Electric drive device and an electric suitcase

Abstract

The present application relates to the field of suitcases, and discloses an electric drive device and an electric suitcase. The electric drive device comprises a box body, a steering rod arranged in the box body at the upper part thereof, a driving rod and a driving wheel that are arranged in the box body at the lower part thereof, and a motor assembly used for driving the steering rod and the driving rod to extend and retract up and down. In a first state, the motor assembly controls the steering rod to extend upwards, and controls the driving rod and the driving wheel to extend downwards out of the box body, and in a second state, the motor assembly controls the steering rod to retract downwards, and controls the driving rod and the driving wheel to retract upwards into the box body. In the first state, the electric drive device, as an independent device, can be externally connected to the suitcase for movement, and in the second state, the electric drive device can minimize the volume, so that the electric drive device can be conveniently carried or placed inside the suitcase for storage.

Description

Electric driving device and electric luggage

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202411772939.X, filed on December 4, 2024, and entitled "Electric driving device and electric luggage", and the Chinese patent application No. 202410966681.0, filed on July 18, 2024, and entitled "Electric driving device and electric luggage", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the field of luggage, in particular to an electric driving device and an electric luggage. BACKGROUND

[0004] Luggage, also known as travel case or trolley case, is a box carried when going out to place articles, such as clothes and daily necessities needed on a journey. Electric luggage is improved on the basis of traditional luggage, so that it can be ridden to reduce the burden of carrying luggage. However, the inventor found in the research process of the present application that the electric driving device of the existing electric luggage is integrally assembled on the luggage, and thus cannot be applied to other luggage. Therefore, it is necessary to design an electric driving device and an electric luggage. SUMMARY

[0005] The present application provides an electric driving device and an electric luggage to solve the problems in the background art.

[0006] An electric driving device comprises a box body, a steering rod arranged at an upper part in the box body, a driving rod and a driving wheel arranged at a lower part in the box body, and a motor assembly for driving the steering rod and the driving rod to stretch out and retract, wherein the motor assembly comprises a double-output-shaft motor, the double-output-shaft motor is arranged vertically, an output end at an upper end of the double-output-shaft motor is threadedly connected with the steering rod, an output end at a lower end of the double-output-shaft motor is threadedly connected with the driving rod, a sliding sleeve is sleeved on an outer periphery of the double-output-shaft motor, the steering rod and the driving rod are respectively inserted into two ends of the sliding sleeve and can slide along a length direction of the sliding sleeve, limit protrusions are arranged on outer walls of the steering rod and the driving rod, and limit sliding grooves are arranged on an inner wall of the sliding sleeve and are matched with the limit protrusions.

[0007] Optionally, a rotating connecting block is arranged at a bottom of the steering rod and a top of the driving rod, a lead screw with an external thread is arranged at each end output shaft of the double-output-shaft motor, an internal thread matched with the external thread is arranged in the rotating connecting block, and the steering rod and the driving rod are threadedly connected with the double-output-shaft motor through the rotating connecting block.

[0008] Optionally, the outer threads of the lead screws of the two output shafts of the double-output shaft motor are in opposite directions.

[0009] Optionally, the inner wall of the box body is provided with a bearing seat, and the sliding sleeve is mounted on the bearing seat and rotationally connected with the box body.

[0010] Optionally, the electric driving device further comprises a controller and a connecting assembly for detachable connection with an external luggage case, the motor assembly is connected with the controller, and the electric driving device is connected with the external luggage case through the connecting assembly and drives the external luggage case to move.

[0011] An electric driving device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to stretch out and retract, the motor assembly comprises a sliding sleeve, a driving motor and a gear box arranged on the sliding sleeve, the steering rod and the driving rod are respectively inserted into two ends of the sliding sleeve and can slide along the length direction of the sliding sleeve, the outer wall of the steering rod and the driving rod is respectively provided with a limiting protruding rib, the inner wall of the sliding sleeve is provided with a limiting sliding groove matched with the limiting protruding rib, the sliding sleeve is provided with lead screws respectively threadedly connected with the steering rod and the driving rod, the output end of the driving motor extends into the gear box and is connected with a first bevel gear, the end portion of the lead screw is provided with a second bevel gear matched with the first bevel gear, and the driving motor is connected with the lead screw through the first bevel gear and the second bevel gear.

[0012] Optionally, the bottom of the steering rod and the top of the driving rod are respectively provided with a rotating connecting block, the outer periphery of the lead screw is provided with an outer thread, and the rotating connecting block is provided with an inner thread matched with the outer thread, and the steering rod and the driving rod are threadedly connected with the lead screw through the rotating connecting block.

[0013] Optionally, the inner wall of the box body is provided with a bearing seat, and the sliding sleeve is mounted on the bearing seat and rotationally connected with the box body.

[0014] Optionally, the electric driving device further comprises a controller and a connecting assembly for detachable connection with an external luggage case, the motor assembly is connected with the controller, and the electric driving device is connected with the external luggage case through the connecting assembly and drives the external luggage case to move.

[0015] The utility model provides an electric drive device, including box body, the steering lever of setting in the upper portion in the box body, the drive rod and drive wheel of setting in the lower portion in the box body, the motor assembly for driving the up and down telescopic of steering lever and drive rod, the motor assembly includes first electric push rod and second electric push rod, the base of first electric push rod installs in the bottom in the box body, the output shaft of first electric push rod is upwards and is connected with steering lever through connecting piece, the base of second electric push rod installs in the top in the box body, the output shaft of second electric push rod is downwards and is connected with drive rod through connecting piece.

[0016] Optionally, the connecting piece is provided with a bearing seat, and the steering lever and the drive rod are both mounted on the bearing seat, the drive rod is inserted into the steering lever and can slide along the length direction of the steering lever.

[0017] Optionally, the electric drive device further comprises a controller and a connecting assembly for detachable connection with an external luggage case, the motor assembly is connected with the controller, and the electric drive device is connected with the external luggage case through the connecting assembly and drives the external luggage case to move.

[0018] The utility model provides an electric drive device, including box body, the steering lever of setting in the upper portion in the box body, the drive rod and drive wheel of setting in the lower portion in the box body, the motor assembly for driving the up and down telescopic of steering lever and drive rod, the motor assembly includes the drive motor of fixing in the inner wall of box body, the drive gear of installing in the output end of drive motor, the first rack of rotation connection with steering lever, the second rack of rotation connection with drive rod, the first rack and second rack are arranged in the both sides of drive gear and are engaged with drive gear.

[0019] Optionally, the electric drive device further comprises a controller and a connecting assembly for detachable connection with an external luggage case, the motor assembly is connected with the controller, and the electric drive device is connected with the external luggage case through the connecting assembly and drives the external luggage case to move.

[0020] The utility model provides an electric drive device, including box body, the steering lever of setting in the upper portion in the box body, the drive rod and drive wheel of setting in the lower portion in the box body, the motor assembly for driving the up and down telescopic of steering lever and drive rod, the motor assembly includes the drive motor, the scissor type telescopic connecting rod of being connected with the output shaft of drive motor, one end of scissor type telescopic connecting rod is connected with steering lever, and the other end is connected with drive rod.

