JPH08205500A - Direct type generator for bicycle - Google Patents

Abstract

PURPOSE: To attempt stable and continuous supply of power by improving the phenomenon that a pedal becomes heavy at the time of use which is a disadvantage of a conventional generator for bicycle. CONSTITUTION: A power generating coil 1 or a magnet 2 is rotated for power generation through direct use of rotation of wheel of a bicycle. As shown in the figure, in the case of a coil fixing type, the magnet 2 is attached to a disc 3 of a non-magnetic material fixed to a rotating shaft of tire and a power generating coil 1 fixed to the frame of bicycle is arranged in both sides. On the contrary, in the case of the magnet fixing type, a coil is attached to a non-magnetic material coil and it is located to pass through a groove of U-shaped magnet fixed to the frame. A battery is also provided os that electricity generated when the tire is rotated is accumulated therein.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention enables efficient power generation with little energy loss by directly utilizing the rotating force of a coil or magnet of a generator and the rotation of a bicycle tire.

[0002]

2. Description of the Related Art Conventionally, a rotating shaft portion of a generator having the same structure as a motor is brought into contact with a tire of a bicycle to indirectly obtain a rotating force to generate electric power. However, there is a drawback that the pedals become heavy during use, which seems to be linked to the phenomenon of no-light operation at night.
Also, the electricity generated was directly connected to the light, so it was very dark when the number of tire rotations was low, such as when climbing a slope.

[0003]

It is possible to eliminate the drawback that the pedal becomes heavy during power generation, and to supply stable power even when the number of rotations of the tire is low.

[0004]

[Means for Solving the Problems] As shown in FIG. 1, a large number of light and strong magnets are attached along a circle to a disc of a non-magnetic material fixed to a rotating shaft of a tire. On both sides of the disk,
The generator coil (many microcoils hardened with resin) is fixed to the frame so that it is sandwiched as shown in FIG. This is just like a disc brake. Conversely, as shown in Fig. 4, fix the magnet to the bicycle frame,
We also created a fixed magnet type with a magneto coil attached to the disk. In both cases, the tires rotate to generate electricity.

[0005]

[Operation] Since it is a non-contact type, there is no disadvantage that the pedal becomes heavy due to friction with the tire as in the past.
Moreover, since electric power is generated while the tire is rotating, it is possible to constantly supply electric power stably by storing unnecessary electricity in the battery.

[0006]

[Examples] This generator and a battery are combined to store electric power for continuous power generation by rotation of tires. In addition to bicycles, this principle is applied to generators for automobiles and motorcycles. However, for automobiles and motorcycles, the rotation from the engine is directly applied. In addition, it is applied to anything with wheels such as tricycles.

[0007]

EFFECTS OF THE INVENTION According to the present invention, not only is the load on the occupant for power generation eliminated, but also continuous power generation is possible, and it is possible to apply a storage battery. Therefore, not only can the constant brightness of the light be obtained regardless of the speed, but also a turn signal, a brake lamp, a radio, etc. can be mounted, which makes the vehicle safer. Also, non-lighting operation is reduced.

[Brief description of drawings]

FIG. 1 is a coil fixed type. Overall side view.

[Fig. 2] Part of the side surface of the fixed coil skeleton model

[Figure 3] Coil fixed type front up

FIG. 4 is a side view of a fixed magnet type.

[Explanation of symbols]

 1 Generator coil 2 Magnet 3 Rotating desk 4 Bicycle frame 5 Wheel rotation axis

Claims (2)

[Claims] 1. An apparatus for generating electric power by rotating a tire by fixing a generator coil to a frame of a bicycle and attaching a magnet to a disk fixed to a rotating shaft of the tire. 2. The generator according to claim 1, wherein a magnet is fixed to a bicycle frame, and a magneto coil is attached to a disk fixed to a rotating shaft of a tire.