Small mobility vehicle capable of changing one of its drive modes

Abstract

A small mobility vehicle comprising a base unit with a footplate (100) and a plurality of drive wheels (200, 210, 220) rotatably mounted on two opposite sides of the footplate (100); a first column unit (300) with a first plurality of connecting pieces (310, 320) arranged in series such that each connecting piece (310, 320) of the first plurality of connecting pieces (310, 320) is pivotally attached to another connecting piece (310, 320) of the first plurality of connecting pieces (310, 320), the footplate (100) being coupled to a lower end of a lower connecting piece (310) of the first plurality of connecting pieces (310, 320), and steering rods being coupled to an upper end of an upper connecting piece (320) of the first plurality of connecting pieces (310, 320). are;and a second column unit (400) with a second plurality of connecting pieces (410, 420) arranged in series such that each connecting piece (410, 420) of the second plurality of connecting pieces (410, 420) is pivotally connected to another connecting piece (410, 420) of the second plurality of connecting pieces (410, 420), and a seat (600) provided between the plurality of connecting pieces (410, 420) of the second column unit (400), wherein: the second column unit (400) is able to be folded in or unfolded when the second plurality of connecting pieces (410, 420) rotates; a lower end of a first connecting piece (410) of the second plurality of connecting pieces (410, 420) is pivotally connected to the base plate (100);and one end of a second connecting piece (420) of the second plurality of connecting pieces (410, 420) is rotatably coupled to an auxiliary wheel (500) configured to contact a floor when all connecting pieces (410, 420) of the second plurality of connecting pieces (410, 420) are unfolded, and wherein: when the second column unit (400) is folded, the second column unit (400) is coupled to the first column unit (300), and the seat (600) is configured to rotate on the connecting pieces (410, 420) of the second column unit (400) such that the seat (600) is folded in or unfolded; the first column unit (300) is positioned between the seat (600) and the second column unit (400); and the seat (600) is coupled to the second column unit (400).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a small mobility vehicle capable of changing a drive mode thereof, and more particularly to a small mobility vehicle capable of changing a drive mode thereof between a two-wheel drive mode and a three-wheel drive mode depending on driving conditions. BACKGROUND OF THE INVENTION

[0002] The information in this section merely provides background information related to the present disclosure and may not constitute prior art.

[0003] Recently, various mobility vehicles that use electricity, such as scooters, bicycles, and electric transportation devices, have been developed. Since electric transportation devices are environmentally friendly in that they do not produce harmful emissions and can be more compact, the popularity of electric transportation devices as personal transportation devices continues to grow. Such personal transportation devices are very useful and convenient on congested urban streets due to their speed, compactness, and mobility.

[0004] The personal transportation device includes a driving unit occupied by a driver, a drive unit, and a steering unit. The driver unit may be configured as a footplate on which the driver stands or as a seat on which the driver sits. The drive unit may include drive wheels, an electric motor for driving the drive wheels, and a battery for supplying electrical power to the electric motor. The steering unit may be configured as a handlebar that the driver directly holds for steering, or as a sensor for detecting a center of gravity, inclination, or the like.

[0005] Specifically for personal transportation, various types of two-wheeled personal mobility vehicles have been introduced to the market. The two-wheeled mobility vehicle has a zero turning radius, allowing it to move freely in narrow spaces.

[0006] Such a two-wheeled mobility vehicle may further include a steering mechanism to stabilize the physically unstable structure. However, in the event of a failure or malfunction of the steering mechanism, the rider is at risk of injury. Therefore, the two-wheeled mobility vehicle may not be suitable for high-speed travel.

[0007] Additionally, a three-wheeled mobility vehicle may be physically more stable than a two-wheeled mobility vehicle, but its turning radius may be relatively large compared to that of a two-wheeled mobility vehicle. If the three-wheeled mobility vehicle turns at this turning radius, it may roll over due to centrifugal force. SUMMARY

[0008] The present disclosure provides a small mobility vehicle capable of changing a drive mode thereof between a two-wheel drive mode and a three-wheel drive mode using a plurality of drive wheels and a foldable auxiliary wheel.

