Cart mountable to coaxial two-wheeled electric mobility device

Abstract

According to an embodiment of the present invention, a cart mountable to a coaxial two-wheeled electric mobility device comprises: a loading unit on which a load is stably placed; a pair of freewheels disposed on the lower portion of the loading unit; a pair of electric mobility device-mounting units detachably coupled to a wheel connection shaft which is connected to the loading unit and connects a coaxial two-wheeled electric mobility device body to a driving wheel; and a handle unit disposed on the upper portion of the loading unit.

Description

Coaxial two-wheeled electric stationary cart

[0001] The present invention relates to a coaxial two-wheeled motor-mounted cart, and more particularly, to a coaxial two-wheeled motor-mounted cart that is mounted on a two-wheeled motor and can transport a load.

[0002]

[0003] Recently, personal transportation devices such as electric motorcycles, electric bicycles, and coaxial two-wheeled electric motors using electric motors are being developed.

[0004] Among them, the coaxial two-wheeled motor is an upright moving device that can move at a certain speed by means of two wheels positioned in parallel and an electric motor that drives them, and has the characteristic of maintaining its own balance without falling over by means of a control algorithm using a built-in gyro sensor.

[0005] Unlike other means of transportation, coaxial two-wheeled electric vehicles do not have separate accelerators or stop devices, so they can move forward and backward depending on the driver's center of gravity, and stop when the driver maintains a vertical position with the ground.

[0006] However, even if a coaxial two-wheeled motor has a balance maintenance device, the driver must also pay attention to posture control to avoid falling over due to the center of gravity.

[0007] Accordingly, when a user is carrying a load while riding a coaxial two-wheeled motor, the center of gravity changes depending on the direction in which the load is being carried, making it more difficult to maintain balance and causing safety accidents such as overturning while driving.

[0008] Therefore, it is necessary to develop an auxiliary device that can safely and easily transport large loads using a coaxial two-wheeled motor.

[0009]

[0010] The purpose of the present invention is to develop a coaxial two-wheeled motor-mounted cart that can safely transport loads by connecting the cart to a two-wheeled motor.

[0011] The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0012]

[0013] The above-described object is achieved by a coaxial two-wheeled motor-mounted cart including a loading portion on which a load is placed, a pair of freewheels provided at the lower portion of the loading portion, an electric motor mounting portion connected to the loading portion and detachably coupled to a wheel connecting shaft connecting a coaxial two-wheeled motor body and a drive wheel, and a handle portion provided at the upper portion of the loading portion, according to one embodiment of the present invention.

[0014] In addition, the motor mounting portion may include a connecting member connected to the loading portion, and a mounting member vertically connected to the connecting member and having a mounting groove formed in one direction into which a wheel connecting shaft is inserted.

[0015] Additionally, the mounting groove may be formed diagonally with respect to the ground, with the opening formed on the lower side of the mounting member.

[0016] Additionally, the motor mounting portion may further include a fastening portion that blocks the opening of the mounting groove after the wheel connecting shaft is inserted to prevent detachment.

[0017] In addition, the fastening member may include a pair of fixing members formed in a ring shape and arranged in the axial direction of the wheel connecting shaft, and a driving member arranged between the pair of fixing members and rotating the fixing member by driving the lower surface in the up-and-down direction depending on whether the lower surface is in contact with the wheel connecting shaft.

[0018] Additionally, the surfaces of the fixed member and the driving member that come into contact with each other can be formed in a sawtooth shape.

[0019] Additionally, the handle portion may include a handle member extending upward from the loading portion, and an angle changing member connecting the loading portion and the handle portion and adjusting the angle of the handle member.

[0020] Additionally, the motor mount may further include a panel member extending to the upper portion of the drive wheel to protect the passenger from rotation of the coupled drive wheel.

[0021]

[0022] According to a coaxial two-wheeled motor-mounted cart according to one embodiment of the present invention, it is connected to the shaft of a parallel two-wheeled motor and can drive while carrying a large amount of load, thereby improving driving safety and transport efficiency.

[0023]

[0024] FIG. 1 is a schematic drawing showing a state in which a coaxial two-wheeled motor-mounted cart according to one embodiment of the present invention is coupled to a coaxial two-wheeled motor.

[0025] FIG. 2 is a side view of a coaxial two-wheeled electric motor-mounted cart according to one embodiment of the present invention.

[0026] FIG. 3 is a plan view of a coaxial two-wheeled motor-mounted cart and a coaxial two-wheeled motor according to another embodiment of the present invention.

[0027] Fig. 4 is a right side view showing one embodiment of a motor mounting part included in a coaxial two-wheeled motor mounting cart of the present invention.

