CN219821485U

CN219821485U - Electric driven handcart

Info

Publication number: CN219821485U
Application number: CN202321231880.4U
Authority: CN
Inventors: 颜秋波; 张文宇
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2023-01-18
Filing date: 2023-05-19
Publication date: 2023-10-13
Anticipated expiration: 2033-05-19
Also published as: CN219969717U; CN219969716U; CN219806849U; CN118804869A; CN220076454U; WO2024152579A1; CN220009806U; CN219821486U; CN220374551U; CN220009805U

Abstract

The utility model discloses an electric drive handcart, which comprises a handcart body, a plurality of wheels and an operating rod, wherein the handcart body comprises a foldable frame, a plurality of wheels arranged at the bottom of the frame, and the operating rod is hinged with the frame; the driving unit is used for driving at least one wheel to rotate, and the wheel comprises a pair of front wheels and a pair of rear wheels which are arranged at two ends of the frame in the length direction; a power supply unit for supplying power to the driving unit; the switch system is electrically connected with the power supply unit or the driving unit; and the driving unit is arranged between the two rear wheels and used for driving the rear wheels to rotate, and the projection of the driving unit along the length direction of the frame is positioned between the two front wheels. The electric drive handcart disclosed by the utility model improves the convenience and safety of use of users, and overcomes some defects of the existing handcart.

Description

Electric driven handcart

Technical Field

The utility model relates to the technical field of conveying devices and carrying devices, in particular to an electric drive trolley.

Background

The trolley is widely applied to production and life, is convenient to operate, has light dead weight and is very convenient to load and transport objects in short distances. The initial cart is pushed and pulled manually, and is very laborious to push or pull by means of two hands for heavier objects or for places with steep gradients, and then the small-sized cart driven by electric power is arranged, so that the burden of workers can be effectively reduced, and the transportation efficiency is improved.

With the continuous development of modern technology, people put forward higher requirements on the convenience of the electric cart. The existing electric cart drives the electric cart to move forward by arranging a motor and a battery, so that the purpose of saving labor is achieved; however, under the condition of power failure, the gear on the motor shaft of the electric cart is meshed with the gear on the wheel shaft of the driving wheel, so that the electric cart is naturally pulled by a user in the process of power failure, and a large resistance is formed, so that the electric cart cannot move forwards, and the user experience is seriously influenced.

For better storage, a plurality of foldable trolleys are appeared on the market, and a driving unit is usually arranged on the electric driving trolley, so that a certain difficulty is caused for folding storage, the driving unit is easy to collide, and the service life of the electric driving trolley is reduced.

Disclosure of Invention

The utility model aims to provide an electric drive handcart which can be folded and stored conveniently, and by arranging a motor and a clutch, a user can still drag the electric drive handcart to move forward through self-pulling force under the condition of controlling power failure of a switch system, so that the defects in the prior art are overcome.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electrically driven cart is provided, comprising a cart body including a foldable frame, a plurality of wheels provided at a bottom of the frame, and an operation lever hinged to the frame, the wheels including a pair of front wheels and a pair of rear wheels provided at both ends in a longitudinal direction of the frame; a driving unit including a motor and a clutch; the clutch is in transmission connection with at least one wheel through a transmission shaft; a power supply unit for supplying power to the driving unit; the switch system is arranged on the operating rod and is electrically connected with the power supply unit or the driving unit; when the switch system is started, the motor is electrified to enable the clutch to be in a meshed state, so that the wheels are driven to rotate; when the switch system is closed, the motor is powered off, so that the clutch is in a separation state, and a user drives the wheels to rotate by self-thrust.

Preferably, the driving unit is disposed between the two rear wheels for driving the rear wheels to rotate, and the projection of the driving unit along the length direction of the frame is disposed between the two front wheels.

As another preferred aspect, the projections of the two rear wheels along the length direction of the frame are located between the two front wheels.

As another preferred aspect, the projections of the two front wheels along the length direction of the frame are located between the two rear wheels.

As another preferred aspect, the pair of rear wheels are connected by the transmission rod, the driving unit is provided on the transmission rod, and the front wheels are lower than the transmission rod in height, so that the front wheels are adapted to be received under the transmission rod when the frame is in a folded state.

As another preferable configuration, the frame is configured such that, when folded, a front end surface of the driving unit does not protrude from a front end portion of the front wheel, and a rear end surface of the driving unit does not protrude from a rear end portion of the rear wheel.

As another preferable aspect, the frame is configured such that, when folded, the front and rear ends of the front wheel do not protrude from the front and rear ends of the rear wheel.

As another preference, the frame is configured such that when folded, the axis of rotation of the front wheel is parallel to the axis of rotation of the rear wheel.

As another preference, the frame is configured such that when folded, the front wheel and the rear wheel are on the same axis of rotation.

Further preferably, the power supply unit comprises a battery compartment, and the battery pack is adapted to be detachably disposed in the battery compartment.

Further preferably, the power supply unit is located at a front end of the frame to be away from the driving unit, and the operation lever is movably connected to the front end of the frame.

Further preferably, the frame includes a bottom plate and a side rail, and the power supply unit is disposed at an outer side surface of a front end of the side rail and near a top of the side rail.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The electrically driven trolley frame can be folded, is favorable for storage, and reduces the occupied space;

(2) The arrangement mode of the wheels after the electric drive trolley is folded can reduce the volume of the wheels as much as possible, and is convenient for storage;

(3) The driving unit of the electric driving handcart does not interfere with the wheels, and the front end surface and the rear end surface of the driving unit do not protrude out of the foremost end and the rearmost end of the wheels, so that the driving unit is protected from being damaged by collision;

(4) The electric drive trolley is provided with the detachable battery pack, the standby battery pack can be quickly replaced after the battery pack is discharged, and the trolley is not required to be moved to a position where a power supply is connected after being charged, so that the burden of a user is reduced;

drawings

FIG. 1 is a schematic view of an electrically driven cart according to an embodiment of the present utility model;

FIG. 2 is a right side view of an electrically driven cart structure according to an embodiment of the utility model;

FIG. 3 is a bottom view of an electrically driven cart structure according to one embodiment of the utility model;

FIG. 4 is a front view of an electrically driven cart structure according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing a folded state of an electrically driven cart according to an embodiment of the present utility model;

FIG. 6 is a left side view of an electrically driven cart in a collapsed condition in accordance with one embodiment of the present utility model;

FIG. 7 is a front view of an electrically driven cart in a collapsed condition in accordance with one embodiment of the present utility model;

FIG. 8 is a bottom view of an electrically driven cart in a collapsed condition in accordance with one embodiment of the present utility model;

FIG. 9 is a schematic view of a power unit of an electrically driven cart according to an embodiment of the utility model, wherein the battery pack and the protective cover are not shown;

FIG. 10 is a schematic view of an electrically driven cart power unit according to an embodiment of the present utility model, wherein the protective cover is not shown;

FIG. 11 is a schematic view of the handle end of an electrically driven cart in accordance with an embodiment of the utility model;

FIG. 12 is a schematic view of another angular configuration of an electrically driven cart according to an embodiment of the utility model;

FIG. 13 is a schematic view of a battery pack of an electrically driven cart according to an embodiment of the utility model;

in the figure: 1. a vehicle body; 11. a frame; 111. a side rail; 112. a bottom plate; 12. a wheel; 121. a front wheel; 122. a rear wheel; 123. a transmission rod; 13. an operation lever; 131. a handle end; 2. a driving unit; 3. a power supply unit; 30. a housing; 31. a first output interface; 32. a battery compartment; 33. a battery pack; 331. a power outlet; 332. a second output interface; 34. a power supply opening part; 35. a protective cover; 4. a switching system; 41. a first switch; 42. a second switch; 43. a third switch; 44. and a fourth switch.

Detailed Description

The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1 to 13, the present utility model provides an electrically driven cart, which comprises a cart body 1, a driving unit 2, a power supply unit 3, and a switching system 4, wherein the driving unit 2 is used for driving wheels 12 of the cart body 1 to rotate, so that the cart body 1 can advance or retreat under the assistance of the driving unit 2, the power supply unit 3 is used for supplying power to the driving unit 2, and the switching system 4 is electrically connected with the driving unit 2 and is used for controlling the operation of the driving unit 2.

The drive unit 2 comprises a motor and a clutch, which is in driving connection with at least one wheel 12 via a driving rod 123. When the switch system 4 is started, the motor is electrified to enable the clutch to be in a meshed state, so that the wheels 12 are driven to rotate; when the switch system 4 is turned off, the motor of the driving unit 2 is powered off, so that the clutch is in a disengaged state, and the user uses the self-thrust to drive the wheel 12 to rotate, so that the trolley advances.

The handcart that will rely on the manpower to stimulate changes electric drive, and the user only needs the advancing direction of control handcart when using, labour saving and time saving, the transportation of more convenient long distance and heavy object, the hillside that runs into also can easily deal with, has improved the use convenience.

As shown in fig. 2, the vehicle body 1 includes a frame 11, a wheel 12, and an operation lever 13, the frame 11 having a space for accommodating an object, the wheel 12 being provided at the bottom of the frame 11, the operation lever 13 being provided at one end of the frame 11. When the object carrying device is used, an object is placed inside the frame 11, and the operating rod 13 is pulled to drive the frame 11 to move, so that the object carrying purpose is achieved.

It should be noted that the vehicle body 1 may further include a fabric layer (not shown in the drawings) disposed on the frame 11, the accommodating space of the vehicle body 1 is defined by the frame 11 and the fabric layer, and the fabric layer is disposed to facilitate the improvement of the accommodating capacity of the vehicle body 1 while reducing the weight of the vehicle body 1, so that the object is not easy to fall in the fabric layer.

In some embodiments, the frame 11 is rectangular, is a foldable frame 11, and can be folded for storage after use, so that the occupied space of the electric cart is reduced.

In the embodiment shown in fig. 1 and 2, the frame 11 includes a side rail 111 and a bottom plate 112, the side rail 111 includes a front rail, a rear rail, a left rail and a right rail, the bottom plate 112 includes a front plate and a rear plate rotatably connected, the front rail is rotatably connected with the front plate, the rear rail is rotatably connected with the rear plate, the left rail and the right rail are disposed at both sides of the bottom plate 112, and both ends are connected with the front rail and the rear rail, respectively, the left rail and the right rail are adapted to be folded, and the front rail and the rear rail are not foldable.

When folding is needed, the front rail and the rear rail are close to each other, the connection parts of the front plate and the rear plate are rotated to be close to each other, and the side support rods of the left rail and the right rail are hinged to be close to each other, so that the frame 11 can be folded together.

It should be noted that the specific structure of the foldable frame 11 may be selected in many ways, and all the frames 11 that can be folded to achieve the volume reduction are within the scope of the present utility model.

In the embodiment shown in fig. 1 and 2, the wheel 12 includes a pair of front wheels 121 and a pair of rear wheels 122, the pair of front wheels 121 being disposed at a front end of the floor 112 at intervals, and the pair of rear wheels 122 being disposed at a rear end of the floor 112 at intervals.

In some preferred embodiments, the projections of the pair of front wheels 121 are located between the projections of the pair of rear wheels 122 along the length of the vehicle body 1. The staggered arrangement of the front wheels 121 and the rear wheels 122 is beneficial to preventing the wheels 12 from interfering with the driving unit 2 when the electrically driven handcart is folded, and avoiding collision of the driving unit 2. After the electric drive handcart is folded, the front wheel 121 of the electric drive handcart can be stored between the two rear wheels 122, so that the volume of the electric drive handcart after being folded is reduced, and the electric drive handcart is more favorable for storage.

In some embodiments, a pair of rear wheels 122 are connected by a transmission rod 123, and the driving unit 2 drives the transmission rod 123 to rotate so that the rear wheels 122 are rotationally advanced, and the connection manner of the transmission rod 123 and the rear wheels 122 is a prior art, and a description thereof is omitted herein.

In a preferred embodiment, the height of the front wheel 121 is lower than the height of the transmission rod 123, so that when the electrically driven trolley is in a folded state, the front wheel 121 can be stored under the transmission rod 123, and the storage volume of the electrically driven trolley is further reduced, and the occupation of space is reduced.

Further, when the electrically driven cart is in a folded state, the front wheels 121 can be accommodated under the transmission rods 123, and neither the front and rear ends of the front wheels 121 protrude from the front and rear ends of the rear wheels 122, so that the accommodation volume is reduced as much as possible.

More preferably, when the frame 11 is configured to be folded, the rotation axis of the front wheel 121 is parallel to the rotation axis of the rear wheel 122, or the front wheel 121 and the rear wheel 122 are on the same rotation axis.

The operation lever 13 may be provided at the front end of the frame 11 or may be provided at the rear end of the frame 11. In the embodiment shown in fig. 1 and 2, the operating lever 13 is provided at the front end of the frame 11, and the operating lever 13 is hinged with the front rail.

The operating lever 13 is hinged to the frame 11 so that the operating lever 13 can rotate between its initial position and a push-pull position.

The driving unit 2 is arranged between the front wheels 121 or between the rear wheels 122, and along the projection of the length direction of the vehicle body 1, the projection of the driving unit 2 is simultaneously positioned between the projections of the front wheels 121 and the rear wheels 122, so that the electric driving trolley is not interfered with the wheels 12 in the folding process, the driving unit 2 is prevented from being collided, and the use safety is improved.

In some embodiments, the driving unit 2 is disposed on the transmission rod 123, and the driving unit 2 drives the transmission rod 123 to rotate so that the rear wheel 122 rotates and advances, and the driving unit 2 and the transmission rod 123 are disposed in a manner of the prior art, which is omitted herein.

In some embodiments, when the frame 11 is in the folded state, the front end face of the drive unit 2 does not protrude from the front end of the front wheel 121, and the rear end face of the drive unit 2 does not protrude from the rear end of the rear wheel 122. By the arrangement, after the electric drive trolley is folded, the front end face and the rear end face of the drive unit 2 are not exposed out of the wheels 12, the drive unit 2 is prevented from being collided, and the service life of the electric drive trolley is prolonged.

The driving unit 2 and the power supply unit 3 are positioned on different sides of the frame 11, so that the driving unit 2 and the power supply unit 3 are prevented from interfering with each other, the vehicle body 1 can be balanced, and the design is more convenient.

The driving unit 2 and the power supply unit 3 are electrically connected through a connecting wire, and the connection mode is the prior art and is not described herein.

In some embodiments, the power supply unit 3 is disposed on the frame 11 on the same side as the operation lever 13, which is advantageous in shortening the wiring connection of the power supply unit 3 with the operation lever 13 and reducing the wiring length. In a preferred embodiment, the projection of the operation lever 13 on the front end surface of the side rail 111 is not coincident with the projection of the power supply unit 3, so as to reduce the influence of the arrangement of the power supply unit 3 on the operation of the operation lever 13.

In a preferred embodiment, the front of the wheel 12 protrudes from the frame 11, and the first vertical surface S is a tangential plane where a point at the front of the wheel 12 is a tangential point, that is, the first vertical surface S is a tangential plane to the front end of the front wheel 121 in the vertical direction. The front end surface of the power supply unit 3 does not protrude from the first vertical surface S, the front end surface of the initial position of the operation lever 13 does not protrude from the first vertical surface S, and the front end surface of the power supply unit 3 does not protrude from the front end surface of the operation lever 13. In this arrangement, when the front end surface of the electrically driven cart collides with a vertical plane, the front end surface of the wheel 12 becomes the collision surface, and the power supply unit 3 and the operation lever 13 are less affected.

As shown in fig. 12, the power supply unit 3 includes a power supply portion for supplying power, and a first output interface 31 electrically connected to the power supply portion, the first output interface 31 being provided on the vehicle body 1, and the external electric device being adapted to obtain electric power of the power supply portion through the first output interface 31. When a user uses the electric drive trolley to transport objects, the electric drive trolley can charge the objects at the same time, so that the electric drive trolley can transport some devices needing frequent charging more conveniently, or electric equipment is convenient to move when working. In addition, when outdoor activities, after the electric drive handcart is used for carrying goods, the first output interface 31 of the electric drive handcart can be used as a power supply to provide electric energy for other outdoor equipment, so that the outdoor activities are facilitated.

