JP3163417U - Bicycle power generator - Google Patents

Abstract

A bicycle power generator that can be easily assembled is provided. A power generation unit, a fixed frame, a power storage unit, and a light emitting unit are provided. The power generation unit 20 is provided in the power transmission chain 15 and includes a housing, a small generator, a drive gear, and a gear set. The fixed frame 30 has its lower end fixed to the frame 11 by the positioning unit, and its upper end fixed to the position of the housing so that the drive gear and the power transmission chain 15 are fitted. The power storage unit 40 includes a case, a first wiring that is electrically connected to the small generator, and a storage battery that stores electrical energy obtained from the small generator. The light emitting unit 50 and the power storage unit 40 are electrically connected. Therefore, the power generation efficiency can be increased and the user can operate conveniently. [Selection] Figure 1

Description

  The present invention relates to a bicycle power generator.

  In recent years facing global warming and resource depletion, energy conservation and carbon dioxide reduction have become global goals. Here, bicycles have the advantages of ease of use and environmental friendliness, and can be used as training equipment, making them the most popular means of transportation.

  Bicycles do not have the essential lighting equipment for cars, so there are many traffic issues when the bicycles run at night. The traffic department stipulates that bicycles must always be equipped with lighting equipment to prevent accidents when the bicycle is running at night.

A conventional bicycle lighting system will be described as follows.
As the most used type, in a type in which a light-emitting device having a battery inside or a rechargeable light-emitting device is installed on a bicycle frame, the lamp ON / OFF is controlled by a switch of the light-emitting device. When using a battery, it is necessary to always replace the battery, which is expensive and adversely affects the environment. In addition, the rechargeable light emitting device is inconvenient to use.

  In addition, there is a light-emitting device that uses bicycle travel as a power source for power generation. Such a light emitting device includes a small generator and a drive ring. The drive ring that rotates with the small generator rotates as the tire or hub rotates. When the drive ring is driven by the rotation of the tire, the tire may be worn out and the life of the tire may be shortened. Further, when the drive ring is driven by the rotation of the hub, additional parts must be added in the vicinity of the hub, which complicates the assembly process. Since the space in the vicinity of the hub is limited, the diameter of the drive ring is limited, and there is a possibility that improvement in the rotational speed of the drive ring and the efficiency of the light emitting device may be limited.

The purpose of the present invention is to drive the generator by driving the rotation of the drive gear by the linear motion of the power transmission chain to generate electricity and store the generated electric energy in the storage battery and can be used for the light emitting unit or other electric appliances. There is provided a bicycle power generator that can be easily assembled.
Another object of the present invention is to provide a bicycle power generator that improves power generation efficiency.

In order to achieve the above object, the bicycle power generator of the present invention is used for a bicycle having a frame, a front wheel, a rear wheel, a pedal unit, and a power transmission chain. The bicycle power generator includes a power generation unit, a fixed frame, a power storage unit, and a light emitting unit. The power generation unit is provided in the power transmission chain, and includes a housing, a small generator, a drive gear, and a gear set. The housing has a notch in the bottom. The small generator is provided in the housing. The drive gear is provided in the housing, a part of the drive gear protrudes from the notch groove, and teeth having a pitch corresponding to the interval between the power transmission chains are provided, and can be fitted to the power transmission chain. The gear set is provided in the housing and is driven by a drive gear to drive a small generator. The lower end of the fixed frame is fixed to the frame by the positioning unit, and the position of the housing is fixed such that the upper end is engaged with the drive gear and the power transmission chain. The power storage unit includes a case, a first wiring that is electrically connected to the small generator, and a storage battery that stores electrical energy obtained from the small generator. It is electrically connected to the light emitting unit and the power storage unit.
According to the present invention, the power generation efficiency can be increased and the user can conveniently operate.

The schematic diagram which shows the state which applied the bicycle electric power generating apparatus of one Embodiment of this invention to the bicycle. The principal part enlarged view of the bicycle electric power generating apparatus of one Embodiment of this invention. The perspective view which shows the characteristic of the bicycle electric power generating apparatus of one Embodiment of this invention. The perspective view which shows the characteristic of the bicycle electric power generating apparatus of one Embodiment of this invention. The schematic diagram which shows the characteristic of the bicycle electric power generating apparatus of one Embodiment of this invention. The schematic diagram which shows the characteristic of the bicycle electric power generating apparatus of one Embodiment of this invention.

Hereinafter, a bicycle power generator according to an embodiment of the present invention will be described with reference to the drawings.
(One embodiment)
As shown in FIG. 1, a bicycle power generator 1 according to an embodiment of the present invention is applied to a bicycle 10 having a frame 11, a front wheel 12, a rear wheel 13, a pedal unit 14, and a power transmission chain 15. The bicycle power generator 1 includes a power generation unit 20, a fixed frame 30, a power storage unit 40, and a light emitting unit 50.

  The power generation unit 20 is provided on the power transmission chain 15 and includes a housing 21, a drive gear 23, a small generator 25, and a gear set 24. The housing 21 has a notch groove 22 formed at the bottom and accommodates the small generator 25 inside. The drive gear 23 is provided inside the housing 21, and a part thereof protrudes from the notch groove 22, and teeth having a pitch corresponding to the interval of the power transmission chain 15 are formed. Further, the teeth of the drive gear 23 and the power transmission chain 15 can be fitted, and the drive gear 23 rotates by the linear motion of the power transmission chain 15.

  The gear set 24 is composed of a plurality of gears meshing with each other. In the present embodiment, at least one gear of the gear set 24 rotates coaxially with the drive gear 23. The other gears of the gear set 24 are provided to be driven by gears that rotate coaxially with the drive gear 23 and drive the small generator 25 to generate electrical energy.

