KR20240001473A - Water purifier - Google Patents

Abstract

An easily attachable and detachable electric drive device for a bicycle that can additionally provide rotational driving force using induced electromotive force is disclosed. An easily attachable and detachable electric drive device for a bicycle according to one aspect of the present invention includes a plurality of magnetic bodies that are fixed in close contact between the ends of spokes and the rim of a bicycle wheel and are radially arranged and rotate with the wheel; An electromagnet unit fixed to the frame of a bicycle so that the plurality of magnetic bodies face each other at a height through which they pass, and provided with a current to provide a repulsive or attractive force according to an induced electromotive force when the plurality of magnetic bodies come to adjacent positions; a control unit that determines and provides the intensity and direction of the current provided to the electromagnet unit; and a battery that supplies power to the electromagnet unit according to the control of the control unit.

Description

Electric drive device for bicycle that is easy to attach and detach {Water purifier}

The present invention relates to an electric drive device for a bicycle, and more specifically, to an easily attachable and detachable electric drive device for a bicycle that can additionally provide rotational driving force using induced electromotive force.

In general, a bicycle is a very friendly means of transportation that runs by driving the wheels using human muscle strength. These bicycles usually have two wheels, but the number of wheels may vary depending on the type of bicycle.

Recently, electric bicycles have been appearing due to the development of rechargeable secondary battery technology. An electric bicycle uses battery power to directly drive a motor connected to a drive shaft. In other words, when the motor is driven according to the user's selection using battery power, the wheels are directly driven by the rotational force of the motor.

The existing method of electric bicycles is a driving method in which the motor and battery are inserted or separated in the center of the fork of the rear wheel, and power is transmitted through a clutch combination. In this case, the entire wheel is replaced or a double sprocket and freehub are installed, so the price and functional aspects of power transmission are different. In other words, the pedal power is transmitted to the sprocket through the chain, and this power determines whether to supply power through the clutch of the ratchet such as the freehub, and through this, it is connected to the motor hub such as the satellite gear, clutch, and motor, which are electric motor modules, so it is a double part. This is consumed.

The central motor installation method operates on a similar principle, but has limitations in lower body weight, gear shifting, and clutch size.

On the other hand, there are some that use motors on the rear or front wheels to rotate the wheels using a contact roll or touch method, but they are vulnerable to impact due to tire wear and irregularities in the road surface, and the separation distance is not constant, which causes a lot of motor load and shortens battery life. It gets shorter. Hub-type motors have the problem of low efficiency because a person's weight is placed on the motor shaft, so the motor load is high. In addition, in addition to low power efficiency, there was a problem in that it had to be manufactured according to wheel size because there were maintenance difficulties (existing sprockets and freehubs).

In addition, the central hub motor will not produce torque and speed well if the gears are not shifted properly. Since the rod acts only on chain rotation, the efficiency is about twice as good as the hub-type motor method, but its appearance protrudes to the side compared to the existing model. These bicycles are expensive and have high efficiency and high specs.

In the torque sensor method, the motor operates according to the force of pedaling to achieve exercise effects, and the motor assists. This method detects the pressing force of the shaft supporting the crank arm, and the harder you press, the higher the torque reaches its maximum. Since it operates using torque when transmitting power when a small gear changes to a large gear, it may be difficult in inclined places, but no separate wiring is required.

The so-called PAS method links the number of speed sensor magnets with the rotation of the detection signal crank, and produces the same output with just one rotation. In other words, when the pedal rotates, the motor operates and less force is used. It is a sudden acceleration avoidance method that slowly increases speed after pedaling once. The PAS level is adjusted using the control button on the handlebar and the current speed and accumulated distance are displayed. In contrast, the throttle method operates the motor just by manipulating the handle, like a motor bike. Usually, it is a PAS-only model or is manufactured for both PAS and throttle use. As driving force increases, front and rear hydraulic disc brakes, spring suspension on the front wheels, and 9-speed gears on the rear wheels are often provided. When starting from a stop or rapidly accelerating after decelerating, the motor pushes, which has the effect of preventing injury to the knee joint. The motor's assistance prevents the vehicle from swaying at low speeds, increasing stability and reducing fatigue. In addition, it is helpful for long distance riding and repetitive short distance driving around town.

However, since the electric bicycles according to the prior art described above connect the motor to the wheel axis and directly drive or assist using the power of the battery, it is difficult to install them on existing bicycles, and there is a problem of having to purchase a new electric bicycle. .

