a plan sectional view of a power transmission device according to a second embodiment of the present invention.
5 is a plan sectional view of a power transmission device according to a third embodiment of the present invention.
6 is a perspective view of a power transmission device according to a fourth embodiment of the present invention.
Fig. 7 is a plan sectional view of Fig. 6;
8 is a plan sectional view of a power transmission device according to a fifth embodiment of the present invention.
The present invention will be described in detail with reference to the accompanying drawings.
1 is a view showing a
At the rear of the
In addition, the rear of the driven
The
At this time, since the
The diameter of the driven
For example, the
This is because the speed is increased by the
3 is a structure in which the
That is, the shaft of the
The
FIG. 5 is a third embodiment of the present invention, in which power is distributed by two
To this end, the center portion of the
That is, the
In addition, the first driven
Of course, the
The
The
This structure is independent of each other by the
On the other hand, when the interval between the
Since the first driven
FIG. 8 is a fifth embodiment of the present invention, in which the
210: frame 211: inner frame
220,230: Pedal 240,242: Drive gear
250,252: driven gear 260: power transmission shaft
270: front sprocket 300: rear sprocket
400: chain
Claims (2)
A driven gear axially supported on the frame of the bicycle, meshing with the drive gear, the driven gear having a diameter less than 1/2 of the diameter of the drive gear;
A power transmission shaft axially supported on the frame of the bicycle, meshing with the driven gear, the power transmission shaft having a diameter of 1/2 or less than the diameter of the driven gear;
And a front sprocket installed on the power transmission shaft and connected to a rear sprocket and a chain, the front sprocket having a diameter larger than that of the drive gear.
A first driven gear axially supported on the frame of the bicycle, meshing with the first drive gear, the first driven gear having a diameter of 1/2 or less than the diameter of the first drive gear;
A second side mounted side by side of the first drive gear, supported independently by the axis of the frame of the bicycle independently of the first drive gear, and having a phase difference of 180 degrees with the first pedal on the shaft; Drive gear;
A second driven gear axially supported on the frame of the bicycle, meshing with the second drive gear, the second driven gear having a diameter of 1/2 or less than the diameter of the second drive gear;
A power transmission shaft axially supported by the frame of the bicycle, the first driven gear and the second driven gear meshed with each other, and having a diameter of 1/2 or less than the diameter of the first driven gear or the second driven gear;
And a front sprocket installed on the power transmission shaft and connected to the rear sprocket and the chain, the front sprocket having a diameter larger than the diameter of the first drive gear or the second drive gear.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110007711A KR20120086463A (en) | 2011-01-26 | 2011-01-26 | Power transmission apparatus of bicycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110007711A KR20120086463A (en) | 2011-01-26 | 2011-01-26 | Power transmission apparatus of bicycle |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20120086463A true KR20120086463A (en) | 2012-08-03 |
Family
ID=46872259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020110007711A KR20120086463A (en) | 2011-01-26 | 2011-01-26 | Power transmission apparatus of bicycle |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20120086463A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107512361A (en) * | 2016-06-16 | 2017-12-26 | 天津市艾尔奇自行车股份有限公司 | A kind of meshed transmission gear bicycle |
-
2011
- 2011-01-26 KR KR1020110007711A patent/KR20120086463A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107512361A (en) * | 2016-06-16 | 2017-12-26 | 天津市艾尔奇自行车股份有限公司 | A kind of meshed transmission gear bicycle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |