KR101961791B1 - Electric Carts - Google Patents

Abstract

The present invention provides an electric cart comprising: a base frame having an auxiliary wheel mounted on the front lower part thereof and having a plurality of main wheels mounted on the rear side thereof to be driven by a driving unit; a loading unit including loading frame hinge-coupled to the upper surface of the base frame and a vertical frame vertically coupled to the loading frame to support cargo loaded on the loading frame so as to control a tilt; a tilting driving unit coupling one end to the base frame and coupling the other end to the loading frame to tilt the loading unit in driving; a traveling operation unit disposed on the top of the vertical frame of the loading unit to input driving and user operation commands; and a control unit controlling operation of the driving unit and the tilting driving unit in accordance with the user operation command to control traveling of the carrier and a tilting angle of the loading unit. According to one embodiment of the present invention, the electric cart is able to be easily operated by a user due to convenience operation and a simple design, and the center of gravity is stably moved by a tilting function of the loading unit, thereby providing effects of enabling even a woman and an old person to easily use the electric cart, and realizing safety traveling. Moreover, the electric cart is traveled by enabling a user to get in an ergonomically designed riding unit, and the loading unit is folded and stored, thereby providing effect of minimizing user′s tiredness even in long time or distance traveling, and increasing spatial efficiency.

Description

Electric carts

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to an electric cart, and more particularly, to an electric cart which carries and transports goods in a wholesale market, a logistics facility, a factory, a mart,

BACKGROUND ART [0002] Generally, a cart is designed to be able to carry a load to a destination conveniently, and the structure thereof includes a body having a space for loading a load, a plurality of wheels installed at a lower portion of the body, And a handle disposed on the upper portion of the body for easily transmitting a pushing and pulling force to the body.

However, since the conventional cart is loaded and transported with manpower, there is a problem that it is difficult to use a woman who is weak in strength or a senior citizen because it requires a lot of force when carrying a heavy load.

In this regard, Korean Patent Laid-Open No. 10-2010-0041168 (entitled "Electric Hand Truck") discloses an article handling apparatus in which an article carrying table on which articles are loaded, a cart body which supports the article cart so that it can stand upright, A hand lever provided at an upper side of the cart body to receive a moving speed by adjusting a moving direction of the cart body; A driving unit provided at one side of the pair of wheels for transmitting the driving force to the wheels; And a control unit for controlling the driving force of the driving unit in accordance with the moving speed inputted through the hand lever.

However, the cart equipped with such a driving device has a disadvantage that it is difficult to operate the driving device unless it is an experienced driver because the driving is somewhat difficult, and the general versatility of the cart is low.

Further, there is a problem in that when the article is loaded on the cart with a heavy weight, much force is required to tilt the cart at a predetermined angle.

(Patent Document 0001) Korean Patent Publication No. 10-2010-0041168 (published on April 22, 2010)

(Patent Document 0002) Korean Patent Laid-Open No. 10-2017-0091602 (published on Aug. 20, 2017)

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems,

An object of the present invention is to provide a portable terminal that can be easily operated by a user and can be easily used by a woman and an elderly person and can be safely operated by moving a stable center of gravity by a tilting function of a loading part, The present invention also provides an electric cart which can minimize the fatigue of a user even when moving over a long distance, and can also increase the space efficiency by folding and holding the boarding portion.

In addition, the battery can be replaced, the battery can be replaced, the battery can be charged, or the battery can be charged even when it is in a detached state. The electric cart can increase the convenience and stability of driving operation through the anti- .

Another object of the present invention is to provide an electric cart which can expand the space of the loading section as necessary to allow a large volume of articles or a large number of articles to be stably transported, and to connect a bogie so as to easily tow a large load bogie.

According to an aspect of the present invention, there is provided an electric cart comprising: a base frame on which a plurality of main wheels mounted on a rear portion of a frame are mounted; A loading frame hinged to an upper surface of the base frame and a vertical frame coupled to the loading frame in a vertical direction to support the load placed on the loading frame, A tilting driving unit coupled at one end to the base frame and coupled at the other end to the loading frame to tilt the loading unit during driving; A driving operation unit provided at an upper end of the vertical frame of the loading unit to input operation and user operation commands; And a control unit controlling driving of the driving unit and the tilting driving unit according to the user operation command to control the operation of the carrier and the tilting angle of the loading unit.