The present invention is intended to solve the above problems, and the purpose of the present invention is to provide an electric drive device for a bicycle that is easy to attach and detach from an existing bicycle, so that even non-experts can purchase and install the product.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

According to one aspect of the present invention, a plurality of magnetic bodies are fixed to be in close contact between the ends of spokes of a bicycle wheel and the rim, and are radially arranged and rotated with the wheel; An electromagnet unit fixed to the frame of a bicycle so that the plurality of magnetic bodies face each other at a height through which they pass, and provided with a current to provide a repulsive or attractive force according to an induced electromotive force when the plurality of magnetic bodies come to adjacent positions; a control unit that determines and provides the intensity and direction of the current provided to the electromagnet unit; and a battery that supplies power to the electromagnet unit according to the control of the control unit. An electric drive device for a bicycle that is easily attachable and detachable is provided.

At this time, the plurality of magnetic materials may be assembled as a pair of magnetic materials facing each other with the spoke in between.

At this time, a passage groove may be formed in each of the pair of magnetic materials to allow the spoke to pass through.

At this time, the pair of magnetic materials can be assembled by fastening the pair of magnetic materials through the respective assembly holes formed while being in close contact with each other.

At this time, the electromagnet units may be installed and fixed as a pair on both sides of the wheel.

At this time, the electromagnet part may be formed in a bent form, and both polarities may be arranged in a direction perpendicular to the spoke.

According to another aspect of the invention, at least one pair of magnetic bodies fixed to the rotation axis of a bicycle wheel to face each other in a radial direction; The pair of magnetic bodies are located at a position where they can face each other at each height, and are arranged around the rotation axis on the frame of the bicycle, so that when the pair of magnetic bodies come to adjacent positions, they provide a repulsive force or an attractive force according to the induced electromotive force. An electromagnet unit provided with electric current; a control unit that determines and provides the intensity and direction of the current provided to the electromagnet unit; and a battery that supplies power to the electromagnet unit according to the control of the control unit. An electric drive device for a bicycle that is easily attachable and detachable is provided.

At this time, the pair of magnetic bodies may be arranged at an angle of 180 degrees and the six electromagnet units may be arranged at the same angle, or the pair of magnetic bodies may be arranged in four pairs and the electromagnet units may also be arranged at the same angle and number.

At this time, it may further include a position sensor fixed to one side of the bicycle frame so that the control unit can detect the position of the electromagnet unit and control the electromagnet unit according to the detected position information.

According to the above configuration, the easily attachable and detachable electric drive device for a bicycle according to the present invention can be easily attached and detached to an existing bicycle.

In addition, the easily attachable and detachable electric drive device for a bicycle according to the present invention is provided in a module form so that the bicycle owner can easily install and assemble it on the wheel, so it has excellent marketability.

The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

Figure 1 is a perspective view of a bicycle equipped with an easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention.
Figure 2 is a partial detailed view of a wheel on which an easily attachable and detachable electric drive device for a bicycle is installed according to an embodiment of the present invention.
Figure 3 is a front view of a magnetic material that is a component of an easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention.
Figure 4 is a plan view of a magnetic material that is a component of an easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention.
Figure 5 is a schematic diagram of a portion where a magnetic body and an electromagnet part, which are some components of an easily attachable and detachable electric drive device for a bicycle, are installed according to an embodiment of the present invention.
Figure 6 is a schematic diagram of another embodiment of the electromagnet shown in Figure 5.
Figure 7 is a side view of an easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention.
Figure 8 is a partial cross-sectional front view of an easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention.
Figure 9 is an external side view of an easily attachable and detachable electric drive device for a bicycle according to another embodiment of the present invention.
Figure 10 is a schematic diagram of the internal configuration of an easily attachable and detachable electric drive device for a bicycle according to another embodiment of the present invention.
Figures 11 and 12 are schematic diagrams showing two other examples of a magnetic body and an electromagnet part, which are some components of an easily attachable and detachable electric drive device for a bicycle according to another embodiment of the present invention.
Figures 13 and 14 are circuit diagrams applicable to the easily attachable and detachable electric drive device for a bicycle according to the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention, parts not related to the description have been omitted in the drawings, and identical or similar components are given the same reference numerals throughout the specification.

The words and terms used in this specification and claims are not to be construed as limited in their usual or dictionary meanings, but according to the principle that the inventor can define terms and concepts in order to explain his or her invention in the best way. It must be interpreted with meaning and concepts consistent with technical ideas.