[0028] FIG. 5 is a perspective view of a coaxial two-wheeled electric motor-mounted cart according to another embodiment of the present invention.

[0029] Figure 6 is an operation diagram of the coaxial two-wheeled electric motor-mounted cart illustrated in Figure 5.

[0030] Fig. 7 is a right side view showing another embodiment of a mounting member included in the motor mounting portion of Fig. 2.

[0031] FIG. 8 is a perspective view of a coaxial two-wheeled electric motor-mounted cart according to another embodiment of the present invention.

[0032]

[0033] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0034] The same reference numbers or symbols used in each drawing of this specification represent parts or components that perform substantially the same functions. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

[0035] The terminology used herein is for the purpose of describing embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "has" and the like are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0036] While terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, the components are not limited by these terms, and these terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a second component, and similarly, a second component could also be referred to as a first component.

[0037] Hereinafter, a coaxial two-wheeled electric motor-mounted cart according to one embodiment of the present invention will be described in detail with reference to the drawings.

[0038] FIG. 1 is a schematic diagram showing a state in which a coaxial two-wheeled motor-mounted cart according to one embodiment of the present invention is coupled to a coaxial two-wheeled motor. FIG. 2 is a side view of a coaxial two-wheeled motor-mounted cart according to one embodiment of the present invention. FIG. 3 is a plan view of a coaxial two-wheeled motor-mounted cart and the coaxial two-wheeled motor according to another embodiment of the present invention. FIG. 4 is a right side view showing an embodiment of a motor mounting part included in a coaxial two-wheeled motor-mounted cart according to the present invention. FIG. 5 is a perspective view of a coaxial two-wheeled motor-mounted cart according to another embodiment of the present invention. FIG. 6 is an operation diagram of the coaxial two-wheeled motor-mounted cart illustrated in FIG. 5. FIG. 7 is a right side view showing another embodiment of a mounting member included in the motor mounting part of FIG. 2. FIG. 8 is a perspective view of a coaxial two-wheeled motor-mounted cart according to another embodiment of the present invention.

[0039] Referring to FIGS. 1 to 3, a coaxial two-wheeled motor-mounted cart (10) includes a loading portion (100), a freewheel (200), a motor mounting portion (300), and a handle portion (400).

[0040] The loading section (100) has a space on the upper side where a load can be loaded. For example, the loading section (100) may be formed in a rectangular shape, but may be provided in various shapes within a form in which a load can be loaded. A freewheel (200), an electric motor holder (300), and a handle (400) are connected to the loading section (100).

[0041] The freewheel (200) is connected to the lower side of the loading unit (100). The freewheel (200) may be provided in pairs. The freewheel (200) may be provided at the front of the loading unit (100). The freewheel (200) may be provided so as to be rotatable with a rotation axis formed vertically to the ground. For example, the freewheel (200) may be provided as a caster.

[0042] The motor mounting part (300) is connected to the loading part (100). The motor mounting part (300) is arranged on the other side of the loading part (100) to which the freewheel (200) is coupled. For example, the motor mounting part (300) may be arranged at the rear of the loading part (100). The motor mounting part (300) may be detachably coupled to a wheel connecting shaft (23) connecting the motor main body (21) and the driving wheel (22).

[0043] Typically, a wheel connecting shaft (23) is provided in an exposed form between a coaxial two-wheeled motor (20) and a drive wheel (22). Accordingly, the motor mounting portion (300) will be understood to have a thickness that can be inserted between the motor main body (21) and the drive wheel (22).

[0044] When the motor mounting part (300) is coupled to the wheel connecting shaft (23), if the wheel connecting shaft (23) rotates, the mounted part may wear out, resulting in a breakdown or damage to the motor (20). To prevent this, the coaxial two-wheeled motor (20) used in the present invention is described as including a motor in which a stator (not shown) and a rotor (not shown) are provided inside the driving wheel (22), and the wheel connecting shaft (23) to which the motor main body (21) and the stator are connected does not rotate, but the rotor and a plurality of gears are meshed and connected to rotate the wheel housing.

[0045] Regarding the motor mounting part (300) again, the motor mounting part (300) includes a connecting member (320) and a mounting member (340).

[0046] The connecting member (320) is connected to the loading part (100). The connecting members (320) may be provided as a pair. The connecting members (320) are connected to the lower side of the loading part (100). For example, the connecting member (320) may have a rectangular plate shape and may be horizontally connected to the lower side of the loading part (100). As illustrated in FIG. 3, the connecting member (320) may be connected to the loading part (100) so as to be movable laterally by forming a plurality of guide holes (322) spaced apart from each other in the vertical direction. The connecting member (320) may have a width that can be adjusted laterally so as to be mounted on electric motors (20) of various sizes.