[0021] Optionally, the inner wall of the box body is provided with an arc-shaped rotating groove, the back of the drive motor is provided with an arc-shaped rotating plate matched with the arc-shaped rotating groove, the sidewall of the arc-shaped rotating groove is provided with an arc-shaped waist hole, the arc-shaped rotating plate is provided with a rotating positioning rod matched with the arc-shaped waist hole, the arc-shaped rotating plate is installed in the arc-shaped rotating groove, and the rotating positioning rod is located in the arc-shaped waist hole.

[0022] Optionally, the electric drive device further comprises a controller and a connecting assembly for detachable connection with the external luggage, the motor assembly is connected with the controller, and the electric drive device is connected with the external luggage through the connecting assembly and drives the external luggage to move.

[0023] An electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a drive rod and a drive wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the drive rod to stretch out and retract, the motor assembly comprises a drive motor fixed to an inner wall of the box body, a first main gear installed at an output end of the drive motor, a second main gear in transmission connection with the output end of the drive motor, a first rack in connection with the steering rod, and a second rack in connection with the drive rod, the first main gear is in meshing connection with the first rack, and the second main gear is in meshing connection with the second rack.

[0024] Optionally, a plurality of transmission gears are in meshing connection between the first main gear and the first rack, and the number of the transmission gears is even.

[0025] Optionally, the electric drive device further comprises a controller and a connecting assembly for detachable connection with the external luggage, the motor assembly is connected with the controller, and the electric drive device is connected with the external luggage through the connecting assembly and drives the external luggage to move.

[0026] Optionally, an electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a drive rod and a drive wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the drive rod to stretch out and retract, the motor assembly comprises a drive motor fixed to an inner wall of the box body, a first transmission screw in connection with the steering rod, and a second transmission screw in connection with the drive rod, the first transmission screw and the second transmission screw are in transmission connection, and an output end of the drive motor is connected with the first transmission screw or the second transmission screw.

[0027] Optionally, the motor assembly further comprises an upper seat body, a lower seat body, and a sliding rod arranged between the upper seat body and the lower seat body, the steering rod and the drive rod are both provided with sliding blocks slidingly installed on the sliding rod.

[0028] Optionally, the electric drive device further comprises a controller and a connecting assembly for detachable connection with the external luggage, the motor assembly is connected with the controller, and the electric drive device is connected with the external luggage through the connecting assembly and drives the external luggage to move.

[0029] An electric luggage comprises the electric drive device and a luggage main body, the electric drive device is detachably connected with the luggage main body.

[0030] Optionally, four ends of the bottom of the luggage body are provided with wheels, and the wheels on the side of the bottom of the luggage body close to the electric drive device are universal wheels, the universal wheels are rotationally connected with the luggage body, and the universal wheels have a first state of contacting the ground and a second state of being suspended relative to the ground.

[0031] From the above technical solution, the electric drive device provided by the application has a first state in which the steering rod extends upward, the driving rod and the driving wheel extend downward outside the box body, and in the first state, the electric drive device can be externally connected with a luggage to move, and the electric drive device also has a second state in which the steering rod is retracted downward, the driving rod and the driving wheel are retracted upward in the box body, and in the second state, the electric drive device can be maximally reduced in size, so that the electric drive device is convenient to carry or stored in the luggage. BRIEF DESCRIPTION OF DRAWINGS

[0032] Fig. 1 is a side view of a first electric drive device provided by the application;

[0033] Fig. 2 is a perspective view of the first electric drive device provided by the application;

[0034] Fig. 3 is a side view of the first electric drive device provided by the application in a retracted state;

[0035] Fig. 4 is a position diagram of a controller;

[0036] Fig. 5 is a schematic diagram of an internal structure of the first electric drive device provided by the application;

[0037] Fig. 6 is a schematic diagram of a sliding pipe sleeve in the first electric drive device provided by the application;

[0038] Fig. 7 is a bottom perspective view of a steering rod in the first electric drive device provided by the application;

[0039] Fig. 8 is a perspective view of a driving wheel and a driving rod in the first electric drive device provided by the application;

[0040] Fig. 9 is a schematic diagram of a double-output-shaft motor in the first electric drive device provided by the application;

[0041] Fig. 10 is a connection diagram of the steering rod, the double-output-shaft motor and the driving rod in the first electric drive device provided by the application;

[0042] Fig. 11 is a schematic diagram of a connecting assembly in the first electric drive device provided by the application;

[0043] Fig. 12 is a connection diagram of an electromagnetic lock and a sliding positioning seat in the first electric drive device provided by the application;

[0044] Fig. 13 is a schematic view of the connection between the positioning tip and the elastic buckle in the first electric drive device provided by the present application;

[0045] Fig. 14 is a perspective view of the second electric drive device provided by the present application;

[0046] Fig. 15 is a perspective view of the second electric drive device provided by the present application in a retracted state;

[0047] Fig. 16 is a schematic view of the internal structure of the second electric drive device provided by the present application;

[0048] Fig. 17 is a schematic view of the connection between the steering rod, the drive motor and the drive rod in the second electric drive device provided by the present application;

[0049] Fig. 18 is a schematic view of the internal structure of the gear box in the second electric drive device provided by the present application;

[0050] Fig. 19 is a schematic view of the connection between the first bevel gear and the lead screw in the second electric drive device provided by the present application;

[0051] Fig. 20 is a perspective view of the bottom of the steering rod in the second electric drive device provided by the present application;

[0052] Fig. 21 is a perspective view of the drive wheel and the drive rod in the second electric drive device provided by the present application;

[0053] Fig. 22 is a schematic view of the internal structure of the third electric drive device provided by the present application;

[0054] Fig. 23 is a schematic view of the connection between the first electric push rod, the second electric push rod, the steering rod and the drive rod in the third electric drive device provided by the present application;

[0055] Fig. 24 is a schematic view of the connection between the first electric push rod and the steering rod in the third electric drive device provided by the present application;

[0056] Fig. 25 is a schematic view of the connection between the second electric push rod and the drive rod in the third electric drive device provided by the present application;

[0057] Fig. 26 is a schematic view of the internal structure of the fourth electric drive device provided by the present application;

[0058] Fig. 27 is a schematic view of the connection between the first rack, the second rack, the steering rod and the drive rod in the fourth electric drive device provided by the present application;

[0059] Fig. 28 is a schematic view of the internal structure of the fifth electric drive device provided by the present application;

[0060] Fig. 29 is a schematic view of the internal structure of the box body in the fifth electric drive device provided by the present application;

[0061] Fig. 30 is a schematic view of the connection of the scissors-type telescopic link, the steering rod and the driving rod in the fifth electric driving device provided by the present application;

[0062] Fig. 31 is a perspective view of the sixth electric driving device provided by the present application;

[0063] Fig. 32 is a schematic view of the internal structure of the sixth electric driving device provided by the present application;

[0064] Fig. 33 is a perspective view of the steering rod and the first rack in the sixth electric driving device provided by the present application;

[0065] Fig. 34 is a perspective view of the driving rod and the second rack in the sixth electric driving device provided by the present application;

[0066] Fig. 35 is a side view of the driving motor and the first main gear and the second main gear in the sixth electric driving device provided by the present application;

