KR20120001414A - An apparatus of generating electricity for a bicycle - Google Patents

Abstract

PURPOSE: A bicycle power generator is provided to operate a generator without losing a turning force obtained from stepping a pedal of a bicycle, and to uniformly apply the power from an operator to left and right pedals. CONSTITUTION: A bicycle power generator comprises the following: a frame(10) including front wheels(1) and rear wheels(2) located on the front and rear sides of the frame; a power generating drive gear(20) installed on a crank shaft(22) located on the opposite side of a change gear unit(21) located on the central lower side of the frame; a generator(30) including a pinion gear(31) selectively coupling with the power generating drive gear for generating electricity; a generator mounting device(40) for selectively coupling the pinion gear to the power generating drive gear; a fixing board including a sliding supporter on the front side, and a fixing unit for tightening the frame to the supporter; and a moving stand including a T-protrusion combining with a T-groove on the sliding supporter.

Description

Bicycle generator {AN APPARATUS OF GENERATING ELECTRICITY FOR A BICYCLE}

The present invention relates to a bicycle power generation apparatus, and more particularly, to check the road conditions of the front and rear by allowing the bicycle operator to obtain power energy by operating a generator using a pedaling force while driving a bicycle. It relates to a bicycle power generating device which can supply electric power to front, rear vision device, headlight, left and right direction indicators, navigation, or other parts requiring power.

In general, bicycles are equipped with steering, driving and braking systems and have two or more wheels, and the pedals, cranks, chains and rear wheels transmit the pedals to the rear wheels, which are connected to the ground. The front wheel is also a means for moving and moving means to move forward.

Since bicycles are inexpensive and can be driven on narrow roads and are generally not restricted by parking spaces, they are widely used for transportation or leisure, and the number of bicycle users has increased in recent years with regard to low carbon green growth. Doing.

Bicycles are also an attractive recreational tool that is very helpful for your health, so you don't use carbon fuel to solve the air pollution problem. Pedestrians as well as cyclists are enjoying their leisure while driving on the road. In addition, as the population of bicycles is increasing at night, battery headlights are usually attached to the handlebars of bicycles.

Bicycles can be driven by ordinary lanes or roads where bicycle lanes are not established. In this case, bicycle drivers are likely to collide with pedestrians or cars. There is a possibility that suddenly protrudes even in a narrow place, and there is a problem that it is difficult for pedestrians to recognize the situation approaching the bicycle because there is not much noise.

As the population of cyclists is increasing at night, battery headlights must be attached to the handlebars of bicycles at night, so the batteries must be replaced frequently. There is no choice but to.

In general, a generator is a device for converting rotational power into power energy using the principle of electromagnet, and the low-power generator used in the past to solve the problems caused by the conventional battery use the driving force because there is no engine like a car Electricity was generated using the rotational force of the bicycle wheel. That is, the conventional bicycle power generation device is to allow the rotor of the generator to selectively contact the tires of the front wheel or the rear wheel of the bicycle so that the rotor of the generator rotates in accordance with the rotation of the wheel so that electricity is induced by the stator installed inside the generator. To produce electricity.

The electricity produced in this way is supplied to the headlight or other part of the electric power which is installed on the handle of the bicycle.

However, since the conventional bicycle power generation apparatus is configured so that the rotation means is in close contact with the tire portion of the front wheel or the rear wheel to obtain the rotational power, the sliding force cannot be obtained and the rotational force of the front wheel or the rear wheel is reduced by friction. There is a problem that the reduced braking action is made difficult to run and the tire of the front wheel or the rear wheel is damaged by friction and the life is shortened.

The present invention has been made to solve the problems of the conventional bicycle power generation apparatus as described above, an object of the present invention by using the power to press the pedal of the bicycle driver while driving the bicycle power generation efficiency by operating the generator without loss of rotational power It is to provide a bicycle power generation apparatus which improves, equalizes the driver's force applied to the left and right pedals, and prevents unnecessary wear of tires.

Bicycle generator according to the present invention for achieving the above object is installed on the crank shaft extending to the opposite side of the transmission gear unit is provided on the front and rear of the frame, the front wheel and the rear wheel is provided on the center portion of the frame. A power generating drive gear, a pinion gear meshed with the power generating drive gear, and the pinion gear are selectively engaged with the power generating drive gear to generate electricity, and the generator is installed on the frame. And a generator mounting device configured to selectively engage the pinion gear of the generator with the drive gear for power generation if necessary.