The tilting driving unit includes a driving cylinder having one end coupled to one side of the base frame, a linear motor for driving the driving cylinder, one end being axially coupled to the rod of the driving cylinder and the other end being coupled And a second link member, one end of which is axially coupled to the rod of the driving cylinder and the other end of which is coupled to a lower portion of the stacking frame, so that when the driving cylinder is driven, And the loading section is tilted by an angle at which the second link member is opened.

In addition, a boarding unit detachably coupled to the base frame and having at least one or more wheels to enable a user to ride can be further provided.

Wherein the boarding portion includes a coupling portion detachably coupled to the base frame, a first footrest portion that is pivotally coupled to the coupling portion, and a second footrest portion that is foldably pin-joined to the first footrest portion, .

In addition, the vertical frame rear surface of the loading part is provided with a hook for fixing the folded boarding part, and the boarding part is formed by folding the first footing part and the second footing part, Structure.

In addition, the coupling portion may further include a rotation restricting member for restricting a rotation angle of the first foot portion, and the first foot portion and the second foot portion may be fixed to the unfolded state of the first foot portion and the second foot portion, And a lock lever for allowing the first and second footrests to be folded.

In addition, the boarding portion may include a coupling portion that is axially coupled to the rear of the base frame, a horizontal footing portion coupled to a distal end of the coupling portion, and a safety guide installed on both sides of the footing portion, And the foot plate is positioned at a lower position than the engaging portion and has a downward inclination angle so as to have a sense of stability of driving. In addition, a hanging portion for fixing the folded boarding portion is provided on the back surface of the vertical frame of the loading portion, and the boarding portion is rotated around the pin of the combining portion to be hooked to the hooking portion.

In addition, a bogie coupling part is further provided behind the boarding part to connect the bogie.

In addition, a battery seat for seating a battery is further provided on a rear surface of the vertical frame of the loading unit, and the battery is detachably coupled to the battery seat so as to be replaceable.

In addition, the operation control section includes an operation panel section for operating the operation mode or for inputting a user operation command, and a handle section provided at both sides of the operation panel section, wherein the handle section includes a grip section, An acceleration adjusting unit for adjusting the amount of the battery, and a battery remaining amount display unit.

Further, on both side surfaces of the stacking frame, there is further provided an expansion frame which can be extended to the inside and the outside of the stacking frame so as to extend the stacking space, and a shock-absorbing bumper .

According to the embodiment of the present invention, it is possible to easily operate the user with a simple operation and a simple design, so that it can be easily used by women and the elderly, and the stable center of gravity can be moved by the tilting function of the loading part, Since the user rides on the boarding section, it is possible to minimize the fatigue of the user even when the vehicle is traveling for a long time or a long distance, and the space efficiency can be improved by folding the boarding section.

In addition, the battery can be replaced, so that the charged battery can be used for replacement, or the battery can be charged even when the battery is mounted or disconnected, and the convenience and stability of the operation can be increased through the anti-grip type accelerator .

In addition, it is possible to expand the space of the loading part according to need, thereby making it possible to stably convey a large amount of goods or to transport a large amount of goods stably, and to connect a bogie to easily pull a large load bogie.

In addition, a shock-absorbing bumper is provided at the front of the stacking frame to safely protect the user and the load from shocks when shocked against the outside, and to modernize the mobile equipment through low noise, high driving force, and light weight.

1 is a perspective view of a motor-operated cart according to an embodiment of the present invention, viewed from the front;
BACKGROUND OF THE INVENTION Field of the Invention [0001]
FIG. 3 is a side view showing an electric cart according to an embodiment of the present invention. FIG.
4 is a perspective view illustrating a state in which the loading unit is tilted at a predetermined angle in a powered cart according to an embodiment of the present invention.
5 (a) and 5 (b) are enlarged views for explaining the operation of the tilting drive unit in the state of FIG. 4;
FIG. 6 is a side view showing a folded state of an embodiment of a boarding portion in a powered cart according to an embodiment of the present invention; FIG.
FIG. 7 is a perspective view showing another embodiment of a boarding portion in an electric cart according to an embodiment of the present invention; FIG.
FIG. 8 is a side view showing the folded state of the boarding portion shown in FIG. 7; FIG.
9 is a perspective view showing an expanded state of an expansion frame provided in a loading frame in an electric cart according to an embodiment of the present invention.
10 is a side view showing an embodiment in which a truck is connected to a rear portion of a boarding portion in an electric cart according to an embodiment of the present invention.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. Hereinafter, an electric cart according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. For purposes of this specification, like reference numerals in the drawings denote like elements unless otherwise indicated.

