KR102146749B1 - Conversion kit for electric scooter and electric bicycle - Google Patents

Abstract

The present invention relates to a transformation kit for an electric scooter and an electric bicycle, which allows a user to use an electric scooter or an electric bicycle depending on the purpose of use. To this end, one embodiment of the present invention comprises: an electric scooter having an electric motor to be operated by electric power, of which one area at a lower frame has a crankshaft inserted into an extension unit extended towards the ground surface in a direction vertically corresponding to the lower frame; and a transformation kit which is assembled with the crankshaft provided at the electric scooter to transform the electric scooter into an electric bicycle. Here, the transformation kit is characterized by comprising: a crank of which a hollow central portion is coupled to one end portion of the crankshaft, and which has a chain ring of a gear tooth at an adjacent surface coupled to the crankshaft; a crank arm which includes a first crank arm installed on the outside of the crank and a second crank arm installed at the other end portion of the crankshaft, and is provided to be monolithically rotated along with the crankshaft and the chain ring; and a chain which is wound around a sprocket and a chain ring provided at a rear wheel of the electric scooter to connect the sprocket to the chain ring, thereby allowing driving power generated by the electric motor to be delivered to the rear wheel.

Description

Conversion kit for electric scooters and electric bicycles {CONVERSION KIT FOR ELECTRIC SCOOTER AND ELECTRIC BICYCLE}

The present invention relates to a conversion kit between an electric scooter and an electric bicycle, and specifically, by assembling and installing a conversion kit including a drive system part of the electric bicycle in one area of the electric scooter, and according to the purpose of use of the user, the electric scooter or electric bicycle It relates to a conversion kit for electric scooters and electric bicycles that can be converted to and used.

Smart Mobility refers to a small personal means of transportation that combines cutting-edge charging and power technologies. Such smart mobility is also referred to as personal mobility because it uses eco-friendly fuels such as electricity or is concentrated on small personal mobility with a concept of one or two passengers.

The above-described smart mobility is convenient to carry and does not generate exhaust gas, so it is eco-friendly and can be driven easily, attracting attention as a next-generation means of transportation. As an example of such a next-generation means of transportation, Korean Patent Registration No. 10-1359339 An electric bicycle including a main battery, an electric motor, an electronic control unit, and a connector by generating electric energy when the pedal is rotated, or an electric scooter driven with an electric drive system in Korean Patent No. 10-0858779 is an example Can be lifted.

However, the above-described prior art disclosed smart mobility that can only be used with either an electric bicycle or an electric scooter, and if a user wants to use smart mobility differently depending on the purpose of use, it is a considerable cost because the smart mobility must be additionally purchased and used. There was a problem with spending.

Accordingly, an object of the present invention is to provide an electric scooter and a conversion kit for electric bicycles that can freely convert electric scooters and electric bicycles according to the purpose of use of the user.

In order to achieve the above object, the conversion kit for an electric scooter and electric bicycle according to an embodiment of the present invention is provided with an electric motor and is driven by electric force, and a lower frame is provided on an extension part extending toward the ground in one area of the lower frame. An electric scooter in which a crankshaft is inserted and installed in a direction corresponding to the vertical; And a conversion kit for converting the electric scooter into an electric bicycle by being assembled on the crankshaft provided in the electric scooter; the conversion kit includes a hollow center portion coupled to one end of the crankshaft and adjacent to the crankshaft. On the surface, the crank is provided with a gear toothed chainring; A crank arm provided to rotate integrally with the crankshaft and the chainring, including a first crank arm installed outside the crank and a second crank arm installed at the other end of the crankshaft; And a chain wound around a sprocket and a chainring provided on the rear wheel of the electric scooter to connect the sprocket and the chainring to transmit driving force generated by the electric motor to the rear wheel.

In the crank arm described above, each of the coupling portions having a hollow shape is formed at both ends, and at one end of both ends, a first coupling portion fitted with the crank shaft from the outside of the crank is formed, and the other end is formed with the user's foot pressure. It is preferable that the second coupling portion to which the pedal shaft of the pedal is fitted to transmit the signal is formed.

It is preferable that a roller bearing is incorporated in the inner circumference of the crank directly abutting the crankshaft described above and the inner circumference of the first engaging portion of the second crank arm.

The crank described above has a relatively larger diameter compared to the diameter of the chainring on the outside of the chainring to prevent the chain wound around the chainring from detaching from the cover to prevent separation of the chain wound around the chainring. A plate; is further included, and on the outer surface of the cover plate, a region corresponding to the installation region of the first crank arm is preferably provided in the shape of a recessed groove.