[0009] In some embodiments of the present disclosure, a small mobility vehicle may include: a base unit having a footplate and a plurality of drive wheels rotatably mounted on two opposite sides of the footplate; a first column unit having a first plurality of links arranged in series such that each link of the first plurality of links is pivotally mounted to another link of the first plurality of links, the footplate being coupled to a lower end of a lower link of the first plurality of links, and handlebars being coupled to an upper end of an upper link of the first plurality of links;and a second column unit having a second plurality of links arranged in series such that each link of the second plurality of links is pivotally connected to another link of the second plurality of links, the second column unit being capable of being folded or unfolded as the second plurality of links rotates; a lower end of a first link of the second plurality of links is pivotally connected to the base plate; and an end of a second link of the second plurality of links is rotatably coupled to an auxiliary wheel configured to contact a ground when all links of the second plurality of links are unfolded.;

[0010] The small mobility vehicle may be configured to travel straight when the drive wheels rotate at the same speed; and to make a turn when the drive wheels rotate at different speeds.

[0011] The auxiliary wheel of the second column unit may include a motor configured to steer the auxiliary wheel.

[0012] The small mobility vehicle may further comprise a seat disposed between the second plurality of connecting pieces of the second column unit.

[0013] The first link of the second plurality of links may be extended upward from a lower end of the first link when the second column unit is unfolded, and the first link of the second plurality of links is formed in a curve shape bent in a forward direction, with an upper end of the first link extending toward the first column unit.

[0014] The first link of the second plurality of links may have a third plurality of links configured to extend, and links of the second plurality of links other than the first link of the second plurality of links are positioned between links of the third plurality of links of the first link when the second column unit is folded.

[0015] The small mobility vehicle may further comprise a third link, wherein one end of the third link is connected to the other end of the second link, and the third link is configured to be parallel to the ground when the second column unit is unfolded; and a fourth link, wherein one end of the fourth link is connected to a portion between an upper end and a lower end of the first link, and the other end is connected to the other end of the third link.

[0016] The small mobility vehicle may further include a seat provided on the upper end of the first link; and a fifth link configured to hold the seat when the second column unit is unfolded, wherein one end of the fifth link is coupled to a portion between one end of the third link and the other end of the third link, and the other end of the fifth link is coupled to the upper end of the first link.

[0017] When the second column unit is in a folded state, the second column unit may be coupled to the first column unit.

[0018] The second column unit may be coupled to the lower connector of the first column unit.

[0019] The light mobility vehicle may further comprise a seat provided between the plurality of connecting pieces of the second column unit, wherein when the second column unit is folded: the seat is configured to rotate on the connecting pieces of the second column unit such that the seat is folded or unfolded; the first column unit may be positioned between the seat and the second column unit; and the seat may be coupled to the second column unit.

[0020] The small mobility vehicle may further comprise: a drive wheel connector configured to connect the plurality of drive wheels, including an upper portion or a lower portion from the center of any one of the plurality of drive wheels; and laterally displaceable so that the plurality of drive wheels are simultaneously tilted; a tilt rod rotatably coupled to the footplate and configured to extend in a forward and backward direction of the footplate;and a link connecting rod configured to connect the tilt rod and the drive wheel link, wherein the tilt rod is coupled to the lower link of the first column unit and is configured to rotate together with the link connecting rod when the first column unit pivots, and wherein the plurality of drive wheels are tilted when the drive wheel link laterally translates.;

[0021] The first link of the second column unit may be coupled to the tilt rod, and the second column unit is configured to tilt when the first link of the second column unit tilts.

[0022] Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are provided for purposes of illustration only and are not intended to limit the scope of the present disclosure. Character list

[0023] In order that the disclosure may be fully understood, various embodiments thereof will now be described, given by way of example, with reference to the accompanying drawings. In the drawings: Fig. 1 is a perspective view illustrating a second column unit of a small mobility vehicle in a folded state; Fig. 2 is a perspective view illustrating the second column unit of the small mobility vehicle in an unfolded state; Fig. 3 is a perspective view illustrating the folding / unfolding operation of the second column unit of the small mobility vehicle; and Fig. 4 is a front view illustrating the operation of components associated with a steering operation when the light mobility vehicle turns.

[0024] The drawings described herein are provided for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. DETAILED DESCRIPTION

[0025] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or areas of use. It should be understood that throughout the drawings, corresponding reference characters designate the same or similar parts and features.