1 to 3, a description will be made of a configuration of a power-driven cart according to an embodiment of the present invention, and an operation of a tilting and tilting drive unit of the electric cart will be described with reference to FIGS. 4 and 5, The folded state of the boarding portion will be described with reference to Fig. Another embodiment of the boarding section will be described with reference to FIGS. 7 and 8, and the structure of the extension frame for extending the space of the stacking frame will be described with reference to FIG. 9. Referring to FIG. 10, An embodiment in which a truck can be connected to the rear of the boarding section will be described.

1 to 3, the electric cart according to an embodiment of the present invention includes a base frame 100, a loading unit 200, a tilting driving unit 300, a driving operation unit 400, a control unit (not shown) .

First, a plurality of reinforcing bars are connected between horizontal bars provided on both sides of the base frame 100 so as to be spaced apart from each other by a predetermined distance to form a horizontal frame with the ground surface, and auxiliary wheels 110 And a plurality of main wheels 120 driven by the driving unit 130 are mounted on both sides of the rear of the frame. Here, the driving unit 130 that drives the main wheel 120 uses a transaxle motor integrated type. Transaxle motors can achieve low noise, high driving force, light weight, area reduction, and minimum turning radius. In addition, it is also possible to control the operation using a programmable microcontroller (MCU) and realize control enhancement using an electronic device such as Photo MOS for preventing malfunction.

On the upper surface of the base frame 100, a loading unit 200 for loading cargo is hinged.

The loading unit 200 is integrally provided with a loading frame 210 that is horizontal with the base frame 100 and a vertical frame 220 that is vertically installed on one side of the loading frame to support the loaded load.

A tilting driving unit 300 is mounted between the horizontal bars of the base frame 100 so that one end thereof is coupled to the base frame 100 and the other end thereof is coupled to the loading frame 210 to tilt the loading unit 200 .

4 and 5, the tilting driving unit 300 includes a driving cylinder 310 having one end coupled to a horizontal bar on one side of the base frame 100, and a driving cylinder 310 having one end axially coupled to the rod of the driving cylinder 310, A first link member 320 coupled to the other horizontal bar of the base frame 100 and a second link member 320 having one end shaft-coupled to the rod of the driving cylinder 310 and the other end coupled to the lower end of the loading frame 210, Member 330 as shown in FIG. A high-load linear motor 340 for driving the cylinder is connected to the drive cylinder 310.

The tilting drive unit 300 is rotated by the angle of the first link member 320 and the second link member 330 about the axis when the linear motor 340 is driven to linearly move the drive cylinder 310, 200, and the loading section 200 is rotated about an axis coupled with the base frame 100 and tilted at an optimum angle to stably support the load.

The operation unit 400 is provided at the upper end of the vertical frame 220 of the loading unit 200 to input operation and user operation commands.

The operation control unit 400 includes an operation panel unit 410 provided at the upper center of the vertical frame 220 to operate operation modes such as forward, backward, manual, and automatic, or to input a user operation command, And a handle portion 420.

The handle portion 420 includes a grip portion 421 which can be grasped by a user by hand, an acceleration adjusting portion 422 for acceleration adjustment, and a half grip acceleration portion including a remaining battery amount display portion 423, And is designed to be ergonomically designed so that women and the elderly can easily operate.

A control unit (not shown) controls driving of the driving unit 130 and the tilting driving unit 300 according to a user operation command input to the driving control unit, thereby controlling the operation of the carrier and the tilting angle of the loading unit.

In addition, at least one wheel 501 is provided behind the base frame 100 to detachably mount a passenger 500 on which the user can ride.

2, a fixing part 140 for fixing the boarding part 500 is provided at the rear of the base frame 100, and the boarding part 500 is fixed to the fixing part 140 of the base frame 100 A first pedestal 520 which is pivotally coupled to the coupling part 510 in a pin-like manner and a second pedestal part 520 which is pin-coupled to the first pedestal part 520, (530).