Bicycle generator of the present invention is also the generator mounting device is fixed to the frame, the support portion is formed with a sliding T-groove and a concave space on the upper surface, the tightening unit is integrally fixed to the support portion and tightening the frame Fixture consisting of; A movable protrusion having a T protrusion formed to be slidably coupled to the T groove of the support portion at a lower surface thereof, and having a generator coupled to the upper portion thereof; Compression spring is installed in the concave space formed on the upper surface of the fixing unit to apply elasticity to the moving unit in the direction in which the pinion gear is separated from the power generating gear, the pinion gear of the generator is maintained in the state of being engaged with the drive gear for power generation Or it is characterized by consisting of the release state maintenance release portion.

The generator of the present invention is also a rotor that is rotatably installed around the axis of rotation in the concave space formed on the side of the stator to the engaging state release portion, the bottom of the rotor is formed with a snap groove and ridge and handle, the rotor Compression spring for applying elasticity to the lower side in the transverse direction, fixed to the side of the movable table extending toward the rotor and contacting the side of the rotor at the tip and snaps over the ridge of the rotor during engagement Characterized in that it is composed of the holding state release portion consisting of the engaging rod is formed in the inner projection engaging the groove.

Bicycle power generation device according to the present invention is generated by the rotational force of the power generating drive gear installed separately on the crankshaft of the generator of the generator, there is no loss of torque and can increase the power generation efficiency, the drive gear for power generation gear unit It is installed on the opposite side to balance the force applied to the driver's left and right legs.

In addition, the present invention can prevent the wear phenomenon of the wheel appearing in the generator using the conventional rotational force and can also prevent the phenomenon that the braking force is applied directly to the wheel.

1 is a perspective view of a bicycle generator according to the present invention,
2 is an enlarged view of a portion A of FIG. 1;
3 is an enlarged view of a portion b of FIG. 2;
4 is a partial cross-sectional view taken along the line AA in FIG.
5 is a partial cross-sectional view of the generator mounting apparatus showing a state in which a generator is installed in a bicycle frame according to the present invention;
6 is a partial cross-sectional view of the generator mounting apparatus showing the installation state of the generator seen in the X direction in FIG.
Figure 7a is a side view showing an embodiment of the engagement state release unit of the generator according to the present invention, the pinion gear of the generator showing a state separated from the drive gear for power generation,
FIG. 7B is a view showing a state immediately before the pinion gear of the generator is moved and engaged with the driving gear for power generation in FIG. 7A;
FIG. 7C is a view showing a state in which the pinion gear of the generator is completely engaged with the drive gear for power generation in FIG. 7B.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the bicycle generator of the present invention is provided in a bicycle having front wheels 1 and rear wheels 2 provided in front and rear of a frame 10, and drive gears 20 for power generation. ), The generator 30, the generator mounting device 40, and the storage battery (50).

The drive gear 20 for power generation is provided on the crankshaft 22 extended to the opposite side of the transmission gear part 21 provided below the center part of the frame 10, and is wrapped by the cover 23. As shown in FIG. The cover 23 is to prevent contact with the driver's leg for safety, and is sized to wrap not only the drive gear 20 for the generator but also the pinion gear 31 to be described later. The crankshaft 22 is rotated by the crank 4 which operates when the driver steps on the pedal 5.

The generator 30 is provided with a pinion gear 31 which meshes with a power generating drive gear 20 which is rotated by the rotation of the crank shaft 22 described above at the tip of the rotary shaft. ) Generates electricity by engaging with the driving gear 20 for power generation by the driver.

The generator mounting apparatus 40 is configured to install the generator 30 on the frame 10 so as to selectively engage the pinion gear 31 of the generator 30 with the drive gear 20 for power generation if necessary. .

One embodiment of the generator mounting device 40 is a support portion 41b having a sliding T-groove 41a and a concave space 41f formed on an upper surface thereof, and integrally formed with the support portion 41b and a frame 10. Fixing portion 41 consisting of a tightening portion (41c) is fixed by tightening; A movable table 42 having a T protrusion 42a slidably coupled to the T groove 41a of the support part 41b and having a generator 30 coupled to an upper surface thereof; Compression spring 43 is installed in the concave space (41f) formed on the upper surface of the fixing table 41 to apply elasticity to the moving table 42 to push the pinion gear 31 away from the power generating gear 20. ); And a mating state maintaining release part 44.