In some embodiments, the first output interface 31 is provided on the frame 11 or the lever 13, which is convenient for the user to find and use.

The first output interface 31 is preferably configured as a direct current interface (DC interface) for most external consumers.

Preferably, the first output interface 31 is a 3C interface, such as a USB interface, a Type-C interface, or the like.

As shown in fig. 9, 10, and 13, the housing 30 of the power supply unit 3 includes a battery compartment 32, and a battery pack 33 detachably provided in the battery compartment 32. The upper end surface of the housing 30 has an opening adapted to mount and dismount the battery pack 33. The battery compartment 32 is provided with a power interface that is electrically connected to a power outlet 331 on the battery pack 33 to enable the battery pack 33 to be connected to the electrical circuitry of the electrically driven cart for providing electrical power.

The power interface of the battery compartment 32 is provided at the bottom of the battery compartment 32 opposite to the opening of the housing 30 to facilitate easy installation and removal of the battery pack 33 in the battery compartment 32.

In some embodiments, the battery pack 33 is provided with a power output port 331 and a second output interface 332, where the power output port 331 is configured to be electrically connected to the power interface of the battery compartment 32 when the battery pack 33 is disposed in the battery compartment 32, so that the battery pack 33 supplies power to the driving unit 2, and the second output interface 332 is exposed at the opening of the housing 30. The second output interface 332 is adapted to supply power to external electrical devices, so that a user can use some small electrical devices when pulling the electrically-driven cart to move, thereby improving the convenience of using the electrically-driven cart.

The second output interface 332 includes at least one 3C interface, such as a USB interface, a Type-C interface, or the like. The 3C product refers to a common name of computers, communication products and consumer electronics products, such as computers, tablet computers, mobile phones or digital audio players. By providing the second output interface 332 in the battery pack 33, the user can charge the mobile phone during transportation; or in outdoor activities such as outdoor camping, the electric drive trolley is used for transporting objects, and after the objects are transported, entertainment equipment such as a mobile phone, a flat plate or an audio player can be connected through the second output interface 332, so that the electric drive trolley is more convenient for outdoor activities.

As shown in fig. 9 and 10, the housing 30 of the power supply unit 3 is further provided with a power-on portion 34, and the power-on portion 34 can be turned on by a key, so that the driving unit 2 is in a state capable of being started. The power-on portion 34 is provided, so that a user having a key can start the electrically-driven handcart, and to a certain extent, the electrically-driven handcart can be prevented from being started by other people at will, and particularly, children can be prevented from using the electrically-driven handcart without caretaking the person.

The power-on portion 34 is disposed on the housing 30 of the power supply unit 3, and the key insertion opening of the power-on portion 34 is located on the upper end surface of the housing 30, which is beneficial to the user to take the key and the battery pack 33 along with the use and the follow-up.

The power supply unit 3 further comprises a protective cover 35 which is connected with the shell 30 in an openable and closable manner, and the protective cover 35 is suitable for being covered on the upper end face of the shell 30.

The switching system 4 is electrically connected to the drive unit 2, the switching system 4 being adapted to emit the first electrical signal and the second electrical signal independently, and the drive unit 2 being adapted to start operation after receiving the first electrical signal and the second electrical signal.

The driving unit 2 is set to be that the starting condition is met after the first electric signal and the second electric signal are received, the starting condition of the driving unit 2 is additionally set, the probability of false starting is reduced, and the use safety is improved.

Specifically, the switching system 4 includes a first switch 41 configured to emit a first electric signal when operated by a user, and a second switch 42 configured to emit a second electric signal when the operation lever 13 is operated.

As shown in fig. 11, the operation lever 13 is provided with a handle end 131, a user can push and pull the vehicle body 1 by holding the handle end 131, and the first switch 41 is provided on the handle end 131 so that the user can operate the first switch 41 to transmit the first electric signal by holding the handle end 131.

The handle end 131 is further provided with a third switch 43 adjacent to the first switch 41, and the user can operate the first switch 41 and the third switch 43 simultaneously with one hand while holding the handle end 131.