[0047] The mounting member (340) has one end connected to the connecting member (320) and the other end detachably coupled to the wheel connecting shaft (23). The mounting member (340) may be formed integrally with the connecting member (320). The mounting member (340) may be vertically connected to the connecting member (320). The mounting member (340) may be formed with a thickness equal to or smaller than the width of the exposed wheel connecting shaft (23). The mounting member (340) may have a mounting groove (342) formed in a ring shape into which the wheel connecting shaft (23) is inserted.

[0048] The mounting groove (342) may have an opening formed in the lower direction of the mounting member (340). The mounting groove (342) may be formed with a width equal to or greater than the diameter of the wheel connecting shaft (23).

[0049] According to one embodiment of the present invention, when the wheel connecting shaft (23) is inserted into and coupled to the mounting groove (342), the wheel connecting shaft (23) is not fixed to the mounting member (340), which creates a risk of separation during movement. Accordingly, the motor mounting member (300) according to another embodiment of the present invention may further include a fastening member (360) that increases the coupling force between the mounting member (340) and the wheel connecting shaft (23).

[0050] The fastening member (360) may be placed on the side of the mounting member (340), as illustrated in FIG. 4. At this time, the sum of the thicknesses of the mounting member (340) and the fastening member (360) may be formed to be equal to the width of the exposed wheel connecting shaft (23). The fastening member (360) includes a fixing member (362) and a driving member (364).

[0051] The fixing member (362) may be arranged on one side of the mounting member (340). The fixing member (362) may be formed in a ring shape. The fixing member (362) may be rotatably coupled to the mounting member (340). The fixing member (362) may be arranged adjacent to the mounting groove (342). The fixing members (362) may be provided in pairs. One fixing member (362a) may be arranged symmetrically with the other fixing member (362b) with respect to the center of the mounting groove (342).

[0052] The driving member (364) may be arranged on one side of the mounting member (340). The driving member (364) may be arranged on the same side as the fixing member (362). The driving member (364) may be arranged between a pair of fixing members (362). The driving member (364) may be arranged at a position where one side overlaps the mounting groove (342). The driving member (364) may be provided with a guide groove (3642) formed on the inside so as to be driven up and down with respect to the mounting member (340). The driving member (364) may be in surface contact with the rotating portion of the fixing member (362). At this time, the driving member (364) and the fixing member (362) may be engaged by forming contact surfaces in a sawtooth shape, respectively.

[0053] Hereinafter, the operating method of the fastening member (360) according to the above-described example will be explained. When the wheel connecting shaft (23) is inserted into the receiving groove (342), the upper side of the wheel connecting shaft (23) comes into contact with the lower side of the driving member (364). Then, due to the interaction between the wheel connecting shaft (23) and the driving member (364), the driving member (364) is driven upward, and the fixed member (362) engaged with the gear rotates. Then, one end of the fixed member (362) that has completed rotation moves to a position where it overlaps the receiving groove (342), thereby blocking the opening of the receiving groove (342) of the wheel connecting shaft (23), thereby preventing the wheel connecting shaft (23) from coming off.

[0054] The handle part (400) is connected to the loading part (100). The handle part (400) is provided in a form that extends upward from the loading part (100). For example, the handle parts (400) may be provided as a pair, but the form in which they are provided to the loading part (100) is not limited. The handle part (400) may be connected to the upper side of the loading part (100). The handle part (400) includes a handle member (420) and an angle changing member (440).

[0055] As illustrated in FIG. 5, the handle member (420) may be connected to the loading portion (100) via an angle-changing member (440). The handle member (420) may be vertically connected to the loading portion (100). The handle member (420) may be positioned adjacent to the rear of the loading portion (100), but the position at which it is positioned is not limited. The handle member (420) may be formed to be height-adjustable.

[0056] The angle change member (440) has one side connected to the loading portion (100) and the other side connected to the handle member (420). As illustrated in Fig. 6, the angle change member (440) may be connected to the handle member (420) by a fixing pin (442). At this time, the handle member (420) may be provided so as to be foldable toward the loading portion (100).

[0057] The length of the rider's arm varies depending on the height of the rider riding the coaxial two-wheeled electric motor (20). The angle changing member (440) can change the angle of the handle member (420) so that the handle member (420) is positioned in an optimal position depending on the rider. The angle changing member (440) can have a plurality of angle adjusting grooves (444) formed along the circumference with respect to the fixing pin (442). At this time, the handle member (420) has a through groove (not shown) formed at a position corresponding to the angle adjusting groove (444) and an angle adjusting pin (446) inserted therein, thereby adjusting the angle.

[0058] In the above-described example, the mounting groove (342) was described as being formed in a vertical direction to the ground, but as illustrated in FIG. 7, the mounting groove (342) may be formed in a diagonal direction to the ground.