[0026] Referring to Fig. 1 to Fig. 3, in some embodiments of the present disclosure, a small mobility vehicle comprises a base unit comprising a footplate 100 and a variety of drive wheels 200 which can be rotated on two opposite sides of the base plate 100 are attached, comprises a first column unit 300 , comprising a plurality of connecting pieces arranged in series so as to be hinged together and an upper connecting piece 320 include, and handlebars 330 which is connected to the upper end of the upper connector 320 are coupled, and a second column unit 400 , comprising a plurality of connecting pieces arranged in series to be hinged together and comprising a first connecting piece 410 , which is attached at one lower end to the base plate 100 is attached in an articulated manner, and a second connecting piece 420, which in relation to the footplate 100 can be unfolded or folded by turning, and an additional wheel 500 , which is connected to one end of the second connecting piece 420 coupled and configured to be brought into contact with the ground when the connecting pieces are unfolded by rotation thereof.

[0027] The base unit includes a footplate 101 and variety of drive wheels 200 which can be rotated on two opposite sides of the base plate 100 are attached.

[0028] The footplate 100 can serve as a space where the driver can rest his / her foot in a two-wheel drive motor or a three-wheel drive motor. The variety of drive wheels 200 For example, two drive wheels 210 and 220 which are located on the left and right side of the footplate 100rotatably mounted. Furthermore, one or more drive units (not shown) can be provided, which are connected to the drive wheels 200 for a rotation thereof transmit a rotational force. Even if the number of drive units (not shown) is one, the drive unit (not shown) can independently drive the drive wheels 200 in such a way as to transmit different amounts of driving force to the wheels 200 drive.

[0029] The first column unit 300 comprises a plurality of connecting pieces arranged in series and pivotally connected to one another to be rotated. The plurality of connecting pieces may comprise two connecting pieces, namely an upper connecting piece 320 and a lower connecting piece 310 In the case where the first column unit 300 the upper connecting piece 320 and the lower connecting piece 310the upper connecting piece 320 and the lower connecting piece 310 be directly and articulately connected to each other. The handlebars 330 can be connected to the upper end of the upper connector 320 be coupled so that the driver is able to steer the small mobility vehicle using them. The lower connecting piece 310 can be used with the footplate 100 The height of the first column unit 300 can be adjusted by rotating the connecting pieces, which are connected to each other in an articulated manner. In particular, the height of the first column unit 300 penetrating the upper connecting piece 320 , which is connected to the lower connecting piece 310 is articulated, with respect to the lower connecting piece 310 Furthermore, an element for maintaining the upper connecting piece 320in a stationary state after rotation of the upper connecting piece 320 The preceding element can be configured, for example, as a stopper that is located between the upper connecting piece 320 and the lower connecting piece 310 is arranged.

[0030] The second column unit 400 comprises a plurality of connecting pieces arranged in series and pivotally connected to one another for rotation. The second column unit 400 can be folded in or out by turning the connecting pieces. Of the two or more connecting pieces of the second column unit 400 can be a first connecting piece 410 at the lower end of it with the foot plate 100 be connected in a joint to be rotated. An additional wheel 500 is rotatable with one end of the second connecting piece 420, of which two or more connecting pieces of the second column unit 400 , rotatably coupled. In the case where the second column unit 402 connecting pieces, namely the first connecting piece 410 the second connecting piece 420 , the upper end of the first connecting piece 410 directly and articulated with the opposite end of the second connecting piece 420 Alternatively, the first connecting piece 410 and the second connecting piece 420 at least one intermediate connecting piece must be further connected.

[0031] If the second column unit 400 is folded, the first connecting piece 410 in relation to the footplate 100 rotated so that the second column unit 400 the first column unit 300 approaching and over the footplate 100When the drive motor is switched to a two-wheel drive motor by folding the second column unit 400 is switched, the center of gravity of the mobility vehicle is shifted backwards, thereby ensuring the stability of the mobility vehicle.

[0032] If the second column 100 if the second column unit 400 is unfolded, the connecting pieces, including the first connecting piece 410 , so that the additional wheel 500 that with the second connecting piece 420 coupled, is brought into contact with the ground. Consequently, the drive motor is switched to a three-wheel drive motor. The additional wheel 500 can be configured to rotate freely using bearings without the application of any driving force from the drive unit to it.

[0033] As such, in some embodiments of the present disclosure, the small mobility vehicle having the above-described construction is capable of switching the drive motor thereof between the two-wheel drive motor and the three-wheel drive motor in accordance with drive conditions.