When the electric drive handcart is used by a user, the stopping and starting of the handcart can be controlled by one hand, the other hand of the user is liberated, and when the electric drive handcart is used by the user for transportation, the other hand can perform operations such as calling or map guiding, and the operability and convenience of the electric drive handcart are improved.

In some embodiments, the handle end 131 is further provided with a fourth switch 44 for adjusting the speed of movement of the electrically driven cart. The motion speed of the electric drive handcart can be adjusted, so that a user can use the electric drive handcart more conveniently, the electric drive handcart can run rapidly if the electric drive handcart encounters a flat road without barriers, the motion speed needs to be reduced when the number of barriers or pedestrians is large and the road surface is uneven, the safety of the user is ensured, the electric drive handcart also encounters an ascending condition, the speed can be adjusted to be high, and the output power is increased to safely transport the ascending condition.

The electric drive trolley is provided with the detachable and separable battery pack 33, so that the battery pack 33 can be separated from the trolley body 1 to be charged independently, the electric drive trolley is prevented from being moved indoors during charging, the waste of manpower is reduced, and the time is saved; meanwhile, the standby battery pack 33 is conveniently used, and the battery pack 33 can conveniently supply power to other similar machines, so that the outdoor transportation and activities are greatly facilitated.

The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An electrically driven cart comprising

The vehicle body comprises a foldable frame, a plurality of wheels arranged at the bottom of the frame and an operation rod hinged with the frame, wherein the wheels comprise a pair of front wheels and a pair of rear wheels which are arranged at two ends of the frame in the length direction;

a driving unit including a motor and a clutch; the clutch is in transmission connection with at least one wheel through a transmission shaft;

a power supply unit for supplying power to the driving unit;

the switch system is arranged on the operating rod and is electrically connected with the power supply unit or the driving unit;

when the switch system is started, the motor is electrified to enable the clutch to be in a meshed state, so that the wheels are driven to rotate; when the switch system is closed, the motor is powered off, so that the clutch is in a separation state, and a user drives the wheels to rotate by self-thrust.

2. An electrically driven trolley as claimed in claim 1, wherein the drive unit is arranged between the rear wheels for driving the rear wheels to rotate, and wherein the projection of the drive unit in the length direction of the frame is located between the front wheels.

3. An electrically driven trolley according to claim 2, wherein the projections of the two rear wheels along the length of the frame are located between the two front wheels.

4. An electrically driven trolley according to claim 2, wherein the projections of the two front wheels along the length of the frame are located between the two rear wheels.

5. An electrically driven trolley as claimed in claim 4, wherein a pair of said rear wheels are connected by a transmission bar, said drive unit being provided on said transmission bar, and said front wheels being of a lower height than said transmission bar, whereby said front wheels are adapted to be received under said transmission bar when said frame is in a collapsed condition.

6. An electrically driven trolley according to any one of claims 1-5, wherein the frame is arranged such that, when folded, the front end face of the drive unit does not protrude from the front end of the front wheel and the rear end face of the drive unit does not protrude from the rear end of the rear wheel.

7. The electrically driven cart of claim 6, wherein the frame is configured such that when folded, neither the front nor rear ends of the front wheels protrude beyond the front and rear ends of the rear wheels.

8. The electrically driven cart of claim 6, wherein the frame is configured such that when folded, an axis of rotation of the front wheel is parallel to an axis of rotation of the rear wheel.

9. The electrically driven cart of claim 6, wherein the frame is configured such that when folded, the front wheel and the rear wheel are on the same axis of rotation.

10. Electrically driven trolley according to any of the claims 1-5, wherein the power supply unit comprises a battery compartment, the battery pack being adapted to be detachably arranged in the battery compartment.

11. An electrically driven trolley according to any one of claims 1 to 5, wherein the power supply unit is located at the front end of the frame remote from the drive unit, and the operating lever is movably connected to the front end of the frame.

12. An electrically driven trolley according to any one of claims 1 to 5, wherein the frame includes a floor and a side rail, and the power supply unit is provided on an outer side of a front end of the side rail, near a top of the side rail.