KR101935276B1 - Electric bicycle retrofit kit - Google Patents

Abstract

The present invention relates to an electric bicycle conversion kit, which is mounted on a general bicycle to be possible to be converted to an electric bicycle, and more specifically, to an electric bicycle conversion kit, capable of increasing generation efficiency. To this end, according to the present invention, the electric bicycle conversion kit includes: a wheel having a hollow portion; a housing having a wheel axis, a support means, and a motor mounting portion; an electric motor including a stator and a rotor and capable of self-generation; and a battery embedded in the housing.

Description

[0001] ELECTRIC BICYCLE RETROFIT KIT [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric bicycle retrofit kit that can be mounted on a general bicycle and can be retrofitted into an electric bicycle. More particularly, the present invention relates to an electric bicycle retrofit kit including an electric motor, a battery, a controller, a headlight, It is very easy and quick to modify the electric bicycle by replacing the ordinary wheel with the housing with the built-in parts. Therefore, it is possible to carry the magnetic force by transmitting the rotational force of the rotor due to the pedal rolling and motor driving to the wheels, A motorized bicycle that can increase the power generation efficiency by regenerating kinetic energy to electric energy by increasing the number of revolutions of the rotor per unit rotation of the wheel, And a modification kit.

Recently, more and more users are using various types of mobile devices for the purpose of reducing transportation costs, exercising for health, leisure and play.

Typical examples include a general two-wheel or three-wheel bicycle using a pedal, an electric bicycle using a motor, and an electric kick board.

A bicycle using a dual motor means that the front wheel or the rear wheel is rotated by using a motor independently of the pedal cloud, so that the occupant can travel by ascending the ascent or traveling with a long distance.

However, a general electric bicycle has a disadvantage in that it can not travel for a long time due to a large amount of battery usage required for the motor operation. There is an electric bicycle in which the motor is rotated by self-power generation when the motor runs through the pedal cloud.

In such a conventional electric bicycle, a chain or a belt is connected to a gear of a rear wheel hub in a central motor coupled to rotate with the crank. The electric bicycle having such a structure is only charged when the occupant rolls the self- When the pedal is not rolled, such as inertia or a downhill running, the motor can not be rotated and the battery is not charged. In addition, the battery has a great deal of power for charging the battery, and the charging efficiency is also very low.

On the other hand, there are more and more cases of converting a conventional bicycle driven by a pedal to a motor-driven electric bicycle.

This is because the assembly structure or position of various components (motor, battery, controller, accelerator lever, etc.) for electric driving is made uniform in the case of a mass-produced electric bicycle manufactured by the manufacturer, So that they can adapt to their own taste.

However, in the case of a general passenger who is not an expert, it is difficult to purchase and reassemble parts necessary for electric drive separately.

Accordingly, various electric bicycle modification kits are being developed and put on the market, so that the general passenger can modularize the electric bike easily at low cost by modularizing the related parts.

However, as can be seen in the registered patent 10-0848138, the published patent application 10-2012-0020728, the published utility model 20-2010-0003389, and the registered patent 10-1249809,

Conventional electric bicycle retrofitting kits have the problem of hindering the unique design of existing bicycles because the related parts such as the body frame and the backrest of the existing bicycle are individually attached or the existing bicycle parts are replaced.

In addition, there are some products sold by integrating electric driving parts into a bicycle wheel for convenience of modification. However, such a conventional electric bicycle retrofit kit uses electric energy charged in the battery to assist the attraction force by the motor, There is no energy regeneration and self-charging system, battery capacity is small, and the travel distance is short.

Further, there is an inconvenience that accessory parts such as headlights, tail lights, and horns must be separately mounted and reinstalled.

In particular, conventional conventional bicycles have various types and specifications of wheels according to their specifications. Conventional electric bicycle modification kits require individual modification kits for each wheel, which makes it difficult to manufacture, .

Accordingly, the present invention has been made to solve the above-mentioned problems,

The integrated parts of the wheels mounted on the vehicle body, such as battery, self-charging electric motor, headlight, taillight, and horn, are integrated with each other. And an object thereof is to provide an electric bicycle retrofitting kit that can easily and quickly perform a retrofitting operation.