[0034] If the drive wheels 210 and 220 which are located on the left and right side of the footplate 100 positioned, rotate at the same speed relative to each other, the micromobility vehicle can drive straight ahead. If the drive wheels 210 and 220 rotate relative to each other at different speeds, then the small mobility vehicle can rotate or turn. The drive unit (not shown) for driving the drive wheels 200 The small mobility vehicle can be moved by turning the drive wheels 210 and 220at different speeds towards each other. In one example, an indicator motor on each of the drive wheels 210 and 220 provided to avoid a difference in the rotational speed between the drive wheels 210 and 220 Instead of the internal wheel motors, the same effect can be obtained if each of the motors is aligned with a shaft of a respective one of the drive wheels 210 and 220 is arranged.

[0035] The difference in rotational speed between the drive wheels 210 and 220 via detection of the rotation of the handlebars 330 be generated.

[0036] The additional wheel 500 , which is connected to one end of the second connecting piece 420 the second column unit 400 can be equipped with a motor (not shown) to steer the auxiliary wheel 500The motor (not shown) can be used to drive the auxiliary wheel 500 in response to the rotation of the handlebars 330 steer.

[0037] Between the connecting pieces that connect the second column unit 400 form, a seat 600 In the three-wheel drive motor, in which the second column unit 400 In the unfolded state, a space is created to allow the bicycle to rest on the seat 600 to sit down. The seat 600 can be configured to then, when the second column unit 400 folded to switch to the two-wheel drive motor, rotated or folded.

[0038] The first connecting piece 410 , which is the second column unit 400 may be formed in the shape of a curve, so that in the folded state of the second column unit 400 the first connecting piece 410from the lower end thereof extends upwards from its lower end which is connected to the foot plate 100 connected, extends upwards and is bent in the forward direction so that the upper end of which is near the first column unit 300 is located.

[0039] Consequently, in the folded state of the second column unit 400 To enable the driver to comfortably enter the small mobility vehicle, the height of the second column unit 400 kept as low as possible, and the gravity of the second column unit 400 Furthermore, in the expanded state of the second column unit 400 this is the first connecting piece 410 designed in such a way that its upper end is oriented upwards, and the seat 600 can be placed on the upper end of the first connector 410be arranged, which ensures the stability of the mobility vehicle.

[0040] The first connecting piece 410 , which is the second column unit 400 may comprise a plurality of connecting pieces arranged parallel to each other to be at a predetermined distance from each other. When the second column unit 400 is folded out, the other connecting pieces of the second column unit 400 rotated and in the space between the unit connectors of the first connector 410 positioned.

[0041] The reason for this design is to minimize the space occupied by the second column unit 400 to minimize the inconvenience for the driver when the second column unit 400 is folded in to switch to the two-wheel drive motor.

[0042] At least one intermediate connecting piece may be provided between the first connecting piece 410 and the second connecting piece 400 420 , which is the second column unit 400 In the example that in Fig. 1 to Fig. 3, three connecting pieces can be further arranged between the first connecting piece 410 and the second connecting piece 420 In other words, the second column unit 400 can include five connecting pieces.

[0043] The second column unit 400 a third connecting piece can 430 which has one end that is connected to the opposite end of the second connecting piece 420 connected to lie parallel to the ground when the second column unit 400 is unfolded, and can accommodate a fourth connecting piece 440which has an end that is connected to a section between the upper end and the lower end of the first connecting piece 410 and the opposite end, and whose opposite end is connected to the opposite end of the third connecting piece 430 is connected.

[0044] If the second column unit 400 is unfolded, then the third connecting piece 430 rotated and lies parallel to the ground, whereby the entire length of the unfolded third of the unfolded the second column unit 400 to a limited area defined by the length of the third connecting piece 430 is maximized. The third connecting piece 430 may comprise a plurality of unit connectors arranged parallel to each other so as to be spaced apart from each other at a predetermined distance. When the second column unit 400is folded, the unit connectors of the third connector 430 to allow in the space between the unit connectors of the first connector 410 To be positioned, the distance between the unit connectors of the third connector 430 be set to be smaller than the distance between the unit connectors of the first connector 410 to be.

[0045] Since the fourth connecting piece 440 is arranged to connect the third connecting piece 430 and the first connecting piece 410 to connect with each other, and at the third connecting piece 430 and the first connecting piece 410 is attached in a hinged manner, the fourth connecting piece 440 rotated when the second column unit 400 unfolded, folded or unfolded.

[0046] The second column unit400 may also include a fifth connecting piece 450 one end of which is connected to a section between one end and the opposite end of the third connecting piece 430 and whose opposite end is connected to the upper end of the first connecting piece 410 If the second column unit 400 in the unfolded state, then the fifth connecting piece 450 serve to secure the seat 600 which is connected to the upper end of the first connecting piece 410 so that the load applied to the seat 600 applied evenly to the drive wheels 200 which are attached to the base plate 100 are attached, and the additional wheel 500 is distributed.