The coupling part 510 of the boarding part is further provided with a rotation restriction preventing member (not shown) for limiting the rotation angle of the first footrest part 520. The rotation restricting member serves to increase the safety of the boarding unit 500 by limiting the maximum left / right rotation angle of the first footrest 520.

The first footrest part 520 and the second footrest part 530 are fixed to an unfolded state of the first footrest part 520 and the second footrest part 530, A lock lever 540 is provided to allow the foot portion 530 to be folded. That is, when the lock lever 540 is locked, the first and second footrests 50 and 530 are connected to each other to maintain the unfolded state. When the lock lever 540 is unlocked, And the second footrest part 530 can be folded.

A hook 230 is provided on the rear surface of the vertical frame 220 of the loading unit 200 to fix the folded loading unit 500.

The first footrest 520 and the second footrest 530 of the boarding part 500 are folded as shown in FIG. 6 and then the pins of the jointing part 510 are rotated about the pins, So that space efficiency in storage can be increased.

Figs. 7 and 8 show another embodiment of the boarding section. Fig.

7, another embodiment of the boarding unit 500 includes a coupling unit 510 that is axially coupled to the rear of the base frame 100, and at least one wheel 501 coupled at the coupling end 510 to the coupling unit 510, And a safety guide 560 that is installed on both sides of the footrest 550. The safety foot 560 is installed on both sides of the footrest 550,

At this time, the coupling part 510 is inclined downward, and the horizontal foot part 550 is coupled to the lower end part of the end of the coupling part 510 so that the horizontal foot part 550 is positioned lower than the coupling part 510 . That is, the height of the footrest portion 550 is lowered to provide a sense of stability during operation.

In addition, as shown in FIG. 8, the boarding part 500 is rotated about the pin of the coupling part 510 to be fixed to the coupling part 230 of the loading part, thereby improving space efficiency in storage.

In addition, since the user moves on a ride-on part when the cart is operated, fatigue of the user can be minimized even when the vehicle is traveling for a long time or when the vehicle is traveling a long distance.

In addition, a battery mounting part 600 for mounting the battery 610 is further provided on a rear surface of the vertical frame 220 of the loading part 200.

The battery 610 may be simply mounted on the battery mounting part 600 or may be detachably coupled to the battery mounting part 600 to facilitate drawing and mounting.

In addition, the battery 610 that is seated in the battery mounting part 600 can be self-charged and replaced, and thus can be used continuously. In other words, the battery 610 can be replaced, and a pre-charged battery can be used to replace the battery.

Also, the battery 610 may be provided in a plurality of units so as to be individually detachable or detachable, and may be provided so as to be easily replaceable for the elderly or female by reducing the weight by individual detachment and attachment.

As shown in FIG. 9, an extension frame 700 is further provided on both sides of the stacking frame 210 to be connected to the inside and outside of the stacking frame 210 so as to be drawn out and pulled in.

The extension frame 700 is connected to the bar 710 which is drawn into the interior of the stacking frame 210 and is located at both side walls of the stacking frame 210. The extension frame 700 is pulled outward to pull out the bar 710 The loading space can be extended to both sides of the loading frame 210. [ That is, many items can be stably stacked or bulky loads can be safely transported.

Further, a shock-absorbing bumper 800 for absorbing impact is further provided in front of the stacking frame 210. [ The shock-absorbing bumper 800 absorbs shocks caused by a collision with the outside and functions to safely protect the load and the user.

10, a bogie coupling portion 900 is provided at the rear of the boarding portion 500 to connect the bogie 910 to the bogie coupling portion 900, So that a large-capacity load carriage can be easily pulled. For example, when moving many goods, such as wholesale markets or factories, it is easy to pull the load carriage to provide convenience of work.

As described above, since the present invention can be easily used by women and the elderly, the stable center of gravity can be shifted by the tilting function of the loading section, and the user can ride on the ergonomically designed boarding section, It is possible not only to minimize the fatigue of the user while moving, but also to increase the space efficiency by folding and storing the boarding portion.

In addition, the battery can be replaced, so that the charged battery can be used for replacement. Also, the battery can be charged in a state in which the battery is mounted or separated, and the convenience and stability of driving operation can be increased through the half-grip type accelerator.

In addition, if necessary, the space of the loading part can be expanded to allow a bulky object or a large number of objects to be stably transported, and a large-capacity loading bogie can be easily pulled by connecting the bogie.