The above-described cover plate is preferably provided so as to reduce the frictional resistance by forming one or more through holes in an inner region along the circumferential direction to reduce weight, and processing the boundary of the through holes into a curved surface.

In the above-described conversion kit, when the sprocket is provided as a cassette sprocket composed of a multi-stage sprocket, it is preferable to further include a derailleur for adjusting the connection position of the chain wound around one sprocket.

In the above conversion kit, in order to bind a crank arm including a crank, a first crank arm, and a second crank arm to the crank shaft, a binding member including at least one of a binding ring, a binding pin, a binding bolt, and a nut member It is preferable to further include.

According to an embodiment of the present invention, it is possible to provide a smart mobility driven by an electric scooter and an electric bicycle depending on whether or not a conversion kit is installed, so that a user can freely convert and use a moving means according to the purpose of use. There is.

In addition, this effect allows users to experience two types of smart mobility at a small investment cost, thereby increasing user satisfaction.

In addition, according to an embodiment of the present invention, in converting from an electric scooter to an electric bicycle, components corresponding to the drive system of the bicycle are provided in the form of a conversion kit, so that even a non-expert can easily perform the conversion work of the moving means. There is an effect.

1 is an example of an electric scooter according to an embodiment of the present invention.
Figure 2 is a configuration diagram of a conversion kit according to an embodiment of the present invention.
3 is an example in which a conversion kit is assembled to an electric scooter according to an embodiment of the present invention.
4 is an example of a combination of a cover plate, a crank arm, and a pedal according to an embodiment of the present invention.
5 is an example of the shape of a crank arm according to an embodiment of the present invention.
6 is an example in which a conversion kit is installed in an electric scooter and converted into an electric bicycle according to an embodiment of the present invention.

In the following, various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, a number of specific details are disclosed to aid in an overall understanding of one or more aspects. However, it will be appreciated by those of ordinary skill in the art that this aspect(s) may be implemented without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used, and the descriptions described are intended to include all such aspects and their equivalents.

As used herein, "an embodiment", "example", "aspect", "example", etc. may not be construed as having any aspect or design described as being better or advantageous than other aspects or designs. .

In addition, the terms "comprising" and/or "comprising" mean that the corresponding feature and/or element is present, but excludes the presence or addition of one or more other features, elements, and/or groups thereof. It should be understood as not.

In addition, terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are those commonly understood by those of ordinary skill in the technical field to which the present invention belongs. It has the same meaning. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning Is not interpreted as.

The present invention relates to a conversion kit for an electric scooter and an electric bicycle, specifically, by assembling and installing a conversion kit including a drive system part of the electric bicycle in one area of the electric scooter, and according to the purpose of use of the user, the electric scooter or electric It relates to a conversion kit for electric scooters and electric bicycles that can be converted into bicycles and used.

More specifically, the present invention includes an electric scooter provided with an electric motor and driven by electric force.

At this time, the above-described electric scooter may be understood as being a body to which a conversion kit to be described later is installed, and preferably, it is preferably a two-wheel electric scooter, but it is understood that three-wheel and four-wheel electric scooters may also be included. It would be desirable.

Meanwhile, FIG. 1 shows an example of an electric scooter that is a target for installation of a conversion kit.

Continuing the description with reference to FIG. 1, the electric scooter 1 may be provided with an extension part extending toward the ground in one area of the lower frame, and the crankshaft in a direction perpendicular to the lower frame ( 10) may be installed.

At this time, the crankshaft 10 described above may be understood to be a central axis to which the crank is coupled among the components of the conversion kit to be described later, and the crank described above is used to convert a reciprocating motion into a rotational motion or vice versa. It can be understood as being a mechanical device that does.

As shown in Figure 1, the crankshaft 10 is inserted and installed in the extension, it is preferable that both ends are installed in a protruding shape, so that the constituent parts of the conversion kit can be combined and installed at both ends. .

Meanwhile, the conversion kit may largely include a crank, a crank arm, and a chain, and in order to more specifically describe the configuration of each of the above-described conversion kits, reference will be made to FIG. 2 showing a configuration diagram of the conversion kit.

First, the crank has a hollow center and is coupled to one end of the crankshaft 10, and a gear toothed chainring 100 may be provided on an adjacent surface coupled to the crankshaft 10.

At this time, in the crank described above, at least one roller bearing 160 may be embedded in the inner circumference of the center coupled to the crank shaft 10.