[0067] Fig. 36 is a perspective view of the driving motor and the first main gear and the second main gear in the sixth electric driving device provided by the present application;

[0068] Fig. 37 is a perspective view of the connection of the first rack, the second rack and the guide slide rod in the sixth electric driving device provided by the present application;

[0069] Fig. 38 is a perspective view of the connection assembly in the sixth electric driving device provided by the present application;

[0070] Fig. 39 is a schematic view of the position of the locking member and the torsion spring in the sixth electric driving device provided by the present application;

[0071] Fig. 40 is a perspective view of the connection block in the sixth electric driving device provided by the present application;

[0072] Fig. 41 is a perspective view of the seventh electric driving device provided by the present application;

[0073] Fig. 42 is a schematic view of the internal structure of the seventh electric driving device provided by the present application;

[0074] Fig. 43 is a perspective view of the connection of the steering rod, the driving motor and the driving rod in the seventh electric driving device provided by the present application;

[0075] Fig. 44 is a schematic view of the connection of the first transmission screw and the second transmission screw in the seventh electric driving device provided by the present application;

[0076] Fig. 45 is a schematic view of the electric luggage provided by the present application;

[0077] Fig. 46 is a perspective view of the luggage body in the electric luggage provided by the present application;

[0078] Figure 47 is a schematic view of the electrically driven luggage provided by the present application, showing the electric drive device placed inside the luggage body;

[0079] Figure 48 is a schematic view of the electrically driven luggage provided by the present application, showing the connection between the drive motor and the universal wheel;

[0080] Figure 49 is a schematic view of the electrically driven luggage provided by the present application, showing the universal wheel.

[0081] Wherein: 10 - box body, 101 - controller, 102 - power switch, 103 - control switch, 104 - battery, 105 - battery slot, 106 - bearing seat, 107 - arc-shaped rotating groove, 108 - arc-shaped waist hole, 109 - sliding seat, 110 - electromagnet, 111 - connecting slot, 112 - connecting groove, 113 - locking piece, 114 - handle, 115 - locking end, 116 - first pressing end, 118 - control end, 119 - second pressing end, 120 - connecting block, 121 - locking groove, 122 - handle, 123 - handle groove, 20 - steering rod, 201 - steering handle, 202 - handle groove, 203 - control part, 30 - drive rod, 301 - wheel fork, 302 - limiting protrusion, 303 - rotating connecting block, 304 - limiting plane, 40 - drive wheel, 50 - double-output shaft motor, 501 - sliding tube sleeve, 502 - limiting sliding groove, 503 - lead screw, 504 - drive motor, 505 - gear box, 506 - first bevel gear, 507 - second bevel gear, 508 - first electric push rod, 509 - second electric push rod, 510 - connecting piece, 511 - drive gear, 512 - first rack, 513 - second rack, 514 - connecting rod, 515 - scissor-type telescopic connecting rod, 516 - arc-shaped rotating plate, 517 - rotating positioning piece, 518 - first main gear, 519 - second main gear, 520 - transmission belt, 521 - mounting plate, 522 - guide sliding rod, 523 - transmission gear, 524 - sub-transmission gear, 525 - first transmission screw, 526 - second transmission screw, 527 - upper seat body, 528 - lower seat body, 529 - sliding rod, 530 - sliding block, 531 - connecting gear, 60 - electromagnetic lock, 601 - sliding positioning seat, 602 - positioning pin, 603 - pressing piece, 604 - first sliding inclined surface, 605 - elastic piece, 606 - second sliding inclined surface, 607 - elastic buckle, 608 - annular base, 609 - elastic claw rod, 610 - first buckle, 611 - first stop block, 612 - second stop block, 70 - luggage body, 701 - wheel, 702 - tensioning wheel, 703 - guide wheel, 704 - mounting seat, 705 - torsional spring, 706 - pull rope, 707 - connecting socket, 708 - connecting hole, 709 - magnetic attraction block, 710 - electrical connecting piece. DETAILED DESCRIPTION

[0082] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings, but are not intended to limit the scope of protection of the present application. The terms "front", "back", "left", "right", "up", "down", and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first" and "second" are only used to simplify the literal description to distinguish similar objects, and cannot be understood as the sequence of the specific order.

[0083] Referring to FIGS. 1-3, the present application provides a first electric drive device, which includes a box body 10, a steering rod 20 arranged in the upper part of the box body 10 and capable of protruding out of the top of the box body 10, a drive rod 30 and a drive wheel 40 arranged in the lower part of the box body 10 and capable of protruding out of the bottom of the box body 10, a motor assembly for driving the steering rod 20 and the drive rod 30 to extend and retract up and down, and the drive rod 30 is fixed to the upper part of the drive wheel 40 through a wheel fork 301, and the drive wheel 40 is a hub motor wheel. In a first state, the motor assembly controls the steering rod 20 to extend upward, and controls the drive rod 30 and the drive wheel 40 to extend downward outside the box body 10, in which state the electric drive device can be externally connected to a luggage case for movement. In a second state, the motor assembly controls the steering rod 20 to retract downward, and controls the drive rod 30 and the drive wheel 40 to retract upward inside the box body 10, in which state the electric drive device can be maximally reduced in size, making it convenient to carry or place it inside the luggage case for storage.

[0084] Referring to FIGS. 5-10, the motor assembly includes a double-output-shaft motor 50, which is arranged vertically and has two output ends facing upward and downward respectively. The output end of the upper end of the double-output-shaft motor 50 is threadedly connected with the steering rod 20, and when the output end of the upper end rotates, the steering rod 20 moves up and down relative to the double-output-shaft motor 50. The output end of the lower end of the double-output-shaft motor 50 is threadedly connected with the drive rod 30, and when the output end of the lower end rotates, the drive rod 30 moves up and down relative to the double-output-shaft motor 50. The double-output-shaft motor 50 is sleeved with a sliding sleeve 501, the steering rod 20 and the drive rod 30 are respectively inserted into the two ends of the sliding sleeve 501 and can slide along the length direction of the sliding sleeve 501. The outer walls of the steering rod 20 and the drive rod 30 are respectively provided with limiting protrusions 302, and the inner wall of the sliding sleeve 501 is provided with limiting sliding grooves 502 matched with the limiting protrusions 302. In this embodiment, the sliding sleeve 501 not only provides sliding guide for the steering rod 20 and the drive rod 30, but also limits the rotation of the steering rod 20 and the drive rod 30, so that the steering rod 30 can drive the drive rod 30 to rotate synchronously when the steering rod 30 rotates.

[0085] The bottom of the steering rod 20 and the top of the driving rod 30 are respectively provided with a rotating connecting block 303, the two ends of the double-output shaft motor 50 are respectively provided with a threaded screw rod 503, the rotating connecting block 303 is internally provided with an internal thread matched with the external thread, and the steering rod 20 and the driving rod 30 are threadedly connected with the double-output shaft motor 50 through the rotating connecting block 303. The external thread directions of the screw rods 503 of the two ends of the double-output shaft motor 50 are opposite, so as to meet the opposite reverse movements of the steering rod 20 and the driving rod 30, that is, when the steering rod 20 moves upward, the driving rod 30 moves downward, and when the steering rod 20 moves downward, the driving rod 30 moves upward. The inner wall of the box body 10 is provided with a bearing seat 106, and the sliding sleeve 501 is installed on the bearing seat 106 and rotationally connected with the box body 10.

[0086] Referring to FIGS. 2 and 4, the electric driving device further comprises a controller 101, a connecting assembly for detachable connection with an external luggage, the controller 101 is installed inside the box body 10, the motor assembly is connected with the controller 101 and controlled by the controller 101, the electric driving device is connected with the external luggage through the connecting assembly and drives the external luggage to move; the outer side wall of the box body 10 is provided with a power switch 102 and a control switch 103, the power switch 102 controls the opening and closing of the total power supply, and the control switch 103 controls the working of the motor assembly; the electric driving device further comprises a battery 104, the outer side wall of the box body 10 is provided with a battery slot 105 matched with the battery 104, the battery 104 is detachably inserted into the battery slot 105 and connected with the controller 101.

[0087] Referring to FIGS. 11 to 13, the connecting assembly comprises an electromagnetic lock 60, a sliding positioning seat 601 and a positioning tip 602, the output end of the electromagnetic lock 60 is provided with a pressing piece 603, the bottom of the pressing piece 603 is provided with a first sliding inclined surface 604, the inside of the box body 10 is provided with a sliding seat 109, the sliding positioning seat 601 is slidingly installed on the sliding seat 109, the positioning tip 602 is installed on one end of the sliding positioning seat 601 and protrudes out of the box body 10, the other end of the sliding positioning seat 601 and the sliding seat 109 are provided with an elastic piece 605, the sliding positioning seat 601 is provided with a second sliding inclined surface 606 matched with the first sliding inclined surface 604, the first sliding inclined surface 604 and the second sliding inclined surface 606 abut each other, and the outer periphery of the positioning tip 602 is provided with an elastic buckle 607, and the elastic buckle 607 is slidingly connected with the positioning tip 602.

[0088] The elastic buckle 607 comprises an annular base 608 sleeved on the outer periphery of the positioning stem 602, a plurality of elastic claw rods 609 arranged on the annular base 608, and a first buckle 610 arranged at the end of the elastic claw rod 609. The annular base 608 can slide along the length direction of the positioning stem 602. The positioning stem 602 is inserted into the annular base 608 and abuts against the plurality of elastic claw rods 609. When the positioning stem 602 is not completely inserted into the annular base 608, the end of the plurality of elastic claw rods 609 is in a central contraction state. When the positioning stem 602 is completely inserted into the annular base 608, the positioning stem 602 abuts against the end of the plurality of elastic claw rods 609 and drives the end of the plurality of elastic claw rods 609 to expand outward. The outer peripheral wall of the positioning stem 602 is provided with a plurality of first stop blocks 611 for limiting the sliding space of the annular base 608. The middle part of the outer side of the elastic claw rod 609 is provided with a second stop block 612.

[0089] In the initial state, the electromagnetic lock 60 extends the mortgage member 603 to drive the sliding positioning seat 601 to retract, the elastic member 605 is in a compressed state, the annular base 608 abuts against the first stop block 611, and the end of the plurality of elastic claw rods 609 is in a contraction state at this time. Since the end of the plurality of elastic claw rods 609 is in a contraction state, it is convenient to be inserted into the corresponding connecting hole of the external luggage case. When the connection is performed, the electromagnetic lock 60 retracts the mortgage member 603, the sliding positioning seat 601 slides outward under the action of the elastic member 605 releasing the elastic force, and drives the positioning stem 602 to slide. The positioning stem 602 is gradually completely inserted into the annular base 608. At this time, the end of the plurality of elastic claw rods 609 expands outward under the pressure of the positioning stem 602 and is clamped in the inner wall of the external luggage case by the first buckle 610, and the connection is completed. When the connection is disconnected, the electromagnetic lock 60 extends the mortgage member 603 to drive the sliding positioning seat 601 to retract, and the positioning stem 602 is changed from the completely inserted state to the non-completely inserted state. The end of the plurality of elastic claw rods 609 automatically returns to the central contraction state after the pressure of the positioning stem 602 is cancelled. At this time, the external luggage case can be separated.

[0090] Referring to FIG. 2, the connecting assembly further comprises an electromagnet 110 arranged on the back of the box body 10. The electromagnet 110 has strong magnetic attraction ability after being powered on, which can further improve the connection strength of the electric drive device and the external luggage case. The connecting assembly further comprises a connecting slot 111 arranged on the back of the box body 10. The connecting slot 111 can realize simple buckle connection and is convenient and effective to operate.

[0091] The top of the steering rod 20 is provided with a steering handle 201, and the steering handle 201 is provided with a control component 203, which is a controller controlled by a controller, such as a speed regulating handle and a brake handle for controlling the electric luggage. The steering handle 201 is rotationally connected with the steering rod 20, that is, the steering handle 201 can be switched between a horizontal unfolded state and a vertical folded state, and the upper part of the box body 10 is provided with a handle groove 202 matched with the steering handle 201, and the steering handle 201 can be inserted into the handle groove 202 for storage, further reducing the volume of the electric drive device in the second state.

[0092] Referring to FIGS. 14 and 15, the present application provides a second electric drive device, which comprises a box body 10, a steering rod 20 arranged in the upper part of the box body 10 and capable of protruding out of the top of the box body 10, a drive rod 30 and a drive wheel 40 arranged in the lower part of the box body 10 and capable of protruding out of the bottom of the box body 10, and a motor assembly for driving the steering rod 20 and the drive rod 30 to extend and retract up and down. The drive rod 30 is fixed to the upper part of the drive wheel 40 through a wheel fork 301, and the drive wheel 40 is a hub motor wheel. In the first state, the motor assembly controls the steering rod 20 to extend upward, and controls the drive rod 30 and the drive wheel 40 to extend downward outside the box body 10. In this state, the electric drive device can be externally connected to the luggage for movement as an independent device. In the second state, the motor assembly controls the steering rod 20 to retract downward, and controls the drive rod 30 and the drive wheel 40 to retract upward in the box body 10. In this state, the electric drive device can be maximally reduced in volume, so as to be conveniently carried or placed in the luggage for storage.

[0093] Referring to FIG. 16 to FIG. 21, the motor assembly comprises a sliding sleeve 501, a driving motor 504 and a gear box 505 arranged on the sliding sleeve 501, the steering rod 20 and the driving rod 30 are respectively inserted into two ends of the sliding sleeve 501 and can slide along the length direction of the sliding sleeve 501, the outer wall of the steering rod 20 and the driving rod 30 is respectively provided with a limiting convex rib 302, the inner wall of the sliding sleeve 501 is provided with a limiting sliding groove 502 matched with the limiting convex rib 302, the sliding sleeve 501 is provided with a lead screw 503 threadedly connected with the steering rod 20 and the driving rod 30 respectively, the output end of the driving motor 504 extends into the gear box 505 and is connected with a first bevel gear 506 arranged vertically, the end of the lead screw 503 is provided with a second bevel gear 507 arranged horizontally matched with the first bevel gear 506, the driving motor 504 is connected with the lead screw 503 through the first bevel gear 506 and the second bevel gear 507, when the driving motor 504 drives the first bevel gear 506 to rotate vertically, the first bevel gear 506 drives the second bevel gear 507 to rotate horizontally, and then drives the lead screw 503 to rotate. The bottom of the steering rod 20 and the top of the driving rod 30 are respectively provided with a rotating connecting block 303, the outer periphery of the lead screw 503 is provided with an external thread, the rotating connecting block 303 is provided with an internal thread matched with the external thread, the steering rod 20 and the driving rod 30 are threadedly connected with the lead screw 503 through the rotating connecting block 303. The inner wall of the box body 10 is provided with a bearing seat 106, the sliding sleeve 501 is mounted on the bearing seat 106 and is rotatably connected with the box body 10.