In addition, since the present invention is equipped with an energy recovery and self-charging system, it is possible to carry out long-distance travel conveniently without recharging, and it is possible to produce a modification kit only by changing wheels of different size wheels, And an object of the present invention is to provide an electric bicycle retrofit kit capable of ensuring ease of manufacture through unitization of a production line and reducing manufacturing cost.

In order to achieve the above object, an electric bicycle retrofit kit according to the present invention comprises:

An electric bicycle retrofit kit which can be mounted on a general bicycle and can be retrofitted with an electric bicycle,

A wheel having a hollow portion without a spoke inside the wheel;

A wheel shaft coupled to the wheel frame of the vehicle body to be fixed to the hollow portion; support means for supporting the inner circumferential surface of the wheel so that the wheel rotates about the wheel shaft; and a motor mounting portion on one side of the wheel shaft;

A stator coupled to be fixed to the motor mounting portion; and a rotor rotatably provided around the stator and contacting the inner circumferential surface of the wheel, wherein the magnetic force of the rotor due to power supply and the rotational force of the rotor An electric motor capable of self-generation by the electric motor; And

And a battery built in the housing and electrically connected to the electric motor to supply electric power necessary for driving the motor and to charge the electric power by motor power.

In the electric bicycle modification kit according to the present invention,

The supporting means is composed of a plurality of supporting rollers which are provided in a circumferential direction of the housing so as to be freely rotated while contacting the inner circumferential surface of the wheel of the wheel.

Further, in the electric bicycle modification kit according to the present invention,

Wherein the housing includes a receiving portion formed in a structure recessed inward,

Wherein the support means includes a roller bracket that is rotatably coupled to the support roller in such a manner that the support roller is rotatably coupled to the inside and outside of the accommodating portion, And a spring that is extrinsic to the fixing bolt and elastically supports the roller bracket outwardly.

Further, in the electric bicycle modification kit according to the present invention,

Wherein the housing includes a shaft hole formed through the left and right sides and having a plurality of fitting grooves formed at an angle along an inner peripheral surface thereof,

And the wheel shaft is coupled through the shaft hole and has a fitting protrusion that is coupled to the wheel frame at both ends, and a rod portion that protrudes from one side of the rod portion to have a larger diameter than the rod portion, And a fixing head having a fixing protrusion for fixing the fixing protrusion.

An electric bicycle retrofitting kit according to the present invention comprises:

Batteries, self-charging electric motors, controllers, headlights, taillights, horns, and other related components are integrated into the wheels of wheels with no spokes, so you can easily replace the wheels on your existing bike It is very convenient to renovate,

It is equipped with energy recovery and self-charging system using self-charging electric motor, making it possible to travel long distance conveniently without recharging,

It is possible to replace and replace only the wheel wheels of different sizes, so that the modification kit of the present invention can be easily installed and modified in almost all kinds of existing bicycles, thereby being excellent in versatility and securing ease of manufacture through unification of production lines And the manufacturing cost is reduced,

In the case of self-charging, the number of revolutions of the electric motor is increased per unit revolution of the wheel, and battery charging is performed not only by the magnetic force running by the pedal cloud but also by the inertia or the downhill running, There is an effect that the use time can be increased.

FIGS. 1A and 1B are front and rear perspective views of an electric bicycle modification kit according to the present invention. FIG.
Fig. 2 is a right side view of the electric bicycle modification kit according to the present invention, omitting the right cover. Fig.
3 is an exploded perspective view of the electric bicycle modification kit according to the present invention.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

 In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first to second aspects described in the present specification are merely referred to in order to distinguish between different components and are not limited to the order in which they are manufactured, It may not match.

In describing the electric bicycle retrofit kit according to the present invention, when an unambiguous approximate direction reference is specified with reference to FIG. 1 for the sake of convenience, the direction in which the gravity acts on the basis of the front view provided with the headlight (FL) Downward, leftward, and rightward as viewed in the downward direction, and directions are specified in accordance with this standard unless otherwise specified in the detailed description and claims of the invention relating to other drawings.

Hereinafter, an electric bicycle modification kit according to the present invention will be described with reference to the accompanying drawings.

The present invention relates to an electric bicycle retrofit kit that can be replaced with an electric bicycle by replacing and attaching only ordinary wheels provided in a conventional bicycle, and as shown in FIGS. 1A to 3, includes a wheel W, a housing H ), An electric motor (60), and a battery (B).