[0059] Accordingly, if the mounting groove (342) is formed in a vertical direction on the ground, there is a risk that if a rider passes over a bump formed on the road surface at high speed while using the motor (20), the rider may become airborne due to the impact and the cart (10) and motor (20) may become detached. Therefore, by forming the mounting groove (342) in a diagonal direction, there is an effect of reducing the risk of detachment due to an impact in the upper and lower direction.

[0060] According to one embodiment of the present invention, when a passenger rides on an electric motor (20) equipped with a cart (10) and moves, the driving wheel (22) may be exposed, causing an accident such as a collar getting caught in the driving wheel (22) or a foreign substance hitting the passenger due to the rotation of the driving wheel (22). Therefore, in order to protect the passenger from the driving wheel (22), the electric motor mounting member (300) may further include a panel member (380) extending upward from the mounting member (340) toward the driving wheel (22), as illustrated in FIG. 8.

[0061] The panel member (380) may be provided as a plate having a curved shape. The panel member (380) may be formed integrally with the mounting member (340). The panel member (380) may be formed in a shape that surrounds the outer circumference of the driving wheel (22).

[0062] In the above-described example, the panel member (380) is described as being formed on the motor mounting portion (300), but, differently, the panel member may be formed on the coaxial two-wheeled motor (20). If the panel member is formed on the coaxial two-wheeled motor (20), the wheel connecting shaft (23) is not exposed, so the mounting member (340) with the lower side opened cannot be coupled. Accordingly, the mounting groove (342) according to another embodiment of the present invention can be coupled with the wheel connecting shaft (23) by forming the opening at the rear of the mounting member (340).

[0063] At this time, since the wheel connecting shaft (23) may be detached from the mounting groove (342) when the motor (20) is moving backwards, although not shown in the drawing, the motor mounting portion (300) is provided with the above-described fastening portion (360) to prevent the wheel connecting shaft (23) from being detached.

[0064] Although all components constituting the embodiments of the present invention have been described above as being combined or operating in combination, the present invention is not necessarily limited to these embodiments. That is, within the scope of the purpose of the present invention, all components may be selectively combined and operated one or more times. In addition, terms such as "include," "comprise," or "have" described above, unless specifically stated to the contrary, mean that the corresponding component may be inherent, and therefore should be interpreted as including other components rather than excluding other components. All terms, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the art to which the present invention pertains, unless otherwise defined. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related technology, and shall not be interpreted in an ideal or overly formal sense, unless explicitly defined in the present invention.

[0065] The above description is merely an illustrative description of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations may be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of ​​the present invention, but rather to explain it, 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 a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. Loading section where the luggage is placed; A pair of freewheels provided at the lower part of the above loading section; A motor mounting part that is connected to the above loading part and detachably coupled to a wheel connecting shaft that connects the coaxial two-wheeled motor body and the driving wheel; and A coaxial two-wheeled electric motor-mounted cart including a handle provided on the upper part of the loading section.

2. In paragraph 1, The above motor mounting part, A connecting member connected to the above loading portion; and A coaxial two-wheeled electric motor-mounted cart including a mounting member that is vertically connected to the above-mentioned connecting member and has a mounting groove formed in one direction into which the wheel connecting shaft is inserted.

3. In paragraph 2, The above mounting groove is, A coaxial two-wheeled electric motor-mounted cart in which an opening is formed on the lower side of the above-mentioned mounting member and is formed in a diagonal direction with respect to the ground.

4. In paragraph 2, The above motor mounting part, A coaxial two-wheeled electric motor-mounted cart further comprising a fastening member that blocks the opening of the mounting groove to prevent detachment after the wheel connecting shaft is inserted.

5. In paragraph 4, The above fastening part is, A pair of fixed members formed in a ring shape and arranged in the axial direction of the wheel connecting shaft; and A coaxial two-wheeled electric motor-mounted cart including a driving member arranged between the pair of fixed members and rotating the fixed members by driving the lower side in the up-and-down direction depending on whether the wheel connecting shaft is in contact.

6. In paragraph 5, The above fixed member and the above driving member, A coaxial two-wheeled electric motor-mounted cart with a sawtooth shape on the contacting surfaces.

7. In paragraph 1, The above handle part, A handle member extending upward from the above loading portion; and A coaxial two-wheeled electric motor-mounted cart that connects the loading part and the handle part and includes an angle-changing member that adjusts the angle of the handle member.

8. In paragraph 1, The above motor mounting part, A two-wheeled electric motor-mounted cart further comprising a panel member extending to the upper portion of the driving wheel to protect the rider from rotation of the combined driving wheel.

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