[0094] The electric driving device further comprises a controller 101 and a connecting assembly for detachably connecting with an external luggage, the controller 101 is mounted in the box body 10, the motor assembly is connected with the controller 101 and is controlled by the controller 101, the electric driving device is connected with the external luggage through the connecting assembly and drives the external luggage to move. The structure of the connecting assembly and the structures of other components are the same as those of the first electric driving device, and will not be described herein.

[0095] Referring to Fig. 22, the third electric drive device is provided, which comprises a box body 10, a steering rod 20 arranged at the upper part of the box body 10 and capable of protruding out of the top of the box body 10, a drive rod 30 and a drive wheel 40 arranged at the lower part of the box body 10 and capable of protruding out of the bottom of the box body 10, and a motor assembly for driving the steering rod 20 and the drive rod 30 to extend and retract up and down. The drive rod 30 is fixed to the upper part of the drive wheel 40 through a wheel fork 301, and the drive wheel 40 is a wheel hub motor wheel. In a first state, the motor assembly controls the steering rod 20 to extend upward, and controls the drive rod 30 and the drive wheel 40 to extend downward out of the box body 10. In this state, the electric drive device can be externally connected to a luggage case to move as an independent device. In a second state, the motor assembly controls the steering rod 20 to retract downward, and controls the drive rod 30 and the drive wheel 40 to retract upward into the box body 10. In this state, the electric drive device can be minimized in size to facilitate carrying or placing it inside the luggage case for storage.

[0096] Referring to Figs. 23 to 25, the motor assembly comprises a first electric push rod 508 and a second electric push rod 509. The base of the first electric push rod 508 is mounted at the bottom of the box body 10, the output shaft of the first electric push rod 508 faces upward and is connected to the steering rod 20 through a connecting piece 510, and the first electric push rod 508 drives the steering rod 20 to extend and retract up and down through the connecting piece 510. The base of the second electric push rod 509 is mounted at the top of the box body 10, the output shaft of the second electric push rod 509 faces downward and is connected to the drive rod 30 through the connecting piece 510, and the second electric push rod 509 drives the drive rod 30 to extend and retract up and down through the connecting piece 510. The connecting piece 510 is provided with a bearing seat 106, and the steering rod 20 and the drive rod 30 are both mounted on the bearing seat 106 of the connecting piece 510 to rotate left and right relative to the connecting piece 510. The drive rod 30 is inserted into the inside of the steering rod 20 and can slide along the length direction of the steering rod 20. The inner side wall of the steering rod 20 and the outer side wall of the drive rod 30 are both provided with limiting planes 304 that are adapted to each other, so that the steering rod 20 and the drive rod 30 can be turned synchronously.

[0097] The electric drive device further comprises a controller 101 and a connecting assembly for detachable connection with an externally connected luggage case. The controller 101 is mounted inside the box body 10, the motor assembly is connected to the controller 101 and controlled by the controller 101, and the electric drive device is connected to the externally connected luggage case through the connecting assembly to drive the luggage case to move. The structure of the connecting assembly and the structures of other components are the same as those of the first electric drive device, and will not be described again.

[0098] Referring to Fig. 26, the fourth electric drive device is provided, which comprises a box body 10, a steering rod 20 arranged at the upper part of the box body 10 and capable of protruding out of the top of the box body 10, a drive rod 30 and a drive wheel 40 arranged at the lower part of the box body 10 and capable of protruding out of the bottom of the box body 10, and a motor assembly for driving the steering rod 20 and the drive rod 30 to extend and retract up and down. The drive rod 30 is fixed to the upper part of the drive wheel 40 through a wheel fork 301, and the drive wheel 40 is a wheel hub motor wheel. In a first state, the motor assembly controls the steering rod 20 to extend upward, and controls the drive rod 30 and the drive wheel 40 to extend downward out of the box body 10. In this state, the electric drive device can be externally connected to a luggage case to move. In a second state, the motor assembly controls the steering rod 20 to retract downward, and controls the drive rod 30 and the drive wheel 40 to retract upward into the box body 10. In this state, the electric drive device can be minimized in size to facilitate carrying or placing it inside the luggage case for storage.

[0099] Referring to Figs. 26 and 27, the motor assembly comprises a drive motor 504 fixed to the inner wall of the box body 10, a drive gear 511 mounted on the output end of the drive motor 504, a first rack 512 rotatably connected with the steering rod 20, and a second rack 513 rotatably connected with the drive rod 30. The connection mode of the drive motor 511 and the drive gear 511 is a common connection mode in the art, which will not be described herein. Specifically, the upper end of the first rack 512 and the lower end of the second rack 513 are both connected with a bearing seat 106. The steering rod 20 is mounted on the bearing seat 106 and rotatably connected with the first rack 512. The drive rod 30 is mounted on the bearing seat 106 and rotatably connected with the second rack 513. The first rack 512 and the second rack 513 are arranged on both sides of the drive gear 511 and meshed with the drive gear 511. When the drive gear 511 rotates, it drives the first rack 512 and the second rack 513 to move upward or downward, respectively, thereby driving the steering rod 20 and the drive rod 30 to move upward or downward. A connecting rod 514 is connected between the steering rod 20 and the drive rod 30, with both ends of the connecting rod 514 inserted into the interiors of the steering rod 20 and the drive rod 30. The inner side walls of the steering rod 20 and the drive rod 30 and the outer side wall of the connecting rod 514 are all provided with mutually adapted limiting planes 304, so that the steering rod 20 and the drive rod 30 can be turned synchronously.

[0100] The electric drive device further comprises a controller 101 and a connecting assembly for detachable connection with an externally connected luggage case. The controller 101 is mounted inside the box body 10. The motor assembly is connected with the controller 101 and controlled by the controller 101. The electric drive device is connected with the externally connected luggage case through the connecting assembly and drives the externally connected luggage case to move. The structure of the connecting assembly and the structures of other components are the same as those of the first electric drive device, which will not be described herein.

[0101] Referring to Fig. 28, the fifth electric drive device is provided, which comprises a box body 10, a steering rod 20 arranged at the upper part of the box body 10 and capable of protruding out of the top of the box body 10, a drive rod 30 and a drive wheel 40 arranged at the lower part of the box body 10 and capable of protruding out of the bottom of the box body 10, and a motor assembly for driving the steering rod 20 and the drive rod 30 to stretch out and retract up and down. The drive rod 30 is fixed to the upper part of the drive wheel 40 through a wheel fork 301, and the drive wheel 40 is a wheel hub motor wheel. In a first state, the motor assembly controls the steering rod 20 to stretch out upward, and controls the drive rod 30 and the drive wheel 40 to stretch out downward outside the box body 10. In this state, the electric drive device can be externally connected to a luggage case for movement as an independent device. In a second state, the motor assembly controls the steering rod 20 to retract downward, and controls the drive rod 30 and the drive wheel 40 to retract upward inside the box body 10. In this state, the electric drive device can be maximally reduced in size, so as to be conveniently carried or placed inside the luggage case for storage.