Specifically, the above-described roller bearing 160 is a bearing in which a plurality of rolls are inserted between the inner and outer rings, and the contact area with the crankshaft 10 is wide, so that the crankshaft 10 and the crankshaft 10 Can function to support the relative rotation of

Meanwhile, the above-described roller bearing 160 may be modified and changed to a bearing member including at least one of a ball bearing and a sealed bearing. When a ball bearing is used, it has the advantage of enabling high-speed rotation. In the case of a shield bearing, since the bearing is sealed by a shield plate, it is possible to protect the bearing from various foreign substances, thereby facilitating maintenance of the electric bicycle.

Next, the crank arm 120 described above includes a first crank arm coupled to the outside of the crank, and a second crank arm 120 installed at the other end of the crank shaft 10, that is, in a region opposite to the first crank arm. It may include.

At this time, the crank arm 120 described above will be understood as one of the drive systems for driving the electric bicycle with the foot force generated by the user stepping on the pedal 130 using the lever principle. In the present invention, the driving force of the electric motor It may be understood that it is used as an auxiliary means capable of assisting.

When describing the crank arm 120 as a shape feature, the first crank arm and the second crank arm described above may have coupling portions having a hollow shape at both ends, respectively.

Specifically, at one end of both ends of the crank arm 120, a first coupling portion that is tilted with the crank shaft 10 from the outside of the crank may be formed in a hollow shape, and a pedal that transmits the user's foot pressure to the other end The second coupling portion to which the shaft of the pedal 130 formed on the 130 is fitted may be formed in a hollow shape.

That is, the first coupling portion of the crank arm 120 is coupled with the crank shaft 10 and the second coupling portion with the pedal 130 shaft, so that the foot force generated by the user stepping on the pedal 130 is transmitted to the crank shaft 10 As a result, it can function as a drive system for electric bicycles.

Meanwhile, among the crank arms 120 mentioned above, it is preferable that a roller bearing 160 is embedded in the inner circumference of the first coupling portion of the second crank arm, and this also functions to support relative rotation with the crank shaft 10 It will be appreciated that it is understood to be provided for.

Next, the above-described chain is wound around the sprocket and chainring 100 provided on the rear wheel of the electric scooter, and functions to transmit the driving force generated in the electric motor to the rear wheel by connecting the sprocket and the chainring 100.

At this time, the above-described sprocket will be understood as a means for transmitting power including at least one of an electric motor and a foot force generated by the user stepping on the pedal 130 to the rear wheel by being wound around a chain by being coupled with the hub of the rear wheel. Like the ring 100, since the gear teeth are formed, the link constituting the chain and the link may be configured to be fitted between the link.

On the other hand, although FIG. 2 does not show the above-described sprocket, the above-described sprocket may be provided as a cassette sprocket having one or more sprockets having different sizes in multiple stages.

At this time, more preferably, when the above-described sprocket is provided as a cassette sprocket, it may further include a derailleur for adjusting the connection position of the chain wound around one sprocket.

The above-described derailleur may be understood as a drive system component that is installed on a hub of a rear wheel and is responsible for shifting by changing a position of a chain wound around one sprocket or by adjusting a tension of the chain.

Meanwhile, as another embodiment of the present invention, in the crank described above, in order to prevent separation of the chain wound around the chainring 100, the outer side of the chainring 100 is relatively more than the diameter of the chainring 100. A cover plate 110 having a large diameter to prevent the chain wound around the chain ring 100 from being separated may be further included.

At this time, the cover plate 110 described above may be installed only on one side of the chainring 100, but is preferably installed on both sides of the chainring 100, so that the chainring 100 is between the cover plates. It is desirable to efficiently prevent the chain from being separated by configuring it in a form located at.

At this time, when the cover plate 110 is provided on both sides, the cover plate 110 is spaced apart from each other at a distance corresponding to the thickness of the chainring 100, but does not interfere with the rotational drive of the chain (e.g. For example, it would be desirable to be installed at intervals of 1.2 to 1.5 times the thickness of the chain).

Meanwhile, as another embodiment of the above-described cover plate 110, a groove having a concave retracted shape is provided on the outer surface of the above-described cover plate 110, specifically, in a region corresponding to the installation region of the first crank arm. , A through hole may be provided.

Referring to FIG. 4 for a more detailed description of this, FIG. 4 shows an example of a coupling form of the cover plate 110, the crank arm 120, and the pedal 130 according to an embodiment of the present invention.