[0047] If the second column unit 400 is folded, it can be used with the first column unit 300The reason for this is to prevent the connectors of the second column unit 400 in the folded state of the second column unit 400 for the two-wheel drive motor can be undesirably rotated and unfolded. The second column unit can 400 with the lower connecting piece 310 the first column unit 300 Because the upper connecting piece 320 the first column unit 300 configured to allow for adjustment of the height of the first column unit 300 To be rotated, it is desirable that the second column unit 400 with the lower connecting piece 310 which is connected to the base plate 100 extending upwards, to be coupled.

[0048] A coupling element can 610 under the seat 600be provided between the connecting pieces of the second column unit 400 In one example, the seat 600 on the upper end of the first connecting piece 410 and may be configured to be arranged with respect to the first connecting piece 410 to be turned in order to be folded or unfolded. When the seat 600 is folded in, the coupling element 610 be exposed. Especially in the folded state of the second column unit 400 the seat 600 with respect to the first connecting piece 410 the second column 100 400 rotated so that a space between the seat 600 and the first connecting piece 410 is formed and the first column unit 300 is placed in the room, and then again in relation to the first connecting piece 410is rotated to connect to the first connector 410 In this way, the second column unit 400 at the first column unit 300 in the folded state of the second column unit 400 be secured.

[0049] Referring to Fig. 4, in some embodiments of the present disclosure, the small mobility vehicle further comprises a drive wheel connector 710 , which is a section that runs from the Graham center of one of the drive wheels 210 and 220 biased upwards or downwards, and a section which is guided by the rotation center of the other of the drive wheels 210 and 220 preloaded upwards or downwards, so that the drive shaft 210 and 220 together when the drive wheel connector 710 laterally shifted, a tilt rod 700, which is rotatable with the base plate 100 is coupled and moves in the forward and backward direction of the footplate 100 extends, and a connecting piece connecting rod 720 , which the tilt rod 700 and the drive wheel connector 710 connects with each other. The tilt rod 700 can be connected to the lower connector 310 the first column unit 300 be coupled. If the tilt rod 700 can be connected to the lower connector 310 the first column unit 300 If the first column unit 300 swiveled, then the tilt rod 700 and the connecting rod 720 turn the drive wheel connector 710 can shift laterally and consequently the drive wheels 210 and 220 be tilted or glued together.

[0050] The drive wheel connector 710 is above or below ten, which with the drive wheels 210 and 220 are connected as a 4-bar drive wheel connector 710 lateral displacement, the drive wheels can therefore 210 and 220 be glued together.

[0051] The tilt rod 700 can be rotated on the base plate 100 be coupled and may be arranged to be in the forward path behind the drive wheel connector 710 in accordance with the rotation of the tilt rod 700 swiveled.

[0052] The lower connecting piece of the first columns of a 300 can be connected to the upper end of the lower connecting piece of the first column unit 300 can be used instead of the footplate 100 with the tilt rod 700 be coupled. If the first column unit 300as a result of manipulation or operation of the handlebars 330 which is located at the upper end of the upper connector 320 the first column unit 300 provided, then the tilt rod can therefore 700 turn and the drive wheel connector 710 may occur as a result of the connector-connecting rod 700 120 , which is connected to the tilt rod 700 At the same time, the footplate can 100 and the drive wheel connector 710 shift laterally and consequently the drive wheels 210 and 220 be tilted together.

[0053] The lower end of the first connecting piece 410 the second column unit 400 can be adjusted with the tilt rod 700 instead of the footplate 100 be coupled. If the first column unit 300swiveled, the second column unit can therefore also 400 as a result of the rotation of the tilt rod 700 The lower connecting piece can 310 the first column unit 300 with the front end of the tilt rod 700 be coupled and the first connecting piece 410 the second column unit 400 can be used with the rear end of the tilt rod 700 be coupled.

[0054] If the first column unit 300 as a result of operating the handlebars 330 swiveled, the tilt rod can therefore 700 rotate and consequently the drive wheels 210 and 220 and the second column unit 400tilted together, thereby reducing rollover that may be caused by centrifugal holding force when the mobility vehicle is taking off at high speed, especially in the three-wheel drive motor.

