Electric powered bicycle
a technology of electric power and bicycle, applied in the direction of bicycles, hybrid vehicles, propulsion by batteries/cells, etc., can solve the problem of extreme acceleration of bicycles and produce uncontrollable speed
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
first embodiment
Referring now to FIGS. 3 and 5, an electric powered bicycle according to the invention is generally shown. In FIGS. 3 and 5, the same reference numerals are used to denote the same components or parts as those in the prior art as shown in FIG. 2.
In FIG. 3, the bicycle is manually driven by pedal 24, a crank, chainset 23, chain 25 and rear sprocket 27 provided on a rear wheel 26 that are similar to those of the conventional bicycle. A motor 1 providing an auxiliary power source is mounted on a bracket 32 on the frame 21 in combination with a gearbox G. The horse power of motor 1 is transferred to the rear wheel 26 from the gearbox G through an output gear 30 and another gear 31 mounted coaxially with the rear sprocket 27. The power supply or battery (not shown) for the motor 1 is also installed in a luggage carrier 35 or other space within portions of the frame.
A switch 7 for turning the motor 1 on or off is electrically connected between the power supply and the motor 1. Switch 7 ha...
second embodiment
FIG. 6 shows a schematic side view of an electric powered bicycle according to the present invention. The construction of this embodiment is identical to that of FIG. 3 except that the motor 1 and gearbox G are carried by a support shaft 37 provided on the front fork 34 to drive the tire of the front wheel 33 of the bicycle by an output roller 38 of the gearbox G. The output roller 38 is urged by a spring (not shown)to a side wall of the tire 33 and the switch 7 and arm 17 are similar to those of FIG. 3 except that the plate 19 is mounted on the frame 21.
FIG. 7 shows a schematic partial front view of an electric powered bicycle of FIG. 6. In FIG. 7, the output roller 38 is urged by the spring (not shown) to one side of the tire 33 and another idle roller 39 opposite to the output roller 38 is provided to fairly transfer the drive force from the output roller 38 to the tire of the front wheel 33. This idle roller 39 is rotatably supported on a support member 40 carried by another sup...
third embodiment
Referring now to FIG. 11, a DC motor control circuit suitable for use in an electric powered bicycle according to the invention is generally shown. In FIG. 11, the same reference numerals are used to denote the same components or parts as those in the prior art circuit as shown in FIG. 1 and a detailed description is omitted. In this control circuit, a gradient switch 28 is connected between the base of the detection transistor 6 and ground. The gradient switch 28 is mounted on the frame 21 of the bicycle as shown in FIGS. 3 and 6 so that it turns on when the bicycle is running downhill on a road having, for example, a 5 degree downhill angle. Then, the detection transistor 6 is turned off to shut off the power supply to the DC motor The gradient switch 28 is described in detail hereafter.
The pulse generator circuit 8 consists of a bistable multivibrator flip flop equivalent to the combination of the pulse generator 8 and transistor 9 as shown in FIG. 1. The generator 8 comprises tw...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More