Therefore, the embodiments described in this specification and the configuration shown in the drawings correspond to a preferred embodiment of the present invention, and do not represent the entire technical idea of the present invention, so the configuration may be replaced by various alternatives at the time of filing of the present invention. There may be equivalents and variations.

In this specification, terms such as “comprise” or “have” are intended to describe the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to describe the presence of one or more other features. It should be understood that it does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

A component being “in front,” “rear,” “above,” or “below” another component means that it is in direct contact with the other component, unless there are special circumstances. This includes not only those placed at the “bottom” but also cases where another component is placed in the middle. In addition, the fact that a component is "connected" to another component includes not only being directly connected to each other, but also indirectly connected to each other, unless there are special circumstances.

Hereinafter, an easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention will be described with reference to the drawings.

First, referring to Figure 1, the positions (A, B) where the easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention are installed on the bicycle (1) are shown. It is installed on the frame 30 of the front wheel 10 and the rear wheel 20, and may be installed near the rim 22 that supports the tire 21 of the wheel. In another embodiment described later, it may be installed in the center of the wheel depending on selection.

Referring to FIGS. 1 to 8, the easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention includes a plurality of magnetic materials 51, an electromagnet portion 60, a control portion 80, and a battery 70. may include.

Referring to FIGS. 1 to 8, the plurality of magnetic bodies 51 are fixed to be in close contact between the end of the spoke 23 and the rim 22 of a bicycle wheel, and are radially arranged so that they can rotate together with the wheel. . Here, a plurality of magnetic substances 51 may be arranged radially at regular intervals, and the number of the plurality of magnetic substances 51 disposed at this time may vary depending on the design.

At this time, a pair of the plurality of magnetic materials 51 may be assembled in a direction facing each other with the spoke 23 in between. By being assembled on both sides with the spokes 23 in this way, installation on an existing bicycle 1 can be made very easily.

At this time, a passage groove 51b may be formed in each of the pair of magnetic materials 51 to allow the spoke 51 to pass through. Here, two spokes 23 are assembled so that they can pass through. One or more spokes 23 can be assembled so that they can pass through, and the number of passing spokes can be designed in various ways considering the size and length of the magnetic material.

At this time, the pair of magnetic materials 51 can be assembled by passing the fastening member 51c through the respective assembly holes 51a while being in close contact with each other. Since a pair of magnetic materials 51 are assembled while avoiding interference with the existing spokes 23, a structure that can be easily attached and detached to existing general bicycles is provided.

Referring to FIGS. 5 to 8, the electromagnet unit 60 is fixed to the frame 30 of the bicycle 1 so that the plurality of magnetic materials 51 face each other at a height through which the plurality of magnetic materials 51 pass. When the two magnetic bodies 51 come to adjacent positions, current may be provided to provide repulsion or attraction according to the induced electromotive force.

At this time, the electromagnet unit 60 may be installed and fixed as a pair on both sides of the wheel. The electromagnet unit 60 may be installed on only one side, but it is preferable to install it on both sides of the wheel to maximize balance and the magnetic force provided.

At this time, referring to Figures 13 and 14, circuit diagrams applicable to the present invention are shown. Of course, it is not limited to these circuits.

Meanwhile, another embodiment of the electromagnet part, which is a component of an easily attachable and detachable electric drive device for a bicycle according to an embodiment of the present invention, is shown in FIG. 6. As shown, the electromagnet portion 161 is formed in a bent shape and both polarities may be arranged in a direction perpendicular to the spokes 23. Therefore, the force generated by the induced electromotive force can be transmitted more efficiently by acting as a repulsive force on one side and an attractive force on the other side. In other words, since double power can be applied, the amount of torque provided increases. Of course, in this case, the direction of the current is reversed and the polarity is controlled to be reversed. The electromagnet unit 161 is installed on only one side, and the coil 162 is wound between insulating paper around the ferrite core 136 and wrapped in the case 164.

Referring to FIGS. 7 and 8, the control unit 80 can determine and provide the intensity and direction of the current provided to the electromagnet unit 60.

At this time, the present invention is a position sensor fixed to one side of the bicycle frame 30 so that the control unit 80 can detect the position of the electromagnet unit 60 and control the electromagnet unit 60 according to the detected position information. (65) may be further included. Here, it can be provided as a Hall sensor. The control unit 80 determines the exact position of the magnetic material 51 using the position sensor 65, and based on this, controls and supplies current to the electromagnet unit 60 to accurately and efficiently convert electrical energy into force energy. It can be transmitted to the rotational driving force of the wheel.