[0102] Referring to Figs. 28 to 30, the motor assembly comprises a drive motor 504 and a scissor-type telescopic connecting rod 515 connected with the output shaft of the drive motor 504. The scissor-type telescopic connecting rod 515 is a commonly used telescopic structure in the art, and will not be described herein. One end of the scissor-type telescopic connecting rod 515 is connected with the steering rod 20, and the other end is connected with the drive rod 30. The drive rod 30 is inserted into the inside of the steering rod 20 and is capable of sliding along the length direction of the steering rod 20. When the drive motor 504 drives the scissor-type telescopic connecting rod 515 to expand, one end of the scissor-type telescopic connecting rod 515 drives the steering rod 20 to stretch out upward, and the other end of the scissor-type telescopic connecting rod 515 drives the drive rod 30 to stretch out downward. When the drive motor 504 drives the scissor-type telescopic connecting rod 515 to retract, one end of the scissor-type telescopic connecting rod 515 drives the steering rod 20 to retract downward, and the other end of the scissor-type telescopic connecting rod 515 drives the drive rod 30 to retract upward.

[0103] The driving rod 30 is inserted into the inside of the steering rod 20 and can slide along the length direction of the steering rod 20. In the embodiment, the two ends of the scissor type telescopic connecting rod 515 are fixedly connected with the steering rod 20 and the driving rod 30, so that when the steering rod 20 turns left and right, the driving rod 30 is driven by the scissor type telescopic connecting rod 515 to turn synchronously. The inside wall of the box body 10 is provided with an arc-shaped rotating groove 107, the back of the driving motor 504 is provided with an arc-shaped rotating plate 516 matched with the arc-shaped rotating groove 107, the side wall of the arc-shaped rotating groove 107 is provided with an arc-shaped waist hole 108, the arc-shaped rotating plate 516 is provided with a rotating positioning rod 517 matched with the arc-shaped waist hole 108, the arc-shaped rotating plate 516 is installed in the arc-shaped rotating groove 107, and the rotating positioning rod 517 is located in the arc-shaped waist hole 108. When the steering rod 20 turns left and right, the driving motor 504 and the arc-shaped rotating plate 516 are driven by the scissor type telescopic connecting rod 515 to turn, the arc-shaped rotating groove 107 provides a rotating space for the arc-shaped rotating plate 516, and the arc-shaped waist hole 108 provides a rotating space for the rotating positioning rod 517 and limits the rotating angle.

[0104] The electric driving device further comprises a controller 101 and a connecting assembly for detachable connection with an external luggage case. The controller 101 is installed in the inside of the box body 10, the motor assembly is connected with the controller 101 and is controlled by the controller 101, and the electric driving device is connected with the external luggage case through the connecting assembly and drives the external luggage case to move. The structure of the connecting assembly and the structures of other components are the same as those of the first electric driving device, and will not be described herein again.

[0105] Referring to FIGS. 31 and 32, the sixth electric driving device provided by the application comprises a box body 10, a steering rod 20 arranged at the upper part of the box body 10 and capable of protruding out of the top of the box body 10, a driving rod 30 and a driving wheel 40 arranged at the lower part of the box body 10 and capable of protruding out of the bottom of the box body 10, and a motor assembly for driving the steering rod 20 and the driving rod 30 to extend and retract up and down. The driving rod 30 is fixed to the upper part of the driving wheel 40 through a wheel fork 301, and the driving wheel 40 is a wheel hub motor wheel. In a first state, the motor assembly controls the steering rod 20 to extend upward, and controls the driving rod 30 and the driving wheel 40 to extend downward outside the box body 10. In this state, the electric driving device can be externally connected to a luggage case to move as an independent device. In a second state, the motor assembly controls the steering rod 20 to retract downward, and controls the driving rod 30 and the driving wheel 40 to retract upward into the box body 10. In this state, the electric driving device can be maximally reduced in size, so that it is convenient to carry or place in the inside of the luggage case for storage.

[0106] Referring to FIGS. 32-37, the motor assembly includes a driving motor 504 fixed to the inner wall of the box body 10, a first main gear 518 installed at the output end of the driving motor 504, a second main gear 519 in transmission connection with the output end of the driving motor 504, a first rack 512 connected with the steering rod 20, and a second rack 513 connected with the driving rod 30. The second main gear 519 is located below the first main gear 518, and the second main gear 519 is connected with the output end of the driving motor 504 through a transmission belt 520. The first main gear 518 is in meshing connection with the first rack 512, and in turn drives the steering rod 20 to move up and down. The second main gear 519 is in meshing connection with the second rack 513, and in turn drives the driving rod 30 to move up and down.

[0107] The driving motor 504 is fixedly connected with two groups of guide sliding rods 522 through a mounting plate 521. The two groups of guide sliding rods 522 are symmetrically arranged on both sides of the first main gear 518 and the second main gear 519, respectively. The first rack 512 and the second rack 513 are slidably installed on the two groups of guide sliding rods 522, and can slide up and down along the guide sliding rods 522. A plurality of transmission gears 523 are in meshing connection between the first main gear 518 and the first rack 512. The plurality of transmission gears 523 are located at the upper part of the first main gear 518. The plurality of transmission gears 523 are all installed on the mounting plate 521 and are in turn in meshing connection with each other. The number of the plurality of transmission gears 523 is even. The last transmission gear 523 away from the first main gear 518 is in meshing connection with the first rack 512. Such arrangement of the even number of transmission gears 523 has the following effects. On the one hand, the rotation direction of the last transmission gear 523 away from the first main gear 518 is consistent with that of the first main gear 518. On the other hand, the moving stroke of the steering rod 20 protruding outward is increased, and at the same time, the moving stroke of the driving rod 30 protruding outward is also increased correspondingly by using the second main gear 519. The last transmission gear 523 away from the first main gear 518 is composed of two sub-transmission gears 524. The two sub-transmission gears 524 are parallel to and synchronously rotate with each other. One of the two sub-transmission gears 524 is in meshing connection with the other transmission gears 523, and the other sub-transmission gear 524 is in meshing connection with the first rack 512. Such arrangement avoids interference between the first rack 512 and the other transmission gears 523, and in turn ensures the normal lifting of the first rack 512.

[0108] The electric driving device further includes a controller 101 and a connecting assembly for detachable connection with an external luggage. The controller 101 is installed inside the box body 10. The motor assembly is connected with the controller 101 and is controlled by the controller 101. The electric driving device is connected with the external luggage through the connecting assembly and drives the external luggage to move.