In this specification, an embodiment in which the modification kit of the present invention is replaced and mounted on a front wheel (front wheel) of a bicycle is described as a representative example of a two-wheeled bicycle driven by a rear wheel connected to a pedal, but the present invention is not limited thereto.

The wheel W is mounted on the outer peripheral surface of the wheel 10 like a conventional bicycle. However, in the case of a normal wheel, a hub is connected to the inner side of the wheel. However, Is characterized in that a hollow portion 11 having no spokes is formed inside the wheel 10.

The housing H includes a wheel shaft 20 coupled to a wheel frame of a vehicle body (not shown) to be fixed to the hollow portion 11, a wheel shaft 20 rotatable about the wheel shaft 20, (50) for supporting the inner peripheral surface of the wheel shaft (10), and a motor mounting portion (41a) on one side of the wheel shaft (20).

Specifically, the housing H is composed of an inner body 30 and both side plates 40A and 40B coupled to both sides of the inner body 30.

The inner body 30 includes upper and lower frames 31 and 32 and front and lower frames 33 and 35 and rear and lower frames 34 and 36 in a substantially pentagonal shape A controller C for controlling the electric bicycle is mounted on the inner surface of the upper frame 31 and a battery B is mounted on the inner surface of the lower frame 32 LED light sources used as a headlight (FL) and a tail light (BL) are mounted on the front upper frame (35) and the rear upper frame (36) A support roller 51 and a charging module CM and a horn (K, Clarkson) functioning as means 50 are mounted.

Particularly, the front and rear upper frames 35 and 36 have receiving portions 35a and 36a recessed inwardly so that the receiving portions 35a and 36a are provided with rollers The bracket 52 is fitted and engaged.

The motor cover 41 which forms the motor mounting portion 41a is engaged with the lower side plates 40A and 40B in an inverted triangular shape and a part of the lower side of the motor cover 41 is opened And a shaft hole 42 formed at the center of the first and second side plates 40A and 40B so as to penetrate the left and right sides of the wheel shaft 20 in order to engage with the wheel shaft 20 is provided.

Particularly, the shaft hole 42 (more precisely, any one of the shaft holes 42 of the both side plates 40A and 40B, the shaft hole 42 provided in the second side plate 40B in the figure) Fitting grooves 42a are formed at an angle.

Here, the fitting groove 42a is formed to be angled, as a general concept that the wheel shaft 20 coupled to the shaft hole 42 has a non-circular inner circumferential surface so as to be fixed without rotating, 42a are arranged in the circumferential direction, alternatively, the fitting grooves 42a may be rectangular, or the shaft hole 42 itself may be formed in a polygonal shape of hexagonal or octagonal shape rather than circular shape It is possible.

A connection socket CS for electrically connecting the controller C to the control unit provided on the handle or the like of the vehicle body and a switch S for power on / off are provided on the first side plate 40A or the second side plate 40B And is exposed to the outside.

The wheel shaft 20 is for mounting the modification kit of the present invention on the wheel frame of the vehicle body and includes a shaft 21a, And a fixing protrusion 22a protruding from one side of the rod portion 21 to have a larger diameter than the rod portion 21 and corresponding to the fitting groove 42a on an inner side surface thereof 22).

The fitting protrusions 21a protrude in a rectangular shape corresponding to the forks provided in the wheel frames. Since the direction of the forks is different for each bicycle, the fitting protrusions 21a are inserted through the fitting protrusions 22a through the fitting grooves 42a and the fixing protrusions 22a 21a can be changed and installed.

That is, when the wheel shaft 20 is fitted into the shaft hole 42, the direction of the fork and the direction of the fitting projection 21a are changed so as to change the angle so that the fixing projection 22a is fitted into the fitting groove 42a, 22 is hung on the second side plate 40B to complete the mounting. At this time, the wheel shaft 20 is fixed without rotating in the wheel frame.

The wheel shaft 20 has a QR lever 23 coupled through the rod portion 21 and coupled to and separated from the wheel frame through tightening or loosening of the QR lever 23. The wheel shaft 20 has a bolt- Can be changed.

The support means 50 includes a plurality of support rollers 51 which are provided in the circumferential direction of the housing H and are coupled to the inner circumferential surface of the wheel W of the wheel W so as to rotate freely.