The tightening portion 41c is opened by elasticity and is firmly fixed to the frame 10 by fastening the bolt 41d and the nut 41e. Although the supporting portion 41b and the fastening portion 41c are shown as an integral part, they may be separately formed and then combined to be assembled.

A plurality of T grooves 41a of the fixing table 41 and T protrusions 42a of the moving table 42 are formed to enable stable movement of the moving table 42 on which the generator 30 is installed.

The compression spring 43 is pushed by the pusher 42b of the movable table 42 when the movable table 42 moves downward so that the pinion gear 31 of the generator 30 engages with the driving gear 20 for power generation. It compresses and exerts a pushing force on the movable table 42 by the restoring force for the compression.

One embodiment of the engagement state release unit 44 is to maintain or release the pinion gear 31 of the generator 30 is engaged to the power generation drive gear 20, both sides of the fixing table 41 It is formed in each of the concave space (41g) rotatably installed around the rotating shaft (44a) with a snap groove (44ba) and ridge 4444, handle 44bc, and locking jaw (44bd) is formed at the bottom A rotor 44b, a compression spring 44c that exerts elasticity in the transverse direction to the lower portion of the rotor 44b, and is fixed to the side of the movable table 42 and extends toward the rotor 44b. A locking rod 44d having an inner protrusion 44da formed in contact with the side surface of the rotor 44b and engaging the snap groove 44ba beyond the ridge 44bb of the rotor 44b when the state of engagement is maintained. )

And at any position of the frame 10, a capacitor 50 for storing electricity generated by the generator 30 is installed, the headlamp 3 is provided in front.

The bicycle generator of the present invention configured as described above acts as follows.

The driver drives while pedaling in the same manner as a normal driving method. When the headlight 3 is used or a camera, a monitor, or the like is provided to look forward and backward, although not shown in the drawing, when the equipment is used, the pinion gear 31 of the generator 30 is used for power generation. The electric power remaining after using the equipment while generating power by being matched with the drive gear 20 is stored in the capacitor 50.

In order to generate electricity, as shown in FIG. 2, the generator 30 is pressed in the direction of the arrow to engage the pinion gear 31 of the generator 30 with the drive gear 20 for power generation which rotates together with the crankshaft 22. Let's do it. When the generator 30 is pressed, the push rod 42b of the movable table 42 of the generator mounting device 40 moves downwardly while pressing the compression spring 43. At this time, the engaging rod of the engagement state release release unit 44 is stopped. The inner protrusion 44da of 44d starts to descend while pressing the side of the rotor 44b.

As can be seen in Figure 3, when the side of the rotor 44b is pressed, the locking bar 44 is lowered while the rotor 44b rotates clockwise about the rotation axis 44a.

FIG. 7A shows a state before the generator 30 is pressed, and FIG. 7B shows that the generator 30 is pressed in the direction of the arrow in the state of FIG. 7A so that the pinion gear 31 moves to be engaged with the power generating drive gear 20. Indicates the state just before. 7B is a state in which the inner protrusion 44da of the locking rod 44d has crossed the ridge 44bb of the rotor 44b. In this state, since the rotor 44b tries to go back to the original state by the force of the compression spring 44c, the inner protrusion 44da of the locking bar 44d snaps to the snap groove 44ba of the rotor 44b. Enter This state is the state of FIG. 7C. In the state of FIG. 7C, the counterclockwise rotation of the rotor 44b is stopped due to the locking jaw 44bd of the rotor 44b.

In this state, when the driver presses the pedal 5 to turn the crank 4 and the crankshaft 22, the drive gear 20 for power generation rotates and the pinion gear 31 rotates accordingly to generate power in the generator 30. This is done. By using this electricity can be used for headlights (3), front and rear axle apparatus and the like and the remaining spent electricity is stored in the capacitor (50).