[0055] As apparent from the above description, in some embodiments of the present disclosure, a small mobility vehicle is capable of moving freely with a reduced turning radius in a narrow space by folding a second column unit to convert the driver motor into a two-wheel drive motor, and is also capable of traveling stably at a high speed by unfolding the second column unit to convert the driver motor into a three-wheel drive motor.

[0056] The description of the disclosure is merely exemplary in nature, and thus, variations that do not depart from the spirit of the disclosure are intended to be within the scope of the disclosure. Such variations should not be regarded as a departure from the spirit and scope of the disclosure.

Claims

[1] Small mobility vehicle, comprising a base unit having a footplate and a plurality of drive wheels rotatably mounted on two opposite sides of the footplate; a first column unit having a first plurality of links arranged in series such that each link of the first plurality of links is pivotally attached to another link of the first plurality of links, wherein the foot plate is coupled to a lower end of a lower link of the first plurality of links, and handlebars are coupled to an upper end of an upper link of the first plurality of links; and a second column unit having a second plurality of links arranged in series such that each link of the second plurality of links is pivotally connected to another link of the second plurality of links, wherein: the second column unit is capable of being folded or unfolded when the second plurality of links rotates; a lower end of a first connecting piece of the second plurality of connecting pieces is pivotally connected to the base plate; and one end of a second link of the second plurality of links is rotatably coupled to an auxiliary wheel configured to contact a ground when all links of the second plurality of links are deployed. [2] The small mobility vehicle of claim 1, wherein the small mobility vehicle is configured to to drive straight ahead when the drive wheels are rotating at the same speed; and to make a turn when the drive wheels are rotating at different speeds. [3] Small mobility vehicle according to claim 1, wherein: the auxiliary wheel of the second column unit has a motor configured to steer the auxiliary wheel. [4] Small mobility vehicle according to claim 1, further comprising: a seat disposed between the second plurality of connecting pieces of the second column unit. [5] Small mobility vehicle according to claim 1, wherein: the first link of the second plurality of links is formed in a curved shape bent in a forward direction, wherein an upper end of the first link is extended toward the first column unit when the second column unit is folded. [6] Small mobility vehicle according to claim 1, wherein: the first connector of the second plurality of connectors has a third plurality of connectors configured to extend, and Connectors of the second plurality of connectors other than the first connector of the second plurality of connectors are positioned between connectors of the third plurality of connectors of the first connector when the second column unit is folded. [7] Small mobility vehicle according to claim 1, further comprising: a third connecting piece, wherein one end of the third connecting piece is connected to the other end of the second connecting piece, and the third connecting piece is configured to lie parallel to the ground when the second column unit is unfolded; and a fourth connector, one end of the fourth connector being connected to a portion between an upper end and a lower end of the first connector, and the other end of the fourth connector being connected to the other end of the third connector. [8] Small mobility vehicle according to claim 7, further comprising: a seat provided on the upper end of the first connecting piece; and a fifth link configured to hold the seat when the second column unit is unfolded, wherein one end of the fifth link is coupled to a portion between one end of the third link and the other end of the third link, and the other end of the fifth link is coupled to the upper end of the first link. [9] Small mobility vehicle according to claim 1, wherein: when the second column unit is folded, the second column unit is coupled to the first column unit. [10] Small mobility vehicle according to claim 9, wherein: the second column unit is coupled to the lower connecting piece of the first column unit. [11] Small mobility vehicle according to claim 9, further comprising: a seat provided between the plurality of connecting pieces of the second column unit, wherein when the second column unit is folded: the seat is configured to rotate on the connecting pieces of the second column unit such that the seat is folded or unfolded; the first column unit is positioned between the seat and the second column unit; and the seat is coupled to the second column unit. [12] Small mobility vehicle according to claim 1, further comprising: a drive wheel connector configured to: Connecting the plurality of drive wheels including an upper portion or a lower portion from the center of any one of the plurality of drive wheels; and lateral displacement so that the plurality of drive wheels are tilted simultaneously; a tilt rod rotatably coupled to the footplate and configured to extend in a forward and backward direction of the footplate; and a connector connecting rod configured to connect the tilt rod and the drive wheel connector, wherein the tilt rod is coupled to the lower link of the first column unit and is configured to rotate together with the link link rod when the first column unit pivots, and wherein the plurality of drive wheels are tilted when the drive wheel link laterally translates. [13] Small mobility vehicle according to claim 12, wherein: the first connecting piece of the second column unit is coupled to the tilt rod, and the second column unit is configured to tilt when the first connecting piece of the second column unit tilts.

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