Specifically, the support means 50 includes a roller bracket 52 mounted on the inside and outside of the accommodating portions 35a and 36a so as to be capable of moving back and forth and the support roller 51 being axially installed and rotatably engaged, A support block 53 which is fixedly coupled to the both side plates 40A and 40B in the accommodating portions 35a and 36a and a fixing bolt 52 which penetrates the support block 53 and is coupled to the roller bracket 52. [ And a spring 55 extruded to the fixing bolt 54 and elastically supporting the roller bracket 52 outwardly (in the direction of the wheel 10).

The elastic force of the spring 55 is adjusted according to the degree of tightening of the fixing bolt 54 while the supporting roller 51 is elastically supported outwardly by the roller bracket 52, It is possible to adjust the contact force between the support roller 51 and the wheel 10 and to change the position of the support block 53 fixed on the accommodating portions 35a and 36a to different positions in accordance with the diameter of the wheel 10 The position of the support roller 51 can be changed, and the wheel W having a different size can be mounted and manufactured through the replacement of the wheel 10. [

The support means 50 includes a guide projection 56 protruding from both sides of the roller bracket 52 as a rotation axis of the support roller 51. The first and second side plates 40A, Is provided with a guide groove 43 in which the guide projection 56 is slidably engaged with the upper corner portion to guide the inner and outer position adjustment of the support means 50 and the forward and backward movement of the support roller 51. [

In addition, the first side plate 40A or the second side plate 40B is provided with a detachable opening 44 for exchanging the battery B through both sides, and the outer side of the side plate is provided with a detachable opening / The battery cover 45 is detachably coupled.

The electric motor 60 rotates the wheel W rotatably coupled to the outside of the housing H by the support means 50 to provide the necessary power for traveling, The battery B is charged with power by self-power generation by receiving kinetic energy,

A stator 61 coupled to be fixed to the motor mounting portion 41a and a rotor 62 rotatably provided around the stator 61 and contacting the inner circumferential surface of the wheel 10 of the wheel W, So that self-power generation by the magnetic force rotation of the rotor 62 by the power supply and the rotation of the torque of the rotor 62 is possible.

Specifically, the stator 61 is fixed to the both side plates 40A and 40B such that the fixed shaft 61a protruding from the left and right sides is not coupled to the side plates 40A and 40B. The rotor 62 penetrates both sides A stator inserting portion is formed and is coupled to rotate about the stator 61 in a state where the stator 61 is inserted into the inserting portion.

The electric motor 60 is electrically connected to the battery B through the charging module CM and the stator 61 and the rotor 62 are formed of a conductor wound with a current flowing therethrough and a permanent magnet A magnet such as an electromagnet is built in. When power is supplied from the battery B, the rotor 62 rotates to rotate the wheel 10 in contact with the outer circumferential surface to enable running using the motor, When the rotor 62 is rotated by the rotation of the wheel W in the state where the battery W is rotated, the battery B is charged after voltage is rectified in the charging module CM by self-power generation.

The electric motor 60 includes a rotor cap 63 having a shaft hole through which the fixed shaft 61a passes and being coupled to both sides of the rotor 62 to rotate together with the rotor 62, And a bearing 64 mounted between the rotor 62 and the fixed shaft 61a in the shaft hole.

The rotor cap 63 is coupled to both sides of the rotor 62 so that the inner space of the rotor cap 63 forms a stator insertion portion.

The bearing 64 is fitted to the outer circumferential surface of the fixed shaft 61a and supports the rotor 62 rotated by the power supply or the wheel W. [

Next, the battery B is housed in the housing H, and is electrically connected to the electric motor 60 to supply electric power for driving the motor and to charge the electric power by motor power. (32) of the housing (30), and is replaceably provided in the housing (H) through a battery cover (45).

The battery B is electrically connected to the controller C, the electric motor 60, the headlight FL, the tail lamp BL and the horn K to supply the necessary power in the normal running mode, Charging is performed by the electric motor (60).

Hereinafter, the operation of the electric bicycle using the modification kit having the above-described configuration will be described in detail.

First, when the passenger does not supply electric power to the electric motor 60 but travels by pedaling only, the wheel W (front wheel) rotates clockwise to drive the bicycle forward.

Next, when the passenger turns on the electric motor 60 by supplying electric power to the electric motor 60, the wheel W rotates in the clockwise direction by the rotation of the rotor 62 in the stopped state without pedaling, and the forward travel is performed .