  The lower end portion of the fixed frame 30 is fixed to the frame 11 by the positioning unit 31. In the case of this embodiment, the fixed frame 30 is fixed on the frame 11 between the pedal unit 14 and the rear wheel 13 by the lock unit 32. The upper end portion of the fixed frame 30 fixes the power generation unit 20 so that the housing 21 of the power generation unit 20 is positioned on the power transmission chain 15.

  There are two types of bicycles that can be shifted and those that cannot be shifted. In the case where the bicycle 10 cannot shift, the housing 21 is fixed to the fixed frame 30 using the lock unit 32 in accordance with the position of the power transmission chain 15 as shown in FIG. In the present embodiment, the fixed frame 30 has an “L” shape.

  In the case where the bicycle 10 is a type capable of shifting, as shown in FIGS. 4, 5, and 6, the housing 21 is movably fixed to the fixed frame 30 in accordance with the shift position of the power transmission chain 15. Two holes 27 that are parallel to each other are formed in the housing 21 in the lateral direction. The fixed frame 30 is formed with two rods 33 that are parallel to each other and that correspond to the holes 27. Therefore, the housing 21 moves to the left and right according to the shift position of the power transmission chain 15 so that the drive gear 23 and the power transmission chain 15 are always fitted.

  As shown in FIG. 2, the power storage unit 40 is electrically connected to the small generator 25 of the power generation unit 20 through the first wiring 26. The power storage unit 40 includes a case 41 and a storage battery 42, and the storage battery 42 stores electrical energy generated by the small generator 25. The light emitting unit 50 is electrically connected to the power storage unit 40.

  A power output connector 43 is provided on the case 41 of the power storage unit 40. In the present embodiment, the power output connector 43 is a USB interface and can be connected to an external electric device such as a mobile phone, MP3, or digital camera.

  As the light emitting unit 50, for example, an LED lamp is used. The light emitting unit 50 is fixed to a predetermined location of the frame 11 and can be electrically connected to the power storage unit 40 by the second wiring 51. Further, the light emitting unit 50 can be provided inside the case 41 of the power storage unit 40, and the light emitting unit 50 and the power storage unit 40 can be integrated and fixed at a predetermined position of the frame 11. For example, the light emitting unit 50 and the power storage unit 40 are integrally provided on the handle 16 so that the mounting becomes convenient.

The effects of the present invention will be described as follows.
(1) The present invention drives a drive gear fitted to a power transmission chain by linear motion of the power transmission chain during bicycle traveling. Then, the generator is driven by the drive gear to generate electric energy and store it in the power storage unit. The electric energy can be provided to the light emitting unit or the external electric device, and the self-sufficiency rate of the electric energy can be increased.

  (2) The present invention can enhance the convenience of assembly.

  (3) According to the present invention, the generator is driven by the linear motion of the power transmission chain, and the drive gear rotates tens of times by the user stepping on the pedal unit once. Therefore, the power generation efficiency can be improved.

DESCRIPTION OF SYMBOLS 1 ... Bicycle generator 10 ... Bicycle 11 ... Frame 12 ... Front wheel 13 ... Rear wheel 14 ... Pedal unit 15 ... Power transmission chain 16 ... Handle 20 ... Power generation unit 21 ... Housing 22 ... Notch groove 23 ... Drive gear 25 ... Small generator 26 ... First wiring 27 ... Hole 30 ... Fixed frame 31 ... Positioning unit 32 ... Lock unit 33 ... Rod 40 ... Power storage unit 41 ... Case 42 ... Storage battery 43 ... Power output connector 50 ... Light emitting unit 51 ... Second wiring

Claims (6)

A bicycle power generator used for a bicycle having a frame, a front wheel, a rear wheel, a pedal unit, and a power transmission chain,
A housing provided in the power transmission chain and having a notch groove formed in the bottom, a small generator provided in the housing, a driving gear provided in the housing, and a gear set driven by the driving gear A power generation unit;
A lower end portion is fixed to the frame by a positioning unit, and an upper end portion is a fixed frame that fixes the position of the housing so that the drive gear and the power transmission chain are fitted with each other.
A power storage unit having a case, a first wiring electrically connected to the small generator, and a storage battery storing electrical energy obtained from the small generator;
A light emitting unit electrically connected to the power storage unit,
The drive gear partially protrudes from the notch groove, provided with teeth having a pitch corresponding to the interval of the power transmission chain, and can be fitted to the power transmission chain,
The bicycle power generator according to claim 1, wherein the gear set is provided in the housing and drives the small generator.   The bicycle power generator according to claim 1, wherein the power transmission chain rotates at a single speed, and the housing is fixed to the fixed frame in accordance with a position of the power transmission chain.   The power transmission chain rotates at a multi-stage speed, the housing is fixed to the fixed frame so as to be movable in accordance with a change in the position of the power transmission chain, and the housing is provided with holes that balance each other laterally, The fixed frame is provided with two rods corresponding to the holes, and the fitting of the drive gear and the power transmission chain is maintained so that the housing is moved by the movement of the power transmission chain. The bicycle power generator according to claim 1.   The bicycle power generation device according to claim 1, wherein a power output connector is provided in the case of the power storage unit, and other electric appliances can be connected thereto.   2. The bicycle power generator according to claim 1, wherein the light emitting unit includes an LED lamp, is disposed at a predetermined position of the frame, and is electrically connected to the power storage unit through a second wiring.   2. The bicycle power generator according to claim 1, wherein the light emitting unit includes an LED lamp, is provided in a case of the power storage unit, and is disposed at a predetermined position of the frame together with the power storage unit.

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