[0109] Referring to Figures 38 to 40, the connecting assembly includes a connecting groove 112 located on the back of the box 10, a locking member 113 rotatably mounted on the upper end of the connecting groove 112, and a handle 114 rotatably mounted on the box 10. The locking member 113 consists of a locking end 115 and a first pressing end 116. A torsion spring 705 is provided between the locking member 113 and the connecting groove 112. The handle 114 consists of a control end 118 exposed on the box 10 and a second pressing end 119 abutting against the first pressing end 116. When the connecting assembly is connected to the external luggage, manually turn the control end 118 so that the second pressing end 119 presses against the first pressing end 116, thereby lifting the locking end 115 upwards. Then, insert the connecting block 120, which is rotatably connected to the external luggage, into the connecting groove 112. The connecting block 120 has a locking groove 121 that matches the locking end 115. Release the handle 114, and the locking end 115 automatically locks the connecting block 120 under the action of the torsion spring 705, thus completing the connection with the external luggage. The structures of other components are the same as those of the first type of electric drive device, and will not be described in detail.

[0110] Referring to Figures 41 and 42, this application provides a seventh type of electric drive device, including a housing 10, a steering rod 20 disposed in the upper part of the housing 10 and protruding from the top of the housing 10, a drive rod 30 disposed in the lower part of the housing 10 and protruding from the bottom of the housing 10, and a drive wheel 40, and a motor assembly for driving the steering rod 20 and the drive rod 30 to extend and retract vertically. The drive rod 30 is fixed to the upper part of the drive wheel 40 by a wheel fork 301, and the drive wheel 40 is a hub motor wheel. In a first state, the motor assembly controls the steering rod 20 to extend upward and controls the drive rod 30 and the drive wheel 40 to extend downward outside the housing 10. In this state, the electric drive device can be externally connected to the suitcase as an independent device for movement. In a second state, the motor assembly controls the steering rod 20 to retract downward and controls the drive rod 30 and the drive wheel 40 to retract upward inside the housing 10. In this state, the electric drive device can minimize its size, making it easy to carry or store inside the suitcase.

[0111] Referring to Figures 42 to 44, the motor assembly includes a drive motor 504 fixed to the inner wall of the housing 10, a first transmission screw 525 connected to the steering rod 20, and a second transmission screw 526 connected to the drive rod 30. The first transmission screw 525 and the second transmission screw 526 are connected in a transmission manner. The output end of the drive motor 504 is connected to the first transmission screw 525 or the second transmission screw 526. In this embodiment, the output end of the drive motor 504 is connected to the second transmission screw 526 as an example. The motor assembly also includes an upper base 527, a lower base 528, and a slide rod 529 disposed between the upper base 527 and the lower base 528. Both the steering rod 20 and the drive rod 30 are provided with sliding blocks 530 slidably mounted on the slide rod 529. The corresponding sliding blocks 530 of the steering rod 20 and the drive rod 30 are respectively sleeved on the slide rod 529 and can slide up and down along the slide rod 529. The first transmission screw 525 and the second transmission screw 526 are parallel to each other and are connected by a connecting gear 531. Next, the sliding block 530 corresponding to the steering rod 20 is sleeved on the first transmission screw 525 and threadedly connected to the first transmission screw 525. The rotation of the first transmission screw 525 drives the steering rod 20 to move up and down. The sliding block 530 corresponding to the drive rod 30 is sleeved on the second transmission screw 526 and threadedly connected to the second transmission screw 526. The rotation of the second transmission screw 526 drives the drive rod 30 to move up and down. The output end of the drive motor 504 is connected to the end of the second transmission screw 526 through a coupling.

[0112] Referring to Figure 42, the upper part of the housing 10 is provided with a handle slot 123 and a handle 122 rotatably connected to the housing 10. The handle 122 facilitates the user's carrying of the entire electric drive unit and can be stored in the handle slot 123. The electric drive unit also includes a controller 101 and a connecting component for detachable connection with an external suitcase. The controller 101 is installed inside the housing 10, and the motor assembly is connected to and controlled by the controller 101. The electric drive unit is connected to the external suitcase through the connecting component and drives the external suitcase to move. The structure of the connecting component is the same as that of the sixth type of electric drive unit, and the structures of other components are the same as those of the first type of electric drive unit, and will not be described again.

[0113] Referring to Figure 45, this application also provides an electric suitcase, including the above-mentioned electric drive device and a suitcase body 70, wherein the electric drive device and the suitcase body 70 are detachably connected.

[0114] Referring to Figure 46, when connected to the first to fifth types of electric drive devices, the outer wall of the suitcase body 70 is provided with a connection socket 707 adapted to the connection slot 111, a connection hole 708 adapted to the elastic buckle 607, and a magnetic block 709 adapted to the electromagnet 110. When the electric drive device is connected to the suitcase body 70, the elastic buckle 607 is inserted into the connection hole 708 and engages with the suitcase body 70, the connection socket 707 is inserted into the connection slot 111 and engages with each other, and the electromagnet 110 and the magnetic block 709 are attracted to each other. When connected to the sixth and seventh types of electric drive devices, the outer wall of the suitcase body 70 is provided with a connection block 120 that is rotatably connected to the suitcase body 70. The connection block 120 is inserted into the connection groove 112 and locked by the locking member 113 to achieve connection and fixation with the electric drive device. The electric drive device is rotatably connected to the suitcase body 70 through the connection block 120.

[0115] Referring to Figures 47 to 49, the four ends of the bottom of the suitcase body 70 are provided with wheels 701. The two wheels on the bottom of the suitcase body 70 near the electric drive device are universal wheels. The universal wheels are rotatably connected to the suitcase body 70. The universal wheels have a first state of contact with the ground and a second state of being suspended relative to the ground.

[0116] The inner wall of the luggage body 70 is equipped with a drive motor 504, a tension wheel 702, and two guide wheels 703. The casters are rotatably connected to the luggage body 70 via mounting bases 704. A torsion spring 705 is located between the mounting base 704 and the luggage body 70. The two guide wheels 703 are positioned directly above the two casters. The output end of the drive motor 504 is connected to two pull ropes 706, which are connected to the two mounting bases 704 via the tension wheel 702 and the two guide wheels 703, respectively. When the drive motor 504 rotates forward, the pull ropes 706 pull the two mounting bases 704 upward, applying force to the torsion spring 705 and causing the casters to contact the ground; the casters are in the first state. When the drive motor 504 rotates in reverse, the pull ropes 706 release the two mounting bases 704, causing them to automatically flip under the action of the torsion spring, thus suspending the casters relative to the ground; the casters are in the second state. An electrical connector 710 is provided at the connection between the box body 10 and the luggage body 70. When the electric drive device is connected to the luggage body 70, the drive motor 504 is controlled by the controller 101 through the electrical connector 710.