The battery 70 can supply power to the electromagnet unit 60 under the control of the control unit 80.

At this time, the battery 70 may be a lithium ion battery, a rechargeable secondary battery that has been widely used in recent years. Therefore, users can charge it and then use it, then recharge it before it is discharged and continue using it.

Referring to FIG. 2, an example in which a magnetic material 60 is installed on a wheel is shown. A magnetic material 51 is installed in close contact with the inside of the rim 22 that supports the tire 21 of the wheel. The number of these magnetic substances 51 can be changed by adjusting the angle at which they are installed radially according to the design.

Referring to FIGS. 3 and 4, a pair of magnetic materials 51 may be in close contact with each other from the side of the wheel, then penetrate each fastening hole 51a and be fastened by a fastening means 51c, and be connected to the spoke 23. As described above, the groove 51b is formed to avoid interference.

Referring to FIG. 5, the relationship between the magnetic material 51 and the electromagnet unit 60 is schematically shown. Electromagnet parts 60 are installed adjacent to the magnetic body 51 installed on the wheel on both sides. The electromagnet unit 60 has an insulating paper 62 or an insulating sheet wrapped around a ferrite core 61, and a coil 63 is wound on it. Insulating paper 62 is again wound around the outer surface of the coil 63, and the outer surface is packaged with a plastic case 64. In this state, when current is supplied according to a signal from the control unit 80, the electromagnet unit 60 assists the rotational torque by magnetic force with the magnetic body 60 passing adjacent to it. In addition, a Hall sensor 65 is installed on one side of the frame 30 where the electromagnet unit 60 is installed to accurately detect the position of the moving magnetic body, and accordingly the control unit 80 supplies current to the electromagnet unit at the most efficient timing. 60).

Referring to Figures 7 and 8, the electromagnet unit 60, control unit 80, and battery 70 can be seen in an installed state. The battery 70 and the control unit 80 are supported by the bicycle frame 30, and the PCB, which is the battery 70 and the control unit 80, is protected by a plastic case or the like in the frame 30. The battery 70 is located on the upper side, which can of course be changed to another part. The control unit 80 at the bottom can also be installed elsewhere. The electromagnet unit 60 is installed to be supported by the frame 30, extends to both sides of the wheel, and is then installed to be supported at a portion adjacent to the lower part of the rim 22 of the wheel. Therefore, when the wheel rotates, each magnetic material 51 will pass between the electromagnet parts 60. At this time, the control unit 80 will determine the position of each magnetic material 51 and appropriately control the current supplied to the electromagnet unit 60. At this time, the flow of current supplied to the magnetic material 51 will change depending on the speed at which the wheel rotates, and the induced electromotive force induced between the electromagnet portion 60 and the magnetic material 51 helps actually drive the bicycle. In other words, it does not drive the bicycle, but as the wheel rotates, the induced electromotive force can be added to the rotational driving force of the wheel.

Meanwhile, referring to FIGS. 9 to 12, an easily attachable and detachable electric drive device for a bicycle according to another embodiment of the present invention is shown.

An easily attachable and detachable electric drive device for a bicycle according to another embodiment of the present invention includes at least one pair of magnetic materials 122 fixed to the rotation axis of a bicycle wheel to face each other in a radial direction, and the pair of magnetic materials 122. are located at a position where they can face each other at each height, and are arranged around the rotation axis on the frame of the bicycle, and when the pair of magnetic bodies 122 come to adjacent positions, a current is generated to provide repulsion or attraction according to the induced electromotive force. It may include a provided electromagnet unit 123, a control unit that determines and provides the intensity and direction of the current provided to the electromagnet unit 123, and a battery that supplies power to the electromagnet unit according to the control of the control unit. there is.

An easily attachable and detachable electric drive device for a bicycle according to another embodiment of the present invention can be installed near the rotation axis of a bicycle wheel. In other words, it is possible to provide a product that can be easily attached and detached to a bicycle wheel where a so-called sprocket or clutch hub is located.