At this time, when the rotational output of the electric motor 60 is set to a low output, the rotational force of the wheel W by the electric motor 60 assists the rotation of the rear wheel due to the pedaling, have.

On the other hand, in the battery B charging mode, the rotor 62 of the electric motor 60 is not rotated by the power supply but is rotated by the wheel 10 of the wheel W, The battery B is charged with power.

That is, when the bicycle is driven by pedaling in the battery B charging mode, the rotor 62 rotates together with the wheel 10 of the rotating wheel W to perform self-power generation. At this time, The self-power generation is performed while the rotor 62 continues to be rotated by the wheels W even when driving by inertia or downhill rather than by pedaling, thereby remarkably improving power charging efficiency.

Particularly, according to the present invention, when the wheel W rotates by a force in the battery B charging mode, the rotor 62 rotates several times during one rotation of the wheel W, so that the energy recovery and self- There is a very high advantage.

The present invention having such a configuration is convenient because it is possible to complete the modification to the electric bicycle by simply removing the front wheel from the existing general bicycle and then replacing the modified kit with the vehicle body using the QR lever 23, Since only front wheels are replaced, parts for electric driving and rear lights (BL), controller (C), and horn (L) that require power supply are not incidentally coupled to the body of the existing bicycle Does not hinder the design aesthetic sense of.

In addition, it is possible to manufacture the bicycle by replacing only the wheels 10 of the different size wheels by adjusting the position of the support means 50, And is excellent in versatility.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the invention is not limited thereto. Various modifications, alterations, and substitutions are possible within the scope of the present invention. Should be interpreted as belonging to.

W: Wheel H: Housing
B: Battery C: Controller
CM: Charging module K: Horn
FL: Headlight BL: Tail light
CS: Connection socket S: Switch
10: Wheel 11: Wheel
11: hollow part 20: wheel shaft
21: rod portion 21a: fitting projection
22: Fixing head 22a: Fixing projection
23: QR lever 30: inner body
31 to 36: Frame 35a, 36a:
40A, 40B: side plate 41: motor cover
42: shaft hole 42a: fitting groove
43: guide groove 44:
44: battery cover 50: support means
51: support roller 52: roller bracket
53: Support plate 54: Fixing bolt
55: spring 56: guide projection
60: electric motor 61: stator
61a: fixed shaft 62: rotor
63: rotor cap 64: bearing

Claims (4)

An electric bicycle retrofit kit which can be mounted on a general bicycle and can be retrofitted with an electric bicycle,
A wheel having a hollow portion without a spoke inside the wheel;
A wheel shaft coupled to the wheel frame of the vehicle body to be fixed to the hollow portion; support means for supporting the inner circumferential surface of the wheel so that the wheel rotates about the wheel shaft; and a motor mounting portion on one side of the wheel shaft;
A stator coupled to be fixed to the motor mounting portion; and a rotor rotatably provided around the stator and contacting the inner circumferential surface of the wheel, wherein the magnetic force of the rotor due to power supply and the rotational force of the rotor An electric motor capable of self-generation by the electric motor; And
And a battery that is built in the housing and is electrically connected to the electric motor to supply electric power necessary for driving the motor and to charge the electric power by motor power,

Wherein the housing includes a shaft hole formed through the left and right sides and having a plurality of fitting grooves formed at an angle along an inner peripheral surface thereof,
And the wheel shaft is coupled through the shaft hole and has a fitting protrusion that is coupled to the wheel frame at both ends of the rod shaft. The rod portion is protruded from one side of the rod portion to have a larger diameter than the rod portion, And a stationary head having a fixing protrusion for fixing the stationary protrusion.
The method according to claim 1,
Wherein the support means comprises a plurality of support rollers provided in a circumferential direction of the housing and coupled to rotate freely while contacting the inner circumferential surface of the wheel of the wheel.
3. The method of claim 2,
Wherein the housing includes a receiving portion formed in a structure recessed inward,
Wherein the support means includes a roller bracket that is rotatably coupled to the support roller in such a manner that the support roller is rotatably coupled to the inside and outside of the accommodating portion, And a spring for externally pushing the roller bracket outwardly to the fixing bolt so as to elastically support the roller bracket.
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