[0117] When the suitcase body 70 is not connected to the electric drive device, the casters are in the first state, and the suitcase body 70 can be used as a regular suitcase. Simultaneously, the electric drive device, in the second state, can also be stored inside the suitcase body 70. When the suitcase body 70 is connected to the electric drive device, the casters are in the second state, and the electric drive device in the first state can drive the suitcase body 70 to move. Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Therefore, although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this application; and all technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

An electric drive device characterized by comprising: The utility model provides a kind of electric drive device, including box body, steering rod arranged in the upper part of box body, drive rod and drive wheel arranged in the lower part of box body, motor assembly for driving steering rod and drive rod up and down telescopic, the motor assembly includes double-output shaft motor, the double-output shaft motor is vertically arranged, the output end of the upper end of the double-output shaft motor is threadedly connected with steering rod, the output end of the lower end of the double-output shaft motor is threadedly connected with drive rod, the outer periphery of the double-output shaft motor is equipped with sliding tube sleeve, steering rod and drive rod are inserted into the two ends of sliding tube sleeve respectively, and can slide along the length direction of sliding tube sleeve, the outer wall of steering rod and drive rod is equipped with limiting convex rib, the inner wall of sliding tube sleeve is equipped with limiting sliding groove matched with limiting convex rib. The electric drive device according to claim 1, characterized in that The bottom of the steering rod and the top of the drive rod are each provided with a rotating connecting block, the output shafts at both ends of the double-output shaft motor are each provided with a threaded screw rod, the rotating connecting block is internally provided with an internal thread matched with the external thread, and the steering rod and the drive rod are threadedly connected with the double-output shaft motor through the rotating connecting block. The electric drive device according to claim 2, characterized in that The external threads of the threaded screw rods of the output shafts at both ends of the double-output shaft motor are in opposite directions. The electric drive device according to claim 1, characterized in that The inner wall of the box body is provided with a bearing seat, and the sliding tube sleeve is mounted on the bearing seat and rotationally connected with the box body. The electric drive device according to claim 1, characterized in that The electric drive device further includes a controller and a connecting assembly for detachable connection with an external luggage case, the motor assembly is connected with the controller, and the electric drive device is connected with the external luggage case through the connecting assembly and drives the external luggage case to move. An electric drive device characterized by comprising: The utility model provides a kind of electric drive device, including box body, steering rod arranged in the upper part of box body, drive rod and drive wheel arranged in the lower part of box body, motor assembly for driving steering rod and drive rod up and down telescopic, the motor assembly includes sliding tube sleeve, drive motor and gear box arranged on sliding tube sleeve, steering rod and drive rod are inserted into the two ends of sliding tube sleeve respectively, and can slide along the length direction of sliding tube sleeve, the outer wall of steering rod and drive rod is equipped with limiting convex rib, the inner wall of sliding tube sleeve is equipped with limiting sliding groove matched with limiting convex rib, the sliding tube sleeve is internally provided with threaded screw rod respectively threadedly connected with steering rod and drive rod, the output end of the drive motor extends into the gear box and is connected with first bevel gear, the end of the threaded screw rod is provided with second bevel gear matched with first bevel gear, and the drive motor is connected with the threaded screw rod through first bevel gear and second bevel gear. The electric drive device according to claim 6, characterized in that The bottom of the steering rod and the top of the drive rod are each provided with a rotating connecting block, the outer periphery of the threaded screw rod is provided with an external thread, the rotating connecting block is internally provided with an internal thread matched with the external thread, and the steering rod and the drive rod are threadedly connected with the threaded screw rod through the rotating connecting block. The electric drive device according to claim 6, characterized in that The inner wall of the box body is provided with a bearing seat, and the sliding tube sleeve is mounted on the bearing seat and rotationally connected with the box body. The electric drive device according to claim 6, characterized in that The electric drive device further includes a controller and a connecting assembly for detachable connection with an external luggage case, the motor assembly is connected with the controller, and the electric drive device is connected with the external luggage case through the connecting assembly and drives the external luggage case to move. An electric drive device characterized by comprising: The utility model provides a kind of electric drive device, including box body, steering lever arranged in the upper part of box body, drive rod and drive wheel arranged in the lower part of box body, motor assembly for driving steering lever and drive rod up and down telescopic, the motor assembly includes first electric push rod and second electric push rod, the base of first electric push rod is mounted in bottom in box body, the output shaft of first electric push rod is upwards and is connected with steering lever by connecting piece, the base of second electric push rod is mounted in top in box body, the output shaft of second electric push rod is downwards and is connected with drive rod by connecting piece. The electric drive device according to claim 10, characterized in that The connecting piece is provided with bearing seat, and the steering lever and the drive rod are mounted on the bearing seat. The electric drive device according to claim 10, characterized in that The electric drive device further includes a controller and a connecting assembly for detachable connection with an external luggage case. An electric drive device characterized by comprising: The utility model provides a kind of electric drive device, including box body, steering lever arranged in the upper part of box body, drive rod and drive wheel arranged in the lower part of box body, motor assembly for driving steering lever and drive rod up and down telescopic, the motor assembly includes drive motor fixed in the inner wall of box body, drive gear mounted on the output end of drive motor, first rack rotatably connected with steering lever, second rack rotatably connected with drive rod, and the first rack and the second rack are arranged on both sides of the drive gear and engaged with the drive gear. The electric drive device according to claim 13, characterized in that The electric drive device further includes a controller and a connecting assembly for detachable connection with an external luggage case. An electric drive device characterized by comprising: The utility model provides a kind of electric drive device, including box body, steering lever arranged in the upper part of box body, drive rod and drive wheel arranged in the lower part of box body, motor assembly for driving steering lever and drive rod up and down telescopic, the motor assembly includes drive motor, scissor type telescopic connecting rod connected with the output shaft of drive motor, one end of the scissor type telescopic connecting rod is connected with steering lever, and the other end is connected with drive rod. The electric drive device according to claim 15, characterized in that The inner wall of the box body is provided with an arc-shaped rotating groove, the back of the drive motor is provided with an arc-shaped rotating plate adapted to the arc-shaped rotating groove, the sidewall of the arc-shaped rotating groove is provided with an arc-shaped waist hole, the arc-shaped rotating plate is provided with a rotating positioning rod adapted to the arc-shaped waist hole, and the arc-shaped rotating plate is installed in the arc-shaped rotating groove, and the rotating positioning rod is located in the arc-shaped waist hole. The electric drive device according to claim 15, characterized in that The electric drive device further includes a controller and a connecting assembly for detachable connection with an external luggage case. The motor assembly is connected with the controller, and the electric drive device is connected with the external luggage case through the connecting assembly and drives the external luggage case to move. An electric drive device characterized by comprising: The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down. The electric drive device according to claim 18, characterized in that The first main gear wheel and the first rack are in meshing connection. The electric drive device according to claim 18, characterized in that The electric drive device further comprises a controller and a connecting assembly for detachable connection with an external luggage case. An electric drive device characterized by comprising: The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down. The electric drive device according to claim 21, characterized in that The electric drive device further comprises a controller and a connecting assembly for detachable connection with an external luggage case. The electric drive device according to claim 21, characterized in that The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down. An electrically powered luggage case characterized by The electric drive device further comprises a controller and a connecting assembly for detachable connection with an external luggage case. The motorized luggage of claim 24, wherein The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down. The electric drive device further comprises a controller and a connecting assembly for detachable connection with an external luggage case. The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down. The electric drive device further comprises a controller and a connecting assembly for detachable connection with an external luggage case. The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down. The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down. The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down. The electric drive device comprises a box body, a steering rod arranged at an upper portion in the box body, a driving rod and a driving wheel arranged at a lower portion in the box body, and a motor assembly for driving the steering rod and the driving rod to extend and retract up and down.

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