When the driver stops the power generation action, when the knob 44bc of the rotor 44b is turned clockwise, the inner protrusion 44da and the movable table 42 of the locking bar 44d move slightly downward while the rotor ( After passing over the ridge 44bb of 44b) in a snap type, the spring 44b moves upward by elasticity to the compression spring 43 configured inside the fixing base 41. Since there is a small margin for gear engagement between the drive gear 20 and the pinion gear 31 for power generation, the rotor 44b moves slightly below the inner protrusion 44da of the engaging rod 44d due to this margin. It can snap over the ridge of 44bb.

Therefore, the generator 30 and the pinion gear 31 is moved upward so that the engaged state of the pinion gear 31 and the drive gear 20 for power generation rotates. In other words, the state is again shown in FIG. 7A.

In the bicycle generator of the present invention, since the pinion gear 31 of the generator 30 is generated by the rotational force of the drive gear 21 for power generation separately installed on the crankshaft 22 of the bicycle, there is no loss of rotational force and accordingly power generation efficiency. Can increase. And the power generation drive gear 20 is installed on the opposite side of the transmission gear portion 21 to balance the force applied to the left and right legs of the driver so as not to burden the legs.

In addition, the present invention does not cause abrasion to the tire of the front wheel (1) appearing in the generator using the conventional rotational force, and does not interfere with the driving because it does not apply the braking force directly to the front wheel (1).

When the generator 30 is installed on the bicycle, the electricity can be used in various ways as well as the headlamps 3. For example, it is possible to drive safely by installing a blinking light on the left and right, and also equipped with front and rear gaze devices to drive safely while watching the front and rear through the monitor while driving. In addition, navigation may be installed to determine the driving position of the child and to receive directions to the destination. In the case of a child, the driver may allow the parent to determine the position of the child.

While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

1: front wheel 2: rear wheel
3: headlight 4: crank
5: pedal
10: frame 20: drive gear for power generation
21: Transmission gear part 22: Crankshaft
23: cover 30: generator
31: Pinion Gear
40: generator mounting device 41: fixture
41a: T groove 41b: base
41c: Fastener 41d: Bolt
41e: Nut 41f, 41g: Concave space
42: mobile table 42a: T projection
42b: push rod 43: compression spring
44: engagement state release part 44a: rotation axis
44b: rotor
44ba: snap groove 44bb: ridge
44bc: handle 44bd: locking jaw
44c: compression spring 50: accumulator

Claims (3)

In the bicycle having the front wheel 1 and the rear wheel 2, respectively, in the front and rear of the frame 10,
Power generation drive gear 20, which is provided on the crank shaft 22 extending to the opposite side of the transmission gear portion 21 provided on the lower side of the center portion of the frame 10,
A pinion gear 31 meshed with the power generation drive gear 20 and the pinion gear 31 is selectively engaged with the power generation drive gear 20 to generate electricity; and
By installing the generator 30 to the frame 10, the generator mounting device 40 configured to selectively engage the pinion gear 31 of the generator 30 with the drive gear 20 for power generation if necessary. Bicycle power generation apparatus comprising a. According to claim 1, wherein the generator mounting device 40 is fixed to the frame 10, the support portion 41b is formed with a sliding T-groove 41a and a recessed space (41f) on the upper surface, and the support A holding unit 41 integrated with the unit 41b and made of a tightening unit 41c for tightening the frame 10; A movable table 42 having a T protrusion 42a slidably coupled to the T groove 41a of the support part 41b and having a generator 30 coupled to an upper surface thereof; Compression spring 43 is installed in the concave space (41f) formed on the upper surface of the fixing table 41 to apply elasticity to the moving table 42 to push the pinion gear 31 away from the power generating gear 20. And a pinion gear (31) of the generator (30) comprising a mating state maintaining release unit (44) for maintaining or releasing the state engaged with the power generating drive gear (20). According to claim 2, wherein the engagement state release portion 44 is rotatably installed around the rotation axis (44a) in the concave space (41g) formed on the side of the holder 41 and a snap groove ( 44ba, a ridge 44bb and a rotor 44b on which the locking jaw 44bd and the handle 44bc are formed, and a compression spring 44c for applying elasticity to the lower portion of the rotor 44b in a transverse direction. It is fixed to the side of the movable table 42 and extends toward the rotor 44b and contacts the side of the rotor 44b at its tip, and goes over the ridge 44bb of the rotor 44b when the state of engagement is maintained. Bicycle generating apparatus characterized in that it is composed of the engaging rod (44d) is formed with the inner protrusion 44da engaging the snap groove (44ba).

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