Referring to Figures 9 and 10, the existing sprocket 110 and hub free wheel can be easily mounted on the outer surface of the free wheel in the form of an insertable module 120. In other words, it can be modularized so that it can be very easily mounted on an existing bicycle. The magnetic material 122 may be mounted radially on the outer surface of the free wheel 121, and the coil 123 may be arranged with a space on the outer surface of the magnetic material 122. Battery power may be supplied to the coil 123 according to the rotation of the wheel by the control unit. This method operates on the same principle as the above-described embodiment.

Referring to Figure 11, the installation near the central rotation axis of the wheel is the same and specifically shows two-pole rotation. A pair of magnetic materials 122 are arranged at an angle of 180 degrees on the outer surface of the existing hub free wheel 121, and six electromagnet parts 123 are arranged at the same angle with a space adjacent to them. Therefore, when the wheel rotates, the magnetic material 122 rotates, and the control unit will control the battery power supply accordingly. The principle is the same as the above-described embodiments. Making a ferrite core, covering it with insulating paper, and winding the coil 123a is the same as the existing electromagnet manufacturing method.

Referring to FIG. 12, four pairs of magnetic materials 222 are arranged on the outer surface of the existing hub free wheel 221, and the electromagnet parts 223 may also be arranged at the same angle and number. Of course, it will be controlled by the same principle as in Figure 11, and it will assist in the rotational power.

Here, the electric drive device shown in FIGS. 10 to 12 has excellent attachability and detachability because the user can easily assemble the product in the form of a module 120 near the existing free wheel. At this time, the control unit and the battery can be installed to be supported on the frame, which is the same as the above-described embodiments.

Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention can add or change components within the scope of the same spirit. , deletion, addition, etc., other embodiments can be easily proposed, but this will also be said to fall within the scope of the present invention.

1: bicycle
10, 20 wheels 21: wheels
22: Rim 23: Spoke
30: Frame 51, 122, 222: Magnetic material
60, 123, 223: electromagnet part 70: battery
80: control unit

Claims (9)

a plurality of magnetic bodies fixed in close contact between the ends of spokes of a bicycle wheel and the rim, and disposed radially and rotating together with the wheel;
An electromagnet unit fixed to the frame of a bicycle so that the plurality of magnetic bodies face each other at a height through which they pass, and provided with a current to provide a repulsive or attractive force according to an induced electromotive force when the plurality of magnetic bodies come to adjacent positions;
a control unit that determines and provides the intensity and direction of the current provided to the electromagnet unit; and
An electric drive device for a bicycle that is easily attachable and detachable, including a battery that supplies power to the electromagnet unit according to the control of the control unit. According to claim 1,
An electric drive device for a bicycle that is easily attachable and detachable, wherein the plurality of magnetic materials are assembled in a direction facing each other with the spoke in between. According to clause 2,
An electric drive device for a bicycle that is easily attached and detachable, in which a passage groove is formed in each of the pair of magnetic materials to allow a spoke to pass through. According to clause 2,
An electric drive device for a bicycle that is easily attached and detachable, in which the pair of magnetic materials are assembled by fastening a fastening member through each formed assembly hole while being in close contact with each other. According to claim 1,
The electromagnet unit is installed and fixed as a pair on both sides of the wheel, and is an easily attachable and detachable electric drive device for a bicycle. According to claim 1,
An electric drive device for a bicycle that is easily attached and detachable, wherein the electromagnet part is made in a bent shape and both polarities are arranged in a direction perpendicular to the spoke. At least one pair of magnetic bodies fixed to the rotation axis of a bicycle wheel to face each other in a radial direction;
The pair of magnetic bodies are located at a position where they can face each other at each height, and are arranged around the rotation axis on the frame of the bicycle, so that when the pair of magnetic bodies come to adjacent positions, they provide a repulsive force or an attractive force according to the induced electromotive force. An electromagnet unit provided with electric current;
a control unit that determines and provides the intensity and direction of the current provided to the electromagnet unit; and
An electric drive device for a bicycle that is easily attachable and detachable, including a battery that supplies power to the electromagnet unit according to the control of the control unit. According to clause 7,
A bicycle in which the pair of magnetic bodies are arranged at an angle of 180 degrees and six electromagnet units are arranged at the same angle, or the pair of magnetic bodies are arranged in four pairs and the electromagnet units are also arranged at the same angle and number, and are easily attached and detachable. Electric drive device for use. According to claim 1 or 7,
An electric drive device for a bicycle that is easily attached and detachable, further comprising a position sensor fixed to one side of the bicycle frame so that the control unit can detect the position of the electromagnet unit and control the electromagnet unit according to the detected position information.

Images