As shown in FIG. 4, in an area in which a crank provided with a chainring on which the chain 150 is wound and a cover plate 110 installed to prevent separation of the chain 150 are installed, a first crank arm ( 120) is installed.

As shown in FIG. 4, the cover plate 110 may be provided with a groove in the shape of being drawn from the outer surface to the inner surface of the cover plate 110.

At this time, the groove formed in the cover plate 110 may be understood as a groove for guiding the installation area of the first crank arm 120, and this configuration is, by assembling and installing a conversion kit on the electric scooter, electric bicycle By performing the function of assisting the guide of assembly and installation to the user who wants to perform the conversion, there is an effect of improving the convenience of assembly and installation of the conversion kit.

Meanwhile, as another embodiment of the cover plate 110 described above, one or more through-holes 111 are formed in one inner region along the circumferential direction in the cover plate 110 to reduce the weight of the cover plate 110. .

At this time, preferably, the boundary portion of the through hole 111 described above is processed into a curved surface, so that it is preferable that it is provided so as to reduce frictional resistance.

Meanwhile, in FIG. 4, an embodiment in which the first crank arm 120 is provided with a first coupling portion coupled to the crankshaft and a second coupling portion coupled to the pedal 130 shaft may also be confirmed.

That is, as mentioned above, the crank arm 120 may include a first coupling portion coupled to the crankshaft and a second coupling portion coupled to the pedal 130 shaft, and each coupling portion, a binding ring, a binding pin , It is bound by the binding member 200 including at least one of the binding bolt and the nut member, so that the installation of the conversion kit for converting the electric scooter to an electric bicycle can be completed.

Meanwhile, this binding member 200 is shown in the form of a binding bolt in FIG. 2, and in FIG. 2, it is understood that one binding member 200 is provided at each end of the crankshaft 10 as a reference. Although illustrated, the above-described binding member 200 includes at least one of a binding ring, a binding pin, a binding bolt, and a nut member in order to bind a drive system including at least one of a crank and a crank arm 120 It is natural that a plurality of members 200 may be provided.

On the other hand, FIG. 3 shows an example in which the conversion kit is assembled to the electric scooter 1 according to an embodiment of the present invention when viewed from the rear side of the electric scooter 1.

Accordingly, referring to FIG. 3, the example of assembling the conversion kit divided into left and right sides based on the electric scooter 1 will be described again. A chainring 100 is provided on the right side of the crankshaft 10, and A crank provided with a roller bearing 160 on the inner periphery may be installed.

At this time, the crank may be understood that the portion in which the chainring 100 is formed is relatively adjacent to the electric scooter 1 body.

Meanwhile, a cover plate 110 for preventing separation of the chain wound around the chainring 100 and the sprocket of the rear wheel may be installed outside the chainring 100. In the embodiment of FIG. 3, a cover plate ( 110) is shown as an example formed on one side, but may be formed on both sides based on the chainring 100.

In addition, a first crank arm 120a may be installed outside the cover plate 110 and to the right of the cover plate 110 in the embodiment of FIG. 3.

In this case, the first crank arm 120a described above may be provided with a first coupling portion formed to be coupled to the crank shaft 10 and a second coupling portion coupled to the shaft of the pedal 130a, respectively. The coupling portion is coupled to the crankshaft 10 and the pedal 130a shaft by the binding member 200, so that the assembly on the right side may be completed.

Meanwhile, referring to the assembly of the conversion kit coupled to the left side based on the electric scooter 1, a second crank arm 120b may be installed on the left side of the crank shaft 10 provided in the electric scooter 1 .

At this time, the second crank arm 120b is also the same as the first crank arm 120a described above, the first coupling portion coupled to the crankshaft 10, and the second coupling portion coupled to the pedal 130b shaft is hollow It may be provided in the form of, and a roller bearing 160 is included in the first coupling portion to support relative rotation with the crankshaft 10.

Likewise, the first coupling portion and the second coupling portion of the second crank arm 120b are coupled to the crank shaft 10 and the pedal 130b shaft by the coupling member 200 to complete the assembly on the left side.

That is, it can be understood that the assembly and installation of the conversion kit is completed by performing the assembly on the left and the right side of the embodiment of FIG. 3, and an example in which the assembly and installation of the conversion kit is completed can be seen in FIG. 6.

That is, as shown in FIG. 6, according to an embodiment of the present invention, a configuration corresponding to the drive system of a bicycle is provided as a single conversion kit 1000, and it can be easily installed on the electric scooter 1 As a result, since one smart mobility can be converted into two types according to the user's purpose of use, it is possible to derive a high user satisfaction with a small investment cost.