In addition, a shock-absorbing bumper is provided in front of the stacking frame to safely protect the user and the load from shocks when the vehicle is impacted with the outside, and modernization of the mobile equipment can be achieved through low noise, high driving force, and light weight.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims, And equivalents may be resorted to as falling within the scope of the invention.

100: Base frame 110: Auxiliary wheels
120: main wheel 130:
140: Fixing portion 200:
210: stacking frame 220: vertical frame
230: hook portion 300: tilting driving portion
310: drive cylinder 320: first link member
330: second link member 340: linear motor
400: Operation control part 410: Operation panel part
420: handle portion 421: grip portion
422: Acceleration control unit 423: Battery remaining amount display unit
500: boarding part 510:
520: first footrest portion 530: second footrest portion
540: Lock lever 600: Battery mount part
610: Battery 700: Expansion frame
710: Bar 800: Shock Absorber Bumper
900: Balance coupling portion 910: Balance

Claims (14)

A base frame on which a plurality of main wheels mounted on the rear of the frame are mounted; A loading frame hinged to an upper surface of the base frame and a vertical frame coupled to the loading frame in a vertical direction to support the load placed on the loading frame, A tilting driving unit coupled at one end to the base frame and coupled at the other end to the loading frame to tilt the loading unit during driving; A driving operation unit provided at an upper end of the vertical frame of the loading unit to input operation and user operation commands; And a control unit for controlling the driving of the driving unit and the tilting driving unit according to the user operation command to control the operation of the carrier and the tilting angle of the loading unit,
The tilting driving unit includes a driving cylinder having one end coupled to one side of the base frame, a linear motor for driving the driving cylinder, and a tilting driving unit having one end axially coupled to the rod of the driving cylinder and the other end coupled to the other side of the base frame. 1 link member, and a second link member, one end of which is axially coupled to the rod of the drive cylinder and the other end of which is coupled to a lower portion of the stacking frame, so that, when the drive cylinder is driven, And the loading section is tilted by an angle at which the link member is opened. delete The method according to claim 1,
Further comprising a boarding portion detachably coupled to the rear of the base frame, the boarding portion being mountable by a user with at least one wheel. The method of claim 3,
Wherein the boarding portion includes a coupling portion detachably coupled to the base frame, a first footrest portion that is pivotally coupled to the coupling portion, and a second footrest portion that is foldably pin-joined to the first footrest portion, Wherein the electric motor is a motor. 5. The method of claim 4,
Wherein a hook portion capable of fixing the folded boarding portion is provided on the back surface of the vertical frame of the loading portion,
Wherein the boarding portion has a structure in which the first footrest portion and the second footrest portion are folded and rotated about the pin of the engaging portion so as to be engaged with the engaging portion. delete 5. The method of claim 4,
The first footrest portion or the second footrest portion is further provided with a lock lever for fixing the unfolded state of the first footrest portion and the second footrest portion and allowing folding of the first footrest portion and the second footstep portion, Electric carts. The method of claim 3,
And a safety guide which is installed on both sides of the foot plate, wherein the engaging portion includes a horizontal footrest portion and a horizontal footrest portion, the horizontal footrest portion being coupled to a distal end of the coupling portion, And a downward inclination angle so as to provide a sense of stability in the driving position. 9. The method of claim 8,
Wherein a hook portion capable of fixing the folded boarding portion is provided on the back surface of the vertical frame of the loading portion,
Wherein the boarding portion is rotated around a pin of the engaging portion to engage with the engaging portion. The method of claim 3,
And a bogie engaging portion capable of connecting a bogie is further provided at the rear of the boarding portion. The method according to claim 1,
Further comprising a battery mounting part for mounting a battery on a rear surface of the vertical frame of the loading part, wherein the battery is detachably coupled to the battery mounting part so as to be replaceable. The method according to claim 1,
Wherein the operation control section includes an operation panel section for operating the operation mode or for inputting a user operation command, and a handle section provided on both sides of the operation panel section,
Wherein the handle portion comprises a grip portion that a user can grasp by hand, an acceleration adjusting portion for acceleration adjustment, and a remaining battery amount display portion. The method according to claim 1,
Wherein an expansion frame is further provided on both sides of the stacking frame so as to be extended and extended to the inside and outside of the stacking frame so as to expand the stacking space. The method according to claim 1,
And a shock-absorbing bumper for absorbing impact is further provided in front of the stacking frame.

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