In particular, the conversion kit 1000 provided by the present invention, even for non-professionals with low understanding of the electric scooter 1 and the electric bicycle, by assembling and disassembling the conversion kit 1000 according to the purpose of use There is an effect that conversion can be easily performed.

On the other hand, in another embodiment of the present invention, the first coupling portion 1201 formed on the crank arm 120 described above has a curved inner circumferential shape having a smooth slope along the length direction of the crank arm 120 It can be provided with cotton.

At this time, it will be understood that the above-described curved surface is provided to limit the crankshaft and the coupling region, and thus the user may use the installation region as the curved surface of the crankshaft and the first coupling portion 1201 according to his or her height and purpose of use. By limiting it is possible to adjust the length of the crank arm 120.

That is, referring to FIG. 5 for a more detailed description of this, FIG. 5 shows a diagram showing the shape characteristics of the crank arm 120, and the shape characteristics of the first crank arm 120 described above in FIG. 5 You can look at.

On the other hand, the morphological feature of the crank arm 120 described in the present invention is that it is not required to purchase crank arm 120 having different lengths according to its own key and purpose of use. There is an effect that can be provided.

Although an embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiment presented in the present specification, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same idea. It will be possible to easily propose another embodiment by changing, deleting, adding, etc., but this will also be said to fall within the scope of the present invention.

In addition, the terms such as "include", "consist of" or "have" described above mean that the corresponding component may be embedded unless otherwise stated, excluding other components It should not be construed as being able to further include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Generally used terms, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning in the context of the related technology, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the technical field to which the present invention belongs will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to describe, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (7)

In the conversion kit for electric scooters and electric bicycles,
An electric scooter provided with an electric motor and driven by electric force, and in which a crankshaft is inserted and installed in an extension part extending toward the ground in a region of the lower frame in a direction corresponding to the lower frame; And
Including; a conversion kit for converting the electric scooter into an electric bicycle by being assembled on the crankshaft provided in the electric scooter,
The conversion kit,
A crank having a hollow central portion coupled to one end of the crankshaft, and having a gear tooth-shaped chainring on an adjacent surface coupled with the crankshaft;
A crank arm provided to rotate integrally with the crankshaft and the chainring, including a first crank arm installed outside the crank and a second crank arm installed at the other end of the crankshaft; And
A sprocket provided on a rear wheel of the electric scooter and a chain wound around the chainring and connecting the sprocket and the chainring to transmit driving force generated by the electric motor to the rear wheel; and
The crank arm,
A coupling part having a hollow shape is formed at both ends, and at one end of both ends, a first coupling part fitted with the crankshaft from the outside of the crank is formed, and the other end transmits the user's foot pressure. A second coupling portion to which the pedal shaft of the pedal is fitted is formed,
The first coupling portion is provided with a curved surface for defining a coupling region with the crankshaft along the length direction of the crank arm in the shape of the inner peripheral surface, and is provided to adjust the length of the crank arm,
The crank,
In order to prevent separation of the chain wound around the chainring, the outer side of the chainring has a relatively larger diameter compared to the diameter of the chainring to prevent separation of the chain wound around the chainring. A cover plate; is further included,
The outer surface of the cover plate is provided in the shape of a groove in which a region corresponding to the installation region of the first crank arm is recessed to guide the installation region of the first crank arm,
An electric scooter, characterized in that the inner one area of the cover plate is provided to reduce frictional resistance by forming at least one through hole along the circumferential direction to reduce the weight, and processing the boundary of the through hole into a curved surface. And conversion kits for electric bicycles.
delete The method of claim 1,
A conversion kit for electric scooters and electric bicycles, characterized in that roller bearings are incorporated in an inner periphery of the crank directly contacting the crankshaft and an inner periphery of the first coupling portion of the second crank arm.
delete delete The method of claim 1,
In the conversion kit,
When the sprocket is provided as a cassette sprocket composed of multi-stage sprockets, a derailleur for adjusting a connection position of a chain wound around one sprocket; of an electric scooter and an electric bicycle, characterized in that it further comprises Conversion kit.
The method of claim 1,
In the conversion kit,
In order to bind the crank arm including the crank, the first crank arm and the second crank arm to the crank shaft, a binding member including at least one of a binding ring, a binding pin, a binding bolt, and a nut member is further included Conversion kit for electric scooters and electric bicycles, characterized in that the.

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